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Zambia

Cancer Statistics
Population in 2008: 12.6m
People newly diagnosed with cancer (excluding NMSC) / yr: 10,100
Age-standardised rate, incidence per 100,000 people/yr: 140.8
Risk of getting cancer before age 75:14.6%
People dying from cancer /yr: 8,000
Data from IARC GlobalCan (2008)
Zambian Cancer Resources
Latest Research Publications related to Zambia

Zambian Cancer Resources (5 links)


Latest Research Publications related to Zambia

Nyambe A, Kampen JK, Baboo SK, Van Hal G
Knowledge, attitudes and practices of cervical cancer prevention among Zambian women and men.
BMC Public Health. 2019; 19(1):508 [PubMed] Free Access to Full Article Related Publications
BACKGROUND: In Zambia, cervical cancer screening was started in 2006 and the human papillomavirus vaccine was piloted in 2013. Nevertheless, cervical cancer remains the leading cancer. It is assumed that knowledge, social interaction, health behaviors and religion are factors that can influence screening and vaccination practices. This study addresses the question, what is the relationship between knowledge about cervical cancer, attitudes, self-reported behavior, and immediate support system, towards screening and vaccination of cervical cancer of Zambian women and men. The results of this study serve as a basis for future research, an input for improvement and adjustment of the existing prevention program and build on documented health behavior frameworks.
METHODS: A cross-sectional mixed methods study was conducted from February to May 2016. Two separate questionnaires were used to collect data from women (N = 300) and men (N = 300) residing in Chilenje and Kanyama (two townships in the capital city Lusaka). Respondent's knowledge of cervical cancer was operationalized by grading their ability to correctly identify causes and protective factors if they were aware of cervical cancer. Besides providing descriptive statistics of all study variables, we tested four research hypotheses concerning the link between knowledge, attitudes and practices suggested by the literature, by applying appropriate statistical tests (chi square test, analysis of variance, logistic regression).
RESULTS: Less than half of the respondents (36.8%) had heard of cervical cancer, 20.7% of women had attended screening and 6.7% of the total sample had vaccinated their daughter. Knowledge of causes and prevention was very low. There was a strong association between having awareness of cervical cancer and practicing screening (odds ratio = 20.5, 95% confidence interval = [9.214, 45.516]) and vaccination (odds ratio = 5.1, 95% confidence interval = [2.473, 10.423]). Social interactions were also found to greatly influence screening and vaccination behaviors.
CONCLUSIONS: The low level of knowledge of causes and prevention of cervical cancer suggests a need to increase knowledge and awareness among both women and men. Interpersonal interactions have great impact on practicing prevention behaviors, for instance, vaccination of daughters.

Nyambe N, Hoover S, Pinder LF, et al.
Differences in Cervical Cancer Screening Knowledge and Practices by HIV Status and Geographic Location: Implication for Program Implementation in Zambia.
Afr J Reprod Health. 2018; 22(4):92-101 [PubMed] Related Publications
The knowledge and perceptions of cervical cancer among HIV negative and positive women, aged 25-49 years, from rural and urban locations in Zambia was systematically accessed in this study to determine any differences. Data were coded and analyzed using NVivo software. Compared to HIV negative women, HIV positive women had more accurate information about cervical cancer. They were more likely to cite male circumcision as the best approach to cervical cancer prevention. HPV infection was more commonly mentioned as a risk factor among HIV positive women. However, HIV positive women displayed little knowledge about HPV being the major cause of cervical cancer. Among HIV positive women, lack of time was the major screening barrier cited while HIV negative women mentioned being symptomatic as a determinant for early detection. Compared to rural residents, urban residents cited a wider range of cervical cancer information sources, including media and workplace although all of the participants who stated that they had no knowledge of cervical cancer were urban residents. Overall, knowledge and perceptions of cervical cancer among study participants was high, although differences exist between subgroups. Sharing accurate and standardized information on cervical cancer would improve participation in cervical cancer screening services.

Asombang AW, Madsen R, Simuyandi M, et al.
Descriptive analysis of colorectal cancer in Zambia, Southern Africa using the National Cancer Disease Hospital Database.
Pan Afr Med J. 2018; 30:248 [PubMed] Free Access to Full Article Related Publications
Introduction: Colon cancer is preventable. There is a plethora of data regarding epidemiology and screening guidelines, however this data is sparse from the African continent. Objective: we aim to evaluate the trends of colorectal cancer (CRC) in a native African population based on age at diagnosis, gender and stage at diagnosis.
Methods: We conducted a retrospective analysis of the Cancer Disease Hospital (CDH) registry in Zambia, Southern Africa.
Results: 377 charts were identified in the CDH registry between 2007 and 2015, of which 234 were included in the final analysis. The mean age at diagnosis was 48.6 years and 62% are males. Using descriptive analysis for patterns: mode of diagnosis was surgical in 195 subjects (84%), histology adenocarcinoma in 225 (96.5%), most common location is rectum 124 (53%) followed by sigmoid 31 (13.4%), and cecum 26 (11%). 122 subjects (54%) were stage 4 at diagnosis. Using the Spearman rank correlation, we see no association between year and stage at diagnosis (p = 0.30) or year and age at diagnosis (p = 0.92).
Conclusion: Colorectal cancer was diagnosed at a young age and late stage in the Zambian patients.

Kapambwe S, Mwanahamuntu M, Pinder LF, et al.
Partnering with traditional Chiefs to expand access to cervical cancer prevention services in rural Zambia.
Int J Gynaecol Obstet. 2019; 144(3):297-301 [PubMed] Related Publications
OBJECTIVE: To evaluate how the influence of traditional Chiefs can be leveraged to promote access to cervical cancer prevention services in rural Zambia.
METHODS: A retrospective review of outcome data was conducted for all screening outreach events that occurred in Zambian Chiefdoms between October 4, 2015, and October 3, 2016. Members of the health promotion team of the Cervical Cancer Prevention Program in Zambia visited local Chiefs to inform them of the importance of cervical cancer prevention. The local Chiefs then summoned adults living within their Chiefdoms to assemble for cervical cancer prevention health talks. Screen-and-treat services were implemented within each of the Chiefdoms over a 1-week period.
RESULTS: VIA-enhanced digital imaging of the cervix (digital cervicography) was offered to 8399 women in ten Chiefdoms as part of a village-based screening (VBS) program. In all, 419 (4.9%) women had positive screening test results. Of these women, 276 (65.8%) were treated immediately with thermocoagulation and 143 (34.1%) were referred to provincial government hospitals to undergo either the loop electrosurgical excision procedure/large loop excision of the transformation zone (n=109, 26.0%) or punch biopsy (n=34, 8.1%).
CONCLUSION: The influence of traditional Chiefs was leveraged to facilitate access to cervical cancer prevention services in rural Zambia.

Nyambe A, Kampen JK, Baboo SK, Van Hal G
The impact of the social environment on Zambian cervical cancer prevention practices.
BMC Cancer. 2018; 18(1):1242 [PubMed] Free Access to Full Article Related Publications
BACKGROUND: Cervical cancer which is preventable by screening and vaccination is the most common cancer in Zambia among both the female and male population. In this article we aim to determine how the key players of the sociocultural and political environment recognize cervical cancer as a public health problem and therefore impact the provision of cervical cancer prevention services (screening and vaccination).
METHODS: Qualitative data in the form of interviews with stakeholders (health care providers, teachers and religious leaders), special interest groups (advocacy groups and non-governmental organizations) and policy makers, was collected as part of a mixed methods study from February to May 2016.
RESULTS: The views expressed by the respondents were coded into predetermined themes (cervical cancer in general, screening, vaccination) and an organizational chart of the administration of cervical cancer prevention services in Zambia was developed.
CONCLUSIONS: It is evident that the Zambian cervical cancer prevention system has targeted several areas and multiple sectors of society to reduce cervical cancer cases. However, awareness, knowledge, social support and facilities are factors that can be improved.

Fan LL, Shen Y, Chanda K, Ren ML
Uterine tumors resembling ovarian sex-cord tumor: A case report and literature review.
J Cancer Res Ther. 2018; 14(Supplement):S1209-S1212 [PubMed] Related Publications
Uterine tumors resembling ovarian sex-cord tumor (UTROSCT) are a rare, multi-phenotype sex-cord tumors, containing a structure which is characteristic with the trabecular, cord, nests, and false adenoid arrangement. In addition, CD99-positive was a basis for diagnosis of the disease. With uncertain malignant potential and relapse, these patients should be closely followed up. This article is to summarize clinical and pathological features, diagnosis and differential diagnosis, treatment, and prognosis of UTROSCT.

Kayamba V, Zyambo K, Kelly P
Presence of blood in gastric juice: A sensitive marker for gastric cancer screening in a poor resource setting.
PLoS One. 2018; 13(10):e0205185 [PubMed] Free Access to Full Article Related Publications
BACKGROUND: Gastric cancer survival rates in Africa are low as many cases are diagnosed late. Currently, there are no inexpensive, non-invasive and simple techniques that can be employed in poor resource settings for early case detection. In this study, we explored the possibility using blood in gastric juice as a screening tool to identify patients requiring referral for endoscopy.
METHODS: The study was conducted at the University Teaching Hospital endoscopy unit in Lusaka, Zambia. During esophagogastroduodenoscopy, gastric juice was aspirated and the pH determined using pH paper test strips. The presence of blood was tested using urinalysis reagent strips.
RESULTS: We enrolled 276 patients; 147(53%) were female and median age was 49 years (IQR 40-64 years). The presence of blood was associated with mucosal lesions, [OR 2.1; 95% CI 1.2-3.7, P = 0.004]. It was also associated with gastric cancer, [OR 6.7; 95% CI 2-35, P = 0.0005], even at 1:10 and 1:100 dilutions, [OR 5.4; 95% CI 2.3-13.8, P<0.0001] and [OR 9.1; 95% CI 3.5-23, P<0.0001] respectively. The sensitivity for gastric cancer detection using blood in gastric juice was 91% and the specificity was 41%. Analysis using the intensity of blood in gastric juice yielded an area under the receiver operating characteristic curve of 0.78; 95% CI 0.71-0.86 with a sensitivity of 79% and a specificity of 77%.
CONCLUSIONS: The presence of blood in gastric juice is associated with gastric mucosal lesions. It has a high sensitivity but low specificity for gastric cancer detection.

Bowa K, Mulele C, Kachimba J, et al.
A review of bladder cancer in Sub-Saharan Africa: A different disease, with a distinct presentation, assessment, and treatment.
Ann Afr Med. 2018 Jul-Sep; 17(3):99-105 [PubMed] Free Access to Full Article Related Publications
Background: Cancer of the bladder is the ninth leading cause of cancer in developed countries. It is the second most common urological malignancy. Transitional cell carcinoma (TCC) is the most common histological subtype in developed countries. In most of Africa, the most common type is squamous cell carcinoma (SCC). Cancer of bladder guidelines produced by the European Urological Association and the American Urological Association, including the tumor, node, and metastasis staging is focused on TCC of the bladder.
Objectives: The purpose of the study is to review the pathogenesis, pathology, presentation, and management of cancer of the bladder in Africa and to use this information to propose a practical staging system for SCC.
Methods: The study used the meta-analysis guideline provided by PRISMA using bladder cancer in Africa as the key search word. The study collected articles available on PubMed as of July 2017, Africa Online and Africa Index Medicus. PRISMA guidelines were used to screen for full-length hospital-based articles on cancer of the bladder in Africa. These articles were analyzed under four subcategories which were pathogenesis, pathology, clinical presentation, and management. The information extracted was pooled and used to propose a practical staging system for use in African settings.
Results: The result of evaluation of 821 articles yielded 23 full-length papers on hospital-based studies of cancer of the bladder in Africa. Cancer of the bladder in most of Africa is still predominantly SCC (53%-69%). There has been a notable increase in TCC in Africa (9%-41%). The pathogenesis is mostly schistosoma-related SCC presents late with painful hematuria and necroturia (20%). SCC responds poorly to chemotherapy or radiotherapy. The main management of SCC is open surgery. This review allowed for a practical organ-based stage of SCC of the bladder that can be used in Africa.
Conclusion: Bladder cancer in Africa presents differently from that in developed countries. Guidelines on cancer of the bladder may need to take account of this to improve bladder cancer management in Africa.

Capuccini J, Macchia G, Farina E, et al.
Short-course regimen of palliative radiotherapy in complicated bone metastases: a phase i-ii study (SHARON Project).
Clin Exp Metastasis. 2018; 35(7):605-611 [PubMed] Related Publications
Metastases with soft tissues invasion, impending fractures or spinal cord compression (complicated bone metastases) represent a common clinical problem in advanced cancers and frequently lead to deterioration of patients' quality of life (QoL). A phase I-II study was planned to define the maximum tolerated dose (MTD) of a short-course radiotherapy (RT) and its efficacy in palliation of complicated bone metastases. A phase I trial was designed with three dose-escalation steps: 16, 18, and 20 Gy. Total dose at each level was delivered in 2 days, twice daily. Eligibility criteria were painful complicated bone metastases and ECOG performance status ≤ 3. The presence of acute toxicity ≥ Grade 3 (RTOG scale) was considered the dose limiting toxicity. The MTD was used to plan a phase II trial with pain response as the primary outcome. Pain was recorded using a Visual Analogic Scale (VAS), and QoL using CLAS scales. Forty-five patients were enrolled in this trial. In phase I no Grade ≥ 2 acute toxicities were recorded. Thus 20 Gy was established as MTD. In phase II, with a median follow-up of 4 months, rates of complete symptom remission, partial response, no symptomatic change, and symptoms progression were 32.0%, 52.0%, 8.0%, and 8.0%, respectively. This RT protocol tested in our study is effective and tolerable with comparable results to traditional RT treatments delivered in 5-10 daily fractions.

Sirohi B, Chalkidou K, Pramesh CS, et al.
Developing institutions for cancer care in low-income and middle-income countries: from cancer units to comprehensive cancer centres.
Lancet Oncol. 2018; 19(8):e395-e406 [PubMed] Related Publications
Global cancer centres operate across different sizes, scales, and ecosystems. Understanding the essential aspects of the creation, organisation, accreditation, and activities within these settings is crucial for developing an affordable, equitable, and quality cancer care, research, and education system. Robust guidelines are scarce for cancer units, cancer centres, and comprehensive cancer centres in low-income and middle-income countries. However, some robust examples of the delivery of complex cancer care in centres in emerging economies are available. Although it is impossible to create an optimal system to fit the unique needs of all countries for the delivery of cancer care, we summarise what has been published about the development and management of cancer centres in low-income and middle-income countries so far and highlight the need for clinical and political leadership.

Kafita D, Kaile T, Malyangu E, et al.
Evidence of EBV infection in lymphomas diagnosed in Lusaka, Zambia.
Pan Afr Med J. 2018; 29:181 [PubMed] Free Access to Full Article Related Publications
Introduction: Epstein-Barr virus (EBV) is a ubiquitous virus that infects more than 90% of the world's population, and is implicated in lymphoma pathogenesis. However, in Zambia during the diagnosis of these lymphomas, the association of the virus with the lymphomas is not established. Since most patients with lymphomas have poor prognosis, the identification of the virus within the lymphoma lesion will allow for more targeted therapy. The aim of this study was to provide evidence of the presence of the EBV in lymphomas diagnosed at the University Teaching Hospital (UTH) in Lusaka, Zambia.
Methods: One hundred and fifty archival formalin-fixed paraffin embedded suspected lymphoma tissues stored over a 4-year period in the Histopathology Laboratory at the UTH in Lusaka, Zambia, were analysed. Histological methods were used to identify the lymphomas, and the virus was detected using Polymerase Chain Reaction (PCR). Subtyping of the virus was achieved through DNA sequencing of the EBNA-2 region of the viral genome. Chi square or fisher's exact test was used to evaluate the association between EBV status, type of lymphoma and gender.
Results: The majority of the lymphomas identified were non-Hodgkin's lymphoma (NHL) (80%) followed by Hodgkin's lymphoma (HL) (20%). EBV was detected in 51.8% of the cases, 54.5% of which were associated with NHL cases, while 40.9% associated with HL cases. The predominant subtype of the virus in both types of lymphomas was subtype 1. One of the lymphoma cases harboured both subtype 1 and 2 of the virus.
Conclusion: This study showed that EBV is closely associated with lymphomas. Therefore, providing evidence of the presence of the virus in lymphoma tissues will aid in targeted therapy. To our knowledge this is the first time such data has been generated in Zambia.

Mtonga W, Mujajati A, Munkombwe D, et al.
Therapeutic Outcomes in AIDS-Associated Kaposi's Sarcoma Patients on Antiretroviral Therapy Treated with Chemotherapy at Two Tertiary Hospitals in Lusaka, Zambia.
Curr HIV Res. 2018; 16(3):231-236 [PubMed] Related Publications
The incidence of HIV-associated Kaposi's sarcoma (KS) remains high in Zambia in the antiretroviral therapy era. The most efficacious treatment regimen for KS has yet to be established. In both developed and developing countries, treatment regimens have had limited efficacy. Late presentation in Africa affects therapeutic outcomes.
OBJECTIVE: The aim of this study was to determine therapeutic outcomes of epidemic KS patients on combination antiretroviral therapy (cART) after completion of six cycles of Adriamycin, Bleomycin, and Vincristine (ABV) chemotherapy.
METHODS: This was a descriptive cross-sectional study. Study participants were drawn from a study database of confirmed incident KS patients seen at the Skin Clinic of the University Teaching Hospitals (UTH) during the period between August, 2015 and September, 2016.
RESULTS: Of the 38 successfully recruited study participants, a complete response was documented in 18 (47%) after 6 cycles of ABV whereas 20 (53%) experienced a partial response. KS recurrence was observed in 8 (44%) of the individuals that experienced an initial complete response. At the time of the study, clinical assessment revealed that KS lesions had completely regressed in 21 (55%) of all the patients.
CONCLUSION: ABV chemotherapy appears ineffective in long-term resolution of epidemic KS patients on ART. Recurrence rates are high after chemotherapy in patients that experience initially favorable responses to treatment. There is a need to diagnose KS earlier, and to develop more efficacious treatment options in order to reduce recurrence rates for epidemic KS.

Kasanga M, Liu L, Xue L, Song X
Plasma heat shock protein 90-alpha have an advantage in diagnosis of colorectal cancer at early stage.
Biomark Med. 2018; 12(8):881-890 [PubMed] Related Publications
AIM: We investigated HSP90α as screening biomarker for early colorectal cancer (CRC).
METHODS & RESULTS: Seventy-seven CRC patients and 78 healthy controls were enrolled. Plasma HSP90α was significantly higher in CRC patients than in healthy controls (p < 0.05). levels were higher in late (stages III and IV) CRC than in early (stages I and II) CRC (p = 0.022). HSP90α conferred an advantage in the diagnosis of early CRC. Combination of HSP90α and carcinoembryonic antigen improved the diagnostic sensitivity (84.4%) and specificity (89.5%) for CRC (area under the curve: 0.968); for early CRC, the sensitivity was 82.5% and specificity was 89.5% (area under the curve: 0.955).
CONCLUSION: HSP90 is a potential biomarker for the diagnosis of early CRC.

Rohner E, Kasaro M, Msadabwe-Chikuni SC, et al.
Treatment and outcome of AIDS-related Kaposi sarcoma in South Africa, Malawi and Zambia: an international comparison.
Pan Afr Med J. 2017; 28:261 [PubMed] Free Access to Full Article Related Publications
HIV-related Kaposi sarcoma (KS) is common in sub-Saharan Africa, but optimal treatment strategies in resource-limited settings remain unclear. We did a retrospective cohort study of adults diagnosed with KS before initiating antiretroviral therapy (ART) at three ART programs in South Africa, Malawi and Zambia. We extracted data from medical charts at HIV clinics and oncological referral centers and used electronic data from the International epidemiology Databases to Evaluate AIDS Southern Africa. We used descriptive statistics to assess tumor (T) and systemic illness (S) stage and treatment of AIDS-KS patients. Kaplan-Meier analyses were used to assess survival after KS diagnosis. We analyzed data from 57 patients in total (20 from South Africa, 20 from Zambia, 17 from Malawi). Median age at KS diagnosis was 35 years and similar across sites. The percentage of patients with poor risk AIDS-KS (T1S1) was similar in South Africa (25%) and Malawi (24%) and higher in Zambia (45%). All AIDS-KS patients initiated ART at the HIV clinic. For KS care, in South Africa 18 patients (90%) were referred to an oncology department; in Malawi and Zambia most patients were managed by the HIV clinics. In Malawi and South Africa, most AIDS-KS patients received systemic chemotherapy, in Zambia one patient received chemotherapy at the HIV clinic. A year after KS diagnosis, 15 patients (75%) in South Africa, 10 patients (50%) in Zambia, and 8 patients (47%) in Malawi were still alive; another 3 patients (15%) in South Africa, 8 patients (40%) in Zambia and 4 patients (24%) in Malawi were lost to follow-up. Management of AIDS-KS patients varied considerably across sites in Malawi, South Africa and Zambia. We need more reliable survival data for AIDS-KS patients in sub-Saharan Africa before we can assess which treatments and clinical pathways should be adopted in a specific setting.

Kayamba V, Nicholls K, Morgan C, Kelly P
A seven-year retrospective review of colonoscopy records from a single centre in Zambia.
Malawi Med J. 2018; 30(1):17-21 [PubMed] Free Access to Full Article Related Publications
Introduction: Colorectal disease is common throughout the world, but the spectrum of diagnoses across Africa remains largely unexplored. There is anecdotal evidence of changing colorectal disease but this has not been systematically investigated. The aim of this study was to enhance our insight into the spectrum of colonoscopic diagnoses in Zambia.
Methods: We retrieved written colonoscopy reports from January 2008 to December 2015. Collected data were coded by experienced endoscopists and analysed by age, sex, referral source, indication and diagnosis.
Results: Included in this analysis were 573 colonoscopy reports. The most common diagnosis was haemorrhoids (n=151, 26%), followed by tumours (n=96,17%). Over this time period, the proportion of normal colonoscopies decreased by 32% (P<0.001), presumably due to introduction of screening of all requests, while the rate of polyp detection increased from 5% to 10% (P=0.006). The detection of polyps was highest in patients less than 16 years (OR 8.4; 95% CI 2.4-26.2, P<0.001). Of those with colorectal tumours, 33/96 (35%) were less than 45 years although the occurrence was higher with advancing age (P=0.02). Diverticular disease was more common in older age groups (median (IQR) age 70 (60-75) years, versus 47 (34-62) years for those without the disease; P=0.0001).
Conclusion: This audit has shown that more than a third of colorectal tumours seen during colonoscopy are in patients below the age of 45 years, with the occurrence of polyps being highest in those below 16 years. Diverticular disease is most common in older age groups.

Kisiangani J, Baliddawa J, Marinda P, et al.
Determinants of breast cancer early detection for cues to expanded control and care: the lived experiences among women from Western Kenya.
BMC Womens Health. 2018; 18(1):81 [PubMed] Free Access to Full Article Related Publications
BACKGROUND: Estimately, 70-80% of cancer cases are diagnosed in late stages in Kenya with breast cancer being a common cause of mortality among women where late diagnosis is the major ubiquitous concern. Numerous studies have focused on epidemiological and health policy dynamics essentially underestimating the determining factors that shape people's choices and cues to health care service uptake. The study sought to evaluate the knowledge, attitude and health seeking behavior towards breast cancer and its screening in a quest to explain why women present for prognosis and treatment when symptomatic pointers are in advanced stages, impeding primary prevention strategies.
METHODS: Eight focus groups (6-10 members per group) and four key informant interviews were conducted among adult participants from rural and urban settings. Sessions were audio-recorded and transcribed. A thematic analysis of the data was based on the concepts of the health belief model. Data analysis was conducted using NVIVO10.
RESULTS: Most women perceived breast cancer as a fatal disease and conveyed fear of having early screening. Rural women preferred self-prescribed medications and the use of alternative medicine for long periods before presenting for professional care on suspicion that the lump is cancerous. Accessibility to equipped health facilities, lack of information to establish effective follow-up treatment and low-income status were underscored as their major health seeking behavior barriers whereas, urban women identified marital status as their main barrier. Key informant interviews revealed that health communication programs emphasized more on communicable diseases. This could in part explain why there is a high rate of misconception and suspicion about breast cancer among rural and urban women in the study setting.
CONCLUSIONS: Creating breast cancer awareness alongside clear guidelines on accessing screening and treatment infrastructure is critical. It was evident, a diagnosis of breast cancer or lump brings unexpected confrontation with mortality; fear, pain, cultural barriers, emotional and financial distress. Without clear referral channels to enable those with suspicious lumps or early stage disease to get prompt diagnosis and treatment, then well-meaning awareness will not necessarily contribute to reducing morbidity and mortality.

Walubita M, Sikateyo B, Zulu JM
Challenges for health care providers, parents and patients who face a child hood cancer diagnosis in Zambia.
BMC Health Serv Res. 2018; 18(1):314 [PubMed] Free Access to Full Article Related Publications
BACKGROUND: Zambia is experiencing high prevalence of childhood cancer. However, very few children access and complete treatment for cancer. This study aimed to document the challenges for health care providers, parents and patients who face a child hood cancer diagnosis in Zambia, and their coping strategies.
METHODS: This was an exploratory health facility-based qualitative study that was conducted at a Paediatric oncology ward at referral hospital in Zambia. In-depth individual interviews conducted with fifteen (15) caregivers and seven (7) key informants were analysed using thematic analysis.
RESULTS: Several challenges related to managing the childhood cancer diagnosis were recorded. Individual and family challenges were inadequate knowledge on childhood cancer, lack of finances to meet treatment and transport costs as well as long period of hospitalisation that affected women's ability to perform multiple responsibilities. Whereas challenges at community level were inadequate support to address emotional and physical distress and social stigmatisation experienced by caregivers. Health systems issues included inadequate specialised health workers, poor communication among health workers, limited space and beds as well as insufficient supplies such as blood. Cultural related factors were the belief that cancer is a product of witchcraft as well as religious beliefs regarding the role of faith healing in childhood cancer treatment. Coping strategies used by parents/ caregivers included praying to God, material support from organisations and church as well as delaying having another child.
CONCLUSION: Addressing the challenges for health care providers, parents and patients who face a childhood cancer diagnosis may require adopting a systems or an ecological approach that allows developing strategies that simultaneously address challenges related to the individual, family, community, health system and cultural aspects.

Maliti B, Mbozi P
Disease Comanagement: A Case Study of HIV/AIDS and Cancer Care in Sub-Saharan Africa
Clin J Oncol Nurs. 2018; 22(2):228-231 [PubMed] Related Publications
Cancer care is increasingly complicated worldwide by its management with concurrent acute and chronic illness states. In low- and middle-income countries, including those in sub-Saharan Africa, this results in lower overall survival rates and a higher burden of cancer deaths. A case study is presented to highlight the challenges patients with cancer in Zambia-many of whom are also positive for HIV or AIDS-face in relationship to access to care and comanagement of disease states.

Nsokolo B, Kanunga A, Sinkala E, et al.
Stage of disease in hepatitis B virus infection in Zambian adults is associated with large cell change but not well defined using classic biomarkers.
Trans R Soc Trop Med Hyg. 2017; 111(9):425-432 [PubMed] Free Access to Full Article Related Publications
Background: Hepatocellular malignancy in young adults is a prominent feature of hepatitis B virus (HBV) infection in southern Africa. Here we report a cross-sectional study of liver pathology correlated with biomarkers in adults with HBV infection in Zambia.
Methods: We analysed liver biopsies from Zambian patients with persistent HBV infection.
Results: We analysed 104 patients with HBV infection and evidence of liver disease. We obtained liver biopsies from 53 adults; of these, 12 (23%) were hepatitis B e antigen seropositive. The genotype was evenly distributed between A and E. One biopsy showed malignancy. Stage was 3 or more in 11 of 52 (21%) biopsies free of malignancy and lobular inflammation was found in 50 (94%). Neither alanine aminotransferase (ALT) nor the γ-glutamyl transferase:platelet ratio (GPR) were correlated with the stage of disease but were correlated with total Ishak score (ρ=0.47, p=0.0004 and ρ=0.33, p=0.02, respectively). Large cell change was observed in 10 of 11 biopsies with fibrosis stage 3 or more and 16 of 41 with early disease (p=0.005). Serum α-fetoprotein was elevated, although still within the normal range, in patients with large cell change (median 3.6 [interquartile range {IQR} 1.6-5.1]) compared with those without (1.7 [IQR 1.0-2.8]; p=0.03). Neither ALT nor GPR predicted large cell change.
Conclusions: Large cell change was common in young HBV-infected adults in Zambia. Only serum α-fetoprotein was identified as a biomarker of this phenotype.

Tso FY, Kossenkov AV, Lidenge SJ, et al.
RNA-Seq of Kaposi's sarcoma reveals alterations in glucose and lipid metabolism.
PLoS Pathog. 2018; 14(1):e1006844 [PubMed] Free Access to Full Article Related Publications
Kaposi's sarcoma-associated herpesvirus (KSHV) is the etiologic agent of Kaposi's sarcoma (KS). It is endemic in a number of sub-Saharan African countries with infection rate of >50%. The high prevalence of HIV-1 coupled with late presentation of advanced cancer staging make KS the leading cancer in the region with poor prognosis and high mortality. Disease markers and cellular functions associated with KS tumorigenesis remain ill-defined. Several studies have attempted to investigate changes of the gene profile with in vitro infection of monoculture models, which are not likely to reflect the cellular complexity of the in vivo lesion environment. Our approach is to characterize and compare the gene expression profile in KS lesions versus non-cancer tissues from the same individual. Such comparisons could identify pathways critical for KS formation and maintenance. This is the first study that utilized high throughput RNA-seq to characterize the viral and cellular transcriptome in tumor and non-cancer biopsies of African epidemic KS patients. These patients were treated anti-retroviral therapy with undetectable HIV-1 plasma viral load. We found remarkable variability in the viral transcriptome among these patients, with viral latency and immune modulation genes most abundantly expressed. The presence of KSHV also significantly affected the cellular transcriptome profile. Specifically, genes involved in lipid and glucose metabolism disorder pathways were substantially affected. Moreover, infiltration of immune cells into the tumor did not prevent KS formation, suggesting some functional deficits of these cells. Lastly, we found only minimal overlaps between our in vivo cellular transcriptome dataset with those from in vitro studies, reflecting the limitation of in vitro models in representing tumor lesions. These findings could lead to the identification of diagnostic and therapeutic markers for KS, and will provide bases for further mechanistic studies on the functions of both viral and cellular genes that are involved.

Wigginton B, Farmer K, Kapambwe S, et al.
Death, contagion and shame: The potential of cancer survivors' advocacy in Zambia.
Health Care Women Int. 2018; 39(5):507-521 [PubMed] Related Publications
Cancer has become a global health concern with marked differences in the incidence and mortality rates between developing and developed countries. Understanding the factors that shape uptake of preventative and screening services is the key. We use in-depth interviews with 13 Zambian urban-based female cancer survivors to explore the facilitators and barriers to screening, diagnosis and treatment, with a particular focus on cultural influences. We identified a central theme (i.e. a story told about cancer) in all of the interviews: 'cancer is a death sentence'. Most women referenced this theme to describe their own, their family members', or community members' reactions to their diagnosis, along with references to cancer as 'contagious' and 'a shameful illness'. We also identified a theme entitled 'survivors as advocates', within which women described engaging in advocacy work to challenge stigma, misconceptions and misinformation about cancer; and advocating early detection and diagnosis, compliance with medical treatment and the sharing of success stories. This analysis points to the need for survivors to be front and center of preventative efforts. Their personal experiences, legitimacy and connections in the community, and their enthusiasm in helping others should be fostered, particularly in low-resource settings.

McKenzie F, Zietsman A, Galukande M, et al.
Drivers of advanced stage at breast cancer diagnosis in the multicountry African breast cancer - disparities in outcomes (ABC-DO) study.
Int J Cancer. 2018; 142(8):1568-1579 [PubMed] Free Access to Full Article Related Publications
Breast cancer (BC) survival rates in sub-Saharan Africa (SSA) are low in part due to advanced stage at diagnosis. As one component of a study of the entire journey of SSA women with BC, we aimed to identify shared and setting-specific drivers of advanced stage BC. Women newly diagnosed in the multicountry African Breast Cancer-Disparities in Outcomes (ABC-DO) study completed a baseline interview and their stage information was extracted from medical records. Ordinal logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (CI) for advanced stage (I, II, III, IV) in relation to individual woman-level, referral and biological factors. A total of 1795 women were included from Nigeria, Uganda, Zambia, and the multiracial populations of Namibia and South Africa, 1091 of whom (61%) were stage III/IV. Stage was lower in women with greater BC knowledge (OR 0.77 (95% CI: 0.70, 0.85) per point on a 6 point scale). More advanced stage was associated with being black (4.00 (2.79, 5.74)), having attended

Dochez C, Burnett RJ, Mbassi SM, et al.
Improving skills and institutional capacity to strengthen adolescent immunisation programmes and health systems in African countries through HPV vaccine introduction.
Papillomavirus Res. 2017; 4:66-71 [PubMed] Related Publications
Several African countries have recently introduced or are currently introducing the HPV vaccine, either nationwide or through demonstration projects, while some countries are planning for introduction. A collaborative project was developed to strengthen country adolescent immunisation programmes and health systems in the African Region, addressing unique public health considerations of HPV vaccination: adolescents as the primary target group, delivery platforms (e.g. school-based and facility based), socio-behavioural issues, and the opportunity to deliver other health interventions alongside HPV vaccination. Following a successful "taking-stock" meeting, a training programme was drafted to assist countries to strengthen the integration of adolescent health interventions using HPV vaccination as an entry point. Two workshops were conducted in the Eastern and Southern African Regions. All countries reported on progress made during a final joint symposium. Of the 20 countries invited to participate in either of the workshops and/or final symposium, 17 countries participated: Angola, Botswana, Ethiopia, Kenya, Malawi, Mauritius, Mozambique, Namibia, Rwanda, Seychelles, South Africa, South Sudan, Swaziland, Tanzania, Uganda, Zambia and Zimbabwe. Countries that are currently implementing HPV vaccination programmes, either nationally or through demonstration projects, reported varying degrees of integration with other adolescent health interventions. The most commonly reported adolescent health interventions alongside HPV vaccination include health education (including sexually transmitted infections), deworming and delivering of other vaccines like tetanus toxoid (TT) or tetanus diphtheria (Td). The project has successfully (a) established an African-based network that will advocate for incorporating the HPV vaccine into national immunisation programmes; (b) created a platform for experience exchange and thereby contributed to novel ideas of revitalising and strengthening school-based health programmes as delivery platform of adolescent immunisation services and other adolescent health interventions, as well as identifying ways of reaching out-of-school girls through facility and community based programmes; and (c) laid a foundation for incorporating future adolescent vaccination programmes.

Hamoonga TE, Likwa RN, Musonda P, Michelo C
Higher educational attainment associated with reduced likelihood of abnormal cervical lesions among Zambian women - a cross sectional study.
BMC Cancer. 2017; 17(1):681 [PubMed] Free Access to Full Article Related Publications
BACKGROUND: The high burden of cervical cancer in Zambia prompted the Ministry of Health and partners to develop the cervical cancer prevention program in Zambia (CCPPZ) in 2006. Despite this intervention more women continue to die from the disease and there is little understanding of factors that may be linked with abnormal cervical lesions in the general population. We therefore examined if educational attainment is associated with abnormal cervical lesions among Zambian women aged 15 to 49 years.
METHODS: This study used data from the cervical cancer prevention program in Zambia, where a total of 14,294 women aged 15 to 49 years were screened for cervical cancer at nine health facilities between October 2013 and September 2014. The data represents women from six provinces of Zambia, namely Southern, Central, Copperbelt, Luapula, North-western and Eastern provinces. Step-wise logistic regression analysis using the Statistical Package for the Social Sciences (SPSS) version 21 was used to estimate adjusted odds ratios (AOR) and 95% confidence intervals (CIs) for educational attainment with presence of abnormal cervical lesions as outcome. Multiple imputation was further used to obtain the imputed stabilized estimates for educational attainment.
RESULTS: The prevalence of abnormal cervical lesions, using the Visual Inspection with Acetic-acid (VIA) test was 10.7% (n = 1523). Educational attainment was inversely associated with abnormal cervical lesions (AOR = 0.75; 95% CI:0.70-0.81, AOR = 0.74; 95% CI:0.68-0.81 and AOR = 0.46; 95% CI:0.41-0.51) among women with primary, secondary and tertiary education, respectively, compared to those with no formal education.
CONCLUSION: We find reduced likelihood of abnormal cervical lesions in educated women, suggesting a differential imbalance with women who have no formal education. These findings may be a reflection of inequalities associated with access to cervical cancer screening, making the service inadequately accessible for lower educated groups. This might also indicate serious limitations in awareness efforts instituted in the formative phases of the program. These findings underline the prevailing need for urgent concerted efforts in repackaging cervical cancer awareness programs targeting women with low or no formal education in whom the risk may be even higher.

Kayamba V, Heimburger DC, Morgan DR, et al.
Exposure to biomass smoke as a risk factor for oesophageal and gastric cancer in low-income populations: A systematic review.
Malawi Med J. 2017; 29(2):212-217 [PubMed] Free Access to Full Article Related Publications
BACKGROUND: Upper gastrointestinal cancers contribute significantly to cancer-related morbidity and mortality in sub-Saharan Africa, but they continue to receive limited attention. The high incidence in young adults remains unexplained, and the risk factors have not been fully described.
METHODS: A literature search was conducted using the electronic database PubMed. Beginning from January 1980 to February 2016, all articles evaluating biomass smoke exposure with oesophageal and gastric cancer were reviewed.
RESULTS: Over 70% of the African population relies on biomass fuel, meaning most Africans are exposed to biomass smoke throughout their lives. Cigarette smoke is an established risk factor for upper gastrointestinal cancers, and some of its carcinogenic constituents are also present in biomass smoke. We found eight case-control studies reporting associations between exposure to biomass smoke and oesophageal cancer, and two linking biomass smoke to gastric cancer. All of these papers reported significant positive associations between exposure and cancer risk. Further research is needed in order to fully define the constituents of biomass smoke, which could each have varying specific and synergistic or independent contributions to the development of upper gastrointestinal cancers.
CONCLUSIONS: Exposure to biomass smoke is an environmental factor influencing the development of upper gastrointestinal cancers, especially in low-resource settings.

Tembo R, Kaile T, Kafita D, et al.
Detection of Human Herpes Virus 8 in Kaposi's sarcoma tissues at the University Teaching Hospital, Lusaka, Zambia.
Pan Afr Med J. 2017; 27:137 [PubMed] Free Access to Full Article Related Publications
INTRODUCTION: Human herpes virus-8, a γ2-herpes virus, is the aetiological agent of Kaposi sarcoma. Recently, Kaposi's sarcoma cases have increased in Zambia. However, the diagnosis of this disease is based on morphological appearance of affected tissues using histological techniques, and the association with its causative agent, Human Herpes virus 8 is not sought. This means poor prognosis for affected patients since the causative agent is not targeted during diagnosis and KS lesions may be mistaken for other reactive and neoplastic vascular proliferations when only histological techniques are used. Therefore, this study was aimed at providing evidence of Human Herpes virus 8 infection in Kaposi's sarcoma tissues at the University Teaching Hospital in Lusaka, Zambia.
METHODS: One hundred and twenty suspected Kaposi's sarcoma archival formalin-fixed paraffin-wax embedded tissues stored from January 2013 to December 2014 in the Histopathology Laboratory at the University Teaching Hospital, Lusaka, Zambia were analysed using histology and Polymerase Chain Reaction targeting the ORF26 gene of Human Herpes virus 8.
RESULTS: The predominant histological type of Kaposi's sarcoma detected was the Nodular type (60.7%) followed by the plaque type (22.6%) and patch type (16.7%). The nodular lesion was identified mostly in males (40.5%, 34/84) than females (20.2%, 17/84) (p=0.041). Human Herpes virus 8 DNA was detected in 53.6% (45/84) and mostly in the nodular KS lesions (60%, 27/84) (p=0.035).
CONCLUSION: The findings in this study show that the Human Herpes virus-8 is detectable in Kaposi's sarcoma tissues, and, as previously reported in other settings, is closely associated with Kaposi's sarcoma. The study has provided important baseline data for use in the diagnosis of this disease and the identification of the virus in the tissues will aid in targeted therapy.

Holme F, Kapambwe S, Nessa A, et al.
Scaling up proven innovative cervical cancer screening strategies: Challenges and opportunities in implementation at the population level in low- and lower-middle-income countries.
Int J Gynaecol Obstet. 2017; 138 Suppl 1:63-68 [PubMed] Related Publications
The problem of cervical cancer in low- and lower-middle-income countries (LLMICs) is both urgent and important, and calls for governments to move beyond pilot testing to population-based screening approaches as quickly as possible. Experiences from Zambia, Bangladesh, Guatemala, Honduras, and Nicaragua, where scale-up of evidence-based screening strategies is taking place, may help other countries plan for large-scale implementation. These countries selected screening modalities recommended by the WHO that are within budgetary constraints, improve access for women, and reduce health system bottlenecks. In addition, some common elements such as political will and government investment have facilitated action in these diverse settings. There are several challenges for continued scale-up in these countries, including maintaining trained personnel, overcoming limited follow-up and treatment capacity, and implementing quality assurance measures. Countries considering scale-up should assess their readiness and conduct careful planning, taking into consideration potential obstacles. International organizations can catalyze action by helping governments overcome initial barriers to scale-up.

Venturas C, Umeh K
Health professional feedback on HPV vaccination roll-out in a developing country.
Vaccine. 2017; 35(15):1886-1891 [PubMed] Related Publications
BACKGROUND: Worldwide, Zambia has the highest cervical cancer incidence rates (58.4/100,000 per year) and mortality rates (36.2/100,000 per year). The human papilloma virus (HPV) vaccine is considered a vital preventative measure against cervical cancer, particularly in sub-Saharan countries, such as Zambia. Past research suggests health professionals' experiences with HPV vaccination rollout can have practical implications for effective delivery.
OBJECTIVE: To explore health professionals' perspectives on the HPV vaccination programme in Zambia.
METHODS: Researcher travelled to Zambia and conducted semi-structured interviews with fifteen health professionals working in private, government, and missionary clinics/hospitals. Observation was conducted for triangulation purposes. Thematic analysis was used to analyse the data.
FINDINGS: Five main themes emerged; medical misconceptions about the HPV vaccination, particularly with regards to infertility; fear of the unknown, including possible side effects and inadequate empirical research; need for prior desensitisation to resolve cultural barriers prior to vaccination rollout; a rural-urban divide in health awareness, particularly in relation to cancer vaccines; and economic concerns associated with access to the HPV vaccination for most of the Zambian population.
CONCLUSION: Overall, the findings indicate that an essential avenue for facilitating HPV vaccination rollout in Zambia is by implementing a pre-rollout community effort that removes or softens cultural barriers, particularly in rural areas. It is also essential to correct erroneous HPV presumptions health professionals may have around infertility. Affordability remains a seemingly intractable hindrance that hampers HPV vaccination rollout in Zambia.

Tso FY, Sawyer A, Kwon EH, et al.
Kaposi's Sarcoma-Associated Herpesvirus Infection of Neurons in HIV-Positive Patients.
J Infect Dis. 2017; 215(12):1898-1907 [PubMed] Free Access to Full Article Related Publications
Background: Kaposi's sarcoma-associated herpesvirus (KSHV) is the causative agent of Kaposi sarcoma (KS), one of the leading cancers in human immunodeficiency virus (HIV)-infected patients in Zambia. KSHV was detected in the human central nervous system (CNS) by polymerase chain reaction (PCR) analysis, but tissue location and cell tropism for KSHV infection has not been established. Given the neurotropism exhibited by other herpesviruses and the frequent coinfection of HIV-positive individuals by KSHV, we sought to determine whether the central nervous system (CNS) can be infected by KSHV in HIV-positive Zambian individuals.
Methods: Postmortem brain tissue specimens were collected from individuals coinfected with KSHV and HIV. PCR and Southern blots were performed on DNA extracted from the brain tissue specimens to verify KSHV infection. Immunohistochemical analysis and immunofluorescent microscopy were used to localize and identify KSHV-infected cells. Tropism was further established by in vitro infection of primary human neurons with rKSHV.219.
Results: KSHV DNA was detected in the CNS from 4 of 11 HIV-positive individuals. Immunohistochemical analysis and immunofluorescent microscopy demonstrated that KSHV infected neurons and oligodendrocytes in parenchymal brain tissues. KSHV infection of neurons was confirmed by in vitro infection of primary human neurons with rKSHV.219.
Conclusion: Our study showed that KSHV infects human CNS-resident cells, primarily neurons, in HIV-positive Zambian individuals.

Shen Y, Zhang XY, Chen X, et al.
Synthetic paclitaxel-octreotide conjugate reverses the resistance of paclitaxel in A2780/Taxol ovarian cancer cell line.
Oncol Rep. 2017; 37(1):219-226 [PubMed] Related Publications
The high mortality of ovarian cancer is partly due to the frequent resistance of ovarian cancer to current chemotherapy agents such as paclitaxel and platinum. Somatostatin analogue (SSTA) has been shown to inhibit the proliferation of some tumors through binding to somatostatin receptor (SSTR) and activation of Ras-, Rapl- and B-Raf-dependent extracellular signal-regulated kinase 2 (Erk2). It was reported that paclitaxel-octreotide conjugate (POC) exhibited enhanced tumor growth inhibition with reduced toxicity. In the present study, we prepared the POC and investigated its effects and mechanism for the reversal of drug resistance in paclitaxel-resistant ovarian cancer cell line. We demonstrated that treatment with POC led to more cell apoptosis than either paclitaxel or octreotide (OCT) alone. Moreover, the expression of multidrug resistance 1 (MDR1) and vascular endothelial growth factor (VEGF) mRNA, and protein decreased in a dose-dependent manner while the expression of SSTR remained stable following treatment with POC. Although the exact action, in vivo effects and pharmacologic kinetics of POC remain to be investigated, we have demonstrated the feasibility for the synthesis of POC, and more significantly, provided a potential approach to overcome the resistance of ovarian cancer against taxol. The findings also shed some new light on the mechanisms underlying the development of resistance to taxol by ovarian cancer cells.

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