202 results on '"Jalloh M"'
Search Results
102. Seroprevalence of Chikungunya in an Asymptomatic Adult Population in North and South Sulawesi, Indonesia.
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A Jalloh M, Artika IM, P Dewi Y, Syafruddin D, Idris I, B B Bernadus J, Telew A, S Purwanto D, D Rosita Y, Antonjaya U, and S A Myint K
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- Adult, Humans, Indonesia epidemiology, Seroepidemiologic Studies, Antibodies, Viral, Immunoglobulin G, Chikungunya Fever
- Abstract
Chikungunya (CHIK) is an emerging and reemerging infectious disease of public health importance in Indonesia. Information on the asymptomatic and true burden of CHIK virus (CHIKV) infections is limited. We assayed 1,092 healthy population samples, collected in North and South Sulawesi between 2019 and 2020, for antibodies against CHIKV. Blood samples were screened by IgM and IgG ELISAs and quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR) assay. CHIKV IgG seroprevalence in North and South Sulawesi was 53.2% and 53.9%, respectively. The overall prevalence of anti-CHIKV IgM antibody was 12.9%. Molecular testing of blood donors revealed 0.66% (2/300) were positive for CHIKV qRT-PCR. Our study provides new insights into the CHIKV endemicity situation in the eastern part of Indonesia and warrants the need for further systematic surveillance considering there is no treatment or vaccine for CHIK infection.
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- 2022
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103. [Sexuality assessment of homozygous adult sickle cell patients with a history of priapism in Senegal].
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Gaye O, Seck M, Gueye SM, Touré SA, Diallo AI, Faye BF, Thiam NM, Bousso ES, Jalloh M, Ndoye M, Niang L, Fall PA, Diop S, and Gueye SM
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- Adult, Case-Control Studies, Humans, Male, Senegal, Sexuality, Young Adult, Anemia, Sickle Cell complications, Anemia, Sickle Cell epidemiology, Erectile Dysfunction epidemiology, Priapism etiology
- Abstract
Objectives: The objective of this study was to evaluate the sexuality of SS sickle cell patients with a history of priapism., Methods: This was a case-control study of adult SS sickle cell patients. The occurrence of priapism as well as the nature of the priapism had been investigated. The patients were subdivided into three groups: Group 1 (no priapism), Group 2 (intermittent priapism) and Group 3 (acute priapism). The patients' sexuality was studied using the IIEF-15 questionnaire., Results: We interviewed 191 SS sickle cell patients. The mean age was 27.1±7.1 years. Priapism was observed in 43.5 %. Only 77 patients were eligible for the IIEF15 questionnaire. Groups 1 and 2 performed significantly better than group 3 on erectile function (EF) and orgasmic function (OF) scores. There was no significant difference in the EF and OF scores between groups 1 and 2. No significant difference was observed between the three groups for the scores of sexual desire (SD), intercourse satisfaction (IS), and overall satisfaction (OS). The impairment of erectile function in group 2 was related to the age of the first episode of priapism and the last episode. The impairment of erectile function in group 3 was related to the duration of evolution (P<0.05)., Conclusion: This study shows that priapism is responsible for impaired erectile function in SS adult sickle cell patients. A program to prevent intermittent episodes of priapism should be put in place., (Copyright © 2022 Elsevier Masson SAS. All rights reserved.)
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- 2022
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104. Testing the generalizability of ancestry-specific polygenic risk scores to predict prostate cancer in sub-Saharan Africa.
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Kim MS, Naidoo D, Hazra U, Quiver MH, Chen WC, Simonti CN, Kachambwa P, Harlemon M, Agalliu I, Baichoo S, Fernandez P, Hsing AW, Jalloh M, Gueye SM, Niang L, Diop H, Ndoye M, Snyper NY, Adusei B, Mensah JE, Abrahams AOD, Biritwum R, Adjei AA, Adebiyi AO, Shittu O, Ogunbiyi O, Adebayo S, Aisuodionoe-Shadrach OI, Nwegbu MM, Ajibola HO, Oluwole OP, Jamda MA, Singh E, Pentz A, Joffe M, Darst BF, Conti DV, Haiman CA, Spies PV, van der Merwe A, Rohan TE, Jacobson J, Neugut AI, McBride J, Andrews C, Petersen LN, Rebbeck TR, and Lachance J
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- Africa South of the Sahara epidemiology, Genetic Predisposition to Disease, Humans, Male, Risk Factors, Genome-Wide Association Study, Prostatic Neoplasms genetics
- Abstract
Background: Genome-wide association studies do not always replicate well across populations, limiting the generalizability of polygenic risk scores (PRS). Despite higher incidence and mortality rates of prostate cancer in men of African descent, much of what is known about cancer genetics comes from populations of European descent. To understand how well genetic predictions perform in different populations, we evaluated test characteristics of PRS from three previous studies using data from the UK Biobank and a novel dataset of 1298 prostate cancer cases and 1333 controls from Ghana, Nigeria, Senegal, and South Africa., Results: Allele frequency differences cause predicted risks of prostate cancer to vary across populations. However, natural selection is not the primary driver of these differences. Comparing continental datasets, we find that polygenic predictions of case vs. control status are more effective for European individuals (AUC 0.608-0.707, OR 2.37-5.71) than for African individuals (AUC 0.502-0.585, OR 0.95-2.01). Furthermore, PRS that leverage information from African Americans yield modest AUC and odds ratio improvements for sub-Saharan African individuals. These improvements were larger for West Africans than for South Africans. Finally, we find that existing PRS are largely unable to predict whether African individuals develop aggressive forms of prostate cancer, as specified by higher tumor stages or Gleason scores., Conclusions: Genetic predictions of prostate cancer perform poorly if the study sample does not match the ancestry of the original GWAS. PRS built from European GWAS may be inadequate for application in non-European populations and perpetuate existing health disparities., (© 2022. The Author(s).)
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- 2022
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105. Endovascular Tamponade of Iatrogenic Vessel Perforation With Temporary Coiling: 2-Dimensional Operative Video.
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Javed K, Jalloh M, Cezayirli P, Haranhalli N, and Altschul DJ
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- Humans, Iatrogenic Disease, Aneurysm, Ruptured surgery, Intracranial Aneurysm surgery
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- 2022
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106. Prevalence of vulvovaginal candidiasis among pregnant women in Africa: A systematic review and meta-analysis.
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Osman Mohamed A, Suliman Mohamed M, Hussain Mallhi T, Abdelrahman Hussain M, Ali Jalloh M, Ali Omar K, Omar Alhaj M, and Makki Mohamed Ali AA
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- Africa epidemiology, Female, Humans, Infant, Newborn, Pregnancy, Pregnant Women, Prevalence, Candidiasis, Vulvovaginal epidemiology, Premature Birth
- Abstract
Introduction: Vulvovaginal candidiasis (VVC) is a yeast infection of the vulva, which is caused by Candida species and affects women worldwide. Pregnant women are more vulnerable to VVC due to certain risks. Moreover, their offspring are also exposed to the risk of preterm birth. In this context, ascertaining the burden of VVC is of paramount importance and this meta-analysis was conducted to estimate the occurrence of VVC among pregnant women in Africa., Methodology: Database search was carried out through PubMed, Scopus, Science-Direct, and Google Scholar from the date of inception until December 2020. All the studies on the prevalence of VVC among African pregnant women were included in the analysis. The pooled prevalence was estimated based on the Random-effect model DerSimonian-Laird approach with Freeman- Tukey double arcsine transformed proportion. Heterogeneity was assessed using I2 test and subsequently explored using subgroup and meta-regression analysis., Results: A total of Sixteen records having a sample size 4,185 were included in this study. The overall prevalence of VVC was pooled at 29.2% (CI 95%: 23.4 - 33.0). Subgroup analysis revealed a higher prevalence in Eastern Africa, followed by Western Africa and North Africa (35%, 28%, and 15% respectively). Moderator analysis indicated that the studies that used advanced methods of detection had a higher prevalence (p = 0.048). In addition, the large sample size was associated with higher prevalence (p ≤ 0.001). No other moderators were found to be statistically significant., Conclusions: The overall prevalence of VVC among African pregnant women is comparable to other studies worldwide. However, appropriate identification techniques and larger sample size could likely be associated with an increased prevalence. Our findings necessitate the need for further investigations to determine the geographical distribution of VVC across African regions., Competing Interests: No Conflict of Interest is declared, (Copyright (c) 2022 Ahmed Osman Mohamed, Malik Suliman Mohamed, Tauqeer Hussain Mallhi, Mohamed Abdelrahman Hussain, Mohammad Ali Jalloh, Khatib Ali Omar, Manasik Omar Alhaj, Alaa Aldeen Makki Mohamed Ali.)
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- 2022
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107. Validation of a multi-ancestry polygenic risk score and age-specific risks of prostate cancer: A meta-analysis within diverse populations.
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Chen F, Darst BF, Madduri RK, Rodriguez AA, Sheng X, Rentsch CT, Andrews C, Tang W, Kibel AS, Plym A, Cho K, Jalloh M, Gueye SM, Niang L, Ogunbiyi OJ, Popoola O, Adebiyi AO, Aisuodionoe-Shadrach OI, Ajibola HO, Jamda MA, Oluwole OP, Nwegbu M, Adusei B, Mante S, Darkwa-Abrahams A, Mensah JE, Adjei AA, Diop H, Lachance J, Rebbeck TR, Ambs S, Gaziano JM, Justice AC, Conti DV, and Haiman CA
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- Age Factors, Case-Control Studies, Genetic Predisposition to Disease, Humans, Male, Middle Aged, Multifactorial Inheritance, Risk Factors, United States epidemiology, Genome-Wide Association Study, Prostatic Neoplasms epidemiology, Prostatic Neoplasms genetics
- Abstract
Background: We recently developed a multi-ancestry polygenic risk score (PRS) that effectively stratifies prostate cancer risk across populations. In this study, we validated the performance of the PRS in the multi-ancestry Million Veteran Program and additional independent studies., Methods: Within each ancestry population, the association of PRS with prostate cancer risk was evaluated separately in each case-control study and then combined in a fixed-effects inverse-variance-weighted meta-analysis. We further assessed the effect modification by age and estimated the age-specific absolute risk of prostate cancer for each ancestry population., Results: The PRS was evaluated in 31,925 cases and 490,507 controls, including men from European (22,049 cases, 414,249 controls), African (8794 cases, 55,657 controls), and Hispanic (1082 cases, 20,601 controls) populations. Comparing men in the top decile (90-100% of the PRS) to the average 40-60% PRS category, the prostate cancer odds ratio (OR) was 3.8-fold in European ancestry men (95% CI = 3.62-3.96), 2.8-fold in African ancestry men (95% CI = 2.59-3.03), and 3.2-fold in Hispanic men (95% CI = 2.64-3.92). The PRS did not discriminate risk of aggressive versus nonaggressive prostate cancer. However, the OR diminished with advancing age (European ancestry men in the top decile: ≤55 years, OR = 7.11; 55-60 years, OR = 4.26; >70 years, OR = 2.79). Men in the top PRS decile reached 5% absolute prostate cancer risk ~10 years younger than men in the 40-60% PRS category., Conclusions: Our findings validate the multi-ancestry PRS as an effective prostate cancer risk stratification tool across populations. A clinical study of PRS is warranted to determine whether the PRS could be used for risk-stratified screening and early detection., Funding: This work was supported by the National Cancer Institute at the National Institutes of Health (grant numbers U19 CA214253 to C.A.H., U01 CA257328 to C.A.H., U19 CA148537 to C.A.H., R01 CA165862 to C.A.H., K99 CA246063 to B.F.D, and T32CA229110 to F.C), the Prostate Cancer Foundation (grants 21YOUN11 to B.F.D. and 20CHAS03 to C.A.H.), the Achievement Rewards for College Scientists Foundation Los Angeles Founder Chapter to B.F.D, and the Million Veteran Program-MVP017. This research has been conducted using the UK Biobank Resource under application number 42195. This research is based on data from the Million Veteran Program, Office of Research and Development, and the Veterans Health Administration. This publication does not represent the views of the Department of Veteran Affairs or the United States Government., Competing Interests: FC, AR, XS, CR, CA, WT, AK, AP, KC, MJ, SG, LN, OO, OP, AA, OA, HA, MJ, OO, MN, BA, SM, AD, JM, AA, HD, JL, TR, SA, JG, AJ, DC, CH No competing interests declared, BD received honorarium for presentations at Society of Urology Oncology Annual Meeting (2021) and the Social Genomics Group at the University of Wisconsin, Madison (2021). The author has no other competing interests to declare, RM has stock or stock options in Navipoint Genomics LLC. The author has no other competing interests to declare
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- 2022
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108. A Rare Germline HOXB13 Variant Contributes to Risk of Prostate Cancer in Men of African Ancestry.
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Darst BF, Hughley R, Pfennig A, Hazra U, Fan C, Wan P, Sheng X, Xia L, Andrews C, Chen F, Berndt SI, Kote-Jarai Z, Govindasami K, Bensen JT, Ingles SA, Rybicki BA, Nemesure B, John EM, Fowke JH, Huff CD, Strom SS, Isaacs WB, Park JY, Zheng W, Ostrander EA, Walsh PC, Carpten J, Sellers TA, Yamoah K, Murphy AB, Sanderson M, Crawford DC, Gapstur SM, Bush WS, Aldrich MC, Cussenot O, Petrovics G, Cullen J, Neslund-Dudas C, Kittles RA, Xu J, Stern MC, Chokkalingam AP, Multigner L, Parent ME, Menegaux F, Cancel-Tassin G, Kibel AS, Klein EA, Goodman PJ, Stanford JL, Drake BF, Hu JJ, Clark PE, Blanchet P, Casey G, Hennis AJM, Lubwama A, Thompson IM Jr, Leach RJ, Gundell SM, Pooler L, Mohler JL, Fontham ETH, Smith GJ, Taylor JA, Brureau L, Blot WJ, Biritwum R, Tay E, Truelove A, Niwa S, Tettey Y, Varma R, McKean-Cowdin R, Torres M, Jalloh M, Magueye Gueye S, Niang L, Ogunbiyi O, Oladimeji Idowu M, Popoola O, Adebiyi AO, Aisuodionoe-Shadrach OI, Nwegbu M, Adusei B, Mante S, Darkwa-Abrahams A, Yeboah ED, Mensah JE, Anthony Adjei A, Diop H, Cook MB, Chanock SJ, Watya S, Eeles RA, Chiang CWK, Lachance J, Rebbeck TR, Conti DV, and Haiman CA
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- Case-Control Studies, Genetic Predisposition to Disease, Germ Cells pathology, Germ-Line Mutation, Homeodomain Proteins genetics, Humans, Male, Prostate-Specific Antigen genetics, Early Detection of Cancer, Prostatic Neoplasms genetics, Prostatic Neoplasms pathology
- Abstract
A rare African ancestry-specific germline deletion variant in HOXB13 (X285K, rs77179853) was recently reported in Martinican men with early-onset prostate cancer. Given the role of HOXB13 germline variation in prostate cancer, we investigated the association between HOXB13 X285K and prostate cancer risk in a large sample of 22 361 African ancestry men, including 11 688 prostate cancer cases. The risk allele was present only in men of West African ancestry, with an allele frequency in men that ranged from 0.40% in Ghana and 0.31% in Nigeria to 0% in Uganda and South Africa, with a range of frequencies in men with admixed African ancestry from North America and Europe (0-0.26%). HOXB13 X285K was associated with 2.4-fold increased odds of prostate cancer (95% confidence interval [CI] = 1.5-3.9, p = 2 × 10
-4 ), with greater risk observed for more aggressive and advanced disease (Gleason ≥8: odds ratio [OR] = 4.7, 95% CI = 2.3-9.5, p = 2 × 10-5 ; stage T3/T4: OR = 4.5, 95% CI = 2.0-10.0, p = 2 × 10-4 ; metastatic disease: OR = 5.1, 95% CI = 1.9-13.7, p = 0.001). We estimated that the allele arose in West Africa 1500-4600 yr ago. Further analysis is needed to understand how the HOXB13 X285K variant impacts the HOXB13 protein and function in the prostate. Understanding who carries this mutation may inform prostate cancer screening in men of West African ancestry. PATIENT SUMMARY: A rare African ancestry-specific germline deletion in HOXB13, found only in men of West African ancestry, was reported to be associated with an increased risk of overall and advanced prostate cancer. Understanding who carries this mutation may help inform screening for prostate cancer in men of West African ancestry., (Copyright © 2022. Published by Elsevier B.V.)- Published
- 2022
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109. Overall and central obesity and prostate cancer risk in African men.
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Agalliu I, Lin WJ, Zhang JS, Jacobson JS, Rohan TE, Adusei B, Snyper NYF, Andrews C, Sidahmed E, Mensah JE, Biritwum R, Adjei AA, Okyne V, Ainuson-Quampah J, Fernandez P, Irusen H, Odiaka E, Folasire OF, Ifeoluwa MG, Aisuodionoe-Shadrach OI, Nwegbu MM, Pentz A, Chen WC, Joffe M, Neugut AI, Diallo TA, Jalloh M, Rebbeck TR, Adebiyi AO, and Hsing AW
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- Body Mass Index, Case-Control Studies, Humans, Male, Obesity complications, Obesity epidemiology, Risk Factors, Waist Circumference, Waist-Hip Ratio, Obesity, Abdominal complications, Obesity, Abdominal epidemiology, Prostatic Neoplasms epidemiology, Prostatic Neoplasms etiology
- Abstract
Purpose: African men are disproportionately affected by prostate cancer (PCa). Given the increasing prevalence of obesity in Africa, and its association with aggressive PCa in other populations, we examined the relationship of overall and central obesity with risks of total and aggressive PCa among African men., Methods: Between 2016 and 2020, we recruited 2,200 PCa cases and 1,985 age-matched controls into a multi-center, hospital-based case-control study in Senegal, Ghana, Nigeria, and South Africa. Participants completed an epidemiologic questionnaire, and anthropometric factors were measured at clinic visit. Multivariable logistic regression was used to examine associations of overall and central obesity with PCa risk, measured by body mass index (BMI), waist circumference (WC), waist-to-hip ratio (WHR), and waist-to-height ratio (WHtR), respectively., Results: Among controls 16.4% were obese (BMI ≥ 30 kg/m
2 ), 26% and 90% had WC > 97 cm and WHR > 0.9, respectively. Cases with aggressive PCa had lower BMI/obesity in comparison to both controls and cases with less aggressive PCa, suggesting weight loss related to cancer. Overall obesity (odds ratio: OR = 1.38, 95% CI 0.99-1.93), and central obesity (WC > 97 cm: OR = 1.60, 95% CI 1.10-2.33; and WHtR > 0.59: OR = 1.68, 95% CI 1.24-2.29) were positively associated with D'Amico intermediate-risk PCa, but not with risks of total or high-risk PCa. Associations were more pronounced in West versus South Africa, but these differences were not statistically significant., Discussion: The high prevalence of overall and central obesity in African men and their association with intermediate-risk PCa represent an emerging public health concern in Africa. Large cohort studies are needed to better clarify the role of obesity and PCa in various African populations., (© 2021. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)- Published
- 2022
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110. Urethral Prolapse Case Report: Surgical and Social Considerations in Senegal.
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Jalloh M, Heibig J, Gaye O, Ghaul W, Yankelevich G, Ndoye M, Mbodji MM, Cassell A, Niang L, and Gueye SM
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We present three cases of urethral prolapse in prepubertal females in Senegal who presented with vulvar bleeding. Careful gynecologic and urologic physical exams were performed and revealed urethral origin and prolapse. Conservative versus surgical approaches were taken in different patients, but ultimately, each patient received a urethral meatoplasty. Surgical excision of these masses yielded a full recovery in the patients. A careful review of the literature was then undertaken and showed that surgical excision or ligation of the prolapse is preferable to more conservative treatment. The case series article discusses the rare occurrence of urethral prolapse, as well as the epidemiology and prognostic and therapeutic implications of urethral prolapse in prepubertal females. Introduction . Urethral prolapse is a rare condition occurring mostly in young black females. It can be worrying to the parents as it often causes vulvar bleeding. Case Presentation . We present three cases of urethral prolapse in prepubertal females who presented with vulvar bleeding. Physical exams were performed and revealed urethral origin and prolapse. Each patient underwent a urethral meatoplasty and subsequently experienced a full recovery after respective follow-up of 2 years, 1 year, and 1 year. Conclusion . Urethral prolapse is a rare condition which can be managed successfully by surgery. Plain Language Summary . This case report on pediatric urethral prolapse showcases the different presentations and modalities of treatment, as the literature does not show that a specific treatment is always undertaken. In some countries, there are strong social considerations and they demonstrate difficulty separating sexual abuse from genitourinary pathologies, which are important to address in the treatment of these conditions., Competing Interests: I am pleased to submit the case report “Urethral Prolapse Case Report: Surgical and Social Considerations in Senegal” for consideration in Research and Reports in Urology. I declare there is no conflict of interest related to this work and publication for myself and my co-authors., (Copyright © 2022 Mohamed Jalloh et al.)
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- 2022
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111. Combining ability analysis in bitter gourd (Momordica charantia L.) for potential quality improvement.
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Kundu BC, Mohsin GM, Rahman MS, Ahamed F, Mahato AK, Hossain KMD, Jalloh MB, and Alam MA
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- Crops, Agricultural, Flowers, Fruit genetics, Quality Improvement, Momordica charantia
- Abstract
Combining ability analysis provides useful information for the selection of parents, also information regarding the nature and magnitude of involved gene actions. Crops improvement involves strategies for enhancing yield potentiality and quality components. Targeting the improvement of respective characters in bitter gourd, combining ability and genetic parameters for 19 characters were estimated from a 6×6 full diallel analysis technique. The results revealed that the variances due to general combining ability (GCA) and specific combining ability (SCA) were highly significant for most of the important characters. It indicated the importance of both additive and non-additive gene actions. GCA variances were higher in magnitude than SCA variances for all the characters studied indicating the predominance of the additive gene effects in their inheritance. The parent P2 (BG 009) appeared as the best general combiner for earliness; P1 (BG 006) for number of fruits, average single fruit weight and fruit yield; P4 (BG 027) for node number of first female flower and days to seed fruit maturity; P3 (BG 011) for fruit length and thickness of the fruit flesh; P5 (BG 033) for 100-seed weight; and P6 for number of nodes per main vine. The SCA effect as well as reciprocal effect was also significant for most of the important characters in different crosses.
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- 2022
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112. Prostate tumors of native men from West Africa show biologically distinct pathways-A comparative genomic study.
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Yamoah K, Asamoah FA, Abrahams AOD, Awasthi S, Mensah JE, Dhillon J, Mahal BA, Gueye SM, Jalloh M, Farahani SJ, Lal P, Rebbeck TR, and Yarney J
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- Biological Specimen Banks, Black People, Gene Expression Profiling methods, Gene Expression Profiling statistics & numerical data, Genetic Testing methods, Genomics, Ghana epidemiology, Humans, Immunohistochemistry, Male, Middle Aged, Senegal epidemiology, Signal Transduction genetics, United States ethnology, White People, Black or African American, Carcinoma ethnology, Carcinoma genetics, Carcinoma pathology, Ether-A-Go-Go Potassium Channels genetics, Prostatic Neoplasms ethnology, Prostatic Neoplasms genetics, Prostatic Neoplasms pathology, Serine Endopeptidases genetics
- Abstract
Background: Native African men (NAM) experience a disproportionate burden of prostate cancer (PCa) and have higher mortality rates compared to European American men (EAM). While socioeconomic status has been implicated as a driver of this disparity, little is known about the genomic mechanisms and distinct biological pathways that are associated with PCa of native men of African origin., Methods: To understand biological factors that contribute to this disparity we utilized a total of 406 multi-institutional localized PCa samples, collected by Men of African Descent and Carcinoma of the Prostate biospecimen network and Moffitt Cancer Center/University of Pennsylvania Health science system. We performed comparative genomics and immunohistochemistry to identify the biomarkers that are highly enriched in NAM from west Africa and compared them with African American Men (AAM) and EAM. Quantified messenger RNA expression and Median H scores based on immune reactivity of staining cells, were compared using Mann Whitney test. For gene expression analysis, p values were further adjusted for multiple comparisons using false discovery rates., Results: Immunohistochemical analysis on selected biomarkers showed a consistent association between ETS related gene (ERG) status and race with 83% of NAM exhibiting tumors that lacked TMPRSS2-ERG translocation (ERG
negative ) as compared to AAM (71%) and EAM (52%). A higher proportion of NAM (29%) were also found to be double negative (ERGnegative and PTENLoss ) as compared to AAM (6%) and EAM (7%). NAM tumors had significantly higher immunoreactivity (H-score) for PSMA, and EZH2, whereas they have lower H-score for PTEN, MYC, AR, RB and Racemase, (all p < .05). Comparative genomics revealed that NAM had significant transcriptomic variability in AR-activity score. In pathways enrichment analysis NAM tumors exhibited the enrichment of proinflammatory pathways including cytokine, interleukins, inflammatory response, and nuclear factor kappa B signaling., Conclusions: Prostate tumors in NAM are genomically distinct and are characterized by the dysregulation of several biomarkers. Furthermore, these tumors are also highly enriched for the major proinflammatory pathways. These distinct biological features may have implications for diagnosis and response to targeted therapy among Black men, globally., (© 2021 Wiley Periodicals LLC.)- Published
- 2021
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113. Secondary analysis of malaria rapid diagnostic tests from rounds 5-8 of WHO product testing with a focus on false-negative results.
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Xu B, Tu B, Chu F, Jalloh M, Mu JS, Zheng JJ, and Chen WW
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- Antigens, Protozoan genetics, Diagnostic Tests, Routine methods, Humans, World Health Organization, Malaria diagnosis, Malaria, Falciparum diagnosis, Malaria, Falciparum parasitology
- Abstract
Despite the widespread use of malaria rapid diagnostic test (RDT) in clinical practice, there are a lot of challenges. We conducted a secondary analysis of 129 malaria RDT data from rounds 5-8 of the World Health Organization (WHO) product testing summary and discuss the causes of false-negative (FN) results with a focus on low parasite density, improper RDT storage, operation and interpretation, and plasmodium falciparum with a pfhrp2/3 gene deletion. The results demonstrated that the malaria RDTs currently commercially available might cause FN results in practice., (© 2021. The Author(s).)
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- 2021
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114. Pursuing health systems strengthening through disease-specific programme grants: experiences in Tanzania and Sierra Leone.
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Hemingway CD, Bella Jalloh M, Silumbe R, Wurie H, Mtumbuka E, Nhiga S, Lusasi A, and Pulford J
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- Humans, Qualitative Research, Sierra Leone, Tanzania, Government Programs, Malaria prevention & control
- Abstract
Introduction: Disease-specific 'vertical' programmes and health system strengthening (HSS) 'horizontal' programmes are not mutually exclusive; programmes may be implemented with the dual objectives of achieving both disease-specific and broader HSS outcomes. However, there remains an ongoing need for research into how dual objective programmes are operationalised for optimum results., Methods: A qualitative study encompassing four grantee programmes from two partner countries, Tanzania and Sierra Leone, in the Comic Relief and GlaxoSmithKline 'Fighting Malaria, Improving Health' partnership. Purposive sampling maximised variation in terms of geographical location, programme aims and activities, grantee type and operational sector. Data were collected via semi-structured interviews. Data analysis was informed by a general inductive approach., Results: 51 interviews were conducted across the four grantees. Grantee organisations structured and operated their respective projects in a manner generally supportive of HSS objectives. This was revealed through commonalities identified across the four grantee organisations in terms of their respective approach to achieving their HSS objectives, and experienced tensions in pursuit of these objectives. Commonalities included: (1) using short-term funding for long-term initiatives; (2) benefits of being embedded in the local health system; (3) donor flexibility to enable grantee responsiveness; (4) the need for modest expectations; and (5) the importance of micro-innovation., Conclusion: Health systems strengthening may be pursued through disease-specific programme grants; however, the respective practice of both the funder and grantee organisation appears to be a key influence on whether HSS will be realised as well as the overall extent of HSS possible., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2021
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115. A case of pyelo-ureteral junction bilharzioma.
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Gaye O, Jalloh M, Thiam NM, Dansokho K, Niang L, and Gueye SM
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Bilharziomas are inflammatory tumour-like masses which often pose the problem of differential diagnosis with neoplastic processes. Its location at the pyelo-ureteral junction is very uncommon. The pre-operative diagnosis of bilharzia of the pyelo-ureteral junction is difficult. Indeed, the diagnosis is most often made on anatomo-pathological examination of the surgical specimen, which rarely allows for conservative treatment. We report one case of pyeloureteral junction bilharzioma in children living in bilharzia endemic areas and discuss the diagnostic and therapeutic issues of these cases., (© 2021 Published by Elsevier Inc.)
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- 2021
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116. Epidemiological and Diagnostic Aspects of Bladder Bilharziomas in the Urology Department of Idrissa Pouye General Hospital (HOGIP).
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Gaye O, Jalloh M, Thiam NM, Ndoye M, Dansokho K, Bellamine Y, Kouka SCN, Dial C, Mbodji MM, Cassell A, Labou I, Niang L, and Gueye S
- Abstract
Objective: The aim of our study is to assess the diagnostic aspects of bladder bilharzioma in the Urology Department of Idrissa Pouye General Hospital (Senegal)., Materials and Methods: It is a descriptive study from January 2013 to December 2018. The patients included in the study were those who had anatomopathological examination of bladder biopsy that showed a schistosomiasis pseudotumor of the bladder. The variables studied were sociodemographic, clinical symptoms, imaging findings, histology, and treatment. The data have been saved and analyzed by the 2013 Excel software., Results: Thirteen patients were included in our study. The average age was 27 ± 12.1 years. Sex ratio was 1.6. The majority of the patients were from the northern part of Senegal. Hematuria was the main symptom for all the patients. Cystoscopy was performed for all the patients and showed 5 granulomas and 8 fibrocalcic polyps. A transurethral resection of the bladder was performed, and treatment with praziquantel (40 mg/kg of bodyweight) has been carried out. One patient presented precancerous lesions such as metaplasia and dysplasia of the bladder mucosa. After a median follow-up of 40 months (6-57 months), ten patients had a favorable clinical and endoscopic outcome., Conclusion: Granulomas and fibrocalcic polyps of the bladder mucosa are, respectively, confused with squamous cell carcinoma and bladder lithiasis in endemic areas of schistosomiasis. Good cystoscopy interpretation can provide the diagnosis of bladder bilharzioma and start the treatment., Competing Interests: The authors declare that they have no conflicts of interest., (Copyright © 2021 Oumar Gaye et al.)
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- 2021
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117. Assessment of Oil Palm Pollinating Weevil ( Elaeidobius kamerunicus ) Population Density in Biparental dura × pisifera Hybrids on Deep Peat-Soil in Perak State, Malaysia.
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Swaray S, Y Rafii M, Din Amiruddin M, Firdaus Ismail M, Jamian S, Jalloh M, Oladosu Y, Mustakim Mohamad M, Marjuni M, Kolapo OK, and Chukwu SC
- Abstract
This study was conducted to assess the Elaeidobius kamerunicus (EK) population density among the biparental dura × pisifera hybrids' palms on deep peat-soil. Twenty-four hybrids derived from 10 genetic sources were used. Variance analysis showed that the EK population density varies between different oil palm hybrids, with a more noticeable variation of a low population mean in the male weevil across the hybrids. The highest weevil population mean/spikelet was attained on the third day of anthesis. The maximum monthly population of EK/spikelet (12.81 ± 0.23) and population density of EK (1846.49 ± 60.69) were recorded in January. Accordingly, 41.67% of the hybrids recorded an EK population density greater than the trial means of 973.68 weevils. Hybrid ECPHP550 had the highest mean of EK/spikelet (10.25 ± 0.11) and the highest population density of EK/palm (1241.39 ± 73.74). The parental mean population was 963.24 weevils and parent Deli-Banting × AVROS recorded the highest EK population density (1173.01). The overall results showed a notable disparity in the EK population among the biparental hybrids. Parental Deli-Banting × AVROS and hybrid ECPHP550 could be more useful to optimize the weevil population for pollination improvements in palm plantations. However, we suggest that volatile production should be included as a desirable trait in oil palm selective breeding.
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- 2021
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118. What factors shape surgical access in West Africa? A qualitative study exploring patient and provider experiences of managing injuries in Sierra Leone.
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Virk A, Bella Jalloh M, Koedoyoma S, Smalle IO, Bolton W, Scott JA, Brown J, Jayne D, Ensor T, and King R
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- Africa, Western, Focus Groups, Humans, Qualitative Research, Sierra Leone, Hemorrhagic Fever, Ebola
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Introduction: Surgical access is central to universalising health coverage, yet 5 billion people lack timely access to safe surgical services. Surgical need is particularly acute in post conflict settings like Sierra Leone. There is limited understanding of the barriers and opportunities at the service delivery and community levels. Focusing on fractures and wound care which constitute an enormous disease burden in Sierra Leone as a proxy for general surgical need, we examine provider and patient perceived factors impeding or facilitating surgical care in the post-Ebola context of a weakened health system., Methods: Across Western Area Urban (Freetown), Bo and Tonkolili districts, 60 participants were involved in 38 semistructured interviews and 22 participants in 5 focus group discussions. Respondents included surgical providers, district-level policy-makers, traditional healers and patients. Data were thematically analysed, combining deductive and inductive techniques to generate codes., Results: Interacting demand-side and supply-side issues affected user access to surgical services. On the demand side, high cost of care at medical facilities combined with the affordability and convenient mode of payment to the traditional health practitioners hindered access to the medical facilities. On the supply side, capacity shortages and staff motivation were challenges at facilities. Problems were compounded by patients' delaying care mainly spurred by sociocultural beliefs in traditional practice and economic factors, thereby impeding early intervention for patients with surgical need. In the absence of formal support services, the onus of first aid and frontline trauma care is borne by lay citizens., Conclusion: Within a resource-constrained context, supply-side strengthening need accompanying by demand-side measures involving community and traditional actors. On the supply side, non-specialists could be effectively utilised in surgical delivery. Existing human resource capacity can be enhanced through better incentives for non-physicians. Traditional provider networks can be deployed for community outreach. Developing a lay responder system for first-aid and front-line support could be a useful mechanism for prompt clinical intervention., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY. Published by BMJ.)
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- 2021
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119. The role of international partnerships in improving urethral reconstruction in low- and middle-income countries.
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Haider M, Jalloh M, Yin J, Diallo A, Puttkammer N, Gueye S, Niang L, Wessells H, and McCammon K
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- Adult, Aged, Aged, 80 and over, Developing Countries, Humans, Income, International Cooperation, Male, Middle Aged, Retrospective Studies, Senegal, Treatment Outcome, Urologic Surgical Procedures, Male, Young Adult, Urethra surgery, Urethral Stricture surgery
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Purpose: To explore the impact of education and training in international surgical partnerships on outcomes of urethral stricture disease in low- and middle-income countries. To encourage data collection and outcomes assessments to promote evidence-based and safe surgical care., Methods: Qualitative data were collected through observation of a reconstructive surgical workshop held by IVUmed at a host site in Dakar, Senegal. Quantitative data were collected through a retrospective review of 11 years of hospital data to assess surgical outcomes of urethral stricture disease before and after IVUmed started reconstructive workshops at the site., Results: In the 11-year study period, 569 patients underwent 774 surgical procedures for urethral strictures. The numbers and types of urethroplasty techniques increased after IVUmed started its workshops. The average number of urethroplasties increased from 10 to 18.75/year. There was a statistically significant improvement in the mean success rate of urethroplasties from 12.7% before to 29% after the workshops. Anastomotic urethroplasty success rates doubled from 16.7 to 35.1%, but this was not statistically significant (p = 0.07). The improved success rate was sustained in cases performed without an IVUmed provider., Conclusions: Urethral stricture disease treatment in low- and middle-income countries is fraught with challenges due to complex presentations and limited subspecialty training. Improper preoperative management, lack of specialty instruments, and suboptimal wound care all contribute to poor outcomes. International surgical groups like IVUmed who employ the "teach-the-teacher" model enhance local practitioner expertise and independence leading to long-term improvements in patient outcomes. Tailoring practice guidelines to the local resource framework and encouraging data collection and outcomes assessment are vital components of providing responsible care and should be encouraged.
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- 2020
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120. Challenges facing the urologist in low- and middle-income countries.
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Metzler I, Bayne D, Chang H, Jalloh M, and Sharlip I
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- Adult, Female, Health Care Surveys, Humans, Internationality, Male, Middle Aged, Developing Countries, Income, Poverty, Urology
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Purpose: The challenges in providing urologic care across borders and in resource-constrained settings are poorly understood. We sought to better characterize the impediments to the delivery of urological care in low- and middle-income countries (LMICs) compared to high-income countries (HICs)., Methods: A 70 question online survey in RedCap™ was distributed to urologists who had practiced in countries outside of the United States and Europe categorized by World Bank income groups., Results: 114 urologists from 27 countries completed the survey; 35 (39%) practiced in HICs while 54 (61%) practiced in LMICs. Forty-three percent of urologists received training outside their home country. Most commonly treated conditions were urolithiasis (30%), BPH (15%) and prostate cancer (13%) which did not vary by group. Only 19% of urologists in LMICs reported sufficient urologists in their country. Patients in LMICs were less likely to get urgent drainage for infected obstructing kidney stones or endoscopic treatment for a painful kidney stone or obstructing prostate. Urologists visiting LMICs were more likely to cite deficits in knowledge, inadequate operative facilities and limited access to disposables as the major challenges whereas local LMIC urologists were more likely to cite financial challenges, limited access to diagnostics and support staff as the barriers to care., Conclusions: LMICs lack enough training opportunities and urologists to care for their population. There is disconnect between the needs identified by local and visiting urologists. International collaborations should target broader interventions in LMICs to address local priorities such as diagnostic studies, support staff and financial support.
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- 2020
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121. Barriers to maternal health services during the Ebola outbreak in three West African countries: a literature review.
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Yerger P, Jalloh M, Coltart CEM, and King C
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- Africa, Western epidemiology, Disease Outbreaks prevention & control, Female, Guinea, Humans, Pregnancy, Sierra Leone epidemiology, Hemorrhagic Fever, Ebola epidemiology, Hemorrhagic Fever, Ebola prevention & control, Maternal Health Services
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Introduction: The Ebola virus disease (EVD) outbreak in West Africa, affecting Guinea, Liberia and Sierra Leone from 2014 to 2016, was a substantial public health crisis with health impacts extending past EVD itself. Access to maternal health services (MHS) was disrupted during the epidemic, with reductions in antenatal care, facility-based deliveries and postnatal care. We aimed to identify and describe barriers related to the uptake and provision of MHS during the 2014-2016 EVD outbreak in West Africa., Methods: In June 2020, we conducted a scoping review of peer-reviewed publications and grey literature from relevant stakeholder organisations. Search terms were generated to identify literature that explained underlying access barriers to MHS. Published literature in scientific journals was first searched and extracted from PubMed and Web of Science databases for the period between 1 January 2014 and 27 June 2020. We hand-searched relevant stakeholder websites. A 'snowball' approach was used to identify relevant sources uncaptured in the systematic search. The identified literature was examined to synthesise themes using an existing framework., Results: Nineteen papers were included, with 26 barriers to MHS uptake and provision identified. Three themes emerged: (1) fear and mistrust, (2) health system and service constraints, and (3) poor communication. Our analysis of the literature indicates that fear, experienced by both service users and providers, was the most recurring barrier to MHS. Constrained health systems negatively impacted MHS on the supply side. Poor communication and inadequately coordinated training efforts disallowed competent provision of MHS., Conclusions: Barriers to accessing MHS during the EVD outbreak in West Africa were influenced by complex but inter-related factors at the individual, interpersonal, health system and international level. Future responses to EVD outbreaks need to address underlying reasons for fear and mistrust between patients and providers, and ensure MHS are adequately equipped both routinely and during crises., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2020
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122. Expressions of psychological distress in Sierra Leone: implications for community-based prevention and response.
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Horn R, Sesay SS, Jalloh M, Bayoh A, Lavally JB, and Ager A
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Background: Over recent decades there has been considerable mental health research in Sierra Leone but little on local conceptualisations of mental health conditions. Understanding these is crucial both for identifying the experienced needs of the population and utilising relevant community-based resources to address them. This study took a grounded approach to identify the ways in which adults in Sierra Leone express psychological distress., Methods: Rapid ethnographic methods deployed included 75 case study interviews with community members, 12 key informant (KI) pile sorts and 55 KI interviews. Thematic analysis of data was supported by frequency analysis and multi-dimensional scaling., Results: Thirty signs of distress were identified. The only consistent 'syndrome' identified with respect to these was a general concept of crase , which referred to psychosis-related presentation but also a wide range of other signs of distress. We did not find consensus on locally defined concepts for mild-moderate forms of mental disorder: people use multiple overlapping signs and terms indicating psychological distress., Conclusions: Analysis supports calls to view mental health problems as a 'continuum of distress' rather than as discrete categories. This framing is coherent with opportunities for prevention and response in Sierra Leone which do not focus primarily on formal healthcare service providers but rather involve a range of community-based actors. It also enables attention to be paid to the identification of milder signs of distress with a view to early response and prevention of more severe mental health problems., Competing Interests: None., (© The Author(s) 2020.)
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- 2020
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123. A Custom Genotyping Array Reveals Population-Level Heterogeneity for the Genetic Risks of Prostate Cancer and Other Cancers in Africa.
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Harlemon M, Ajayi O, Kachambwa P, Kim MS, Simonti CN, Quiver MH, Petersen DC, Mittal A, Fernandez PW, Hsing AW, Baichoo S, Agalliu I, Jalloh M, Gueye SM, Snyper NYF, Adusei B, Mensah JE, Abrahams AOD, Adebiyi AO, Orunmuyi AT, Aisuodionoe-Shadrach OI, Nwegbu MM, Joffe M, Chen WC, Irusen H, Neugut AI, Quintana Y, Seutloali M, Fadipe MB, Warren C, Woehrmann MH, Zhang P, Ongaco CM, Mawhinney M, McBride J, Andrews CV, Adams M, Pugh E, Rebbeck TR, Petersen LN, and Lachance J
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- Case-Control Studies, Cohort Studies, Genetic Loci, Genetics, Population, Genome-Wide Association Study, Humans, Male, Neoplasms classification, Prostatic Neoplasms classification, Risk Factors, South Africa epidemiology, Black People genetics, Genetic Predisposition to Disease, Neoplasms epidemiology, Neoplasms genetics, Polymorphism, Single Nucleotide, Prostatic Neoplasms epidemiology, Prostatic Neoplasms genetics
- Abstract
Although prostate cancer is the leading cause of cancer mortality for African men, the vast majority of known disease associations have been detected in European study cohorts. Furthermore, most genome-wide association studies have used genotyping arrays that are hindered by SNP ascertainment bias. To overcome these disparities in genomic medicine, the Men of African Descent and Carcinoma of the Prostate (MADCaP) Network has developed a genotyping array that is optimized for African populations. The MADCaP Array contains more than 1.5 million markers and an imputation backbone that successfully tags over 94% of common genetic variants in African populations. This array also has a high density of markers in genomic regions associated with cancer susceptibility, including 8q24. We assessed the effectiveness of the MADCaP Array by genotyping 399 prostate cancer cases and 403 controls from seven urban study sites in sub-Saharan Africa. Samples from Ghana and Nigeria clustered together, whereas samples from Senegal and South Africa yielded distinct ancestry clusters. Using the MADCaP array, we identified cancer-associated loci that have large allele frequency differences across African populations. Polygenic risk scores for prostate cancer were higher in Nigeria than in Senegal. In summary, individual and population-level differences in prostate cancer risk were revealed using a novel genotyping array. SIGNIFICANCE: This study presents an Africa-specific genotyping array, which enables investigators to identify novel disease associations and to fine-map genetic loci that are associated with prostate and other cancers., (©2020 American Association for Cancer Research.)
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- 2020
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124. Is Schistosomiasis a Risk Factor for Bladder Cancer? Evidence-Based Facts.
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Jalloh M, Cassell A, Diallo T, Gaye O, Ndoye M, Mbodji MM, Mahamat MA, Diallo A, Dial C, Labou I, Niang L, and Gueye SM
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Background . Globally, approximately 20% of malignancy are caused by infection. Schistosoma infection is a major cause of bladder in most part of Africa. In 2018 alone, there were approximately 549,393 new cases and 199,922 deaths from bladder cancer. The presence of Schistosoma ova in the venous plexus of the bladder induces a cascade of inflammation causing significant tissue damage and granulomatous changes. Methodology . A literature review was conducted from 1995 to 2019 using PubMed, Google Scholar, African Journal Online, and Google databases. Relevant data on the association of "Schistosomiasis and Bladder cancer" in sub-Saharan Africa (SSA) were retrieved. Evidence Synthesis . Results from research using animal models to establish the carcinogenesis of Schistosoma and bladder cancer have been helpful but inconclusive. Immunoregulatory cytokines and genetic marker have been identified to play a role in the pathogenesis. In some parts of sub-Saharan Africa, there has been close association of squamous cell carcinoma and histological evidence of Schistosoma ova. Conclusion . There are some data to support the association between schistosomiasis and bladder cancer in sub-Saharan Africa. However, these have been limited by their design and may not sufficiently establish carcinogenesis. There is a need for more genomic and molecular research to better characterize S. haematobium and its effects on the bladder. Such goal will contribute immensely to Schistosoma bladder cancer prevention and control., Competing Interests: The authors declare that they have no conflicts of interest regarding this article., (Copyright © 2020 Mohamed Jalloh et al.)
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- 2020
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125. Esketamine (Spravato) for Treatment-Resistant Depression.
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Jalloh M
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- Antidepressive Agents therapeutic use, Humans, Treatment Outcome, Depressive Disorder, Treatment-Resistant drug therapy, Ketamine therapeutic use
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- 2020
126. Management of Advanced and Metastatic Prostate Cancer: A Need for a Sub-Saharan Guideline.
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Cassell A, Yunusa B, Jalloh M, Ndoye M, Mbodji MM, Diallo A, Kouka SC, Labou I, Niang L, and Gueye SM
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The estimated incidence rate of prostate cancer in Africa was 22.0/100,000 in 2016. The International Agency for Research on Cancer (IARC) has cited prostate cancer as a growing health threat in Africa with approximated 28,006 deaths in 2010 and estimated 57,048 deaths in 2030. The exact incidence of advanced and metastatic prostate cancer is not known in sub-Saharan Africa. Hospital-based reports from the region have shown a rising trend with most patients presenting with advanced or metastatic disease. The management of advanced and metastatic prostate cancer is challenging. The available international guidelines may not be cost-effective for an African population. The most efficient approach in the region has been surgical castration by bilateral orchidectomy or pulpectomy. Medical androgen deprivation therapy is expensive and may not be available. Patients with metastatic castrate-resistant prostate cancer tend to be palliated due to the absence or cost of chemotherapy or second-line androgen deprivation therapy in most of Africa. A cost-effective guideline for developing nations to address the rising burden of advanced prostate cancer is warranted at this moment., Competing Interests: The authors declare no conflicts of interest regarding this article., (Copyright © 2019 Ayun Cassell et al.)
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- 2019
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127. Management of Renal Cell Carcinoma-Current Practice in Sub-Saharan Africa.
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Cassell A, Jalloh M, Yunusa B, Ndoye M, Mbodji MM, Diallo A, Kouka SC, Labou I, Niang L, and Gueye SM
- Abstract
There is a global variation in the incidence of renal masses with the developed nations having a greater incidence. About 80-90% of renal malignancies are renal cell carcinomas (RCC) which account for 2-4% of all cancers. In Africa and the Middle East, the age-standardized incidence for RCC is 1.8-4.8/100,000 for males and 1.2-2.2/100,000 for females. The management of renal cell cancer is challenging. A multidisciplinary approach is effective for diagnosis, staging, and treatment. Guidelines recommend active surveillance, thermal ablation, partial nephrectomy, radical nephrectomy, cytoreductive nephrectomy and immunotherapy as various modalities for various stages of RCC. However, open radical nephrectomy is most widely adopted as an option for treatment at various stages of the disease in sub-Saharan Africa due to its cost-effectiveness, applicability at various stages, and the reduced cost of follow-up. Nevertheless, most patients in the region present with the disease in the advanced stage and despite surgery the prognosis is poor., Competing Interests: The authors declare no conflict of interest regarding this article., (© Cassell A et al.)
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- 2019
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128. A Review of Localized Prostate Cancer: An African Perspective.
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Cassell A, Yunusa B, Jalloh M, Mbodji MM, Diallo A, Ndoye M, Kouka SC, Labou I, Niang L, and Gueye SM
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Prostate cancer is the second most common malignancy in males and the sixth leading cause of cancer mortality in men with a relatively higher death rate in men of African descent. In the United States and other parts of Europe, more than 80% of diagnosed prostate cancer is localized, and 80-90% of these men receive some form of treatment. The projected data may not be a direct reflection of the disease in the sub-Saharan region as less than 40% presents with localized disease. Results from prostate cancer screening have shown that most African men in the sub-region have little knowledge of the disease. There are recommended international guidelines for the management of localized prostate cancer, however, a guideline in a local context could be ideal., Competing Interests: The authors declare no conflict of interest regarding this article., (Copyright 2019, Cassell et al.)
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- 2019
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129. 180° congenital penile torsion with distal hypospadias mistaken for an epispadias: Optimal outcome with tubularized incised plate urethroplasty and dartos flap rotation.
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Cassell A, Jalloh M, Mbodji MM, Ndoye M, Labou I, Niang L, Diallo Y, Diallo A, and Gueye SM
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Introduction: Severe penile torsion of 180° associated with hypospadias is a rare entity. Knowledge of penile anatomy and pathology are necessary as the diagnosis could be missed., Case Presentation: We report a case of severe 180° penile torsion with distal hypospadias that was mistaken for an epispadias which was corrected with surgery., Conclusion: Tubularized incised plate urethroplasty and dartos flap rotation provided satisfactory result for this association., Competing Interests: The authors declare no conflict of interest., (© 2019 The Authors. IJU Case Reports published by John Wiley & Sons Australia, Ltd on behalf of the Japanese Urological Association.)
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- 2019
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130. Non-Muscle Invasive Bladder Cancer: A Review of the Current Trend in Africa.
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Cassell A, Yunusa B, Jalloh M, Mbodji MM, Diallo A, Ndoye M, Diallo Y, Labou I, Niang L, and Gueye SM
- Abstract
Bladder cancer is the fourth most common cancer in men and the 11th most common cancer in woman accounting for 6.6% of all cancer cases. Approximately 70-75% bladder cancers are non-muscle invasive bladder cancer (NMIBC). A few African studies have provided considerable rates of NMIBC as compared to western settings 70% to 85%. Critical step in the management of NMIBC is to prevent tumor recurrence which include transurethral resection of the bladder tumor (TURBT) for staging and histological diagnosis. A second TURBT for high grade tumor, T1 tumors and intravesical adjuvant chemotherapy and immunotherapy are essential to reduce recurrence rate. Nevertheless, variant histology, multiple, progressive and recurrent high-grade tumors are best treated with early radical cystectomy. The African literature is scanty on the management of NMIBC. Most of the histological types are squamous cell bladder cancer and may not conform to transurethral resection only but rather radical cystectomy. Most of these patients are not suitable for any form of treatment as they present with advanced disease. However, there is an increasing incidence of urothelial cancer in Africa over the years due to urbanization. It is best that major investment is made in uro-oncological care to address the growing challenge of these subtypes., Competing Interests: None.
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- 2019
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131. 'Feminization' of physician workforce in Bangladesh, underlying factors and implications for health system: Insights from a mixed-methods study.
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Hossain P, Das Gupta R, YarZar P, Salieu Jalloh M, Tasnim N, Afrin A, Naher N, Hossain MT, Joarder T, and Ahmed SM
- Subjects
- Bangladesh, Career Choice, Cross-Sectional Studies, Female, Gynecology education, Health Workforce statistics & numerical data, Humans, Male, Motivation, Obstetrics education, Pediatricians statistics & numerical data, Pediatricians supply & distribution, Physicians, Women psychology, Physicians, Women statistics & numerical data, Rural Health Services, Sexism, Students, Medical psychology, Students, Medical statistics & numerical data, Surveys and Questionnaires, Young Adult, Physicians, Women supply & distribution
- Abstract
Background: Bangladesh is currently faced with an emerging scenario of increased number of female physicians in the health workforce which has health system implications. For a health system to attract and retain female physicians, information is needed regarding their motivation to choose medical profession, real-life challenges encountered in home and workplaces, propensity to choose a few particular specialties, and factors leading to drop-out from the system. This exploratory mixed-methods study attempted to fill-in this knowledge gap and help the policy makers in designing a gender-sensitive health system., Methods: Three-hundred and fifteen final year female medical students from four purposively selected medical colleges of Dhaka city (two each from public and private colleges) were included in a quantitative survey using self-administered questionnaire. Besides, 31 in-depth interviews with female students, their parents, and in-service trainee physicians, and two focus group discussions with female students were conducted. Gender disaggregated data of physicians and admitted students were also collected. Data were analysed using Stata version 13 and thematic analysis method, as appropriate., Results: During 2006-2015, the female physicians outnumbered their male peers (52% vs. 48%), which is also supported by student admission data during 2011-2016 from the sampled medical colleges, (67% in private compared to 52% in public). Majority of the female medical graduates specialized in Obstetrics and Gynaecology (96%). Social status (66%), respect for medical profession (91%), image of a 'noble profession' (91%), and prospects of helping common people (94%) were common motivating factors for them. Gender disparity in work, career and work environment especially in rural areas, and problems of work-home balance, were a few of the challenges mentioned which forced some of them to drop-out. Also, this scenario conditioned them to crowd into a few selected specialties, thereby constraining health system from delivering needed services., Conclusions: Increasing number of female physicians in health workforce, outnumbering their male peers, is a fact of life for health system of Bangladesh. It's high time that policy makers pay attention to this and take appropriate remedial measures so that women can pursue their career in an enabling environment and serve the needs and priorities of the health system., Competing Interests: PYZ was a student investigator at the time of research and currently working for a commercial company named University Research Co., LLC, Myanmar. This does not alter our adherence to PLOS ONE policies on sharing data and materials.
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- 2019
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132. Effective Project Management of a Pan-African Cancer Research Network: Men of African Descent and Carcinoma of the Prostate (MADCaP).
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Odiaka E, Lounsbury DW, Jalloh M, Adusei B, Diallo TA, Kane PMS, Rockson I, Okyne V, Irusen H, Pentz A, Makinde I, Ajibola OH, Petersen L, McBride J, Petersen DC, Mante S, Agalliu I, Adebiyi AO, Popoola O, Yeboah E, Mensah JE, Hsing A, Fernandez P, Aisuodionoe-Shadrach O, Joffe M, Singh E, Gueye SM, Quintana Y, Fortier B, Rebbeck TR, and Andrews C
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- Black People, Carcinoma pathology, Developing Countries, Humans, Income, Male, Prostate pathology, Prostatic Neoplasms pathology, South Africa epidemiology, Carcinoma epidemiology, Prostatic Neoplasms epidemiology
- Abstract
Purpose: Health research in low- and middle-income countries can generate novel scientific knowledge and improve clinical care, fostering population health improvements to prevent premature death. Project management is a critical part of the success of this research, applying knowledge, skills, tools, and techniques to accomplish required goals. Here, we describe the development and implementation of tools to support a multifaceted study of prostate cancer in Africa, focusing on building strategic and operational capacity., Methods: Applying a learning organizational framework, we developed and implemented a project management toolkit (PMT) that includes a management process flowchart, a cyclical center-specific schedule of activities, periodic reporting and communication, and center-specific monitoring and evaluation metrics., Results: The PMT was successfully deployed during year one of the project with effective component implementation occurring through periodic cycles of dissemination and feedback to local center project managers. A specific evaluation was conducted 1 year after study initiation to obtain enrollment data, evaluate individual quality control management plans, and undertake risk log assessments and follow-up. Pilot data obtained identified areas in which centers required mentoring, strengthening, and capacity development. Strategies were implemented to improve project goals and operational capacity through local problem solving, conducting quality control checks and following compliancy with study aims. Moving forward, centers will perform quarterly evaluations and initiate strengthening measures as required., Conclusion: The PMT has fostered the development of both strategic and operational capacity across project centers. Investment in project management resources is essential to ensuring high-quality, impactful health research in low- and middle-income countries.
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- 2018
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133. Development, Evaluation, and Implementation of a Pan-African Cancer Research Network: Men of African Descent and Carcinoma of the Prostate.
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Andrews C, Fortier B, Hayward A, Lederman R, Petersen L, McBride J, Petersen DC, Ajayi O, Kachambwa P, Seutloali M, Shoko A, Mokhosi M, Hiller R, Adams M, Ongaco C, Pugh E, Romm J, Shelford T, Chinegwundoh F, Adusei B, Mante S, Snyper NY, Agalliu I, Lounsbury DW, Rohan T, Orfanos A, Quintana Y, Jacobson JS, Neugut AI, Gelmann E, Lachance J, Dial C, Diallo TA, Jalloh M, Gueye SM, Kane PMS, Diop H, Ndiaye AJ, Sall AS, Toure-Kane NC, Onyemata E, Abimiku A, Adjei AA, Biritwum R, Gyasi R, Kyei M, Mensah JE, Okine J, Okyne V, Rockson I, Tay E, Tettey Y, Yeboah E, Chen WC, Singh E, Cook MB, Duffy CN, Hsing A, Soo CC, Fernandez P, Irusen H, Aisuodionoe-Shadrach O, Jamda AM, Olabode PO, Nwegbu MM, Ajibola OH, Ajamu OJ, Ambuwa YG, Adebiyi AO, Asuzu M, Ogunbiyi O, Popoola O, Shittu O, Amodu O, Odiaka E, Makinde I, Joffe M, Pentz A, and Rebbeck TR
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- Baltimore, Black People, Carcinoma pathology, Genomics, Genotype, Humans, Male, Prostate pathology, Prostatic Neoplasms pathology, South Africa epidemiology, Black or African American, Carcinoma epidemiology, Carcinoma genetics, Prostatic Neoplasms epidemiology, Prostatic Neoplasms genetics
- Abstract
Purpose: Cancer of the prostate (CaP) is the leading cancer among men in sub-Saharan Africa (SSA). A substantial proportion of these men with CaP are diagnosed at late (usually incurable) stages, yet little is known about the etiology of CaP in SSA., Methods: We established the Men of African Descent and Carcinoma of the Prostate Network, which includes seven SSA centers partnering with five US centers to study the genetics and epidemiology of CaP in SSA. We developed common data elements and instruments, regulatory infrastructure, and biosample collection, processing, and shipping protocols. We tested this infrastructure by collecting epidemiologic, medical record, and genomic data from a total of 311 patients with CaP and 218 matched controls recruited at the seven SSA centers. We extracted genomic DNA from whole blood, buffy coat, or buccal swabs from 265 participants and shipped it to the Center for Inherited Disease Research (Baltimore, MD) and the Centre for Proteomics and Genomics Research (Cape Town, South Africa), where genotypes were generated using the UK Biobank Axiom Array., Results: We used common instruments for data collection and entered data into the shared database. Double-entered data from pilot participants showed a 95% to 98% concordance rate, suggesting that data can be collected, entered, and stored with a high degree of accuracy. Genotypes were obtained from 95% of tested DNA samples (100% from blood-derived DNA samples) with high concordance across laboratories., Conclusion: We provide approaches that can produce high-quality epidemiologic and genomic data in multicenter studies of cancer in SSA.
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- 2018
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134. Patterns of Local Failure following Radiation Therapy for Prostate Cancer.
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Jalloh M, Leapman MS, Cowan JE, Shinohara K, Greene KL, Roach M 3rd, Chang AJ, Chan JM, Simko JP, and Carroll PR
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- Humans, Male, Middle Aged, Retrospective Studies, Treatment Failure, Neoplasm Recurrence, Local epidemiology, Prostatic Neoplasms epidemiology, Prostatic Neoplasms radiotherapy
- Abstract
Purpose: Little is known about patterns of local failure following radiation therapy for prostate cancer. We aimed to characterize post-radiation biopsy findings, including the treatment effect and the zonal distribution of recurrent disease after radiation therapy, in men experiencing biochemical recurrence., Materials and Methods: We identified patients who received post-radiation biopsy in the setting of biochemical recurrence following primary radiation for localized disease. Histological post-radiation biopsy results were categorized by the absence of tumor, demonstration of radiation treatment effect, failure (recurrent cancer) or a combination of treatment effect and failure. We described patterns of histological failure and compared them to the diagnostic biopsy findings., Results: A total of 284 men underwent mapped post-radiation biopsy for biochemical recurrence. Mean age at initial diagnosis was 63 years and median prostate specific antigen was 8.2 ng/ml. Of the men 33%, 32% and 35% were classified at low, intermediate and high risk based on clinical CAPRA (Cancer of the Prostate Risk Assessment) categories. Median time to post-radiation biopsy was 61 months after treatment. Findings were negative in 4% of cases while we noted a treatment effect in 31%, failure in 45% and a combination in 20%. Failure rates were similar across sextants. Of 140 patients with mapped pretreatment and posttreatment biopsies 4% demonstrated cancer in a new location previously identified as negative. Gleason upgrading occurred in 43% of cases with 85% upgraded to 4 + 3 or higher., Conclusions: Men with rising prostate specific antigen after radiotherapy for prostate cancer most often experience recurrence in dominant tumor sites. Whether failure is due to inadequate targeting, dosing or intrinsic radiation resistance remains unknown to our knowledge. Further study is warranted., (Copyright © 2015 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.)
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- 2015
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135. IVUmed: a nonprofit model for surgical training in low-resource countries.
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Jalloh M, Wood JP, Fredley M, and deVries CR
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- Humans, Poverty, Senegal, Workforce, Developing Countries, Education, Medical economics, General Surgery economics, General Surgery education, Organizations, Nonprofit organization & administration, Program Development
- Abstract
Background: Low- and middle-income countries (LMICs) face both training and infrastructural challenges for surgical care, particularly for specialty care, such as for urology. Practitioners charged with caring for these patients have few options for basic or advanced training., Objectives: IVUmed, a nonprofit organization, has for 20 years supported urological educational programs in 30 LMICs by coordinating a network of US and international academic and private providers, institutions, industry partners, and professional societies., Methods: IVUmed's motto, "Teach One, Reach Many" has emphasized a teach-the-teacher approach. Program partners, such as Hopital General de Grand Yoff in Dakar, Senegal, have advanced from little urological subspecialty availability to having the capacity to treat a wide range of conditions while also teaching surgeons from Senegal and neighboring countries., Conclusions: Long-term program commitments; effective communication; and a shared vision among the program site, the coordinating nongovernmental organization, and supporting organizations facilitate the development of thriving surgical teaching programs capable of serving local communities and conducting outreach training., (Copyright © 2015. Published by Elsevier Inc.)
- Published
- 2015
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136. Ebola in Freetown area, Sierra Leone--a case study of 581 patients.
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Ansumana R, Jacobsen KH, Sahr F, Idris M, Bangura H, Boie-Jalloh M, Lamin JM, and Sesay S
- Subjects
- Adolescent, Adult, Artemisinins administration & dosage, Artesunate, Ceftriaxone administration & dosage, Child, Combined Modality Therapy, Ethanolamines administration & dosage, Female, Fluorenes administration & dosage, Hemorrhagic Fever, Ebola epidemiology, Hemorrhagic Fever, Ebola mortality, Humans, Lumefantrine, Male, Metronidazole administration & dosage, Middle Aged, Sierra Leone epidemiology, Vitamin K administration & dosage, Young Adult, Anti-Infective Agents administration & dosage, Epidemics, Fluid Therapy, Hemorrhagic Fever, Ebola therapy
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- 2015
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137. Surgical outcomes and cultural perceptions in international hypospadias care.
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Metzler IS, Nguyen HT, Hagander L, Jalloh M, Nguyen T, Gueye SM, deVries CR, and Meara JG
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- Adolescent, Child, Child, Preschool, Cohort Studies, Cultural Characteristics, Humans, Infant, Internationality, Male, Treatment Outcome, Attitude to Health, Hypospadias surgery, Quality of Life
- Abstract
Purpose: This study was designed to assess perceptions of untreated hypospadias and quality of life in culturally disparate low or middle income countries, to highlight the demographic and care differences of patient groups treated for hypospadias in the surgical workshop context, and to evaluate the long-term outcomes achieved by these workshop groups., Materials and Methods: Family member perceptions of hypospadias, perioperative process measures and urethrocutaneous fistula rates were compared between 60 patients from Vietnam and Senegal treated for hypospadias through training workshops by local surgeons and pediatric urologists from the U.S. between 2009 and 2012, of whom approximately 42% had previously undergone repair attempts., Results: More than 90% of respondents surveyed believed that untreated hypospadias would affect the future of their child at least to some degree. Patient cohorts between the 2 sites differed from each other and published high income country cohorts regarding age, weight for age and frequency of reoperation. Telephone based outcomes assessment achieved an 80% response rate. Urethrocutaneous fistula was reported in 39% and 47% of patients in Vietnam and Senegal, respectively., Conclusions: Family members perceived that the social consequences of untreated hypospadias would be severe. Relative to patient cohorts reported in practices of high income countries, our patients were older, presented with more severe defects, required more reoperations and were often undernourished. Urethrocutaneous fistula rates were higher in cohorts from low or middle income countries relative to published rates for cohorts from high income countries. Our study suggests that outcomes measurement is a feasible and essential component of ethical international health care delivery and improvement., (Copyright © 2014 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.)
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- 2014
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138. [Advanced prostate cancer in Senegal. Clinical aspects at the General Hospital of Grand Yoff].
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Ndoye M, Niang L, Gandaho KI, Jalloh M, Labou I, and Gueye S
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- Adenocarcinoma blood, Adenocarcinoma epidemiology, Adenocarcinoma pathology, Aged, Aged, 80 and over, Delayed Diagnosis, Diagnostic Imaging, Hospitals, General, Humans, Male, Middle Aged, Neoplasm Metastasis, Prostate-Specific Antigen blood, Prostatic Neoplasms blood, Retrospective Studies, Senegal epidemiology, Prostatic Neoplasms epidemiology, Prostatic Neoplasms pathology
- Abstract
Unlabelled: Prostate cancer is a common disease, which continues to be discovered at advanced stages in Africa, despite improved diagnostic tools., Aim: The authors report the experience of the Department of Urology, General Hospital of Grand Yoff Dakar in the diagnostic of advanced prostate cancer., Material: This was a retrospective descriptive study on patients followed for advanced prostate cancer during the period from January 1st, 2004 to May 31st, 2010., Results: There were 102 people aged from 51 to 96 years with an average of 71 ± 9 years. A comorbid condition was associated in 24.5 % of cases. The circumstances of discovery were pain (32 cases), neurological signs (17 cases), and urinary disorders. DRE had objectified an abnormality in all patients. The serum levels of prostate specific antigen ranged from 5.88 ng/mL to 21,660 ng/mL, with an average of 1447.57 ± 812 ng/mL. A prostate biopsy was performed in 44 patients and prostatic adenocarcinoma was found in 97.7 % of cases with Gleason scores greater than 7 (33 cases). We found different metastatic sites at vertebral column (23 cases), at lung (14 cases), and on pelvic bones (11 cases)., Conclusion: The prostate cancer is a serious condition with high morbidity and mortality. The diagnosis is not made early in developing countries. We need a strategic plan to improve the early screening and we should develop supportive care too because of the high number of advanced cases diagnosed in our context., (Copyright © 2013 Elsevier Masson SAS. All rights reserved.)
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- 2014
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139. Implementation of PSA-based active surveillance in prostate cancer.
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Jalloh M and Cooperberg MR
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- Disease Progression, Humans, Male, Neoplasm Staging, Prostatic Neoplasms diagnosis, Prostatic Neoplasms pathology, Protein Isoforms metabolism, Epidemiological Monitoring, Prostate-Specific Antigen metabolism, Prostatic Neoplasms epidemiology, Prostatic Neoplasms metabolism
- Abstract
Prostate cancer screening had led to the diagnosis of a large proportion of localized and low-risk disease. Many of these cancer cases are believed to be indolent and would not be clinically perceived in the absence of screening. In addition to that, the wide use of active treatment has exposed these patients to treatment-related quality-of-life impact. In this setting active surveillance as a way of deferring active treatment and reserving such treatment to cases of disease progression only has gained interest. PSA has been widely used to identify patients eligible for active surveillance and also for disease monitoring. The goal of this review was to describe the place of PSA in the monitoring of patients under active surveillance based on the existing studies and to discuss the importance of PSA in light of other existing or emerging tools to monitor prostate cancer in active surveillance.
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- 2014
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140. Global patterns of prostate cancer incidence, aggressiveness, and mortality in men of african descent.
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Rebbeck TR, Devesa SS, Chang BL, Bunker CH, Cheng I, Cooney K, Eeles R, Fernandez P, Giri VN, Gueye SM, Haiman CA, Henderson BE, Heyns CF, Hu JJ, Ingles SA, Isaacs W, Jalloh M, John EM, Kibel AS, Kidd LR, Layne P, Leach RJ, Neslund-Dudas C, Okobia MN, Ostrander EA, Park JY, Patrick AL, Phelan CM, Ragin C, Roberts RA, Rybicki BA, Stanford JL, Strom S, Thompson IM, Witte J, Xu J, Yeboah E, Hsing AW, and Zeigler-Johnson CM
- Abstract
Prostate cancer (CaP) is the leading cancer among men of African descent in the USA, Caribbean, and Sub-Saharan Africa (SSA). The estimated number of CaP deaths in SSA during 2008 was more than five times that among African Americans and is expected to double in Africa by 2030. We summarize publicly available CaP data and collected data from the men of African descent and Carcinoma of the Prostate (MADCaP) Consortium and the African Caribbean Cancer Consortium (AC3) to evaluate CaP incidence and mortality in men of African descent worldwide. CaP incidence and mortality are highest in men of African descent in the USA and the Caribbean. Tumor stage and grade were highest in SSA. We report a higher proportion of T1 stage prostate tumors in countries with greater percent gross domestic product spent on health care and physicians per 100,000 persons. We also observed that regions with a higher proportion of advanced tumors reported lower mortality rates. This finding suggests that CaP is underdiagnosed and/or underreported in SSA men. Nonetheless, CaP incidence and mortality represent a significant public health problem in men of African descent around the world.
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- 2013
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141. [Management of prostate cancer in Senegal: what is being done?].
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Niang L, Ndoye M, Ouattara A, Jalloh M, Labou M, Thiam I, Kouka SC, Diaw JJ, and Gueye SM
- Subjects
- Adenocarcinoma blood, Adenocarcinoma drug therapy, Adult, Aged, Aged, 80 and over, Androgen Antagonists therapeutic use, Antineoplastic Agents therapeutic use, Bridged-Ring Compounds therapeutic use, Delayed Diagnosis, Diethylstilbestrol therapeutic use, Digital Rectal Examination, Estrogens, Non-Steroidal therapeutic use, Health Care Surveys, Humans, Male, Medical Records Systems, Computerized, Middle Aged, Orchiectomy methods, Prostatectomy methods, Prostatic Neoplasms blood, Prostatic Neoplasms drug therapy, Retrospective Studies, Senegal, Taxoids therapeutic use, Treatment Outcome, Adenocarcinoma diagnosis, Adenocarcinoma surgery, Biomarkers, Tumor blood, Prostate-Specific Antigen blood, Prostatic Neoplasms diagnosis, Prostatic Neoplasms surgery
- Abstract
Objective: To evaluate the management of patients with prostate cancer in Senegal., Materials and Methods: We performed a retrospective descriptive study, based on the medical records of patients managed for prostate cancer during a period of six years and a half from January 1, 2004, to June 30, 2010. All records of inpatients and outpatients managed for prostate cancer were collected. Data collection was performed through a standardized survey form, and included the following parameters: age, presence or absence of known history of prostate cancer in siblings, circumstances of discovery, clinical and paraclinical examination, histology and therapeutic modalities., Results: We studied the records of 164 patients with prostate cancer. The mean age of our patients was 65years, ranging from 43 to 96years. The circumstances of diagnosis were mostly due to lower urinary tract symptoms. Digital rectal examination was suggestive in 87% of cases, and PSA levels were high in 100% of cases, ranging from 5.88ng/ml to 21,660ng/ml, with a mean of 1447.57ng/ml. Half of the patients had PSA levels greater than or equal to 100ng/ml. The most common histological type was adenocarcinoma. During the study period, 49 radical prostatectomies were performed. The mean PSA levels of patients who underwent a prostatectomy were 23.4ng/ml. Radical retropubic prostatectomy was performed in 35 patients, and radical perineal prostatectomy was performed in 10 cases. Pulpectomy was the method most commonly used in metastatic prostate cancer; it was performed in 48 patients. After resistance to castration, antiandrogens were reintroduced in 13 patients, and diethylstilbestrol in four patients. Only two patients underwent a taxane-based chemotherapy regimen., Conclusion: The diagnosis of prostate cancer was usually tardive in Senegal. Treatment often involves surgical castration. Prostatectomy was only very seldom indicated., (Copyright © 2012 Elsevier Masson SAS. All rights reserved.)
- Published
- 2013
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142. Androgen Metabolism Gene Polymorphisms, Associations with Prostate Cancer Risk and Pathological Characteristics: A Comparative Analysis between South African and Senegalese Men.
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Fernandez P, Zeigler-Johnson CM, Spangler E, van der Merwe A, Jalloh M, Gueye SM, and Rebbeck TR
- Abstract
Prostate cancer is the most common cancer in men in developed countries and the leading cause of mortality in males in less developed countries. African ethnicity is one of the major risk factors for developing prostate cancer. Pathways involved in androgen metabolism have been implicated in the etiology of the disease. Analyses of clinical data and CYP3A4, CYP3A5, and SRD5A2 genotypes were performed in South African White (120 cases; 134 controls), Mixed Ancestry (207 cases; 167 controls), and Black (25 cases; 20 controls) men, as well as in Senegalese men (86 cases; 300 controls). Senegalese men were diagnosed earlier with prostate cancer and had higher median PSA levels compared to South African men. Metastasis occurred more frequently in Senegalese men. Gene polymorphism frequencies differed significantly between South African and Senegalese men. The CYP3A4 rs2740574 polymorphism was associated with prostate cancer risk and tumor aggressiveness in South African men, after correction for population stratification, and the SRD5A2 rs523349 CG genotype was inversely associated with high-stage disease in Senegalese men. These data suggest that variants previously associated with prostate cancer in other populations may also affect prostate cancer risk in African men.
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- 2012
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143. [Total cystectomies for cancers locally advanced of bladder about 12 cases in the service of urology of the general hospital of Grand-Yoff].
- Author
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Niang L, Kane R, Labou I, Jalloh M, Ndoye M, Konté KA, Diaw JJ, Kouka SC, and Gueye SM
- Subjects
- Adult, Aged, Aged, 80 and over, Feasibility Studies, Female, Hospitals, General, Humans, Male, Middle Aged, Neoplasm Staging, Retrospective Studies, Urinary Bladder Neoplasms pathology, Cystectomy methods, Urinary Bladder Neoplasms surgery
- Abstract
Objective: The goals of the study is to evaluate the feasability of the total cystectomy for cancer infiltrating locally advanced of bladder and to evaluate perioperatitive morbidity and short-term results., Patients and Methods: We made a retrospective study concerning 12 first patients having profited from a total cystectomy for cancer infiltrating of the bladder in our hospital over one period of 1 year. The parameters of study were: the age at the time of the diagnosis, circumstances of the diagnosis, antecedents of the patient, the histological type and stage TNM before and after intervention, the type of derivation associated, duration of the intervention, the anesthesia, complications and morbidity per- and postoperational. We carried out calculations of average and frequency for the data analysis., Results: The mean age was 51 years (extreme: 32; 83). They were nine men and three women. The circumstances of diagnosis were dominated by the total hematuria and in less frequency by the bladder irritative symptoms. The antecedents of the patients were dominated by the schistosomia (five cases) and the tobacco addiction (two cases). The histological type obtained in preoperative after biopsy or trans urethral resection of bladder found, seven cases of squamous cell carcinoma, four cases of transitional cell carcinoma and one case of adenocarcinoma. Into preoperative, three patients were at the stage pT2, eight patients pT3, one pT4. Four patients had a replacement of bladder: three by a bladder in Z and a patient had Camey II. They were the three patients pT2 preoperative and a patient pT3. Two patients had a standard ureterosigmoidostomy type coffey: the patient pT4 and a patient pT3. The six other patients had Bricker. All the patients profited from a blood transfusion peroperational (two units on average). We did not record any operational mortality. The complications and morbidity are represented by the suppurations of wall (three cases), the vesicocutaneous fistula (one case), the infections urinary and the anemia which was constant., Conclusion: The management of bladder cancer poses a real problem in our countries because of the diagnosis at advanced stage., (Copyright © 2010 Elsevier Masson SAS. All rights reserved.)
- Published
- 2011
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144. Screening for Prostate Cancer by Digital Rectal Examination and PSA Determination in Senegal.
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Niang L, Kouka CN, Jalloh M, and Gueye SM
- Abstract
Objectives. The goal of our study was to investigate the prevalence of prostate cancer in an unselected population of Senegalese men. Patients and Methods. We conducted the study over two years (2008 and 2009) on an unselected population of 572 Senegalese men, aged 35 and older. The following parameters have been investigated: the subject's age, the presence or absence of urination disorders, the family's history of prostate cancer or prostate surgery, the aspects of the prostate on digital rectal examination (DRE), the total PSA level, and the outcomes of the prostate biopsies. Data entry was performed with Epi Info 6 software and was analyzed and recorded using Excel software. We performed mean and frequency calculations. Results. The mean age of our patients was 65.5 years, with extremes of 38 and 93 years. Age groups from 50 to 59 and from 60 to 69 were the most represented. DRE was normal in the age group from 35 to 39, and only one patient in the age group from 40 to 49 had a prostate nodule. PSA level was greater than or equal to 4 ng/mL in 66 cases. A total of 5.4% patients had a PSA level greater than or equal to 10 ng/mL. Only two patients in the age group from 40 to 49 had a PSA level greater than 4 ng/mL. Of the 72 biopsies we performed, prostatic adenocarcinoma was found in 30.6% of the cases. It is the only type of prostate cancer we found in our series. The cases of prostate cancer were mostly observed in the age groups from 60 to 69 and from 70 to 79. No cases were detected for ages younger than 50. DRE gave indications of possible adenocarcinoma in 27.30% cases. Its sensitivity was 27%, while its positive predictive value was estimated at 35%. Of all positive biopsies, 4.5% had a PSA level between 0 and 3.9 ng/mL. In this case, the sensitivity of PSA was 95.5%, and the positive predictive value was 31.8%. High-grade intraepithelial neoplasiae were observed in 21 cases. Conclusion. Prostate cancer is frequent in Senegal, and screening remains the best way for early diagnosis.
- Published
- 2011
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145. [Urinary incontinence in woman: epidemiologic profile in Sub Saharian countries].
- Author
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Niang L, Kane R, Ndoye M, Jalloh M, Labou I, Diaw JJ, Ndiaye A, and Gueye SM
- Subjects
- Adult, Chad epidemiology, Cross-Sectional Studies, Female, Humans, Mauritania epidemiology, Middle Aged, Senegal epidemiology, Urinary Incontinence epidemiology
- Abstract
Unlabelled: The objective of this study was to describe the epidemiologic profile of urinary incontinence of the African woman of three Sub Saharan African countries., Material and Methods: A multicentric study summarized the epidemiological data collected in female from Nouakchott, Dakar and Ndjamena using a questionnaire. All participants filled an anonymous questionnaire including demographic data and marital status, medical, surgical, gynecological and obstetrical history and the characteristics of the urinary incontinence., Results: Overall, 3021 questionnaires were distributed, only 2070 answers (69%) could be processed. Mean age of the overall population was 28 years. Adult women aged less than 30 years accounted for 56% of the study population. The age group 30-49 years accounted for 42% of the population and only 2% of the study group had more than 50 years. The prevalence of incontinence was 367 cases over 2070 (17,7%). The types of incontinence found were: urgency in 28.6% of cases, stress incontinence in 38.4% of cases and mixed in 33% of cases. Approximately 23,9% of nulliparous and 23,5% of the multiparous had urinary incontinence. The leakage was occasional in 75% of the cases and regular in 25% of the cases. According to gravity, in 31% of cases the volume of urines lost necessitated a change of underwear. Of the women presenting urinary incontinence, 85 (23%) consulted a doctor. A psychosocial repercussion was found in 31% of the cases., Conclusion: Urinary incontinence is much more frequent in our areas than it was thought to be because it was rarely acknowledged., (Copyright © 2010 Elsevier Masson SAS. All rights reserved.)
- Published
- 2010
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146. Dietary intake of Senegalese adults.
- Author
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Anderson CA, Bellamy S, Figures M, Zeigler-Johnson C, Jalloh M, Spangler E, Coomes M, Gueye S, and Rebbeck TR
- Subjects
- Adult, Cross-Sectional Studies, Edible Grain, Fruit, Humans, Interviews as Topic methods, Male, Meat statistics & numerical data, Middle Aged, Reference Values, Senegal, Vegetables, Young Adult, Diet methods, Diet statistics & numerical data, Eating physiology, Feeding Behavior physiology
- Abstract
The aim of this work is to identify major food sources and dietary constituents of Senegalese adults. We conducted a cross-sectional study, using a single 24-hour dietary recall interview. Foods were classified into food groups based on similarities in nutrient content or use. Food groups included foods consumed individually, or as part of food mixtures such as stews, soups, or sandwiches. Median consumption (amount/day) of each food was determined and examined by relevant subgroups. Participants were 50 healthy Senegalese men, aged 20-62 years recruited at the Hôpital Général de Grand Yoff in Dakar, Senegal and from Sendou village, a rural area outside Dakar. A total of 90 foods and beverages were identified and classified into 11 groups. Sixty-five percent of foods identified could be classified as meats, grains, or fruits/vegetables. Fruits and vegetables comprised 42% (38/90) of all foods; meats 12% (11/90); and grains 11% (10/90). Sauces (6%, 5/90), sweets (4%, 4/90), and desserts (4%, 4/90) were also reported. The most common fruits/vegetables reported were potato, carrot, mango, and lettuce; commonly reported grains were bread and rice; and commonly reported meats were fish, beef, and ox. There were no differences in reported daily intake of each food by age, ethnicity, education, or residence. Most foods reported were traditional to the Senegalese diet, despite the increasing availability of Western foods in Senegal.
- Published
- 2010
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147. Evaluation of prostate cancer characteristics in four populations worldwide.
- Author
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Zeigler-Johnson CM, Rennert H, Mittal RD, Jalloh M, Sachdeva R, Malkowicz SB, Mandhani A, Mittal B, Gueye SM, and Rebbeck TR
- Subjects
- Adult, Black or African American statistics & numerical data, Aged, Aged, 80 and over, Body Mass Index, Humans, India epidemiology, Male, Middle Aged, Neoplasm Metastasis, Prostate-Specific Antigen blood, Prostatic Neoplasms diagnosis, Prostatic Neoplasms epidemiology, Prostatic Neoplasms pathology, Senegal epidemiology, United States epidemiology, White People statistics & numerical data, Prostatic Neoplasms ethnology
- Abstract
Introduction: Prostate cancer is common around the world, but rates of advanced disease differ substantially by race and geography. Although a major health issue, little is known about prostate cancer presentation in West Africa and India compared to the United States (US)., Objective: The aim of this study was to compare prostate tumor characteristics in four populations of men from the US, Senegal and India., Materials and Methods: We recruited prostate cancer patients from four hospital-based populations. The sample included 338 African-Americans, 1265 European-Americans, 122 Asian Indians, and 72 Senegalese. Questionnaire and medical record data were collected on each participant., Results: We found significant differences in age at diagnosis, BMI, and PSA levels across the groups. Senegalese and Indian men had a higher probability of high stage (T3/T4) disease compared to US men. Gleason grade was significantly higher in Asian Indians compared to other populations. African-Americans, Senegalese, and Asian Indians had a significantly higher probability of metastatic disease compared to European Americans. The odds ratios (OR) for metastasis were consistently higher in Asian Indians compared to American cases. As only 19/72 Senegalese were assessed for metastasis, OR could not be determined for metastasis., Conclusions: These results suggest that there are significant geographical and ethnic differences in the presentation of prostate cancer. Men in developing countries tend to present with advanced disease compared to US men. Identifying risk factors for advanced disease may help to decrease the rate of poor prostate cancer outcomes and associated mortality worldwide.
- Published
- 2008
148. Genetic susceptibility to prostate cancer in men of African descent: implications for global disparities in incidence and outcomes.
- Author
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Zeigler-Johnson CM, Spangler E, Jalloh M, Gueye SM, Rennert H, and Rebbeck TR
- Subjects
- Delivery of Health Care standards, Environmental Exposure, Genetic Predisposition to Disease genetics, Humans, Male, Prostatic Neoplasms epidemiology, Black People, Prostatic Neoplasms genetics
- Abstract
Introduction: Disparities in prostate cancer incidence and outcomes are a hallmark of the global pattern of prostate cancer, with men of African descent suffering disproportionately from this disease. The causes of these disparities are poorly understood., Methods: A review of the literature was undertaken to evaluate the role that genetic susceptibility may play in prostate cancer etiology and outcomes, with a particular emphasis on disparities., Results: The genetic contribution to prostate cancer is well established, and a number of candidate prostate cancer genes have been identified. Significant differences in the frequency of risk alleles in these genes have been identified across the major races. These allele frequency differences may in part explain an increased susceptibility to prostate cancer in some populations. In addition, non-genetic factors contribute significantly to prostate cancer disparities, and the cumulative contribution of both genetic and non-genetic factors to poor-prognosis prostate cancer may explain the poorer outcomes experienced by men of African descent., Conclusions: Prostate cancer disparities are a function of genetic susceptibility as well as environment, behavior, and health care factors acting in the context of this genetic susceptibility. Elimination of global prostate cancer disparities requires a full understanding of the effects of all of these factors on prostate cancer etiology and outcomes.
- Published
- 2008
149. A study of PSA values in an unselected sample of Senegalese men.
- Author
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Jalloh M, Zeigler-Johnson C, Sylla-Niang M, Niang L, Labou I, Konte KA, Rebbeck TR, and Gueye S
- Subjects
- Adult, Age Factors, Aged, Aged, 80 and over, Cross-Sectional Studies, Humans, Male, Middle Aged, Senegal, Prostate-Specific Antigen blood, Prostatic Neoplasms diagnosis
- Abstract
Objectives: Limited data exist about prostate cancer screening in Africa. The goal of this study was to describe the distribution of prostate-specific antigen (PSA) values in an unselected population of Senegalese men being screened for prostate cancer, and to assess the role of PSA screening tests in the early detection of prostate cancer in this population., Patients and Methods: We undertook a cross-sectional study in a community outreach setting with 113 unselected Senegalese men. Participants completed a questionnaire, underwent a digital rectal examination (DRE), and provided a blood sample for PSA testing. The questionnaire focused on demographic data, voiding problems, PSA values, and cigarette smoking. The Kruskal-Wallis test and the Fisher exact test were used to describe differences in PSA values among the groups., Results: The median age of the participants was 65 years (range, 36-87 years). Five percent of the men knew about PSA screening and 3% had ever been tested for PSA. The median PSA value overall was 1.28 ng/ml (range, 0.14 ng/ml-50.16 ng/ml). In the first 3 age quartiles (< 55, 55-64, and 65-72 years), the median PSA increased with age (1.0, 1.3, and 2.3 ng/mL, respectively; p = 0.012) as did the percentage of men with PSA > or = 4.0 ng/ml (4%, 7%, and 28%, respectively; p = 0.034). The percentage of men with a PSA > or = 4 ng/ml was higher in the abnormal versus normal DRE group (p = 0.023), while the median PSA was lower in the smoking versus nonsmoking group (p= 0.022). We found no relationship between PSA and occupation or ethnic group., Conclusion: PSA screening is not widely used in Senegalese men. In this sample, the likelihood of having an abnormal PSA increased with age and was more common in men with abnormal DREs. These results may motivate additional studies to determine if wider use of PSA testing in this population could lead to the detection of more prostate cancer cases and improve clinical outcomes among cancer cases.
- Published
- 2008
150. G6PD deficiency assessment in Freetown, Sierra Leone, reveals further insight into the molecular heterogeneity of G6PD A-.
- Author
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Jalloh A, Jalloh M, Gamanga I, Baion D, Sahr F, Gbakima A, Willoughby VR, and Matsuoka H
- Subjects
- Adolescent, Amino Acid Substitution genetics, Child, Preschool, Favism genetics, Female, Glucosephosphate Dehydrogenase biosynthesis, Glucosephosphate Dehydrogenase Deficiency epidemiology, Glucosephosphate Dehydrogenase Deficiency ethnology, Humans, Male, Molecular Sequence Data, Point Mutation, Polymorphism, Single Nucleotide, Prevalence, Sierra Leone epidemiology, Sierra Leone ethnology, Genetic Heterogeneity, Glucosephosphate Dehydrogenase genetics, Glucosephosphate Dehydrogenase Deficiency enzymology, Glucosephosphate Dehydrogenase Deficiency genetics
- Abstract
Glucose-6-phosphate dehydrogenase (G6PD) deficiency in Africa is of high prevalence, although precise data are lacking in many individual nations. We investigated 129 unrelated subjects (71 male subjects, 58 female subjects) visiting a teaching hospital in Freetown, Sierra Leone, to collect baseline data on the distribution of G6PD deficiency among respective ethnic groups in the country. We confirmed eight G6PD-deficient male subjects by two formazan-based blood tests (11.3% of the male subjects examined), and also detected the common 376A > G mutation in 11 male subjects and eight female subjects by sequencing exons 3-5 of the G6PD gene. Selected samples were further sequenced for exons 2-13 and introns 5, 7, 8, and 11. Among the deficient male subjects, six were G6PD A- carrying the double mutations (202G > A and 376A > G), all of whom were in the Temne and Mende ethnic groups. Others included A- Betica, and a novel variant having double mutations in exon 5 (311G > A and 376A > G forming 104 Arg > His and 126 Asn > Asp, respectively), which we designate as G6PD Sierra Leone. Subsequent haplotype analysis linked this novel variant to the G6PD A- "family".
- Published
- 2008
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