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187 results on '"Arko‐Mensah, John"'

9. Preponderance of vaccine-preventable diseases hotspots in northern Ghana: a spatial and space-time clustering analysis from 2010 to 2014

Author

Amoako-Sakyi, Daniel, Obiri-Yeboah, Dorcas, Ofosu, Anthony, Kusi, Kwadwo Asamoah, Osei, Kingsley, Adade, Richard, Aniakwaa-Bonsu, Ebenezer, Quansah, Reginald, Arko-Mensah, John, Amoah, Brodrick Yeboah, Kwakye-Nuako, Godwin, Frimpong, Eric Yaw, Combasseré-Cherif, Mariama, Mohammed, Hidaya, Maiga, Boubacar, Fobil, Julius, Quakyi, Isabella, and Gyan, Ben A.

Published
2022
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10. Work-Related Exposures and Musculoskeletal Disorder Symptoms Among Informal E-Waste Recyclers at Agbogbloshie, Ghana

Author

Acquah, Augustine A., D’Souza, Clive, Martin, Bernard, Arko-Mensah, John, Quakyi, Isabella A., Basu, Niladri, Robins, Thomas G., Fobil, Julius N., Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Black, Nancy L., editor, Neumann, W. Patrick, editor, and Noy, Ian, editor

Published
2021
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11. Occupational and Environmental Health Effects of Informal Electronic Waste Recycling – A Focus on Agbogbloshie, Ghana

Author

Fobil, Julius, Abotsi, Priscillah, Acquah, Augustine A., Arko-Mensah, John, D’Souza, Clive, Martin, Bernard, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Black, Nancy L., editor, Neumann, W. Patrick, editor, and Noy, Ian, editor

Published
2021
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30. Additional file 1 of Relationship between temperature and Anopheles gambiae sensu lato mosquitoes' susceptibility to pyrethroids and expression of metabolic enzymes

Author

Agyekum, Thomas Peprah, Arko-Mensah, John, Botwe, Paul Kingsley, Hogarh, Jonathan Nartey, Issah, Ibrahim, Dadzie, Samuel Kweku, Dwomoh, Duah, Billah, Maxwell Kelvin, Robins, Thomas, and Fobil, Julius Najah

Subjects
fungi, parasitic diseases
Abstract

Additional file 1: Table S1. Ambient and rearing water conditions for each temperature regime. Table S2. Mortality in An. gambiae s.l. mosquitoes exposed to pyrethroids. Table S3. Median levels of metabolic enzymes in An. gambiae s.l. mosquitoes reared at different temperature regimes. Table S4. Pairwise comparisons of enzyme levels in An. gambiae s.l. mosquitoes reared at different temperature regimes. Table S5. Mann–Whitney U-test between mosquitoes that were not exposed and those exposed to pyrethroids.

Published
2022
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32. Electronic waste exposure and DNA damage: a systematic review and meta-analysis.

Author

Issah, Ibrahim, Arko-Mensah, John, Agyekum, Thomas P., Dwomoh, Duah, and Fobil, Julius N.

Abstract

Inappropriate processing and disposal of electronic waste (e-waste) expose workers and surrounding populations to hazardous chemicals, including clastogens and aneugens. Recently, considerable literature has grown around e-waste recycling, associated chemical exposures and intermediate health outcomes, including DNA damage. Micronuclei (MN) frequency has been widely used as a biomarker to investigate DNA damage in human populations exposed to genotoxic agents. We conducted a systematic review of published studies to assess DNA damage in e-waste-exposed populations and performed a meta-analysis to evaluate the association between e-waste exposure and DNA damage. This systematic review with meta-analysis was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) statement checklist. Articles published in English from January 2000 through December 2020 investigating the associations between e-waste exposure and DNA damage were retrieved from the following three major databases: MEDLINE, ProQuest, and Scopus. Studies that reported the use of MN assay as a biomarker of DNA damage were included for meta-analysis. Studies that also reported other DNA damage biomarkers such as chromosomal aberrations, comet assay biomarkers, 8-hydroxy-2′-deoxyguanosine (8-OHdG), telomere length, apoptosis rate were reported using narrative synthesis. A total of 20 publications were included in this review, of which seven studies were within the occupational setting, and the remaining 13 studies were ecological studies. The review found six biomarkers of DNA damage (micronuclei, comets assay parameters (tail length, % tail DNA, tail moment, and olive tail moment), 8-OHdG, telomere length, apoptosis rate and chromosomal aberrations) which were assessed using seven different biological matrices (buccal cells, blood, umbilical cord blood, placenta, urine and semen). Most studies showed elevated levels of DNA damage biomarkers among e-waste exposed populations than in control populations. The most commonly used biomarkers were micronuclei frequency (n=9) in peripheral blood lymphocytes or buccal cells and 8-OHdG (n=7) in urine. The results of the meta-analysis showed that electronic waste recycling has contributed to an increased risk of DNA damage measured using MN frequency with a pooled estimate of the standardized mean difference (SMD) of 2.30 (95% CI: 1.36, 3.24, p<0.001) based on 865 participants. Taken together, evidence from this systematic review with meta-analysis suggest that occupational and non-occupational exposure to e-waste processing is associated with increased risk of DNA damage measured through MN assay and other types of DNA damage biomarkers. However, more studies from other developing countries in Africa, Latin America, and South Asia are needed to confirm and increase these results' generalizability. [ABSTRACT FROM AUTHOR]

Published
2023
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34. Occupational exposures to particulate matter and PM2.5-associated polycyclic aromatic hydrocarbons at the Agbogbloshie waste recycling site in Ghana

Author

Kwarteng, Lawrencia, primary, Devasurendra, Amila M., additional, Laskaris, Zoey, additional, Arko-Mensah, John, additional, Amoabeng Nti, Afua A., additional, Takyi, Sylvia, additional, Acquah, Augustine A., additional, Dwomoh, Duah, additional, Basu, Nil, additional, Robins, Thomas, additional, Fobil, Julius N., additional, and Batterman, Stuart, additional

Published
2022
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36. Association between global DNA methylation (LINE-1) and occupational particulate matter exposure among informal electronic-waste recyclers in Ghana.

Author

Issah, Ibrahim, Arko-Mensah, John, Rozek, Laura S., Rentschler, Katie, Agyekum, Thomas P., Dwumoh, Duah, Batterman, Stuart, Robins, Thomas G., and Fobil, Julius N.

Subjects
*PARTICULATE matter, *WASTE recycling, *CONFIDENCE intervals, *OCCUPATIONAL exposure, *BLUE collar workers, *REGRESSION analysis, *DNA methylation, *PSYCHOSOCIAL factors, *DESCRIPTIVE statistics
Abstract

This study examined the associations between PM (2.5 and 10) and global DNA methylation among 100 e-waste workers and 51 non-e-waste workers serving as controls. Long interspersed nucleotide repetitive elements-1 (LINE-1) was measured by pyrosequencing. Personal PM2.5 and PM10 were measured over a 4-hour work-shift using real-time particulate monitors incorporated into a backpack. Linear regression models were used to assess the association between PM and LINE-1 DNA methylation. The concentrations of PM2.5 and PM10 were significantly higher among the e-waste workers than the controls (77.32 vs 34.88, p < 0.001 and 210.21 vs 121.92, p < 0.001, respectively). PM2.5 exposure was associated with increased LINE-1 CpG2 DNA methylation (β = 0.003; 95% CI; 0.001, 0.006; p = 0.022) but not with the average of all 4 CpG sites of LINE-1. In summary, high levels of PM2.5 exposure was associated with increased levels of global DNA methylation in a site-specific manner. [ABSTRACT FROM AUTHOR]

Published
2022
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41. Effects of elevated temperatures on the development of immature stages of Anopheles gambiae (s.l.) mosquitoes.

Author

Agyekum, Thomas P., Arko‐Mensah, John, Botwe, Paul K., Hogarh, Jonathan N., Issah, Ibrahim, Dwomoh, Duah, Billah, Maxwell K., Dadzie, Samuel K., Robins, Thomas G., and Fobil, Julius N.

Abstract

Objective: This study investigated the effects of temperature on the development of the immature stages of Anopheles gambiae (s.l.) mosquitoes. Methods: Mosquito eggs were obtained from laboratory established colonies and reared under eight temperature regimes (25, 28, 30, 32, 34, 36, 38 and 40°C), and 80 ± 10% relative humidity. Larvae were checked daily for development to the next stage and for mortality. Pupation success, number of adults produced and sex ratio of the newly emerged adults were recorded. Larval survival was monitored every 24 h, and data were analysed using Kaplan–Meier survival analysis. Analysis of variance was used where data followed normal distribution, and a Kruskal–Wallis test where data were not normally distributed. Larval and pupal measurements were log‐transformed and analysed using ordinary least square regression with robust standard errors. Results: Increasing the temperature from 25 to 36°C decreased the development time by 10.57 days. Larval survival (X2(6) = 5353.12, p < 0.001) and the number of adults produced (X2(5) = 28.16, p < 0.001) decreased with increasing temperature. Increasing temperatures also resulted in significantly smaller larvae and pupae (p < 0.001). At higher temperatures, disproportionately more male than female mosquitoes were produced. Conclusions: Increased temperature affected different developmental stages in the life cycle of An. gambiae (s.l.) mosquitoes, from larval to adult emergence. This study contributes to the knowledge on the relationship between temperature and Anopheles mosquitoes and provides useful information for modelling vector population dynamics in the light of climate change. [ABSTRACT FROM AUTHOR]

Published
2022
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43. Musculoskeletal Disorder Symptoms among Workers at an Informal Electronic-Waste Recycling Site in Agbogbloshie, Ghana

Author

Acquah, Augustine A., primary, D’Souza, Clive, additional, Martin, Bernard J., additional, Arko-Mensah, John, additional, Dwomoh, Duah, additional, Nti, Afua Asabea Amoabeng, additional, Kwarteng, Lawrencia, additional, Takyi, Sylvia A., additional, Basu, Niladri, additional, Quakyi, Isabella A., additional, Robins, Thomas G., additional, and Fobil, Julius N., additional

Published
2021
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45. Preponderance of Vaccine Preventable Diseases Hotspots in Northern Ghana: A Spatial and Space-Time Clustering Analysis from 2010 to 2014

Author

Amoako-Sakyi, Daniel, primary, Obiri-Yeboah, Dorcas, additional, Ofosu, Anthony, additional, Kusi, Kwadwo Asamoah, additional, osei, Kingsley, additional, Adade, Richard, additional, Aniakwaa-Bonsu, Ebenezer, additional, Quansah, Reginald, additional, Arko-Mensah, John, additional, Amoah, Brodrick Yeboah, additional, Kwakye-Nuako, Godwin, additional, Combasseré-Cherif, Mariama Kaba, additional, Mohammed, Hidaya, additional, Maiga, Boubacar, additional, Fobil, Julius, additional, Quakyi, Isabella, additional, and Gyan, Ben A., additional

Published
2021
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46. Additional file 1 of Micronutrient-rich dietary intake is associated with a reduction in the effects of particulate matter on blood pressure among electronic waste recyclers at Agbogbloshie, Ghana

Author

Takyi, Sylvia A., Niladri Basu, Arko-Mensah, John, Botwe, Paul, Afua Asabea Amoabeng Nti, Lawrencia Kwarteng, Acquah, Augustine, Tettey, Prudence, Duah Dwomoh, Batterman, Stuart, Robins, Thomas, and Fobil, Julius N.

Subjects
surgical procedures, operative, bacterial infections and mycoses, neoplasms, digestive system, digestive system diseases
Abstract

Additional file 1. Appendix 1A: Health Characteristics of e-waste and non-e-waste recyclers overtime. Appendix 1B: Relationship between E-waste exposure, Job Task and Daily Income Accrued on Micronutrient Intake: Random Effect Model. Appendix 1C: Association between PM2.5 Exposure and Blood Pressure Outcomes among E-waste and Non-E-waste Recyclers. Appendix 1D: Effects of Dietary Micronutrient intake on the relationship between PM2.5 and BP among e-waste recyclers. Appendix 1E: Graph of Dietary Micronutrient Intake of E-waste and Non-E-waste Recyclers Overtime.

Published
2020
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48. Development of an observation-based tool for ergonomic exposure assessment in informal electronic waste recycling and other unregulated non-repetitive work

Author

Acquah, Augustine A., primary, D’Souza, Clive, additional, Martin, Bernard, additional, Arko-Mensah, John, additional, Asabea Nti, Afua, additional, Kwarteng, Lawrencia, additional, Takyi, Sylvia, additional, Botwe, Paul K., additional, Tettey, Prudence, additional, Dwomoh, Duah, additional, Quakyi, Isabella A., additional, Robins, Thomas G., additional, and Fobil, Julius N., additional

Published
2020
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49. Effects of Elevated Temperatures on the Growth and Development of Adult Anopheles gambiae (s.l.)(Diptera: Culicidae) Mosquitoes

Author

Agyekum, Thomas P, Arko-Mensah, John, Botwe, Paul K, Hogarh, Jonathan N, Issah, Ibrahim, Dwomoh, Duah, Billah, Maxwell K, Dadzie, Samuel K, Robins, Thomas G, and Fobil, Julius N

Abstract

Higher temperatures expected in a future warmer climate could adversely affect the growth and development of mosquitoes. This study investigated the effects of elevated temperatures on longevity, gonotrophic cycle length, biting rate, fecundity, and body size of Anopheles gambiae (s.l.)(Diptera: Culicidae) mosquitoes. Anopheles gambiae (s.l.)eggs obtained from laboratory established colonies were reared under eight temperature regimes (25, 28, 30, 32, 34, 36, 38, and 40°C), and 80 ± 10% RH. All adults were allowed to feed on a 10% sugar solution soaked in cotton wool; however, some mosquitoes were provided blood meal using guinea pig. Longevity was estimated for both blood-fed and non-blood-fed mosquitoes and analyzed using the Kaplan–Meier survival analysis. One-way ANOVA was used to test the effect of temperature on gonotrophic cycle length, biting rate, and fecundity. Adult measurement data were log-transformed and analyzed using ordinary least square regression with robust standard errors. Increasing temperature significantly decreased the longevity of both blood-fed (Log-rank test; X2(4) = 904.15, P< 0.001) and non-blood-fed (Log-rank test; X2(4) = 1163.60, P< 0.001) mosquitoes. In addition, the fecundity of mosquitoes decreased significantly (ANOVA; F(2,57) = 3.46, P= 0.038) with an increase in temperature. Body size (β = 0.14, 95% CI, 0.16, 0.12, P< 0.001) and proboscis length (β = 0.13, 95% CI, 0.17, 0.09, P <0.001) significantly decreased with increasing temperature from 25 to 34°C. Increased temperatures expected in a future warmer climate could cause some unexpected effects on mosquitoes by directly influencing population dynamics and malaria transmission.

Published
2022
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