128 results on '"Antwi S"'
Search Results
2. Baseline Characteristics and Utility of Pretherapeutic Fluorodeoxyglucose-PET for Pancreatic Cancer
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Carlson, D, Abdelrahman, A, Adjei Antwi, S, Tomlinson, J, Trivedi, K, Karbhari, A, Patnam Gopal Chetty, N, Halfdanarson, T, Goenka, A, Truty, M, Carlson, Danielle M, Abdelrahman, Amro M, Adjei Antwi, Stella K, Tomlinson, Jennifer L, Trivedi, Kamaxi, Karbhari, Aashna, Patnam Gopal Chetty, Nandakumar, Halfdanarson, Thor R, Goenka, Ajit H, Truty, Mark J, Carlson, D, Abdelrahman, A, Adjei Antwi, S, Tomlinson, J, Trivedi, K, Karbhari, A, Patnam Gopal Chetty, N, Halfdanarson, T, Goenka, A, Truty, M, Carlson, Danielle M, Abdelrahman, Amro M, Adjei Antwi, Stella K, Tomlinson, Jennifer L, Trivedi, Kamaxi, Karbhari, Aashna, Patnam Gopal Chetty, Nandakumar, Halfdanarson, Thor R, Goenka, Ajit H, and Truty, Mark J
- Abstract
Introduction: Pancreatic ductal adenocarcinoma (PDAC) is an aggressive and lethal malignancy. Surgical resection is the only curative modality combined with neoadjuvant chemotherapy to improve survival. Given the limitations of traditional responses like cross-sectional imaging (CT/MRI) or tumor markers, carbohydrate antigen 19-9 (CA19-9), the 2023 National Comprehensive Cancer Network (NCCN) guidelines included fluorodeoxyglucose-positron emission tomography (FDG-PET) as an adjunct to assess response to neoadjuvant chemotherapy. There are common misconceptions on the metabolic activity (tumor avidity) in PDAC, so we aimed to describe the baseline characteristics and utility of FDG-PET in a cohort of treatment naïve PDAC patients. Methods: A single center retrospective study was conducted capturing all biopsy proven, treatment naïve PDAC patients that underwent either baseline FDG-PET/CT or FDG-PET/MRI imaging between (2008-2023). Baseline FDG-PET characteristics were collected, including primary tumors' maximum standardized uptake value (SUVmax) defined as metabolic activity (FDG uptake) of tumor compared to surrounding pancreatic parenchymal background, and the identification of extra-pancreatic metastatic disease. Results: We identified 1095 treatment naïve PDAC patients that underwent baseline FDG-PET imaging at diagnosis. CA19-9 was elevated in 76% of patients. Overall, 96.3% (n=1054) of patients had FDG-avid tumors with a median SUVmax of 6.4. FDG-PET also identified suspicious extrapancreatic metastatic lesions in 50% of patients, with a higher proportion (p < 0.001) in PET/MRI (59.9%) vs. PET/CT (44.3%). After controlling for CA19-9 elevation, PET/MRI was superior in detection of extrapancreatic lesions compared to PET/CT. Conclusion: FDG-PET has significant utility in PDAC as a baseline imaging modality prior neoadjuvant therapy given the majority of tumors are FDG avid. Furthermore, FDG-PET can identify additional extrapancreatic suspicious lesions a
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- 2024
3. Outcomes of Neoadjuvant Chemotherapy for Invasive Intraductal Papillary Mucinous Neoplasm Compared with de Novo Pancreatic Adenocarcinoma
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Fogliati, A, Zironda, A, Fiorentini, G, Adjei Antwi, S, Amro, A, Starlinger, P, Grotz, T, Warner, S, Smoot, R, Thiels, C, Kendrick, M, Cleary, S, Truty, M, Starlinger, PP, Grotz, TE, Warner, SG, Smoot, RL, Thiels, CA, Kendrick, ML, Cleary, SP, Truty, MJ, Fogliati, A, Zironda, A, Fiorentini, G, Adjei Antwi, S, Amro, A, Starlinger, P, Grotz, T, Warner, S, Smoot, R, Thiels, C, Kendrick, M, Cleary, S, Truty, M, Starlinger, PP, Grotz, TE, Warner, SG, Smoot, RL, Thiels, CA, Kendrick, ML, Cleary, SP, and Truty, MJ
- Abstract
Background: The management of invasive intraductal papillary mucinous cystic neoplasm (I-IPMN) does not differ from de novo pancreatic ductal adenocarcinoma (PDAC); however, I-IPMNs are debated to have better prognosis. Despite being managed similarly to PDAC, no data are available on the response of I-IPMN to neoadjuvant chemotherapy. Methods: All patients undergoing pancreatic resection for a pancreatic adenocarcinoma from 2011 to 2022 were included. The PDAC and I-IPMN cohorts were compared to evaluate response to neoadjuvant therapy (NAT) and overall survival (OS). Results: This study included 1052 PDAC patients and 105 I-IPMN patients. NAT was performed in 25% of I-IPMN patients and 65% of PDAC patients. I-IPMN showed a similar pattern of pathological response to NAT compared with PDAC (p = 0.231). Furthermore, positron emission tomography (PET) response (71% vs. 61%; p = 0.447), CA19.9 normalization (85% vs. 76%, p = 0.290), and radiological response (32% vs. 37%, p = 0.628) were comparable between I-IPMN and PDAC. A significantly higher OS and disease-free survival (DFS) of I-IPMN was denoted by Kaplan–Meier analysis, with a p-value of < 0.001 in both plots. In a multivariate analysis, I-IPMN histology was independently associated with lower risk of recurrence and death. Conclusions: I-IPMN patients have a longer OS and DFS after surgical treatment when compared with PDAC patients. The more favorable oncologic outcome of I-IPMNs does not seem to be related to early detection, as I-IPMN histological subclass is independently associated with a lower risk of disease recurrence. Moreover, neoadjuvant effect on I-IPMN was non-inferior to PDAC in terms of pathological, CA19.9, PET, and radiological response and thus can be considered in selected patients.
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- 2024
4. Evaluating the Natural History of Groin Hernia from an “Unplanned” Watchful Waiting Strategy
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Ceresoli, M, Adjei Antwi, S, Mehmeti, M, Marmaggi, S, Braga, M, Nespoli, L, Ceresoli M., Adjei Antwi S. K., Mehmeti M., Marmaggi S., Braga M., Nespoli L., Ceresoli, M, Adjei Antwi, S, Mehmeti, M, Marmaggi, S, Braga, M, Nespoli, L, Ceresoli M., Adjei Antwi S. K., Mehmeti M., Marmaggi S., Braga M., and Nespoli L.
- Abstract
Groin hernia is one of the most common surgical diagnoses worldwide. The indication for surgery in asymptomatic or mildly symptomatic patients is discussed. Some trials have demonstrated the safety of a watchful waiting strategy. During the pandemic, waiting lists for hernia surgery dramatically increased the opportunity to evaluate the natural history of groin hernias. The present study aimed to evaluate the incidence of emergency hernia surgery in a large cohort of patients that were selected and were waiting for elective surgery. This is a retrospective cross-sectional cohort study including all patients evaluated and selected for elective groin hernia surgery at San Gerardo Hospital between 2017 and 2020. Elective and emergency hernia surgeries were recorded for all patients. The incidence of adverse events was also evaluated. Overall, 1423 patients were evaluated, and 964 selected patients (80.3%) underwent elective hernia surgery, while 17 patients (1.4%) required an emergency operation while waiting for an elective operation. A total of 220 (18.3%) patients were still awaiting surgery in March 2022. The overall cumulative risk levels for emergency hernia surgeries were 1%, 2%, 3.2%, and 5% at 12, 24, 36, and 48 months, respectively. There was no association between longer waiting periods and an increased need for emergency surgery. Our study indicates that up to 5% of patients with groin hernia require emergency surgery at 48 months from the evaluation; the increased waiting time for surgery for elective groin hernia repair was not associated with an increased incidence of adverse events.
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- 2023
5. Evaluating the Natural History of Groin Hernia from an 'Unplanned' Watchful Waiting Strategy
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Ceresoli M., Adjei Antwi S. K., Mehmeti M., Marmaggi S., Braga M., Nespoli L., Ceresoli, M, Adjei Antwi, S, Mehmeti, M, Marmaggi, S, Braga, M, and Nespoli, L
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emergency hernia surgery ,groin hernia ,conservative management ,pandemic ,watchful waiting - Abstract
Groin hernia is one of the most common surgical diagnoses worldwide. The indication for surgery in asymptomatic or mildly symptomatic patients is discussed. Some trials have demonstrated the safety of a watchful waiting strategy. During the pandemic, waiting lists for hernia surgery dramatically increased the opportunity to evaluate the natural history of groin hernias. The present study aimed to evaluate the incidence of emergency hernia surgery in a large cohort of patients that were selected and were waiting for elective surgery. This is a retrospective cross-sectional cohort study including all patients evaluated and selected for elective groin hernia surgery at San Gerardo Hospital between 2017 and 2020. Elective and emergency hernia surgeries were recorded for all patients. The incidence of adverse events was also evaluated. Overall, 1423 patients were evaluated, and 964 selected patients (80.3%) underwent elective hernia surgery, while 17 patients (1.4%) required an emergency operation while waiting for an elective operation. A total of 220 (18.3%) patients were still awaiting surgery in March 2022. The overall cumulative risk levels for emergency hernia surgeries were 1%, 2%, 3.2%, and 5% at 12, 24, 36, and 48 months, respectively. There was no association between longer waiting periods and an increased need for emergency surgery. Our study indicates that up to 5% of patients with groin hernia require emergency surgery at 48 months from the evaluation; the increased waiting time for surgery for elective groin hernia repair was not associated with an increased incidence of adverse events.
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- 2023
6. Global estimates and determinants of antituberculosis drug pharmacokinetics in children and adolescents: a systematic review and individual patient data meta-analysis.
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Gafar, F., Wasmann, R.E., McIlleron, H.M., Aarnoutse, R.E., Schaaf, H.S., Marais, B.J., Agarwal, D., Antwi, S., Bang, N.D., Bekker, A., Bell, D.J., Chabala, C., Choo, L., Davies, G.R., Day, J.N., Dayal, R., Denti, P., Donald, P.R., Engidawork, E., Garcia-Prats, A.J., Gibb, D., Graham, S.M., Hesseling, A.C., Heysell, S.K., Idris, M.I., Kabra, S.K., Kinikar, A., Kumar, A.K.H., Kwara, A., Lodha, R., Magis-Escurra, C., Martinez, N., Mathew, B.S., Mave, V., Mduma, E., Mlotha-Mitole, R., Mpagama, S.G., Mukherjee, A., Nataprawira, H.M., Peloquin, C.A., Pouplin, T., Ramachandran, G., Ranjalkar, J., Roy, V., Ruslami, Rovina, Shah, I., Singh, Y., Sturkenboom, M.G., Svensson, E.M., Swaminathan, S., Thatte, U., Thee, S., Thomas, T.A., Tikiso, T., Touw, D.J., Turkova, A., Velpandian, T., Verhagen, L.M., Winckler, J.L., Yang, H., Yunivita, V., Taxis, K., Stevens, J., Alffenaar, J.C., Gafar, F., Wasmann, R.E., McIlleron, H.M., Aarnoutse, R.E., Schaaf, H.S., Marais, B.J., Agarwal, D., Antwi, S., Bang, N.D., Bekker, A., Bell, D.J., Chabala, C., Choo, L., Davies, G.R., Day, J.N., Dayal, R., Denti, P., Donald, P.R., Engidawork, E., Garcia-Prats, A.J., Gibb, D., Graham, S.M., Hesseling, A.C., Heysell, S.K., Idris, M.I., Kabra, S.K., Kinikar, A., Kumar, A.K.H., Kwara, A., Lodha, R., Magis-Escurra, C., Martinez, N., Mathew, B.S., Mave, V., Mduma, E., Mlotha-Mitole, R., Mpagama, S.G., Mukherjee, A., Nataprawira, H.M., Peloquin, C.A., Pouplin, T., Ramachandran, G., Ranjalkar, J., Roy, V., Ruslami, Rovina, Shah, I., Singh, Y., Sturkenboom, M.G., Svensson, E.M., Swaminathan, S., Thatte, U., Thee, S., Thomas, T.A., Tikiso, T., Touw, D.J., Turkova, A., Velpandian, T., Verhagen, L.M., Winckler, J.L., Yang, H., Yunivita, V., Taxis, K., Stevens, J., and Alffenaar, J.C.
- Abstract
Item does not contain fulltext, BACKGROUND: Suboptimal exposure to antituberculosis (anti-TB) drugs has been associated with unfavourable treatment outcomes. We aimed to investigate estimates and determinants of first-line anti-TB drug pharmacokinetics in children and adolescents at a global level. METHODS: We systematically searched MEDLINE, Embase and Web of Science (1990-2021) for pharmacokinetic studies of first-line anti-TB drugs in children and adolescents. Individual patient data were obtained from authors of eligible studies. Summary estimates of total/extrapolated area under the plasma concentration-time curve from 0 to 24 h post-dose (AUC(0-24)) and peak plasma concentration (C (max)) were assessed with random-effects models, normalised with current World Health Organization-recommended paediatric doses. Determinants of AUC(0-24) and C (max) were assessed with linear mixed-effects models. RESULTS: Of 55 eligible studies, individual patient data were available for 39 (71%), including 1628 participants from 12 countries. Geometric means of steady-state AUC(0-24) were summarised for isoniazid (18.7 (95% CI 15.5-22.6) h·mg·L(-1)), rifampicin (34.4 (95% CI 29.4-40.3) h·mg·L(-1)), pyrazinamide (375.0 (95% CI 339.9-413.7) h·mg·L(-1)) and ethambutol (8.0 (95% CI 6.4-10.0) h·mg·L(-1)). Our multivariate models indicated that younger age (especially <2 years) and HIV-positive status were associated with lower AUC(0-24) for all first-line anti-TB drugs, while severe malnutrition was associated with lower AUC(0-24) for isoniazid and pyrazinamide. N-acetyltransferase 2 rapid acetylators had lower isoniazid AUC(0-24) and slow acetylators had higher isoniazid AUC(0-24) than intermediate acetylators. Determinants of C (max) were generally similar to those for AUC(0-24). CONCLUSIONS: This study provides the most comprehensive estimates of plasma exposures to first-line anti-TB drugs in children and adolescents. Key determinants of drug exposures were identified. These may be relevant for population-specif
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- 2023
7. Adequacy of WHO weight-band dosing and fixed-dose combinations for the treatment of TB in children
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Kwara, A., primary, Yang, H., additional, Martyn-Dickens, C., additional, Enimil, A., additional, Amissah, A. K., additional, Ojewale, O., additional, Dompreh, A., additional, Bosomtwe, D., additional, Sly-Moore, E., additional, Opoku, T., additional, Appiah, A. F., additional, Obeng, R., additional, Asiedu, P., additional, Maranchick, N., additional, Alshaer, M. H., additional, Peloquin, C. A., additional, and Antwi, S., additional
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- 2023
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8. WCN23-0669 PERITONEAL DIALYSIS IN AFRICA: INSIGHTS AND BARRIERS IDENTIFIED FROM AN AFRAN SURVEY
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VAN HOUGENHOUCK-TULLEKEN, W., primary, Ngaruiya, G., additional, Antwi, S., additional, and Darwish, R., additional
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- 2023
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9. Establishing a Core Outcome Measure for Peritoneal Dialysis-related Peritonitis: A Standardized Outcomes in Nephrology-Peritoneal Dialysis Consensus Workshop Report.
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Shen J.I., Cho Y., Manera K.E., Brown F., Dong J., Al Sahlawi M., Acevedo R.G., Htay H., Ito Y., Kanjanabuch T., Nessim S.J., Ngaruiya G., Piraino B., Szeto C.-C., Teitelbaum I., Amir N., Craig J.C., Baumgart A., Gonzalez A.M., Viecelli A.K., Wilkie M., Tong A., SONG Executive Committee, Craig J., Wang A., Hemmelgarn B., Manns B., Wheeler D., Gill J., Tugwell P., Pecoits-Filho R., Crowe S., Harris T., Van Biesen W., Winkelmayer W., SONG-PD Steering Group, Johnson D.W., Brown E., Brunier G., Manera K., Mehrotra R., Dunning S.-A., Dunning T., SONG-PD Infection Expert Working Group, Perl J., Szeto C.C., Forfang D., Gomez R., Nessim S., Shen J., SONG Coordinating Committee, Martin A., Bernier-Jean A., Matus Gonzalez A., Viecelli A., Ju A., Teixera-Pinto A., Sautenet B., Hanson C., Guha C., Sumpton D., Hannan E., O'Lone E., Au E., Kerklaan J., Dunn L., Howell M., Nataatmadja M., Evangelidis N., Natale P., Cazzolli R., Anumudu S., Carter S., Gutman T., Rahim Vastani T.V., Participants and contributors - Health professionals, Abu-Alfa A., Matus-Gonzalez A., Aufricht C., Wallace E., Dasgupta I., Knight J., Foo M., Lambie M., Schreiber M., Pisoni R., Apata R., Antwi S., Novosad S., Davies S., Booth S., Participants and contributors - Patients/family members/caregivers, Lau A., Chi A., Heckendorn B., Allen B., Dewey B., Horton D., Edwards D., Robinson E., Franco F., Braddock G., Grossman G., Chestney J., Laws K., Clark K., Penningtown K., Richardson L., Verdin N., Jefferson N., Scholes-Robertson N., Gedney N., Chestney N., Griffiths P., Kidwell S., Downs S., Ball T., Yaeger T., Elly V., Senior W., Shen J.I., Cho Y., Manera K.E., Brown F., Dong J., Al Sahlawi M., Acevedo R.G., Htay H., Ito Y., Kanjanabuch T., Nessim S.J., Ngaruiya G., Piraino B., Szeto C.-C., Teitelbaum I., Amir N., Craig J.C., Baumgart A., Gonzalez A.M., Viecelli A.K., Wilkie M., Tong A., SONG Executive Committee, Craig J., Wang A., Hemmelgarn B., Manns B., Wheeler D., Gill J., Tugwell P., Pecoits-Filho R., Crowe S., Harris T., Van Biesen W., Winkelmayer W., SONG-PD Steering Group, Johnson D.W., Brown E., Brunier G., Manera K., Mehrotra R., Dunning S.-A., Dunning T., SONG-PD Infection Expert Working Group, Perl J., Szeto C.C., Forfang D., Gomez R., Nessim S., Shen J., SONG Coordinating Committee, Martin A., Bernier-Jean A., Matus Gonzalez A., Viecelli A., Ju A., Teixera-Pinto A., Sautenet B., Hanson C., Guha C., Sumpton D., Hannan E., O'Lone E., Au E., Kerklaan J., Dunn L., Howell M., Nataatmadja M., Evangelidis N., Natale P., Cazzolli R., Anumudu S., Carter S., Gutman T., Rahim Vastani T.V., Participants and contributors - Health professionals, Abu-Alfa A., Matus-Gonzalez A., Aufricht C., Wallace E., Dasgupta I., Knight J., Foo M., Lambie M., Schreiber M., Pisoni R., Apata R., Antwi S., Novosad S., Davies S., Booth S., Participants and contributors - Patients/family members/caregivers, Lau A., Chi A., Heckendorn B., Allen B., Dewey B., Horton D., Edwards D., Robinson E., Franco F., Braddock G., Grossman G., Chestney J., Laws K., Clark K., Penningtown K., Richardson L., Verdin N., Jefferson N., Scholes-Robertson N., Gedney N., Chestney N., Griffiths P., Kidwell S., Downs S., Ball T., Yaeger T., Elly V., and Senior W.
- Abstract
Introduction: Peritoneal dialysis (PD)-related peritonitis is one of the leading causes of discontinuation of PD and is considered a critically important outcome for patients on PD. However, there is no universally accepted method of measuring this outcome in clinical trials. Method(s): We convened an online consensus workshop to establish a core outcome measure for PD-related peritonitis in clinical trials. Result(s): A total of 53 participants, including 18 patients and caregivers, from 12 countries engaged in breakout discussions in this workshop. Transcripts were analyzed thematically. We identified the following 3 themes: (i) feasibility and applicability across diverse settings, which reflected the difficulty with implementing laboratory-based measures in resource-limited environments; (ii) ensuring validity, which included minimizing false positives and considering the specificity of symptoms; and (iii) being meaningful and tangible to patients, which meant that the measure should be easy to interpret, reflect the impact that symptoms have on patients, and promote transparency by standardizing the reporting of peritonitis among dialysis units. Conclusion(s): A core outcome measure for PD-related peritonitis should include both symptom-based and laboratory-based criteria. Thus, the International Society for Peritoneal Dialysis (ISPD) definition of peritonitis is acceptable. However, there should be consideration of reporting suspected peritonitis in cases where laboratory confirmation is not possible. The measure should include all infections from the time of catheter insertion and capture both the rate of infection and the number of patients who remain peritonitis free. A core outcome measure with these features would increase the impact of clinical trials on the care and decision-making of patients receiving PD.Copyright © 2022 International Society of Nephrology
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- 2022
10. The Unacknowledged Impact of Urinary Schistosomiasis in Children: 5 Cases from Kumasi, Ghana
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Antwi, S, Aboah, K E K, and Sarpong, C K G
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- 2014
11. Reply to: Observations on malnutrition and anti-TB drugs in Ghana
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Seneadza, N. A. H., primary, Antwi, S., additional, Enimil, A., additional, Peloquin, C. A., additional, and Kwara, A., additional
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- 2021
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12. Effect of malnutrition on the pharmacokinetics of anti-TB drugs in Ghanaian children
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Seneadza, N. A. H., primary, Antwi, S., additional, Yang, H., additional, Enimil, A., additional, Dompreh, A., additional, Wiesner, L., additional, Peloquin, C. A., additional, Lartey, M., additional, Lauzardo, M., additional, and Kwara, A., additional
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- 2021
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13. d3-GHR genotype does not explain heterogeneity in GH responsiveness in hypopituitary adults
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Moyes, V. J., Walker, D. M., Owusu-Antwi, S., Maher, K. T., Metherell, L., Akker, S. A., Monson, J. P., Clark, A. J. L., and Drake, W. M.
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- 2010
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14. A study in the transformation and continuity of Akan religious ritual and ceremony in Gomoa, central Ghana
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Antwi, S. A.
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100 ,Philosophy - Abstract
The study is about the transformation and continuity of religious ritual and ceremony in Gomoa, an Akan society in Ghana. It is examined partly in terms of the strong influence of a mission-connected church, the Wesleyan/Methodists and partly in terms of colonialism; especially the changing political and economic structures and their effect on Akan sooio-religious institutions and their functional equivalent.The study offers two divergent, yet Complementary examples in this process. In the first, a detailed account is given of the stool festival in five Gomoa towns, as it takes place each year between July and September, and the expression it provides of chieftainship and priesthood. The description covers rituals, religious texts and iconography. The second example, a conscious Christian representation or adaptation of the indigenous Akan chieftaincy and priesthood function as seen in an independent church, Musama Disco Christo Church, also contains some ritual texts and iconography. Some of the texts are given in full in the appendix.In the first model, we point out that the cycle of religious festivals unites participants and acts as the sanction of their loyalty, amity, co-operation and respect of one another's rights.At one level of analysis, we realize that both verbal and non-verbal acts during the religious ceremonies are an enactment of the ideas of the Gomoa/Akan about the ordering of their this-world view, and the moral reciprocal relations between classes of beings.At another level, the acts attempt to establish a contract between mortaland immortal beings. What seems to emerge when one looks at the first model, i historically, is not only the sense of links with the past, but also diversities within the present. The diversities and differences lead one to postulate two broad types of indigenous religious phenomena: truly traditional practices and 'neo' traditional developments.A further comparison between cases one and two reveals ritual similarities and differences. Both are seen to follow the models of their time and tradition. They also emphasize the emotional and rational aspects of Akan spirituality as seen in theological thought, thus making them concrete and effective to devotees.
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- 1980
15. Safety and Effectiveness of Mist Antiaris, a Herbal Preparation for Treatment of Peripheral Neuropathy
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Antwi, S., primary, Asiedu-Larbi, J., additional, Martey, O. N. K., additional, Quasie, O., additional, Boakye-Yiadom, M., additional, Ayertey, F., additional, Yeboah, R., additional, Sapaty, C. A., additional, Offei-Abrokwa, D., additional, Oduro-Mensah, D., additional, Kumatia, E. K., additional, and Ocloo, A., additional
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- 2019
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16. Un agent peut en cacher un autre ! À propos d’un cas d’intoxication par Microcosmus
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Schmitt, C., primary, Antwi, S., additional, Domangé, B., additional, Torrents, R., additional, Simon, N., additional, and de Haro, L., additional
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- 2018
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17. The geographical distribution of dialysis services in Ghana
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Tannor, E. K., primary, Awuku, Y. A., additional, Boima, V., additional, and Antwi, S., additional
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- 2018
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18. Antidiabetic activity of aqueous stem bark extract of Annickia polycarpain alloxan-induced diabetic mice
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Lartey, N.L., Asare-Anane, H., Ofori, E.K., Antwi, S., Asiedu-Larbi, J., Ayertey, F., and Okine, L.K.N.
- Abstract
There is a growing need to develop new drugs for type II diabetes mellitus (DM) from plant sources due to the high cost and adverse side effects of current drug therapies. To this end, the antidiabetic activity of aqueous stem-bark extract of A. polycarpa(APE) in alloxan-induced diabetic ICR mice was investigated.
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- 2021
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19. Hepatocellular Carcinoma Risk Prediction in the NIH-AARP Diet and Health Study Cohort: A Machine Learning Approach
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Thomas J, Liao LM, Sinha R, Patel T, and Antwi SO
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hcc ,hepatocellular carcinoma ,liver cancer ,machine learning ,risk prediction ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Jonathan Thomas,1 Linda M Liao,2 Rashmi Sinha,2 Tushar Patel,1,* Samuel O Antwi3,* 1Department of Transplantation, Mayo Clinic, Jacksonville, FL, USA; 2Division of Cancer Epidemiology and Genetics, The National Cancer Institute, Bethesda, MD, USA; 3Department of Quantitative Health Sciences, Mayo Clinic, Jacksonville, FL, USA*These authors contributed equally to this workCorrespondence: Samuel O Antwi, Department of Quantitative Health Sciences, Mayo Clinic, 4500 San Pablo Road South, Vincent Stabile Building 756N, Jacksonville, FL, 32224, USA, Tel +1-904-953-0310, Fax +1-904-953-1447, Email Antwi.samuel@mayo.eduBackground: Prediction of hepatocellular carcinoma (HCC) development in persons with known risk factors remain a challenge and is an urgent unmet need, considering projected increases in HCC incidence and mortality in the US. We aimed to use machine learning techniques to identify a set of demographic, lifestyle, and health history information that can be used simultaneously for population-level HCC risk prediction.Methods: Data from 377,065 participants of the NIH-AARP Diet and Health Study, among whom 647 developed HCC over 16 years of follow-up, were analyzed. The sample was randomly divided into independent training (60%) and validation (40%) sets. We evaluated 123 participant characteristics and tested 15 different machine learning algorithms for robustness in predicting HCC risk. Separately, we evaluated variables selected from multivariable logistic regression for risk prediction.Results: The random under-sampling boosting (RUSBoost) algorithm performed best during model testing. Fourteen participant characteristics were selected for risk prediction based on differences between cases and controls (Bonferroni-corrected p-values < 0.0004) and from the most frequently used variables in the initial two decision trees of the RUSBoost learner trees. A predictive model based on the 14 variables had an AUC of 0.72 (sensitivity=0.68, specificity=0.63) and independent validation AUC of 0.65 (sensitivity=0.68, specificity=0.63). A subset of 9 variables identified through logistic regression also had an AUC of 0.72 (sensitivity=0.67, specificity=0.63) and independent validation AUC of 0.65 (sensitivity=0.70, specificity=0.61).Conclusion: Population-level HCC risk prediction can be performed with a machine learning-based algorithm and could inform strategies for improving HCC risk reduction in at-risk groups.Keywords: HCC, hepatocellular carcinoma, liver cancer, machine learning, risk prediction
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- 2022
20. Pelvi-Ureteric Junction Obstruction at Red Cross Children's Hospital, Cape Town: a Six Year Review
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Ocheke, IE, Antwi, S, Gajja, P, McCulloch, MI, Nourse, P, Ocheke, IE, Antwi, S, Gajja, P, McCulloch, MI, and Nourse, P
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No Abstract.
- Published
- 2015
21. Assessment of GFR by four methods in adults in Ashanti, Ghana: the need for an eGFR equation for lean African populations
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Eastwood, JB, Kerry, SM, Plange-Rhule, J, Micah, FB, Antwi, S, Boa, FG, Banerjee, D, Emmett, L, Miller, MA, and Cappuccio, FP
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- 2010
22. The unacknowledged impact of urinary schistosomiasis in children: 5 cases from Kumasi, Ghana
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Antwi, S, primary, Aboah, KEK, additional, and Saprong, CKG, additional
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- 2015
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23. Prevalence of familial isolated pituitary adenomas
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Herincs, M, primary, Antwi, S Owusu, additional, Chahal, H S, additional, Kumar, S R, additional, Ozfirat, Z, additional, Grossman, A B, additional, Druce, M R, additional, Akker, S A, additional, Drake, W M, additional, and Korbonits, M, additional
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- 2013
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24. Paediatric nephrology
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Shi, H., primary, Wen, J., additional, LI, Z., additional, Elsayed, M., additional, Kamal, K., additional, Shi, H., additional, El Shal, A., additional, Youssef, D., additional, Caubet, C., additional, Lacroix, C., additional, Benjamin, B., additional, Bandin, F., additional, Bascands, J.-L., additional, Monsarrat, B., additional, Decramer, S., additional, Schanstra, J., additional, Laetitia, D.-B., additional, Ulinski, T., additional, Aoun, B., additional, Ozdemir, K., additional, Dincel, N., additional, Sozeri, B., additional, Mir, S., additional, Berdeli, A., additional, Akyigit, F., additional, Mizerska-Wasiak, M., additional, Panczyk-Tomaszewska, M., additional, Szymanik-Grzelak, H., additional, Roszkowska-Blaim, M., additional, Jamin, A., additional, Dehoux, L., additional, Monteiro, R. C., additional, Deschenes, G., additional, Bouts, A., additional, Davin, J.-C., additional, Dorresteijn, E., additional, Schreuder, M., additional, Lilien, M., additional, Oosterveld, M., additional, Kramer, S., additional, Gruppen, M., additional, Pintos-Morell, G., additional, Ramaswami, U., additional, Parini, R., additional, Rohrbach, M., additional, Kalkum, G., additional, Beck, M., additional, Carter, M., additional, Antwi, S., additional, Callegari, J., additional, Kotanko, P., additional, Levin, N. W., additional, Rumjon, A., additional, Macdougall, I. C., additional, Turner, C., additional, Booth, C. J., additional, Goldsmith, D., additional, Sinha, M. D., additional, Camilla, R., additional, Loiacono, E., additional, Donadio, M. E., additional, Conrieri, M., additional, Bianciotto, M., additional, Bosetti, F. M., additional, Peruzzi, L., additional, Conti, G., additional, Bitto, A., additional, Amore, A., additional, Coppo, R., additional, Maldyk, J., additional, Chou, H.-H., additional, Chiou, Y.-Y., additional, Bochniewska, V., additional, Jobs, K., additional, Jung, A., additional, Fallahzadeh Abarghooei, M. H., additional, Zare, J., additional, Sedighi Goorabi, V., additional, Derakhshan, A., additional, Basiratnia, M., additional, Fallahzadeh Abarghooei, M. A., additional, Hosseini Al-Hashemi, G., additional, Fallahzadeh Abarghooei, F., additional, Kluska-Jozwiak, A., additional, Soltysiak, J., additional, Lipkowska, K., additional, Silska, M., additional, Fichna, P., additional, Skowronska, B., additional, Stankiewicz, W., additional, Ostalska-Nowicka, D., additional, Zachwieja, J., additional, Girisgen, L., additional, Sonmez, F., additional, Yenisey, C., additional, Kis, E., additional, Cseprekal, O., additional, Kerti, A., additional, Szabo, A., additional, Salvi, P., additional, Benetos, A., additional, Tulassay, T., additional, Reusz, G., additional, Makulska, I., additional, Szczepanska, M., additional, Drozdz, D., additional, Zwolnska, D., additional, Tolstova, E., additional, Anis, L., additional, Alber, B., additional, Edouard, B., additional, Gerard, C., additional, Seni, K., additional, Dunia Julienne Hadiza, T., additional, Christian, S., additional, Benoit, T., additional, Francois, B., additional, Adama, L., additional, Rosenberg, A., additional, Munro, J., additional, Murray, K., additional, Wainstein, B., additional, Ziegler, J., additional, Singh-Grewal, D., additional, Boros, C., additional, Adib, N., additional, Elliot, E., additional, Fahy, R., additional, Mackie, F., additional, Kainer, G., additional, Polak-Jonkisz, D., additional, Zwolinska, D., additional, Laszki-Szczachor, K., additional, Janocha, A., additional, Rusiecki, L., additional, Sobieszczanska, M., additional, Garzotto, F., additional, Ricci, Z., additional, Clementi, A., additional, Cena, R., additional, Kim, J. C., additional, Zanella, M., additional, Ronco, C., additional, Purzyc, L., additional, Peco-Antic, A., additional, Kotur-Stevuljevic, J., additional, Paripovic, D., additional, Scekic, G., additional, Milosevski-Lomic, G., additional, Bogicevic, D., additional, Spasojevic-Dimitrijeva, B., additional, Hassan, R., additional, El-Husseini, A., additional, Sobh, M., additional, Ghoneim, M., additional, Harambat, J., additional, Bonthuis, M., additional, Van Stralen, K. J., additional, Ariceta, G., additional, Battelino, N., additional, Jahnukainen, T., additional, Sandes, A. R., additional, Combe, C., additional, Jager, K. J., additional, Verrina, E., additional, Schaefer, F., additional, Espindola, R., additional, Bacchetta, J., additional, Cochat, P., additional, Stefanis, C., additional, Leroy, S., additional, Fernandez-Lopez, A., additional, Nikfar, R., additional, Romanello, C., additional, Bouissou, F., additional, Gervaix, A., additional, Gurgoze, M., additional, Bressan, S., additional, Smolkin, V., additional, Tuerlinkx, D., additional, Stefanidis, C., additional, Vaos, G., additional, Leblond, P., additional, Gungor, F., additional, Gendrel, D., additional, Chalumeau, M., additional, Rawlins, D., additional, Simpson, J. M., additional, Arnaud, G., additional, Anne, M., additional, Stephanie, T., additional, Flavio, B., additional, Veronique, F. B., additional, Stephane, D., additional, Mumford, L., additional, Marks, S., additional, Ahmad, N., additional, Maxwell, H., additional, Tizard, J., additional, Vidal, E., additional, Amigoni, A., additional, Varagnolo, M., additional, Benetti, E., additional, Ghirardo, G., additional, Brugnolaro, V., additional, Murer, L., additional, Christine, G., additional, Degi, A., additional, Szabo, A. J., additional, Reusz, G. S., additional, Vidoni, A., additional, Ramondo, G., additional, and Miotto, D., additional
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- 2012
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25. Assessment and Management of Severe Malnutrition in Children
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Antwi, S, primary
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- 2011
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26. Malnutrition: Missed opportunities for diagnosis
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Antwi, S, primary
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- 2009
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27. Anti-Diarrhoeal Activity of Blighia sapida (Sapindaceae) in Rats and Mice
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Antwi, S., primary, Martey, O.N.K., additional, Donkor, K., additional, and Nii-Ayitey, L.K., additional
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- 2009
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28. PREVALENCE, DETECTION, MANAGEMENT AND CONTROL OF HYPERTENSION IN ASHANTI, WEST AFRICA
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Cappuccio, F. P., primary, Micah, F. B., additional, Emmett, L., additional, Kerry, S. M., additional, Antwi, S., additional, Martin-Peprah, R., additional, Phillips, R. O., additional, Plange-Rhule, J., additional, and Eastwood, J. B., additional
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- 2004
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29. Paediatric Tuberculosis at the National Teaching Hospital CNHU-HKM of Cotonou, Benin: A Retrospective Study.
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Lalya, F., Ocheke, I. E, Hounnou-d'Almeida, M., Sagbo, G., Alao, J., Antwi, S, Ayivi, B., and Koumakpai, S.
- Abstract
Copyright of West African Journal of Medicine is the property of West African Journal of Medicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2010
30. APOLl Bi- and Monoallelic Variants and Chronic Kidney Disease in West Africans.
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Gbadegesin, R. A., Ulasi, I., Ajayi, S., Raji, Y., Olanrewaju, T., Osafo, C., Ademola, A. D., Asinobi, A., Winkler, C. A., Burke, D., Arogundade, F., Ekern, I., Plange-Rhule, J., Mamven, M., Matekole, M., Amodu, O., Cooper, R., Antwi, S., Adeyemo, A. A., and Ilori, T. O.
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- *
DISEASE risk factors , *FOCAL segmental glomerulosclerosis , *KIDNEY glomerulus diseases , *GENETIC epidemiology , *KIDNEY diseases - Abstract
BACKGROUND Apolipoprotein L1 gene (APOL1) variants are risk factors for chronic kidney disease (CKD) among Black Americans. Data are sparse on the genetic epidemiology of CKD and the clinical association of APOL1 variants with CKD in West Africans, a major group in the Black population. METHODS We conducted a case-control study involving participants from Ghana and Nigeria who had CKD stages 2 through 5, biopsy-proven glomerular disease, or no kidney disease. We analyzed the association of CKD with APOL1 variants among partici- pants with high-risk genotypes (two APOL1 risk alleles) and those with low-risk genotypes (fewer than two APOLI risk alleles) by fitting logistic-regression models that controlled for covariates, including clinical site, age, and sex. RESULTS Among 8355 participants (4712 with CKD stages 2 through 5, 866 with glomeru- lar diseases, and 2777 with no kidney disease), the prevalence of monoallelic APOLI variants was 43.0% and that of biallelic APOL1 variants was 29.7%. Partici- pants with two APOL1 risk alleles had higher odds of having CKD than those with one risk allele or no risk alleles (adjusted odds ratio, 1.25; 95% confidence interval [CI], 1.11 to 1.40), as well as higher odds of focal segmental glomerulosclerosis (adjusted odds ratio, 1.84; 95% CI, 1.30 to 2.61). Participants with one APOL1 risk allele had higher odds of having CKD than those with no risk alleles (adjusted odds ratio, 1.18; 95% CI, 1.04 to 1.33), as well as higher odds of focal segmental glomerulosclerosis (adjusted odds ratio, 1.61; 95% CI, 1.04 to 2.48). The inclusion of covariates did not modify the association of monoallelic and biallelic APOLI variants with CKD or focal segmental glomerulosclerosis. CONCLUSIONS In this study, monoallelic APOLI variants were associated with 18% higher odds of CKD and 61% higher odds of focal segmental glomerulosclerosis; biallelic APOL1 vari- ants were associated with 25% higher odds of CKD and 84% higher odds of focal segmental glomerulosclerosis. [ABSTRACT FROM AUTHOR]
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- 2025
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31. For the patient. How much salt is used in Ashanti, West Africa?
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Kerry, S. M., Emmett, L., Micah, F. B., Martin-Peprah, R., Antwi, S., Phillips, R. O., Plange-Rhule, J., Eastwood, J. B., and Francesco Paolo Cappuccio
32. Pelvi-Ureteric Junction Obstruction at Red Cross Children's Hospital, Cape Town: a Six Year Review
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Ie, Ocheke, Antwi S, Gajjar P, Mi, Mcculloch, and Peter Nourse
- Abstract
No Abstract.
33. The Africa hepatopancreatobiliary cancer consortium for the study of epidemiology, etiology, pathobiology of liver, biliary tract, and pancreatic cancers in Africa.
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Cooley, M., Asombang, A., Chipaila, J., Nagalo, B.M., Antwi, S., and Roberts, L.
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- 2024
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34. Admixture into and within sub-Saharan Africa
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Angeliki Kerasidou, J O'Brien, Aaron Vanderwal, Christina Hubbart, Alistair Miles, Catherine L. Moyes, A Nyika, Abier Elzein, J Shelton, Spencer Cca., Anthony Enimil, A Diss, C Hughes, Lucas Amenga-Etego, E Somaskantharajah, Ogobara K. Doumbo, Jacob Almagro Garcia, Valentina D. Mangano, E Drury, Edith Bougama, Angie Green, Busby Gbj., Geraldine M. Clarke, Dominic P. Kwiatkowski, Jiannis Ragoussis, Alphaxard Manjurano, Bronwyn MacInnis, Tobias O. Apinjoh, D Mead, Gareth Maslen, George B.J. Busby, Kirk A. Rockett, Dushyanth Jyothi, C Potter, C Malangone, Muminatou Jallow, I Ragoussis, Ellen M. Leffler, J Rogers, J Stalker, Quang Si Le, J Rodford, D Barnwell, Alieu Mendy, J deVries, Anna E. Jeffreys, Carolyne M. Ndila, E Hilton, Vysaul Nyirongo, The Wellcome Trust Centre for Human Genetics [Oxford], University of Oxford [Oxford], The Wellcome Trust Sanger Institute [Cambridge], Medical Research Council Unit The Gambia (MRC), Centre National de Recherche et de Formation sur le Paludisme [Ouagadougou, Burkina Faso] (CNRFP), Università degli Studi di Roma 'La Sapienza' = Sapienza University [Rome], Navrongo Health Research Centre [Navrongo, Ghana] (NHRC), Komfo Anokye Teaching Hospital, University of Buéa, KEMRI-Wellcome Trust Research Programme (KWTRP), London School of Hygiene and Tropical Medicine (LSHTM), University of Malawi, University of Bamako [Mali], Institut Pasteur de Dakar, Réseau International des Instituts Pasteur (RIIP), Wellcome Trust, Medical Research Council, Foundation for the National Institutes of Health, Malaria Genomics Epidemiology Network : Vanderwal A, Elzein A, Nyika A, Mendy A, Miles A, Diss A, Kerasidou A, Green A, Jeffreys AE, MacInnis B, Hughes C, Moyes C, Spencer CC, Hubbart C, Malangone C, Potter C, Mead D, Barnwell D, Kwiatkowski DP, Jyothi D, Drury E, Somaskantharajah E, Hilton E, Leffler E, Maslen G, Band G, Busby G, Clarke GM, Ragoussis I, Garcia JA, Rogers J, deVries J, Shelton J, Ragoussis J, Stalker J, Rodford J, O'Brien J, Evans J, Rowlands K, Cook K, Fitzpatrick K, Kivinen K, Small K, Johnson KJ, Rockett KA, Hart L, Manske M, McCreight M, Stevens M, Pirinen M, Hennsman M, Parker M, SanJoaquin M, Seplúveda N, Cook O, Miotto O, Deloukas P, Craik R, Wrigley R, Watson R, Pearson R, Hutton R, Oyola S, Auburn S, Shah S, Le SQ, Molloy S, Bull S, Campino S, Clark TG, Ruano-Rubio V, Cornelius V, Teo YY, Corran P, Silva ND, Risley P, Doyle A, Evans J, Horstmann R, Plowe C, Duffy P, Carucci D, Gottleib M, Tall A, Ly AB, Dolo A, Sakuntabhai A, Puijalon O, Bah A, Camara A, Sadiq A, Khan AA, Jobarteh A, Mendy A, Ebonyi A, Danso B, Taal B, Casals-Pascual C, Conway DJ, Onykwelu E, Sisay-Joof F, Sirugo G, Kanyi H, Njie H, Obu H, Saine H, Sambou I, Abubakar I, Njie J, Fullah J, Jaiteh J, Bojang KA, Jammeh K, Sabally-Ceesay K, Manneh L, Camara L, Yamoah L, Njie M, Njie M, Pinder M, Jallow M, Aiyegbo M, Jasseh M, Keita ML, Saidy-Khan M, Jallow M, Ceesay N, Rasheed O, Ceesay PL, Esangbedo P, Cole-Ceesay R, Olaosebikan R, Correa S, Njie S, Usen S, Dibba Y, Barry A, Djimdé A, Sall AH, Abathina A, Niangaly A, Dembele A, Poudiougou B, Diarra E, Bamba K, Thera MA, Doumbo O, Toure O, Konate S, Sissoko S, Diakite M, Konate AT, Modiano D, Bougouma EC, Bancone G, Ouedraogo IN, Simpore J, Sirima SB, Mangano VD, Troye-Blomberg M, Oduro AR, Hodgson AV, Ghansah A, Nkrumah F, Atuguba F, Koram KA, Amenga-Etego LN, Wilson MD, Ansah NA, Mensah N, Ansah PA, Anyorigiya T, Asoala V, Rogers WO, Akoto AO, Ofori AO, Enimil A, Ansong D, Sambian D, Asafo-Agyei E, Sylverken J, Antwi S, Agbenyega T, Orimadegun AE, Amodu FA, Oni O, Omotade OO, Amodu O, Olaniyan S, Ndi A, Yafi C, Achidi EA, Mbunwe E, Anchang-Kimbi J, Mugri R, Besingi R, Apinjoh TO, Titanji V, Elhassan A, Hussein A, Mohamed H, Elhassan I, Ibrahim M, Kokwaro G, Oluoch T, Macharia A, Ndila CM, Newton C, Opi DH, Kamuya D, Bauni E, Marsh K, Peshu N, Molyneux S, Uyoga S, Williams TN, Marsh V, Manjurano A, Nadjm B, Maxwell C, Drakeley C, Riley E, Mtei F, Mtove G, Wangai H, Reyburn H, Joseph S, Ishengoma D, Lemnge M, Mutabingwa T, Makani J, Cox S, Phiri A, Munthali A, Kachala D, Njiragoma L, Molyneux ME, Moore M, Ntunthama N, Pensulo P, Taylor T, Nyirongo V, Carter R, Fernando D, Karunaweera N, Dewasurendra R, Suriyaphol P, Singhasivanon P, Simmons CP, Thai CQ, Sinh DX, Farrar J, Chuong LV, Phu NH, Hieu NT, Hoang Mai NT, Ngoc Quyen NT, Day N, Dunstan SJ, O'Riordan SE, Hong Chau TT, Hien TT, Allen A, Lin E, Karunajeewa H, Mueller I, Reeder J, Manning L, Laman M, Michon P, Siba P, Allen S, Davis TM., Commission of the European Communities, and Wellcome Trust
- Subjects
0301 basic medicine ,Population genetics ,Gene flow ,0302 clinical medicine ,MESH: Genetic Variation ,Biology (General) ,African Continental Ancestry Group ,media_common ,Genetics ,0303 health sciences ,education.field_of_study ,Human migration ,General Neuroscience ,030305 genetics & heredity ,General Medicine ,[SDV.BIBS]Life Sciences [q-bio]/Quantitative Methods [q-bio.QM] ,Geography ,Genomics and Evolutionary Biology ,MESH: Human Migration ,[SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology ,Medicine ,admixture ,gene-flow ,Research Article ,Gene Flow ,QH301-705.5 ,Science ,media_common.quotation_subject ,Human Migration ,Population ,Black People ,Genomics ,Biology ,africa ,chromosome painting ,evolutionary biology ,genomics ,human ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,Genetic variation ,Humans ,[SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology ,MESH: Africa South of the Sahara ,Allele ,education ,Africa South of the Sahara ,MESH: Gene Flow ,MESH: Genome, Human ,030304 developmental biology ,Genetic diversity ,MESH: Humans ,[SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] ,General Immunology and Microbiology ,business.industry ,Genome, Human ,Haplotype ,Genetic Variation ,MESH: Haplotypes ,030104 developmental biology ,Genetic epidemiology ,Haplotypes ,[SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics ,Agriculture ,Evolutionary biology ,Africa ,[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie ,MESH: African Continental Ancestry Group ,[INFO.INFO-BI]Computer Science [cs]/Bioinformatics [q-bio.QM] ,business ,030217 neurology & neurosurgery ,Demography ,Diversity (politics) - Abstract
Similarity between two individuals in the combination of genetic markers along their chromosomes indicates shared ancestry and can be used to identify historical connections between different population groups due to admixture. We use a genome-wide, haplotype-based, analysis to characterise the structure of genetic diversity and gene-flow in a collection of 48 sub-Saharan African groups. We show that coastal populations experienced an influx of Eurasian haplotypes over the last 7000 years, and that Eastern and Southern Niger-Congo speaking groups share ancestry with Central West Africans as a result of recent population expansions. In fact, most sub-Saharan populations share ancestry with groups from outside of their current geographic region as a result of gene-flow within the last 4000 years. Our in-depth analysis provides insight into haplotype sharing across different ethno-linguistic groups and the recent movement of alleles into new environments, both of which are relevant to studies of genetic epidemiology. DOI: http://dx.doi.org/10.7554/eLife.15266.001, eLife digest Our genomes contain a record of historical events. This is because when groups of people are separated for generations, the DNA sequence in the two groups’ genomes will change in different ways. Looking at the differences in the genomes of people from the same population can help researchers to understand and reconstruct the historical interactions that brought their ancestors together. The mixing of two populations that were previously separate is known as admixture. Africa as a continent has few written records of its history. This means that it is somewhat unknown which important movements of people in the past generated the populations found in modern-day Africa. Busby et al. have now attempted to use DNA to look into this and reconstruct the last 4000 years of genetic history in African populations. As has been shown in other regions of the world, the new analysis showed that all African populations are the result of historical admixture events. However, Busby et al. could characterize these events to unprecedented level of detail. For example, multiple ethnic groups from The Gambia and Mali all show signs of sharing the same set of ancestors from West Africa, Europe and Asia who mixed around 2000 years ago. Evidence of a migration of people from Central West Africa, known as the Bantu expansion, could also be detected, and was shown to carry genes to the south and east. An important next step will be to now look at the consequences of the observed gene-flow, and ask if it has contributed to spreading beneficial, or detrimental, mutations around Africa. DOI: http://dx.doi.org/10.7554/eLife.15266.002
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- 2016
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35. Detect early, protect kidney health: World Kidney Day 2025.
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Waith FM, Bresolin NL, and Antwi S
- Abstract
Competing Interests: Declarations. Conflict of interest: The authors declare no competing interests.
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- 2025
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36. Disaster preparedness and kidney health in children.
- Author
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Bonilla-Felix M, Raina R, Düzova A, Sinha R, Antwi S, Bjornstad EC, and Ishikura K
- Abstract
Disasters pose significant risks to vulnerable populations, particularly children with chronic health conditions such as kidney disease. This paper explores the unique challenges faced by children with kidney disease during and after disasters, focusing on disruptions to essential medical services such as dialysis, access to clean water, and maintenance medications. The vulnerability of these children is further amplified in low-resource settings, where disaster preparedness is often lacking. We present strategies for improving disaster preparedness, including early dialysis initiation, patient and family education, and securing reliable access to medical supplies and treatment facilities. Ensuring the resilience of health systems and comprehensive disaster planning are crucial to safeguarding the health of this at-risk population during emergency situations., Competing Interests: Declarations. Conflict of interest: The authors declare no competing interests., (© 2025. The Author(s), under exclusive licence to International Pediatric Nephrology Association.)
- Published
- 2025
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37. Barriers to orthodox medical care of prostate cancer in Ghana.
- Author
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Maison POM, Arkoh P, Sani A, Mensah-Baidoo EE, Owusu G, Danso EY, Koufie NB, Andzie S, Gyamfi P, Omane E, Antwi S, Palanisamy N, Hwang C, Walker E, Ofori Aboah V, and Jiagge EM
- Subjects
- Male, Humans, Ghana, Middle Aged, Aged, Cross-Sectional Studies, Prospective Studies, Medicine, African Traditional methods, Health Knowledge, Attitudes, Practice, Surveys and Questionnaires, Prostate-Specific Antigen blood, Adult, Patient Acceptance of Health Care, Prostatic Neoplasms therapy, Prostatic Neoplasms diagnosis
- Abstract
Traditional medicine is widely used in sub-Saharan Africa, particularly in Ghana, where it is commonly integrated with modern orthodox medicine. This study examines the barriers that delay the pursuit of orthodox medical care for prostate cancer (PCa) in Ghana's Central region, where a blend of traditional and modern orthodox medicine exists. The preference for indigenous traditional medicine often results in late-stage presentations of PCa, adversely affecting patient outcomes. This prospective cross-sectional study was conducted from July to December 2022 at the Cape Coast Teaching Hospital (CCTH) and in four local communities. We investigated why men prefer traditional over orthodox medicine and identified cultural beliefs, attitudes, and gaps in health awareness that contribute to delays in diagnosing and treating PCa. The study involved administering questionnaires, providing education on PCa, and conducting free prostate-specific antigen (PSA) screening. Ethical approval was obtained from the Ethics Research Committee of the Ghana Health Service. A total of 282 patients participated, including 268 men from the communities and 14 diagnosed with PCa at CCTH after initially consulting traditional healers. Of the community-recruited patients who underwent PSA testing, 26% had elevated PSA levels and underwent further diagnostic procedures. Ultimately, nine of 268 community patients were confirmed to have PCa. Most patients (57.4%) had limited education, which correlated with late presentations and various misconceptions about PCa. The study highlights significant cultural and economic barriers that lead to the late-stage presentation of PCa among men in Ghana's Central region. There is a critical need for a culturally sensitive, multi-pronged strategy that enhances public education about the benefits of early diagnosis and fosters collaboration between traditional healers and orthodox healthcare providers to improve prostate cancer outcomes in Ghana., Competing Interests: Declarations. Competing interests: The authors declare no competing interests. Ethical approval: Ethical approval for this study was obtained from the Ethics Research Committee of the Ghana Health Service., (© 2025. The Author(s).)
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- 2025
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38. Cancer clinical trial participation: a qualitative study of Black/African American communities' and patient/survivors' recommendations.
- Author
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Kaljee L, Antwi S, Dankerlui D, Harris D, Israel B, White-Perkins D, Ofori Aboah V, Aduse-Poku L, Larrious-Lartey H, Brush B, Coombe C, Patman L, Cawthorne N, Chue S, Rowe Z, Mills C, Fernando K, Daniels G, Walker EM, and Jiagge E
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- Humans, Female, Male, Middle Aged, Adult, Healthcare Disparities ethnology, Aged, Patient Selection, Patient Participation, Michigan, White, Focus Groups, Black or African American, Neoplasms ethnology, Community-Based Participatory Research, Qualitative Research, Clinical Trials as Topic, Trust, Racism
- Abstract
Background: Black/African Americans experience disproportionate cancer burden and mortality rates. Racial and ethnic variation in cancer burden reflects systemic and health-care inequities, cancer risk factors, and heredity and genomic diversity. Multiple systemic, sociocultural, economic, and individual factors also contribute to disproportionately low Black/African American participation in cancer clinical trials., Methods: The Participatory Action for Access to Clinical Trials project used a community-based participatory research approach inclusive of Black/African American community-based organizations, Henry Ford Health, and the University of Michigan Urban Research Center. The project aims were to understand Black/African Americans' behavioral intentions to participate in cancer clinical trials and to obtain recommendations for improving participation. Audio-recorded focus group data were transcribed and coded, and searches were conducted to identify themes and subthemes. Representative text was extracted from the transcripts., Results: Six community focus group discussions (70 participants) and 6 Henry Ford Health patient/survivor focus group discussions (29 participants) were completed. General themes related to trial participation were identified, including (1) systemic issues related to racism, health disparities, and trust in government, health systems, and clinical research; (2) firsthand experiences with health care and health systems; (3) perceived and experienced advantages and disadvantages of clinical trial participation; and (4) recruitment procedures and personal decision-making processes. Specific recommendations on how to address barriers were obtained., Conclusions: Community-based participatory research is effective in bringing communities equitably to the table. To build trust, health systems must provide opportunities for patients and communities to jointly identify factors affecting cancer clinical trial participation, implement recommendations, and address health disparities., (© The Author(s) 2024. Published by Oxford University Press.)
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- 2025
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39. Analgesic and anti-inflammatory activities of NPK 500 capsules, a Cassia sieberiana DC. - Based herbal analgesic medicine used to treat dysmenorrhea and peptic ulcer, is mediated through the inhibition of PGE2 and iNOS.
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Kumatia EK, Antwi S, and Asase A
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- Animals, Female, Mice, Rats, Capsules, Carrageenan, Cyclooxygenase 2 metabolism, Edema drug therapy, Edema chemically induced, Plant Extracts pharmacology, Plant Extracts chemistry, Plant Extracts therapeutic use, Rats, Sprague-Dawley, Analgesics pharmacology, Analgesics therapeutic use, Analgesics chemistry, Anti-Inflammatory Agents pharmacology, Anti-Inflammatory Agents therapeutic use, Cassia chemistry, Dinoprostone metabolism, Dysmenorrhea drug therapy, Dysmenorrhea chemically induced, Nitric Oxide Synthase Type II metabolism
- Abstract
Ethnopharmacological Relevance: Pain and inflammation are the most frequent reasons for which people seek medical care. Currently available analgesics against these conditions produce fatal adverse effects. NPK 500 capsules is an alternative herbal analgesic employed to treat dysmenorrhea, peptic ulcer and pain. NPK 500 is produced from Cassia sieberiana. A plant used in traditional medicine to treat pain and inflammation., Aim of the Study: This study reports the analysis, phytochemical characterization and mechanism of analgesic and anti-inflammatory activities of two NPK 500 capsules, called old and new NPK500 capsules (ONPK500 and NNPK500) respectively., Materials and Methods: Physicochemical, organoleptic, GC-MS and LC-MS methods were employed to analyze the NPK 500 capsules. Analgesic activity was evaluated using tail immersion, Randall-Selitto and acetic acid induced writing tests. Anti-inflammatory activity was evaluated using carrageenan-induced rat paw inflammation. Additionally, pro-inflammatory mediators such as prostaglandin E2 (PGE2), inducible nitric oxide synthase (iNOS), cyclooxygenase 1 and 2 (COX-2 and COX-1) were quantified in the sera of the rats using Enzyme Linked Immunosorbent Assay (ELISA) kits., Results: Thirteen major compounds were characterized in the NNPK 500 capsules via the GC-MS and LC-MS spectroscopies. Kaempferol was the major compound characterized in addition to physcion, β-sitosterol 3-O-β-D-glucopyranoside, betulinic acid and nine others. Physicochemical and organoleptic indices of the capsules were also derived for its authentication and quality control. Furthermore, NNPK 500 0.5-1.5 mg/kg p.o. produce significant (P < 0.5) analgesic activity (160-197%) higher than that of ONPK500 (109.8%) and Morphine (101%) in the tail immersion test. The analgesic activity of NNPK 500 0.5-1.5 mg/kg p.o. (171.0-258.3%) and ONPK 500 (179.5%) were also significant (P < 0.01) and higher than that of Aspirin (103.00%) in the Randall-Selitto test. Both capsules also demonstrated significant (P < 0.5) analgesic and anti-inflammatory activities in the acetic acid-induced writhing and carrageenan-indued paw edema tests respectively. The two NPK500 capsules also, significantly (P < 0.5) inhibited PGE2 and iNOS but not COX-2 and COX-1 in the carrageenan-indued paw edema test., Conclusion: These results show that NNPK 500 and ONPK 500 capsules possessed potent analgesic and anti-inflammatory activities via inhibition of PGE2 and iNOS as a result of their chemical constituents. NPK500 capsules thus, relief acute pain and inflammation without causing gastrointestinal, renal or hepatic injuries, since they did not inhibit COX-1., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)
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- 2024
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40. Structures, Organization, and Delivery of Kidney Care to Children Living in Low-Resource Settings.
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Kamath N, Erickson RL, Hingorani S, Bresolin N, Duzova A, Lungu A, Bjornstad EC, Prasetyo R, Antwi S, Safouh H, Montini G, and Bonilla-Félix M
- Abstract
Introduction: There is a disparity in the availability of health care for children in resource-constrained countries. The International Pediatric Nephrology Association (IPNA) commissioned an initiative exploring the challenges in the care of children with kidney disease in low- or middle-income countries (LMICs) with a focus on human, diagnostic, and therapeutic resources., Methods: A survey was sent by e-mail to all members of IPNA and its affiliated regional or national societies residing in LMICs. Data were extracted from individual responses after merging duplicate data. Descriptive analysis was done using Microsoft Excel., Results: Responses were obtained from 245 centers across 62 countries representing 88% of the LMIC pediatric population. Regional disparity in the availability of basic diagnostic and therapeutic resources was noted. Even when resources were available, they were not accessible or affordable in 15% to 20% of centers. Acute and chronic dialysis were available in 85% and 75% of centers respectively. Lack of trained nurses, pediatric-specific supplies, and high costs were barriers to providing dialysis in these regions. Kidney transplantation was available in 32% of centers, with the cost of transplantation and lack of surgical expertise reported as barriers. About 65% of centers reported that families with chronic disease opted to discontinue care, with financial burden as the most common reason cited., Conclusion: The survey highlights the existing gaps in workforce, diagnostic, and therapeutic resources for pediatric kidney care in resource-constrained regions. We need to strengthen the health care workforce, address disparities in health care resources and funding, and advocate for equitable access to medications, and kidney replacement therapy (KRT)., (© 2024 International Society of Nephrology. Published by Elsevier Inc.)
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- 2024
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41. Acute and Subchronic Toxicity Assessment of Conventional Soxhlet Cymbopogon citratus Leaves Extracts in Sprague-Dawley Rats.
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Ayembilla JA, Khalid AR, Abubakari SB, Adams AR, Botchway FA, Antwi S, Otu PNY, Appiah M, Osei-Adjei G, Kottoh KO, Ahiabenu-Williams P, and Quasie O
- Abstract
Background: In Ghana, Cymbopogon citratus leaves together with guava, pawpaw, and lime are processed into a decoction to treat fever. To encourage its usage, preclinical validation of the safety profile of the plant is required. The acute and subchronic toxicities of the conventional Soxhlet ethanolic Cymbopogon citratus leaves extract in Sprague-Dawley rats were investigated., Methods: Pulverized Cymbopogon citratus leaves were extracted with 98% ethanol using the conventional Soxhlet extraction (CSE) method and dried. In the acute toxicity study, a single dose of 5000 mg/kg body weight was administered to six female Sprague-Dawley rats and 1 ml/100 g body weight normal saline to control (6) once, and signs of toxicity were observed every hour for the first 12 hr, 24 hr, and 48 hr through to 14 days. In the subchronic study, the treatment groups were administered 200 mg/kg, 600 mg/kg, and 1200 mg/kg, respectively, of the CSE C. citratus leaves extract for six weeks. Analyses were conducted on the blood, urine, and serum samples of the rats. Histopathological examination of the liver, heart, kidney, spleen, and lungs was carried out at termination. Analysis of variance (ANOVA) was performed to determine statistically significant differences between the test and control rats at P < 0.05., Results: The results revealed that there were no statistically significant differences ( p > 0.05) in the urinalysis and haematological analysis between control and test rats over the treatment period. Similarly, CSE C. citratus leaves extract did not induce any significant biochemical changes in the treatment group; however, there was a weight loss effect on the treated rats. There were no noticeable morphological changes in the heart, liver, spleen, lung, and kidney of the test rats compared to the control., Conclusion: CSE ethanolic C. citratus leaves extract has a weight loss effect, and long-term administration of the extract may not cause any organ-specific toxicity to the consumers., Competing Interests: The authors declare that they have no conflicts of interest., (Copyright © 2023 Jacob Apibilla Ayembilla et al.)
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- 2023
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42. Pediatric HIV Disclosure Intervention Improves Immunologic Outcome at 48 Weeks: The Sankofa Trial Experience.
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Shabanova V, Emuren L, Gan G, Antwi S, Renner L, Amissah K, Kusah JT, Lartey M, Reynolds NR, and Paintsil E
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- Child, Adolescent, Humans, Disclosure, Ghana epidemiology, Viral Load, Prevalence, HIV Infections
- Abstract
Background: The World Health Organization recommends disclosure of HIV status to children and adolescents living with HIV (CALWH). HIV disclosure improves adherence to antiretroviral therapy and immunologic and virologic outcomes. However, the prevalence of HIV disclosure is low in sub-Saharan Africa. We assessed the longitudinal effect of the Sankofa Pediatric HIV disclosure intervention on immunologic and virologic outcomes among CALWH in Ghana., Methods: We conducted a secondary analysis of a two-arm site-randomized clinical trial among CALWH aged 7-18 years. Data were collected at baseline, 24, and 48 weeks. Generalized linear mixed models were used to compare immunologic (CD4) and virologic (viral load) outcomes as both continuous and categorical variables by disclosure status and by intervention group., Results: Among participants who had their HIV status disclosed during this study, the proportion with CD4 percent >25% increased from 56.5% at baseline to 75.4% at week 48 ( P = 0.03), with a slight increase in the undisclosed group (69.5% vs. 74.3%, P = 0.56). In the intervention arm, there was a steady increase in proportion with CD4 percent >25% from 47.1% at baseline to 67.8% at week 48 ( P = 0.01) while it remained unchanged in the control arm (80.5% vs. 81.3% [ P = 0.89]). Concurrently, declines in detectable viral load were observed in both disclosed (63.3% vs. 51.5%, P = 0.16) and undisclosed (69.9% vs. 62.0%, P = 0.17) groups while the intervention group experienced a meaningful drop from 72.9% to 57.6% at 24 weeks ( P = 0.04), which was maintained at 48 weeks., Conclusions: A structured, culturally relevant disclosure intervention can improve clinical outcomes., Competing Interests: The authors have no funding or conflicts of interest to disclose., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2023
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43. Global Dialysis Perspective: Ghana.
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Tannor EK and Antwi S
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- Ghana epidemiology, Renal Dialysis
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- 2023
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44. Effect of HIV infection on plasma exposure to first-line TB drugs and target attainment in children.
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Yang H, Antwi S, Maranchick N, Dompreh A, Amissah AK, Sly-Moore E, Martyn-Dickens C, Opoku T, Enimil A, Bosomtwe D, Ojewale O, Sarfo AD, Appiah AF, Kusi-Amponsah I, Dong SK, Osei Kuffour B, Morgan R, Alshaer MH, Peloquin CA, and Kwara A
- Subjects
- Child, Humans, Child, Preschool, Antitubercular Agents, Isoniazid therapeutic use, Pyrazinamide therapeutic use, HIV Infections drug therapy, HIV Infections epidemiology, HIV Infections complications, Tuberculosis drug therapy, Tuberculosis epidemiology, Coinfection drug therapy
- Abstract
BACKGROUND: Whether HIV infection adversely affects exposure to first-line TB drugs in children is debatable. It is also not known whether HIV infection increases the risk of plasma underexposure or overexposure to TB drugs. This study sought to address these questions. DESIGN/METHODS: Children on TB treatment were enrolled. After 4 weeks on therapy, blood samples were collected at pre-dose, 1, 2, 4, 8, and 12 h post-dose for pharmacokinetic analysis. Plasma drug exposure below and above the lower and upper bounds of the 95% confidence intervals of the reference mean for children were considered underexposure and overexposure, respectively. The effect of HIV infection on drugs exposure and risk of underexposure were examined using multivariate analysis. RESULTS: Of 86 participants (median age: 4.9 years), 45 had HIV coinfection. HIV coinfection was associated with lower pyrazinamide (PZA) and ethambutol exposures in adjusted analysis. Patients with TB-HIV coinfection were three times more likely to have PZA underexposure than those with TB only. Underexposure of rifampin was common irrespective of HIV coinfection status. CONCLUSIONS: HIV coinfection was associated with a higher risk for PZA underexposure in children. This effect should be accounted for in models and simulations to determine optimal PZA dose for children.
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- 2023
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45. Pediatric nephrology in under-resourced areas: one pill will not cure all ills-economics and awareness are both important factors.
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Banerjee S, Kamath N, Antwi S, and Bonilla-Felix M
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- Child, Humans, Pediatrics, Health Resources, Nephrology
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- 2023
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46. Pharmacokinetics and pharmacodynamics of adult dolutegravir tablets in treatment-experienced children with HIV weighing at least 20 kg.
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Martyn-Dickens C, Ojewale O, Sly-Moore E, Dompreh A, Enimil A, Amissah AK, Bosomtwe D, Frimpong Appiah A, Sarfo AD, Opoku T, Asiedu P, Dong SK, Kusi-Amponsah I, Maranchick N, Peloquin CA, Antwi S, and Kwara A
- Subjects
- Male, Adult, Humans, Child, Female, Prospective Studies, Oxazines therapeutic use, Heterocyclic Compounds, 3-Ring, Pyridones therapeutic use, Tablets therapeutic use, Viral Load, HIV Infections drug therapy, HIV-1, Anti-HIV Agents therapeutic use
- Abstract
Objective: Limited pharmacokinetic/pharmacodynamic data are a barrier to the scale-up of dolutegravir-based antiretroviral therapy (ART) in children. We examined the pharmacokinetics/pharmacodynamics of the adult film-coated dolutegravir 50 mg tablets in children with HIV infection weighing at least 20 kg., Design: A prospective, observational, pharmacokinetic, and safety study., Methods: Treatment-experienced children with HIV weighing at least 20 kg and evidence of viral load suppression on ART were enrolled and switched to dolutegravir-based therapy. After at least 4 weeks and 7 months on dolutegravir-based therapy, blood samples were collected at 0, 1, 4, 8, 12, and 24-h postdose. Dolutegravir concentrations were measured using validated LCMS/MS and pharmacokinetic parameters calculated by noncompartmental analysis. Descriptive statistics were used to summarize pharmacokinetic parameters and comparisons with published reference values., Results: Of 25 participants, 92% were on efavirenz-based ART and 60.0% were men. Dolutegravir mean exposure, peak and trough concentrations at both pharmacokinetic visits were higher than the mean reference values in adults and children weighing 20 kg to less than 40 kg treated with 50 mg once daily, but were closer to the mean values in adults given 50 mg twice a day. Children weighing 20 kg to less than 40 kg had even higher dolutegravir exposures. The regimens were well tolerated with good virologic efficacy through week 48., Conclusion: The higher dolutegravir exposure in our study population suggests that further studies and close monitoring should investigate the adverse effects of dolutegravir in more children and in the long term., (Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2023
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47. Pilot Study: Personalized Medicine in Endoscopy, Can Pharmacogenomics Predict Response to Conscious Sedation?
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Zaver HB, Ghoz H, Malviya B, Bali A, Antwi S, Moyer AM, and Bi Y
- Abstract
Background: Adequate response to moderate (conscious) sedation varies significantly between individuals. Polymorphisms in genes encoding drug metabolizing enzymes can lead to inter-individual variability in drug efficacy, potentially influencing sedation requirements during endoscopic procedures., Objectives: The aim of this study was to assess the potential role of inter-individual variation in inherited polymorphisms of drug-metabolizing enzymes, cytochrome P450 (CYP450), specifically CYP3A4 and CYP3A5 , in sedation requirements for outpatient endoscopic procedures., Methods: A retrospective analysis of sedation requirements and pharmacogenomics data in 106 unique patients who received outpatient esophagogastroduodenoscopy (EGD), colonoscopy, or both between December 2011 and February 2019 was conducted. Patients were divided into two groups based on their sedation requirements during endoscopy (high vs. normal sedation)., Results: Patients with reduced a CYP2C19 metabolism (poor + intermediate metabolizers) (odds ratio [OR] = 0.38, 95% confidence interval [CI]: 0.16-0.91, p = 0.03), poor CYP3A5 metabolism (OR = 0.25, 95% CI: 0.095-0.65, p = 0.0046), and poor UGT1A1 (OR = 2.76, 95% CI: 1.07-7.13, p = 0.08) had higher odds of requiring normal sedation compared to those with CYP2C19 increased metabolism, CYP3A5 intermediate metabolism, and UGT1A1 intermediate metabolism., Conclusion: Information about inter-individual variation in (CYP450) genes may be useful for determining the sedation requirements for outpatient endoscopic procedures. We found that patients with reduced CYP2C19 metabolism, poor CYP3A5 metabolism, and poor UGT1A1 metabolism were more likely to require normal sedation requirements during outpatient endoscopic procedures.
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- 2023
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48. Global estimates and determinants of antituberculosis drug pharmacokinetics in children and adolescents: a systematic review and individual patient data meta-analysis.
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Gafar F, Wasmann RE, McIlleron HM, Aarnoutse RE, Schaaf HS, Marais BJ, Agarwal D, Antwi S, Bang ND, Bekker A, Bell DJ, Chabala C, Choo L, Davies GR, Day JN, Dayal R, Denti P, Donald PR, Engidawork E, Garcia-Prats AJ, Gibb D, Graham SM, Hesseling AC, Heysell SK, Idris MI, Kabra SK, Kinikar A, Kumar AKH, Kwara A, Lodha R, Magis-Escurra C, Martinez N, Mathew BS, Mave V, Mduma E, Mlotha-Mitole R, Mpagama SG, Mukherjee A, Nataprawira HM, Peloquin CA, Pouplin T, Ramachandran G, Ranjalkar J, Roy V, Ruslami R, Shah I, Singh Y, Sturkenboom MGG, Svensson EM, Swaminathan S, Thatte U, Thee S, Thomas TA, Tikiso T, Touw DJ, Turkova A, Velpandian T, Verhagen LM, Winckler JL, Yang H, Yunivita V, Taxis K, Stevens J, and Alffenaar JC
- Subjects
- Child, Adolescent, Humans, Child, Preschool, Pyrazinamide therapeutic use, Ethambutol therapeutic use, Rifampin therapeutic use, Antitubercular Agents therapeutic use, Isoniazid therapeutic use
- Abstract
Background: Suboptimal exposure to antituberculosis (anti-TB) drugs has been associated with unfavourable treatment outcomes. We aimed to investigate estimates and determinants of first-line anti-TB drug pharmacokinetics in children and adolescents at a global level., Methods: We systematically searched MEDLINE, Embase and Web of Science (1990-2021) for pharmacokinetic studies of first-line anti-TB drugs in children and adolescents. Individual patient data were obtained from authors of eligible studies. Summary estimates of total/extrapolated area under the plasma concentration-time curve from 0 to 24 h post-dose (AUC
0-24 ) and peak plasma concentration ( Cmax ) were assessed with random-effects models, normalised with current World Health Organization-recommended paediatric doses. Determinants of AUC0-24 and Cmax were assessed with linear mixed-effects models., Results: Of 55 eligible studies, individual patient data were available for 39 (71%), including 1628 participants from 12 countries. Geometric means of steady-state AUC0-24 were summarised for isoniazid (18.7 (95% CI 15.5-22.6) h·mg·L-1 ), rifampicin (34.4 (95% CI 29.4-40.3) h·mg·L-1 ), pyrazinamide (375.0 (95% CI 339.9-413.7) h·mg·L-1 ) and ethambutol (8.0 (95% CI 6.4-10.0) h·mg·L-1 ). Our multivariate models indicated that younger age (especially <2 years) and HIV-positive status were associated with lower AUC0-24 for all first-line anti-TB drugs, while severe malnutrition was associated with lower AUC0-24 for isoniazid and pyrazinamide. N -acetyltransferase 2 rapid acetylators had lower isoniazid AUC0-24 and slow acetylators had higher isoniazid AUC0-24 than intermediate acetylators. Determinants of Cmax were generally similar to those for AUC0-24 ., Conclusions: This study provides the most comprehensive estimates of plasma exposures to first-line anti-TB drugs in children and adolescents. Key determinants of drug exposures were identified. These may be relevant for population-specific dose adjustment or individualised therapeutic drug monitoring., Competing Interests: Conflict of interest: H.S. Schaaf reports grants from the NIH/IMPAACT; and honoraria from Ann Lake publications (sponsored by Johnson & Johnson) for an educational publication on the management of MDR-TB in children. A. Bekker reports grants from IMPAACT, UNITAID; lecture honoraria from Sandoz; support for attending PENTA PIM meeting; and received generic LPV/r, 3TC and ABC for the PETITE study. D.J. Bell reports support for attending a meeting from ViiV pharmaceuticals; and attendance fees for an advisory board meeting from ViiV pharmaceuticals. L. Choo reports grants from the UKRI MRC DFID Wellcome NIHR Joint Global Health Trials, TB Alliance Support for trial drug purchase and UKRI COVID-19 Grant Extension Allocation Award. P. Denti reports a grant for WHO expert review for TB drugs in children. S.M. Graham reports participation on a data safety monitoring board for the TB CHAMP trial; and leadership roles as a co-chair for the Guidelines Development Committee of the WHO updated recommendations and consolidated guidelines on child and adolescent TB, and as a core member for the WHO Child and Adolescent TB Working Group. S.K. Heysell reports grants from the NIH, DANIDA and EDTCP; royalties or licences from UpToDate; and honoraria for lectures from Henry Stewart Talks. A. Kwara reports a grant from the NIH/NICHD. V. Mave reports grants from the NIH and CDC. C.A. Peloquin reports a grant from the NIH. V. Roy reports a grant from the Delhi State TB Association; and leadership roles as a member of the Delhi State TB Association and the MAMC TB Committee. E.M. Svensson reports grants from the NWO personal Veni, IMI UNITE4TB consortium, TB Alliance, UNITAID BenefitKids consortium, WHO expert review, NIH support for IMPAACT studies, Blueprint, Probex, ACTG study Clo-FAST, Janssen Pharmaceuticals, EDCTP support PanTB-HM and Legochem; and leadership or fiduciary roles in the ISOP DI&E committee and BenNeLux PMX organising committee. U. Thatte reports participation on a data safety monitoring board for an ICMR TB trial. T.A. Thomas reports grants from the NIH and the University of Virginia. D.J. Touw reports a grant from Chiesi; consulting fees from Pure IMS and Sanguin; and participation on a data safety monitoring board for the FORMAT trial. A. Turkova reports grants from the UKRI MRC DFID Wellcome NIHR Joint Global Health Trials and MRC Grants for core funding of the Medical Research Council Clinical Trials Unit at the UCL; and TB Alliance Support for SHINE trial drug purchase. All of this work was declared by the authors to be outside the submitted work. All other authors declare no competing interests., (Copyright ©The authors 2023.)- Published
- 2023
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49. Urine-Based Detection of Biomarkers Indicative of Chronic Kidney Disease in a Patient Cohort from Ghana.
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Wruck W, Boima V, Erichsen L, Thimm C, Koranteng T, Kwakyi E, Antwi S, Adu D, and Adjaye J
- Abstract
Chronic kidney disease (CKD) is a global health burden with a continuously increasing prevalence associated with an increasing incidence of diabetes and hypertension in aging populations. CKD is characterized by low glomerular filtration rate (GFR) and other renal impairments including proteinuria, thus implying that multiple factors may contribute to the etiology this disease. While there are indications of ethnic differences, it is hard to disentangle these from confounding social factors. Usually, CKD is detected in later stages of the disease when irreversible renal damage has already occurred, thus suggesting a need for early non-invasive diagnostic markers. In this study, we explored the urine secretome of a CKD patient cohort from Ghana with 40 gender-matched patients and 40 gender-matched healthy controls employing a kidney injury and a more general cytokine assay. We identified panels of kidney-specific cytokine markers, which were also gender-specific, and a panel of gender-independent cytokine markers. The gender-specific markers are IL10 and MME for male and CLU, RETN, AGER, EGFR and VEGFA for female. The gender-independent cytokine markers were APOA1, ANGPT2, C5, CFD, GH1, ICAM1, IGFBP2, IL8, KLK4, MMP9 and SPP1 (up-regulated) and FLT3LG, CSF1, PDGFA, RETN and VEGFA (down-regulated). APOA1-the major component of HDL particles-was up-regulated in Ghanaian CKD patients and its co-occurrence with APOL1 in a subpopulation of HDL particles may point to specific CKD-predisposing APOL1 haplotypes in patients of African descent-this, however, needs further investigation. The identified panels, though preliminary, lay down the foundation for the development of robust CKD-diagnostic assays.
- Published
- 2022
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50. The environmental consequences of foreign aid and key economic indicators: the Sino-Africa perspective.
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Boamah KB, Du J, Mensah IA, Antwi S, Siddique AS, and Doku JN
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- Carbon Dioxide analysis, China, Environmental Pollution, Investments, Morocco, Economic Development, International Cooperation
- Abstract
The study differs substantially from earlier studies, by probing the environmental consequences of foreign aid and selected key economic indicators with a special focus on Sino-Africa. The study focused on China and its top foreign aid recipients in Africa in the last decade. This paper utilizes the Dynamic Augmented Mean Group Estimator (AMG), a robust and recent econometric approach to provide better statistical inferences; crucial for policy formulation and future reforms on foreign aid, trade, energy, pollutions, and economic growth of economies. The findings of the study revealed the China's Foreign aid oriented towards infrastructure has varying impacts on the economic growth and the environment of most recipient African Countries. The findings revealed the incidence of foreign aid ameliorating pollution of the countries: Nigeria and Morocco under strong domestic institutions. The study is of key relevance for policymakers and stakeholders as it explicates the key pillars, policies, and guidelines needed for foreign aid, trade, economic growth, and related internal reforms for mitigating resulting environmental pollution across a wider international context., (© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
- Published
- 2022
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