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1.
Tumour Virus Res ; 15: 200261, 2023 06.
Artigo em Inglês | MEDLINE | ID: mdl-37179021

RESUMO

Human papillomavirus (HPV) E6 and E7 oncogene expression is essential for cervical carcinogenesis. Evidence exists that E6/E7 variants may have different transforming activities while the risk of HPV-16 variants (A/D) differs by race/ethnicity. We determined the type-specific diversity of HPV infection in women with high grade cervical disease or cervical cancer in Ghana and investigated naturally occurring E6/E7 DNA variants in this population. HPV genotyping was carried out on 207 cervical swab samples collected from women referred to a gynaecology clinic at two teaching hospitals in Ghana. HPV-16, HPV-18 and HPV-45 were detected in 41.9%, 23.3% and 16.3% of cases respectively. HPV-16 E6/E7 DNA sequencing was performed in 36 samples. Thirty samples contained E6/E7 variants of the HPV-16-B/C lineage. 21/36 samples were of the HPV-16C1 sublineage variant and all contained the E7 A647G(N29S) single nucleotide polymorphism (SNP). This study reveals the diversity of E6/E7 DNA and the dominance of HPV16 B/C variants in cervicovaginal HPV infection in Ghana. Type-specific HPV diversity analysis indicates that most Ghanaian cervical disease cases are vaccine preventable. The study provides an important baseline from which for the impact of vaccine and antivirals on clinically relevant HPV infection and associated disease can be measured.


Assuntos
Proteínas Oncogênicas Virais , Infecções por Papillomavirus , Humanos , Feminino , Papillomavirus Humano 16/genética , Gana/epidemiologia , Infecções por Papillomavirus/epidemiologia , Proteínas Oncogênicas Virais/genética , Papillomavirus Humano , Proteínas E7 de Papillomavirus/genética , Proteínas Repressoras/genética , Papillomaviridae/genética , DNA , Polimorfismo de Nucleotídeo Único/genética , Genótipo
2.
Pediatr Blood Cancer ; 68(7): e29068, 2021 07.
Artigo em Inglês | MEDLINE | ID: mdl-33890391

RESUMO

BACKGROUND: Early diagnosis of sickle cell disease (SCD) through newborn screening (NBS) is a cost-effective intervention, which reduces morbidity and mortality. In sub-Saharan Africa (SSA) where disease burden is greatest, there are no universal NBS programs and few institutions have the capacity to conduct NBS. We determined the feasibility and challenges of implementing NBS for SCD in Ghana's largest public hospital. PROCEDURE: The SCD NBS program at Korle Bu Teaching Hospital (KBTH) is a multiyear partnership between the hospital and the SickKids Center for Global Child Health, Toronto, being implemented in phases. The 13-month demonstration phase (June 2017-July 2018) and phase one (November 2018-December 2019) focused on staff training and the feasibility of universal screening of babies born in KBTH. RESULTS: During the demonstration phase, 115 public health nurses and midwives acquired competency in heel stick for dried blood spot sampling. Out of 9990 newborns, 4427 babies (44.3%) were screened, of which 79 (1.8%) were identified with presumptive SCD (P-SCD). Major challenges identified included inadequate nursing staff to perform screening, shortage of screening supplies, and delays in receiving screening results. Strategies to overcome some of the challenges were incorporated into phase one, resulting in increased screening coverage to 83.7%. CONCLUSIONS: Implementing NBS for SCD in KBTH presented challenges with implications on achieving and sustaining universal NBS in KBTH and other settings in SSA. Specific steps addressing these challenges comprehensively will help build on the modest initial gains, moving closer toward a sustainable national NBS program.


Assuntos
Anemia Falciforme , Triagem Neonatal , África Subsaariana , Anemia Falciforme/diagnóstico , Análise Custo-Benefício , Hospitais de Ensino , Humanos , Recém-Nascido
3.
Ecancermedicalscience ; 14: 1140, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33281932

RESUMO

Breast cancer is the commonest female cancer worldwide and the most common malignancy during pregnancy. The current management of breast cancer is based on patient and tumour characteristics, preferences and disease stage. In pregnancy-associated breast cancer, the gestational age influences treatment options. Sequencing of therapies is guided by safe imaging options, timing of delivery and prognosis. Systemic therapy options in the neoadjuvant, adjuvant and palliative settings are limited due to safety concerns of the unborn foetus. In resource-constrained regions, the application of safe options may be challenging. This paper reports four of such cases managed in Ghana using a multidisciplinary approach and local resource-appropriate evidence-based practices. Maternal and foetal outcomes were acceptable with none resulting in termination of pregnancy.

4.
Int J Gynaecol Obstet ; 146(3): 333-338, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31206635

RESUMO

OBJECTIVE: To determine the occurrence of and risk factors for fetomaternal hemorrhage (FMH) among pregnant women at Korle Bu Teaching Hospital in Accra, Ghana. METHODS: A prospective study of FMH among pregnant women without hemoglobinopathies in the second trimester attending prenatal care between October 2015 and May 2016 performed using the Kleihauer-Betke test. Volume of FMH was estimated; ABO and Rh blood groups of participants were determined. A data extraction form and structured questionnaire were used to collect demographic and clinical information, and data on risk factors. RESULTS: Of 151 participants, 32 (21.2%) had FMH. Almost 18% (n=27) had FMH at baseline (16-24 weeks), 10% (10/100) at 28-32 weeks, and 11.1% (11/99) at 34-37 weeks of pregnancy. Volume of FMH was less than 30 mL in 30 (19.9%) women, whereas it was greater than 30 mL in 2 (1.3%) women. No identifiable patient-specific factors were associated with occurrence of FMH. CONCLUSION: FMH is common among pregnant women in Ghana and can occur as early as 16 weeks, without identifiable risk factors. RhD negative women who may be pregnant with RhD positive fetuses should be screened early in pregnancy, not only at delivery, for occurrence of FMH.


Assuntos
Transfusão Feto-Materna/epidemiologia , Adulto , Feminino , Transfusão Feto-Materna/sangue , Transfusão Feto-Materna/diagnóstico , Gana/epidemiologia , Humanos , Gravidez , Cuidado Pré-Natal/métodos , Estudos Prospectivos , Sistema do Grupo Sanguíneo Rh-Hr/sangue , Fatores de Risco
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