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B Brice

Publications and source records attributed to B Brice.

7 recordsLinked to original sources
PubMed2000

Allelic frequencies of host genetic variants influencing susceptibility to HIV-1 infection and disease in South African populations.

OBJECTIVES: Limited information is available on the prevalence in African populations of host genetic polymorphisms conferring resistance to HIV-1 infection and disease. The objective of this study was to determine the allelic frequencies in South African populations of the chemokine receptor gene variants CCR5delta32, CCR5m303 and CCR2b-641 and the CXCR4 ligand gene variant SDF1-3'A. METHOD: Cross-sectional study to determine the prevalence of these gene variants in South African subjects of African and European descent. RESULTS: The CCR5delta32 genetic variant is rare in individuals of African origin, having an allelic frequency of 0.1% (n = 1247) compared with 9.8% (n = 144) in Caucasians. The CCR5m303 mutation was not detected in Africans (n = 687), whereas an allelic frequency of 0.9% (n = 145) was identified in Caucasians. The frequency of CCR2b-641 allele was 13.1% (n = 180) in Africans, which was significantly higher that the 7.2% (n = 146) detected in Caucasians. Finally the allelic frequency of the SDF1-3'A gene variant was only 1.0% (n = 198) in Africans compared with 19.8% (n = 145) in Caucasians. CONCLUSIONS: These results indicate that genetic polymorphisms conferring resistance to HIV-1 infection are rare in the South African Black population. Except for the CCR2b-641 gene variant, individuals of African origin also had a much lower prevalence of genetic variants associated with prolonged disease progression.

Alleles↗
PubMed1985

Effects of female sterilization: one year follow-up in a prospective controlled study of psychological and psychiatric outcome.

A prospective controlled study of the psychological effects of elective interval and postpartum tubal sterilization was carried out on a selected sample of women. Subjects were interviewed pre-operatively (n = 138) and one year post-operatively (n = 116; 83%), using standardized instruments and procedures, including the Present State Examination. No differences within or between sterilization and control groups were found over the follow-up year in the prevalence of psychiatric morbidity, which was no higher than would be expected in a general population sample. Beneficial effects of sterilization were reported on a number of psychosexual variables. Adverse effects such as regret or deterioration in marital relationship were rare, but were more likely to occur in postpartum subjects, among whom abdominal pain was also reported more commonly at one year follow-up than pre-operatively. The relevance of "normal" postnatal events and of the role of pre-operative counselling are considered in relation to these findings. Less favourable outcome at one year follow-up was commonly associated with higher PSE scores pre-operatively.

Abdomen↗
PubMed1984

Psychological sequelae of female sterilization: short-term outcome in a prospective controlled study. A report from the UK Field Research Centre of a WHO collaborative project.

Healthy multiparous women having elective interval (N = 69) or postpartum (N = 69) sterilization were interviewed pre-operatively and 6 weeks and 6 months post-operatively, using standardized instruments. They did not differ significantly from control samples of comparable non-sterilized women with respect to mental state (Present State Examination) or subjectively-assessed mental or physical health or abdominal pain. More sterilization subjects than control subjects reported subjectively experienced improvement in sexual satisfaction at the later follow-up. Reports of poor physical health and abdominal pain increased over time within both the sterilization and the control groups. Reports of adverse effects at follow-up were often associated with higher PSE scores initially. Regrets and wish for reversal were rare and were also associated with higher initial PSE scores. Since the adverse effects were more common among postpartum subjects, it is suggested that subjectively experienced sequelae of sterilization may sometimes be attributable to 'normal' postnatal events.

Abdomen↗