Hiv testing and counselling for women attending child health clinics: An opportunity for entry to prevent mother-to-child transmission and hiv treatment. Author


Adverse Events in HIV-Infected Persons Receiving Antiretroviral Drug Regimens in a Large Urban Slum in Nairobi, Kenya, 2003-2005



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Adverse Events in HIV-Infected Persons Receiving Antiretroviral Drug Regimens in a Large Urban Slum in Nairobi, Kenya, 2003-2005.
Author: Kim, A. A.; Wanjiku, L.; Macharia, D. K.; Wangai, M.; Isavwa, A.; Abdi, H.; Marston, B. J.; Ilako, F.; Kjaer, M.; Chebet, K.; De Cock, K. M., and Weidle, P. J.
Source: J Int Assoc Physicians AIDS Care (Chic Ill). 2007 Sep; 6(3):206-9.
Abstract: Objective:

This article describes toxicities to antiretroviral therapy (ART) among HIV-infected patients receiving care at a clinic in a large urban slum in Nairobi, Kenya.


Methods:

Patients were treated with nonnucleoside reverse transcriptase inhibitor-based ART and followed at scheduled intervals. Frequencies and cumulative probabilities of toxicities were calculated.


Results:

Among 283 patients starting ART, any and severe clinical toxicity were recorded as 65% and 6%, respectively. Cumulative probabilities for remaining free of any and severe clinical toxicities at 6, 12, and 18 months, were 0.47, 0.26, and 0.17, respectively and 0.98, 0.95, and 0.89, respectively. The probability of remaining free from elevated and grade 3 or 4 serum aminotransferase (AST) at 6, 12, and 18 months were 0.62, 0.42, and 0.21, respectively, and 0.99 at 6, 12, and 18 months.


Conclusions:

ART toxicities were frequent, but severe toxicities were less common. In resource-limited settings, ART toxicity should not represent a barrier to care.



Reduced rates of HIV acquisition during unprotected sex by Kenyan female sex workers predating population declines in HIV prevalence.
Author: Kimani, J.; Kaul, R.; Nagelkerke, N. J.; Luo, M.; MacDonald, K. S.; Ngugi, E.; Fowke, K. R.; Ball, B. T.; Kariri, A.; Ndinya-Achola, J., and Plummer, F. A.
Source: AIDS. 2008 Jan 2; 22(1):131-7.
Abstract: Objectives:

Female sex workers (FSWs) form a core group at high risk of both sexual HIV acquisition and secondary transmission. The magnitude of these risks may vary by sexual risk taking, partner HIV prevalence, host immune factors and genital co-infections. We examined temporal trends in HIV prevalence and per-act incidence, adjusted for behavioral and other variables, in FSWs from Nairobi, Kenya.


Methods:

An open cohort of FSWs followed since 1985. Behavioral and clinical data were collected six monthly from 1985 to 2005, and sexually transmitted infection (STI) diagnostics and HIV serology performed. A Cox proportional hazards model with time-dependent covariables was used to estimate infection risk as a function of calendar time.


Results:

HIV prevalence in new FSW enrollees peaked at 81% in 1986, and was consistently below 50% after 1997. Initially uninfected FSWs remained at high risk of acquiring HIV throughout the study period, but the rate of HIV acquisition during unprotected sex with a casual client declined by over four-fold. This reduction correlated closely with decreases in gonorrhea prevalence, and predated reductions in the Kenyan HIV population prevalence by over a decade.


Conclusions:

The per-act rate of HIV acquisition in high-risk Nairobi FSWs fell dramatically between 1985 and 2005. This decline may represent the impact of improved STI prevention/therapy, immunogenetic shifts in at-risk women, or changes in the proportion of HIV exposures occurring with clients who had acute HIV infection. Declining HIV incidence in high-risk cohorts may predict and/or be causally related to future reductions in population prevalence.



A note from the field: Kenya HIV / AIDS and microfinance training. USAID-AMAP financial services knowledge generation project.
Author: Kiyaga E and Sebageni, G.
Abstract: Edward Kiyaga of MED-Net—a microfinance affiliate of World Vision Uganda—and Grace Tiberondwa Sebageni of World Relief Rwanda submitted this week’s Note on the training they provided to Kenyan microfinance institution managers. Addressing an urgent need for microfinance strategies to cope with HIV/AIDS in Africa, the Kenya Microfinance and HIV/AIDS workshop complemented the one held in August 2004 in Addis Ababa, Ethiopia, which was the subject of the Note from Ethiopia. Both workshops were managed by ECIAfrica, and Development Alternatives, Inc. (DAI). DAI leads the Accelerated Microenterprise Advancement Project’s Financial Services Knowledge Generation project. The Kenyan course brought together 11 participants from seven microfinance institutions (MFIs). Kiyaga and Sebageni elaborate: “The Joint United Nations Programme on HIV/AIDS reports that Kenya is one of the nine African countries hit hardest by the HIV/AIDS epidemic. According to the United Nations, at the end of 2001 an estimated 2.5 million Kenyan adults were living with HIV/AIDS, a prevalence rate of 15 percent. Largely because of AIDS, life expectancy in Kenya dropped from 60 years in 1990 to 49 years in 2000. In addition to the increase in prevalence, a number of studies from Kenya’s Ministry of Health indicate that high health care costs and lost income from HIV/AIDS will be a major burden on the Kenyan economy. By 2005, Kenya’s gross domestic product is projected to be 14.5 percent lower than it would have been in the absence of AIDS.” (excerpt)

IL-7Ralpha expression on CD4+ T lymphocytes decreases with HIV disease progression and inversely correlates with immune activation.
Author: Koesters, S. A.; Alimonti, J. B.; Wachihi, C.; Matu, L.; Anzala, O.; Kimani, J.; Embree, J. E.; Plummer, F. A., and Fowke, K. R.
Source: Eur J Immunol. 2006 Feb; 36(2):336-44.
Abstract: Many factors can influence the rate of HIV disease progression, including those that maintain T cell homeostasis. One key homeostatic regulator is the IL-7 receptor (IL-7R). Previous studies have shown IL-7R expression levels decrease in HIV infection, but effects on memory subtypes, CD4(+) T cells, and cell function have not been explored. The present study examined the expression of the IL-7Ralpha chain on naive and memory T lymphocyte subsets of both HIV-positive and HIV-negative individuals from Nairobi, Kenya to assess the role of IL-7Ralpha in HIV disease. Expression of IL-7Ralpha was significantly reduced in all CD4(+) and CD8(+) T cell subsets in HIV-positive individuals. This reduction was further enhanced in those with advanced HIV progression. Expression of IL-7Ralpha was inversely correlated to immune activation, and apoptosis, and was positively correlated with CD4 count in both bivariate and multivariate analysis. Expression of IL-7Ralpha did not correlate with HIV viral loads, indicating the elevated immune activation seen in HIV-infected individuals may be impacting expression of IL-7Ralpha, independent of viral loads. Signaling via the IL-7R is essential for T cell homeostasis and maintenance of T cell memory. Reduction of this receptor may contribute to the homeostatic disruption seen in HIV.

Social networks and HIV/AIDs risk perceptions.
Author: Kohler, H. P.; Behrman, J. R., and Watkins, S. C.
Source: Demography. 2007 Feb; 44(1):1-33.
Abstract: Understanding the determinants of individuals' perceptions of their risk of becoming infected with HIV and their perceptions of acceptable strategies of prevention is an essential step toward curtailing the spread of this disease. We focus in this article on learning and decision-making about AIDS in the context of high uncertainty about the disease and appropriate behavioral responses. We argue that social interactions are important for both. Using longitudinal survey data from rural Kenya and Malawi, we test this hypothesis. We investigate whether social interactions--and especially the extent to which social network partners perceive themselves to be at risk--exert causal influences on respondents' risk perceptions and on one approach to prevention, spousal communication about the threat of AIDS to the couple and their children. The study explicitly allows for the possibility that important characteristics, such as unobserved preferences or community characteristics, determine not only the outcomes of interest but also the size and composition of networks. The most important empirical result is that social networks have significant and substantial effects on risk perceptions and the adoption of new behaviors even after we control for unobserved factors.

Social networks and HIV/AIDs risk perceptions.
Author: Kohler, H. P.; Behrman, J. R., and Watkins, S. C.
Source: Demography. 2007 Feb; 44(1):1-33.

Abstract: Understanding the determinants of individuals' perceptions of their risk of becoming infected with HIV and their perceptions of acceptable strategies of prevention is an essential step toward curtailing the spread of this disease. We focus in this article on learning and decision-making about AIDS in the context of high uncertainty about the disease and appropriate behavioral responses. We argue that social interactions are important for both. Using longitudinal survey data from rural Kenya and Malawi, we test this hypothesis. We investigate whether social interactions--and especially the extent to which social network partners perceive themselves to be at risk--exert causal influences on respondents' risk perceptions and on one approach to prevention, spousal communication about the threat of AIDS to the couple and their children. The study explicitly allows for the possibility that important characteristics, such as unobserved preferences or community characteristics, determine not only the outcomes of interest but also the size and composition of networks. The most important empirical result is that social networks have significant and substantial effects on risk perceptions and the adoption of new behaviors even after we control for unobserved factors.

Adult male circumcision: results of a standardized procedure in Kisumu District, Kenya.
Author: Krieger, J. N.; Bailey, R. C.; Opeya, J.; Ayieko, B.; Opiyo, F.; Agot, K.; Parker, C.; Ndinya-Achola, J. O.; Magoha, G. A., and Moses, S.
Source: BJU Int. 2005 Nov; 96(7):1109-13.
Abstract: Objective:

To develop a standard procedure for male circumcision in a resource-poor medical setting and prospectively evaluate the outcome in a randomized, controlled trial with the incidence of human immunodeficiency virus (HIV) as the main outcome, as studies suggest that circumcision is associated with a lower incidence of HIV and other sexually transmitted infections in high-risk populations.


Subjects and methods:

Healthy, uncircumcised, HIV-seronegative men aged 18-24 years from Kisumu District, Kenya, were offered participation in a clinical trial using a standard circumcision procedure based on "usual" medical procedures in Western Kenya. The follow-up included visits at 3, 8 and 30 days after circumcision, with additional visits if necessary. Healing, satisfaction and resumption of activities were assessed at these visits and 3 months from randomization.


Results:

Overall, 17 (3.5%) of the 479 circumcisions were associated with adverse events judged definitely, probably or possibly related to the procedure. The most common adverse events were wound infections (1.3%), bleeding (0.8%), and delayed wound healing or suture line disruption (0.8%). After 30 days, 99% of participants reported being very satisfied with the procedure; approximately 23% reported having had sex and 15% reported that their partners had expressed an opinion, all of whom were very satisfied with the outcome. About 96% of the men resumed normal general activities within the first week after the procedure.


Conclusion:

Safe and acceptable adult male circumcision services can be delivered in developing countries should male circumcision ultimately be advocated as a public-health measure.



Etiology and resistance patterns of respiratory isolates in Kenyan adults with AIDS from slum population.
Author: Krcmery, V.; Benca, J.; Liskova, A.; Mitterpachova, E.; Kolenova, A.; Sladeckova, V.; Horvathova, D., and Kiwou, M.
Source: Neuro Endocrinol Lett. 2007 Nov; 28 Suppl 3:37-9.
Abstract: We investigated regularly swabs of adults dispenzarised at Mary Immaculate Clinic of Trnava University in Nairobi providing free health care for about 50 000 population of Mukuru Slums. 20 patients who were treated for AIDS by our clinic (those who started HAART before Free National AIDS Cooperation Programme - NASCOP) were assessed after 1, 2 and 3 years (18 of 20 completed the survey, other 2 loss of follow up, probably died. Exposure to other molecules can select resistant mutants. Previous exposure to TMP/SMX was similar in both groups and therefore was not responsible for the difference between resistance patterns

Adult male circumcision: results of a standardized procedure in Kisumu District, Kenya.
Author: Krieger, J. N.; Bailey, R. C.; Opeya, J.; Ayieko, B.; Opiyo, F.; Agot, K.; Parker, C.; Ndinya-Achola, J. O.; Magoha, G. A., and Moses, S.
Source: BJU Int. 2005 Nov; 96(7):1109-13.
Abstract: Objective:

To develop a standard procedure for male circumcision in a resource-poor medical setting and prospectively evaluate the outcome in a randomized, controlled trial with the incidence of human immunodeficiency virus (HIV) as the main outcome, as studies suggest that circumcision is associated with a lower incidence of HIV and other sexually transmitted infections in high-risk populations.


Subjects and methods:

Healthy, uncircumcised, HIV-seronegative men aged 18-24 years from Kisumu District, Kenya, were offered participation in a clinical trial using a standard circumcision procedure based on "usual" medical procedures in Western Kenya. The follow-up included visits at 3, 8 and 30 days after circumcision, with additional visits if necessary. Healing, satisfaction and resumption of activities were assessed at these visits and 3 months from randomization.


Results:

Overall, 17 (3.5%) of the 479 circumcisions were associated with adverse events judged definitely, probably or possibly related to the procedure. The most common adverse events were wound infections (1.3%), bleeding (0.8%), and delayed wound healing or suture line disruption (0.8%). After 30 days, 99% of participants reported being very satisfied with the procedure; approximately 23% reported having had sex and 15% reported that their partners had expressed an opinion, all of whom were very satisfied with the outcome. About 96% of the men resumed normal general activities within the first week after the procedure.


Conclusion:

Safe and acceptable adult male circumcision services can be delivered in developing countries should male circumcision ultimately be advocated as a public-health measure.



Adult Male Circumcision: Effects on Sexual Function and Sexual Satisfaction in Kisumu, Kenya.
Author: Krieger, J. N.; Mehta, S. D.; Bailey, R. C.; Agot, K.; Ndinya-Achola, J. O.; Parker, C., and Moses, S.
Source: J Sex Med. 2008 Aug 28.
Abstract: Introduction. Male circumcision is being promoted for HIV prevention in high-risk heterosexual populations. However, there is a concern that circumcision may impair sexual function. Aim. To assess adult male circumcision's effect on men's sexual function and pleasure. Methods. Participants in a controlled trial of circumcision to reduce HIV incidence in Kisumu, Kenya were uncircumcised, HIV negative, sexually active men, aged 18-24 years, with a hemoglobin >/=9.0 mmol/L. Exclusion criteria included foreskin covering less than half the glans, a condition that might unduly increase surgical risks, or a medical indication for circumcision. Participants were randomized 1:1 to either immediate circumcision or delayed circumcision after 2 years (control group). Detailed evaluations occurred at 1, 3, 6, 12, 18, and 24 months. Main Outcome Measures. (i) Sexual function between circumcised and uncircumcised men; and (ii) sexual satisfaction and pleasure over time following circumcision. Results. Between February 2002 and September 2005, 2,784 participants were randomized, including the 100 excluded from this analysis because they crossed over, were not circumcised within 30 days of randomization, did not complete baseline interviews, or were outside the age range. For the circumcision and control groups, respectively, rates of any reported sexual dysfunction decreased from 23.6% and 25.9% at baseline to 6.2% and 5.8% at month 24. Changes over time were not associated with circumcision status. Compared to before they were circumcised, 64.0% of circumcised men reported their penis was "much more sensitive," and 54.5% rated their ease of reaching orgasm as "much more" at month 24. Conclusions. Adult male circumcision was not associated with sexual dysfunction. Circumcised men reported increased penile sensitivity and enhanced ease of reaching orgasm. These data indicate that integration of male circumcision into programs to reduce HIV risk is unlikely to adversely effect male sexual function.

Human immunodeficiency virus (HIV) type 1 proviral hypermutation correlates with CD4 count in HIV-infected women from Kenya.
Author: Land, A. M.; Ball, T. B.; Luo, M.; Pilon, R.; Sandstrom, P.; Embree, J. E.; Wachihi, C.; Kimani, J., and Plummer, F. A.
Source: J Virol. 2008 Aug; 82(16):8172-82.
Abstract: APOBEC3G is an important innate immune molecule that causes human immunodeficiency virus type 1 (HIV-1) hypermutation, which can result in detrimental viral genome mutations. The Vif protein of wild-type HIV-1 counteracts APOBEC3G activity by targeting it for degradation and inhibiting its incorporation into viral particles. Additional APOBEC cytidine deaminases have been identified, such as APOBEC3F, which has a similar mode of action but different sequence specificity. A relationship between APOBEC3F/G and HIV disease progression has been proposed. During HIV-1 sequence analysis of the vpu/env region of 240 HIV-infected subjects from Nairobi, Kenya, 13 drastically hypermutated proviral sequences were identified. Sequences derived from plasma virus, however, lacked hypermutation, as did proviral vif. When correlates of disease progression were examined, subjects with hypermutated provirus were found to have significantly higher CD4 counts than the other subjects. Furthermore, hypermutation as estimated by elevated adenine content positively correlated with CD4 count for all 240 study subjects. The sequence context of the observed hypermutation was statistically associated with APOBEC3F/G activity. In contrast to previous studies, this study demonstrates that higher CD4 counts correlate with increased hypermutation in the absence of obvious mutations in the APOBEC inhibiting Vif protein. This strongly suggests that host factors, such as APOBEC3F/G, are playing a protective role in these patients, modulating viral hypermutation and host disease progression. These findings support the potential of targeting APOBEC3F/G for therapeutic purposes

Full-length HIV type 1 proviral sequencing of 10 highly exposed women from Nairobi, Kenya reveals a high proportion of intersubtype recombinants.
Author: Land, A. M.; Ball, T. B.; Luo, M.; Rutherford, J.; Sarna, C.; Wachihi, C.; Kimani, J., and Plummer, F. A.
Source: AIDS Res Hum Retroviruses. 2008 Jun; 24(6):865-72.
Abstract: Phylogenetic analysis has revealed that the current HIV/AIDS pandemic consists of a multitude of different viral clades and recombinant viruses. The predominant circulating HIV-1 clade in Kenya is A1; however, Kenya borders countries where different subtypes are prominent, making Kenya a likely location for recombination. Previous studies have reported significant differences in the proportions of sequences in Kenya that are intersubtype recombinants. Studies that performed sequence-based typing on multiple HIV-1 genomic regions or full-length sequences found higher rates of recombination than those that examined a single gene or gene fragment. In this study, we describe full-length HIV-1 proviral sequence-based genotyping after limited peripheral blood mononuclear cell (PBMC) coculture. Ten subjects from a highly exposed cohort located in Nairobi, Kenya were examined. Pairwise comparison found minimal difference between sequences generated directly from patient PBMC DNA compared to sequences from cocultured PBMC DNA. Of the 10 full-length HIV-1 sequences examined, five were nonrecombinant clade A1, while the other five were unique intersubtype recombinants. Although this frequency of recombination is higher than previously described in Kenya, this finding is in agreement with previous full-length sequence data. Interestingly, although all the nonrecombinant sequences were clade A1, not all the recombinant sequences contained a clade A1 sequence.

Orphans in Nyanza, Kenya: Coping with the struggles of everyday life in the context of the HIV / AIDS pandemic.
Author: Landry T; Luginaah I; Maticka-Tyndale E, and Elkins, D.
Source: Journal of HIV / AIDS Prevention in Children and Youth. 2007; 8(1):75-98.
Abstract: This paper examined the everyday challenges, stressors and coping strategies of orphans affected by HIV/AIDS in Nyanza, Kenya. A thematic analysis of six focus group discussions with orphans was guided by Stress and Coping Theoretical Framework. The orphans reported intense stress at the time of their parents' death with their immediate concern being who would care for them. Most orphans were separated from their siblings, and this separation only compounded the stressors and difficulties encountered by orphans. Orphans reported having problems with schooling and being treated differently as compared with the children of their caregivers. Orphans adopted various emotion-focused and problem-foused coping strategies, which were reinforced by financial and social support provided by their caregivers and community-based organizations. (author's)

Reaching the targets for tuberculosis control: the impact of HIV.
Author: Laserson, K. F. and Wells, C. D.
Source: Bull World Health Organ. 2007 May; 85(5):377-81; discussion 382-6.
Abstract: In 1991, the 44th World Health Assembly set two key targets for global tuberculosis (TB) control to be reached by 2000: 70% case detection of acid-fast bacilli smear-positive TB patients under the DOTS strategy recommended by WHO and 85% treatment success of those detected. This paper describes how TB control was scaled up to achieve these targets; it also considers the barriers encountered in reaching the targets, with a particular focus on how HIV infection affects TB control. Strong TB control will be facilitated by scaling-up WHO-recommended TB/HIV collaborative activities and by improving coordination between HIV and TB control programmes; in particular, to ensure control of drug-resistant TB. Required activities include more HIV counselling and testing of TB patients, greater use and acceptance of isoniazid as a preventive treatment in HIV-infected individuals, screening for active TB in HIV-care settings, and provision of universal access to antiretroviral treatment for all HIV-infected individuals eligible for such treatment. Integration of TB and HIV services in all facilities (i.e. in HIV-care settings and in TB clinics), especially at the periphery, is needed to effectively treat those infected with both diseases, to prolong their survival and to maximize limited human resources. Global TB targets can be met, particularly if there is renewed attention to TB/HIV collaborative activities combined with tremendous political commitment and will.

Higher set point plasma viral load and more-severe acute HIV type 1 (HIV-1) illness predict mortality among high-risk HIV-1-infected African women.

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