scholarly journals Rectal Microbiome Alterations Associated With Oral Human Immunodeficiency Virus Pre-Exposure Prophylaxis

2019 ◽  
Vol 6 (11) ◽  
Author(s):  
Jennifer A Fulcher ◽  
Fan Li ◽  
Ryan R Cook ◽  
Sara Zabih ◽  
Alexander Louie ◽  
...  
Keyword(s):  
Human Immunodeficiency Virus ◽  
Lasso Regression ◽  
Long Term Effects ◽  
Cross Sectional ◽  
Microbiome Composition ◽  
Immunodeficiency Virus ◽  
Sex With Men ◽  
Selection Operator ◽  
Exposure Prophylaxis ◽  
Sectional Analysis

Abstract Background Oral daily tenofovir (TFV) disoproxil fumarate/emtricitabine (TDF/FTC) for human immunodeficiency virus (HIV) pre-exposure prophylaxis (PrEP) is highly effective for HIVprevention, yet long-term effects are not fully understood. We investigated the effects of PrEP on the rectal microbiome in a cohort of men who have sex with men (MSM). Methods This cross-sectional analysis included HIV-negative MSM either on PrEP (n = 37) or not (n = 37) selected from an ongoing cohort using propensity score matching. Rectal swabs were used to examine microbiome composition using 16S ribosomal ribonucleic acid gene sequencing, and associations between PrEP use and microbiota abundance were examined. Hair specimens were used to quantify TFV and FTC exposure over the past 6 weeks on a subset of participants (n = 15). Results Pre-exposure prophylaxis use was associated with a significant increase in Streptococcus abundance (adjusted P = .015). Similar associations were identified using least absolute shrinkage and selection operator (LASSO) regression, confirming the increase in Streptococcus and also showing increased Mitsuokella, Fusobacterium, and decreased Escherichia/Shigella. Increased Fusobacterium was significantly associated with increasing TFV exposure. Conclusions Oral TDF/FTC for PrEP is associated with rectal microbiome changes compared to well matched controls, specifically increased Streptococcus and Fusobacterium abundance. This study highlights the need for future investigations of the role of microbiome changes on HIV susceptibility and effectiveness of PrEP.

scholarly journals Age-Related Changes in Expression of CXCR4 and CCR5 on Peripheral Blood Leukocytes from Uninfected Infants Born to Human Immunodeficiency Virus Type 1-Infected Mothers

2004 ◽  
Vol 11 (1) ◽  
pp. 229-234 ◽  
Author(s):  
Sharon Shalekoff ◽  
Glenda E. Gray ◽  
Caroline T. Tiemessen
Keyword(s):  
Human Immunodeficiency Virus ◽  
Cord Blood ◽  
Peripheral Blood Leukocytes ◽  
Blood Leukocytes ◽  
Cross Sectional ◽  
Age Related ◽  
Immunodeficiency Virus ◽  
Sectional Analysis ◽  
Exposed Uninfected

ABSTRACT Cross-sectional analysis of human immunodeficiency virus-exposed, uninfected infants revealed high proportions of CXCR4-expressing cells in their cord blood, which declined at 4.5 months and increased between 9 and 15 months to levels approaching those of uninfected adults. Proportions of CCR5-expressing cells, however, were very low in cord blood and subsequently increased with age.

scholarly journals Prevalence of Human Papillomavirus, Human Immunodeficiency Virus, and Other Sexually Transmitted Infections Among Men Who Have Sex With Men in Togo: A National Cross-sectional Survey

2018 ◽  
Vol 69 (6) ◽  
pp. 1019-1026 ◽  
Author(s):  
Valentine Marie Ferré ◽  
Fifonsi A Gbeasor-Komlanvi ◽  
Gilles Collin ◽  
Anoumou Claver Dagnra ◽  
Quentin Le Hingrat ◽  
...  
Keyword(s):  
Human Immunodeficiency Virus ◽  
Human Papillomavirus ◽  
Sub Saharan Africa ◽  
National Study ◽  
Transmitted Infection ◽  
Cross Sectional ◽  
Sexually Transmitted ◽  
Increased Risk ◽  
Immunodeficiency Virus ◽  
Sex With Men

Abstract Background Sub-Saharan Africa is a region of both high human immunodeficiency virus (HIV) and anal cancer incidence. We conducted the first national study in Togo to assess human papillomavirus (HPV), HIV, and other sexually transmitted infection (STI) prevalence among men who have sex with men (MSM). Methods A multicentric cross-sectional study was conducted among MSM recruited in 4 Togolese cities. Anal swabs were collected to test HPV, herpes simplex virus (HSV), and 7 STIs. Results Among the 207 MSM, HIV and high-risk HPV (hrHPV) overall prevalence were 26.1% and 44.9%, respectively. The most common hrHPV types were HPV-35 (15.0%) and HPV-16 (13.0%). Prevalence of hrHPV and multiple HPV infections were higher among HIV-infected than among HIV-uninfected MSM (85.2% vs 30.7%, P < 10–5 and 85.2% vs 28.7%, P < 10–5, respectively). Other STIs, except hepatitis B virus, were also more prevalent among HIV-infected MSM (Neisseria gonorrhoeae, P = .03; Mycoplasma genitalium, P = .04; HSV-2, P = .001; and a trend for Chlamydia trachomatis, P = .06). In multivariate analysis (adjusted odds ratio [95% confidence interval]), HIV (10.1 [4.0–25.6]), living in Lomé (2.8 [1.1–7.1]), HSV-2 excretion (26.7 [2.9–244.3]), C. trachomatis (11.7 [2.3–58.9]), and M. genitalium infection (9.6 [3.1–29.9]) were associated with increased risk of hrHPV infection. Conclusions We report a high burden of anal STIs with an unusual hrHPV type distribution among MSM, highlighting the critical need of implementation of a national strategy regarding prevention of STIs and vaccination against HPV.

scholarly journals Effects of Genital Tract Inflammation on Human Immunodeficiency Virus Type 1 V3 Populations in Blood and Semen

2000 ◽  
Vol 74 (19) ◽  
pp. 8946-8952 ◽  
Author(s):  
Li-Hua Ping ◽  
Myron S. Cohen ◽  
Irving Hoffman ◽  
Pietro Vernazza ◽  
Françoise Seillier-Moiseiwitsch ◽  
...  
Keyword(s):  
Human Immunodeficiency Virus ◽  
Seminal Plasma ◽  
Genital Tract ◽  
Cross Sectional ◽  
Immunodeficiency Virus ◽  
Sectional Analysis ◽  
And Control ◽  
Hiv 1 ◽  
Plasma Compartment

ABSTRACT We have examined cell-free viral populations in the blood plasma and seminal plasma compartments of men infected with subtype C human immunodeficiency virus type 1 (HIV-1) using the V3-specific heteroduplex tracking assay (V3-HTA). We studied two cohorts of subjects who had visited either a sexually transmitted disease (STD) clinic for genital tract inflammation in the form of urethritis (n = 43) or a dermatology clinic (controls,n = 14) in Malawi. We have previously shown that the presence of urethritis is associated with an eightfold increase in virus load in the seminal plasma compartment (M. S. Cohen et al., Lancet 349:1868–1873, 1997). The purpose of this study was to determine whether genital tract inflammation and its treatment caused genetic instability in cell-free HIV-1 populations. In a cross-sectional analysis at study entry, three-fourths of the STD and control subjects had multiple V3 populations in their blood while 60% of the STD subjects and 79% of the control subjects had multiple V3 populations in their semen. Overall, one-fourth of all of the subjects showed discordance between results with blood and semen specimens when samples were compared for the presence and absence of subpopulations. When differences in the relative levels of abundance of bands were also taken into account, two-fifths of all of the subjects showed discordance between the compartments. Among the subset of subjects in whom multiple virus populations could be detected, half showed discordance between the compartments. There were no differences between STD and control cohorts for these comparisons of the compartments in this cross-sectional analysis at study entry. Longitudinal analysis of the viral populations from two separate clinic visits over 1 to 4 weeks showed that the complexity of each V3 population as measured by Shannon entropy was different in blood and semen at the two time points, indicating that the blood and semen constitute different compartments for HIV-1. The seminal plasma compartment was more dynamic than the blood plasma compartment for the STD subjects who were treated for urethritis, with changes being noted in the presence or absence of V3-HTA bands in the semen of 29% of these subjects but in the blood of only 9% of these subjects. However, the changes were generally small. Overall, our results suggest that 40% of male subjects show discordance between seminal and blood viral populations and that the complexity of each V3 population was different between the two compartments. Both of these results point to the partial independence of the seminal compartment as a viral niche within the body.

scholarly journals Prescribing of Human Immunodeficiency Virus (HIV) Pre-exposure Prophylaxis by HIV Medical Providers in the United States, 2013–2014

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
John Weiser ◽  
Shikha Garg ◽  
Linda Beer ◽  
Jacek Skarbinski
Keyword(s):  
Human Immunodeficiency Virus ◽  
Prevalence Ratio ◽  
The United States ◽  
Hiv Care ◽  
Care Providers ◽  
Persons Who Inject Drugs ◽  
Provider Characteristics ◽  
Immunodeficiency Virus ◽  
Sex With Men ◽  
Exposure Prophylaxis

Abstract Background Clinical trials have demonstrated the effectiveness of human immunodeficiency virus (HIV) pre-exposure prophylaxis (PrEP) for reducing HIV acquisition. Understanding how HIV care providers are prescribing PrEP is necessary to ensure success of this prevention strategy. Methods During 2013–2014, we surveyed US HIV care providers who also provided care to HIV-negative patients. We estimated percentages who had prescribed PrEP and assessed associations between provider characteristics and PrEP prescribing. Results An estimated 26% (95% confidence interval [CI], 20–31) had ever prescribed PrEP. Of these, 74% (95% CI, 61–87) prescribed for men who have sex with men (MSM), 30% (95% CI, 21–39) for women who have sex with men, 23% (95% CI, 9–37) for men who have sex with women, 23% (95% CI, 15–30) for uninfected partners in HIV-discordant couples trying to conceive, and 1% (95% CI, 0–2) for persons who inject drugs. The following provider characteristics were significantly associated with having prescribed PrEP: male vs female (32% vs 16%; adjusted prevalence ratio [aPR], 1.5; 95% CI, 1.0–2.2), lesbian/gay/bisexual vs heterosexual orientation (50% vs 21%; aPR, 2.0; 95% CI, 1.3–2.9), and HIV caseload (&gt;200, 51–200, and ≤50 patients, 39%, 29%, and 14%, respectively; &gt;200 vs ≤50 patients, aPR 2.4, 95% CI 1.1–5.2, and 51–200 vs ≤50 patients, aPR 2.2, 95% CI 1.2–4.0). Conclusions In 2013–2014, one quarter of HIV care providers reported having prescribed PrEP, most commonly for MSM and rarely for persons who inject drugs. Lesbian/gay/bisexual providers and male providers were more likely than others to have prescribed PrEP. Additional efforts may enable more providers to prescribe PrEP to underserved clients needing the service.

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