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  • Title: Antiretroviral therapy suppresses rectal HIV-RNA shedding despite inflammation in MSM with rectal C. trachomatis and N. gonorrhoeae infections-a cross-sectional, single-center study.
    Author: Storim J, Verheyen J, Wolff E, Wohlschlaeger J, Heintschel von Heinegg E, Schadendorf D, Esser S.
    Journal: Sex Transm Infect; 2019 Mar; 95(2):95-98. PubMed ID: 29431149.
    Abstract:
    OBJECTIVES: Rectal infections with Chlamydia trachomatis and/or Neisseria gonorrhoeae (CT/NG) are common in men who have sex with men (MSM) and are linked to HIV transmission. However, rectal CT/NG infections are often asymptomatic and it is not known how they contribute to HIV transmission. We assessed clinical and cytological signs of inflammation as well as rectal HIV-RNA in HIV-infected MSM with and without CT/NG infection. METHODS: 112 HIV-positive MSM with or without rectal symptoms and with or without antiretroviral therapy who underwent high-resolution anoscopy (HRA) at the proctological outpatient centre of the University Hospital Essen, Germany, between November 2013 and February 2014 were included in this cross-sectional study. During the examination, rectal swabs for the assessment of CT/NG, HIV-RNA and inflammatory cells (granulocytes, lymphocytes, histiocytes) were collected. 110 patients were assessed according to the study protocol, and no imputation of missing data was performed. RESULTS: Rectal infections with CT or NG were detected in 17 participants, and 4 participants were coinfected. Only symptomatic CT/NG infections (8/17) showed signs of inflammation in HRA. Symptomatic CT/NG infections were also associated with the detection of lymphocytes and histiocytes in rectal cytology (both P<0.001). In contrast, asymptomatic CT/NG infections neither resulted in clinical nor cytological signs of inflammation. Rectal HIV-RNA was undetectable in all participants with rectal CT/NG infections who received combined antiretroviral therapy (ART) when plasma HIV-RNA was below the limit of detection (n=13). Besides rectal CT/NG infections, syphilis (n=4) and HPV-associated lesions (n=37) were frequently detected, and proctological symptoms were associated with simultaneous infection with ≥2 STDs. CONCLUSIONS: Only symptomatic but not asymptomatic rectal infections with CT and/or NG were associated with clinical and cytological signs of inflammation. Rectal HIV shedding was not promoted by CT/NG infections in patients receiving ART with suppressed plasma HIV-RNA. TRIAL REGISTRATION NUMBER: UTN: U1111-1150-4804. German Clinical Trials Register (DRKS): DRKS00005468.
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