Antiretroviral Localization in Gut-Associated Lymphoid Tissue and Lower Female Genital Tract Tissue of HIV+ Subjects

HIV Clinical Trial

Official title: Antiretroviral Localization in Gut-Associated Lymphoid Tissue and Lower Female Genital Tract Tissue of HIV+ Subjects

Status Terminated

Clinical Trial Summary

The purpose of this research study is to find out how the drugs Truvada® (tenofovir/emtricitabine), Isentress® (raltegravir), Reyataz® (atazanavir), Sustiva® (efavirenz), and Selzentry® (maraviroc) get into the intestines and the female genital tract. All of these drugs are very effective at reducing the number of HIV viruses in the blood, however it is unknown how the drugs move around inside tissues where HIV might be hiding. This study will determine specifically where in the tissue the drug and the HIV are located through the use of a new technology that takes creates a picture of the tissue. This information will help scientists determine the best way to make new drugs to target the hidden HIV in tissue.

Clinical Trial Description

Study Design

This is an observational study of TFV, FTC, RAL, ATZ, EFV, and MVC localization within GALT (terminal ileum & rectum), vaginal, and cervical tissues in the setting of undetectable plasma HIV. Participants will be selected on the basis of receiving either TFV/FTC/RAL, TFV/FTC/ATZ/r, TFV/FTC/EFV, or TFV/FTC/MVC as part of their ongoing HIV care. After participant education, informed consent, and screening for study eligibility, participants will be evaluated at baseline. All samples will be collected over the course of a 36 hour inpatient visit as described below.

Study Sampling

1. Blood plasma will be collected after enrollment (approximately 2 hours after the start of the inpatient visit) and before the start of bowel preparation (approximately 2-12 hours after the start of the inpatient visit).

2. Vaginal and cervical tissue will be collected after enrollment (approximately 2 hours after the start of the inpatient visit) and before the start of bowel preparation (approximately 2-12 hours after the start of the inpatient visit).

3. Rectal and terminal ileal tissue will be collected at approximately 18 hours after the initiation of the bowel preparation.

Pharmacokinetic Analysis All blood, cervical, vaginal, ileal and rectal tissue samples will be analyzed by the Clinical Pharmacology and Analytical Chemistry Laboratory (CPAC) at the UNC School of Pharmacy, which is directed by the principal investigator, Angela Kashuba, PharmD. To visualize ARV localization within a tissue, one biopsy from each tissue site will be analyzed by IR-MALDESI using a previously established workflow for our laboratory.

HIV localization within tissues will be performed using in situ hybridization (ISH) in collaboration with the Haase lab at the University of Minnesota. This group has substantial experience in HIV RNA detection from human tissues, and preliminary studies have confirmed our ability to detect HIV RNA from serial slices of tissues.

Localization within tissue slices will be evaluated by IR-MALDESI. Measurement of the distribution of each ARV within pre-specified anatomical sub-regions across a tissue slice will allow for identification of areas where drug is either concentrating or lacking. ISH and IHC analysis of serial tissue slices will allow us to co-localize ARVs with HIV and HIV target cells. Once these anatomical areas have been visually identified, imaging software will be used to isolate and quantify the signal. ;

Related Conditions & MeSH terms

• HIV

• NCT number: NCT02641444
• Study type: Observational
• Source: University of North Carolina, Chapel Hill
• Status: Terminated
• Phase: N/A
• Start date: April 13, 2016
• Completion date: August 29, 2017