The magnitude and kinetics of the mucosal HIV-specific CD8+ T lymphocyte response and virus RNA load in breast milk.
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BACKGROUND: The risk of postnatal HIV transmission is associated with the magnitude of the milk virus load. While HIV-specific cellular immune responses control systemic virus load and are detectable in milk, the contribution of these responses to the control of virus load in milk is unknown. METHODS: We assessed the magnitude of the immunodominant GagRY11 and subdominant EnvKY9-specific CD8+ T lymphocyte response in blood and milk of 10 A*3002+, HIV-infected Malawian women throughout the period of lactation and correlated this response to milk virus RNA load and markers of breast inflammation. RESULTS: The magnitude and kinetics of the HIV-specific CD8+ T lymphocyte responses were discordant in blood and milk of the right and left breast, indicating independent regulation of these responses in each breast. However, there was no correlation between the magnitude of the HIV-specific CD8+ T lymphocyte response and the milk virus RNA load. Further, there was no correlation between the magnitude of this response and markers of breast inflammation. CONCLUSIONS: The magnitude of the HIV-specific CD8+ T lymphocyte response in milk does not appear to be solely determined by the milk virus RNA load and is likely only one of the factors contributing to maintenance of low virus load in milk.
T-Cell Antigen Receptor Specificity
Published Version (Please cite this version)10.1371/journal.pone.0023735
Publication InfoMahlokozera, Tatenda; Kang, Helen H; Goonetilleke, Nilu; Stacey, Andrea R; Lovingood, Rachel V; Denny, Thomas N; ... Center for HIV/AIDS Vaccine Immunology (2011). The magnitude and kinetics of the mucosal HIV-specific CD8+ T lymphocyte response and virus RNA load in breast milk. PLoS One, 6(8). pp. e23735. 10.1371/journal.pone.0023735. Retrieved from https://hdl.handle.net/10161/14732.
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Professor in Medicine
Thomas N. Denny, MSc, M.Phil, is the Chief Operating Officer of the Duke Human Vaccine Institute (DHVI) and the Center for HIV/AIDS Vaccine Immunology (CHAVI), and a Professor of Medicine in the Department of Medicine at Duke University Medical Center. He is also an Affiliate Member of the Duke Global Health Institute. He has recently been appointed to the Duke University Fuqua School of Business Health Sector Advisory Council. Previously, he was an Associate Professor of Pathology, Laboratory M
Wilburt C. Davison Distinguished Professor
Dr. Permar's work focuses on the development of vaccines to prevent vertical transmission of neonatal viral pathogens. She has utilized the nonhuman primate model of HIV/AIDS to characterize the virus-specific immune responses and virus evolution in breast milk and develop a maternal vaccine regimen for protection against breast milk transmission of HIV. In addition, Dr. Permar's lab has advanced the understanding of HIV-specific immune responses and virus evolution in vertically-transmitting an
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