Dr. Veazey is a Professor in the Department of Pathology and Laboratory Medicine at the Tulane University School of Medicine, and has been Chair of the Division of Comparative Pathology at the Tulane National Primate Research Center since 2003. He is a recognized expert on SIV and HIV infection and pathogenesis, a specialist in mucosal immunology, and in examining the earliest events in SIV transmission, immunology, and pathogenesis. As a veterinary pathologist, he has extensive training and experience in the comparative anatomy, histology, immunology, and pathophysiology of disease in both human and non-human primates. His research program has focused on the pathogenesis and immunology of AIDS since 1994, and he has developed an extensive HIV prevention research program to test the safety and efficacy of topical and systemic prevention and vaccine strategies using nonhuman primate models of HIV transmission. He has over 200 peer-reviewed publications including several invited reviews and commentaries on the transmission and pathogenesis of AIDS. His work is nationally and internationally recognized, and he is frequently an invited speaker at both domestic and international AIDS meetings. He is a member of the TNPRC Executive Committee, the TNPRC Pilot Research Program Committee, the Mucosal Immunology Working Group of the HIV Vaccine Trials Network (HVTN), the American Foundation for AIDS Research (AmFAR), the European Combined Highly Active Anti-Retroviral Microbicides Program (CHAARM), the Center for HIV and Vaccine Immunology (CHAVI), has served as a permanent member of the NIH AIDS Immunology and Pathogenesis (AIP) Grant Review Study Section, and as Chairperson of the NIH Vaccine Study Section (VACC).
AIDS Prevention and Treatment: Dr. Veazey is actively testing new HIV prevention strategies including topical microbicides, long acting systemic or implantable delivery devices, and various vaccines and adjuvants for HIV prevention. He is also studying the earliest cellular targets and immune responses after both vaginal and rectal mucosal viral challenge to identify new targets or therapies for prevention. Finally, he is working with multiple collaborators on latency reactivation, and immune modulation to assist in viral eradication and cure strategies. He is also an expert in mucosal immunology, particularly the gastrointestinal and reproductive tracts. His work has identified the intestine as the major target for HIV amplification, as well as the major reservoir for viral persistence in both spontaneous controllers, and antiretroviral treated macaques, and is currently testing new strategies to eradicate reservoirs specifically in intestinal tissues. Finally, Dr. Veazey is a member of the NIH Simiam Vaccine Evaluation Units (SVEU) team, and performs PI driven and collaborative research in the design and execution of HIV vaccine studies.
Mucosal immunology of HIV: Using SHIV and SIV macaque modesl, Dr. Veazey is studying the effects of pathogenic infection on mucosal tissues, especially CD4+ T Cell subsets. In recent publications, he has shown that activated, memory CD4+ T cells are selectively infected and eliminated within days of SIV infection; that Treg, and especially Th17 and Th22 cells are rapidly infected and depleted in early SIV infection of mucosal tissues, resulting on simultaneous loss of suppression to normal antigens, and breakdown of the IL-17/IL-22 dependent mucosal barrier, leading to systemic activation, driving HIV persistence and replication. His lab also demonstrated the mechanisms by which TFH cells become infected, subsequently down regulate CCR5, and persist as both latent and productively infected cells within the sanctuary sites of germinal centers and that these infected cells are functionally deficient in their ability to promote antibody responses.
Neonatal Immunology and Pediatric AIDS: Infants and children are more susceptible than adults to a variety of infectious diseases, particularly those of viral origin. This is particularly evident in children with HIV, who have a more rapid disease course and increased viral loads as compared to adults. For over 20 years the Veazey lab has been studying the normal development of newborn and neonatal primates by immunophenotypic analysis, cytokine production, and chemokine receptor expression in all of the major lymphoid tissues and organs of neonatal rhesus monkeys and have discovered several remarkable differences between the newborn primate and adult immune systems, including a selective infection and depletion of proliferating CD4+ T cells in infants that rapidly exhausts their T cell precursors, which may explain the more rapid progression to AIDS.
Alcohol and AIDS pathogenesis: For over 15 years, Dr. Veazey has collaborated with the Comprehensive Alcohol Research Center, LSU Health Sciences Center, in testing the effects of alcohol co-administration on SIV infection in macaques. We have designed jackets and tether systems in which alcohol may be delivered daily at precise doses into the stomach of animals without requiring sedation or other manipulations. His lab showed that alcohol markedly accelerates CD4+ T Cell turnover, specifically in the intestine, resulting in higher levels of target cells, increased set point viremia, and accelerated progression to disease. This system could also be adapted to test other drugs that need to be administered daily.
Herpes simplex virus (HSV) infection models: Dr. Veazey has recently been testing HSV-1 and 2 vaccine candidates with multiple collaborators. He has developed both HSV-1 and HSV-2 challenge models in NHP. to test the efficacy of HSV vaccines.
Nonhuman Primate Models and Understanding the Pathogenesis of HIV Infection and AIDS. Veazey RS, Lackner AA. ILAR J. 2017 Dec 1;58(2):160-171.
Persistence of SIV in the brain of SIV-infected Chinese rhesus macaques with or without antiretroviral therapy. Perez S, Johnson AM, Xiang SH, Li J, Foley BT, Doyle-Meyers L, Panganiban A, Kaur A, Veazey RS, Wu Y, Ling B. J Neurovirol. 2018 Feb;24(1):62-74. Epub 2017 Nov 27.
Correction for Sugimoto et al., "Critical Role for Monocytes/Macrophages in Rapid Progression to AIDS in Pediatric Simian Immunodeficiency Virus-Infected Rhesus Macaques". Sugimoto C, Merino KM, Hasegawa A, Wang X, Alvarez XA, Wakao H, Mori K, Kim WK, Veazey RS, Didier ES, Kuroda MJ. J Virol. 2017 Oct 27;91(22). pii: e01346-17. Print 2017 Nov 15. No abstract available.
Short Communication: Comparative Susceptibility of Rhesus Macaques of Indian and Chinese Origin to Vaginal Simian-Human Immunodeficiency Virus Transmission as Models for HIV Prevention Research. Veazey RS, Ling B. AIDS Res Hum Retroviruses. 2017 Dec;33(12):1199-1201. doi: 10.1089/AID.2017.0173. Epub 2017 Nov 7.
Long-term direct visualization of passively transferred fluorophore-conjugated antibodies. Schneider JR, Carias AM, Bastian AR, Cianci GC, Kiser PF, Veazey RS, Hope TJ. J Immunol Methods. 2017 Nov;450:66-72. Epub 2017 Aug 2.
Introduction. Veazey RS, Marx PA. J Med Primatol. 2017 Aug;46(4):119. doi: 10.1111/jmp.12302. No abstract available.
Maternal antibodies against tetanus toxoid do not inhibit potency of antibody responses to autologous antigen in newborn rhesus monkeys. Veazey RS, Lu Y, Xu H, Ziani W, Doyle-Meyers LA, Ratterree MS, Wang X. J Med Primatol. 2018 Feb;47(1):35-39. Epub 2017 Jun 6.
Critical Role for Monocytes/Macrophages in Rapid Progression to AIDS in Pediatric Simian Immunodeficiency Virus-Infected Rhesus Macaques.Sugimoto C, Merino KM, Hasegawa A, Wang X, Alvarez XA, Wakao H, Mori K, Kim WK, Veazey RS, Didier ES, Kuroda MJ. J Virol. 2017 Aug 10;91(17). Print 2017 Sep 1. Erratum in: J Virol. 2017 Oct 27;91(22):.
Colposcopic imaging using visible-light optical coherence tomography. Duan L, McRaven MD, Liu W, Shu X, Hu J, Sun C, Veazey RS, Hope TJ, Zhang HF. J Biomed Opt. 2017 May 1;22(5):56003.
Mucosal Vaccination with Heterologous Viral Vectored Vaccine Targeting Subdominant SIV Accessory Antigens Strongly Inhibits Early Viral Replication. Xu H, Andersson AM, Ragonnaud E, Boilesen D, Tolver A, Jensen BAH, Blanchard JL, Nicosia A, Folgori A, Colloca S, Cortese R, Thomsen AR, Christensen JP, Veazey RS, Holst PJ. EBioMedicine. 2017 Apr;18:204-215. doi: 10.1016/j.ebiom.2017.03.003. Epub 2017 Mar 8.
An HSV-2 Trivalent Vaccine Is Immunogenic in Rhesus Macaques and Highly Efficacious in Guinea Pigs. Awasthi S, Hook LM, Shaw CE, Pahar B, Stagray JA, Liu D, Veazey RS, Friedman HM. PLoS Pathog. 2017 Jan 19;13(1):e1006141. doi: 10.1371/journal.ppat.1006141. eCollection 2017 Jan.
Vaccination of rhesus macaques with the live-attenuated HSV-1 vaccine VC2 stimulates the proliferation of mucosal T cells and germinal center responses resulting in sustained production of highly neutralizing antibodies. Stanfield BA, Pahar B, Chouljenko VN, Veazey R, Kousoulas KG. Vaccine. 2017 Jan 23;35(4):536-543. doi: 10.1016/j.vaccine.2016.12.018. Epub 2016 Dec 22.
In vitro effects of the small-molecule protein kinase C agonists on HIV latency reactivation. Brogdon J, Ziani W, Wang X, Veazey RS, Xu H. Sci Rep. 2016 Dec 12;6:39032. doi: 10.1038/srep39032.
Infection of rhesus macaques with a pool of simian immunodeficiency virus with the envelope genes from acute HIV-1 infections. Krebs KC, Tian M, Asmal M, Ling B, Nelson K, Henry K, Gibson R, Li Y, Han W, Shattock RJ, Veazey RS, Letvin N, Arts EJ, Gao Y. AIDS Res Ther. 2016 Nov 25;13(1):41.
Phase Composition and Disorder in La2(Sn,Ti)2O7 Ceramics: New Insights from NMR Crystallography. Fernandes A, McKay D, Sneddon S, Dawson DM, Lawson S, Veazey R, Whittle KR, Ashbrook SE. J Phys Chem C Nanomater Interfaces. 2016 Sep 15;120(36):20288-20296. Epub 2016 Aug 24.
Introduction. Veazey RS, Marx PA. J Med Primatol. 2016 Oct;45(5):211. doi: 10.1111/jmp.12246. No abstract available.
Increases in Endogenous or Exogenous Progestins Promote Virus-Target Cell Interactions within the Non-human Primate Female Reproductive Tract.Carias AM, Allen SA, Fought AJ, Kotnik Halavaty K, Anderson MR, Jimenez ML, McRaven MD, Gioia CJ, Henning TR, Kersh EN, Smith JM, Pereira LE, Butler K, McNicholl SJ, Hendry RM, Kiser PF, Veazey RS, Hope TJ. PLoS Pathog. 2016 Sep 22;12(9):e1005885. eCollection 2016 Sep.
Cryopreservation of Human Mucosal Leukocytes. Hughes SM, Shu Z, Levy CN, Ferre AL, Hartig H, Fang C, Lentz G, Fialkow M, Kirby AC, Adams Waldorf KM, Veazey RS, Germann A, von Briesen H, McElrath MJ, Dezzutti CS, Sinclair E, Baker CA, Shacklett BL, Gao D, Hladik F. PLoS One. 2016 May 27;11(5):e0156293. eCollection 2016.
Th17 Cells Are Preferentially Infected Very Early after Vaginal Transmission of SIV in Macaques. Stieh DJ, Matias E, Xu H, Fought AJ, Blanchard JL, Marx PA, Veazey RS, Hope TJ. Cell Host Microbe. 2016 Apr 13;19(4):529-40.
Prevention of SHIV transmission by topical IFN-β treatment. Veazey RS, Pilch-Cooper HA, Hope TJ, Alter G, Carias AM, Sips M, Wang X, Rodriguez B, Sieg SF, Reich A, Wilkinson P, Cameron MJ, Lederman MM. Mucosal Immunol. 2016 Nov;9(6):1528-1536. Epub 2016 Feb 3.