Lillehoj, E., Salzar, R., Mervis, R., Chan, H., Ahmad, N., and Venkatesan, S. Purification and characterization of putative gag-pol protease of HIV. J. Virology 62:3053-3058, 1988.
Mervis, R.,Ahmad, N., Lillehoj, E., Raum, M., Salzar, R., Chan, H., and Venkatesan, S. The gag gene products of HIV-1; Alignment within the gag ORF, identification of post translation modifications and evidence of alternative gag precursors. J. Virology 62:3993-4002, 1988.
Venkatesan, S., Ahmad, N. and Mervis, R., Functional interaction of HIV trans regulating proteins Art/Trs and 3’ Orf. In The Control of Human Retrovirus Gene Expression (ed. by Franza, BR, et al.,), Cold Spring Harbor, pp. 104-118, 1988.
Ahmad, N., and Venkatesan, S. Nef protein of HIV-1 is a transcriptional repressor of HIV-1 LTR.Science 241:1481-1485 (1988).
Ahmad, N., Maitra, R.K., and Venkatesan, S. HIV-1 Rev induced modulation of Nef protein underlies temporal regulation of viral replication. Proc. Natl. Acad. Sci. (PNAS) USA, 86: 6111-6115, 1989.
Ahmad, N. and Venkatesan, S. Functional analysis of HIV-1 Nef and Rev. Vaccines89:57-67, 1989.
Holland, S, Ahmad, N, Maitra, R, Wingfield, P, Venkatesan, S. HIV-1 Rev recognizes a target sequence in the RRE RNA within the context of RNA secondary structure. J. Virology 64: 5966-75, 1990.
Maitra, R.K., Ahmad, N., Holland, S.M., and Venkatesan, S. HIV expression and transcription are repressed by Nef expressing Cell Lines. Virology, 182: 522-533, 1991.
Venkatesan, S., Holland, S., Ahmad, N., Wingfield, P., Maitra, R., and Lane, H.C. Molecular Functional Studies of HIV-1 Rev and Nef Protein. Advances in Molecular Biology and Targeted Treatment of AIDS (ed. by A. Kumar) 198-201, 1991.
Venkatesan, S., Holland, S., Nebreda, A., Maitra, R., Ahmad, N., Park, H., Wingfield, P., Santos, E. Regulation of HIV genome. Functional studies of Rev, Nef, and cis regulatory sequences of HIV-1. Genetic Structure and Regulation (ed. by W.A.Haseltine and F. Wong Staal) 323-344, 1991.
Ahmad, N., Kuramoto, I. K., and Baroudy, B. M. A ribonuclease protection assay for the direct detection and quantitation of HCV RNA. Clinical and Diagnostic Virology 1:233-244, 1993.
Ahmad, N., Schiff, G. M., and Baroudy, B.M. Detection of viremia by a one step polymerase chain reaction method in hepatitis C virus infection. Virus Research, 30: 303- 315, 1993.
Ahmad, N., Baroudy, B. M. and Baker, R. C. Genetic variability of HIV-1 mother-infant isolates. AIDS Res Hum Retroviruses 9: 90, 1993.
Ahmad, N. Mother to Child transmission of AIDS (Review). In “HIV” Society for AIDS Prevention and Education (SAPE’S) Publication, pp12-16, 1994.
Ahmad, N, Baroudy, B.M., Baker. R.C. and Chappey, C. Genetic analysis of HIV-1 envelope V3 region isolates from mothers and infants after perinatal transmission. J. Virology 69: 1001-1012, 1995.
Ahmad, N. Maternal-fetal transmission of human immunodeficiency virus type 1. J. Biomed. Sci., 3:238-250, 1996.
Clark, D., Ampel, N., Hallet, C., Yedavalli, VRK., Ahmad, N, and DeLuca, D. Peripheral blood from HIV-infected patients displays diminished T cell generation capacity. J. Infec. Dis. 176: 649-654, 1997.
Yedavalli, V.R.K., Matala, E, Chappey, C, and Ahmad, N. Conservation of an intact vif gene of human immunodeficiency virus type 1 during maternal-fetal transmission. J. Virology 72:1092-1102, 1998.
Yedavalli, V.R.K., Chappey, C. and Ahmad, N. Maintenance of an intact human immunodeficiency virus type 1 vpr gene following mother-to-infant transmission. J. Virology72:6937-6943, 1998.
Hahn, T., Matala, E., Chappey, C. andAhmad, N. Characterization of mother-infant HIV type 1 gag p17 sequences associated with perinatal transmission. AIDS Res Hum Retroviruses15:875-88, 1999.
Ahmad, N., Matala, E., Yedavalli, VRK., Hahn, T. and Husain. M. Characterization of HIV-1 involved in maternal-fetal transmission. Advances in Animal Virology351-370, 2000.
Ahmad, N. Molecular mechanisms of human immunodeficiency virus type 1 mother-infant transmission. Advances in Pharmacology 49:387-416, 2000.
Matala, E. Crandall, K.A, Baker, R. C. and Ahmad, N.Limited heterogeneity of human immunodeficiency virus type 1 in infected mothers correlates with lack of vertical transmission. AIDS Res Hum Retroviruses15:1481-1489, 2000.
Husain, M., Hahn, T., Yedavalli, VRK, and Ahmad, N. Characterization of HIV-1 tat sequences associated with perinatal transmission. AIDS Res Hum Retroviruses17:765-773, 2001.
Yedavalli, V.R.K. and Ahmad, N. Low conservation of HIV Type 1 vif and vpr genes in infected mothers correlates with lack of vertical transmission. AIDS Res Hum Retroviruses17:911-923, 2001.
Yedavalli, V.R.K., Husain, M., Horodner, A., and Ahmad, N. Molecular characterization of HIV type 1 vpu genes from mothers and infants following perinatal transmission. AIDS Res Hum Retroviruses17:1089-1098, 2001.
Hahn, T. and Ahmad, N. Genetic characterization of HIV-1 gag p17 matrix genes in isolates from infected mothers lacking perinatal transmission. AIDS Res Hum Retroviruses17:171673-1680, 2001.
Matala, E., Hahn, T., Yedavalli, V.R.K. and Ahmad, N. Biological Characterization of HIV-1 Envelope V3 Region Isolates from mother-infant pairs following perinatal transmission. AIDS Res Hum Retroviruses17:1725-1735, 2001.
Hahn, T. and Ahmad, N. Evaluation of genetic diversity of HIV-1 nef in mother infant isolates associated with vertical transmission. J. Biomed. Sci. 10:438-450, 2003.
Ahmad, N. The vertical transmission of HIV-1: Molecular and biological properties of the virus. Critical Reviews in Clinical Laboratory Sciences 42:1-34, 2005.
Sundaravaradan, V., Hahn, T, and Ahmad, N. Conservation of functional domains and limited heterogeneity of HIV-1 reverse transcriptase following vertical transmission. Retrovirology 2:35, 2005.
Ramakrishnan, R., Hussain, M., Holzer, A., Mehta, R., Sundaravaradan, V., and Ahmad, N. Evaluation of HIV type 1 rev gene diversity and functional domains following perinatal transmission. AIDS Res Hum Retroviruses 21 (12) 1035-1045, 2005.
Wellensiek, B,. Sundaravaradan, V., Ramakrishnan, R., and Ahmad, N. Molecular characterization of HIV-1 gag nucleocapsid gene associated with vertical transmission. Retrovirology3:21, 2006
Ramakrishnan, R., Mehta, R., Sundaravaradan, V., Davis, T., and Ahmad, N. Characterization of HIV-1 envelope gp41 genetic diversity and functional domains following perinatal transmission. Retrovirology 3:42, 2006.
Sundaravardan, V., Saxena, S., Ramakrishnan, R., Yedavalli, V.R.K., Harris, D., and Ahmad, N. Differential HIV-1 replication in neonatal and adult mononuclear cells is influenced at the level of HIV-1 gene expression. Proc. Natl. Acad. Sci. (PNAS)USA 103: 11701-11706, 2006.
Ramakrishnan, R. and Ahmad, N. Derivation of primary sequences and secondary structures of rev responsive element from HIV-1 infected mothers and infants following vertical transmission. Virology359: 201-211, 2007.
Sundaravardan, V., Das, S., Sehgal, S., Gopalan, S., Jameel, S and Ahmad, N. Role of HIV-1 subtype C envelope V3 to V5 regions in viral entry, coreceptor utilization and replication efficiency in primary lymphocytes and macrophages. Virology J. 4:126, 2007.
Ahmad, N. Molecular Mechanisms of HIV-1 Vertical Transmission and Pathogenesis in Infants. Advances in Pharmacology (ed. by K-T. Jeang, Elsevier Inc) Vol 56, 453-508, 2008.
Harris, D.T., Badowski, M., Ahmad, N., and Gaballa, M. The Potential of Cord Blood Stem Cells for Use in Regenerative Medicine. Expert Opinion on Biological Therapy 7(9): 1-12, 2007.
Mehta, R., Ramakrishnan, R., Doktor, K., Sundaravaradan, S. and Ahmad, N. Genetic characterization of HIV type 1 long terminal repeat following vertical transmission. AIDS Res Hum Retro 24 (3): 437-445, 2008.
Mehta, R., Sundaravaradan, V and Ahmad, N. Mutations generated in human immunodeficiency virus type 1 long terminal repeat during vertical transmission correlate with viral gene expression. Virology375:170–181, 2008.
Wellensiek, B., Ramakrishnan, R., Sundaravaradan, S., Mehta, R. and Ahmad, N. Differential HIV-1 integration in neonatal and adult target cells influences viral replication Virology 385:28-38, 2009.
Sundaravaradan, V., Mehta, R., Harris, DT, Zack, JA, and Ahmad, N. Differential expression and interaction of host factors augment HIV-1 gene expression in neonatal mononuclear cells. Virology 400:32-43, 2010
Ahmad, N. Molecular mechanisms of HIV-1 mother-to-child transmission and infection in neonatal target cells. Life Sciences doi:10.1016, 2010
Ahmad, N. Mehta, R., Harris, D.T. HIV-1 replication and gene expression occur at higher levels neonatal in naïve and memory T-lymphocytes compared with adult blood cells. Virology 413: 39-46, 2011.
Ahmad, N. Molecular mechanisms of HIV-1 infection in neonatal target cells. Future Virology 7 (5): 489-503, 2012.
Wellensiek, B., Ramakrishnan, R., Bashyal, B., Eason, Y., Gunatilaka, L., and Ahmad, N. Inhibition of HIV-1 replication by secondary metabolites from endophytic fungi of desert plants. The Open Virology Journal 7:41-49, 2013.
Ahmad, N. Influence of HIV genetic variability on vertical transmission and pathogenesis. J of Virology and Antiviral Research 4:1, 2015.
DEPARTMENTDepartment of Immunobiology
College of Medicine, University of Arizona