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Dr Venkatachalam Udhayakumar

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    Collapse Bibliographic 
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    1. Sáenz FE, Morton LC, Okoth SA, Valenzuela G, Vera-Arias CA, Vélez-Álvarez E, Lucchi NW, Castro LE, Udhayakumar V. Clonal population expansion in an outbreak of Plasmodium falciparum on the northwest coast of Ecuador. Malar J. 2015 Dec 10; 13 Suppl 1:497. PMID: 26651993.
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    2. Rogier E, Wiegand R, Moss D, Priest J, Angov E, Dutta S, Journel I, Jean SE, Mace K, Chang M, Lemoine JF, Udhayakumar V, Barnwell JW. Multiple comparisons analysis of serological data from an area of low Plasmodium falciparum transmission. Malar J. 2015 Nov 04; 14:436. PMID: 26537125.
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    3. Okoth SA, Chenet SM, Arrospide N, Gutierrez S, Cabezas C, Matta JA, Udhayakumar V. Molecular Investigation into a Malaria Outbreak in Cusco, Peru: Plasmodium falciparum BV1 Lineage is Linked to a Second Outbreak in Recent Times. Am J Trop Med Hyg. 2016 Jan; 94(1):128-31. PMID: 26483121.
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    4. Lucchi NW, Komino F, Okoth SA, Goldman I, Onyona P, Wiegand RE, Juma E, Shi YP, Barnwell JW, Udhayakumar V, Kariuki S. In Vitro and Molecular Surveillance for Antimalarial Drug Resistance in Plasmodium falciparum Parasites in Western Kenya Reveals Sustained Artemisinin Sensitivity and Increased Chloroquine Sensitivity. Antimicrob Agents Chemother. 2015 Dec; 59(12):7540-7. PMID: 26392510.
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    5. Griffing SM, Tauil PL, Udhayakumar V, Silva-Flannery L. A historical perspective on malaria control in Brazil. Mem Inst Oswaldo Cruz. 2015 Sep; 110(6):701-18. PMID: 26517649.
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    6. Plucinski MM, Talundzic E, Morton L, Dimbu PR, Macaia AP, Fortes F, Goldman I, Lucchi N, Stennies G, MacArthur JR, Udhayakumar V. Reply to "no robust evidence of lumefantrine resistance". Antimicrob Agents Chemother. 2015 Sep; 59(9):5867-8. PMID: 26276896.
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    7. Talundzic E, Chenet SM, Goldman IF, Patel DS, Nelson JA, Plucinski MM, Barnwell JW, Udhayakumar V. Genetic Analysis and Species Specific Amplification of the Artemisinin Resistance-Associated Kelch Propeller Domain in P. falciparum and P. vivax. PLoS One. 2015; 10(8):e0136099. PMID: 26292024.
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    8. Plucinski MM, Morton L, Bushman M, Dimbu PR, Udhayakumar V. Robust Algorithm for Systematic Classification of Malaria Late Treatment Failures as Recrudescence or Reinfection Using Microsatellite Genotyping. Antimicrob Agents Chemother. 2015 Oct; 59(10):6096-100. PMID: 26195521.
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    9. Murillo Solano C, Akinyi Okoth S, Abdallah JF, Pava Z, Dorado E, Incardona S, Huber CS, Macedo de Oliveira A, Bell D, Udhayakumar V, Barnwell JW. Deletion of Plasmodium falciparum Histidine-Rich Protein 2 (pfhrp2) and Histidine-Rich Protein 3 (pfhrp3) Genes in Colombian Parasites. PLoS One. 2015; 10(7):e0131576. PMID: 26151448.
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    10. Akinyi Okoth S, Abdallah JF, Ceron N, Adhin MR, Chandrabose J, Krishnalall K, Huber CS, Goldman IF, Macedo de Oliveira A, Barnwell JW, Udhayakumar V. Variation in Plasmodium falciparum Histidine-Rich Protein 2 (Pfhrp2) and Plasmodium falciparum Histidine-Rich Protein 3 (Pfhrp3) Gene Deletions in Guyana and Suriname. PLoS One. 2015; 10(5):e0126805. PMID: 25978499.
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    11. Baldeviano GC, Okoth SA, Arrospide N, Gonzalez RV, Sánchez JF, Macedo S, Conde S, Tapia LL, Salas C, Gamboa D, Herrera Y, Edgel KA, Udhayakumar V, Lescano AG. Molecular Epidemiology of Plasmodium falciparum Malaria Outbreak, Tumbes, Peru, 2010-2012. Emerg Infect Dis. 2015 May; 21(5):797-803. PMID: 25897626.
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    12. Talundzic E, Okoth SA, Congpuong K, Plucinski MM, Morton L, Goldman IF, Kachur PS, Wongsrichanalai C, Satimai W, Barnwell JW, Udhayakumar V. Correction: selection and spread of artemisinin-resistant alleles in Thailand prior to the global artemisinin resistance containment campaign. PLoS Pathog. 2015 Apr; 11(4):e1004862. PMID: 25901903.
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    13. Lucchi NW, Okoth SA, Komino F, Onyona P, Goldman IF, Ljolje D, Shi YP, Barnwell JW, Udhayakumar V, Kariuki S. Increasing prevalence of a novel triple-mutant dihydropteroate synthase genotype in Plasmodium falciparum in western Kenya. Antimicrob Agents Chemother. 2015 Jul; 59(7):3995-4002. PMID: 25896703.
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    14. Talundzic E, Okoth SA, Congpuong K, Plucinski MM, Morton L, Goldman IF, Kachur PS, Wongsrichanalai C, Satimai W, Barnwell JW, Udhayakumar V. Selection and spread of artemisinin-resistant alleles in Thailand prior to the global artemisinin resistance containment campaign. PLoS Pathog. 2015 Apr; 11(4):e1004789. PMID: 25836766.
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    15. Masanja IM, McMorrow ML, Maganga MB, Sumari D, Udhayakumar V, McElroy PD, Kachur SP, Lucchi NW. Quality assurance of malaria rapid diagnostic tests used for routine patient care in rural Tanzania: microscopy versus real-time polymerase chain reaction. Malar J. 2015 Feb 19; 14:85. PMID: 25889613.
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    16. Singh N, Bharti PK, Singh MP, Singh R, Yeboah-Antwi K, Desai M, Udhayakumar V, Muniyandi M, Hamer DH, Wylie BJ. What is the burden of submicroscopic malaria in pregnancy in central India? Pathog Glob Health. 2015 Feb; 109(1):30-8. PMID: 25627878.
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    17. Abdallah JF, Okoth SA, Fontecha GA, Torres RE, Banegas EI, Matute ML, Bucheli ST, Goldman IF, de Oliveira AM, Barnwell JW, Udhayakumar V. Prevalence of pfhrp2 and pfhrp3 gene deletions in Puerto Lempira, Honduras. Malar J. 2015 Jan 21; 14:19. PMID: 25604310.
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    18. Lucchi NW, Karell MA, Journel I, Rogier E, Goldman I, Ljolje D, Huber C, Mace KE, Jean SE, Akom EE, Oscar R, Buteau J, Boncy J, Barnwell JW, Udhayakumar V. PET-PCR method for the molecular detection of malaria parasites in a national malaria surveillance study in Haiti, 2011. Malar J. 2014 Nov 26; 13:462. PMID: 25428550.
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    19. Plucinski MM, Talundzic E, Morton L, Dimbu PR, Macaia AP, Fortes F, Goldman I, Lucchi N, Stennies G, MacArthur JR, Udhayakumar V. Efficacy of artemether-lumefantrine and dihydroartemisinin-piperaquine for treatment of uncomplicated malaria in children in Zaire and Uíge Provinces, angola. Antimicrob Agents Chemother. 2015 Jan; 59(1):437-43. PMID: 25367912.
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    20. Carrel M, Patel J, Taylor SM, Janko M, Mwandagalirwa MK, Tshefu AK, Escalante AA, McCollum A, Alam MT, Udhayakumar V, Meshnick S, Emch M. The geography of malaria genetics in the Democratic Republic of Congo: A complex and fragmented landscape. Soc Sci Med. 2015 May; 133:233-41. PMID: 25459204.
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    21. Griffing SM, Villegas L, Udhayakumar V. Malaria control and elimination, Venezuela, 1800s –1970s. Emerg Infect Dis. 2014 Oct; 20(10):1697-704. PMID: 25396258.
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    22. Plucinski MM, Huber CS, Akinyi S, Dalton W, Eschete M, Grady K, Silva-Flannery L, Mathison BA, Udhayakumar V, Arguin PM, Barnwell JW. Novel Mutation in Cytochrome B of Plasmodium falciparum in One of Two Atovaquone-Proguanil Treatment Failures in Travelers Returning From Same Site in Nigeria. Open Forum Infect Dis. 2014 Sep; 1(2):ofu059. PMID: 25734129.
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    23. Ahmed R, Singh N, ter Kuile FO, Bharti PK, Singh PP, Desai M, Udhayakumar V, Terlouw DJ. Placental infections with histologically confirmed Plasmodium falciparum are associated with adverse birth outcomes in India: a cross-sectional study. Malar J. 2014 Jun 13; 13:232. PMID: 24927762.
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    24. Patel JC, Taylor SM, Juliao PC, Parobek CM, Janko M, Gonzalez LD, Ortiz L, Padilla N, Tshefu AK, Emch M, Udhayakumar V, Lindblade K, Meshnick SR. Genetic Evidence of Importation of Drug-Resistant Plasmodium falciparum to Guatemala from the Democratic Republic of the Congo. Emerg Infect Dis. 2014 Jun; 20(6):932-40. PMID: 24856348.
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    25. Patel JC, Lucchi NW, Srivastava P, Lin JT, Sug-Aram R, Aruncharus S, Bharti PK, Shukla MM, Congpuong K, Satimai W, Singh N, Udhayakumar V, Meshnick SR. Field evaluation of a real-time fluorescence loop-mediated isothermal amplification assay, RealAmp, for the diagnosis of malaria in Thailand and India. J Infect Dis. 2014 Oct 15; 210(8):1180-7. PMID: 24795480.
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    26. Sridaran S, Rodriguez B, Soto AM, Macedo De Oliveira A, Udhayakumar V. Molecular analysis of chloroquine and sulfadoxine-pyrimethamine resistance-associated alleles in Plasmodium falciparum isolates from Nicaragua. Am J Trop Med Hyg. 2014 May; 90(5):840-5. PMID: 24615126.
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    27. McCollum AM, Soberon V, Salas CJ, Santolalla ML, Udhayakumar V, Escalante AA, Graf PC, Durand S, Cabezas C, Bacon DJ. Genetic variation and recurrent parasitaemia in Peruvian Plasmodium vivax populations. Malar J. 2014 Feb 24; 13:67. PMID: 24568141.
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    28. Talundzic E, Maganga M, Masanja IM, Peterson DS, Udhayakumar V, Lucchi NW. Field evaluation of the photo-induced electron transfer fluorogenic primers (PET) real-time PCR for the detection of Plasmodium falciparum in Tanzania. Malar J. 2014 Jan 27; 13:31. PMID: 24467985.
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    29. Quashie NB, Duah NO, Abuaku B, Quaye L, Ayanful-Torgby R, Akwoviah GA, Kweku M, Johnson JD, Lucchi NW, Udhayakumar V, Duplessis C, Kronmann KC, Koram KA. A SYBR Green 1-based in vitro test of susceptibility of Ghanaian Plasmodium falciparum clinical isolates to a panel of anti-malarial drugs. Malar J. 2013 Dec 17; 12:450. PMID: 24341604.
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    30. Akinyi S, Hayden T, Gamboa D, Torres K, Bendezu J, Abdallah JF, Griffing SM, Quezada WM, Arrospide N, De Oliveira AM, Lucas C, Magill AJ, Bacon DJ, Barnwell JW, Udhayakumar V. Multiple genetic origins of histidine-rich protein 2 gene deletion in Plasmodium falciparum parasites from Peru. Sci Rep. 2013 Sep 30; 3:2797. PMID: 24077522.
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    31. Juliao PC, Sosa S, Gonzalez LD, Padilla N, Ortiz L, Goldman I, Udhayakumar V, Lindblade KA. Importation of chloroquine-resistant Plasmodium falciparum by Guatemalan peacekeepers returning from the Democratic Republic of the Congo. Malar J. 2013 Sep 23; 12:344. PMID: 24060234.
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    32. Griffing SM, Gamboa D, Udhayakumar V. The history of 20th century malaria control in Peru. Malar J. 2013 Aug 30; 12:303. PMID: 24001096.
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    33. Hwang J, Alemayehu BH, Reithinger R, Tekleyohannes SG. In vivo efficacy of artemether-lumefantrine and chloroquine against Plasmodium vivax: a randomized open label trial in central Ethiopia. PLoS One. 2013; 8(5):e63433. PMID: 23717423.
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    34. Lucchi NW, Oberstaller J, Kissinger JC, Udhayakumar V. Malaria diagnostics and surveillance in the post-genomic era. Public Health Genomics. 2013; 16(1-2):37-43. PMID: 23548716.
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    35. Griffing SM, Viana GM, Mixson-Hayden T, Sridaran S, Alam MT, de Oliveira AM, Barnwell JW, Escalante AA, Povoa MM, Udhayakumar V. Historical shifts in Brazilian P. falciparum population structure and drug resistance alleles. PLoS One. 2013; 8(3):e58984. PMID: 23554964.
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    36. Mejia Torres RE, Banegas EI, Mendoza M, Diaz C, Bucheli ST, Fontecha GA, Alam MT, Goldman I, Udhayakumar V, Zambrano JO. Efficacy of chloroquine for the treatment of uncomplicated Plasmodium falciparum malaria in Honduras. Am J Trop Med Hyg. 2013 May; 88(5):850-4. PMID: 23458957.
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    37. Lucchi NW, Narayanan J, Karell MA, Xayavong M, Kariuki S, DaSilva AJ, Hill V, Udhayakumar V. Molecular diagnosis of malaria by photo-induced electron transfer fluorogenic primers: PET-PCR. PLoS One. 2013; 8(2):e56677. PMID: 23437209.
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    38. Taylor SM, Antonia AL, Parobek CM, Juliano JJ, Janko M, Emch M, Alam MT, Udhayakumar V, Tshefu AK, Meshnick SR. Plasmodium falciparum sulfadoxine resistance is geographically and genetically clustered within the DR Congo. Sci Rep. 2013; 3:1165. PMID: 23372922.
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    39. Patel JC, Oberstaller J, Xayavong M, Narayanan J, DeBarry JD, Srinivasamoorthy G, Villegas L, Escalante AA, DaSilva A, Peterson DS, Barnwell JW, Kissinger JC, Udhayakumar V, Lucchi NW. Real-time loop-mediated isothermal amplification (RealAmp) for the species-specific identification of Plasmodium vivax. PLoS One. 2013; 8(1):e54986. PMID: 23349994.
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    40. Singh PP, Lucchi NW, Blackstock A, Udhayakumar V, Singh N. Intervillous macrophage migration inhibitory factor is associated with adverse birth outcomes in a study population in Central India. PLoS One. 2012; 7(12):e51678. PMID: 23272137.
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    41. Zeeshan M, Alam MT, Vinayak S, Bora H, Tyagi RK, Alam MS, Choudhary V, Mittra P, Lumb V, Bharti PK, Udhayakumar V, Singh N, Jain V, Singh PP, Sharma YD. Genetic variation in the Plasmodium falciparum circumsporozoite protein in India and its relevance to RTS,S malaria vaccine. PLoS One. 2012; 7(8):e43430. PMID: 22912873.
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    42. Singh N, Singh MP, Wylie BJ, Hussain M, Kojo YA, Shekhar C, Sabin L, Desai M, Udhayakumar V, Hamer DH. Malaria prevalence among pregnant women in two districts with differing endemicity in Chhattisgarh, India. Malar J. 2012 Aug 10; 11:274. PMID: 22882903.
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    43. Fontecha GA, Mendoza M, Banegas E, Poorak M, De Oliveira AM, Mancero T, Udhayakumar V, Lucchi NW, Mejia RE. Comparison of molecular tests for the diagnosis of malaria in Honduras. Malar J. 2012 Apr 18; 11:119. PMID: 22513192.
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    44. Zhang L, Yesupriya A, Hu DJ, Chang MH, Dowling NF, Ned RM, Udhayakumar V, Lindegren ML, Khudyakov Y. Variants in ABCB1, TGFB1, and XRCC1 genes and susceptibility to viral hepatitis A infection in Mexican Americans. Hepatology. 2012 Apr; 55(4):1008-18. PMID: 22135187.
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    45. McCollum AM, Schneider KA, Griffing SM, Zhou Z, Kariuki S, Ter-Kuile F, Shi YP, Slutsker L, Lal AA, Udhayakumar V, Escalante AA. Differences in selective pressure on dhps and dhfr drug resistant mutations in western Kenya. Malar J. 2012 Mar 22; 11:77. PMID: 22439637.
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    46. Lucchi NW, Poorak M, Oberstaller J, DeBarry J, Srinivasamoorthy G, Goldman I, Xayavong M, da Silva AJ, Peterson DS, Barnwell JW, Kissinger J, Udhayakumar V. A new single-step PCR assay for the detection of the zoonotic malaria parasite Plasmodium knowlesi. PLoS One. 2012; 7(2):e31848. PMID: 22363751.
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    47. Jain V, Lucchi NW, Wilson NO, Blackstock AJ, Nagpal AC, Joel PK, Singh MP, Udhayakumar V, Stiles JK, Singh N. Plasma levels of angiopoietin-1 and -2 predict cerebral malaria outcome in Central India. Malar J. 2011 Dec 23; 10:383. PMID: 22192385.
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    48. Rawasia WF, Sridaran S, Patel JC, Abdallah J, Ghanchi NK, Barnwell JW, Escalante AA, Udhayakumar V, Beg MA. Genetic backgrounds of the Plasmodium falciparum chloroquine resistant transporter (pfcrt) alleles in Pakistan. Infect Genet Evol. 2012 Mar; 12(2):278-81. PMID: 22138496.
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    49. Griffing SM, Mixson-Hayden T, Sridaran S, Alam MT, McCollum AM, Cabezas C, Marquiño Quezada W, Barnwell JW, De Oliveira AM, Lucas C, Arrospide N, Escalante AA, Bacon DJ, Udhayakumar V. South American Plasmodium falciparum after the malaria eradication era: clonal population expansion and survival of the fittest hybrids. PLoS One. 2011; 6(9):e23486. PMID: 21949680.
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    50. Demas A, Oberstaller J, DeBarry J, Lucchi NW, Srinivasamoorthy G, Sumari D, Kabanywanyi AM, Villegas L, Escalante AA, Kachur SP, Barnwell JW, Peterson DS, Udhayakumar V, Kissinger JC. Applied genomics: data mining reveals species-specific malaria diagnostic targets more sensitive than 18S rRNA. J Clin Microbiol. 2011 Jul; 49(7):2411-8. PMID: 21525225.
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    51. Alam MT, de Souza DK, Vinayak S, Griffing SM, Poe AC, Duah NO, Ghansah A, Asamoa K, Slutsker L, Wilson MD, Barnwell JW, Udhayakumar V, Koram KA. Selective sweeps and genetic lineages of Plasmodium falciparum drug -resistant alleles in Ghana. J Infect Dis. 2011 Jan 15; 203(2):220-7. PMID: 21288822.
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    52. Lucchi NW, Jain V, Wilson NO, Singh N, Udhayakumar V, Stiles JK. Potential serological biomarkers of cerebral malaria. Dis Markers. 2011; 31(6):327-35. PMID: 22182805.
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    53. Wilson NO, Jain V, Roberts CE, Lucchi N, Joel PK, Singh MP, Nagpal AC, Dash AP, Udhayakumar V, Singh N, Stiles JK. CXCL4 and CXCL10 predict risk of fatal cerebral malaria. Dis Markers. 2011; 30(1):39-49. PMID: 21508508.
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    54. Lucchi NW, Demas A, Narayanan J, Sumari D, Kabanywanyi A, Kachur SP, Barnwell JW, Udhayakumar V. Real-time fluorescence loop mediated isothermal amplification for the diagnosis of malaria. PLoS One. 2010 Oct 29; 5(10):e13733. PMID: 21060829.
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    55. Alam MT, Vinayak S, Congpuong K, Wongsrichanalai C, Satimai W, Slutsker L, Escalante AA, Barnwell JW, Udhayakumar V. Tracking origins and spread of sulfadoxine-resistant Plasmodium falciparum dhps alleles in Thailand. Antimicrob Agents Chemother. 2011 Jan; 55(1):155-64. PMID: 20956597.
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    56. Wylie BJ, Hashmi AH, Singh N, Singh MP, Tuchman J, Hussain M, Sabin L, Yeboah-Antwi K, Banerjee C, Brooks MI, Desai M, Udhayakumar V, Macleod WB, Dash AP, Hamer DH. Availability and utilization of malaria prevention strategies in pregnancy in eastern India. BMC Public Health. 2010 Sep 17; 10:557. PMID: 20849590.
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    57. Sridaran S, McClintock SK, Syphard LM, Herman KM, Barnwell JW, Udhayakumar V. Anti-folate drug resistance in Africa: meta-analysis of reported dihydrofolate reductase (dhfr) and dihydropteroate synthase (dhps) mutant genotype frequencies in African Plasmodium falciparum parasite populations. Malar J. 2010 Aug 30; 9:247. PMID: 20799995.
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    58. Vinayak S, Alam MT, Sem R, Shah NK, Susanti AI, Lim P, Muth S, Maguire JD, Rogers WO, Fandeur T, Barnwell JW, Escalante AA, Wongsrichanalai C, Ariey F, Meshnick SR, Udhayakumar V. Multiple genetic backgrounds of the amplified Plasmodium falciparum multidrug resistance (pfmdr1) gene and selective sweep of 184F mutation in Cambodia. J Infect Dis. 2010 May 15; 201(10):1551-60. PMID: 20367478.
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    59. Pacheco MA, Ryan EM, Poe AC, Basco L, Udhayakumar V, Collins WE, Escalante AA. Evidence for negative selection on the gene encoding rhoptry-associated protein 1 (RAP-1) in Plasmodium spp. Infect Genet Evol. 2010 Jul; 10(5):655-61. PMID: 20363375.
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    60. Mixson-Hayden T, Lucchi NW, Udhayakumar V. Evaluation of three PCR-based diagnostic assays for detecting mixed Plasmodium infection. BMC Res Notes. 2010 Mar 31; 3:88. PMID: 20356398.
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    61. Zhang L, Prather D, Vanden Eng J, Crawford S, Kariuki S, ter Kuile F, Terlouw D, Nahlen B, Lal AA, Slutsker L, Udhayakumar V, Shi YP. Polymorphisms in genes of interleukin 12 and its receptors and their association with protection against severe malarial anaemia in children in western Kenya. Malar J. 2010 Mar 29; 9:87. PMID: 20350312.
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    62. Vinayak S, Alam MT, Mixson-Hayden T, McCollum AM, Sem R, Shah NK, Lim P, Muth S, Rogers WO, Fandeur T, Barnwell JW, Escalante AA, Wongsrichanalai C, Ariey F, Meshnick SR, Udhayakumar V. Origin and evolution of sulfadoxine resistant Plasmodium falciparum. PLoS Pathog. 2010 Mar 26; 6(3):e1000830. PMID: 20360965.
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    63. Griffing S, Syphard L, Sridaran S, McCollum AM, Mixson-Hayden T, Vinayak S, Villegas L, Barnwell JW, Escalante AA, Udhayakumar V. pfmdr1 amplification and fixation of pfcrt chloroquine resistance alleles in Plasmodium falciparum in Venezuela. Antimicrob Agents Chemother. 2010 Apr; 54(4):1572-9. PMID: 20145087.
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    64. Mixson-Hayden T, Jain V, McCollum AM, Poe A, Nagpal AC, Dash AP, Stiles JK, Udhayakumar V, Singh N. Evidence of selective sweeps in genes conferring resistance to chloroquine and pyrimethamine in Plasmodium falciparum isolates in India. Antimicrob Agents Chemother. 2010 Mar; 54(3):997-1006. PMID: 20038626.
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    65. Hamer DH, Singh MP, Wylie BJ, Yeboah-Antwi K, Tuchman J, Desai M, Udhayakumar V, Gupta P, Brooks MI, Shukla MM, Awasthy K, Sabin L, MacLeod WB, Dash AP, Singh N. Burden of malaria in pregnancy in Jharkhand State, India. Malar J. 2009 Sep 03; 8:210. PMID: 19728882.
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    66. Jain V, McClintock S, Nagpal AC, Dash AP, Stiles JK, Udhayakumar V, Singh N, Lucchi NW. Macrophage migration inhibitory factor is associated with mortality in cerebral malaria patients in India. BMC Res Notes. 2009 Mar 06; 2:36. PMID: 19284533.
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    67. Bacon DJ, McCollum AM, Griffing SM, Salas C, Soberon V, Santolalla M, Haley R, Tsukayama P, Lucas C, Escalante AA, Udhayakumar V. Dynamics of malaria drug resistance patterns in the Amazon basin region following changes in Peruvian national treatment policy for uncomplicated malaria. Antimicrob Agents Chemother. 2009 May; 53(5):2042-51. PMID: 19258269.
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    68. Vinayak S, Rathore D, Kariuki S, Slutsker L, Shi YP, Villegas L, Escalante AA, Udhayakumar V. Limited genetic variation in the Plasmodium falciparum heme detoxification protein (HDP). Infect Genet Evol. 2009 Mar; 9(2):286-9. PMID: 19135554.
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    69. Ned RM, Price AE, Crawford SB, Ayisi JG, van Eijk AM, Otieno JA, Nahlen BL, Steketee RW, Slutsker L, Shi YP, Lanar DE, Udhayakumar V. Effect of placental malaria and HIV infection on the antibody responses to Plasmodium falciparum in infants. J Infect Dis. 2008 Dec 01; 198(11):1609-19. PMID: 18928377.
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    70. Jain V, Nagpal AC, Joel PK, Shukla M, Singh MP, Gupta RB, Dash AP, Mishra SK, Udhayakumar V, Stiles JK, Singh N. Burden of cerebral malaria in central India (2004-2007). Am J Trop Med Hyg. 2008 Oct; 79(4):636-42. PMID: 18840756.
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    71. Kaba SA, Price A, Zhou Z, Sundaram V, Schnake P, Goldman IF, Lal AA, Udhayakumar V, Todd CW. Immune responses of mice with different genetic backgrounds to improved multiepitope, multitarget malaria vaccine candidate antigen FALVAC-1A. Clin Vaccine Immunol. 2008 Nov; 15(11):1674-83. PMID: 18784343.
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    72. McCollum AM, Basco LK, Tahar R, Udhayakumar V, Escalante AA. Hitchhiking and selective sweeps of Plasmodium falciparum sulfadoxine and pyrimethamine resistance alleles in a population from central Africa. Antimicrob Agents Chemother. 2008 Nov; 52(11):4089-97. PMID: 18765692.
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    73. Lucchi NW, Tongren JE, Jain V, Nagpal AC, Kauth CW, Woehlbier U, Bujard H, Dash AP, Singh N, Stiles JK, Udhayakumar V. Antibody responses to the merozoite surface protein-1 complex in cerebral malaria patients in India. Malar J. 2008 Jul 04; 7:121. PMID: 18601721.
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    74. Jain V, Armah HB, Tongren JE, Ned RM, Wilson NO, Crawford S, Joel PK, Singh MP, Nagpal AC, Dash AP, Udhayakumar V, Singh N, Stiles JK. Plasma IP-10, apoptotic and angiogenic factors associated with fatal cerebral malaria in India. Malar J. 2008 May 19; 7:83. PMID: 18489763.
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    75. Hamel MJ, Poe A, Bloland P, McCollum A, Zhou Z, Shi YP, Ouma P, Otieno K, Vulule J, Escalante A, Udhayakumar V, Slutsker L. Dihydrofolate reductase I164L mutations in Plasmodium falciparum isolates: clinical outcome of 14 Kenyan adults infected with parasites harbouring the I164L mutation. Trans R Soc Trop Med Hyg. 2008 Apr; 102(4):338-45. PMID: 18321547.
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    76. Zhou Z, Griffing SM, de Oliveira AM, McCollum AM, Quezada WM, Arrospide N, Escalante AA, Udhayakumar V. Decline in sulfadoxine-pyrimethamine-resistant alleles after change in drug policy in the Amazon region of Peru. Antimicrob Agents Chemother. 2008 Feb; 52(2):739-41. PMID: 18025120.
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    77. Armah HB, Wilson NO, Sarfo BY, Powell MD, Bond VC, Anderson W, Adjei AA, Gyasi RK, Tettey Y, Wiredu EK, Tongren JE, Udhayakumar V, Stiles JK. Cerebrospinal fluid and serum biomarkers of cerebral malaria mortality in Ghanaian children. Malar J. 2007 Nov 12; 6:147. PMID: 17997848.
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    78. van Eijk AM, Ayisi JG, Ter Kuile FO, Slutsker L, Shi YP, Udhayakumar V, Otieno JA, Kager PA, Lal RB, Steketee RW, Nahlen BL. HIV, malaria, and infant anemia as risk factors for postneonatal infant mortality among HIV-seropositive women in Kisumu, Kenya. J Infect Dis. 2007 Jul 01; 196(1):30-7. PMID: 17538880.
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    79. Keen J, Serghides L, Ayi K, Patel SN, Ayisi J, van Eijk A, Steketee R, Udhayakumar V, Kain KC. HIV impairs opsonic phagocytic clearance of pregnancy-associated malaria parasites. PLoS Med. 2007 May; 4(5):e181. PMID: 17535103.
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    80. McCollum AM, Mueller K, Villegas L, Udhayakumar V, Escalante AA. Common origin and fixation of Plasmodium falciparum dhfr and dhps mutations associated with sulfadoxine-pyrimethamine resistance in a low-transmission area in South America. Antimicrob Agents Chemother. 2007 Jun; 51(6):2085-91. PMID: 17283199.
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    81. Pacheco MA, Poe AC, Collins WE, Lal AA, Tanabe K, Kariuki SK, Udhayakumar V, Escalante AA. A comparative study of the genetic diversity of the 42kDa fragment of the merozoite surface protein 1 in Plasmodium falciparum and P. vivax. Infect Genet Evol. 2007 Mar; 7(2):180-7. PMID: 17010678.
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    82. Zhou Z, Poe AC, Limor J, Grady KK, Goldman I, McCollum AM, Escalante AA, Barnwell JW, Udhayakumar V. Pyrosequencing, a high-throughput method for detecting single nucleotide polymorphisms in the dihydrofolate reductase and dihydropteroate synthetase genes of Plasmodium falciparum. J Clin Microbiol. 2006 Nov; 44(11):3900-10. PMID: 16957045.
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    83. McCollum AM, Poe AC, Hamel M, Huber C, Zhou Z, Shi YP, Ouma P, Vulule J, Bloland P, Slutsker L, Barnwell JW, Udhayakumar V, Escalante AA. Antifolate resistance in Plasmodium falciparum: multiple origins and identification of novel dhfr alleles. J Infect Dis. 2006 Jul 15; 194(2):189-97. PMID: 16779725.
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    84. Zhou Z, Todd CW, Wohlhueter RM, Price A, Xiao L, Schnake P, Bonner PC, Martin AM, Goldman IF, De La Vega P, Udhayakumar V, Lal AA. Development, characterization and immunogenicity of a multi-stage, multi-valent Plasmodium falciparum vaccine antigen (FALVAC-1A) expressed in Escherichia coli. Hum Vaccin. 2006 Jan-Feb; 2(1):14-23. PMID: 17012909.
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    85. Collins WE, Galland GG, Barnwell JW, Udhayakumar V, Sullivan JS, Nace D, Tongren JE, Williams T, Roberts J, Shi YP, Lal AA. Preliminary observations on the efficacy of a recombinant multistage Plasmodium falciparum vaccine in Aotus nancymai monkeys. Am J Trop Med Hyg. 2005 Oct; 73(4):686-93. PMID: 16222010.
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    86. Chaisavaneeyakorn S, Lucchi N, Abramowsky C, Othoro C, Chaiyaroj SC, Shi YP, Nahlen BL, Peterson DS, Moore JM, Udhayakumar V. Immunohistological characterization of macrophage migration inhibitory factor expression in Plasmodium falciparum-infected placentas. Infect Immun. 2005 Jun; 73(6):3287-93. PMID: 15908353.
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    87. Ned RM, Moore JM, Chaisavaneeyakorn S, Udhayakumar V. Modulation of immune responses during HIV-malaria co-infection in pregnancy. Trends Parasitol. 2005 Jun; 21(6):284-91. PMID: 15922250.
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    88. Bonner PC, Zhou Z, Mirel LB, Ayisi JG, Shi YP, van Eijk AM, Otieno JA, Nahlen BL, Steketee RW, Udhayakumar V. Placental malaria diminishes development of antibody responses to Plasmodium falciparum epitopes in infants residing in an area of western Kenya where P. falciparum is endemic. Clin Diagn Lab Immunol. 2005 Mar; 12(3):375-9. PMID: 15753250.
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    89. Moore JM, Chaisavaneeyakorn S, Perkins DJ, Othoro C, Otieno J, Nahlen BL, Shi YP, Udhayakumar V. Hemozoin differentially regulates proinflammatory cytokine production in human immunodeficiency virus-seropositive and -seronegative women with placental malaria. Infect Immun. 2004 Dec; 72(12):7022-9. PMID: 15557625.
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    90. ter Kuile FO, Parise ME, Verhoeff FH, Udhayakumar V, Newman RD, van Eijk AM, Rogerson SJ, Steketee RW. The burden of co-infection with human immunodeficiency virus type 1 and malaria in pregnant women in sub-saharan Africa. Am J Trop Med Hyg. 2004 Aug; 71(2 Suppl):41-54. PMID: 15331818.
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    91. Escalante AA, Cornejo OE, Rojas A, Udhayakumar V, Lal AA. Assessing the effect of natural selection in malaria parasites. Trends Parasitol. 2004 Aug; 20(8):388-95. PMID: 15246323.
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    92. Perkins DJ, Moore JM, Otieno J, Shi YP, Nahlen BL, Udhayakumar V, Lal AA. In vivo acquisition of hemozoin by placental blood mononuclear cells suppresses PGE2, TNF-alpha, and IL-10. Biochem Biophys Res Commun. 2003 Nov 28; 311(4):839-46. PMID: 14623257.
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    93. Boutlis CS, Lagog M, Chaisavaneeyakorn S, Misukonis MA, Bockarie MJ, Mgone CS, Wang Z, Morahan G, Weinberg JB, Udhayakumar V, Anstey NM. Plasma interleukin-12 in malaria-tolerant papua new guineans: inverse correlation with Plasmodium falciparum parasitemia and peripheral blood mononuclear cell nitric oxide synthase activity. Infect Immun. 2003 Nov; 71(11):6354-7. PMID: 14573655.
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    94. Moore JM, Shi YP, Othoro C, Nahlen BL, Lal AA, Udhayakumar V. Comparative flow cytometric analysis of term placental intervillous and peripheral blood from immediate postpartum women in Western kenya. Placenta. 2003 Aug; 24(7):779-85. PMID: 12852869.
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    95. Chaisavaneeyakorn S, Moore JM, Mirel L, Othoro C, Otieno J, Chaiyaroj SC, Shi YP, Nahlen BL, Lal AA, Udhayakumar V. Levels of macrophage inflammatory protein 1 alpha (MIP-1 alpha) and MIP-1 beta in intervillous blood plasma samples from women with placental malaria and human immunodeficiency virus infection. Clin Diagn Lab Immunol. 2003 Jul; 10(4):631-6. PMID: 12853396.
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    96. Chaisavaneeyakorn S, Othoro C, Shi YP, Otieno J, Chaiyaroj SC, Lal AA, Udhayakumar V. Relationship between plasma Interleukin-12 (IL-12) and IL-18 levels and severe malarial anemia in an area of holoendemicity in western Kenya. Clin Diagn Lab Immunol. 2003 May; 10(3):362-6. PMID: 12738632.
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    97. Ong'echa JM, Lal AA, Terlouw DJ, Ter Kuile FO, Kariuki SK, Udhayakumar V, Orago AS, Hightower AW, Nahlen BL, Shi YP. Association of interferon-gamma responses to pre-erythrocytic stage vaccine candidate antigens of Plasmodium falciparum in young Kenyan children with improved hemoglobin levels: XV. Asembo Bay Cohort Project. Am J Trop Med Hyg. 2003 May; 68(5):590-7. PMID: 12812352.
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    98. Dixit VD, Yang H, Udhayakumar V, Sridaran R. Gonadotropin-releasing hormone alters the T helper cytokine balance in the pregnant rat. Biol Reprod. 2003 Jun; 68(6):2215-21. PMID: 12606332.
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    99. Hobbs MR, Udhayakumar V, Levesque MC, Booth J, Roberts JM, Tkachuk AN, Pole A, Coon H, Kariuki S, Nahlen BL, Mwaikambo ED, Lal AL, Granger DL, Anstey NM, Weinberg JB. A new NOS2 promoter polymorphism associated with increased nitric oxide production and protection from severe malaria in Tanzanian and Kenyan children. Lancet. 2002 Nov 09; 360(9344):1468-75. PMID: 12433515.
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    100. Terlouw DJ, Aidoo MA, Udhayakumar V, Kolczak MS, Oloo AJ, Kager PA, Lal AA, Nahlen BL, Kuile FO. Increased efficacy of sulfadoxine-pyrimethamine in the treatment of uncomplicated falciparum malaria among children with sickle cell trait in Western Kenya. J Infect Dis. 2002 Dec 01; 186(11):1661-8. PMID: 12447744.
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    101. Chaisavaneeyakorn S, Moore JM, Othoro C, Otieno J, Chaiyaroj SC, Shi YP, Nahlen BL, Lal AA, Udhayakumar V. Immunity to placental malaria. IV. Placental malaria is associated with up-regulation of macrophage migration inhibitory factor in intervillous blood. J Infect Dis. 2002 Nov 01; 186(9):1371-5. PMID: 12402212.
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    102. Rafi-Janajreh A, Tongren JE, Kensil C, Hackett C, Candal F, Lal A, Udhayakumar V. Influence of adjuvants in inducing immune responses to different epitopes included in a multiepitope, multivalent, multistage Plasmodium falciparum candidate vaccine (FALVAC-1) in outbred mice. Exp Parasitol. 2002 May; 101(1):3-12. PMID: 12243733.
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    103. Aidoo M, Terlouw DJ, Kolczak MS, McElroy PD, ter Kuile FO, Kariuki S, Nahlen BL, Lal AA, Udhayakumar V. Protective effects of the sickle cell gene against malaria morbidity and mortality. Lancet. 2002 Apr 13; 359(9314):1311-2. PMID: 11965279.
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    104. Chaisavaneeyakorn S, Moore JM, Otieno J, Chaiyaroj SC, Perkins DJ, Shi YP, Nahlen BL, Lal AA, Udhayakumar V. Immunity to placental malaria. III. Impairment of interleukin(IL)-12, not IL-18, and interferon-inducible protein-10 responses in the placental intervillous blood of human immunodeficiency virus/malaria-coinfected women. J Infect Dis. 2002 Jan 01; 185(1):127-31. PMID: 11756993.
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    105. Aidoo M, McElroy PD, Kolczak MS, Terlouw DJ, ter Kuile FO, Nahlen B, Lal AA, Udhayakumar V. Tumor necrosis factor-alpha promoter variant 2 (TNF2) is associated with pre-term delivery, infant mortality, and malaria morbidity in western Kenya: Asembo Bay Cohort Project IX. Genet Epidemiol. 2001 Nov; 21(3):201-11. PMID: 11668577.
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    106. Udhayakumar V, Kariuki S, Kolczack M, Girma M, Roberts JM, Oloo AJ, Nahlen BL, Lal AA. Longitudinal study of natural immune responses to the Plasmodium falciparum apical membrane antigen (AMA-1) in a holoendemic region of malaria in western Kenya: Asembo Bay Cohort Project VIII. Am J Trop Med Hyg. 2001 Aug; 65(2):100-7. PMID: 11508382.
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    107. Moore JM, Ayisi J, Nahlen BL, Misore A, Lal AA, Udhayakumar V. Immunity to placental malaria. II. Placental antigen-specific cytokine responses are impaired in human immunodeficiency virus-infected women. J Infect Dis. 2000 Sep; 182(3):960-4. PMID: 10950798.
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    108. Shi YP, Das P, Holloway B, Udhayakumar V, Tongren JE, Candal F, Biswas S, Ahmad R, Hasnain SE, Lal AA. Development, expression, and murine testing of a multistage Plasmodium falciparum malaria vaccine candidate. Vaccine. 2000 Jun 15; 18(25):2902-14. PMID: 10812234.
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    109. Moore JM, Nahlen BL, Lal AA, Udhayakumar V. Immunologic memory in the placenta: a lymphocyte recirculation hypothesis. Med Hypotheses. 2000 Mar; 54(3):505-10. PMID: 10783499.
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    110. Aidoo M, Udhayakumar V. Field studies of cytotoxic T lymphocytes in malaria infections: implications for malaria vaccine development. Parasitol Today. 2000 Feb; 16(2):50-6. PMID: 10652487.
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    111. McNicholl JM, Downer MV, Udhayakumar V, Alper CA, Swerdlow DL. Host-pathogen interactions in emerging and re-emerging infectious diseases: a genomic perspective of tuberculosis, malaria, human immunodeficiency virus infection, hepatitis B, and cholera. Annu Rev Public Health. 2000; 21:15-46. PMID: 10884944.
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    112. Moore JM, Nahlen BL, Misore A, Lal AA, Udhayakumar V. Immunity to placental malaria. I. Elevated production of interferon-gamma by placental blood mononuclear cells is associated with protection in an area with high transmission of malaria. J Infect Dis. 1999 May; 179(5):1218-25. PMID: 10191226.
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    113. Bloland PB, Ruebush TK, McCormick JB, Ayisi J, Boriga DA, Oloo AJ, Beach R, Hawley W, Lal A, Nahlen B, Udhayakumar V, Campbell CC. Longitudinal cohort study of the epidemiology of malaria infections in an area of intense malaria transmission I. Description of study site, general methodology, and study population. Am J Trop Med Hyg. 1999 Apr; 60(4):635-40. PMID: 10348240.
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    114. Othoro C, Lal AA, Nahlen B, Koech D, Orago AS, Udhayakumar V. A low interleukin-10 tumor necrosis factor-alpha ratio is associated with malaria anemia in children residing in a holoendemic malaria region in western Kenya. J Infect Dis. 1999 Jan; 179(1):279-82. PMID: 9841855.
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    115. Shi YP, Udhayakumar V, Oloo AJ, Nahlen BL, Lal AA. Differential effect and interaction of monocytes, hyperimmune sera, and immunoglobulin G on the growth of asexual stage Plasmodium falciparum parasites. Am J Trop Med Hyg. 1999 Jan; 60(1):135-41. PMID: 9988337.
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    116. Moore JM, Nahlen BL, Lal AA, Udhayakumar V. Postpartum coma. Lancet. 1998 Aug 22; 352(9128):658. PMID: 9746060.
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    117. Udhayakumar V, Saekhou A, Fang S, Jue D, Wohlhueter RM, Lal AA. Immunogenicity of Plasmodium falciparum and Plasmodium vivax circumsporozoite protein repeat multiple antigen constructs (MAC). Vaccine. 1998 May-Jun; 16(9-10):982-8. PMID: 9682348.
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    118. Branch OH, Udhayakumar V, Hightower AW, Oloo AJ, Hawley WA, Nahlen BL, Bloland PB, Kaslow DC, Lal AA. A longitudinal investigation of IgG and IgM antibody responses to the merozoite surface protein-1 19-kiloDalton domain of Plasmodium falciparum in pregnant women and infants: associations with febrile illness, parasitemia, and anemia. Am J Trop Med Hyg. 1998 Feb; 58(2):211-9. PMID: 9502606.
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    119. Moore JM, Nahlen B, Ofulla AV, Caba J, Ayisi J, Oloo A, Misore A, Nahmias AJ, Lal AA, Udhayakumar V. A simple perfusion technique for isolation of maternal intervillous blood mononuclear cells from human placentae. J Immunol Methods. 1997 Nov 10; 209(1):93-104. PMID: 9448038.
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    120. Udhayakumar V, Ongecha JM, Shi YP, Aidoo M, Orago AS, Oloo AJ, Hawley WA, Nahlen BL, Hoffman SL, Weiss WR, Lal AA. Cytotoxic T cell reactivity and HLA-B35 binding of the variant Plasmodium falciparum circumsporozoite protein CD8+ CTL epitope in naturally exposed Kenyan adults. Eur J Immunol. 1997 Aug; 27(8):1952-7. PMID: 9295031.
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    121. Yang C, Collins WE, Xiao L, Saekhou AM, Reed RC, Nelson CO, Hunter RL, Jue DL, Fang S, Wohlhueter RM, Udhayakumar V, Lal AA. Induction of protective antibodies in Saimiri monkeys by immunization with a multiple antigen construct (MAC) containing the Plasmodium vivax circumsporozoite protein repeat region and a universal T helper epitope of tetanus toxin. Vaccine. 1997 Mar; 15(4):377-86. PMID: 9141208.
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    122. Reed RC, Verhuel AF, Hunter RL, Udhayakumar V, Louis-Wileman V, Jennings VJ, Jue DL, Wohlhueter RM, Lal AA. Rapid onset of malaria-induced mortality by immunizations with lipo-peptides: an experimental model to study deleterious immune responses and immunopathology in malaria. Vaccine. 1997 Jan; 15(1):65-70. PMID: 9041668.
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    123. Xiao L, Yang C, Nelson CO, Holloway BP, Udhayakumar V, Lal AA. Quantitation of RT-PCR amplified cytokine mRNA by aequorin-based bioluminescence immunoassay. J Immunol Methods. 1996 Dec 15; 199(2):139-47. PMID: 8982355.
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    124. Xiao L, Yang C, Dorovini-Zis K, Tandon NN, Ades EW, Lal AA, Udhayakumar V. Plasmodium falciparum: involvement of additional receptors in the cytoadherence of infected erythrocytes to microvascular endothelial cells. Exp Parasitol. 1996 Oct; 84(1):42-55. PMID: 8925881.
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    125. Shi YP, Sayed U, Qari SH, Roberts JM, Udhayakumar V, Oloo AJ, Hawley WA, Kaslow DC, Nahlen BL, Lal AA. Natural immune response to the C-terminal 19-kilodalton domain of Plasmodium falciparum merozoite surface protein 1. Infect Immun. 1996 Jul; 64(7):2716-23. PMID: 8698500.
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    126. Xiao L, Yang C, Patterson PS, Udhayakumar V, Lal AA. Sulfated polyanions inhibit invasion of erythrocytes by plasmodial merozoites and cytoadherence of endothelial cells to parasitized erythrocytes. Infect Immun. 1996 Apr; 64(4):1373-8. PMID: 8606103.
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    127. Lal AA, Hughes MA, Oliveira DA, Nelson C, Bloland PB, Oloo AJ, Hawley WE, Hightower AW, Nahlen BL, Udhayakumar V. Identification of T-cell determinants in natural immune responses to the Plasmodium falciparum apical membrane antigen (AMA-1) in an adult population exposed to malaria. Infect Immun. 1996 Mar; 64(3):1054-9. PMID: 8641760.
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    128. Oliveira DA, Udhayakumar V, Bloland P, Shi YP, Nahlen BL, Oloo AJ, Hawley WE, Lal AA. Genetic conservation of the Plasmodium falciparum apical membrane antigen-1 (AMA-1). Mol Biochem Parasitol. 1996 Feb-Mar; 76(1-2):333-6. PMID: 8920023.
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    129. Verheul AF, Udhayakumar V, Jue DL, Wohlhueter RM, Lal AA. Monopalmitic acid-peptide conjugates induce cytotoxic T cell responses against malarial epitopes: importance of spacer amino acids. J Immunol Methods. 1995 Jun 09; 182(2):219-26. PMID: 7540640.
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    130. Udhayakumar V, Anyona D, Kariuki S, Shi YP, Bloland PB, Branch OH, Weiss W, Nahlen BL, Kaslow DC, Lal AA. Identification of T and B cell epitopes recognized by humans in the C-terminal 42-kDa domain of the Plasmodium falciparum merozoite surface protein (MSP)-1. J Immunol. 1995 Jun 01; 154(11):6022-30. PMID: 7538540.
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    131. Yang C, Shi YP, Udhayakumar V, Alpers MP, Povoa MM, Hawley WA, Collins WE, Lal AA. Sequence variations in the non-repetitive regions of the liver stage-specific antigen-1 (LSA-1) of Plasmodium falciparum from field isolates. Mol Biochem Parasitol. 1995 May; 71(2):291-4. PMID: 7477115.
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    132. Wohlhueter RM, Parekh K, Udhayakumar V, Fang S, Lal AA. Analysis of binding of monoclonal antibody to a malarial peptide by surface plasmon resonance biosensor and integrated rate equations. J Immunol. 1994 Jul 01; 153(1):181-9. PMID: 8207235.
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    133. Udhayakumar V, Qari SH, Patterson P, Collins WE, Lal AA. Monoclonal antibodies to the circumsporozoite protein repeats of a Plasmodium vivax-like human malaria parasite and Plasmodium simiovale. Infect Immun. 1994 May; 62(5):2098-100. PMID: 8168975.
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    134. Udhayakumar V, Shi YP, Kumar S, Jue DL, Wohlhueter RM, Lal AA. Antigenic diversity in the circumsporozoite protein of Plasmodium falciparum abrogates cytotoxic-T-cell recognition. Infect Immun. 1994 Apr; 62(4):1410-3. PMID: 7510668.
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    135. Muthukkumar S, Udhayakumar V, Bondada S. Elevation of cytosolic calcium is sufficient to induce growth inhibition in a B cell lymphoma. Eur J Immunol. 1993 Oct; 23(10):2419-26. PMID: 7691606.
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    136. Shi YP, Udhayakumar V, Alpers MP, Povoa MM, Oloo AJ, Ruebush TK, Lal AA. Natural antibody responses against the non-repeat-sequence-based B-cell epitopes of the Plasmodium falciparum circumsporozoite protein. Infect Immun. 1993 Jun; 61(6):2425-33. PMID: 7684729.
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    137. Qari SH, Shi YP, Goldman IF, Udhayakumar V, Alpers MP, Collins WE, Lal AA. Identification of Plasmodium vivax-like human malaria parasite. Lancet. 1993 Mar 27; 341(8848):780-3. PMID: 8095999.
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    138. Udhayakumar V, Goud SN, Cross RJ, Subbarao B. Physiology of murine B lymphocytes. II. Life-spans of mitogen and thymus-independent antigen (type 2) reactive B lymphocytes from aged mice. Mech Ageing Dev. 1991 Dec 02; 61(2):135-47. PMID: 1824120.
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    139. Udhayakumar V, Muthukkumar S, Subbarao B. Cyclosporin A blocks surface IgM-mediated growth inhibition in an immature B lymphoma, BKS-2. Eur J Immunol. 1991 Oct; 21(10):2605-8. PMID: 1915562.
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    140. Udhayakumar V, Kumar L, Subbarao B. The influence of avidity on signaling murine B lymphocytes with monoclonal anti-IgM antibodies. Effects of B cell proliferation versus growth inhibition (tolerance) of an immature B cell lymphoma. J Immunol. 1991 Jun 15; 146(12):4120-9. PMID: 2040794.
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    141. Seth A, Nagarkatti M, Nagarkatti PS, Subbarao B, Udhayakumar V. Macrophages but not B cells from aged mice are defective in stimulating autoreactive T cells in vitro. Mech Ageing Dev. 1990 Mar 15; 52(2-3):107-24. PMID: 2325428.
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    142. Udhayakumar V, Brodeur PH, Rajagopalan MS, Zimmer S, Pollok KE, Subbarao B. Isolation and immunological characterization of a group of new B lymphomas from CBA mice. Clin Immunol Immunopathol. 1989 May; 51(2):240-51. PMID: 2649295.
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    143. Udhayakumar V, Muthukkaruppan V. Protective immunity induced by porin against Salmonella infection in mice. Indian J Med Res. 1989 May; 89:121-7. PMID: 2550363.
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    144. Udhayakumar V, Subbarao B, Seth A, Nagarkatti M, Nagarkatti PS. Impaired autoreactive T cell-induced T cell-T cell interaction in aged mice. Cell Immunol. 1988 Oct 15; 116(2):299-307. PMID: 3263214.
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    145. Udhayakumar V, Goud SN, Subbarao B. Physiology of murine B lymphocytes. I. Life-spans of anti-mu and haptenated Ficoll (thymus-independent antigen)-reactive B cells. Eur J Immunol. 1988 Oct; 18(10):1593-9. PMID: 3142780.
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    146. Udhayakumar V, Muthukkaruppan VR. An outer membrane protein (porin) as an eliciting antigen for delayed-type hypersensitivity in murine salmonellosis. Infect Immun. 1987 Mar; 55(3):822-4. PMID: 3028963.
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    147. Udhayakumar V, Muthukkaruppan VR. Protective immunity induced by outer membrane proteins of Salmonella typhimurium in mice. Infect Immun. 1987 Mar; 55(3):816-21. PMID: 3546142.
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    148. Natarajan M, Udhayakumar V, Krishnaraju K, Muthukkaruppan V. Role of outer membrane proteins in immunity against murine salmonellosis--1. Antibody response to crude outer membrane proteins of Salmonella typhimurium. Comp Immunol Microbiol Infect Dis. 1985; 8(1):9-16. PMID: 3905238.
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    149. Udhayakumar V, Muthukkaruppan V. Characteristics of live vaccines in relation to delayed-type hypersensitivity and protective immunity in murine experimental salmonellosis. Immunol Lett. 1983 Jun; 6(6):299-302. PMID: 6354924.
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