FIND

researchers

DISCOVER

relevant articles

PROMOTE

your research

now for free

Venkatachalam Udhayakumar

Research Profile

Disorders

Chemicals & Drugs

Geographic Areas

Kenya

Physiology

Co-author Network

Publications

TOP 3
Sean M Griffing; Tonya Mixson-Hayden; Marinete Marins Povoa; Sankar Sridaran; Mohammad Tauqeer Alam; John W Barnwell; Alexandre Macedo de Oliveira; Ananias A Escalante; Giselle M Rachid Viana; Venkatachalam Udhayakumar
Historical shifts in Brazilian P. falciparum population structure and drug resistance alleles.
Naomi W Lucchi; J Oberstaller; Jessica Kissinger; Venkatachalam Udhayakumar
Malaria diagnostics and surveillance in the post-genomic era.
Naomi W Lucchi; Jothikumar Narayanan; Maniphet V Xayavong; Alexandre J DaSilva; Vincent Hill; Mara A Karell; Simon Kariuki; Venkatachalam Udhayakumar
Molecular diagnosis of malaria by photo-induced electron transfer fluorogenic primers: PET-PCR.

Register for free to view:

Visualized networks:

See your personal network in
sophisticated graphical views

GeoTargeted Searches:

Locate experts around the world
and connect with global collaborators

Research Profiles:

See the research activity
of experts around the globe

Geonetwork of Venkatachalam Udhayakumar (preview)

Cities where this author has publications
Cities where co-authors of this author have publications

Flash Player Required

All Publications

2013: Sean M Griffing; Tonya Mixson-Hayden; Marinete Marins Povoa; Sankar Sridaran; Mohammad Tauqeer Alam; John W Barnwell; Alexandre Macedo de Oliveira; Ananias A Escalante; Giselle M Rachid Viana; Venkatachalam Udhayakumar
Historical shifts in Brazilian P. falciparum population structure and drug resistance alleles.
PloS one 2013;8(3):e58984.
2013: Naomi W Lucchi; J Oberstaller; Jessica Kissinger; Venkatachalam Udhayakumar
Malaria diagnostics and surveillance in the post-genomic era.
Public health genomics 2013;16(1-2):37-43.
2013: Naomi W Lucchi; Jothikumar Narayanan; Maniphet V Xayavong; Alexandre J DaSilva; Vincent Hill; Mara A Karell; Simon Kariuki; Venkatachalam Udhayakumar
Molecular diagnosis of malaria by photo-induced electron transfer fluorogenic primers: PET-PCR.
PloS one 2013;8(2):e56677.
2013: Steve M Taylor; Antoinette K Tshefu; Venkatachalam Udhayakumar; Christian M Parobek; Md Tauqeer Alam; Alejandro L Antonia; Michael Emch; Mark Janko; Jonathan Juliano; Steven R Meshnick
Plasmodium falciparum sulfadoxine resistance is geographically and genetically clustered within the DR Congo.
Scientific reports 2013;3():1165.
2013: Jaymin C Patel; David S Peterson; Ganesh Srinivasamoorthy; Venkatachalam Udhayakumar; Leopoldo Villegas; Maniphet Xayavong; John W Barnwell; Alexandre DaSilva; Jeremy D DeBarry; Ananias A Escalante; Jessica Kissinger; Jothikumar Narayanan; Jenna Oberstaller; Naomi W Lucchi
Real-time loop-mediated isothermal amplification (RealAmp) for the species-specific identification of Plasmodium vivax.
PloS one 2013;8(1):e54986.
2012: Lyna Zhang; Mary Lou Lindegren; Renée M Ned; Venkatachalam Udhayakumar; Ajay Yesupriya; Man-huei Chang; Nicole Dowling; Dale J Hu; Yury Khudyakov
Variants in ABCB1, TGFB1, and XRCC1 genes and susceptibility to viral hepatitis A infection in Mexican Americans.
Hepatology (Baltimore, Md.) 2012;55(4):1008-18.
2012: Wasiq Faraz Rawasia; Sankar Sridaran; Venkatachalam Udhayakumar; Joseph Abdallah; John W Barnwell; Ananias A Escalante; Najia Karim Ghanchi; Jaymin C Patel; Mohammad Asim Beg
Genetic backgrounds of the Plasmodium falciparum chloroquine resistant transporter (pfcrt) alleles in Pakistan.
Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases 2012;12(2):278-81.
2012: Puspendra P Singh; Venkatachalam Udhayakumar; Anna Blackstock; Naomi W Lucchi; Neeru Singh
Intervillous macrophage migration inhibitory factor is associated with adverse birth outcomes in a study population in Central India.
PloS one 2012;7(12):e51678.
2012: Mohammad Zeeshan; Neeru Singh; Pushpendra Pal Singh; Rupesh Kumar Tyagi; Venkatachalam Udhayakumar; Sumiti Vinayak; Mohd Shoeb Alam; Mohammad Tauqeer Alam; Praveen Kumar Bharti; Hema Bora; Vandana Choudhary; Vidhan Jain; Vanshika Lumb; Pooja Mittra; Yagya D Sharma
Genetic variation in the Plasmodium falciparum circumsporozoite protein in India and its relevance to RTS,S malaria vaccine.
PloS one 2012;7(8):e43430.
2012: Neeru Singh; Venkatachalam Udhayakumar; Blair J Wylie; Meghna Desai; Mobassir Hussain; Yeboah A Kojo; Lora L Sabin; Chander Shekhar; Mrigendra P Singh; Davidson H Hamer
Malaria prevalence among pregnant women in two districts with differing endemicity in Chhattisgarh, India.
Malaria journal 2012;11():274.
2012: Gustavo A Fontecha; Naomi W Lucchi; Tamara Mancero; Engels Banegas; Alexandre M De Oliveira; Meisy Mendoza; Mitra Poorak; Venkatachalam Udhayakumar; Rosa E Mejia
Comparison of molecular tests for the diagnosis of malaria in Honduras.
Malaria journal 2012;11():119.
2012: Andrea M McCollum; Kristan A Schneider; Ya Ping Shi; Laurence Slutsker; Feiko Ter-Kuile; Venkatachalam Udhayakumar; Zhiyong Zhou; Sean M Griffing; Simon Kariuki; Altaf A Lal; Ananias A Escalante
Differences in selective pressure on dhps and dhfr drug resistant mutations in western Kenya.
Malaria journal 2012;11():77.
2012: Naomi W Lucchi; Jenna Oberstaller; David S Peterson; Mitra Poorak; Ganesh Srinivasamoorthy; John W Barnwell; Alexandre J da Silva; Jeremy DeBarry; Ira Goldman; Jessica Kissinger; Maniphet Xayavong; Venkatachalam Udhayakumar
A new single-step PCR assay for the detection of the zoonotic malaria parasite Plasmodium knowlesi.
PloS one 2012;7(2):e31848.
2011: Allison Demas; Ananias A Escalante; Abdunoor M Kabanywanyi; S Patrick Kachur; Naomi W Lucchi; Jenna Oberstaller; David S Peterson; Ganesh Srinivasamoorthy; Deborah Sumari; Venkatachalam Udhayakumar; Leopoldo Villegas; John W Barnwell; Jeremy DeBarry; Jessica Kissinger
Applied genomics: data mining reveals species-specific malaria diagnostic targets more sensitive than 18S rRNA.
Journal of clinical microbiology 2011;49(7):2411-8.
2011: Md Tauqeer Alam; Dziedzom Komi de Souza; Sumiti Vinayak; Sean M Griffing; Amanda C Poe; Nancy O Duah; Anita Ghansah; Kwame Asamoa; Laurence Slutsker; Michael D Wilson; John W Barnwell; Venkatachalam Udhayakumar; Kwadwo A Koram
Selective sweeps and genetic lineages of Plasmodium falciparum drug -resistant alleles in Ghana.
The Journal of infectious diseases 2011;203(2):220-7.
2011: Vidhan Jain; Pradeep K Joel; Naomi W Lucchi; Avinash C Nagpal; Mrigendra P Singh; Jonathan Stiles; Venkatachalam Udhayakumar; Nana Wilson; Anna J Blackstock; Neeru Singh
Plasma levels of angiopoietin-1 and -2 predict cerebral malaria outcome in Central India.
Malaria journal 2011;10():383.
2011: Sean M Griffing; Carmen Lucas; Wilmer Marquiño Quezada; Andrea M McCollum; Tonya Mixson-Hayden; Sankar Sridaran; Md Tauqeer Alam; Nancy Arróspide Velasco; David J Bacon; John W Barnwell; César Cabezas; Ananias A Escalante; Alexandre Macedo de Oliveira; Venkatachalam Udhayakumar
South American Plasmodium falciparum after the malaria eradication era: clonal population expansion and survival of the fittest hybrids.
PloS one 2011;6(9):e23486.
2011: Nana Wilson; Vidhan Jain; Christina E Roberts; Naomi Lucchi; Pradeep K Joel; Mrigendra P Singh; Avinash C Nagpal; Aditya P Dash; Venkatachalam Udhayakumar; Neeru Singh; Jonathan Stiles
CXCL4 and CXCL10 predict risk of fatal cerebral malaria.
Disease markers 2011;30(1):39-49.
2011: Md Tauqeer Alam; Sumiti Vinayak; Kanungnit Congpuong; Chansuda Wongsrichanalai; Wichai Satimai; Laurence Slutsker; Ananias A Escalante; John W Barnwell; Venkatachalam Udhayakumar
Tracking origins and spread of sulfadoxine-resistant Plasmodium falciparum dhps alleles in Thailand.
Antimicrobial agents and chemotherapy 2011;55(1):155-64.
2010: M Andreína Pacheco; Elizabeth M Ryan; Amanda C Poe; Leonardo Basco; Venkatachalam Udhayakumar; Williams E Collins; Ananias A Escalante
Evidence for negative selection on the gene encoding rhoptry-associated protein 1 (RAP-1) in Plasmodium spp.
Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases 2010;10(5):655-61.
2010: Sumiti Vinayak; Md Tauqeer Alam; Rithy Sem; naman shah; Augustina I Susanti; Pharath Lim; Sinuon Muth; Jason D Maguire; William O Rogers; Thierry Fandeur; John W Barnwell; Ananias A Escalante; Chansuda Wongsrichanalai; Frederick Ariey; Steven R Meshnick; Venkatachalam Udhayakumar
Multiple genetic backgrounds of the amplified Plasmodium falciparum multidrug resistance (pfmdr1) gene and selective sweep of 184F mutation in Cambodia.
The Journal of infectious diseases 2010;201(10):1551-60.
2010: Sean Griffing; Luke Syphard; Sankar Sridaran; Andrea M McCollum; Tonya Mixson-Hayden; Sumiti Vinayak; Leopoldo Villegas; John W Barnwell; Ananias A Escalante; Venkatachalam Udhayakumar
pfmdr1 amplification and fixation of pfcrt chloroquine resistance alleles in Plasmodium falciparum in Venezuela.
Antimicrobial agents and chemotherapy 2010;54(4):1572-9.
2010: Sumiti Vinayak; Md Tauqeer Alam; Tonya Mixson-Hayden; Andrea M McCollum; Rithy Sem; naman shah; Pharath Lim; Sinuon Muth; William O Rogers; Thierry Fandeur; John W Barnwell; Ananias A Escalante; Chansuda Wongsrichanalai; Frederick Ariey; Steven R Meshnick; Venkatachalam Udhayakumar
Origin and evolution of sulfadoxine resistant Plasmodium falciparum.
PLoS pathogens 2010;6(3):e1000830.
2010: Tonya Mixson-Hayden; Vidhan Jain; Andrea M McCollum; Amanda Poe; Avinash C Nagpal; Aditya P Dash; Jonathan Stiles; Venkatachalam Udhayakumar; Neeru Singh
Evidence of selective sweeps in genes conferring resistance to chloroquine and pyrimethamine in Plasmodium falciparum isolates in India.
Antimicrobial agents and chemotherapy 2010;54(3):997-1006.
2010: Naomi W Lucchi; Allison Demas; Jothikumar Narayanan; Deborah Sumari; Abdunoor Kabanywanyi; S Patrick Kachur; John W Barnwell; Venkatachalam Udhayakumar
Real-time fluorescence loop mediated isothermal amplification for the diagnosis of malaria.
PloS one 2010;5(10):e13733.
2010: Blair J Wylie; Ahmar H Hashmi; Neeru Singh; Mrigendra P Singh; Jordan Tuchman; Mobassir Hussain; Lora L Sabin; Kojo Yeboah-Antwi; Camellia Banerjee; Mohamad I Brooks; Meghna Desai; Venkatachalam Udhayakumar; William B MacLeod; Aditya P Dash; Davidson H Hamer
Availability and utilization of malaria prevention strategies in pregnancy in eastern India.
BMC public health 2010;10():557.
2010: Sankar Sridaran; Shannon K McClintock; Luke M Syphard; Karen M Herman; John W Barnwell; Venkatachalam Udhayakumar
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.
Malaria journal 2010;9():247.
2010: Tonya Mixson-Hayden; Naomi W Lucchi; Venkatachalam Udhayakumar
Evaluation of three PCR-based diagnostic assays for detecting mixed Plasmodium infection.
BMC research notes 2010;3():88.
2009: David J Bacon; Andrea M McCollum; Sean M Griffing; Carola Salas; Valeria Soberon; Meddly Santolalla; Ryan Haley; Pablo Tsukayama; Carmen Lucas; Ananias A Escalante; Venkatachalam Udhayakumar
Dynamics of malaria drug resistance patterns in the Amazon basin region following changes in Peruvian national treatment policy for uncomplicated malaria.
Antimicrobial agents and chemotherapy 2009;53(5):2042-51.
2009: Sumiti Vinayak; Dharmendar Rathore; Simon Kariuki; Laurence Slutsker; Ya Ping Shi; Leopoldo Villegas; Ananias A Escalante; Venkatachalam Udhayakumar
Limited genetic variation in the Plasmodium falciparum heme detoxification protein (HDP).
Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases 2009;9(2):286-9.
2009: Davidson H Hamer; Mrigendra P Singh; Blair J Wylie; Kojo Yeboah-Antwi; Jordan Tuchman; Meghna Desai; Venkatachalam Udhayakumar; Priti Gupta; Mohamad I Brooks; Manmohan M Shukla; Kiran Awasthy; Lora L Sabin; William B MacLeod; Aditya P Dash; Neeru Singh
Burden of malaria in pregnancy in Jharkhand State, India.
Malaria journal 2009;8():210.
2009: Vidhan Jain; Shannon McClintock; Avinash C Nagpal; Aditya P Dash; Jonathan Stiles; Venkatachalam Udhayakumar; Neeru Singh; Naomi W Lucchi
Macrophage migration inhibitory factor is associated with mortality in cerebral malaria patients in India.
BMC research notes 2009;2():36.
2008: Renée M Ned; April E Price; Sara B Crawford; John G Ayisi; Anna M van Eijk; Juliana A Otieno; Bernard L Nahlen; Richard W Steketee; Laurence Slutsker; Ya Ping Shi; David Lanar; Venkatachalam Udhayakumar
Effect of placental malaria and HIV infection on the antibody responses to Plasmodium falciparum in infants.
The Journal of infectious diseases 2008;198(11):1609-19.
2008: S A Kaba; A Price; Zhiyong Zhou; V Sundaram; P Schnake; Ira F Goldman; Altaf A Lal; Venkatachalam Udhayakumar; C W Todd
Immune responses of mice with different genetic backgrounds to improved multiepitope, multitarget malaria vaccine candidate antigen FALVAC-1A.
Clinical and vaccine immunology : CVI 2008;15(11):1674-83.
2008: Andrea M McCollum; Leonardo K Basco; Rachida Tahar; Venkatachalam Udhayakumar; Ananias A Escalante
Hitchhiking and selective sweeps of Plasmodium falciparum sulfadoxine and pyrimethamine resistance alleles in a population from central Africa.
Antimicrobial agents and chemotherapy 2008;52(11):4089-97.
2008: Vidhan Jain; Avinash C Nagpal; Pradeep K Joel; Manmohan Shukla; Mrigendra P Singh; Rasik B Gupta; Aditya P Dash; Saroj K Mishra; Venkatachalam Udhayakumar; Jonathan Stiles; Neeru Singh
Burden of cerebral malaria in central India (2004-2007).
The American journal of tropical medicine and hygiene 2008;79(4):636-42.
2008: Mary J Hamel; Amanda Poe; Peter B Bloland; Andrea M McCollum; Zhiyong Zhou; Ya Ping Shi; Peter Ouma; Kephas Otieno; John M Vulule; Ananias A Escalante; Venkatachalam Udhayakumar; Laurence Slutsker
Dihydrofolate reductase I164L mutations in Plasmodium falciparum isolates: clinical outcome of 14 Kenyan adults infected with parasites harbouring the I164L mutation.
Transactions of the Royal Society of Tropical Medicine and Hygiene 2008;102(4):338-45.
2008: Zhiyong Zhou; Sean M Griffing; Alexandre Macedo de Oliveira; Andrea M McCollum; Wilmer Marquino Quezada; Nancy Arróspide Velasco; Ananias A Escalante; Venkatachalam Udhayakumar
Decline in sulfadoxine-pyrimethamine-resistant alleles after change in drug policy in the Amazon region of Peru.
Antimicrobial agents and chemotherapy 2008;52(2):739-41.
2008: Naomi W Lucchi; Jon Eric Tongren; Vidhan Jain; Avinash C Nagpal; Christian W Kauth; Ute Woehlbier; Hermann Bujard; Aditya P Dash; Neeru Singh; Jonathan Stiles; Venkatachalam Udhayakumar
Antibody responses to the merozoite surface protein-1 complex in cerebral malaria patients in India.
Malaria journal 2008;7():121.
2008: Vidhan Jain; Henry Armah; Jon Eric Tongren; Renée M Ned; Nana Wilson; Sara Crawford; Pradeep K Joel; Mrigendra P Singh; Avinash C Nagpal; Aditya P Dash; Venkatachalam Udhayakumar; Neeru Singh; Jonathan Stiles
Plasma IP-10, apoptotic and angiogenic factors associated with fatal cerebral malaria in India.
Malaria journal 2008;7():83.
2007: Anna M van Eijk; John G Ayisi; Feiko O ter Kuile; Laurence Slutsker; Ya Ping Shi; Venkatachalam Udhayakumar; Juliana A Otieno; Piet A Kager; Renu B Lal; Richard W Steketee; Bernard L Nahlen
HIV, malaria, and infant anemia as risk factors for postneonatal infant mortality among HIV-seropositive women in Kisumu, Kenya.
The Journal of infectious diseases 2007;196(1):30-7.
2007: Andrea M McCollum; Kristen Mueller; Leopoldo Villegas; Venkatachalam Udhayakumar; Ananias A Escalante
Common origin and fixation of Plasmodium falciparum dhfr and dhps mutations associated with sulfadoxine-pyrimethamine resistance in a low-transmission area in South America.
Antimicrobial agents and chemotherapy 2007;51(6):2085-91.
2007: Jessica Keen; Lena Serghides; Kodjo Ayi; Samir N Patel; John G Ayisi; Anna M van Eijk; Richard W Steketee; Venkatachalam Udhayakumar; Kevin Kain
HIV impairs opsonic phagocytic clearance of pregnancy-associated malaria parasites.
PLoS medicine 2007;4(5):e181.
2007: M Andreina Pacheco; Amanda C Poe; William E Collins; Altaf A Lal; Kazuyuki Tanabe; Simon K Kariuki; Venkatachalam Udhayakumar; Ananias A Escalante
A comparative study of the genetic diversity of the 42kDa fragment of the merozoite surface protein 1 in Plasmodium falciparum and P. vivax.
Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases 2007;7(2):180-7.
2007: Henry Armah; Nana Wilson; Bismark Y Sarfo; Michael D Powell; Vincent Craig Bond; Winston Anderson; Andrew Anthony Adjei; Rk Gyasi; Yao Tettey; Edwin K Wiredu; Jon Eric Tongren; Venkatachalam Udhayakumar; Jonathan Stiles
Cerebrospinal fluid and serum biomarkers of cerebral malaria mortality in Ghanaian children.
Malaria journal 2007;6():147.
2006: Zhiyong Zhou; Amanda C Poe; Josef Limor; Katharine K Grady; Ira Goldman; Andrea M McCollum; Ananias A Escalante; John W Barnwell; Venkatachalam Udhayakumar
Pyrosequencing, a high-throughput method for detecting single nucleotide polymorphisms in the dihydrofolate reductase and dihydropteroate synthetase genes of Plasmodium falciparum.
Journal of clinical microbiology 2006;44(11):3900-10.
2006: Andrea M McCollum; Amanda C Poe; Mary Hamel; Curtis Huber; Zhiyong Zhou; Ya Ping Shi; Peter Ouma; John M Vulule; Peter B Bloland; Laurence Slutsker; John W Barnwell; Venkatachalam Udhayakumar; Ananias A Escalante
Antifolate resistance in Plasmodium falciparum: multiple origins and identification of novel dhfr alleles.
The Journal of infectious diseases 2006;194(2):189-97.
2006: Zhiyong Zhou; Charles W Todd; Robert M Wohlhueter; April Price; Lihua Xiao; Paul Schnake; Phillip Cullison Bonner; Amy M Martin; Ira F Goldman; Patricia De La Vega; Venkatachalam Udhayakumar; Altaf A Lal
Development, characterization and immunogenicity of a multi-stage, multi-valent Plasmodium falciparum vaccine antigen (FALVAC-1A) expressed in Escherichia coli.
Human vaccines 2006;2(1):14-23.
2005: William E Collins; G Gale Galland; John W Barnwell; Venkatachalam Udhayakumar; JoAnn S Sullivan; Douglas Nace; Jon Eric Tongren; Tyrone Williams; Jacquelin Roberts; Ya Ping Shi; Altaf A Lal
Preliminary observations on the efficacy of a recombinant multistage Plasmodium falciparum vaccine in Aotus nancymai monkeys.
The American journal of tropical medicine and hygiene 2005;73(4):686-93.
2005: Renée M Ned; Julie M Moore; Sujittra Chaisavaneeyakorn; Venkatachalam Udhayakumar
Modulation of immune responses during HIV-malaria co-infection in pregnancy.
Trends in parasitology 2005;21(6):284-91.
2005: Sujittra Chaisavaneeyakorn; Naomi W Lucchi; Carlos Abramowsky; Caroline Othoro; Sansanee C Chaiyaroj; Ya Ping Shi; Bernard L Nahlen; David S Peterson; Julie M Moore; Venkatachalam Udhayakumar
Immunohistological characterization of macrophage migration inhibitory factor expression in Plasmodium falciparum-infected placentas.
Infection and immunity 2005;73(6):3287-93.
2005: Phillip Cullison Bonner; Zhiyong Zhou; Lisa B Mirel; John G Ayisi; Ya Ping Shi; Anna M van Eijk; Juliana A Otieno; Bernard L Nahlen; Richard W Steketee; Venkatachalam Udhayakumar
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.
Clinical and diagnostic laboratory immunology 2005;12(3):375-9.
2004: Julie M Moore; Sujittra Chaisavaneeyakorn; Douglas J Perkins; Caroline Othoro; Juliana A Otieno; Bernard L Nahlen; Ya Ping Shi; Venkatachalam Udhayakumar
Hemozoin differentially regulates proinflammatory cytokine production in human immunodeficiency virus-seropositive and -seronegative women with placental malaria.
Infection and immunity 2004;72(12):7022-9.
2004: Feiko O ter Kuile; Monica E Parise; Francine H Verhoeff; Venkatachalam Udhayakumar; Robert D Newman; Anna M van Eijk; Stephen J Rogerson; Richard W Steketee
The burden of co-infection with human immunodeficiency virus type 1 and malaria in pregnant women in sub-saharan Africa.
The American journal of tropical medicine and hygiene 2004;71(2 Suppl):41-54.
2004: Ananias A Escalante; Omar E Cornejo; Ascanio Rojas; Venkatachalam Udhayakumar; Altaf A Lal
Assessing the effect of natural selection in malaria parasites.
Trends in parasitology 2004;20(8):388-95.
2003: Douglas J Perkins; Julie M Moore; Juliana A Otieno; Ya Ping Shi; Bernard L Nahlen; Venkatachalam Udhayakumar; Altaf A Lal
In vivo acquisition of hemozoin by placental blood mononuclear cells suppresses PGE2, TNF-alpha, and IL-10.
Biochemical and biophysical research communications 2003;311(4):839-46.
2003: Craig S Boutlis; Moses Lagog; Sujittra Chaisavaneeyakorn; Mary A Misukonis; Moses J Bockarie; Charles S Mgone; Zhiqiang Wang; Grant Morahan; J Brice Weinberg; Venkatachalam Udhayakumar; Nicholas Anstey
Plasma interleukin-12 in malaria-tolerant papua new guineans: inverse correlation with Plasmodium falciparum parasitemia and peripheral blood mononuclear cell nitric oxide synthase activity.
Infection and immunity 2003;71(11):6354-7.
2003: Julie M Moore; Ya Ping Shi; Caroline Othoro; Bernard L Nahlen; Altaf A Lal; Venkatachalam Udhayakumar
Comparative flow cytometric analysis of term placental intervillous and peripheral blood from immediate postpartum women in Western kenya.
Placenta 2003;24(7):779-85.
2003: Sujittra Chaisavaneeyakorn; Julie M Moore; Lisa B Mirel; Caroline Othoro; Juliana A Otieno; Sansanee C Chaiyaroj; Ya Ping Shi; Bernard L Nahlen; Altaf A Lal; Venkatachalam Udhayakumar
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.
Clinical and diagnostic laboratory immunology 2003;10(4):631-6.
2003: Vishwa Deep Dixit; Hyunwon Yang; Venkatachalam Udhayakumar; Rajagopala Sridaran
Gonadotropin-releasing hormone alters the T helper cytokine balance in the pregnant rat.
Biology of reproduction 2003;68(6):2215-21.
2003: John M Ong'echa; Altaf A Lal; Dianne J Terlouw; Feiko O ter Kuile; Simon K Kariuki; Venkatachalam Udhayakumar; Alloys S S Orago; Allen W Hightower; Bernard L Nahlen; Ya Ping Shi
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.
The American journal of tropical medicine and hygiene 2003;68(5):590-7.
2003: Sujittra Chaisavaneeyakorn; Caroline Othoro; Ya Ping Shi; Juliana A Otieno; Sansanee C Chaiyaroj; Altaf A Lal; Venkatachalam Udhayakumar
Relationship between plasma Interleukin-12 (IL-12) and IL-18 levels and severe malarial anemia in an area of holoendemicity in western Kenya.
Clinical and diagnostic laboratory immunology 2003;10(3):362-6.
2002: Dianne J Terlouw; Michael Aidoo; Venkatachalam Udhayakumar; Margarette S Kolczak; James OLOO; Piet A Kager; Altaf A Lal; Bernard L Nahlen; Feiko O ter Kuile
Increased efficacy of sulfadoxine-pyrimethamine in the treatment of uncomplicated falciparum malaria among children with sickle cell trait in Western Kenya.
The Journal of infectious diseases 2002;186(11):1661-8.
2002: Maurine R Hobbs; Venkatachalam Udhayakumar; Marc C Levesque; Jennifer Booth; Jacquelin M Roberts; Ariana N Tkachuk; Ann Pole; Hilary Coon; Simon K Kariuki; Bernard L Nahlen; Esther D Mwaikambo; Altaf L Lal; Donald L Granger; Nicholas Anstey; J Brice Weinberg
A new NOS2 promoter polymorphism associated with increased nitric oxide production and protection from severe malaria in Tanzanian and Kenyan children.
Lancet 2002;360(9344):1468-75.
2002: Sujittra Chaisavaneeyakorn; Julie M Moore; Caroline Othoro; Juliana A Otieno; Sansanee C Chaiyaroj; Ya Ping Shi; Bernard L Nahlen; Altaf A Lal; Venkatachalam Udhayakumar
Immunity to placental malaria. IV. Placental malaria is associated with up-regulation of macrophage migration inhibitory factor in intervillous blood.
The Journal of infectious diseases 2002;186(9):1371-5.
2002: Asimah Rafi-Janajreh; Jon Eric Tongren; Charlotte Kensil; Craig Hackett; Francisco Candal; Altaf Lal; Venkatachalam Udhayakumar
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.
Experimental parasitology 2002;101(1):3-12.
2002: Michael Aidoo; Dianne J Terlouw; Margarette S Kolczak; Peter D McElroy; Feiko O ter Kuile; Simon K Kariuki; Bernard L Nahlen; Altaf A Lal; Venkatachalam Udhayakumar
Protective effects of the sickle cell gene against malaria morbidity and mortality.
Lancet 2002;359(9314):1311-2.
2002: Sujittra Chaisavaneeyakorn; Julie M Moore; Juliana A Otieno; Sansanee C Chaiyaroj; Douglas J Perkins; Ya Ping Shi; Bernard L Nahlen; Altaf A Lal; Venkatachalam Udhayakumar
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.
The Journal of infectious diseases 2002;185(1):127-31.
2001: Michael Aidoo; Peter D McElroy; Margarette S Kolczak; Dianne J Terlouw; Feiko O ter Kuile; Bernard L Nahlen; Altaf A Lal; Venkatachalam Udhayakumar
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.
Genetic epidemiology 2001;21(3):201-11.
2001: Venkatachalam Udhayakumar; Simon K Kariuki; M Kolczack; M Girma; Jacquelin M Roberts; James OLOO; Bernard L Nahlen; Altaf A Lal
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.
The American journal of tropical medicine and hygiene 2001;65(2):100-7.
2000: Julie M Moore; John G Ayisi; Bernard L Nahlen; Ambrose O Misore; Altaf A Lal; Venkatachalam Udhayakumar
Immunity to placental malaria. II. Placental antigen-specific cytokine responses are impaired in human immunodeficiency virus-infected women.
The Journal of infectious diseases 2000;182(3):960-4.
2000: Ya Ping Shi; P Das; Brian P Holloway; Venkatachalam Udhayakumar; Jon Eric Tongren; Francisco Candal; S Biswas; R Ahmad; S E Hasnain; Altaf A Lal
Development, expression, and murine testing of a multistage Plasmodium falciparum malaria vaccine candidate.
Vaccine 2000;18(25):2902-14.
2000: Julie M Moore; Bernard L Nahlen; Altaf A Lal; Venkatachalam Udhayakumar
Immunologic memory in the placenta: a lymphocyte recirculation hypothesis.
Medical hypotheses 2000;54(3):505-10.
2000: Michael Aidoo; Venkatachalam Udhayakumar
Field studies of cytotoxic T lymphocytes in malaria infections: implications for malaria vaccine development.
Parasitology today (Personal ed.) 2000;16(2):50-6.
2000: Janet M McNicholl; M V Downer; Venkatachalam Udhayakumar; C A Alper; David L Swerdlow
Host-pathogen interactions in emerging and re-emerging infectious diseases: a genomic perspective of tuberculosis, malaria, human immunodeficiency virus infection, hepatitis B, and cholera.
Annual review of public health 2000;21():15-46.
1999: Julie M Moore; Bernard L Nahlen; Ambrose O Misore; Altaf A Lal; Venkatachalam Udhayakumar
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.
The Journal of infectious diseases 1999;179(5):1218-25.
1999: Peter B Bloland; Trenton K Ruebush; Joseph B McCormick; John G Ayisi; D A Boriga; James OLOO; R Beach; William A Hawley; A Lal; Bernard L Nahlen; Venkatachalam Udhayakumar; Carlos C Campbell
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.
The American journal of tropical medicine and hygiene 1999;60(4):635-40.
1999: Ya Ping Shi; Venkatachalam Udhayakumar; James OLOO; Bernard L Nahlen; Altaf A Lal
Differential effect and interaction of monocytes, hyperimmune sera, and immunoglobulin G on the growth of asexual stage Plasmodium falciparum parasites.
The American journal of tropical medicine and hygiene 1999;60(1):135-41.
1999: Caroline Othoro; Altaf A Lal; Bernard L Nahlen; Davy K Koech; Alloys S S Orago; Venkatachalam Udhayakumar
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.
The Journal of infectious diseases 1999;179(1):279-82.
1998: Julie M Moore; Bernard L Nahlen; Altaf A Lal; Venkatachalam Udhayakumar
Postpartum coma.
Lancet 1998;352(9128):658.
1998: Venkatachalam Udhayakumar; Ae Youngpairoj; S Fang; Danny L Jue; Robert M Wohlhueter; Altaf A Lal
Immunogenicity of Plasmodium falciparum and Plasmodium vivax circumsporozoite protein repeat multiple antigen constructs (MAC).
Vaccine 1998;16(9-10):982-8.
1998: OraLee Branch; Venkatachalam Udhayakumar; Allen W Hightower; James OLOO; William A Hawley; Bernard L Nahlen; Peter B Bloland; David C Kaslow; Altaf A Lal
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.
The American journal of tropical medicine and hygiene 1998;58(2):211-9.
1997: Julie M Moore; Bernard L Nahlen; A V Ofulla; Joseph Caba; John G Ayisi; James OLOO; Ambrose O Misore; Andre J Nahmias; Altaf A Lal; Venkatachalam Udhayakumar
A simple perfusion technique for isolation of maternal intervillous blood mononuclear cells from human placentae.
Journal of immunological methods 1997;209(1):93-104.
1997: Venkatachalam Udhayakumar; J M Ongecha; Ya Ping Shi; Michael Aidoo; Alloys S S Orago; James OLOO; William A Hawley; Bernard L Nahlen; S L Hoffman; W R Weiss; Altaf A Lal
Cytotoxic T cell reactivity and HLA-B35 binding of the variant Plasmodium falciparum circumsporozoite protein CD8+ CTL epitope in naturally exposed Kenyan adults.
European journal of immunology 1997;27(8):1952-7.
1997: Chunfu Yang; William E Collins; Lihua Xiao; Ae Youngpairoj; RC Reed; C O Nelson; Robert L Hunter; Danny L Jue; S Fang; Robert M Wohlhueter; Venkatachalam Udhayakumar; Altaf A Lal
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;15(4):377-86.
1997: RC Reed; A F Verhuel; Robert L Hunter; Venkatachalam Udhayakumar; V Louis-Wileman; V J Jennings; Danny L Jue; Robert M Wohlhueter; Altaf A Lal
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;15(1):65-70.
1996: Lihua Xiao; C Yang; C O Nelson; Brian P Holloway; Venkatachalam Udhayakumar; Altaf A Lal
Quantitation of RT-PCR amplified cytokine mRNA by aequorin-based bioluminescence immunoassay.
Journal of immunological methods 1996;199(2):139-47.
1996: Lihua Xiao; C Yang; K Dorovini-Zis; Narendra Tandon; E W Ades; Altaf A Lal; Venkatachalam Udhayakumar
Plasmodium falciparum: involvement of additional receptors in the cytoadherence of infected erythrocytes to microvascular endothelial cells.
Experimental parasitology 1996;84(1):42-55.
1996: Ya Ping Shi; U Sayed; Shoukat H Qari; Jacquelin M Roberts; Venkatachalam Udhayakumar; James OLOO; William A Hawley; David C Kaslow; Bernard L Nahlen; Altaf A Lal
Natural immune response to the C-terminal 19-kilodalton domain of Plasmodium falciparum merozoite surface protein 1.
Infection and immunity 1996;64(7):2716-23.
1996: Lihua Xiao; Chunfu Yang; P S Patterson; Venkatachalam Udhayakumar; Altaf A Lal
Sulfated polyanions inhibit invasion of erythrocytes by plasmodial merozoites and cytoadherence of endothelial cells to parasitized erythrocytes.
Infection and immunity 1996;64(4):1373-8.
1996: Altaf A Lal; M A Hughes; D A Oliveira; C Nelson; Peter B Bloland; James OLOO; W E Hawley; Allen W Hightower; Bernard L Nahlen; Venkatachalam Udhayakumar
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.
Infection and immunity 1996;64(3):1054-9.
1996: D A Oliveira; Venkatachalam Udhayakumar; Peter B Bloland; Ya Ping Shi; Bernard L Nahlen; James OLOO; W E Hawley; Altaf A Lal
Genetic conservation of the Plasmodium falciparum apical membrane antigen-1 (AMA-1).
Molecular and biochemical parasitology 1996;76(1-2):333-6.
1995: AF Verheul; Venkatachalam Udhayakumar; Danny L Jue; Robert M Wohlhueter; Altaf A Lal
Monopalmitic acid-peptide conjugates induce cytotoxic T cell responses against malarial epitopes: importance of spacer amino acids.
Journal of immunological methods 1995;182(2):219-26.
1995: Venkatachalam Udhayakumar; D Anyona; S Kariuki; Ya Ping Shi; Peter B Bloland; O H Branch; W Weiss; Bernard L Nahlen; David C Kaslow; Altaf A Lal
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.
Journal of immunology (Baltimore, Md. : 1950) 1995;154(11):6022-30.
1995: C Yang; Ya Ping Shi; Venkatachalam Udhayakumar; M P Alpers; M M Povoa; William A Hawley; William E Collins; Altaf A Lal
Sequence variations in the non-repetitive regions of the liver stage-specific antigen-1 (LSA-1) of Plasmodium falciparum from field isolates.
Molecular and biochemical parasitology 1995;71(2):291-4.
1994: Robert M Wohlhueter; K Parekh; Venkatachalam Udhayakumar; S Fang; Altaf A Lal
Analysis of binding of monoclonal antibody to a malarial peptide by surface plasmon resonance biosensor and integrated rate equations.
Journal of immunology (Baltimore, Md. : 1950) 1994;153(1):181-9.
1994: Venkatachalam Udhayakumar; Shoukat H Qari; P Patterson; William E Collins; Altaf A Lal
Monoclonal antibodies to the circumsporozoite protein repeats of a Plasmodium vivax-like human malaria parasite and Plasmodium simiovale.
Infection and immunity 1994;62(5):2098-100.
1994: Venkatachalam Udhayakumar; Ya Ping Shi; S Kumar; Danny L Jue; Robert M Wohlhueter; Altaf A Lal
Antigenic diversity in the circumsporozoite protein of Plasmodium falciparum abrogates cytotoxic-T-cell recognition.
Infection and immunity 1994;62(4):1410-3.
1993: Ya Ping Shi; Venkatachalam Udhayakumar; M P Alpers; M M Povoa; James OLOO; T K Ruebush; Altaf A Lal
Natural antibody responses against the non-repeat-sequence-based B-cell epitopes of the Plasmodium falciparum circumsporozoite protein.
Infection and immunity 1993;61(6):2425-33.
1993: Shoukat H Qari; Ya Ping Shi; I F Goldman; Venkatachalam Udhayakumar; M P Alpers; William E Collins; Altaf A Lal
Identification of Plasmodium vivax-like human malaria parasite.
Lancet 1993;341(8848):780-3.