For up-to-date list of publications through PubMed click here
Devi SM, Ahmed I, Francalacci P, Hussain MA, Alvi A, Sechi LA, Megraud F and Ahmed N (2007). Ancestral European Origins of Helicobacter pylori in India. BMC Genomics 8:184
Akhtar Y, Ahmed I, Devi SM and Ahmed N (2007). The coevolved Helicobacter pylori and gastric cancer: Trinity of bacterial virulence, host susceptibility and lifestyle. Infectious Agents and Cancer 2:2.
Banerjee S, Nandyala AK, Raviprasad P, Ahmed N and Hasnain SE (2007). Iron dependent Iron binding activity of M. tuberculosis aconotase. J Bacteriol. 189:4046-4052.
Sechi LA, Felis G, Ahmed N, Paccagnini D, Usai D, Ortu S, Molicotti P, Zanetti S (2007). Genome and transcriptome scale portrait of sigma factors in M. avium subsp. paratuberculosis. Infection Genet Evol. 7:424-432.
Ahmed N, Majeed AA, Ahmed I, Hussain MA, Alvi A, Devi SM, Rizwan M, Ranjan A, Sechi LA, and Megraud F (2007). genoBASE pylori: A genotype search tool and database of human gastric pathogen Helicobacter pylori. Infection Genet Evol. 7:463-468.
Salih B, Abasiyanik F, Ahmed N (2007). A preliminary study on the genetic profile of cag pathogenicity island and other virulent gene loci of Helicobacter pylori strains from Turkey. Infection Genet Evol. 7:509-512.
Sechi LA, Ruhel A, Ahmed N, Usai D, Paccagnini D, Felis G and Zannetti S (2007). Mycobacterium avium subspecies paratuberculosis is able to infect and persist in enteric glial cells. World J Gastroenterol. (In press).
Duggirala A, Kenchappa P, Sharma S, Peeters JK, Ahmed N et al. (2007). High-Resolution Genome Profiling Differentiated Staphylococcus epidermidis Isolated from Patients with Ocular Infections and Normal Individuals. Invest Ophthalmol Vis Sci. 48:3239-3245.
Ahmed N and Leblebicioglu H (2006). India's goldmine of ancestral bacilli and the looming TB-HIV pandemic. Ann Clin Microbiol Antimicrobials 5:31.
Devi SM, Ahmed I, Khan AA, Rahman SA, Alvi A, Sechi LA and Ahmed N (2006). Genomes of Helicobacter pylori from native Peruvians suggest admixture of ancestral and modern lineages and reveal a western type cag-pathogenicity island. BMC Genomics 7:191.
Gutierrez MC, Ahmed N (joint first authors), Willery E, Narayanan S, Hasnain SE, Chauhan DS, Katoch VM, Vincent V, Locht C and Supply P (2006) Predominance of ancestral lineages of Mycobacterium tuberculosis in India suggests an ancient focus of tuberculosis in South Asia. Emerging Infectious Dis 12: 367-374.
Sechi LA, Gazouli M, Sieswerda L, Molicotti P, Ahmed N, Ikonomopoulos J, Scanu AM, Paccagnini D and Zanetti S. (2006). Relationship between Crohn's disease, infection with Mycobacterium avium subspecies paratuberculosis and Slc11a1 gene polymorphisms in Sardinian patients. World J Gastroenterol. 12(44): 7161-7164.
Ahmed N, Devi SM, Valverde M de LA, Vijayachari P, Machangu RS, Ellis WA and Hartskeerl RA (2006). Multilocus sequence typing method for identification and genotypic classification of pathogenic leptospira species. Annals Clinical Microbiol Antimicrobials 5:28.
Zanetti S, Molicotti P, Cannas S, Ortu S, Ahmed N and Sechi LA (2006). In vitro activities of antimycobacterial agents against Mycobacterium avium subsp. paratuberculosis linked to Crohn's Disease and Paratuberculosis. Annals Clinical Microbiol Antimicrobials 5:26.
Rao KR, Ahmed N, Sriramula S, Sechi LA and Hasnain SE (2006) Rapid identification of M. tuberculosis Beijing genotypes on the basis of the Mycobacterial Interspersed Repeat Unit locus 26 signature. J Clin Microbiol 44(1): 274-277.
Sechi LA, Ahmed N, Felis GE, Dupre I, Cannas S, Fadda G, Bua A, Zanetti S. (2006) Immunogenicity and cytoadherence of recombinant heparin binding haemagglutinin (HBHA) of Mycobacterium avium subsp. paratuberculosis: Functional promiscuity or a role in virulence? Vaccine 24:236-243.
Sechi LA, Mara L, Cappai P, Frothingam R, Ortu S, Leoni A, Ahmed N and Zanetti S (2006). Immunization with DNA vaccines encoding different mycobacterial antigens elicits a Th1 type immune response in lambs and protects against Mycobacterium avium subspecies paratuberculosis infection. Vaccine 24:229-235.
Kenchappa P, Rao KR, Ahmed N, Joshi S, Ghousunnissa S, Vijayalakshmi V, and Murthy K. J. R. (2006). Fluorescent Amplified Fragment Length Polymorphism based molecular epidemiology of hospital infections in a tertiary care setting in Hyderabad, India. Infection Genetics Evol. 6:220-227.
Ali SM, Khan AA, Ahmed I, Musaddiq M, Ahmed KS, Polasa H, Rao LV, Habibullah CM, Sechi LA, Ahmed N (2005) Antimicrobial activities of Eugenol and Cinnamaldehyde against the human gastric pathogen Helicobacter pylori. Ann Clin Microbiol Antimicrob 4:20.
Rao KR, Kauser F, Sriramula S, Zanetti S, Sechi LA, Ahmed N and Hasnain SE (2005). Analysis of genomic downsizing based on region of difference (RD) polymorphism profiling of Mycobacterium tuberculosis patient isolates reveals geographic partitioning. J Clin Microbiol 43:5978-5982.
Sechi LA, Gazouli M, Ikonomopoulos J, Lukas JC, Scanu AM, Ahmed N, Fadda G and Zanetti S. (2005) Mycobacterium avium subsp. paratuberculosis, genetic susceptibility to Crohn's disease and the Sardinians: The way ahead. J Clin Microbiol 43:5275-5277.
Ali S M, Khan AA, Tiwari SK, Ahmed N, Rao LV and Habibullah CM. Association between cag-pathogenicity island in Helicobacter pylori isolates from peptic ulcer, gastric carcinoma and non-ulcer dyspepsia subjects with histological changes. World J Gastroenterol. 11:6815-6822.
Prouzet-Mauleon V, Hussain MA, Lamouliatte H, Kauser F, Megraud F and Ahmed N. (2005) Pathogen evolution in vivo: genome dynamics of two isolates obtained nine years apart from a duodenal ulcer patient infected with a single Helicobacter pylori strain. J Clin Microbiol. 43:4237-4241.
Kauser F, Hussain MA, Ahmed I....Sechi LA and Ahmed N. (2005) Comparing genomes of Helicobacter pylori isolates recovered from ulcer disease patients in England. BMC Microbiol. 5:32.
Ahmed N (2005) 23 years of the discovery of Helicobacter pylori: Is the debate over? Annals Clin Microbiol Antimicrobials 4:17.
Kauser F, Hussain M A, Ahmed I, Ahmad N, Habeeb A, Khan A A and Ahmed N (2005) Comparing genomes of Helicobacter pylori strains from the high altitude desert of Ladakh, India J Clin Microbiol 43:1538-1545.
Ahmed N and Sechi LA (2005) Helicobacter pylori and gastroduodenal pathology: New threats of the old friend. Annals Clin Microbiol Antimicrobials 4:1.
Tiwari SK, Khan AA, Khan SA, Ali SM, Habeeb A, Kauser F, Hussain MA, Ahmed N and Habibullah CM. (2005). PCR based analysis of the cag-PAI of Helicobacter pylori from saliva: An approach for rapid molecular genotyping in correlation with disease status. J Gasteroenterol Hepatol 20:1560-1566.
Hasnain SE and Ahmed N (2004). Leptospirosis. LANCET Infectious Dis 4: 543.
Kauser F, Khan AA, Hussain MA, Carroll IM, Ahmad N, Tiwari S, Shouche Y, Das B, Alam M, Ali SM, Habibullah CM, Sierra R, Megraud F, Sechi LA and Ahmed N (2004). The cag pathogenicity island (cag-PAI) of Helicobacter pylori is disrupted in majority of patient isolates from different human populations. J Clin Microbiol 42: 5302-5308.
Abid Hussain M, Kauser F, Khan A A, Tiwari S, Habibullah CM and Ahmed N (2004). Molecular genotyping of Helicobacter pylori isolates from different human populations using genomic fingerprinting of ERIC regions: Implications in strain identification and geographic evolution. J Clin Microbiol. 42: 2372-2378.
Vijayachari P, Ahmed N, Sugunan AP, Ghousunnissa S, Rajender Rao K, Hasnain SE and Sehgal SC (2004). Fluorescent amplified fragment length polymorphism (FAFLP) based molecular epidemiology of Leptospirosis in India. J Clin Microbiol 42: 3575-3580.
Ahmed N, Alam M, Rajender Rao K, Kauser F, Ashok Kumar N, Qazi N N, Sangal V, Sharma VD, Das R, Katoch VM, Murthy KJR, Suneetha S, Sharma S K, Sechi LA, Gilman RH and Hasnain SE (2004). Molecular genotyping of a large, multi-centric collection of tubercle bacilli indicates geographical partitioning of strain variation: Implications in global epidemiology of M. tuberculosis. J Clin Microbiol 42:3240-3247.
Carroll I M, Khan AA and Ahmed N (2004). Revisiting the pestilence of Helicobacter pylori: insights into geographical genomics and pathogen evolution. Infection Genet Evol 4: 81-90.
Carroll I M, Ahmed N, Beesley S M, Khan A A, Ghousunnissa S, O Morain C A, Habibullah CM and Smyth C J (2004) Microevolution between paired antral and paired ant ral and corpus Helicobacter pylori isolates recovered from individual patients. J Med Microbiol 53: 669-677.
Majeed A A, Ahmed N, Rao K R, Ghousunnissa S, Kausar F, Bose B, Nagarajaram H A, Katoch V M, Cousins D V, Sechi L A, Gilman R H and Hasnain S E. (2004) AmpliBASE MT: A Mycobacterium tuberculosis diversity knowledgebase. Bioinformatics 20: 989-992.
Siddiqi N, Das R, Pathak N, Banerjee S, Ahmed N, Katoch V M, and Hasnain SE (2004) Mycobacterium tuberculosis isolate with a distinct genomic identity overexpresses a TAP like efflux pump. Infection 32:109-111.
Ahmed N, Caviedes L, Alam M, Rao K R, Sangal V, Sheen P, Gilaman RH and Hasnain SE (2003). Distinctiveness of Mycobacterium tuberculosis genotypes from Human Immunodeficiency Virus Type 1-Seropositive and -Seronegative patients in Lima, Peru. J Clinical Microbiol 41: 1712-1716.
Ahmed N, Alam M, Majeed A A, Rahman S A, Cataldi A, Cousins D and Hasnain, S. E. (2003). Genome sequence based, comparative analysis of the fluorescent amplified fragment length polymorphisms (FAFLP) of tubercle bacilli from seals provides molecular evidence for a new species within the Mycobacterium tuberculosis complex. Infection Genet Evol 2:193-199.
Carroll I M, Ahmed N, Beesley S M, Khan A A, O'Morain C A and Smyth C J (2003) Fine Structure Molecular Typing of Irish Helicobacter pylori Isolates and their Genetic Relatedness to Strains from Four Different Continents. J Clin Microbiol 41:5755-5759.
Cousins D V, Bernardelli A, Bastida R, Cataldi A, Quse V, Dow S, Redrobe S, Duignan P, Murray A, Dupont C, Ahmed N et al. (2003). Tuberculosis in seals is caused by a novel member of the Mycobcterium tuberculosis complex: Mycobacterium tuberculosis subsp. pinnipedae subsp. nov. Int J Systematic Evolutionary Microbiol 53: 1305-1314.
Ahmed N, Bal A, Khan A A, Alam M, Kagal A, Arjunwadkar V, Rajput A, Majeed A A, Rahman S A, Banerjee S, Joshi S, Bharadwaj R (2002) Whole genome fingerprinting and genotyping of multiple drug resistant (MDR) isolates of Pseudomonas aeruginosa from endophthalmitis patients in India. Infection Genet Evol 1: 237-242.
Siddiqi N, Shamim M, Hussain S, Choudhary R K, Ahmed N, Prachee, Banerjee S, Savithri G R, Alam M, Pathak N, Amin A, Hanief M, Katoch V M, Sharma S K, and Hasnain S E (2002). Molecular Characterization of Multidrug-Resistant Isolates of Mycobacterium tuberculosis from Patients in North India. Antimicrob Agents Chemother. 46: 443-450.
Panicker S G, Reddy ABM, Mandal A K, Ahmed N, Nagarajaram H A, Hasnain SE and Balasubramanian D (2002). Identification of novel mutations causing familial primary congenital glaucoma in Indian pedigrees. Investigative Ophthalmol Visual Sci 43 (5):1358-1366.
Ahmed N, Khan J R and Ganai N A (1999). DNA amplification assay for rapid detection of bovine tubercle bacilli in semen. Animal Reprod Sci 57: 15-21.
Ahmed N. (1999). Evaluation of PCR technique in rapid diagnosis of tuberculosis in dairy cattle. Livestock International. 3: 9-13.
Ahmed N, Mohanty A K, Batish V K, Mukhopadhyay U. and Grover S (1998). PCR-based Rapid detection of Mycobacterium tuberculosis in blood from immunocompetent patients with pulmonary tuberculosis. J Clinical Microbiol 36: 3094-3095.
Dr. Niyaz Ahmed