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Determination of acetylator phenotype based on the ratio of acetylisoniazid to isoniazid in urine following an oral dose of ordinary isoniazid.
Raghupati Sarma G, Kannapirin G, Narayana AS, Radhakrishna S, Tripathy SP. Raghupati Sarma G, et al. Among authors: narayana as. Indian J Med Res. 1976 Jan;64(1):1-8. Indian J Med Res. 1976. PMID: 1270091 No abstract available.
Classification of subjects as slow or rapid inactivators of isoniazid based on the ratio of acetylisoniazid to isoniazid in urine determined by a simple colorimetric method.
Raghupati Sarma G, Kailasam S, Kannapiran M, Krishnaswami KV, Thomas L, Nair NG, Narayana AS. Raghupati Sarma G, et al. Among authors: narayana as. Indian J Med Res. 1976 Oct;64(10):1456-61. Indian J Med Res. 1976. PMID: 1017858 No abstract available.
A qualitative test for the determination of isoniazid acetylator phenotype.
Sarma GR, Kannapiran M, Narayana AS, Radhakrishna S. Sarma GR, et al. Among authors: narayana as. Indian J Med Res. 1978 Aug;68:335-40. Indian J Med Res. 1978. PMID: 721206 No abstract available.
Self-induction of rifampicin metabolism in man.
Immanuel C, Jayasankar K, Narayana AS, Sarma GR. Immanuel C, et al. Among authors: narayana as. Indian J Med Res. 1985 Nov;82:381-7. Indian J Med Res. 1985. PMID: 4093155 No abstract available.
Classification of children as slow or rapid acetylators based on concentrations of isoniazid in saliva following oral administration of body-weight and surface-area-related dosages of the drug.
Sarma GR, Kailasam S, Datta M, Loganathan GK, Rahman F, Narayana AS. Sarma GR, et al. Among authors: narayana as. Indian Pediatr. 1990 Feb;27(2):134-42. Indian Pediatr. 1990. PMID: 2361757
Induction of rifampicin metabolism during treatment of tuberculous patients with daily and fully intermittent regimens containing the drug.
Immanuel C, Jayasankar K, Narayana AS, Santha T, Sundaram V, Sarma GR. Immanuel C, et al. Among authors: narayana as. Indian J Chest Dis Allied Sci. 1989 Oct-Dec;31(4):251-7. Indian J Chest Dis Allied Sci. 1989. PMID: 2576931
A comprehensive study of school children in twin cities of Hyderabad and Secunderabad.
Rao MN, Ahmed M, Reddy H, Narayana AS, Reddi YR. Rao MN, et al. Among authors: narayana as. Indian Pediatr. 1974 Aug;11(8):567-71. Indian Pediatr. 1974. PMID: 4443059 No abstract available.
Effect of prednisolone and rifampin on isoniazid metabolism in slow and rapid inactivators of isoniazid.
Sarma GR, Kailasam S, Nair NG, Narayana AS, Tripathy SP. Sarma GR, et al. Among authors: narayana as. Antimicrob Agents Chemother. 1980 Nov;18(5):661-6. doi: 10.1128/aac.18.5.661. Antimicrob Agents Chemother. 1980. PMID: 7447424 Free PMC article.
Rifampin-induced release of hydrazine from isoniazid. A possible cause of hepatitis during treatment of tuberculosis with regimens containing isoniazid and rifampin.
Sarma GR, Immanuel C, Kailasam S, Narayana AS, Venkatesan P. Sarma GR, et al. Among authors: narayana as. Am Rev Respir Dis. 1986 Jun;133(6):1072-5. doi: 10.1164/arrd.1986.133.6.1072. Am Rev Respir Dis. 1986. PMID: 3717759
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