Isoniazid INH Synthesis Metabolism || Anti TB drugs || Tuberculosis || Medicinal Chemistry ||

[@ghufranabohio6213]

ghufrana bohio roll no 19 1: First line tb drugs: isoniazid, streptomycin, rifampicin, ethambutol, pyranzinamide Second line : amikacin, para amino salicylic acid, ethionamide, viomycin, ciproflocaxin

[@rimshaurooj263]

Q1: Pyrazinamide, ethambutaol, rifampicin, isoniazid and Streptomycin. Q2: Isoniazid is a Prodrug which is activated to isonicotinic acid by katG enzyme present on the surface of M.tuberculosis. Isonicotinic acid inhibits baterial cell wall mycolic acid, that's why making M.tuberulosis susceptible to reactive oxygen radicals. Q3: Isoniazid extensively metabolized to inactive metabolites. The major metabolite is N-Acetyl isoniazid and the enzyme is cytosolic N-acetyl transferase.

[@nimrasamoo1796]

1 .isoniazid, rifampin,streptomycin ,pyrazinamide these are first line agents.Ethanamide, ofloxocin,cephlofloxcacin,ketamicin these are second line agents. 2.due to its ability to inhibit mycolic acid synthesis, which interferes with cell wall synthesis.inhibit bacterial cell wall 3.isoniazid is converd inhydro acetyle isoniazid then it convert in isonicotonic acid conjugate with glycine and acetyl hyrazine converted into dyacetyle hydrazine.

[@safderhussain6516]

Ans3 isoniazid is converd inhydro acetyle isoniazid then it convert in isonicotonic acid conjugate with glycine and acetyl hyrazine converted into dyacetyle hydrazine.

[@jotipirbhat]

Q-1 1st:-Isoniazid,Rifampin,Streptomycin,Pyrazinamide. 2nd:- Ethanamide,Ofloxocin,Cephlofloxacin,Amikacin,Kanamycin. Q-2 Isonicotinic acid activated form of isoniazid inhibit the bacterial cell wall mycolic acid. Q-3 Acetyl transferase convert isoniazid to acetyl isoniazid than isonicotonic acid to glycine conjugate or acetyl hydrazine to diacetyl hydrazine.

[@rukhsarlaghari6856]

Q1. Isonized, Rifampin, streptomycin, pyrazinamide. 2nd Ethanamide,ofloxocin,cephlofloxacin Q2 Isonicotinic acid activated from isoniazid inhibit the bacterial cell wall mycolic acid. Q3 Acetyl transferase convert isoniazid to acetyl isoniazid than isonicotonic acid to glycine conjugate or actyl hydrazine to diacetyl hydrazine.

[@asmaarshad8221]

Ans:1 Isoniazid, rifampin,streptomycin ,pyrazinamide these are first line agents.Ethanamide, ofloxocin cephlofloxcacin, ketamicin these are second line agents. Ans:2# due to its ability to inhibit mycolic acid synthesis, which interferes with cell wall synthesis.inhibit bacterial cell wall Ans:3 # isoniazid is converd inhydro acetyle isoniazid then it convert in isonicotonic acid conjugate with glycine and acetyl hyrazine converted into dyacetyle hydrazine.

[@anamsaeed2644]

Ans - 2 The main pathways of INH metabolism include: Acetylation by N-acetyltransferases to form acetyl-INH (AcINH), and (2) Hydrolysis by amidases, producing isonicotinic acid (INA) and Hydrazine (Hz). AcINH can also be hydrolyzed to form isonicotinic acid (INA) and acetylhydrazine (AcHz).

[@NikitaAdwani1]

1: First line tb drugs: isoniazid, streptomycin, rifampicin, ethambutol, pyranzinamide Second line : amikacin, para amino salicylic acid, ethionamide, viomycin, ciproflocaxin 2: Isoniazid is an inactive drug it is activated by KatG enzyme on surface of M.tb into isonicotinic acid that inhibits the bactetial cell wall containing mycolic acids making M.tb susceptible to reactive oxygen radicals. 3: isoniazid convert in major metabolite N-acetyl isoniazid by enzyme acetyl tranferase. Acetyl isoniazid further convert into two products :(a) isonicotinic acid which forms conjugate with glycine in urine (B) acetyl hydrazine which either gets aceylated into inactive diacetyl hydrazine or convert into reactive metabolites by hepatic microsomal enzymes i.e hydrazines which induce hepatotoxicity .

[@anamsaeed2644]

Ans - 3 Acetylhydrazine hydrazine (Hz) Acetylisoniazid (AcINH) are the major metabolites of INH formed during metabolism.

[@safderhussain6516]

Ans2 basically it inhibits cell wall of bacteria.

[@safderhussain6516]

Faiza roll no 13 Ans 1 .isoniazid, rifampin,streptomycin ,pyrazinamide these are first line agents.Ethanamide, ofloxocin,cephlofloxcacin,ketamicin these are second line agents.

[@safderhussain6516]

Faiza roll no 13