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Clinical evaluation of the effect of omeprazole, cimetidine, famotidine and ranitidine on histamine induced cutaneous wheal and flare response. 1993

N Saha, and A Sachdev, and D K Bhasin, and A Sankaranahyanan, and P P Khosla, and K Singh, and P L Sharma
Department of Pharmacology, PGIMER, Chandigarh, India.

The effect of H2 receptor antagonists on immediate cutaneous response to allergens remain controversial. In the present study, the effect of 7-day administration of omeprazole, cimetidine, famotidine and ranitidine on histamine induced wheal and flare reaction was evaluated. A single blind randomized parallel group study with within patient comparison of responses was planned in non-ulcer dyspepsia patients eligible to receive H2 antagonists or omeprazole. None of the drugs produced any changes in the area of the wheal in comparison to respective baseline values. The area of flare was decreased by all the drugs and the percentage decrease in this parameter caused by omeprazole, cimetidine, famotidine and ranitidine was 2.4, 12.3, 20.2 and 13.2, respectively. Only famotidine caused a significant decrease in flare area (p < 0.05).

UI MeSH Term Description Entries
D007194 India A country in southern Asia, bordering the Arabian Sea and the Bay of Bengal, between Burma and Pakistan. The capitol is New Delhi. Republic of India
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009853 Omeprazole A 4-methoxy-3,5-dimethylpyridyl, 5-methoxybenzimidazole derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits an H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS. H 168-68,Omeprazole Magnesium,Omeprazole Sodium,Prilosec,H 168 68,H 16868,Magnesium, Omeprazole,Sodium, Omeprazole
D011899 Ranitidine A non-imidazole blocker of those histamine receptors that mediate gastric secretion (H2 receptors). It is used to treat gastrointestinal ulcers. AH-19065,Biotidin,N (2-(((5-((Dimethylamino)methyl)-2-furanyl)methyl)thio)ethyl)-N'-methyl-2-nitro-1,1-ethenediamine,Ranisen,Ranitidin,Ranitidine Hydrochloride,Sostril,Zantac,Zantic,AH 19065,AH19065,Hydrochloride, Ranitidine
D002927 Cimetidine A histamine congener, it competitively inhibits HISTAMINE binding to HISTAMINE H2 RECEPTORS. Cimetidine has a range of pharmacological actions. It inhibits GASTRIC ACID secretion, as well as PEPSIN and GASTRIN output. Altramet,Biomet,Biomet400,Cimetidine HCl,Cimetidine Hydrochloride,Eureceptor,Histodil,N-Cyano-N'-methyl-N''-(2-(((5-methyl-1H-imidazol-4-yl)methyl)thio)ethyl)guanidine,SK&F-92334,SKF-92334,Tagamet,HCl, Cimetidine,Hydrochloride, Cimetidine,SK&F 92334,SK&F92334,SKF 92334,SKF92334
D004342 Drug Hypersensitivity Immunologically mediated adverse reactions to medicinal substances used legally or illegally. Allergy, Drug,Hypersensitivity, Drug,Drug Allergy,Allergies, Drug,Drug Allergies,Drug Hypersensitivities,Hypersensitivities, Drug
D004415 Dyspepsia Impaired digestion, especially after eating. Indigestion,Dyspepsias,Indigestions
D005260 Female Females
D006632 Histamine An amine derived by enzymatic decarboxylation of HISTIDINE. It is a powerful stimulant of gastric secretion, a constrictor of bronchial smooth muscle, a vasodilator, and also a centrally acting neurotransmitter. Ceplene,Histamine Dihydrochloride,Histamine Hydrochloride,Peremin

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