首页> 外文OA文献 >The use of cimetidine to reduce dapsone-dependent methaemoglobinaemia in dermatitis herpetiformis patients.
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The use of cimetidine to reduce dapsone-dependent methaemoglobinaemia in dermatitis herpetiformis patients.

机译:西咪替丁用于减少疱疹样皮炎患者中依赖氨苯砜的甲铁血红蛋白血症。

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摘要

1. We have attempted to reduce dapsone-dependent methaemoglobinaemia formation in six dermatitis herpetiformis patients stabilised on dapsone by the co-administration of cimetidine. 2. In comparison with control, i.e. dapsone alone, methaemoglobinaemia due to dapsone fell by 27.3 +/- 6.7% and 26.6 +/- 5.6% the first and second weeks after commencement of cimetidine administration. The normally cyanotic appearance of the patient on the highest dose of dapsone (350 mg day-1), underwent marked improvement. 3. There was a significant increase in the trough plasma concentration of dapsone (2.8 +/- 0.8 x 10(-5)% dose ml-1) at day 21 in the presence of cimetidine compared with control (day 7, 1.9 +/- 0.6 x 10(-5)% dose ml-1, P less than 0.01). During the period of the study, dapsone-mediated control of the dermatitis herpetiformis in all six patients was unchanged. 4. Trough plasma concentrations of monoacetyl dapsone were significantly increased (P less than 0.05) at day 21 (1.9 +/- 1.0 x 10(-5)% dose ml-1) compared with day 7 (1.6 +/- 0.9 x 10(-5)% dose ml-1:control). 5. Over a 12 h period, 20.6 +/- 8.9% (day 0) of a dose of dapsone was detectable in urine as dapsone hydroxylamine. Significantly less dapsone hydroxylamine was recovered from urine at day 14 (15.0 +/- 8.4) in the presence of cimetidine, compared with day 0 (control: P less than 0.05). 6. The co-administration of cimetidine may be of value in increasing patient tolerance to dapsone, a widely used, effective, but comparatively toxic drug.
机译:1.我们曾尝试通过共同使用西咪替丁来减少在氨苯砜上稳定的六例皮炎性疱疹样皮炎患者中氨苯砜依赖性甲氨蝶呤血症的形成。 2.与对照组(即单独使用氨苯砜)相比,在开始服用西咪替丁后的第一周和第二周,氨苯砜所致的甲铁血红蛋白血症下降了27.3 +/- 6.7%和26.6 +/- 5.6%。服用最高剂量的氨苯砜(350 mg day-1)的患者通常出现紫otic现象,症状明显改善。 3.与对照组相比,在存在西咪替丁的情况下,第21天氨苯砜的谷血浆浓度(2.8 +/- 0.8 x 10(-5)%剂量ml-1)显着增加(与第7天相比,1.9 + / -0.6 x 10(-5)%剂量ml-1,P小于0.01)。在研究期间,氨苯砜介导的所有6例疱疹样皮炎控制均未改变。 4.与第7天(1.6 +/- 0.9 x 10)相比,第21天(1.9 +/- 1.0 x 10(-5)%剂量ml-1)的单乙酰氨苯砜的低谷血浆浓度显着增加(P小于0.05)。 (-5)%剂量ml-1:对照)。 5.在12小时内,尿液中氨苯砜羟胺的量可检测出20.6 +/- 8.9%(第0天)氨苯砜的剂量。与第0天相比,在存在西咪替丁的情况下,第14天(15.0 +/- 8.4)从尿液中回收的氨苯砜羟胺的数量明显少于第0天(对照组:P小于0.05)。 6.西咪替丁的共同给药对提高患者对氨苯砜的耐受性可能是有价值的,氨苯砜是一种广泛使用,有效但相对有毒的药物。

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