Arquivos de gastroenterologia · 2005
[Effect of vitamin C administration on gastric colonization by Helicobacter pylori].
СтатьяРандомизированное исследованиеНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Kamiji Mayra Mayumi, Oliveira Ricardo Brandt de
Аннотация
BACKGROUND: The conventional treatment of Helicobacter pylori infection consists on antibiotics, to which a small but significant number of patients are non-responders. Alternative treatments to the infection have been suggested, including the use of antioxidants. There has been such increasing interest upon vitamin C since it was demonstrated vitamin C concentrations in the stomach of infected patients are significant lower compared to healthy subjects. Pharmacological doses of vitamin C have been investigated for eradication of H. pylori, with controversial results.
AIM: To evaluate the effect of oral administration of vitamin C on H. pylori colonization in the stomach of patients with chronic gastritis and patients with peptic ulcer who had experienced antimicrobial treatment failures.
MATERIAL AND METHODS: Protocol I: randomized, double-blinded, placebo controlled study, with patients with chronic gastritis, with no previous treatment for eradication. Protocol II: open, uncontrolled study, with patients with peptic ulcer, with at least two previous treatments for eradication. Treatment consisted of 5 g vitamin C for 28 consecutive days. The effect of the treatment was evaluated by 14C-urea breath test concerning eradication rate, radioactivity variation and infection suppression.
RESULTS: In Protocol I, 38 patients completed the study--21 received vitamin C and 17 received placebo 28 consecutive days. Eradication rates per-protocol analysis with vitamin C were 0, with 95% confidence interval of 0-15%. In Protocol II, eight patients completed treatment. Eradication rate was 0%, with 95% confidence interval of 0-12%. H. pylori load was not decreased.
CONCLUSION: Administration of vitamin C, in a 5 g/day dosage during 28 days is neither effective for H. pylori eradication nor quantitatively alters the bacteria load in the stomach of infected patients.
AIM: To evaluate the effect of oral administration of vitamin C on H. pylori colonization in the stomach of patients with chronic gastritis and patients with peptic ulcer who had experienced antimicrobial treatment failures.
MATERIAL AND METHODS: Protocol I: randomized, double-blinded, placebo controlled study, with patients with chronic gastritis, with no previous treatment for eradication. Protocol II: open, uncontrolled study, with patients with peptic ulcer, with at least two previous treatments for eradication. Treatment consisted of 5 g vitamin C for 28 consecutive days. The effect of the treatment was evaluated by 14C-urea breath test concerning eradication rate, radioactivity variation and infection suppression.
RESULTS: In Protocol I, 38 patients completed the study--21 received vitamin C and 17 received placebo 28 consecutive days. Eradication rates per-protocol analysis with vitamin C were 0, with 95% confidence interval of 0-15%. In Protocol II, eight patients completed treatment. Eradication rate was 0%, with 95% confidence interval of 0-12%. H. pylori load was not decreased.
CONCLUSION: Administration of vitamin C, in a 5 g/day dosage during 28 days is neither effective for H. pylori eradication nor quantitatively alters the bacteria load in the stomach of infected patients.