Кафедра фармакологии и фармации ИНМФО, Волгоград В данной работе представлен результат исследования эффективности ацетилцистеина (1 г/кг, п/о) в отношении формирования аддикции и токсического действия этанола на печень крыс в условиях подострой алкогольной интоксикации. Исследование выполняли на 30 крысах (самцах). Все животные были поделены на 3 группы: опытную, отрицательного и положительного контроля. Этанол вводили в дозе 2 г/кг/сут (в/б) в течение 4 суток. Введение ацетилцистеина выполняли после восстановления установочного рефлекса, утраченного в результате введения этанола. Аддиктивный эффект оценивали в тесте предпочтения места по количеству проведенного времени в камере, ассоциированной с введением этанола. Гепатотоксичность оценивали по уровню триглицеридов и глутатиона печени. Показано, что у крыс, получавших ацетилцистеин после алкогольной интоксикации, аддиктивное поведение было менее выражено по сравнению с животными контрольной группы. Также было показано, что введение ацетилцистеина значимо снижало токсическое действие этанола, что выражалось в увеличении уровня глутатиона гепатоцитов и снижении триглицеридов. Таким образом, введение ацетилцистеина в условиях повторяющегося воздействия этанола способствует снижению привыкания и улучшает функциональное состояние печени, частично предотвращая истощение энергетических запасов гепатоцитов. Ключевые слова: этанол, аддикция, токсичность, печень, похмелье, ацетилцистеин, крысы.
The cerebroprotective effect of novel adamantane derivative of 2-pyrrolidone in rats with brain ischemia was studied. Pathology was modeled by irreversible occlusion of the common carotid arteries. In rats with experimental cerebral ischemia, there was a significant impairment of coordination of movements and sensory-motor functions: it was more difficult for animals to stay on the rotating rod, as well as in the «adhesive removal test» to notice and get rid of the sticker on the volar surface of the forepaws. In the «new object recognition» test, the animals of the control group showed impaired working memory. Course administration of the investigated derivative of 2-pyrrolidone and citicoline contributed to a significant correction of motor and cognitive impairments.
Aim. To estimate the features of neurological status and drinking behaviour in rats during 20 days of chronic alcohol intake. Methods. The current study was performed on 40 male Wistar rats (170-300 g). The animals from the study group were administered 15% solution of ethanol used as the only fluid source. On day 20 of the experiment the alcohol preference test and evaluation of neurological status were performed: tail-suspension (to determine paresis and paralysis), home cage motion activity (to determine gait disorders and stereotypic movements) and features of horizontal beam-walking (evaluation of movement coordination) were assessed, presence of the basic reflexes (startle reflex, external auditory canal reflex, corneal reflex) was controlled. Results. The main neurological signs were presented as ataxic form, in which unsteady gait in beam-walking test was predominant. In the experimental groups, the signs of ataxic form of neurological deficit were demonstrated, when animals slipped off and fell off the beam within 40 s from the beginning of the test. This was associated with the significant increase of discrimination ratio in alcohol preference test. Conclusion. In rat models of chronic alcohol intake, significant changes in drinking behavior and alcohol preference test were found on day 20 of the experiment, reflecting formation of alcohol addiction; changes in drinking behavior were associated with mild and moderate neurological deficit, primarily including movement coordination disorders that illustrates the malfunction of peripheral nervous system.
The present research is devoted to the study of the relationship between the structure of the original synthetic monophenolic antioxidants and their ability to influence the activity of autophagy in tumor cells.
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