This publication discusses two compounds belonging to the psychoactive substances group which are studied in the context of depression treatment—psilocybin and esketamine. The former is a naturally occurring psychedelic. The latter was invented in the laboratory exactly 60 years ago. Although the substances were controversial in the past, recent studies indicate the potential of those substances as novel antidepressant agents. The PubMed/MEDLINE database was used to identify articles for systematic review, using the following search terms: (depression) AND (psilocybin) OR (ketamine). From 617 items, only 12 articles were obtained in the final analyses. Three articles were devoted to psilocybin in depression treatment and nine to esketamine. In most studies, esketamine showed a significant reduction in both depressive symptoms and suicidal ideation shortly after intake and after a month of treatment compared to baseline and to standard-of-care antidepressant agents. Psilocybin’s antidepressive effects occurred one day after intake and after 6–7 weeks of treatment and were maintained for up to 6 or 8 months of follow-up. One study indicated that psilocybin’s effects are comparable with and may be superior to escitalopram treatment. Both esketamine and psilocybin demonstrated rapid and long-term effects in reducing depression symptoms and, after overcoming some limitations, may be considered as novel antidepressant agents in future.
Background Resveratrol is a polyphenol with many properties, including activity against glycation, oxidative stress, inflammation, neurodegeneration, carcinogenesis and aging. It appears to be a promising compound for the prevention and treatment of metabolic diseases. The aim of this review is to summarize the results of the latest clinical trials that concern effects of resveratrol in diabetes mellitus type 1 and 2 and its complications - diabetic foot ulcers, diabetic nephropathy and non-alcoholic fatty liver disease. Aim of the study Based on in vitro studies and animal models, it has been observed that resveratrol reverses the factors causing premature death: obesity, hypertension, and hyperlipidemia. Because of its anti-inflammatory, antioxidant, cardioprotective and blood lowering glucose effects, it appears to be a promising compound for the treatment of metabolic conditions. The review presents different clinical trials concerning the efficiency of resveratrol supplementation in patients with diabetes mellitus and metabolic syndrome and their complications. Most studies focused on assessing the effect of resveratrol supplementation as an adjunctive treatment of diabetes mellitus type 2 and in this group of patients it gave the best results causing reduction of fasting glucose levels, fasting insulin concentration, insulin resistance and improvement of insulin sensitivity and lipid profiles. Conclusions Resveratrol remains a potential drug in the treatment of metabolic diseases like diabetes mellitus. However, the results of the conducted trials are inconscient. More research is needed to confirm the effectiveness of resveratrol supplementation in treating diabetes, its complications and other metabolic conditions.
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