Study summary · research use only
[Effect of new synthetic anxiolytic selank on gastric wall blood flow and mesenteryc lymphatic vessels contractility in anesthetized rats]
Plain-language summary
Paraphrased from the published abstract below — not a verdict on whether anything works.
In this study of anesthetized white rats, the authors examined the heptapeptide Selank on gastric wall blood flow and mesenteric lymphatic vessel contractility, using hydrogen clearance and in situ microscopy. They describe Selank as an anxiolytic with antiulcerogenic action. They report that Selank did not change basal gastric blood flow but normalized flow reduced by indomethacin, and that low concentrations (10(-12)-10(-14) M) increased the amplitude and frequency of lymphatic vessel contractions while high doses (10(-6)-10(-10) M) increased amplitude but decreased frequency. The authors interpret maintained blood flow and lymphatic contractility as a possible mechanism of Selank's antiulcerogenic properties.
Abstract
The influence of a new heptapeptide Selank on microcirculation in anesthetized white rats was investigated. Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) is a new synthetic anxiolytic which exerts obvious antiulcerogenic action and promotes healing of experimental ulcers. Action of the peptide on gastric blood flow in the stomach by using the method ofhydrogenic clearance and Selank action on mesenteric lymphatic contractility by microscopical observation in situ, were studied. Selank fail to influence basal gastric blood flow but it can normalize blood flow reduced by indomethacin. The study of dose-depended of Selank effect on lymphatic vessels contractility showed that its low concentration (10(-12)--10(-14) M) enhanced amplitude and increase frequency of lymphatic vessel contractions which indicates an enhancement of lymphatic flow. The high doses of peptide (10(-6)--10(-10) M) also augmented the contraction amplitude but decreased its frequency. The maintenance of adequate blood flow and lymphatic vessel contractility can be one of the mechanisms of the Selank antiulcerogenic properties.
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