12 rezultatus
To determine if 1,3-Butanediol (BD), which protects mice from hypoxia, would extend the tolerance of rats to ischemic-hypoxia, the Levine rat (unilateral carotid ligation and conscious hypoxic exposure) was modified to record mean arterial pressure (BP), heart rate (HR), central venous pressure
In previous studies from our laboratory a positive correlation between elevated blood ketone levels and the survival time (ST) during hypoxia (4-5% oxygen) was observed in fasted and alloxan diabetic mice. To test the hypothesis that ketosis was somehow increasing the tolerance of mice to hypoxia,
DL-1,3-butanediol (DL-BD) is an ethanol dimer which affords cerebral protection in various experimental models of hypoxia and ischemia but its mechanism of action is unknown. DL-BD is a ketogenic alcohol and it has been proposed that its protective effect was accomplished through cerebral
The objective of this study was to determine if 1,3-butanediol would reduce a neurologic deficit in rats exposed to ischemic-hypoxia (Levine rats). Age and weight matched male Sprague-Dawley rats were anesthetized with 2% halothane. The right common carotid and external jugular vein were ligated and
1,3-Butanediol (BD) treatment was previously shown to produce a dose-related increase of the plasma levels of D-beta-hydroxybutyrate (BHB) and to protect brain tissue against hypoxia and ischemia. The purpose of this study was to test whether BD-induced hyperketonemia was associated with changes in
Previous studies have shown that 1,3-butanediol (BD) has beneficial effects in experimental models of hypoxia or ischemia but the mechanism by which it exerts its protective effects remains unknown. BD is converted in the body to beta-hydroxybutyrate (BHB) and it has been proposed that its effects
1,3-Butanediol (BD) is converted in the body to beta-hydroxybutyrate, and previous studies have shown that hyperketonemia had beneficial effects in experimental models of generalized hypoxia. The aim of this study was to determine if BD would reduce brain damage following cerebral ischemia. A
Previously we found that 1,3-butanediol-treated mice live longer during hypoxia. We hypothesized that 1,3-butanediol could reduce the brain's accumulation of potentially cytotoxic lactate and/or elevate brain substrate availability (ketones or glucose) and thus maintain the brain's energy producing
The Siberian wood frog Rana amurensis is a recently discovered example of extreme hypoxia tolerance that is able to survive several months without oxygen. We studied metabolomic profiles of heart and liver of R. amurensis exposed to 17 days of extreme hypoxia. Without oxygen, the studied tissues
A case of acute oral poisoning by 1.4-butanediol, complicated by the development of severe hypoxia in a 34-year-old patient actively engaged in bodybuilding, is presented. The psychoactive substance was used by the patient to increase sexual activity and physical stamina. The duration of systematic
A coorelation has been observed between increased blood ketones and the tolerance of mice to hypoxia (4-5% oxygen). In previous studies fasted mice, alloxan diabetic mice and mice given 1,3-butanediol were found to be ketotic and to have increased tolerance to hypoxia. We attempted to induce a
Stable and mature vascular formation is a current challenge in engineering functional tissues. Transient, non-viral gene delivery presents a unique platform for delivering genetic information to cells for tissue engineering purposes and to restore blood flow to ischemic tissue. The formation of new