ABSTRACT
Chronic disease is defined as a persistent, recurrent illness with long course. Common symptoms include insulin resistance, dyslipidemia, chronic inflammation, and so on. It is well known that chronic dehydroepiandrosterone (DHEA) or dihydrotestosterone (D H T) exposure induces symptoms in rats or mice. These animals possess characteristics of obesity, ovarian dysfunction, vascular endothelial dysfunction, inflammation, and so on. In addition, DHT-treated animals have been used to explore insulin resistance, dyslipidemia, and biorhythm disorder. DHEA-treated animals were fit to detect ovarian stress. Although DHEA-treated animals does not apply to studies of metabolic diseases such as hyperlipidemia, DHEA-treated animals under high fat diet represent the related phenotypes. Based on the previous research, it can be predicted that new achievements will be made in endometrial development, ovarian cell function, inflammation modulation, atherosclerotic, and biorhythm disorder by using these hyperandrogenic animal models.
ABSTRACT
Objective To investigate the prevalence of low T3 syndrome in patients with acute myocardial infarction(AMI) and explore the effect of low T3 syndrome on outcome of AMI.MethodsThree hundred and thirty-eight patients with AMI admitted to cardiac care unit(CCU) underwent examinations of thyroid function and cardial ultrasound,and were further categorized according to thyroid hormone profile.The records of noninvasive bi-level positive airway pressure(BiPAP)ventilation utilization,length of hospital stay,mortality during hospitalization were evaluated,and the related factors were analysed.ResultsOne hundred and thirty-nine of the 338 patients(41.12%) with AMI complicated with low T3 syndrome.Free triiodothyronine(FT3) was the independent influential factor for length of hospital stay.Low FT3 was significantly correlated with noninvasive BiPAP ventilation utilization and mortality during hospitalization.The average time of follow-up was(21.4?8.1) months.It was revealed by multivariate Cox regression analysis that FT3 was the chief predictor for cumulative death(risk ratio,4.25;95% confidential interval,2.30-7.87),followed by age and left ventricular ejection fraction.ConclusionThe recognition of AMI complicated with low T3 syndrome plays an important role in predicting the disease severity and outcome.