View clinical trials related to Hormone Disturbance.
Filter by:Relative Energy Deficiency in Sport (RED-S) characterizes a range of negative health and performance outcomes that result from chronically low energy availability. RED-S concerns high performance junior and senior athletes across Canada and has a prevalence rate of 3-60%. Our ability to assess and diagnose RED-S remains poor. Accordingly, we aim to create the best parameters to diagnose and manage RED-S; along with information of the prevalence and severity across Canada and globally. These outcomes are expected to have a significant positive impact on the health and performance of Canadian athletes in preparation for the Olympic Games in 2022 and beyond.
This study is designed as a prospective non-randomized longitudinal single-center cohort study. It will enroll around 120 patients undergoing total thyroidectomy with data being collected from September 2019 up to December 2019. The hypothesis is that a significant association and cut-off point in PTH levels may be established with regard to postoperativne hypocalcaemia. Primary outcome measures are presence of hypocalcemia on the first and fifth postoperative day. Secondary outcome measures are the need for calcium supplement therapy during the first five postoperative days and amount of medication given. Associations between variables will be assessed using Spearman's rho rank correlation coefficient, the Kruskal-Wallis test for independent samples and a logistic regression model to test statistically significant correlations between PTH and serum calcium values as a primary end point.
The principal aim of the present study is to analyze adiponectin, omentin-1, apelin and visfatin plasma levels in patients with and without AF in an effort to identify their potential role in the development of AF.
The hypothesis of a link between depression and Hypothalamic-Pituitary Axis (HPA) dysfunction is now experienced. Since a first description in 1949 this link has made the HPA one of the most investigated hormonal axis in depression. Many studies have demonstrated quantitative variations of circulating cortisol in situation of depression including increasing of basal concentration of blood cortisol or Adrenocorticotropic Hormone (ACTH). Furthermore there is an attenuated negative feedback performance of the blood cortisol on the release of ACTH and cortisol. This attenuation seems to be a consequence of a bluntness of sensibility of the hypothalamic cells and their Glucocorticoids Receptors type 2. Actually it seems that these phenomena are included in a diversion of the cortisol's action. From a function of acute stress management, with short-time exposures, the cortisol become one of the factors increasing an allostatic load, or resulting of this increase, maintaining a permanent state of stress, an inertia delay to adaptation and facilitating the emergence of psychiatric disorders. This lack of function can be estimated by the Dexamethasone Suppression Test (DST) which, by stimulation attempting of feedback mechanisms by Dexamethasone (which has cortisol-like properties), can show a non-suppressor population with HPA bluntness. If this biological feature isn't a biological marker of depression, because of a lack of specificity and sensibility, is notably associated with a poor outcome and higher risks of suicidal behaviors and pharmacological resistance. Many studies have explored possibilities of action on the HPA to treat depression or improve antidepressant specific therapeutics, with inconstant results. One of the most promising molecule seems to be Metyrapone, a reversible inhibitor of the 11ß-hydroxylase enzyme which transform desoxycorticosterone and 11deoxycortisol to respectively corticosterone and cortisol. There have been several open label studies which aim to explore the possibility of an effect of the combination between Metyrapone and antidepressant molecules. This led to two randomized double blind controlled versus placebo studies whose conclusions are divergent. These conclusions and their heterogeneity lead to think that there is a sub-population which could be better responder to this type of association. Physiopathological knowledges and preliminary observations in DST non-suppressor population by using anti-glucocorticoids therapies , makes it possible to consider possible that responsive sub-population can be defined by the feature " DST non-suppressor ".