Clinical Research Directory

Kisspeptin to Quantify GnRH Neuronal Function in Health and Disease

The objective of this protocol is to use a case-control paradigm to compare the response to an intravenous administration of kisspeptin in individuals with and without post-covid-19 syndrome. The study subjects will receive a single bolus of kisspeptin. This study will utilize the technique of frequent blood sampling (q10 minutes) to provide detailed neuroendocrine characterization of endogenous LH secretion before and after kisspeptin administration. This frequency of blood sampling is required to define the features of LH pulses.

Interest of Morphokinetic Parameters of Early Embryonic Development in the Birth Rates in Vitro Fertilization

In France, nearly 3% of children are conceived by the technique of Assisted Reproductive Medicine, of which nearly 70% by in vitro fertilization (IVF). The rates of clinical pregnancy by oocyte retrieval or embryo transfer have not changed much. The use of mono-embryo transfer reduces the risk of multiple pregnancies and associated obstetric complications. The choice of embryo to transfer or freeze is a key element in improving the chances of success of IVF. It is usually based on conventional morphological criteria (reference method) that are punctual, qualitative and subjective. However, embryo morphology at early stages has little predictive value for obtaining a late-stage embryo and its chances of implantation. The recent use of time-lapse technology during embryonic culture makes it possible to associate morphological criteria with continuous monitoring of the kinetics of embryonic development. The choice of the embryo to be transferred is then made according to morphokinetic criteria (conventional morphological criteria to which are added the data of the kinetics of embryonic development). Two recent retrospective studies give contradictory results, the first shows higher birth rates in the group of embryos selected according to conventional morphological criteria, the second concludes that morphokinetic analysis is superior. Morphokinetic criteria would also be more objective and reproducible. However, the use of morphokinetic parameters remains controversial in the literature.

Autologous Decidual-like Natural Killer Cells Therapy for Reproductive Failure

The aim of this study is to verify the efficacy of in vitro induction of autologous decidual-like NK cells therapy for reproductive failure associated with uterine NK cells abnormalities.

The Molecular Basis of Inherited Reproductive Disorders

The goal of this study is to learn more about the genes that control puberty and reproduction in humans.