View clinical trials related to AMH.
Filter by:There are various known parameters for assessing ovarian reserve, including ovarian volume, antral follicle count, follicle stimulating hormone (FSH) and Inhibin B at the beginning of the menstrual cycle, as well as anti-Mullerian hormone (AMH). Anti-müllerian hormone is a dimeric glycoprotein and a member of the transforming growth factor β family that plays a role in the regulation of follicular development. AMH is produced by granulosa cells of the early developing follicles in the ovary, and continues to be expressed in the growing follicles until these follicles have reached a size of 4-6 mm and a differentiation state at which AMH becomes receptive for exogenous FSH, and may be selected for dominance.It exerts its biological effects through the receptor AMHR2, which is present on granulosa and theca cells. Considering the important role of the AMH signalling pathway in regulating FSH sensitivity in the ovary and follicular recruitment and selection, it is appropriate to consider that variation in the genes encoding key proteins in the pathway may influence ovarian response. The aim of this study is to investigate the effect of the distribution of single gene polymorphisms of the AMHR2 receptor gene A-482G/rs200255 in patients with unexplained infertility and to compare this distribution with the distribution in women without infertility.
Therefore, the main objective of this prospective pilot study is to evaluate a complete hormonal profile in women with hypogonadotropic hypogonadism, including anti-mullerian hormone (AMH) and antral follicle count. Changes in this regard will be evaluated after 2 months of individual treatment.
In China, the incidence of infertility is about 15%, and patients need to use assisted reproductive technology (ART) to obtain pregnancy. It is particularly important to accurately predict the patient's ovarian response before initiating controlled ovulation hyperstimulation (COH). At present, the commonly used AMH detection method is enzyme-linked immunoassay (ELISA), and it has obtained the normal reference range for ovarian response. In recent years, with the development of detection technology, chemiluminescence immunoassay（CLIA） detection reagents have been successively used for the detection of AMH. However, there are few studies on the comparison of these two detection methods. The predictive value of the new method on ovarian response was lack. Therefore, by comparing the two methods of ELISA and CLIA detection of AMH levels in this study, the predictive value of poor ovarian response (the number of retrieved oocyte ≤ 3) and high response (the number of retrieved oocyte ≥ 15) in IVF/ICSI stimulation cycle was analyzed. In order to provide more reference basis for individualized COH, the AMH cutoff value of low and high ovarian response by the new method predicts was analyzed. At the same time, the prediction value of the two methods is compared to determine whether the new CLIA is suitable for clinical application.
Anti-Mu¨llerian hormone (AMH) is an established marker of ovarian reserve (La Marca et al., 2010; Nelson et al., 2009) and predicts both high and low responses in ovarian stimulation cycles (Eldar-Geva et al., 2005; Nardo et al., 2009; Nelson et al., 2007). Presently, AMH helps clinicians counsel patients prior to IVF treatment (La Marca et al., 2011), despite the fact that it fails to predict who will become pregnant (Lamazou et al., 2011; Riggs et al., 2011). It has been demonstrated that poor responders can achieve both pregnancy and live birth (Weghofer et al., 2011). There are few studies regarding extremely low AMH concentrations and live births (Fraisse et al., 2008; Tocci et al., 2009; Weghofer et al., 2011) and they present either a small number of patients or limited data describing the groups of investigated patients. Another factor affecting pregnancy rates is endometriosis, a chronic gynaecological disease characterized by the presence of functional endometrial tissue outside the uterine cavity (Koninckx et al., 1991). Many studies have reported that pregnancy rates are lower in women with endometriosis than in controls (Gupta et al., 2008; Koninckx et al., 1991 Pellicer et al., 2000). Lower AMH serum concentrations are associated with endometriosis severity (Shebl et al., 2006). The primary objective of the present study was to assess the clinical pregnancy rates in women with extremely low AMH concentrations with respect to age.
To observe the effects of hypogastric artery ligation on serum antimullerian hormone levels.
The aim of this study is to investigate whether there is a correlation between anti-Müllerian hormone during long-term use of combined oral contraceptives and the recovery time before recovered menstrual cycle after discontinuation of oral contraceptives.