OBJECTIVE To compare the efficacy of two doses (250 microg vs. 500 microg) of r-hCG for oocyte maturation in obese women with a body mass index (BMI) > or = 30 and undergoing assisted reproduction techniques. MATERIALS AND METHODS A Prospective, randomized, clinical study of seventy two patients undergoing IVF/ intracytoplasmic sperm injection cycles with BMI > or = 30 kg/m2. Patients with hi...

Abstract Background The aim of controlled ovarian stimulation is to achieve an optimal number mature oocytes obtain good-quality embryos. High follicular fluid (FF) concentrations FSH, hCG, and LH promote oocyte maturation are associated with a higher probability fertilization. in FF consistently follicles that will lead successful IVF outcome. levels some these biomarkers may vary among differ...

Although colonic lumen NH(4)(+) levels are high, 15-44 mM normal range in humans, relatively few studies have addressed the transport mechanisms for NH(4)(+). More extensive studies have elucidated the transport of NH(4)(+) in the kidney collecting duct, which involves a number of transporter processes also present in the distal colon. Similar to NH(4)(+) secretion in the renal collecting duct,...

The traditional dogma has been that all gases diffuse through all membranes simply by dissolving in the lipid phase of the membrane. Although this mechanism may explain how most gases move through most membranes, it is now clear that some membranes have no demonstrable gas permeability, and that at least two families of membrane proteins, the aquaporins (AQPs) and the Rhesus (Rh) proteins, can ...

Mục tiêu nghiên cứu: Khảo sát đặc điểm về việc sử dụng thuốc nội tiết và đáp ứng điều trị trong thụ tinh ống nghiệm. Đối tượng và phương pháp Nghiên cứu mô tả cắt ngang được thực hiện trên hồ sơ bệnh án của nhân ngoại trú chỉ định nghiệm tại Đơn vị hỗ trợ sinh sản khoa Hiếm muộn, viện Từ Dũ từ tháng 10 năm 2020 đến 3 2021. khảo chung đối tượng cứu, tiết, kết quả các yếu tố liên quan số lượng no...

BACKGROUND Several studies have indicated that human pre-implantation embryo-derived chorionic gonadotropin (hCG) may influence the implantation process by its action on human endometrial epithelial and stromal cells. Despite reports indicating that hCG acts on these cells to affect the production of several cytokines and growth factors (e.g., MIF, IGF-I, VEGF, LIF, IL-11, GMCSF, CXL10 and FGF2...

Proteins of the conserved Mep-Amt-Rh family, including mammalian Rhesus factors, mediate transmembrane ammonium transport. Ammonium is an important nitrogen source for the biosynthesis of amino acids but is also a metabolic waste product. Its disposal in urine plays a critical role in the regulation of the acid/base homeostasis, especially with an acid diet, a trait of Western countries. Ammoni...

BACKGROUND In vitro maturation (IVM) of oocytes followed by fertilization in vitro (IVF) and embryo transfer offers an alternative to conventional IVF treatment that minimises drug administration and avoids ovarian hyperstimulation. However, the technique is less efficient than maturation in vivo. In the present study, a non-human primate model was used to address the hypothesis that the number...

Rh B glycoprotein (Rhbg) is a member of the Rh glycoprotein family of ammonia transporters. In the current study, we examine Rhbg's role in basal and acidosis-stimulated acid-base homeostasis. Metabolic acidosis induced by HCl administration increased Rhbg expression in both the cortex and outer medulla. To test the functional significance of increased Rhbg expression, we used a Cre-loxP approa...

THE RH BLOOD GROUP-RELATED PROTEINS have recently been recognized as ammonia transporters acting in erythrocyte and nonerythrocyte membranes. They play an important role in excretion of nitrogenous waste formed mainly from amino acid metabolism. Because of a restricted availability of water, most terrestrial animals detoxify ammonia into urea or uric acid before removal from the body. However, ...