OBJECTIVE To evaluate and compare standard sperm parameters, lipid peroxidation of sperm plasma membranes, antioxidant capacity of seminal plasma, and sperm chromatin integrity in ejaculates from men whose partners have a history of recurrent pregnancy loss and from a control group of men with recent fertility. DESIGN Descriptive study. SETTING Reproduction Program, University of Antioquia,...

OBJECTIVE The value of sperm morphology as a predictor of a man's fertilizing potential has often been challenged because of different classification systems used to distinguish between normal and abnormal spermatozoa. The study aimed to monitor the reading skills of 53 laboratory technologists who are enrolled in a continuous quality control program for sperm morphology assessment. DESIGN Pr...

Since the birth of the first test-tube baby in 1978, Assisted Reproduction Techniques (ART) has been performed all over the world to alleviate human infertility. In 1991 with the advent of the Intra-Cytoplasmic Sperm Injection (ICSI) technique, a reasonable rate of male infertility cases due to severe oligospermia were successfully solved. However, several concerns about the safety and impact o...

An experiment was made to test the fertility of ram semen showing morphological abnormality due to exposure of the rams to high ambient temperature. Pyriform cells distinguishable by posterior constriction of the head, tailless sperm and an acrosomal cap abnormality were identified. Three groups of 20 Merino ewes were each mated to two rams which had been heated for four days, or for two days, ...

This study was carried out to investigate the effects of ivermectin on the hyaluronidase activities of blood serum and semen and on the sperm characteristics in sheep. In this investigation 18 sheep, at the age of 2 years and weighing between 5060kg were used. After the administration of ivermectin subcutanously at a dose of 0.2 mg/kg, semen and blood samples were taken at different times. The ...

Abstract Study question Is Next Generation Sequencing (NGS) an effective diagnostic tool for sperm abnormalities? Summary answer NGS male factor gene panel can be a potent discovering pathogenic variants linked to abnormalities. What is known already Male infertility, responsible half of infertility cases, often shows as absence or decreased count (azoospermia, criptozoospermia oligozoospermia)...

shwaehman syndrome, next to cystic fibrosis, is the second cause of congenita! exocrine pancreatic insufficiency in children. it appears as steatorrhea, recurrent infections and hematologic abnormalities such as neutropenia, skeletal dysplasia and short stature. in this study, we reviewed 3 patients' histories. all of them showed cellular chemotaxic defect. one of them had been affected by neph...

The recent article by Williams and Kriegsfeld (2012) was highly interesting. Notably, decreased reproductive function with co existent sleep disorders may be seen in a number of pathological conditions in endocrinology. For example, patients with obstructive sleep apnea (OSA) usually demonstrate low levels of free testosterone. These decreased levels in OSA patients are remarkably independent o...