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To ascertain the value of using immature oocytes in an intracytoplasmic sperm injection (ICSI) program, the authors designed a schedule, at 5 p.m. on day 1 (the day of oocyte retrieval) and at 8 a.m. and 2 p.m. on day 2, to recognize and inject the in vitro matured (IVM) oocytes. For the 1166...
Low hypoosmotic swelling (HOS) test scores were found to be associated with lower pregnancy rates. The mechanism seems to be related not so much to impaired fertilization but to inhibition of implantation. The defect may be present in males with normal or subnormal semen specimens. However,...
Semen analysis constitutes the most important investigation of male infertility. However, the true anomalies present in defective sperm cells have been only partially characterized. The integrity of the sperm chromatin may play the most important role, particularly in ICSI, where most of the...
Thyroid hormones play an important role in epididymal function. Hypothyroid animals experience a significant decrease in the number and forward motility of sperm and a remarkable impairment of epididymal morphology. However, it is yet unknown if such activity is due to direct actions of...
Human sperm viability is essential for successful fertilization. Eosin Y is the usually accepted method for sperm viability assessment, though the hypoosmotic swelling test has been proposed for the selection of viable spermatozoa in procedures such as intracytoplasmic sperm injection. The...
A previous prospective study using matched samples found that sperm with low hypoosmotic swelling (HOS) scores had no adverse effect on fertilization rates but markedly reduced pregnancy and implantation rates. The present study attempted to corroborate or refute the aforementioned study by...
The aim of this study was to confirm the presence of soluble interleukin-6 receptor (SIL-6R) in seminal plasma, to show eventual differences between SIL-6R concentrations in fertile and infertile men, and to evaluate the possible value of measuring these substances for the diagnosis of male...
SGP-l/prosaposin can be secreted or targeted to the lysosomes where it is processed into smaller saposins (A, B, C, and D) required for the hydrolysis of glycosphingolipids. The deficiency of saposins B and C results in variant forms of metachromatic leukodystrophy and Gaucher?s disease,...
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