Motile sperm organelle morphology examination (MSOME) involves the use of differential interference contrast microscopy (also called Nomarski contrast) at high magnification (at least 6300x) to improve the observation of live human spermatozoa. In fact, this technique evidences sperm head vacuoles that are not necessarily seen at lower magnifications - particularly if the vacuoles are small (i....

background: isolating sperms with normal chromatin content is considered vital in intra cytoplasmic sperm injection treatment. today, researchers are trying to find new procedures to select sperms with normal chromatin content and morphology. this study examines the effectiveness of zeta, density gradient centrifugation (pure sperm) and combination of pure- zeta procedures in selecting sperms w...

Background: Sperm chromatin integrity assessment has been suggested as fertility predictor. The aim of this study was to examine the relationship between the results of sperm chromatin structure assay (SCSA) and the outcome of intrauterine insemination IUI. Materials and Methods: A total of 576 consecutive couples undergoing IUI were included and IUI was performed. SCSA results were expressed a...

in human fertilization, the sperm centrosome nucleates a radial array of microtubules called the sperm aster. the sperm aster is responsible for apposition of male and female pronuclei, and later gives rise to the first meiotic spindle. the objective of this study was to determine microtubule assembly and chromatin configuration in rabbit oocytes following intracytoplasmic injection with human ...

Akt promotes cell survival by phosphorylating and inhibiting components of the intrinsic cell death machinery. Akt translocates into the nucleus upon exposure of cells to survival factors, but little is known about its functions in the nucleus. Here, we show that acinus, a nuclear factor required for apoptotic chromatin condensation, is a direct target of Akt. We demonstrate that Akt phosphoryl...

Spermatozoa are more efficient at supporting normal embryonic development than spermatids, their immature, immediate precursors. This suggests that the sperm acquires the ability to support embryonic development during spermiogenesis (spermatid to sperm maturation). Here, using Xenopus laevis as a model organism, we performed 2-D Fluorescence Difference Gel Electrophoresis (2D-DIGE) and mass sp...

Background: There has been a growing claim that cell phone usage may have a detrimental effect on sperm chromatin. Infertile men possess anomalies in the composition of their sperm nuclei, displaying higher levels of loosely packaged chromatin and damaged DNA. In this study we examined the relationship of cell phone radiation and the protection effect of alpha_tocopherol on human sperm DNA. Mat...

A65-year-old female was admitted to our Institute for anemia-related symptoms. The hematological findings were as follows: Hb 65 g/L, platelet count 45310/L; WBC 18310/L with neutrophils 74%, lymphocytes 8%; monocytes 2%, promyelocytes 2%, myelocytes 12%, metamyelocytes 2%. When observed under the microscope, neutrophils were characterized by loss of segmentation (pelgeroid features) and abnorm...

DNA in mammalian, and most vertebrate sperm, is packaged by protamines into a highly condensed, biochemically inert form of chromatin. A model is proposed for the structure of this DNA-protamine complex which describes the site and mode of protamine binding to DNA and postulates, for the first time, specific inter- and intraprotamine interactions essential for the organization of this highly sp...