Ultrastructures spermatozoa taken from the seminiferous tubules of rat testes (Rattus norvegicus) were observed under transmission electron microscopy, using the techniques of ultrathin sections, microspreading specimens and replicas. The heads of isolated spermatozoa were of homogeneously high electron density, and had a slightly curved end; in longitudinal sections these zones were composed of a compact homogeneous DNA, covered by a nuclear envelop, cell membrane and small amounts of acrosomal material. The middle piece contained the modified centrioles in the junction zone and flagella microtubules. In transverse sections as well as in replicas, this region consisted of 10 pairs of microtubules and 9 dense fibers surrounded circularly by the mitochondria (mitochondrial sheath).
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
L-carnitine protects against oxidative damage and neuroinflammation in cerebral cortex of rats submitted to chronic chemically-induced model of hyperphenylalaninemia.
Metab Brain Dis
January 2025
Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Rio Grande do Sul, Avenida Ipiranga, 2752, Porto Alegre, CEP 90610-000, RS, Brazil.
Phenylketonuria is a genetic disorder characterized by high phenylalanine levels, the main toxic metabolite of the disease. Hyperphenylalaninemia can cause neurological impairment. In order to avoid this symptomatology, patients typically follow a phenylalanine-free diet supplemented with a synthetic formula that provides essential amino acids, including L-carnitine.
View Article and Find Full Text PDFTherapeutic effects of erythropoietin-alginate/chitosan hydrogel on impaired male rat fertility after spinal cord injury.
Mol Biol Rep
January 2025
Department of Clinical Science, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Background: Infertility is a significant issue in spinal cord injury (SCI) patients. Men with SCI often experience erectile and ejaculatory dysfunctions, and low sperm quality leading to impaired fertility. In this study, we investigated the effectiveness of Erythropoietin (EPO)alginate/chitosan (CH-AL) hydrogel on SCI-induced male rat infertility.
View Article and Find Full Text PDFGallic acid mitigates lipopolysaccharide-induced testicular inflammation via regulation of the NF-κB and PK2/PKR1 pathway.
J Mol Histol
January 2025
Department of Histology and Embryology, Faculty of Medicine, Trakya University, Edirne, 22030, Turkey.
Genital tract infections are common causes of male infertility, and most of diagnosed men are asymptomatic. This study examined the effect of gallic acid (GA) against lipopolysaccharide (LPS)-induced testicular inflammation. Thirty-two Spraque Dawley, 2.
View Article and Find Full Text PDFBackground/aims: Bruise is the extravasation of blood that may be mild or severe. Bone marrow mesenchymal stem cells (BM-MSCs) are one of the most promising cells used in regenerative medicine for treating many disorders. We aimed to evaluate the efficiency of BM-MSCs in treating cutaneous bruises.
View Article and Find Full Text PDF() is a causative gene for genetic hydrocephalus found in hemorrhagic hydrocephalus () mice. The knockout (KO) rat has subcortical heterotopia with frequent brain hemorrhage as seen in mice. In this study, we report aberrant alpha-smooth muscle actin (α-SMA) expression in the wall of lateral ventricle of the KO rats.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!