Fifteen rats were given a sodium cyanate-rich diet for 18 months and at the end of that period, all of them had developed motor weakness and were perfused for ultrastructural study. A peripheral neuropathy involving mostly the roots and sciatic nerves was found and the main ultrastructural lesion was vacuolization of myelin. There was marked distinction of the myelin sheaths and phagocytosis of myelin. Axoplasmic changes were minimal and consisted of accumulation of glycogen within vacuoles. Invaginations of adaxonal Schwann cell membranes and axolemma forming loops and separate chambers were also present. There was active participation of macrophages in the splitting of myelin as well as in phagocytosis of myelin remnants. There was evidence of remyelination with the toxic damage. We concluded that cyanate induced neuropathy is due mostly to a myelinotoxic effect of the drug, although parallel but less intense axonal damage cannot be excluded.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Aberrant acetylation caused by a CDYL splicing mutation contributes to thin mid-piece related asthenoteratozoospermia and male infertility.
Andrology
January 2025
Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
Objectives: Acetylated tubulin is a hallmark of flagellar stability in spermatozoa, and studies have demonstrated the ability of CDYL to function as a tubulin acetyltransferase in spermatozoa. Of note, germline conditional knockout of Cdyl can lead to asthenoteratozoospermia and infertility in male mice. However, the role of CDYL gene in human fertility remains uncharacterized.
View Article and Find Full Text PDFDevelopment and evaluation of a microfluidic human testicular tissue chip: a novel platform for reproductive biology and pharmacology studies.
Lab Chip
January 2025
Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China.
Organ-on-a-chip culture systems using human organ tissues provide invaluable preclinical insights into systemic functions . This study aimed to develop a novel human testicular tissue chip within a microfluidic device employing computer-aided design software and photolithography technology. Polydimethylsiloxane was used as the primary material to ensure marked gas permeability and no biotoxicity, enabling effective mimicry of the testicular microenvironment.
View Article and Find Full Text PDFUnique ultrastructural organization of human rod photoreceptors.
Commun Biol
January 2025
Department of Ophthalmology, Duke University School of Medicine, Durham, NC, USA.
Rod and cone photoreceptor cells are specialized neurons responsible for transforming the information reaching the eyes in the form of photons into the language of neuronal activity. Rods are the most prevalent photoreceptor type, primarily responsible for light detection under conditions of limited illumination. Here we demonstrate that human rods have a morphological organization unique among all described species, whereby the cell soma extends alongside the light-sensitive outer segment compartment to form a structure we have termed the "accessory inner segment.
View Article and Find Full Text PDFNitrogen availability modulates carotene biosynthesis, chromoplast biogenesis, and cell wall composition in carrot callus.
Plant Cell Rep
January 2025
Department of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, al. Mickiewicza 21, 31-120, Krakow, Poland.
Carrot callus grown on a medium with increased nitrogen have reduced carotenoid accumulation, changed gene expression, high amount of vesicular plastids and altered cell wall composition. Carotenoid biosynthesis is vital for plant development and quality, yet its regulation under varying nutrient conditions remains unclear. To explore the effects of nitrogen (N) availability, we used carrot (Daucus carota L.
View Article and Find Full Text PDFAlcohol promotes CPT1A-induced lipid metabolism disorder to sentinel-regulate acute pancreatitis.
Eur J Med Res
January 2025
Medical Imaging Key Laboratory of Sichuan Province, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, 1# South Maoyuan Street, Nanchong, 637001, Sichuan, China.
Background And Aims: Previous studies have confirmed that alcohol can increase the sensitivity of the pancreas to stressors and exacerbate the severity of pancreatitis when excessive alcohol intake is combined with other causes. In the current work, this study attempted to explore how does alcohol regulate cerulein-induced acute pancreatitis, especially before inflammation occurs.
Methods: Proteomics was performed to analyze the differentially expressed proteins in pancreatic tissues from a rat model of pancreatitis.
Want 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!