The general structure and results of quantitative studies of rat carotid body type I cells are described. In contrast to previous reports, there was no change in mitochondrial V/v% on stimulating the carotid body with 10% oxygen. The volume of cytoplasm occupied by electron-dense cored vesicles was significantly increased, whilst their density per square micrometre of cytoplasm was decreased during hypoxia. Thus, the size of vesicles is increased by hypoxic stimulation. On the basis of vesicle diameter and density we were unable to find evidence of more than one variety of type I cell.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000146213 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Circulating MicroRNAs Related to Arterial Stiffness in Adults with HIV Infection.
Viruses
December 2024
1st Internal Medicine Department, AHEPA University Hospital, School of Medicine, Aristotle University of Thessaloniki, 55436 Thessaloniki, Greece.
People with HIV (PWH) have an elevated risk of cardiovascular disease compared to those without HIV. This study aimed to investigate the relative serum expression of microRNAs (miRNAs) associated with arterial stiffness, a significant marker of cardiovascular disease. A total of 36 male PWH and 36 people without HIV, matched for age, body mass index, pack years, and dyslipidemia, were included in the study.
View Article and Find Full Text PDFEffects of Hydrogen Sulfide at Normal Body Temperature and in the Cold on Isolated Tail and Carotid Arteries from Rats and TRPA1 Knockout and Wild-Type Mice.
Biomedicines
December 2024
Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pecs, 7624 Pecs, Hungary.
Hydrogen sulfide (HS) is a gasotransmitter that modulates vascular tone, causing either vasodilation or vasoconstriction depending on the vascular bed, species, and experimental conditions. The cold-sensitive transient receptor potential ankyrin-1 (TRPA1) channel mediates HS-induced effects; however, its contribution to the vasomotor responses of different arteries at different temperatures has remained unclear. Here, we aimed to fill this gap by comparing the effects of sodium sulfide (NaS), which is a fast-releasing HS donor, on the isolated carotid and tail skin arteries of rats and mice at cold and normal body temperature with wire myography.
View Article and Find Full Text PDFSuccessful Surgical Management of Intracranial Carotid Artery Trauma Following Penetrating Facial Injury: A Case Report.
Am J Case Rep
January 2025
Department of Otolaryngology, Sanford Medical Center Fargo, Fargo, ND, USA.
BACKGROUND Carotid artery injury has an incidence of 0.2% in the National Trauma Data Bank. The true incidence of intracranial carotid injury is unknown but can be estimated at less than one in 1000 trauma-related inpatient admissions in America.
View Article and Find Full Text PDFCarotid Body Tumor: Incidental Discovery and Diagnosis.
Cureus
December 2024
Internal Medicine, Texas Tech University Health Sciences Center, El Paso, USA.
Carotid body tumors (CBTs), rare neuroendocrine neoplasms near the carotid bifurcation, are mostly asymptomatic but may cause discomfort and autonomic dysfunction. Computed tomography angiography (CTA) is used for diagnosis, eliminating the need for a biopsy to avoid the risk of hemorrhage. Surgical excision is the preferred treatment, while radiotherapy is an option when surgery is impractical.
View Article and Find Full Text PDFFirst Bite Syndrome: A Rare Post-Surgical Complication Following a Carotid Body Tumor Excision.
Cureus
January 2025
Clinical Pharmacy and Neurology, King Saud Medical City, Riyadh, SAU.
First bite syndrome (FBS) is characterized by intense pain in the parotid area that starts with the first bite of food spontaneously. FBS is an uncommonly observed surgical complication of head and neck surgery. A 36-year-old male patient reported extreme pain after surgical excision of a carotid body tumor (CBT) in the ipsilateral parotid gland region at the first bite of each food intake, which improves gradually with continued mastication.
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!