Relationship between the density of degenerated neurons in the carotid body and changes in blood pH.

IF 1.2 4区 医学 Q2 MEDICINE, GENERAL & INTERNAL
Turkish Journal of Medical Sciences Pub Date : 2024-12-12 eCollection Date: 2025-01-01 DOI:10.55730/1300-0144.5961
Hakan Kina, Aydın Sinan Apaydin
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引用次数: 0

Abstract

Background and aim: The carotid artery is the main artery supplying blood to the brain. Carotid bodies (CB), located at the bifurcation of the carotid artery, regulate blood pH. This study aimed to assess the changes in CB-related pH levels following degeneration induced by ligation of both common carotid arteries (CCA).

Materials and methods: We included 23 adult male New Zealand rabbits in the study. The animals were divided into three groups: a control group (n = 5), a sham group (saline injection, n = 5), and a study group subjected to bilateral CCA ligation (n = 13). pH levels and cardiac rhythms were monitored before, during, and after the procedure at two-day intervals over three weeks. Additionally, we quantified both healthy and degenerated neuron densities in the CB.

Results: Initial pH levels were as follows: control group (7.42 ± 0.039), sham (7.39 ± 0.059), and study group (7.35 ± 0 .12). Prior to euthanasia, pH levels were the following: control (7.40 ± 0.029), sham (7.42 ± 0.041), and study (7.39 ± 0.12). The density of degenerated neurons in the CB was as follows: control (11 ± 4/mm3), sham (394 ± 74/mm3), and study (1363 ± 347/mm3). Statistical analysis showed the following significant differences: control vs. sham (p < 0.001), sham vs. study (p < 0.0005), and control vs. study (p < 0.000001).

Conclusions: Increased degenerated neuron density in CB leads to reduced blood pH following CCA ligation due to acute ischemia of CB. Timely pH normalization occurs as vertebrobasilar reverse blood flow supplies CB, reversing neurodegeneration and normalizing pH.

颈动脉体中退化神经元的密度与血液 pH 值变化之间的关系。
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来源期刊
Turkish Journal of Medical Sciences
Turkish Journal of Medical Sciences 医学-医学:内科
CiteScore
4.60
自引率
4.30%
发文量
143
审稿时长
3-8 weeks
期刊介绍: Turkish Journal of Medical sciences is a peer-reviewed comprehensive resource that provides critical up-to-date information on the broad spectrum of general medical sciences. The Journal intended to publish original medical scientific papers regarding the priority based on the prominence, significance, and timeliness of the findings. However since the audience of the Journal is not limited to any subspeciality in a wide variety of medical disciplines, the papers focusing on the technical  details of a given medical  subspeciality may not be evaluated for publication.
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