{"title":"Relationship between the density of degenerated neurons in the carotid body and changes in blood pH.","authors":"Hakan Kina, Aydın Sinan Apaydin","doi":"10.55730/1300-0144.5961","DOIUrl":null,"url":null,"abstract":"<p><strong>Background and aim: </strong>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).</p><p><strong>Materials and methods: </strong>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.</p><p><strong>Results: </strong>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/mm<sup>3</sup>), sham (394 ± 74/mm<sup>3</sup>), and study (1363 ± 347/mm<sup>3</sup>). 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).</p><p><strong>Conclusions: </strong>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.</p>","PeriodicalId":23361,"journal":{"name":"Turkish Journal of Medical Sciences","volume":"55 1","pages":"223-230"},"PeriodicalIF":1.2000,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11913504/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Turkish Journal of Medical Sciences","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.55730/1300-0144.5961","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"MEDICINE, GENERAL & INTERNAL","Score":null,"Total":0}
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.
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.