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Published on: August 18, 2014
[Effects of ischemia on olfactory bulb in rats]
Xiaojun Zhan1, Yongxiang Wei, Xutao Miao
1Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital Affiliated to Capital University of Medical Sciences,Beijing, 100730, China.
Summary
Ischemic injury to the olfactory bulb in rats caused vascular changes and cell damage, potentially explaining olfactory disorders. This study highlights the impact of ischemia on neural structures.
Area of Science:
- Neuroscience
- Pathology
- Vascular Biology
Context:
- Olfactory disorders are a common clinical problem.
- The olfactory bulb is crucial for the sense of smell.
- Ischemic injury can affect various brain regions.
Purpose:
- To investigate morphological changes in the rat olfactory bulb following ischemic injury.
- To explore the role of vascular factors in the development of olfactory dysfunction.
- To correlate histological findings with the severity and duration of ischemia.
Summary:
- Permanent bilateral carotid artery occlusion was performed on Sprague-Dawley rats.
- Olfactory bulbs were examined at 1 week, 4 weeks, and 2 months post-injury using light and transmission electron microscopy.
- Results showed altered vascular patterns, decreased cell numbers, mitochondrial damage in mitral cells, microvascular abnormalities, and nerve fiber degeneration.
Impact:
- Ischemic injury significantly alters olfactory bulb morphology.
- Damage to neurons and nerve fibers in the olfactory bulb may underlie olfactory disorders.
- Findings suggest vascular factors play a critical role in ischemia-induced olfactory dysfunction.
