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Bruxism affects stress responses in stressed rats
Chikatoshi Sato1, Sadao Sato, Hirofumi Takashina
1Department of Craniofacial Growth and Development Dentistry, Research Institute of Occlusion Medicine, Research Center of Brain and Oral Science, Kanagawa Dental College, Yokosuka, Kanagawa, Japan. satochi@kdcnet.ac.jp
Clinical Oral Investigations
|June 3, 2009
Summary
Stress-induced bruxism activity (SBA) mitigates stress effects, reducing gastric ulcers and protecting organs. This aggression expression during stress also lowers autonomic nervous system responses.
Area of Science:
- Physiology
- Neuroscience
- Immunology
Background:
- Stress responses involve the autonomic nervous system (ANS).
- Emotional suppression may activate both sympathetic and parasympathetic ANS divisions.
- Emotional expression might protect against stress-induced ulcers (ulcerogenesis).
Purpose of the Study:
- To investigate if stress-induced bruxism activity (SBA) affects stress responses.
- To examine SBA's impact on gastric changes, thymus, spleen, blood leukocytes, cortisol, and adrenaline.
Main Methods:
- Induction of stress and measurement of physiological responses.
- Assessment of gastric ulcer formation.
- Analysis of thymus and spleen tissue.
- Quantification of blood leukocytes, cortisol, and adrenaline levels.
Main Results:
- SBA attenuated stress-induced gastric ulcer genesis.
- SBA reduced degenerative changes in the thymus and spleen.
- SBA mitigated increases in blood adrenaline, cortisol, and neutrophils.
Conclusions:
- Expression of aggression via SBA during stress exposure offers protection.
- SBA attenuates stress-induced autonomic nervous system responses.
- SBA effectively reduces gastric ulcer formation during stress.
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