The effect of chemically induced colitis, psychological stress and their combination on visceral pain in female Wistar rats

التفاصيل البيبلوغرافية
العنوان: The effect of chemically induced colitis, psychological stress and their combination on visceral pain in female Wistar rats
المؤلفون: Joris G. De Man, Paul A. Pelckmans, Wim Vermeulen, Benedicte Y. De Winter, Annemie Deiteren, Tom G. Moreels
المصدر: Stress: the international journal on the biology of stress
سنة النشر: 2014
مصطلحات موضوعية: medicine.medical_specialty, Abdominal pain, Physiology, Inflammation, medicine.disease_cause, Behavioral Neuroscience, Internal medicine, Animals, Medicine, Psychological stress, Psychology, Rats, Wistar, Colitis, Biology, Endocrine and Autonomic Systems, business.industry, Visceral pain, Visceral Pain, medicine.disease, Chemically-induced colitis, Pathophysiology, Rats, Psychiatry and Mental health, Neuropsychology and Physiological Psychology, Endocrinology, Trinitrobenzenesulfonic Acid, Hyperalgesia, Immunology, Female, Human medicine, medicine.symptom, business, Colorectal distension, Stress, Psychological
الوصف: Visceral sensitivity is of pathophysiological importance in abdominal pain disorders and can be modulated by inflammation and stress. However, it is unclear whether inflammation and stress alter visceral perception independently of each other or in conjunction through neuroendocrine interactions. Therefore, we compared the short- and long-term effects of experimental colitis and water avoidance stress (WAS), alone or in combination, on visceral sensitivity in female Wistar rats. Colitis was induced by trinitrobenzene sulfonic acid (TNBS) and colonoscopically confirmed. During WAS, rats were placed on a platform surrounded by water for 1 h. Visceral sensitivity was assessed by quantifying the visceromotor responses (VMRs) to colorectal distension. Activation of the hypothalamic-pituitary-adrenal axis was determined by measuring serum corticosterone in a separate protocol. TNBS instillation resulted in overt colitis, associated with significant visceral hypersensitivity during the acute inflammatory phase (3 days post-TNBS; n = 8/group); after colitis had subsided (28 days post-TNBS), hypersensitivity was resolved (n = 4-8/group). Single WAS was associated with increased VMRs of a magnitude comparable to acute TNBS-induced hypersensitivity (n = 8/group). However, after repetitive WAS no significant hypersensitivity was present (n = 8/group). No additive effect of colitis and stress was seen on visceral pain perception (n = 6-8/group). Corticosterone levels were only increased in acute TNBS-colitis, acute WAS and their combination. To conclude, both colitis and stress successfully induced short-term visceral hypersensitivity and activated the hypothalamic-pituitary-adrenal axis, but long-term effects were absent. In addition, our current findings do not support an additive effect of colitis and stress on visceral sensitivity in female Wistar rats.
اللغة: English
تدمد: 1025-3890
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6c6d2b66f6a440b13748fa65e5ccb0c
https://hdl.handle.net/10067/1192970151162165141
Rights: OPEN
رقم الانضمام: edsair.doi.dedup.....e6c6d2b66f6a440b13748fa65e5ccb0c
قاعدة البيانات: OpenAIRE