Ondansetron and AS19 attenuate morphine tolerance by modulating serotonin 5-HT3 and 5-HT7 receptor expressions in rat dorsal root ganglia     
Yazarlar (5)
Doç. Dr. Şeyma ÖZSOY Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Ercan Özdemir
Sivas Cumhuriyet Üniversitesi, Türkiye
Handan Güneş
Türkiye
Prof. Dr. Fikret GEVREK Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Kader Gülmez
Makale Türü Açık Erişim Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Journal of Radiation Research and Applied Sciences
Dergi ISSN 1687-8507 Wos Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili Türkçe
Basım Tarihi 12-2023
Cilt No 16
Sayı 100682
DOI Numarası 10.1016/j.jrras.2023.100682
Makale Linki http://dx.doi.org/10.1016/j.jrras.2023.100682
Özet
Opioid drugs are frequently preferred drugs for severe pain, but their long-term use causes tolerance to their analgesic effects. However, the factors that contribute to the development of tolerance to opioids are diverse and not fully understood. In this study, our aim was to investigate the effects of 5-HT 3 receptor antagonist ondansetron (ODN) and 5-HT 7 receptor agonist AS19 on morphine analgesia and tolerance in rats. Randomly selected Wistar Albino (230-260 g) 90 male rats were included in the study. To develop morphine tolerance, high-dose (50 mg/kg) of morphine was administered subcutaneously daily for three days, and tolerance was evaluated at 30-min intervals for 120 min by thermal analgesia tests on the 4th day. After thermal analgesia measurements, dorsal root ganglia (DRGs) at spinal L 4-S 5 level were isolated. 5-HT 3 and 5-HT 7 receptor protein expressions in DRGs were measured by immunohistochemical method. Study results show that co-administration of ODN or AS19 with morphine indicated a significant increase in analgesic effect compared to morphine alone. In addition, a significant reduction in morphine tolerance was observed when ODN or AS19 was administered with morphine. H-score analysis significantly increased 5-HT 3 receptor expressions in the morphine-tolerant rats, and administration of ODN prevented this. Similarly, 5-HT 7 receptor expression was significantly decreased in the morphine tolerant group, and the administration of AS19 increased this expression. In conclusion, these study results suggest that both ODN and AS19 alter the 5-HT 3 and 5-HT 7 receptor expressions in the DRG and …
Anahtar Kelimeler
5-HT receptors | Ondansetron | AS19 | Dorsal root ganglia | Morphine tolerance