Modulatory effect of resveratrol and melatonin on natural killer cell activity and adrenomedullin in diabetic rats
Turkish Journal of Medical Sciences, cilt.52, sa.1, ss.258-267, 2022 (SCI-Expanded, Scopus, TRDizin)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 52 Sayı: 1
- Basım Tarihi: 2022
- Doi Numarası: 10.3906/sag-2104-380
- Dergi Adı: Turkish Journal of Medical Sciences
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, CAB Abstracts, EMBASE, MEDLINE, Veterinary Science Database, TR DİZİN (ULAKBİM)
- Sayfa Sayıları: ss.258-267
- Anahtar Kelimeler: Diabetes mellitus, melatonin, resveratrol, natural killer cell activity, mid-regional proadrenomedullin
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
Background/aim: Epidemiological evidence suggests that diabetes poses a high risk for many chronic diseases, especially cardiovascular diseases, and cancer by stimulating many inflammatory and immunological pathogenic mediators and affecting natural killer (NK)-cell activity. In this study, the effects of melatonin and resveratrol on IL-6, TNF-alpha, oxidant/antioxidant capacity, NK-cell activity, and mid-regional proadrenomedullin (MR-proADM) levels of diabetic rats were investigated. Materials and methods: In the study, 28 Sprague Dawley rats were randomly divided into the control group (group I) and 3 streptozotocin-induced diabetes mellitus (DM) groups (group II, III, and IV), each group consisting of 7 rats. Five mg/kg/day melatonin to group III and 5 mg/kg/day resveratrol (intraperitoneal) to group IV was given. At the end of 3 weeks, NK-cell activity, total antioxidant/oxidant capacity, MR-proADM, IL-6, and TNF-alpha levels were measured in intracardiac blood taken under anesthesia. Results: NK-cell activity of group II was found lower than group I, group III, and group IV (7.4 ± 2.0 vs. 22.5 ± 11.9, 30.6 ± 22.5 and 20.4 ± 9.1 pg/mL; p = 0.0018, respectively). The difference was more prominent in diabetic rats receiving melatonin (p < 0.01). TNF-alpha levels of group II were higher than the group I (p < 0.05). The MR-proADM levels of group II were found to be lower than the group I and group III (6.4 ± 3.6 vs. 14.4 ± 3.2 and 14.0 ± 4.2 ng/L; p < 0.05, respectively). In addition, NK-cell activity was moderately correlated with MR-proADM (r = 0.5618, p = 0.0019). Conclusion: Resveratrol and, more effectively, melatonin modulate by reversing the adverse effects of diabetes on NK-cell activity, which has a protective function in inflammatory and immunological processes. In this modulation, melatonin also acts through adrenomedullin.