Yazar "Tanriverdi, E. S." seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim Yok
    Öğe
    The effect of Nateglinide and Octreotide on follicular morphology and free radical scavenging system in letrazole-induced rat model of PCOS
    (Verduci Publisher, 2022) Kirici, P.; Kaplan, S.; Annac, E.; Tanriverdi, E. S.; Cagiran, F. T.; Kali, Z.; Mavral, N.
    OBJECTIVE: To investigate the ef-fects of octreotide and nateglinide on ovarian folli-cle count, ovarian tissue damage, biochemical pa-rameters and free radical scavenging system in le-trazole-induced rat model of PCOS. MATERIALS AND METHODS: Forty-two female Sprague-Dawley rats were divided into six groups. Group 1 (Control Group): after localizing the ova-ries and the uterine horns, the abdominal wall was closed without any surgical procedure. Group 2 (PCOS Group): PCOS was induced by administrat-ing Letrozole orally for 21 successive days. At the end of 21 days, rats underwent ovarian biopsies. The experimental PCOS model was considered successful in the presence of atretic follicles with-out granulosa cell stratification. Group 3 (PCOS + Nateglinide Group): Nateglinide was administered by oral dropper for 30 days to the rats in which PCOS model was created. Group 4 (Nateglinid only Group): 30 days of NG was applied to the rats with-out PCOS. Group 5 (PCOS+Octreotide Group): 0.1 mg/kg/day Octreotide was given intraperitoneally for 4 weeks to the rats in which PCOS model was created. Group 6 (Octreotide only Group): animals without PCOS were given 0.1 mg/kg/day Octreotide. Bilateral oophorectomy was performed and blood samples were collected from all groups at the end of the treatment. Ovarian tissue was stained immu-nohistochemically with TLR-4 in addition to con-ventional staining. In addition to follicle classifica-tion, ovarian damage was graded. Serum insulin, FSH and LH, TNF-alpha, IL-6, SHBG, SOD, IGF-1, MDA and GSH levels were also measured. RESULTS: The cystic and degenerated follicle density of PCOS group was high compared with the other groups. Both cystic and degenerated fol- licles were significantly reduced in PCOS+NG and PCOS+OC groups compared to PCOS group. There was no difference between the groups in terms of serum LH, FSH and insulin levels (p > 0.05). Serum testosterone level was significantly higher in the PCOS group compared to the other groups (p < 0.01). Adding OC or NG to PCOS groups did not cause significant changes in testosterone levels. TNF-alpha and IL-6 levels were high in PCOS group (p < 0.03). IGF-1 and MDA levels were higher in PCOS than in other groups (p < 0.03, p < 0.01 respectively). Adding OC or NG to the treatment normalized IGF-1 and MDA levels. Serum GSH levels were significantly lower in the PCOS group (p < 0.05). Adding NG to the treatment increased GSH levels. CONCLUSIONS: Both NG and OCT reverses atretic and degenerate follicle damage due to PCOS through TLR-4, antioxidant and anti-inflammatory pathways.
  • Küçük Resim Yok
    Öğe
    Investigation of Antimicrobial Activities and Molecular Docking Studies of Synthesized Sulfonamide Compounds
    (Springer, 2023) Ozbey, G.; Tanriverdi, E. S.; Senkal, B. F.; Korkmaz, B.; Erkan, S.; Bulut, N.; Zigo, F.
    Sulfonamides are commonly used worldwide. In this study, several sulfonamide compounds such as N-(4-acetylphenyl)-4-methylbenzenesulfonamide (PSASF), N-(3-acetylphenyl)-4-methylbenzenesulfonamide (PSASF-1), 1-tosyl-1H-imidazole (PSASF-x), 4-methyl-N-(pyridin-4-yl) benzenesulfonamide (PSASF-2), and 1-ethyl-4-tosylpiperazine (PSASF-3) have been synthesized, with antibacterial activities against Escherichia coli ATCC 25922, Pseudomonas aeruginosa ATCC 27853, and Staphylococcus aureus ATCC 29213 have been evaluated. Antibacterial properties of drugs were studied in depth using molecular docking research. In addition, the synthesized compounds were characterized using spectral analysis. Antibacterial activities of synthesized derivates were determined against E. coli, P. aeruginosa, and S. aureus with minimum inhibitory concentration (MIC) by using the broth microdilution method. All prepared compounds exhibited significant antibacterial activity against S. aureus, E. coli, and P. aeruginosa. The MIC value for E. coli and P. aeruginosa was determined as 256 mu g/mL. MIC against S. aureus was observed to be 256 and 512 mu g/mL for the PSASF compound and the other compounds respectively. Results of the current study revealed that four of the five compounds had weaker antibacterial activity against S. aureus at a concentration of 512 mu g/mL. However, the MIC values from our experiments are significantly higher in comparison with the reference drugs such as amoxicillin, ciprofloxacin, meropenem, and vancomycin in E. coli and S. aureus. On the other hand, in a comparison of the synthesized compounds with reference drugs in P. aeruginosa, no statistical difference was demonstrated. Antibacterial activity of the produced derivates was likewise an agreement with regard to the molecular docking and the laboratory results.