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    Carvacrol showed a curative effect on reproductive toxicity caused by Bisphenol AF via antioxidant, anti-inflammatory and anti-apoptotic properties
    (Pergamon-Elsevier Science Ltd, 2023) Uyar, Ahmet; Cellat, Mustafa; Kanat, Ozgur; Etyemez, Muhammed; Kutlu, Tuncer; Deveci, Mehmet Yilmaz Zeki; Yavas, Ilker
    Bisphenol AF (BPAF) is an endocrine disruptor, and human exposure to these chemicals is growing in industrialized nations. BPAF has been demonstrated in studies to have toxic effects on reproductive health. This study examined the effects of oral exposure to BPAF on the reproductive system and the protective effects of carvacrol in rats. From 32 Wistar albino rats, four separate groups were set up for this purpose. Carvacrol 75 mg/kg and BPAF 200 mg/kg were administered by oral gavage method. Rat sperm parameters and serum testosterone levels were measured after 28 days of administration. The study looked at the MDA in the testis tissues, as well as CAT, GPx, and GSH as antioxidants parameters, NF-& kappa;B and TNF-& alpha; as inflammatory markers, caspase-3 and Bcl-2 as apoptosis parameters, and PCNA as cell proliferation markers. In addition, testis tissues underwent histological evaluation. As a result, in rats exposed to only BPAF, sperm counts declined, testosterone levels reduced, oxidative stress, inflammation, and apoptosis increased, and cell proliferation decreased. Furthermore, severe disruptions in tissue architecture and decreased spermatogenesis were reported. In contrast, sperm parameters improved, testosterone levels increased, oxidative stress and inflammation decreased, and apoptosis was prevented in the carvacrol-treated group compared to the BPAF-only group. It was also found that spermatogenesis was maintained, and structural abnormalities in testicular tissue were mostly avoided with an increase in PCNA expression. According to the findings, despite BPAF-induced testicular and reproductive toxicity, carvacrol had therapeutic potential due to its anti-inflammatory, antioxidant, cell proliferation-increasing, and anti-apoptotic activities.
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    Safranal's therapeutic effects in rat models of polycystic ovary syndrome
    (Springernature, 2023) Cellat, Mustafa; Kuzu, Muslum; Guvenc, Mehmet; Yuksel, Murat; Kanat, Ozgur; Bozkurt, Yesim Akaydin; Etyemez, Muhammed
    Polycystic ovary syndrome is one of the leading causes of female infertility in reproductive age. In this work, the protective effects of safranal against letrozole-induced polycystic ovary syndrome in rats were examined. For this purpose, 32 Wistar albino female rats were split into four groups. Each group received the following treatments for 21 days: Group 1 received carboxymethylcellulose (1%, 2 ml/kg); Group 2, letrozole (1 mg/kg), Group 3, safranal (200 mg/kg); and Group 4 letrozole and safranal via oral gavage. We identified estrus cycles in the rats and analyzed various parameters in their serum and ovarian tissues, as well as histopathologic findings. The parameters studied included C-reactive protein, glucose, total cholesterol, triacylglyceride, high-density lipoprotein, low-density lipoprotein, follicle-stimulating hormone, estradiol, and luteinizing hormone levels in serum. Additionally, the study measured malondialdehyde, glutathione, glutathione peroxidase, and catalase levels in ovarian tissue. We also examined tumor necrosis factor-alpha, interleukin-6, and interleukin-1beta parameters in serum and ovarian tissues, as well as nuclear factor erythroid 2-related factor-2 and heme oxygenase-1 protein levels. In the letrozole group, the estrus cycle was disrupted, and all parameters, except for glutathione and glutathione peroxidase, showed impairments compared to the control group. The findings showed that glucose, triacylglyceride, catalase, and heme oxygenase-1 levels slightly improved after safranal treatment, however, other parameters showed statistically significant improvements. Furthermore, safranal treatment reduced the development of cystic follicles while preserving tissue architecture, as revealed by histopathologic findings. Based on the results obtained, it may be argued that safranal's antioxidant and anti-inflammatory properties, along with its ability to regulate sex hormone levels and manage dyslipidemia, make it a promising solution for patients with polycystic ovary syndrome.