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Authors = Ismail Yıldırım

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13 pages, 810 KiB  
Article
Reproductive Effects of S. boulardii on Sub-Chronic Acetamiprid and Imidacloprid Toxicity in Male Rats
by Çiğdem Sevim, Erol Akpınar, Emrah Hicazi Aksu, Ali Doğan Ömür, Serkan Yıldırım, Mehtap Kara, İsmail Bolat, Aristides Tsatsakis, Robin Mesnage, Kirill S. Golokhvast, Sevgi Karabulut Uzunçakmak and Rabia Nilüfer Ersoylu
Toxics 2023, 11(2), 170; https://doi.org/10.3390/toxics11020170 - 12 Feb 2023
Cited by 12 | Viewed by 3422
Abstract
The potential health-promoting effects of probiotics against intoxication by pesticides is a topic of increasing commercial interest with limited scientific evidence. In this study, we aimed to investigate the positive effects of probiotic Saccharomyces boulardii on the male reproductive system under low dose [...] Read more.
The potential health-promoting effects of probiotics against intoxication by pesticides is a topic of increasing commercial interest with limited scientific evidence. In this study, we aimed to investigate the positive effects of probiotic Saccharomyces boulardii on the male reproductive system under low dose neonicotinoid pesticide exposure conditions. We observed that acetamiprid and imidacloprid caused a degeneration and necrosis of the spermatocytes in the tubular wall, a severe edema of the intertubular region and a hyperemia. This was concomittant to increased levels of 8-hydroxy-2′-deoxyguanosine reflecting oxidative stress, and an increase in caspase 3 expression, reflecting apoptosis. According to our results, Saccharomyces boulardii supplementation mitigates these toxic effects. Further in vivo and clinical studies are needed to clarify the molecular mechanisms of protection. Altogether, our study reinforces the burden of evidence from emerging studies linking the composition of the gut microbiome to the function of the reproductive system. Full article
(This article belongs to the Special Issue Environmental Exposure and Reproductive Health)
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13 pages, 317 KiB  
Article
Experimental and Theoretical Studies on the Functionalization Reactions of 4-Benzoyl-1,5-Diphenyl-1H-Pyrazole-3-Carboxylic Acid and Acid Chloride with 2,3-Diaminopyridine
by Ismail Yıldırım, Fatma Kandemirli and Elif Demir
Molecules 2005, 10(3), 559-571; https://doi.org/10.3390/10030559 - 31 Mar 2005
Cited by 18 | Viewed by 9485
Abstract
The 1H-pyrazole-3-carboxylic acid 2 was converted in good yield (69%) into the corresponding 1H-pyrazole-3-carboxamide 5 via reaction of the acid chloride 3 with 2,3- diaminopyridine (4). A different product, the 3H-imidazo[4,5-b] pyridine derivative 6, was formed from the reaction of 3 with 4 [...] Read more.
The 1H-pyrazole-3-carboxylic acid 2 was converted in good yield (69%) into the corresponding 1H-pyrazole-3-carboxamide 5 via reaction of the acid chloride 3 with 2,3- diaminopyridine (4). A different product, the 3H-imidazo[4,5-b] pyridine derivative 6, was formed from the reaction of 3 with 4 and base in benzene for 5 hours. The structures of the synthesized compounds were determined spectroscopically. The mechanism of the reaction between 3 and 4 was examined theoretically. Full article
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