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Exposure to High-molecular-weight Polyvinyl Chloride Alters Bacterial Diversity in the Gut Microbiota of the Wistar Rat

Pekmezekmek Ayper Boga, Emre Mustafa, Tunc Erdal, Kalay Betül, Kocahan Sayad, Emre Nesrin, Emre Toygar

Rocznik Ochrona Środowiska

2024

Tom 26

393--402

The physical and chemical characteristics of microplastics make it easier for contaminants to adhere to the surface of the particles, acting as a vehicle for toxins to reach organisms after ingestion. The "most microbiome" comprises all the microorganisms present in our bodies as a whole because it has a big surface area and provides nutrientrich components for the digestive system's germs. In this investigation, metagenome analysis was used to determine the impact of long-term administration of High-Molecular Weight-Polyvinyl Chloride microplastics to young Wistar rats on the gut microbiota. Forty adult rats in total were employed, with 15 first-group and 15 second-group experimental groups and 10 controls. Pellets made specifically for feeding rats are produced. Following the procedure, the rats were anaesthetised with ketamine and xylasine before being dissected. Due to the small number of samples, alpha diversity in the gut metagenome study did not demonstrate statistically significant variations, but it did illustrate differences in bacterial diversity and density. In particular, it has been discovered that bacterial diversity is higher in experimental groups. According to the control groups, in the assay groups, the intestinal microbiome, dominated by Escherichia coli, Shigella, and Lactobacillus, was assessed as an increase in metabolic pathways related to microplastic exposure and pathogenicity in general. The findings demonstrate the necessity for extreme caution in the manufacture and use of plastics that pose a risk to the welfare of living things.

Ameloriate Effect of Glucose Monohydrate on Nicotine Sulfate-induced Toxicity and Teratogenicity in Xenopus embryos: an Experimental Study

Pekmezekmek Ayper Boga, Emre Mustafa, Tunç Erdal, Sertdemir Yasar

Rocznik Ochrona Środowiska

2023

Tom 25

265--273

It is well documented that nicotine causes low birth weight, preterm birth, pregnancy difficulties, lower fertility, inhibition of spermatogenesis, and decreased steroidogenesis and potassium channels conductance of Xenopus oocytes. Lung cancer is the most well-known adverse impact of nicotine. This work used a 96-hour FETAX test to examine how concurrent administration of glucose monohydrate modifies the effects of exposure to nicotine, nicotine sulfate, and/or glucose on ion channels and membrane potential in Xenopus leavis embryos at an early stage of development. In-vitro fertilised embryos were treated with nicotine and glucose alone or in combination for this aim, and the effects of those treatments were then assessed for potential teratogenic effects. At the conclusion of the FETAX technique, the ratios of healthy, abnormal, and dead embryos were calculated, and the length of embryos in each treatment group was assessed. The ratios of abnormal and dead embryos were considerably higher with nicotine treatment alone compared to controls. Compared to the results of the nicotine-alone treatment group, the ratio of aberrant embryos was marginally reduced by concurrent glucose and nicotine therapy. In contrast, the ratio of normal embryos was raised. Additionally, treatments with glucose, nicotine, and Nic+Glu significantly altered the resting membrane potentials of fertilised oocytes (p < 0.001). Our findings indicated that the simultaneous treatment groups that also received glucose had a protective impact on embryos. Such structured, more sophisticated research is required to confirm these findings.