Efek pemberian α-tokoferol terhadap jumlah sel spermatogenik dan sel Leydig pada tikus putih (Rattus norvegicus) yang dipapar 2,3,7,8 Tetrachlorodibenzo-p-dioxin

This research aimed to determine the effect of α-tocopherol on the count of spermatogenic and Leydig cells in rats (Rattus norvegicus) exposed to 2,3,7,8 tetrachlorodibenzo-p-dioxin (dioxin). Dioxin is an endocrine-disrupting agent that adversely affects reproductive health, while α-tocopherol maintains fertility. This research used 25 rats aged 10-12 weeks weighing 150-200 grams. Rats were divided into five groups (K, P0, P1, P2 and P3). The K (control group) was administered with corn oil 1 ml/day. P0 was exposed to 700 ng/kg/day dioxin. P1, P2 and P3 was exposed to dioxin at a dose of 700 ng/kg/day and administered with α-tocopherol at a dose of 77, 140 and 259 mg/kg/day respectively. Dioxin exposure, corn oil and α-tocopherol administration were conducted orally for 20 days. On day-21, all rats were sacrificed for histological slides preparation of testicles with hematoxylin-eosin staining. Data were analyzed with analysis of variance and continued with the Duncan test. The results indicated that exposure to dioxin caused a decrease in the number of spermatogenic and Leydig cells. The administration of α-tocopherol at a dose of 140 mg/kg/day eliminated the effect of reducing the number of spermatogenic and Leydig cells caused by exposure to dioxin. The conclusion was the administration of α-tocopherol at 140 mg/kg/day was effective in maintaining the number of spermatogenic and Leydig cells in rats (Rattus norvegicus) exposed to 2,3,7,8 tetrachlorodibenzo-p-dioxin.

Animal Toxicology Studies on the Male Reproductive Effects of 2,3,7,8-Tetrachlorodibenzo-p-Dioxin: Data Analysis and Health Effects Evaluation

2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a well-known environmental poison that exist in the environment for many years. However, its effect on the male reproductive system has not been clearly stated. We conducted a meta-analysis of the effect of TCDD on the male reproductive system of rodents about TCDD. Results showed that that TCDD exposure reduced the testis weight (weighted mean difference [WMD]: −0.035, 95% confidence interval [CI]: −0.046 to −0.025), sperm count (WMD: −35, 95% CI: −42.980 to −27.019), and blood testosterone concentration (WMD: −0.171, 95% CI: −0.269 to −0.073). According to our research results, TCDD can cause damage to the male reproductive system of rodents through direct or indirect exposure. In order to further explore the potential hazards of TCDD to humans, more human-related research needs to be carried out.

Teratogenic of 2,3,7,8-Tetrachlorodibenzo-P-Dioxin (TCDD) on Eye Diameters and Body Weight in Chicken Embryo

2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is a chemical compound resulting from the burning effect that is very dangerous for humans, plants, or animals which can cause skin damage, immunotoxic, hepatotoxic, carcinogenic, teratogenic, effects on reproduction, growth processes, neurobehavioral, and endocrine effects that are specific In addition, this compound can also reduce embryo weight and increase embryo mortality. This study aimed to determine the teratogenic of TCDD administration on eye diameters and body weight of chicken embryo. In this study there were 2 treatment groups, i.e: 1) P1 as a normal group without the addition of TCDD, and 2) P2 as a group with the addition of TCDD of 5 ng / egg with dissolved in 5 µL corn oil. The treatment was carried out for 7 days. The measurement data of eye diameters and body weight of chicken embryo were analyzed by the unpaired sample T test. The analysis showed that the teratogenic of TCDD had a significant effect on eye diameters and body weight of chicken embryos, where the teratogenic of TCDD caused a decrease in eye diameters and body weight loss in chicken embryos.

Effects of Acute 2,3,7,8-Tetrachlorodibenzo-p-Dioxin Exposure on the Circulating and Cecal Metabolome Profile

2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is a polyhalogenated planar hydrocarbon belonging to a group of highly toxic and persistent environmental contaminants known as “dioxins”. TCDD is an animal teratogen and carcinogen that is well characterized for causing immunosuppression through activation of aryl hydrocarbon receptor (AHR). In this study, we investigated the effect of exposure of mice to an acute dose of TCDD on the metabolic profile within the serum and cecal contents to better define the effects of TCDD on host physiology. Our findings demonstrated that within the circulating metabolome following acute TCDD exposure, there was significant dysregulation in the metabolism of bioactive lipids, amino acids, and carbohydrates when compared with the vehicle (VEH)-treated mice. These widespread changes in metabolite abundance were identified to regulate host immunity via modulating nuclear factor-kappa B (NF-κB) and extracellular signal-regulated protein kinase (ERK1/2) activity and work as biomarkers for a variety of organ injuries and dysfunctions that follow TCDD exposure. Within the cecal content of mice exposed to TCDD, we were able to detect changes in inflammatory markers that regulate NF-κB, markers of injury-related inflammation, and changes in lysine degradation, nicotinamide metabolism, and butanoate metabolism, which collectively suggested an immediate suppression of broad-scale metabolic processes in the gastrointestinal tract. Collectively, these results demonstrate that acute TCDD exposure results in immediate irregularities in the circulating and intestinal metabolome, which likely contribute to TCDD toxicity and can be used as biomarkers for the early detection of individual exposure.

Effect Of Alpha-Tocopherol On Spermatozoa Death Of Apoptosis and Necrosis in Rats (Rattus Norvegicus) Exposed 2,3,7,8- Tetrachlorodibenzo-P-Dioxin

The aims of this research was to investigate effect of alpha-tocopherol on spermatozoa death in form of apoptosis and necrosis in rats (Rattus norvegicus) exposed 2,3,7,8- tetrachlorodibenzo-p-dioxin. Male rats were administered TCDD and alpha-tocopherol in experimental groups. Five experimental groups of a combination of TCDD and alpha- tocopherol were designed as follows; 0.5 ml of corn oil (control negative group, K-), 700 ng/kg/d of TCDD and 0.5 ml of corn oil (treatment control), 700 ng/kg/d of TCDD and 77 ng/kg/d of alpha-tocopherol (Group P1), 700 ng/kg/d of TCDD and 140 mg/kg/d of alpha-tocopherol (Group P2), 700 ng/kg/d of TCDD and 259 mg/kg/d of alpha- tocopherol (Group P3) respectively. Alpha-tocopherol and TCDD were given by oral gavage for 20 days. The result indicated that TCDD increased spermatozoa death in form of apoptosis and also necrosis. Alpha-tocopherol at 259 mg/kg/d most effective to decreased spermatozoa death number. The conclusion indicated that alpha-tocopherol at 259 mg/kg/d effective to decreased the spermatozoa death in form of apoptosis and necrosis in rats (Rattus norvegicus) exposed 2,3,7,8-tetrachlorodibenzo-p-dioxin.