scholarly journals Three-Generation Study of Male Rats Gestationally Exposed to High Butterfat and Bisphenol A: Impaired Spermatogenesis, Penetrance with Reduced Severity

Nutrients ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 3636
Author(s):  
Shuk-Mei Ho ◽  
Rahul Rao ◽  
Bin Ouyang ◽  
Neville N. C. Tam ◽  
Emma Schoch ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Endocrine Disruptor ◽  
Estrogen Receptor Beta ◽  
Male Rats ◽  
Adult Males ◽  
Sprague Dawley ◽  
Domain 3 ◽  
Data Gap ◽  
F2 Generation ◽  
Generation Offspring

Gestational high butterfat (HFB) and/or endocrine disruptor exposure was previously found to disrupt spermatogenesis in adulthood. This study addresses the data gap in our knowledge regarding transgenerational transmission of the disruptive interaction between a high-fat diet and endocrine disruptor bisphenol A (BPA). F0 generation Sprague-Dawley rats were fed diets containing butterfat (10 kcal%) and high in butterfat (39 kcal%, HFB) with or without BPA (25 µg/kg body weight/day) during mating and pregnancy. Gestationally exposed F1-generation offspring from different litters were mated to produce F2 offspring, and similarly, F2-generation animals produced F3-generation offspring. One group of F3 male offspring was administered either testosterone plus estradiol-17β (T + E2) or sham via capsule implants from postnatal days 70 to 210. Another group was naturally aged to 18 months. Combination diets of HFB + BPA in F0 dams, but not single exposure to either, disrupted spermatogenesis in F3-generation adult males in both the T + E2-implanted group and the naturally aged group. CYP19A1 localization to the acrosome and estrogen receptor beta (ERbeta) localization to the nucleus were associated with impaired spermatogenesis. Finally, expression of methyl-CpG-binding domain-3 (MBD3) was consistently decreased in the HFB and HFB + BPA exposed F1 and F3 testes, suggesting an epigenetic component to this inheritance. However, the severe atrophy within testes present in F1 males was absent in F3 males. In conclusion, the HFB + BPA group demonstrated transgenerational inheritance of the impaired spermatogenesis phenotype, but severity was reduced in the F3 generation.

scholarly journals Male-specific suppression of hepatic microsomal UDP-glucuronosyl transferase activities toward sex hormones in the adult male rat administered bisphenol A

2002 ◽  
Vol 368 (3) ◽  
pp. 783-788 ◽  
Author(s):  
Noriaki SHIBATA ◽  
Junya MATSUMOTO ◽  
Ken NAKADA ◽  
Akira YUASA ◽  
Hiroshi YOKOTA
Keyword(s):  
Bisphenol A ◽  
Mrna Expression ◽  
Sex Hormones ◽  
Adult Male ◽  
Endocrine Disruptor ◽  
Liver Microsomes ◽  
Female Rats ◽  
Male Rats ◽  
Male Rat ◽  
Blotting Analysis

Various adverse effects of endocrine disruptors on the reproductive organs of male animals have been reported. We found that UDP-glucuronosyltransferase (UGT) activities towards bisphenol A, testosterone and oestradiol were significantly decreased in liver microsomes prepared from adult male Wistar rats administered with the endocrine disruptor bisphenol A (1mg/2 days for 2 or 4 weeks). However, suppression of the transferase activities was not observed in female rats, even after bisphenol A treatment for 4 weeks. Diethylstilbestrol, which is well known as an endocrine disruptor, had the same effects, but p-cumylphenol had no effect on UGT activities towards sex hormones. Co-administration of an anti-oestrogen, tamoxifen, inhibited the suppression of the transferase activities by bisphenol A. Western blotting analysis showed that the amount of UGT2B1, an isoform of UGT which glucuronidates bisphenol A, was decreased in the rat liver microsomes by the treatment. Northern blotting analysis also indicated that UGT2B1 mRNA in the liver was decreased by bisphenol A treatment. The suppression of UGT activities, UGT2B1 protein and UGT2B1 mRNA expression did not occur in female rats. The results indicate that bisphenol A treatment reduces the mRNA expression of UGT2B1 and other UGT isoforms that mediate the glucuronidation of sex hormones in adult male rats, and this suggests that the endocrine balance may be disrupted by suppression of glucuronidation.

scholarly journals Pemberian bisphenol A (BPA) oral dapat menurunkan kadar testosteron pada tikus (Rattus norvegicus) jantan galur Sprague Dawley

2017 ◽  
Vol 9 (2) ◽  
Author(s):  
Nuriyah . ◽  
IGM Aman ◽  
Wimpie Pangkahila
Keyword(s):  
Bisphenol A ◽  
Testosterone Level ◽  
Rattus Norvegicus ◽  
Endocrine Disruptor ◽  
Control Group ◽  
Sprague Dawley ◽  
Control Group Design ◽  
Testosterone Levels ◽  
Group Design ◽  
The Mean

Abstract: Bisphenol A (BPA) has the structural and physiological activity of estrogen and acts as an endocrine disruptor. This study was aimed to prove that oral BPA could decrease testosterone levels in male Sprague Dawley rats. This was an experimental study with a randomized pretest-posttest control group design using 14 rats (Rattus norvegicus), male, Sprague Dawley strain, 2-3 months old, as subjects. Rats were divided into two groups with 7 rats each. The control group (P0) was treated with placebo for 14 days and the treatment group (P1) was treated with oral bisphenol A (BPA) single dose of 400mg/kg/day for 14 days (P1). At before and after 14-day treatment, blood was drawn through the canthus medial of orbital sinus to obtain the pretest and posttest data. Testosterone levels were examined by using ELISA. The results showed that before treatment (pretest), the mean testosterone level in P0 group was 8.29±4.68 nmol/L, while in P1 group was 7.39±1.45 nmol/L (P > 0.05). After treatment for 14 days, the mean testosterone level in P0 group was 7.40±1.37 nmol/L, while in P1 group was 3.36±1.26 nmol/L (P < 0.01). The statistical analysis showed that there was no difference in testosterone levels in P0 group (P > 0.05), meanwhile there was a very significant decrease of testosterone levels in P1 group (P < 0.01) after the treatment of BPA 400mg/kg/day for 14 days. Conclusion: Oral bisphenol A (BPA) could decrease testosterone levels in male rats (Rattus norvegicus) of Sprague Dawley strain.Keywords: bisphenol A (BPA), testosteroneAbstrak: Bisphenol A (BPA) memiliki aktifitas hormon estrogen sehingga jika masuk ke dalam tubuh dapat menjadi endocrine disruptor. Penelitian ini bertujuan untuk membuktikan pemberian BPA oral dapat menurunkan kadar testosteron pada tikus (Rattus norvegicus) jantan galur Sprague Dawley. Jenis penelitian ialah eksperimental dengan randomized pretest-postest control group design yang menggunakan 14 ekor tikus (Rattus norvegicus) jantan, galur Sprague Dawley, berumur 2-3 bulan, yang terbagi menjadi 2 (dua) kelompok masing-masing berjumlah 7 ekor tikus. Kelompok kontrol (P0) diberikan plasebo 14 hari dan kelompok perlakuan (P1) diberi BPA dosis tunggal 400mg/kgBB/hari selama 14 hari. Saat sebelum dan sesudah perlakuan selama 14 hari, darah diambil melalui chantus medial orbitalis untuk pemeriksaan pretest dan postest dan kadar testosteron diperiksa dengan metode ELISA. Hasil penelitian menunjukkan bahwa sebelum perlakuan (pretest), rerata kadar testosteron kelompok P0 8,29±4,68 nmol/L, sedangkan pada kelompok P1 7,39±1,45 nmol/L (P > 0,05). Setelah perlakuan selama 14 hari, rerata kadar testosteron kelompok P0 ialah 7,40±1,37 nmol/L dan pada kelompok P1 3,36±1,26 nmol/L (P < 0,01). Analisis efek perlakuan menunjukkan tidak terjadi penurunan kadar hormon testosteron pada kelompok P0 (P > 0,05), sedangkan penurunan bermakna terdapat pada kelompok P1 (P < 0,01). Simpulan: Pemberian bisphenol A (BPA) oral dapat menurunkan kadar testosteron pada tikus (Rattus norvegicus) jantan galur Sprague Dawley.Kata kunci: bisphenol A (BPA), testosteron

scholarly journals Monotonic Dose Effect of Bisphenol-A, an Estrogenic Endocrine Disruptor, on Estrogen Synthesis in Female Sprague-Dawley Rats

2017 ◽  
Vol 33 (4) ◽  
pp. 387-396 ◽  
Author(s):  
Subbaiyan Thilagavathi ◽  
Pachaiappan Pugalendhi ◽  
Thangarasu Rajakumar ◽  
Krishnamoorthy Vasudevan
Keyword(s):  
Bisphenol A ◽  
Endocrine Disruptor ◽  
Dose Effect ◽  
Sprague Dawley ◽  
Sprague Dawley Rats ◽  
Estrogen Synthesis

scholarly journals Therapeutic effects of astragaloside IV and Astragalus spinosus saponins against bisphenol A-induced neurotoxicity and DNA damage in rats

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11930
Author(s):  
Amina E. Essawy ◽  
Heba-Tallah Abd Elrahim Abd Elkader ◽  
Omaima A. Khamiss ◽  
Saber Mohamed Eweda ◽  
Heba Mohamed Abdou
Keyword(s):  
Dna Damage ◽  
Bisphenol A ◽  
Brain Regions ◽  
Male Rats ◽  
Therapeutic Effects ◽  
Sprague Dawley ◽  
Astragaloside Iv ◽  
Adult Age ◽  
Ameliorative Effect ◽  
Weaning Age

Background Bisphenol A (BPA) is an endocrine disruptor to which humans are often subjected during daily life. This study aimed to investigate the ameliorative effect of astragaloside IV (ASIV) or saponins extracted from Astragalus spinosus (A. spinosus) against DNA damage and neurotoxic effects induced by BPA in prefrontal cortex (PFC), hippocampal and striatal brain regions of developing male rats. Materials and Methods Juvenile PND20 (pre-weaning; age of 20 days) male Sprague Dawley rats were randomly and equally divided into four groups: control, BPA, BPA+ASIV and BPA+A. spinosus saponins groups. Bisphenol A (125 mg/kg/day) was administrated orally to male rats from day 20 (BPA group) and along with ASIV (80 mg/kg/day) (BPA+ASIV group) or A. spinosus saponin (100 mg/kg/day) (BPA+ A. spinosus saponins group) from day 50 to adult age day 117. Results Increased level of nitric oxide (NO) and decreased level of glutamate (Glu), glutamine (Gln), glutaminase (GA) and glutamine synthetase (GS) were observed in the brain regions of BPA treated rats compared with the control. On the other hand, co-administration of ASIV or A. spinosus saponin with BPA considerably improved levels of these neurochemicals. The current study also revealed restoration of the level of brain derived neurotrophic factor (BDNF) and N-methyl-D-aspartate receptors (NR2A and NR2B) gene expression in BPA+ ASIV and BPA+A. spinosus saponins groups. The co-treatment of BPA group with ASIV or A. spinosus saponin significantly reduced the values of comet parameters as well as the intensity of estrogen receptors (ERs) immunoreactive cells and improved the histological alterations induced by BPA in different brain regions. Conclusion It could be concluded that ASIV or A. spinosus saponins has a promising role in modulating the neurotoxicity and DNA damage elicited by BPA.

scholarly journals The Effect of Single and Triple Testicular Biopsy Using Biopty Gun on Spermatogenesis in Pubertal Rats

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1569
Author(s):  
Tomislav Šušnjar ◽  
Ivana Kuzmić Prusac ◽  
Ivan Švagelj ◽  
Anđela Jurišić ◽  
Tomislav Šušnjar ◽  
...  
Keyword(s):  
Sperm Count ◽  
Semen Analysis ◽  
Study Groups ◽  
Testicular Biopsy ◽  
Male Rats ◽  
Lower Percentage ◽  
Control Group ◽  
Sprague Dawley ◽  
Left Testis ◽  
Significant Difference

Background: The aim of this study was to compare consequences in single and triple testicular biopsy by biopty gun in pubertal rats using histological and immunohistochemical analysis. Methods: Thirty-two Sprague-Dawley male rats were used as the experimental model. The rats were randomly divided into three study groups. The rats from the first group (n = 12) received a single-biopsy of upper pole of the left testis, while the rats from the second group (n = 10) received triple-biopsy of upper and lower poles and lateral surface of left testis. The third group (n = 10) was a control group. On the eightieth day after the biopsy in all rats bilateral orchiectomy and funiculectomy were performed to obtain testicular tissue and sperm for analysis. The consequences of the puncture were observed by pathohistology, immunohistochemistry and semen analysis. Results: The results of the study showed lower percentage of sperm count (14.5 mill/mL vs. 16 mill/mL, p = 0.130), sperm motility (24.6% vs. 32.7%, p > 0.05), abnormal sperm (30% vs. 27%, p > 0.05), atrophic tubules (21% vs. 6%, p < 0.001), volume (1.7 mL vs. 2.28 mL, p < 0.01) and apoptotic index (1.56 vs. 1.19, p = 0.650) in the testes with a triple-biopsy compared to the testes with a single-biopsy. Semen analysis showed a borderline significant difference between the group with triple-biopsy where sperm count was lower than it in the control group (14.5 mill/mL vs. 17.5 mill/mL, p = 0.05). A single-biopsy has little effect on the testis, especially on overall fertility. A triple-biopsy showed higher degree of the testicular damage but without a significant impact on overall fertility. Semen analysis showed that single- and triple-biopsies did not have a significant effect on sperm count, motility and morphology. Conclusion: Biopty gun procedure is a cheap, simple and reliable method for testicular biopsy in rats without a significant effect on sperm count, motility and morphology.

scholarly journals Stamina-Enhancing Effects of Human Adipose-Derived Stem Cells

2021 ◽  
Vol 30 ◽  
pp. 096368972110354
Author(s):  
Eun-Jung Yoon ◽  
Hye Rim Seong ◽  
Jangbeen Kyung ◽  
Dajeong Kim ◽  
Sangryong Park ◽  
...  
Keyword(s):  
Physical Activity ◽  
Stem Cells ◽  
Locomotor Activity ◽  
Tissue Injury ◽  
Male Rats ◽  
Adipose Derived Stem Cells ◽  
Sprague Dawley ◽  
Serum Triglycerides

Stamina-enhancing effects of human adipose derived stem cells (hADSCs) were investigated in young Sprague-Dawley rats. Ten-day-old male rats were transplanted intravenously (IV) or intracerebroventricularly (ICV) with hADSCs (1 × 106 cells/rat), and physical activity was measured by locomotor activity and rota-rod performance at post-natal day (PND) 14, 20, 30, and 40, as well as a forced swimming test at PND 41. hADSCs injection increased the moving time in locomotor activity, the latency in rota-rod performance, and the maximum swimming time. For the improvement of physical activity, ICV transplantation was superior to IV injection. In biochemical analyses, ICV transplantation of hADSCs markedly reduced serum creatine phosphokinase, lactate dehydrogenase, alanine transaminase, and muscular lipid peroxidation, the markers for muscular and hepatic injuries, despite the reduction in muscular glycogen and serum triglycerides as energy sources. Notably, hADSCs secreted brain-derived neurotrophic factor (BDNF) and nerve growth factor in vitro, and increased the level of BDNF in the brain and muscles in vivo. The results indicate that hADSCs enhance physical activity including stamina not only by attenuating tissue injury, but also by strengthening the muscles via production of BDNF.

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