1
|
Zanin M, Varela Junior AS, Bonel Acosta I, Anastacio Da Silva E, Gehrcke MI, Corcini CD. Acute exposure to isoflurane impairs sperm parameters in mice. Drug Chem Toxicol 2024; 47:330-337. [PMID: 36756678 DOI: 10.1080/01480545.2023.2176513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/22/2023] [Accepted: 01/28/2023] [Indexed: 02/10/2023]
Abstract
Isoflurane, an inhalational anesthetic from the halogenated group, has been increasingly used in the medical and scientific fields. Due to its characteristics, it is capable of inducing anesthesia quickly and quietly; however, the adverse effects resulting from its use have not yet been fully elucidated, especially with regard to reproductive aspects. Considering its common use in research laboratories, whether for performing surgical procedures or for prior exposure to euthanasia, knowledge about its interference in sperm parameters of experimental models characterizes an important study goal. The aim of the present study was to determine the interference of acute exposure to isoflurane on the sperm quality of mice, both immediately previous to euthanasia and in later evaluation, twenty days after a single anesthetic exposure. Our results demonstrate that acute anesthetic exposure reduces sperm motility and is responsible for the formation of damaged sperm cells that are prone to apoptosis, which may affect the outcome of reproductive experiments even 20 days after exposure.
Collapse
Affiliation(s)
- Marina Zanin
- Program in Physiological Sciences, Institute of Biological Sciences, Federal University of Rio Grande, Rio Grande, Brazil
- Faculty of Veterinary Medicine, RAC-Center for Teaching and Research in Animal Reproduction, Federal University of Pelotas, Pelotas, Brazil
| | - Antonio Sergio Varela Junior
- Faculty of Veterinary Medicine, RAC-Center for Teaching and Research in Animal Reproduction, Federal University of Pelotas, Pelotas, Brazil
- Institute of Biological Sciences, Federal University of Rio Grande, Rio Grande, Brazil
| | - Izani Bonel Acosta
- Faculty of Veterinary Medicine, RAC-Center for Teaching and Research in Animal Reproduction, Federal University of Pelotas, Pelotas, Brazil
- Faculty of Veterinary Medicine, Federal University of Pelotas, University Campus, Pelotas, Brazil
| | - Edenara Anastacio Da Silva
- Faculty of Veterinary Medicine, RAC-Center for Teaching and Research in Animal Reproduction, Federal University of Pelotas, Pelotas, Brazil
- Faculty of Veterinary Medicine, Federal University of Pelotas, University Campus, Pelotas, Brazil
| | - Martielo Ivan Gehrcke
- Faculty of Veterinary Medicine, Federal University of Pelotas, University Campus, Pelotas, Brazil
| | - Carine Dahl Corcini
- Faculty of Veterinary Medicine, RAC-Center for Teaching and Research in Animal Reproduction, Federal University of Pelotas, Pelotas, Brazil
- Institute of Biological Sciences, Federal University of Rio Grande, Rio Grande, Brazil
| |
Collapse
|
2
|
Prathima P, Venkaiah K, Reddy MH, Pradeepkiran JA, Sainath SB. Antioxidant effects of α-lipoic acid against epididymal oxidative damage in adult offspring rats exposed to maternal hypothyroidism stress. Reprod Toxicol 2024; 125:108555. [PMID: 38342389 DOI: 10.1016/j.reprotox.2024.108555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 02/05/2024] [Accepted: 02/07/2024] [Indexed: 02/13/2024]
Abstract
It is well known that the epididymis promotes post-testicular sperm maturation events. However, its malfunction during congenital hypothyroidism is relatively less understood as compared to the testis. The present study evaluated the probable effect of α-lipoic acid on epididymal oxidative stress parameters in rats exposed to antithyroid drug, carbimazole during fetal period. Time-mated pregnant rats in unexposed and carbimazole (1.35 mg/Kg body weight exposed were allowed to deliver pups and weaned. At postnatal day 100, the F1 male pups were assessed for epididymal endpoints. Among the epididymal regions, significant elevation of lipid peroxidation levels, superoxide anion, and hydrogen peroxide contents with a concomitant reduction in the activity levels of superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase and reduced glutathione levels were observed in cauda epididymis of carbimazole exposed rats over controls. Significant elevation in sperm DNA fragmentation (comet assay), accelerated cauda epididymal sperm transit time and reduction in epididymal sialic acid content was observed in carbimazole exposed rats. RT-qPCR studies revealed that embryonic exposure to carbimazole resulted in down regulation of androgen receptor, nuclear factor eryrthoid 2 like 2, 5α-reducatse 1 mRNA levels, while up regulation of caspase 3 mRNA was observed in epididymal regions of rats. In addition, fetal exposure to carbimazole resulted in disorganization of cauda epididymal architecture in rats. Conversely, supplementation of α-lipoic acid (70 mg/Kg bodyweight) during PND 3 to 14 restored epididymal functions in carbimazole exposed rats and the ameliorative effects of lipoic acid could be attributed to its antioxidant and steroidogenic effects.
Collapse
Affiliation(s)
- P Prathima
- Department of Biotechnology, Vikrama Simhapuri University, Nellore 524 320, AP, India
| | - K Venkaiah
- Department of Biotechnology, Vikrama Simhapuri University, Nellore 524 320, AP, India
| | - M Hanuma Reddy
- Department of Marine Biology, Vikrama Simhapuri University, Nellore 524320, AP, India
| | | | - S B Sainath
- Department of Biotechnology, Vikrama Simhapuri University, Nellore 524 320, AP, India.
| |
Collapse
|
3
|
Lahimer M, Djekkoun N, Tricotteaux-Zarqaoui S, Corona A, Lafosse I, Ali HB, Ajina M, Bach V, Benkhalifa M, Khorsi-Cauet H. Impact of Perinatal Coexposure to Chlorpyrifos and a High-Fat Diet on Kisspeptin and GnRHR Presence and Reproductive Organs. TOXICS 2023; 11:789. [PMID: 37755799 PMCID: PMC10534599 DOI: 10.3390/toxics11090789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/08/2023] [Accepted: 09/12/2023] [Indexed: 09/28/2023]
Abstract
Emerging evidence has indicated the involvement of extrahypothalamic Kisspeptin and GnRHR in reproductive function. In this study, we evaluate if maternal exposure to the pesticide chlorpyrifos (CPF) and/or a high-fat diet (HFD) has an impact on the expression of Kisspeptin and GnRHR in the reproductive organs of rats' offspring. A total of 16 pregnant rats are divided into four groups: a control group (n = 4), CPF group (4 rats exposed daily to 1/mg/kg/day), HFD group (4 rats randomly fed a 5.25 kcal/g HFD), and coexposed group (4 rats exposed to CPF and HDF). At postnatal development postnatal day (PND) 60, male and female offspring were sacrificed. The reproductive organs (ovary and testis) were removed, and histological and immunohistological analysis and in silico quantification (TissueGnostics software 6.0.1.102, TissueFAXS, HistoQuest) were applied to investigate the impact of different treatments on Kisspeptin and GnRHR expression in reproductive organs. The main outcomes of the study showed a significant decrease in rat offspring's body weight in the CPF group from PND30 and PND60 (p < 0.05 and p < 0.01, respectively). Histological analysis showed a significant increase in the atretic follicle and abnormal testis structure with germ cell desquamation in the CPF-exposed group. The immunodetection quantification of protein shows a significant decrease in GnRHR and Kisspeptin in the HFD and CPF exposed groups, respectively, in testis rat offspring. Perinatal exposure to CPF and HFD exposure affect the reproduction function of rat offspring.
Collapse
Affiliation(s)
- Marwa Lahimer
- PERITOX-(UMR-I 01), UPJV/INERIS, UPJV, CURS, Chemin du Thil, 80025 Amiens, France; (M.L.); (N.D.); (S.T.-Z.); (A.C.); (V.B.); (M.B.)
- ART and Reproductive Biology Laboratory, University Hospital and School of Medicine, CHU Sud, 80025 Amiens, France
- Exercise Physiology and Physiopathology: From Integrated to Molecular “Biology, Medicine and 9 Health” (Code: LR19ES09), Sousse 4002, Tunisia;
| | - Narimane Djekkoun
- PERITOX-(UMR-I 01), UPJV/INERIS, UPJV, CURS, Chemin du Thil, 80025 Amiens, France; (M.L.); (N.D.); (S.T.-Z.); (A.C.); (V.B.); (M.B.)
| | - Sophian Tricotteaux-Zarqaoui
- PERITOX-(UMR-I 01), UPJV/INERIS, UPJV, CURS, Chemin du Thil, 80025 Amiens, France; (M.L.); (N.D.); (S.T.-Z.); (A.C.); (V.B.); (M.B.)
| | - Aurélie Corona
- PERITOX-(UMR-I 01), UPJV/INERIS, UPJV, CURS, Chemin du Thil, 80025 Amiens, France; (M.L.); (N.D.); (S.T.-Z.); (A.C.); (V.B.); (M.B.)
| | - Isabelle Lafosse
- MP3CV—UPJV—UR 7517, Jules Verne University of Picardie, 80025 Amiens, France;
| | - Habib Ben Ali
- Laboratory Histology Embryology, Faculty of Medicine Sousse, University of Sousse, Sousse 4000, Tunisia;
| | - Mounir Ajina
- Exercise Physiology and Physiopathology: From Integrated to Molecular “Biology, Medicine and 9 Health” (Code: LR19ES09), Sousse 4002, Tunisia;
- Service of Reproductive Medicine, University Hospital Farhat Hached, Sousse 4000, Tunisia
| | - Véronique Bach
- PERITOX-(UMR-I 01), UPJV/INERIS, UPJV, CURS, Chemin du Thil, 80025 Amiens, France; (M.L.); (N.D.); (S.T.-Z.); (A.C.); (V.B.); (M.B.)
| | - Moncef Benkhalifa
- PERITOX-(UMR-I 01), UPJV/INERIS, UPJV, CURS, Chemin du Thil, 80025 Amiens, France; (M.L.); (N.D.); (S.T.-Z.); (A.C.); (V.B.); (M.B.)
- ART and Reproductive Biology Laboratory, University Hospital and School of Medicine, CHU Sud, 80025 Amiens, France
| | - Hafida Khorsi-Cauet
- PERITOX-(UMR-I 01), UPJV/INERIS, UPJV, CURS, Chemin du Thil, 80025 Amiens, France; (M.L.); (N.D.); (S.T.-Z.); (A.C.); (V.B.); (M.B.)
| |
Collapse
|
4
|
Souza GS, Freitas IMM, Souza JC, Miraglia SM, Paccola CC. Transgenerational effects of maternal exposure to nicotine on structures of pituitary-gonadal axis of rats. Toxicol Appl Pharmacol 2023; 468:116525. [PMID: 37076090 DOI: 10.1016/j.taap.2023.116525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 04/10/2023] [Accepted: 04/14/2023] [Indexed: 04/21/2023]
Abstract
Smoking can lead to several diseases and cause a reduction in fertility in men and women. Among the various components of cigarettes harmful during pregnancy, nicotine stands out. It can cause a reduction in placental blood flow, compromising the development of the baby with neurological, reproductive and endocrine consequences. Thus, we aimed to evaluate the effects of nicotine on the pituitary-gonadal axis of rats exposed during pregnancy and breastfeeding (1st generation - F1), and whether the possible damage observed would reach the 2nd generation (F2). Pregnant Wistar rats received 2 mg/kg/day of nicotine throughout the entire gestation and lactation. Part of the offspring was evaluated on the first neonatal day (F1) for macroscopic, histopathological and immunohistochemical analyses of brain and gonads. Another part of the offspring was kept until 90 days-old for mating and obtainment of progenies that had the same parameters evaluated at the end of pregnancy (F2). The occurrence of malformations was more frequent and diversified in nicotine-exposed F2. Brain alterations, including reduced size and changes in cell proliferation and death, were seen in both generations of nicotine-exposed rats. Male and female gonads of F1 exposed rats were also affected. The F2 rats showed reduced cellular proliferation and increased cell death on the pituitary and ovaries, besides increased anogenital distance in females. The number of mast cells was not enough altered to indicate an inflammatory process in brain and gonads. We conclude that prenatal exposure to nicotine causes transgenerational alterations in the structures of pituitary-gonadal axis in rats.
Collapse
Affiliation(s)
- G S Souza
- Developmental Biology Laboratory, Department of Morphology and Genetic, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - I M M Freitas
- Developmental Biology Laboratory, Department of Morphology and Genetic, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - J C Souza
- Developmental Biology Laboratory, Department of Morphology and Genetic, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - S M Miraglia
- Developmental Biology Laboratory, Department of Morphology and Genetic, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - C C Paccola
- Developmental Biology Laboratory, Department of Morphology and Genetic, Federal University of Sao Paulo, Sao Paulo, Brazil.
| |
Collapse
|
5
|
Rahali D, Dallagi Y, Hupkens E, Veegh G, Mc Entee K, Asmi ME, El Fazaa S, El Golli N. Spermatogenesis and steroidogenesis disruption in a model of metabolic syndrome rats. Arch Physiol Biochem 2023; 129:222-232. [PMID: 32886530 DOI: 10.1080/13813455.2020.1812665] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
CONTEXT Metabolic syndrome (MetS) is a clustering of several physiological alterations. OBJECTIVE This study was designed to evaluate the effects of MetS on rats spermatogenesis and steroidogenesis. MATERIALS AND METHODS We developed a MetS rodent model using high-sugar and high-fat diet. RESULTS MetS rats showed severe disorders in sperm parameters. Interestingly, a significant increase in malondialdehyde level and a decrease in the antioxidant activities were observed. Moreover, qRT-PCR analysis showed Bax down-regulation and Bcl-2 up-regulation. A decrease in testosterone level was identified, correlated with the CYP11A1, CYP17A1 and 17β HSD testicular marker down-regulation. Finally, MetS rats showed an up-regulation of pro-inflammatory cytokines receptors IL-1R and IL-6R. CONCLUSION MetS induced severe testis toxicity in male rats. Mets markedly distorted sperm parameters, inhibited the transcription of steroidogenic enzymes and led to oxidative stress, inflammation, and alteration of Bax/Bcl-2 ratioin testicular tissues.
Collapse
Affiliation(s)
- Dalila Rahali
- Faculty of Sciences of Tunis, University Tunis El Manar, Laboratory of Neurophysiology, Cellular physiopathology and Biomolecule valorisation, Tunis, Tunisia
| | - Yosra Dallagi
- Faculty of Sciences of Tunis, University Tunis El Manar, Laboratory of Neurophysiology, Cellular physiopathology and Biomolecule valorisation, Tunis, Tunisia
| | - Emmeline Hupkens
- Laboratory of Physiology and Pharmacology, Faculty of Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Gregory Veegh
- Laboratory of Physiology and Pharmacology, Faculty of Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Kathleen Mc Entee
- Laboratory of Physiology and Pharmacology, Faculty of Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Monia El Asmi
- Department of Biochemistry, La Rabta Hospital, Tunis, Tunisia
| | - Saloua El Fazaa
- Faculty of Sciences of Tunis, University Tunis El Manar, Laboratory of Neurophysiology, Cellular physiopathology and Biomolecule valorisation, Tunis, Tunisia
| | - Narges El Golli
- Faculty of Sciences of Tunis, University Tunis El Manar, Laboratory of Neurophysiology, Cellular physiopathology and Biomolecule valorisation, Tunis, Tunisia
| |
Collapse
|
6
|
Francisco CM, Fischer LW, Vendramini V, de Oliva SU, Paccola CC, Miraglia SM. Resveratrol reverses male reproductive damage in rats exposed to nicotine during the intrauterine phase and breastfeeding. Andrology 2022; 10:951-972. [PMID: 35472028 DOI: 10.1111/andr.13183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 03/30/2022] [Accepted: 04/05/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Nicotine leads to reproductive changes culminating in male infertility and subfertility. Resveratrol, a polyphenol, is a biological modulator. Sirtuin 1 (SIRT1) protein can positively act on male reproduction, and its expression can be affected by nicotine and modulated by resveratrol. OBJECTIVES The capability of resveratrol to reverse the reproductive damage in adult male offspring, which was nicotine-exposed during the intrauterine phase and breastfeeding, was investigated. MATERIALS AND METHODS Four groups were established with male offspring born from nicotine-exposed and non-exposed rat dams during pregnancy and lactation. Forty-eight male Wistar rats were distributed into four groups: sham control (SC), resveratrol (R), nicotine (N), and nicotine + resveratrol (NR). Rat dams of the N and NR offspring were exposed to nicotine (2 mg/kg/day) during pregnancy and lactation using a subcutaneously implanted minipump. The offspring of the R and NR groups received resveratrol (300 mg/kg of body weight, gavage) for 63 days from puberty. At 114 days of age, the male rats were euthanized. RESULTS Nicotine did not alter the body weight, biometry of reproductive organs, or quantitative sperm parameters of adult offspring but caused an evident worsening of all sperm qualitative parameters studied. Daily treatment with resveratrol from puberty up to adulthood improved all qualitative sperm parameters significantly, leading some of them close to the control values. Resveratrol also improved the morphological integrity and expression of SIRT1 in the seminiferous epithelium of nicotine-exposed offspring. CONCLUSION AND DISCUSSION Resveratrol reversed the male reproductive damage caused by nicotine. Nicotine crosses the blood-placental membrane and is present in the breast milk of mothers who smoke. Resveratrol restored the altered reproductive parameters in the male adult offspring that were nicotine-exposed during intrauterine life and breastfeeding. The epigenetic modulating action of resveratrol can be involved in this nicotine damage reversion. Resveratrol may be a promising candidate to be investigated regarding the adjuvant strategies in the treatment of male infertility.
Collapse
Affiliation(s)
| | | | - Vanessa Vendramini
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
| | - Samara Urban de Oliva
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
| | - Camila Cicconi Paccola
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
| | - Sandra Maria Miraglia
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
| |
Collapse
|
7
|
Gajski G, Ravlić S, Godschalk R, Collins A, Dusinska M, Brunborg G. Application of the comet assay for the evaluation of DNA damage in mature sperm. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2021; 788:108398. [PMID: 34893163 DOI: 10.1016/j.mrrev.2021.108398] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 10/26/2021] [Accepted: 11/05/2021] [Indexed: 06/14/2023]
Abstract
DNA integrity is considered an important parameter of semen quality and is of significant value as a predictor of male fertility. Currently, there are several methods that can assess sperm DNA integrity. One such assay is the comet assay, or single-cell gel electrophoresis, which is a simple, sensitive, reliable, quick and low-cost technique that is used for measuring DNA strand breaks and repair at the level of individual cells. Although the comet assay is usually performed with somatic cells from different organs, the assay has the ability to detect genotoxicity in germ cells at different stages of spermatogenesis. Since the ability of sperm to remove DNA damage differs between the stages, interpretation of the results is dependent on the cells used. In this paper we give an overview on the use and applications of the comet assay on mature sperm and its ability to detect sperm DNA damage in both animals and humans. Overall, it can be concluded that the presence in sperm of significantly damaged DNA, assessed by the comet assay, is related to male infertility and seems to reduce live births. Although there is some evidence that sperm DNA damage also has a long-term impact on offspring's health, this aspect of DNA damage in sperm is understudied and deserves further attention. In summary, the comet assay can be applied as a useful tool to study effects of genotoxic exposures on sperm DNA integrity in animals and humans.
Collapse
Affiliation(s)
- Goran Gajski
- Institute for Medical Research and Occupational Health, Mutagenesis Unit, Zagreb, Croatia.
| | - Sanda Ravlić
- University of Zagreb, Centre for Research and Knowledge Transfer in Biotechnology, Zagreb, Croatia
| | - Roger Godschalk
- Maastricht University, School for Nutrition and Translational Research in Metabolism (NUTRIM), Department of Pharmacology & Toxicology, Maastricht, the Netherlands
| | - Andrew Collins
- University of Oslo, Institute of Basic Medical Sciences, Department of Nutrition, Oslo, Norway
| | - Maria Dusinska
- Norwegian Institute for Air Research (NILU), Department of Environmental Chemistry, Health Effects Laboratory, Kjeller, Norway
| | - Gunnar Brunborg
- Norwegian Institute of Public Health (NIPH), Section of Molecular Toxicology, Department of Environmental Health, Oslo, Norway
| |
Collapse
|
8
|
Genetic and epigenetic modifications of F1 offspring's sperm cells following in utero and lactational combined exposure to nicotine and ethanol. Sci Rep 2021; 11:12311. [PMID: 34112894 PMCID: PMC8192516 DOI: 10.1038/s41598-021-91739-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 05/18/2021] [Indexed: 02/05/2023] Open
Abstract
It is well established that maternal lifestyle during pregnancy and lactation affects the intrauterine programming of F1 offspring. However, despite the co-use of alcohol and nicotine is a common habit, the effects of exposure to both substances on the reproductive system of F1 male offspring and the underlying mechanisms of developmental programming have not been investigated. The present study aimed to examine pre- and postnatal concurrent exposure to these substances on genetic and epigenetic alterations of sperm cells as well as testis properties of F1 offspring compared with exposure to each substance alone. Pregnant dams in the F0 generation randomly received normal saline, nicotine, ethanol, and combinations throughout full gestation and lactation periods. Sperm cells and testes of F1 male offspring were collected at postnatal day 90 for further experiments. High levels of sperm DNA fragmentation were observed in all exposed offspring. Regarding epigenetic alterations, there was a significant increase in the relative transcript abundance of histone deacetylase 1 and 2 in all exposed sperm cells. Moreover, despite a decrease in the expression level of DNA methyltransferase (DNMT) 3A, no marked differences were found in the expression levels of DNMT1 and 3B in any of the exposed sperm cells compared to non-exposed ones. Interestingly, combined exposure had less prominent effects relative to exposure to each substance alone. The changes in the testicular and sperm parameters were compatible with genetic and epigenetic alterations. However, MDA level as an oxidative stress indicator increased in all exposed pups, which may be responsible for such outputs. In conclusion, maternal co-exposure to these substances exhibited epigenotoxicity effects on germline cells of F1 male offspring, although these effects were less marked relative to exposure to each substance alone. These counteracting effects may be explained by cross-tolerance and probably less impairment of the antioxidant defense system.
Collapse
|
9
|
Al-Sawalha NA, Pokkunuri ID, Alzoubi KH, Khabour OF, Almomani BN. Waterpipe Tobacco Smoke Exposure during Lactation-Susceptibility of Reproductive Hormones and Oxidative Stress Parameters in Male Progeny Rats. Reprod Sci 2021; 28:37-42. [PMID: 32748221 DOI: 10.1007/s43032-020-00282-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 07/29/2020] [Indexed: 11/24/2022]
Abstract
There is a growing evidence for the public health hazards associated with waterpipe tobacco smoking (WTS). While the adverse effects of WTS exposure during pregnancy on the offspring are widely reported, its impact during breastfeeding remains less understood. The effects of WTS exposure during lactation on the reproductive hormones and oxidative stress biomarkers of adult male progeny were examined. Lactating rats received either fresh air (controls) or mainstream WTS for 1 h twice/day from day 4 to day 21 of lactation. The offspring was then followed up until week 20. The data indicated that WTS exposure in the lactating animals reduced the levels of follicle-stimulating hormone (FSH), prolactin (P < 0.05), luteinizing hormone (LH) (P = 0.1146), and estradiol (P = 0.0773) in the blood in male progeny. While the activities of testicular superoxide dismutase (SOD), glutathione peroxidase (GPx) and the levels of thiobarbituric acid reactive substances (TBARS) and blood levels of testosterone (P >0.05) remained unaltered, the activity of catalase increased significantly indicating an increased oxidant load in the WTS exposed rats compared to the controls. WTS exposure during lactation impairs male reproductive hormonal profile, augments oxidative damage, and potentially affects male fertility in male offspring rats.
Collapse
Affiliation(s)
- Nour A Al-Sawalha
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan.
| | | | - Karem H Alzoubi
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan
| | - Omar F Khabour
- Faculty of Applied Medical Sciences, Jordan University of Science and Technology, Irbid, Jordan
| | - Bashar N Almomani
- Ministry of Health, National Institute of Forensic Medicine, Amman, Jordan
| |
Collapse
|
10
|
Simas JN, Mendes TB, Fischer LW, Vendramini V, Miraglia SM. Resveratrol improves sperm DNA quality and reproductive capacity in type 1 diabetes. Andrology 2021; 9:384-399. [PMID: 32808479 DOI: 10.1111/andr.12891] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 08/10/2020] [Accepted: 08/13/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND In the coming decades, diabetes mellitus might affect 628 million individuals. Its final impact on male fertility and reproductive outcomes should be considered since the number of adolescents and young adults presenting diabetes is rising. Resveratrol (RES), a polyphenol, is a biological modulator with multitarget and multi-action characteristics. OBJECTIVES to evaluate if RES is effective against the male reproductive damage caused by type 1 diabetes (DM1), focusing on sperm DNA integrity and reproductive outcome. MATERIALS AND METHODS At 30 dpp (days postpartum), male rats were divided into 7 groups: Sham control (SC); RES vehicle (RV); RES (R); STZ-diabetic (D; induced at 30dpp with 65 mg/kg of streptozotocin); STZ-diabetic + insulin (DI); STZ-diabetic + RES (DR); STZ-diabetic + insulin +RES (DIR). DR, DIR, and R groups received 150mg RES/kg b.w./day by gavage (from 33 to 110dpp). DI and DIR received insulin (from day 5 after DM1 induction until 110dpp). Blood glucose was monitored in different time points. Animals were mated with healthy females. Euthanasia occurred at 110 dpp. RESULTS DM1 increased lipid peroxidation (testis and epididymis) and sperm DNA fragmentation, alterations of chromatin structure, reduced mitochondrial mass and acrosome integrity, causing a decline in fertility and pregnancy rates. RES improved the parameters. DISCUSSION RES, as an adjuvant, activates specific reactions against hyperglycemia, the main trigger of most complications of diabetes, by controlling oxidative stress, probably as a result of SIRT1 activation. We present here more evidences showing its valuable role in diminishing diabetes seriousness to male reproduction, not only to spermatogenesis in the first instance, but also to sperm overall quality and fertility outcomes, regardless of insulin treatment. CONCLUSION RES attenuated lipid peroxidation and sperm DNA damage in DM1-induced animals, which positively reflected on male fertility. Our results show RES potential against DM1 complications in male reproduction.
Collapse
Affiliation(s)
- Joana N Simas
- Laboratory of Developmental Biology, Department of Morphology and Genetics, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - Talita B Mendes
- Laboratory of Developmental Biology, Department of Morphology and Genetics, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - Leonardo W Fischer
- Laboratory of Developmental Biology, Department of Morphology and Genetics, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - Vanessa Vendramini
- Laboratory of Developmental Biology, Department of Morphology and Genetics, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| | - Sandra M Miraglia
- Laboratory of Developmental Biology, Department of Morphology and Genetics, Federal University of Sao Paulo (UNIFESP), Sao Paulo, Brazil
| |
Collapse
|
11
|
Fetal and Postnatal Nicotine Exposure Modifies Maturation of Gonocytes to Spermatogonia in Mice. ACTA ACUST UNITED AC 2020; 2020:8892217. [PMID: 33381390 PMCID: PMC7758125 DOI: 10.1155/2020/8892217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 11/23/2020] [Indexed: 12/31/2022]
Abstract
Studies in laboratory animals have shown that male offspring from dams, exposed to nicotine during pregnancy and postnatal periods, show alterations in fertility, although the origin of this is still uncertain. In this study, we examined in a mouse model if the process of gonocyte maturation to spermatogonia was affected in male offspring from dams with nicotine administration during pregnancy and postnatal periods. BALB/C mice, with and without nicotine administrations in pregnancy and postnatal periods, were studied. The animals were euthanized at 3, 7, 10, 16, and 35 days postpartum (dpp). Testicular tissue samples were processed for histological, ultrastructural, and immunohistochemical studies; and testicular lipoperoxidation was determined. It was observed that in the nicotine-exposed animals, there was increased apoptosis and a reduction in the number of gonocytes that matured to spermatogonia. This gonocyte-spermatogonia maturation reduction was associated with a greater immunoreactivity to nicotinic acetylcholine receptors in the germ cells. Lipoperoxidation was similar in both groups until 16 dpp, with significant reduction at 35 dpp. Our findings suggest that nicotine intake during pregnancy and postnatal periods can affect the process of maturation of gonocytes to spermatogonia and the pool of available spermatogonia for spermatogenesis.
Collapse
|
12
|
α-lipoic acid protects testis and epididymis against linuron-induced oxidative toxicity in adult rats. Toxicol Res 2020; 36:343-357. [PMID: 33005594 DOI: 10.1007/s43188-019-00036-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 11/20/2019] [Accepted: 12/10/2019] [Indexed: 12/12/2022] Open
Abstract
Linuron is well known for its antiandrogenic property. However, the effects of linuron on testicular and epididymal pro- and antioxidant status are not well defined. On the other hand, α-lipoic acid is well known as universal antioxidant. Therefore, the purpose of this study was twofold: firstly to investigate whether linuron exposure alters antioxidant status in the testis and epididymis of rats and if so, whether the supplementation of α-lipoic acid mitigates linuron-induced oxidative toxicity in rats. To address this question, α-lipoic acid at a dose of 70 mg/Kg body weight (three times a week) was administered to linuron exposed rats (10 or 50 mg/Kg body weight, every alternate day over a period of 60 days), and the selected reproductive endpoints were analyzed after 60 days. Respective controls were maintained in parallel. Linuron at selected doses reduced testicular daily sperm count, and epididymal sperm count, sperm motility, sperm viability, and number of tail coiled sperm, reduced activity levels of 3β- and 17β-hydroxysteroid dehydrogenases, decreased expression levels of StAR mRNA, inhibition of testosterone levels, and elevated levels of testicular cholesterol in rats over controls. Linuron intoxication deteriorated the structural integrity of testis and epididymis associated with reduced the reproductive performance over controls. Conversely, α-lipoic acid supplementation enhanced sperm quality and improved the testosterone synthesis pathway in linuron exposed rats over its respective control. Administration of α-lipoic acid restored inhibition of testicular and epididymal enzymatic (superoxide dismutase, catalase, glutathione reductase, glutathione peroxidise) and non-enzymatic (glutathione content), increased lipid peroxidation and protein carbonyl content produced by linuron in rats. α-lipoic acid supplementation inhibited the expression levels of testicular caspase-3 mRNA levels and also its activity in linuron treated rats. To summate, α-lipoic acid-induced protection of reproductive health in linuron treated rats could be attributed to its antioxidant, and steroidogenic properties.
Collapse
|
13
|
Zhang Q, Pei LG, Liu M, Lv F, Chen G, Wang H. Reduced testicular steroidogenesis in rat offspring by prenatal nicotine exposure: Epigenetic programming and heritability via nAChR/HDAC4. Food Chem Toxicol 2019; 135:111057. [PMID: 31846720 DOI: 10.1016/j.fct.2019.111057] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 12/10/2019] [Accepted: 12/13/2019] [Indexed: 01/06/2023]
Abstract
Prenatal nicotine exposure (PNE) may lead to offspring's testicular dysplasia. Here, we confirmed the intergenerational effect of PNE on testosterone synthetic function and explored its epigenetic programming mechanism. Pregnant Wistar rats were injected subcutaneously with nicotine (2 mg/kg.d) from gestational day 9-20. Some dams were anesthetized to obtain fetal rats, the rest were allowed to spontaneous labor to generate F1 and F2 generation. In utero, PNE impaired testicular development and testosterone production. Meanwhile, the expression of steroidogenic acute regulatory protein (StAR) and 3β-hydroxysteroid dehydrogenase (3β-HSD) were decreased both in F1 and F2 generations. Furthermore, PNE enhanced the expression of fetal testicular nicotinic acetylcholine receptors (nAChRs) and histone deacetylase 4 (HDAC4), while obviously weakened histone 3 lysine 9 acetylation (H3K9ac) level of StAR/3β-HSD promoter from GD20 to postnatal week 12 and even in F2 generation. In vitro, nicotine increased nAChRs and HDAC4 expression, and decreased the StAR/3β-HSD H3K9ac level and expression, as well as the testosterone production in Leydig cells. Antagonism of nAChRs and inhibition of HDAC4 reversed the aforementioned changes. In conclusion, PNE programmed testicular low steroidogenesis and its heritability in male offspring rats. The underlying mechanism was associated to the low-level programming of StAR/3β-HSD H3K9ac via nAChR/HDAC4.
Collapse
Affiliation(s)
- Qi Zhang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Lin-Guo Pei
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China; Basic Medical College of Nanyang Medical University, Nanyang, 473041, China
| | - Min Liu
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Feng Lv
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Guanghui Chen
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China
| | - Hui Wang
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan, 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan, 430071, China.
| |
Collapse
|
14
|
Beltrame FL, de Santi F, Vendramini V, Cabral REL, Miraglia SM, Cerri PS, Sasso-Cerri E. Vitamin B 12 Prevents Cimetidine-Induced Androgenic Failure and Damage to Sperm Quality in Rats. Front Endocrinol (Lausanne) 2019; 10:309. [PMID: 31354617 PMCID: PMC6635670 DOI: 10.3389/fendo.2019.00309] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/30/2019] [Indexed: 11/27/2022] Open
Abstract
Cimetidine, used as an anti-ulcer and adjuvant treatment in cancer therapy, causes disorders in the male reproductive tract, including steroidogenesis. However, its effect on sperm quality and male fertility has been poorly addressed. Since vitamin B12 has demonstrated to recover spermatogonia number and sperm concentration in cimetidine-treated rats, we evaluated the impact of cimetidine on sperm quality and fertility potential and whether vitamin B12 is able to prevent the harmful effect of this drug on steroidogenesis and sperm parameters. Adult male rats were treated for 52 consecutive days as follows: cimetidine group (100 mg/kg of cimetidine), cimetidine/vitamin B12 group (100 mg/kg of cimetidine + 3 μg vitamin B12), vitamin B12 group (3 μg vitamin B12) and control group (saline). Serum testosterone levels and immunofluorescence associated to western blot for detection of 17β-HSD6 were performed. Sperm morphology and motility, mitochondrial activity, acrosome integrity, DNA integrity by Comet assay, lipid peroxidation as well as fertility potential were analyzed in all groups. Apoptotic spermatids were also evaluated by caspase-3 immunohistochemistry. In the cimetidine-treated animals, reduced serum testosterone levels, weak 17β-HSD6 levels and impaired spermiogenesis were observed. Low sperm motility and mitochondrial activity were associated with high percentage of sperm tail abnormalities, and the percentage of spermatozoa with damaged acrosome and DNA fragmentation increased. MDA levels were normal in all groups, indicating that the cimetidine-induced changes are associated to androgenic failure. In conclusion, despite the fertility potential of rats was unaffected by the treatment, the sperm quality was significantly impaired. Therefore, considering a possible sperm-mediated transgenerational inheritance, the long term offspring health needs to be investigated. The administration of vitamin B12 to male rats prevents the androgenic failure and counteracts the damage inflicted by cimetidine upon sperm quality, indicating that this vitamin may be used as a therapeutic agent to maintain the androgenic status and the sperm quality in patients exposed to androgen disrupters.
Collapse
Affiliation(s)
- Flávia Luciana Beltrame
- Department of Morphology and Genetics, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil
| | - Fabiane de Santi
- Department of Morphology and Genetics, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil
| | - Vanessa Vendramini
- Department of Morphology and Genetics, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil
| | | | - Sandra Maria Miraglia
- Department of Morphology and Genetics, Federal University of São Paulo (UNIFESP/EPM), São Paulo, Brazil
| | - Paulo Sérgio Cerri
- Laboratory of Histology and Embryology, Department of Morphology, Dental School – São Paulo State University (UNESP/FOAr), Araraquara, Brazil
| | - Estela Sasso-Cerri
- Laboratory of Histology and Embryology, Department of Morphology, Dental School – São Paulo State University (UNESP/FOAr), Araraquara, Brazil
- *Correspondence: Estela Sasso-Cerri
| |
Collapse
|
15
|
Mohamed DA, Abdelrahman SA. The possible protective role of zinc oxide nanoparticles (ZnONPs) on testicular and epididymal structure and sperm parameters in nicotine-treated adult rats (a histological and biochemical study). Cell Tissue Res 2018; 375:543-558. [DOI: 10.1007/s00441-018-2909-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 08/08/2018] [Indexed: 10/28/2022]
|
16
|
Simas JN, Mendes TB, Paccola CC, Vendramini V, Miraglia SM. Resveratrol attenuates reproductive alterations in type 1 diabetes-induced rats. Int J Exp Pathol 2017; 98:312-328. [PMID: 29285813 PMCID: PMC5826946 DOI: 10.1111/iep.12251] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 08/31/2017] [Indexed: 12/11/2022] Open
Abstract
The progression of diabetes mellitus leads to several complications including overproduction of reactive oxygen species and reproductive alterations. As resveratrol (RES) is a powerful anti-oxidant and an anti-apoptotic compound, we hypothesized that side effects of type-1 diabetes (DM1) on male reproduction could be reduced by the RES treatment. Eighty-four prepubertal male rats were distributed into seven groups: sham-control (SC), RES-treated (R), resveratrol-vehicle-treated (RV), diabetic (D), diabetic-insulin-treated (DI), diabetic-RES-treated (DR), diabetic-insulin and RES-treated (DIR). DM1 was induced by a single intraperitoneal streptozotocin (STZ) injection (65 mg/kg) on the 30th day postpartum (dpp). Animals of DR, DIR and R groups received 150 mg/day of RES by gavage for 43 consecutive days (from the 33 to 75 dpp). DI and DIR rats received subcutaneous injections of insulin (1 U/100 g b.w./day) from 5th day after the DM1 induction. The blood glucose level was monitored. At 75 dpp, the euthanasia was performed for morphometric and biometric testicular analyses, spermatic evaluation and hormonal doses. In the D group, the blood glucose level was higher than in the DR, DI and DIR groups. Besides morphometric testicular measurements, testosterone and estradiol doses were lower in D group than in DR and DIR groups; LH dose was also lower than in DR. The preputial separation age was delayed in diabetes-induced groups. The DR and DIR groups showed an improvement in sperm mitochondrial activity, epididymal sperm counts and the frequency of morphologically normal sperms. RES treatment improved glycaemic level, sperm quantitative and qualitative parameters and the hormonal profile in DM1-induced rats and seems to be a good reproductive protector.
Collapse
Affiliation(s)
- Joana Noguères Simas
- Laboratory of Developmental BiologyDepartment of Morphology and GeneticsFederal University of Sao Paulo (UNIFESP)Sao PauloSPBrazil
| | - Talita Biude Mendes
- Laboratory of Developmental BiologyDepartment of Morphology and GeneticsFederal University of Sao Paulo (UNIFESP)Sao PauloSPBrazil
| | - Camila Cicconi Paccola
- Laboratory of Developmental BiologyDepartment of Morphology and GeneticsFederal University of Sao Paulo (UNIFESP)Sao PauloSPBrazil
| | - Vanessa Vendramini
- Laboratory of Developmental BiologyDepartment of Morphology and GeneticsFederal University of Sao Paulo (UNIFESP)Sao PauloSPBrazil
| | - Sandra Maria Miraglia
- Laboratory of Developmental BiologyDepartment of Morphology and GeneticsFederal University of Sao Paulo (UNIFESP)Sao PauloSPBrazil
| |
Collapse
|
17
|
Anto SK, Koyada N, Khan S, Jena G. α-Lipoic acid attenuates transplacental nicotine-induced germ cell and oxidative DNA damage in adult mice. J Basic Clin Physiol Pharmacol 2016; 27:585-593. [PMID: 27658139 DOI: 10.1515/jbcpp-2015-0151] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Accepted: 06/07/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Smoking during pregnancy is associated with numerous fetal and developmental complications and reproductive dysfunctions in the offspring. Nicotine is one of the key chemicals of tobacco responsible for addiction. The present study was aimed to investigate the protective role of α-lipoic acid (ALA) during the transplacental nicotine-induced germ cell and DNA damage in the offspring of Swiss mice. METHODS Pregnant mice were treated with nicotine (20 mg/kg/day) in drinking water from 10 to 20 days of gestation period, and ALA (120 mg/kg/day) was administered orally for the same period. Endpoint of evaluation includes general observations at delivery and throughout the study, litter weight and size, sperm count and sperm head morphology, while structural damages and protein expression were assessed by histology and immunohistochemistry, respectively. RESULTS Maternal nicotine exposure led to decreased growth rate, litter and testicular weight, testosterone level, 3β-HSD expression and sperm count as well as increased sperm head abnormalities, micronucleus frequency and 8-oxo-dG positive cells, and the effects have been restored by ALA supplementation. CONCLUSIONS The present study clearly demonstrated that ALA ameliorates nicotine-associated oxidative stress, DNA damage and testicular toxicity in the offspring by improving steroidogenesis, spermatogenesis and sperm count.
Collapse
|
18
|
Comet assay: an essential tool in toxicological research. Arch Toxicol 2016; 90:2315-36. [DOI: 10.1007/s00204-016-1767-y] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 06/14/2016] [Indexed: 01/02/2023]
|
19
|
Mendes TB, Paccola CC, de Oliveira Neves FM, Simas JN, da Costa Vaz A, Cabral REL, Vendramini V, Miraglia SM. Resveratrol improves reproductive parameters of adult rats varicocelized in peripuberty. Reproduction 2016; 152:23-35. [DOI: 10.1530/rep-16-0025] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 04/05/2016] [Indexed: 11/08/2022]
Abstract
The aim of this study was to investigate the protective action of resveratrol against the reproductive damage caused by left-sided experimental varicocele. There was a reduction of testicular major axis in the varicocele group when compared with the other groups; the testicular volume was reduced in varicocele group in comparison to the sham–control and resveratrol groups. The frequency of morphologically abnormal sperm was higher in varicocele and varicocele treated with resveratrol groups than in sham–control and resveratrol groups. The frequency of sperm with 100% of mitochondrial activity and normal acrosome integrity were lower in varicocele group than in varicocele treated with resveratrol, sham–control and resveratrol groups. Sperm motility was also reduced in varicocele group than in other groups. The sperm DNA fragmentation was higher in varicocele group than in other groups. Testicular levels of malondialdehyde were higher in varicocele and varicocele treated with resveratrol groups. The varicocele and varicocele treated with resveratrol groups had a significantly higher frequency of TUNEL-positive cells than sham–control and resveratrol groups; however, immunolabeling of the testes from varicocele treated with resveratrol group showed a lower number of apoptotic germ cells in comparison with the left testis of rats of the varicocele group. Reproductive alterations produced by varicocele from peripuberty were reduced by resveratrol in adulthood. Resveratrol should be better investigated as an adjuvant in the treatment of varicocele. Daily administration of resveratrol to rats with varicocele from peripuberty improves sperm quality in the adulthood.
Collapse
|