1
|
Li H, Yuan H, Yang ZP, Song Y, Wang JJ, Wen Q, Zheng YX, Zhang XX, Yu M, Yuan ZG. Differential transcriptome study on the damage of testicular tissues caused by chronic infection of T. gondii in mice. Parasit Vectors 2024; 17:252. [PMID: 38858789 PMCID: PMC11165745 DOI: 10.1186/s13071-024-06247-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/15/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND Toxoplasma gondii is an intracellular protozoan parasite that is widely distributed in humans and warm-blooded animals. T. gondii chronic infections can cause toxoplasmic encephalopathy, adverse pregnancy, and male reproductive disorders. In male reproduction, the main function of the testis is to provide a stable place for spermatogenesis and immunological protection. The disorders affecting testis tissue encompass abnormalities in the germ cell cycle, spermatogenic retardation, or complete cessation of sperm development. However, the mechanisms of interaction between T. gondii and the reproductive system is unclear. The aims were to study the expression levels of genes related to spermatogenesis, following T. gondii infection, in mouse testicular tissue. METHODS RNA-seq sequencing was carried out on mouse testicular tissues from mice infected or uninfected with the T. gondii type II Prugniaud (PRU) strain and validated in combination with real-time quantitative PCR and immunofluorescence assays. RESULTS The results showed that there were 250 significant differentially expressed genes (DEGs) (P < 0.05, |log2fold change| ≧ 1). Bioinformatics analysis showed that 101 DEGs were annotated to the 1696 gene ontology (GO) term. While there was a higher number of DEGs in the biological process classification as a whole, the GO enrichment revealed a significant presence of DEGs in the cellular component classification. The Arhgap18 and Syne1 genes undergo regulatory changes following T. gondii infection, and both were involved in shaping the cytoskeleton of the blood-testis barrier (BTB). The number of DEGs enriched in the MAPK signaling pathway, the ERK1/2 signaling pathway, and the JNK signaling pathway were significant. The PTGDS gene is located in the Arachidonic acid metabolism pathway, which plays an important role in the formation and maintenance of BTB in the testis. The expression of PTGDS is downregulated subsequent to T. gondii infection, potentially exerting deleterious effects on the integrity of the BTB and the spermatogenic microenvironment within the testes. CONCLUSIONS Overall, our research provides in-depth insights into how chronic T. gondii infection might affect testicular tissue and potentially impact male fertility. These findings offer a new perspective on the impact of T. gondii infection on the male reproductive system.
Collapse
Affiliation(s)
- Haoxin Li
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China
| | - Hao Yuan
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China.
| | - Zi-Peng Yang
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China
| | - Yining Song
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China
| | - Jun-Jie Wang
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China
| | - Qingyuan Wen
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China
| | - Yu-Xiang Zheng
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China.
| | - Xiu-Xiang Zhang
- College of Plant, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China.
| | - Miao Yu
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou, 510140, People's Republic of China.
| | - Zi-Guo Yuan
- Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China.
| |
Collapse
|
2
|
Freus M, Kabat-Koperska J, Frulenko I, Wiszniewska B, Kolasa A. Morphology of the male rat gonad after in Utero exposure to immunosuppressants. Reprod Biol 2023; 23:100757. [PMID: 37011422 DOI: 10.1016/j.repbio.2023.100757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 03/10/2023] [Accepted: 03/11/2023] [Indexed: 04/03/2023]
Abstract
The protocol for immunosuppression of pregnant women is based on immunosuppressant panels. The aim of the study was to determine the influence of commonly applied combinations of immunosuppressants to pregnant rats on the morphology of the offspring' testes. Pregnant rats were treated with cyclosporin A (CsA), mycophenolate mofetil (MMF) and prednisone (Pred) (CMG); tacrolimus (Tc), MMF and Pred (TMG); CsA, everolimus (Ev) and Pred (CEG). Testes of mature offspring underwent morphological analysis. Mainly in the testes of CMG and TMG rats the morphological and functional changes were observed: immature germ cells (GCs) in the seminiferous tubule (ST) lumen, invaginations of the basement membrane, infolding to the seminiferous epithelium (SE), the ST wall thickening, increased acidophilia of Sertoli cells' (SCs) cytoplasm, large residual bodies near the lumen, dystrophic ST and tubules look like the Sertoli cell-only syndrome, Leydig cells with abnormal cell nucleus, hypertrophy of the interstitium, blurring of the boundary between ST wall and interstitium, a reduced number of GCs in the SE, vacuolation of the SE. In the CEG there were only a reduced number of GCs in some tubules and vacuolization of SCs. The safest combination of drugs was CEG, while the TMG and CMG were gonadotoxic.
Collapse
|
3
|
Medaglia DSA, Vieira HR, Silveira SDS, Siervo GEMDL, Marcon MSDS, Mathias PCDF, Fernandes GSA. High-fructose diet during puberty alters the sperm parameters, testosterone concentration, and histopathology of testes and epididymis in adult Wistar rats. J Dev Orig Health Dis 2022; 13:20-27. [PMID: 33441200 DOI: 10.1017/s2040174420001385] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The consumption of fructose has increased in children and adolescents and is partially responsible for the high incidence of metabolic diseases. The lifestyle during postnatal development can result in altered metabolic programming, thereby impairing the reproductive system and fertility during adulthood. Therefore, the aim of this study was to evaluate the effect of a high-fructose diet in the male reproductive system of pubertal and adult rats. Male Wistar rats (30 d old) were assigned to four different groups: Fr30, which received fructose (20%) in water for 30 d and were euthanized at postnatal day (PND) 60; Re-Fr30, which received fructose (20%) for 30 d and were euthanized at PND 120; and two control groups C30 and Re-C30, which received water ad libitum and were euthanized at PND 60 and 120, respectively. Fructose induced an increase in abnormal seminiferous tubules with epithelial vacuoles, degeneration, and immature cells in the lumen. Moreover, Fr30 rats showed altered spermatogenesis and daily sperm production (DSP), as well as increased serum testosterone concentrations. After discontinuing high-fructose consumption, DSP and sperm number decreased significantly. We observed tissue remodeling in the epididymis, with a reduction in stromal and epithelial compartments that might have influenced sperm motility. Therefore, we concluded that fructose intake in peripubertal rats led to changes in the reproductive system observed both during puberty and adulthood.
Collapse
Affiliation(s)
- Daniele Sapede Alvarenga Medaglia
- Department of General Biology, State University of Londrina, Londrina, PR, Brazil
- Department of Sciences Pathology, State University of Londrina, Londrina, PR, Brazil
| | - Henrique Rodrigues Vieira
- Department of Biotechnology, Genetics, and Cell Biology, Biological Sciences Center, State University of Maringá, Maringá, PR, Brazil
| | - Sandra da Silva Silveira
- Department of Biotechnology, Genetics, and Cell Biology, Biological Sciences Center, State University of Maringá, Maringá, PR, Brazil
| | - Gláucia Eloisa Munhoz de L Siervo
- Department of General Biology, State University of Londrina, Londrina, PR, Brazil
- Department of Sciences Pathology, State University of Londrina, Londrina, PR, Brazil
| | - Monique Suellen da Silva Marcon
- Department of Biotechnology, Genetics, and Cell Biology, Biological Sciences Center, State University of Maringá, Maringá, PR, Brazil
| | - Paulo Cezar de Freitas Mathias
- Department of Biotechnology, Genetics, and Cell Biology, Biological Sciences Center, State University of Maringá, Maringá, PR, Brazil
| | - Glaura S A Fernandes
- Department of General Biology, State University of Londrina, Londrina, PR, Brazil
- Department of Sciences Pathology, State University of Londrina, Londrina, PR, Brazil
| |
Collapse
|
4
|
Samir SM, Elalfy M, Nashar EME, Alghamdi MA, Hamza E, Serria MS, Elhadidy MG. Cardamonin exerts a protective effect against autophagy and apoptosis in the testicles of diabetic male rats through the expression of Nrf2 via p62-mediated Keap-1 degradation. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2021; 25:341-354. [PMID: 34187951 PMCID: PMC8255125 DOI: 10.4196/kjpp.2021.25.4.341] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 05/08/2021] [Accepted: 05/27/2021] [Indexed: 12/14/2022]
Abstract
Cardamonin (CARD) is a chalconoid with anti-inflammatory and antioxidant properties, and it is present in several plants. We sought to explore whether CARD exerts any positive effects against hyperglycemia-induced testicular dysfunction caused by type 2 diabetes and aimed to identify its possible intracellular pathways. Adult male rats were subdivided into six groups: control, CARD, diabetic (DM), DM + glibenclamide (GLIB), DM + CARD and DM + GLIB + CARD. Type 2 DM induced a significant increase in blood glucose and insulin resistance, along with diminished serum insulin, testosterone and gonadotropins levels, which were associated with the impairment of key testicular androgenic enzymes and cellular redox balance. Administration of CARD at a dose of 80 mg/kg for 4 weeks effectively normalized all of these alterations, and the improvement was confirmed by epididymal sperm analysis. After treatment with CARD, the pathological changes in spermatogenic tubules were markedly improved. Significantly, CARD upregulated testicular glucose transporter-8 (GLUT-8) expression and had inhibitory effects on elevated autophagy markers and caspase-3 immunoreactive cells. Furthermore, our results revealed that CARD was able to attenuate damage via activation of Nrf2 through the p62-dependent degradation of testicular anti-Kelch-like ECH-associated protein-1 (Keap-1). In conclusion, this study suggests that CARD provides protection against diabetic stress-mediated testicular damage. The use of CARD with conventional anti-diabetic therapy was associated with improved efficacy compared with conventional therapy alone.
Collapse
Affiliation(s)
- Shereen M Samir
- Department of Medical Physiology, College of Medicine, Mansoura University, Mansoura 35511, Egypt
| | - Mahmoud Elalfy
- Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Mansoura University, Mansoura 35511, Egypt
| | - Eman Mohamad El Nashar
- Department of Anatomy, Faculty of Medicine, King Khalid University, Abha 61421, Saudi Arabia.,Department of Histology and Cell Biology, College of Medicine, Benha University, Benha 13511, Egypt
| | - Mansour A Alghamdi
- Department of Anatomy, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia.,Genomics and Personalized Medicine Unit, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia
| | - Eman Hamza
- Medical Biochemistry Department, College of Medicine, Mansoura University, Mansoura 35511, Egypt
| | - Mohamed Saad Serria
- Medical Biochemistry Department, College of Medicine, Mansoura University, Mansoura 35511, Egypt
| | - Mona G Elhadidy
- Department of Medical Physiology, College of Medicine, Mansoura University, Mansoura 35511, Egypt.,Department of Medical Physiology, College of Medicine, Al-Baha University, Al-Baha 65525, Saudi Arabia
| |
Collapse
|
5
|
Zhao S, Yuan C, Tuo X, Zhou C, Zhao Q, Shen T. MCLR induces dysregulation of calcium homeostasis and endoplasmic reticulum stress resulting in apoptosis in Sertoli cells. CHEMOSPHERE 2021; 263:127868. [PMID: 32828052 DOI: 10.1016/j.chemosphere.2020.127868] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 07/20/2020] [Accepted: 07/27/2020] [Indexed: 06/11/2023]
Abstract
Microcystins-LR (MCLR) is a potent reproductive system toxin. We have previously shown that MCLR induced endoplasmic reticulum (ER) stress and apoptosis in testis. ER is the main calcium storage site in cells, and its calcium homeostasis plays an important role in the regulation of apoptosis. Hence, in the present study, we have investigated the role of calcium (Ca2+) in inducing apoptosis and how it affect the mitochondria and endoplasmic reticulum in TM4 cells. Our study found that MCLR induced an increase in Ca2+ concentration in TM4 cells. Compared to the controls, MCLR induced phosphorylation of calmodulin-dependent protein kinase II (CaMKII) which was involved in MAPKs activation, resulting in the induction of mitochondrial apoptosis pathways. Ca2+ chelator Bapta-AM partially reversed MCLR-induced apoptosis, confirming the possible involvement of calcium homeostasis disruption after MCLR exposure. Meanwhile, MCLR activated unfolded protein response and activated the ER apoptotic pathway by activating caspase-12. In addition, exposure to MCLR causes mitochondrial defects and increased apoptosis by up-regulating caspase 3 and cytosol cytochrome c expression. Collectively, these results demonstrated that MCLR disturbed calcium homeostasis, which caused ER-mitochondria dysfunction, ultimately promoted cell apoptosis in Sertoli cells.
Collapse
Affiliation(s)
- Sujuan Zhao
- School of Public Health, Anhui Medical University, Hefei, China
| | - Chunyang Yuan
- School of Public Health, Anhui Medical University, Hefei, China
| | - Xun Tuo
- College of Chemistry, Nanchang University, Nanchang, 330031, China
| | - Chengfan Zhou
- School of Public Health, Anhui Medical University, Hefei, China
| | - Qihong Zhao
- School of Public Health, Anhui Medical University, Hefei, China
| | - Tong Shen
- School of Public Health, Anhui Medical University, Hefei, China.
| |
Collapse
|
6
|
Interplay between male reproductive system dysfunction and the therapeutic effect of flavonoids. Fitoterapia 2020; 147:104756. [PMID: 33069836 DOI: 10.1016/j.fitote.2020.104756] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/11/2020] [Accepted: 10/12/2020] [Indexed: 12/20/2022]
Abstract
Male infertility has affected many families around the world. However, due to the mechanism underlying male reproductive system dysfunction are not completely elucidated, the use of drugs for male reproductive system dysfunction treatment only insignificant higher pregnancy outcomes, low-quality evidence suggests that clinical pregnancy rates may increase. Therefore, the focus in the future will be on developing more viable treatment options to prevent or treatment of male reproductive system dysfunction and achieve the purpose of improving fertility. Interestingly, natural products, as the potential inhibitors for the treatment of male reproductive system dysfunction, have shown a good therapeutic effect. Among many natural products, flavonoids have been extensively investigated for the treatment of male reproductive system dysfunction, such as testicular structural disruption, spermatogenesis disturbance and sperm quality decline. Flavonoids have been reported to have antioxidant, anti-inflammatory, immune stimulating, anti-apoptotic, anticarcinogenic, anti-allergic and antiviral activities, investigating for the treatment of male reproductive system dysfunction. In this review, we evaluate the therapeutic effects of flavonoids on male reproductive system dysfunction under different cellular scenarios and summarize the therapeutic strategies of flavonoids based on the aforementioned retrospective analysis. In the end, we describe some perspective research areas relevant to the application of flavonoids in the treatment of male reproductive system dysfunction.
Collapse
|
7
|
Yuan L, Li Q, Bai D, Shang X, Hu F, Chen Z, An T, Chen Y, Zhang X. La 2O 3 Nanoparticles Induce Reproductive Toxicity Mediated by the Nrf-2/ARE Signaling Pathway in Kunming Mice. Int J Nanomedicine 2020; 15:3415-3431. [PMID: 32523341 PMCID: PMC7236057 DOI: 10.2147/ijn.s230949] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Accepted: 04/14/2020] [Indexed: 12/12/2022] Open
Abstract
Purpose Lanthanum oxide (La2O3) nanoparticles (NPs) have been widely used in catalytic and photoelectric applications, but the reproductive toxicity is still unclear. This study evaluated the reproductive toxicity of two different-sized La2O3 particles in the testes. Materials and Methods Fifty Kunming mice were randomly divided into five groups. Mice were treated with La2O3 NPs by repeated intragastric administration for 90 days (control, nano-sized with 5, 10, 50 mg/kg BW and micro-sized with 50 mg/kg BW). Mice in the control group were treated with de-ionised water without La2O3 NPs. Sperm parameters, testicular histopathology, TEM assessment, hormone assay and nuclear factor erythroid 2-related factor 2 (Nrf-2) pathway were performed and evaluated. Results The body weight of mice treated with La2O3 NPs or not had no difference; sperm parameters and histological assessment showed that La2O3 NPs could induce reproductive toxicity in the testicle. Serum testosterone and gonadotropin-releasing hormone (GnRH) in the NH (nano-sized with 50 mg/kg BW) group were markedly decreased relative to control group, and an increase of luteinizing hormone (LH) in NH group was detected . Additionally, transmission electron microscopy revealed that the ultrastructural abnormalities induced by La2O3 NPs were more severe than La2O3 MPs in the testes. Furthermore, La2O3 NPs treatment inhibited the translocation of nuclear factor erythroid 2-related factor 2 (Nrf-2) from the cytoplasm into the nucleus as well as the expression of downstream genes NAD(P)H quinone oxidoreductase1 (NQO1), hemeoxygenase 1 (HO-1) and (glutathione peroxidase) GSH-Px, thus abrogating Nrf-2-mediated defense mechanisms against oxidative stress. Conclusions The results of this study demonstrated that La2O3 NPs improved the spermatogenesis defects in mice. La2O3 NPs inhibited Nrf-2/ARE signaling pathway that resulted in apoptosis in the mice testes.
Collapse
Affiliation(s)
| | | | | | | | | | - Zhenfei Chen
- Environmental Monitoring Center Tang Shan, Tangshan 063210, Hebei, People's Republic of China
| | | | - Yajing Chen
- College of Pharmacy of North China University of Science and Technology, Tangshan 063210, Hebei, People's Republic of China
| | | |
Collapse
|
8
|
Kong T, Zhang SH, Zhang C, Zhang JL, Yang F, Wang GY, Yang ZJ, Bai DY, Shi YY, Liu TQ, Li HL. The Effects of 50 nm Unmodified Nano-ZnO on Lipid Metabolism and Semen Quality in Male Mice. Biol Trace Elem Res 2020; 194:432-442. [PMID: 31264129 DOI: 10.1007/s12011-019-01792-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 06/19/2019] [Indexed: 11/30/2022]
Abstract
Fifty male mice were exposed to 50 nm unmodified nano-ZnO through intragastric administration for 90 days to detect the long-term effects of unmodified nano-ZnO in mice. Results showed that the blood glucose, serum follicle stimulating hormone, luteinizing hormone, testosterone, and estradiol were significantly decreased (p < 0.05). The serum triglyceride, total cholesterol, and low-density lipoprotein were significantly increased (p < 0.05). The semen quality of the 160 mg/kg·bw group were significantly lowered (p < 0.05). The liver and testis catalase and CuZn-SOD activities were significantly elevated (p < 0.05). The abilities of •OH inhibition in the livers and testes of the 160 mg/kg·bw group were significantly lowered (p < 0.05). The liver and testis MDA levels of the 160 mg/kg·bw group were significantly elevated (p < 0.05). Results indicate that exposure of nano-ZnO could induce lipid metabolism disorder, hyperlipidemia, and reproductive toxicity to male mice through oxidative injury.
Collapse
Affiliation(s)
- Tao Kong
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China.
- Environmental and Animal Products Safety Laboratory of Key Discipline in University of Henan Province, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China.
| | - Shu-Hui Zhang
- Library of Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
| | - Cai Zhang
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
- Environmental and Animal Products Safety Laboratory of Key Discipline in University of Henan Province, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
| | - Ji-Liang Zhang
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
- Environmental and Animal Products Safety Laboratory of Key Discipline in University of Henan Province, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
| | - Fan Yang
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
- Environmental and Animal Products Safety Laboratory of Key Discipline in University of Henan Province, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
| | - Guo-Yong Wang
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
| | - Zi-Jun Yang
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
- Environmental and Animal Products Safety Laboratory of Key Discipline in University of Henan Province, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
| | - Dong-Ying Bai
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
| | - Yun-Yun Shi
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
| | - Tian-Qi Liu
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
| | - Hai-Long Li
- College of Animal Science and Veterinary Medicine, Henan University of Science and Technology, No. 263 Kaiyuan Road, Luoyang, 471023, Henan, People's Republic of China
| |
Collapse
|
9
|
Jin YH, Davie A, Migaud H. Temperature-induced testicular germ cell loss and recovery in Nile tilapia Oreochromis niloticus. Gen Comp Endocrinol 2019; 283:113227. [PMID: 31348956 DOI: 10.1016/j.ygcen.2019.113227] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 05/25/2019] [Accepted: 07/22/2019] [Indexed: 11/18/2022]
Abstract
Water temperature is a critical external factor influencing gonadal development in fish. This research aimed to study the impact of elevated temperature on testicular germ cell survival and reproductive capacity of Nile tilapia. Male Nile tilapia were exposed to high temperatures of either 36 (HT1) or 37 °C (HT2) for 3000 degree-days (DD) and thereafter returned to the control temperature of 27 °C (CT) for 2200 DD. The deleterious effects on testicular germ and somatic cells were observed histologically, characterised by vacuolisation, atrophy and the loss of spermatogenic cells in testes with a more severe impact of HT2 compared to HT1. Interestingly, serum 11-ketotestosterone (11-KT) and testosterone (T) levels tended to be higher during the heat treatments than CT. Expression levels of germline-specific genes piwil1, piwil2 and nanos2 and Bcl-2 family genes, bcl-xLb and baxa were significantly reduced during the heat treatment compared to CT, more so in the HT2, while the levels of nanos3 and gfra1 transcripts were only significantly reduced in HT2, implying a significant loss of spermatogonial stem cell (SSC) and spermatogonia in HT2. The effect of HT2 is further evidenced by the significantly reduced sperm density and fertilisation rate compared to CT and HT1 at the end of the recovery period but complete sterility was not induced by HT2. Overall, the present study showed significant effects of HT2 on germ cell survival with histological changes in testes, reduced milt quality, increased 11-KT, and decreased expression of germline-specific genes, SSC marker genes and Bcl-2 family genes in testes which could therefore be potential target genes for sterilisation by genome editing.
Collapse
Affiliation(s)
- Ye Hwa Jin
- Institute of Aquaculture, University of Stirling, Stirling, FK9 4LA, UK; The Roslin Institute, University of Edinburgh, Easter Bush Campus, Midlothian, EH25 9RG, UK
| | - Andrew Davie
- Institute of Aquaculture, University of Stirling, Stirling, FK9 4LA, UK
| | - Herve Migaud
- Institute of Aquaculture, University of Stirling, Stirling, FK9 4LA, UK.
| |
Collapse
|
10
|
Zhang M, Park HJ, Seo SA, Seo HR, Song H. Evaluation of toxicity of 4-octylphenol in TM4 Sertoli cells: an in vitro study. Toxicol Mech Methods 2019; 29:623-631. [DOI: 10.1080/15376516.2019.1646368] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Mingtian Zhang
- Department of Stem Cell and Regenerative Biology, Konkuk University, Seoul, Republic of Korea
| | - Hyun Jung Park
- Department of Stem Cell and Regenerative Biology, Konkuk University, Seoul, Republic of Korea
| | - Sang-Ah Seo
- Department of Stem Cell and Regenerative Biology, Konkuk University, Seoul, Republic of Korea
| | - Hye-Ryoung Seo
- Department of Stem Cell and Regenerative Biology, Konkuk University, Seoul, Republic of Korea
| | - Hyuk Song
- Department of Stem Cell and Regenerative Biology, Konkuk University, Seoul, Republic of Korea
| |
Collapse
|
11
|
Luddi A, Governini L, Wilmskötter D, Gudermann T, Boekhoff I, Piomboni P. Taste Receptors: New Players in Sperm Biology. Int J Mol Sci 2019; 20:E967. [PMID: 30813355 PMCID: PMC6413048 DOI: 10.3390/ijms20040967] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/13/2019] [Accepted: 02/18/2019] [Indexed: 12/21/2022] Open
Abstract
Taste receptors were first described as sensory receptors located on the tongue, where they are expressed in small clusters of specialized epithelial cells. However, more studies were published in recent years pointing to an expression of these proteins not only in the oral cavity but throughout the body and thus to a physiological role beyond the tongue. The recent observation that taste receptors and components of the coupled taste transduction cascade are also expressed during the different phases of spermatogenesis as well as in mature spermatozoa from mouse to humans and the overlap between the ligand spectrum of taste receptors with compounds in the male and female reproductive organs makes it reasonable to assume that sperm "taste" these different cues in their natural microenvironments. This assumption is assisted by the recent observations of a reproductive phenotype of different mouse lines carrying a targeted deletion of a taste receptor gene as well as the finding of a significant correlation between human male infertility and some polymorphisms in taste receptors genes. In this review, we depict recent findings on the role of taste receptors in male fertility, especially focusing on their possible involvement in mechanisms underlying spermatogenesis and post testicular sperm maturation. We also highlight the impact of genetic deletions of taste receptors, as well as their polymorphisms on male reproduction.
Collapse
Affiliation(s)
- Alice Luddi
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy.
| | - Laura Governini
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy.
| | - Dorke Wilmskötter
- Walther-Straub-Institute of Pharmacology and Toxicology, Ludwig-Maximilians-University, 80539 Munich, Germany.
| | - Thomas Gudermann
- Walther-Straub-Institute of Pharmacology and Toxicology, Ludwig-Maximilians-University, 80539 Munich, Germany.
| | - Ingrid Boekhoff
- Walther-Straub-Institute of Pharmacology and Toxicology, Ludwig-Maximilians-University, 80539 Munich, Germany.
| | - Paola Piomboni
- Department of Molecular and Developmental Medicine, Siena University, 53100 Siena, Italy.
| |
Collapse
|
12
|
Khorsandi L, Oroojan AA. Toxic effect of Tropaeolum majus L. leaves on spermatogenesis in mice. JBRA Assist Reprod 2018; 22:174-179. [PMID: 29949321 PMCID: PMC6106639 DOI: 10.5935/1518-0557.20180035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 04/01/2018] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE To evaluate the hydroethanolic extract toxicity, obtained from Tropaeolum majus L. (TM) on mouse testicular tissue. METHOD In this experimental study, we used 32 male NMRI mice. The experimental groups received 75, 375 and 750 mg/kg of TM extract, respectively. Twenty-four hours after the last experimental day, serum samples were collected for hormonal measurement. Then, the cauda of epididymis and testis were removed for sperm count and histopathological assessments. RESULTS Testosterone serum and testicular levels decreased in 750 mg/kg in the treated group when compared to the control animals (1.65±0.25; p=0.041 and 98.83±8.67; p=0.034 respectively). Histopathological criteria such as epithelial vacuolization (9.3±1.1; p=0.034), sloughing (4.3±0.4; p=0.027) and detachment (12.2±0.9; p=0.031) of germ cells were significantly increased in 750 mg/kg in the treated mice. In addition, there were no significant changes in histopathological criteria; sperm head numbers, Johnsen's scoring, and morphometry assessments were carried out in the 75 and 375 mg/kg treated mice. At the dose of 750 mg/kg, the seminiferous tubule diameter (193.2±4.6; p=0.019), seminiferous epithelium height (139.2±5.1; p=0.023), and maturation arrest were significantly decreased in this group. CONCLUSION In conclusion, TM extract has toxic effects on the mouse testicular tissue in high doses. Hence, we recommend caution concerning its consumption by patients with reproductive problems.
Collapse
Affiliation(s)
- Layasadat Khorsandi
- Department of Anatomical Sciences, Faculty of Medicine, Cellular and
Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz,
Iran
| | - Ali Akbar Oroojan
- Department of Physiology, Faculty of Medicine, Student Research
Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| |
Collapse
|
13
|
Bejarano I, Rodríguez AB, Pariente JA. Apoptosis Is a Demanding Selective Tool During the Development of Fetal Male Germ Cells. Front Cell Dev Biol 2018; 6:65. [PMID: 30003081 PMCID: PMC6031705 DOI: 10.3389/fcell.2018.00065] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 06/08/2018] [Indexed: 02/06/2023] Open
Abstract
Apoptosis is widely known to play a major role on diseases related to male infertility. Diseases of the male genital tract as defective spermatogenesis, decreased sperm motility, sperm DNA fragmentation, testicular torsion, varicocele and immunological infertility are strongly related to apoptotic cell death. Apoptosis must not be considered only as a fail on germ cell physiology or a secondary effect of certain pathologies and exogenous hazardous agents. Apoptosis orchestrates correct function and development of the male germ cell from the early embryonic stages of gonadal differentiation to the fertilization. In this review we have tried to address a reading frame of the main knowledge about apoptosis in male germ cell development. Focussing on mechanisms concerning cellular apoptosis, which are independent of exogenous stimuli, we aimed to highlight that apoptosis is a selective instrument that guarantees the delivery of genetic message to offspring.
Collapse
Affiliation(s)
| | | | - José A. Pariente
- Neuroimmunophysiology and Chrononutrition Research Group, Department of Physiology, Faculty of Science, University of Extremadura, Badajoz, Spain
| |
Collapse
|
14
|
Liu L, Chang X, Zhang Y, Wu C, Li R, Tang L, Zhou Z. Fluorochloridone induces primary cultured Sertoli cells apoptosis: Involvement of ROS and intracellular calcium ions-mediated ERK1/2 activation. Toxicol In Vitro 2017; 47:228-237. [PMID: 29248592 DOI: 10.1016/j.tiv.2017.12.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 11/18/2017] [Accepted: 12/12/2017] [Indexed: 02/06/2023]
Abstract
Fluorochloridone (FLC) is a widely used pyrrolidone selective herbicide and reported to induce testis injuries in male rats, but the underlying mechanism is largely unknown. In the present study, primary-cultured Sertoli cells were exposed to FLC at the concentration of 0-10.00μM to study the mechanism of FLC-induced apoptosis. The roles of ROS, intracellular calcium, endoplasmic reticulum (ER), and ERK1/2 were looked at with ROS scavenger N-acetyl-cysteine (NAC), intracellular calcium chelator BAPTA-AM, ER calcium depleting agent thapsigargin (TG), and ERK1/2 inhibitor U0126, respectively. FLC induced dose-dependent apoptosis increase as well as the elevation in levels of ROS, intracellular calcium, and ERK1/2 activation. FLC treatment led to constantly increasing apoptotic rates and ERK1/2 activation over time, while inversed-V shaped change tendencies of ROS and intracellular calcium levels were observed. FLC-induced ROS generation disrupted the intracellular calcium homeostasis by attacking the ER, and the elevated intracellular calcium levels resulted in ERK1/2 over-phosphorylation and consequently promoted Sertoli cell apoptosis. Taken together, ROS and intracellular calcium-mediated ERK1/2 activation led to FLC-induced Sertoli cell apoptosis.
Collapse
Affiliation(s)
- Luqing Liu
- School of Public Health/MOE Key Laboratory for Public Health Safety/Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, Shanghai 200032, China
| | - Xiuli Chang
- School of Public Health/MOE Key Laboratory for Public Health Safety/Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, Shanghai 200032, China
| | - Yubin Zhang
- School of Public Health/MOE Key Laboratory for Public Health Safety/Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, Shanghai 200032, China
| | - Chunhua Wu
- School of Public Health/MOE Key Laboratory for Public Health Safety/Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, Shanghai 200032, China
| | - Rui Li
- School of Public Health/MOE Key Laboratory for Public Health Safety/Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, Shanghai 200032, China; Pharmacology and Toxicology Department, Shanghai Institute for Food and Drug Control, Shanghai 201203, China
| | - Liming Tang
- Pharmacology and Toxicology Department, Shanghai Institute for Food and Drug Control, Shanghai 201203, China
| | - Zhijun Zhou
- School of Public Health/MOE Key Laboratory for Public Health Safety/Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, Shanghai 200032, China.
| |
Collapse
|
15
|
Khorsandi L, Orazizadeh M, Moradi-Gharibvand N, Hemadi M, Mansouri E. Beneficial effects of quercetin on titanium dioxide nanoparticles induced spermatogenesis defects in mice. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:5595-5606. [PMID: 28035607 DOI: 10.1007/s11356-016-8325-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 12/21/2016] [Indexed: 06/06/2023]
Abstract
Many recent studies have demonstrated that most nanoparticles (NPs) have an adverse or toxic action on male germ cells. In present study, protective effect of quercetin (Que) on titanium dioxide nanoparticle (NTiO2)-induced spermatogenesis defects in mice was investigated. Thirty-two Naval Medical Research Institute (NMRI) mice were randomly divided into four groups. Que group received 75 mg/kg of Que for 42 days. NTiO2 group received 300 mg/kg NTiO2 for 35 days. NTiO2 + Que group initially received 75 mg/kg Que for 7 days and was followed by concomitant administration of 300 mg/kg NTiO2 for 35 days. Control group received only normal saline for 42 days. Sperm parameters, testosterone concentration, histological criteria, and apoptotic index were assessed. Product of lipid peroxidation (MDA), superoxide dismutase (SOD), and catalase (CAT) activities were also evaluated for oxidative stress in testicular tissue. Administration of NTiO2 significantly induced histological changes in testicular tissue; increased apoptotic index; and decreased testicular weight, testosterone concentration, and sperm quality (p < 0.01). In the testis, NTiO2 increased oxidative stress through an increase in lipid peroxidation and a decrease in SOD and CAT activities (p < 0.05). Que pretreatment could significantly attenuate testicular weight; apoptotic index; and histological criteria including vacuolization, detachment, and sloughing of germ cells in seminiferous tubules. Serum and tissue testosterone levels were significantly increased in Que-pretreated mice (p < 0.01). Sperm parameters including sperm number, motility, and percentage of abnormality were also effectively improved by Que pretreatment (p < 0.01). Pretreatment of Que significantly ameliorated oxidative stress and increased the activities of SOD and CAT in testicular tissue. These results indicate that sperm production can be increased by Que pretreatment in NTiO2-intoxicated mice. The improved sperm quality and reverse testis histology by Que pretreatment may be a consequence of elevation testosterone concentration, reduction in germ cell apoptosis, and suppression of oxidative stress in testicular tissue.
Collapse
Affiliation(s)
- Layasadat Khorsandi
- Cell and Molecular Research Center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, P. O. Box: 61335, Ahvaz, Iran.
- Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Mahmoud Orazizadeh
- Cell and Molecular Research Center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, P. O. Box: 61335, Ahvaz, Iran
- Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Nahid Moradi-Gharibvand
- Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Masoud Hemadi
- Fertility, Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Esrafil Mansouri
- Cell and Molecular Research Center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, P. O. Box: 61335, Ahvaz, Iran
- Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| |
Collapse
|
16
|
Villarroel-Espíndola F, Tapia C, González-Stegmaier R, Concha II, Slebe JC. Polyglucosan Molecules Induce Mitochondrial Impairment and Apoptosis in Germ Cells Without Affecting the Integrity and Functionality of Sertoli Cells. J Cell Physiol 2016; 231:2142-52. [DOI: 10.1002/jcp.25315] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 01/19/2016] [Indexed: 11/09/2022]
Affiliation(s)
| | - Cynthia Tapia
- Instituto de Bioquímica y Microbiología; Universidad Austral de Chile; Valdivia Chile
| | | | - Ilona I. Concha
- Instituto de Bioquímica y Microbiología; Universidad Austral de Chile; Valdivia Chile
| | - Juan Carlos Slebe
- Instituto de Bioquímica y Microbiología; Universidad Austral de Chile; Valdivia Chile
| |
Collapse
|
17
|
Dong YS, Hou WG, Li Y, Liu DB, Hao GZ, Zhang HF, Li JC, Zhao J, Zhang S, Liang GB, Li W. Unexpected requirement for a binding partner of the syntaxin family in phagocytosis by murine testicular Sertoli cells. Cell Death Differ 2015; 23:787-800. [PMID: 26494466 DOI: 10.1038/cdd.2015.139] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 09/14/2015] [Accepted: 09/25/2015] [Indexed: 01/07/2023] Open
Abstract
Testicular phagocytosis by Sertoli cells (SCs) plays an essential role in the efficient clearance of apoptotic spermatogenic cells under both physiological and pathological conditions. However, the molecular mechanism underlying this unique process is poorly understood. Herein, we report for the first time that α-taxilin protein (TXLNA), a binding partner of the syntaxin family that functions as a central player in the intracellular vesicle traffic, was dominantly expressed in SCs. Induction of apoptosis in murine meiotic spermatocytes and haploid spermatids by busulfan treatment stimulated a significant increase of TXLNA in SCs at day (d) 14 and d 24 after busulfan treatment, respectively. Consistently, TXLNA expression was steadily upregulated when SCs were co-cultured with apoptotic germ cells (GCs). Moreover, using siRNA treatment, we found that ablation of endogenous TXLNA significantly impaired the phagocytotic capacity of SCs and thereby resulted in defective spermiogenesis and reduced fertility during the late recovery after testicular heat stress. Mechanistically, upregulation of TXLNA expression by apoptotic GCs was associated with the stabilization of ATP-binding cassette transporter 1 (ABCA1), a transporter-mediated lipid efflux from SCs and influencing male fertility. TXLNA acted as an upstream suppressor of ABCA1 ubiquitination and thus promoted ABCA1 stability and accumulation following GC apoptosis. We further provide in vitro evidence that epidermal growth factor receptor (EGFR)-mediated phosphorylation regulated ABCA1 ubiquitination and was enhanced by TXLNA deficiency during testicular phagocytosis. Taken together, the TXLNA/ABCA1 cascade may serve as an important feedback mechanism to modulate the magnitude of subsequent phagocytotic process of SCs in response to testicular injury.
Collapse
Affiliation(s)
- Y-s Dong
- Department of Neurosurgery, General Hospital of Shenyang Military Area Command, Shenyang 110016, China.,Department of Histology and Embryology, Fourth Military Medical University, Xi'an 710032, China
| | - W-g Hou
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Y Li
- Department of Air Logistics, 463rd Hospital of PLA, Shenyang 110042, China
| | - D-b Liu
- Department of Air Logistics, 463rd Hospital of PLA, Shenyang 110042, China
| | - G-z Hao
- Department of Neurosurgery, General Hospital of Shenyang Military Area Command, Shenyang 110016, China
| | - H-f Zhang
- Department of Neurosurgery, General Hospital of Shenyang Military Area Command, Shenyang 110016, China
| | - J-c Li
- Department of Neurosurgery, General Hospital of Shenyang Military Area Command, Shenyang 110016, China
| | - J Zhao
- Department of Histology and Embryology, Fourth Military Medical University, Xi'an 710032, China
| | - S Zhang
- Department of Gynecology and Obstetrics, Reproductive Medicine Center, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
| | - G-b Liang
- Department of Neurosurgery, General Hospital of Shenyang Military Area Command, Shenyang 110016, China
| | - W Li
- Department of Histology and Embryology, Fourth Military Medical University, Xi'an 710032, China
| |
Collapse
|
18
|
Manku G, Culty M. Dynamic changes in the expression of apoptosis-related genes in differentiating gonocytes and in seminomas. Asian J Androl 2015; 17:403-14. [PMID: 25677133 PMCID: PMC4430938 DOI: 10.4103/1008-682x.146101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 11/24/2014] [Accepted: 11/26/2014] [Indexed: 01/25/2023] Open
Abstract
Apoptosis is an integral part of the spermatogenic process, necessary to maintain a proper ratio of Sertoli to germ cell numbers and provide an adequate microenvironment to germ cells. Apoptosis may also represent a protective mechanism mediating the elimination of abnormal germ cells. Extensive apoptosis occurs between the first and second postnatal weeks, at the point when gonocytes, precursors of spermatogonial stem cells, should have migrated toward the basement membrane of the tubules and differentiated into spermatogonia. The mechanisms regulating this process are not well-understood. Gonocytes undergo phases of proliferation, migration, and differentiation which occur in a timely and closely regulated manner. Gonocytes failing to migrate and differentiate properly undergo apoptosis. Inadequate gonocyte differentiation has been suggested to lead to testicular germ cell tumor (TGCT) formation. Here, we examined the expression levels of apoptosis-related genes during gonocyte differentiation by quantitative real-time polymerase chain reaction, identifying 48 pro- and anti-apoptotic genes increased by at least two-fold in rat gonocytes induced to differentiate by retinoic acid, when compared to untreated gonocytes. Further analysis of the most highly expressed genes identified the pro-apoptotic genes Gadd45a and Cycs as upregulated in differentiating gonocytes and in spermatogonia compared with gonocytes. These genes were also significantly downregulated in seminomas, the most common type of TGCT, compared with normal human testicular tissues. These results indicate that apoptosis-related genes are actively regulated during gonocyte differentiation. Moreover, the down-regulation of pro-apoptotic genes in seminomas suggests that they could represent new therapeutic targets in the treatment of TGCTs.
Collapse
Affiliation(s)
- Gurpreet Manku
- The Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada
| | - Martine Culty
- The Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec, Canada
| |
Collapse
|
19
|
Li W, Fu J, Zhang S, Zhao J, Xie N, Cai G. The proteasome inhibitor bortezomib induces testicular toxicity by upregulation of oxidative stress, AMP-activated protein kinase (AMPK) activation and deregulation of germ cell development in adult murine testis. Toxicol Appl Pharmacol 2015; 285:98-109. [PMID: 25886977 DOI: 10.1016/j.taap.2015.04.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 03/18/2015] [Accepted: 04/04/2015] [Indexed: 01/02/2023]
Abstract
Understanding how chemotherapeutic agents mediate testicular toxicity is crucial in light of compelling evidence that male infertility, one of the severe late side effects of intensive cancer treatment, occurs more often than they are expected to. Previous study demonstrated that bortezomib (BTZ), a 26S proteasome inhibitor used to treat refractory multiple myeloma (MM), exerts deleterious impacts on spermatogenesis in pubertal mice via unknown mechanisms. Here, we showed that intermittent treatment with BTZ resulted in fertility impairment in adult mice, evidenced by testicular atrophy, desquamation of immature germ cells and reduced caudal sperm storage. These deleterious effects may originate from the elevated apoptosis in distinct germ cells during the acute phase and the subsequent disruption of Sertoli-germ cell anchoring junctions (AJs) during the late recovery. Mechanistically, balance between AMP-activated protein kinase (AMPK) activation and Akt/ERK pathway appeared to be indispensable for AJ integrity during the late testicular recovery. Of particular interest, the upregulated testicular apoptosis and the following disturbance of Sertoli-germ cell interaction may both stem from the excessive oxidative stress elicited by BTZ exposure. We also provided the in vitro evidence that AMPK-dependent mechanisms counteract follicle-stimulating hormone (FSH) proliferative effects in BTZ-exposed Sertoli cells. Collectively, BTZ appeared to efficiently prevent germ cells from normal development via multiple mechanisms in adult mice. Employment of antioxidants and/or AMPK inhibitor may represent an attractive strategy of fertility preservation in male MM patients exposed to conventional BTZ therapy and warrants further investigation.
Collapse
Affiliation(s)
- Wei Li
- Department of Human Anatomy, Histology and Embryology, Fourth Military Medical University, Xi'an 710032, PR China
| | - Jianfang Fu
- Department of Endocrinology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, PR China
| | - Shun Zhang
- Reproductive Medicine Center, Department of Gynecology and Obstetrics, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, PR China
| | - Jie Zhao
- Department of Human Anatomy, Histology and Embryology, Fourth Military Medical University, Xi'an 710032, PR China
| | - Nianlin Xie
- Department of Thoracic Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, PR China.
| | - Guoqing Cai
- Department of Gynaecology and Obstetrics, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, PR China.
| |
Collapse
|
20
|
Orazizadeh M, Daneshi E, Hashemitmar M, Absalan F, Khorsandi L. Protective effect of beta-carotene against titanium dioxide nanoparticles induced apoptosis in mouse testicular tissue. Andrologia 2014; 47:816-25. [PMID: 25278478 DOI: 10.1111/and.12336] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2014] [Indexed: 11/27/2022] Open
Abstract
In this study, the effects of beta-carotene (BC) on testicular germ cell apoptosis arising from titanium dioxide nanoparticles (NTiO2 ) have been evaluated. In NTiO2 -treated mice, expression of apoptotic related genes including Bid, FasL, caspase-3 and p38MAPK was significantly increased. Measurement apoptosis using TUNEL method showed significant increase in apoptotic index of germ cells in NTiO2 -treated mice (P < 0.05). TUNEL assessments showed that the increase of apoptotic index of testicular germ cells in NTiO2 -treated mice was reversed by BC. Beta-carotene pre-treatment could also effectively attenuate the expression of apoptotic related genes. The application of BC may serve as a beneficial medication to protect germ cells against apoptosis induced by nanoparticles and be helpful for male fertility.
Collapse
Affiliation(s)
- M Orazizadeh
- Cell & Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Anatomical Sciences Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - E Daneshi
- Cell & Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - M Hashemitmar
- Cell & Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Anatomical Sciences Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - F Absalan
- Cell & Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - L Khorsandi
- Cell & Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Anatomical Sciences Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| |
Collapse
|
21
|
Starvation is more efficient than the washing technique for purification of rat Sertoli cells. In Vitro Cell Dev Biol Anim 2014; 50:723-30. [PMID: 24789729 DOI: 10.1007/s11626-014-9762-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 04/09/2014] [Indexed: 12/16/2022]
Abstract
Sertoli cells (SCs), one of the most important components of seminiferous tubules, are vital for normal spermatogenesis and male fertility. In recent years, numerous in vitro studies have shown the potential and actual activities of SCs. However, pure SCs are necessary for various in vitro studies. In this study, we have evaluated the efficiency of the starvation method for SC purification as compared with the washing method. Seminiferous tubule-derived cells (STDCs) of rats' testes underwent two different techniques for SC purification. In the first group (washing group), the medium was changed every 3-4 d, and cells were washed twice with phosphate-buffered saline that lacked CaC12 and MgSO4 (PBS(-)) before the addition of fresh medium. In the second group (starvation), the medium was changed every 7-8 d. Primary culture (P0), passage 1 (P1), and passage 2 (P2) cells were analyzed for the expression of SC-specific genes, vimentin, Wilm's tumor 1 (WT1), germ cell gene (vasa), Leydig cell marker, 17beta-hydroxysteroid dehydrogenase type 3 (Hsd17b3), and a marker of peritubular myoid cells, alpha smooth muscle actin (αSma), by reverse transcriptase polymerase chain reaction (RT-PCR) and real-time RT-PCR. Gene expression analysis showed that P0 cells expressed all tested genes except Hsd17b3. The starvation method caused significant downregulation of vasa and αSma expression in P0, P1, and P2 cells, whereas vimentin and WT1 were upregulated. In contrast, the washing method was less effective than the starvation method for the removal of germ and pretubular myoid cells (p < 0.001). Totally, the results have revealed that although washing is the only common technique for elimination of contaminant cells in SC cultures, starvation has a stronger effect and is a suitable, affordable technique for SC purification. We propose that starvation is an efficient, inexpensive method that can be used for purification of SCs in animal species.
Collapse
|
22
|
Effect of beta-carotene on titanium oxide nanoparticles-induced testicular toxicity in mice. J Assist Reprod Genet 2014; 31:561-8. [PMID: 24515782 DOI: 10.1007/s10815-014-0184-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 01/28/2014] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVE This study evaluated the protective effect of beta-carotene (BC) on titanium oxide nanoparticle (TNP) induced spermatogenesis defects in mice. MATERIALS AND METHODS Thirty-two NMRI mice were randomly divided into four groups. BC group received 10 mg/kg of BC for 35 days. TNP group received 300 mg/kg TNP for 35 days. TNP+BC group initially received 10 mg/kg BC for 10 days and was followed by concomitant administration of 300 mg/kg TNP for 35 days. Control group received only normal saline for 35 days. Epididymal sperm parameters, testicular histopathology, spermatogenesis assessments and testosterone assay were performed for evaluation of the TNP and BC effects on testis. RESULTS Serum testosterone levels were markedly decreased in TNP-intoxicated mice. Epididymal sperm parameters including sperm number, motility and percentage of abnormality were significantly changed in TNP-intoxicated mice (p < 0.01). Histopathological criteria such as epithelial vacuolization, sloughing of germ cells and detachment were significantly increased in TNP-intoxicated mice (p < 0.001). BC+TNP treatment significantly prevented these changes (p < 0.05). BC also significantly elevates testosterone levels in BC+TNP group compared to TNP-treated mice (p < 0.01). DISCUSSION AND CONCLUSION The results of this study demonstrated that BC improved the spermatogenesis defects in TNP-treated mice. BC had a potent protective effect against the testicular toxicity and might be clinically useful.
Collapse
|
23
|
|
24
|
Mohammadnejad D, Abedelahi A, Rashtbar M. Protective Role of GnRH Antagonist on Chemotherapy-induced Spermatogenesis Disorder: A Morphological Study. Adv Pharm Bull 2013; 3:323-8. [PMID: 24312855 DOI: 10.5681/apb.2013.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 03/14/2013] [Accepted: 03/16/2013] [Indexed: 11/17/2022] Open
Abstract
PURPOSE Anti cancer drugs is one of the most important chemotherapeutic factors which can influence spermatogenesis process and germinal epithelium. Since dividing cells are mainly affected by anticancer drugs, the aim of the present study is to investigate the preventive effect of GnRH antagonist on spermatogenic defect produced by anticancer drugs. METHODS In the present study thirty adult male mice aging 6-8 weeks were divided into 3 groups as: Control, Experimental 1 and Experimental 2. Experimental 1 group received Cisplatin for 5 days as 2.5 mg/kg intraperitoneally and Experimental 2 group received 0.25 mg/kg cetrorelix (GnRH antagonist) one week before cisplatin treatment and continued for 3 weeks. The mice in all groups were sacrificed 35 days after the last injection and testis specimens were fixed in boueins, formaldehyde fixative and 2.5% Glutaraldehide then prepared for light and electron microscopic examination. RESULTS Light microscopy (LM) study showed that the number of spermatogonial cells, thickness of germinal epithelium, was decreased in Experimental 1group. Electron microscopy revealed that in this group several intercellular spaces appeared between spermatogenic cells and secretory granules in interstitial cells was increased. There were several vacuolated mitochondria and destroyed organelles in spermatogonial cells but in Experimental 2 group condition was similar to control group. CONCLUSION These results indicate that the cetrorelix administration before cancer treatment may protect germinal epithelium against side effects of cisplatin.
Collapse
|
25
|
Liang Y, Dong Y, Zhao J, Li W. YES1 activation elicited by heat stress is anti-apoptotic in mouse pachytene spermatocytes. Biol Reprod 2013; 89:131. [PMID: 24132961 DOI: 10.1095/biolreprod.113.112235] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Deregulated expression of protein tyrosine phosphorylation has been implicated in testicular response to different stimuli. Herein, YES1, a nonreceptor protein tyrosine kinase, was found to be significantly up-regulated in pachytene spermatocytes (PS) during early recovery from a transient testicular heat stress. Coculture of PS with Sertoli cells (SCs) could enhance the hyperthermia-induced YES1 activation, indicative of a positive regulation of the paracrine signaling. Moreover, SU6656, a selective YES1 inhibitor, was shown to effectively block YES1 activity, thereafter resulting in a dramatic increase of heat stress-induced apoptosis in primary cultured PS. Mechanistically, the antiapoptotic effect of YES1 activation in response to testicular heat insult may mediate via the regulation of extracellular signal-regulated kinase (ERK)/metastasis-associated 1 (MTA1) cascade. From a clinical standpoint, a notably higher level of YES1 expression was observed in the pathological testis from varicocele patients as compared to a negligible staining in the control group. Taken together, our present results provide the first evidence that the YES1/ERK/MTA1/p53 cascade may serve as a naturally occurring, indispensable self-defensive mechanism maintaining apoptotic balance during meiotic heat stress. Our study may have also partially answered the question of how activation of signal pathways at the cell membrane surface interacts with the key regulatory events occurring in the nucleus during testicular heat shock.
Collapse
Affiliation(s)
- Yuan Liang
- Department of Pathology and Pathophysiology, Fourth Military Medical University, Xi'an, People's Republic of China
| | | | | | | |
Collapse
|
26
|
Talebi AR, Khorsandi L, Moridian M. The effect of zinc oxide nanoparticles on mouse spermatogenesis. J Assist Reprod Genet 2013; 30:1203-9. [PMID: 23949131 DOI: 10.1007/s10815-013-0078-y] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Accepted: 08/05/2013] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE To evaluate the effects of zinc oxide nanoparticles on mouse spermatogenesis. METHODS Thirty two adult male NMRI mice were used. Experimental Groups (ZNP-1-ZNP-3) received one of the following treatments daily for 35 days: 5, 50 and 300 mg/kg zinc oxide nanoparticles respectively. Control group received only distilled water. Epididymal sperm parameters, testicular histopathology, morphometric analysis and spermatogenesis assessments were performed for evaluation of the zinc oxide nanoparticles effects on testis. RESULTS Epididymal sperm parameters including sperm number, motility and percentage of abnormality were significantly changed in 50 and 300 mg/kg zinc oxide nanoparticles treated mice (p < 0.01). Histopathological criteria such as epithelial vacuolization, sloughing of germ and detachment were significantly increased in 50 and 300 mg/kg zinc oxide nanoparticles treated mice (p < 0.001). 300 mg/kg zinc oxide nanoparticles induced formation of multinucleated giant cells in the germinal epithelium. 50 and 300 mg/kg zinc oxide nanoparticles also caused a significant decrease in seminiferous tubule diameter, seminiferous epithelium height and maturation arrest (p < 0.001). CONCLUSION Zinc oxide nanoparticles act as testicular toxicant and further studies are needed to establish its mechanism of action upon spermatogenesis.
Collapse
Affiliation(s)
- Ali Reza Talebi
- Research and Clinical Center for Infertility, Shahid Sadoughi, University of Medical Sciences, Yazd, Iran
| | | | | |
Collapse
|
27
|
Seco-Rovira V, Beltrán-Frutos E, Ferrer C, Sánchez-Huertas MM, Madrid JF, Saez FJ, Pastor LM. Lectin Histochemistry as a Tool to Identify Apoptotic Cells in the Seminiferous Epithelium of Syrian Hamster (Mesocricetus auratus) Subjected to Short Photoperiod. Reprod Domest Anim 2013; 48:974-83. [DOI: 10.1111/rda.12196] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 05/15/2013] [Indexed: 02/05/2023]
Affiliation(s)
- V Seco-Rovira
- Department of Cell Biology and Histology, Medical School, IMIB, Regional Campus of International Excellence ‘Campus Mare Nostrum’; University of Murcia; Murcia Spain
| | - E Beltrán-Frutos
- Department of Cell Biology and Histology, Medical School, IMIB, Regional Campus of International Excellence ‘Campus Mare Nostrum’; University of Murcia; Murcia Spain
| | - C Ferrer
- Department of Cell Biology and Histology, Medical School, IMIB, Regional Campus of International Excellence ‘Campus Mare Nostrum’; University of Murcia; Murcia Spain
| | - MM Sánchez-Huertas
- Department of Cell Biology and Histology, Medical School, IMIB, Regional Campus of International Excellence ‘Campus Mare Nostrum’; University of Murcia; Murcia Spain
| | - JF Madrid
- Department of Cell Biology and Histology, Medical School, IMIB, Regional Campus of International Excellence ‘Campus Mare Nostrum’; University of Murcia; Murcia Spain
| | - FJ Saez
- Department of Cell Biology and Histology UFI11/44, School of Medicine and Dentistry; University of the Basque Country, UPV/EHU; Leioa Spain
| | - LM Pastor
- Department of Cell Biology and Histology, Medical School, IMIB, Regional Campus of International Excellence ‘Campus Mare Nostrum’; University of Murcia; Murcia Spain
| |
Collapse
|
28
|
Hexavalent chromium at low concentration alters Sertoli cell barrier and connexin 43 gap junction but not claudin-11 and N-cadherin in the rat seminiferous tubule culture model. Toxicol Appl Pharmacol 2013; 268:27-36. [DOI: 10.1016/j.taap.2013.01.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 01/17/2013] [Accepted: 01/18/2013] [Indexed: 11/20/2022]
|
29
|
Zhang S, Zeng Y, Qu J, Luo Y, Wang X, Li W. Endogenous EGF maintains Sertoli germ cell anchoring junction integrity and is required for early recovery from acute testicular ischemia/reperfusion injury. Reproduction 2013; 145:177-89. [DOI: 10.1530/rep-12-0336] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Administration of exogenous epidermal growth factor (EGF) improves testicular injury after acute ischemia–reperfusion (IR) stress, but the molecular basis is poorly understood. The role of endogenous EGF in testicular recovery and the underlying intracellular signaling pathways involved were herein investigated. In mice, testicular IR injury significantly enhanced the expression level of endogenousEgfat the very beginning of reperfusion. Expression of EGF receptor (Egfr(ErbB1)) was accordingly upregulated 3 h after reperfusion. Deprivation of majority of circulated EGF by sialoadenectomy aggravated testicular detriment (especially in pachytene spermatocytes), enhanced germ cell apoptosis, and thereafter resulted in impaired meiotic differentiation after IR insult. Mechanistically, endogenous EGF signaling appeared to be indispensable for the proper maintenance of Sertoli germ cells anchoring junction dynamics during the early testicular recovery. We also provided thein vitroevidences in a well-established rat Sertoli germ cell co-cultures model that the pro-survival effect of endogenous EGF on germ cells in response to testicular IR insult is mediated, at least in part, via the phosphatidylinositol 3-kinase/pAkt pathway. Collectively, our results suggest that the augment of endogenous EGF during the early testicular recovery may act on top of an endocrinous cascade orchestrating the intimate interactions between Sertoli cells and germ cells and may operate as indispensable defensive mechanism in response to testicular IR stress. Future studies in this field would shed light on this complicated pathogenesis.
Collapse
|
30
|
Zhang H, Cai C, Wu Y, Ye B, Han L, Shou X, Wang M, Wang J, Jia X. Toxic effects of microcystin-LR on the reproductive system of male Rana nigromaculata in vitro. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2013; 126:283-290. [PMID: 23084047 DOI: 10.1016/j.aquatox.2012.09.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 09/17/2012] [Accepted: 09/22/2012] [Indexed: 06/01/2023]
Abstract
This study aims to demonstrate that microcystin-LR (MC-LR) has toxic effects on the reproductive system of male Rana nigromaculata in vitro. R. nigromaculata were treated with 0, 0.1, 1, 10, and 100 nmol/L of MC-LR for 6 h. Results show that exposure to 1 nmol/L to 100 nmol/L of MC-LR decreased sperm motility and number of sperm cells and increased the sperm abnormality rate, whose values were significantly different from those of the control (P<0.01). Moreover, the same dosage of MC-LR increased reactive oxygen species production and malondialdehyde content. At the same time, antioxidant enzyme (catalase and glutathione S-transferase) activity and glutathione reduced content rapidly increased, whereas antioxidant enzyme superoxide dismutase activity significantly decreased. These results imply that the defense system of the testes quickly responds to oxidative stress. Ultrastructural observation shows distention of the mitochondria, endoplasmic reticulum, and Golgi apparatus and changes in the mitochondrial matrix color, cristae number, and morphology. Moreover, using real-time PCR, increased relative expressions of P450 aromatase and SF-1 genes were observed. The results demonstrate for the first time that MC-LR could induce toxicity in the male reproductive system of R. nigromaculata. The findings in this research will provide more insights into the relationships between aquatic microcystins and amphibians.
Collapse
Affiliation(s)
- Hangjun Zhang
- Department of Environmental Sciences, Hangzhou Normal University, Xiasha Gaojiao Dongqu, Zhejiang Province, China
| | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Li M, Liu Z, Zhuan L, Wang T, Guo S, Wang S, Liu J, Ye Z. Effects of apocynin on oxidative stress and expression of apoptosis-related genes in testes of diabetic rats. Mol Med Rep 2013; 7:47-52. [PMID: 23076300 DOI: 10.3892/mmr.2012.1132] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 07/13/2012] [Indexed: 11/05/2022] Open
Abstract
Reactive oxygen species (ROS) are important in the development of diabetic testicular dysfunction. Overproduction of ROS promotes the process of apoptosis, which shows that there is a crosstalk between oxidative stress and apoptosis. Recent research has suggested that NADPH oxidase is the main source of ROS. In this study, we investigated whether the NADPH oxidase inhibitor, apocynin, can improve diabetes‑induced testicular dysfunction by suppressing oxidative stress. The streptozocin (STZ)-induced diabetic rats were administered apocynin, and the mRNA and protein expression of Bax, Bcl-2, p47phox and p67phox was examined by real-time PCR (RT-PCR) and western blot analysis. Production of ROS was measured by thiobarbituric acid reactive substances (TBARS) assay. Terminal-deoxynucleoitidyl transferase mediated nick end-labeling (TUNEL) assay was used to detect apoptosis and ELISA was used to detect total testosterone levels. The mRNA and protein expression of Bcl-2 was significantly reduced, and that of Bax, p47phox and p67phox was significantly increased in the diabetic rats compared to the control group. Apocynin significantly increased the expression of Bcl-2 and decreased the expression of Bax, p47phox and p67phox at both the mRNA and protein levels. The production of ROS and apoptotic cells significantly increased in the diabetic group compared to the control group. Apocynin significantly reduced the production of ROS and apoptotic cells and increased the total testosterone level. In conclusion, apocynin is capable of ameliorating testicular dysfunction.
Collapse
Affiliation(s)
- Mingchao Li
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, PR China
| | | | | | | | | | | | | | | |
Collapse
|
32
|
Sun H, Yang B, Zhu C, Liu R, Wang H, Li W. Presence of metastasis-associated protein 1 in Sertoli cells is required for proper contact between Sertoli cells and adjacent germ cells. Urology 2013; 81:66-73. [PMID: 23010341 DOI: 10.1016/j.urology.2012.07.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Revised: 07/07/2012] [Accepted: 07/24/2012] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To investigate whether the normal expression of metastasis-associated protein 1 (MTA1) in Sertoli cells (SCs) is associated with adjacent germ cells (GCs) and to provide the functional relevance of MTA1 in this somatic cell. METHODS The expression pattern of MTA1 in the SCs of impaired human spermatogenesis was determined using immunohistochemistry. The effect of the depletion of GCs on the expression of MTA1 in isolated SCs was evaluated using reverse transcriptase polymerase chain reaction in murine testes treated with busulphan. Finally, using multiple assays, the functional investigation of MTA1 by its specific knockdown was performed in SC-GC co-cultures. RESULTS SCs were negatively immunolabeled in the tubules with impaired spermatogenesis. Depletion of murine GCs by treatment with busulphan resulted in a dramatic decrease of the MTA1 transcripts level in the isolated SCs on the 15th day of treatment and thereafter had totally abolished MTA1 expression by the 30th day of treatment, respectively. The addition of isolated round spermatids into SC culture could partially elevate MTA1 expression in the latter. Furthermore, MTA1 is crucial to maintain the GC nursery function and normal anchoring junction formation in SCs because ablation of MTA1 by siRNA induced extensive defects of genes related to SC homeostasis. CONCLUSION We propose a novel role for SC-expressing MTA1, which is determined by the presence of surrounding GCs, in mediating the crosstalk between SCs and GCs by influencing a broad spectrum of gene changes.
Collapse
Affiliation(s)
- Hang Sun
- Department of Urology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | | | | | | | | | | |
Collapse
|
33
|
Brilhante O, Okada FK, Sasso-Cerri E, Stumpp T, Miraglia SM. Late morfofunctional alterations of the Sertoli cell caused by doxorubicin administered to prepubertal rats. Reprod Biol Endocrinol 2012; 10:79. [PMID: 22967030 PMCID: PMC3502149 DOI: 10.1186/1477-7827-10-79] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Accepted: 08/27/2012] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Doxorubicin is a potent chemotherapeutic drug used against a variety of cancers. It acts through interaction with polymerases and topoisomerase II and free radical production. Doxorubicin activity is not specific to cancer cells and can also damage healthy cells, especially those undergoing rapid proliferation, such as spermatogonia. In previous studies our group showed that etoposide, another topoisomarese II poison, causes irreversible damage to Sertoli cells. Thus, the aim of this study was to address the effects of doxorubicin on Sertoli cell morphology and function and on the seminiferous epithelium cycle when administered to prepubertal rats. METHODS Prepubertal rats received the dose of 5 mg/Kg of doxorubicin, which was fractioned in two doses: 3 mg/Kg at 15dpp and 2 mg/Kg at 22 dpp. The testes were collected at 40, 64 and 127 dpp, fixed in Bouin's liquid and submitted to transferrin immunolabeling for Sertoli cell function analysis. Sertoli cell morphology and the frequency of the stages of the seminiferous epithelium cycle were analyzed in PAS + H-stained sections. RESULTS The rats treated with doxorubicin showed reduction of transferrin labeling in the seminiferous epithelium at 40 and 64 dpp, suggesting that Sertoli cell function is altered in these rats. All doxorubicin-treated rats showed sloughing and morphological alterations of Sertoli cells. The frequency of the stages of the seminiferous epithelium cycle was also affected in all doxorubicin-treated rats. CONCLUSIONS AND DISCUSSION These data show that doxorubicin administration during prepuberty causes functional and morphological late damage to Sertoli cells; such damage is secondary to the germ cell primary injury and contributed to enhance the spermatogenic harm caused by this drug. However, additional studies are required to clarify if there is also a direct effect of doxorubicin on Sertoli cells producing a primary damage on these cells.
Collapse
Affiliation(s)
- Otávio Brilhante
- Centre for Health and Rural Technology, Academic Unit of Veterinary Medicine, Federal University of Campina Grande, Patos, Paraíba, Brazil
| | - Fatima K Okada
- Department of Morphology and Genetics, Developmental Biology Laboratory, Federal University of São Paulo. Vila Clementino, São Paulo, SP, Brazil
| | - Estela Sasso-Cerri
- Department of Morphology, Laboratory of Histology and Embryology, Dental School of São Paulo State University (UNESP), Araraquara, SP, Brazil
| | - Taiza Stumpp
- Department of Morphology and Genetics, Developmental Biology Laboratory, Federal University of São Paulo. Vila Clementino, São Paulo, SP, Brazil
| | - Sandra M Miraglia
- Department of Morphology and Genetics, Developmental Biology Laboratory, Federal University of São Paulo. Vila Clementino, São Paulo, SP, Brazil
| |
Collapse
|
34
|
Expression of estrogen receptors-α in testicular biopsies from nonobstructive azoospermic patients. ACTA ACUST UNITED AC 2012. [DOI: 10.1097/01.ehx.0000418063.67260.66] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
35
|
Mirhoseini M, Mohamadpour M, Khorsandi L. Toxic effects of Carthamus tinctorius L. (Safflower) extract on mouse spermatogenesis. J Assist Reprod Genet 2012; 29:457-61. [PMID: 22395857 PMCID: PMC3348278 DOI: 10.1007/s10815-012-9734-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 02/20/2012] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVE To evaluate the effects of aqueous extract of Carthamus tinctorius L., also named safflower, on mouse spermatogenesis. METHODS Sixteen adult male NMRI mice were used. Experimental group received Carthamus tinctorius L. extract at the dose of 200 mg/kg for 35 consecutive days and control group received only distilled water. Testicular histopathology, morphometric analysis and spermatogenesis assessments were performed for evaluation of the Carthamus tinctorius L. extract effects on testis. RESULTS Histopathological criteria such as epithelial vacuolization, sloughing of germ and detachment were significantly decreased in Carthamus tinctorius L. treated mice (p < 0.001). Carthamus tinctorius L. extract induced formation of multinucleated giant cells in the germinal epithelium. Carthamus tinctorius L. extract also caused a significant decrease in seminiferous tubule diameter, seminiferous epithelium height and maturation arrest (p < 0.001). CONCLUSION Carthamus tinctorius L. extract has toxic effects on mouse testicular tissue, and recommended to use it with caution if there is a reproductive problem.
Collapse
Affiliation(s)
- Mehri Mirhoseini
- Cell & molecular research center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, P. O. Box: 61335, Ahvaz, Iran
| | - Masoomeh Mohamadpour
- Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, P. O. Box: 61335, Ahvaz, Iran
| | - Layasadat Khorsandi
- Cell & molecular research center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, P. O. Box: 61335, Ahvaz, Iran
| |
Collapse
|
36
|
Sun Y, Lin Y, Li H, Liu J, Sheng X, Zhang W. 2,5-Hexanedione induces human ovarian granulosa cell apoptosis through BCL-2, BAX, and CASPASE-3 signaling pathways. Arch Toxicol 2011; 86:205-15. [PMID: 21901545 DOI: 10.1007/s00204-011-0745-7] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Accepted: 08/11/2011] [Indexed: 11/29/2022]
Abstract
Studies have shown that 2,5-hexanedione (2,5-HD) is the main active metabolite of n-hexane in the human body. The toxicity of n-hexane and 2,5-hexanedione has been extensively researched, but toxicity to the reproductive system, especially the impact on female reproductive function, has been less frequently reported. In this study, we exposed human ovarian granulosa cells to 0, 16, 64, and 256 μM 2,5-HD in vitro for 24 h. Through hematoxylin-eosin (HE) staining, Hoechst 33342 staining, transmission electron microscopy, and flow cytometry using FITC-Annexin V/PI double staining, 2,5-HD was demonstrated to cause significant apoptosis of human ovarian granulosa cells in a dose-dependent manner. As part of our continuing studies, we investigated the underlying apoptosis mechanism of human ovarian granulosa cells exposed to 0, 16, 64, and 256 μM 2,5-HD in vitro for 24 h. Real-time quantitative PCR and Western blot analysis were used to detect changes in the expression of the apoptosis-related BCL-2 family (BCL-2, BAX) and CASPASE family (CASPASE-3) with increasing 2,5-HD concentration. The results showed that with increasing 2,5-HD doses, the expression of BCL-2 decreased. However, a marked dose-dependent increase in the expression of BAX and active CASPASE-3 (p17) was observed in human ovarian granulosa cells. These results suggest that the mechanisms of 2,5-HD causing increased apoptosis in human ovarian granulosa cells might be through BCL-2, BAX, and CASPASE-3 signaling pathways.
Collapse
Affiliation(s)
- Yan Sun
- Fujian Province Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Fuzhou, 350108, People's Republic of China
| | | | | | | | | | | |
Collapse
|
37
|
Agarwal A, Sekhon LH. Oxidative stress and antioxidants for idiopathic oligoasthenoteratospermia: Is it justified? Indian J Urol 2011; 27:74-85. [PMID: 21716893 PMCID: PMC3114591 DOI: 10.4103/0970-1591.78437] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Oxidative stress contributes to defective spermatogenesis and the poor quality of sperm associated with idiopathic male factor infertility. The aim of this study was to review the current literature on the effects of various types of antioxidant supplements in patients to improve fertilization and pregnancy rates in subfertile males with idiopathic oligoasthenoteratozoospermia (iOAT). Review of recent publications through PubMed and the Cochrane database. Oxidative stress is implicated in impaired spermatogenesis leading to the poor semen parameters and increased DNA damage and apoptosis in iOAT. Strategies to modulate the level of oxidative stress within the male reproductive tract include the use of oral antioxidant compounds to reinforce the body's defence against oxidative damage. In our evaluation, carnitines were considered the most established pharmacotherapeutic agent to treat iOAT, as evidence and data concerning carnitine supplementation have been shown to be most consistent and relevant to the population of interest. Other therapies, such as combined vitamin E and C therapy, are still considered controversial as vitamin C can act as a pro-oxidant in certain instances and the results of randomized controlled trials have failed to show significant benefit to sperm parameters and pregnancy rates. There is a need for further investigation with randomized controlled studies to confirm the efficacy and safety of antioxidant supplementation in the medical treatment of idiopathic male infertility as well as the need to determine the dosage required to improve semen parameters, fertilization rates and pregnancy outcomes in iOAT.
Collapse
Affiliation(s)
- Ashok Agarwal
- Center for Reproductive Medicine, Cleveland Clinic, Cleveland, USA
| | | |
Collapse
|
38
|
Orazizadeh M, Khorsandi LS, Hashemitabar M. Toxic effects of dexamethasone on mouse testicular germ cells. Andrologia 2010; 42:247-53. [DOI: 10.1111/j.1439-0272.2009.00985.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
39
|
Yamasaki H, Sandrof MA, Boekelheide K. Suppression of radiation-induced testicular germ cell apoptosis by 2,5-hexanedione pretreatment. I. Histopathological analysis reveals stage dependence of attenuated apoptosis. Toxicol Sci 2010; 117:449-56. [PMID: 20616207 DOI: 10.1093/toxsci/kfq203] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In the testis, developing germ cells are dependent on supportive physical and paracrine interactions with Sertoli cells. The intimate nature of this relationship is demonstrated by the fact that a toxic insult compromising the stability of Sertoli cells will have deleterious effects on the associated germ cells. 2,5-Hexanedione (HD) and x-radiation (x-ray) are testicular toxicants, each with a unique cellular target. HD exposure disrupts microtubule function in Sertoli cells, and x-ray exposure causes double-strand breaks in the DNA of germ cells. Despite their differing modes of action, exposure to either toxicant has the similar ultimate effect of increased germ cell apoptosis. In this study, adult male F344 rats were exposed to 1% HD in the drinking water for 18 days with or without coexposure to 2 or 5 Gy x-ray 12 h prior to necropsy. Incidence of retained spermatid heads was increased in the HD and coexposure groups. Germ cell apoptosis was significantly increased in the x-ray and coexposure groups. There was a striking stage-dependent attenuation of apoptosis with coexposure compared with x-ray alone. Detailed histopathological analysis revealed a significant suppression of x-ray-induced germ cell apoptosis by HD pretreatment in stages I-VI of the seminiferous cycle, most noticeably at stages II/III. We hypothesize either that subacute HD pretreatment compromises the ability of the Sertoli cells to eliminate x-ray-damaged germ cells or that germ cells are more resistant to x-ray-induced damage, having adapted to a less supportive environment.
Collapse
Affiliation(s)
- Hideki Yamasaki
- Department of Pathology and Laboratory Medicine, Brown University, Providence, Rhode Island 02912, USA
| | | | | |
Collapse
|
40
|
Karacaoğlu E, Selmanoğlu G. Effects of heat-induced food contaminant furan on reproductive system of male rats from weaning through postpuberty. Food Chem Toxicol 2010; 48:1293-301. [DOI: 10.1016/j.fct.2010.02.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Revised: 02/15/2010] [Accepted: 02/18/2010] [Indexed: 12/29/2022]
|
41
|
Methoxychlor induces apoptosis via mitochondria- and FasL-mediated pathways in adult rat testis. Chem Biol Interact 2010; 185:110-8. [DOI: 10.1016/j.cbi.2010.03.014] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Revised: 03/03/2010] [Accepted: 03/05/2010] [Indexed: 12/25/2022]
|
42
|
Abstract
Apoptosis, the best known form of programmed cell death, is tightly regulated by a number of sensors, signal transducers and effectors. Apoptosis is mainly active during embryonic development, when deletion of redundant cellular material is required for the correct morphogenesis of tissues and organs; moreover, it is essential for the maintenance of tissue homeostasis during cell life. Cells also activate apoptosis when they suffer from various insults, such as damage to DNA or to other cellular components, or impairment of basic processes, such as DNA replication and DNA repair. Removal of damaged cells is fundamental in maintaining the health of organisms. In addition, apoptosis induction following DNA damage is exploited to kill cancer cells. In this chapter we will review the main features of developmental and induced apoptosis.
Collapse
|
43
|
Kaisman-Elbaz T, Sekler I, Fishman D, Karol N, Forberg M, Kahn N, Hershfinkel M, Silverman WF. Cell death induced by zinc and cadmium is mediated by clusterin in cultured mouse seminiferous tubules. J Cell Physiol 2009; 220:222-9. [DOI: 10.1002/jcp.21754] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
44
|
Xiong Q, Xie P, Li H, Hao L, Li G, Qiu T, Liu Y. Involvement of Fas/FasL system in apoptotic signaling in testicular germ cells of male Wistar rats injected i.v. with microcystins. Toxicon 2009; 54:1-7. [DOI: 10.1016/j.toxicon.2009.01.035] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
45
|
Rey F, González M, Zayas MA, Stoker C, Durando M, Luque EH, Muñoz-de-Toro M. Prenatal exposure to pesticides disrupts testicular histoarchitecture and alters testosterone levels in male Caiman latirostris. Gen Comp Endocrinol 2009; 162:286-92. [PMID: 19364509 DOI: 10.1016/j.ygcen.2009.03.032] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2008] [Revised: 03/21/2009] [Accepted: 03/30/2009] [Indexed: 11/23/2022]
Abstract
The increased use of agrochemical pesticides, such as atrazine (ATZ) and endosulfan (END), may have a significant impact on ecosystem health and biodiversity. The aim of this study was to investigate the consequences of in ovum exposure to ATZ and END on Caiman latirostris gonadal histo-functional features. Caiman eggs were collected from environmentally pristine areas and incubated in controlled conditions at male producing temperature (33 degrees C). At stage 20 of embryonic development, the sensitive stage for gonadal sex determination, eggs were exposed to one dose of either END or ATZ. Gonadal histo-morphology was examined in caiman hatchlings and serum levels of testosterone were measured. Regardless of treatment condition, all eggs incubated at 33 degrees C resulted in male hatchlings. Tortuous seminiferous tubules with increased perimeter, disrupted distribution of peritubular myoid cells (desmin positive), and emptied tubular lumens characterized the testes of pesticide-exposed caiman. An imbalance between proliferative activity and cell death was observed in the testes of caiman exposed to the higher doses of END, mainly due to a high frequency of apoptosis in intratubular cells. This altered cell turnover was associated with decreased testosterone levels. Prenatal exposure to only one dose of END and ATZ disrupted neonatal male gonadal histo-functional features. Alterations described here could have detrimental effects on the sexual maturation of the caiman and, ultimately, on the success of male caiman reproduction.
Collapse
Affiliation(s)
- Florencia Rey
- Laboratorio de Endocrinología y Tumores Hormonodependientes, School of Biochemistry and Biological Sciences, Universidad Nacional del Litoral, Casilla de Correo 242, Santa Fe 3000, Argentina
| | | | | | | | | | | | | |
Collapse
|
46
|
Stereological study of the effects of vitamin E on testis structure in rats treated with para-nonylphenol. Asian J Androl 2009; 11:508-16. [PMID: 19561637 DOI: 10.1038/aja.2009.29] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
This study was organized to see whether vitamin E, as a strong antioxidant, could affect the abnormalities of testis structure caused by para-nonylphenol (p-NP) during its development. A total of 32 female Wistar rats after mating were divided into four groups (n = 8): control, vitamin E (100 mg kg(-1) per day), p-NP (250 mg kg(-1) per day) and p-NP + vitamin E. The rats were treated from the seventh day of pregnancy till the twenty-first day. After weaning, the male pups were divided into the same groups and were treated orally for 90 days. Finally, the right testis was fixed, processed, stained and studied using stereological methods. The weight and volume of testis, volume of seminiferous tubules and its diameter, thickness of the basement membrane, height of the germinal epithelium, total number of types A and B spermatogonia, spermatocyte, spermatid and Sertoli cells were significantly reduced in p-NP group when compared with other groups. Co-administration of vitamin E and p-NP compensated for the adverse effects of p-NP on the above parameters. In addition, treatment with only vitamin E caused a significant increase in diameter, basement membrane thickness and height of germinal epithelium, number of spermatogonia and spermatocytes. Co-administration of vitamin E with p-NP could prevent the adverse effects of p-NP on the testis structure during its development.
Collapse
|
47
|
Ito L, Takahashi C, Yamashita M, Strüssmann C. Warm Water Induces Apoptosis, Gonadal Degeneration, and Germ Cell Loss in Subadult PejerreyOdontesthes bonariensis(Pisces, Atheriniformes). Physiol Biochem Zool 2008; 81:762-74. [DOI: 10.1086/590219] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
48
|
Tang XY, Zhang Q, Dai DZ, Ying HJ, Wang QJ, Dai Y. Effects of strontium fructose 1,6-diphosphate on expression of apoptosis-related genes and oxidative stress in testes of diabetic rats. Int J Urol 2008; 15:251-6. [PMID: 18304222 DOI: 10.1111/j.1442-2042.2007.01980.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To investigate the effects of strontium fructose 1,6-diphosphate (FDP-Sr) on testicular dysfunction induced by diabetes. METHODS Diabetes was induced by a single injection of streptozotocin (65 mg/kg, i.p.). After 28 days, therapy with three doses (50, 100, and 200 mg/kg per day, p.o.) of FDP-Sr was carried out for another 4 weeks. RESULTS The rats exhibited morphological lesions of testes and significant decreases in serum testosterone levels after 2 months of diabetes. Testicular tissues of diabetic rats showed significantly increased malondialdehyde levels and declined glutathione peroxidase activity. Meanwhile, augmented DNA fragmentation was observed, along with downregulated Bcl-2 and upregulated Bax expressions at both mRNA and protein levels. FDP-Sr showed significant antioxidant effects in both in vitro and in vivo experiments, and significantly relieved apoptosis and the decline of serum testosterone caused by diabetes. CONCLUSIONS Testicular injury and apoptosis induced by diabetes are partially attributed to the augmented oxidative stress in testicular tissue. FDP-Sr indirectly alleviates these pathologic alterations by suppressing the generation of reactive oxygen species.
Collapse
Affiliation(s)
- Xiao-Yun Tang
- Research Division of Pharmacology, China Pharmaceutical University, Nanjing, China
| | | | | | | | | | | |
Collapse
|
49
|
El-Domyati MM, Al-Din ABM, Barakat MT, El-Fakahany HM, Xu J, Sakkas D. Deoxyribonucleic acid repair and apoptosis in testicular germ cells of aging fertile men: the role of the poly(adenosine diphosphate-ribosyl)ation pathway. Fertil Steril 2008; 91:2221-9. [PMID: 18440520 DOI: 10.1016/j.fertnstert.2008.03.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2007] [Revised: 03/09/2008] [Accepted: 03/11/2008] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To explore the relationship between men's age and DNA damage repair proteins related to apoptosis in human testicular germ cells. DESIGN Retrospective case-control study. SETTING Academic institutions. PATIENT(S) Testicular specimens were obtained from 22 fertile volunteers aged 20-82 years. INTERVENTION(S) Deoxyribonucleic acid repair markers were assessed using immunohistochemical staining for the cell proliferation marker [proliferating cell nuclear antigen (PCNA)]; DNA repair markers [poly(adenosine diphosphate-ribose) polymerase-1 (PARP-1), poly(adenosine diphosphate-ribose) (PAR), X-ray repair cross-complementing1(XRCC1), and apurinic/apyrimidinic endonuclease 1 (APE1)]; and apoptosis-associated markers (caspase 9, active caspase 3, and cleaved PARP-1). MAIN OUTCOME MEASURE(S) The prevalence and cellular localization of the above markers in testicular tissues of young, middle aged, and old men. RESULT(S) Statistically significant differences in DNA damage repair-associated proteins (PARP-1, PAR, XRCC1, and APE1), and apoptosis markers (caspase 9, active caspase 3, and cleaved PARP-1) were observed in testicular samples from older men. These differences were most marked in spermatocytes. CONCLUSION(S) The study demonstrates that there is an age-related increase in human testicular germ cell DNA break repair and apoptosis with age.
Collapse
Affiliation(s)
- Moetaz M El-Domyati
- Department of Dermatology, Sexually Transmitted Diseases and Andrology, Al-Minya Faculty of Medicine, Al-Minya, Egypt
| | | | | | | | | | | |
Collapse
|
50
|
Gutti RK, Tsai-Morris CH, Dufau ML. Gonadotropin-regulated testicular helicase (DDX25), an essential regulator of spermatogenesis, prevents testicular germ cell apoptosis. J Biol Chem 2008; 283:17055-64. [PMID: 18430733 DOI: 10.1074/jbc.m708449200] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Gonadotropin-regulated testicular helicase (GRTH)/DDX25 is an essential post-transcriptional regulator of spermatogenesis. In GRTH null mice severe apoptosis was observed in spermatocytes entering the metaphase of meiosis. Pro- and anti-apoptotic factors were found to be under GRTH regulation in comparative studies of spermatocytes from wild type and GRTH(-/-) knock-out (KO) mice. KO mice displayed decreased levels of Bcl-2 and Bcl-xL (anti-apoptotic factors), an increase in Bid, Bak, and Bad (pro-apoptotic), reduced phospho-Bad, and release of cytochrome c. Also, an increase on Smac, a competitor of inhibitor apoptotic proteins that release caspases, was observed. These changes caused an increase in cleavage of caspases 9 and 3, activation of caspase 3 and increases in cleavage products of PARP. The half-life of caspase 3 transcripts was markedly increased in KO, indicating that GRTH had a negative role on its mRNA stability. IkappaBalpha, which sequesters NF-kappaB from its transcriptional activation of pro-apoptotic genes, was highly elevated in KO, and its phospho-form, which promotes its dissociation, was reduced. The increase of HDAC1 and abolition of p300 expression in KO indicated a nuclear action of GRTH on the NF-kappaB-mediated transcription of anti-apoptotic genes. It also regulates the associated death domain pathway and caspase 8-mediated events. GRTH-mediated apoptotic regulation was further indicated by its selective binding to pro- and anti-apoptotic mRNAs. These studies have demonstrated that GRTH, as a component of mRNP particles, acts as a negative regulator of the tumor necrosis factor receptor 1 and caspase pathways and promotes NF-kappaB function to control apoptosis in spermatocytes of adult mice.
Collapse
Affiliation(s)
- Ravi K Gutti
- Section on Molecular Endocrinology, Endocrinology and Reproduction Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892-4510, USA
| | | | | |
Collapse
|