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Lv Y, Dong Y, Su M, Lin H, Zhu Q, Li H. Morphine compromises androgen biosynthesis by immature Leydig cells from pubertal rat testes in vitro. Toxicol Res (Camb) 2024; 13:tfae001. [PMID: 38283823 PMCID: PMC10811522 DOI: 10.1093/toxres/tfae001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/18/2023] [Accepted: 12/17/2023] [Indexed: 01/30/2024] Open
Abstract
Morphine is an analgesic in the opiate family, isolated from many plants. It can inhibit androgen biosynthesis by Leydig cells. Whether morphine directly inhibits androgen biosynthesis and underlying mechanism remains unclear. To investigate the influence of morphine on androgen secretion by rat immature Leydig cells (ILCs) and possible mechanism. Rat ILCs were treated with 0.5-50 μM morphine for 3 h in vitro. Morphine at ≥0.5 μM significantly reduced total androgen secretion. Morphine at 50 μM also compromised luteinizing hormone (LH, 10 mg/kg), 8Br-cAMP (1 mM), and 22R-hydroxycholesterol (20 μM) stimulated total androgen, androstanediol, and testosterone secretion, without affecting pregnenolone, progesterone, androstenedione mediated androgen secretion and testosterone and dihydrotestosterone mediated androstanediol secretion. Further analysis revealed that morphine at ≥0.5 μM downregulated Star expression and at ≥5 μM downregulated Cyp11a1 expression. Morphine also significantly reduced STAR (≥0.5 μM) and reduced CYP11A1 (≥5 μM) levels. 0.5 μM naloxone significantly antagonized morphine-mediated action. In conclusion, morphine might cause side effects by suppressing androgen biosynthesis via u opioid receptor.
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Affiliation(s)
- Yao Lv
- Department of Pharmacy, Ningbo Medical Center Lihuili Hospital, Zhejiang, Ningbo 315100, China
| | - Yaoyao Dong
- Department of Anesthesiology and Perioperative Medicine, the Second Affiliated Hospital and Yuying Children’s Hospital; Key Laboratory of Pediatric Anesthesiology, Ministry of Education; Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Zhejiang, Wenzhou 325027, China
| | - Ming Su
- Department of Anesthesiology and Perioperative Medicine, the Second Affiliated Hospital and Yuying Children’s Hospital; Key Laboratory of Pediatric Anesthesiology, Ministry of Education; Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Zhejiang, Wenzhou 325027, China
| | - Hang Lin
- Department of Anesthesiology and Perioperative Medicine, the Second Affiliated Hospital and Yuying Children’s Hospital; Key Laboratory of Pediatric Anesthesiology, Ministry of Education; Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Zhejiang, Wenzhou 325027, China
| | - Qiqi Zhu
- Department of Anesthesiology and Perioperative Medicine, the Second Affiliated Hospital and Yuying Children’s Hospital; Key Laboratory of Pediatric Anesthesiology, Ministry of Education; Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Zhejiang, Wenzhou 325027, China
| | - Huitao Li
- Department of Anesthesiology and Perioperative Medicine, the Second Affiliated Hospital and Yuying Children’s Hospital; Key Laboratory of Pediatric Anesthesiology, Ministry of Education; Key Laboratory of Anesthesiology of Zhejiang Province, Wenzhou Medical University, Zhejiang, Wenzhou 325027, China
- Zhejiang Engineering Research Center for Innovation and Application of Intelligent Radiotherapy Technology, The Second Affiliated Hospital of Wenzhou Medical University, Zhejiang, Wenzhou 325000, China
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Xiong X, Zhang S, Zang L, Xin Y, Pang Y, Zhang S, Yang Y, Tu R, Zhang L, Du Y, Yang J. Cell apoptosis in the testis of male rats is elevated by intervention with β-endorphin and the mu opioid receptor. Reprod Biol 2023; 23:100789. [PMID: 37499346 DOI: 10.1016/j.repbio.2023.100789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 07/04/2023] [Accepted: 07/14/2023] [Indexed: 07/29/2023]
Abstract
β-endorphin (β-EP) is involved in the regulation of male germ cells; however, little is known about the effect of β-EP on primary germ cells via opioid receptors. In this study, we first revealed significant cell apoptosis in the testis of male rats after β-EP intervention. Subsequently, the expression of the mu opioid receptor (MOR) was detected in both Leydig cells (LCs) and spermatogonia (SGs) by fluorescence colocalization; overlapping signals were also detected in apoptotic cells. In addition, LCs and SGs were separated from the testis of male rats and primary cells were treated with β-EP; this increased the mRNA levels of MOR and was accompanied by acute cell apoptosis. Our findings provide a foundation for the further study of apoptosis in reproductive cells regulated by β-EP and the MOR receptor.
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Affiliation(s)
- Xiaofan Xiong
- Western China Science and Technology Innovation Port in Precision Medicine Institute, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China; Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China; National-Local Joint Engineering Research Center of Biodiagnosis & Biotherapy, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, PR China
| | - Siyu Zhang
- Western China Science and Technology Innovation Port in Precision Medicine Institute, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China
| | - Lulu Zang
- Western China Science and Technology Innovation Port in Precision Medicine Institute, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China; National-Local Joint Engineering Research Center of Biodiagnosis & Biotherapy, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, PR China
| | - Yanlong Xin
- Western China Science and Technology Innovation Port in Precision Medicine Institute, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China; National-Local Joint Engineering Research Center of Biodiagnosis & Biotherapy, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, PR China
| | - Yixin Pang
- Western China Science and Technology Innovation Port in Precision Medicine Institute, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China
| | - Shuting Zhang
- Western China Science and Technology Innovation Port in Precision Medicine Institute, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China
| | - Yu Yang
- Western China Science and Technology Innovation Port in Precision Medicine Institute, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China
| | - Rongfu Tu
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China
| | - Lingyu Zhang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China
| | - Yuefeng Du
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, PR China.
| | - Juan Yang
- Department of Cell Biology and Genetics, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an 710061, PR China.
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Jiang DL, Xu YL, Pan JQ, Fan D, Shen X, Li WY, Ou-Yang HJ, Xu DN, Tian YB, Huang YM. Effects of melatonin on testicular function in adult male mice under different photoperiods. Anim Reprod 2022; 19:e20220038. [PMID: 36189166 PMCID: PMC9524057 DOI: 10.1590/1984-3143-ar2022-0038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/26/2022] [Indexed: 11/21/2022] Open
Affiliation(s)
- Dan-li Jiang
- Zhongkai University of Agriculture and Engineering, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, China
| | - Yang-long Xu
- Zhongkai University of Agriculture and Engineering, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, China
| | - Jian-qiu Pan
- Zhongkai University of Agriculture and Engineering, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, China
| | - Di Fan
- Zhongkai University of Agriculture and Engineering, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, China
| | - Xu Shen
- Zhongkai University of Agriculture and Engineering, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, China
| | - Wan-yan Li
- Zhongkai University of Agriculture and Engineering, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, China
| | - Hong-jia Ou-Yang
- Zhongkai University of Agriculture and Engineering, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, China
| | - Dan-ning Xu
- Zhongkai University of Agriculture and Engineering, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, China
| | - Yun-bo Tian
- Zhongkai University of Agriculture and Engineering, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, China
| | - Yun-mao Huang
- Zhongkai University of Agriculture and Engineering, China; Guangdong Province Key Laboratory of Waterfowl Healthy Breeding, China
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Xu G, Yuan Z, Hou J, Zhao J, Liu H, Lu W, Wang J. Prolonging photoperiod promotes testosterone synthesis of Leydig cells by directly targeting local melatonin system in rooster testes. Biol Reprod 2021; 105:1317-1329. [PMID: 34401899 DOI: 10.1093/biolre/ioab155] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 12/29/2022] Open
Abstract
The study investigated the effects of prolonging photoperiod on the synthesis of testosterone and melatonin in roosters, and the effect of melatonin on testosterone synthesis in rooster Leydig cells as well as its molecular mechanisms. We randomly divided one hundred and twenty 20-week-old roosters into three groups and provided 6, 12.5 and 16 h light, respectively. The results showed that prolonging photoperiod promoted testosterone synthesis, decreased melatonin production, and inhibited the expression of melatonin membrane receptors MEL1A, MEL1B, MEL1C, and aralkylamine n-acetyltransferase (AANAT) in rooster testes. Subsequently, rooster Leydig cells were isolated and treated with 0, 0.1, 1, 10, and 100 ng/mL melatonin for 36 h. The results suggested that melatonin inhibited testosterone synthesis in rooster Leydig cells, and silencing MEL1A and MEL1B relieved the inhibition of melatonin on testosterone synthesis. Additionally, melatonin reduced the intracellular cyclic adenosine monophosphate (cAMP) level and the phosphorylation level of cAMP-response element binding protein (CREB), and CREB overexpression alleviated the inhibition of melatonin on testosterone synthesis. Furthermore, pretreatment with cAMP activator forskolin or protein kinase A (PKA) activator 8-bromo-cAMP blocked the inhibition of melatonin on CREB phosphorylation and testosterone synthesis. These results indicated that prolonging photoperiod promoted testosterone synthesis associated with the decrease in melatonin production and membrane receptors and biosynthetic enzyme of melatonin in rooster testes, and melatonin inhibited testosterone synthesis of rooster Leydig cells by inhibiting the cAMP/PKA/CREB pathway via MEL1A and MEL1B. This may be evidence that prolonging photoperiod could promote testosterone synthesis through the inhibition of the local melatonin pathway in rooster testes.
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Affiliation(s)
- Gaoqing Xu
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,College of Animal Science and Technology, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin Province, China
| | - Zhiyu Yuan
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,College of Animal Science and Technology, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin Province, China
| | - Jiani Hou
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,College of Animal Science and Technology, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin Province, China
| | - Jing Zhao
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,College of Animal Science and Technology, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin Province, China
| | - Hongyu Liu
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,College of Animal Science and Technology, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin Province, China
| | - Wenfa Lu
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,College of Animal Science and Technology, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin Province, China
| | - Jun Wang
- Joint Laboratory of Modern Agricultural Technology International Cooperation, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin Province, China.,College of Animal Science and Technology, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, Jilin Province, China
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Seasonal Variation in the Brain μ-Opioid Receptor Availability. J Neurosci 2021; 41:1265-1273. [PMID: 33361461 PMCID: PMC7888218 DOI: 10.1523/jneurosci.2380-20.2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/19/2020] [Accepted: 12/07/2020] [Indexed: 02/08/2023] Open
Abstract
Seasonal rhythms influence mood and sociability. The brain μ-opioid receptor (MOR) system modulates a multitude of seasonally varying socioemotional functions, but its seasonal variation remains elusive with no previously reported in vivo evidence. Here, we first conducted a cross-sectional study with previously acquired human [11C]carfentanil PET imaging data (132 male and 72 female healthy subjects) to test whether there is seasonal variation in MOR availability. We then investigated experimentally whether seasonal variation in daylength causally influences brain MOR availability in rats. Rats (six male and three female rats) underwent daylength cycle simulating seasonal changes; control animals (two male and one female rats) were kept under constant daylength. Animals were scanned repeatedly with [11C]carfentanil PET imaging. Seasonally varying daylength had an inverted U-shaped functional relationship with brain MOR availability in humans. Brain regions sensitive to daylength spanned the socioemotional brain circuits, where MOR availability peaked during spring. In rats, MOR availabilities in the brain neocortex, thalamus, and striatum peaked at intermediate daylength. Varying daylength also affected the weight gain and stress hormone levels. We conclude that cerebral MOR availability in humans and rats shows significant seasonal variation, which is predominately associated with seasonal photoperiodic variation. Given the intimate links between MOR signaling and socioemotional behavior, these results suggest that the MOR system might underlie seasonal variation in human mood and social behavior.SIGNIFICANCE STATEMENT Seasonal rhythms influence emotion and sociability. The central μ-opioid receptor (MOR) system modulates numerous seasonally varying socioemotional functions, but its seasonal variation remains elusive. Here we used positron emission tomography to show that MOR levels in both human and rat brains show daylength-dependent seasonal variation. The highest MOR availability was observed at intermediate daylengths. Given the intimate links between MOR signaling and socioemotional behavior, these results suggest that the MOR system might underlie seasonal variation in human mood and social behavior.
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Abstract
This paper is the thirty-ninth consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2016 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior, and the roles of these opioid peptides and receptors in pain and analgesia, stress and social status, tolerance and dependence, learning and memory, eating and drinking, drug abuse and alcohol, sexual activity and hormones, pregnancy, development and endocrinology, mental illness and mood, seizures and neurologic disorders, electrical-related activity and neurophysiology, general activity and locomotion, gastrointestinal, renal and hepatic functions, cardiovascular responses, respiration and thermoregulation, and immunological responses.
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and CUNY Neuroscience Collaborative, Queens College, City University of New York, Flushing, NY 11367, United States.
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