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Crafa A, Cannarella R, Calogero AE, Gunes S, Agarwal A. Behind the Genetics: The Role of Epigenetics in Infertility-Related Testicular Dysfunction. Life (Basel) 2024; 14:803. [PMID: 39063558 PMCID: PMC11277947 DOI: 10.3390/life14070803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 06/20/2024] [Accepted: 06/21/2024] [Indexed: 07/28/2024] Open
Abstract
In recent decades, we have witnessed a progressive decline in male fertility. This is partly related to the increased prevalence of chronic diseases (e.g., obesity and diabetes mellitus) and risky lifestyle behaviors. These conditions alter male fertility through various non-genetic mechanisms. However, there is increasing evidence that they are also capable of causing sperm epigenetic alterations, which, in turn, can cause infertility. Furthermore, these modifications could be transmitted to offspring, altering their general and reproductive health. Therefore, these epigenetic modifications could represent one of the causes of the progressive decline in sperm count recorded in recent decades. This review focuses on highlighting epigenetic modifications at the sperm level induced by non-genetic causes of infertility. In detail, the effects on DNA methylation, histone modifications, and the expression profiles of non-coding RNAs are evaluated. Finally, a focus on the risk of transgenerational inheritance is presented. Our narrative review aims to demonstrate how certain conditions can alter gene expression, potentially leading to the transmission of anomalies to future generations. It emphasizes the importance of the early detection and treatment of reversible conditions (such as obesity and varicocele) and the modification of risky lifestyle behaviors. Addressing these issues is crucial for individual health, in preserving fertility, and in ensuring the well-being of future generations.
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Affiliation(s)
- Andrea Crafa
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy; (A.C.); (R.C.); (A.E.C.)
- Global Andrology Forum, Moreland Hills, OH 44022, USA
| | - Rossella Cannarella
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy; (A.C.); (R.C.); (A.E.C.)
- Global Andrology Forum, Moreland Hills, OH 44022, USA
- Glickman Urological & Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH 44106, USA
| | - Aldo E. Calogero
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy; (A.C.); (R.C.); (A.E.C.)
- Global Andrology Forum, Moreland Hills, OH 44022, USA
| | - Sezgin Gunes
- Global Andrology Forum, Moreland Hills, OH 44022, USA
- Department of Medical Biology, Faculty of Medicine, Ondokuz Mayis University, 55280 Samsun, Türkiye
| | - Ashok Agarwal
- Global Andrology Forum, Moreland Hills, OH 44022, USA
- Cleveland Clinic Foundation, Cleveland, OH 44195, USA
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Du C, Yu Y, Fan X. Analysis of research trends (2014-2023) on oxidative stress and male fertility based on bibliometrics and knowledge graphs. Front Endocrinol (Lausanne) 2024; 15:1326402. [PMID: 38323105 PMCID: PMC10846311 DOI: 10.3389/fendo.2024.1326402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/02/2024] [Indexed: 02/08/2024] Open
Abstract
Background Oxidative stress (OS) is considered one of the major factors affecting male fertility, and research in this field has seen constant growth year by year. Currently, around 700 relevant papers are published each year, with a trend of further growth. Therefore, this study systematically summarizes the literature published in the last decade from a bibliometric perspective, revealing the dynamic development of the field, identifying research hotspots, analyzing future trends, and providing reference for further research. Methods Relevant literature on oxidative stress and male fertility was retrieved from the Web of Science Core Collection (WoSCC) database, covering the timespan from 2014 to 2023 and including two types, articles and reviews. CiteSpace and VOSviewer were used for bibliometric analysis, including cluster analysis, co-occurrence analysis, co-citation analysis, and burst analysis of countries/regions, institutions, journals, authors, references, and keywords. Results This paper studied a total of 5,301 papers involving 107 countries/regions, with China having the highest number of publications (898 papers) and the United States having the highest centrality (0.62). Burst analysis of journal citations revealed the emergence of many new journals (e.g., Antioxidants-Basel, Front Endocrinol) after 2021, indicating continuous expansion and development in this field. Cluster analysis of co-cited references and co-occurring keywords divided the research into areas such as oxidative stress and male infertility, oxidative stress level detection, and antioxidants. The keywords associated with research hotspots shifted from oxidative stress detection, sperm DNA damage, apoptosis, and redox potential to DNA methylation, embryonic development, infection, polyunsaturated fatty acids, and antioxidants. Conclusion Bibliometric methods provide an intuitive reflection of the development process in the field of oxidative stress and male fertility, as well as the analysis of research hotspots in different periods. Research on oxidative stress and embryonic development, as well as antioxidant health management, may become hotspots in future research.
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Affiliation(s)
- Chao Du
- Department of Reproductive Medicine, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
- Department of Histology and Embryology, School of Basic Medicine, China Medical University, Shenyang, Liaoning, China
| | - Yuexin Yu
- Department of Reproductive Medicine, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
| | - Xinyue Fan
- Student Affairs Department of Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
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Walker Z, Ernandez J, Lanes A, Srouji SS, Ginsburg E, Kathrins M. The effects of male anxiety and depression on IVF outcomes. Hum Reprod 2023; 38:2119-2127. [PMID: 37690112 DOI: 10.1093/humrep/dead179] [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: 05/30/2023] [Revised: 08/16/2023] [Indexed: 09/12/2023] Open
Abstract
STUDY QUESTION What are the effects of male anxiety and depression on IVF outcomes? SUMMARY ANSWER Men with anxiety had lower final total motile sperm counts (fTMSC) during IVF compared to men without anxiety; however, there were no differences in live birth rates (LBRs). WHAT IS KNOWN ALREADY Studies have shown that male anxiety causes low sperm motility, worse sperm morphology, and increased DNA fragmentation, which are known to be influential factors on fertilization rates and embryo quality during IVF. However, data are lacking on whether there is a direct association between male anxiety and/or depression and IVF outcomes. STUDY DESIGN, SIZE, DURATION This was a survey-based, retrospective cohort study completed at a single, large hospital-affiliated fertility center with 222 respondents who underwent IVF with or without ICSI. The study was conducted between 6 September 2018 and 27 December 2022. PARTICIPANTS/MATERIALS, SETTING, METHODS Male partners of couples who underwent IVF or IVF/ICSI completed a Hospital Anxiety and Depression Scale (HADS) questionnaire. They were separated into two groups for both anxiety (HADS-A ≥ 8 or HADS-A < 8) and depression (HADS-D ≥ 8 or HADS-D < 8). Men with an elevated HADS-A or HADS-D score ≥8 were considered to have anxiety or depression, respectively. The primary outcome was LBR. Secondary outcomes included semen parameters at the time of IVF, cycle outcomes, pregnancy outcomes, and prevalence of erectile dysfunction and low libido. MAIN RESULTS AND THE ROLE OF CHANCE There were a total of 222 respondents, of whom 22.5% had a HADS-A ≥ 8 and 6.5% had a HADS-D ≥ 8. The average age of respondents was 37.38 ± 4.90 years old. Antidepressant use was higher in the respondents with a HADS-A or HADS-D ≥ 8 (P < 0.05). Smoking use was similar between groups for both HADS-A and HADS-D (P > 0.05). When adjusted for male BMI, antidepressant use and smoking, men with a HADS-A or HADS-D ≥ 8 had similar rates of erectile dysfunction (adjusted relative risk (aRR) = 1.12 (95% CI 0.60, 2.06)) and low libido (aRR = 1.70 (95% CI 0.91, 3.15)) compared to those with a HADS-A or HADS-D ≤ 8. Men with a HADS-A ≥ 8 were more likely to have a lower fTMSC on the day of oocyte retrieval (11.8 ≥ 8 vs 20.1 < 8, adjusted ß = -0.66 (95% CI -1.22, -0.10)). However, the LBR per embryo transfer (ET) was similar between the HADS-A groups (43.2% ≥8 vs 45.1% <8, adjusted relative risk = 0.90 (95% CI 0.65, 1.06)). Although depression was uncommon in the entire cohort, the HADS-D groups were clinically similar for fTMSC (18.7 ≥ 8 vs 16.0 < 8) and LBR per ET (46.7% ≥8 vs 45.4% <8). LIMITATIONS, REASONS FOR CAUTION Limitations of our study are the survey-based design, the lack of sperm morphology assessment at the time of IVF, our inability to fully assess the HADS-D ≥ 8 cohort due to the small sample size and the large Caucasian demographic. WIDER IMPLICATIONS OF THE FINDINGS Couples undergoing IVF have an increased likelihood of suffering from anxiety and/or depression. There is currently a debate on whether or not men should be treated with antidepressants while attempting to conceive due to potential detrimental effects on sperm quality. Our study shows that, regardless of antidepressant use, couples with men who did or did not report anxiety and/or depression have similar LBRs when undergoing IVF. Therefore, it is important to assess both partners for mental health and to not withhold treatment due to a concern about a potential impact of antidepressants or anxiety/depression on sperm quality. STUDY FUNDING/COMPETING INTEREST(S) There was no funding to report for this study. Z.W. is a contributing author for UptoDate. S.S.S. is on the advisory board for Ferring Pharmaceuticals. E.G. was a medical consultant for Hall-Matson Esq, Teladoc, and CRICO and is a contributing author for UptoDate. The remaining authors have nothing to report. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Zachary Walker
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Brigham & Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - John Ernandez
- Harvard Medical School, Boston, MA, USA
- Division of Urology, Brigham & Women's Hospital, Boston, MA, USA
| | - Andrea Lanes
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Brigham & Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Serene S Srouji
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Brigham & Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Elizabeth Ginsburg
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Brigham & Women's Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | - Martin Kathrins
- Harvard Medical School, Boston, MA, USA
- Division of Urology, Brigham & Women's Hospital, Boston, MA, USA
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Kooli R, Sallem A, Chebil D, Boussabbeh M, Mohamed BB, Ajina T, Boughzela I, Mougou S, Mehdi M. Factors associated with anxiety and depression in men undergoing fertility investigations: a cross-sectional study. BMC Psychol 2023; 11:299. [PMID: 37777800 PMCID: PMC10543840 DOI: 10.1186/s40359-023-01330-z] [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: 01/12/2023] [Accepted: 09/14/2023] [Indexed: 10/02/2023] Open
Abstract
BACKGROUND Infertility is a real public health issue because of its medical, socio-cultural, and financial impact. It does also have heavy psychological consequences on both partners. This study aimed to assess levels of anxiety and depression among men undergoing infertility investigation and to identify their associated factors. METHODS We conducted a cross-sectional study in the Laboratory of Cytogenetics and Reproductive Biology of Fattouma Bourguiba University Teaching Hospital (Monastir, Tunisia) between August 30th, 2020, and March 16th, 2021. Anxiety and depression levels were assessed using the valid Arab version of the Hospital Anxiety and Depression scale (HAD). Semen parameters were analyzed and interpreted according to 2021 World Health Organization (WHO) guidelines. RESULTS A total of 282 men were included in the current study. The mean HAD-D (depression) and HAD-A (anxiety) scores were of 6.56 ± 3.07 (IQR [4-8]) and 7.94 ± 3.73 (IQR[5-10]) respectively. Univariate analysis showed that patients having two or more comorbidities were nearly five times more likely to be anxious than those without or with only one comorbidity (ORc = 4.71; p = 0.007). Furthermore, single patients were about four times more anxious than those in couple having primary or secondary infertility (ORc = 3.85; p = 0.027). With regards to semen parameters, patients having hypospermia were more than two times anxious compared with those with normal semen volume (ORc = 2.33; p = 0.034). As for depression, we observed that patients with an infertility history lasting for a year or more have a nine times greater risk of depression (ORc = 9.848; p = 0.007). With regards to semen parameters, patients exhibiting two or more semen abnormalities, teratozoospermia and increased MAI were more depressed (ORc = 2.478; p = 0.036; ORc = 2.549: p = 0.023; ORc = 2.762; p = 0.036). Furthermore, we found a negative correlation between HAD-A scores and patient's age. CONCLUSIONS We pointed out through the current study the associated factors with anxiety and depression in patients under fertility management to precociously identify those who need psychological counseling and hence to better manage infertility issues.
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Affiliation(s)
- Rim Kooli
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
| | - Amira Sallem
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia.
- Laboratory of Histology-Embryology and Cytogenetics (LR 18 ES 40), Faculty of Medicine of Monastir, University of Monastir, Monastir, Tunisia.
| | - Dhekra Chebil
- Faculty of Medicine of Sousse, University of Sousse, Sousse, Tunisia
| | - Manel Boussabbeh
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
- Laboratory for Research On Biologically Compatible Substances, Faculty of Dentistry of Monastir, University of Monastir, Monastir, Tunisia
| | - Bochra Ben Mohamed
- Psychiatry Service, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
| | - Tesnim Ajina
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
| | - Ines Boughzela
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
| | - Soumaya Mougou
- Laboratory of Human Cytogenetics and Reproductive Biology, Farhat Hached Univesity Teaching Hospital, Sousse, Tunisia
| | - Meriem Mehdi
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
- Laboratory of Histology-Embryology and Cytogenetics (LR 18 ES 40), Faculty of Medicine of Monastir, University of Monastir, Monastir, Tunisia
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Brahmajosyula M, Morimoto Y. Exogenous GSH Supplementation to Raw Semen Alters Sperm Kinematic Parameters in Infertile Patients. Reprod Sci 2023; 30:2853-2865. [PMID: 37012490 DOI: 10.1007/s43032-023-01221-z] [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: 11/22/2022] [Accepted: 03/15/2023] [Indexed: 04/05/2023]
Abstract
Glutathione is an important antioxidant found in all mammalian cells. Sperm motility is positively correlated with seminal reduced glutathione (GSH) levels, and infertile men are known to have lower GSH levels. Studies on GSH supplementation in improving sperm functions in infertility patients are limited. Here, we re-investigate the effect of exogenous GSH supplementation on human sperm motility and kinematic parameters. Residual semen samples from 71 infertility patients who came for routine semen analysis for infertility assessment were studied. Liquefied raw semen was supplemented with GSH (0-10 mM) for 1 h. The untreated sample was the blank control. Only a 5 mM concentration was tested in all 71 samples. After two washes, the sperm was incubated and then analyzed for sperm motility and kinematic parameters by computer-assisted semen analysis (CASA), followed by adenosine triphosphate (ATP), reactive oxygen species (ROS) levels, free thiols, and DNA damage analyses. At 2 hrs post-treatment, GSH supplementation significantly altered many of the kinematics, compared to the control. Straight line velocity (VSL) (p = 0.0459), curvilinear velocity (VCL) (p < 0.0001), average path velocity (VAP) (p < 0.0001), and lateral head amplitude (ALH) (p < 0.0001) were decreased, whereas straightness (STR) (p = 0.0003), linearity (LIN) (p = 0.0008), and beat cross frequency (BCF) (p = 0.0291) were increased in 5 mM group. Wobble (WOB) (p = 0.4917), motility (MOT) (p = 0.9574), and progressive motility (PROG) (p = 0.5657) were unchanged. ATP level was significantly increased in the 5 mM group (p < 0.05). It is concluded that exogenous GSH supplementation does alter sperm kinematics in humans. These altered kinematic parameters together with increased energy (ATP) may have a positive role in influencing the success rates of ART procedures.
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Affiliation(s)
| | - Yoshiharu Morimoto
- HORAC Grand Front Osaka Clinic, 3-1 Ofuka-cho, Kita-ku, Osaka, 530-0011, Japan
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Albari Shimal RA, Abdulwahid Mohammed A, Al-Essawe EM. Evaluation of Post-Thaw Swim-Up Selection Combined With Glutathione Addition for Improvement of Sperm Chromatin Maturity in Normozoospermic Samples. Cureus 2023; 15:e40313. [PMID: 37448405 PMCID: PMC10337802 DOI: 10.7759/cureus.40313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 06/10/2023] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND Cryopreservation of human semen alters the spermatozoal structure, resulting in a reduction in sperm function parameters. Various antioxidants may be able to slow or prevent this type of injury. Glutathione (GSH) has numerous antioxidant properties; supplementing the semen with GSH before freezing may assist in the restoration of post-thaw sperm functionality. OBJECTIVE To investigate the effect of adding 5mM of glutathione before freezing on human sperm cryosurvival. MATERIALS AND METHODS Semen samples were collected from 30 patients (22 normozoospermic and 8 asthenozoospermic) after 3-5 days of sexual abstinence. Following liquefaction, macro- and microscopic examinations were performed. The samples were then divided into two equal aliquots: the first aliquot received 5 mM of glutathione before freezing, and the second aliquot was considered the control (without glutathione). The samples were frozen using the rapid cryopreservation method and then preserved for 7-10 days in a liquid nitrogen tank before being thawed. Thawed samples from each group were examined microscopically according to the WHO 2010 guidelines. Aniline blue was used to assess the maturity of the DNA. Then, the direct-swim-up technique was applied to thawed samples from both groups to select the best sperm quality. RESULTS The cryopreservation process negatively impacts all sperm characteristics in both groups. Sperm DNA integrity decreased. Glutathione addition before freezing decreased sperm chromatin immaturity (SCI) percent compared to the control (22.98 ± 0.83, 20.79 ± 0.56). The post-thaw performance of the swim-up technique resulted in a select sperm population with high progressive motility (p = 0.04) and an improvement in DNA integrity in the treated group versus the control group after thawing. CONCLUSION The DNA integrity in normozoospermic samples was improved by adding 5 mM glutathione before freezing. Performing the swim-up technique after thawing had no effect on sperm quality in asthenozoospermic patients.
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Affiliation(s)
- Raghad Abd Albari Shimal
- Department of Applied Embryology, High Institute for Infertility Diagnosis and Assisted Reproductive Technologies, Al-Nahrain University, Al-Nahrain, IRQ
| | - Amal Abdulwahid Mohammed
- Department of Applied Embryology, High Institute for Infertility Diagnosis and Assisted Reproductive Technologies, Al-Nahrain University, Al-Nahrain, IRQ
| | - Essraa Mohsen Al-Essawe
- Department of Physiology, High Institute for Infertility Diagnosis and Assisted Reproductive Technologies, Al-Nahrain University, Al-Nahrain, IRQ
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Garrouch S, Sallem A, Ben Fredj M, Kooli R, Bousabbeh M, Boughzala I, Sriha A, Hajjaji A, Mehdi M. Deleterious impact of COVID-19 pandemic: Male fertility was not out of the bag. PLoS One 2023; 18:e0284489. [PMID: 37155673 PMCID: PMC10166489 DOI: 10.1371/journal.pone.0284489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 03/31/2023] [Indexed: 05/10/2023] Open
Abstract
BACKGROUND The emergence and the spread of coronavirus disease (COVID-19) induced by the SARS-CoV-2 virus has multiple consequences in all countries around the world. Male germ cells of infertile patients which are shown to be vulnerable to many environmental conditions, could be particularly vulnerable to such an exceptional pandemic situation. We aimed through the current study to investigate the potential variations in sperm quality of infertile patients during the COVID-19 pandemic in Tunisia. METHODS This was a cohort study including 90 infertile patients addressed to Laboratory of Cytogenetics and Reproductive Biology of Monastir Department of Maternity and Neonatology in Monastir, during the two first COVID-19 waves in Tunisia and who already have a spermogram before the pandemic period. RESULTS We have pointed out a significant decrease in both total and progressive sperm motility during COVID-19 pandemic (p<0.0001 and p = 0.001 respectively). The percentage of morphologically abnormal spermatozoa increased from 90.99±7.38 to 93.67±4.55% during the pandemic (p< 0.001). The remaining sperm parameters were similar between the two compared timepoints. Interestingly, the univariate analysis didn't show any other associated factor to the observed impairment in sperm mobility and morphology. CONCLUSION These data highlight the severe impact of the pandemic of the male reproductive health of hypofertile patients. Delaying infertility investigations and management after pandemic waves is recommended to hope a better gamete quality and hence to improve conception potential.
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Affiliation(s)
- Siwar Garrouch
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
| | - Amira Sallem
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
- Laboratory of Histology-Embryology and Cytogenetics (LR18ES40), Faculty of Medicine of Monastir, University of Monastir, Monastir, Tunisia
| | - Manel Ben Fredj
- Department of Epidemiology and Preventive Medicine, Fattouma Bouguiba University Hospital, University of Monastir, Monastir, Tunisia
| | - Rim Kooli
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
| | - Manel Bousabbeh
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
| | - Ines Boughzala
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
| | - Asma Sriha
- Department of Epidemiology and Preventive Medicine, Fattouma Bouguiba University Hospital, University of Monastir, Monastir, Tunisia
| | - Awatef Hajjaji
- Department of Gynecology and Obstetrics, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
| | - Meriem Mehdi
- Laboratory of Cytogenetics and Reproductive Biology, Maternity and Neonatology Center, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
- Laboratory of Histology-Embryology and Cytogenetics (LR18ES40), Faculty of Medicine of Monastir, University of Monastir, Monastir, Tunisia
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Kumar M, Zilate S, Gupta C. Effect of Stress and Caffeine on Male Infertility. Cureus 2022; 14:e28487. [PMID: 36176863 PMCID: PMC9513285 DOI: 10.7759/cureus.28487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 08/27/2022] [Indexed: 02/06/2023] Open
Abstract
Caffeine is a natural psychoactive chemical found in beverages made from coffee. In addition, it is added by the manufacturers of a large number of sodas and energy drinks. It does this by stimulating both the brain and the central nervous system, enabling you to avoid being sleepy while still keeping you attentive. A state of emotional or physical tension is defined as stress. It can be induced through the experience of something or thinking of something that causes you to feel uncomfortable, irritated, or nervous. Your body's response to adversity or demand is what we call stress. Among couples, male infertility is common. A failure in spermatogenesis is accountable for nearly half of all occurrences of infertility in marriage. Ageing, psychological stress, diet, physical exercise, coffee, hot water, hot scrotum, and cell phone usage are some of the few modifiable lifestyle variables that have a role in the development of infertility. Many hypotheses have been proposed to establish the link between stress in the workplace, life events (war, earthquake, etc.), and inability to conceive have been linked to inferior or degraded semen quality. In this review, we will discuss the effect on male fertility of elements including quality of life (such as exercise, diet, and other alterations to one's daily routine) and psychological stress. In addition, the effects on male fertility of elevated scrotal temperature, improper dietary habits, and physical inactivity will be discussed. The loss in male fertility, mainly due to ageing, inappropriate lifestyles, and environmental factors, is a significant public health concern in this century. Couples can enhance their quality of life and increase their chances of naturally conceiving a child by altering their way of life and supplementing it with nutraceutical antioxidants and an organised educational, environmental, dietary, and physical exercise program.
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The Psychoemotional Stress-Induced Changes in the Abundance of SatIII (1q12) and Telomere Repeats, but Not Ribosomal DNA, in Human Leukocytes. Genes (Basel) 2022; 13:genes13020343. [PMID: 35205387 PMCID: PMC8872136 DOI: 10.3390/genes13020343] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/01/2022] [Accepted: 02/11/2022] [Indexed: 02/04/2023] Open
Abstract
INTRODUCTION. As shown earlier, copy number variations (CNV) in the human satellite III (1q12) fragment (f-SatIII) and the telomere repeat (TR) reflects the cell’s response to oxidative stress. The contents of f-SatIII and TR in schizophrenic (SZ) patients were found to be lower than in healthy controls (HC) in previous studies. The major question of this study was: ‘What are the f-SatIII and TR CNV dynamic changes in human leukocytes, depending on psychoemotional stress?’ MATERIALS AND METHODS. We chose a model of psychoemotional stress experienced by second-year medical students during their exams. Blood samples were taken in stressful conditions (exams) and in a control non-stressful period. Biotinylated probes were used for f-SatIII, rDNA, and TR quantitation in leukocyte DNA by non-radioactive quantitative hybridization in SZ patients (n = 97), HC (n = 97), and medical students (n = 17, n = 42). A flow cytometry analysis was used for the oxidative stress marker (NOX4, 8-oxodG, and γH2AX) detection in the lymphocytes of the three groups. RESULTS. Oxidative stress markers increased significantly in the students’ lymphocytes during psychoemotional stress. The TR and f-SatIII, but not the rDNA, contents significantly changed in the DNA isolated from human blood leukocytes. After a restoration period (post-examinational vacations), the f-SatIII content decreased, and the TR content increased. Changes in the blood cells of students during examinational stress were similar to those in SZ patients during an exacerbation of the disease. CONCLUSIONS. Psychoemotional stress in students during exams triggers a universal mechanism of oxidative stress. The oxidative stress causes significant changes in the f-SatIII and TR contents, while the ribosomal repeat content remains stable. A hypothesis is proposed to explain the quantitative polymorphisms of f-SatIII and TR contents under transient (e.g., students’ exams) or chronic (in SZ patients) stress. The changes in the f-SatIII and TR copy numbers are non-specific events, irrespective of the source of stress. Thus, our findings suggest that the psychoemotional stress, common in SZ patients and healthy students during exams, but not in a schizophrenia-specific event, was responsible for the changes in the repeat contents that we observed earlier in SZ patients.
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Evans EPP, Scholten JTM, Mzyk A, Reyes-San-Martin C, Llumbet AE, Hamoh T, Arts EGJM, Schirhagl R, Cantineau AEP. Male subfertility and oxidative stress. Redox Biol 2021; 46:102071. [PMID: 34340027 PMCID: PMC8342954 DOI: 10.1016/j.redox.2021.102071] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/14/2021] [Accepted: 07/14/2021] [Indexed: 02/08/2023] Open
Abstract
To date 15% of couples are suffering from infertility with 45-50% of males being responsible. With an increase in paternal age as well as various environmental and lifestyle factors worsening these figures are expected to increase. As the so-called free radical theory of infertility suggests, free radicals or reactive oxygen species (ROS) play an essential role in this process. However, ROS also fulfill important functions for instance in sperm maturation. The aim of this review article is to discuss the role reactive oxygen species play in male fertility and how these are influenced by lifestyle, age or disease. We will further discuss how these ROS are measured and how they can be avoided during in-vitro fertilization.
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Affiliation(s)
- Emily P P Evans
- Department of Biomedical Engineering, Groningen University University Medical Center Groningen, Antonius Deusinglaan 1, 9713AW, Groningen, the Netherlands
| | - Jorien T M Scholten
- Department of Biomedical Engineering, Groningen University University Medical Center Groningen, Antonius Deusinglaan 1, 9713AW, Groningen, the Netherlands
| | - Aldona Mzyk
- Department of Biomedical Engineering, Groningen University University Medical Center Groningen, Antonius Deusinglaan 1, 9713AW, Groningen, the Netherlands; Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25, 30-059, Krakow, Poland
| | - Claudia Reyes-San-Martin
- Department of Biomedical Engineering, Groningen University University Medical Center Groningen, Antonius Deusinglaan 1, 9713AW, Groningen, the Netherlands
| | - Arturo E Llumbet
- Department of Biomedical Engineering, Groningen University University Medical Center Groningen, Antonius Deusinglaan 1, 9713AW, Groningen, the Netherlands; Laboratory of Genomic of Germ Cells, Biomedical Sciences Institute, Faculty of Medicine, University of Chile. Independencia, 1027, Independencia Santiago, Chile
| | - Thamir Hamoh
- Department of Biomedical Engineering, Groningen University University Medical Center Groningen, Antonius Deusinglaan 1, 9713AW, Groningen, the Netherlands
| | - Eus G J M Arts
- Department of Obstetrics and Gynaecology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Romana Schirhagl
- Department of Biomedical Engineering, Groningen University University Medical Center Groningen, Antonius Deusinglaan 1, 9713AW, Groningen, the Netherlands.
| | - Astrid E P Cantineau
- Department of Obstetrics and Gynaecology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
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11
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Abdel-Razik RK, Mosallam EM, Hamed NA, Badawy MEI, Abo-El-Saad MM. Testicular deficiency associated with exposure to cypermethrin, imidacloprid, and chlorpyrifos in adult rats. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2021; 87:103724. [PMID: 34416397 DOI: 10.1016/j.etap.2021.103724] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 07/20/2021] [Accepted: 08/14/2021] [Indexed: 06/13/2023]
Abstract
The testicular deficiency associated with exposure to three widely used insecticides in Egyptian agriculture was evaluated. Animals were orally treated with sub-lethal dose (1/50 of the oral LD50) of cypermethrin (CYP), imidacloprid (IMC), and chlorpyrifos (CPF) at 5, 9 and 1.9 mg/kg/day, respectively, five times a week for one month. The CYP, IMC, and CPF exposure resulted in a significant decline in animal body weight, sperm count, motility, normality, and viability with increased head and tail deformities. Significant reduction in serum testosterone, luteinizing hormone (LH), follicle-stimulating hormone (FSH), testis superoxide dismutase (SOD), and reduced glutathione (GSH) levels. In contrast, catalase (CAT), lipid peroxidation (LPO), and protein carbonyl content (PCC) levels were significantly stimulated. Jointly, obtained results were confirmed by microscopic examination of testis sections. The present data concluded that the CYP, IMC, and CPF have a public health impact and violently interferes with male rat reproductive system.
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Affiliation(s)
- Reda K Abdel-Razik
- Mammalian & Aquatic Toxicology Department, Central Agricultural Pesticide Laboratory, Agricultural Research Center, 21616-El-Sabahia, Alexandria, Egypt.
| | - Eman M Mosallam
- Mammalian & Aquatic Toxicology Department, Central Agricultural Pesticide Laboratory, Agricultural Research Center, 21616-El-Sabahia, Alexandria, Egypt.
| | - Nadia A Hamed
- Mammalian & Aquatic Toxicology Department, Central Agricultural Pesticide Laboratory, Agricultural Research Center, 21616-El-Sabahia, Alexandria, Egypt.
| | - Mohamed E I Badawy
- Department of Pesticide Chemistry and Technology, Faculty of Agriculture, 21545-El-Shatby, Alexandria University, Alexandria, Egypt.
| | - Mahmoud M Abo-El-Saad
- Department of Pesticide Chemistry and Technology, Faculty of Agriculture, 21545-El-Shatby, Alexandria University, Alexandria, Egypt.
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12
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Relationship between nuclear DNA fragmentation, mitochondrial DNA damage and standard sperm parameters in spermatozoa of infertile patients with leukocytospermia. J Gynecol Obstet Hum Reprod 2021; 50:102101. [DOI: 10.1016/j.jogoh.2021.102101] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 01/02/2021] [Accepted: 02/16/2021] [Indexed: 12/28/2022]
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13
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Mendonça MAC, Nichi M, Teixeira RHF, Braga FR, Simões R, Losano JDDA, Jorge-Neto PN, Pizzutto CS. Spermatic profile of captive giant anteaters (Myrmecophaga tridactyla): Knowing more to preserve better. Zoo Biol 2021; 40:227-237. [PMID: 33739560 DOI: 10.1002/zoo.21602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 10/18/2020] [Accepted: 02/16/2021] [Indexed: 11/06/2022]
Abstract
The giant anteater (Myrmecophaga tridactyla) is being threatened by natural habitat destruction and fragmentation, illegal hunting and road kills. In this context, the generation of basic information on the reproductive parameters of this species is vital, aiming to improve reproductive management via, amongst others, assisted reproductive technologies. This study aimed to describe the morphological and functional features of semen collected from captive giant anteaters. Electroejaculation was performed in 13 animals housed in zoos located in São Paulo state, Brazil. Semen samples were collected from 13 animals in 16 procedures. Samples were evaluated for volume, motility, vigor, pH, concentration, sperm morphology, and functional tests. The following mean values were obtained: volume 1.28 ± 0.27 mL; motility 28.3 ± 6.2%; vigor 2.4 ± 0.25; concentration 129.4 ± 36.1 × 106 sperm/mL; pH 7.4 ± 0.2. Total acrosome, head, midpiece, and tail sperm abnormalities were 3.2 ± 0.8%, 25.4 ± 3.6%, 20.7 ± 3.2%, and 14.7 ± 2.6%, respectively. Intact acrosome was found in 83.7 ± 3.1% and intact membrane in 81.1 ± 4.0% of all samples collected. Mitochondrial activity was 66.4 ± 6.0% (Class I), 18.7 ± 2.9% (Class II), 8.0 ± 2.0% (Class III), 3.9 ± 1.0% (Class IV), and 3.0 ± 0.9% (Class V). Sperm DNA fragmentation rate was 13.2 ± 3.7%. These results indicated that electroejaculation is a feasible method for semen collection in giant anteaters, allowing a more detailed description of the semen in this species.
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Affiliation(s)
- Marco Antonio Carstens Mendonça
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Marcílio Nichi
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
| | | | - Fabrício Rassy Braga
- Veterinary Division, Fundação Parque Zoológico de São Paulo, SP, São Paulo, Brazil
| | - Renata Simões
- Center for Natural and Human Sciences, Federal University of ABC, Santo André, SP, Brazil
| | - João Diego de Agostini Losano
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Pedro Nacib Jorge-Neto
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil.,Research Division, Instituto Reprocon, Campo Grande, MS, Brazil
| | - Cristiane Schilbach Pizzutto
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil.,Research Division, Instituto Reprocon, Campo Grande, MS, Brazil
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14
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Effects of vitamin C, vitamin E, selenium, zinc, or their nanoparticles on camel epididymal spermatozoa stored at 4 °C. Trop Anim Health Prod 2021; 53:86. [PMID: 33411090 DOI: 10.1007/s11250-020-02521-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 12/10/2020] [Indexed: 10/22/2022]
Abstract
This study determined the effects of antioxidant supplementation and storage time at cool temperatures on the characteristics of epididymal camel spermatozoa. Camel testes were collected at the abattoir after animal slaughtering and kept at 4 °C during transportation and until processing (max 6 h). Spermatozoa were retrieved and diluted with SHOTOR extender, split in aliquots, supplemented with the following antioxidants: 200 μm/mL vitamin E, 1.0 g/L vitamin C, 1 μg/mL selenium nanoparticles, 50 μg/mL zinc nanoparticles, 2 μg/mL sodium selenite, and 100 μg/mL zinc sulfate, and stored at 4 °C for 2, 48, 96, and 144 h. The storage time significantly affected (P < 0.05) the sperms' motility and livability, the sperms' membrane integrity, and the percentages of cytoplasmic droplets as well as the percentage of morphologically normal spermatozoa. Epididymal sperm characteristics (progressive motility, livability, membrane integrity, and abnormalities) were significantly improved (P < 0.05) when the spermatozoa were diluted with antioxidants as compared with the control group, and the best additives were identified as nano-selenium, sodium selenite, nano-zinc, and zinc sulfate. In conclusion, adding nano-sized minerals or inorganic trace elements and vitamins maintained the progressive motility, livability, and membrane integrity, and decreased abnormalities and cytoplasmic droplet percentages of epididymal camel spermatozoa stored at 4 °C up to 144 h.
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15
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Coen CW, Bennett NC, Holmes MM, Faulkes CG. Neuropeptidergic and Neuroendocrine Systems Underlying Eusociality and the Concomitant Social Regulation of Reproduction in Naked Mole-Rats: A Comparative Approach. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1319:59-103. [PMID: 34424513 DOI: 10.1007/978-3-030-65943-1_3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The African mole-rat family (Bathyergidae) includes the first mammalian species identified as eusocial: naked mole-rats. Comparative studies of eusocial and solitary mole-rat species have identified differences in neuropeptidergic systems that may underlie the phenomenon of eusociality. These differences are found in the oxytocin, vasopressin and corticotrophin-releasing factor (CRF) systems within the nucleus accumbens, amygdala, bed nucleus of the stria terminalis and lateral septal nucleus. As a corollary of their eusociality, most naked mole-rats remain pre-pubertal throughout life because of the presence of the colony's only reproductive female, the queen. To elucidate the neuroendocrine mechanisms that mediate this social regulation of reproduction, research on the hypothalamo-pituitary-gonadal axis in naked mole-rats has identified differences between the many individuals that are reproductively suppressed and the few that are reproductively mature: the queen and her male consorts. These differences involve gonadal steroids, gonadotrophin-releasing hormone-1 (GnRH-1), kisspeptin, gonadotrophin-inhibitory hormone/RFamide-related peptide-3 (GnIH/RFRP-3) and prolactin. The comparative findings in eusocial and solitary mole-rat species are assessed with reference to a broad range of studies on other mammals.
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Affiliation(s)
- Clive W Coen
- Reproductive Neurobiology, Division of Women's Health, Faculty of Life Sciences & Medicine, King's College London, London, UK.
| | - Nigel C Bennett
- Mammal Research Institute, Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa
| | - Melissa M Holmes
- Department of Psychology, University of Toronto Mississauga, Mississauga, ON, Canada.,Department of Ecology & Evolutionary Biology, University of Toronto, Toronto, Canada.,Department of Cell & Systems Biology, University of Toronto, Toronto, Canada
| | - Christopher G Faulkes
- School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
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16
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Resistin in Human Seminal Plasma: Relationship with Lipid Peroxidation, CAT Activity, GSH/GSSG Ratio, and Semen Parameters. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:2192093. [PMID: 31772701 PMCID: PMC6854241 DOI: 10.1155/2019/2192093] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 08/26/2019] [Accepted: 09/07/2019] [Indexed: 12/14/2022]
Abstract
Resistin is an adipokine involved in inflammation and able to induce the expression of other proinflammatory cytokines. It is known that, in human semen, resistin is correlated with inflammatory cytokines and sperm quality. The aim of this prospective study was to explore the potential relationship between resistin, lipid peroxidation (LPO), catalase (CAT) activity, and reduced and oxidized glutathione (GSH/GSSG) ratio in semen samples of infertile patients with leukocytospermia (no. 19), infertile patients with varicocele (no. 17), and fertile men (no. 17). Semen analysis was performed following the WHO guidelines, and sperm apoptosis and necrosis were evaluated with annexin V/propidium iodide assay. Seminal plasma samples were used to determine resistin levels by an immunological method, MDA concentration by a HPLC analysis with UV detection, GSH/GSSG ratio by an enzymatic method, CAT activity by a spectrophotometric method. The results showed that, in both groups of infertile patients, semen parameters were significantly reduced (P < 0.001) and sperm apoptosis and necrosis percentages were increased. Resistin levels were significantly higher in leukocytospermia and varicocele groups (P < 0.001 and P < 0.01, respectively) as well as MDA concentration (P < 0.001) compared to controls. The MDA level was also significantly increased in the leukocytospermia group versus the varicocele group (P < 0.05). The GSH/GSSG ratio was higher in fertile controls than the leukocytospermia group (P < 0.05) and the varicocele group (P < 0.001) and in the leukocytospermia group versus the varicocele group (P < 0.05). Both the leukocytospermia and varicocele groups showed increased values of CAT activities (P < 0.001) than controls. Briefly, the correlation between variables, calculated in the whole patient population, showed that resistin levels positively correlated with MDA levels, CAT activity, sperm apoptosis, and necrosis and negatively with sperm parameters and GSH/GSSG ratio. These results support an active role of resistin in an inflammatory process causing LPO, increase of CAT activity, and decrease of GSH/GSSG ratio in seminal plasma of infertile men vs. fertile controls.
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17
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Relationships between Ghrelin and Obestatin with MDA, Proinflammatory Cytokines, GSH/GSSG Ratio, Catalase Activity, and Semen Parameters in Infertile Patients with Leukocytospermia and Varicocele. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7261842. [PMID: 31781347 PMCID: PMC6855048 DOI: 10.1155/2019/7261842] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 08/29/2019] [Accepted: 09/12/2019] [Indexed: 11/18/2022]
Abstract
Ghrelin and obestatin are involved in many biological functions including reproduction. Growing evidences suggest that both peptides could exert protective and antioxidant activities. In this study, the relationships between ghrelin/obestatin, interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), malondialdehyde (MDA), reduced glutathione (GSH), oxidized glutathione (GSSG), expressed as the GSH/GSSG ratio, catalase (CAT), and semen parameters in infertile patients with varicocele or leukocytospermia and controls were investigated. Fifty-six infertile patients (32 with leukocytospermia and 24 with varicocele) and 14 controls participated in this study. Semen analysis was performed following the WHO guidelines. Apoptotic and necrotic sperm were scored by annexin V/propidium iodide assay. Seminal plasma samples were used for the following determinations: ghrelin, obestatin, IL-6, and TNF-α were measured by an immunological method, GSH/GSSG by an enzymatic method, and CAT by spectrophotometric determination. With respect to controls, both the leukocytospermia and varicocele groups showed altered sperm parameters, significantly increased sperm apoptosis (P = 0.009 and P = 0.011, respectively), IL-6 (P = 0.0001 and P = 0.004, respectively), and TNF-α levels (P = 0.0001 and P = 0.002, respectively); both groups had significantly decreased levels of ghrelin (P = 0.0001), obestatin (P = 0.0001 and P = 0.006, respectively), and GSH/GSSG ratio (P = 0.003 and P = 0.0001, respectively). The MDA concentration was significantly increased in the leukocytospermia group vs. controls (P = 0.0001), in the varicocele group vs. controls (P = 0.011), and in the leukocytospermia group vs. the varicocele group (P = 0.008). CAT activity was augmented in both the leukocytospermia and varicocele groups (P = 0.0001)vs. controls. The results indicate that both ghrelin and obestatin may play a protective role in human semen and this effect is probably due to their antioxidant properties.
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18
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Ferigolo PC, Ribeiro de Andrade MB, Camargo M, Carvalho VM, Cardozo KHM, Bertolla RP, Fraietta R. Sperm functional aspects and enriched proteomic pathways of seminal plasma of adult men with obesity. Andrology 2019; 7:341-349. [DOI: 10.1111/andr.12606] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 12/19/2018] [Accepted: 02/11/2019] [Indexed: 12/13/2022]
Affiliation(s)
- P. C. Ferigolo
- Department of Surgery Division of Urology Human Reproduction Section Sao Paulo Federal University Sao Paulo Brazil
| | - M. B. Ribeiro de Andrade
- Department of Surgery Division of Urology Human Reproduction Section Sao Paulo Federal University Sao Paulo Brazil
| | - M. Camargo
- Department of Surgery Division of Urology Human Reproduction Section Sao Paulo Federal University Sao Paulo Brazil
| | | | | | - R. P. Bertolla
- Department of Surgery Division of Urology Human Reproduction Section Sao Paulo Federal University Sao Paulo Brazil
- Hospital São Paulo São Paulo Brazil
| | - R. Fraietta
- Department of Surgery Division of Urology Human Reproduction Section Sao Paulo Federal University Sao Paulo Brazil
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19
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Zou P, Sun L, Chen Q, Zhang G, Yang W, Zeng Y, Zhou N, Li Y, Liu J, Ao L, Cao J, Yang H. Social support modifies an association between work stress and semen quality: Results from 384 Chinese male workers. J Psychosom Res 2019; 117:65-70. [PMID: 30391000 DOI: 10.1016/j.jpsychores.2018.10.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 10/22/2018] [Accepted: 10/23/2018] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Psychosocial factors have been associated with a decline of the quality of semen. The study was aimed at (i) estimating the association between work stress and semen quality and (ii) exploring the moderating effect of social support in semen parameters among Chinese male workers. METHODS Data were obtained from 384 adult male workers recruited from April 2014 to December 2015 in Chongqing, China. Participants completed a questionnaire assessing demographic and life-style factors. Work stress and social support was measured by the Chinese version of a 22-item Job Content Questionnaire (JCQ). They underwent a physical examination and provided a semen sample. RESULTS Subjects with high work stress were associated with a higher risk of being classified below WHO's thresholds for "normal," defined by sperm concentration (OR 2.14, 95% CI 1.24-3.68, p = .006) or total sperm count (OR 1.95, 95% CI 1.13-3.36, p = .02) criteria than subjects with low work stress were. However, these adverse associations were not observed among subjects with high social support (p = .80 for sperm concentration, and p = .39 for total sperm count). Interaction effects between social support and work stress on sperm concentration (p = .002) and total sperm count (p = .02) were detected. CONCLUSION Work stress is associated with lower levels of semen quality. Social support attenuates the negative association between work stress and semen quality, which may have implications for reproductive health.
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Affiliation(s)
- Peng Zou
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Lei Sun
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Qing Chen
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Guowei Zhang
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China; Department of Environmental Health, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Wang Yang
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Yingfei Zeng
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Niya Zhou
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Ying Li
- Department of Social Medicine and Health Service Management, Third Military Medical University, Chongqing, China
| | - Jinyi Liu
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Lin Ao
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Jia Cao
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China.
| | - Huan Yang
- Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China.
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20
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Ilacqua A, Izzo G, Emerenziani GP, Baldari C, Aversa A. Lifestyle and fertility: the influence of stress and quality of life on male fertility. Reprod Biol Endocrinol 2018; 16:115. [PMID: 30474562 PMCID: PMC6260894 DOI: 10.1186/s12958-018-0436-9] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 10/24/2018] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Male infertility is a widespread condition among couples. In about 50% of cases, couple infertility is attributable to the male partner, mainly due to a failure in spermatogenesis. In recent times, the crucial role that modifiable lifestyle factors play in the development of infertility have generated a growing interest in this field of study, i.e. aging, psychological stress, nutrition, physical activity, caffeine, high scrotal temperature, hot water, mobile telephone use. Several studies have investigated associations between semen quality and the presence of lifestyle stressors i.e. occupational, life events (war, earthquake, etc.) or couple infertility; overall, these studies provide evidence that semen quality is impaired by psychological stress. In this review, we will discuss the impact of quality of life (modifiable lifestyle factors) and psychological stress on male fertility. In addition, the role that increased scrotal temperature along with inappropriate nutritional and physical exercise attitudes exert on male fertility will be presented. CONCLUSION The decline of male fertility, particularly associated with advancing age, incorrect lifestyles and environmental factors plays an important role on natality, and its consequences on the future on human population makes this an important public health issue in this century. Thus, modification of lifestyle through a structured program of educational, environmental, nutritional/physical exercise and psychological support, combined with the use of nutraceutical antioxidants can prevent infertility and therefore, may help couples to obtain better quality of life and improved possibility to conceive spontaneously or optimize their chances of conception.
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Affiliation(s)
- Alessandro Ilacqua
- Department of Movement, Human and Health Sciences, Section of Health Sciences, University of Rome "Foro Italico", Rome, Italy
| | - Giulia Izzo
- Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | - Gian Pietro Emerenziani
- Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, Catanzaro, Italy
| | | | - Antonio Aversa
- Department of Experimental and Clinical Medicine, Magna Graecia University of Catanzaro, Catanzaro, Italy.
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21
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Alsalman ARS, Almashhedy LA, Hadwan MH. Effect of Oral Zinc Supplementation on the Thiol Oxido-Reductive Index and Thiol-Related Enzymes in Seminal Plasma and Spermatozoa of Iraqi Asthenospermic Patients. Biol Trace Elem Res 2018; 184:340-349. [PMID: 29222649 DOI: 10.1007/s12011-017-1215-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 12/01/2017] [Indexed: 12/14/2022]
Abstract
A thiol group plays an essential role in sperm metabolism and the antioxidative defense state. Zinc is the second most abundant element in the human body, following iron. The present study was conducted to study the effect of zinc supplementation on the characteristics of semen along with thiol and thiol-related enzymes in semen of asthenospermic patients. Semen samples were obtained from 60 fertile and 60 asthenospermic men, from couples who had consulted the infertility clinic of Babil Hospital (Hillah city, Iraq). The subfertile group was treated with zinc; every participant took two 220 mg capsules of zinc sulfate per day for 3 months. Semen samples were obtained (before and after zinc supplementation). The levels of reduced thiol, oxidized thiol, thiol oxido-reductive index, and thiol-related enzymes activities were determined in spermatozoa and seminal plasma of patients and healthy groups. Oxidized thiol levels were significantly higher in the infertile patients compared to that in the fertile group. Conversely, reduced thiol level, sulfhydryl oxidase activity, and glutathione peroxidase activity significantly decreased in the infertile patients compared to that in the fertile group. Oxidized thiol levels, reduced thiol levels, and thiol-related enzymes activities of the infertile patients were restored to normal values after treatment with zinc. However, reduced and oxidized thiol levels in spermatozoa did not change significantly in the group treated with zinc. The quantitative values for RSH/RSSR and thiol-related enzymes may provide useful means to qualitatively express the oxidant/antioxidant balance in clinical and epidemiologic studies. ClinicalTrials.gov Identifier: NCT02985905.
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Affiliation(s)
| | - Lamia A Almashhedy
- Chemistry Department, College of Science, University of Babylon, Hillah, Iraq
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Huang C, Cao X, Pang D, Li C, Luo Q, Zou Y, Feng B, Li L, Cheng A, Chen Z. Is male infertility associated with increased oxidative stress in seminal plasma? A-meta analysis. Oncotarget 2018; 9:24494-24513. [PMID: 29849956 PMCID: PMC5966266 DOI: 10.18632/oncotarget.25075] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 03/22/2018] [Indexed: 02/06/2023] Open
Abstract
Objectives We conducted a systematic review and meta-analysis of observational case-control studies to evaluate markers of oxidative stress in seminal plasma of patients with male infertility. Background Current evidence links oxidative stress to male infertility, in which multiple markers of oxidative stress have been widely detected, publishing inconsistent results with regard to the role of oxidative stress markers in the evaluation of male infertility. Therefore, a systematic review and meta-analysis on this issue is necessary. Results From the 1024 articles initially retrieved, 65 studies were included in our meta-analysis with 11 oxidative stress markers, containing 3819 male infertility patients and 2012 controls. The concentrations of malondialdehyde (SMD = 1.86, p < 0.00001), NO (SMD = 0.89, p = 0.001), carbonyl protein (SMD = 2.09, p < 0.00001) in seminal plasma were significantly higher in infertility patients. The concentrations of GSH (SMD = -1.68, p < 0.00001), vitamin C (SMD = -1.12, p < 0.00001), and vitamin E (SMD = -1.48, p = 0.003), as well as the activities of catalase (SMD = -1.91, p < 0.0001), glutathione peroxidase (SMD = -1.96, p = 0.0002) and glutathione-S-transferase (SMD = -1.62, p = 0.009) declined remarkably, resulting in decreased total antioxidant capacity (SMD = -1.77, p < 0.00001). Besides, the activity of superoxide dismutase showed no statistical difference between infertility patients and controls (SMD = -0.51, p = 0.07). Conclusions Our meta-analysis suggests that oxidative stress in seminal plasma resulting from decreased antioxidant defense are associated with male infertility. Methods Using PubMed, EMBASE, CNKI, VIP, and Wanfang database, we searched for literature reporting the detection of oxidative stress markers in the seminal plasma of male infertility published up to June 2017. Standardized mean differences (SMDs) and 95% confidence intervals (95%CI) were calculated for the finally analysis.
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Affiliation(s)
- Chao Huang
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiyue Cao
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Dejiang Pang
- Department of Biochemistry and Molecular Biology, West China School of Preclinical and Forensic Medicine, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Chao Li
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Qihui Luo
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuanfeng Zou
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Bin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Lixia Li
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Anchun Cheng
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhengli Chen
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
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Durairajanayagam D. Lifestyle causes of male infertility. Arab J Urol 2018; 16:10-20. [PMID: 29713532 PMCID: PMC5922227 DOI: 10.1016/j.aju.2017.12.004] [Citation(s) in RCA: 146] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 12/05/2017] [Accepted: 12/12/2017] [Indexed: 01/08/2023] Open
Abstract
Objective To examine the potential effects of lifestyle factors on male reproductive health. Evidence of a global decline in human sperm quality over recent decades has been accumulating. Environmental, occupational, and modifiable lifestyle factors may contribute to this decline. This review focuses on key lifestyle factors that are associated with male infertility such as smoking cigarettes, alcohol intake, use of illicit drugs, obesity, psychological stress, advanced paternal age, dietary practices, and coffee consumption. Other factors such as testicular heat stress, intense cycling training, lack of sleep and exposure to electromagnetic radiation from mobile phone use are briefly discussed. Materials and method A comprehensive literature search was performed to identify and synthesise all relevant information, mainly from within the last decade, on the major lifestyle factors associated with male infertility and semen quality. Database searches were limited to reports published in English only. A manual search of bibliographies of the reports retrieved was conducted to identify additional relevant articles. Results In all, 1012 articles were identified from the database search and after reviewing the titles and abstract of the reports, 104 articles met the inclusion criteria. Of these, 30 reports were excluded as the full-text could not be retrieved and the abstract did not have relevant data. The remaining 74 reports were reviewed for data on association between a particular lifestyle factor and male infertility and were included in the present review. Conclusion The major lifestyle factors discussed in the present review are amongst the multiple potential risk factors that could impair male fertility. However, their negative impact may well be mostly overcome by behaviour modification and better lifestyle choices. Greater awareness and recognition of the possible impact of these lifestyle factors are important amongst couples seeking conception.
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Key Words
- AAS, anabolic–androgenic steroids
- APA, advanced paternal age
- ART, assisted reproductive technology
- ASIH, anabolic steroid-induced hypogonadism
- BMI, body mass index
- Chk1, checkpoint kinase 1
- ECS, endogenous cannabinoid system
- GnIH, gonadotropin-inhibitory hormone
- HADS, Hospital Anxiety and Depression Score
- HPA, hypothalamus–pituitary–adrenal
- HPG, hypothalamus–pituitary–gonadal
- ICSI, intracytoplasmic sperm injection
- IUI, intrauterine insemination
- IVF, in vitro fertilisation
- Lifestyle
- MMP, mitochondrial membrane potential
- Male infertility
- ROS, reactive oxygen species
- Risk factors
- SOD, superoxide dismutase
- Semen quality
- Sperm DNA fragmentation
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Affiliation(s)
- Damayanthi Durairajanayagam
- Address: Discipline of Physiology, Faculty of Medicine, Sungai Buloh Campus, Universiti Teknologi MARA, Jalan Hospital, 47000 Sungai Buloh, Selangor, Malaysia. Fax: +60 3 6126 5224.
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24
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Ullah R, Batool A, Wazir M, Naz R, Rahman TU, Wahab F, Shahab M, Fu J. Gonadotropin inhibitory hormone and RF9 stimulate hypothalamic-pituitary-adrenal axis in adult male rhesus monkeys. Neuropeptides 2017; 66:1-7. [PMID: 28757099 DOI: 10.1016/j.npep.2017.07.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 07/19/2017] [Accepted: 07/23/2017] [Indexed: 12/17/2022]
Abstract
Stress activates gonadotropin inhibitory hormone (GnIH), hypothalamic-pituitary-adrenal axis (HPA-axis) and represses hypothalamic-pituitary-gonadal axis (HPG-axis) but RF9 administration relieves stress-induced repression of the HPG-axis. Importantly, it was not known whether GnIH signaling and RF9 synthetic peptide modulate the HPA axis. To assess this, mammalian orthologs of GnIH (RFRP-1 and RFRP-3) and RF9 were administered to intact adult male rhesus monkeys. RFRP-1 (125μg/animal), RFRP-3 (250μg/animal) and RF9 (0.1mg/kg BW) were intravenously (iv) injected into normal fed (n=4) monkeys. Additionally, a single bolus iv injection of RF9 (0.1mg/kg BW) was also administered to 48h fasted monkeys (n=4) to check the effects of RF9 signaling on an activated HPA-axis. Serial blood samples were collected, centrifuged and the obtained plasma was used for the analysis of cortisol by specific enzyme immunoassay. RFRP-1 treatment significantly increased cortisol levels while RFRP-3 increased the plasma cortisol, but the effect was non-significant. RF9 treatment significantly increased cortisol levels in normal fed animals. In contrast, RF9 injection did not significantly alter circulating cortisol in fasted monkeys. In conclusion, our results suggest stimulatory action of RFRPs and RF9 on the HPA axis in the adult male monkeys. However, the mechanism and site of action of RFRP-1 and RF9 along the HPA-axis is still unknown. Therefore, further studies are needed to decipher the mechanism and site of action of RFRPs and RF9 on the HPA axis in primates.
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Affiliation(s)
- Rahim Ullah
- Department of Endocrinology, Children's Hospital of Zhejiang University School of Medicine, Hangzhou 310051, China; Laboratory of Reproductive Neuroendocrinology, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Aalia Batool
- Laboratory of Reproductive Neuroendocrinology, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan; The State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chaoyang District, Beijing 100101, China
| | - Madiha Wazir
- Laboratory of Reproductive Neuroendocrinology, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Rabia Naz
- Laboratory of Reproductive Neuroendocrinology, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Tanzil Ur Rahman
- Laboratory of Reproductive Neuroendocrinology, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan; Department of Pathology and Pathophysiology, Key Laboratory of Reproductive Genetics, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Fazal Wahab
- Platform Degenerative Diseases, German Primate Center, Leibniz Institute for Primate Research, Kellnerweg 4, D-37077 Göttingen, Germany
| | - Muhammad Shahab
- Laboratory of Reproductive Neuroendocrinology, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
| | - Junfen Fu
- Department of Endocrinology, Children's Hospital of Zhejiang University School of Medicine, Hangzhou 310051, China.
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Lee SH, Choi KH, Cha KM, Hwang SY, Park UK, Jeong MS, Hong JY, Han CK, In G, Kopalli SR, Kim SK. Protective effects of Korean Red Ginseng against sub-acute immobilization stress-induced testicular damage in experimental rats. J Ginseng Res 2017; 43:125-134. [PMID: 30662301 PMCID: PMC6323174 DOI: 10.1016/j.jgr.2017.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 09/19/2017] [Accepted: 09/28/2017] [Indexed: 12/15/2022] Open
Abstract
Background Excessive stress causes varied physiological and psychological disorders including male reproductive problems. Here, we attempted to investigate the protective effects of Korean Red Ginseng (Panax ginseng Meyer; KRG) against sub-acute immobilization stress-induced testicular damage in experimental rats. Methods Male rats (age, 4 wk; weight, 60–70 g) were divided into four groups (n = 8 in each group): normal control group, immobilization control group, immobilization group treated with 100 mg/kg of KRG daily, and immobilization group treated with 200 mg/kg of KRG daily. Normal control and immobilization control groups received vehicle only. KRG (100 mg/kg and 200 mg/kg) was mixed in the standard diet powder and fed daily for 6 mo. Parameters such as organ weight, blood chemistry, sperm kinematic values, and expression levels of testicular-related molecules were measured using commercially available kits, Western blotting, and reverse transcription polymerase chain reaction. Results Data revealed that KRG restored the altered testis and epididymis weight in immobilization stress-induced rats significantly (p < 0.05). Further, KRG ameliorated the altered blood chemistry and sperm kinematic values when compared with the immobilization control group and attenuated the altered expression levels of spermatogenesis-related proteins (nectin-2, cAMP responsive element binding protein 1, and inhibin-⍺), sex hormone receptors (androgen receptor, luteinizing hormone receptor, and follicle-stimulating hormone receptor), and antioxidant-related enzymes (glutathione S-transferase m5, peroxiredoxin-4, and glutathione peroxidase 4) significantly in the testes of immobilization stress-induced rats. Conclusion KRG protected immobilization stress-induced testicular damage and fertility factors in rats, thereby indicating its potential in the treatment of stress-related male sterility.
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Affiliation(s)
- Sang-Ho Lee
- Department of Biomedical Chemistry, College of Biomedical & Health Science, Konkuk University, Chungju, Republic of Korea
| | - Kyung-Hwa Choi
- Department of Urology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea
| | - Kyu-Min Cha
- Department of Biomedical Chemistry, College of Biomedical & Health Science, Konkuk University, Chungju, Republic of Korea
| | - Seock-Yeon Hwang
- Department of Biomedical Laboratory Science, College of Health and Medical Science, Daejeon University, Daejeon, Republic of Korea
| | - Un-Kyu Park
- Department of Biomedical Laboratory Science, College of Health and Medical Science, Daejeon University, Daejeon, Republic of Korea
| | - Min-Sik Jeong
- Department of Biomedical Chemistry, College of Biomedical & Health Science, Konkuk University, Chungju, Republic of Korea
| | - Jae-Yup Hong
- Department of Urology, CHA Bundang Medical Center, CHA University, Seongnam, Republic of Korea
| | - Chang-Kyun Han
- Botanical Drug Laboratory, Korea Ginseng Research Institute, Korea Ginseng Corporation, Daejeon, Republic of Korea
| | - Gyo In
- Botanical Drug Laboratory, Korea Ginseng Research Institute, Korea Ginseng Corporation, Daejeon, Republic of Korea
| | - Spandana Rajendra Kopalli
- Department of Biomedical Chemistry, College of Biomedical & Health Science, Konkuk University, Chungju, Republic of Korea
| | - Si-Kwan Kim
- Department of Biomedical Chemistry, College of Biomedical & Health Science, Konkuk University, Chungju, Republic of Korea
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RFamide-related peptide-3 (RFRP-3) suppresses sexual maturation in a eusocial mammal. Proc Natl Acad Sci U S A 2017; 114:1207-1212. [PMID: 28096421 DOI: 10.1073/pnas.1616913114] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Neuroendocrine mechanisms underlying social inhibition of puberty are not well understood. Here, we use a model exhibiting the most profound case of pubertal suppression among mammals to explore a role for RFamide-related peptide-3 [RFRP-3; mammalian ortholog to gonadotropin-inhibitory hormone (GnIH)] in neuroendocrine control of reproductive development. Naked mole rats (NMRs) live in sizable colonies where breeding is monopolized by two to four dominant animals, and no other members exhibit signs of puberty throughout their lives unless they are removed from the colony. Because of its inhibitory action on the reproductive axis in other vertebrates, we investigated the role of RFRP-3 in social reproductive suppression in NMRs. We report that RFRP-3 immunofluorescence expression patterns and RFRP-3/GnRH cross-talk are largely conserved in the NMR brain, with the exception of the unique presence of RFRP-3 cell bodies in the arcuate nucleus (Arc). Immunofluorescence comparisons revealed that central expression of RFRP-3 is altered by reproductive status, with RFRP-3 immunoreactivity enhanced in the paraventricular nucleus, dorsomedial nucleus, and Arc of reproductively quiescent NMRs. We further observed that exogenous RFRP-3 suppresses gonadal steroidogenesis and mating behavior in NMRs given the opportunity to undergo puberty. Together, our findings establish a role for RFRP-3 in preserving reproductive immaturity, and challenge the view that stimulatory peptides are the ultimate gatekeepers of puberty.
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Ullah R, Shen Y, Zhou YD, Huang K, Fu JF, Wahab F, Shahab M. Expression and actions of GnIH and its orthologs in vertebrates: Current status and advanced knowledge. Neuropeptides 2016; 59:9-20. [PMID: 27255391 DOI: 10.1016/j.npep.2016.05.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/01/2016] [Accepted: 05/23/2016] [Indexed: 12/20/2022]
Abstract
The physiology of reproduction is very complex and is regulated by multiple factors, including a number of hypothalamic neuropeptides. In last few decades, various neuropeptides have been discovered to be involved in stimulation or inhibition of reproduction. In 2000, Tsutsui and colleagues uncovered gonadotropin-inhibitory hormone (GnIH), a neuropeptide generating inhibitory drive to the reproductive axis, in the brain of Coturnix quail. Afterward, GnIH orthologs were discovered in other vertebrates from fish to mammals including human. In these vertebrates, all the discovered GnIH and its ortholgs have LPXRFamide (X=L or Q) sequence at C-terminus. GnIH orthologs of mammals and primates are also termed as RFamide-related peptide (RFRP)-1 and -3 that too have an LPXRFamide (X=L or Q) motif at their C-terminus. GnIH and its orthologs form a member of the RFamide peptide family. GnIH signals via its canonical G protein coupled receptor 147 (GPR147). Both GnIH and GPR147 are expressed in hypothalamus and other brain regions. Besides actions through the hypothalamic GnRH and kisspeptinergic neurons, GnIH-GPR147 signaling exerts inhibitory effect on the reproductive axis via pituitary gonadotropes and directly at gonadal level. Various factors including availability and quality of food, photoperiod, temperature, social interaction, various stresses and some diseases modulate GnIH-GPR147 signaling. In this review, we have discussed expression and actions of GnIH and its orthologs in vertebrates. Special emphasis is given on the role of GnIH-GPR147 signaling pathway in the regulation of reproduction. We have also reviewed and discussed currently available literature on the participation of GnIH-GPR147 signaling pathway in the stress modulation of reproduction.
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Affiliation(s)
- Rahim Ullah
- Department of Endocrinology, Children Hospital of Zhejiang University, School of Medicine, Zhejiang University, Hangzhou, China; Laboratory of Reproductive Neuroendocrinology, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan; Key Laboratory of Medical Neurobiology of Ministry of Health and Zhejiang Province, Department of Neurobiology, School of Medicine, Zhejiang University, Hangzhou 310058, PR China
| | - Yi Shen
- Key Laboratory of Medical Neurobiology of Ministry of Health and Zhejiang Province, Department of Neurobiology, School of Medicine, Zhejiang University, Hangzhou 310058, PR China
| | - Yu-Dong Zhou
- Key Laboratory of Medical Neurobiology of Ministry of Health and Zhejiang Province, Department of Neurobiology, School of Medicine, Zhejiang University, Hangzhou 310058, PR China
| | - Ke Huang
- Laboratory of Reproductive Neuroendocrinology, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan; Laboratory of Reproductive Neuroendocrinology, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Jun-Fen Fu
- Department of Endocrinology, Children Hospital of Zhejiang University, School of Medicine, Zhejiang University, Hangzhou, China.
| | - Fazal Wahab
- Stem Cell Biology Unit, German Primate Center, Leibniz-Institute for Primate Research, Kellnerweg 4, 37077 Gottingen, Germany
| | - Muhammad Shahab
- Laboratory of Reproductive Neuroendocrinology, Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
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Grilo NM, Correia MJ, Sequeira C, Harjivan SG, Caixas U, Diogo LN, Marques MM, Monteiro EC, Antunes AMM, Pereira SA. Efavirenz biotransformation as an up-stream event of mood changes in HIV-infected patients. Toxicol Lett 2016; 260:28-35. [PMID: 27543169 DOI: 10.1016/j.toxlet.2016.08.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 08/09/2016] [Accepted: 08/13/2016] [Indexed: 01/21/2023]
Abstract
Efavirenz is a drug of choice for adults and children infected with the human immunodeficiency virus. Notably, up to 35% of patients on efavirenz suffer from mood changes. This work aimed to investigate efavirenz biotransformation into 8-hydroxy-efavirenz as an up-stream event of mood changes and to evaluate the suitability of 8-hydroxy-efavirenz biomonitoring for the minimization of these manifestations. A case-control study with two age-matched groups of HIV-infected male patients was performed in a group without adverse central nervous system complaints (28 patients) and a group presenting mood changes (14 patients). The plasma concentration of non-conjugated 8-hydroxy-efavirenz was higher in patients with mood changes (p=0.020). An association between efavirenz and 8-hydroxy-efavirenz-glucuronide was found (Spearman r=0.414, p<0.010), only within therapeutic efavirenz concentrations. This correlation was not observed in patients with toxic (>4mg/L) plasma concentrations of the parent drug. We conclude that metabolism to 8-hydroxy-efavirenz is associated with efavirenz-related mood changes, which suggests that the concentration of this metabolite is a suitable parameter for therapeutic drug monitoring aimed at controlling these manifestations. Moreover, our data suggest that 8-hydroxy-efavirenz is able to cross the blood-brain barrier and that the peripheral detoxification of 8-hydroxy-efavirenz by glucuronidation may be inhibited by toxic efavirenz concentrations.
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Affiliation(s)
- Nádia M Grilo
- Centro de Estudos de Doenças Crónicas (CEDOC), NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1150-052, Lisboa, Portugal
| | - M João Correia
- Centro de Estudos de Doenças Crónicas (CEDOC), NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1150-052, Lisboa, Portugal
| | - Catarina Sequeira
- Centro de Estudos de Doenças Crónicas (CEDOC), NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1150-052, Lisboa, Portugal
| | - Shrika G Harjivan
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Umbelina Caixas
- Centro de Estudos de Doenças Crónicas (CEDOC), NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1150-052, Lisboa, Portugal; Centro Hospitalar de Lisboa Central, Lisboa, EPE, 1150-199, Lisboa, Portugal
| | - Lucília N Diogo
- Centro de Estudos de Doenças Crónicas (CEDOC), NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1150-052, Lisboa, Portugal
| | - M Matilde Marques
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Emília C Monteiro
- Centro de Estudos de Doenças Crónicas (CEDOC), NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1150-052, Lisboa, Portugal
| | - Alexandra M M Antunes
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Sofia A Pereira
- Centro de Estudos de Doenças Crónicas (CEDOC), NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1150-052, Lisboa, Portugal.
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A potential biomarker for fatigue: Oxidative stress and anti-oxidative activity. Biol Psychol 2016; 118:88-93. [PMID: 27224647 DOI: 10.1016/j.biopsycho.2016.05.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 03/01/2016] [Accepted: 05/15/2016] [Indexed: 11/21/2022]
Abstract
We sought to determine whether oxidative stress and anti-oxidative activity could act as biomarkers that discriminate patients with chronic fatigue syndrome (CFS) from healthy volunteers at acute and sub-acute fatigue and resting conditions. We calculated the oxidative stress index (OSI) from reactive oxygen metabolites-derived compounds (d-ROMs) and the biological antioxidant potential (BAP). We determined changes in d-ROMs, BAP, and OSI in acute and sub-acute fatigue in two healthy groups, and compared their values at rest between patients with CFS (diagnosed by Fukuda 1994 criteria) and another group of healthy controls. Following acute fatigue in healthy controls, d-ROMs and OSI increased, and BAP decreased. Although d-ROMs and OSI were significantly higher after sub-acute fatigue, BAP did not decrease. Resting condition yielded higher d-ROMs, higher OSI, and lower BAP in patients with CFS than in healthy volunteers, but lower d-ROMs and OSI when compared with sub-acute controls. BAP values did not significantly differ between patients with CFS and controls in the sub-acute condition. However, values were significantly higher than in the resting condition for controls. Thus, measured of oxidative stress (d-ROMS) and anti-oxidative activity (BAP) might be useful for discriminating acute, sub-acute, and resting fatigue in healthy people from patients with CFS, or for evaluating fatigue levels in healthy people.
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Micheli L, Cerretani D, Collodel G, Menchiari A, Moltoni L, Fiaschi AI, Moretti E. Evaluation of enzymatic and non-enzymatic antioxidants in seminal plasma of men with genitourinary infections, varicocele and idiopathic infertility. Andrology 2016; 4:456-64. [DOI: 10.1111/andr.12181] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 02/08/2016] [Accepted: 02/09/2016] [Indexed: 01/25/2023]
Affiliation(s)
- L. Micheli
- Department of Medical and Surgical Sciences and Neurosciences; University of Siena; Siena Italy
| | - D. Cerretani
- Department of Medical and Surgical Sciences and Neurosciences; University of Siena; Siena Italy
| | - G. Collodel
- Department of Molecular and Developmental Medicine; University of Siena; Siena Italy
| | - A. Menchiari
- Department of Business and Law; University of Siena; Siena Italy
| | - L. Moltoni
- Department of Medical and Surgical Sciences and Neurosciences; University of Siena; Siena Italy
| | - A. I. Fiaschi
- Department of Medical and Surgical Sciences and Neurosciences; University of Siena; Siena Italy
| | - E. Moretti
- Department of Molecular and Developmental Medicine; University of Siena; Siena Italy
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Mohanty G, Swain N, Goswami C, Kar S, Samanta L. Histone retention, protein carbonylation, and lipid peroxidation in spermatozoa: Possible role in recurrent pregnancy loss. Syst Biol Reprod Med 2016; 62:201-12. [DOI: 10.3109/19396368.2016.1148798] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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32
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Nordkap L, Jensen TK, Hansen ÅM, Lassen TH, Bang AK, Joensen UN, Jensen MB, Skakkebæk NE, Jørgensen N. Psychological stress and testicular function: a cross-sectional study of 1,215 Danish men. Fertil Steril 2016; 105:174-87.e1-2. [DOI: 10.1016/j.fertnstert.2015.09.016] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 08/21/2015] [Accepted: 09/10/2015] [Indexed: 12/16/2022]
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Intasqui P, Antoniassi MP, Camargo M, Nichi M, Carvalho VM, Cardozo KHM, Zylbersztejn DS, Bertolla RP. Differences in the seminal plasma proteome are associated with oxidative stress levels in men with normal semen parameters. Fertil Steril 2015; 104:292-301. [DOI: 10.1016/j.fertnstert.2015.04.037] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/29/2015] [Accepted: 04/29/2015] [Indexed: 10/23/2022]
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Lin H, Yuan KM, Zhou HY, Bu T, Su H, Liu S, Zhu Q, Wang Y, Hu Y, Shan Y, Lian QQ, Wu XY, Ge RS. Time-course changes of steroidogenic gene expression and steroidogenesis of rat Leydig cells after acute immobilization stress. Int J Mol Sci 2014; 15:21028-44. [PMID: 25405735 PMCID: PMC4264210 DOI: 10.3390/ijms151121028] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 10/26/2014] [Accepted: 10/28/2014] [Indexed: 11/21/2022] Open
Abstract
Leydig cells secrete testosterone, which is essential for male fertility and reproductive health. Stress increases the secretion of glucocorticoid (corticosterone, CORT; in rats), which decreases circulating testosterone levels in part through a direct action by binding to the glucocorticoid receptors (NR3C1) in Leydig cells. The intratesticular CORT level is dependent on oxidative inactivation of glucocorticoid by 11β-hydroxysteroid dehydrogenase 1 (HSD11B1) in Leydig cells. In the present study, we investigated the time-course changes of steroidogenic gene expression levels after acute immobilization stress in rats. The plasma CORT levels were significantly increased 0.5, 1, 3 and 6 h after immobilization stress, while plasma testosterone levels were significantly reduced 3 and 6 h, after stress and luteinizing hormone (LH) did not change. Immobilization stress caused the down-regulation of Scarb1, Star and Cyp17a1 expression levels in the rat testis starting at the first hour of stress, ahead of the significant decreases of plasma testosterone levels. Other mRNA levels, including Cyp11a1, Hsd3b1 and Hsd17b3, began to decline after 3 h. Hsd11b1 and Nos2 mRNA levels did not change during the course of stress. Administration of glucocorticoid antagonist RU486 significantly restored plasma testosterone levels. In conclusion, Scarb1, Star and Cyp17a1 expression levels are more sensitive to acute stress, and acute immobilization stress causes the decline of the steroidogenic pathway via elevating the levels of glucocorticoid, which binds to NR3C1 in Leydig cells to inhibit steroidogenic gene expression.
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Affiliation(s)
- Han Lin
- Department of Anesthesiology of the Second Affiliated Hospital.
| | - Kai-ming Yuan
- Department of Anesthesiology of the Second Affiliated Hospital.
| | - Hong-yu Zhou
- Department of Pharmacology of School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China.
| | - Tiao Bu
- Department of Anesthesiology of the Second Affiliated Hospital.
| | - Huina Su
- Department of Anesthesiology of the Second Affiliated Hospital.
| | - Shiwen Liu
- Department of Anesthesiology of the Second Affiliated Hospital.
| | - Qiqi Zhu
- Department of Anesthesiology of the Second Affiliated Hospital.
| | - Yiyan Wang
- Department of Anesthesiology of the Second Affiliated Hospital.
| | - Yuanyuan Hu
- Department of Anesthesiology of the Second Affiliated Hospital.
| | - Yuanyuan Shan
- Research Academy of Reproductive Biomedicine, Wenzhou Medical University, Wenzhou 325000, Zhejiang, China.
| | - Qing-quan Lian
- Department of Pharmacology of School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China.
| | - Xiao-yun Wu
- Huzhou Maternity & Child Care Hospital, Huzhou 313000, Zhejiang, China.
| | - Ren-shan Ge
- Department of Anesthesiology of the Second Affiliated Hospital.
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Janevic T, Kahn LG, Landsbergis P, Cirillo PM, Cohn BA, Liu X, Factor-Litvak P. Effects of work and life stress on semen quality. Fertil Steril 2014; 102:530-8. [PMID: 24856463 DOI: 10.1016/j.fertnstert.2014.04.021] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 04/14/2014] [Accepted: 04/14/2014] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To evaluate associations between work-related stress, stressful life events, and perceived stress and semen quality. DESIGN Cross-sectional analysis. SETTING Northern California. PATIENT(S) 193 men from the Child Health and Development Studies evaluated between 2005-2008. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Measures of stress including job strain, perceived stress, and stressful life events; outcome measures of sperm concentration, percentage of motile sperm, and percentage of morphologically normal sperm. RESULT(S) We found an inverse association between perceived stress score and sperm concentration (estimated coefficient b=-0.09×10(3)/mL; 95% confidence interval [CI]=-0.18, -0.01), motility (b=-0.39; 95% CI=-0.79, 0.01), and morphology (b=-0.14; 95% CI, -0.25, -0.04) in covariate-adjusted linear regression analyses. Men who experienced two or more stressful life events in the past year compared with no stressful events had a lower percentage of motile sperm (b=-8.22; 95% CI, -14.31, -2.13) and a lower percentage of morphologically normal sperm (b=-1.66; 95% CI, -3.35, 0.03) but a similar sperm concentration. Job strain was not associated with semen parameters. CONCLUSION(S) In this first study to examine all three domains of stress, perceived stress and stressful life events but not work-related stress were associated with semen quality.
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Affiliation(s)
- Teresa Janevic
- Department of Epidemiology, Rutgers School of Public Health, Rutgers, the State University of New Jersey, New Brunswick, New Jersey.
| | - Linda G Kahn
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
| | - Paul Landsbergis
- Department of Environmental and Occupational Health Sciences, School of Public Health, Downstate Medical Center, State University of New York, Brooklyn, New York
| | - Piera M Cirillo
- Child Health and Development Studies, Center for Research on Women's and Children's Health, Public Health Institute, Berkeley, California
| | - Barbara A Cohn
- Child Health and Development Studies, Center for Research on Women's and Children's Health, Public Health Institute, Berkeley, California
| | - Xinhua Liu
- Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, New York
| | - Pam Factor-Litvak
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York
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R K, D M A, C N, S N W, C D. Oxidative imbalance and anxiety disorders. Curr Neuropharmacol 2014; 12:193-204. [PMID: 24669212 PMCID: PMC3964749 DOI: 10.2174/1570159x11666131120223530] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 05/15/2013] [Accepted: 11/02/2013] [Indexed: 01/22/2023] Open
Abstract
The oxidative imbalance appears to have an important role in anxiety development. Studies in both humans and animals have shown a strong correlation between anxiety and oxidative stress. In humans, for example, the increased malondialdehyde levels and discrepancies in antioxidant enzymes in erythrocytes have been observed. In animals, several studies also show that anxiety-like behavior is related to the oxidative imbalance. Moreover, anxiety-like behavior can be caused by pharmacological-induced oxidative stress. Studies using knockout or overexpression of antioxidant enzymes have shown a relationship between anxiety-like behavior and oxidative stress. Related factors of oxidative stress that could influence anxious behavior are revised, including impaired function of different mitochondrial proteins, inflammatory cytokines, and neurotrophic factors. It has been suggested that a therapy specifically focus in reducing reactive species production may have a beneficial effect in reducing anxiety. However, the neurobiological pathways underlying the effect of oxidative stress on anxiety symptoms are not fully comprehended. The challenge now is to identify the oxidative stress mechanisms likely to be involved in the induction of anxiety symptoms. Understanding these pathways could help to clarify the neurobiology of the anxiety disorder and provide tools for new discovery in therapies and preventive strategies.
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Affiliation(s)
- Krolow R
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil
| | - Arcego D M
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil
| | - Noschang C
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil
| | - Weis S N
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil
| | - Dalmaz C
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil
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Kanďár R, Hájková N. Assay of total glutathione and glutathione disulphide in seminal plasma of male partners of couples presenting for a fertility evaluation. Andrologia 2013; 46:1079-88. [DOI: 10.1111/and.12176] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/19/2013] [Indexed: 11/30/2022] Open
Affiliation(s)
- R. Kanďár
- Department of Biological and Biochemical Sciences; Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
| | - N. Hájková
- Department of Biological and Biochemical Sciences; Faculty of Chemical Technology; University of Pardubice; Pardubice Czech Republic
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Impact of Seminal Chemical Elements on the Oxidative Balance in Bovine Seminal Plasma and Spermatozoa. J Vet Med 2013; 2013:125096. [PMID: 26464901 PMCID: PMC4590845 DOI: 10.1155/2013/125096] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Revised: 07/22/2013] [Accepted: 08/07/2013] [Indexed: 12/05/2022] Open
Abstract
Mutual relationships between selected chemical elements (Na, K, Fe, Cu, Mg, and Zn), basic motility characteristics (motility and progressive motility), and markers of the oxidative balance (superoxide dismutase, catalase, glutathione, albumin, and malondialdehyde) were investigated in bovine seminal plasma and spermatozoa. Computer assisted sperm analysis was used to assess the motility parameters; mineral concentrations were determined by the voltammetric method and flame absorption spectrophotometry; antioxidants and malondialdehyde were evaluated by UV/VIS spectrophotometry. Concentrations of chemical elements in both seminal fractions were in the following descending order: Na > K > Zn > Mg > Fe > Cu. Higher amounts of all minerals and nonenzymatic antioxidants were detected in the seminal plasma (P < 0.01; P < 0.001), while higher MDA concentration and activity of enzymatic antioxidants were recorded in the cell lysates (P < 0.01; P < 0.001). Na, Fe, Cu, Mg, and Zn were positively correlated with the motility and antioxidant parameters (P < 0.05; P < 0.01; P < 0.001). Inversely, K exhibited the positive associations with malondialdehyde (P < 0.05). This study demonstrates that most chemical elements are integral components of bovine semen and are needed for the protection against oxidative stress development.
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Nakhaee A, Shahabizadeh F, Erfani M. Protein and lipid oxidative damage in healthy students during and after exam stress. Physiol Behav 2013; 118:118-21. [PMID: 23688949 DOI: 10.1016/j.physbeh.2013.05.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 03/20/2013] [Accepted: 05/08/2013] [Indexed: 01/22/2023]
Abstract
Oxidative damage at cellular level is thought to be one of the mechanisms in the pathogenesis of psychological stress (anxiety). The aim of this study was to investigate lipid and protein oxidative damage in exam anxiety conditions. Blood samples were collected in two stages (during the exam period and post vacation) from 51 healthy female students after responding to Beck Anxiety Inventory (BAI) and test anxiety questionnaire. Protein carbonyl, total thiol and malondialdehyde (MDA) levels were determined in serum. Participants reported significantly higher levels of subjective anxiety during the exam period than post vacation. Also the level of total thiol was significantly lower during the exam period compared with post vacation (p<0.001). Meanwhile, protein carbonyl and MDA levels during the exams were significantly higher than those in post-exam period (p<0.01). During the exam period, there was a negative correlation between serum total thiol levels and the severity of anxiety (r=-0.45, p<0.01). A significant positive correlation between the changes in serum protein carbonyl and MDA levels, also between those markers and anxiety score was found during the exam period. The high level of protein carbonyl and MDA, also low level of total thiol during the exam period demonstrated an oxidative damage to proteins and lipids in stress conditions. Our results suggest that oxidative damage to cellular compounds may be one of the mechanisms involved in the pathogenesis of anxiety.
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Affiliation(s)
- Alireza Nakhaee
- Cellular and Molecular Biology Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
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40
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Tvrdá E, Kňažická Z, Lukáčová J, Schneidgenová M, Goc Z, Greń A, Szabó C, Massányi P, Lukáč N. The impact of lead and cadmium on selected motility, prooxidant and antioxidant parameters of bovine seminal plasma and spermatozoa. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2013; 48:1292-1300. [PMID: 23647120 DOI: 10.1080/10934529.2013.777243] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The aim of this study was to investigate the effects of lead (Pb) and cadmium (Cd) content on basic motility characteristics (motility-MOT, progressive motility-PROG) as well as selected markers of the prooxidant-antioxidant balance (catalase-CAT, glutathione-GSH, malondialdehyde-MDA) in bovine seminal plasma and spermatozoa. Twenty five semen samples were collected from breeding bulls and used in the study. Motility analysis was carried out using the Computer Assisted Sperm Analysis (CASA) system. The samples were centrifuged, fractions of seminal plasma and spermatozoa were separated, lysates were prepared from the sperm cell fractions. Pb and Cd concentrations were determined by the voltametric method (ASV), antioxidants and MDA were analyzed by UV/Vis spectrophotometry. The analysis showed that the average concentration of Pb in the seminal plasma was 0.23 ± 0.02 μg/mL, while its amount in the sperm cells was significantly higher (0.41 ± 0.07 μg/mL; P < 0.05). The average Cd content in bovine seminal fractions was similar and non-significant: 0.09 ± 0.01 μg/mL in the seminal plasma and 0.11 ± 0.01 μg/mL in spermatozoa (P > 0.05). The correlation analysis revealed that both heavy metals were significantly negatively correlated with MOT and PROG (P < 0.05; P < 0.01; P < 0.001), CAT (P < 0.05; P < 0.01) as well as GSH (P < 0.05; P < 0.01) but significantly positively associated with MDA as the marker of lipid peroxidation (P < 0.05; P < 0.01). Moreover the samples were categorized in three quality groups (Excellent, Good, Moderate) according to their motility values. The lowest Pb, Cd and MDA concentrations but the best antioxidant characteristics were found in samples of the best quality, moderate quality samples exhibited the highest Pb, Cd and MDA content together with the worst antioxidant capacity. This study demonstrates that Pb and Cd are serious toxic elements, which are able to increase the risk of seminal oxidative stress development and a subsequent decrease of male fertility.
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Affiliation(s)
- Eva Tvrdá
- Department of Animal Physiology, Slovak University of Agriculture, Nitra, Slovakia.
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41
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Szanton SL, Rifkind JM, Mohanty JG, Miller ER, Thorpe RJ, Nagababu E, Epel ES, Zonderman AB, Evans MK. Racial discrimination is associated with a measure of red blood cell oxidative stress: a potential pathway for racial health disparities. Int J Behav Med 2012; 19:489-95. [PMID: 21913047 PMCID: PMC3496810 DOI: 10.1007/s12529-011-9188-z] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND There are racial health disparities in many conditions for which oxidative stress is hypothesized to be a precursor. These include cardiovascular disease, diabetes, and premature aging. Small clinical studies suggest that psychological stress may increase oxidative stress. However, confirmation of this association in epidemiological studies has been limited by homogenous populations and unmeasured potential confounders. PURPOSE We tested the cross-sectional association between self-reported racial discrimination and red blood cell (RBC) oxidative stress in a biracial, socioeconomically heterogeneous population with well-measured confounders. METHODS We performed a cross-sectional analysis of a consecutive series of 629 participants enrolled in the Healthy Aging in Neighborhoods of Diversity across the Life Span (HANDLS) study. Conducted by the National Institute on Aging Intramural Research Program, HANDLS is a prospective epidemiological study of a socioeconomically diverse cohort of 3,721 Whites and African Americans aged 30-64 years. Racial discrimination was based on self-report. RBC oxidative stress was measured by fluorescent heme degradation products. Potential confounders were age, smoking status, obesity, and C-reactive protein. RESULTS Participants had a mean age of 49 years (SD = 9.27). In multivariable linear regression models, racial discrimination was significantly associated with RBC oxidative stress (Beta = 0.55, P < 0.05) after adjustment for age, smoking, C-reactive protein level, and obesity. When stratified by race, discrimination was not associated with RBC oxidative stress in Whites but was associated significantly for African Americans (Beta = 0.36, P < 0.05). CONCLUSIONS These findings suggest that there may be identifiable cellular pathways by which racial discrimination amplifies cardiovascular and other age-related disease risks.
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Atig F, Raffa M, Habib BA, Kerkeni A, Saad A, Ajina M. Impact of seminal trace element and glutathione levels on semen quality of Tunisian infertile men. BMC Urol 2012; 12:6. [PMID: 22429816 PMCID: PMC3349502 DOI: 10.1186/1471-2490-12-6] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2011] [Accepted: 03/19/2012] [Indexed: 12/02/2022] Open
Abstract
Background Growing evidence indicates that oxidative stress can be a primary cause of male infertility. Non-enzymatic antioxidants play an important protective role against oxidative damages and lipid peroxidation. Human seminal plasma is a natural reservoir of antioxidants. The aim of this study was to determine glutathione (GSH) concentrations, trace element levels (zinc and selenium) and the lipid peroxidation end product, malondialdehyde (MDA), in the seminal plasma of men with different fertility potentials. Methods Semen samples from 60 fertile men (normozoospermics) and 190 infertile patients (74 asthenozoospermics, 56 oligozoospermics, and 60 teratozoospermics) were analyzed for physical and biochemical parameters. Zinc (Zn) and selenium (Se) levels were estimated by atomic absorption spectrophotometry. Total GSH (GSHt), oxidized GSH (GSSG), reduced GSH (GSHr) and MDA concentrations were measured spectrophotometrically. Results Zn and Se concentrations in seminal plasma of normozoospermics were more elevated than the three abnormal groups. Nevertheless, only the Zn showed significant differences. On the other hand, Zn showed positive and significant correlations with sperm motility (P = 0.03, r = 0.29) and count (P < 0.01, r = 0.49); however Se was significantly correlated only with sperm motility (P < 0.01, r = 0.36). GSHt, GSSG and GSHr were significantly higher in normozoospermics than in abnormal groups. We noted a significant association between seminal GSHt and sperm motility (P = 0.03). GSSG was highly correlated to sperm motility (P < 0.001) and negatively associated to abnormal morphology (P < 0.001). GSHr was significantly associated to total sperm motility (P < 0.001) and sperm count (P = 0.01). MDA levels were significantly higher in the three abnormal groups than in normozoospermics. Rates of seminal MDA were negatively associated to sperm motility (P < 0.01; r = -0.24) and sperm concentration (P = 0.003; r = -0.35) Meanwhile, there is a positive correlation between seminal lipid peroxidation and the percentage of abnormal morphology (P = 0.008). Conclusions This report revealed that decreased seminal GSH and trace element deficiencies are implicated in low sperm quality and may be an important indirect biomarker of idiopathic male infertility. Our results sustain that the evaluation of seminal antioxidant status in infertile men is necessary and can be helpful in fertility assessment from early stages.
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Affiliation(s)
- Fatma Atig
- Unit of Reproductive Medicine, University Farhat Hached Hospital, 4000 Soussa, Tunisia.
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Strategies for reducing or preventing the generation of oxidative stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2011; 2011:194586. [PMID: 22191011 PMCID: PMC3236599 DOI: 10.1155/2011/194586] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/20/2011] [Revised: 10/20/2011] [Accepted: 10/21/2011] [Indexed: 12/14/2022]
Abstract
The reduction of oxidative stress could be achieved in three levels: by lowering exposure to environmental pollutants with oxidizing properties, by increasing levels of endogenous and exogenous antioxidants, or by lowering the generation of oxidative stress by stabilizing mitochondrial energy production and efficiency. Endogenous oxidative stress could be influenced in two ways: by prevention of ROS formation or by quenching of ROS with antioxidants. However, the results of epidemiological studies where people were treated with synthetic antioxidants are inconclusive and contradictory. Recent evidence suggests that antioxidant supplements (although highly recommended by the pharmaceutical industry and taken by many individuals) do not offer sufficient protection against oxidative stress, oxidative damage or increase the lifespan. The key to the future success of decreasing oxidative-stress-induced damage should thus be the suppression of oxidative damage without disrupting the wellintegrated antioxidant defense network. Approach to neutralize free radicals with antioxidants should be changed into prevention of free radical formation. Thus, this paper addresses oxidative stress and strategies to reduce it with the focus on nutritional and psychosocial interventions of oxidative stress prevention, that is, methods to stabilize mitochondria structure and energy efficiency, or approaches which would increase endogenous antioxidative protection and repair systems.
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Atig F, Raffa M, Ali HB, Abdelhamid K, Saad A, Ajina M. Altered antioxidant status and increased lipid per-oxidation in seminal plasma of tunisian infertile men. Int J Biol Sci 2011; 8:139-49. [PMID: 22211112 PMCID: PMC3248656 DOI: 10.7150/ijbs.8.139] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Accepted: 05/08/2011] [Indexed: 12/22/2022] Open
Abstract
Human seminal plasma is a natural reservoir of antioxidants that protect spermatozoa from oxidative damages. There is evidence in literature supports the fact that impairments in seminal antioxidant and lipid per-oxidation status play important roles in the physiopathology of male infertility. Our present study forms the first one which was carried out in Tunisia. We evaluated the antioxidant status in the seminal plasma of 120 infertile men programmed to In Vitro Fertilization (IVF) for the first tentative. Patients were characterized by an idiopathic infertility. They were divided into three groups: normozoospermics who were considered as controls (n=40), asthenozoospermics (Astheno; n=45) and oligoasthenoteratozoospermics (OAT; n=35). Seminal activities of superoxide dismutase (SOD) and glutathione peroxidase (GPX) and the levels of glutathione (GSH), zinc (Zn) and malondialdehyde (MDA) were measured. With the significant increase of the seminal activities of SOD and GPX in normozoospermics group, there were positive correlations observed between this enzymes and sperm quality. Also, significant elevated rates of seminal zinc and GSH were observed in control group, but there was contradictory associations reflecting the effects of these antioxidants on semen parameters. However, we noted significant increase of MDA levels in groups with abnormal seminogram. We showed negative associations between this per-oxidative marker and sperm parameters. These results obviously suggested that impairment on seminal antioxidants is an important risk factor for low sperm quality associated to idiopathic infertility and as a result can lead to poor IVF outcome.
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Affiliation(s)
- Fatma Atig
- Unit of Reproductive Medicine, University Farhat Hached Hospital, 4000 Sousse, Tunisia.
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Lampiao F. Variation of semen parameters in healthy medical students due to exam stress. Malawi Med J 2011; 21:166-7. [PMID: 21174930 DOI: 10.4314/mmj.v21i4.49635] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
AIM This study was aimed at investigating semen parameters that vary most in samples of healthy donors undergoing stressful examination period. METHODS Samples were left to liquefy in an incubator at 37 degrees C, 5% CO2 for 30 minutes before volume was measured. Concentration and motility parameters were measured by means of computer assisted semen analysis (CASA) using Sperm Class Analyzer (Microptic S.L, Madrid, Spain). RESULTS Sperm concentration was significantly decreased in samples donated close to the exam period as well as samples donated during the exam period when compared to samples donated at the beginning of the semester. CONCLUSION Stress levels of donors might prove to be clinically relevant and important when designing experiment protocols.
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Shiva M, Gautam AK, Verma Y, Shivgotra V, Doshi H, Kumar S. Association between sperm quality, oxidative stress, and seminal antioxidant activity. Clin Biochem 2010; 44:319-24. [PMID: 21145315 DOI: 10.1016/j.clinbiochem.2010.11.009] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 11/23/2010] [Accepted: 11/24/2010] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To determine seminal antioxidant capacity, oxidative stress markers, and their association with semen quality as oxidative stress is considered to be a major etiological factor in male infertility. SUBJECTS AND METHODS Semen samples were obtained from 138 men and categorized on the basis of sperm count, motility, and morphology. Seminal oxidative and antioxidant markers are as follows: lipid peroxidation (LPO), protein carbonyls (PC), superoxide dismutase (SOD), catalase (CAT), thiols, and ascorbic acid were determined. RESULTS Sperm count significantly correlated positively with progressive sperm motility and normal morphology. Sperm count and normal morphology showed significant negative correlation with LPO and PC. Sperm count and progressive motility showed significant positive relationship with SOD. The SOD, CAT, and thiols positively whereas LPO and PC negatively associated with elevated sperm count. CONCLUSION Insufficient antioxidant enzymes and increased oxidative stress may attribute to the risk of declining semen quality and hence protective role for antioxidant enzymes against the oxidative damage cannot be ruled out.
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Affiliation(s)
- Murarka Shiva
- Division of Reproductive and Cytotoxicology, National Institute of Occupational Health (ICMR), Ahmedabad-380016, India
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Hovatta I, Juhila J, Donner J. Oxidative stress in anxiety and comorbid disorders. Neurosci Res 2010; 68:261-75. [PMID: 20804792 DOI: 10.1016/j.neures.2010.08.007] [Citation(s) in RCA: 228] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Revised: 08/20/2010] [Accepted: 08/23/2010] [Indexed: 01/12/2023]
Abstract
Anxiety disorders, depression, and alcohol use disorder are common neuropsychiatric diseases that often occur together. Oxidative stress has been suggested to contribute to their etiology. Oxidative stress is a consequence of either increased generation of reactive oxygen species or impaired enzymatic or non-enzymatic defense against it. When excessive it leads to damage of all major classes of macromolecules, and therefore affects several fundamentally important cellular functions. Consequences that are especially detrimental to the proper functioning of the brain include mitochondrial dysfunction, altered neuronal signaling, and inhibition of neurogenesis. Each of these can further contribute to increased oxidative stress, leading to additional burden to the brain. In this review, we will provide an overview of recent work on oxidative stress markers in human patients with anxiety, depressive, or alcohol use disorders, and in relevant animal models. In addition, putative oxidative stress-related mechanisms important for neuropsychiatric diseases are discussed. Despite the considerable interest this field has obtained, the detailed mechanisms that link oxidative stress to the pathogenesis of neuropsychiatric diseases remain largely unknown. Since this pathway may be amenable to pharmacological intervention, further studies are warranted.
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Affiliation(s)
- Iiris Hovatta
- Research Program of Molecular Neurology, Faculty of Medicine, University of Helsinki, Finland.
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Li Y, Lin H, Li Y, Cao J. Association between socio-psycho-behavioral factors and male semen quality: systematic review and meta-analyses. Fertil Steril 2010; 95:116-23. [PMID: 20674912 DOI: 10.1016/j.fertnstert.2010.06.031] [Citation(s) in RCA: 191] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Revised: 05/12/2010] [Accepted: 06/15/2010] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To identify the factors associated with male semen quality from many socio-psycho-behavioral factors. DESIGN Medline/PubMed, EMBASE, and CNKI were searched to identify relevant publications for systematic review and meta-analysis. PATIENT(S) None. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Thirteen socio-psycho-behavioral factors in 57 cross-sectional studies with 29,914 participants from 26 countries/regions were involved in this review. Six factors (age, body mass index [BMI], psychological stress, smoking, alcohol, and coffee consumption) were included in meta-analyses. RESULT(S) Smoking can deteriorate all of the sperm parameters of both fertile and infertile men, but it is not risk factor for semen volume in Switzerland and Iran and for sperm density in the United States, Denmark, and Brazil; higher age and alcohol consumption are risk factors for lower semen volume; and psychological stress can lower sperm density and sperm progressive motility and increase abnormal sperm. CONCLUSION(S) This review further suggested that higher age, smoking, alcohol consumption, and psychological stress were risk factors for semen quality. These results indicated that health programs focusing on lifestyle and psychological health would be helpful for male reproductive health. Well-designed studies are needed to further identify the role of more socio-psycho-behavioral factors in male semen quality.
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Affiliation(s)
- Ying Li
- Department of Social Medicine and Health Service Management, College of Preventive Medicine, Key Lab of Medical Protection for Electromagnetic Radiation, Ministry of Education of China, Third Military Medical University, Chongqing, People's Republic of China
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Kirby ED, Geraghty AC, Ubuka T, Bentley GE, Kaufer D. Stress increases putative gonadotropin inhibitory hormone and decreases luteinizing hormone in male rats. Proc Natl Acad Sci U S A 2009; 106:11324-9. [PMID: 19541621 PMCID: PMC2698887 DOI: 10.1073/pnas.0901176106] [Citation(s) in RCA: 272] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2009] [Indexed: 11/18/2022] Open
Abstract
The subjective experience of stress leads to reproductive dysfunction in many species, including rodents and humans. Stress effects on reproduction result from multilevel interactions between the hormonal stress response system, i.e., the hypothalamic-pituitary-adrenal (HPA) axis, and the hormonal reproductive system, i.e., the hypothalamic-pituitary-gonadal (HPG) axis. A novel negative regulator of the HPG axis known as gonadotropin-inhibitory hormone (GnIH) was recently discovered in quail, and orthologous neuropeptides known as RFamide-related peptides (RFRPs) have also been identified in rodents and primates. It is currently unknown, however, whether GnIH/RFRPs influence HPG axis activity in response to stress. We show here that both acute and chronic immobilization stress lead to an up-regulation of RFRP expression in the dorsomedial hypothalamus (DMH) of adult male rats and that this increase in RFRP is associated with inhibition of downstream HPG activity. We also show that adrenalectomy blocks the stress-induced increase in RFRP expression. Immunohistochemistry revealed that 53% of RFRP cells express receptors for glucocorticoids (GCs), indicating that adrenal GCs can mediate the stress effect through direct action on RFRP cells. It is thought that stress effects on central control of reproduction are largely mediated by direct or indirect effects on GnRH-secreting neurons. Our data show that stress-induced increases in adrenal GCs cause an increase in RFRP that contributes to hypothalamic suppression of reproductive function. This novel insight into HPA-HPG interaction provides a paradigm shift for work on stress-related reproductive dysfunction and infertility, and indicates that future work on stress and reproductive system interactions must include investigation of the role of GnIH/RFRP.
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Affiliation(s)
- Elizabeth D. Kirby
- Helen Wills Neuroscience Institute, University of California– Berkeley, 3060 VLSB #3140, Berkeley, CA 94720; and
| | - Anna C. Geraghty
- Integrative Biology, University of California–Berkeley, 3060 VLSB #3140, Berkeley, CA 94720
| | - Takayoshi Ubuka
- Integrative Biology, University of California–Berkeley, 3060 VLSB #3140, Berkeley, CA 94720
| | - George E. Bentley
- Helen Wills Neuroscience Institute, University of California– Berkeley, 3060 VLSB #3140, Berkeley, CA 94720; and
- Integrative Biology, University of California–Berkeley, 3060 VLSB #3140, Berkeley, CA 94720
| | - Daniela Kaufer
- Helen Wills Neuroscience Institute, University of California– Berkeley, 3060 VLSB #3140, Berkeley, CA 94720; and
- Integrative Biology, University of California–Berkeley, 3060 VLSB #3140, Berkeley, CA 94720
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Gimsa U, Kanitz E, Otten W, Ibrahim SM. Behavior and stress reactivity in mouse strains with mitochondrial DNA variations. Ann N Y Acad Sci 2009; 1153:131-8. [PMID: 19236336 DOI: 10.1111/j.1749-6632.2008.03960.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
We studied the behavior and neuroendocrine regulation under social disruption stress of C57BL/6J mice in which mitochondria were substituted by mitochondria from AKR/J or FVB/N strains. C57BL/6J-mt(FVB/N) mice were significantly more anxious in the elevated plus-maze test than C57BL/6J-mt(AKR/J) and C57BL/6J mice at base line. In addition, they showed a reduced corticosterone response and an activation of serotonergic and dopaminergic neurotransmitter systems after repeated challenge, i.e., social defeat and elevated plus-maze test. Our findings suggest that mitochondrial variations could affect anxiety-like behavior as well as corticosterone and neurotransmitter response to psychological stress.
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Affiliation(s)
- Ulrike Gimsa
- Research Unit Behavioural Physiology, Research Institute for the Biology of Farm Animals, Dummerstorf, Germany.
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