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Piera-Jordan CÁ, Prieto Huecas L, Serrano De La Cruz Delgado V, Zaragoza Martí A, García Velert MB, Tordera Terrades C, Sánchez-SanSegundo M, Hurtado-Sánchez JA, Tuells J, Martín Manchado L. Influence of the Mediterranean diet on seminal quality-a systematic review. Front Nutr 2024; 11:1287864. [PMID: 38425483 PMCID: PMC10902424 DOI: 10.3389/fnut.2024.1287864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 01/22/2024] [Indexed: 03/02/2024] Open
Abstract
Currently, there is a growing interest in the study of fertility because fertility-related problems affect up to 15% of the world's population. The aim of this study was to determine the influence of the Mediterranean diet on seminal quality in men of reproductive age. For this purpose, a systematic review of the literature was carried out following the PRISMA method. Electronic searches were carried out in the international databases PubMed, Scopus, the Cochrane Library, and Web of Science. In total, 10 articles with 2032 men were included. As inclusion criteria, articles published between 2012 and 2022 were selected, including those that included men aged between 18 and 55 years. Nutritional status was assessed through weight, height, and BMI. Dietary habits were evaluated through different indexes and food frequency questionnaires, and finally, semen quality was evaluated by measuring sperm concentration and motility (progressive and non-progressive). In six (60%) of the included articles, a positive relationship between adherence to the Mediterranean diet and semen quality was demonstrated; in two (20%) of the articles, no association was found; and finally, in two (20%) of the included articles, the relationship between dietary patterns typical of DM and semen quality was evaluated. Dietary habits influence semen quality. Adherence to the Mediterranean diet can improve male reproductive health, as it is a diet with antioxidant and anti-inflammatory effects. This is the first systematic review about the influence of the Mediterranean diet on semen quality, and the results are positive. These findings may allow us to provide better advice to our patients and to establish interventions with the aim of improving the results of assisted reproduction techniques.
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Petre GC, Francini-Pesenti F, Di Nisio A, De Toni L, Grande G, Mingardi A, Cusmano A, Spinella P, Ferlin A, Garolla A. Observational Cross-Sectional Study on Mediterranean Diet and Sperm Parameters. Nutrients 2023; 15:4989. [PMID: 38068847 PMCID: PMC10707842 DOI: 10.3390/nu15234989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
Infertility, affecting 15 to 25% of couples in the most developed countries, is recognized by the World Health Organization as a public health issue at a global level. Different causes are acknowledged to reduce fertility in both sexes. In particular, about 40-50% of cases recognize a male factor. Dietary habits and lifestyle are acknowledged to influence sperm quality and are therefore important modifiable factors in male reproductive health. Conditions such as overweight/obesity, impaired glucose metabolism and determinants of metabolic syndrome, together with unhealthy lifestyle behavior, i.e., smoking cigarettes and physical inactivity, are suggested to have a negative impact on male fertility. While individual elements and characteristics of the Western diet and habits are considered risk factors for male infertility, the Mediterranean diet (MD) seems to promote reproductive potential for improving sperm quality. It is also interesting to note that previous observational studies reported a positive correlation between the consumption of the single food classes of the MD pattern (i.e., vegetables and fruits, poultry, fish and seafood, whole grains, low-fat dairy products) and the quality of several sperm parameters. To evaluate the relationship between sperm parameters and MD adherence, we performed a cross-sectional study on the seminal data of 300 males (mean age 34.6 ± 9.1 years) who spontaneously referred to our center of reproductive medicine. The evaluation of adherence to MD was performed with a validated 14-point Mediterranean Diet Adherence Screener (MEDAS) questionnaire. Our findings showed that sperm parameters such as sperm count, motility, viability and normal morphology are significantly and positively correlated with MEDAS, independently of BMI and age. In addition, the application of an ROC curve on MEDAS value vs. seminal alterations identified 6.25 as the score threshold value below which altered sperm parameters were more likely to occur [AUC = 0.096 (CI: 0.059-0.133; p < 0.00)]. Therefore, adhering to the MD with at least a MEDAS score of 6.26 increases the probability of normozoospermia. Moreover, subjects who had a MEDAS value lower than 6.25 had an Odds Ratio of 6.28 (CI = 3.967-9.945) for having at least one altered sperm parameter compared to those who were more adherent to the MD. In conclusion, our findings show that a higher adherence to the MD is associated with better semen parameters, in particular in relation to sperm count, sperm concentration, typical sperm morphology, and sperm progressive motility.
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Affiliation(s)
- Gabriel Cosmin Petre
- Unit of Andrology and Reproductive Medicine, Department of Medicine, University of Padova, 35128 Padova, Italy; (G.C.P.); (A.D.N.); (L.D.T.); (G.G.); (A.M.); (A.G.)
| | - Francesco Francini-Pesenti
- Clinical Nutrition Unit, Department of Medicine, University of Padova, 35128 Padova, Italy; (F.F.-P.); (A.C.); (P.S.)
| | - Andrea Di Nisio
- Unit of Andrology and Reproductive Medicine, Department of Medicine, University of Padova, 35128 Padova, Italy; (G.C.P.); (A.D.N.); (L.D.T.); (G.G.); (A.M.); (A.G.)
| | - Luca De Toni
- Unit of Andrology and Reproductive Medicine, Department of Medicine, University of Padova, 35128 Padova, Italy; (G.C.P.); (A.D.N.); (L.D.T.); (G.G.); (A.M.); (A.G.)
| | - Giuseppe Grande
- Unit of Andrology and Reproductive Medicine, Department of Medicine, University of Padova, 35128 Padova, Italy; (G.C.P.); (A.D.N.); (L.D.T.); (G.G.); (A.M.); (A.G.)
| | - Asia Mingardi
- Unit of Andrology and Reproductive Medicine, Department of Medicine, University of Padova, 35128 Padova, Italy; (G.C.P.); (A.D.N.); (L.D.T.); (G.G.); (A.M.); (A.G.)
| | - Arianna Cusmano
- Clinical Nutrition Unit, Department of Medicine, University of Padova, 35128 Padova, Italy; (F.F.-P.); (A.C.); (P.S.)
| | - Paolo Spinella
- Clinical Nutrition Unit, Department of Medicine, University of Padova, 35128 Padova, Italy; (F.F.-P.); (A.C.); (P.S.)
| | - Alberto Ferlin
- Unit of Andrology and Reproductive Medicine, Department of Medicine, University of Padova, 35128 Padova, Italy; (G.C.P.); (A.D.N.); (L.D.T.); (G.G.); (A.M.); (A.G.)
| | - Andrea Garolla
- Unit of Andrology and Reproductive Medicine, Department of Medicine, University of Padova, 35128 Padova, Italy; (G.C.P.); (A.D.N.); (L.D.T.); (G.G.); (A.M.); (A.G.)
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Methorst C, Faix A, Huyghe E. [Medical treatments for male infertility]. Prog Urol 2023; 33:653-680. [PMID: 38012910 DOI: 10.1016/j.purol.2023.09.019] [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: 08/22/2023] [Revised: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND Treatments to stimulate spermatogenesis and antioxidant food supplements are often offered to infertile patients either before sperm extraction surgery to improve results, or as part of medically assisted reproduction or spontaneous fertility to increase the likelihood of a live birth. METHODS A bibliographic search limited to English-language literature on men published before 5/2023 was carried out, including clinical trials, literature reviews and meta-analyses on spermatogenesis-stimulating molecules and antioxidant treatments. RESULTS Several medical treatments seem capable of improving male fertility: they act mainly by stimulating spermatogenesis through hormones, or by reducing the effects of oxidative stress. With regard to oligoasthenozoospermia, the literature shows that certain hormonal treatments stimulating spermatogenesis are useful. In the case of non-obstructive azoospermia, the value of treatment depends on the patient's FSH and testosterone levels. AOX supplementation appears to improve certain spermogram parameters and have an impact on pregnancy and live birth rates. CONCLUSION This review should help urologists gain a better understanding of the various medical treatments and enable them to define an appropriate therapeutic strategy, tailored to the patient and the couple, in order to obtain the best results.
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Affiliation(s)
- C Methorst
- Service de médecine de la reproduction, hôpital des 4-villes, Saint-Cloud, France
| | - A Faix
- Clinique Saint-Roch, 560 avenue du Colonel-Pavelet-dit-Villars 34000 Montpellier, France
| | - E Huyghe
- Département d'urologie, hôpital de Rangueil, CHU de Toulouse, Toulouse, France; Service de médecine de la reproduction, hôpital Paule-de-Viguier, CHU de Toulouse, Toulouse, France; UMR DEFE, Inserm 1203, université de Toulouse, université de Montpellier, Montpellier, France.
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Cipriani S, Ricci E, Chiaffarino F, Esposito G, Dalmartello M, La Vecchia C, Negri E, Parazzini F. Trend of change of sperm count and concentration over the last two decades: A systematic review and meta-regression analysis. Andrology 2023; 11:997-1008. [PMID: 36709405 DOI: 10.1111/andr.13396] [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: 04/05/2022] [Revised: 01/11/2023] [Accepted: 01/18/2023] [Indexed: 01/30/2023]
Abstract
BACKGROUND Since the 1970s, several studies found that sperm concentration (SC) and total sperm count (TSC) constantly worsened over time, mainly in high-income countries. OBJECTIVES To evaluate whether the decreasing trend in sperm count is continuing in Western European countries and USA, we performed a systematic review and meta-regression analysis. MATERIALS AND METHODS Embase and Pubmed/Medline were searched papers published in English in the 2000-2020 period limiting the search to data collected in the USA and Western European countries. RESULTS We identified 62 articles and pooled information on 24,196 men (range 10-2,523), collected from 1993 to 2018. Considering all the studies, random-effects meta-regression analyses showed no significant trend for SC (slope per year -0.07 mil/mL, p-value = 0.86). Negative trends of SC were detected in Scandinavian countries (slope per year -1.11 mil/mL, 95% CI: -2.40 to +0.19; p-value = 0.09), but the findings were statistically not significant. No significant trends of SC were detected in Central Europe (slope per year +0.23, 95% CI -2.51 to +2.96; p-value = 0.87), the USA (slope per year +1.08, 95% CI -0.42 to +2.57; p-value = 0.16), and Southern Europe (slope per year +0.19, 95% CI -0.99 to +1.37; p-value = 0.75). We have analyzed separately findings from studies including sperm donors, fertile men, young unselected men (unselected men, study mean age < 25 years) and unselected men (unselected men, study mean age ≥ 25 years). No significant trends of SC were observed among sperm donors (slope per year -2.80, 95% CI -6.76 to +1.17; p-value 0.16), unselected men (slope per year -0.23, 95% CI -1.58 to +1.12; p-value 0.73), young unselected men (slope per year -0.49, 95% CI -1.76 to +0.79; p-value 0.45), fertile men (slope per year +0.29, 95% CI -1.09 to +1.67; p-value 0.68). DISCUSSION AND CONCLUSION The results of this analysis show no significant trends in SC, in USA, and selected Western European countries.
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Affiliation(s)
- Sonia Cipriani
- Gynaecology Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Elena Ricci
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Francesca Chiaffarino
- Gynaecology Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Giovanna Esposito
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Michela Dalmartello
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Carlo La Vecchia
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Eva Negri
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
- Department of Medical and Surgical Science, University of Bologna, Bologna, Italy
| | - Fabio Parazzini
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
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Levine H, Jørgensen N, Martino-Andrade A, Mendiola J, Weksler-Derri D, Jolles M, Pinotti R, Swan SH. Temporal trends in sperm count: a systematic review and meta-regression analysis of samples collected globally in the 20th and 21st centuries. Hum Reprod Update 2023; 29:157-176. [PMID: 36377604 DOI: 10.1093/humupd/dmac035] [Citation(s) in RCA: 137] [Impact Index Per Article: 137.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/29/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Numerous studies have reported declines in semen quality and other markers of male reproductive health. Our previous meta-analysis reported a significant decrease in sperm concentration (SC) and total sperm count (TSC) among men from North America-Europe-Australia (NEA) based on studies published during 1981-2013. At that time, there were too few studies with data from South/Central America-Asia-Africa (SAA) to reliably estimate trends among men from these continents. OBJECTIVE AND RATIONALE The aim of this study was to examine trends in sperm count among men from all continents. The broader implications of a global decline in sperm count, the knowledge gaps left unfilled by our prior analysis and the controversies surrounding this issue warranted an up-to-date meta-analysis. SEARCH METHODS We searched PubMed/MEDLINE and EMBASE to identify studies of human SC and TSC published during 2014-2019. After review of 2936 abstracts and 868 full articles, 44 estimates of SC and TSC from 38 studies met the protocol criteria. Data were extracted on semen parameters (SC, TSC, semen volume), collection year and covariates. Combining these new data with data from our previous meta-analysis, the current meta-analysis includes results from 223 studies, yielding 288 estimates based on semen samples collected 1973-2018. Slopes of SC and TSC were estimated as functions of sample collection year using simple linear regression as well as weighted meta-regression. The latter models were adjusted for predetermined covariates and examined for modification by fertility status (unselected by fertility versus fertile), and by two groups of continents: NEA and SAA. These analyses were repeated for data collected post-2000. Multiple sensitivity analyses were conducted to examine assumptions, including linearity. OUTCOMES Overall, SC declined appreciably between 1973 and 2018 (slope in the simple linear model: -0.87 million/ml/year, 95% CI: -0.89 to -0.86; P < 0.001). In an adjusted meta-regression model, which included two interaction terms [time × fertility group (P = 0.012) and time × continents (P = 0.058)], declines were seen among unselected men from NEA (-1.27; -1.78 to -0.77; P < 0.001) and unselected men from SAA (-0.65; -1.29 to -0.01; P = 0.045) and fertile men from NEA (-0.50; -1.00 to -0.01; P = 0.046). Among unselected men from all continents, the mean SC declined by 51.6% between 1973 and 2018 (-1.17: -1.66 to -0.68; P < 0.001). The slope for SC among unselected men was steeper in a model restricted to post-2000 data (-1.73: -3.23 to -0.24; P = 0.024) and the percent decline per year doubled, increasing from 1.16% post-1972 to 2.64% post-2000. Results were similar for TSC, with a 62.3% overall decline among unselected men (-4.70 million/year; -6.56 to -2.83; P < 0.001) in the adjusted meta-regression model. All results changed only minimally in multiple sensitivity analyses. WIDER IMPLICATIONS This analysis is the first to report a decline in sperm count among unselected men from South/Central America-Asia-Africa, in contrast to our previous meta-analysis that was underpowered to examine those continents. Furthermore, data suggest that this world-wide decline is continuing in the 21st century at an accelerated pace. Research on the causes of this continuing decline and actions to prevent further disruption of male reproductive health are urgently needed.
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Affiliation(s)
- Hagai Levine
- Braun School of Public Health and Community Medicine, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Niels Jørgensen
- Department of Growth and Reproduction, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.,International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | | | - Jaime Mendiola
- Division of Preventive Medicine and Public Health, University of Murcia School of Medicine and Biomedical Research Institute of Murcia (IMIB-Arrixaca-UMU), Murcia, Spain
| | - Dan Weksler-Derri
- Clalit Health Services, Kiryat Ono, Israel.,Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Maya Jolles
- Braun School of Public Health and Community Medicine, Hadassah Medical Center, The Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Rachel Pinotti
- Gustave L. and Janet W. Levy Library, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Shanna H Swan
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Whittaker J. Dietary trends and the decline in male reproductive health. Hormones (Athens) 2023; 22:165-197. [PMID: 36725796 DOI: 10.1007/s42000-023-00431-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 01/16/2023] [Indexed: 02/03/2023]
Abstract
Over the twentieth century, male reproductive health has suffered a substantial decline, as evidenced by decreases in sperm counts and testosterone levels and increases in reproductive pathologies. At the same time, the prevalence of chronic diseases such as obesity, diabetes, and metabolic syndrome has risen dramatically. Metabolic and reproductive health are highly interconnected, suggesting that their respective trends are intertwined and, given the timeframe of such trends, environmental and not genetic factors are most likely to be the primary causes. Industrialization, which began in Europe in the mid-eighteenth century, has resulted in profound changes to our diet, lifestyle, and environment, many of which are causal factors in the rise in chronic diseases. Industrialization results in a nutrition transition from an agricultural unprocessed to a modern processed diet, incorporating increases in sugar, vegetable oils, ultra-processed foods, linoleic acid, trans-fats, and total energy. This dietary shift has incurred numerous adverse effects on metabolic and reproductive health, characterized by chronic inflammation, oxidative stress, and insulin resistance. Moreover, these effects appear to multiply across subsequent generations via epigenetic inheritance. Men's fertility is markedly affected by obesity and diabetes, with an increase in total energy via processed food intake arguably being the key factor driving the diabesity pandemic. In contrast, wholefoods rich in micronutrients and phytonutrients support male fertility and a healthy body weight. Therefore, men wanting to maximize their fertility should consider making positive dietary changes, such as replacing processed foods with unprocessed foods that support metabolic and reproductive health.
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Affiliation(s)
- Joseph Whittaker
- The School of Allied Health and Community, University of Worcester, Henwick Grove, Worcester, WR2 6AJ, UK.
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Talebi S, Arab A, Sorraya N. The Association Between Dietary Antioxidants and Semen Parameters: A Cross-Sectional Study Among Iranian Infertile Men. Biol Trace Elem Res 2022; 200:3957-3964. [PMID: 34741245 DOI: 10.1007/s12011-021-03007-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/31/2021] [Indexed: 10/19/2022]
Abstract
We aimed to explore the relationship between intakes of food-derived antioxidants (zinc, vitamin E, β-carotene, and selenium) and semen parameters in an infertile male population. This is a cross-sectional study among infertile men (> 18 years) referred to Isfahan Fertility and Infertility Center in Iran from March 2019 to October 2019. The main outcome measures were semen volume, sperm count, concentration, total motility, and morphology. Micronutrients considered in this analysis were zinc, selenium, β-carotene, and vitamin E. A total of 350 infertile men with a mean (SE) age of 34.77 (0.42) were included in this study. Selenium intake tended to be positively associated with higher semen volume (β = 0.79; 95% CI: - 0.01, 1.59) and sperm total motility after adjustment for main confounders (β = 2.64; 95% CI: - 3.61, 8.89). Intake of β-carotene was only associated with higher sperm total motility (β = 5.46; 95% CI: - 0.84, 11.77). No significant association was detected between intakes of zinc and vitamin E and semen parameters.In a population of infertile adult men, selenium intake was associated with higher sperm total motility and semen volume, and in the case of β-carotene, better sperm total motility. Further, prospective studies are warranted.
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Affiliation(s)
- Shokoofeh Talebi
- Department of Clinical Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Arman Arab
- Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nasim Sorraya
- Department of Community Nutrition, School of Nutrition and Food Science, Food Security Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
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Li W, Shang Q, Yang D, Peng J, Zhao H, Xu H, Chen Q. Abnormal Micronutrient Intake Is Associated with the Risk of Periodontitis: A Dose-response Association Study Based on NHANES 2009-2014. Nutrients 2022; 14:nu14122466. [PMID: 35745196 PMCID: PMC9230945 DOI: 10.3390/nu14122466] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/08/2022] [Accepted: 06/13/2022] [Indexed: 02/05/2023] Open
Abstract
The association between micronutrient intake and the risk of periodontitis has received much attention in recent years. However, most studies focused on the linear relationship between them. This study aimed to explore the dose–response association between micronutrient intake and periodontitis. A total of 8959 participants who underwent a periodontal examination, and reported their micronutrient intake levels were derived from the US National Health and Nutrition Examination Survey (NHANES, 2009–2014) database. Logistic regression was performed to evaluate associations between micronutrient intake and periodontitis after propensity score matching (PSM), and restricted cubic splines (RCS) analysis was conducted to explore the dose–response associations. Following PSM, 5530 participants were included in the RCS analysis. The risk of periodontitis was reduced with sufficient intake of the following micronutrients: vitamin A, vitamin B1, vitamin B2, and vitamin E. In addition, the risk of periodontitis was increased with excessive intake of the following micronutrients: vitamin B1 (1.8 mg/day, males; 1.3 mg/day, females), vitamin C (90 mg/day, males), and copper (1.1 mg/day, combined). In conclusion, a linear association was found between vitamin A, vitamin B2, vitamin C, and copper and periodontitis—namely, a sufficient intake of vitamin A and vitamin B2 might help reduce the prevalence of periodontitis; by contrast, a high intake of vitamin C and copper increased the risk. In addition, a nonlinear dose–response association was found for the incidence of periodontitis with vitamin B1 and vitamin E. When within reasonable limits, supplemental intake helped reduce the prevalence of periodontitis, while excessive intake did not help significantly and might even increase the risk. However, confounding factors, such as health awareness, should still be considered.
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Affiliation(s)
- Weiqi Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (W.L.); (Q.S.); (D.Y.); (J.P.); (Q.C.)
| | - Qianhui Shang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (W.L.); (Q.S.); (D.Y.); (J.P.); (Q.C.)
| | - Dan Yang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (W.L.); (Q.S.); (D.Y.); (J.P.); (Q.C.)
| | - Jiakuan Peng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (W.L.); (Q.S.); (D.Y.); (J.P.); (Q.C.)
| | - Hang Zhao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (W.L.); (Q.S.); (D.Y.); (J.P.); (Q.C.)
- Correspondence: (H.Z.); (H.X.); Tel.: +86-28-85501484 (H.Z. & X.H.)
| | - Hao Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (W.L.); (Q.S.); (D.Y.); (J.P.); (Q.C.)
- Correspondence: (H.Z.); (H.X.); Tel.: +86-28-85501484 (H.Z. & X.H.)
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China; (W.L.); (Q.S.); (D.Y.); (J.P.); (Q.C.)
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Lutein Can Alleviate Oxidative Stress, Inflammation, and Apoptosis Induced by Excessive Alcohol to Ameliorate Reproductive Damage in Male Rats. Nutrients 2022; 14:nu14122385. [PMID: 35745115 PMCID: PMC9228221 DOI: 10.3390/nu14122385] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/02/2022] [Accepted: 06/05/2022] [Indexed: 12/18/2022] Open
Abstract
Chronic excessive alcohol intake may lead to male reproductive damage. Lutein is a carotenoid compound with antioxidant activity. The purpose of this study was to observe the effect of lutein supplementation on male reproductive damage caused by excessive alcohol intake. In this study, an animal model of excessive drinking (12 mL/(kg.bw.d)) for 12 weeks was established and supplemented with different doses of lutein (12, 24, 48 mg/(kg.bw.d)). The results showed that the body weight, sperm quality, sex hormones (FSH, testosterone), and antioxidant markers (GSH-Px) decreased significantly, while MDA and inflammatory factors (IL-6, TNF-α) increased significantly in the alcohol model group when compared to the normal control group. After 12 weeks of high-dose lutein supplementation with 48mg/(kg.bw.d), the spermatogenic ability, testosterone level, and the activity of marker enzymes reflecting testicular injury were improved. In addition, high-dose lutein supplementation downregulated the NF-κB and the pro-apoptosis biomarkers (Bax, Cytc and caspase-3), whereas it upregulated the expression of Nrf2/HO-1 and the anti-apoptotic molecule Bcl-2. These findings were fully supported by analyzing the testicular histopathology and by measuring germ cell apoptosis. In conclusion, lutein protects against reproductive injury induced by excessive alcohol through its antioxidant, anti-inflammatory, and anti-apoptotic properties.
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Zhou X, Shi H, Zhu S, Wang H, Sun S. Effects of vitamin E and vitamin C on male infertility: a meta-analysis. Int Urol Nephrol 2022; 54:1793-1805. [DOI: 10.1007/s11255-022-03237-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 05/05/2022] [Indexed: 11/28/2022]
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de Ligny W, Smits RM, Mackenzie-Proctor R, Jordan V, Fleischer K, de Bruin JP, Showell MG. Antioxidants for male subfertility. Cochrane Database Syst Rev 2022; 5:CD007411. [PMID: 35506389 PMCID: PMC9066298 DOI: 10.1002/14651858.cd007411.pub5] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND The inability to have children affects 10% to 15% of couples worldwide. A male factor is estimated to account for up to half of the infertility cases with between 25% to 87% of male subfertility considered to be due to the effect of oxidative stress. Oral supplementation with antioxidants is thought to improve sperm quality by reducing oxidative damage. Antioxidants are widely available and inexpensive when compared to other fertility treatments, however most antioxidants are uncontrolled by regulation and the evidence for their effectiveness is uncertain. We compared the benefits and risks of different antioxidants used for male subfertility. OBJECTIVES To evaluate the effectiveness and safety of supplementary oral antioxidants in subfertile men. SEARCH METHODS The Cochrane Gynaecology and Fertility (CGF) Group trials register, CENTRAL, MEDLINE, Embase, PsycINFO, AMED, and two trial registers were searched on 15 February 2021, together with reference checking and contact with experts in the field to identify additional trials. SELECTION CRITERIA We included randomised controlled trials (RCTs) that compared any type, dose or combination of oral antioxidant supplement with placebo, no treatment, or treatment with another antioxidant, among subfertile men of a couple attending a reproductive clinic. We excluded studies comparing antioxidants with fertility drugs alone and studies that included men with idiopathic infertility and normal semen parameters or fertile men attending a fertility clinic because of female partner infertility. DATA COLLECTION AND ANALYSIS We used standard methodological procedures recommended by Cochrane. The primary review outcome was live birth. Clinical pregnancy, adverse events and sperm parameters were secondary outcomes. MAIN RESULTS We included 90 studies with a total population of 10,303 subfertile men, aged between 18 and 65 years, part of a couple who had been referred to a fertility clinic and some of whom were undergoing medically assisted reproduction (MAR). Investigators compared and combined 20 different oral antioxidants. The evidence was of 'low' to 'very low' certainty: the main limitation was that out of the 67 included studies in the meta-analysis only 20 studies reported clinical pregnancy, and of those 12 reported on live birth. The evidence is current up to February 2021. Live birth: antioxidants may lead to increased live birth rates (odds ratio (OR) 1.43, 95% confidence interval (CI) 1.07 to 1.91, P = 0.02, 12 RCTs, 1283 men, I2 = 44%, very low-certainty evidence). Results in the studies contributing to the analysis of live birth rate suggest that if the baseline chance of live birth following placebo or no treatment is assumed to be 16%, the chance following the use of antioxidants is estimated to be between 17% and 27%. However, this result was based on only 246 live births from 1283 couples in 12 small or medium-sized studies. When studies at high risk of bias were removed from the analysis, there was no evidence of increased live birth (Peto OR 1.22, 95% CI 0.85 to 1.75, 827 men, 8 RCTs, P = 0.27, I2 = 32%). Clinical pregnancy rate: antioxidants may lead to increased clinical pregnancy rates (OR 1.89, 95% CI 1.45 to 2.47, P < 0.00001, 20 RCTs, 1706 men, I2 = 3%, low-certainty evidence) compared with placebo or no treatment. This suggests that, in the studies contributing to the analysis of clinical pregnancy, if the baseline chance of clinical pregnancy following placebo or no treatment is assumed to be 15%, the chance following the use of antioxidants is estimated to be between 20% and 30%. This result was based on 327 clinical pregnancies from 1706 couples in 20 small studies. Adverse events Miscarriage: only six studies reported on this outcome and the event rate was very low. No evidence of a difference in miscarriage rate was found between the antioxidant and placebo or no treatment group (OR 1.46, 95% CI 0.75 to 2.83, P = 0.27, 6 RCTs, 664 men, I2 = 35%, very low-certainty evidence). The findings suggest that in a population of subfertile couples, with male factor infertility, with an expected miscarriage rate of 5%, the risk of miscarriage following the use of an antioxidant would be between 4% and 13%. Gastrointestinal: antioxidants may lead to an increase in mild gastrointestinal discomfort when compared with placebo or no treatment (OR 2.70, 95% CI 1.46 to 4.99, P = 0.002, 16 RCTs, 1355 men, I2 = 40%, low-certainty evidence). This suggests that if the chance of gastrointestinal discomfort following placebo or no treatment is assumed to be 2%, the chance following the use of antioxidants is estimated to be between 2% and 7%. However, this result was based on a low event rate of 46 out of 1355 men in 16 small or medium-sized studies, and the certainty of the evidence was rated low and heterogeneity was high. We were unable to draw conclusions from the antioxidant versus antioxidant comparison as insufficient studies compared the same interventions. AUTHORS' CONCLUSIONS In this review, there is very low-certainty evidence from 12 small or medium-sized randomised controlled trials suggesting that antioxidant supplementation in subfertile males may improve live birth rates for couples attending fertility clinics. Low-certainty evidence suggests that clinical pregnancy rates may increase. There is no evidence of increased risk of miscarriage, however antioxidants may give more mild gastrointestinal discomfort, based on very low-certainty evidence. Subfertile couples should be advised that overall, the current evidence is inconclusive based on serious risk of bias due to poor reporting of methods of randomisation, failure to report on the clinical outcomes live birth rate and clinical pregnancy, often unclear or even high attrition, and also imprecision due to often low event rates and small overall sample sizes. Further large well-designed randomised placebo-controlled trials studying infertile men and reporting on pregnancy and live births are still required to clarify the exact role of antioxidants.
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Affiliation(s)
- Wiep de Ligny
- Department of Gynaecology and Obstetrics, Radboud University Medical Center, Nijmegen, Netherlands
| | - Roos M Smits
- Department of Gynaecology and Obstetrics, Radboud University Medical Center, Nijmegen, Netherlands
| | | | - Vanessa Jordan
- Department of Obstetrics and Gynaecology, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
| | - Kathrin Fleischer
- Department of Gynaecology and Obstetrics, Radboud University Medical Center, Nijmegen, Netherlands
| | - Jan Peter de Bruin
- Department of Obstetrics and Gynaecology, Jeroen Bosch Hospital, 's-Hertogenbosch, Netherlands
| | - Marian G Showell
- Department of Obstetrics and Gynaecology, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, New Zealand
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12
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Greifová H, Jambor T, Tokárová K, Knížatová N, Lukáč N. In Vitro Effect of Resveratrol Supplementation on Oxidative Balance and Intercellular Communication of Leydig Cells Subjected to Induced Oxidative Stress. Folia Biol (Praha) 2022. [DOI: 10.3409/fb_70-1.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Many studies have revealed that oxidative stress is a primary factor in the pathogenesis of male reproductive system dysfunctions. The strong antioxidant and cytoprotective effects of resveratrol have previously been demonstrated, but its effect in the context of the male reproduction
remains unconvincing. To observe the biological activity of resveratrol in protecting the male reproductive function, hydrogen peroxide-induced oxidative stress in Leydig cells was used as a cell model. The aim of the present study was to examine if resveratrol could induce changes in the
gap junction intercellular communication (GJIC), nitric oxide production, total oxidant status (TOS) and total antioxidant capacity (TAC) in TM3 Leydig cells subjected to H2O2. The Leydig cells were exposed to a resveratrol treatment (5, 10, 20, 50 and 100 μM) in the
presence or absence of H2O2 (300/600 μM) during a 24 h in vitro culture. The cell lysates to assess TOS and TAC, NO production were quantified in a culture medium using the Griess method, and the Scrape Loading/Dye Transfer (SL/DT) technique was used for the
determination of GJIC in the exposed TM3 Leydig cells. Treatment with higher doses of resveratrol alone led to a significantly increased TOS (p<0.05 with 100 μM) and NO production (p<0.05 with 50 μM and 100 μM), but significantly reduced TAC (p<0.01 with 100 μM) and GJIC
(p<0.05 with 100 μM), while the SL/DT evaluation in the cells exposed to resveratrol at concentrations 5 μM (p<0.05) and 10 μM (p<0.01) revealed a significant stimulation of GJIC. The most potent cytoprotective or stimulatory effect of resveratrol in the cells co-exposed
to oxidative stress (300 μM H2O2) was observed at a concentration of 10 μM in the case of GJIC, which was manifested by a significant increase in the values (p<0.05) compared to the control group treated with H2O2 alone.
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Affiliation(s)
- Hana Greifová
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Tomáš Jambor
- BioFood Centre, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Katarína Tokárová
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Nikola Knížatová
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
| | - Norbert Lukáč
- Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia
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13
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Cui Q, Wang HH, Wu QJ, Wang XB, Guo RH, Leng X, Tan XL, Du Q, Pan BC. Diet Quality Scores and Asthenoteratozoospermia Risk: Finding From a Hospital-Based Case–Control Study in China. Front Nutr 2022; 9:859143. [PMID: 35479758 PMCID: PMC9036176 DOI: 10.3389/fnut.2022.859143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
Objective We aimed to examine associations of diet quality scores, including the dietary approaches to stop hypertension (DASH), alternate Healthy Eating Index (AHEI), and Chinese Healthy Eating Index (CHEI) with asthenoteratozoospermia risk in China. Methods Among 254 cases and 633 controls in a hospital-based case–control study in Shenyang, Liaoning Province, China, DASH, AHEI, and CHEI were calculated using a validated food frequency questionnaire. Asthenotetrazoospermia was evaluated according to World Health Organization guidelines. Unconditional multiple logistic regression was used to estimate odds ratios (ORs) with 95% confidence intervals (CIs) for the association between quality diet scores and asthenoteratozoospermia risk. Results We found that the CHEI score was inversely associated with asthenoteratozoospermia risk, with ORs of 0.59 (95% CI 0.39, 0.88) and 0.59 (95% CI 0.39, 0.88) for the 2nd and 3rd tertiles vs. the 1st tertile, respectively (P trend < 0.05). In addition, our data indicated that each standard deviation increase in CHEI, AHEI-2010, and DASH score was associated with 19, 13, and 17% decreased risk of asthenoteratozoospermia, respectively. Conclusion Our findings suggest that higher adherence to the CHEI, AHEI-2010, and DASH diet quality scores may reduce the risk of asthenoteratozoospermia, especially for younger participants.
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Affiliation(s)
- Qi Cui
- Department of Frigidzone Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
- Key Laboratory of Extreme Environmental Medicine, Ministry of Education of China, Chongqing, China
- Key Laboratory of High Altitude Medicine, People's Liberation Army (PLA), Chongqing, China
| | - Hui-Han Wang
- Department of Hematology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qi-Jun Wu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China
- Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiao-Bin Wang
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ren-Hao Guo
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xu Leng
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xiao-Ling Tan
- Department of Frigidzone Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
- Key Laboratory of Extreme Environmental Medicine, Ministry of Education of China, Chongqing, China
- Key Laboratory of High Altitude Medicine, People's Liberation Army (PLA), Chongqing, China
| | - Qiang Du
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- *Correspondence: Qiang Du
| | - Bo-Chen Pan
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
- Bo-Chen Pan
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14
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Wang XB, Wu QJ, Guo RH, Leng X, Du Q, Zhao YH, Pan BC. Dairy Product Consumption and Oligo-Astheno-Teratozoospermia Risk: A Hospital-Based Case-Control Study in China. Front Nutr 2022; 8:742375. [PMID: 34993218 PMCID: PMC8724031 DOI: 10.3389/fnut.2021.742375] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 12/01/2021] [Indexed: 12/19/2022] Open
Abstract
Background: Researches on the association of dairy products consumption with Oligo-astheno-teratozoospermia (OAT) risk has been limited and controversial. Therefore, we aim to explore the aforementioned association among Chinese men. Methods: A hospital-based case-control study was conducted in men consisting of 106 cases of OAT and 581 controls. Intakes of dairy products and their related nutrients were collected using a semi-quantitative food frequency questionnaire and semen quality was analyzed according to the World Health Organization guidelines. The daily intake of dairy products and their related nutrients was categorized into three groups with the lowest tertile serving as the reference category. Odds ratios (ORs) and 95% confidence intervals (CIs) of association between dairy intake and OTA risk were calculated by the multivariable logistic regression models. Results: No significant association was found between total dairy (OR T3vs.T1 =1.53, 95% CI: 0.85–2.78), protein (OR T3vs.T1 =1.51, 95% CI: 0.84–2.75), or calcium (OR T3vs.T1 = 1.46, 95% CI: 0.81–2.66) and the OAT risk in the main findings. However, we observed a statistically significant positive association of dairy fat intake with OAT risk (OR T3vs.T1 =1.93, 95% CI: 1.06–3.58). The findings were consistent with the main results when we carried out subgroup analysis stratified by body mass index. Conclusion: A significant positive association was found between dairy fat intake and the risk of OAT. Further large-scale prospective studies are required to confirm this finding.
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Affiliation(s)
- Xiao-Bin Wang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qi-Jun Wu
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ren-Hao Guo
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xu Leng
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qiang Du
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yu-Hong Zhao
- Department of Clinical Epidemiology, Shengjing Hospital of China Medical University, Shenyang, China.,Clinical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Bo-Chen Pan
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, China
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15
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Mitsunami M, Salas-Huetos A, Mínguez-Alarcón L, Attaman JA, Ford JB, Kathrins M, Souter I, Chavarro JE. A dietary score representing the overall relation of men's diet with semen quality in relation to outcomes of infertility treatment with assisted reproduction. F S Rep 2021; 2:396-404. [PMID: 34934979 PMCID: PMC8655432 DOI: 10.1016/j.xfre.2021.08.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 11/26/2022] Open
Abstract
Objective To examine the impact of men's diet on outcomes of infertility treatment with assisted reproductive technology (ART) using an empirical score representing the relation of diet with semen quality. Design Prospective cohort study. Setting Fertility center at an academic medical center. Patients We included 296 men (688 semen samples) to identify an empirical dietary pattern and 231 couples (406 ART cycles) to investigate the association of this diet pattern with ART outcomes. Interventions Men's diet was assessed at baseline using a validated questionnaire. An empirical dietary pattern reflecting the overall relation of diet with semen quality was identified using reduced rank regression. Main Outcome Measures The primary outcome was live birth per treatment cycle. The secondary outcomes were fertilization, implantation, and clinical pregnancy. Results Men had a median baseline age and body mass index of 36.8 years and 26.9 kg/m2, respectively. Although the empirical diet pattern was significantly associated with all semen parameters, the empirical diet score was not related to any clinical outcome of infertility treatment after ART. The adjusted probabilities of relevant clinical outcomes in the lowest and highest quartiles of the empirical score were 0.62 (0.50-0.73) and 0.55 (0.45-0.66) for implantation, 0.57 (0.46-0.69) and 0.50 (0.40-0.61) for clinical pregnancy, and 0.49 (0.37-0.62) and 0.36 (0.25-0.48) for live birth. Analyses excluding couples with a diagnosis of male factor infertility and, separately, excluding intracytoplasmic sperm injection cycles yielded similar results. Conclusions A dietary score representing the overall association of diet with semen quality parameters was not associated with ART outcomes.
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Affiliation(s)
- Makiko Mitsunami
- Master of Medical Sciences in Clinical Investigation Program, Harvard Medical School.,Department of Nutrition, Harvard T.H. Chan School of Public Health
| | | | - Lidia Mínguez-Alarcón
- Department of Environmental Health, Harvard T.H. Chan School of Public Health.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School
| | - Jill A Attaman
- Fertility Center, Vincent Department of Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School
| | - Jennifer B Ford
- Department of Environmental Health, Harvard T.H. Chan School of Public Health
| | - Martin Kathrins
- Division of Urology, Department of Surgery, Brigham and Women's Hospital and Harvard Medical School
| | - Irene Souter
- Fertility Center, Vincent Department of Obstetrics and Gynecology, Massachusetts General Hospital and Harvard Medical School
| | - Jorge E Chavarro
- Department of Nutrition, Harvard T.H. Chan School of Public Health.,Department of Epidemiology, Harvard T.H. Chan School of Public Health.,Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School
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16
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Mohapatra S, Viswanathan GKK, Wettstein L, Arad E, Paul A, Kumar V, Jelinek R, Münch J, Segal D. Dual concentration-dependent effect of ascorbic acid on PAP(248-286) amyloid formation and SEVI-mediated HIV infection. RSC Chem Biol 2021; 2:1534-1545. [PMID: 34704058 PMCID: PMC8496042 DOI: 10.1039/d1cb00084e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 08/08/2021] [Indexed: 12/20/2022] Open
Abstract
Human semen contains various amyloidogenic peptides derived from Prostatic Acid Phosphatase (PAP) and Semenogelin proteins that are capable of enhancing HIV-1 infection when assembled into fibrils. The best characterized among them is a 39 amino acid peptide PAP(248–286), which forms amyloid fibrils termed SEVI (semen-derived enhancer of viral infection) that increase the infectivity of HIV-1 by orders of magnitude. Inhibiting amyloid formation by PAP(248–286) may mitigate the sexual transmission of HIV-1. Several vitamins have been shown to reduce the aggregation of amyloids such as Aβ, α-Synuclein, and Tau, which are associated with neurodegenerative diseases. Since ascorbic acid (AA, vitamin C) is the most abundant vitamin in semen with average concentrations of 0.4 mM, we here examined how AA affects PAP(248–286) aggregation in vitro. Using ThT binding assays, transmission electron microscopy, and circular dichroism spectroscopy, a dual and concentration-dependent behavior of AA in modulating PAP(248–286) fibril formation was observed. We found that low molar ratios of AA:PAP(248–286) promoted whereas high molar ratios inhibited PAP(248–286) fibril formation. Accordingly, PAP(248–286) aggregated in the presence of low amounts of AA enhanced HIV-1 infection, whereas excess amounts of AA during aggregation reduced the infectivity enhancing effect in cell culture. Collectively, this work provides a biophysical insight into the effect of AA, an important seminal component, on SEVI fibrillation which might impact amyloid formation kinetics, thereby modulating the biological activity of semen amyloids. Human semen contains various amyloidogenic peptides derived from Prostatic Acid Phosphatase (PAP) and Semenogelin proteins that are capable of enhancing HIV-1 infection when assembled into fibrils.![]()
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Affiliation(s)
- Satabdee Mohapatra
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University Tel Aviv 69978 Israel
| | - Guru Krishna Kumar Viswanathan
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University Tel Aviv 69978 Israel
| | - Lukas Wettstein
- Institute of Molecular Virology, Ulm University Medical Center Ulm 89081 Germany
| | - Elad Arad
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology, Ben Gurion University of the Negev Beer Sheva 8410501 Israel
| | - Ashim Paul
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University Tel Aviv 69978 Israel
| | - Vijay Kumar
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University Tel Aviv 69978 Israel
| | - Raz Jelinek
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology, Ben Gurion University of the Negev Beer Sheva 8410501 Israel
| | - Jan Münch
- Institute of Molecular Virology, Ulm University Medical Center Ulm 89081 Germany
| | - Daniel Segal
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University Tel Aviv 69978 Israel
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17
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López-Botella A, Velasco I, Acién M, Sáez-Espinosa P, Todolí-Torró JL, Sánchez-Romero R, Gómez-Torres MJ. Impact of Heavy Metals on Human Male Fertility-An Overview. Antioxidants (Basel) 2021; 10:antiox10091473. [PMID: 34573104 PMCID: PMC8468047 DOI: 10.3390/antiox10091473] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/11/2021] [Accepted: 09/13/2021] [Indexed: 11/16/2022] Open
Abstract
Heavy metals are endocrine disruptors which interfere with processes mediated by endogenous hormones of the organism, negatively affecting endocrine functions. Some studies have correlated heavy metal exposure with male infertility. However, the number of studies conducted on humans are limited. Therefore, the aim of this study is to summarize the current knowledge on how heavy metals influence human male fertility. Hence, three distinct databases were consulted—PubMed, Scopus and Web of Science—using single keywords and combinations of them. The total number of identified articles was 636. Nevertheless, by using the inclusion and exclusion criteria, 144 articles were finally included in this work. Results display that the development of adequate instruments for heavy metal assessment may play an important function in human male fertility diagnosis and treatment. Furthermore, clinical trials could be useful to confirm the role of heavy metals in human male fertility diagnosis. Overall, further research is required to fully understand the molecular and cellular basis of the influence of environmental and occupational exposure to heavy metals on human male infertility and reproductive outcomes.
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Affiliation(s)
- Andrea López-Botella
- Service of Obstetrics and Gynecology, Unit of Human Reproduction, FISABIO—San Juan University Hospital, Carretera Alicante-Valencia s/n, 03550 San Juan de Alicante, Spain; (A.L.-B.); (I.V.); (M.A.)
- Biotechnology Department, Faculty of Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain;
| | - Irene Velasco
- Service of Obstetrics and Gynecology, Unit of Human Reproduction, FISABIO—San Juan University Hospital, Carretera Alicante-Valencia s/n, 03550 San Juan de Alicante, Spain; (A.L.-B.); (I.V.); (M.A.)
- Biotechnology Department, Faculty of Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain;
| | - Maribel Acién
- Service of Obstetrics and Gynecology, Unit of Human Reproduction, FISABIO—San Juan University Hospital, Carretera Alicante-Valencia s/n, 03550 San Juan de Alicante, Spain; (A.L.-B.); (I.V.); (M.A.)
- Gynecology Division, Faculty of Medicine, Miguel Hernández University, Carretera Alicante-Valencia s/n, 03550 San Juan de Alicante, Spain
| | - Paula Sáez-Espinosa
- Biotechnology Department, Faculty of Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain;
| | - José-Luis Todolí-Torró
- Department of Analytical Chemistry, Nutrition and Food Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain; (J.-L.T.-T.); (R.S.-R.)
| | - Raquel Sánchez-Romero
- Department of Analytical Chemistry, Nutrition and Food Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain; (J.-L.T.-T.); (R.S.-R.)
| | - María José Gómez-Torres
- Biotechnology Department, Faculty of Sciences, University of Alicante, Carretera San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Alicante, Spain;
- Correspondence:
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18
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Sadogh A, Gorji N, Moeini R. Herbal foodstuffs in Avicenna's recommended diet to improve sperm quality and increase male fertility; an evidence-based approach. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2021; 19:47-70. [PMID: 33544522 DOI: 10.1515/jcim-2020-0254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 01/02/2021] [Indexed: 11/15/2022]
Abstract
Attention to diet was considered important issues in improvement of men infertility in Persian Medicine (PM). The purpose of this study was to extract herbal foodstuffs introduced by Avicenna, one of the greatest PM physicians to improve the semen production and to provide evidence of their impact on the basis of current studies."Canon of Medicine", the most important Avecinna's book, was searched with keywords equivalent to semen, fertility and infertility, main herbal foodstuffs were extracted and was searched with keywords sperm, semen, infertility, and fertility in Google scholar, PubMed and Scopus databases. Manuscripts from 1950 up to December 2019 were selected and reviewed. Almond, Onion, Chickpea, Garlic, Coconut, Palm date, Sesame, Fenugreek, Carrot, Fig, Grapes, Pistachio, Hazelnut and Walnut are among main foodstuffs which recommended by Avicenna and there is also evidence that they have positive effects on testosterone production and improvement of various sperm parameters, including count, motility and morphology. Containing large amount of different macro and micronutrients such as vitamins including vit B, C, A and E, minerals such as Mg, Se, Zn, Cu and Fe, important unsaturated fatty acids such as linoleic and oleic acids, amino acids such as lysine and arginine and phytochemicals such as polyphenols, flavonoids, triterpenes and steroids can be considered as a main factor in the effectiveness of these foodstuffs. Designing a diet based on the fruits, vegetables, nuts and seeds that Avicenna has recommended, may be effective in treating male infertility but further studies are needed to clarify this issue. Research on the effectiveness of his other recommended foodsuffs may also offer new treatments and supplements for this purpose.
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Affiliation(s)
- Azita Sadogh
- Student Reseaerch Committee, Babol University of Medical Sciences, Babol, Iran
| | - Narjes Gorji
- Department of History of Medical Science, School of Persian medicine, Babol University of Medical Sciences, Tehran, Iran
| | - Reihaneh Moeini
- Department of Persian Medicine, School of Persian Medicine, Babol University of Medical Sciences, Babol, Islamic Republic of Iran.,Traditional Medicine and History of Medical Sciences Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Islamic Republic of Iran
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19
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Pini T, Raubenheimer D, Simpson SJ, Crean AJ. Obesity and Male Reproduction; Placing the Western Diet in Context. Front Endocrinol (Lausanne) 2021; 12:622292. [PMID: 33776921 PMCID: PMC7991841 DOI: 10.3389/fendo.2021.622292] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 02/01/2021] [Indexed: 12/15/2022] Open
Abstract
There is mounting evidence that obesity has negative repercussions for reproductive physiology in males. Much of this evidence has accumulated from rodent studies employing diets high in fat and sugar ("high fat" or "western" diets). While excessive fats and carbohydrates have long been considered major determinants of diet induced obesity, a growing body of research suggests that the relationships between diet composition and obesity are more complex than originally thought, involving interactions between dietary macronutrients. However, rodent dietary models have yet to evolve to capture this, instead relying heavily on elevated levels of a single macronutrient. While this approach has highlighted important effects of obesity on male reproduction, it does not allow for interpretation of the complex, interacting effects of dietary protein, carbohydrate and fat. Further, the single nutrient approach limits the ability to draw conclusions about which diets best support reproductive function. Nutritional Geometry offers an alternative approach, assessing outcomes of interest over an extended range of dietary macronutrient compositions. This review explores the practical application of Nutritional Geometry to study the effects of dietary macronutrient balance on male reproduction, including experimental considerations specific to studies of diet and reproductive physiology. Finally, this review discusses the promising use of Nutritional Geometry in the development of evidence-based pre-conception nutritional guidance for men.
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Cutillas-Tolín A, Adoamnei E, Navarrete-Muñoz EM, Vioque J, Moñino-García M, Jørgensen N, Chavarro JE, Mendiola J, Torres-Cantero AM. Adherence to diet quality indices in relation to semen quality and reproductive hormones in young men. Hum Reprod 2020; 34:1866-1875. [PMID: 31560742 DOI: 10.1093/humrep/dez157] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/01/2019] [Indexed: 01/01/2023] Open
Abstract
STUDY QUESTION Is adherence to an a priori defined diet quality indices [Alternate Healthy Index 2010 (AHEI-2010), relative Mediterranean diet score (rMED) or dietary approaches to stop hypertension (DASH)] associated with semen quality and reproductive hormone levels in young men? SUMMARY ANSWER Greater adherence to the DASH diet is related to higher sperm counts. WHAT IS KNOWN ALREADY Studies assessing the relationship between dietary intake and male reproductive function have mainly been focused on specific nutrients, food groups or data-driven dietary patterns, but the evidence on a priori defined dietary indices is still scarce. STUDY DESIGN, SIZE, DURATION Cross-sectional study of 209 male university students recruited from October 2010 to November 2011 in Murcia Region (Southern Spain). PARTICIPANTS/MATERIALS, SETTING, METHODS Healthy young men aged 18-23 years were included in this study. Diet was assessed using a validated food frequency questionnaire and three a priori-defined dietary indices (AHEI-2010, rMED and DASH) were calculated. Linear regression was used to analyze the relation between the three dietary indices and semen quality parameters and reproductive hormone levels accounting for potential confounders and covariates. MAIN RESULTS AND THE ROLE OF CHANCE We found statistically significant positive associations between the DASH index and sperm concentration (P, trend = 0.04), total sperm count (P, trend = 0.04) and total motile sperm count (P, trend = 0.02). No associations were observed for other semen parameters or male reproductive hormones. LIMITATIONS, REASONS FOR CAUTION Even though we adjusted for several known and suspected confounders we cannot exclude the possibility of residual or unmeasured confounding or chance findings. Subjects were blinded to the study outcomes thus reducing the potential influence on their report of diet. Our sample size may be too small to rule out associations with other semen parameters or reproductive hormones. Causal inference is limited, as usual with all observational studies. WIDER IMPLICATIONS OF THE FINDINGS The results suggest that greater adherence to the DASH may help improve sperm counts. This study was carried out on young men from the general population. However, results may differ among other populations (e.g. infertile men). Therefore, further research is needed to confirm these findings and extend these results to other populations. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by Fundación Séneca, grants No 08808/PI/08 and No 19443/PI/14; Ministerio de Ciencia e Innovación, Instituto de Salud Carlos III (AES), grants No PI10/00985 and No PI13/01237; and grant P30DK046200 from the National Institutes of Health. Authors have no competing interests to declare.
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Affiliation(s)
- Ana Cutillas-Tolín
- Division of Preventive Medici ne and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, Murcia, Spain
- Health Research Methodology Group, Biomedical Research Institute of Murcia (IMIB-Arrixaca), El Palmar, Murcia, Spain
| | - Evdochia Adoamnei
- Division of Preventive Medici ne and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, Murcia, Spain
- Health Research Methodology Group, Biomedical Research Institute of Murcia (IMIB-Arrixaca), El Palmar, Murcia, Spain
| | - Eva M Navarrete-Muñoz
- Nutritional Epidemiology Unit, University Miguel Hernández, San Juan de Alicante, Alicante, Spain
- CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Institute for Health and Biomedical Research (ISABIAL - FISABIO Foundation), Alicante, Spain
| | - Jesús Vioque
- Nutritional Epidemiology Unit, University Miguel Hernández, San Juan de Alicante, Alicante, Spain
- CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Institute for Health and Biomedical Research (ISABIAL - FISABIO Foundation), Alicante, Spain
| | - Miriam Moñino-García
- Division of Preventive Medici ne and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, Murcia, Spain
- Health Research Methodology Group, Biomedical Research Institute of Murcia (IMIB-Arrixaca), El Palmar, Murcia, Spain
| | - Niels Jørgensen
- Department of Growth and Reproduction, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Jorge E Chavarro
- Department of Nutrition and Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Jaime Mendiola
- Division of Preventive Medici ne and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, Murcia, Spain
- Health Research Methodology Group, Biomedical Research Institute of Murcia (IMIB-Arrixaca), El Palmar, Murcia, Spain
- CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Alberto M Torres-Cantero
- Division of Preventive Medici ne and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, Murcia, Spain
- Health Research Methodology Group, Biomedical Research Institute of Murcia (IMIB-Arrixaca), El Palmar, Murcia, Spain
- CIBER de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- Department of Preventive Medicine, "Virgen de la Arrixaca" University Clinical Hospital, El Palmar, Murcia, Spain
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21
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Kamiński P, Baszyński J, Jerzak I, Kavanagh BP, Nowacka-Chiari E, Polanin M, Szymański M, Woźniak A, Kozera W. External and Genetic Conditions Determining Male Infertility. Int J Mol Sci 2020; 21:ijms21155274. [PMID: 32722328 PMCID: PMC7432692 DOI: 10.3390/ijms21155274] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 12/13/2022] Open
Abstract
We explain environmental and genetic factors determining male genetic conditions and infertility and evaluate the significance of environmental stressors in shaping defensive responses, which is used in the diagnosis and treatment of male infertility. This is done through the impact of external and internal stressors and their instability on sperm parameters and their contribution to immunogenetic disorders and hazardous DNA mutations. As chemical compounds and physical factors play an important role in the induction of immunogenetic disorders and affect the activity of enzymatic and non-enzymatic responses, causing oxidative stress, and leading to apoptosis, they downgrade semen quality. These factors are closely connected with male reproductive potential since genetic polymorphisms and mutations in chromosomes 7, X, and Y critically impact on spermatogenesis. Microdeletions in the Azoospermic Factor AZF region directly cause defective sperm production. Among mutations in chromosome 7, impairments in the cystic fibrosis transmembrane conductance regulator CFTR gene are destructive for fertility in cystic fibrosis, when spermatic ducts undergo complete obstruction. This problem was not previously analyzed in such a form. Alongside karyotype abnormalities AZF microdeletions are the reason of spermatogenic failure. Amongst AZF genes, the deleted in azoospermia DAZ gene family is reported as most frequently deleted AZF. Screening of AZF microdeletions is useful in explaining idiopathic cases of male infertility as well as in genetic consulting prior to assisted reproduction. Based on the current state of research we answer the following questions: (1) How do environmental stressors lessen the quality of sperm and reduce male fertility; (2) which chemical elements induce oxidative stress and immunogenetic changes in the male reproductive system; (3) how do polymorphisms correlate with changes in reproductive potential and pro-antioxidative mechanisms as markers of pathophysiological disturbances of the male reproductive condition; (4) how do environmental stressors of immunogenetic disorders accompany male infertility and responses; and (5) what is the distribution and prevalence of environmental and genetic risk factors.
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Affiliation(s)
- Piotr Kamiński
- Department of Biotechnology, Institute of Biological Sciences, University of Zielona Góra, Prof. Szafran St. 1, PL 65-516 Zielona Góra, Poland
- Department of Ecology and Environmental Protection, Department of Medical Biology and Biochemistry, Collegium Medicum in Bydgoszcz, Faculty of Medicine, Nicolaus Copernicus University in Toruń, M. Skłodowska-Curie St. 9, PL 85-094 Bydgoszcz, Poland;
- Correspondence:
| | - Jędrzej Baszyński
- Department of Ecology and Environmental Protection, Department of Medical Biology and Biochemistry, Collegium Medicum in Bydgoszcz, Faculty of Medicine, Nicolaus Copernicus University in Toruń, M. Skłodowska-Curie St. 9, PL 85-094 Bydgoszcz, Poland;
| | - Izabela Jerzak
- Department of Pharmacology and Toxicology, Collegium Medicum, University of Zielona Góra, Zyta St. 28, PL 65-046 Zielona Góra, Poland;
| | - Brendan P. Kavanagh
- RCSI Biology, Royal College of Surgeons in Ireland, 123 St. Stephen’s Green, Dublin 2, Ireland;
| | - Ewa Nowacka-Chiari
- Department of Sport Promotion, Institute of Biological Sciences, University of Zielona Góra, Prof. Szafran St. 1, PL 65-516 Zielona Góra, Poland;
| | - Mateusz Polanin
- Karol Marcinkowski University Hospital in Zielona Góra, Zyta St. 26, PL 65-045 Zielona Góra, Poland;
| | - Marek Szymański
- Female Pathology and Oncological Gynecology, Department of Obstetrics, Faculty of Medicine, University Hospital No. 2, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Ujejski St. 75, PL 85-168 Bydgoszcz, Poland;
- NZOZ Medical Center Co. Prof. dr. hab. med. Wiesław Szymański, Dr. hab. med. Marek Szymański, Waleniowa St. 24, PL 85-435 Bydgoszcz, Poland
| | - Alina Woźniak
- Department of Medical Biology and Biochemistry, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Karłowicz St. 24, PL 85-092 Bydgoszcz, Poland;
| | - Wojciech Kozera
- Department of Agricultural Chemistry, Faculty of Agriculture and Biotechnology, UTP University of Science and Technology in Bydgoszcz, Seminaryjna St. 5, PL 85-326 Bydgoszcz, Poland;
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22
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Chen W, Tzeng S, Cheng E, Tsao H, Huang C, Chen S, Lee M, Lee T. Correlation of skin carotenoid levels with embryo development and pregnancy result of in vitro fertilization cycles for couples with unexplained infertility. Food Sci Nutr 2020; 8:3353-3361. [PMID: 32724600 PMCID: PMC7382124 DOI: 10.1002/fsn3.1615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 04/05/2020] [Accepted: 04/07/2020] [Indexed: 11/21/2022] Open
Abstract
Oxidative stress-related DNA damage is a significant pathology for male subfertility and unexplained infertility (UI). Antioxidant supplement by food or nutrition may benefit sperm function of UI couples. However, the role of antioxidant status on fertilization outcome and embryo development for UI couples is not clear. A total of 63 semen samples from UI couples undergoing in vitro fertilization (IVF) treatment (26 pregnant cycles and 37 nonpregnant cycles) were recruited for this prospective observational study. The reactive oxygen species (ROS) levels of sperm cells are detected by a chemiluminescence assay. Total antioxidant capacity (TAC) of seminal plasma is evaluated according to an antioxidant assay kit. The skin carotenoid status in the male partners of UI couples is measured by resonance Raman spectroscopy to determine the antioxidant potential from dietary supplement. The skin carotenoid status (23,115 ± 6,831 vs. 19,432 ± 5,242 Raman intensity, p = .0329 by Mann-Whitney U test) and day 3 good embryo rates (49.6 ± 27.1% vs. 26.8 ± 23.1%, p = .002 by Mann-Whitney U test) are higher in pregnant cycles compared to those in nonpregnant cycles. The local antioxidant capacity (seminal TAC) is closely correlated with fertilization rates (r = .35, p = .005). In contrast, skin carotenoid status is intimately associated with good embryo rates in IVF cycles (r = .34, p = .007). In conclusion, the skin carotenoid status of male partners of UI couples may benefit embryo development and the subsequent pregnancy outcome of IVF treatment. Further investigation about the effect and mechanism of nutritional supplement on embryo development in IVF cycles for UI couples is deserved.
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Affiliation(s)
- Wen‐Jung Chen
- Institute of MedicineChung Shan Medical UniversityTaichungTaiwan
- Department of UrologyChung Shan Medical University HospitalTaichungTaiwan
- School of MedicineChung Shan Medical UniversityTaichungTaiwan
| | - Shu‐Ling Tzeng
- Institute of MedicineChung Shan Medical UniversityTaichungTaiwan
| | - En‐Hui Cheng
- Division of Infertility ClinicLee Women's HospitalTaichungTaiwan
| | - Hui‐Mei Tsao
- Division of Infertility ClinicLee Women's HospitalTaichungTaiwan
| | - Chun‐Chia Huang
- Division of Infertility ClinicLee Women's HospitalTaichungTaiwan
| | - Sung‐Lang Chen
- Department of UrologyChung Shan Medical University HospitalTaichungTaiwan
- School of MedicineChung Shan Medical UniversityTaichungTaiwan
| | - Maw‐Sheng Lee
- Institute of MedicineChung Shan Medical UniversityTaichungTaiwan
- Division of Infertility ClinicLee Women's HospitalTaichungTaiwan
- Department of Obstetrics and GynecologyChung Shan Medical University HospitalTaichungTaiwan
| | - Tsung‐Hsien Lee
- Institute of MedicineChung Shan Medical UniversityTaichungTaiwan
- Division of Infertility ClinicLee Women's HospitalTaichungTaiwan
- Department of Obstetrics and GynecologyChung Shan Medical University HospitalTaichungTaiwan
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23
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Dias TR, Martin-Hidalgo D, Silva BM, Oliveira PF, Alves MG. Endogenous and Exogenous Antioxidants As a Tool to Ameliorate Male Infertility Induced by Reactive Oxygen Species. Antioxid Redox Signal 2020; 33:767-785. [PMID: 32368933 DOI: 10.1089/ars.2019.7977] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Significance: Antioxidants are essential for the maintenance of cellular redox homeodynamics in the male reproductive tract, playing a key role in fertilizing potential. Reactive oxygen species (ROS), at physiological levels, are essential for sperm function and fertilization. Under pathological conditions, abnormal production of ROS may occur. Redox control is primarily regulated by the inner antioxidant system. However, these endogenous antioxidants may be present at abnormal amounts or may be insufficient. Exogenous antioxidants obtained through the diet may have an important role, particularly in specific pathological conditions. This review addresses the regulation of redox homeodynamics in the male reproductive tract by endogenous and exogenous antioxidants and the importance of their cooperation for the maintenance of fertility. Recent Advances: Many studies have shown the importance of antioxidants for the preservation of male fertility, mostly under pathological conditions. Excessive antioxidants can inhibit ROS-induced signaling pathways that are essential for the reproductive system. The challenge is to keep the balance between oxidants and antioxidants to maintain ROS-amount at physiological concentration. Critical Issues: Although antioxidant therapies are gaining popularity and showing promising results in the improvement of male fertility, there is a lack of knowledge regarding the type of exogenous antioxidant, the doses and time to be administered. Future Directions: It would be of great importance to find a way to restore redox homeostasis under stress conditions. Understanding the poorly studied mechanisms by which exogenous antioxidants cooperate with the inner cellular antioxidant system to counteract free radicals may help in the development of new fertility therapies.
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Affiliation(s)
- Tânia R Dias
- Laboratory of Cell Biology, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar and Unit for Multidisciplinary Research in Biomedicine, University of Porto, Porto, Portugal
- Department of Medical Sciences, Universidade da Beira Interior, Covilhã, Portugal
- LAQV/REQUIMTE-Laboratory of Bromatology and Hydrology, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - David Martin-Hidalgo
- Laboratory of Cell Biology, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar and Unit for Multidisciplinary Research in Biomedicine, University of Porto, Porto, Portugal
- Research Group of Intracellular Signaling and Technology of Reproduction (SINTREP), Institute of Biotechnology in Agriculture and Livestock (INBIO G+C), University of Extremadura, Cáceres, Spain
| | - Branca M Silva
- Department of Medical Sciences, Universidade da Beira Interior, Covilhã, Portugal
| | - Pedro F Oliveira
- Department of Chemistry, QOPNA and LAQV, University of Aveiro, Aveiro, Portugal
| | - Marco G Alves
- Laboratory of Cell Biology, Department of Microscopy, Institute of Biomedical Sciences Abel Salazar and Unit for Multidisciplinary Research in Biomedicine, University of Porto, Porto, Portugal
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24
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Diet and Nutritional Factors in Male (In)fertility-Underestimated Factors. J Clin Med 2020; 9:jcm9051400. [PMID: 32397485 PMCID: PMC7291266 DOI: 10.3390/jcm9051400] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 05/05/2020] [Accepted: 05/07/2020] [Indexed: 12/12/2022] Open
Abstract
In up to 50% of cases, infertility issues stem solely from the male. According to some data, the quality of human semen has deteriorated by 50%–60% over the last 40 years. A high-fat diet and obesity, resulting from an unhealthy lifestyle, affects the structure of spermatozoa, but also the development of offspring and their health in later stages of life. In obese individuals, disorders on the hypothalamic-pituitary-gonadal axis are observed, as well as elevated oestrogen levels with a simultaneous decrease in testosterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH) levels. Healthy dietary models clearly correlate with better sperm quality and a smaller risk of abnormalities in parameters such as sperm count, sperm concentration and motility, and lower sperm DNA fragmentation. Apart from mineral components such as zinc and selenium, the role of omega-3 fatty acids and antioxidant vitamins should be emphasized, since their action will be primarily based on the minimization of oxidative stress and the inflammation process. Additionally, the incorporation of carnitine supplements and coenzyme Q10 in therapeutic interventions also seems promising. Therefore, it is advisable to have a varied and balanced diet based on vegetables and fruit, fish and seafood, nuts, seeds, whole-grain products, poultry, and low-fat dairy products.
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25
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Sadaghiani S, Fallahi S, Heshmati H, Teshnizi SH, Chaijan HA, Ebrahimi FFA, Khorrami F, Poorrezaeian M, Alizadeh F. Effect of antioxidant supplements on sperm parameters in infertile male smokers: a single-blinded clinical trial. AIMS Public Health 2020; 7:92-99. [PMID: 32258192 PMCID: PMC7109539 DOI: 10.3934/publichealth.2020009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 01/19/2020] [Indexed: 12/05/2022] Open
Abstract
Introduction Naturally, in human body, there is a balance between free radicals and the antioxidant system. Yet, cigarette consumption in smokers increases free radicals and decreases antioxidants. A vast body of research showed that the ROS level of seminal fluid is reduced using oral antioxidant complements through enhancing the clearing capacity of free radicals. Thus, the present research aimed to explore the effect of vitamin complement consumption on changing male infertility indices among smokers. Methods In the present randomized clinical trial which was single-blinded, 50 infertile oligospermic and asthenospermic men participated. They were selected in a randomized convenient sampling method. Before the study began, a semen sample was taken from all participants for analysis. Subsequently, the patients received 30 mg of Q10 coenzyme, 8 mg of zinc, 100 mg of vitamin C, 12 mg of vitamin E, 400 mg of folic acid for a whole duration of 3 months on a daily basis (once a day) and 200 mg of selenium every other day after lunch. A second sample of seminal fluid was taken from patients and semen parameters were compared between the pre- and post-test. The relevant statistical analyses were conducted in SPSS.23. Results A comparison of pre-test and post-test results revealed that all sperm parameters including the volume, morphology, motion, count and progressive motility were significantly increased after the intervention (p ≥ 005). Moreover, a statistically significant improvement was observed in the pH and concentration of seminal fluid. Conclusion The present research showed that consuming vitamin complements (30 mg of Q10, mg of zinc, 100 mg of vitamin C, 12 mg of vitamin E, 400 mg of folic acid) once a day as well as 200 mg of selenium every other day can effectively improve the qualitative parameters (pH and concentration) and quantitative parameters (volume, motion, morphology, count and progressive motility) in infertile male smokers.
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Affiliation(s)
- Safa Sadaghiani
- Department of Nursing, Faculty of Nursing and Midwifery, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Soghra Fallahi
- Fertility and Infertility Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Hossein Heshmati
- Fertility and Infertility Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Saeed Hosseini Teshnizi
- Social Determinants in Health Promotion Research Center, Hormozgan Health Institute, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | | | | | - Farhad Khorrami
- Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | | | - Faezeh Alizadeh
- Hormozgan University of Medical Sciences, Bandar Abbas, Iran
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Nassan FL, Jensen TK, Priskorn L, Halldorsson TI, Chavarro JE, Jørgensen N. Association of Dietary Patterns With Testicular Function in Young Danish Men. JAMA Netw Open 2020; 3:e1921610. [PMID: 32083688 PMCID: PMC7043196 DOI: 10.1001/jamanetworkopen.2019.21610] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
IMPORTANCE Diet may play a role in testicular function, but data on how adherence to different diet patterns influences human testicular function are scarce. OBJECTIVE To determine whether adherence to specific dietary patterns is associated with testicular function in young men. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study included 2935 young Danish men unselected regarding fertility status who were enrolled from April 1, 2008, through May 31, 2017. Data were analyzed from July 1, 2017, to January 30, 2019. EXPOSURES Dietary patterns identified with principal component analysis based on responses to a validated food frequency questionnaire. MAIN OUTCOMES AND MEASURES Standard semen quality assessment; serum concentrations of testosterone, free testosterone, estradiol, inhibin B, follicle-stimulating hormone, luteinizing hormone, and sex hormone-binding globulin; and testicular volume measured with ultrasonography. RESULTS Among the 2935 participants included in the analysis, median age was 19 (interquartile range, 19-20) years and 2290 (78.0%) had normal body mass index. The 4 dietary patterns identified included Western, prudent, open-sandwich (a traditional Danish eating pattern), and vegetarianlike. The greatest adherence to the prudent pattern was associated with the highest total sperm count (median, 167 [95% CI, 146-183] million), followed by adherence to vegetarianlike (median, 151 [95% CI, 134-168] million) and open-sandwich (median, 146 [95% CI, 131-163] million) patterns. Adherence to the Western pattern was associated with the lowest total sperm count (median, 122 [95% CI, 109-138] million), which was significantly lower than sperm count in the other 3 diet patterns. After adjusting for confounders, the median total sperm count for men in the highest quintile of adherence to the Western pattern was 26 million lower (95% CI, -42 to -9 million) than for men in the lowest quintile of adherence to this pattern. Conversely, the median total sperm count of men in the highest quintile of adherence to the prudent pattern was 43 million (95% CI, 23-63 million) higher than that of men in the lowest quintile. Men with the highest adherence to the Western pattern had a lower median ratio of inhibin B to follicle-stimulating hormone (-12 [95% CI, -20 to -3]) and higher median ratio of free testosterone to luteinizing hormone (10 [95% CI, 2-19]) compared with men with lowest adherence to this pattern. CONCLUSIONS AND RELEVANCE In this cross-sectional study, adherence to generally healthy diet patterns was associated with better semen quality, with potentially more favorable fertility potential among adult men.
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Affiliation(s)
- Feiby L. Nassan
- Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Tina K. Jensen
- Department of Environmental Medicine, Institute of Public Health, University of Southern Denmark, Odense, Denmark
- Odense Patient Data Explorative Network (OPEN), Odense, Denmark
| | - Lærke Priskorn
- Department of Growth and Reproduction, International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Thorhallur I. Halldorsson
- Centre for Foetal Programming, Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
- Faculty of Food Science and Nutrition, School of Health Sciences, University of Iceland, Reykjavík
| | - Jorge E. Chavarro
- Department of Nutrition, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Channing Division of Network Medicine, Harvard Medical School and Brigham and Women’s Hospital, Boston, Massachusetts
| | - Niels Jørgensen
- Department of Growth and Reproduction, International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
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27
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Danielewicz A, Morze J, Przybyłowicz M, Przybyłowicz KE. Association of the Dietary Approaches to Stop Hypertension, Physical Activity, and Their Combination with Semen Quality: A Cross-Sectional Study. Nutrients 2019; 12:nu12010039. [PMID: 31877862 PMCID: PMC7019803 DOI: 10.3390/nu12010039] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/17/2019] [Accepted: 12/19/2019] [Indexed: 12/16/2022] Open
Abstract
The influence of individual lifestyle factors is widely described in studies on semen quality. However, their synergistic effect is often neglected. The aim of the study was to examine the association between semen quality and dietary approaches to stop hypertension (DASH) diet, physical activity (PA), and the two separately and in combination. A cross-sectional study was carried out among 207 men aged 20–55. Dietary data were collected by a food frequency questionnaire (FFQ) and analysed according to the DASH scoring index. Physical activity was evaluated by the International Physical Activity Questionnaire. Semen parameters were assessed via the computer-aided semen analysis (CASA). Adherence to the DASH diet was associated with higher sperm count (ΔT3-T1 = 82.1 mln/ej) and concentration (ΔT3-T1 = 24.6 mln/mL). Higher PA was related to higher sperm count (ΔT3-T1 = 69.4 mln/ej), total (ΔT3-T1 = 11.9%), and progressive motility (ΔT3-T1 = 8.5%) and morphology (ΔT3-T1 = 2.8%) in the crude model and remained significant after adjustment. The combination of the DASH diet and PA, was significantly positively associated with sperm count (ΔT3-T1 = 98.1 mln/ej), sperm concentration (ΔT3-T1 = 17.5 mln/mL), total (ΔT3-T1 = 11.8%), and progressive motility (ΔT3-T1 = 10.0%) and morphology (ΔT3-T1 = 3.3%) in both models. Adherence to the DASH diet was related to higher sperm count and concentration, whereas after its combination with physical activity it was also positively correlated with sperm motility and morphology.
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Affiliation(s)
- Anna Danielewicz
- Department of Human Nutrition, Faculty of Food Sciences, University of Warmia and Mazury in Olsztyn, ul. Słoneczna 45F, 10-718 Olsztyn, Poland; (J.M.); (K.E.P.)
- Correspondence: ; Tel.: +48-89-524-55-12
| | - Jakub Morze
- Department of Human Nutrition, Faculty of Food Sciences, University of Warmia and Mazury in Olsztyn, ul. Słoneczna 45F, 10-718 Olsztyn, Poland; (J.M.); (K.E.P.)
- Department of Cardiology and Cardiac Surgery, School of Medicine, University of Warmia and Mazury in Olsztyn, al. Warszawska 30, 10-082 Olsztyn, Poland
| | - Mariusz Przybyłowicz
- Department of Oncological Gynecology, Provincial Specialist Hospital in Olsztyn, ul. Żołnierska 18, 10-561 Olsztyn, Poland;
- Center of Gynecology, Endocrinology and Reproductive Medicine Artemida in Olsztyn; ul. Jagiellońska 78, 10-229 Olsztyn, Poland
| | - Katarzyna Eufemia Przybyłowicz
- Department of Human Nutrition, Faculty of Food Sciences, University of Warmia and Mazury in Olsztyn, ul. Słoneczna 45F, 10-718 Olsztyn, Poland; (J.M.); (K.E.P.)
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Rudnicka A, Adoamnei E, Noguera-Velasco JA, Vioque J, Cañizares-Hernández F, Mendiola J, Jørgensen N, Chavarro JE, Swan SH, Torres-Cantero AM. Vitamin D status is not associated with reproductive parameters in young Spanish men. Andrology 2019; 8:323-331. [PMID: 31380611 DOI: 10.1111/andr.12690] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 06/27/2019] [Accepted: 07/12/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Relatively low sperm count was reported among young Spanish men in 2013. Several potential culprits have been suggested as explanations for reported trends in sperm counts in Western men, including lifestyles. Although controversial, some studies suggest that semen parameters, such as low sperm motility or abnormal morphology, may be associated with low serum vitamin D levels. OBJECTIVES To evaluate associations between semen parameters and reproductive hormones and serum 25-hydroxyvitamin D (25OHD) status in young Spanish men and to examine these associations in relation to dietary intake of vitamin D. MATERIALS AND METHODS This cross-sectional study includes 198 university students recruited in 2010-2011 in southern Spain, who provided samples of blood and semen and food frequencies. Semen quality was evaluated by measuring volume, concentration, sperm counts, motility, and morphology, according to the WHO guidelines. Serum samples were analyzed for total 25OHD and reproductive hormones, including FSH, LH, testosterone, inhibin B, and estradiol. Dietary vitamin D intake was assessed using a validated food frequency questionnaire. Associations with semen quality and reproductive hormones were examined using linear regression, adjusting for potential confounders. RESULTS Almost all men had adequate levels of serum vitamin D - only three men (1.5%) were vitamin D deficient (<30 nmol/L) and 17% were insufficient (<50 nmol/L). However, dietary vitamin D intakes were relatively low (below recommended 600 IU/day in 99% of men). Neither dietary intake nor serum vitamin D levels were associated with any sperm parameter or any reproductive hormone (all p ≥ 0.09). DISCUSSION We did not observe an association between vitamin D status and any reproductive parameter in our study population. CONCLUSIONS Our results suggest that serum vitamin D levels are sustained in Spanish men despite low dietary intake and therefore low vitamin D does not explain the poor semen quality previously observed in these young Spanish men.
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Affiliation(s)
- A Rudnicka
- Division of Preventive Medicine and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, Murcia, Spain
| | - E Adoamnei
- Division of Preventive Medicine and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, Murcia, Spain.,Biomedical Research Institute of Murcia (IMIB-Arrixaca), Murcia, Spain
| | - J A Noguera-Velasco
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), Murcia, Spain.,Department of Laboratory Medicine, "Virgen de la Arrixaca" University Hospital, Murcia, Spain
| | - J Vioque
- Nutritional Epidemiology Unit, Miguel Hernandez University, San Juan de Alicante, Spain.,CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - F Cañizares-Hernández
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), Murcia, Spain.,Department of Laboratory Medicine, "Virgen de la Arrixaca" University Hospital, Murcia, Spain
| | - J Mendiola
- Division of Preventive Medicine and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, Murcia, Spain.,Biomedical Research Institute of Murcia (IMIB-Arrixaca), Murcia, Spain.,CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - N Jørgensen
- Department of Growth and Reproduction, and International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - J E Chavarro
- Departments of Nutrition and Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.,Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - S H Swan
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - A M Torres-Cantero
- Division of Preventive Medicine and Public Health, Department of Public Health Sciences, University of Murcia School of Medicine, Murcia, Spain.,Biomedical Research Institute of Murcia (IMIB-Arrixaca), Murcia, Spain.,CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain.,Department of Preventive Medicine, "Virgen de la Arrixaca" University Clinical Hospital, Murcia, Spain
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Suliga E, Głuszek S. The relationship between diet, energy balance and fertility in men. INT J VITAM NUTR RES 2019; 90:514-526. [PMID: 30967104 DOI: 10.1024/0300-9831/a000577] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Research conducted in recent years provides more and more evidence that diet can have a significant impact on male fertility. The aim of the study was to analyze the relationship between diet, energy balance and fertility in men. A comprehensive literature search of published studies in various languages, was carried out in electronic databases. The direct analysis included 96 works published between 2008 and 2018, including 12 randomized controlled trials and 23 systematic reviews and meta-analyses. A strong adherence to a healthy dietary pattern is positively correlated with total sperm count, progressive motility and total motile sperm count (all p < 0.05). However, attention is drawn to the fact that foods that are considered "healthy" can sometimes contain a significant amount of pollution, which negatively affect the semen parameters. An adequate intake of antioxidants or their supplementation have been quite effective in the prevention and treatment of male infertility. The improvement of pregnancy rate after antioxidant therapy ranged in various studies from 11% to 41%. An important problem, however, may be choosing the right dose of the supplement or finding an appropriate combination of antioxidants that may be more effective than any single antioxidant. The normalization of men's body weight is beneficial for the quality of sperm and the concentration of male reproductive hormones. Further, long-term studies require the assessment of the impact of drastic weight loss after bariatric surgery on male fertility.
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Affiliation(s)
- Edyta Suliga
- Department of Nutrition and Dietetics, Institute of Public Health, Faculty of Medicine and Health Sciences, Jan Kochanowski University, Kielce, Poland
| | - Stanisław Głuszek
- Department of Surgery and Surgical Nursing with the Scientific Research Laboratory, Institute of Medical Sciences, Jan Kochanowski University, Kielce, Poland
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Human Semen Samples with High Antioxidant Reservoir May Exhibit Lower Post-Cryopreservation Recovery of Sperm Motility. Biomolecules 2019; 9:biom9030111. [PMID: 30893949 PMCID: PMC6468513 DOI: 10.3390/biom9030111] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 03/18/2019] [Indexed: 12/16/2022] Open
Abstract
Cryopreservation-thawing of human semen was found to reduce the level of antioxidant activity surrounding the sperm, which may negatively affect post-cryopreservation (post-thaw) recovery of sperm motility. Therefore, the current manufactured cryoprotectant media have been supplemented with certain antioxidants to preserve the loss in seminal antioxidant activity. In this study, we aimed to explore the correlation between total antioxidant capacity (TAC) of human semen samples before cryopreservation and the post-thaw recovery of sperm motility. Normal semen specimens (n = 77) were recruited in this study. Sperm motility was measured for each semen sample before and after cryopreservation and the post-thaw recovery of sperm motility was calculated. Seminal TAC was measured spectrophotometrically before cryopreservation for each semen sample using the sensitive cupric ion-reducing antioxidant capacity (CUPRAC) method. The results from this study showed that the post-thaw recovery of sperm motility is negatively correlated (p = 0.0404, p = 0.0402) with the absorbance at 450 nm and the values of seminal TAC in terms of µM Trolox equivalents, as evaluated by CUPRAC, respectively. In conclusion, the total antioxidant reservoir in each ejaculated semen specimen could be a factor in determining the post-thaw recovery of sperm motility toward lower recovery for semen specimens of high antioxidant content.
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Smits RM, Mackenzie‐Proctor R, Yazdani A, Stankiewicz MT, Jordan V, Showell MG. Antioxidants for male subfertility. Cochrane Database Syst Rev 2019; 3:CD007411. [PMID: 30866036 PMCID: PMC6416049 DOI: 10.1002/14651858.cd007411.pub4] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND The inability to have children affects 10% to 15% of couples worldwide. A male factor is estimated to account for up to half of the infertility cases with between 25% to 87% of male subfertility considered to be due to the effect of oxidative stress. Oral supplementation with antioxidants is thought to improve sperm quality by reducing oxidative damage. Antioxidants are widely available and inexpensive when compared to other fertility treatments, however most antioxidants are uncontrolled by regulation and the evidence for their effectiveness is uncertain. We compared the benefits and risks of different antioxidants used for male subfertility. This review did not examine the use of antioxidants in normospermic men. OBJECTIVES To evaluate the effectiveness and safety of supplementary oral antioxidants in subfertile men. SEARCH METHODS The Cochrane Gynaecology and Fertility (CGF) Group trials register, CENTRAL, MEDLINE, Embase, PsycINFO, CINAHL, and two trials registers were searched on 1 February 2018, together with reference checking and contact with study authors and experts in the field to identify additional trials. SELECTION CRITERIA We included randomised controlled trials (RCTs) that compared any type, dose or combination of oral antioxidant supplement with placebo, no treatment or treatment with another antioxidant, among subfertile men of a couple attending a reproductive clinic. We excluded studies comparing antioxidants with fertility drugs alone and studies that included fertile men attending a fertility clinic because of female partner infertility. DATA COLLECTION AND ANALYSIS We used standard methodological procedures recommended by Cochrane. The primary review outcome was live birth. Clinical pregnancy, adverse events and sperm parameters were secondary outcomes. MAIN RESULTS We included 61 studies with a total population of 6264 subfertile men, aged between 18 and 65 years, part of a couple who had been referred to a fertility clinic and some of whom were undergoing assisted reproductive techniques (ART). Investigators compared and combined 18 different oral antioxidants. The evidence was of 'low' to 'very low' quality: the main limitation was that out of the 44 included studies in the meta-analysis only 12 studies reported on live birth or clinical pregnancy. The evidence is current up to February 2018.Live birth: antioxidants may lead to increased live birth rates (OR 1.79, 95% CI 1.20 to 2.67, P = 0.005, 7 RCTs, 750 men, I2 = 40%, low-quality evidence). Results suggest that if in the studies contributing to the analysis of live birth rate, the baseline chance of live birth following placebo or no treatment is assumed to be 12%, the chance following the use of antioxidants is estimated to be between 14% and 26%. However, this result was based on only 124 live births from 750 couples in seven relatively small studies. When studies at high risk of bias were removed from the analysis, there was no evidence of increased live birth (Peto OR 1.38, 95% CI 0.89 to 2.16; participants = 540 men, 5 RCTs, P = 0.15, I2 = 0%).Clinical pregnancy rate: antioxidants may lead to increased clinical pregnancy rates (OR 2.97, 95% CI 1.91 to 4.63, P < 0.0001, 11 RCTs, 786 men, I2 = 0%, low-quality evidence) compared to placebo or no treatment. This suggests that if in the studies contributing to the analysis of clinical pregnancy, the baseline chance of clinical pregnancy following placebo or no treatment is assumed to be 7%, the chance following the use of antioxidants is estimated to be between 12% and 26%. This result was based on 105 clinical pregnancies from 786 couples in 11 small studies.Adverse eventsMiscarriage: only three studies reported on this outcome and the event rate was very low. There was no difference in miscarriage rate between the antioxidant and placebo or no treatment group (OR 1.74, 95% CI 0.40 to 7.60, P = 0.46, 3 RCTs, 247 men, I2 = 0%, very low-quality evidence). The findings suggest that in a population of subfertile men with an expected miscarriage rate of 2%, the chance following the use of an antioxidant would result in the risk of a miscarriage between 1% and 13%.Gastrointestinal: antioxidants may lead to an increase in mild gastrointestinal upsets when compared to placebo or no treatment (OR 2.51, 95% CI 1.25 to 5.03, P = 0.010, 11 RCTs, 948 men, I2 = 50%, very low-quality evidence). This suggests that if the chance of gastrointestinal upsets following placebo or no treatment is assumed to be 2%, the chance following the use of antioxidants is estimated to be between 2% and 9%. However, this result was based on a low event rate of 35 out of 948 men in 10 small or medium-sized studies, and the quality of the evidence was rated very low and was high in heterogeneity.We were unable to draw any conclusions from the antioxidant versus antioxidant comparison as insufficient studies compared the same interventions. AUTHORS' CONCLUSIONS In this review, there is low-quality evidence from seven small randomised controlled trials suggesting that antioxidant supplementation in subfertile males may improve live birth rates for couples attending fertility clinics. Low-quality evidence suggests that clinical pregnancy rates may also increase. Overall, there is no evidence of increased risk of miscarriage, however antioxidants may give more mild gastrointestinal upsets but the evidence is of very low quality. Subfertilte couples should be advised that overall, the current evidence is inconclusive based on serious risk of bias due to poor reporting of methods of randomisation, failure to report on the clinical outcomes live birth rate and clinical pregnancy, often unclear or even high attrition, and also imprecision due to often low event rates and small overall sample sizes. Further large well-designed randomised placebo-controlled trials reporting on pregnancy and live births are still required to clarify the exact role of antioxidants.
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Affiliation(s)
- Roos M Smits
- Radboud University Medical CenterDepartment of Gynaecology and ObstetricsNijmegenNetherlands
| | | | - Anusch Yazdani
- Queensland Fertility Group Research Foundation55 Little Edward St, Level 2 Boundary CourtSpring HillBrisbaneQueenslandAustralia4000
| | - Marcin T Stankiewicz
- Ashford Specialist Centre Suite 2257‐59 Anzac Highway AshfordAdelaideSAAustralia
| | - Vanessa Jordan
- University of AucklandDepartment of Obstetrics and GynaecologyPrivate Bag 92019AucklandNew Zealand1003
| | - Marian G Showell
- University of AucklandDepartment of Obstetrics and GynaecologyPrivate Bag 92019AucklandNew Zealand1003
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Zalazar L, Pagola P, Miró M, Churio M, Cerletti M, Martínez C, Iniesta-Cuerda M, Soler A, Cesari A, De Castro R. Bacterioruberin extracts from a genetically modified hyperpigmented Haloferax volcanii
strain: antioxidant activity and bioactive properties on sperm cells. J Appl Microbiol 2019; 126:796-810. [DOI: 10.1111/jam.14160] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 11/14/2018] [Accepted: 11/15/2018] [Indexed: 12/14/2022]
Affiliation(s)
- L. Zalazar
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
| | - P. Pagola
- Departamento de Química; FCEyN (UNMDP); Mar del Plata Argentina
| | - M.V. Miró
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
| | - M.S. Churio
- Departamento de Química; FCEyN (UNMDP); Mar del Plata Argentina
- IFIMAR; Instituto de Investigaciones Físicas de Mar del Plata (CONICET-UNMDP); Mar del Plata Argentina
| | - M. Cerletti
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
| | - C. Martínez
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
| | - M. Iniesta-Cuerda
- SaBio IREC (CSIC-UCLM-JCCM). ETSIAM. Campus Universitario; Albacete Spain
| | - A.J. Soler
- SaBio IREC (CSIC-UCLM-JCCM). ETSIAM. Campus Universitario; Albacete Spain
| | - A. Cesari
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
| | - R. De Castro
- Instituto de Investigaciones Biológicas; FCEyN; Universidad Nacional de Mar del Plata (UNMDP); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Mar del Plata Argentina
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[Associations between dietary inflammatory index and male reproductive parameters]. Rev Int Androl 2018; 17:79-87. [PMID: 31326042 DOI: 10.1016/j.androl.2018.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 03/05/2018] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The aim of this work was to assess the associations between the dietary inflammatory index (DII) and male reproductive parameters. MATERIAL AND METHOD Cross-sectional study of 209 healthy male university students (18-23 years old) recruited from October 2010 to November 2011 in Murcia Region (Southern Spain). Semen analyses (sperm concentration, motility and morphology) were carried out according to World Health Organization guidelines. Serum concentrations of follicle-stimulating and luteinizing hormones, estradiol, inhibin b and testosterone were also determined. Diet intake was assessed using a validated food frequency questionnaire. The DII assessed the inflammatory potential of one's diet. Negative or positive values of DII reflected anti-inflammatory or pro-inflammatory dietary status, respectively. Linear regression was used to analyze the relation between the DII score and semen quality parameters and reproductive hormone levels adjusting for potential important covariates. RESULTS We found statistically significant positive associations between the DII and progressive sperm motility (PR) (P, trend=0.03] and total sperm motility (PR+NP) (P, trend=0.04]. No significant associations were observed for other semen parameters or male reproductive hormones. CONCLUSIONS Our results suggest that a pro-inflammatory dietary status may be associated with increased sperm motility in young men, but will not impact sperm count, morphology or reproductive hormones. However, further research is needed to confirm these findings and extend these results to other male populations.
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Storm Power, an Icy Tower and Elsa’s Bower: The Winds of Change in Disney’s Frozen. SOCIAL SCIENCES-BASEL 2018. [DOI: 10.3390/socsci7060086] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Levine H, Jørgensen N, Martino-Andrade A, Mendiola J, Weksler-Derri D, Mindlis I, Pinotti R, Swan SH. Temporal trends in sperm count: a systematic review and meta-regression analysis. Hum Reprod Update 2018; 23:646-659. [PMID: 28981654 DOI: 10.1093/humupd/dmx022] [Citation(s) in RCA: 707] [Impact Index Per Article: 117.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 06/28/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Reported declines in sperm counts remain controversial today and recent trends are unknown. A definitive meta-analysis is critical given the predictive value of sperm count for fertility, morbidity and mortality. OBJECTIVE AND RATIONALE To provide a systematic review and meta-regression analysis of recent trends in sperm counts as measured by sperm concentration (SC) and total sperm count (TSC), and their modification by fertility and geographic group. SEARCH METHODS PubMed/MEDLINE and EMBASE were searched for English language studies of human SC published in 1981-2013. Following a predefined protocol 7518 abstracts were screened and 2510 full articles reporting primary data on SC were reviewed. A total of 244 estimates of SC and TSC from 185 studies of 42 935 men who provided semen samples in 1973-2011 were extracted for meta-regression analysis, as well as information on years of sample collection and covariates [fertility group ('Unselected by fertility' versus 'Fertile'), geographic group ('Western', including North America, Europe Australia and New Zealand versus 'Other', including South America, Asia and Africa), age, ejaculation abstinence time, semen collection method, method of measuring SC and semen volume, exclusion criteria and indicators of completeness of covariate data]. The slopes of SC and TSC were estimated as functions of sample collection year using both simple linear regression and weighted meta-regression models and the latter were adjusted for pre-determined covariates and modification by fertility and geographic group. Assumptions were examined using multiple sensitivity analyses and nonlinear models. OUTCOMES SC declined significantly between 1973 and 2011 (slope in unadjusted simple regression models -0.70 million/ml/year; 95% CI: -0.72 to -0.69; P < 0.001; slope in adjusted meta-regression models = -0.64; -1.06 to -0.22; P = 0.003). The slopes in the meta-regression model were modified by fertility (P for interaction = 0.064) and geographic group (P for interaction = 0.027). There was a significant decline in SC between 1973 and 2011 among Unselected Western (-1.38; -2.02 to -0.74; P < 0.001) and among Fertile Western (-0.68; -1.31 to -0.05; P = 0.033), while no significant trends were seen among Unselected Other and Fertile Other. Among Unselected Western studies, the mean SC declined, on average, 1.4% per year with an overall decline of 52.4% between 1973 and 2011. Trends for TSC and SC were similar, with a steep decline among Unselected Western (-5.33 million/year, -7.56 to -3.11; P < 0.001), corresponding to an average decline in mean TSC of 1.6% per year and overall decline of 59.3%. Results changed minimally in multiple sensitivity analyses, and there was no statistical support for the use of a nonlinear model. In a model restricted to data post-1995, the slope both for SC and TSC among Unselected Western was similar to that for the entire period (-2.06 million/ml, -3.38 to -0.74; P = 0.004 and -8.12 million, -13.73 to -2.51, P = 0.006, respectively). WIDER IMPLICATIONS This comprehensive meta-regression analysis reports a significant decline in sperm counts (as measured by SC and TSC) between 1973 and 2011, driven by a 50-60% decline among men unselected by fertility from North America, Europe, Australia and New Zealand. Because of the significant public health implications of these results, research on the causes of this continuing decline is urgently needed.
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Affiliation(s)
- Hagai Levine
- Braun School of Public Health and Community Medicine, Hadassah-Hebrew University, the Hebrew University Center of Excellence in Agriculture and Environmental Health, Ein Kerem Campus, PO BOX 12272, Jerusalem 9110202, Israel.,Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Niels Jørgensen
- University Department of Growth and Reproduction, University of Copenhagen, Rigshospitalet, CopenhagenDK-2100, Denmark
| | - Anderson Martino-Andrade
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.,Department of Physiology, Federal University of Parana, Curitiba 81531-980, Brazil
| | - Jaime Mendiola
- Division of Preventive Medicine and Public Health, University of Murcia School of Medicine and Biomedical Research Institute of Murcia (IMIB-Arrixaca-UMU), Murcia30100, Spain
| | - Dan Weksler-Derri
- Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva6676814, Israel
| | - Irina Mindlis
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY10029, USA
| | - Rachel Pinotti
- Gustave L. and Janet W. Levy Library, Icahn School of Medicine at Mount Sinai, New York, NY10029, USA
| | - Shanna H Swan
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY10029, USA
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Tomášek O, Albrechtová J, Němcová M, Opatová P, Albrecht T. Trade-off between carotenoid-based sexual ornamentation and sperm resistance to oxidative challenge. Proc Biol Sci 2018; 284:rspb.2016.2444. [PMID: 28123091 DOI: 10.1098/rspb.2016.2444] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 01/03/2017] [Indexed: 01/16/2023] Open
Abstract
It has been hypothesized that carotenoid-based sexual ornamentation signals male fertility and sperm competitive ability as both ornamentation and sperm traits may be co-affected by oxidative stress, resulting in positive covariation (the 'redox-based phenotype-linked fertility hypothesis'; redox-based PLFH). On the other hand, the 'sperm competition theory' (SCT) predicts a trade-off between precopulatory and postcopulatory traits. Here, we manipulate oxidative status (using diquat dibromide) and carotenoid availability in adult zebra finch (Taeniopygia guttata) males in order to test whether carotenoid-based beak ornamentation signals, or is traded off against, sperm resistance to oxidative challenge. Initial beak colouration, but not its change during the experiment, was associated with effect of oxidative challenge on sperm velocity, such that more intense colouration predicted an increase in sperm velocity under control conditions but a decline under oxidative challenge. This suggests a long-term trade-off between ornament expression and sperm resistance to oxidative challenge. Shortening of the sperm midpiece following oxidative challenge further suggests that redox homeostasis may constrain sperm morphometry. Carotenoid supplementation resulted in fewer sperm abnormalities but had no effect on other sperm traits. Overall, our data challenge the redox-based PLFH, partially support the SCT and highlight the importance of carotenoids for normal sperm morphology.
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Affiliation(s)
- Oldřich Tomášek
- Institute of Vertebrate Biology, The Czech Academy of Sciences, v.v.i., Květná 8, Brno 60365, Czech Republic .,Faculty of Science, Department of Zoology, Charles University, Viničná 7, Prague 2 12844, Czech Republic
| | - Jana Albrechtová
- Institute of Vertebrate Biology, The Czech Academy of Sciences, v.v.i., Květná 8, Brno 60365, Czech Republic
| | - Martina Němcová
- Faculty of Science, Department of Zoology, Charles University, Viničná 7, Prague 2 12844, Czech Republic
| | - Pavlína Opatová
- Institute of Vertebrate Biology, The Czech Academy of Sciences, v.v.i., Květná 8, Brno 60365, Czech Republic.,Faculty of Science, Department of Botany and Zoology, Masaryk University, Kotlářská 2, Brno 61137, Czech Republic
| | - Tomáš Albrecht
- Institute of Vertebrate Biology, The Czech Academy of Sciences, v.v.i., Květná 8, Brno 60365, Czech Republic .,Faculty of Science, Department of Zoology, Charles University, Viničná 7, Prague 2 12844, Czech Republic
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Ricci E, Al-Beitawi S, Cipriani S, Alteri A, Chiaffarino F, Candiani M, Gerli S, Viganó P, Parazzini F. Dietary habits and semen parameters: a systematic narrative review. Andrology 2017; 6:104-116. [PMID: 29266782 DOI: 10.1111/andr.12452] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 10/03/2017] [Accepted: 11/07/2017] [Indexed: 01/10/2023]
Abstract
Semen quality and male fertility are declining worldwide. As it was observed that physiologic and pathologic processes of spermatogenesis can be influenced by diet, the relation between dietary habits and semen parameters has been the focus of much interest. To review the human observational studies on this issue, we performed a systematic literature search, up to November 2016 (MEDLINE and EMBASE). We included all observational full-text papers reporting the relation between dietary habits and semen parameters. Article selection was carried out in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Twenty-three observational studies were included. Overall, 8477 healthy men and 1204 men presenting at Fertility Clinics were included in the selected studies. Even if some inconsistencies are present, possibly due to the different effect of nutrients in fertile and infertile men, results support the hypothesis that diets including fruit and vegetables, for their contents in vitamins, and fish or low-fat dairy products as the main source of proteins, are associated with better semen quality. Recommendations may be confidently provided because of the many beneficial effects of a healthy diet, although further studies are needed to clarify the currently inconsistent findings and to shed light on the underlying mechanisms.
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Affiliation(s)
- E Ricci
- Dipartimento della donna, del bambino e del neonato, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - S Al-Beitawi
- Reproductive Sciences Laboratory, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, Milan, Italy
| | - S Cipriani
- Dipartimento della donna, del bambino e del neonato, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - A Alteri
- Reproductive Sciences Laboratory, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, Milan, Italy
| | - F Chiaffarino
- Dipartimento della donna, del bambino e del neonato, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - M Candiani
- Obstetrics and Gynecology Unit, San Raffaele Scientific Institute and Vita-Salute University, Milano, Italy
| | - S Gerli
- Department of Obstetrics and Gynecology, University of Perugia, Perugia, Italy
| | - P Viganó
- Reproductive Sciences Laboratory, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, Milan, Italy
| | - F Parazzini
- Dipartimento della donna, del bambino e del neonato, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy.,Dipartimento di Scienze Cliniche e di Comunità, Università di Milano, Milano, Italy
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Salas-Huetos A, Bulló M, Salas-Salvadó J. Dietary patterns, foods and nutrients in male fertility parameters and fecundability: a systematic review of observational studies. Hum Reprod Update 2017; 23:371-389. [PMID: 28333357 DOI: 10.1093/humupd/dmx006] [Citation(s) in RCA: 247] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 02/28/2017] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Infertility is a global public health issue, affecting 15% of all couples of reproductive age. Male factors, including decreased semen quality, are responsible for ~25% of these cases. The dietary pattern, the components of the diet and nutrients have been studied as possible determinants of sperm function and/or fertility. OBJECTIVE AND RATIONALE Previous systematic reviews have been made of the few heterogeneous low-quality randomized clinical trials (RCTs) conducted in small samples of participants and investigating the effect of specific nutrients and nutritional supplements on male infertility. However, as yet there has been no systematic review of observational studies. SEARCH METHODS A comprehensive systematic review was made of the published literature, from the earliest available online indexing year to November 2016, in accordance with the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. We have included cross-sectional, case-control and prospective and retrospective studies in which fertile/infertile men were well defined (men with sperm disorders, sperm DNA damage, varicocele or idiopathic infertility). The primary outcomes were semen quality or fecundability. With the data extracted, we evaluated and scored the quality of the studies selected. We excluded RCTs, animal studies, review articles and low-quality studies. OUTCOMES A total of 1944 articles were identified, of which 35 were selected for qualitative analysis. Generally, the results indicated that healthy diets rich in some nutrients such as omega-3 fatty acids, some antioxidants (vitamin E, vitamin C, β-carotene, selenium, zinc, cryptoxanthin and lycopene), other vitamins (vitamin D and folate) and low in saturated fatty acids and trans-fatty acids were inversely associated with low semen quality parameters. Fish, shellfish and seafood, poultry, cereals, vegetables and fruits, low-fat dairy and skimmed milk were positively associated with several sperm quality parameters. However, diets rich in processed meat, soy foods, potatoes, full-fat dairy and total dairy products, cheese, coffee, alcohol, sugar-sweetened beverages and sweets have been detrimentally associated with the quality of semen in some studies. As far as fecundability is concerned, a high intake of alcohol, caffeine and red meat and processed meat by males has a negative influence on the chance of pregnancy or fertilization rates in their partners. WIDER IMPLICATIONS Male adherence to a healthy diet could improve semen quality and fecundability rates. Since observational studies may prove associations but not causation, the associations summarized in the present review need to be confirmed with large prospective cohort studies and especially with well-designed RCTs.
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Affiliation(s)
- Albert Salas-Huetos
- Human Nutrition Unit, Biochemistry and Biotechnology Department, Faculty of Medicine and Health Sciences, University Hospital of Sant Joan de Reus, IISPV, Universitat Rovira i Virgili, Reus, Spain.,CIBER Physiopathology of Obesity and Nutrition (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Mònica Bulló
- Human Nutrition Unit, Biochemistry and Biotechnology Department, Faculty of Medicine and Health Sciences, University Hospital of Sant Joan de Reus, IISPV, Universitat Rovira i Virgili, Reus, Spain.,CIBER Physiopathology of Obesity and Nutrition (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Jordi Salas-Salvadó
- Human Nutrition Unit, Biochemistry and Biotechnology Department, Faculty of Medicine and Health Sciences, University Hospital of Sant Joan de Reus, IISPV, Universitat Rovira i Virgili, Reus, Spain.,CIBER Physiopathology of Obesity and Nutrition (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
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Arhin SK, Zhao Y, Lu X, Chetry M, Lu J. Effect of micronutrient supplementation on IVF outcomes: a systematic review of the literature. Reprod Biomed Online 2017; 35:715-722. [PMID: 28919239 DOI: 10.1016/j.rbmo.2017.08.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 08/06/2017] [Accepted: 08/08/2017] [Indexed: 11/17/2022]
Abstract
There is accumulating evidence on the importance of micronutrients in improving fertility in couples undergoing IVF therapy. Despite this, studies reporting the relevant clinical outcomes of IVF, such as pregnancy and live birth rates, are very scarce. This review aimed to systematically summarize clinical evidence on the effect of micronutrients on primary outcome parameters of IVF treatment. The literature was searched up to February 2017 through Embase and PubMed databases for relevant studies. The quality of eligible studies was assessed with the Downs and Black checklist. A total of five studies qualified for inclusion. These studies reported outcomes on 467 participants administered micronutrient supplements alone or combined with other nutrients as part of IVF therapy. There was significant heterogeneity among the interventions and study designs. However, all the studies reported a positive impact of micronutrient supplementation on clinical outcomes of IVF therapy in terms of pregnancy rate and/or live birth rate. Within the limits of this review, micronutrients appear to influence positive outcomes in couples undergoing fertility treatment. Larger clinical studies are needed to strengthen these findings so that the benefit of micronutrients can be extended to subjects undergoing IVF therapy.
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Affiliation(s)
- Samuel Kofi Arhin
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 32500, China
| | - Yu Zhao
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 32500, China
| | - XiaoSheng Lu
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 32500, China
| | - Mandika Chetry
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 32500, China
| | - JieQiang Lu
- Department of Gynecology and Obstetrics, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 32500, China.
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Zhao J, Jin Y, Du M, Liu W, Ren Y, Zhang C, Zhang J. The effect of dietary grape pomace supplementation on epididymal sperm quality and testicular antioxidant ability in ram lambs. Theriogenology 2017; 97:50-56. [DOI: 10.1016/j.theriogenology.2017.04.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 03/20/2017] [Accepted: 04/04/2017] [Indexed: 12/19/2022]
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Oostingh EC, Steegers-Theunissen RP, de Vries JH, Laven JS, Koster MP. Strong adherence to a healthy dietary pattern is associated with better semen quality, especially in men with poor semen quality. Fertil Steril 2017; 107:916-923.e2. [DOI: 10.1016/j.fertnstert.2017.02.103] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 02/10/2017] [Accepted: 02/11/2017] [Indexed: 01/24/2023]
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42
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Foo YZ, Rhodes G, Simmons LW. The carotenoid beta-carotene enhances facial color, attractiveness and perceived health, but not actual health, in humans. Behav Ecol 2017. [DOI: 10.1093/beheco/arw188] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yong Zhi Foo
- ARC Centre of Excellence in Cognition and its Disorders, School of Psychology, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia, and
- Centre for Evolutionary Biology & School of Animal Biology, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
| | - Gillian Rhodes
- ARC Centre of Excellence in Cognition and its Disorders, School of Psychology, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia, and
| | - Leigh W. Simmons
- ARC Centre of Excellence in Cognition and its Disorders, School of Psychology, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia, and
- Centre for Evolutionary Biology & School of Animal Biology, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia
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Karayiannis D, Kontogianni MD, Mendorou C, Douka L, Mastrominas M, Yiannakouris N. Association between adherence to the Mediterranean diet and semen quality parameters in male partners of couples attempting fertility. Hum Reprod 2016; 32:215-222. [PMID: 27994040 DOI: 10.1093/humrep/dew288] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 10/10/2016] [Accepted: 10/27/2016] [Indexed: 02/06/2023] Open
Abstract
STUDY QUESTION Is adherence to the Mediterranean diet (MedDiet) associated with better semen quality in men of subfertile couples attempting fertility? SUMMARY ANSWER Greater adherence to the MedDiet, as assessed through the validated Mediterranean diet score (MedDietScore), was significantly associated with higher sperm concentration, total sperm count and sperm motility. WHAT IS KNOWN ALREADY A-posteriori dietary pattern approaches have revealed that dietary patterns characterized by high intakes of fruits, vegetables, whole grains, fish and low intake of meat are associated with better semen quality. Yet, whether adherence to the MedDiet is associated with better semen profile remains largely unexplored. STUDY DESIGN, SIZE, AND DURATION This was a cross-sectional study of 225 men from couples attending a fertility clinic in Athens, Greece, recruited between November 2013 and May 2016. The study was designed to evaluate the influence of habitual dietary intake and lifestyle on fertility outcomes. PARTICIPANTS/MATERIALS, SETTING, METHODS Men aged 26-55 years, 51.1% overweight or obese, 20.9% smokers, with complete dietary data were analyzed. Diet was assessed via a food-frequency questionnaire and adherence to the MedDiet was assessed through the MedDietScore (range: 0-55; higher scores indicating greater adherence to MedDiet). Semen quality was evaluated according to World Health Organization 2010 guidelines. Multiple logistic regression analysis was used to evaluate associations between tertiles of the MedDietScore and the likelihood of having abnormal semen parameters, after adjusting for potential confounders. MAIN RESULTS AND THE ROLE OF CHANCE Compared to men in the highest tertile of the MedDietScore (≥37, N = 66), a higher percentage of men in the lowest tertile of the score (≤30, N = 76) exhibited below the WHO reference values for sperm concentration (47.4% vs 16.7%, P < 0.001), total sperm count (55.3% vs 22.7%, P < 0.001), total motility (65.8% vs 31.8%, P < 0.001), progressive motility (84.2 vs 62.1%, P = 0.011) and sperm morphology (50.0 vs 28.8%, P = 0.023). In the multivariable adjusted models, men in the lowest tertile of the MedDietScore had ~2.6 times higher likelihood of having abnormal sperm concentration, total sperm count and motility, compared to men in the highest tertile of the score. LIMITATIONS, REASONS FOR CAUTION The main limitation of the study stems from its cross-sectional nature, limiting our ability to determine causality. WIDER IMPLICATIONS OF THE FINDINGS The results suggest that greater compliance to the MedDiet may help improve semen quality. Whether this translates into differences in male fertility remains to be elucidated. Our findings are consistent with previous studies showing that dietary patterns with some of the characteristics of the MedDiet, i.e. rich in fruit, vegetables, legumes and whole grains, are associated with better measures of semen quality. STUDY FUNDING/COMPETING INTERESTS No funding was obtained. The authors have no competing interests to declare. TRIAL REGISTRATION NUMBER n/a.
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Affiliation(s)
- Dimitrios Karayiannis
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University, Athens , Greece
| | - Meropi D Kontogianni
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University, Athens , Greece
| | | | - Lygeri Douka
- Embryogenesis Assisted Conception Unit, Athens , Greece
| | | | - Nikos Yiannakouris
- Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University, Athens , Greece
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Abbas MA. Is the use of plants in Jordanian folk medicine for the treatment of male sexual dysfunction scientifically based? Review of in vitro and in vivo human and animal studies. Andrologia 2016; 49. [PMID: 27312517 DOI: 10.1111/and.12619] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/26/2016] [Indexed: 01/10/2023] Open
Abstract
Male sexual dysfunction is a serious problem which has an impact on the quality of life. In Jordanian folk medicine, 56 plant species were reported to be used by males to improve sexual potency and as aphrodisiacs. The aim of this study was to search for scientific evidence justifying their folk use. Of the 15 studied plants, only five were found to enhance spermatogenesis. The other 10 were reported to decrease spermatogenesis at least by one study. The majority of the studied plants possessed a protective effect on testis in different in vivo models as well as antioxidant activities. The effect of these plants on steroidogenesis and the hypothalamic-gonadal axis was also reviewed. The effect of only five plants was studied on sexual behaviour enhancement and three of them were active. Three of the four studied plants enhanced erection. The mechanism of action of active constituents isolated from the studied plants was also investigated. In conclusion, many plants used in Jordanian folk medicine decreased or had no effect on spermatogenesis in animal models. These plants have antioxidant and/or adaptogenic effects, and this may result in a beneficial action on male reproductive system.
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Affiliation(s)
- M A Abbas
- Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, Jordan
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45
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Chiu YH, Gaskins AJ, Williams PL, Mendiola J, Jørgensen N, Levine H, Hauser R, Swan SH, Chavarro JE. Intake of Fruits and Vegetables with Low-to-Moderate Pesticide Residues Is Positively Associated with Semen-Quality Parameters among Young Healthy Men. J Nutr 2016; 146:1084-92. [PMID: 27075904 PMCID: PMC4841922 DOI: 10.3945/jn.115.226563] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 03/07/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Numerous studies have shown that occupational or environmental pesticide exposure can affect male fertility. There is less evidence, however, regarding any potentially adverse effects of pesticide residues in foods on markers of male fertility potential. OBJECTIVES We examined the relations between fruit and vegetable intake, considering pesticide residue status, and semen quality and serum concentrations of reproductive hormones in healthy young men. METHODS The Rochester Young Men's Study is a cross-sectional study that recruited men aged 18-22 y (n = 189) in Rochester, New York. Participants completed a questionnaire, provided a semen sample, had a blood sample drawn, and underwent a physical examination at enrollment. Semen samples were analyzed for total sperm count, sperm concentration, morphology, motility, ejaculate volume, total motile count, and total normal count. Dietary intake during the previous year was assessed by a validated food-frequency questionnaire. Fruit and vegetables were categorized as having high [Pesticide Residue Burden Score (PRBS) ≥4] or low-to-moderate (PRBS <4) pesticide residues on the basis of data from the USDA Pesticide Data Program. Linear regression models were used to analyze the associations of fruit and vegetable intake with semen variables and reproductive hormones while adjusting for potential confounding factors. RESULTS The total intake of fruit and vegetables was unrelated to semen quality. However, the intake of fruit and vegetables with low-to-moderate pesticide residues was associated with a higher total sperm count and sperm concentration, whereas the intake of fruit and vegetables with high pesticide residues was unrelated to semen quality. On average, men in the highest quartile of low-to-moderate-pesticide fruit and vegetable intake (≥2.8 servings/d) had a 169% (95% CI: 45%, 400%) higher total sperm count and a 173% (95% CI: 57%, 375%) higher sperm concentration than did men in the lowest quartile (<1.1 servings/d; P-trend = 0.003 and 0.0005, respectively). The intake of fruit and vegetables, regardless of pesticide-residue status, was not associated with reproductive hormone concentrations. CONCLUSIONS The consumption of fruit and vegetables with low-to-moderate pesticide residues was positively related to sperm counts in young men unselected by fertility status. This suggests that pesticide residues may modify the beneficial effects of fruit and vegetable intake on semen quality.
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Affiliation(s)
| | | | | | - Jaime Mendiola
- Division of Preventive Medicine and Public Health, University of Murcia School of Medicine, IMIB-Arrixaca, Murcia, Spain
| | - Niels Jørgensen
- University Department of Growth and Reproduction, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Hagai Levine
- Braun School of Public Health and Community Medicine, Hebrew University-Hadassah and the Hebrew University Center of Excellence in Agriculture and Environmental Health, Jerusalem, Israel;,Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY; and
| | - Russ Hauser
- Epidemiology,,Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA
| | - Shanna H Swan
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY; and
| | - Jorge E Chavarro
- Departments of Nutrition, Epidemiology, Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
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Lashmanova E, Proshkina E, Zhikrivetskaya S, Shevchenko O, Marusich E, Leonov S, Melerzanov A, Zhavoronkov A, Moskalev A. Fucoxanthin increases lifespan of Drosophila melanogaster and Caenorhabditis elegans. Pharmacol Res 2015; 100:228-41. [DOI: 10.1016/j.phrs.2015.08.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Revised: 08/07/2015] [Accepted: 08/13/2015] [Indexed: 12/19/2022]
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47
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Cutillas-Tolín A, Mínguez-Alarcón L, Mendiola J, López-Espín JJ, Jørgensen N, Navarrete-Muñoz EM, Torres-Cantero AM, Chavarro JE. Mediterranean and western dietary patterns are related to markers of testicular function among healthy men. Hum Reprod 2015; 30:2945-55. [PMID: 26409012 DOI: 10.1093/humrep/dev236] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Accepted: 08/27/2015] [Indexed: 11/14/2022] Open
Abstract
STUDY QUESTION Are there any associations of dietary patterns with semen quality, reproductive hormone levels, and testicular volume, as markers of testicular function? SUMMARY ANSWER These results suggest that traditional Mediterranean diets may have a positive impact on male reproductive potential. WHAT IS KNOWN ALREADY The Mediterranean diet has been related to lower risk of multiple chronic diseases, but its effects on reproduction potential are unclear. STUDY DESIGN, SIZE, DURATION Cross-sectional sample of 215 male university students recruited from October 2010 to November 2011 in Murcia Region (Spain). PARTICIPANTS/MATERIALS, SETTING, METHODS Two hundred and nine healthy men aged 18-23 years were finally included in this analysis. Diet was assessed using a validated food frequency questionnaire, and dietary patterns were identified by factor analysis. Linear regression was used to analyze the relation between diet patterns with semen quality parameters, reproductive hormone levels and testicular volume adjusting for potential confounders. MAIN RESULTS AND THE ROLE OF CHANCE We identified two dietary patterns: a Mediterranean (characterized by high intakes of vegetables, fruits and seafood) and a Western pattern (characterized by high intakes of processed meats, French fries and snacks). The Mediterranean pattern was positively associated with total sperm count (P, trend = 0.04). The Western pattern was positively related to the percentage of morphologically normal sperm (P, trend = 0.008). We found an inverse association between adherence to the Western pattern and sperm concentration among overweight or obese men (P, trend = 0.04). LIMITATIONS, REASONS FOR CAUTION As with all cross-sectional studies, causal inference is limited. However, participants were blinded to the study outcomes thus reducing the potential influenced their report of diet. Although we adjusted for a large number of known and suspected confounders, we cannot exclude the possibility of residual confounding or chance findings. WIDER IMPLICATIONS OF THE FINDINGS This study was carried out on healthy and young men, so it is difficult to predict whether and how the observed differences in semen quality translate into reproductive success for men in couples trying to conceive. These results suggest that traditional Mediterranean diets may have a positive impact on male reproductive potential.
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Affiliation(s)
- A Cutillas-Tolín
- Department of Health and Social Sciences, Division of Preventive Medicine and Public Health, University of Murcia School of Medicine, Espinardo Campus, Vía perimetral s/n, IMIB-Arrixaca, Murcia 30100, Spain
| | - L Mínguez-Alarcón
- Department of Health and Social Sciences, Division of Preventive Medicine and Public Health, University of Murcia School of Medicine, Espinardo Campus, Vía perimetral s/n, IMIB-Arrixaca, Murcia 30100, Spain
| | - J Mendiola
- Department of Health and Social Sciences, Division of Preventive Medicine and Public Health, University of Murcia School of Medicine, Espinardo Campus, Vía perimetral s/n, IMIB-Arrixaca, Murcia 30100, Spain
| | - J J López-Espín
- Center of Operations Research, Miguel Hernandez University, Elche Campus, Elche 03202, Spain
| | - N Jørgensen
- University Department of Growth and Reproduction, University of Copenhagen, Rigshospitalet, Copenhagen DK-20100, Denmark
| | - E M Navarrete-Muñoz
- CIBER de Epidemiología y Salud Pública (CIBERESP), Institute of Health Carlos III (ISCIII), Madrid 28029, Spain Department of Public Health, Miguel Hernández University, San Joan d'Alacant, Alicante 03550, Spain
| | - A M Torres-Cantero
- Department of Health and Social Sciences, Division of Preventive Medicine and Public Health, University of Murcia School of Medicine, Espinardo Campus, Vía perimetral s/n, IMIB-Arrixaca, Murcia 30100, Spain Regional Campus of International Excellence 'Campus Mare Nostrum', University of Murcia, Murcia 30100, Spain Department of Preventive Medicine, Reina Sofía University Hospital, Murcia 30003, Spain
| | - J E Chavarro
- Department of Nutrition and Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
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Garg H, Kumar R. Empirical Drug Therapy for Idiopathic Male Infertility: What is the New Evidence? Urology 2015; 86:1065-75. [PMID: 26255035 DOI: 10.1016/j.urology.2015.07.030] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 07/25/2015] [Accepted: 07/28/2015] [Indexed: 01/08/2023]
Abstract
Idiopathic male infertility is empirically managed using a number of drugs. We reviewed 64 articles published in the last 10 years on such drug therapy. There was severe heterogeneity in data along with poor definition of outcome parameters. Pregnancy or live birth rate was not reported in many studies. Antiestrogens appear to improve pregnancy rates while there is some data supporting the use of aromatase inhibitors. Antioxidants significantly increase the rate of both live birth and pregnancy but the data are limited. However, valid end-points based on data are limited for the empirical use of drugs in idiopathic male infertility.
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Affiliation(s)
- Harshit Garg
- Department of Urology, All India Institute of Medical Sciences, New Delhi, India
| | - Rajeev Kumar
- Department of Urology, All India Institute of Medical Sciences, New Delhi, India.
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49
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Collins GG, Rossi BV. The impact of lifestyle modifications, diet, and vitamin supplementation on natural fertility. FERTILITY RESEARCH AND PRACTICE 2015; 1:11. [PMID: 28620516 PMCID: PMC5424364 DOI: 10.1186/s40738-015-0003-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 07/16/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND Infertility is a relatively common condition. When patients are confronted with this diagnosis, there are medical, psychological, and financial sequelae. Patients often wonder if there is anything they can do to optimize their natural fertility or increase the effectiveness of infertility treatments. FINDINGS If there is a clear impact on fertility, such as with smoking and alcohol, cessation should be advised. Similarly, weight loss should be recommended if the BMI is in the overweight and obese category, and weight gain should be recommended for an underweight BMI. The evidence surrounding other lifestyle modifications is less clear. There are conflicting data regarding an optimal fertility diet and consumption of vitamins and supplements. Antioxidants seem to improve semen parameters in men, but the effect on female fertility is less clear. If conflicting evidence exists, such as with caffeine consumption or exercise, moderation should be emphasized. Finally, the diagnosis of infertility and subsequent fertility treatments are stressful for both partners. The psychological aspects should not be ignored and methods such as yoga and cognitive behavioral therapy may be beneficial. CONCLUSION Continued research will determine the optimal lifestyle modifications to achieve pregnancy.
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Affiliation(s)
- Gretchen Garbe Collins
- Department of Obstetrics and Gynecology, University Hospitals/ Case Western Reserve School of Medicine, 1000 Auburn Drive, Suite 310, Beachwood, OH 44122 USA
| | - Brooke V Rossi
- Department of Obstetrics and Gynecology, University Hospitals/ Case Western Reserve School of Medicine, 1000 Auburn Drive, Suite 310, Beachwood, OH 44122 USA
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Chiu YH, Afeiche MC, Gaskins AJ, Williams PL, Petrozza JC, Tanrikut C, Hauser R, Chavarro JE. Reply: Pesticide residues and semen quality. Hum Reprod 2015; 30:2241-2. [PMID: 26141708 DOI: 10.1093/humrep/dev165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y H Chiu
- Department of Nutrition, Harvard School of Public Health, Boston, MA 02115, USA
| | - M C Afeiche
- Department of Environmental Health, Harvard School of Public Health, Boston, MA 02115, USA
| | - A J Gaskins
- Department of Nutrition, Harvard School of Public Health, Boston, MA 02115, USA
| | - P L Williams
- Department of Epidemiology, Harvard School of Public Health, Boston, MA 02115, USA Department of Biostatistics, Harvard School of Public Health, Boston, MA 02115, USA
| | - J C Petrozza
- Vincent Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - C Tanrikut
- Department of Urology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - R Hauser
- Department of Environmental Health, Harvard School of Public Health, Boston, MA 02115, USA Department of Epidemiology, Harvard School of Public Health, Boston, MA 02115, USA
| | - J E Chavarro
- Department of Nutrition, Harvard School of Public Health, Boston, MA 02115, USA Department of Epidemiology, Harvard School of Public Health, Boston, MA 02115, USA Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
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