Turkiye Klinikleri Journal of Health Sciences

.: REVIEW
Erkek İnfertilitesinde Koenzim Q10
Coenzyme Q10 in Male Infertility
Ayçıl ÖZTURAN ŞİRİNa, Yasemin AKDEVELİOĞLUb
aDepartment of Nutrition and Dietetics, Adnan Menderes University Faculty of Health Sciences, Aydın, TURKEY
bDepartment of Nutrition and Dietetics, Gazi University Faculty of Health Sciences, Ankara, TURKEY
Turkiye Klinikleri J Health Sci. 2021;6(1):139-47
doi: 10.5336/healthsci.2020-75062
Article Language: EN
Full Text
ABSTRACT
Currently the male factor is frequently encountered in the infertility problem. Basically, the factors that cause sperm dysfunction and male infertility are environmental, physiological and genetic. Excessive amount of reactive oxygen species and other oxidant radicals have been associated with male infertility. In addition, although semen analysis parameters appear normal in idiopathic male infertility, it is suggested that the possible cause of infertility is oxidative stress. Antioxidants in foods that are protective against oxidative stress increase the success of assisted reproductive techniques by protecting spermatozoa from free oxygen radicals, preventing DNA breaks caused by free oxygen radicals, and supporting the sperm maturation process. Coenzyme Q10 (CoQ10), which is found in every cell and has the ability to dissolve in oil, is a vitamin-like compound that acts as a coenzyme in key enzymatic reactions in energy production in the cell. Endogenous CoQ10, is significantly associated with sperm count and motility and is shown as one of the most important antioxidants in seminal plasma. Exogenous CoQ10 administration can be explained by its positive effects on sperm motility, its effectiveness in mitochondria and its antioxidant effects. In this review, articles investigating the effect of oxidative stress on infertility and the role of CoQ10, a natural antioxidant vitamin in the treatment of infertility, were presented. As a result, the positive effects of using CoQ10 as a supportive treatment in male infertility have been shown in studies. However, more comprehensive, long-term and pregnancy-related studies are needed.

Keywords: İnfertilite; koenzim Q10; oksidatif stress
ÖZET
Günümüzde infertilite problemi içerisinde erkek faktörü sıklıkla karşımıza çıkmaktadır. Temel olarak sperm fonksiyon bozukluğu ve erkek infertilitesine neden olan faktörler çevresel, fizyolojik ve genetiktir. Aşırı miktarda bulunan reaktif oksijen türü ve diğer oksidan radikaller erkek infertilitesi ile ilişkilendirilmiştir. Ayrıca idiyopatik erkek infertilitesinde semen analizi parametreleri normal görünmesine rağmen olası infertilite nedeninin oksidatif stres olduğu öne sürülmektedir. Besinlerde bulunan ve oksidatif strese karşı koruyucu olan antioksidanlar spermatozoayı serbest oksijen radikallerinden koruyarak, serbest oksijen radikallerinin neden olduğu DNA kırılmalarını önleyerek, sperm olgunlaşma sürecine destek vererek yardımcı üreme tekniklerinin başarısını artırmaktadır. Her hücrede bulunan ve yağda çözünebilme özelliğine sahip olan koenzim Q10 (CoQ10), hücrede enerji üretiminde kilit enzimatik reaksiyonlarda koenzim olarak görev yapan vitamin benzeri bir bileşiktir. Endojen CoQ10 sperm sayısı ve hareketliliği ile önemli ölçüde ilişkili olup, seminal plazmada en önemli antioksidanlardan biri olarak gösterilmektedir. Eksojen CoQ10 uygulamasının sperm hareketliliği üzerine olumlu etkilerinin olması, mitokondrideki etkinliği ve antioksidan etkileri ile açıklanabilmektedir. Bu derlemede, oksidatif stresin infertilite üzerindeki etkisini ve infertilite tedavisinde doğal bir antioksidan vitamin olan CoQ10'in rolünü araştıran makaleler incelenmiştir. Sonuç olarak, yapılan çalışmalarda genel olarak CoQ10'in destekleyici bir tedavi olarak erkek infertilitesinde kullanımının olumlu etkileri gösterilmiştir. Ancak, daha kapsamlı, uzun süreli ve gebelikle ilgili sonuçların da değerlendirildiği çalışmaların yapılmasına ihtiyaç duyulmaktadır.

Anahtar Kelimeler: Infertility; coenzyme Q10; oxidative stress
REFERENCES:
  1. Zegers-Hochschild F, Adamson GD, de Mouzon J, Ishihara O, Mansour R, Nygren K, et al; International Committee for Monitoring Assisted Reproductive Technology; World Health Organization. International Committee for Monitoring Assisted Reproductive Technology (ICMART) and the World Health Organization (WHO) revised glossary of ART terminology, 2009. Fertil Steril. 2009;92(5):1520-4.[Crossref] [PubMed] 
  2. WHO. World Health Organization, Department of Reproductive Health and Research. WHO laboratory manual for examination and processing of human semen, 5th edn. 2010.
  3. Zeren F, Gürsoy E. [The Importance of dyadic adjustment and quality of life in infertile couples]. Koç Üniversitesi Hemşirelikte Eğitim ve Araştırma Dergisi (HEAD). 2019;16(1):68-72.[Link] 
  4. Hacettepe Üniversitesi Nüfus Etütleri Enstitüsü. 2013 Türkiye Nüfus ve Sağlık Araştırması. Hacettepe Üniversitesi Nüfus Etütleri Enstitüsü, T.C. Kalkınma Bakanlığı ve TÜBİTAK, Ankara; 2014. p.116.[Link] 
  5. Adewoyin M, Ibrahim M, Roszaman R, Isa MLM, Alewi NAM, Rafa AAA, et al. Male Infertility: The Effect of Natural Antioxidants and Phytocompounds on Seminal Oxidative Stress. Diseases. 2017;5(1):9.[Crossref] [PubMed] [PMC] 
  6. Kumar N, Singh AK. Trends of male factor infertility, an important cause of infertility: A review of literature. J Hum Reprod Sci. 2015;8(4):191-6.[Crossref] [PubMed] [PMC] 
  7. Balercia G, Mancini A, Tirabassi G, Pontecorvi A. Coenzyme Q10 in Male Infertility. In: Antioxidants in Andrology. Springer; 2017. p. 43-57.[Crossref] 
  8. Gharagozloo P, Aitken RJ. The role of sperm oxidative stress in male infertility and the significance of oral antioxidant therapy. Hum Reprod. 2011;26(7):1628-40.[Crossref] [PubMed] 
  9. Aitken RJ, Baker MA, De Iuliis GN, Nixon B. New insights into sperm physiology and pathology. Handb Exp Pharmacol. 2010;(198):99-115.[Crossref] [PubMed] 
  10. Tunç L. [Male infertility and nitric oxides] . Gazi Üniversitesi Üroloji AD., Türk Androloji Derneği, Androloji Bülteni. 2006;25(8):128-30.[Link] 
  11. Karatağ T, Kendirci M. [The place of antioxidant therapy in male infertility]. Androloji Bülteni. 2013;15(55):263-7.[Link] 
  12. Çayan S, Özdemir UDA, Orhan İ, Altay B, Kadıoğlu A. [The effect of oxidative stress on fertility and the place of anti-oxidant therapy in infertile men]. Androloji Bülteni. 2015;17(61):118-24.[Link] 
  13. Gualtieri R, Barbato V, Fiorentino I, Braun S, Rizos D, Longobardi S, et al. Treatment with zinc, d-aspartate, and coenzyme Q10 protects bull sperm against damage and improves their ability to support embryo development. Theriogenology. 2014;82(4):592-8.[Crossref] [PubMed] 
  14. Cornelli U. Antioxidant use in nutraceuticals. Clin Dermatol. 2009;27(2):175-94.[Crossref] [PubMed] 
  15. Yılmaz İ. [Some food containing antioxidants and oxidatif stres]. Journal of Inonu University Medical Faculty. 2010;17(2):143-13.[Link] 
  16. Demirtaş A, Üntan İ. [Antioxidants and oxidative stress in seminal fluid and sperm]. Türk Ürol Sem. 2011;2:24-30.[Link] 
  17. Balasuriya A, Serhal P, Doshi A, Harper JC. Processes involved in assisted reproduction technologies significantly increase sperm DNA fragmentation and phosphatidylserine translocation. Andrologia. 2014;46(2):86-97.[Crossref] [PubMed] 
  18. Lombardo F, Sansone A, Romanelli F, Paoli D, Gandini L, Lenzi A, et al. The role of antioxidant therapy in the treatment of male infertility: an overview. Asian J Androl. 2011;13(5):690-7.[Crossref] [PubMed] [PMC] 
  19. Overvad K, Diamant B, Holm L, Holmer G, Mortensen SA, Stender S, et al. Coenzyme Q10 in health and disease. Eur J Clin Nutr. 1999;53(10):764-70.[Crossref] [PubMed] 
  20. Parkhideh D. Methods and compositions that enhance bioavailability of coenzyme-Q10. In: Google Patents US20090054530, 2008.[Link] 
  21. Turunen M, Olsson J, Dallner G. Metabolism and function of coenzyme Q. Biochim Biophys Acta. 2004;1660(1-2):171-99.[Crossref] [PubMed] 
  22. Crane FL. Biochemical functions of coenzyme Q10. J Am Coll Nutr. 2001;20(6):591-8.[Crossref] [PubMed] 
  23. Ercan P, Sedef E. [Bioavailability and importance of coenzyme q10 in nutrition and health]. TÜBAV Bilim Dergisi. 2010;3(2):192-200.[Link] 
  24. Mancini A, Balercia G. Coenzyme Q(10) in male infertility: physiopathology and therapy. Biofactors. 2011;37(5):374-80.[Crossref] [PubMed] 
  25. Arslan S, Ayaz A. [The role of antioxidants in male infertility]. Journal of Nutrition and Dietetics. 2018;46(2):201-7.[Crossref] 
  26. Miquel J, Ramírez-Boscá A, Ramírez-Bosca JV, Alperi JD. Menopause: a review on the role of oxygen stress and favorable effects of dietary antioxidants. Arch Gerontol Geriatr. 2006;42(3):289-306.[Crossref] [PubMed] 
  27. Shaum KM, Polotsky AJ. Nutrition and reproduction: is there evidence to support a "Fertility Diet" to improve mitochondrial function? Maturitas. 2013;74(4):309-12.[Crossref] [PubMed] [PMC] 
  28. Quinzii CM, Hirano M, DiMauro S. CoQ10 deficiency diseases in adults. Mitochondrion. 2007;7:S122-6.[Crossref] [PubMed] [PMC] 
  29. López LC, Quinzii CM, Area E, Naini A, Rahman S, Schuelke M, et al. Treatment of CoQ(10) deficient fibroblasts with ubiquinone, CoQ analogs, and vitamin C: time- and compound-dependent effects. PLoS One. 2010;5(7):e11897.[Crossref] [PubMed] [PMC] 
  30. Omar MI, Pal RP, Kelly BD, Bruins HM, Yuan Y, Diemer T, et al. Benefits of Empiric Nutritional and Medical Therapy for Semen Parameters and Pregnancy and Live Birth Rates in Couples with Idiopathic Infertility: A Systematic Review and Meta-analysis. Eur Urol. 2019;75(4):615-25.[Crossref] [PubMed] 
  31. Littarru GP, Tiano L. Clinical aspects of coenzyme Q10: an update. Nutrition. 2010;26(3):250-4.[Crossref] [PubMed] 
  32. Balercia G, Mancini A, Paggi F, Tiano L, Pontecorvi A, Boscaro M, et al. Coenzyme Q10 and male infertility. J Endocrinol Invest. 2009;32(7):626-32.[Crossref] [PubMed] 
  33. Balercia G, Buldreghini E, Vignini A, Tiano L, Paggi F, Amoroso S, et al. Coenzyme Q10 treatment in infertile men with idiopathic asthenozoospermia: a placebo-controlled, double-blind randomized trial. Fertil Steril. 2009;91(5):1785-92.[Crossref] [PubMed] 
  34. Safarinejad MR. Efficacy of coenzyme Q10 on semen parameters, sperm function and reproductive hormones in infertile men. J Urol. 2009;182(1):237-48.[Crossref] [PubMed] 
  35. Festa R, Giacchi E, Raimondo S, Tiano L, Zuccarelli P, Silvestrini A, et al. Coenzyme Q10 supplementation in infertile men with low-grade varicocele: an open, uncontrolled pilot study. Andrologia. 2014;46(7):805-7.[Crossref] [PubMed] 
  36. Safarinejad MR, Safarinejad S, Shafiei N, Safarinejad S. Effects of the reduced form of coenzyme Q10 (ubiquinol) on semen parameters in men with idiopathic infertility: a double-blind, placebo controlled, randomized study. J Urol. 2012;188(2):526-31.[Crossref] [PubMed] 
  37. Nadjarzadeh A, Shidfar F, Amirjannati N, Vafa MR, Motevalian SA, Gohari MR, et al. Effect of Coenzyme Q10 supplementation on antioxidant enzymes activity and oxidative stress of seminal plasma: a double-blind randomised clinical trial. Andrologia. 2014;46(2):177-83.[Crossref] [PubMed] 
  38. Safarinejad MR. The effect of coenzyme Q₁₀ supplementation on partner pregnancy rate in infertile men with idiopathic oligoasthenoteratozoospermia: an open-label prospective study. Int Urol Nephrol. 2012;44(3):689-700.[Crossref] [PubMed] 
  39. Lafuente R, González-Comadrán M, Solà I, López G, Brassesco M, Carreras R, et al. Coenzyme Q10 and male infertility: a meta-analysis. J Assist Reprod Genet. 2013;30(9):1147-56.[Crossref] [PubMed] [PMC] 
  40. Alahmar AT. The effects of oral antioxidants on the semen of men with idiopathic oligoasthenoteratozoospermia. Clin Exp Reprod Med. 2018;45(2):57-66.[Crossref] [PubMed] [PMC] 
  41. Ghanbarzadeh S, Garjani A, Ziaee M, Khorrami A. CoQ10 and L-carnitine attenuate the effect of high LDL and oxidized LDL on spermatogenesis in male rats. Drug Res (Stuttg). 2014;64(10):510-5.[Crossref] [PubMed] 
  42. Thakur AS, Littarru GP, Funahashi I, Painkara US, Dange NS, Chauhan P, et al. Effect of Ubiquinol Therapy on Sperm Parameters and Serum Testosterone Levels in Oligoasthenozoospermic Infertile Men. J Clin Diagn Res. 2015;9(9):BC01-3.[PubMed] [PMC] 
  43. Nadjarzadeh A, Sadeghi MR, Amirjannati N, Vafa MR, Motevalian SA, Gohari MR, et al. Coenzyme Q10 improves seminal oxidative defense but does not affect on semen parameters in idiopathic oligoasthenoteratozoospermia: a randomized double-blind, placebo controlled trial. J Endocrinol Invest. 2011;34(8):e224-8.[PubMed] 
  44. Tiseo BC, Gaskins AJ, Hauser R, Chavarro JE, Tanrikut C; EARTH Study Team. Coenzyme Q10 Intake From Food and Semen Parameters in a Subfertile Population. Urology. 2017;102:100-5.[Crossref] [PubMed] [PMC] 
  45. Salas-Huetos A, Rosique-Esteban N, Becerra-Tomás N, Vizmanos B, Bulló M, Salas-Salvadó J, et al. The Effect of Nutrients and Dietary Supplements on Sperm Quality Parameters: A Systematic Review and Meta-Analysis of Randomized Clinical Trials. Adv Nutr. 2018;9(6):833-48.[Crossref] [PubMed] [PMC] 
  46. Ross C, Morriss A, Khairy M, Khalaf Y, Braude P, Coomarasamy A, et al. A systematic review of the effect of oral antioxidants on male infertility. Reprod Biomed Online. 2010;20(6):711-23.[Crossref] [PubMed] 
  47. Safarinejad MR. Safety and efficacy of coenzyme Q10 supplementation in early chronic Peyronie's disease: a double-blind, placebo-controlled randomized study. Int J Impot Res. 2010;22(5):298-309.[Crossref] [PubMed] 
  48. Lewin A, Lavon H. The effect of coenzyme Q10 on sperm motility and function. Mol Aspects Med. 1997;18:S213-9.[Crossref] [PubMed] 
  49. Lipovac M, Bodner F, Imhof M, Chedraui P. Comparison of the effect of a combination of eight micronutrients versus a standard mono preparation on sperm parameters. Reprod Biol Endocrinol. 2016;14(1):84.[Crossref] [PubMed] [PMC] 
  50. Talevi R, Barbato V, Fiorentino I, Braun S, Longobardi S, Gualtieri R, et al. Protective effects of in vitro treatment with zinc, d-aspartate and coenzyme q10 on human sperm motility, lipid peroxidation and DNA fragmentation. Reprod Biol Endocrinol. 2013;11:81.[Crossref] [PubMed] [PMC] 
  51. Eroglu M, Sahin S, Durukan B, Ozakpinar OB, Erdinc N, Turkgeldi L, et al. Blood serum and seminal plasma selenium, total antioxidant capacity and coenzyme q10 levels in relation to semen parameters in men with idiopathic infertility. Biol Trace Elem Res. 2014;159(1-3):46-51.[Crossref] [PubMed] 
  52. Gvozdjáková A, Kucharská J, Dubravicky J, Mojto V, Singh RB. Coenzyme Q₁₀, α-tocopherol, and oxidative stress could be important metabolic biomarkers of male infertility. Dis Markers. 2015;2015:827941.[Crossref] [PubMed] [PMC] 

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www.turkiyeklinikleri.com website belongs to Ortadoğu Advertisement Presentation Publishing Tourism Education Architecture Industry and Trade Inc. and is designed in order to inform physicians in the field of health

www.turkiyeklinikleri.com cannot reach to user’s identity, address, service providers or other information. The users may send this information to the website through forms if they would like to. However, www.turkiyeklinikleri.com may collect your hardware and software information. The information consists of your IP address, browser type, operating system, domain name, access time, and related websites. www.turkiyeklinikleri.com cannot sell the provided user information (your name, e-mail address, home and work address, phone number) to the third parties, publish it publicly, or keep it in the website. Gathered information has a directing feature to be a source for the website’s visitor profile, reporting and promotion of the services.

www.turkiyeklinikleri.com uses the taken information:

-To enhance, improve and maintain the quality of the website

-To generate visitor’s profile and statistical data

-To determine the tendency of the visitors on using our website

-To send print publications/correspondences

-To send press releases or notifications through e-mail

-To generate a list for an event or competition

By using www.turkiyeklinikleri.com you are considered to agree that;

-Ortadoğu Advertisement Presentation Publishing Tourism Education Architecture Industry and Trade Inc. cannot be hold responsible for any user’s illegal and immoral behavior,

-Terms of use may change from time to time,

-It is not responsible for other websites’ contents it cannot control or the harms they may cause although it uses the connection they provided.

Ortadoğu Advertisement Presentation Publishing Tourism Education Architecture Industry and Trade Inc. may block the website to users in the following events:

-Information with wrong, incomplete, deceiving or immoral expressions is recorded to the website,

-Proclamation, advertisement, announcement, libelous expressions are used against natural person or legal identity,

-During various attacks to the website,

-Disruption of the website because of a virus.

Written, visual and audible materials of the website, including the code and the software are under protection by legal legislation.

Without the written consent of Ortadoğu Advertisement Presentation Publishing Tourism Education Architecture Industry and Trade Inc. the information on the website cannot be downloaded, changed, reproduced, copied, republished, posted or distributed.

All rights of the software and the design of the website belong to Ortadoğu Advertisement Presentation Publishing Tourism Education Architecture Industry and Trade Inc.

Ortadoğu Advertisement Presentation Publishing Tourism Education Architecture Industry and Trade Inc. will be pleased to hear your comments about our terms of use. Please share the subjects you think may enrich our website or if there is any problem regarding our website.

info@turkiyeklinikleri.com