1. Validation of targeted microsurgical spermatic cord denervation: Comparison of outcomes to traditional complete microsurgical spermatic cord denervation
Asian Journal of Andrology 2019;21(4):319-323
The aim of this study was to validate the effectiveness of targeted microsurgical spermatic cord denervation (MSCD) of the trifecta nerve complex in comparison to traditional full MSCD with complete skeletonization of the spermatic cord in men with chronic orchialgia. Retrospective chart review was performed by a single fellowship-trained microsurgeon between 2011 and 2016. Patients had follow-ups at 6 weeks, 6 months, and 1 year postoperatively. Thirty-nine men with chronic orchialgia underwent full MSCD between 2011 and 2013. In July 2013, after the publication of an anatomic study with identification of Wallerian degeneration of the trifecta nerve complex in men with chronic orchialgia, the technique was changed to targeted MSCD. From July 2013 to March 2016, 43 men underwent targeted MSCD. When comparing the full MSCD group to the targeted MSCD group, there was no significant difference in resolution of pain (66.7% vs 69.8%, P = 0.88), no difference in partial relief of pain (17.9% vs 23.3%, P = 0.55), and no difference in failure to respond rates (15.4% vs 7.0%, P = 0.22) between the two groups. There was no difference in mean change of visual analog pain scale scores between the two groups (P = 0.27). Targeted MSCD had a shorter operative time (53 min vs 21 min, P = 0.0001). Targeted MSCD offers patients comparable outcomes to traditional full MSCD, with a shorter operative time, a less technically challenging surgery, and potentially less risk to cord structures which should be preserved.
2.Validation of targeted microsurgical spermatic cord denervation: comparison of outcomes to traditional complete microsurgical spermatic cord denervation.
Asian Journal of Andrology 2019;21(4):319-323
The aim of this study was to validate the effectiveness of targeted microsurgical spermatic cord denervation (MSCD) of the trifecta nerve complex in comparison to traditional full MSCD with complete skeletonization of the spermatic cord in men with chronic orchialgia. Retrospective chart review was performed by a single fellowship-trained microsurgeon between 2011 and 2016. Patients had follow-ups at 6 weeks, 6 months, and 1 year postoperatively. Thirty-nine men with chronic orchialgia underwent full MSCD between 2011 and 2013. In July 2013, after the publication of an anatomic study with identification of Wallerian degeneration of the trifecta nerve complex in men with chronic orchialgia, the technique was changed to targeted MSCD. From July 2013 to March 2016, 43 men underwent targeted MSCD. When comparing the full MSCD group to the targeted MSCD group, there was no significant difference in resolution of pain (66.7% vs 69.8%, P = 0.88), no difference in partial relief of pain (17.9% vs 23.3%, P = 0.55), and no difference in failure to respond rates (15.4% vs 7.0%, P = 0.22) between the two groups. There was no difference in mean change of visual analog pain scale scores between the two groups (P = 0.27). Targeted MSCD had a shorter operative time (53 min vs 21 min, P = 0.0001). Targeted MSCD offers patients comparable outcomes to traditional full MSCD, with a shorter operative time, a less technically challenging surgery, and potentially less risk to cord structures which should be preserved.
Adult
;
Aged
;
Denervation/methods*
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Humans
;
Male
;
Microsurgery/methods*
;
Middle Aged
;
Pain/surgery*
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Spermatic Cord/innervation*
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Testicular Diseases/surgery*
;
Treatment Outcome
;
Young Adult
3.Twist and Shout: A Clinical and Experimental Review of Testicular Torsion.
Riyad T ELLATI ; Parviz K KAVOUSSI ; Terry T TURNER ; Jeffrey J LYSIAK
Korean Journal of Urology 2009;50(12):1159-1167
PURPOSE: This review addresses different aspects of testicular torsion from the clinical perspective as well as the basic cellular and molecular events responsible for the post-torsion testicular changes and pathology, including tissue ischemia-reperfusion injury. MATERIALS AND METHODS: A review of all published literature on testicular torsion was performed by use of two search engines. RESULTS: Testicular torsion, or more correctly termed torsion of the spermatic cord, is a surgical emergency in order to salvage the testis. Its incidence is approximately 1 in 4,000 per annum. Testicular torsion must be treated promptly to avoid loss of the ipsilateral testis; however, even with torsion repair and gross testicular salvage, significant injury may still occur. CONCLUSIONS: The cellular and molecular mechanisms leading to ischemia-reperfusion injury are incompletely understood, and adjuncts to surgical treatment have received little attention. Understanding the cellular and molecular effects is important because 25% of males with a history of torsion may experience adult infertility. This review emphasizes current knowledge of basic science results and clinical outcomes of testicular torsion.
Adult
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Apoptosis
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Emergencies
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Humans
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Incidence
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Infertility
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Ischemia
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Male
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Reperfusion
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Reperfusion Injury
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Spermatic Cord
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Spermatic Cord Torsion
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Testis
4.Male Infertility: New Developments, Current Challenges, and Future Directions
Murat GÜL ; Giorgio Ivan RUSSO ; Hussein KANDIL ; Florence BOITRELLE ; Ramadan SALEH ; Eric CHUNG ; Parviz KAVOUSSI ; Taymour MOSTAFA ; Rupin SHAH ; Ashok AGARWAL
The World Journal of Men's Health 2024;42(3):502-517
There have been many significant scientific advances in the diagnostics and treatment modalities in the field of male infertility in recent decades. Examples of these include assisted reproductive technologies, sperm selection techniques for intracytoplasmic sperm injection, surgical procedures for sperm retrieval, and novel tests of sperm function. However, there is certainly a need for new developments in this field. In this review, we discuss advances in the management of male infertility, such as seminal oxidative stress testing, sperm DNA fragmentation testing, genetic and epigenetic tests, genetic manipulations, artificial intelligence, personalized medicine, and telemedicine. The role of the reproductive urologist will continue to expand in future years to address different topzics related to diverse questions and controversies of pathophysiology, diagnosis, and therapy of male infertility, training researchers and physicians in medical and scientific research in reproductive urology/ andrology, and further development of andrology as an independent specialty.
5.Impact of Varicocele on Testicular Oxidative Stress and Sperm Parameters in Experimental Animals: A Systematic Review and Meta-Analysis
Giorgio Ivan RUSSO ; Ramadan SALEH ; Federica FINOCCHI ; Almas Ramadhani JUMA ; Damayanthi DURAIRAJANAYAGAM ; Oguzhan KAHRAMAN ; Emrullah SÖĞÜTDELEN ; Ioannis SOKOLAKIS ; Ranjit B. VISHWAKARMA ; Fahmi BAHAR ; Ahmed M. HARRAZ ; Parviz KAVOUSSI ; Widi ATMOKO ; Eric CHUNG ; Naveen KUMAR ; Wael ZOHDY ; Amarnath RAMBHATLA ; Mohamed ARAFA ; Nguyen Ho Vinh PHUOC ; Gianmaria SALVIO ; Aldo E. CALOGERO ; Tuncay TOPRAK ; Germar-Michael PINGGERA ; Rossella CANNARELLA ; Giovanni COLPI ; Taha Abo-Almagd Abdel-Meguid HAMODA ; Rupin SHAH ; Ashok AGARWAL
The World Journal of Men's Health 2024;42(3):563-573
Purpose:
Varicocele has been associated with high seminal oxidative stress (OS), impaired semen quality, and reduced male fertility potential. However, the exact mechanism(s) underlying the development of varicocele-mediated infertility and the cause-effect relationship between varicocele and testicular dysfunction are not fully understood. The aim of this systematic review and meta-analysis (SRMA) is to investigate the impact of varicocele on testicular OS markers and sperm parameters in experimental animals with varicocele as compared to animals without varicocele.
Materials and Methods:
A literature search was performed using the Scopus and PubMed databases on studies that investigated testicular OS markers and sperm parameters in animals with varicocele. The primary outcomes included malondialdehyde (MDA) (nmol/mg) levels whereas the secondary outcomes included total sperm count (×106), sperm vitality (%), total sperm motility (%), and sperm DNA fragmentation (SDF) (%). Standardized mean difference (SMD) (95% confidence interval [CI]) was chosen to express the effect size. The quality of the included studies was evaluated using the Cambridge Quality Checklist.
Results:
Out of 76 identified articles, 6 studies on rats were included in the meta-analysis. The analysis showed a significant increase of MDA (SMD: 15.61 [1.93, 29.29]; p=0.03) in rats with varicocele vs. controls. We also observed a significant decrease in total sperm count (SMD: -17.45 [-28.97, -5.93]; p<0.01), sperm vitality (SMD: -16.41 [-26.30, -6.52]; p<0.01), total sperm motility (SMD: -17.67 [-24.90, -10.44]; p<0.01), and a significant increase of SDF (SMD: 7.41 [1.23, 13.59]; p=0.02), in rats with varicocele vs. controls. The quality of the included studies was ranked as high.
Conclusions
This SRMA indicates a significant increase in levels of testicular MDA and SDF and a reduction of sperm quality in experimental animals with varicocele. These findings support the potential role of testicular OS in the development of varicocele-induced testicular damage.
6.The Renaissance of Male Infertility Management in the Golden Age of Andrology
Aldo E. CALOGERO ; Rossella CANNARELLA ; Ashok AGARWAL ; Taha Abo-Almagd ABDEL-MEGUID HAMODA ; Amarnath RAMBHATLA ; Ramadan SALEH ; Florence BOITRELLE ; Imad ZIOUZIOU ; Tuncay TOPRAK ; Murat GUL ; Tomer AVIDOR-REISS ; Parviz KAVOUSSI ; Eric CHUNG ; Ponco BIROWO ; Ramy Abou GHAYDA ; Edmund KO ; Giovanni COLPI ; Fotios DIMITRIADIS ; Giorgio Ivan RUSSO ; Marlon MARTINEZ ; Gokhan CALIK ; Hussein KANDIL ; Gianmaria SALVIO ; Taymour MOSTAFA ; Haocheng LIN ; Hyun Jun PARK ; Nazim GHERABI ; Nguyen Ho VINH PHUOC ; Nguyen QUANG ; Ricky ADRIANSJAH ; Sandro La VIGNERA ; Sava MICIC ; Damayanthi DURAIRAJANAYAGAM ; Ege Can SEREFOGLU ; Vilvapathy Senguttuvan KARTHIKEYAN ; Priyank KOTHARI ; Widi ATMOKO ; Rupin SHAH
The World Journal of Men's Health 2023;41(2):237-254
Infertility affects nearly 186 million people worldwide and the male partner is the cause in about half of the cases. Meta-regression data indicate an unexplained decline in sperm concentration and total sperm count over the last four decades, with an increasing prevalence of male infertility. This suggests an urgent need to implement further basic and clinical research in Andrology. Andrology developed as a branch of urology, gynecology, endocrinology, and, dermatology. The first scientific journal devoted to andrological sciences was founded in 1969. Since then, despite great advancements, andrology has encountered several obstacles in its growth. In fact, for cultural reasons, the male partner has often been neglected in the diagnostic and therapeutic workup of the infertile couple. Furthermore, the development of assisted reproductive techniques (ART) has driven a strong impression that this biotechnology can overcome all forms of infertility, with a common belief that having a spermatozoon from a male partner (a sort of sperm donor) is all that is needed to achieve pregnancy. However, clinical practice has shown that the quality of the male gamete is important for a successful ART outcome. Furthermore, the safety of ART has been questioned because of the high prevalence of comorbidities in the offspring of ART conceptions compared to spontaneous conceptions. These issues have paved the way for more research and a greater understanding of the mechanisms of spermatogenesis and male infertility. Consequently, numerous discoveries have been made in the field of andrology, ranging from genetics to several “omics” technologies, oxidative stress and sperm DNA fragmentation, the sixth edition of the WHO manual, artificial intelligence, management of azoospermia, fertility in cancers survivors, artificial testis, 3D printing, gene engineering, stem cells therapy for spermatogenesis, and reconstructive microsurgery and seminal microbiome. Nevertheless, as many cases of male infertility remain idiopathic, further studies are required to improve the clinical management of infertile males. A multidisciplinary strategy involving both clinicians and scientists in basic, translational, and clinical research is the core principle that will allow andrology to overcome its limits and reach further goals. This state-of-the-art article aims to present a historical review of andrology, and, particularly, male infertility, from its “Middle Ages” to its “Renaissance”, a golden age of andrology.
7.Impact of Antioxidant Therapy on Natural Pregnancy Outcomes and Semen Parameters in Infertile Men: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Ashok AGARWAL ; Rossella CANNARELLA ; Ramadan SALEH ; Ahmed M. HARRAZ ; Hussein KANDIL ; Gianmaria SALVIO ; Florence BOITRELLE ; Shinnosuke KURODA ; Ala’a FARKOUH ; Amarnath RAMBHATLA ; Armand ZINI ; Giovanni COLPI ; Murat GÜL ; Parviz KAVOUSSI ; Taha Abo-Almagd Abdel-Meguid HAMODA ; Edmund KO ; Gokhan CALIK ; Tuncay TOPRAK ; Germar-Michael PINGGERA ; Hyun Jun PARK ; Ramy Abou GHAYDA ; Suks MINHAS ; Gian Maria BUSETTO ; Mustafa Emre BAKIRCIOĞLU ; Ates KADIOGLU ; Eric CHUNG ; Giorgio Ivan RUSSO ; Aldo E. CALOGERO ; Rafael F. AMBAR ; Channa N. JAYASENA ; Rupin SHAH
The World Journal of Men's Health 2023;41(1):14-48
Purpose:
Seminal oxidative stress (OS) is a recognized factor potentially associated with male infertility, but the efficacy of antioxidant (AOX) therapy is controversial and there is no consensus on its utility. Primary outcomes of this study were to investigate the effect of AOX on spontaneous clinical pregnancy, live birth and miscarriage rates in male infertile patients. Secondary outcomes were conventional semen parameters, sperm DNA fragmentation (SDF) and seminal OS.
Materials and Methods:
Literature search was performed using Scopus, PubMed, Ovid, Embase, and Cochrane databases.Only randomized controlled trials (RCTs) were included and the meta-analysis was conducted according to PRISMA guidelines.
Results:
We assessed for eligibility 1,307 abstracts, and 45 RCTs were finally included, for a total of 4,332 infertile patients.We found a significantly higher pregnancy rate in patients treated with AOX compared to placebo-treated or untreated controls, without significant inter-study heterogeneity. No effects on live-birth or miscarriage rates were observed in four studies.A significantly higher sperm concentration, sperm progressive motility, sperm total motility, and normal sperm morphology was found in patients compared to controls. We found no effect on SDF in analysis of three eligible studies. Seminal levels of total antioxidant capacity were significantly higher, while seminal malondialdehyde acid was significantly lower in patients than controls. These results did not change after exclusion of studies performed following varicocele repair.
Conclusions
The present analysis upgrades the level of evidence favoring a recommendation for using AOX in male infertility to improve the spontaneous pregnancy rate and the conventional sperm parameters. The failure to demonstrate an increase in live-birth rate, despite an increase in pregnancy rates, is due to the very few RCTs specifically assessing the impact of AOX on live-birth rate. Therefore, further RCTs assessing the impact of AOX on live-birth rate and miscarriage rate, and SDF will be helpful.
8.Effects of Varicocele Repair on Sperm DNA Fragmentation and Seminal Malondialdehyde Levels in Infertile Men with Clinical Varicocele:A Systematic Review and Meta-Analysis
Rossella CANNARELLA ; Rupin SHAH ; Ramadan SALEH ; Florence BOITRELLE ; Taha Abo-Almagd Abdel-Meguid HAMODA ; Rajender SINGH ; Gianmaria SALVIO ; Tuncay TOPRAK ; Marco FALCONE ; Murat GUL ; Fotios DIMITRIADIS ; Amarnath RAMBHATLA ; Giorgio I. RUSSO ; Edmund KO ; Armand ZINI ; Parviz KAVOUSSI ; Nguyen Ho Vinh PHUOC ; Hussein KANDIL ; Ramy Abou GHAYDA ; Ponco BIROWO ; Nazim GHERABI ; Erman CEYHAN ; Jie DONG ; Vineet MALHOTRA ; Damayanthi DURAIRAJANAYAGAM ; Bircan KOLBASI ; Fahmi BAHAR ; Gokhan CALIK ; Selahittin ÇAYAN ; Germar-Michael PINGGERA ; Aldo E. CALOGERO ; Osvaldo RAJMIL ; Taymour MOSTAFA ; Widi ATMOKO ; Ahmed M. HARRAZ ; Tan V. LE ; Jean de la ROSETTE ; Lukman HAKIM ; Edoardo PESCATORI ; Oleg SERGEYEV ; Ayman RASHED ; Pallavi SAINI ; Ashok AGARWAL
The World Journal of Men's Health 2024;42(2):321-337
Purpose:
Varicoceles can be a source of elevated seminal oxidative stress (OS) and sperm DNA fragmentation (SDF). However, it remains unclear whether varicocele repair (VR) could reduce these parameters. This systematic review and meta-analysis (SRMA) aims to investigate the impact of VR on SDF and seminal malondialdehyde (MDA).
Materials and Methods:
A literature search was performed in Scopus, PubMed, Ovid, Embase, and Cochrane databases. This SRMA included randomized controlled trials and observational studies reporting the pre- and postoperative levels of SDF and seminal OS in infertile men with clinical varicocele that underwent VR. Subgroup analyses included techniques of VR and SDF testing. The effect size was expressed as standardized mean difference (SMD).
Results:
Out of 1,632 abstracts assessed for eligibility, 29 studies with 1,491 infertile men were included. The analysis showed a significant reduction in SDF after VR, compared to preoperative values (SMD −1.125, 95% confidence interval [CI] −1.410, −0.840; p<0.0001) with high inter-study heterogeneity (I2=90.965%). Reduction in SDF was evident with microsurgical technique and non-microsurgical inguinal approaches (SMD −1.014, 95% CI −1.263, −0.765; p<0.0001, and SMD −1.495, 95% CI −2.116, −0.873; p<0.0001), respectively. Reduction in SDF was significant irrespective of testing was done by sperm chromatin dispersion (SMD −2.197, 95% CI −3.187, −1.207; p<0.0001), sperm chromatin structure assay (SMD −0.857, 95% CI −1.156, −0.559; p<0.0001) or TUNEL (SMD −1.599, 95% CI −2.478, −0.719; p<0.0001). A significant decrease in seminal MDA levels was observed following VR (SMD −2.450, 95% CI −3.903 to −0.997, p=0.001) with high inter-study heterogeneity (I2=93.7%).
Conclusions
Using pre- and post-intervention data, this SRMA indicates a significant reduction in SDF and seminal MDA levels in infertile men with clinical varicocele treated with VR. These findings may have important implications for the future management of this selected group of infertile patients.
9.The impact of ipsilateral testicular atrophy on semen quality and sperm DNA fragmentation response to varicocele repair.
Parviz K KAVOUSSI ; Natasha ABDULLAH ; Melissa S GILKEY ; Caitlin HUNN ; G Luke MACHEN ; Shu-Hung CHEN ; Keikhosrow M KAVOUSSI ; Amy ESQUEDA ; J David WININGER ; Shahryar K KAVOUSSI
Asian Journal of Andrology 2021;23(2):146-149
Varicoceles adversely impact semen quality and sperm DNA fragmentation, which typically improve with surgical repair. Some men with varicoceles have ipsilateral testicular atrophy due to damage from the varicocele. This study assessed semen quality and the sperm DNA fragmentation index (DFI) response to varicocele repair in men with ipsilateral testicular atrophy (TA) versus men with no testicular atrophy (NTA). Semen parameter values and DFI in both groups were compared preoperatively and postoperatively. The Mann-Whitney U test and the Wilcoxon signed-rank test were used where appropriate. There were 20 men in the TA group and 121 men in the NTA group with no difference in age, varicocele grade, or preoperative semen parameter values between the two groups. The NTA group had a higher preoperative DFI than the TA group. Both groups showed improvement in semen quality postoperatively, only the TA group showed a significant improvement in DFI, whereas the NTA group showed significant improvements in several parameter values and DFI. The change from preoperative to postoperative parameter values when comparing the two groups revealed a difference in total sperm motile count and DFI, with a larger mean improvement in the NTA group than in the TA group. Both TA and NTA groups showed improved semen quality and DFI after varicocele repair, but the NTA group had more improvement than the TA group. However, only total motile count (TMC) and DFI had a significantly greater mean change in preoperative to postoperative response in the NTA group than in the TA group.
10.Impact of Varicocele Repair on Semen Parameters in Infertile Men: A Systematic Review and Meta-Analysis
Ashok AGARWAL ; Rossella CANNARELLA ; Ramadan SALEH ; Florence BOITRELLE ; Murat GÜL ; Tuncay TOPRAK ; Gianmaria SALVIO ; Mohamed ARAFA ; Giorgio I. RUSSO ; Ahmed M. HARRAZ ; Rajender SINGH ; Nicolas GARRIDO ; Taha Abo-Almagd ABDEL-MEGUID HAMODA ; Amarnath RAMBHATLA ; Parviz KAVOUSSI ; Shinnosuke KURODA ; Gökhan ÇALIK ; Pallavi SAINI ; Erman CEYHAN ; Fotios DIMITRIADIS ; Ralf HENKEL ; Andrea CRAFA ; Ayad PALANI ; Mesut Berkan DURAN ; Evangelos MAZIOTIS ; Émine SAÏS ; Marion BENDAYAN ; Mahsa DARBANDI ; Tan V. LE ; Sezgin GUNES ; Petroula TSIOULOU ; Pallav SENGUPTA ; Berk HAZIR ; Gökhan ÇEKER ; Sara DARBANDI ; Damayanthi DURAIRAJANAYAGAM ; Azin AGHAMAJIDI ; Noora ALKHALIDI ; Emrullah SOGUTDELEN ; Kristian LEISEGANG ; Abdullah ALARBID ; Christopher C. K. HO ; Vineet MALHOTRA ; Federica FINOCCHI ; Luís CRISÓSTOMO ; Raghavender KOSGI ; Haitham ELBARDISI ; Armand ZINI ; Ponco BIROWO ; Giovanni COLPI ; Hyun Jun PARK ; Ege Can SEREFOGLU ; Quang NGUYEN ; Edmund KO ; Jean de la ROSETTE ; Germar M. PINGGERA ; Ho Vinh Phuoc NGUYEN ; Hussein KANDIL ; Rupin SHAH
The World Journal of Men's Health 2023;41(2):289-310
Purpose:
Despite the significant role of varicocele in the pathogenesis of male infertility, the impact of varicocele repair (VR) on conventional semen parameters remains controversial. Only a few systematic reviews and meta-analyses (SRMAs) have evaluated the impact of VR on sperm concentration, total motility, and progressive motility, mostly using a before-after analytic approach. No SRMA to date has evaluated the change in conventional semen parameters after VR compared to untreated controls. This study aimed to evaluate the effect of VR on conventional semen parameters in infertile patients with clinical varicocele compared to untreated controls.
Materials and Methods:
A literature search was performed using Scopus, PubMed, Embase, and Cochrane databases following the Population Intervention Comparison Outcome (PICOS) model (Population: infertile patients with clinical varicocele; Intervention: VR [any technique]; Comparison: infertile patients with clinical varicocele that were untreated; Outcome: sperm concentration, sperm total count, progressive sperm motility, total sperm motility, sperm morphology, and semen volume; Study type: randomized controlled trials and observational studies).
Results:
A total of 1,632 abstracts were initially assessed for eligibility. Sixteen studies were finally included with a total of 2,420 infertile men with clinical varicocele (1,424 patients treated with VR vs. 996 untreated controls). The analysis showed significantly improved post-operative semen parameters in patients compared to controls with regards to sperm concentration (standardized mean difference [SMD] 1.739; 95% CI 1.129 to 2.349; p<0.001; I2=97.6%), total sperm count (SMD 1.894; 95% CI 0.566 to 3.222; p<0.05; I2=97.8%), progressive sperm motility (SMD 3.301; 95% CI 2.164 to 4.437; p<0.01; I2=98.5%), total sperm motility (SMD 0.887; 95% CI 0.036 to 1.738; p=0.04; I2=97.3%) and normal sperm morphology (SMD 1.673; 95% CI 0.876 to 2.470; p<0.05; I2=98.5%). All the outcomes showed a high inter-study heterogeneity, but the sensitivity analysis showed that no study was sensitive enough to change these results. Publication bias was present only in the analysis of the sperm concentration and progressive motility. No significant difference was found for the semen volume (SMD 0.313; 95% CI -0.242 to 0.868; I2=89.7%).
Conclusions
This study provides a high level of evidence in favor of a positive effect of VR to improve conventional semen parameters in infertile men with clinical varicocele. To the best of our knowledge, this is the first SRMA to compare changes in conventional semen parameters after VR with changes in parameters of a control group over the same period. This is in contrast to other SRMAs which have compared semen parameters before and after VR, without reference to a control group. Our findings strengthen the available evidence and have a potential to upgrade professional societies’ practice recommendations favoring VR to improve conventional semen parameters in infertile men.