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Background: Testicular microlithiasis (TM) is thought to be associated with testicular tumors and impaired spermatogenesis; however, its etiology remains unclear., Objectives: To identify factors, other than testicular function, that are associated with testicular microlithiasis., Materials and Methods: We enrolled males who underwent ultrasound examination of the scrotum at Tokyo Dental College Ichikawa General Hospital. The patients were categorized into two groups: those with or those without testicular microlithiasis. Background and blood test data were compared between the groups., Results: Testicular microlithiasis was observed in 72 of the 828 (8.7%) patients enrolled. Ages ranged from 15 to 87 years (mean age, 40.0 years). A history of germ cell tumor was significantly more prevalent in patients with testicular microlithiasis than in those without (1.3 vs. 16.7%; p < 0.001). Blood test data showed that, patients with testicular microlithiasis had significantly higher serum creatinine levels (0.91 vs. 1.04 mg/dL; p = 0.046) and lower calcium levels (9.4 vs. 9.3 mg/dL; p = 0.031) than those without. Serum creatinine levels (> 1.00 mg/dL) and germ cell tumors were significantly associated with testicular microlithiasis in both univariate and multivariate analyses. The prevalence of testicular microlithiasis increased in patients older than 50 years. Age (> 50 years) was associated with testicular microlithiasis in univariate analysis. The mean body weight tended to be heavier (70.7 vs. 72.2 kg; p = 0.051) and epididymitis was observed more frequently (3.2 vs. 8.3%; p = 0.056) in patients with testicular microlithiasis than in those without., Discussion and Conclusion: A history of testicular tumors and elevated serum creatinine levels were associated with testicular microlithiasis. Testicular microlithiasis was observed across all age groups, with a tendency to increase in patients older than 50 years. Patients with testicular microlithiasis were slightly heavier and had a higher prevalence of epididymitis than those without. Our findings suggest that, in addition to testicular dysgenesis, other factors are involved in the development of testicular microlithiasis., (© 2023 American Society of Andrology and European Academy of Andrology.)

Hypothalamic integrity increasingly is being recognized as a marker of healthy longevity in rodent models. Insight into hypothalamic function in humans with exceptional longevity can be gained via investigation of the hypothalamic-pituitary-testicular (HPT) axis in men with exceptional longevity. This study aimed to characterize the HPT axis function, defined by levels of testosterone (T) and luteinizing hormone (LH), in 84 Ashkenazi Jewish men aged 90-106 years. We found that 94% of men exhibited preserved hypothalamic-pituitary function, as evidenced by either normal testosterone and LH levels (25%) or an appropriate rise in LH in response to aging-related primary testicular dysfunction (69%), a hormone pattern mirroring female menopause. Total T level was not associated with metabolic parameters or survival. These results demonstrate a high prevalence of testicular dysfunction with preserved hypothalamic-pituitary function in men with exceptional longevity. Thus, the role of hypothalamic integrity and HPT axis in healthy aging warrants further investigation., (© 2022 The Authors. Aging Cell published by Anatomical Society and John Wiley & Sons Ltd.)

Rationale: Chromosome karyotype analysis and SRY (sex determined region of Y chromosome) gene detection are routines for the diagnosis of growth hormone deficiency (GHD), but further whole exome gene sequencing occasionally leads to subversive results and unexpected conclusions., Patient Concerns: We report a single case of a 7-year-old Chinese boy who had stunted growth since he was 1 year old. He was short in height (height Standard Deviation Score (SDS) was less than 2.9), bilateral scrotal dysplasia and delayed bone age., Diagnosis: His growth hormone (GH) stimulation tests showed GHD. His karyotype analysis and polymerase chain reaction (PCR) analyses indicated a 46, XX disorder of sex development (DSD) without the presence of the SRY gene. Nevertheless, considering that female gonad was not observed in the chest and abdominal magnetic resonance imaging, the whole exome gene sequencing was performed. Sequencing data confirmed the presence of SRY gene sequence and two copies of chromosome X. Later, using different primer sequences for PCR, it showed that the SRY gene was positive. The final diagnosis was a rare case of "46, XX (SRY positive) testicular DSD with GHD"., Interventions: The boy's parents agreed to use recombinant human growth hormone (rhGH) for GHD treatment, the starting dose was 0.035 mg / kg / day. But they disagreed with molecular diagnostics and genomic analysis of the Y chromosome., Outcomes: The boy was treated with rhGH for 3 months and his height increased by 2.2 cm. The patient will be followed-up until the end of his puberty., Lessons: In summary, whole exome gene sequencing overturned the preliminary diagnosis results of karyotype analysis and SRY gene detection, and found that there may be a certain correlation between testicular DSD and GHD., Competing Interests: The authors have no conflicts of interest to disclose., (Copyright © 2021 the Author(s). Published by Wolters Kluwer Health, Inc.)

Background: The peptide hormone insulin-like factor 3 (INSL3) is a marker for Leydig cell function and the clinical use of serum INSL3 measurements has been suggested by several groups., Aim: (1) To establish a reference range for liquid chromatography-tandem mass spectrometry (LC-MS/MS) of serum INSL3 in healthy boys and men; and (2) to compare the associations of serum INSL3 and testosterone (T) to pubertal stage, lifestyle factors, diurnal variation, body composition, and human chorionic gonadotropin (hCG) stimulation., Results: In a reference range based on LC-MS/MS analysis of serum from 1073 boys and men, INSL3 increased from levels close to the detection limit (0.03 µg/L) in prepubertal boys to a maximum mean level of 1.3 µg/L (95% CI, 0.9-2.7) in young men (19-40 years of age) and decreased slightly in older men (0.1 µg/L per decade). Serum T, but not INSL3, was associated with body mass index or body fat percentage and with alcohol consumption. Smoking was positively associated with serum T, but negatively associated with INSL3. There were significant diurnal variations in both INSL3 and T in men (P < 0.001), but serum INSL3 varied substantially less, compared with serum T (± 11% vs ± 26%). Mean serum INSL3 increased after hCG stimulation, but less than T (+ 17% vs + 53%). In both healthy men and in patients suspected of testicular failure, baseline serum INSL3 was more closely associated to the hCG-induced increase in serum T than baseline T itself., Conclusion: Measurement of serum INSL3 by LC-MS/MS has promise as a marker of testicular disorders., (© Endocrine Society 2020. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Cyclosporine A is one of the most widely used drugs in organ transplant and oncology patients. But its use is accompanied by many toxicities. This study aimed to investigate the possible protective effect of Costus afer (C. afer) leaf extract on cyclosporine A-induced testicular toxicity. This study was carried out on 40 adult male Wistar rats were divided into four groups: control, C. afer, cyclosporine A and cyclosporine A+ C. afer groups. The investigations include genital weight, sperm count and characters, serum luteinising hormone (LH) and testosterone, testicular tissue contents of reduced glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSHPx) and lipid peroxidation (MDA). Besides, a histopathological examination of testicular tissue stained with haematoxylin and eosin (H & E) was performed. Cyclosporine A+ C. afer group showed a significant increase in the genital weight, serum testosterone, sperm count, motility and viability. Besides, the extract significantly decreased testicular content of MDA and increased SOD, CAT and GSHPx. C. afer coadministration significantly decreased serum LH and sperm abnormalities and protected against testicular histopathological alterations. The extract showed a protective effect against testicular toxicity associated with cyclosporine A and that was through an antioxidant mechanism., (© 2020 Blackwell Verlag GmbH.)

Twisting of the spermatic cord is considered a popular problem in the urological field, which may lead to testicular necrosis and male infertility. Sitagliptin, a glucose-lowering agent, proved to have a vindicatory function in myocardial and renal ischaemia/reperfusion (I/R), but its role in testicular I/R has not yet been studied. The current work investigates its capability to recover the testicular I/R injury with shedding more light on the mechanism of its action. Four groups were used: sham, sham pretreated with sitagliptin, I/R and sitagliptin/I/R-pretreated groups. The outcomes proved that I/R significantly decreased the serum testosterone, with a major increase in oxidative, inflammatory and nitrosative stress, along with a reduction in testicular vascular endothelial growth factor-A level with marked germinal cell apoptosis. However, pretreatment with sitagliptin significantly reversed the profound testicular I/R damaging effects, on the basis of its antioxidant, anti-inflammatory and anti-apoptotic activities with the ability of recuperation of the testicular vascularity., (© 2019 Blackwell Verlag GmbH.)

Our aim was to measure the ability of ischaemia-modified albumin (IMA) to predict testicular histopathological damage in the testes of rats with short- and long-term ischaemia using experimental testicular torsion and subsequent reperfusion via detorsion.21 Wistar Albino rats were randomized into three groups. The sham group was subjected to a mid-scrotal incision only. The 4- and 8-hr T/D (Torsion/Detorsion) groups were subjected to left testicular torsion by twisting the testes by 720 degrees counterclockwise. 2 cc venous blood samples were taken from the sham group after the mid-scrotal incision, and from the 4- and 8-hr T/D groups after 4 and 8 hr respectively. After that, the 4- and 8-hr T/D groups were subjected to detorsion. Two days later, orchiectomy was performed. Ischaemia-modified albumin levels were significantly different among the groups at 48 hr prior to orchiectomy (reperfusion; p = .003). Based on the results of the paired comparisons, it was found that IMA levels of the sham group were significantly higher than those of the 4- and 8-hr T/D groups (p = .002 and .009 respectively). Our study has showed that IMA may be used to predict ischaemia/reperfusion injury, which is another complication that may occur following detorsion in testicular torsion., (© 2019 Blackwell Verlag GmbH.)

Objective: Testicular involvement or atrophy in leprosy is silent, unreported, and under-estimated. The aim of this study was to assess the frequency of testicular atrophy and its consequences through the examination of clinical manifestations, hormonal profile, and semen analysis in leprosy patients., Methods: A descriptive observational study using a cross-sectional design and consecutive sampling method was conducted from May to July 2018. The study was conducted in Dr. Hasan Sadikin General Hospital, Bandung, Indonesia and included 32 men affected by leprosy and five healthy men as a control group. All patients were subjected to history-taking, dermatological and genital examinations, assessment of follicle-stimulating hormone (FSH), luteinizing hormone (LH), and testosterone, and testicular ultrasonography examination. Semen analysis was performed for the 10 patients who consented., Results: Testicular atrophy was observed in 93.75% of patients. Clinical manifestations of testicular atrophy were loss of libido (21.87%), female pubic hair pattern (9.38%), gynecomastia (6.25%), and secondary infertility (6.25%). Hormonal imbalance was seen in 16 patients, and all 10 patients who underwent semen analysis showed an abnormality., Conclusions: This study showed a high frequency of testicular atrophy, but the symptoms were only present in a few of patients. The assessment of testicular function should be recommended as a routine work-up for leprosy patients., (Copyright © 2019 The Authors. Published by Elsevier Ltd.. All rights reserved.)

Purpose of Review: Hypogonadism is a common endocrine dysfunction. This review focuses on the most up-to-date guideline for evaluation of pituitary function among men presenting with signs and symptoms of hypogonadism., Recent Findings: The clinician must differentiate between primary (testicular) and secondary (pituitary-hypothalamic or central) hypogonadisms and be aware of adult-onset hypogonadism. If gonadotropins are low or inappropriately normal, the clinician must consider potential reversible causes in the hypothalamus-pituitary axis. Also, it is critical to understand the pitfalls of testosterone testing. When clinically indicated, evaluation of other pituitary hormone functions as well as pituitary magnetic resonance imaging may be necessary. Furthermore, it is essential to recognize that pituitary incidentalomas are common. Patients with microprolactinoma are more likely to present with symptoms of sexual dysfunction while those with macroprolactinoma are more likely to present with symptoms of mass effect. Some functional pituitary tumors respond to drug therapy while other nonfunctional tumors require surgical intervention. It is important for the clinician to understand the proper work-up of the hypogonadal patient with pituitary dysfunction and when necessary to refer to an endocrinologist or a neurosurgeon.

Study Question: Are early signs of metabolic disorder in late adolescence associated with features of impaired testicular function many years before the majority seek parenthood?, Summary Answer: Adolescents with features of metabolic disorder at 17 years, or insulin resistance (IR) at 20 years of age, show impaired testicular function and altered hormone levels compared to those without metabolic disorder., What Is Known Already: Controversial evidence suggests a recent decline in sperm production potentially linked to environmental influences, but its cause remains unclear. Concomitant increases in obesity and diabetes suggest that lifestyle factors may contribute to this decline in testicular function. Although obesity has been associated with adverse testicular function in some studies, it remains unclear whether poor testicular function merely reflects, or causes, poor metabolic health. If metabolic disorder were present in adolescence, prior to the onset of obesity, this may suggest that metabolic disorder maybe a precursor of impaired testicular function., Study Design, Size, Duration: The Western Australian Pregnancy Cohort (Raine) Study is a longitudinal study of children born in 1989-1991 who have undergone detailed physical assessments since birth (1454 male infants born). At 17 years of age, 490 boys underwent a hepatic ultrasound examination, serum cytokine assessment (n = 520) and a metabolic assessment (n = 544). A further metabolic assessment was performed at 20 years (n = 608). Testicular assessment was performed at 20 years; 609 had reproductive hormones measured, 404 underwent a testicular ultrasound and 365 produced a semen sample., Participants/materials, Setting, Methods: Testicular volume was estimated by ultrasonography, and semen analysis was performed according to World Health Organization guidelines. Concentrations of LH, FSH and inhibin B (inhB) in serum were measured by immunoassay and total testosterone by liquid chromatography-mass spectrometry.At 17 years of age, a liver ultrasound examination was performed to determine the presence of non-alcoholic fatty liver disease (NAFLD), and serum analysed for the cytokines interleukin-18 and soluble tumour necrosis factor receptor 1 and 2 (sTNFR1, sTNFR2).At 17 and 20 years of age, fasting blood samples were analysed for serum liver enzymes, insulin, glucose, triglycerides (TG), total cholesterol, high density lipoprotein and low density lipoprotein cholesterol, high sensitivity C-reactive protein and uric acid. The homoeostatic model assessment (HOMA) was calculated and approximated IR was defined by a HOMA >4. Anthropometric data was collected and dual energy X-ray absorptiometry measurement performed for lean and total fat mass. As at this young age the prevalence of metabolic syndrome was expected to be low, a two-step cluster analysis was used using waist circumference, TGs, insulin, and systolic blood pressure to derive a distinct high-risk group with features consistent with the metabolic syndrome and increased cardiometabolic risk., Main Results and the Role of Chance: Men at age 17 years with increased cardiometabolic risk had lower concentrations of serum testosterone (medians: 4.0 versus 4.9 ng/mL) and inhB (193.2 versus 221.9 pg/mL) (P < 0.001 for both) compared to those within the low risk metabolic cluster. Men with ultrasound evidence of NAFLD (n = 45, 9.8%) had reduced total sperm output (medians: 68.0 versus 126.00 million, P = 0.044), testosterone (4.0 versus 4.7 ng/mL, P = 0.005) and inhB (209.1 versus 218.4 pg/mL, P = 0.032) compared to men without NAFLD.Men with higher concentrations of sTNFR1 at 17 years of age had a lower sperm output and serum concentration of inhB, with an increase in LH and FSH (all P < 0.05 after adjustment for age, BMI, abstinence and a history of cryptorchidism, varicocele, cigarette smoking, alcohol and drug use), compared to those without an elevated sTNFR1. Multivariable regression analysis, adjusting for confounders, demonstrated that men in the high-risk metabolic cluster at 20 years had a lower serum testosterone and inhB (P = 0.003 and P = 0.001, respectively). A HOMA-IR > 4 was associated with a lower serum testosterone (P = <0.001) and inhB (P = 0.010) and an increase in serum FSH (P = 0.015)., Limitations, Reasons for Caution: This study is limited by the sample size and multiple comparisons, and causality cannot be proven from an observational study. Due to a 3-year interval between some metabolic assessments and assessment of testicular function, we cannot exclude the introduction of a bias into the study, as some of the participants and their testicular function will not have been fully mature at the 17-year assessment., Wider Implications of the Findings: Irrespective of a proven causation, our study findings are important in that a significant minority of the men, prior to seeking parenthood, presented co-existent features of metabolic disorder and signs of testicular impairment. Of particular note is that the presence of NAFLD at 17 years of age, although only present in a minority of men, was associated with an almost 50% reduction in sperm output at 20 years of age, and that the presence of IR at 20 years was associated with a 20% reduction in testicular volume., Study Funding/competing Interest(s): This study was supported by Australian NHMRC (Grant Numbers 634457, 35351417 and 403981) and received support from the Raine Medical Research Foundation, The Telethon Kids Institute, University of Western Australia, Women and Infants Research Foundation, Curtin University and Edith Cowan University. D.A.D., J.E.D., N.M., L.A.A., R.-C.H., T.A.M., J.K.O., L.J.B. have nothing to declare. R.J.H. is Medical Director of Fertility Specialists of Western Australia, has equity interests in Western IVF, and has received grant support from MSD, Merck-Serono and Ferring Pharmaceuticals. RMcL has equity interests in the Monash IVF Group. R.J.N. has equity interests in FertilitySA, and has received grant support from Merck Serono and Ferring Pharmaceuticals. D.J.H. has received institutional grant funding (but no personal income) for investigator-initiated testosterone pharmacology studies from Lawley and Besins Healthcare and has provided expert testimony to anti-doping tribunals and for testosterone litigation.This abstract was awarded the Fertility Society of Australia clinical exchange award for the oral presentation at ESHRE, Barcelona, in 2018., (© The Author(s) 2018. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.)

The aim of this study was to evaluate the hypothalamic-pituitary-gonadal axis functionality on a bodybuilding competitioner before, during and after the use of anabolic-androgenic steroids. A young healthy man was followed up for 4 months. The subject reported his drug administration protocol through periodic interviews and performed laboratory tests to monitor the function of his hypothalamic-pituitary-gonadal axis. Time 1 (before the steroids use) shows all hormones levels (follicle-stimulating hormone = 4,2 mUI/ml, luteinising hormone = 3,7 mUI/ml and total testosterone = 5,7 ng/ml) within reference values. In Time 2, after 8 weeks on steroids abuse, a complete hypothalamic-pituitary-gonadal axis derangement is evident with noticeable negative feedback (follicle-stimulating hormone = 1,47 mUI/ml, luteinising hormone = 0,1 mUI/ml and total testosterone = 1,47 ng/ml). At the third moment (40 days after Time 2), we can see a tendency to recovery, however, the serum levels of the investigated hormones were still considerably lower than the baseline values. At the end, we could conclude that the use of anabolic-androgenic steroids, at supraphysiological dosages, even for a short time (8 weeks), causes severe disorder in the hypothalamic-pituitary-gonadal axis. The endogenous testosterone synthesis was severely compromised by important decline in serum luteinising hormone levels., (© 2018 Blackwell Verlag GmbH.)

Human immunodeficiency virus-infected man may require assisted reproductive technology not just for safer conception but also due to subfertility. The study investigated the effect of antiretroviral drugs on the fertility potentials of males and the possible protective role of Naringenin, using Sprague Dawley rats. Thirty adult male Sprague Dawley rats were grouped into-A: Distilled water; B: Highly Active Antiretroviral Therapy (HAART); C: Naringenin 40 mg/kg; D: Naringenin 80 mg/kg, E: HAART + Naringenin 40 mg/kg; F: HAART + Naringenin 80 mg/kg. The rats were euthanised after 10 weeks. Results showed a significant decrease in sperm count in group B when compared to the control and other groups. Spermatozoa with normal morphology also reduced significantly in the B group and progressive sperm motility reduced when compared to the control, D and the F group. The serum testosterone was not significantly different between groups A and B, however the groups C and D displayed significant increase when compared to groups A and B. The serum luteinising hormone was significantly higher in group B when compared to groups A, E and F. Our data suggest that Naringenin improves the male reproductive anatomy and function, therefore, it promises to be a beneficial adjuvant for mitigating HAART testicular and reproductive perturbations., (© 2018 Blackwell Verlag GmbH.)

Cerium oxide nanoparticles (CNPs) as an antioxidant have been used frequently to attenuate hyperglycaemia oxidative damage in different organs. We investigated the impact CNPs on the qualitative and quantitative sperm parameters, spermatogenesis and NFE2-related factor 2 (Nrf2) expression as a major contributor of antioxidant defence in the male diabetic rats. Twenty-four male rats were divided into four groups. Controls received only mouse food and water. Second group were treated with CNPs (30 mg kg -1  day -1 ) for 2 weeks. Rats in third group received streptozotocin (STZ) (60 mg/kg). In fourth group, animals became diabetic and received CNPs (30 mg kg -1  day -1 ) for 2 weeks. The results showed a significant abnormality in the sperm parameters and histopathological patterns of testes in the diabetic group compared to the control group and CNPs treatment significantly improved all testicular parameters. Following CNPs administration, sperm DNA fragmentation significantly reduced in the STZ-treated rats. Moreover, after CNPs intake in the STZ-treated rats, Nfr2 expression levels increased significantly. Overall, CNPs administration on the diabetic rates can attenuate detrimental effects of diabetes on the sperm potential fertility, sperm parameters, DNA integrity and Nrf2 expression levels. This study gives a future prospect to determine the role of CNPs in the context of diabetes., (© 2018 Blackwell Verlag GmbH.)

Severe illness can lead to multiple transient endocrinopathies. In adult patients, neuroendocrine alterations include sick euthyroid syndrome, an increase in corticosteroid levels, increase in prolactin levels, decreased insulin growth factor 1 levels and hypogonadism. We report the case of a 24-year-old man with meningococcal sepsis with multiple end-organ complications who developed persistent non-autoimmune hypothyroidism, adrenal insufficiency and primary hypogonadism all requiring hormone replacement. While adrenal insufficiency as part of the Waterhouse-Friderichsen syndrome is well described, reports of primary hypothyroidism and persistent primary hypogonadism in severe illness are exceedingly rare. Multiple combined endocrinopathies as in this case have not been reported previously. This case highlights the necessity of screening for endocrine abnormalities in severe illness and the need for treatment if persistent. It also raises a novel concept of meningococcal sepsis causing multiple endocrinopathies possibly via disseminated intravascular coagulopathy-related ischaemic damage., Competing Interests: Competing interests: None declared., (© BMJ Publishing Group Limited 2018. No commercial re-use. See rights and permissions. Published by BMJ.)

This study was designed to determine the effects of daily oral administration (250 mg/kg) of the hydroalcoholic extract of Fumaria parviflora (FP) for 14 days on the sperm parameters, oxidative stress parameters, serum testosterone levels, expression of Bax and Bcl-2 genes, and apoptosis index of germ cells after testicular torsion-detorsion (ischaemia-reperfusion, IR) injury model in rats. Twenty-eight adult male Wistar rats were divided randomly into four groups of seven each: sham operation, torsion-detorsion (TD), TD plus the hydroalcoholic extract FP (TDFP) and only FP without TD application (FP). Testicular torsion was created by rotating the left testis 720° in a counterclockwise direction; then, after 4 hr, detorsion was performed. The Johnson's score, mean seminiferous tubule diameter (MSTD) and height (thickness) of seminiferous tubule epithelium (HST) were significantly increased in TDFP and FP groups as compared to TD group. The gene expression of Bcl-2, level of serum testosterone hormone and antioxidant parameters-GPx and SOD-were significantly higher in TDFP and FP groups than TD group. The index of apoptosis, the gene expression of Bax and the level of MDA were significantly higher in TD group than TDFP and FP groups. Therefore, F. parviflora could decrease oxidative stress induced by testicular torsion-detorsion., (© 2018 Blackwell Verlag GmbH.)

The persistent inflammation and oxidative stress at the local site in ulcerative colitis reportedly extend to the testes via systemic circulation resulting in testicular dysfunction. The influence of 6-gingerol (6G), a phenolic compound isolated from Zingiber officinale, on colitis-mediated testicular dysfunction in mice was investigated in this study. Chronic ulcerative colitis was induced in mice using 2.5% dextran sulfate sodium (DSS) in drinking water for three cycles. Each cycle consisted of 7 consecutive days of exposure to DSS-treated water followed by 14 consecutive days of normal drinking water. 6G (100 mg/kg) or sulfasalazine (SZ; 100 mg/kg) was orally administered alone or in combination with DSS-treated water during the three cycles. SZ served as standard reference drug for colitis in this study. 6G significantly prevented the incidence of rectal bleeding, decrease in the body weight gain and colon mass index in DSS-exposed mice. 6G significantly prevented colitis-mediated decreases in luteinizing hormone, follicle-stimulating hormone and testosterone and decreases oxidative stress indices, pro-inflammatory cytokines and caspase-3 activity with concomitant augmentation of antioxidant enzymes activities, sperm characteristics, marker enzymes of testicular function and histoarchitecture in DSS-exposed mice. 6G exerted protective influence against ulcerative colitis-induced testicular damage via mechanisms involving its antioxidant and anti-inflammatory properties.

The present study was aimed to examine the effects of 3-week zinc and melatonin administration on testicular tissue injury and serum Inhibin-B levels caused by unilateral testicular torsion-detorsion in rats. The study was performed on 60 Wistar Albino-type adult male rats. The animals were allocated to 6 groups in equal numbers. 1. Control; 2. Sham; 3. Ischemia-reperfusion; 4. Zinc + ischemia-reperfusion; 5. Melatonin + ischemia-reperfusion; 6. Zinc + melatonin + ischemia-reperfusion. Zinc and melatonin were administered before ischemia-reperfusion at doses of 5 and 3 mg/kg respectively, by intraperitoneal route for a period of 3 weeks. Testicular torsion-detorsion procedures consisted of ischemia for 1 h and then reperfusion for another hour of the left testis. Blood and testicular tissue samples were collected to analyze erythrocyte and tissue GSH and plasma and tissue MDA, Inhibin-B levels. The highest erythrocyte and testis GSH values were found in zinc, melatonin, and zinc + melatonin groups (p < 0.001). Torsion-detorsion group has significantly lower erythrocyte GSH levels and higher plasma MDA values (p < 0.001). Serum inhibin-B and spermatogenic activity levels in the torsion-detorsion group were also significantly lower than those in the other groups (p < 0.001). However, zinc-, melatonin-, and melatonin + zinc-supplemented groups have higher inhibin-B and spermatogenetic activity (p < 0.001). The results of the study show that zinc, melatonin, and melatonin + zinc administration partially restores the increased oxidative stress, as well as the reduced inhibin-B and spermatogenic activity levels in testes ischemia-reperfusion in rats. Suppressed inhibin-B levels in the testicular tissue may be a marker of oxidative stress.

Objective: Testicular dysgenesis syndrome (TDS) comprises testicular germ cell cancer, cryptorchidism and some cases of male infertility and hypospadias, which can be linked to impairment of intrauterine gonadal development. Among histological signs of TDS, large Leydig cell (LC) clusters (micronodules) are frequently present. This study aimed to investigate possible associations of LC micronodules with the presence of Reinke crystals and hormonal function of LCs, the latter primarily reflected by serum concentrations of luteinising hormone (LH) and testosterone, in patients with TDS., Design: A retrospective study of 101 andrological patients with TDS (infertility with and without a history of cryptorchidism or presence of germ cell neoplasia in situ) and 20 controls with normal testis histology and LC-function. Archived testicular biopsies were re-evaluated for the presence of LC micronodules and Reinke crystals and the findings were correlated with testis size and serum concentrations of LH, follicle-stimulating hormone (FSH), testosterone, inhibin B, estradiol and sex hormone binding globulin (SHBG)., Results: TDS patients with bilateral LC micronodules had significantly lower concentrations of LH, FSH and inhibin B, a lower testosterone/LH-ratio and smaller testis sizes compared to TDS-patients lacking this feature. Presence of LC micronodules was correlated with a lower number of Reinke crystals, while cryptorchid testes had a significantly higher number of crystals than normally descended TDS testes., Conclusion: LC micronodules appear to be a compensatory mechanism caused by androgenic failure and are presumably driven by high concentrations of LH. A relative paucity of Reinke crystals in LCs within micronodules in normally descended TDS testes may be a feature of recently renewed immature Leydig cells. The increased number of Reinke crystals in LCs in testes that were either undescended at birth or are persistently undescended could indicate an impairment of LC renewal in cryptorchidism.

Context: The G protein-coupled receptor GPRC6A is an emerging effector with multiple endocrine roles, including stimulation of T production from the testis. Recently, two men with an inactivating mutation (F464Y) of GPRC6A have been identified, and they showed primary testicular failure and deranged spermatogenesis. Furthermore, one of them also reported cryptorchidism at birth. In addition, a polymorphism (rs2274911, Pro91Ser) in GPRC6A is associated with prostate cancer, a typical androgen-sensitive cancer., Objective: To study the possible association between rs2274911 polymorphism and male fertility and/or cryptorchidism. Design, Patients, Settings: A total of 611 subjects, including 343 infertile patients, 197 normozoospermic controls, and 71 cryptorchid newborns, were retrospectively selected., Methods: Sequencing analysis for rs2274911 polymorphism and F464Y mutation, and serum levels of FSH, LH, and T were assessed. In vitro functional studies for rs2274911 and F464Y were also performed., Results: Homozygous subjects for the risk allele A of rs2274911 had a 4.60-fold increased risk of oligozoospermia and 3.52-fold increased risk of cryptorchidism. A significant trend for increased levels of LH in the GA and AA genotypes, compared with GG homozygotes, was detected in men with azoospermia/cryptozoospermia (P for trend = .027), further supporting an association with primary testicular failure. The mutation F464Y was found in one cryptorchid child (one in 71; 1.41%). Functional studies showed that the A allele of rs2274911 and the F464Y substitution were associated with lower exposition of the receptor on the cell membrane and a reduced downstream phosphorylation of ERK1/2 with respect to wild type., Conclusion: Our results suggest that GPRC6A inactivation or sub-function contributes to reduced exposure to androgens, leading to cryptorchidism during fetal life and/or low sperm production in adulthood.

The dose-response characterization of endocrine mediated toxicity is an on-going debate which is controversial when exploring the nature of the dose-response curve and the effect at the low-end of the curve. To contribute to this debate we have assessed the effects of a wide range of dose levels of the antiandrogen flutamide (FLU) on 7-week male Wistar rats. FLU was administered by oral gavage at doses of 0, 0.001, 0.01, 0.1, 1 and 10mg/kg/day for 28 days. To evaluate the reproducibility, the study was performed 3 times. The molecular initiating event (MIE; AR antagonism), the key events (LH increase, Leydig cell proliferation and hyperplasia increases) and associated events involved in the mode of action (MOA) of FLU induced testicular toxicity were characterized to address the dose response concordance. Results showed no effects at low doses (<0.1mg/kg/day) for the different key events studied. The histopathological changes (Leydig cell hyperplasia) observed at 1 and 10mg/kg/day were associated with an increase in steroidogenesis gene expression in the testis from 1mg/kg/day, as well as an increase in testosterone blood level at 10mg/kg/day. Each key event dose-response was in good concordance with the MOA of FLU on the testis. From the available results, only monotonic dose-response curves were observed for the MIE, the key events, associated events and in effects observed in other sex related tissues. All the results, so far, show that the reference endocrine disruptor FLU induces threshold effects in a standard 28-day toxicity study on adult male rats., (Copyright © 2015 Elsevier Inc. All rights reserved.)

Isoniazid is reported to be the most reliable and cost-effective remedy for tuberculosis treatment and prophylaxis among first line anti-tuberculosis drugs. Conventionally, the most common and best studied adverse effect of isoniazid is hepatotoxicity, but as for testicular toxicity the problem has not yet explored extensively. The aim of the study was to identify in vivo influence of isoniazid on induction of testicular cytochrome Р-450 2Е1 (CYP2E1) mRNA expression and enzymatic activity, testes DNA fragmentation, serum total testosterone level, and spermatogenesis indices. The significant induction of CYP2E1 was demonstrated in rat's testes following isoniazid administration, specifically CYP2E1 mRNA expression and p-nitrophenolhydroxylase activity was increased in 28 and 7 times as compared with control, respectively. These changes were accompanied by activating of testicular GST in 32%, changing in levels and character of DNA fragmentation, as well as damaging of the spermatogenic epithelium, decreasing in serum testosterone content (1.62 fold), sperm count (19%), and losing of fertility in comparison with untreated males. We assume that in testes of isoniazid-treated rats CYP2E1 may act as a trigger in generating of reactive oxygen species and other toxic metabolites which subsequently mediates DNA damage, spermatogenesis disturbances, and altered male fertilizing capacity., (Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.)

Procarbazine (P) is an effective chemotherapeutic drug especially used in lymphoma treatment; however testicular toxicity is a limiting factor. Various ways of treatment were tried to preserve testicular function including hormonal treatment, antioxidant treatment, and sperm cryopreservation but resulted with low rates of satisfaction. Procarbazine is a well known agent causing sterility even in the first doses of chemotherapy. Antioxidants such as N acetylcysteine and ascorbate have been used for protective purposes and were very successful. Melatonin (M) is another powerful antioxidant and we aimed to use M for the protection of P induced testicular toxicity in this study. Procarbazine was given peroral by gavage once a week at a dose of 62.5 mg/kg/week for 4 weeks (total dose: 250 mg/kg) (P group) and in procarbazine + melatonin (PM) group, 10 mg/kg melatonin was intraperitoneally administered daily for five days a week for 4 weeks (total 20 days). The experiment ended at day 90. In the P and PM groups the testicle width, length, and weight, sperm A and sperm AB properties (Sperm A: sperms straight line progressive, Sperm B: sperms straight slow progressive, Sperm AB: Sperm A + Sperm B), spermatogonia, Sertoli cells, seminiferous tubule, and germinative layer thickness were lowered as compared with the control group. However, there were no significant differences between the P and PM groups in regard to these parameters. Melatonin preserved Sertoli cell and spermatogonia function. The testosterone and follicle-stimulating hormone (FSH) levels were also preserved. Melatonin significantly decreased malondialdehyde (MDA) levels and preserved the antioxidant enzyme levels such as glutathione peroxidase (GPx) and nitrite nitrate (NO2-/NO3-). Melatonin may protect testicular functions in P treated patients and is open to consideration during chemotherapy since it appears to be without any side effects.

Foetal exposure to phthalates is known to adversely impact male reproductive development and function. Developmental anomalies of reproductive tract have been attributed to impaired testosterone synthesis. However, species differences in the ability to produce testosterone have been noted; e.g., following foetal exposure, abnormal clustering of Leydig cells or decreased production of testosterone that is manifested in rats does not occur in mice or humans. Nonetheless, other facets of testicular dysgenesis occur in both rats and mice as well as in some other species tested. We recently published a comprehensive evaluation of the foetal rat testis proteome, following in utero exposure to diethylhexyl phthalate (DEHP), which revealed changes in individual proteins that are known to be factors in cellular differentiation and migration or related to the capacity of the foetal Leydig cell to produce testosterone and fit a pathway network in which each is regulated directly or indirectly by oestradiol. Plasma oestradiol indeed was found to be elevated approximately twofold in 19-day-old DEHP-exposed foetal male rats. In this brief review, we discuss our new findings vis-à-vis 'oestrogen hypothesis' as a cause for testicular dysgenesis syndrome.

Objective: To investigate the effects of an antioxidant cocktail (AC) on bleomycin, etoposide, and cisplatin (BEP)-induced testicular dysfunction., Design: In vivo study., Setting: Research laboratory., Animal(s): Adult male and female Sprague-Dawley rats., Intervention(s): The rats were treated with three cycles of 21 days each of therapeutically relevant dose levels of BEP (0.75, 7.5, and 1.5 mg/kg) with or without the AC (a mixture of α-tocopherol, L-ascorbic acid, Zn, and Se)., Main Outcome Measure(s): Sperm parameters, fertility, serum hormone levels (ELISA), testicular histopathology, and expression of proliferating cell nuclear antigen (PCNA), and transferrin (Western blotting and immunohistochemistry) were evaluated at the end of treatment and a 63-day recovery period., Result(s): At the end of treatment, the AC improved BEP-induced decrease in sperm motility and increase in abnormality but had no effect on reduced sperm count, fertility, and tubular atrophy, although it up-regulated germ cell proliferation. The AC normalized reduced inhibin B levels, but had no effect on decreased transferrin and testosterone and elevated LH levels. At the end of the recovery period, the AC enhanced the expression of PCNA and transferrin, repopulation of germ cells, LH-testosterone axis, and fertility, but had no effect on reduced FSH and elevated inhibin B levels., Conclusion(s): The antioxidants protect and then enhance the recovery of testicular and reproductive endocrine functions when administered concomitantly with BEP therapy. The AC may be beneficial to regain testicular functions after chemotherapy., (Copyright © 2013 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.)

The LH receptor (LHR) is critical for steroidogenesis and gametogenesis. Its essential role is underscored by the developmental and reproductive abnormalities that occur due to genetic mutations identified in the human LHR. In males, activating mutations are associated with precocious puberty and Leydig cell hyperplasia. To generate a mouse model for the human disease, we have introduced an aspartic acid to glycine mutation in amino acid residue 582 (D582G) of the mouse LHR gene corresponding to the most common D578G mutation found in boys with familial male-limited precocious puberty (FMPP). In transfected cells, mouse D582G mLHR exhibited constitutive activity with a 23-fold increase in basal cAMP levels compared with the wild-type receptor. A temporal study of male mice from 7 days to 24 weeks indicated that the knock-in mice with the mutated receptor (KiLHR(D582G)) exhibited precocious puberty with elevated testosterone levels as early as 7 days of age and through adulthood. Leydig cell-specific genes encoding LHR and several steroidogenic enzymes were up-regulated in KiLHR(D582G) testis. Leydig cell hyperplasia was detected at all ages, whereas Sertoli and germ cell development appeared normal. A novel finding from our studies, not previously reported in the FMPP cases, is that extensive hyperplasia is commonly found around the periphery of the testis. We further demonstrate that the hyperplasia is due to premature proliferation and precocious differentiation of adult Leydig cells in the KiLHR(D582G) testis. The KiLHR(D582G) mice provide a mouse model for FMPP, and we suggest that it is a useful model for studying pathologies associated with altered LHR signaling.

Classification for fertility is based on two conditions, namely on evidence of an adverse effect on sexual function and fertility and that the effect is not secondary to other toxic effects. To decide on an adverse effect is a relatively simple day-to-day decision in toxicology but whether this effect is secondary often leads to serious controversy. As the seminiferous epithelium operates on the verge of hypoxia, oxygen deficit can lead to secondary impairment of testicular function. This is well known from healthy mountaineers exposing themselves to high altitude. They have reduced blood oxygen content that goes in parallel with impairment of testicular function and this effect remains for some time in spite of a compensatory polycythaemia. Similar findings are described for experimental animals exposed to hypobaric oxygen/high altitude. In addition, testicular function is affected in severe diseases in humans associated with systemic oxygen deficit like chronic obstructive pulmonary disease, sickle cell disease or beta-thalassaemia as well as in transgenic animals simulating haemolytic anaemia or sickle cell disease. The problem of insufficient oxygen supply as the underlying cause for testicular impairment has received relatively little attention in toxicology, mainly because blood oxygen content is generally not measured in these animal experiments. The difficulties associated with the decision whether testicular toxicity is primary or secondary to hypoxia are exemplified by the results of inhalation studies with nickel subsulphide and gallium arsenide (GaAs). Both of these particulate substances lead to severe lung toxicity that might impair oxygen uptake, but testicular toxicity is only observed with GaAs. This may first be explained by different effects on the blood: nickel subsulphide inhalation leads to a compensatory erythropoiesis that may mitigate pulmonary lack of oxygen uptake. In contrast, GaAs exposure is associated with microcytic haemolytic anaemia thereby aggravating any possible oxygen undersupply. Furthermore, the predominant pulmonary effect caused by GaAs (but not by nickel subsulphide) is alveolar proteinosis. Pulmonary alveolar proteinosis is also known as a severe disease in humans associated with hypoxaemia. Therefore, we conclude that the testicular effects observed after GaAs are secondary to hypoxaemia caused by the combination of pulmonary proteinosis and haemolytic anaemia. This publication tries to raise awareness to the severe consequences of hypoxaemia on testicular function that may already be caused by reduced oxygen pressure at high altitude without any chemical exposure.

The possible protective effect of captopril, an angiotensin-converting enzyme inhibitor, vs. telmisartan, an angiotensin II-receptor antagonist, was investigated in rats with testicular injury induced by a single i.p. injection of cadmium chloride (2 mg/kg). Captopril (60 mg/kg/day, p.o.) and telmisartan (10 mg/kg/day, p.o.) were given for five consecutive days, starting 3 days before cadmium administration. Both agents significantly increased serum testosterone level, which was reduced by cadmium, suppressed lipid peroxidation, restored the depleted reduced glutathione, decreased the elevations of nitric oxide, tumor necrosis factor-α, and cadmium ion levels, and attenuated the reductions of selenium and zinc ions in testicular tissue resulted from cadmium administration. Immunohistochemical analysis revealed that both captopril and telmisartan significantly reduced the cadmium-induced expression of inducible nitric oxide synthase, nuclear factor-κB, Fas ligand, and caspase-3 in testicular tissue. The differences between the results obtained with captopril and telmisartan were insignificant, suggesting that both drugs equally protected the testicular tissue from the detrimental effects of cadmium., (© 2011 The Authors Fundamental and Clinical Pharmacology © 2011 Société Française de Pharmacologie et de Thérapeutique.)

Background: Laparoscopic inguinal hernia repair is still not the gold standard for patients with inguinal hernia. The aim of this study was to compare testicular dysfunction, incidence and factors influencing chronic groin pain, and quality of life after laparoscopic and open mesh repair., Methods: One hundred twenty patients were studied in a prospective randomized trial. One hundred seventeen patients completed the required follow-up, 60 following laparoscopic repair and 57 following open repair. Testicular functions were assessed by testicular volume, blood flow, and hormones, and quality of life was assessed with Short Form 36 version 2 preoperatively and postoperatively at 3 months. Pain was assessed at different time intervals preoperatively and postoperatively., Results: Preoperative profiles of both groups were well matched. A significant decrease in testicular volume (p = 0.01) and less improvement in blood flow (p = 0.048) was seen after open repair. There was also a significant reduction in serum testosterone level (p = 0.02) with a significant increase in FSH and LH level (p < 0.001); however, there was no testicular atrophy. Incidence and severity of chronic groin pain were significantly less after laparoscopic repair during normal and strenuous activities, though they were similar to those after open repair during rest after 3 months postoperatively. Age, preoperative pain, pain at 1 week, and open repair were found to be independent risk factors for chronic pain on multivariate analysis. Quality of life was significantly better postoperatively in terms of physical functions, role physical, bodily pain, and general health after laparoscopic repair., Conclusion: Laparoscopic repair seems favorable in terms of better preservation of testicular functions, lower incidence of acute and chronic groin pain, and significant improvement in quality of life when compared to open repair. Younger age, preoperative pain, pain after 1 week postoperatively, and open mesh repair were found to be significant risk factors for chronic groin pain.

Lead poisoning is a worldwide health problem, and its treatment is under investigation. The aim of this study was to access the efficacy of Coriandrum sativum (coriander) in reducing lead-induced changes in mice testis. Animal exposed to lead nitrate showed significant decrease in testicular SOD, CAT, GSH, total protein, and tissue lead level. This was accompanied by simultaneous increase in the activities of LPO, AST, ALT, ACP, ALP, and cholesterol level. Serum testosterone level and sperm density were suppressed in lead-treated group compared with the control. These influences of lead were prevented by concurrent daily administration of C. sativum extracts to some extent. Treating albino mice with lead-induced various histological changes in the testis and treatment with coriander led to an improvement in the histological testis picture. The results thus led us to conclude that administration of C. sativum significantly protects against lead-induced oxidative stress. Further work need to be done to isolate and purify the active principle involved in the antioxidant activity of this plant.

Objective: To evaluate the effect of recombinant human follicle-stimulating hormone (FSH) plus human chorionic gonadotropin (hCG) on seminal parameters and pregnancy rate in severe testiculopathies after high FSH plasma concentrations have been suppressed., Design: Prospective, controlled, randomized clinical study., Setting: Infertility center at a university hospital., Patient(s): Eighty-seven men affected by severe testiculopathy., Intervention(s): We treated 57 men with a gonadotropin-releasing hormone agonist (GnRH-a) and then with recombinant human FSH and hCG, and 30 patients did not receive any treatment. Seminal parameters and sperm aneuploidies were evaluated during and after the treatment period. Couples did not achieve a spontaneous pregnancy received assisted reproduction treatment., Main Outcome Measure(s): Seminal parameters, sperm aneuploidies, testicular cytologic analysis, FSH, luteinizing hormone, testosterone, inhibin B concentrations, and pregnancy rate., Result(s): After the therapy period, the treated group showed statistically significant improvement in sperm parameters and sperm aneuploidies. No changes were observed in the untreated group. A trend toward an increase in pregnancy rate also was observed among treated couples (cumulative pregnancy rates 31.6% treated vs. 20.0% untreated), although the increase was not statistically significant. The improvement of seminal parameters in the treated group allowed some patients to undergo in vitro fertilization-embryo transfer instead of intracytoplasmic sperm injection., Conclusion(s): Results from this controlled, randomized clinical trial show that FSH therapy improves sperm parameters in severe male factor infertility when endogenous high FSH plasma levels are suppressed. In cases of severely impaired testicles, a rational treatment of male infertility is mandatory to improve the outcome of assisted reproduction techniques.

Purpose: This study aimed at comparing gonadal toxicity of ifosfamide versus cyclophosphamide received during childhood., Methods: The evaluation was based on basal FSH measurement. LH and testosterone were also measured in most of the patients. One hundred patients had received ifosfamide and 59 had received cyclophosphamide., Results: Median age at treatment was 11.2 years. The median interval since treatment was 10.7 years (range 4.1-20.2) and median age at evaluation was 21.4 years (17.5-36.1). The median dose of ifosfamide and of cyclophosphamide was 54 g/m(2) (18-114) and 8.3 g/m(2) (4.6-22), respectively. All but two males had normal testosterone levels. FSH was abnormal in 28/59 patients (47.5%) after receiving cyclophosphamide and was within the normal range in 94/100 patients (94%) after receiving ifosfamide., Conclusions: These results show that ifosfamide is associated with a lower risk of gonadal damage than cyclophosphamide. The risk of abnormal FSH increased with the cumulative dose of cyclophosphamide.

Untimely bilateral testicular enlargement greater than 3 ml is suggestive of precocious puberty, in which an underlying organic disease is more common in boys than in girls. We describe a 7 1/2 year-old boy presenting with testicular enlargement due to testicular microlithiasis. Following hormonal tests, diagnosis was based on ultrasonographic findings. Three years follow-up of the patient revealed normal pubertal progress and no malignant evolution. Testicular microlithiasis is a rare cause of testicular enlargement and pediatricians should take this disease into account in the differential diagnosis of suspected precocious puberty.

Single injection of streptozotocin (STZ) resulted diabetes mellitus which was reflected here by the levels of fasting blood glucose and serum insulin. Moreover, this experimental diabetes also resulted testicular dysfunctions evaluated by count, viability and motility of sperm as well as by the activities of key enzymes for androgen synthesis. Diabetes induced testicular oxidative stress has been indicated here by the monitoring of testicular peroxidase and catalase activities as well as by quantification of TBARS and CD of testis. Testicular glucose was increased and leydig cell nuclear area was decreased in STZ induced diabetes. Treatment of herbal formulated drug named as MTEC consist of aqueous-methanol extract of Musa paradisiaca, Tamarindus indica, Eugenia jambolana and Coccinia indica to streptozotocin induced diabetic rat at the ratio of 2:2:1:1 at the dose of 60 mg/d for two times a day for 14 d resulted a significant protection in fasting blood glucose and serum insulin levels (p<0.05) along with correction of testicular above parameters towards the control level (p<0.05). This herbal formulated drug has no general toxic effects on the body weight, as well as on the activities of serum glutamate and pyruvate transaminases in serum. The results support the validity of this herbal drug for the management of testicular disorders noted in diabetic state.

The objective of this study was to estimate the prevalence of and risk factors for pathological conditions of the reproductive organs in stray dogs under tropical conditions. Three hundred and eighteen dogs were examined post-mortem in the period from 1 July 2002 to 30 June 2003. Before killing, a blood sample (from the cephalic vein) for testosterone assay was taken. Pathological conditions of the reproductive organs were found in 135 of the dogs (42.5%) and in 175 of the testes (64.8%). The most frequent pathologies found were testicular degeneration, cryptorchidism, testicular hypoplasia and testicular tumours (in 15.1%, 6.6%, 6.6% and 5.4% of the dogs and 15.1, 4.6, 6.0 and 3.5 of the testes, respectively). Transmissible venereal tumour (TVT) was seen in 5.4% of the dogs. Testicular degeneration was more common in old dogs and underweight dogs (p < 0.05). Testicular tumours were 14.3 times more common in cryptorchid dogs. Age was another important factor for the development of testicular tumours (p < 0.05). Lower levels of testosterone concentration (p < 0.05) were observed in dogs with advanced testicular degeneration (0.7 +/- 0.8 nM), dogs with hypoplastic testicles (0.8 +/- 0.9 nM) and dogs with one degenerated and one retained testis or with bilateral cryptorchidism (1.2 +/- 0.9 nM) compared to dogs with one or two normal testes (7.0 +/- 5.5 nM). Testicular volume and weight were significantly lower in degenerated, hypoplastic and retained testes compared with the contralateral normal testis. Some spermatogenic activity was found in three of the retained testes, producing oligozoospermic smears with a high percentage of sperm abnormalities. No comparable epidemiological data about male pathological conditions of the reproductive organs in the dog is available. The prevalence found in this study, yet, appears high.

Objective: To investigate whether the gonadotrophin-releasing hormone (GnRH) test is an adequate diagnostic tool to identify testicular dysfunction in men with strictly unilateral varicocele and defined testicular volume; and to identify any peripheral venous variable which would predict the result of the GnRH test., Patients and Methods: In all, 102 GnRH tests were done in men with a left-sided varicocele. Follicle-stimulating hormone (FSH) and luteinizing hormone (LH) levels were determined. After intravenous administration of 100 microg GnRH, stimulated LH and FSH levels were measured. FSH levels of >8.2 U/L and LH levels of >51.7 U/L were considered exaggerated., Results: In all, 50 men had an exaggerated GnRH test result; all had an exaggerated FSH response and six also had an elevated LH response. The baseline FSH levels were higher (P < 0.001) and the testicular volume was smaller (P < 0.01) in men with an exaggerated GnRH test response. All men with a baseline FSH level of >5.6 U/L had an exaggerated GnRH test response., Conclusion: A baseline FSH level of >5.6 U/L is a good predictor of the GnRH test outcome. Leydig cell function seems mainly undisturbed.

Insulin-like factor 3 (INSL3) serum levels were measured in 135 andrologically well-characterized normal men and 85 patients with testicular disorders to investigate how the hormone, which is a major secretory product of human Leydig cells, is related to testosterone (T), LH, and semen quality. INSL3 was measured by using a newly developed fluorescence immunoassay. Median (2.5-97.5 percentiles) INSL3 serum levels were as follows: normal men (n = 135), 0.99 (0.55-1.73) ng/ml; infertile men (n = 23), 1.11 (0.60-2.07) ng/ml; anorchid men (n = 21), nondetectable (ND); patients with 47, XXY, Klinefelter syndrome (n = 21), 0.12 (ND-0.78) ng/ml; men with hypogonadotropic hypogonadism and T substitution (n = 11), ND; and men with hypogonadotropic hypogonadism and human chorionic gonadotropin (hCG) treatment (n = 5), 0.36 (0.13-0.73) ng/ml. Before testicular biopsy, two infertile men had blood samples drawn directly from vena spermatica. Here, the serum INSL3 levels were 15-fold higher than in serum from peripheral blood samples (13.84 and 14.00 ng/ml, respectively). In two unilaterally orchiectomized former testis cancer patients, who underwent hCG stimulation test, INSL3 serum levels were unchanged 72 and 96 h after hCG stimulation. In conclusion, we provide a normal range for INSL3 serum levels in adult men and show that the majority, if not all, circulating INSL3 derives from the testes. Furthermore, our data strongly indicate that INSL3 secretion is dependent on the differentiating effect of LH on Leydig cells but independent of the steroidogenic LH-mediated action. Thus, even though T and INSL3 are both dependent on LH, these two Leydig cell hormones are regulated differently.

Objective: To report improvement of azoospermia and hypogonadism after high-dose corticosteroid therapy in a patient with testicular sarcoidosis., Design: Case report., Setting: University hospital., Patient(s): A 27-year-old man with testicular sarcoidosis and azoospermia., Intervention(s): High-dose corticosteroid therapy was commenced in an attempt to improve sperm count and restore gonadal function., Main Outcome Measure(s): Analysis of sperm count, T, and gonadotropin response to steroid therapy., Result(s): FSH and LH concentrations decreased and T levels increased in parallel with control of disease activity with steroid therapy. Repeat semen analysis demonstrated a significant increase in sperm count, allowing sperm banking to take place., Conclusion(s): High-dose corticosteroid therapy may be indicated in testicular sarcoidosis, not only for control of systemic disease activity but also for recovery of gonadal function and spermatogenesis.

Insulin-like factor 3 (INSL3) is a member of the relaxin-insulin family, and it is expressed in pre- and postnatal Leydig cells of the testis. This peptide affects testicular descent during embryonic development, and mutations in INSL3 gene or its receptor LGR8 (leucine-rich repeat-containing G protein-coupled receptor 8)/GREAT (G protein-coupled receptor affecting testicular descent) cause cryptorchidism in humans. The expression of LGR8/GREAT in different tissues and the production of INSL3 also by adult-type Leydig cells suggest additional roles of this hormonal system in adulthood. In this preliminary report we performed the first analysis in humans of INSL3 using a novel RIA kit to measure INSL3 concentrations in serum of normal men and with different testicular pathologies. The results show that INSL3 is circulating in adult men, and it is almost exclusively of testicular origin. Subjects with severe testicular damage, such as men with severe infertility, produce low amount of INSL3, and the concentrations of this hormone seem to reflect the functional status of the Leydig cells. In particular, INSL3 concentrations may be an even more sensitive marker of Leydig cell function than testosterone itself. Analysis of men treated with different combinations of hormones of the hypothalamus-pituitary-testis axis suggests that the production of INSL3 is related to LH in a manner similar to that of the LH-testosterone axis.

To clarify the mechanisms underlying the testicular toxicity of oxfendazole (OX), adult Wistar rats were orally administered a dose of 100 mg/kg/day for 3, 7, or 14 days. Assays of sex-related hormones showed a significant decrease in only the estradiol serum level at days 3 and 7, as compared with the control group. Histopathologically, marked degeneration of meiotic spermatocytes was observed in stage XIV-I seminiferous tubules from day 3 onwards, and these spermatocytes gave positive results on terminal deoxynucleotidyl transferase (TdT)-mediated dUTP nick end-labeling (TUNEL). Abnormalities of spermiogenesis such as megakaryospermatids and binucleated spermatids were also observed in the testes of OX-treated rats. Under the electron microscope, lipid accumulation and dilatation of the endoplasmic reticulum were frequently found in the cytoplasm of the Sertoli cells on day 3. These results strongly suggest that OX induces both apoptosis of meiotic spermatocytes, most probably due to disruption of the microtubules, and degeneration of the Sertoli cells, characterized by distended endoplasmic reticulum and prominent cytosolic lipid accumulation.

Testicular atrophy is a sequela of inguinal hernioplasty. The purpose of this study was to evaluate the effects of Lichtenstein (LHR) and laparoscopic totally extraperitoneal (TEP) hernia repair techniques on testicular function and volume. This study is a randomized prospective clinical trial with the blind assessment of outcome. A total of 26 patients who underwent elective herniorrhaphy for groin hernia were included in the study. Each patient was randomly assigned into one of two groups: either TEP or LHR (n = 13 for each). Six of the patients had bilateral hernia (n = 3 for each group). Luteinizing hormone (LH), follicle stimulating hormone (FSH), testosterone levels, and testicular volume by Doppler ultrasonography were detected just before and 3 months after the operation. LH, FSH levels did not change, when compared preoperative and postoperatively in both groups. Testicular volume and testosterone levels were observed to be significantly decreased after TEP when compared with LHR while no significant preoperative changes were observed between those groups. This affected the testicular volume in normal limits. TEP or LHR could not affect LH, FSH, testosterone values, but TEP could lead a decreasing effect on volume of testis in normal limits.

Testicular toxicity of nefiracetam (N-(2,6-dimethylphenyl)-2-(2-oxo-1-pyrrolidinyl) acetamide), a neurotransmission enhancer, was investigated in male Slc:SD rats. Nefiracetam was orally administered daily at 1500 mg/kg for 4 weeks, and the animals were killed sequentially during the course of administration to determine testicular histopathological changes and sperm head counts (SHC), and hormonal changes. Retention of step 19 spermatids, sporadic degeneration of pachytene spermatocytes and step 7 spermatids in the stage VII seminiferous tubules, and a decrease in SHC were seen as earliest changes after 1 week of administration. These changes gradually advanced up to atrophy of seminiferous tubules with multinucleated-giant-cell formation after 4-week administration. Serum and testicular testosterone levels were decreased, but recovered to the control levels within a day following a single administration, and the decreases were repeated after 1-week administration. These results suggest that nefiracetam-induced earliest changes could be caused by the decreased level of testicular testosterone.

Fischer-344 rats treated with 12,500 ppm (728 and 879 mg/kg/d for male and females, respectively) and B6C3F1 mice treated with 6,000 ppm (1,227 and 1,408 mg/kg/d, respectively) di(2-ethylhexyl)phthalate (DEHP) in the diet for 78 weeks were allowed to recover for an additional 26 weeks on control diet. Blood was analyzed at weeks 78 and 104 from 10 animals per sex per group; animals were sacrificed at weeks 79 and 105 for histopathologic examination. The results are compared with data from animals continuously exposed to these dietary levels for 104 weeks (10, 11). Body weights and food consumption were measured monthly. BUN, albumin, and globulin that were significantly different for rats exposed to DEHP throughout 104 weeks, were comparable to controls for the recovery group. Reversibility of chronic effects on erythrocyte count, hemoglobin, and hematocrit values was apparent only for female rats. Chronic exposure demonstrated effects on liver, kidney, and testes weights. All organ weight effects except for testes for the Recovery group of rats, and all organ weight effects for mice, were reversible. Pigmentation of Kupffer cells and renal tubules present in chronically treated rats were not observed for the Recovery group. Lesions in the testes and pituitary gland were not reversible in rats. This may be a reflection of the senescence of the hypothalamic-gonad axis in rats. Cessation of exposure for mice resulted in amelioration of effects in the kidneys, liver, and testes. The extent of reversibility suggests that many chronic effects may be associated with a metabolic phenomenon such as peroxisome proliferation, which also reverted to control levels after 26 weeks of recovery.

Problem: Antisperm antibodies induced in prepubertal boys with testicular failures were characterized by using four techniques of antibody detection. The reactivity of circulating antisperm antibodies in prepubertal boys and the reactivity of antibodies in sera samples of adult fertile and infertile males were compared against the same sperm antigenic pools (live or fixed spermatozoa, or sperm antigenic extracts)., Method of Study: The incidence of antisperm antibodies in sera samples of 69 prepubertal boys with testicular failures and 21 samples obtained from adult, male individuals was assessed by indirect immunobead binding test (IDIBT), flow cytometry measurement, enzyme-linked immunosorbent assay, and Western blotting. Immunoblot analysis was performed by using sperm extracts of glycosylated and deglycosylated solubilized membrane antigens., Results: Sera samples were studied in a group composed of healthy prepubertal boys (n = 7) and prepubertal boys with testicular failures (n = 69). Applied tests of antibody detection revealed striking differences in a group of boys with testicular pathology. With IDIBT, 7% of the sera samples were found positive, whereas with flow cytometry measurement, 48% of the sera samples were positive. Immunosorbent assay (fixed sperm) indicated 32% positive cases in the same group. The sera samples were found to be positive in 65% of immunoblotting reactions with glycosylated antigens and in 70% of immunoblotting reactions with deglycosylated antigens. All applied detection assays were clearly negative on sera samples from fertile, adult males. Western immunoblotting indicated an immunodominant antigenic determinant of 58 kDa., Conclusions: Tests of antibody detection with the use of live sperm (IDIBT and flow cytometry measurements) presented low sensitivity (8% and 48%, respectively) in a group of prepubertal boys. This observation underlines the difficulties in assigning the prospective prognosis of future fertility status in prepubertal boys with antisperm antibodies.

We report here that 85% of the patients with germ cell tumors (GCTs) produce antibodies directed against Env protein of human endogenous retroviruses. Individuals that received antitumor treatment showed a decrease with time in their antibody titers. Importantly, of the rare cases of non-GCT individuals with Env-antibodies (n= 15, 0.8%), none produced antibodies directed against the transmembrane domain (TM), whereas all tested Env-positive GCT patients (n= 49) generated such antibodies at high titers. TM is required for Env to be expressed at the cell surface. Thus, anti-TM antibodies constitute highly specific markers for GCT and may hint at a function of Env during tumorigenesis.

A review of the English literature revealed 43 cases of histologically proven intrascrotal sarcoidosis. Due to this relative rarity, the difficulty in diagnosis and concern of possible testicular malignancy, 35% of these patients have undergone unnecessary orchiectomy. We present 3 cases of intrascrotal sarcoidosis and propose a testicular-sparing strategy for the appropriate diagnosis and treatment of intrascrotal sarcoidosis.

Ankylosing spondylitis (AS) and spondylarthropathies (SAP), proposed immune diseases, present sexual preponderance: men are mostly affected. It is known that androgens are decreased in systemic immune disorders. We have investigated two aspects: gonadal--with 13 parameters, and entheso-osteoarthritic--with 10 parameters, by an original methodological semiquantitative analysis. All the parameters were divided into five degrees; each degree was pointed from 0 to 5, and the total and final scores were obtained. In this way differences and correlations could be performed between all 23 parameters. We have studied 30 SAP patients in inflammatory attack, 4 SAP patients out of the inflammatory attack and 16 control subjects; all were men and in fertile age. Between the gonadal status of SAP patients vs the control group there is a significant difference concerning: the degree of testosterone (1.81 vs 0.22, p < 0.005) and testes trophicity (1.5 vs 0.35, p < 0.01); marked differences have been recorded for integrative scores: total (12.18 vs 6.21, p < 0.02), final (1.07 vs 0.57, p < 0.01) and general degree score (1.7 vs 1.18, p < 0.01). Testosteronemia has been different, too: 7.38 vs 23.25 nmol/l, p < 0.01. Between SAP patients in and out of the inflammatory attack there are no significant differences. A significant positive correlation between gonadal axis status degree and entheso-osteoarthritic status degree has been obtained by Spearman rank test: r = 0.41, p < 0.05. Our new methodological analysis allows to change qualitative criteria in mathematical used quantitative data, for performing correlations between so different fields: rheumatological and endocrinological. SAP patients (in inflammatory attack, and out of the inflammatory attack) have a certain degree of hypogonadism, which does not represent a specific disease but suggests a specific spondylarthropathic background.