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https://www.readbyqxmd.com/read/30101577/the-achievement-of-boar-sperm-in-vitro-capacitation-is-related-to-an-increase-of-disrupted-disulphide-bonds-and-intracellular-reactive-oxygen-species-levels
#1
R P Betarelli, M Rocco, M Yeste, J M Fernández-Novell, A Placci, B Azevedo Pereira, M Castillo-Martín, E Estrada, A Peña, M G Zangeronimo, J E Rodríguez-Gil
The aim of this work was to determine the relationship of intracellular reactive oxygen species (ROS) and the disulphide bonds established between sperm proteins with the achievement of capacitation in boar spermatozoa. With this purpose, spermatozoa were incubated in a specifically designed in vitro capacitation medium (CM) in the presence or absence of reduced glutathione (GSH). Incubation of boar spermatozoa in CM for 4 h significantly (p < 0.05) increased free cysteine residues, which is a marker of disrupted disulphide bonds, and also intracellular ROS levels...
August 12, 2018: Andrology
https://www.readbyqxmd.com/read/30101547/comprehensive-insight-into-functional-interaction-between-gnb3-c825t-and-enos-t-786c-g894t-gene-polymorphisms-and-association-with-susceptibility-to-diabetic-erectile-dysfunction
#2
M R Ben Khedher, M Abid, K Jamoussi, M Hammami
BACKGROUND: No study has assessed the possible involvement of endothelial nitric oxide synthase (eNOS) T-786C and G894T and G-protein β3 subunit (GNB3) C825T polymorphisms with susceptibility to diabetic vasculogenic erectile dysfunction (VED) in North African subjects. OBJECTIVES: Our aim was to evaluate the interaction and association between these gene polymorphisms and this disorder. MATERIALS AND METHODS: A total of 164 type 2 diabetes patients with VED diagnosed with penile color Doppler ultrasonography and 148 age-matched healthy volunteers were genotyped for the rs1799983 (G894T) and rs2070744 (T-786C) of the eNOS gene and the rs5443 (C825T) of the GNB3 gene using the PCR-RFLP method...
August 12, 2018: Andrology
https://www.readbyqxmd.com/read/30094956/sperm-cryopreservation-of-transgender-individuals-trends-and-findings-in-the-past-decade
#3
K Li, D Rodriguez, J S Gabrielsen, G M Centola, C Tanrikut
OBJECTIVES: Awareness and acceptance of transgenderism have increased in the last two decades. There is limited literature regarding the incidence and semen characteristics of transwomen banking spermatozoa. We sought to assess the incidence of sperm cryopreservation of transgender individuals compared with the cisgender population in the last 10 years. Semen parameters were also compared between the two groups. MATERIALS AND METHODS: We performed a retrospective analysis of sperm cryopreservation performed at a single center from 2006 through 2016...
August 9, 2018: Andrology
https://www.readbyqxmd.com/read/30079463/the-impact-of-low-intensity-extracorporeal-shock-wave-therapy-on-testicular-function-in-adult-rats
#4
Z-J Zang, Q Liu, J Hu, J Feng, Y-Q Zhu, G Ma, M-H Jiang
BACKGROUND: Low-intensity extracorporeal shock wave therapy (Li-ESWT) has been introduced as a treatment for penile diseases. Its impact on testicular function during treatment remains unknown. OBJECTIVES: To clarify whether Li-ESWT impairs testicular function during the treatment of penile diseases by investigating the impact of Li-ESWT on testosterone synthesis and spermatogenesis in adult rats. MATERIALS AND METHODS: Twenty-four male Sprague-Dawley rats were equally divided into the following three groups: control group, 1...
August 5, 2018: Andrology
https://www.readbyqxmd.com/read/30076677/penile-lengthening-with-porcine-small-intestinal-submucosa-grafting-in-peyronie-s-disease-treatment-long-term-surgical-outcomes-patients-satisfaction-and-dissatisfaction-predictors
#5
A Morgado, M R Morgado, N Tomada
BACKGROUND: Peyronie's Disease (PD) is an acquired connective tissue disorder that often leads to penile curvature (PC) and sexual dysfunction. Penile lengthening procedures (PLP) with four-layered porcine small intestinal submucosa graft (Surgisis® ES; Cook) have been widely used in patients with severe PC when erectile function is preserved. However, complications such as erectile dysfunction (ED) may limit treatment satisfaction. OBJECTIVES: Focusing on patients perspective, our study aims to evaluate longterm patient-reported outcomes, satisfaction, and dissatisfaction predictors after PLP...
August 3, 2018: Andrology
https://www.readbyqxmd.com/read/30054974/among-seven-testis-specific-molecular-markers-spem1-appears-to-have-a-significant-clinical-value-for-prediction-of-sperm-retrieval-in-azoospermic-men
#6
M-S Hashemi, H Mozdarani, K Ghaedi, M H Nasr-Esfahani
BACKGROUND: To achieve sperm retrieval in azoospermic men, predicting the success rate seems to be necessary. OBJECTIVES: In the present study we aimed to assess expression of seven molecular markers [ESX1, DAZ, DAZL (pre-meiotic markers), ZMYND15, PRM1, TNP1, and SPEM1 (post-meiotic markers)] to predict the success of sperm retrieval. MATERIALS AND METHODS: In this study, 63 azoospermic men [16 OA (obstructive azoospermia) and 47 NOA (nonobstructive azoospermia)] undergoing testicular tissue microdissection (micro-TESE) for intracytoplasmic sperm injection (ICSI)...
July 27, 2018: Andrology
https://www.readbyqxmd.com/read/30043555/compartments-with-predominant-ephrin-b1-and-ephb2-b4-expression-are-present-alternately-along-the-excurrent-duct-system-in-the-adult-mouse-testis-and-epididymis
#7
M R Gofur, K Ogawa
BACKGROUND: Ephrin receptors (Eph) and ligands are membrane-bound cell-cell communication molecules that regulate the spatial organization of various tissues and organs by repulsive or adhesive signals arising from contact between Eph- and ephrin-bearing cells. However, the expression and functions of Eph receptors in the testis and epididymis are virtually unknown. OBJECTIVES: We aimed to investigate the expression of several EphB receptors and ephrin-B ligands in the testis and epididymis of adult mice...
July 25, 2018: Andrology
https://www.readbyqxmd.com/read/30019500/alcohol-intake-and-semen-variables-cross-sectional-analysis-of-a-prospective-cohort-study-of-men-referring-to-an-italian-fertility-clinic
#8
E Ricci, S Noli, S Ferrari, I La Vecchia, S Cipriani, V De Cosmi, E Somigliana, F Parazzini
BACKGROUND: The association between alcohol intake and male reproductive function is still controversial. In the frame of a prospective cohort study, designed to investigate the relation between life style and fertility, we performed a cross-sectional analysis of semen quality. METHODS: Men of subfertile couples, referring to an Italian Infertility Unit and eligible for assisted reproductive techniques (ARTs), were asked about their lifestyle: BMI, smoking, caffeine intake, occupational and leisure physical activity (PA) and alcohol intake in the last year before ART procedure...
July 18, 2018: Andrology
https://www.readbyqxmd.com/read/30019487/serotonin-transporter-5-httlpr-genotypes-and-trinucleotide-repeats-of-androgen-receptor-exert-a-combinatorial-effect-on-hormonal-milieu-in-patients-with-lifelong-premature-ejaculation
#9
H L Khan, S Bhatti, S Abbas, Y L Khan, R M M Gonzalez, M Aslamkhan, G R Gonzalez, H H Aydin
Premature ejaculation is one of the most common sexual disorders in men due to uncontrolled modulation of spinal reflexes controlled by cortico-limbic centers in the brain. In this study, we investigate the combinatorial effects of trinucleotide repeats of androgen receptor and allelic variants of the 5-HTTLPR gene on sex steroids, hypophyseal hormones, sexual performance, and premature ejaculation assessment parameters among evidence-based lifelong premature ejaculation subjects. A total of 271 outpatients (age 26...
July 17, 2018: Andrology
https://www.readbyqxmd.com/read/30009463/exosomes-derived-from-mesenchymal-stem-cells-exert-therapeutic-effect-in-a-rat-model-of-cavernous-nerves-injury
#10
M Li, H Lei, Y Xu, H Li, B Yang, C Yu, Y Yuan, D Fang, Z Xin, R Guan
Postradical prostatectomy erectile dysfunction (pRP-ED) is a major health issue. There has been a shortage of an effective treatment method until now. In this study, a total of 48 adult male Sprague-Dawley (SD) rats were randomly equally divided into four groups, including group 1-sham surgery with cavernous nerve exposure plus vehicle, group 2-bilateral cavernous nerve injury (BCNI) plus vehicle, group 3-BCNI plus adipose-derived mesenchymal stem cells (ADSCs)-derived exosomes (ADSC-Exo), and group 4-BCNI plus bone marrow-derived mesenchymal stem cell (BMSCs)-derived exosomes (BMSC-Exo)...
July 16, 2018: Andrology
https://www.readbyqxmd.com/read/30006962/the-association-of-sex-hormone-binding-globulin-with-mortality-is-mediated-by-age-and-testosterone-in-men-with-type-2-diabetes
#11
S Ramachandran, R C Strange, A A Fryer, F Saad, G I Hackett
BACKGROUND: Serum sex hormone-binding globulin levels have been associated with mortality in adult men with type 2 diabetes (T2DM). OBJECTIVES: To confirm the association of serum sex hormone-binding globulin with mortality and then determine whether this association is mediated by age and total testosterone concentration. MATERIALS AND METHODS: We studied 364 men (median age: 66 years) with T2DM over a median follow-up of 4.3 years using the Cox regression to study associations between sex hormone-binding globulin, age, total testosterone, and mortality...
July 13, 2018: Andrology
https://www.readbyqxmd.com/read/29993200/lower-birthweight-and-left-mixed-handedness-are-associated-with-intensified-age-related-sex-steroid-decline-in-men-findings-from-the-men-s-health-40-study
#12
S Hoppler, A Walther, P La Marca-Ghaemmaghami, U Ehlert
In males, age-related decline in free testosterone (T) and dehydroepiandrosterone (DHEA) by 2-3% per year has been reported. Estradiol (E2) and progesterone (P) seem to decrease as well, but to a lesser extent. Lower sex steroid levels in men have been related to physical and mental symptoms. Low birthweight and left-/mixed-handedness (L/MH) are indicators of an adverse fetal environment during pregnancy, and both have been linked to morbidity in later life. The aim of this study is to examine the relationship between lower birthweight as well as L/MH and age-related sex steroid decline...
July 11, 2018: Andrology
https://www.readbyqxmd.com/read/29984477/a-kinase-anchor-protein-4-precursor-pro-akap4-in-human-spermatozoa
#13
F Jumeau, J Sigala, F Dossou-Gbete, K Frimat, A L Barbotin, L Buée, H Béhal, N Sergeant, V Mitchell
BACKGROUND: A-kinase anchor protein 4 (AKAP4) and its precursor pro-AKAP4 are two major proteins in spermatozoa of rodents and mammals. Although researchers have characterized the AKAP4 expression in various species, the protein's expression in humans has not been described in detail. OBJECTIVES: The objective of this study was to characterize human pro-AKAP4 more precisely (notably the definition of its localization and expression levels in human spermatozoa and testes)...
July 8, 2018: Andrology
https://www.readbyqxmd.com/read/29981219/quantification-of-the-leydig-cell-compartment-in-testicular-biopsies-and-association-with-biochemical-leydig-cell-dysfunction-in-testicular-cancer-survivors
#14
M G Tarsitano, M Bandak, N Jørgensen, N E Skakkebaek, A Juul, A Lenzi, G Daugaard, E Rajpert-De Meyts
A simple histological method to evaluate the Leydig cell compartment is lacking. We aimed to establish such a method and to investigate if Leydig cell hyperplasia of the biopsy contralateral to the tumour-bearing testicle in patients with testicular germ cell cancer is associated with biochemical signs of Leydig cell dysfunction after long-term follow-up. A case group of 50 long-term testicular germ cell cancer survivors without human chorionic gonadotropin elevation, 10 testicular germ cell cancer patients with elevated human chorionic gonadotropin and 10 controls without testicular malignancy were included...
July 6, 2018: Andrology
https://www.readbyqxmd.com/read/29981212/association-between-leukocytospermia-and-semen-interleukin-6-and-tumor-necrosis-factor-alpha-in-infertile-men
#15
E M Eldamnhoury, G A Elatrash, H M Rashwan, A I El-Sakka
Seminal cytokines were previously reported to adversely affect process of spermatogenesis and ultimately induce poor semen quality. However, association between both IL-6 and TNF-α and leukocytospermia was not yet settled. The aim of this study was to evaluate the association between leukocytospermia and levels of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) in semen of infertile men. This cross-sectional study included 100 age-matched (≥18-45 years.) men. Participants were divided into four groups with 25 patients in each group: Group (A) - infertile patients with leukocytospermia and normal other semen parameters; Group (B) - infertile patients with leukocytospermia and abnormal semen parameters; Group (C) - infertile patients with oligospermia and/or asthenospermia and/or teratospermia but with no leukocytospermia; Group (D) - fertile patients with normal semen parameters and without leukocytospermia...
July 6, 2018: Andrology
https://www.readbyqxmd.com/read/29978951/a-global-view-of-the-pathophysiology-of-varicocele
#16
A M Hassanin, H H Ahmed, A N Kaddah
Varicocele is the most common abnormality identified in men being evaluated for subfertility. In this comprehensive review of the pathophysiology of varicocele, we will shed light on novel pathophysiological findings and their clinical implications that may direct future researches; we will shed light on the impact of transient scrotal hyperthermia and the roles of inflammation and differential protein expression and androgen expression in spermatozoa on inducing pathophysiological findings. Furthermore, we will clarify the linked processes contributing to the pathophysiology of varicocele and the impact of genetics on the induction of these processes...
July 6, 2018: Andrology
https://www.readbyqxmd.com/read/29968337/changes-in-penile-length-after-radical-prostatectomy-effect-of-neoadjuvant-androgen-deprivation-therapy
#17
Y Kadono, T Nohara, S Kawaguchi, J Sakamoto, T Makino, K Nakashima, M Iijima, K Shigehara, K Izumi, A Mizokami
Although reports have shown evidence for penile length (PL) shortening after radical prostatectomy (RP), the association between neoadjuvant androgen deprivation therapy (NADT) and PL after RP has yet to be determined. This study evaluates chronological changes in PL after NADT and RP. Stretched PLs (SPLs) of 143 patients, 41 of whom had undergone NADT, were measured before, 10 days after, and 1, 3, 6, 9, 12, 18, and 24 months after RP. Chronological erectile function and testosterone levels were then evaluated...
July 2, 2018: Andrology
https://www.readbyqxmd.com/read/29959833/optimization-of-laboratory-procedures-for-intrauterine-insemination-survey-of-methods-in-relation-to-clinical-outcome
#18
L Lemmens, S Kos, C Beijer, D D M Braat, M A Jonker, W L D M Nelen, A M M Wetzels
BACKGROUND: There is a wide practice variation of used methods and outcomes in IUI in fertility laboratories. Standardization of the IUI procedure is important for reducing inconsistency among laboratories in counseling infertile couples and in pregnancy results. The aim of the study was to evaluate the currently used laboratory procedures of IUI in Dutch fertility laboratories and their effect on IUI pregnancy results. Additionally, the methods for semen analysis (SA) were evaluated, as SA is related to IUI in terms of inseminated sperm number and IUI counseling...
June 29, 2018: Andrology
https://www.readbyqxmd.com/read/29959832/an-illustration-of-human-sperm-morphology-and-their-functional-ability-among-different-group-of-subfertile-males
#19
P Sunanda, B Panda, C Dash, R N Padhy, P Routray
Condensed sperm chromatin is a prerequisite for natural fertilization. Some reports suggested the prevalence of chromatin condensation defects in teratozoospermia cases with head anomalies; conversely, earlier studies exemplified its occurrence in morphologically normal spermatozoa too. The aim of this study was to compare the condensation defects in correlation with head anomalies among different groups of subfertile males and its impact on the rate of fertilization in assisted reproduction procedures. Ultrastructure analysis of spermatozoa through scanning electron microscopy and atomic force microscopy could facilitate an in-depth evaluation of sperm morphology...
June 29, 2018: Andrology
https://www.readbyqxmd.com/read/29952145/trends-in-rates-of-inpatients-treated-for-testicular-cancer-in-france-2000-2014
#20
Yao C Kudjawu, Florence de Maria, Nathalie Beltzer
Testicular cancer is rare, accounting for 1-3% of incidence of all malignancies in men. Forecasts predict that the incidence of testicular cancer will increase by 25% in Europe by 2025. We aimed to describe temporal and spatial trends of rates of patients surgically treated for testicular cancer (STTC) in France over the period 2000-2014. Using the International Classification of Diseases and medical procedure codes, from the national hospital discharge database, we selected patients diagnosed with testicular cancer during 2000-2014 who underwent surgery...
June 28, 2018: Andrology
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