Light and electron microscopic study of mature spermatozoa from White Pekin duck (Anas platyrhynchos): an ultrastructural and molecular analysis.

abstract：:Germ cell and Sertoli cell proliferation and maturation in human testes occur in three main waves, during the late fetal and early neonatal period and at early puberty. They are triggered by periods of increased activity of the hypothalamic-pituitary-gonadal (HPG) axis. In hypogonadotropic hypogonadism (HH), these pro...

journal_title：Andrology

authors： Rohayem J,Sinthofen N,Nieschlag E,Kliesch S,Zitzmann M

更新日期：2016-01-01 00:00:00

abstract：BACKGROUND:The presence of miRNAs in human reproductive tissue is intriguing and suggests the possibility that these important regulatory molecules play a role in reproductive function. However, the regulatory role of miRNAs in reproductive tissue remains poorly understood with a significant amount of controversial and...

journal_title：Andrology

authors： Salas-Huetos A,James ER,Aston KI,Carrell DT,Jenkins TG,Yeste M

更新日期：2020-01-01 00:00:00

abstract：BACKGROUND:Penile cancer represents a rare pathology whose natural history of treatment is poorly understood. OBJECTIVE:To illustrate the dynamic survival profiles in surgically treated patients with squamous cell carcinoma of the penis (SCCP) using the conditional survival (CS) estimates. MATERIALS AND METHODS:Patie...

journal_title：Andrology

authors： Liu W,Luo Y,Wang G,Li N,Wang Z,Lei J,Wang X

更新日期：2020-11-01 00:00:00

abstract：:Scarce data are available on epidemiology of varicocoele, the most common surgically correctable cause of male infertility. The objectives of this study were to evaluate the association between body mass index (BMI) and varicocoele and to assess trends in prevalence over time. We conducted a nationwide population-base...

journal_title：Andrology

authors： Rais A,Zarka S,Derazne E,Tzur D,Calderon-Margalit R,Davidovitch N,Afek A,Carel R,Levine H

更新日期：2013-09-01 00:00:00

abstract：:The effects of equilibration times (E1, 2 h; E2, 4 h; E3, 6 h), freezing rates (FR1, manual, 5 cm above liquid nitrogen (LN2 ) for 10 min, plunging in LN2 ; FR2, programmable ultra-fast, holding at +4 °C for 2 min, from 4 to -10 °C at -10 °C/min, from -10 to -20 °C at -15 °C/min, from -20 to -120 °C at -60 °C/min, hol...

journal_title：Andrology

authors： Shah SA,Andrabi SM,Qureshi IZ

更新日期：2016-09-01 00:00:00

abstract：:The second messenger cyclic adenosine monophosphate (cAMP) has a central role in sperm physiology. Extracellular cAMP can be sequentially degraded into 5'AMP and adenosine by ecto-phosphodiesterases (ecto-PDE) and ecto-nucleotidases, a phenomenon called extracellular cAMP-adenosine pathway. As cAMP-adenosine pathway i...

journal_title：Andrology

authors： Bergeron A,Aragon JP,Guillemette C,Hébert A,Sullivan R,Blondin P,Richard FJ

更新日期：2016-11-01 00:00:00

abstract：:The double sex and mab-3-related transcription factor 1 (DMRT1) gene has long been linked to sex-determining pathways across vertebrates and is known to play an essential role in gonadal development and maintenance of spermatogenesis in mice. In humans, the genomic region harboring the DMRT gene cluster has been impli...

journal_title：Andrology

authors： Lima AC,Carvalho F,Gonçalves J,Fernandes S,Marques PI,Sousa M,Barros A,Seixas S,Amorim A,Conrad DF,Lopes AM

更新日期：2015-09-01 00:00:00

abstract：BACKGROUND:The current results of in vitro reproduction techniques in pigs, such as in vitro fertilization (IVF) and embryo development, show high performance with both epididymal and ejaculated spermatozoa. However, the results using ejaculated spermatozoa are even better. Ejaculated spermatozoa are exposed to the sec...

journal_title：Andrology

authors： Soriano-Úbeda C,Avilés-López K,García-Vázquez FA,Romero-Aguirregomezcorta J,Matás C

更新日期：2021-01-01 00:00:00

abstract：:Deletions on the long arm of the Y chromosome are a well-known cause of male infertility and it is generally accepted that deletions involving the AZFb region are not compatible with sperm production. Here, we report on two patients for whom basic diagnostic tests showed a deletion of the AZFb region. Unexpectedly, bo...

journal_title：Andrology

authors： Stouffs K,Vloeberghs V,Gheldof A,Tournaye H,Seneca S

更新日期：2017-07-01 00:00:00

abstract：:The main aim of this work was to evaluate how supplementing freezing media with reduced glutathione (GSH) affected the 'in vivo' fertilizing ability of boar semen subjected to cryopreservation procedures. With this purpose, 12 ejaculates coming from 12 boars were cryopreserved in the presence or absence of 2 mm GSH, w...

journal_title：Andrology

authors： Estrada E,Rodríguez-Gil JE,Rocha LG,Balasch S,Bonet S,Yeste M

更新日期：2014-01-01 00:00:00

abstract：BACKGROUND:Testicular architecture and sperm production are supported by a complex network of communication between various cell types. These signals ensure fertility by: regulating spermatogonial stem/progenitor cells; promoting steroidogenesis; and driving male-specific differentiation of the gonad. Sertoli cells hav...

journal_title：Andrology

authors： Heinrich A,DeFalco T

更新日期：2020-07-01 00:00:00

abstract：:Oxidation-reduction potential describes the balance between the oxidants and antioxidants in fluids including semen. Various artificial culture media are used in andrology and IVF laboratories for sperm preparation and to support the development of fertilized oocytes under in vitro conditions. The composition and cond...

journal_title：Andrology

authors： Panner Selvam MK,Henkel R,Sharma R,Agarwal A

更新日期：2018-03-01 00:00:00

abstract：BACKGROUND:Despite existing evidence regarding the role of testosterone as a protective factor for the kidney function in male adults, there are conflicting and inconclusive results on the influence of testosterone deficiency on developing chronic kidney disease (CKD). OBJECTIVE:This study aimed to investigate the inc...

journal_title：Andrology

authors： Amiri M,Ramezani Tehrani F,Rahmati M,Amanollahi Soudmand S,Behboudi-Gandevani S,Sabet Z,Azizi F

更新日期：2020-05-01 00:00:00

abstract：OBJECTIVE:To evaluate the association between cannabis use and testicular function (as assessed through semen quality and serum hormone levels) in different populations. EVIDENCE REVIEW:Systematic review and meta-analysis of population-based retrospective cohort studies. PRISMA guidelines were used for abstracting dat...

journal_title：Andrology

authors： Belladelli F,Del Giudice F,Kasman A,Kold Jensen T,Jørgensen N,Salonia A,Eisenberg ML

更新日期：2020-11-29 00:00:00

abstract：BACKGROUND:Men with congenital unilateral absence of vas deferens were reported to be mainly azoospermic, with both unilateral renal absence and mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) but some have neither. OBJECTIVES:To assess whether in infertile couples the male partners with co...

journal_title：Andrology

authors： Mieusset R,Bieth E,Daudin M,Isus F,Delaunay B,Bujan L,Monteil L,Fauquet I,Huyghe E,Hamdi SM

更新日期：2020-05-01 00:00:00

abstract：:Treatment of testicular cancer includes the coadministration of bleomycin, etoposide and cis-platinum (BEP); however, along with its therapeutic benefit, BEP exposure results in extensive reproductive chemotoxic effects, including alterations to sperm chromatin integrity. As an intact paternal genome is essential for ...

journal_title：Andrology

authors： Maselli J,Hales BF,Robaire B

更新日期：2014-03-01 00:00:00

abstract：:Male factor etiology may be a contributing factor in up to 60% of infertility cases. Dietary intake of phytoestrogens has been related to abnormal semen quality and hormone levels. However, its effect on couple fecundity is still unclear. Intake of soy products was assessed in 184 men from couples undergoing infertili...

journal_title：Andrology

authors： Mínguez-Alarcón L,Afeiche MC,Chiu YH,Vanegas JC,Williams PL,Tanrikut C,Toth TL,Hauser R,Chavarro JE

更新日期：2015-07-01 00:00:00

abstract：:Interactions between infertility and sexuality are numerous and complex. Infertile men may suffer from sexual dysfunction (SD) when undergoing an assisted reproductive technology programme. We undertook a review both in French and English of the available data on male SD when being diagnosed with a fertility problem w...

journal_title：Andrology

authors： Bechoua S,Hamamah S,Scalici E

更新日期：2016-05-01 00:00:00

abstract：:Bisphenol A (BPA) is widely used in food contact materials, toys, and other products. Several studies have indicated that effects observed at doses near human exposure levels may not be observed at higher doses. Many studies have shown effects on mammary glands at low doses of BPA, however, because of small number of ...

journal_title：Andrology

authors： Mandrup K,Boberg J,Isling LK,Christiansen S,Hass U

更新日期：2016-07-01 00:00:00

abstract：:The use of intra-cytoplasmic sperm injection (ICSI) has increased significantly worldwide, often chosen instead of in vitro fertilization (IVF), yet long-term health outcomes are unknown and health differences between ICSI and IVF conceptions have not been comprehensively assessed. A systematic review of health outcom...

journal_title：Andrology

authors： Catford SR,McLachlan RI,O'Bryan MK,Halliday JL

更新日期：2017-07-01 00:00:00

abstract：BACKGROUND:We previously demonstrated how mouse spermatozoa can be efficiently stored for two years in a -80°C freezer, maintaining their ability to fertilize mouse eggs. OBJECTIVES:The main objective here was to evaluate the effects of five years at -80°C compared to liquid nitrogen storage (LN2 , control condition) ...

journal_title：Andrology

authors： Raspa M,Putti S,Paoletti R,Barboni B,Ramal-Sanchez M,Lanuti P,Marchisio M,D'Atri M,Ortolani C,Papa S,Valbonetti L,Bernabo N,Scavizzi F

更新日期：2021-01-11 00:00:00

abstract：:In cryptorchid boys, failures in germ cell development have been clearly established. Some studies reported some abnormalities in Sertoli cells morphology but the results regarding their endocrine secretion remain controversial. To compare testicular hormone levels in young boys with and without cryptorchidism, we per...

journal_title：Andrology

authors： Hamdi SM,Almont T,Galinier P,Mieusset R,Thonneau P

更新日期：2017-07-01 00:00:00

abstract：:In this study a Bayesian network (BN) has been built for the study of the objective motility of Tinca tinca spermatozoa (spz). Semen from eight 2-year-old sexually mature male tenchs was obtained and motility analyses were performed at 6-17, 23-34 and 40-51 s after activation, using computer-assisted sperm analysis (C...

journal_title：Andrology

authors： Gil Anaya MC,Calle F,Pérez CJ,Martín-Hidalgo D,Fallola C,Bragado MJ,García-Marín LJ,Oropesa AL

更新日期：2015-09-01 00:00:00

abstract：:Approximately 40% of middle-aged men exhibit symptoms of late-onset hypogonadism (LOH). However, the mechanism of androgen deficiency is still currently unclear. As shown in our previous studies, the SET protein is expressed in testicular Leydig cells and ovarian granule cells. This study was designed to investigate t...

journal_title：Andrology

authors： Zhang B,Ma W,Zhu Q,Xu W,Gao L,Xu B,Xu S,Gao C,Gao L,Liu J,Cui Y

更新日期：2018-05-01 00:00:00

abstract：BACKGROUND:Bulls are of great importance in the productive chain and for this reason they should have a good semen quality. There is no doubt that sperm morphology is very important to bull fertility, although little is known about how exactly the abnormal morphologies may affect sperm functions. OBJECTIVES:To detail ...

journal_title：Andrology

authors： Díaz-Miranda EA,Maitan PP,Machado TP,Camilo BS,Lima DA,Okano DS,Penitente-Filho JM,Machado-Neves M,de Oliveira LL,Guimarães SEF,da Costa EP,Guimarães JD

更新日期：2020-01-01 00:00:00

abstract：:Urethral stricture disease, pelvic fracture urethral injury (PFUI), and their various treatment options are associated with erectile dysfunction (ED). The etiology of urethral stricture disease is multifactorial and includes trauma, inflammatory, and iatrogenic causes. Posterior urethral injuries are commonly associat...

journal_title：Andrology

authors： Sangkum P,Levy J,Yafi FA,Hellstrom WJ

更新日期：2015-05-01 00:00:00

abstract：:Escherichia coli (E. coli) is a common pathogen in epididymitis, which represents a prevalent entity in male reproductive tract infections (RTI). Although current treatment regimens using antibiotics are satisfactory, development of antimicrobial resistance by the pathogen represents a challenge in the management of R...

journal_title：Andrology

authors： Biswas B,Bhushan S,Rajesh A,Suraj SK,Lu Y,Meinhardt A,Yenugu S

更新日期：2015-03-01 00:00:00

abstract：:Testicular germ cell tumours (TGCT) typically contain high numbers of infiltrating immune cells, yet the functional nature and consequences of interactions between GCNIS (germ cell neoplasia in situ) or seminoma cells and immune cells remain unknown. A co-culture model using the seminoma-derived TCam-2 cell line and p...

journal_title：Andrology

authors： Klein B,Schuppe HC,Bergmann M,Hedger MP,Loveland BE,Loveland KL

更新日期：2017-07-01 00:00:00

abstract：:Research in the last decade has revealed that bone is not only a target tissue for numerous circulating hormones but functions as an endocrine organ itself. As a recent study demonstrated a stimulatory effect of the osteoblast-derived hormone osteocalcin (OCN) on testosterone production in mice, we investigated whethe...

journal_title：Andrology

authors： Hannemann A,Breer S,Wallaschofski H,Nauck M,Baumeister SE,Barvencik F,Amling M,Schinke T,Haring R,Keller J

更新日期：2013-05-01 00:00:00

abstract：:Fibroblast growth factors (FGFs) and their receptors (FGFRs) regulate several functions of somatic cells. In a previous work, we reported FGFR expression in human spermatozoa and their involvement in motility. This study aimed to evaluate the presence and localization of fibroblast growth factor 2 (FGF2) in human sper...

journal_title：Andrology

authors： Garbarino Azúa DJ,Saucedo L,Giordana S,Magri ML,Buffone MG,Neuspiller F,Vazquez-Levin MH,Marín-Briggiler CI

更新日期：2017-09-01 00:00:00