A quantitative morphological study of age-related changes in the donkey testis in the period between puberty and senium.

abstract：:Leydig cells and seminiferous tubules of human testicular tissue were successfully separated by means of an anti-substance P-antiserum. On incubation with (14C)-testosterone or (14C)-dihydrotestosterone (DHT) it could be shown that besides DHT and 5 alpha-androstane-3 alpha, 17 beta-diol (3 alpha-diol) also 5 alpha-an...

journal_title：Andrologia

authors： Tamm J,Volkwein U,Schulze W

更新日期：1990-01-01 00:00:00

abstract：:Primary seminal vesicle adenocarcinoma is a rare malignancy of the male genito-urinary system with only a few confirmed reported cases. Initial tissue diagnostic modality is often a core biopsy specimen. Here, we report this rare entity in a 50-year-old male, highlighting the histomorphological and immunohistochemical...

journal_title：Andrologia

authors： Bhardwaj N,Rastogi P,Attri VS,Bora GS,Gorsi U

更新日期：2020-04-01 00:00:00

abstract：:The acrosome is a secretory vesicle located in the sperm head. The acrosome reaction consists in the fusion of the sperm plasma membrane with the external acrosomal membrane. It has been observed that this reaction does not take place in spermatozoa incubated in cervical mucus, hydrogel that contains high concentratio...

journal_title：Andrologia

authors： Vigil P,Toro A,Godoy A

更新日期：2008-06-01 00:00:00

abstract：:Subnormal levels of testosterone are associated with significant negative health consequences, with higher risks of all-cause and cardiovascular mortality. The numbers of studies reporting on the benefits of normalisation of testosterone is increasing but longer-term data on (elderly) men receiving testosterone treatm...

journal_title：Andrologia

authors： Yassin AA,Nettleship J,Almehmadi Y,Salman M,Saad F

更新日期：2016-09-01 00:00:00

abstract：:The aim of this study was to investigate the relationship between sulphur dioxide (SO2 ) signalling pathway and the changes in erectile function under low androgen levels. Thirty-six healthy male Sprague Dawley (SD) rats aged eight weeks were randomly divided into androgen replacement group, castration group and sham ...

journal_title：Andrologia

authors： Li X,Jiang J,Xia J,Jiang R

更新日期：2019-02-01 00:00:00

abstract：:Little is known about the biological and clinical significance of bilaterally enlarged testes (bilateral megalotestes or macroorchidism). We have investigated clinical, endocrine and spermatological characteristics of 135 andrological patients with a testicular volume of more than 25 ml bilaterally. 135 patients with ...

journal_title：Andrologia

authors： Meschede D,Behre HM,Nieschlag E

更新日期：1995-07-01 00:00:00

abstract：:Iatrogenic obstruction of the vas deferens within the inguinal canal can be managed by direct on-site vasovasostomy. However, in cases with large defect of the vas, the anastomosis may be under tension. Dissecting through the site of a previous hernia repair is tedious, and may lead to recurrence of the hernia. The pr...

journal_title：Andrologia

authors： Shaeer OK,Shaeer KZ

更新日期：2004-10-01 00:00:00

abstract：:In this randomized prospective study, we determined the conception rate following intra-uterine insemination with washed and prepared sperm, or with the first portion of a split ejaculate, in couples with longstanding male (n = 27, 70 treatment cycles) or cervical infertility (n = 14, 29 treatment cycles). Folliculoge...

journal_title：Andrologia

authors： Goldenberg M,Rabinovici J,Bider D,Lunenfeld B,Blankstein J,Weissenberg R

更新日期：1992-05-01 00:00:00

abstract：:This study was a 12-week double blind placebo-controlled, randomized, parallel trial in which active treatment with different doses of Maca Gelatinizada was compared with placebo. The study aimed to demonstrate if effect of Maca on subjective report of sexual desire was because of effect on mood or serum testosterone ...

journal_title：Andrologia

authors： Gonzales GF,Córdova A,Vega K,Chung A,Villena A,Góñez C,Castillo S

更新日期：2002-12-01 00:00:00

abstract：:Three new cases of low chiasma frequency in infertile men are described. In the first case, all cells showed abnormal diakineses; in the second, 20% of the diakineses were desynaptic, while the remaining 80% were normal; in the third, all diakineses were desynaptic and showed chromosome fragmentation. The possible mec...

journal_title：Andrologia

authors： Templado C,Marina S,Egozcue J

更新日期：1976-01-01 00:00:00

abstract：:Ten subfertile men affected by idiopathic oligoteratoasthenozoospermia and exhibiting normal serum hormone levels received a long-term treatment with human pure follicle-stimulating hormone (hp-FSH) (150 IU, intramuscularly, three times per week for 6 months). Semen parameters and ultrastructural features of spermatoz...

journal_title：Andrologia

authors： Arnaldi G,Balercia G,Barbatelli G,Mantero F

更新日期：2000-05-01 00:00:00

abstract：:The aim of this study was to uncover the protective effect of berberine (BBR), an antioxidant chemical, on experimental varicocele (VCL)-induced adverse effects on cell cycle machinery during early germ cells mitosis. To follow-up this study, 30 mature male Wistar rats were divided into control-sham, nontreated VCL, 5...

journal_title：Andrologia

authors： Amin M,Razi M,Sarrafzadeh-Rezaei F,Shalizar Jalali A,Najafi G

更新日期：2018-02-14 00:00:00

abstract：:This study was designed to evaluate the effects of semen processing on the generation of intracellular reactive oxygen species (ROS) and mitochondrial membrane potential (MMP) in spermatozoa, and to develop reliable indexes for the evaluation of sperm quality during sperm preparation. Swim-up and density gradient cent...

journal_title：Andrologia

authors： Li Z,Zhou Y,Liu R,Lin H,Liu W,Xiao W,Lin Q

更新日期：2012-06-01 00:00:00

abstract：:In 1982, 89 men from all over the FRG participated in an investigation of sperm density and the presence of selected persistent environmental chemicals in their semen. Semen concentrations for the following chemicals were measured: lead, cadmium, hexachlorobenzene (HCBC), a-hexachlorocyclohexane (a-BHC), DDT and metab...

journal_title：Andrologia

authors： Stachel B,Dougherty RC,Lahl U,Schlösser M,Zeschmar B

更新日期：1989-05-01 00:00:00

abstract：:By means of a recently developed apparatus ("Separon") motile spermatozoa were concentrated in a small volume of culture medium (0,3 ml). Sperm concentration, progressive motility and mean velocity of 60 ejaculates were determined by a computerized videomicrography system. After "Separon" sperm concentration was reduc...

journal_title：Andrologia

authors： Wölbling RH,Pemper B,Möslein S,Milbradt R,Taubert HD

更新日期：1988-01-01 00:00:00

abstract：:In cases of varicocele the reverse venous blood flow can be detected by the use of the Doppler-stethoscope in a simple way. Applied to the basic examination of fertility patients this method has proved to be a valuable non-invasive screening in the evaluation of varicoceles including cases with minor clinical symptoms...

journal_title：Andrologia

authors： Ebert L,Bedbur M,Hofmann N

更新日期：1980-09-01 00:00:00

abstract：:The total amount of humoral sperm antibody protein is determined following its isolation by affinity-chromatography on spermatozoa. Serum proteins are eluted by Sorensen phosphate buffer. Antibodies attached to spermatozoa suspended in Sephadex G 75 columns resist elution by Sorensen buffer. They can be quantitatively...

journal_title：Andrologia

authors： Gradl T,Mettler L,Schirren C

更新日期：1975-01-01 00:00:00

abstract：:Varicocele is the most common cause of male infertility. Several theories have been proposed to explain how varicocele induces infertility. The role of epididymis in male infertility is not fully well established. Fibrinogen-like protein 2 is one of serine proteases and is a potent coagulant in membranous form and imm...

journal_title：Andrologia

authors： Elesawy FM,Abdel Hafeez NA,Abdelsalam OH,Akl EM

更新日期：2020-07-01 00:00:00

abstract：:Between 1994 and 2010, a total of 123 patients with obstructive azoospermia due to aplasia of vas deferens (CAVD) were surgically treated. In 110 patients, the condition was bilateral (CBAVD), 13 men had unilateral aplasia (CUAVD), and 10 patients additionally had aplasia of one kidney. All patients underwent CFTR gen...

journal_title：Andrologia

authors： Schwarzer JU,Schwarz M

更新日期：2012-10-01 00:00:00

abstract：:Monoclonal and polyclonal antibodies were used in indirect immunofluorescence microscopy to localize vimentin intermediate filaments in the rat seminiferous epithelium. During stages XII-V of the epithelial cycle, the Sertoli cells showed a reaction in the perinuclear area and vimentin-positive extensions, projecting ...

journal_title：Andrologia

authors： Mali P,Virtanen I,Parvinen M

更新日期：1987-11-01 00:00:00

abstract：:The aim of this study was to determine the effect(s) of dietary omega-3 polyunsaturated fatty acids (ω-3 PUFA) on rabbit semen. Adult rabbit bucks were assigned to two groups that were given two diets, a standard diet (control) and a diet supplemented with ω-3 PUFA. Sperm samples were collected from all bucks with the...

journal_title：Andrologia

authors： Kokoli AN,Lavrentiadou SN,Zervos IA,Tsantarliotou MP,Georgiadis MP,Nikolaidis EA,Botsoglou N,Boscos CM,Taitzoglou IA

更新日期：2017-12-01 00:00:00

abstract：:On the basis of microscopical examination and further differentiation by special stain techniques, a new classification of defects of midpieces and tails of spermatozoa will be presented: First degree disorders i.e. abnormalities of the staining behaviour and minor structural defects, second degree disorders revealing...

journal_title：Andrologia

authors： Haidl G,Hartmann R,Hofmann N

更新日期：1987-07-01 00:00:00

abstract：:The aim of this study was to evaluate the effect of Lepidium meyenii (maca) in chemically and physically subfertile mice. After 35 days, the following groups of mice were evaluated: control, sham, chemical subfertility, chemical subfertility-maca-supplemented, physical subfertility, physical subfertility-maca-suppleme...

journal_title：Andrologia

authors： Valdivia Cuya M,Yarasca De La Vega K,Lévano Sánchez G,Vásquez Cavero J,Temoche García H,Torres Torres L,Cruz Ornetta V

更新日期：2016-10-01 00:00:00

abstract：:The calcium-binding proteins (CBPs) of mouse epididymal spermatozoa were analysed by mobility changes in the presence of added Ca2+ in two-dimensional sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE). The expression patterns of relatively high molecular weight CBPs (Mr > 20 kDa) were different bet...

journal_title：Andrologia

authors： Gye MC,Park S,Kim YS,Ahn HS

更新日期：2001-07-01 00:00:00

abstract：:On the basis of the concept that immunogenetic factors play a role in the incidence of unexplained male infertility, the so-called idiopathic infertility, HLA antigen analyses were performed for (1) azoospermia cases among the infertile males diagnosed by testicular biopsies as having germ cell aplasia and (2) unexpla...

journal_title：Andrologia

authors： Kamidono S,Matsumoto O,Ishigami J,Nakao Y,Tsuji K

更新日期：1980-07-01 00:00:00

abstract：:The study was performed to measure the impact of testosterone (T) administration on circulating levels of 5alpha-dihydrotestosterone (DHT). Group 1 (32 men; mean age 61 years; mean T 6.9 +/- 1.9 nmol l(-1)) were treated for 15 months with long-acting T undecanoate. Group 2 (23 men, mean age 60 years, mean T 7.6 +/- 2....

journal_title：Andrologia

authors： Gooren LJ,Saad F,Haide A,Yassin A

更新日期：2008-10-01 00:00:00

abstract：:Alternations of estramustine binding protein (EMBP) concentration in rat prostate in relation to androgen status under hypo- and hyperthyroid conditions was estimated by means of radioimmunoassay (RIA). In hyperthyroid rats, EMBP concentration in dorsal as well as in lateral prostate was not significantly changed, but...

journal_title：Andrologia

authors： Shiina H,Sumi H,Ishibe T,Usui T

更新日期：1991-03-01 00:00:00

abstract：:Primordial germ cells in the mouse are known to be derived from the epiblast. They can be identified histochemically, by their high alkaline phosphatase activity. At 8 d post coitum they have been observed within the embryonic part of the egg cylinder, at the posterior end of the primitive streak. Earlier, at 7.25 day...

journal_title：Andrologia

authors： McLaren A

更新日期：1992-09-01 00:00:00

abstract：:Several studies have shown that high oxidative stress levels are associated with varicocele. The GST (glutathione S-transferase) family of genes is critical in the protection of cells from oxidative stress because they utilise as substrates a wide variety of products of oxidative stress. The objective of this study wa...

journal_title：Andrologia

authors： Acar H,Kılınç M,Guven S,Inan Z

更新日期：2012-02-01 00:00:00

abstract：:The sperm function of fertile men (control), infertility patients (experimental), and men with varicocele were compared. The bioassays used were the follicular fluid-induced acrosome reaction, the binding to the zona pellucida, and the penetration of zona-free hamster oocytes. The percentage (mean +/- SEM) of reacted ...

journal_title：Andrologia

authors： Vigil P,Wöhler C,Bustos-Obregón E,Comhaire F,Morales P

更新日期：1994-03-01 00:00:00