Tubular ectasia of the rete testis in an Angus bull

2021 ◽  
Author(s):  
K Waters ◽  
J Gard ◽  
G Cofield ◽  
J Rush ◽  
Y Boakari ◽  
...  
Keyword(s):  
Rete Testis

scholarly journals Displasia quística de rete testis: revisión de la literatura

2009 ◽  
Vol 33 (4) ◽  
pp. 386-389
Author(s):  
Raquel González López ◽  
Gonzalo Bueno Serrano ◽  
Ricardo García Navas ◽  
Víctor Díez Nicolás ◽  
José Julián Vázquez Escuderos ◽  
...  
Keyword(s):  
Rete Testis

scholarly journals Macrophages in the Rete Testis of Pubertal Male Fowl.

1991 ◽  
Vol 53 (4) ◽  
pp. 727-728 ◽  
Author(s):  
Masaaki NAKAI ◽  
Tetsuo NASU
Keyword(s):  
Rete Testis

Morphology of the rat rete testis in experimental autoimmune orchids

1980 ◽  
Vol 33 (1) ◽  
pp. 293-301 ◽  
Author(s):  
Matti Nykänen
Keyword(s):  
Rete Testis ◽  
Experimental Autoimmune

Insights into differentiation and function of the transition region between the seminiferous tubule and rete testis

2021 ◽  
Author(s):  
A.F.A. Figueiredo ◽  
Rex A. Hess ◽  
S.R. Batlouni ◽  
N.T. Wnuk ◽  
A.O. Tavares ◽  
...  
Keyword(s):  
Transition Region ◽  
Seminiferous Tubule ◽  
Rete Testis ◽  
And Function

TESTOSTERONE AND DIHYDROTESTOSTERONE CONCENTRATIONS IN THE FLUID MILIEU OF SPERMATOZOA IN THE REPRODUCTIVE TRACT OF THE BULL

1973 ◽  
Vol 74 (1) ◽  
pp. 186-200 ◽  
Author(s):  
Venkataseshu K. Ganjam ◽  
Rupert P. Amann
Keyword(s):  
Mass Spectrometry ◽  
Seminal Plasma ◽  
Reproductive Tract ◽  
Binding Assay ◽  
Rete Testis ◽  
Protein Binding Assay ◽  
Highly Sensitive ◽  
Competitive Protein Binding Assay ◽  
Competitive Protein Binding ◽  
Isolated Compound

ABSTRACT Total 17β-hydroxyandrogen concentrations were determined using a competitive protein binding assay, for bovine reproductive fluids. Rete testis fluid and cauda epididymal plasma were separated from the spermcontaining fluids obtained through cannulae from conscious bulls. Al-through the concentration of total 17β-hydroxyandrogens in rete testis fluid was similar (P > 0.05) to that in cauda epididymal plasma (25 and 19 ng/ml), both fluids contained higher (P < 0.01) androgen concentrations than seminal plasma, accessory sex gland fluid or serum from peripheral blood (3–5 ng/ml). However, since the amount of cauda epididymal plasma recovered was much less than for rete testis fluid (0.25 vs 35 ml/day), cauda epididymal plasma contained less than 1 % of the total 17β-hydroxyandrogens which entered the epididymis in rete testis fluid (5 vs 883 ng/day). Testosterone and/or dihydrotestosterone were isolated from the reproductive fluids by Sephadex LH-20 chromatography and quantified by a simple, specific and highly sensitive microassay. Dihydrotestosterone was found only in cauda epididymal plasma (14 ng/ml); identification of the isolated compound was confirmed by mass spectrometry. Dihydrotestosterone accounted for 52% of the 17β-hydroxyandrogens in cauda epididymal plasma while 23 % was testosterone. Testosterone represented 70 % of the 17β-hydroxyandrogens in rete testis fluid and 91 % of those in blood serum. Physiological implications of this shift in androgen balance are discussed.

NUO 2304 Tubular ectasia of rete testis

1997 ◽  
Vol 23 ◽  
pp. S53 ◽  
Author(s):  
Pietro Pavlica ◽  
Libero Barozzi ◽  
Remo Ramini ◽  
Ilari Menchi
Keyword(s):  
Rete Testis

METABOLISM OF RAM TESTICULAR SPERMATOZOA IN THE PRESENCE OF TESTOSTERONE AND RELATED STEROIDS

1970 ◽  
Vol 65 (3) ◽  
pp. 565-576 ◽  
Author(s):  
J. K. Voglmayr ◽  
R. N. Murdoch ◽  
I. G. White
Keyword(s):  
Aerobic Glycolysis ◽  
Rete Testis ◽  
Glycolytic Metabolism ◽  
Anaerobic Conditions ◽  
Aerobic Conditions ◽  
Testicular Spermatozoa ◽  
Almost All ◽  
Oxidation Of Glucose

ABSTRACT The effects of testosterone* and related steroids on the oxidative and glycolytic metabolism of freshly collected ram testicular spermatozoa and of spermatozoa stored under air in rete testis fluid for 3 days at 3°C have been studied. When freshly collected testicular spermatozoa were incubated with glucose under aerobic conditions only a small proportion of the utilized glucose could be accounted for as lactate. The addition of a number of steroids, including testosterone, androstanedione, 5β-androstanedione, androsterone, epiandrosterone and 5β-androsterone, greatly increased aerobic glycolysis, the oxidation of the substrate and the proportion of the utilized substrate converted to lactic acid. After 3 days storage at 3°C, testicular spermatozoa respired at a greater rate than spermatozoa freshly collected from the testes. Although the stimulating effect of steroids on aerobic glycolysis increased after storage, they depressed rather than stimulated the oxidation of glucose by stored testicular spermatozoa. With the exception of androstanedione, which slightly stimulated glycolysis, storage of testicular spermatozoa for 3 days in the presence of steroids did not significantly influence their subsequent metabolism when washed free of the steroids. Both freshly collected and stored ram testicular spermatozoa displayed a marked Pasteur effect, and utilized more glucose and produced more lactate under anaerobic than under aerobic conditions. In the absence of oxygen the steroids did not stimulate glycolysis to any extent. However, epiandrosterone depressed the glycolysis of freshly collected spermatozoa under anaerobic conditions and after storage, 5β-androsterone had a similar effect. Androstanedione, 5β-androstanedione, epiandrosterone and 5β-androsterone were the most effective steroids in altering the metabolism of testicular spermatozoa and, under almost all conditions of incubation, depressed the synthesis of amino acids from glucose. The results suggest that the effects of testosterone and related steroids in vitro may depend on the age of the spermatozoa after their release from the Sertoli cells; the steroid effects may have important consequences in vivo in relation to sperm maturation.

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