Plasma levels of cyclic guanosine-3′,5′-monophosphate in the cavernous and systemic blood of healthy males during different functional conditions of the penis

2001 ◽  
Vol 29 (5) ◽  
pp. 366-370 ◽  
Author(s):  
Armin Becker ◽  
Stefan Ückert ◽  
Christian Stief ◽  
Udo Jonas
Keyword(s):  
Plasma Levels ◽  
Systemic Blood ◽  
Cavernous And Systemic Blood ◽  
Healthy Males

Plasma levels of angiotensin II during different penile conditions in the cavernous and systemic blood of healthy men and patients with erectile dysfunction

Urology ◽  
2001 ◽  
Vol 58 (5) ◽  
pp. 805-810 ◽  
Author(s):  
Armin J. Becker ◽  
Stefan Ückert ◽  
Christian G. Stief ◽  
Friedemann Scheller ◽  
Wolfram H. Knapp ◽  
...  
Keyword(s):  
Erectile Dysfunction ◽  
Angiotensin Ii ◽  
Plasma Levels ◽  
Systemic Blood ◽  
Healthy Men ◽  
Cavernous And Systemic Blood

ENDOCRINE EFFECTS OF MASTURBATION IN MEN

1976 ◽  
Vol 70 (3) ◽  
pp. 439-444 ◽  
Author(s):  
K. PURVIS ◽  
B.-M. LANDGREN ◽  
Z. CEKAN ◽  
E. DICZFALUSY
Keyword(s):  
Plasma Levels ◽  
The Other ◽  
Endocrine Effects ◽  
Systemic Blood ◽  
Peripheral Plasma ◽  
Semen Collection ◽  
Before And After ◽  
Control Study ◽  
Healthy Males ◽  
Apparently Healthy

SUMMARY The levels of pregnenolone, dehydroepiandrosterone (DHA), androstenedione, testosterone, dihydrotestosterone (DHT), oestrone, oestradiol, cortisol and luteinizing hormone (LH) were measured in the peripheral plasma of a group of young, apparently healthy males before and after masturbation. The same steroids were also determined in a control study, in which the psychological anticipation of masturbation was encouraged, but the physical act was not carried out. The plasma levels of all steroids were significantly increased after masturbation, whereas steroid levels remained unchanged in the control study. The most marked changes after masturbation were observed in pregnenolone and DHA levels. No alterations were observed in the plasma levels of LH. Both before and after masturbation plasma levels of testosterone were significantly correlated to those of DHT and oestradiol, but not to those of the other steroids studied. On the other hand, cortisol levels were significantly correlated to those of pregnenolone, DHA, androstenedione and oestrone. In the same subjects, the levels of pregnenolone, DHA, androstenedione, testosterone and DHT in seminal plasma were also estimated; they were all significantly correlated to the levels of the corresponding steroid in the systemic blood withdrawn both before and after masturbation. As a practical consequence, the results indicate that whenever both blood and semen are analysed, blood sampling must precede semen collection.

Systemic and cavernous plasma levels of endothelin (1-21) during different penile conditions in healthy males and patients with erectile dysfunction

2001 ◽  
Vol 19 (4) ◽  
pp. 267-271 ◽  
Author(s):  
Armin J. Becker ◽  
Stefan Ückert ◽  
Christian G. Stief ◽  
Michael C. Truss ◽  
Uwe Hartmann ◽  
...  
Keyword(s):  
Erectile Dysfunction ◽  
Plasma Levels ◽  
Endothelin 1 ◽  
Healthy Males

Cavernous and systemic testosterone plasma levels during different penile conditions in healthy males and patients with erectile dysfunction

Urology ◽  
2001 ◽  
Vol 58 (3) ◽  
pp. 435-440 ◽  
Author(s):  
Armin J Becker ◽  
Stefan Ückert ◽  
Christian G Stief ◽  
Friedemann Scheller ◽  
Wolfram H Knapp ◽  
...  
Keyword(s):  
Erectile Dysfunction ◽  
Plasma Levels ◽  
Healthy Males

Circadian rhythms in plasma levels of cortisol, dehydroepiandrosterone, Δ4-androstenedione, testosterone and dihydrotestosterone of healthy young men

1980 ◽  
Vol 94 (4) ◽  
pp. 536-545 ◽  
Author(s):  
Michel M. Guignard ◽  
Pierre C. Pesquies ◽  
Bernard D. Serrurier ◽  
Danielle B. Merino ◽  
Alain E. Reinberg
Keyword(s):  
Circadian Rhythms ◽  
Ethyl Ether ◽  
Plasma Levels ◽  
Plasma Sample ◽  
Young Men ◽  
Venous Catheter ◽  
Diurnal Activity ◽  
Androgenic Steroids ◽  
Healthy Males

Abstract. Three healthy males (18, 22 and 30 years of age; 85 kg/177 cm, 82 kg/181 cm and 75 kg/168 cm, respectively), synchronized with a diurnal activity (06.00 to 23.00 h) and nocturnal rest, volunteered for this study. Blood was sampled (venous catheter) hourly during a 24 h span. A radiocompetition method was used for cortisol determinations. Other steroids were first extracted (ethyl-ether) from each plasma sample, then chromatographed on a celite column to isolate 3 fractions: 1) Δ4-androstenedione (Δ-4); 2) dihydrotestosterone (DHT) and dehydroepiandrosteone (DHA); 3) testosterone (T). A radioimmunological assay was used thereafter for the determination of androgenic steroids. Statistically significant (both conventional and cosinor methods) circadian rhythms were detected (P < 0.005). Acrophases (peak times) occurred in the following order: cortisol (07.28), DHA (08.43), Δ-4 (09.54), T (11.15) and DHT (16.37). The respective circadian amplitudes of DHA and Δ-4 were smaller than those of cortisol while the amplitudes T and DHT did not show differences statistically significant from each other.

Systemic and cavernous plasma levels of neuropeptide Y during sexual arousal in healthy males

Andrologia ◽  
2011 ◽  
Vol 44 ◽  
pp. 307-311 ◽  
Author(s):  
S. Ückert ◽  
L. Soyk ◽  
M. Trottmann ◽  
C. G. Stief ◽  
M. A. Kuczyk ◽  
...  
Keyword(s):  
Neuropeptide Y ◽  
Sexual Arousal ◽  
Plasma Levels ◽  
Healthy Males

Systemic and cavernous plasma levels of endothelin 1 in healthy males during different functional conditions of the penis

2000 ◽  
Vol 18 (3) ◽  
pp. 227-231 ◽  
Author(s):  
Armin J. Becker ◽  
Stefan Ückert ◽  
Christian G. Stief ◽  
Michael C. Truss ◽  
Uwe Hartmann ◽  
...  
Keyword(s):  
Plasma Levels ◽  
Endothelin 1 ◽  
Healthy Males

Systemic and cavernous plasma levels of vasoactive intestinal polypeptide during sexual arousal in healthy males

2002 ◽  
Vol 20 (1) ◽  
pp. 59-63 ◽  
Author(s):  
Armin J. Becker ◽  
Stefan Ückert ◽  
Christian G. Stief ◽  
Friedemann Scheller ◽  
Wolfram H. Knapp ◽  
...  
Keyword(s):  
Sexual Arousal ◽  
Vasoactive Intestinal Polypeptide ◽  
Plasma Levels ◽  
Healthy Males ◽  
Intestinal Polypeptide
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