Comparative Content of Neuron-Specific Enolase in Human Blood Serum and Seminal Plasma.

We studied the content of neuron-specific enolase (NSE) in 69 paired samples of blood serum and seminal plasma from men with azoospermia (n=11) and oligoastenozoospermia (n=10) and from men with fertile ejaculate (n=48). NSE concentration was determined by ELISA (Vector-Best kit). The median concentration and the interquartile range of the NSE content in seminal plasma were 65.7 (47.9; 83.4) ng/ml and 24.33 times (р<0.000001) exceeded those for blood serum 2.7 (1.45; 4.0) ng/ml. There were no differences in the content of NSE between the groups for both seminal plasma and blood serum. The content of NSE in seminal plasma did not correlate with the content of NSE in blood serum, and also did not depend on the content of spermatozoa. A weak negative correlation (r=-0.341; p=0.0057) was found between the age of the examinees and the level of NSE in seminal plasma, but not in blood serum.

[The immunochemical determination of the concentration of organ-specific ejaculate proteins in the differential diagnosis of chronic inflammatory diseases of the male reproductive system]. / Immunokhimicheskoe opredelenie kontsentratsii organospetsificheskikh belkov éiakuliata v differentsial'noi diagnostike khronicheskikh vospalitel'nykh zabolevanii muzhskoi reproduktivnoi sistemy.

Concentrations of lactoferrin (LF), alpha-microglobulin of fertility (AMGF) and specific thermostable alpha-glycoprotein (STAG) which are markers of the prostate, seminal vesicles and testiculi in ejaculate, respectively, were determined by Ouchterlony's immunodiffusion method in 148 patients with chronic prostatitis (group 1), 26 patients with combination of prostatitis with chronic epididymitis (group 2) and 22 healthy controls (group 3). After that the patients were given prostatilen. It was found that high pretreatment values of LF registered in groups 1 and 2 lowered close to those in the controls. This shows elevated LF to be a diagnostic sign of prostatitis. In group 1 AMGF was lower than in controls, in groups 1, 2 and 3 STAG levels were similar.