Carnitine in seminal fluid as parameter for the epididymal function

Area of Science:

• Reproductive Biology
• Andrology
• Biochemistry

Background:

• Carnitine is a key secretion from the epididymis into human seminal fluid.
• Over 94% of free carnitine in semen originates from the epididymis.

Purpose of the Study:

• To investigate carnitine concentration in patients with normal and abnormal spermiograms.
• To explore the clinical significance of carnitine determination in andrological conditions.
• To diagnose blockages in the male reproductive tract using carnitine levels.

Main Methods:

• Analysis of carnitine concentration in seminal fluid.
• Correlation of carnitine levels with standard semen parameters.
• Evaluation of split ejaculates.
• Simultaneous determination of fructose, citrate, and carnitine.

Main Results:

• Carnitine concentration frequency distributions were analyzed for normal and azoospermic patients.
• Clinical significance demonstrated in postvasectomy semen and Klinefelter's Syndrome.
• Diagnosis of high blockages in the male reproductive tract was achieved.
• Split ejaculate evaluation confirmed carnitine's origin from the ductus deferens, not seminal vesicles.

Conclusions:

• Carnitine determination is clinically significant in andrology, particularly for diagnosing reproductive tract obstructions.
• Epididymis is the exclusive source of seminal fluid carnitine.
• Carnitine levels serve as a valuable biomarker in male reproductive health assessments.