A study on the association between serum amyloid A and sperm concentration.

Our aim was to compare peripheral blood and seminal fluid serum amyloid A (SAA) protein levels in men classified on the basis of sperm concentration and investigate whether SAA protein is an important marker of male infertility. A total of 74 first-attempt IVF male partners of infertile couples classified as azoospermic (n = 25), oligozoospermic (n = 25) and normozoospermic group (n = 24) were recruited for this cross-sectional study. There was no difference with respect to age, BMI, infertility period and smoking ratio. No difference in haematologic parameters including white blood cell count, neutrophil ratio, lymphocyte ratio, neutrophil-to-lymphocyte ratio and blood SAA level was found between the groups. Seminal fluid SAA level was 17.85 ± 2.21 ng ml(-1) in azoospermics, 16.13 ± 3.58 ng ml(-1) in oligozoospermics and 15.67 ± 4.77 ng ml(-1) in normozoospermics, showing no significant difference. Seminal SAA level was found to be not correlated with blood SAA levels. Therefore, we could not find any associations between these parameters at all. However, further studies with more participants are needed to address the exact action of SAA on spermatogenesis.