The aim of this study was to evaluate the role of platelet count (PLT) and platelet volume indices (PVI) such as mean platelet volume (MPV), platelet distribution width (PDW) and plateletcrit (PCT) as a clinical biomarker in 64 infertile males with varicocele and 45 controls. In addition, semen parameters, serum total testosterone, FSH and testicular volume were measured before and at 6 months after varicocelectomy. The mean PLT, MPV, PDW and PCT were 231 ± 42 × 103/µl, 9.6 ± 1.8 fl, 16.2 ± 2.5 fl and 0.18% in the patient group respectively. When the patient and control groups were compared, there was a significant increase in mean MPV, PDW and PCT (p < .0001), while platelet count was lower in patients than control group, but with no significant relationship. MPV had a significant negative correlation with total testosterone (p < .03). No significant correlations were found between PVI and testicular volume. After follow-up of 37.1 ± 1.9 months, a significant negative correlation was found between the preoperative MPV and varicocelectomy outcome in terms of semen values (p < .007). So, the increase in MPV and low total testosterone in men with varicocele may be a feature of high risk of infertility.
K E Y W O R D Sinfertility, mean platelet volume, platelets count, semen parameters, varicocele 2 of 5 | GHANEM Et Al.
| MATERIAL S AND ME THODS
| Study sampleA total of 180 clinically diagnosed varicocele cases referred to our urology department with infertility. From this group, 64 patients with abnormal semen values underwent varicocelectomy. Forty-five infertile varicocele cases with normal semen values were randomly selected, included as control group, with a similar age between two groups. The protocol of this study followed the guidelines of the Declaration of Helsinki. Also, all the participants provided us a consent.
| Selection criteriaPatient was initially included with the complaints of infertility and abnormal semen values by using WHO criteria (2010). Patients were included after excluding other genital diseases, exposure to gonadotoxins, sperm antibodies, endocrinological and internal diseases. In addition, patients with vascular problems (e.g., peripheral vascular disease, heart disease, thrombocytopenic purpura, thrombocytopenia, leukaemia and splenectomy) were excluded.The varicocele diagnosis was assigned by using the 1993 WHO guidelines. Patients with grade 1 varicocele were excluded from the study. The testicular volume was calculated by colour Doppler ultrasonography using Schiff formula (Schiff, Li, & Goldstein, 2004).
| Laboratory analysisPeripheral venous samples were drawn into blood tubes containing ethylenediaminetetraacetic acid, early morning following an overnight fast, before varicocelectomy. All samples were analysed within 2 hr (Lance, Oerle, Henskens, & Marcus, 2010). The PLT and PVI (MPV, PDW and PCT) were measured using an automated blood cell analyser. Also, serum FSH, total testosterone levels and semen analysis were evaluated by using the procedure described by Mitchell et al. ...