• PMID: 17187158
• Gene Name: LAMA1
• Condition: Male infertility, oligoasthenozoospermia, non-obstructive azoospermia (NOA), obstructive azoospermia (OA), congenital bilateral absent vas deferens (CBAVD)
• Association: Associated
• Population size: 125
• Population details: 125 recruited men were equally divided into five groups according to their sperm concentration and clinical examination: fertile normozoospermia, oligoasthenozoospermia, non-obstructive azoospermia (NOA), obstructive azoospermia (OA) and congenital bilate
• Sex: Male
• Infertility type: Male infertility
• Associated genes: laminin
• Other associated phenotypes: Male infertility, oligoasthenozoospermia, non-obstructive azoospermia (NOA), obstructive azoospermia (OA), congenital bilateral absent vas deferens (CBAVD)

Assessment of seminal plasma laminin in fertile and infertile men

El-Dakhly MR, Tawadrous GA, Mostafa T, Roaia MM, El-Nashar AR, Shedeed SA, Kamel II, Aziz AA, El-Mohtaseb Y.

AIM: To assess laminin levels in the seminal plasma of infertile and fertile men, and to analyze the correlation of laminin levels with sperm count, age, sperm motility and semen volume. METHODS: One hundred and twenty-five recruited men were equally divided into five groups according to their sperm concentration and clinical examination: fertile normozoospermia, oligoasthenozoospermia, non-obstructive azoospermia (NOA), obstructive azoospermia (OA) and congenital bilateral absent vas deferens (CBAVD). The patients' medical history was investigated and patients underwent clinical examination, conventional semen analysis and estimation of seminal plasma laminin by radioimmunoassay. RESULTS: Seminal plasma laminin levels of successive groups were: 2.82 +/- 0.62, 2.49 +/- 0.44, 1.77 +/- 0.56, 1.72 +/- 0.76, 1.35 +/- 0.63 U/mL, respectively. The fertile normozoospermic group showed the highest concentration compared to all infertile groups with significant differences compared to azoospermic groups (P<0.05). Testicular contribution was estimated to be approximately one-third of the seminal laminin. Seminal plasma laminin demonstrated significant correlation with sperm concentration (r = 0.460, P < 0.001) and nonsignificant correlation with age (r = 0.021, P = 0.940), sperm motility percentage (r = 0.142, P = 0.615) and semen volume (r = 0.035, P = 0.087). CONCLUSION: Seminal plasma laminin is derived mostly from prostatic and testicular portions and minimally from the seminal vesicle and vas deferens. Estimating seminal laminin alone is not conclusive in diagnosing different cases of male infertility. FAU - El-Dakhly, Mohamed R AU - El-Dakhly MR AD - Andrology Department, Faculty of Medicine, Cairo University, Cairo 12311, Egypt. FAU - Tawadrous, Gamil A AU - Tawadrous GA FAU - Mostafa, Taymour AU - Mostafa T FAU - Roaia, Mohamed M F AU - Roaia MM FAU - El-Nashar, Abdel R M AU - El-Nashar AR FAU - Shedeed, Shedeed A AU - Shedeed SA FAU - Kamel, Ihab I AU - Kamel II FAU - Aziz, Amal A AU - Aziz AA