Correlation of serum zinc alpha 2 glycoprotein with blood lipid and reproductive hormone levels in men / 中华男科学杂志

Objective@#To study the changes of the serum zinc alpha 2 glycoprotein (ZAG) level in men and its relationship with blood lipid male reproductive hormones.@*METHODS@#We enrolled 297 men aged 25－ 65 years in this study, 152 with hyperlipemia (HL) and the other 145 with normal blood lipid (normal control). We divided them into four age groups (25－35 yr, 36－45 yr, 46－55 yr, and 56－65 yr) and three tertile groups (Q1, Q2, and Q3) according to the tertiles of the serum ZAG level, and examined their blood lipid, blood glucose, serum ZAG, and reproductive hormones.@*RESULTS@#The serum ZAG level was decreased gradually with the increase of age in both the HL patients and normal controls, significantly in the 36－45 and 56－65 yr age groups (P <0.05), and markedly lower in the HL than in the control men in the 25－35 and 36－45 yr groups (P <0.05). The levels of follicle-stimulating hormone (FSH) and total testosterone (TT) changed significantly with the ZAG level. The level of serum ZAG was correlated negatively with age (r = －0.58, P<0.05), waist circumference (r = －0.21, P <0.05), body mass index (BMI) (r = －0.22, P <0.05), fasting blood glucose (r = －0.16, P <0.05) , and triglyceride (TG) (r = －0.27, P <0.05) but positively with TT (r = 0.36, P <0.05). Age, BMI and TG were independent factors influencing the serum ZAG level.@*CONCLUSIONS@#The serum ZAG level is decreased with the increase of age and associated with lipid metabolism, abdominal obesity, and reproductive hormone levels in males.

Analysis of serum reproductive hormone levels in men with hyperlipemia in the urban area of Shijiazhuang / 中华男科学杂志

<p><b>Objective</b>To investigate the aging-related changes of reproductive hormones in hyperlipemia men in the urban area of Shijiazhuang and the relationship between the levels of reproductive hormones and that of blood lipid.</p><p><b>METHODS</b>We enrolled 297 males aged 25－65 years in this study, determined the levels of serum total testosterone (TT), luteinizing hormone (LH), follicle-stimulating hormone (FSH), estradiol (E2), prolactin (PRL), triglyeride (TG), total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C) and fasting blood glucose (FBG), and compared the parameters among different age groups.</p><p><b>RESULTS</b>The level of serum TT was decreased while that of FSH increased significantly in the 36－45 years group and that of LH elevated only in the 56－65 years old hyperlipemia males(P<0.05). No statistically significant changes were observed in PRL and E2 among different age groups. Spearman correlation analysis manifested that age was correlated negatively with TT, FSH, and LH (r=－0.266, 0.514, and 0.350, P<0.05), TT weakly negatively with TC and TG (r=－0.215 and －0.286, P<0.05) but weakly positively with HDL-C (r=0.281, P<0.01), and FSH and LH weakly positively with TG (r=0.282 and 0.343, P<0.05). Regression analysis showed age to be an independent influencing factor of TT, FSH and LH, while HDL-C to be that of TT.</p><p><b>CONCLUSIONS</b>The levels of serum TT and FSH gradually change with aging and low TT and high FSH and LH are closely related to hyperlipemia in adult men.</p>