Changes luteinizing hormone in aging female / Монголын Анагаах Ухаан

ABSTRACT

Introduction. Luteinizing hormone is slowly increasing in menopausal transition phase, it’s maintain to increase till early post menopause phase (Gore et al. 2004). It is related to steroid hormone’s negative feedback and estradiol’s positive feedback (Rossmanith 1995), and in addition, recently years kisspeptin-10 of hypothalamus [1]. LH is dramatically decreasing at the rather late of post menopause phase (Hall et al. 2000, Gill et al 2002). By the year 2030, more than 1.2 billion women in the world will be at least 50 years old. This increasing proportion of the female population will be experiencing the menopausal transition with its accompanying physiology and pathophysiology [2]. Recently researchers more focused to study the comparative analysis of hormones at the menopause phase in different ethnic groups. This kind of study have not implemented in our country yet.Goal.Determination of serum LH level changes in relation to aging. Materials and Methods. In this study were involved 161 healthy Mongolian women aged above 35 years. Subjects were randomly selected and undergone physical examination by geriatrician. People, who are receiving hormone replacement therapy, using in proper use of alcohol, injured and had survey, were excluded from our study. Blood samples were collected in the morning 8.30-10.30 AM, after a night fasting. Blood was separated immediately by centrifugation, then obtained sera were stored at -20 0C until assayed by ELISA kit from United Biotech CoLTD, USA, which sensitivity is 1mlU/ml. Statistical analyses have been performed by statistical software SPSS 17, using ANOVA, Pearson correlation.Results. Average level of LH was 29.95±3.31mIU/ml, 15.87±5.86mIU/ml at the age 35-45, 33.12±7.1mIU/ml at the age 46-55, 15.87±ImU/ml at the age 56-65, 38.15±6.6mIU/ml at the age 66-75, and 56.42±11.1mlIU/ml over 76 age in the all participants, considering by person correlation coefficient, between age and LH are moderate and direct correlation (r=0.264, ð 0.003).Conclusion. Average level of LH was 29.95±3.31mIU/ml in women aged over 35. Considering by person correlation coefficient, between age and LH are moderate and direct correlation (r=0.264, ð 0.003). LH increases with aging till round 70 and decreases after 70 years.