Peculiarities of hormonal balance and metabolic profile in pregnant women with different obesity types
Authors:   Bogomolets National Medical University, Kyiv, Tyshko К. , Gnatko О. ,   Bogomolets National Medical University, Kyiv
Published: January 2021

Maternal obesity has become one of the main factors influencing obstetric and perinatal outcomes. Obesity in pregnant women increases the risk of complications during pregnancy, childbirth and the postpartum period. The newborns of obese women also have higher rates of perinatal morbidity and an increased risk of long-term health problems. The objective: to learn hormonal and metabolic peculiarities in pregnant women with different obesity types during full-term pregnancy. Materials and methods. We examined 61 pregnant women with android type and 57 pregnant women with gynoid type of obesity at 39.6–40.6 weeks of gestation and 57 pregnant women without obesity and overweight. The concentration of estradiol, free estriol, insulin, placental lactogen, free testosterone, cortisol, dehydroepialdosterone sulfate (DHEA sulfate), and serum progesterone by enzyme-linked immunosorbent method and glucose rate by glucose-oxydase method were determined. The HOMA index was determined. Results. In pregnant women with gynoid obesity type, the level of progesterone was 41.15 (34.6–48) ng/ml, with android type – 35.7 (32.6–40.6) ng/ml and with physiological body weight 35.4 (33.2–40) ng/ml (p<0.05). While determining the concentration of placental lactogen in three groups there were no significant differences. There was a decrease (p<0,05) in the level of free estriol in groups of pregnant women with android and gynoid type of obesity in comparison with the control group, respectively 13.9 (13.1–14.9) ng/ml, 13.6 (12, 4–15.4) ng/ml and 14.7 (13.6–15.8) ng/ml. The concentration of estradiol in second group was 24 925.3 (20 206.6–30 400.5) pg/ml, which is 1.2 times (p<0.05) higher as in the control group and 1.4 times higher as in first group. In pregnant women with android-type obesity, estradiol levels were 1.2 times lower (p<0.05) compared with the control group. The concentration of cortisol in pregnant women with android type was 812.1 (599–1235.15) nmol/l, which is 2.7 times higher (p<0.05) compared to the women with gynoid type of obesity and 1.5 times higher (p<0.05) than in the control group. In pregnant women with gynoid type of obesity, 1.7 times lower (p<0.05) cortisol levels were observed in comparison with control group. The level of free testosterone was 2.4 (1.7–3.1) nmol/l in pregnant women of first group, what was higher (p<0.05) than in second group and in control group, respectively 1 (0.8–1.5) nmol/l and 1.9 (1.6–2.3) nmol/l. Pregnant women in group 1 had 2.4 times higher (p<0.05) testosterone levels compared to group 2 and 1.2 times higher (p<0.05) than in control group. In women with android type, the concentration of DHEA sulfate was 2.4 times higher (p<0.05) than in pregnant women with gynoid type and 2.1 times higher (p<0.05) compared with the control group. Pregnant women with android type of obesity have a significantly higher (p<0.05) serum insulin concentration of 67 (40–94.5) μIU / ml compared to women with gynoid type of obesity 33.3 (25.6–43) μIU/ml. When determining the glucose concentration no significant difference between three groups was found. The HOMA index in pregnant women with android type of obesity was 2.1 times higher than in pregnant women with gynoid type and 2.3 times higher than in control group (p<0.05). Conclusions. The results of a study indicate that the type of distribution of adipose tissue is important during pregnancy and childbirth because the hormonal and metabolic activity of adipose tissue in android and gynoid obesity types are different. Keywords: android type of obesity, pregnancy, gynoid type of obesity, hormonal balance, metabolic profile.