Serotonin Level and Lipid Metabolism Indices in Patients with Irritable Bowel Syndrome with Constipation Against the Background of Various Degrees of Obesity


irritable bowel syndrome with constipation

How to Cite

Mishchuk, V., & Grygoruk, G. (2018). Serotonin Level and Lipid Metabolism Indices in Patients with Irritable Bowel Syndrome with Constipation Against the Background of Various Degrees of Obesity. Galician Medical Journal, 25(2).


Recent research shows that the number of diseases associated with obesity has been increasing. In obese persons, association with functional constipation is noted in 24.0% of cases, and obesity is recorded in 60.0% of patients with functional constipation. Among the possible mechanisms for the development of such a combination are changes in serotonin level in the blood, although the existing data are ambiguous and sometimes controversial.

The objective of the study is to investigate the changes in serotonin level in the blood of obese patients in combination with constipation and its relationship with the lipid profile of the blood.

Materials and methods. 63 patients with obesity in combination with irritable bowel syndrome with constipation (IBSc), 24 patients with normal body mass index and 10 practically healthy people were examined. 25 patients with obesity and constipation had a body mass index of 32.8±0.24kg/m2, 28 patients – 37.8±kg/m2, and 10 patients – 42.6±0.5kg/m2. In patients with irritable bowel syndrome without obesity, the body mass index was 21.7±0.4kg/m2. The blood serotonin level and lipid profile of the blood was determined in all patients.

Results. It was deermined that in case of irritable bowel syndrome with constipation, serotonin level in the blood was reduced. In obesity with IBSc, the concentration of serotonin, on the contrary, was elevated. All patients with IBSc and obesity were marked an elevated level of total cholesterol and triglycerides. A direct correlation between high levels of triglycerides and serotonin concentration in serum of such comorbid patients was detected. The increase in the degree of obesity in the presence of IBSc was accompanied by a decrease in the concentration of cholesterol of high density lipoprotein. Patients with IBSc without excessive body weight had no such deviations.

Conclusions. With an increase in the degree of obesity, serotonin level in the blood increases and the lipid blood spectrum worsens.


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