Pancreatic fat content is associated with β-cell function and insulin resistance in Chinese type 2 diabetes subjects.
ENDOCRINE JOURNAL(2019)
Abstract
The pathogenesis of type 2 diabetes mellitus (T2DM) is characterized by insulin resistance and beta-cell dysfunction. Earlier studies reported that increased levels of pancreatic fat may lead to the development of (1-cell dysfunction and insulin resistance. The present study aimed to demonstrate the relationship between pancreatic fat content (PFC) and insulin secretion and insulin resistance in Chinese subjects with T2DM. Seventy-eight T2DM subjects and 35 non-diabetic volunteers were recruited in this study. All subjects were subjected to an oral glucose tolerance test (OGTT). We also measured PFC and liver fat content (LFC) by three-point Dixon method (3p-Dixon), and we examined the relations between PFC and (XiTT-derived parameters. T2DM subjects had higher PFC than non-diabetic subjects (p < 0.01). PFC was correlated with body mass index (BMI), liver fat content (LFC) and age in two groups, however, it was only positively associated with insulin secretion, insulin resistance, early- and late-phase insulin secretion in male T2DM subjects, but not in non-diabetic and female T2DM subjects. After adjusting for BMI, LFC and age, the association still existed (all p < 0.05). Furthermore, the relationship was more obvious in male T2DM subjects with a shorter course of disease. PFC was associated with fl-cell dysfunction and insulin resistance in subjects with T2DM and was more obvious in male T2DM subjects with shorter duration of diabetes. Therefore, PFC might represent a potential risk factor for the development of T2DM.
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Key words
Type 2 diabetes mellitus,Pancreatic fat,Three-point Dixon,Pancreatic beta-cell function
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