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Increased insulin resistance and fat cell lipolysis in obese but not lean women with a high waist/hip ratio
Author(s) -
LANDIN K.,
LÖNNROTH P.,
KROTKIEWSKI M.,
HOLM G.,
SMITH U.
Publication year - 1990
Publication title -
european journal of clinical investigation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.164
H-Index - 107
eISSN - 1365-2362
pISSN - 0014-2972
DOI - 10.1111/j.1365-2362.1990.tb01897.x
Subject(s) - lipolysis , medicine , endocrinology , insulin resistance , abdominal obesity , waist–hip ratio , insulin , obesity , waist , adipose tissue
. Increased lipolysis in abdominal adipocytes has been suggested to be of importance for the insulin resistance typical for abdominal obesity. In order to differentiate between fat distribution, measured as waist/hip ratio (WHR), and amount of body fat, glucose disposal during a euglycaemic clamp as well as lipolysis in isolated cells from abdominal and gluteo‐femoral regions were studied in 20 obese and 20 lean postmenopausal women with a high ( n = 10) and low ( n = 10) WHR, respectively. The lipolytic response was increased in cells from obese women irrespective of region. Furthermore, lipolysis was enhanced in abdominal compared with the gluteo‐femoral cells in obese women with a high WHR. Fasting blood glucose and insulin were increased in both groups of obese women while the degree of insulin resistance was most pronounced in the obese women with a high WHR. It is concluded that increased body fat is associated with both insulin resistance and increased lipolysis, and that this relationship is stronger in the presence of a high WHR. A high WHR may increase the expression of obesity as a risk for insulin resistance and this may be mediated through an increased lipolytic rate.