Increased soluble leptin receptor levels in morbidly obese patients with insulin resistance and nonalcoholic fatty liver disease

Valentina Medici, Mohamed R Ali, Suk Seo, Christopher A. Aoki, Lorenzo Rossaro, Kyoungmi Kim, Will D. Fuller, Tamas J Vidovszky, William Smith, Xiaosong Jiang, Kalyani Maganti, Peter J Havel, Amit Kamboj, Rajendra Ramsamooj, Natalia J Torok

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The adipocyte hormone, leptin has been demonstrated to have profibrogenic actions in vitro and in animal models. However, no correlation was found between plasma leptin levels and fibrosis stage in humans. Thus, our aim was to study whether soluble leptin receptor (SLR) or free leptin index (FLI; calculated as the ratio of leptin to SLR), may correlate better with the features of metabolic syndrome and with the histological grade and stage of nonalcoholic fatty liver disease (NAFLD)/nonalcoholic steatohepatitis (NASH). We studied a population (n = 104) of morbidly obese patients undergoing bariatric surgery. Data including BMI, type 2 diabetes mellitus, hypertension, and hyperlipidemia were obtained. Plasma fasting leptin and SLR, fasting glucose and insulin were measured, and homeostasis model of assessment insulin resistance (HOMA IR) index and FLI were calculated. All patients had intraoperative liver biopsies. Leptin levels correlated with the BMI. The multiple regression analysis indicated that increasing HOMA and decreasing FLI were predictors of steatosis in the liver (P <0.0003). SLR levels were positively correlated with the presence of diabetes mellitus and the stage of fibrosis. In conclusion, increased SLR levels in morbidly obese patients with diabetes are correlated with the stage of liver fibrosis, and may reflect progressive liver disease.

Original languageEnglish (US)
Pages (from-to)2268-2273
Number of pages6
JournalObesity
Volume18
Issue number12
DOIs
StatePublished - Dec 2010

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Leptin Receptors
Leptin
Insulin Resistance
Fasting
Fibrosis
Bariatric Surgery
Fatty Liver
Hyperlipidemias
Adipocytes
Liver Cirrhosis
Type 2 Diabetes Mellitus
Non-alcoholic Fatty Liver Disease
Liver Diseases
Diabetes Mellitus
Homeostasis
Animal Models
Regression Analysis
Hormones
Insulin
Hypertension

ASJC Scopus subject areas

  • Endocrinology
  • Medicine (miscellaneous)
  • Endocrinology, Diabetes and Metabolism
  • Nutrition and Dietetics

Cite this

Increased soluble leptin receptor levels in morbidly obese patients with insulin resistance and nonalcoholic fatty liver disease. / Medici, Valentina; Ali, Mohamed R; Seo, Suk; Aoki, Christopher A.; Rossaro, Lorenzo; Kim, Kyoungmi; Fuller, Will D.; Vidovszky, Tamas J; Smith, William; Jiang, Xiaosong; Maganti, Kalyani; Havel, Peter J; Kamboj, Amit; Ramsamooj, Rajendra; Torok, Natalia J.

In: Obesity, Vol. 18, No. 12, 12.2010, p. 2268-2273.

Research output: Contribution to journalArticle

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