Hepatic triglyceride content and its relation to body adiposity:: a magnetic resonance imaging and proton magnetic resonance spectroscopy study

被引:260
作者
Thomas, EL
Hamilton, G
Patel, N
O'Dwyer, R
Doré, CJ
Goldin, RD
Bell, JD
Taylor-Robinson, SD
机构
[1] Hammersmith Hosp, Imperial Coll London, MRC Clin Sci Ctr, Robert Steiner MR Unit,Imaging Sci Dept, London, England
[2] Hammersmith Hosp, Imperial Coll London, Fac Med, Div Med Med A, London, England
[3] MRC, Clin Trials Unit, London, England
[4] St Marys Hosp, Dept Histopathol, London, England
基金
英国医学研究理事会;
关键词
D O I
10.1136/gut.2003.036566
中图分类号
R57 [消化系及腹部疾病];
学科分类号
摘要
Background: Hepatic steatosis is associated with obesity and type II diabetes. Proton magnetic resonance spectroscopy (H-1 MRS) is a non-invasive method for measurement of tissue fat content, including intrahepatocellular lipids (IHCL) and intramyocellular lipids (IMCL). Patients and methods: We used H-1 MRS and whole body magnetic resonance imaging (MRI) to assess the relationship between IHCL accumulation, total body adipose tissue (AT) content/distribution, and IMCL content in 11 subjects with biopsy proven hepatic steatosis and 23 normal volunteers. Results: IHCL signals were detectable in all subjects but were significantly greater in hepatic steatosis (geometric mean (GM) 11.5 (interquartile range (IQR) 7.0-39.0)) than in normal volunteers (GM 2.7 (IQR 0.7-9.3); p = 0.02). In the study group as a whole, IHCL levels were significantly greater in overweight compared with lean subjects (body mass index (BMI) >25 kg/m(2) (n = 23): GM 7.7 (IQR 4.0-28.6) v BMI <25 kg/m(2) (n = 11): GM 1.3 (IQR 0.3-3.6; p = 0.004)). There was a significant association between IHCL content and indices of overall obesity (expressed as a percentage of body weight) for total body fat (p = 0.001), total subcutaneous AT (p = 0.007), and central obesity (subcutaneous abdominal AT (p = 0.001) and intra-abdominal AT (p = 0.001)), after allowing for sex and age. No correlation between IHCL content and IMCL was observed. A significant correlation was observed between serum alanine aminotransferase and liver fat content (r = 0.57, p = 0.006). Conclusions: Our results suggest that hepatic steatosis appears to be closely related to body adiposity, especially central obesity. MRS may be a useful method for monitoring IHCL in future interventional studies.
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页码:122 / 127
页数:6
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