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Subcutaneous lipectomy causes a metabolic syndrome in hamsters
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| Zeitschriftentitel: | American Journal of Physiology-Regulatory, Integrative and Comparative Physiology |
|---|---|
| Personen und Körperschaften: | , , , |
| In: | American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 279, 2000, 3, S. R936-R943 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Physiological Society
|
| Schlagwörter: |
| author_facet |
Weber, R. V. Buckley, M. C. Fried, S. K. Kral, J. G. Weber, R. V. Buckley, M. C. Fried, S. K. Kral, J. G. |
|---|---|
| author |
Weber, R. V. Buckley, M. C. Fried, S. K. Kral, J. G. |
| spellingShingle |
Weber, R. V. Buckley, M. C. Fried, S. K. Kral, J. G. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology Subcutaneous lipectomy causes a metabolic syndrome in hamsters Physiology (medical) Physiology |
| author_sort |
weber, r. v. |
| spelling |
Weber, R. V. Buckley, M. C. Fried, S. K. Kral, J. G. 0363-6119 1522-1490 American Physiological Society Physiology (medical) Physiology http://dx.doi.org/10.1152/ajpregu.2000.279.3.r936 <jats:p>The insulin resistance syndrome X is related to excess intra-abdominal adipose tissue. With lipectomy of >50% of subcutaneous adipose tissue (SQAT) in nonhibernating, adult female Syrian hamsters on high-fat (HF; 50 calorie%) diet and measurements of oral glucose tolerance, oral [<jats:sup>14</jats:sup>C]oleic acid disposal, serum triglycerides, serum leptin, liver fat, perirenal (PR) adipose tissue cellularity, and body composition, we studied the role of SQAT. Sham-operated (S) animals on HF or low-fat (LF; 12.5 calorie%) diets served as controls. After 3 mo there was no visible regrowth of SQAT but HF diet led to similar levels of body weight and body fat in lipectomized and sham-operated animals. Lipectomized (L) animals had more intra-abdominal fat as a percentage of total body fat, higher insulinemic index, a strong trend toward increased liver fat content, and markedly elevated serum triglycerides compared with S-HF and S-LF. Liver and PR adipose tissue uptake of fatty acid were similar in L-HF and S-HF but reduced vs. S-LF, and were inversely correlated with liver fat content and insulin sums during the oral glucose tolerance test. In summary, lipectomy of SQAT led to compensatory fat accumulation implying regulation of total body fat mass. In conjunction with HF diet these lipectomized hamsters developed a metabolic syndrome with significant hypertriglyceridemia, relative increase in intra-abdominal fat, and insulin resistance. We propose that SQAT, via disposal and storage of excess ingested energy, acts as a metabolic sink and protects against the metabolic syndrome of obesity.</jats:p> Subcutaneous lipectomy causes a metabolic syndrome in hamsters American Journal of Physiology-Regulatory, Integrative and Comparative Physiology |
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| title |
Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_unstemmed |
Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_full |
Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_fullStr |
Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_full_unstemmed |
Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_short |
Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_sort |
subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| topic |
Physiology (medical) Physiology |
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http://dx.doi.org/10.1152/ajpregu.2000.279.3.r936 |
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2000 |
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R936-R943 |
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<jats:p>The insulin resistance syndrome X is related to excess intra-abdominal adipose tissue. With lipectomy of >50% of subcutaneous adipose tissue (SQAT) in nonhibernating, adult female Syrian hamsters on high-fat (HF; 50 calorie%) diet and measurements of oral glucose tolerance, oral [<jats:sup>14</jats:sup>C]oleic acid disposal, serum triglycerides, serum leptin, liver fat, perirenal (PR) adipose tissue cellularity, and body composition, we studied the role of SQAT. Sham-operated (S) animals on HF or low-fat (LF; 12.5 calorie%) diets served as controls. After 3 mo there was no visible regrowth of SQAT but HF diet led to similar levels of body weight and body fat in lipectomized and sham-operated animals. Lipectomized (L) animals had more intra-abdominal fat as a percentage of total body fat, higher insulinemic index, a strong trend toward increased liver fat content, and markedly elevated serum triglycerides compared with S-HF and S-LF. Liver and PR adipose tissue uptake of fatty acid were similar in L-HF and S-HF but reduced vs. S-LF, and were inversely correlated with liver fat content and insulin sums during the oral glucose tolerance test. In summary, lipectomy of SQAT led to compensatory fat accumulation implying regulation of total body fat mass. In conjunction with HF diet these lipectomized hamsters developed a metabolic syndrome with significant hypertriglyceridemia, relative increase in intra-abdominal fat, and insulin resistance. We propose that SQAT, via disposal and storage of excess ingested energy, acts as a metabolic sink and protects against the metabolic syndrome of obesity.</jats:p> |
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| author | Weber, R. V., Buckley, M. C., Fried, S. K., Kral, J. G. |
| author_facet | Weber, R. V., Buckley, M. C., Fried, S. K., Kral, J. G., Weber, R. V., Buckley, M. C., Fried, S. K., Kral, J. G. |
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| description | <jats:p>The insulin resistance syndrome X is related to excess intra-abdominal adipose tissue. With lipectomy of >50% of subcutaneous adipose tissue (SQAT) in nonhibernating, adult female Syrian hamsters on high-fat (HF; 50 calorie%) diet and measurements of oral glucose tolerance, oral [<jats:sup>14</jats:sup>C]oleic acid disposal, serum triglycerides, serum leptin, liver fat, perirenal (PR) adipose tissue cellularity, and body composition, we studied the role of SQAT. Sham-operated (S) animals on HF or low-fat (LF; 12.5 calorie%) diets served as controls. After 3 mo there was no visible regrowth of SQAT but HF diet led to similar levels of body weight and body fat in lipectomized and sham-operated animals. Lipectomized (L) animals had more intra-abdominal fat as a percentage of total body fat, higher insulinemic index, a strong trend toward increased liver fat content, and markedly elevated serum triglycerides compared with S-HF and S-LF. Liver and PR adipose tissue uptake of fatty acid were similar in L-HF and S-HF but reduced vs. S-LF, and were inversely correlated with liver fat content and insulin sums during the oral glucose tolerance test. In summary, lipectomy of SQAT led to compensatory fat accumulation implying regulation of total body fat mass. In conjunction with HF diet these lipectomized hamsters developed a metabolic syndrome with significant hypertriglyceridemia, relative increase in intra-abdominal fat, and insulin resistance. We propose that SQAT, via disposal and storage of excess ingested energy, acts as a metabolic sink and protects against the metabolic syndrome of obesity.</jats:p> |
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| spelling | Weber, R. V. Buckley, M. C. Fried, S. K. Kral, J. G. 0363-6119 1522-1490 American Physiological Society Physiology (medical) Physiology http://dx.doi.org/10.1152/ajpregu.2000.279.3.r936 <jats:p>The insulin resistance syndrome X is related to excess intra-abdominal adipose tissue. With lipectomy of >50% of subcutaneous adipose tissue (SQAT) in nonhibernating, adult female Syrian hamsters on high-fat (HF; 50 calorie%) diet and measurements of oral glucose tolerance, oral [<jats:sup>14</jats:sup>C]oleic acid disposal, serum triglycerides, serum leptin, liver fat, perirenal (PR) adipose tissue cellularity, and body composition, we studied the role of SQAT. Sham-operated (S) animals on HF or low-fat (LF; 12.5 calorie%) diets served as controls. After 3 mo there was no visible regrowth of SQAT but HF diet led to similar levels of body weight and body fat in lipectomized and sham-operated animals. Lipectomized (L) animals had more intra-abdominal fat as a percentage of total body fat, higher insulinemic index, a strong trend toward increased liver fat content, and markedly elevated serum triglycerides compared with S-HF and S-LF. Liver and PR adipose tissue uptake of fatty acid were similar in L-HF and S-HF but reduced vs. S-LF, and were inversely correlated with liver fat content and insulin sums during the oral glucose tolerance test. In summary, lipectomy of SQAT led to compensatory fat accumulation implying regulation of total body fat mass. In conjunction with HF diet these lipectomized hamsters developed a metabolic syndrome with significant hypertriglyceridemia, relative increase in intra-abdominal fat, and insulin resistance. We propose that SQAT, via disposal and storage of excess ingested energy, acts as a metabolic sink and protects against the metabolic syndrome of obesity.</jats:p> Subcutaneous lipectomy causes a metabolic syndrome in hamsters American Journal of Physiology-Regulatory, Integrative and Comparative Physiology |
| spellingShingle | Weber, R. V., Buckley, M. C., Fried, S. K., Kral, J. G., American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, Subcutaneous lipectomy causes a metabolic syndrome in hamsters, Physiology (medical), Physiology |
| title | Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_full | Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_fullStr | Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_full_unstemmed | Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_short | Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_sort | subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| title_unstemmed | Subcutaneous lipectomy causes a metabolic syndrome in hamsters |
| topic | Physiology (medical), Physiology |
| url | http://dx.doi.org/10.1152/ajpregu.2000.279.3.r936 |