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Farahmand A, Kerr JM, Lawler HM. MAXIMIZING THE UTILITY OF THE 72-HOUR FAST IN EVALUATING HYPOGLYCEMIA. Endocr Pract 2021; 27:80-81. [PMID: 33475507 DOI: 10.1016/j.eprac.2020.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Abtin Farahmand
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO 80014
| | - Janice M Kerr
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO 80014
| | - Helen M Lawler
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado, Anschutz Medical Campus, Aurora, CO 80014
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Affiliation(s)
- Elisa Rogowitz
- University of Colorado, Division of Endocrinology, Metabolism, and Diabetes, 12801 E. 17th Ave., MS 8106, Aurora, CO, 80045, USA
| | | | - Helen M Lawler
- University of Colorado, Division of Endocrinology, Metabolism, and Diabetes, 12801 E. 17th Ave., MS 8106, Aurora, CO, 80045, USA.
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Abstract
As the obesity epidemic worsens, more people are opting for weight-loss surgery, including gastric bypass. Of the possible complications associated with this procedure, hypoglycemia secondary to hyperinsulinemia is becoming a more common and therefore more relevant problem.
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Affiliation(s)
- Richard Millstein
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado School of Medicine, Aurora, CO, USA.
| | - Helen M Lawler
- Assistant Professor of Medicine, Division of Endocrinology, Metabolism, and Diabetes, University of Colorado School of Medicine, Aurora, CO, USA
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Lawler HM, Underkofler CM, Kern PA, Erickson C, Bredbeck B, Rasouli N. Adipose Tissue Hypoxia, Inflammation, and Fibrosis in Obese Insulin-Sensitive and Obese Insulin-Resistant Subjects. J Clin Endocrinol Metab 2016; 101:1422-8. [PMID: 26871994 PMCID: PMC4880157 DOI: 10.1210/jc.2015-4125] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 02/10/2016] [Indexed: 12/19/2022]
Abstract
CONTEXT A substantial number of obese individuals are relatively insulin sensitive and the etiology for this variation remains unknown. OBJECTIVE The primary objective was to detect factors in adipose tissue differentiating obese insulin-sensitive (OBIS) from obese insulin-resistant (OBIR) individuals and investigate whether adipose tissue hypoxia is a contributing factor in the pathogenesis of insulin resistance. DESIGN AND SETTING This was a cross-sectional study in the general community. PARTICIPANTS Subjects consisted of nondiabetic OBIS and OBIR subjects with similar body mass index, age, and total body fat but different insulin sensitivity index as well as lean insulin-sensitive subjects. INTERVENTIONS(S) There were no interventions. MAIN OUTCOME MEASURE(S) We examined adipocytokines and the expression of candidate genes regulating hypoxia, inflammation, and lipogenesis in adipose tissue and adipose tissue oxygenation. RESULTS OBIS subjects had increased plasma adiponectin but similar plasma TNFα and leptin levels as compared with OBIR subjects. Genes regulating inflammation (CD68, MCP1, scavenger receptor A, and oxidized LDL receptor 1) were increased by 40%–60% (P < .05) in OBIR vs OBIS cohorts. In addition, genes involved in extracellular matrix formation such as collagen VI and MMP7 were up-regulated by 43% and 78% (P < .05), respectively, in OBIR vs OBIS. The expression of HIF1α and VEGF gene expression was increased by 37% and 52%, respectively, in OBIR vs OBIS (P < .01). Despite the differential expression in hypoxia-related genes, adipose tissue oxygenation measured by a Licox oxygen probe was not different between OBIS and OBIR subjects, but it was higher in lean subjects as compared with obese subjects. CONCLUSIONS We confirmed that adipose tissue inflammation and fibrosis play an important role in the pathogenesis of insulin resistance independent of obesity in humans. Whether hypoxia is simply a consequence of adipose tissue expansion or is related to the pathogenesis of obesity-induced insulin resistance is yet to be understood.
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Affiliation(s)
- Helen M Lawler
- Division of Endocrinology, Metabolism, and Diabetes (H.M.L., C.M.U., C.E., B.B., N.R.), University of Colorado, School of Medicine, Aurora, Colorado 80045; University of Kentucky and the Barnstable Brown Diabetes and Obesity Center (P.A.K.), Lexington, Kentucky 40536; and Veterans Affairs Eastern Colorado Health Care System (N.R.), Denver, Colorado 80262
| | - Chantal M Underkofler
- Division of Endocrinology, Metabolism, and Diabetes (H.M.L., C.M.U., C.E., B.B., N.R.), University of Colorado, School of Medicine, Aurora, Colorado 80045; University of Kentucky and the Barnstable Brown Diabetes and Obesity Center (P.A.K.), Lexington, Kentucky 40536; and Veterans Affairs Eastern Colorado Health Care System (N.R.), Denver, Colorado 80262
| | - Philip A Kern
- Division of Endocrinology, Metabolism, and Diabetes (H.M.L., C.M.U., C.E., B.B., N.R.), University of Colorado, School of Medicine, Aurora, Colorado 80045; University of Kentucky and the Barnstable Brown Diabetes and Obesity Center (P.A.K.), Lexington, Kentucky 40536; and Veterans Affairs Eastern Colorado Health Care System (N.R.), Denver, Colorado 80262
| | - Christopher Erickson
- Division of Endocrinology, Metabolism, and Diabetes (H.M.L., C.M.U., C.E., B.B., N.R.), University of Colorado, School of Medicine, Aurora, Colorado 80045; University of Kentucky and the Barnstable Brown Diabetes and Obesity Center (P.A.K.), Lexington, Kentucky 40536; and Veterans Affairs Eastern Colorado Health Care System (N.R.), Denver, Colorado 80262
| | - Brooke Bredbeck
- Division of Endocrinology, Metabolism, and Diabetes (H.M.L., C.M.U., C.E., B.B., N.R.), University of Colorado, School of Medicine, Aurora, Colorado 80045; University of Kentucky and the Barnstable Brown Diabetes and Obesity Center (P.A.K.), Lexington, Kentucky 40536; and Veterans Affairs Eastern Colorado Health Care System (N.R.), Denver, Colorado 80262
| | - Neda Rasouli
- Division of Endocrinology, Metabolism, and Diabetes (H.M.L., C.M.U., C.E., B.B., N.R.), University of Colorado, School of Medicine, Aurora, Colorado 80045; University of Kentucky and the Barnstable Brown Diabetes and Obesity Center (P.A.K.), Lexington, Kentucky 40536; and Veterans Affairs Eastern Colorado Health Care System (N.R.), Denver, Colorado 80262
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