Bariatric procedures offer sustained and significant weight reduction with the potential to effect general patient health, comorbid conditions, quality of life and the healthcare system. A Bariatric Surgery Clinical Research Consortium (BSCRC) wilt provide important prospective information about the true impact of the procedure on patients and opportunities to better explore the physiologic mechanisms that result in post-surgical weight loss. The BSCRC will prospectively collect clinical, demographic, epidemiological, laboratory and histological information. In addition to this database the BSCRC will complete the following studies: 1. A cross-sectional examination of the epidemiology of non-alcoholic steatohepatitis (NASH) in patients undergoing bariatric surgery and a prospective evaluation of the effect of surgically induced weight loss on the severity NASH and cellular markers of cytotoxic activity. There is a need for epidemiologic information about the prevalence, risk factors for, and impact of fatty liver disease in patients undergoing bariatric surgery. We propose a study to evaluate liver histology in a large group of patients undergoing bariatric procedures. Patients with evidence of NASH by biopsy will undergo subsequent liver biopsy at one year to determine if NASH improves with rapid weight loss. Patients with NASH who improve after weight loss represent an important model for evaluating the cellular mechanisms that are involved in the development of NASH. This study will evaluate markers of oxidative stress and hepatic mitochondrial structure to determine their relationship to NASH during and after rapid, surgical weight loss. 2. A prospective evaluation of the relationship between ghrelin, PYY3-36, appetite and weight loss outcomes after gastric bypass. Ghrelin and PYY3-36 are gut-derived peptides that are involved in energy homeostasis principally through their effect on appetite. We propose a prospective study to determine the relationship of ghrelin and weight loss after gastric bypass and to determine if the degree of ghrelin suppression is correlated to hunger suppression and/or the amount of weight lost. This study will determine if inclusion of ghrelin producing cells in the gastric pouch is correlated to worsened weight loss outcomes. Lastly the study will begin to evaluate the relationship of PYY3-36 and ghrelin and determine if it is altered by or in response to the physiologic changes associated with gastric bypass.

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Research Project--Cooperative Agreements (U01)
Project #
5U01DK066568-04
Application #
7122423
Study Section
Special Emphasis Panel (ZDK1-GRB-4 (O1))
Program Officer
Miles, Carolyn
Project Start
2003-09-30
Project End
2008-08-31
Budget Start
2006-09-01
Budget End
2007-08-31
Support Year
4
Fiscal Year
2006
Total Cost
$405,545
Indirect Cost
Name
University of Washington
Department
Surgery
Type
Schools of Medicine
DUNS #
605799469
City
Seattle
State
WA
Country
United States
Zip Code
98195
Courcoulas, Anita P; King, Wendy C; Belle, Steven H et al. (2018) Seven-Year Weight Trajectories and Health Outcomes in the Longitudinal Assessment of Bariatric Surgery (LABS) Study. JAMA Surg 153:427-434
Field, Alison E; Inge, Thomas H; Belle, Steven H et al. (2018) Association of Obesity Subtypes in the Longitudinal Assessment of Bariatric Surgery Study and 3-Year Postoperative Weight Change. Obesity (Silver Spring) 26:1931-1937
O'Rourke, Robert W; Johnson, Geoffrey S; Purnell, Jonathan Q et al. (2018) Serum biomarkers of inflammation and adiposity in the LABS cohort: associations with metabolic disease and surgical outcomes. Int J Obes (Lond) :
Purnell, Jonathan Q; Johnson, Geoffrey S; Wahed, Abdus S et al. (2018) Prospective evaluation of insulin and incretin dynamics in obese adults with and without diabetes for 2 years after Roux-en-Y gastric bypass. Diabetologia 61:1142-1154
King, Wendy C; Hinerman, Amanda S; Belle, Steven H et al. (2018) Comparison of the Performance of Common Measures of Weight Regain After Bariatric Surgery for Association With Clinical Outcomes. JAMA 320:1560-1569
Friedman, Allon N; Wahed, Abdus S; Wang, Junyao et al. (2018) Effect of Bariatric Surgery on CKD Risk. J Am Soc Nephrol 29:1289-1300
Menke, Marie N; King, Wendy C; White, Gretchen E et al. (2017) Contraception and Conception After Bariatric Surgery. Obstet Gynecol 130:979-987
King, Wendy C; Chen, Jia-Yuh; Courcoulas, Anita P et al. (2017) Alcohol and other substance use after bariatric surgery: prospective evidence from a U.S. multicenter cohort study. Surg Obes Relat Dis 13:1392-1402
King, Wendy C; Chen, Jia-Yuh; Belle, Steven H et al. (2017) Use of prescribed opioids before and after bariatric surgery: prospective evidence from a U.S. multicenter cohort study. Surg Obes Relat Dis 13:1337-1346
Alfonso-Cristancho, Rafael; King, Wendy C; Mitchell, James E et al. (2016) Longitudinal Evaluation of Work Status and Productivity After Bariatric Surgery. JAMA 316:1595-1597

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