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| Name | Class |
|---|---|
| Sanford-Burnham Medical Research Institute | OTHER |
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The purpose of this study is to collect data to help researchers better understand the various causes of obesity, which may lead to the development of new obesity treatment options.
Obesity is major metabolic health concern and the potential beneficial effects of natriuretic peptides, specifically B-type natriuretic peptide (BNP) on adipocyte biology, energy expenditure and body weight could be of great significance. This study will provide insight into the mechanisms of dysregulation of the natriuretic peptides system in obesity and will contribute to delineate the roles and the clinical importance of BNP in the treatment of obesity.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Saline | Placebo Comparator | Saline infusion |
|
| Nesiritide 1.0 | Active Comparator | Nesiritide infused for 90 minute, initially at 0.5 pmol/kg/min and doubled every 15 minutes to achieve a target infusion rate of 1.0 pmol/kg/min, followed by a steady state infusion at the target rate for an additional 150 minutes (4 hours total). |
|
| Nesiritide 2.0 | Active Comparator | Nesiritide infused for 90 minute, initially at 0.5 pmol/kg/min and doubled every 15 minutes to achieve a target infusion rate of 2.0 pmol/kg/min, followed by a steady state infusion at the target rate for an additional 150 minutes (4 hours total). |
|
| Nesiritide 4.0 | Active Comparator | Nesiritide infused for 90 minute, initially at 0.5 pmol/kg/min and doubled every 15 minutes to achieve a target infusion rate of 4.0 pmol/kg/min, followed by a steady state infusion at the target rate for an additional 150 minutes (4 hours total). |
|
| Nesiritide 8.0 | Active Comparator | Nesiritide infused for 90 minute, initially at 0.5 pmol/kg/min and doubled every 15 minutes to achieve a target infusion rate of 8.0 pmol/kg/min, followed by a steady state infusion at the target rate for an additional 150 minutes (4 hours total). |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Nesiritide | Drug |
| ||
| Saline |
| Measure | Description | Time Frame |
|---|---|---|
| Difference in level of B-type Natriuretic Peptide (BNP) | Blood samples will be obtained at baseline, during the infusion and after the termination of the infusion for measurement of levels of recombinant human BNP (rhBNP) and N-terminal pro-brain natriuretic peptide (NTpro-BNP). | Days -2, 7, 14 |
| Measure | Description | Time Frame |
|---|---|---|
| Differences in the expression of NPRC | Natriuretic peptides Type-A and Type-C (NPRA,NPRC) expression will be measured by RT-PCR in subcutaneous abdominal adipose tissue samples obtained by percutaneous biopsy prior to infusion of rhBNP and related to the Metabolic Clearance Rate (MCR) for BNP | Day 7 |
| Determine whether short term infusion of rhBNP increases metabolic rate and/or fat oxidation |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Richard E. Pratley, MD | AdventHealth | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Translational Research Institute for Metabolism and Diabetes | Orlando | Florida | 32804 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 15313941 | Background | Lloyd-Jones DM, Wang TJ, Leip EP, Larson MG, Levy D, Vasan RS, D'Agostino RB, Massaro JM, Beiser A, Wolf PA, Benjamin EJ. Lifetime risk for development of atrial fibrillation: the Framingham Heart Study. Circulation. 2004 Aug 31;110(9):1042-6. doi: 10.1161/01.CIR.0000140263.20897.42. Epub 2004 Aug 16. | |
| 16380542 | Background |
| Label | URL |
|---|---|
| Translational Research Institute for Metabolism and Diabetes | View source |
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| ID | Term |
|---|---|
| D009765 | Obesity |
| D002318 | Cardiovascular Diseases |
| D006973 | Hypertension |
| D003920 | Diabetes Mellitus |
| ID | Term |
|---|---|
| D050177 | Overweight |
| D044343 | Overnutrition |
| D009748 | Nutrition Disorders |
| D009750 | Nutritional and Metabolic Diseases |
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| ID | Term |
|---|---|
| D020097 | Natriuretic Peptide, Brain |
| D012965 | Sodium Chloride |
| ID | Term |
|---|---|
| D045265 | Natriuretic Peptides |
| D036361 | Peptide Hormones |
| D006728 | Hormones |
| D006730 | Hormones, Hormone Substitutes, and Hormone Antagonists |
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|
| Drug |
|
Energy expenditure and substrate oxidation rates will be measured for 30 min at baseline, prior to the infusion of BNP, then continuously during the rhBNP infusion in a 3200 Liters Flex Room Calorimeter respiratory chambers. |
| Day 7 |
| determine whether short term infusion of rhBNP alters gene expression in subcutaneous adipose tissue and skeletal muscle in a pattern consistent with activation of thermogenic pathways | Adipose tissue will be obtained from subcutaneous abdominal sites and skeletal muscle from the vastus lateralis by percutaneous biopsy prior to and after the infusion of rhBNP. The expression of Uncoupling Protein 1 (UCP1), Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1 α (PGC-1α), cytochrome c and PR domain containing 16 (PRDM16) (a significant factor in brown adipogenesis) will be measured by Reverse transcription polymerase chain reaction (RT-PCR). | Day 7 |
| Difference in responses of lean and obese subjects | Blood pressure and heart rate will be monitored at 10 minute intervals with an automated blood pressure cuff to measure physiological response and to monitor hemodynamic status and safety. Fractional sodium excretion, cGMP and creatinine, and total urine output in response to the rhBNP infusion will be compared in lean and obese subjects. Blood samples will be obtained at baseline, during the infusion and after termination of the infusion for measurement of cyclic Guanosine 3´,5´-Cyclic Monophosphate (cGMP), Plasma Renin Activity (PRA), Aldosterone (ALD), Renin (REN), NE, glucose, insulin, Non-essential fatty acid (NEFA), glycerol, adiponectin, C-Reactive Protein (CRP), Tumor Necrosis Factor- α (TNF-α) and other cytokines/chemokines. | Days -2, 7, 14 |
| Poirier P, Giles TD, Bray GA, Hong Y, Stern JS, Pi-Sunyer FX, Eckel RH; American Heart Association; Obesity Committee of the Council on Nutrition, Physical Activity, and Metabolism. Obesity and cardiovascular disease: pathophysiology, evaluation, and effect of weight loss: an update of the 1997 American Heart Association Scientific Statement on Obesity and Heart Disease from the Obesity Committee of the Council on Nutrition, Physical Activity, and Metabolism. Circulation. 2006 Feb 14;113(6):898-918. doi: 10.1161/CIRCULATIONAHA.106.171016. Epub 2005 Dec 27. |
| 15181019 | Background | Stein CJ, Colditz GA. The epidemic of obesity. J Clin Endocrinol Metab. 2004 Jun;89(6):2522-5. doi: 10.1210/jc.2004-0288. |
| 14749502 | Background | Aneja A, El-Atat F, McFarlane SI, Sowers JR. Hypertension and obesity. Recent Prog Horm Res. 2004;59:169-205. doi: 10.1210/rp.59.1.169. |
| 17414649 | Background | Mancia G, Bousquet P, Elghozi JL, Esler M, Grassi G, Julius S, Reid J, Van Zwieten PA. The sympathetic nervous system and the metabolic syndrome. J Hypertens. 2007 May;25(5):909-20. doi: 10.1097/HJH.0b013e328048d004. |
| 10440591 | Background | Goodfriend TL, Kelley DE, Goodpaster BH, Winters SJ. Visceral obesity and insulin resistance are associated with plasma aldosterone levels in women. Obes Res. 1999 Jul;7(4):355-62. doi: 10.1002/j.1550-8528.1999.tb00418.x. |
| 8957740 | Background | Sarzani R, Dessi-Fulgheri P, Paci VM, Espinosa E, Rappelli A. Expression of natriuretic peptide receptors in human adipose and other tissues. J Endocrinol Invest. 1996 Oct;19(9):581-5. doi: 10.1007/BF03349021. |
| 14769680 | Background | Wang TJ, Larson MG, Levy D, Benjamin EJ, Leip EP, Wilson PW, Vasan RS. Impact of obesity on plasma natriuretic peptide levels. Circulation. 2004 Feb 10;109(5):594-600. doi: 10.1161/01.CIR.0000112582.16683.EA. |
| 16291870 | Background | Potter LR, Abbey-Hosch S, Dickey DM. Natriuretic peptides, their receptors, and cyclic guanosine monophosphate-dependent signaling functions. Endocr Rev. 2006 Feb;27(1):47-72. doi: 10.1210/er.2005-0014. Epub 2005 Nov 16. |
| 21849523 | Background | Khan AM, Cheng S, Magnusson M, Larson MG, Newton-Cheh C, McCabe EL, Coviello AD, Florez JC, Fox CS, Levy D, Robins SJ, Arora P, Bhasin S, Lam CS, Vasan RS, Melander O, Wang TJ. Cardiac natriuretic peptides, obesity, and insulin resistance: evidence from two community-based studies. J Clin Endocrinol Metab. 2011 Oct;96(10):3242-9. doi: 10.1210/jc.2011-1182. Epub 2011 Aug 17. |
| 19477358 | Background | Tsukamoto O, Fujita M, Kato M, Yamazaki S, Asano Y, Ogai A, Okazaki H, Asai M, Nagamachi Y, Maeda N, Shintani Y, Minamino T, Asakura M, Kishimoto I, Funahashi T, Tomoike H, Kitakaze M. Natriuretic peptides enhance the production of adiponectin in human adipocytes and in patients with chronic heart failure. J Am Coll Cardiol. 2009 Jun 2;53(22):2070-7. doi: 10.1016/j.jacc.2009.02.038. |
| 22419733 | Background | Pivovarova O, Gogebakan O, Kloting N, Sparwasser A, Weickert MO, Haddad I, Nikiforova VJ, Bergmann A, Kruse M, Seltmann AC, Bluher M, Pfeiffer AF, Rudovich N. Insulin up-regulates natriuretic peptide clearance receptor expression in the subcutaneous fat depot in obese subjects: a missing link between CVD risk and obesity? J Clin Endocrinol Metab. 2012 May;97(5):E731-9. doi: 10.1210/jc.2011-2839. Epub 2012 Mar 14. |
| 19690065 | Background | Miyashita K, Itoh H, Tsujimoto H, Tamura N, Fukunaga Y, Sone M, Yamahara K, Taura D, Inuzuka M, Sonoyama T, Nakao K. Natriuretic peptides/cGMP/cGMP-dependent protein kinase cascades promote muscle mitochondrial biogenesis and prevent obesity. Diabetes. 2009 Dec;58(12):2880-92. doi: 10.2337/db09-0393. Epub 2009 Aug 18. |
| 22307324 | Background | Bordicchia M, Liu D, Amri EZ, Ailhaud G, Dessi-Fulgheri P, Zhang C, Takahashi N, Sarzani R, Collins S. Cardiac natriuretic peptides act via p38 MAPK to induce the brown fat thermogenic program in mouse and human adipocytes. J Clin Invest. 2012 Mar;122(3):1022-36. doi: 10.1172/JCI59701. Epub 2012 Feb 6. |
| 8380606 | Background | Holmes SJ, Espiner EA, Richards AM, Yandle TG, Frampton C. Renal, endocrine, and hemodynamic effects of human brain natriuretic peptide in normal man. J Clin Endocrinol Metab. 1993 Jan;76(1):91-6. doi: 10.1210/jcem.76.1.8380606. |
| 3640682 | Background | Pacini G, Bergman RN. MINMOD: a computer program to calculate insulin sensitivity and pancreatic responsivity from the frequently sampled intravenous glucose tolerance test. Comput Methods Programs Biomed. 1986 Oct;23(2):113-22. doi: 10.1016/0169-2607(86)90106-9. |
| 19491226 | Background | Freda PU, Shen W, Reyes-Vidal CM, Geer EB, Arias-Mendoza F, Gallagher D, Heymsfield SB. Skeletal muscle mass in acromegaly assessed by magnetic resonance imaging and dual-photon x-ray absorptiometry. J Clin Endocrinol Metab. 2009 Aug;94(8):2880-6. doi: 10.1210/jc.2009-0026. Epub 2009 Jun 2. |
| 2229309 | Background | Welch S, Gebhart SS, Bergman RN, Phillips LS. Minimal model analysis of intravenous glucose tolerance test-derived insulin sensitivity in diabetic subjects. J Clin Endocrinol Metab. 1990 Dec;71(6):1508-18. doi: 10.1210/jcem-71-6-1508. |
| D001835 |
| Body Weight |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D014652 | Vascular Diseases |
| D044882 | Glucose Metabolism Disorders |
| D008659 | Metabolic Diseases |
| D004700 | Endocrine System Diseases |
| D010455 | Peptides |
| D000602 | Amino Acids, Peptides, and Proteins |
| D009419 | Nerve Tissue Proteins |
| D011506 | Proteins |
| D002712 | Chlorides |
| D006851 | Hydrochloric Acid |
| D017606 | Chlorine Compounds |
| D007287 | Inorganic Chemicals |
| D017670 | Sodium Compounds |