The Animal Metabolic Physiology Core is designed to meet the needs for characterization of rodent models that have alterations in glucose homeostasis, insulin action, leptin action and/or body composition. Its main function is to teach and provide consultation on ex vivo and in vivo methods to investigate the mechanisms for metabolic alterations in genetically-manipulated mouse models and in dietary models of obesity/leanness or insulin resistance/sensitivity. The specific objectives of the Core are 1) to teach and 2) to provide consultation to investigators in designing, carrying out and interpreting in vitro and in vivo studies to investigate the action of insulin and hormones that regulate energy balance such as leptin;glucose homeostasis;lipid metabolism;and body composition;3) The Core also performs a limited number of these studies on selected mouse or rat models created by or obtained by members of the Center. Services of the Core include ex vivo methods such as adipocyte isolation, and dissection and incubation of isolated skeletal muscles to study glucose transport, insulin signaling, leptin signaling, and glucose and fatty acid metabolism. In vivo methods assessing insulin action and glucose homeostasis include insulin tolerance test, glucose tolerance test, signaling assays in response to insulin injection or infusion, and measurement of glucose turnover, endogenous glucose production and glucose uptake by individual tissues during clamp studies. In vivo methods to investigate biological actions of orexigenic and anorexigenic hormones include measurement of food intake, energy expenditure and leptin signaling in peripheral tissues and hypothalamic nuclei. The Core also provides specialized equipment such as a DEXA scanner for non-invasive analysis of body composition and bone mineral density and a Coulter Counter for determining adipocyte number and size distribution. The Core Director, Barbara B. Kahn, MD, the Associate Core Director, Odile Peroni, PhD and the Research Associates who work with the Core have extensive experience with the metabolic and signaling assays offered by the Core. They are developing new assays to characterize additional aspects of integrated fuel metabolism and enerov homeostasis.

Public Health Relevance

The study of genetically engineered mouse models is an important tool to understand the physiology of newly discovered molecules. The Animal Metabolic Physiology Core is designed to meet the needs for characterization of rodent models that have alterations in glucose homeostasis, insulin action, leptin action and/or body composition. The Core provides both new and established investigators with the tools that will lead to important contributions to diabetes and obesity research.

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Center Core Grants (P30)
Project #
5P30DK057521-12
Application #
8249925
Study Section
Special Emphasis Panel (ZDK1)
Project Start
Project End
Budget Start
2011-04-01
Budget End
2012-03-31
Support Year
12
Fiscal Year
2011
Total Cost
$340,449
Indirect Cost
Name
Massachusetts General Hospital
Department
Type
DUNS #
073130411
City
Boston
State
MA
Country
United States
Zip Code
02199
Vujic, Ana; Lerchenm├╝ller, Carolin; Wu, Ting-Di et al. (2018) Exercise induces new cardiomyocyte generation in the adult mammalian heart. Nat Commun 9:1659
Fulzele, Keertik; Dedic, Christopher; Lai, Forest et al. (2018) Loss of Gs? in osteocytes leads to osteopenia due to sclerostin induced suppression of osteoblast activity. Bone 117:138-148
Battistone, Maria A; Nair, Anil V; Barton, Claire R et al. (2018) Extracellular Adenosine Stimulates Vacuolar ATPase-Dependent Proton Secretion in Medullary Intercalated Cells. J Am Soc Nephrol 29:545-556
Cheung, Pui W; Terlouw, Abby; Janssen, Sam Antoon et al. (2018) Inhibition of non-receptor tyrosine kinase Src induces phosphoserine 256-independent aquaporin-2 membrane accumulation. J Physiol :
Karim, Lamya; Moulton, Julia; Van Vliet, Miranda et al. (2018) Bone microarchitecture, biomechanical properties, and advanced glycation end-products in the proximal femur of adults with type 2 diabetes. Bone 114:32-39
Kolar, Matthew J; Nelson, Andrew T; Chang, Tina et al. (2018) Faster Protocol for Endogenous Fatty Acid Esters of Hydroxy Fatty Acid (FAHFA) Measurements. Anal Chem 90:5358-5365
Todd, William D; Fenselau, Henning; Wang, Joshua L et al. (2018) A hypothalamic circuit for the circadian control of aggression. Nat Neurosci 21:717-724
Cox, Kimberly H; Oliveira, Luciana M B; Plummer, Lacey et al. (2018) Modeling mutant/wild-type interactions to ascertain pathogenicity of PROKR2 missense variants in patients with isolated GnRH deficiency. Hum Mol Genet 27:338-350
Aguayo-Mazzucato, Cristina; Bonner-Weir, Susan (2018) Pancreatic ? Cell Regeneration as a Possible Therapy for Diabetes. Cell Metab 27:57-67
McKeown, Nicola M; Dashti, Hassan S; Ma, Jiantao et al. (2018) Sugar-sweetened beverage intake associations with fasting glucose and insulin concentrations are not modified by selected genetic variants in a ChREBP-FGF21 pathway: a meta-analysis. Diabetologia 61:317-330

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