Animal Models and Phenotyping
The function of this Core is to provide members of the Diabetes and Obesity Center with the expertise, resources and the facilities needed for animal husbandry and necropsy services and to maintain and phenotype murine models of diabetes and obesity.
The Core also assists Center members in developing new mouse models of diabetes, obesity and insulin resistance.
Aims of the Core
- Support current COBRE and Center projects. The Core provides state-of-the-art facilities and intellectual capability for the development and characterization of new and existing animal models used in diabetes and obesity research. The Core has developed and implemented standard procedures for the measurement of systemic insulin sensitivity and glucose tolerance.
- Educate and train investigators. The Core has installed a multi-user computer program (mLIMS) to track all animal breeding and colony maintenance. The Core routinely conducts formal and informal training sessions to impart the experience and the expertise gathered from several years of working with mouse models. The Core also assists individual investigators in designing appropriate phenotyping protocols, surgical procedures and tissue collection and storage protocols.
- Develop new protocols and techniques. The Core has and will continue to develop new mouse models of interest to investigators. It will expand its operations to support future needs and will develop state-of-the-art mouse models and develop new methods and new assays and modeling for metabolic phenotyping.
Facilities & Instrumentation
Portable GE Medical Systems Lunar PIXImus Dual-Energy X-Ray Absorptiometer (DEXA) Scan - The Lunar PIXImus Densitometer (GE Medical Systems) provides bone mineral and body composition (lean and fat body mass) composition results from total body imaging in less than 5 min. This equipment is housed in the Delia Baxter building.
TSE PhenoMaster/LabMaster Metabolic Chamber System - A highly-flexible modular system for state-of-the-art automated metabolic and behavioral monitoring of small rodents. It is located in a dedicated, environmentally-controlled room (12h:12h light:dark cycle; red light equipped for afterhours treatment; 150 ft2).
TSE CaloTreadmill - Computer-controlled Calorimetric treadmill system to investigate exercise calorimetry in test subjects. Enclosed by an air-tight transparent housing that can be connected to a fully automated indirect gas calorimetry system (CaloSys) operated by PhenoMaster software. Calorimetric parameters, such as oxygen consumption (VO2), carbon dioxide production (VCO2), respiratory exchange rate (RQ) and energy expenditure (EE) are determined at fixed temporal intervals while the test subject is moving according to an experimenter-defined activity profile.
AVOXimeter 4000 Whole Blood CO-oximeter - Performs individual measurements of total hemoglobin (tHb), oxyhemoglobin saturation (%O2Hb), carboxyhemoglobin (%COHb), and methemoblobin (%MetHb) on freshly-drawn or heparin- or EDTA-anticoagulated whole blood samples as small as 50µL. Oxygen content ([O2Ct]), percent saturation (SO2) and oxygen carrying capacity (O2Cap) of the blood sample are automatically calculated from the %HbO2 and THb measurements.
Kent Scientific CODA 6 Non-invasive Blood Pressure Monitoring System - A computerized system that automatically performs rapid, simultaneous, multiple measurements of six physiological parameters: systolic blood pressure, diastolic blood pressure, mean pressure, heart rate, tail blood flow, and tail blood volume, on up to six test subjects.
Telemetry System - Uses implantable telemetry technology to collect data in real time to monitor body temperature, activity, blood pressure, respiratory function, ECG, and blood glucose.
The UofL Animal Models and Phenotyping Core offers several services for center members as well as other investigators and UofL faculty.