Catherine M. Kotz, PhD

Professor, Department of Integrative Biology and Physiology (IBP)

Catherine M. Kotz

Contact Info

kotzx004@umn.edu

Office Phone 612-301-7687

Office Address:
CCRB 3-144

Mailing Address:
2231 6th Street SE
Minneapolis, MN 55455

Post Doctoral Fellowship, Veterans Affairs, Minneapolis

PhD, University of Minnesota (Nutrition Science), 1993

MS, University of Minnesota (Nutrition Science), 1990

BS, University of Minnesota (Biology), 1984

Summary

Dr. Kotz's training and background are in basic science obesity research.  Her Ph.D. research was done in the area of neuropeptide regulation of feeding and energy expenditure, including effects on circulating hormones and enzymatic activity in white and brown adipose tissue. 

Cathy's post-doctoral research involved the role of orexin in body weight regulation and orexin's effects on learning and memory during aging.

Awards & Recognition

Co-Director, MN Obesity Prevention Training Program; Chair of Public Affairs, The Obesity Society; Co-Director, Animal Physiology & Neuromodulation Core at UMN.

Professional Associations

Associate Editor, International Journal of Obesity

Research

Research Summary/Interests

Our laboratory focuses on brain sites and substrates mediating energy balance, in obesity prone and obesity-resistant animal models. The goal of our laboratory is to understand brain mechanisms important in determining the popensity for obesity. These investigations involve study of neuropeptides that regulate feeding behavior and energy expenditure, including that related to physical activity. Our most recent focus is on the role of orexin, also known as hypocretin. Orexin is a recently identified neuropeptide predominantly located in the lateral hypothalamus that enhances feeding and physical activity, and which also modifies sleep/wake patterns. Our laboratory has shown that orexin elevates non-volitional low-level activity, which has an important impact on body weight control. We have also shown that this low level activity may be important in maintaing obesity resistance during aging. The techniques we use include stereotaxic surgery, immunohistochemistry, food intake measurements, physical activity chamber measurements, indirect calorimetry, body composition (EchoNMR) radioimmunoassay and molecular biology procedures, including RNA/DNA extraction, northern blots, slot blots, rtPCR, cDNA probe synthesis, random primer labeling, hybridization, densitometry and microarrays.

Publications