My research has focused on the role of bioenergetics, ion transport and metabolic coupling factors in nutrient- and drug-stimulated insulin release at normal conditions and during diabetes mellitus.
Using combinations of different methods and approaches, including 31P, 13C, and 1H Nuclear Magnetic Resonance Spectroscopy techniques, polarographic and phosphorescence methods of measuring O2 consumption, Ca2+ imaging and others, I attempt to directly address the essential mechanisms of stimulus-secretion coupling in pancreatic islets.
Doliba, Nicolai M. Qin, Wei. Vinogradov, Sergei A. Wilson, David F. Matschinsky, Franz M.: Palmitic acid acutely inhibits acetylcholine- but not GLP-1-stimulated insulin secretion in mouse pancreatic islets. American Journal of Physiology - Endocrinology & Metabolism 299(3): E475-85, Sep 2010.
Gao, Nan. Le Lay, John. Qin, Wei. Doliba, Nicolai. Schug, Jonathan. Fox, Alan J. Smirnova, Olga. Matschinsky, Franz M. Kaestner, Klaus H.: Foxa1 and Foxa2 maintain the metabolic and secretory features of the mature beta-cell. Molecular Endocrinology 24(8): 1594-604, Aug 2010.
Imai, Yumi. Patel, Hiral R. Doliba, Nicolai M. Matschinsky, Franz M. Tobias, John W. Ahima, Rexford S.: Analysis of gene expression in pancreatic islets from diet-induced obese mice. Physiological Genomics 36(1): 43-51, Dec 12 2008.
Imai, Yumi. Patel, Hiral R. Hawkins, Evan J. Doliba, Nicolai M. Matschinsky, Franz M. Ahima, Rexford S.: Insulin secretion is increased in pancreatic islets of neuropeptide Y-deficient mice. Endocrinology 148(12): 5716-23, Dec 2007.
Gao, Nan. White, Peter. Doliba, Nicolai. Golson, Maria L. Matschinsky, Franz M. Kaestner, Klaus H.: Foxa2 controls vesicle docking and insulin secretion in mature Beta cells. Cell Metabolism 6(4): 267-79, Oct 2007.
Doliba, Nicolai M. Wehrli, Suzanne L. Vatamaniuk, Marko Z. Qin, Wei. Buettger, Carol W. Collins, Heather W. Matschinsky, Franz M.: Metabolic and ionic coupling factors in amino acid-stimulated insulin release in pancreatic beta-HC9 cells. American Journal of Physiology - Endocrinology & Metabolism 292(6): E1507-19, Jun 2007.
Hardy, Olga T. Hohmeier, Hans E. Becker, Thomas C. Manduchi, Elisabetta. Doliba, Nicolai M. Gupta, Rana K. White, Peter. Stoeckert, Christian J Jr. Matschinsky, Franz M. Newgard, Christopher B. Kaestner, Klaus H.: Functional genomics of the beta-cell: short-chain 3-hydroxyacyl-coenzyme A dehydrogenase regulates insulin secretion independent of K+ currents. Molecular Endocrinology 21(3): 765-73, Mar 2007.
Vatamaniuk, Marko Z. Gupta, Rana K. Lantz, Kristen A. Doliba, Nicolai M. Matschinsky, Franz M. Kaestner, Klaus H.: Foxa1-deficient mice exhibit impaired insulin secretion due to uncoupled oxidative phosphorylation. Diabetes 55(10): 2730-6, Oct 2006.
Doliba, Nicolai M. Qin, Wei. Vatamaniuk, Marko Z. Buettger, Carol W. Collins, Heather W. Magnuson, Mark A. Kaestner, Klaus H. Wilson, David F. Carr, Richard D. Matschinsky, Franz M.: Cholinergic regulation of fuel-induced hormone secretion and respiration of SUR1-/- mouse islets. American Journal of Physiology - Endocrinology & Metabolism 291(3): E525-35, Sep 2006.
Doliba, Nicolai M. Qin, Wei. Vatamaniuk, Marko Z. Li, Changhong. Zelent, Dorothy. Najafi, Habiba. Buettger, Carol W. Collins, Heather W. Carr, Richard D. Magnuson, Mark A. Matschinsky, Franz M.: Restitution of defective glucose-stimulated insulin release of sulfonylurea type 1 receptor knockout mice by acetylcholine. American Journal of Physiology - Endocrinology & Metabolism 286(5): E834-43, May 2004.
Doliba, Nicolai M. Vatamaniuk, Marko Z. Buettger, Carol W. Qin, Wei. Collins, Heather W. Wehrli, Suzanne L. Carr, Richard D. Matschinsky, Franz M.: Differential effects of glucose and glyburide on energetics and Na+ levels of betaHC9 cells: nuclear magnetic resonance spectroscopy and respirometry studies. Diabetes 52(2): 394-402, Feb 2003.
Doliba NM and Matschinsky FM: Metabolic basis of insulin secretion. In: Contemporary Endocrinology: Type I Diabetes: Etiology and Treatment. M.A. Sperling (eds.). Humana Press Inc., Totowa, NJ, Page: p.115-144, 2003.
back to top
Last updated: 12/04/2014
The Trustees of the University of Pennsylvania