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Department of Internal Medicine

Natalie J. Torok, M.D. View profile as PDF

Natalie J. Torok

Clinical Interests

Natalie Torok is a clinician-scientist with active research projects focusing on mechanism(s) of liver fibrogenesis. She also manages patients who have liver cancer or cholestatic diseases and takes cares of patients following liver transplantation.


Associate Clinical Professor


Gastroenterology and Hepatology, Internal Medicine


Internal Medicine


Gastroenterology and Hepatology


UC Davis Medical Group, Folsom


UC Davis Medical Center
2315 Stockton Blvd., Suite 3016
Sacramento, CA 95817
Driving Directions
Phone: 916-734-2890

UC Davis Medical Group - Folsom
271 Turn Pike Dr.
Folsom, CA 95630
Driving Directions
Phone: 916-985-9300

Additional Phone:

Physician Referrals: 800-4-UCDAVIS (800-482-3284)

Other Languages:

French, Hungarian, Russian


M.D., Semmelweis Medical University, Budapest, 1988


Semmelweis University , Budapest , 1988-1990
Mayo Clinic , Rochester, Minnesota, 1996-1999


Mayo Clinic , Rochester, Minnesota, 1999-2003

Board Certifications:

American Board of Internal Medicine, 2000
American Board of Internal Medicine, Gastroenterology, 2004

Professional Memberships:

American Association for Cancer Research
American College of Physicians
American Liver Foundation
American Medical Association

Select Honors and Awards:

American Liver Foundation Junior Scholar Award, 2004

UC Davis Health System Research Award, 2004

American Liver Foundation Fellow Award, 2000

Summa cum Laude, 1998

Merck Senior Fellow Research Award, American Gastroenterological Association, 1994

Postdoctoral Research Fellow Award, American Liver Foundation, 1994

Mayo-Thompson Fellowship/Award, 1993

Select Recent Publications:

Venugopal S, Jiang J, Kim TH, Li Y, Wang SS, Torok NJ, Wu J, Zern MA: Liver fibrosis causes downregulation of miRNA-150 and miRNA-194 in hepatic stellate cells and their over-expression causes decreased stellate cell activation. Am J Physiol Gastrointest Liver Physiol 298: 2010, in press.

Silveira M, Torok NJ , Gossard A, Keach J, Jorgensen R, Petz J, Lindor KL: Minocycline in the treatment of patients with Primary Sclerosing Cholangitis: Results of a pilot study; American Journal of Gastroenterology, 104(1):83-8, 2009.

Sohail MA, Hashmi AZ, Hakim W, Watanabe A, Zipprich A, Groszmann RJ, Dranoff JA, Torok NJ, Mehal WZ.: Adenosine Induces Loss of Actin Stress Fibers and Inhibits Contraction in Hepatic Stellate Cells via Rho Inhibition. Hepatology, Jan; 49(1):185-94, 2009.

Jiang J, Mikami K, Venugopal S, Li Y and Torok NJ: Apoptotic Body Engulfment by Hepatic Stellate Cells Promotes Their Survival by the JAKISTAT and AktlNF-KB-dependent pathways, J. of Hepatology, Jul; 51(1):139-48, 2009.

Jiang J, Mikarni K, Shah VH and Torok, N: Leptin induces phagocytosis of apoptotic bodies by hepatic stellate cells via a Rho GTP-ase-dependent mechanism. Hepatology, Nov; 48(5):1497-505, 2008.

Devaraj S, Torok, N, Samols D, and Jialall: Adiponectin Downregulates C-Reactive Protein Synthesis and Secretion from Human Aortic Endothelial Cells: Evidence for an Adipose Tissue-Vascular Loop. Arterioscler Thromb Vasc BioI. Jul; 28(7):1368-74, 2008.

Rahim, N, Prosser, C, Bowlus, C, Torok, N, Troppmann, C, Ramsamooj, R, O'Brien, M, and Rossaro L: Increasing adherence to therapy for recurrent hepatitis C after liver transplantation by starting at lower drug doses and adding growth factors. Practical Gastroenterology, XXXI, 24-33, 2007.

Seo, S; Maganti, K, Khehra, M, Ramsamooj, R, Tsodikov, A, Bowlus, C, McVicar, J, Zern, M, and Torok N. De Novo Nonalcoholic Fatty Liver Disease after Liver Transplantation. Liver Transplantation, 13(6):844-7, 2007.

Zhan S., Jiang J., Wu J., Halsted C, Friedman SL, Zern MA, Torok NJ, Phagocytosis of Apoptotic Bodies by Hepatic Stellate Cells Induces NADPH Oxidase and It Is Associated With Liver Fibrosis In Vivo. Hepatology, 43, 435-443, 2006.

Canbay A, Taimr P, Torok N, Higuchi H, Friedmann S, and Gores G: Apoptotic body engulfment by a human stellate cell line is profibrogenic. Laboratory Investigation, 83(5):655-663, 2003.

To see if Natalie J. Torok is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).