MarkAndrewTitusMD

Gastroenterology • Newport News, VA

Advanced Endoscopic Interventional

Physician

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Office
101 Philip Roth St
Suite 5a
Newport News, VA 23606
Phone+1 757-599-6333

Fax+1 757-591-7261
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Summary

Dr. Mark Titus, MD is a gastroenterologist in Newport News, Virginia. He is currently licensed to practice medicine in Virginia. He is affiliated with Riverside Regional Medical Center and Sentara CarePlex Hospital.

Education & Training

Vanderbilt University Medical CenterResidency, Internal Medicine, 1998 - 2001
Rutgers New Jersey Medical SchoolClass of 1998

Certifications & Licensure

VA State Medical License 2004 - 2026
American Board of Internal Medicine Gastroenterology

Publications & Presentations

PubMed

182 citations
Molecular Characterization of Enzalutamide-treated Bone Metastatic Castration-resistant Prostate Cancer
Eleni Efstathiou, Mark Titus, Sijin Wen, Anh Hoang, Maria Karlou, Robynne G. Ashe, Shi Ming Tu, Ana Aparicio, Patricia Troncoso, James L. Mohler, Christopher J. Logoth...> ;European Urology. 2015 Jan 1
8 citations
Mechanism of androgen receptor corepression by CKβBP2/CRIF1, a multifunctional transcription factor coregulator expressed in prostate cancer.
Jiann An Tan, Suxia Bai, Gail Grossman, Mark Titus, O. Harris Ford, Elena Pop, Gary J. Smith, James L. Mohler, Elizabeth M. Wilson, Frank S. French> ;Molecular and Cellular Endocrinology. 2014 Jan 25
33 citations
5α-reductase type 3 enzyme in benign and malignant prostate.
Mark Titus, Yun Li, Olga G. Kozyreva, Varun Maher, Alejandro Godoy, Gary J. Smith, James L. Mohler> ;The Prostate. 2014 Feb 1
157 citations
Effects of Abiraterone Acetate on Androgen Signaling in Castrate-Resistant Prostate Cancer in Bone
Eleni Efstathiou, Mark Titus, Dimitra Tsavachidou, Vassiliki Tzelepi, Sijin Wen, Anh Hoang, Arturo Molina, Nicole Chieffo, L. A. Smith, Maria Karlou, Patricia Troncoso...> ;Journal of Clinical Oncology. 2012 Feb 20
6 citations
Dominant-negative androgen receptor inhibition of intracrine androgen-dependent growth of castration-recurrent prostate cancer.
Mark Titus, Brian Zeithaml, Boris Kantor, Xiangping Li, Karin Haack, Dominic T. Moore, Elizabeth M. Wilson, James L. Mohler, Tal Kafri> ;Plos One. 2012 Jan 17
57 citations
Potential Prostate Cancer Drug Target: Bioactivation of Androstanediol by Conversion to Dihydrotestosterone
James L. Mohler, Mark Titus, Elizabeth M. Wilson> ;Clinical Cancer Research. 2011 Sep 15
73 citations
5α-reductase type 3 expression in human benign and malignant tissues: a comparative analysis during prostate cancer progression.
Alejandro Godoy, Elzbieta Kawinski, Yun Li, Daizo Oka, Borislav A. Alexiev, Faris Azzouni, Mark Titus, James L. Mohler> ;The Prostate. 2011 Jul 1
120 citations
Activation of the Androgen Receptor by Intratumoral Bioconversion of Androstanediol to Dihydrotestosterone in Prostate Cancer
James L. Mohler, Mark Titus, Suxia Bai, Brian J. Kennerley, Fred B. Lih, Kenneth B. Tomer, Elizabeth M. Wilson> ;Cancer Research. 2011 Feb 15
7 citations
Androgen Quantitation in Prostate Cancer Tissue Using Liquid Chromatography Tandem Mass Spectrometry
Mark Titus, Kenneth B. Tomer> ;Methods in Molecular Biology. 2011 Jan 1
5Î±-reductase type 3 expression in human benign and malignant tissues: A comparative analysis during prostate cancer progression.
Godoy, A., Kawinski, E., Li, Y., Oka, D., Alexiev, B., Azzouni, F., Titus, M.A., Mohler, J.L.> ;Prostate. 2010-12-28
21 citations
Atmospheric Pressure Photoionization Tandem Mass Spectrometry of Androgens in Prostate Cancer
Fred B. Lih, Mark Titus, James L. Mohler, Kenneth B. Tomer> ;Analytical Chemistry. 2010 Jul 15
11 citations
14-3-3η Amplifies Androgen Receptor Actions in Prostate Cancer
Mark Titus, Jiann An Tan, Christopher W. Gregory, O. Harris Ford, Romesh R. Subramanian, Haian Fu, Elizabeth M. Wilson, James L. Mohler, Frank S. French> ;Clinical Cancer Research. 2009 Dec 15
19 citations
Thioredoxin Reductase 1 Expression and Castration-recurrent Growth of Prostate Cancer
Swaroop S. Singh, Yun Li, Oscar Harris Ford, Carol Wrzosek, Diana Mehedint, Mark Titus, James L. Mohler> ;Translational Oncology. 2008 Sep 1
15 citations
5α‐androstane‐3α,17β‐diol supports human prostate cancer cell survival and proliferation through androgen receptor‐independent signaling pathways: Implication of andro...
Qing Yang, Mark Titus, Kar Ming Fung, Hsueh Kung Lin> ;Journal of Cellular Biochemistry. 2008 Aug 1
386 citations
Testosterone and Dihydrotestosterone Tissue Levels in Recurrent Prostate Cancer
Mark Titus, Michael J. Schell, Fred B. Lih, Kenneth B. Tomer, James L. Mohler> ;Clinical Cancer Research. 2005 Jul 1
140 citations
Steroid 5α-Reductase Isozymes I and II in Recurrent Prostate Cancer
Mark Titus, Christopher W. Gregory, O. Harris Ford, Michael J. Schell, Susan J. Maygarden, James L. Mohler> ;Clinical Cancer Research. 2005 Jun 15
172 citations
Leptin as a novel profibrogenic cytokine in hepatic stellate cells: mitogenesis and inhibition of apoptosis mediated by extracellular regulated kinase (Erk) and Akt ph...
Neeraj K. Saxena, Mark A. Titus, Xiaokun Ding, Jeffrey J. Floyd, Shanthi Srinivasan, Shanthi V. Sitaraman, Frank A. Anania> ;FASEB Journal. 2004 Oct 1
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Press Mentions

Veterinarian Doesn’t Let Sleep Apnea, AFib Slow Him DownAugust 4th, 2018

Hospital Affiliations

Riverside Regional Medical CenterNewport News, Virginia
Sentara CarePlex HospitalHampton, Virginia