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Karthik S Suresh, M.D.

Photo of Dr. Karthik S Suresh, M.D.

Assistant Professor of Medicine


Languages: English, Tamil

Expertise: General Internal Medicine

Research Interests: ROS signaling; endothelial cell biology; vascular biology; calcium singaling


Johns Hopkins Bayview Medical Center

4940 Eastern Avenue
301 Building, 1st Floor
Baltimore, MD 21224 map
Phone: 410-955-9441

Johns Hopkins University

1830 E. Monument St.
Interstitial Lung Disease Clinic, 5th Floor
Baltimore, MD 21287 map
Phone: 410-955-4176


Dr. Karthik Suresh is an assistant professor of medicine at the Johns Hopkins University School of Medicine. His areas of clinical interest and expertise include general internal medicine, pulmonary / critical care medicine and pulmonary complications of immunotherapy.

He earned his B.S. and M.D. from the University of Louisville School of Medicine. He completed his residency at the Osler Medicine training program at Johns Hopkins, and performed a fellowship in Pulmonary / Critical Care Medicine at Johns Hopkins. more


  • Assistant Professor of Medicine

Departments / Divisions



  • MD, University of Louisville School of Medicine (2008)


  • Johns Hopkins University School of Medicine / Internal Medicine (2011)


  • Johns Hopkins University School of Medicine / Pulmonary Medicine (2012)
  • Johns Hopkins University School of Medicine (2016)

Board Certifications

  • American Board of Internal Medicine / Internal Medicine (2011)
  • American Board of Internal Medicine / Pulmonary Disease (2015)

Research & Publications


Our lab focuses on three major topics focused around mechanisms of microvascular endothelial cell (MVEC) dysfunction in the lung: ROS-induced Ca2+ signaling; mechanisms of checkpoint inhibitor toxicity; and MVEC mitochondrial structure/function/genomics

1. ROS-induced Ca2+ influx: Using endothelial cells (ECs) isolated from humans, mice and rats, as well as animal models of ALI and PAH, we investigate the role of elevated reactive oxygen species (ROS) and intracellular calcium in regulating disease-specific abnormalities in EC function. In ALI, we study signaling pathways governing formation of paracellular gaps between endothelial cells, which clinically leads to alveolar flooding and hypoxemia. For PAH, we study the effect of ROS and calcium signaling on EC migration and proliferation as it relates to formation of vaso-occlusive lesions in the distal arterioles of the lung, a known contributor to elevations in pulmonary artery pressures in this disease.


2. Mechanisms of checkpoint inhibitor toxicity: In collaboration with Dr. Jarushka Naidoo (Oncology) and Dr. Franco D'Alessio (Pulm/CC), we study clinical characterstics and biologic mechanisms of lung injury in patients who develop pneumonitis after recieving immune checkpoint inhibitors (ICIs) - termed checkpoint inhibitor pneumonitis (CIP). We are specifically interested in mechanisms of endothelial leak and alveolar inflammatory cell efflux in CIP.


3. Mitochondrial structure/function/genomics in PAH: We are interested in the role of abnormal mitochondrial structure (e.g. increased fragmentation) and function (changes in respiration and/or TCA fuel sources) as well as genomics (induction of somatic mutations) as it relates to increased cytosolic Ca2+ levels and promotion of abnormal MVEC behavior (migration, proliferation) in PAH.

Clinical Trial Keywords

ROS signaling, calcium signaling, microvascular endothelial cell physiology, mitochondrial structure/function, mechanisms of immunotherapy toxicity

Clinical Trials

 Optimization of steroid-refractory immune checkpoint inhibitors; Therapeutic options for autoimmune-associated interstitial lung disease

Selected Publications

Suresh K, Servinsky LE, Reyes J, Baksh S, Undem C, Caterina MJ, Pearse DB, Shimoda LA. Hydrogen Peroxide-induced Calcium Influx in lung microvascular endothelial cells involves TRPV4. Am J Physiol Lung Cell Mol Physiol. 309: L1467–L1477, 2015 (Editor's Pick)

Suresh K, Servinsky LE, Reyes J, Undem C, Zaldumbide J, Rentsendorj O, Modekurty S, Dodd-o J, Pearse DB, Shimoda LA. CD36 mediates H2O2-induced calcium influx in lung microvascular endothelial cells Am J Physiol Lung Cell Mol Physiol. 312: L143-153, 2016

Suresh K, Servinsky L, Jiang H, Bigham Z, Huetsch J, Kliment C, Damarla M, Shimoda LA "ROS-induced Ca2+ via TRPV4 and microvascular endothelial dysfunction in the SU5416/Hypoxia model of pulmonary arterial hypertension", Am J Physiol Lung Cell Mol Physiol. 2018 [Epub ahead of print]

Suresh K, Zhong Q, Voong R, Ettinger D, Marrone K, Kelly R, Hahn C, Levy B, Feliciano J, Brahmer J, Forde P, Feller-Kopman D, Lerner A, Lee H, Yarmus L, D'Alessio F, Danoff S, Naidoo J. Clinical Features and Bronchoalveolar Lavage Characteristics Of PD-1 Pneumonitis In Lung Cancer Patients Receiving Checkpoint Immunotherapy, J. Thoracic Onc. [Epub ahead of print]. 2018

Suresh K, Naidoo J., Lin T, Danoff S. Pulmonary complications of immune checkpoint inhibitor therapy: benefits and risks. CHEST [epub ahead of print]. 2018

Contact for Research Inquiries

Research Lab: Johns Hopkins Bayview
Asthma and Allergy Building, 4th floor
Baltimore, MD 21224 map

Patient Ratings & Comments

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

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