Faculty Research Areas

Research areas in the Division include airway and alveolar epithelial cell biology, gene regulation in lung injury and repair, lung cancer, nanoparticle trafficking across the alveolar epithelium, pulmonary fibrosis, stem cell biology and regenerative medicine, outcomes in critical care, cystic fibrosis, pulmonary hypertension and sleep.

  • Mechanical properties and breathing patterns of the respiratory system in health and disease.
    Disorders involving the nerves and muscles and how they affect breathing.
    Exercise testing in respiratory and cardiovascular conditions, and its use in the evaluation of the mechanisms of shortness of breath.

  • Non-apneic breathing problems in obesity
    The connection between heart rhythm problems (atrial fibrillation) and breathing problems during sleep
    Dream enactment (REM sleep behavior disorder) and early detection of Parkinson’s disease
    Treatment of complex sleep apnea, central sleep apnea and obstructive sleep apnea
    Body temperature and sleep

  • Lung cancer in women
    Lung cancer in Asian patients
    Cost-effectiveness of new bronchoscopic and pleural techniques (EBUS, EMN, IPC, BT, endobronchial valves) in ethically- and economically-diverse populations

  • Imaging approaches
    Mathematical modelling
    Environmental impact
    Mechanisms of chronic lung diseases

  • New treatments for patients with pulmonary hypertension
    Outcomes in patients who have undergone lung transplantation

     

  • Quality
    Safety
    Critical care
    Teamwork and communication

     

  • Exploring and implementing best practices and innovative curricula in graduate medical education
    Use of social media in graduate medical education
    Exploring hypoxemia in non-ARDS patients

     

  • Critical care medicine
    Lung injury, repair after lung injury and the pathogenesis of pulmonary fibrosis
    Lung transplant outcomes

     

  • Novel drug treatments for cystic fibrosis patients
    Optimization of care for patients with advanced lung disease

  • Role of endoplasmic reticulum stress in alveolar epithelial abnormalities during development and in pulmonary fibrosis
    Transcriptional and epigenetic regulation of pulmonary alveolar epithelial cell differentiation and plasticity
    Epithelial plasticity and epithelial-mesenchymal cross-talk in the context of lung injury, repair and fibrosis
    Hippo-YAP signaling in regulation of pulmonary stem/progenitor cell proliferation/differentiation

     

Clinical Research

Richard Barbers, MD

Dr. Barbers’ research explores how abnormal repair processes (which include inflammatory and immune mechanisms) eventually lead to airway fibrosis (remodeling) in asthma. He is also collaborating with Dr. Omid Akbari’s laboratory to search out the role of innate and adaptive immunity in asthma as well as to search out the role of autophagy (repair and regeneration of cells) in this very common disease.

Ahmet Baydur, MD

Dr. Baydur’s research investigates changes in respiratory physiology that occur in patients with cardiovascular and ventilatory disorders such as chronic obstructive pulmonary disease (COPD) and asthma. He is also interested in learning whether linking the results of lung imaging, pulmonary function studies and transbronchial lung biopsies better predict outcomes of patients experiencing chronic rejection of their transplanted lung.

Richard Castriotta, MD

Dr. Castriotta’s research activities are focused on the interaction of heart and lung function during sleep in health and disease.

Ching-Fei Chang, MD

Dr. Chang studies the diagnostic yield and cost-effectiveness of new bronchoscopic and pleural interventions. She is also interested in learning whether lung cancer outcomes differ in patient populations with health care disparities.

Sivagini Ganesh, MD

Dr. Ganesh is involved in many multi-centered drug studies looking for better ways to treat patients with pulmonary hypertension, pulmonary fibrosis, or both. She is also conducting investigator-initiated studies that seek better treatment options for patients with pulmonary hypertension or lung transplantation.

Santhi Iyer-Kumar, MD

Dr. Iyer-Kumar is involved in the study and implementation of best practices within the ICU and in health systems to improve patient safety and optimize care delivery.

May Lee, MD

Dr. Lee’s clinical research interests are in critical care medicine as well as graduate medical education.

Janice Liebler, MD

Dr. Liebler is interested in identifying sub-populations of patients in the critical care unit who are at an increased risk for adverse outcomes. She is also involved in several multi-centered clinical research studies, including one that will attempt to discover the best ways to transition patients from mechanical ventilation to spontaneous breathing.

Adupa Purush Rao, MD

Dr. Rao’s research activities are focused on improving the outcomes for patients with cystic fibrosis. He is participating in several multi-centered studies, as well as investigator-initiated studies, toward achieving that goal.

Basic Science Research

Ya-Wen Chen, PhD

Dr. Chen’s research interests focus on using human pluripotent stem cells (including embryonic stem cells and induced pluripotent stem cells) as a model to study the mechanisms of lung injury repair and ultimately apply the pluripotent stem cell derived lung stem/progenitor or mature airway/lung epithelial cells to facilitate lung injury repair, stem-cell therapy, and regenerative medicine.

Edward D. Crandall, PhD, MD

Dr. Crandall’s research group has long focused on the lung’s primary barrier between the external environment and the internal milieu, namely the alveolar epithelium (lining cells of the terminal air sacs). Dr. Crandall and his group have investigated many aspects of alveolar epithelial cell biology (e.g., acute and chronic lung injury/recovery and alveolar epithelial interactions with engineered nanomaterials). Current project highlights include studies on the cell biology of interactions of inhaled nanoparticles with alveolar epithelial cells and mechanisms underlying the relationship between intermittent long-term low-level exposure to inhaled nanomaterials and development of chronic lung diseases including COPD and pulmonary fibrosis. The ultimate goal of these studies is to develop new approaches to prevention of lung diseases due to air pollution and to enhancement of therapeutic nanomaterial-mediated drug/gene delivery.

Arnold Sipos, PhD, MD

Dr. Sipos applies his expertise in live cell imaging techniques to visualize biological events in cells high spatial and temporal resolution. His research focuses one evaluating how exposure of the lungs to ambient particles is involved in the development of chronic lung diseases, either by their direct effect on the airway epithelial cells or through disrupting cellular homeostatic mechanisms.

Beiyun Zhou, PhD

Dr. Zhou’s research focuses on transcriptional regulation of alveolar epithelial cell differentiation and plasticity, and epithelial-mesenchymal cross talk in the context of lung injury, repair and fibrosis.

Collaborate Information

For people interest in collaborating with this Division, the research liaison Janice Liebler (clinical/translational).

The Division of Pulmonary, Critical Care and Sleep Medicine (PCCSM) strives towards excellence in all three academic missions, providing exceptional clinical care, robust basic and clinical research programs and outstanding opportunities for training of the next generation of clinicians in our highly sought after fellowship programs. Division faculty and fellows provide services in seven Intensive Care Units, two at Los Angeles General Medical Center, four at KH, and one at Norris.

Research areas in the Division include airway and alveolar epithelial cell biology, gene regulation in lung injury and repair, lung cancer, nanoparticle trafficking across the alveolar epithelium, pulmonary fibrosis, stem cell biology and regenerative medicine, outcomes in critical care, cystic fibrosis, pulmonary hypertension and sleep.

    • Mechanical properties and breathing patterns of the respiratory system in health and disease.
    • Disorders involving the nerves and muscles and how they affect breathing.
    • Exercise testing in respiratory and cardiovascular conditions, and its use in the evaluation of the mechanisms of shortness of breath.
    • Non-apneic breathing problems in obesity
    • The connection between heart rhythm problems (atrial fibrillation) and breathing problems during sleep
    • Dream enactment (REM sleep behavior disorder) and early detection of Parkinson’s disease
    • Treatment of complex sleep apnea, central sleep apnea and obstructive sleep apnea
    • Body temperature and sleep
    • Lung cancer in women
    • Lung cancer in Asian patients
    • Cost-effectiveness of new bronchoscopic and pleural techniques (EBUS, EMN, IPC, BT, endobronchial valves) in ethically- and economically-diverse populations
    • Imaging approaches
    • Mathematical modelling
    • Environmental impact
    • Mechanisms of chronic lung diseases
    • New treatments for patients with pulmonary hypertension
    • Outcomes in patients who have undergone lung transplantation
    • Quality
    • Safety
    • Critical care
    • Teamwork and communication
    • Exploring and implementing best practices and innovative curricula in graduate medical education
    • Use of social media in graduate medical education
    • Exploring hypoxemia in non-ARDS patients
    • Critical care medicine
    • Lung injury, repair after lung injury and the pathogenesis of pulmonary fibrosis
    • Lung transplant outcomes
    • Novel drug treatments for cystic fibrosis patients
    • Optimization of care for patients with advanced lung disease
    • Role of endoplasmic reticulum stress in alveolar epithelial abnormalities during development and in pulmonary fibrosis
    • Transcriptional and epigenetic regulation of pulmonary alveolar epithelial cell differentiation and plasticity
    • Epithelial plasticity and epithelial-mesenchymal cross-talk in the context of lung injury, repair and fibrosis
    • Hippo-YAP signaling in regulation of pulmonary stem/progenitor cell proliferation/differentiation