Researchers in the Adrian Dobs Lab study topics that include gonadal dysfunction, hyperlipidemia, diabetes mellitus, and the relationship between sex hormones and heart disease. We currently are investigating male gonadal function—with particular interest in new forms of male hormone replacement therapy—and hormonal changes related to aging.

Dr. Sidhaye is interested in improving the care of persons with cystic fibrosis, type 1 diabetes mellitus and hospitalized person with diabetes. research topics include bone health of persons with CF undergoing lung transplant, CF-related diabetes mellitus, Care of persons with type 1 diabetes mellitus transitioning from pediatrics to adult specialty clinics, Management of hospitalized persons with diabetes.

Research conducted in the Gary Wand Lab focuses on neuropsychoendocrinology; the neurobiology of substance abuse; physiogenetics and regulation of the stress response; and the relationship between stress and chemical dependency. Current studies seek to better understand the genetic determinants of the stress response and how excessive stress hormone production contributes to neurobiological disorders, including addiction.

The Wong Lab seeks to understand mechanisms employed by cells and tissues to maintain metabolic homeostasis. We are currently addressing how adipose- and skeletal muscle-derived hormones (adipokines and myokines), discovered in our lab, regulate tissue crosstalk and signaling pathways to control energy metabolism. We use transgenic and knockout mouse models, as well as cell culture systems, to address the role of the CTRP family of hormones in physiological and disease states. We also aim to identify the receptors that mediate the biological functions of CTRPs.

The Robert Fitzgerald Laboratory studies cardiopulmonary physiology, especially cardiopulmonary control. We have focused in particular on the operation of the carotid body and the role of acetylcholine in its functioning. We have also examined the reflex effects of carotid body stimulation in various organs as well as the reflex response of ACTH and adrenal cortical hormones to hypoxic peripheral arterial chemoreceptor stimulation. We are currently interested in the spleen, as it is the only organ other than the lung that demonstrates increased vascular resistance in response to local hypoxia.

Our research aims to expand the understanding of how hormones regulate pancreatic islets in health and disease.

Currently, a major focus of the lab is to define the normal adaptations of islets, particularly insulin-producing beta-cells, to the metabolic stress of pregnancy, and to determine how defective adaptation contributes to gestational diabetes mellitus (GDM).

We anticipate that elucidating physiologic mechanisms of gestational beta-cell adaptation will identify novel therapeutic strategies to expand functional beta-cell mass which would help in the treatment of all types of diabetes.

Research in the Sherita Golden Lab focuses on identifying endocrine risk factors associated with the development of diabetes and cardiovascular disease. We conduct our research by incorporating measures of hormonal function into the design of clinical trials of cardiovascular risk modification, observational studies of incident cardiovascular disease and diabetes, and studies evaluating diabetic complications.

The Barouch Lab is focused on defining the peripheral cardiovascular effects of the adipocytokine leptin, which is a key to the understanding of obesity-related cardiovascular disease. Interestingly, many of the hormonal abnormalities seen in obesity are mimicked in heart failure. The research program will enhance the understanding of metabolic signaling in the heart, including the effects of leptin, exercise, sex hormones, and downstream signaling pathways on metabolism and cardiovascular function.

The lab also is working to determine the precise role of the “metabolic” beta-3 adrenergic receptor (ß3AR) in the heart and define the extent of its protective effect in obesity and in heart failure, including its role in maintaining nitric oxide synthase (NOS) coupling. Ultimately, this work will enable the exploration of a possible therapeutic role of ß3AR agonists and re-coupling of NOS in preventing adverse ventricular remodeling in obesity and in heart failure.

Lili Barouch, MD,... is an associate professor of medicine in the Division of Cardiology and a member of the Advanced Heart Failure and Cardiac Transplantation group at the Johns Hopkins University School of Medicine. view more