Novel roles and regulatory factors: The lab has identified novel roles of chemokines in differentiated neurons, such as regulation of neuronal-glial communication, neurotransmission, and excitotoxicity. These findings elucidated some of the molecular players that lead to neuronal injury. By revealing the link of certain chemokine receptors to neuronal survival and function, these discoveries have been instrumental in predicting potential consequence of chemokine alteration or manipulation under normal and pathological conditions, and in the exploration of new therapeutic approaches to reduce neuroinflammation and neuronal damage in the adult brain.
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Despite the benefits of current antiretroviral treatments, the neurological complications of HIV infection remain an important and unmet medical and social need. Drug abusers, particularly injection drug users, represent a significant group of HIV-infected patients. These individuals, whose adherence to antiretroviral therapy is generally poor, often present with a more dramatic progression to AIDS and neuroAIDS. Opiates can accelerate HIV neuropathology by acting on immune and neural cells; however, the mechanisms involved are unclear. Characterization of these mechanisms will yield new insights for the development of neuroprotective therapies in HIV patients.
Discoveries concerning the regulation of the CXCR4 chemokine receptors by opiates, including morphine, have revealed unexpected factors responsible for HIV neuropathology that may be particularly relevant to the HIV+ population of drug users. Importantly, these studies have unveiled a novel function of the iron storage protein ferritin heavy chain, which may have much larger implications both within and outside the CNS.
Visiting Research Associate
Long-term collaborative studies with Dr. Alessandro Fatatis (College of Medicine) have focused on the role of the chemokine receptor CX3CR1 in skeletal metastasis. Work with other collaborators (Dr. Benovic at Thomas Jefferson University and Dr. Rubin at Washington University in St. Louis) has examined alterations of CXCR4 signaling in cancer cells. These efforts have recently led to the generation of patented small molecule compounds (synthesized by Dr. Salvino, College of Medicine) that show promise for the treatment of skeletal metastasis in breast and prostate cancer patients.
Research Assistant Professor
In January, 2016, Dr. Meucci was promoted to Departmental Chair for the Department of Pharmacology and Physiology.
Olimpia Meucci, MD, PhD
Professor & Chair
Department of Pharmacology and Physiology
Department of Microbiology & Immunology
Drexel University College of Medicine
245 North 15th Street, NCB room #8221
Philadelphia, PA 19102
office phone: (215) 762-2597
lab phone: (215) 762 4138
fax: (215) 762-2299