photo of Scammell, Thomas E

Thomas E Scammell, MD

Professor
Neurology
Contact Information
Office:   CL-0705
Phone:   617-735-3260
Fax:   617-735-3252
Email:   tscammel@bidmc.harvard.edu
Address:    330 Brookline Ave; CL-0705
 Boston, MA 02215
Advanced Degree And Training
Year Institution Area or Rank
1988 Univ Mass Medical School Medicine
1993 BIDMC Instructor
1998 BIDMC Assistant Professor
2003 BIDMC Associate Professor
Areas of Interest
3 Neuroscience      
Major Research Theme
       Our research focuses on the regulation of sleep and wakefulness, with an emphasis on understanding the neurobiology of narcolepsy. Orexin (hypocretin)-containing neurons of the hypothalamus promote wakefulness, and individuals with narcolepsy have a loss of these cells resulting in excessive daytime sleepiness.  One of our long-term goals is to identify the mechanisms regulating the activity of orexin neurons. We have found that these neurons are active during wakefulness, and we are now determining the neural and humoral factors that control this activity.  Using innovative neural tracing techniques, we are identifying the projections to the orexin neurons, and we are studying the behavior of orexin knockout mice to determine whether orexin influences the circadian timing of sleep/wake behavior.  To determine which brain regions mediate the wake-promoting effects of orexin, we have produced mice in which we can knock out or knock in orexin receptors within specific brain regions. Clinical studies include neuropathologic studies of the brains of people with narcolepsy, measurement of sleep-related changes in orexin concentration, and studies of metabolism and glucose regulation in narcolepsy.
External Recognition
Member NIH BRS study section 2007-2011
Member of the Board of Directors, Sleep Research Society, 2007-2010
Weitzman Award 2006
Grand Rounds: Yale University, 10/07;University of Toronto, 9/07; Brown University, 2/06; Boston Univ. 3/06; Univ. Penn 3/06; BIDMC 10/04, Univ. Mass 10/04
Invited lectures: University of Zurich,  3/08; WorldSleep07, Cairns Australia, 9/07; Netherlands Institute for Neuroscience, 2/08;Leiden University Medical Center, Netherlands, 1/08
Major Collaborative Activities
Collaboration with Brad Lowell to produce mice with inducible expression of orexin receptors.
Collaborations with Beth Klerman and Cecilia Diniz Behn to create mathematical models of sleep/wake behavior
Collaboration with Clif Saper to study hypothalamic mechanisms of sleep/wake regulation.
Collaboration with Alvaro Pascual-Leone to study incidence of substance abuse in narcolepsy
Investigator's Lab Web Site
Research Lab URL     None listed
Harvard Catalyst Site:     Scammell Harvard Catalyst Web Site