Neural Injury and Reorganization

Carole LaMotte, Ph.D.

Current Research Program

The major focus of my laboratory research is the reorganization of neural circuits following lesions, specifically in terms of new synaptic connections, alterations in neurotransmitters, changes in receptor density and location, roles of neurotrophins and guidance factors, and alterations in postsynaptic targets. Our two models of study are changes in sensory systems of the spinal cord after spinal or root trauma, and, in future collaborations with Dr. deLanerolle, hippocampal organization in epilepsy.

The spinal cord studies are supported by two grants. In collaboration with Robert LaMotte, combined physiological and immunohistochemical approaches are being used to investigate changes of neuronal and neuronal dorsal root ganglion cells in response to compression or to partial root injury. This work is supported by the Spinal Cord Injury Center Grant (C. Greer, Program Director). An NIH RO1 grant (C. LaMotte, PI) funds research on the effects of neurotrophins and antibodies to neurotrophins on sprouting of normal afferents in the spinal cord after sciatic deafferentation (using the pronase model developed in this laboratory).

A third project, related to the study of pain mechanisms, was initiated in collaboration with Dr. Jerry Collins, Dept of Anesthesiology. Sponsored by Adolor Corporation, we are developing a model of second degree burn in rat skin, and will use this model to screen peripherally acting analgesic drugs against pain assoicated with decond degree thermal burn.

Relationship of Research to Neurological Disease

These studies contribute to the Neurosurgery department's two major program projects targeting spinal cord injury and epilepsy. In addition, independent funding of part of these studies permits further exploration of new ideas and approaches.

The reorganization of neural circuits in response to spinal cord injury or as part of the process of epileptic discharge is considered to be critical to both the process of recovery and to the frequent development of abnormal activity and secondary symptoms. Understanding the changes that occur and the underlying mechanisms are intended to be a major step in the development of preventive and restorative treatments of the devastating effects of neural injury.

Dr. LaMotte can be reached at 203-785-2598
or email to carole.lamotte@yale.edu


Neurosurgery Faculty/Program Menu

Department of Neurosurgery address and phone number


http://info.yale.med.edu/surgery/neurosur/neuropsycho.html
credits