Obesity is a major public health problem that affects approximately 30% of US adults. There is a growing body of evidence supporting the idea that obesity-induced metabolic stress is associated with significant neural and cognitive deficits in addition to its negative impacts on the rest of body, and that these cognitive deficits often increase with age.
We previously demonstrated that metabolic stressors induced by obesity lead to similar biochemical, morphological, electrophysiological and behavioral phenotypes as those seen in animal models of dementia or Alzheimer’s disease (AD).
Moreover, we have shown that these phenotypic changes are associated with the loss of inositol polyphosphate multikinase (IPMK) in the cortex and hippocampus, suggesting that the loss of this nutrient sensing protein contributes to these phenotypes.
One of the long-term objectives of this laboratory is to determine the cellular underpinnings of metabolic stress-induced cognitive dysfunction, with the ultimate goal of developing novel interventions.
Other relevant projects include:
SREBP (a master regulator of lipid synthesis) in postmortem brain from Schizophrenia patients. SREBP protein level is extremely reduced in Schizophrenia patient brain. (Yong et al, Mol Neuro, 2016)
Synaptic "pathology" due to subchronic High Fat Diet (HFD). Hippocampal sections from normal chow and HFD-fed mice, immunolabeled for postsynaptic and presynaptic enriched proteins. (Arnold et al, Neurobiology of Diseases, 2014)