Full Text Journal Articles by
Author Christopher A Guevara

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Chronic food restriction enhances dopamine-mediated intracranial self-stimulation.

Federico G Gnazzo, Devry Mourra, Christopher A Guevara, Jeff A Beeler,

Dopamine-mediated reinforcement and behavioral adaptation is essential to survival. Here, we test the effects of food restriction on dopamine-mediated learning and reinforcement using optical intracranial self-stimulation (oICSS), an optogenetic version of conventional electrical ICSS (also known as brain stimulation reward, BSR). Using mouse genetic lines to express channelrhodopsin selectively in ... Read more >>

Neuroreport (Neuroreport)
[2021, 32(13):1128-1133]

Cited: 0 times

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Non-Motor Symptoms of Parkinson's Disease: The Neurobiology of Early Psychiatric and Cognitive Dysfunction.

Ayan Hussein, Christopher A Guevara, Pamela Del Valle, Swati Gupta, Deanna L Benson, George W Huntley,

Parkinson's disease (PD) is a progressive neurodegenerative disorder that has been recognized for over 200 years by its clinically dominant motor system impairment. There are prominent non-motor symptoms as well, and among these, psychiatric symptoms of depression and anxiety and cognitive impairment are common and can appear earlier than motor ... Read more >>

Neuroscientist (The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry)
[2021, :10738584211011979]

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LRRK2 mutation alters behavioral, synaptic, and nonsynaptic adaptations to acute social stress.

Christopher A Guevara, Bridget A Matikainen-Ankney, Nebojsa Kezunovic, Katherine LeClair, Alexander P Conway, Caroline Menard, Meghan E Flanigan, Madeline Pfau, Scott J Russo, Deanna L Benson, George W Huntley,

Parkinson's disease (PD) risk is increased by stress and certain gene mutations, including the most prevalent PD-linked mutation <i>LRRK2</i>-G2019S. Both PD and stress increase risk for psychiatric symptoms, yet it is unclear how PD-risk genes alter neural circuitry in response to stress that may promote psychopathology. Here we show significant ... Read more >>

J Neurophysiol (Journal of neurophysiology)
[2020, 123(6):2382-2389]

Cited: 3 times

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Cyfip1 Regulates SynGAP1 at Hippocampal Synapses.

Abhishek Sahasrabudhe, Fatema Begum, Christopher A Guevara, Chenel Morrison, Kuangfu Hsiao, Nebojsa Kezunovic, Ozlem Bozdagi-Gunal, Deanna L Benson,

In humans, copy number variations in <i>CYFIP1</i> appear to have sweeping physiological and structural consequences in the brain, either producing or altering the severity of intellectual disability, autism, and schizophrenia. Independently, <i>SynGAP1</i> haploinsufficiency produces intellectual disability and, frequently, autism. Cyfip1 inhibits protein translation and promotes actin polymerization, and SynGAP1 is ... Read more >>

Front Synaptic Neurosci (Frontiers in synaptic neuroscience)
[2020, 12:581714]

Cited: 1 time

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Microglia and Reactive Oxygen Species Are Required for Behavioral Susceptibility to Chronic Social Defeat Stress.

Christopher A Guevara, Pamela Del Valle, Cynthia R Mercedes,

J Neurosci (The Journal of neuroscience : the official journal of the Society for Neuroscience)
[2020, 40(7):1370-1372]

Cited: 0 times

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