11 results match your criteria: "Hurvitz Brain Sciences Centre[Affiliation]"

Palliative care (PC) aims to enhance the quality of life for patients when confronted with serious illness. As stroke inflicts high morbidity and mortality, the integration of PC within acute stroke care remains an important aspect of quality inpatient care. However, there is a tendency to offer PC to stroke patients only when death appears imminent.

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Reduction of alpha-synuclein oligomers in preclinical models of Parkinson's disease by electrical stimulation in vitro and deep brain stimulation in vivo.

Brain Stimul

April 2024

Krembil Research Institute, Toronto Western Hospital, University Health Network, Toronto, ON, Canada; Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada; CenteR for Advancing Neurotechnological Innovation to Application (CRANIA), Toronto, Ontario, Canada. Electronic address:

Article Synopsis
  • Deep brain stimulation (DBS) is commonly used to alleviate symptoms of movement disorders like Parkinson's disease (PD), but its effects on the accumulation of harmful proteins in neurodegeneration are not fully understood.
  • This study investigated how high-frequency electrical stimulation affects levels and clustering of the protein alpha-synuclein (α-Syn), which is linked to the loss of brain cells in PD.
  • The findings revealed that high-frequency stimulation reduced both mutant α-Syn levels and its harmful clumping in neurons, suggesting that DBS may not only treat symptoms but could also modify the disease by targeting pathological proteins.
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What do we know about astrocytes and the antidepressant effects of DBS?

Exp Neurol

October 2023

Sunnybrook Research Institute, Harquail Centre for Neuromodulation, Hurvitz Brain Sciences Centre, Toronto, Canada; Division of Neurosurgery, University of Toronto, Toronto, Canada. Electronic address:

Article Synopsis
  • Treatment-resistant depression (TRD) affects millions and has led to the exploration of deep brain stimulation (DBS) as a possible therapy, although its effectiveness and mechanisms are still debated.
  • Astrocytes, once thought to merely support neurons, are now known to play critical roles in brain health, inflammation, and the regulation of neurotransmission, with a noted decrease in their function observed in depression.
  • Research indicates that DBS might positively influence astrocytic activity, potentially enhancing its antidepressant effects by modulating neurotransmitter release and reducing neuroinflammation, as evidenced by preclinical studies.
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Objective: Despite advances in the treatment of psychiatric diseases, currently available therapies do not provide sufficient and durable relief for as many as 30-40% of patients. Neuromodulation, including deep brain stimulation (DBS), has emerged as a potential therapy for persistent disabling disease, however it has not yet gained widespread adoption. In 2016, the American Society for Stereotactic and Functional Neurosurgery (ASSFN) convened a meeting with leaders in the field to discuss a roadmap for the path forward.

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Evaluating the Effectiveness of the SPIKES Model to Break Bad News - A Systematic Review.

Am J Hosp Palliat Care

November 2023

Division of Palliative Care, Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada.

: Breaking bad news to patients and families can be challenging for healthcare providers. The present study conducted a systematic review of the literature to determine if formal communication training using the SPIKES protocol improves learner satisfaction, knowledge, performance, or system outcomes. : MEDLINE, Embase, CINAHL Plus (Nursing & Allied Health Sciences), and PsycINFO Databases were searched with keywords BAD NEWS and SPIKES.

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The use of deep brain stimulation (DBS) for the treatment of chronic pain was one of the first applications of this technique in functional neurosurgery. Established brain targets in the clinic include the periaqueductal (PAG)/periventricular gray matter (PVG) and sensory thalamic nuclei. More recently, the anterior cingulum (ACC) and the ventral striatum/anterior limb of the internal capsule (VS/ALIC) have been investigated for the treatment of emotional components of pain.

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Neurochemical mechanisms of deep brain stimulation for depression in animal models.

Eur Neuropsychopharmacol

March 2023

Harquail Centre for Neuromodulation, Sunnybrook Health Sciences Centre, Sunnybrook Research Institute, Toronto, ON M4N 3M5, Canada; Hurvitz Brain Sciences Centre, Sunnybrook Research Institute, Toronto, ON M4N 3M5, Canada; Division of Neurosurgery, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON M4N 3M5, Canada. Electronic address:

Deep brain stimulation (DBS) has emerged as a neuromodulation therapy for treatment-resistant depression, but its actual efficacy and mechanisms of action are still unclear. Changes in neurochemical transmission are important mechanisms of antidepressant therapies. Here, we review the preclinical DBS literature reporting behavioural and neurochemical data associated with its antidepressant-like effects.

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Traumatic brain injury (TBI) has been associated with several lasting impairments that affect quality of life. Pre-clinical models of TBI have been studied to further our understanding of the underlying short-term and long-term symptomatology. Neuromodulation techniques have become of great interest in recent years as potential rehabilitative therapies after injury because of their capacity to alter neuronal activity and neural circuits in targeted brain regions.

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Sex differences in long-term fear and anxiety-like responses in a preclinical model of PTSD.

J Psychiatr Res

July 2022

Harquail Centre for Neuromodulation, Sunnybrook Health Sciences Centre, Sunnybrook Research Institute, Toronto, ON, M4N 3M5, Canada; Hurvitz Brain Sciences Centre, Sunnybrook Research Institute, Toronto, ON, M4N 3M5, Canada; Division of Neurosurgery, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, M4N 3M5, Canada. Electronic address:

With a high prevalence of posttraumatic stress disorder (PTSD) in females, studying sex differences in preclinical models is of substantial importance. We have previously employed behavioural criteria to identify and characterize a subpopulation of rats that presented impaired fear extinction and long-term fear and anxiety responses following fear conditioning. We now exposed male and female rats to fear conditioning and extinction and segregated the animals into weak- (WE) and strong-extinction (SE) groups based on behavioural scores during extinction.

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Validity of the Center for Epidemiological Studies Depression scale in Type 2 diabetes.

J Psychosom Res

November 2016

University of Toronto, Department of Pharmacology and Toxicology, Canada; Sunnybrook Research Institute, Hurvitz Brain Sciences Centre, Canada; University Health Network Toronto Rehabilitation Institute, Cardiac Rehabilitation Program, Canada. Electronic address:

Objective: Depressive symptoms are common among people with Type 2 diabetes mellitus (T2DM). This study aimed to validate the 3-factor structure of the 14-item Center for Epidemiological Studies Depression (CES-D) scale proposed by Carleton et al. (2013) in a T2DM population.

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