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X-WR-CALDESC:Events for Djavad Mowafaghian Centre for Brain Health | DMCBH
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DTSTART;TZID=America/Vancouver:20220401T110000
DTEND;TZID=America/Vancouver:20220401T120000
DTSTAMP:20260419T035036
CREATED:20210722T000000Z
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UID:3742-1648810800-1648814400@www.centreforbrainhealth.ca
SUMMARY:Dr. Bojana Stefanovic: Neurovascular unit dysfunction in a model of TBI
DESCRIPTION:Mild traumatic brain injury (mTBI) is the most common type of traumatic brain injury globally. Although its consequences may be short term\, mTBI often leads to long-term neuropsychiatric and neurological impairments and has been estimated to increase the probability of later life dementia up to six-fold. It is presently not clear what neuropathological changes underlie these deficits. This talk will review our recent studies on the sustained neurogliovascular unit function changes in a murine model of repeated\, mild traumatic brain injury. By leveraging two photon fluorescence microscopy\, intracerebral electrophysiological recordings\, optogenetics\, high field magnetic resonance imaging\, and light sheet fluorescence microscopy\, we reveal pronounced\, lasting\, and diffuse changes in the neuronal and cerebrovascular functional signals in situ\, accompanied by only subtle changes in histopathological readouts and no changes on conventional neuroimaging. Our studies suggest the potential of disinhibitory interventions to ameliorate peri-contusional neuronal and cerebrovascular tone and reactivity. In light of known import of functional hyperemia for healthy brain functioning\, normalization of the neurovascular unit function is likely key for decreasing the susceptibility of the concussed brain to subsequent pathologies. We expect sensitive in situ functional assays to be instrumental for development of such neurovascularly targeted interventions in the clinic. \nZoom option if unable to attend in person: \n\nZoom link here (click on “Join a meeting”)\nMeeting ID: 99412 188589\nPasscode: 188589
URL:https://www.centreforbrainhealth.ca/events/dr-bojana-stefanovic/
LOCATION:Rudy North Lecture Theatre\, Djavad Mowafaghian Centre for Brain Health\, 2215 Wesbrook Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
CATEGORIES:Neuroscience Research Colloquium
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220408T120000
DTEND;TZID=America/Vancouver:20220408T130000
DTSTAMP:20260419T035036
CREATED:20210722T000000Z
LAST-MODIFIED:20220414T185332Z
UID:3743-1649419200-1649422800@www.centreforbrainhealth.ca
SUMMARY:Dr. Shigeki Watanabe: Ultrafast recycling of synaptic vesicles
DESCRIPTION:In 1973 John Heuser and Tom Reese demonstrated that neurotransmitter was released from neurons via the fusion of neurotransmitter-filled vesicles with the cell membrane.  But at the same time\, these experiments launched a controversy that is unresolved today – do vesicles collapse into the membrane and are then recycled slowly on the order of 20 seconds? Or do they retain their existence – and reverse the pore in just 1 second\, as proposed in ‘kiss and run’ endocytosis?  Since then\, molecular pathways for fusion and recycling have been put forward\, but the field remains divided.  We have used channelrhodopsin to stimulate neurons in intact nematodes and in cultured hippocampal neurons.  The specimen is then frozen 15 ms to 20 seconds after the stimulus. To our surprise\, we observed a different form of vesicle recycling that is ultrafast\, in which membrane is endocytosed at lateral edges of active zones between 30-100 ms after stimulation.  The large endocytic vesicles then fuse to form an endosome and are resolved by clathrin into synaptic vesicles. Although rapid\, several molecules coordinately mediate ultrafast endocytosis. I will discuss the findings from the original studies and our current work on molecular mechanisms underlying ultrafast endocytosis. \nZoom option if unable to attend in person: \n\nZoom link here (click on “Join a meeting”)\nMeeting ID: 99412 188589\nPasscode: 188589
URL:https://www.centreforbrainhealth.ca/events/dr-shigeki-watanabe/
LOCATION:Rudy North Lecture Theatre\, Djavad Mowafaghian Centre for Brain Health\, 2215 Wesbrook Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
CATEGORIES:Neuroscience Research Colloquium
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220422T110000
DTEND;TZID=America/Vancouver:20220422T120000
DTSTAMP:20260419T035036
CREATED:20210722T000000Z
LAST-MODIFIED:20220414T185511Z
UID:3744-1650625200-1650628800@www.centreforbrainhealth.ca
SUMMARY:Dr. Pascal Kaeser: Mechanisms and Roles for Fast Dopamine Signaling
DESCRIPTION:Dopamine is a neuromodulator that codes information on various time scales. I will discuss recent progress on the identification of fast release mechanisms for dopamine in the mouse striatum. I will present data on triggering mechanisms of dopamine release and evaluate its roles in striatal regulation. In the long-term\, our work will allow for a better understanding of the mechanisms and time scales of dopamine coding in health and disease. \n“Live Screening” in Rudy North Lecture Theatre\nZoom details if unable to attend in person: \n\nZoom link here (click on “Join a meeting”)\nMeeting ID: 99412 188589\nPasscode: 188589
URL:https://www.centreforbrainhealth.ca/events/dr-pascal-kaeser/
LOCATION:Rudy North Lecture Theatre\, Djavad Mowafaghian Centre for Brain Health\, 2215 Wesbrook Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
CATEGORIES:Neuroscience Research Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220429T110000
DTEND;TZID=America/Vancouver:20220429T120000
DTSTAMP:20260419T035036
CREATED:20210722T000000Z
LAST-MODIFIED:20220315T212653Z
UID:3745-1651230000-1651233600@www.centreforbrainhealth.ca
SUMMARY:Dr. Nelson Spruston: Neurophysiological mechanisms of memory guided behavior
DESCRIPTION:Mammals use a sophisticated\, multi-regional memory system to guide behavior. A major goal of neuroscience is to understand the mechanisms—ranging from molecular to cellular to systems—that make this possible. Spruston will describe recent results from his lab using mouse behavior\, patch-clamp recording\, imaging\, and RNA-seq\, which collectively seek to elucidate how a diverse and complex population of neurons in the hippocampus allow mice to perform sophisticated memory guided behaviors. \nZoom option if unable to attend in person \n\nZoom link here (click on “Join a meeting”)\nMeeting ID: 99412 188589\nPasscode: 188589
URL:https://www.centreforbrainhealth.ca/events/dr-nelson-spruston/
LOCATION:Rudy North Lecture Theatre\, Djavad Mowafaghian Centre for Brain Health\, 2215 Wesbrook Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
CATEGORIES:Neuroscience Research Colloquium
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