Affairs of the (Zebrafish) Heart: Dr. Michelle Collins
Release Date: 01/22/2023
In the Trenches: Dr. James Stempien on Emergency Medicine
Researchers Under the Scope
James Stempien (MD) has navigated some of the most challenging corners of emergency medicine, from the frigid isolation of Inuvik to the bustling corridors of Saskatoon’s emergency departments. His experience in low-tech outposts has shaped his approach to modern emergency care. “When things aren’t going well you see it in the emergency department first,” Stempien said. “We’re the front door. We’re always open.” As provincial department head of emergency medicine, Stempien sees patients on their worst days in hospitals bursting at the seams, struggling to...
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All’s Not Lost: A Roadmap to Treating Hepatitis C on the Prairies
Researchers Under the Scope
As the world aims to eradicate hepatitis C (HCV) by 2030, Carrielynn Lund and Dr. Alexandra King’s team created a how-to guide. is a step-by-step guide to tackling a spike of new infections across the three Canadian prairie provinces. Hepatitis C (HCV) causes severe liver disease, and was notoriously difficult to treat until the introduction of direct-acting antivirals a decade ago — antivirals which boast a remarkable 95% success rate. Despite this advancement, Lund and Dr. King say Saskatchewan, Alberta and Manitoba need to know why HCV cases keep rising, particularly in...
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Exercise Your Right to Breathe: Dr. Brianne Philipenko & Asthma
Researchers Under the Scope
Brianne Philipenko (MD) was midway through her respirology fellowship in Calgary when the Covid-19 pandemic shut down the city. She started interval workouts at home using Nike’s fitness app — when inspiration struck. “Coming up with a creative, innovative way to allow people to access an exercise program outside of the typical organized pulmonary rehabilitation in a gym setting was something that I became really interested in,” said Philipenko.. As a respirologist, Philipenko was already frustrated by the lack of ‘mainstay’ guidelines on incorporating exercise...
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Dr. Sarah Forgie: Why the New Dean of Medicine Taught Herself the Ukelele
Researchers Under the Scope
In this episode, we gain insight into Dr. Sarah Forgie, the new Dean of the College of Medicine. She discusses her innovative teaching methods, her career as a pediatric infectious disease specialist, and her vision for advancing Saskatchewan’s College of Medicine. Dr. Forgie also shares the story behind her decision to learn the ukulele. Born to family physicians, Dr. Forgie grew up in Lynn Lake, Manitoba, a remote fly-in mining community. Her family later relocated to Winnipeg, where Dr. Forgie credits much of her motivation to her mother, who encouraged her to pursue both medicine and...
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Grey Area: Dr. John Howland on Cannabis & Budding Brains
Researchers Under the Scope
A behavioural neuroscientist in Saskatoon is uncovering marijuana’s effects on fetal brain development. After recently winning a five-year CIHR grant of $960,076 in the spring of 2024, Dr. John Howland’s lab at the University of Saskatchewan is expanding its work examining prenatal exposure to cannabis smoke. Howland’s teams will assess the way cannabis exposure alters higher brain functions like memory and learning in both rats and mice. Compared to cannabis injections in the past, the professor of Anatomy, Physiology and Pharmacology at the College of Medicine said exposing...
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Innovating and Bridging Gaps in IBD Care: Dr. Juan-Nicolás Peňa-Sánchez
Researchers Under the Scope
Growing up in Columbia had a profound impact on Dr. Juan-Nicolas Pẽna-Sànchez. In this episode, hear why the former family physician pivoted, becoming Saskatchewan's lead in finding the best ways to treat Crohn's disease and ulcerative colitis in rural and Indigenous patients. Even as a teenager, Juan-Nicolás Peña-Sánchez could see stark differences in health for those who had medical coverage — and those without, thanks to his stepfather, an emergency department physician. “I used to go with him sometimes on shifts to learn and shadow him,” said Peña-Sánchez said. “The...
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Cuts Like a NanoKnife: Dr. Mike Moser
Researchers Under the Scope
"When I got into medical school, the last thing in the world I wanted to be was a surgeon because I couldn't stand the sight of blood," said Dr. Mike Moser. Fast-forward to the present day, where Moser is now one of Saskatchewan's top kidney transplant surgeons, winning last year's Golden Scalpel Award for Pre-clerkship Education, the 2022 Logan Boulet Humanitarian of the Year Award, and numerous teaching awards. In this episode, the professor of general surgery at the University of Saskatchewan's College of Medicine takes us back to one pivotal day where everything changed, propelling...
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Walking the Talk: Dr. Daniel Fuller on Urban Health and Mobility
Researchers Under the Scope
As an undergrad, Daniel Fuller didn’t have a car, nor was he keen on taking the bus. “I rode my bike to university every day in the fall and then just kept on going and never stopped,” said Fuller, a former national and international canoe/kayak athlete. As he pedaled, Fuller watched the way people used trails, sidewalks and roads. “I really started to get into active transportation, how people move around cities and how we can get people active -- outside of the sport environment,” said Fuller, now an associate professor in Community Health and...
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Anatomy of Success: Three Researchers, Three Grants, One Goal
Researchers Under the Scope
From the laboratory to saving lives, this episode brings together three outstanding researchers from the University of Saskatchewan’s Department of Anatomy, Physiology, and Pharmacology (APP) as they discuss their work and its implications for cardiac care. Dr. Michelle Collins, Dr. Scott Widenmaier, and Dr. Changting Xiao are all recent recipients of research grants from Heart & Stroke (formerly the Heart and Stroke Foundation of Canada). In Canada, one per cent of newborns have congenital heart defects. Thanks to advances in cardiac care, up to 85 per cent of these...
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Dr. Jacob Alhassan and the Politics of Expendability
Researchers Under the Scope
"Pushing politicians to do what is good for the health of the people, there's no way around it," said Dr Jacob Alhassan. Born and raised in a rural Ghanaian village, Alhassan grew up without electricty and paved roads. He watched women die in childbirth. He grew resentful of health systems that left the poorest people to fend for themselves, while the rich thrived. Alhassan decided to take action. At first, he thought he would study hard to become a local hospital administrator. Partway through his university years, Alhassan began to dream even bigger. In this episode, he looks back at his...
info_outlineIf you've ever sat through a bad date at a restaurant, unsure of what to order, you're still doing better than a typical zebrafish date.
Dr. Michelle Collins said without safety precautions, a zebrafish male and female left together overnight often eat their embryos.
The assistant professor of Anatomy, Physiology and Pharmacology at the University of Saskatchewan's College of Medicine has studied zebrafish for years, using them as a model to examine genetic factors in cardiac development.
"They're actually quite beautiful," she said. "The embryos look almost like a crystal ball."
In this episode, Collins takes us inside her laboratory, where she breeds both typical and genetically modified zebrafish, to better understand irregularities inside the human heart.
"We start to see some early changes in the developing heart that just get worse as the fish ages," she said.
"You start to see that the heart chambers aren't really contracting properly, they're very arrhythmic," said Collins. "They really model what a person that has something like atrial fibrilation would be experiencing later on in life."
In December, Collins published her most recent findings in the Journal of Cardiovascular Development and Disease, noting the public health implications for humans with similar patterns of abnormal heart development.
Her interest in calcium stores, and the way they're regulated in ion channels led her to Discovery Grants last year of nearly $200,000 from the Natural Sciences and Engineering Council of Canada (NSERC).
Collins' first microscope was a Christmas gift. By the fourth grade, she was running experiments at home, thanks to a book from her grandparents
"I had some really great science teachers that really helped propel me into scientific research," said Collins, who became curious about developmental biology.
Today, she works with real-time video feeds, using a high-powered microscope that allows her and her team members to observe zebrafish hearts at up to 150 frames per second, producing detailed video images of the vascular system in fluorescent colour.
"It's very gentle on live samples, which is really instrumental to what we do because we want to look at a beating heart. We don't want to blast it with lasers," said Collins.
"We have this sort of a spinning disc, which allows less phototoxicity from the laser, and it also can acquire movies really quickly," she added.
Her hope is to one day match mutations in the zebrafish genes with mutations in patients with genetic heart defects.
"Can we use these new genes that we've identified to screen patients and figure out if this could be an underlying cause of their cardiac arrhythmia?"