Vascular Research Reveals Link to ASD Symptoms

Restoring the proper function of endothelial cells in the brain may offer a novel way to alleviate behavioral symptoms connected to autism spectrum disorder (ASD), according to new research published in the journal Neuron (DOI: 10.1016/j.neuron.2026.09.009).

Led by former doctoral student Julie Ouellette, the study examined how vascular dysfunction during early brain development impacts later behavior. Endothelial cells typically enable blood to swiftly reach active areas of the brain. However, in models featuring autism-associated mutations, such as the 16p11.2 deletion, these cells fail to react with sufficient speed.

Early Brain Development and Next Steps

The research links this early vascular impairment directly to later behavioral issues, including motor learning difficulties, repetitive movements, and hyperactivity. Identifying a method to restore appropriate endothelial cell activity presents a potential approach to treating these symptoms.

For inquiries regarding the study, Senior Communications Specialist Amelia Buchanan at the Ottawa Hospital Research Institute serves as the media contact at 613-297-8315 or ambuchanan@ohri.ca.

Wastewater Analysis Highlights Divergent Regional Substance Trends

Data gathered by Statistics Canada between January 2024 and March 2026 demonstrates that drug consumption patterns vary dramatically depending on the municipality. By testing chemical byproducts excreted after the body metabolizes drugs, researchers analyzed wastewater collected during one-week windows every two months across catchments serving approximately 9.2 million people.

Sianne Kuang, an analyst with StatCan, noted that while the sampling does not detail exact individual consumption or user counts, it functions as a reliable proxy for drug consumption within a treatment plant’s service area. Experts point to local production and trafficking networks as major drivers of these geographic variations.

Methamphetamine and Cocaine Peaks in Western and Prairie Regions

Prince Albert, Sask., registered the highest methamphetamine concentrations among all monitored locations, alongside the sharpest fluctuations in both methamphetamine and cocaine. In March 2026, Prince Albert recorded an estimated methamphetamine load of 2,003 milligrams per 1,000 people daily, compared to roughly 214 milligrams in Toronto. Saskatoon and Edmonton also posted elevated methamphetamine levels, with Edmonton reaching approximately 1,071 milligrams per 1,000 people daily in January 2025 before adjusting to 624 in March 2026.

Regarding cocaine levels, Prince Albert measured approximately 5,296 milligrams per 1,000 people per day in March 2026, which was roughly three times the level recorded in Halifax. In Atlantic Canada, toxicological trends differed markedly by province in 2024; cocaine was implicated in 86 per cent of Nova Scotia’s stimulant-related deaths, while methamphetamine was involved in 63 per cent of New Brunswick’s stimulant toxicity deaths. Moncton joined the wastewater tracking program in March 2025, recording 1,734 milligrams of cocaine and a study-low 56 milligrams of methamphetamine per 1,000 people daily by March 2026.

Fentanyl Tracking and East Coast Party Drug Indicators

Metro Vancouver consistently registered the highest fentanyl readings of the eight monitored municipalities, though average levels declined in 2025 and early 2026 alongside a drop in local unregulated drug fatalities. Kora DeBeck, a professor at Simon Fraser University’s School of Public Policy, emphasized that initial fentanyl usage was driven by market arrival rather than consumer demand. University of Alberta addiction physician and researcher Dr. Monty Ghosh noted that varying local manufacturing formulas and unmeasured fentanyl variants mean wastewater data should not be interpreted in isolation.

Further east, Toronto recorded the lowest methamphetamine levels among major centers, but held the highest average MDMA concentration at around 40 milligrams per 1,000 people per day between July 2024 and March 2026. Montreal exhibited a profile similar to Toronto regarding higher MDMA and lower methamphetamine levels, while consistently testing lowest for prescription opioids like codeine, methadone, oxycodone, and morphine. StatCan reminded the public that temporary population shifts from commuting, tourism, and special events can introduce uncertainties into wastewater estimates.

Demonstrations Erupt Nationwide Over Federal Policy Changes

Demonstrators gathered in Vancouver and across Canada on Sunday to challenge federal measures aimed at curbing the nation’s temporary resident population. The rallies, organized by the Migrant Rights Network across 11 locations including British Columbia, Ontario, Quebec, and Prince Edward Island, occurred just ahead of Parliament’s resumption.

Federal policy changes introduced in 2024 have established tighter regulations for temporary foreign workers and set caps on study permits. The government aims to shrink non-permanent residents from a peak of 7.6 per cent of the population in October 2024 to below five per cent by late 2027, citing pressure on healthcare, housing, and public services. Parliamentary Budget Officer data shows net inflows of non-permanent residents reached nearly 800,000 in 2023.

Local Rallies Highlight Community Impacts

In Vancouver, advocates and residents assembled at Memorial South Park, symbolically bashing a piñata representing Bill C-12, recent federal legislation tightening asylum and immigration rules. Local rally participants expressed deep concern that shifting federal policies leave workers facing deportation, expiring permits, and difficult working conditions despite having followed official processes.

Organizers are urging Ottawa to provide permanent status to migrants currently in the country, auto-renew study and work permits, halt deportations, and eliminate employer-tied permits. Campaign materials from the Migrant Rights Network argued that blaming migrants fails to address rising rents, healthcare pressures, or wage issues, warning that policy shifts risk dividing workers.