New Therapy Fights Uncommon Instances of Vaccine-Linked Blood Clots


THURSDAY, June 10, 2021 (HealthDay Information)

Very not often, blood clots can develop after COVID-19 vaccination, and medical doctors in Canada describe a brand new check and remedy for the situation in a case research of three sufferers.

All three developed the situation known as vaccine-induced immune thrombotic thrombocytopenia (VITT) after receiving the AstraZeneca vaccine.

Two developed blood clots of their legs, and the third had blood clots blocking arteries and veins contained in the mind, based on researchers at McMaster College in Ontario.

The sufferers recovered after receiving remedy that mixed anti-clotting medication and excessive doses of intravenous immunoglobulin.

The research was printed June 9 within the New England Journal of Medication.

“If you happen to had been a affected person with VITT, I would be telling you we all know of a remedy strategy. We are able to diagnose it precisely with our checks, deal with it and we all know precisely how the remedy works,” mentioned research writer Ishac Nazy, scientific director of the McMaster Platelet Immunology Laboratory.

“Our job is to grasp this illness mechanism so we will enhance analysis and affected person administration. This research brings collectively profitable lab diagnostics and affected person care. It is a true translational medication strategy, which is basically our forte, bench-side to bedside,” Nazy mentioned in a college information launch.

VITT happens when antibodies assault a blood protein known as platelet issue 4 (PF4). This prompts platelets within the blood, inflicting them to clump collectively and kind clots, the research authors defined.

Blood samples taken from the three sufferers after remedy confirmed decreased antibody-mediated platelet activation in all of them.

The McMaster crew developed an efficient VITT check and remedy by constructing on their earlier analysis of heparin-induced thrombocytopaenia (HIT). The 2 situations are related, however utilizing a regular HIT antibody check to detect VITT can yield false damaging outcomes.

The researchers modified the HIT check to detect VITT-specific antibodies present in uncommon circumstances of sufferers who’ve obtained a COVID-19 vaccine.

“We now perceive the mechanism that results in platelet activation and clotting,” Nazy mentioned.

Extra info

The U.S. Facilities for Illness Management and Prevention has extra on COVID-19 vaccines.

SOURCE: McMaster College, information launch, June 9, 2021

Robert Preidt


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