A Jamaican medicinal-plant scientist explores his African roots

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A Jamaican medicinal-plant scientist explores his African roots
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Damian Cohall’s studies of traditional medicine have sprouted new ideas for diabetes treatment and cross-Atlantic collaboration.

). Another, the Madagascar periwinkle , is the source of vinca alkaloids, compounds that include the cancer drugs vinblastine and vincristine. My group is testing extracts from that plant for anti‑diabetic properties, using a rat model. The compounds inhibit the enzyme DPP‑4, keeping it from disrupting insulin production.

I’m wearing a dashiki I got as a gift from the University of Cape Coast in Ghana when I visited in July to discuss opportunities for south-to-south, cross-Atlantic collaboration. It was my first visit to the African continent. We’re developing the Transatlantic Centre of Excellence for Translational Research; an early project will test whether a compound from the bark of a West African tree can treat foot ulcers in people with diabetes.

The dashiki symbolizes both my scientific journey and my rediscovery of self, in trying to understand what transpired before enslavement. When I started studying plants and their historical uses, I realized there was a greater mission — to understand the culture of our ancestors. West Africans had a major impact on Caribbean herbal practices, through generations of slavery and colonization to now.

I’m using ethnopharmacology to try to change the narrative on what traditional medicine is: to show that it is indeed scientific, and always has been.

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