Biology | Penn Today

Long COVID brain fog may originate in a surprising place, say scientists

A study by Christoph Thaiss and Maayan Levy of the Perelman School of Medicine and colleagues finds that long COVID’s neurological symptoms, like brain fog, memory loss, and fatigue, may stem from serotonin reduction.

Long COVID research is in its ‘most hopeful’ phase yet

A study by Christoph Thaiss and Maayan Levy of the Perelman School of Medicine and colleagues suggests that serotonin could be a target for long COVID treatment.

A crucial pattern behind long COVID may have been identified

A study by Christoph Thaiss and Maayan Levy of the Perelman School of Medicine and colleagues suggests that several current hypotheses for the pathophysiology of long COVID are linked by a single pathway that is connected by serotonin reduction.

Study of serotonin levels offers hope for long COVID treatment

A study by Christoph Thaiss and Maayan Levy of the Perelman School of Medicine and colleagues finds that long COVID is associated with lower levels of circulating serotonin, which could be relevant for its neurological, cognitive, and memory symptoms.

New research links symptoms of long COVID to serotonin levels—and more

A study by Christoph Thaiss and Maayan Levy of the Perelman School of Medicine and colleagues shows that long COVID can deplete peripheral serotonin levels, offering a baseline for treatment with serotonin supplementation.

Conflicts and cultural evolution: All for one and one for all?

Researchers from the School of Arts & Sciences show that, when it comes to learning and honing different skills, what’s better for the individual isn’t always better for the group.

The brain-blood barrier’s role in governing ant behavior

New research from Penn Medicine uncovers a link between a single enzyme and complex social behaviors in ants.

Photograph of Cretian landscape overlooking a body of water.

Biophysics summer school in Crete

Eleni Katifori and Arnold Mathijssen spent a week in Crete, introducing students from Penn and other institutes to various topics and ideas in active biophysics research.

rendering of a brain and its different sections highlighted as different colors.

A link between memory and appetite in the brain to explain obesity

Penn Medicine researchers have found the hippocampal subnetwork, located within the memory center of the brain, is more dysregulated in patients with higher body mass indexes, leading to an inability to control or regulate eating habits.

students studying the galapagos, sitting on waterfront

Social ecology and community work in the Galápagos

Undergraduate and graduate students spent two months on San Cristóbal Island this summer, doing research on antibacterial resistance, vectors of disease, climate change adaptation, and the impact of climate change on mental health.

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