Opioids

Recent articles

Howard Fields.

In memoriam: Howard Fields, pain research pioneer

Over six decades, Fields mapped out the circuits of both pain and addiction.

By Natalia Mesa
22 May 2026 | 7 min read
Research image of enteric neurons in zebrafish.

Opioid receptors may guide formation of gut nervous system in zebrafish

Fish lacking functional copies of the receptors have fewer enteric neurons than usual, but the findings await further validation.

By Olivia Gieger
26 June 2024 | 4 min read

Explore more from The Transmitter

Neuronal genes SATB2 and MEF2C.

Nuclear location helps control gene activity during brain development

A study of developing human brain tissue suggests that genes switch on more strongly when they move from the nucleus’s edge toward structures that contain proteins involved in making and processing RNA.

By Giorgia Guglielmi
20 August 2026 | 4 min read
Cortical organoids.

Five-year-old human brain organoids aged on schedule

The cultured spheres typically mimic only prenatal development, but the five-year-old ones grown in Paola Arlotta’s lab acquired postnatal features.

By Claudia López Lloreda
19 August 2026 | 5 min read