Early pregnancy exposure to heat and cold linked to differences in fetal size at 12 weeks
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Updates every hour. Last Updated: 19-Jun-2026 07:15 ET (19-Jun-2026 11:15 GMT/UTC)
Periprosthetic joint infection (PJI) is a devastating complication of joint replacement surgery. A new study in the Journal of Sport and Health Science discovers that musclin, a hormone released by muscles during exercise, directly binds to macrophages. This interaction rewires cellular metabolism, significantly boosting the macrophages' ability to clear dead cells (efferocytosis). This process effectively resolves inflammation, reduces bacterial burden, and promotes tissue repair, offering a promising "exercise-mimetic" therapeutic strategy for managing implant-associated infections.
New research from the Colombian Andes shows that conserving forest cover across coffee‑growing landscapes is essential for sustaining diverse bird communities, even more than farm‑level shade tree management alone. The study, conducted by ecologists with SELVA and the Smithsonian’s National Zoo and Conservation Biology Institute, examined how both landscape composition and local vegetation structure influence bird habitat use in one of the world’s most important coffee‑producing regions.
• Published in Nature, the team led by Dr. Toni Gabaldón used the MareNostrum supercomputer to reconstruct the genetic origin of the last common ancestor of all eukaryotes—the cellular lineage to which animals, plants, fungi, and protists belong. • The study challenges the idea that cellular complexity emerged from a single evolutionary encounter, pointing instead to a gradual process of interactions among different microorganisms that lasted for millions of years. • The findings identify contributions from several bacteria, in addition to the one that gave rise to the mitochondria, and suggest that giant viruses may have acted as vehicles for genetic transfer.