3 ms·

Black widow venom contains more than just neurotoxin, but also toxins that attack the tissue. Besides, the main components of the venom of the spider are colla

by refurb 4y ago

Black widow venom contains more than just neurotoxin, but also toxins that attack the tissue. Besides, the main components of the venom of the spider are collagenase, protease, phospholipase, hyaluronidase, neurotoxin, and tissue-dissolving toxin. The secreted venom not only damages local tissue of the bite, but also causes local tissue swelling, degeneration, necrosis, ulcer formation... https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8390344/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8390344/

harshreality 4y ago
A lot of bites have some localized tissue damage, whether caused by toxins produced by the venomous animal's genome or resident bacteria in their venom glands (aside from bacteria getting into the wound separately, causing some amount of necrosis). Concentration matters, and I haven't seen anything indicating that necrosis is a real problem in black widow bites like it can can be from recluse venom (allegedly) or flesh-eating bacteria. Also, the claim in that (Chinese) paper of necrotic venom isn't well sourced.