Systemic response induced by Scorpaena plumieri fish venom initiates acute lung injury in mice.
Scorpaena plumieri venomous fish inflicted severe injuries in humans characterized by systemic effects and cardiovascular abnormalities. Although cardiotoxic and hypotensive effects induced in rats by this venom have been studied, little is known about their effect on bronchial epithelial permeability and airway inflammation in mice. The primary goal of this study was to determine whether the intraplantar or intraperitoneal injection of S. plumieri venom results in systemic response, and whether this event initiates acute lung injury. We found that BALB/c mice developed neutrophilic infiltrates, areas of lung hemorrhage and alveolar macrophage activation within 24h after injection with S. plumieri venom. These histopathological changes were associated with an early increase in BAL fluid protein and early induction of cytokines, chemokines and matrix metalloproteinases, followed by a later increase in BAL fluid neutrophils. These findings provide clear evidence that the injection of S. plumieri venom in footpad or peritoneal cavity of mice results in venom deposition in the airway and initiates a sustained inflammatory response in the lungs.
Boletini-Santos
Douglas
D
Special Laboratory of Applied Toxinology (CAT/CEPID), Butantan Institute, Avenue Vital Brazil, 1500, Butantan, 05503-009 Sao Paulo, Brazil.
Komegae
Evilin Naname
EN
Figueiredo
Suely G
SG
Haddad
Vidal
V
Lopes-Ferreira
Mônica
M
Lima
Carla
C
D000208:Acute Disease; D000818:Animals; D017209:Apoptosis; D001992:Bronchoalveolar Lavage Fluid / Q000737:chemistry; D004790:Enzyme Induction; D005397:Fish Venoms / Q000737:chemistry / Q000633:toxicity*; D005399:Fishes / Q000502:physiology*; D008168:Lung / Q000201:enzymology; D008171:Lung Diseases / Q000139:chemically induced*; D016676:Macrophages, Alveolar / Q000187:drug effects / Q000378:metabolism; D008297:Male; D045726:Metalloproteases / Q000378:metabolism; D051379:Mice; D008807:Mice, Inbred BALB C
D005397:Fish Venoms; D045726:Metalloproteases