title: Anti-neutrophil antibody attenuates the severity of acute lung injury in rats with experimental acute pancreatitis.
abstract: OBJECTIVE
  To examine the role of activated neutrophils in microvascular injury after severe acute pancreatitis. We used the polyclonal anti-rat neutrophil antibody (PoAb) to deplete peripheral neutrophil counts and the anti-rat monoclonal antibody (MoAb) CD18 to block neutrophil adherence functions.
  
  
  METHODS
  Prospective, controlled trial.
  
  
  METHODS
  Laboratory.
  
  
  METHODS
  Anesthetized male Wistar breeder rats, in which necrotizing pancreatitis was induced by injecting necrotizing agents into the pancreatic duct.
  
  
  METHODS
  Treatment groups received an infusion of PoAb, 8 mL/kg, before induction of pancreatitis or MoAb CD18, 2 mg/kg, after induction of pancreatitis. Control animals received 2 mL of rabbit serum or 1 mL of saline solution.
  
  
  METHODS
  Survival rate, white blood cell count, levels of serum amylase and lipase, myeloperoxidase activity in the lung, lipid peroxide levels in the pancreas, and results of histological studies.
  
  
  RESULTS
  The survival rate of rats treated either with PoAb before or MoAb CD18 after induction of sepsis improved significantly (P < .01). Histologically and according to the levels of neutrophil myeloperoxidase in their lungs, rats treated with the antibodies 24 hours after inducing pancreatitis improved significantly (P < .05). Moreover, the serum lipase concentrations and lipid peroxide levels in the pancreas of these rats decreased significantly (P < .05).
  
  
  CONCLUSIONS
  Both the depletion of peripheral neutrophils by PoAb and blocking of neutrophil adherence functions by MoAb CD18 may help to prevent acute lung injury caused by severe acute pancreatitis in this model.
authors: Department of Surgery II, Nagoya University School of Medicine, Japan.
authors: S
authors: S
authors: Inoue
authors: A
authors: A
authors: Nakao
authors: W
authors: W
authors: Kishimoto
authors: H
authors: H
authors: Murakami
authors: K
authors: K
authors: Itoh
authors: T
authors: T
authors: Itoh
authors: A
authors: A
authors: Harada
authors: T
authors: T
authors: Nonami
authors: H
authors: H
authors: Takagi
mesh_terms: D000208:Acute Disease; D000818:Animals; D000906:Antibodies / Q000276:immunology; D002448:Cell Adhesion; D006801:Humans; D008171:Lung Diseases / Q000276:immunology*; D008297:Male; D009336:Necrosis; D009503:Neutropenia / Q000276:immunology; D009504:Neutrophils / Q000276:immunology*; D010195:Pancreatitis / Q000201:enzymology / Q000276:immunology* / Q000473:pathology; D011446:Prospective Studies; D051381:Rats; D017208:Rats, Wistar
chemical_list: D000906:Antibodies