title: BNP shows myocardial injury earlier than Troponin-I in experimental carbon monoxide poisoning.
abstract: OBJECTIVE
  In this study, our purpose was to determine whether plasma BNP level can be useful or not in determining the severity of myocardial injury formed by CO poisoning and to compare plasma BNP level with serum cTnI level.
  
  
  METHODS
  In the study, 46 female Wistar Albino rats were used. Rats were divided into four groups, one control group and three poisoning groups. The mixture of pure CO and air was injected for 60 minutes to provide 3000 ppm CO concentration. Blood samples of groups were collected to measure COHb, BNP and cTnI levels. Blood samples of poisoning groups were collected at the 1st, 6th and 12th hours after poisoning. After biochemical procedures, findings were analysed statistically and compared with each other.
  
  
  RESULTS
  Eight rats which died in poisoning groups were excluded and 38 rats were evaluated. BNP levels were high in all poisoning groups compared to control group and the difference between them was statistically significant (p < 0.05). cTnI levels were high in 6th and 12th hours poisoning groups compared to control and 1st hour group but only 12th hour group had statistically significant difference (p < 0.05). A statistically positive relation was established between BNP and cTnI levels in 6th and 12th hour groups (R: 0.76 - p < 0.05 - n:38).
  
  
  CONCLUSIONS
  It was found that BNP levels increased earlier than cTnI levels in acute severe CO poisoning. BNP levels of the cases which were determined to have increased cTnI levels showing myocardial injury increased as well. BNP can show myocardial injury and its severity in acute CO poisoning.
authors.affiliation: Department of Emergency Medicine, Sakarya University, Faculty of Medicine, Sakarya, Turkey. drmrtycl@gmail.com.
authors.forename: M
authors.initials: M
authors.lastname: Yücel
authors.forename: L
authors.initials: L
authors.lastname: Avsarogullari
authors.forename: P
authors.initials: P
authors.lastname: Durukan
authors.forename: O
authors.initials: O
authors.lastname: Akdur
authors.forename: S
authors.initials: S
authors.lastname: Ozkan
authors.forename: E
authors.initials: E
authors.lastname: Sozuer
authors.forename: S
authors.initials: S
authors.lastname: Muhtaroglu
authors.forename: I
authors.initials: I
authors.lastname: Ikizceli
authors.forename: Y
authors.initials: Y
authors.lastname: Yürümez
mesh_terms: D000818:Animals; D002249:Carbon Monoxide Poisoning / Q000097:blood*; D002263:Carboxyhemoglobin / Q000032:analysis; D005260:Female; D020097:Natriuretic Peptide, Brain / Q000097:blood*; D051381:Rats; D017208:Rats, Wistar; D019210:Troponin I / Q000097:blood* / Q000378:metabolism
chemical_list: D019210:Troponin I; C095026:brain natriuretic peptide-35, rat; D020097:Natriuretic Peptide, Brain; D002263:Carboxyhemoglobin