RGD Reference Report - Adenosine A2A activation attenuates nontransplantation lung reperfusion injury. - Rat Genome Database

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Adenosine A2A activation attenuates nontransplantation lung reperfusion injury.

Authors: Ellman, PI  Reece, TB  Law, MG  Gazoni, LM  Singh, R  Laubach, VE  Linden, J  Tribble, CG  Kron, IL 
Citation: Ellman PI, etal., J Surg Res. 2008 Sep;149(1):3-8. Epub 2007 Sep 12.
RGD ID: 4890367
Pubmed: PMID:17937935   (View Abstract at PubMed)
DOI: DOI:10.1016/j.jss.2007.08.008   (Journal Full-text)

BACKGROUND: Lung reperfusion injury is a significant problem in cardiothoracic surgery. Previous studies have demonstrated that an adenosine A(2A) agonist can attenuate lung reperfusion injury in a lung transplantation model. There has been little work, however, examining its effects in the setting of nontransplant ischemia reperfusion. Our hypothesis was that an A(2A) agonist would attenuate lung reperfusion injury in a warm ischemia hilar clamping model. STUDY DESIGN: Sprague Dawley rats underwent 90 min of left hilar clamping followed by 4 h of reperfusion. Group 1 (n = 13) received an intravenous infusion of 0.06 ug/kg/min of ATL-146e, which was started 10 min before reperfusion. Group 2 (n = 16) received an equivalent saline infusion. A third sham group (n = 14) received the same protocol as Group 2 but no lung ischemia. RESULTS: Animals receiving ATL-146e showed significant improvements in oxygenation (Group 1: 447 +/- 26.02 mmHg versus Group 2: 223 +/- 24.46 mmHg (P < 0.001) as well as ventilation (pCO2 Group 1: 48.78 +/- 3.88 versus Group 2: 63.56 +/- 4.80 (P = 0.009)). Total protein in the bronchoalveolar lavage was significantly higher in the saline group compared with the adenosine as well as a higher proportion of neutrophils. Histological analysis demonstrated a significantly higher number of neutrophils in the IR group compared with the adenosine group. CONCLUSIONS: ATL-146e, an adenosine analogue that is a specific agonist for the A(2A) receptor, attenuates reperfusion injury in an in vivo rat lung model. Arterial blood gas measurements demonstrate a statistically significant increase in oxygenation and improved ventilation.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Reperfusion Injury  ISOAdora2a (Rattus norvegicus)4890367; 4890367 RGD 
Reperfusion Injury  IDA 4890367 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Adora2a  (adenosine A2a receptor)

Genes (Mus musculus)
Adora2a  (adenosine A2a receptor)

Genes (Homo sapiens)
ADORA2A  (adenosine A2a receptor)


Additional Information