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| Content Provider | Springer Nature Link |
|---|---|
| Author | Gao, Xiao pei Rubinstein, Israel |
| Copyright Year | 2010 |
| Abstract | To determine whether exposure to E. coli lipopolysaccharide (LPS) modulates adenosine A1 receptor-induced increase in plasma exudation from the intact hamster cheek pouch microcirculation.Using intravital microscopy, we found that suffusion of R(−)-N 6-(2-phenylisopropyl)-adenosine (R(−)-PIA) (1.0 and 10.0 nM), a selective adenosine A1 receptor agonist, onto the intact cheek pouch elicited significant, concentration-dependent leaky site formation and increase in clearance of fluorescein thioisocyanate-dextran (mol mass, 70 kDa) from post-capillary venules (p < 0.05). These responses were significantly attenuated by pre-treatment of hamsters with LPS (p < 0.05). By contrast, LPS had no significant effects on CGS-21680-, a selective adenosine A2A receptor agonist, bradykinin- and substance P-induced increases in plasma exudation from the cheek pouch.These data indicate that LPS attenuates adenosine A1 receptor-induced increase in plasma exudation in vivo in a specific fashion. We suggest that this phenomenon represents an endogenous anti-inflammatory cue to avoid excessive inflammation during Gram-negative bacterial infections. |
| Starting Page | 195 |
| Ending Page | 201 |
| Page Count | 7 |
| File Format | |
| ISSN | 10233830 |
| Journal | Inflammation Research |
| Volume Number | 60 |
| Issue Number | 2 |
| e-ISSN | 1420908X |
| Language | English |
| Publisher | SP Birkhäuser Verlag Basel |
| Publisher Date | 2010-10-06 |
| Publisher Place | Basel |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Infection Inflammation Post-capillary venules Bradykinin Substance P Neurology Dermatology Allergology Rheumatology Pharmacology/Toxicology Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pharmacology Immunology |
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