| Clamping renal artery alone produces less ischemic damage compared to clamping renal artery and vein together in two animal models: near-infrared tissue oximetry and quantitation of 8-isoprostane levels. | |
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MedLine Citation:
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PMID: 23054317 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE: To investigate renal ischemia injury during renal hilar clamping (artery alone versus clamping artery/vein together) by evaluating ischemic damage via two different modalities in animal models-near-infrared tissue oximetry and 8-isoprostane levels. METHODS: Near-infrared renal oximetry measurements of Yorkshire swines (n = 4; 8 renal units) subject to hilar clamping were obtained at baseline, during warm ischemia (15- and 30-min trials) and after unclamping. Quantitation of 8-isoprostane levels is the second technique of quantitating interstitial fluid collected from a dialysis catheter placed through renal parenchyma of male Sprague-Dawley rats (n = 50) subject to hilar clamping during preclamp, clamp (either 15 or 30 min of hilum clamping), and post-clamp. RESULTS: N ear-infrared tissue oximetry. In the 15-min trial, oxygen saturation decreased 6× faster with artery alone compared to artery/vein clamped together. In the 30-min trial, the decrease was 5× faster. Recovery of oxygen saturation with only artery clamped occurred more than 2× faster in the 15- and 30-min periods. Isoprostane. For 15-min clamp times, 8-isoprostane levels in the artery alone group demonstrated a 1.54 decrease in the artery clamped alone group (p = 0.006) versus artery/vein together: preclamp (11.47 and 11.63 pg/mL/g), clamp (14.61 and 17.70 pg/mL/g), and post-clamp (14.26 and 22.04 pg/mL/g). CONCLUSIONS: Renal ischemia injury from clamping the renal artery alone was significantly less than clamping artery/vein together demonstrated in two different techniques. Recovery of oxygen saturation was twofold faster, and mean post-clamp 8-isoprostane levels demonstrated a 1.54-fold decrease with clamping renal artery alone compared to clamping artery/vein together. |
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Authors:
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J L Colli; Z Wang; N Johnsen; L Grossman; B R Lee |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-9-30 |
Journal Detail:
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Title: International urology and nephrology Volume: - ISSN: 1573-2584 ISO Abbreviation: Int Urol Nephrol Publication Date: 2012 Sep |
Date Detail:
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Created Date: 2012-10-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0262521 Medline TA: Int Urol Nephrol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Urology, Tulane University School of Medicine, 1430 Tulane Avenue, SL-42, Room 3522, New Orleans, LA, 70112, USA, jcolli1@tulane.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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