Effects of hyperbaric oxygen exposure on experimental hepatic ischemia reperfusion injury: Relationship between its timing and neutrophil sequestration
| العنوان: | Effects of hyperbaric oxygen exposure on experimental hepatic ischemia reperfusion injury: Relationship between its timing and neutrophil sequestration |
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| المؤلفون: | Shinichi Ueno, Kenji Kihara, Takashi Aikou, Masahiko Sakoda |
| المصدر: | Liver Transplantation. 11:1574-1580 |
| بيانات النشر: | Ovid Technologies (Wolters Kluwer Health), 2005. |
| سنة النشر: | 2005 |
| مصطلحات موضوعية: | Male, Time Factors, Neutrophils, medicine.medical_treatment, Liver transplantation, Neutrophil Activation, chemistry.chemical_compound, Hyperbaric oxygen, medicine, Animals, Rats, Wistar, Survival rate, Hyperbaric Oxygenation, Transplantation, Hepatology, business.industry, Naphthol AS, Malondialdehyde, medicine.disease, Rats, Hepatic ischemia, Disease Models, Animal, Microscopy, Electron, Treatment Outcome, Liver, chemistry, Reperfusion Injury, Anesthesia, Surgery, Hepatic dysfunction, business, Reperfusion injury, Follow-Up Studies |
| الوصف: | Recent studies have shown that hyperbaric oxygen therapy (HBOT) reduces neutrophil endothelial adherence in venules and also blocks the progressive arteriolar vasoconstriction associated with ischemia-reperfusion (I-R) injury in the extremities and the brain. In order to elucidate the effects of HBOT after I-R in digestive organs, particularly in the liver, we evaluated the following: 1) the relationship between timing of HBOT and tissue damage; and 2) HBOT's effects on neutrophil sequestration. Using a hepatic I-R (45 minute) model in male rats, survival rate, liver tissue damage, and neutrophil accumulation within the sinusoids in the HBOT-treated group (Group H) were compared to those in the nontreated group (Group C). For the HBOT-treated group, HBOT was administered as 100% oxygen, at 2.5 atm absolute, for 60 minutes. When HBOT was given 30 minute after I-R, the survival rate was much better in Group H than in Group C. HBOT performed within 3 hours of I-R markedly suppressed increases in the malondialdehyde level in tissues of the liver and lessened the congestion in the sinusoids. In addition, HBOT just after I-R caused decreased number of cells stained by the naphthol AS-D chloroacetate esterase infiltrating into the sinusoids. HBOT 3 hours after reperfusion, however, showed no clear effects upon neutrophil sequestration compared to Group C. These results indicate that HBOT performed within 3 hours of I-R alleviates hepatic dysfunction and improves the survival rate after I-R. Herein, we propose 1 possible mechanism for these beneficial effects: early HBOT given before neutrophil-mediated injury phase may suppress the accumulation of neutrophils after I-R. In conclusion, we believe that the present study should lead to an improved understanding of HBOT's potential role in hepatic surgery. |
| تدمد: | 1527-6473 1527-6465 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3f70cf1190d7eca17be905de2c8ff11 https://doi.org/10.1002/lt.20533 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....f3f70cf1190d7eca17be905de2c8ff11 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15276473 15276465 |
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