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protoporphyrin/edema
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Zinc protoporphyrin IX attenuates closed head injury-induced edema formation, blood-brain barrier disruption, and serotonin levels in the rat.
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The role of heme oxygenase (HO) in closed head injury (CHI) was examined using a potent HO and guanylyl cyclase inhibitor, zinc protoporphyrin (Zn-PP) in the rat. Blood-brain barrier (BBB) permeability to Evans blue and radioiodine, edema formation, and plasma and brain levels of serotonin were
Preischemic but not postischemic zinc protoporphyrin treatment reduces infarct size and edema accumulation after temporary focal cerebral ischemia in rats.
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OBJECTIVE
Zinc protoporphyrin (ZnPP) has multiple actions. It is an interleukin-1 antagonist as well as a hemeoxygenase inhibitor. Interleukin-1 is produced in ischemic brain and probably contributes to ischemic injury, although the role of heme oxygenase during ischemia is unknown. Whether ZnPP
Effects of heme oxygenase 1 on brain edema and neurologic outcome after cardiopulmonary resuscitation in rats.
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BACKGROUND
Heme oxygenase 1 (HO-1) has been shown to attenuate neuronal injury. Therefore, the authors examined whether HO-1 would reduce the brain damage caused by cardiac arrest.
METHODS
Rats anesthetized with halothane were subjected to 8 min of cardiac arrest by asphyxia without any pretreatment
Systemic zinc protoporphyrin administration reduces intracerebral hemorrhage-induced brain injury.
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Hemoglobin degradation products result in brain injury after intracerebral hemorrhage (ICH). Recent studies found that intracerebral infusion of heme oxygenase inhibitors reduces hemoglobin- and ICH-induced brain edema in rats and pigs. The present study examined whether systemic use of zinc
Inflammation and Edema in the Lung and Kidney of Hemorrhagic Shock Rats Are Alleviated by Biliary Tract External Drainage via the Heme Oxygenase-1 Pathway.
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The lung and kidney are two organs that are easily affected by hemorrhagic shock (HS). We investigated roles of biliary tract external drainage (BTED) in inflammation and edema of the lung and kidney in HS and its relationship with the heme oxygenase-1 (HO-1) pathway. Rat models of HS were induced
Non-invasive Assessment of Mitochondrial Oxygen Metabolism in the Critically Ill Patient Using the Protoporphyrin IX-Triplet State Lifetime Technique-A Feasibility Study
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The imbalance of oxygen delivery and oxygen consumption resulting in insufficient tissue oxygenation is pathognomonic for all forms of shock. Mitochondrial function plays an important role in the cellular oxygen metabolism and has been shown to impact a variety of diseases in the intensive care
The influence of UV exposure on 5-aminolevulinic acid-induced protoporphyrin IX production in skin.
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The skin of nude mice was exposed to erythemogenic doses of UV radiation, which resulted in erythema with edema. An ointment containing 5-aminolevulinic acid (ALA) was topically applied on mouse and human skin. Differences in the kinetics of protoporphyrin accumulation were investigated in normal
Microscopic localisation of protoporphyrin IX in normal mouse skin after topical application of 5-aminolevulinic acid or methyl 5-aminolevulinate.
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Light fractionation does not enhance the response to photodynamic therapy (PDT) after topical methyl-aminolevulinate (MAL) application, whereas it is after topical 5-aminolevulinic acid (ALA). The differences in biophysical and biochemical characteristics between MAL and ALA may result in
The optimization of fluorescence imaging of brain tumor tissue differentiated from brain edema--in vivo kinetic study of 5-aminolevulinic acid and talaporfin sodium.
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We aimed to clarify the optimal timing for the fluorescence imaging of brain tumor tissue differentiated from brain edema after the administration of photosensitizers.
We have performed an in vivo study of the kinetics of 5-aminolevulinic acid (5-ALA) in comparison with talaporfin sodium using the
Differential effects of protoporphyrin and uroporphyrin on murine mast cells.
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To investigate the mechanisms responsible for the distinct cutaneous manifestations of erythropoietic protoporphyria and porphyria cutanea tarda, the effects of protoporphyrin (PP) and uroporphyrin (URO), the predominant porphyrins in the respective disease, on mast cells were examined. Release of
Phototoxic damage to sebaceous glands and hair follicles of mice after systemic administration of 5-aminolevulinic acid correlates with localized protoporphyrin IX fluorescence.
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The skin of albino mice given 5-aminolevulinic acid (ALA) by intraperitoneal injection rapidly developed the characteristic red fluorescence of protoporphyrin IX. Fluorescence microscopy of frozen tissue sections revealed intense red fluorescence within the sebaceous glands and a much weaker
Zinc protoporphyrin, zinc ion, and protoporphyrin reduce focal cerebral ischemia.
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OBJECTIVE
Zinc protoporphyrin pretreatment protects against temporary focal ischemic brain injury in rats. However, it is not known whether the zinc or the protoporphyrin portion of zinc protoporphyrin has effects on focal cerebral ischemia. Hence, all three agents were compared with regard to
Possible involvement of interleukin-1 in ischemic brain edema formation.
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To determine the contribution of interleukin 1 (IL-1) on ischemic brain edema formation, the effect of recombinant human interleukin 1 beta (rhIL-1 beta), or zinc protoporphyrin (ZnPP) as an IL-1 blocker, on brain edema was studied in rats. The animals were subjected to 60 min of ischemia in a
Anti-inflammatory properties of zinc protoporphyrin disodium (Zn-PP-2Na).
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Anti-inflammatory properties of zinc protoporphyrin disodium (Zn-PP-2Na) were studied. Zn-PP-2Na exhibits anti-allergic action against type III and IV reactions (passive Arthus reaction in rats and tuberculin-induced footpad reaction in mice), but does not affect type I and II reactions (homologous
Brain edema after experimental intracerebral hemorrhage: role of hemoglobin degradation products.
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OBJECTIVE
The mechanisms involved in brain edema formation following intracerebral hemorrhage (ICH) have not been fully elucidated. The authors have found that red blood cell lysis plays an important role in edema development after ICH. In the present study, they sought to determine whether
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