ethylene oxide/некроз

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Effects of Electrospun Fibrous Membranes of PolyCaprolactone and Chitosan/Poly(Ethylene Oxide) on Mouse Acute Skin Lesions

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Polycaprolactone (PCL) is a synthetic polymer with good mechanical properties that are useful to produce biomaterials of clinical application. It can be successfully combined with chitosan, which enhances the biomaterial properties through the modulation of molecular and cellular mechanisms. The

Pulmonary fibrosis produced in F-344 rats by subchronic inhalation of aerosols of a 4000 molecular weight ethylene oxide/propylene oxide polymer.

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Inhalation of aerosols of the ethylene oxide/propylene oxide polymer (U-5100) evaluated in this study has previously been shown in acute and 2-week studies to produce toxicologic effects on the lungs, with increased lung weights and microscopic findings of congestion and hemorrhage of pulmonary

Acute and 2-week inhalation toxicity studies on aerosols of selected ethylene oxide/propylene oxide polymers in rats.

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The ethylene oxide/propylene oxide (EO/PO) polymers evaluated in this study have previously been shown to have a low order of toxicity and/or irritancy by ocular, dermal, or oral routes of administration. These studies evaluated the acute inhalation toxicity of respirable aerosols of three EO/PO

Ethylene oxide burns from improperly sterilized mammary implants.

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Sixteen patients are presented who suffered from substantial tissue burn subsequent to the insertion of textured silicone gel breast implants for cosmetic purposes. The injuries may have been caused by ethylene oxide (ETO) residues in the implants used for the surgical procedure. The manufacturer

[Ototoxic study spiral ganglion neurons in the pig guinea with ethylene oxide remained in absorbable gelatin sponge].

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OBJECTIVE To measure ethylene oxide remained in absorbable gelatin sponge, and to observe change of ultrastructure in spiral ganglion neurons after deposited in otic vesicle of pig guinea with ethylene oxide sterilized absorbable gelatin sponge. METHODS To use comparative colour technique measuring

Effects of three epoxides--ethylene oxide, propylene oxide and epichlorohydrin--on cell cycle progression and cell death in human diploid fibroblasts.

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Ethylene oxide (EtO), propylene oxide (PO), and epichlorohydrin (ECH) strongly influenced the G1/S progression in human diploid fibroblasts, VH-10. However, these epoxides did not affect substantially the G2/M progression. It was found that G1 arrest is induced by these epoxides 6-18 h after the

Effects of ethylene oxide and steam sterilization on dialysis-induced cytokine release by cuprophan membrane.

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The effects of sterilization modalities on dialysis-induced cytokine release are still unknown. To investigate these effects, 8 patients on chronic hemodialysis were enrolled for evaluating at different intervals interleukin-1beta (IL-1beta) and tumor necrosis factor-alpha (TNF-alpha) production

An evaluation of the capacity of differently prepared demineralised bone matrices (DBM) and toxic residuals of ethylene oxide (EtOx) to provoke an inflammatory response in vitro.

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Demineralised bone matrix (DBM) is a form of allogeneic tissue graft widely used in oral and maxillofacial procedures. There is a long history of controversy relating to the suitability of ethylene oxide gas (EtOx) as a terminal sterilisation agent for this graft, relating to its effects on the

Membrane sealing by polymers.

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An intact cell membrane serves as a barrier, controlling the traffic of materials going into and out of the cell. When the integrity of the membrane is compromised, its transport barrier function is also disrupted, leaving the cell vulnerable to necrosis. It has been shown that triblock copolymer

Composite autogeneic human cranioplasty: frozen skull supplemented with fresh iliac corticocancellous bone.

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Skull totally exteriorized during craniotomy becomes nonviable. Resorption of the reimplanted cranial section occurs variably according to its treatment, the properties of the recipient bed, and the metabolic conditions of the host. Neurosurgeons commonly deep freeze autogeneic skull for

Biphasic Double-Network Hydrogel With Compartmentalized Loading of Bioactive Glass for Osteochondral Defect Repair

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Periarticular injury usually causes the defects of superficial cartilage and the underlying subchondral bone. Although some efficacious outcomes have been achieved by the existing therapeutic methods both in clinics and research, like symptomatic treatment, microfracture surgery, and tissue

Evaluation of polyphosphates and polyphosphonates as degradable biomaterials.

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A series of polymers, bisphenol A-based poly(phosphoesters), were evaluated as degradable biomaterials. Degradation was observed for the four polymers studied under both in vitro and in vivo conditions. The rate of degradation was affected by polymer side-chain structure and correlated with the

Magnetic Temperature-Sensitive Solid-Lipid Particles for Targeting and Killing Tumor Cells.

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Magnetic and temperature-sensitive solid lipid particles (mag. SLPs) were prepared in the presence of oleic acid-coated iron oxide (IO-OA) nanoparticles with 1-tetradecanol and poly(ethylene oxide)-block-poly(ε-caprolactone) as lipid and stabilizing surfactant-like agents, respectively. The

Anti-Inflammatory, Immunomodulatory, and Tissue Repair Activity on Human Keratinocytes by Green Innovative Nanocomposites.

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The use of raw materials obtained by waste and processed through innovative industrial methodologies has generated an industry of about a trillion dollars in a short time, and in the near future will provide resources and services for the conservation and sustainable use of natural resources in

Final report on the safety assessment of Triethylene Glycol and PEG-4.

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Triethylene Glycol and PEG-4 (polyethylene glycol) are polymers of ethylene oxide alcohol. Triethylene Glycol is a specific three-unit chain, whereas PEG-4 is a polymer with an average of four units, but may contain polymers ranging from two to eight ethylene oxide units. In the same manner, other

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