نتایج جستجو برای: contrastagent hyperthermia
تعداد نتایج: 9222 فیلتر نتایج به سال:
A 22-year-old man with schizophrenia presented with cervical spine damage caused by a crush injury. Upon admission, we performed anterior cervical decompression and fusion of vertebrae C5, C6, and C7. The patient experienced treatment-resistant hyperthermia with a body temperature >40°C. He did not show any evidence of drug use that might induce malignant hyperthermia. He also did not exhibit s...
BACKGROUND We report two cases of brain stem hemorrhage characterized by severe hyperthermia, rhabdomyolysis, acute renal failure, and a rapidly fatal course. METHODS A 55-year-old man and a 65-year-old man were admitted with coma-producing brain stem hemorrhage accompanied by hyperthermia. Both underwent ventricular drainage. RESULTS Within 1 day of onset, both patients developed hyperther...
Malignant hyperthermia is a potentially lethal inherited disorder characterized by disturbance of calcium homeostasis in skeletal muscle. Volatile anesthetics and/or the depolarizing muscle relaxant succinylcholine may induce this hypermetabolic muscular syndrome due to uncontrolled sarcoplasmic calcium release via functionally altered calcium release receptors, resulting in hypoxemia, hypercap...
Objective: Magnetic fluid hyperthermia is a technique in which thermal energy is generated by magnetic nanoparticles (MNPs) that are excited by an alternating magnetic field (AC field). During hyperthermia, in-vivo monitoring of elevation of temperature relies on invasive insertion of conventional thermometers, or employment of thermo-sensitive cameras that lack high precision....
Magnetic fluid hyperthermia as a cancer treatment method is an attractive alternative to other forms of hyperthermia. It is based on the heat released by magnetic nanoparticles subjected to an alternating magnetic field. Recent studies have shown that magnetic fluid hyperthermia-treated cells respond significantly better to chemotherapeutic treatment compared with cells treated with hot water h...
There is a clear rationale for using hyperthermia in cancer treatment. Treatment at temperatures between 40 and 44 degrees C is cytotoxic for cells in an environment with a low pO(2) and low pH, conditions that are found specifically within tumour tissue, due to insufficient blood perfusion. Under such conditions radiotherapy is less effective, and systemically applied cytotoxic agents will rea...
Hyperthermia, as an anticancer therapeutic strategy, presents notable advantages in conjunction with irradiation and/or chemotherapy in the treatment of cancer by promoting apoptosis and inhibiting proliferation. A number of studies have documented that hyperthermia inhibits cancer progression through transcriptional activation of p53, which promotes cell cycle arrest and apoptosis. However, th...
OBJECTIVE To explore the effect on radiosensitivity of arsenic trioxide (As₂0₃) in conjunction with hyperthermia on the esophageal carcinoma EC-1 cell line. METHOD Inhibition of EC-1 cell proliferation at different concentrations of As₂0₃ was assessed using the methyl thiazolyl blue colorimetric method (MTT method), with calculation of IC₅₀ value and choice of 20% of the IC₅₀ as the experimen...
BACKGROUND Serotonin is believed as an important factor in brain function. The role of serotonin in cerebral psycho-patho-physiology has already been well established. However, the function of serotonin antagonist in anesthetized subjects under hyperthermia has not been studied properly. METHODS Experiments were performed in three groups of urethane-anesthetized rats, such as: (i) control gro...
in this work, mn ferrite nanopowders were prepared by co-precipitation method and were characterized. phase identification of the nanopowders was performed by x-ray diffraction method and the mean particle size of the nanopowders was calculated by scherrer's formula, using necessary corrections. magnetic parameters of the prepared nanopowders were measured by a vibrating sample magnetomete...
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