papillon-lefevre disease/hypoxia

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PL-W18O49-TPZ Nanoparticles for Simultaneous Hypoxia-Activated Chemotherapy and Photothermal Therapy.

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The combination of W18O49 and tirapazamine (TPZ) core has been first introduced into the preparation of poly(ε-caprolactone)-poly(ethylene glycol) (PL) surrounded nanoparticles (NPs). The aim of using W18O49 is employing its capability of reacting with the absorbed O2 to generate reactive oxygen

Roles and regulation of ketogenesis in cultured astroglia and neurons under hypoxia and hypoglycemia.

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Exogenous ketone bodies (KBs), acetoacetate (AA), and β-hydroxybutyrate (BHB) act as alternative energy substrates in neural cells under starvation. The present study examined the endogenous ketogenic capacity of astroglia under hypoxia with/without glucose and the possible roles of KBs in neuronal

Identifying hypoxia in a newborn piglet model using urinary NMR metabolomic profiling.

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Establishing the severity of hypoxic insult during the delivery of a neonate is key step in the determining the type of therapy administered. While successful therapy is present, current methods for assessing hypoxic injuries in the neonate are limited. Urine Nuclear Magnetic Resonance (NMR)

Effects of acute systematic hypoxia on human urinary metabolites using LC-MS-based metabolomics.

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OBJECTIVE The metabolic variability and response to acute systematic hypoxia have been characterized by the high resolution of liquid chromatography/time-of-flight/mass spectrometry (LC-TOF/MS) in this study. Specifically, we compared the urinary metabolic profiles of six healthy sedentary men under

Physiological aspects of the mitochondrial cyclosporin A-insensitive palmitate/Ca2+-induced pore: tissue specificity, age profile and dependence on the animal's adaptation to hypoxia.

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Earlier we found that being added to rat liver mitochondria, palmitic acid (Pal) plus Ca(2+) opened a cyclosporin A-insensitive pore, which remained open for a short time. Apparently, this pore is involved in the Pal-induced apoptosis and may also take part in the mitochondrial Ca(2+) recycling as a

Successful treatment of noise-induced cochlear ischemia, hypoxia, and hearing loss.

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Cochlear blood flow (CoBF), perilymphatic partial pressure of oxygen (PL-pO2), cochlear microphonics (CMs), compound action potentials of the auditory nerve (CAPs), and auditory brainstem responses (ABRs) were studied in noise-exposed guinea pigs during and after the following treatments:

Delayed Fluorescence, Room Temperature Phosphorescence, and Mechanofluorochromic Naphthalimides: Differential Imaging of Normoxia and Hypoxia Live Cancer Cells

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We study the effect of molecular conformation on the electronic coupling between the donor amines and acceptor 1,8-naphthalimide (NPI) in a series of D-A systems 1-4 (A = NPI; D = phenothiazine, phenoxazine, carbazole, diphenylamine, respectively, for 1, 2, 3, and

Ventilatory response to hypoxia during endotoxemia in young rats: role of nitric oxide.

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Administration of Escherichia coli endotoxin attenuates the ventilatory response to hypoxia (VRH) in newborn piglets, but the mechanisms responsible for this depression are not clearly understood. Nitric oxide (NO) production increases during sepsis and elevated NO levels can inhibit carotid body

Effects of chronic hypoxia on capillary flow and hematocrit in rat skeletal muscle.

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The cremasteric microcirculation was studied in rats exposed to chronic hypoxia. Control male weanling Sprague-Dawley rats (n = 8) were raised for 42-49 days at 752 mmHg. Hypoxic rats (n = 9) were reared for 3 days at 551 mmHg, 4 days at 461 mmHg, 3 days at 371 mmHg, and 31-38 days at 311 mmHg

Discriminating pulmonary hypertension caused by monocrotaline toxicity from chronic hypoxia by near-infrared spectroscopy and multivariate methods of analysis.

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A new method has been developed for the determination of tissue pathology caused by chronic hypoxia and monocrotaline toxicity. The method is based on the use of near-infrared (NIR) spectrophotometry to measure spectra of lung tissue from normal chronic hypoxia (CH) and monocrotaline (MCT) models of

Effect of Acute Dietary Nitrate Consumption on Oxygen Consumption During Submaximal Exercise in Hypobaric Hypoxia.

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Reduced partial pressure of oxygen impairs exercise performance at altitude. Acute nitrate supplementation, at sea level, may reduce oxygen cost during submaximal exercise in hypobaric hypoxia. Therefore, we investigated the metabolic response during exercise at altitude following acute nitrate

Acute dietary nitrate supplementation does not attenuate oxidative stress or the hemodynamic response during submaximal exercise in hypobaric hypoxia.

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The purpose of this study was to investigate changes in oxidative stress, arterial oxygen saturation (SaO2), blood pressure (BP), and heart rate (HR) during exercise in hypobaric hypoxia following acute dietary nitrate supplementation. Nine well-trained (maximal oxygen consumption, 60.8 ± 7.8

Intermittent hypoxia activates peptidylglycine alpha-amidating monooxygenase in rat brain stem via reactive oxygen species-mediated proteolytic processing.

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Intermittent hypoxia (IH) associated with sleep apneas leads to cardiorespiratory abnormalities that may involve altered neuropeptide signaling. The effects of IH on neuropeptide synthesis have not been investigated. Peptidylglycine alpha-amidating monooxygenase (PAM; EC 1.14.17.3) catalyzes the

Effects of antioxidant supplementation on exercise performance in acute normobaric hypoxia.

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OBJECTIVE To compare the effects of a 3-week supplementation between two different mixtures of antioxidants and placebo on aerobic exercise performance in acute normobaric hypoxia. METHODS Seventeen subjects were randomly assigned in a double-blind fashion to receive a broad-based antioxidants

A case of interstitial pneumonia associated with anti-PL-7 antibody in a patient with rheumatoid arthritis.

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A 65-year-old female had been treated rheumatoid arthritis (RA), interstitial pneumonia (IP) and nephrotic syndrome with prednisolone and cyclosporine. She was emergently admitted to our hospital due to the worsening exertional dyspnea and severe hypoxemia. Chest computed tomography (CT) showed new

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