carotenoid/hypoxia

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[The role of carotenoids in the development of compensatory reactions of the body to hypoxia].

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As a result of the examination of 76 patients with atherosclerosis (57 with ischemic stroke and 19 with chronic cerebrovascular insufficiency) the authors have established a definite correlation between the blood levels of carotinoids and the degree of hypoxia and cerebral ischemia, as well as

The carotenoid crocetin enhances pulmonary oxygenation.

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Rabbits anesthesized with urethan and subjected to mild hypoxia (60-70 Torr arterial PO2) through a reduction of the minute volume were injected with a carotenoid compound, crocetin, or saline. The increased PO2 in the arterial blood seen subsequently with crocetin is attributed to increased

Oxidant status, iron homeostasis, and carotenoid levels of COPD patients with advanced disease and LTOT.

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Background: The pathogenesis of chronic obstructive pulmonary disease (COPD) is associated with oxidative stress. Both iron (Fe) and oxygen are involved in the chemical reactions that lead to increased formation of reactive oxygen species. Oxidative reactions are prevented by antioxidants such as

Study the effect of crocin in three maternal hypoxia protocols with different oxygen intensities on motor activity and balance in rat offspring.

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Hypoxia as one of the most common clinical disturbances in pregnancy period can cause destructive changes in motor sensory cortex and can lead to imperfect organization in motor reactions. Crocin, a water-soluble carotenoid, is the most active ingredients of saffron and a lot of studies declare its

Breakdown of phytoplankton pigments in Baltic sediments: effects of anoxia and loss of deposit-feeding macrofauna.

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We examined the decay of chlorophyll a and the carotenoid fucoxanthin in oxic and anoxic sediment microcosms, with and without the deposit-feeding benthic amphipod Monoporeia affinis, over 57 days at 5 degrees C. Deep frozen phytoplankton from the Baltic Sea proper was added to all but a few

Intravenous crocetinate prolongs survival in a rat model of lethal hypoxemia.

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OBJECTIVE To examine whether a carotenoid, trans-sodium crocetinate, has beneficial effects on hemodynamic status and short-term outcome in a rat model of lethal hypoxemia. METHODS Randomized, placebo-controlled study. METHODS Medical school laboratory. METHODS Eighteen spontaneously breathing,

Dietary wolfberry upregulates carotenoid metabolic genes and enhances mitochondrial biogenesis in the retina of db/db diabetic mice.

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METHODS Our aim was to investigate whether dietary wolfberry altered carotenoid metabolic gene expression and enhanced mitochondrial biogenesis in the retina of diabetic mice. RESULTS Six-week-old male db/db and wild-type mice were fed the control or wolfberry diets for 8 weeks. At study

Lutein protects RGC-5 cells against hypoxia and oxidative stress.

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Retinal ischemia and oxidative stress lead to neuronal death in many ocular pathologies. Recently, we found that lutein, an oxy-carotenoid, protected the inner retina from ischemia/reperfusion injury. However, it is uncertain whether lutein directly protects retinal ganglion cells (RGCs). Here, an

Effects of the Macular Carotenoid Lutein in Human Retinal Pigment Epithelial Cells.

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Retinal pigment epithelial (RPE) cells are central to retinal health and homoeostasis. Oxidative stress-induced damage to the RPE occurs as part of the pathogenesis of age-related macular degeneration and neovascular retinopathies (e.g., retinopathy of prematurity, diabetic retinopathy). The

Lycopene protects against hypoxia/reoxygenation-induced apoptosis by preventing mitochondrial dysfunction in primary neonatal mouse cardiomyocytes.

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BACKGROUND Hypoxia/reoxygenation(H/R)-induced apoptosis of cardiomyocytes plays an important role in myocardial injury. Lycopene is a potent antioxidant carotenoid that has been shown to have protective properties on cardiovascular system. The aim of the present study is to investigate the potential

No effect of trans sodium crocetinate on maximal O(2) conductance or V(O(2),max) in moderate hypoxia.

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The lumped parameter describing skeletal muscle diffusional conductance for O(2), DM(O(2)), reflects all of the resistances for O(2) in moving from red cell to muscle fiber mitochondria. The purpose of our study was to determine if the carotenoid compound, trans sodium crocetinate (TSC), which has

[Distribution Characteristics of Sedimentary Pigments in the Changjiang Estuary and Zhe-Min Coast and its Implications].

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Compositions and contents of sedimentary pigments were examined using high performance liquid chromatography in order to discuss the spatial distributions of phytoplankton primary production, phytoplankton functional type and the preservation efficiency of phytoplankton pigments and their

217 000-year-old DNA sequences of green sulfur bacteria in Mediterranean sapropels and their implications for the reconstruction of the paleoenvironment.

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Deep-sea sediments of the eastern Mediterranean harbour a series of dark, organic carbon-rich layers, so-called sapropels. Within these layers, the carotenoid isorenieratene was detected. Since it is specific for the obligately anaerobic phototrophic green sulfur bacteria, the presence of

Ecosystem history of Mississippi River-influenced continental shelf revealed through preserved phytoplankton pigments.

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Pigments determined by high performance liquid chromatography (HPLC) provide useful information concerning water column and epibenthic plant and microbial communities in both extant communities and accumulated sediments in lakes, estuaries and the ocean. Chlorophyll and its degradation products

Analysis of fast chlorophyll fluorescence rise (O-K-J-I-P) curves in green fruits indicates electron flow limitations at the donor side of PSII and the acceptor sides of both photosystems.

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Limited evidence up to now indicates low linear photosynthetic electron flow and CO(2) assimilation rates in non-foliar chloroplasts. In this investigation, we used chlorophyll fluorescence techniques to locate possible limiting steps in photosystem function in exposed, non-stressed green fruits

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