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Stran 1 iz 30 rezultatov
Associations between fruits, vegetables, vitamin A, β-carotene and flavonol dietary intake, and age-related macular degeneration in elderly women in Korea: the Fifth Korea National Health and Nutrition Examination Survey.
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Age-related macular degeneration (AMD) is one of the principal causes of blindness. This study investigated the association between diet and the prevalence of AMD in elderly Korean women.
Study subjects were women aged ⩾65 years (n=1008) from the Korea National Health and Nutrition Examination
cDNA cloning and characterization of a 3'/5'-O-methyltransferase for partially methylated flavonols from Chrysosplenium americanum.
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Enzymatic O-methylation of plant secondary metabolites is an important mechanism for the inactivation of reactive hydroxyl groups and for the modification of their solubility. A cDNA clone (pFOMT3') encoding the gene for the 3'/5'-O-methylation of partially methylated flavonols was isolated from
Flavonol kaempferol improves chronic hyperglycemia-impaired pancreatic beta-cell viability and insulin secretory function.
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Considerable evidence shows that chronic hyperglycemia can cause pancreatic beta-cell dysfunction, which contributes to progressive deterioration of glucose homeostasis and overt diabetes. In the present study, we found that kaempferol, a flavonol compound present in various Chinese medicinal herbs,
Cloning and expression of flavonol synthase from Petunia hybrida.
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Flavonols are important co-pigments in flower colour and are also essential for pollen tube growth. In petunia, flavonol synthesis is controlled by the Fl locus. Flavonol synthase (FLS) belongs to the 2-oxoglutarate-dependent dioxygenase family. Dioxygenase gene fragments were amplified by PCR on
Dietary flavonoids and the prevalence and 15-y incidence of age-related macular degeneration.
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UNASSIGNED
The majority of research performed to date has examined the effects of commonly known antioxidants such as vitamins C, E, and A and carotenoids on age-related macular degeneration (AMD) risk and progression. To date, there is limited research on promising phytochemicals with antioxidant
Silencing of the tapetum-specific zinc finger gene TAZ1 causes premature degeneration of tapetum and pollen abortion in petunia.
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TAZ1 (TAPETUM DEVELOPMENT ZINC FINGER PROTEIN1; renamed from PEThy; ZPT3-2) cDNA was first isolated as an anther-specific cDNA from petunia. Here, we report a functional characterization that includes analysis of spatial and temporal expression profiles and examination of anther phenotypes in
Anti-ageing and anti-Parkinsonian effects of natural flavonol, tambulin from Zanthoxyllum aramatum promotes longevity in Caenorhabditis elegans.
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Ageing is a progressive deterioration in functional and structural well-being of the body, accompanied with age-associated neurological disorders such as Parkinson's disease (PD), Alzheimer's disease and Huntington's disease. PD is marked with motor function decline, progressive neurodegeneration
UDP-glucose:3-deoxyanthocyanidin 5-O-glucosyltransferase from Sinningia cardinalis.
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3-Deoxyanthocyanins are rare anthocyanin pigments produced by some mosses, ferns, and higher plants. The enzymes and genes responsible for biosynthesis of 3-deoxyanthocyanins have not been well characterized. We identified a novel gene encoding UDP-glucose:3-deoxyanthocyanidin
Comparative transcriptome analysis provides global insight into gene expression differences between two orchid cultivars.
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The orchids GL and YL are two cultivars of Cymbidium longibracteatum. YL displays an obviously yellowing rhizome and yellow leaves, while GL ('Longchangsu') shows dark green leaves and greenish rhizome. But the molecular mechanism for the differences between the two cultivars is poorly understood.
Cloning and characterization of a glucosyltransferase from Crocus sativus stigmas involved in flavonoid glucosylation.
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BACKGROUND
Flavonol glucosides constitute the second group of secondary metabolites that accumulate in Crocus sativus stigmas. To date there are no reports of functionally characterized flavonoid glucosyltransferases in C. sativus, despite the importance of these compounds as antioxidant agents.
The effect of postharvest ripening on strawberry bioactive composition and antioxidant potential.
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BACKGROUND
The aim of the present work was to evaluate the phytochemical profile and the antioxidant activity of strawberry fruit (cv. Camarosa) upon postharvest ripening at room temperature (20 °C) and to correlate them with qualitative attributes.
RESULTS
'Camarosa' fruit retained an appreciable
Protective Effect of Highly Polymeric A-Type Proanthocyanidins from Seed Shells of Japanese Horse Chestnut (Aesculus turbinata BLUME) against Light-Induced Oxidative Damage in Rat Retina.
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Retinal tissue is exposed to oxidative stress caused by visible light. Light-damaged rat used in age-related macular degeneration (AMD) studies clarified that antioxidants decrease retinal light damage. Albino rats were exposed to 5000 Lux light for 12 h with oral administration of the polyphenolic
Variation in Seed Metabolites between Two Indica Rice Accessions Differing in Seed Longevity
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For a better understanding of germination after seed storage, metabolite profiling was conducted using hybrid triple quadrupole time-of-flight (QTOF) mass spectrometry. After moisture content (MC) equilibration, seeds of "WAS170" (short-lived) and "IR65483" (long-lived) were stored at 10.9% MC and
Ginkgo biloba--an appraisal.
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Ginkgo biloba has been used in traditional Chinese medicine for about 5000 years. A standardized preparation, EGb 761 has been recently prepared. The pharmacologically active constituents, flavonol glycosides and the terpene lactones are standardized. The terpene lactones comprise of ginkgolides A,
Antioxidant flavonoid glycosides from Evolvulus alsinoides.
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Oxidative damage is an established outcome of chronic stress. Thus, the present study was designed to investigate the modulatory role of ethanolic extract of Evolvulus alsinoides (EA) in terms of oxidative alterations at peripheral and central level in rats subjected to chronic unpredictable stress
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