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Knockout of the Bcmo1 gene results in an inflammatory response in female lung, which is suppressed by dietary beta-carotene.

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Beta-carotene 15,15'-monooxygenase 1 knockout (Bcmo1 (-/-)) mice accumulate beta-carotene (BC) similarly to humans, whereas wild-type (Bcmo1 (+/+)) mice efficiently cleave BC. Bcmo1 (-/-) mice are therefore suitable to investigate BC-induced alterations in gene expression in lung, assessed by

Retinol, β-carotene and oxidative stress in systemic inflammatory response syndrome.

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OBJECTIVE patients suffering systemic inflammatory response syndrome (SIRS) constitute a group susceptible to elevated levels of oxidative stress. This study's aim is to evaluate the state of oxidative stress and levels of serum retinol and β-carotene in these patients. METHODS forty-six patients

Interactions of beta-carotene and flavonoids on the secretion of pro-inflammatory mediators in an in vitro system.

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Chronic inflammation, a process linked to increased oxidative stress, may induce many diseases. Whether beta-carotene prevents inflammation is unclear. Using phorbol-12-myristate-13-acetate (PMA)-stimulated HL-60 cells, we investigated the effects of 2 or 20 microM beta-carotene on the inflammatory

β-Carotene can reverse dysregulation of iron protein in an in vitro model of inflammation.

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Anemia of chronic disease is frequently seen in chronic inflammatory conditions. Its hallmark is disrupted iron homeostasis, with increased uptake and retention of iron in cells of the reticuloendothelial system. Using the Caco-2 cell line as an in vitro model for iron absorption, local intestinal

Beta-carotene metabolites enhance inflammation-induced oxidative DNA damage in lung epithelial cells.

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beta-Carotene (BC) intake has been shown to enhance lung cancer risk in smokers and asbestos-exposed subjects (according to the ATBC and CARET studies), but the mechanism behind this procarcinogenic effect of BC is unclear. Both smoking and asbestos exposure induce an influx of inflammatory

Pre-treatment with Beta Carotene Gives Protection Against Nephrotoxicity Induced by Bromobenzene via Modulation of Antioxidant System, Pro-inflammatory Cytokines and Pro-apoptotic Factors.

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Bromobenzene is an environmental toxin which causes hepatotoxicity, and the secondary metabolites on biotransformation cause nephrotoxicity. The objective of this study was to assess the alleviation of the nephrotoxic effect of bromobenzene by beta carotene in female Wistar albino rats. Beta

Dietary Dunaliella bardawil, a beta-carotene-rich alga, protects against acetic acid-induced small bowel inflammation in rats.

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BACKGROUND Reactive oxygen species mediate tissue injury in inflammatory bowel disease. Beta-carotene is known as a potent free radical quencher and antioxidant. OBJECTIVE The authors evaluated the efficacy of prefeeding Dunaliella bardawil, rich in beta-carotene, to ameliorate acid-induced

Combination of β-carotene and quercetin against benzo[a]pyrene-induced pro-inflammatory reaction accompanied by the regulation of antioxidant enzyme activity and NF-κB translocation in Mongolian gerbils.

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OBJECTIVE We have previously shown that quercetin modulates the proinflammatory effect of β-carotene (BC) induced by oral benzo[a]pyren (Bap) partly through the regulation of the JNK pathway. In the present study, we determined whether the combination of BC and quercetin regulates the antioxidant

The effects of serum beta-carotene concentration and burden of inflammation on all-cause mortality risk in high-functioning older persons: MacArthur studies of successful aging.

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BACKGROUND It remains unclear to what extent the associations between low serum beta-carotene concentration and increased risk for cardiovascular disease and cancers are attributable to inflammation. The objective of this study was to evaluate simultaneously the effects of serum beta-carotene

Quercetin supplementation suppresses the secretion of pro-inflammatory cytokines in the lungs of Mongolian gerbils and in A549 cells exposed to benzo[a]pyrene alone or in combination with β-carotene: in vivo and ex vivo studies.

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In vitro studies have shown that quercetin modulates the effects of β-carotene induced by stimulants. Whether these reactions happen in vivo, however, is unclear. Thus, we investigated whether quercetin supplementation suppresses the harmful effects of benzo[a]pyrene (BaP) alone or combined with

Astaxanthin and β-carotene in Helicobacter pylori-induced Gastric Inflammation: A Mini-review on Action Mechanisms.

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Helicobacter pylori is a dominant bacterium living in the human gastric tissues. In H. pylori-infected tissues, the infiltrated inflammatory cells produce reactive oxygen species (ROS), leading to gastric inflammation with production of various mediators. According to numerous epidemiological

β-Carotene Concentration and Its Association with Inflammatory Biomarkers in Spanish Schoolchildren.

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To examine the correlation between inflammatory biomarkers and plasma β-carotene levels in children. A total of 564 Spanish schoolchildren aged 9-12 were observed and studied. Plasma β-carotene levels were assessed by HPLC. A β-carotene level <4.83 µg/dL (0.09 µmol/L) was considered deficient.

[The anti-inflammatory activity of intal and beta-carotene in a model of experimental granulomatous lung inflammation].

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A-25 sephadex-induced granulomatous inflammation of the lungs in rats was treated with beta-carotene and intal in inhalations. Both drugs showed antiinflammatory activity reducing the area of alveolitis and emphysema in the lungs, number of neutrophils and lymphocytes in the bronchoalveolar fluid.

β-Carotene prevents weaning-induced intestinal inflammation by modulating gut microbiota in piglets.

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Weaning is an important stage in the life of young mammals, which is associated with intestinal inflammation, gut microbiota disorders, and even death. β-carotene displays anti-inflammatory and antioxidant activities, which can prevent the development of inflammatory diseases. However,

Relationship between systemic markers of inflammation and serum beta-carotene levels.

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BACKGROUND Low serum levels of beta-carotene have been associated with increased risk of cancer and cardiovascular disease. However, in clinical trials, supplementation of the diet with beta-carotene either had no benefit or caused harm. This pattern of findings raises the possibility that

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