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Lutein


herbal formula to ward of hair loss and promote hair growth



References online: Lutein




Lutein and Eye Nutrition Center: Home| Lutein and Eye Nutrition Center: What is Lutein ?| Lutein and Eye Nutrition Center: What does Lutein do for us ?| Lutein and Eye Nutrition Center: Are we taking enough lutein ?| Lutein and Eye Nutrition Center: Are there other eye nutritions than Lutein ?| Lutein and Eye Nutrition Center: Research Reports: Role of Carotenoids| Lutein and Eye Nutrition Center: Research Reports: Serum lutein and carotenoid level in response to taking dietary carotenoids| Lutein and Eye Nutrition Center: Research Reports: Lutein and Lung Function| Lutein and Eye Nutrition Center: Research Reports: Lutein and Congestive Heart Failure| Lutein and Eye Nutrition Center: Research Reports: Lutein, Lycopene, and Prostate Cancer| Lutein and Eye Nutrition Center: Research Reports: Lutein, carotenoids, and breast cancer| Lutein and Skin Cancer| Lutein: General Information Page| Lutein and Age-related Macular Degeneration| Lutein improves visual function in age-related cataracts patients| Lutein may be a nutritional factor for protecting lens in age-related cataracts patients| Intakes of antioxidants in coffee, wine, and vegetables are correlated with plasma carotenoids in humans.| Plasma Antioxidant Status, Immunoglobulin G Oxidation and Lipid Peroxidation in Demented Patients: Relevance to Alzheimer Disease and Vascular Dementia.| Photo-oxidative stress in a xanthophyll-deficient mutant of Chlamydomonas.| Application of tristimulus colorimetry to estimate the carotenoids content in ultrafrozen orange juices.| Macular pigment: quantitative analysis on autofluorescence images.| QTL and candidate genes phytoene synthase and zeta-carotene desaturase associated with the accumulation of carotenoids in maize.| Thermal processing of vegetables increases cis isomers of lutein and zeaxanthin.| Serum vitamins and the subsequent risk of bladder cancer.| The relationship between dietary carotenoids and prostate cancer risk in Southeast Chinese men.| Macular pigments: their characteristics and putative role.| The effect of an acute phase response on tissue carotenoid levels of growing chickens (Gallus gallus domesticus).| Resonance Raman measurement of macular carotenoids in retinal, choroidal, and macular dystrophies.| Assessment of carotenoid bioavailability of whole foods using a Caco-2 cell culture model coupled with an in vitro digestion.| Lutein, zeaxanthin, macular pigment, and visual function in adult cystic fibrosis patients.| Serum Carotenoid and Retinol Levels during Childhood Infections.| Chlorophyll, carotenoids and the activity of the xanthophyll cycle.| De-epoxidation of violaxanthin in light-harvesting complex I proteins.| Carotenogenesis during tuber development and storage in potato. aston.ac.uk

The role of nutritional supplementation in prevention of onset or progression of ocular disease is of interest to health care professionals and patients. The aim of this review is to identify those antioxidants most appropriate for inclusion in an ideal ocular nutritional supplement, suitable for those with a family history of glaucoma, cataract, or age-related macular disease, or lifestyle factors predisposing onset of these conditions, such as smoking, poor nutritional status, or high levels of sunlight exposure. It would also be suitable for those with early stages of age-related ocular disease. Literature searches were carried out on Web of Science and PubMed for articles relating to the use of nutrients in ocular disease. Those highlighted for possible inclusion were vitamins A, B, C and E, carotenoids beta-carotene, lutein, and zeaxanthin, minerals selenium and zinc, and the herb, Ginkgo biloba. Conflicting evidence is presented for vitamins A and E in prevention of ocular disease; these vitamins have roles in the production of rhodopsin and prevention of lipid peroxidation respectively. B vitamins have been linked with a reduced risk of cataract and studies have provided evidence supporting a protective role of vitamin C in cataract prevention. Beta-carotene is active in the prevention of free radical formation, but has been linked with an increased risk of lung cancer in smokers. Improvements in visual function in patients with age-related macular disease have been noted with lutein and zeaxanthin supplementation. Selenium has been linked with a reduced risk of cataract and activates the antioxidant enzyme glutathione peroxidase, protecting cell membranes from oxidative damage while zinc, although an essential component of antioxidant enzymes, has been highlighted for risk of adverse effects. As well as reducing platelet aggregation and increasing vasodilation, Gingko biloba has been linked with improvements in pre-existing field damage in some patients with normal tension glaucoma. We advocate that vitamins C and E, and lutein/zeaxanthin should be included in our theoretically ideal ocular nutritional supplement.

lutein online source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15228513&dopt=Abstract lutein



J Agric Food Chem. 2004 Jun 30;52(13):4330-7.
Assessment of carotenoid bioavailability of whole foods using a Caco-2 cell culture model coupled with an in vitro digestion.

Liu CS, Glahn RP, Liu RH.

Department of Food Science and Institute of Comparative and Environmental Toxicology, Stocking Hall, Cornell University, Ithaca, New York 14853, USA.

Epidemiological studies have shown that consumption of carotenoid-rich fruits and vegetables is associated with a reduced risk of developing chronic diseases. beta-Carotene, alpha-carotene, and beta-cryptoxanthin are precursors of vitamin A, a nutrient essential for human health. However, little is known about the bioavailability of carotenoids from whole foods. This study characterized the intestinal uptake performance of carotenoids using monolayers of differentiated Caco-2 human intestinal cells and mimicked human digestion to assess carotenoid absorption from carrots and corn. Results showed that Caco-2 cellular uptake of beta-carotene and zeaxanthin was higher than that of lutein. Uptake performances of pure carotenoids and carotenoids from whole foods by Caco-2 cells were both curvilinear, reaching saturated levels after 4 h of incubation. The time kinetics and dose response of carotenoid uptake presented a similar pattern in Caco-2 cells after plating for 2 and 14 days. Furthermore, the applicability of this new model was verified with whole grain corn, showing that cooked corn grain significantly enhanced carotenoid bioavailability. These results support the feasibility of the in vitro digestion cell model for assessing carotenoid absorption from whole foods as a suitable and cost-effective physiological alternative to current methodologies.

lutein online source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15212488&dopt=Abstract lutein



Plant Physiol Biochem. 2004 May;42(5):395-402.
Photosynthetic pigment composition and photosystem II photochemistry of wheat ears.

Lu Q, Lu C.

Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.

The characteristics of pigment composition and photosystem II (PSII) photochemistry in the flag leaf and ear parts of wheat (Triticum aestivum L.) grown in the field was compared. At the early stage of flowering, awns and the flag leaf showed the highest values in the maximal efficiency of PSII photochemistry (Fv/Fm), actual PSII efficiency (phi(PSII)), photochemical quenching (qP), and the efficiency of excitation capture by open PSII centres (Fv/F'm), followed by glumes, lemmas, and paleae, respectively except that no differences in F'v/F'm were observed among glumes, leamms, and paleae. With progressing grain filling, there was a change in the photosynthetic pigment stoichiometry. In the ear parts, neoxanthin and antheraxanthin decreased equally with chlorophyll levels. Lutein and zeaxanthin decreased less than chlorophyll levels while beta-carotene and violaxanthin decreased faster than chlorophyll levels. No big differences in pigment composition were observed among different ear parts. For the flag leaf, neoxanthin and beta-carotene decreased concomitantly with chlorophyll, whereas lutein and xanthophyll cycle pigment were less affected, leading to increases in lutein/chlorophyll and xanthophyll cycle pigment/chlorophyll ratios. Fv/Fm, phi(PSII), qP, and F'v/F'm decreased gradually in the flag leaf and ear parts but to different extents. The largest changes were observed in awns, followed by the lemmas of floret 2, the lemmas of floret 1, glumes, and the flag leaf, respectively. The results suggest that during grain filling, a down-regulation of PSII associated with an increase of the de-epoxidation state of the xanthophyll cycle carotenoids occurred in the flag leaf but not in the ear parts. Copyright 2004 Elsevier SAS

lutein online source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15191742&dopt=Abstract lutein



Methods Mol Biol. 2004;274:137-48.
The determination and quantification of photosynthetic pigments by reverse phase high-performance liquid chromatography, thin-layer chromatography, and spectrophotometry.

Pocock T, Krol M, Huner NP.

Chorophylls and carotenoids are functionally important pigment molecules in photosynthetic organisms. Methods for the determination of chlorophylls a and b, beta-carotene, neoxanthin, and the pigments that are involved in photoprotective cycles such as the xanthophylls are discussed. These cycles involve the reversible de-epoxidation of violaxanthin into antheraxanthin and zeaxanthin, as well as the reversible de-epoxidation of lutein-5,6-epoxide into lutein. This chapter describes pigment extraction procedures from higher plants and green algae. Methods for the determination and quantification using high-performance liquid chromatograpy (HPLC) are described as well as methods for the separation and purification of pigments for use as standards using thin-layer chromatography (TLC). In addition, several spectrophotometric methods for the quantification of chlorophylls a and b are described.

lutein online source: www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15187276&dopt=Abstract lutein







Hair loss is genetically influenced, but it is always difficult to predict. Overall, more than 50% of US men suffer hair loss by their age of 45. Men are more likely to lose hair than women. Hair Million offers an alternative solution to hair loss problems. Anecdotal evidence and personal experiences indicate the efficacy of this herbal blend in improveming age-related hair thinning and hair loss for a number of people who take it. The mechanism of action as to how Hair Million works to help stop hair loss, and promote hair growth is unknown. It is only known by anecdotal observations. There has been no clinical trials nor placebo controlled statistical analysis on the efficacy of Hair Million on hair loss and hair growth. Propecia is a clinically tested drug for the purpose of reversing hair loss.
An important advantage of Hair Million is that Hair Million works for women as well as men.







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