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cryptoxanthin

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https://www.readbyqxmd.com/read/28646243/provitamin-a-carotenoids-from-an-engineered-high-carotenoid-maize-are-bioavailable-and-zeaxanthin-does-not-compromise-%C3%AE-carotene-absorption-in-poultry
#1
Joana Díaz-Gómez, Jose A Moreno, Eduardo Angulo, Gerhard Sandmann, Changfu Zhu, Teresa Capell, Carmina Nogareda
High-carotenoid (HC) maize, a biofortified staple crop which accumulates β-carotene, β-cryptoxanthin, lutein and zeaxanthin, was used as a feed component in a chicken feeding trial to assess the bioavailability of provitamin A (PVA) carotenoids in the kernel matrix compared to the synthetic and natural color additives routinely used in the poultry industry. We found that the PVA carotenoids in HC maize were not metabolized in the same manner: β-carotene was preferentially converted into retinol in the intestine whereas β-cryptoxanthin accumulated in the liver...
June 23, 2017: Transgenic Research
https://www.readbyqxmd.com/read/28615062/metabolic-and-transcriptional-elucidation-of-the-carotenoid-biosynthesis-pathway-in-peel-and-flesh-tissue-of-loquat-fruit-during-on-tree-development
#2
Margarita Hadjipieri, Egli C Georgiadou, Alicia Marin, Huertas M Diaz-Mula, Vlasios Goulas, Vasileios Fotopoulos, Francisco A Tomás-Barberán, George A Manganaris
BACKGROUND: Carotenoids are the main colouring substances found in orange-fleshed loquat fruits. The aim of this study was to unravel the carotenoid biosynthetic pathway of loquat fruit (cv. 'Obusa') in peel and flesh tissue during distinct on-tree developmental stages through a targeted analytical and molecular approach. RESULTS: Substantial changes regarding colour parameters, both between peel and flesh and among the different developmental stages, were monitored, concomitant with a significant increment in carotenoid content...
June 14, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28605870/foraging-in-maize-field-areas-a-risky-business
#3
Monique Boily, Philippe Aras, Catherine Jumarie
In Quebec, Canada, the cultivation of maize dominates the agricultural territory. This crop requires a sustained supply of fertilizers from different sources: chemical, natural or from residual materials (sludge). These amendments contain metallic trace elements, which may lead to metal-contaminated maize pollen, a possible source of prooxidants for the foraging bees. Our objective was to determine whether maize fields environment influences the oxidation processes and the accumulation of metals in bees. A few days prior to pollen shedding, beehives were installed in maize fields: one organically grown (site A) and three conventionally grown (sites B, C and D)...
June 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28605127/serum-carotenoids-and-colorectal-cancer-risk-a-case-control-study-in-guangdong-china
#4
Jing Huang, Min-Shan Lu, Yu-Jing Fang, Ming Xu, Wu-Qing Huang, Zhi-Zhong Pan, Yu-Ming Chen, Cai-Xia Zhang
SCOPE: Previous epidemiological studies on the association between circulating carotenoids and the risk of colorectal cancer drew inconclusive conclusions. This study aimed to examine serum carotenoids in relation to colorectal cancer risk in a Chinese population. METHODS AND RESULTS: One case-control study beginning from July 2010, consecutively recruited 538 eligible colorectal cancer cases and 564 age (5-year interval) and sex frequency-matched controls. Serum levels of α-carotene, β-carotene, β-cryptoxanthin, lycopene and lutein/ zeaxanthin were detected by HPLC...
June 12, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28587685/carotenoid-dietary-intakes-and-plasma-concentrations-are-associated-with-heel-bone-ultrasound-attenuation-and-osteoporotic-fracture-risk-in-the-european-prospective-investigation-into-cancer-and-nutrition-epic-norfolk-cohort
#5
Richard P G Hayhoe, Marleen A H Lentjes, Angela A Mulligan, Robert N Luben, Kay-Tee Khaw, Ailsa A Welch
Carotenoids are found in abundance in fruit and vegetables, and may be involved in the positive association of these foods with bone health. This study aimed to explore the associations of dietary carotenoid intakes and plasma concentrations with bone density status and osteoporotic fracture risk in a European population. Cross-sectional analyses (n 14 803) of bone density status, using calcaneal broadband ultrasound attenuation (BUA) and longitudinal analyses (n 25 439) of fracture cases were conducted on data from the prospective European Prospective Investigation into Cancer and Nutrition-Norfolk cohort of middle-aged and older men and women...
June 7, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28551247/identification-and-quantitative-analysis-of-%C3%AE-cryptoxanthin-and-%C3%AE-citraurin-esters-in-satsuma-mandarin-fruit-during-the-ripening-process
#6
Gang Ma, Lancui Zhang, Kohei Iida, Yuki Madono, Witchulada Yungyuen, Masaki Yahata, Kazuki Yamawaki, Masaya Kato
In this study, to investigate the xanthophyll accumulation in citrus fruits, the major fatty acid esters of β-cryptoxanthin and β-citraurin were identified, and changes in their contents were investigated in two Satsuma mandarin varieties, 'Miyagawa-wase' and 'Yamashitabeni-wase', during the ripening process. The results showed that β-cryptoxanthin and β-citraurin were mainly esterified with lauric acid, myristic acid, and palmitic acid in citrus fruits. During the ripening process, β-cryptoxanthin laurate, myristate, and palmitate were accumulated gradually in the flavedos and juice sacs of the two varieties...
November 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28544535/%C3%AE-cryptoxanthin-exerts-greater-cardioprotective-effects-on-cardiac-ischemia-reperfusion-injury-than-astaxanthin-by-attenuating-mitochondrial-dysfunction-in-mice
#7
Wanpitak Pongkan, Osamu Takatori, Yinhua Ni, Liang Xu, Naoto Nagata, Siriporn C Chattipakorn, Soichiro Usui, Shuichi Kaneko, Masayuki Takamura, Minoru Sugiura, Nipon Chattipakorn, Tsuguhito Ota
SCOPE: β-Cryptoxanthin and astaxanthin are antioxidant carotenoid pigments that inhibit lipid peroxidation as potently as vitamin E. We hypothesized that acute treatment with β-cryptoxanthin and astaxanthin causes similar reductions in the sizes of cardiac infarcts caused by ischemia-reperfusion (I/R) injury by attenuating oxidative stress and cardiac mitochondrial dysfunction. METHODS AND RESULTS: C57BL/6 mice (n = 36) were randomized to receive vehicle, β-cryptoxanthin, astaxanthin or vitamin E at 50 mg/kg by gavage feeding prior to I/R injury...
May 20, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28529085/variations-in-native-protein-glycation-and-plasma-antioxidants-in-several-birds-of-prey
#8
Tana Ingram, Jessica Zuck, Chad R Borges, Patrick Redig, Karen L Sweazea
Birds are an anomaly among vertebrates as they are remarkably long-lived despite having naturally high blood glucose and metabolic rates. For mammals, hyperglycemia leads to oxidative stress and protein glycation. In contrast, many studies have shown that domestic and wild birds are relatively resistant to these glucose-mediated pathologies. Surprisingly very little research has examined protein glycation in birds of prey, which by nature consume a diet high in protein and fat that promotes gluconeogenesis...
May 19, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28527371/lutein-exerts-anti-inflammatory-effects-in-patients-with-coronary-artery-disease
#9
Rosanna W S Chung, Per Leanderson, Anna K Lundberg, Lena Jonasson
BACKGROUND AND AIMS: Many coronary artery disease (CAD) patients exhibit chronic low-grade inflammation. Carotenoids are anti-oxidants with potential anti-inflammatory properties. Here, we first assessed relationships between interleukin (IL)-6 and individual carotenoids in plasma from CAD patients. Based on the results, we proceeded to assess anti-inflammatory effects of one carotenoid, lutein, in peripheral blood mononuclear cells (PBMCs) from CAD patients. METHODS: Lutein + zeaxanthin (isomers with lutein being dominant), β-cryptoxanthin, lycopene, α- and β-carotene and IL-6 were measured in plasma from 134 patients with stable angina (SA) and 59 patients with acute coronary syndrome...
May 6, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28520939/dietary-intake-of-antioxidant-vitamins-and-carotenoids-and-risk-of-developing-active-tuberculosis-in-a-prospective-population-based-cohort
#10
Avril Z Soh, Cynthia B E Chee, Yee-Tang Wang, Jian-Min Yuan, Woon-Puay Koh
Antioxidants may protect against oxidative stress, which is associated with tuberculosis disease. However, direct evidence for the protective association between dietary antioxidants and tuberculosis incidence in humans has been lacking. The relation between intake of antioxidant vitamins (A, C, D, E) and individual carotenoids (α-carotene, β-carotene, β-cryptoxanthin, lycopene, lutein) and tuberculosis incidence was examined in the Singapore Chinese Health Study, a prospective cohort of 63,257 adults 45-74 years old enrolled during 1993-1998...
May 18, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28515376/carotenoids-of-red-brown-and-black-specimens-of-plectropomus-leopardus-the-coral-trout-suziara-in-japanese
#11
Takashi Maoka, Wataru Sato, Hidetada Nagai, Toshiyuki Takahashi
This study investigated the carotenoids occurring in the integument of Plectropomus leopardus, the coral trout. For a red specimen, the major carotenoids included astaxanthin diester and monoester, as well as α-cryptoxanthin ester, tunaxanthin diester, adonixanthin diester, adonirubin ester, and adonirubin; for brown and black specimens, tunaxanthin diester was the main carotenoid. (1)H-NMR and MS spectral analyses showed that docosahexaenoic acid was the sole fatty acid esterified with xanthophylls in the coral trout...
May 17, 2017: Journal of Oleo Science
https://www.readbyqxmd.com/read/28490387/serum-carotenoid-and-retinol-levels-in-african-caribbean-tobagonian-men-with-high-prostate-cancer-risk-in-comparison-with-african-american-men
#12
Alicia C McDonald, Clareann H Bunker, Jay Raman, John Richie, Alan L Patrick
Black men are known to have a higher risk for prostate cancer (PC). Carotenoids and retinol, linked to PC, have not been compared in different black populations at risk. We examined serum carotenoid and retinol levels between PC-free African-Caribbean (AC) Tobagonian men with a high PC risk (high-grade prostatic intraepithelial neoplasia, atypical foci or repeated abnormal PC screenings) and African-American (AA) men with elevated serum prostate-specific antigen (PSA) levels (≥4 ng/ml). AC men who participated in the 2003 lycopene clinical trial and AA men who participated in the 2001-2006 National Health and Nutrition Examination Survey were compared...
May 11, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28490117/carotenoid-retention-in-biofortified-maize-using-different-post-harvest-storage-and-packaging-methods
#13
Víctor Taleon, Luke Mugode, Luisa Cabrera-Soto, Natalia Palacios-Rojas
Orange maize is being promoted as a source of provitamin A carotenoids (pVAC) in Zambia. Carotenoid retention in orange maize grains stored in metal silos, multilayer polyethylene and common woven bags, and maize meal packaged in single and multilayer polyethylene bags was evaluated. Significant differences in total pVAC retention were found between grain storage methods (48.1-57.2%) after 6months of storage. Total pVAC retention in hammer meal (73.1-73.5%) was higher than in breakfast meal (64.3-69.3%) after 4months of storage; however, no differences in pVAC retention were found between meal types when stored in single and multilayer polyethylene bags...
October 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28431132/revealing-the-biochemical-and-genetic-basis-of-colour-variation-in-a-polymorphic-lizard
#14
Claire A McLean, Adrian Lutz, Katrina J Rankin, Devi Stuart-Fox, Adnan Moussalli
Determining the mechanistic and genetic basis of animal coloration is essential to understand the costs and constraints on colour production, and the evolution and maintenance of phenotypic variation. However, genes underlying structural colour and widespread pigment classes apart from melanin remain largely uncharacterised, in part due to restricted taxonomic focus. We combined liquid chromatography-mass spectrometry and RNA-seq gene expression analyses to characterise the pigments and genes associated with skin colour in the polymorphic lizard, Ctenophorus decresii...
April 18, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28421798/assessment-of-individual-carotenoid-and-vitamin-a-dietary-intake-in-overweight-and-obese-dominican-subjects
#15
Madeline Durán-Cabral, Irene Fernández-Jalao, Rocío Estévez-Santiago, Begoña Olmedilla Alonso
INTRODUCTION: Carotenoids are plant pigment with important biological activities in humans, such as provitamin-A among others. At present, there are no individual carotenoid intake data in the Dominican population, which is at risk of vitamin A deficiency and has an important percentage of overweight and obese individuals . OBJECTIVE: To assess the individual components of vitamin A intake (retinol, α-carotene, β-carotene and β-cryptoxanthin) and that of other relevant dietary carotenoids like lutein, zeaxanthin and lycopene of Dominican daily food intake...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28420094/nonalcoholic-fatty-liver-disease-and-insulin-resistance-new-insights-and-potential-new-treatments
#16
REVIEW
Hironori Kitade, Guanliang Chen, Yinhua Ni, Tsuguhito Ota
Nonalcoholic fatty liver disease (NAFLD) is one of the most common chronic liver disorders worldwide. It is associated with clinical states such as obesity, insulin resistance, and type 2 diabetes, and covers a wide range of liver changes, ranging from simple steatosis to non-alcoholic steatohepatitis (NASH), liver cirrhosis, and hepatocellular carcinoma. Metabolic disorders, such as lipid accumulation, insulin resistance, and inflammation, have been implicated in the pathogenesis of NAFLD, but the underlying mechanisms, including those that drive disease progression, are not fully understood...
April 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28386384/association-of-serum-carotenoid-retinol-and-tocopherol-concentrations-with-the-progression-of-parkinson-s-disease
#17
Ji Hyun Kim, Jinah Hwang, Eugene Shim, Eun-Jung Chung, Sung Hee Jang, Seong-Beom Koh
BACKGROUND/OBJECTIVES: A pivotal role of oxidative stress has been emphasized in the pathogenesis as well as in the disease progression of Parkinson's disease (PD). We aimed at investigating serum levels of antioxidant vitamins and elucidating whether they could be associated with the pathogenesis and progression of PD. MATERIALS/METHODS: Serum levels of retinol, α- and γ-tocopherols, α- and β-carotenes, lutein, lycopene, zeaxanthin and β-cryptoxanthin were measured and compared between 104 patients with idiopathic PD and 52 healthy controls matched for age and gender...
April 2017: Nutrition Research and Practice
https://www.readbyqxmd.com/read/28371918/functional-lycopene-cyclase-crua-in-cyanobacterium-arthrospira-platensis-nies-39-and-its-role-in-carotenoid-synthesis
#18
Kenjiro Sugiyama, Masashi Ebisawa, Masaharu Yamada, Yoshiki Nagashima, Hideyuki Suzuki, Takashi Maoka, Shinichi Takaichi
The genus Arthrospira is filamentous, non-nitrogen-fixing cyanobacteria that is commercially important. We identified the molecular structures of carotenoids in Arthrospira platensis NIES-39. The major carotenoid identified was β-carotene. In addition, the hydroxyl derivatives of β-cryptoxanthin and (3R,3'R)-zeaxanthin were also found to be present. The carotenoid glycosides were identified as (3R,2'S)-myxol 2'-methylpentoside and oscillol 2,2'-dimethylpentoside. The methylpentoside moiety was a mixture of fucoside and chinovoside in an approximate ratio of 1 : 4...
April 1, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28333357/dietary-patterns-foods-and-nutrients-in-male-fertility-parameters-and-fecundability-a-systematic-review-of-observational-studies
#19
Albert Salas-Huetos, Mònica Bulló, Jordi Salas-Salvadó
BACKGROUND: Infertility is a global public health issue, affecting 15% of all couples of reproductive age. Male factors, including decreased semen quality, are responsible for ~25% of these cases. The dietary pattern, the components of the diet and nutrients have been studied as possible determinants of sperm function and/or fertility. OBJECTIVE AND RATIONALE: Previous systematic reviews have been made of the few heterogeneous low-quality randomized clinical trials (RCTs) conducted in small samples of participants and investigating the effect of specific nutrients and nutritional supplements on male infertility...
March 10, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28330161/in-vitro-propagation-carotenoid-fatty-acid-and-tocopherol-content-of-ajuga-multiflora-bunge
#20
Iyyakkannu Sivanesan, Ramesh Kumar Saini, Rafi Noorzai, Ahmad Jawid Zamany, Doo Hwan Kim
The effect of plant growth regulators on shoot proliferation from shoot tip explants of Ajuga multiflora was studied. The highest number of shoots (17.1) was observed when shoot tip explants were cultured on Murashige and Skoog (MS) medium fortified with 8.0 µM 6-Benzyladenine (BA) and 2.7 µM α-naphthaleneacetic acid (NAA). The mean number of shoots per explant was increased 1.6-fold in liquid medium as compared with semi-solid medium. Maximum rooting (100 %) with an average of 7.2 roots per shoot was obtained on MS basal medium...
June 2016: 3 Biotech
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