Objective: This study aimed to establish reference ranges of serum concentrations of copper, zinc, retinol, alpha-tocopherol, copper:caeruloplasmin and copper:zinc ratios in a group of healthy Omani men and women.
Materials And Methods: Assay techniques employed were atomic absorption spectrophotometry (copper and zinc), reverse-phase high-pressure liquid chromatography with isocratic elution (retinol and alpha-tocopherol), immunonephelometry (caeruloplasmin) and spectrophotometry (albumin and cholesterol).
Results: The mean +/- SD (microM) obtained for copper, zinc, retinol, and alpha-tocopherol were 15.9 +/- 3.0, 14.2 +/- 2.0, 1.45 +/- 0.39 and 16.9 +/- 4.4, respectively. The mean +/- SD for copper:zinc and copper:caeruloplasmin ratios were 1.15 +/- 0.30 micromol/mmol and 6.99 +/- 0.84 micromol/g, respectively. Significantly higher (p < 0.0001) copper and caeruloplasmin concentrations, copper:zinc and copper:caeruloplasmin ratios and lower zinc, retinol, alpha-tocopherol, cholesterol concentrations and alpha-tocopherol:cholesterol ratio were present in women compared to men. Age appeared to be associated with copper and retinol concentrations, and copper:caeruloplasmin ratios in women; in men, the association was mostly moderate with caeruloplasmin, alpha-tocopherol, cholesterol concentrations and alpha-tocopherol:cholesterol ratios. Smokers had decreased albumin (p = 0.002), zinc (p = 0.023) concentrations, and copper:caeruloplasmin ratios (p = 0.002), increased alpha-tocopherol concentrations (p = 0.016) and alpha-tocopherol:cholesterol ratios (p = 0.021) compared with non-smokers. Deficiency incidence was < or =5% for all investigated parameters.
Conclusions: Reference ranges of micronutrient concentrations and micromineral ratios were established for Omani subjects. The mean values of several micronutrients were lower than those reported for other populations and some showed gender effects.
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http://dx.doi.org/10.1159/000129616 | DOI Listing |
J Mol Graph Model
March 2025
Department of Chemistry, Faculty of Science and Technology, Muban ChomBueng Rajabhat University, Chom Bueng, Ratchaburi, 70150, Thailand. Electronic address:
Retinol, α-tocopherol and phylloquinone (vitamins A, E, and K) are presented in high concentrations within the chloroplast and leaves of most plants. They are fat-soluble vitamins and absorb similarly to other dietary lipids. Because the molecular mechanism of retinol, α-tocopherol, and phylloquinone absorption is still unknown, this work aims to investigate the distribution of these vitamins at the water/membrane interface using molecular dynamics (MD) simulations.
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International Centre of Insect Physiology and Ecology, P.O. Box 30772 - 00100, Nairobi, Kenya.
Globally, despite the commercial and cultural importance of edible caterpillars ( and ), comprehensive information on their dietary and therapeutic benefits has not been fully explored. The study was aimed at evaluating the nutritional composition and bioactive compounds profile of two important edible caterpillars ( and ) in Africa. Our results demonstrated that and are capable of amplifying host plant protein (17 %) by 4.
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Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.
Background: The link between antioxidants and metabolic dysfunction-associated steatotic liver disease (MASLD) is a topic of considerable discussion in the field of observational studies, with the exact causal connections still being unclear.
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Appl Biochem Biotechnol
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ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
Recessive shrunken2 (sh2)-based sweet corn is preferred worldwide as it possesses higher sugar and extended shelf life. However, traditional sh2-based sweet corn is poor in vitamin A and vitamin E. Here, parental lines of two sh2-based sweet corn hybrids, viz.
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Granja Monte Encinar, El Barraco, 05110 Ávila, Spain.
(1) Background: Given the problems currently posed by the use of soybean meal in poultry feeding, its replacement with black soldier fly (BSF) meal may be a suitable strategy. Therefore, this study evaluated the effect of this dietary replacement on laying performance, egg quality, and yolk nutritional composition in free-range reared hens. (2) Methods: Three diets were formulated: a control diet with 210 g/kg of soybean meal, a diet with 105 g/kg of soybean meal and 80 g/kg of BSF meal, and a diet with 160 g/kg of BSF meal.
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