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1. Association between erythrocyte concentrations of magnesium and zinc in high-performance handball players after dietary magnesium supplementation.

Author

Molina-López J, Molina JM, Chirosa LJ, Florea D, Sáez L, Millán E, and Planells E

Subjects
Anthropometry, Heart Rate physiology, Humans, Male, Nutritional Status, Physical Exertion, Reference Values, Young Adult, Athletes, Dietary Supplements, Erythrocytes metabolism, Magnesium administration & dosage, Magnesium blood, Zinc blood
Abstract

Currently, research on athletes focuses on optimizing the nutritional status in order to adjust their minerals requirements. This study was designed to evaluate baseline nutritional status and the effect of a nutritional intervention based on magnesium (Mg) supplementation, on plasma and erythrocyte concentrations of Mg and zinc (Zn), and their relationship with training load. We analyzed training load by recording the training volume, intensity and rating of perceived exertion (RPE) during a four-month period, in 14 high-performance handball players. Intensity was studied in different levels of residual heart rate (RHR). We analyzed nutrient intake and plasma and erythrocyte concentrations of Mg and Zn by FAAS. All biomarkers were measured at baseline, after two months of dietary supplementation with Mg, and after two months without supplementation. RPE was associated with training volume at different intensities of RHR. Mg supplementation significantly increased plasma Mg levels during the supplemented period and preserved for subsequent changes in the non-supplemented period. Erythrocyte concentrations of Mg and Zn show associations between baseline and Mg supplementation. Mg levels were associated with training volume at different intensities after supplementation. In conclusion, our findings in high-performance handball players show that during competition, there is a relationship between erythrocyte Zn and Mg levels, regardless of Mg supplementation or Zn intake. Mg dietary supplementation tended to preserve changes in mineral levels during training and competition.

Published
2012
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2. [We and zinc].

Author

Florea DI, Molina López J, Millán E, Sáez L, Pérez de la Cruz A, Planells P, Salmerón JI, and Planells E

Subjects
Adult, Aging physiology, Female, Humans, Micronutrients deficiency, Nutritional Requirements, Nutritional Status, Pregnancy, Zinc blood, Zinc deficiency, Zinc physiology
Abstract

Nutrition is the basis of human physiological processes. Inadequate nutrition can lead to dysfunction in the metabolic chain links. One of the most important micronutrients is zinc, as evidenced by its wide range of carriers in the body. Zinc intake has a large margin in the current world population, may be 7 mg/d in the UK, reaching 15 mg/d in the U.S., although of course, the RDA's are set according to age, sex , physiological status (pregnancy, lactation, etc..), or disease. It is known that zinc is essential for the structure and function as well as DNA and enzymes, coenzymes, hormones and so on. Life is short, zinc, since the most rapidly absorbed and is transferred to tanks where it is stored, so the amount available zinc in the blood cannot be the amount "real". In this work we have done a mini-review of the passage of zinc by the body trying since their intake to their tour of the blood in both healthy and sick people.

Published
2012
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3. We and zinc

Author

Florea, D I, Molina López, J, Millán, E, Sáez, L, Pérez de la Cruz, A, Planells, P, Salmerón, J I, Planells, E, [Florea,DI, Molina López,J, Millán,E, Sáez,L, Planells,E] Departamento de Fisiología. Insituto de Nutrición y Tecnología de los Alimentos. Centro de Investigaciones Biomédicas. Universidad de Granada. [Pérez de la Cruz,A] Unidad de Nutrición y Dietética. Hospital Virgen de las Nieves. Granada. España. [Planells,P, and Salmerón,JI] Universidad Complutense de Madrid, Madrid. España.

Subjects
Chemicals and Drugs::Inorganic Chemicals::Elements::Metals, Heavy::Zinc [Medical Subject Headings], Humanos, Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings], Zinc, Biomarcadores, Check Tags::Female [Medical Subject Headings], Nutrición, Phenomena and Processes::Physiological Phenomena::Physiological Processes::Growth and Development::Aging [Medical Subject Headings], Cinc, Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Physiological Effects of Drugs::Growth Substances::Micronutrients [Medical Subject Headings], Named Groups::Persons::Age Groups::Adult [Medical Subject Headings], Phenomena and Processes::Physiological Phenomena::Nutritional Physiological Phenomena::Nutritional Requirements [Medical Subject Headings], Phenomena and Processes::Physiological Phenomena::Nutritional Physiological Phenomena::Nutritional Status [Medical Subject Headings], Human, Biomarkers, Phenomena and Processes::Reproductive and Urinary Physiological Phenomena::Reproductive Physiological Phenomena::Reproductive Physiological Processes::Reproduction::Pregnancy [Medical Subject Headings], Nutrition
Abstract

English Abstract; Journal Article; Review; Nutrition is the basis of human physiological processes. Inadequate nutrition can lead to dysfunction in the metabolic chain links. One of the most important micronutrients is zinc, as evidenced by its wide range of carriers in the body. Zinc intake has a large margin in the current world population, may be 7 mg/d in the UK, reaching 15 mg/d in the U.S., although of course, the RDA's are set according to age, sex , physiological status (pregnancy, lactation, etc..), or disease. It is known that zinc is essential for the structure and function as well as DNA and enzymes, coenzymes, hormones and so on. Life is short, zinc, since the most rapidly absorbed and is transferred to tanks where it is stored, so the amount available zinc in the blood cannot be the amount "real". In this work we have done a mini-review of the passage of zinc by the body trying since their intake to their tour of the blood in both healthy and sick people. Yes La Nutrición es la base de los procesos fisiológicos humanos. Una nutrición inadecuada puede inducir a la disfunción en eslabones de la cadena metabólica. Todos los nutrientes esenciales son imprescindibles y el déficit o exceso de cualquiera de ellos conlleva a efectos adversos en la salud. El cinc es un micronutriente extensamente demandado en el organismo, como lo demuestra la amplia diversidad de funciones biológicas que presenta. La ingesta de cinc presenta un gran margen en la población mundial actual, pudiendo ser de 7 mg/d en Reino Unido y llegando a 15 mg/d en EEUU, aunque por supuesto, las RDAs se fijan en función de la edad, sexo, situación fisiológica (embarazo, lactancia, etc.), o enfermedad. Se conoce que el cinc es fundamental para la estructura y funcionamiento del DNA y así como de enzimas, coenzimas, hormonas, etc. La vida del cinc es corta, dado que la mayor cantidad se absorbe y rápidamente es transferida a depósitos, donde se almacena, por lo tanto la cantidad se cinc disponible en sangre puede no ser la cantidad “real”. En el presente trabajo hemos realizado una breve revisión del paso del cinc por nuestro organismo, tratando desde su ingesta hasta su recorrido por la sangre tanto en personas sanas como enfermas.

Published
2012

4. Nosotros y el cinc

Author

Florea, D. I., Molina López, J., Millán, E., Sáez, L., Pérez de la Cruz, A., Planells, P., Salmerón, J. I., and Planells, E.

Subjects
Zinc, Biomarcadores, Nutrición, Cinc, Biomarkers, Humanos, Nutrition, Human
Abstract

La Nutrición es la base de los procesos fisiológicos humanos. Una nutrición inadecuada puede inducir a la disfunción en eslabones de la cadena metabólica. Todos los nutrientes esenciales son imprescindibles y el déficit o exceso de cualquiera de ellos conlleva a efectos adversos en la salud. El cinc es un micronutriente extensamente demandado en el organismo, como lo demuestra la amplia diversidad de funciones biológicas que presenta. La ingesta de cinc presenta un gran margen en la población mundial actual, pudiendo ser de 7 mg/d en Reino Unido y llegando a 15 mg/d en EEUU, aunque por supuesto, las RDAs se fijan en función de la edad, sexo, situación fisiológica (embarazo, lactancia, etc.), o enfermedad. Se conoce que el cinc es fundamental para la estructura y funcionamiento del DNA y así como de enzimas, coenzimas, hormonas, etc. La vida del cinc es corta, dado que la mayor cantidad se absorbe y rápidamente es transferida a depósitos, donde se almacena, por lo tanto la cantidad se cinc disponible en sangre puede no ser la cantidad "real". En el presente trabajo hemos realizado una breve revisión del paso del cinc por nuestro organismo, tratando desde su ingesta hasta su recorrido por la sangre tanto en personas sanas como enfermas. Nutrition is the basis of human physiological processes. Inadequate nutrition can lead to dysfunction in the metabolic chain links. One of the most important micronutrients is zinc, as evidenced by its wide range of carriers in the body. Zinc intake has a large margin in the current world population, may be 7 mg/d in the UK, reaching 15 mg/d in the U.S., although of course, the RDA's are set according to age, sex , physiological status (pregnancy, lactation, etc..), or disease. It is known that zinc is essential for the structure and function as well as DNA and enzymes, coenzymes, hormones and so on. Life is short, zinc, since the most rapidly absorbed and is transferred to tanks where it is stored, so the amount available zinc in the blood cannot be the amount "real". In this work we have done a mini-review of the passage of zinc by the body trying since their intake to their tour of the blood in both healthy and sick people.

Published
2012

5. Structure and activity of Cu/ZnO catalysts co-modified with aluminium and gallium for methanol synthesis.

Author

Guil-López, R., Mota, N., Llorente, J., Millán, E., Pawelec, B., García, R., Fierro, J.L.G., and Navarro, R.M.

Subjects
*ALUMINUM catalysts, *GALLIUM, *COPPER surfaces, *METHANOL, *ZINC oxide synthesis, *CATALYST synthesis, *ISOBUTANOL
Abstract

• Co-modification with Al and Ga improves the activity of Cu/ZnO. • Activity of Cu/ZnO depends the Al/Ga ratio. • Better intrinsic activity with co-loading with equal amount of Al and Ga. This contribution describes the modification in the structure and activity of Cu/ZnO catalyst in the methanol synthesis reaction induced by the co-modification with a low amount of Al and Ga (Al + Ga = 3% atom). To elucidate the effect of the co-modification, the catalysts were characterized by means of variety of techniques (XRD, N 2 physisorption, FTIR, TGA, TEM, TPR and N 2 O chemisorption) and tested in the methanol synthesis reaction carried out in a flow reactor at 250 °C and total pressure of 3 MPa using syngas. The combined characterization and activity tests demonstrated that the co-doping with Al and Ga affects the structure and activity of Cu/ZnO catalysts in a different manner depending on the Al/Ga ratio used. The best catalyst co-loaded with Ga and Al in equal amount shows an improvement in the activity for methanol synthesis respect to the activity obtained on catalysts individually loaded with Al and Ga. The difference in the activity of the samples co-loaded with Al and Ga normalized by N 2 O chemisorption point to a different participation of the copper surfaces in combination with the defect sites of ZnO depending on the Al and Ga loading. [ABSTRACT FROM AUTHOR]

Published
2020
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