Magnesium Deficiency Modulates the Insulin Signaling Pathway in Liver but Not Muscle of Rats
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Magnesium deficiency (plants)
Magnesium deficiency (plants)
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There are three groups of patients with abnormalities of magnesium homoeostasis. The first one include patients with magnesium deficiency (low total body magnesium content) and a resultant hypomagnesaemia (low serum magnesium concentration). Patients with hypomagnesaemia (serum magnesium concentration <0.75 mmol/L) in the absence of magnesium deficiency (i.e., a normal total body magnesium content) consist the second group. The third group include patients with magnesium deficiency (low total body magnesium content) but no evidence of hypomagnesaemia (i.e., a normal serum magnesium concentration). Magnesium deficiency can be caused by decreased magnesium intake from the diet, decreased magnesium absorption, or increased renal magnesium excretion (renal magnesium wasting). The narrative review examines the causes, clinical and laboratory signs of magnesium deficiency in the body, and the effect of magnesium supplementation on health indices. Groups of people who are more likely to suffer from magnesium deficiency are outlined. Emphasis is placed on the use of questionnaires to identify individuals with possible magnesium deficiency. The changes on the electrocardiograms that are characteristic of the initial magnesium deficiency and that occur in case of its increase are given. The effect of additional intake of magnesium salts on blood pressure changes in individuals with and without baseline hypertension is discussed in detail. Factors that make it difficult to assess the relationship between magnesium intake and abnormalities in lipid and carbohydrate metabolism are listed. An association between increased dietary magnesium intake and reduced risk of certain cardiovascular diseases, diabetes mellitus, and overall mortality has been demonstrated. Keywords: hypomagnesaemia, blood pressure, diabetes mellitus.
Magnesium deficiency (plants)
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Magnesium deficiency is a common clinical condition, frequently present even with normal serum magnesium (S-Mg) concentrations. We have studied retention of a low-dose (0.2 mEq/kg lean body weight), intravenously administered magnesium load in 6 hypomagnesemic patients and 18 normomagnesemic alcoholics as compared with 16 normal subjects. Both normomagnesemic and hypomagnesemic subjects retained significantly greater amounts of the administered magnesium than did the normal subjects. In patients who were restudied following parenteral magnesium repletion, retention of the magnesium load normalized. We conclude that increased retention of a magnesium load is a more sensitive index of magnesium deficiency than is the S-Mg concentration, and suggest that low-dose magnesium tolerance testing be used more frequently as a clinical tool in the evaluation of states of normomagnesemic magnesium deficiency.
Magnesium deficiency (plants)
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Magnesium deficiency (plants)
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There are three groups of patients with abnormalities of magnesium homoeostasis. The first one include patients with magnesium deficiency (low total body magnesium content) and a resultant hypomagnesaemia (low serum magnesium concentration). Patients with hypomagnesaemia (serum magnesium concentration <0.75 mmol/L) in the absence of magnesium deficiency (i.e., a normal total body magnesium content) consist the second group. The third group include patients with magnesium deficiency (low total body magnesium content) but no evidence of hypomagnesaemia (i.e., a normal serum magnesium concentration). Magnesium deficiency can be caused by decreased magnesium intake from the diet, decreased magnesium absorption, or increased renal magnesium excretion (renal magnesium wasting). The narrative review examines the causes, clinical and laboratory signs of magnesium deficiency in the body, and the effect of magnesium supplementation on health indices. Groups of people who are more likely to suffer from magnesium deficiency are outlined. Emphasis is placed on the use of questionnaires to identify individuals with possible magnesium deficiency. The changes on the electrocardiograms that are characteristic of the initial magnesium deficiency and that occur in case of its increase are given. The effect of additional intake of magnesium salts on blood pressure changes in individuals with and without baseline hypertension is discussed in detail. Factors that make it difficult to assess the relationship between magnesium intake and abnormalities in lipid and carbohydrate metabolism are listed. An association between increased dietary magnesium intake and reduced risk of certain cardiovascular diseases, diabetes mellitus, and overall mortality has been demonstrated. Keywords: children, dentoalveolar anomalies, prevalence, primary dentition, changing dentition, permanent dentition.
Magnesium deficiency (plants)
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[Objective] The aim was to supply theoretical foundation for the timely diagnosis of magnesium deficiency symptom of cultivated red-global grape and its balanced fertilization.[Method] The magnesium content was determined by atomic absorption colorimetry.The content of MDA and the activities of SOD and POD were determined with reference to Lihesheng method.[Result] When the magnesium was deficient,the contents of magnesium and chlorophyll and the activities of SOD and POD decreased significantly,the content of MDA increased significantly and the variations of indices began to be significant after 60 d since magnesium deficiency.At this time,the magnesium content in magnesium deficiency treatment decreased by 47.6% in comparison with CK,the chlorophyll content in CK reached its maximum,the contents of MDA in magnesium deficiency and low magnesium treatments and CK began to increase significantly,the activities of SOD reached their maximum in low magnesium treatment and CK and the activities of POD in magnesium deficiency and low magnesium treatments began to decrease.The activity of POD in low magnesium treatment for 120 d decreased by 30.5% in comparison with CK.The chlorophyll contents in magnesium deficiency and low magnesium treatments for 90 d decreased by 65.2% and 67.7% resp.in comparison with CK.[Conclusion] In magnesium deficiency and low magnesium treatments,the variations of indices were mainly centralized in the early growth stage.So,the attention should be attached to applying magnesium fertilizer in the early growth stage of grape.
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Abstract Soil and leaf analyses were made in connection with six field experiments involving orange trees fertilized with potassium and/or magnesium. Experimental plots were located in 6 orchards in 4 southern California counties. The concentration of magnesium in spring‐cycle leaves was correlated with the degree of leaf symptoms characteristic of magnesium deficiency. Addition of magnesium fertilizer resulted in a marked increase in leaf magnesium and a disappearance of deficiency symptoms. Potassium fertilization accentuated magnesium deficiency. Deficiency symptoms were associated with leaf magnesium concentrations of 0.20% or less. The ratio of exchangeable K/Mg in the soil (particularly the 18‐ to 30‐inch depth) was highly correlated with the percent magnesium in the leaves.
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The growth of Chlorella in the magnesium deficient medium was postulated. It was found that magnesium deficiency has greater influence upon multiplication of cells than upon synthesis of cell materials. And the size of cells becomes larger in the magnesium deficient medium. Chlorophyll formation is completely suppressed by the deficiency. But it seems that growth is affected by magnesium deficiency itself rather than by chlorophyll deficiency caused by magnesium deficiency.
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Magnesium deficiency (plants)
Enteral administration
Dietary Reference Intake
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