Abstract:
:The interaction of magnesium ions with biomolecular species is fundamental to the regulation of many biological processes. A mathematical technique to investigate such interactions is described. The concept of a pseudo-formation curve is discussed and the relevance and applicability of such constructions to the study of solute-solute interactions is outlined. Analysis of curves based on the published variation of chemical shift data of various nuclei of adrenaline and dichloroisoprenaline in aqueous solution, in the presence of increasing concentration of the complex Mg-ATP, is described. Unambiguous indentification of specific interactions and the stability of the species produced is shown to be feasible. Some variation of the values of formation constants deriving from different nuclei reflects the significance of molecular environmental factors on the parameters used.
journal_name
Magnes Resjournal_title
Magnesium researchauthors
Hughes MS,Crow DR,Birch NJsubject
Has Abstractpub_date
1992-06-01 00:00:00pages
89-96issue
2eissn
0953-1424issn
1952-4021journal_volume
5pub_type
杂志文章abstract::Traumatic brain injury (TBI) confers a major burden to Western society and effective treatments are urgently required to improve the long-term deficits that inflict TBI survivors. Depletion of intracellular Mg(2+) is a well-known phenomenon occurring after TBI and is associated with poor neurological outcome. However,...
journal_title:Magnesium research
pub_type: 杂志文章,评审
doi:10.1684/mrh.2009.0189
更新日期:2009-12-01 00:00:00
abstract::Idiopathic mitral valve prolapse (IMVP) is a widespread disease. IMVP may be latent, but most patients describe a great variety of symptoms. The clinical pictures of IMVP and of latent tetany are superimposed with regard to Mg deficit. IMVP appears as a late complication of latent tetany due to magnesium deficit (LTMD...
journal_title:Magnesium research
pub_type: 杂志文章,评审
doi:
更新日期:1988-12-01 00:00:00
abstract::Competitive divalent (magnesium and calcium) or monovalent (potassium, lithium and sodium) ion exchange and its influence on a membrane potential formation was studied at biological ligands (BL) such as adenosine triphosphate (ATP), asparagine (Asn) and glutamine (Gln) sites. The sites are dispersed electrochemically ...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:2009-03-01 00:00:00
abstract::We measured free intralymphocyte magnesium (Mgi) in 10 hypertensive subjects (HS) before and after treatment with atenolol (A) and in 16 normotensive control subjects (NC). We also carried out in vitro studies on human lymphocytes to test the effect of catecholamines and beta-antagonists on Mgi. Mgi in HS was not stat...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:1999-03-01 00:00:00
abstract::Ageing is associated with a general decline in physiological functions. Amongst the different aspects of body deterioration, cognitive impairments, and particularly defects in learning and memory, represent one of the most frequent features in the elderly. However, a great variability exists among aged subjects. Clini...
journal_title:Magnesium research
pub_type: 杂志文章,评审
doi:
更新日期:2006-09-01 00:00:00
abstract::The current study assessed the neuroprotective efficacy of magnesium using a FAST-Mag trial treatment protocol alone, and in combination with mild hypothermia, in Sprague Dawley rats subjected to permanent, middle cerebral artery occlusion (MCAO). Treatment with magnesium (MgSO4.7H2O) consisted of an intravenous loadi...
journal_title:Magnesium research
pub_type: 杂志文章
doi:10.1684/mrh.2013.0340
更新日期:2013-04-01 00:00:00
abstract::Adequate magnesium (Mg) levels play a vital role in membrane excitability, cell contractility and metabolism, being a key nutrient for sustaining appropriate muscular contraction and performance levels in athletes. Phase angle (PhA), assessed by bioimpedance analysis (BIA), has been reported to be positively associate...
journal_title:Magnesium research
pub_type: 杂志文章
doi:10.1684/mrh.2015.0389
更新日期:2015-07-01 00:00:00
abstract::Catechol-O-methyltransferase (COMT) is a magnesium-dependent, catecholamine-metabolizing enzyme, whose impaired activity has been positively associated with cardiovascular diseases, particularly hypertension. Consumption of some natural mineral-rich waters has been shown to exert protective effects on cardiovascular r...
journal_title:Magnesium research
pub_type: 杂志文章
doi:10.1684/mrh.2014.0369
更新日期:2014-07-01 00:00:00
abstract::Complex fermentable carbohydrates, such as inulin-type fructans have been shown to improve Mg2+ absorption in the hindgut and body stores. The mechanisms for this are not well understood. The newly identified transient receptor potential melastatin 6 and 7 (TRPM6 and TRPM7) channels have been shown to function in acti...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:2008-12-01 00:00:00
abstract::In this study, the effects of oral magnesium supplementation were evaluated on plasma, erythrocyte, and urinary cation levels. The study was carried out with an open, cross-over and randomized design. Healthy subjects received two sachets per day of magnesium (366 mg Mg2+/d) for two 28 d cycles, separated by a 3-week ...
journal_title:Magnesium research
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1993-06-01 00:00:00
abstract::We studied the voltage dependence of the inhibitory effects of the Ca2+ antagonist Mg2+, compared to nifedipine, on the transsarcolemmal Ca2+ uptake into primary monolayers of smooth muscle cells obtained from pig coronary arteries. The cellular Ca incorporation was analyzed by liquid scintillation. Depolarization was...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:1997-06-01 00:00:00
abstract::The complex pressure wave (blast) generated by some explosions causes pulmonary pathological changes which resemble the histological findings of the adult respiratory distress syndrome (ARDS). The development of indirect neurotrauma following experimental pulmonary blast injury has been shown previously. The purpose o...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:1995-09-01 00:00:00
abstract::46 children, aged 2-6 years, with decreased magnesium concentrations in hair, were studied. Magnesium supplementation consisted of Asmag preparation for 3 months and multivitamin Multi-tabs preparation (containing magnesium, but without calcium) for the following 4 months. Control studies were performed again after 7 ...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:2001-03-01 00:00:00
abstract::Hypomagnesaemia has been reported among patients undergoing hemodialysis (HD). Recently, a possible correlation between serum magnesium (Mg) and C-reactive protein (CRP) has been stressed. This correlation has been attributed to cytokine production and oxidative stress processes. In this study we aimed to determine th...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:2008-09-01 00:00:00
abstract::Experimental studies of anxiety in animal models, and evidence of efficacious outcomes of magnesium (Mg) supplementation in the treatment of acute clinical affective disorders, has increased interest in Mg as a potential novel treatment for symptoms of mild/moderate subjective anxiety. This short review examines the e...
journal_title:Magnesium research
pub_type: 杂志文章,评审
doi:10.1684/mrh.2016.0411
更新日期:2016-03-01 00:00:00
abstract::Photosynthetic capacity of chloroplasts is regulated by stromal pH. The pH of the stroma must be maintained higher than external pH during illumination in order to optimize photosynthetic carbon reduction cycle activity. Stromal pH is affected by K+/H+ counterexchange across the chloroplast envelope. Magnesium ion ext...
journal_title:Magnesium research
pub_type: 杂志文章,评审
doi:
更新日期:1993-09-01 00:00:00
abstract::Sodium bicarbonate is used to treat metabolic acidosis, or to induce metabolic alkalosis in sick neonates. The aim of this study was to quantify the decrease in serum concentration of ionized magnesium ([Mg2+]) when sodium bicarbonate is added to neonatal serum in vitro. Sodium bicarbonate was added to 30 cord serum s...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:2004-06-01 00:00:00
abstract::Increased white blood cell counts or leukocytosis have been observed primarily in young rats fed diets extremely low in Mg (< 60 ppm) and high in phosphorus (0.5 % P). We investigated the influence that acute and moderate Mg deficiencies have on blood leukocytes at high and low dietary phosphorus levels. For four week...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:2006-06-01 00:00:00
abstract::The consequences of broad-scale alterations in magnesium (Mg2+) levels on learning and memory are poorly understood. We have recently demonstrated that adult male mice maintained on an Mg2+-deficient diet exhibit reduced conditional freezing behavior. The purpose of the present study was to determine if the detrimenta...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:2007-03-01 00:00:00
abstract::A tight coupling between ionic currents, intracellular Ca2+ homeostasis, cytosolic [ADP] and deltaG of ATP hydrolysis underlies the regulation of cardiac cell function. As more experimental detail on the biochemistry and biophysics of these complex processes and their interactions accumulates, the intuitive interpreta...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:2008-03-01 00:00:00
abstract::The use of fluorescent indicators to quantify intracellular magnesium ([Mg(2+)]i) requires accurate determination of the dissociation constant (K(D)). Ideally, the K(D) should be determined intracellularly; however, in practice this is difficult to achieve. An alternative method is to measure the K(D) in solutions whi...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:1995-12-01 00:00:00
abstract::There is an important functional link between magnesium and calciotropic hormones. PTH stimulates magnesium reabsorption in the renal tubule, absorption in the gut and release of the ion from bone. Magnesium on the other hand is essential for the normal function of the parathyroid glands, metabolism of vitamin D and a...
journal_title:Magnesium research
pub_type: 杂志文章,评审
doi:
更新日期:1995-03-01 00:00:00
abstract::Electrolyte abnormalities are a frequent and potentially hazardous complication in the treatment of patients with congestive heart failure. Medical treatment with diuretics and/or digitalis, as well as neurohumoral activation most likely initiated by the compromised cardiac function, contributes to this alteration. Th...
journal_title:Magnesium research
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1992-03-01 00:00:00
abstract::In therapy it is known that the combination of vitamin B6 and magnesium is beneficial in the treatment of several forms of primary magnesium deficiency. The purpose of the present study was to investigate the effect of complex magnesium supplementation containing mineral bishofit solution (MgCl2 x 6H2O) and pyridoxine...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:2002-12-01 00:00:00
abstract::The relation between histamine metabolism and an appearance of pinnal hyperaemia during magnesium (Mg) deficiency, and the effects of some factors on these were studied in 3-week-old Wistar rats. On a Mg-deficient diet (Mg 0.001%), the histamine concentrations in plasma and urine increased after 4-5 d, and reached a m...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:1988-12-01 00:00:00
abstract:BACKGROUND:Changes in plasma matrix metalloproteinase 9 (MMP-9) concentrations and parallel changes in brain magnesium homeostasis have not been examined in cardiac surgery patients. The purpose of the present study was to analyse these relationships in patients undergoing coronary artery bypass surgery (CABG) with ext...
journal_title:Magnesium research
pub_type: 杂志文章
doi:10.1684/mrh.2010.0219
更新日期:2010-12-01 00:00:00
abstract::Mg2+ is known to influence conductance and gating properties of a multitude of ion channels and is thus able to modulate synaptic transmission. Therefore, a tight regulation of the intracellular free Mg2+ concentration ([Mg2+]i) in neurones and glial cells is crucial for maintaining the functions of central nervous sy...
journal_title:Magnesium research
pub_type: 杂志文章,评审
doi:
更新日期:2000-06-01 00:00:00
abstract::Intracellular total Mg2+ and free Mg2+ are compartmentalized between cell organelles and within the cytosol. Different values of [Mg2+]i in the cytosol of the same cell type were measured by various investigators. A main reason for the differences is the uncertainty of the dissociation constants used for the Mg furapt...
journal_title:Magnesium research
pub_type: 杂志文章,评审
doi:
更新日期:2006-12-01 00:00:00
abstract:UNLABELLED:Magnesium (Mg) plays an important role in lymphocyte function. Low blood concentration of Mg may result in intralymphocyte imbalance and in turn may be associated with intensified apoptosis of peripheral blood lymphocytes. Due to its multistage character; extracorporeal circulation (ECC) may augment Mg disor...
journal_title:Magnesium research
pub_type: 杂志文章
doi:
更新日期:2005-12-01 00:00:00
abstract::We evaluated the effects of oral magnesium supplementation on plasma lipid concentrations in patients with non-insulin-dependent diabetes mellitus. Twenty-six persons with non-insulin-dependent diabetes mellitus received 4.5 g magnesium pidolate/d for one month, and 17 persons received placebo. Before and at the end o...
journal_title:Magnesium research
pub_type: 临床试验,杂志文章
doi:
更新日期:1994-03-01 00:00:00