Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 2.034
Filtrar
Más filtros

Medicinas Complementárias
Intervalo de año de publicación
1.
Virol J ; 21(1): 91, 2024 04 23.
Artículo en Inglés | MEDLINE | ID: mdl-38654355

RESUMEN

BACKGROUND: This study sought to examine the impact of magnesium supplementation on clinical outcomes and biochemical factors among hospitalized patients with COVID-19. METHODS: This double-blind, randomized clinical trial was conducted at Razi Hospital, Ahvaz, Iran, between September 2021 and March 2022. Participants aged 18-70 years with moderate disease severity were enrolled. Magnesium supplementation (300 mg daily) was administered to the intervention group, while the control group received a placebo. Clinical outcomes, including the need for oxygen therapy, oxygen saturation, respiratory rate, fever, hs-CRP and TNF-α levels, as well as quality of life and mental health, were assessed. Blood samples were collected to measure biochemical variables. RESULTS: The main result was the count of individuals requiring oxygen therapy. Additional outcomes comprised of oxygen saturation, respiratory rate, fever, hs-CRP and TNF-α levels, as well as quality of life and mental health. Out of 64 participants, 60 completed the study. The results showed that magnesium supplementation significantly reduced the number of patients requiring oxygen therapy (9 vs. 14; P < 0.001). Moreover, the magnesium group demonstrated improved oxygen saturation compared to the control group (4.55 ± 2.35 vs. 1.8 ± 1.67; P < 0.001). Furthermore, we observed a noteworthy enhancement in the quality of life and depression score in the magnesium group. No significant differences were observed in respiratory rate, fever, hs-CRP, and TNF-α levels (P > 0.05). CONCLUSION: The findings suggest that magnesium supplementation may have beneficial effects on clinical outcomes and arterial oxygen saturation in COVID-19 patients. More investigation is necessary to delve into its potential mechanisms and long-term effects on patient outcomes. TRIAL REGISTRATION: This study is registered on Iranian Registry of Clinical Trials (IRCT) under identifier IRCT20210413050957N1. (The registration date: May 1, 2021).


Asunto(s)
COVID-19 , Suplementos Dietéticos , Magnesio , Calidad de Vida , Humanos , Persona de Mediana Edad , Masculino , Femenino , Adulto , Magnesio/sangre , Magnesio/administración & dosificación , COVID-19/sangre , Método Doble Ciego , Irán , Anciano , Adulto Joven , SARS-CoV-2 , Adolescente , Tratamiento Farmacológico de COVID-19 , Resultado del Tratamiento , Proteína C-Reactiva/análisis , Factor de Necrosis Tumoral alfa/sangre
2.
Am J Kidney Dis ; 83(6): 803-815, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38372687

RESUMEN

Magnesium is ubiquitous in nature. It sits at the origin of the food chain, occupying the center of chlorophyl in plants. In humans, magnesium is critical to diverse molecular and catalytic processes, including energy transfer and maintenance of the genome. Despite its abundance, hypomagnesemia is common and often goes undiagnosed. This is in spite of epidemiologic data linking low magnesium with chronic diseases including diabetes mellitus. Clinically significant hypermagnesemia is encountered less frequently, but the presentation may be dramatic. Advances in molecular biology and the elucidation of the genetic causes of magnesium disorders have enhanced our understanding of their pathophysiology. Treatment approaches are also changing. The repurposing of newer medications, such as sodium/glucose cotransporter 2 inhibitors, offers new therapeutic options. In this review we integrate knowledge in this rapidly evolving field to provide clinicians and trainees with a resource for approaching common clinical scenarios involving magnesium disorders.


Asunto(s)
Deficiencia de Magnesio , Magnesio , Humanos , Magnesio/sangre , Inhibidores del Cotransportador de Sodio-Glucosa 2/uso terapéutico
3.
Alcohol Alcohol ; 58(3): 329-335, 2023 May 09.
Artículo en Inglés | MEDLINE | ID: mdl-37012631

RESUMEN

OBJECTIVE: Alcohol withdrawal syndrome (AWS) is a frequent and potentially life-threatening condition experienced in alcohol use disorder. Since hypomagnesemia is involved in AWS's severity, we conducted a multicenter double-blind randomized placebo-controlled trial to examine the efficacy of oral magnesium supplementation as an adjuvant therapy of AWS. MATERIAL AND METHODS: Inpatients were recruited in six different centers if they had a baseline score higher than eight on the Revised Clinical Institute Withdrawal Assessment for Alcohol (CIWA-Ar). The experimental treatment was magnesium lactate dehydrate, administrated three times per day providing a total of 426.6 mg per day and up to 15 days. The primary endpoint was the significant between-group difference of the CIWA-Ar total score change from baseline to 3 days later. The treatment group and baseline score were introduced as covariables in an analysis of covariance. RESULTS: A total of 98 inpatients were included {71.4% of men; mean age of 49.1 years [standard deviation (SD): 10.3]}. In the intention-to-treat population, the mean reduction of the CIWA-Ar score in the experimental group between baseline and 3 days later was 10.1 (SD: 5.2), whereas it was 9.2 (SD: 3.9) in the control group. The absolute difference of the adjusted mean in the experimental group compared with the control group was -0.69 (SD: 0.72), which did not correspond to a significant between-group difference (P = 0.34). Per-protocol analysis and sensitivity analyses also supported this result. Supplementary analyses found no significant difference regarding benzodiazepine consumption, magnesium blood concentration, and satisfaction to care. CONCLUSIONS: The present study does not support the rationale of systematic oral magnesium supplementation in patients with AWS.


Asunto(s)
Alcoholismo , Magnesio , Síndrome de Abstinencia a Sustancias , Magnesio/administración & dosificación , Magnesio/efectos adversos , Magnesio/sangre , Magnesio/uso terapéutico , Síndrome de Abstinencia a Sustancias/complicaciones , Síndrome de Abstinencia a Sustancias/tratamiento farmacológico , Alcoholismo/complicaciones , Alcoholismo/tratamiento farmacológico , Humanos , Masculino , Femenino , Administración Oral , Método Doble Ciego , Benzodiazepinas/uso terapéutico , Persona de Mediana Edad , Diarrea/inducido químicamente
4.
Acta Gastroenterol Belg ; 85(4): 565-571, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36566365

RESUMEN

Background: Proton pump inhibitors (PPIs) have been suggested to lead to bone resorption, while the effects of PPIs on the bone mineral metabolism in children has received only limited attention in literature to date. The present study investigates whether lansoprazole alters bone turnover markers in adolescents with gastroesophageal reflux disease (GERD). Patients and methods: Included in the study were adolescents aged 16-18 with GERD and a healthy volunteers group. The GERD patient group was treated with lansoprazole 30 mg once daily for eight weeks. The serum calcium, phosphorus, magnesium, alkaline phosphatase (ALP), parathormone (PTH), 25 (OH) vitamin D, osteocalcin and urinary calcium, creatinine, deoxypyridinoline (DPD), collagen type-1 crosslinked C-telopeptide (CTX) and collagen type-1 crosslinked N-telopeptide (NTX) of both groups were studied before and after the end of the treatment. Results: A comparison of the 30 patients with GERD and the 30 volunteers revealed no significant difference in the serum calcium, phosphorus, magnesium, ALP, urinary calcium/creatinine ratio, 25 (OH) vitamin D and PTH levels measured before and after the lansoprazole treatment, while the osteocalcin, DPD, CTX and NTX values were found to be higher after treatment when compared to those at pre- treatment. Conclusions: The results of this study reveal that eight weeks of treatment with 30 mg lansoprazole daily increased the bone turnover markers of CTX, NTX, DPD and osteocalcin in adolescents aged 16-18.


Asunto(s)
Remodelación Ósea , Resorción Ósea , Reflujo Gastroesofágico , Lansoprazol , Inhibidores de la Bomba de Protones , Adolescente , Humanos , Fosfatasa Alcalina/sangre , Biomarcadores/sangre , Remodelación Ósea/efectos de los fármacos , Resorción Ósea/inducido químicamente , Resorción Ósea/diagnóstico , Calcio/sangre , Creatinina/sangre , Reflujo Gastroesofágico/tratamiento farmacológico , Lansoprazol/efectos adversos , Lansoprazol/uso terapéutico , Magnesio/sangre , Osteocalcina/sangre , Hormona Paratiroidea/sangre , Péptidos/sangre , Fósforo/sangre , Inhibidores de la Bomba de Protones/efectos adversos , Inhibidores de la Bomba de Protones/uso terapéutico , Vitamina D/sangre
5.
Mol Med Rep ; 25(4)2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-35169865

RESUMEN

There is an increasing incidence of destructive bone disease caused by osteoclast proliferation. This is characterized by reduced bone mass and imbalance of bone homeostasis. Icariin (ICA), a flavonoid compound isolated from Epimedium, has anti­osteoporosis activity and inhibits the formation of osteoclasts and bone resorption. The purpose of the present study was to investigate the protective effect of ICA on osteoclastic differentiation induced by thioacetamide (TAA) and its possible mechanism in Sprague Dawley (SD) rats. In the present study, SD rats were intraperitoneally injected with TAA (300 mg/kg) for the bone loss model, treated with ICA (600 mg/kg, intragastric gavage) in the ICA group and TAA+ICA group for treatment of bone loss for 6 weeks. Indexes associated with bone metabolism, such as alkaline phosphatase, N­terminal telopeptide of type­I collagen (NTX­I), calcium (Ca), phosphorus (P) and magnesium (Mg) in the serum, were detected. Osteoclast differentiation of femoral tissues was detected by hematoxylin and eosin and tartrate­resistant acid phosphatase staining. The femoral bone mass was evaluated using a three­point bending test and micro computed tomography. Western blotting was used to detect the expression levels of osteoclast­related proteins in each group. In the rats treated with TAA, the serum concentrations of Ca, P and Mg were decreased, the serum concentration of NTX­I was increased, osteoclast differentiation of the femur was increased, femur bone stress and bone mass were decreased and the bone loss and osteoclast formation were reduced after ICA treatment. In addition, ICA inhibited the protein expression of receptor activator of nuclear factor κ­Β ligand (RANKL), receptor activator of nuclear factor κ­B (RANK), p38, ERK, c­Fos and nuclear factor of activated T cells 1 (NFATc1) in the femur of rats treated with TAA. The results suggested that ICA may inhibit osteoclast differentiation by downregulating the RANKL­p38/ERK­NFAT signaling pathway and prevent TAA­induced bone loss. The results are helpful to understand the mechanism of osteoclast differentiation induced by TAA, as well as the antiresorptive activity and molecular mechanism of ICA, and to provide new ideas for the treatment of osteolytic diseases.


Asunto(s)
Resorción Ósea/tratamiento farmacológico , Resorción Ósea/metabolismo , Flavonoides/farmacología , Sustancias Protectoras/farmacología , Ligando RANK/metabolismo , Factores de Transcripción/metabolismo , Proteínas Quinasas p38 Activadas por Mitógenos/metabolismo , Fosfatasa Alcalina/sangre , Animales , Peso Corporal/efectos de los fármacos , Resorción Ósea/inducido químicamente , Calcio/sangre , Diferenciación Celular/efectos de los fármacos , Colágeno Tipo I/sangre , Modelos Animales de Enfermedad , Fémur/diagnóstico por imagen , Fémur/efectos de los fármacos , Fémur/metabolismo , Flavonoides/uso terapéutico , Sistema de Señalización de MAP Quinasas/efectos de los fármacos , Magnesio/sangre , Masculino , Osteoclastos/efectos de los fármacos , Péptidos/sangre , Fósforo/sangre , Sustancias Protectoras/uso terapéutico , Ratas Sprague-Dawley , Tioacetamida/toxicidad , Microtomografía por Rayos X
6.
Medicine (Baltimore) ; 101(1): e28538, 2022 Jan 07.
Artículo en Inglés | MEDLINE | ID: mdl-35029924

RESUMEN

ABSTRACT: Calcium (Ca) and magnesium (Mg), which play an important role in several cellular processes, is essential for normal development of the skeleton and maintenance of tissue homeostasis. Deficiency of these elements might delay bone fracture recovery or accelerates bone loss. We aimed to examine whether supplementation of trace element (TE) promotes fracture healing in accidentally fracturing adults by involvement of inflammatory mechanism.A short-term follow-up in clinic was performed. Totally, 117 subjects diagnosed with multiple fractures by traffic accidents were recruited in this study. Serum Ca and Mg levels were measured by inductively coupled plasma atomic emission spectrophotometry. Short-term changes such as serum C-reactive protein, interleukin (IL)-1ß, IL-6, and tumor necrosis factor alpha in normal treatment and TE supplement groups were detected by enzyme-linked immunosorbent assay. Student t test and the Spearman correlation were performed to analyze the data.Significantly negative correlations between Ca (r = 0.7032; P < .001) and Mg (r = 0.2719; P < .05) and injury severity score were observed. Serum Ca and Mg were significantly increased at Day 5, 7, and 9 following TE supplements. After treatment, serum C-reactive protein, IL-1ß, IL-6, and tumor necrosis factor alpha were significantly reduced whereas cytokine levels of the TE supplement group were found to be lower than that of the normal treatment group after Day 3.These findings suggest that Ca and Mg levels are associated with the injury severity of multiple fractures, and the supplement could reduce the inflammation, which may be beneficial for the bone recovery and disease process.


Asunto(s)
Calcio/sangre , Citocinas/sangre , Fracturas Óseas , Fracturas Múltiples , Magnesio/sangre , Accidentes de Tránsito , Adulto , Proteína C-Reactiva/análisis , Calcio/administración & dosificación , Femenino , Estudios de Seguimiento , Humanos , Puntaje de Gravedad del Traumatismo , Interleucina-6/sangre , Magnesio/administración & dosificación , Masculino , Persona de Mediana Edad , Espectrofotometría Atómica , Factor de Necrosis Tumoral alfa/sangre
7.
Nutrients ; 13(11)2021 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-34836340

RESUMEN

The prevalence of metabolic syndrome (MetS) is increasing, and patients with MetS are at an increased risk of cardiovascular disease and diabetes. There is a close link between hypomagnesemia and MetS. Administration of sodium-glucose transporter 2 (SGLT2) inhibitors has been reported to increase serum magnesium levels in patients with diabetes. We investigated the alterations in renal magnesium handling in an animal model of MetS and analyzed the effects of SGLT2 inhibitors. Adult rats were fed a fructose-rich diet to induce MetS in the first 3 months and were then treated with either dapagliflozin or magnesium sulfate-containing drinking water for another 3 months. Fructose-fed animals had increased insulin resistance, hypomagnesemia, and decreased urinary magnesium excretion. Dapagliflozin treatment improved insulin resistance by decreasing glucose and insulin levels, increased serum magnesium levels, and reduced urinary magnesium excretion. Serum vitamin D and parathyroid hormone levels were decreased in fructose-fed animals, and the levels remained low despite dapagliflozin and magnesium supplementation. In the kidney, claudin-16, TRPM6/7, and FXDY expression was increased in fructose-fed animals. Dapagliflozin increased intracellular magnesium concentration, and this effect was inhibited by TRPM6 blockade and the EGFR antagonist. We concluded that high fructose intake combined with a low-magnesium diet induced MetS and hypomagnesemia. Both dapagliflozin and magnesium sulfate supplementation improved the features of MetS and increased serum magnesium levels. Expression levels of magnesium transporters such as claudin-16, TRPM6/7, and FXYD2 were increased in fructose-fed animals and in those administered dapagliflozin and magnesium sulfate. Dapagliflozin enhances TRPM6-mediated trans-epithelial magnesium transport in renal tubule cells.


Asunto(s)
Compuestos de Bencidrilo/farmacología , Glucósidos/farmacología , Sulfato de Magnesio/farmacología , Magnesio/sangre , Síndrome Metabólico/terapia , Inhibidores del Cotransportador de Sodio-Glucosa 2/farmacología , Animales , Dieta de Carga de Carbohidratos/efectos adversos , Dieta de Carga de Carbohidratos/métodos , Suplementos Dietéticos , Modelos Animales de Enfermedad , Fructosa/administración & dosificación , Homeostasis , Resistencia a la Insulina , Riñón/metabolismo , Túbulos Renales/metabolismo , Deficiencia de Magnesio/sangre , Deficiencia de Magnesio/complicaciones , Deficiencia de Magnesio/terapia , Síndrome Metabólico/complicaciones , Síndrome Metabólico/metabolismo , Ratas , Canales Catiónicos TRPM/metabolismo
8.
Prev Vet Med ; 196: 105475, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-34481225

RESUMEN

This cross-sectional observational study aimed to identify prepartum management, environmental, and animal factors associated with clinical -lameness, metritis, mastitis- and subclinical -calcium imbalance, magnesium imbalance- diseases in pasture-based dairy cows. A total of 565 cows from 25 commercial dairy farms in southern Chile were enrolled over four months. Data on prepartum management and environmental conditions were obtained through a survey and inspections of prepartum paddocks. Cows were evaluated two times. In the first evaluation, between 30 to 3 days before calving, cows were assessed for lameness, body condition score, and blood samples were collected to measure nonesterified fatty acid (NEFA), calcium (Ca), and magnesium (Mg). In the second evaluation, between 3 to 21 DIM, cows were assessed for metritis, lameness, and blood samples were collected and analyzed for total Ca and Mg concentration. Cows were considered as having Ca imbalance if Ca < 2.0 mmol/L, and Mg imbalance if Mg < 0.65 mmol/L. Postpartum clinical mastitis was diagnosed based on the foremilk's daily condition and udder assessed by the milker at each milking during the postpartum transition period. Multivariable logistic regression models, controlling for the farm as a random effect, were built to identify prepartum factors for each postpartum disease. The odds of postpartum lameness were higher for cows that were lame during the prepartum period, had elevated prepartum NEFA concentrations, had greater parity, and for cows that were kept in paddocks with no grass cover. The odds of metritis were higher in cows with lower parity, with increased prepartum NEFA, in cows that had dystocia, and farms with predominantly Holstein breed, and that did not have calving records. The odds of clinical mastitis were higher for cows lame during the prepartum period. The odds of Ca imbalance were higher in cows with a long dry period, dystocic calving, and in farms without prepartum anionic salts supplementation. The odds of Mg imbalance were higher in cows with lower prepartum Mg concentrations, higher prepartum Ca concentration, and higher parity. Our findings indicate that farmers could benefit from refining these areas to improve their cows' health and welfare.


Asunto(s)
Enfermedades de los Bovinos/etiología , Periodo Posparto , Animales , Calcio/sangre , Bovinos , Chile , Estudios Transversales , Industria Lechera , Ácidos Grasos no Esterificados/sangre , Femenino , Magnesio/sangre , Leche , Paridad , Embarazo
9.
Nutrients ; 13(8)2021 Aug 05.
Artículo en Inglés | MEDLINE | ID: mdl-34444861

RESUMEN

So far, there is no consistent and convincing theory explaining the pathogenesis of migraines. Vascular disorders, the effect of oxidative stress on neurons, and the contribution of magnesium-calcium deficiencies in triggering cortical depression and abnormal glutaminergic neurotransmission are taken into account. However, there are no reliable publications confirming the role of dietary deficits of magnesium and latent tetany as factors triggering migraine attacks. The aim of the study was to evaluate the influence of latent magnesium deficiency assessed with the electrophysiological tetany test on the course of migraine. The study included: a group of 35 patients (29 women and six men; in mean age 41 years) with migraine and a control group of 24 (17 women and seven men; in mean age 39 years) healthy volunteers. Migraine diagnosis was based on the International Headache Society criteria, 3rd edition. All patients and controls after full general and neurological examination were subjected to a standard electrophysiological ischemic tetany test. Moreover, the level of magnesium in blood serum was tested and was in the normal range in all patients. Then, the incidence of a positive tetany EMG test results in the migraine group and the results in the subgroups with and without aura were compared to the results in the control group. Moreover, the relationship between clinical markers of spasmophilia and the results of the tetany test was investigated in the migraine group. As well as the relationship between migraine frequency and tetany test results. There was no statistically significant difference in the occurrence of the electrophysiological exponent of spasmophilia between the migraine and control group. Neither correlation between the occurrence of clinical symptoms nor the frequency of migraine attacks and the results of the tetany test was stated (p > 0.05). However, there was an apparent statistical difference between the subgroup of migraine patients with aura in relation to the control group (p < 0.05). The result raises hope to find a trigger for migraine attacks of this clinical form, the more that this factor may turn out to be easy to supplement with dietary supplementation.


Asunto(s)
Electromiografía/métodos , Deficiencia de Magnesio/fisiopatología , Trastornos Migrañosos/etiología , Periodo Refractario Electrofisiológico , Tetania/fisiopatología , Adulto , Estudios de Casos y Controles , Causalidad , Membrana Celular/fisiología , Femenino , Humanos , Magnesio/sangre , Deficiencia de Magnesio/complicaciones , Deficiencia de Magnesio/diagnóstico , Masculino , Persona de Mediana Edad , Trastornos Migrañosos/sangre , Estado Nutricional , Potasio/sangre , Tetania/complicaciones , Tetania/diagnóstico , Adulto Joven
10.
Behav Brain Res ; 413: 113460, 2021 09 10.
Artículo en Inglés | MEDLINE | ID: mdl-34252502

RESUMEN

Evidence suggest that magnesium dietary supplementation has several health benefits including lowering blood pressure, reducing insulin resistance, and improving symptoms of depression, anxiety, and migraine. Here, we aimed to study the effect of chronic magnesium supplementation on anxiety-like behavior in rats by supplementing with magnesium their drinking water for 30 days. Anxiety-like behavior was induced by subcutaneous injection of veratrin 30 min before performing elevated plus maze and open field tests to measure anxiety levels and locomotion, respectively. We quantify the concentration of magnesium in plasma and cerebrospinal fluid. We used diazepam to compare the efficacy of magnesium supplementation as an anxiolytic agent. Our results show that rats supplemented with magnesium had a statistically significant decrease in anxiety levels with not effects on locomotion and a statistically significant increase in concentration of magnesium in plasma and cerebrospinal fluid. However, the anxiolytic effect of magnesium supplementation washes-out in 12 days. We discuss the advantages of using supplemental magnesium as anxiolytic.


Asunto(s)
Ansiolíticos/farmacología , Ansiedad , Conducta Animal/efectos de los fármacos , Cloruro de Magnesio/farmacología , Animales , Ansiolíticos/administración & dosificación , Ansiedad/sangre , Ansiedad/líquido cefalorraquídeo , Ansiedad/dietoterapia , Ansiedad/tratamiento farmacológico , Diazepam/farmacología , Modelos Animales de Enfermedad , Magnesio/sangre , Magnesio/líquido cefalorraquídeo , Cloruro de Magnesio/administración & dosificación , Ratas , Ratas Wistar
11.
Magnes Res ; 34(1): 9-19, 2021 Feb 01.
Artículo en Inglés | MEDLINE | ID: mdl-34165439

RESUMEN

The objective of this study was to investigate the effects of a novel form of biotin (magnesium biotinate) on serum glucose, lipid profile, and hepatic lipid metabolism-related protein levels in rats. Forty-two rats were divided into six groups and fed a standard diet-based egg white powdered diet supplemented with either d-biotin at 0.01, 1, or 100 mg/kg BW or magnesium biotinate at 0.01, 1, or 100 mg/kg BW for 35 days. Neither form of biotin influenced (p > 0.05) serum glucose or insulin concentrations. Serum total cholesterol and triglyceride decreased with biotin from both sources (p < 0.05). Concentrations were lower with magnesium biotinate when comparing the 1 mg/kg dose (p < 0.05). Serum, liver, and brain biotin and liver cyclic guanosine monophosphate (cGMP) concentrations were greater when rats were treated with magnesium biotinate versus d-biotin, particularly when comparing the 1 and 100 mg/kg dose groups (p < 0.05). Both biotin forms decreased the liver SREBP-1c and FAS and increased AMPK-α1, ACC-1, ACC-2, PCC, and MCC levels (p < 0.05). The magnitudes of responses were more emphasized with magnesium biotinate. Magnesium biotinate, compared with a commercial d-biotin, is more effective in reducing serum lipid concentrations and regulating protein levels of lipid metabolism-related biomarkers.


Asunto(s)
Biotina/farmacología , Glucemia/análisis , Insulina/sangre , Hígado/efectos de los fármacos , Magnesio/farmacología , Proteínas/metabolismo , Animales , Biotina/administración & dosificación , Biotina/sangre , Peso Corporal/efectos de los fármacos , Suplementos Dietéticos , Relación Dosis-Respuesta a Droga , Metabolismo de los Lípidos/efectos de los fármacos , Hígado/metabolismo , Magnesio/administración & dosificación , Magnesio/sangre , Masculino , Ratas , Ratas Sprague-Dawley
12.
Eur Rev Med Pharmacol Sci ; 25(10): 3772-3790, 2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-34109586

RESUMEN

Multiple epidemiological studies have suggested that industrialization and progressive urbanization should be considered one of the main factors responsible for the rising of atherosclerosis in the developing world. In this scenario, the role of trace metals in the insurgence and progression of atherosclerosis has not been clarified yet. In this paper, the specific role of selected trace elements (magnesium, zinc, selenium, iron, copper, phosphorus, and calcium) is described by focusing on the atherosclerotic prevention and pathogenesis plaque. For each element, the following data are reported: daily intake, serum levels, intra/extracellular distribution, major roles in physiology, main effects of high and low levels, specific roles in atherosclerosis, possible interactions with other trace elements, and possible influences on plaque development. For each trace element, the correlations between its levels and clinical severity and outcome of COVID-19 are discussed. Moreover, the role of matrix metalloproteinases, a family of zinc-dependent endopeptidases, as a new medical therapeutical approach to atherosclerosis is discussed. Data suggest that trace element status may influence both atherosclerosis insurgence and plaque evolution toward a stable or an unstable status. However, significant variability in the action of these traces is evident: some - including magnesium, zinc, and selenium - may have a protective role, whereas others, including iron and copper, probably have a multi-faceted and more complex role in the pathogenesis of the atherosclerotic plaque. Finally, calcium and phosphorus are implicated in the calcification of atherosclerotic plaques and in the progression of the plaque toward rupture and severe clinical complications. In particular, the role of calcium is debated. Focusing on the COVID-19 pandemia, optimized magnesium and zinc levels are indicated as important protective tools against a severe clinical course of the disease, often related to the ability of SARS-CoV-2 to cause a systemic inflammatory response, able to transform a stable plaque into an unstable one, with severe clinical complications.


Asunto(s)
Aterosclerosis/patología , Oligoelementos/metabolismo , Aterosclerosis/metabolismo , COVID-19/patología , COVID-19/virología , Calcio/sangre , Calcio/metabolismo , Cobre/sangre , Cobre/metabolismo , Humanos , Hierro/sangre , Hierro/metabolismo , Magnesio/sangre , Magnesio/metabolismo , Metaloproteinasas de la Matriz/metabolismo , Fósforo/sangre , Fósforo/metabolismo , Riesgo , SARS-CoV-2/aislamiento & purificación , Selenio/sangre , Selenio/metabolismo , Índice de Severidad de la Enfermedad , Oligoelementos/sangre , Zinc/sangre , Zinc/metabolismo
13.
Biometals ; 34(4): 715-736, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-33959846

RESUMEN

In 2009 EFSA Panel concludes that a cause and effect relationship has been established between the dietary intake of magnesium (Mg) and maintenance of normal bone. After 2009, numerous studies have been published, but no reviews have made an update on this topic. So, the aim of this narrative review was to consider the state of the art since 2009 on relationship between Mg blood levels, Mg dietary intake and Mg dietary supplementation (alone or with other micronutrients; this last topic has been considered since 1990, because it is not included in the EFSA claims) and bone health in humans. This review included 28 eligible studies: nine studies concern Mg blood, 12 studies concern Mg intake and seven studies concern Mg supplementation, alone or in combination with other nutrients. From the various studies carried out on the serum concentration of Mg and its relationship with the bone, it has been shown that lower values are related to the presence of osteoporosis, and that about 30-40% of the subjects analyzed (mainly menopausal women) have hypomagnesaemia. Various dietetic investigations have shown that many people (about 20%) constantly consume lower quantities of Mg than recommended; moreover, in this category, a lower bone mineral density and a higher fracturing risk have been found. Considering the intervention studies published to date on supplementation with Mg, most have used this mineral in the form of citrate, carbonate or oxide, with a dosage varying between 250 and 1800 mg. In all studies there was a benefit both in terms of bone mineral density and fracture risk.


Asunto(s)
Huesos/efectos de los fármacos , Magnesio/farmacología , Densidad Ósea/efectos de los fármacos , Suplementos Dietéticos , Humanos , Magnesio/administración & dosificación , Magnesio/sangre
14.
Meat Sci ; 180: 108560, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34029856

RESUMEN

This study assessed the capacity of magnesium supplementation to reduce muscle glycogen loss, ultimate pH and increase plasma magnesium in pasture fed slaughter cattle. Beef cattle (n = 1075) from 14 farms were supplemented with or without magnesium pellets for 7-14 days prior to slaughter. Magnesium was allocated at 9.83 g of elemental magnesium per head per day, while the control diet was balanced to be isoenergetic and isonitrogenous, but contained no added magnesium. Groups of cattle (n = 44) were slaughtered at the same processing plant over two consecutive seasons, from August - September 2016 to May - July 2017. Magnesium supplementation increased muscle glycogen (P < 0.01) in cattle supplied from 2 of 14 farms, and increased plasma magnesium in 4 of 14 farms (P < 0.01). Magnesium supplementation had no effect on overall incidence of ultimate pH between the magnesium and control supplementation groups. The benefits of short term magnesium supplementation prior to slaughter was inconsistent for protecting muscle glycogen.


Asunto(s)
Magnesio/administración & dosificación , Músculo Esquelético/química , Carne Roja/análisis , Alimentación Animal/análisis , Animales , Bovinos , Dieta/veterinaria , Suplementos Dietéticos , Femenino , Glucógeno/análisis , Concentración de Iones de Hidrógeno , Magnesio/sangre , Masculino , Tasmania
16.
Nutrients ; 13(5)2021 Apr 22.
Artículo en Inglés | MEDLINE | ID: mdl-33922341

RESUMEN

Dyslipidemia is a significant threat to public health worldwide and the identification of its pathogenic mechanisms, as well as novel lipid-lowering agents, are warranted. Magnesium (Mg) is a key element to human health and its deficiency has been linked to the development of lipid abnormalities and related disorders, such as the metabolic syndrome, type 2 diabetes mellitus, or cardiovascular disease. In this review, we explored the associations of Mg (dietary intake, Mg concentrations in the body) and the lipid profile, as well as the impact of Mg supplementation on serum lipids. A systematic search was computed in PubMed/MEDLINE and the Cochrane Library and 3649 potentially relevant papers were detected and screened (n = 3364 following the removal of duplicates). After the removal of irrelevant manuscripts based on the screening of their titles and abstracts (n = 3037), we examined the full-texts of 327 original papers. Finally, after we applied the exclusion and inclusion criteria, a number of 124 original articles were included in this review. Overall, the data analyzed in this review point out an association of Mg concentrations in the body with serum lipids in dyslipidemia and related disorders. However, further research is warranted to clarify whether a higher intake of Mg from the diet or via supplements can influence the lipid profile and exert lipid-lowering actions.


Asunto(s)
Dislipidemias/sangre , Lípidos/sangre , Magnesio/sangre , Estado de Salud , Humanos , Ensayos Clínicos Controlados Aleatorios como Asunto
17.
Nutrients ; 13(4)2021 Apr 14.
Artículo en Inglés | MEDLINE | ID: mdl-33919913

RESUMEN

INTRODUCTION: Magnesium (Mg2+) deficiency is a common finding in the early phase after kidney transplantation (KT) and has been linked to immune dysfunction and infections. Data on the association of hypomagnesemia and the rate of infections in kidney transplant recipients (KTRs) are sparse. METHODS: We conducted a single-center retrospective cohort study of KTRs transplanted between 2005 and 2015. Laboratory data, including serum Mg2+ (median time of the Mg2+ measurement from KT: 29 days), rate of infections including mainly urinary tract infections (UTI), and common transplant-related viral infections (CMV, polyoma, EBV) in the early phase after KT were recorded. The primary outcome was the incidence of infections within one year after KT, while secondary outcomes were hospitalization due to infection, incidence rates of long-term (up to two years) infections, and all-cause mortality. RESULTS: We enrolled 376 KTRs of whom 229 patients (60.9%) suffered from Mg2+ deficiency defined as a serum Mg2+ < 0.7 mmol/L. A significantly higher incidence rate of UTIs and viral infections was observed in patients with versus without Mg2+ deficiency during the first year after KT (58.5% vs. 47.6%, p = 0.039 and 69.9% vs. 51.7%, p < 0.001). After adjustment for potential confounders, serum Mg2+ deficiency remained an independent predictor of both UTIs and viral infections (odds ratio (OR): 1.73, 95% CI: 1.04-2.86, p = 0.035 and OR: 2.05, 95% CI: 1.23-3.41, p = 0.006). No group differences according to Mg2+ status in hospitalizations due to infections and infection incidence rates in the 12-24 months post-transplant were observed. In the Cox regression analysis, Mg2+ deficiency was not significantly associated with all-cause mortality (HR: 1.15, 95% CI: 0.70-1.89, p = 0.577). CONCLUSIONS: KTRs suffering from Mg2+ deficiency are at increased risk of UTIs and viral infections in the first year after KT. Interventional studies investigating the effect of Mg2+ supplementation on Mg2+ deficiency and viral infections in KTRs are needed.


Asunto(s)
Trasplante de Riñón/efectos adversos , Deficiencia de Magnesio/complicaciones , Complicaciones Posoperatorias/epidemiología , Infecciones Urinarias/epidemiología , Virosis/epidemiología , Adulto , Femenino , Humanos , Magnesio/sangre , Deficiencia de Magnesio/sangre , Deficiencia de Magnesio/diagnóstico , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/etiología , Estudios Retrospectivos , Medición de Riesgo/estadística & datos numéricos , Factores de Riesgo , Receptores de Trasplantes/estadística & datos numéricos , Infecciones Urinarias/etiología , Virosis/etiología
18.
Sci Rep ; 11(1): 5734, 2021 03 11.
Artículo en Inglés | MEDLINE | ID: mdl-33707700

RESUMEN

This study was aimed to assess the effectiveness of magnesium (Mg)-vitamin B 6 replenishment and its correlation with clinical status in pregnant women (PW), and quality of life in women with hormone-related conditions (HRCW) and hypomagnesemia (HME). Data collected in four observational studies were pooled and analysed. All women received Mg supplementation for 4 weeks. The proportion of women with normalized Mg level, and the correlation between serum Mg dynamics and number of symptoms/complaints (PW) or changes in World Health Organization quality of life questionnaire scores (WHOQOL; HRCW) were evaluated. 869 PW and 957 HRCW were included in the study. Normalization of serum Mg level to ≥ 0.66 mmol/L occurred in 92.1% of PW and 78.4% of HRCW, and to ≥ 0.8 mmol/L in 73.8% and 58.9%, respectively. Mg normalization was accompanied by a median decrease of 1 symptom and 1 complaint in PW. Serum Mg level increase by 0.1 mmol/L was associated to significant changes in the WHOQOL scores in HRCW. Treatment of HME with the Mg for approximately 4 weeks provided a high response rate of Mg serum level, was associated with an improvement in symptom severity and complaints in PW, and WHOQOL score in HRCW. A 0.8 mmol/L cut-off appeared to be more relevant in terms of patient-reported outcomes.


Asunto(s)
Hormonas/metabolismo , Magnesio/sangre , Calidad de Vida , Aborto Espontáneo , Adulto , Estudios de Cohortes , Femenino , Humanos , Modelos Lineales , Embarazo
19.
Ann Afr Med ; 20(1): 64-68, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33727515

RESUMEN

Magnesium (Mg) is an extremely important mineral. It plays major roles in physiological activities of the body. Lower intake of Mg and low-serum Mg concentrations are associated with metabolic syndrome, insulin resistance, and Type-2 diabetes. Aim: The aim of the study is to evaluate the association between concentration levels of serum Mg and common complications and co morbidities of diabetes mellitus and other biochemical indices. It is a case control study conducted in our department of endocrinology in Hassan II University Hospital of Fez from January 2015 to 2018. Our patients were classified into two groups. Low Mg (Group 1, n = 85) and normal Mg group (Group 2, n = 85). We evaluated demographics characteristics of our patients; the association between Mg status and clinical, biological parameters; and association between Mg status and degenerative complications. Our study included 170 patients. The research results showed that serum Mg level was strongly related to age, sex, diabetes duration, body mass index, hypertension, and glycosylated hemoglobin. Concerning common complication; we only found a negative correlation between Mg level and the existence of nephropathy. We did not find significant correlation with retinopathy; neuropathy; and macroangiopathy. The study has demonstrated that a low Mg level is correlated with a poor control glycemic; high blood pressure and nephropathy in patients with Type 2 diabetes. However, more research is needed to confirm these effects.


Résumé Le magnésium (Mg) est un minéral extrêmement important. Il joue un rôle majeur dans les activités physiologiques du corps. Une consommation plus faible de Mg ainsi qu'une faible concentration sérique est associée au syndrome métabolique, la résistance à l'insuline et au diabète de type 2.le but de notre étude est d'évaluer le lien entre les niveaux de concentration du Mg sérique et les complications du diabète sucré. C'est une étude cas-témoins menée au service d'Endocrinologie au CHU Hassan II de Fès entre janvier 2015 est 2018. Nos patients ont été classés en deux groupes. Groupe ayant une magnésémie faible (groupe 1, n = 85) et groupe ayant une magnésémie normale (groupe 2, n = 85). Nous avons évalué les données démographiques de nos patients; l'association entre le statut en Mg et les paramètres cliniques et biologiques ainsi que l'association entre le statut de Mg et complications dégénératives. On a inclus 170 patients. Notre étude a montré que le taux sérique de Mg était fortement lié à âge, sexe, durée du diabète, indice de masse corporelle, hypertension et hémoglobine glycosylée. Concernant les complications courantes; nous avons seulement trouvé une corrélation négative entre le niveau de Mg et l'existence d'une néphropathie. Nous n'avons pas trouvé de corrélation significative avec la rétinopathie; neuropathie; et macro angiopathie. Notre étude a démontré qu'un faible niveau de Mg est corrélé à un mauvais contrôle glycémique; hypertension artérielle et néphropathie chez les patients atteints de diabète de type 2. Cependant, des recherches supplémentaires sont nécessaires pour confirmer ces constations.


Asunto(s)
Diabetes Mellitus Tipo 2/sangre , Nefropatías Diabéticas/epidemiología , Magnesio/sangre , Adulto , Glucemia/metabolismo , Estudios de Casos y Controles , Comorbilidad , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/epidemiología , Femenino , Hemoglobina Glucada/metabolismo , Humanos , Hipertensión/complicaciones , Hipertensión/epidemiología , Masculino , Persona de Mediana Edad
20.
Trop Anim Health Prod ; 53(1): 73, 2021 Jan 05.
Artículo en Inglés | MEDLINE | ID: mdl-33400003

RESUMEN

In postpartum buffaloes, the process of uterine involution and changes in blood metabolic profile has not been studied in relation to development of subclinical endometritis (SCE). In this study, buffaloes (n = 100) approaching calving were identified. Weekly blood samples were collected on the day of calving up to 6 weeks post-calving. The diameter of uterine horns and onset of ovarian cyclicity (corpus luteum) were recorded through ultrasonography. On the basis of polymorphonuclear cell (PMN) cell count in endometrial cytology at days 45-50 postpartum, buffaloes were divided into two groups, viz., with SCE (> 5% PMN; n = 38) and without SCE (≤ 5% PMN; n = 62). Buffaloes with SCE took longer (P < 0.05) time to complete uterine involution and had larger (P < 0.05) uterine horn diameter between 3rd and 6th weeks postpartum and lower prostaglandin F2α metabolite (PGFM) concentration on the day of calving (P < 0.05) and 1 week (P < 0.001) post-calving than without SCE group. Buffaloes with SCE had lower (P < 0.001) concentration of glucose at weeks 2 and 3, higher (P < 0.001) ß-hydroxybutyric acid (BHBA) at week 3, and lower serum albumin concentration throughout the sampling period (P < 0.05 to 0.001) except at 1 week post-calving as compared to without SCE group. The urea concentration was significantly lower (P < 0.05 to 0.001) in buffaloes with SCE from 4 weeks post-calving onwards than without SCE group. The calcium concentration was lower in buffaloes with SCE at weeks 5 (P < 0.001) and 6 (P < 0.05) postpartum, whereas the concentration of magnesium and phosphorus was uniform between the two groups. No significant (P > 0.05) difference in onset of ovarian cyclicity between the 2 groups was observed, whereas buffaloes with SCE had longer (P = 0.001) median days open (141 days) than their counterpart (117 days). The first service conception rate, cumulative pregnancy rate, and pregnancy rate at 150 days postpartum were lower (P < 0.05) in buffaloes with SCE than without SCE group. In summary, higher BHBA and lower serum concentrations of glucose, albumin, urea, and calcium control onset of subclinical endometritis which in turn has negative impact on fertility of buffaloes.


Asunto(s)
Búfalos/fisiología , Endometritis/veterinaria , Fertilidad , Periodo Posparto/sangre , Útero/anatomía & histología , Ácido 3-Hidroxibutírico/sangre , Animales , Glucemia/metabolismo , Búfalos/sangre , Calcio/sangre , Endometritis/epidemiología , Endometritis/fisiopatología , Endometrio/citología , Endometrio/metabolismo , Femenino , Magnesio/sangre , Fósforo/sangre , Periodo Posparto/fisiología , Embarazo , Prevalencia , Albúmina Sérica/análisis , Ultrasonografía/veterinaria , Urea/sangre , Útero/diagnóstico por imagen , Útero/fisiología
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA