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Objective: to evaluate the effectiveness and safety of rehabilitation programmes in patients with vulvovaginal atrophy (VVA).Material and methods. The study involved 350 patients with VVA in surgical (n=140) and natural (n=140) menopause, the control group included 70 women without VVA. Patients with VVA were distributed into groups receiving complex “active” rehabilitation (surgical menopause: group 1A, natural menopause: group 2A) and “passive” rehabilitation (surgical menopause: group 1B, natural menopause: group 2B). Body mass index (BMI), vaginal pH, carbohydrate profile with calculation of insulin resistance index (HOMA-IR), inflammatory markers leptin, interleukin-6, tumour necrosis factor alpha, serum magnesium, and safety profile with evaluation of adverse events related to rehabilitation measures were assessed over 24 months.Results. BMI decreased significantly in groups 1A and 2A. Vaginal pH at 1-year follow-up decreased in groups 1A and 2A, but increased in groups 2A and 2B. BMI was higher than normal in all patients with VVA, as well as in the control group, demonstrating preobesity (groups 1A, 2A, control group) or first-degree obesity (initially in group 1B and throughout follow-up in group 2B). HOMA-IR initially reflected postoperative insulin resistance in groups 1A and 2A, but in those receiving complex “active” rehabilitation the dynamics of its reduction was the most pronounced. The concentration of inflammatory markers was initially increased compared to the control group and decreased over time in groups 1A and 1B, but only leptin levels reached the control group values by the end of the study. Serum concentration of magnesium levels was 0.71±0.12 mmol/l in group 1A, 0.71±0.10 mmol/l in group 2A, 0.76±0.08 mmol/l in group 1B, 0.72±0.17 mmol/l in group 2B (magnesium deficiency). When organic magnesium salts in combination with pyridoxine were supplemented in groups 1A and 1B, serum magnesium levels were restored to normal from the 3rd month of follow-up. No adverse events were registered.Conclusion. The personalised programme of complex “active” rehabilitation in patients with VVA is more effective than “passive” rehabilitation with comparable safety profile. Its implementation into routine practice will contribute to the improvement of the quality of health care for such patients.

Aim: to evaluate the impact of rehabilitation on various components of quality of life (QoL) in patients with vulvovaginal atrophy (VVA).Materials and Methods. A prospective comparative controlled longitudinal study involved 350 patients with VVA, divided into groups based on the type of menopause: surgical (n = 140) and natural (n = 140), with a control group of 70 women without VVA. Patients were further subdivided into those receiving complex "active" (groups 1A, 2A) and "passive" (groups 1B, 2B) rehabilitation. The study included 6 visits over 24 months, assessing QoL using the Female Sexual Function Index (FSFI), Hospital Anxiety and Depression Scale (HADS), Modified Menopausal Index (MMI), Well-being, Activity, Mood questionnaire (WAM), Magnesium Deficiency Questionnaire (MDQ), and the Assessment Test of Magnesium Deficiency (ATMD).Results. Women with surgical menopause had severe sexual dysfunction initially. Complex "active" rehabilitation significantly improved sexual function over time compared to "passive" rehabilitation. Surgical menopausal women had higher initial levels of anxiety and depression. "Active" rehabilitation significantly reduced these levels, reaching normal values within the first year. Patients with surgical menopause exhibited more severe menopausal symptoms. "Active" rehabilitation led to significant reductions in these symptoms, improved well-being, activity, and mood more significantly than "passive" rehabilitation, particularly in the first year. Complex "active" rehabilitation normalized magnesium deficiency indicators within three months, maintaining normal levels throughout the study.Conclusion. Comprehensive "active" rehabilitation significantly improves sexual function, reduces anxiety and depression, alleviates menopausal symptoms, and enhances overall well-being in women with VVA, especially those in surgical menopause. Personalized rehabilitation programs are crucial for enhancing QoL in these patients.

We report the case of a girl with a history of seizures associated with severe and persistent hypermagnesemia, hypocalcemia, hypercalciuria, metabolic acidosis, nephrocalcinosis, and progressive renal function deterioration leading to chronic renal failure stage 5 (ESCRD). A familial history of chronic renal disease, renal lithiasis, and paternal consanguinity prompted a genetic study identifying a pathogenic mutation in homozygosis c.446 G>A (p.R149Q) located in the exon 3 of the gen CLDN16 confirming the diagnosis of familial hypomagnesemia with hypercalciuria and nephrocalcinosis (FHHNC) with no severe ocular defects. The post-renal transplant is presented, showing good survival of the graft. [ABSTRACT FROM AUTHOR]

High light (HL) significantly impacts plant photosynthesis. This study investigated the effects of different magnesium (Mg) levels (0, 1, 2, and 5 mol Mg plant−1; HMg0, HMg1, HMg2, and HMg5) on tobacco (Nicotiana tabacum L. cv. Cuibi No. 1) under HL (1500 μmol m−2 s−1), aiming to understand the role of Mg in mitigating the impact of HL on photosynthesis and carbon–nitrogen metabolism. Plants treated with 1 mol Mg plant−1 under 750 μmol m−2 s−1 light conditions served as the control. HL led to a reduced chlorophyll (Chl) content and inhibited the maximum photosynthetic rate (Pmax). It also decreased energy involved in photosynthetic electron transfer (ET) and electron flux to reduction end-electron acceptors at the photosystems I (PSI) acceptor side (RE) and caused photosynthetic system damage. H2O2 accumulation exacerbated membrane lipid peroxidation damage, disrupting carbon and nitrogen metabolism, and inducing antioxidant enzyme activity. HMg2 increased Chl content, stomatal conductance, intercellular CO2 concentration, and the net photosynthetic rate compared to HMg0. It enhanced ET efficiency, PSI and PSII functionality, reduced dissipated energy flux (DI), and minimized photosynthesis damage. Conversely, excessive Mg application (HMg5) decreased Pmax and PSII activity, increasing DI. Adequate Mg supply alleviated HL's detrimental effects by enhancing Chl content and ET and RE efficiency. [ABSTRACT FROM AUTHOR]

Magnesium is a key element for plant growth and development. Plant responses to Mg deficiency were well investigated, especially in glycophytes. Such responses include a reduction in plant growth and biomass allocation between shoots and roots, photosynthates partitioning from source to sink organs, the accumulation of carbohydrates, and an induction of several Mg transporters. Some physiological and biochemical parameters are good markers of Mg deficiency stress even though they are not well investigated. In the present study, the halophyte Cakile maritima was subjected to Mg shortage, and several Mg stress indices were analyzed. Our data showed that Mg starvation affected shoot and plant length, leaf number, and plant organ growth. A significant decrease in chlorophyll synthesis and photosynthetic activity was also recorded. Mg deficiency triggered oxidative damage as electrolyte leakage and lipid peroxidation were increased by Mg deficiency while the membrane stability index decreased. For a deeper understanding of the effect of Mg starvation on C. maritima, several tolerance stress indices were evaluated, demonstrating a negative impact of Mg stress on almost all those parameters. This study provided important insights on several markers of Mg deficiency stress, which were informative by themselves as unique and early signals of Mg deficiency stress in this halophyte. [ABSTRACT FROM AUTHOR]

Magnesium is an important cofactor for metabolic reactions involving more than 300 enzymes, regulating a series of fundamental processes, such as myocardial contraction and blood pressure control, glucose regulation, participation in neuromuscular transmission. The prevalence of magnesium deficiency in various cohorts of fertile age women comprises up to 73.8 %. In clinical studies it was demonstrated that magnesium deficiency is associated with diseases and states such as dysmenorrhea, premenstrual syndrome (PMS), polycystic ovary syndrome (POS), climacteric syndrome, osteoporosis, use of combined oral contraceptives (COCs) and menopausal hormone therapy (MHT). Magnesium supplementation in combination with basic therapy can positively affect course and outcome of such pathologies. Magnesium organic salts could be used for countering magnesium deficiency. Among such agents, magnesium citrate has some advantage used in combination with pyridoxine (vitamin B6) providing additional effects. Health care professionals should be guided by the criteria for Mg-containing preparation selection, defined by the Russian Society of Obstetricians and Gynecologists (RSOG).

Magnesium is a key element for plant growth and development. Plant responses to Mg deficiency were well investigated, especially in glycophytes. Such responses include a reduction in plant growth and biomass allocation between shoots and roots, photosynthates partitioning from source to sink organs, the accumulation of carbohydrates, and an induction of several Mg transporters. Some physiological and biochemical parameters are good markers of Mg deficiency stress even though they are not well investigated. In the present study, the halophyte Cakile maritima was subjected to Mg shortage, and several Mg stress indices were analyzed. Our data showed that Mg starvation affected shoot and plant length, leaf number, and plant organ growth. A significant decrease in chlorophyll synthesis and photosynthetic activity was also recorded. Mg deficiency triggered oxidative damage as electrolyte leakage and lipid peroxidation were increased by Mg deficiency while the membrane stability index decreased. For a deeper understanding of the effect of Mg starvation on C. maritima, several tolerance stress indices were evaluated, demonstrating a negative impact of Mg stress on almost all those parameters. This study provided important insights on several markers of Mg deficiency stress, which were informative by themselves as unique and early signals of Mg deficiency stress in this halophyte.

Abstract Background Sepsis-3 emphasizes the recognition of sepsis-induced cellular metabolic abnormalities, and utilizes serum lactate level as a biomarker of cellular metabolic abnormalities. Magnesium plays an important role as a cofactor in glucose metabolism, although it is not well known that magnesium deficiency causes elevated serum lactate levels. Additionally, it remains unclear how magnesium status affects the role of serum lactate levels as a marker of metabolic abnormalities in sepsis. Thus, this study aimed to investigate the association between serum magnesium and lactate levels in patients with sepsis and explore this relationship from the perspectives of time course and circulatory abnormalities. Methods This retrospective observational study of adult patients with sepsis was performed at the 16-bed intensive care unit of Jichi Medical University Hospital between June 2011 and December 2017. The relationship between serum magnesium and lactate levels for 5 days from intensive care unit admission was investigated along the time course. Multivariate logistic regression analysis was performed to evaluate the association between serum magnesium and lactate levels during intensive care unit admission. Results Among 759 patients included, 105 had hypomagnesemia (magnesium level 2.4 mg/dL) at intensive care unit admission. From intensive care unit admission to day 5, the hypomagnesemia group had higher serum lactate levels and a higher frequency of lactic acidosis than the normal magnesium level and hypermagnesemia groups (70% vs. 51.6% vs. 50%; P 2 mmol/L (odds ratio, 2.76; 95% confidence interval, 1.60–4.76; P

Endothelial dysfunction is a crucial event in the early pathogenesis of cardiovascular diseases and is linked to magnesium (Mg) deficiency. Indeed, in endothelial cells, low Mg levels promote the acquisition of a pro-inflammatory and pro-atherogenic phenotype. This paper investigates the mechanisms by which Mg deficiency promotes oxidative stress and affects endothelial behavior in human umbilical vascular endothelial cells (HUVECs). Our data show that low Mg levels trigger oxidative stress initially by increasing NAPDH oxidase activity and then by upregulating the pro-oxidant thioredoxin-interacting protein TXNIP. The overproduction of reactive oxygen species (ROS) activates NF-κB, leading to its increased binding to the inducible nitric oxide synthase (iNOS) promoter, with the consequent increase in iNOS expression. The increased levels of nitric oxide (NO) generated by upregulated iNOS contribute to disrupting endothelial cell function by inhibiting growth and increasing permeability. In conclusion, we provide evidence that multiple mechanisms contribute to generate a pro-oxidant state under low-Mg conditions, ultimately affecting endothelial physiology. These data add support to the notion that adequate Mg levels play a significant role in preserving cardiovascular health and may suggest new approaches to prevent or manage cardiovascular diseases. [ABSTRACT FROM AUTHOR]

Introduction: Magnesium is a vital intracellular cation crucial for over 320 enzymatic reactions related to energy metabolism, musculoskeletal function, and nucleic acid synthesis and plays a pivotal role in human physiology. This study aimed to explore the prevalence of dysmagnesemia in patients with diabetes mellitus and evaluate its correlations with glycemic control, medication use, and diabetic complications. Methods: A cross-sectional study was conducted at Sultan Qaboos University Hospital, including 316 patients aged 18 years or older with diabetes mellitus. Data included demographics, medical history, medications, and biochemical parameters. Serum total magnesium concentrations were measured, and dysmagnesemia was defined as magnesium ≤ 0.69 mmol/L for hypomagnesemia and ≥1.01 mmol/L for hypermagnesemia. Results: The prevalence of hypomagnesemia in patients with diabetes was 17.1% (95% CI: 13.3–21.7%), and hypermagnesemia was 4.1% (95% CI: 2.4–7.0%). Females were significantly overrepresented in the hypomagnesemia group, while the hypermagnesemia group showed a higher prevalence of hypertension, retinopathy, an increased albumin/creatinine ratio, chronic kidney disease (CKD), elevated creatinine levels, and a lower adjusted calcium concentration. The multinominal logistic regression exhibited that the female sex and higher serum-adjusted calcium were independent risk factors of hypomagnesemia. In contrast, the presence of hypertension, higher levels of albumin/creatinine ratio, and stage 5 CKD were independent risk factors of hypermagnesemia. Conclusions: Hypomagnesemia was common among patients with diabetes mellitus; however, hypermagnesemia was associated with microvascular complications. [ABSTRACT FROM AUTHOR]

Background: Sepsis-3 emphasizes the recognition of sepsis-induced cellular metabolic abnormalities, and utilizes serum lactate level as a biomarker of cellular metabolic abnormalities. Magnesium plays an important role as a cofactor in glucose metabolism, although it is not well known that magnesium deficiency causes elevated serum lactate levels. Additionally, it remains unclear how magnesium status affects the role of serum lactate levels as a marker of metabolic abnormalities in sepsis. Thus, this study aimed to investigate the association between serum magnesium and lactate levels in patients with sepsis and explore this relationship from the perspectives of time course and circulatory abnormalities. Methods: This retrospective observational study of adult patients with sepsis was performed at the 16-bed intensive care unit of Jichi Medical University Hospital between June 2011 and December 2017. The relationship between serum magnesium and lactate levels for 5 days from intensive care unit admission was investigated along the time course. Multivariate logistic regression analysis was performed to evaluate the association between serum magnesium and lactate levels during intensive care unit admission. Results: Among 759 patients included, 105 had hypomagnesemia (magnesium level < 1.6 mg/dL), 558 had normal serum magnesium levels (1.6–2.4 mg/dL), and 96 had hypermagnesemia (magnesium level > 2.4 mg/dL) at intensive care unit admission. From intensive care unit admission to day 5, the hypomagnesemia group had higher serum lactate levels and a higher frequency of lactic acidosis than the normal magnesium level and hypermagnesemia groups (70% vs. 51.6% vs. 50%; P < 0.001). Hypomagnesemia at intensive care unit admission was independently associated with lactic acidosis, i.e., lactic acid level > 2 mmol/L (odds ratio, 2.76; 95% confidence interval, 1.60–4.76; P < 0.001). Conclusions: Hypomagnesemia was associated with serum lactate levels in the early and post-resuscitation phases of sepsis. Further studies are needed to elucidate whether the magnesium status is associated with sepsis-induced cellular and metabolic abnormalities. [ABSTRACT FROM AUTHOR]

SUMMARY: Plants grown under low magnesium (Mg) soils are highly susceptible to encountering light intensities that exceed the capacity of photosynthesis (A), leading to a depression of photosynthetic efficiency and eventually to photooxidation (i.e., leaf chlorosis). Yet, it remains unclear which processes play a key role in limiting the photosynthetic energy utilization of Mg‐deficient leaves, and whether the plasticity of A in acclimation to irradiance could have cross‐talk with Mg, hence accelerating or mitigating the photodamage. We investigated the light acclimation responses of rapeseed (Brassica napus) grown under low‐ and adequate‐Mg conditions. Magnesium deficiency considerably decreased rapeseed growth and leaf A, to a greater extent under high than under low light, which is associated with higher level of superoxide anion radical and more severe leaf chlorosis. This difference was mainly attributable to a greater depression in dark reaction under high light, with a higher Rubisco fallover and a more limited mesophyll conductance to CO2 (gm). Plants grown under high irradiance enhanced the content and activity of Rubisco and gm to optimally utilize more light energy absorbed. However, Mg deficiency could not fulfill the need to activate the higher level of Rubisco and Rubisco activase in leaves of high‐light‐grown plants, leading to lower Rubisco activation and carboxylation rate. Additionally, Mg‐deficient leaves under high light invested more carbon per leaf area to construct a compact leaf structure with smaller intercellular airspaces, lower surface area of chloroplast exposed to intercellular airspaces, and CO2 diffusion conductance through cytosol. These caused a more severe decrease in within‐leaf CO2 diffusion rate and substrate availability. Taken together, plant plasticity helps to improve photosynthetic energy utilization under high light but aggravates the photooxidative damage once the Mg nutrition becomes insufficient. Significance Statement: Plants grown under low Mg soils are highly susceptible to excessive light intensity, resulting in photooxidation and subsequent leaf chlorosis. The results indicated that plant plasticity, such as increasing Rubisco content and gm, helps to improve photosynthetic energy utilization under high light but aggravates the photooxidative damage once the Mg nutrition becomes insufficient. [ABSTRACT FROM AUTHOR]

Magnesium (Mg) is a macronutrient that is necessary for both plant growth and health. It is involved in different metabolic processes, including photosynthesis, chlorophyll biosynthesis, and many enzymes in plant cells. The plant’s need for magnesium differs from one species to another. Advances in the understanding of common bean requirements for Mg and its relationships with the key metabolic reactions are an essential tool to improve Mg management in Tunisian agrosystems and identify useful markers for assisted breeding efforts. For this purpose, a greenhouse experiment was conducted on two common bean (Phaseolus vulgaris L.) cultivars (coco nain, CN, and coco blanc, CB) subjected to different Mg concentrations (0, 1, 2, 4, 6, and 8 mM). Plant growth, gas exchange, photosynthetic pigments, and Mg uptake and compartmentation are evaluated. The obtained results demonstrated that the optimal Mg concentration for maximum common bean growth and associated physiological functioning is 6 mM Mg. Below this concentration, plants suffer from Mg deficiency, while above this dose, plants are subjected to Mg toxicity. Photosynthetic pigments as well as photosynthesis are significantly hampered by Mg deficiency as well as toxicity while remaining strictly dependent on plant Mg content. The genotype CN showed better tolerance as compared to CB. It has a greater ability to remobilize Mg in deficient conditions, and its allocation to shoots allows it to maintain important metabolic functions. The calculated stress index (SI) clearly discriminated the studied genotypes and confirmed the tolerance of CN as compared to CB. [ABSTRACT FROM AUTHOR]

High light (HL) significantly impacts plant photosynthesis. This study investigated the effects of different magnesium (Mg) levels (0, 1, 2, and 5 mol Mg plant−1; HMg0, HMg1, HMg2, and HMg5) on tobacco (Nicotiana tabacum L. cv. Cuibi No. 1) under HL (1500 μmol m−2 s−1), aiming to understand the role of Mg in mitigating the impact of HL on photosynthesis and carbon–nitrogen metabolism. Plants treated with 1 mol Mg plant−1 under 750 μmol m−2 s−1 light conditions served as the control. HL led to a reduced chlorophyll (Chl) content and inhibited the maximum photosynthetic rate (Pmax). It also decreased energy involved in photosynthetic electron transfer (ET) and electron flux to reduction end-electron acceptors at the photosystems I (PSI) acceptor side (RE) and caused photosynthetic system damage. H2O2 accumulation exacerbated membrane lipid peroxidation damage, disrupting carbon and nitrogen metabolism, and inducing antioxidant enzyme activity. HMg2 increased Chl content, stomatal conductance, intercellular CO2 concentration, and the net photosynthetic rate compared to HMg0. It enhanced ET efficiency, PSI and PSII functionality, reduced dissipated energy flux (DI), and minimized photosynthesis damage. Conversely, excessive Mg application (HMg5) decreased Pmax and PSII activity, increasing DI. Adequate Mg supply alleviated HL’s detrimental effects by enhancing Chl content and ET and RE efficiency.

Banana is an important tropical fruit belonging to the Musa family, which is susceptible to nutritional deficiency symptoms during cultivation. Due to magnesium deficiency, the growth of bananas (Musa paradisiaca AA) is inhibited, and become prone to diseases and pests, which decreases the yield and quality of bananas. Basic helix-loop-helix(bHLH) is one of the largest transcription factor(TF) families in plants. It plays an important role in plant growth, development as well as resistance against abiotic stresses. In this research, 177 MabHLH proteins with four conserved subdomains were obtained via 166 AtbHLH proteins were applied to homologous comparisons from the banana genome database, which carried five highly conserved key amino acid residues consist of Arg-8, Arg-9, Leu-19, Leu-45 and Leu-52. Then, 12 subfamilies were divided according to the phylogenetic tree of 177 MabHLHs with wholly distributed in 11 chromosomes of banana. Functional prediction substantiated that subfamilies of 177 MabHLHs were involved in different biological and abiotic stresses, homeostasis regulation, cell signaling, plant growth and development and so on. Transcriptome analysis showed that the expression of 45 MabHLHs existed a significant difference in response to magnesium deficiency stress, among 16 MabHLHs were part of Group III and IVa. The qRT-PCR experiment of 18 MabHLHs confirmed that MabHLHs did play an important role in magnesium deficiency stress. Above all, we studied the MabHLH gene family of bananas to dig out the potential regulatory genes against magnesium deficiency stress, which are holpful to further improve the stress resistance level of bananas under magnesium deficiency. [ABSTRACT FROM AUTHOR]

Magnesium is an essential cation present in the body that participates in the regulation of various vital body functions. Maintaining normal level of magnesium is essential for proper brain functions by regulating the activities of numerous neurotransmitters and their receptors. Various studies have been reported that magnesium level is found to be declined in both neurological and psychiatric diseases. Declined magnesium level in the brain initiates various cumbersome effects like excitotoxicity, altered blood–brain permeability, oxidative stress, and inflammation, which may further worsen the disease condition. Shreds of evidence from the experimental and clinical studies proved that exogenous administration of magnesium is useful for correcting disease-induced alterations in the brain. But one of the major limiting factors in the use of magnesium for treatment purposes is its poor blood–brain barrier permeability. Various approaches like the administration of its organic salts as pidolate and threonate forms, and the combination with polyethylene glycol or mannitol have been tried to improve its permeability to make magnesium as a suitable drug for different neurological disorders. These results have shown their experimental efficacy in diseased animal models, but studies regarding the safety and efficacy in human subjects are currently underway. We present a comprehensive review on the role of magnesium in the maintenance of normal functioning of the brain and various approaches for improving its BBB permeability. [ABSTRACT FROM AUTHOR]

Endothelial dysfunction is a crucial event in the early pathogenesis of cardiovascular diseases and is linked to magnesium (Mg) deficiency. Indeed, in endothelial cells, low Mg levels promote the acquisition of a pro-inflammatory and pro-atherogenic phenotype. This paper investigates the mechanisms by which Mg deficiency promotes oxidative stress and affects endothelial behavior in human umbilical vascular endothelial cells (HUVECs). Our data show that low Mg levels trigger oxidative stress initially by increasing NAPDH oxidase activity and then by upregulating the pro-oxidant thioredoxin-interacting protein TXNIP. The overproduction of reactive oxygen species (ROS) activates NF-κB, leading to its increased binding to the inducible nitric oxide synthase (iNOS) promoter, with the consequent increase in iNOS expression. The increased levels of nitric oxide (NO) generated by upregulated iNOS contribute to disrupting endothelial cell function by inhibiting growth and increasing permeability. In conclusion, we provide evidence that multiple mechanisms contribute to generate a pro-oxidant state under low-Mg conditions, ultimately affecting endothelial physiology. These data add support to the notion that adequate Mg levels play a significant role in preserving cardiovascular health and may suggest new approaches to prevent or manage cardiovascular diseases.

Introduction: Magnesium is a vital intracellular cation crucial for over 320 enzymatic reactions related to energy metabolism, musculoskeletal function, and nucleic acid synthesis and plays a pivotal role in human physiology. This study aimed to explore the prevalence of dysmagnesemia in patients with diabetes mellitus and evaluate its correlations with glycemic control, medication use, and diabetic complications. Methods: A cross-sectional study was conducted at Sultan Qaboos University Hospital, including 316 patients aged 18 years or older with diabetes mellitus. Data included demographics, medical history, medications, and biochemical parameters. Serum total magnesium concentrations were measured, and dysmagnesemia was defined as magnesium ≤ 0.69 mmol/L for hypomagnesemia and ≥1.01 mmol/L for hypermagnesemia. Results: The prevalence of hypomagnesemia in patients with diabetes was 17.1% (95% CI: 13.3–21.7%), and hypermagnesemia was 4.1% (95% CI: 2.4–7.0%). Females were significantly overrepresented in the hypomagnesemia group, while the hypermagnesemia group showed a higher prevalence of hypertension, retinopathy, an increased albumin/creatinine ratio, chronic kidney disease (CKD), elevated creatinine levels, and a lower adjusted calcium concentration. The multinominal logistic regression exhibited that the female sex and higher serum-adjusted calcium were independent risk factors of hypomagnesemia. In contrast, the presence of hypertension, higher levels of albumin/creatinine ratio, and stage 5 CKD were independent risk factors of hypermagnesemia. Conclusions: Hypomagnesemia was common among patients with diabetes mellitus; however, hypermagnesemia was associated with microvascular complications.

X-linked immunodeficiency with magnesium defect, EBV infection, and neoplasia (XMEN) disease are caused by deficiency of the magnesium transporter 1 (MAGT1) gene. We studied 23 patients with XMEN, 8 of whom were EBV naive. We observed lymphadenopathy (LAD), cytopenias, liver disease, cavum septum pellucidum (CSP), and increased CD4-CD8-B220-TCRαβ+ T cells (αβDNTs), in addition to the previously described features of an inverted CD4/CD8 ratio, CD4+ T lymphocytopenia, increased B cells, dysgammaglobulinemia, and decreased expression of the natural killer group 2, member D (NKG2D) receptor. EBV-associated B cell malignancies occurred frequently in EBV-infected patients. We studied patients with XMEN and patients with autoimmune lymphoproliferative syndrome (ALPS) by deep immunophenotyping (32 immune markers) using time-of-flight mass cytometry (CyTOF). Our analysis revealed that the abundance of 2 populations of naive B cells (CD20+CD27-CD22+IgM+HLA-DR+CXCR5+CXCR4++CD10+CD38+ and CD20+CD27-CD22+IgM+HLA-DR+CXCR5+CXCR4+CD10-CD38-) could differentially classify XMEN, ALPS, and healthy individuals. We also performed glycoproteomics analysis on T lymphocytes and show that XMEN disease is a congenital disorder of glycosylation that affects a restricted subset of glycoproteins. Transfection of MAGT1 mRNA enabled us to rescue proteins with defective glycosylation. Together, these data provide new clinical and pathophysiological foundations with important ramifications for the diagnosis and treatment of XMEN disease.

Background. The increase in the proportion of patients with menopausal syndrome (MS) and surgical menopause, including women in the recovery phase after radical surgical treatment of the reproductive system cancer, is a characteristic trend of the 21st century. Part of them receive menopausal hormone therapy (MHT). This determines the relevance of the analysis of the specified cohort of patients to enhance rehabilitation programs designed to improve the quality of life (QoL) in this category of gynecological patients.Objective: subanalysis of primary data from the MAGYN study cohort of MHT treated women with MS and surgical menopause.Material and methods. The MAGYN observational non-interventional study of the real clinical practice included 9168 women, of whom 1528 represented a group of previously not characterized MHT treated women with MS and surgical menopause. To determine the number of patients with magnesium deficiency (MD), a Magnesium Deficiency Questionnaire (MDQ) was used, a biochemical blood test with an indicator of serum magnesium concentration was evaluated. The profile of the participants was analyzed by the presence of general somatic pathologies, obstetric, gynecological history, complaints, symptoms of MD on a visual-analog scale. The QoL was assessed with the help of The World Health Organization Quality of Life Brief Version (WHOQOL-BREF) before the start of a 4-week course of MD supplementation and after treatment.Results. According to the MDQ results, the prevalence of DM was 79.4%, which exceeded the results of all other groups in the study. Women with MD had a higher incidence of viral infections (19.2% vs. 22.7%; p=0.028), vegetative-vascular dystonia (26.2% vs. 29.7%; p=0.0466) and osteochondrosis (42.9% vs. 46.8%; p=0.0453). A subgroup of participants with verified MD demonstrated significantly more pronounced symptoms, such as irritability (4.9±3.5 vs. 4.6±3.4 points in the general group; p=0.0437), sleep disorders (4.4±2.3 vs. 4.2±2.3 points; p=0.0491), back pain (3.9±2.0 vs. 3.7±2.0; p=0.0405), and increased fatigue (4.6±2.3 vs. 4.4±2.3 points; p=0.0444). After the end of the course of therapy with fixed dose combination of magnesium citrate and pyridoxine, the sum of MDQ scores decreased from 46.0±12.7 to 29.2±15.1 points (p

Magnesium (Mg2+) is an essential mineral nutrient, necessary for many biochemical reactions in the human body, including energy metabolism, protein and DNA synthesis, maintenance of the electrical potential of nervous and cardiac tissues, control of blood glucose, and regulation of blood pressure. However, currently, the world population suffers from a severe problem because the consumption of Mg2+ in the diet is deficient and generalized in the populations. Mg2+ deficiency causes oxidative stress (OS) due to the increase in reactive oxygen species (ROS) that originate from mitochondrial dysfunction, activation of the renin-angiotensin-aldosterone system (RAAS), and abnormal regulation of calcium homeostasis. In addition, Mg2+ deficiency also causes inflammation by increasing the production of proinflammatory molecules such as interleukin (IL)-1, IL-6, and tumor necrosis factor-alpha (TNF-α), which in turn can exacerbate the production of ROS. The combination of inflammation and OS induced by Mg2+ deficiency increases the risk of developing chronic diseases. This review describes Mg2+ deficiency, its complications, and its relationship with OS and chronic inflammatory diseases. In addition, the importance of increasing the intake of Mg2+ throughout the world is highlighted.

Magnesium — intracellular cation — is important in many pathological processes including the pathogenesis of migraine. Magnesium deficiency in patients with migraine may be developed as a result of genetic inability to absorb magnesium and its excessive loss with stress because of low nutritional intake and a number of other reasons. Migraine magnesium deficiency contributes in changing the activity of NMDA-receptors, distribution of cortical depression hyperaggregation platelets, affects the function of serotonin receptors and metabolism of many neurotransmitters. Intravenous magnesium-containing drugs show high efficacy in the treatment and prevention of migraine.

Emerging evidence has shown that magnesium (Mg) was associated with type 2 diabetes while few focused on abnormal glucose metabolism during pregnancy. The study is aimed at investigating the association between longitudinal changes in plasma Mg during pregnancy and subsequent risk of gestational diabetes (GDM) and exploring the possible influence of iron supplementation on the changes of plasma Mg levels. One thousand seven hundred fifty-six pregnant women from Tongji Maternal and Child Health Cohort (TMCHC) were involved. Blood samples were collected at gestational weeks 17.0 ± 0.9 and later 26.2 ± 1.4. Plasma Mg was measured by inductively coupled plasma mass spectrometry (ICP-MS) with decline rates calculated. Information on general characteristics and iron supplementation was collected by questionnaires. Oral glucose tolerance test (OGTT) was conducted at 24–28 gestational weeks to diagnose GDM. Poisson regression with robust error variance was used to estimate relative risks (RR) of GDM. Median concentrations of plasma Mg were 0.69 mmol/L and 0.63 mmol/L respectively at two collections. The prevalence of hypomagnesemia at the first collection was 73% and associated with a 1.59 (95%CI: 1.07, 2.37) fold risk of GDM. Adjusted RRs were 1.74 (95%CI: 1.06, 2.83) and 2.44 (95%CI: 1.54, 3.85) for women with hypomagnesemia and followed more tertile (T2 and T3 vs. T1) of Mg decrement. Iron supplementation above 30 mg/day was found associated with more Mg decrement (25.5% and 27.5% in T2 and T3 vs. 19.5% in T1). In conclusion, hypomagnesemia during pregnancy is prevalent and associated with increased GDM risk, especially in women followed by more plasma Mg decrement during pregnancy. High-dose iron supplementation may involve more plasma Mg decrement. [ABSTRACT FROM AUTHOR]

Xylem anatomy may change in response to environmental or biotic stresses. Vascular occlusion, an anatomical modification of mature xylem, contributes to plant resistance and susceptibility to different stresses. In woody organs, xylem occlusions have been examined as part of the senescence process, but their presence and function in leaves remain obscure. In grapevine, many stresses are associated with premature leaf senescence inducing discolorations and scorched tissue in leaves. However, we still do not know whether the leaf senescence process follows the same sequence of physiological events and whether leaf xylem anatomy is affected in similar ways. In this study, we quantified vascular occlusions in midribs from leaves with symptoms of the grapevine disease esca, magnesium deficiency and autumn senescence. We found higher amounts of vascular occlusions in leaves with esca symptoms (in 27% of xylem vessels on average), whereas the leaves with other symptoms (as well as the asymptomatic controls) had far fewer occlusions (in 3% of vessels). Therefore, we assessed the relationship between xylem occlusions and esca leaf symptoms in four different countries (California in the USA, France, Italy and Spain) and eight different cultivars. We monitored the plants over the course of the growing season, confirming that vascular occlusions do not evolve with symptom age. Finally, we investigated the hydraulic integrity of leaf xylem vessels by optical visualization of embolism propagation during dehydration. We found that the occlusions lead to hydraulic dysfunction mainly in the peripheral veins compared with the midribs in esca symptomatic leaves. These results open new perspectives on the role of vascular occlusions during the leaf senescence process, highlighting the uniqueness of esca leaf symptoms and its consequence on leaf physiology. [ABSTRACT FROM AUTHOR]

Background Hypomagnesaemia with secondary hypocal-caemia (HSH) is a rare autosomal recessive disorder caused by pathogenic variants in TRPM6 , encoding the channel-kinase transient receptor potential melastatin type 6. Patients have very low serum magnesium (Mg2+) levels and suffer from muscle cramps and seizures. Despite genetic testing, a subgroup of HSH patients remains without a diagnosis. Methods In this study, two families with an HSH phenotype but negative for TRPM6 pathogenic variants were subjected to whole exome sequencing. Using a complementary combination of biochemical and functional analyses in overexpression systems and patient-derived fibroblasts, the effect of the TRPM7 -identified variants on Mg2+ transport was examined. Results For the first time, variants in TRPM7 were identified in two families as a potential cause for hereditary HSH. Patients suffer from seizures and muscle cramps due to magnesium deficiency and episodes of hypocalcaemia. In the first family, a splice site variant caused the incorporation of intron 1 sequences into the TRPM7 messenger RNA and generated a premature stop codon. As a consequence, patient-derived fibroblasts exhibit decreased cell growth. In the second family, a heterozygous missense variant in the pore domain resulted in decreased TRPM7 channel activity. Conclusions We establish TRPM7 as a prime candidate gene for autosomal dominant hypomagnesaemia and secondary hypocalcaemia. Screening of unresolved patients with hypocalcaemia and secondary hypocalcaemia may further establish TRPM7 pathogenic variants as a novel Mendelian disorder. [ABSTRACT FROM AUTHOR]

Interveinal chlorosis in old leaves is a common occurrence in citrus orchards in southern China. The present study investigates the 'Langfeng' navel orange (LF, Citrus sinensis) grafted onto a Trifoliate orange (TO, Poncirus trifoliata) rootstock, which exhibits healthy green leaves, and the 'Newhall' navel orange (NHE, C. sinensis) grafted onto TO, which has typical magnesium (Mg) deficiency-induced chlorosis. Chemical analysis of the rhizosphere soil revealed that the pH values were around 3.92 and that both Mg and calcium (Ca) were significantly deficient in the rhizosphere soil of both grafting combinations (LF/TO and NHE/TO). Furthermore, the chlorotic leaves of NHE/TO had significantly lower levels of Mg, Ca, and phosphorus (P), and the green leaves of NHE/TO had significantly lower levels of Mg and Ca compared to the green leaves of the LF/TO. This suggests that Mg deficiency may be the primary cause of chlorosis in NHE/TO. A greenhouse study using the same graft combinations showed that the LF/TO plants had better growth than the NHE/TO, possibly by promoting Mg uptake and/or improving Mg distribution to leaves, thereby increasing carbon dioxide (CO 2) assimilation and photosynthesis, optimizing carbohydrate distribution, and increasing plant biomass. This results in a phenotype that is tolerant to Mg deficiency. In conclusion, these findings suggest that the LF navel orange could be utilized in the development of new citrus varieties with improved Mg-use efficiency. • Interveinal chlorosis is common in southern China citrus orchards. • Study compares "Langfeng" navel orange (LF) on Trifoliate orange rootstock (TO) to "Newhall" navel orange (NHE) on TO. • Soil analysis showed Mg and Ca deficiencies and NHE/TO had lower levels of Mg, Ca, and P in chlorotic leaves. • Greenhouse study showed better growth in LF/TO plants, indicating improved Mg uptake and tolerance to Mg deficiency. • Findings suggest LF navel orange can be used in new citrus varieties with improved Mg-use efficiency. [ABSTRACT FROM AUTHOR]

Background/Purpose: To assess the relationship between gene expressions of the magnesium transporters and glucose parameters in pregnant women. Methods: A cohort of women without ongoing or prior medical illnesses was recruited at the start of an early singleton pregnancy. Expression levels of the magnesium transporters—SLC41A1, CNNM2, MAGT1, TRPM6, and TRPM7—were assessed in the peripheral leukocytes, while total calcium and magnesium were assessed in the serum between 10 and 13 weeks gestation. Glucose parameters were assessed between 24 and 28 weeks gestation using the 75 g oral glucose tolerance test. Results: A total of 208 patients were included in the study. The expressions of the magnesium transports were generally unrelated to age, body mass index (BMI), or serum levels of calcium and magnesium. The magnesium transporters were correlated with each other at baseline (correlation coefficients: 0.31 to 0.51). BMI was a strong predictor of fasting glucose levels, while both BMI and age were strong predictors of post-load glucose levels. The expression of TRPM7 was found to be predictive of 1-h post-load blood glucose after accounting for the effects of age and BMI (β = −0.196, p = 0.020). Conclusion: The increased maternal expression of the magnesium transporter TRPM7 may be associated with decreased glucose tolerance in pregnant women. In particular, the association between TRPM7 and 1-h post-load glucose levels was found to be independent of the effects of age and BMI. Future studies are needed to determine whether a mechanistic relationship can be demonstrated between TRPM7 and glucose metabolism.

Background: Vitamin D is synthesized in the skin or supplied. Cholecalciferol is hydroxylated in the liver to 25(OH) vitamin D [25D]. 25D is further hydroxylated in the kidney to 1,25(OH) vitamin D [1,25D]. Catabolism occurs by further hydroxylation. Magnesium is a cofactor of all involved hydroxylases. Aim: To investigate the association between renal function and serum magnesium levels, and the biologically active hormone 1,25D. Method: Anonymised serum values of 25D, 1,25D, magnesium and creatinine measured in an outpatient cohort over 2 years were analysed. Results: Renal function and magnesium level did not influence 25D values (r = − 0.144 and 0.030, respectively). Mean serum 1,25D values decreased from 106.5 ± 44.3 pmol/l in individuals with normal renal function to 51.7 ± 18.9 pmol/l in those with severe renal insufficiency (p < 0.01). A weak positive correlation was observed between 1,25D and eGFR (r = 0.317), and between 1,25D and serum magnesium (r = 0.217). Conclusion: Impaired renal function and low magnesium serum levels are slightly associated with low 1,25D concentrations. Measuring 25D, but not 1,25D, may overestimate the patient's vitamin D status. In patients with renal insufficiency adequate magnesium supply should be ensured. [ABSTRACT FROM AUTHOR]

Inadequate dietary magnesium (Mg) intake is a growing public health concern. Mg is critical for diverse metabolic processes including energy production, macromolecule biosynthesis, and electrolyte homeostasis. Inadequate free Mg2+ ion concentration ([Mg2+]) in the brain is associated with several neurological and behavioral disorders. Elevating [Mg2+]in the brain using oral Mg supplementation has proven to be challenging due to the tight regulation of Mg2+ transport to the brain. This study explored the effect of short-term moderate reduction in dietary Mg intake (87% of normal Mg diet for 30 days) on [Mg2+] in the cerebrospinal fluid (CSF) ([Mg2+]CSF) and red blood cells (RBCs) ([Mg2+]RBC) in adult male rats. In addition, we investigated the effectiveness of magnesium-rich blend of Swiss chard and buckwheat extracts (SC/BW extract) in increasing brain [Mg2+] compared to various Mg salts commonly used as dietary supplements. Animals were assigned to either normal or low Mg diet for 30 - 45 days. Following this, animals maintained on low Mg diet were supplemented with various Mg compounds. [Mg2+]CSF and [Mg2+]RBC were measured at baseline and following Mg administration. Anxiety-like behavior and cognitive function were also evaluated. The present study showed that a short-term and moderate reduction in Mg dietary intake results in a significant decline in [Mg2+]CSF and [Mg2+]RBC and the emergence of anxiety-like behavior in comparison to animals maintained on normal Mg diet. Supplementation with SC/BW extract significantly elevated [Mg2+]CSF and improved animal performance in the novel object recognition test in comparison with animals maintained on reduced Mg intake and supplemented with various Mg compounds. These observations indicate that brain [Mg2+] is more sensitive to a short-term and moderate reduction in Mg dietary intake than previously thought and emphasizes the importance of dietary Mg in replenishing brain Mg2+ reserves. [ABSTRACT FROM AUTHOR]

Aim:Parathyroidectomy causes significant changes in mineral metabolism in patients with primary hyperparathyroidism (PHPT). Hypomagnesemia may be seen after parathyroidectomy with unknown mechanisms. Our study aimed to evaluate the severity of hypomagnesemia and its correlation with clinical and biochemical variables after the surgery.Materials and Methods:A retrospective study was conducted in the patients with parathyroidectomy for PHPT between January 2017 and December 2020 in a single tertiary hospital. All consecutive patients with preoperative and postoperative magnesium levels (n=80) were included. Patients were divided into two groups according to the postoperative first-day serum magnesium levels: patients whose serum magnesium was 0.05). There were no significant differences in the preoperative serum calcium, adjusted calcium, and parathyroid hormone levels between the groups (p>0.05). Preoperative magnesium levels were significantly lower in the HypoMg group (p

Magnesium is an essential chemical element in human life. In the brain, it is physiologically responsible for a large number of processes involved in intracellular homeostasis, blood-brain barrier integrity, protein synthesis, neuronal proliferation, aging, and apoptosis. Considering that neurocritical care is a relatively new discipline in certain regions of the world and is an independent protective factor of neurological diseases in critical care, it is essential to disseminate basic concepts and utilities of tools that can positively impact the neurological disease burden. Magnesium and its use in neurocritical care are poorly understood. Therefore, this study aimed to review basic concepts regarding the physiology of magnesium in neurological dynamics, its role in the pathophysiology of neurological disorders, and the outcome of its use in the management of neurocritical illnesses.

Magnesium (Mg) is an essential macronutrient in plants and plays a critical role in numerous physiological processes. Therefore, Mg deficiency severely affects plant growth and crop production. This study aimed to investigate the effects of Mg deficiency on plant growth, biomass formation, Mg homeostasis, and photosynthesis of banana seedlings. After exhibiting deficiency symptoms, plants were sprayed with Mg to alleviate the deficiency. Mg deficiency severely reduced plant biomass and chlorophyll content. A significant reduction in maximum quantum yield (Fv/Fm), the effective quantum yield of PS II (ΦPSII), photochemical fluorescence quenching (qP), and non-photochemical fluorescence quenching (NPQ) was observed. In contrast, the light compensation point was almost doubled under Mg deficiency. This indicated damage to the photosynthetic apparatus and photoinhibition under Mg-deficiency treatment. The foliar application of Mg to Mg-deficient plants significantly increased the biomass and reversed the decrease in the biomass of leaves, pseudostem, and corms. More improvement was observed in the leaf area and biomass of the upper leaves. Foliar Mg also increased the Mg concentration in all tissues and enhanced chlorophyll content and chlorophyll fluorescence in leaves. In conclusion, foliar Mg application to Mg-deficient plants efficiently restored banana plant development and might be a practical approach to correcting Mg deficiency in the field. [ABSTRACT FROM AUTHOR]

Modern sugarcane cultivars were generated through interspecific crossing of the stress resistance Saccharum spontaneum and the high sugar content Saccharum officinarum which was domesticated from Saccharum robustum. Magnesium deficiency (MGD) is particularly prominent in tropical and subtropical regions where sugarcane is grown, but the response mechanism to MGD in sugarcane remains unknown. Physiological and transcriptomic analysis of the three founding Saccharum species under different magnesium (Mg) levels was performed. Our result showed that MGD decreased chlorophyll content and photosynthetic efficiency of three Saccharum species but led to increased starch in leaves and lignin content in roots of Saccharum robustum and Saccharum spontaneum. We identified 12,129, 11,306 and 12,178 differentially expressed genes (DEGs) of Saccharum officinarum, Saccharum robustum and Saccharum spontaneum, respectively. In Saccharum officinarum, MGD affected signal transduction by up-regulating the expression of xylan biosynthesis process-related genes. Saccharum robustum, responded to the MGD by regulating the expression of transcription and detoxification process-related genes. Saccharum spontaneum, avoids damage from MGD by regulating the expression of the signing transduction process and the transformation from growth and development to reproductive development. This novel repertoire of candidate genes related to MGD response in sugarcane will be helpful for engineering MGD tolerant varieties. [ABSTRACT FROM AUTHOR]

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Severe acute respiratory syndrome coronavirus type 2 (SARS‐CoV‐2) causes coronavirus disease 2019 (COVID‐19), characterised by high levels of inflammation and oxidative stress (OS). Oxidative stress induces oxidative damage to lipids, proteins, and DNA, causing tissue damage. Both inflammation and OS contribute to multi‐organ failure in severe cases. Magnesium (Mg2+) regulates many processes, including antioxidant and anti‐inflammatory responses, as well as the proper functioning of other micronutrients such as vitamin D. In addition, Mg2+ participates as a second signalling messenger in the activation of T cells. Therefore, Mg2+ deficiency can cause immunodeficiency, exaggerated acute inflammatory response, decreased antioxidant response, and OS. Supplementation with Mg2+ has an anti‐inflammatory response by reducing the levels of nuclear factor kappa B (NF‐κB), interleukin (IL) ‐6, and tumor necrosis factor alpha. Furthermore, Mg2+ supplementation improves mitochondrial function and increases the antioxidant glutathione (GSH) content, reducing OS. Therefore, Mg2+ supplementation is a potential way to reduce inflammation and OS, strengthening the immune system to manage COVID‐19. This narrative review will address Mg2+ deficiency associated with a worse disease prognosis, Mg2+ supplementation as a potent antioxidant and anti‐inflammatory therapy during and after COVID‐19 disease, and suggest that randomised controlled trials are indicated. [ABSTRACT FROM AUTHOR]