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Ayaz A, Zaman W, Radák Z, Gu Y. Green strength: The role of micronutrients in plant-based diets for athletic performance enhancement. Heliyon 2024; 10:e32803. [PMID: 38975163 PMCID: PMC11225853 DOI: 10.1016/j.heliyon.2024.e32803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/05/2024] [Accepted: 06/10/2024] [Indexed: 07/09/2024] Open
Abstract
This review examines the correlation between plant-based diets and athletic performance, with a specific emphasis on the vital aspect of optimizing micronutrients for athletes. In light of the increasing prevalence of plant-based nutrition among athletes due to its perceived advantages in terms of health, ethics, and the environment, this study investigates the ability of these diets to satisfy the demanding nutritional requirements essential for achieving optimal performance and facilitating recovery. The article emphasizes the significance of essential micronutrients such as iron, vitamin B12, calcium, vitamin D, zinc, and omega-3 fatty acids and also addressing the challenges with their absorption and bioavailability from plant sources. The review consolidates existing scientific knowledge to propose strategies for improving micronutrient consumption, comparing the effects of supplements against whole foods, and highlighting the significance of enhancing bioavailability. The proposal supports the implementation of personalized meal planning, with the assistance of sports nutritionists or dietitians, and is substantiated by case studies showcasing the success of plant-based athletes. Future research directions examine the long-term effects of plant-based diets on micronutrient status and athletic performance, as well as developing nutritional trends and technology. The review concludes that plant-based diets can meet athletes' nutritional demands and improve peak performance while aligning with personal and ethical values with strategic planning and professional guidance. This study intends to help athletes, coaches, and nutritionists understand plant-based nutrition for enhanced athletic performance.
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Affiliation(s)
- Asma Ayaz
- Faculty of Sports Science, Ningbo University, Ningbo, 315211, China
| | - Wajid Zaman
- Department of Life Sciences, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Zsolt Radák
- Research Institute of Sport Science, University of Physical Education, 1123, Budapest, Hungary
- Faculty of Sport Sciences, Waseda University, Tokorozawa, 359-1192, Japan
| | - Yaodong Gu
- Faculty of Sports Science, Ningbo University, Ningbo, 315211, China
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2
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Asohan J, Fakih HH, Das T, Sleiman HF. Control of the Assembly and Disassembly of Spherical Nucleic Acids Is Critical for Enhanced Gene Silencing. ACS NANO 2024; 18:3996-4007. [PMID: 38265027 DOI: 10.1021/acsnano.3c05940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Spherical nucleic acids─nanospheres with nucleic acids on their corona─have emerged as a promising class of nanocarriers, aiming to address the shortcomings of traditional nucleic therapeutics, namely, their poor stability, biodistribution, and cellular entry. By conjugating hydrophobic monomers to a growing nucleic acid strand in a sequence-defined manner, our group has developed self-assembled spherical nucleic acids (SaSNAs), for unaided, enhanced gene silencing. By virtue of their self-assembled nature, SaSNAs can disassemble under certain conditions in contrast to covalent or gold nanoparticle SNAs. Gene silencing involves multiple steps including cellular uptake, endosomal escape, and therapeutic cargo release. Whether assembly vs disassembly is advantageous to any of these steps has not been previously studied. In this work, we modify the DNA and hydrophobic portions of SaSNAs and examine their effects on stability, cellular uptake, and gene silencing. When the linkages between the hydrophobic units are changed from phosphate to phosphorothioate, we find that the SaSNAs disassemble better in endosomal conditions and exhibit more efficacious silencing, despite having cellular uptake similar to that of their phosphate counterparts. Thus, disassembly in the endolysosomal compartments is advantageous, facilitating the release of the nucleic acid cargo and the interactions between the hydrophobic units and endosomal lipids. We also find that SaSNAs partially disassemble in serum to bind albumin; the disassembled, albumin-bound strands are less efficient at cellular uptake and gene silencing than their assembled counterparts, which can engage scavenger receptors for internalization. When the DNA portion is cross-linked by G-quadruplex formation, disassembly decreases and cellular uptake significantly increases. However, this does not translate to greater gene silencing, again illustrating the need for disassembly of the SaSNAs when they are in the endosome. This work showcases the advantages of the dual nature of SaSNAs for gene silencing, requiring extracellular assembly and disassembly inside the cell compartments.
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Affiliation(s)
- Jathavan Asohan
- Department of Chemistry, McGill University, 801 Sherbrooke St West, Montreal, Québec Canada, H3A 0B8
| | - Hassan H Fakih
- Department of Chemistry, McGill University, 801 Sherbrooke St West, Montreal, Québec Canada, H3A 0B8
| | - Trishalina Das
- Department of Chemistry, McGill University, 801 Sherbrooke St West, Montreal, Québec Canada, H3A 0B8
| | - Hanadi F Sleiman
- Department of Chemistry, McGill University, 801 Sherbrooke St West, Montreal, Québec Canada, H3A 0B8
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Bulina NV, Eremina NV, Makarova SV, Borodulina IA, Vinokurova OB, Avakyan LA, Paramonova EV, Bystrov VS, Logutenko OA. Influence of Magnesium Source on the Mechanochemical Synthesis of Magnesium-Substituted Hydroxyapatite. MATERIALS (BASEL, SWITZERLAND) 2024; 17:416. [PMID: 38255584 PMCID: PMC10817307 DOI: 10.3390/ma17020416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/10/2024] [Accepted: 01/12/2024] [Indexed: 01/24/2024]
Abstract
Magnesium, as one of the most abundant cations in the human body, plays an important role in both physiological and pathological processes. In this study, it was shown that a promising biomedical material, Mg-substituted hydroxyapatite (Mg-HA), can be synthesized via a fast mechanochemical method. For this method, the nature of magnesium-containing carriers was shown to be important. When using magnesium oxide as a source of magnesium, the partial insertion of magnesium cations into the apatite structure occurs. In contrast, when magnesium hydroxide or monomagnesium phosphate is used, single-phase Mg-HA is formed. Both experimental and theoretical investigations showed that an increase in the Mg content leads to a decrease in the lattice parameters and unit cell volume of Mg-HA. Density functional theory calculations showed the high sensitivity of the lattice parameters to the crystallographic position of the calcium site substituted by magnesium. It was shown experimentally that the insertion of magnesium cations decreases the thermal stability of hydroxyapatite. The thermal decomposition of Mg-HA leads to the formation of a mixture of stoichiometric HA, magnesium oxide, and Mg-substituted tricalcium phosphate phases.
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Affiliation(s)
- Natalia V. Bulina
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Kutateladze Str. 18, 630090 Novosibirsk, Russia; (N.V.E.); (S.V.M.); (I.A.B.); (O.A.L.)
| | - Natalya V. Eremina
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Kutateladze Str. 18, 630090 Novosibirsk, Russia; (N.V.E.); (S.V.M.); (I.A.B.); (O.A.L.)
| | - Svetlana V. Makarova
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Kutateladze Str. 18, 630090 Novosibirsk, Russia; (N.V.E.); (S.V.M.); (I.A.B.); (O.A.L.)
| | - Irina A. Borodulina
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Kutateladze Str. 18, 630090 Novosibirsk, Russia; (N.V.E.); (S.V.M.); (I.A.B.); (O.A.L.)
| | - Olga B. Vinokurova
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Kutateladze Str. 18, 630090 Novosibirsk, Russia; (N.V.E.); (S.V.M.); (I.A.B.); (O.A.L.)
| | - Leon A. Avakyan
- Physics Faculty, Southern Federal University, 344090 Rostov-on-Don, Russia;
| | - Ekaterina V. Paramonova
- Institute of Mathematical Problems of Biology—Branch of Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, 142290 Pushchino, Russia; (E.V.P.); (V.S.B.)
| | - Vladimir S. Bystrov
- Institute of Mathematical Problems of Biology—Branch of Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, 142290 Pushchino, Russia; (E.V.P.); (V.S.B.)
| | - Olga A. Logutenko
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Kutateladze Str. 18, 630090 Novosibirsk, Russia; (N.V.E.); (S.V.M.); (I.A.B.); (O.A.L.)
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4
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Chen YS, Gehring K. New insights into the structure and function of CNNM proteins. FEBS J 2023; 290:5475-5495. [PMID: 37222397 DOI: 10.1111/febs.16872] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/17/2023] [Accepted: 05/23/2023] [Indexed: 05/25/2023]
Abstract
Magnesium (Mg2+ ) is the most abundant divalent cation in cells and plays key roles in almost all biological processes. CBS-pair domain divalent metal cation transport mediators (CNNMs) are a newly characterized class of Mg2+ transporters present throughout biology. Originally discovered in bacteria, there are four CNNM proteins in humans, which are involved in divalent cation transport, genetic diseases, and cancer. Eukaryotic CNNMs are composed of four domains: an extracellular domain, a transmembrane domain, a cystathionine-β-synthase (CBS)-pair domain, and a cyclic nucleotide-binding homology domain. The transmembrane and CBS-pair core are the defining features of CNNM proteins with over 20 000 protein sequences known from over 8000 species. Here, we review the structural and functional studies of eukaryotic and prokaryotic CNNMs that underlie our understanding of their regulation and mechanism of ion transport. Recent structures of prokaryotic CNNMs confirm the transmembrane domain mediates ion transport with the CBS-pair domain likely playing a regulatory role through binding divalent cations. Studies of mammalian CNNMs have identified new binding partners. These advances are driving progress in understanding this deeply conserved and widespread family of ion transporters.
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Affiliation(s)
- Yu Seby Chen
- Department of Biochemistry & Molecular Biology, Life Sciences Institute, The University of British Columbia, Vancouver, BC, Canada
| | - Kalle Gehring
- Department of Biochemistry & Centre de Recherche en Biologie Structurale, McGill University, Montreal, QC, Canada
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Radhakrishnan A, Chauhan I, Thakur J, Azad R, Dhadwal M. Hypomagnesemia in Post Thyroidectomy Patient: An Underestimated Entity. Indian J Otolaryngol Head Neck Surg 2023; 75:1986-1991. [PMID: 37636693 PMCID: PMC10447295 DOI: 10.1007/s12070-023-03777-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 04/04/2023] [Indexed: 08/29/2023] Open
Abstract
BACKGROUND In post thyroidectomy patients hypocalcemia is one of the known complication many factors play important role in calcium hemostasis and magnesium is one among them. So this study was conducted to assess the prevalence of hypomagnesemia in post thyroidectomy patients and its relationship with calcium homeostasis. MATERIALS AND METHODS A prospective observational study was conducted among 31 patients who underwent total thyroidectomy or completion thyroidectomy over a period of 1 year. Patient's pre-operative and post-operative day 1 and day 2 serum calcium, magnesium and iPTH was recorded and their correlation was analyzed using SPSS 21.0. and p value of < 0.05 was taken as statistically significant. Calcium supplementation was only given to patients who developed symptomatic hypocalcemia in postoperative period. RESULTS In our study hypomagnesemia in post thyroidectomy patients on post -operative day 1 and day 2 was 71% and 74.2% respectively. Hypocalcemia was seen in 64.5% of patients on post-operative day 1 and 96.8% on post-operative day 2. Symptomatic hypocalcemia was seen in 22.6% of study population on post-operative day 1 and 22.6% of patients on post-operative day 2 while 25.8% patients newly developed symptoms of hypocalcemia. Statistically significant correlation was found between calcium and magnesium levels in post op day 1(< 0.001) and post op day 2(< 0.004) and also statistically significant correlation was found between post-operative day 1 magnesium levels and post-operative day 2 calcium levels (0.001). Symptomatic hypocalcemia was more commonly seen among patients who had hypomagnesemia along with hypocalcemia though it failed to show any statistical significance. CONCLUSION Post thyroidectomy hypomagnesemia is frequent event and magnesium acts as an independent risk factor in development of post thyroidectomy hypocalcemia. Hypomagnesemia tends to alleviate symptomatic hypocalcemia in post thyroidectomy patients. So the role of magnesium correction to alleviate severe hypocalcemia needs to be further studied.
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Affiliation(s)
| | - Ishan Chauhan
- Department of ENT-Head and Neck Surgery IGMC, Shimla, Himachal Pradesh India
| | - J.S Thakur
- Department of ENT-Head and Neck Surgery IGMC, Shimla, Himachal Pradesh India
| | - Ramesh Azad
- Department of ENT-Head and Neck Surgery IGMC, Shimla, Himachal Pradesh India
| | - Madhuri Dhadwal
- Department of ENT-Head and Neck Surgery IGMC, Shimla, Himachal Pradesh India
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Antunes IC, Bexiga R, Pinto C, Roseiro LC, Quaresma MAG. Cow's Milk in Human Nutrition and the Emergence of Plant-Based Milk Alternatives. Foods 2022; 12:99. [PMID: 36613315 PMCID: PMC9818304 DOI: 10.3390/foods12010099] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 10/21/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Cow's milk is considered a complete food, providing high-quality protein and essential micronutrients, including vitamins and minerals. For medical reasons or as a lifestyle choice, consumers are replacing cow's milk with plant-based milk alternatives (PBMA); some perceive them as healthier alternatives to cow's milk due to their low saturated fatty acid content and no cholesterol content. However, the nutritional composition of PBMA is quite variable between different types and even within, which makes a comparison with cow's milk a complex issue. Furthermore, the consumption of PBMA has been associated with the development of some diseases in infants and children. Meanwhile, the consumption of cow's milk in human health is a controversial issue since it has been associated with a favorable effect in some diseases (such as obesity, type 2 diabetes, and Alzheimer's) and a negative effect in others (such as prostate cancer risk and Parkinson's disease); while in some diseases, there is no consensus in the cow's milk consumption effect. The aim of this review is to make a nutritional comparison of cow's milk with PBMA and to clarify the potential health issues related to their consumption.
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Affiliation(s)
- I. C. Antunes
- CIISA–Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisbon, Portugal
| | - R. Bexiga
- CIISA–Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisbon, Portugal
| | - C. Pinto
- Faculdade de Ciências Agrárias e do Ambiente da Universidade dos Açores, Rua Capitão João d’Ávila, 9700-042 Angra do Heroísmo, Portugal
| | - L. C. Roseiro
- Food Technology and Safety Division, National Institute for Agricultural and Veterinary Research (INIAV, IP), Quinta do Marquês, 2780-157 Oeiras, Portugal
| | - M. A. G. Quaresma
- CIISA–Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, 1300-477 Lisbon, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisbon, Portugal
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Makshakova ON, Gafurov MR, Goldberg MA. The Mutual Incorporation of Mg 2+ and CO 32- into Hydroxyapatite: A DFT Study. MATERIALS (BASEL, SWITZERLAND) 2022; 15:9046. [PMID: 36556852 PMCID: PMC9781354 DOI: 10.3390/ma15249046] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/10/2022] [Accepted: 12/15/2022] [Indexed: 06/17/2023]
Abstract
Hydroxyapatite (HA) with a stoichiometry composition of Ca10(PO4)6(OH)2 is widely applied for various biomedical issues, first of all for bone defect substitution, as a catalyst, and as an adsorbent for soil and water purification. The incorporation of foreign ions changes the acid-base relation, microstructure, porosity, and other properties of the HA materials. Here, we report the results of calculations of the density functional theory and analyze the possibility of two foreign ions, CO32- and Mg2+, to be co-localized in the HA structure. The Na+ was taken into account for charge balance preservation. The analysis revealed the favorable incorporation of CO32- and Mg2+ as a complex when they interact with each other. The energy gain over the sole ion incorporation was pronounced when CO32- occupied the A position and Mg2+ was in the Ca(2) position and amounted to -0.31 eV. In the most energy-favorable complex, the distance between Mg2+ and the O atom of carbonate ion decreased compared to Mg…O distances to the surrounding phosphate or hydroxide ions, and amounted to 1.98 Å. The theoretical calculations agree well with the experimental data reported earlier. Understating the structure-properties relationship in HA materials varying in terms of composition, stoichiometry, and morphology paves the way to rational designs of efficient bio-based catalytic systems.
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Affiliation(s)
- Olga N. Makshakova
- Kazan Institute of Biochemistry and Biophysics, Federal Research Center Kazan Scientific Center of Russian Academy of Sciences, 420111 Kazan, Russia
| | - Marat R. Gafurov
- Institute of Physics, Kazan Federal University, 420008 Kazan, Russia
| | - Margarita A. Goldberg
- A.A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334 Moscow, Russia
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Hubner A, Canisso IF, Peixoto PM, Coelho WM, Ribeiro L, Aldridge BM, Menta P, Machado VS, Lima FS. Characterization of metabolic profile, health, milk production, and reproductive outcomes of dairy cows diagnosed with concurrent hyperketonemia and hypoglycemia. J Dairy Sci 2022; 105:9054-9069. [PMID: 36114055 DOI: 10.3168/jds.2021-21327] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 06/19/2022] [Indexed: 11/19/2022]
Abstract
The objective of this prospective cohort study was to characterize the metabolic profile, health, milk production, and reproductive outcomes of cows diagnosed with hyperketonemia (HK; β-hydroxybutyrate ≥1.2 mmol/L), hypoglycemia (HG; glucose ≤2.2 mmol/L), or concurrent HK and HG (HKHG). Glucose and β-hydroxybutyrate concentrations in whole blood were assessed using a handheld device (Precision Xtra, Abbott Laboratories) in lactating dairy cows (n = 2,418) between 3 and 9 d postpartum. Cows were categorized into 4 groups: no HK or HG (healthy; Norm = 1,821), HK only (HK = 232), HG only (HG = 161), and concurrent HK and HG (HKHG = 204). Subsequent milk production, along with health and reproductive outcomes, as recorded by farm personnel, were analyzed according to metabolic category. Serum collected on the day of cow-side diagnosis of hyperketonemia and hypoglycemia was evaluated for total calcium (tCa), magnesium (Mg), nonesterified fatty acids (NEFA), triglycerides (TG), and urea using an automated chemistry analyzer (Randox Daytona; Randox Laboratories Ltd.). Statistical analysis was carried out using SAS version 9.4 (SAS Institute Inc.). Hyperketonemia in multiparous cows was associated with greater incidence of metabolic abnormalities (hypomagnesemia, hypocalcemia, and elevated NEFA and urea). Hyperketonemia in primiparous and multiparous cows led to increased adverse health events (culling rate, retained fetal membranes, puerperal metritis, clinical ketosis, left displaced abomasum) relative to Norm cows. Multiparous cows with HKHG had fewer metabolic disturbances (hypomagnesemia, hypocalcemia, elevated NEFA) than HK cows. Cows with HKHG had an increased incidence of clinical ketosis and left displaced abomasum relative to Norm cows. Cows with HG had similar metabolic profiles to Norm cows and had lower incidence of retained fetal membranes and puerperal metritis than cows with HK. Multiparous cows with HG produced more milk than Norm cows from wk 10 to 20, whereas multiparous cows with HK produced less milk than Norm cows. For primiparous cows, HK did not have a negative effect on milk production compared with Norm cows.
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Affiliation(s)
- A Hubner
- Department of Veterinary Clinical Medicine, University of Illinois, Urbana 61802; Department of Comparative Biosciences, University of Illinois, Urbana 61802
| | - I F Canisso
- Department of Veterinary Clinical Medicine, University of Illinois, Urbana 61802; Department of Comparative Biosciences, University of Illinois, Urbana 61802.
| | - P M Peixoto
- Department of Veterinary Clinical Medicine, University of Illinois, Urbana 61802
| | - W M Coelho
- Department of Veterinary Clinical Medicine, University of Illinois, Urbana 61802
| | - L Ribeiro
- Department of Veterinary Clinical Medicine, University of Illinois, Urbana 61802
| | - B M Aldridge
- Department of Veterinary Clinical Medicine, University of Illinois, Urbana 61802
| | - P Menta
- Department of Veterinary Science, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock 79409
| | - V S Machado
- Department of Veterinary Science, College of Agricultural Sciences and Natural Resources, Texas Tech University, Lubbock 79409
| | - F S Lima
- Department of Population Health and Reproduction, University of California, Davis 95616.
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Lu J, Li H, Wang S. The kidney reabsorption-related Magnesium Depletion Score is associated with increased likelihood of abdominal aortic calcification among US adults. Nephrol Dial Transplant 2022; 38:1421-1429. [PMID: 35881469 DOI: 10.1093/ndt/gfac218] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Kidney reabsorption has a vital role in magnesium homeostasis. This study aimed to determine the relationship between the kidney reabsorption-related magnesium depletion score (MDS) and abdominal aortic calcification (AAC). METHODS We obtained the data of 2640 individuals from the National Health and Nutrition Examination Survey (NHANES) database and analyzed the relationship between MDS and AAC scores. MDS is a scoring system developed to predict status of magnesium deficiency that fully considered the pathophysiological factors influencing the kidneys' reabsorption capability. AAC was quantified by the Kauppila score system based on dual-energy X-ray absorptiometry. We performed stratified analysis and multiple equation regression analysis. R and EmpowerStats were used for data analysis. RESULTS A total of 2640 participants were included with the mean AAC score of 1.47 ± 0.07. Participants in higher MDS tended to have higher AAC scores (MDS scored 0: 0.75 (0.56, 0.93), MDS scored 1: 1.02 (0.84, 1.21), MDS scored 2: 2.34 (1.80, 2.87), MDS scored 3: 3.19 (2.46, 3.92), MDS ≥ 4: 4.99 (3.49, 6.49)). Compared with those in the lowest MDS scored 0, the highest subgroup (MDS ≥ 4) was associated with a higher AAC score (β = 4.24, 95% CI: 2.78-5.70, p < 0.001), and the association was not altered (β = 1.81, 95% CI: 0.54-3.09, p = 0.002) after adjusting for numerous covariates. Subgroup analyses showed that stronger associations between MDS and AAC score were detected in adults with lower levels of magnesium intake and older (all p for interaction < 0.05). CONCLUSIONS The MDS is a promising tool for identifying individuals with magnesium deficiency status who may benefit from dietary magnesium supplementation to reduce the risks of AAC.
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Affiliation(s)
- Jian Lu
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Han Li
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Shixiang Wang
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
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10
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The effects of drinking bicarbonate-rich mineral water in calcium oxalate stone formers: an open label prospective randomized controlled study in an Asian cohort. Int Urol Nephrol 2022; 54:2133-2140. [PMID: 35781772 DOI: 10.1007/s11255-022-03256-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 05/14/2022] [Indexed: 10/17/2022]
Abstract
PURPOSE To examine the effects of drinking bicarbonate-rich mineral water in patients with calcium oxalate stones. MATERIALS AND METHODS This was an open label prospective randomized controlled study comparing the effects of a bicarbonate-rich mineral water versus plain water on urine biochemistry in patients with calcium oxalate stones. The mineral water group were instructed to consume 1.25 L of mineral water per day at meal times, and supplemented by plain water. Their total intake was up to 3 L/day. Control group consumed only plain water up to 3 L/day. 24 h urine analyses were performed at baseline, 1, 4, 8 and 12 weeks after starting protocol. RESULTS 58 patients were recruited for the study. 51 patients were included in the final analysis. Baseline data were comparable between the two groups. Over the course of 12 weeks, compared to patients drinking plain water, those drinking mineral water had higher overall urinary volume (difference = 644.0 ml/24 h, 95% CI = (206.7, 1081.3)), higher overall urinary magnesium (difference = 1.894 mmol/24 h, 95% CI = (1.006, 2.782)), and pH (difference = 0.477, 95% CI = (0.149, 0.804)). However, there was no difference in urinary oxalate and Tiselius index. Mineral water group had net increase of urinary citrate (at each study point compared to baseline) which was sustained until week 12, whereas plain water group showed no significant change. CONCLUSIONS Drinking bicarbonate-rich mineral water in calcium oxalate stone formers increased stone inhibitors such as magnesium, citrate and moderate degree of urinary alkalinization compared to patients drinking plain water, but it did not alter Tiselius index or urinary oxalate after 12 weeks.
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11
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Akyüz O, Gücün M, Demirci R, Celik M. Relationship Between Serum Magnesium Level and Insulin Resistance in Turkey Non-obese Adult Population. Biol Trace Elem Res 2022; 200:3070-3077. [PMID: 34537919 DOI: 10.1007/s12011-021-02922-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 09/08/2021] [Indexed: 11/27/2022]
Abstract
The homeostasis model assessment of insulin resistance (HOMA-IR) is widely used in clinical practice to estimate insulin resistance. In particular, magnesium (Mg) is an extensively studied mineral that has been shown to function in the management of hyperglycemia and insulin resistance (IR) action. The pathophysiology of IR in non-obese patients has not been clearly demonstrated. From this point of view, we aimed to investigate the relationship between serum Mg level and IR in non-obese patients. We analyzed 957 patients who are not obese and estimated glomerular filtration rate (e-GFR) ≥ 60 mL/min/1.73 m2. Patients were divided into two groups, with and without IR. The results of the IR detected group (HOMA-IR ≥ 2.5, n = 544) and the IR undetected group (HOMA-IR < 2.5, n = 413) were compared. The median Mg value of the patients was 1.76 [0.21] mg/dL. A statistically significant difference was observed between the two groups regarding serum Mg levels (p = 0.043). A negative correlation was found between the HOMA-IR index and serum Mg levels among patients (r = - 0.064, p = 0.049). Multivariable logistic regression analysis revealed that serum Mg level (p = 0.039, odds ratio [OR] = 0.770[95%CI: [0.917-0.989]) was independent risk factors for IR. HOMA-IR increases as the Mg level decreases in advanced ages without obesity, especially in men with low e-GFR.
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Affiliation(s)
- Okan Akyüz
- Department of Nephrology, University of Health Sciences, Kartal Kosuyolu Heart and Research Hospital, Denizer Street Cevizli No: 2 Cevizli, 34865, Kartal, Istanbul, Turkey.
| | - Murat Gücün
- Department of Nephrology, University of Health Sciences, Kartal Kosuyolu Heart and Research Hospital, Denizer Street Cevizli No: 2 Cevizli, 34865, Kartal, Istanbul, Turkey
| | - Recep Demirci
- Department of Nephrology, University of Health Sciences Kanuni Sultan Suleyman Training and Research Hospital, Istanbul, Turkey
| | - Mehmet Celik
- Department of Endocrinology and Metabolism, Trakya University, Edirne, Turkey
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12
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Baloch FS, Nadeem MA, Sönmez F, Habyarimana E, Mustafa Z, Karaköy T, Cömertpay G, Alsaleh A, Çiftçi V, Sun S, Chung G, Chung YS. Magnesium- a Forgotten Element: Phenotypic Variation and Genome Wide Association Study in Turkish Common Bean Germplasm. Front Genet 2022; 13:848663. [PMID: 35586571 PMCID: PMC9108430 DOI: 10.3389/fgene.2022.848663] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 02/21/2022] [Indexed: 11/16/2022] Open
Abstract
Magnesium (Mg) is the fourth most abundant element in the human body and plays the role of cofactor for more than 300 enzymatic reactions. In plants, Mg is involved in various key physiological and biochemical processes like growth, development, photophosphorylation, chlorophyll formation, protein synthesis, and resistance to biotic and abiotic stresses. Keeping in view the importance of this element, the present investigation aimed to explore the Mg contents diversity in the seeds of Turkish common bean germplasm and to identify the genomic regions associated with this element. A total of 183 common bean accessions collected from 19 provinces of Turkey were used as plant material. Field experiments were conducted according to an augmented block design during 2018 in two provinces of Turkey, and six commercial cultivars were used as a control group. Analysis of variance depicted that Mg concentration among common bean accessions was statistically significant (p < 0.05) within each environment, however genotype × environment interaction was non-significant. A moderate level (0.60) of heritability was found in this study. Overall mean Mg contents for both environments varied from 0.33 for Nigde-Dermasyon to 1.52 mg kg−1 for Nigde-Derinkuyu landraces, while gross mean Mg contents were 0.92 mg kg−1. At the province level, landraces from Bolu were rich while the landraces from Bitlis were poor in seed Mg contents respectively. The cluster constellation plot divided the studied germplasm into two populations on the basis of their Mg contents. Marker-trait association was performed using a mixed linear model (Q + K) with a total of 7,900 DArTseq markers. A total of six markers present on various chromosomes (two at Pv01, and one marker at each chromosome i.e., Pv03, Pv07, Pv08, Pv11) showed statistically significant association for seed Mg contents. Among these identified markers, the DArT-3367607 marker present on chromosome Pv03 contributed to maximum phenotypic variation (7.5%). Additionally, this marker was found within a narrow region of previously reported markers. We are confident that the results of this study will contribute significantly to start common bean breeding activities using marker assisted selection regarding improved Mg contents.
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Affiliation(s)
- Faheem Shehzad Baloch
- Faculty of Agricultural Sciences and Technologies, Sivas University of Science and Technology, Sivas, Turkey
- *Correspondence: Faheem Shehzad Baloch, ; Yong Suk Chung,
| | - Muhammad Azhar Nadeem
- Faculty of Agricultural Sciences and Technologies, Sivas University of Science and Technology, Sivas, Turkey
| | - Ferit Sönmez
- Department of Seed Science and Technology, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Ephrem Habyarimana
- International Crops Research Institute for the Semi-Arid Tropics, Patancheru, India
| | - Zemran Mustafa
- Faculty of Agricultural Sciences and Technologies, Sivas University of Science and Technology, Sivas, Turkey
| | - Tolga Karaköy
- Faculty of Agricultural Sciences and Technologies, Sivas University of Science and Technology, Sivas, Turkey
| | - Gönül Cömertpay
- Eastern Mediterranean Agricultural Research Institute, Adana, Turkey
| | - Ahmad Alsaleh
- Molecular Genetic Laboratory, Science and Technology Application and Research Center, Institute for Hemp Research, Yozgat Bozok University, Yozgat, Turkey
| | - Vahdettin Çiftçi
- Department of Field Crops, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu, Turkey
| | - Sangmi Sun
- Department of Biotechnology, Chonnam National University, Chonnam, South Korea
| | - Gyuhwa Chung
- Department of Biotechnology, Chonnam National University, Chonnam, South Korea
| | - Yong Suk Chung
- Department of Plant Resources and Environment, Jeju National University, Jeju, South Korea
- *Correspondence: Faheem Shehzad Baloch, ; Yong Suk Chung,
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13
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Johansen NT, Bonaccorsi M, Bengtsen T, Larsen AH, Tidemand FG, Pedersen MC, Huda P, Berndtsson J, Darwish T, Yepuri NR, Martel A, Pomorski TG, Bertarello A, Sansom MS, Rapp M, Crehuet R, Schubeis T, Lindorff-Larsen K, Pintacuda G, Arleth L. Mg 2+-dependent conformational equilibria in CorA and an integrated view on transport regulation. eLife 2022; 11:71887. [PMID: 35129435 PMCID: PMC8865849 DOI: 10.7554/elife.71887] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 02/04/2022] [Indexed: 11/13/2022] Open
Abstract
The CorA family of proteins regulates the homeostasis of divalent metal ions in many bacteria, archaea, and eukaryotic mitochondria, making it an important target in the investigation of the mechanisms of transport and its functional regulation. Although numerous structures of open and closed channels are now available for the CorA family, the mechanism of the transport regulation remains elusive. Here, we investigated the conformational distribution and associated dynamic behaviour of the pentameric Mg2+ channel CorA at room temperature using small-angle neutron scattering (SANS) in combination with molecular dynamics (MD) simulations and solid-state nuclear magnetic resonance spectroscopy (NMR). We find that neither the Mg2+-bound closed structure nor the Mg2+-free open forms are sufficient to explain the average conformation of CorA. Our data support the presence of conformational equilibria between multiple states, and we further find a variation in the behaviour of the backbone dynamics with and without Mg2+. We propose that CorA must be in a dynamic equilibrium between different non-conducting states, both symmetric and asymmetric, regardless of bound Mg2+ but that conducting states become more populated in Mg2+-free conditions. These properties are regulated by backbone dynamics and are key to understanding the functional regulation of CorA.
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Affiliation(s)
| | - Marta Bonaccorsi
- Centre de RMN à Très hauts Champs de Lyon, UMR 5280, CNRS, University of Lyon, Villeurbanne, France
| | - Tone Bengtsen
- Department of Biology, University of Copenhagen, Copenhagen N, Denmark
| | - Andreas Haahr Larsen
- Condensed Matter Physics, Niels Bohr Institute, University of Copenhagen, Copenhagen E, Denmark
| | | | - Martin Cramer Pedersen
- Condensed Matter Physics, Niels Bohr Institute, University of Copenhagen, Copenhagen E, Denmark
| | - Pie Huda
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, Brisbane, Australia
| | - Jens Berndtsson
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Tamim Darwish
- National Deuteration Facility, Australian Nuclear Science and Technology Organization, Lucas Heights, Australia
| | - Nageshewar Rao Yepuri
- National Deuteration Facility, Australian Nuclear Science and Technology Organization, Lucas Heights, Australia
| | | | - Thomas Günther Pomorski
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Andrea Bertarello
- Centre de RMN à Très hauts Champs de Lyon, UMR 5280, CNRS, University of Lyon, Villeurbanne, France
| | - Mark Sp Sansom
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
| | - Mikaela Rapp
- Department of Biochemistry and Biophysics, Stockholm University, Stockholm, Sweden
| | - Ramon Crehuet
- Department of Biology, University of Copenhagen, Copenhagen N, Denmark
| | - Tobias Schubeis
- Centre de RMN à Très hauts Champs de Lyon, UMR 5280, CNRS, University of Lyon, Villeurbanne, France
| | | | - Guido Pintacuda
- Centre de RMN à Très hauts Champs de Lyon, UMR 5280, CNRS, University of Lyon, Villeurbanne, France
| | - Lise Arleth
- Condensed Matter Physics, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
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14
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Montazeri M, Esfahanizadeh N, Nourani M, Harandi M. Use of bioactive glass doped with magnesium or strontium for bone regeneration: A rabbit critical-size calvarial defects study. Dent Res J (Isfahan) 2022; 19:18. [PMID: 35308452 PMCID: PMC8927959 DOI: 10.4103/1735-3327.338781] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/08/2021] [Accepted: 09/30/2021] [Indexed: 11/04/2022] Open
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15
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Ma Y, Talha M, Wang Q, Zhou N, Li Z, Lin Y. A multifunctional coating with modified calcium phosphate/chitosan for biodegradable magnesium alloys of implants. NEW J CHEM 2022; 46:4436-4448. [DOI: 10.1039/d2nj00147k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
A novel CaP/CTS coating was prepared for enhanced corrosion resistance, cytocompatibility and antibacterial property of the biodegradable Mg alloys.
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Affiliation(s)
- Yucong Ma
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, P. R. China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, Sichuan, P. R. China
| | - Mohd Talha
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, P. R. China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, Sichuan, P. R. China
| | - Qi Wang
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, P. R. China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, Sichuan, P. R. China
| | - Niantao Zhou
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, Sichuan, P. R. China
| | - Zhonghui Li
- School of Petroleum Engineering, Yangtze University, Wuhan, 434023, Hubei, China
| | - Yuanhua Lin
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, P. R. China
- School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, Sichuan, P. R. China
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16
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An Assessment of Selected Nutritional, Bioactive, Thermal and Technological Properties of Brown and Red Irish Seaweed Species. Foods 2021; 10:foods10112784. [PMID: 34829067 PMCID: PMC8625894 DOI: 10.3390/foods10112784] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 12/13/2022] Open
Abstract
Irish edible brown (Himanthalia elongata—sea spaghetti, Alaria esculenta—Irish wakame) and red seaweeds (Palmaria palmata—dulse, Porphyra umbilicalis—nori) were assessed for nutritional (proximate composition; salt; pH; amino acid; mineral and dietary fibre contents); bioactive (total phenolic content (TPC) and in vitro antioxidant activity (DPPH and FRAP)); thermal (thermogravimetric analysis (TGA)); and technological (water holding capacity (WHC), oil holding capacity (OHC) and swelling capacity (SC)) properties. Red seaweeds had higher (p < 0.05) protein levels, whereas brown seaweeds possessed higher (p < 0.05) moisture, ash, insoluble and total dietary fibre contents. Nori had the lowest (p < 0.05) salt level. Seaweed fat levels ranged from 1 to 2% DW. Aspartic and glutamic acids were the most abundant amino acids. The total amino acid (TAA) content ranged from 4.44 to 31.80%. Seaweeds contained numerous macro (e.g., Na) and trace minerals. The TPC, DPPH and FRAP activities followed the order: sea spaghetti ≥ nori > Irish wakame > dulse (p < 0.05). TGA indicated maximum weight loss at 250 °C. Dulse had the lowest (p < 0.05) WHC and SC properties. Dulse and nori had higher (p < 0.05) OHC than the brown seaweeds. Results demonstrate the potential of seaweeds as functional food product ingredients.
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17
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Fengler VH, Macheiner T, Goessler W, Ratzer M, Haybaeck J, Sargsyan K. Hepatic Response of Magnesium-Restricted Wild Type Mice. Metabolites 2021; 11:metabo11110762. [PMID: 34822420 PMCID: PMC8625093 DOI: 10.3390/metabo11110762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/26/2021] [Accepted: 11/03/2021] [Indexed: 11/16/2022] Open
Abstract
Magnesium-deficiency is implicated in many metabolic disorders, e.g., type 2 diabetes and metabolic syndrome, representing risk factors for non-alcoholic fatty liver disease (NAFLD). This study aims to investigate the contribution of magnesium-restriction to the development of NAFLD. Magnesium-deficiency was induced in C57BL/6 mice by feeding a magnesium-deficient-diet. Metabolic markers as well as markers of inflammation and liver function were assessed. Furthermore, liver tissue was examined histopathologically and compared with specimens from high-fat-diet fed and control mice. Finally, the hepatic inflammatory response was quantified by determining hepatic IL-6, TNFα, and MCP-1. Magnesium-restriction resulted in at least a 2-fold significant reduction of serum magnesium levels compared to the high-fat-diet fed and control mice, whereas the hepatic magnesium content was decreased due to high-fat-diet feeding. No changes in metabolic markers in magnesium-restricted mice were observed, while the cholesterol content was elevated in high-fat-diet fed mice. Magnesium-restricted mice additionally featured inflammation and enlarged hepatocytes in liver histology. Furthermore, magnesium-restricted and high-fat-diet fed mice exhibited elevated hepatic TNFα levels compared to control mice. Accordingly, our data suggest that magnesium is involved in hepatic inflammatory processes and hepatocyte enlargement, key histological features of human NAFLD, and may therefore contribute to development and progression of the disease.
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Affiliation(s)
- Vera H. Fengler
- Biobank Graz, Medical University of Graz, 8036 Graz, Austria;
- Institute of Molecular Biosciences, University of Graz, 8010 Graz, Austria
| | - Tanja Macheiner
- International Biobank and Education, Medical University of Graz, 8036 Graz, Austria;
| | - Walter Goessler
- Institute of Chemistry, University of Graz, 8010 Graz, Austria;
| | - Maria Ratzer
- Institute for Biomedicine and Health Sciences, Joanneum Research, 8010 Graz, Austria;
| | - Johannes Haybaeck
- Department of Pathology, Neuropathology and Molecular Pathology, Medical University of Innsbruck, 6020 Innsbruck, Austria;
- Diagnostic & Research Center for Molecular BioMedicine, Institute of Pathology, Medical University of Graz, 8036 Graz, Austria
| | - Karine Sargsyan
- International Biobank and Education, Medical University of Graz, 8036 Graz, Austria;
- Correspondence: ; Tel.: +43-316-385-72718
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18
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Kundal SV, Lai Shum J, Emeasoba EU, Marcelin M, Shetty VS, Huang T. Seizure and delirium secondary to carboplatin and pantoprazole therapy-induced hypomagnesemia in a cancer patient. Clin Case Rep 2021; 9:e04572. [PMID: 34466238 PMCID: PMC8382599 DOI: 10.1002/ccr3.4572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/03/2021] [Accepted: 06/16/2021] [Indexed: 11/11/2022] Open
Abstract
Active surveillance and treatment of hypomagnesemia along with strict avoidance of concurrent offending agents is essential to prevent its grave clinical consequences among patients on carboplatin therapy.
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Affiliation(s)
- Sanchit V. Kundal
- Department of Internal MedicineMaimonides Medical CenterBrooklynNYUSA
| | - Janet Lai Shum
- Department of Internal MedicineMaimonides Medical CenterBrooklynNYUSA
| | | | - Michael Marcelin
- Department of Internal MedicineMaimonides Medical CenterBrooklynNYUSA
| | - Vijay S. Shetty
- Department of Internal MedicineMaimonides Medical CenterBrooklynNYUSA
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19
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Hurle K, Oliveira J, Reis R, Pina S, Goetz-Neunhoeffer F. Ion-doped Brushite Cements for Bone Regeneration. Acta Biomater 2021; 123:51-71. [PMID: 33454382 DOI: 10.1016/j.actbio.2021.01.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/11/2020] [Accepted: 01/05/2021] [Indexed: 12/15/2022]
Abstract
Decades of research in orthopaedics has culminated in the quest for formidable yet resorbable biomaterials using bioactive materials. Brushite cements most salient features embrace high biocompatibility, bioresorbability, osteoconductivity, self-setting characteristics, handling, and injectability properties. Such type of materials is also effectively applied as drug delivery systems. However, brushite cements possess limited mechanical strength and fast setting times. By means of incorporating bioactive ions, which are incredibly promising in directing cell fate when incorporated within biomaterials, it can yield biomaterials with superior mechanical properties. Therefore, it is a key to develop fine-tuned regenerative medicine therapeutics. A comprehensive overview of the current accomplishments of ion-doped brushite cements for bone tissue repair and regeneration is provided herein. The role of ionic substitution on the cements physicochemical properties, such as structural, setting time, hydration products, injectability, mechanical behaviour and ion release is discussed. Cell-material interactions, osteogenesis, angiogenesis, and antibacterial activity of the ion-doped cements, as well as its potential use as drug delivery carriers are also presented. STATEMENT OF SIGNIFICANCE: Ion-doped brushite cements have unbolted a new era in orthopaedics with high clinical interest to restore bone defects and facilitate the healing process, owing its outstanding bioresorbability and osteoconductive/osteoinductive features. Ion incorporation expands their application by increasing the osteogenic and neovascularization potential of the materials, as well as their mechanical performance. Recent accomplishments of brushite cements incorporating bioactive ions are overviewed. Focus was placed on the role of ions on the physicochemical and biological properties of the biomaterials, namely their structure, setting time, injectability and handling, mechanical behaviour, ion release and in vivo osteogenesis, angiogenesis and vascularization. Antibacterial activity of the cements and their potential use for delivery of drugs are also highlighted herein.
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20
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Magnesium level correlation with clinical status and quality of life in women with hormone related conditions and pregnancy based on real world data. Sci Rep 2021; 11:5734. [PMID: 33707700 PMCID: PMC7952720 DOI: 10.1038/s41598-021-85156-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 02/22/2021] [Indexed: 11/21/2022] Open
Abstract
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.
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21
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Ranjit R, Takalloabdal S, Galchenko A. Importance of micronutrients in the oral cavity. ACTA STOMATOLOGICA NAISSI 2021. [DOI: 10.5937/asn2183186r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Introduction: Micronutrients play a potent role in the functioning of the different systems of the organism. It is necessary to sustain an adequate status of the micronutrients for maintaining the optimal condition of the oral cavity. The aim: Toemphasize the importance of different micronutrients for the normal functioning of the oral cavity, as well as their influence on the occurrence of various diseases of the soft and hard tissues of the oral cavity. Conclusion: Micronutrients such as vitamin C, B9 and E, calcium, zinc, copper and iron have a role in development so as anti-inflammatory and antioxidants properties Deficiency of certain micronutrients plays an important role in the development of periodontitis and caries. People with chronic inflammatory bowel disease, as well as children, pregnant and breastfeeding women, are usually deficient in these vitamins and therefore often susceptible to the development of inflammatory changes in soft tissues of oral cavity , periodontitis and caries.
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22
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Jimoh MO, Afolayan AJ, Lewu FB. Nutrients and antinutrient constituents of Amaranthus caudatus L. Cultivated on different soils. Saudi J Biol Sci 2020; 27:3570-3580. [PMID: 33304168 PMCID: PMC7715444 DOI: 10.1016/j.sjbs.2020.07.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 07/26/2020] [Accepted: 07/26/2020] [Indexed: 02/04/2023] Open
Abstract
This study investigated variations in the concentration of nutrients, antinutrients and mineral content of Amaranthus caudatus harvested from different soil types at various stages of maturity. Four out the five soils namely; sandy clay loam, silty clay loam, clayey loam and loam were experimentally formulated from primary particles of silt, clay and sand in line with the United State Department of Agriculture's (USDA) soil triangle protocol. The unfractionated soil was used as the control. After harvesting at pre-flowering (61 days after planting), flowering (71 days after planting) and post-flowering (91 days after planting) stages, nutrient and antinutrient analyses were carried out following Association of Official Analytical Chemists (AOAC) and other referenced methods while the Inductively Coupled Plasma- Optical Emission Spectrometer was used to determine mineral compositions of the plant samples. The results of the study revealed that particle size and physicochemical properties of the soil influenced the number of minerals deposited in plant tissues. It was further observed that the nutritional properties of the plant change as plant ages. For an optimal yield of vitamins A and E, clayey loam proved to be the best soil particularly when A. caudatus is harvested before flowering but for vitamin C, sandy clayey loam yielded the highest output at the same stage. Similarly, clayey loam and loam soils yielded the highest proximate compositions at flowering and pre-flowering; however, mineral elements (micro and macro) were highest in control and loam soils.
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Affiliation(s)
- Muhali Olaide Jimoh
- Medicinal Plants and Economic Development (MPED) Research Centre, Department of Botany, University of Fort Hare, Alice 5700, South Africa
- Department of Horticultural Sciences, Cape Peninsula University of Technology, Bellville Campus, Bellville 7537, Cape Town, South Africa
| | - Anthony Jide Afolayan
- Medicinal Plants and Economic Development (MPED) Research Centre, Department of Botany, University of Fort Hare, Alice 5700, South Africa
| | - Francis Bayo Lewu
- Department of Agriculture, Cape Peninsula University of Technology, Wellington Campus, Wellington 7654, Cape Town, South Africa
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23
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Rodelo-Haad C, Pendón-Ruiz de Mier MV, Díaz-Tocados JM, Martin-Malo A, Santamaria R, Muñoz-Castañeda JR, Rodríguez M. The Role of Disturbed Mg Homeostasis in Chronic Kidney Disease Comorbidities. Front Cell Dev Biol 2020; 8:543099. [PMID: 33282857 PMCID: PMC7688914 DOI: 10.3389/fcell.2020.543099] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 10/09/2020] [Indexed: 12/19/2022] Open
Abstract
Some of the critical mechanisms that mediate chronic kidney disease (CKD) progression are associated with vascular calcifications, disbalance of mineral metabolism, increased oxidative and metabolic stress, inflammation, coagulation abnormalities, endothelial dysfunction, or accumulation of uremic toxins. Also, it is widely accepted that pathologies with a strong influence in CKD progression are diabetes, hypertension, and cardiovascular disease (CVD). A disbalance in magnesium (Mg) homeostasis, more specifically hypomagnesemia, is associated with the development and progression of the comorbidities mentioned above, and some mechanisms might explain why low serum Mg is associated with negative clinical outcomes such as major adverse cardiovascular and renal events. Furthermore, it is likely that hypomagnesemia causes the release of inflammatory cytokines and C-reactive protein and promotes insulin resistance. Animal models have shown that Mg supplementation reverses vascular calcifications; thus, clinicians have focused on the potential benefits that Mg supplementation may have in humans. Recent evidence suggests that Mg reduces coronary artery calcifications and facilitates peripheral vasodilation. Mg may reduce vascular calcification by direct inhibition of the Wnt/β-catenin signaling pathway. Furthermore, Mg deficiency worsens kidney injury induced by an increased tubular load of phosphate. One important consequence of excessive tubular load of phosphate is the reduction of renal tubule expression of α-Klotho in moderate CKD. Low Mg levels worsen the reduction of Klotho induced by the tubular load of phosphate. Evidence to support clinical translation is yet insufficient, and more clinical studies are required to claim enough evidence for decision-making in daily practice. Meanwhile, it seems reasonable to prevent and treat Mg deficiency. This review aims to summarize the current understanding of Mg homeostasis, the potential mechanisms that may mediate the effect of Mg deficiency on CKD progression, CVD, and mortality.
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Affiliation(s)
- Cristian Rodelo-Haad
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Córdoba, Spain.,University of Córdoba, Córdoba, Spain.,Nephrology Service, Reina Sofia University Hospital, Córdoba, Spain.,Spanish Renal Research Network (REDinREN), Institute of Health Carlos III, Madrid, Spain
| | - M Victoria Pendón-Ruiz de Mier
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Córdoba, Spain.,University of Córdoba, Córdoba, Spain.,Nephrology Service, Reina Sofia University Hospital, Córdoba, Spain.,Spanish Renal Research Network (REDinREN), Institute of Health Carlos III, Madrid, Spain
| | - Juan Miguel Díaz-Tocados
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Córdoba, Spain.,University of Córdoba, Córdoba, Spain
| | - Alejandro Martin-Malo
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Córdoba, Spain.,University of Córdoba, Córdoba, Spain.,Nephrology Service, Reina Sofia University Hospital, Córdoba, Spain.,Spanish Renal Research Network (REDinREN), Institute of Health Carlos III, Madrid, Spain
| | - Rafael Santamaria
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Córdoba, Spain.,University of Córdoba, Córdoba, Spain.,Nephrology Service, Reina Sofia University Hospital, Córdoba, Spain.,Spanish Renal Research Network (REDinREN), Institute of Health Carlos III, Madrid, Spain
| | - Juan Rafael Muñoz-Castañeda
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Córdoba, Spain.,University of Córdoba, Córdoba, Spain.,Nephrology Service, Reina Sofia University Hospital, Córdoba, Spain.,Spanish Renal Research Network (REDinREN), Institute of Health Carlos III, Madrid, Spain
| | - Mariano Rodríguez
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Córdoba, Spain.,University of Córdoba, Córdoba, Spain.,Nephrology Service, Reina Sofia University Hospital, Córdoba, Spain.,Spanish Renal Research Network (REDinREN), Institute of Health Carlos III, Madrid, Spain
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Varghese A, Lacson E, Sontrop JM, Acedillo RR, Al-Jaishi AA, Anderson S, Bagga A, Bain KL, Bennett LL, Bohm C, Brown PA, Chan CT, Cote B, Dev V, Field B, Harris C, Kalatharan S, Kiaii M, Molnar AO, Oliver MJ, Parmar MS, Schorr M, Shah N, Silver SA, Smith DM, Sood MM, St Louis I, Tennankore KK, Thompson S, Tonelli M, Vorster H, Waldvogel B, Zacharias J, Garg AX. A Higher Concentration of Dialysate Magnesium to Reduce the Frequency of Muscle Cramps: A Narrative Review. Can J Kidney Health Dis 2020; 7:2054358120964078. [PMID: 33149925 PMCID: PMC7585892 DOI: 10.1177/2054358120964078] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 08/28/2020] [Indexed: 12/21/2022] Open
Abstract
Purpose of review: Strategies to mitigate muscle cramps are a top research priority for patients receiving hemodialysis. As hypomagnesemia is a possible risk factor for cramping, we reviewed the literature to better understand the physiology of cramping as well as the epidemiology of hypomagnesemia and muscle cramps. We also sought to review the evidence from interventional studies on the effect of oral and dialysate magnesium-based therapies on muscle cramps. Sources of information: Peer-reviewed articles. Methods: We searched for relevant articles in major bibliographic databases including MEDLINE and EMBASE. The methodological quality of interventional studies was assessed using a modified version of the Downs and Blacks criteria checklist. Key findings: The etiology of muscle cramps in patients receiving hemodialysis is poorly understood and there are no clear evidence-based prevention or treatment strategies. Several factors may play a role including a low concentration of serum magnesium. The prevalence of hypomagnesemia (concentration of <0.7 mmol/L) in patients receiving hemodialysis ranges from 10% to 20%. Causes of hypomagnesemia include a low dietary intake of magnesium, use of medications that inhibit magnesium absorption (eg, proton pump inhibitors), increased magnesium excretion (eg, high-dose loop diuretics), and a low concentration of dialysate magnesium. Dialysate magnesium concentrations of ≤0.5 mmol/L may be associated with a decrease in serum magnesium concentration over time. Preliminary evidence from observational and interventional studies suggests a higher dialysate magnesium concentration will raise serum magnesium concentrations and may reduce the frequency and severity of muscle cramps. However, the quality of evidence supporting this benefit is limited, and larger, multicenter clinical trials are needed to further determine if magnesium-based therapy can reduce muscle cramps in patients receiving hemodialysis. In studies conducted to date, increasing the concentration of dialysate magnesium appears to be well-tolerated and is associated with a low risk of symptomatic hypermagnesemia. Limitations: Few interventional studies have examined the effect of magnesium-based therapy on muscle cramps in patients receiving hemodialysis and most were nonrandomized, pre-post study designs.
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Affiliation(s)
- Akshay Varghese
- Division of Nephrology, Department of Medicine, London Health Sciences Centre, London, ON, Canada
| | - Eduardo Lacson
- Division of Nephrology, Tufts University School of Medicine, Boston, MA, USA
| | - Jessica M Sontrop
- Division of Nephrology, Department of Medicine, London Health Sciences Centre, London, ON, Canada
| | - Rey R Acedillo
- Department of Medicine, Thunder Bay Regional Health Sciences Centre, Thunder Bay, ON, Canada
| | - Ahmed A Al-Jaishi
- Division of Nephrology, Department of Medicine, London Health Sciences Centre, London, ON, Canada
| | - Sierra Anderson
- Division of Nephrology, Department of Medicine, London Health Sciences Centre, London, ON, Canada
| | - Amit Bagga
- Division of Nephrology, Department of Medicine, Windsor Regional Hospital, ON, Canada
| | - Katie L Bain
- Division of Nephrology, Department of Medicine, London Health Sciences Centre, London, ON, Canada
| | | | - Clara Bohm
- Department of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Pierre A Brown
- Department of Nephrology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Christopher T Chan
- Division of Nephrology, University Health Network, University of Toronto, ON, Canada
| | - Brenden Cote
- Patient Partner, London Health Sciences Centre, London, ON, Canada
| | - Varun Dev
- Department of Nephrology, Humber River Hospital, Toronto, ON, Canada
| | - Bonnie Field
- Patient Partner, Patient and Family Advisory Council, London Health Sciences Centre, London, ON, Canada
| | - Claire Harris
- Division of Nephrology, Department of Medicine, The University of British Columbia, Vancouver, BC, Canada
| | | | - Mercedeh Kiaii
- Division of Nephrology, Department of Medicine, St Paul's Hospital, The University of British Columbia, Vancouver, BC, Canada
| | - Amber O Molnar
- Division of Nephrology, Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - Matthew J Oliver
- Division of Nephrology, Department of Medicine, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - Malvinder S Parmar
- Department of Medicine, Timmins & District Hospital, Timmins, ON, Canada
| | - Melissa Schorr
- Division of Nephrology, Department of Medicine, London Health Sciences Centre, London, ON, Canada
| | - Nikhil Shah
- Division of Nephrology, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Samuel A Silver
- Department of Medicine, Kingston Health Sciences Centre, Queen's University, Kingston, ON, Canada
| | - D Michael Smith
- Patient Partner, Patient and Family Advisory Council, London Health Sciences Centre, London, ON, Canada
| | - Manish M Sood
- Department of Nephrology, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Irina St Louis
- Division of Nephrology, Department of Medicine, London Health Sciences Centre, London, ON, Canada
| | - Karthik K Tennankore
- Division of Nephrology, Department of Medicine, Department of Surgery, Dalhousie University, Halifax, NS, Canada
| | - Stephanie Thompson
- Division of Nephrology, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Marcello Tonelli
- Division of Nephrology, Department of Medicine, Health Sciences Centre, University of Calgary, Calgary, AB, Canada
| | | | - Blair Waldvogel
- Patient Partner, Home Hemodialysis Department, Health Sciences Centre, Winnipeg, MB, Canada
| | - James Zacharias
- Department of Medicine, University of Manitoba, Winnipeg, MB, Canada
| | - Amit X Garg
- Division of Nephrology, Department of Medicine, London Health Sciences Centre, London, ON, Canada.,ICES Western, London, ON, Canada
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Mellott A, Rockwood J, Zhelay T, Luu CT, Kaitsuka T, Kozak JA. TRPM7 channel activity in Jurkat T lymphocytes during magnesium depletion and loading: implications for divalent metal entry and cytotoxicity. Pflugers Arch 2020; 472:1589-1606. [PMID: 32964285 DOI: 10.1007/s00424-020-02457-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 12/14/2022]
Abstract
TRPM7 is a cation channel-protein kinase highly expressed in T lymphocytes and other immune cells. It has been proposed to constitute a cellular entry pathway for Mg2+ and divalent metal cations such as Ca2+, Zn2+, Cd2+, Mn2+, and Ni2+. TRPM7 channels are inhibited by cytosolic Mg2+, rendering them largely inactive in intact cells. The dependence of channel activity on extracellular Mg2+ is less well studied. Here, we measured native TRPM7 channel activity in Jurkat T cells maintained in external Mg2+ concentrations varying between 400 nM and 1.4 mM for 1-3 days, obtaining an IC50 value of 54 μM. Maintaining the cells in 400 nM or 8 μM [Mg2+]o resulted in almost complete activation of TRPM7 in intact cells, due to cytosolic Mg2+ depletion. A total of 1.4 mM [Mg2+]o was sufficient to fully eliminate the basal current. Submillimolar concentrations of amiloride prevented cellular Mg2+ depletion but not loading. We investigated whether the cytotoxicity of TRPM7 permeant metal ions Ni2+, Zn2+, Cd2+, Co2+, Mn2+, Sr2+, and Ba2+ requires TRPM7 channel activity. Mg2+ loading modestly reduced cytotoxicity of Zn2+, Co2+, Ni2+, and Mn2+ but not of Cd2+. Channel blocker NS8593 reduced Co2+ and Mn2+ but not Cd2+ or Zn2+ cytotoxicity and interfered with Mg2+ loading as evaluated by TRPM7 channel basal activity. Ba2+ and Sr2+ were neither detectably toxic nor permeant through the plasma membrane. These results indicate that in Jurkat T cells, entry of toxic divalent metal cations primarily occurs through pathways distinct from TRPM7. By contrast, we found evidence that Mg2+ entry requires TRPM7 channels.
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Affiliation(s)
- Alayna Mellott
- Department of Neuroscience, Cell Biology and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, OH, 45435, USA
| | - Jananie Rockwood
- Department of Neuroscience, Cell Biology and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, OH, 45435, USA
| | - Tetyana Zhelay
- Department of Neuroscience, Cell Biology and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, OH, 45435, USA
| | - Charles Tuan Luu
- Department of Neuroscience, Cell Biology and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, OH, 45435, USA
| | - Taku Kaitsuka
- School of Pharmacy in Fukuoka, International University of Health and Welfare, Enokizu 137-1, Okawa, Fukuoka, Japan
| | - J Ashot Kozak
- Department of Neuroscience, Cell Biology and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, OH, 45435, USA.
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Lodoso-Torrecilla I, Klein Gunnewiek R, Grosfeld EC, de Vries RBM, Habibović P, Jansen JA, van den Beucken JJJP. Bioinorganic supplementation of calcium phosphate-based bone substitutes to improve in vivo performance: a systematic review and meta-analysis of animal studies. Biomater Sci 2020; 8:4792-4809. [PMID: 32729591 DOI: 10.1039/d0bm00599a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Supplementation of CaP-based bone graft substitutes with bioinorganics such as strontium, zinc or silicon is an interesting approach to increase the biological performance in terms of bone regenerative potential of calcium phosphate (CaP)-based bone substitutes. However, the in vivo efficacy of this approach has not been systematically analyzed, yet. Consequently, we performed a systematic review using the available literature regarding the effect of bioinorganic supplementation in CaP-based biomaterials on new bone formation and material degradation in preclinical animal bone defect models and studied this effect quantitatively by performing a meta-analysis. Additional subgroup analyses were used to study the effect of different bioinorganics, animal model, or phase category of CaP-based biomaterial on bone formation or material degradation. Results show that bioinorganic supplementation increases new bone formation (standardized mean difference [SMD]: 1.43 SD, confidence interval [CI]: 1.13-1.73). Additional subgroup analysis showed that strontium, magnesium and silica significantly enhanced bone formation, while zinc did not have any effect. This effect of bioinorganic supplementation on new bone formation was stronger for DCPD or β-TCP and biphasic CaPs than for HA or α-TCP (p < 0.001). In general, material degradation was slightly hindered by bioinorganic supplementation (mean difference [MD]: 0.84%, CI: 0.01-1.66), with the exception of strontium that significantly enhanced degradation. Overall, bioinorganic supplementation represents an effective approach to enhance the biological performance of CaP-based bone substitutes.
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MicroRNA-16, via FGF2 Regulation of the ERK/MAPK Pathway, Is Involved in the Magnesium-Promoted Osteogenic Differentiation of Mesenchymal Stem Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:3894926. [PMID: 32411326 PMCID: PMC7201663 DOI: 10.1155/2020/3894926] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/16/2020] [Indexed: 12/26/2022]
Abstract
microRNAs (miRNAs) participate in the osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). However, few reports have discussed the effect of miRNAs on the magnesium chloride (MgCl2)-induced promotion of osteogenic differentiation of BMSCs, a process involved in the healing of bone tissue. As determined in the present investigation, MgCl2 decreased miR-16 levels; increased levels of fibroblast growth factor 2 (FGF2), p-p38, and p-ERK; and promoted the osteogenic differentiation of BMSCs. Enhancement of miR-16 levels by an miR-16 mimic blocked these MgCl2-induced changes. Moreover, luciferase reporter assays confirmed that miR-16 binds to the 3'UTR region of FGF2 mRNA. Down-regulation of FGF2 blocked the MgCl2-induced increases of p-p38 and p-ERK and the promotion of the osteogenic differentiation of BMSCs. Furthermore, over-expression of miR-16 attenuated the MgCl2-induced overproduction of p-p38 and p-ERK1/2 and the high levels of osteogenic differentiation, effects that were reversed by elevated expression of FGF2. In summary, the present findings provide a mechanism by which miR-16 regulates MgCl2-induced promotion of osteogenic differentiation by targeting FGF2-mediated activation of the ERK/MAPK pathway.
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Severe magnesium deficiency compromises systemic bone mineral density and aggravates inflammatory bone resorption. J Nutr Biochem 2020; 77:108301. [DOI: 10.1016/j.jnutbio.2019.108301] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 11/10/2019] [Accepted: 11/16/2019] [Indexed: 12/28/2022]
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Kumar SS, Khushbu G, Dev MJ. Hypomagnesaemia induced recurrent cerebellar ataxia: an interesting case with successful management. CEREBELLUM & ATAXIAS 2020; 7:1. [PMID: 31934342 PMCID: PMC6950808 DOI: 10.1186/s40673-019-0110-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 12/30/2019] [Indexed: 11/11/2022]
Abstract
Purpose Severe Hypomagnesaemia is a rare biochemical findings utilized for identifying the etiology of cerebellar ataxia. It requires a high degree of suspicion to diagnose. MRI findings are often nonspecific. Methods The author presents a case of 38 yrs. old male patient presented with vomiting, gait imabalance and nystagmus. Biochemical investigations lead to severe hypomagnesaemia. Also MRI findings were matched suggesting of hyperintesity in left cerebellar hemisphere. Results Patient was treated with magnesium infusion which leads to recovery of patient. Again the same symptomology was repeated after 3 months and disappearance after same treatment. Offending cause was diagnosed and proton pump inhibitors stopped. Conclusion Severe Hypomagnesaemia is a rare but treatable cause if diagnosed at right time. It requires a high degree of suspicion to diagnose it. Measurement of serum magnesium levels should always be kept in back of mind if definite management of cerebellar symptoms has to be done.
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Affiliation(s)
| | - Goel Khushbu
- 2Department of Neurology, Max Super Speciality Hospital, Saket, New Delhi, 110017 India
| | - Mukherji Joy Dev
- 2Department of Neurology, Max Super Speciality Hospital, Saket, New Delhi, 110017 India
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Micronutrients and Oral Health an Opportunity to Prevent Oral Diseases. ROMANIAN JOURNAL OF DIABETES NUTRITION AND METABOLIC DISEASES 2019. [DOI: 10.2478/rjdnmd-2019-0032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Abstract
Nutrition plays an important role in oral health as it affects the growth of craniofacial, dental and periodontal structures. When adequate food is not unavailable, oral health may be impaired, and even overexposure to the diet may also inversely affect. Therefore, there is interdependency between nutrition and oral health. The importance of Micronutrients in normal function is becoming increasingly apparent and insufficient micronutrient intake has both short term and long-term consequences. Micronutrient assessment of suspected individual and appropriate supplement therapy may assist in dental disease prevention.
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31
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Lan Y, Zha F, Peckrul A, Hanson B, Johnson B, Rao J, Chen B. Genotype x Environmental Effects on Yielding Ability and Seed Chemical Composition of Industrial Hemp (
Cannabis sativa
L.) Varieties Grown in North Dakota, USA. J AM OIL CHEM SOC 2019. [DOI: 10.1002/aocs.12291] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yang Lan
- Department of Plant SciencesNorth Dakota State University, Loftsgard Hall 1661365 Bolley Drive Fargo ND 58108 USA
| | - Fengchao Zha
- Department of Plant SciencesNorth Dakota State University, Loftsgard Hall 1661365 Bolley Drive Fargo ND 58108 USA
| | - Allen Peckrul
- Department of Plant SciencesNorth Dakota State University, Loftsgard Hall 1661365 Bolley Drive Fargo ND 58108 USA
| | - Bryan Hanson
- Langdon Research Extension CenterNorth Dakota State University, 107th Ave NE Langdon ND 58249 USA
| | - Burton Johnson
- Department of Plant SciencesNorth Dakota State University, Loftsgard Hall 1661365 Bolley Drive Fargo ND 58108 USA
| | - Jiajia Rao
- Department of Plant SciencesNorth Dakota State University, Loftsgard Hall 1661365 Bolley Drive Fargo ND 58108 USA
| | - Bingcan Chen
- Department of Plant SciencesNorth Dakota State University, Loftsgard Hall 1661365 Bolley Drive Fargo ND 58108 USA
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Abstract
BACKGROUND Sickle cell disease is an autosomal recessive inherited haemoglobinopathy which causes painful vaso-occlusive crises due to sickle red blood cell dehydration. Vaso-occlusive crises are common painful events responsible for a variety of clinical complications; overall mortality is increased and life expectancy decreased compared to the general population. Experimental studies suggest that intravenous magnesium has proven to be well-tolerated in individuals hospitalised for the immediate relief of acute (sudden onset) painful crisis and has the potential to decrease the length of hospital stay. Some in vitro studies and open studies of long-term oral magnesium showed promising effect on pain relief but failed to show its efficacy. The studies show that oral magnesium therapy may prevent sickle red blood cell dehydration and prevent recurrent painful episodes. There is a need to access evidence for the impact of oral and intravenous magnesium effect on frequency of pain, length of hospital stay and quality of life. This is an updated version of the review. OBJECTIVES To evaluate the effects of short-term intravenous magnesium on the length of hospital stay and quality of life in children and adults with sickle cell disease. To determine the effects of long-term oral magnesium therapy on the frequency of painful crises and the quality of life in children and adults with sickle cell disease. SEARCH METHODS We searched the Cochrane Haemoglobinopathies Trials Register, compiled from electronic database searches and handsearching of journals and conference abstract books.Date of last search of the Cochrane Cystic Fibrosis and Genetic Disorders Group's Haemoglobinopathies Trials Register: 03 February 2019.Date of last search of other resources (clinical trials registries): 04 April 2019. SELECTION CRITERIA We searched for published and unpublished randomized controlled studies of oral or intravenous magnesium compared to placebo or no magnesium. DATA COLLECTION AND ANALYSIS Authors independently assessed the study quality and extracted the data using standard Cochrane methodologies. MAIN RESULTS We included five randomized placebo-controlled studies with a total of 386 participants (aged three to 53 years). Of these, two shorter parallel studies (n = 306) compared intravenous magnesium sulphate to placebo (normal saline) for admission to hospital due to a vaso-occlusive crisis, for which we were able to analyse data. The quality of evidence was moderate for studies in this comparison, mainly due to limitations due to risk of bias and imprecision. Two of the three longer-term studies comparing oral magnesium pidolate to placebo had a cross-over design. The third was a parallel factorial study which compared hydroxyurea and oral magnesium to each other and to placebo over a longer period of time; we only present the comparison of oral magnesium to placebo from this study. The quality of evidence was very low with uncertainty of the estimation.The eight-hourly dose levels in the two studies of intravenous magnesium were different; one used 100 mg/kg while the second used 40 mg/kg. Only one of these studies (n = 104) reported the mean daily pain score while hospitalised (a non-significant difference between groups, moderate quality evidence). The second study (n = 202) reported a number of child- and parent-reported quality of life scores. None of the scores showed any difference between treatment groups (low quality evidence). Data from one study (n = 106) showed no difference in length of stay in hospital between groups (low quality evidence). Both studies reported on adverse events, but not defined by severity as we had planned. One study showed significantly more participants receiving intravenous magnesium experienced warmth at infusion site compared to placebo; there were no differences between groups for other adverse events (low quality evidence).Three studies (n = 80) compared oral magnesium pidolate to placebo. None of them reported data which we were able to analyse. One study (n = 24) reported on the number of painful days and stated there was no difference between two groups (low quality evidence). None of the studies reported on quality of life or length of hospital stay. Two studies (n = 68) reported there were no differences in levels of magnesium in either plasma or red blood cells (moderate quality evidence). Two studies (n = 56) reported adverse events. One reported episodes of mild diarrhoea and headache, all of which resolved without stopping treatment. The second study reported adverse events as gastrointestinal disorders, headache or migraine, upper respiratory infections and rash; which were all evenly distributed across treatment groups (moderate quality evidence). AUTHORS' CONCLUSIONS Moderate to low quality evidence showed neither intravenous magnesium and oral magnesium therapy has an effect on reducing painful crisis, length of hospital stay and changing quality of life in treating sickle cell disease. Therefore, no definitive conclusions can be made regarding its clinical benefit. Further randomized controlled studies, perhaps multicentre, are necessary to establish whether intravenous and oral magnesium therapies have any effect on improving the health of people with sickle cell disease.
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Affiliation(s)
- Nan Nitra Than
- Faculty of Medicine, Melaka‐Manipal Medical College (MMMC), Manipal Academy of Higher Education(MAHE)Department of Community MedicineMelakaMalaysia75150
| | - Htoo Htoo Kyaw Soe
- Faculty of Medicine, Melaka‐Manipal Medical College, Manipal Academy of Higher Education (MAHE)Department of Community MedicineJalan Batu HamparBukit BaruMelakaMalaysia75150
| | - Senthil K Palaniappan
- NHS trustDepartment of Medicine, University Hospitals of LeicesterLeicester Royal InfirmaryLeicesterUKLE1 5WW
| | - Adinegara BL Abas
- Melaka‐Manipal Medical College (Manipal Academy of Higher Education)Department of Community MedicineJalan Batu HamparBukit BaruMelakaMalaysia75150
| | - Lucia De Franceschi
- University of Verona‐AOUI VeronaDepartment of MedicinePolilinico GB RossiVeronaItaly37134
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Kamran M, Kharazmi F, Malekzadeh K, Talebi A, Khosravi F, Soltani N. Effect of Long-term Administration of Oral Magnesium Sulfate and Insulin to Reduce Streptozotocin-Induced Hyperglycemia in Rats: the Role of Akt2 and IRS1 Gene Expressions. Biol Trace Elem Res 2019; 190:396-404. [PMID: 30519800 DOI: 10.1007/s12011-018-1555-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Accepted: 10/23/2018] [Indexed: 12/29/2022]
Abstract
The effects of long-term oral administration of magnesium sulfate and insulin on hyperglycemia were investigated using Akt2 and IRS1 gene expression methods in streptozotocin-induced diabetic rats. Fifty rats were randomly divided into five experimental groups: 1, non-diabetic control (NDC); 2, Mg2+-treated non-diabetic control (Mg-NDC); 3, chronic diabetic (CD); 4, Mg2+-treated chronic diabetic (Mg-CD); and 5, insulin-treated chronic diabetic (Ins-CD). Streptozotocin was used to induce diabetes. The Mg-CD and Mg-NDC groups received 10 g/l of MgSO4 added to drinking water. The Ins-CD group received 2.5 U/kg of insulin twice a day. Blood glucose level and body weight were measured every week. The intraperitoneal glucose tolerance test (IPGTT) was performed after 16 weeks. MgSO4 administration improved the blood glucose level and IPGTT. It also increased Akt2 and IRS1 genes as well as protein expression. Insulin lowered the blood glucose level and increased IRS1 gene and protein expression, but did not affect Akt2 gene and protein expression. Glucose reduction after Mg therapy may be mediated, at least partially, via IRS1 and Akt2 genes and protein stimulation. In insulin-treated rats, insulin resistance was not significant due to the absence of Akt2 gene expression.
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Affiliation(s)
- Mitra Kamran
- Physiology Department, Faculty of Medicine, Hormozgan University of Medical Science, Bandar Abbas, Iran
- Endocrinology and Metabolism Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Fatemeh Kharazmi
- Physiology Department, Faculty of Medicine, Hormozgan University of Medical Science, Bandar Abbas, Iran
- Molecular Medicine Research Center, Hormozgan University of Medical Science, Bandar Abbas, Iran
| | - Kianoosh Malekzadeh
- Molecular Medicine Research Center, Hormozgan University of Medical Science, Bandar Abbas, Iran
| | - Ardeshir Talebi
- Clinical Pathology Department, Faculty of Medicine, Isfahan University of Medical Science, Isfahan, Iran
| | - Fatemah Khosravi
- Physiology Department, Faculty of Medicine, Hormozgan University of Medical Science, Bandar Abbas, Iran
- Molecular Medicine Research Center, Hormozgan University of Medical Science, Bandar Abbas, Iran
| | - Nepton Soltani
- Endocrinology and Metabolism Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
- Molecular Medicine Research Center, Hormozgan University of Medical Science, Bandar Abbas, Iran.
- Physiology Department, School of Medicine, Isfahan University of Medical Science, Isfahan, Iran.
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Doncel B, Capelesso A, Giannitti F, Cajarville C, Macías-Rioseco M, Silveira C, Costa RA, Riet-Correa F. Hypomagnesemia in dairy cattle in Uruguay. PESQUISA VETERINÁRIA BRASILEIRA 2019. [DOI: 10.1590/1678-5150-pvb-6215] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
ABSTRACT: An outbreak of hypomagnesemia is reported in Holstein dairy cattle grazing lush oat (Avena sativa) pasture in Uruguay. Nine of 270 (3.3%) cows died in May-July (autumn-winter) 2017. These nine cows were from 2 to 9-years-old (1st-6th lactation), with 22 to 194 days of lactation and 15.8 to 31.4L of daily milk production. Two cows with acute sialorrhea, muscle spasms, lateral recumbency, weakness, opisthotonos, and coma, were euthanized and necropsied. No significant macroscopic or histological lesions were found. One untreated clinically-affected cow and eight out of 14 clinically healthy cows of the same group under similar management and production conditions had low serum levels of Mg (lower than 0.7mmol/L). Secondarily, both clinically affected cows and six out of 14 healthy cows had low serum Ca levels. The K/(Ca+Mg) ratio of two oat forages, corn silage, and ration was 5.10, 7.73, 2.45, and 0.85, respectively. A K/(Ca+Mg) ratio lower than 2.2 represents a risk for hypomagnesemia. The difference between the contribution-requirement of minerals in the diet was established and a daily deficiency of Mg (-0.36g/day), Na (-25.2g/day) and Ca (-9.27g/day) was found, while K (184.42g/day) and P (12.81g/day) were in excess. The diet was reformulated to correct the deficiencies and the disease was controlled by the daily administration of 80g of magnesium oxide, 80g of calcium carbonate and 30g sodium chloride per cow. It is concluded that hypomagnesemia is a cause of mortality in dairy cattle in Uruguay, and that the condition can be prevented by appropriate diet formulation.
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Affiliation(s)
- Benjamín Doncel
- Universidad Nacional de Colombia, Colombia; Instituto Nacional de Investigación Agropecuaria, Uruguay
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Künili IE, Çolakoğlu FA. Chemical and Nutritional Characteristics of Holothuria tubulosa (Gmelin, 1788); A Seasonally Comparative Study. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2019. [DOI: 10.1080/10498850.2019.1637383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Ibrahim Ender Künili
- Faculty of Marine Science and Technology, Department of Fishing and Processing Techology, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Fatma Arık Çolakoğlu
- Faculty of Marine Science and Technology, Department of Fishing and Processing Techology, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
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Clinical Approach to Hypocalcemia in Newborn Period and Infancy: Who Should Be Treated? Int J Pediatr 2019; 2019:4318075. [PMID: 31320908 PMCID: PMC6607701 DOI: 10.1155/2019/4318075] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 05/28/2019] [Indexed: 12/19/2022] Open
Abstract
Introduction Hypocalcemia is a common metabolic problem in newborn period and infancy. There is consensus on the treatment of the symptomatic cases while the calcium level at which the treatment will be initiated and the treatment options are still controversial in asymptomatic hypocalcemia. Methods This review article will cover hypocalcemia with specific reference to calcium homeostasis and definition, etiology, diagnosis, and treatment of hypocalcemia in newborn and infancy period. Results Hypocalcemia is defined as total serum calcium <8 mg/dL (2 mmol/L) or ionized calcium <4.4 mg/dL (1.1 mmol/L) for term infants or preterm infants weighing >1500 g at birth and total serum calcium <7 mg/dL (1.75 mmol/L) or ionized calcium <4 mg/dL (1 mmol/L) for very low birth weight infants weighing <1500 g. Early-onset hypocalcemia is generally asymptomatic; therefore, screening for hypocalcemia at the 24th and 48th hour after birth is warranted for infants with high risk of developing hypocalcemia. Late-onset hypocalcemia, which is generally symptomatic, develops after the first 72 h and toward the end of the first week of life. Excessive phosphate intake, hypomagnesemia, hypoparathyroidism, and vitamin D deficiency are commonest causes of late-onset hypocalcemia. Hypocalcemia should be treated according to etiology. Calcium replacement is the cornerstone of the treatment. Elementary calcium replacement of 40 to 80 mg/kg/d is recommended for asymptomatic newborns. Elementary calcium of 10 to 20 mg/kg (1–2 mL/kg/dose 10% calcium gluconate) is given as a slow intravenous infusion in the acute treatment of hypocalcemia in patients with symptoms of tetany or hypocalcemic convulsion. Conclusion Since most infants with hypocalcemia are usually asymptomatic, serum total or ionized calcium levels must be monitored in preterm infants with a gestational age <32 weeks, small for gestational age infants, infants of diabetic mothers, and infants with severe prenatal asphyxia with a 1 min Apgar score of <4. The treatment of hypocalcemia should be initiated immediately in infants with reduced calcium levels while investigating the etiology.
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McKeating DR, Fisher JJ, Perkins AV. Elemental Metabolomics and Pregnancy Outcomes. Nutrients 2019; 11:E73. [PMID: 30609706 PMCID: PMC6356574 DOI: 10.3390/nu11010073] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/26/2018] [Accepted: 01/01/2019] [Indexed: 01/22/2023] Open
Abstract
Trace elements are important for human health and development. The body requires specific micronutrients to function, with aberrant changes associated with a variety of negative health outcomes. Despite this evidence, the status and function of micronutrients during pregnancy are relatively unknown and more information is required to ensure that women receive optimal intakes for foetal development. Changes in trace element status have been associated with pregnancy complications such as gestational diabetes mellitus (GDM), pre-eclampsia (PE), intrauterine growth restriction (IUGR), and preterm birth. Measuring micronutrients with methodologies such as elemental metabolomics, which involves the simultaneous quantification and characterisation of multiple elements, could provide insight into gestational disorders. Identifying unique and subtle micronutrient changes may highlight associated proteins that are affected underpinning the pathophysiology of these complications, leading to new means of disease diagnosis. This review will provide a comprehensive summary of micronutrient status during pregnancy, and their associations with gestational disorders. Furthermore, it will also comment on the potential use of elemental metabolomics as a technique for disease characterisation and prediction.
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Affiliation(s)
- Daniel R McKeating
- School of Medical Science, Menzies Health Institute Queensland, Griffith University, Southport 9726, Queensland, Australia.
| | - Joshua J Fisher
- School of Medical Science, Menzies Health Institute Queensland, Griffith University, Southport 9726, Queensland, Australia.
| | - Anthony V Perkins
- School of Medical Science, Menzies Health Institute Queensland, Griffith University, Southport 9726, Queensland, Australia.
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Rodney RM, Celi P, McGrath JJ, Golder HM, Anderson ST, McNeill DM, Fraser DR, Lean IJ. Metabolic and production responses to calcidiol treatment in mid-lactation dairy cows. ANIMAL PRODUCTION SCIENCE 2019. [DOI: 10.1071/an16770] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The study of vitamin D in cattle has often focussed on its role in calcium and mineral metabolism. However, there is evidence of a wider role for vitamin D in bone and energy metabolism. Two studies were conducted to explore relationships between calcidiol supplementation, blood minerals and metabolites in mid-lactation dairy cows. In Experiment 1, a dose-response study was conducted in which 25 mid-lactation cows were fed one of five supplementary calcidiol doses (0, 0.5, 1, 2 or 4 mg calcidiol/day) for 30 days, with blood samples taken every 10 days. Increasing calcidiol dose increased plasma calcidiol (P=0.001), 24,25-(OH)2-D3 (P=0.001) and serum phosphate (P=0.003) in a curvilinear manner, increased and then decreased plasma 25-OH-D2 (P=0.004) and linearly increased 3-epi 25-OH-D3 (P=0.001) and milk calcidiol concentrations (P=0.001). Calcidiol supplementation did not affect milk yield or composition, bodyweight or condition score. In Experiment 2, relationships between blood calcidiol and mineral and metabolite concentrations over time were explored using time-series analysis. Ten mid-lactation cows were fed either 0 or 0.5 mg calcidiol/day for 27 days, with blood samples taken every 3 days. Feeding calcidiol increased plasma calcidiol (P=0.001), 24,25-OH-D3 (P=0.038), and insulin (P=0.046), but decreased 25-OH-D2 (P=0.008) concentrations. Positive associations were identified between blood calcidiol and concentrations of other metabolites, including cholecalciferol, calcium, osteocalcin, glucose, insulin, non-esterified fatty acids, β-hydroxybutyrate, cholesterol, magnesium, phosphorus and total protein at varying lags (±0, 3 or 6 days), while negative relationships were identified between calcidiol and 24,25-(OH)2-D3, and phosphorus 3 days later. Importantly, strong positive associations between calcidiol and indicators of energy metabolism were identified. Overall, these experiments provide support for a positive effect of calcidiol treatment on dairy cow metabolism.
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Chen YS, Kozlov G, Fakih R, Funato Y, Miki H, Gehring K. The cyclic nucleotide-binding homology domain of the integral membrane protein CNNM mediates dimerization and is required for Mg 2+ efflux activity. J Biol Chem 2018; 293:19998-20007. [PMID: 30341174 PMCID: PMC6311497 DOI: 10.1074/jbc.ra118.005672] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/16/2018] [Indexed: 01/07/2023] Open
Abstract
Proteins of the cyclin M family (CNNMs; also called ancient conserved domain proteins, or ACDPs) are represented by four integral membrane proteins that have been proposed to function as Mg2+ transporters. CNNMs are associated with a number of genetic diseases affecting ion movement and cancer via their association with highly oncogenic phosphatases of regenerating liver (PRLs). Structurally, CNNMs contain an N-terminal extracellular domain, a transmembrane domain (DUF21), and a large cytosolic region containing a cystathionine-β-synthase (CBS) domain and a putative cyclic nucleotide-binding homology (CNBH) domain. Although the CBS domain has been extensively characterized, little is known about the CNBH domain. Here, we determined the first crystal structures of the CNBH domains of CNNM2 and CNNM3 at 2.6 and 1.9 Å resolutions. Contrary to expectation, these domains did not bind cyclic nucleotides, but mediated dimerization both in crystals and in solution. Analytical ultracentrifugation experiments revealed an inverse correlation between the propensity of the CNBH domains to dimerize and the ability of CNNMs to mediate Mg2+ efflux. CNBH domains from active family members were observed as both dimers and monomers, whereas the inactive member, CNNM3, was observed only as a dimer. Mutational analysis revealed that the CNBH domain was required for Mg2+ efflux activity of CNNM4. This work provides a structural basis for understanding the function of CNNM proteins in Mg2+ transport and associated diseases.
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Affiliation(s)
- Yu Seby Chen
- From the Department of Biochemistry and Centre for Structural Biology, McGill University, Montreal, Quebec H3G 0B1, Canada and
| | - Guennadi Kozlov
- From the Department of Biochemistry and Centre for Structural Biology, McGill University, Montreal, Quebec H3G 0B1, Canada and
| | - Rayan Fakih
- From the Department of Biochemistry and Centre for Structural Biology, McGill University, Montreal, Quebec H3G 0B1, Canada and
| | - Yosuke Funato
- the Department of Cellular Regulation, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Hiroaki Miki
- the Department of Cellular Regulation, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kalle Gehring
- From the Department of Biochemistry and Centre for Structural Biology, McGill University, Montreal, Quebec H3G 0B1, Canada and , To whom correspondence should be addressed:
Dept. of Biochemistry, McGill University, 3649 Promenade Sir-William-Osler, Rm. 469, Montreal, Quebec H3G 0B1, Canada. Tel.:
514-398-7287; E-mail:
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Jamali AA, Jamali GM, Jamali NH, Tanwani BM, Rajput AA, Jamali AA. Assessment of Serum Magnesium Level in Type 2 Diabetes Mellitus with Diabetic Foot Ulcers (Grade I and II) at Nawabshah, Pakistan. ACTA ACUST UNITED AC 2018. [DOI: 10.4236/ijcm.2018.92011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Govindaraj D, Govindasamy C, Rajan M. RETRACTED: Binary functional porous multi mineral–substituted apatite nanoparticles for reducing osteosarcoma colonization and enhancing osteoblast cell proliferation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [DOI: 10.1016/j.msec.2017.05.095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Schwalfenberg GK, Genuis SJ. The Importance of Magnesium in Clinical Healthcare. SCIENTIFICA 2017; 2017:4179326. [PMID: 29093983 PMCID: PMC5637834 DOI: 10.1155/2017/4179326] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/25/2017] [Accepted: 08/07/2017] [Indexed: 05/12/2023]
Abstract
The scientific literature provides extensive evidence of widespread magnesium deficiency and the potential need for magnesium repletion in diverse medical conditions. Magnesium is an essential element required as a cofactor for over 300 enzymatic reactions and is thus necessary for the biochemical functioning of numerous metabolic pathways. Inadequate magnesium status may impair biochemical processes dependent on sufficiency of this element. Emerging evidence confirms that nearly two-thirds of the population in the western world is not achieving the recommended daily allowance for magnesium, a deficiency problem contributing to various health conditions. This review assesses available medical and scientific literature on health issues related to magnesium. A traditional integrated review format was utilized for this study. Level I evidence supports the use of magnesium in the prevention and treatment of many common health conditions including migraine headache, metabolic syndrome, diabetes, hyperlipidemia, asthma, premenstrual syndrome, preeclampsia, and various cardiac arrhythmias. Magnesium may also be considered for prevention of renal calculi and cataract formation, as an adjunct or treatment for depression, and as a therapeutic intervention for many other health-related disorders. In clinical practice, optimizing magnesium status through diet and supplementation appears to be a safe, useful, and well-documented therapy for several medical conditions.
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Affiliation(s)
- Gerry K. Schwalfenberg
- Department of Family Medicine, University of Alberta, No. 301, 9509-156 Street, Edmonton, AB, Canada T5P 4J5
| | - Stephen J. Genuis
- Faculty of Medicine, University of Alberta, 2935-66 Street, Edmonton, AB, Canada T6K 4C1
- University of Calgary, Calgary, AB, Canada
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Schuchardt JP, Hahn A. Intestinal Absorption and Factors Influencing Bioavailability of Magnesium-An Update. CURRENT NUTRITION & FOOD SCIENCE 2017; 13:260-278. [PMID: 29123461 PMCID: PMC5652077 DOI: 10.2174/1573401313666170427162740] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 04/18/2017] [Accepted: 04/26/2017] [Indexed: 12/16/2022]
Abstract
Background: Information on the bioavailability of the essential mineral Mg2+ is sparse. Objective/Method: Evaluation of the present knowledge on factors influencing the bioavailability and intestinal absorption of Mg2+. Results: Mg2+ is absorbed via a paracellular passive and a transcellular active pathway that involves TRPM6/7 channel proteins. The bioavailability of Mg2+ varies within a broad range, depending on the dose, the food matrix, and enhancing and inhibiting factors. Dietary factors impairing Mg2+ up-take include high doses of other minerals, partly fermentable fibres (e.g., hemicellulose), non-fermentable fibres (e.g., cellulose, lignin), phytate and oxalate, whereas proteins, medium-chain-triglycerides, and low- or indigestible carbohydrates (e.g., resistant starch, oligosaccharides, inulin, mannitol and lactulose) enhance Mg2+ uptake. The Mg2+ dose is a major factor controlling the amount of Mg2+ absorbed. In principle, the relative Mg2+ uptake is higher when the mineral is in-gested in multiple low doses throughout the day compared to a single, large intake of Mg2+. The type of Mg2+ salt appears less relevant than is often thought. Some studies demonstrated a slightly higher bioavailability of organic Mg2+ salts compared to inorganic compounds under standardized conditions, whereas other studies did not. Conclusion: Due to the lack of standardized tests to assess Mg2+ status and intestinal absorption, it remains unclear which Mg2+ binding form produces the highest bioavailability. The Mg2+ intake dose combined with the endogenous Mg2+ status is more important. Because Mg2+ cannot be stored but only retained for current needs, a higher absorption is usually followed by a higher excretion of the mineral.
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Affiliation(s)
- Jan Philipp Schuchardt
- Institute of Food Science and Human Nutrition, Leibniz University Hannover, Hannover, Germany
| | - Andreas Hahn
- Institute of Food Science and Human Nutrition, Leibniz University Hannover, Hannover, Germany
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Joshi A, Siva C. Magnesium disorders can cause calcium pyrophosphate deposition disease: A case report and literature review. Eur J Rheumatol 2017; 5:53-57. [PMID: 29657876 DOI: 10.5152/eurjrheum.2017.16116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 03/16/2017] [Indexed: 01/15/2023] Open
Abstract
Calcium pyrophosphate deposition (CPPD) disease, also known as pseudogout, is one of the most common forms of inflammatory arthritis. A variety of comorbidities and metabolic conditions have been recognized to predispose to CPPD. We describe here a patient with chronic CPP arthritis due to hypomagnesemia, which is one of the metabolic etiologies associated with CPPD, especially in younger patients. We also performed a literature search and reviewed all reported cases of CPPD disease associated with hypomagnesemia. All cases of hypomagnesemia and its etiologies leading to CPP arthropathy identified in the literature by this systematic search are summarized in this paper.
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Affiliation(s)
- Akanksha Joshi
- Division of Rheumatology, Department of Internal Medicine, University of Missouri, Columbia, MO, USA
| | - Chokkalingam Siva
- Division of Rheumatology, Department of Internal Medicine, University of Missouri, Columbia, MO, USA
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Oronsky B, Caroen S, Oronsky A, Dobalian VE, Oronsky N, Lybeck M, Reid TR, Carter CA. Electrolyte disorders with platinum-based chemotherapy: mechanisms, manifestations and management. Cancer Chemother Pharmacol 2017; 80:895-907. [PMID: 28730291 PMCID: PMC5676816 DOI: 10.1007/s00280-017-3392-8] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 07/10/2017] [Indexed: 12/15/2022]
Abstract
Platinum chemotherapy, particularly cisplatin, is commonly associated with electrolyte imbalances, including hypomagnesemia, hypokalemia, hypophosphatemia, hypocalcemia and hyponatremia. The corpus of literature on these dyselectrolytemias is large; the objective of this review is to synthesize the literature and summarize the mechanisms responsible for these particular electrolyte disturbances in the context of platinum-based treatment as well as to present the clinical manifestations and current management strategies for oncologists and primary care physicians, since the latter are increasingly called on to provide care for cancer patients with medical comorbidities. Correct diagnosis and effective treatment are essential to improved patient outcomes.
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Affiliation(s)
- Bryan Oronsky
- EpicentRx Inc, 4445 Eastgate Mall, Suite 200, San Diego, CA, 92121, USA.
| | - Scott Caroen
- EpicentRx Inc, 4445 Eastgate Mall, Suite 200, San Diego, CA, 92121, USA
| | - Arnold Oronsky
- InterWest Partners, 2710 Sand Hill Road #200, Menlo Park, CA, 94025, USA
| | - Vaughn E Dobalian
- Beaches Family Medicine, 465 3rd St N, Jacksonville Beach, FL, 32250, USA
| | - Neil Oronsky
- CFLS Data, 800 W El Camino Real, Suite 180, Mountain View, CA, 94040, USA
| | - Michelle Lybeck
- EpicentRx Inc, 4445 Eastgate Mall, Suite 200, San Diego, CA, 92121, USA
| | - Tony R Reid
- Moores Cancer Center, University of California San Diego, 3855 Health Sciences Dr, La Jolla, CA, 92093, USA
| | - Corey A Carter
- Walter Reed National Military Medical Center, 8901 Wisconsin Ave, Bethesda, MD, 20889, USA
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Kumar G, Solanki MH, Xue X, Mintz R, Madankumar S, Chatterjee PK, Metz CN. Magnesium improves cisplatin-mediated tumor killing while protecting against cisplatin-induced nephrotoxicity. Am J Physiol Renal Physiol 2017; 313:F339-F350. [PMID: 28424213 DOI: 10.1152/ajprenal.00688.2016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 04/06/2017] [Accepted: 04/17/2017] [Indexed: 11/22/2022] Open
Abstract
Approximately 30% of all cancer patients treated with cisplatin, a widely used broad-spectrum chemotherapeutic agent, experience acute kidney injury (AKI). Almost all patients receiving cisplatin have magnesium (Mg) losses, which are proposed to aggravate AKI. Currently, there are no methods to successfully treat or prevent cisplatin-AKI. Whereas Mg supplementation has been shown to reduce AKI in experimental models and several small clinical trials, the effects of Mg status on tumor outcomes in immunocompetent tumor-bearing mice and humans have not been investigated. The purpose of this study was to further examine the effects of Mg deficiency (±Mg supplementation) on cisplatin-mediated AKI and tumor killing in immunocompetent mice bearing CT26 colon tumors. Using a model where cisplatin alone (20 mg/kg cumulative dose) produced minimal kidney injury, Mg deficiency significantly worsened cisplatin-mediated AKI, as determined by biochemical markers (blood urea nitrogen and plasma creatinine) and histological renal changes, as well as markers of renal oxidative stress, inflammation, and apoptosis. By contrast, Mg supplementation blocked cisplatin-induced kidney injury. Using LLC-PK1 renal epithelial cells, we observed that Mg deficiency or inhibition of Mg uptake significantly enhanced cisplatin-induced cytotoxicity, whereas Mg supplementation protected against cytotoxicity. However, neither Mg deficiency nor inhibition of Mg uptake impaired cisplatin-mediated killing of CT26 tumor cells in vitro. Mg deficiency was associated with significantly larger CT26 tumors in BALB/c mice when compared with normal-fed control mice, and Mg deficiency significantly reduced cisplatin-mediated tumor killing in vivo. Finally, Mg supplementation did not compromise cisplatin's anti-tumor efficacy in vivo.
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Affiliation(s)
- Gopal Kumar
- Elmezzi Graduate School of Molecular Medicine, Northwell Health, Manhasset, New York
| | - Malvika H Solanki
- Department of Pathology and Laboratory Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Xiangying Xue
- The Center for Biomedical Sciences, Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York; and
| | - Rachel Mintz
- The Center for Biomedical Sciences, Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York; and
| | - Swati Madankumar
- The Center for Biomedical Sciences, Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York; and
| | - Prodyot K Chatterjee
- The Center for Biomedical Sciences, Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York; and
| | - Christine N Metz
- Elmezzi Graduate School of Molecular Medicine, Northwell Health, Manhasset, New York; .,The Center for Biomedical Sciences, Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York; and.,Hofstra-Northwell School of Medicine, Hempstead, New York
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Abstract
BACKGROUND Sickle cell disease is an autosomal recessive inherited haemoglobinopathy which causes painful vaso-occlusive crises due to sickle red blood cell dehydration. Vaso-occlusive crises are common painful events responsible for a variety of clinical complications; overall mortality is increased and life expectancy decreased compared to the general population. Experimental studies suggest that intravenous magnesium has proven to be well-tolerated in individuals hospitalised for the immediate relief of acute (sudden onset) painful crisis and has the potential to decrease the length of hospital stay. Some in vitro studies and open studies of long-term oral magnesium showed promising effect on pain relief but failed to show its efficacy. The studies show that oral magnesium therapy may prevent sickle red blood cell dehydration and prevent recurrent painful episodes. There is a need to access evidence for the impact of oral and intravenous magnesium effect on frequency of pain, length of hospital stay and quality of life. OBJECTIVES To evaluate the effects of short-term intravenous magnesium on the length of hospital stay and quality of life in children and adults with sickle cell disease. To determine the effects of long-term oral magnesium therapy on the frequency of painful crises and the quality of life in children and adults with sickle cell disease. SEARCH METHODS We searched the Cochrane Haemoglobinopathies Trials Register, compiled from electronic database searches and handsearching of journals and conference abstract books.Date of last search of the Cochrane Cystic Fibrosis and Genetic Disorders Group's Haemoglobinopathies Trials Register: 01 December 2016.Date of last search of other resources (clinical trials registries): 29 March 2017. SELECTION CRITERIA We searched for published and unpublished randomized controlled studies of oral or intravenous magnesium compared to placebo or no magnesium. DATA COLLECTION AND ANALYSIS Authors independently assessed the study quality and extracted the data using standard Cochrane methodologies. MAIN RESULTS We included five randomized placebo-controlled studies with a total of 386 participants (aged three to 53 years). Two shorter parallel studies (n = 306) compared intravenous magnesium sulphate to placebo (normal saline) for admission to hospital due to a vaso-occlusive crisis, for which we were able to analyse data. The quality of evidence was moderate for studies presenting this comparison mainly due to limitations due to risk of bias and imprecision. Two of the three longer-term studies comparing oral magnesium pidolate to placebo had a cross-over design. The third was a parallel factorial study which compared hydroxyurea and oral magnesium to each other and to placebo over a longer period of time; we only present the comparison of oral magnesium to placebo from this study. The quality of evidence was very low with uncertainty of the estimation.The eight-hourly dose levels in the two studies of intravenous magnesium were different; one used 100 mg/kg while the second used 40 mg/kg. Only one of these studies (n = 104) reported the mean daily pain score while hospitalised (a non-significant difference between groups, moderate quality evidence). The second study (n = 202) reported a number of child- and parent-reported quality of life scores. None of the scores showed any difference between treatment groups (low quality evidence). Data from one study (n = 106) showed no difference in length of stay in hospital between groups (low quality evidence). Both studies reported on adverse events, but not defined by severity as we had planned. One study showed significantly more participants receiving intravenous magnesium experienced warmth at infusion site compared to placebo; there were no differences between groups for other adverse events (low quality evidence).Three studies (n = 80) compared oral magnesium pidolate to placebo. None of them reported data which we were able to analyse. One study (n = 24) reported on the number of painful days and stated there was no difference between two groups (low quality evidence). None of the studies reported on quality of life or length of hospital stay. Two studies (n = 68) reported there were no differences in levels of magnesium in either plasma or red blood cells (moderate quality evidence). Two studies (n = 56) reported adverse events. One reported episodes of mild diarrhoea and headache, all of which resolved without stopping treatment. The second study reported adverse events as gastrointestinal disorders, headache or migraine, upper respiratory infections and rash; which were all evenly distributed across treatment groups (moderate quality evidence). AUTHORS' CONCLUSIONS Moderate to low quality evidence showed neither intravenous magnesium and oral magnesium therapy has an effect on reducing painful crisis, length of hospital stay and changing quality of life in treating sickle cell disease. Therefore, no definitive conclusions can be made regarding its clinical benefit. Further randomized controlled studies, perhaps multicentre, are necessary to establish whether intravenous and oral magnesium therapies have any effect on improving the health of people with sickle cell disease.
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Affiliation(s)
- Nan Nitra Than
- Melaka‐Manipal Medical CollegeDepartment of Community MedicineJalan Batu HamparBukit BaruMelakaMalaysia75150
| | - Htoo Htoo Kyaw Soe
- Melaka‐Manipal Medical CollegeDepartment of Community MedicineJalan Batu HamparBukit BaruMelakaMalaysia75150
| | - Senthil K Palaniappan
- NHS trustDepartment of Medicine, University Hospitals of LeicesterLeicester Royal InfirmaryLeicesterUKLE1 5WW
| | - Adinegara BL Abas
- Melaka‐Manipal Medical CollegeDepartment of Community MedicineJalan Batu HamparBukit BaruMelakaMalaysia75150
| | - Lucia De Franceschi
- University of Verona‐AOUI VeronaDepartment of MedicinePolilinico GB RossiVeronaItaly37134
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Hou T, Liu W, Shi W, Ma Z, He H. Desalted duck egg white peptides promote calcium uptake by counteracting the adverse effects of phytic acid. Food Chem 2017; 219:428-435. [DOI: 10.1016/j.foodchem.2016.09.166] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 09/22/2016] [Accepted: 09/27/2016] [Indexed: 11/26/2022]
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Tsao YT, Shih YY, Liu YA, Liu YS, Lee OK. Knockdown of SLC41A1 magnesium transporter promotes mineralization and attenuates magnesium inhibition during osteogenesis of mesenchymal stromal cells. Stem Cell Res Ther 2017; 8:39. [PMID: 28222767 PMCID: PMC5320718 DOI: 10.1186/s13287-017-0497-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 01/09/2017] [Accepted: 02/09/2017] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Magnesium is essential for numerous physiological functions. Magnesium exists mostly in bone and the amount is dynamically regulated by skeletal remodeling. Accelerating bone mass loss occurs when magnesium intake is insufficient; whereas high magnesium could lead to mineralization defects. However, the underlying magnesium regulatory mechanisms remain elusive. In the present study, we investigated the effects of high extracellular magnesium concentration on osteogenic differentiation of mesenchymal stromal/stem cells (MSCs) and the role of magnesium transporter SLC41A1 in the mineralization process. METHODS Murine MSCs derived from the bone marrow of BALB/c mouse or commercially purchased human MSCs were treated with osteogenic induction medium containing 5.8 mM magnesium chloride and the osteogenic differentiation efficiency was compared with that of MSCs in normal differentiation medium containing 0.8 mM magnesium chloride by cell morphology, gene expression profile of osteogenic markers, and Alizarin Red staining. Slc41a1 gene knockdown in MSCs was performed by siRNA transfection using Lipofectamine RNAiMAX, and the differentiation efficiency of siRNA-treated MSCs was also assessed. RESULTS High concentration of extracellular magnesium ion inhibited mineralization during osteogenic differentiation of MSCs. Early osteogenic marker genes including osterix, alkaline phosphatase, and type I collagen were significantly downregulated in MSCs under high concentration of magnesium, whereas late marker genes such as osteopontin, osteocalcin, and bone morphogenetic protein 2 were upregulated with statistical significance compared with those in normal differentiation medium containing 0.8 mM magnesium. siRNA treatment targeting SLC41A1 magnesium transporter, a member of the solute carrier family with a predominant Mg2+ efflux system, accelerated the mineralization process and ameliorated the inhibition of mineralization caused by high concentration of magnesium. High concentration of magnesium significantly upregulated Dkk1 gene expression and the upregulation was attenuated after the Slc41a1 gene was knocked down. Immunofluorescent staining showed that Slc41a1 gene knockdown promoted the translocation of phosphorylated β-catenin into nuclei. In addition, secreted MGP protein was elevated after Slc41a1 was knocked down. CONCLUSIONS High concentration of extracellular magnesium modulates gene expression of MSCs during osteogenic differentiation and inhibits the mineralization process. Additionally, we identified magnesium transporter SLC41A1 that regulates the interaction of magnesium and MSCs during osteogenic differentiation. Wnt signaling is suggested to be involved in SLC41A1-mediated regulation. Tissue-specific SLC41A1 could be a potential treatment for bone mass loss; in addition, caution should be taken regarding the role of magnesium in osteoporosis and the design of magnesium alloys for implantation.
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Affiliation(s)
- Yu-Tzu Tsao
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, 11221 Taiwan
- Division of Nephrology, Department of Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan, 33004 Taiwan
| | - Ya-Yi Shih
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, 11221 Taiwan
| | - Yu-An Liu
- Stem Cell Research Center, National Yang-Ming University, Rm. 825, Chih-Teh Building, No.322, Sec.2, Shih-Pai Rd, Taipei, 11221 Taiwan
| | - Yi-Shiuan Liu
- Stem Cell Research Center, National Yang-Ming University, Rm. 825, Chih-Teh Building, No.322, Sec.2, Shih-Pai Rd, Taipei, 11221 Taiwan
| | - Oscar K. Lee
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, 11221 Taiwan
- Stem Cell Research Center, National Yang-Ming University, Rm. 825, Chih-Teh Building, No.322, Sec.2, Shih-Pai Rd, Taipei, 11221 Taiwan
- Taipei City Hospital, 145 Zhengzhou Road, Taipei, 10341 Taiwan
- Department of Medical Research, Taipei Veterans General Hospital, Taipei, 11217 Taiwan
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Tsiamadis V, Banos G, Panousis N, Kritsepi-Konstantinou M, Arsenos G, Valergakis GE. Genetic parameters of subclinical macromineral disorders and major clinical diseases in postparturient Holstein cows. J Dairy Sci 2016; 99:8901-8914. [PMID: 27614830 DOI: 10.3168/jds.2015-10789] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 07/18/2016] [Indexed: 11/19/2022]
Abstract
The main objective of this study was to assess the genetic parameters of subclinical disorders associated with subclinical hypocalcemia, hypophosphatemia, subclinical hypomagnesemia, hypokalemia, and hyperphosphatemia, as well as major clinical diseases after calving in Holstein cows. The secondary objective was to estimate the associated genetic and phenotypic correlations among these subclinical and clinical conditions after calving in Holstein cows. The study was conducted in 9dairy herds located in Northern Greece. None of the herds used any kind of preventive measures for milk fever (MF). A total of 1,021 Holstein cows with pedigree information were examined from November 2010 until November 2012. The distribution across parities was 466 (parity 1), 242 (parity 2), 165 (parity 3), and 148 (parity 4 and above) cows. All cows were subjected to a detailed clinical examination and blood was sampled on d 1, 2, 4, and 8 after calving. Serum concentrations of Ca, P, Mg, and K were measured in all samples, whereas β-hydroxybutyrate (BHB) was measured only for d 8. The final data set included 4,064 clinical and 16,848 biochemical records (4,020 Ca, 4,019 P, 4,020Mg, 3,792K, and 997 BHB). Data of 1,988 observations of body condition score at d 1 and 8 were also available. All health traits were analyzed with a univariate random regression model. The genetic analysis for macromineral-related disorders included 986 cows with no obvious signs of MF (35 cows with MF were excluded). Analysis for other health traits included all 1,021 cows. A similar single record model was used for the analysis of BHB. Genetic correlations among traits were estimated with a series of bivariate analyses. Statistically significant daily heritabilities of subclinical hypocalcemia (0.13-0.25), hypophosphatemia (0.18-0.33), subclinical hypomagnesemia (0.11-0.38), and hyperphosphatemia (0.14-0.22) were low to moderate, whereas that of hypokalemia was low (0.08-0.10). The heritability of body condition score was 0.20±0.10. Statistically significant daily heritabilities of clinical diseases were those of MF (0.07-0.11), left displaced abomasum (0.19-0.31), and mastitis (0.15-0.41). Results suggest that these health disorders are heritable traits and could be minimized with proper genetic selection. Statistically significant phenotypic correlations were estimated for the first time between macromineral concentrations and almost all transition cow metabolic and infectious health disorders.
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Affiliation(s)
- V Tsiamadis
- Department of Animal Production, Faculty of Veterinary Medicine, Box 393, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - G Banos
- Department of Animal Production, Faculty of Veterinary Medicine, Box 393, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece; Roslin Institute, Scotland's Rural College, Edinburgh, Scotland, UK EH25 9RG
| | - N Panousis
- Clinic of Farm Animals, Department of Clinics, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - M Kritsepi-Konstantinou
- Diagnostic Laboratory, Department of Clinics, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - G Arsenos
- Department of Animal Production, Faculty of Veterinary Medicine, Box 393, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - G E Valergakis
- Department of Animal Production, Faculty of Veterinary Medicine, Box 393, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
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