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Magnesium

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https://www.readbyqxmd.com/read/28448129/alkaline-earth-derivatives-of-the-reactive-hb-c6f5-3-anion
#1
Mathew D Anker, Merle Arrowsmith, Rory L Arrowsmith, Michael S Hill, Mary F Mahon
The β-diketiminato magnesium amidoboranes [HC{(Me)CNDipp}2Mg(NMe2BH2NMe2·BH3)] and [HC{(t-Bu)CNDipp}2Mg(NMe2·BH3)] are readily converted to the corresponding derivatives of the [HB(C6F5)3](-) anion by treatment with B(C6F5)3. The bis(borohydride) derivatives of the heaviest alkaline-earth elements, strontium and barium, may be similarly synthesized by reaction of strontium or barium dimethylamidoboranes and B(C6F5)3 and by metathesis reactions of either SrI2 or BaI2 and 2 molar equiv of K(HB(C6F5)3). The strontium and barium compounds have been fully characterized in solution and in the solid state as the respective tris(diethyl ether) and tetrakis(tetrahydrofuran) adducts...
April 27, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28448083/are-dietary-supplements-and-nutraceuticals-effective-for-musculoskeletal-health-and-cognitive-function-a-scoping-review
#2
G Iolascon, R Gimigliano, M Bianco, A De Sire, A Moretti, A Giusti, N Malavolta, S Migliaccio, A Migliore, N Napoli, P Piscitelli, G Resmini, U Tarantino, F Gimigliano
OBJECTIVE: The aim of our scoping review was to summarize the state of the art regarding micronutrients in order to identify which of them might effectively improve health status in the areas typically impaired in older people: bone, skeletal muscle, and cognitive function. DESIGN: Scoping review. METHODS: The Italian Study Group on Healthy Aging by Nutraceuticals and Dietary Supplements (HANDS) performed this scoping review, based on the following steps: doing a list of micronutrients related with musculoskeletal or cognitive functions, included in dietary supplements and nutraceuticals commercialized in Italy; planning a research on PubMed, according to an evidence-based approach, in order to the most relevant positive study for each micronutrient into each of the three areas involved (bone, skeletal muscle and cognitive function); identifying the micronutrients effective in maintaining or achieving an adequate health status in older people, specifying the effective and safe daily doses, according to the selected studies...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/28447882/development-of-novel-amisulpride-loaded-solid-self-nanoemulsifying-tablets-preparation-and-pharmacokinetic-evaluation-in-rabbits
#3
Wael Gamal, Rania H Fahmy, Magdy I Mohamed
OBJECTIVE: the current investigation is focused on the formulation and in-vivo evaluation of optimized solid-self-nanoemulsifying drug delivery systems (S-SNEDDS) of amisulpride (AMS) for improving its oral dissolution and bioavailability. METHODS: liquid SNEDDS (L-SNEDDS) composed of Capryol™ 90 (oil), Cremophor® RH40 (surfactant) and Transcutol(®) HP (co-surfactant) were transformed to solid systems via physical adsorption onto magnesium aluminometasilicate (Neusilin US2)...
April 27, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/28447697/magnesium-porphyrins-with-relevance-to-chlorophylls
#4
Karishma Devi Borah, Jagannath Bhuyan
A review on the chemistry of magnesium porphyrins, which have significant interest owing to the relevance to chlorophyll molecules, is presented with emphasis on bicarbonate adducts of magnesium porphyrin and chlorophyll. The chemistry of 26 unique magnesium porphyrins is described as review articles on synthetic magnesium porphyrins are limited. Interest is given to the electron transfer reactions of magnesium porphyrins in artificial photosynthetic systems. The magnesium porphyrins are described considering coordination chemistry, structural aspects, electronic and electrochemical properties...
April 27, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28446830/bryophyllum-pinnatum-leaf-extracts-prevent-formation-of-renal-calculi-in-lithiatic-rats
#5
Mahendra Yadav, Vijay D Gulkari, Manish M Wanjari
BACKGROUND: Bryophyllum pinnatum, commonly known as Pattharcaṭṭa, is used traditionally in ethnomedicinal practices for the treatment of kidney stone and urinary insufficiency. AIM: The present study evaluated the effect of Bryophyllum pinnatum on ethylene glycol (EG)-induced renal calculi in rats. MATERIALS AND METHODS: Renal calculi were induced in rats by administration of 0.75% EG in drinking water and co-treated orally with standard drug, Cystone (750 mg/kg), or alcoholic and hydro-alcoholic extracts in doses of 100, 200 and 400 mg/kg for 28 days...
October 2016: Ancient Science of Life
https://www.readbyqxmd.com/read/28446750/expandable-mg-based-helical-stent-assessment-using-static-dynamic-and-porcine-ex-vivo-models
#6
Youngmi Koo, Tarannum Tiasha, Vesselin N Shanov, Yeoheung Yun
A bioresorbable metallic helical stent was explored as a new device opportunity (magnesium scaffold), which can be absorbed by the body without leaving a trace and simultaneously allowing restoration of vasoreactivity with the potential for vessel remodeling. In this study, developed Mg-based helical stent was inserted and expanded in vessels with subsequent degradation in various environments including static, dynamic, and porcine ex vivo models. By assessing stent degradation in three different environments, we observed: (1) stress- and flow-induced degradation; (2) a high degradation rate in the dynamic reactor; (3) production of intermediate products (MgO/Mg(OH)2 and Ca/P) during degradation; and (4) intermediate micro-gas pocket formation in the neighboring tissue ex vivo model...
April 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28445426/the-effects-of-magnesium-supplementation-on-subjective-anxiety-and-stress-a-systematic-review
#7
REVIEW
Neil Bernard Boyle, Clare Lawton, Louise Dye
BACKGROUND: Anxiety related conditions are the most common affective disorders present in the general population with a lifetime prevalence of over 15%. Magnesium (Mg) status is associated with subjective anxiety, leading to the proposition that Mg supplementation may attenuate anxiety symptoms. This systematic review examines the available evidence for the efficacy of Mg supplementation in the alleviation of subjective measures of anxiety and stress. METHODS: A systematic search of interventions with Mg alone or in combination (up to 5 additional ingredients) was performed in May 2016...
April 26, 2017: Nutrients
https://www.readbyqxmd.com/read/28444586/cereal-phytases-and-their-importance-in-improvement-of-micronutrients-bioavailability
#8
REVIEW
Amit Vashishth, Sewa Ram, Vikas Beniwal
Phytic acid is a main reservoir of phosphorous (P) in plants and contributes to about 80% of the total P in cereal seeds. However, it is well known to possess anti-nutritional behavior. Because it has strong affinity to chelate divalent ions e.g. calcium, magnesium, and especially with iron and zinc. Therefore, it is extremely poor as a dietary source of P. To enhance bio-availability of micronutrients, an enzyme namely phytase is known to hydrolyze phytic acid. Unfortunately, phytase is not produced in the stomach of monogastric animals and humans...
May 2017: 3 Biotech
https://www.readbyqxmd.com/read/28444546/continuous-magnesium-infusions-in-the-management-of-systemic-anti-cancer-therapy-related-hypomagnesaemia
#9
Hector Mateo-Carrasco, Oluwakemi Kostrzynski, Onyinye Ndefo, Simon Stapley, Elaine Davies, Roshan Agarwal
Background Hypomagnesaemia is a relatively-common side effect of some systemic anti-cancer therapies (SACT). Oral and intravenous magnesium (given as injections or short infusions) have problems arising from their poor tolerability, and need for frequent administrations, respectively. Objective Assessing the effectiveness and safety of weekly continuous magnesium infusions (CMI) in the management of SACT-related hypomagnesaemia. Methods CMIs (initiated at 10 mmol/day and up-titrated subject to response) were prescribed to patients with ≥3 magnesium readings <0...
April 25, 2017: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/28444499/hair-trace-element-and-electrolyte-content-in-women-with-natural-and-in-vitro-fertilization-induced-pregnancy
#10
Anatoly V Skalny, Alexey A Tinkov, Irina Voronina, Olga Terekhina, Margarita G Skalnaya, Yulia Kovas
The objective of the present study was to perform comparative analysis of hair trace element content in women with natural and in vitro fertilization (IVF)-induced pregnancy. Hair trace element content in 33 women with IVF-induced pregnancy and 99 age- and body mass index-matched control pregnant women (natural pregnancy) was assessed using inductively coupled plasma mass spectrometry. The results demonstrated that IVF-pregnant women are characterized by significantly lower hair levels of Cu, Fe, Si, Zn, Ca, Mg, and Ba at p < 0...
April 25, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28443884/monolithic-porous-magnesium-silicide
#11
N Hayati-Roodbari, R J F Berger, J Bernardi, S Kinge, N Hüsing, M S Elsaesser
Macroporous magnesium silicide monoliths were successfully prepared by a two-step synthesis procedure. The reaction of gaseous magnesium vapor with macro-/mesoporous silicon, which was generated from hierarchically organized meso-/macroporous silica by a magnesiothermic reduction reaction, resulted in monolithic magnesium silicide with a cellular, open macroporous structure. By adjusting the reaction conditions, such as experimental set-up, temperature and time, challenges namely loss of porosity or phase purity of Mg2Si were addressed and monolithic magnesium silicide with a cellular network builtup was obtained...
April 26, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28443859/adamantyl-metal-complexes-new-routes-to-adamantyl-anions-and-new-transmetallations
#12
David Armstrong, Fioralba Taullaj, Kamalpreet Singh, Bijan Mirabi, Alan J Lough, Ulrich Fekl
New routes to 1- and 2-adamantyl anion equivalents are described, starting from commercially available 1- and 2-adamantylzinc bromides and employing reducing metals (Mg; Li). Adamantylmagnesium bromides (both 1-AdMgBr and 2-AdMgBr) can reliably be produced via reaction of the corresponding adamantylzinc bromides with excess magnesium metal. Reactions of adamantylzinc bromides with stoichiometic lithium biphenylide or lithium 2,2'-bipyridylide afford the new diadamantylzinc species, 1-Ad2Zn and 2-Ad2Zn, isolable free of solvent and salt impurities...
April 26, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28442565/mind-the-magnesium-in-dantrolene-suppression-of-malignant-hyperthermia
#13
Stephen C Cannon
No abstract text is available yet for this article.
April 25, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28440405/copy-number-variation-analysis-in-familial-nonsyndromic-congenital-anomalies-of-the-kidney-and-urinary-tract-evidence-for-the-causative-role-of-a-transposable-element-associated-genomic-rearrangement
#14
Ekaterini Siomou, Artemis G Mitsioni, Vasileios Giapros, Ioanna Bouba, Dimitrios Noutsopoulos, Ioannis Georgiou
Most congenital anomalies of the kidney and urinary tract (CAKUT) are sporadic, but familial occurrence has been described, suggesting a genetic contribution. Copy‑number variations (CNVs) were detected in patients with CAKUT to identify possible novel genomic regions associated with CAKUT. CNVs were investigated in 7 children with CAKUT from three unrelated families using array comparative genomic hybridization: female monozygotic twins with bilateral duplex collecting system/vesicoureteral reflux (VUR)/unilateral renal hypodyspasia (URHD); two male siblings with VUR/URHD; 3 male second cousins, one with bilateral VUR/URHD, one with bilateral VUR and one with ureterovesical junction obstruction (UVJO)...
April 12, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28439589/magnesium-ion-mobility-in-post-spinels-accessible-at-ambient-pressure
#15
Daniel C Hannah, Gopalakrishnan Sai Gautam, Pieremanuele Canepa, Ziqin Rong, Gerbrand Ceder
We propose that Ti-containing post-spinels may offer a practically-accessible route to fast multivalent ion diffusion in close-packed oxide lattices, with the caveat that substantial thermodynamic driving forces for conversion reactions exist.
April 25, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28438887/a-systematic-review-of-strategies-to-prevent-cisplatin-induced-nephrotoxicity
#16
Daniel J Crona, Aimee Faso, Tomohiro F Nishijima, Kathleen A McGraw, Matthew D Galsky, Matthew I Milowsky
INTRODUCTION: Cisplatin, a platinum-based antineoplastic agent, is the cornerstone for the treatment of many malignancies. Nephrotoxicity is the primary dose-limiting toxicity, and various hydration regimens and supplementation strategies are used to prevent cisplatin-induced kidney injury. However, evidence-based recommendations on specific hydration regimens are limited. A systematic review was performed to evaluate clinical studies that have examined hydration and supplementation strategies to prevent cisplatin-induced nephrotoxicity...
April 24, 2017: Oncologist
https://www.readbyqxmd.com/read/28438825/beyond-use-dating-of-lidocaine-alone-and-in-two-magic-mouthwash-preparations
#17
Loren Madden Kirk, Stacy D Brown, Yao Luu, Amanda Ogle, Jessica Huffman, Paul O Lewis
PURPOSE: Beyond-use dating (BUD) of lidocaine alone and in two "magic mouthwash" preparations stored in amber oral syringes at room temperature was determined. METHODS: Two formulations of mouthwash containing oral topical lidocaine 2% (viscous), diphenhydramine 2.5 mg/mL, and aluminum hydroxide-magnesium hydroxide-simethicone were prepared in 1:1:1 and 1:2.5:2.5 ratios, divided into 3-mL samples, and stored in unit-dose oral amber syringes. Unit-dose single-product lidocaine samples were also prepared to serve as controls and stored in oral amber syringes...
May 1, 2017: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/28438429/association-of-serum-magnesium-level-with-poor-glycemic-control-and-renal-functions-in-nepalese-patients-with-type-2-diabetes-mellitus
#18
Daya Ram Pokharel, Dipendra Khadka, Manoj Sigdel, Naval Kishor Yadav, Ramchandra Kafle, Ravindra Mohan Sapkota, Sanjay Kumar Jha
BACKGROUND: Hypomagnesaemia has been shown to be associated with type 2 diabetes mellitus (T2DM) and its complications. The present study investigated the association of hypomagnesaemia with T2DM and its complications in patients hailed mostly from the western hilly region of Nepal. METHODS: This study was conducted among 150 type 2 diabetic patients and 150 of non-diabetic controls between May to September 2016. Relevant demographic, anthropometric, physiological and biochemical variables were measured using standard protocols...
April 6, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28438367/the-effect-of-dietary-supplements-on-clinical-aspects-of-autism-spectrum-disorder-a-systematic-review-of-the-literature
#19
REVIEW
Maria Gogou, George Kolios
BACKGROUND: Autism spectrum disorder is associated with significant social and financial burden and no definite treatment for this entity has been identified, yet. In recent years there has been an increasing interest in the use of dietary interventions as a complementary therapeutic option for these patients. OBJECTIVE: The aim of this systematic review is to provide high evidence level literature data about the effect of dietary supplements on clinical aspects of children with autism...
April 21, 2017: Brain & Development
https://www.readbyqxmd.com/read/28438148/maternal-blood-cadmium-lead-and-arsenic-levels-nutrient-combinations-and-offspring-birthweight
#20
Yiwen Luo, Lauren E McCullough, Jung-Ying Tzeng, Thomas Darrah, Avner Vengosh, Rachel L Maguire, Arnab Maity, Carmen Samuel-Hodge, Susan K Murphy, Michelle A Mendez, Cathrine Hoyo
BACKGROUND: Cadmium (Cd), lead (Pb) and arsenic (As) are common environmental contaminants that have been associated with lower birthweight. Although some essential metals may mitigate exposure, data are inconsistent. This study sought to evaluate the relationship between toxic metals, nutrient combinations and birthweight among 275 mother-child pairs. METHODS: Non-essential metals, Cd, Pb, As, and essential metals, iron (Fe), zinc (Zn), selenium (Se), copper (Cu), calcium (Ca), magnesium (Mg), and manganese (Mn) were measured in maternal whole blood obtained during the first trimester using inductively coupled plasma mass spectrometry...
April 24, 2017: BMC Public Health
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