keyword
MENU ▼
Read by QxMD icon Read
search

Calcium

keyword
https://www.readbyqxmd.com/read/28821107/relationship-between-multi-scale-structures-and-properties-of-photophobic-films-based-on-hydroxypropyl-methylcellulose-and-monosodium-phosphate
#1
Liang Zhang, Yan Zhao, Jian-Ya Qian, Shan Jiang, Jun Liu, Xiao-Long He
Photophobic (white) films were prepared with hydroxypropyl methylcellulose (HPMC) and monosodium phosphate (NaH2PO4) to overcome the redox reaction induced by titanium dioxide photocatalysis of HPMC/TiO2 white film. What's more, HPMC/NaH2PO4 white film could overcome the drying temperature dependent property of white films based on HPMC and calcium salts. Attenuated total reflection Fourier transform infrared spectroscopy, wide angel X-ray diffraction, small angle X-ray scattering, scanning electron microscope and texture analyzer were used to investigate the effect of NaH2PO4 on the short-range, supra-molecular structures and properties of HPMC film...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821089/preparation-and-evaluation-of-chitosan-alginate-porous-microspheres-bletilla-striata-polysaccharide-composite-hemostatic-sponges
#2
Chao Wang, Wenfeng Luo, Puwang Li, Sidong Li, Ziming Yang, Zhang Hu, Yangyang Liu, Ningjian Ao
We prepared a novel hemostatic material using chitosan (CS), alginate, and Bletilla striata, which showed good biocompatibility and hemostatic properties. Alginate-calcium porous microspheres (Alg) were prepared by emulsification/cross-linking methods, and Bletilla striata polysaccharide (Bsp) was extracted from the tubers by water extraction and alcohol precipitation. To improve the water absorption and accelerate the blood coagulation, Alg and Bsp were mixed with chitosan solution to form CS/Alg and CS/Alg/Bsp composite sponges by lyophilization...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821071/on-the-use-of-ion-crosslinked-nanocellulose-hydrogels-for-wound-healing-solutions-physicochemical-properties-and-application-oriented-biocompatibility-studies
#3
Alex Basu, Jonas Lindh, Eva Ålander, Maria Strømme, Natalia Ferraz
Calcium ion-crosslinked nanofibrillated cellulose (NFC) hydrogels were investigated as potential materials for wound healing dressings. The physicochemical properties of the hydrogels were examined by rheology and water retention tests. Skin cells and monocytes were selected for application-oriented biocompatibility studies. The NFC hydrogels presented entangled fibrous networks and solid-like behavior. Water retention tests showed the material´s potential to maintain a suitable moist environment for different type of wounds...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821040/characteristics-of-a-free-standing-film-from-banana-pseudostem-nanocellulose-generated-from-tempo-mediated-oxidation
#4
R H Fitri Faradilla, George Lee, Ji-Youn Arns, Justine Roberts, Penny Martens, Martina H Stenzel, Jayashree Arcot
Demand for bioplastic, especially for food packaging, increases as the consumers become more aware of the destructive effect of non-biodegradable plastics. Nanocellulose from banana pseudo-stem has great potential to be formed as a bioplastic. This study aimed to characterize the free-standing film produced from banana pseudo-stem nanocellulose that was prepared by TEMPO-mediated oxidation. The film was found containing calcium oxalate crystals, which most likely influenced the film transparency and possibly affected the contact angle and tensile strength...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821025/fabrication-and-characterization-of-water-dispersed-chitosan-nanofiber-poly-ethylene-glycol-diacrylate-calcium-phosphate-based-porous-composites
#5
Sachiko Nitta, Ayaka Komatsu, Taisei Ishii, Masatoshi Ohnishi, Atsuko Inoue, Hiroyuki Iwamoto
We evaluated the capacity of chitosan nanofiber (CNF)- and poly(ethylene glycol) (PEG)-based hydrogel/calcium phosphate hybrid (CNF-PEG/CaP) composites to act as scaffolding materials. CNF-PEG/CaP composites were fabricated by mineralization of CNF-PEG hydrogels using an alternate soaking method. The amount of CaP mineralized on CNF-PEG hydrogels increased as the ratio of CNF in the CNF-PEG hydrogel increased. Young's modulus of CNF-PEG/CaP hydrogels was enhanced by increase in CNF ratio. It was further confirmed that osteoblasts embedded on the CNF-PEG/CaP composites were viable after incubation for 5days and firmly attached to the CaP porous layer, forming an extensive cell-scaffold leading to cell-cell interactions...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820965/systematic-identification-of-mcu-modulators-by-orthogonal-interspecies-chemical-screening
#6
Daniela M Arduino, Jennifer Wettmarshausen, Horia Vais, Paloma Navas-Navarro, Yiming Cheng, Anja Leimpek, Zhongming Ma, Alba Delrio-Lorenzo, Andrea Giordano, Cecilia Garcia-Perez, Guillaume Médard, Bernhard Kuster, Javier García-Sancho, Dejana Mokranjac, J Kevin Foskett, M Teresa Alonso, Fabiana Perocchi
The mitochondrial calcium uniporter complex is essential for calcium (Ca(2+)) uptake into mitochondria of all mammalian tissues, where it regulates bioenergetics, cell death, and Ca(2+) signal transduction. Despite its involvement in several human diseases, we currently lack pharmacological agents for targeting uniporter activity. Here we introduce a high-throughput assay that selects for human MCU-specific small-molecule modulators in primary drug screens. Using isolated yeast mitochondria, reconstituted with human MCU, its essential regulator EMRE, and aequorin, and exploiting a D-lactate- and mannitol/sucrose-based bioenergetic shunt that greatly minimizes false-positive hits, we identify mitoxantrone out of more than 600 clinically approved drugs as a direct selective inhibitor of human MCU...
August 17, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28820903/prominent-facilitation-at-beta-and-gamma-frequency-range-revealed-with-physiological-calcium-concentration-in-adult-mouse-piriform-cortex-in-vitro
#7
Marie Gleizes, Simon P Perrier, Caroline Fonta, Lionel G Nowak
Neuronal activity is characterized by a diversity of oscillatory phenomena that are associated with multiple behavioral and cognitive processes, yet the functional consequences of these oscillations are not fully understood. Our aim was to determine whether and how these different oscillatory activities affect short-term synaptic plasticity (STP), using the olfactory system as a model. In response to odorant stimuli, the olfactory bulb displays a slow breathing rhythm as well as beta and gamma oscillations...
2017: PloS One
https://www.readbyqxmd.com/read/28820455/beverage-intake-among-children-associations-with-parent-and-home-related-factors
#8
Arwa Zahid, Cynthia Davey, Marla Reicks
Beverage intake can influence child diet quality in a positive or negative manner depending on the beverage type and amounts consumed. Parenting practices such as role modeling and control of home beverage availability have been associated with child beverage intake, whereas examination of the influence of parental beverage nutrition knowledge has been more limited. The purpose of this study was to examine the relationships between sugar-sweetened and dairy beverage intake among children (9-12 years) and home and parental factors...
August 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28820402/does-signaling-of-estrogen-related-receptors-affect-structure-and-function-of-bank-vole-leydig-cells
#9
P Pawlicki, A Milon, M Zarzycka, J Galas, W Tworzydlo, A Kaminska, L Pardyak, K Lesniak, A Pacwa, B Bilinska, E Gorowska-Wojtowicz, M Kotula-Balak
To get a deeper insight into the function of estrogen-related receptors (ERRs) and dissect underlying mechanism in Leydig cells, ERRs (type α, β and γ) were blocked or activated in testes of adult bank voles (Myodes glareolus) which show seasonal changes in the intratesticular sex hormones level. Both actively reproducing animals (long day conditions; LD) and those with regression of the reproductive system (short day conditions; SD) received intraperitoneal injections of selective ERRα antagonist 3-[4-(2,4-Bis-trifluoromethylbenzyloxy)-3-methoxyphenyl]-2-cyano-N-(5-trifluoromethyl-1,3,4-thiadiazol-2-yl)acrylamide (XCT 790) or selective ERRβ/ERRγ agonist N-(4-(Diethylaminobenzylidenyl)-N'-(4-hydroxybenzoyl)-hydrazine (DY131) (50 μ/kg bw; six doses every other day)...
June 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28820078/effects-of-excitotoxic-lesion-with-inhaled-anesthetics-on-nervous-system-cells-of-rodents
#10
Maria Fernanda Quiroz Padilla, Gemma Guillazo-Blanch, Magdy Sanchez, Maria Andrea Dominguez, Rosa Margaria Gomez
Different anesthesia methods can variably influence excitotoxic lesion effects on the brain. The main purpose of this review is to identify potential differences in the toxicity to nervous system cells of two common inhalation anesthesia methods, isoflurane and sevoflurane, used in combination with an excitotoxic lesion procedure in rodents. The use of bioassays in animal models has provided the opportunity to examine the role of specific molecules and cellular interactions that underlie important aspects of neurotoxic effects relating to calcium homeostasis and apoptosis activation...
August 17, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28819948/the-role-of-selenium-in-thyroid-gland-pathophysiology
#11
Michał Stuss, Marta Michalska-Kasiczak, Ewa Sewerynek
It is now assumed that proper functioning of the thyroid gland (TG), beside iodine, requires also a number of elements, including selenium, iron, zinc, copper, and calcium. In many cases, only an adequate supply of one of these microelements (e.g. iodine) may reveal symptoms resulting from deficits of other microelements (e.g. iron or selenium). Selenium is accounted to the trace elements of key importance for homeostasis of the human system, in particular, for the proper functioning of the immune system and the TG...
2017: Endokrynologia Polska
https://www.readbyqxmd.com/read/28819909/adjunctive-breast-specific-gamma-imaging-for-detecting-cancer-in-women-with-calcifications-at-mammography
#12
Hyun Woo Chung, Young So, Jung-Hyun Yang, Kyoung Sik Park, Young Bum Yoo, Nami Choi, Mi Young Kim, Jayoun Kim, Eun Jeong Lee
BACKGROUND: Mammography detects calcium deposits sensitively, but the specificity for differentiating malignancy from benign calcifications is low. Thus, we investigated whether adjunctive breast-specific gamma imaging (BSGI) has incremental value for detecting cancer in women with suspicious calcifications detected by mammography, and compared BSGI with adjunctive ultrasonography (US). METHODS: The medical records of women without a personal history of breast cancer who underwent mammography for breast evaluation from 2009 to 2014 were reviewed retrospectively...
August 17, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28819908/the-effect-of-cationically-modified-phosphorylcholine-polymers-on-human-osteoblasts-in-vitro-and-their-effect-on-bone-formation-in-vivo
#13
Jonathan M Lawton, Mariam Habib, Bingkui Ma, Roger A Brooks, Serena M Best, Andrew L Lewis, Neil Rushton, William Bonfield
The effect of introducing cationic charge into phosphorylcholine (PC)-based polymers has been investigated in this study with a view to using these materials as coatings to improve bone formation and osseointegration at the bone-implant interface. PC-based polymers, which have been used in a variety of medical devices to improve biocompatibility, are associated with low protein adsorption resulting in reduced complement activation, inflammatory response and cell adhesion. However, in some applications, such as orthopaedics, good integration between the implant and bone is needed to allow the distribution of loading stresses and a bioactive response is required...
August 17, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28819829/surgical-treatment-for-symptomatic-non-ossifying-fibromas-of-the-lower-extremity-with-calcium-sulfate-grafts-in-skeletally-immature-patients
#14
Antonio Andreacchio, Flavia Alberghina, Gianluca Testa, Federico Canavese
BACKGROUND: Non-ossifying fibromas (NOFs) are common benign bone lesions found in children and adolescents. They usually involve metaphysis of long bones, tend to gradually disappear with age and usually do not require surgery, while they are not associated with pathological fractures. The aim of this study was to evaluate the outcome and efficacy of a single-stage procedure, comprising curettage of the lesion and calcium sulfate pellet (CaSP) grafting, in skeletally immature patients with large, symptomatic NOF of the lower extremity, and the possible limitations of the procedure...
August 17, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28819818/diosmin-prevents-isoproterenol-induced-heart-mitochondrial-oxidative-stress-in-rats
#15
S Sharmila Queenthy, P Stanely Mainzen Prince, Babu John
Cardiac mitochondrial oxidative stress causes mitochondrial damage that plays an important role in the pathology of myocardial infarction. The preventive effects of diosmin on cardiac mitochondrial oxidative stress in isoproterenol-induced myocardial infarcted rats were evaluated. Rats were pretreated with diosmin (10 mg/kg body weight) daily for 10 days. Myocardial infarction was induced in rats by isoproterenol (100 mg/kg body weight) injection twice at an interval of 24 h (on 11th and 12th day). Isoproterenol-induced myocardial infarcted rats showed a significant increase in the levels of cardiac diagnostic markers, heart mitochondrial lipid peroxidation, calcium ion, and a significant decrease in the levels of heart mitochondrial glutathione peroxidase, reduced glutathione, glutathione-S-transferase, isocitrate, malate, α-ketoglutarate, and succinate dehydrogenases...
August 17, 2017: Cardiovascular Toxicology
https://www.readbyqxmd.com/read/28819809/effect-of-synthetic-and-natural-derived-novel-endodontic-irrigant-solutions-on-mechanical-properties-of-human-dentin
#16
Doglas Cecchin, Vitória Soares Giaretta, Bérove Granella Cadorin, Matheus Albino Souza, Cristina de Mattos Pimenta Vidal, Ana Paula Farina
This study aimed to evaluate the effects of different synthetic and natural-derived root canal irrigants (6% sodium hypochlorite [NaOCl], 6% calcium hypochlorite [Ca(OCl)2] and 6.5% grape seed extract [GSE]) on dentin mechanical properties (flexural strength, ultimate tensile strength [UTS] and fracture resistance). Rectangular-shaped beams and hourglass-shaped sections obtained from mid-coronal and root dentin were treated with 6% NaOCl, 6% Ca(OCl)2 or 6.5% GSE for 30 min. The irrigant solutions were replaced every 5 min...
August 17, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28819756/nanofibers-grafted-on-titanium-alloy-the-effects-of-fiber-alignment-and-density-on-osteoblast-mineralization
#17
Hsin-Yi Lin, Zhao-Xiang Peng
The surface of medical implant alloy Ti-6Al-4V was chemically modified to allow it to covalently bond with collagen/PVA nanofibers. These nanofibers were successfully attached to the Ti-6Al-4V surface in three different morphologies: randomly oriented high-density fiber, COL(H); randomly oriented low-density fiber, COL(L); and aligned high-density fiber, COL(A). The effects of the morphology of these covalently-bound collagen nanofibers on the growth and differentiation of osteoblasts were studied for 21 days...
August 17, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28819506/-parathyroid-carcinoma-about-a-case-and-review-of-the-literature
#18
Naourez Kolsi, Sondos Jellali, Jamel Koubaa
Parathyroid carcinoma is a very rare malignant tumor of the parathyroid gland. Clinically, this cancer is characterized by the presence of severe primary hyperparathyroidism. Diagnosis is based on histological examination but is not always easy. Surgery is the treatment of choice. We report the case of a 59-year old woman with a personal history of arterial hypertension and of recurrent renal lithiasis, presenting with diffuse bone pain associated with asthenia. Neck examination showed hard basi-cervical swelling with nonpalpable lower edge...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28819274/distinct-carbon-sources-affect-structural-and-functional-maturation-of-cardiomyocytes-derived-from-human-pluripotent-stem-cells
#19
Cláudia Correia, Alexey Koshkin, Patrícia Duarte, Dongjian Hu, Ana Teixeira, Ibrahim Domian, Margarida Serra, Paula M Alves
The immature phenotype of human pluripotent stem cell derived cardiomyocytes (hPSC-CMs) constrains their potential in cell therapy and drug testing. In this study, we report that shifting hPSC-CMs from glucose-containing to galactose- and fatty acid-containing medium promotes their fast maturation into adult-like CMs with higher oxidative metabolism, transcriptional signatures closer to those of adult ventricular tissue, higher myofibril density and alignment, improved calcium handling, enhanced contractility, and more physiological action potential kinetics...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819259/dendritic-calcium-spikes-are-clearly-detectable-at-the-cortical-surface
#20
Mototaka Suzuki, Matthew E Larkum
Cortical surface recording techniques such as EEG and ECoG are widely used for measuring brain activity. The prevailing assumption is that surface potentials primarily reflect synaptic activity, although non-synaptic events may also contribute. Here we show that dendritic calcium spikes occurring in pyramidal neurons (that we showed previously are cognitively relevant) are clearly detectable in cortical surface potentials. To show this we developed an optogenetic, non-synaptic approach to evoke dendritic calcium spikes in vivo...
August 17, 2017: Nature Communications
keyword
keyword
2586
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"