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https://www.readbyqxmd.com/read/28231498/bone-specific-poly-ethylene-sodium-phosphate-bearing-biodegradable-nanoparticles
#1
Yuya Hirano, Yasuhiko Iwasaki
Chemotherapy is the most reliable treatment for osteoporosis and osseous metastases. To facilitate better drug delivery for bone treatments, a novel preparation of polymeric nanoparticles with high affinity to bone has been prepared. Two-step synthesis of cholesteryl-functionalized poly(ethylene sodium phosphate) (Ch-PEPn·Na) was performed via ring-opening polymerization of cyclic phosphoesters and the demethylation. The molecular weight of Ch-PEPn·Na could be well controlled by changing the ratio of cholesterol and cyclic phosphoesters...
February 16, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28231169/an-evaluation-of-alternatives-to-nitrites-and-sulfites-to-inhibit-the-growth-of-salmonella-enterica-and-listeria-monocytogenes-in-meat-products
#2
Alexandre Lamas, José Manuel Miranda, Beatriz Vázquez, Alberto Cepeda, Carlos Manuel Franco
In recent years, the use of nitrites and sulfites as food preservatives has been a cause for concern due to the health problems that these additives can cause in humans. Natural products have been studied as an alternative, but most of them have hardly been applied in the food industry for technological and economic reasons. In this sense, organic salts such as sodium acetate are a good alternative due to their affordability. Thus, this study evaluated the capacity of sodium nitrite, sodium sulfite, a sodium acetate product (TQI C-6000), and chitosan to inhibit two important foodborne pathogens, Salmonella enterica and Listeria monocytogenes...
October 31, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230740/application-of-chromatographic-and-spectroscopic-methods-towards-the-quality-assessment-of-ginger-zingiber-officinale-rhizomes-from-ecological-plantations
#3
Wojciech Koch, Wirginia Kukula-Koch, Zbigniew Marzec, Elwira Kasperek, Lucyna Wyszogrodzka-Koma, Wojciech Szwerc, Yoshinori Asakawa
The usefulness of ginger in the food industry and pharmacotherapy is strictly related to its content of various components. The study elucidates the chemical composition of Zingiber officinale rhizomes cultivated on ecological plantations on Shikoku Island (Japan). GC-MS analysis of terpene content, LC-MS determination of phenolic content, and the determination of 12 elements using AAS spectrometry were performed to give more detailed insight into the samples. Ninety-five percent of terpene composition was elucidated, with zingiberene as the most abundant sesquiterpene (37...
February 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28229641/food-additives-sodium-benzoate-potassium-sorbate-azorubine-and-tartrazine-modify-the-expression-of-nf%C3%AE%C2%BAb-gadd45%C3%AE-and-mapk8-genes
#4
B Raposa, R Pónusz, G Gerencsér, F Budán, Z Gyöngyi, A Tibold, D Hegyi, I Kiss, Á Koller, T Varjas
It has been reported that some of the food additives may cause sensitization, inflammation of tissues, and potentially risk factors in the development of several chronic diseases. Thus, we hypothesized that expressions of common inflammatory molecules - known to be involved in the development of various inflammatory conditions and cancers - are affected by these food additives. We investigated the effects of commonly used food preservatives and artificial food colorants based on the expressions of NFκB, GADD45α, and MAPK8 (JNK1) from the tissues of liver...
September 2016: Physiol Int
https://www.readbyqxmd.com/read/28229251/taurine-ameliorated-homocysteine-induced-h9c2-cardiomyocyte-apoptosis-by-modulating-endoplasmic-reticulum-stress
#5
Zhimin Zhang, Lianyou Zhao, Yanfen Zhou, Xuanhao Lu, Zhengqiang Wang, Jipeng Wang, Wei Li
Homocysteine (Hcy)-triggered endoplasmic reticulum (ER) stress-mediated endothelial cell apoptosis has been suggested as a cause of Hcy-dependent vascular injury. However, whether ER stress is the molecular mechanism linking Hcy and cardiomyocytes death is unclear. Taurine has been reported to exert cardioprotective effects via various mechanisms. However, whether taurine protects against Hcy-induced cardiomyocyte death by attenuating ER stress is unknown. This study aimed to evaluate the opposite effects of taurine on Hcy-induced cardiomyocyte apoptosis and their underlying mechanisms...
February 22, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28229168/cd14-cd16-nonclassical-monocytes-are-associated-with-endothelial-dysfunction-in-patients-with-coronary-artery-disease
#6
Karol Urbanski, Dominik Ludew, Grzegorz Filip, Magdalena Filip, Agnieszka Sagan, Piotr Szczepaniak, Grzegorz Grudzien, Jerzy Sadowski, Barbara Jasiewicz-Honkisz, Tomasz Sliwa, Boguslaw Kapelak, Eilidh McGinnigle, Tomasz Mikolajczyk, Tomasz J Guzik
Endothelial dysfunction and inflammation are key mechanisms of vascular disease. We hypothesised that heterogeneity of monocyte subpopulations may be related to the development of vascular dysfunction in coronary artery disease (CAD). Therefore, we examined the relationships between monocyte subsets (CD14(++)CD16(-) "classical - Mon1", CD14(++)CD16(+) "intermediate - Mon2" and CD14(+)CD16(++) "nonclassical - Mon3"), endothelial function and risk factor profiles in 130 patients with CAD undergoing coronary artery bypass grafting...
February 23, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28228403/antenatal-betamethasone-attenuates-the-angiotensin-1-7-mas-receptor-nitric-oxide-axis-in-isolated-proximal-tubule-cells
#7
Yixin Su, Jianli Bi, Victor M Pulgar, Mark C Chappell, James C Rose
We previously reported a sex-specific effect of antenatal treatment with betamethasone (Beta) on sodium (Na(+)) excretion in adult sheep whereby treated males but not females had an attenuated natriuretic response to Ang-(1-7). The present study determined the Na(+) uptake and nitric oxide (NO) response to low dose Ang-(1-7) (1 pM) in renal proximal tubule cells (RPTC) from adult male and female sheep antenatally exposed to Beta or vehicle. Data were expressed as % of basal uptake or area under the curve (AUC) for Na(+) or % of control for NO...
February 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28228019/equation-of-state-and-shock-compression-of-warm-dense-sodium-a-first-principles-study
#8
Shuai Zhang, Kevin P Driver, François Soubiran, Burkhard Militzer
As one of the simple alkali metals, sodium has been of fundamental interest for shock physics experiments, but knowledge of its equation of state (EOS) in hot, dense regimes is not well known. By combining path integral Monte Carlo (PIMC) results for partially ionized states [B. Militzer and K. P. Driver, Phys. Rev. Lett. 115, 176403 (2015)] at high temperatures and density functional theory molecular dynamics (DFT-MD) results at lower temperatures, we have constructed a coherent equation of state for sodium over a wide density-temperature range of 1...
February 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28226199/mortality-risk-factors-among-patients-with-cirrhosis-and-a-low-%C3%A2-15-meld-sodium-score-an-analysis-of-liver-transplant-allocation-policy-using-aggregated-electronic-health-record-data
#9
K Atiemo, A Skaro, H Maddur, L Zhao, S Montag, L VanWagner, S Goel, A Kho, B Ho, R Kang, J L Holl, M M Abecassis, J Levitsy, D P Ladner
Although the MELDNa score is now used for liver transplant allocation in the United States, mortality prediction may be underestimated by the score. Using aggregated electronic health record data from 7,834 adult patients with cirrhosis, we determined whether the cause of cirrhosis/cirrhosis complications is associated with an increased risk of death among patients with a MELDNa ≤15 and whether patients with the greatest risk of death could benefit from liver transplantation (LT). Over a median follow-up of 2...
February 22, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28225880/the-role-of-oxidative-stress-on-the-pathophysiology-of-metabolic-syndrome
#10
Fabiane Valentini Francisqueti, Lidiana Camargo Talon Chiaverini, Klinsmann Carolo Dos Santos, Igor Otávio Minatel, Carolina Berchieri Ronchi, Artur Junio Togneri Ferron, Ana Lúcia A Ferreira, Camila Renata Corrêa
Metabolic syndrome (MetS) has a high prevalence around the world. Considering the components used to classify MetS, it is clear that it is closely related to obesity. These two conditions begin with an increase in abdominal adipose tissue, which is metabolically more active, containing a greater amount of resident macrophages compared to other fat deposits. Abdominal adiposity promotes inflammation and oxidative stress, which are precursors of various complications involving MetS components, namely insulin resistance, hypertension and hyperlipidemia...
January 1, 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28224920/genetic-engineering-of-the-biosynthesis-of-glycinebetaine-leads-to-alleviate-salt-induced-potassium-efflux-and-enhances-salt-tolerance-in-tomato-plants
#11
Dandan Wei, Wen Zhang, Cuicui Wang, Qingwei Meng, Gang Li, Tony H H Chen, Xinghong Yang
Tomato (Solanum lycopersicum cv. 'Moneymaker') was transformed with the choline oxidase gene codA from Arthrobacter globiformis, which was modified to allow for targeting to both chloroplasts and the cytosol. Glycine betaine (GB) was accumulated in transformed plants, while no detectable GB was found in wild-type (WT) plants. Compared to WT plants, transgenic lines showed significantly higher photosynthetic rates (Pn) and antioxidant enzyme activities and lower reactive oxygen species (ROS) accumulation in the leaves when exposed to salt stress...
April 2017: Plant Science: An International Journal of Experimental Plant Biology
https://www.readbyqxmd.com/read/28224898/non-covalently-crosslinked-chitosan-nanofibrous-mats-prepared-by-electrospinning-as-substrates-for-soft-tissue-regeneration
#12
Chiara Tonda-Turo, Francesca Ruini, Martina Ramella, Francesca Boccafoschi, Piergiorgio Gentile, Emilia Gioffredi, Giuseppe Falvo D'Urso Labate, Gianluca Ciardelli
Chitosan (CS) membranes obtained by electrospinning are potentially ideal substrates for soft tissue engineering as they combine the excellent biological properties of CS with the extracellular matrix (ECM)-like structure of nanofibrous mats. However, the high amount of acid solvents required to spun CS solutions interferes with the biocompatibility of CS fibres. To overcome this limitation, novel CS based solutions were investigated in this work. Low amount of acidic acid (0.5M) was used and dibasic sodium phosphate (DSP) was introduced as ionic crosslinker to improve nanofibres water stability and to neutralize the acidic pH of electrospun membranes after fibres soaking in biological fluids...
April 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28224710/extended-low-dose-exposure-to-saxitoxin-inhibits-neurite-outgrowth-in-model-neuronal-cells
#13
Katie O'Neill, Ian F Musgrave, Andrew Humpage
The potent neurotoxin saxitoxin (STX) belongs to a group of structurally related analogues produced by both marine and freshwater phytoplankton. The toxins act by blocking voltage-gated sodium channels stopping the inflow of sodium ions and the generation of action potentials. Exposure from marine sources occurs as a result of consuming shellfish which have concentrated the toxins, and freshwater exposure can occur from drinking water although there have been no acute poisonings from the latter source to date...
November 7, 2016: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28224683/confined-amorphous-red-phosphorus-in-mof-derived-n-doped-microporous-carbon-as-a-superior-anode-for-sodium-ion-battery
#14
Weihan Li, Shuhe Hu, Xiangyu Luo, Zhongling Li, Xizhen Sun, Minsi Li, Fanfan Liu, Yan Yu
Red phosphorus (P) has attracted intense attention as promising anode material for high-energy density sodium-ion batteries (NIBs), owing to its high sodium storage theoretical capacity (2595 mAh g(-1) ). Nevertheless, natural insulating property and large volume variation of red P during cycling result in extremely low electrochemical activity, leading to poor electrochemical performance. Herein, the authors demonstrate a rational strategy to improve sodium storage performance of red P by confining nanosized amorphous red P into zeolitic imidazolate framework-8 (ZIF-8) -derived nitrogen-doped microporous carbon matrix (denoted as P@N-MPC)...
February 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28224472/effects-of-weight-reduction-after-sleeve-gastrectomy-on-metabolic-variables-in-saudi-obese-subjects-in-aseer-province-of-kingdom-of-saudi-arabia
#15
Mohammed A Bawahab, Abdullah S Assiri, Walid Abdel Maksoud, Ayyub Patel, Osama Kadoumi, Gaffar Sarwar Zaman, Riyad Mohammed Khalil Alessih, Syed Saleem Haider
OBJECTIVES: The objectives of this study were to investigate the occurrence of oxidative stress, status of protective antioxidants enzymes, inflammatory biomarkers, and some metabolic health variables in the blood and to compare the results between those of the normal controls and obese patients submitted to sleeve gastrectomy-induced weight loss over a 1-year follow-up period. MATERIALS AND METHODS: A prospective study was conducted in Aseer Central Hospital and Abha Private Hospital in the Kingdom of Saudi Arabia from January 2012 to January 2013 on 50 normal (BMI = 22-25 kg/m(2)) control subjects and 50 obese (BMI = 45-50 kg/m(2)) patients...
February 21, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28222732/refinement-of-intraperitoneal-injection-of-sodium-pentobarbital-for-euthanasia-in-laboratory-rats-rattus-norvegicus
#16
Katie K Zatroch, Cameron G Knight, Julie N Reimer, Daniel S J Pang
BACKGROUND: The Canadian Council on Animal Care and American Veterinary Medical Association classify intraperitoneal (IP) pentobarbital as an acceptable euthanasia method in rats. However, national guidelines do not exist for a recommended dose or volume and IP euthanasia has been described as unreliable, with misinjections leading to variable success in ensuring a timely death. The aims of this study were to assess and improve efficacy and consistency of IP euthanasia. In a randomized, blinded study, 51 adult female Sprague-Dawley rats (170-495 g) received one of four treatments: low-dose low-volume (LL) IP pentobarbital (n = 13, 200 mg/kg pentobarbital), low-dose high-volume (LH) IP pentobarbital (n = 14, 200 mg/kg diluted 1:3 with phosphate buffered saline), high-dose high-volume (HH, n = 14, 800 mg/kg pentobarbital), or saline...
February 21, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28222107/transcriptional-response-to-131i-exposure-of-rat-thyroid-gland
#17
Nils Rudqvist, Johan Spetz, Emil Schüler, Toshima Z Parris, Britta Langen, Khalil Helou, Eva Forssell-Aronsson
Humans are exposed to 131I in medical diagnostics and treatment but also from nuclear accidents, and better knowledge of the molecular response in thyroid is needed. The aim of the study was to examine the transcriptional response in thyroid tissue 24 h after 131I administration in rats. The exposure levels were chosen to simulate both the clinical situation and the case of nuclear fallout. Thirty-six male rats were i.v. injected with 0-4700 kBq 131I, and killed at 24 h after injection (Dthyroid = 0.0058-3...
2017: PloS One
https://www.readbyqxmd.com/read/28222034/three-cases-of-gordon-syndrome-with-dominant-klhl3-mutations
#18
Ji Soo Park, Eujin Park, Hye Sun Hyun, Yo Han Ahn, Hee Gyung Kang, Il-Soo Ha, Hae Il Cheong
BACKGROUND: Gordon syndrome (GS) is a rare form of monogenic hypertension characterized by low renin hypertension, hyperkalemia, hyperchloremic metabolic acidosis, and normal glomerular filtration rate. To date, four genes causing GS have been identified as: WNK1, WNK4, CUL3, and KLHL3. CASE REPORT: We report three cases of GS in two families. All patients presented with typical clinical features of GS and had a known dominant KLHL3 mutation. Oral thiazide treatment with low salt diet resulted in normalization of blood pressure and serum electrolytes in all three cases...
February 21, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28221986/induction-of-viable-but-nonculturable-salmonella-in-exponentially-grown-cells-by-exposure-to-a-low-humidity-environment-and-their-resuscitation-by-catalase
#19
Yuta Morishige, Atsushi Koike, Ai Tamura-Ueyama, Fumio Amano
Salmonella is a major cause of foodborne disease that sometimes occurs in massive outbreaks around the world. This pathogen is tolerant of low-humidity conditions. We previously described a method for induction of viable but nonculturable (VBNC) Salmonella enterica serovar Enteritidis by treatment with hydrogen peroxide (H2O2) and subsequent resuscitation with 0.3 mM sodium pyruvate. Here, we report a new method for the induction of the VBNC state in Salmonella Enteritidis cells, one involving dehydration. Exposure of Salmonella Enteritidis cells to dehydration stress under poor nutritional conditions (0...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28219689/in-vitro-drug-release-profiles-of-ph-sensitive-hydroxyethylacryl-chitosan-sodium-alginate-hydrogels-using-paracetamol-as-a-soluble-model-drug
#20
Pitchaya Treenate, Pathavuth Monvisade
The aim of this study is to investigate in vitro drug release profiles of pH-sensitive hydrogels composed of hydroxyethylacryl chitosan (HC) and sodium alginate (SA). The hydrogels were crosslinked by dipping method using different ionic crosslinkers (e.g., Ca(2+), Zn(2+) and Cu(2+)). The crosslinking reaction was confirmed by FT-IR. Swelling behavior and stability of the hydrogels in simulated digestive media were investigated. The result indicated that the combination between HC and SA could delay the degradation time of the hydrogels...
February 17, 2017: International Journal of Biological Macromolecules
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