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https://www.readbyqxmd.com/read/27919019/induction-of-calcitonin-gene-related-peptide-expression-in-rats-by-cortical-spreading-depression
#1
Yan Wang, Anne E Tye, Junli Zhao, Dongqing Ma, Ann C Raddant, Fan Bu, Benjamin L Spector, Nolan K Winslow, Minyan Wang, Andrew F Russo
OBJECTIVE: The neuropeptide calcitonin gene-related peptide (CGRP) has now been established as a key player in migraine. However, the mechanisms underlying the reported elevation of CGRP in the serum and cerebrospinal fluid of some migraineurs are not known. A candidate mechanism is cortical spreading depression (CSD), which is associated with migraine with aura and traumatic brain injury. The aim of this study was to investigate whether CGRP gene expression may be induced by experimental CSD in the rat cerebral cortex...
November 9, 2016: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/27916128/a-paper-based-platform-with-a-pencil-drawn-dual-amperometric-detector-for-the-rapid-quantification-of-ortho-diphenols-in-extravirgin-olive-oil
#2
Nicolò Dossi, Rosanna Toniolo, Flavia Impellizzieri, Franco Tubaro, Gino Bontempelli, Fabio Terzi, Evandro Piccin
A simple, sensitive and fast responding device is described for the discrimination of hydrophilic ortho-diphenols, whose presence in abundant enough amounts is typical for extra virgin olive oils (EVOOs), from hydrophilic mono-phenols instead present in almost all vegetable oils. It consists of a dual electrode detector pencil-drawn at the end of a paper microfluidic channel, defined by hydrophobic barriers, where samples of these antioxidants, extracted from vegetable oils by a 80:20% v/v acetonitrile/water mixture, were applied...
January 15, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/27913935/regulation-of-contractile-responses-of-vascular-smooth-muscle-cells-under-conditions-of-hypoxia-reoxygenation
#3
S V Gusakova, Yu G Birulina, L V Smagliy, I V Kovalev, I V Petrova, A V Nosarev, S N Orlov
We analyzed the effects of hypoxia and reoxygenation on changes in contractile activity in rat aortic smooth muscles. Both hypoxia and reoxygenation induced relaxation of smooth muscle cells precontracted with high-potassium Krebs solution (30 mM KCl) or α1-adrenoceptor agonist phenylephrine. Vasodilation resulted from enhancement of potassium permeability of smooth muscle cell membranes caused by activation of voltage-gated potassium channels (triggered by both precontracting agents) or by opening of ATP-sensitive potassium channels (phenylephrine)...
December 2, 2016: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27912763/global-health-partnership-for-student-peer-to-peer-psychiatry-e-learning-lessons-learned
#4
REVIEW
Roxanne C Keynejad
BACKGROUND: Global 'twinning' relationships between healthcare organizations and institutions in low and high-resource settings have created growing opportunities for e-health partnerships which capitalize upon expanding information technology resources worldwide. E-learning approaches to medical education are increasingly popular but remain under-investigated, whilst a new emphasis on global health teaching has coincided with university budget cuts in many high income countries. RESULTS: King's Somaliland Partnership (KSP) is a paired institutional partnership health link, supported by Tropical Health and Education Trust (THET), which works to strengthen the healthcare system and improve access to care through mutual exchange of skills, knowledge and experience between Somaliland and King's Health Partners, UK...
December 3, 2016: Globalization and Health
https://www.readbyqxmd.com/read/27903643/effects-of-antihypertensive-agents-on-intestinal-contractility-in-the-spontaneously-hypertensive-rat-angiotensin-receptor-system-down-regulation-by-losartan
#5
Glen S Patten, Mahinda Y Abeywardena
Hypertension is an inflammatory condition controlled by the renin angiotensin system and is linked to kidney disease, diabetes mellitus and recently to dysfunction of the gut. The aim of this study was to determine what effect anti-hypertensive drug treatments may have on intestinal function of the spontaneously hypertensive rat (SHR). In the first experiment SHR were treated with enalapril or hydralazine. In the second experiment SHR were treated with losartan with no-treatment as control for both experiments...
November 30, 2016: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/27899264/cyclic-ferrocenylnaphthalene-diimide-derivative-as-a-new-class-of-g-quadruplex-dna-binding-ligand
#6
Md Monirul Islam, Shinobu Sato, Shingo Shinozaki, Shigeori Takenaka
To identify an effective ligand that binds to a G-quadruplex structure but not a double-stranded DNA (dsDNA), a set of biophysical and biochemical experiments were carried out using newly synthesized cyclic ferrocenylnaphthalene diimide (cFNDI, 1) or the non-cyclic derivative (2) with various structures of G-quadruplex DNAs and dsDNA. Compound 1 bound strongly to G-quadruplexes DNAs (10(6)M(-1) order) with diminished binding to dsDNA (10(4)M(-1) order) in 100mM AcOH-AcOK buffer (pH 5.5) containing 100mM KCl...
November 15, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27894281/successful-selective-reduction-of-a-heterotopic-cesarean-scar-pregnancy-in-the-second-trimester-a-case-report-and-review-of-the-literature
#7
Haiyan Yu, Hong Luo, Fumin Zhao, Xinghui Liu, Xiaodong Wang
BACKGROUND: Heterotopic cesarean scar pregnancy is a cesarean scar pregnancy combined with an intrauterine pregnancy that predisposes a woman to life-threatening complications such as uterine rupture and massive bleeding. Preservation of the intrauterine pregnancy in heterotopic cesarean scar pregnancy is a great challenge. CASE PRESENTATION: We report a case of a 33-year-old woman with heterotopic cesarean scar pregnancy after IVF-embryo transfer (ET). Expectant management was carried out with early diagnosis of heterotopic cesarean scar pregnancy (HCSP), and selective fetal reduction of cesarean scar pregnancy (CSP) was performed by ultrasound-guided intrathoracic injection of potassium chloride (KCl) at 16 + 4 weeks of gestation due to aggravation of CSP...
November 29, 2016: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/27893990/ferrocenyl-naphthalene-diimides-as-tetraplex-dna-binders
#8
Shinobu Sato, Shigeori Takenaka
Seven ferrocenyl naphthalene diimide (FND) ligands were synthesized. Each had a higher affinity for tetraplex DNA than for either single- or double-stranded DNA. The FND binding affinities were >10(5)M(-1) in 0.10M AcOH-AcONa or AcOH-AcOK (pH5.5) containing 0.10M NaCl or KCl. The FNDs with the highest binding affinities for tetraplex DNA showed 23- or 8-times higher preference for tetraplex DNA than for single- or double-stranded DNA, respectively. The current signals generated from the seven FNDs bound to the tetraplex DNA immobilized on the electrode were found to correlate with the binding affinities of these ligands for the tetraplex DNA...
November 17, 2016: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/27891040/inadvertent-injection-of-potassium-chloride-instead-of-sodium-chloride-during-treatment-of-chronic-low-back-ache-with-epidural-injection-leading-to-paraplegia
#9
Rahul Ranjan, Naiyer Asif, Sohail Ahmad, Syed Ifthekar
Epidural injection of steroid is given for back pain resistant to other conservative management. Normal saline (NS) is used as diluent in 80 mg methylprednisolone and a local anesthetic. Due to a similar looking ampoule of NS and potassium chloride (KCl), there is a probability of accidental use of KCl instead of NS. We present a case of a 50-year-old male patient having low back ache refractory to other conservative treatments. Epidural injection of steroid was given, but accidently KCl was mixed with methylprednisolone instead of NS...
October 2016: Journal of Craniovertebral Junction and Spine
https://www.readbyqxmd.com/read/27889151/efficacy-of-post-harvest-rinsing-and-bleach-disinfection-of-e-%C3%A2-coli-o157-h7-on-spinach-leaf-surfaces
#10
Nichola M Kinsinger, Holly M Mayton, Madeline R Luth, Sharon L Walker
Attachment and detachment kinetics of Escherichia coli O157:H7 from baby spinach leaf epicuticle layers were investigated using a parallel plate flow chamber. Mass transfer rate coefficients were used to determine the impact of water chemistry and common bleach disinfection rinses on the removal and inactivation of the pathogen. Attachment mass transfer rate coefficients generally increased with ionic strength. Detachment mass transfer rate coefficients were nearly the same in KCl and AGW rinses; however, the detachment phase lasted longer in KCl than AGW (18 ± 4 min and 4 ± 2 min, respectively), indicating that the ions present during attachment play a significant role in the cells' ability to remain attached...
April 2017: Food Microbiology
https://www.readbyqxmd.com/read/27886425/template-directed-directionally-solidified-three-dimensionally-mesostructured-agcl-kcl-eutectic-photonic-crystals
#11
Jinwoo Kim, Larry K Aagesen, Jun Hee Choi, Jaewon Choi, Ha Seong Kim, Jinyun Liu, Chae-Ryong Cho, Jin Gu Kang, Ali Ramazani, Katsuyo Thornton, Paul V Braun
No abstract text is available yet for this article.
November 2016: Advanced Materials
https://www.readbyqxmd.com/read/27883125/surface-induced-vibrational-modes-in-the-fluorescence-spectra-of-ptcda-adsorbed-on-the-kcl-100-and-nacl-100-surfaces
#12
A Paulheim, C Marquardt, M Sokolowski, M Hochheim, T Bredow, H Aldahhak, E Rauls, W G Schmidt
We report a combined experiment-theory study on low energy vibrational modes in fluorescence spectra of perylene-3,4,9,10-tetracarboxylic acid dianhydride (PTCDA) molecules. Using very low coverages, isolated molecules were adsorbed on terrace sites or at sites located at residual steps on (100) oriented alkali halide films (KCl and NaCl). The low energy modes couple to the optical transition only because the PTCDA molecule is geometrically distorted (C2v) upon adsorption on the surface; they would be absent for the parent planar (D2h) PTCDA molecule...
November 24, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27882482/immobilization-and-stabilization-of-beta-xylosidases-from-penicillium-janczewskii
#13
César Rafael Fanchini Terrasan, Maria Romero-Fernández, Alejandro H Orrego, Sandro Martins Oliveira, Benevides Costa Pessela, Eleonora Cano Carmona, José Manuel Guisan
β-Xylosidases are critical for complete degradation of xylan, the second main constituent of plant cell walls. A minor β-xylosidase (BXYL II) from Penicillium janczewskii was purified by ammonium sulfate precipitation (30% saturation) followed by DEAE-Sephadex chromatography in pH 6.5 and elution with KCl. The enzyme presented molecular weight (MW) of 301 kDa estimated by size exclusion chromatography. Optimal activity was observed in pH 3.0 and 70-75 °C, with higher stability in pH 3.0-4.5 and half-lives of 11, 5, and 2 min at 65, 70, and 75 °C, respectively...
November 23, 2016: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/27879055/combining-field-amplified-sample-stacking-with-moving-reaction-boundary-electrophoresis-on-a-paper-chip-for-the-preconcentration-and-separation-of-metal-ions
#14
Liangfei Ouyang, Qian Liu, Heng Liang
A common drawback of paper-based separation devices is their poor detection limit. In this study, we combined field-amplified sample stacking with moving reaction boundary electrophoresis on a paper chip with six array channels for the parallel separation and concentration of multiple samples. With a new hyphenated technique, the brown I2 from the Fe(3+) -I(-) oxidation-reduction reaction emerged near the boundary between the dilute ethylene diamine tetraacetic acid and potassium iodide and highly concentrated KCl solutions...
November 23, 2016: Journal of Separation Science
https://www.readbyqxmd.com/read/27867157/effects-of-salt-loading-on-plasma-osteoprotegerin-levels-and-protective-role-of-potassium-supplement-in-normotensive-subjects
#15
Fu-Qiang Liu, Sheng-Qiang Liu, Yong Zhang, Yang Wang, Chao Chu, Dan Wang, Shuo Pan, Jun-Kui Wang, Qi Yu, Jian-Jun Mu
BACKGROUND: Excess dietary salt is strongly correlated with cardiovascular disease, morbidity, and mortality. Conversely, potassium likely elicits favorable effects on cardiovascular disorders. In epidemiological studies, increased plasma osteoprotegerin (OPG) concentrations are associated with atherosclerosis and vascular deaths. Our study was designed to examine the effects of salt intake and potassium supplementation on plasma OPG levels in normotensive subjects.Methods and Results:The 18 normotensive subjects were selected from a rural community in China...
November 19, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/27866744/role-of-solution-chemistry-in-the-retention-and-release-of-graphene-oxide-nanomaterials-in-uncoated-and-iron-oxide-coated-sand
#16
Dengjun Wang, Chongyang Shen, Yan Jin, Chunming Su, Lingyang Chu, Dongmei Zhou
Understanding the fate and transport including remobilization of graphene oxide nanomaterials (GONMs) in the subsurface would enable us to expedite their benign use and evaluate their environmental impacts and health risks. In this study, the retention and release of GONMs were investigated in water-saturated columns packed with uncoated sand (Un-S) or iron oxide-coated sand (FeS) at environmentally relevant solution chemistries (1-100mM KCl and 0.1-10mM CaCl2 at pH7 and 11). Our results showed that increasing ionic strength (IS) inhibited GONMs' transport, and the impact of K(+) was less than Ca(2+)...
November 17, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27865952/a-superporous-and-superabsorbent-glucuronoxylan-hydrogel-from-quince-cydonia-oblanga-stimuli-responsive-swelling-on-off-switching-and-drug-release
#17
Muhammad Umer Ashraf, Muhammad Ajaz Hussain, Gulzar Muhammad, Muhammad Tahir Haseeb, Sajid Bashir, Syed Zajif Hussain, Irshad Hussain
Current study was designed to investigate micromeritic properties, water absorption capacity, stimuli (pH, ethanol and saline) responsive swelling-deswelling (on-off switching) and controlled drug release from the polysaccharide glucuronoxylan isolated from the seeds of Quince. The water retention capacity of Quince hydrogel (QH) was found admirable. The hydrogel also exhibited privileged swelling in water and basic buffers (pH 6.8 and 7.4) while insignificant swelling in acidic buffer (pH 1.2). The swelling kinetics of QH follows second order...
November 16, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27865779/impairment-of-neurovascular-coupling-in-type-1-diabetes-mellitus-in-rats-is-prevented-by-pancreatic-islet-transplantation-and-reversed-by-a-semi-selective-pkc-inhibitor
#18
Francesco Vetri, Meirigeng Qi, Haoliang Xu, Jose Oberholzer, Chanannait Paisansathan
Streptozotocin (STZ)-induced chronic hyperglycemia has a detrimental effect on neurovascular coupling, linked to increased PKC-mediated phosphorylation and PKC isoform expression changes. Here, we sought to determine whether: 1) selective PKC-α/β/γ inhibitor, GF109203X, could reverse the effects of chronic hyperglycemia on cerebrovascular reactivity; 2) pancreatic islet transplantation could prevent the development of cerebrovascular impairment seen in a rat model of Type 1 Diabetes. We studied the effect of GF109203X in diabetic (DM), non-diabetic (ND), and transplanted (TR) Lewis rats during either sciatic nerve stimulation (SNS) or the topical applications of the large-conductance Ca(2+)-operated K(+) (BKCa) channel opener, NS1619, or the K(+) inward rectifier (Kir) channel agonist, KCl...
November 16, 2016: Brain Research
https://www.readbyqxmd.com/read/27865648/-related-factors-with-extravasation-of-non-cytostatic-agents-in-peripheral-vein-catheters
#19
Cristina Fernández-García, Esther Mata-Peón, Sara Avanzas-Fernández
OBJECTIVE: To know the independent variables related to the occurrence of extravasation in patients with peripheral vein catheters (PVC). MATERIAL AND METHOD: Retrospective study carried out in 6 longitudinal cuts between July 2013 an January 2014. A total of 1,442 PVC were reviewed, of which 730 met the inclusion criteria, and were divided into 2 groups: extravasation and not extravasation, with 365 cases each. The variables of age, gender, admission unit, catheter gauge, insertion site, previous insertion into the same limb, hospital unit where the insertion took place, communication difficulties, personal health history and analyzed parenterally drug administered were considered...
November 16, 2016: Enfermería Clínica
https://www.readbyqxmd.com/read/27865351/quercetin-relaxes-guinea-pig-gallbladder-strips
#20
Loren Kline, Edward Karpinski
Quercetin, a phytoestrogen and flavonoid, relaxes intestinal and vascular smooth muscle. The purpose of this study was to determine if quercetin had an effect on gallbladder smooth muscle. An in vitro technique was used to determine the effects of quercetin on gallbladder strips and which system(s) mediated the relaxation. Paired t tests were used; differences between means of P < .05 were considered significant. Adding quercetin before cholecystokinin or KCl produced a significant (P < .001) decrease in the amount of tension (0...
October 2016: Nutrition Research
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