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https://www.readbyqxmd.com/read/29908488/effect-of-dissolution-of-magnesium-alloy-az31-on-the-rheological-properties-of-phosphate-buffer-saline
#1
Usman Riaz, Leela Rakesh, Ishraq Shabib, Waseem Haider
The issue of long-term incompatible interactions associated with the permanent implants can be eliminated by using various biodegradable metal implants. The recent research is focusing on the use of degradable stents to restore most of the hindrances of capillaries, and coronary arteries by supplying instant blood flow with constant mechanical and structural support. However, internal endothelialization and infection due to the corrosion of implanted stents are not easy to diagnose in the long run. In the recent past, magnesium (Mg) has been widely investigated for the cardiovascular stent applications...
June 5, 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29908421/ultrastructural-variability-of-mitochondrial-cristae-induced-in-vitro-by-bee-apis-mellifera-venom-and-its-derivatives-melittin-and-phospholipase-a2-in-isolated-rat-adrenocortical-mitochondria
#2
Adrian Florea, Andrei Patrick Varga, Horea Vladi Matei
We tested the ability of bee venom (BV), melittin (Mlt), and phospholipase A2 (PLA) - used in 5 concentrations each (5, 10, 15, 20 and 40 μg/100 μl) - to promote ultrastructural changes and reorganization of cristae in vitro in mitochondria isolated from rat adrenal cortex after a protocol optimized by us. Thus, apart from two control grups (CI and CS), in which the mitochondria were suspended into saline buffer and isolation medium respectively, 15 more groups of mitochondria were constituted, corresponding to the five different doses of the three substance tested (BV5 to M40; M5 to M40 and P5 to P40)...
June 9, 2018: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/29908234/agmatine-attenuates-methamphetamine-induced-passive-avoidance-learning-and-memory-and-camkii-%C3%AE-gene-expression-deteriorations-in-hippocampus-of-rat
#3
Maryam Noorbakhshnia, Arsham Rashidkaboli, Mahnaz Pakatchian, Siamak Beheshti
Methamphetamine (METH) abuse is one the most worldwide problems with wide-ranging effects on the central nervous system (CNS). Chronic METH abuse can associate with cognitive abnormalities and neurodegenerative changes in the brain. Agmatine, a cationic polyamine, has been proposed as a neuromodulator that modulates many effects of abused drugs. The aim of this study was to determine if agmatine can decrease the impairment effect of METH on memory and hippocampal CaMKII-α gene expression, a gene that plays a major role in memory...
June 13, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29908041/automated-quantification-of-microvascular-perfusion
#4
P Mason McClatchey, Nicholas A Mignemi, Zhengang Xu, Ian M Williams, Jane E B Reusch, Owen P McGuinness, David H Wasserman
OBJECTIVE: Changes in microvascular perfusion have been reported in many diseases, yet the functional significance of altered perfusion is often difficult to determine. This is partly because commonly used techniques for perfusion measurement often rely on either indirect or by-hand approaches. METHODS: We developed and validated a fully automated software technique to measure microvascular perfusion in videos acquired by fluorescence microscopy in the mouse gastrocnemius...
June 16, 2018: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/29907954/inter-relationships-between-the-heterotrimeric-g%C3%AE-subunit-agb1-the-rlk-feronia-and-ralf1-in-salinity-response
#5
Yunqing Yu, Sarah M Assmann
Plant heterotrimeric G proteins modulate numerous developmental stress responses. Recently, receptor-like kinases (RLKs) have been implicated as functioning with G proteins, and may serve as plant G-protein-coupled-receptors (GPCRs). The RLK FERONIA (FER), in the Catharantus roseus RLK1-like subfamily, is activated by a family of polypeptides called Rapid Alkalinization Factors (RALFs). We previously showed that the Arabidopsis G protein β subunit, AGB1, physically interacts with FER, and that RALF1 regulation of stomatal movement through FER requires AGB1...
June 15, 2018: Plant, Cell & Environment
https://www.readbyqxmd.com/read/29907825/ex-vivo-biomechanical-characterization-of-syringe-needle-ejections-for-intracerebral-cell-delivery
#6
Brendon Wahlberg, Harmanvir Ghuman, Jessie R Liu, Michel Modo
Intracerebral implantation of cell suspensions is finding its clinical translation with encouraging results in patients with stroke. However, the survival of cells in the brain remains poor. Although the biological potential of neural stem cells (NSCs) is widely documented, the biomechanical effects of delivering cells through a syringe-needle remain poorly understood. We here detailed the biomechanical forces (pressure, shear stress) that cells are exposed to during ejection through different sized needles (20G, 26G, 32G) and syringes (10, 50, 250 µL) at relevant flow rates (1, 5, 10 µL/min)...
June 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29907361/mesenchymal-stem-cell-expression-of-interleukin-35-protects-against-ulcerative-colitis-by-suppressing-mucosal-immune-responses
#7
Yongjia Yan, Na Zhao, Xianghui He, Hao Guo, Zhixiang Zhang, Tong Liu
BACKGROUND: Interleukin-35 (IL-35) has recently been identified as an immunosuppressive cytokine that has been used as a potential therapy for chronic inflammatory and autoimmune diseases. However, there remains a paucity of data regarding its potential benefits after integration into mesenchymal stem cells (MSCs). METHODS: We used a dextran sulfate sodium (DSS)-induced colitis mice model and treated them with IL-35-MSCs, MSCs or saline. The body weight was recorded daily and inflammatory processes were determined...
June 12, 2018: Cytotherapy
https://www.readbyqxmd.com/read/29907235/rapid-valproic-acid-induced-modulation-of-the-traumatic-proteome-in-a-porcine-model-of-traumatic-brain-injury-and-hemorrhagic-shock
#8
Michael Weykamp, Vahagn C Nikolian, Isabel S Dennahy, Gerald A Higgins, Patrick E Georgoff, Henriette Remmer, Mohamed H Ghandour, Hasan B Alam
BACKGROUND: Histone deacetylase inhibitors such as valproic acid (VPA) improve survival in lethal models of hemorrhagic shock and polytrauma. Although VPA is known to modulate transcription, its ability to reduce mortality within minutes of administration suggests involvement of a rapid, posttranslational mechanism. We hypothesized that VPA treatment would cause proteomic changes within minutes of treatment including quantitative and/or posttranslational differences in structural and/or effector proteins...
August 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29907135/doxorubicin-induced-cardiotoxicity-is-suppressed-by-estrous-staged-treatment-and-exogenous-17%C3%AE-estradiol-in-female-tumor-bearing-spontaneously-hypertensive-rats
#9
Kaytee L Pokrzywinski, Thomas G Biel, Elliot T Rosen, Julia L Bonanno, Baikuntha Aryal, Francesca Mascia, Delaram Moshkelani, Steven Mog, V Ashutosh Rao
BACKGROUND: Doxorubicin (DOX), an anthracycline therapeutic, is widely used to treat a variety of cancer types and known to induce cardiomyopathy in a time and dose-dependent manner. Postmenopausal and hypertensive females are two high-risk groups for developing adverse effects following DOX treatment. This may suggest that endogenous reproductive hormones can in part suppress DOX-induced cardiotoxicity. Here, we investigated if the endogenous fluctuations in 17β-estradiol (E2) and progesterone (P4) can in part suppress DOX-induced cardiomyopathy in SST-2 tumor-bearing spontaneously hypersensitive rats (SHRs) and evaluate if exogenous administration of E2 and P4 can suppress DOX-induced cardiotoxicity in tumor-bearing ovariectomized SHRs (ovaSHRs)...
June 15, 2018: Biology of Sex Differences
https://www.readbyqxmd.com/read/29907111/changes-in-biomarkers-in-equine-synovial-fluid-two-weeks-after-intra-articular-hyaluronan-treatment-a-randomised-double-blind-clinical-trial
#10
Tytti M Niemelä, Riitta-Mari Tulamo, Kaisa Aaltonen, Satu M Sankari, Anna K Hielm-Björkman
BACKGROUND: Inflammatory and degenerative activity inside the joint can be studied in vivo via analysis of synovial fluid (SF) biomarkers, which are molecular markers of inflammatory processes and tissue turnover. The aim of this study was to investigate the response of selected biomarkers in the SF after an intra-articular (IA) high-molecular-weight non-animal stabilized hyaluronic acid (NASHA) treatment. Our hypothesis was that prostaglandin E2 (PGE2 ), substance P, aggrecan chondroitin sulfate 846 epitope (CS846), and carboxypeptide of type II collagen (CPII) concentrations in SF would decrease more in the NASHA than in the placebo group...
June 15, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29907082/paravertebral-dexmedetomidine-as-an-adjuvant-to-ropivacaine-protects-against-independent-lung-injury-during-one-lung-ventilation-a-preliminary-randomized-clinical-trial
#11
Wei Zhang, Shanfeng Zhang, Bing Li, Mingyang Sun, Jiaqiang Zhang
BACKGROUND: To investigate the effect of paravertebral dexmedetomidine as an adjuvant to ropivacaine on independent lung injury during one-lung ventilation. METHODS: In total, 120 patients who underwent elective radical resection of pulmonary carcinoma were randomly assigned to one of six groups (n = 20): normal saline (C group), ropivacaine (R group), intravenous dexmedetomidine (Div group), 0.5 μg/kg paravertebral dexmedetomidine as an adjuvant to ropivacaine (RD0...
June 15, 2018: BMC Anesthesiology
https://www.readbyqxmd.com/read/29907077/oral-chlorhexidine-against-ventilator-associated-pneumonia-and-microbial-colonization-in-intensive-care-patients
#12
Elem Kocaçal Güler, Gülengün Türk
The aim of this systematic review was to determine the effect of chlorhexidine at different concentration and frequency on ventilator-associated pneumonia and microbial colonization in mechanically ventilated patients. Relevant studies in English language were identified by searching data bases between January 2010 and December 2017. Ten studies met the inclusion criteria. Chlorhexidine with 0.2% concentration was found to be more effective than the control group (placebo dental gel and normal saline) in preventing the development of ventilator-associated pneumonia in three of the eight studies...
June 1, 2018: Western Journal of Nursing Research
https://www.readbyqxmd.com/read/29907044/concentrated-aqueous-sodium-chloride-solution-in-clays-at-thermodynamic-conditions-of-hydraulic-fracturing-insight-from-molecular-dynamics-simulations
#13
Martin Svoboda, Martin Lísal
To address a high salinity of flow-back water during hydraulic fracturing, we use molecular dynamics (MD) simulations and study the thermodynamics, structure, and diffusion of concentrated aqueous salt solution in clay nanopores. The concentrated solution results from the dissolution of a cubic NaCl nanocrystal, immersed in an aqueous NaCl solution of varying salt concentration and confined in clay pores of a width comparable to the crystal size. The size of the nanocrystal equals to about 18 Å which is above a critical nucleus size...
June 14, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29906777/synergetic-effects-of-5-aminolevulinic-acid-and-ascophyllum-nodosum-seaweed-extracts-on-asparagus-phenolics-and-stress-related-genes-under-saline-irrigation
#14
Abdullah A Al-Ghamdi, Hosam O Elansary
Salinity is one of the major agricultural problems that may threat food security and limit the agricultural lands expansion worldwide. Exploring novel tools controlling saline conditions and increase valuable secondary metabolites in the horticultural crops might have outstanding results that serve humanity in the current century. The current study explores the effects of weekly seaweed extracts (7 mL  L-1 ) and/or 5-aminolevulinic acid (3, 5 and 10 ppm) sprays on Asparagus aethiopicus plants subjected to saline stress conditions (2000 and 4000 ppm) for 6 weeks in two consecutive seasons of 2016 and 2017...
June 9, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29906575/sodium-fluorescein-video-angiography-fl-vag-as-an-adjunct-to-resection-of-cerebral-arteriovenous-malformations
#15
Serrano-Rubio Alejandro, Ruiz-Treviño Armando S, Orenday-Barraza Jose M, Vázquez-Gregorio Rafael, Lee Angel, Nathal Edgar
OBJECT: The use of intraoperative fluorescence has proven to be a useful tool in multiple neurosurgical procedures with a potential utility in treating arteriovenous malformations (AVMs). The aim of this study was to characterize dynamic changes of an AVM using a microscope-integrated technique at the moment of performing an intraoperative Sodium fluorescein videoangiography (FL-VAG) at each of the resection phases. METHODS: Our study at the National Institute of Neurology and Neurosurgery-Mexico City, prospectively recruited twelve patients harboring an AVM, using FL-VAG as an ancillary technique for the resection of the lesion...
June 12, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29906556/antinociceptive-effect-of-inhalation-of-the-essential-oil-of-bergamot-in-mice
#16
Damiana Scuteri, Michele Crudo, Laura Rombolà, Chizuko Watanabe, Hirokazu Mizoguchi, Shinobu Sakurada, Tsukasa Sakurada, Rosaria Greco, Maria Tiziana Corasaniti, Luigi Antonio Morrone, Giacinto Bagetta
Bergamot essential oil (BEO) has proven wide evidence of pharmacological antinociceptive effectiveness both in nociceptive and in neuropathic pain models. The antinociceptive properties of BEO for inhalation have not been investigated. The purpose of this study is to evaluate the effects of the inhalation of BEO on formalin-induced nociceptive response in mice. Male ddY-strain mice (Japan SLC, Hamamatsu, Japan) of 23-25 g of weight at the time the experiments underwent the formalin test. Twenty μL of formalin (2% in saline) were administered into the plantar surface of the mice hindpaw and the time of licking/biting was observed and recorded at intervals of 5 min...
June 12, 2018: Fitoterapia
https://www.readbyqxmd.com/read/29905905/selective-modification-of-fluciclovine-18-f-transport-in-prostate-carcinoma-xenografts
#17
F I Tade, W G Wiles, G Lu, B Bilir, O Akin-Akintayo, J S Lee, D Patil, W Yu, C Ormenisan Gherasim, B Fei, C S Moreno, A O Osunkoya, E J Teoh, S Oka, H Okudaira, M M Goodman, D M Schuster
We investigated if previously demonstrated inhibition of fluciclovine (18 F) in vitro could be replicated in a PC3-Luc xenograft mouse model. Following intratumoral injection of 2-aminobicyclo-(2,2,1)-heptane-2-carboxylic acid (BCH), alpha-(methylamino)isobutyric acid (MeAIB) or saline, fluciclovine PET tumor-to-background activity was 43.6 (± 5.4)% and 25.3 (± 5.2)% lower in BCH (n = 6) and MeAIB (n = 5) injected PC3 Luc xenografts, respectively, compared to saline-injected controls (n = 2)...
June 15, 2018: Amino Acids
https://www.readbyqxmd.com/read/29905883/hypertonic-saline-or-mannitol-for-treating-elevated-intracranial-pressure-in-traumatic-brain-injury-a-meta-analysis-of-randomized-controlled-trials
#18
Jiajie Gu, Haoping Huang, Yuejun Huang, Haitao Sun, Hongwu Xu
Hyperosmolar therapy is regarded as the mainstay for treatment of elevated intracranial pressure (ICP) in traumatic brain injury (TBI). This still has been disputed as application of hypertonic saline (HS) or mannitol for treating patients with severe TBI. Thus, this meta-analysis was performed to further compare the advantages and disadvantages of mannitol with HS for treating elevated ICP after TBI. We conducted a systematic search on PubMed, EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL), Wan Fang Data, VIP Data, SinoMed, and China National Knowledge Infrastructure (CNKI) databases...
June 15, 2018: Neurosurgical Review
https://www.readbyqxmd.com/read/29905798/nicotine-induced-conditional-place-preference-is-affected-by-head-injury-correlation-with-dopamine-release-in-the-nucleus-accumbens-shell
#19
Chen Yuan-Hao, Tung-Tai Kuo, Eagle Yi-Kung Huang, Barry J Hoffer, Jen-Hsin Kao, Yu-Ching Chou, Yung-Hsiao Chiang, Jonathan Miller
Background: Traumatic brain injury (TBI) is known to impact dopamine-mediated reward pathways, but the underlying mechanisms have not been fully established. Methods: Nicotine-induced conditional place preference (CPP) was used to study rats exposed to a 6-psi fluid percussion injury (FPI) with and without prior exposure to nicotine. Preference was quantified as a score defined as (C1-C2) / (C1+C2), where C1 is time in the nicotine-paired compartment and C2 is time in the saline-paired compartment...
June 14, 2018: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29905791/microbial-ecology-of-deep-sea-hypersaline-anoxic-basins
#20
Giuseppe Merlino, Alan Barozzi, Grégoire Michoud, David Kamanda Ngugi, Daniele Daffonchio
Deep hypersaline anoxic basins (DHABs) are unique water bodies occurring within fractures at the bottom of the sea, where the dissolution of anciently buried evaporites created dense anoxic brines that are separated by a chemocline/pycnocline from the overlying oxygenated deep-seawater column. DHABs have been described in the Gulf of Mexico, the Mediterranean Sea, the Black Sea and the Red Sea. They are characterized by prolonged historical separation of the brines from the upper water column due to lack of mixing and by extreme conditions of salinity, anoxia, and relatively high hydrostatic pressure and temperatures...
July 1, 2018: FEMS Microbiology Ecology
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