keyword
MENU ▼
Read by QxMD icon Read
search

replacement

keyword
https://www.readbyqxmd.com/read/28446003/effects-of-canine-and-murine-mesenchymal-stromal-cell-transplantation-on-peripheral-nerve-regeneration
#1
Diego Noe Rodriguez Sanchez, Matheus Bertanha, Thiago Dias Fernandes, Luiz Antônio de Lima Resende, Elenice Deffune, Rogério Martins Amorim
Background and Objectives: Maintaining a permissive microenvironment is essential for adequate nerve regeneration. Cell-based therapy has the potential based cell replacement and promotion of axonal growth. The adipose tissue derived mesenchymal stromal cells (Ad-MSC) attract interest because neuroregenerative and anti-inflammatory properties. The aim of this study was to evaluate the effects of canine and murine Ad-MSC transplantation on the sciatic nerve regeneration. Methods: Forty Wistar rats were divided randomly into: control group - CG (n=8); denervated group - DG (n=8); decellularized vein group - VG (n=8); decellularized vein+canine MSC-cMSC (n=8); descellularized vein+murine MSC-mMSC (n=8)...
April 30, 2017: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28445803/jetvalve-rapid-manufacturing-of-biohybrid-scaffolds-for-biomimetic-heart-valve-replacement
#2
Andrew K Capulli, Maximillian Y Emmert, Francesco S Pasqualini, Debora Kehl, Etem Caliskan, Johan U Lind, Sean P Sheehy, Sung Jin Park, Seungkuk Ahn, Benedikt Weber, Josue A Goss, Simon P Hoerstrup, Kevin Kit Parker
Tissue engineered scaffolds have emerged as a promising solution for heart valve replacement because of their potential for regeneration. However, traditional heart valve tissue engineering has relied on resource-intensive, cell-based manufacturing, which increases cost and hinders clinical translation. To overcome these limitations, in situ tissue engineering approaches aim to develop scaffold materials and manufacturing processes that elicit endogenous tissue remodeling and repair. Yet despite recent advances in synthetic materials manufacturing, there remains a lack of cell-free, automated approaches for rapidly producing biomimetic heart valve scaffolds...
April 18, 2017: Biomaterials
https://www.readbyqxmd.com/read/28445786/metallo-%C3%AE-lactamase-inhibitors-by-bioisosteric-replacement-preparation-activity-and-binding
#3
Susann Skagseth, Sundus Akhter, Marianne H Paulsen, Zeeshan Muhammad, Silje Lauksund, Ørjan Samuelsen, Hanna-Kirsti S Leiros, Annette Bayer
Bacterial resistance is compromising the use of β-lactam antibiotics including carbapenems. The main resistance mechanism against β-lactams is hydrolysis of the β-lactam ring mediated by serine- or metallo-β-lactamases (MBLs). Although several inhibitors of MBLs have been reported, none has been developed into a clinically useful inhibitor. Mercaptocarboxylic acids are among the most prominent scaffolds reported as MBL inhibitors. In this study, the carboxylate group of mercaptocarboxylic acids was replaced with bioisosteric groups like phosphonate esters, phosphonic acids and NH-tetrazoles...
April 14, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28445727/environmental-enrichment-induces-pericyte-and-iga-dependent-wound-repair-and-lifespan-extension-in-a-colon-tumor-model
#4
Benjamin D Bice, Megan R Stephens, Stephanie J Georges, Ashlee R Venancio, Peter C Bermant, Annika V Warncke, Kajsa E Affolter, Julio R Hidalgo, Melinda L Angus-Hill
Environmental enrichment (EE) replicates mind-body therapy by providing complex housing to laboratory animals to improve their activity levels, behavior, and social interactions. Using a Tcf4(Het/+)Apc(Min/+)-mediated model of colon tumorigenesis, we found that EE vastly improved the survival of tumor-bearing animals, with differential effect on tumor load in male compared to female animals. Analysis of Tcf4(Het/+)Apc(Min/+) males showed drastically reduced expression of circulating inflammatory cytokines and induced nuclear hormone receptor (NHR) signaling, both of which are common in the wound repair process...
April 25, 2017: Cell Reports
https://www.readbyqxmd.com/read/28445699/journey-of-cystatins-from-being-mere-thiol-protease-inhibitors-to-at-heart-of-many-pathological-conditions
#5
REVIEW
Anas Shamsi, Bilqees Bano
Cystatins are thiol proteinase inhibitors (TPI), present ubiquitously in animals, plants and micro-organisms. These are not merely inhibitors rather they are at heart of many pathological conditions ranging from diabetes to renal failure. These are essential for maintenance of protein balance of the cell; once this balance gets disturbed, it may lead to cell death. Thus, cystatins cannot be merely regarded as TPI's as these have been found to play a pivotal role in tumorigenesis and neurodegenerative diseases...
April 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28445639/toward-covalent-organic-frameworks-bearing-three-different-kinds-of-pores-the-strategy-for-construction-and-cof-to-cof-transformation-via-heterogeneous-linker-exchange
#6
Cheng Qian, Qiao-Yan Qi, Guo-Fang Jiang, Fu-Zhi Cui, Yuan Tian, Xin Zhao
Covalent organic frameworks (COFs) are an emerging class of crystalline porous organic materials which are fabricated via reticular chemistry. Their topologic structures can be precisely predicted on the basis of the structures of building blocks. However, constructing COF with complicated structures has remained a great challenge, due to the limited strategies that can access to structural complexity of COFs. In this work, we have developed a new approach to produce COFs bearing three different kinds of pores...
April 26, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28445622/thiocarbohydrates-on-gold-nanoparticles-strong-influences-of-stereocenters-on-binding-affinitiy-and-interparticle-forces
#7
Torsten Linker, Prashant Pavashe, Werner Fudickar
Carbohydrates carrying thiol groups at the C-2 position have been attached to gold nanoparticles (AuNP) with stereocenters in close proximity to the surface for the first time. Their configurations can be clearly distinguished by the tendency of particle aggregation. AuNP surface plasmon resonance (SPR), x-ray photoelectron spectroscopy (XPS), and IR spectroscopy indicate that the thiocarbohydrates replace citrate molecules at different rates causing aggregation and eventually precipitation. A quantitative formulation of this aggregation process shows that reactivities can vary by several magnitudes...
April 26, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28445546/a-coral-algal-phase-shift-in-mesoamerica-not-driven-by-changes-in-herbivorous-fish-abundance
#8
Jesús Ernesto Arias-González, Tak Fung, Robert M Seymour, Joaquín Rodrigo Garza-Pérez, Gilberto Acosta-González, Yves-Marie Bozec, Craig R Johnson
Coral-algal phase shifts in which coral cover declines to low levels and is replaced by algae have often been documented on coral reefs worldwide. This has motivated coral reef management responses that include restriction and regulation of fishing, e.g. herbivorous fish species. However, there is evidence that eutrophication and sedimentation can be at least as important as a reduction in herbivory in causing phase shifts. These threats arise from coastal development leading to increased nutrient and sediment loads, which stimulate algal growth and negatively impact corals respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28445514/the-complexity-underlying-invasiveness-precludes-the-identification-of-invasive-traits-a-comparative-study-of-invasive-and-non-invasive-heterocarpic-atriplex-congeners
#9
Jana Doudová, Jan Douda, Bohumil Mandák
Heterocarpy enables species to effectively spread under unfavourable conditions by producing two or more types of fruit differing in ecological characteristics. Although it is frequent in annuals occupying disturbed habitats that are vulnerable to invasion, there is still a lack of congeneric studies addressing the importance of heterocarpy for species invasion success. We compared two pairs of heterocarpic Atriplex species, each of them comprising one invasive and one non-invasive non-native congener. In two common garden experiments, we (i) simulated the influence of different levels of nutrients and population density on plants grown from different types of fruits and examined several traits that are generally positively associated with invasion success, and (ii) grew plants in a replacement series experiment to evaluate resource partitioning between them and to compare their competitive ability...
2017: PloS One
https://www.readbyqxmd.com/read/28445482/questionable-science-and-reproducibility-in-electrical-brain-stimulation-research
#10
Martin E Héroux, Colleen K Loo, Janet L Taylor, Simon C Gandevia
Electrical brain stimulation (EBS) is a trendy new technique used to change brain function and treat neurological, psychiatric and psychological disorders. We were curious whether the published literature, which is dominated by positive results, reflects the experience of researchers using EBS. Specifically, we wanted to know whether researchers are able to reproduce published EBS effects and whether they engage in, but fail to report, questionable research practices. We invited 976 researchers to complete an online survey...
2017: PloS One
https://www.readbyqxmd.com/read/28445369/a-systematic-review-of-different-implants-and-approaches-for-proximal-interphalangeal-joint-arthroplasty
#11
Michiro Yamamoto, Sunitha Malay, Yuki Fujihara, Lin Zhong, Kevin C Chung
BACKGROUND: Outcomes after implant arthroplasty for primary degenerative and posttraumatic osteoarthritis of the proximal interphalangeal joint were different according to the implant design and surgical approach. The purpose of this systematic review was to evaluate outcomes of various types of implant arthroplasty for proximal interphalangeal joint osteoarthritis, with an emphasis on different surgical approaches. METHODS: The authors searched all available literature in the PubMed and EMBASE databases for articles reporting on outcomes of implant arthroplasty for proximal interphalangeal joint osteoarthritis...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28445302/cholestasis-caused-by-panhypopituitarism-and-acquired-cytomegalovirus-infection-in-a-2-month-old-male-infant-a-case-report
#12
U Chan, Wai-Tao Chan, Wei-Hsin Ting, Che-Sheng Ho, Hsi-Che Liu, Hung-Chang Lee
RATIONALE: Septo-optic dysplasia (SOD) is a rare congenital disorder that may cause jaundice in infants. However, it is usually prone to neglect and misdiagnosis in infants with cholestasis because endocrine disorder such as panhypopituitarism is rare in the cause of infantile cholestasis. We report a case of SOD concurrent with acquired cytomegalovirus (CMV) infection, who presented with prolonged jaundice as the first clinical sign. PATIENT CONCERNS: The patient was a 2-month-old male infant who presented with cholestasis, combined with fever and panhypopituitarism...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28445096/protection-from-oxidative-stress-in-immunocytes-of-the-colonial-ascidian-botryllus-schlosseri-transcript-characterization-and-expression-studies
#13
Nicola Franchi, Francesca Ballin, Loriano Ballarin
Botryllus schlosseri is a cosmopolitan colonial ascidian that undergoes cyclical generation changes, or take-overs, during which adult zooids are resorbed and replaced by their buds. At take-over, adult tissues undergo diffuse apoptosis and effete cells are massively ingested by circulating phagocytes, with a consequent increase in oxygen consumption and in production of reactive oxygen species (ROS). The latter are responsible for the death of phagocytes involved in the clearance of apoptotic cells and corpses by phagocytosis-induced apoptosis...
February 2017: Biological Bulletin
https://www.readbyqxmd.com/read/28445043/assembly-of-effective-halide-receptors-from-components-comparing-hydrogen-halogen-and-tetrel-bonds
#14
Steve Scheiner
Receptors for halide anions are constructed based on the imidazolium unit, and then replacing the H-bonding C-H group first by halogen-bonding C-I and then by tetrel-bonding C-SnH3 and C-SiF3. Attaching a phenyl ring to any of these species has little effect on its ability to bind a halide, but incorporation of a second imidazolium to the benzene connector, forming a bidentate dicationic receptor, greatly enhances the binding. Addition of electron-withdrawing F atoms to each imidazolium adds a further increment...
April 26, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28444987/platelet-count-spleen-length-and-platelet-count-to-spleen-length-ratio-for-the-diagnosis-of-oesophageal-varices-in-people-with-chronic-liver-disease-or-portal-vein-thrombosis
#15
REVIEW
Agostino Colli, Juan Cristóbal Gana, Jason Yap, Thomasin Adams-Webber, Natalie Rashkovan, Simon C Ling, Giovanni Casazza
BACKGROUND: Current guidelines recommend screening of people with oesophageal varices via oesophago-gastro-duodenoscopy at the time of diagnosis of hepatic cirrhosis. This requires that people repeatedly undergo unpleasant invasive procedures with their attendant risks, although half of these people have no identifiable oesophageal varices 10 years after the initial diagnosis of cirrhosis. Platelet count, spleen length, and platelet count-to-spleen length ratio are non-invasive tests proposed as triage tests for the diagnosis of oesophageal varices...
April 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28444977/efficacy-of-postoperative-prophylactic-antibiotics-in-reducing-permanent-pacemaker-infections
#16
Wen-Huang Lee, Ting-Chun Huang, Li-Jen Lin, Po-Tseng Lee, Chih-Chan Lin, Cheng-Han Lee, Ting-Hsing Chao, Yi-Heng Li, Ju-Yi Chen
BACKGROUND: Despite limited evidence, postoperative prophylactic antibiotics are often used in the setting of permanent pacemaker implantation or replacement. The aim of this study is to investigate the efficacy of postoperative antibiotics. HYPOTHESIS: Postoperative prophylactic antibiotics may be not clinically useful. METHODS: We recruited 367 consecutive patients undergoing permanent pacemaker implantation or generator replacement at a tertiary referral center...
April 26, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28444958/role-of-cytochrome-p450-3a4-and-1a2-phenotyping-in-patients-with-advanced-non-small-cell-lung-cancer-nsclc-receiving-erlotinib-treatment
#17
Zinnia P Parra-Guillen, Peter B Berger, Manuel Haschke, Massimiliano Donzelli, Daria Winogradova, Bogumila Pfister, Martin Früh, Charlotte Kloft, Stephan Krähenbühl, Silke Gillessen, Markus Joerger
Erlotinib is metabolized by cytochrome p450 (CYP) 3A and CYP1A. This study assessed CYP3A4 (midazolam) and CYP1A2 (caffeine) phenotyping in plasma and dried blood spots (DBS) for predicting the pharmacokinetics and toxicity of erlotinib in 36 patients with advanced NSCLC. On day 1, erlotinib 150 mg OD. was initiated, and the 2 oral probe drugs midazolam (2mg) and caffeine (100mg) were added on day 1. Plasma and DBS were collected for erlotinib, OSI-420 and probe drugs for up to 6 hr on day 1 and 2-weekly up to week 10...
April 26, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28444934/dynamic-iminoboronate-based-boroxine-chemistry-for-the-design-of-ambient-humidity-sensitive-self-healing-polymers
#18
Sébastien Delpierre, Bertrand Willocq, Julien De Winter, Philippe Dubois, Pascal Gerbaux, Jean-Marie Raquez
Developing intrinsic self-healing polymeric materials is of great interest nowadays to extend material lifetime and/or prevent the replacement of damaged pieces. Spontaneously humidity-sensitive healable polymer network built around dynamic covalent B-O bonds was templated by using iminoboronate-based boroxine derivatives. Taking advantage of the dynamic boroxine/boronic acid equilibrium and iminoboronate chemistry, it is possible to construct polymeric materials able to self-heal without requiring any energy-demanding external activation...
April 26, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28444772/multi-atlas-approach-with-local-registration-goodness-weighting-for-mri-based-electron-density-mapping-of-head-and-neck-anatomy
#19
Reza Farjam, Neelam Tyagi, Harini Veeraraghavan, Aditya Apte, Kristen Zakian, Margie A Hunt, Joseph O Deasy
PURPOSE: The growing use of magnetic resonance imaging (MRI) as a substitute for computed tomography-based treatment planning requires the development of effective algorithms to generate electron density maps for treatment planning and patient setup verification. The purpose of this work was to develop a method to synthesize computerized tomography (CT) for MR-only radiotherapy of head and neck cancer patients. METHODS: The algorithm is based on registration of multiple patient datasets containing both MRI and CT images (a "multi-atlas" algorithm)...
April 26, 2017: Medical Physics
https://www.readbyqxmd.com/read/28444760/vancomycin-levels-are-frequently-subtherapeutic-in-critically-ill-patients-a-prospective-observational-study
#20
V Bakke, H Sporsem, E Von der Lippe, I Nordøy, Y Lao, H C Nyrerød, L Sandvik, K R Hårvig, J F Bugge, E Helset
BACKGROUND: Appropriate utilization of vancomycin is important to attain therapeutic targets while avoiding clinical failure and the development of antimicrobial resistance. Our aim was to observe the use of vancomycin in an intensive care population, with the main focus on achievement of therapeutic serum concentrations (15-20 mg/l) and to evaluate how this was influenced by dose regimens, use of guidelines and therapeutic drug monitoring. METHODS: A prospective observational study was carried out in the intensive care units at two tertiary hospitals in Norway...
April 25, 2017: Acta Anaesthesiologica Scandinavica
keyword
keyword
40829
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"