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https://www.readbyqxmd.com/read/28719866/cell-competition-in-mammals-novel-homeostatic-machinery-for-embryonic-development-and-cancer-prevention
#1
REVIEW
Takeshi Maruyama, Yasuyuki Fujita
In the multi-cellular community, cells with different properties often compete with each other for survival and space. This process is named cell competition and was originally discovered in Drosophila. Recent studies have revealed that comparable phenomena also occur in mammals under various physiological and pathological conditions. Within the epithelium, normal cells often recognize the presence of the neighboring transformed cells and actively eliminate them from the epithelium; a process termed EDAC (Epithelial Defense Against Cancer)...
July 15, 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/28712890/amburana-cearensis-seed-extract-protects-brain-mitochondria-from-oxidative-stress-and-cerebellar-cells-from-excitotoxicity-induced-by-glutamate
#2
E P L Pereira, C S Santos, J Amparo, R Short, Y Nuñez-Figueredo, L G Fernandez, P R Ribeiro, S Braga-de-Souza, V D A Silva, S L Costa
ETHNOPHARMACOLOGICAL RELEVANCE: Amburana cearensis (Allemao) A.C.Sm. is a medicinal plant of the Brazilian Caatinga reported to present antioxidant and anti-inflammatory activity. This study aimed to evaluate the neuroprotective effect of the extracts obtained from the seeds of A. cearensis in primary cultures of cerebellar cells subjected to excitotoxicity induced by glutamate and brain mitochondria submitted to oxidative stress. MATERIALS: and methods: Primary cultures of cerebellar cells were treated with the ethanol (ETAC), hexane (EHAC), dichloromethane (EDAC) and ethyl acetate (EAAC) extracts of the seeds of A...
July 13, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28693328/eliminating-disparities-in-asthma-care-identifying-broad-challenges-in-quality-improvement
#3
Joseph P Anarella, Victoria L Wagner, Susan G McCauley, Jennifer B Mane, Patricia A Waniewski
Racial disparities in asthma care persist in New York State's Medicaid Program. African Americans with asthma experience higher rates of emergency department visits and inpatient hospitalizations, coupled with lower rates of long-term control medication use compared to other racial/ethnic groups. Within this context, and with funding from the Centers for Disease Control and Prevention, the New York State Department of Health designed and implemented the Eliminating Disparities in Asthma Care (EDAC) Collaborative to improve the quality of asthma care delivered in 7 provider sites located in Central Brooklyn, New York...
December 1, 2016: American Journal of Medical Quality: the Official Journal of the American College of Medical Quality
https://www.readbyqxmd.com/read/28620130/circulating-microparticles-are-prognostic-biomarkers-in-advanced-non-small-cell-lung-cancer-patients
#4
Chin-Chou Wang, Chia-Cheng Tseng, Huang-Chih Chang, Kuo-Tung Huang, Wen-Feng Fang, Yu-Mu Chen, Cheng-Ta Yang, Chang-Chun Hsiao, Meng-Chih Lin, Chi-Kung Ho, Hon-Kan Yip
We investigated whether circulating microparticles (MPs) could serve as prognostic biomarkers in non-small cell lung cancer (NSCLC) patients. We enrolled 25 control subjects and 136 NSCLC patients categorized into disease-progression (DP, n=42) and disease-control (DC, n=94) groups. Flow cytometric analysis showed that levels of four types of circulating microparticles (EDAc-MPs, EDAp-MPs, PDAc-MPs and PDAp-MPs) were higher in the study patients than the control subjects (P < 0.04). DP patients showed poor initially performance status and more non-adenocarcinomas than DC patients...
June 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28597590/in-vitro-evaluation-of-pediatric-hollow-fiber-membrane-oxygenators-on-hemodynamic-performance-and-gaseous-microemboli-handling-an-international-multicenter-multidisciplinary-approach
#5
Shigang Wang, Luiz F Caneo, Marcelo B Jatene, Fábio B Jatene, Idagene A Cestari, Allen R Kunselman, Akif Ündar
The objective of this study was to compare the hemodynamic performances and gaseous microemboli (GME) handling ability of two pediatric oxygenators in a simulated pediatric cardiopulmonary bypass (CPB) model and the importance of adding an arterial filter in the circuit. The circuit consisted of a Braile Infant oxygenator or a Maquet Quadrox-I Pediatric oxygenator without integrated arterial filter (parallel arrangement), 1/4 in. ID tubing A-V loop, and a 12-Fr arterial cannula, primed with lactated Ringer's solution and packed red blood cells...
June 8, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28557862/quantification-of-postmembrane-gaseous-microembolization-during-venoarterial-extracorporeal-membrane-oxygenation
#6
York Jiao, Keith E Gipson, Pramod Bonde, Abeel Mangi, Robert Hagberg, David J Rosinski, Jeffrey B Gross, Robert B Schonberger
Prolonged use of venoarterial extracorporeal membrane oxygenation (VA ECMO) may be complicated by end-organ dysfunction. Although gaseous microemboli (GME) are thought to damage end organs during cardiopulmonary bypass, patient exposures to GME have not been well characterized during VA ECMO. We therefore performed an observational study of GME in adult VA ECMO patients, with correlation to clinical events during routine patient care. After institutional review board (IRB) approval, we used two Doppler probes to detect GME noninvasively in extracorporeal membrane oxygenation (ECMO) circuits on four patients for 15 hours total while also recording patient care events...
May 23, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28549680/thiomers-impact-of-in-situ-cross-linkers-on-mucoadhesive-properties
#7
Hung Thanh Lam, Gintare Leonaviciute, Ožbej Zupančič, Andreas Bernkop-Schnürch
The aim of this study was to evaluate the impact of in situ cross-linkers on the gelling and mucoadhesive properties of thiomers. Polycarbophil-cysteine conjugate (PCP-cys) was synthesized by covalent attachment of l-cysteine to polycarbophil via amide bond formation mediated by 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDAC) and N-hydroxysuccinimide (NHS) whereas in situ cross-linkers (PAA-cys-MNA) were synthesized by the same bond formation between poly(acrylic acid) (PAA) of 2.1-, 6-, and 15kDa and 2-((2-amino-2-carboxyethyl)disulfanyl)nicotinic acid (cys-MNA) used as ligand...
August 30, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28441773/overview-of-four-functional-classification-systems-commonly-used-in-cerebral-palsy
#8
REVIEW
Andrea Paulson, Jilda Vargus-Adams
Cerebral palsy (CP) is the most common physical disability in childhood. CP comprises a heterogeneous group of disorders that can result in spasticity, dystonia, muscle contractures, weakness and coordination difficulty that ultimately affects the ability to control movements. Traditionally, CP has been classified using a combination of the motor type and the topographical distribution, as well as subjective severity level. Imprecise terms such as these tell very little about what a person is able to do functionally and can impair clear communication between providers...
April 24, 2017: Children
https://www.readbyqxmd.com/read/28435499/the-fast-and-the-furious-low-risk-chest-pain-and-the-rapid-rule-out-protocol
#9
REVIEW
Maite Anna Huis In 't Veld, Louise Cullen, Simon A Mahler, Barbra E Backus, Zachary D W Dezman, Amal Mattu
Accelerated diagnostic pathways (ADP) have been designed to identify low-risk chest pain patients in the emergency department. This review article discusses the Asia-Pacific Evaluation of Chest Pain Trial (ASPECT) score, the Accelerated Diagnostic Protocol for Chest Pain Trial (ADAPT) score, the Emergency Department Assessment of Chest Pain Score (EDACS), the HEARTScore and the HEART pathway. These ADPs have been validated in various studies and aid the emergency provider with identifying the low-risk chest pain patient who is appropriate for discharge home, while at the same time highlighting those patients who would benefit from further in-patient work up...
April 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28414314/cell-competition-with-normal-epithelial-cells-promotes-apical-extrusion-of-transformed-cells-through-metabolic%C3%A2-changes
#10
Shunsuke Kon, Kojiro Ishibashi, Hiroto Katoh, Sho Kitamoto, Takanobu Shirai, Shinya Tanaka, Mihoko Kajita, Susumu Ishikawa, Hajime Yamauchi, Yuta Yako, Tomoko Kamasaki, Tomohiro Matsumoto, Hirotaka Watanabe, Riku Egami, Ayana Sasaki, Atsuko Nishikawa, Ikumi Kameda, Takeshi Maruyama, Rika Narumi, Tomoko Morita, Yoshiteru Sasaki, Ryosuke Enoki, Sato Honma, Hiromi Imamura, Masanobu Oshima, Tomoyoshi Soga, Jun-Ichi Miyazaki, Michael R Duchen, Jin-Min Nam, Yasuhito Onodera, Shingo Yoshioka, Junichi Kikuta, Masaru Ishii, Masamichi Imajo, Eisuke Nishida, Yoichiro Fujioka, Yusuke Ohba, Toshiro Sato, Yasuyuki Fujita
Recent studies have revealed that newly emerging transformed cells are often apically extruded from epithelial tissues. During this process, normal epithelial cells can recognize and actively eliminate transformed cells, a process called epithelial defence against cancer (EDAC). Here, we show that mitochondrial membrane potential is diminished in RasV12-transformed cells when they are surrounded by normal cells. In addition, glucose uptake is elevated, leading to higher lactate production. The mitochondrial dysfunction is driven by upregulation of pyruvate dehydrogenase kinase 4 (PDK4), which positively regulates elimination of RasV12-transformed cells...
May 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28404459/preparation-of-pseudomonas-aeruginosa-alginate-flagellin-immunoconjugate
#11
Sobhan Faezi, Ahmad Reza Bahrmand, Mehdi Mahdavi, Seyed Davar Siadat, Soroush Sardari, Iraj Nikokar, Korosh Khanaki, Ebrahim Mirzajani, Gholamreza Goudarzi
Mucoid strains of Pseudomonas aeruginosa are closely associated with chronic pulmonary infections. In this report we describe a straightforward approach to conjugate high molecular weight alginate to type b-flagellin (FLB) and investigation of its bioactivity. The conjugation process was performed by using ADH and EDAC. The endotoxin was eliminated from the candidate vaccine by LPS removal resin followed by LAL test. The bioconjugate molecules were verified by simultaneously determination of polysaccharide/protein content followed by gel filtration chromatography and FTIR spectroscopy...
April 10, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28276586/the-eating-and-drinking-ability-classification-system-in-a-population-based-sample-of-preschool-children-with-cerebral-palsy
#12
Katherine A Benfer, Kelly A Weir, Kristie L Bell, Robert S Ware, Peter S W Davies, Roslyn N Boyd
AIM: To determine (1) the reproducibility of the Eating and Drinking Ability Classification System (EDACS); (2) EDACS classification distribution in a population-based cohort with cerebral palsy (CP); and (3) the relationships between the EDACS and clinical mealtime assessment, other classifications, and health outcomes. METHOD: This was a cross-sectional population-based cohort study of 170 children with CP at 3 years to 5 years (mean 57.6mo, standard deviation [SD] 8...
June 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28272743/functional-outcomes-in-children-and-young-people-with-dyskinetic-cerebral-palsy
#13
Elegast Monbaliu, Mary-Grace De La Peña, Els Ortibus, Guy Molenaers, Jan Deklerck, Hilde Feys
AIM: This cross-sectional study aimed to map the functional profile of individuals with dyskinetic cerebral palsy (CP), to determine interrelationships between the functional classification systems, and to investigate the relationship of functional abilities with dystonia and choreoathetosis severity. METHODS: Fifty-five children (<15y) and young people (15-22y) (30 males, 25 females; mean age 14y 6mo, standard deviation 4y 1mo) with dyskinetic CP were assessed using the Gross Motor Function Classification System (GMFCS), Manual Ability Classification System (MACS), Communication Function Classification System (CFCS), Eating and Drinking Ability Classification System (EDACS), and Viking Speech Scale (VSS), as well as the Dyskinesia Impairment Scale...
June 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28270608/rab5-regulated-endocytosis-plays-a-crucial-role-in-apical-extrusion-of-transformed-cells
#14
Sayaka Saitoh, Takeshi Maruyama, Yuta Yako, Mihoko Kajita, Yoichiro Fujioka, Yusuke Ohba, Nobuhiro Kasai, Natsu Sugama, Shunsuke Kon, Susumu Ishikawa, Takashi Hayashi, Tomohiro Yamazaki, Masazumi Tada, Yasuyuki Fujita
Newly emerging transformed cells are often eliminated from epithelial tissues. Recent studies have revealed that this cancer-preventive process involves the interaction with the surrounding normal epithelial cells; however, the molecular mechanisms underlying this phenomenon remain largely unknown. In this study, using mammalian cell culture and zebrafish embryo systems, we have elucidated the functional involvement of endocytosis in the elimination of RasV12-transformed cells. First, we show that Rab5, a crucial regulator of endocytosis, is accumulated in RasV12-transformed cells that are surrounded by normal epithelial cells, which is accompanied by up-regulation of clathrin-dependent endocytosis...
March 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28246585/nanoparticle-linked-antagonist-for-leptin-signaling-inhibition-in-breast-cancer
#15
Tia Harmon, Adriana Harbuzariu, Viola Lanier, Crystal C Lipsey, Ward Kirlin, Lily Yang, Ruben R Gonzalez-Perez
AIM: To develop a leptin peptide receptor antagonist linked to nanoparticles and determine its effect on viability of breast cancer cells. METHODS: The leptin antagonist, LPrA2, was coupled via EDAC [1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide] to iron oxide nanoparticles (IONP-LPrA2) to increase its efficacy. IONP-LPrA2 conjugation was confirmed by Western blot and nanoparticle tracking analysis. Human triple negative breast cancer (TNBC) MDA-MB-231, HCC1806 and estrogen receptor positive (ER(+)) MCF-7 cells were analyzed for the expression of the leptin receptor, Ob-R...
February 10, 2017: World Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28157657/detecting-circulating-antibodies-by-controlled-surface-modification-with-specific-target-proteins-application-to-malaria
#16
Ana R Cardoso, Gustavo Cabral-Miranda, Arturo Reyes-Sandoval, Martin F Bachmann, M Goreti F Sales
Sensitive detection of specific antibodies by biosensors has become of major importance for monitoring and controlling epidemics. Here we report a development of a biosensor able to specifically measure antibodies in a drop of unmodified blood serum. Within minutes, the detection system measures presence of antibodies against Plasmodium vivax, a causing agent for malaria. The biosensor consists of a layer of carbon nanotubes (CNTs) which were casted on a carbon working electrode area of a three-electrode system and oxidized...
May 15, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28108220/missed-myocardial-infarctions-in-ed-patients-prospectively-categorized-as-low-risk-by-established-risk-scores
#17
MULTICENTER STUDY
A J Singer, M P Than, S Smith, P McCullough, T W Barrett, R Birkhahn, M Reed, H C Thode, W D Arnold, L B Daniels, C de Filippi, G Headden, W F Peacock
STUDY OBJECTIVES: Few studies have prospectively compared multiple cardiac risk prediction scores. We compared the rate of missed acute myocardial infarction (AMI) in chest pain patients prospectively categorized as low risk by unstructured clinical impression, and by HEART, TIMI, GRACE, and EDACS scores, in combination with two negative contemporary cardiac troponins (cTn) available in the U.S. METHODS: We enrolled 434 patients with chest pain presenting to one of seven emergency departments (ED)...
May 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28074723/-a-woman-with-excessive-dynamic-airway-collapse
#18
R L T N Salden, S Postma
BACKGROUND: 'Excessive dynamic airway collapse' (EDAC) is a form of tracheamalacia, that does not affect the rings of cartilage on the anterior side of the trachea, but in which the posterior wall of the trachea collapses during inspiration and expiration. CASE DESCRIPTION: An 80 year-old woman presented to the accident and emergency department with dyspnoea and severe inspiratory and expiratory stridor, with sudden onset a few hours previously. Following a series of investigations, she was shown to have a narrowing of the trachea, radiating from the posterior wall...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28005835/our-experience-on-silicone-y-stent-for-severe-copd-complicated-with-expiratory-central-airway-collapse
#19
Mehmet A Ozgul, Erdogan Cetinkaya, Mustafa Cortuk, Sinem Iliaz, Elif Tanriverdi, Sule Gul, Guler Ozgul, Hilal Onaran, Kenan Abbasli, Huseyin E Dincer
BACKGROUND: Expiratory central airway collapse (ECAC) is abnormal central airway narrowing during expiration. ECAC involves 2 different pathophysiological entities as tracheobronchomalacia and excessive dynamic airway collapse (EDAC). Although the exact cause is unknown, chronic obstructive pulmonary disease (COPD) is frequently accompanied by ECAC. Although there are various publications on the relationship between COPD and ECAC, there are very few data for stent placement in patients with tracheobronchomalacia accompanied severe COPD...
April 2017: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/27987786/comparison-of-glutaraldehyde-and-carbodiimides-to-crosslink-tissue-engineering-scaffolds-fabricated-by-decellularized-porcine-menisci
#20
COMPARATIVE STUDY
Shuang Gao, Zhiguo Yuan, Weimin Guo, Mingxue Chen, Shuyun Liu, Tingfei Xi, Quanyi Guo
The objectives of this study were to fabricate porous scaffolds using decellularized meniscus, and to explore a preferable crosslinking condition to enhance mechanical properties of scaffolds. Moreover, the microstructure, porosity, biodegradation and cytotoxicity were also evaluated. EDAC or GTA in different concentration was used to crosslink scaffolds. FTIR demonstrated functional groups change in crosslinking process. SEM photography showed that crosslinked scaffolds had blurry edges, which resulted scaffolds crosslinked by 1...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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