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https://www.readbyqxmd.com/read/28324860/direct-detection-of-two-different-tumor-derived-extracellular-vesicles-by-sam-aunis-lspr-biosensor
#1
Abhimanyu Thakur, Guangyu Qiu, Siu-Pang Ng, Jintao Guan, Jianbo Yue, Youngjin Lee, Chi-Man Lawrence Wu
Extracellular vesicles (EVs) are abundant in various biological fluids including blood, saliva, urine, as well as extracellular milieu. Accumulating evidence has indicated that EVs, which contain functional proteins and small RNAs, facilitate intercellular communication between neighbouring cells, and are critical to maintain various physiological processes. In contrast, EV-derived toxic signals can spread out over the tissues adjacent to the injured area in certain diseases, including brain tumors and neurodegenerative disorders...
March 18, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28324670/relationship-of-antibiotic-treatment-to-recovery-after-acute-fev1-decline-in-children-with-cystic-fibrosis
#2
Wayne J Morgan, Jeffrey S Wagener, David J Pasta, Stefanie J Millar, Donald R VanDevanter, Michael W Konstan
RATIONALE: Children with cystic fibrosis often suffer acute declines in lung function. We previously showed that such declines are not always treated with antibiotics, but did not assess whether treatment improves the likelihood of recovery. OBJECTIVES: To determine whether new antibiotic treatment was associated with recovery from acute FEV1 decline. METHODS: We studied episodes of FEV1 decline (≥10% from baseline) from the Epidemiologic Study of Cystic Fibrosis...
March 21, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28323913/accrual-of-bone-mass-in-children-and-adolescents-with-cystic-fibrosis
#3
Sonakshi Sharma, Mirjana Jaksic, Sheryl Fenwick, Catherine Byrnes, Tim Cundy
Context: Low bone density is a recognised complication of cystic fibrosis (CF). Hypothesis: Accrual of bone mass is most impaired in the sickest children, as judged by nutritional status and pulmonary function. Design: Retrospective analysis of correlation between lumbar spine BMD, BMI and FEV1 z-score in children and adolescents with CF. Setting: Specialist CF service at a pediatric hospital. Patients: 60 participants aged 5...
February 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323898/perfluorocarbon-reduces-cell-damage-from-blast-injury-by-inhibiting-signal-paths-of-nf-%C3%AE%C2%BAb-mapk-and-bcl-2-bax-signaling-pathway-in-a549-cells
#4
Zhaorui Zhang, Zhixin Liang, Huaidong Li, Chunsun Li, Zhen Yang, Yanqin Li, Danyang She, Lu Cao, Wenjie Wang, Changlin Liu, Liangan Chen
BACKGROUND AND OBJECTIVE: Blast lung injury is a common type of blast injury and has very high mortality. Therefore, research to identify medical therapies for blast injury is important. Perfluorocarbon (PFC) is used to improve gas exchange in diseased lungs and has anti-inflammatory functions in vitro and in vivo. The aim of this study was to determine whether PFC reduces damage to A549 cells caused by blast injury and to elucidate its possible mechanisms of action. STUDY DESIGN AND METHODS: A549 alveolar epithelial cells exposed to blast waves were treated with and without PFC...
2017: PloS One
https://www.readbyqxmd.com/read/28323670/prevention-of-respiratory-complications-of-the-surgical-patient-actionable-plan-for-continued-process-improvement
#5
Katarina J Ruscic, Stephanie D Grabitz, Maíra I Rudolph, Matthias Eikermann
PURPOSE OF REVIEW: Postoperative respiratory complications (PRCs) increase hospitalization time, 30-day mortality and costs by up to $35 000. These outcomes measures have gained prominence as bundled payments have become more common. RECENT FINDINGS: Results of recent quantitative effectiveness studies and clinical trials provide a framework that helps develop center-specific treatment guidelines, tailored to minimize the risk of PRCs. The implementation of those protocols should be guided by a local, respected, and visible facilitator who leads proper implementation while inviting center-specific input from surgeons, anesthesiologists, and other perioperative stakeholders...
March 20, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28323488/psychometric-properties-of-a-chinese-asthma-quality-of-life-questionnaire
#6
Ningqun Wang, Xiaobo Huang, Wenqiang Chen, Xiaomei Zhang, Yongsheng Zhang, Yujing Chen
PURPOSE: To assess the acceptability, reliability, validity, and responsiveness of the Chinese Asthma Quality of Life Questionnaire (C-AQLQ) in a sample of Chinese asthma patients. METHODS: The C-AQLQ and Short Form 36 Health Survey (SF-36) scales were administered to patients at baseline and 3 months later. Asthma severity condition and lung function were evaluated. Necessary data were gathered to assess the psychometric properties such as the feasibility, internal consistency, test-retest reliability, structural validity, discriminant validity, convergent validity, and responsiveness of the C-AQLQ...
February 21, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28320202/identification-and-expression-of-equine-mer-derived-mirnas
#7
Jeong-An Gim, Heui-Soo Kim
MicroRNAs (miRNAs) are single-stranded, small RNAs (21-23 nucleotides) that function in gene silencing and translational inhibition via the RNA interference mechanism. Most miRNAs originate from host genomic regions, such as intergenic regions, introns, exons, and transposable elements (TEs). Here, we focused on the palindromic structure of medium reiteration frequencies (MERs), which are similar to precursor miRNAs. Five MER consensus sequences (MER5A1, MER53, MER81, MER91C, and MER117) were matched with paralogous transcripts predicted to be precursor miRNAs in the horse genome (equCab2) and located in either intergenic regions or introns...
March 21, 2017: Molecules and Cells
https://www.readbyqxmd.com/read/28320089/mir-448-is-a-novel-prognostic-factor-of-lung-squamous-cell-carcinoma-and-regulates-cells-growth-and-metastasis-by-targeting-dclk1
#8
Changting Shan, Fan Fei, Fengzhu Li, Bo Zhuang, Yulong Zheng, Yufeng Wan, Jianhui Chen
MicroRNA-448 (miR-448) has been showed to be low-expressed and function as tumor suppressor in most human cancers. However, there are limited reports on the clinical significance and biological function of miR-448 in lung squamous cell carcinoma. In this study, we observed that miR-448 expression was decreased in lung squamous cell carcinoma tissues and cell lines. Meanwhile, miR-448 expression associated with differentiated degree, T classification (tumor size), N classification (lymph node metastasis), M classification (distant metastasis), clinical stage and prognosis of lung squamous cell carcinoma patients...
March 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28319552/evaluation-of-lung-function-and-clinical-features-of-the-ultrasound-guided-stellate-ganglion-block-with-2-different-concentrations-of-a-local-anesthetic-a-randomized-controlled-trial
#9
Won-Joong Kim, Hahck Soo Park, Myung Sub Yi, Gill-Hoi Koo, Hwa-Yong Shin
BACKGROUND: One possible complication of stellate ganglion block (SGB) is respiratory compromise. No study has yet addressed the comparison of its effect on lung function and clinical features, including Horner's syndrome, changes in temperature, sensory and motor functions, and adverse events of lower versus higher concentrations (LC and HC, respectively) of local anesthetics in an ultrasound-guided SGB. METHODS: Fifty patients were randomized into 1 of 2 groups: the LC group (5 mL of 0...
April 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28319522/a-numerical-simulation-comparing-a-cavopulmonary-assist-device-and-va-ecmo-for-failing-fontan-support
#10
Po-Lin Hsu, Dongfang Wang, Cherry Ballard-Croft, Dawei Xiao, Joseph B Zwischenberger
A cavopulmonary assist device (CPAD) has been developed for failing Fontan support. This CPAD pumps blood from superior/inferior vena cavae to pulmonary artery. In this study, we compared failing Fontan support with CPAD versus VA ECMO in silico. A numerical lumped-parameter circulatory system model was used to simulate Fontan circulation. Failing Fontan was simulated by increased pulmonary resistance. Central venous pressure (CVP), mean pulmonary arterial pressure (mPAP), left atrial pressure (LAP), and univentricular outflow (CO) were simulated and compared to published clinical data...
March 17, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28319412/un-methylation-of-the-survivin-gene-has-no-effect-on-immunohistochemical-expression-of-survivin-protein-in-lung-cancer-patients-with-squamous-cell-carcinoma
#11
O Yalcin, M Budak
Survivin is a member of the inhibitor of apoptosis (IAP) family. The function of the survivin protein is to inhibit caspase activation, thereby leading to negative regulation of apoptosis or programmed cell death. This has been shown by the disruption of survivin induction pathways leading to an increased apoptosis and decreased tumour growth. These data suggest that survivin may provide a new target for cancer treatment, which would distinguish transformed cells from normal cells. In the present study, we aimed to investigate exon 1 of the survivin gene by means of methylation-specific PCR and evaluate its impact on survivin protein expression following DNA isolation and bisulphite modification in paraffin-embedded normal and tumour tissues of lung cancer patients with squamous cell carcinoma...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28319320/the-endochondral-bone-protein-chm1-sustains-an-undifferentiated-invasive-phenotype-promoting-lung-metastasis-in-ewing-sarcoma
#12
Kristina von Heyking, Julia Calzada-Wack, Stefanie Göllner, Frauke Neff, Oxana Schmidt, Tim Hensel, David Schirmer, Annette Fasan, Irene Esposito, Carsten Müller-Tidow, Poul H Sorensen, Stefan Burdach, Günther H S Richter
Ewing sarcomas (ES) are highly malignant, osteolytic bone or soft tissue tumors, which are characterized by EWS-ETS translocations and early metastasis to lung and bone. In this study, we investigated the role of the BRICHOS chaperone domain-containing endochondral bone protein chondromodulin I (CHM1) in ES pathogenesis. CHM1 is significantly over-expressed in ES, and chromosome immunoprecipitation (ChIP) data demonstrate CHM1 to be directly bound by an EWS-ETS translocation, EWS-FLI1. Using RNA interference we observed that CHM1 promoted chondrogenic differentiation capacity of ES cells but decreased the expression of osteolytic genes such as HIF1A, IL6, JAG1 and VEGF...
March 20, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28319189/lung-function-parameters-improve-prediction-of-vo2peak-in-an-elderly-population-the-generation-100-study
#13
Erlend Hassel, Dorthe Stensvold, Thomas Halvorsen, Ulrik Wisløff, Arnulf Langhammer, Sigurd Steinshamn
Peak oxygen uptake (VO2peak) is an indicator of cardiovascular health and a useful tool for risk stratification. Direct measurement of VO2peak is resource-demanding and may be contraindicated. There exist several non-exercise models to estimate VO2peak that utilize easily obtainable health parameters, but none of them includes lung function measures or hemoglobin concentrations. We aimed to test whether addition of these parameters could improve prediction of VO2peak compared to an established model that includes age, waist circumference, self-reported physical activity and resting heart rate...
2017: PloS One
https://www.readbyqxmd.com/read/28319071/xrn2-promotes-emt-and-metastasis-through-regulating-maturation-of-mir-10a
#14
H Zhang, Y Lu, E Chen, X Li, B Lv, H G Vikis, P Liu
MicroRNAs (miRNAs) have been proposed as critical regulatory molecules in the epithelial-mesenchymal transition (EMT) program. However, the roles of mature miRNA biogenesis during EMT process needs to be defined. Here we determined that increased expression of XRN2 induced EMT and promoted metastasis in vitro and in vivo. Furthermore, we uncovered that XRN2 functions as pro-metastatic gene, which accelerates miR-10a maturation by binding pre-miR-10a in a DICER-independent manner. These findings suggest that XRN2 is a novel regulator of EMT that contributes to the metastatic processes in lung cancer through a novel miRNA regulatory mechanism...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28318885/genetic-association-of-the-functional-cdhr3-genotype-with-early-onset-adult-asthma-in-japanese-populations
#15
Jun Kanazawa, Hironori Masuko, Yohei Yatagai, Tohru Sakamoto, Hideyasu Yamada, Yoshiko Kaneko, Haruna Kitazawa, Hiroaki Iijima, Takashi Naito, Takefumi Saito, Emiko Noguchi, Satoshi Konno, Masaharu Nishimura, Tomomitsu Hirota, Mayumi Tamari, Nobuyuki Hizawa
BACKGROUND: Recent studies have demonstrated that a coding SNP (rs6967330, Cys529→Tyr) in cadherin-related family member 3 (CDHR3), which was previously associated with wheezing illness and hospitalizations in infancy, could support efficient human rhinovirus C (RV-C) entry and replication. Here, we sought to examine the genetic contribution of this variant to the development of adult asthma. METHODS: We performed a candidate gene case-control association study of 2 independent Japanese populations (a total of 3366 adults)...
March 16, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28318752/cystathionine-gamma-lyase-deficient-mice-are-protected-against-the-development-of-multiorgan-failure-and-exhibit-reduced-inflammatory-response-during-burn
#16
Akbar Ahmad, Nadiya Druzhyna, Csaba Szabo
Considering the role of H2S in critical illness, the aim of this study was to compare the outcome of burn in wild-type mice and in mice deficient in CSE, one of the principal mammalian H2S-generating enzymes. Animals were subjected to scald burn. Outcome variables included indices of organ injury, clinical chemistry parameters and plasma levels of inflammatory mediators. Plasma levels of H2S significantly increased in response to burn in wild-type mice, but remained unchanged in CSE(-/-) mice. Expression of the three H2S-producing enzymes (CSE, CBS and 3-MST) in the lung and liver, and the capacity of tissue homogenates to produce H2S, however, was not affected by burn...
March 15, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28318340/characteristic-plethysmographic-findings-in-a-guinea-pig-model-of-copd
#17
Edgar Ramírez-Ramírez, Armando Torres-Ramírez, Jesús Alquicira-Mireles, Abraham Cañavera-Constantino, Patricia Segura-Medina, Martha Montaño-Ramírez, Carlos Ramos-Abraham, Mario H Vargas, José Luis Arreola-Ramírez
AIM OF THE STUDY: Long-term exposure to cigarette smoke generates chronic obstructive pulmonary disease (COPD) in guinea pigs, but a comprehensive evaluation of changes in lung function, as assessed by barometric whole body plethysmography (WBP), is lacking. MATERIALS AND METHODS: Female guinea pigs were exposed to the smoke of 20 cigarettes/day, 5 days/week, during 10 weeks (COPD group, n = 8), and were compared with unexposed female guinea pigs of the same age (control group, n = 8)...
March 20, 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28317464/molecular-mechanisms-of-pulmonary-response-progression-in-crystalline-silica-exposed-rats
#18
Rajendran Sellamuthu, Christina Umbright, Jenny R Roberts, Shih-Houng Young, Diana Richardson, Walter McKinney, Bean T Chen, Shengqiao Li, Michael Kashon, Pius Joseph
An understanding of the mechanisms underlying diseases is critical for their prevention. Excessive exposure to crystalline silica is a risk factor for silicosis, a potentially fatal pulmonary disease. Male Fischer 344 rats were exposed by inhalation to crystalline silica (15 mg/m(3), six hours/day, five days) and pulmonary response was determined at 44 weeks following termination of silica exposure. Additionally, global gene expression profiling in lungs and BAL cells and bioinformatic analysis of the gene expression data were done to understand the molecular mechanisms underlying the progression of pulmonary response to silica...
March 19, 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/28316929/cytomegalovirus-pneumonitis-complicated-by-a-central-peribronchial-pattern-of-organising-pneumonia
#19
Maria M Cuadrado, Asia Ahmed, Ben Carpenter, Jeremy S Brown
We present five cases of cytomegalovirus (CMV) pneumonitis occurring in patients after recent T cell deplete allogeneic stem cell transplantation (AlloHSCT). These cases were complicated by an organising pneumonia (during the recovery period) with a predominantly central peribronchial pattern. All patients presented with evidence of active CMV pneumonitis which was treated successfully with anti-viral therapy but was followed by persistent severe dyspnoea, cough and hypoxia. High resolution computed tomography (HRCT) imaging showed widespread central peribronchial consolidation with traction bronchiectasis...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28316330/the-microbiota-of-the-respiratory-tract-gatekeeper-to-respiratory-health
#20
REVIEW
Wing Ho Man, Wouter A A de Steenhuijsen Piters, Debby Bogaert
The respiratory tract is a complex organ system that is responsible for the exchange of oxygen and carbon dioxide. The human respiratory tract spans from the nostrils to the lung alveoli and is inhabited by niche-specific communities of bacteria. The microbiota of the respiratory tract probably acts as a gatekeeper that provides resistance to colonization by respiratory pathogens. The respiratory microbiota might also be involved in the maturation and maintenance of homeostasis of respiratory physiology and immunity...
March 20, 2017: Nature Reviews. Microbiology
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