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https://www.readbyqxmd.com/read/29144435/dysregulated-collagen-homeostasis-by-matrix-stiffening-and-tgf-%C3%AE-1-in-fibroblasts-from-idiopathic-pulmonary-fibrosis-patients-role-of-fak-akt
#1
Alícia Giménez, Paula Duch, Marta Puig, Marta Gabasa, Antoni Xaubet, Jordi Alcaraz
Idiopathic pulmonary fibrosis (IPF) is an aggressive disease in which normal lung parenchyma is replaced by a stiff dysfunctional scar rich in activated fibroblasts and collagen-I. We examined how the mechanochemical pro-fibrotic microenvironment provided by matrix stiffening and TGF-β1 cooperates in the transcriptional control of collagen homeostasis in normal and fibrotic conditions. For this purpose we cultured fibroblasts from IPF patients or control donors on hydrogels with tunable elasticity, including 3D collagen-I gels and 2D polyacrylamide (PAA) gels...
November 16, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29120819/towards-a-defined-ecm-and-small-molecule-based-monolayer-culture-system-for-the-expansion-of-mouse-and-human-intestinal-stem-cells
#2
Zhixiang Tong, Keir Martyn, Andy Yang, Xiaolei Yin, Benjamin E Mead, Nitin Joshi, Nicholas E Sherman, Robert S Langer, Jeffrey M Karp
Current ISC culture systems face significant challenges such as animal-derived or undefined matrix compositions, batch-to-batch variability (e.g. Matrigel-based organoid culture), and complexity of assaying cell aggregates such as organoids which renders the research and clinical translation of ISCs challenging. Here, through screening for suitable ECM components, we report a defined, collagen based monolayer culture system that supports the growth of mouse and human intestinal epithelial cells (IECs) enriched for an Lgr5(+) population comparable or higher to the levels found in a standard Matrigel-based organoid culture...
October 26, 2017: Biomaterials
https://www.readbyqxmd.com/read/29114411/clinical-comparison-of-i-gel-supraglottic-airway-device-and-cuffed-endotracheal-tube-for-pressure-controlled-ventilation-during-routine-surgical-procedures
#3
Ankur Dhanda, Shalendra Singh, Anju R Bhalotra, Siddharth Chavali
Objective: Recently, there has been a trend favouring the use of supraglottic airway devices over endotracheal tubes (ETT) during short surgical procedures. In this study, we are going to assess the suitability of one such supraglottic airway device, i-gel, for pressure-controlled ventilation (PCV) during routine surgical procedures. Methods: The airway management for 60 patients was done with either i-gel (Group I) or cuffed tracheal tube (Group E) for this prospective, randomised, double-blinded study...
October 2017: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/29084373/residual-sodium-dodecyl-sulfate-in-decellularized-muscle-matrices-leads-to-fibroblast-activation-in-vitro-and-foreign-body-response-in-vivo
#4
Emily E Friedrich, Steven T Lanier, Soleil Niknam-Bienia, Gabriel A Arenas, Divya Rajendran, Jason A Wertheim, Robert D Galiano
Detergents such as sodium dodecyl sulfate (SDS) are commonly used to extract cells from tissues in a process called 'decellularization'. Residual SDS is difficult to completely remove and may lead to an undesirable host response toward an implanted biomaterial. In this study, we developed a modification for SDS cell extraction from muscle equally efficient to previous methods but leading to significantly less residual SDS remnants in the matrices. Muscle-derived matrices were prepared via two SDS-based decellularization methods, which led to removal of either 81...
October 30, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29066653/use-of-i-gel-for-laser-ablation-of-a-bronchial-lesion
#5
Rakesh Garg, Sakshi Thakore, Karan Madan, Anant Mohan
The use of laser for airway lesions requires airway management. Usual options include special laser-resistant endotracheal tubes. The use of supraglottic devices have been described in the literature. Laryngeal mask airway carries the risk of cuff damage during the use of laser. i-gel is made of thermoplastic material and does not require air inflation and thus potentially reduce the risk of cuff rupture. i-gel use in laser surgeries has not been described in the literature. We present successful airway management in laser surgery for bronchial tumour using i-gel...
October 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29033717/comparison-of-oropharyngeal-leak-pressure-of-air-q%C3%A2-i-gel%C3%A2-and-laryngeal-mask-airway-supreme%C3%A2-in-adult-patients-during-general-anesthesia-a-randomized-controlled-trial
#6
Srinath Damodaran, Sameer Sethi, Surender Kumar Malhotra, Tanvir Samra, Souvik Maitra, Vikas Saini
STUDY OBJECTIVE: Various randomized controlled trials and a meta-analysis have compared i-gel™ and laryngeal mask airway Supreme™ (LMA-S™) in adult patients and found that both the devices provided equivalent oropharyngeal leak pressure (OLP). However, no randomized controlled trial has compared air-Q™ with i-gel™ and LMA-S™ in adult patient. Hence, we designed this study to compare air-Q™ with LMA-S™ and i-gel™ in adult patients. MATERIALS AND METHODS: A total of 75 adult patients of the American Society of Anesthesiologists physical status I/II of both sexes, between 18 and 60 years, were included in this prospective randomized controlled trial conducted in a tertiary care center...
October 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28928564/comparison-of-i-gel%C3%A2-and-laryngeal-mask-airway-supreme%C3%A2-in-different-head-and-neck-positions-in-spontaneously-breathing-pediatric-population
#7
Swati Gupta, Neelam Dogra, Kanchan Chauhan
BACKGROUND: Although the advantages of ventilation with i-gel™ and laryngeal mask airway Supreme (LMA-Supreme™) has been well documented, they are still under debate for surgeries requiring flexion and extension of neck such as thyroid surgery, tonsillectomy, and neck exploration. Hence, we conducted a study to demonstrate the effect of neck flexion and extension in spontaneously breathing anesthetized pediatric patients utilizing i-gel™ and LMA-Supreme™. METHODS: A prospective, randomized comparative study was conducted on sixty children, thirty each in i-gel™ and LMA-Supreme™ group...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28920047/the-effects-of-endotracheal-tube-and-i-gel%C3%A2-supraglottic-airway-device-on-respiratory-impedance-a-prospective-observational-study
#8
Shoko Nakano, Junko Nakahira, Yosuke Kuzukawa, Toshiyuki Sawai, Toshiaki Minami
BACKGROUND: The forced oscillation technique (FOT) is a non-invasive means of measuring respiratory resistance and reactance. We tested our hypothesis that endotracheal intubation would cause more substantial preoperative increases in FOT parameters than a supraglottic airway device (SGD). METHODS: Forty patients requiring general anesthesia and mechanical ventilation for transurethral bladder tumor resection underwent spirometry the day before surgery. Forced oscillation was measured using a MostGraph-01 device the day before surgery and immediately after removal of the airway adjunct...
February 2017: Anesthesiology and Pain Medicine
https://www.readbyqxmd.com/read/28912163/neonatal-resuscitation-using-a-laryngeal-mask-airway-a-randomised-trial-in-uganda
#9
Nicolas J Pejovic, Daniele Trevisanuto, Clare Lubulwa, Susanna Myrnerts Höök, Francesco Cavallin, Josaphat Byamugisha, Jolly Nankunda, Thorkild Tylleskär
OBJECTIVE: Mortality rates from birth asphyxia in low-income countries remain high. Face mask ventilation (FMV) performed by midwives is the usual method of resuscitating neonates in such settings but may not always be effective. The i-gel is a cuffless laryngeal mask airway (LMA) that could enhance neonatal resuscitation performance. We aimed to compare LMA and face mask (FM) during neonatal resuscitation in a low-resource setting. SETTING: Mulago National Referral Hospital, Kampala, Uganda...
September 14, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28874304/effect-of-cricoid-pressure-on-the-insertion-efficacy-of-six-supraglottic-devices-a-crossover-randomized-simulation-trial
#10
Fumihiro Ohchi, Nobuyasu Komasawa, Ryosuke Mihara, Kazuo Hattori, Toshiaki Minami
BACKGROUND: No study has ever compared the efficacy of various types of supraglottic devices (SGDs) for securing the airway under cricoid pressure. OBJECTIVE: This study aimed to evaluate the efficacy of six SGDs, LMA-ProSeal (ProSeal), LMA-Classic (Classic), Laryngeal Tube (LT), LMA-Supreme (Supreme), air-Q (air-Q), and i-gel (i-gel), in airway management under cricoid pressure using a manikin. METHODS: Fifteen novice doctors and 16 experienced doctors used the six SGDs under cricoid or sham pressure on an adult manikin...
November 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28857785/comparison-of-the-laryngeal-mask-airway-supreme-and-the-i-gel-in-paralysed-elderly-patients-a-randomised-controlled-trial
#11
Myoung H Kim, Jae H Lee, Yong S Choi, Sujung Park, Seokyung Shin
BACKGROUND: The laryngeal mask airway supreme (LMA-S) and i-gel are both popular second-generation supraglottic airway devices that have been widely studied in surgical patients, but their differences in clinical performance in the elderly are not clear. OBJECTIVE: We compared the efficacy and safety of the LMA-S and i-gel in anaesthetised and paralysed elderly patients. DESIGN: A prospective, randomised and parallel study. SETTING: Single-centre trial, study period January 2014 from to October 2016...
August 28, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28802606/comparison-of-lma-supreme%C3%A2-with-i-gel%C3%A2-and-lma-proseal%C3%A2-in-children-for-airway-management-during-general-anaesthesia-a-meta-analysis-of-randomized-controlled-trials
#12
Sulagna Bhattacharjee, Anirban Som, Souvik Maitra
STUDY OBJECTIVE: A few randomized trials have compared LMA Supreme™ with LMA ProSeal™ and i-gel™ in children but their conclusions varied widely. This systematic review and meta analysis has compared the former device with the latter two devices. DESIGN: Meta-analysis and systematic review using the Mantel-Haenszel method and pooled mean difference using inverse variance method. SETTING: Meta-analysis of published prospective randomized controlled trials...
September 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28802261/how-do-different-brands-of-size-1-laryngeal-mask-airway-compare-with-face-mask-ventilation-in-a-dedicated-laryngeal-mask-airway-teaching-manikin
#13
Mark Brian Tracy, Archana Priyadarshi, Dimple Goel, Krista Lowe, Jacqueline Huvanandana, Murray Hinder
BACKGROUND: International neonatal resuscitation guidelines recommend the use of laryngeal mask airway (LMA) with newborn infants (≥34 weeks' gestation or >2 kg weight) when bag-mask ventilation (BMV) or tracheal intubation is unsuccessful. Previous publications do not allow broad LMA device comparison. OBJECTIVE: To compare delivered ventilation of seven brands of size 1 LMA devices with two brands of face mask using self-inflating bag (SIB). DESIGN: 40 experienced neonatal staff provided inflation cycles using SIB with positive end expiratory pressure (PEEP) (5 cmH2O) to a specialised newborn/infant training manikin randomised for each LMA and face mask...
August 11, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28737223/a-network-meta-analysis-of-the-clinical-properties-of-various-types-of-supraglottic-airway-device-in-children
#14
REVIEW
T Mihara, A Asakura, G Owada, A Yokoi, K Ka, T Goto
We conducted both conventional pairwise and Bayesian network meta-analyses to compare the clinical properties of supraglottic airway devices in children. We searched six databases for randomised clinical trials. Our primary end-points were oropharyngeal leak pressure, risk of insertion failure at first attempt, and blood staining risk. The risk of device failure, defined as the abandonment of the supraglottic airway device and replacement with a tracheal tube or another device, was also analysed. Sixty-five randomised clinical trials with 5823 participants were identified, involving 16 types of supraglottic airway device...
July 24, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28686017/analysis-and-characterization-of-polychlorinated-hydroxybornanes-as-metabolites-of-toxaphene-using-a-polar-bear-model
#15
Lea Reger, Christoph Gallistl, Karl Skírnisson, Walter Vetter
Abiotic and biotic transformation of toxaphene (camphechlor) results in the selective enrichment of recalcitrant congeners while other, less persistent compounds of technical toxaphene (CTTs) are degraded. Until now, there has been little knowledge on oxidation transformation of toxaphene. For instance, the existence of hydroxylated CTTs (OH-CTTs) in authentic environmental and food samples has not been proven. For this reason, we synthesized a mixture consisting of tetra- to heptachlorinated OH-CTTs and simplified it by countercurrent chromatography (CCC)...
July 21, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28672891/osteogenic-potency-of-dedifferentiated-fat-cells-isolated-from-elderly-people-with-osteoporosis
#16
Wei Hao, Chuanqiang Jiang, Ming Jiang, Tian Wang, Xin Wang
Mature adipocytes are the major cell type in adipose tissue. This study aimed to explore the osteogenic potency of dedifferentiated fat cells obtained from osteoporotic patients (opDFATs) in vitro and in vivo. Mature adipocytes and adipose-derived stem cells (opASCs) were harvested from subcutaneous adipose tissue. Mature adipocytes were dedifferentiated to produce opDFATs by the ceiling culture method. OpDFATs were osteogenically induced in vitro with opASCs as a control. Cell growth, alkaline phosphatase (ALPase) activity and cell mineralization were determined, and expression levels of osteogenesis-specific genes (collagen I, osteocalcin and bone sialoprotein) were analyzed using quantitative reverse transcription polymerase chain reaction...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28658119/is-neuromuscular-blocker-needed-in-children-undergoing-inguinal-herniorrhaphy-a-prospective-randomized-and-controlled-trial
#17
RANDOMIZED CONTROLLED TRIAL
Bon-Wook Koo, Kyu-Whan Jung, Ah-Young Oh, Eun-Young Kim, Hyo-Seok Na, Eun-Su Choi, Kwang-Suk Seo
BACKGROUND: Intraoperative neuromuscular blocker is widely used, but is known to be associated with postoperative residual paralysis, which is known to be associated with increased risk of pulmonary complications. Hence, its use should be individualized and restricted to procedures where it is mandatory. We examined whether not using a neuromuscular blocker affects the surgical conditions in children undergoing inguinal herniorrhaphy. METHODS: Anesthesia was induced and maintained with sevoflurane in 60% nitrous oxide, and the airway was maintained using an I-gel...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28634939/an-organotypic-3d-assay-for-primary-human-mammary-epithelial-cells-that-recapitulates-branching-morphogenesis
#18
Jelena R Linnemann, Lisa K Meixner, Haruko Miura, Christina H Scheel
We have developed a three-dimensional organotypic culture system for primary human mammary epithelial cells (HMECs) in which the cells are cultured in free floating collagen type I gels. In this assay, luminal cells predominantly form multicellular spheres, while basal/myoepithelial cells form complex branched structures resembling terminal ductal lobular units (TDLUs), the functional units of the human mammary gland in situ. The TDLU-like organoids can be cultured for at least 3 weeks and can then be passaged multiple times...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28625432/the-lma-supreme-is-it-a-suitable-alternative-to-the-i-gel-and-lma-proseal-for-airway-maintenance-in-children
#19
EDITORIAL
Narasimhan Jagannathan, Jahn Hajduk
No abstract text is available yet for this article.
August 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28580492/effect-of-concentration-of-collagen-gel-on-functional-activity-of-bone-marrow-mesenchymal-stromal-cells
#20
Yu A Nashchekina, N M Yudintceva, P O Nikonov, E A Ivanova, L V Smagina, I V Voronkina
Collagen I gels with protein concentrations of 1, 2, and 3.5 mg/ml were prepared and embedded in a porous polylactide scaffold to reduce their contraction. Concentration of the gel did not affect its degradation. Collagen gels promoted the formation of cell networks. The cells in the collagen gel with a concentration of 1 mg/ml embedded in polylactide scaffold had elongated spindle-like shape, in contrast to flattened cells in collagen gel of the same concentration not embedded in the scaffold. Stabilization of the collagen gel in the polylactide scaffold promoted active synthesis of laminin and fibronectin by cells as soon as on day 5 of culturing in comparison with that in free collagen substrate...
June 3, 2017: Bulletin of Experimental Biology and Medicine
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