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https://www.readbyqxmd.com/read/28230606/secretions-of-bifidobacterium-infantis-and-lactobacillus-acidophilus-protect-intestinal-epithelial-barrier-function
#1
Shuangshuang Guo, Tyler Gillingham, Yuming Guo, Di Meng, Weishu Zhu, W Allen Walker, Kriston Ganguli
OBJECTIVES: The secreted metabolites of probiotics are cytoprotective to intestinal epithelium and have been shown to attenuate inflammation and reduce gut permeability. The present study was designed to determine the protective effects of probiotic conditioned media (PCM) from Bifidobacterium infantis (BCM) and Lactobacillus acidophilus (LCM) on interleukin (IL)-1β-induced intestinal barrier compromise. METHODS: The epithelial barrier was determined by measuring the transepithelial electrical resistance (TER) across a Caco-2 cell monolayer using a Transwell model...
March 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28225500/the-prevalence-of-potentially-preventable-deaths-in-an-acute-care-hospital-a-retrospective-cohort
#2
Daniel M Kobewka, Carl van Walraven, Monica Taljaard, Paul Ronksley, Alan J Forster
Studies estimate that 6% to 27% of deaths in hospitals might be prevented with higher quality care. These estimates may be inaccurate because they fail to account for the uncertainty associated with classifying preventability. The purpose of this study was to measure the prevalence of preventable deaths, accounting for the uncertainty in preventability ratings.We created standardized structured case abstracts for all deaths at a multisite academic teaching hospital over a 3-month period. Each case abstract was evaluated independently by 4 reviewers who rated death preventability on a 100-point scale ranging from 0 ("Definitely not preventable") to 100 ("Definitely preventable")...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28223434/spatial-analysis-of-regional-factors-and-lung-cancer-mortality-in-china-1973-2013
#3
Xiaoping Shen, Limin Wang, Li Zhu
BACKGROUND: China's lung cancer crude death rate has increased 6.9-fold from 1973 to 2014. During this time, the country experienced extremely rapid economic growth and social change. It is important to understand the effects of risk factors on Lung Cancer Mortality (LCM) for better allocation of limited resources of cancer prevention and control in China. METHODS: Using three nationwide mortality surveys from 1973 to 2005, Global Health Data Exchange data in 2013, three nationwide smoking surveys from 1984 to 2013, four population censuses from 1964 to 2000, and other datasets, we have compiled datasets and developed spatial random effect models to assess the association of various area level contributing factors on LCM...
February 21, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/28214859/farnesoid-x-receptor-in-mice-prevents-severe-liver-immunopathology-during-lymphocytic-choriomeningitis-virus-infection
#4
Nadine Honke, Namir Shaabani, Cornelia Hardt, Caroline Krings, Dieter Häussinger, Philipp A Lang, Karl S Lang, Verena Keitel
BACKGROUND: Bile acids (BAs) are steroid molecules that are synthesized in the liver. In addition to their important role as a surfactant in solubilizing lipids and promoting the absorption of lipids in the gastrointestinal tract, they act as inflammagens. The role of BAs and their receptor farnesoid X receptor (FXR) during viral infection has not been studied in detail. METHODS: By using FXR-deficient mice, we investigated the role of bile acid receptor FXR during infection with lymphocytic choriomeningitis virus (LCMV)...
January 25, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28213908/a-randomized-controlled-trial-of-lacosamide-versus-sodium-valproate-in-status-epilepticus
#5
Usha K Misra, Deepanshu Dubey, Jayantee Kalita
OBJECTIVE: To compare the efficacy and safety of lacosamide (LCM) and sodium valproate (SVA) in lorazepam (LOR)-resistant status epilepticus (SE). METHODS: Patients with LOR-resistant SE were randomized to intravenous LCM 400 mg at a rate of 60 mg/kg/min or SVA 30 mg/kg at a rate of 100 mg/min. The SE severity score (STESS), duration of SE and its etiology, and magnetic resonance imaging (MRI) findings were noted. Primary outcome was seizure cessation for 1 h, and secondary outcomes were 24 h seizure remission, in hospital death and severe adverse events (SAEs)...
February 18, 2017: Epilepsia
https://www.readbyqxmd.com/read/28207000/spatial-transcriptomic-analysis-of-cryosectioned-tissue-samples-with-geo-seq
#6
Jun Chen, Shengbao Suo, Patrick Pl Tam, Jing-Dong J Han, Guangdun Peng, Naihe Jing
Conventional gene expression studies analyze multiple cells simultaneously or single cells, for which the exact in vivo or in situ position is unknown. Although cellular heterogeneity can be discerned when analyzing single cells, any spatially defined attributes that underpin the heterogeneous nature of the cells cannot be identified. Here, we describe how to use Geo-seq, a method that combines laser capture microdissection (LCM) and single-cell RNA-seq technology. The combination of these two methods enables the elucidation of cellular heterogeneity and spatial variance simultaneously...
March 2017: Nature Protocols
https://www.readbyqxmd.com/read/28199961/proteomic-analysis-of-laser-capture-microdissected-focal-lesions-in-a-rat-model-of-progenitor-marker-positive-hepatocellular-carcinoma
#7
Adeola O Adebayo Michael, Nagib Ahsan, Valerie Zabala, Heather Francois-Vaughan, Stephanie Post, Kate E Brilliant, Arthur R Salomon, Jennifer A Sanders, Philip A Gruppuso
We have shown previously that rapamycin, the canonical inhibitor of the mechanistic target of rapamycin (mTOR) complex 1, markedly inhibits the growth of focal lesions in the resistant hepatocyte (Solt-Farber) model of hepatocellular carcinoma (HCC) in the rat. In the present study, we characterized the proteome of persistent, pre-neoplastic focal lesions in this model. One group was administered rapamycin by subcutaneous pellet for 3 weeks following partial hepatectomy and euthanized 4 weeks after the cessation of rapamycin...
February 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28196296/age-related-reduction-of-dermal-fibroblast-size-up-regulates-multiple-matrix-metalloproteinases-as-observed-in-aged-human-skin-in-vivo
#8
Z Qin, R M Balimunkwe, T Quan
BACKGROUND: Fragmentation of collagen fibrils, the major structure protein in skin, is a hallmark of dermal aging. Matrix metalloproteinases (MMPs) are largely responsible for fragmentation of collagen fibrils. However, the alteration of all known mammalian MMPs and the mechanism underlying altered expression of MMPs in chronologically aged human skin are less understood. OBJECTIVES: To quantify gene expression of all 23 known mammalian MMPs in sun-protected young and aged human skin in vivo, and investigate the potential mechanism underlying age-related alteration of multiple MMPs...
February 14, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28179496/cutting-edge-chromatin-accessibility-programs-cd8-t-cell-memory
#9
Christopher D Scharer, Alexander P R Bally, Bhanu Gandham, Jeremy M Boss
CD8 T cell memory is characterized by rapid recall of effector function, increased proliferation, and reduced activation requirements. Despite the extensive functional characterization, the molecular mechanisms that facilitate these enhanced properties are not well characterized. In this study, the assay for transposase-accessible chromatin sequencing was employed to map the cis-regulatory elements in CD8 T cells responding to acute and chronic lymphocytic choriomeningitis virus infections. Integration of chromatin accessibility profiles with gene expression data identified unique regulatory modules that were enriched for distinct combinations of transcription factor-binding motifs...
February 8, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28169274/armc5-deletion-causes-developmental-defects-and-compromises-t-cell-immune-responses
#10
Yan Hu, Linjiang Lao, Jianning Mao, Wei Jin, Hongyu Luo, Tania Charpentier, Shijie Qi, Junzheng Peng, Bing Hu, Mieczyslaw Martin Marcinkiewicz, Alain Lamarre, Jiangping Wu
Armadillo repeat containing 5 (ARMC5) is a cytosolic protein with no enzymatic activities. Little is known about its function and mechanisms of action, except that gene mutations are associated with risks of primary macronodular adrenal gland hyperplasia. Here we map Armc5 expression by in situ hybridization, and generate Armc5 knockout mice, which are small in body size. Armc5 knockout mice have compromised T-cell proliferation and differentiation into Th1 and Th17 cells, increased T-cell apoptosis, reduced severity of experimental autoimmune encephalitis, and defective immune responses to lymphocytic choriomeningitis virus infection...
February 7, 2017: Nature Communications
https://www.readbyqxmd.com/read/28138434/concurrent-lateral-condyle-mass-fracture-with-olecranon-fracture-a-case-report-and-brief-review-of-literature
#11
Munir Farooq, Younis Kamal, Hayat Ahmad Khan, Naseemul Gani, Adil Bashir Shah, Mohammed Ashraf Khan, Shahid Bhat
INTRODUCTION: There is very limited literature describing the association of lateral condyle mass (LCM) fracture of the distal humerus associated concurrently with olecranon fracture. Herein, a case is reported of a displaced LCM fracture with displaced olecranon fracture, due to complex trauma while getting out of a vehicle, which was managed by open reduction and internal fixation. CASE PRESENTATION: A 4.5- year- old boy suffered severe pain and swelling around his right elbow due to trauma which he suffered while trying to get out of a vehicle which was in motion...
September 2016: Archives of Trauma Research
https://www.readbyqxmd.com/read/28114658/a-woman-in-her-60s-with-chronic-meningitis
#12
Michael R Pichler, Joseph E Parisi, James P Klaas
A renal transplant recipient in her 60s presented with a history of chronic headaches and progressive encephalopathy. Serial cerebrospinal fluid examinations were consistent with chronic lymphocytic meningitis, but no definitive cause was identified. Imaging studies showed the development of an enhancing suprasellar mass lesion and hydrocephalus. Symptoms progressed despite empiric antimicrobial therapy, and the patient died after an acute large-volume subarachnoid hemorrhage. A complete autopsy was performed...
January 23, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28110285/validation-of-a-clinical-screening-instrument-for-tumour-predisposition-syndromes-in-patients-with-childhood-cancer-tups-protocol-for-a-prospective-observational-multicentre-study
#13
Floor A M Postema, Saskia M J Hopman, Corianne A J M de Borgie, Peter Hammond, Raoul C Hennekam, Johannes H M Merks, Cora M Aalfs, Jakob K Anninga, Lieke Pv Berger, Fonnet E Bleeker, Eveline Sjm de Bont, Corianne Ajm de Borgie, Charlotte J Dommering, Natasha Ka van Eijkelenburg, Peter Hammond, Raoul C Hennekam, Marry M van den Heuvel-Eibrink, Saskia Mj Hopman, Marjolijn Cj Jongmans, Wijnanda A Kors, Tom Gw Letteboer, Jan Lcm Loeffen, Johannes Hm Merks, Maran Jw Olderode-Berends, Floor Am Postema, Anja Wagner
INTRODUCTION: Recognising a tumour predisposition syndrome (TPS) in patients with childhood cancer is of significant clinical relevance, as it affects treatment, prognosis and facilitates genetic counselling. Previous studies revealed that only half of the known TPSs are recognised during standard paediatric cancer care. In current medical practice it is impossible to refer every patient with childhood cancer to a clinical geneticist, due to limited capacity for routine genetic consultation...
January 20, 2017: BMJ Open
https://www.readbyqxmd.com/read/28093272/a-method-for-obtaining-simian-immunodeficiency-virus-rna-sequences-from-laser-capture-microdissected-and-immune-captured-cd68-and-cd163-macrophages-from-frozen-tissue-sections-of-bone-marrow-and-brain
#14
Jaclyn Mallard, Emily Papazian, Caroline Soulas, David J Nolan, Marco Salemi, Kenneth C Williams
Laser capture microdissection (LCM) is used to extract cells or tissue regions for analysis of RNA, DNA or protein. Several methods of LCM are established for different applications, but a protocol for consistently obtaining lentiviral RNA from LCM captured immune cell populations is not described. Obtaining optimal viral RNA for analysis of viral genes from immune-captured cells using immunohistochemistry (IHC) and LCM is challenging. IHC protocols have long antibody incubation times that increase risk of RNA degradation...
March 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28066594/cough-frequency-monitors-can-they-discriminate-patient-from-environmental-coughs
#15
Stefan T Kulnik, Natalie M Williams, Lalit Kalra, John Moxham, Surinder S Birring
BACKGROUND: Objective cough frequency measurements are increasingly applied in clinical research. Technological advances enable automated detection and counting of cough events from sound recordings of many hours' duration. A possible limitation of sound-based cough frequency measurement is the contamination of recordings by environmental coughs (coughs from persons other than the patient). This study aimed to investigate the accuracy of a sound-based cough monitor for detecting and discriminating patient cough from environmental cough...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28058690/functions-of-chromophore-containing-domain-in-the-large-linker-lcm-polypeptide-of-phycobilisome
#16
I V Elanskaya, I A Kononova, E P Lukashev, Y V Bolychevtseva, M F Yanushin, I N Stadnichuk
In the large linker ArcE polypeptide of the phycobilisome (PBS) from the cyanobacterium Synechocystis sp. PCC 6803, the chromophore-containing 26-kDa domain was deleted with consequent disturbance of the main PBS functions. Phycobilisomes in mutant cells staying in contact with photosystem I cannot transfer energy to the photosystem II. Under the bright light conditions, the interaction of PBSs with the photoprotective orange carotenoid protein in the mutant was lost and the implementation of transition states 1 and 2 of the pigment apparatus was significantly reduced...
November 2016: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28057717/pathology-driven-comprehensive-proteomic-profiling-of-the-prostate-cancer-tumour-microenvironment
#17
Lisa Staunton, Claire Tonry, Rosina Lis, Virginia Espina, Lance Liotta, Rosanna Inziatari, Michaela Bowden, Aurelie Fabre, John O'Leary, Stephen P Finn, Massimo Loda, Stephen R Pennington
: Prostate cancer (PCa) is the second most common cancer in men worldwide. Gleason grading is an important predictor of PCa outcomes and is influential in determining patient treatment options. Clinical decisions based on a Gleason score of 7 are difficult as the prognosis for individuals diagnosed with Gleason 4+3 cancer is much worse than for those diagnosed with Gleason 3+4 cancer. Laser capture microdissection (LCM) is a highly precise method to isolate specific cell populations or discrete microregions from tissues...
January 5, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28029219/defining-the-tipping-point-in-surgical-performance-for-laparoscopic-donor-nephrectomy-among-transplant-surgery-fellows-a-risk-adjusted-cumulative-summation-learning-curve-analysis
#18
O K Serrano, A S Bangdiwala, D M Vock, D Berglund, T B Dunn, E B Finger, T L Pruett, A J Matas, R Kandaswamy
The United Network for Organ Sharing recommends that fellowship-trained surgeons participate in 15 laparoscopic donor nephrectomy (LDN) procedures to be considered proficient. The American Society of Transplant Surgeons (ASTS) mandates 12 LDNs during an abdominal transplant surgery fellowship. We performed a retrospective intraoperative case analysis to create a risk-adjusted cumulative summation (RACUSUM) model to assess the learning curve of novice transplant surgery fellows (TSFs). Between January 2000 and December 2014, 30 novice TSFs participated in the organ procurement rotation of our ASTS-approved abdominal transplant surgery fellowship...
December 28, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/28029204/translating-thermal-response-of-triblock-copolymer-assemblies-in-dilute-solution-to-macroscopic-gelation-and-phase-separation
#19
Zhe Sun, Ye Tian, Wendy L Hom, Oleg Gang, Surita R Bhatia, Robert B Grubbs
The thermal response of semi-dilute solutions (5 w/w%) of two amphiphilic thermoresponsive poly(ethylene oxide)-b-poly(N,N-diethylacrylamide)-b-poly(N,N-dibutylacrylamide) (PEO45 -PDEAmx -PDBAm12 ) triblock copolymers, which differ only in the size of the central responsive block, in water was examined. Aqueous PEO45 -PDEAm41 -PDBAm12 solutions, which undergo a thermally induced sphere-to-worm transition in dilute solution, were found to reversibly form soft (G'≈10 Pa) free-standing physical gels after 10 min at 55 °C...
December 28, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/28027905/notochord-isolation-using-laser-capture-microdissection
#20
R G C Santegoeds, Y Yakkioui, A Jahanshahi, G Raven, J J Van Overbeeke, A Herrler, Y Temel
BACKGROUND: Chordoma are malignant tumors of the axial skeleton, which arise from remnants of the notochord. The Notochord (chorda dorsalis) is an essential embryonic structure involved in the development of the nervous system and axial skeleton. Therefore, the notochord seems to be the most biologically relevant control tissue to study chordoma in molecular biology research. Nevertheless, up to now mainly different tissues but not the notochord have been used as control for chordoma, due to difficulty of isolating notochordal tissue...
March 2017: Journal of Chemical Neuroanatomy
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