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https://www.readbyqxmd.com/read/28087881/role-of-stim2-in-cell-function-and-physiopathology
#1
Alejandro Berna-Erro, Isaac Jardin, Gines M Salido, Juan A Rosado
An endoplasmic reticulum (ER)-resident protein that regulates cytosolic and ER free-Ca(2+) concentration by induction of store-operated calcium entry. That is the original definition of STIM2 and its function. While its activity strongly depends on the amount of calcium stored in the ER, its function goes further to intracellular signalling and gene expression. Initially undercovered by the prominent function of STIM1, STIM2 became to be vital in mice, gradually emerging as an important player in the nervous system, and cooperating with STIM1 in the immune system...
January 14, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28081575/what-arthroscopic-skills-need-to-be-trained-before-continuing-safe-training-in-the-operating-room
#2
Gabrielle Tuijthof, Federico Cabitza, Vincenza Ragone, Riccardo Compagnoni, Pietro Randelli
The purpose of this study was to generate consensus among experienced surgeons on "what skills a resident should possess before continuing safe training in the operating room (OR)." An online survey of 65 questions was developed and distributed to surgeons in the European community. A total of 216 responded. The survey included 15 questions regarding generic and specific skills; 16 on patient and tissue manipulation, 11 on knowledge of pathology and 6 on inspection of e-anatomical structures; 5 methods to prepare residents; and 12 on specific skills exercises...
January 12, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28079249/fractal-analysis-of-visual-search-activity-for-mass-detection-during-mammographic-screening
#3
Folami Alamudun, Hong-Jun Yoon, Kathleen B Hudson, Garnetta Morin-Ducote, Tracy Hammond, Georgia D Tourassi
PURPOSE: The objective of this study is to assess the complexity of human visual search activity during mammographic screening using fractal analysis and to investigate its relationship with case and reader characteristics. METHODS: The study was performed for the task of mammographic screening with simultaneous viewing of four coordinated breast views as typically done in clinical practice. Eye-tracking data and diagnostic decisions collected for 100 mammographic cases (25 normal, 25 benign, 50 malignant) and 10 readers (three board certified radiologists and seven radiology residents), formed the corpus data for this study...
January 12, 2017: Medical Physics
https://www.readbyqxmd.com/read/28077646/adenovirus-modulates-toll-like-receptor-4-signaling-by-reprogramming-orp1l-vap-protein-contacts-for-cholesterol-transport-from-endosomes-to-the-endoplasmic-reticulum
#4
Nicholas L Cianciola, Stacey Chung, Danny Manor, Cathleen R Carlin
: Human adenoviruses generally cause mild self-limiting infections but can lead to serious disease and even be fatal in high-risk individuals, underscoring the importance of understanding how the virus counteracts host defense mechanisms. This study had two goals. First, determine the molecular basis of cholesterol homeostatic responses induced by the early region 3 membrane protein RIDα via its direct interaction with the sterol-binding protein ORP1L. Second, determine how this interaction regulates innate immunity to adenovirus...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28077535/the-impact-of-a-perceptual-and-adaptive-learning-module-on-transoesophageal-echocardiography-interpretation-by-anaesthesiology-residents
#5
B T Romito, S Krasne, P J Kellman, A Dhillon
BACKGROUND: The role of transoesophageal echocardiography (TOE) in anaesthetic practice is expanding. We evaluated the effect of a TOE perceptual and adaptive learning module (PALM) on first-yr anaesthesiology residents' performance, in diagnosing cardiac pathology by TOE. METHODS: First-yr residents were assigned to a group (n = 12) that used a TOE PALM or a control group that did not (n = 12). Both groups received a TOE pretest that measured their accuracy and response times...
October 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28076752/methotrexate-associated-primary-hepatic-malignant-lymphoma-following-hepatectomy-a-case-report
#6
Daisuke Takei, Tomoyuki Abe, Hironobu Amano, Naomichi Hirano, Tsuyoshi Kobayashi, Hideki Ohdan, Toshinori Kondo, Masahiro Nakahara, Toshio Noriyuki
INTRODUCTION: Recently, immunosuppressant-associated malignant lymphoma (ML) cases have been increasing along with the development of several effective immunosuppressant drugs for rheumatoid arthritis (RA). Among methotrexate (MTX)-associated lymphoproliferative disorders, primary hepatic lymphoma (PHL) in patients with RA following surgical resection has not been reported previously. PRESENTATION OF CASE: A 65-year-old woman who is a hepatitis B virus carrier with a history of RA was admitted...
December 21, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28073370/expression-site-of-p2ry12-in-residential-microglial-cells-in-astrocytomas-correlates-with-m1-and-m2-marker-expression-and-tumor-grade
#7
Changbin Zhu, Johan M Kros, Marcel van der Weiden, PingPin Zheng, Caroline Cheng, Dana A M Mustafa
The role of resident microglial cells in the pathogenesis and progression of glial tumors is still obscure mainly due to a lack of specific markers. Recently P2RY12, a P2 purinergic receptor, was introduced as a specific marker for microglial cells under normal and pathologic conditions. Here we analyzed the expression of P2RY12 in astrocytomas of various malignancy grades in relation to markers for M1 and M2 macrophage activation profiles by using two web-based glioma datasets and confocal immunohistochemistry to 28 astrocytoma samples grades II-IV...
January 10, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28073290/intra-and-interorgan-communication-in-the-cardiovascular-system-a-special-view-on-redox-regulation
#8
Axel Gödecke, Judith Haendeler
Intraorgan communication in the cardiovascular system is exerted by direct cell-cell contacts, but also by locally released factors, which modulate neighboring cells by paracrine signals (e.g. NO, vascular endothelial growth factor, adenosine, reactive oxygen species (ROS)). Moreover, cells in close proximity to the typical cardiovascular cells such as fibroblasts, red blood cells, as well as resident and invading immune cells must be considered in attempts to understand cardiovascular function in physiology and pathology...
January 10, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28070825/prevalence-and-predictors-of-giardia-in-the-united-states
#9
Haley M Zylberberg, Peter H R Green, Kevin O Turner, Robert M Genta, Benjamin Lebwohl
BACKGROUND: Infection with Giardia lamblia is a common cause of diarrheal disease in the developing and industrialized world. AIMS: We aimed to assess the prevalence of giardiasis in the United States (US) among patients with duodenal biopsies, investigating demographic and clinical factors associated with this condition. METHODS: We conducted a cross-sectional study of patients with duodenal biopsies submitted to a national pathology laboratory between January 2, 2008, and December 31, 2015...
January 9, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28065268/enzymatic-assays-for-studying-intramembrane-proteolysis
#10
D M Bolduc, D J Selkoe, M S Wolfe
Proteolysis within the membrane is catalyzed by a diverse family of proteases immersed within the hydrophobic environment of cellular membranes. These ubiquitous intramembrane-cleaving proteases (I-CLiPs) hydrolyze the transmembrane domains of a large variety of membrane-embedded proteins to facilitate signaling events essential to normal biological functions found in all forms of life. The importance of this unique class of enzyme is highlighted by its central involvement in a variety of human pathologies, including Alzheimer's disease (AD), Parkinson's disease, cancer, and the virulence of a number of viral, bacterial, and fungal pathogens...
2017: Methods in Enzymology
https://www.readbyqxmd.com/read/28052979/prevalence-incidence-and-mortality-of-stroke-in-china-results-from-a-nationwide-population-based-survey-of-480-687-adults
#11
Wenzhi Wang, Bin Jiang, Haixin Sun, Xiaojuan Ru, Dongling Sun, Linhong Wang, Limin Wang, Yong Jiang, Yichong Li, Yilong Wang, Zhenghong Chen, Shengping Wu, Yazhuo Zhang, David Wang, Yongjun Wang, Valery L Feigin
BACKGROUND: -China bears the biggest stroke burden in the world. However, little is known about the current prevalence, incidence, and mortality of stroke at the national level, and the trend in the last 30 years. METHODS: -In 2013 a nationally-representative door-to-door survey was conducted in 155 urban and rural centres in 31 provinces in China, totalling 480,687 adults aged ≥20 years. All stroke survivors were considered as prevalent stroke cases at the prevalent time (August 31, 2013)...
January 4, 2017: Circulation
https://www.readbyqxmd.com/read/28045905/human-leukocytes-kill-brugia-malayi-microfilariae-independently-of-dna-based-extracellular-trap-release
#12
Ciaran J McCoy, Barbara J Reaves, Steeve Giguère, Ruby Coates, Balázs Rada, Adrian J Wolstenholme
BACKGROUND: Wuchereria bancrofti, Brugia malayi and Brugia timori infect over 100 million people worldwide and are the causative agents of lymphatic filariasis. Some parasite carriers are amicrofilaremic whilst others facilitate mosquito-based disease transmission through blood-circulating microfilariae (Mf). Recent findings, obtained largely from animal model systems, suggest that polymorphonuclear leukocytes (PMNs) contribute to parasitic nematode-directed type 2 immune responses. When exposed to certain pathogens PMNs release extracellular traps (NETs) in the form of chromatin loaded with various antimicrobial molecules and proteases...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28034960/elevated-dna-oxidation-and-dna-repair-enzyme-expression-in-brain-white-matter-in-major-depressive-disorder
#13
Attila Szebeni, Katalin Szebeni, Timothy P DiPeri, Luke A Johnson, Craig A Stockmeier, Jessica D Crawford, Michelle J Chandley, Liza J Hernandez, Katherine C Burgess, Russell W Brown, Gregory A Ordway
BACKGROUND: Pathology of white matter in brains of patients with major depressive disorder (MDD) is well-documented, but the cellular and molecular basis of this pathology are poorly understood. METHODS: Levels of DNA oxidation and gene expression of DNA damage repair enzymes were measured in Brodmann area 10 (BA10) and/or amygdala (uncinate fasciculus) white matter tissue from brains of MDD (n=10) and psychiatrically normal control donors (n=13). DNA oxidation was also measured in BA10 white matter of schizophrenia donors (n=10) and in prefrontal cortical white matter from control rats (n=8) and rats with repeated stress-induced anhedonia (n=8)...
December 29, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28027077/rectal-carcinoma-model-a-novel-simulation-in-pathology-training
#14
Ananya Pongpaibul, Prattana Chiravirakul, Piyawadee Leksrisakul, Phadungsak Silakorn, Wangcha Chumtap, Somchai Chongpipatchaipron, Peerasak Jaitrong, Ekachai Jitvichai
INTRODUCTION: Until now, the apprenticeship training model is used to train pathology residents. Pathology residents are trained using patient specimens that are received during the course of normal daily pathology service. However, this training method could result in inconsistency in knowledge and experience among trainees because of variation in specimens that are received for analysis. The use of simulated specimens in pathology residency training could help ensure that all pathology residents receive consistent knowledge and experience...
December 23, 2016: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/28018357/the-role-of-lymphocytes-in-radiotherapy-induced-adverse-late-effects-in-the-lung
#15
REVIEW
Florian Wirsdörfer, Verena Jendrossek
Radiation-induced pneumonitis and fibrosis are dose-limiting side effects of thoracic irradiation. Thoracic irradiation triggers acute and chronic environmental lung changes that are shaped by the damage response of resident cells, by the resulting reaction of the immune system, and by repair processes. Although considerable progress has been made during the last decade in defining involved effector cells and soluble mediators, the network of pathophysiological events and the cellular cross talk linking acute tissue damage to chronic inflammation and fibrosis still require further definition...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/28017213/revised-diagnostic-criteria-for-neurocysticercosis
#16
REVIEW
O H Del Brutto, T E Nash, A C White, V Rajshekhar, P P Wilkins, G Singh, C M Vasquez, P Salgado, R H Gilman, H H Garcia
BACKGROUND: A unified set of criteria for neurocysticercosis (NCC) has helped to standardize its diagnosis in different settings. METHODS: Cysticercosis experts were convened to update current diagnostic criteria for NCC according to two principles: neuroimaging studies are essential for diagnosis, and all other information provides indirect evidence favoring the diagnosis. Recent diagnostic advances were incorporated to this revised set. RESULTS: This revised set is structured in absolute, neuroimaging and clinical/exposure criteria...
January 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28013190/mycobacterium-indicus-pranii-mw-mediated-protection-against-visceral-leishmaniasis-by-reciprocal-regulation-of-host-dual-specificity-phosphatases
#17
Shabina Parveen, Syamdas Bandhyopadhyay, Sonali Das, Suchandra Bhattacharyya Majumdar, Junaid Jibran Jawed, Bidisha Paul Chowdhury, Bhaskar Saha, Subrata Majumdar
Leishmania donovani resides within the host macrophages by dampening host defence mechanisms and thereby it modulates the host cell functions for its survival. Multiple host cell factors compete during the interplay between the host and the parasite. Roles for dual-specificity phosphatases (DUSPs) are implicated in various pathological conditions. However, the reciprocity of these DUSPs was unknown in L. donovani infection in a susceptible model. Here, we show that Mycobacterium indicus pranii (Mw), an immunomodulator, reciprocally regulates DUSP1 and DUSP6 through the TLR4 pathway...
December 2016: International Immunology
https://www.readbyqxmd.com/read/28012830/individual-differences-in-stress-vulnerability-the-role-of-gut-pathobionts-in-stress-induced-colitis
#18
Dominik Langgartner, Daniel Peterlik, Sandra Foertsch, Andrea M Füchsl, Petra Brokmann, Peter J Flor, Zeli Shen, James G Fox, Nicole Uschold-Schmidt, Christopher A Lowry, Stefan O Reber
Chronic subordinate colony housing (CSC), an established mouse model for chronic psychosocial stress, promotes a microbial signature of gut inflammation, characterized by expansion of Proteobacteria, specifically Helicobacter spp., in association with colitis development. However, whether the presence of Helicobacter spp. during CSC is critically required for colitis development is unknown. Notably, during previous CSC studies performed at Regensburg University (University 1), male specific-pathogen-free (SPF) CSC mice lived in continuous subordination to a physically present and Helicobacter spp...
December 21, 2016: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28011382/multiple-sclerosis-therapeutic-applications-of-advancing-drug-delivery-systems
#19
REVIEW
Sanam Dolati, Zohreh Babaloo, Farhad Jadidi-Niaragh, Hormoz Ayromlou, Sanam Sadreddini, Mehdi Yousefi
Multiple sclerosis (MS) is an inflammatory autoimmune disease of the central nervous system, which is accompanying with demyelination, neurodegeneration and sensibility to oxidative stress. In MS, auto-reactive lymphocytes cross the blood-brain barrier (BBB) and reside in the perivenous demyelinating lesions which create various distinct inflammatory demyelinated plaques situated predominantly in the white matter. The current MS-related therapeutic approaches can be classified into disease-modifying therapies (DMTs) and symptomatic therapy...
December 20, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28008089/extracellular-vesicles-their-role-in-cancer-biology-and-epithelial-mesenchymal-transition
#20
REVIEW
Shashi K Gopal, David W Greening, Alin Rai, Maoshan Chen, Rong Xu, Adnan Shafiq, Rommel A Mathias, Hong-Jian Zhu, Richard J Simpson
Cell-cell communication is critical across an assortment of physiological and pathological processes. Extracellular vesicles (EVs) represent an integral facet of intercellular communication largely through the transfer of functional cargo such as proteins, messenger RNAs (mRNAs), microRNA (miRNAs), DNAs and lipids. EVs, especially exosomes and shed microvesicles, represent an important delivery medium in the tumour micro-environment through the reciprocal dissemination of signals between cancer and resident stromal cells to facilitate tumorigenesis and metastasis...
January 1, 2017: Biochemical Journal
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