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https://www.readbyqxmd.com/read/28346966/factor-xii-contact-activation
#1
Clément Naudin, Elena Burillo, Stefan Blankenberg, Lynn Butler, Thomas Renné
Contact activation is the surface-induced conversion of factor XII (FXII) zymogen to the serine protease FXIIa. Blood-circulating FXII binds to negatively charged surfaces and this contact to surfaces triggers a conformational change in the zymogen inducing autoactivation. Several surfaces that have the capacity for initiating FXII contact activation have been identified, including misfolded protein aggregates, collagen, nucleic acids, and platelet and microbial polyphosphate. Activated FXII initiates the proinflammatory kallikrein-kinin system and the intrinsic coagulation pathway, leading to formation of bradykinin and thrombin, respectively...
March 27, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28344920/six-years-of-instand-e-%C3%A2-v-sige-proficiency-testing-an-evaluation-of-in-vitro-allergy-diagnostics
#2
N Wojtalewicz, S Goseberg, K Kabrodt, I Schellenberg
BACKGROUND: Even though allergies are an important health issue, wide manufacturer-dependent differences in the detected amounts of allergen-specific IgE (sIgE) have repeatedly been found. These discrepancies hinder diagnostics and research into clinically significant cutoff points for life-threatening symptoms. METHODS: To evaluate whether the reported differences have led to changes in diagnostic testing, we analyzed data from six years of round robin testing (RRT, also known as proficiency testing) at the Gesellschaft zur Förderung der Qualitätssicherung in medizinischen Laboratorien e...
2017: Allergo Journal International
https://www.readbyqxmd.com/read/28343162/mesothelin-promoter-variants-are-associated-with-increased-soluble-mesothelin-related-peptide-levels-in-asbestos-exposed-individuals
#3
Chiara De Santi, Perla Pucci, Alessandra Bonotti, Ombretta Melaiu, Monica Cipollini, Roberto Silvestri, Veronika Vymetalkova, Elisa Barone, Elisa Paolicchi, Alda Corrado, Irene Lepori, Irene Dell'Anno, Lucia Pellè, Pavel Vodicka, Luciano Mutti, Rudy Foddis, Alfonso Cristaudo, Federica Gemignani, Stefano Landi
BACKGROUND: Soluble mesothelin-related peptide (SMRP) is a promising diagnostic biomarker for malignant pleural mesothelioma (MPM), but various confounders hinder its usefulness in surveillance programmes. We previously showed that a single nucleotide polymorphism (SNP) within the 3'untranslated region (3'UTR) of the mesothelin (MSLN) gene could affect the levels of SMRP. OBJECTIVES: To focus on SNPs located within MSLN promoter as possible critical genetic variables in determining SMRP levels...
March 25, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28342334/oncogene-addiction-in-non-small-cell-lung-cancer-focus-on-ros1-inhibition
#4
REVIEW
Francesco Facchinetti, Giulio Rossi, Emilio Bria, Jean-Charles Soria, Benjamin Besse, Roberta Minari, Luc Friboulet, Marcello Tiseo
Detection of molecular aberrations driving the biology and the clinical behavior of advanced non-small cell lung cancer (NSCLC) allows the adoption of specific therapeutic strategies dramatically impacting disease courses. Among these, ROS1 rearrangements are present in 1-2% of lung adenocarcinomas. Thanks to similarities between ALK and ROS1 oncogenes, lessons inferred from ALK can be applied to ROS1-positive NSCLC; nevertheless, disparities exist between diseases mastered by these two fusion genes. In the absence of more common genetic alterations detected in NSCLC (e...
March 12, 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28341748/drug-induced-liver-injury-recent-advances-in-diagnosis-and-risk-assessment
#5
REVIEW
Gerd A Kullak-Ublick, Raul J Andrade, Michael Merz, Peter End, Andreas Benesic, Alexander L Gerbes, Guruprasad P Aithal
Idiosyncratic drug-induced liver injury (IDILI) is a rare but potentially severe adverse drug reaction that should be considered in patients who develop laboratory criteria for liver injury secondary to the administration of a potentially hepatotoxic drug. Although currently used liver parameters are sensitive in detecting DILI, they are neither specific nor able to predict the patient's subsequent clinical course. Genetic risk assessment is useful mainly due to its high negative predictive value, with several human leucocyte antigen alleles being associated with DILI...
March 23, 2017: Gut
https://www.readbyqxmd.com/read/28341528/molecular-diagnosis-of-allergy-to-anisakis-simplex-and-gymnorhynchus-gigas-fish-parasites
#6
A Armentia, J Santos, Z Serrano, B Martín, S Martín, J Barrio, S Fernández, M González-Sagrado, F Pineda, R Palacios
BACKGROUND: There has been an increase in the prevalence of hypersensitivity to Anisakis simplex. There are fish parasites other than Anisakis simplex whose allergenicity has not yet been studied. OBJECTIVE: To assess IgE hypersensitivity caused by fish parasite allergens in patients with gastro-allergic symptoms after consumption of fish, shellfish or cephalopods, compared with healthy subjects, pollen allergic individuals and children with digestive symptoms after eating marine food...
March 21, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28338293/long-non-coding-rna-00312-regulated-by-hoxa5-inhibits-tumour-proliferation-and-promotes-apoptosis-in-non-small-cell-lung-cancer
#7
Qingqing Zhu, Tangfeng Lv, Ying Wu, Xuefei Shi, Hongbing Liu, Yong Song
Non-small cell lung cancer (NSCLC) is the most prevalent type of lung cancer. The abnormal expression of many long non-coding RNAs (lncRNAs) has been reported involved in the progression of various tumours, which can be used as diagnostic indicators or antitumour targets. Here, we found that the long non-coding RNA 00312 was down-regulated in paired NSCLC tissues and correlated with poor clinical outcome; decreased linc00312 expression in NSCLC was associated with larger and later stage tumours. Functional experiments showed that linc00312 could inhibit cell proliferation and promote apoptosis in vitro and in vivo...
March 24, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28338032/reliability-of-cbct-diagnosing-root-fractures-remains-uncertain
#8
Niloufar Amintavakoli, Silvia Spivakovsky
Data sourcesPubMed, Web of Science, Science Direct, Cochrane library, Embase, SCOPUS, CNKI and Wanfang databases were searched until April 2014 followed by hand searching of relevant references.Study selectionUsing no language restrictions two authors independently assessed for inclusion of in vivo and in vitro studies involving at least ten teeth on the use of CBCT for diagnosing complete root fractures on non-endodontically treated teeth.Data extraction and synthesisTwo authors independently assessed for inclusion and performed quality assessment using QUADAS-2 (quality assessment of studies of diagnostic accuracy-2)...
March 2017: Evidence-based Dentistry
https://www.readbyqxmd.com/read/28337295/rna-helicase-dhx9-may-be-a-therapeutic-target-in-lung-cancer-and-inhibited-by-enoxacin
#9
Shiguang Cao, Ruiying Sun, Wei Wang, Xia Meng, Yuping Zhang, Na Zhang, Shuanying Yang
RNA helicase DHX9 is a member of human RNA enzymes. Previous studies have reported that DHX9 is highly expressed in various types of malignant tumor. However, its role in the progression of lung cancer remains to be fully clarified. The present study aims to investigate the oncogenic role of DHX9 in serum, tissues and lung cancer cell lines in vitro. We used RNA interference to downregulate DHX9 expression in A549 cells using a small interfering RNA lentiviral vector. Subsequently, enoxacin was used to inhibit cell proliferation, and this effect was detected using MTT...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28334688/preparation-of-poly-n-isopropylacrylamide-block-acrylic-acid-encapsulated-proteinaceous-microbubbles-for-delivery-of-doxorubicin
#10
Xiaochen Ma, Qingxia Liu
Inspired by theranostic technologies, we electrostatically loaded proteinaceous microbubbles (MBs) with a model drug, doxorubicin (Dox) to couple their utilizations in diagnostic imaging with drug loading. A temperature-sensitive polymer, poly(N-isopropylacrylamide-block-acrylic acid) (poly(NIPAM-b-AAc)) was used to encapsulate the Dox-loaded MBs to prevent premature release and to control the Dox release thermally. An LCST of 39°C, slightly higher than normal body temperatures, enables the release of Dox through a conformational change of the polymer shell upon moderate heating...
March 12, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28332260/biological-characterization-of-novel-nitroimidazole-peptide-conjugates-in-vitro-and-in-vivo
#11
Ralf Bergmann, Katrin Splith, Jens Pietzsch, Michael Bachmann, Ines Neundorf
Recently, we reported on the design of a multimodal peptide conjugate useful as delivery platform for targeting hypoxic cells. A nitroimidazole (2-(2-nitroimidazol-1-yl)acetic acid, NIA) moiety, which is selectively entrapped in hypoxic cells, was coupled to a cell-penetrating peptide serving as the transporter. Furthermore, attachment of a bifunctional linker allowed the introduction of a diagnostic or therapeutic radiometal. However, although selective tumor accumulation could be detected in vivo, a fast renal clearance of the compound was observed...
March 23, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28332150/dynamic-nature-of-presenilin1-%C3%AE-secretase-implication-for-alzheimer-s-disease-pathogenesis
#12
REVIEW
Katarzyna Marta Zoltowska, Oksana Berezovska
Presenilin 1 (PS1) is a catalytic component of the γ-secretase complex, responsible for the intramembraneous cleavage of more than 90 type I transmembrane proteins, including Alzheimer's disease (AD)-related amyloid precursor protein (APP). The γ-secretase-mediated cleavage of the APP C-terminal membrane stub leads to the production of various amyloid β (Aβ) species. The assembly of Aβ into neurotoxic oligomers, which causes synaptic dysfunction and neurodegeneration, is influenced by the relative ratio of the longer (Aβ42/43) to shorter Aβ (Aβ40) peptides...
March 22, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28326064/contribution-of-ultra-deep-sequencing-in-the-clinical-diagnosis-of-a-new-fungal-pathogen-species-basidiobolus-meristosporus
#13
Emilie Sitterlé, Christophe Rodriguez, Roman Mounier, Julien Calderaro, Françoise Foulet, Michel Develoux, Jean-Michel Pawlotsky, Françoise Botterel
Some cases of fungal infection remained undiagnosed, especially when the pathogens are uncommon, require specific conditions for in vitro growth, or when several microbial species are present in the specimen. Ultra-Deep Sequencing (UDS) could be considered as a precise tool in the identification of involved pathogens in order to upgrade patient treatment. In this study, we report the implementation of UDS technology in medical laboratory during the follow-up of an atypical fungal infection case. Thanks to UDS technology, we document the first case of gastro-intestinal basidiobolomycosis (GIB) due to Basidiobolus meristosporus...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28324986/electrocardiographic-waveforms-fitness-check-device-technique-for-sudden-cardiac-death-risk-screening
#14
O J Escalona, M Mendoza
A novel cardiac health device technique development for reliable, non-invasive and cost-effective heart screening in preventive cardiovascular healthcare is presented. In particular, identification of apparently healthy individuals involved in sports activities (particularly in the young, age <; 35 years) who may be at-risk of sudden-cardiac-death (SCD) is mainly focused here. Nevertheless, the same device technique may be prospectively extended for detecting cardiovascular abnormalities in children and adolescents with type1-diabetes, and also in detecting patients with Brugada syndrome...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28320981/relationship-between-thromboelastography-and-long-term-ischemic-events-as-gauged-by-the-response-to-clopidogrel-in-patients-undergoing-elective-percutaneous-coronary-intervention
#15
Xumin Hou, Wenzheng Han, Qian Gan, Yuan Liu, Weiyi Fang
Ischemic events after percutaneous coronary intervention (PCI) remain a major concern for patients with coronary heart disease (CHD). The aim of the current study was to investigate whether thromboelastography (TEG) was a satisfactory technique to measure platelet function in vitro in order to improve risk stratification and the individual response to antiplatelet therapy. The diagnostic and prognostic utility of the maximum amplitude of adenosine diphosphate induced platelet-fibrin clots (MAADP) was measured with TEG in 759 patients undergoing elective PCI...
March 19, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/28319560/rash-diagnostics-an-update-on-the-diagnosis-of-allergic-rashes
#16
Corinne Savides Happel
PURPOSE OF REVIEW: The purpose of this review is to summarize recent research regarding the diagnosis of allergic rashes and to suggest future directions for the promotion of accurate diagnosis and endotype specification. RECENT FINDINGS: Multiple cohort studies demonstrate that with appropriate clinical evaluation, drug allergy labels can be removed in up to 90% of cases. Genetic tests can predict severe adverse cutaneous drug reactions in some cases and in vitro tests are being sought to identify causative drugs in others...
March 17, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28319142/microrna-32-promotes-calcification-in-vascular-smooth-muscle-cells-implications-as-a-novel-marker-for-coronary-artery-calcification
#17
Jianghua Liu, Xinhua Xiao, Yingying Shen, Ling Chen, Canxin Xu, Heng Zhao, Ying Wu, Qinghai Zhang, Jing Zhong, Zhenwang Tang, Changhui Liu, Qiang Zhao, Yi Zheng, Renxian Cao, Xuyu Zu
Cardiovascular calcification is one of the most severe outcomes associated with cardiovascular disease and often results in significant morbidity and mortality. Previous reports indicated that epigenomic regulation of microRNAs (miRNAs) might play important roles in vascular smooth muscle cell (VSMC) calcification. Here, we identified potential key miRNAs involved in vascular calcification in vivo and investigated the role of miR-32-5p (miR-32). According to microarray analysis, we observed increased expression of miR-125b, miR-30a, and miR-32 and decreased expression of miR-29a, miR-210, and miR-320 during the progression of vascularcalcification...
2017: PloS One
https://www.readbyqxmd.com/read/28318622/computer-assisted-topological-analysis-of-renal-allograft-inflammation-adds-to-risk-evaluation-at-diagnosis-of-humoral-rejection
#18
Antoine Sicard, Vannary Meas-Yedid, Maud Rabeyrin, Alice Koenig, Stephanie Ducreux, Frederique Dijoud, Valerie Hervieu, Lionel Badet, Emmanuel Morelon, Jean Christophe Olivo-Marin, Valerie Dubois, Olivier Thaunat
Antibody-mediated rejection is associated with heterogeneous kidney allograft outcomes. Accurate evaluation of risk for graft loss at time of diagnosis is necessary to offer personalized treatment. In contrast with serological and molecular assessment, morpho-histological evaluation of antibody-mediated rejection lesions has not significantly evolved. This relies on Banff classifications designed to be of diagnostic discriminatory power rather than prognostic and face quantitative and qualitative limitations...
March 15, 2017: Kidney International
https://www.readbyqxmd.com/read/28317976/albumin-based-nanoparticles-loaded-with-hydrophobic-gadolinium-chelates-as-t1-t2-dual-mode-contrast-agents-for-accurate-liver-tumor-imaging
#19
Lirong Wang, Hongyu Lin, Lingceng Ma, Jianbin Jin, Taipeng Shen, Ruixue Wei, Xiaomin Wang, Hua Ai, Zhong Chen, Jinhao Gao
Magnetic resonance contrast agents with T1-T2 dual mode contrast capability have attracted considerable interest because they offer complementary and synergistic diagnostic information, leading to high imaging sensitivity and accurate diagnosis. Here, we reported a facile strategy to construct albumin based nanoparticles loaded with hydrophobic gadolinium chelates by hydrophobic interaction for magnetic resonance imaging (MRI). We synthesized a glycyrrhetinic acid-containing Gd-DOTA derivative (GGD) and loaded GGD molecules into BSA nanoparticles to form GGD-BSA nanoparticles (GGD-BSA NPs)...
March 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28316623/a-review-of-the-role-of-neurotensin-and-its-receptors-in-colorectal-cancer
#20
REVIEW
Shengyang Qiu, Gianluca Pellino, Francesca Fiorentino, Shahnawaz Rasheed, Ara Darzi, Paris Tekkis, Christos Kontovounisios
Neurotensin (NTS) is a physiologically occurring hormone which affects the function of the gastrointestinal (GI) tract. In recent years, NTS, acting through its cellular receptors (NTSR), has been implicated in the carcinogenesis of several cancers. In colorectal cancer (CRC), a significant body of evidence, from in vitro and in vivo studies, is available which elucidates the molecular biology of NTS/NTSR signalling and the resultant growth of CRC cells. There is growing clinical data from human studies which corroborate the role NTS/NTSR plays in the development of human CRC...
2017: Gastroenterology Research and Practice
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