keyword
MENU ▼
Read by QxMD icon Read
search

TTR

keyword
https://www.readbyqxmd.com/read/28932938/assessment-of-oral-anticoagulation-control-at-two-pharmacist-managed-clinics-in-brazil
#1
Rogério Guimarães de Lima Silva, Caryne Margotto Bertollo, Isadora Gonçalves Ferreira, Luisa Caldeira Brant, Maria Auxiliadora Parreiras Martins
Background Warfarin remains widely used by patients with cardiovascular diseases. When using warfarin, the quality of oral anticoagulation control is a critical determinant to minimize the risk of bleeding and thromboembolic events. Pharmacist engagement in patient care is relevant towards improving the quality of warfarin therapy. Objective To assess the quality of oral anticoagulation control measured by time in therapeutic range (TTR) at two pharmacist-managed anticoagulation clinics (AC). Method This study included adults with indication of continuous warfarin use...
September 20, 2017: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/28922609/serum-proteomic-variability-associated-with-clinical-phenotype-in-familial-transthyretin-amyloidosis-attrm
#2
Gloria G Chan, Clarissa M Koch, Lawreen H Connors
Transthyretin (TTR), normally a plasma circulating protein, can become misfolded and aggregated, ultimately leading to extracellular deposition of amyloid fibrils usually targeted to heart or nerve tissues. Referred to as TTR-associated amyloidoses (ATTR), this group of diseases is frequently life threatening and fatal if untreated. ATTR, caused by amyloid-forming variant TTR proteins (ATTRm) which arise from point mutations in the TTR gene, were classically referred to as familial amyloid cardiomyopathy (FAC) or familial amyloid polyneuropathy (FAP) reflecting the clinical phenotype...
September 18, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28920684/stilbene-boronic-acids-form-a-covalent-bond-with-human-transthyretin-and-inhibit-its-aggregation
#3
Thomas P Smith, Ian W Windsor, Katrina T Forest, Ronald T Raines
Transthyretin (TTR) is a homotetrameric protein. Its dissociation into monomers leads to the formation of fibrils that underlie human amyloidogenic diseases. The binding of small molecules to the thyroxin-binding sites in TTR stabilizes the homotetramer and attenuates TTR amyloidosis. Herein, we report on boronic acid-substituted stilbenes that limit TTR amyloidosis in vitro. Assays of affinity for TTR and inhibition of its tendency to form fibrils were coupled with X-ray crystallographic analysis of nine TTR·ligand complexes...
September 18, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28920433/fluorotryptophan-incorporation-modulates-the-structure-and-stability-of-transthyretin-in-a-site-specific-manner
#4
Xun Sun, H Jane Dyson, Peter E Wright
Abnormal deposition of aggregated wild-type (WT) human transthyretin (TTR) and its pathogenic variants is responsible for cardiomyopathy and neuropathy related to TTR amyloidosis. The tryptophan (Trp) fluorescence measurements typically used to study structural changes of TTR do not yield site-specific information on the two Trp residues per TTR protomer. To obtain such information, tryptophan labeled with fluorine at the 5 and 6 positions (5FW and 6FW) was incorporated into TTR. Fluorescence of 5FW and 6FW-labeled WT-TTR (WT-5FW and WT-6FW) and a single-Trp mutant W41Y showed that the photophysics of incorporated fluoro-Trp is consistent with site-specific solvation of the indole ring of W41 and W79...
September 18, 2017: Biochemistry
https://www.readbyqxmd.com/read/28919452/the-affinity-of-transthyretin-for-t3-or-t4-does-not-determine-which-form-of-the-hormone-accumulates-in-the-choroid-plexus
#5
Samantha J Richardson, Stijn Van Herck, Joke Delbaere, Bronwyn M McAllan, Veerle M Darras
Normal development of the brain is dependent on the required amounts of thyroid hormones (THs) reaching specific regions of the brain during each stage of ontogeny. Many proteins are involved with regulation of TH bioavailability in the brain: the TH distributor protein transthyretin (TTR), TH transmembrane transporters (e.g. MCT8, MCT10, LAT1, OATP1C1) and deiodinases (D1, D2 and D3) which either activate or inactivate THs. Previous studies revealed that in mammals, T4, but not T3, accumulated in the choroid plexus and then entered the cerebrospinal fluid...
September 14, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28911993/ocular-manifestations-of-familial-transthyretin-amyloidosis
#6
Margaret M Reynolds, Kevin K Veverka, Morie A Gertz, Angela Dispenzieri, Steven R Zeldenrust, Nelson Leung, Jose S Pulido
PURPOSE: Among patients with familial amyloidosis, mutation in the transthyretin (TTR) protein is the most common type. Patients with TTR amyloidosis have been noted to have ocular, especially vitreous, involvement. In this report, an analysis of the types and frequency of ocular manifestations in TTR amyloidosis is presented. DESIGN: Observational case series. METHODS: Two hundred and sixty-three patients who presented to Mayo Clinic with TTR amyloidosis between January 1, 1970, and November 1, 2014, consented to be included in the Mayo Clinic amyloidosis database maintained by the Department of Hematology...
September 11, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28906150/safety-and-efficacy-of-a-ttr-specific-antisense-oligonucleotide-in-patients-with-transthyretin-amyloid-cardiomyopathy
#7
Merrill D Benson, Noel R Dasgupta, Stacy M Rissing, Jessica Smith, Harvey Feigenbaum
OBJECTIVES: Cardiomyopathy is a major cause of death in both the hereditary form of transthyretin (TTR) amyloidosis and the sporadic late-age-onset transthyretin amyloidosis (ATTR wild-type (ATTRwt)). Clinically disease progression from time of diagnosis to death is usually quoted as 5- to 15-years. In prior studies, significant progression of cardiac parameters in patients with moderate to severe cardiomyopathy has been noted within a 12-month time span. METHODS: The present study was designed to prospectively monitor changes in cardiac parameters, both structural and functional, in patients with ATTR cardiomyopathy while treated with a TTR specific antisense oligonucleotide (ASO; IONIS-TTR℞) designed to lower blood levels of the amyloid fibril precursor protein...
September 14, 2017: Amyloid: the International Journal of Experimental and Clinical Investigation
https://www.readbyqxmd.com/read/28904955/dental-hygiene-and-orthodontics-effect-of-ultrasonic-instrumentation-on-bonding-efficacy-of-different-lingual-orthodontic-brackets
#8
Andrea Scribante, Maria Francesca Sfondrini, Vittorio Collesano, Gaia Tovt, Luisa Bernardinelli, Paola Gandini
Dental hygienists are often faced with patients wearing lingual orthodontic therapy, as ultrasonic instrumentation (UI) is crucial for oral health. As the application of external forces can lead to premature bonding failure, the aim of this study was to evaluate the effect of UI on shear bond strength (SBS) and on adhesive remnant index (ARI) of different lingual orthodontic brackets. 200 bovine incisors were divided into 10 groups. Four different lingual (STB, Ormco; TTR, Rocky Mountain Orthodontics; Idea, Leone; 2D, Forestadent) and vestibular control (Victory, 3M) brackets were bonded...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28904227/peptide-probes-detect-misfolded-transthyretin-oligomers-in-plasma-of-hereditary-amyloidosis-patients
#9
Joseph D Schonhoft, Cecilia Monteiro, Lars Plate, Yvonne S Eisele, John M Kelly, Daniel Boland, Christopher G Parker, Benjamin F Cravatt, Sergio Teruya, Stephen Helmke, Mathew Maurer, John Berk, Yoshiki Sekijima, Marta Novais, Teresa Coelho, Evan T Powers, Jeffery W Kelly
Increasing evidence supports the hypothesis that soluble misfolded protein assemblies contribute to the degeneration of postmitotic tissue in amyloid diseases. However, there is a dearth of reliable nonantibody-based probes for selectively detecting oligomeric aggregate structures circulating in plasma or deposited in tissues, making it difficult to scrutinize this hypothesis in patients. Hence, understanding the structure-proteotoxicity relationships driving amyloid diseases remains challenging, hampering the development of early diagnostic and novel treatment strategies...
September 13, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28902413/frequent-genes-in-rare-diseases-panel-based-next-generation-sequencing-to-disclose-causal-mutations-in-hereditary-neuropathies
#10
Maike F Dohrn, Nicola Glöckle, Lejla Mulahasanovic, Corina Heller, Julia Mohr, Christine Bauer, Erik Riesch, Andrea Becker, Florian Battke, Konstanze Hörtnagel, Thorsten Hornemann, Saranya Suriyanarayanan, Markus Blankenburg, Jörg B Schulz, Kristl G Claeys, Burkhard Gess, Istvan Katona, Andreas Ferbert, Debora Vittore, Alexander Grimm, Stefan Wolking, Ludger Schöls, Holger Lerche, G Christoph Korenke, Dirk Fischer, Bertold Schrank, Urania Kotzaeridou, Gerhard Kurlemann, Bianca Dräger, Anja Schirmacher, Peter Young, Beate Schlotter-Weigel, Saskia Biskup
Hereditary neuropathies comprise a wide variety of chronic diseases associated to more than 80 genes identified to date. We herein examined 612 index patients with either a Charcot-Marie-Tooth phenotype, hereditary sensory neuropathy, familial amyloid neuropathy, or small fiber neuropathy using a customized multigene panel based on the next generation sequencing (NGS) technique. In 121 cases (19.8%), we identified at least one putative pathogenic mutation. Out of these, 54.4% showed an autosomal dominant, 33...
September 13, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28900607/de-novo-intraocular-amyloid-deposition-after-hepatic-transplantation-in-familial-amyloidotic-polyneuropathy
#11
Ivo Filipe Gama, Leonor Duarte Almeida
The familiar amyloid polyneuropathy (FAP) is a rare autosomal-dominant systemic amyloidosis. Amyloid deposition occurs more frequently and extensively in the vitq. The increase in intraocular pressure (IOP) is a result of deposition of transthyretin (TTR) in trabecular meshwork. Rarely, the amyloid deposition in anterior segment can be more exuberant than in posterior segment. A 42 years old man, with FAP (Val30Met mutation), liver transplantation in 1997. He was asymptomatic, without any significant ocular abnormality until 2011...
August 24, 2017: World Journal of Transplantation
https://www.readbyqxmd.com/read/28892413/enhancing-the-real-world-prediction-of-cardiovascular-events-and-major-bleeding-with-the-cha2ds2-vasc-and-has-bled-scores-using-multiple-biomarkers
#12
Vanessa Roldán, José Miguel Rivera-Caravaca, Alena Shantsila, Amaya García-Fernández, María Asunción Esteve-Pastor, Juan Antonio Vilchez, Marta Romera, Mariano Valdés, Vicente Vicente, Francisco Marín, Gregory Y H Lip
BACKGROUND: Atrial fibrillation (AF)-European guidelines suggest the use of biomarkers to stratify patients for stroke and bleeding risks. We investigated if a multi-biomarker strategy improved the predictive performance of CHA2DS2-VASc and HAS-BLED in anticoagulated AF patients. METHODS: We included consecutive patients stabilized for 6 months on vitamin K antagonists (INRs 2.0-3.0). High sensitivity troponin T, N-proBNP, interleukin 6, von Willebrand factor concentrations and glomerular filtration rate (eGFR; using MDRD-4 formula) were quantified at baseline...
September 11, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28891012/visualization-of-multiple-organ-amyloid-involvement-in-systemic-amyloidosis-using-11-c-pib-pet-imaging
#13
Naoki Ezawa, Nagaaki Katoh, Kazuhiro Oguchi, Tsuneaki Yoshinaga, Masahide Yazaki, Yoshiki Sekijima
PURPOSE: To investigate the utility of Pittsburgh compound B (PiB) positron emission tomography (PET) imaging for evaluating whole-body amyloid involvement in patients with systemic amyloidosis. METHODS: Whole-body (11)C-PiB PET was performed in seven patients with systemic immunoglobulin light-chain (AL) amyloidosis, seven patients with hereditary transthyretin (ATTRm) amyloidosis, one asymptomatic TTR mutation carrier and three healthy controls. The correlations between clinical organ involvement, radiological (11)C-PiB uptake and histopathological findings were analysed for each organ...
September 10, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28876464/novel-mutations-in-transthyretin-gene-associated-with-hepatocellular-carcinoma
#14
Deepshikha Pande Katare, Shabnam Malik, Ruchi Jakhmola Mani, Maryam Ranjpour, S K Jain
Hepatocellular carcinoma (HCC) is one of the major health problems with increasing incidence worldwide. We report the elevation in transthyretin (TTR) expression following HCC induction using diethylnitrosamine (DEN) and 2-aminoacetylfluorine (2-AAF) in male Wistar rats. The increase in its expression took place at very early stage and remained elevated throughout HCC progression. The analysis of TTR gene in HCC bearing rats revealed four novel mutations that alter three amino acids at positions 61, 100 and 115...
September 6, 2017: Molecular Carcinogenesis
https://www.readbyqxmd.com/read/28868260/tpoab-and-thyroid-function-are-not-associated-with-breast-cancer-outcome-evidence-from-a-large-scale-study-using-data-from-the-taxotere-as-adjuvant-chemotherapy-trial-tact-cruk01-001
#15
Ilaria Muller, Lucy S Kilburn, Peter N Taylor, Peter J Barrett-Lee, Judith M Bliss, Paul Ellis, Marian E Ludgate, Colin M Dayan
BACKGROUND: Small-scale studies correlated the presence of thyroid autoimmunity with both improved or worsened breast cancer outcome. OBJECTIVES: We aimed to clarify this association in a large cohort using the phase III, randomized, controlled Taxotere as Adjuvant Chemotherapy Trial (TACT, CRUK01/001). METHODS: TACT women >18 years old with node-positive or high-risk node-negative early breast cancer (pT1-3a, pN0-1, M0), with stored plasma (n = 1,974), taken 15...
July 2017: European Thyroid Journal
https://www.readbyqxmd.com/read/28840452/transthyretin-cardiac-amyloidosis
#16
REVIEW
Anit K Mankad, Keyur B Shah
PURPOSE OF REVIEW: Transthyretin (TTR)-related cardiac amyloidosis is a progressive infiltrative cardiomyopathy that mimics hypertensive, hypertrophic heart disease and may go undiagnosed. Transthyretin-derived amyloidosis accounts for 18% of all cases of cardiac amyloidosis. Thus, the study's purpose is to provide a comprehensive review of transthyretin cardiac amyloidosis. RECENT FINDINGS: Wild-type transthyretin (ATTRwt) protein causes cardiac amyloidosis sporadically, with 25 to 36% of the population older than 80 years of age are at risk to develop a slowly progressive, infiltrative amyloid cardiomyopathy secondary to ATTRwt...
August 24, 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28838386/prevalence-and-clinical-association-of-met-gene-overexpression-and-amplification-in-patients-with-nsclc-results-from-the-european-thoracic-oncology-platform-etop-lungscape-project
#17
Lukas Bubendorf, Urania Dafni, Martin Schöbel, Stephen P Finn, Verena Tischler, Aleksandra Sejda, Antonio Marchetti, Erik Thunnissen, Eric K Verbeken, Arne Warth, Irene Sansano, Richard Cheney, Ernst Jan M Speel, Daisuke Nonaka, Kim Monkhorst, Henrik Hager, Miguel Martorell, Spasenija Savic, Keith M Kerr, Qiang Tan, Zoi Tsourti, Thomas R Geiger, Roswitha Kammler, Katja Schulze, Ashis Das-Gupta, David Shames, Solange Peters, Rolf A Stahel
INTRODUCTION: In a well-defined NSCLC cohort of the ETOP Lungscape program, we explored the epidemiology of IHC MET overexpression and amplification, their inter-correlation, and their association to outcome. METHODS: Resected NSCLC were assessed for MET gene copy number (GCN) and expression using silver in-situ hybridization (SISH) and immunohistochemistry (IHC) on TMAs in a multicenter setting. MET amplification was defined as MET/centromere ratio≥2 (with average MET GCN≥4), high MET GCN as CGN≥5 and MET IHC+ as ≥2+ intensity in ≥50% of tumor cells...
September 2017: Lung Cancer: Journal of the International Association for the Study of Lung Cancer
https://www.readbyqxmd.com/read/28832209/triceps-tendon-ruptures-a-systematic-review
#18
John C Dunn, Nicholas Kusnezov, Austin Fares, Sydney Rubin, Justin Orr, Darren Friedman, Kelly Kilcoyne
BACKGROUND: Triceps tendon ruptures (TTR) are an uncommon injury. The aim of this systematic review was to classify diagnostic signs, report outcomes and rerupture rates, and identify potential predisposing risk factors in all reported cases of surgical treated TTR. METHODS: A literature search collecting surgical treated cases of TTR was performed, identifying 175 articles, 40 of which met inclusion criteria, accounting for 262 patients. Data were pooled and analyzed focusing on medical comorbidities, presence of a fleck fracture on the preoperative lateral elbow x-ray film (Dunn-Kusnezov Sign [DKS]), outcomes, and rerupture rates...
September 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28831812/thromboembolic-and-major-bleeding-events-with-rivaroxaban-versus-warfarin-use-in-a-real-world-setting
#19
Giavanna Russo-Alvarez, Kathryn A Martinez, Megan Valente, James Bena, Bo Hu, Jennifer Luxenburg, Alexander Chaitoff, Catherine Ituarte, Andrei Brateanu, Michael B Rothberg
BACKGROUND: Although randomized trials demonstrate the noninferiority of rivaroxaban compared with warfarin in the context of nonvalvular atrial fibrillation (AF), little is known about how these drugs compare in practice. OBJECTIVE: To assess the relative effectiveness and safety of rivaroxaban versus warfarin in a large health system and to evaluate this association by time in therapeutic range (TTR). METHODS: We conducted a retrospective cohort study with propensity matching in the Cleveland Clinic Health System...
August 1, 2017: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28820582/pathogenic-mutations-induce-partial-structural-changes-in-the-native-%C3%AE-sheet-structure-of-transthyretin-and-accelerate-aggregation
#20
Kwang Hun Lim, Anvesh K R Dasari, Renze Ma, Ivan Hung, Zhehong Gan, Jeffery W Kelly, Michael C Fitzgerald
Amyloid formation of natively folded proteins involves global and/or local unfolding of the native state to form aggregation-prone intermediates. Here we report solid-state nuclear magnetic resonance (NMR) structural studies of amyloid derived from wild-type (WT) and more aggressive mutant forms of transthyretin (TTR) to investigate the structural changes associated with effective TTR aggregation. We employed selective (13)C labeling schemes to investigate structural features of β-structured core regions in amyloid states of WT and two mutant forms (V30M and L55P) of TTR...
September 12, 2017: Biochemistry
keyword
keyword
3099
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"