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fibrosis imaging

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https://www.readbyqxmd.com/read/28920862/enhanced-endothelium-epithelial-sodium-channel-signaling-prompts-left-ventricular-diastolic-dysfunction-in-obese-female-mice
#1
Guanghong Jia, Javad Habibi, Annayya R Aroor, Michael A Hill, Vincent G DeMarco, Li E Lee, Lixin Ma, Brady J Barron, Adam Whaley-Connell, James R Sowers
OBJECTIVE: Enhanced activation of cell specific mineralocorticoid receptors (MRs) in obesity plays a key role in the development of cardiovascular disease including cardiac diastolic dysfunction as a critical prognosticator. Our previous investigations demonstrated that selective endothelium MR activation promotes a maladaptive inflammatory response and fibrosis in cardiovascular tissue in female mice fed a western diet (WD), and this was associated with expression and activation of the epithelial sodium channel on the surface of endothelial cells (EnNaC)...
September 8, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28910586/global-and-regional-cardiac-function-in-lifelong-endurance-athletes-with-and-without-myocardial-fibrosis
#2
Thijs M H Eijsvogels, David L Oxborough, Rory O'Hanlon, Sanjay Sharma, Sanjay Prasad, Greg Whyte, Keith P George, Mathew G Wilson
The aim of the present study was to compare cardiac structure as well as global and regional cardiac function in athletes with and without myocardial fibrosis (MF). Cardiac magnetic resonance imaging with late gadolinium enhancement was used to detect MF and global cardiac structure in nine lifelong veteran endurance athletes (58 ± 5 years, 43 ± 5 years of training). Transthoracic echocardiography using tissue-Doppler and myocardial strain imaging assessed global and regional (18 segments) longitudinal left ventricular function...
September 14, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28905365/iron-storage-in-liver-bone-marrow-and-splenic-gaucheroma-reflects-residual-disease-in-type-1-gaucher-disease-patients-on-treatment
#3
Martine Regenboog, Anneloes E Bohte, Erik M Akkerman, Jaap Stoker, Carla E M Hollak
Gaucher disease (GD) is a lysosomal storage disorder characterized by the storage of glycosphingolipids in macrophages. Despite effective therapy, residual disease is present in varying degrees and may be associated with late complications, such as persistent bone or liver disease and increased cancer risk. Gaucher macrophages are capable of storing iron and locations of residual disease may thus be detectable with iron imaging. Forty type 1 GD (GD1) patients and 40 matched healthy controls were examined using a whole-body magnetic resonance imaging protocol consisting of standard sequences, allowing analysis of iron content per organ, expressed as R2* (Hz)...
September 14, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28900045/gbcas-and-risk-for-nephrogenic-systemic-fibrosis-a-literature-review
#4
Asher Street Beam, Kristi G Moore, Savannah N Gillis, Kala F Ford, Tyler Gray, Anne Howard Steinwinder, Alexa Graham
PURPOSE: To examine the risks of using of gadolinium-based contrast agents (GBCAs) in magnetic resonance (MR) imaging and explore strategies to reduce the likeliness of adverse effects in patients who might be at risk for developing nephrogenic system fibrosis (NSF). METHODS: A search of 3 scholarly databases was performed to identify articles that discuss adverse reactions to GBCAs, specifically relating to kidney function, in MR examinations. A total of 20 peer-reviewed articles were analyzed...
July 2017: Radiologic Technology
https://www.readbyqxmd.com/read/28898189/ct-texture-analysis-definitions-applications-biologic-correlates-and-challenges
#5
Meghan G Lubner, Andrew D Smith, Kumar Sandrasegaran, Dushyant V Sahani, Perry J Pickhardt
This review discusses potential oncologic and nononcologic applications of CT texture analysis ( CTTA CT texture analysis ), an emerging area of "radiomics" that extracts, analyzes, and interprets quantitative imaging features. CTTA CT texture analysis allows objective assessment of lesion and organ heterogeneity beyond what is possible with subjective visual interpretation and may reflect information about the tissue microenvironment. CTTA CT texture analysis has shown promise in lesion characterization, such as differentiating benign from malignant or more biologically aggressive lesions...
September 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28895061/valvular-heart-disease-in-women-differential-remodeling-and-response-to-new-therapies
#6
REVIEW
Jaya Chandrasekhar, George Dangas, Roxana Mehran
In the United States, valvular heart disease (VHD) has a prevalence of 2.5%, most commonly presenting as aortic stenosis (AS) or mitral valve regurgitation (MR) and increasingly observed to be of a degenerative etiology. Women frequently have latent symptoms despite significant disease, and it is therefore pertinent to consider both clinical symptoms and imaging findings for decision-making on treatment. Indeed, significant advances have been made in noninvasive imaging allowing for more accurate diagnosis and disease prognostication...
September 11, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28894888/-posttherapeutic-changes-in-bone-marrow
#7
REVIEW
T Geith, A-C Stellwag, A Baur-Melnyk
The bone marrow basically consists of red blood-forming bone marrow and yellow fat. In the skeleton, there is an age-dependent distribution of these two parts. In the context of medical interventions or therapies, bone marrow changes can occur, whereby the normal bone marrow can basically be replaced by fat, edema, or fibrosis/sclerosis. Here, specific signal intensities and patterns are shown in imaging. After irradiation therapies, edematous changes, hemorrhages, and osteoradionecroses are observed. Likewise, insufficiency fractures, impairment of the growth gaps, or the development of tumors is possible...
September 11, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28894055/-igg4-related-periaortitis-manifested-as-contained-rupture-of-penetrating-atherosclerotic-ulcer
#8
Takeshi Someya, Shogo Sakurai, Toshizumi Shirai
We report a case of IgG4-related periaortitis of the descending aorta manifested as a contained rupture of penetrating atherosclerotic ulcer(PAU). A 67-year-old male was admitted to our hospital complaining about chest pain. Computed tomography(CT) and magnetic resonance imaging revealed PAU with extravasation of the descending aorta and thickening of surrounding tissues. Fluorodeoxyglucose-positron emission tomography (FDG-PET) CT demonstrated abnormal accumulation of FDG at the thickening sites, and serum IgG4 value was abnormally high...
September 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28892806/a-novel-missense-gla-mutation-p-g35v-detected-in-hemodialysis-screening-leads-to-severe-systemic-manifestations-of-fabry-disease-in-men-and-women
#9
Valeria Soares Pigozzi Veloso, Thiago Lacerda Ataides, Maria Eugênia Fernandes Canziani, Mariana Pigozzi Veloso, Nilzio Antônio da Silva, Daniela Veit Barreto, Edna Regina Silva Pereira, Luiz Antonio Ribeiro de Moura, Fellype Carvalho Barreto
BACKGROUND/AIMS: Fabry disease (FD), an X-linked lysosomal storage disorder, leads to accumulation of globotriaosylceramide. Screening in dialysis patients may identify genetic variants of unknown clinical significance. We aimed to characterize the pathogenicity of a novel GLA gene mutation identified during hemodialysis screening and the histologic findings of early Fabry nephropathy. METHODS: One out of 108 male hemodialysis patients screened for FD presented low α-galactosidase A activity...
September 12, 2017: Nephron
https://www.readbyqxmd.com/read/28892558/the-ask1-inhibitor-selonsertib-in-patients-with-nonalcoholic-steatohepatitis-a-randomized-phase-2-trial
#10
Rohit Loomba, Eric Lawitz, Parvez S Mantry, Saumya Jayakumar, Stephen H Caldwell, Hays Arnold, Anna Mae Diehl, C Stephen Djedjos, Ling Han, Robert P Myers, G Mani Subramanian, John G McHutchison, Zachary D Goodman, Nezam H Afdhal, Michael R Charlton
Inhibition of apoptosis signal-regulating kinase 1 (ASK1), a serine/threonine kinase, leads to improvement in inflammation and fibrosis in animal models of nonalcoholic steatohepatitis (NASH). We evaluated the safety and efficacy of selonsertib, a selective inhibitor of ASK1, alone or in combination with simtuzumab, in patients with NASH and stage 2 or 3 liver fibrosis. In this multicenter phase 2 trial, 72 patients were randomized to receive 24 weeks of open-label treatment with either 6 or 18 mg of selonsertib orally once daily with or without once-weekly injections of 125 mg of simtuzumab, or simtuzumab alone...
September 11, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28888897/hepatobiliary-disease-in-children-and-adolescents-with-cystic-fibrosis
#11
Fernanda de S Nascimento, Nelson A Sena, Tatiane da A Ferreira, Cibele D F Marques, Luciana R Silva, Edna Lúcia S de Souza
OBJECTIVES: The aims of the study were to determine the frequency of hepatobiliary disease in patients with CF and to describe the sociodemographic, clinical, and laboratory profile of these patients. METHODS: This was a retrospective, descriptive, and analytical study of 55 patients diagnosed with CF fibrosis, aged between 3 months and 21 years, followed-up from January 2008 to June 2016 in a referral center. Medical records were consulted, including sociodemographic, clinical and laboratory data, including hepatobiliary alterations, imaging studies, genetic studies, liver biopsies, and upper digestive endoscopies...
September 7, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28888785/infrared-spectroscopic-imaging-label-free-biochemical-analysis-of-stroma-and-tissue-fibrosis
#12
Shaiju S Nazeer, Hari Sreedhar, Vishal K Varma, David Martinez-Marin, Christine Massie, Michael J Walsh
Infrared spectroscopic tissue imaging is a potentially powerful adjunct tool to current histopathology techniques. By coupling the biochemical signature obtained through infrared spectroscopy to the spatial information offered by microscopy, this technique can selectively analyze the chemical composition of different features of unlabeled, unstained tissue sections. In the past, the tissue features that have received the most interest were parenchymal and epithelial cells, chiefly due to their involvement in dysplasia and progression to carcinoma; however, the field has recently turned its focus toward stroma and areas of fibrotic change...
September 6, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28887431/neutrophil-derived-cytosolic-pla2%C3%AE-contributes-to-bacterial-induced-neutrophil-transepithelial-migration
#13
Lael M Yonker, Michael A Pazos, Bernard B Lanter, Hongmei Mou, Kengyeh K Chu, Alexander D Eaton, Joseph V Bonventre, Guillermo J Tearney, Jayaraj Rajagopal, Bryan P Hurley
Eicosanoids are a group of bioactive lipids that are shown to be important mediators of neutrophilic inflammation; selective targeting of their function confers therapeutic benefit in a number of diseases. Neutrophilic airway diseases, including cystic fibrosis, are characterized by excessive neutrophil infiltration into the airspace. Understanding the role of eicosanoids in this process may reveal novel therapeutic targets. The eicosanoid hepoxilin A3 is a pathogen-elicited epithelial-produced neutrophil chemoattractant that directs transepithelial migration in response to infection...
September 8, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28886329/a-case-of-igg4-related-retroperitoneal-fibrosis-with-multiple-involvement
#14
Y-K Zheng, N-Y Gu, J Wu, X Fang, C Zhang, Q-Y Li
To increase awareness of IgG4-related retroperitoneal fibrosis (IgG4-RRPF) and reduce clinical misdiagnosis. We report a 79-year-old man with multiple organs involvement of IgG4-RRPF, who developed right lower extremity edema, hemoptysis and fever. The abdomen computed tomography (CT) scan image showed lymph nodes enlargement. The positron emission tomography/CT scan image showed pancreatic malignancy with multiple nodal lymph node metastasis, lung fibroblast proliferation, and right lung apex bullae. The chest CT scan image showed pulmonary multiple lymph nodes with calcification in the mediastinum...
August 30, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28886193/estimating-the-incidence-of-interstitial-lung-diseases-in-the-cree-of-eeyou-istchee-northern-qu%C3%A3-bec
#15
Matthieu Storme, Alexandre Semionov, Deborah Assayag, Michael Lefson, Darlene Kitty, David Dannenbaum, Jill Torrie, Pierre Lejeune, Elizabeth Robinson, Faiz Ahmad Khan
BACKGROUND: Little is known about the epidemiology of interstitial lung disease (ILD) amongst Canada's Indigenous populations. Clinicians working in Eeyou Istchee (the Cree territory of the James Bay region of Québec, population 17, 956) suspected that ILD was more common in this area. We sought to identify all prevalent and incident cases of ILD in Eeyou Istchee between 2006 and 2013, to describe characteristics of affected patients, distribution of subtypes, and estimate disease incidence...
2017: PloS One
https://www.readbyqxmd.com/read/28885276/performance-of-simple-noninvasive-scoring-systems-for-the-prediction-of-advanced-fibrosis-in-patients-with-chronic-hepatitis-b
#16
Sonja Lang, Fabian Kütting, Agnes Staub, Jessica Schramowski, Christoph Schramm, Philipp Kasper, Tobias Goeser, Hans-Michael Steffen, Münevver Demir
BACKGROUND AND AIM: The aim of the study was to analyze the diagnostic performance and clinical utility of simple noninvasive tests for the detection of advanced fibrosis in patients with chronic hepatitis B (CHB) infection seen at a tertiary referral center in Germany. PATIENTS AND METHODS: We retrospectively analyzed 239 adult CHB patients with available liver biopsies. Patient demographics, hepatitis B markers, antiviral treatment, laboratory parameters, results from liver imaging, and histology were recorded...
September 6, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28883709/tegafur-uracil-induced-rapid-development-of-advanced-hepatic-fibrosis
#17
Shuya Honda, Koji Sawada, Takumu Hasebe, Shunsuke Nakajima, Mikihiro Fujiya, Toshikatsu Okumura
Tegafur-uracil has been reported to have only minor adverse effects and is associated with liver injury in 1.79% of Japanese patients. The development of tegafur-uracil-induced hepatic fibrosis with portal hypertension is rare. Here, we report a case of a 74-year-old woman with rapidly developing tegafur-uracil-induced hepatic fibrosis. The patient had no history of liver disease and had been treated with tegafur-uracil for 8 mo after breast cancer surgery. The patient was admitted to our hospital for abdominal distension and leg edema associated with liver dysfunction...
August 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28883694/cytoplasmic-domain-of-tissue-factor-promotes-liver-fibrosis-in-mice
#18
Virginia Knight, Dinushka Lourensz, Jorge Tchongue, Jeanne Correia, Peter Tipping, William Sievert
AIM: To evaluate the role of tissue factor (TF) and protease activated receptor (PAR)-2 in liver fibrosis. METHODS: Using CCl4 administration for eight weeks, we induced hepatic fibrosis in wild-type C57BL/6 mice and in mice with deletion of the cytoplasmic signalling domain of TF (TF(§CT/§CT)), deletion of PAR-2 (PAR-2(-/-)) and combined deletion of TF signalling domain and PAR-2 (TF(§CT/§CT)/PAR-2(-/-)). Hepatic fibrosis area was assessed by quantitative imaging of picrosirius red staining...
August 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28882227/left-atrial-fibrosis-and-risk-of-cerebrovascular-and-cardiovascular-events-in-patients-with%C3%A2-atrial-fibrillation
#19
Jordan B King, Peyman N Azadani, Promporn Suksaranjit, Adam P Bress, Daniel M Witt, Frederick T Han, Mihail G Chelu, Michelle A Silver, Joseph Biskupiak, Brent D Wilson, Alan K Morris, Eugene G Kholmovski, Nassir Marrouche
BACKGROUND: Severity of left atrial (LA) fibrosis is a strong predictor of atrial fibrillation (AF) ablation success and has been associated with a history of stroke, hypertension, and heart failure (HF). However, it is unclear whether more severe LA fibrosis independently increases the risk of major adverse cardiovascular and cerebrovascular events (MACCE) among those with AF. OBJECTIVES: The goal of this study was to evaluate the occurrence and frequency of MACCE by strata of LA fibrosis severity in patients with AF...
September 12, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28881830/value-of-quantitative-magnetic-resonance-imaging-t1-relaxometry-in-predicting-contrast-enhancement-in-glioblastoma-patients
#20
Elke Hattingen, Andreas Müller, Alina Jurcoane, Burkhard Mädler, Philip Ditter, Hans Schild, Ulrich Herrlinger, Martin Glas, Sied Kebir
SUMMARIZING THE IMPORTANCE OF THE STUDY: The repetitive usage of gadolinium-based contrast agents (GBCA) is critical for magnetic resonance imaging (MRI) evaluation of tumor burden in glioblastoma patients. It is also a crucial tool for determination of radiographical response to treatment. GBCA injection, however, comes with a 2.4% rate of adverse events including life-threatening conditions such as nephrogenic systemic fibrosis (NSF). Moreover, GBCA have been shown to be deposited in brain tissue of patients even with an intact blood-brain barrier (BBB)...
August 8, 2017: Oncotarget
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