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https://www.readbyqxmd.com/read/29042619/diffusion-tensor-image-features-predict-idh-genotype-in-newly-diagnosed-who-grade-ii-iii-gliomas
#1
Paul Eichinger, Esther Alberts, Claire Delbridge, Stefano Trebeschi, Alexander Valentinitsch, Stefanie Bette, Thomas Huber, Jens Gempt, Bernhard Meyer, Juergen Schlegel, Claus Zimmer, Jan S Kirschke, Bjoern H Menze, Benedikt Wiestler
We hypothesized that machine learning analysis based on texture information from the preoperative MRI can predict IDH mutational status in newly diagnosed WHO grade II and III gliomas. This retrospective study included in total 79 consecutive patients with a newly diagnosed WHO grade II or III glioma. Local binary pattern texture features were generated from preoperative B0 and fractional anisotropy (FA) diffusion tensor imaging. Using a training set of 59 patients, a single hidden layer neural network was then trained on the texture features to predict IDH status...
October 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29042303/changes-in-serum-proteins-in-dogs-with-ehrlichia-canis-infection
#2
Damián Escribano, Hüseyin Cihan, Silvia Martínez-Subiela, Pinar Levent, Meric Kocaturk, Nilüfer Aytug, Jose Joaquin Cerón, Asta Tvarijonaviciute, Zeki Yilmaz
The aim of this study was the identification of proteins differentially represented in the serum proteome of seropositive dogs with (Group 1) and without (Group 2) clinical-pathologic signs consistent with ehrlichiosis compared to healthy dogs. Serum samples were collected from 20 dogs of various breeds with naturally occurring ehrlichiosis (10 dogs belonged to Group 1 and 10 to Group 2) and 10 healthy dogs. Two-dimensional electrophoresis (2DE) of pooled serum for each of tge group of dogs were run in triplicate...
October 14, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29041865/imaging-outcome-measures-for-progressive-multiple-sclerosis-trials
#3
Marcello Moccia, Nicola de Stefano, Frederik Barkhof
Imaging markers that are reliable, reproducible and sensitive to neurodegenerative changes in progressive multiple sclerosis (MS) can enhance the development of new medications with a neuroprotective mode-of-action. Accordingly, in recent years, a considerable number of imaging biomarkers have been included in phase 2 and 3 clinical trials in primary and secondary progressive MS. Brain lesion count and volume are markers of inflammation and demyelination and are important outcomes even in progressive MS trials...
October 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/29036528/prediction-of-pathologic-responders-to-neoadjuvant-chemoradiotherapy-by-diffusion-weighted-magnetic-resonance-imaging-in-locally-advanced-esophageal-squamous-cell-carcinoma-a-prospective-study
#4
Q-W Li, B Qiu, B Wang, D-L Wang, S-H Yin, H Yang, J-L Liu, J-H Fu, M-Z Liu, C-M Xie, H Liu
This study aims to investigate the role of diffusion-weighted magnetic resonance imaging (DW-MRI) in ESCC patients receiving neoadjuvant concurrent chemoradiotherapy (CCRT), and the efficacy of apparent diffusion coefficient (ADC) values in predicting pathologic response to neoadjuvant CCRT. Twenty-eight locally advanced ESCC patients treated with neoadjuvant CCRT followed by radical resection were prospectively enrolled. DW-MRI was recommended to be performed within 2 weeks before and 4-6 weeks after neoadjuvant CCRT...
September 27, 2017: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/29036251/an-adhesive-patch-based-skin-biopsy-device-for-molecular-diagnostics-and-skin-microbiome-studies
#5
Zuxu Yao, Ronald Moy, Talisha Allen, Burkhard Jansen
INTRODUCTION: A number of diagnoses in clinical dermatology are currently histopathologically confirmed and this image recognition-based confirmation generally requires surgical biopsies. The increasing ability of molecular pathology to corroborate or correct a clinical diagnosis based on objective gene expression, mutation analysis, or molecular microbiome data is on the horizon and would be further supported by a tool or procedure to collect samples non-invasively. This study characterizes such a tool in form of a 'bladeless' adhesive patch-based skin biopsy device...
October 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29035378/molecular-similarities-and-differences-from-human-pulmonary-fibrosis-and-corresponding-mouse-model-maldi-imaging-mass-spectrometry-in-comparative-medicine
#6
Michaela Aichler, Thomas Kunzke, Achim Buck, Na Sun, Maximilian Ackermann, Danny Jonigk, Andreas Gaumann, Axel Walch
Animal models can reproduce some model-specific aspects of human diseases, but some animal models translate poorly or fail to translate to the corresponding human disease. Here, we develop a strategy to systematically compare human and mouse tissues, and conduct a proof-of-concept experiment to identify molecular similarities and differences using patients with idiopathic pulmonary fibrosis and a bleomycin-induced fibrosis mouse model. Our novel approach employs high-throughput tissue microarrays (TMAs) of humans and mice, high-resolution matrix-assisted laser desorption/ionization-Fourier transform-ion cyclotron resonance-mass spectrometry imaging (MALDI-FT-ICR-MSI) to spatially resolve mass spectra at the level of specific metabolites, and hierarchical clustering and pathway enrichment analysis to identify functionally similar/different molecular patterns and pathways in pathological lesions of humans and mice...
October 16, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29034720/investigating-the-neuroanatomical-substrate-of-pathological-laughing-and-crying-in-amyotrophic-lateral-sclerosis-with-multimodal-neuroimaging-techniques
#7
Foteini Christidi, Efstratios Karavasilis, Panagiotis Ferentinos, Sophia Xirou, Georgios Velonakis, Michalis Rentzos, Vasiliki Zouvelou, Ioannis Zalonis, Efstathios Efstathopoulos, Nikolaos Kelekis, Ioannis Evdokimidis
OBJECTIVE: Pathological laughing and crying (PLC) is common in several neurological and psychiatric diseases and is associated with a distributed network involving the frontal cortex, the brainstem and cortico-pontine-cerebellar circuits. By applying multimodal neuroimaging approach, we examined the neuroanatomical substrate of PLC in a sample of patients with amyotrophic lateral sclerosis (ALS). METHODS: We studied 56 non-demented ALS patients and 25 healthy controls (HC)...
October 15, 2017: Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration
https://www.readbyqxmd.com/read/29034309/metastatic-uterine-tumor-resembling-ovarian-sex-cord-tumor-a-case-report-and-review-of-the-literature
#8
Michelle L Kuznicki, Sharon E Robertson, Ardeshir Hakam, Mian M Shahzad
Uterine tumors resembling ovarian sex cord tumors (UTROSCTs) are rare and commonly characterized as benign tumors, with infrequent reports of metastasis and recurrence. Treatment recommendations have not been well established, particularly for more advanced cases. We present the first reported death from a metastatic UTROSCT, summarize the available literature, and describe characteristics common to UTROSCTs with aggressive features. In this case, a 49-year-old woman presented with abdominal distension and pain; initial imaging and diagnostic workup suggested metastatic epithelial ovarian cancer to be the cause...
November 2017: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/29033831/accumulation-of-123-i-ioflupane-is-a-useful-marker-of-the-efficacy-of-selegiline-monotherapy-in-drug-na%C3%A3-ve-parkinson-s-disease
#9
Hidetomo Murakami, Tetsuhito Nohara, Masanobu Uchiyama, Yoshiyuki Owan, Akinori Futamura, Azusa Shiromaru, Setsuro Tsukada, Yu Saito, Takeshi Kuroda, Satoshi Yano, Seiichiro Ishigaki, Hirotaka Katoh, Jiro Munechika, Yoshimitsu Ohgiya, Takehiko Gokan, Kenjiro Ono
Background: Selegiline enhances the patient's endogenous dopamine by inhibiting dopamine metabolism. The efficacy of selegiline monotherapy for drug-naïve Parkinson's disease (PD) patients may depend on the degree of dopaminergic neuronal degeneration. (123)I-Ioflupane single photon emission computed tomography (SPECT) and (123)I-meta-iodobenzylguanidine (MIBG) myocardial scintigraphy are diagnostic methods to assess the pharmacological and pathological changes in PD. Objective: We examined the utility of these imaging methods to predict the efficacy of selegiline monotherapy for motor symptoms in drug-naïve PD patients...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29033190/3d-modelling-of-radical-prostatectomy-specimens-developing-a-method-to-quantify-tumor-morphometry-for-prostate-cancer-risk-prediction
#10
Marcus C Hovens, Kevin Lo, Michael Kerger, John Pedersen, Timothy Nottle, Natalie Kurganovs, Andrew Ryan, Justin S Peters, Daniel Moon, Anthony J Costello, Niall M Corcoran, Matthew K H Hong
Prostate cancer displays a wide spectrum of clinical behaviour from biological indolence to rapidly lethal disease, but we remain unable to accurately predict an individual tumor's future clinical course at an early curable stage. Beyond basic dimensions and volume calculations, tumor morphometry is an area that has received little attention, as it requires the analysis of the prostate gland and tumor foci in three-dimensions. Previous efforts to generate three-dimensional prostate models have required specialised graphics units and focused on the spatial distribution of tumors for optimisation of biopsy strategies rather than to generate novel morphometric variables such as tumor surface area...
September 27, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/29030941/spatiotemporal-image-correlation-analysis-of-blood-flow-in-branched-vessel-networks-of-zebrafish-embryos
#11
Nicolo G Ceffa, Ilaria Cesana, Maddalena Collini, Laura D'Alfonso, Silvia Carra, Franco Cotelli, Laura Sironi, Giuseppe Chirico
Ramification of blood circulation is relevant in a number of physiological and pathological conditions. The oxygen exchange occurs largely in the capillary bed, and the cancer progression is closely linked to the angiogenesis around the tumor mass. Optical microscopy has made impressive improvements in in vivo imaging and dynamic studies based on correlation analysis of time stacks of images. Here, we develop and test advanced methods that allow mapping the flow fields in branched vessel networks at the resolution of 10 to 20  μm...
October 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29030922/the-role-of-mitochondria-in-axon-development-and-regeneration
#12
REVIEW
George M Smith, Gianluca Gallo
Mitochondria are dynamic organelles that undergo transport, fission and fusion. The three main functions of mitochondria are to generate ATP, buffer cytosolic calcium and generate reactive oxygen species. A large body of evidence indicates that mitochondria are either primary targets for neurological disease states and nervous system injury, or are major contributors to the ensuing pathologies. However, the roles of mitochondria in the development and regeneration of axons have just begun to be elucidated. Advances in the understanding of the functional roles of mitochondria in neurons had been largely impeded by insufficient knowledge regarding the molecular mechanisms that regulate mitochondrial transport, stalling, fission/fusion and a paucity of approaches to image and analyze mitochondria in living axons at the level of the single mitochondrion...
October 14, 2017: Developmental Neurobiology
https://www.readbyqxmd.com/read/29029833/interim-18-f-fdg-pet-ct-during-chemo-radiotherapy-in-the-management-of-oesophageal-cancer-patients-a-systematic-review
#13
REVIEW
Marta Cremonesi, Cristina Garibaldi, Robert Timmerman, Mahila Ferrari, Sara Ronchi, Chiara Maria Grana, Laura Travaini, Laura Gilardi, Anna Starzyńska, Delia Ciardo, Roberto Orecchia, Barbara Alicja Jereczek-Fossa, Maria Cristina Leonardi
Oesophageal cancer is an aggressive disease. The possibility to early stratify patients as responsive and non-responsive with a non-invasive method is extremely appealing. The uptake of Fluorodeoxyglucose ((18)F-FDG) in tumours, provided by positron emission tomography (PET) images, has been proved to be useful to assess the initial staging of the disease, recurrence, and response to chemotherapy and chemo-radiotherapy (CRT). In the last years, efforts have been focused on the possibility to use ad interim (18)F-FDG-PET/CT (PETint) to evaluate response during radiation therapy...
October 10, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29027318/imaging-and-pathology-features-to-predict-axillary-tumor-load-in-breast-cancer
#14
Pau Nicolau, Rocio Gamero, Ana Rodríguez-Arana, Francisco Plancarte, Rodrigo Alcántara, Ramon Carreras, Dolors Sabadell, Mar Vernet-Tomas
AIM: We investigated if imaging and pathology features could help to identify a high axillary tumor burden (ATB) in breast cancer patients, in order to individualize decisions on axillary lymph node (ALN) dissection (ALND). METHODS: We retrospectively analyzed patients primarily treated with surgery in our unit between 2011 and 2014. We divided the patients in two groups: low ATB (LATB) if ≤ 2 ALN were infiltrated and high ATB (HATB) if > 2 ALN were infiltrated...
October 13, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/29027063/inflammatory-myofibroblastic-tumors-of-the-breast-with-simultaneous-intracranial-lung-and-pancreas-involvement-ultrasonographic-findings-and-a-review-of-the-literature
#15
Mari Inoue, Tomoyuki Ohta, Hisashi Shioya, Shun Sato, Hiroyuki Takahashi, Norio Nakata, Chiaki Taniguchi, Megumi Hirano, Makiko Nishioka, Hironori Yamakawa
We encountered a case of inflammatory myofibroblastic tumor (IMT) of the breast with simultaneous intracranial, lung, and pancreas involvement. Here, we present the clinical imaging results and report the significance of sonographic findings of breast IMT along with a review of the literature. A 16-year-old girl with a history of subarachnoidal hemorrhage was admitted to our hospital due to tonic-clonic seizure. Computed tomography (CT) and magnetic resonance imaging (MRI) showed multiple intracranial, lung, and pancreas mass lesions and a solitary mass lesion in the right breast...
October 12, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29026940/advanced-bioanalytics-for-precision-medicine
#16
Aldo Roda, Elisa Michelini, Cristiana Caliceti, Massimo Guardigli, Mara Mirasoli, Patrizia Simoni
Precision medicine is a new paradigm that combines diagnostic, imaging, and analytical tools to produce accurate diagnoses and therapeutic interventions tailored to the individual patient. This approach stands in contrast to the traditional "one size fits all" concept, according to which researchers develop disease treatments and preventions for an "average" patient without considering individual differences. The "one size fits all" concept has led to many ineffective or inappropriate treatments, especially for pathologies such as Alzheimer's disease and cancer...
October 12, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29026663/ependymal-enhancement-on-magnetic-resonance-imaging-for-the-identification-of-high-grade-gliomas
#17
Muhammad Waqas, Muzna Iftikhar, Usman T Siddiqui, Syed Ather Enam
BACKGROUND: High-grade gliomas have high infiltrative potential and spread along white matter and blood vessels. Enhancement of ependymal lining on magnetic resonance imaging (MRI) is considered as a marker of parenchymal spread of disease. In this study, we aimed to assess the sensitivity, specificity, and positive and negative predictive values of ependymal enhancement (EE) for identification of high-grade glial tumors. METHODS: We reviewed preoperative MRI scans of 94 consecutive patients surgically treated for space occupying lesions of the brain for EE...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29024241/sentinel-node-biopsy-in-ductal-carcinoma-in-situ-of-the-breast-never-justified
#18
Luca Sorrentino, Alessandra Sartani, Daniela Bossi, Rosella Amadori, Manuela Nebuloni, Marta Truffi, Matteo Bonzini, Eliana Riggio, Diego Foschi, Fabio Corsi
Sentinel lymph node biopsy for ductal carcinoma in situ (DCIS) of the breast is not standard of care. However, nodal involvement for DCIS patients is reported. Aim of our study was to identify preoperative features predictive of nodal involvement in DCIS patients. We have retrospectively reviewed 175 patients with a preoperative diagnosis of DCIS following a vacuum-assisted breast biopsy, and undergoing surgery with sentinel node biopsy. Variables distribution was compared between patients upstaged to invasive cancer at final pathology and patients with a confirmed DCIS, and between positive vs negative sentinel node patients...
October 11, 2017: Breast Journal
https://www.readbyqxmd.com/read/29020937/the-prognostic-value-of-pretreatment-tumor-apparent-diffusion-coefficient-values-in-nasopharyngeal-carcinoma
#19
Dan-Fang Yan, Wen-Bao Zhang, Shan-Bao Ke, Feng Zhao, Sen-Xiang Yan, Qi-Dong Wang, Li-Song Teng
BACKGROUND: Diffusion-weighted MR imaging (DWI) has increasingly contributed to the management of nasopharyngeal carcinoma (NPC) patients. The objective of this paper was to explore the prognostic significance of apparent diffusion coefficient (ADC) values in 93 NPC patients. METHODS: This retrospective study included 93 newly diagnosed NPC patients. Pretreatment ADC values were determined and compared with patients' age, gender, alcohol intake, smoking, tumor volume, pathological type, tumor stage, and nodal stage...
October 11, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29020304/identification-of-a-targeted-and-testable-antiarrhythmic-therapy-for-long-qt-syndrome-type-2-using-a-patient-specific-cellular-model
#20
Ashish Mehta, Chrishan J A Ramachandra, Pritpal Singh, Anuja Chitre, Chong Hui Lua, Manuela Mura, Lia Crotti, Philip Wong, Peter J Schwartz, Massimiliano Gnecchi, Winston Shim
Aims: Loss-of-function mutations in the hERG gene causes long-QT syndrome type 2 (LQT2), a condition associated with reduced IKr current. Four different mutation classes define the molecular mechanisms impairing hERG. Among them, Class 2 mutations determine hERG trafficking defects. Lumacaftor (LUM) is a drug acting on channel trafficking already successfully tested for cystic fibrosis and its safety profile is well known. We hypothesize that LUM might rescue also hERG trafficking defects in LQT2 and exert anti-arrhythmic effects...
July 21, 2017: European Heart Journal
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