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https://www.readbyqxmd.com/read/28617548/bioinformatic-analysis-of-prognostic-value-of-arap3-in-breast-cancer-and-the-associated-signaling-pathways
#1
J-J Han, B-R Du, C-H Zhang
OBJECTIVE: In this study, we tried to pool previous annotated genomic data to assess the association between ARAP3 expression and metastatic relapse (MR) risk in patients with breast cancer. Moreover, we also investigated the signaling pathways in which ARAP3 might be involved in breast cancer. MATERIALS AND METHODS: The raw microarray data (GDS5666) that compared gene transcriptional profiles of 4T1 derived lung-aggressive explant and primary tumor explant were reanalyzed to identify the dysregulated genes...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28601174/thoracic-neoplasms-in-children-contemporary-perspectives-and-imaging-assessment
#2
REVIEW
Matthew A Zapala, Victor M Ho-Fung, Edward Y Lee
This article focuses on commonly encountered primary lung, airway, mediastinal, and chest wall neoplasms that occur in the pediatric population. Although primary pediatric thoracic neoplasms are rare, imaging is critical in their diagnostic work-up. An overview of the latest imaging techniques specific to evaluate these pediatric thoracic neoplasms is presented across the spectrum of modalities from radiography to PET/MR imaging. In addition, the characteristic imaging appearances of these pediatric primary thoracic neoplasms are discussed with an emphasis on what the radiologist needs to know in routine clinical practice...
July 2017: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/28594918/obesity-metabolic-factors-and-risk-of-different-histological-types-of-lung-cancer-a-mendelian-randomization-study
#3
Robert Carreras-Torres, Mattias Johansson, Philip C Haycock, Kaitlin H Wade, Caroline L Relton, Richard M Martin, George Davey Smith, Demetrius Albanes, Melinda C Aldrich, Angeline Andrew, Susanne M Arnold, Heike Bickeböller, Stig E Bojesen, Hans Brunnström, Jonas Manjer, Irene Brüske, Neil E Caporaso, Chu Chen, David C Christiani, W Jay Christian, Jennifer A Doherty, Eric J Duell, John K Field, Michael P A Davies, Michael W Marcus, Gary E Goodman, Kjell Grankvist, Aage Haugen, Yun-Chul Hong, Lambertus A Kiemeney, Erik H F M van der Heijden, Peter Kraft, Mikael B Johansson, Stephen Lam, Maria Teresa Landi, Philip Lazarus, Loïc Le Marchand, Geoffrey Liu, Olle Melander, Sungshim L Park, Gad Rennert, Angela Risch, Eric B Haura, Ghislaine Scelo, David Zaridze, Anush Mukeriya, Milan Savić, Jolanta Lissowska, Beata Swiatkowska, Vladimir Janout, Ivana Holcatova, Dana Mates, Matthew B Schabath, Hongbing Shen, Adonina Tardon, M Dawn Teare, Penella Woll, Ming-Sound Tsao, Xifeng Wu, Jian-Min Yuan, Rayjean J Hung, Christopher I Amos, James McKay, Paul Brennan
BACKGROUND: Assessing the relationship between lung cancer and metabolic conditions is challenging because of the confounding effect of tobacco. Mendelian randomization (MR), or the use of genetic instrumental variables to assess causality, may help to identify the metabolic drivers of lung cancer. METHODS AND FINDINGS: We identified genetic instruments for potential metabolic risk factors and evaluated these in relation to risk using 29,266 lung cancer cases (including 11,273 adenocarcinomas, 7,426 squamous cell and 2,664 small cell cases) and 56,450 controls...
2017: PloS One
https://www.readbyqxmd.com/read/28590295/68ga-psma-pet-mr-positive-peritoneal-metastasis-in-the-falciform-ligament-in-recurrent-prostate-cancer
#4
Benedikt Kranzbühler, Sébastien Tran, Thomas Zilli, Irene A Burger
Synchronous or metachronous metastases develop in approximately one third of all prostate cancer (PCa) patients. Main sites of metastasis include lymph nodes, bone, lung and liver. Secondary peritoneal carcinomatosis is very rare in PCa, with only a few published cases. Ga-PSMA PET-based imaging is a promising tool for staging and restaging PCa. We report a case of Ga-PSMA PET/MR-positive peritoneal metastasis as site of primary relapse after definitive PCa treatment in a 58-year-old man with a prostate-specific antigen of 30 ng/mL at time of the study...
June 5, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28570032/free-breathing-pediatric-chest-mri-performance-of-self-navigated-golden-angle-ordered-conical-ultrashort-echo-time-acquisition
#5
Evan J Zucker, Joseph Y Cheng, Anshul Haldipur, Michael Carl, Shreyas S Vasanawala
PURPOSE: To assess the feasibility and performance of conical k-space trajectory free-breathing ultrashort echo time (UTE) chest magnetic resonance imaging (MRI) versus four-dimensional (4D) flow and effects of 50% data subsampling and soft-gated motion correction. MATERIALS AND METHODS: Thirty-two consecutive children who underwent both 4D flow and UTE ferumoxytol-enhanced chest MR (mean age: 5.4 years, range: 6 days to 15.7 years) in one 3T exam were recruited...
June 1, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28562622/suv-quantification-of-physiological-lung-tissue-in-an-integrated-pet-mr-system-impact-of-lung-density-and-bone-tissue
#6
Ferdinand Seith, Holger Schmidt, Sergios Gatidis, Ilja Bezrukov, Christina Schraml, Christina Pfannenberg, Christian la Fougère, Konstantin Nikolaou, Nina Schwenzer
PURPOSE: The aim of the study was to investigate the influence of lung density changes as well as bone proximity on the attenuation correction of lung standardized uptake values (SUVs). METHODS AND MATERIALS: 15 patients with mostly oncologic diseases were examined in 18F-FDG-PET/CT and subsequently in a fully integrated PET/MR scanner. From each PET dataset acquired in PET/MR, four different PET reconstructions were computed using different attenuation maps (μ-maps): i) CT-based μ-map (gold standard); ii) CT-based μ-map in which the linear attenuation coefficients (LAC) of the lung tissue was replaced by the lung LAC from the MR-based segmentation method; iii) based on reconstruction ii), the LAC of bone structures was additionally replaced with the LAC from the MR-based segmentation method; iv) the vendor-provided MR-based μ-map (segmentation-based method)...
2017: PloS One
https://www.readbyqxmd.com/read/28550025/30-years-of-the-mineralocorticoid-receptor-mineralocorticoid-receptor-null-mice-informing-cell-type-specific-roles
#7
REVIEW
Timothy J Cole, Morag J Young
The mineralocorticoid receptor (MR) mediates the actions of two important adrenal corticosteroid hormones, aldosterone and cortisol. The cell signalling roles of the MR in vivo have expanded enormously since the cloning of human MR gene 30 years ago and the first MR gene knockout in mice nearly 20 years ago. Complete ablation of the MR revealed important roles postnatally for regulation of kidney epithelial functions, with MR-null mice dying 1-2 weeks postnatally from renal salt wasting and hyperkalaemia, with elevated plasma renin and aldosterone...
July 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28543069/real-time-dynamic-mr-image-reconstruction-using-compressed-sensing-and-principal-component-analysis-cs-pca-demonstration-in-lung-tumor-tracking
#8
Bryson Dietz, Eugene Yip, Jihyun Yun, B Gino Fallone, Keith Wachowicz
PURPOSE: This work presents a real-time dynamic image reconstruction technique, that combines compressed sensing and principal component analysis (CS-PCA), to achieve real-time adaptive radiotherapy with the use of a linac-magnetic resonance imaging system. METHODS: Six retrospective fully sampled dynamic data sets of patients diagnosed with non-small cell lung cancer were used to investigate the CS-PCA algorithm. Using a database of fully sampled k-space, principal components (PC's) were calculated to aid in the reconstruction of undersampled images...
May 19, 2017: Medical Physics
https://www.readbyqxmd.com/read/28536993/stereotactic-radiosurgery-for-focal-leptomeningeal-disease-in-patients-with-brain-metastases
#9
Amparo Wolf, Bernadine Donahue, Joshua S Silverman, Abraham Chachoua, Jean K Lee, Douglas Kondziolka
Leptomeningeal disease (LMD) is well described in patients with brain metastases, presenting symptomatically in approximately 5% of patients. Conventionally, the presence of LMD is an indication for whole brain radiation therapy (WBRT) and not suitable for stereotactic radiosurgery (SRS). The purpose of the study was to evaluate the local control and overall survival of patients who underwent SRS to focal LMD. We reviewed our prospective registry and identified 32 brain metastases patients with LMD, from a total of 465 patients who underwent SRS between 2013 and 2015...
May 23, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28529640/lung-cancer-targeting-peptides-with-multi-subtype-indication-for-combinational-drug-delivery-and-molecular-imaging
#10
Yi-Hsuan Chi, Jong-Kai Hsiao, Ming-Huang Lin, Chen Chang, Chun-Hsin Lan, Han-Chung Wu
Lung cancer is the leading cause of cancer-related death worldwide. Most targeted drugs approved for lung cancer treatment are tyrosine kinase inhibitors (TKIs) directed against EGFR or ALK, and are used mainly for adenocarcinoma. At present, there is no effective or tailored targeting agent for large cell carcinoma (LCC) or small cell lung cancer (SCLC). Therefore, we aimed to identify targeting peptides with diagnostic and therapeutic utility that possess broad subtype specificity for SCLC and non-small cell lung cancer (NSCLC)...
2017: Theranostics
https://www.readbyqxmd.com/read/28516043/quantification-of-regional-deformation-of-the-lungs-by-non-rigid-registration-of-three-dimensional-contrast-enhanced-magnetic-resonance-imaging
#11
Jiaxin Shao, Peng Hu
BACKGROUND: Assessment of lung function is vital for the diagnosis of a variety of pathological conditions. Research has been proposed to study pulmonary mechanics and kinematics using two-dimensional (2D) magnetic resonance imaging (MRI). This allows estimation of regional lung tissue mechanics but is limited to 2D information. An approach based on three-dimensional (3D) contrast-enhanced MR angiogram of pulmonary blood vessels and a non-rigid image registration technique is proposed for quantification of lung regional deformations, which can potentially be used for assessment of pulmonary parenchymal mechanics and regional ventilation for disease diagnosis without ionizing radiation...
April 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28497995/a-rare-case-of-small-cell-carcinoma-of-lung-with-intraventricular-metastasis
#12
Hao Chen, Hafiz Khuram Raza, Hongjuan Shi, Jienan Zhu, Guiyun Cui
Our case report involves a Chinese patient who was presented to our hospital with the chief complaint of dizziness and double vision for one week. He was diagnosed with small cell carcinoma of lung in the past. The patient undertook various test at our hospital. His MR scan revealed an intraventricular metastasis from small cell carcinoma of lung which is very rare. We have analyzed the clinical data of this patient and related literature. We report this case to increase the awareness of this rare metastasis of small cell carcinoma of lung...
May 12, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28497643/three-dimensional-ultrashort-echo-time-mri-and-short-t2-images-generated-from-subtraction-for-determination-of-tumor-burden-in-lung-cancer-preclinical-investigation-in-transgenic-mice
#13
Andreas Müller, Philippe Jagoda, Peter Fries, Stefan Gräber, Robert Bals, Arno Buecker, Christopher Jungnickel, Christoph Beisswenger
PURPOSE: To investigate the potential of 3D ultrashort echo time MRI and short T2 images generated by subtraction for determination of total tumor burden in lung cancer. METHODS: As an animal model of spontaneously developing non-small cell lung cancer, the K-rasLA1 transgenic mouse was used. Three-dimensional MR imaging was performed with radial k-space acquisition and echo times of 20 µs and 1 ms. For investigation of the short T2 component in the recorded signal, subtraction images were generated from these data sets and used for consensus identification of tumors...
May 11, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28492512/aldosterone-and-mineralocorticoid-receptors-physiology-and-pathophysiology
#14
John W Funder
Aldosterone is a uniquely terrestrial hormone, first appearing in lungfish, which have both gills and lungs. Mineralocorticoid receptors (MRs), on the other hand, evolved much earlier, and are found in cartilaginous and bony fish, presumptive ligand cortisol. MRs have equivalent high affinity for aldosterone, progesterone, and cortisol; in epithelia, despite much higher cortisol circulating levels, aldosterone selectively activates MRs by co-expression of the enzyme 11β-hydroxysteroid dehydrogenase, Type 11...
May 11, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28485324/a-novel-porcine-model-of-septic-shock-induced-by-acute-respiratory-distress-syndrome-due-to-methicillin-resistant-staphylococcus-aureus
#15
Shuo Wang, Jun-Yu Wang, Tao Wang, Chen-Chen Hang, Rui Shao, Chun-Sheng Li
BACKGROUND: Sepsis is one of the main causes of mortality in critically ill patients following progression to septic shock. To investigate the pathophysiologic changes of sepsis, we developed a novel porcine model of septic shock induced by acute respiratory distress syndrome (ARDS) due to methicillin-resistant Staphylococcus aureus(MRSA) pneumonia. METHODS: Twenty-six male Landraces (Lvyuanweiye, Beijing, China) weighing 30 ± 2 kg were divided into four groups: sham group (SH; n = 5); cotton smoke inhalation group (SM; n = 6); MRSA pneumonia group (MR; n = 6); and septic shock group with cotton smoke inhalation + MRSA pneumonia (SS; n = 9)...
May 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28480541/response-assessment-of-stereotactic-body-radiation-therapy-using-dynamic-contrast-enhanced-integrated-mr-pet-in-non-small-cell-lung-cancer-patients
#16
Yu-Sen Huang, Jenny Ling-Yu Chen, Feng-Ming Hsu, Jei-Yie Huang, Wei-Chun Ko, Yi-Chang Chen, Fu-Shan Jaw, Ruoh-Fang Yen, Yeun-Chung Chang
PURPOSE: To evaluate the response in patients undergoing SBRT using dynamic contrast-enhanced (DCE) integrated magnetic resonance positron emission tomography (MR-PET). Stereotactic body radiation therapy (SBRT) is efficacious as a front-line local treatment for non-small cell lung cancer (NSCLC). MATERIALS AND METHODS: We prospectively enrolled 19 lung tumors in 17 nonmetastatic NSCLC patients who were receiving SBRT as a primary treatment. They underwent DCE-integrated 3T MR-PET before and 6 weeks after SBRT...
May 8, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28471738/regional-ventilation-changes-in-the-lung-treatment-response-mapping-by-using-hyperpolarized-gas-mr-imaging-as-a-quantitative-biomarker
#17
Felix C Horn, Helen Marshall, Guilhem J Collier, Richard Kay, Salman Siddiqui, Christopher E Brightling, Juan Parra-Robles, Jim M Wild
Purpose To assess the magnitude of regional response to respiratory therapeutic agents in the lungs by using treatment response mapping (TRM) with hyperpolarized gas magnetic resonance (MR) imaging. TRM was used to quantify regional physiologic response in adults with asthma who underwent a bronchodilator challenge. Materials and Methods This study was approved by the national research ethics committee and was performed with informed consent. Imaging was performed in 20 adult patients with asthma by using hyperpolarized helium 3 ((3)He) ventilation MR imaging...
May 4, 2017: Radiology
https://www.readbyqxmd.com/read/28459800/t2-weighted-4d-magnetic-resonance-imaging-for-application-in-magnetic-resonance-guided-radiotherapy-treatment-planning
#18
Joshua N Freedman, David J Collins, Hannah Bainbridge, Christopher M Rank, Simeon Nill, Marc Kachelrieß, Uwe Oelfke, Martin O Leach, Andreas Wetscherek
OBJECTIVES: The aim of this study was to develop and verify a method to obtain good temporal resolution T2-weighted 4-dimensional (4D-T2w) magnetic resonance imaging (MRI) by using motion information from T1-weighted 4D (4D-T1w) MRI, to support treatment planning in MR-guided radiotherapy. MATERIALS AND METHODS: Ten patients with primary non-small cell lung cancer were scanned at 1.5 T axially with a volumetric T2-weighted turbo spin echo sequence gated to exhalation and a volumetric T1-weighted stack-of-stars spoiled gradient echo sequence with golden angle spacing acquired in free breathing...
April 28, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28453911/validation-of-biomechanical-deformable-image-registration-in-the-abdomen-thorax-and-pelvis-in-a-commercial-radiotherapy-treatment-planning-system
#19
Michael Velec, Joanne L Moseley, Stina Svensson, Björn Hårdemark, David A Jaffray, Kristy K Brock
PURPOSE: The accuracy of deformable image registration tools can vary widely between imaging modalities and specific implementations of the same algorithms. A biomechanical model-based algorithm initially developed in-house at an academic institution was translated into a commercial radiotherapy treatment planning system and validated for multiple imaging modalities and anatomic sites. METHODS: Biomechanical deformable registration (Morfeus) is a geometry driven algorithm based on the finite element method...
April 28, 2017: Medical Physics
https://www.readbyqxmd.com/read/28448232/dynamic-contrast-enhanced-mr-imaging-parameters-in-bone-metastases-from-non-small-cell-lung-cancer-comparison-between-lesions-with-and-lesions-without-epidermal-growth-factor-receptor-mutation-in-primary-lung-cancer
#20
Hyun Su Kim, Young Cheol Yoon, Soyi Kwon, Ji Hyun Lee, Soohyun Ahn, Hyeon Seon Ahn
Purpose To compare dynamic contrast material-enhanced (DCE) magnetic resonance (MR) imaging parameters between metastatic bone lesions with and without the epidermal growth factor receptor (EGFR) mutation in consecutive patients with primary non-small cell lung cancer (NSCLC). Materials and Methods This study was approved by the institutional review board. Forty-seven patients with NSCLC and a confirmed EGFR mutation status (27 patients were positive and 26 were negative for EGFR mutation), who underwent DCE MR imaging for bone metastases between November 2012 and March 2016, were included in this study...
April 27, 2017: Radiology
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