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Pulmonary molecular imaging

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https://www.readbyqxmd.com/read/28433709/pulmonary-pathobiology-induced-by-zinc-oxide-nanoparticles-in-mice-a-24-hour-and-28-day-follow-up-study
#1
Hsiao-Chi Chuang, Kai-Jen Chuang, Jen-Kun Chen, His-En Hua, Yen-Ling Shen, Wei-Neng Liao, Chii-Hong Lee, Chih-Hong Pan, Kuan-Yuan Chen, Kang-Yun Lee, Ta-Chih Hsiao, Tsun-Jen Cheng
Inhaled zinc oxide nanoparticles (ZnONPs) have high deposition rates in the alveolar region of the lungs; however, the adverse health effects of ZnONPs on the respiratory system are unclear. Herein, pathobiological responses of the respiratory system of mice that received intratracheal administration of ZnONPs were investigated by a combination of molecular and imaging (SPECT and CT) approaches. Also, normal BEAS-2B and adenocarcinoma A549 cells were used to confirm the results in mice. First, female BALB/c mice were administrated a series of doses of 20-nm ZnONPs and were compared to the phosphate-buffered saline control for 24-h and 28-day follow-up observations...
April 19, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28334868/pulmonary-metastasis-from-giant-cell-tumor-of-bone-clinical-outcome-prior-to-the-introduction-of-molecular-target-therapy
#2
Munehisa Kito, Seiichi Matusmoto, Keisuke Ae, Taisuke Tanizawa, Tabu Gokita, Hiroshi Kobayashi, Keiko Hayakawa, Yuki Funauchi
Objective: We analyzed the risk factors for pulmonary metastasis from giant cell tumor of bone and aimed to discuss their therapeutic strategy and appropriate follow-up period. Methods: We analyzed 141 patients of giant cell tumor of bone. The variables analyzed included age, gender, primary site, Campanacci grading, surgical treatment on the primary lesion, radiotherapy and local recurrence. Results: Pulmonary metastasis occurred in 12 patients...
March 4, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28331826/pulmonary-ground-glass-opacity-computed-tomography-features-histopathology-and-molecular-pathology
#3
REVIEW
Jian-Wei Gao, Stefania Rizzo, Li-Hong Ma, Xiang-Yu Qiu, Arne Warth, Nobuhiko Seki, Mizue Hasegawa, Jia-Wei Zou, Qian Li, Marco Femia, Tang-Feng Lv, Yong Song
The incidence of pulmonary ground-glass opacity (GGO) lesions is increasing as a result of the widespread use of multislice spiral computed tomography (CT) and the low-dose CT screening for lung cancer detection. Besides benign lesions, GGOs can be a specific type of lung adenocarcinomas or their preinvasive lesions. Evaluation of pulmonary GGO and investigation of the correlation between CT imaging features and lung adenocarcinoma subtypes or driver genes can be helpful in confirming the diagnosis and in guiding the clinical management...
February 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28330950/pressure-overload-leads-to-an-increased-accumulation-and-activity-of-mast-cells-in-the-right-ventricle
#4
Himal Luitel, Akylbek Sydykov, Yves Schymura, Argen Mamazhakypov, Wiebke Janssen, Kabita Pradhan, Astrid Wietelmann, Djuro Kosanovic, Bhola Kumar Dahal, Norbert Weissmann, Werner Seeger, Friedrich Grimminger, Hossein Ardeschir Ghofrani, Ralph Theo Schermuly
Right ventricular (RV) remodeling represents a complex set of functional and structural adaptations in response to chronic pressure or volume overload due to various inborn defects or acquired diseases and is an important determinant of patient outcome. However, the underlying molecular mechanisms remain elusive. We investigated the time course of structural and functional changes in the RV in the murine model of pressure overload-induced RV hypertrophy in C57Bl/6J mice. Using magnetic resonance imaging, we assessed the changes of RV structure and function at different time points for a period of 21 days...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28319500/clinical-response-profile-of-metastatic-advanced-pulmonary-neuroendocrine-tumors-to-peptide-receptor-radionuclide-therapy-with-177lu-dotatate
#5
Rahul V Parghane, Sanjay Talole, Kumar Prabhash, Sandip Basu
OBJECTIVES: The aims of this study were to perform multiparametric response assessment of metastatic/advanced pulmonary neuroendocrine tumors (NETs) to Lu-DOTATATE peptide receptor radionuclide therapy (PRRT) (clinical, biochemical, molecular/structural imaging, and survival assessment) and to study the relationship between response, mortality, and overall survival with dual-tracer molecular imaging parameters. METHODS: Twenty-two patients (6 women, 16 men; median age, 44 years; range, 16-72 years) of histopathologically proven pulmonary NETs with metastatic/advanced disease were included and analyzed retrospectively...
March 17, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28301228/the-evolving-classification-of-pulmonary-hypertension
#6
Michelle Foshat, Nahal Boroumand
CONTEXT: - An explosion of information on pulmonary hypertension has occurred during the past few decades. The perception of this disease has shifted from purely clinical to incorporate new knowledge of the underlying pathology. This transfer has occurred in light of advancements in pathophysiology, histology, and molecular medical diagnostics. OBJECTIVES: - To update readers about the evolving understanding of the etiology and pathogenesis of pulmonary hypertension and to demonstrate how pathology has shaped the current classification...
March 16, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28298912/heterologous-matrix-metalloproteinase-gene-promoter-activity-allows-in-vivo-real-time-imaging-of-bleomycin-induced-lung-fibrosis-in-transiently-transgenized-mice
#7
Fabio Franco Stellari, Francesca Ruscitti, Daniela Pompilio, Francesca Ravanetti, Giulia Tebaldi, Francesca Macchi, Andrea Elizabeth Verna, Gino Villetti, Gaetano Donofrio
Idiopathic pulmonary fibrosis is a very common interstitial lung disease derived from chronic inflammatory insults, characterized by massive scar tissue deposition that causes the progressive loss of lung function and subsequent death for respiratory failure. Bleomycin is used as the standard agent to induce experimental pulmonary fibrosis in animal models for the study of its pathogenesis. However, to visualize the establishment of lung fibrosis after treatment, the animal sacrifice is necessary. Thus, the aim of this study was to avoid this limitation by using an innovative approach based on a double bleomycin treatment protocol, along with the in vivo images analysis of bleomycin-treated mice...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28290648/deep-venous-thrombosis-and-pulmonary-embolism-current-therapy
#8
Jason Wilbur, Brian Shian
Pulmonary embolism and deep venous thrombosis are the two most important manifestations of venous thromboembolism (VTE), which is the third most common life-threatening cardiovascular disease in the United States. Anticoagulation is the mainstay of VTE treatment. Most patients with deep venous thrombosis or low-risk pulmonary embolism can be treated in the outpatient setting with low-molecular-weight heparin and a vitamin K antagonist (warfarin) or direct-acting oral anticoagulants. Inpatient treatment of VTE begins with parenteral agents, preferably low-molecular-weight heparin...
March 1, 2017: American Family Physician
https://www.readbyqxmd.com/read/28280112/lipidomic-characterization-and-localization-of-phospholipids-in-the-human-lung
#9
Karin A Zemski Berry, Robert C Murphy, Beata Kosmider, Robert J Mason
Lipids play a central role in lung physiology and pathology, however a comprehensive lipidomic characterization of human pulmonary cells relevant to disease has not been performed. The cells involved in lung host defense, including alveolar macrophages (AM), bronchial epithelial cells (BEC), and alveolar type II cells (ATII), were isolated from human subjects and lipidomic analysis by LC-MS and LC-MS/MS was performed. Additionally, pieces of lung tissue from the same donors were analyzed by MALDI imaging mass spectrometry (IMS) in order to determine lipid localization in the tissue...
March 9, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28263385/intraoperative-near-infrared-fluorescence-imaging-targeting-folate-receptors-identifies-lung-cancer-in-a-large-animal-model
#10
Jane J Keating, Jeffrey J Runge, Sunil Singhal, Sarah Nims, Ollin Venegas, Amy C Durham, Gary Swain, Shuming Nie, Philip S Low, David E Holt
BACKGROUND: Complete tumor resection is the most important predictor of patient survival with non-small cell lung cancer. Methods for intraoperative margin assessment after lung cancer excision are lacking. This study evaluated near-infrared (NIR) intraoperative imaging with a folate-targeted molecular contrast agent (OTL0038) for the localization of primary lung adenocarcinomas, lymph node sampling, and margin assessment. METHODS: Ten dogs with lung cancer underwent either video-assisted thoracoscopic surgery or open thoracotomy and tumor excision after an intravenous injection of OTL0038...
May 15, 2017: Cancer
https://www.readbyqxmd.com/read/28237630/-18-f-fluoro-2-deoxyglucose-pet-informs-neutrophil-accumulation-and-activation-in-lipopolysaccharide-induced-acute-lung-injury
#11
Rosana S Rodrigues, Fernando A Bozza, Christopher J Hanrahan, Li-Ming Wang, Qi Wu, John M Hoffman, Guy A Zimmerman, Kathryn A Morton
INTRODUCTION: Molecular imaging of the earliest events related to the development of acute lung injury (ALI)/acute respiratory distress syndrome (ARDS) could facilitate therapeutic development and patient management. We previously reported that (18)F-fluoro-2-deoxyglucose ((18)F-FDG) PET identifies ALI/ARDS prior to radiographic abnormalities. The purpose of this study was to establish the time courses of (18)F-FDG uptake, edema and neutrophil recruitment in an endotoxin-induced acute lung injury model and to examine molecular events required for (14)C-2DG uptake in activated neutrophils...
May 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/28236024/molecular-imaging-of-the-human-pulmonary-vascular-endothelium-in-pulmonary-hypertension-a-phase-ii-safety-and-proof-of-principle-trial
#12
François Harel, David Langleben, Steve Provencher, Alain Fournier, Vincent Finnerty, Quang T Nguyen, Myriam Letourneau, Xavier Levac, Gad Abikhzer, Jean Guimond, Asmaa Mansour, Marie-Claude Guertin, Jocelyn Dupuis
PURPOSE: The adrenomedullin receptor is densely expressed in the pulmonary vascular endothelium. PulmoBind, an adrenomedullin receptor ligand, was developed for molecular diagnosis of pulmonary vascular disease. We evaluated the safety of PulmoBind SPECT imaging and its capacity to detect pulmonary vascular disease associated with pulmonary hypertension (PH) in a human phase II study. METHODS: Thirty patients with pulmonary arterial hypertension (PAH, n = 23) or chronic thromboembolic PH (CTEPH, n = 7) in WHO functional class II (n = 26) or III (n = 4) were compared to 15 healthy controls...
February 24, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28149626/clinical-implications-of-genetic-heterogeneity-in-multifocal-pulmonary-adenocarcinomas
#13
COMMENT
Tawee Tanvetyanon, Theresa A Boyle
Multifocal pulmonary adenocarcinomas are increasingly encountered in clinical practice, in part due to the increased availability and improvement in the thoracic imaging. Recognized as a distinct entity in the upcoming 8(th) edition of American Joint Commission on Cancer (AJCC) staging system, multifocal adenocarcinomas exhibit several unique features such as the characteristic appearance of multiple ground glass opacities or nodules in computerized tomography (CT). Recent studies have suggested that the vast majority of these malignant lesions are genetically independent even when occurring synchronously in a single patient...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28145528/lipidomics-reveals-dramatic-lipid-compositional-changes-in-the-maturing-postnatal-lung
#14
Sydney E Dautel, Jennifer E Kyle, Geremy Clair, Ryan L Sontag, Karl K Weitz, Anil K Shukla, Son N Nguyen, Young-Mo Kim, Erika M Zink, Teresa Luders, Charles W Frevert, Sina A Gharib, Julia Laskin, James P Carson, Thomas O Metz, Richard A Corley, Charles Ansong
Lung immaturity is a major cause of morbidity and mortality in premature infants. Understanding the molecular mechanisms driving normal lung development could provide insights on how to ameliorate disrupted development. While transcriptomic and proteomic analyses of normal lung development have been previously reported, characterization of changes in the lipidome is lacking. Lipids play significant roles in the lung, such as dipalmitoylphosphatidylcholine in pulmonary surfactant; however, many of the roles of specific lipid species in normal lung development, as well as in disease states, are not well defined...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28066672/intraoperative-molecular-imaging-to-identify-lung-adenocarcinomas
#15
REVIEW
Andrew D Newton, Gregory T Kennedy, Jarrod D Predina, Philip S Low, Sunil Singhal
Intraoperative molecular imaging is a promising new technology with numerous applications in lung cancer surgery. Accurate identification of small nodules and assessment of tumor margins are two challenges in pulmonary resections for cancer, particularly with increasing use of video-assisted thoracoscopic surgery (VATS). One potential solution to these problems is intraoperative use of a fluorescent contrast agent to improve detection of cancer cells. This technology requires both a targeted fluorescent dye that will selectively accumulate in cancer cells and a specialized imaging system to detect the cells...
October 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28053515/gender-differences-in-the-t-cell-profiles-of-the-airways-in-copd-patients-associated-with-clinical-phenotypes
#16
Helena Forsslund, Mingxing Yang, Mikael Mikko, Reza Karimi, Sven Nyrén, Benita Engvall, Johan Grunewald, Heta Merikallio, Riitta Kaarteenaho, Jan Wahlström, Åsa M Wheelock, C Magnus Sköld
T lymphocytes are believed to play an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD). How T cells are recruited to the lungs and contribute to the inflammatory process is largely unknown. COPD is a heterogeneous disease, and discriminating disease phenotypes based on distinct molecular and cellular pathways may provide new approaches for individualized diagnosis and therapies. Bronchoalveolar lavage (BAL) and blood samples were obtained from 40 never-smokers, 40 smokers with normal lung function, and 38 COPD patients...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28043583/radiographic-manifestations-of-tuberculosis-in-hiv-positive-patients-correlation-with-cd4-t-cell-count
#17
Mehrdad Bakhshayesh-Karam, Payam Tabarsi, Seyed Mehdi Mirsaiedi, Majid Valiollahpour Amiri, Soheila Zahirifard, Seyed Davood Mansoori, Mohammad Reza Masjedi, Ali Akbar Velayati
BACKGROUND: Observations on Tuberculosis/HIV co-infection in addition to epidemiologic molecular studies have recently provided strong evidence for the state of immune system as the major determinant of the TB imaging spectrum. However, the presence of any correlation between radiographic findings and the degree of immunosuppression in HIV+ patients still remains controversial. The present study aimed to investigate the TB radiographic manifestation in HIV+ patients and its relationship to the CD4 cell count...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28040141/prenatal-diagnosis-of-smith-magenis-syndrome-in-two-fetuses-with-increased-nuchal-translucency-mild-lateral-ventriculomegaly-and-congenital-heart-defects
#18
Ting-Ying Lei, Ru Li, Fang Fu, Jun-Hui Wan, Yong-Ling Zhang, Xiang-Yi Jing, Can Liao
OBJECTIVE: Smith-Magenis syndrome (SMS) is a multiple congenital anomalies/mental retardation disorder characterized by an interstitial deletion involving chromosome 17p11.2 containing the retinoic acid-induced 1 (RAI1) gene or due to mutation of RAI1. Few cases have been reported in the medical literature regarding prenatal diagnosis of SMS. We report on the prenatal diagnosis of SMS in two fetuses with increased nuchal translucency (NT), mild lateral ventriculomegaly, and congenital heart defects by whole-genome and high-resolution chromosome microarray analysis (CMA)...
December 2016: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27932290/the-diagnosis-of-idiopathic-pulmonary-fibrosis-current-and-future-approaches
#19
REVIEW
Fernando J Martinez, Alison Chisholm, Harold R Collard, Kevin R Flaherty, Jeffrey Myers, Ganesh Raghu, Simon L F Walsh, Eric S White, Luca Richeldi
With the recent development of two effective treatments for patients with idiopathic pulmonary fibrosis, an accurate diagnosis is crucial. The traditional approach to diagnosis emphasises the importance of thorough clinical and laboratory evaluations to exclude secondary causes of disease. High-resolution CT is a critical initial diagnostic test and acts as a tool to identify patients who should undergo surgical lung biopsy to secure a definitive histological diagnosis of usual interstitial pneumonia pattern...
January 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/27882143/expression-of-connexin-43-ion-channels-and-ca-2-handling-proteins-in-rat-pulmonary-vein-cardiomyocytes
#20
Yaqiong Xiao, Xue Cai, Andrew Atkinson, Sunil Jit Logantha, Mark Boyett, Halina Dobrzynski
Atrial fibrillation (AF) is the most common cardiac arrhythmia. AF is thought to be triggered by ectopic beats, originating primarily in the myocardial sleeves surrounding the pulmonary veins (PVs). The mechanisms underlying these cardiac arrhythmias remain unclear. To investigate this, frozen sections of heart and lung tissue from adult rats without arrhythmia were obtained in different planes, stained with Masson's trichrome, and immunolabeled for connexin 43 (Cx43), caveolin-3 (Cav3), hyperpolarization-activated cyclic nucleotide-gated channel 4 (HCN4), Nav1...
November 2016: Experimental and Therapeutic Medicine
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