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https://www.readbyqxmd.com/read/28100891/reverse-right-ventricular-remodeling-after-lung-transplantation-in-patients-with-pulmonary-arterial-hypertension-under-combination-therapy-of-targeted-medical-drugs
#1
Toshihiro Sarashina, Kazufumi Nakamura, Satoshi Akagi, Takahiro Oto, Hiroki Oe, Kentaro Ejiri, Koji Nakagawa, Nobuhiro Nishii, Hiromi Matsubara, Motomu Kobayashi, Hiroshi Morimatsu, Shinichiro Miyoshi, Hiroshi Ito
BACKGROUND: Patients with pulmonary arterial hypertension (PAH) are currently treated with combination therapy of PAH-targeted drugs. Reverse right ventricular (RV) remodeling after lung transplantation (LTx) in patients with end-stage PAH despite combination therapy of PAH-targeted drugs has not been fully elucidated.Methods and Results:A total of 136 patients, including 32 with PAH, underwent LTx from 1998 to 2014. We enrolled 12 consecutive patients with PAH treated with combination therapy of PAH-targeted drugs who underwent LTx and retrospectively analyzed the temporal and serial changes in hemodynamics and echocardiography before LTx and at 3 and 12 months after LTx...
January 18, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28100330/-protective-effects-of-heat-shock-protein-70-against-hypoxic-pulmonary-hypertension-in-neonatal-rats
#2
Le Wang, Hai-Yan Wu, Ming-Xia Li
OBJECTIVE: To investigate the protective effect of heat shock protein 70 (HSP70) against hypoxic pulmonary hypertension (HPH) in neonatal rats. METHODS: A total of 128 neonatal rats were randomly divided into blank control group, HPH model group, empty virus group, and HSP70 group, with 32 rats in each group. Before the establishment of an HPH model, the rats in the blank control group and HPH model group were given caudal vein injection of 5 μL sterile saline, those in the empty virus group were given caudal vein injection of 5 μL Ad-GFP (1 010 PFU/mL), and those in the HSP70 group were given caudal vein injection of 5 μL Ad-HSP70 (1 010 PFU/mL)...
January 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28099079/lymphangioleiomyomatosis-a-monogenic-model-of-malignancy
#3
Vera P Krymskaya, Francis X McCormack
Lymphangioleiomyomatosis (LAM) is a rare, low-grade, metastasizing neoplasm that arises from an unknown source, spreads via the lymphatics, and targets the lungs. All pulmonary structures become infiltrated with benign-appearing spindle and epithelioid cells (LAM cells) that express smooth-muscle and melanocyte-lineage markers, harbor mTOR-activating mutations in tuberous sclerosis complex (TSC) genes, and recruit abundant stromal cells. Elaboration of lymphangiogenic growth factors and matrix remodeling enzymes by LAM cells enables their access to lymphatic channels and likely drives the cystic lung remodeling that often culminates in respiratory failure...
January 14, 2017: Annual Review of Medicine
https://www.readbyqxmd.com/read/28098761/pancreatic-neuroendocrine-neoplasms-basic-biology-current-treatment-strategies-and-prospects-for-the-future
#4
REVIEW
Akihiro Ohmoto, Hirofumi Rokutan, Shinichi Yachida
Pancreatic neuroendocrine neoplasms (pNENs) are rare tumors accounting for only 1%-2% of all pancreatic tumors. pNENs are pathologically heterogeneous and are categorized into three groups (neuroendocrine tumor: NET G1, NET G2; and neuroendocrine carcinoma: NEC) on the basis of the Ki-67 proliferation index and the mitotic count according to the 2010 World Health Organization (WHO) classification of gastroenteropancreatic NENs. NEC in this classification includes both histologically well-differentiated and poorly differentiated subtypes, and modification of the WHO 2010 classification is under discussion based on genetic and clinical data...
January 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28094579/expression-profile-of-the-integrin-receptor-subunits-in-the-guinea-pig-sclera
#5
Kevin K Wang, Ravikanth Metlapally, Christine F Wildsoet
PURPOSE: The ocular dimensional changes in myopia reflect increased scleral remodeling, and in high myopia, loss of scleral integrity leads to biomechanical weakening and continued scleral creep. As integrins, a type of cell surface receptors, have been linked to scleral remodeling, they represent potential targets for myopia therapies. As a first step, this study aimed to characterize the integrin subunits at the messenger RNA level in the sclera of the guinea pig, a more recently added but increasingly used animal model for myopia research...
January 17, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28091774/development-remodeling-and-regeneration-of-the-lung-coping-with-the-structural-and-functional-challenges-of-breathing
#6
EDITORIAL
Christian Mühlfeld, Matthias Ochs
No abstract text is available yet for this article.
January 16, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28091773/the-nervous-system-of-airways-and-its-remodeling-in-inflammatory-lung-diseases
#7
REVIEW
Katrin Julia Audrit, Lucas Delventhal, Öznur Aydin, Christina Nassenstein
Inflammatory lung diseases are associated with bronchospasm, cough, dyspnea and airway hyperreactivity. The majority of these symptoms cannot be primarily explained by immune cell infiltration. Evidence has been provided that vagal efferent and afferent neurons play a pivotal role in this regard. Their functions can be altered by inflammatory mediators that induce long-lasting changes in vagal nerve activity and gene expression in both peripheral and central neurons, providing new targets for treatment of pulmonary inflammatory diseases...
January 14, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28090302/three-dimensional-micro-computed-tomography-analysis-of-the-lung-vasculature-and-differential-adipose-proteomics-in-the-sugen-hypoxia-rat-model-of-pulmonary-arterial-hypertension
#8
Kelly J Shields, Kostas Verdelis, Michael J Passineau, Erin M Faight, Lee Zourelias, Changgong Wu, Rong Chong, Raymond L Benza
Pulmonary arterial hypertension (PAH) is a rare disease characterized by significant vascular remodeling. The obesity epidemic has produced great interest in the relationship between small visceral adipose tissue depots producing localized inflammatory conditions, which may link metabolism, innate immunity, and vascular remodeling. This study used novel micro computed tomography (microCT) three-dimensional modeling to investigate the degree of remodeling of the lung vasculature and differential proteomics to determine small visceral adipose dysfunction in rats with severe PAH...
December 2016: Pulmonary Circulation
https://www.readbyqxmd.com/read/28090288/expression-profiling-elucidates-a-molecular-gene-signature-for-pulmonary-hypertension-in-sarcoidosis
#9
Sunit Singla, Tong Zhou, Kamran Javaid, Taimur Abbasi, Nancy Casanova, Wei Zhang, Shwu-Fan Ma, Michael S Wade, Imre Noth, Nadera J Sweiss, Joe G N Garcia, Roberto F Machado
Pulmonary hypertension (PH), when it complicates sarcoidosis, carries a poor prognosis, in part because it is difficult to detect early in patients with worsening respiratory symptoms. Pathogenesis of sarcoidosis occurs via incompletely characterized mechanisms that are distinct from the mechanisms of pulmonary vascular remodeling well known to occur in conjunction with other chronic lung diseases. To address the need for a biomarker to aid in early detection as well as the gap in knowledge regarding the mechanisms of PH in sarcoidosis, we used genome-wide peripheral blood gene expression analysis and identified an 18-gene signature capable of distinguishing sarcoidosis patients with PH (n = 8), sarcoidosis patients without PH (n = 17), and healthy controls (n = 45)...
December 2016: Pulmonary Circulation
https://www.readbyqxmd.com/read/28089919/an-orally-active-geranyl-acetophenone-attenuates-airway-remodeling-in-a-murine-model-of-chronic-asthma
#10
Yu Zhao Lee, Khozirah Shaari, Manraj Singh Cheema, Chau Ling Tham, Mohd Roslan Sulaiman, Daud Ahmad Israf
2,4,6-trihydroxy-3-geranyl acetophenone (tHGA) is a synthetic compound that is naturally found in Melicope ptelefolia. We had previously demonstrated that parenteral administration of tHGA reduces pulmonary inflammation in OVA-sensitized mice. In this study, we evaluated the effect of orally administered tHGA upon airway remodeling in a murine model of chronic asthma. Female BALB/C mice were sensitized intraperitoneally with ovalbumin (OVA) on day 0, 7 and 14, followed by aerosolized 1% OVA 3 times per week for 6 weeks...
January 12, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28089339/discovery-of-a-murine-model-of-clinical-pah-mission-impossible
#11
REVIEW
Zhiyu Dai, You-Yang Zhao
Pulmonary arterial hypertension (PAH) is a lung vascular disease characterized with a progressive increase of pulmonary vascular resistance and obliterative pulmonary vascular remodeling resulting in right heart failure and premature death. In this brief review, we document the recent advances in identifying genetically modified murine models of PH, with a focus on the recent discovery of the mouse model of Tie2 Cre-mediated deletion of prolyl hydroxylase 2, which exhibits progressive obliterative vascular remodeling, severe PAH, and right heart failure, thus recapitulating many of the features of clinical PAH...
December 15, 2016: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28077319/role-of-insulin-like-growth-factor-axis-in-the-bleomycin-induced-lung-injury-in-rats
#12
Lakshmi Kanth Kotarkonda, Ritu Kulshrestha, Krishnan Ravi
BACKGROUND: Alveolar epithelial cell injury has been proposed as a causative factor for the onset and progression of pulmonary fibrosis. However, the role of type II alveolar epithelial cells (AECs) in the epithelial mesenchymal transition (EMT) is controversial. AIMS: The present study performed in rats instilled with bleomycin investigated a) the expressions of the insulin growth factor (IGF-1) and insulin growth factor binding protein 5 (IGFBP-5) and transforming growth factor (TGF-β1) in the type II AECs, b) the role of type II AECs in EMT and extracellular matrix (ECM) formation and, c) the effect of pioglitazone on all the above parameters...
January 7, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28076408/development-of-a-novel-enzyme-linked-immunosorbent-assay-targeting-a-neo-epitope-generated-by-cathepsin-mediated-turnover-of-type-iii-collagen-and-its-application-in-chronic-obstructive-pulmonary-disease
#13
Daniel Guldager Kring Rasmussen, Jannie Marie Bülow Sand, Morten Asser Karsdal, Federica Genovese
A high level of extracellular matrix (ECM) turnover characterizes several lung diseases with fibrotic features. Type III collagen is one of the most abundant collagens in lung parenchyma, and cathepsins play a role in lung pathology, being responsible for tissue remodeling. In this study, we explore the diagnostic features of neo-epitope fragments of type III collagen generated by cathepsins that could reflect the pathological tissue turnover in patients with different diseases. A novel enzyme-linked immunosorbent assay (ELISA) measuring cathepsins B, L, S and K -generated type III collagen fragments (C3C) was developed for assessment in serum and plasma...
2017: PloS One
https://www.readbyqxmd.com/read/28076322/aeroallergen-der-p-2-promotes-motility-of-human-non-small-cell-lung-cancer-cells-via-toll-like-receptor-mediated-up-regulation-of-urokinase-type-plasminogen-activator-and-integrin-focal-adhesion-kinase-signaling
#14
Chun-Hsiang Lin, Hui-Han Lin, Cheng-Yi Kuo, Shao-Hsuan Kao
House dust mite (HDM) allergens are one of the major causes leading to respiratory hypersensitiveness and airway remodeling. Here we hypothesized that a major HDM allergen Der p 2 could increase cell motility and invasiveness of non-small cell lung cancer (NSCLC) cells. Our results showed that low dose (1 and 3 μg/mL) recombinant Der p 2 protein (DP2) enhanced the migration and invasiveness of human NSCLC cell A549, H1299 and CL1-5, but nonsignificantly altered their growth. Further investigation revealed that integrin αV level was increased and its downstream signaling including focal adhesion kinase (FAK) and paxillin were activated in A549 cells exposed to DP2...
January 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28073835/mechanosensitive-transient-receptor-potential-vanilloid-4-regulates-dermatophagoides-farinae-induced-airway-remodeling-via-2-distinct-pathways-modulating-matrix-synthesis-and-degradation
#15
Farai Gombedza, Vinay Kondeti, Nosayba Al-Azzam, Stephanie Koppes, Ernest Duah, Prachi Patil, Madison Hexter, Daniel Phillips, Charles K Thodeti, Sailaja Paruchuri
Contributions of mechanical signals to airway remodeling during asthma are poorly understood. Transient receptor potential vanilloid 4 (TRPV4), a mechanosensitive ion channel, has been implicated in cardiac and pulmonary fibrosis; however, its role in asthma remains elusive. Employing a Dermatophagoides farinae-induced asthma model, we report here that TRPV4 knockout mice were protected from D. farinae-induced airway remodeling. Furthermore, lung fibroblasts that were isolated from TRPV4 knockout mice showed diminished differentiation potential compared with wild-type mice...
January 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28069800/label-free-raman-spectroscopy-detects-stromal-adaptations-in-premetastatic-lungs-primed-by-breast-cancer
#16
Santosh Kumar Paidi, Asif Rizwan, Chao Zheng, Menglin Cheng, Kristine Glunde, Ishan Barman
Recent advances in animal modeling, imaging technology, and functional genomics have permitted precise molecular observations of the metastatic process. However, a comprehensive understanding of the premetastatic niche remains elusive, owing to the limited tools that can map subtle differences in molecular mediators in organ-specific microenvironments. Here, we report the ability to detect premetastatic changes in the lung microenvironment, in response to primary breast tumors, using a combination of metastatic mouse models, Raman spectroscopy, and multivariate analysis of consistent patterns in molecular expression...
January 15, 2017: Cancer Research
https://www.readbyqxmd.com/read/28068512/modulation-of-intersectin-1s-lung-expression-induces-obliterative-remodeling-and-severe-plexiform-arteriopathy-in-the-murine-pulmonary-vascular-bed
#17
Monal Patel, Dan Predescu, Cristina Bardita, Jiwang Chen, Niranjan Jeganathan, Melanie Pritchard, Salvatore DiBartolo, Roberto Machado, Sanda Predescu
Murine models of pulmonary arterial hypertension (PAH) that recapitulate the plexiform and obliterative arteriopathy seen in PAH patients and help in defining the molecular mechanisms involved are missing. Herein, we investigated whether intersectin-1s (ITSN) deficiency and prolonged lung expression of an ITSN fragment with endothelial cell (EC) proliferative potential (EHITSN), present in the lungs of PAH animal models and human patients, induce formation of plexiform/obliterative lesions and defined the molecular mechanisms involved...
January 6, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28066584/overexpression-of-farnesoid-x-receptor-in-small-airways-contributes-to-epithelial-to-mesenchymal-transition-and-cox-2-expression-in-chronic-obstructive-pulmonary-disease
#18
Bi Chen, Wen-Jie You, Shan Xue, Hui Qin, Xu-Ji Zhao, Miao Zhang, Xue-Qing Liu, Shu-Yang Zhu, Han-Dong Jiang
BACKGROUND: Epithelial-mesenchymal transition (EMT) and cyclooxygenase-2 (COX-2) contribute to airway remodelling and inflammation in chronic obstructive pulmonary disease (COPD). Recent data suggest that the farnesoid X receptor (FXR), a nuclear receptor traditionally considered as bile acid-activated receptor, is also expressed in non-classical bile acids target tissues with novel functions beyond regulating bile acid homeostasis. This study aimed to investigate the potential role of FXR in the development of COPD, as well as factors that affect FXR expression...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28063043/subcutaneous-and-sublingual-immunotherapy-in-a-mouse-model-of-allergic-asthma
#19
Laura Hesse, Martijn C Nawijn
Allergic asthma, caused by inhaled allergens such as house dust mite or grass pollen, is characterized by reversible airway obstruction, associated with an eosinophilic inflammation of the airways, as well as airway hyper responsiveness and remodeling. The inhaled allergens trigger a type-2 inflammatory response with involvement of innate lymphoid cells (ILC2) and Th2 cells, resulting in high production of immunoglobulin E (IgE) antibodies. Consequently, renewed allergen exposure results in a classic allergic response with a distinct early and late phase, both resulting in bronchoconstriction and shortness of breath...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28062913/understanding-the-developmental-pathways-pulmonary-fibroblasts-may-follow-during-alveolar-regeneration
#20
REVIEW
Stephen McGowan
Although pulmonary alveolar interstitial fibroblasts are less specialized than their epithelial and endothelial neighbors, they play essential roles during development and in response to lung injury. At birth, they must adapt to the sudden mechanical changes imposed by the onset of respiration and to a higher ambient oxygen concentration. In diseases such as bronchopulmonary dysplasia and interstitial fibrosis, their adaptive responses are overwhelmed leading to compromised gas-exchange function. Thus, although fibroblasts do not directly participate in gas-exchange, they are essential for creating and maintaining an optimal environment at the alveolar epithelial-endothelial interface...
January 6, 2017: Cell and Tissue Research
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