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https://www.readbyqxmd.com/read/28551639/a-novel-near-infrared-fluorescent-protein-irfp720-facilitates-transcriptional-profiling-of-prostate-cancer-bone-metastasis-in-mice
#1
Mariko Honda, Satomi Yogosawa, Minori Kamada, Yuko Kamata, Takahiro Kimura, Yusuke Koike, Toru Harada, Hiroyuki Takahashi, Shin Egawa, Kiyotsugu Yoshida
BACKGROUND: Bone represents a frequent site of prostate cancer metastasis. As the molecular mechanism remains unclear, an accessible animal model is required. MATERIALS AND METHODS: We established a novel murine metastasis model using near-infrared fluorescent protein iRFP720-labelled prostate cancer (PC3) cells. To clarify transcriptional alterations during metastasis, iRFP720-PC3 cells were intracardially injected into male mice. mRNA expression profiles of metastasis in bone using marrow cancer cells extracted by centrifugal separation and cell sorting were compared with those of parental cells by microarray...
June 2017: Anticancer Research
https://www.readbyqxmd.com/read/28550732/reversing-the-polarization-of-tumor-associated-macrophages-inhibits-tumor-metastasis
#2
Rufei Yuan, Shengfu Li, Hua Geng, Xin Wang, Qinglin Guan, Xiaohuan Li, Changle Ren, Xiaolin Yuan
OBJECTIVE: The M2 phenotype is dominant in tumor associated macrophages (TAM), and plays a key role in promoting tumor growth, invasion and metastasis. Converting TAM polarization from M2 to M1 may contribute to eliciting anti-tumor-specific immune responses and inhibiting tumor metastasis. In this study, the effect of reversing the polarization of TAM on tumor metastasis was investigated. METHODS: Peritoneal macrophages were obtained from BABL/c mice, and M2 polarization was induced by IL-4...
May 24, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28550120/hiv-1-decreases-nrf2-are-activity-and-phagocytic-function-in-alveolar-macrophages
#3
Bashar S Staitieh, Lingmei Ding, Wendy A Neveu, Paul Spearman, David M Guidot, Xian Fan
Respiratory complications occur frequently in individuals living with human immunodeficiency-1 virus (HIV) infection, and there is evidence that HIV-related oxidative stress impairs alveolar macrophage immune function. We hypothesized that nuclear factor (erythroid-derived 2)-like 2 (Nrf2), a master transcription factor that activates the antioxidant response element (ARE) and regulates antioxidant defenses, has an important role in alveolar macrophage (AMs) immune dysfunction in individuals with HIV infections...
May 26, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28549307/thymoquinone-protects-against-the-sepsis-induced-mortality-mesenteric-hypoperfusion-aortic-dysfunction-and-multiple-organ-damage-in-rats
#4
Erdem Kamil Ozer, Mustafa Tugrul Goktas, Aysun Toker, Sultan Pehlivan, Hulagu Bariskaner, Ceyhan Ugurluoglu, Alper Bektas Iskit
BACKGROUND: Thymoquinone (TQ) is a potent cytoprotective, antioxidant and anti-inflammatory agent. We aimed to investigate the possible protective effects of TQ on survival, mesenteric artery blood flow (MABF), vascular reactivity, oxidative and inflammatory injuries in a murine sepsis model induced by cecal ligation and puncture (CLP). METHODS: Wistar rats were divided into the following four groups: Sham, CLP, Sham+TQ and CLP+TQ. TQ (1mg/kg/day) or vehicle (dimethyl sulfoxide, 1mL/kg/day) was intraperitoneally injected for 3 days...
March 24, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28548825/nepetaefolins-a-j-cytotoxic-chinane-and-abietane-diterpenoids-from-caryopteris-nepetaefolia
#5
Cheng-Gang Zhang, Gui-Xin Chou, Xu-Dong Mao, Qing-Shan Yang, Jian-Li Zhou
Nepetaefolins A-J (1-10) and seven known compounds were isolated from the whole plant of Caryopteris nepetaefolia. The absolute configurations of 1-3 were determined from single-crystal X-ray diffraction and spectroscopic data. Compounds 6 and 7, with IC50 values of 6.3-9.0 μM, showed higher cytotoxicity than paclitaxel in one non-small-cell lung cancer, patient-derived xenograft (PDX) model when tested using PDX models and the adenosine triphosphate-tumor chemosensitivity assay (ATP-TCA).
May 26, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28548489/glycosaminoglycans-specific-cell-targeting-and-imaging-using-fluorescent-nanodiamonds-coated-with-viral-envelope-proteins
#6
Minh D Pham, Chandra Prakash Epperla, Chia-Lung Hsieh, Wen Chang, Huan-Cheng Chang
Understanding virus-host interactions is crucial for vaccine development. This study investigates such interactions using fluorescent nanodiamonds (FNDs) coated with vaccinia envelope proteins as the model system. To achieve this goal, we noncovalently conjugated 100-nm FND with A27(aa 21-84), a recombinant envelope protein of vaccinia virus, for glycosaminoglycans (GAGs)-specific targeting and imaging of living cells. Another recombinant protein A27(aa 33-84) that removes the GAGs-binding sequences was also used for comparison...
May 26, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28546469/green-tea-egcg-enhances-cardiac-function-restoration-through-expression-of-survival-signaling-in-dm-rats-with-autologous-adipose-tissue-derived-stem-cell
#7
Tung-Sheng Chen, Show-Yih Liou, Chia-Hua Kuo, Lung-Fa Pan, Yu-Lan Yeh, Jeffery Liou, V Vijaya Padma, Chun-Hsu Yao, Wei-Wen Kuo, Chih-Yang Huang
The present study tests a hypothesis that cardioprotective effects mediated by autologous adipose-derived stem cells (ADSC) in rats afflicted with insulin-dependent diabetes mellitus (IDDM), may be synergistically enhanced by oral treatment with green tea epigallocatechin gallat (ECCG). Wistar rats were divided into sham, DM, DM+ADSC (autologous transplanted 1x106 cells/rat) and DM+ADSC+E (E, green tea oral administration EGCG). Heart tissues were isolated for all rats and investigations were performed after 2-months treatment...
May 25, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28546153/impact-of-ventilation-induced-lung-injury-on-the-structure-and-function-of-lamellar-bodies
#8
Scott Milos, Reza Khazaee, Lynda A McCaig, Karen Nygard, Richard B Gardiner, Yi Y Zuo, Cory M Yamashita, Ruud A W Veldhuizen
Alterations to the pulmonary surfactant system have been observed consistently in ventilation-induced lung injury including composition changes and impairments in the surface tension reducing ability of the isolated extracellular surfactant. However, there is limited information about the effects of VILI on the intracellular form of surfactant, the lamellar body. It is hypothesized that VILI leads to alterations of lamellar bodies numbers and function. To test this hypothesis, rats were randomized to one of three groups, non-ventilated controls, control ventilation and high tidal volume ventilation (VILI)...
May 25, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28545810/thymic-stromal-lymphopoietin-and-apocynin-alter-the-expression-of-airway-remodeling-factors-in-human-rhinovirus-infected-cells
#9
Joanna Wieczfinska, Rafal Pawliczak
Airway remodeling is a characteristic of bronchial asthma. The process involves the expression of many genes, such as transforming growth factor-beta (TGF-β), tissue inhibitors of metalloproteinases (TIMP-1), MMP and arginase. Human rhinovirus (HRV) is known to cause asthma exacerbations, and viral infections might be involved in the development of airway remodeling. Therefore, the aim of this study was to determine the influence of HRV on the genes involved in airway remodeling and to examine the impact of thymic stromal lymphopoietin (TSLP) and contribution of oxidative stress on airway remodeling in the context of HRV infection...
May 16, 2017: Immunobiology
https://www.readbyqxmd.com/read/28545090/neotropical-bats-that-co-habit-with-humans-function-as-dead-end-hosts-for-dengue-virus
#10
Amanda Vicente-Santos, Andres Moreira-Soto, Claudio Soto-Garita, Luis Guillermo Chaverri, Andrea Chaves, Jan Felix Drexler, Juan Alberto Morales, Alejandro Alfaro-Alarcón, Bernal Rodríguez-Herrera, Eugenia Corrales-Aguilar
Several studies have shown Dengue Virus (DENV) nucleic acids and/or antibodies present in Neotropical wildlife including bats, suggesting that some bat species may be susceptible to DENV infection. Here we aim to elucidate the role of house-roosting bats in the DENV transmission cycle. Bats were sampled in households located in high and low dengue incidence regions during rainy and dry seasons in Costa Rica. We captured 318 bats from 12 different species in 29 households. Necropsies were performed in 205 bats to analyze virus presence in heart, lung, spleen, liver, intestine, kidney, and brain tissue...
May 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28544706/exhaled-nitric-oxide-pulmonary-function-and-disease-activity-in-children-with-systemic-lupus-erythematosus
#11
Jitladda Deerojanawong, Pitchaya Leartphichalak, Ankanee Chanakul, Suchada Sritippayawan, Rujipat Samransamruajkit
AIM: To determine the association among fractional exhaled nitric oxide (FENO), pulmonary function, and disease activity in children with systemic lupus erythematosus (SLE). METHODS: Children aged 7-18 years, diagnosed with SLE under the criteria of the American Rheumatism Association (revised 2012), were enrolled. All eligible participants had disease activity, FENO, and pulmonary function evaluated and re-evaluated at 6-month follow-up. RESULTS: Twenty-four children (95...
May 22, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28544140/investigation-of-bronchiectasis-in-severe-uncontrolled-asthma
#12
Katerina Dimakou, Anna Gousiou, Michail Toumbis, Maria Kaponi, Serafeim Chrysikos, Loukas Thanos, Christina Triantafillidou
INTRODUCTION: The presence of bronchiectasis in patients with asthma varies in different reports, while a clear etiological relation has not been precisely established. OBJECTIVES: To investigate the presence of bronchiectasis in patients with severe uncontrolled asthma and examine whether they contribute to the severity of asthma. METHODS: Patients with severe asthma were prospectively recruited. HRCT of the chest was performed to identify and grade bronchiectasis using the "Smith" radiology scale...
May 24, 2017: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/28542649/evaluation-of-connectivity-map-discovered-celastrol-as-a-radiosensitizing-agent-in-a-murine-lung-carcinoma-model-feasibility-study-of-diffusion-weighted-magnetic-resonance-imaging
#13
Hong Young Jun, Tae-Hoon Kim, Jin Woo Choi, Young Hwan Lee, Kang Kyoo Lee, Kwon-Ha Yoon
This study was designed to identify potential radiosensitizing (RS) agents for combined radio- and chemotherapy in a murine model of human lung carcinoma, and to evaluate the in vivo effect of the RS agents using diffusion-weighted magnetic resonance imaging (DW-MRI). Radioresistance-associated genes in A549 and H460 cells were isolated on the basis of their gene expression profiles. Celastrol was selected as a candidate RS by using connectivity mapping, and its efficacy in lung cancer radiotherapy was tested...
2017: PloS One
https://www.readbyqxmd.com/read/28542565/promiscuous-signaling-by-a-regulatory-system-unique-to-the-pandemic-pmen1-pneumococcal-lineage
#14
Anagha Kadam, Rory A Eutsey, Jason Rosch, Xinyu Miao, Mark Longwell, Wenjie Xu, Carol A Woolford, Todd Hillman, Anfal Shakir Motib, Hasan Yesilkaya, Aaron P Mitchell, N Luisa Hiller
Streptococcus pneumoniae (pneumococcus) is a leading cause of death and disease in children and elderly. Genetic variability among isolates from this species is high. These differences, often the product of gene loss or gene acquisition via horizontal gene transfer, can endow strains with new molecular pathways, diverse phenotypes, and ecological advantages. PMEN1 is a widespread and multidrug-resistant pneumococcal lineage. Using comparative genomics we have determined that a regulator-peptide signal transduction system, TprA2/PhrA2, was acquired by a PMEN1 ancestor and is encoded by the vast majority of strains in this lineage...
May 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28539719/ultrasound-assisted-extraction-of-ursolic-acid-from-the-flowers-of-ixora-coccinia-linn-rubiaceae-and-antiproliferative-activity-of-ursolic-acid-and-synthesized-derivatives
#15
Silvana Amadeu Ferreira Alves Monteath, Maria Aparecida M Maciel, Raquel Garcia Vega, Heloisa de Mello, Carollina de Araújo Martins, Andressa Esteves-Souza, Cerli Rocha Gattass, Aurea Echevarria
BACKGROUND: Ixora coccinea Linn (Rubiaceae) is an evergreen shrub with bright scarlet colored flowers found in several tropical and subtropical countries. It is used as an ornamental and medicinal plant. Phytochemical studies revealed that its major special metabolites are triterpene acids, such as ursolic and oleanolic acid. OBJECTIVE: To evaluate the isolation of ursolic acid (UA) (1) from methanol extracts of I. coccinea flowers through two methodologies, to prepare four derivatives, and to evaluate the cytotoxic effect against six cancer cell lines...
April 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28537805/pathology-of-chronic-hypersensitivity-pneumonitis-what-is-it-what-are-the-diagnostic-criteria-why-do-we-care
#16
Andrew Churg, AnaMaria Bilawich, Joanne L Wright
CONTEXT: - Chronic hypersensitivity pneumonitis (CHP) has emerged from obscurity during the past 15 years and is now recognized as a very common form of fibrosing interstitial pneumonia but one that is frequently misdiagnosed both clinically and on surgical lung biopsy as usual interstitial pneumonia/idiopathic pulmonary fibrosis (UIP/IPF) or fibrotic nonspecific interstitial pneumonia. OBJECTIVE: - To review the pathologic features of CHP. DATA SOURCES: - Clinical, pathology, and radiology literature were used...
May 24, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28535649/-cancer-associated-fibroblasts-regulate-the-chemoresistance-of-lung-cancer-cell-line-a549-via-sdf-1-secretion
#17
F Zou, Z H Zhang, Y T Zhang, J Q Zhao, X L Zhang, C L Wen, X Y Song, W M Zhou
Objective: To investigate whether cancer-associated- fibroblasts (CAF), the key component of tumor microenvironment, regulate the chemoresistant capacity of lung cancer cell line A549 through SDF-1 secretion. Methods: Primary cell isolation techniques was used to isolate cancer-associated-fibroblasts from lung cancer patients. MTT assay was applied to determine the proliferation and chemoresistance of A549 cells. Quantative PCR was used to detect the mRNA changes of Bcl-xL. Western blotting was used to detect the protein expression of Bcl-xL...
May 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28535533/malat1-modulates-tgf-%C3%AE-1-induced-endothelial-to-mesenchymal-transition-through-downregulation-of-mir-145
#18
Yin Xiang, Yachen Zhang, Yong Tang, Qianhui Li
BACKGROUND/AIMS: Endothelial-to-mesenchymal transition (EndMT) plays significant roles under various pathological conditions including cardiovascular diseases, fibrosis, and cancer. EndMT of endothelial progenitor cells (EPCs) contributes to neointimal hyperplasia following cell therapy Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is a long non-coding RNA (lncRNA) that promotes metastasis and cancer. MicroRNA-145 (miR-145) is a tumor suppressor that has been reported to inhibit SMAD3-mediated epithelial-to-mesenchymal transition (EMT) of cancer cells...
May 25, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28534862/differences-in-gene-expression-profiles-between-early-and-late-isolates-in-monospecies-achromobacter-biofilm
#19
Signe M Nielsen, Rikke L Meyer, Niels Nørskov-Lauritsen
Bacteria of genus Achromobacter are emerging pathogens in cystic fibrosis (CF) capable of biofilm formation and development of antimicrobial resistance. Evolutionary adaptions in the transition from primary to chronic infection were assessed by transcriptomic analysis of successive isolates of Achromobacter xylosoxidans from a single CF patient. Several efflux pump systems targeting antimicrobial agents were upregulated during the course of the disease, whereas all genes related to motility were downregulated...
May 19, 2017: Pathogens
https://www.readbyqxmd.com/read/28534038/analysis-of-mitochondrial-transfer-in-direct-co-cultures-of-human-monocyte-derived-macrophages-mdm-and-mesenchymal-stem-cells-msc
#20
Megan V Jackson, Anna D Krasnodembskaya
Mesenchymal stem/stromal cells (MSC) are adult stem cells which have been shown to improve survival, enhance bacterial clearance and alleviate inflammation in pre-clinical models of acute respiratory distress syndrome (ARDS) and sepsis. These diseases are characterised by uncontrolled inflammation often underpinned by bacterial infection. The mechanisms of MSC immunomodulatory effects are not fully understood yet. We sought to investigate MSC cell contact-dependent communication with alveolar macrophages (AM), professional phagocytes which play an important role in the lung inflammatory responses and anti-bacterial defence...
May 5, 2017: Bio-protocol
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