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https://www.readbyqxmd.com/read/28515300/a-novel-a-h7n2-influenza-virus-isolated-from-a-veterinarian-caring-for-cats-in-a-new-york-city-animal-shelter-causes-mild-disease-and-transmits-poorly-in-the-ferret-model
#1
Jessica A Belser, Joanna A Pulit-Penaloza, Xiangjie Sun, Nicole Brock, Claudia Pappas, Hannah M Creager, Hui Zeng, Terrence M Tumpey, Taronna R Maines
In December 2016, a low pathogenic avian influenza (LPAI) A(H7N2) virus was identified as the causative source of an outbreak in a cat shelter in New York City, which subsequently spread to multiple shelters in New York and Pennsylvania. One person with occupational exposure to infected cats became infected with the virus, representing the first LPAI H7N2 human infection in North America since 2003. Considering the close contact that frequently occurs between companion animals and humans, it was critical to assess the relative risk of this novel virus to public health...
May 17, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28508743/mycobacterium-kansasii-isolated-from-tuberculinpositive-rhesus-macaques-macaca-mulatta-in-the-absence-of-disease
#2
Steven T Shipley, David K Johnson, Morteza Roodgar, David Glenn Smith, Charles A Montgomery, Steven M Lloyd, James A Higgins, Edwin H Kriel, Hilton J Klein, William P Porter, Jerome B Nazareno, Paul W Houghton, Aruna Panda, Louis J DeTolla
Mycobacterial infections are of primary health concern in NHP colonies in biomedical research. NHP are constantly monitoredand screened for Mycobacterium spp. We report 6 Chinese-origin rhesus macaques infected with Mycobacterium kansasii thatexhibited positive tuberculin skin tests in the absence of disease. Two of these macaques were being used for research purposes;the remaining 4 macaques were residing at the contract quarantine company. Histopathology and acid-fast staining of fixed tissues from all macaques showed that all were free of disease...
May 15, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28507352/candidiasis-prevalence-and-resistance-profiling-in-a-tertiary-care-hospital-of-pakistan
#3
Bushra Jamil, Mohammad Tauseef Mukhtar Bokhari, Azhar Saeed, Mohammad Zahid Mukhtar Bokhari, Zakir Hussain, Tayyaba Khalid, Habib Bokhari, Mohammad Imran, Shahid Ahmad Abbasi
OBJECTIVE: To determine Candida colonisation/infection in renal transplant patients and to determine the resistance pattern against antifungal drugs. METHODS: This prospective, observational study was conducted at Al-Sayyed Hospital, Rawalpindi, Pakistan, from January to October 2014, in collaboration with the Microbiology and Public Health Laboratory's, Islamabad campus..The clinical specimens investigated included respiratory tract secretions, blood, urine, high vaginal swab, skin scrapings, and plastic devices samples...
May 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28468888/antibody-induced-internalization-of-the-human-respiratory-syncytial-virus-fusion-protein
#4
A Leemans, M De Schryver, W Van der Gucht, A Heykers, I Pintelon, A L Hotard, M L Moore, J A Melero, J S McLellan, B S Graham, L Broadbent, U F Power, G Caljon, P Cos, L Maes, P Delputte
Respiratory syncytial virus (RSV) infections remain a major cause of respiratory disease and hospitalizations among infants. Infection recurs frequently and establishes a weak and short-lived immunity. To date, RSV immunoprophylaxis and vaccine research is mainly focused on the RSV fusion (F) protein, but a vaccine remains elusive. The RSV F protein is a highly conserved surface glycoprotein and the main target of neutralizing antibodies induced by natural infection. Here, we analyzed an internalization process of antigen-antibody complexes after binding of RSV-specific antibodies to RSV antigens expressed on the surface of infected cells...
May 3, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28459399/-biliverdin-protects-the-isolated-lungs-from-ischemia-reperfusion-injury-via-anti-apoptosis
#5
Jieyun Sun, Peng Zhang, Xinying Yang, Di Xu, Bin Du, Junliang Chen, Minchen Wu, Qingfeng Pang
OBJECTIVE: To observe the effect of biliverdin (BV) on the lung ischemia/reperfusion injury (LIRI), and to investigate the mechanism of BV in treatment of LIRI. METHODS: Thirty-two male Sprague-Dawley (SD) rats were randomly divided into control group, LIRI group, glutathione (GSH) group and BV-treated group, with 8 rats in each group. The rat LIRI model was reproduced by isolated lung perfusion system. Fifteen minutes after perfusion balance, lungs of control group were perfused continuously for 90 minutes, and the lungs in other groups were reperfused for 90 minutes after 1-hour ischemia, while the perfusion was added 10 ?mol/L BV in BV-treated group and 4 mmol/L GSH in GSH group respectively...
January 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28450970/aberrant-dna-methylation-and-expression-of-spdef-and-foxa2-in-airway-epithelium-of-patients-with-copd
#6
J Song, I H Heijink, L E M Kistemaker, M Reinders-Luinge, W Kooistra, J A Noordhoek, R Gosens, C A Brandsma, W Timens, P S Hiemstra, M G Rots, M N Hylkema
BACKGROUND: Goblet cell metaplasia, a common feature of chronic obstructive pulmonary disease (COPD), is associated with mucus hypersecretion which contributes to the morbidity and mortality among patients. Transcription factors SAM-pointed domain-containing Ets-like factor (SPDEF) and forkhead box protein A2 (FOXA2) regulate goblet cell differentiation. This study aimed to (1) investigate DNA methylation and expression of SPDEF and FOXA2 during goblet cell differentiation and (2) compare this in airway epithelial cells from patients with COPD and controls during mucociliary differentiation...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28424691/increased-autophagy-related-5-gene-expression-is-associated-with-collagen-expression-in-the-airways-of-refractory-asthmatics
#7
Audrey H Poon, David F Choy, Fazila Chouiali, Rakhee K Ramakrishnan, Bassam Mahboub, Severine Audusseau, Andrea Mogas, Jeffrey M Harris, Joseph R Arron, Catherine Laprise, Qutayba Hamid
BACKGROUND: Fibrosis, particularly excessive collagen deposition, presents a challenge for treating asthmatic individuals. At present, no drugs can remove or reduce excessive collagen in asthmatic airways. Hence, the identification of pathways involved in collagen deposition would help to generate therapeutic targets to interfere with the airway remodeling process. Autophagy, a cellular degradation process, has been shown to be dysregulated in various fibrotic diseases, and genetic association studies in independent human populations have identified autophagy-related 5 (ATG5) to be associated with asthma pathogenesis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28415888/bioengineered-gold-nanoparticles-targeted-to-mesenchymal-cells-from-patients-with-bronchiolitis-obliterans-syndrome-does-not-rise-the-inflammatory-response-and-can-be-safely-inhaled-by-rodents
#8
Emanuela Cova, Simona Inghilleri, Laura Pandolfi, Monica Morosini, Sara Magni, Miriam Colombo, Davide Piloni, Chiara Finetti, Gabriele Ceccarelli, Laura Benedetti, Maria Gabriella Cusella, Manuela Agozzino, Fabio Corsi, Raffaele Allevi, Simona Mrakic-Sposta, Sarah Moretti, Simona De Gregori, Davide Prosperi, Federica Meloni
The use of gold nanoparticles as drug delivery system represents a promising issue for diseases without effective pharmacological treatment due to insufficient local drug accumulation and excessive systemic toxicity. Bronchiolitis obliterans syndrome (BOS) represents about 70% of cases of chronic lung allograft dysfunction, the main challenge to long term lung transplantation. It is believed that due to repeated insults to epithelial bronchiolar cells local inflammatory response creates a milieu that favours epithelial mesenchymal transition and activation of local mesenchymal cells leading to airway fibro-obliteration...
April 18, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/28367270/capsular-polysaccharide-of-mycoplasma-ovipneumoniae-induces-sheep-airway-epithelial-cell-apoptosis-via-ros-dependent-jnk-p38-mapk-pathways
#9
Zhongjia Jiang, Fuyang Song, Yanan Li, Di Xue, Ning Zhao, Jiamei Zhang, Guangcun Deng, Min Li, Xiaoming Liu, Yujiong Wang
In an attempt to better understand the pathogen-host interaction between invading Mycoplasma ovipneumoniae (M. ovipneumoniae) and sheep airway epithelial cells, biological effects and possible molecular mechanism of capsular polysaccharide of M. ovipneumoniae (CPS) in the induction of cell apoptosis were explored using sheep bronchial epithelial cells cultured in air-liquid interface (ALI). The CPS of M. ovipneumoniae was first isolated and purified. Results showed that CPS had a cytotoxic effect by disrupting the integrity of mitochondrial membrane, accompanied with an increase of reactive oxygen species and decrease of mitochondrial membrane potential (ΔΨm)...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28326486/genetic-characterization-of-porcine-circovirus-type-2-in-captive-wild-boars-in-southern-brazil
#10
José Paulo Hiroji Sato, Danielle Gava, Rejane Schaefer, Maurício Egídio Cantão, Janice Reis Ciacci-Zanella, David Emilio Santos Neves de Barcellos
Porcine circovirus type 2 (PCV2) has been identified in pig population in Brazil since 2000, but scarce studies involving wild boars with PCV2 infection are reported in the country. This study aimed to perform the genetic characterization of PCV2 detected in clinically healthy captive wild boars from farms located in Southern Brazil. Bronchial and mesenteric lymph nodes from 129 clinically healthy captive wild boars were tested by nested PCR for PCV2 detection. Six out of 38 positive samples (29.5%) were submitted to a quantitative real time PCR (qPCR) and genetic sequencing...
March 22, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28326166/trail-delivery-by-msc-derived-extracellular-vesicles-is-an-effective-anticancer-therapy
#11
ZhengQiang Yuan, Krishna K Kolluri, Kate H C Gowers, Sam M Janes
Extracellular vesicles (EVs) are lipid membrane-enclosed nanoparticles released by cells. They mediate intercellular communication by transferring biological molecules and therefore have potential as innovative drug delivery vehicles. TNF-related apoptosis-inducing ligand (TRAIL) selectively induces apoptosis of cancer cells. Unfortunately, the clinical application of recombinant rTRAIL has been hampered by its low bioavailability and resistance of cancer cells. EV-mediated TRAIL delivery may circumvent these problems...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28293872/effect-of-high-laser-output-on-the-central-bronchi-and-pulmonary-artery
#12
A Kirschbaum, P Rexin, D K Bartsch, K Quint
A diode-pump Nd:YAG high-power laser (wavelength 1320 nm, power 100 W) is routinely used to surgically remove lung metastases. Even pulmonary lesions in central locations are resectable via this method, yet it also carries a potential risk of damaging the larger bronchi and vessels in the vicinity. Studies investigating the safety of using high-power lasers are lacking. We therefore aimed to examine the direct effects of a 100-watt laser on the bronchi and pulmonary artery at a standard working velocity. From freshly slaughtered pigs, we isolated cylindrical specimens of the trachea, the main and lobar bronchi, and the central pulmonary artery from the both lungs...
May 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28291795/experimental-chronic-kidney-disease-attenuates-ischemia-reperfusion-injury-in-an-ex-vivo-rat-lung-model
#13
Chung-Kan Peng, Kun-Lun Huang, Chou-Chin Lan, Yu-Juei Hsu, Geng-Chin Wu, Chia-Hui Peng, Chin-Pyng Wu, Khee-Siang Chan
Lung ischemia reperfusion injury (LIRI) is one of important complications following lung transplant and cardiopulmonary bypass. Although patients on hemodialysis are still excluded as lung transplant donors because of the possible effects of renal failure on the lungs, increased organ demand has led us to evaluate the influence of chronic kidney disease (CKD) on LIRI. A CKD model was induced by feeding Sprague-Dawley rats an adenine-rich (0.75%) diet for 2, 4 and 6 weeks, and an isolated rat lung in situ model was used to evaluate ischemia reperfusion (IR)-induced acute lung injury...
2017: PloS One
https://www.readbyqxmd.com/read/28280112/lipidomic-characterization-and-localization-of-phospholipids-in-the-human-lung
#14
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 (AMs), bronchial epithelial cells (BECs), and alveolar type II cells (ATIIs), 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 MS in order to determine lipid localization in the tissue...
May 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28275173/tropism-and-innate-host-responses-of-influenza-a-h5n6-virus-an-analysis-of-ex%C3%A2-vivo-and-in-vitro-cultures-of-the-human-respiratory-tract
#15
Kenrie P Y Hui, Louisa L Y Chan, Denise I T Kuok, Chris K P Mok, Zi-Feng Yang, Run-Feng Li, Geraldine S M Luk, Elaine F Lee, Jimmy C C Lai, Hui-Ling Yen, Huachen Zhu, Yi Guan, John M Nicholls, J S Malik Peiris, Michael C W Chan
Since their first isolation in 2013, influenza A/H5N6 viruses have spread amongst poultry across multiple provinces in China and to Laos, Vietnam and Myanmar. So far, there have been 14 human H5N6 infections with 10 fatalities.We investigated the tropism, replication competence and cytokine induction of one human and two avian H5N6 isolates in ex vivo and in vitro cultures derived from the human respiratory tract. Virus tropism and replication were studied in ex vivo cultures of human nasopharynx, bronchus and lung...
March 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28237768/steroidal-saponins-from-datura-metel
#16
Nguyen Thi Mai, Nguyen Thi Cuc, Hoang Le Tuan Anh, Nguyen Xuan Nhiem, Bui Huu Tai, Chau Van Minh, Tran Hong Quang, Kwan Woo Kim, Youn-Chul Kim, Hyuncheol Oh, Phan Van Kiem
Datura metel L. (Solanaceae) is an annual herb that has been widely used in the traditional medicine for the treatment of coughs, bronchial asthma, and rheumatism. Chemical investigation of an acidic methanol extract of the whole plants of D. metel resulted in the isolation of five new steroidal saponins (1-3, 5, and 6), named metelosides A-E, and four known compounds (4, 7-9). Their structures were elucidated by extensive spectroscopic methods, including 1D and 2D NMR and MS spectra. The structures of metelosides A and B were found to be unusual among the reported spirostane-type steroidal saponins due to the presence of the acetamide groups in the molecules...
February 22, 2017: Steroids
https://www.readbyqxmd.com/read/28223388/in-vitro-and-in-vivo-antifungal-profile-of-a-novel-and-long-acting-inhaled-azole-pc945-on-aspergillus-fumigatus-infection
#17
Thomas Colley, Alexandre Alanio, Steven L Kelly, Gurpreet Sehra, Yasuo Kizawa, Andrew G S Warrilow, Josie E Parker, Diane E Kelly, Genki Kimura, Lauren Anderson-Dring, Takahiro Nakaoki, Mihiro Sunose, Stuart Onions, Damien Crepin, Franz Lagasse, Matthew Crittall, Jonathan Shannon, Michael Cooke, Stéphane Bretagne, John King-Underwood, John Murray, Kazuhiro Ito, Pete Strong, Garth Rapeport
The profile of PC945, a novel triazole antifungal designed for administration via inhalation, was assessed in a range of in vitro and in vivo studies. PC945 was characterized as a potent, tightly binding inhibitor of Aspergillus fumigatus sterol 14α-demethylase (CYP51A and CYP51B) activity (50% inhibitory concentrations [IC50s], 0.23 μM and 0.22 μM, respectively) with characteristic type II azole binding spectra. Against 96 clinically isolated A. fumigatus strains, the MIC values of PC945 ranged from 0.032 to >8 μg/ml, while those of voriconazole ranged from 0...
May 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28212540/expression-of-met-in-circulating-tumor-cells-correlates-with-expression-in-tumor-tissue-from-advanced-stage-lung-cancer-patients
#18
Marius Ilie, Edith Szafer-Glusman, Véronique Hofman, Elodie Long-Mira, Rebecca Suttmann, Walter Darbonne, Catherine Butori, Salomé Lalvée, Julien Fayada, Eric Selva, Wei Yu, Charles-Hugo Marquette, David S Shames, Elizabeth Punnoose, Paul Hofman
Given the difficulty in obtaining adequate tissue in NSCLC, we investigated the utility of circulating tumor cells (CTCs) for MET status assessment in NSCLC patients. We used two platforms for CTC capture, and assessed MET expression in CTCs and matched-bronchial biopsies in patients with advanced-stage III/IV lung adenocarcinoma. Baseline peripheral blood was collected from 256 advanced-stage III/IV NSCLC patients from Genentech clinical trials, and from 106 patients with advanced-stage III/IV lung adenocarcinoma treated at the Department of Pneumology, Pasteur Hospital, Nice...
April 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28195541/assessment-of-egfr-mutation-status-using-cell-free-dna-from-bronchoalveolar-lavage-fluid
#19
Sojung Park, Jae Young Hur, Kye Young Lee, Jae Cheol Lee, Jin Kyung Rho, Sun Hwa Shin, Chang-Min Choi
BACKGROUND: Much attention has been focused on epidermal growth factor receptor (EGFR) mutation testing since the introduction of EGFR-tyrosine kinase inhibitors have improved survival in EGFR-positive lung cancer patients. Liquid biopsy using circulating tumor cells or cell-free DNA (cfDNA) has enabled less invasive testing, but requires a highly sensitive method. To date, liquid biopsy using bronchoalveolar lavage (BAL) fluid has rarely been used. METHODS: From 20 patients with lung adenocarcinoma, we isolated cfDNA from 20 samples of cell-free BAL fluid and 19 cell-free bronchial washing samples...
February 14, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28154328/efficient-preparation-of-ephedrine-alkaloids-free-ephedra-herb-extract-and-its-antitumor-effect-and-putative-marker-compound
#20
REVIEW
Naohiro Oshima
 Ephedra Herb is a crude drug for the treatment of headache, bronchial asthma, nasal inflammation, and the common cold. Although it has been considered that ephedrine alkaloids (EAs) are the principal active ingredients of Ephedra Herb, EAs are known to induce palpitations, hypertension, insomnia, and dysuria as major side effects. Therefore, the administration of EAs-containing drugs to patients with cardiovascular-related diseases is strongly contraindicated. Previously, we isolated herbacetin 7-O-neohesperidoside from Ephedra Herb...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
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