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https://www.readbyqxmd.com/read/28718049/good-things-in-small-packages-an-innovative-delivery-approach-for-inhaled-insulin
#1
James B Fink, Lisa Molloy, John S Patton, Valdecir Castor Galindo-Filho, Jacqueline de Melo Barcelar, Luciana Alcoforado, Simone Cristina Soares Brandão, Armèle Dornelas de Andrade
PURPOSE: The design development of a small, hand held, battery operated, breath actuated inhaler as a drug/device platform for inhaled insulin posed a number of technical challenges. Our goal was to optimize lung deposition and distribution with aerosol generators producing 3-6 μm particle size distribution. METHODS: In silico modeling with computational fluid dynamics (CFD) and in vitro testing of device components were assessed using an Alberta idealized adult airway (Copley, UK) to optimize mouthpiece and aerosol path design for dose delivered distal to the trachea...
July 17, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28717395/brain-imaging-before-primary-lung-cancer-resection-a-controversial-topic
#2
Zoe Hudson, Eveline Internullo, Anthony Edey, Isabel Laurence, Davide Bianchi, Alfredo Addeo
OBJECTIVE: International and national recommendations for brain imaging in patients planned to undergo potentially curative resection of non-small-cell lung cancer (NSCLC) are variably implemented throughout the United Kingdom [Hudson BJ, Crawford MB, and Curtin J et al (2015) Brain imaging in lung cancer patients without symptoms of brain metastases: a national survey of current practice in EnglandClin Radiol https://doi.org/10.1016/j.crad.2015.02.007]. However, the recommendations are not based on high-quality evidence and do not take into account cost implications and local resources...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/28712048/photobiomodulation-therapy-improves-both-inflammatory-and-fibrotic-parameters-in-experimental-model-of-lung-fibrosis-in-mice
#3
Robson Alexandre Brochetti, Mayara Peres Leal, Raíssa Rodrigues, Renata Kelly da Palma, Luis Vicente Franco de Oliveira, Anna Carolina Ratto Tempestini Horliana, Amílcar Sabino Damazo, Ana Paula Ligeiro de Oliveira, Rodolfo Paula Vieira, Adriana Lino-Dos-Santos-Franco
Lung fibrosis (LF) is a chronic and progressive lung disease characterized by pulmonary parenchyma progressive lesion, inflammatory infiltration, and interstitial fibrosis. It is developed by excessive collagen deposition and other cellular matrix components, resulting in severe changes in the alveolar architecture. Considering the absence of effective treatment, the aim of this study was to investigate the effect of photobiomodulation therapy (PBMT) on the development of PF. For this purpose, we used C57BL6 mice subjected to induction of LF by bleomycin administration (1...
July 16, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28710980/association-of-individual-level-concentrations-and-human-respiratory-tract-deposited-doses-of-fine-particulate-matter-with-alternation-in-blood-pressure
#4
Wenjun Yin, Jian Hou, Tian Xu, Juan Cheng, Xiaoying Wang, Shilin Jiao, Lin Wang, Cheng Huang, Youjian Zhang, Jing Yuan
Fine particulate matter (PM2.5) contributes to the risk of cardiovascular events, partially owing to its deposition in the human respiratory tract. To investigate short-term effects of ambient PM2.5 exposure on alternation of blood pressure (BP), this study was conducted during the winter-summer period between 2014 and 2015. The study included 106 community residents in Wuhan city, China. We repeatedly monitored the household and outdoor PM2.5 concentrations as well as individual-level PM2.5 in each season, and then assessed personal PM2...
July 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28710886/the-cellular-and-molecular-mechanism-of-radiation-induced-lung-injury
#5
Yijuan Huang, Weiqiang Zhang, Fangrong Yu, Fu Gao
The lung is one of several moderately radiosensitive organs. Radiation-induced lung injury (RILI), including acute radiation pneumonitis and chronic radiation-induced pulmonary fibrosis, occurs most often in radiotherapy of lung cancer, esophageal cancer, and other thoracic cancers. Clinical symptoms of RILI include dry cough, shortness of breath, chest pain, fever, and even severe respiratory failure and death. The occurrence of RILI is a complex process that includes a variety of cellular and molecular interactions which ultimately leads to large fibroblast accumulation, proliferation, and differentiation, resulting in excessive extracellular matrix deposits, causing pulmonary fibrosis...
July 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28709839/fungal-immunomodulatory-protein-fve-could-modulate-airway-remodel-through-by-affect-il17-cytokine
#6
Yu-Tzu Lee, Chia-Ta Wu, Hai-Lun Sun, Jiunn-Liang Ko, Ko-Haung Lue
BACKGROUND: Asthma is one of the most common allergic diseases. Our previous studies have reported that FIP-fve in acute allergic mouse model can reduce inflammation, improve the balance of the Th1/Th2 system. However, the effects of reducing airway remodeling on FIP-fve is still unknown. OBJECTIVE: We hypothesized that orally administrated FIP-fve should be able to reduce airway remodeling in chronic allergic models. METHODS: The chronic asthma animal model was established with 6-8 weeks female Balb/c mice...
June 29, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28708440/model-calculations-of-regional-deposition-and-disposition-for-single-doses-of-inhaled-liposomal-and-dry-powder-ciprofloxacin
#7
Andrew R Martin, Warren H Finlay
BACKGROUND: Model predictions of regional deposition in the respiratory tract are useful in assessing factors that influence the effectiveness of aerosol delivery. Regional deposition models have previously been coupled with models of mucous production and clearance to estimate initial concentrations of drug deposited in the airway surface liquid (ASL) lining tracheobronchial airways. METHODS: Established models of regional deposition and ASL volumes were used to provide input to a new model evaluating the disposition of drug resulting from dissolution or release, absorption, and mucociliary clearance...
July 14, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28704919/the-role-of-radiation-induced-injury-on-lung-cancer
#8
Stephanie Puukila, Christopher Thome, Antone L Brooks, Gayle Woloschak, Douglas R Boreham
This manuscript evaluates the role of cell killing, tissue disorganization, and tissue damage on the induction of lung cancer following low dose rate radiation exposures from internally deposited radioactive materials. Beagle dogs were exposed by inhalation to (90)Y, (91)Y, (144)Ce, or (90)Sr in fused clay particles. Dogs lived out their life span with complete pathology conducted at the time of death. The radiation dose per cell turnover was characterized and related to the cause of death for each animal. Large doses per cell turnover resulted in acute death from lung damage with extensive cell killing, tissue disorganization, chronic inflammatory disease, fibrosis, and pneumonitis...
July 12, 2017: Cancers
https://www.readbyqxmd.com/read/28701167/a-combined-experimental-and-numerical-study-on-upper-airway-dosimetry-of-inhaled-nanoparticles-from-an-electrical-discharge-machine-shop
#9
Lin Tian, Yidan Shang, Rui Chen, Ru Bai, Chunying Chen, Kiao Inthavong, Jiyuan Tu
BACKGROUNDS: Exposure to nanoparticles in the workplace is a health concern to occupational workers with increased risk of developing respiratory, cardiovascular, and neurological disorders. Based on animal inhalation study and human lung tumor risk extrapolation, current authoritative recommendations on exposure limits are either on total mass or number concentrations. Effects of particle size distribution and the implication to regional airway dosages are not elaborated. METHODS: Real time production of particle concentration and size distribution in the range from 5...
July 12, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28701164/effects-from-a-90-day-inhalation-toxicity-study-with-cerium-oxide-and-barium-sulfate-nanoparticles-in-rats
#10
Daniela Schwotzer, Heinrich Ernst, Dirk Schaudien, Heiko Kock, Gerhard Pohlmann, Clemens Dasenbrock, Otto Creutzenberg
BACKGROUND: Nanomaterials like cerium oxide and barium sulfate are frequently processed in industrial and consumer products and exposure of humans and other organisms is likely. Generally less information is given on health effects and toxicity, especially regarding long-term exposure to low nanoparticle doses. Since inhalation is still the major route of uptake the present study focused on pulmonary effects of CeO2NM-212 (0.1, 0.3, 1.0, 3.0 mg/m(3)) and BaSO4NM-220 nanoparticles (50...
July 12, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28694203/soluble-epoxide-hydrolase-inhibitor-auda-decreases-bleomycin-induced-pulmonary-toxicity-in-mice-by-inhibiting-the-p38-smad3-pathways
#11
Xin-Wei Dong, Yong-Liang Jia, Ling-Tian Ge, Bo Jiang, Jun-Xia Jiang, Shen Jian, Ya-Chao Jin, Guan Yan, Yun Sun, Qiang-Min Xie
Bleomycin (BLM) has potent tumor cell-killing properties that have given it an important place in cancer chemotherapy, but pulmonary toxicity is its major adverse effect. Soluble epoxide hydrolase (sEH) inhibitors have been reported to have protective effects in fibrosis models, but the effects of AUDA, an sEH inhibitor of BLM-induced pulmonary toxicity and fibrosis, remain to be researched. In this study, we assessed the effects of AUDA on the BLM-induced pulmonary fibrosis in a mouse model, and transforming growth factor (TGF)-β1-induced epithelial proliferation and epithelial-mesenchymal transition (EMT) in vitro by monitoring changes in pulmonary function, inflammatory response, fibrotic remodeling, and signaling pathways...
July 7, 2017: Toxicology
https://www.readbyqxmd.com/read/28692093/chemoselective-ligation-reaction-of-n-acetylglucosamine-nag-with-hydrazide-functional-probes-to-determine-galactosyltransferase-activity-by-maldi-mass-spectrometry
#12
Hyojik Yang, Quan Cheng
Quantification of β-1,4-galactosyltransferase (β-1,4-GT) activity is of considerable significance in the diagnosis of various cancers including lung and ovarian cancer. We report here the use of synthetic β-N-acetylglucosamine (NAG) ligands that contain hydrazide functional groups to determine galactosyltransferase activity by mass spectrometry. With hydrazide-linked β-d-NAG as the acceptor, the activity of β-1,4-GT is quantified by matrix-assisted laser desorption/ionization (MALDI)-time-of-flight (TOF) mass spectrometry (MS) with high efficiency...
July 10, 2017: Analyst
https://www.readbyqxmd.com/read/28688352/inter-comparison-of-personal-monitors-for-nanoparticles-exposure-at-workplaces-and-in-the-environment
#13
Ana Maria Todea, Stefanie Beckmann, Heinz Kaminski, Delphine Bard, Sébastien Bau, Simon Clavaguera, Dirk Dahmann, Hélène Dozol, Nico Dziurowitz, Karine Elihn, Martin Fierz, Göran Lidén, Asmus Meyer-Plath, Christian Monz, Volker Neumann, Johannes Pelzer, Barbara Katrin Simonow, Patrick Thali, Ilse Tuinman, Arjan van der Vleuten, Huub Vroomen, Christof Asbach
Personal monitors based on unipolar diffusion charging (miniDiSC/DiSCmini, NanoTracer, Partector) can be used to assess the individual exposure to nanoparticles in different environments. The charge acquired by the aerosol particles is nearly proportional to the particle diameter and, by coincidence, also nearly proportional to the alveolar lung-deposited surface area (LDSA), the metric reported by all three instruments. In addition, the miniDiSC/DiSCmini and the NanoTracer report particle number concentration and mean particle size...
July 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28686693/ivermectin-treatment-of-loa-loa-hyper-microfilaraemic-baboons-papio-anubis-assessment-of-microfilarial-loads-haematological-and-biochemical-parameters-and-histopathological-changes-following-treatment
#14
Samuel Wanji, Ebanga-Echi J Eyong, Nicholas Tendongfor, Che J Ngwa, Elive N Esuka, Arnaud J Kengne-Ouafo, Fabrice R Datchoua-Poutcheu, Peter Enyong, Dalen Agnew, Rob R Eversole, Adrian Hopkins, Charles D Mackenzie
BACKGROUND: Individuals with high intensity of Loa loa are at risk of developing serious adverse events (SAEs) post treatment with ivermectin. These SAEs have remained unclear and a programmatic impediment to the advancement of community directed treatment with ivermectin. The pathogenesis of these SAEs following ivermectin has never been investigated experimentally. The Loa/baboon (Papio anubis) model can be used to investigate the pathogenesis of Loa-associated encephalopathy following ivermectin treatment in humans...
July 7, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28684908/%C3%AE-bisabolol-loaded-lipid-core-nanocapsules-reduce-lipopolysaccharide-induced-pulmonary-inflammation-in-mice
#15
Ana Paula L D'Almeida, Maria T Pacheco de Oliveira, Éverton T de Souza, Diego de Sá Coutinho, Bianca T Ciambarella, Cristiano R Gomes, Thatiana Terroso, Sílvia S Guterres, Adriana R Pohlmann, Patrícia Mr Silva, Marco A Martins, Andressa Bernardi
Acute respiratory distress syndrome (ARDS) is a severe clinical condition of respiratory failure due to an intense inflammatory response with different etiologies. Despite all efforts, therapy remains limited, and ARDS is still associated with high mortality and morbidity. Plants can provide a vast source of active natural products for the discovery of new drugs. α-bisabolol (α-bis), a constituent of the essential oil from chamomile, has elicited pharmacological interest. However, the molecule has some limitations to its biological application...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28683222/application-of-a-one-dimensional-computational-model-for-the-prediction-of-deposition-from-a-dry-powder-inhaler
#16
Konstantinos Gourgoulianis, Zoi Daniil, Katerina Athanasiou, Stavroula Rozou, Vasileios Bontozoglou
BACKGROUND: Accurate prediction of the regional deposition of inhaled dry powders as a function of powder properties and breathing pattern is a long-term research goal for pulmonary drug delivery. In the present work, deposition along the respiratory tract of dry powders of Fluticasone propionate and Salmeterol is predicted. METHODS: A one-dimensional particle transport and deposition model is used, whose novelty is in the treatment of the alveolar space of each airway generation as an efficient mixing chamber...
July 6, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28680583/enhanced-inflammatory-cell-profiles-in-schistosomiasis-induced-pulmonary-vascular-remodeling
#17
Zahara Ali, Djuro Kosanovic, Ewa Kolosionek, Ralph T Schermuly, Brian B Graham, Alistair Mathie, Ghazwan Butrous
Schistosomiasis (bilharzia) is a neglected parasitic disease caused by trematode flatworms of the genus Schistosoma which affects over 240 million people worldwide. It is characterized by the formation of inflammatory granulomas around deposited parasite eggs. Recent studies have revealed that immune and inflammatory responses play a crucial role in pathogenesis of schistosomiasis. The aim of this paper is to systematically evaluate the number and distribution of inflammatory cells in S. mansoni-infected mice at different doses and time points...
March 2017: Pulmonary Circulation
https://www.readbyqxmd.com/read/28677920/the-genetic-heterogeneity-among-different-mouse-strains-impacts-the-lung-injury-potential-of-multiwalled-carbon-nanotubes
#18
Xiang Wang, Yu-Pei Liao, Donatello Telesca, Chong Hyun Chang, Tian Xia, André E Nel
Genetic variation constitutes an important variable impacting the susceptibility to inhalable toxic substances and air pollutants, as reflected by epidemiological studies in humans and differences among animal strains. While multiwalled carbon nanotubes (MWCNTs) are capable of causing lung fibrosis in rodents, it is unclear to what extent the genetic variation in different mouse strains influence the outcome. Four inbred mouse strains, including C57Bl/6, Balb/c, NOD/ShiLtJ, and A/J, to test the pro-fibrogenic effects of a library of MWCNTs in vitro and in vivo are chosen...
July 5, 2017: Small
https://www.readbyqxmd.com/read/28676846/inactivation-of-the-thymidylate-synthase-thya-in-non-typeable-haemophilus-influenzae-modulates-antibiotic-resistance-and-has-a-strong-impact-on-its-interplay-with-the-host-airways
#19
Irene Rodríguez-Arce, Sara Martí, Begoña Euba, Ariadna Fernández-Calvet, Javier Moleres, Nahikari López-López, Montserrat Barberán, José Ramos-Vivas, Fe Tubau, Carmen Losa, Carmen Ardanuy, José Leiva, José E Yuste, Junkal Garmendia
Antibacterial treatment with cotrimoxazol (TxS), a combination of trimethoprim and sulfamethoxazole, generates resistance by, among others, acquisition of thymidine auxotrophy associated with mutations in the thymidylate synthase gene thyA, which can modify the biology of infection. The opportunistic pathogen non-typeable Haemophilus influenzae (NTHi) is frequently encountered in the lower airways of chronic obstructive pulmonary disease (COPD) patients, and associated with acute exacerbation of COPD symptoms...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28676645/kif5a-transports-collagen-vesicles-of-myofibroblasts-during-pleural-fibrosis
#20
Hirotoshi Kamata, Yoshikazu Tsukasaki, Tsuyoshi Sakai, Reiko Ikebe, Julia Wang, Ann Jeffers, Jake Boren, Shuzi Owens, Takahiro Suzuki, Masaaki Higashihara, Steven Idell, Torry A Tucker, Mitsuo Ikebe
Fibrosis involves the production of extracellular matrix proteins in tissues and is often preceded by injury or trauma. In pleural fibrosis excess collagen deposition results in pleural thickening, increased stiffness and impaired lung function. Myofibroblasts are responsible for increased collagen deposition, however the molecular mechanism of transportation of procollagen containing vesicles for secretion is unknown. Here, we studied the role of kinesin on collagen-1 (Col-1) containing vesicle transportation in human pleural mesothelial cells (HPMCs)...
July 4, 2017: Scientific Reports
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