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https://www.readbyqxmd.com/read/28332068/photobiomodulation-with-led-and-laser-in-repair-of-mandibular-socket-rabbit-clinical-evaluation-histological-and-histomorphometric
#1
Cláudio Rômulo Comunian, Antônio Luis Neto Custódio, Leandro Junqueira de Oliveira, Carlos Eduardo Assis Dutra, Milton D'almeida Ferreira Neto, Cleuza Maria Faria Rezende
PURPOSE: The aim of this study was to evaluate the effects of LED and low-intensity laser on the healing of rabbit dental alveoli. METHODS: A total of 18 rabbits were divided into three groups of six; all rabbits underwent surgical extraction of the first lower right premolar. Following surgery, group 1 received LED irradiation, group 2 received laser irradiation, and group 3 were untreated controls. The initial applications of LED and laser began 48 h after tooth extraction and were given perpendicularly to the dental alveoli...
March 23, 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28330949/expression-analysis-of-platelet-derived-growth-factor-receptor-alpha-and-its-ligands-in-the-developing-mouse-lung
#2
Leonor Gouveia, Christer Betsholtz, Johanna Andrae
Activation of the platelet-derived growth factor receptor-α (PDGFRα) signaling pathway is critically important during lung alveogenesis, the process in lung development during which alveoli are formed from the terminal alveolar sacs. Several studies have aimed to characterize the expression patterns of PDGFRα and its two ligands (PDGF-A and -C) in the lung, but published analyses have been limited to embryonic and/or perinatal time points, and no attempts have been made to characterize both receptor and ligand expression simultaneously...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28318536/chromobacterium-violaceum-infection-in-a-horse
#3
Márcia Elisa Hammerschmitt, Veronica Machado Rolim, Gustavo Geraldo Medina Snel, Franciele Maboni Siqueira, David Driemeier, Saulo Petinatti Pavarini
Chromobacterium violaceum is an opportunistic pathogen of mammals that produces characteristic violet pigment in bacterial culture. We report pneumonia and septicaemia caused by C. violaceum in a horse. Necropsy examination was performed on a 3-year-old Quarter Horse stallion with a history of recurrent episodes of pneumonia, fever, dyspnoea and sanguineous nasal discharge. The lungs were not collapsed, but they contained dark red foci mixed with white areas, and multiple nodules of firm consistency. Within the liver and kidney there were randomly distributed, multifocal, white pinpoint lesions (0...
March 16, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28316330/the-microbiota-of-the-respiratory-tract-gatekeeper-to-respiratory-health
#4
REVIEW
Wing Ho Man, Wouter A A de Steenhuijsen Piters, Debby Bogaert
The respiratory tract is a complex organ system that is responsible for the exchange of oxygen and carbon dioxide. The human respiratory tract spans from the nostrils to the lung alveoli and is inhabited by niche-specific communities of bacteria. The microbiota of the respiratory tract probably acts as a gatekeeper that provides resistance to colonization by respiratory pathogens. The respiratory microbiota might also be involved in the maturation and maintenance of homeostasis of respiratory physiology and immunity...
March 20, 2017: Nature Reviews. Microbiology
https://www.readbyqxmd.com/read/28314804/stereological-monitoring-of-mouse-lung-alveolarization-from-the-early-post-natal-period-to-adulthood
#5
Agnieszka Pozarska, José Alberto Rodríguez-Castillo, David Emanuel Surate Solaligue, Aglaia Ntokou, Philipp Rath, Ivana Mižíková, Alicia Madurga, Konstantin Mayer, István Vadász, Susanne Herold, Katrin Ahlbrecht, Werner Seeger, Rory E Morty
Post-natal lung maturation generates a large number of small alveoli, with concomitant thinning of alveolar septal walls, generating a large gas exchange surface area but minimizing the distance traversed by the gases. This demand for a large and thin gas exchange surface area is not met in disorders of lung development, such as bronchopulmonary dysplasia (BPD), histopathologically characterized by fewer, larger alveoli; and thickened alveolar septal walls. Diseases such as BPD are often modeled in the laboratory mouse to better understand disease pathogenesis, or develop new interventional approaches...
March 17, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28304180/nanomedicine-for-the-treatment-of-acute-respiratory-distress-syndrome-the-2016-ats-bear-cage-award-winning-proposal
#6
Jacob S Brenner
After dozens of clinical trials, there are still no FDA-approved drugs which improve mortality in acute respiratory distress syndrome (ARDS). These poor results may in part be caused by three unique pharmacological challenges presented by ARDS: 1) ARDS patients are fragile due to concomitant multiple organ dysfunction, so do not tolerate off-target side effects of drugs; 2) inhaled drug delivery is impeded by the column of proteinaceous fluid covering the injured alveoli; 3) ARDS is heterogeneous in its underlying pathophysiology, so targeting one pathway is unlikely to improve most patients...
March 17, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28292845/lung-organoids-current-uses-and-future-promise
#7
REVIEW
Christina E Barkauskas, Mei-I Chung, Bryan Fioret, Xia Gao, Hiroaki Katsura, Brigid L M Hogan
Lungs are composed of a system of highly branched tubes that bring air into the alveoli, where gas exchange takes place. The proximal and distal regions of the lung contain epithelial cells specialized for different functions: basal, secretory and ciliated cells in the conducting airways and type II and type I cells lining the alveoli. Basal, secretory and type II cells can be grown in three-dimensional culture, with or without supporting stromal cells, and under these conditions they give rise to self-organizing structures known as organoids...
March 15, 2017: Development
https://www.readbyqxmd.com/read/28291369/ultrashort-single-walled-carbon-nanotubes-insert-into-pulmonary-surfactant-monolayer-via-self-rotating-poration-and-mechanical-inhibition
#8
Tongtao Yue, Yan Xu, Shixin Li, Zhen Luo, Xianren Zhang, Fang Huang
It has been widely accepted that longer single-walled carbon nanotubes (SWCNTs) exhibit higher toxicity by causing severe pneumonia once inhaled, yet relatively little is known regarding the potential toxicity of ultrashort SWCNTs, which are of central importance to their development as suitable vehicles for biomedical applications. Here, by combining coarse-grained molecular dynamics (CGMD), pulling simulations, and scaling analysis, we demonstrate that the inhalation toxicity of ultrashort SWCNTs (1.5 nm < l < 5...
March 14, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28287530/open-tracheostomy-gastric-acid-aspiration-murine-model-of-acute-lung-injury-results-in-maximal-acute-nonlethal-lung-injury
#9
Ravi Alluri, Hilliard L Kutscher, Barbara A Mullan, Bruce A Davidson, Paul R Knight
Acid pneumonitis is a major cause of sterile acute lung injury (ALI) in humans. Acid pneumonitis spans the clinical spectrum from asymptomatic to acute respiratory distress syndrome (ARDS), characterized by neutrophilic alveolitis, and injury to both alveolar epithelium and vascular endothelium. Clinically, ARDS is defined by acute onset of hypoxemia, bilateral patchy pulmonary infiltrates and non-cardiogenic pulmonary edema. Human studies have provided us with valuable information about the physiological and inflammatory changes in the lung caused by ARDS, which has led to various hypotheses about the underling mechanisms...
February 26, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28286422/hypersensitivity-pneumonitis-a-complex-lung-disease
#10
REVIEW
Gian Galeazzo Riario Sforza, Androula Marinou
Hypersensitivity pneumonitis (HP), also called extrinsic allergic alveolitis, is a respiratory syndrome involving the lung parenchyma and specifically the alveoli, terminal bronchioli, and alveolar interstitium, due to a delayed allergic reaction. Such reaction is secondary to a repeated and prolonged inhalation of different types of organic dusts or other substances to which the patient is sensitized and hyper responsive, primarily consisting of organic dusts of animal or vegetable origin, more rarely from chemicals...
2017: Clinical and Molecular Allergy: CMA
https://www.readbyqxmd.com/read/28283476/alveolar-non-selective-channels-are-asic1a-%C3%AE-enac-channels-and-contribute-to-afc
#11
Phi T Trac, Tiffany L Thai, Valerie Linck, Li Zou, Megan M Greenlee, Qiang Yue, Otor K Al-Khalili, Abdel A Alli, Amity F Eaton, Douglas C Eaton
A thin fluid layer in alveoli is normal and results from a balance of fluid entry and fluid uptake by transepithelial salt and water reabsorption. Conventional wisdom suggests the reabsorption is via epithelial Na(+) channels (ENaC), but if all Na(+) reabsorption was via ENaC, then amiloride, an ENaC inhibitor, should block AFC. But amiloride blocks only half of AFC. The reason for failure to block is clear from single channel measurements from alveolar epithelial cells: ENaC channels are observed, but another channel is present at the same frequency that is non-selective for Na(+) over K(+), has a larger conductance, and shorter open and closed times...
March 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28282259/study-on-the-pulmonary-delivery-system-of-apigenin-loaded-albumin-nanocarriers-with-antioxidant-activity
#12
Zsófia Edit Pápay, Annamária Kósa, Béla Böddi, Zahra Merchant, Imran Y Saleem, Mohammed Gulrez Zariwala, Imre Klebovich, Satyanarayana Somavarapu, István Antal
BACKGROUND: Respiratory diseases are mainly derived from acute and chronic inflammation of the alveoli and bronchi. The pathophysiological mechanisms of pulmonary inflammation mainly arise from oxidative damage that could ultimately lead to acute lung injury. Apigenin (Api) is a natural polyphenol with prominent antioxidant and anti-inflammatory properties in the lung. Inhalable formulations that consist of nanoparticles (NPs) have several advantages over other administration routes, and therefore, this study investigated the application of apigenin-loaded bovine serum albumin nanoparticles (BSA-Api-NPs) for pulmonary delivery...
March 10, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28272490/distribution-analysis-via-mass-spectrometry-imaging-of-ephedrine-in-the-lungs-of-rats-orally-administered-the-japanese-kampo-medicine-maoto
#13
Takashi Matsumoto, Hirotaka Kushida, Shoko Matsushita, Yoshiyuki Oyama, Takafumi Suda, Junko Watanabe, Yoshio Kase, Mitsutoshi Setou
Maoto, a traditional Japanese Kampo medicine, has been used to treat various respiratory diseases, including respiratory infections and influenza. Ephedrine (EPD), the main ingredient in maoto, is also clinically used to treat respiratory diseases. However, the pharmacokinetics and distribution of EPD in the lungs after the administration of maoto have not been demonstrated. This study aimed to determine the concentrations, distribution, and pharmacokinetics of EPD and its precursor methylephedrine (MEPD) in the lungs of rats orally administered maoto (1 and 4 g/kg)...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28270188/pulmonary-alveolar-proteinosis-and-first-successful-whole-lung-lavage-in-sri-lanka-a-case-report
#14
Janith Galhenage, Buddhika Weerasinghe, Wadasinghe Dilesha, Roshana Constantine, Bandu Gunasena
BACKGROUND: Pulmonary alveolar proteinosis is a rare disease characterized by accumulation of lipoproteinaceous material within alveoli. There are three clinically distinct forms: congenital, acquired and secondary. Whole lung lavage is currently the gold standard therapy for severe cases of pulmonary alveolar proteinosis. In Sri Lanka this is the first reported successful whole lung lavage for a patient with pulmonary alveolar proteinosis. CASE PRESENTATION: We describe the case of a 15-year-old Sri Lankan girl who presented with symptoms of progressive shortness of breath and dry cough for 6 months' duration...
March 8, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28269092/detection-of-crackle-events-using-a-multi-feature-approach
#15
L Mendes, I M Vogiatzis, E Perantoni, E Kaimakamis, I Chouvarda, N Maglaveras, J Henriques, P Carvalho, R P Paiva
The automatic detection of adventitious lung sounds is a valuable tool to monitor respiratory diseases like chronic obstructive pulmonary disease. Crackles are adventitious and explosive respiratory sounds that are usually associated with the inflammation or infection of the small bronchi, bronchioles and alveoli. In this study a multi-feature approach is proposed for the detection of events, in the frame space, that contain one or more crackles. The performance of thirty-five features was tested. These features include thirty-one features usually used in the context of Music Information Retrieval, a wavelet based feature as well as the Teager energy and the entropy...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28260872/reduced-nuclear-translocation-of-serum-response-factor-is-associated-with-skeletal-muscle-atrophy-in-a-cigarette-smoke-induced-mouse-model-of-copd
#16
Ran Ma, Xuefang Gong, Hua Jiang, Chunyi Lin, Yuqin Chen, Xiaoming Xu, Chenting Zhang, Jian Wang, Wenju Lu, Nanshan Zhong
Skeletal muscle atrophy and dysfunction are common complications in the chronic obstructive pulmonary disease (COPD). However, the underlying molecular mechanism remains elusive. Serum response factor (SRF) is a transcription factor which is critical in myocyte differentiation and growth. In this study, we established a mouse COPD model induced by cigarette smoking (CS) exposure for 24 weeks, with apparent pathophysiological changes, including increased airway resistance, enlarged alveoli, and skeletal muscle atrophy...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28260342/-study-on-the-expression-of-epidermal-growth-factor-receptor-protein-during-benzo-a-pyrene-induced-carcinogenesis
#17
P Gu, H L Liu, Y X Deng, W Gao, J J Liu, X F Huang, X Y Li, H Y Huang
Objective: To explore the expression of epidermal growth factor receptor(EGFR) protein during benzo(a)pyrene (BaP) induced carcinogenesis. Methods: This study, we firstly utilized immunofluorescence assay and Western-blot to examine EGFR expression of the BaP which was constructed previously by project team induced malignant transformation human bronchial epithelial cell (BTC) and the control (16HBE cell). Then, we selected 36 healthy SD rats, divided into two groups according to simple random method, 18 rats each group...
March 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28252610/-certain-immunohistochemical-markers-of-the-intravitality-of-strangulation-mechanical-asphyxia
#18
D V Bogomolov, V A Putintsev, Yu V Zbrueva, O P Denisova
Thus article was designed to report the results of the investigations into specific histological features of the skin and soft tissue samples taken from the strangulation areas on the neck and from the lungs of the persons who had committed suicide by hanging. The studies revealed the well apparent expression of fibrinogen in the derma and the subdermal cellolocutaneous layer of the skin subjected to intravital strangulation. Similar changes were absent in lung alveoli.
2017: Sudebno-meditsinskaia Ekspertiza
https://www.readbyqxmd.com/read/28243545/oral-administration-of-heat-killed-lactobacillus-kunkeei-yb38-improves-murine-influenza-pneumonia-by-enhancing-iga-production
#19
Takashi Asama, Takayuki Uematsu, Noritada Kobayashi, Tomoki Tatefuji, Ken Hashimoto
Influenza is one of the important respiratory tract infections that require special attention for maintaining health and hygiene. The removal of influenza virus (IFV) by secretory IgA produced by the respiratory epithelium has been reported to be a critical host defense mechanism. Therefore, we isolated Lactobacillus kunkeei YB38 (YB38), the promoter of the salivary IgA secretion in humans, from honeybee pollen and studied the effect of heat-killed YB38 treatment for preventing IFV infection in a mouse model...
2017: Bioscience of Microbiota, Food and Health
https://www.readbyqxmd.com/read/28241059/exceptionally-prolonged-tooth-formation-in-elasmosaurid-plesiosaurians
#20
Benjamin P Kear, Dennis Larsson, Johan Lindgren, Martin Kundrát
Elasmosaurid plesiosaurians were globally prolific marine reptiles that dominated the Mesozoic seas for over 70 million years. Their iconic body-plan incorporated an exceedingly long neck and small skull equipped with prominent intermeshing 'fangs'. How this bizarre dental apparatus was employed in feeding is uncertain, but fossilized gut contents indicate a diverse diet of small pelagic vertebrates, cephalopods and epifaunal benthos. Here we report the first plesiosaurian tooth formation rates as a mechanism for servicing the functional dentition...
2017: PloS One
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