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https://www.readbyqxmd.com/read/29775223/curcumin-down-regulates-il-17a-mediated-p53-fibrinolytic-system-in-bleomycin-induced-acute-lung-injury-in-vivo
#1
Mahesh M Gouda, Yashodhar P Bhandary
Bleomycin (BLM) induced cellular damage causes inflammation in the alveolar compartment and impairment of fibrinolytic system leads to alveolar epithelial cell apoptosis. Here, we describe novel inflammatory pathway associated with p53-fibrinolytic system and apoptosis of alveolar epithelial cells and pharmacological efficiency of curcumin against this action. In the present study we used C57BL/6 mice. The specific dose and time interval of curcumin were analyzed to assess the intervention. Experiments were designed to investigate the IL-17A mediated modulation in the alveolar epithelial cell apoptosis and injury...
May 18, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29774637/potassium-octatitanate-fibers-induce-persistent-lung-and-pleural-injury-and-are-possibly-carcinogenic-in-male-fischer-344-rats
#2
Mohamed Abdelgied, Ahmed M El-Gazzar, David B Alexander, William T Alexander, Takamasa Numano, Masaaki Iigou, Aya Naiki-Ito, Hirotsugu Takase, Khaled Abbas Abdou, Akihiko Hirose, Yuhji Taquahashi, Jun Kanno, Hiroyuki Tsuda, Satoru Takahashi
Potassium octatitanate fibers (K2 O•8TiO2 , POT fibers) are widely used as an alternative to asbestos. We investigated the pulmonary and pleural toxicity of POT fibers with reference to 2 non-fibrous titanium dioxide nanoparticles (nTiO2 ), photo-reactive anatase (a-nTiO2 ) and inert rutile (r-nTiO2 ). Ten-week old male F344 rats were administered 0.5 ml of 250-μg/ml suspensions of POT fibers, a-nTiO2 , or r-nTiO2 , eight times (1 mg/rat) over a 15 day period by trans-tracheal intrapulmonary spraying (TIPS)...
May 17, 2018: Cancer Science
https://www.readbyqxmd.com/read/29769438/cytometry-tof-identifies-alveolar-macrophage-subtypes-in-acute-respiratory-distress-syndrome
#3
Eric D Morrell, Alice Wiedeman, S Alice Long, Sina A Gharib, T Eoin West, Shawn J Skerrett, Mark M Wurfel, Carmen Mikacenic
Studies in human peripheral blood monocyte-derived macrophages in vitro have shown clear evidence that multiple macrophage polarization states exist. The extent to which different alveolar macrophage (AM) polarization states exist in homeostasis or in the setting of severe injury such as acute respiratory distress syndrome (ARDS) is largely unknown. We applied single-cell cytometry TOF (CyTOF) to simultaneously measure 36 cell-surface markers on CD45+ cells present in bronchoalveolar lavage from healthy volunteers, as well as mechanically ventilated subjects with and without ARDS...
May 17, 2018: JCI Insight
https://www.readbyqxmd.com/read/29768044/cocl2-induces-apoptosis-via-ros-dependent-pathway-and-drp1-mediated-mitochondria-fission-in-the-periodontal-ligament-stem-cells
#4
Yuting He, Xueqi Gan, Ling Zhang, Beilei Liu, Zhuoli Zhu, Tao Li, Junfei Zhu, Junsheng Chen, Haiyang Yu
Oxygen deficiency is associated with various oral diseases, including chronic periodontitis, age-related alveolar bone loss and mechanical stress-linked cell injury from orthodontic appliances. Nevertheless, our understanding of the impact of hypoxia on periodontal tissues and its biochemical mechanism is still rudimentary. The purpose of this research was to elucidate the effects of hypoxia on the apoptosis of human periodontal ligament stem cells (PDLSCs) in vitro and the underlying mechanism. Herein, we showed that CoCl2 triggered cell dysfunction in human PDLSCs in a concentration-dependent manner and resulted in cell apoptosis and oxidative stress overproduction and accumulation in PDLSCs...
May 16, 2018: American Journal of Physiology. Cell Physiology
https://www.readbyqxmd.com/read/29767652/peripheral-glial-cell-line-derived-neurotrophic-factor-facilitates-the-functional-recovery-of-mechanical-nociception-following-inferior-alveolar-nerve-transection-in-rats
#5
Masahiro Watanabe, Masamichi Shinoda, Dulguun Batbold, Naoyuki Sugano, Shuichi Sato, Koichi Iwata
AIMS: To identify endogenous sources of glial cell line-derived neurotrophic factor (GDNF) at the injury site following inferior alveolar nerve transection (IANX) and to determine whether GDNF signaling promotes the recovery of orofacial pain sensation. METHODS: Nociceptive mechanical sensitivity of the facial skin was assessed following IANX (n = 10) or sham operation (n = 7). GDNF-positive cells were identified and the amount of GDNF measured in the injured region of IANX rats (n = 10) and in sham rats (n = 10)...
May 15, 2018: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29765439/radiographic-features-of-anatomic-relationship-between-impacted-third-molar-and-inferior-alveolar-canal-on-coronal-cbct-images-risk-factors-for-nerve-injury-after-tooth-extraction
#6
Dongmiao Wang, Tangyi Lin, Yanling Wang, Chao Sun, Lianfeng Yang, Hongbing Jiang, Jie Cheng
Introduction: The present study was aimed to identify the radiographic signs between impacted third molar root and inferior alveolar canal (IAC) on cone-beam CT (CBCT) images as risk factors and prognostic predictors associated with inferior alveolar nerve (IAN) damage following tooth removal. Material and methods: A retrospective clinical study was performed involving 136 patients with 257 impacted lower third molars from January 2013 to December 2014. The neurosensory function of the lower lip and chin was subjectively evaluated and assessed by neurosensory tests before and after surgery...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29764588/-correlations-between-ape1-ref-1-icam-1-and-il-17a-levels-in-serum-and-radiation-pneumonitis-for-local-advanced-non-small-cell-lung-cancer-patients
#7
Leiming Guo, Gaofeng Ding, Wencai Xu, Hong Ge, Yue Jiang, Yufei Lu
BACKGROUND: The main manifestations of radiation pneumonitis are injury of alveolar epithelial and endothelial cells, abnormal expression of cytokines, abnormal proliferation of fibroblasts and synthesis of fibrous matrix. The occurrence of radiation pneumonitis is associated with multiplecytokine level abnormality. These cytokines can also be used as bio-markers to predict the occurrence of radiation pneumonitis. This study was to evaluate the correlation between the change of apurinic/apyrimidinic endonuclease 1/redox factor-1 (Ape1/Ref-1), intercellular adhesion molecules 1 (ICAM-1) and interleukin-17A (IL-17A) before and after radiotherapy and radiation pneumonitis for local advanced non-small cell lung cancer (NSCLC) patients with concurrent chemoradiotherapy...
May 20, 2018: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
https://www.readbyqxmd.com/read/29764547/-comparison-of-lung-protection-for-hydrochloric-acid-or-oleic-acid-induced-rat-acute-respiratory-distress-syndrome-models-pretreated-with-penehyclidine
#8
Yumei Cheng, Zhou Yang, Feng Shen, Bo Liu, Yahui Wang, Yanqi Wu, Ling Yao, Yuqing Liu
OBJECTIVE: To compare the lung protection roles of intraperitoneal pre-injection with penehyclidine for two kinds of rat models with pulmonary and extrapulmonary acute respiratory distress syndrome (ARDSp and ARDSexp). METHODS: Forty healthy adult Sprague-Dawley (SD) rats were randomly divided into five groups (each n = 8): the rats in sham group received only tracheotomy; the ARDS rat models were reproduced by intratracheal inhalation of 0.1 mol/L hydrochloric acid (HCl) 2 mL/kg to simulate ARDSexp (HCl group) and 0...
May 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29763900/c-prosp-b-a-possible-biomarker-for-pulmonary-diseases
#9
Nicolas Kahn, Anne-Kathrin Rossler, Katrin Hornemann, Thomas Muley, Ekkehard Grünig, Werner Schmidt, Felix J F Herth, Michael Kreuter
BACKGROUND: Detection of surfactant proteins A and D (SP-A and SP-D) in the serum of patients with pulmonary diseases is thought to reflect an injury of the alveolar epithelial barrier and as such serve as a biomarker for these diseases. However, the data for SP-B are limited. OBJECTIVES: The aim of this feasibility study was to assess whether immature SP-B pre-proteins might have value as a possible biomarker for pulmonary diseases. METHODS: In serum samples from patients with different chronic lung diseases (interstitial lung diseases [ILDs], chronic obstructive pulmonary disease, asthma, lung cancer, pulmonary hypertension, inflammation, patients on ventilator support; total n = 283), C-proSP-B was measured using an electrochemiluminescence immunoassay based on mouse monoclonal anti-C-proSP-B antibodies...
May 15, 2018: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/29755808/the-role-of-duration-of-hyperbaric-oxygen-therapy-on-lung-injury-an-experimental-study-lung-injury-and-hyperbaric-oxygen-therapy
#10
Menduh Oruç, Bennur Esen, Maşuk Taylan, Yusuf Nergis, Atalay Şahin
OBJECTIVES: We aim to histopathologically analyze the effect of hyperbaric oxygen (HBO) therapy in the lung tissue. MATERIAL AND METHODS: A total of 21 rabbits were divided into three groups, with each containing seven rabbits. Group 1 was the control group. Group 2 underwent HBO of 3 atmosphere absolute (ATA) for 90 min/day for 7 days. In group 3, HBO at 3 ATA was administered 90 min/day for 28 days. Oxygen saturation (SpO2 ) was determined by pulse oximetry before and after administration of HBO...
April 2018: Turkish Thoracic Journal
https://www.readbyqxmd.com/read/29755641/ischemic-preconditioning-attenuates-acute-lung-injury-after-partial-liver-transplantation
#11
Qinlong Liu, Hasibur Rehman, Yasodha Krishnasamy, John J Lemasters, Zhi Zhong
Pulmonary complications frequently occur after liver transplantation and are often life-threatening. Thus, we investigated whether hepatic ischemic preconditioning (IP) attenuates acute lung injury (ALI) after small-for-size liver transplantation. Rat livers were explanted after 9-min ischemia plus 5-min reperfusion, reduced to 50% of original size ex vivo , and implanted into recipients with approximately twice the donor body weight, resulting in quarter-size liver grafts (QSG). After QSG transplantation, hepatic Toll-like receptor 4 (TLR4) and tumor necrosis factor-α (TNFα ) expression increased markedly and high mobility group box-1 (HMGB1), an endogenous damage-associated molecular pattern molecule (DAMP), was released from QSG into the blood...
2018: International Journal of Physiology, Pathophysiology and Pharmacology
https://www.readbyqxmd.com/read/29753380/chronic-alcohol-ingestion-impairs-rat-alveolar-macrophage-phagocytosis-via-disruption-of-rage-signaling
#12
Bashar S Staitieh, Eduardo E Egea, Xian Fan, Adaugo Amah, David M Guidot
BACKGROUND: Alcohol significantly impairs antioxidant defenses and innate immune function in the lung and increases matrix metalloproteinase 9 (MMP-9) activity. The receptor for advanced glycation end products (RAGE) is a well-characterized marker of lung injury that is cleaved by MMP-9 into soluble RAGE and has not yet been examined in the alcoholic lung. We hypothesized that chronic alcohol ingestion would impair RAGE signaling via MMP-9 in the alveolar macrophage and thereby impair innate immune function...
May 2018: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/29752961/dihydroartemisinin-alleviates-oxidative-stress-in-bleomycin-induced-pulmonary-fibrosis
#13
Dong-Xia Yang, Jun Qiu, Hui-Hui Zhou, Yan Yu, Dong-Li Zhou, Yan Xu, Ming-Zhe Zhu, Xing-Ping Ge, Jing-Min Li, Chang-Jun Lv, Hong-Qin Zhang, Wen-Dan Yuan
AIMS: Dihydroartemisinin has been shown to inhibit the development of pulmonary fibrosis in rats, but its mechanism has yet to be elucidated. This study aimed to determine the mechanisms of dihydroartemisinin in bleomycin-induced pulmonary fibrosis in a rat model. MAIN METHODS: Morphological changes and collagen deposition were analyzed via hematoxylin-eosin staining and Masson staining and the expression of biotic-factor-related oxidative stress in lung tissues was assayed with standard assay kits...
May 9, 2018: Life Sciences
https://www.readbyqxmd.com/read/29752900/ubiquitin-proteasome-signaling-in-lung-injury
#14
REVIEW
Natalia D Magnani, Laura A Dada, Jacob I Sznajder
Cell homeostasis requires precise coordination of cellular protein function. Ubiquitination is a post-translational modification that modulates protein half-life and function, and is tightly regulated by ubiquitin E3 ligases and deubiquitinating enzymes. Lung injury can progress to acute respiratory distress syndrome, which is characterized by an inflammatory response and disruption of the alveolo-capillary barrier resulting in alveolar edema accumulation and hypoxemia. Ubiquitination plays an important role in the pathobiology of acute lung injury as it regulates the proteins modulating the alveolo-capillary barrier and the inflammatory response...
April 23, 2018: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29752619/a-feasibility-study-into-adenosine-triphosphate-measurement-in-exhaled-breath-condensate-a-potential-bedside-method-to-monitor-alveolar-deformation
#15
Philip van der Zee, Peter Somhorst, Jeroen Molinger, Djo Hasan, Diederik Gommers
Recent research suggested an important role for pulmonary extracellular adenosine triphosphate (ATP) in the development of ventilation-induced lung injury. This injury is induced by mechanical deformation of alveolar epithelial cells, which in turn release ATP to the extracellular space. Measuring extracellular ATP in exhaled breath condensate (EBC) may be a non-invasive biomarker for alveolar deformation. Here, we study the feasibility of bedside ATP measurement in EBC. We measured ATP levels in EBC in ten subjects before and after an exercise test, which increases respiratory parameters and alveolar deformation...
May 12, 2018: Purinergic Signalling
https://www.readbyqxmd.com/read/29748216/intrinsic-anti-inflammatory-properties-in-the-serum-of-two-species-of-deep-diving-seal
#16
Aranya Bagchi, Annabelle J Batten, Milton Levin, Kaitlin N Allen, Michael L Fitzgerald, Luis A Hückstädt, Daniel P Costa, Emmanuel S Buys, Allyson G Hindle
Weddell and elephant seals are deep diving mammals, which rely on lung collapse to limit nitrogen absorption and prevent decompression injury. Repeated collapse and re-expansion exposes the lungs to multiple stressors, including ischemia/reperfusion, alveolar shear stress, and inflammation. There is no evidence, however, that diving damages pulmonary function in these species. To investigate potential protective strategies in deep-diving seals, we examined the inflammatory response of seal whole blood exposed to lipopolysaccharide (LPS), a potent endotoxin...
May 10, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29747165/bones-heal-teeth-don-t-the-involvement-of-dentists-in-the-acute-and-long-term-management-of-patients-injured-in-the-manchester-arena-bomb
#17
L Timms, J May
This paper outlines the involvement of dentists in the treatment of patients following the terror attack at Manchester Arena on 22 May 2017. It predominantly describes the role of the authors - a paediatric dental consultant and maxillofacial surgery dental core trainee (DCT). As a result of the incident a number of patients suffered oro-facial injuries, with many treated at Central Manchester Foundation Trust Hospitals' Manchester Royal Infirmary and Royal Manchester Children's Hospital. The major incident response of the trust is discussed, as are the presentation of blast injuries and corresponding NHS guidance...
May 11, 2018: British Dental Journal
https://www.readbyqxmd.com/read/29745252/changes-in-the-pattern-of-fibrosis-in-the-rat-lung-with-repetitive-orotracheal-instillations-of-gastric-contents-evidence-of-persistent-collagen-accumulation
#18
Pedro Ayala, Jorge Torres, Raul Vivar, Pablo R Olmos, Manuel Meneses, Gisella R Borzone
Recurrent aspiration of gastric contents has been associated with several interstitial lung diseases. Despite this association, the pathogenic role of aspiration in these diseases has been poorly studied and little is known about extracellular matrix (ECM) changes in animal models of repetitive events of aspiration. Our aim was to study the repair phase of lung injury induced by each of several instillations of gastric fluid in Sprague-Dawley rats to evaluate changes in ECM and their reversibility. Anesthetized animals received weekly orotracheal instillations of gastric fluid for 1, 2, 3 and 4 weeks and were sacrificed at day 7 after last instillation...
May 10, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29745251/amd3100-ameliorates-cigarette-smoke-induced-emphysema-like-manifestations-in-mice
#19
Daria Barwinska, Houssam Oueini, Christophe Poirier, Marjorie E Albrecht, Natalia V Bogatcheva, Matthew J Justice, Jacob Saliba, Kelly S Schweitzer, Hal E Broxmeyer, Keith L March, Irina Petrache
We have shown that cigarette smoke (CS)-induced pulmonary emphysema-like manifestations are preceded by marked suppression of the number and function of bone marrow hematopoietic progenitor cells (HPC). To investigate if a limited availability of HPC may contribute to CS-induced lung injury, we used an FDA-approved antagonist of the interactions of SDF-1 with its receptor CXCR4 to promote intermittent HPC mobilization and tested its ability to limit emphysema-like injury following chronic CS. We administered AMD3100 (5mg/kg) to mice during a chronic CS exposure protocol of up to 24 weeks...
May 10, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29743121/high-frequency-oscillatory-ventilation-guided-by-transpulmonary-pressure-in-acute-respiratory-syndrome-an-experimental-study-in-pigs
#20
Philipp Klapsing, Onnen Moerer, Christoph Wende, Peter Herrmann, Michael Quintel, Annalen Bleckmann, Jan Florian Heuer
BACKGROUND: Recent clinical studies have not shown an overall benefit of high-frequency oscillatory ventilation (HFOV), possibly due to injurious or non-individualized HFOV settings. We compared conventional HFOV (HFOVcon ) settings with HFOV settings based on mean transpulmonary pressures (PLmean ) in an animal model of experimental acute respiratory distress syndrome (ARDS). METHODS: ARDS was induced in eight pigs by intrabronchial installation of hydrochloric acid (0...
May 9, 2018: Critical Care: the Official Journal of the Critical Care Forum
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