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Alveolar repair

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https://www.readbyqxmd.com/read/28534139/pulmonary-emphysema-cross-linking-with-pulmonary-fibrosis-and-vice-versa-a-non-usual-experimental-intervention-with-elastase-and-bleomycin
#1
Isabella Cattani-Cavalieri, Adriane Graça Reis, Emanuel Kennedy-Feitosa, Vanessa Pinho-Ribeiro, Manuella Lanzetti, Lycia Brito Gitirana, Bruna Romana-Souza, Luis Cristóvão Porto, Samuel Santos Valença
Elastase (PPE) is usually used for emphysema models, whereas bleomycin (BLM) is used for fibrosis models. The aim of this study was to investigate the effect of BLM in PPE-induced emphysema, as well as the effect of PPE in BLM-induced fibrosis. C57BL/6 mice were divided into five groups: control, PPE, BLM, PPE + BLM, and BLM + PPE. Mice received saline, PPE (3 U/mouse), or BLM (20 U/kg) by intranasal instillation. Mice from the BLM and BLM + PPE groups received BLM on day 0 and saline or PPE on day 21, respectively...
May 23, 2017: Inflammation
https://www.readbyqxmd.com/read/28526890/a-heteromeric-molecular-complex-regulates-the-migration-of-lung-alveolar-epithelial-cells-during-wound-healing
#2
Manik C Ghosh, Patrudu S Makena, Joseph Kennedy, Bin Teng, Charlean Luellen, Scott E Sinclair, Christopher M Waters
Alveolar type II epithelial cells (ATII) are instrumental in early wound healing in response to lung injury, restoring epithelial integrity through spreading and migration. We previously reported in separate studies that focal adhesion kinase-1 (FAK) and the chemokine receptor CXCR4 promote epithelial repair mechanisms. However, potential interactions between these two pathways were not previously considered. In the present study, we found that wounding of rat ATII cells promoted increased association between FAK and CXCR4...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28495410/a-case-and-control-multisite-positive-controlled-prospective-study-of-the-safety-and-effectiveness-of-immediate-inferior-alveolar-nerve-processed-nerve-allograft-reconstruction-with-ablation-of-the-mandible-for-benign-pathology
#3
John R Zuniga, Fayette Williams, Daniel Petrisor
PURPOSE: This study determined whether immediate reconstruction of the inferior alveolar nerve with a long (>4.5 cm) processed nerve allograft (PNA) in conjunction with simultaneous ablation and reconstruction of the mandible would be effective in safely restoring subjective sensation and achieving functional sensory recovery. MATERIALS AND METHODS: Patients (5 to 70 yr old) requiring resection of the unilateral or bilateral mandible for benign pathology were included...
April 13, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28479114/bronchopulmonary-dysplasia-where-have-all-the-stem-cells-gone-origin-and-potential-function-of-resident-lung-stem-cells
#4
Marius Alexander Möbius, Bernard Thébaud
Celebrating its 50(th) anniversary in 2017, bronchopulmonary dysplasia (BPD) - the chronic lung disease of prematurity that follows ventilator and O2 therapy for acute respiratory failure - remains the most frequent complication of extreme prematurity. Survival of premature infants born at increasingly earlier stages of gestation has made the prevention of lung injury increasingly challenging. BPD is postulated to be a misdirection of many functions in the developing lung including growth factor signalling and matrix as well as cellular composition, resulting in impaired alveolar and lung vascular growth...
May 4, 2017: Chest
https://www.readbyqxmd.com/read/28454301/immunohistochemical-profile-of-ing3-protein-in-normal-and-cancerous-tissues
#5
Wen-Feng Gou, Xue-Feng Yang, Dao-Fu Shen, Shuang Zhao, Hong-Zhi Sun, Jun-Sheng Luo, Hua-Chuan Zheng
The inhibitor of growth family, member 3 (ING3) protein may be capable of blocking the cell cycle via activating p53-transactivated promoters of p21 and Bcl2-associated X protein, and may induce apoptosis via a Fas/caspase-8-dependent signaling pathway. In the present study, immunohistochemistry was performed in order to characterize the expression profile of ING3 protein in tissue microarrays containing mouse and human normal tissue, human hepatocellular (n=62), renal clear cell (n=62), pancreatic (n=62), esophageal squamous cell (n=45), cervical squamous cell (n=31), breast (n=144), gastric (n=196), colorectal (n=96), ovarian (n=208), endometrial (n=96) and lung carcinoma (n=192)...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28433709/pulmonary-pathobiology-induced-by-zinc-oxide-nanoparticles-in-mice-a-24-hour-and-28-day-follow-up-study
#6
Hsiao-Chi Chuang, Kai-Jen Chuang, Jen-Kun Chen, His-En Hua, Yen-Ling Shen, Wei-Neng Liao, Chii-Hong Lee, Chih-Hong Pan, Kuan-Yuan Chen, Kang-Yun Lee, Ta-Chih Hsiao, Tsun-Jen Cheng
Inhaled zinc oxide nanoparticles (ZnONPs) have high deposition rates in the alveolar region of the lungs; however, the adverse health effects of ZnONPs on the respiratory system are unclear. Herein, pathobiological responses of the respiratory system of mice that received intratracheal administration of ZnONPs were investigated by a combination of molecular and imaging (SPECT and CT) approaches. Also, normal BEAS-2B and adenocarcinoma A549 cells were used to confirm the results in mice. First, female BALB/c mice were administrated a series of doses of 20-nm ZnONPs and were compared to the phosphate-buffered saline control for 24-h and 28-day follow-up observations...
April 19, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28432078/effect-of-4-5-6-7-8-tetrahydro-5-5-8-8-tetramethyl-2-naphthalenyl-carbamoyl-benzoic-acid-am80-on-alveolar-regeneration-in-adiponectin-deficient-mice-showing-a-chronic-obstructive-pulmonary-disease-like-pathophysiology
#7
Hitomi Sakai, Michiko Horiguchi, Tomomi Akita, Chihiro Ozawa, Mai Hirokawa, Yuki Oiso, Harumi Kumagai, Yoshito Takeda, Isao Tachibana, Norikazu Maeda, Chikamasa Yamashita
Chronic obstructive pulmonary disease (COPD) is an intractable pulmonary disease that causes widespread and irreversible alveolar collapse. Although COPD occurs worldwide, only symptomatic therapy is currently available. The objective of the present study was the development of therapeutic agents to eradicate COPD. Therefore, we focused on 4-[(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthalenyl) carbamoyl] benzoic acid (Am80), which is a derivative of all-trans retinoic acid. We evaluated the effects of Am80 on alveolar repair in a novel COPD model of adiponectin-deficient mice...
April 21, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28428174/klotho-an-anti-aging-molecule-attenuates-oxidant-induced-alveolar-epithelial-cell-mtdna-damage-and-apoptosis
#8
Seok-Jo Kim, Paul Cheresh, Mesut Eren, Renea P Jablonski, Anjana Yeldandi, Karen M Ridge, Gr Scott Budinger, Dong-Hyun Kim, Myles S Wolf, Douglas Vaughan, David W Kamp
Alveolar epithelial cell (AEC) apoptosis and inadequate repair resulting from 'exaggerated' lung aging and mitochondrial dysfunction are critical determinants promoting lung fibrosis. α-Klotho, which is an anti-aging molecule that is expressed predominantly in the kidney and secreted in the blood, can protect lung epithelial cells against hyperoxia-induced apoptosis. We reasoned that Klotho protects AEC exposed to oxidative stress in part by maintaining mitochondrial DNA (mtDNA) integrity and mitigating apoptosis...
April 20, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28417017/galectin-1-inhibition-attenuates-profibrotic-signaling-in-hypoxia-induced-pulmonary-fibrosis
#9
Jaymin J Kathiriya, Niyati Nakra, Jenna Nixon, Puja S Patel, Vijay Vaghasiya, Ahmed Alhassani, Zhi Tian, Diane Allen-Gipson, Vrushank Davé
Idiopathic pulmonary fibrosis (IPF) is characterized by lung remodeling arising from epithelial injury, aberrant fibroblast growth, and excessive deposition of extracellular matrix. Repeated epithelial injury elicits abnormal wound repair and lung remodeling, often associated with alveolar collapse and edema, leading to focal hypoxia. Here, we demonstrate that hypoxia is a physiological insult that contributes to pulmonary fibrosis (PF) and define its molecular roles in profibrotic activation of lung epithelial cells...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28413802/first-reported-case-of-alveolar-soft-part-sarcoma-in-constitutional-mismatch-repair-deficiency-syndrome-tumor-spectrum-diagnosed-in-one-of-the-siblings-with-constitutional-mismatch-repair-deficiency
#10
Mitul Bipinchandra Modi, Pratik N Patel, Vishal M Modi, Shailee P Mehta, Ramrao G Nilkanthe, Priyesh H Patel, Priti P Trivedi, Dhaval H Jetly
No abstract text is available yet for this article.
January 2017: South Asian Journal of Cancer
https://www.readbyqxmd.com/read/28402849/uroplakin-3a-cells-are-a-distinctive-population-of-epithelial-progenitors-that-contribute-to-airway-maintenance-and-post-injury-repair
#11
Arjun Guha, Aditya Deshpande, Aradhya Jain, Paola Sebastiani, Wellington V Cardoso
There is evidence that certain club cells (CCs) in the murine airways associated with neuroepithelial bodies (NEBs) and terminal bronchioles are resistant to the xenobiotic naphthalene (Nap) and repopulate the airways after Nap injury. The identity and significance of these progenitors (variant CCs, v-CCs) have remained elusive. A recent screen for CC markers identified rare Uroplakin3a (Upk3a)-expressing cells (U-CCs) with a v-CC-like distribution. Here, we employ lineage analysis in the uninjured and chemically injured lungs to investigate the role of U-CCs as epithelial progenitors...
April 11, 2017: Cell Reports
https://www.readbyqxmd.com/read/28390826/estimation-of-date-of-death-through-wound-healing-of-an-extraction-socket-a-case-report
#12
Joan Viciano, Ruggero D'Anastasio, Cristian D'Ovidio, Sara Costantini, Aldo Carnevale, Luigi Capasso
Surgical extraction of teeth due to dental pathologies is a relatively common procedure in modern man. The healing of the wound that results occurs in gradual and sequential stages, such that the analysis of this repair process can be very useful in forensic investigations on human remains. The following study reports on a particular case where the remodeling of a tooth socket allowed an estimation of the time that had elapsed from the day of the surgical extraction of the tooth to the time of death. The corpse was that of a woman of 34 years...
March 27, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28370323/recombinant-cells-in-the-lung-increase-with-age-via-de-novo-recombination-events-and-clonal-expansion
#13
Takafumi Kimoto, Jennifer E Kay, Na Li, Bevin P Engelward
Homologous recombination (HR) is a critical DNA repair pathway, which is usually error-free, but can sometimes lead to cancer-promoting mutations. Despite the importance of HR as a driver of mutations, the spontaneous frequency of such mutations has proven difficult to study. To gain insight to location, cell type, and subsequent proliferation of mutated cells, we used the Rosa26 Direct Repeat (RaDR) mice for in situ detection and quantification of recombinant cells in the lung. We developed a method for automated enumeration of recombinant cells in lung tissue using the Metafer 4 slide-scanning platform...
April 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/28369014/a-comparative-analysis-of-rhbmp-2-dbm-vs-icbg-for-secondary-alveolar-bone-grafts-in-patients-with-cleft-lip-and-palate-review-of-501-cases
#14
Jeffrey A Hammoudeh, Artur Fahradyan, Daniel D Gould, Fan Liang, Thomas Imahiyerobo, Leo Urbinelli, JoAnna T Nguyen, William Magee, Stephen Yen, Mark M Urata
BACKGROUND: Alveolar cleft reconstruction using iliac crest bone graft(ICBG) is considered standard of care for children with complete cleft lip and palate at the time of mixed dentition. Harvesting bone may result in donor site morbidity, additional operating time and length of hospitalization. Recombinant human bone morphogenetic protein(rhBMP)-2 with a demineralized bone matrix(DBM) was used as an alternative bone source for alveolar cleft reconstruction. We investigate the outcomes of rhBMP-2/DBM versus ICBG for alveolar cleft reconstruction by reviewing postoperative surgical complications and cleft closure...
March 31, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28360109/focal-adhesion-kinase-signaling-determines-the-fate-of-lung-epithelial-cells-in-response-to-tgf-%C3%AE
#15
Qiang Ding, Indhu Subramanian, Tracy R Luckhardt, Pulin Che, Meghna Waghray, Xueke Zhao, Nathaniel Bone, Ashish R Kurundkar, Louise Hecker, Meng Hu, Yong Zhou, Jeffrey Craig Horowitz, Ragini Vittal, Victor J Thannickal
Alveolar epithelial cell (AEC) injury and apoptosis are prominent pathological features of idiopathic pulmonary fibrosis (IPF). There is evidence of AEC plasticity in lung injury repair responses and in IPF. In this report, we explore the role of focal adhesion kinase (FAK) signaling in determining the fate of lung epithelial cells in response to TGF-β1. Rat type II alveolar epithelial cells (RLE-6TN) were treated with or without TGF-β1, and the expression of mesenchymal phenotype and function were analyzed...
March 30, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28339038/lncrna%C3%A2-mediated-sirt1-foxo3a-and-sirt1-p53-signaling-pathways-regulate-type-ii-alveolar-epithelial-cell-senescence-in-patients-with-chronic-obstructive-pulmonary-disease
#16
Chao Gu, Yaqing Li, Jialiang Liu, Xiwang Ying, Yuanshun Liu, Jianping Yan, Chun Chen, Hongbin Zhou, Liming Cao, Yingyu Ma
The loss of alveolar structure and airspace enlargement are major pathological changes in chronic obstructive pulmonary disease (COPD). Type II alveolar epithelial cells (AECII) are involved in maintaining lung tissue repair and alveolar homeostasis. Long non‑coding RNAs (lncRNAs) are involved in multi‑regulating gene transcription, affecting processes including embryonic development, cell differentiation and cellular senescence. The primary aim of the present study was to explore the mechanisms of AECII senescence regulated by lncRNA‑mediated sirtuin 1 (SIRT1) and forkhead box O 3a (FoxO3a) signaling pathways in patients with COPD...
May 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28337871/cytokine-modulation-in-patients-with-idiopathic-pulmonary-fibrosis-undergoing-treatment-with-steroids-immunosuppressants-and-ifn-%C3%AE-1b
#17
S Marinari, V De Iuliis, V Dadorante, S Colella, A Marino, A Nunziata, V Flati, M Caruso, A Pennelli, F De Benedetto, S Matera, S Capodifoglio, S Martinotti, S Caputi, E Toniato
Idiopathic pulmonary fibrosis (IPF) is a chronic lung disease of unknown etiology and pathogenic mechanisms. From an etiopathogenic point of view, alveolar macrophages play a key role in accumulation of fibroblasts and deposition of collagen and extracellular matrix by releasing specific cytokines and inflammatory mediators. IPF seems to be also associated with circulating fibrocytes, which might be involved with an abnormal pulmonary vascular repair and remodeling. Based on its hypothesized pathologic mechanisms, anti-inflammatory, anti-fibrotic and immunosuppressive therapies are often used...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28336306/efficacy-of-acellular-nerve-allografts-in-trigeminal-nerve-reconstruction
#18
Andrew Yampolsky, Vincent Ziccardi, Sung-Kiang Chuang
PURPOSE: During trigeminal nerve repair, a gap is sometimes encountered that prevents the tension-free apposition of nerve endings. The use of a processed acellular nerve allograft is a novel technique that shows promise in overcoming this problem. The goal of the present study was to support the slowly evolving body of evidence that acellular processed nerve allografts (Avance; Axogen, Alachua, FL) are a viable alternative to autogenous nerve grafting and the use of conduits for reconstructing defects of the trigeminal nerve...
February 27, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28333899/-stem-progenitor-cells-in-diseases-of-the-respiratory-tract
#19
EDITORIAL
Tadeusz Płusa
Stem cells (SCs - stem cells) are characterized by plasticity and the ability to differentiate into other cell types. They are obtained from bone marrow, peripheral blood and cord blood. Mesenchymal stem cells (MSCs) shows a broad immunomodulating, increases the number of regulatory T cells (Treg), modifies the activity of T cells, dendritic cells and NK (natural killer). Direct impact on reducing the release of proinflammatory cytokines and increased release of proinflammatory cytokines. Within the respiratory tract has a number of resident stem and progenitor cells referred to as L-MSCs (lung mesenchymal stem cells) whose presence was confirmed by markers as defined in the trachea, epithelial cells and alveolar...
March 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28326722/-application-of-team-approach-and-key-techniques-of-cleft-lip-and-palate
#20
Shi Bing, Fu Yuchuan, Yin Ningbei, Huang Hong-Zhang, Liu Jianhua, Chen Renji, Zhu Hongping, Liu Qiang, Huang Yongqing, Ren Zhanping, Lu Yong, Xiao Wenlin, Song Qinggao, Li Wanshan, Li Sheng, Wang Hongtao, Zhang Junrui, Jiang Liping, Ma Li, Wang Ling, He Dengqi
The development of an expert consensus based on specific domestic situations will provide practical guidance to the efforts aiming at improving cleft care in China. The team approach of twenty-one cleft centers were pooled together, covering pre-surgical orthopedics, primary surgical repair, orthodontic treatment, alveolar bone graft, secondary deformity correction, palatal fistulae repair, the diagnosis and treatment of velopharyngeal incompetence, speech therapy, otitis media management, and skeletal deformity correction...
February 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
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