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https://www.readbyqxmd.com/read/29352004/therapeutic-application-of-an-extract-of-helicobacter-pylori-ameliorates-the-development-of-allergic-airway-disease
#1
Yolanda van Wijck, Stan de Kleijn, Gerrit John-Schuster, Tinne C J Mertens, Pieter S Hiemstra, Anne Müller, Hermelijn H Smits, Christian Taube
Epidemiological and experimental studies have shown that exposure to the gastric bacterium Helicobacter pylori, especially in early life, prevents the development of asthma. Recent mouse studies have shown that this protective effect does not require live bacteria and that treatment with an extract of H. pylori in neonates prevents the development of airway inflammation and goblet cell metaplasia. In the current study, the effect of administration of an extract of H. pylori was assessed in a therapeutic study design with application of the extract just prior to allergen challenge...
January 19, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29351690/the-transcondylar-approach-to-access-symptomatic-arachnoid-cysts-of-the-hypoglossal-canal
#2
Jan-Karl Burkhardt, Christina Bal, Marian Christoph Neidert, Oliver Bozinov
BACKGROUND AND IMPORTANCE: A direct transcondylar approach to treat symptomatic arachnoid cysts of the hypoglossal canal has not yet been described in the literature. CLINICAL PRESENTATION: Here, we present a skull base approach in 2 female patients (68 and 38 yr) with progressive dysphagia, dysarthria, half-sided weakness, and atrophy of the tongue due to an arachnoid cyst of the hypoglossal canal. After patient informed consent, both patients were successfully operated on without complications using a transcondylar approach, and their symptoms improved 3 mo after surgery; in both patients, resection of the cyst was confirmed using magnetic resonance imaging...
February 1, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29351445/impact-of-hiv-infection-on-alpha-1-antitrypsin-in-the-lung
#3
Sarah E Stephenson, Carole L Wilson, Kristina Crothers, Engi F Attia, Cherry Wongtrakool, Irina Petrache, Lynn M Schnapp
BACKGROUND: Emphysema is one of the most common lung diseases in HIV+ individuals. The pathogenesis of HIV-associated emphysema remains unclear; however, radiographic distribution and earlier age of presentation of emphysema in the lungs of HIV+ patients are similar to deficiency of alpha-1 antitrypsin (A1AT), a key elastase inhibitor in the lung. Reduced levels of circulating A1AT have been detected in HIV+ patients, suggesting a potential mechanism for emphysema development. In the present study, we asked if A1AT levels and activity in the bronchoalveolar lavage fluid (BALF) differ in patients with and without HIV and emphysema...
December 14, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29348383/improving-diagnostic-of-pulmonary-tuberculosis-in-hiv-patients-by-bronchoscopy-a-cross-sectional-study
#4
Prayudi Santoso, Arto Y Soeroto, Rianita Juniati, Yovita Hartantri, Rudi Wisaksana, Bachti Alisjabana, Heda M Nataprawira, Ida Parwati
BACKGROUND: diagnostic of pulmonary TB in HIV patients is a problem due to non specific clinical features, or radiological appearance. HIV patients with CD4≤200 cells/mL infected with M. tuberculosis have less capacity in containing M. tuberculosis, developing granulomas, casseous necrosis, or cavities. This condition is caused by weakend inflammatory which later reduced sputum production and may cause false negative result. This study aimed to assess differences in the positivity level of acid fast bacilli (AFB) and cultures of M...
October 2017: Acta Medica Indonesiana
https://www.readbyqxmd.com/read/29348059/synthesis-and-evaluation-of-a-superabsorbent-fertilizer-composite-for-maximizing-the-nutrient-and-water-use-efficiency-in-forestry-plantations
#5
E Tubert, V A Vitali, M S Alvarez, F A Tubert, I Baroli, G Amodeo
Reducing fertilizer use is a priority in the quest for sustainable forestry systems. In short rotation Eucalyptus plantations, NPK pellets are routinely added to the seedling's top soil layer at planting, potentially leading to increased seedling mortality, nutrient loss and environmental degradation. To address this triple challenge, the development of efficient fertilization practices is essential. In the present work, we synthesized a crosslinked acrylic-cellulosic superabsorbent composite (SAPH-BAL) containing small amounts of specific nutrients integrated in the polymer matrix...
January 15, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29346420/initial-acquisition-and-succession-of-the-cystic-fibrosis-lung-microbiome-is-associated-with-disease-progression-in-infants-and-preschool-children
#6
Marianne S Muhlebach, Bryan T Zorn, Charles R Esther, Joseph E Hatch, Conor P Murray, Lidija Turkovic, Sarath C Ranganathan, Richard C Boucher, Stephen M Stick, Matthew C Wolfgang
The cystic fibrosis (CF) lung microbiome has been studied in children and adults; however, little is known about its relationship to early disease progression. To better understand the relationship between the lung microbiome and early respiratory disease, we characterized the lower airways microbiome using bronchoalveolar lavage (BAL) samples obtained from clinically stable CF infants and preschoolers who underwent bronchoscopy and chest computed tomography (CT). Cross-sectional samples suggested a progression of the lower airways microbiome with age, beginning with relatively sterile airways in infancy...
January 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29346393/computational-study-of-hiv-gp120-as-a-target-for-polyanionic-entry-inhibitors-exploiting-the-v3-loop-region
#7
Louis R Hollingsworth, Anne M Brown, Richard D Gandour, David R Bevan
Multiple approaches are being utilized to develop therapeutics to treat HIV infection. One approach is designed to inhibit entry of HIV into host cells, with a target being the viral envelope glycoprotein, gp120. Polyanionic compounds have been shown to be effective in inhibiting HIV entry, with a mechanism involving electrostatic interactions with the V3 loop of gp120 being proposed. In this study, we applied computational methods to elucidate molecular interactions between the repeat unit of the precisely alternating polyanion, Poly(4,4'-stilbenedicarboxylate-alt-maleic acid) (DCSti-alt-MA) and the V3 loop of gp120 from strains of HIV against which these polyanions were previously tested (IIIb, BaL, 92UG037, JR-CSF) as well as two strains for which gp120 crystal structures are available (YU2, 2B4C)...
2018: PloS One
https://www.readbyqxmd.com/read/29346251/combined-endosonography-reduces-time-to-diagnose-pulmonary-coccidioidomycosis
#8
Raj A Shah, Jose J Vempilly, Shaikh M Noor Ul Husnain, Pravachan Hegde
Coccidioidomycosis causes significant morbidity in endemic areas. In the absence of sensitive diagnostic serologic testing, clinicians have increasingly relied on lung and lymph node biopsies for diagnosis. Recently, endobronchial ultrasound guided transbronchial needle aspiration (EBUS-TBNA) has been shown to be an excellent sampling method for the diagnosis and staging of lung cancers, especially when combined with endoscopic ultrasound guided fine needle aspiration (EUS-FNA). We present 13 consecutive cases where EBUS-TBNA and/or EUS-FNA of pulmonary lymph nodes were performed as part of the workup for pulmonary coccidioidomycosis...
January 16, 2018: Journal of Bronchology & Interventional Pulmonology
https://www.readbyqxmd.com/read/29345196/surfactant-protein-c-dampens-inflammation-by-decreasing-jak-stat-activation-during-lung-repair
#9
Huiyan Jin, Andrzej K Ciechanowicz, Alanna R Kaplan, Lin Wang, Ping Xia Zhang, Yi-Chien Lu, Rachel E Tobin, Brooke A Tobin, Lauren Cohn, Caroline J Zeiss, Patty J Lee, Emanuela M Bruscia, Diane S Krause
Surfactant Protein C (SPC), a key component of pulmonary surfactant, also plays a role in regulating inflammation. SPC deficiency in patients and mouse models is associated with increased inflammation and delayed repair, but the key drivers of SPC-regulated inflammation in response to injury are largely unknown. This study focuses on a new mechanism of SPC as an anti-inflammatory molecule using SPC-TK/SPC-KO (surfactant protein C-thymidine kinase/surfactant protein C knockout) mice, which represent a novel sterile injury model that mimics clinical acute respiratory distress syndrome (ARDS)...
January 18, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29345066/protease-activated-receptor-2-is-necessary-for-neutrophil-chemorepulsion-induced-by-trypsin-tryptase-or-dipeptidyl-peptidase-iv
#10
Michael J V White, Luis E Chinea, Darrell Pilling, Richard H Gomer
Compared to neutrophil chemoattractants, relatively little is known about the mechanism neutrophils use to respond to chemorepellents. We previously found that the soluble extracellular protein dipeptidyl peptidase IV (DPPIV) is a neutrophil chemorepellent. In this report, we show that an inhibitor of the protease activated receptor 2 (PAR2) blocks DPPIV-induced human neutrophil chemorepulsion, and that PAR2 agonists such as trypsin, tryptase, 2f-LIGRL, SLIGKV, and AC55541 induce human neutrophil chemorepulsion...
January 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29344664/crucial-role-of-ox40-ox40l-signaling-in-a-murine-model-of-asthma
#11
Wei Lei, Daxiong Zeng, Gaoqin Liu, Yehan Zhu, Jiajia Wang, Hongya Wu, Junhong Jiang, Jianan Huang
The aim of the present study was to explore the roles of OX40/OX40 ligand (OX40L) signaling and OX40+ T cells in ovalbumin (OVA)‑induced mouse asthma model. Asthma was induced by OVA exposure and subsequent co‑treatment with OX40L protein, neutralizing anti‑OX40L blocking antibody, OX40+ T cells or PBS. The protein expression levels of interleukin (IL)‑4, IL‑6, IL‑13, IL‑17, tumor necrosis factor (TNF)‑α and interferon (IFN)‑γ in bronchoalveolar lavage fluid (BALF) were examined using murine cytokine‑specific ELISA...
January 18, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29344480/primary-conjunctival-tuberculosis-presenting-as-dry-eye-a-rare-case-report-and-review-of-the-literature
#12
Rupinder Kaur Brar, Ashok Singh, Archana Hemant Deshpande, Chitrawati Bal Gargade, Sujit Das
Primary conjunctival tuberculosis is very rare in the developed countries. In an endemic country like India, it should be considered in the differential diagnosis of any unusual conjunctival lesion with unilaterality, chronicity, and nonresolution of symptoms after steroid use. We present the case of a 52-year-old female who presented with unilateral itching and blurring of vision for 20 days. There were irregular nodular elevated areas with shrinkage of the lower palpebral conjunctiva. A biopsy of the lesion revealed necrotizing epithelioid cell granulomas along with Langhans type of giant cells...
November 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29343810/mitochondrial-dna-damage-and-subsequent-activation-of-z-dna-binding-protein-1-links-oxidative-stress-to-inflammation-in-epithelial-cells
#13
Bartosz Szczesny, Michela Marcatti, Akbar Ahmad, Mauro Montalbano, Attila Brunyánszki, Sofia-Iris Bibli, Andreas Papapetropoulos, Csaba Szabo
This report identifies mitochondrial DNA (mtDNA) as a target and active mediator that links low-level oxidative stress to inflammatory response in pulmonary epithelial cells. Extrusion of mtDNA into the bronchoalveolar lavage fluid occurs as an early event in mice subjected to cigarette smoke injury, concomitantly with the depletion of mtDNA in the lung tissue. In cultured lung epithelial cells, prolonged, low-level oxidative stress damages the mtDNA, without any detectable damage to the nuclear DNA. In turn, cellular depletion of the mtDNA occurs, together with a transient remodeling of cellular bioenergetics and morphology - all without any detectable impairment in overall cell viability...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343566/attenuation-of-simian-varicella-virus-infection-by-enhanced-green-fluorescent-protein-in-rhesus-macaques
#14
Ravi Mahalingam, Benedikt B Kaufer, Werner J D Ouwendijk, Georges M G M Verjans, Colin Coleman, Meredith Hunter, Arpita Das, Brent E Palmer, Eric Clambey, Maria A Nagel, Vicki Traina-Dorge
Simian varicella virus (SVV), the primate counterpart of varicella zoster virus, causes varicella (chickenpox), establishes latency in ganglia and reactivates to produce zoster. We previously demonstrated that a recombinant SVV expressing the enhanced green fluorescent protein (rSVV.eGFP) is slightly attenuated both in culture and infected monkeys. Herein, we generated two additional recombinant SVVs to visualize infected cells in vitro and in vivo One harbors eGFP fused to the N-terminus of open reading frame (ORF) 9 (rSVV...
January 17, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29342458/glucocorticoids-modulate-th1-and-th2-responses-in-asthmatic-mouse-models-by-inhibition-of-notch1-signaling
#15
Chengping Hu, Zhifang Li, Juntao Feng, Yongjun Tang, Ling Qin, Xinyue Hu, Yan Zhang, Ruoxi He
BACKGROUND: Notch1 has been linked to the pathogenesis of asthma due to its contribution on Th1/Th2 imbalance. γ-Secretase inhibitor (GSI) acts as an effective blocker of Notch1 signaling. Glucocorticoids (GCs) are the most effective anti-inflammatory drugs for asthma. The present study investigated the involvement of the Notch1 pathway in the anti-inflammatory effect of GCs and its association with Th1/Th2 balance. METHODS: The asthma model was established in BALB/c mice by sensitization with ovalbumin (OVA)...
January 18, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29341228/bronchoalveolar-lavage-fluid-neutrophilia-is-associated-with-the-severity-of-pulmonary-lesions-during-equine-asthma-exacerbations
#16
M Bullone, P Joubert, A Gagné, J-Pierre Lavoie, P Hélie
BACKGROUND: The severe form of equine asthma is associated with pathological changes of the peripheral airways and pulmonary parenchyma that are only partly described. Also, the relationship between these structural alterations and the percentage of neutrophils found within the airway lumen, assessed by bronchoalveolar lavage fluid (BALF) cytology, remains ill-defined. OBJECTIVE: To examine the histological lesions associated with equine asthma during disease exacerbation and remission, and their relationship with lung function and BALF neutrophilia...
January 17, 2018: Equine Veterinary Journal
https://www.readbyqxmd.com/read/29339749/volatile-molecules-from-bronchoalveolar-lavage-fluid-can-rule-in-pseudomonas-aeruginosa-and-rule-out-staphylococcus-aureus-infections-in-cystic-fibrosis-patients
#17
Mavra Nasir, Heather D Bean, Agnieszka Smolinska, Christiaan A Rees, Edith T Zemanick, Jane E Hill
Respiratory infections caused by Pseudomonas aeruginosa and Staphylococcus aureus are the leading cause of morbidity and mortality in cystic fibrosis (CF) patients. The authors aimed to identify volatile biomarkers from bronchoalveolar lavage (BAL) samples that can guide breath biomarker development for pathogen identification. BAL samples (n = 154) from CF patients were analyzed using two-dimensional gas chromatography time-of-flight mass spectrometry. Random Forest was used to select suites of volatiles for identifying P...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29339391/intrapulmonary-pharmacokinetics-of-lascufloxacin-in-healthy-adult-volunteers
#18
Hidetoshi Furuie, Sayoko Tanioka, Keiko Shimizu, Shigeru Manita, Masaharu Nishimura, Hisao Yoshida
This study was performed to investigate the intrapulmonary penetration of lascufloxacin in humans. Thirty healthy adult male Japanese subjects, allocated into five groups, received lascufloxacin in single oral dose of 75 mg. Bronchoalveolar lavage and blood sampling were performed simultaneously in each subject at 1, 2, 4, 6, or 24 hours after administration, and lascufloxacin concentrations in plasma, epithelial lining fluid, and alveolar macrophages were determined. Lascufloxacin was rapidly distributed to the epithelial lining fluid with Tmax of 1 hour, which was identical to that in plasma...
January 16, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29339284/rbmti-6-attenuates-pathophysiological-and-inflammatory-parameters-of-induced-emphysema-in-mice
#19
Adriana Feliciano Alves Duran, Luana de Paiva Neves, Flavia Ribeiro Santos da Silva, Gabriel Capella Machado, Graziele Cristina Ferreira, Juliana D Lourenço, Aparecida Sadae Tanaka, Milton de Arruda Martins, Fernanda D T Q S Lopes, Sergio Daishi Sasaki
Protease/anti-protease imbalance is the main pathogenic mechanism of emphysema and protease inhibitors have been recognized as potential molecules to treat the disease conditions. In this work the rBmTI-6 first domain (rBmTI-6-D1), a recombinant Kunitz-type serine proteinase inhibitor, was used to verify its effect in prevention or minimization of PPE-induced emphysema in mice. C57BL/6 mice were submitted to a PPE-induced emphysema model and treated with rBmTI-6-D1 before the emphysema development. We showed that the rBmTI-6-D1 treatment was sufficient to avoid the loss of elastic recoil, an effective decrease in alveolar enlargement and in the number of macrophages and lymphocytes in bronchoalveolar lavage fluid...
January 12, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29338162/endobronchial-lesion-in-eosinophilic-granulomatosis-with-polyangiitis
#20
Guan-Liang Chen, Chun-Han Wu, Wann-Cherng Perng
Eosinophilic granulomatosis with polyangiitis is a systemic vasculitis. It could affect respiratory system, kidney, and central nervous system frequently; however, all body organs could be involved. Asthma and eosinophilic pneumonia are predominant manifestations in respiratory system. Bronchoalveolar lavage or lung biopsy may be used for diagnosis, but endobronchial lesion is not considered as a manifestation of eosinophilic granulomatosis with polyangiitis. Here we present a case of eosinophilic granulomatosis with polyangiitis with unusual endobronchial lesion which was confirmed by endobronchial biopsy...
December 2017: Iranian Journal of Allergy, Asthma, and Immunology
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