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https://www.readbyqxmd.com/read/29454283/investigating-antibiotics-antibiotic-resistance-genes-and-microbial-contaminants-in-groundwater-in-relation-to-the-proximity-of-urban-areas
#1
Edina Szekeres, Cecilia Maria Chiriac, Andreea Baricz, Tiberiu Szőke-Nagy, Ildiko Lung, Maria-Loredana Soran, Knut Rudi, Nicolae Dragos, Cristian Coman
Groundwater is an essential public and drinking water supply and its protection is a goal for global policies. Here, we investigated the presence and prevalence of antibiotic residues, antibiotic resistance genes (ARGs), mobile genetic elements (MGEs), and microbial contamination in groundwater environments at various distances from urban areas. Antibiotic concentrations ranged from below detection limit to 917 ng/L, being trimethoprim, macrolide, and sulfonamide the most abundant antibiotic classes. A total of eleven ARGs (aminoglycoside, β-lactam, chloramphenicol, Macrolide-Lincosamide-Streptogramin B - MLSB, sulfonamide, and tetracycline), one antiseptic resistance gene, and two MGEs were detected by qPCR with relative abundances ranging from 6...
February 14, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29453412/pulmonary-antigen-encounter-regulates-the-establishment-of-tissue-resident-cd8-memory-t-cells-in-the-lung-airways-and-parenchyma
#2
Sean R McMaster, Alexander N Wein, Paul R Dunbar, Sarah L Hayward, Emily K Cartwright, Timothy L Denning, Jacob E Kohlmeier
Resident memory CD8 T (T RM ) cells in the lung parenchyma (LP) and airways provide heterologous protection against influenza virus challenge. However, scant knowledge exists regarding factors necessary to establish and maintain lung CD8 T RM . Here we demonstrate that, in contrast to mechanisms described for other tissues, airway, and LP CD8 T RM establishment requires cognate antigen recognition in the lung. Systemic effector CD8 T cells could be transiently pulled into the lung in response to localized inflammation, however these effector cells failed to establish tissue residency unless antigen was present in the pulmonary environment...
February 16, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29452815/variable-versus-conventional-lung-protective-mechanical-ventilation-during-open-abdominal-surgery-provar-a-randomised-controlled-trial
#3
P M Spieth, A Güldner, C Uhlig, T Bluth, T Kiss, C Conrad, K Bischlager, A Braune, R Huhle, A Insorsi, F Tarantino, L Ball, M J Schultz, N Abolmaali, T Koch, P Pelosi, M Gama de Abreu
BACKGROUND: Experimental studies showed that controlled variable ventilation (CVV) yielded better pulmonary function compared to non-variable ventilation (CNV) in injured lungs. We hypothesized that CVV improves intraoperative and postoperative respiratory function in patients undergoing open abdominal surgery. METHODS: Fifty patients planned for open abdominal surgery lasting >3 h were randomly assigned to receive either CVV or CNV. Mean tidal volumes and PEEP were set at 8 ml kg -1 (predicted body weight) and 5 cm H 2 O, respectively...
March 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29451852/delta-opioids-neuroprotective-roles-in-preclinical-studies
#4
Shahid Husain
Since ancient times, opioids have been used clinically and abused recreationally. In the early stages (about 1,000 AD) of opium history, an Arab physician, Avicenna, administered opioids to control diarrhea and eye diseases. 1 Opioids have very strong pain relieving properties and they also regulate numerous cellular responses. Opioid receptors are expressed throughout the body, including the nervous system, heart, lungs, liver, gastrointestinal tract, and retina. 2-6 Delta opioid receptors (DORs) are a very attractive target from the perspective of both receptor function and their therapeutic potential...
January 2018: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29451718/kiaa0247-inhibits-growth-migration-invasion-of-non-small-cell-lung-cancer-through-regulating-the-notch-pathway
#5
Yitong Xu, Hongjiu Ren, Jun Jiang, Qiongzi Wang, Muli Wudu, Qingfu Zhang, Hongbo Su, Chenglong Wang, Lihong Jiang, Xueshan Qiu
Lung cancer remains the leading cause of cancer-related death worldwide. Previous studies have shown that the novel KIAA0247 gene potentially targeted by the tumor suppressor p53 may inhibit the development of several cancers. However, the exact function of KIAA0247 in non-small-cell lung cancer (NSCLC) is unknown. The purpose of this study was to clarify the role of KIAA0247 in NSCLC. KIAA0247 expression was evaluated in tumors and adjacent normal tissues of 197 NSCLC patients by immunohistochemistry and real-time PCR and analyzed for association with clinicopathological parameters...
February 16, 2018: Cancer Science
https://www.readbyqxmd.com/read/29451704/mait-cells-and-microbial-immunity
#6
Erin W Meermeier, Melanie J Harriff, Elham Karamooz, David M Lewinsohn
Mucosal-associated invariant T (MAIT) cells, the most abundant T cell subset in humans, are increasingly being recognized for their importance in microbial immunity. MAIT cells accumulate in almost every mucosal tissue examined, including the lung, liver, and intestinal tract, where they can be activated through T cell receptor (TCR) triggering as well as cytokine stimulation in response to a host of microbial products. In this review, we specifically discuss MAIT cell responses to bacterial and fungal infections, with a focus on responses that are both MR1-dependent and -independent, the evidence for diversity in MAIT TCR usage in response to discrete microbial products, protective immunity induced by MAIT cells, and MAIT cell antimicrobial functions in the context of these infections...
February 16, 2018: Immunology and Cell Biology
https://www.readbyqxmd.com/read/29451337/eosinophil-derived-exosomes-contribute-to-asthma-remodelling-by-activating-structural-lung-cells
#7
José A Cañas, Beatriz Sastre, José M Rodrigo-Muñoz, Mar Fernández-Nieto, Pilar Barranco, Santiago Quirce, Joaquín Sastre, Victoria Del Pozo
BACKGROUND: Eosinophils, a central factor in asthma pathogenesis, have the ability to secrete exosomes. However, the precise role played by exosomes in the biological processes leading up to asthma has not been fully defined. OBJECTIVE: We hypothesised that exosomes released by eosinophils contribute to asthma pathogenesis by activating structural lung cells. METHODS: Eosinophils from asthmatic patients and healthy volunteers were purified from peripheral blood, and exosomes were isolated from eosinophils of asthmatic and healthy individuals...
February 16, 2018: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29451040/pulmonary-delivery-of-influenza-vaccine-formulations-in-cotton-rats-site-of-deposition-plays-a-minor-role-in-the-protective-efficacy-against-clinical-isolate-of-h1n1pdm-virus
#8
Yoshita Bhide, Jasmine Tomar, Wei Dong, Jacqueline de Vries-Idema, Henderik W Frijlink, Anke Huckriede, Wouter L J Hinrichs
Administration of influenza vaccines to the lungs could be an attractive alternative to conventional parenteral administration. In this study, we investigated the deposition site of pulmonary delivered liquid and powder influenza vaccine formulations and its relation to their immunogenicity and protective efficacy. In vivo deposition studies in cotton rats revealed that, the powder formulation was mainly deposited in the trachea ( ∼ 65%) whereas the liquid was homogenously distributed throughout the lungs ( ∼ 96%)...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29451010/assessment-of-mycoplasma-gallisepticum-vaccine-efficacy-in-a-co-infection-challenge-model-with-qx-like-infectious-bronchitis-virus
#9
Dauda G Bwala, Solomon Ponman, Neil Duncan, Daniel B R Wandrag, Celia Abolnik
Mycoplasma gallisepticum (MG) is the primary cause of chronic respiratory disease in poultry. We investigated the protective efficacy of the live attenuated ts-11 and 6/85 MG vaccines against a local MG strain, and in order to enhance symptoms and mimic a typical field situation, we co-infected birds with a virulent strain of QX-like infectious bronchitis virus (IBV). Both vaccines showed similar ability to protect infected chickens from clinical signs, although ts-11 performed slightly better. Despite the lower protection against clinical disease, 6/85-vaccinated birds had significantly (P≤0...
February 16, 2018: Avian Pathology: Journal of the W.V.P.A
https://www.readbyqxmd.com/read/29450941/hematogenous-dissemination-of-mesenchymal-stem-cells-from-endometriosis
#10
Fei Li, Myles H Alderman, Aya Tal, Ramanaiah Mamillapalli, Alexis Coolidge, Demetra Hufnagel, Zhihao Wang, Elham Neisani, Stephanie Gidicsin, Graciela Krikun, Hugh S Taylor
Endometriosis is ectopic growth of endometrial tissue traditionally thought to arise through retrograde menstruation. We aimed to determine if cells derived from endometriosis could enter vascular circulation and lead to hematogenous dissemination. Experimental endometriosis was established by transplanting endometrial tissue from DsRed+ mice into the peritoneal cavity of DsRed- mice. Using flow cytometry, we identified DsRed+ cells in blood of animals with endometriosis. The circulating donor cells expressed CXCR4 and mesenchymal stem cell (MSC) biomarkers, but not hematopoietic stem cell markers...
February 16, 2018: Stem Cells
https://www.readbyqxmd.com/read/29450893/dofetilide-for-suppression-of-atrial-fibrillation-in-hypertrophic-cardiomyopathy-a-case-series-and-literature-review
#11
JoEllyn C Moore, Lena Trager, Lucille E Anzia, Walid Saliba, Mohamed Bassiouny, Mandeep Bhargava, Mina Chung, Milind Desai, Ross Garberich, Harry Lever, Bruce D Lindsay, Jay Sengupta, Patrick Tchou, Oussama Wazni, Bruce L Wilkoff
BACKGROUND: Limited medical options are available for rhythm control in patients with atrial fibrillation (AF) and hypertrophic cardiomyopathy (HCM). There are no published reports of dofetilide use in this population. METHODS: A retrospective chart review was conducted on1,404 patients loaded on dofetilide for AF suppression at the Cleveland Clinic from 2008-2012, 25 of whom were found to have HCM. RESULTS: The HCM cohort was 32% female, 76% with persistent AF, mean age of 59 ± 10 years and mean ejection fraction (EF) of 54 ± 9 %...
February 16, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29450214/-mycobacterium-abscessus-complex-infections-a-retrospective-cohort-study
#12
Maroun Sfeir, Marissa Walsh, Rossana Rosa, Laura Aragon, Sze Yan Liu, Timothy Cleary, Marylee Worley, Corey Frederick, Lilian M Abbo
Background: Infections caused by Mycobacterium abscessus group strains are usually resistant to multiple antimicrobials and challenging to treat worldwide. We describe the risk factors, treatment, and clinical outcomes of patients in 2 large academic medical centers in the United States. Methods: A retrospective cohort study of hospitalized adults with a positive culture for M. abscessus in Miami, Florida (January 1, 2011, to December 31, 2014). Demographics, comorbidities, the source of infection, antimicrobial susceptibilities, and clinical outcomes were analyzed...
February 2018: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/29448096/ampk-alleviates-endoplasmic-reticulum-stress-by-inducing-the-er-chaperone-orp150-via-foxo1-to-protect-human-bronchial-cells-from-apoptosis
#13
Ji-Qiang Liu, Li Zhang, Ji Yao, Shuo Yao, Ting Yuan
Chronic obstructive pulmonary disease (COPD), is characterized by inflammation of airways accompanied by a progressive destruction of lung parenchyma. This process is initiated in most cases by cigarette smoking. In this study we investigated the role of AMP activated protein kinase (AMPK) in cigarette smoke extract (CSE)-induced airway epithelial cell apoptosis as a consequence of endoplasmic reticulum stress (ER stress). Exposure of human bronchial epithelial cells (HBEpC) to CSE resulted in apoptosis as detected using Annexin V-PI flow cytometry...
February 12, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29447461/genetic-ablation-of-p16-ink4a-does-not-protect-against-cellular-senescence-in-mouse-models-of-copd-emphysema
#14
Isaac K Sundar, Kahkashan Rashid, Janice Gerloff, Dongmei Li, Irfan Rahman
Cigarette smoke (CS) affects DNA damage and cellular senescence signaling pathways in the pathogenesis of chronic obstructive pulmonary disease (COPD). p16(INK4a) (p16: a cyclin-dependent kinase inhibitor) is a key marker of cellular senescence, which is induced by CS in lung cells. It is thought that removal of p16 attenuates premature aging by removing senesced cells. However, the role of p16 in CS-induced stress induce premature senescence (SIPS) and senescence-associated secretory phenotype (SASP during the development of COPD/emphysema is not known...
February 15, 2018: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/29446874/transplant-recipients-are-vulnerable-under-the-medicare-part-d-benefit
#15
Lisa M Potter, Angela Q Maldonado, Krista L Lentine, Mark A Schnitzler, Zidong Zhang, Gregory P Hess, Edward Garrity, Bertram L Kasiske, David A Axelrod
Transplant immunosuppressants are often used off-label due to insufficient randomized prospective trial data to achieve organ-specific US Food and Drug Administration (FDA) approval. Transplant recipients who rely on Medicare Part D for immunosuppressant drug coverage are vulnerable to coverage denial for off-label prescriptions, unless use is supported by Centers for Medicare & Medicaid Services (CMS)-approved compendia. An integrated data set including national transplant registry data and 3 years of dispensed pharmacy records was used to identify the prevalence of immunosuppression use that is both off-label and not supported by CMS-approved compendia...
February 15, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29446832/an-assessment-of-18-f-fdg-pet-ct-for-thoracic-screening-and-risk-stratification-of-pulmonary-nodules-in-multiple-endocrine-neoplasia-type-1
#16
Alvin So, Owen Pointon, Richard Hodgson, John Burgess
CONTEXT: Bronchopulmonary neuroendocrine tumours (bpNETs) and thymic carcinoid (ThC) are features of Multiple Endocrine Neoplasia Type 1 (MEN 1) and surveillance guidelines recommend periodic thoracic imaging. The optimal thoracic imaging modality and screening frequency remains uncertain as does the prognosis of small lung nodules when identified. OBJECTIVES: To evaluate fluorodeoxyglucose positron emission tomography/computed tomography ( 18 F-FDG PET/CT) for identification and prognostic assessment of thoracic lesions in MEN 1...
February 15, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29446251/a-novel-technique-for-en-bloc-kidney-transplantation-from-infant-donors-with-extremely-low-body-weight-by-using-the-distal-abdominal-aorta-as-an-outflow-tract
#17
Helong Dai, Longkai Peng, Fenghua Peng, Gongbin Lan, Yu Wang, Jingjing Chen, Lei Liu, Chen Gao, Yong Guo, Chunhua Fang, Manhua Nie, Wang Long, Shaojie Yu
Pediatric kidney donors remain underutilized due to the high risk of postoperative thrombosis. To address this problem, we developed a novel en bloc kidney transplantation technique using donor thoracic aorta and the distal abdominal aorta as inflow and outflow tracts, respectively. Briefly, 8 kidneys from deceased infant donors under 5 months old and with low body weight (1.9-4.9 kg) were transplanted en bloc into 4 pediatric and 4 adult patients. The donor's common iliac artery or external iliac artery was anastomosed to the recipient's distal external iliac artery or inferior epigastric artery, respectively, as an outflow tract...
February 15, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29446226/towards-donor-lung-recovery-gene-expression-changes-during-ex-vivo-lung-perfusion-of-human-lungs
#18
Jonathan C Yeung, Ricardo Zamel, William Klement, Xiao-Hui Bai, Tiago N Machuca, Thomas K Waddell, Mingyao Liu, Marcelo Cypel, Shaf Keshavjee
We and others have demonstrated that acellular normothermic ex vivo lung perfusion of high-risk donor lungs can result in post-transplant outcomes equivalent to that of contemporaneous lung transplantation using standard donor lungs. However, the mechanism of this effect remains unclear. Given the restoration of cellular metabolic activity during normothermic perfusion, one possibility is that of lung healing via natural innate recovery mechanisms. We explored this by examining the gene expression changes occurring in human lungs during ex vivo lung perfusion...
February 15, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29445995/long-term-exposure-to-ambient-air-pollution-in-childhood-adolescence-and-lung-function-in-adulthood
#19
A Dubrowski, K Kliś, M Żurawiecka, K Dereń, M Barszcz, D Nowakowski, I Wronka
The aim of the study was to evaluate the effect of air pollution in the dwelling place during childhood-adolescence on respiratory function in early adulthood. The study was conducted in 220 female and 160 male university undergraduates in the cities of Cracow and Wroclaw in Poland and consisted of spirometry to assess lung function. The subjects' exposure to pollution during childhood-adolescence was assessed from the data acquired by the Polish Chief Inspectorate for Environmental Protection. We found differences in all spirometry variables depending on benz[a]piren exposure, in FVC% and FEV 1 /%FVC depending on PM 2...
February 15, 2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29445595/anesthesia-and-analgesia-how-does-the-role-of-anesthetists-changes-in-the-eras-program-for-vats-lobectomy
#20
Federico Piccioni, Riccardo Ragazzi
Enhanced recovery after surgery (ERAS) programs are developed to prevent factors that delay postoperative recovery as well as issues that cause complications. The development of video-assist thoracoscopic surgery (VATS) techniques favors the fast recovery after thoracic procedures. ERAS strategies are based on multidisciplinary approach in which the anesthetist plays an important role from the preoperative to the postoperative phase with several goals. After preoperative evaluation and medical optimization, the anesthetist must ensure a tailored anesthetic plan aiming to a fast recovery and adequate pain relief to reduce the response to the surgical stress...
2018: Journal of Visualized Surgery
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