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https://www.readbyqxmd.com/read/28213886/dysregulation-of-metabolic-pathways-in-a-mouse-model-of-allergic-asthma
#1
Kevin D Quinn, Michaela Schedel, Yasmeen Nkrumah-Elie, Anthony Joetham, Michael Armstrong, Charmion Cruickshank-Quinn, Richard Reisdorph, Erwin W Gelfand, Nichole Reisdorph
BACKGROUND: Asthma is a complex lung disease resulting from the interplay of genetic and environmental factors. To understand the molecular changes that occur during the development of allergic asthma without genetic and environmental confounders, an experimental model of allergic asthma in mice was used. Our goals were to (1) identify changes at the small molecule level due to allergen exposure, (2) determine perturbed pathways due to disease, and (3) determine whether small molecule changes correlate with lung function...
February 18, 2017: Allergy
https://www.readbyqxmd.com/read/28213123/risk-of-depression-in-patients-with-uterine-leiomyoma-a-nationwide-population-based-cohort-study
#2
Te-Chun Shen, Chih-Yi Yang, Yu-Jhen Huang, Cheng-Li Lin, Fung-Chang Sung
BACKGROUND: Population-based cohort study investigating the depression risk for patients with uterine leiomyoma (UL) is unavailable. This study investigated the subsequent risk of depression among patients with UL in an Asian population. METHODS: Using data from the National Health Insurance Research Database of Taiwan, we established a cohort with 21,168 patients diagnosed with UL between 2000 and 2010, and a non-UL cohort of 82,108 women without UL matched by age and year of diagnosis...
February 14, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28213091/convergence-of-hepcidin-deficiency-systemic-iron-overloading-heme-accumulation-and-rev-erb%C3%AE-%C3%AE-activation-in-aryl-hydrocarbon-receptor-elicited-hepatotoxicity
#3
Kelly A Fader, Rance Nault, Mathew P Kirby, Gena Markous, Jason Matthews, Timothy R Zacharewski
Persistent aryl hydrocarbon receptor (AhR) agonists elicit dose-dependent hepatic lipid accumulation, oxidative stress, inflammation, and fibrosis in mice. Iron (Fe) promotes AhR-mediated oxidative stress by catalyzing reactive oxygen species (ROS) production. To further characterize the role of Fe in AhR-mediated hepatotoxicity, male C57BL/6 mice were orally gavaged with sesame oil vehicle or 0.01-30μg/kg 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) every 4days for 28days. Duodenal epithelial and hepatic RNA-Seq data were integrated with hepatic AhR ChIP-Seq, capillary electrophoresis protein measurements, and clinical chemistry analyses...
February 14, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28209721/the-cumulative-burden-of-double-stranded-dna-virus-detection-after-allogeneic-hct-is-associated-with-increased-mortality
#4
Joshua A Hill, Bryan T Mayer, Hu Xie, Wendy M Leisenring, Meei-Li Huang, Terry Stevens-Ayers, Filippo Milano, Colleen Delaney, Mohamed L Sorror, Brenda M Sandmaier, Garrett Nichols, Danielle M Zerr, Keith R Jerome, Joshua T Schiffer, Michael Boeckh
Strategies to prevent active infection with certain double-stranded DNA (dsDNA) viruses after allogeneic hematopoietic cell transplantation (HCT) are limited by incomplete understanding of their epidemiology and clinical impact. We retrospectively tested weekly plasma samples from allogeneic HCT recipients at our center from 2007-2014. We used quantitative PCR to test for cytomegalovirus (CMV), BK polyomavirus (BKV), human herpesvirus 6B (HHV-6B), HHV-6A, adenovirus (AdV), and Epstein-Barr virus (EBV) between days 0-100 post-HCT...
February 16, 2017: Blood
https://www.readbyqxmd.com/read/28207927/attenuated-airway-hyperresponsiveness-and-mucus-secretion-in-hdm-exposed-igf1r-deficient-mice
#5
S Piñeiro-Hermida, J A Gregory, I P López, R Torrens, C Ruíz-Martínez, M Adner, J G Pichel
BACKGROUND: Asthma is a common chronic lung disease characterized by airflow obstruction, airway hyperresponsiveness (AHR) and inflammation. IGFs have been reported to play a role in asthma but little is known about how the Insulin-like Growth Factor 1 Receptor (IGF1R) affects asthma pathobiology. METHODS: Female Igf1r-deficient and control mice were intranasally challenged with house dust mite (HDM) extract or PBS five days per week for four weeks. Lung function measurements, and bronchioalveolar lavage fluid (BALF), serum and lungs were collected on day 28 for further cellular, histological and molecular analysis...
February 16, 2017: Allergy
https://www.readbyqxmd.com/read/28206673/the-immune-system-as-a-new-possible-cell-target-for-afp-464-in-a-spontaneous-mammary-cancer-mouse-model
#6
Mariana A Callero, Cristina E Rodriguez, Aldana Sólimo, Elisa Bal de Kier Joffé, Andrea I Loaiza Perez
Aminoflavone (AFP 464, NSC 710464), an antitumor agent which recently entered phase II clinical trials, acts against estrogen-positive breast cancer (ER +). AFP 464, which has a unique mechanism of action by activating aryl hydrocarbon receptor (AhR) signaling pathway, decreased tumor size and growth rate in the estrogen dependent, Tamoxifen-sensitive spontaneous M05 mouse model. Considering that AhR has recently emerged as a physiological regulator of the innate and adaptive immune responses, we investigated whether AFP 464 modulates the immune response in our mouse model...
February 16, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28201952/mortality-among-people-living-with-hiv-on-antiretroviral-treatment-in-bali-indonesia-incidence-and-predictors
#7
Sri Utami, Anak Agung Sagung Sawitri, Luh Putu Lila Wulandari, I Wayan Gede Artawan Eka Putra, Putu Ayu Swandewi Astuti, Dewa Nyoman Wirawan, Louise Causer, Bradley Mathers
Indonesia has the third highest number of people living with HIV/AIDS (PLWH) and the greatest increase in proportion of AIDS-related mortality in the Asia Pacific region between 2005 and 2013. Longitudinal mortality data among PLWH in Indonesia are limited. We conducted a retrospective cohort study from medical records of antiretroviral treatment (ART) recipients attending Badung General Hospital (BGH) and Bali Medica Clinic (BMC) between 2006 and 2014. We explored incidence of mortality by Kaplan-Meier analysis and identified predictors using a Cox proportional hazard model...
January 1, 2017: International Journal of STD & AIDS
https://www.readbyqxmd.com/read/28199356/risk-of-dementia-from-proton-pump-inhibitor-use-in-asian-population-a-nationwide-cohort-study-in-taiwan
#8
Shu-Yu Tai, Chen-Yu Chien, Deng-Chyang Wu, Kun-Der Lin, Bo-Lin Ho, Yu-Han Chang, Yang-Pei Chang
INTRODUCTION: Concerns have been raised regarding the potential association between proton pump inhibitor (PPI) use and dementia. OBJECTIVE: This study aimed to examine this association in an Asian population. METHODS: Patients initiating PPI therapy between January 1, 2000 and December 31, 2003 without a prior history of dementia were identified from Taiwan's National Health Insurance Research Database. The outcome of interest was all-cause dementia...
2017: PloS One
https://www.readbyqxmd.com/read/28199353/oral-administration-of-lactobacillus-paracasei-l9-attenuates-pm2-5-induced-enhancement-of-airway-hyperresponsiveness-and-allergic-airway-response-in-murine-model-of-asthma
#9
Xifan Wang, Yan Hui, Liang Zhao, Yanling Hao, Huiyuan Guo, Fazheng Ren
This study investigated allergy immunotherapy potential of Lactobacillus paracasei L9 to prevent or mitigate the particulate matter 2.5 (PM2.5) enhanced pre-existing asthma in mice. Firstly, we used a mouse model of asthma (a 21-day ovalbumin (OVA) sensitization and challenge model) followed by PM2.5 exposure twice on the same day of the last challenge. PM2.5 was collected from the urban area of Beijing and underwent analysis for metals and polycyclic aromatic hydrocarbon contents. The results showed that PM2...
2017: PloS One
https://www.readbyqxmd.com/read/28198561/nursing-home-use-after-implantable-cardioverter-defibrillator-implantation-in-older-adults-results-from-the-national-cardiovascular-data-registry
#10
Daniel B Kramer, Matthew R Reynolds, Sharon-Lise Normand, Craig S Parzynski, John A Spertus, Vincent Mor, Susan L Mitchell
OBJECTIVES: To evaluate the incidence and characteristics of nursing home (NH) use after implantable cardioverter-defibrillator (ICD) implantation. DESIGN: Cohort study. SETTING: Medicare beneficiaries in the National Cardiovascular Data Registry-ICD Registry. PARTICIPANTS: Individuals aged 65 and older receiving ICDs between January 1, 2006, and March 31, 2010 (N = 192,483). MEASUREMENTS: Proportion of ICD recipients discharged to NHs directly after device placement, cumulative incidence of long-term NH admission, and factors associated with immediate discharge to a NH and time to long-term NH admission...
February 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28198024/interaction-of-mammary-bovine-abcg2-with-afb1-and-its-metabolites-and-regulation-by-pcb-126-in-a-mdckii-in-vitro-model
#11
L Manzini, S Halwachs, F Girolami, P Badino, W Honscha, C Nebbia
The ATP-binding cassette efflux transporter ABCG2 plays a key role in the mammary excretion of drugs and toxins in humans and animals. Aflatoxins (AF) are worldwide contaminants of food and feed commodities, while PCB 126 is a dioxin-like PCB which may contaminate milk and dairy products. Both compounds are known human carcinogens. The interactions between AF and bovine ABCG2 (bABCG2) as well as the effects of PCB 126 on its efflux activity have been investigated by means of the Hoechst H33342 transport assay in MDCKII cells stably expressing mammary bABCG2...
February 14, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28197380/the-influence-of-gut-decontamination-prophylactic-antibiotics-on-acute-graft-versus-host-disease-and-survival-following-allogeneic-hematopoietic-stem-cell-transplantation
#12
Bertrand Routy, Caroline Letendre, David Enot, Maxime Chénard-Poirier, Vikram Mehraj, Noémie Charbonneau Séguin, Khaled Guenda, Kathia Gagnon, Paul-Louis Woerther, David Ghez, Silvy Lachance
The intestinal microbiota plays a key role in the pathogenesis of acute graft-versus-host disease (aGVHD). High-dose conditioning regimens given prior to allogeneic hematopoietic stem cell transplantation (aHSCT) modulate the composition of gut microbiota and damage the gut epithelial barrier, resulting in increased systemic inflammation. We assessed whether gut decontamination with antibiotics (ATB) prior to aHSCT influenced the frequency of aGVHD and mortality in 500 patients from two Canadian centers between 2005 and 2012...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28196132/long-term-renal-outcomes-in-patients-with-traumatic-brain-injury-a-nationwide-population-based-cohort-study
#13
Chia-Lin Wu, Chew-Teng Kor, Ping-Fang Chiu, Chun-Chieh Tsai, Ie-Bin Lian, Tao-Hsiang Yang, Der-Cherng Tarng, Chia-Chu Chang
BACKGROUND: Traumatic brain injury (TBI) is an important cause of death and disability worldwide. The relationship between TBI and kidney diseases is largely unknown. METHODS: We aimed to determine whether TBI is associated with long-term adverse renal outcomes. We performed a nationwide, population-based, propensity score-matched cohort study of 32,152 TBI patients and 128,608 propensity score-matched controls. Data were collected by the National Health Insurance Research Database of Taiwan from 2000 to 2012...
2017: PloS One
https://www.readbyqxmd.com/read/28195146/the-inhibition-of-lung-cancer-cell-migration-by-ahr-regulated-autophagy
#14
Chi-Hao Tsai, Ching-Hao Li, Yu-Wen Cheng, Chen-Chen Lee, Po-Lin Liao, Cheng-Hui Lin, Shih-Hsuan Huang, Jaw-Jou Kang
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that is highly expressed in multiple organs and tissues. Whereas AhR mediates the metabolism of xenobiotic and endogenous compounds, its novel function in cancer epithelial-mesenchymal transition (EMT) remains controversial. Autophagy also participates in tumour progression through its functions in cell homeostasis and facilitates adaptation to EMT progression. In the present study, we found that AhR-regulated autophagy positively modulates EMT in non-small cell lung cancer cells...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28194663/cilostazol-use-is-associated-with-reduced-risk-of-dementia-a-nationwide-cohort-study
#15
Shu-Yu Tai, Chen-Yu Chien, Yu-Han Chang, Yuan-Han Yang
Whether antiplatelet agents have a preventive effect on cognitive function remains unknown. We examined the potential association between the use of cilostazol, an antiplatelet agent and cyclic adenosine monophosphate phosphodiesterase 3 inhibitor, and the risk of dementia in an Asian population. Patients initiating cilostazol therapy between 1 January 2004 and 31 December 2009 without a prior history of dementia were identified from Taiwan's National Health Insurance database. Participants were stratified by age, sex, comorbidities, and comedication...
February 13, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28194433/mitochondrial-camkii-inhibition-in-airway-epithelium-protects-against-allergic-asthma
#16
Sara C Sebag, Olha M Koval, John D Paschke, Christopher J Winters, Omar A Jaffer, Ryszard Dworski, Fayyaz S Sutterwala, Mark E Anderson, Isabella M Grumbach
Excessive ROS promote allergic asthma, a condition characterized by airway inflammation, eosinophilic inflammation, and increased airway hyperreactivity (AHR). The mechanisms by which airway ROS are increased and the relationship between increased airway ROS and disease phenotypes are incompletely defined. Mitochondria are an important source of cellular ROS production, and our group discovered that Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) is present in mitochondria and activated by oxidation...
February 9, 2017: JCI Insight
https://www.readbyqxmd.com/read/28192453/refining-criteria-for-selecting-candidates-for-a-safe-lopinavir-ritonavir-or-darunavir-ritonavir-monotherapy-in-hiv-infected-virologically-suppressed-patients
#17
Nicola Gianotti, Alessandro Cozzi-Lepri, Andrea Antinori, Antonella Castagna, Andrea De Luca, Benedetto Maurizio Celesia, Massimo Galli, Cristina Mussini, Carmela Pinnetti, Vincenzo Spagnuolo, Antonella d'Arminio Monforte, Francesca Ceccherini-Silberstein, Massimo Andreoni
OBJECTIVE: The primary objective of this study was to estimate the incidence of treatment failure (TF) to protease inhibitor monotherapies (PI/r-MT) with lopinavir/ritonavir (LPV/r) or darunavir/ritonavir (DRV/r). DESIGN: A multicenter cohort of HIV-infected patients with viral load (VL) ≤50 copies/mL, who underwent a switch from any triple combination therapy to PI/r-MT with either LPV/r or DRV/r. METHODS: VL was assessed in each center according to local procedures...
2017: PloS One
https://www.readbyqxmd.com/read/28192416/mucosal-immunology-rationing-ahr-ligands
#18
Kirsty Minton
No abstract text is available yet for this article.
February 13, 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28192144/maternal-house-dust-mite-exposure-during-pregnancy-enhances-severity-of-hdm-induced-asthma-in-murine-offspring
#19
Phoebe K Richgels, Amnah Yamani, Claire A Chougnet, Ian P Lewkowich
BACKGROUND: Atopic status of the mother and maternal exposure to environmental factors is associated with increased asthma risk. Moreover, animal models demonstrate that exposure to allergens in strongly sensitized mothers influences offspring asthma development, suggesting that in utero exposures can influence offspring asthma. However, it is unclear whether maternal exposure to common human allergens like house dust mite (HDM), in the absence of additional adjuvants, influences offspring asthma development...
February 9, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28192119/leflunomide-induces-nad-p-h-quinone-dehydrogenase-1-enzyme-via-the-aryl-hydrocarbon-receptor-in-neonatal-mice
#20
Amrit Kumar Shrestha, Ananddeep Patel, Renuka T Menon, Weiwu Jiang, Lihua Wang, Bhagavatula Moorthy, Binoy Shivanna
Aryl hydrocarbon receptor (AhR) has been increasingly recognized to play a crucial role in normal physiological homeostasis. Additionally, disrupted AhR signaling leads to several pathological states in the lung and liver. AhR activation transcriptionally induces detoxifying enzymes such as cytochrome P450 (CYP) 1A and NAD(P)H quinone dehydrogenase 1 (NQO1). The toxicity profiles of the classical AhR ligands such as 3-methylcholanthrene and dioxins limit their use as a therapeutic agent in humans. Hence, there is a need to identify nontoxic AhR ligands to develop AhR as a clinically relevant druggable target...
February 10, 2017: Biochemical and Biophysical Research Communications
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