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https://www.readbyqxmd.com/read/28719697/diagnosis-and-management-of-asthma-in-adults-a-review
#1
Jennifer L McCracken, Sreenivas P Veeranki, Bill T Ameredes, William J Calhoun
Importance: Asthma affects about 7.5% of the adult population. Evidence-based diagnosis, monitoring, and treatment can improve functioning and quality of life in adult patients with asthma. Observations: Asthma is a heterogeneous clinical syndrome primarily affecting the lower respiratory tract, characterized by episodic or persistent symptoms of wheezing, dyspnea, and cough. The diagnosis of asthma requires these symptoms and demonstration of reversible airway obstruction using spirometry...
July 18, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28719390/total-pancreatectomy-with-islet-autotransplantation-recent-updates-and-outcomes
#2
Yoshitaro Shindo, Mazhar A Kanak
PURPOSE OF REVIEW: Total pancreatectomy with islet autotransplantation (TPIAT) is a reliable therapy to retain endocrine function, to alleviate pain and improve quality of life in adult and pediatric patients suffering from refractory chronic pancreatitis and recurrent acute pancreatitis. Recently, an expansion of indications to include benign and malignant pancreatic disease has been suggested. Improved methods for evaluating the functional quality of islets and predicting transplant outcome have been discussed...
July 14, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28719350/characterization-of-candidate-probionts-isolated-from-human-breast-milk
#3
S Khalkhali, N Mojgani
This study was designed to isolate and identify the potential probionts present in 32 healthy mothers' breast milk. Microbial culture media and 16SrRNA sequencing were used to isolate and identify the bacteria and all isolates were analyzed for their antagonistic potential, resistance to acidic pH, bile salts and survival under simulated gastric and intestinal conditions. The colonization potential was further assessed based on adherence to human enterocyte-like Caco-2 cell lines. The breast milk samples harbored significant numbers of Gram positive and catalase negative (85%) bacteria...
May 20, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28719035/melatonin-inhibits-nucleus-pulposus-np-cell-proliferation-and-extracellular-matrix-ecm-remodeling-via-the-melatonin-membrane-receptors-mediated-pi3k-akt-pathway
#4
Zheng Li, Xingye Li, Chong Chen, Matthew T V Chan, William Ka Kei Wu, Jianxiong Shen
Pinealectomy in vertebrates accelerated intervertebral disc degeneration (IDD). However, the potential mechanisms, particularly, melatonin's role is still to be clarified. In this study, for first time, melatonin membrane receptors of MT1 and MT2 were found to be present in the human intervertebral disc tissues and nucleus pulposus (NP) cells, respectively. Melatonin treatment significantly inhibited NP cell proliferation in dose- dependent manner. Accordingly, melatonin down-regulated gene expression of cyclin D1, PCNA, matrix metallopeptidases-3 and -9 and upregulated gene expression of collagen type II alpha 1 chain and aggrecan in NP cells...
July 18, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28718992/melatonin-impedes-tet1-dependent-mglur5-promoter-demethylation-to-relieve-pain
#5
Ming-Chun Hsieh, Yu-Cheng Ho, Cheng-Yuan Lai, Dylan Chou, Hsueh-Hsiao Wang, Gin-Den Chen, Tzer-Bin Lin, Hsien-Yu Peng
Melatonin (N-acetyl-5-methoxytryptamine)/MT2 receptor-dependent epigenetic modification represents a novel pathway in the treatment of neuropathic pain. Because spinal ten-eleven translocation methylcytosine dioxygenase 1 (Tet1)-dependent epigenetic demethylation has recently been linked to pain hypersensitivity, we hypothesized that melatonin/MT2-dependent analgesia involves spinal Tet1-dependent demethylation. Here, we showed that spinal Tet1 gene transfer by intrathecal delivery of Tet1-encoding vectors to naïve rats produced profound and long-lasting nociceptive hypersensitivity...
July 18, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28718898/exposure-to-biologic-therapies-during-conception-and-pregnancy-a-systematic-review
#6
E M Pottinger, R T Woolf, L S Exton, A D Burden, C Nelson-Piercy, C H Smith
Biologic therapies are effective treatments for psoriasis and are often used in women of childbearing age. To evaluate the safety of biologic therapy in conception and/or pregnancy, we have performed a systematic review of Pubmed, MEDLINE, EMBASE and Cochrane databases for multivariable adjusted studies of women exposed to biologic therapy relevant to the treatment of psoriasis during conception and/or pregnancy. We identified four population-based cohort studies involving 1300 women exposed to TNF-α inhibitors (TNFi) 3 months prior to or during the first 3 months of pregnancy...
July 18, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28718891/mk-reduces-inhaled-chlorine-triggered-ahr-and-airway-inflammation-in-the-mouse
#7
Yoichiro Hamamoto, Satoshi Ano, Benoit Allard, Michael O'Sullivan, Toby K McGovern, James G Martin
BACKGROUND AND PURPOSE: Cysteinyl leukotrienes (CysLTs) are pro-inflammatory lipid mediators that exacerbate disease state in several asthma phenotypes including asthma induced by allergen, virus and exercise. However, the role of CysLTs in irritant-induced airway disease is not well characterized. The purpose of the current study was to investigate the effect of montelukast (MK), a CysLT1R antagonist, on parameters of irritant-induced asthma (IIA) induced by inhalation of chlorine (Cl2 ) in the mouse...
July 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28718820/a-transcriptomic-survey-of-ion-channel-based-conotoxins-in-the-chinese-tubular-cone-snail-conus-betulinus
#8
Yu Huang, Chao Peng, Yunhai Yi, Bingmiao Gao, Qiong Shi
Conotoxins in the venom of cone snails (Conus spp.) are a mixture of active peptides that work as blockers, agonists, antagonists, or inactivators of various ion channels. Recently we reported a high-throughput method to identify 215 conotoxin transcripts from the Chinese tubular cone snail, C. betulinus. Here, based on the previous datasets of four transcriptomes from three venom ducts and one venom bulb, we explored ion channel-based conotoxins and predicted their related ion channel receptors. Homologous analysis was also performed for the most abundant ion channel protein, voltage-gated potassium (Kv; with Kv1...
July 18, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28718749/glycinol-enhances-osteogenic-differentiation-and-attenuates-the-effects-of-age-on-mesenchymal-stem-cells
#9
Amy L Strong, Robert B Jones, Julie Glowacki, Stephen M Boue, Matthew E Burow, Bruce A Bunnell
AIM: Phytoestrogens, such as glycinol, have recently gained significant attention as an alternative therapy for osteoporosis due to their structural similarity to estradiol and their bone-generating potential. METHODS: The osteogenic effects of glycinol were investigated in human bone marrow mesenchymal stem cells (BMSCs) derived from older (>50 years old) and younger subjects (<25 years old). RESULTS: BMSCs isolated from older donors demonstrated reduced osteogenesis...
July 18, 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28718296/real-life-management-of-venous-thromboembolism-with-rivaroxaban-results-from-experience-vte-an-italian-epidemiological-survey
#10
Davide Imberti, Giovanni Barillari
Two large randomized controlled trials examined the efficacy and safety of rivaroxaban for the treatment of venous thromboembolism (VTE). The aim of this epidemiological study was to analyze a cohort of Italian patients affected by VTE who were treated with rivaroxaban in clinical practice. The data were collected by physicians using an online electronic questionnaire. The study was performed during a 6-month period from January to June 2014. We analyzed the clinical characteristics, risk factors for VTE, comorbidities, diagnostic techniques, and treatments in the whole population and in the subgroups with deep vein thrombosis (DVT) only, pulmonary embolism (PE) only, and DVT+PE...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28717991/prolonged-bed-rest-impairs-rapid-cpi-17-phosphorylation-and-contraction-in-rat-mesenteric-resistance-arteries-to-cause-orthostatic-hypotension
#11
Toshio Kitazawa, Kazuyo Kitazawa
Prolonged bed rest (PBR) causes orthostatic hypotension (OH). Rapid constriction of splanchnic resistance arteries in response to a sudden increase in sympathetic tone contributes to the recovery of orthostatic arterial pressure upon standing. However, the molecular mechanism of PBR-induced dysfunction in arterial constriction is not fully understood. Previously, we showed that CPI-17, a regulatory protein for myosin phosphatase, mediates α1A-adrenergic receptor-induced rapid contraction of small mesenteric arteries...
July 17, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28717982/characterization-of-zinc-amino-acid-complexes-for-zinc-delivery-in-vitro-using-caco-2-cells-and-enterocytes-from-hipsc
#12
Ann Katrin Sauer, Stefanie Pfaender, Simone Hagmeyer, Laura Tarana, Ann-Kathrin Mattes, Franziska Briel, Sébastien Küry, Tobias M Boeckers, Andreas M Grabrucker
Zn is essential for growth and development. The bioavailability of Zn is affected by several factors such as other food components. It is therefore of interest, to understand uptake mechanisms of Zn delivering compounds to identify ways to bypass the inhibitory effects of these factors. Here, we studied the effect of Zn amino acid conjugates (ZnAAs) on the bioavailabilty of Zn. We used Caco-2 cells and enterocytes differentiated from human induced pluripotent stem cells from a control and Acrodermatitis enteropathica (AE) patient, and performed fluorescence based assays, protein biochemistry and atomic absorption spectrometry to characterize cellular uptake and absorption of ZnAAs...
July 17, 2017: Biometals: An International Journal on the Role of Metal Ions in Biology, Biochemistry, and Medicine
https://www.readbyqxmd.com/read/28717737/rivaroxaban-an-affordable-and-effective-alternative-in-cancer-related-thrombosis
#13
Flávia Dias Xavier, Paulo Marcelo Gehm Hoff, Maria Ignez Braghiroli, Ana Carolina Carvalho Rocha Paterlini, Karla Teixeira Souza, Luiza Dib Batista Bugiato Faria, Fernando Sergio Blumm Ferreira, Karime Kalil Machado, Gustavo Dos Santos Fernandes
BACKGROUND: Venous thromboembolic events (VTEs) are common and potentially fatal complications in cancer patients, and they are responsible for the second most common cause of death. Low molecular weight heparin (LMWH) is the gold-standard treatment, but the costs involved limit its use, especially in developing countries. Recently, the oral anticoagulant rivaroxaban, which directly inhibits factor Xa, was approved for VTE treatment. METHODS: We conducted a retrospective analysis from January 2009 to February 2014 with patients who had cancer and VTE who were receiving rivaroxaban...
February 2017: Journal of Global Oncology
https://www.readbyqxmd.com/read/28717364/serum-free-thyroxine-levels-were-associated-with-pulmonary-hypertension-and-pulmonary-artery-systolic-pressure-in-euthyroid-patients-with-coronary-artery-disease
#14
Bingjie Wu, Jingjing Jiang, Minghui Gui, Lin Liu, Qiqige Aleteng, Shanshan Wang, Xiaojing Liu, Yan Ling, Xin Gao
The aim of this study was to evaluate the association between thyroid hormone levels, pulmonary hypertension (PH), and pulmonary artery systolic pressure (PASP) in euthyroid patients with coronary artery disease (CAD). A cross-sectional study was conducted in individuals who underwent coronary angiography and were diagnosed as CAD from March 2013 to November 2013. 811 subjects (185 women and 626 men) were included in this study. PASP was measured by transthoracic Doppler echocardiography. 86 patients were diagnosed as PH and had significantly higher free thyroxine (FT4) levels than those without PH...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28717219/versatile-functional-roles-of-horizontal-cells-in-the-retinal-circuit
#15
Taro Chaya, Akihiro Matsumoto, Yuko Sugita, Satoshi Watanabe, Ryusuke Kuwahara, Masao Tachibana, Takahisa Furukawa
In the retinal circuit, environmental light signals are converted into electrical signals that can be decoded properly by the brain. At the first synapse of the visual system, information flow from photoreceptors to bipolar cells is modulated by horizontal cells (HCs), however, their functional contribution to retinal output and individual visual function is not fully understood. In the current study, we investigated functional roles for HCs in retinal ganglion cell (RGC) response properties and optokinetic responses by establishing a HC-depleted mouse line...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28717168/dynamics-and-function-of-cxcr4-in-formation-of-the-granule-cell-layer-during-hippocampal-development
#16
Yuka Mimura-Yamamoto, Hiroshi Shinohara, Taichi Kashiwagi, Toru Sato, Seiji Shioda, Tatsunori Seki
In the developing hippocampus, granule cell progenitors (GCPs) arising in the ventricular zone (VZ) migrate to the subpial region, and form the granule cell layer (GCL) of the dentate gyrus (DG). To understand the mechanism of GCL formation, we investigated the dynamics and function of CXCR4 which is expressed by the GCPs and is a receptor of the CXCL12 chemokine secreted by cells surrounding the DG. In the VZ, CXCR4 was expressed on the plasma membrane of the GCPs. During their migration and in the DG, CXCR4 was internalized and accumulated as puncta close to the centrosomes, Golgi apparatus, and lysosomes...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28717123/fungal-infestation-boosts-fruit-aroma-and-fruit-removal-by-mammals-and-birds
#17
Josep E Peris, Ana Rodríguez, Leandro Peña, José María Fedriani
For four decades, an influential hypothesis has posited that competition for food resources between microbes and vertebrates selects for microbes to alter these resources in ways that make them unpalatable to vertebrates. We chose an understudied cross kingdom interaction to experimentally evaluate the effect of fruit infection by fungi on both vertebrate (mammals and birds) fruit preferences and on ecologically relevant fruit traits (volatile compounds, toughness, etc). Our well-replicated field experiments revealed that, in contrast to previous studies, frugivorous mammals and birds consistently preferred infested over intact fruits...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28717104/dexamethasone-induced-hepatomegaly-and-steatosis-in-larval-zebrafish
#18
Guojun Yin, Liping Cao, Jinliang Du, Rui Jia, Takio Kitazawa, Akira Kubota, Hiroki Teraoka
Fish hepatobiliary syndrome, characterized by hepatomegaly and fatty liver, has been frequently reported in many cultured fish species and has caused a dramatic economic loss in China. Glucocorticoids are thought to be important non-nutritional factors for hepatomegaly and fatty liver development. In the present study, a dexamethasone-induced zebrafish model of fatty liver and hepatomegaly was established, and the role of glucocorticoid receptor (GR) in the development of hepatomegaly and fatty liver was investigated using developing zebrafish...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28716982/real-world-setting-comparison-of-nonvitamin-k-antagonist-oral-anticoagulants-versus-vitamin-k-antagonists-for-stroke-prevention-in-atrial-fibrillation-a-systematic-review-and-meta-analysis
#19
George Ntaios, Vasileios Papavasileiou, Konstantinos Makaritsis, Konstantinos Vemmos, Patrik Michel, Gregory Y H Lip
BACKGROUND AND PURPOSE: Evidence from the real-world setting complements evidence coming from randomized controlled trials. We aimed to summarize all available evidence from high-quality real-world observational studies about efficacy and safety of nonvitamin-K oral anticoagulants compared with vitamin-K antagonists in patients with atrial fibrillation. METHODS: We searched PubMed and Web of Science until January 7, 2017 for observational nationwide or health insurance databases reporting matched or adjusted results comparing nonvitamin-K oral anticoagulants versus vitamin-K antagonists in patients with atrial fibrillation...
July 17, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28716964/a-glun2b-selective-nmdar-antagonist-reverses-synapse-loss-and-cognitive-impairment-produced-by-the-hiv-1-protein-tat
#20
Jonathan D Raybuck, Nicholas J Hargus, Stanley A Thayer
HIV-associated neurocognitive disorder (HAND) affects approximately half of HIV-infected patients. Loss of synaptic connections is a hallmark of many neurocognitive disorders, including HAND. The HIV-1 protein transactivator of transcription (Tat) disrupts synaptic connections both in vitro and in vivo and has been linked to impaired neurocognitive function in humans. In vitro studies have shown that ifenprodil, an antagonist selective for GluN2B-containing NMDARs, reverses synapse loss when applied after Tat...
July 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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