keyword
MENU ▼
Read by QxMD icon Read
search

AAG

keyword
https://www.readbyqxmd.com/read/28214088/a-case-of-seropositive-autoimmune-autonomic-ganglionopathy-with-diffuse-esophageal-spasm
#1
Nobutoshi Morimoto, Sakuma Takahashi, Tomoki Inaba, Motonori Takamiya, Yasuhiko Kageyama, Mizuki Morimoto, Yoshiaki Takahashi, Hirotake Nishimura, Shunya Nakane, Koji Abe
Autoimmune autonomic ganglionopathy (AAG) is an immune-mediated disorder that leads to various autonomic failures associated with anti-ganglionic acetylcholine receptor antibodies (anti-gAChR-Abs). Diffuse esophageal spasm (DES) is an uncommon esophageal motility disorder. We herein report the case of a 68-year-old woman with DES as a partial symptom of AAG. She presented with chronic esophageal transit failure, constipation, and numbness of the hands and feet, Adie's pupil, thermal hypoalgesia, and decreased deep tendon reflexes...
February 14, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28206819/norrisk-2-a-norwegian-risk-model-for-acute-cerebral-stroke-and-myocardial-infarction
#2
Randi Selmer, Jannicke Igland, Inger Ariansen, Aage Tverdal, Inger Njølstad, Kari Furu, Grethe S Tell, Tor Ole Klemsdal
Background Guidelines for the prevention of cardiovascular disease recommend the estimation of an individual's total risk. We have developed a new model for the prediction of the 10-year risk of incident acute myocardial infarction or cerebral stroke based on Norwegian data, NORRISK 2. Design The model was based on 10-year follow-up of a large population-based cohort (CONOR) through linkage to the CVDNOR project, a database of cardiovascular disease hospital discharge diagnoses and mortality in Norway in 1994-2009...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28182573/amplified-canonical-transforming-growth-factor-%C3%AE-signalling-via-heat-shock-protein-90-in-pulmonary-fibrosis
#3
Zaneta Sibinska, Xia Tian, Martina Korfei, Baktybek Kojonazarov, Janina Susanne Kolb, Walter Klepetko, Djuro Kosanovic, Malgorzata Wygrecka, Hossein Ardeschir Ghofrani, Norbert Weissmann, Friedrich Grimminger, Werner Seeger, Andreas Guenther, Ralph T Schermuly
Interstitial lung fibroblast activation coupled with extracellular matrix production is a pathological signature of idiopathic pulmonary fibrosis (IPF), and is governed by transforming growth factor (TGF)-β/Smad signalling. We sought to define the role of heat shock protein (HSP)90 in profibrotic responses in IPF and to determine the therapeutic effects of HSP90 inhibition in a murine model of pulmonary fibrosis.We investigated the effects of HSP90 inhibition in vitro by applying 17-AAG (17-allylamino-17-demethoxygeldanamycin) to lung fibroblasts and A549 cells and in vivo by administering 17-DMAG (17-dimethylaminoethylamino-17-demethoxygeldanamycin) to mice with bleomycin-induced pulmonary fibrosis...
December 19, 2016: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28153791/hdac6-deacetylates-p53-at-lysines-381-382-and-differentially-coordinates-p53-induced-apoptosis
#4
Hyun-Wook Ryu, Dong-Hee Shin, Dong Hoon Lee, Junjeong Choi, Gyoonhee Han, Kang Young Lee, So Hee Kwon
HDAC6-selective inhibitors represent promising new cancer therapeutic agents, but their precise mechanisms of action are not well understood. In particular, p53's role in HDAC6 inhibitor-induced effects has not been fully elucidated. In this study, we show that an HDAC6-selective inhibitor, A452, increased wild-type p53 levels by destabilizing MDM2, but decreased mutant p53 by inducing MDM2 and inhibiting Hsp90-mutant p53 complex formation. Interestingly, HDAC6 levels inversely correlated with p53 acetylation at lysines 381/382 associated with p53 functional activation...
January 30, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28143869/stabilization-of-notch1-by-the-hsp90-chaperon-is-crucial-for-t-cell-leukemogenesis
#5
Zhaojing Wang, Yufeng Hu, Daibiao Xiao, Jingchao Wang, Chuntao Liu, Yisheng Xu, Xiaomeng Shi, Peng Jiang, Liang Huang, Peng Li, Hudan Liu, Guoliang Qing
PURPOSE: Notch1 deregulation is assuming a focal role in T-cell acute lymphoblastic leukemia (T-ALL). Despite tremendous advances in our understanding of Notch1 transcriptional programs, the mechanisms by which Notch1 stability and turnover are regulated remain obscure. The goal of the present study is to identify intracellular Notch1 (ICN1, the activated form of Notch1) binding partner(s) regulating its stability and activity. EXPERIMENTAL DESIGN: We employed immunoaffinity purification to identify ICN1-associating partner and used co-immunoprecipitation to verify the endogenous protein interaction...
January 31, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28137820/pharmacokinetics-of-clindamycin-in-obese-and-non-obese-children
#6
Michael J Smith, Daniel Gonzalez, Jennifer L Goldman, Ram Yogev, Janice E Sullivan, Michael D Reed, Ravinder Anand, Karen Martz, Katherine Berezny, Daniel K Benjamin, P Brian Smith, Michael Cohen-Wolkowiez, Kevin Watt
Although obesity is prevalent among children in the United States, pharmacokinetic (PK) data in obese children are limited. Clindamycin is a commonly used antibiotic that may require dose adjustment in obese children due to its lipophilic properties. We performed a clindamycin population PK analysis using data from three separate trials. A total of 420 samples from 220 children, 76 of whom had a body mass index ≥ 95(th) percentile for age, were included in the analysis. As compared to other metrics, total body weight (TBW) was the most robust measure of body size...
January 30, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28137667/identification-of-novel-autoantigens-via-mass-spectroscopy-based-antibody-mediated-identification-of-autoantigens-ms-amida-using-immune-thrombocytopenic-purpura-itp-as-a-model-disease
#7
Julian Kamhieh-Milz, Viktor Sterzer, Hatice Celik, Omid Khorramshahi, Reham Fadl Hassan Moftah, Abdulgabar Salama
Immune thrombocytopenic purpura (ITP) is one of the best characterized autoimmune diseases. Autoantibodies (AABs) against platelet antigens are considered as the diagnostic hallmark of ITP, but are detectable in only 50% of patients. We designed and applied a novel proteomic approach termed Mass Spectroscopy-based Antibody-Mediated Identification of Autoantigens (MS-AMIDA) for platelet antigens. Patients were separated into patients with classical AABs [ITP(+)] and patients without AABs [ITP(-)]. Altogether, 181 potential AAGs were found in ITP(+) and 135 AAGs in ITP(-), with 34 and 23 AAGs reproducibly found in two runs of MS-AMIDA...
January 27, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28129160/infill-optimization-for-additive-manufacturing-approaching-bone-like-porous-structures
#8
Jun Wu, Niels Aage, Ruediger Westermann, Ole Sigmund
Porous structures such as trabecular bone are widely seen in nature. These structures are lightweight and exhibit strong mechanical properties. In this paper, we present a method to generate bone-like porous structures as lightweight infill for additive manufacturing. Our method builds upon and extends voxel-wise topology optimization. In particular, for the purpose of generating sparse yet stable structures distributed in the interior of a given shape, we propose upper bounds on the localized material volume in the proximity of each voxel in the design domain...
January 23, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28110959/patterns-of-failure-for-patients-with-glioblastoma-following-o-2-18-f-fluoroethyl-l-tyrosine-pet-and-mri-guided-radiotherapy
#9
Michael Lundemann, Junia Cardoso Costa, Ian Law, Svend Aage Engelholm, Aida Muhic, Hans Skovgaard Poulsen, Per Munck Af Rosenschold
BACKGROUND AND PURPOSE: To evaluate the patterns of failure following clinical introduction of amino-acid O-(2-[(18)F]fluoroethyl)-L-tyrosine (FET)-PET-guided target definition for radiotherapy (RT) of glioblastoma patients. MATERIALS AND METHODS: The first 66 consecutive patients with confirmed histology, scanned using FET-PET/CT and MRI were selected for evaluation. Chemo-radiotherapy was delivered to a volume based on both MRI and FET-PET (PETvol). The volume of recurrence (RV) was defined on MRI data collected at the time of progression according to RANO criteria...
January 19, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28101166/hsp70-inducer-17-allylamino-demethoxygeldanamycin-provides-neuroprotection-via-anti-inflammatory-effects-in-a-rat-model-of-traumatic-brain-injury
#10
Youquan Gu, Jun Chen, Tianhong Wang, Chaoning Zhou, Zhaodong Liu, Lanhua Ma
Traumatic brain injury (TBI) is the predominant cause of mortality in young adults and children living in China. TBI induces inflammatory responses; in addition, tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and IL-6 are important pro-inflammatory cytokines. Considering the observation that Hsp-70 overexpression can exert neuroprotection, identifying a drug that is able to induce the upregulation of Hsp70 has the potential to be a promising therapy for the treatment of neurological diseases. Thus, the present study assessed the clinical effectiveness of an anticancer drug and Hsp70 activator, 17-allylamino-demethoxygeldanamycin (17-AAG), to evaluate its potential as a treatment for patients with TBI...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28092423/-1-h-qnmr-quantification-of-annonaceous-acetogenins-in-crude-extracts-of-annona-muricata-l-fruit-pulp
#11
Natacha Bonneau, Timothé Cynober, Jean-Christophe Jullian, Pierre Champy
INTRODUCTION: Annonaceous acetogenins (AAGs) constitute a group of environmental neurotoxins, possibly implicated in sporadic atypical Parkinsonism/dementia complexes. The recent evidencing of complex mixtures of AAGs in edible fruits and derived food products requires efficient and practical analytical tools for an estimation of human exposure. OBJECTIVE: To develop a simple method for the direct quantitation of the majority of AAGs (sub-types 1a and 1b) within crude extracts, using commonly available (1) H-NMR spectrometers, for food control...
January 16, 2017: Phytochemical Analysis: PCA
https://www.readbyqxmd.com/read/28091979/blood-perfusion-in-osteomyelitis-studied-with-15-o-water-pet-in-a-juvenile-porcine-model
#12
Lars Jødal, Ole L Nielsen, Pia Afzelius, Aage K O Alstrup, Søren B Hansen
BACKGROUND: Osteomyelitis is a serious disease which can be difficult to treat despite properly instituted antibiotic therapy. This appears to be related at least partly to degraded vascularisation in the osteomyelitic (OM) lesions. Studies of perfusion in OM bones are, however, few and not quantitative. Quantitative assessment of perfusion could aid in the selection of therapy. A non-invasive, quantitative way to study perfusion is dynamic [(15)O]water positron emission tomography (PET)...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28067803/regulation-of-viral-replication-apoptosis-and-pro-inflammatory-responses-by-17-aag-during-chikungunya-virus-infection-in-macrophages
#13
Tapas K Nayak, Prabhudutta Mamidi, Abhishek Kumar, Laishram Pradeep K Singh, Subhransu S Sahoo, Soma Chattopadhyay, Subhasis Chattopadhyay
Chikungunya virus (CHIKV) infection has re-emerged as a major public health concern due to its recent worldwide epidemics and lack of control measures. Although CHIKV is known to infect macrophages, regulation of CHIKV replication, apoptosis and immune responses towards macrophages are not well understood. Accordingly, the Raw264.7 cells, a mouse macrophage cell line, were infected with CHIKV and viral replication as well as new viral progeny release was assessed by flow cytometry and plaque assay, respectively...
January 6, 2017: Viruses
https://www.readbyqxmd.com/read/28062368/epothilone-b-based-3-in-1-polymeric-micelle-for-anticancer-drug-therapy
#14
Dae Hwan Shin, Glen S Kwon
Epothilones are microtubule inhibitors that are promising alternatives to paclitaxel due to enhanced anticancer efficacy. While epothilones are slightly more water soluble than paclitaxel and more active against paclitaxel-resistant cells, they still require formulation with Cremophor EL and/or cosolvents and drug resistance still limits therapeutic efficacy. In this report, we showed that the combinational treatment of epothilone B (EpoB), 17-N-allylamino-17-demethoxygeldanamycin (17-AAG, Hsp90 inhibitor), and rapamycin (mTOR inhibitor) displays strong anticancer activity in vitro and in vivo...
February 25, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28053100/heat-shock-protein-90-ensures-efficient-mumps-virus-replication-by-assisting-with-viral-polymerase-complex-formation
#15
Hiroshi Katoh, Toru Kubota, Yuichiro Nakatsu, Maino Tahara, Minoru Kidokoro, Makoto Takeda
: Paramyxoviral RNAs are synthesized by a viral RNA-dependent RNA polymerase (RdRp) consisting of the large (L) protein and its cofactor phosphoprotein (P protein). The L protein is a multifunctional protein that catalyzes RNA synthesis, mRNA capping and mRNA polyadenylation. Growing evidence shows that the stability of several paramyxovirus L proteins is regulated by heat shock protein 90 (Hsp90). In this study, we demonstrated that Hsp90 activity was important for mumps virus (MuV) replication...
January 4, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28052321/canonical-hedgehog-signalling-regulates-hepatic-stellate-cell-mediated-angiogenesis-in-liver-fibrosis
#16
Feng Zhang, Meng Hao, Huanhuan Jin, Zhen Yao, Naqi Lian, Li Wu, Jiangjuan Shao, Anping Chen, Shizhong Zheng
BACKGROUND AND PURPOSE: Hepatic stellate cells (HSCs) are liver-specific pericytes regulating angiogenesis during liver fibrosis. We aimed to elucidate the mechanisms by which hedgehog signalling regulated HSC angiogenic properties and to validate the therapeutic implications. EXPERIMENTAL APPROACH: Rats and mice were treated with carbon tetrachloride for in vivo evaluation of hepatic angiogenesis and fibrotic injury. Diversified molecular approaches including real-time PCR, Western blot, luciferase reporter assay, chromatin immunoprecipitation, electrophoretic mobility shift assay and co-immunoprecipitation were used to investigate the underlying mechanisms in vitro...
March 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28036294/hsp90-n-and-c-terminal-double-inhibition-synergistically-suppresses-bcr-abl-positive-human-leukemia-cells
#17
Chun Chen, Yingting Zhuang, Xianling Chen, Xiaole Chen, Ding Li, Yingjuan Fan, Jianhua Xu, Yuanzhong Chen, Lixian Wu
Heat shock protein 90 (Hsp90) contains amino (N)-terminal domain, carboxyl(C)-terminal domain, and middle domains, which activate Hsp90 chaperone function cooperatively in tumor cells. One terminal occupancy might influence another terminal binding with inhibitor. The Bcr-Abl kinase is one of the Hsp90 clients implicated in the pathogenesis of chronic myeloid leukemia (CML). Present studies demonstrate that double inhibition of the N- and C-terminal termini can disrupt Hsp90 chaperone function synergistically, but not antagonistically, in Bcr-Abl-positive human leukemia cells...
December 28, 2016: Oncotarget
https://www.readbyqxmd.com/read/28032595/prospective-identification-of-resistance-mechanisms-to-hsp90-inhibition-in-kras-mutant-cancer-cells
#18
Arefeh Rouhi, Christina Miller, Sarah Grasedieck, Stefanie Reinhart, Britta Stolze, Hartmut Döhner, Florian Kuchenbauer, Lars Bullinger, Stefan Fröhling, Claudia Scholl
Inhibition of the HSP90 chaperone results in depletion of many signaling proteins that drive tumorigenesis, such as downstream effectors of KRAS, the most commonly mutated human oncogene. As a consequence, several small-molecule HSP90 inhibitors are being evaluated in clinical trials as anticancer agents. To prospectively identify mechanisms through which HSP90-dependent cancer cells evade pharmacologic HSP90 blockade, we generated multiple mutant KRAS-driven cancer cell lines with acquired resistance to the purine-scaffold HSP90 inhibitor PU-H71...
January 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28012306/interaction-of-anticancer-drug-clofarabine-with-human-serum-albumin-and-human-%C3%AE-1-acid-glycoprotein-spectroscopic-and-molecular-docking-approach
#19
Mohammad Rehan Ajmal, Saima Nusrat, Parvez Alam, Nida Zaidi, Mohsin Vahid Khan, Masihuz Zaman, Yasser E Shahein, Mohamed H Mahmoud, Gamal Badr, Rizwan Hasan Khan
The binding interaction between clofarabine, an important anticancer drug and two important carrier proteins found abundantly in human plasma, Human Serum Albumin (HSA) and α-1 acid glycoprotein (AAG) was investigated by spectroscopic and molecular modeling methods. The results obtained from fluorescence quenching experiments demonstrated that the fluorescence intensity of HSA and AAG is quenched by clofarabine and the static mode of fluorescence quenching is operative. UV-vis spectroscopy deciphered the formation of ground state complex between anticancer drug and the two studied proteins...
December 5, 2016: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28009484/hsp90-inhibition-suppresses-inflammatory-response-and-reduces-carotid-atherosclerotic-plaque-formation-in-apoe-mice
#20
Hongmei Mu, Liyong Wang, Lei Zhao
AIM: Emerging evidences indicate that heat shock protein 90 (HSP90) is associated with atherogenesis. However, the effect of HSP90 on plaque stability is largely unknown. In the present study, we explored the role of HSP90 in plaque development and its regulatory mechanisms on vasculature. METHODS: HSP90-overexpression lentivirus (Lenti-HSP90) was used to transfect apoE(-/-) mice after constrictive collars were planted at the right common carotid arteries. RESULTS: As a result, HSP90 gene overexpression led to reduction in en face plaque area, and increase in unstable plaque with heavier accumulation of lipids...
December 23, 2016: Cardiovascular Therapeutics
keyword
keyword
98378
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"