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https://www.readbyqxmd.com/read/28548028/developmental-differences-between-newborn-and-adult-mice-in-response-to-romiplostim
#1
Katherine A Sparger, Haley Ramsey, Viola Lorenz, Zhi-Jian Liu, Henry A Feldman, Nan Li, Tahirih Laforest, Martha C Sola-Visner
Thrombocytopenia is frequent among sick neonates. While most cases are transient, some neonates experience prolonged and severe thrombocytopenia. These infants often pose diagnostic and therapeutic challenges, and may receive large numbers of platelet transfusions. Romiplostim (ROM) is a thrombopoietin (TPO)-receptor-agonist approved for treatment of adults with chronic immune thrombocytopenia (ITP). The immature platelet fraction (IPF) is a novel measure of newly produced platelets, which could aid with the diagnostic evaluation of thrombocytopenic neonates...
May 26, 2017: Platelets
https://www.readbyqxmd.com/read/28545725/can-intermittent-pneumatic-compression-ipc-reduce-time-to-surgery-for-malleolar-fractures
#2
K B Arndt, A Jordy, B Viberg
BACKGROUND: Surgery of malleolar fractures are often delayed due to oedema of the ankle. The use of intermittent pneumatic compression (IPC) is thought to reduce oedema of the fracture site and thereby time to surgery in patients with malleolar fractures. PURPOSE: To investigate the influence of IPC on the time from admission to surgery in adult patients with internal fixated primary malleolar fractures. METHODS: February 1st 2013 IPC was introduced as a standard treatment for all patients admitted with a malleolar fracture...
May 19, 2017: Injury
https://www.readbyqxmd.com/read/28545277/-effect-of-the-ischemic-post-conditioning-on-the-prevention-of-the-cardio-renal-damage-in-patients-with-acute-st-segment-elevation-myocardial-infarction-after-primary-percutaneous-coronary-intervention
#3
Y Y Wang, T Li, Y W Liu, B J Liu, X M Hu, Y Wang, W Q Gao, P Wu, L Huang, X Li, W J Peng, M Ning
Objective: To evaluate the effect of the ischemic post-conditioning (IPC) on the prevention of the cardio-renal damage in patients with acute ST-segment elevation myocardial infarction (STEMI) after primary percutaneous coronary intervention (PPCI). Methods: A total of 251 consecutive STEMI patients underwent PPCI in the heart center of Tianjin Third Central Hospital from January 2012 to June 2014 were enrolled in this prospective, randomized, control, single-blinded, clinical registry study. Patients were randomly divided into IPC group (123 cases) and control group (128 cases) with random number table...
April 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28536472/quantifying-the-area-at-risk-of-myocardial-infarction-in-vivo-using-arterial-spin-labeling-cardiac-magnetic-resonance
#4
Rachel K Dongworth, Adrienne E Campbell-Washburn, Hector A Cabrera-Fuentes, Heerajnarain Bulluck, Thomas Roberts, Anthony N Price, Sauri Hernández-Reséndiz, Roger J Ordidge, David L Thomas, Derek M Yellon, Mark F Lythgoe, Derek J Hausenloy
T2-weighted cardiovascular magnetic resonance (T2-CMR) of myocardial edema can quantify the area-at-risk (AAR) following acute myocardial infarction (AMI), and has been used to assess myocardial salvage by new cardioprotective therapies. However, some of these therapies may reduce edema, leading to an underestimation of the AAR by T2-CMR. Here, we investigated arterial spin labeling (ASL) perfusion CMR as a novel approach to quantify the AAR following AMI. Adult B6sv129-mice were subjected to in vivo left coronary artery ligation for 30 minutes followed by 72 hours reperfusion...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28530305/ultrathin-coox-modified-hematite-with-low-onset-potential-for-solar-water-oxidation
#5
Chun Du, Jun Wang, Xiao Liu, Jie Yang, Kun Cao, Yanwei Wen, Rong Chen, Bin Shan
Photoelectrochemical water splitting holds great potential for solar energy conversion and storage with zero greenhouse gas emission. Integration of a suitable co-catalyst with an absorber material enables the realization of highly efficient photocleavage of water. Herein, nanostructured hematite film was coated with an ultrathin and conformal CoOx overlayer through atomic layer deposition (ALD). The best performing hybrid hematite with a 2-3 nm ALD CoOx overlayer yielded a remarkable turn on potential of 0...
May 22, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28520973/mode-of-action-analysis-for-rat-hepatocellular-tumors-produced-by-the-synthetic-pyrethroid-momfluorothrin-evidence-for-activation-of-the-constitutive-androstane-receptor-car-and-mitogenicity-in-rat-hepatocytes
#6
Yu Okuda, Masahiko Kushida, Kayo Sumida, Hirohisa Nagahori, Yoshimasa Nakamura, Hashihiro Higuchi, Satoshi Kawamura, Brian G Lake, Samuel M Cohen, Tomoya Yamada
High dietary levels of momfluorothrin, a non-genotoxic synthetic pyrethroid, induced hepatocellular tumors in male and female Wistar rats in a 2-year bioassay. The mode of action (MOA) for rat hepatocellular tumors was postulated to occur via activation of the constitutive androstane receptor (CAR), as momfluorothrin is a close structural analogue of the pyrethroid metofluthrin, which is known to produce rat liver tumors through a CAR-mediated MOA. To elucidate the MOA for rat hepatocellular tumor formation by momfluorothrin, this study was conducted to examine effects on key and associative events of the CAR-mediated MOA for phenobarbital based on the International Programme on Chemical Safety (IPCS) framework...
May 17, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28520233/nanojunction-polymer-photoelectrode-for-efficient-charge-transport-and-separation
#7
Qiushi Ruan, Wenjun Luo, Jijia Xie, Yiou Wang, Xu Liu, Zhiming Bai, Claire J Carmalt, Junwang Tang
A novel nanojunction archiecture of metal-free photoanode, composed of B-doped carbon nitride nanolayer and bulk carbon nitride has been fabricated by a one-step construction approach. This type of nanojunction overcomes a few intrinsic drawbacks of carbon nitride film, e.g. severe bulk charge recombination and slow charge transfer. For the optium sample, the top layer of the nanojunction has a depth of ca. 100 nm and the bottom layer is ca. 900 nm. The nanojunction photoanode results into a 10 fold higher photocurrent than bulk graphitic carbon nitride and an extremely high incident photon-to-current efficiency (IPCE) of ca...
May 18, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28515792/mesenchymal-stem-cell-therapy-in-type-2-diabetes-mellitus
#8
REVIEW
Li Zang, Haojie Hao, Jiejie Liu, Yijun Li, Weidong Han, Yiming Mu
Type 2 diabetes mellitus (T2DM), which is characterized by the combination of relative insulin deficiency and insulin resistance, cannot be reversed with existing therapeutic strategies. Transplantation of insulin-producing cells (IPCs) was once thought to be the most promising strategy for treating diabetes, but the pace from the laboratory to clinical application has been obstructed due to its drawbacks. Mesenchymal stem cells (MSCs) harbor differentiation potential, immunosuppressive properties, and anti-inflammatory effects, and they are considered an ideal candidate cell type for treatment of DM...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28511069/ischaemic-preconditioning-current-knowledge-and-potential-future-applications-after-30-years-of-experience
#9
REVIEW
Karolina Stokfisz, Anna Ledakowicz-Polak, Maciej Zagorski, Marzenna Zielinska
Ischaemic preconditioning (IPC) phenomenon has been known for thirty years. During that time several studies showed that IPC provided by brief ischaemic and reperfusion episodes prior to longer ischaemia can bestow a protective effect to both preconditioned and also remote organs. IPC affecting remote organs is called remote ischaemic preconditioning. Initially, most IPC studies were focused on enhancing myocardial resistance to subsequent ischaemia and reperfusion injury. However, preconditioning was found to be a universal phenomenon and was observed in various organs and tissues including the heart, liver, brain, retina, kidney, skeletal muscles and intestine...
May 13, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28500264/s1p1-mediated-anti-ras-cardioprotection-pivotal-role-of-mast-cell-aldh2
#10
Alice Marino, Takuya Sakamoto, Pablo A Robador, Kengo Tomita, Roberto Levi
In the ischemic-reperfused (I/R) heart, renin-containing mast cells (MC) release enzymatically active renin, activating a local renin-angiotensin system (RAS), causing excessive norepinephrine release and arrhythmic dysfunction. Activation of Gi-receptors on MC, and/or ischemic preconditioning (IPC), prevent renin release, thus providing anti-RAS cardioprotection. We questioned whether sphingosine-1-phosphate (S1P), a sphingolipid produced in the I/R heart, might afford anti-RAS cardioprotection by activating Gi-coupled S1P1 receptors (S1P1R) on MC...
May 12, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28489097/self-assembly-of-inverse-patchy-colloids-with-tunable-patch-coverage
#11
Manigandan Sabapathy, Remya Ann Mathews K, Ethayaraja Mani
We report a simple and scalable technique for the preparation of patchy particles with tunable patch coverage. These particles are categorized as inverse patchy colloidal particles (IPCs) as the patches repel each other while patch and non-patch surfaces attract. We demonstrate the effect of patch coverage, concentration of electrolyte and concentration of particles on the self-assembly of IPC particles. The study identifies various clustering zones such as (1) finite-sized clusters, (2) chain-like assemblies and (3) irregular amorphous aggregates...
May 24, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28486997/the-antifungal-aureobasidin-a-and-an-analogue-are-active-against-the-protozoan-parasite-toxoplasma-gondii-but-do-not-inhibit-sphingolipid-biosynthesis
#12
A Q I Alqaisi, A J Mbekeani, M Bassas Llorens, A P Elhammer, P W Denny
Toxoplasma gondii is an obligate intracellular protozoan parasite of the phylum Apicomplexa, and toxoplasmosis is an important disease of both humans and economically important animals. With a limited array of drugs available there is a need to identify new therapeutic compounds. Aureobasidin A (AbA) is an antifungal that targets the essential inositol phosphorylceramide (IPC, sphingolipid) synthase in pathogenic fungi. This natural cyclic depsipeptide also inhibits Toxoplasma proliforation, with the protozoan IPC synthase orthologue proposed as the target...
May 10, 2017: Parasitology
https://www.readbyqxmd.com/read/28479068/analysis-of-catecholamines-in-urine-by-unique-lc-ms-suitable-ion-pairing-chromatography
#13
Marianne L Bergmann, Seyed Sadjadi, Anne Schmedes
The catecholamines, epinephrine (E) and norepinephrine (NE) are small polar, hydrophilic molecules, posing significant challenges to liquid chromatography - tandem mass spectrometry (LC-MS/MS) method development. Specifically, these compounds show little retention on conventional reversed-phase liquid chromatography columns. This work presents development and validation of an LC-MS/MS method for determining catecholamines in urine, based on a new approach to ion-pairing chromatography (IPC), in which the ion-pairing reagent (IPR), 1-Heptane Sulfonic Acid (HSA), is added to the extracted samples instead of the mobile phases...
July 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28475182/lily-lipidome-isotope-labeling-of-yeast-in-vivo-synthesis-of-13-c-labeled-reference-lipids-for-quantification-by-mass-spectrometry
#14
Evelyn Rampler, Cristina Coman, Gerrit Hermann, Albert Sickmann, Robert Ahrends, Gunda Koellensperger
Quantification is an essential task in comprehensive lipidomics studies challenged by the high number of lipids, their chemical diversity and their dynamic range of the lipidome. In this work, we introduce lipidome isotope labeling of yeast (LILY) in order to produce (non-radioactive) isotopically labeled eukaryotic lipid standards in yeast for normalization and quantification in mass spectrometric assays. More specifically, LILY is a fast and efficient in vivo labeling strategy in Pichia pastoris for the production of (13)C labeled lipid library further paving the way to comprehensive compound-specific internal standardization in quantitative mass spectrometry based assays...
May 5, 2017: Analyst
https://www.readbyqxmd.com/read/28469321/cytodiagnosis-of-papillary-carcinoma-of-the-male-breast-report-of-a-case-with-histological-correlation
#15
Ranjan Agrawal, Nitesh Mohan, Mithila Bisht, Parbodh Kumar
Papillary lesions of the breast pose great diagnostic challenges on fine needle aspiration cytology (FNAC) due to overlapping features between benign and malignant entities. Preoperative cytodiagnosis is difficult. We present a case of a 52-year-old male who presented with a progressively increasing firm swelling in the left breast for 3 years. The nipple was eroded with ulceration and bleeding. Ultrasonography (USG) revealed a mass measuring 2.9 cm × 1.5 cm in the left breast. FNAC smears were hypercellular with ductal cells arranged in papillae and glandular clusters...
April 2017: Journal of Cytology
https://www.readbyqxmd.com/read/28464427/pulmonary-hypertension-due-to-left-heart-disease-analysis-of-survival-according-to-the-haemodynamic-classification-of-the-2015-esc-ers-guidelines-and-insights-for-future-changes
#16
Massimiliano Palazzini, Fabio Dardi, Alessandra Manes, Maria L Bacchi Reggiani, Enrico Gotti, Andrea Rinaldi, Alessandra Albini, Enrico Monti, Nazzareno Galiè
AIMS: Pulmonary hypertension (PH) is a relevant complication of left heart disease (LHD). The 2015 ESC/ERS PH guidelines report two different haemodynamic subsets of PH due to LHD (PH-LHD) based on levels of pulmonary vascular resistance (PVR) and diastolic pressure gradient (DPG): isolated post-capillary PH (Ipc-PH) and combined post- and pre-capillary PH (Cpc-PH). The objective of this study is to evaluate the prognostic value of Ipc-PH and Cpc-PH. METHODS AND RESULTS: Data from 276 consecutive incident patients with PH-LHD were included...
May 2, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28463661/group-b-streptococcal-bacteriuria-during-pregnancy-as-a-risk-factor-for-maternal-intrapartum-colonization-a-prospective-cohort-study
#17
Mar Olga Pérez-Moreno, Ester Picó-Plana, Jesús Grande-Armas, Mª José Centelles-Serrano, Mercé Arasa-Subero, Núria Colomé- Ochoa, Members Of The Study Group Gessagte Led By Mo Pérez-Moreno
PURPOSE: Current evidence is inconclusive regarding the intrapartum administration of chemoprophylaxis, merely based on the presence of group B streptococcal (GBS) bacteriuria of any colony count, in the prevention of early-onset neonatal GBS infection. The aim of this study was to assess whether GBS bacteriuria is a risk factor for intrapartum colonization (IPC) regardless of urinary concentration or the results of late third-trimester rectovaginal screening cultures (RVSCs). METHODOLOGY: Six hundred and eight pregnant women, with urine specimens cultured between May 2011 and May 2013, were enrolled in this prospective cohort study...
April 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28448534/intense-light-elicited-upregulation-of-mir-21-facilitates-glycolysis-and-cardioprotection-through-per2-dependent-mechanisms
#18
Colleen Marie Bartman, Yoshimasa Oyama, Kelley Brodsky, Ludmila Khailova, Lori Walker, Michael Koeppen, Tobias Eckle
A wide search for ischemic preconditioning (IPC) mechanisms of cardioprotection identified the light elicited circadian rhythm protein Period 2 (Per2) to be cardioprotective. Studies on cardiac metabolism found a key role for light elicited Per2 in mediating metabolic dependence on carbohydrate metabolism. To profile Per2 mediated pathways following IPC of the mouse heart, we performed a genome array and identified 352 abundantly expressed and well-characterized Per2 dependent micro RNAs. One prominent result of our in silico analysis for cardiac Per2 dependent micro RNAs revealed a selective role for miR-21 in the regulation of hypoxia and metabolic pathways...
2017: PloS One
https://www.readbyqxmd.com/read/28431163/an-evaluation-of-the-human-relevance-of-the-lung-tumors-observed-in-female-mice-treated-with-permethrin-based-on-mode-of-action
#19
Tomoya Yamada, Miwa Kondo, Kaori Miyata, Keiko Ogata, Masahiko Kushida, Kayo Sumida, Satoshi Kawamura, Thomas G Osimitz, Brian G Lake, Samuel M Cohen
Permethrin increased the incidence of bronchiolo-alveolar adenomas in female mice but not male mice or female or male rats. Studies were conducted to determine whether permethrin has mitogenic activity in Club cells in mouse lung as the basis for the mode of action (MOA) for the lung adenoma induction. Several short term experiments focusing on time-course, dose-response, reversibility, sex difference, strain difference, and species difference were evaluated for Club cell proliferation and morphology. The findings demonstrated that permethrin slightly and continuously enhanced Club cell proliferation at tumor-associated dose levels in female mice, but did not increase proliferation in male mice or in female rats...
April 18, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28427003/ce-method-for-the-in-process-control-of-the-synthesis-of-active-substances-conjugated-with-gold-nanoparticles
#20
Wioleta Maruszak, Elżbieta U Stolarczyk, Krzysztof Stolarczyk
A fast capillary electrophoresis method was developed and validated for the in-process control (IPC) of the synthesis of active substances (APIs) with gold nanoparticles (AuNPs). The capillary electrophoresis method was key to ensure that the reaction step conducted in order to obtain AuNP and API conjugates will produce the expected product without the presence of free APIs, which is a critical parameter determining the quality of the synthetic material. Capillary electrophoresis was performed using uncoated fused-silica capillaries with the effective length of 40cm, 50μm i...
April 10, 2017: Journal of Pharmaceutical and Biomedical Analysis
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