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https://www.readbyqxmd.com/read/28974793/extraction-and-identification-of-bioactive-components-in-sida-cordata-burm-f-using-gas-chromatography-mass-spectrometry
#1
Mani Ganesh, Murugan Mohankumar
Sida cordata (Burm.f.) is a pineal tropical plant in the family Malvaceae that is found throughout India and used to treat various diseases and ailments in many complementary and alternative medicine systems. This study identified the bioactive components present in whole-plant ethanol extracts of S. cordata using gas chromatography-mass spectrometry (GC-MS). Based on their retention times (RT) and mass-to-charge ratios (m/z), 29 bioactive compounds were identified: nonanoic acid, vitamin D3, 3-trifluroacetoxypentadecane, α-d-glucopyranoside, O-α-d-glucopyranosyl-(1...
September 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28972732/bilayer-plots-for-accurately-determining-the-chirality-of-single-walled-carbon-nanotubes-under-complex-environments
#2
Juan Yang, Daqi Zhang, Yuecong Hu, Chenmaya Xia, Sida Sun, Yan Li
The chirality (n,m) determines all structures and properties of a single-walled carbon nanotube (SWNT), therefore, accurate and convenient (n,m) assignments are vital in nanotube-related science and technology. Previously, a so-called Kataura plot that protracts the excitonic transition energies (Eii's) of SWNTs with various (n,m) with respect to the tube diameter (dt), has been widely utilized by researchers in the nanotube community for all (n,m)-related studies. However, the fact that both Eii and the calculated dt are subject to interactions with the environments makes it inconvenient to accurately determine the (n,m) under complex environments...
October 3, 2017: ACS Nano
https://www.readbyqxmd.com/read/28967199/levels-and-determinants-of-breast-and-cervical-cancer-screening-uptake-in-hiv-infected-women-compared-with-the-general-population-in-france
#3
L Tron, F Lert, B Spire, R Dray-Spira
OBJECTIVES: Cancer is a growing concern for HIV-infected people, and screening plays a major role in alleviating the burden it causes. We sought to investigate the levels and determinants of breast cancer screening (BCS) and cervical cancer screening (CCS) in HIV-infected women as compared with the general population. METHODS: The Agence Nationale de Recherche sur le Sida et les Hépatites Virales (ANRS)-Vespa2 study was conducted in 2011 in a national representative sample of 3022 HIV-infected hospital out-patients in France...
March 2017: HIV Medicine
https://www.readbyqxmd.com/read/28962198/analysis-of-risk-factors-for-post-operative-complications-and-prognostic-predictors-of-disease-recurrence-following-definitive-treatment-of-patients-with-esophageal-cancer-from-two-medical-centers-in-northwest-china
#4
Jichang Wang, Boxiang Zhang, Jinying Meng, Guodong Xiao, Xiang Li, Gang Li, Sida Qin, Ning Du, Jia Zhang, Jing Zhang, Chongwen Xu, Shou-Ching Tang, Rui Liang, Hong Ren, Xin Sun
Evaluating the clinicopathological features of patients receiving definitive treatment for esophageal cancer may facilitate the identification of patterns and factors associated with post-operative complications, and enable the development of a surveillance strategy for surviving patients at a higher risk of disease recurrence. In the present study, clinical data from 579 patients with esophageal cancer that underwent radical resection of esophagus were collected. These patients were admitted to two medical centers in Northwest China, and information regarding the presence or absence of basic chronic diseases and post-operative results were retrospectively analyzed...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28919477/influence-of-microwave-heating-on-biogas-production-from-sida-hermaphrodita-silage
#5
Marcin Zieliński, Marcin Dębowski, Paulina Rusanowska
This study compared the effects on biogas production of suspended sludge versus a combination of suspended sludge and immobilized biomass, and microwave versus convection heating. Biogas production was the highest in the hybrid bioreactor heated by microwaves (385L/kg VS) and also the most stable, as shown by the FOS/TAC ratio and pH. Regardless of the type of heating, biogas production was 8% higher with immobilized biomass than without. Although the lag phase of biogas production was shorter with microwave heating than without, the log phase was longer, and biogas production in the microwave heated bioreactors took about twice as long (ca...
September 1, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28903429/lenalidomide-restores-the-osteogenic-differentiation-of-bone-marrow-mesenchymal-stem-cells-from-multiple-myeloma-patients-via-deactivating-notch-signaling-pathway
#6
Juan Guo, Chengming Fei, Youshan Zhao, Sida Zhao, Qingqing Zheng, Jiying Su, Dong Wu, Xiao Li, Chunkang Chang
Multiple myeloma (MM) always presents osteolytic bone lesions, resulting from the abnormal osteoblastic and osteoclastic function in patients. MM patients exhibit the impairment of osteogenic differentiation of BMMSCs (bone marrow mesenchymal stem cells) and osteoblast deficiency. Effects of the drug, lenalidomide on the osteoblastic functions and the involved mechanisms remain unexplored. In the present study, it is observed that the osteogenic differentiation of BMMSCs from MM patients (MM-MSCs) is impaired and activation of Notch signaling pathway in MM-MSCs is abnormal...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28901820/response-to-students-to-surgeons-increasing-matriculation-in-surgical-specialties
#7
Harry Spiers, Hugh N Furness, Edward Neale, Sida Mao, Thomas L Lewis
No abstract text is available yet for this article.
September 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28893583/facile-formation-of-co-amorphous-atenolol-and-hydrochlorothiazide-mixtures-via-cryogenic-milling-enhanced-physical-stability-dissolution-and-pharmacokinetic-profile
#8
Sakib M Moinuddin, Sida Ruan, Yuting Huang, Qin Gao, Qin Shi, Baochang Cai, Ting Cai
The development of poorly water-soluble drugs faces the risk of low bioavailability and therapeutic efficacy. The co-amorphous drug delivery system has recently gained considerable interest because it offers an alternative approach to modify properties of poorly water-soluble drugs. Herein, we developed a co-amorphous system of atenolol (ATE) and poorly water-soluble hydrochlorothiazide (HCT) by means of cryogenic milling. The co-administration of ATE and HCT has been reported to show therapeutic advantages for patients with uncomplicated hypertension...
September 8, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28886092/prediction-of-long-term-outcomes-of-hiv-infected-patients-developing-non-aids-events-using-a-multistate-approach
#9
Mar Masiá, Sergio Padilla, Santiago Moreno, Xavier Barber, Jose A Iribarren, Jorge Del Romero, Juan L Gómez-Sirvent, María Rivero, Francesc Vidal, Antonio A Campins, Félix Gutiérrez
OBJETIVES: Outcomes of people living with HIV (PLWH) developing non-AIDS events (NAEs) remain poorly defined. We aimed to classify NAEs according to severity, and to describe clinical outcomes and prognostic factors after NAE occurrence using data from CoRIS, a large Spanish HIV cohort from 2004 to 2013. DESIGN: Prospective multicenter cohort study. METHODS: Using a multistate approach we estimated 3 transition probabilities: from alive and NAE-free to alive and NAE-experienced ("NAE development"); from alive and NAE-experienced to death ("Death after NAE"); and from alive and NAE-free to death ("Death without NAE")...
2017: PloS One
https://www.readbyqxmd.com/read/28879788/development-of-an-epitope-based-hiv-1-vaccine-strategy-from-hiv-1-lipopeptide-to-dendritic-based-vaccines
#10
Mathieu Surenaud, Christine Lacabaratz, Gérard Zurawski, Yves Lévy, Jean-Daniel Lelièvre
Development of a safe, effective and globally affordable Human Immunodeficiency Virus strain 1 (HIV-1) vaccine offers the best hope for future control of the HIV-1 pandemic. However, with the exception of the recent RV144 trial, which elicited a modest level of protection against infection, no vaccine candidate has shown efficacy in preventing HIV-1 infection or in controlling virus replication in humans. There is also a great need for a successful immunotherapeutic vaccine since combination antiretroviral therapy (cART) does not eliminate the reservoir of HIV-infected cells...
September 7, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28871404/assessment-of-bioavailable-b-vitamin-content-in-food-using-in-vitro-digestibility-assay-and-lc-ms-sida
#11
Toomas Paalme, Allan Vilbaste, Kaspar Kevvai, Ildar Nisamedtinov, Kristel Hälvin-Tanilas
Standardized analytical methods, where each B vitamin is extracted from a given sample individually using separate procedures, typically ensure that the extraction conditions provide the maximum recovery of each vitamin. However, in the human gastrointestinal tract (GIT), the extraction conditions are the same for all vitamins. Here, we present an analytically feasible extraction protocol that simulates conditions in the GIT and provides a measure of the content of bioavailable vitamins using LC-MS stable isotope dilution assay...
September 4, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28863242/argon-plasma-reinforced-superamphiphobic-fabrics
#12
Shuai Liu, Hua Zhou, Hongxia Wang, Weidong Yang, Hao Shao, Sida Fu, Yan Zhao, Deqi Liu, Zhihua Feng, Tong Lin
A novel method for preparing durable superamphiphobic fabrics is reported, which involves preapplying a solution consisting of perfluoroalkyl acrylate, epoxide-containing silane, and silica nanoparticles onto fabric and subsequent argon-plasma treatment. The coated fabrics show superphobic to both water and oil fluids (surface tension >21.5 mN m(-1) ). The coating is durable to withstand repeated laundries and multicycles of abrasion without apparently altering the superamphiphobicity. The coating is also very stable in boiling water, strong acid, and base, but has little effect on the fabric handle and air permeability...
September 1, 2017: Small
https://www.readbyqxmd.com/read/28856560/ensemble-classifiers-for-predicting-hiv-1-resistance-from-three-rule-based-genotypic-resistance-interpretation-systems
#13
Letícia M Raposo, Flavio F Nobre
Resistance to antiretrovirals (ARVs) is a major problem faced by HIV-infected individuals. Different rule-based algorithms were developed to infer HIV-1 susceptibility to antiretrovirals from genotypic data. However, there is discordance between them, resulting in difficulties for clinical decisions about which treatment to use. Here, we developed ensemble classifiers integrating three interpretation algorithms: Agence Nationale de Recherche sur le SIDA (ANRS), Rega, and the genotypic resistance interpretation system from Stanford HIV Drug Resistance Database (HIVdb)...
August 30, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28855827/expression-analysis-and-biochemical-characterization-of-beans-plants-biofortificated-with-zinc
#14
Sandra Pérez Álvarez, Juan Pedro Sida-Arrerola, Esteban Sánchez Chávez, Eduardo Fidel Héctor Ardisana
The present work was carried out in greenhouse conditions at the Centro de Investigación en Alimentación y Desarrollo AC in Delicias, Chihuahua, México. Four different concentrations (0, 25, 50 and 100 μM L(-1)) of Zn chelate and sulfate were used to study the antioxidant system of Phaseolus vulgaris L. Three genes related with antioxidant activity [superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT)] were selected for expression study. Results showed that when Zn chelate at 50 and 100 μM L(-1) were applied SOD was repressed and GSH-Px expression was low at 0, 25 and 100 μM L(-1) while with sulfate form SOD expression was low and GSH-Px expression was strong in all treatment...
September 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28853861/renal-clearable-ultrasmall-coordination-polymer-nanodots-for-chelator-free-64-cu-labeling-and-imaging-guided-enhanced-radiotherapy-of-cancer
#15
Sida Shen, Dawei Jiang, Liang Cheng, Yu Chao, Kaiqi Nie, Ziliang Dong, Christopher J Kutyreff, Jonathan W Engle, Peng Huang, Weibo Cai, Zhuang Liu
Developing tumor-homing nanoparticles with integrated diagnostic and therapeutic functions, and meanwhile could be rapidly excreted from the body, would be of great interest to realize imaging-guided precision treatment of cancer. In this study, an ultrasmall coordination polymer nanodot (CPN) based on the coordination between tungsten ions (W(VI)) and gallic acid (W-GA) was developed via a simple method. After polyethylene glycol (PEG) modification, PEGylated W-GA (W-GA-PEG) CPNs with an ultrasmall hydrodynamic diameter of 5 nm were rather stable in various physiological solutions...
September 26, 2017: ACS Nano
https://www.readbyqxmd.com/read/28847077/organocat-pretreatment-of-perennial-plants-synergies-between-a-biogenic-fractionation-and-valuable-feedstocks
#16
Tatjana Damm, Philipp Michael Grande, Nicolai David Jablonowski, Björn Thiele, Ulrich Disko, Ulrich Mann, Ulrich Schurr, Walter Leitner, Björn Usadel, Pablo Domínguez de María, Holger Klose
A successful biorefinery needs to align suitable pretreatment with sustainable production of biomasses. Herein, four perennial plants, (Sida, Silphium, Miscanthus and Szarvasi) regarded as promising feedstocks for biorefineries were subjected to the OrganoCat pretreatment. The technology was successfully applied to the different perennial plants revealing that pretreatment of grasses was more efficient than of non-grasses. Thorough analyses of the lignocellulose - before and after fractionation - enabled a detailed description of the fate of cellulosic, non-cellulosic polysaccharides and lignin during the pretreatment...
November 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28807189/effect-of-non-monetary-incentives-on-uptake-of-couples-counselling-and-testing-among-clients-attending-mobile-hiv-services-in-rural-zimbabwe-a-cluster-randomised-trial
#17
Euphemia L Sibanda, Mary Tumushime, Juliet Mufuka, Sue Napierala Mavedzenge, Stephano Gudukeya, Sergio Bautista-Arredondo, Karin Hatzold, Harsha Thirumurthy, Sandra I McCoy, Nancy Padian, Andrew Copas, Frances M Cowan
BACKGROUND: Couples' HIV testing and counselling (CHTC) is associated with greater engagement with HIV prevention and care than individual testing and is cost-effective, but uptake remains suboptimal. Initiating discussion of CHTC might result in distrust between partners. Offering incentives for CHTC could change the focus of the pre-test discussion. We aimed to determine the impact of incentives for CHTC on uptake of couples testing and HIV case diagnosis in rural Zimbabwe. METHODS: In this cluster-randomised trial, 68 rural communities (the clusters) in four districts receiving mobile HIV testing services were randomly assigned (1:1) to incentives for CHTC or not...
September 2017: Lancet Global Health
https://www.readbyqxmd.com/read/28805559/effect-of-stress-on-the-expression-of-galanin-receptors-in-rat-heart
#18
J Šípková, P Šída, N Kaspříková, I Kramáriková, S Hynie, V Klenerová
Neuropeptide galanin, galanin-like peptide and galanin receptors 1, 2 and 3 are a crucial part of the so-called galaninergic system. Our previous studies have shown the possible role of this system in mood modulation, especially regarding stress. So far, the galanin receptors have been found in different tissues including brain and heart. Our study deals with changes in expression of galanin receptor subtypes in the heart of Wistar rats exposed to three different types of stress. Galanin receptor subtypes were determined in fluorescently labelled samples using specific primary antibodies, and all sections were analysed in an immunofluorescent microscope and microphotographs...
2017: Folia Biologica (Praha)
https://www.readbyqxmd.com/read/28747274/efficacy-safety-and-effect-on-sexual-behaviour-of-on-demand-pre-exposure-prophylaxis-for-hiv-in-men-who-have-sex-with-men-an-observational-cohort-study
#19
Jean-Michel Molina, Isabelle Charreau, Bruno Spire, Laurent Cotte, Julie Chas, Catherine Capitant, Cecile Tremblay, Daniela Rojas-Castro, Eric Cua, Armelle Pasquet, Camille Bernaud, Claire Pintado, Constance Delaugerre, Luis Sagaon-Teyssier, Soizic Le Mestre, Christian Chidiac, Gilles Pialoux, Diane Ponscarme, Julien Fonsart, David Thompson, Mark A Wainberg, Veronique Doré, Laurence Meyer
BACKGROUND: Data for on-demand pre-exposure prophylaxis (PrEP) are scarce. We implemented a cohort study to assess its efficacy, safety, and effect on sexual behaviour. METHODS: We invited men and transgender women who have sex with men, previously enrolled in the randomised placebo-controlled ANRS IPERGAY trial at seven sites (six in France and one in Canada), to participate in an open-label extension with on-demand tenofovir disoproxil fumarate (300 mg) and emtricitabine (200 mg) to be taken before and after sexual intercourse...
September 2017: Lancet HIV
https://www.readbyqxmd.com/read/28732358/lenalidomide-restores-the-osteogenic-differentiation-of-bone-marrow-mesenchymal-stem-cells-from-multiple-myeloma-patients-via-deactivating-notch-signaling-pathway
#20
Juan Guo, Chengming Fei, Youshan Zhao, Sida Zhao, Qingqing Zheng, Jiying Su, Dong Wu, Xiao Li, Chunkang Chang
Multiple myeloma (MM) always presents osteolytic bone lesions, resulting from the abnormal osteoblastic and osteoclastic function in patients. MM patients exhibit the impairment of osteogenic differentiation of BMMSCs (bone marrow mesenchymal stem cells) and osteoblast deficiency. Effects of the drug, lenalidomide on the osteoblastic functions and the involved mechanisms remain unexplored. In the present study, it is observed that the osteogenic differentiation of BMMSCs from MM patients (MM-MSCs) is impaired and activation of Notch signaling pathway in MM-MSCs is abnormal...
July 15, 2017: Oncotarget
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