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https://www.readbyqxmd.com/read/28532144/physically-targeted-intravenous-polyurethane-nanoparticles-for-controlled-release-of-atorvastatin-calcium
#1
Behnaz Sadat Eftekhari, Akbar Karkhaneh, Ali Alizadeh
Background: Intravenous drug delivery is an advantageous choice for rapid administration, immediate drug effect, and avoidance of first-pass metabolism in oral drug delivery. In this study, the synthesis, formulation, and characterization of atorvastatin-loaded polyurethane (PU) nanoparticles were investigated for intravenous route of administration. Methods: First, PU was synthesized and characterized. Second, nanoparticles were prepared in four different ratios of drug to polymer through two different techniques including emulsion-diffusion and single-emulsion...
May 23, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28532009/exploring-recent-developments-to-improve-antioxidant-anti-inflammatory-and-antimicrobial-efficacy-of-curcumin-a-review-of-new-trends-and-future-perspectives
#2
REVIEW
Zahid Hussain, Hnin Ei Thu, Muhammad Wahab Amjad, Fahad Hussain, Tarek A Ahmed, Shahzeb Khan
Curcumin derivatives have been well-documented due to their natural antioxidant, antimicrobial and anti-inflammatory activities. Curcuminoids have also gained widespread recognition due to their wide range of other activities which include anti-infective, anti-mutagenic, anticancer, anti-coagulant, antiarthrititc, and wound healing potential. Despite of having a wide range of activities, the inherent physicochemical characteristics (poor water solubility, low bioavailability, chemical instability, photodegradation, rapid metabolism and short half-life) of curcumin derivatives limit their pharmaceutical significance...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531983/development-of-haptic-based-piezoresistive-artificial-fingertip-toward-efficient-tactile-sensing-systems-for-humanoids
#3
Amin TermehYousefi, Saman Azhari, Amin Khajeh, Mohd Nizar Hamidon, Hirofumi Tanaka
Haptic sensors are essential devices that facilitate human-like sensing systems such as implantable medical devices and humanoid robots. The availability of conducting thin films with haptic properties could lead to the development of tactile sensing systems that stretch reversibly, sense pressure (not just touch), and integrate with collapsible. In this study, a nanocomposite based hemispherical artificial fingertip fabricated to enhance the tactile sensing systems of humanoid robots. To validate the hypothesis, proposed method was used in the robot-like finger system to classify the ripe and unripe tomato by recording the metabolic growth of the tomato as a function of resistivity change during a controlled indention force...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531831/workflow-methodology-for-rat-brain-metabolome-exploration-using-nmr-lc-ms-and-gc-ms-analytical-platforms
#4
Binta Diémé, Antoine Lefèvre, Lydie Nadal-Desbarats, Laurent Galineau, Blandine Madji Hounoum, Frédéric Montigny, Hélène Blasco, Christian R Andres, Patrick Emond, Sylvie Mavel
We developed a multi-platform approach for the metabolome exploration of rat brain tissue, using liquid chromatography coupled with mass spectrometry (LC-MS), nuclear magnetic resonance spectroscopy (NMR) and gas-chromatography coupled with mass spectrometry (GC-MS). The critical steps for metabolite exploration of cerebral tissues are tissue lysis and metabolites extraction. We first evaluated the impact of freeze-drying compared to wet tissue metabolites extraction using NMR and LC-MS with a reversed phase liquid chromatography...
May 13, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28531820/adverse-effects-and-treatment-satisfaction-among-online-users-of-four-antidepressants
#5
Shannon Hughes, Jeffrey Lacasse, Reid Rogers Fuller, Jennifer Spaulding-Givens
Adverse effects (AEs) are an important factor in antidepressant treatment decision-making, though common AE profiles from clinical trial research highlight physical AEs to the neglect of emotional and behavioral AEs. First-hand accounts of antidepressant users on the Internet can supplement AE profiles with information gained from real-world treatment experiences. We examined online user reviews of two older (escitalopram; duloxetine) and two newer (vilazodone; vortioxetine) antidepressants for differences in their AE profiles and determined which categories of AEs were associated with users' satisfaction...
May 16, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28531807/high-post-natal-mortality-associated-with-defects-in-lung-maturation-and-reduced-adiposity-in-mice-with-gestational-exposure-to-high-fat-and-n-acetylcysteine
#6
Lyda Williams, Maureen J Charron, Rani S Sellers
Studies have demonstrated that maternal consumption of a high fat diet (HFD) increases offspring susceptibility to metabolic disease. This study was initiated to identify the mechanistic contribution of oxidative stress on this phenomenon. Two weeks prior to mating, dams were fed either HFD or Control diet with or without supplementation with the anti-oxidant N-acetylcysteine (NAC). Pups born to HFD dams had reduced crown rump length (CRL) at birth and higher neonatal mortality compared to pups from Control dams...
May 14, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28531801/ace-2-ang1-7-mas-cascade-mediates-ace-inhibitor-captopril-protective-effects-in-estrogen-deficient-osteoporotic-rats
#7
Hatem M Abuohashish, Mohammed M Ahmed, Dina Sabry, Mahmoud M Khattab, Salim S Al-Rejaie
The local role of the renin angiotensin system (RAS) was documented recently beside its conventional systemic functions. Studies showed that the effector angiotensin II (AngII) alters bone health, while inhibition of the angiotensin converting enzyme (ACE-1) preserved these effects. The newly identified Ang1-7 exerts numerous beneficial effects opposing the AngII. Thus, the current study examines the role of Ang1-7 in mediating the osteo-preservative effects of ACEI (captopril) through the G-protein coupled Mas receptor using an ovariectomized (OVX) rat model of osteoporosis...
May 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28531784/gut-microbiota-mediated-benefits-of-barley-kernel-products-on-metabolism-gut-hormones-and-inflammatory-markers-as-affected-by-co-ingestion-of-commercially-available-probiotics-a-randomized-controlled-study-in-healthy-subjects
#8
Anne Nilsson, Elin Johansson-Boll, Jonna Sandberg, Inger Björck
BACKGROUND AND AIMS: Barley kernel based products have been shown to induce benefits on blood glucose regulation, cardio-metabolic risk markers and appetite regulating hormones in a time perspective of 11-16 h after intake. The mechanisms have been assigned to gut fermentation of indigestible carbohydrates. The purpose of the present study was to evaluate if the modulatory effects of barley on markers of metabolic- and appetite regulation are affected by a dietary background including a mixture of commercially available probiotics...
October 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531779/overweight-postmenopausal-women-with-different-plasma-estradiol-concentrations-present-with-a-similar-pattern-of-energy-expenditure-and-substrate-oxidation-rate-before-and-after-a-fatty-meal-challenge
#9
Roberta de Souza Santos, Andressa Feijó da Silva Santos, Deborah J Clegg, Odilon Iannetta, Julio Sérgio Marchini, Vivian Marques Miguel Suen
Menopause-related withdrawal of ovarian estrogens is associated with reduced energy metabolism and overall impairment of substrate oxidation. Estradiol's withdrawal after menopause is associated with a reduction in energy metabolism and impaired substrate oxidation, which contributes to weight gain and visceral fat accumulation. Here we aimed to investigate the association between plasma estradiol concentrations and energy expenditure (EE)/substrate oxidation in a group of overweight postmenopausal women before and after a fatty meal challenge...
October 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531773/impact-of-metabolic-syndrome-on-resting-energy-expenditure-in-patients-with-chronic-kidney-disease
#10
Carolina Q D Rodrigues, Jacqueline A P Santos, Beata M R Quinto, Mauro S M Marrocos, Andrei A Teixeira, Cássio J O Rodrigues, Marcelo C Batista
BACKGROUND & AIMS: Resting energy expenditure (REE) changes in patients with chronic kidney disease (CKD) may contribute to mortality increase. The obesity and inflammation is associated with high REE and when not compensated by adequate intake, may determine an unfavorable clinical outcome in this population. We aimed to evaluate the influence of metabolic syndrome (MetS) on REE in CKD patients. METHODS: One hundred eighty-three patients were stratified according to glomerular filtration rate (GFR) and divided in groups: without CKD (GFR > 60 ml/min/1...
October 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531662/microencapsulation-of-gulosibacter-molinativorax-on4-t-cells-by-a-spray-drying-process-using-different-biopolymers
#11
Berta N Estevinho, A Rita Lopes, Vera Sousa, Fernando Rocha, Olga C Nunes
Molinate is a thiocarbamate herbicide used in rice crop protection. As other pesticides, molinate is a recognized environmental pollutant and bio-accumulated by some wildlife forms. Gulosibacter molinativorax ON4(T) is able to hydrolyse molinate into metabolites which are further degraded by other un-related bacteria. Hence, it can be used in molinate bioremediation processes. The aim of this work was to investigate the possibility of producing G. molinativorax ON4(T) microparticles, using different non-toxic biopolymers (arabic gum, modified chitosan, calcium alginate and sodium alginate) as encapsulating agents by a spray-drying process...
May 11, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531623/metabolic-deficiencies-after-a-restrictive-bariatric-operation
#12
Nikolaos Kochylas, Michalis Tsimaras, Vasiliki Ziozia, Basilios Tsagkalidis, Dimitrios Lapatsanis
No abstract text is available yet for this article.
June 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531615/changes-in-body-composition-and-basic-metabolic-rate-bmr-following-bariatric-surgery
#13
Magda Sotirxou, Athanasios Migdanis, Ioannis Migdanis, Maria Kanaki, Giorgos Koukoulis, Andreas Alexandrou, Theodoros Diamantis
No abstract text is available yet for this article.
June 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531555/microbial-detoxification-of-carvedilol-a-%C3%AE-adrenergic-antagonist-by-the-filamentous-fungus-cunninghamella-echinulata
#14
Katarzyna Zawadzka, Przemysław Bernat, Aleksandra Felczak, Katarzyna Lisowska
Beta adrenergic antagonists like carvedilol are typical environmental pollutants detected in wastewater and surface water. Human metabolism of carvedilol is well investigated, while its environmental fates are still unknown. In recent years, there have been appearing reports on high toxicity of β-blockers toward aquatic organisms. In this paper the ability of the filamentous fungus C. echinulata to eliminate the β-blocker has been described for the first time. An 83% loss of carvedilol was observed after 120 h incubation of the tested fungus with the compound, where hydroxylated carvedilol metabolites were identified as the major biotransformation products...
May 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28531411/nutritional-problems-of-the-elderly-the-impact-on-metabolic-status-and-function
#15
Gregor Veninšek
No abstract text is available yet for this article.
August 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531393/the-rs10401670-variant-in-resistin-gene-improved-insulin-resistance-response-and-metabolic-parameters-secondaries-to-weight-loss-after-a-hypocaloric-diet
#16
Daniel Antonio de Luis, Rocío Aller, Olatz Izaola, David Primo, R Bachiller
BACKGROUND: The SNP 3'UTR C/T (rs10401670), it is a polymorphism that has been associated with diabetes mellitus and it has been scarcely studied before. As far as we know, no studies on interaction among diet intervention, rs10401670 variant of RETN and metabolic response has been realized. OBJECTIVE: Our aim was to analyze the effects of the rs10401670 RETN gene polymorphism on insulin resistance response and metabolic changes secondary to weight loss after 3 months of a hypocaloric diet in adults obese patients without diabetes mellitus...
August 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531376/immune-cell-signaling-in-autoimmune-diseases
#17
REVIEW
George C Tsokos, Noel R Rose
On September 20, 2016 the American Autoimmune Related Disease Association convened a selected group of 16 experts in Washington DC to discuss current issues and future directions of research in autoimmune diseases from the cell signaling perspective. The major topics considered included new findings on the follicular T cell cells in mice, their metabolic patterns and their control by the newly discovered T follicular regulatory cells. Current work on the metabolic pathways deemed important for the function of T cells was presented...
May 19, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28531339/limtox-a-web-tool-for-applied-text-mining-of-adverse-event-and-toxicity-associations-of-compounds-drugs-and-genes
#18
Andres Cañada, Salvador Capella-Gutierrez, Obdulia Rabal, Julen Oyarzabal, Alfonso Valencia, Martin Krallinger
A considerable effort has been devoted to retrieve systematically information for genes and proteins as well as relationships between them. Despite the importance of chemical compounds and drugs as a central bio-entity in pharmacological and biological research, only a limited number of freely available chemical text-mining/search engine technologies are currently accessible. Here we present LimTox (Literature Mining for Toxicology), a web-based online biomedical search tool with special focus on adverse hepatobiliary reactions...
May 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28531309/effect-of-antiretroviral-therapy-on-bone-and-renal-health-in-young-adults-infected-with-hiv-in-early-life
#19
Aylin B Unsal, Aviva S Mattingly, Sara E Jones, Julia B Purdy, James C Reynolds, Jeffrey B Kopp, Rohan Hazra, Colleen M Hadigan
Context: HIV antiretroviral (ARV) therapy is associated with renal and bone toxicity, but little is known about the potential cumulative effects in adults exposed to ARVs from birth. Objective: To prospectively evaluate renal and bone health in young adults with lifelong HIV and extensive ARV exposure. Design: Cross-sectional comparison of bone mineral density (BMD by dual-energy X-ray absorptiometry), bone turnover and renal function in young adults infected with HIV in early life (n=65) to matched healthy controls (n=23) and longitudinal evaluation (mean follow-up 4...
May 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28531304/replication-studies-of-carboxymethylated-dna-lesions-in-human-cells
#20
Jun Wu, Pengcheng Wang, Lin Li, Nicole L Williams, Debin Ji, Walter J Zahurancik, Changjun You, Jianshuang Wang, Zucai Suo, Yinsheng Wang
Metabolic activation of some N-nitroso compounds (NOCs), an important class of DNA damaging agents, can induce the carboxymethylation of nucleobases in DNA. Very little was previously known about how the carboxymethylated DNA lesions perturb DNA replication in human cells. Here, we investigated the effects of five carboxymethylated DNA lesions, i.e. O6-CMdG, N6-CMdA, N4-CMdC, N3-CMdT and O4-CMdT on the efficiency and fidelity of DNA replication in HEK293T human embryonic kidney cells. We found that, while neither N6-CMdA nor N4-CMdC blocked DNA replication or induced mutations, N3-CMdT, O4-CMdT and O6-CMdG moderately blocked DNA replication and induced substantial frequencies of T→A (81%), T→C (68%) and G→A (6...
May 22, 2017: Nucleic Acids Research
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