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https://www.readbyqxmd.com/read/28735524/characterization-of-cytoskeleton-features-and-maturation-status-of-cultured-human-ipsc-derived-cardiomyocytes
#1
Christian Zuppinger, George Gibbons, Priyanka Dutta-Passecker, Adrian Segiser, Henriette Most, Thomas M Suter
Recent innovations in stem cell technologies and the availability of human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) have opened new possibilities for studies and drug testing on human cardiomyocytes in vitro. Still, there are concerns about the precise nature of such 'reprogrammed' cells. We have performed an investigation using immunocytochemistry and confocal microscopy on several cellular features using commercially available hiPSC-CMs. For some selected developmentally regulated or cardiac chamber-specific proteins, we have compared the results from hiPSC-derived cardiomyocytes with freshly isolated, ventricular cardiomyocytes from adult rats...
June 21, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28735521/myd88-erk-nfkb%C3%A2-pathways-and-pro-inflammatory-cytokines-release-in-periodontal-ligament-stem-cells-stimulated-by-porphyromonas%C3%A2-gingivalis
#2
Francesca Diomede, Maria Zingariello, Marcos F X B Cavalcanti, Ilaria Merciaro, Jacopo Pizzicannella, Natalia De Isla, Sergio Caputi, Patrizia Ballerini, Oriana Trubiani
The present study was aimed at investigating whether human Periodontal Ligament Stem Cells (hPDLSCs) were capable of sensing and reacting to lipopolysaccharide from Porphyromonas gingivalis (LPS-G) which is widely recognized as a major pathogen in the development and progression of periodontitis. At this purpose hPDLCs were stimulated with 5 μg/mL LPS-G various times and the expression of toll-like receptor 4 (TLR4) was evaluated. Toll-like receptors (TLRs) play an essential role in innate immune signaling in response to microbial infections, and in particular TLR4, type-I transmembrane proteins, has been shown recognizing LPS-G...
May 24, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28735519/expression-of-the-hpv18-e6-oncoprotein-induces-dna-damage
#3
Elva I Cortés Gutiérrez, Catalina García-Vielma, Adriana Aguilar-Lemarroy, Veronica Vallejo-Ruíz, Patricia Piña-Sánchez, Pablo Zapata-Benavides, Jaime Gosalvez
This study investigated possible variations in DNA damage in HeLa cells with silenced expression of the HPV/E6 oncogene compared with HeLa cells with normal expression of the E6 oncogene using the DNA breakage detection-fluorescence in situ hybridization (DBD-FISH) technique and a whole human genome DNA probe. The variable levels of DNA breaks present were measured quantitatively using image analysis after whole-genome DNA hybridization. HeLa cells with silenced expression of the HPV18/E6 oncogene showed a significant decrease in DNA damage compared with parental cells with normal expression of the E6 oncogene...
June 15, 2017: European Journal of Histochemistry: EJH
https://www.readbyqxmd.com/read/28735510/fxa-inhibition-by-rivaroxaban-modifies-mechanisms-associated-with-the-pathogenesis-of-human-abdominal-aortic-aneurysms
#4
G Moñux, J J Zamorano-León, P Marqués, B Sopeña, J M García-García, G Laich de Koller, B Calvo-Rico, M A García-Fernandez, J Serrano, A López-Farré
AIM: To evaluate if Rivaroxaban, an oral factor Xa (FXa) inhibitor, could in vitro modify the expression of inflammatory and oxidative stress biomarkers in abdominal aortic aneurysmal (AAA) sites showing intraluminal thrombus. METHODS: AAA sites with intraluminal mural thrombus were obtained from six patients undergoing elective AAA repair. In addition, control abdominal aortic samples were obtained from six organ donors. AAA sites were incubated in the presence and absence of 50 nmol/L Rivaroxaban...
July 23, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28735502/regenerative-medicine-in-kidney-disease-where-we-stand-and-where-to-go
#5
REVIEW
Fernanda T Borges, Nestor Schor
The kidney is a complex organ with more than 20 types of specialized cells that play an important role in maintaining the body's homeostasis. The epithelial tubular cell is formed during embryonic development and has little proliferative capacity under physiological conditions, but after acute injury the kidney does have regenerative capacity. However, after repetitive or severe lesions, it may undergo a maladaptation process that predisposes it to chronic kidney injury. Regenerative medicine includes various repair and regeneration techniques, and these have gained increasing attention in the scientific literature...
July 22, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28735492/isolation-of-biologically-active-exosomes-from-plasma-of-patients-with-cancer
#6
Chang-Sook Hong, Sonja Funk, Theresa L Whiteside
A method for exosome isolation from human plasma was developed for rapid, high-throughput processing of plasma specimens obtained from patients with cancer. This method removes the bulk of plasma proteins associated with exosomes and can be used for comparative examinations of exosomes and their content in serial specimens of patients' plasma, allowing for monitoring changes in exosome numbers, profiles, and functions in the course of cancer progression or during therapy. The plasma-derived exosomes can be recovered in quantities sufficient for the characterization of their morphology by transmission electron microscopy (TEM), size and concentration by qNano, protein/lipid ratios, nucleic acid extraction, molecular profiling by Western blots or immune arrays, and functional assays...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28735489/a-zebrafish-model-for-evaluating-the-function-of-human-leukemic-gene-idh1-and-its-mutation
#7
Alvin C H Ma, Xiangguo Shi, Bai-Liang He, Yuhan Guo, Anskar Y H Leung
The recent advent of next-generation sequencing (NGS) has greatly accelerated identification of gene mutations in myeloid malignancies at unprecedented speed that will soon outpace their functional validation by conventional laboratory techniques and animal models. A high-throughput whole-organism model is useful for the functional validation of new mutations. We recently reported the use of zebrafish to evaluate the hematopoietic function of isocitrate dehydrogenase 1 (IDH1) and the effects of expressing human IDH1-R132H that is frequently identified in human acute myeloid leukemia (AML), in myelopoiesis, with a view to develop zebrafish as a model of AML...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28735473/low-concentration-bpaf-and-bpf-induced-cell-biological-effects-are-mediated-by-ros-in-mcf-7-breast-cancer-cells
#8
Bingli Lei, Su Sun, Jie Xu, Chenglian Feng, Yingxin Yu, Gang Xu, Minghong Wu, Wei Peng
Reactive oxygen species (ROS) induced by bisphenol A (BPA) have been implicated in cellular oxidative damage and carcinogenesis. It is not known whether the potential alternatives of BPA, bisphenol AF (BPAF), and bisphenol F (BPF) can also induce ROS involved in mediating biological responses. This study evaluated the toxicity of BPAF and BPF on cell proliferation, DNA damage, intracellular calcium homeostasis, and ROS generation in MCF-7 human breast cancer cells. The results showed that BPAF at 0.001-1 μM and BPF at 0...
July 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28735444/past-present-and-future-of-the-climate-and-human-health-commission
#9
Pablo Fdez-Arroyabe, Daysarih Tápanes Robau
The following paper presents the history of the Climate and Human Health Commission at the International Society of Biometeorology after more than one decade since its creation. A brief history of the origins of the human biometeorology is revealed through some of the main research topics and publications of the founders of the society in this field. Secondly, it is presented as a brief review of the activities of the commission in the last 10 years, based on the reports that have periodically been submitted by members of the commission to the Bulletin of the society...
July 22, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28735432/eucalyptol-sabinene-and-cinnamaldehyde-potent-inhibitors-of-salmonella-target-protein-l-asparaginase
#10
Archana Vimal, Dharm Pal, Timir Tripathi, Awanish Kumar
Salmonella typhimurium is a severe threat to human life. The treatment became more difficult with the emergence of multidrug resistance. In the present in silico study, a novel drug target L-asparaginase was tested against three ligands eucalyptol, sabinene, and cinnamaldehyde, major components of cardamom, nutmeg, and cinnamon, respectively. The lowest docking score was obtained for sabinene followed by eucalyptol and cinnamaldehyde i.e. -5.648, -3.939 and -3.469. The docking score of sabinene is also better than the standard drug, Ciprofloxacin (-4...
August 2017: 3 Biotech
https://www.readbyqxmd.com/read/28735419/modulation-of-human-kv4-3-kchip2-channel-inactivation-kinetics-by-cytoplasmic-ca-2
#11
Christiane Groen, Robert Bähring
The transient outward current (I to) in the human heart is mediated by Kv4.3 channels complexed with Kv channel interacting protein (KChIP) 2, a cytoplasmic Ca(2+)-binding EF-hand protein known to modulate Kv4.3 inactivation gating upon heterologous co-expression. We studied Kv4.3 channels co-expressed with wild-type (wt) or EF-hand-mutated (ΔEF) KChIP2 in human embryonic kidney (HEK) 293 cells. Co-expression took place in the absence or presence of BAPTA-AM, and macroscopic currents were recorded in the whole-cell patch-clamp configuration with different free Ca(2+) concentrations in the patch-pipette...
July 22, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28735415/cfd-simulation-of-aerosol-delivery-to-a-human-lung-via-surface-acoustic-wave-nebulization
#12
Morteza Yousefi, Oveis Pourmehran, Mofid Gorji-Bandpy, Kiao Inthavong, Leslie Yeo, Jiyuan Tu
Administration of drug in the form of particles through inhalation is generally preferable in the treatment of respiratory disorders. Conventional inhalation therapy devices such as inhalers and nebulizers, nevertheless, suffer from low delivery efficiencies, wherein only a small fraction of the inhaled drug reaches the lower respiratory tract. This is primarily because these devices are not able to produce a sufficiently fine drug mist that has aerodynamic diameters on the order of a few microns. This study employs computational fluid dynamics to investigate the transport and deposition of the drug particles produced by a new aerosolization technique driven by surface acoustic waves (SAWs) into an in silico lung model geometrically reconstructed using computed tomography scanning...
July 22, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28735401/determination-of-enzymes-associated-with-sulfite-toxicity-in-plants-kinetic-assays-for-so-apr-sir-and-in-gel-sir-activity
#13
Galina Brychkova, Assylay Kurmanbayeva, Aizat Bekturova, Inna Khozin, Dominic Standing, Dmitry Yarmolinsky, Moshe Sagi
The amino acid cysteine plays a major role in plant response to abiotic stress by being the donor of elemental sulfur for the sulfuration of the molybdenum cofactor, otherwise the last step of ABA biosynthesis, the oxidation of abscisic aldehyde, is inactivated. Additionally, cysteine serves as a precursor for the biosynthesis of glutathione, the reactive oxygen species scavenger essential for redox status homeostasis during stress. Cysteine is generated by the sulfate reductive pathway where sulfite oxidase (SO; EC 1...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28735383/brucellosis-causes-alteration-in-trace-elements-and-oxidative-stress-factors
#14
Naser Zanganeh, Ehsan Siahpoushi, Nejat Kheiripour, Sima Kazemi, Mohammad Taghi Goodarzi, Mohammad Yousef Alikhani
Brucellosis is regarded as one of the most common diseases among humans and livestock. In the present study, we aimed to assess the effect of this disease on the level of various cations including copper (Cu), manganese (Mn), zinc (Zn), and magnesium (Mg) as well as oxidative stress status in the serum of people suffering from brucellosis. The present case-study was carried out on 40 patients with brucellosis (case) and 20 healthy people (control). Blood specimens were taken from all the people and the level of essential trace elements and oxidative stress status were measured...
July 22, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28735373/systematic-heuristic-evaluation-of-computerized-consultation-order-templates-clinicians-and-human-factors-engineers-perspectives
#15
April Savoy, Himalaya Patel, Mindy E Flanagan, Michael Weiner, Alissa L Russ
We assessed the usability of consultation order templates and identified problems to prioritize in design efforts for improving referral communication. With a sample of 26 consultation order templates, three evaluators performed a usability heuristic evaluation. The evaluation used 14 domain-independent heuristics and the following three supplemental references: 1 new domain-specific heuristic, 6 usability goals, and coded clinicians' statements regarding ease of use for 10 sampled templates. Evaluators found 201 violations, a mean of 7...
August 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28735360/navigating-the-future-of-cardiovascular-drug-development-leveraging-novel-approaches-to-drive-innovation-and-drug-discovery-summary-of-findings-from-the-novel-cardiovascular-therapeutics-conference
#16
REVIEW
Thomas J Povsic, Rob Scott, Kenneth W Mahaffey, Robert Blaustein, Jay M Edelberg, Martin P Lefkowitz, Scott D Solomon, Jonathan C Fox, Kevin E Healy, Aarif Y Khakoo, Douglas W Losordo, Fady I Malik, Brett P Monia, Rusty L Montgomery, Jeffrey Riesmeyer, Gregory G Schwartz, Steven L Zelenkofske, Joseph C Wu, Scott M Wasserman, Matthew T Roe
PURPOSE: The need for novel approaches to cardiovascular drug development served as the impetus to convene an open meeting of experts from the pharmaceutical industry and academia to assess the challenges and develop solutions for drug discovery in cardiovascular disease. METHODS: The Novel Cardiovascular Therapeutics Summit first reviewed recent examples of ongoing or recently completed programs translating basic science observations to targeted drug development, highlighting successes (protein convertase sutilisin/kexin type 9 [PCSK9] and neprilysin inhibition) and targets still under evaluation (cholesteryl ester transfer protein [CETP] inhibition), with the hope of gleaning key lessons to successful drug development in the current era...
July 22, 2017: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/28735354/transplantation-sites-for-human-and-murine-islets
#17
Rebecca A Stokes, Kim Cheng, Amit Lalwani, Michael M Swarbrick, Helen E Thomas, Thomas Loudovaris, Tom W Kay, Wayne J Hawthorne, Philip J O'Connell, Jenny E Gunton
AIMS/HYPOTHESIS: Beta cell replacement is a potential cure for type 1 diabetes. In humans, islet transplants are currently infused into the liver via the portal vein, although this site has disadvantages. Here, we investigated alternative transplantation sites for human and murine islets in recipient mice, comparing the portal vein with quadriceps muscle and kidney, liver and spleen capsules. METHODS: Murine islets were isolated from C57BL6/J mice and transplanted into syngeneic recipients...
July 22, 2017: Diabetologia
https://www.readbyqxmd.com/read/28735351/multiple-correlation-analyses-revealed-complex-relationship-between-dna-methylation-and-mrna-expression-in-human-peripheral-blood-mononuclear-cells
#18
Fang-Fei Xie, Fei-Yan Deng, Long-Fei Wu, Xing-Bo Mo, Hong Zhu, Jian Wu, Yu-Fan Guo, Ke-Qin Zeng, Ming-Jun Wang, Xiao-Wei Zhu, Wei Xia, Lan Wang, Pei He, Peng-Fei Bing, Xin Lu, Yong-Hong Zhang, Shu-Feng Lei
DNA methylation is an important regulator on the mRNA expression. However, a genome-wide correlation pattern between DNA methylation and mRNA expression in human peripheral blood mononuclear cells (PBMCs) is largely unknown. The comprehensive relationship between mRNA and DNA methylation was explored by using four types of correlation analyses and a genome-wide methylation-mRNA expression quantitative trait locus (eQTL) analysis in PBMCs in 46 unrelated female subjects. An enrichment analysis was performed to detect biological function for the detected genes...
July 22, 2017: Functional & Integrative Genomics
https://www.readbyqxmd.com/read/28735349/connecting-the-dots-between-fatty-acids-mitochondrial-function-and-dna-methylation-in-atherosclerosis
#19
REVIEW
Silvio Zaina, Gertrud Lund
PURPOSE OF REVIEW: The quest for factors and mechanisms responsible for aberrant DNA methylation in human disease-including atherosclerosis-is a promising area of research. This review focuses on the role of fatty acids (FAs) as modulators of DNA methylation-in particular the role of mitochondrial beta-oxidation in FA-induced changes in DNA methylation during the progression of atherosclerosis. RECENT FINDINGS: Recent publications have advanced the knowledge in all areas touched by this review: the causal role of lipids in shaping the DNA methylome, the associations between chronic degenerative disease and mitochondrial function, the lipid composition of the atheroma, and the relevance of DNA hypermethylation in atherosclerosis...
September 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28735348/analysis-of-the-cd8-t-cell-anti-hiv-activity-in-heterologous-cell-co-cultures-reveals-the-benefit-of-multiple-hla-class-i-matches
#20
M Scott Killian, Fernando Teque, Ramu Sudhagoni
CD8(+) T lymphocytes can reduce the production of human immunodeficiency virus 1 (HIV-1) by CD4(+) T cells by cytotoxic and non-cytotoxic mechanisms. To investigate the involvement of human leukocyte antigen (HLA) class I compatibility in anti-HIV responses, we co-cultured primary CD8(+) T cells, isolated from the peripheral blood of HIV-1-infected individuals, with panels of autologous and heterologous acutely HIV-1-infected primary CD4(+) T cells. Altogether, CD8(+) T cell anti-HIV activity was evaluated in more than 200 co-cultures...
July 22, 2017: Immunogenetics
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