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Low Cost EIS Methodology to Characterize Microelectrode Arrays used in Biological Applications
C. A. Santos *, M. A. Flores*, O. Pilloni* , J. Mireles Jr**., A. Falcón ***, T. Fiordelisio ***, L. Oropeza-Ramos*

Diagnostics of electrochemical impedance in micro electrodes for biological potentials measurements is essential. A low cost EIS methodology to characterize microelectrode arrays in contact with cellular medium is presented, and results are validated by comparing them to a commercial system.

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Micro array of Ag-AgCl electrodes for cellular stimulation and sensing
O. Pilloni*, M. A. Flores*, C. A. Santos*, A. Torres**, J. García**, H. González**, L. Oropeza-Ramos*.

Silver-Silver Chloride is investigated as a fabrication material of planar microelectrodes for sensing and stimulation of excitable cells. A theoretical design method is presented. The platform was tested for different excitable tissue confirming its feasibility.

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Human Cardiomyocytes Derived from Induced Pluripotent Stem Cells: High Throughput and High Content Assessment of Cardiac Toxicity and Drug Efficacy by Monitoring Cytosolic Free Calcium Transients
1Kettenhofen R, 1Duenbostell A, 2Niedereichholz T, 3D’Angelo JM, 4Horai H, 5Schwengberg S, 1Bohlen H, 6Licher T"

Introduction of selected, pure human cardiomyocytes derived from induced pluripotent stem cell (hiPSCM) into a calcium transient imaging high throughput screening (HTS) assay to assess cardiotoxicity and drug efficacies.

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Novel Gpr39 Agonists: Correlation Of Binding Affinity Using Label-Free Back-Scattering Interferometry With Potency In Functional Assays
Daniel Brown (1), Niklas Larsson (2), Ola Fjellström (3), Anders Johansson (3), Sara Lundqvist (2), Johan Brengdahl (2), and Richard J. Isaacs (1)

We describe the application of back-scattering interferometry (BSI) to the characterization of small molecule ligand binding to human GPR39 (a GPCR targeted for type-2 diabetes therapy) overexpressed in crude membrane fractions in free solution, including how BSI-derived affinity and functional assay-derived potency correlate for compounds of varying scaffolds.

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Novel Gpr39 Agonists: Correlation Of Binding Affinity Using Label-Free Back-Scattering Interferometry With Potency In Functional Assays
Daniel Brown (1), Niklas Larsson (2), Ola Fjellström (3), Anders Johansson (3), Sara Lundqvist (2), Johan Brengdahl (2), and Richard J. Isaacs (1)

We describe the application of back-scattering interferometry (BSI) to the characterization of small molecule ligand binding to human GPR39 (a GPCR targeted for type-2 diabetes therapy) overexpressed in crude membrane fractions in free solution, including how BSI-derived affinity and functional assay-derived potency correlate for compounds of varying scaffolds

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MAB Discovery Technology: A Smart Way to Highly Diverse and Functional Therapeutic Antibodies
Hans-Willi Krell

MAB Discovery GmbH developped a highly integrated process which provides diverse antibodies by starting with a high number of B cells and filtering the relevant antibodies by an early-on functional screening.

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PRESEPSIN, A SOLUBLE CD14-SUBTYPE, A POSSIBLE NEW BIOMARKER INCREASES IN SEPTIC PATIENTS’ PLASMA FROM PEDIATRIC DEPARTMENT.
Hayato YAMAGUCHI1), Satoshi KIMURA1), Seiji FUKUOKA1), Emiko NAKAMA1), Hideyasu OTO2), Makoto INOUE2), Takashi SOGA2), Shigetaka KITAZAWA2), Yoh UMEDA2)

Increased plasma concentration of soluble CD14-subtype (presepsin) was observed in pediatric patients with bacteremia. Presepsin could be a possible biomarker of sepsis in pediatric patients, however, their reference interval in children could be lower than that of adults. More studies with larger number of samples are required to confirm the result.

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A Novel Approach Toward Microfluidic Drug Metabolite Synthesis – Electrosynthetic Methodology Simulating Cytochrome (CYP450) Oxidation
Romain Stalder, Gregory P. Roth and Philip Podmore

A novel microfluidic technology and electrochemical synthesis method is demonstrated for the efficient generation of known drug metabolites. These metabolites are typically generated on first pass hepatic oxidation in vivo. The FLUX Module, a new microfluidic electrochemical cell manufactured by Syrris Ltd., has been employed to generate the metabolites of five commercial drugs: Tolbutamide, Chlorpromazine, Diclofenac, Primidone and Albendazole.

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Exploring the Therapeutic Potential of a Peptide Derived from a Poxviral Immune Evasion Protein
Dylan Lawless

•9R-VIPER is an effective at TLR4 and TLR2 signal inhibition than VIPER.
•The structure of 9R-VIPER and the mutant peptide L6AE10A were investigated by NMR.
•Important structural information was uncovered and an explanation was found for the loss
of activity when important residues are changed.

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Showing Results 71 - 80 of 227
Scientific News
Paving the way to Better Ovarian Cancer Diagnosis
Aïcha BenTaieb will present her invention for automated identification of ovarian cancer’s many subtypes at an international conference this fall.
New Tech Enables Epigenomic Analysis with a Mere 100 Cells
A new technology that will dramatically enhance investigations of epigenomes, the machinery that turns on and off genes and a very prominent field of study in diseases such as stem cell differentiation, inflammation and cancer has been developed by researchers at Virginia Tech.
Futuristic Brain Probe Allows for Wireless Control of Neurons
NIH-funded scientists developed an ultra-thin, minimally invasive device for controlling brain cells with drugs and light.
Microfluidic Device Mixes And Matches DNA For Synthetic Biology
Researchers have developed a microfluidic device that quickly builds packages of DNA and delivers them into bacteria or yeast for further testing.
Artificial Pancreas Controls Diabetes
Scientists are reporting the development of an implantable “artificial pancreas” that continuously measures a person’s blood sugar, or glucose, level and can automatically release insulin as needed.
Major Step for Implantable Drug-Delivery Device
MIT spinout signs deal to commercialize microchips that release therapeutics inside the body.
Smart Insulin Patch Could Replace Painful Injections for Diabetes
A joint effort between diabetes doctors and biomedical engineers could revolutionize how people with diabetes keep their blood sugar levels in check.
The Secrets of Secretion
Researchers have hacked nature's blueprints to create a new technology that could have broad-reaching impact on drug delivery systems and self-healing and anti-fouling materials.
New Tool on Horizon for Surgeons Treating Cancer Patients
Surgeons could know while their patients are still on the operating table if a tissue is cancerous, according to researchers.
Heartbeat on a Chip Could Improve Pharmaceutical Tests
A gravity-powered chip that can mimic a human heartbeat outside the body could advance pharmaceutical testing and open new possibilities in cell culture because it can mimic fundamental physical rhythms.
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