scholarly journals Permeability of Human Tooth Surfaces Studied In Vitro by Electrochemical Impedance Spectroscopy

2012 ◽  
Vol 24 (5) ◽  
pp. 1033-1038 ◽  
Author(s):  
Marcos Pita ◽  
Jan Halámek ◽  
Soujanya Chinnapareddy ◽  
Donald J. White ◽  
Vladimir Gartstein ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Human Tooth ◽  
Tooth Surfaces

In Vitro Evaluation of Degradation of Biodegradable Silane Based Coating on Mg-Zn-Ca Alloy in a Physiological Environment

2013 ◽  
Vol 765 ◽  
pp. 803-807
Author(s):  
Gaur Swati ◽  
Anand Sawroop Khanna ◽  
Raghuvir Kumar Singh Raman
Keyword(s):  
Corrosion Resistance ◽  
Electrochemical Impedance Spectroscopy ◽  
Magnesium Alloy ◽  
Impedance Spectroscopy ◽  
Body Fluid ◽  
Degradation Rate ◽  
Electrochemical Impedance ◽  
Silane Coating ◽  
Corrosion Barrier

In the present study, combinations of a phosphonato silane with a precursor, Methyltriethoxy silane (MTEOS) in various ratios were applied onto the alloy Mg-6Zn-Ca. The corrosion resistance of the coated and uncoated specimens in a modified simulated body fluid (m-SBF) was characterized by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Results suggest that the silane coating significantly decreases the degradation rate of the magnesium alloy, indicating its potential to be used as a corrosion barrier for magnesium alloy temporary implants.

scholarly journals Electrochemical Detection of Prostate Cancer Biomarker PCA3 Using Specific RNA-Based Aptamer Labelled with Ferrocene

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 59
Author(s):  
Alexei Nabok ◽  
Hisham Abu-Ali ◽  
Sarra Takita ◽  
David P. Smith
Keyword(s):  
Prostate Cancer ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Cancer Biomarker ◽  
Affinity Constant ◽  
Cyclic Voltammograms ◽  
Cathodic Current ◽  
Transfer Resistance

This paper reports on a feasibility study of electrochemical in-vitro detection of prostate cancer biomarker PCA3 (prostate cancer antigen 3) in direct assay with specific RNA aptamer labelled with a redox group (ferrocene) and immobilized on a screen-printed gold electrode surface. The cyclic voltammograms and electrochemical impedance spectroscopy methods yield encouraging results on the detection of PCA3 in a range of concentrations from 1 μg/mL down to 0.1 ng/mL in buffer solutions. Both anodic and cathodic current values in cyclic voltammograms measurements and charge transfer resistance values in electrochemical impedance spectroscopy experiments correlate with the PCA3 concentration in the sample. Kinetics studies of the binding of the PCA3 to our aptamer demonstrated high specificity of the reaction with a characteristic affinity constant of approximately 4·10−10 molar. The results of this work provide a background for the future development of novel, highly sensitive and cost-effective diagnostic methodologies for prostate cancer detection.

Electrochemical Impedance Spectroscopy: Evaluation of Drug Delivery System of Alpha-Tricalcium Phosphate Cement

2015 ◽  
Vol 820 ◽  
pp. 293-296
Author(s):  
Julio Cesar Colpo ◽  
Caroline Pigatto ◽  
Camila F. Escobar ◽  
Tiago Delbrücke ◽  
Jose R. Jurado ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Tricalcium Phosphate ◽  
Drug Delivery Systems ◽  
Electrochemical Impedance ◽  
In Vitro Study ◽  
Controlled Drug Delivery ◽  
Delivery Systems

Tricalcium phosphate cement (α-TCP) can be used in various fields of health, including as drug delivery systems. The application of a biomaterial based on α-TCP could enable both the constant drug delivery as support and shape damaged muscleskeletics tissues until which can be regenerated by the organism itself, replacing the biomaterial, while maintaining stable levels of the drug in the organism. The aim of this study was to evaluate the release of gentamicin sulfate using the technique of electrochemical impedance spectroscopy in drug delivery systems of α-TCP. The results obtained in vitro study validated the proposed methodology for assessment of controlled drug delivery systems on the basis of α-TCP.

In-air EIS sensor for in situ and real-time monitoring of in vitro epithelial cells under air-exposure

Lab on a Chip ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 1751-1761
Author(s):  
Seungbeom Noh ◽  
Hanseup Kim
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Epithelial Cells ◽  
Real Time ◽  
Electrochemical Impedance ◽  
Air Monitoring ◽  
Real Time Monitoring ◽  
Air Exposure

This paper reports in-air monitoring of in vitro monolayer cells under air-exposure utilizing electrochemical impedance spectroscopy (EIS).

Electrochemical impedance spectroscopy of preoxidized MA 956 superalloy during in vitro experiments

Biomaterials ◽  
1995 ◽  
Vol 16 (9) ◽  
pp. 735-740 ◽  
Author(s):  
M.L. Escudero ◽  
J.L. González-Carrasco ◽  
C. García-Alonso ◽  
E. Ramírez
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
In Vitro Experiments
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