Nitric oxide sensor based on carbon fiber covered with nickel porphyrin layer deposited using optimized electropolymerization procedure

Hrbáč, Jan; Gregor, Čeněk; Machová, Markéta; Kráľová, Jana; Bystroň, Tomáš; Čı́ž, Milan; Lojek, Antonı́n

doi:10.1016/j.bioelechem.2006.09.007

Cited by 33 publications

(10 citation statements)

References 35 publications

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“…In our previous work [33], we studied the effect of pretreatment on nitric oxide, nitrite, ascorbate, and dopamine. For the above analytes, the sensitivities as well as detection limits were improved by factors of 6, 35, 54, and 4.5, respectively.…”

Section: Resultsmentioning

confidence: 99%

Electrochemically Pretreated Carbon Microfiber Electrodes as Sensitive HPLC-EC Detectors

Bartošová

Riman

Jakubec

et al. 2012

The Scientific World Journal

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The paper focuses on the analysis and detection of electroactive compounds using high-performance liquid chromatography (HPLC) combined with electrochemical detection (EC). The fabrication and utilization of electrochemically treated carbon fiber microelectrodes (CFMs) as highly sensitive amperometric detectors in HPLC are described. The applied pretreatment procedure is beneficial for analytical characteristics of the sensor as demonstrated by analysis of the model set of phenolic acids. The combination of CFM with separation power of HPLC technique allows for improved detection limits due to unique electrochemical properties of carbon fibers. The CFM proved to be a promising tool for amperometric detection in liquid chromatography.

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Section: Resultsmentioning

confidence: 99%

Electrochemically Pretreated Carbon Microfiber Electrodes as Sensitive HPLC-EC Detectors

Bartošová

Riman

Jakubec

et al. 2012

The Scientific World Journal

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“…The potential ability of extracts to scavenge NO in chemical systems was tested by electrochemical measurement of NO [28]. NO was measured using three electrode systems: a porphyrinic microsensor working electrode, counter electrode, and a reference electrode were connected to the ISO-NO MARK II potentiostat (WPI, USA) [28].…”

Section: Methodsmentioning

confidence: 99%

“…NO was measured using three electrode systems: a porphyrinic microsensor working electrode, counter electrode, and a reference electrode were connected to the ISO-NO MARK II potentiostat (WPI, USA) [28]. The injection of the 2 μ L NO-saturated water into the measurement glass vial (final concentration of NO = 2.38 μ M) caused a rapid increase with subsequent gradual decrease of the NO induced signal until it reached the background current [29].…”

Section: Methodsmentioning

confidence: 99%

On the Molecular Pharmacology of Resveratrol on Oxidative Burst Inhibition in Professional Phagocytes

Nosáľ

Drábiková

Jančinová

et al. 2014

Oxidative Medicine and Cellular Longevity

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Resveratrol—3,5,4′-trihydroxystilbene—possesses antioxidant activities in vitro. It dose-dependently inhibited the generation of peroxyl, hydroxyl, peroxides, and lipid peroxidation products in cell free systems. Oxidative burst of whole human blood stimulated with PMA, fMLP, OpZ, and A23187 was inhibited in a concentration-dependent way, indicating suppression of both receptor and nonreceptor activated chemiluminescence by resveratrol. Results from isolated human neutrophils revealed that resveratrol was active extracellularly as well as intracellularly in inhibiting the generation of reactive oxygen species. Liberation of ATP and analysis of apoptosis showed that in the concentration of 100 μM, resveratrol did not change the viability and integrity of isolated neutrophils. Western blot analysis documented that resveratrol in concentrations of 10 and 100 μM significantly decreased PMA-induced phosphorylation of PKC α/βII. Dose-dependent inhibition of nitrite production and iNOS protein expression in RAW 264.7 cells indicated possible interference of resveratrol with reactive nitrogen radical generation in professional phagocytes. The results suggest that resveratrol represents an effective naturally occurring substance with potent pharmacological effect on oxidative burst of human neutrophils and nitric oxide production by macrophages. It should be further investigated for its pharmacological activity against oxidative stress in ischaemia reperfusion, inflammation, and other pathological conditions, particularly neoplasia.

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“…Furthermore, an important property of polymetallic porphyrins is their high ability to produce polymeric films on the electrode surfaces by electrochemical polymerization [31][32][33][34]. In particular, the use of porphyrins containing ruthenium complexes in the peripheral positions, as the starting material for electropolymerization by cyclic voltammetry, has excelled over other methods [35][36][37].…”

Section: Introductionmentioning

confidence: 98%

Electrochemical behavior of hydroquinone and catechol at glassy carbon electrode modified by electropolymerization of tetraruthenated oxovanadium porphyrin

Ribeiro

Vilarinho

Ramos

et al. 2015

Electrochimica Acta

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Nitric oxide sensor based on carbon fiber covered with nickel porphyrin layer deposited using optimized electropolymerization procedure

Cited by 33 publications

References 35 publications

Electrochemically Pretreated Carbon Microfiber Electrodes as Sensitive HPLC-EC Detectors

Electrochemically Pretreated Carbon Microfiber Electrodes as Sensitive HPLC-EC Detectors

On the Molecular Pharmacology of Resveratrol on Oxidative Burst Inhibition in Professional Phagocytes

Electrochemical behavior of hydroquinone and catechol at glassy carbon electrode modified by electropolymerization of tetraruthenated oxovanadium porphyrin

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