Electrochemical determination of theophylline in foodstuff, tea and soft drinks based on urchin-like CdSe microparticles modified glassy carbon electrode

Yin, Huanshun; Meng, Xiaomeng; Su, Haichao; Xu, Minrong; Ai, Shiyun

doi:10.1016/j.foodchem.2012.02.197

Cited by 61 publications

(12 citation statements)

References 33 publications

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“…The current study results coincided with Yin et al, (2012) found that levels of theophylline above therapeutic levels can cause tachyarrhythmia and cardiac arrest. Salamzadeh et al, (2008) stated that the most common side effect of theophylline toxicity is sinus tachycardia Mohamad et al, (2009) reported similar findings.…”

Section: Discussionsupporting

confidence: 91%

“…On measuring theophylline serum level in the present study cases that had theophylline toxicity, the serum theophylline level ranged between 2-75 µg/ml with mean value of 29.3 ± 14.4 µg/ml. This level is above therapeutic level as reported by Nolan et al, (2005) and Yin et al, (2012) who stated that theophylline has a narrow therapeutic window with an optimal plasma concentration of 10-20 µg/m. Above this concentration, toxic effects such as arrhythmias and convulsions may occur, especially when given rapidly by intravenous injection.…”

Section: Discussionmentioning

confidence: 50%

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Relation between Theophylline Serum Level with ECG Changes and Poison Severity Score (PSS) Among Some Theophylline Intoxicated Patients in Menofia Poison Control Center (MPCC) A Prospective Study

Amin

Seidy

Hammad

et al. 2013

Ain Shams Journal of Forensic Medicine and Clinical Toxicology

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All rights reserved. AbstractThere are numerous toxins and drugs that can cause, in overdose, ECG changes, even in patients without history of cardiac pathology. Theophylline intoxication results in substantial morbidity and mortality, particularly in those with chronic overmedication. The aim of this work was to study ECG changes in cases of poisoning by theophylline overdose that were admitted to MPCC over 2011 and the relation between ECG changes, theophylline blood level and poison severity score. In this study, theophylline overdose patients admitted to MPCC in the period from 1 st of January 2011 to 31 st of December 2011 were included. The total patients' number was 44 patients. Most cases of the study were females (77.2%) in the age group of (20-<40) years (40.9%), mainly from rural side (65.9%). Regarding relation between theophylline serum level and clinical manifestations, a significant relation was found between serum level and each of vomiting and dizziness, where both were noticed with majority of cases of minimal and moderate toxicity serum level. Regarding poison severity score, exactly one half of moderate and severe cases had minimal toxicity serum level, and the other half had moderate toxicity level. A significant negative correlation between theophylline serum level and PCO 2 was found. There was a non significant negative correlation between theophylline serum level and each of Na and K blood level. Concerning ECG changes, a significant relation was found between theophylline serum level and each of sinus tachycardia and second degree heart block.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 50%

Relation between Theophylline Serum Level with ECG Changes and Poison Severity Score (PSS) Among Some Theophylline Intoxicated Patients in Menofia Poison Control Center (MPCC) A Prospective Study

Amin

Seidy

Hammad

et al. 2013

Ain Shams Journal of Forensic Medicine and Clinical Toxicology

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“…Gallic acid was further determined in black tea real samples. In 2012, Yin et al., reported the electrochemical detection of theophylline using cadmium selenide microparticles modified GCE, designated as GCE/CdSe, in PBS (pH 6.0) [42], and extended it in tea and soft drink commercial samples. From 2017–2018, there were four reports available for the detection of caffeic acid, caffeine and rutin with polymer‐modified GCE [43–46].…”

Section: Classification Of Different Techniques For the Detection Of mentioning

confidence: 99%

Electrochemical Detections of Tea Polyphenols: A Review

Saikrithika

2020

Electroanalysis

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Tea, contains an abundant amount of polyphenols, has many health benefits, and acts as a remedy for many diseases, including cardiovascular and neurological disorders. In this article, we have reviewed the reported electrochemical techniques for the detection of tea polyphenols under the sub‐headings, separation coupled with electrochemical detection, direct electrochemical detection, bioelectrochemical sensing, simultaneous electrochemical detection and flow injection analysis.

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“…M a n u s c r i p t 15 The observed stripping peak of MA at MWCNTs-Nf/GNPs modified SPE is strongly affected by parameters such as E dep , and t dep .…”

Section: Optimization Of Conditions For the Swasvmentioning

confidence: 99%

“…In electrochemical analysis, the key component is electrode modification, which requires the selection of suitable material to improve the determination performance [15]. In principle, the electroanalytical detection limit at a nanoelectrode can be much lower than that at an analogous macrosized electrode because the ratio between the faradic and capacitive currents is higher [16].…”

Section: Introductionmentioning

confidence: 99%

Impedimetric and stripping voltammetric determination of methamphetamine at gold nanoparticles-multiwalled carbon nanotubes modified screen printed electrode

Rafiee

Fakhari

Ghaffarzadeh

2015

Sensors and Actuators B: Chemical

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Electrochemical determination of theophylline in foodstuff, tea and soft drinks based on urchin-like CdSe microparticles modified glassy carbon electrode

Cited by 61 publications

References 33 publications

Relation between Theophylline Serum Level with ECG Changes and Poison Severity Score (PSS) Among Some Theophylline Intoxicated Patients in Menofia Poison Control Center (MPCC) A Prospective Study

Relation between Theophylline Serum Level with ECG Changes and Poison Severity Score (PSS) Among Some Theophylline Intoxicated Patients in Menofia Poison Control Center (MPCC) A Prospective Study

Electrochemical Detections of Tea Polyphenols: A Review

Impedimetric and stripping voltammetric determination of methamphetamine at gold nanoparticles-multiwalled carbon nanotubes modified screen printed electrode

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