Small bowel obstruction due to trichobezoar

Goyal, Jitendra; Mittal, Ashok

doi:10.1007/bf02749279

Cited by 7 publications

(4 citation statements)

References 1 publication

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“…After modification with single-wall nanotubes a well-defined anodic peak appeared at~461 mV which corresponds to the electrochemical oxidation of 2,8-DHA (I) to the corresponding diimine (II) as shown in Scheme 1. Diimine rapidly undergoes hydrolysis to give allantoin as the final product of oxidation at pH 7.2 [30]. On scanning in the negative direction, a reduction peak was observed at 396 mV which is due to the reduction of the oxidation The ratio of anodic and cathodic peak currents was greater than unity thus confirming the quasi-reversible nature of the redox couple.…”

Section: Resultsmentioning

confidence: 50%

Electrochemical Sensor Based on Oxidation of 2,8‐Dihydroxyadenine to Monitor DNA Damage in Calf Thymus DNA

2011

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A novel and reliable direct electrochemical method has been established to monitor DNA damage in acid hydrolyzed calf thymus DNA, based on the determination of 2,8-dihydroxyadenine (2,8-DHA). A single-wall carbon nanotubes (SWCNT) modified edge plane pyrolytic graphite electrode (EPPGE) has been used as a sensor to monitor the DNA damage. 2,8-DHA the main in vivo adenine oxidation product undergoes oxidation at~395 mV at SWCNT modified EPPGE using square wave voltammetry (SWV). The sensor exhibits potent and persistent electron-mediating behavior. A well-defined oxidation peak for the oxidation of 2,8-DHA was observed at modified electrode with lowering of peak potential and increase in peak current as compared to bare EPPGE. At optimal experimental conditions, the catalytic oxidative peak current was responsive with the 2,8-DHA concentrations ranging from 0.05 nM to 100 nM. The detection limit was 3.8 10 À11 M and limit of quantification was 1.27 10 À10 M. The modified electrode exhibited high stability and reproducibility.

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Section: Resultsmentioning

confidence: 50%

Electrochemical Sensor Based on Oxidation of 2,8‐Dihydroxyadenine to Monitor DNA Damage in Calf Thymus DNA

2011

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“…12,13 Intestinal obstruction in the terminal ileum is uncommon and may cause ischemia and perforation. 14,15 Most commonly, bezoars produce obstructive symptoms, but they may cause ulceration and bleeding. 16 Overall, gastrointestinal obstruction has been documented in 26% of the patients, and peritonitis in 18%.…”

Section: Discussionmentioning

confidence: 99%

Case presentation on a rare cause of small bowel obstruction- trichobezoar: a case report

et al. 2021

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“…Fast scan voltammetry at the CFS has better LOD (1 µM) than reported previously for 2,8-DHA [21]. Furthermore it allows the resolution of the complex oxidation processes attributed to 2,8-DHA dimer formation and subsequent oxidation [21,22,23]. It has been suggested that the dimers should be detected at high scan rates [21].…”

Section: 8-dha At Different Scan Ratesmentioning

confidence: 95%

“…1.12 V ( Figure 2B and 2C, respectively) . The increase and decease in the intensity of the oxidation peaks may be attributed to the proposed oxidation pathway of 2,8-DHA [21,22].…”

Section: 8-dha At Different Scan Ratesmentioning

confidence: 99%

Electrochemically activated carbon fiber sensors as fast and sensitive adenine metabolite amperometric detectors

El-Nour

2013

Eur. J. Chem.

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A direct and fast voltammetric method of determination of 2,8-dihydroxyadenine (2,8-DHA), with a novel nanostructured carbon fiber sensor (CFS), is revealed in this work. To achieve high sensitivity required in biological determinations, before the determination of 2,8-DHA, carbon fiber sensors were activated by electrochemical pretreatment method. The electrochemical activation process generates a nanostructured carbon fiber surface, which is stable. The high stability of the active surface, and the high reproducibility of the activation process, leads to reproducible and sensitive fast scan voltammetric (

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Small bowel obstruction due to trichobezoar

Cited by 7 publications

References 1 publication

Electrochemical Sensor Based on Oxidation of 2,8‐Dihydroxyadenine to Monitor DNA Damage in Calf Thymus DNA

Electrochemical Sensor Based on Oxidation of 2,8‐Dihydroxyadenine to Monitor DNA Damage in Calf Thymus DNA

Case presentation on a rare cause of small bowel obstruction- trichobezoar: a case report

Electrochemically activated carbon fiber sensors as fast and sensitive adenine metabolite amperometric detectors

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