Kidney injury molecule-1 expression in rat proximal tubule after treatment with segment-specific nephrotoxicants: a tool for early screening of potential kidney toxicity.
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Caustic ulcers caused by cement aqua: report of a case.
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Chromium is widely used in various industries including construction sector. Skin contact with cement has been associated with allergic or irritant contact dermatitis. Contact dermatitis is one of the most frequently reported health problems among construction workers. Irritant contact dermatitis from cement ranges from cement burns to cumulative irritant contact dermatitis. Cement burns are rarely reported and are considered a severe form of acute irritant contact dermatitis. They are associated with amateur user working in a short ready-mix time-frame with poor protective measures. They usually result in significant morbidity and initially are associated with minimal discomfort. We report a typical case. (+info)
Assessment of the human epidermal model LabCyte EPI-MODEL for In vitro skin corrosion testing according to the OECD test guideline 431.
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A new OECD test guideline 431 (TG431) for in vitro skin corrosion tests using human reconstructed skin models was adopted by OECD in 2004. TG431 defines the criteria for the general function and performance of applicable skin models. In order to confirm that the new reconstructed human epidermal model, LabCyte EPI-MODEL is applicable for the skin corrosion test according to TG431, the predictability and repeatability of the model for the skin corrosion test was evaluated. The test was performed according to the test protocol described in TG431. Based on the knowledge that LabCyte EPI-MODEL is an epidermal model as well as EpiDerm, we decided to adopt the the Epiderm prediction model of skin corrosion for the LabCyte EPI-MODEL, using twenty test chemicals (10 corrosive chemicals and 10 non-corrosive chemicals) in the 1(st) stage. The prediction model results showed that the distinction of non-corrosion to corrosion corresponded perfectly. Therefore, it was judged that the prediction model of EpiDerm could be applied to the LabCyte EPI-MODEL. In the 2(nd) stage, the repeatability of this test protocol with the LabCyte EPI-MODEL was examined using twelve chemicals (6 corrosive chemicals and 6 non-corrosive chemicals) that are described in TG431, and these results recognized a high repeatability and accurate predictability. It was concluded that LabCyte EPI-MODEL is applicable for the skin corrosive test protocol according to TG431. (+info)
Comparative study of trichloroacetic acid versus glycolic acid chemical peels in the treatment of melasma.
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Colopharyngoplasty for intractable caustic pharyngoesophageal strictures in an indigenous African community--adverse impact of concomitant tracheostomy on outcome.
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The relationship between clinical findings and esophageal injury severity in children with corrosive agent ingestion.
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BACKGROUND: The aim of the study was to investigate the indicators of corrosive esophageal injury (EI) severity in children. METHODS: We retrospectively reviewed data from children who accidentally ingested corrosive substance and underwent endoscopic evaluation over a one-year period. A total of 134 consecutive children with corrosive agent ingestion who underwent diagnostic endoscopy (74 boys, 60 girls) were included in this study. Patients were divided into two groups as low-grade and high-grade EI. Statistical differences and predictive values of common signs and symptoms and white blood cell (WBC) count of patients with low- and high-grade EI were analyzed. RESULTS: The majority of patients (70%) were asymptomatic at the initial examination. We found that drooling saliva and oral lesions were significantly more frequent in high-grade injury (p<0.05). Mean WBC count in the high-grade EI group was significantly higher than in the low-grade EI group (p=0.000). Sensitivity, specificity and predictive values of clinical findings in children were analyzed; none of them was shown to be valuable for estimating EI severity. WBC count was sensitive, but it is not a good predictor. CONCLUSION: Our study demonstrated the relationship between clinical findings and corrosive EI severity in children with accidental corrosive ingestion, but direct visualization of the esophagus is required for definitive diagnosis. (+info)