IVAG: An Integrative Visualization Application for Various Types of Genomic Data Based on R-Shiny and the Docker Platform

Next-generation sequencing (NGS) technology has become a trend in the genomics research area. There are many software programs and automated pipelines to analyze NGS data, which can ease the pain for traditional scientists who are not familiar with computer programming. However, downstream analyses, such as finding differentially expressed genes or visualizing linkage disequilibrium maps and genome-wide association study (GWAS) data, still remain a challenge. Here, we introduce a dockerized web application written in R using the Shiny platform to visualize pre-analyzed RNA sequencing and GWAS data. In addition, we have integrated a genome browser based on the JBrowse platform and an automated intermediate parsing process required for custom track construction, so that users can easily build and navigate their personal genome tracks with in-house datasets. This application will help scientists perform series of downstream analyses and obtain a more integrative understanding about various types of genomic data by interactively visualizing them with customizable options.

The Anesthetic Management of the Patient with a Mediastinal Mass: A case report / 대한마취과학회지

General anesthesia for the removal of a large mediastinal mass has been associated with life-threatening airway obstruction. We present a case of general anesthesia for a patient with superior posterior mediastinal mass and critical airway compression who was allowed to maintain spontaneous ventilation throughout general anesthesia for a thoracotomy. The patient was a 5-year-old boy complaining of productive cough and intermittent fever for 3 weeks. His chest radiograph and magnetic resonance imaging(MRI) film demonstrated a critically narrowed and deviated trachea at the level of the thoracic inlet to the proximal portion of the right bronchus. We can secure the airway by spontaneous ventilation without muscle relaxation and allowing the patient to breathe spontaneously and insertion of endotracheal tube distal to the narrowed portion of trachea.

Oropharyneal Bezoar in a Patient with Amyotrophic Lateral Sclerosis under Mechanical Ventilation: A case report / 대한구급학회지

Bezoars are not uncommonly found during upper gastrointestinal investigations (UGI), are known to be associated with conditions causing stasis changes in gastrointestinal tract. We described here a curious presentation of an oropharyngea bezoar associated with medication and tube feeding. Only few cases of regurgated esophageal bezoar have been reported. A 54 years old man with amyotropic lateral sclerosis required ventilatory support. Nasogastric tube was placed, enteral feeding with special liquid diet (Geenvia TF) was begun. In addition, almagate was given via the feeding tube. Tracheotomy was done for long term mechanical ventilation support. On the 10th day of ICU stay, he complained of foreign body sensation in oral cavity. We could find a white brown colored 15cm solid mass in deep oropharynx. Some factors including sucralfate and the peripheral neuropathy have been suspected to be ascribed forming the esophageal bezoar. Gastrointestinal motility was decrease in patients with peripheral neuropathy. In this case, aluminum hydroxides, one of the aluminium substance like sucralfate, was given to the patient with the peripheral neuropathy. From this experience, we became to know that it is necessary to use the aluminium compound anti-ulcer drug with caution in the patients with the gastrointestinal depression.

Does Heparin Attenuate the Renal Injury Induced by Ischemia Reperfusion in the Rabbit? / 대한마취과학회지

BACKGROUND: Increasing degrees of medullary hyperemia induced by ischemia reperfusion injury were associated with renal dysfunction. A possible mechanism may be that ischemia causes alterations in the structure and function of vascular membranes which leads to an aggregation of red blood cells in the medullary vessel. It has been shown that heparin prevents postischemic endothelial cell dysfunction. Aim of this study was to evaluate heparin effects on renal hyperemia induced by ischemia reperfusion injury. METHOD: In this study, fifteen rabbits were randomized to either heparin treatment group(500 IU/kg IV bolus 10 minutes before renal artery occlusion, n=8) or control group(n=7). One side kidney underwent 60 minutes ischemia only by clamping renal pedicle and after that kidney tissue sample was obtained for histologic evaluation. The other side of kidney were permitted 60 minutes ischemia following 60 minutes reperfusion and after that kidney tissue sample was obtained for histologic evaluation. RESULTS: There was significant difference in the degree of congestion(2.6+/-0.2 vs 1.1+/-0.3, P<0.05) between outer medulla of control and heparin treatment group. CONCLUSION: Heparin significantly attenuated outer medullary congestion induced ischemic injury.