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Find video protocols related to scientific articles indexed in Pubmed.
Transformation of a layered perovskite to a defect perovskite via cooperative Li-insertion and O/N substitution.
Dalton Trans
PUBLISHED: 10-09-2014
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Defect perovskite oxynitrides containing lithium on the octahedral sites, i.e., Sr1-x(LixTa1-x)(O3.5-3x-3yN2y), were produced by the ammonolytic heating of a layered perovskite, Sr2Ta2O7, with Li2CO3. The above phase evolution involved the thermal diffusion of Li(+) into the Sr2Ta2O7 lattice and concurrent 3O(2-) ? 2N(3-) substitution. The concentrations of Li, N, and anion vacancies in the product oxynitride could be controlled by adjusting the Li2CO3 to Sr2Ta2O7 ratio in the reactant mixture. This study identified three different compositions, Sr0.92Li0.08Ta0.92O1.91N0.89, Sr0.83Li0.17Ta0.83O1.88N0.74 and Sr0.73Li0.27Ta0.73O1.82N0.58, where an increase in the Li composition accompanied decreases in the a- and c-parameters of the tetragonal cell, along with an increase in the band gap. Neutron diffraction and solid state (7)Li nuclear magnetic resonance spectroscopy of Sr1-x(LixTa1-x)(O3.5-3x-3yN2y) showed that Li occupied the octahedral site, and these oxynitrides exhibited enhanced bond covalency compared to similar oxides.
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Compartment syndrome following total knee arthroplasty: clinical results of late fasciotomy.
Knee Surg Relat Res
PUBLISHED: 08-29-2014
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Compartment syndrome after total knee arthroplasty (TKA) is a rare complication. Because of its rarity, it may be overlooked and misdiagnosed as peroneal nerve palsy or deep vein thrombosis. This misdiagnosis could have a profound impact on the patient's outcome. We report a case of a 77-year-old female who developed unilateral compartment syndrome in the calf after staged bilateral TKA at an outside clinic. The patient presented with medical complications related to compartment syndrome: rhabdomyolysis and myoglobinuria, which caused acute renal failure. Thus, we performed late fasciotomy one week after symptom onset to debride necrotic tissue and salvage the compartment. In the discussion section, we will discuss risk factors for compartment syndrome after TKA, results of late fasciotomy and other indications for surgical treatment of compartment syndrome.
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Clinicopathologic differences between prostate cancers detected during initial and repeat transrectal ultrasound-guided biopsy in Korea.
Korean J Urol
PUBLISHED: 08-04-2014
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The aim of this study was to investigate clinicopathologic differences between prostate cancer (PCa) detected at initial and repeat transrectal ultrasound-guided prostate biopsy in a large Korean cohort.
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Aptamer biosensors for label-free colorimetric detection of human IgE based on polydiacetylene (PDA) supramolecules.
J Nanosci Nanotechnol
PUBLISHED: 07-26-2011
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In this study, we demonstrate an aptamer-based biosensor (apta-biosensor) using PDA liposomes for label-free detection of allergy diagnosis by hIgE detection. In order to detect the target hIgE, the surface of PDA liposome were functionalized with hIgE antibody and anti-hIgE aptamer as a receptor, and the target hIgE onto the receptors was detected by the change of fluorescence signal. The hIgE antibody-modified PDA liposome biosensor had a serious problem that the immune reaction between receptor and target could not powerfully affect the change of florescence signal on PDA liposome. In order to solve this problem, the anti-hIgE aptamer which was far smaller than whole antibody was introduced as the receptor for the PDA liposome system. An aptamer-based PDA liposome biosensor was able to measure a quantity of target protein with various concentrations and at this time the detection limit was 141 ng/mL of the hIgE concentration. These results enabled diagnosis of allergy disease by an aptamer-based PDA liposome biosensor because real allergic patients showed high concentration of hIgE in serum (greater than 290 ng/mL). Therefore, we suggest that aptamer-modified PDA supramolecules as promising candidates for development of label-free colorimetric biosensors.
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Twenty-year survival analysis in total knee arthroplasty by a single surgeon.
J Arthroplasty
PUBLISHED: 04-17-2011
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Between January 1988 and December 2006, a total of 3014 primary total knee arthroplasties (TKAs) in 2042 patients were performed, and survivorship analysis was performed. Survivorship analysis showed a 10-year survival of 93.8% and a 20-year survival of 70.9%. There was no significant difference in the survival rate according to sex and diagnosis (P = .142 and .443, respectively). The survival rate was higher in the patients older than 60 years (P < .001). The survival rate of Total Condylar IV (TC-IV) was higher than that of Ortholoc (Dow Corning Wright Medical, Arlington, Tenn) (P < .001). Total knee arthroplasty results in satisfactory long-term survival rates. However, the survival rate decreases over time. The risk of requiring revision TKA was related to age and type of implants. Careful consideration is necessary to decide the time for TKA and select type of implants.
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[Guidelines for the treatment of irritable bowel syndrome].
Korean J Gastroenterol
PUBLISHED: 02-26-2011
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Traditional symptom-based therapies of irritable bowel syndrome (IBS) are directed at the relief of individual IBS symptoms, but they are often of limited efficacy in addressing the entire symptom complex. Combinations of drugs to target bothersome symptoms are suggested as the first-line pharmacologic treatment. Increasing knowledge of the pathophysiology and molecular mechanisms of IBS has resulted in the development of several new therapeutic approaches. Thirteen consensus statements for the treatment of IBS were developed using the modified Delphi approach. Exclusion diets have modest efficacy in improving symptoms in some IBS patients. Symptom-based therapies with dietary fiber, bulking agents, laxatives, antispasmodics and laxatives are effective in the improvement of some individual symptoms, e.g. dietary fiber and bulking agents for constipation, laxatives for constipation, antispasmodics for abdominal pain and discomfort, antidiarrheals for diarrhea. 5HT3 receptor antagonists and 5HT((4)) receptor agonists are effective in the relief of global IBS symptoms and individual symptoms such as abdominal pain and abnormal bowel habits. A short term course of nonabsorbable antibiotics may improve global IBS symptoms, particularly in patients with diarrhea- predominant IBS. Some probiotics appear to have the potential benefit in improving global IBS symptoms. Selective C-2 chloride channel activator is more effective than placebo at relieving global IBS symptoms in patients with constipation-predominant IBS. Both tricyclic antidepressants and selective serotonin reuptake inhibitors are equally effective in relieving global IBS symptoms, and have some benefits in treating abdominal pain. Certain types of psychologic therapy may be effective in improving global symptoms in some IBS patients. Further studies are strongly needed to develop better treatment strategies for Korean patients with IBS.
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Nafamostat mesilate for prevention of post-endoscopic retrograde cholangiopancreatography pancreatitis: a prospective, randomized, double-blind, controlled trial.
Pancreas
PUBLISHED: 01-06-2011
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Pancreatitis is the most common major complication of endoscopic retrograde cholangiopancreatography (ERCP). Efforts have been made to identify pharmacologic agents capable of reducing its incidence and severity. The aim of this trial was to determine whether prophylactic nafamostat mesilate, a synthetic protease inhibitor, would reduce the frequency and severity of post-ERCP pancreatitis.
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[Gastritis cystica profunda accompanied by multiple early gastric cancers].
Korean J Gastroenterol
PUBLISHED: 08-11-2010
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Gastritis cystica profunda (GCP) is a rare disease which shows multiple cystic gastric glands within the submucosa of the stomach. GCP lesions mainly develop at the site of gastroenterostomy and exhibit benign behavior. However, there have been a number of debates over its malignant potential. Several reports have documented GCP accompanied by gastric carcinomas, but the relationship between the two conditions remains uncertain. Here we report two cases of GCP with dysplasia accompanied by synchronous multiple early gastric cancers without previous gastric surgery.
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Capsule endoscopy in small bowel tumors: a multicenter Korean study.
J. Gastroenterol. Hepatol.
PUBLISHED: 07-03-2010
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Capsule endoscopy (CE) has proven to be highly effective at detecting small bowel lesions in a variety of clinical conditions, but studies concerning the practical impact of CE on small bowel tumors are still scarce, especially in the Asian population. The aim of this study was to evaluate the diagnostic and therapeutic impact of CE in the field of small bowel tumors.
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[Validity and reliability of the nonalcoholic fatty liver diseases activity score (NAS) in Korean NAFLD patients and its correlation with clinical factors].
Korean J Hepatol
PUBLISHED: 04-09-2010
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Nonalcoholic steatohepatitis (NASH) is commonly diagnosed using the semi-quantitative grading and staging system proposed by Brunt et al. in 1999. The Pathology Committee of the NASH established the nonalcoholic fatty liver diseases (NAFLD) activity score (NAS) in 2005. The aim of this study was to elucidate the validity and reliability of the NAS in Korean NAFLD patients.
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Inter-observer agreement on the interpretation of capsule endoscopy findings based on capsule endoscopy structured terminology: a multicenter study by the Korean Gut Image Study Group.
Scand. J. Gastroenterol.
PUBLISHED: 02-13-2010
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Capsule endoscopy (CE) is a novel investigation for the diagnosis of small-bowel disease but its interpretation is highly subjective. We studied the inter-observer agreement and accuracy of the interpretation of CE findings based on capsule endoscopy structured terminology (CEST).
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Patient factors predictive of inadequate bowel preparation using polyethylene glycol: a prospective study in Korea.
J. Clin. Gastroenterol.
PUBLISHED: 09-11-2009
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Inadequate bowel preparation is important because it can result in missed lesions, cancelled procedures, increased procedural time, and a potential increase in complication rates. This prospective study was designed to look at the quality of colon preparation using polyethylene glycol solution and evaluate potential associations between specific patient characteristics and inadequate bowel preparation.
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Facile synthesis and size control of spherical aggregates composed of Cu(2)O nanoparticles.
J Colloid Interface Sci
PUBLISHED: 05-22-2009
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The secondary structures of Cu(2)O nanoparticles were prepared in aqueous solution utilizing self-assembled aggregation process. By introducing polyacrylamide (PAM) as a secondary surfactant, the colloidal nanoparticle aggregates (CNAs) become uniform in size and exhibit spherical shape compared to the random aggregates without PAM. The size of CNA can be systematically controlled from 300nm to 1000nm by varying PAM concentration. The formation mechanism was explained based on a conventional colloidal particle formation mechanism. These control methods may generally be applied to the preparation of secondary nanoparticle structures.
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Acute pancreatitis complicating spontaneous acute exacerbation of chronic hepatitis B virus infection: case report and review of the literature.
Gut Liver
PUBLISHED: 03-31-2009
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Acute pancreatitis may complicate viral hepatitis B, as well as the other causes of viral hepatitis. There have been reports of acute pancreatitis complicating acute exacerbations of chronic hepatitis B virus infection, most of which were related to immunosuppressive treatment or organ transplantation. However, acute pancreatitis complicating spontaneous acute exacerbation of chronic hepatitis B virus infection is rare. We report a case of acute pancreatitis that developed while a spontaneous acute exacerbation of chronic hepatitis B virus infection was underway in a healthy carrier.
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Comparison of the Eradication Rate between 1- and 2-Week Bismuth-Containing Quadruple Rescue Therapies for Helicobacter pylori Eradication.
Gut Liver
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First-line therapies against Helicobacter pylori, including proton pump inhibitors (PPIs) plus two antibiotics, may fail in up to 20% of patients. Rescue therapy is usually needed for patients who failed the first-line treatment. This study evaluated the eradication rate of bismuth-containing quadruple rescue therapy over a 1- or 2-week period.
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Prevalence of minimal change lesions in patients with non-erosive reflux disease: a case-control study.
Digestion
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Some minimal changes (MCs) are believed to have a certain relationship with gastroesophageal reflux (GERD). Nonetheless, the individual meaning of MC is still unclear. Our aim was to compare the overall and individual prevalence of MC between patients with non-erosive reflux disease (NERD) and healthy controls (HC).
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[A case of multiple gastrointestinal stromal tumor of the jejunum which was diagnosed by capsule endoscopy].
Korean J Gastroenterol
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More than 90% cases of chronic gastrointestinal bleeding can be diagnosed by upper endoscopy and/or colonoscopy, and therefore, obscure gastrointestinal bleeding has been defined as bleeding of unknown origin that persists after these conventional endoscopic evaluation. Gastrointestinal stromal tumors (GISTs) are rare tumors, but the most common form of mesenchymal tumors of the gastrointestinal tract. Small bowel is the second most common primary site for GISTs, and accounts for 2-10% of chronic bleeding sites. GISTs usually present as a sporadic and solitary tumor, and a minority of the cases of multiple GISTs are discovered as forms of hereditary or idiopathic tumor syndromes. Small bowel tumor has been difficult to diagnose because of absence of accurate and proper diagnostic tools. Recently developed wireless capsule endoscopy helps in the diagnostic work-up of small bowel diseases. We report a case of multiple jejunal GISTs presenting melena in a 39-year-old male, which was diagnosed with wireless capsule endoscopy.
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Can rebamipide and proton pump inhibitor combination therapy promote the healing of endoscopic submucosal dissection-induced ulcers? A randomized, prospective, multicenter study.
Gastrointest. Endosc.
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There has been no consensus regarding the optimal treatment durations and drug regimens in patients with endoscopic submucosal dissection (ESD)-induced ulcers.
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What is Visualize?

JoVE Visualize is a tool created to match the last 5 years of PubMed publications to methods in JoVE's video library.

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We use abstracts found on PubMed and match them to JoVE videos to create a list of 10 to 30 related methods videos.

Video X seems to be unrelated to Abstract Y...

In developing our video relationships, we compare around 5 million PubMed articles to our library of over 4,500 methods videos. In some cases the language used in the PubMed abstracts makes matching that content to a JoVE video difficult. In other cases, there happens not to be any content in our video library that is relevant to the topic of a given abstract. In these cases, our algorithms are trying their best to display videos with relevant content, which can sometimes result in matched videos with only a slight relation.