Discoloration and radiopacity of white mineral trioxide aggregate with various radiopacifiers / 대한치과재료학회지

The use of the mineral trioxide aggregate (MTA) has been expanded as the material can be applied on various treatment of endodontic care, which also has many advantages including bioactivity. Still, the discolorations of the materials have been presented as a concern related to esthetic appearances, which is caused by the presence of radiopacifiers. Therefore, the aim of this study was to investigate the color stability and radiopacity of white MTA with various radiopacifiers. Four different radiopacifiers [bismuth oxide (BM), calcium tungstate (CT), barium oxide (BO), and zirconium oxide (ZO)] were used. The radiopacity was tested according to ISO 6876, and the color change before and after immersing in a 5% hypochlorite solution was tested using a spectrophotometer. The group with no radiopacifier (NR) was used as a negative control and ProRoot MTA (PR) was used as the commercial control. The immersion of the PR and BM in sodium hypochlorite resulted in a dark brown discoloration, in which the values were higher than the rest of the group (p0.05). In terms of the radiopacity, the NR showed the lowest value as expected (p<0.05). Meanwhile, the BM showed the highest value (p<0.05), followed by PR and BO (p<0.05). The NR showed the lowest radiopacity values. The result of this study will be useful for future development of MTA that would have clinically adequate radiopacity with minimum discoloration.

Erratum to: Prognosis of Patients with Behavioral Variant Frontotemporal Dementia Who have Focal Versus Diffuse Frontal Atrophy

The original version of this article contained wrong information of an author which should be changed.

Prognosis of Patients with Behavioral Variant Frontotemporal Dementia Who have Focal Versus Diffuse Frontal Atrophy

BACKGROUND AND PURPOSE: Only a few studies have investigated the relationship between different subtypes and disease progression or prognosis in patients with behavioral variant frontotemporal dementia (bvFTD). Since a localized injury often produces more focal signs than a diffuse injury, we hypothesized that the clinical characteristics differ between patients with bvFTD who show diffuse frontal lobe atrophy (D-type) on axial magnetic resonance imaging (MRI) scans versus those with focal or circumscribed frontal lobe atrophy (F-type). METHODS: In total, 94 MRI scans (74 scans from bvFTD and 20 scans from age-matched normal controls) were classified into 35 D- and 39 F-type bvFTD cases based on an axial MRI visual rating scale. We compared baseline clinical characteristics, progression in motor and cognitive symptoms, and survival times between D- and F-types. Survival analyses were performed for 62 of the 74 patients. RESULTS: While D-type performed better on neuropsychological tests than F-type at baseline, D-type had higher baseline scores on the Unified Parkinson's Disease Rating Scale (UPDRS) Part III. Evaluations of motor progression showed that the disease duration with motor symptoms was shorter in D-type than F-type. Moreover, the survival time was shorter in D-type (6.9 years) than F-type (9.4 years). Cox regression analyses revealed that a high UPDRS Part III score at baseline contributed to an increased risk of mortality, regardless of the pattern of atrophy. CONCLUSIONS: The prognosis is worse for D-type than for those with F-type. Shorter survival in D-type may be associated with the earlier appearance of motor symptoms.

Transcranial Direct Current Stimulation as an Alternative Treatment in Patients with Alzheimer's Disease

Transcranial direct current stimulation (tDCS) is one of the brain stimulation techniques, which considered as an alternative treatment for Alzheimer's disease (AD). In AD, cognitive, behavior, and functional deteriorations are the result of synaptic dysfunction, neural circuit destabilization, and disrupted network activity, which are mainly caused by amyloid and tau deposition. tDCS modified neuronal resting membrane potential, synaptic plasticity, cortical neurotransmitters, astrocytes, cerebral blood flow, and functional connectivity, which could restore cognitive impairment. However, several small clinical studies that have been conducted so far have produced inconsistent results in patients with AD. Therefore, more systematic clinical studies are needed in the future.

Maternal 3-methylcrotonyl-coenzyme A carboxylase deficiency with elevated 3-hydroxyisovalerylcarnitine in breast milk / 소아과

We report here a case of maternal 3-methylcrotonyl-coenzyme A carboxylase (3-MCC) deficiency in a Korean woman. Her 2 infants had elevated 3-hydroxyisovalerylcarnitine (C5-OH) on a neonatal screening test by liquid chromatography-tandem mass spectrometry (LC-MS/MS), but normal results were found on urine organic acid analysis. The patient was subjected to serial testing and we confirmed a maternal 3-MCC deficiency by blood spot and breast milk spot test by LC-MS/MS, serum amino acid analysis, urine organic acid and molecular genetic analysis that found c.838G>T (p.Asp280Tyr) homozygous mutation within exon 9 of the MCCB gene. Especially, we confirmed marked higher levels of C5-OH on breast milk spot by LC-MS/MS, in the case of maternal 3-MCC deficiency vs. controls.

Effects of pulse pressure alterations on cardiac output measurements derived from analysis of arterial pressure waveform

BACKGROUND: Changes in pulse pressure (PP) may alter the morphology of arterial pressure waveforms, thereby affecting the accuracy of cardiac output (CO) measurements derived from such waveforms. This study evaluated the influence of PP on the accuracy of FloTrac/Vigileo™ system-measured CO (APCO). Pulmonary artery catheter (PAC) measured stat mode CO (SCO) is used as a reference standard. METHODS: Hemodynamic variables were measured at various time points in 24 patients. APCO and SCO were compared using Bland-Altman analysis of the overall data pairs. The data pairs were divided into a low PP group and a high PP group, and subgroup analysis was conducted. RESULTS: The mean APCO (5.3 ± 1.7 L/min) was higher than the mean SCO (5.1 ± 1.6 L/min) for all data pairs (P < 0.001). The Bland-Altman analysis revealed an overall percentage error of 41.7% between the APCO and SCO, which exceeds a 30% limit of agreement. There was a significant relationship between PP and the difference between APCO and SCO (P = 0.031, R = 0.151). In subgroup analysis, APCO and SCO showed reasonable agreement in the low PP group, with a percentage error of 28.2%, but decreased agreement in the high PP group, with a percentage error of 43.2%. CONCLUSIONS: Changes in PP affect the accuracy of APCO measurements. An acceptable level of agreement between APCO and SCO was observed only in a low range of PP.

Undiagnosed Traumatic Tricuspid Regurgitation Identified by Intraoperative Transesophageal Echocardiography

In the critically injuried and hemodynamically unstable patient, extended focused assessment with sonography for trauma (E-FAST) examination can be performed for a rapid assessment of peritoneal and/or pericardial fluid. We report a case of traumatic tricuspid regurgitation that was missed in the emergency department by E-FAST and identified by intraoperative transesophageal echocardiography.

A young child of anti-NMDA receptor encephalitis presenting with epilepsia partialis continua: the first pediatric case in Korea / 소아과

Anti-N-methyl D-aspartate receptor (anti-NMDAR) encephalitis, recently recognized as a form of paraneoplastic encephalitis, is characterized by a prodromal phase of unspecific illness with fever that resembles a viral disease. The prodromal phase is followed by seizures, disturbed consciousness, psychiatric features, prominent abnormal movements, and autonomic imbalance. Here, we report a case of anti-NMDAR encephalitis with initial symptoms of epilepsia partialis continua in the absence of tumor. Briefly, a 3-year-old girl was admitted to the hospital due to right-sided, complex partial seizures without preceding febrile illness. The seizures evolved into epilepsia partialis continua and were accompanied by epileptiform discharges from the left frontal area. Three weeks after admission, the patient's seizures were reduced with antiepileptic drugs; however, she developed sleep disturbances, cognitive decline, noticeable oro-lingual-facial dyskinesia, and choreoathetoid movements. Anti-NMDAR encephalitis was confirmed by positive detection of NMDAR antibodies in the patient's serum and cerebrospinal fluid, and her condition slowly improved with immunoglobulin, methylprednisolone, and rituximab. At present, the patient is no longer taking multiple antiepileptic or antihypertensive drugs. Moreover, the patient showed gradual improvement of motor and cognitive function. This case serves as an example that a diagnosis of anti-NMDAR encephalitis should be considered when children with uncontrolled seizures develop dyskinesias without evidence of malignant tumor. In these cases, aggressive immunotherapies are needed to improve the outcome of anti-NMDAR encephalitis.

An Overview of Carcinogenic Heavy Metal: Molecular Toxicity Mechanism and Prevention

Almost all heavy metals are serious toxicants as carcinogens. However, due to their chemical and physiological properties, heavy metals are useful in industrial areas including alloy, smelting and production of commercial products. Such applications increase the opportunity for heavy metal exposure. Waste from industrial processes is also a major source of environmental contamination and accumulation in the human body. Arsenic, cadmium, chromium, and nickel are classified as group 1 carcinogens by the International Agency for Research on Cancer, and are utilized commercially. In this review, we used molecular pathway analysis to understand the toxicity and carcinogenic mechanisms of these metals. Our analyzed data showed that above-mentioned metallic substances induce oxidative stress, DNA damage, and cell death processes, resulting in increase the risk of cancer and cancer-related diseases. Thus, we might think phytochelatin molecules and antioxidative phytochemical substances are helpful for prevention of heavy metal-induced cancer.

Association between asthma and depression in Korean adults

PURPOSE: Asthma is one of the most common allergic diseases in which depression is an important comorbidity. However, little is known about the prevalence of depression in Korean adult asthmatics. This study was performed to evaluate the association between asthma and depression and to investigate the clinical characteristics of Korean adult asthmatics with depression. METHODS: Data were acquired from 18,066 men and women, aged older than 19 years who participated in the Fifth Korea National Health and Nutrition Examination Surveys, which was conducted from 2010 to 2012. The presence of asthma was based on self-reported physician diagnosis of asthma in the Health Interview Surveys. RESULTS: The prevalence of asthma was 3.2%, and that of depression was 4.2%. In univariate analysis, adults with asthma were old age, marital status, unemployment, low education, low monthly family income, low number of household members, obesity (P<0.05) were significantly associated with asthma, but sex, residence area, and smoking status were not associated with asthma. The prevalence of hypertension and depression were higher in asthmatics (P<0.05), while diabetes mellitus was not associated with asthma. After adjustment for age, marital status, number of household members, monthly family income, body mass index, hypertension, unemployment, low educated status, and depression were associated with the higher prevalence of asthma (P<0.01). Depression was associated with female sex, unemployment, while it was not associated with lung function in asthmatics. CONCLUSION: The results of this study show that depression may be an important risk factor for asthma in Korean adults. Further studies are needed to explore mechanisms responsible for the association between depression and asthma.

Autologous Immunoglobulin Therapy in Patients With Severe Recalcitrant Atopic Dermatitis: A Preliminary Report

The management of severe recalcitrant atopic dermatitis (AD) is a challenging issue for clinicians and patients. We hypothesized that repeated intramuscular injections of autologous immunoglobulin (autologous immunoglobulin therapy: AIGT) might induce clinical improvements in patients with AD by stimulation of the active immune response to antigen-binding-site of pathogenic antibodies. We tried AIGT in 3 adult patients with severe recalcitrant AD whose clinical conditions could not be effectively controlled by medical treatments (including oral cyclosporine) for more than 2 years. Autologous immunoglobulin was purified from the autologous plasma by affinity chromatography using Protein A. The patients were treated by an intramuscular injection of 50 mg of autologous immunoglobulin twice a week for 4 weeks. A clinical severity score of AD (SCORAD value) showed a decrease greater than 30% at 8 weeks after the initiation of AIGT compared with the baseline before the initiation of AIGT in all 3 patients with severe recalcitrant AD. No significant side effects from treatment were observed. Further studies with larger numbers of patients are required to evaluate the clinical usefulness of AIGT for AD.

The Factors Associated with the Decision of r-tPA Use in Acute Ischemic Stroke Patients Aged 80 Years or Older / 대한뇌졸중학회지

BACKGROUND: Small proportions of all the elderly stroke patients receive recombinant tissue plasminogen activator (r-tPA) therapy, although old age is not a proven contraindication to intravenous thrombolytic therapy for acute ischemic stroke. The purpose of this study was to identify reasons for exclusion from r-tPA therapy and factors associated with the decision of r-tPA use in elderly patients with acute ischemic stroke. METHODS: From the acute stroke registries of 22 domestic university hospitals taking the r-tPA therapy from January 2007 to May 2010, we extracted data of all acute ischemic stroke patients who were aged 80 or over and arrived within onset 3 hours. For all patients, we assessed the eligibility of r-tPA therapy using National Institute of Neurological Disorders and Stroke (NINDS) r-tPA trial criteria. For eligible patients, we compared all clinical variables between patients who were treated with r-tPA and those who were not, and analyzed potential factors related to the decision of r-tPA use. RESULTS: A total of 494 patients were included in this study. 255 patients (51.6%) were excluded by NINDS r-tPA trial criteria and the major reasons for exclusion were minor neurological deficit (53.7%) and clinical improvement (17.3%). Among 239 patients who were eligible for r-tPA, 162 (32.8%) patients received r-tPA and 77 (15.6%) did not. Multivariable analysis showed that younger age, shorter time-delay from onset to admission, non-smoker, no history of prior stroke, good pre-stroke functional status and severe initial neurological deficit were independently associated with the decision of r-tPA use in the elderly stroke patients predictors for r-tPA treatment. CONCLUSION: In very elderly patients, mild neurological deficit on arrival and rapid clinical improvement in neurological symptoms were the main reasons for exclusion from thrombolytic therapy.

The Effects of Foot Reflexology on Sleep, Depression and Skin Temperature of the Female Elderly at Home

PURPOSE: The purpose of this study was to examine the effects of foot reflexology on sleep, depression and skin temperature of the female elderly at home. METHODS: This research used the non-equivalent control group pretest-posttest design. The participants were 45 elders residing at home: 23 in the experimental group and 22 in the control group. The experimental group received 30-minute foot reflexology 8 times for 2 weeks. The results were analyzed using chi2 test, t-test with the SPSS/WIN 12.0 program. RESULTS: The results showed that foot reflexology was significantly effective in improving the quality of sleep, reducing depression, and raising the temperature of both feet. However, the temperature of both palms was not statistically significantly different between the two groups. CONCLUSION: The results of this study indicated that foot reflexology is an effective nursing intervention in improving the quality of sleep, reducing depression, and raising the temperature of both feet. Therefore, it is recommended to use foot reflexology as a complementary nursing intervention for elderly women at home in community.

The Effects of Foot Reflexology on Sleep, Depression and Skin Temperature of the Female Elderly at Home

PURPOSE: The purpose of this study was to examine the effects of foot reflexology on sleep, depression and skin temperature of the female elderly at home. METHODS: This research used the non-equivalent control group pretest-posttest design. The participants were 45 elders residing at home: 23 in the experimental group and 22 in the control group. The experimental group received 30-minute foot reflexology 8 times for 2 weeks. The results were analyzed using chi2 test, t-test with the SPSS/WIN 12.0 program. RESULTS: The results showed that foot reflexology was significantly effective in improving the quality of sleep, reducing depression, and raising the temperature of both feet. However, the temperature of both palms was not statistically significantly different between the two groups. CONCLUSION: The results of this study indicated that foot reflexology is an effective nursing intervention in improving the quality of sleep, reducing depression, and raising the temperature of both feet. Therefore, it is recommended to use foot reflexology as a complementary nursing intervention for elderly women at home in community.

Sacral Herpes Simplex Infection Mimicking as Herpes Zoster in the Immune-Competent Patient

No abstract available.

The Effect of Hand Massage on Discomfort in Patients Following Percutaneous Coronary Intervention / 성인간호학회지

PURPOSE: This study assessed the effectiveness of hand massage on reducing discomfort of patients undergoing percutaneous coronary intervention(PCI). METHODS: The sample consisted of 62 patients admitted to an university affiliated hospital. The 30 patients in experimental group received hand massage developed by Snyder(1995) for 5 minutes on both hands and 32 patients in control group received the usual nursing intervention only. The outcome variable of discomfort was measured 10 minutes before and after the hand massage using Questionnaire and VAS. The data were collected from Feb. 5th to May 17th in 2007, and analysed through Chi-square, and t-test with SPSS WIN 12.0. RESULTS: The level of discomfort measured with the questionnaire was decreased in experimental group, but increased in control group. This discomfort changes in two groups were significantly different(t=4.43, p<.001). The level of discomfort measured with VAS was also decreased in experimental group, but increased in control group. The changes were significant, too(t=5.62, p<.001). CONCLUSION: It was clear that hand massage could be a useful nursing intervention in reducing the discomfort of patients undergoing PCI.