Intramuscular Neural Distribution of the Gastrocnemius for Botulinum Neurotoxin Injection:Application to Cosmetic Calf Shaping

Purpose@#Anatomical landmarks can provide vital information on the distribution of nerves in the gastrocnemius muscle. We aimed to provide an anatomical perspective on appropriate locations for botulinum neurotoxin (BoNT) injections in the medial and lateral parts of the gastrocnemius for calf shaping. @*Materials and Methods@#A modified Sihler’s method was applied to both the medial and lateral parts of the gastrocnemius muscles (16 specimens). Intramuscular neural distributions were revealed by dissecting along a transverse line crossing the fibular head and superior margin of the calcaneal tuberosity. @*Results@#The intramuscular neural distribution for the medial and lateral parts of the gastrocnemius had the greatest arborized patterns in the 7/10–8/10 section of the medial head and 7.5/10–8.5/10 section of the lateral part of the gastrocnemius. @*Conclusion@#We propose that BoNT injections should be directed to the 7/10–8/10 section of the medial head and the 7.5/10– 8.5/10 section of the lateral part of the gastrocnemius. Following our guidelines, clinicians can ensure satisfactory results with the use of minimal doses to limit adverse effects, such as gait disturbance, antibody production, and bruising, due to multiple injections. The results can also be altered and applied to electromyography.

Application and Evaluation of the Pilot Program for the Education Nurse System in a Medical Institution / 임상간호연구

Purpose@#This study was conducted to evaluate the performance following the application of the pilot program for the education nurse system of the Ministry of Health and Welfare in a medical institution. @*Methods@#This study was employed a non-homogeneous comparative group design by comparing new nurses who entered the medical institution after the pilot project from December 2019 to April 2020 with new nurses who entered before the pilot project during the same period. Satisfaction, academic achievement, job adaptation, personal turnover within one year, and patient safety incident rate were investigated as performance indicators. @*Results@#After the pilot project, the overall satisfaction among new nurses, preceptors, and fellow nurses increased, but there were no significant changes in academic achievement and job adaptation in new nurses. The personal turnover rate decreased from 15.6% to 9.1%, and the patient safety incident rate also decreased from 26.3% to 15.7%. Also, the preceptor overtime also decreased from 3.67 to 0.66 hours. @*Conclusion@#The performance of the pilot project for the education nurse system was related to improvements in satisfaction, turnover rate of new nurses, patient safety incident rate, and preceptor overtime. Above all long-term monitoring of each performance indicator is necessary through the continuation of the education nurse system of the Ministry of Health and Welfare.

Synergistic Tumoricidal Effects of Alpha-Lipoic Acid and Radiotherapy on Human Breast Cancer Cells via HMGB1 / Journal of the Korean Cancer Association, 대한암학회지

Purpose@#Radiotherapy (RT) is one of main strategies of cancer treatment. However, some cancer cells are resistant to radiation-induced cell death, including apoptosis. Therefore, alternative approaches targeting different anti-tumor mechanisms such as cell senescence are required. This study aimed to investigate the synergistic effect of alpha-lipoic acid (ALA) on radiation-induced cell death and senescence in MDA-MB-231 human breast cancer cells. @*Materials and Methods@#The cells were divided into four groups depending on the cell treatment (control, ALA, RT, and ALA+RT). Cells were analyzed for morphology, apoptotic cell death, mitochondrial reactive oxygen species, membrane potential, cellular senescence, and cell cycle. @*Results@#Our data showed that ALA significantly promoted apoptotic cell death when combined with RT, as reflected by Annexin V staining, expression of apoptosis-related factors, mitochondrial damages as well as cell morphological changes and reduction of cell numbers. In addition, ALA significantly enhanced radiation-induced cellular senescence, which was shown by increased HMGB1 expression in the cytosol fraction compared to the control, increased p53 expression compared to the control, activation of p38 as well as nuclear factor кB, and G2/M cell cycle arrest. @*Conclusion@#The current study is the first report showing a new mode of action (senescence induction) of ALA beyond apoptotic cell death in MDA-MB-231 cancer cells known to be resistant to RT.

Synergistic Tumoricidal Effects of Alpha-Lipoic Acid and Radiotherapy on Human Breast Cancer Cells via HMGB1 / Journal of the Korean Cancer Association, 대한암학회지

Purpose@#Radiotherapy (RT) is one of main strategies of cancer treatment. However, some cancer cells are resistant to radiation-induced cell death, including apoptosis. Therefore, alternative approaches targeting different anti-tumor mechanisms such as cell senescence are required. This study aimed to investigate the synergistic effect of alpha-lipoic acid (ALA) on radiation-induced cell death and senescence in MDA-MB-231 human breast cancer cells. @*Materials and Methods@#The cells were divided into four groups depending on the cell treatment (control, ALA, RT, and ALA+RT). Cells were analyzed for morphology, apoptotic cell death, mitochondrial reactive oxygen species, membrane potential, cellular senescence, and cell cycle. @*Results@#Our data showed that ALA significantly promoted apoptotic cell death when combined with RT, as reflected by Annexin V staining, expression of apoptosis-related factors, mitochondrial damages as well as cell morphological changes and reduction of cell numbers. In addition, ALA significantly enhanced radiation-induced cellular senescence, which was shown by increased HMGB1 expression in the cytosol fraction compared to the control, increased p53 expression compared to the control, activation of p38 as well as nuclear factor кB, and G2/M cell cycle arrest. @*Conclusion@#The current study is the first report showing a new mode of action (senescence induction) of ALA beyond apoptotic cell death in MDA-MB-231 cancer cells known to be resistant to RT.

Nursing Salary Guideline for Korean Hospitals / 임상간호연구

Purpose@#The purpose of this study is to develop a nursing salary guideline for Korean hospitals. @*Methods@#Literature review and a mobile survey were conducted regarding staff nurses’ salary. Regression analysis and simulation model were applied to develop the nurses’ salary guideline. @*Results@#The United Kingdom, Australia, and Germany have standard salary guidelines which demonstrated the standard salary of nurses. These were determined mainly by nursing experience and expertise. The results of the mobile survey indicated that the maximum to minimum ratio of the salary was as high as 4.5 among staff nurses working in Korean hospitals. Two models (exponential and linear) for a standard nursing salary guideline were developed and the simulation results demonstrated an improved salary structure for staff nurses. @*Conclusion@#This developed salary guideline for staff nurses is recommended to be applied in Korean hospitals which provide total nursing care services.

Application of carbon dioxide as a novel approach to eradicate poultry red mites

Poultry red mites (PRMs), Dermanyssus gallinae, are one of the most harmful ectoparasites of laying hens. Because of their public health impact, safe, effective methods to eradicate PRMs are greatly needed. Carbon dioxide (CO2 ) was shown to eradicate phytophagous mites;however, there is no evidence that PRMs can be eradicated by CO2. Thus, the efficacy of CO2, applied by direct-spraying and dry ice-generated exposure, for eradicating PRMs was investigated. Both treatments eradicated > 85% of PRMs within 24 h and 100% of PRMs by 120 h of post-treatment. Therefore, these novel approaches may be useful for eradicating PRMs in clinical settings.

Nurse Wage Structure and Its Determinants in Hospital Industry / 임상간호연구

PURPOSE@#The purpose of this study was to investigate the wage structure of hospital nurses in Korea and to analyze the factors that determine the level of nurses' wages.@*METHODS@#First, a mobile survey on nurses' wages was conducted with a total of 3,742 nurses working in hospitals. A literature review was also done. Second, a regression model was applied to analyze the determinants of nurses' wages.@*RESULTS@#The average monthly wage of 3,742 nurses based on the survey was KRW 3,588,000 and the standardized monthly income of 3,742 nurses was estimated to be KRW 3,364,000 as of the end of 2018. The results of regression analysis(R2=61.7%) showed that gender, nursing experience, designated night duty, ownership, and number of beds were statistically significant variables for nurses' wages at 1% significance level. The monthly wage of nurses working in total nursing care wards was not significantly different from those working in other wards at 5% significance level.@*CONCLUSION@#The substantial difference in nurses' wages according to job career, hospital size, region, etc may result in the low proportion of nurses with more than three to five years of service experience and the high turnover of less-experienced workers. Consideration should be given to adjust the gap in wage level and a standard nurse wage system could be effective measures.

Analysis of vitamin D-binding protein (VDBP) gene polymorphisms in Korean women with and without endometriosis / 대한생식의학회지

OBJECTIVE: Vitamin D-binding protein (VDBP) mediates various biological processes in humans. The goal of this study was to investigate whether VDBP gene polymorphisms could predispose Korean women to endometriosis. METHODS: We prospectively enrolled women with endometriosis (n = 16) and healthy controls (n = 16). Total serum 25-hydroxyl vitamin D (25(OH)D) concentrations were measured using an Elecsys vitamin D total kit. Levels of bioavailable and free 25(OH)D were calculated. Concentrations of VDBP were measured using a vitamin D BP Quantikine ELISA kit. DNA was extracted using a DNeasy blood & tissue kit. Two single-nucleotide polymorphisms (SNPs; rs4588 and rs7041) in GC, the gene that codes for VDBP, were analyzed using a TaqMan SNP genotyping assay kit. The functional variant of VDBP was determined based on the results of the two SNPs. RESULTS: Gravidity and parity were significantly lower in the endometriosis patients than in the control group, but serum CA-125 levels and the erythrocyte sedimentation rate were significantly higher. Total serum 25(OH)D levels in the endometriosis patients were significantly lower than in the control group. However, serum bioavailable 25(OH)D, free 25(OH)D, and VDBP levels did not differ significantly between the endometriosis and control groups. The genotypes and allele frequencies of GC were similar in both groups. CONCLUSION: Korean women with endometriosis had lower total serum 25(OH)D concentrations than controls. Neither serum VDBP concentrations nor polymorphisms in the gene coding for VDBP were associated with endometriosis. Further studies are needed to investigate the pathophysiology and clinical implications of 25(OH)D and VDBP in endometriosis.

Therapeutic effect of ascorbic acid on dapsone-induced methemoglobinemia in rats

OBJECTIVE: Dapsone (diaminodiphenyl sulfone, DDS) is currently used to treat leprosy, malaria, dermatitis herpetiformis, and other diseases. It is also used to treat pneumocystis pneumonia and Toxoplasma gondii infection in HIV-positive patients. The most common adverse effect of DDS is methemoglobinemia from oxidative stress. Ascorbic acid is an antioxidant and reducing agent that scavenges the free radicals produced by oxidative stress. The present study aimed to investigate the effect of ascorbic acid in the treatment of DDS induced methemoglobinemia. METHODS: Male Sprague-Dawley rats were divided into three groups: an ascorbic acid group, a methylene blue (MB) group, and a control group. After DDS (40 mg/kg) treatment via oral gavage, ascorbic acid (15 mg/kg), MB (1 mg/kg), or normal saline were administered via tail vein injection. Depending on the duration of the DDS treatment, blood methemoglobin levels, as well as the nitric oxide levels and catalase activity, were measured at 60, 120, or 180 minutes after DDS administration. RESULTS: Methemoglobin concentrations in the ascorbic acid and MB groups were significantly lower compared to those in the control group across multiple time points. The plasma nitric oxide levels and catalase activity were not different among the groups or time points. CONCLUSION: Intravenous ascorbic acid administration is effective in treating DDS-induced methemoglobinemia in a murine model.

Heterogeneous Nuclear Ribonucleoprotein A2B1 Exerts a Regulatory Role in Lipopolysaccharide-stimulated 38B9 B Cell Activation

Major histocompatibility complex (MHC) class II molecules, which are recognized for their primary function of presenting an antigen to the T cell receptor, are involved in various signaling pathways in B cell activation. We identified heterogeneous nuclear ribonucleoprotein (hnRNP) A2B1 as an MHC class II molecule-associated protein involved in MHC class II-mediated signal transduction in lipopolysaccharide (LPS)-stimulated 38B9 B cells. Although the function of hnRNP A2B1 in the nucleus is primarily known, the level of hnRNP A2B1 in the cytoplasm was increased in LPS-stimulated 38B9 cells, while it was not detected in the cytoplasm of non-treated 38B9 cells. The silencing of hnRNP A2B1 expression using siRNA disturbed B cell maturation by regulation of mitogen-activated protein kinase signaling, NF-κB activation, and protein kinase B activation. These results suggest that hnRNP A2B1 is associated with MHC class II molecules and is involved in B cell activation signaling pathways in LPS-stimulated 38B9 cells.

Comparison of Epidemiology and Outcomes of Patients with Intentional Poisoning by Age Groups: Single Center Observation Study

PURPOSE: This study was conducted to compare demographic and characteristic differences in self-poisoned patients by age groups using a comprehensive trauma database. METHODS: This study included 1,823 patients who were admitted to the emergency room following self-poisoning. Three age groups were defined: young patients (less than 19 years), adult patients (19 to 64 years) and elderly patients (65 years and old). From January 2011 to December 2015, data were obtained from in a single emergency medical center. We investigated the materials of poisoning, ingestion time, GCS, systolic blood pressure, heart rate, and outcomes of patients. RESULTS: A total of 1,823 self-poisoned patients visited the hospital during 5 years. Among these, 130 (7.1%) were categorized as young, 1,460 (80.1%) were adults and 233 (12.8%) were elderly. The most common drug of self-poisoning substances was antipyretics (50.0%) for those in the young group, sedative drugs (45.0%) for adults, and pesticides (41.2%) for the elderly. Mortality was 2.7% in the adult group and 14.6% in the elderly group. After adjusting for all factors related to mortality, the odds ratio (OR) of mortality was 2.63 in the elderly group (95% confidence interval [CI]: 1.44-4.81). CONCLUSION: There were definite differences in the characteristics of three groups. The younger patients used drugs that could be easily obtained while older patients used more lethal drugs.

A Case of Multiple Complications in Herpes Zoster Ophthalmicus

PURPOSE: We report a case of stromal keratitis, corneal infiltration, anterior uveitis, central retinal artery occlusion and optic neuropathy in a patient with herpes zoster ophthalmicus. CASE SUMMARY: A 73-year-old man who was hospitalized for pain and vesicles on his left face was referred to our clinic with sudden onset visual disturbance in his left eye. His best corrected visual acuity in the right eye was 0.8 and light-perception in his left eye. Relative afferent pupillary defect was found in his left eye. Slit-lamp examination showed anterior uveitis secondary to herpes zoster ophthalmicus presented with stromal keratitis. Fundus examination showed retinal hemorrhage, vitreous opacity, cherry-red spot in the fovea and optic disc swelling. Delayed arterial filling and arteriovenous transit time were observed on fluorescence angiography. He was treated with topical antiviral and steroid eye drops for stromal keratitis and anterior uveitis. He was also treated systemically with an intravenous antiviral agent and oral steroid, but visual acuity did not improve. CONCLUSIONS: Stromal keratitis, corneal opacity, anterior uveitis, central retinal artery occlusion and optic neuropathy can be complications of herpes zoster ophthalmicus.

Recurrent Transient Global Amnesia in a Hot and Humid Machinery Room

Transient global amnesia (TGA) is characterized by abrupt onset temporary dysfunction of anterograde and retrograde amnesia without other neurologic deficits. We encountered a 53-year-old man who developed recurrent TGA while working in a hot and humid machinery room (33degrees C and 64% relative humidity). Heat exposure and physical exertion may facilitate the leakage of cytokines into the systemic circulation so as to cause a cerebral endothelial insult. Functional insufficiency of the hippocampus and its connections caused by physical and environmental factors may be related to recurrent attacks.

Short-Term Effect of Percutaneous Bipolar Continuous Radiofrequency on Sacral Nerves in Patients Treated for Neurogenic Detrusor Overactivity After Spinal Cord Injury: A Randomized Controlled Feasibility Study

OBJECTIVE: To investigate the short-term effects of bipolar radiofrequency applied to sacral nerves to treat neurogenic detrusor overactivity in patients with spinal cord injury. METHODS: Ten patients with spinal cord injury with neurogenic detrusor overactivity were recruited. These subjects were randomized to two groups: intervention (n=5) and control (n=5), members of which received conventional treatment. Voiding diary, International Consultation on Incontinence Questionnaire (ICIQ) and the urinary incontinence quality of life scale (IQOL) data were obtained and an urodynamic study (UDS) was performed before and after intervention. In the intervention group, percutaneous bipolar continuous radiofrequency (CRF) was performed on both the S2 and S3 nerves in each patient. RESULTS: In a comparison of daily frequency and number of urinary incontinence and ICIQ and IQOL scores at baseline and at 1 and 3 months after intervention, all variables achieved a significant effect for time (p0.05). CONCLUSION: Percutaneous bipolar CRF applied to sacral nerves might be an effective therapy for neurogenic overactive bladder that reduces urinary incontinence and improves quality of life.

Analysis of Clinical Feature and Management of Fish Bone Ingestion of Upper Gastrointestinal Tract

OBJECTIVES: Fish bone impaction in the upper gastrointestinal tract is a common reason for patients to seek emergent care. The aim of this study was to find a clinical characteristics of patients with fish bone impaction in the upper gastrointestinal tract. METHODS: The study was conducted on 286 fish bone ingestion patients who complained of dysphagia and irritation after eating fish. The patients were treated according to the hospital protocol regarding the removal of fish bone. The parameters for the analysis included the age and sex of the patients, location and characteristics of the foreign body, method of removal, and type of fish. RESULTS: The fish bone could be observed by the physical examination in the oral cavity and laryngopharynx in 198 patients (69.23%). For those patients in whom the foreign body could not be observed in oral cavity and laryngopharynx, noncontrast computed tomography (CT) (from nasopharynx to diaphragm) was performed. The fish bone was discovered in the esophagus of 66 patients (23.08%). The esophageal fish bone was successfully removed by transnasal flexible esophagoscopy (TNE) in 55 patients, the fish bone moved to the stomach in 10 patients and one fish bone was removed by rigid esophagoscopy due to esophageal abscess. The esophageal fish bone was mostly found in patients aged 50 years and older. CONCLUSION: Fish bone foreign body ingestion in the esophagus appeared to be more common in older patients. Incorporating noncontrast CT and TNE can facilitate decision-making and adequate treatment for patients with fish bone impactions.

COMP-Ang1 Potentiates EPC Treatment of Ischemic Brain Injury by Enhancing Angiogenesis Through Activating AKT-mTOR Pathway and Promoting Vascular Migration Through Activating Tie2-FAK Pathway

Successful recovery from brain ischemia is limited due to poor vascularization surrounding the ischemic zone. Cell therapy with strong angiogenic factors could be an effective strategy to rescue the ischemic brain. We investigated whether cartilage oligomeric matrix protein (COMP)-Ang1, a soluble, stable and potent Ang1 variant, enhances the angiogenesis of human cord blood derived endothelial progenitor cells (hCB-EPCs) for rescuing brain from ischemic injury. COMP-Ang1 markedly improved the tube formation of capillaries by EPCs and incorporation of EPCs into tube formation with human umbilical vein endothelial cells (HUVECs) upon incubation on matrigel in vitro. COMP-Ang1 stimulated the migration of EPCs more than HUVECs in a scratch wound migration assay. The transplanted EPCs and COMP-Ang1 were incorporated into the blood vessels and decreased the infarct volume in the rat ischemic brain. Molecular studies revealed that COMP-Ang1 induced an interaction between Tie2 and FAK, but AKT was separated from the Tie2-FAK-AKT complex in the EPC plasma membrane. Tie2-FAK increased pp38, pSAPK/JNK, and pERK-mediated MAPK activation and interacted with integrins alphanubeta3, alpha4, beta1, finally leading to migration of EPCs. AKT recruited mTOR, SDF-1, and HIF-1alpha to induce angiogenesis. Taken together, it is concluded that COMP-Ang1 potentiates the angiogenesis of EPCs and enhances the vascular morphogenesis indicating that combination of EPCs with COMP-Ang1 may be a potentially effective regimen for ischemic brain injury salvage therapy.

Localized Mesenteric Vasculitis in a Patient with Polymyalgia Rheumatica

Polymyalgia rheumatica (PMR) is an uncommon disorder characterized by bilateral pain and stiffness in the shoulder and pelvic girdles. Polymyalgia rheumatica and giant cell arteritis (GCA) occur in the same patient population and share a common pathogenesis. Giant cell arteritis predominantly affects the cranial arteries and rarely involves the gastrointestinal tract. Moreover, giant cell arteritis has rarely been reported in Asians. Here, we present a case with 62-year-old Asian woman who developed polymyalgia rheumatica with localized vasculitis in the mesenteric arteries.

Effectiveness of Community-based Case Management for Patients with Hypertension

PURPOSE: The purpose of this study was to evaluate the effectiveness of case management for patients with hypertension on their health status and medical service utilization. METHODS: This study was a secondary analysis of data collected for a larger study of chronic disease management in 2008 using the National Health Insurance Corporation database. A total of 12,944 patients who received case management for hypertension were included in this analysis. The subjects of case management were classified into subgroups, namely, over-use, under-use, and non-use groups according to the amount of medical service utilization. To compare the medical service utilization, a control group was selected randomly. The data were analyzed through descriptive statistics, McNemar test, and ANOVA. RESULTS: All the subgroups displayed significant differences in blood pressure, self-management, social support, and their characteristics of medical service utilization. The total medical expense of the under-use and non-use groups increased after case management. However, there was no decrease in the medical expense of the over-use group. CONCLUSION: This finding suggests that there is a need to re-examine why patients overuse medical services and to supplement specific strategies for encouraging appropriate medical service utilization, and enhancing case management efforts for the over-use group.

Development and Effect of a Metabolic Syndrome Prevention Program for University Students using Mobile Application

PURPOSE: The purpose of the study was to develop and evaluate the effect of a metabolic syndrome prevention program using mobile application for university students. METHODS: A pretest-posttest design with content analysis as a triangulation method was used. The participants were 49 university students. Data were analyzed using descriptive statistics, chi2-test, t-test and Fisher's exact test with the SPSS WIN 18.0 program. RESULTS: The application consisted of six main menus as follows: 'basic education', 'nutrition education', 'exercise education', 'meal diary', 'exercise checkup', and 'tips'. The experimental group had higher recognition about metabolic syndrome prevention than the control group (F=7.919, p=.007). Understanding of metabolic syndrome among participants was mostly related to chronic diseases such as obesity, hypertension and diabetes in relation to the importance of eating habits and exercising. CONCLUSION: The results indicate that metabolic syndrome prevention education using mobile application is necessary and would be useful for university students.

Osteonecrosis of the Humeral Head after Cerebral Angiography

A 79-year-old woman was admitted to our hospital for shoulder pain. A physical examination revealed a tender right shoulder with limitation of active, and preservation of passive, motion. She had undergone a cerebral angiography with coil embolization two months prior to admission. After the procedure, she was presented with pain in the right upper arm and shoulder. Due to persistent shoulder pain, an MRI of the shoulder was performed, and osteonecrosis of the humeral head was detected. We present a case of osteonecrosis of the humeral head after cerebral angiography.