Effects of Parental Verbal Abuse Experience on the Glutamate Response to Swear Words in the Ventromedial Prefrontal Cortex:A Functional 1 H-magnetic Resonance Spectroscopy Study

Objective@#Several lines of evidence indicate verbal abuse (VA) critically impacts the developing brain; however, whether VA results in changes in brain neurochemistry has not been established. Here, we hypothesized that exposure to recurrent parental VA elicits heightened glutamate (Glu) responses during the presentation of swear words, which can be measured with functional magnetic resonance spectroscopy (fMRS). @*Methods@#During an emotional Stroop task consisting of blocks of color and swear words, metabolite concentration changes were measured in the ventromedial prefrontal cortex (vmPFC) and the left amygdalohippocampal region (AMHC) of healthy adults (14 F/27 M, 23 ± 4 years old) using fMRS. The dynamic changes in Glu and their associations with the emotional state of the participants were finally evaluated based on 36 datasets from the vmPFC and 30 from the AMHC. @*Results@#A repeated-measures analysis of covariance revealed a modest effect of parental VA severity on Glu changes in the vmPFC. The total score on the Verbal Abuse Questionnaire by parents (pVAQ) was associated with the Glu response to swear words (ΔGluSwe ). The interaction term of ΔGluSwe and baseline N-acetyl aspartate (NAA) level in the vmPFC could be used to predict state-trait anxiety level and depressive mood. We could not find any significant associations between ΔGluSwe in the AMHC and either pVAQ or emotional states. @*Conclusion@#Parental VA exposure in individuals is associated with a greater Glu response towards VA-related stimuli in the vmPFC and that the accompanying low NAA level may be associated with anxiety level or depressive mood.

Early and Atypical Radiologic Presentations of Pulmonary Langerhans Cell Histiocytosis:A Report of Two Cases

Pulmonary Langerhans cell histiocytosis (PLCH) is a rare, multi-systemic disease primarily affecting young male adults with a history of smoking. The two patients with PLCH in our report showed relatively early and atypical radiologic presentations at initial evaluation. On chest CT, PLCH presents variable radiologic features depending on the evolutional stage of the disease. Atypical CT features of PLCH may render precise radiologic diagnosis difficult and usually require lung biopsy for a confirmation of the diagnosis. Our case review is aimed at raising the awareness of radiologists on the atypical CT features of PLCH, to help make accurate radiologic diagnosis and prevent unnecessary and invasive diagnostic procedures.

Early and Atypical Radiologic Presentations of Pulmonary Langerhans Cell Histiocytosis:A Report of Two Cases

Pulmonary Langerhans cell histiocytosis (PLCH) is a rare, multi-systemic disease primarily affecting young male adults with a history of smoking. The two patients with PLCH in our report showed relatively early and atypical radiologic presentations at initial evaluation. On chest CT, PLCH presents variable radiologic features depending on the evolutional stage of the disease. Atypical CT features of PLCH may render precise radiologic diagnosis difficult and usually require lung biopsy for a confirmation of the diagnosis. Our case review is aimed at raising the awareness of radiologists on the atypical CT features of PLCH, to help make accurate radiologic diagnosis and prevent unnecessary and invasive diagnostic procedures.

Role and Prognosis of Extracorporeal Life Support in Patients Who Develop Cardiac Arrest during or after Office-Based Cosmetic Surgery

Background@#Cardiac arrest during or after office-based cosmetic surgery is rare, and little is known about its prognosis. We assessed the clinical outcomes of patients who developed cardiac arrest during or after cosmetic surgery at office-based clinics. @*Methods@#Between May 2009 and May 2016, 32 patients who developed cardiac arrest during or after treatment at cosmetic surgery clinics were consecutively enrolled. We compared clinical outcomes, including complications, between survivors (n=19) and non-survivors (n=13) and attempted to determine the prognostic factors of mortality. @*Results@#All 32 of the patients were female, with a mean age of 30.40±11.87 years. Of the 32 patients, 13 (41%) died. Extracorporeal life support (ECLS) was applied in a greater percentage of non-survivors than survivors (92.3% vs. 47.4%, respectively; p=0.009). The mean duration of in-hospital cardiopulmonary resuscitation (CPR) was longer for the non-survivors than the survivors (31.55±33 minutes vs. 7.59±9.07 minutes, respectively; p=0.01).The mean Acute Physiology and Chronic Health Evaluation score was also higher among non-survivors than survivors (23.85±6.68 vs. 16.79±7.44, respectively; p=0.01). No predictor of death was identified in the patients for whom ECLS was applied. Of the 19 survivors, 10 (52.6%) had hypoxic brain damage, and 1 (5.3%) had permanent lower leg ischemia.Logistic regression analyses revealed that the estimated glomerular filtration rate was a predictor of mortality. @*Conclusion@#Patients who developed cardiac arrest during or after cosmetic surgery at office-based clinics experienced poor prognoses, even though ECLS was applied in most cases. The survivors suffered serious complications. Careful monitoring of subjects and active CPR (when necessary) in cosmetic surgery clinics may be essential.

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.

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.

Survey on the Education System for New Graduate Nurses in Hospitals: Focusing on the Preceptorship / 의학교육논단

The purpose of this study was to identify the current status of the new graduate nurses' education system, to establish guidelines for the education of new graduate nurses, and to provide dates for the improvement of the education system. Eighty-nine hospitals participated in the survey from July to August 2018. The questionnaires consisted of 24 items including general characteristics, new graduate nurses' education system, operation of nursing education teams, and preceptorship programs. The average duration of education/training for new graduate nurses was 57.3 days, and 26.6%–58.5% of general hospitals, hospitals, and long-term care hospitals had less than 30 days of new graduate nurses education/training, which is shorter than the education/training period of tertiary hospitals. There were new nursing education guidelines in 88.8% of all medical institutions and 58.6% of them had nursing education teams. Most of the personnel in charge of nursing education were not dedicated to education. A total of 87.6% of the all participating medical institutions had preceptorship programs, while 23.1%–33.3% of hospitals and long-term care hospitals did not. The breakdown of preceptorship programs showed 68.4% as “preceptor and preceptee are in charge of one team, and preceptor is teaching preceptee,” and 19.7% were “preceptor and preceptee are in charge of each team, and preceptor is teaching preceptee at the same time.” These results show that standardization and management of new graduate nurses' education programs is necessary. For the standardization and management of new graduate nurses' education programs, joint efforts of nurses' associations and support from the government should be encouraged.

Comparison of the Bupropion versus Aripiprazole Adjunctive Therapy for the Treatment of Female Depression : Post-Hoc Analyses from a Randomized Prospective Open-Label Multi-Center Study / 우울ㆍ조울병

OBJECTIVES: The purpose of this study was to examine effects of adjunctive aripiprazole versus bupropion, on depressive symptoms of female depression.METHODS: Sixty six female patients with major depressive disorders were enrolled from a six-week, randomized prospective open-label multi-center study. Participants were randomized to receive aripiprazole (2.5–10 mg/day) or bupropion (150–300 mg/day). Montgomery Asberg Depression Rating Scale, 17-item Hamilton Depression Rating scale (HAM-D17), Iowa Fatigue Scale, Drug-Induced Extrapyramidal Symptoms Scale, Psychotropic-Related Sexual Dysfunction Questionnaire scores, and Clinical Global Impression-Severity (CGI-S) were obtained at baseline and after one, two, four, and six weeks. Changes on individual items of HAM-D17 were assessed as well as on composite scales (anxiety, insomnia and drive), and on four core subscales that capture core depression symptoms.RESULTS: Overall, both treatments improved depressive symptoms, without causing serious adverse events. There were significant differences in the HAM-D17 total score (p=0.046) and CGI-S (p=0.004), between aripiprazole and bupropion augmentation, favoring aripiprazole over bupropion. Aripiprazole revealed significantly greater effect size in depressed mood (p=0.006), retardation (p=0.005), anxiety psychic (p=0.032), and general somatic symptom (p=0.01).CONCLUSION: While both treatments were effective, results of this study suggested that aripiprazole may be preferable, in treating general and core symptoms of female depression.

Efficacy of horse chestnut leaf extract ALH-L1005 as a matrix metalloproteinase inhibitor in ligature-induced periodontitis in canine model

Matrix metalloproteinases (MMPs) are the main proteinases associated with periodontal tissue destruction and remodeling. Therefore, inhibition of host-derived MMPs has a key role in the prevention and reduction of periodontitis progression. Horse chestnut (Aesculus hippocastanum L.) extracts have been used as treatments for inflammatory disease, traditionally. This study assessed the clinical effect as a MMP inhibitor of horse chestnut leaf extract ALH-L1005 on periodontitis. ALH-L1005 was obtained from horse chestnut leaf and its MMP inhibitory activities estimated. Periodontitis was induced in beagles assigned to 4 groups and medicated for 6 weeks: low dose test (LT; ALH-L1005, 100 mg/kg/day), high dose test (HT; ALH-L1005, 200 mg/kg/day), positive control (PC; doxycycline, 10 mg/kg/day), or negative control (NC; placebo). Before and after administration, clinical indices of the teeth and MMP quantity in gingival tissues using zymography were measured. Clinical conditions of the LT, HT, and PC groups were significantly improved after 6 weeks. In zymographic evaluations, gelatinolytic and caseinolytic activities were suppressed in LT, HT, and PC groups but not in the NC group. The results suggest that ALH-L1005 could be an effective agent for clinical prevention and treatment of periodontitis by inhibiting the gelatinase and collagenase activities, which can detach periodontal ligaments from alveolar bone.

Air assisted lamellar keratectomy for the corneal haze model

To standardize the corneal haze model in the resection depth and size for efficient corneal haze development, air assisted lamellar keratectomy was performed. The ex vivo porcine corneas were categorized into four groups depending on the trephined depth: 250 microm (G1), 375 microm (G2), 500 microm (G3) and 750 microm (G4). The stroma was equally ablated at the five measurement sites in all groups. Significant differences were observed between the trephined corneal depths for resection and ablated corneal thickness in G1 (p < 0.001). No significant differences were observed between the trephined corneal depth for resection and the ablated corneal thickness in G2, G3, and G4. The resection percentage was similar in all groups after microscopic imaging of corneal sections. Air assisted lamellar keratectomy (AK) and conventional keratectomy (CK) method were applied to six beagles, after which development of corneal haze was evaluated weekly until postoperative day 28. The occurrence of corneal haze in the AK group was significantly higher than that in the CK group beginning 14 days after surgery. Alpha-smooth muscle actin expression was significantly higher in the AK group (p < 0.001) than the CK group. Air assisted lamellar keratectomy was used to achieve the desired corneal thickness after resection and produce sufficient corneal haze.

Effects of conditioned media from human amniotic epithelial cells on corneal alkali injuries in rabbits

This study was performed to evaluate the effects of conditioned media (CM) from human amniotic epithelial cells (HAECs) on the corneal wound healing process. Eighteen rabbits (36 eyes) were used and randomly assigned to three groups according treatment: CM from HAECs (group 1), vehicle alone (group 2), and saline (group 3). Corneal alkali injuries were induced with 1 N sodium hydroxide. Each reagent used for treatment evaluation was injected into the dorsal bulbar subconjunctiva and the area of the corneal epithelial defect was measured every other day. Two animals from each group were euthanized at a time on days 3, 7, and 15, and the cornea was removed for histological examination. The sum of the epithelial defect areas measured on day 0 to day 6 as well as day 0 to day 14 in group 1 was significantly smaller than those of other groups. Histological examination revealed that the group 1 corneas had less inflammatory cell infiltration and showed more intact epithelial features compared to the other groups. These results suggest that CM from HAECs promote corneal wound healing in rabbits.

The Soluble Form of the Cellular Prion Protein Enhances Phagocytic Activity and Cytokine Production by Human Monocytes Via Activation of ERK and NF-kappaB

The PrP(C) is expressed in many types of immune cells including monocytes and macrophages, however, its function in immune regulation remains to be elucidated. In the present study, we examined a role for PrP(C) in regulation of monocyte function. Specifically, the effect of a soluble form of PrP(C) was studied in human monocytes. A recombinant fusion protein of soluble human PrP(C) fused with the Fc portion of human IgG1 (designated as soluble PrP(C)-Fc) bound to the cell surface of monocytes, induced differentiation to macrophage-like cells, and enhanced adherence and phagocytic activity. In addition, soluble PrP(C)-Fc stimulated monocytes to produce pro-inflammatory cytokines such as TNF-alpha, IL-1beta, and IL-6. Both ERK and NF-kappaB signaling pathways were activated in soluble PrP(C)-treated monocytes, and inhibitors of either pathway abrogated monocyte adherence and cytokine production. Taken together, we conclude that soluble PrP(C)-Fc enhanced adherence, phagocytosis, and cytokine production of monocytes via activation of the ERK and NF-kappaB signaling pathways.

A modified method for inducing periodontitis in dogs using a silk-wire twisted ligature

This study was designed to assess the effectiveness of a modified silk ligature twisted with wire for inducing advanced periodontitis. Periodontitis was induced in five premolars and one molar of 20 healthy dogs over a 60-day period. The dogs were divided into four groups according to the ligature-inducing materials used: soft moistened food only, wire ligature (WL), silk ligature (SL) and twisted ligature with silk and wire (SWL). Periodontal indices were recorded, and dental radiographs were taken before and after 60 days of ligation. The ligatures were checked daily and the day the ligature fell out was noted. The period during which the ligatures were maintained was significantly shorter for the SL group compared to the SWL group (p < 0.05). Results of the clinical examination showed that almost all periodontal status parameters including the plaque index, gingival index, clinical attachment level, and bleeding on probing were significantly exacerbated in the SWL group compared to the other groups (p < 0.05). Radiographic evaluation demonstrated that alveolar bone levels were significantly lower in the SWL group than the other groups on day 60 (p < 0.05). These results suggested that experimental periodontitis induced by SWL could be an effective method for investigating periodontitis in canine models.

Correlation between Serum D-Dimer Level and Volume in Acute Ischemic Stroke

OBJECTIVE: D-dimer is a breakdown product of fibrin mesh after factor XIII stabilization. Previously, many authors have demonstrated a relationship between D-dimer level and stroke progression or type. This study aimed to investigate the relationship between D-dimer level and stroke volume. METHODS: Between January 2008 and December 2009, we analyzed the D-dimer levels of 59 acute ischemic stroke patients in our neurosurgical department both upon admission and after seven days of initial treatment. Each patient's National Institute of Health Stroke Scale score, modified Rankin Scales score, Glasgow outcome score, and infarction volume were also evaluated. RESULTS: Mean D-dimer level at admission was 626.6 microg/L (range, 77-4,752 microg/L) and the mean level measured after seven days of treatment was 238.3 microg/L (range, 50-924 microg/L). Mean D-dimer level at admission was 215.3 microg/L in patients with focal infarctions, 385.7 microg/L in patients with multiple embolic infarctions, 566.2 microg/L in those with 1-19 cc infarctions, 668.8 microg/L in 20-49 cc infarctions, 702.5 microg/L in 50-199 cc infarctions, and 844.0 microg/L in >200 cc infarctions (p=0.044). On the 7th day of treatment, the D-dimer levels had fallen to 201.0 microg/L, 293.2 microg/L, 272.0 microg/L, 232.8 microg/L, 336.6 microg/L, and 180.0 microg/L, respectively (p=0.530). CONCLUSION: Our study shows that D-dimer level has the positive correlation with infarction volume and can be use to predict infarction-volume.

Rapid-Growing Juvenile Xanthogranuloma on the Scalp in 18-Month-Old Girl

Juvenile xanthogranuloma (JXG) is an uncommon histiocytic cutaneous lesion. An 18-month-old girl visited our clinic due to rapid growing orange-yellowish lesion on scalp. Enlarging time from 1 mm to 12 mm was just 8 weeks. We excised the tumor and adjacent normal tissue. Histopathological study showed numerous eosinophils and Touton giant cells within the lesion. Immunohistochemical study revealed positive immunoreactivity for CD68 in most areas. No recurrence was seen during 12 months after resection. We report a case with rapidly growing JXG on scalp with peculiar histopathologic findings.

Traumatic Extrapleural Hematoma Mimicking a Hemothorax / 대한흉부외과학회지

Extrapleural hematoma results from blood accumulating between the parietal pleura and the endothoracic fascia, whereas hemothorax shows pooling in the pleural space. Extrapleural hematoma results from an intact parietal pleura that blocks blood from escaping the pleural cavity. Extrapleural fat, a fat layer outside the pleura in the chest wall between the parietal pleura and the endothoracic fascia, is pathognomonic on computed tomography. We diagnosed traumatic extrapleural hematoma and treated it with video-assisted thoracic surgery. We report here on this case along with a review of the literature.

Low Dose Spinal Anesthesia for Ambulatory Surgery of Varicose Vein / 대한흉부외과학회지

\BACKGROUND: Bupivacaine with fentanyl might be suitable as the spinal anesthesia for performing ambulatory surgery to treat varicose vein. MATERIAL AND METHOD: Thirty patients who underwent spinal anesthesia for a varicose vein operation were enrolled in this study. They were classified into 2 groups of either fentanyl 25 ug mixed with bupivacaine 4 mg (group FB4) or bupivacaine 8 mg (group B8). We compared the groups for the success of the analgesia, the recovery time from sensory and motor block, the side effects and the postoperative complications. RESULT: The groups did not differ significantly regarding the success of analgesia (13 of 15 [group FB4], 15 of 15 [group B8]). None of the patients were converted to general anesthesia due to surgical pain. None of the patients required medication for hypotension and/or bradycardia. The operative and nonoperative side effects of motor block (tested for by using a modified Bromage scale) was significantly lower in group FB4 than that in group B8, as checked at 2 hours after spinal anesthesia (p<0.05). Recovery from spinal block was significantly quicker in group FB4 than that in group B8 (p<0.05). The first voluntary micturition time did not differ significantly (6.5 hours v 4.5 hours [p=0.143]) between the groups, but a nelatone catheter was inserted into 2 of the group B8 patients due to dysuria. CONCLUSION: Adequate intraoperative analgesia and hemodynamic stability and faster mobilization were achieved using bupivacaine 4 mg with fentanyl 25 ug. Low dose spinal anesthesia with fentanyl is suitable for performing ambulatory surgery to treat varicose vein.

Ergosterol and Water Changes in Tricholoma matsutake Soil Colony during the Mushroom Fruiting Season

The purpose of this study is to understand spatio-temporal changes of active fungal biomass and water in Tricholoma matsutake soil colonies during the mushroom fruiting season. The active fungal biomass was estimated by analyzing ergosterol content at four different points within four replicated locations in a single circular T. matsutake colony at Ssanggok valley in the Sogri Mt. National Park in Korea during 2003 to 2005. The four points were the ahead of the colony, the front edge of the colony and 20 cm and 40 cm back from the front edge of the colony. Ergosterol content was 0.0 to 0.7 microg per gram dried soil at the ahead, 2.5 to 4.8 microg at the front edge, 0.5 to 1.8 microg at the 20 cm back and 0.3 to 0.8 microg at the 40 cm back. The ergosterol content was very high at the front edge where the T. matsutake hyphae were most active. However, ergosterol content did not significantly change during the fruiting season, September to October. Soil water contents were lower at the front edge and 20 cm back from the front edge of the colony than at the ahead and 40 cm back during the fruiting season. Soil water content ranged from 12 to 19% at the ahead, 10 to 11% at the edge, 9 to 11% at the 20 cm back and 11 to 15% at the 40 cm back. Our results suggest that the active front edge of the T. matsutake soil colony could be managed in terms of water relation and T. matsutake ectomycorrhizal root development.

Transcriptional targeting of gene expression in breast cancer by the promoters of protein regulator of cytokinesis 1 and ribonuclease reductase 2

For cancer gene therapy, cancer-specific over-expression of a therapeutic gene is required to reduce side effects derived from expression of the gene in normal cells. To develop such an expression vector, we searched for genes over-expressed and/or specifically expressed in cancer cells using bioinformatics and have selected genes coding for protein regulator of cytokinesis 1 (PRC1) and ribonuclease reductase 2 (RRM2) as candidates. Their cancer-specific expressions were confirmed in both breast cancer cell lines and patient tissues. We compared each promoter's cancer-specific activity in the breast normal and cancer cell lines using the luciferase gene as a reporter and confirmed cancer-specific expression of both PRC1 and RRM2 promoters. To test activities of these promoters in viral vectors, the promoters were also cloned into an adeno-associated viral (AAV) vector containing green fluorescence protein (GFP) as the reporter. The GFP expression levels by these promoters were various depending on cell lines tested and, in MDA-MB-231 cells, GFP activities derived from the PRC1 and RRM2 promoters were as strong as that from the cytomegalovirus (CMV) promoter. Our result showed that a vector containing the PRC1 or RRM2 promoter could be used for breast cancer specific overexpression in gene therapy.

Treatment of a Nail in the Intestine after a Neck Injury from Accidental Firing of the Nail Gun: A case report / 대한흉부외과학회지

A 42-year-old male was admitted because of an anterior neck injury due to accidental firing of a nail gun. On chest X-ray, the nail was stuck in the anterior neck, migrated to the chest, and then to the abdomen. Only the trachea was damaged, leaving no injury in the esophagus. The nail in the intestine was removed by colonoscopy. The patient showed complete recovery without complications after fasting and conservative treatment. We report this case with a literature review.