The ezrin-radixin-moesin (ERM) proteins are a family of membrane-associated proteins known to play roles in cell-shape determination as well as in signaling pathways. We have previously shown that amphetamine decreases phosphorylation levels of these proteins in the nucleus accumbens (NAcc), an important neuronal substrate mediating rewarding effects of drugs of abuse. In the present study, we further examined what molecular pathways may be involved in this process. By direct microinjection of LY294002, a PI3 kinase inhibitor, or of S9 peptide, a proposed GSK3β activator, into the NAcc core, we found that phosphorylation levels of ERM as well as of GSK3β in this site are simultaneously decreased. These results indicate that ERM proteins are under the regulation of Akt-GSK3β signaling pathway in the NAcc core. The present findings have a significant implication to a novel signal pathway possibly leading to structural plasticity in relation with drug addiction.
Amphetamine ; Animals ; Glycogen Synthase Kinases ; Humans ; Membrane Proteins ; Microinjections ; Negotiating ; Neurons ; Nucleus Accumbens ; Phosphorylation ; Phosphotransferases ; Plastics ; Proto-Oncogene Proteins c-akt ; Rats ; Reward ; Signal Transduction ; Street Drugs ; Substance-Related Disorders

OBJECTIVE: We aimed to investigate the ability of readout-segmented echo-planar imaging (rs-EPI)-based diffusion tensor imaging (DTI) in assessing the microstructural change of extraocular muscles (EOMs) and optic nerves in patients with thyroid-associated orbitopathy (TAO) as well as in evaluating disease activity.MATERIALS AND METHODS: We enrolled 35 TAO patients and 22 healthy controls (HCs) who underwent pre-treatment rs-EPI-based DTI. Mean, axial, and radial diffusivity (MD, AD, and RD) and fractional anisotropy (FA) of the medial and lateral EOMs and optic nerve for each orbit were calculated and compared between TAO and HC groups and between active and inactive TAO groups. Factors such as age, sex, disease duration, mediation, and smoking history between groups were also compared. Logistic regression analysis was used to evaluate the predictive value of significant variables for disease activity.RESULTS: Disease duration was significantly shorter in active TAOs than in inactive ones (p < 0.001). TAO patients showed significantly lower FA and higher MD, AD, and RD than HCs for both medial and lateral EOMs (p < 0.001), but not the AD value of lateral EOMs (p = 0.619). Active patients had significantly higher FA, MD, and AD than inactive patients for medial EOMs (p < 0.005), whereas only FA differed significantly in the lateral EOMs (p = 0.018). The MD, AD, and RD of optic nerves were significantly lower in TAO patients than HCs (p < 0.05), except for FA (p = 0.129). Multivariate analysis showed that the MD of medial EOMs and disease duration were significant predictors for disease activity. The combination of these two parameters showed optimal diagnostic efficiency for disease activity (area under the curve, 0.855; sensitivity, 68.4%; specificity, 96.9%).CONCLUSION: rs-EPI-based DTI is promising in assessing microstructural changes of EOMs and optic nerves and can help to indicate the disease activity of TAO, especially through the MD of medial EOMs.
Anisotropy ; Diffusion Tensor Imaging ; Diffusion ; Echo-Planar Imaging ; Humans ; Logistic Models ; Multivariate Analysis ; Muscles ; Negotiating ; Optic Nerve ; Orbit ; Sensitivity and Specificity ; Smoke ; Smoking ; Troleandomycin

PURPOSE: The purpose of this study was to construct and test a structural equation model on nursing work outcomes based on Youssef and Luthans' positive psychological capital and integrated conceptual framework of work performance.METHODS: This study used a structured questionnaire administered to 340 nurses. Data were analyzed using structural equation modeling.RESULTS: Positive psychological capital showed indirect and direct effects on job satisfaction, retention intention, organizational citizenship behavior, and nursing performance. While, the nursing work environment had direct and indirect effects on job satisfaction and nursing performance, it only had indirect effects on intention to work and organizational citizenship behavior. Additionally, a mediating effect on retention intention and organizational citizenship behavior was found between job satisfaction and nursing performance variables.CONCLUSION: The nursing organization needs to build a supportive work environment and reinforce positive psychological capital to improve nursing performance. Additionally, it needs to actively manage the necessary parameters involved in the stages of job satisfaction, retention intention, nursing performance, and organizational citizenship behavior of nurses. The findings propose the continuous management of nursing personnel based on nurses' attitude outcome, behavioral intention, behavioral outcome, and stage of role performance.
Attitude of Health Personnel ; Intention ; Job Satisfaction ; Negotiating ; Nursing ; Psychology, Industrial ; Task Performance and Analysis ; Work Performance

High-intensity focused ultrasound (HIFU) is a promising ablation technique for benign thyroid nodules. Current evidence has found good short- to medium-term outcomes, similar to those of better-established ablation techniques such as radiofrequency and laser ablation. The fact that it does not require insertion of a needle into the target makes HIFU a truly non-invasive treatment. Although it is not without risks, its low risk profile makes it an attractive alternative to surgery. There is much room for future development, starting from expanding the current indications to enhancing energy delivery. Relapsed Graves disease and papillary microcarcinoma are diseases that can benefit from HIFU treatment. Its role in the mediation of immune responses and synergistic effects with immunotherapy are promising in the fight against metastatic cancers.
Ablation Techniques ; Goiter, Nodular ; Graves Disease ; High-Intensity Focused Ultrasound Ablation ; Hyperthermia, Induced ; Immunotherapy ; Laser Therapy ; Needles ; Negotiating ; Thyroid Diseases ; Thyroid Gland ; Thyroid Nodule ; Ultrasonography ; Ultrasonography, Interventional

BACKGROUND: Individual attitudes toward suicide are known to markedly influence suicidal ideation and suicidal behavior. Therefore, this study aimed to determine the factors associated with attitudes toward suicide.METHODS: This study was conducted on 3,213 adult men and women living in a province of Korea. After excluding 281 participants because of unreliable responses, the remaining 2,932 were included in the data analysis. Demographic factors were investigated, and psychological factors were evaluated. Attitudes toward suicide were evaluated using the Attitudes Towards Suicide-20, physical symptoms were evaluated using the Patient Health Questionnaire-15 (PHQ-15), self-compassion was evaluated using the Korean Self-Compassion Scale, and stress was evaluated using the Global Assessment of Recent Stress (GARS) scale. One-way analysis of variance was used to examine the psychological characteristics of attitudes toward suicide.RESULTS: Differences in various factors based on demographic characteristics were observed regarding attitudes toward suicide. Significant differences in attitudes toward suicide were observed based on severity of suicide, acceptability (F=20.332, p<0.001), prevention of suicide (F=7.700, p<0.001), and universality (F=13.741, p<0.001). The duration of suicidal ideation, self-kindness, self-judgment, common humanity, isolation, and over-identification showed differences, as did the GARS and PHQ-15 scores.CONCLUSION: This study explored the demographic and psychological factors affecting attitudes toward suicide. Adequate mediation of these factors is needed to prevent suicidal ideation and behavior.
Adult ; Demography ; Empathy ; Female ; Humans ; Korea ; Male ; Negotiating ; Psychology ; Statistics as Topic ; Stress, Psychological ; Suicidal Ideation ; Suicide

OBJECTIVES: This study examined the mediating effects of basic psychological needs between patient autonomy support from healthcare providers, and self-management among cancer survivors.METHODS: This study collected data from 148 cancer patients who had visited D hospitals in B city, Korea. A structured questionnaire was distributed to determine patient characteristics, healthcare provider autonomy support, basic psychological needs, and self-management. Data were analyzed using descriptive statistics, Pearson's correlation coefficient, and regression analysis that implemented Baron and Kenny's method for mediation were used for analyses.RESULTS: Self-management was significantly correlated with the level of healthcare provider autonomy support (r = 0.38, p < 0.001), autonomy (r = 0.40, p < 0.001), competence (r = 0.25, p = 0.002), and relatedness (r = 0.32, p < 0.001). Furthermore, autonomy (β = 0.30, p < 0.001) and relatedness (β = 0.22, p = 0.008) had partial mediating effects on the relationship between healthcare provider autonomy support and self-management (Z = 3.13, p = 0.002 and Z = 2.29, p = 0.022, respectively).CONCLUSION: Autonomy and relatedness mediated the impact of healthcare provider autonomy support for self-management among cancer survivors. This suggests that strategies for enhancing autonomy and relatedness should be considered when developing self-management interventions for cancer survivor patients.
Delivery of Health Care ; Health Personnel ; Humans ; Korea ; Mental Competency ; Methods ; Negotiating ; Self Care ; Survivors

OBJECTIVE: The most existing research has predominantly focused on city rather than township hospitals. This study aimed to explore depressive symptoms and its associated factors among general practitioners and nurses in Chinese township hospitals.METHODS: This cross-sectional study was carried out in Liaoning, China in 2016. 2,000 general practitioners and nurses in Chinese township hospitals were recruited and 1,736 of them became final subjects (effective response rate: 86.8%). Data on depressive symptoms, workplace violence (WPV), psychological capital (PsyCap), and demographic factors were collected through questionnaires. Hierarchical multiple regression was used to explore the factors related to depressive symptoms. Asymptotic and resampling strategies were applied to examine the potential mediating effect of PsyCap.RESULTS: The prevalence of depressive symptoms among the participants was 49.9%. Workplace violence was positively associated with depressive symptoms, whereas psychological capital and its components of hope, optimism and resilience were negatively associated with depressive symptoms. Psychological capital and its components of hope, optimism and resilience all played partial mediating roles between workplace violence and depressive symptoms.CONCLUSION: Nearly half of general practitioners and nurses surveyed suffered from depressive symptoms. Reduction of workplace violence and development of psychological capital can be targeted for interventions to combat depressive symptoms.
Asian Continental Ancestry Group ; China ; Cross-Sectional Studies ; Demography ; Depression ; General Practitioners ; Hope ; Humans ; Negotiating ; Optimism ; Prevalence ; Workplace Violence

Particulate matter (PM), which refers to the mixture of particles present in the air, can have harmful effects. Damage to cells by PM, including disruption of organelles and proteins, can trigger autophagy, and the relationship between autophagy and PM has been well studied. However, the cellular regulators of PM-induced autophagy have not been well characterized, especially in keratinocytes. The Aryl Hydrocarbon Receptor (AhR) is expressed in the epidermis and is activated by PM. In this study, we investigated the role of the AhR in PM-induced autophagy in HaCaT cells. Our results showed that PM led to AhR activation in keratinocytes. Activation of the AhR-target gene CYP1A1 by PM was reduced by co-treatment with α-naphthoflavone (α-NF), an AhR inhibitor. We also evaluated activation of the autophagy pathway in PM-treated keratinocytes. In HaCaT cells, treatment with PM treatment led to the induction of microtubules-associated proteins light chain 3 (LC3) and p62/SQSTM1, which are essential components of the autophagy pathway. To study the role of the AhR in mediating PM-induced autophagy, we treated cells with α-NF or used an siRNA against AhR. Expression of LC3-ІІ induced by PM was decreased in a dose dependent manner by α-NF. Furthermore, knockdown of AhR with siAhR diminished PM-induced expression of LC3-ІІ and p62. Together, these results suggest that inhibition of the AhR decreases PM-induced autophagy. We confirmed these results using the autophagy-inhibitors BAF and 3-MA. Taken together, our results indicate that exposure to PM induces autophagy via the AhR in HaCaT keratinocytes.
Autophagy ; Cytochrome P-450 CYP1A1 ; Epidermis ; Keratinocytes ; Negotiating ; Organelles ; Particulate Matter ; Receptors, Aryl Hydrocarbon ; RNA, Small Interfering

PURPOSE: This study examined the mediating and moderating effects of multicultural efficacy in the relationship between cultural empathy and cultural competence in child care teachers. METHODS: A cross-sectional descriptive survey design was used. The participants were 277 child care teachers at private and public daycare centers in G and S districts of Seoul. The survey instruments included a cultural empathy questionnaire, a multicultural efficacy scale, and a cultural competence scale. Data were analyzed using the SPSS and AMOS programs. For data analysis, descriptive statistics, correlation, and mediating and moderating effect analyses were performed. Bootstrapping was implemented to verify the mediating effect of the model developed herein. RESULTS: Positive correlations among cultural empathy, multicultural efficacy, and cultural competence were noted. Multicultural efficacy showed a significant mediating effect on the relationships between cultural empathy and cultural competence. However, there was no moderating effect. CONCLUSION: In order to enhance the cultural competence of child care teachers, it is necessary to develop a strategy that can promote their cultural empathy and multicultural efficacy. Furthermore, these results will ultimately enhance the role of child care teachers, thus contributing to the normal growth and development of multicultural children.
Child ; Child Care ; Child ; Cultural Competency ; Cultural Diversity ; Empathy ; Growth and Development ; Humans ; Negotiating ; Self Efficacy ; Seoul ; Statistics as Topic

PURPOSE: The purpose of this study was to examine the mediating effect of major satisfaction in the relationship between academic self-efficacy and academic achievement among nursing students. METHODS: Data were collected from 142 nursing students from March 5 to March 9, 2018, and the collected data were analyzed using SPSS version 21.0 for Windows. RESULTS: Academic self-efficacy had a significant effect on both major satisfaction (β=.31, p<.001), and academic achievement (β=.43, p<.001). The parameter of major satisfaction was found to have a significant effect on the dependent variable, academic achievement (β=.22, p=.007), and the independent variable, academic self-efficacy, also had a significant effect on academic achievement (β=.39, p<.001). Thus, major satisfaction was found to have a partial mediating effect on the relationship between academic self efficacy and academic achievement. The Sobel test showed that the path of the academic achievement and academic self efficacy variables was significantly mediated by major satisfaction (Z=2.99, p=.003). CONCLUSION: Academic self-efficacy was found to affect academic achievement, and major satisfaction was found to play a partial mediating role in the relationship between academic self efficacy and academic achievement.
Humans ; Job Satisfaction ; Negotiating ; Nursing ; Self Efficacy ; Students, Nursing