No abstract available.
Epidermal Cyst* ; Melanins*

OBJECTIVES: Insufficient sleep could have harmful effects on mental health. We examined the mental health status of Korean adolescents according to daily sleep time and subjective sleep satisfaction using a nationwide representative sample of Korean adolescents. METHODS: Data from the 2016 Korean Youth Risk Behavior Web-based Survey was used. Sleep duration on weekdays and subjective sleep satisfaction during the past week were asked. Participants' perceived health, happiness, stress, depressive mood, and suicidality during past 12 months were also investigated. Participants were classified by mean duration of daily sleep time and the level of sleep satisfaction, and the odds of having mental health problems were compared. RESULTS: Compared to adolescents who slept more than 6 hours per day and satisfied with their sleep, adolescents who slept less than 6 hours per day and/or dissatisfied with their sleep were less likely to perceive themselves healthy and happy. They were also more likely to have severe stress, depressive mood, and suicidality, with highest odds ratios among adolescents with both short and dissatisfying sleep. CONCLUSIONS: Given the significant associations between sleep insufficiency and mental health problems, attention to the sleep shortage among Korean adolescents is needed. Prospective studies are warranted to elucidate the causal relationships between subjective and objective sleep insufficiency and psychiatric conditions.
Adolescent ; Depression ; Happiness ; Humans ; Mental Health ; Odds Ratio ; Prospective Studies ; Risk-Taking ; Suicidal Ideation

Purpose: We aim to assess infertility stress, gratitude, and changes in couple relationship of the women under reproductive treatments and to identify the relationships between variables. Methods: The subjects were 212 infertile women receiving reproductive treatments. The data were collected by self-administered questionnaires from June to August in 2019. The questionnaire consisted of the questions about infertility stress, gratitude and changes in their couple relationships. Descriptive statistics, t-tests, 1-way analysis of variance, and correlation coefficient were analyzed using the SPSS 26.0 Windows program. Results: The level of Infertility stress, gratitude, and changes in couple relationship averaged 3.23±0.59 (range of 1 to 6), 4.85±1.06 (range of 1 to 6), 3.03±0.55 (range of 1 to 5), respectively. Infertility stress had a negative correlation with gratitude (r=-0.322, p<0.001) and changes in couple relationship (r= -0.371, p<0.001). Gratitude also had a negative correlation with changes in couple relationship (r=-0.370, p<0.001). Conclusion The results revealed that infertility stress has a negative correlation with gratitude and changes in couple relationship. Thus, psychological interventions that can alleviate negative emotions should be provided.

Purpose: We aim to assess infertility stress, gratitude, and changes in couple relationship of the women under reproductive treatments and to identify the relationships between variables. Methods: The subjects were 212 infertile women receiving reproductive treatments. The data were collected by self-administered questionnaires from June to August in 2019. The questionnaire consisted of the questions about infertility stress, gratitude and changes in their couple relationships. Descriptive statistics, t-tests, 1-way analysis of variance, and correlation coefficient were analyzed using the SPSS 26.0 Windows program. Results: The level of Infertility stress, gratitude, and changes in couple relationship averaged 3.23±0.59 (range of 1 to 6), 4.85±1.06 (range of 1 to 6), 3.03±0.55 (range of 1 to 5), respectively. Infertility stress had a negative correlation with gratitude (r=-0.322, p<0.001) and changes in couple relationship (r= -0.371, p<0.001). Gratitude also had a negative correlation with changes in couple relationship (r=-0.370, p<0.001). Conclusion The results revealed that infertility stress has a negative correlation with gratitude and changes in couple relationship. Thus, psychological interventions that can alleviate negative emotions should be provided.

PURPOSE: The mechanism of erectile dysfunction in type II non-insulin dependent diabetes mellitus (NIDDM) has not been well demonstrated. The aims of this study were to investigate erectile function and cavernosal TGF-beta expression in Otsuka Long-Evans Tokushima Fatty (OLETF) rats, which develop NIDDM naturally. MATERIALS AND METHODS: Twenty male OLETF rats and ten control LETO rats were included in this study. After 30 weeks, blood glucose levels and body weights were measured. Systemic arterial pressure and intracavernosal pressure were measured before and after pelvic nerve stimulation. Cross sections of the penis were processed for histologic and immunohistochemistry examinations. RESULTS: The mean body weights and mean blood glucose levels were significantly higher in the OLETF group (645.0 40.0 g; 130.8 55.6 mg/ml) compared to control group (538.0 14.4 g; 84.1 14.7 mg/ml), respectively (p<0.05). Nerve stimulation-induced peak intracavernosal pressure (mmHg) was significantly decreased in the OLETF group (41.3 15.4 mmHg) compared to control group (83.3 15.8 mmHg) (p<0.05). In the OLETF rats, the collagen connective tissue in the corpus cavernosum showed a dense and irregular arrangement. The immunoreactivity for TGF-beta 1 was prominent in collagen fibers, fibroblast and smooth muscle in the OLETF rats. CONCLUSIONS: In this study, OLETF rats showed significantly decreased erectile function compared with control rats, and histologic examination revealed cavernosal fibrosis and increased TGF-beta 1 expression. These results imply that the OLETF rat may be a good model to study the mechanism of erectile dysfunction in NIDDM.
Animals ; Arterial Pressure ; Blood Glucose ; Body Weight ; Collagen ; Connective Tissue ; Diabetes Mellitus ; Diabetes Mellitus, Type 2 ; Erectile Dysfunction ; Fibroblasts ; Fibrosis ; Humans ; Immunohistochemistry ; Male ; Muscle, Smooth ; Penis ; Rats ; Rats, Inbred OLETF* ; Transforming Growth Factor beta*

Histone deacetylase 4 (HDAC4), a class IIa HDAC, has gained attention as a potential therapeutic target in treating inflammatory and metabolic processes based on its essential role in various biological pathways by deacetylating non-histone proteins, including transcription factors. The activity of HDAC4 is regulated at the transcriptional, post-transcriptional, and post-translational levels. The functions of HDAC4 are tissue-dependent in response to endogenous and exogenous factors and their substrates. In particular, the association of HDAC4 with non-histone targets, including transcription factors, such as myocyte enhancer factor 2, hypoxia-inducible factor, signal transducer and activator of transcription 1, and forkhead box proteins, play a crucial role in regulating inflammatory and metabolic processes. This review summarizes the regulatory modes of HDAC4 activity and its functions in inflammation, insulin signaling and glucose metabolism, and cardiac muscle development.

Objective: Alcohol use disorder (AUD) is a global burden but is also one of the most undertreated mental disorders. This study estimates the treatment rate (i.e., help-seeking status) of high-risk drinkers and factors associated with not receiving treatment in Korea using nationally representative National Health Insurance Service-National Sample Cohort (NHIS-NSC) data. Methods: Among 1,025,340 participants, we eliminated those under 20 and those who did not respond to the question regarding alcohol consumption. High-risk drinkers were classified based on their frequency and quantity of alcohol consumption (4 or more drinks for women, 5 or more drinks for men per day on average). In total, 32,225 high-risk drinkers were checked for an actual AUD diagnosis to see their treatment-seeking status. Results: Among 32,225 high-risk drinkers, only 1.24% had an AUD diagnosis, showing that over 98% of those who could be diagnosed with AUD are not seeking treatment. Factors associated with not seeking treatment were female sex, BMI higher or equal to 18.6, former smoker, middle-aged, and Charlson Comorbidity Index (CCI). Conclusion Our data show that many high-risk drinkers do not seek treatment in Korea. Experts, policymakers, and clinicians should promote help-seeking behavior for AUD and pay close attention to those at risk of not receiving treatment for AUD.

Halitosis is a very common disease that affects the majority of the population and is characterized by unpleasant odor during expiration. Anaerobic bacteria produce a range of malodorous substances including volatile sulfur compounds. To reduce oral malodor, the amount of oral microorganisms should be managed through brushing, scraping, and use of antibacterial agents. In this study, a mouthwash containing 0.05% cetylpyridinium chloride was tested on 22 candidates with oral malodor for two weeks to confirm oral malodor reduction through the use of antibacterial mouthwashes. Volatile sulfur compound measurements were significantly lower after using the mouthwash than before using it; thus, the mouthwash effectively reduced oral malodor.
Anti-Bacterial Agents ; Bacteria ; Bacteria, Anaerobic ; Cetylpyridinium ; Halitosis ; Mouth ; Mouthwashes ; Odors ; Sterilization ; Sulfur ; Sulfur Compounds

OBJECTIVES: Anhedonia, defined as an inability to experience pleasure, has been considered to be a core feature of schizophrenia and depression. The purpose of the present study was to compare the specific characteristics of anhedonia in patients with the two illnesses by examining hedonic capacity during phased hedonic experience. METHODS: Hedonic rating tasks, using the film clips of physical and social hedonic stimuli and neutral stimuli, were performed by 29 patients with schizophrenia, 20 patients with depression, and 29 normal controls. Each task consisted of 'preview phase' with insufficient emotional information, and a subsequent 'theme phase' with sufficient emotional information. RESULTS: In normal controls, the mean hedonic score was increased in the theme phase compared with the preview phase, suggesting an appropriate augmentation of the hedonic response. In patients with schizophrenia, hedonic scores in the preview phase were comparable with those in normal controls, but showed deficient augmentation in the theme phase. In patients with depressive disorder, the range of increments in scores between the preview and theme phases was normal, but the scores themselves were lower in both phases than in the other two groups. CONCLUSION: The results indicate that patients with schizophrenia show a deficient augmentation of the hedonic response, whereas patients with depressive disorder have a pervasive lack of hedonic capacity.
Anhedonia ; Depression ; Depressive Disorder ; Humans ; Pleasure ; Schizophrenia

OBJECTIVES: The author investigated the relationship between the environmental tobacco smoke exposure during mid-pregnancy and early childhood and neurobehavioral outcomes of preschool children and if there is any effect of the genetic polymorphism of glutathione S-transferase (GST) M1 and T1 on this relationship. METHODS: The participants were the pregnant women (week 24-28) who visited the obstetrics and gynecology department (between 2001 and 2004). They had been evaluated for their sociodemographic data including direct and environmental tobacco smoke exposure history and the urine specimen had been sampled for the measurement of cotinine. The offsprings' urine specimen and blood sampling had been done and the socioeconomic data including the environmental tobacco smoke exposure history was evaluated at age 3. The cotinine level of urine specimen was measured and GST polymorphism was analyzed. The offsprings completed Korean-Childhood Behavioral Check List (K-CBCL) at age 4-5. RESULTS: The environmental tobacco smoke exposure during mid-pregnancy based on urine cotinine level has a significant association with increased total score and externalizing problem score of K-CBCL (p<0.05). The environmental tobacco smoke exposure based on urine cotinine level at age 3 is associated increased total score, externalizing problem score and internalizing problem score of K-CBCL with no statistical significance. The environmental tobacco smoke exposure after controlling for tobacco smoke exposure during pregnancy, however, is significantly associated with the increased externalizing problem scores (p=0.04). The environmental tobacco smoke exposure is associated with increased total score, externalizing problem score and internalizing problem score of K-CBCL with GSTM1 null type or GSTT1 null type at age 3 although there was no statistical significance. CONCLUSION: The environmental tobacco smoking exposure during pregnancy and at early childhood is associated with childhood behavioral problems. The clinical implication of this study is that it is important to avoid the environmental tobacco smoke exposure during pregnancy and early childhood and to monitor the possible emergence of behavioral problems of children.
Child ; Child, Preschool ; Cotinine ; Female ; Glutathione ; Glutathione Transferase ; Gynecology ; Humans ; Obstetrics ; Organothiophosphorus Compounds ; Polymorphism, Genetic ; Pregnancy ; Pregnant Women ; Smoke ; Smoking ; Tobacco