Psychiatry in former socialist countries: implications for north korean psychiatry

Fluoxetine results in misleading conclusions on fish behavior

Fluoxetine is an antidepressant medicine causing relaxation and mood improvement in people, with silencing certain personality traits in some cases. The question arise if such phenomena can be observed in nontarget organisms such as fish. Fluoxetine affects fishes behavior; however, it is not known if the medicine affects its "personality." This study aimed to evaluate the reaction of the invasive Neogobius fluviatilis and native Gobio gobio individuals to fluoxetine at environmental concentration of 360 ng/L. We prepared three variants of the experiments: (a) behavioral trials with unexposed fishes, (b) behavioral trials with the same fishes after 21 days of fluoxetine exposure, and (c) behavioral trials with the same fishes after 21-day depuration period, that is, without fluoxetine. The fishes reaction time (RT), that is, difference in time spent on reaching food with and without the necessity of overcoming the obstacle, was analyzed. Additionally, the personality, bold or shy, traits of each fish individual, was assigned. The results indicated that environmental concentrations of the antidepressant influenced RT. The average RT of the fishes cultured with fluoxetine was by 7-min shorter in comparison with the nonexposed control. Share of individuals exposed to fluoxetine assigned as bold raised to 71.4% in comparison with 46.4% in nonexposed control. This sheds new light on wild fishes behavior caught from freshwater. Environmental concentrations of the antidepressant influenced the time of fishes reaction and share individuals assigned as bold. Moreover, 21-day recovery lasting might be not enough to get fluoxetine effect on fishes.

Associations between defense mechanisms and life satisfaction among North Korean refugees

BACKGROUND

The present study investigated associations between defense mechanisms and life satisfaction among North Korean refugees living in South Korea.

METHODS

A total of 178 North Korean refugees completed the Korean version of the Defense Style Questionnaire, a revised version of the Ways of Thinking of North Korean Defectors scale, the Center for Epidemiologic Studies-Depression Scale, and the State-Trait Anxiety Inventory. Multiple stepwise regression analysis was performed to investigate the defense mechanisms associated with North Korean refugees' life satisfaction in South Korea.

RESULTS

Among defense mechanisms, denial most strongly predicted higher overall and economic satisfaction among North Korean refugees living in South Korea (β = 0.145, p < 0.01; β = 0.137, p = 0.03, respectively) after controlling for age, gender, anxiety, depression, and number of traumatic events experienced. Furthermore, resignation predicted lower overall (β = -0.206, p < 0.001) and economic satisfaction (β = -0.134, p = 0.02). However, the association between resignation and life satisfaction was not significant after controlling for depression, anxiety, and number of traumatic events experienced.

CONCLUSIONS

Specific defense mechanisms such as high denial and low resignation were associated with life satisfaction in South Korea among North Korean refugees. Our findings suggest that refugees' psychological defense mechanisms may affect their satisfactory resettlement.

Research output on mental health problems in North Korea between 2006 and 2017: A bibliographic analysis of North Korean medical journal articles

Despite the continuing interests in political, economic, and public health issues of North Korea, little is known about mental health problems in North Korea. To gain a glimpse into this area of interest, we aimed to explore the characteristics of mental health research in North Korea and to identify the emphasis therein. In this context, four North Korean medical journals were selected from the Information Center on North Korea, with publication dates 2006-2017 (inclusive). For this bibliographic study's scope, we targeted studies on psychiatric problems in humans. We first selected articles based on their titles, and then finalized the study sample after reviewing the full text of primary sample articles. For main outcome measures, we used the absolute number and proportion of mental health research articles relative to total publications and the distribution of papers by research themes as defined by ICD-10 categories. Collectively, four journals published 162 mental health research articles from 2006 to 2017. The yearly volume and proportion varied between two and twenty-four and between 0.3 % and 2.7 %, respectively. The most frequently addressed ICD-10 category was F40-48, namely 'Neurotic, stress-related and somatoform disorders,' and the most frequently investigated condition was somatoform disorders. In conclusion, there has been a slow but steady increase in the research volume of psychiatry and mental health problems since 2011. The finding that the highest amount of research was conducted on somatoform disorders may suggest that mental disorder symptoms may be represented differently under the influence of socialism in North Korea.

Association between memory impairment and brain metabolite concentrations in North Korean refugees with posttraumatic stress disorder

Individuals with posttraumatic stress disorder (PTSD) had experiences of enormous psychological stress that can result in neurocognitive and neurochemical changes. To date, the causal relationship between them remains unclear. The present study is to investigate the association between neurocognitive characteristics and neural metabolite concentrations in North Korean refugees with PTSD. A total of 53 North Korean refugees with or without PTSD underwent neurocognitive function tests. For neural metabolite scanning, magnetic resonance spectroscopy of the hippocampus and anterior cingulate cortex (ACC) has been conducted. We assessed between-group differences in neurocognitive test scores and metabolite levels. Additionally, a multiple regression analysis was carried out to evaluate the association between neurocognitive function and metabolite levels in patients with PTSD. Memory function, but not other neurocognitive functions, was significantly lower in the PTSD group compared with the non-PTSD group. Hippocampal N-acetylaspartate (NAA) levels were not different between groups; however, NAA levels were significantly lower in the ACC of the PTSD group than the non-PTSD group (t = 2.424, p = 0.019). The multiple regression analysis showed a negative association between hippocampal NAA levels and delayed recall score on the auditory verbal learning test (β = -1.744, p = 0.011) in the non-PTSD group, but not in the PTSD group. We identified specific memory impairment and the role of NAA levels in PTSD. Our findings suggest that hippocampal NAA has a protective role in memory impairment and development of PTSD after exposure to traumatic events.

The political use of psychiatry: A comparison between totalitarian regimes

BACKGROUND

After the end of Second World War, the recent experience of the Nazi horrors stimulated a debate about the political use of psychiatry. Over the years, the focus shifted on major dictatorships of the time and especially on Soviet Union.

AIMS

This article aims to provide a critical review of the ways in which psychiatry was used by totalitarian regimes of the 20th century.

METHODS

We summarized relevant literature about political use of psychiatry in totalitarian regimes of the 20th century, with particular focus on Fascism, Nazism, Argentina dictatorship, Soviet Union and China.

RESULTS

One of the features that are common to most of the dictatorships is that the use of psychiatry has become more prominent when the regimes have had the need to make more acceptable the imprisonment of enemies in the eyes of the world. This for example happened in the Nazi regime when sterilization and killing of psychiatric patients was explained as a kind of euthanasia, or in the Soviet Union after the formal closure of the corrective labor camps and the slow resumption of relations with the capitalistic world, or in China to justify persecution of religious minorities and preserve economic relations with Western countries.

CONCLUSION

Psychiatry has been variously used by totalitarian regimes as a means of political persecution and especially when it was necessary to make acceptable to public opinion the imprisonment of political opponents.

Effects of Psychiatric Symptoms on Attention in North Korean Refugees

OBJECTIVE

We investigated the performance of North Korean refugees on attention tasks, and the relationship between that performance and psychiatric symptoms.

METHODS

Sustained and divided attention was assessed using the computerized Comprehensive Attention Test in North Korean refugees and in South Koreans. All participants also completed the Beck Depression Inventory, the Beck Anxiety Inventory, the Impact of Event Scale-Revised and the Dissociative Experiences Scale-II (DES-II).

RESULTS

The North Korean refugees showed slower reaction times (RTs) on the visual sustained attention task compared to the South Koreans after controlling for age and sex. North Korean refugees had a greater number of omission errors (OEs) on the divided attention task and a higher standard deviation (SD) of RT. Total DES-II scores of the North Korean refugees were associated with the number of OEs and the SD of RT on the sustained attention task, and with the number of OEs on the divided attention task.

CONCLUSION

North Korean refugees showed poorer performance on computerized attention tasks. In addition, attention deficit among North Korean refugees was associated with their dissociative experiences. Our results suggest that refugees may have attention deficits, which may be related to their psychiatric symptoms, particularly dissociation.

Insomnia in North Korean Refugees: Association with Depression and Post-Traumatic Stress Symptoms

OBJECTIVE

We investigated the prevalence of insomnia and its clinical characteristics in North Korean refugees.

METHODS

North Korean refugees living in South Korea (48 males, 129 females; mean age 38.22±12.24 years) and South Koreans (112 males, 203 females; mean age 39.48±10.32 years) completed the following questionnaires: the Self-reported Questionnaire on Insomnia, Center for Epidemiological Studies-Depression Scale (CES-D), Trauma Exposure Check List for North Korean Refugees, and the Impact of Event Scale-Revised (IES-R).

RESULTS

North Korean refugees had insomnia more often than South Koreans did (38.42% vs. 8.89%). Depression combined with insomnia was also more prevalent in North Korean refugees (28.25% vs. 3.17%). Compared with South Koreans with insomnia, North Korean refugees with insomnia showed higher CES-D scores. The North Korean refugees with insomnia had experienced a larger number of traumatic events, and had higher CES-D and IES-R scores compared to North Korean refugees without insomnia. Insomnia in North Korean refugees was also associated with the presence of significant depressive and post-traumatic stress disorder (PTSD) symptoms.

CONCLUSION

Insomnia was common in North Korean refugees and was closely associated with depressive and PTSD symptoms. Our study suggests that complaints of insomnia may indicate more severe psychopathology, especially in refugees.

Association between defense mechanisms and psychiatric symptoms in North Korean Refugees

OBJECTIVE

Defense mechanism may contribute to psychiatric symptoms. Refugees are vulnerable to various psychiatric symptoms, such as depression, anxiety, somatization, and those associated with post-traumatic stress disorder (PTSD), due to their traumatic or stressful experiences. We aimed to investigate the mediating role of each defense mechanism in the occurrence of specific psychiatric symptoms in North Korean refugees.

METHOD

Among 213 North Korean refugees initially recruited, 201 completed the following questionnaires: the Defense Style Questionnaire, the Center for Epidemiological Studies-Depression Scale (CES-D), the State-Trait Anxiety Inventory-State (STAI-S), the somatization subscale of Symptom Check-List-90-Revised (SCL-90-R), and the Impact of Event Scale-Revised (IES-R). Stepwise regression analysis was performed to determine the defense mechanisms more predominantly associated with specific psychiatric symptoms after controlling for age, sex, number of traumatic experiences, and other psychiatric symptoms (depressive symptoms and/or anxiety).

RESULTS

Higher levels of depression were independently predicted by greater use of resignation. More use of acting out and less use of humor and sublimation independently predicted higher levels of anxiety. Somatization was independently predicted by more use of inhibition. PTSD symptoms were independently predicted by more use of undoing and isolation.

CONCLUSIONS

Specific psychiatric symptoms were associated with specific defense mechanisms in North Korean refugees. Our findings suggest that the manifest psychiatric symptoms of refugees may be mediated by their dominant defense mechanism.