Sintomatología depresiva y calidad de vida en estudiantes de medicina en alta latitud sur / Depression and seasonal sensitivity among medical students residing in high southern latitudes

Background: There is no evidence for the association of depressive symptoms with the sense of well-being of undergraduate medical students residing in high southern latitudes (HSL). Aim: To assess the frequency of depressive symptoms and its relationship with seasonal sensitivity and quality of life in medical students residing in HSL. Material and Methods: The Beck anxiety and depressive symptoms inventory, the seasonal pattern assessment questionnaire and the quality-of-life questionnaire of the WHO were applied to 102 medical students residing in Magallanes, Chile. Results: Fifty-two percent of respondents reported some degree of depressive symptoms. These symptoms were significantly associated with the seasonal pattern score (r = 0.432, p < 0.01). They were also inversely associated with parameters of physical health and psychosocial health (r = −0.567, p < 0.01 and r = −0.708, p < 0.01, respectively). There was also a correlation between depressive and anxiety symptoms. Conclusions: Depressive symptoms are common in medical students residing in HSL and they are associated with seasonal sensitivity and quality of life measures.

Association of G-Protein β3 Subunit C825T Polymorphism with Seasonal Variations in Mood and Behavior

OBJECTIVE: Seasonal affective disorder and seasonal changes in mood and behavior are associated with several genes that regulate circadian rhythms. In this study, we investigated the relationship between the C825T polymorphism of the G-protein β3 subunit and seasonal variations in mood and behavior in a young healthy Korean population. METHODS: A total of 507 young Korean participants were recruited through a newspaper advertisement, and their seasonality was evaluated by the Korean version of the Seasonal Pattern Assessment Questionnaire to assess the global seasonality score (GSS). We analyzed the CC, CT, and TT genotypes and their association with the GSS score and subscales. RESULTS: T allele carriers of the GNB3 C825T polymorphism were more likely to score higher on body weight and GSS. In the female group, the T allele carriers obtained significantly high total GSS and its subscale scores for mood, body weight, energy level, and appetite; however, differences in genotypes and allele carriers were also observed in the male participants. CONCLUSION: These results suggested that GNB3 C825T polymorphism plays a role in seasonal variations in mood, body weight, energy level, and appetite in a Korean population, particularly in females.

Investigando a associação entre sintomas e queixas depressivas com as estações do ano / Investigating the association between depressive symptoms and complaints in different seasons

A depressão implica diversos prejuízos na vida dos indivíduos, ocasiona desde a incapacitação para o trabalho até o prejuízo nas relações e bem estar. OBJETIVOS: Este trabalho buscou investigar se há associação entre queixas e sintomas depressivos e a estação do ano em que pacientes buscam atendimento na área da saúde mental. MÉTODO: Foi realizado estudo transversal e documental com pacientes adultos e idosos em ambulatório transdisciplinar em Porto Alegre, RS. RESULTADOS: Não foi encontrada associação entre motivo de consulta, sintomas depressivos e a estação do ano. Apesar disto, associou-se faixa etária, renda familiar, sexo e fonte de encaminhamento à busca por atendimento psicoterápico em função de patologia depressiva. CONCLUSÕES: Apesar de não ter encontrado associação entre queixa e sintomatologia depressiva e a estação do ano em que o paciente buscou atendimento, esta pesquisa levantou dados pertinentes e importantes a serem considerados em futuros estudos sobre queixas e sintomas depressivos. .

Depression involves many losses in individuals’ lives. These can vary from the incapacity to work, relationship problems and harmed well-being. This study investigated if there is association between depressive symptoms and depressive complaints and the season in which patients seek care in a mental health institution. METHOD: We conducted a cross and documentary study with adult and elderly patients in outpatient multidisciplinary clinic in Porto Alegre, RS. RESULTS: No association was found between depressive complaint and depressive symptoms with the season. Despite this, the search for psychotherapy because of depressive disorder was associated with age, family income, sex and source of referral. CONCLUSIONS: Even not having found an association between abuse and depressive symptoms with the season in which the patient sought care, this study gathered relevant and important data to consider in future studies. .

Scores of a web-based version of the Seasonal Pattern Assessment Questionnaire in Brazil

Seasonal affective disorder (SAD) is a proposed mental disorder still controversial. This condition is prevalent in northern latitudes, but few studies have been conducted at locations in the southern hemisphere. It is usually assessed by the Seasonal Pattern Assessment Questionnaire (SPAQ). This study aimed to evaluate, through on-line questionnaire, the hypothesis that, in the Brazilian population, latitude and longitude influence SPAQ scores. Methods: An advertisement was posted on a sleep medicine website inviting visitors to investigate seasonal patterns of behavior and mood, using a Brazilian Portuguese version of the SPAQ. The geographic coordinates of the place of residence of each respondent were analyzed as a continuous variable or distributed in quartiles of latitude and longitude. The psychometric properties of the SPAQ were assessed by reliability and factor analyses. Results: Answers from 1001 respondents out of 1045 were considered eligible. High SPAQ scores were observed in 287 respondents, equally distributed among all latitude and longitude quartiles. Data collected in different seasons and during daylight saving time did not differ significantly in any of the scores for SPAQ dimensions. No correlations between SPAQ scores and latitude or longitude were observed. Psychometric properties of the SPAQ were preserved in all geographic locations. Conclusion: The finding of similar SPAQ scores at a wide latitude range defies the concept of SAD symptoms as latitude or longitude-dependent phenomena...

A Case of Bright Light Therapy in a Treatment Resistant Patient with Major Depressive Disorder / 신경정신의학

The light therapy has been known to be effective to non-seasonal affective disorder as well as seasonal affective disorder. Although the mechanism of action of light therapy for depressive disorder has not been verified yet, its clinical application revealed similar effects like antidepressants and relatively smaller side effects. However, it is not common to apply the light therapy for treatment resistant depressive disorder. This case report indicates a robust efficacy of light therapy and its clinical usefulness, illustrating the complete remission in a treatment resistant patient with major depressive disorder after bright light therapy.

Seasonal Affective Disorder.

Seasonal affective disorder is a combination of biologic and mood disturbances with a seasonal pattern, typically occurring in the autumn and winter with remission in the spring or summer. In a given year, about 5 percent of the U.S. population experiences seasonal affective disorder, with symptoms present for about 40 percent of the year. Although the condition is seasonally limited, patients may have significant impairment from the associated depressive symptoms. Treatment can improve these symptoms and also may be used as prophylaxis before the subsequent autumn and winter seasons. Light therapy is generally well tolerated, with most patients experiencing clinical improvement within one to two weeks after the start of treatment. To avoid relapse, light therapy should continue through the end of the winter season until spontaneous remission of symptoms in the spring or summer. Pharmacotherapy with antidepressants and cognitive behavior therapy are also appropriate treatment options and have been shown to be as effective as light therapy. Because of the comparable effectiveness of treatment options, first-line management should be guided by patient preference.

Association of the RORA Gene Polymorphism and Seasonal Variations in Mood and Behavior / 수면정신생리

OBJECTIVES: Several evidence has been suggested that the circadian gene variants contribute to the pathogenesis of seasonal affective disorder. In this study, we aimed to investigate the polymorphism in RORA (Retinoid-related orphan receptor A) gene in relation to seasonal variations among healthy young adults in Seoul, Korea. METHODS: A total of 507 young healthy adult subjects were recruited by advertisement. Seasonal variations were assessed by the Seasonality Pattern Assessment Questionnaire (SPAQ). Single-nucleotide polymorphism in the RORA rs11071547 gene was genotyped by PCR in 507 individuals. Considering summer type as confounding factor, we conducted analysis 478 subjects except 29 subjects of summer type. The Chi-square test was conducted to compare differences between groups of seasonals and non-seasonals. Association between genotypes and Global Seasonality Score (GSS) were tested using ANCOVA (Analysis of covariance). RESULTS: In this sample, the prevalence of SAD was 12.1% (winter type 9.3%, summer type 2.8%). There is no significant difference in genotyping distribution of RORA rs11071547 between groups of seasonals and non-seasonals. Global seasonality score (GSS) and scores of all subscales except body weight and appetite were not significantly different between the group with C allele homozygote and the group with T allele homozygote and heterozygote (p-value 0.138). Scores of body weight and appetite were significantly higher in group with C allele homozygotes. CONCLUSION: These results suggest that RORA gene polymorphism play a role in seasonal variations in appetite and body weight and is associated with susceptibility to seasonal affective disorder in some degree in the population studied.

Efecto de la variación estacional en el estado de ánimo de adolescentes, estudio prospectivo, Santiago / Relationship between the seasonal variation and the mood of adolescents: prospective study

Introducción: El Trastorno Afectivo Estacional (TAE) es caracterizado por síntomas depresivos que se manifiestan recurrentemente durante el invierno y ceden espontáneamente en primavera-verano. Existen pocos estudios sobre TAE en niños y adolescentes. Objetivo: Estudiar la relación entre la variación estacional” y el estado de ánimo en adolescentes. Metodología: Se realizó un estudio de cohorte prospectivo a 220 estudiantes de 1° Medio a 4° Medio de dos colegios de la Región Metropolitana de diferente nivel socioeconómico, elegidos al azar. A los estudiantes se les aplicó en invierno y en primavera 2008, Cuestionario de Depresión Infantil (CDI) y Cuestionario de Evaluación de Perfil Estacional versión para niños y adolescentes (SPAQ-CA). Resultados: La prevalencia de “Sospecha de Depresión”(SD) fue mayor en invierno(20 por ciento) que en primavera(13 por ciento) (p<0,01). La “Autopercepción de tener Problemas con la Variación Estacional” (APPVE) no varió significativamente entre los periodos encuestados. La APPVE fue 2,8 veces más frecuente en mujeres que en hombres(p<0,01). Se encontró una correlación positiva entre SD y APPVE, solo en invierno. Conclusión: En una misma población de adolescentes hay variación en el autoreporte de SD según la estación del año, siendo significativamente mayor en invierno. La variación estacional influye en el ánimo de los adolescentes encuestados, especialmente en mujeres, siguiendo el patrón descrito en la literatura.

Background: Seasonal affective disorder (SAD) is characterized by depressive symptoms that appear repeatedly in the winter and subside spontaneously in Spring-summer. There are few studies of SAD in children and adolescents. Objective: To study the relationship between the seasonal variation (SV) and the mood of adolescents. Methodology: A prospective cohort study of 220 high school students from two randomly chosen schools of different socioeconomic status in the metropolitan area of Santiago was conducted. Students were surveyed in winter and spring 2008 with the Childhood Depression Inventory (CDI) and Seasonal Pattern Assessment Questionnaire for Children and Adolescents (SPAQ-CA). Results: The prevalence of suspected depression (SD) was higher in winter (20 percent) than in spring (13 percent) (p <0.01). The perception of problems with seasonal variation (PPSV) did not differ significantly between surveys. The PPSV was 2.8 times higher in women than in men (p <0.01). We found a positive correlation between SD and PPSV only in winter. Conclusion: There is SV in adolescent self-reported SD, being higher in woman, following the pattern described in the literature.

Angiotensin-Converting Enzyme(ACE) Gene Polymorphism and Seasonal Variation in Mood and Behavior / 수면정신생리

OBJECTIVES: Angiotensin-converting enzyme (ACE) gene polymorphism has been reported to be associated with depression and therapeutic outcome in depression. The purpose of this study was to determine whether ACE gene polymorphism is associated with seasonal variation in mood and behavior in a young Korean college student sample. METHODS: 297 young Korean medical students were recruited in this study. All subjects were free of major medical and psychiatric problems. They were genotyped for the ACE gene polymorphism and evaluated the seasonal variation in mood and behavior by the Seasonality Pattern Assessment Questionnaire (SPAQ). RESULTS: Global Seasonality Score (GSS) of SPAQ between three genotypes were not different. However, comparison of the group that showed seasonality of mood and behavior during winter with the group that did not showed seasonality indicated significant difference in genotype distribution (chi-square=6.79, p=0.034). The D allele non-carrier (II genotype) frequency was significantly higher in winter seasonality group than non-seasonality group (chi-square=6.59, p=0.010; odds ratio [OR]=2.27, 95% confidence interval [CI] 1.20-4.28). CONCLUSION: These results suggest that the ACE gene polymorphism is related to winter-type seasonality in a Korean population.

Seasonal Variations in Mood and Behavior in Korean High School Students / 수면정신생리

OBJECTIVES: Although many reports have been written on seasonal variations in mood and behavior in foreign countries, few reports have dealt with Korean adolescents, except medical students. The goal of this study was to estimate the frequency of seasonal variations in mood and behavior among Korean high school students. METHODS: A total of 656 high school students living in southeastern Seoul participated in this study. The subjects were investigated with the Korean translated version of the Seasonal Pattern Assessment Questionnaire (SPAQ), and their responses were evaluated for seasonal patterns in mood and behavior change according to Kasper's criteria to make SAD (seasonal affective disorder) or SSAD (subclinical seasonal affective disorder) diagnosis. RESULTS: A total of 565 subjects completed the questionnaire and the responses (M: F=324: 241) were collected and used for analysis. The mean age was 16.73 (SD=0.65) years, and mean global seasonality score 5.88 (SD=4.72). Of the respondents, 413 (73.1%) reported problems related with seasonal changes. Total prevalence rates were 13.6% for SAD, 10.8% for S-SAD. The estimated frequencies were 5.1% for summer SAD, 3.2% for summer S-SAD, 0.5% for winter SAD and 1.1% for winter S-SAD. The prevalence rate of summer SAD or S-SAD was higher than winter SAD or S-SAD. CONCLUSION: The subjects showed a higher prevalence rate of summer type than winter type in SAD or S-SAD. These results were similar to those of other studies carried out in East Asian countries. However, the unpleasant feelings resulting from high temperature and humidity in summer rather than depression may have influenced the results. Therefore, it is necessary to make new SAD criteria of the SPAQ suitable for East Asian countries.

Seasonal Variations of Mood and Behavior in Korean Medical Students / 수면정신생리

OBJECTIVES: Although many studies on seasonal variations in mood and behavior have been carried out in foreign countries, no such study has previously been undertaken in Korea. The goal of this study was to estimate the frequency of seasonal variations in mood and behavior among Korean medical students. METHODS: 297 medical students from Korea University College of Medicine participated in this study. The subjects were surveyed with a Korean translation of the Seasonal Pattern Assessment Questionnaire (SPAQ), and their responses were evaluated for seasonal patterns of mood and behavioral change, including seasonal affective disorder (SAD) and subsyndromal seasonal affective disorder (S-SAD), derived from the case-finding criteria of Kasper et al. RESULTS: The mean global seasonality score was 6.6 (SD=3.6). 83.5% (N=248) of the subjects reported some changes in behavior and mood associated with the seasons. Only 3.7% (N=11) reported no behavioral changes across the seasons. Total prevalence rates were 15.2% for SAD, and 2.7% for S-SAD. The estimated frequencies were 3.0% for summer SAD, 2.7% for summer S-SAD, 11.4% for winter SAD, and 5.8% for winter S-SAD. The prevalence rates for winter SAD or S-SAD were higher than the prevalence rates for summer SAD or S-SAD. CONCLUSION: These results suggest that seasonal variations in mood and behavior are common among Koreans. The higher prevalence rate of winter SAD or S-SAD than summer SAD or S-SAD is consistent with most western studies and stands in contrasts to studies in other Asian countries, such as Japan and China.

A Case of Morning Light Treatment for a Depressive Episode with Seasonal Pattern / 신경정신의학

The authors identified a patient with typical seasonal affective disorder, characterized by recurrent depression in the winter with remission in the spring or summer. Many studies reported that bright light therapy was effective in seasonal affective disorder, but the mechanism of bright light therapy and the therapeutic parameters of light therapy including intensity, duration, timing are still debated. We treated the patient with morning light treatment using 2500lux light box, the clinical symptoms in this case were improved. The authors suggest that seasonal affective disorder can be effectively treated with morning light treatment.