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Taito Hayashida,1,2 Akiyoshi Shimura,2 Motoki Higashiyama,2 Yota Fujimura,1 Kotaro Ono,2 Takeshi Inoue2 1Department of Psychiatry, Tokyo Medical University Hachioji Medical Center, Hachioji-shi, Tokyo, 193-0998, Japan; 2Department of Psychiatry, Tokyo Medical University, Shinjuku-ku, Tokyo,160-0023, JapanCorrespondence: Akiyoshi ShimuraDepartment of Psychiatry, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, JapanTel +81-3-3342-6111Fax +81-3-3340-4499Email sim@tokyo-med.ac.jpBackground: Presenteeism is the loss of work productivity of workers owing to physical and mental problems, and its socioeconomic effects are greater than those of absenteeism. Presenteeism is caused by psychological and physical dysfunctions. On the other hand, the regularity of mealtimes is an important factor associated with physical and mental health conditions. We hence assessed the association among the irregularity of mealtimes, presenteeism, psychological and physical stress responses, and sleep disturbance in office workers in companies.Methods: From May to December 2017, the data of 2905 participants who had given their consent to use their information for academic purposes, and answered a questionnaire about the survey and their lifestyle were collected. Path analysis was performed to analyze the association between the irregularity of mealtimes, psychosomatic symptoms (Brief Job Stress Questionnaire), sleep disturbance (Pittsburgh Sleep Questionnaire), and presenteeism (Work Limitations Questionnaire).Results: The direct effect of the irregularity of mealtimes on presenteeism was significant but weak. However, the irregularity of mealtimes had a strong effect on presenteeism indirectly through psychological and physical stress responses and sleep disturbance.Conclusion: Psychological and physical stress responses and sleep disturbance were identified as mediating factors of the effects of irregularity of mealtimes on presenteeism.Keywords: presenteeism, Work Limitations Questionnaire, WLQ, mealtimes, sleep disturbance, stress reaction, mediating effect

Motoki Higashiyama,1 Taito Hayashida,1 Keisuke Sakuta,1 Yota Fujimura,2 Jiro Masuya,3 Masahiko Ichiki,1 Hajime Tanabe,4 Ichiro Kusumi,5 Takeshi Inoue11Department of Psychiatry, Tokyo Medical University, Tokyo 160-0023, Japan; 2Department of Psychiatry, Tokyo Medical University Hachioji Medical Center, Tokyo 193-0998, Japan; 3Department of Psychiatry, Tokyo Medical University Ibaraki Medical Center, Ibaraki 300-0395, Japan; 4Department of Clinical Human Sciences, Graduate School of Humanities and Social Sciences, Shizuoka University, Shizuoka 422-8529, Japan; 5Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, JapanCorrespondence: Takeshi InoueDepartment of Psychiatry, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo 160-0023, JapanTel +81 33 342 6111Fax +81 33 340 4499Email tinoue@tokyo-med.ac.jpBackground: How subjective social status is associated with childhood abuse and affective temperament in the mechanism of depressive symptom exacerbation remains unknown. In this study, we investigated how the complex effects of subjective social status, childhood abuse, and affective temperament influence depressive symptoms in adulthood.Methods: Self-report questionnaires were distributed to 853 adult volunteers between January and August 2014. Of them, 404 people gave full consent and returned complete anonymous responses. The following five questionnaires were analyzed: demographic information, Patient Health Questionnaire-9, subjective social status, Child Abuse and Trauma Scale, and Temperament Evaluation of Memphis, Pisa, Paris and San Diego autoquestionnaire. The associations between the scores were analyzed by structural equation modeling. This study was conducted with approval from the ethics committees of Tokyo Medical University and Hokkaido University Hospital.Results: Covariance structure analysis demonstrated that childhood abuse and subjective social status did not have a direct effect on adulthood depressive symptoms. Childhood abuse had direct effects on subjective social status and affective temperament and childhood abuse indirectly affected adulthood depressive symptoms through subjective social status and affective temperament. Subjective social status also affected depressive symptoms through an effect on affective temperament. This model explained 43% of the variability in depressive symptoms and the fitness of this model was good.Conclusion: Regarding childhood abuse and adulthood depressive symptoms, subjective social status as well as affective temperament may be mediators. The results of this study are expected to contribute to the elucidation of the mechanism of depression.Keywords: childhood abuse, subjective social status, affective temperament, depression, covariance structure analysis

Ryosuke Kitahata,1 Shinichiro Nakajima,1–4 Hiroyuki Uchida,1,3 Tetsu Hayashida,5 Maiko Takahashi,5 Shintaro Nio,1 Jinichi Hirano,1 Maki Nagaoka,1 Takefumi Suzuki,1 Hiromitsu Jinno,6 Yuko Kitagawa,5 Masaru Mimura1 1Psychopharmacology Research Program, Department of Neuropsychiatry, School of Medicine, Keio University, Tokyo, Japan; 2Multimodal Imaging Group – Research Imaging Centre, 3Geriatric Mental Health Division, Centre for Addiction and Mental Health, 4Department of Psychiatry, University of Toronto, Toronto, Canada; 5Department of Surgery, School of Medicine, Keio University, 6Department of Surgery, School of Medicine, Teikyo University, Tokyo, Japan Purpose: The purpose of the study was to evaluate subjective (self-rated), family-rated, and objective (researcher-rated) cognitive functions in patients with breast cancer after chemotherapy.Method: We conducted a prospective study to trace self-rated cognitive functions in 30 patients with breast cancer at the completion of chemotherapy (T0) and 6 months later (T1). Subjective cognitive functions were assessed with Cognitive Failures Questionnaire (CFQ), Dysexecutive Questionnaire (DEX-S), and Everyday Memory Checklist (EMC-S) for attention, executive function, and episodic memory, respectively. Their family members also completed DEX-I and EMC-I for executive function and episodic memory, respectively. We also examined objective cognitive functions. Self-rated cognitive functions were compared with the normative data. They were compared between T0 and T1. We calculated correlation coefficients between self-rated and other cognitive functions.Results: At T0, 6 (20.0%) and 2 (6.7%) participants showed higher DEX-S and EMC-S scores than the normative data, respectively, while no participant had abnormal CFQ scores. At T1, DEX-S and EMC-S scores were normalized in 3 (50.0%) and 2 (100.0%) participants, respectively. No participant showed increases in CFQ scores. No changes were found in objective cognitive functions from T0 to T1. DEX-S and DEX-I or EMC-S and EMC-I scores were correlated at both T0 and T1, which did not survive multiple corrections. There was no association between subjective and objective cognitive functions.Conclusion: Impairments in subjective cognition may be transient after chemotherapy in patients with breast cancer. Furthermore, patients and their families appear to share similar prospects on their cognitive functions. Keywords: breast cancer, chemotherapy, subjective cognitive functions

The protein RanBP2, which binds to the nuclear G protein Ran/TC4, contains 3,224 residues and is comprised of a leucine-rich amino-terminal region, four domains homologous to RanBP1, eight zinc-finger motifs and a carboxy terminus similar to cyclophilin. Studies show that RanBP2 is a part of the nuclear pore complex and is probably present on both sides of the pore. Ran/TC4 is necessary for the import of proteins containing NLS.