Publications by authors named "Denda K"

The objective of this study was to reveal the effectiveness of repetitive transcranial magnetic stimulation (rTMS) for Japanese patients with treatment-resistant depression (TRD) in clinical practice, based on real-world data from a nationwide multicenter observational study in Japan. Clinical data of patients with TRD treated with rTMS (NeuroStar TMS treatment system) under public insurance coverage were retrospectively collected from 21 institutes nationwide between June 2019 and December 2023. Depression severity was assessed by the 17-item Hamilton Depression Rating Scale (HAMD-17).

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Background: Although numerous studies have been published on the predictors of COVID-19 vaccine hesitancy, some possible predictors remain underexplored. In this study, we explored the associations of unwillingness and indecisiveness regarding COVID-19 vaccination with generalized trust, mental health conditions such as depression and generalized anxiety, and fear of COVID-19.

Methods: Data of wave 1 (from October 27 till November 6, 2020) and wave 3 (from April 23 till May 6, 2021) of a longitudinal online study conducted in Japan were used for the analyses.

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The molecular evolution processes underlying the acquisition of the placenta in eutherian ancestors are not fully understood. Mouse NCK-interacting kinase (NIK)-related kinase (NRK) is expressed highly in the placenta and plays a role in preventing placental hyperplasia. Here, we show the molecular evolution of NRK, which confers its function for inhibiting placental cell proliferation.

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Background: Behaviors to avoid infection are key to minimizing casualties of the COVID-19 pandemic, as well as to avoid excessive interventions that are less effective. This study aims to identify behavioral patterns associated with SARS-CoV-2 infection in the real world.

Methods: A questionnaire-based cross-sectional study was conducted targeting a research panel of NTTCom Online Marketing Solutions Corporation or its affiliates.

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Nik-related kinase (Nrk) is a member of the germinal center kinase IV family and suppresses Akt signaling. In vivo, Nrk prevents placental hyperplasia and breast cancer formation. Here, we show that Nrk is regulated by the chaperone-dependent ubiquitin ligase carboxyl terminus of heat-shock protein (Hsp)70-interacting protein (CHIP).

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Objective: NRK is a unique X chromosome-linked protein kinase expressed predominantly in placenta. The gene knockout causes placental overgrowth and delayed labor of Nrk-null fetuses from dams in mouse. To clarify unknown mechanisms behind the Nrk-null phenotypes, protein expression profiles were analyzed in the Nrk-null placenta using a high-performance two-dimensional electrophoresis methodology.

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Introduction: Studies on autism spectrum disorder in recent years have controversially indicated similarities with schizophrenia. Cognitive dysfunction is present in both disorders, and while there is a rich array of interventions for cognitive dysfunction in schizophrenia, there are few such treatments for autism spectrum disorder. In this study, we have investigated a potentially useful approach in autism spectrum disorder by comparing autism spectrum disorder with schizophrenia in regard to the characteristics of cognitive dysfunction and therapeutic response to cognitive remediation therapy.

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The onset and/or growth of breast tumor are controlled, at least in part, by estrogen. Therefore, to prevent the development of breast tumor, estrogen-dependent proliferation of mammary epithelial cells during pregnancy needs to be suppressed once the mammary gland is fully developed to enable lactation. However, the underlying molecular mechanisms remain unknown.

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Objective: The cognitive features and treatment of autism spectrum disorder have been the subject of much debate in recent years. Therapeutic approaches to date have focused on skills acquisition, support tailored to the characteristics of autism spectrum disorder, and interventions in social cognitive functioning; there have been few reports describing interventions aimed at neurocognitive dysfunction. In this study, we focus on impairment of executive functioning in autism spectrum disorder patients and investigate improvements in executive functioning and their generalization to social functioning.

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The purpose of this study was to investigate factors associated with the psychological impact of the Great East Japan Earthquake on high school students 1 year and 4 months after the disaster, and clarify support needs of the students. In the outreach program for students of three high schools in coastal areas of southern Miyagi Prefecture, Japan, 1,973 students were surveyed after obtaining informed consent for participation. Questionnaires included: the Quick Inventory of Depressive Symptomatology (QIDS-J), Self-rating Anxiety Scale (SAS), Impact of Event Scale-revised (IES-R), and Connor-Davidson Resilience Scale (CD-RISC10).

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Ubiquitin-specific proteases (USPs) consist of a family of deubiquitinating enzymes with more than 50 members in humans. Three of them, including USP37, contain ubiquitin-interacting motifs (UIMs), an ∼20-amino acid α-helical stretch that binds to ubiquitin. However, the roles of the UIMs in these USP enzymes remain unknown.

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Background: The bipolar-unipolar distinction in patients with a major depressive episode is the most important issue related to the diagnosis and treatment of mood disorders, but remains unresolved. This study was undertaken to compare bipolar and unipolar depression on Rorschach testing using the Comprehensive System with reference to healthy Japanese controls.

Methods: Patients with bipolar or unipolar depression who had undergone the Rorschach test for routine clinical purposes were followed up naturalistically for a long period.

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The complete mechanism of labor induction in eutherian mammals remains unclear. Although important roles for the fetus and placenta in triggering labor have been proposed, no gene has been shown to be required in the fetus/placenta for labor induction. Here we show that Nrk, an X-linked gene encoding a Ser/Thr kinase of the germinal center kinase family, is essential in the fetus/placenta for labor in mice.

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The clinical features, course and outcome of mood disorders in childhood and adolescence are discussed. The most specific symptoms of major depressive disorder in childhood and adolescence are irritability, social withdrawal, and comorbidity. Depression is a chronic and recurrent condition.

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We report the first known case of anorexia nervosa (AN) with Marchiafava-Bignami Disease (MBD) that responded to high-dose intravenous corticosteroid administration. A 16-year-old Japanese female with AN was diagnosed with MBD after rapid weight loss. During the acute stage, she suffered from a sudden onset of coma.

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Concerning medical treatments for adult attention-deficit/hyperactivity disorder (AD/HD), case reports have gradually been accumulating on the efficacy of psychostimulants such as methylphenidate and amphetamine and selective noradrenaline reuptake inhibitors such as atomoxetine. However, patients intolerant to psychostimulants currently have a very limited range of treatments available to them. Here, we report a case of an adult AD/HD patient whose inattention and hyperactivity were remarkably alleviated by milnacipran, a serotonin noradrenaline reuptake inhibitor.

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Objective: The aim of this study was to investigate the prevalence of depressive symptoms in children and adolescents in the general Japanese population using a depression self-rating scale and determine whether this prevalence varies according to age, gender, or region.

Method: The Birleson Depression Self-Rating Scale for children (DSRS) was used to examine the extent to which depressive tendencies were present among 2,453 elementary and middle-school children (6 to 15 years old) in two cities in Japan.

Results: The mean DSRS score was high at 8.

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Previous investigations have suggested that ghrelin, an endogenous orexigenic peptide, is involved in the pathology of eating disorders. We conducted a study to determine whether any preproghrelin gene polymorphisms are associated with eating disorders. Three hundred thirty-six eating disorder patients, including 131 anorexia nervosa (AN)-restricting types (AN-R), 97 AN-binge eating/purging types (AN-BP) and 108 bulimia nervosa (BN)-purging types (BN-P), and 300 healthy control subjects participated in the study.

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Background: The long-term outcome of antidepressant-refractory depression is not well known. Therefore, the present study investigated the long-term outcome of 26 antidepressant-refractory patients with depression, whom we had studied and treated in 1995.

Methods: Before being classified as nonresponse, these patients had been treated adequately with at least two tricyclic or heterocyclic antidepressants (a minimum of the equivalent of 150 mg of imipramine for 4 weeks).

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Objective: To examine the relative importance of risk factors associated with depressive symptoms and gender differences in exposure to the risk factors among the elderly persons living in the community.

Methods: The data came from the Minamifurano-town Aging Study, a community-based sample of non-institutionalized elderly persons aged 65 years or older. Of the 731 eligible subjects, 665 were assessed for four domains of the potential risk factors (demographic characteristics, health and disability, stress, and social networks) and depressive symptoms according to the 30-item Geriatric Depression Scale (GDS).

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Background: Delirium is an organic psychiatric syndrome characterized by fluctuating consciousness and impaired cognitive functioning. High-potency typical neuroleptics have traditionally been used as first-line drugs in the treatment of delirium. However, these drugs are frequently associated with undesirable adverse events including extrapyramidal symptoms (EPS).

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