861 research outputs found

    The relationship between time perspective and subjective well-being of older adults

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    Time perspective is crucial for our present and future plans, and for the way we act in the present. The aim of this study was to investigate the relationship between time perspective and subjective well-being in older adults. The sample of our questionnaire study consisted of 149 older adults aged between 65 and 96 years. Time perspective was measured with the Zimbardo Time Perspective Inventory. The five time perspective dimensions were related to four specific aspects of subjective well-being (positive affect, negative affect, life satisfaction and depression). Future-oriented older persons had a more positive affect. Older adults who were positively oriented towards the past appeared to be more satisfied with life. A hedonistic view of the present was related to a high positive affect:Older persons with a Past-Negative perspective were more likely to experience negative affect and depressive feelings, along with a lower level of positive affect and satisfaction with life. The Present-Fatalistic time perspective correlated with more depressive symptoms. The findings emphasize the relevance of time perspective styles for the subjective well-being, which has specific implications for the way caregivers could interact with older adults to enhance quality of life

    Is there a neuroanatomical basis of the vulnerability to suicidal behavior?: a coordinate-based meta-analysis of structural and functional MRI studies

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    Objective: We conducted meta-analyses of functional and structural neuroimaging studies comparing adolescent and adult individuals with a history of suicidal behavior and a psychiatric disorder to psychiatric controls in order to objectify changes in brain structure and function in association with a vulnerability to suicidal behavior. Methods: Magnetic resonance imaging studies published up to July 2013 investigating structural or functional brain correlates of suicidal behavior were identified through computerized and manual literature searches. Activation foci from 12 studies encompassing 475 individuals, i.e., 213 suicide attempters and 262 psychiatric controls were subjected to meta-analytical study using anatomic or activation likelihood estimation (ALE). Result: Activation likelihood estimation revealed structural deficits and functional changes in association with a history of suicidal behavior. Structural findings included reduced volumes of the rectal gyrus, superior temporal gyrus and caudate nucleus. Functional differences between study groups included an increased reactivity of the anterior and posterior cingulate cortices. Discussion: A history of suicidal behavior appears to be associated with (probably interrelated) structural deficits and functional overactivation in brain areas, which contribute to a decision-making network. The findings suggest that a vulnerability to suicidal behavior can be defined in terms of a reduced motivational control over the intentional behavioral reaction to salient negative stimuli

    Severe congenital microcephaly with AP4M1 mutation, a case report

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    Background: Autosomal recessive defects of either the B1, E1, M1 or S1 subunit of the Adaptor Protein complex-4 (AP4) are characterized by developmental delay, severe intellectual disability, spasticity, and occasionally mild to moderate microcephaly of essentially postnatal onset. Case presentation: We report on a patient with severe microcephaly of prenatal onset, and progressive spasticity, developmental delay, and severe intellectual deficiency. Exome sequencing showed a homozygous mutation in AP4M1, causing the replacement of an arginine by a stop codon at position 338 of the protein (p.Arg338X). The premature stop codon truncates the Mu homology domain of AP4M1, with predicted loss of function. Exome analysis also showed heterozygous variants in three genes, ATR, MCPH1 and BLM, which are known causes of autosomal recessive primary microcephaly. Conclusions: Our findings expand the AP4M1 phenotype to severe microcephaly of prenatal onset, and more generally suggest that the AP4 defect might share mechanisms of prenatal neuronal depletion with other genetic defects of brain development causing congenital, primary microcephaly

    Accelerated intermittent theta burst stimulation for suicide risk in therapy-resistant depressed patients : a randomized, sham-controlled trial

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    Objectives: We aimed to examine the effects and safety of accelerated intermittent Theta Burst Stimulation (iTBS) on suicide risk in a group of treatment-resistant unipolar depressed patients, using an extensive suicide assessment scale. Methods: In 50 therapy-resistant, antidepressant-free depressed patients, an intensive protocol of accelerated iTBS was applied over the left dorsolateral prefrontal cortex (DLPFC) in a randomized, sham-controlled crossover design. Patients received 20 iTBS sessions over 4 days. Suicide risk was assessed using the Beck Scale of Suicide ideation (BSI). Results: The iTBS protocol was safe and well tolerated. We observed a significant decrease of the BSI score over time, unrelated to active or sham stimulation and unrelated to depression-response. No worsening of suicidal ideation was observed. The effects of accelerated iTBS on mood and depression severity are reported in Duprat et al. (2016). The decrease in suicide risk lasted up to 1 month after baseline, even in depression non-responders. Conclusions: This accelerated iTBS protocol was safe. The observed significant decrease in suicide risk was unrelated to active or sham stimulation and unrelated to depression response. Further sham-controlled research in suicidal depressed patients is necessary. (Clinicaltrials.gov identifier: NCT01832805)

    THE ACUTE EFFECTS OF ACCELERATED REPETITIVE TRANSCRANIAL MAGNETIC STIMULATION ON SUICIDE RISK IN UNIPOLAR DEPRESSION: PRELIMINARY RESULTS

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    Background: Suicide is a major health concern. Effective acute interventions are lacking. Recent studies have suggested an acute decrease of suicidal ideations following repetitive Transcranial Magnetic Stimulation (rTMS). However, placebo effects could not be excluded. We aimed to evaluate the acute effect of accelerated intermittent theta burst stimulation (TBS) on suicide risk in depression. Subjects and methods: In 12 suicidal therapy-resistant depressed patients accelerated intermittent TBS was delivered on the left dorsolateral prefrontal cortex in a randomized, sham-controlled cross-over fashion. Patients received 20 sessions spread over 4 days. The change in severity of suicidal ideation was measured by the Beck Scale of Suicidal Ideation (SSI) before and after treatment. Results: We found a significant decrease of SSI score over time; unrelated to active or sham stimulation. Furthermore, the attenuation of suicidal thinking was not merely related to depression severity changes caused by TBS. Conclusions: Accelerated TBS treatment in depressed suicidal patients was found to be safe and well tolerated and may have the potential to acutely decrease suicidal ideations. However, the efficacy compared to sham has not yet been proven and further shamcontrolled research including longer follow-up is needed to substantiate these preliminary findings

    Synthesis and properties of 35S, 14C and 3H labeled S-alkyl glycerol ethers and derivatives

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    Radioactive S-alkyl glycerol ethers have been synthesized with 35S, 14C and 3H labels as well as 3H/35S double labels.The synthesized compounds were converted to various derivatives which can serve to characterize the S-alkyl glycerol ethers. These included the isopropChemical analysis, IR, NMR, zonal TLC profile scans and GLC showed all the products to be > 99% pure.The GLC behaviour of the aldehyde and acetate derivatives of both S-alkyl glycerol ethers and O-alkyl glycerol ethers on EGSS-X was compared.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/21737/1/0000130.pd

    Postscript relating to new allegations made by Edward Hooper at The Royal Society Discussion Meeting on 11 September 2000

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    At The Royal Society Discussion Meeting, Origins of HIV and the AIDS epidemic, which this issue records, Edward Hooper added two new`smoking guns' to the accusations published previously in The river. These were proposed as conclusive evidence for the hypothesis that simian immunode¢ciency viruscontaminated CHAT polio vaccine caused the HIV-1 group M epidemic. We have investigated the facts in relation to these`smoking guns'
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