My Hand or Yours? Markedly Different Sensitivity to Egocentric and Allocentric Views in the Hand Laterality Task

In the hand laterality task participants judge the handedness of visually presented stimuli – images of hands shown in a variety of postures and views - and indicate whether they perceive a right or left hand. The task engages kinaesthetic and sensorimotor processes and is considered a standard example of motor imagery. However, in this study we find that while motor imagery holds across egocentric views of the stimuli (where the hands are likely to be one's own), it does not appear to hold across allocentric views (where the hands are likely to be another person's). First, we find that psychophysical sensitivity, d', is clearly demarcated between egocentric and allocentric views, being high for the former and low for the latter. Secondly, using mixed effects methods to analyse the chronometric data, we find high positive correlation between response times across egocentric views, suggesting a common use of motor imagery across these views. Correlations are, however, considerably lower between egocentric and allocentric views, suggesting a switch from motor imagery across these perspectives. We relate these findings to research showing that the extrastriate body area discriminates egocentric (‘self’) and allocentric (‘other’) views of the human body and of body parts, including hands

Comparative analysis of the shape and size of the middle ear cavity of turtles reveals no correlation with habitat ecology

The middle ear of turtles differs from other reptiles in being separated into two distinct compartments. Several ideas have been proposed as to why the middle ear is compartmentalized in turtles, most suggesting a relationship with underwater hearing. Extant turtle species span fully marine to strictly terrestrial habitats, and ecomorphological hypotheses of turtle hearing predict that this should correlate with variation in the structure of the middle ear due to differences in the fluid properties of water and air. We investigate the shape and size of the air‐filled middle ear cavity of 56 extant turtles using 3D data and phylogenetic comparative analysis to test for correlations between habitat preferences and the shape and size of the middle ear cavity. Only weak correlations are found between middle ear cavity size and ecology, with aquatic taxa having proportionally smaller cavity volumes. The middle ear cavity of turtles exhibits high shape diversity among species, but we found no relationship between this shape variation and ecology. Surprisingly, the estimated acoustic transformer ratio, a key functional parameter of impedance‐matching ears in vertebrates, also shows no relation to habitat preferences (aquatic/terrestrial) in turtles. We suggest that middle ear cavity shape may be controlled by factors unrelated to hearing, such as the spatial demands of surrounding cranial structures. A review of the fossil record suggests that the modern turtle ear evolved during the Early to Middle Jurassic in stem turtles broadly adapted to freshwater and terrestrial settings. This, combined with our finding that evolutionary transitions between habitats caused only weak evolutionary changes in middle ear structure, suggests that tympanic hearing in turtles evolved as a compromise between subaerial and underwater hearing

The prevalence of suicidal ideation identified by the Edinburgh Postnatal Depression Scale in postpartum women in primary care: findings from the RESPOND trial

<p>1 Abstract</p> <p>1.1 Background</p> <p>Suicide is a leading cause of perinatal maternal deaths in industrialised countries but there has been little research to investigate prevalence or correlates of postpartum suicidality. The Edinburgh Postnatal Depression Scale is widely used in primary and maternity services to screen for perinatal depressive disorders, and includes a question on suicidal ideation (question 10). We aimed to investigate the prevalence, persistence and correlates of suicidal thoughts in postpartum women in the context of a randomised controlled trial of treatments for postnatal depression.</p> <p>1.2 Methods</p> <p>Women in primary care were sent postal questionnaires at 6 weeks postpartum to screen for postnatal depression before recruitment into an RCT. The Edinburgh Postnatal Depression Scale (EPDS) was used to screen for postnatal depression and in those with high levels of symptoms, a home visit with a standardised psychiatric interview was carried out using the Clinical Interview Schedule-Revised version (CIS-R). Other socio-demographic and clinical variables were measured, including functioning (SF12) and quality of the marital relationship (GRIMS). Women who entered the trial were followed up for 18 weeks.</p> <p>1.3 Results</p> <p>9% of 4,150 women who completed the EPDS question relating to suicidal ideation reported some suicidal ideation (including hardly ever); 4% reported that the thought of harming themselves had occurred to them sometimes or quite often. In women who entered the randomised trial and completed the EPDS question relating to suicidal ideation (n = 253), suicidal ideation was associated with younger age, higher parity and higher levels of depressive symptoms in the multivariate analysis. Endorsement of 'yes, quite often' to question 10 on the EPDS was associated with affirming at least two CIS-R items on suicidality. We found no association between suicidal ideation and SF-12 physical or mental health or the EPDS total score at 18 weeks.</p> <p>1.4 Conclusions</p> <p>Healthcare professionals using the EPDS should be aware of the significant suicidality that is likely to be present in women endorsing 'yes, quite often' to question 10 of the EPDS. However, suicidal ideation does not appear to predict poor outcomes in women being treated for postnatal depression.</p> <p>Trial registration</p> <p>Current Controlled Trials <a href="http://www.controlled-trials.com/ISRCTN16479417">ISRCTN16479417</a>.</p

Óbitos e internações por tuberculose não notificados no município do Rio de Janeiro

OBJETIVO: Analisar a subnotificação de óbitos e internações por tuberculose no Sistema de Informação de Agravos de Notificação (Sinan). MÉTODOS: Foram selecionados os óbitos do Sistema de Informação sobre Mortalidade (SIM) com tuberculose como causa básica ou associada e as internações do Sistema de Informações Hospitalares do Sistema Único de Saúde (SIH/SUS) com causa principal ou secundária tuberculose de residentes no município do Rio de Janeiro em 2004. Foi realizada associação probabilística das bases de dados do SIM e SIH-SUS com a do Sinan, referentes aos anos de 2002 a 2004. RESULTADOS: Dos 542 óbitos por tuberculose no período, 234 (43,2%) não foram registrados no Sinan nos dois anos anteriores. Das 1.079 internações, 238 (22,1%) não foram notificadas. Foram relacionados às internações 71 óbitos: 47 ocorreram durante a internação por tuberculose, 24 após a internação. Sete não foram notificados no Sinan. Os idosos tiveram 1,6 vez (IC95% 1,074;2,516) a chance de não notificação dos mais jovens, e pessoas com nível superior ou mais escolaridade tiveram 3,6 vezes a chance (IC95% 1,384;11,022) daqueles com nenhum ano de estudo de não serem notificadas. Os menores de 15 anos tiveram 4,8 vezes a chance (IC95% 2,757;8,452) de não notificação daqueles entre 15 e 59 anos. Algumas divisões regionais de saúde apresentaram percentual de óbitos não notificados acima de 50% e esse percentual variou entre 37,8% e 12,7% para internações. CONCLUSÕES: Os dados sugerem problemas na detecção de casos e apontam barreiras de acesso ao tratamento oportuno e adequado e falhas na qualidade do sistema de informação, com diferenças entre as regiões do município.OBJETIVO: Analizar la subnotificación de óbitos e internaciones por tuberculosis en el Sistema de Información de Agravios de Notificación (Sinan). MÉTODOS: Se seleccionaron los óbitos del Sistema de Información sobre Mortalidad (SIM) con causa básica o asociada a tuberculosis y las internaciones del Sistema de Informaciones Hospitalarias del Sistema Único de Salud con causa principal o secundaria tuberculosis de residentes en el municipio de Rio de Janeiro (Sureste de Brasil) en 2004. Se realizó asociación probabilística de las bases de datos del SIM y SIH-SUS con la del Sinan, referentes a los años de 2002 a 2004. RESULTADOS: De los 542 óbitos por tuberculosis en el período, 234 (43,2%) no fueron registrados en el Sinan en los dos años anteriores. De las 1.079 internaciones, 238 (22,1%) no fueron notificadas. Se relacionaron a las internaciones 71 óbitos: 47 durante la internación por tuberculosis, 24 posterior a la internación. Siete no fueron notificados en el Sinan. Los ancianos presentaron 1,6 veces (IC 95% 1,074;2,516) la probabilidad de no notificación con relación a los más jóvenes, y personas con nivel superior o más de escolaridad presentaron 3,6 veces la probabilidad (IC 95% 1,384;11,022) de no ser notificados con relación a los que no tenían ningún año de estudio. Los menores de 15 años reflejaron 4,8 veces la probabilidad (IC 95% 2,757;8,452) de no notificación con respecto a los que tenían de 15 a 59 años. Algunas divisiones regionales de salud presentaron porcentaje de óbitos no notificados por encima del 50% y ese porcentaje varió entre 37,8% a 12,7% para internaciones. CONCLUSIONES: Los datos sugieren problemas en la detección de casos y apuntan barreras de acceso al tratamiento oportuno y adecuado y fallas en la calidad del sistema de información, con diferencias entre las regiones del municipio.OBJECTIVE: To analyze underreporting of deaths and hospital admissions from tuberculosis to the Information System for Notifiable Diseases (SINAN). METHODS: Cases with tuberculosis as basic or associated cause of death were selected from the Brazilian Mortality Information System (SIM) and hospital admissions for tuberculosis as main or secondary cause from the Hospital Information System of the Brazilian Unified Health System (SIH-SUS), for residents in the municipality of Rio de Janeiro in 2004. Probabilistic record linkage was carried out between the SIM and SIH-SUS databases and the SINAN for the years 2002 to 2004. RESULTS: Out of the 542 deaths from tuberculosis in the period, 234 (43.2%) were not registered in the SINAN for the two previous years. As for the 1,079 admissions, 238 (22.1%) failed to be notified. Seventy-one deaths were related to these admissions: 47 were registered out of the SIH-SUS by death, 24 occurred after discharge and seven remained unnotified in the SINAN. The elderly were 1.6 times (95%CI 1.074;2.516) less likely to be notified than younger patients, and those with at least a college education were 3.6 times (95%CI 1.384;11.022) less likely to be notified than those with no formal education. Patients under 15 were 4.8 times (95%CI 2.757;8.452) less likely to be notified than those aged between 15 and 59 years. Some regional health administration divisions showed a percentage of unnotified deaths of over 50% and this percentage ranged from 37.8% to 12.7% for hospital admissions. CONCLUSIONS: The data suggest problems in the detection of cases and point to obstacles in adequate and timely treatment, as well as to quality flaws in the information system, with differences among regions in the municipality

Differential and converging molecular mechanisms of antidepressants' action in the hippocampal dentate gyrus

Major depression is a highly prevalent, multidimensional disorder. Although several classes of antidepressants (ADs) are currently available, treatment efficacy is limited, and relapse rates are high; thus, there is a need to find better therapeutic strategies. Neuroplastic changes in brain regions such as the hippocampal dentate gyrus (DG) accompany depression and its amelioration with ADs. In this study, the unpredictable chronic mild stress (uCMS) rat model of depression was used to determine the molecular mediators of chronic stress and the targets of four ADs with different pharmacological profiles (fluoxetine, imipramine, tianeptine, and agomelatine) in the hippocampal DG. All ADs, except agomelatine, reversed the depression-like behavior and neuroplastic changes produced by uCMS. Chronic stress induced significant molecular changes that were generally reversed by fluoxetine, imipramine, and tianeptine. Fluoxetine primarily acted on neurons to reduce the expression of pro-inflammatory response genes and increased a set of genes involved in cell metabolism. Similarities were found between the molecular actions and targets of imipramine and tianeptine that activated pathways related to cellular protection. Agomelatine presented a unique profile, with pronounced effects on genes related to Rho-GTPase-related pathways in oligodendrocytes and neurons. These differential molecular signatures of ADs studied contribute to our understanding of the processes implicated in the onset and treatment of depression-like symptoms.Patricia Patricio, Antonio Mateus-Pinheiro, Monica Morais, and Nuno Dinis Alves received fellowships from the Portuguese Foundation for Science and Technology (FCT). Michal Korostynski and Marcin Piechota were funded by the POIG De-Me-Ter 3.1 and NCN 2011/03/D/NZ3/01686 grants. This study was co-funded by the Life and Health Sciences Research Institute (ICVS) and ON. 2-O NOVO NORTE-North Portugal Regional Operational Programme 2007/2013, of the National Strategic Reference Framework (NSRF) 2007/ 2013, through the European Regional Development Fund (ERDF) and by the SwitchBox Consortium (Contract FP7-Health-F2-2010-259772 from the European Union). The authors declare no conflict of interest

Decorin and TGF-β(1 )polymorphisms and development of COPD in a general population

BACKGROUND: Decorin, an extracellular matrix (ECM) proteoglycan, and TGF-β(1 )are both involved in lung ECM turnover. Decorin and TGF-β(1 )expression are decreased respectively increased in COPD lung tissue. Interestingly, they act as each other's feedback regulator. We investigated whether single nucleotide polymorphisms (SNPs) in decorin and TGF-β(1 )underlie accelerated decline in FEV(1 )and development of COPD in the general population. METHODS: We genotyped 1390 subjects from the Vlagtwedde/Vlaardingen cohort. Lung function was measured every 3 years for a period of 25 years. We tested whether five SNPs in decorin (3'UTR and four intron SNPs) and three SNPs in TGF-β(1 )(3'UTR rs6957, C-509T rs1800469 and Leu10Pro rs1982073), and their haplotypes, were associated with COPD (last survey GOLD stage = II). Linear mixed effects models were used to analyze genotype associations with FEV(1 )decline. RESULTS: We found a significantly higher prevalence of carriers of the minor allele of the TGF-β(1 )rs6957 SNP (p = 0.001) in subjects with COPD. Additionally, we found a significantly lower prevalence of the haplotype with the major allele of rs6957 and minor alleles for rs1800469 and rs1982073 SNPs in TGF-β(1 )in subjects with COPD (p = 0.030), indicating that this association is due to the rs6957 SNP. TGF-β(1 )SNPs were not associated with FEV(1 )decline. SNPs in decorin, and haplotypes constructed of both TGF-β(1 )and decorin SNPs were not associated with development of COPD or with FEV(1 )decline. CONCLUSION: Our study shows for the first time that SNPs in decorin on its own or in interaction with SNPs in TGF-β(1 )do not underlie the disturbed balance in expression between these genes in COPD. TGF-β(1 )SNPs are associated with COPD, yet not with accelerated FEV(1 )decline in the general population

Genetic variation in TIMP1 but not MMPs predict excess FEV1 decline in two general population-based cohorts

BACKGROUND: An imbalance in matrix metalloproteases (MMPs) and tissue inhibitors of MMPs (TIMPs) contributes to chronic obstructive pulmonary disease (COPD) development. Longitudinal studies investigating Single Nucleotide Polymorphisms (SNPs) in MMPs and TIMPs with respect to COPD development and lung function decline in the general population are lacking. METHODS: We genotyped SNPs in MMP1 (G-1607GG), MMP2 (-1306 C/T), MMP9 (3 tagging SNPs), MMP12 (A-82G and Asn357Ser) and TIMP1 (Phe124Phe and Ile158Ile) in 1390 Caucasians with multiple FEV1 measurements from a prospective cohort study in the general population. FEV1 decline was analyzed using linear mixed effect models adjusted for confounders. Analyses of the X-chromosomal TIMP1 gene were stratified according to sex. All significant associations were repeated in an independent general population cohort (n=1152). RESULTS: MMP2 -1306 TT genotype carriers had excess FEV1 decline (-4.0 ml/yr, p=0.03) compared to wild type carriers. TIMP1 Ile158Ile predicted significant excess FEV1 decline in both males and females. TIMP1 Phe124Phe predicted significant excess FEV1 decline in males only, which was replicated (p=0.10) in the second cohort. The MMP2 and TIMP1 Ile158Ile associations were not replicated. Although power was limited, we did not find associations with COPD development. CONCLUSIONS: We for the first time show that TIMP1 Phe124Phe contributes to excess FEV1 decline in two independent prospective cohorts, albeit not quite reaching conventional statistical significance in the replication cohort. SNPs in MMPs evidently do not contribute to FEV1 decline in the general population

IDENTIFICATION OF SANDFLIES (Diptera: Psychodidae: Phlebotominae) BLOOD MEALS IN AN ENDEMIC LEISHMANIASIS AREA IN BRAZIL

SUMMARY The aim of this study was to identify blood meals of female sandflies captured in the municipality of Governador Valadares, an endemic area of visceral and cutaneous leishmaniasis, in the State of Minas Gerais, Brazil. From May 2011 to January 2012, captures were performed using HP light traps in four districts. There were 2,614 specimens (2,090 males and 524 females) captured; 97 engorged females were identified belonging to the species Lutzomyia longipalpis (82.1%) and Lutzomyia cortelezzii (17.9%). Considering simple and mixed feeding, the enzyme-linked immunosorbent assay revealed a predominance of chicken blood (43.6%) in Lutzomyia longipalpis, showing the important role that chickens exert around the residential areas of Governador Valadares. This finding increases the chances of sandflies contact with other vertebrates and consequently the risk of leishmaniasis transmission