26
|
Foltyn P, Rihm LK, Ribeiro D, Silva A, Weigand B. Measurement of the lamella thickness during droplet impact onto differently wettable smooth surfaces using an extension of the LASER Pattern Shift Method with naturally occurring patterns. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2021; 92:105111. [PMID: 34717431 DOI: 10.1063/5.0060407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/30/2021] [Indexed: 06/13/2023]
Abstract
This study shows that the LASER Pattern Shift Method (LPSM) is a powerful measurement technique for film thickness measurements. In this paper, the approach of the LPSM is extended, which is now able to measure the lamella thickness during droplet impacts on smooth surfaces using the naturally occurring air bubble shadows. With the help of this rather new measurement technique, the influence of different experimental parameters on the lamella thickness could be systematically assessed, e.g., the influence of impact velocity, liquid properties, and surface wettability. Upon comparing the obtained results to an analytical correlation in the literature, good agreement could be found for its validity range.
Collapse
|
27
|
Ricardo E, da Silva F, Heuraux S, Silva A. On the edge turbulence effects on the density profile reconstruction using O-mode reflectometers. FUSION ENGINEERING AND DESIGN 2021. [DOI: 10.1016/j.fusengdes.2021.112652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
28
|
Brites G, Ferreira I, Silva A, Carrascal M, Vitorino C, Neves B, Cruz M. Prevention of allergic contact dermatitis, myth or reality? Avoiding contact allergens: from basic research to development of a new medical device. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00508-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
29
|
Silva A, Gonçalves F. 1516P Core variables for managed entry agreements, regarding clinical outcomes and patient reported measures, in cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
30
|
Donadeo A, Politi P, Silva A, Civardi S, Farinella E, Brondino N, Olivola M, Sommi F, Damiani S. Correlation profiles between interoception and exteroception in psychotic patients versus healthy controls. Eur Psychiatry 2021. [PMCID: PMC9475798 DOI: 10.1192/j.eurpsy.2021.1430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Individual abilities to perceive internal and external sensations are defined respectively as interoception and exteroception: the dysregulation of these functions can explain many psychotic symptoms. (Ardizzi et al. 2016) Objectives We evaluated the differences in the interoceptive and exteroceptive perception between 39 patients with psychosis and 250 healthy controls using self-administered questionnaires. The association between interoception and exteroception in the two groups was also tested. Methods The tests we used are AASP (Adolescent / Adult Sensory Profile) and MAIA (Multidimensional Assessment of Interoceptive Awareness). Differences were measured with t-tests, associations with spearman’s correlation. Results Significant differences emerged between the two samples in the AASP total score and in its Low registration (LR) and Sensory Avoiding (SA) sub-scales and in the MAIA total score and in all its sub-scales except “Not Worrying” (Fig.1). Different patterns of associations between AASP and MAIA were observed: psychotic patients showed negative correlations between MAIA and AASP in the LR and Sensation Seeking (SS) sub-scales and in the auditory (AU) and tactile (TO) sensory channels. Healthy controls, positive correlations emerged between MAIA and AASP in the Sensation Seeking (SK) sub-scale and in the “perception of movement” (MO) sub-score (Fig.2)(Fig.3).![]() ![]() ![]() Conclusions Higher scores of psychotic patients in AASP and MAIA reveal both a disregulated sensory related behavior and a hightened awareness towards internal stimuli. The negative correlation between the two scales in psychotic subjects highlights the importance of the interaction between internal and external perception in determining the global subjective experience.
Collapse
|
31
|
Cruz L, Silva A, Lopes J, Damas D, Lourenço J, Costa A, Silva F, Sousa J, Galego O, Nunes C, Veiga R, Machado C, Rodrigues B, Cecilia C, Almendra L, Bras A, Santo G, Machado E, Sargento-Freitas J. Early Cerebrovascular Ultrasonography as a Predictor of Hemorrhagic Transformation After Thrombectomy. J Stroke Cerebrovasc Dis 2021; 30:105922. [PMID: 34157670 DOI: 10.1016/j.jstrokecerebrovasdis.2021.105922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/25/2021] [Accepted: 05/26/2021] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVES To determine the predictive value of early transcranial color-coded sonography (TCCS) for intracranial hemorrhage (ICH) in patients with large artery occlusion (LAO) stroke of carotid circulation, who were submitted to endovascular therapy (EVT) with successful reperfusion. MATERIALS AND METHODS Retrospective study evaluating a cohort of consecutive stroke patients with LAO of the carotid circulation that were recanalyzed with EVT. We measured angle-corrected peak systolic velocities, end-diastolic velocities and mean flow velocities (PSV, EDV and MFV) of the symptomatic and asymptomatic middle cerebral artery (MCA). The ratio between MFV of the symptomatic MCA and MFV of the asymptomatic MCA (MCA-Ra) was calculated. Parenchymal hematoma in the 24 hours control CT was considered as ICH. Univariate associations and multivariate analyses were used to identify early independent predictors for ICH among TCCS findings. RESULTS We included 234 patients, mean age 72.5 (SD 12.6) years, 52.1% male. The mean time between recanalization and TCCS was 12.3 hours (range 3-22). Patients who developed postinterventional ICH showed a higher MCA-Ra (1.02 ± 0.26 vs 1.16 ± 0,21, p = 0.036). In multivariate analysis, only higher MCA-Ra remained independently associated with postinterventional ICH (OR: 6.778, 95%CI: 1.152-39.892, p = 0.034). A value of MCA-Ra ≥ 1,05 was associated with ICH, showing a sensitivity of 81.3% and a specificity of 65.9%; the AUC based of the ROC analysis was 0.688 (95% CI 0.570-0.806). CONCLUSION TCCS performed within the first 24 hours after stroke onset can help to predict hemorrhagic transformation in patients with LAO.
Collapse
|
32
|
Everett D, Ke W, Paquet JF, Vujanovic G, Bass SA, Du L, Gale C, Heffernan M, Heinz U, Liyanage D, Luzum M, Majumder A, McNelis M, Shen C, Xu Y, Angerami A, Cao S, Chen Y, Coleman J, Cunqueiro L, Dai T, Ehlers R, Elfner H, Fan W, Fries RJ, Garza F, He Y, Jacak BV, Jacobs PM, Jeon S, Kim B, Kordell M, Kumar A, Mak S, Mulligan J, Nattrass C, Oliinychenko D, Park C, Putschke JH, Roland G, Schenke B, Schwiebert L, Silva A, Sirimanna C, Soltz RA, Tachibana Y, Wang XN, Wolpert RL. Phenomenological Constraints on the Transport Properties of QCD Matter with Data-Driven Model Averaging. PHYSICAL REVIEW LETTERS 2021; 126:242301. [PMID: 34213947 DOI: 10.1103/physrevlett.126.242301] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 03/05/2021] [Accepted: 05/27/2021] [Indexed: 06/13/2023]
Abstract
Using combined data from the Relativistic Heavy Ion and Large Hadron Colliders, we constrain the shear and bulk viscosities of quark-gluon plasma (QGP) at temperatures of ∼150-350 MeV. We use Bayesian inference to translate experimental and theoretical uncertainties into probabilistic constraints for the viscosities. With Bayesian model averaging we propagate an estimate of the model uncertainty generated by the transition from hydrodynamics to hadron transport in the plasma's final evolution stage, providing the most reliable phenomenological constraints to date on the QGP viscosities.
Collapse
|
33
|
Barbosa-Silva M, Lima M, Amorim É, Silva A, Freitas R, Passos B, Oliveira H, Campos R, Moraes C, Granja M, Estato V, Rocco P, Faria-Neto H, Maron-Gutierrez T. Mesenchymal stromal cells protect the blood-brain barrier and prevent cognitive and behavioral impairments in infectious disease-associated encephalopathies. Cytotherapy 2021. [DOI: 10.1016/s1465324921003054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
34
|
Andrade F, Machado A, Vieira A, Silva A. Bipolar mania with psychosis vs without psychosis: A clinical characterization with indirect measures of severity. Eur Psychiatry 2021. [PMCID: PMC9471439 DOI: 10.1192/j.eurpsy.2021.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Introduction The presence of psychotic symptoms is highest during acute episodes of bipolar mania. There is no evidence base regarding the implications of psychosis in the prognosis of bipolar disorder, despite common assumption that their occurrence reflects greater disease severity. Objectives We aim to compare sociodemographic and clinical characteristics of inpatients admitted for bipolar mania with and without psychotic features. Methods Retrospective observational study of inpatients admitted between January 1st 2017 and 31 October 2020 in a psychiatry inpatient unit of a tertiary hospital. Descriptive analysis of the results was performed using the SPSS software, version 26.0. Results Between 2017 and October 2020 there were 103 admissions due to mania bipolar I disorder, 53.4% (n=55) with psychotic symptoms. When compared with mania without psychosis, psychotic mania was associated to male gender (71.1% to 39.7%; c2(1, N = 103) = 10,06; p = 0.02) and younger age (t(103) = -2.43; p = 0.017). The proportion of compulsory admissions and average length of stay were similar between mania with psychosis and mania without psychosis. Also, having a manic bipolar episode with psychotic symptoms was not associated to being prescribed a long-acting injectable antipsychotic. Conclusions The presence of psychotic symptoms in bipolar manic episodes were associated to male gender and younger age but not to indirect measures of illness severity. Disclosure No significant relationships.
Collapse
|
35
|
Anthony S, Pol S, Brudno M, Manase D, Parekh R, Silva A, Stinson J. The Design of Voxe: An Electronic Patient-Reported Outcome Measure Platform to Capture Pediatric Transplant Patients’ Voices and Transform Care. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
36
|
Silva A, Sá JC, Santos G, Silva FJ, Ferreira LP, Pereira MT. A Comparison of the Application of the SMED Methodology in Two Different Cutting Lines. QUALITY INNOVATION PROSPERITY 2021. [DOI: 10.12776/qip.v25i1.1446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Purpose: This study was carried out in a cork company and its purpose was to observe and analyze the practices and methods used during the tools/series change moments and to propose improvements and alternatives to these same procedures so that the time needed to carry out the setup is reduced by 15% in both lines.
Methodology/Approach:The methodology included the following phases: 1st - historical data collection and setup video recording, 2nd - footage analysis and conduction of informal interviews with employees, 3rd - flow, Gantt, and spaghetti charts creation and making of an action plan based on the waste and improvement opportunities identified in video analysis, 4th - validation with the line workers of the new operating mode created with the Single Minute Exchange of Dies (SMED) tool and communication to the Maintenance department about their role in this project, 5th - making and placement of plasticized cards on the cutting lines to ensure that new operating mode is followed and carrying out the actions identified in the action plan.
Findings: Throughout this project using observations, video recording and its subsequent analysis, as well as interviews to the workers operating in the line, it was found the existence of several actions carried out by them during the setups which did not add value to the product, lack of adequate tools for the work to be performed and lack of work tools in general
Research Limitation/implication: The study was limited by the lines and products under study and by the duration of the curricular internship, which was about five months.
Originality/Value of paper: The article demonstrates the added value in terms of product quality and production output rate that SMED methodology can bring to companies that adopt the lean philosophy and in particular this continuous improvement tool.
Collapse
|
37
|
Magliocca S, Dolenz F, Silva A, Madeddu F, Calati R. Italian validation of the interpersonal needs questionnaire (INQ-15-I) in a sample of university students. Eur Psychiatry 2021. [PMCID: PMC9479980 DOI: 10.1192/j.eurpsy.2021.1559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction The Interpersonal Theory of Suicide posits that thwarted belongingness (TB) and perceived burdensomeness (PB) are proximal causes of current suicidal desire, while the acquired capability predicts suicide attempts (Joiner, 2005). Objectives This study examined the psychometric properties of the Interpersonal Needs Questionnaire (INQ-15-I), as a measure of the two constructs, on a sample of 458 Italian university students. Methods After examining the socio-demographic, clinical and psychosocial characteristics of the sample, we tested the differences in current suicidal ideation and lifetime suicide risk among students. We conducted a confirmatory factor analyses to identify the latent structure of the INQ-15-I and we tested the reliability, criterion concurrent validity and convergent/discriminant validity. Results The socio-demographic, clinical and psychosocial features of the sample are in line with the literature on the topic. A two-factor related model with 15 item, showed a good fit to the data and subscales showed excellent internal consistencies (α ≥ 0.84). TB, but mostly PB, were mainly correlated with concurrent suicidal ideation and less with suicidal risk. Divergent validity has emerged with the constructs of the acquired capability. Convergent validity is supported for similar constructs such as depression, low reasons for living, anxiety, interoceptive awareness, psychological pain, loneliness, absence of social support and low self-esteem. Conclusions INQ-15-I provides a valid measure of the interpersonal needs among Italian university students by indirectly investigating suicidal risk factors. It also suggest specific clinical intervention areas in suicide prevention. Thus it may be included in suicide risk assessment protocols in Italy.
Collapse
|
38
|
Silva A, Politi P, Brondino N, Olivola M. Efficacy of IV immunoglobulins on depressive symptoms and self-injury: A case report. Eur Psychiatry 2021. [PMCID: PMC9480233 DOI: 10.1192/j.eurpsy.2021.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Introduction Some studies in literature highlight the correlation between immune-mediated inflammatory processes and psychiatric pathologies. However, there are few studies about the efficacy of IV immunoglobulins in psychiatric features (1). (1) ZUNSZAIN, Patricia A.; HEPGUL, Nilay; PARIANTE, Carmine M. Inflammation and depression. In: Behavioral neurobiology of depression and its treatment. Springer, Berlin, Heidelberg, 2012. p. 135-151. Objectives Case report: a 39 year patient diagnosed with borderline personality disorder and myasthenia was hospitalized for self-injury ideation, acting out and depressive episode treated with acid valproic, aripiprazole, gabapentin; flare-up of myasthenia that needed treatment. Methods Clinical and test evaluation was performed in three stages: before (t0), immediately after (t1) and 3 weeks after (t2) the administration of the IgEV without other treatment modifications. We have used: - Inventory of Statements About Self-Injury (ISAS) - Barrat Impulsiveness Scale, Version 11 (BIS-11) - Hamilton Anxiety Rating Scale (HAM-A) - Montgomery-Asberg Depression Rating Scale (MADRS) - Alexian Brothers Urge to Selfe-Injure Scale (ABUSI) Results The patient has a score of 79 at BIS-11. She used to have a huge number of acting aout as we see on ISAS (Fig.1).![]() ![]() Conclusions We observed a reduction in non-suicidal self-injurious ideation, the suspension of acting-out, a complete remission of depressive symptoms with mild persistence of anxious symptoms immediately after the administration of immunoglobulins, and the remission continue until one month after the administration (Fig.2). Disclosure No significant relationships.
Collapse
|
39
|
Dolenz F, Magliocca S, Silva A, Madeddu F, Calati R. Italian validation of the ACSS-FAD in a sample of university students. Eur Psychiatry 2021. [PMCID: PMC9480321 DOI: 10.1192/j.eurpsy.2021.1579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Suicide is one of the most relevant cause of death especially in young populations. The Interpersonal Theory of Suicide (Joiner, 2005) is an important contribution tends to explain variability in suicidal behavior, particularly the difference between suicidal ideation and suicide attempt. Objectives This study aimed at the Italian validation of the Acquired Capability for Suicide Scale – Fearlessness About Death (ACSS-FAD), assessing fearlessness about death, one of the facets of the acquired capability (AC) to commit suicide as postulated by the Interpersonal Theory of Suicide by Thomas Joiner. Methods This cross-sectional research was conducted on a sample of university students (n = 458) assessed with a battery including ACSS-FAD. The sample was evaluated for the presence of suicidal ideation and suicide risk. Factor structure, internal consistency and convergent/divergent validity of the scale were assessed. Results One-factor structure with good internal consistency (Cronbach’s α: 0.84) was derived. ACSS-FAD correlated with suicidal ideation and suicidal risk, and there was a tendency towards significance considering its capacity to discriminate between those who had a history of suicide attempts and those who did not. 4.1% of the sample attempted suicide at least one time. The tool showed good convergent/discriminant validity results, but the relationship between ACSS-FAD and pain needs further investigations. Conclusions ACSS-FAD seems to be a useful and valid measure of fearlessness about death especially in young adults, which could be really important to enhance suicide risk assessment. Conflict of interest No significant relationships.
Collapse
|
40
|
Vieira A, Andrade F, Machado A, Barbosa D, Sousa A, Da Costa IS, Silva A. Inpatient psychiatry care during coronavirus 2019 pandemic lockdown: Results from a department of psychiatry in northern Portugal. Eur Psychiatry 2021. [PMCID: PMC9471828 DOI: 10.1192/j.eurpsy.2021.828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Introduction COVID-19 pandemic and the consequent containment measures have a negative impact on mental health. Simultaneously, the fear of infection can discourage patients from seeking necessary care. Objectives We aim to compare sociodemographic and clinical characteristics of inpatients admitted during the COVID-19 confinement period in Portugal vs. inpatients admitted in the same period the previous year. Methods Retrospective observational study of inpatients admitted between March 19th 2020 and May 1st 2020 and the analog period of 2019 in a psychiatry inpatient unit of a tertiary hospital. Descriptive analysis of the results was performed using the SPSS software, version 26.0. Results During the lockdown period, there were 30 admissions to the psychiatry inpatient unit, 55.2% less than the same period last year (n=67). The proportion of compulsory admissions and the average length of stay did not differ between the two periods. Regarding sociodemographic characteristics, in the confinement period inpatients were similar to the ones in the same period of 2019. In both periods, the majority of patients had previous psychiatric history (lockdown vs. same period last year: 95.5% and 90.0%) and a similar proportion of readmissions rate (previous year) was similar in the two groups (49.9% vs 47.6%). At discharge, the most frequent diagnostic groups were mood disorders (33.3% (n=10) and 34.3% (n=23)) and schizophrenia, schizotypal and delusional disorders (26,7% (n=8) and 31.3% (n=21)). Conclusions Although there was an expressive reduction of admissions to the psychiatry inpatient unit during lockdown, the clinical characteristics of these patients were analogous to the same period in the previous year.
Collapse
|
41
|
Silva A, Sachdev B, Kostusiak M, Yousif M, Flint G, Dhir J, Furtado N, Laing R. Out of hours magnetic resonance imaging for suspected cauda equina syndrome: lessons from a comparative study across two centres. Ann R Coll Surg Engl 2021; 103:218-222. [PMID: 33645281 DOI: 10.1308/rcsann.2020.7086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Cauda equina syndrome, a rare but disabling spinal surgical emergency, requires prompt investigation, ideally using magnetic resonance imaging as patients may require decompressive surgery. Out of hours access to magnetic resonance imaging is only routinely available in major trauma centres and neurosurgical units. Patients in regional hospitals with suspected cauda equina syndrome may require transfer for diagnostic imaging. We retrospectively studied the proportion of patients referred with suspected cauda equina syndrome who required out of hours transfer for magnetic resonance imaging and decompressive surgery. MATERIALS ANDS METHODS Retrospective cohort study of patients referred using online referral platforms with suspected acute cauda equina syndrome and transferred out of hours between 6pm to 8am on weekdays and all day on weekends to two of the largest neurosurgical units in the UK in Birmingham and Cambridge. RESULTS A total of 441 patients were referred across both sites with a suspicion of acute cauda equina syndrome; 339 patients were transferred for diagnostic scans and only 16 of them (4.7%) were positive for cauda equina compression, necessitating prompt decompressive surgery. Of the patients with negative magnetic resonance scans, 50% had their discharge or transfer back to referring hospitals delayed by more than 24 hours. CONCLUSIONS Over 95% of patients who were transferred for imaging did not undergo emergency decompression. The authors propose a greater role for the provision of out of hours magnetic resonance imaging in all hospitals admitting emergency patients to streamline management.
Collapse
|
42
|
Muyle A, Martin H, Zemp N, Mollion M, Gallina S, Tavares R, Silva A, Bataillon T, Widmer A, Glémin S, Touzet P, Marais GAB. Dioecy Is Associated with High Genetic Diversity and Adaptation Rates in the Plant Genus Silene. Mol Biol Evol 2021; 38:805-818. [PMID: 32926156 PMCID: PMC7947750 DOI: 10.1093/molbev/msaa229] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
About 15,000 angiosperm species (∼6%) have separate sexes, a phenomenon known as dioecy. Why dioecious taxa are so rare is still an open question. Early work reported lower species richness in dioecious compared with nondioecious sister clades, raising the hypothesis that dioecy may be an evolutionary dead-end. This hypothesis has been recently challenged by macroevolutionary analyses that detected no or even positive effect of dioecy on diversification. However, the possible genetic consequences of dioecy at the population level, which could drive the long-term fate of dioecious lineages, have not been tested so far. Here, we used a population genomics approach in the Silene genus to look for possible effects of dioecy, especially for potential evidence of evolutionary handicaps of dioecy underlying the dead-end hypothesis. We collected individual-based RNA-seq data from several populations in 13 closely related species with different sexual systems: seven dioecious, three hermaphroditic, and three gynodioecious species. We show that dioecy is associated with increased genetic diversity, as well as higher selection efficacy both against deleterious mutations and for beneficial mutations. The results hold after controlling for phylogenetic inertia, differences in species census population sizes and geographic ranges. We conclude that dioecious Silene species neither show signs of increased mutational load nor genetic evidence for extinction risk. We discuss these observations in the light of the possible demographic differences between dioecious and self-compatible hermaphroditic species and how this could be related to alternatives to the dead-end hypothesis to explain the rarity of dioecy.
Collapse
|
43
|
Martins T, Montenegro L, Silva A, Reis H, Pereira E, Lucas P. Spinal subarachnoid haematoma after neuraxial anaesthesia in a patient with polycythaemia vera. Anaesth Rep 2021; 9:8-11. [PMID: 33479701 DOI: 10.1002/anr3.12093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/07/2020] [Indexed: 11/08/2022] Open
Abstract
Polycythaemia vera is a common haematological proliferative disorder. It is characterised by uncontrolled red cell production with ensuing peri-operative vaso-occlusive and haemorrhagic complications. Spinal haematoma after neuraxial anaesthesia is rare; most cases are associated with technical difficulties or bleeding disorders. Current consensus opinion suggests that neuraxial anaesthesia in patients with polycythaemia vera is safe due to a lower risk of thrombotic events and hypoxaemia compared with general anaesthesia. We report a case of a spinal subarachnoid haematoma after uneventful neuraxial anaesthesia in a patient with optimised polycythaemia vera. Despite an emergent laminectomy, the patient developed permanent motor deficits. This report highlights that although neuraxial anaesthesia is recommended by many authors, patients with polycythaemia vera can paradoxically have an increased haemorrhagic risk from platelet dysfunction and acquired von Willebrand disease. Clinicians proceeding with surgery under neuraxial anaesthesia should appreciate these risks even in patients with normal or apparently elevated thrombotic states. This case also demonstrates that traditional coagulation tests may need to be complemented by pre-operative platelet function tests and screening for von Willebrand disease. Finally, the importance of the patient participation in the choice of the anaesthesia technique cannot be understated, with specific attention paid to this frequently unrecognised risk.
Collapse
|
44
|
Silva A, Oliveira AS, Vaz CV, Correia S, Ferreira R, Breitenfeld L, Martinez-de-Oliveira J, Palmeira-de-Oliveira R, Pereira CMF, Palmeira-de-Oliveira A, Cruz MT. Anti-inflammatory potential of Portuguese thermal waters. Sci Rep 2020; 10:22313. [PMID: 33339881 PMCID: PMC7749128 DOI: 10.1038/s41598-020-79394-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 12/08/2020] [Indexed: 11/09/2022] Open
Abstract
In light of Medical Hydrology, thermal waters (TW) are all-natural mineral waters that emerge inside a thermal resort and have therapeutic applications. Their beneficial effect has been empirically recognized for centuries, being indicated for symptom alleviation and/or treatment of several diseases, almost all associated with inflammation. Indeed, an anti-inflammatory effect has been attributed to many different Portuguese TW but there is no scientific validation supporting this empiric knowledge. In the present study, we aimed to investigate the anti-inflammatory properties of 14 TW pertaining to thermal centers located in the Central Region of Portugal, and grouped according to their ionic profile. Mouse macrophage cells stimulated with lipopolysaccharide (LPS), a Toll-like receptor 4 agonist, were exposed to culture medium prepared in TW. Metabolism, nitric oxide (NO) production, inducible nitric oxide synthase (iNOS) expression levels and the scavenging capacity of TW, were investigated in vitro. 11 out of 14 TW reduced NO production and/or iNOS expression, and/or scavenging activity, in macrophages exposed to LPS. The sulphated/calcic TW did not show any effect on at least one of the inflammatory parameters evaluated. Two sulphurous/bicarbonate/sodic TW and the sulphurous/chlorinated/sodic TW promoted an increase in NO production and/or iNOS expression. Our results validate, for the first time, the anti-inflammatory properties of Portuguese TW, supporting their therapeutic use in the treatment of inflammation-related diseases and promoting their putative application in cosmetic products and medical devices.
Collapse
|
45
|
Castelo A, Laranjo S, Lousinha A, Cunha P, Brandao C, Alves S, Silva A, Ferreira V, Bras P, Mano T, Oliveira M, Ferreira R. Role of tilt-table testing in syncope diagnosis and management: analysis of patients referred to a syncope unit. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Head-up tilt-testing (HUT) enables the reproduction of reflex syncope in a laboratory setting. Despite being used to confirm the diagnosis of this syncope, there is some concerns regarding the best protocol to use and recent studies with implantable loop recorders have called the value of HUT into question.
Aim
To characterize the population undergoing HUT according to the modified Italian protocol, type of response to HUT and subsequent management at our center in the last 4 years.
Methods
Retrospective analysis of consecutive P who underwent HUT between 2015 and 2018. Descriptive analysis of patients (P) demographics and medical history, indication for HUT, type of response to HUT and management.
Results
A total of 419P (55.1% female) were included with a mean age of 62 years. The majority (n=302, 72.1%) had comorbidities (structural heart disease – 55%, cardiac dysrhythmias – 57.6%, hypertension – 48.3%, diabetes – 15.6%, depression – 15.9%, cerebrovascular disease –10.6%) or was under medication (n=220, 52.5%) with a potential hypotensive or bradycardic effect (44.1% ACEI/ARA, 29.1% beta-blocker, 27.7% diuretic, 23.6% antidepressant, 22.7% calcium channel blocker, 19.1% benzodiazepines). Syncope/presyncope episodes accounted for 56.1% of the HUT, with falls and disequilibrium accounting for 52%. In 21 cases (5%) suspected dysautonomia or other non-specified reasons were the indication for HUT. HUT were ordered according to the guidelines in 136P (84.6% – indication level I, 3.6% – level IIa, 11.8% – level IIb). HUT was positive in 292P (69.7%) – 77.1% after nitroglycerin administration (vasodepressor – 170P, cardioinhibitory – 53P, mixed – 62P and dysautonomic – 7P). Cardioinhibitory (CI) response predominated in the younger, and vasodepressor in the older P. Of the P with CI response, 41.5% had asystole (median of 41.4s, minimum 7.5s, maximum 115s). All P were instructed in the need to avoid triggering factors and perform counterpressure maneuvers. A pacemaker was implanted in 24P (5.7% of all population, due to long sinus pauses and asystole). Twenty-four P (5.7%) completed a tilt training program.
Conclusion
Most of the HUT were requested for syncope/presyncope, frequently according to the guidelines. There was a high rate of positive tests, with a predominance of vasodepressive response, particularly in the elderly.
Funding Acknowledgement
Type of funding source: None
Collapse
|
46
|
Lourenço P, Santos J, Havránek A, Bogar O, Havlíček J, Zajac J, Silva A, Batista A, Hron M, Pánek R, Fernandes H. Real-time plasma position reflectometry system development and integration on COMPASS tokamak. FUSION ENGINEERING AND DESIGN 2020. [DOI: 10.1016/j.fusengdes.2020.112017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
47
|
Marta G, Miranda F, Silva A, Hanna S, Neves Jr W, De Arruda F, Mancini A, Gadia R, Moraes F. PO-1253: Stereotactic Ablative Radiotherapy for spinal metastases: Experience at a Brazilian Institution. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01271-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
48
|
Paixão M, Carmona A, Capelão H, Calé E, Silva A. Ending female genital mutilation – a city’s coordinated effort. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Female genital mutilation (FGM) has short and long-term impacts on the health of girls/women. In Portugal, an estimated 5246 women were subjected to it, with 568 of them residing in the city of Amadora, in the metropolitan area of the capital Lisbon. As such, Amadora was considered a priority area for developing strategies to prevent female genital mutilation, under the coordination of the local public health unit.
Our aim was to capacitate professionals to recognise and act on risk/danger and on minimising potential health impacts of FGM on the local institutions these girls/women might come into contact with.
We created a task force that held meetings with different local actors: hospital, teams at the primary healthcare facility, city hall of Amadora, child protection services, a school, social inclusion projects, representatives of the justice system and a non-governmental organisation. We designed different scenarios for the different needs and entry points of these girls/women in the system and created appropriate procedures for all these actors. Within the primary healthcare facility, we created guidelines specifying criteria for referral to other specialties. This led to the development of a county protocol targeting FGM during the summer of 2019.
We trained 160 healthcare professionals. In addition, we created a booklet for schools and held sessions in school groups targeting teachers, psychologists and operational assistants with a focus on risk and danger indicators and on how to proceed. Overall, 360 school professionals received training. During these sessions, we also presented resources on how to integrate FGM in discussions with students regarding gender violence and human rights.
This intervention will be evaluated after one year (summer of 2020) through mixed-methods to understand the impact on the practice of the professionals in Amadora. We will conduct interviews and apply questionnaires to capture the implementation of this city-wide protocol.
Key messages
Given the complexity of FGM a wide societal and multidisciplinary approach should be used with a public health team coordinating the intervention. In Portugal there is a need for an organised and systematic response by professionals regarding FGM; our county-specific protocol aimed to create that response.
Collapse
|
49
|
Carmona A, Paixão M, Silva A. Planned teenage pregnancy: a sociocultural health problem that lead to a local intervention. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
According to data from the National Statistics Institute (2018), Portugal was the country with the second highest birth rate in the European Union in mothers between 15 and 19 years old. This number of births may be influenced by ethnic-cultural issues, such as acceptance and encouragement of marriage and early motherhood, especially in some African ethnic-cultural groups. Our public health unit is located in Amadora, a suburban area of the Portuguese capital with a high percentage of migrants, a high rate of teenage pregnancies and economically deprived areas.
The aim of our research was to understand beliefs and values in both native and migrant girls regarding motherhood in order to better tailor interventions aiming to prevent teenage pregnancy.
We interviewed fifteen participants, seven migrants and eight natives, who were or had been teenage mothers. The participants were selected through non-probabilistic snowball sampling. Afterwards, we performed a qualitative content analysis.
Overall, we found no difference between the 2 groups of participants with most, 12, having wished for their pregnancies. The social and religious framing of fertility as a gift was often stated. The housing context was also mentioned given several participants lived in overcrowded houses with poor conditions and believed pregnancy could have provided a way out of their living situation. Low education and poor job prospects were also mentioned as pregnancy was framed as a “life project” in the absence of a career prospect.
We found evidence of a “social and cultural pregnancy” not related to certain migrant cultures but associated with a “neighbourhood” culture associated with economic deprivation. As such, we are now implementing a pilot study within the community, by creating regular group sessions to discuss the meaning and impact of motherhood to try to capacitate girls to find a different life project other than choosing pregnancy during teenage years.
Key messages
Teenage pregnancy can be planned who use it to try to find a life project, be accepted within their community and escape their daily conditions. Public health interventions aiming to prevent teenage pregnancies should acknowledge social and cultural factors that encourage these pregnancies.
Collapse
|
50
|
Rocha G, de Lima FF, Machado AP, Guimarães H, Proença E, Carvalho C, Martins LG, Martins T, Freitas A, Dias CP, Silva A, Barroso A, Diogo I, Cassiano G, Ramos H, Abrantes MM, Costa P, Salazar A, Vieira F, Fontes D, Barroso R, Marques T, Santos V, Scortenschi E, Santos C, Vilela F, Quintas C. Small for gestational age very preterm infants present a higher risk of developing bronchopulmonary dysplasia. J Neonatal Perinatal Med 2020; 12:419-427. [PMID: 31256077 DOI: 10.3233/npm-180129] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Several studies assessed the influence of a low birth weight on bronchopulmonary dysplasia (BPD), but not all could find a significant association. Our aim was to assess the association between low birth weight and BPD in preterm infants, prospectively recruited at 11 level III Portuguese neonatal centers. METHODS Obstetrical and neonatal data on mothers and preterm infants with gestational ages between 24 and 30 weeks, born during 2015 and 2016 after a surveilled pregnancy, were analyzed. Neonates were considered small for gestational age (SGA) when their birthweight was below the 10th centile of Fenton's growth chats and BPD was defined as the dependency for oxygen therapy until 36 weeks of corrected age. Statistical analysis was performed using IBM SPSS® statistics 23 and a p-value <0.05 was considered statistically significant. RESULTS Out of 614, a total of 494 preterm infants delivered from 410 women were enrolled in the study; 40 (8.0%) infants with SGA criteria. SGA were more often associated with a single pregnancy, had greater use of antenatal corticosteroids, increased prevalence of gestational hypertensive disorders, C-section, rupture of membranes below 18 hours, rate of intubation in the delivery room, use of surfactant treatment, oxygen therapy, mechanical ventilation need, BPD, cystic periventricular leukomalacia, nosocomial sepsis and pneumonia; had lower prevalence of chorioamnionitis, and lower Apgar scores. The multivariate analysis by logistic regression, adjusted for BPD risk factors revealed a significant association between SGA and BPD: OR = 5.2 [CI: 1.46-18.58]; p = 0.01. CONCLUSION The results of this study increase the scientific evidence that SGA is an independent risk factor for BPD.
Collapse
|