Caregiver strain among patients of palliative care in Sri Lanka: validation of modified caregiver strain index - Sinhala version

BACKGROUND

Care givers of Palliated patients are at risk of adverse physical, psychosocial and emotional sequelae in varied nature. Efficient and valid assessment tools facilitate early detection to take corrective measures. The Modified Caregiver Strain Index (MCSI), composed of domains associated with caregiver strain is a simple and brief tool that can be used in both clinical and field settings. This study aimed to adapt and validate this in order to cater effective palliative care services in Sri Lanka.

METHODS

After cross-cultural adaptation, 200 primary caregivers in 3 teaching hospitals were recruited. The internal consistency, item-total correlations, of the 13-item S-MCSI were performed. The criterion validity was assessed by Pearson correlation between the total scores of S-MCSI, the Karnofky Performance Scale and the Barthel index. Construct validity was determined by the principal component analysis keeping the Varimax with Keiser normalization as the rotation method. The Kaiser-Meyer-Olkin test (KMO) and Bartlett's test of sphericity statistics were also performed to determine the adequacy of the sample and correlations between items, respectively. The number of factors was determined by the Scree plot, percentage of variance explained by each component and number of Eigen values over 01 (Kaiser-Guttman rule).

RESULTS

The total MCSI score ranged 0 to 26. The overall Cronbach's alpha of the 13-item questionnaire was 0.80 while item-total corrections ranged 0.34 to 0.62, exception of one item (0.11). Inverse correlations were demonstrated in total scores of MCSI and Karnofky Performance Scale (r =- 0.32, p < 0.001) and Barthel index (r =-0.34, P < 0.001). A Kaiser-Meyer-Olkin value of 0.79 (p < 0.001) for Bartlett's test indicated adequate sampling and nonlinearity of factors. The Scree plot showed a three-factor structure explaining 57% of the variation. Items regarding personal wellbeing of caregiver loaded together while the effects on the family loaded separately. Adjustment of personal concerns and family issues along with time alteration grouped as the third factor.

CONCLUSIONS

The study showed that the Sinhala version of MCSI has adequate psychometric properties and reliability to be used as a validated tool to estimate the caregiver burden within a short time period for any health care workers.

Rod precursors in the adult retina of the Austrolebias charrua annual fish

Rod photoreceptors in the adult teleost retina are produced by rod precursors located in the outer nuclear layer (ONL). Annual fishes of the genus Austrolebias exhibit extensive adult retinal cell proliferation and neurogenesis, as well as surprising adaptive strategies to their extreme and changing environment, including adult retinal plasticity. Thus, here we identify and characterize rod precursors in the ONL of the Austrolebias charrua retina. For this aim we used classical histological techniques, transmission electron microscopy, detection of cell proliferation, and immunohistochemistry. Through these complementary approaches, we describe a cell population clearly distinguishable from photoreceptors in the ONL of the adult retina of A. charrua, which we propose corresponds to the rod precursor population. These cells exhibited particular morphological and ultrastructural characteristics, uptake of cell proliferation markers (BrdU+) and expression of stem cell markers (Sox2+). Determining the existence of the population of rod precursors is crucial to understand the sequence of events related to retinal plasticity and regeneration.

Exploring the prevalence and antibiotic resistance profile of Klebsiella pneumoniae and Klebsiella oxytoca isolated from clinically ill companion animals from North of Portugal

Klebsiella spp. is an important pathogen in humans and animals and due to the indiscriminate use of antibiotics, its prevalence and antibiotic resistance has increased in companion animals. The main goal of this study was to investigate the prevalence and antibiotic resistance of Klebsiella spp. isolated from clinically ill cats and dogs admitted in veterinary clinics in the North of Portugal. A total of 255 clinical specimens were collected and, after isolation, the identification of Klebsiella strains was performed using the BBL Crystal™ identification system and confirmed by PCR-based sequencing with specific primers. Antibiotic resistance profile was determined through the disc diffusion method. Beta-lactam resistance genes were screened through a multiplex PCR assay. Fifty Klebsiella strains were isolated and, 39 were identified as Klebsiella pneumoniae and 11 as Klebsiella oxytoca. Thirty-one were recovered from dogs and 19 from cats. The Klebsiella isolates were recovered mainly from skin wounds, respiratory tract, and from urine. Fifty percent of K. oxytoca and K. pneumoniae isolates revealed to be Multidrug Resistant (MDR) strains, with most of them positive for the presence of blaTEM-like and blaSHV genes. This data shows that MDR Klebsiella are highly disseminated in companion animals and that extended-spectrum beta-lactamases can be easily found among these isolates. This highlights the potential role of dogs and cats as a reservoir of resistant Klebsiella spp. that have the potential to be transmitted to humans.

Combined Application of Antisense Oligomers to Control Transcription Factors of Candida albicans Biofilm Formation

Antisense oligomers (ASOs) have been little exploited to control determinants of Candida albicans virulence. Biofilm formation is an important virulence factor of C. albicans, that is regulated by a complex network of transcription factors (such as EFG1, BRG1 and ROB1). Thus, the main goal of this work was to project ASOs, based on the 2'-OMethyl chemical modification, to target BRG1 and ROB1 mRNA and to validate its application either alone or in combination with the EFG1 mRNA target, to reduce C. albicans biofilm formation. The ability of ASOs to control gene expression was evaluate by qRT-PCR. The effect on biofilm formation was determined by the total biomass quantification, and simultaneously the carbohydrates and proteins reduction on extracellular matrix. It was verified that all the oligomers were able to reduce the levels of gene expression and the ability of C. albicans to form biofilms. Furthermore, the combined application of the cocktail of ASOs enhances the inhibition of C. albicans biofilm formation, minimizing biofilm thickness by reducing the quantity of matrix content (protein and carbohydrate). So, our work confirms that ASOs are useful tools for research and therapeutic development on the control of Candida species biofilm formation.

Environmental and bioclimatic factors influencing yeasts and molds distribution along European shores

The present study employed data collected during the Mycosands survey to investigate the environmental factors influencing yeasts and molds distribution along European shores applying a species distribution modelling approach. Occurrence data were compared to climatic datasets (temperature, precipitation, and solar radiation), soil datasets (chemical and physical properties), and water datasets (temperature, salinity, and chlorophyll-a concentration) downloaded from web databases. Analyses were performed by MaxEnt software. Results suggested a different probability of distribution of yeasts and molds along European shores. Yeasts seem to tolerate low temperatures better during winter than molds and this reflects a higher suitability for the Northern European coasts. This difference is more evident considering suitability in waters. Both distributions of molds and yeasts are influenced by basic soil pH, probably because acidic soils are more favorable to bacterial growth. Soils with high nitrogen concentrations are not suitable for fungal growth, which, in contrast, are optimal for plant growth, favored by this environment. Finally, molds show affinity with soil rich in nickel and yeasts with soils rich in cadmium resulting in a distribution mainly at the mouths of European rivers or lagoons, where these metals accumulate in river sediments.

Impact of booster vaccination on COVID-19 outcomes in Portuguese population aged 80 or more years old

Background

Vaccination is essential to control SARS-CoV-2 transmission and complications. The study aimed to estimate the number of SARS-CoV-2 infections, COVID-19 hospitalizations and deaths averted by booster vaccination in Portuguese population aged 80 or more years old.

Methods

We developed an ecological study for the period of the Omicron variant of concern predominance (week 2 to week 16, 2022). Data on vaccine coverage and effectiveness, and number of events of different severity reported to the national COVID-19 surveillance system were used to estimate the number of averted events, prevented fraction and number needed to vaccinate. Uncertainty intervals (UI) were obtained using Monte Carlo simulations.

Results

By week 2 2022, vaccination coverage in the target population reached 91.2%. Booster vaccine effectiveness was 4.1% (CI95%: -0.1 to 9.0), 87.5% (CI95%: 84.9 to 89.7) and 83.2 (CI95%: 80.3 to 85.7) against infection, hospitalization and death, respectively. During the study period, 70862 SARS-CoV-2 infections, 2697 COVID-19 hospitalizations and 2106 deaths were reported. Booster vaccination averted 2731 (UI95%: -298 to 5838) infections, 10629 (UI95%: 9173 to 12127) hospitalizations and 6608 (UI95%: 5725 to 7546) COVID-19 related deaths among individuals aged 80 years or more resident in Portugal. Prevented fractions were 3.7% (UI95%: 0 to 7.6%), 79.7% (UI95%: 77.3 to 81.7%) and 75.8% (UI95%: 73.2 to 78.1%), respectively. It would require to vaccinate 59 individuals (UI95%: 52 to 69) to prevent one hospitalization and 94 individuals (UI95%: 82 to 109) to prevent one death in the target population.

Conclusions

The booster vaccination strategy had considerable impact on preventing severe outcomes in the Portuguese population aged 80 and more years old.

Key messages

• High vaccine coverage combined with high vaccine effectiveness resulted in considerable reduction of severe COVID-19 outcomes.

• Information on number of outcomes of different severity levels averted by COVID-19 booster vaccination allows to strength public health communication.

IMPACTO DA PANDEMIA DA COVID-19 NAS DOAÇÕES DE SANGUE TOTAL E AFÉRESE NO HEMOCENTRO COORDENADOR DO PARANÁ

O doador de sangue é a figura central no processo de produção de hemocomponentes. O objetivo deste estudo consistiu na análise do impacto da pandemia da COVID - 19 no fornecimento dos produtos da doação. A fonte de dados documental desta pesquisa corresponde ao Sistema de Banco de Sangue - SBS.web que contém informações de doadores de sangue do Hemocentro Coordenador do Paraná, no período de janeiro de 2017 a dezembro de 2021, bem como os dados do Formsus. Entre 2017 e 2019 a média anual aproximada de doadores foi de 34.693 (n=35.065, 34.738 e 34.278, respectivamente), e entre 2020 e 2021 foi de 34.169 doadores (n=33.223 e 35.116). Considerando-se a declaração da pandemia no Brasil em março de 2020, observa-se o declínio do número de doadores nos anos seguintes, quando comparado ao triênio anterior. A possibilidade de contaminação, com limitação na circulação de pessoas potencialmente infectadas propiciou esse cenário. O impacto desse declínio foi minimizado frente à suspensão temporária de cirurgias eletivas no estado do Paraná, mediante aumento das internações hospitalares para o atendimento da COVID - 19. Reduzida a demanda ao paciente cirúrgico, os estoques de hemocomponentes foram destinados, mais frequentemente, aos serviços de urgência e emergência, os quais também tiveram redução de atendimentos e menor incidência de traumas em decorrência da limitação na circulação de pessoas. Conclui-se que, embora os estoques tenham sofrido prejuízos, inclusive pela restrição no atendimento de candidatos a doação com idade acima de 60 anos, a demanda no consumo também se modificou. Além da habitual necessidade de hemocomponentes por pacientes crônicos, houve a necessidade de intensificar a produção de plasma para tratamento da COVID - 19. Como estratégias encontradas pelo Hemepar Curitiba destaca-se o apelo às campanhas de reposição de estoques nos hospitais, a divulgação da necessidade de doadores nas mídias e o remanejamento de bolsas de sangue entre a hemorrede e os estados.

Exosomal glypican-1 discriminates pancreatic ductal adenocarcinoma from chronic pancreatitis

BACKGROUND AND AIMS

Pancreatic ductal adenocarcinoma (PDAC) diagnosis can be difficult in a chronic pancreatitis (CP) background, especially in its mass forming presentation. We aimed to assess the accuracy of glypican-1-positive circulating exosomes (GPC1+crExos) to distinguish PDAC from CP versus the state-of-the-art CA 19-9 biomarker.

METHODS

This was a unicentric prospective cohort. Endoscopic ultrasound with fine-needle aspiration or biopsy and blood tests (GPC1+crExos and serum CA 19-9) were performed.

RESULTS

The cohort comprised 60 PDAC and 29 CP (7 of which mass forming - MF) patients. Median levels of GPC1+crExos were significantly higher in PDAC (99.7%) versus CP (28.4%; p<0.0001) with an AUROC of 0.96 with 98.3% sensitivity and 86.2% specificity for a cut-off of 45.0% (p<0.0001); this outperforms CA 19-9 AUROC of 0.82 with 78.3% sensitivity and 65.5% specificity at a cut-off of 37 U/mL (p<0.0001). The superiority of% GPC1+crExos over CA 19-99 in differentiating PDAC from CP was observed in both early (stage I) and advanced tumors (stages II-IV).

CONCLUSION

Levels of GPC1+crExos coupled to beads enable differential diagnosis between PDAC and CP including its mass-forming presentation.

Toward a coherent structuration of disorders of consciousness expertise at a country scale: A proposal for France

Probing consciousness and cognitive abilities in non-communicating patients is one of the most challenging diagnostic issues. A fast growing medical and scientific literature explores the various facets of this challenge, often coined under the generic expression of 'Disorders of Consciousness' (DoC). Crucially, a set of independent converging results demonstrated both (1) the diagnostic and prognostic importance of this expertise, and (2) the need to combine behavioural measures with brain structure and activity data to improve diagnostic and prognostication accuracy as well as potential therapeutic intervention. Thus, probing consciousness in DoC patients appears as a crucial activity rich of human, medical, economic and ethical consequences, but this activity needs to be organized in order to offer this expertise to each concerned patient. More precisely, diagnosis of consciousness differs in difficulty across patients: while a minimal set of data can be sufficient to reach a confident result, some patients need a higher level of expertise that relies on additional behavioural and brain activity and brain structure measures. In order to enable this service on a systematic mode, we present two complementary proposals in the present article. First, we sketch a structuration of DoC expertise at a country-scale, namely France. More precisely, we suggest that a 2-tiers network composed of local (Tier-1) and regional (Tier-2) centers backed by distant electronic databases and algorithmic centers could optimally enable the systematic implementation of DoC expertise in France. Second, we propose to create a national common register of DoC patients in order to better monitor this activity, to improve its performance on the basis of nation-wide collected evidence, and to promote rational decision-making.

Childbearing intentions after a very preterm delivery: a study among Portuguese mothers and fathers

Background

Adjustments to intended family size are strongly affected by life-course events, but data on childbearing plans after a very preterm delivery are lacking. This study intends to assess the childbearing intentions of mothers and fathers of very preterm infants, regarding the desired and intended number of children, the factors associated with the intention to have more children and the main reasons for not wanting to have more children.

Methods

Between May and July 2017, mothers and fathers of very preterm infants were invited to participate in a structured online questionnaire through the Portuguese association of parents for support to the premature baby, and 231 mothers and 21 fathers were included. The discrepancy between the ideal and intended number of children was assessed by the McNemar-Bowker test. To assess the main factors associated with the plan to have more children in the future, unconditional logistic regression models were fitted to compute odds ratios (OR) and 95% confidence intervals (95%CI), adjusted for age, number of children and time after the very preterm delivery.

Results

Participants intend to have fewer children than they ideally desired (p &lt; 0.001). Although 69.8% of parents would like to have more children, only 25% actually plan to conceive. After adjustment, participants aged above 34 years (OR = 0.27; 95%CI:0.08-0.86), with more than one offspring (OR = 0.34; 95%CI:0.14-0.69) and who experienced a very preterm delivery 5 or more years ago (OR = 0.28; 95%CI:0.09-0.90) were less likely to report the intention to have more children. The main reasons reported for not wanting to have more children were “having the desired number of children” (38.5%), “financial unavailability” (24.2%) and “being too old to have more children” (20.5%).

Conclusions

This study provides a comprehensive assessment of childbearing intentions after a very preterm delivery, advocating for reproductive counselling policies supportive of family planning.

Key messages

Discrepancy between the ideal and actual childbearing intentions support the enhancement of reproductive healthcare services for family planning. Socioeconomic and age-related constraints were the main motives presented by mothers and fathers of very preterm infants for not wanting to have more children.

Support for decision-making on sharing health data for research: are data counsellors relevant?

Background

The implications of sharing one's health data are far-reaching. Potential applications of health data range from the delivery of treatments tailored to individuals' characteristics to improvements in public health, while also posing concerns about privacy, social justice and equity. Making informed decisions about health data sharing thus requires thorough consideration of the scientific, ethical and personal implications of donations. This study assessed participants' preferences regarding decision-making about health data sharing for research, including the need for support by data counsellors.

Methods

This observational cross-sectional study includes 159 patients and 479 carers followed at two reference centres for rare diseases in a Portuguese academic hospital, between June 2019 and March 2020. Participants were asked about preferred modes of decision-making: deciding on their own, deciding with support from another person, or delegating the decision to someone else. Those who responded the last two options also reported who they would choose for support or delegation: family or friends; a data counsellor; a professional with no specific training on data counselling; other. Data were analysed using descriptive and inferential statistics.

Results

The majority of respondents would prefer to decide with support (62%), 37% would prefer to decide on their own and 1% would opt to delegate the decision of sharing health data. Among those who expressed a preference for support, 60% would like to rely on a data counsellor. Carers, older and higher educated participants, and those with upper white-collar occupations and who were satisfied with their own health were significantly more likely to select data counsellors as their preferred source of support when engaging in decision-making about health data sharing for research (p &lt; 0.05).

Conclusions

This study supports recommendations for the creation of a new professional specialty of health data counsellors.

Key messages

Most participants express the need for support in making decisions about health data sharing for research, with 60% preferring support from a data counsellor. As a new professional specialism, health data counselling can help to advance informed public participation in health research.

Prevalence and economic burden of major comorbidities in multiple sclerosis

Background

Although comorbidity is important in Multiple Sclerosis (MS), few validated methods for its assessment exist. Our aim is to estimate the prevalence and economic burden of major comorbidities in people with MS (pwMS) in two Northern Italy study areas (Pavia, PV and Genoa, GE), using routinely collected healthcare data.

Methods

We estimated prevalence of comorbid conditions in pwMS in the period 2012-2017. Anxiety, depression, cancer, leukemia, lymphoma, hypertension, heart disease, cerebrovascular diseases, vascular diseases, ischemic stroke, hyperlipidaemia, bronchopathy, diabetes, gastropathy, gastric ulcer, autoimmune diseases, chronic renal failure, connective tissue diseases and HIV/AIDS were identified by a specific algorithm currently used for monitoring prevalence of chronic diseases by Italian Local Health Authorities (BDA system). Direct healthcare costs were defined by regional and governmental contracts; the aggregated healthcare expenditure was compared between pwMS with/without comorbidities.

Results

The MS cases identified were 2983, 2035 in GE and 948 in PV. 55.6% of pwMS had at least one comorbidity (50.6% GE and 66.5% PV, p &lt; 0.001). The most prevalent comorbidities were: depression (32.9%), hypertension (18.0%), cancer (10.9%), heart disease (7.8%), cerebrovascular diseases (7.0%) and hyperlipidaemia (6.1%). Comorbidity ranking was similar in the two provinces, although we observed significant differences considering specific prevalence rates. The mean direct healthcare costs of MS were substantially higher for individuals with comorbidity (36,463 €vs 26,284 €, p &lt; 0.001), showing 39% of additive costs.

Conclusions

Our study provides evidence of the burden of comorbidities in MS. Comorbidity is common in MS and produce additive costs.

Key messages

The use of administrative data for tracking the MS comorbidity could help knowledge gaps. When additivity situation is involved, preventive policies could lead to monetary savings.

Circulating endothelial progenitor cells as predictors of long-term cardiovascular mortality after myocardial infarction: which definition should we use?

Background

Endothelial progenitor cells (EPCs) are bone marrow-derived cells that play a crucial role in vascular repair after an acute myocardial infarction (AMI). Recent studies suggest that circulating EPCs levels may be useful as a surrogate biomarker for cardiovascular (CV) events. Nevertheless, the lack of a consensual definition and phenotypic characterization of EPCs hampers its use in clinical practice. CD34+KDR+, CD45dimCD34+KDR+ and CD34+CD133+KDR+ are among the most used antigenic phenotypes to define circulating EPCs but the best phenotype to predict CV outcomes remains to be determined.

Purpose

To determine the EPCs' surface phenotype that best predicts long-term CV death after an AMI, and to evaluate its optimal cut-off point.

Methods

One-hundred AMI patients were prospectively enrolled in the study. Circulating EPCs were quantified through high-performance flow cytometer within the first 24 hours of admission using different surface markers combinations allowing to simultaneously compare three EPCs definitions: 1) CD34+KDR+, 2) CD45dimCD34+KDR+, 3) CD34+CD133+KDR+. Mean follow-up time was 8.0±2.2 years.

Results

The mean age of our population was 59.7±11.0, the majority of patients were male (90%), 65% had ST-elevation myocardial infarction (STEMI) and 35% non-ST segment elevation myocardial infarction (NSTEMI). Diabetes mellitus was present in 38% and hypertension in 67% of the studied sample. During the long-term follow-up, 34 patients had re-admissions due to cardiovascular causes, 11 of them for AMI. Thirty-one patients had major adverse cardiovascular events (MACE) and 19 died.

Using ROC curves, the CD34+KDR+ phenotype showed the biggest area under the curve regarding prediction of CV mortality (0.722; p=0.010; confidence interval 95% (CI95%): 0.554 to 0.890). Patients with lower levels of EPCs according to this definition (≤0.022%) are 7 times more likely to die from CV causes at any time (hazard ratio = 7.55; p=0.008; CI95% 1.69 to 33.83).

Conclusion

The CD34+KDR+ phenotype appears to be the best definition of circulating EPCs for predicting long-term CV mortality after AMI. Further studies with larger samples are needed to clarify the optimal cut-off point for determining patients at risk and its role in everyday Cardiology.

Funding Acknowledgement

Type of funding sources: Foundation. Main funding source(s): Bolsa de Estudo João Porto da Sociedade Portuguesa de Cardiologia CD34+KDR+ as a predictor of CV death

Myocardial injury after pulmonary vein isolation: fire versus ice

Introduction

The cornerstone of atrial fibrillation (AF) catheter ablation is pulmonary vein isolation (PVI), either using point-by-point radiofrequency ablation (RF) or single-shot ablation devices, such as cryoballoon ablation (CB). However, achieving permanent transmural lesions is difficult and pulmonary vein (PV) reconnection is common. Elevation of high-sensitivity Troponin I (hsTnI) may be used as a surrogate marker for transmural lesions. Still, data regarding the comparison of hsTnI increase after PVI with RF or cryo-energy is controversial.

Purpose

The aim of this study is to compare the magnitude of hsTnI elevation after PVI with CB versus RF using ablation index guidance.

Methods

Prospective study of 60 patients admitted for first ablation procedure of paroxysmal or persistent AF in a single tertiary Cardiology Department. Thirty patients were submitted to PVI using CB and 30 patients were submitted to RF, using CARTO® mapping system and ablation index guidance. Patients with atrial flutter were excluded. Baseline characteristics were compared between groups, as well as hsTnI before and after the procedure.

Results

Mean age was 57.9±12.3 years old, 62% of patients were male and 77% had paroxysmal AF. There were no significant differences between groups regarding gender, age, prevalence of hypertension, dyslipidaemia, diabetes, obesity or AF type. There was also no significant difference in electrical cardioversion need during the procedure. HsTnI median value before ablation was 1.90±1.98 ng/dL. Postprocedural hsTnI was significantly higher in CB-group (6562.7±4756.2 ng/dL versus 1564.3±830.7 ng/dL in RF-group; P=0.001). Regarding periprocedural complications, there was only one case of mild pericardial effusion in RF-group associated with postablation hsTnI of 1180.0 ng/dL.

Conclusions

High-sensitivity Troponin I was significantly elevated after PVI, irrespective of the ablation technique. In CB-group, hsTnI elevation was significantly higher than in RF-group. This disparity may reflect more extensive lesions with cryoablation, without compromising safety. Longterm studies are needed to understand whether this hsTnI elevation is predictive of a lower AF recurrence rate.

Funding Acknowledgement

Type of funding sources: None.

Exogenous attention to social stimuli in the neurotypical population: The impact of autism traits

Introduction

Autism Spectrum Disorders (ASD) have been associated with decreased spontaneous attention to social stimuli. Several studies further suggest that a higher expression of autism traits (AT) in the neurotypical population (NTP) may also be related to decreased social attention, although the evidence is still scarce, especially when considering faces as task-irrelevant distractors.

Objectives

This study aimed to explore the relationship between the expression of AT in the NTP and exogenous attention to social stimuli.

Methods

Fifty-one adult participants were recruited and asked to complete the Autism Spectrum Quotient (AQ), to measure AT, and to perform an attentional capture task. In the latter, they were instructed to detect a target letter in the middle of perceptually similar (high perceptual load) or dissimilar (low perceptual load) distractor letters. In 25% of the trials, task-irrelevant distractors, consisting of images of faces (social) or houses (non-social), were shown flanking the letter stimuli.

Results

Response times were found to be affected by distractor-response compatibility, increasing for contralateral distractors, but decreasing for ipsilateral distractors, in relation to trials with no distractors (baseline). Importantly, these trends were magnified for distractor faces in the group with less AT, considering the social skills dimension of AQ, while the same tendency was observed in the group with higher AT, but for distractor houses.

Conclusions

Our results support an altered attentional performance in the subclinical phenotype of the autism spectrum. Furthermore, they also add to existing literature documenting similar attentional abnormalities in both the clinical and subclinical extremes of the spectrum, hinting possible shared mechanisms.

Disclosure

No significant relationships.

Mycosands: Fungal diversity and abundance in beach sand and recreational waters - Relevance to human health

The goal of most studies published on sand contaminants is to gather and discuss knowledge to avoid faecal contamination of water by run-offs and tide-retractions. Other life forms in the sand, however, are seldom studied but always pointed out as relevant. The Mycosands initiative was created to generate data on fungi in beach sands and waters, of both coastal and freshwater inland bathing sites. A team of medical mycologists and water quality specialists explored the sand culturable mycobiota of 91 bathing sites, and water of 67 of these, spanning from the Atlantic to the Eastern Mediterranean coasts, including the Italian lakes and the Adriatic, Baltic, and Black Seas. Sydney (Australia) was also included in the study. Thirteen countries took part in the initiative. The present study considered several fungal parameters (all fungi, several species of the genus Aspergillus and Candida and the genera themselves, plus other yeasts, allergenic fungi, dematiaceous fungi and dermatophytes). The study considered four variables that the team expected would influence the results of the analytical parameters, such as coast or inland location, urban and non-urban sites, period of the year, geographical proximity and type of sediment. The genera most frequently found were Aspergillus spp., Candida spp., Fusarium spp. and Cryptococcus spp. both in sand and in water. A site-blind median was found to be 89 Colony-Forming Units (CFU) of fungi per gram of sand in coastal and inland freshwaters, with variability between 0 and 6400 CFU/g. For freshwater sites, that number was 201.7 CFU/g (0, 6400 CFU/g (p = 0.01)) and for coastal sites was 76.7 CFU/g (0, 3497.5 CFU/g). For coastal waters and all waters, the median was 0 CFU/ml (0, 1592 CFU/ml) and for freshwaters 6.7 (0, 310.0) CFU/ml (p < 0.001). The results advocate that beaches should be monitored for fungi for safer use and better management.

Digital pathology in the immunohistochemical evaluation of biomarkers in breast cancer

Background

Currently, the evaluation of biomarkers HER-2 and ER is critical for targeting therapy for breast cancer and is performed by experienced pathologists, which takes time and causes a certain interobserver variability. The use of histological slide scanners coupled with the application of software for immunoexpression quantification can be profitable in pathological laboratories routine. This study aims to compare the quantification of HER-2 and ER immunoexpression employing automatic algorithms, using as standard the evaluation performed by a pathologist.

Methods

From the archive since 2016 to 2018 were retrieved 75 immunostained slides for HER-2 and 76 immunostained slides for ER with invasive breast carcinoma diagnosis. The slides were scanned in Aperio CS2 and the immunostaining signal was quantified in Aperio Imagescope using a membrane and nuclear algorithm, respectively. The concordance between the scores obtained and the previous assessment was calculated by Cohen’s Kappa coefficient as well as the sensitivity and specificity for each algorithm.

Results

Both algorithms showed an almost perfect concordance with the conventional method (k = 0.94 for HER-2; k = 0.92 for ER). Digital evaluations presented a sensitivity of 100% for both biomarkers, and a specificity of 100% for HER-2 and 80% for ER.

Conclusions

This assay showed that applying signal quantification software for HER-2 and ER in digitized slides is accurate, as these tools have potential to be implemented in laboratory routine. However, it will be necessary to increase the sample to obtain more reliable values and extend this study to the PR and Ki67 biomarkers since both carry prognostic and predictive information as well.

POS0640 EFFECTIVENESS AND SAFETY OF ORIGINAL AND BIOSIMILAR ETANERCEPT IN bDMARD-NAÏVE PATIENTS IN A REAL-WORLD COHORT OF PORTUGAL

Background:

The patent expiration of the original etanercept in Europe has facilitated the development of biosimilar products. Non-significant differences in efficacy and safety were noted in clinical trials which are not expected to influence clinical performance. Nonetheless, daily practice data should be gathered to support the claim for biosimilarity.

Objectives:

To compare the effectiveness and safety of original and biosimilar etanercept, in biological-Disease Modifying Antirheumatic Drug (bDMARD)-naïve patients.

Methods:

A retrospective multicenter non-interventional study, using data collected prospectively from Reuma.pt (The Rheumatic Diseases Portuguese Register) was done, including patients with: age ≥ 18 years old; diagnosis of Rheumatoid Arthritis (RA), Psoriatic Arthritis (PsA) or Spondyloarthritis (SpA) (axial or peripheral); active disease who initiated treatment with etanercept as first line of biological treatment after 2010. Kaplan-Meyer was used to calculate the persistence rate in treatment. Disease activity at baseline and follow-up data at 6, 12, 18 and 24 months of treatment was compared using the chi-square for categorical variables and t-student or Mann-Whitney tests for continuous variables. Reasons for discontinuing therapy were summarized using descriptive statistics. Statistical significance was assumed for 2-sided p-values >0.05.

Results:

We included 1694 patients (413 on biosimilar and 1280 on original etanercept) 864 with RA, 335 with PsA and 494 with SpA. The population’s baseline characteristics were not significantly different among both groups, except concomitant treatment in RA (higher use of conventional DMARDs in biosimilar group and higher use of NSAIDs in original group) and in SpA patients (higher use of corticosteroids in original group).

At baseline, a higher joint count was found in patients treated with original etanercept with a statistical difference for swollen (p=0.03) and tender (p=0.01) joints count (SJC and TJC, respectively) in RA and in TJC in SpA patients (p=0.02). In RA patients, CDAI and SDAI were higher in patients who started original (p=0.03; p=0.04, respectively). Pain measured by visual analogic scale was higher in SpA patients treated with biosimilar (p=0.03).

The 3-year PR was not significantly different between both treatment groups in RA, PsA and SpA (Figure1). In RA, PR in biosimilar was 72.6%, with a median time-on-drug (TOD) of 28.3 months; for original etanercept PR was 63.6%, with a median TOD of 27.4 months (p=0.566). In PsA patients, the PR for biosimilar was 70.6%, with a median TOD of 27.6 months, and in original drug 67.0%, with a median TOD of 28.1 months (p=0.743). In SpA patients, the PR were 78.4% for biosimilar (median TOD of 27.4 months) and 71.5% for original treatment (median TOD of 28.0 months (p=0.816)).

Figure 1.

Drug survival in biosimilar and original etanercept in Rheumatoid Arthritis, Psoriatic Arthritis and Spondyloarthritis

In RA patients, we did not find differences between the two treatment groups for the proportion of patients in remission or low disease activity by CDAI ≤10, SDAI≤11 or DAS28 <3.2 at 6, 12, 18 and 24 months of treatment. For PsA, no differences were found in the same timelines for DAPSA≤14, DAS28<3.2, BASDAI<4, ASDAS<2.1 or PsARC response. Also, in SpA patients, no differences were found in BASDAI<4, BASFI<4, ASDAS<2.1, ASDAS response and BASDAI response in all the timelines with the exception of BASDAI response at 18 months, which was achieved in fewer patients in biosimilar therapy (p=0.02).

Overall, 535 (31.6%) patients stopped etanercept (428 patients on original and 107 patients on biosimilar). Discontinuations due to inefficacy were the most frequent, but there were no significant differences between both groups as for adverse events. Discontinuations due to “other reasons” were higher for the original group, both in RA (p=0.01) and in SpA (p=0.04).

Conclusion:

Biosimilar and original used as first-line biological treatment showed similar effectiveness and safety in our long-term cohort of patients with RA, PsA, and SpA

Disclosure of Interests:

None declared

The burden of heat-related mortality attributable to recent human-induced climate change

Climate change affects human health; however, there have been no large-scale, systematic efforts to quantify the heat-related human health impacts that have already occurred due to climate change. Here, we use empirical data from 732 locations in 43 countries to estimate the mortality burdens associated with the additional heat exposure that has resulted from recent human-induced warming, during the period 1991-2018. Across all study countries, we find that 37.0% (range 20.5-76.3%) of warm-season heat-related deaths can be attributed to anthropogenic climate change and that increased mortality is evident on every continent. Burdens varied geographically but were of the order of dozens to hundreds of deaths per year in many locations. Our findings support the urgent need for more ambitious mitigation and adaptation strategies to minimize the public health impacts of climate change.

Cardiopulmonary exercise testing in repaired tetralogy of Fallot: a valuable tool for pulmonary regurgitation severity assessment

Funding Acknowledgements

Type of funding sources: None.

Introduction and purpose

The optimal timing for pulmonary valve replacement (PVR) in asymptomatic patients with repaired tetralogy of Fallot (TOF) and pulmonary regurgitation (PR) remains uncertain but is often guided by imaging characterization of the right ventricle. As cardiopulmonary exercise testing (CPET) performance is an accessible prognostic indicator, we assessed which CPET parameters best correlate with pulmonary regurgitation severity to potentially improve identification of high-risk patients.

Methods

A retrospective chart review was done from 2009 to 2018 on adult patients with repaired TOF who underwent maximal effort cardiopulmonary exercise testing with cycle ergometry and with concurrent pulmonary function testing. Demographics, standard measures of CPET interpretation, and major cardiovascular outcomes were collected.

Results

Cardiopulmonary exercise testing was performed in 54 adult repaired TOF patients (59% male), with a mean follow-up of 60 ± 33 months. The mean age was 34 ± 9 years. 30 patients (56%) had severe pulmonary regurgitation and 26 patients (48%) were submitted to PVR, with a 0% mortality rate. PVR was performed a mean 28 ± 7 years after TOF repair surgery. There was moderate to severe right ventricular dysfunction in 11 patients (20%). 12 patients (22%) had a hospitalization for heart failure. Arrhythmic events occurred in 9 patients (17%), mainly atrial fibrillation or atrial flutter (67%). 2 patients (4%) received an implantable cardioverter-defibrillator for secondary prevention of sudden cardiac death.

Peak VO2 consumption (pVO2) showed no statistically significant correlation with severity of pulmonary regurgitation (HR 0.26, 95% CI 0.879-1.036, p= 0.262) or PVR (HR 0.92, 95% CI 0.829-1.028, p = 0.914), while percent of predicted pVO2 significantly correlated with severity of pulmonary regurgitation (HR 0.95, 95% CI 0.918-0.993, p = 0.020) and PVR (HR 0.94, 95% CI 0.886-0.992, p = 0.025).

VE/VCO2 slope was not a significant predictor of severity of pulmonary regurgitation (HR 1.03, 95% CI 0.929-1.130, p = 0.622) or PVR (HR 1.04, 95% CI 0.952-1.128, p = 0.414) or) and neither cardiorespiratory optimal point (HR 0.94, 95% CI 0.786-1.120, p = 0.480) nor maximum end-tidal carbon dioxide pressure (PETCO2) (HR 0.93, 95% CI 0.846-1.037, p = 0.213) correlated with severity of pulmonary regurgitation or PVR.

Conclusion

Percent of predicted peak VO2 had the highest predictive power of all CPET parameters analysed in adult repaired TOF patients. Preoperative CPET could be an accessible way to identify high-risk patients earlier for PVR and should therefore be included in the routine assessment of these patients.

Exercise end-tidal carbon dioxide pressure: a new prognostic marker after acute myocardial infarction?

Funding Acknowledgements

Type of funding sources: None.

Background

Although several cardiopulmonary exercise testing (CPET) parameters have already proved to predict prognosis, there is increasing interest in finding variables that do not require maximal effort. End-tidal carbon dioxide pressure (PETCO2), an indirect indicator of cardiac output, is one of such variables. Studies in heart failure populations already suggest its role as a prognostic factor. However, data concerning other populations are still scarce.

Purpose

To assess the association between exercise PETCO2, cardiac biomarkers and systolic function following acute myocardial infarction (AMI) and to evaluate its potential prognostic role in this population.

Methods

A retrospective single-centre analysis was conducted including patients who underwent symptom-limited CPET early after AMI. We assessed PETCO2 at baseline (PETCO2-B), at anaerobic threshold (PETCO2-AT) and at peak exercise and calculated the difference between PETCO2-AT and PETCO2-B (PETCO2-difference). We analysed their association with B-natriuretic peptide (BNP), maximal troponin after AMI as well as with left ventricular ejection fraction (LVEF) 1 year after.

Results

We included 40 patients with a mean age of 56 years (87.5% male), assessed with CPET a median of 3 months after AMI (80% of which were ST-elevation myocardial infarctions). Average respiratory exchange ratio was 1,1 with 48% of patients not reaching maximal effort. Mean PETCO2-AT was 37mmHg, with a mean increase from baseline of 6mmHg (PETCO2-difference). There was a significant positive correlation between all the PETCO2 variables measured and BNP values at time of AMI and on follow-up (best correlation for PETCO2-AT with BNP at AMI hospitalization, r = 0.608, p &lt; 0.001). Maximal troponin was not correlated with PETCO2. Both PETCO2-AT and PETCO2-difference were significantly and positively correlated with LVEF 1-year post-AMI (r = 0.421, p = 0.040 and r = 0.511, p = 0.011, respectively).

Conclusion

PETCO2-AT and PETCO2-difference are both correlated with BNP, an established prognostic marker, and with medium-term systolic function after AMI, suggesting their potential prognostic role in this population. Further studies with larger samples are required to confirm the results of this pilot study and assess PETCO2 as a definite predictor of prognosis after AMI.

Ambivalence among intergenerational relationships in old age

Introduction

This study focuses on ambivalence among intergenerational relationships in old age.

Objectives

This study aims to analyze the perspectives of intergenerational relationships between older adults and adult children. For this purpose, a qualitative research was carried out, which analyzes these relations at a cross-national level.

Methods

Four hundred and twenty four older participants aged 65-97 years, were interviewed. Participants were of three different nationalities and lived in the community. All the interviews went through the process of verbatim transcription and subsequent content analysis.

Results

Two dimensions of generational ambivalence were revealed from the study; support and the conflict dimensions. Findings of content analysis produced six themes, which represent intergenerational relations between older adults and adult children: older adults-adult children interaction quality; family integration; care and support; definition of limits; distance and alienation; and communication difficulties.

Conclusions

This study highlighted the diversity of experiences in old age, in relation to intergenerational relationships and underlined the conflicting expectations from older adults in relation to their adult children.

Disclosure

No significant relationships.

Studying bone mineral density in young people: The complexity of choosing a pQCT reference database

BACKGROUND

Many chronic illnesses affect bone health, and commonly lead to mineralization abnormalities in young people. As cortical and trabecular bone may be differentially affected in certain diseases, an imaging technique that allows for detailed study of the bone structure is required. Peripheral quantitative computed tomography (pQCT) overcomes the limitations of dual energy X-ray absorptiometry (DXA) and is perhaps more widely available for use in research than bone biopsy. However, in contrast to DXA, where there are large reference datasets, this is not the case for pQCT.

METHODS

Fifty-five children and young adults aged 7 to 30 years had the non-dominant tibia scanned at the 3% & 4% sites for trabecular bone mineral density and the 38% site for cortical bone mineral density and bone mineral content. Image acquisition and analysis was undertaken according to the protocols of two of the largest reference datasets for tibial pQCT. The Z-scores generated were compared to examine the differences between protocols and the differences from the expected median of zero in a healthy population.

RESULTS

The trabecular bone mineral density Z-scores generated by the two protocols were similar. The same was true for cortical mineral content Z-scores at the 38% site. Cortical bone mineral density was significantly different between protocols and likely affected by differences in the ethnicity of our cohort compared to the reference datasets. Only one reference dataset extended from childhood to young adulthood. Only trabecular bone mineral density, periosteal and endosteal circumference Z-scores from one methodology were not significantly biased when tested for deviation of the median from zero.

CONCLUSIONS

pQCT is a useful tool for studying trabecular and cortical compartments separately but, there are variations in pQCT scanning protocols, analysis methodology, and a paucity of reference data. Reference datasets may not be generalizable to local study populations, even when analysed using identical analysis protocols.

Clinical characteristics and outcome of hospitalized patients with SARS-CoV-2 infection at Toulouse University hospital (France). Results from the Covid-clinic-Toul cohort

Background

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has spread worldwide from epicenter of Wuhan, China since December 2019. The aim of our study was to describe the clinical characteristics and outcome of hospitalized patients with SARS-CoV-2 pneumonia at the Toulouse university hospital, France.

Patients and methods

We selected the patients included from March 7, 2020 to April 20, 2020 in the retrolective Covid-clinic-Toul cohort that follows all hospitalized patients with SARS-CoV-2 infection at the Toulouse Hospital. Cases were confirmed by real-time reverse transcriptase polymerase chain reaction. We report demographics, clinical, biological and radiological features, as well as unfavorable outcome at Day 14 after admission (admission in an intensive care unit, mechanical ventilation, death).

Results

Among 263 hospitalized patients, the median age was 65 years and 155 (58.9%) were males. Two hundred and twenty-seven patients (86.3%) had at least one comorbidity. The median time from first symptom to hospital admission was 7.0 days (interquartile range: 4–10). On day 14 after admission, 111 patients (42.2%) had been transferred to intensive care unit (ICU), including 50 (19.0%) on Day 1; 61 (23.1%) needed mechanical ventilation and 19 patients (7.2%) had died. Patients admitted to ICU at Day 1 of admission (n = 50) were more frequently men (66.0% vs 57.3%), smokers (25.0% vs 7.1%), with obesity (42.0% vs 24.7%) and had a higher mean level of C-reactive protein (median: 110.9 mg/L vs 46.2 mg/L).

Conclusion

This cohort provides epidemiological data on SARS-CoV-2 in hospitalized patients in a University hospital in the South of France.

Individual preparedness for natural disasters: a cross-sectional study from Portugal

Background

Individual preparedness is critical in mitigating the adverse effect of natural disasters (ND). Factors influencing preparedness are complex and multifaceted, with certain groups having different needs and vulnerabilities. We aimed to explore the factors associated with individual ND preparedness in residents from Vila Nova Gaia (VNG), Portugal.

Methods

A cross-sectional study was conducted in VNG, Portugal, in January 2020 (N = 192; ≥18 years). Data on sociodemographic characteristics, risk perception, and preparedness were collected using a structured questionnaire, in parishes randomly selected. Crude and adjusted odds ratio (OR) and respective 95% confidence intervals (CI) were estimated using logistic regression models.

Results

About 33% of participants aged ≥65 years and 66% had low education. Results show that 20% had a survival kit. In univariate comparisons, older (11% vs. 24%, p=.029) and lower educated participants (≤12th grade: 13% vs. &gt;12th grade: 32%, p=.002) were less likely to have a survival kit; only education remained associated after adjustment for age (OR = 2.61, 95%CI:1.22-5.58). About 21% had a family plan for disaster and only education level is associated (≤12th grade: 17% vs. &gt;12th grade: 29%, p=.040). Almost 35% had a family member with basic life support training; older age, lower education and higher risk perception were negatively associated and these remained after adjustment (≥65 vs. &lt;65 years OR = 0.36, 95%CI:0.16-0.77; ≤12th vs. &gt;12th grade OR = 0.40, 95%CI:0.21-0.78; risk perception OR = 0.66, 95%CI:0.45-0.95). Only 22% participated in community drills; older people (6% vs. 31%, p&lt;.001) and less educated (14% vs. 39%, p&lt;.001) were less likely to have ever participated, which persisted in multivariate model.

Conclusions

Our findings revealed a low-level of ND preparedness, and older and less educated people seem to present worse preparedness. This highlights the need to design specific public health interventions among these groups.

Key messages

We found a low-level of individual preparedness for natural disasters in VNG, Portugal. Community-based public health interventions are needed to improve individual preparedness for natural disasters. Specific interventions targeting older and less educated people should be designed to decrease their vulnerability facing a natural disaster.

Influenza burden estimates in Portugal: seasons 2013/14 to 2018/19

Background

Reliable influenza burden estimates are essential for a true understanding of the influenza epidemics' impact; informed decision-making and effective risk communication. This study aimed to estimate the influenza burden in Portugal in 2013/14 - 2018/19 seasons.

Methods

We estimated seasonal influenza burden, ranging from medically attended influenza cases in primary care to influenza-attributable deaths, using surveillance data. Data were collected for influenza like illness (ILI) epidemic periods, determined by the Moving Epidemic Method. Medically attended influenza cases were estimated by multiplying the number of ILI cases in primary care by the percentage of influenza-positive samples. Hospitalized severe acute respiratory infections (SARI) positive for influenza estimates were computed, multiplying the number of SARI by the percentage of influenza-positive samples. To determine influenza-attributable deaths, a Poisson regression model was used.

Results

The median number of medically attended influenza cases in primary care was 33,668 (325.8 cases per 10,000 population), ranging between 21,393 in 2017/18, [Influenza B and A(H1) co-dominance] and 61,768 in 2014/15 [Influenza B and A(H3) co-dominance]. The median number of SARI positive for influenza was 8,724 (84.4 cases per 10,000 population), ranging between 7,099 in 2013/14 [A(H1) and A(H3) co-dominance], and 9,125 in 2014/15. The median number of influenza-attributable deaths was 3,311 (32.0 cases per 10,000 population), ranging between 96 in 2015/16 [A(H1) dominance], and 5,224 in 2014/15.

Conclusions

Higher mortality, and higher rate of medically attended influenza cases, were found in seasons with A(H3) circulation. Little variability was observed in the number of influenza-positive SARI. The relationship between the number of SARI and the number of deaths requires further investigation. This work highlights the need of health surveillance systems for a better understanding of the influenza impact.

Key messages

Lower burden of influenza is found in seasons with A(H1) co-dominance. Higher burden of influenza is found in seasons with A(H3) circulation. Health surveillance systems are essential to provide data for a better understanding of the epidemiology and extent of seasonal influenza.

Public preferences for involvement in the governance of health data

Background

Public involvement in the governance of epidemiological and public health studies can foster needs-driven research, enhance participants' recruitment, reduce attrition and improve the quality of and ethics in research and surveillance. However, it can also reinforce health inequalities if it fails to ensure public representation across socioeconomic gradients. This study aimed to assess patients' and carers' preferences for involvement in collective health data governance, and its associated factors, to strengthen the evidence base for policy development.

Methods

Between June 2019 and January 2020, 644 people (157 patients and 487 carers; participation rate=89.3%) followed at two reference centres for rare diseases in a university hospital from Northern Portugal were enrolled in an observational cross-sectional study. Data about willingness to participate in data governance was collected through four intersecting options: periodic or sporadic meetings, by either giving opinions (consultation) or participating in decision-making (deliberation). Data were analysed using descriptive and inferential statistics.

Results

From a total of 629 respondents, 39% are willing to get involved through at least one of the four participatory options and 16% do not want to participate. Patients and carers do not differ in their preferences for involvement. Sex and education are associated with willingness to participate, after adjustment for participant type (patient/carer), occupation and trust in national and international institutions (OR:1.60; 95%CI 1.05-2.45 for men vs. women and OR:1.65; 95%CI 1.07-2.56 for &gt;12 vs. ≤12 educational years). Participants' preferred option for participation is consultative sporadic meetings (29.5%).

Conclusions

Anticipating which social groups are likely to become under-represented in participatory exercises is crucial to inform policy aimed at promoting inclusive involvement in health data governance.

Key messages

Men and higher educated participants are more willing to participate. Forecasting potential for subgroup under-representation is crucial to develop policy for inclusive participatory data governance.

Benefits and risks of sharing genetic data for research purposes: the views of patients and carers

Background

Public health genomics research has the potential to predict, prevent, diagnose and treat a large number of diseases. This demands access to large genomic datasets. Understanding people's motivations for and concerns with sharing genetic data is essential to promote engagement and to develop ethical, legal and social frameworks for genomic research. This study aims to assess patients' and carers' views about the benefits and risks associated with genetic data sharing for research purposes.

Methods

A cross-sectional study was performed with 157 patients and 487 carers (participation rate=89.3%) followed at two rare genetic diseases reference centres in Portugal (June 2019-January 2020). Participants selected, from five options, the two most important benefits and risks associated with sharing genetic data for research. Data were analysed using descriptive and inferential statistics.

Results

Potential to discover a cure for untreatable diseases was viewed as the most relevant benefit by patients and carers (87%), followed by the possibility to develop new drugs and treatments (46%). Lack of security and control regarding access to information was the most reported risk (63%), particularly by patients, younger participants, students and those less willing to share their data (p &lt; 0.05). The possibility of extracting information that exceeds the research objectives was the second most reported risk (58%), specifically by carers, participants with high education, employed, with upper white-collar occupations and who were involved in patient organizations (p &lt; 0.05).

Conclusions

Young patients' concerns about data security and control may reduce their willingness to share genetic data. Socially advantaged carers worry about their data being used for purposes other than research. Assessing patients' and carers' views about genetic data sharing is important to meet their expectations for data protection and use and to guarantee respect for their rights.

Key messages

Patients and carers expect genetic research to contribute for discovering a cure for untreatable diseases and for developing new drugs and treatments. Patients are concerned about genetic data security and control and carers are worried about their genetic data being used for purposes other than research.

Participation in data generation and information sharing: are patients and carers willing to engage?

Background

Health systems are moving towards a personalisation of care. Personalised care relies on data-intensive research, which depends on active participation by citizens in data generation and information sharing. Collecting and sharing one's data for research can deliver several benefits. However, it also comes at a cost in time and effort that may burden different population subsets to varying degrees. This study aimed to assess patients' and carers' willingness to generate and share health data, and its associated factors, to inform the design of inclusive engagement strategies.

Methods

A cross-sectional study was performed with 157 patients and 487 carers (participation rate=89.3%) followed at 2 rare diseases reference centres in Portugal (06/2019-01/2020). Participants were asked about willingness to collect their health data. Those who responded yes/maybe also reported, from 0 (not willing) to 4 (always willing), on willingness to share it for the following purposes: diagnosis/treatment, non-profit research and for-profit research related to their disease and to other diseases. Data were analysed using descriptive and inferential statistics.

Results

From 567 respondents, 42.7% are willing to collect their health data, 34.7% are unsure and 22.6% do not want to participate in data generation. More educated participants, with white-collar occupations, satisfied/very satisfied with their health and those with higher social trust levels are significantly more willing to engage in data collection (p &lt; 0.05). Participants are less prone to share information for for-profit research on their disease (Median[P25-P75]: 3.0[2.0-4.0]) or others (Median[P25-P75]: 2.0[1.0-3.0]), in particular carers (p &lt; 0.05).

Conclusions

Participants are more willing to share information for diagnosis/treatment and non-profit research. Efforts to engage people in data generation and sharing should be directed towards disadvantaged groups to reduce biases related to skewed populations.

Key messages

Willingness to participate in data generation and sharing is influenced by social indicators. Engagement by less advantaged groups should be promoted to avoid biases related to skewed populations.

Evaluation of the effect of fluorinated tooth bleaching products using polarized Raman microscopy and particle induced gamma-ray emission

In this in vitro study, the effect of the application of tooth bleaching products in human enamel was evaluated using polarized Raman microscopy, particle induced gamma-ray emission (PIGE) and Vickers Hardness test. Due to their acidic nature, teeth whitening products are associated with changes in enamel mineralization. Consequently, products have appeared in the market that promote the incorporation of fluorine in order to decrease the solubility of the hydroxyapatite in enamel and prevent demineralization. This way, four commercial products with different active principle concentrations: 16% carbamide peroxide (Opalescence PF® and VivaStyle®) or 6% hydrogen peroxide (Opalescence Go PF® and VivaStyle Paint On®) and presence or not of fluorine were compared. The information on the crystalline state of the enamel was provided by the determination of the depolarization ratio of the symmetric stretching band of phosphate (at 959 cm^-1). Furthermore, the content and uptake of F was evaluated using PIGE in the two fluorinated products as well as in one negative control group. In order to evaluate the microhardness of enamel by means of Vickers test, another group of polished samples was prepared (using Opalescence PF®) and evaluated. Conversely to what could be expected, the obtained results determined a statistically significant decrease of depolarization ratio, leading to an increase of mineralization after the application of the bleaching products, except for VivaStyle®. For this group, no significant variation was obtained before-after treatment, most likely due to the acidity of the product (pH = 5.8). Additionally, an increase of concentration of F in the dental tissues was determined for the fluorinated products. On the other hand, enamel polishing, required for the application of the Vickers test, led to increased susceptibility to erosion, resulting in decreased hardness and an increased enamel depolarization ratio.

Multidisciplinary model for hospital-territory integrated management of patient with bone fragility: primary and secondary prevention of fractures according to severity and complexity

The aim of this study was to promote the construction of a real network and a shared diagnostic and therapeutic management model between hospitals and out-of-hospital healthcare services to capture as many patients with bone fragility as possible. Starting from the analysis of the clinical competences present in the province of Pavia, the bone specialists (BSs) organized some educational events involving both general practitioners (GPs) and hospital specialists. The Fracture Liaison Service (FLS) model, the revision of Note 79, the national plan for chronicity and the health reform of the Lombardy Regional Authority supported the structure of our model, in which the roles of clinicians are well defined and based on the complexity and severity of patients. In our method the GP has a central role as clinical manager, facilitating patient management and communication between the specialists and the BS. In January 2019, the Therapeutic Care Diagnostic Path (PDTA) shared between 2 bone specialists (BSs), 9 GPs, as reference treaters, and a multidisciplinary group of 25 specialists of the Province of Pavia was defined. The strategic directions of the two largest public hospitals in Pavia have supported the PDTA, which was validated by the quality departments of the hospitals themselves. Finally, sixty GPs belonging to the network have joined the PDTA. This model is the first example of integrated management between hospitals and out-of-hospital healthcare services for the primary and secondary prevention of fragility fractures (FF), where the GPs play a pivotal role as managers and supervisors to ensure proper care to chronic patients according to their levels of severity.

AB0218 FUNCTIONAL DISABILITY AND PAIN BUT NOT DISEASE ACTIVITY ARE ASSOCIATED WITH POOR HEALTH-RELATED QUALITY OF LIFE IN A COHORT OF RHEUMATOID ARTHRITIS PATIENTS

Background:

Rheumatoid Arthritis (RA) is a systemic autoimmune disease that presents with joint pain and inflammation leading to significant disability and poor health-related quality of life (HRQoL) (1,2). Optimizing long-term HRQoL is the primary goal of disease management in RA (3).

Objectives:

To evaluate HRQoL and identify its influencing clinical and demographic factors in a Portuguese RA population.

Methods:

This is a cross-sectional study including consecutive patients fulfilling the ACR/EULAR 2010 and/or ACR 1987 RA classification criteria, followed at a tertiary Rheumatology Department. Sociodemographic and clinical variables were collected. HRQoL was assessed using the EuroQoL 5-Dimensional Descriptive System (EQ-5D) total score (normal range from -0.496 to 1.000, lower values indicating poorer HRQoL). Independent t-test and Pearson’s correlation coefficient were performed to evaluate EQ-5D differences between groups and examine its relationships with continuous variables, respectively. Variables with p<0.1 in univariate analysis were included in a stepwise multiple linear regression analysis to evaluate the independent association of variables with the EQ-5D score.

Results:

358 RA patients were included (80.20% female, mean age ± SD: 63.22 ± 0.66 years old). Mean EQ5D total score ±SD was 0.48 ± 0.01. Based on EQ-5D domains, 0.60% reported extreme problems with mobility, 3.40% extreme problems with self-care, 2.50% extreme problems with usual activities, 12.0% extreme pain or discomfort, and 7.30% extreme anxiety or depression symptoms (Fig. 1). There was a significant difference in EQ-5D scores between male (M=0.55, SD=0.24) and female gender (M=0.46, SD= 0.27); t (356) = -2.41, p=0.016. EQ-5D was weakly correlated with DAS-28-CRP (r=-0.32; p<0.001), moderately correlated with patient’s global assessment of disease activity (r=-0.54; p<0.001) and pain-visual analogue scale (pain-VAS) scores (r=-0.58; p<0.001) and strongly with Health Assessment Questionnaire (HAQ) score (r=-0.72; p< 0.001). After multivariate analysis, HAQ-score (β=-0.57 [95% CI -0.24 to -0.17]; p<0.001) and pain-VAS ((β=-0.25 [95% CI -0.003 to -0.002]; p<0.001) remained as independent predictors of EQ-5D (R2=0.56, p<0.001).

Conclusion:

Greater functional impairment and pain are associated with poor HRQoL in RA patients, and thus special attention must be given to treatment strategies providing the best patient-centred outcomes.

References:

[1]Yaghoubi et al. J Cardiovasc Thorac Res 2012;4(4):95–101.

[2]José E et al. Ann Rheum Dis 2018;1118–24.

[3]Smolen JS et al. Ann Rheum Dis. 2010; 69:631–637

Disclosure of Interests:

Ana Rita Prata: None declared, Helena Assunção: None declared, Mariana Luis: None declared, Luisa Brites: None declared, Flavio Costa: None declared, João Dinis de Freitas: None declared, Stefanie Silva: None declared, José Antonio P. da Silva Grant/research support from: Pfizer, Abbvie, Consultant of: Pfizer, AbbVie, Roche, Lilly, Novartis, Catia Duarte: None declared

Socioeconomic position and quality of life among older people: The mediating role of social support

Social support can obscure social gradients in health, but its role as a mediator between socioeconomic position (SEP) and quality of life (QoL) in older populations remains unknown. We aimed to examine to what extent social support mediates the association between SEP and overall QoL among older adults (aged 60-84 years). We studied a population-based cohort of 585 noninstitutionalized adults in Porto, Portugal, who were evaluated in 2009. Education, occupation, and perceived income adequacy were used as SEP indicators. The WHOQOL-OLD was used to determine overall QoL. Social support was assessed using the Multidimensional Scale of Perceived Social Support. Path analysis was conducted to quantify direct, indirect, and total effects of SEP on QoL. There was a positive total effect of education on QoL (β = 0.28; 95% CI: 0.05-0.48). In this model, we found an indirect effect through social support (β = 0.15; 95% CI: 0.05-0.26), explaining 54% of the pathway between education and QoL. A similar pattern was identified for the association between occupation and QoL. Perceived income adequacy had a total effect of 2.74 (95% CI: 1.68-3.93) on QoL. Although an indirect effect through social support was found (β = 0.98; 95% CI: 0.42-1.55), a direct effect from this variable remained (β = 1.76; 95% CI: 0.65-2.90). Social support can be a mechanism through which SEP impacts the QoL of older people. Strengthening social support ties may attenuate the impact of social inequalities and improve the QoL of this population.

AB0179 BEYOND DISEASE ACTIVITY, PAIN, “TIME” AND “TIMING” ACCOUNT FOR DISABILITY IN PATIENTS WITH RHEUMATOID ARTHRITIS: RESULTS FROM A REAL-LIFE COHORT

Background:

Patients with rheumatoid arthritis (RA) suffer from joint pain, stiffness and fatigue and are therefore limited in their physical activities. Since functional disability is a major determinant of quality of life in patients with RA, an optimized approach should focus on the maintenance of functional ability.

Objectives:

To evaluate self-reported disability in RA patients and to identify its influencing clinical and demographic factors in a real-life cohort of patients with RA.

Methods:

Cross-sectional study of consecutive patients with RA fulfilling the ACR/EULAR 2010 and/or ACR 1987 RA classification criteria, followed in a Portuguese tertiary care centre. Variables collected included socio-demographic and clinical variables (disease duration; time from symptoms onset to diagnosis, classified as short (≤ 2 years) and long (> 2 years); time of diagnosis, categorised as <2000, 2000-2009, ≥2010); DAS28-CRP-3V and its individual components; pain assessed through visual analogue scale (0-100 mm) and self-perception of anxiety/ depression through EQ5D dimension 5. Disability was assessed through Health Assessment Questionnaire (HAQ) score and categorised as none-to-mild (<1) or moderate-to-severe (1-3). Comparison between groups was assessed through chi-square or T-student test, as adequate. Variables with p<0.1 and others clinically relevant in the researcher’s perspective were included in a multivariable logistic regression model. Previously to the analysis, all the assumptions were verified. Given the implementation of new strategies regarding diagnosis and treatment of RA in the last decade, a subgroup analysis was performed for patients with diagnosis performed after 2010).

Results:

A total of 251 patients were included (78.9% female, aged 62.0±12.1 years, disease duration 16.7±11.2 years), with a mean DAS28-CRP-3V of 2.24 ±0.87, with 65.3% being in remission or low disease activity. The mean HAQ score was 1.2±0.8. Over half of the patients (56.2%) reported moderate-to-severe disability. In the univariate analysis, moderate-to-severe disability was more frequent in female patients (60.6% vs 39.6%, p<0,006), in patients with moderate-to-severe self-perception of anxiety/depressive symptoms (67.2% vs 44.2%, p<0.001) and in patients with diagnosis before the year 2000, 2000-2009 than ≥2010 (71.4% vs 63.1% vs 36.7%; p< 0.001). In addition, patients with moderate-to-severe disability tended to be older (65.05 vs 57.98, p<0,001), to have longer disease duration (20.07 vs 12.39, p <0.001), to report more pain (VAS 58.08 vs 28.62, p<0.001) and to have higher disease activity (2.48 vs 1.95, p=0.001). In the multivariable analysis, pain (OR=1.04; 95%CI 1.03-1.06, p<0.001), disease activity (OR=1.51; 95%CI 1.01-2.26, p=0.049), and time of diagnosis (OR=0.553, 95%CI 0.38 -0.81, p=0.002) remained as independent factors associated with moderate-to-severe disability (R2: 0.40, p<0,001). In the subgroup of patients diagnosed after 2010, a longer time to diagnosis (>2 years) (OR=7.97, 95%CI 1.88-34.06; p=0.005) and pain (OR=1.05, 95%CI 1.03-1.08; p<0,001) remained as independent factors (R2= 0.44, p=<0.001).

Conclusion:

Functional disability remains a major problem in our patients with RA, despite clinical remission. Beyond non-modifiable factors, disease activity and pain are associated with higher disability. Moreover, in the subgroup of patients diagnosed after 2010 a long time to diagnosis was the major predictor of disability. However, a large variance of the reported functional disability remains unexplained. Hence, other factors should be properly evaluated in our patients in order to achieve a more holistic approach aiming at reducing functional disability.

Disclosure of Interests:

Helena Assunção: None declared, Ana Rita Prata: None declared, Mariana Luis: None declared, Luisa Brites: None declared, João Dinis de Freitas: None declared, Flavio Costa: None declared, Stefanie Silva: None declared, José Antonio P. da Silva Grant/research support from: Pfizer, Abbvie, Consultant of: Pfizer, AbbVie, Roche, Lilly, Novartis, Catia Duarte: None declared

Effects of mental practice strategies associated to physiotherapy on gait and risk of falls in Parkinson’s disease: a pilot study of a randomized clinical trial

Introduction Parkinson’s Disease (PD) is a degenerative disorder that interferes with the voluntary movements due to dysfunction of the basal ganglia and presenting with motor signals, such as the reduction of gait speed. This contributes to an increased risk of falls. In rehabilitation, mental practice (MP) has been shown to promote plastic modulation of neural circuits and improve motor learning, but the results of research with MP in PD are still ambiguous due to the diversity of intervention strategies.

Objectives To compare the effects of MP strategies associated to physiotherapy in gait and risk of falls in PD patients.

Methodology We performed a pilot study of a clinical randomized, single blind, trial, conducted in accordance with the consort checklist. Patients with idiopathic PD were included and allocated to four groups: Control group (CG); Group with mental practice guided by images (MPI); Group with mental practice guided by audio (MPA); group with mental practice without a guide (MPWG). The subjects of the experimental groups were submitted to 15 sessions of physiotherapy and mental practice, while the CG received only physiotherapy. The sessions were held 2 times per week, 40 minutes for physiotherapy and approximately 5-10 minutes for the corresponding mental practice protocol. Spatial-temporal parameters of gait were assessed with the 10 meters Walking Test (TC10m), and the risk of falls was evaluated with the Timed Up and Go (TUG) test.

Results The MPI group showed significant results for the parameters time (p = 0.027) and speed (p = 0.025) when compared with the results of the CG. No main effects for the group were observed concerning cadence and risk of falls had. Groups MPWG and MPA showed no significant results for the TC10m and TUG when compared with the CG.

Conclusion The results of this pilot study suggest that MP guided by images associated to physical therapy was more effective to increase the gait speed than the alternative strategies.

Assessing the use and understanding of the Portuguese heat-health warning system (ÍCARO)

BACKGROUND

Heatwaves can lead to increased mortality. In the Portuguese heat-health warning system (HHWS), ÍCARO, a daily report with heat-related mortality prediction is sent to heat-health action plan (HHAP) practitioners. HHAP practitioners assess risk and implement measures to prevent heatwave-related impact, but ÍCARO's use and understanding are unknown. We assessed ÍCARO's use and understanding by key HHAP practitioners.

METHODS

We conducted semi-structured interviews with national/regional HHAP practitioners. Interviews were recorded, transcribed and analysed using thematic content analysis. To maximize credibility a validation process was implemented through researcher triangulation; a sample of 30 segments was recorded by independent researchers.

RESULTS

We conducted six interviews with nine professionals (mean time 52 min) from five regions. We identified four categories: report's content and presentation, report's reception and communication, ÍCARO and risk assessment and other issues. Practitioners use ÍCARO and perceived it as relevant; they raised issues on its interpretation and felt these were not fully addressed, given researchers' use of statistical/epidemiological terms. We identified the need for improved communication and report's clarity.

CONCLUSIONS

Our study stresses the need for collaboration between experts within HHWS/HHAP. Despite ÍCARO's understanding being challenging, practitioners consider it a relevant tool. Researchers should use less statistical language and clarify ÍCARO's interpretation. Practitioners' needs should be considered when developing/revising tools.

Procédure Maastricht 3 : restons attentifs à ses enjeux éthiques !

Peu d’analyses des premiers résultats ont été publiées sur la procédure de don d’organes dite Maastricht 3 (M3), mise en place en 2014 en France. Pourtant, cette procédure est soumise à un conflit d’intérêt intérieur pour le médecin qui devra éclaircir son désir d’être utile aux autres par le biais de la promotion du don d’organes sans que cela n’influence sa décision d’arrêt des traitements de l’éventuel patient donneur. Ceci, alors même que les moyens d’établir un pronostic sont souvent limités. Toute modification des pratiques liées à la fin de vie au cours de l’instauration de la procédure M3 – telles la politique d’admission des patients en réanimation, l’administration de la sédation ou encore la procédure de séparation du ventilateur – peut témoigner d’une volonté de maximisation de l’utilité à court terme de cette procédure. Le consentement des proches peut lui aussi se retrouver biaisé par une forte désirabilité sociale ou par un sentiment de culpabilité, et une évaluation sereine ne sera pas réalisée du fait de la rapidité de la procédure. L’éclairage des tensions philosophiques entre les pensées conséquentialistes et déontologiques, l’importance d’un débat dans chaque structure, une indication très restrictive aux patients anoxiques les plus graves, un contrôle a posteriori indépendant, font partie des solutions proposées dans cet article pour réduire ces problèmes. Alors que la « pénurie » actuelle liée au don d’organes pourrait être résolue par un meilleur taux d’acceptabilité de prélèvements de patients en état de mort encéphalique, se pose finalement la question d’un dépassement irrémédiable des limites éthiques qui garantissent le sens premier de l’engagement des professionnels auprès de leurs patients.

Evolution of the use of antioxidants in anti-ageing cosmetics

OBJECTIVE

Skin health and beauty are a cornerstone of general well-being in humans. Anti-ageing cosmetics are used to provide a healthy and youthful appearance. Among the different cosmetic actives, antioxidants are incorporated in anti-ageing products due to their beneficial effects in preventing and minimizing the signs of skin ageing. This work aims to understand how anti-ageing formulations changed in the past 7 years regarding pure antioxidants composition.

METHODS

Data were collected from anti-ageing formulations commercialized in main stores and pharmacies in the Portuguese market. The study started on 2011 and was updated with products launched or whose composition has been renewed on 2013, 2015 or 2018.

RESULTS

Ascorbic acid and tocopherol and their derivatives were consistently the most used antioxidants in anti-ageing formulations; followed by niacinamide and retinyl palmitate. Seven ascorbic acid derivatives are currently used in anti-ageing formulations while only three tocopherol derivatives were identified in this study. Several combinations of antioxidants were routinely found, mainly tocopherol (or tocopherol derivatives) with other antioxidants and tocopherol with tocopherol derivatives. We have not identified emerging antioxidants with great impact in anti-ageing formulations even though niacinamide and retinyl palmitate exhibited over 10% more usage in 2018.

CONCLUSION

This insight is relevant to the cosmetic industry providing a better understanding of the scientific-based formulation of modern cosmetics and supports the need for innovative antioxidants in anti-ageing cosmetics.

Hepatocellular carcinoma tumour burden score to stratify prognosis after resection

BACKGROUND

Although the Barcelona Clinic Liver Cancer (BCLC) staging system has been largely adopted in clinical practice, recent studies have emphasized the need for further refinement and subclassification of this system.

METHODS

Patients who underwent hepatectomy with curative intent for BCLC-0, -A or -B hepatocellular carcinoma (HCC) between 2000 and 2017 were identified using a multi-institutional database. The tumour burden score (TBS) was calculated, and overall survival (OS) was examined in relation to TBS and BCLC stage.

RESULTS

Among 1053 patients, 63 (6·0 per cent) had BCLC-0, 826 (78·4 per cent) BCLC-A and 164 (15·6 per cent) had BCLC-B HCC. OS worsened incrementally with higher TBS (5-year OS 77·9, 61 and 39 per cent for low, medium and high TBS respectively; P < 0·001). No differences in OS were noted among patients with similar TBS, irrespective of BCLC stage (61·6 versus 58·9 per cent for BCLC-A/medium TBS versus BCLC-B/medium TBS, P = 0·930; 45 versus 13 per cent for BCLC-A/high TBS versus BCLC-B/high TBS, P = 0·175). Patients with BCLC-B HCC and a medium TBS had better OS than those with BCLC-A disease and a high TBS (58·9 versus 45 per cent; P = 0·005). On multivariable analysis, TBS remained associated with OS among patients with BCLC-A (medium TBS: hazard ratio (HR) 2·07, 95 per cent c.i. 1·42 to 3·02, P < 0·001; high TBS: HR 4·05, 2·40 to 6·82, P < 0·001) and BCLC-B (high TBS: HR 3·85, 2·03 to 7·30; P < 0·001) HCC. TBS could also stratify prognosis among patients in an external validation cohort (5-year OS 79, 51·2 and 28 per cent for low, medium and high TBS respectively; P = 0·010).

CONCLUSION

The prognosis of patients with HCC varied according to the BCLC stage but was largely dependent on the TBS.

The natural history of canine occult Grade II medial patellar luxation: an observational study

OBJECTIVES

To determine the risk of lameness and the rate of subsequent medial patellar luxation surgery in dogs that present with occult Grade II medial patellar luxation.

MATERIALS AND METHODS

Retrospective owner survey and review of clinical records of adult dogs diagnosed with Grade II medial patellar luxation that were initially asymptomatic and managed non-surgically that had a minimum of 4-year follow-up. Clinical notes and owner questionnaires identified dogs that subsequently developed lameness and required surgery on the previously asymptomatic stifle.

RESULTS

Thirty-eight dogs were included with an average follow-up of 51 months. Seventeen dogs re-presented for unscheduled contralateral medial patellar luxation surgery at an average of 15 months after initial presentation. A further two dogs had chronic contralateral limb lameness after an average of 33 months after initial surgery and may have been potential surgical candidates.

CLINICAL SIGNIFICANCE

Fifty percent of adult dogs presenting with occult Grade II medial patellar luxation subsequently developed chronic lameness or required surgery.

Adult-onset systemic autoinflammatory disorders: a clinical approach

Autoinflammatory disorders (AIDs) are a subgroup of immune-mediated syndromes that result from a primary dysfunction of the innate immune system. AIDs can be either monogenic or polygenic diseases. Unlike organspecific AIDs, systemic AIDs are characterized by fever and/or elevation of acute-phase reactants. This review aims to describe the most common adult-onset systemic AIDs, focusing mostly on polygenic and mixed-pattern diseases which are expected to be more prevalent in adult patients than monogenic AIDs overall. The literature was searched in Medline database. Organ-specific or childhood-onset systemic AIDs were excluded. AIDs were divided in three distinct groups: mixed-pattern, polygenic and adult-onset monogenic AIDs. Most adult-onset AIDs are polygenic but late-onset disease is not rare among monogenic AIDs such as familial Mediterranean fever (FMF). The diagnosis of systemic AIDs in adults is often delayed due to several factors and sometimes it is only established when amyloidosis or other complications are present. Therefore, it probably makes sense to primarily exclude common AIDs in adult patients with fever of unknown origin (and probably different presentations such as polyserositis) since a high prevalence of adult-onset Still's disease or FMF is usually expected. Colchicine, nonsteroidal anti-inflammatory drugs, steroids, immunosuppressive agents, interleukin-1 inhibitors and tumor necrosis factor antagonists constitute common therapeutic options for systemic AIDs.