scholarly journals SARS-CoV-2 seroprevalence and characteristics of post-infection immunity in a general population cohort study in Catalonia, Spain.

2021 ◽  
Author(s):  
Marianna Karachaliou ◽  
Gemma Moncunill ◽  
Ana Espinosa ◽  
Gemma Vinyals ◽  
Alfons Jiménez ◽  
...  
Keyword(s):  
General Population ◽  
Post Infection ◽  
Population Level ◽  
Natural Immunity ◽  
General Population Study ◽  
General Population Cohort ◽  
Serology Test ◽  
Multiplex Serology ◽  
New Evidence ◽  
Immune Profiling

Abstract Sparse data exist on the complex natural immunity to SARS-CoV-2 at the population level. We applied a well-validated multiplex serology test in 5000 participants of a general population study in Catalonia in blood samples collected from end June to mid November 2020. We detected a seroprevalence of 18.1% in adults (n=4740), and modeled extrapolation to the general population of Catalonia indicated a 15.3% seroprevalence. Antibodies persisted up to 9 months after infection. Immune profiling of infected individuals revealed that with increasing severity of infection (asymptomatic, 1-3 symptoms, ≥4 symptoms, admitted to hospital/ICU), seroresponses were more robust with a shift towards IgG over IgA and anti-spike over anti-nucleocapsid responses. Seropositive smokers showed lower seroresponses than non-smokers. In adolescents (n=260) seroprevalence was 11.5% and IgG anti-spike responses were dominant. Our study provides an unbiased estimate of SARS-CoV-2 seroprevalence in Catalonia and new evidence on the durability and heterogeneity of post-infection immunity.

scholarly journals SARS-CoV-2 seroprevalence and characteristics of post-infection immunity in a general population cohort study in Catalonia, Spain.

2021 ◽  
Author(s):  
Marianna Karachaliou ◽  
Gemma Moncunill ◽  
Ana Espinosa ◽  
Gemma Castaño-Vinyals ◽  
Alfons Jiménez ◽  
...  
Keyword(s):  
General Population ◽  
Post Infection ◽  
Population Level ◽  
Normal Weight ◽  
Natural Immunity ◽  
General Population Study ◽  
General Population Cohort ◽  
Serology Test ◽  
Multiplex Serology ◽  
Antibody Levels

Abstract Sparse data exist on the complex natural immunity to SARS-CoV-2 at the population level. We applied a well-validated multiplex serology test in 5000 participants of a general population study in Catalonia in blood samples collected from end June to mid November 2020. Based on responses to fifteen isotype-antigen combinations, we detected a seroprevalence of 18.1% in adults (n=4740), and modeled extrapolation to the general population of Catalonia indicated a 15.3% seroprevalence. Antibodies persistedup to 9 months after infection. Immune profiling of infected individuals revealed that with increasing severity of infection (asymptomatic, 1-3 symptoms, ≥4 symptoms, admitted to hospital/ICU), seroresponses were more robust and rich with a shift towardsIgG over IgA and anti-spike over anti-nucleocapsid responses. Among seropositive participants, lower antibody levels were observed for those ≥60 years vs <60 years old and smokers vs non-smokers. Overweight/obese participants vs normal weight had higher antibody levels. Adolescents (13-15 years old) (n=260) showed aseroprevalence of 11.5%, were less likely to be tested seropositive compared to their parentsand had dominant anti-spike rather than anti-nucleocapside IgG responses. Our study provides an unbiased estimate of SARS-CoV-2 seroprevalence in Catalonia and new evidence on the durability and heterogeneity of post-infection immunity.

scholarly journals Childhood neurodevelopmental markers and risk of premature mortality: Follow-up to age 60–65 years in the Aberdeen Children of the 1950s study

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0255649
Author(s):  
Adele Warrilow ◽  
Geoff Der ◽  
Sally-Ann Cooper ◽  
Helen Minnis ◽  
Jill P. Pell
Keyword(s):  
General Population ◽  
Public Mental Health ◽  
Premature Mortality ◽  
Population Level ◽  
Population Cohort ◽  
Hazard Ratios ◽  
Wide Range ◽  
General Population Cohort ◽  
Cox Proportional Hazard Models

Background Individual neurodevelopmental disorders are associated with premature mortality. Little is known about the association between multiple neurodevelopmental markers and premature mortality at a population level. The ESSENCE (Early Symptomatic Syndromes Eliciting Neurodevelopmental Clinical Examinations) approach considers multiple neurodevelopmental parameters, assessing several markers in parallel that cluster, rather than considering individual diagnostic categories in isolation. Objectives To determine whether childhood neurodevelopmental markers, including reduced intellectual functioning, are associated with all-cause premature mortality. Methods and procedures In a general population cohort study (n = 12,150) with longitudinal follow up from childhood to middle age, Cox proportional hazard models were used to study the associations between childhood neurodevelopmental markers (Rutter B scale and IQ) and premature all-cause mortality. Outcomes and results The cognitive measures and 21 of the 26 Rutter B items were significantly associated with premature mortality in bivariate analyses with hazard ratios from 1.24 (95% CI 1.05–1.47) to 2.25 (95% CI 1.78–2.90). In the final adjusted model, neurodevelopmental markers suggestive of several domains including hyperactivity, conduct problems and intellectual impairment were positively associated with premature mortality and improved prediction of premature mortality. Conclusions A wide range of neurodevelopmental markers, including childhood IQ, were found to predict premature mortality in a large general population cohort with longitudinal follow up to 60–65 years of age. Implications These findings highlight the importance of a holistic assessment of children with neurodevelopmental markers that addresses a range of neurodevelopmental conditions. Our findings could open the door to a shift in child public mental health focus, where multiple and/or cumulative markers of neurodevelopmental conditions alert clinicians to the need for early intervention. This could lead to a reduction in the risk of broad health outcomes at a population level.

scholarly journals Increased Baseline C-Reactive Protein Concentrations Are Associated with Increased Risk of Infections: Results from 2 Large Danish Population Cohorts

2016 ◽  
Vol 62 (2) ◽  
pp. 335-342 ◽  
Author(s):  
Jeppe Zacho ◽  
Thomas Benfield ◽  
Anne Tybjærg-Hansen ◽  
Børge G Nordestgaard
Keyword(s):  
Infectious Disease ◽  
General Population ◽  
Population Study ◽  
C Reactive Protein ◽  
Cross Sectional ◽  
General Population Study ◽  
Gram Negative ◽  
Reactive Protein ◽  
Increased Risk ◽  
General Population Cohort

AbstractBACKGROUNDThe acute-phase reactant C-reactive protein (CRP) increases rapidly during an infection. We tested the hypothesis that chronic low-level increases in CRP are associated with an increased risk of infectious disease.METHODSWe studied 9660 individuals from a prospective general population cohort, including 3592 in whom infectious disease developed, and another 60 896 individuals from a cross-sectional general population study, of whom 13 332 developed infectious disease; 55% were women, and the mean age was 57 years. Hospital diagnoses of infections in 1977–2010 were based on International Classification of Diseases–coded discharge records from the national Danish Patient Registry. We measured CRP concentrations and conducted genotyping for 4 CRP polymorphisms that increase CRP. Individuals with CRP &gt;10 mg/L were excluded because of possible ongoing infection at the time of testing.RESULTSIndividuals with CRP &gt;3 mg/L had 1.2 and 1.7 times increased risk of infectious disease, in the prospective general population cohort and the cross-sectional general population study, respectively, compared with individuals with CRP &lt;1 mg/L. In the combined populations, individuals in the highest CRP tertile (compared with the lowest) had an increased risk of bacterial diseases (hazard ratio 1.7, 95% CI 1.6–1.8), but not viral, mycosis, and parasitic diseases. The increased risk was mainly carried by pneumonia, sepsis, and particularly gram-negative infections. None of the genotype combinations examined conferred an increased risk of infectious disease.CONCLUSIONSChronic low-level CRP increases were associated with increased risk of bacterial infections, gram-negative infections in particular. Genotypes associated with increases in CRP were not associated with increased risk of infection.

scholarly journals Elevated levels of oxidized nucleosides in individuals with the JAK2V617F mutation from a general population study

Redox Biology ◽  
2021 ◽  
Vol 41 ◽  
pp. 101895
Author(s):  
Anders L. Sørensen ◽  
Hans C. Hasselbalch ◽  
Mads Emil Bjørn ◽  
Claus H. Nielsen ◽  
Sabrina Cordua ◽  
...  
Keyword(s):  
General Population ◽  
Population Study ◽  
Jak2v617f Mutation ◽  
General Population Study

scholarly journals Endocannabinoid system mediates the association between gut-microbial diversity and anhedonia/amotivation in a general population cohort

2021 ◽  
Author(s):  
Amedeo Minichino ◽  
Matthew A. Jackson ◽  
Marta Francesconi ◽  
Claire J. Steves ◽  
Cristina Menni ◽  
...  
Keyword(s):  
General Population ◽  
Microbial Diversity ◽  
Gut Microbiome ◽  
Endocannabinoid System ◽  
Alpha Diversity ◽  
Serum Levels ◽  
Population Cohort ◽  
Random Intercept ◽  
General Population Cohort ◽  
Antidepressant Use

AbstractAnhedonia and amotivation are debilitating symptoms and represent unmet therapeutic needs in a range of clinical conditions. The gut-microbiome-endocannabinoid axis might represent a potential modifiable target for interventions. Based on results obtained from animal models, we tested the hypothesis that the endocannabinoid system mediates the association between gut-microbiome diversity and anhedonia/amotivation in a general population cohort. We used longitudinal data collected from 786 volunteer twins recruited as part the TwinsUK register. Our hypothesis was tested with a multilevel mediation model using family structure as random intercept. The model was set using alpha diversity (within-individual gut-microbial diversity) as predictor, serum and faecal levels of the endocannabinoid palmitoylethanolamide (PEA) as mediator, and anhedonia/amotivation as outcome. PEA is considered the endogenous equivalent of cannabidiol, with increased serum levels believed to have anti-depressive effects, while increased stool PEA levels, reflecting increased excretion, are believed to have opposite, detrimental, effects on mental health. We therefore expected that either reduced serum PEA or increased stool PEA would mediate the association between microbial diversity and anhedonia amotivation. Analyses were adjusted for obesity, diet, antidepressant use, sociodemographic and technical covariates. Data were imputed using multiple imputation by chained equations. Mean age was 65.2 ± 7.6; 93% of the sample were females. We found a direct, significant, association between alpha diversity and anhedonia/amotivation (β = −0.37; 95%CI: −0.71 to −0.03; P = 0.03). Faecal, but not serum, levels of the endocannabinoid palmitoylethanolamide (PEA) mediated this association: the indirect effect was significant (β = −0.13; 95%CI: −0.24 to −0.01; P = 0.03), as was the total effect (β = −0.38; 95%CI: −0.72 to −0.04; P = 0.03), whereas the direct effect of alpha diversity on anhedonia/amotivation was attenuated fully (β = −0.25; 95%CI: −0.60 to 0.09; P = 0.16). Our results suggest that gut-microbial diversity might contribute to anhedonia/amotivation via the endocannabinoid system. These findings shed light on the biological underpinnings of anhedonia/amotivation and suggest the gut microbiota-endocannabinoid axis as a promising therapeutic target in an area of unmet clinical need.

Childhood negative experiences and subclinical psychosis in adolescence: a longitudinal general population study

2007 ◽  
Vol 1 (2) ◽  
pp. 201-207 ◽  
Author(s):  
Ellen De Loore ◽  
Marjan Drukker ◽  
Nicole Gunther ◽  
Frans Feron ◽  
Dirk Deboutte ◽  
...  
Keyword(s):  
General Population ◽  
Population Study ◽  
General Population Study ◽  
Negative Experiences ◽  
Subclinical Psychosis

ApoE and vascular disease – resequencing and genotyping in a general population cohort

2021 ◽  
Vol 331 ◽  
pp. e53-e54
Author(s):  
K.L. Rasmussen ◽  
A. Tybjærg-Hansen ◽  
B.G. Nordestgaard ◽  
R. Frikke-Schmidt
Keyword(s):  
General Population ◽  
Vascular Disease ◽  
Population Cohort ◽  
General Population Cohort

scholarly journals Association of Blood Eosinophil and Blood Neutrophil Counts with Asthma Exacerbations in the Copenhagen General Population Study

2017 ◽  
Vol 63 (4) ◽  
pp. 823-832 ◽  
Author(s):  
Signe Vedel-Krogh ◽  
Sune Fallgaard Nielsen ◽  
Peter Lange ◽  
Jørgen Vestbo ◽  
Børge Grønne Nordestgaard
Keyword(s):  
General Population ◽  
Disease Severity ◽  
Population Study ◽  
Blood Eosinophil ◽  
Blood Neutrophil ◽  
General Population Study ◽  
Asthma Exacerbations ◽  
Increased Risk ◽  
Blood Neutrophils ◽  
Eosinophil Counts

Abstract BACKGROUND Blood eosinophil count is a marker of eosinophilic airway inflammation and disease severity in asthma. However, blood neutrophil count might also be associated with disease severity. We tested the hypothesis that high blood eosinophil and neutrophil counts are both associated with the risk of asthma exacerbations among individuals with asthma from the general population. METHODS From the Copenhagen General Population Study with 81351 participants, we included 4838 with self-reported asthma. We recorded baseline blood eosinophil and neutrophil counts, and asthma exacerbations during follow-up in 2003–2011, defined as moderate (short-course treatment of prednisolone) or severe (hospitalization). RESULTS The multivariable-adjusted incidence rate ratios (IRRs) were 1.28 (95% CI, 1.06–1.55) for moderate exacerbations and 1.55 (1.20–2.00) for severe exacerbations for individuals with blood eosinophil counts &gt;0.29 × 109/L (highest tertile) vs individuals with blood eosinophil counts &lt;0.18 × 109/L (lowest tertile). For blood neutrophils, the multivariable-adjusted IRRs were 2.14 (1.74–2.63) for moderate exacerbations and 1.18 (0.89–1.55) for severe exacerbations for individuals with blood neutrophil counts &gt;4.85 × 109/L (highest tertile) vs individuals with blood neutrophil counts &lt;3.77 × 109/L (lowest tertile). Blood eosinophil and neutrophil counts interacted on moderate exacerbations (P = 3 × 10−4), but not on severe exacerbations. CONCLUSIONS High blood eosinophil counts are associated with an increased risk of both moderate and severe asthma exacerbations, while high blood neutrophil counts are associated with an increased risk of moderate, but not severe exacerbations.

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