| 11. |
- Fernell, Elisabeth, 1948, et al.
(author)
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Paediatric Acute onset Neuropsychiatric Syndrome: Exploratory study finds no evidence of HLA class II association but high rate of autoimmunity in first-degree relatives
- 2022
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In: Acta Paediatrica. - : Wiley. - 0803-5253 .- 1651-2227. ; 11:4, s. 820-824
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Journal article (peer-reviewed)abstract
- Aim Paediatric acute-onset neuropsychiatric syndrome (PANS) is defined by an acute onset of obsessive-compulsive disorder and/or eating restrictions and at least two other severe neuropsychiatric symptoms. The condition is suspected to have an immune-mediated pathophysiology, but reliable biomarkers have not been identified. Methods We hypothesised that PANS, like narcolepsy, might have a human leucocyte antigen (HLA) association, as found in 95% of children developing narcolepsy after H1N1 immunisation. Low resolution genotyping of the MHC class II antigens HLA-DRB1 and HLA-DQB1 was performed using two different PCR-based methods. In addition, parents were interviewed regarding a detailed family history of autoimmune diseases in first-degree relatives. A total of 18 children, aged 5-14 (mean 8.2) years at onset of PANS met symptom criteria. Results No evident association between PANS and the specific HLA alleles examined was observed. In first-degree relatives of 10 of the 18 children, an autoimmune disease had been diagnosed, and three of the 18 children themselves had an autoimmune disease. Conclusion No HLA allele association such as seen in children with narcolepsy after H1N1 immunisation could be confirmed in this group of children with PANS. However, more than half the group had a first-degree relative with a diagnosed autoimmune disease.
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| 12. |
- Hendry, Alexandra, et al.
(author)
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Atypical Development of Attentional Control Associates with Later Adaptive Functioning, Autism and ADHD Traits
- 2020
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In: Journal of autism and developmental disorders. - : Springer Nature. - 0162-3257 .- 1573-3432. ; 50:11, s. 4085-4105
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Journal article (peer-reviewed)abstract
- Autism is frequently associated with difficulties with top-down attentional control, which impact on individuals’ mental health and quality of life. The developmental processes involved in these attentional difficulties are not well understood. Using a data-driven approach, 2 samples (N = 294 and 412) of infants at elevated and typical likelihood of autism were grouped according to profiles of parent report of attention at 10, 15 and 25 months. In contrast to the normative profile of increases in attentional control scores between infancy and toddlerhood, a minority (7–9%) showed plateauing attentional control scores between 10 and 25 months. Consistent with pre-registered hypotheses, plateaued growth of attentional control was associated with elevated autism and ADHD traits, and lower adaptive functioning at age 3 years.
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| 13. |
- Hülsmann, Lisa, et al.
(author)
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Latitudinal patterns in stabilizing density dependence of forest communities
- 2024
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In: Nature. - 0028-0836 .- 1476-4687. ; 627, s. 564-571
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Journal article (peer-reviewed)abstract
- Numerous studies have shown reduced performance in plants that are surrounded by neighbours of the same species1,2, a phenomenon known as conspecific negative density dependence (CNDD)3. A long-held ecological hypothesis posits that CNDD is more pronounced in tropical than in temperate forests4,5, which increases community stabilization, species coexistence and the diversity of local tree species6,7. Previous analyses supporting such a latitudinal gradient in CNDD8,9 have suffered from methodological limitations related to the use of static data10–12. Here we present a comprehensive assessment of latitudinal CNDD patterns using dynamic mortality data to estimate species-site-specific CNDD across 23 sites. Averaged across species, we found that stabilizing CNDD was present at all except one site, but that average stabilizingCNDD was not stronger toward the tropics. However, in tropical tree communities, rare and intermediate abundant species experienced stronger stabilizing CNDD than did common species. This pattern was absent in temperate forests, which suggests that CNDD influences species abundances more strongly in tropical forests than it does in temperate ones13. We also found that interspecific variation in CNDD, which might attenuate its stabilizing effect on species diversity14,15, was high but not significantly different across latitudes. Although the consequences of these patterns for latitudinal diversity gradients are difficult to evaluate, we speculate that a more effective regulation of population abundances could translate into greater stabilization of tropical tree communities and thus contribute to the high local diversity of tropical forests.
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| 14. |
- Ilic, Aleksandra, et al.
(author)
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Photoredox catalysis via consecutive 2LMCT- and 3MLCT-excitation of an Fe(iii/ii)–N-heterocyclic carbene complex
- 2022
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In: Chemical Science. - : Royal Society of Chemistry. - 2041-6520 .- 2041-6539. ; 13:32, s. 9165-9175
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Journal article (peer-reviewed)abstract
- Fe-N-heterocyclic carbene (NHC) complexes attract increasing attention as photosensitisers and photoredox catalysts. Such applications generally rely on sufficiently long excited state lifetimes and efficient bimolecular quenching, which leads to there being few examples of successful usage of Fe-NHC complexes to date. Here, we have employed [Fe(iii)(btz)(3)](3+) (btz = (3,3 '-dimethyl-1,1 '-bis(p-tolyl)-4,4 '-bis(1,2,3-triazol-5-ylidene))) in the addition of alkyl halides to alkenes and alkynes via visible light-mediated atom transfer radical addition (ATRA). Unlike other Fe-NHC complexes, [Fe(iii/ii)(btz)(3)](3+/2+) benefits from sizable charge transfer excited state lifetimes >= 0.1 ns in both oxidation states, and the Fe(iii) (LMCT)-L-2 and Fe(ii) (MLCT)-M-3 states are strong oxidants and reductants, respectively. The combined reactivity of both excited states enables efficient one-electron reduction of the alkyl halide substrate under green light irradiation. The two-photon mechanism proceeds via reductive quenching of the Fe(iii) (LMCT)-L-2 state by a sacrificial electron donor and subsequent excitation of the Fe(ii) product to its highly reducing (MLCT)-M-3 state. This route is shown to be more efficient than the alternative, where oxidative quenching of the less reducing Fe(iii) (LMCT)-L-2 state by the alkyl halide drives the reaction, in the absence of a sacrificial electron donor.
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| 15. |
- Johnson, Candice, et al.
(author)
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Skin sensitization in silico protocol
- 2020
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In: Regulatory toxicology and pharmacology. - : Elsevier BV. - 0273-2300 .- 1096-0295. ; 116
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Journal article (peer-reviewed)abstract
- The assessment of skin sensitization has evolved over the past few years to include in vitro assessments of key events along the adverse outcome pathway and opportunistically capitalize on the strengths of in silico methods to support a weight of evidence assessment without conducing a test in animals. While in silico methods vary greatly in their purpose and format; there is a need to standardize the underlying principles on which such models are developed and to make transparent the implications for the uncertainty in the overall assessment. In this contribution, the relationship between skin sensitization relevant effects, mechanisms, and endpoints are built into a hazard assessment framework. Based on the relevance of the mechanisms and effects as well as the strengths and limitations of the experimental systems used to identify them, rules and principles are defined for deriving skin sensitization in silico assessments. Further, the assignments of reliability and confidence scores that reflect the overall strength of the assessment are discussed. This skin sensitization protocol supports the implementation and acceptance of in silico approaches for the prediction of skin sensitization.
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| 16. |
- Johnson, Kirk R., et al.
(author)
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A global approach for natural history museum collections
- 2023
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In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 379:6638, s. 1192-1194
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Journal article (peer-reviewed)abstract
- Integration of the world’s natural history collections can provide a resource for decision-makers
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| 17. |
- Johnson, Mats, 1956, et al.
(author)
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No neurochemical evidence of neuronal injury or glial activation in children with Pediatric Acute-onset Neuropsychiatric Syndrome: An explorative pilot study.
- 2021
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In: The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry. - : Informa UK Limited. - 1814-1412. ; 22:10, s. 800-804
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Journal article (peer-reviewed)abstract
- Summary Objective: Pediatric Acute-onset Neuropsychiatric Syndrome (PANS) is characterized by an acute onset of obsessive compulsive disorder, combined with at least two other neuropsychiatric symptoms with acute onset. Diagnostic criteria also require that no specific medical etiology is identified. Although there are no verified etiological biomarkers, PANS is assumed to be a neuroinflammatory disorder with a possible autoimmune etiology. Neurochemical markers such as neurofilament light (NfL, a neuronal injury marker) and glial fibrillary acidic protein (GFAP, an astrocytic activation marker) have not been published for this patient group. Method: Blood samples from 17 children meeting diagnostic criteria for PANS, after assessment at a child neuropsychiatry clinic were analysed for serum concentrations of NfL and GFAP. Ten age-matched children without any neurological or psychiatric disorder served as a comparison group. Results: No difference was found in mean NfL and mean GFAP serum concentrations between children with PANS and controls. Conclusion: Neuronal injury and astrocyte activation do not seem to be a major event in PANS. The study group was small, and even if findings may be reassuring for parents and patients, they should be interpreted with caution and verified in larger cohort and possibly with other markers in both serum and CSF.
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| 18. |
- Kapetanovic, Sabina, 1980-, et al.
(author)
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Validation of the Super-Brief Pathological Narcissism Inventory (SB-PNI) among Swedish adolescents
- 2024
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In: Current Psychology. - : Springer Nature. - 1046-1310 .- 1936-4733.
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Journal article (peer-reviewed)abstract
- This study examines the psychometric structure and properties of the Swedish version of the Super-Brief Pathological Narcissism Inventory (SB-PNI) among adolescents. In order to ensure the validity and feasibility of the measure, we examined the factor structure, measurement invariance across gender, age and ethnicity, and construct validity in relation to a number of correlates of narcissism in adolescence. Data were drawn from a large cross-sectional survey conducted in 35 schools in southern Sweden. The sample consisted of N = 5313 adolescents (Mage = 16.10 SD = 1.55) with 52.2% girls, 45.9% boys and 1.8% adolescents with unspecified gender, from compulsory and upper secondary schools in southern Sweden. The results showed that the measure holds a two-factor structure, suggesting the use of the subscales grandiosity and vulnerability separately, rather than as a unidimensional measure. The correlated factors grandiosity and vulnerability yielded full configural and metric invariance across gender, age, and ethnicity. Both grandiosity and vulnerability were correlated with externalizing and internalizing symptoms, as well as with low self-esteem. The study provides evidence for the utility of the SB-PNI among Swedish adolescents and indicates that the measure can be used across male and female adolescents of different ages and ethnic groups.
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| 19. |
- Kapetanovic, Sabina, 1980-, et al.
(author)
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Validation of the Super-Brief Pathological Narcissism Inventory (SB-PNI) among Swedish adolescents
- 2024
-
In: Current Psychology. - : Springer Nature. - 1046-1310 .- 1936-4733. ; 43, s. 19457-19467
-
Journal article (peer-reviewed)abstract
- This study examines the psychometric structure and properties of the Swedish version of the Super-Brief Pathological Narcissism Inventory (SB-PNI) among adolescents. In order to ensure the validity and feasibility of the measure, we examined the factor structure, measurement invariance across gender, age and ethnicity, and construct validity in relation to a number of correlates of narcissism in adolescence. Data were drawn from a large cross-sectional survey conducted in 35 schools in southern Sweden. The sample consisted of N = 5313 adolescents (Mage = 16.10 SD = 1.55) with 52.2% girls, 45.9% boys and 1.8% adolescents with unspecified gender, from compulsory and upper secondary schools in southern Sweden. The results showed that the measure holds a two-factor structure, suggesting the use of the subscales grandiosity and vulnerability separately, rather than as a unidimensional measure. The correlated factors grandiosity and vulnerability yielded full configural and metric invariance across gender, age, and ethnicity. Both grandiosity and vulnerability were correlated with externalizing and internalizing symptoms, as well as with low self-esteem. The study provides evidence for the utility of the SB-PNI among Swedish adolescents and indicates that the measure can be used across male and female adolescents of different ages and ethnic groups.
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| 20. |
- Krifors, Anders, et al.
(author)
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Influenza-associated invasive aspergillosis in patients admitted to the intensive care unit in Sweden : a prospective multicentre cohort study
- 2024
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In: Infectious Diseases. - : Taylor & Francis. - 2374-4235 .- 2374-4243. ; 56:2, s. 110-115
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Journal article (peer-reviewed)abstract
- BACKGROUND: The purpose of this study was to prospectively investigate the incidence of influenza-associated pulmonary aspergillosis (IAPA) in influenza patients admitted to intensive care units in Sweden.METHODS: The study included consecutive adult patients with PCR-verified influenza A or B in 12 Swedish intensive care units (ICUs) over four influenza seasons (2019-2023). Patients were screened using serum galactomannan and β-d-glucan tests and fungal culture of a respiratory sample at inclusion and weekly during the ICU stay. Bronchoalveolar lavage was performed if clinically feasible. IAPA was classified according to recently proposed case definitions.RESULTS: The cohort included 55 patients; 42% were female, and the median age was 59 (IQR 48-71) years. All patients had at least one galactomannan test, β-d-glucan test and respiratory culture performed. Bronchoalveolar lavage was performed in 24 (44%) of the patients. Five (9%, 95% CI 3.8% - 20.4%) patients were classified as probable IAPA, of which four lacked classical risk factors. The overall ICU mortality was significantly higher among IAPA patients than non-IAPA patients (60% vs 8%, p = 0.01).CONCLUSIONS: The study represents the first prospective investigation of IAPA incidence. The 9% incidence of IAPA confirms the increased risk of invasive pulmonary aspergillosis among influenza patients admitted to the ICU. Therefore, it appears reasonable to implement a screening protocol for the early diagnosis and treatment of IAPA in influenza patients receiving intensive care.TRIAL REGISTRATION: ClinicalTrials.gov NCT04172610, registered November 21, 2019.
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