Per Näsman

Dr. Per Näsman

orcid

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 September 2018 in Diabetes & Vascular Disease Research
Verified
Journal Article
Closed access
IJIsabelle Johansson
Isabelle Johansson
UDUlf Dahlström
Ulf Dahlström
MEMagnus Edner
Magnus Edner
PNPer Näsman
Per Näsman
LRLars Rydén
Lars Rydén
ANAnna Norhammar
Anna Norhammar
Objective: To study the characteristics and prognostic implications of type 2 diabetes in different heart failure entities from a nationwide perspective. Methods: This observational study comprised 30,696 heart failure patients prospectively included in the Swedish Heart Failure Registry (SwedeHF) 2003–2011 from specialist care, with mortality information available until December 2014. Patients were categorized into three heart failure entities by their left ventricular ejection fraction (heart failure with preserved ejection fraction: ⩾50%, heart failure with mid-range ejection fraction: 40%–49% and heart failure with reduced ejection fraction: <40%). All-cause mortality stratified by type 2 diabetes and heart failure entity was studied by Cox regression. Results: Among the patients, 22% had heart failure with preserved ejection fraction, 21% had heart failure with mid-range ejection fraction and 57% had heart failure with reduced ejection fraction. The proportion of type 2 diabetes was similar, ≈25% in each heart failure entity. Patients with type 2 diabetes and heart failure with preserved ejection fraction were older, more often female and burdened with hypertension and renal impairment compared with heart failure with mid-range ejection fraction and heart failure with reduced ejection fraction patients among whom ischaemic heart disease was more common. Type 2 diabetes remained an independent mortality predictor across all heart failure entities after multivariable adjustment, somewhat stronger in heart failure with left ventricular ejection fraction below 50% (hazard ratio, 95% confidence interval; heart failure with preserved ejection fraction: 1.32 [1.22–1.43], heart failure with mid-range ejection fraction: 1.51 [1.39–1.65], heart failure with reduced ejection fraction: 1.46 [1.39–1.54]; p-value for interaction, p = 0.0049). Conclusion: Type 2 diabetes is an independent mortality predictor across all heart failure entities increasing mortality risk by 30%–50%. In type 2 diabetes, the heart failure with mid-range ejection fraction entity resembles heart failure with reduced ejection fraction in clinical characteristics, risk factor pattern and prognosis.

5 September 2018 in IEEE Transactions on Electromagnetic Compatibility
Verified
Journal Article
Closed access
PAPer Angskog
Per Angskog
PNPer Näsman
Per Näsman
LMLars-Goran Mattsson
Lars-Goran Mattsson
The connected autonomous vehicle (CAV) will never be completely autonomous; on the contrary, it will be heavily dependent on so-called vehicular ad hoc networks (VANETs) for its function. To deserve the trust of the general public, the vehicles as well as the intelligent transport system (ITS) infrastructure must be able to handle not only natural disturbances but also attacks of malicious nature. In this paper, we discuss the effects of antagonistic attacks using intentional electromagnetic interference (IEMI) and how the antagonistic nature of the threat renders probabilistic risk analysis inadequate for the defense of the vehicles and the infrastructure. Instead, we propose a shift toward resilience engineering and vulnerability analysis to manage antagonistic threats. Finally, we also give two examples of possible scenarios to illustrate the type of situations a CAV must be able to handle.

1 October 2021 in Stroke
Verified
Journal Article
Open access
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ELErik Lundström
Erik Lundström
EIEva Isaksson
Eva Isaksson
NNNina Greilert Norin
Nina Greilert Norin
PNPer Näsman
Per Näsman
PWPer Wester
Per Wester
OCon the behalf of the EFFECTS Writing Committee
on the behalf of the EFFECTS Writing Committee
Background and Purpose: The EFFECTS (Efficacy of Fluoxetine—a Randomised Controlled Trial in Stroke) recently reported that 20 mg fluoxetine once daily for 6 months after acute stroke did not improve functional outcome but reduced depression and increased fractures and hyponatremia at 6 months. The purpose of this predefined secondary analysis was to identify if any effects of fluoxetine were maintained or delayed over 12 months. Methods: EFFECTS was an investigator-led, randomized, placebo-controlled, double-blind, parallel group trial in Sweden that enrolled adult patients with stroke. Patients were randomized to 20 mg oral fluoxetine or matching placebo for 6 months and followed for another 6 months. The primary outcome was functional outcome (modified Rankin Scale), at 6 months. Predefined secondary outcomes for these analyses included the modified Rankin Scale, health status, quality of life, fatigue, mood, and depression at 12 months. Results: One thousand five hundred patients were recruited from 35 centers in Sweden between 2014 and 2019; 750 were allocated fluoxetine and 750 placebo. At 12 months, modified Rankin Scale data were available in 715 (95%) patients allocated fluoxetine and 712 (95%) placebo. The distribution of modified Rankin Scale categories was similar in the 2 groups (adjusted common odds ratio, 0.92 [95% CI, 0.76–1.10]). Patients allocated fluoxetine scored worse on memory with a median value of 89 (interquartile range, 75–100) versus 93 (interquartile range, 82–100); P =0.0021 and communication 93 (interquartile range, 82–100) versus 96 (interquartile range, 86–100); P =0.024 domains of the Stroke Impact Scale compared with placebo. There were no other differences in secondary outcomes. Conclusions: Fluoxetine after acute stroke had no effect on functional outcome at 12 months. Patients allocated fluoxetine scored worse on memory and communication on the Stroke Impact Scale compared with placebo, but this is likely to be due to chance. Registration: URL: https://www.clinicaltrials.gov ; Unique identifier: NCT02683213.

23 March 2020 in Women & Criminal Justice
Verified
Journal Article
Open access
VCVania Ceccato
Vania Ceccato
PNPer Näsman
Per Näsman
LLLinda Langefors
Linda Langefors
Informed by principles of environmental criminology, this study assesses patterns of sexual victimization among young riders of rail-bound public transportation using a sample of 1,122 university students in Stockholm, Sweden. Exploratory data analysis and logistic regression models underlie the methodology of the study. Findings indicate that the physical and social characteristics of transit environments have an impact on the likelihood of sexual victimization after controlling for individual factors. The theoretical and practical implications of these results are discussed.

Verified
Journal Article
Open access
PDF file
DKDimitrios Kalafatis
Dimitrios Kalafatis
ALAnna Löfdahl
Anna Löfdahl
PNPer Näsman
Per Näsman
GDGöran Dellgren
Göran Dellgren
AWAsa M Wheelock
Asa M Wheelock
GWGunilla Westergren-Thorsson
Gunilla Westergren-Thorsson
Idiopathic pulmonary fibrosis (IPF) is a progressive fibrotic lung disease with an unmet need of biomarkers that can aid in the diagnostic and prognostic assessment of the disease and response to treatment. In this two-part explorative proteomic study, we demonstrate how proteins associated with tissue remodeling, inflammation and chemotaxis such as MMP7, CXCL13 and CCL19 are released in response to aberrant extracellular matrix (ECM) in IPF lung. We used a novel ex vivo model where decellularized lung tissue from IPF patients and healthy donors were repopulated with healthy fibroblasts to monitor locally released mediators. Results were validated in longitudinally collected serum samples from 38 IPF patients and from 77 healthy controls. We demonstrate how proteins elevated in the ex vivo model (e.g., MMP7), and other serum proteins found elevated in IPF patients such as HGF, VEGFA, MCP-3, IL-6 and TNFRSF12A, are associated with disease severity and progression and their response to antifibrotic treatment. Our study supports the model’s applicability in studying mechanisms involved in IPF and provides additional evidence for both established and potentially new biomarkers in IPF.

27 May 2025 in Annals of the American Association of Geographers
Verified
Journal Article
Open access
JAJonatan Abraham
Jonatan Abraham
YKYuhao Kang
Yuhao Kang
VCVania Ceccato
Vania Ceccato
PNPer Näsman
Per Näsman
Fábio DuarteFábio Duarte
Fábio Duarte
CRCarlo Ratti
Carlo Ratti