Occupational exposure to diesel engine exhaust and first-time acute myocardial infarction - a nationwide register-based cohort study 1976- 2018.

Aims: Exposure to air pollution including diesel engine exhaust (DEE) is associated with increased risk of acute myocardial infarction (AMI). Few studies have investigated the risk of AMI according to occupational exposure to DEE. The aim of this study was to evaluate the association between occupational exposure to DEE and the risk of first-time AMI.

Strengthening research preparedness for crises: lessons from Norwegian government agencies in using randomized trials and quasi-experimental methods to evaluate public policy interventions.

During public health crises such as pandemics, governments must rapidly adopt and implement wide-reaching policies and programs ("public policy interventions"). A key takeaway from the coronavirus disease 2019 (COVID-19) pandemic was that although numerous randomized controlled trials (RCTs) focussed on drugs and vaccines, few policy experiments were conducted to evaluate effects of public policy interventions across various sectors on viral transmission and other consequences. Moreover, many quasi-experimental studies were of spurious quality, thus proving unhelpful for informing public policy.

Occupation and 11-year lung function decline in the HUNT Study.

Background: The association between occupational titles and lung function has mostly been examined through cross-sectional studies. Preventive measures are expected to mitigate adverse effects; hence, updated estimates are necessary.

Aims: To study change in lung function measured by spirometry across occupations.

Application of X-ray diffraction with Rietveld refinement to quantify mineral composition including crystalline silica in respirable dust.

This study aimed to test the use of Rietveld refinement on respirable aerosol samples to determine the phase of respirable crystalline silica (RCS) and other minerals. The results from the Rietveld refinement were compared to an external standard method and gravimetrical measurements. Laboratory samples consisting of α-quartz, feldspar, and calcite with variable proportions and total mass loadings were made and analyzed using the NIOSH 7500 , followed by Rietveld refinement.

Effect of the Norwegian agreement on a more inclusive working life on use of sick leave and pregnancy benefits among pregnant women: a cohort study.

Background: We aimed to estimate the effect of the voluntary Norwegian Agreement on a More Inclusive Working Life (IA Agreement) on use of sickness absence (SA) and pregnancy benefits among pregnant women.

Methods: Pregnant women (n = 112,486) with a birth during 1.12.

Toward Standardization of a Lung New Approach Model for Toxicity Testing of Nanomaterials.

This study represents an attempt toward the standardization of pulmonary NAMs and the development of a novel approach for toxicity testing of nanomaterials. Laboratory comparisons are challenging yet essential for identifying existing limitations and proposing potential solutions. Lung cells cultivated and exposed at the air-liquid interface (ALI) more accurately represent the physiology of human lungs and pulmonary exposure scenarios than submerged cell and exposure models.

Assessing occupational styrene exposure in the European and US Glass Reinforced Plastics Industry for the period between 1947 and 2020.

Background: We aimed to develop a method for assessing occupational styrene exposures for application in epidemiological studies on risks of lymphohematopoietic neoplasms and other malignant and non-malignant diseases in the European and the US glass reinforced plastics industries.

Method: We estimated a linear mixed effects model based on individual airborne personal measurements of styrene from the glass reinforced plastics industry in Denmark, Norway, Sweden, UK, and the US. The most suitable model was chosen based on its predictive power as assessed using cross validation with different combinations of predictors; and by comparing their prediction errors.

Modifiable prognostic factors of high societal costs among people on sick leave due to musculoskeletal disorders: a replication study.

Background: Musculoskeletal disorders are an extensive burden to society, yet few studies have explored and replicated modifiable prognostic factors associated with high societal costs. This study aimed to replicate previously identified associations between nine modifiable prognostic factors and high societal costs among people on sick leave due to musculoskeletal disorders.

Methods: Pooled data from a three-arm randomised controlled trial with 6 months of follow-up were used, including 509 participants on sick leave due to musculoskeletal disorders in Norway.

Interlaboratory comparison of endotoxin contamination assessment of nanomaterials.

Endotoxin contamination is a significant hurdle to the translation of nanomaterials for biomedical applications. Multiple reports now describe that more than one-third of nanomaterials fail early pre-clinical assessment due to levels of endotoxin above regulatory requirements. Additionally, most immunological studies or studies testing nanomaterials in the literature lack inclusion of this assessment, which may lead to false-positive or false-negative results if high levels of the contaminant are present.

Airborne trichloramine in indoor swimming pools in Sweden.

Trichloramine is a disinfection by-product in chlorinated swimming pools. It can evaporate into the air and irritate eyes and airways among swimmers and pool workers. This study aimed to evaluate airborne concentrations of trichloramine in different types of indoor swimming pools.

Measurements of dust and respirable crystalline silica during indoor demolition and renovation.

Increased focus on renovating and maintaining the existing building stock is an integral part of the circular economy, however this might pose challenges to workers health. The aim of this study was to assess the renovation workers' exposure to inhalable dust, thoracic dust, respirable dust, and respirable crystalline silica (RCS). Personal aerosol samples were collected as full shift samples from 92 workers to a total of 407 samples.

Endogenous pain modulation after sleep restriction in migraine: a blinded crossover study.

Background: Patients with migraine are vulnerable to insufficient sleep, but the impact of sleep restriction is largely unknown. In addition, the importance of sleep may be different in patients with migraine who mostly have attack onsets during sleep, so called sleep-related migraine, compared to patients with non-sleep-related migraine. In this study we investigate the effect of sleep restriction on endogenous pain modulation in patients with migraine and healthy controls.

Rapidly progressing scalp melanoma in an elderly patient.

A rapidly progressing scalp melanoma incorrectly diagnosed and managed as a 'chronic wound', lead to delayed referral to dermatologist and correct diagnosis. This case highlights the importance of early diagnosis of scalp melanoma and of frailty screening in elderly patients.

Assessment of Occupational Exposure to Inhalable Aerosols in an Instant Powdered Food Manufacturing Plant in Norway.

Background: In the food manufacturing industry, exposure to inhalable aerosols contributes to respiratory illnesses such as occupational asthma and rhinitis. However, there is a lack of comprehensive exposure assessment studies. This study evaluated occupational exposure to inhalable aerosols in an instant powdered food manufacturing plant during work operations involving dried food and powders.

Inflammation related to inhalation of nano and micron sized iron oxides: a systematic review.

Inhalation exposure to iron oxide occurs in many workplaces and respirable aerosols occur during thermal processes (e.g. welding, casting) or during abrasion of iron and steel products (e.

The physical activity paradox; exploring the relationship with pain outcomes. The Tromsø Study 2015-2016.

Paradoxical associations have been observed for leisure-time physical activity (LTPA) and occupational physical activity (OPA) and several health-related outcomes. Typically, higher LTPA is associated with health benefits and high OPA with health hazards. Using data from the Tromsø Study (2015-2016), we assessed how questionnaire-based LTPA and OPA (n = 21,083) and accelerometer-measured physical activity (PA) (n = 6778) relate to pain outcomes.

Symphony of Success: Leader-Practitioner Reciprocity during Evidence-Based Practice Implementation.

This study aimed to explore the reciprocal relationships between implementation leadership and practitioner implementation citizenship behavior during the implementation of evidence-based practices (EBPs). Data were collected at two timepoints with a time lag of six months during a national implementation of evidence-based treatment for post-traumatic stress disorder in Norwegian mental health clinics. Data from 72 leaders and 346 practitioners were analyzed with a two-wave cross-lagged panel model, accounting for the nested structure and adjusting for demographic variables.

Supporting the working life exposome: Annotating occupational exposure for enhanced literature search.

An individual's likelihood of developing non-communicable diseases is often influenced by the types, intensities and duration of exposures at work. Job exposure matrices provide exposure estimates associated with different occupations. However, due to their time-consuming expert curation process, job exposure matrices currently cover only a subset of possible workplace exposures and may not be regularly updated.

Timing of acute cold exposure determines UCP1 and FGF21 expression - Possible interactions between the thermal environment, thermoregulatory responses, and peripheral clocks.

Thermoregulation is synchronized across the circadian cycle to uphold thermal homeostasis. To test if time-of-day matters for the response to environmental cold exposure, mice were acclimated to thermoneutrality (27 °C) for 2 months were subjected acutely (8 h) to cold ambient conditions (15 °C), whereas controls were maintained at thermoneutral conditions. The thermal exposure was tested in separate groups (N = 8) at three distinct time-of-day periods: in the LIGHT phase (L); the DARK phase (D); and a mix of the two (D + L).