Low CD4 + T cell count is related to specific anti-nuclear antibodies, IFNα protein positivity and disease activity in systemic lupus erythematosus pregnancy

BACKGROUND

Lymphopenia, autoantibodies and activation of the type I interferon (IFN) system are common features in systemic lupus erythematosus (SLE). We speculate whether lymphocyte subset counts are affected by pregnancy and if they relate to autoantibody profiles and/or IFNα protein in SLE pregnancy.

METHODS

Repeated blood samples were collected during pregnancy from 80 women with SLE and 51 healthy controls (HC). Late postpartum samples were obtained from 19 of the women with SLE. Counts of CD4 + and CD8 + T cells, B cells and NK cells were measured by flow cytometry. Positivity for anti-nuclear antibodies (ANA) fine specificities (double-stranded DNA [dsDNA], Smith [Sm], ribonucleoprotein [RNP], chromatin, Sjögren's syndrome antigen A [SSA] and B [SSB]) and anti-phospholipid antibodies (cardiolipin [CL] and β2 glycoprotein I [β2GPI]) was assessed with multiplexed bead assay. IFNα protein concentration was quantified with Single molecule array (Simoa) immune assay. Clinical data were retrieved from medical records.

RESULTS

Women with SLE had lower counts of all lymphocyte subsets compared to HC throughout pregnancy, but counts did not differ during pregnancy compared to postpartum. Principal component analysis revealed that low lymphocyte subset counts differentially related to autoantibody profiles, cluster one (anti-dsDNA/anti-Sm/anti-RNP/anti-Sm/RNP/anti-chromatin), cluster two (anti-SSA/anti-SSB) and cluster three (anti-CL/anti-β2GPI), IFNα protein levels and disease activity. CD4 + T cell counts were lower in women positive to all ANA fine specificities in cluster one compared to those who were negative, and B cell numbers were lower in women positive for anti-dsDNA and anti-Sm compared to negative women. Moreover, CD4 + T cell and B cell counts were lower in women with moderate/high compared to no/low disease activity, and CD4 + T cell count was lower in IFNα protein positive relative to negative women. Finally, CD4 + T cell count was unrelated to treatment.

CONCLUSION

Lymphocyte subset counts are lower in SLE compared to healthy pregnancies, which seems to be a feature of the disease per se and not affected by pregnancy. Our results also indicate that low lymphocyte subset counts relate differentially to autoantibody profiles, IFNα protein levels and disease activity, which could be due to divergent disease pathways.

Long-term results of a short-term home-based pre- and postoperative exercise intervention on physical recovery after colorectal cancer surgery (PHYSSURG-C): a randomized clinical trial

AIM

The aim of this work was to assess the effect of a short-term, home-based exercise intervention before and after colorectal cancer surgery on 12-month physical recovery within a previously reported randomized control trial (RCT).

METHOD

PHYSSURG-C is an RCT in six participating hospitals in Sweden. Patients aged ≥20 years planned for elective colorectal cancer surgery were eligible. The intervention consisted of unsupervised moderate-intensity physical activity 2 weeks preoperatively and 4 weeks postoperatively. Usual care was control. The primary outcome measure in PHYSSURG-C was self-assessed physical recovery 4 weeks postoperatively. The predefined long-term follow-up outcomes included: self-assessed physical recovery 12 months postoperatively and reoperations and readmissions 91-365 days postoperatively. The statistical models were adjusted with tumour site (colon or rectum), neoadjuvant therapy (none, radiotherapy or chemo/radiotherapy) and type of surgery (open or laparoscopic).

RESULTS

A total of 616 participants were available for the 12-month follow-up. Groups were balanced at baseline regarding demographic and treatment variables. There was no effect from the intervention on self-reported physical recovery [adjusted odds ratio (OR) 0.91, p = 0.60], the risk of reoperation (OR 0.97, p = 0.91) or readmission (OR 0.88, p = 0.58).

CONCLUSION

The pre- and postoperative unsupervised moderate-intensity exercise intervention had no effect on long-term physical recovery after elective colorectal cancer surgery. There is still not enough evidence to support clinical guidelines on preoperative exercise to improve outcome after colorectal cancer surgery.

First mobilisation after abdominal and cardiothoracic surgery: when is it actually performed? A national, multicentre, cross-sectional study

OBJECTIVES

Knowledge of clinical practice regarding mobilisation after surgery is lacking. This study therefore aimed to reveal current mobilisation routines after abdominal and cardiothoracic surgery and to identify factors associated with mobilisation within 6 hours postoperatively.

DESIGN

A prospective observational national multicentre study.

SETTING

18 different hospitals in Sweden.

PARTICIPANTS

1492 adult patients undergoing abdominal and cardiothoracic surgery with duration of anaesthesia>2 hours.

PRIMARY AND SECONDARY OUTCOMES

Primary outcome was time to first postoperative mobilisation. Secondary outcomes were the type and duration of the first mobilisation. Data were analysed using multivariate logistic regression and general structural equation modelling, and data are presented as ORs with 95% CIs.

RESULTS

Among the included patients, 52% were mobilised to at least sitting on the edge of the bed within 6 hours, 70% within 12 hours and 96% within 24 hours. Besides sitting on the edge of the bed, 76% stood up by the bed and 22% were walking away from the bedside the first time they were mobilised. Patients undergoing major upper abdominal surgery required the longest time before mobilisation with an average time of 11 hours post surgery. Factors associated with increased likelihood of mobilisation within 6 hours of surgery were daytime arrival at the postoperative recovery unit (OR: 5.13, 95% CI: 2.16 to 12.18), anaesthesia <4 hours (OR: 1.68, 95% CI: 1.17 to 2.40) and American Society of Anaesthesiologists (ASA) classification 1-2, (OR: 1.63, 95% CI: 1.13 to 2.36).

CONCLUSIONS

In total, 96% if the patients were mobilised within 24 hours after surgery and 52% within 6 hours. Daytime arrival at the postoperative recovery unit, low ASA classification and shorter duration of anaesthesia were associated with a shorter time to mobilisation.

TRIAL REGISTRATION NUMBER

FoU, Forskning och Utveckling in VGR, Vastra Gotaland Region (Id:275357) and Clinical Trials (NCT04729634).

Nurse anaesthetists' experiences of student nurse anaesthetist learning during clinical practice: a qualitative interview study

BACKGROUND

The professional role of a nurse anaesthetist involves taking a pedagogical approach towards students, including supervision during clinical practice. Although supervisors are facilitators of student learning, they are offered little training in adult learning principles. The aim of this study was to describe supervisors' experience of student nurse anaesthetist learning during clinical practice in the operating room.

METHOD

In this qualitative interview study, 12 semi-structured individual interviews were carried out with clinical supervising nurse anaesthetists. The data were analysed inductively using thematic analysis.

RESULTS

The results are illustrated with one theme and five sub-themes. The clinical learning situation of student nurse anaesthetists is described as a reflection of different cultures coming together. The operating room environment is a new context to students, and students enter with different clinical background and experiences. There is tension in facilitating student learning due to demands for productivity; supervisors suggest the use of separate operating rooms with a special focus on learning in the future.

CONCLUSION

Clinical practice facilitates student learning and is a parallel process to routine care. Thus, it requires the cultures of higher education and healthcare organizations to co-exist. This is illustrated with the theme "Contributing to students' future professional roles by bridging the hospital and university cultures". In the operating room, student learning is challenged by a new context and time pressure as shown by subthemes. To overcome challenges and support student learning in the operating room from a supervisors' perspective, interprofessional student teams are suggested as a future approach and need to be further investigated.

Inclusion body myositis with early onset: a population-based study

INTRODUCTION

Inclusion body myositis (IBM), an inflammatory myopathy with progressive weakness without efficient treatment, typically presents after 45 years of age and younger patients are sparsely studied.

METHODS

In a population-based study during a 33-year period, 142 patients with IBM were identified in western Sweden. Six patients fell outside the European Neuromuscular Centre 2011 criteria for IBM due to young age at symptom onset, verified by a muscle biopsy < 50 years of age. These were defined as early-onset IBM and included in this study. Medical records, muscle strength, comorbidities, muscle biopsies, and nuclear- and mitochondrial DNA were examined and compared with patients with IBM and age matched controls from the same population.

RESULTS

The median age at symptom onset was 36 (range 34-45) years and at diagnosis 43 (range 38-58) years. Four patients were deceased at a median age of 59 (range 50-75) years. The median survival from diagnosis was 14 (range 10-18) years. The prevalence December 31 2017 was 1.2 per million inhabitants and the mean incidence 0.12 patients per million inhabitants and year. The mean decline in quadriceps strength ± 1 standard deviation was 1.21 ± 0.2 Newton or 0.91 ± 0.2% per month and correlated to time from diagnosis (p < 0.001). Five patients had swallowing difficulties. All patients displayed mitochondrial changes in muscle including cytochrome c oxidase deficiency and the mitochondrial DNA mutation load was high.

CONCLUSIONS

Early-onset IBM is a severe disease, causing progressive muscle weakness, high muscle mitochondrial DNA mutation load and a reduced cumulative survival in young and middle-aged individuals.

The Family Involvement in Care Questionnaire-An instrument measuring family involvement in inpatient care

BACKGROUND

Family involvement in care can be seen as a prerequisite for high-quality family-centered care. It has been identified to improve both patient safety and the quality of care by reducing patient complications and hospital length of stay.

OBJECTIVE

To develop and evaluate the content validity of a questionnaire measuring family involvement in inpatient care.

METHODS

The study followed a systematic approach in building a rigorous questionnaire: identification of domain, item generation, and assessment of content validity. The content validity index was calculated based on ratings of item relevance by an expert group consisting of seven senior nurses. Subsequently, 19 online cognitive interviews using the Think-aloud method were conducted with family members of former patients who had undergone open-heart surgery.

RESULTS

Five aspects of family involvement were identified, and the initial pool of items were selected from two preexisting questionnaires. The experts' ratings resulted in item content validity of 0.71-1.00, and the scale content validity/averaging was 0.90, leading to rewording, exclusion, and addition of items. The pretesting of items through two rounds of cognitive interviews with family members resulted in the identification of three main problem areas: defining family involvement, misinterpretation of different terms, and underuse of the not relevant response option. The problems were adjusted in the final version of the questionnaire, which consists of 16 items with a four-point Likert scale and two open-ended items.

CONCLUSIONS

The Family Involvement in Care Questionnaire has demonstrated potential in evaluating family involvement in inpatient care. Further psychometric properties regarding reliability and validity need to be established.

Low-density granulocytes are related to shorter pregnancy duration but not to interferon alpha protein blood levels in systemic lupus erythematosus

BACKGROUND

An increased risk of pregnancy complications is seen in women with systemic lupus erythematosus (SLE), but the specific immunopathological drivers are still unclear. Hallmarks of SLE are granulocyte activation, type I interferon (IFN) overproduction, and autoantibodies. Here we examined whether low-density granulocytes (LDG) and granulocyte activation increase during pregnancy, and related the results to IFNα protein levels, autoantibody profile, and gestational age at birth.

METHODS

Repeated blood samples were collected during pregnancy in trimesters one, two, and three from 69 women with SLE and 27 healthy pregnant women (HC). Nineteen of the SLE women were also sampled late postpartum. LDG proportions and granulocyte activation (CD62L shedding) were measured by flow cytometry. Plasma IFNα protein concentrations were quantified by single molecule array (Simoa) immune assay. Clinical data were obtained from medical records.

RESULTS

Women with SLE had higher LDG proportions and increased IFNα protein levels compared to HC throughout pregnancy, but neither LDG fractions nor IFNα levels differed during pregnancy compared to postpartum in SLE. Granulocyte activation status was higher in SLE relative to HC pregnancies, and it was increased during pregnancy compared to after pregnancy in SLE. Higher LDG proportions in SLE were associated with antiphospholipid positivity but not to IFNα protein levels. Finally, higher LDG proportions in trimester three correlated independently with lower gestational age at birth in SLE.

CONCLUSION

Our results suggest that SLE pregnancy results in increased peripheral granulocyte priming, and that higher LDG proportions late in pregnancy are related to shorter pregnancy duration but not to IFNα blood levels in SLE.

Sex differences in dementia: on the potentially mediating effects of educational attainment and experiences of psychological distress

BACKGROUND

Old-age dementias are known to disproportionally affect women as well as individuals with low educational attainment. The higher lifetime risk of dementia among women is usually attributed to their longer life expectancy. However, the impact of sex, and subsequent gender inequity, is likely to be more multifaceted than this explanation implies. Not least because of historical inequities in access to education between the sexes and the gender and socio-economic gradients in risk factors such as stress, depression and social isolation. Consequently, the present study sought to test whether differences in educational attainment and experiences of general psychological distress mediate the association between female sex and dementia.

METHODS

The study utilizes data obtained through the Gothenburg H70 Birth Cohort Study and the Prospective Populations Study on Women (n = 892). Data were analysed using Confirmatory Factor Analysis (CFA) and Structural Equation Modelling (SEM) with Weighted Least Squares Means and Variance adjusted (WLSMV) estimation. General psychological distress was indicated by a latent variable and constructed from five manifest items (previous depression, stress, self-esteem, chronic loneliness and satisfaction with social situation) that were all measured at baseline.

RESULTS

While the results could not corroborate that education directly mediates the effect of sex on dementia, level of distress was predicted by both female sex (0.607, p < .001) and education (- 0.166, p < .01) and, in turn, shown to be significantly associated with dementia (0.167, p < .05), also after controlling for confounders. When time from baseline to diagnosis was increased through sequential exclusion of dementia cases, the effect of distress on dementia was no longer significant.

CONCLUSION

The overall findings suggest that social (dis) advantage predicts general psychological distress, which thereby constitutes a potential, and rarely acknowledged, pathway between female sex, education, and dementia. They further underline the importance of attending to both education and distress as 'gendered' phenomena when considering the nature of their associations with dementia. However, the possibility of reverse causality bias must be acknowledged and the need for longitudinal studies with longer follow-up stressed.