Endocan: A biomarker for endothelial dysfunction and inflammation, linking maternal obesity and pediatric obesity in a cohort of preterm neonates

OBJECTIVES

Numerous animal and epidemiologic studies have demonstrated a positive association between maternal obesity in pregnancy and obesity in offspring. The biologic mechanisms of this association remain under investigation. One proposed mechanism includes fetoplacental endothelial dysfunction secondary to inflammation. Endocan is a relatively new biomarker for endothelial dysfunction and inflammation. Our objectives were to examine (1) the association between maternal obesity and neonatal serum endocan at birth, and (2) the association between neonatal serum endocan at birth and pediatric obesity at 24-36 months of age.

STUDY DESIGN

This was a secondary analysis of a prospective cohort of neonates born < 33 weeks gestation. Serum endocan was collected within 48 hours of birth. Serum endocan levels were compared in neonates born to obese mothers vs. those born to non-obese mothers. BMI data were retrospectively collected from cohort neonates between 24 and 36 months of age.

RESULTS

The analysis included 120 mother/neonate dyads. Neonates born to obese mothers had higher median serum endocan at birth compared to neonates born to non-obese mothers (299 ng/L [205-586] vs. 251 ng/L [164-339], p = 0.045). In a linear regression modeled on neonatal serum endocan level, maternal obesity had a statistically significant positive association (p = 0.021). Higher mean serum endocan level at birth was associated with pediatric obesity between 24 and 36 months (obese vs. non-obese offspring; 574 ng/L (222) vs. 321 ng/L (166), p = 0.005).

CONCLUSIONS

In our cohort of preterm neonates, elevated serum endocan at birth was associated with both maternal obesity and downstream pediatric obesity. More research is needed to understand intergenerational transmission of obesity. A large focus has been on epigenetic modification. Endothelial dysfunction and inflammation may play important roles in these pathways. Effective biomarkers, including endocan, may also serve as intermediate outcomes in future pregnancy research.

POS1497-HPR FEASIBILITY OF A PHYSIOTHERAPIST LED, BEHAVIOUR CHANGE INTERVENTION TO IMPROVE PHYSICAL ACTIVITY IN PEOPLE WITH RHEUMATOID ARTHRITIS

Background

Physical activity (PA) is an important component in the management of people with rheumatoid arthritis (RA) (1). Interventions incorporating Behaviour Change (BC) theory are needed to target physically inactive people with RA. The study Physiotherapist-led Intervention to Promote Physical Activity in Rheumatoid Arthritis (PIPPRA) was designed using the Behaviour Change Wheel (BCW) and a pilot study of feasibility undertaken (ClinicalTrials.gov Identifier: NCT03644160).

Objectives

To obtain reliable estimates regarding recruitment rates; participant retention; protocol adherence and possible adverse events, and to producing estimates of the potential effect sizes of the BC intervention on changes in outcomes of physical activity; fatigue; disability and quality of life.

Methods

Participants were recruited at University Hospital (UH) rheumatology clinics and randomly assigned to control group (physical activity information leaflet) or intervention group (four BC physiotherapy sessions in eight weeks). Inclusion criteria were diagnosis of RA (ACR/EULAR 2010 classification criteria), aged 18+ years and classified as insufficiently physically active. Ethical approval was obtained from the UH research ethics committee. Participants were assessed at baseline (T0), 8-weeks (T1), and 24-weeks (T2). Descriptive statistics and t-tests were used to analyse the data with SPSS v22.

Results

320 participants were identified through chart review with direct contact then with people meeting the inclusion criteria at rheumatology clinics. Of the clinic attendees n=183 (57%) were eligible to participate and n=58 (55%) of those consented to participate. The recruitment rate was 6.4 per month and refusal rate was 59%. Due to impact of COVID-19 on the study n=25 (43%) participants completed the study (n=11 (44%) in intervention and n=14 (56%) in control). Of the 25, n= 23 (92%) were female, mean age was 60 years (sd 11.5). Intervention group participants completed 100% of BC sessions 1 & 2, 88% session 3 and 81% session 4. No serious adverse events were reported. Secondary outcome measures data is Table 1.

Table 1.

Mean (sd) for secondary outcome measures in PIPPRA feasibility study

Outcomes and instrumentsInterventionControlBaseline Mean (sd)Time 1 Mean (sd)Time 2 Mean (sd)Baseline Mean (sd)Time 1 Mean (sd)Time 2 Mean (sd)Physical Activity – self report (YPAS1)146.27 (193.73)120.88 (70.80)132.00 (70.65)91.75 (85.86)58.03 (50.61)124.31 (69.75)Physical Activity – objective (Step Count)32,616.9132,190.0027,793.3330,476.1542,117.2534,288.77(11,415.85)(9,291.57)(7,426.92)(12,642.97)(21,714.67)(17,677.90)Pain (VAS2)4.184.904.503.715.104.79(2.40)(1.91)(1.90)(2.55)(2.77)(4.50)Disability (HAQDI3)0.850.941.030.710.711.52(0.57)(0.57)(0.65)(0.56)(0.52)(0.69)Fatigue (BRAF MDQ4)18.1814.82 (13.15)18.55 (11.84)15.71 (12.29)13.93 (15.27)20.21 (10.85)(8.98)Psychological Constructs (TPB5)22.0019.91 (7.76)20.27 (8.63)21.79 (5.67)15.50 (11.43)25.36 (6.86)(4.84)Quality of Life (RA QoL6)15.1814.73 (7.23)17.09 (7.33)18.4311.50 (10.02)14.86 (6.47)(6.08)(5.06)Sleep (PSQI7)11.558.509.9110.219.0910.14(3.56)(3.27)(3.62)(3.47)(4.32)(4.42)

1YPAS – Yale Physical Activity Scale

2VAS – Visual Analogue Scale

3HAQDI – Health Assessment Questionnaire Disability Index

4BRAF MDQ - Bristol Rheumatoid Arthritis Fatigue Multidimensional Questionnaire

5TPB – Theory of Planned Behaviour Questionnaire

6RA QoL – Rheumatoid Arthritis Quality of Life Scale

7PSQI – Pittsburgh Sleep Quality Index

Conclusion

The PIPPRA study designed using the BCW to improve promote physical activity was feasible and safe. This pilot study provides a framework for larger intervention studies and based on these findings a fully powered trial is recommended.

References

[1]Rausch Osthoff A, Niedermann K, Braun J, et al. (2018) EULAR recommendations for physical activity in people with inflammatory arthritis and osteoarthritis. Annals of the Rheumatic Diseases 77:1251-1260.

Disclosure of Interests

None declared

POS1511-HPR “I LEARNT SO MUCH ABOUT MY APPROACH TO BEING ACTIVE”: EXPERIENCES OF PEOPLE WITH RHEUMATOID ARTHRITIS ON THE IMPACT OF A PHYSIOTHERAPIST LED INTERVENTION TO PROMOTE PHYSICAL ACTIVITY

Background

Physical activity is an important component in the management of people with rheumatoid arthritis (RA) [1]. A Physiotherapist-led Intervention to Promote Physical Activity in people with RA (PIPPRA) was undertaken using the Behaviour Change Wheel, with the aim of examining the feasibility of promoting physical activity in RA. This qualitative study involved participants and health care professionals who participated and were involved in a behaviour change pilot RCT intervention.

Objectives

To determine, qualitatively, the acceptability of PIPPRA to participants with RA and health care professionals, in order to capture their reality.

Methods

A qualitative study design of face-to-face semi-structured interviews was undertaken. The interview schedule explored the following areas: experience of the intervention; unintended consequences; experience and suitability of outcome measures used; views regarding the intervention; perceptions of behaviour change and physical activity. Interviews were transcribed verbatim by a professional transcriber. Thematic analysis was used as an analytical approach [2]. The research team searched for patterns, analysed and coded the data, and generated themes and sub-themes. Themes were reviewed by the research team to check if they worked in relation to the coded extracts and the entire data set. The COREQ checklist provided guidance throughout [3].

Results

Fourteen participants [13 female/1 male; mean age of 59 (SD 6.3); mean RA diagnosis of 8.6 (SD 6.8) years; moderate to severe disability (HAQ-DI: 1.4 (SD 0.50)] and 8 healthcare staff [4 female/4 male; mean age of 41 (SD 5.6)] participated. Three main themes were generated from participants:- 1) Positive experience of behaviour change intervention - “I found it very knowledgeable to help you get stronger”; 2) Improvement in self-management - “…….motivate me maybe to go back to doing a little bit more exercise”; 3) Negative impact of COVID-19 on intervention – “I don’t think doing it online again would be really good at all”. Two main themes from health care professionals:- 1) Positive learning experience of behaviour change delivery – “Really made me realise the importance of discussing physical activity with patients”; 2) Positive approach to recruitment – “Very professional team showing the importance of having a study member on site”.

Conclusion

The findings demonstrated that participants had a positive experience of being involved in a behaviour change intervention in order to improve their physical activity and found it acceptable as an intervention. However, if given the choice they would prefer the intervention delivery face to face rather than telehealth. Healthcare professionals also had a positive experience and in particular found it beneficial to their own development, in particular the importance of recommending PA to patients.

References

[1]Rausch Osthoff A, Niedermann K, Braun J, et al. (2018) EULAR recommendations for physical activity in people with inflammatory arthritis and osteoarthritis. Annals of the Rheumatic Diseases 77:1251-1260

[2]Clarke, V. and Braun, V., 2014. Thematic analysis. In Encyclopedia of critical psychology (pp. 1947-1952). Springer, New York, NY

[3]Tong, A., Sainsbury, P. and Craig, J., 2007. Consolidated criteria for reporting qualitative research (COREQ): a 32-item checklist for interviews and focus groups. International journal for quality in health care, 19(6), pp.349-357

Disclosure of Interests

None declared

AB0872-HPR IMPACT OF COVID-19 ON A PHYSICAL ACTIVITY FEASIBILITY PILOT STUDY: THE PIPPRA EXPERIENCE

Background:

The PIPPRA (Physiotherapist-led Intervention to Promote Physical Activity in Rheumatoid Arthritis) project is a feasibility project examining the impact of a physical activity behaviour change intervention in people who have rheumatoid arthritis (RA). The PIPPRA study recruitment commenced in October 2019, with participant assessment and intervention commencing in November 2019. In the Republic of Ireland people who have RA are categorised as high risk category for Covid-19, due to immunosuppression [1], although this categorisation contrasts with EULAR’s provisional recommendations [2].

Objectives:

To examine the impact of the Covid-19 pandemic and public health restrictions on a pilot randomised controlled feasibility study in 2020.

Methods:

Participants (aged 18 years+, diagnosis of RA, independently mobile and low levels of physical activity [3]) were recruited from a rheumatology clinic at an urban hospital. Target recruitment was four participants per month for one year (N=48). Assessments were planned at baseline, eight and twenty-four weeks (N=144). Participants were randomised to intervention group or control group. The intervention group received four 1:1 sixty minute sessions with a physiotherapist (N=96). The intervention was delivered over eight weeks. Intervention and control groups received a physical activity information leaflet.

Results:

The Covid-19 pandemic and associated public health restrictions forced the study to be formally paused in April 2020 and the study formally resumed in August 2020. N=48 participants were recruited between October 2019 and March 2020 (six months). N=20 participants have commenced in the study, N=16 are awaiting baseline assessment, N=6 withdrew and N=6 were lost to follow-up prior to baseline. Trial protocol planned for the delivery of N=55 assessments and N=36 intervention sessions for participants who had commenced in the study. N=22 assessments and N=26 intervention sessions were delivered between November 2019 and March 2020. N=5 assessments and N=6 intervention sessions were conducted between August and October 2020. No assessment or intervention delivery occurred in November-December 2020 due to participant hesitancy in attending for assessment and/or intervention with increased public health restrictions. The impact of Covid-19 restrictions resulted in N=33 (60%) deviations from assessment protocol and N=10 (27%) deviations from intervention delivery protocol (Figure 1).

Figure 1.

Deviations from assessment and intervention protocol in the PIPPRA study

Conclusion:

The Covid-19 pandemic has had a significant impact on the delivery of the PIPPRA study. Feasibility study outcomes, including participant retention rate, and study delivery as per protocol, have been affected due to the Covid-19 pandemic. Participant reluctance to attend face-to-face sessions demonstrates the need to consider alternative methods of delivery, e.g. virtual delivery of interventions, where attending in person is not acceptable to participants [4], in future studies.

References:

[1]Health Service Executive. (2019). People at higher risk from COVID-19.Accessed 5th Jan 2020 https://www2.hse.ie/conditions/coronavirus/people-at-higher-risk.html.

[2]Landewé RB et al (2020). EULAR provisional recommendations for the management of rheumatic and musculoskeletal diseases in the context of SARS-CoV-2. Annals of the Rheumatic Diseases 79:851-858.

[3]Godin, G. (2011). The Godin-Shephard leisure-time physical activity questionnaire. The Health & Fitness Journal of Canada, 4(1):18-22.

[4]Inan, OT et al. (2020). Digitizing clinical trials. npj Digit. Med. 3:10.

Disclosure of Interests:

None declared

Prevalence of depression in patients with type 2 diabetes mellitus in Irish primary care and the impact of depression on the control of diabetes

BACKGROUND

As the Irish population ages, the management of chronic conditions in primary care is emerging as a challenge. The presence of co-morbid depression is common among such patients and may affect their response to treatment.

AIMS

This study sought to determine whether the prevalence of depression is higher in patients with type 2 diabetes mellitus than in the population aged >50 in the West of Ireland, and whether depression is an independent predictor of diabetes control.

METHODS

We used a cross-sectional design to examine an anonymized database of 9,698 patients aged >50 years whose medical data were collected as part of NUI Galway's CLARITY study. Glycosylated HbA1c levels were used to estimate type 2 DM control; depression was assessed using the Hospital Anxiety and Depression Scale.

RESULTS

We found that while there is a higher prevalence of severe depression in patients with type 2 DM, there is no association between their diabetes control and depression after controlling for age, gender, comorbidity and GMS status. Multimorbidity is a significant predictor of depression in both diabetic and non-diabetic populations, with the odds of depression increasing as the number of co-morbidities increased.

CONCLUSIONS

Patients with type 2 DM are more likely to suffer from severe depression than those without. Depression itself is not an independent predictor of diabetes control. However, it may be that the increased rates of depression observed in patients with type 2 DM are at least partially attributable to the burden of additional illnesses seen in these patients.

The early use of minimal enteral nutrition in extremely low birth weight newborns

OBJECTIVE

To gather information regarding the efficacy of early minimal enteral nutrition on overall feeding tolerance in extremely low birth weight infants.

STUDY DESIGN

Prospective randomized controlled trial comparing the early use of minimal enteral nutrition in extremely low birth weight infants from day 2 to day 7 vs control infants. On day 8, feeding volume in both groups were advanced by 10 ml kg(-1) day(-1) until full enteral feedings were reached. Time to full feeds, number of intolerance episodes, anthropometric measurements, peak total bilirubin levels, incidence of necrotizing enterocolitis and incidence of sepsis were compared between the two groups with t-test and chi (2) test.

RESULT

Eighty-four infants were enrolled in the study but only 61 infants completed the feeding protocol. No statistically significant differences were found between the groups with regards to growth patterns, feeding tolerance, mortality, length of hospital stay and incidence of sepsis and necrotizing enterocolitis.

CONCLUSION

Early minimal enteral nutrition use in extremely low birth weight infants did not improve feeding tolerance.

Selection bias in enrollment to a programme aimed at the secondary prevention of ischaemic heart disease in general practice: a cohort study

OBJECTIVE

To evaluate differences between adults who participated in a secondary prevention of ischaemic heart disease (IHD) programme and those who did not.

DESIGN

Population-based cohort study.

SETTING

A random selection of 12 Irish general practices.

PARTICIPANTS

A total of 493 adults with IHD identified in 2000/2001.

INTERVENTION

Medical records search and postal questionnaires in 2000/2001 and 2005/2006.

MAIN OUTCOME MEASURES

Differences in demographic characteristics and indicators of process of care and risk factor management between participants and non-participants.

RESULTS

Multiple logistic regression confirmed that female gender was associated with a reduced likelihood of participation in the secondary prevention programme [odds ratio (OR) 0.53 (95% CI: 0.32-0.87)], while an adequately controlled total cholesterol level was associated with an increased likelihood of enrollment [OR 1.82 (95% CI: 1.18-2.80)].

CONCLUSIONS

There is limited evidence that biases, which have been shown to affect participation in research, also affect participation in care programmes in everyday practice. A gender bias appears to have affected the enrollment of participants for the secondary preventive programme considered by this study, with enrollment favouring men with well-managed cholesterol. Reimbursement dependent upon patient adherence may incentivise the enrollment of adherent patients, although the influence of patient choice is unclear: the need to maintain records relating to patients who opt out of such interventions is thus highlighted.

Food and nutrient intakes of a population sample of 7-year-old children in the south-west of England in 1999/2000 - what difference does gender make?

OBJECTIVES

To describe the diet of schoolchildren aged 7 years, and identify gender differences in food and nutrient intakes.

SUBJECTS

A cohort of children resident in the south-west of England in 1999/2000.

METHODS

Diet was assessed using three 1-day unweighed food diaries. Nutrient intakes were compared with dietary reference values for this age group, and with children aged 7-10 years in the British National Diet and Nutrition Survey. Food and nutrient intakes were contrasted between boys and girls.

RESULTS

Median nutrient intakes exceeded the reference nutrient intake (RNI) for most nutrients. Median intakes of iron and zinc were below the RNI. Median sodium intake was greater than the maximum set by the Scientific Advisory Committee on Nutrition. The mean energy intake for boys and girls, respectively, were 7.3 and 6.8 MJ, this is below the estimated average requirement. The percentage of energy from fat was 35.3% for boys and 36.1% for girls. Boys had higher iron intakes than girls, even after adjustment for energy intake. There were differences in the types of foods eaten between boys and girls; girls ate more fruit and vegetables (P = 0.001) and boys ate more breakfast cereals (P = 0.016).

CONCLUSIONS

The dietary intakes of these 7-year-old children were adequate for most nutrients. However, a reduction in the sodium content of the diet would be advantageous. Fruit and vegetable consumption should be encouraged particularly among boys.

Stress, infection and preterm birth: a biobehavioural perspective

Preterm birth is currently the most important problem in maternal-child health in the United States. Epidemiological studies have suggested that two factors, maternal stress and maternal urogenital tract infection, are significantly and independently associated with an increased risk of spontaneous preterm birth. These factors are also more prevalent in the population of sociodemographically disadvantaged women who are at increased risk for preterm birth. Studies of the physiology of parturition suggest that neuroendocrine and immune processes play important roles in the physiology and pathophysiology of normal and preterm parturition. However, not all women with high levels of stress and/or infection deliver preterm, and little is understood about factors that modulate susceptibility to pathophysiological events of the endocrine and immune systems in pregnancy. We present here a comprehensive, biobehavioural model of maternal stress and spontaneous preterm delivery. According to this model, chronic maternal stress is a significant and independent risk factor for preterm birth. The effects of maternal stress on preterm birth may be mediated through biological and/or behavioural mechanisms. We propose that maternal stress may act via one or both of two physiological pathways: (a) a neuroendocrine pathway, wherein maternal stress may ultimately result in premature and/or greater degree of activation of the maternal-placental-fetal endocrine systems that promote parturition; and (b) an immune/inflammatory pathway, wherein maternal stress may modulate characteristics of systemic and local (placental-decidual) immunity to increase susceptibility to intrauterine and fetal infectious-inflammatory processes and thereby promote parturition through pro-inflammatory mechanisms. We suggest that placental corticotropin-releasing hormone may play a key role in orchestrating the effects of endocrine and inflammatory/immune processes on preterm birth. Moreover, because neuroendocrine and immune processes extensively cross-regulate one another, we further posit that exposure to both high levels of chronic stress and infectious pathogens in pregnancy may produce an interaction and multiplicative effect in terms of their combined risk for preterm birth. Finally, we hypothesise that the effects of maternal stress are modulated by the nature, duration and timing of occurrence of stress during gestation. A discussion of the components of this model, including a theoretical rationale and review of the available empirical evidence, is presented. A major strength of this biobehavioural perspective is the ability to explore new questions and to do so in a manner that is more comprehensive than has been previously attempted. We expect findings from this line of proposed research to improve our present state of knowledge about obstetric risk assessment for preterm birth by determining the characteristics of pregnant women who are especially susceptible to stress and/or infection, and to broaden our understanding of biological (endocrine, immune, and endocrine-immune interactions) mechanisms that may translate social adversity during pregnancy into pathophysiology, thereby suggesting intervention strategies.

Thoracotomy for persistent bronchopleural fistula in the very low birth weight infant

Although conservative treatment is appropriate for most very low birth weight infants with bronchopleural fistulas, early surgical closure may improve survival in properly selected patients. We report our experience with successful surgical closure in 3 consecutive neonates weighing <800 g.

An historical context for behavioral models of hypertension

OBJECTIVE

The purpose of this study is provide an historical context for current behavioral models of hypertension.

METHODS

A selective sample of the cardiovascular reactivity literature was reviewed, from 1932 to present.

RESULTS

In the earliest model, cardiovascular reactivity was regarded as a marker of disease risk; however, in later models, reactivity came to be viewed as a causal influence in the development of hypertension. As the models evolved, the underlying assumptions changed. Thus, the risk marker model assumed that cardiovascular responses to stress were a stable, generalized characteristic of the individual, and therefore the eliciting stimuli were arbitrary. The later models, however, assume that the nature of the eliciting stimulus is a determinant of the cardiovascular response. We describe the increasing complexity of the four models, and contrast their underlying assumptions and the implications of these assumptions.

CONCLUSION

We provide an overview of study designs and variables that should be incorporated into studies seeking to understand the ways in which cardiovascular responses to stress may influence the development of hypertension.

Corticotrophin-releasing hormone and fetal responses in human pregnancy

During human pregnancy, maternal and fetal compartments of the human placenta produce and release corticotrophic-releasing hormone (CRH). Elevations of placental CRH are associated with decreased gestational length (including preterm delivery). The effects of elevated placental CRH on human fetal neurological development are not known. Pregnant women in the 31st and 32nd week of gestation consented to procedures for collection of blood and measurement of fetal heart rate (FHR) in response to a series of 40 vibro-acoustic stimuli (VAS). Measures of habituation and dishabituation were calculated from the FHR. All subjects were followed to delivery. Fetuses (N = 33) of women with highly elevated CRH were least responsive (p < .03) to stimulation after presentation of a novel (dishabituating) stimulus with control for parity, fetal gender, medical (antepartum) risk, and gestational length at term. In a larger sample (N = 156) a polynomial model predicted the pattern of FHR reactivity for the first 15 trials. Placental CRH concentration significantly predicted FHR reactivity after controlling for the effects of trial number, baseline FHR, inter-trial interval, and presence of uterine contractions. Increased maternal CRH levels were significantly related to the length of gestation after controlling for the effects of fetal gender, parity, and medical risk (p = .05). The relationship between length of gestation and FHR was not significant suggesting separate actions of CRH on these events. Elevated placental CRH appears to accelerate certain developmental events (gestational length) and may influence the fetal nervous system. The impaired fetal responses to novelty and increased arousal observed in this study suggest that neurological systems may be targets for placental CRH during sensitive developmental periods.

Ping-pong ball plombage for right postpneumonectomy syndrome in children

BACKGROUND/PURPOSE

Right postpneumonectomy syndrome is a rare complication of pneumonectomy characterized by exertional dyspnea resulting from mediastinal shift into the empty hemithorax. Historically, this problem has been treated with thoracoplasty, muscle flap transposition, pericardial fixation, and plombage using a variety of materials. Significant postoperative complications have been reported with each of these methods. In an effort to avoid the problems known to be associated with other plombage materials, we have used sterilized ping-pong balls as plombage to treat the postpneumonectomy syndrome.

METHODS

Two children with pneumonectomy syndrome were treated with ping-pong ball plombage.

RESULTS

Symptoms improved immediately in both patients and postoperative chest x-rays in each showed a normal cardiac position. Neither child had a postoperative complication. Six-year follow-up chest films in both children have demonstrated some fluid filling of the ping-pong balls, but no clinical problems attributable to them have been noted.

CONCLUSION

The authors conclude that ping-pong ball plombage appears to be a viable management option in children with right postpneumonectomy syndrome.