The C-Terminal of NaV1.7 Is Ubiquitinated by NEDD4L

NaV1.7, the neuronal voltage-gated sodium channel isoform, plays an important role in the human body's ability to feel pain. Mutations within NaV1.7 have been linked to pain-related syndromes, such as insensitivity to pain. To date, the regulation and internalization mechanisms of the NaV1.7 channel are not well known at a biochemical level. In this study, we perform biochemical and biophysical analyses that establish that the HECT-type E3 ligase, NEDD4L, ubiquitinates the cytoplasmic C-terminal (CT) region of NaV1.7. Through in vitro ubiquitination and mass spectrometry experiments, we identify, for the first time, the lysine residues of NaV1.7 within the CT region that get ubiquitinated. Furthermore, binding studies with an NEDD4L E3 ligase modulator (ubiquitin variant) highlight the dynamic partnership between NEDD4L and NaV1.7. These investigations provide a framework for understanding how NEDD4L-dependent regulation of the channel can influence the NaV1.7 function.

The effect on the T-14 paediatric throat disorders outcome score of delaying adenotonsillectomy surgery due to COVID-19

INTRODUCTION

Adenotonsillectomy is commonly performed for recurrent tonsillitis and obstructive sleep apnoea. These conditions may improve with age. The COVID-19 pandemic led to all UK elective surgery being suspended. This study aimed to determine whether delaying surgery had any effect on a patient's symptoms using the validated T-14 paediatric throat disorders outcome test.

METHODS

Patients completed a T-14 questionnaire when the child was listed for surgery; this was repeated on the revised surgery date and a paired t test was used to compare the responses.

RESULTS

Questionnaires were completed by 29 patients a mean of 6.4 months apart. There was a significant improvement in scores (p<0.02) for five domains: eating habits, visits to a doctor/A&E, antibiotics for less than 2 weeks, chronic infections and school missed due to sore throats.

CONCLUSIONS

This study demonstrates that following delays resulting from the COVID-19 pandemic, paediatric patients experienced an improvement in some aspects of their quality of life while awaiting tonsillectomy and/or adenoidectomy. This was most apparent in quality-of-life measures relating to recurrent tonsillitis, namely visits to a doctor/A&E, antibiotics for less than 2 weeks, chronic infections and school missed due to sore throats. Patients may experience an improvement in some of their individual symptoms, in particular their infective symptoms, during an observation period.

Nutritional Management of Children with Food Allergies

Purpose of the Review

The purpose of the review is to review the evidence for the nutritional management of paediatric food allergy and provide a practical approach for healthcare professionals working in this area.

Recent Findings

Dietary elimination remains the mainstay for management of food allergies in children. However, the elimination of food allergens increases the risk for growth faltering, micronutrient deficiencies and feeding difficulties. Breastmilk remains the ideal source of nutrition for infants, but when not available, the vast majority will tolerate an extensively hydrolysed formula, and rice hydrolysate has also been suggested as a suitable alternative. Only in severe cases, including anaphylaxis, eosinophilic oesophagitis and growth faltering, is an amino acid formula indicated. The early introduction of peanut and egg and avoiding the delay in the introduction of other allergens, when not already allergic, has been highlighted by recent studies.

Summary

Whilst the elimination of allergens increases the risk of developing poor growth, micronutrient deficiencies and feeding difficulties, optimal, early dietary input, including advice on active introduction of allergens and alternative feeds, ideally from a registered dietitian/nutritionist, may be prevent and improve outcomes.

Evaluation of prognostic risk models for postoperative pulmonary complications in adult patients undergoing major abdominal surgery: a systematic review and international external validation cohort study

BACKGROUND

Stratifying risk of postoperative pulmonary complications after major abdominal surgery allows clinicians to modify risk through targeted interventions and enhanced monitoring. In this study, we aimed to identify and validate prognostic models against a new consensus definition of postoperative pulmonary complications.

METHODS

We did a systematic review and international external validation cohort study. The systematic review was done in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We searched MEDLINE and Embase on March 1, 2020, for articles published in English that reported on risk prediction models for postoperative pulmonary complications following abdominal surgery. External validation of existing models was done within a prospective international cohort study of adult patients (≥18 years) undergoing major abdominal surgery. Data were collected between Jan 1, 2019, and April 30, 2019, in the UK, Ireland, and Australia. Discriminative ability and prognostic accuracy summary statistics were compared between models for the 30-day postoperative pulmonary complication rate as defined by the Standardised Endpoints in Perioperative Medicine Core Outcome Measures in Perioperative and Anaesthetic Care (StEP-COMPAC). Model performance was compared using the area under the receiver operating characteristic curve (AUROCC).

FINDINGS

In total, we identified 2903 records from our literature search; of which, 2514 (86·6%) unique records were screened, 121 (4·8%) of 2514 full texts were assessed for eligibility, and 29 unique prognostic models were identified. Nine (31·0%) of 29 models had score development reported only, 19 (65·5%) had undergone internal validation, and only four (13·8%) had been externally validated. Data to validate six eligible models were collected in the international external validation cohort study. Data from 11 591 patients were available, with an overall postoperative pulmonary complication rate of 7·8% (n=903). None of the six models showed good discrimination (defined as AUROCC ≥0·70) for identifying postoperative pulmonary complications, with the Assess Respiratory Risk in Surgical Patients in Catalonia score showing the best discrimination (AUROCC 0·700 [95% CI 0·683-0·717]).

INTERPRETATION

In the pre-COVID-19 pandemic data, variability in the risk of pulmonary complications (StEP-COMPAC definition) following major abdominal surgery was poorly described by existing prognostication tools. To improve surgical safety during the COVID-19 pandemic recovery and beyond, novel risk stratification tools are required.

FUNDING

British Journal of Surgery Society.

"You can't just eat 16 teaspoons of sugar so why would you drink 16 teaspoons' worth of sugar?": a qualitative study of young adults' reactions to sugary drink warning labels

Background

Several jurisdictions have introduced nutrient warning front of pack (FoP) labels in an effort to curb consumption of ultra-processed foods and beverages high in free sugars (sugars added to foods and beverages, and sugars naturally present in honey, syrups, fruit juices and fruit juice concentrates). This study aimed to explore consumer understanding and perceptions of FoP warning labels that convey different nutritional and health information messages regarding the consumption of sugary drinks.

Methods

Sixteen focus groups were held with 4–8 young adults per group (aged 18–24; n = 105 participants in total) stratified by education level, location (rural centres, large cities) and gender (males, females) to ensure diversity. Labels shown to participants during group discussions included text warning labels of health effects, exercise equivalents, calorie/kilojoule information and sugar content as a “high in” label and as teaspoons (text and pictograms). Thematic analysis was undertaken.

Results

Four themes were identified related to participants’ perceived effectiveness of labels: the extent to which labels were perceived to be useful, relevant and credible; the extent to which a label elicited shock or disgust (perceived aversiveness); the extent to which the label message was resistant to self-exemption; and participants’ perceived potential of the label to reduce purchasing and consumption behaviour. Across all four themes, labels communicating the number of teaspoons of sugar in a sugary drink (whether by text or pictogram) were perceived as the most impactful, resistant to self-exemption and to have the greatest potential to reduce consumption, with enhanced reactions to the pictogram label. Labels depicting health effects, exercise equivalents, calorie/kilojoule information or a general ‘high in sugar’ warning were perceived by consumers to be less effective in one or more themes.

Conclusions

Labels conveying the amount of sugar in a beverage in teaspoons were perceived as highly factual, relatable and interpretable, and as having the greatest potential to impact consumption attitudes and intentions. Further quantitative studies are required to compare the potential effectiveness of the teaspoons of sugar labels in reducing purchasing and consumption behaviour than other alternative warning labels, such as health effects or “high in” sugar labels.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12889-022-13648-1.

AB1397 WORK SMARTER NOT HARDER

Background

In 2014 we were a small team with only 1 WTE (Whole Time Equivalent) CNS (Clinical Nurse Specialist) and 2 WTE consultants for a population of 220,000. Most CNS clinic appointments were taken up for drug counselling. Waiting times were approx. 6 weeks for drug counselling. Consultants would often counsel for DMARDs.

That year at a national meeting a virtual group MDT (multidisciplinary) was presented by the team at Manchester Royal infirmary (MRI). They used a good quality presentation for patients starting bDMARDs as a tool for drug counselling.

After having to put on an extra clinic to counsel 5 patients, all for rituximab, frustratingly I asked why can’t I get them all in the same room to save time? We needed to work smarter, not harder, utilise time & space to ensure best practice but also ensure gold standard, patient centered care continued. We modified the format used at MRI to a face to face group education and counselling of patients to improve waiting times and patient flow.

Objectives

Reduce the amount of clinic appointments used to counsel patients for sDMARDs (synthetic disease modifying anti-rheumatic drugs) and bDMARDs (biologic).

Free up clinic appointments for follow up/ review and flares.

Standardise information given out to ensure they are all given the same gold standard information and education.

Methods

We visited the team at MRI to view the format of their virtual clinic. It didn’t meet the needs of our service so we modified and adapted the presentation.

Set up a group education session to discuss the most common sDMARDs and bDMARDs used for Inflammatory Arthritis.

I developed a power point presentation and booklet that can be used by CNS- ensuring the same information is given to every patient, both attending the group session and those not suitable for group session (ie Language barriers) who would be seen individually. We use a screening proforma to ensure safety of commencement for the individual prior to attending clinics which has a tick list for screening requirements.

The session is undertaken in our education centre. Pre Covid the session could accommodate up to 10 patients per session per week, uptake on average 8-10 patients for sDMARDs and 5-6 for bDMARDs. We alternated biologic and sDMARD sessions, if demand required, we changed a session to accommodate. The room is booked for 1½ hours every week, the sDMARD presentation lasts approximately ½ an hour & bDMARD session 50 minutes, time is allowed for group & individual questions if required at the end. This contrasts with 25 minute appointment for sDMARD & 50 minute for bDMARD counselling 1:1.

The booklet, along with information pack, is given at the group session to all patients. This includes all the information the patient requires (advice line information, blood forms). Prior to the group clinic admin team prepare the patient packs for the CNS to give to patients.

Results

We received 102 anonymous responses back from 136 patients asked. (75% response)

Following these sessions we found less calls to the advice line regarding medication queries, able to add in further cDMARDs or switch to alternate due to S/Es over the telephone

Feedback from patients.-120 comments received.

Clear simple information about a number of possible drugs used to treat my condition not just the 1 I am prescribed. If my medication needs changing I already know about it.

The lecture aspect of the types/contra-indications of meds was very useful & removed the ‘fear’ attached to these specialist drugs.

The session with other patients present stopped me from feeling alone in this position. The booklet is brilliant as it includes everything that was in the session. Also it took away the ‘fear’ of the side effects.

Conclusion

7 years on we feel that Group Counselling has been a huge success, we noticed how successful this was once we had to deal with the pandemic and cancel the group sessions. Patients feedback proves that they like the session and find them valuable. Whilst being beneficial and impoving work productivity and streamling the service.

Acknowledgements

The Rheumatology Team at The Kellgren Centre Manchester Royal Infirmary

Disclosure of Interests

Kelly Tempest Speakers bureau: Abbvie

Sanofi

Galapogos, Hanu Reddy: None declared, Samantha Johns: None declared, Kathryn Wright: None declared, Shabina Sultan Speakers bureau: Amgen, Grant/research support from: lilly

A multi-centre, randomized, double-blind, placebo-controlled clinical trial of the efficacy and safety of chloroquine phosphate, hydroxychloroquine sulphate and lopinavir/ritonavir for the treatment of COVID-19 in Lagos State: study protocol for a randomized controlled trial

Background

The coronavirus disease 2019 (COVID-19) is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that was first identified in Wuhan, Hubei, China, in December 2019. It was recognized as a pandemic by the World Health Organization on 11 March 2020. Outbreak forecasting and mathematical modelling suggest that these numbers will continue to rise. Early identification of effective remedies that can shorten the duration and severity of illness is critical for Lagos State, which is the epi-centre of the disease in Nigeria.

Methods

This is a multi-centre, randomized, double-blind placebo-controlled superiority trial. The study investigates the efficacy of chloroquine phosphate, hydroxychloroquine sulphate and lopinavir/ritonavir added on to standard of care compared to standard of care only in patients with COVID-19 disease. The primary outcome is the clinical status of patients measured using a 7-point ordinal scale at day 15. Research participants and clinicians will be blinded to the allocated intervention. Outcome measures will be directly assessed by clinicians. Statistical analysis will be done by a team blinded to the identity and allocation of research participants. Data analysis will follow intention-to-treat methods, using R software.

Discussion

The current study is of strategic importance for Lagos State in potentially curbing the health, social and economic burden of COVID-19 disease. Should the current study demonstrate that either of the three intervention drugs is more efficacious than standard therapy alone, the State Ministry of Health will develop an evidence-based guideline for the management of COVID-19 in Lagos State. The findings will also be shared nationally and with other states which may lead to a standardized national guideline for the treatment of COVID-19 in Nigeria.

Trial registration

Pan African Clinical Trials Register PACTR202004801273802. Registered prospectively on April 2, 2020

Supplementary Information

The online version contains supplementary material available at 10.1186/s13063-021-05675-x.

Exposure to Anti-Tobacco Messaging and Quit Attempts among Adolescent and Young Adult in Lagos, Nigeria: A Population-based Study

BACKGROUND

Health behavior theories suggest that knowledge about the health risks of the behavior precedes behavior change. Tobacco control messages aim to promote knowledge of health risks associated with tobacco use and encourage smoking cessation behaviors such as quit attempts and intention to quit. This study assessed the relationship between exposure to Anti-Tobacco Messaging (ATM) and quit attempts among adolescents and young adults in Lagos, Nigeria.

METHODS

This was an online cross-sectional survey of 947 participants aged between 15-35 years. The survey obtained sociodemographic information, smoking status, exposure to ATM, intention to quit and quit attempts in the past 12-months. Logistic regression analysis was used to identify the relationship between exposure to ATM and quit attempts; pvalues <0.05 were considered significant. Statistical analysis was done using STATA-15.0 software.

RESULTS

The mean age of respondents was 23.4 years (SD:4.0). Less than one-third of the respondents were smokers (23.4%). The most common source of ATM were digital sources (online and social media - 29.6%). Based on the multivariable logistic regression model, younger age (p:0.03) and an intention to quit (p: <0.001) were significantly associated with a quit attempt. Exposure to ATM in the past 12 months was also significantly associated with higher odds of a quit attempt (OR:5.33; 95% CI: 1.26,22.60; p: 0.02).

CONCLUSION

Our findings suggest an association between exposure to ATM and quit attempts among adolescent and young adult smokers in Lagos State, Nigeria. Policymakers should consider measures aimed at promoting tobacco control education and improving access to smoking cessation services.

A scoping review of systematic reviews on reducing lifestyle risk behaviours in disadvantaged groups

Background

Lifestyle risk behaviours are key risk factors for non-communicable diseases. Some disadvantaged groups face particularly poor health outcomes, which may be exacerbated by high prevalence of risk behaviours. The aim of this scoping review was to identify and bring together evidence from systematic reviews on reducing risk behaviours in these groups and highlight where there is insufficient evidence to inform policy.

Methods

MEDLINE and Embase were searched up to October 2020 for English language reviews, with supplementary searching in Epistemonikos and Health Systems Evidence. Systematic reviews reporting behavioural outcomes of interventions targeting smoking, alcohol use, diet or physical inactivity in nine disadvantaged groups were eligible. Reviews of population-level policies reporting differential effects for these groups and qualitative reviews of barriers or facilitators to change were included. Literature was mapped based on the group and behaviour targeted.

Results

Ninety-two systematic reviews were included. The majority (n = 68) focused on low income or socio-economic status. Fewer reviews were identified that included prisoners (n = 14), deprived areas (n = 12), homeless people (n = 10), people with learning disabilities (n = 9), unemployed people (n = 3) and refugees or asylum seekers (n = 2). We identified no reviews on care leavers or Gypsies, Travellers or Roma. In total only 11 reviews targeted alcohol use. There were some gaps for specific group and behaviour combinations and no intervention reviews on refugees.

Conclusions

A number of gaps were identified, highlighting where new syntheses or primary studies could add value. For example, reviews on interventions in refugees, Gypsies, Travellers and Roma, and care leavers could be useful for policy-making. Other useful contributions might include an overview of the perceptions of disadvantaged groups allowing common barriers to behaviour change to be identified as well as factors unique to specific groups.

Key messages

Nearly 100 systematic reviews focused on reducing risk behaviours in disadvantaged groups; they addressed different combinations of behaviours and groups. Gaps in the literature were identified where new syntheses could make a useful contribution to developing programmes and policies.

OP0102 DECLINE IN EXCESS RISK OF HEART FAILURE IN PATIENTS WITH RHEUMATOID ARTHRITIS IN RECENT YEARS

Background:

Heart failure (HF) is one of the most common cardiovascular conditions in patients with rheumatoid arthritis (RA). Previous studies showed a 2-fold excess risk of HF in RA versus the general population (1). Whether this has changed over time is not known. Longitudinal studies on trends in occurrence of HF in RA patients over time, and studies comparing trends in HF in RA versus the general population are lacking.

Objectives:

1) To assess trends in incidence of HF in patients with incident RA in 1980-2009; and 2) To compare incidence of HF in RA patients and population-based comparators without RA with RA incidence/ index date in 1980-2009.

Methods:

The study population comprised Olmsted County, Minnesota residents with incident RA (age ≥18 years, 1987 ACR criteria met in 1980-2009) and non-RA subjects from the same underlying population with similar age, sex and calendar year of index. All subjects were followed until death, migration, or 04/30/2019. Incident HF was defined using Framingham criteria. Patients with HF prior to RA incidence/index date were excluded. Cox proportional hazards models were used to compare incident HF events by decade, adjusting for age, sex and cardiovascular risk factors: smoking, obesity, diabetes mellitus, hypertension, dyslipidemia. Cumulative incidence of HF adjusted for death was also computed.

Results:

The study included 905 patients with RA (mean age 55.9 years; 69% female; median follow-up 13.4 years). The 10-year cumulative incidence of HF in RA cohort in the 1980s was 8.5% (95%CI 5.3-13.6%), 1990s was 10.8% (95%CI 7.7-15.1%), and 2000s was 7.1% (95%CI 4.9-10.3%). There was no difference in incidence of HF in 1990s (hazard ratio [HR] 0.91, 95% Confidence Interval [CI] 0.62-1.35) and 2000s (HR 0.73; 95%CI 0.46-1.18) compared to 1980s. Patients with incident RA were then compared to 903 individuals without RA (mean age 56.0 years; 69% female; median follow-up 13.8 years). The 10-year cumulative incidence of HF in these individuals in the 1980s was 7.4% (95%CI 4.5-12.3%), 1990s was 7.5% (95%CI 4.9-11.3%), and 2000s was 7.3% (95%CI 5.0-10.7%). Similar to RA, there was no statistically significant difference in incidence of HF in 1990s (HR 0.96, 95%CI 0.60-1.51) and 2000s (HR 0.75, 95%CI 0.44-1.30) compared to the 1980s. When comparing the risk of HF in RA and non-RA subjects, patients with RA in 2000s had no excess in HF risk as compared to the general population (HR 1.14, 95%CI 0.73-1.78, Figure 1). This is in contrast to the 2-fold excess risk of HF in patients with RA in 1980s (HR 2.20, 95%CI 1.44-3.34) and ~1.5-fold increase in risk of HF in 1990s (HR 1.54, 95%CI 1.04-2.29).

Figure 1.

Cumulative incidence of any HF event in RA and non-RA patients by decade of RA incidence/index

Conclusion:

We found a reduction in excess HF risk in patients with RA compared to individuals without RA in 2000s compared to 1980s. There were no statistically significant changes in incidence of HF in patients with RA and in individuals without RA over time. More studies are needed to understand the reasons and implications of these trends.

References:

[1]Nicola PJ, et al. The risk of congestive heart failure in rheumatoid arthritis: a population-based study over 46 years. Arthritis Rheum 2005;52:412–20.

Acknowledgements:

This work was supported by a grant from the National Institutes of Health, NIAMS (R01 AR46849) and NHLBI (HL120859). Research reported in this publication was supported by the National Institute of Aging of the National Institutes of Health under Award Number R01AG034676. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.

Disclosure of Interests:

Elena Myasoedova: None declared, John M Davis III Grant/research support from: Pfizer, Sara Achenbach: None declared, Kerry Wright: None declared, Reto Kurmann: None declared, Rekha Mankad: None declared, Veronique Roger: None declared, Cynthia S. Crowson: None declared

Concomitant botanical medicine use among patients participating in commercial prostate cancer trials

OBJECTIVES

Patients with cancer frequently use botanical medications. The concomitant use of such medications by patients on commercial trials has not been well-described, despite the importance of these trials for evaluating the safety and efficacy of new agents. We sought to describe the use of botanical medications taken by patients with prostate cancer enrolled on global commercial trials.

DESIGN

Retrospective study.

SETTING

Regulatory repository of commercial clinical trial data.

INTERVENTIONS

Anti-cancer therapy.

MAIN OUTCOME MEASURES

Botanical and medication use data were pooled across six international commercial randomized trials for metastatic prostate cancer with detailed information on medication and indications. Botanical products were considered to have potential for drug interaction if they led to a change in drug exposure in human trials. Potential for interaction was ascertained by PubMed review. Descriptive statistics were used for analysis.

RESULTS

Of 7318 enrolled patients, 700 (10 %) reported botanical use at any time and 653 (9%) reported use of botanical products while on trial. Nearly half of botanical product types were not classified by plant (43 %). The highest proportion of botanical use was among patients in Asian countries (32 %), followed by patients in North America (13 %). Eighty-six different types of botanical products were used; of these, nineteen had a patient-reported anti-cancer indication.

CONCLUSIONS

Botanical medicine use among patients with prostate cancer in commercial trials is moderate, although it varies by region. Practitioners should be aware of the use of botanical interventions in a clinical trial context.

Correction to Effect of vitamin K on bone mineral density and fractures in adults: an updated systematic review and meta-analysis of randomised controlled trials

Following the work of Avenell et al. that has raised concerns about the integrity of the Yamaguchi Osteoporosis Prevention Study (YOPS) conducted by Ishida and Kawai we issue here an adjustment to all meta-analysis estimates that contained this work within our systematic review.

Phenotypic plasticity of circadian entrainment under a range of light conditions

The response to a zeitgeber, particularly the light/dark cycle, may vary phenotypically. Phenotypic plasticity can be defined as the ability of one genome to express different phenotypes in response to environmental variation. In this opinion paper, we present some evidence that one of the most prominent effects of the introduction of electric light to the everyday life of humans is a significant increase in phenotypic plasticity and differences in interindividual phases of entrainment. We propose that the healthy limits of phenotypic plasticity have been surpassed in contemporary society.

•

Electric light increased phenotypic plasticity in humans and differences in interindividual phases of entrainment.

•

Healthy limits of phenotypic plasticity have been surpassed in contemporary society.

•

The correlation between biological time (DLMO) and behavioral time (MSFsc) is reduced in the population without access to electrical light.

SAT0404 INCIDENCE OF PSORIATIC ARTHRITIS FROM 2000-2017: A POPULATION-BASED STUDY

Background:

Psoriatic arthritis (PsA) is a chronic inflammatory musculoskeletal disease with an estimated prevalence of 0.05% to 0.25% in the population and 6% to 41% in psoriasis patients. There is disparity in the reported incidence patterns in the general population in more recent years, with increasing incidence seen in Denmark, but relatively stable rates seen in Canada. However, no studies in the US have looked at the recent incidence patterns, and it would be important to see how newer therapies for psoriasis have impacted the incidence of PsA. Variability in the estimates of incidence and prevalence across different studies has been attributed to differences in case ascertainment and most studies have used ICD codes to identify PsA patients.

Objectives:

To determine the annual incidence of PsA (2000-17) and compare it to incidence of PsA in previous years (1970-1999)1in the Olmsted County, Minnesota, USA population.

Methods:

A retrospective, population-based cohort of PsA patients ≥18 years of age from Olmsted County, MN meeting ClASsification of Psoriatic ARthritis (CASPAR) criteria for PsA (2000-17) was identified from the Rochester Epidemiology Project (REP). REP ensures virtually complete ascertainment and follow-up of all clinically diagnosed cases of PsA in a geographically-defined area. The date of fulfillment of CASPAR criteria was taken as the PsA incidence date. Age- and sex-specific incidence rates, adjusted to 2010 US white population, were reported. Our previously reported cohort from REP (1970-1999)1also used the same CASPAR criteria, and trends from the current study were compared to the previous years.

Results:

There were 170 incident cases of PsA, with a mean age of 46.7 (SD=12.3) years and 47% females from 2000-17. The overall age and sex adjusted annual incidence of PsA per 100,000 population was 8.8 (95% CI 7.5-10.1), and higher in males (9.7, 95% CI 7.7-11.7) than females (8.0, 95% CI 6.2-9.8). Overall incidence was highest in the age range 40-59 years (Table 1). The incidence rate was relatively stable in the recent years 2000-2017 compared to 1970-19991where a rise in incidence was observed (3.6 to 9.8 per 100,000 persons from 1970-79 to 1990-99, p<0.001) (Figure 1).

Table 1.

Annual incidence rate, IR (per 100,000) of psoriatic arthritis by age and sex between 2000-17 in Olmsted County, MN.

MaleFemaleTotalAge Group, yrsNIRNIRNRate18-2994.141.6132.830-392413.4147.33810.240-492413.92614.05014.050-592113.52816.24914.960-6976.987.1157.070-7935.000.032.280+26.000.022.2Total (95% CI)909.7 (7.7-11.7)†808.0 (6.2-9.8)†1708.8 (7.5-10.1)††

† Age-adjusted to the 2010 US White population. †† Age- and sex-adjusted to the 2010 US White population

Conclusion:

In the Olmsted County population, the increasing PsA incidence seen in previous years 1970-19991seems to have leveled off after 2000. This is in contrast to increasing incidence in recent years reported from Denmark, Taiwan and Israel. However, similar to our study, incidence rates for PsA from 2008-2015 were reported to be stable in Canada.

References:

[1]Wilson FC, Icen M, Crowson CS, McEvoy MT, Gabriel SE, Kremers HM. Time trends in epidemiology and characteristics of psoriatic arthritis over 3 decades: a population-based study.J Rheumatol. 2009;36(2):361-367.

Acknowledgments:

This project was supported by CTSA Grant Number UL1 TR002377 from the National Center for Advancing Translational Science (NCATS).

Disclosure of Interests:

Paras Karmacharya: None declared, Cynthia S. Crowson Grant/research support from: Pfizer research grant, Delamo Bekele: None declared, Sara Achenbach: None declared, John M Davis III Grant/research support from: Research grants from Pfizer, Consultant of: Served on advisory boards for Abbvie and Sanofi-Genzyme, Alexis Ogdie Grant/research support from: Pfizer, Novartis, Consultant of: Abbvie, Amgen, BMS, Celgene, Corrona, Janssen, Lilly, Pfizer, Novartis, Ali Duarte-Garcia: None declared, Hilal Maradit-Kremers: None declared, Megha Tollefson: None declared, Floranne C. Ernste: None declared, Kerry Wright: None declared

0056 Identification of a Stable Human Metabolomics-Based Biomarker of Insufficient Sleep and its Association with Cognitive Performance

Introduction

There are numerous potential benefits of developing objective biomarkers of insufficient sleep including providing screening and diagnostic tools, increasing our understanding of poor sleep health, and supporting sleep-based countermeasures. We analyzed plasma metabolites in humans during two separate occasions of experimental sleep restriction to identify stable biomarkers of insufficient sleep, and assessed the association of these biomarkers with cognitive performance.

Methods

12 healthy adults (6M/6F), aged 24±5y (mean±SD), completed two 18-day protocols separated by 10 days. For each 18-day protocol, participants maintained habitual 9h sleep schedules for two weeks at home, and then completed 4-day laboratory visits with sleep opportunities of: 9h on night 1, 5h on nights 2 and 3, and recovery sleep on night 4. Energy balanced diets were provided 2 days before and throughout laboratory visits. Blood was collected every 2h during scheduled wakefulness on days 1–2 (baseline) and days 3–4 (insufficient sleep), and was analyzed by untargeted liquid chromatography/mass-spectrometry. Sustained attention was assessed every 2 h during scheduled wakefulness with the Psychomotor Vigilance Test (PVT).

Results

After filtering, we detected 6,822 metabolites. Elastic-net regression identified 21 metabolites consistently altered by insufficient sleep in both 18-day protocols. We developed a logistic regression-based biomarker fingerprint of insufficient sleep using 11 of these 21 metabolites with consistent responses to insufficient sleep. This biomarker fingerprint has 74.4% accuracy and 0.822 (0.782–0.858; 95%CI) area under the receiver operator curve. Median reaction time was slower (P&lt;0.05) during insufficient sleep versus baseline. Mediation analyses show our biomarker fingerprint accounts for ~6% of the slower reaction time.

Conclusion

We identified a plasma metabolomics-based biomarker of insufficient sleep with “good” performance. However, this biomarker only accounts for ~6% of reduced PVT performance during insufficient sleep. Our findings suggest that specific biomarkers for insufficient sleep versus cognitive deficits associated with insufficient sleep may be required.

Support

This work was supported by NIH R01HL132150, NIH K01HL145099, NIH F32DK111161, NIH/NCATS Colorado CTSA Grant UL1TR002535, Sleep Research Society Foundation 011-JP-16, and the University of Colorado Boulder Undergraduate Research Opportunities Grant.

Benchmarking an 11-qubit quantum computer

The field of quantum computing has grown from concept to demonstration devices over the past 20 years. Universal quantum computing offers efficiency in approaching problems of scientific and commercial interest, such as factoring large numbers, searching databases, simulating intractable models from quantum physics, and optimizing complex cost functions. Here, we present an 11-qubit fully-connected, programmable quantum computer in a trapped ion system composed of 13 ¹⁷¹Yb⁺ ions. We demonstrate average single-qubit gate fidelities of 99.5\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\%$$\end{document}%, average two-qubit-gate fidelities of 97.5\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\%$$\end{document}%, and SPAM errors of 0.7\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\%$$\end{document}%. To illustrate the capabilities of this universal platform and provide a basis for comparison with similarly-sized devices, we compile the Bernstein-Vazirani and Hidden Shift algorithms into our native gates and execute them on the hardware with average success rates of 78\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\%$$\end{document}% and 35\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\%$$\end{document}%, respectively. These algorithms serve as excellent benchmarks for any type of quantum hardware, and show that our system outperforms all other currently available hardware.

The growing complexity of quantum computing devices makes presents challenges for benchmarking their performance as previous, exhaustive approaches become infeasible. Here the authors characterise the quality of their 11-qubit device by successfully computing two quantum algorithms.

Effect of vitamin K on bone mineral density and fractures in adults: an updated systematic review and meta-analysis of randomised controlled trials

Vitamin K may affect bone mineral density and fracture incidence. Since publication of a previous systematic review the integrity of some of the previous evidence has been questioned and further trials have been published. Therefore an update to the systematic review was required.

INTRODUCTION

This systematic review was designed to assess the effectiveness of oral vitamin K supplementation for increasing bone mineral density and reducing fractures in adults.

METHODS

MEDLINE, EMBASE, CENTRAL, CINAHL, clinicaltrials.gov, and WHO-ICTRP were searched for eligible trials. Randomised controlled trials assessing oral vitamin K supplementation that assessed bone mineral density or fractures in adult populations were included. A total of 36 studies were identified. Two independent reviewers extracted data using a piloted extraction form.

RESULTS

For post-menopausal or osteoporotic patients, meta-analysis showed that the odds of any clinical fracture were lower for vitamin K compared to controls (OR, 0.72, 95%CI 0.55 to 0.95). Restricting the analysis to low risk of bias trials reduced the OR to 0.76 (95%CI, 0.58 to 1.01). There was no difference in vertebral fractures between the groups (OR 0.96, 95%CI 0.83 to 1.11). In the bone mineral density meta-analysis, percentage change from baseline at the lumbar spine was higher at 1 year (MD 0.93, 95%, CI - 0.02 to 1.89) and 2 years (MD 1.63%, 95%CI 0.10 to 3.16) for vitamin K compared to controls; however, removing trials at high risk of bias tended to result in smaller differences that were not statistically significant. At 6 months, it was higher in the hip (MD 0.42%, 95%CI 0.01 to 0.83) and femur (MD 0.29%, 95%CI 0.17 to 0.42). There was no significant difference at other anatomical sites.

CONCLUSIONS

For post-menopausal or osteoporotic patients, there is no evidence that vitamin K affects bone mineral density or vertebral fractures; it may reduce clinical fractures; however, the evidence is insufficient to confirm this. There are too few trials to draw conclusions for other patient groups.

Implementation and evaluation of nationwide scale-up of the Surgical Safety Checklist

Background

The WHO Surgical Safety Checklist improves surgical outcomes, but evidence and theoretical frameworks for successful implementation in low‐income countries remain lacking. Based on previous research in Madagascar, a nationwide checklist implementation in Benin was designed and evaluated longitudinally.

Methods

This study had a longitudinal embedded mixed‐methods design. The well validated Consolidated Framework for Implementation Research (CFIR) was used to structure the approach and evaluate the implementation. Thirty‐six hospitals received 3‐day multidisciplinary training and 4‐month follow‐up. Seventeen hospitals were sampled purposively for evaluation at 12–18 months. The primary outcome was sustainability of checklist use at 12–18 months measured by questionnaire. Secondary outcomes were CFIR‐derived implementation outcomes, measured using the WHO Behaviourally Anchored Rating Scale (WHOBARS), safety questionnaires and focus groups.

Results

At 12–18 months, 86·0 per cent of participants (86 of 100) reported checklist use compared with 31·1 per cent (169 of 543) before training and 88·8 per cent (158 of 178) at 4 months. There was high‐fidelity use (median WHOBARS score 5·0 of 7; use of basic safety processes ranged from 85·0 to 99·0 per cent), and high penetration shown by a significant improvement in hospital safety culture (adapted Human Factors Attitude Questionnaire scores of 76·7, 81·1 and 82·2 per cent before, and at 4 and 12–18 months after training respectively; P < 0·001). Acceptability, adoption, appropriateness and feasibility scored 9·6–9·8 of 10. This approach incorporated 31 of 36 CFIR implementation constructs successfully.

Conclusion

This study shows successfully sustained nationwide checklist implementation using a validated implementation framework.

Implementation works

Interventional management of hyperhidrosis in secondary care: a systematic review

BACKGROUND

Hyperhidrosis is uncontrollable excessive sweating, which occurs at rest, regardless of temperature. The symptoms of hyperhidrosis can significantly affect quality of life.

OBJECTIVES

To undertake a systematic review of the clinical effectiveness and safety of treatments available in secondary care for the management of primary hyperhidrosis.

METHODS

Fifteen databases (including trial registers) were searched to July 2016 to identify studies of secondary-care treatments for primary hyperhidrosis. For each intervention randomized controlled trials (RCTs) were included where available; where RCT evidence was lacking, nonrandomized trials or large prospective case series were included. Outcomes of interest included disease severity, sweat rate, quality of life, patient satisfaction and adverse events. Trial quality was assessed using a modified version of the Cochrane Risk of Bias tool. Results were pooled in pairwise meta-analyses where appropriate, otherwise a narrative synthesis was presented.

RESULTS

Fifty studies were included in the review: 32 RCTs, 17 nonrandomized trials and one case series. The studies varied in terms of population, intervention and methods of outcome assessment. Most studies were small, at high risk of bias and poorly reported. The interventions assessed were iontophoresis, botulinum toxin (BTX) injections, anticholinergic medications, curettage and newer energy-based technologies that damage the sweat gland.

CONCLUSIONS

The evidence for the effectiveness and safety of treatments for primary hyperhidrosis is limited overall, and few firm conclusions can be drawn. However, there is moderate-quality evidence to support the use of BTX for axillary hyperhidrosis. A trial comparing BTX with iontophoresis for palmar hyperhidrosis is warranted.

Importance of tau in cognitive decline as revealed by developmental exposure to lead

Previous reports by us have determined that developmental exposure to the heavy metal lead (Pb) resulted in cognitive impairment in aging wildtype mice, and a latent induction in biomarkers associated with both the tau and amyloid pathways. However, the relationship between these two pathways and their correlation to cognitive performance needs to be scrutinized. Here, we investigated the impact of developmental Pb (0.2%) exposure on the amyloid and tau pathways in a transgenic mouse model lacking the tau gene. Cognitive function, and levels of intermediates in the amyloid and tau pathways following postnatal Pb exposure were assessed on young adult and mature transgenic mice. No significant difference in behavioral performance, amyloid precursor protein (APP), or amyloid beta (Aβ) levels was observed in transgenic mice exposed to Pb. Regulators of the tau pathway were impacted by the absence of tau, but no additional change was imparted by Pb exposure. These results revealed that developmental Pb exposure does not cause cognitive decline or change the expression of the amyloid pathway in the absence of tau. The essentiality of tau to mediate cognitive decline by environmental perturbations needs further investigation.

A multicentre study of long-term follow-up and owner satisfaction following enucleation in horses

BACKGROUND

Horses are reported to return to a variety of disciplines following unilateral enucleation; however, owners of horses with ocular disease are frequently reluctant to consider the procedure. There is little published information investigating owners' attitudes towards, and satisfaction following, enucleation.

OBJECTIVES

To investigate the hypotheses: 1) horses return to their previous level of work following unilateral enucleation and 2) their owners are satisfied with the post-operative outcome.

STUDY DESIGN

Retrospective case series with cross-sectional survey.

METHODS

Clinical records from eight equine referral centres in the United Kingdom were reviewed to identify horses that underwent enucleation between August 2006 and March 2015. Owner questionnaires were completed to corroborate information provided by medical records and obtain information on client perceptions.

RESULTS

A total of 170 cases were identified and 119 owner questionnaires completed. The most frequent primary uses of horses in the study were pleasure/leisure riding, showjumping and dressage, with 25.2% (n = 30) of horses used for competition. Following enucleation, 77.3% (n = 92) of horses were performing at an equivalent or higher level than prior to enucleation and 60.0% (n = 18/30) of competition horses were competing at an equivalent or higher level. Complications related to the surgical site (predominantly mild post-operative swelling) were reported in 3.7% of cases and nonocular complications in 3.7% of cases. Of owners who reported being concerned or very concerned about certain factors prior to surgery, ≥86.8% reported that these factors caused little or no issue post-surgery. Most owners, 90.8% (n = 108) were pleased with the outcome following surgery, with 21.3% (n = 23/108) wishing the procedure had been undertaken sooner.

MAIN LIMITATIONS

Retrospective data collection from clinical records and the potential for recall bias.

CONCLUSIONS

Horses can return successfully to a variety of disciplines following enucleation. Owners are satisfied with the outcome and pleased that enucleation was performed.