Neighbourhood deprivation monitoring in Rotterdam and London: exploring barriers to evidence-based policy and practice

There is ample evidence that area-based approaches to tackling health inequalities, as part of a wider policy of community regeneration, are effective. Nevertheless, embedding this evidence in the routine practice of health professionals has not followed automatically. One of the barriers to the uptake of research is the process by which evidence is generated and its usability, or “stickiness”. This paper draws on the concept of stickiness to explore the role of deprivation monitoring data in creating an evidence base for neighbourhood health policies and intervention. The study was undertaken as part of a Knowledge Exchange Programme aimed at sharing learning to improve the participation and health of disadvantaged people in deprived neighbourhoods in Rotterdam and London. The two cities are similar in that they both have highly diverse populations and government health and social policies that employ area-based approaches to tackle deprivation. Documentary analysis and in-depth interviews with health professionals and policymakers in the two cities have explored the construction of health policy, the congruence between data on deprivation and the contextual experience of practitioners, and the factors that influenced the usability of the data

Non-adjacent dependency learning in humans and other animals

International audienc

Deposition Bias of Chromatin Proteins Inverts under DNA Replication Stress Conditions

Following DNA replication, equal amounts of chromatin proteins are distributed over sister chromatids by re-deposition of parental chromatin proteins and deposition of newly synthesized chromatin proteins. Molecular mechanisms balancing the allocation of new and old chromatin proteins remain largely unknown. Here, we studied the genome-wide distribution of new chromatin proteins relative to parental DNA template strands and replication initiation zones using the double-click-seq. Under control conditions, new chromatin proteins were preferentially found on DNA replicated by the lagging strand machinery. Strikingly, replication stress induced by hydroxyurea or curaxin treatment and inhibition of ataxia telangiectasia and Rad3-related protein (ATR) or p53 inactivation inverted the observed chromatin protein deposition bias to the strand replicated by the leading strand polymerase in line with previously reported effects on replication protein A occupancy. We propose that asymmetric deposition of replication protein occupancy. propose asymmetric deposition newly synthesized chromatin proteins onto sister chromatids reflects differences in the processivity of leading and lagging strand synthesis

Post-infectious headache: a reactive headache?

Post-infectious disease syndrome includes both neurological and non-neurological disorders. However, headache as an isolated or a presenting complaint of post-infectious illness has not been well acknowledged in the literature. In this retrospective observation, patients having daily headache of more than 1 week and <4 weeks duration were included. We divided this group into patients having headache with preceding history of febrile illness in the recent past and patients without such history of febrile illness. We compared clinical features and therapeutic responses of various drugs between the groups. There were no significant differences in demographic features in these groups. However, associated neck pain, nausea, photophobia and meningeal signs were more prevalent in patients having history of preceding infection. A relatively lower proportion of subjects showed complete response to drugs at 3 months in post-infectious group. Good responses were noted to steroids in post-infectious group. In conclusion, a subset of patients with daily headache may be because of post-infectious pathology and treatment in the early stage may prevent it from becoming chronic. Large prospective studies are required to confirm these observations

Room for improvement in non-pharmacological systemic sclerosis care?-a cross-sectional online survey of 650 patients

Background/ objective: To gain insight in the use of current systemic sclerosis (SSc) care provided by health professionals from the patient perspective. We focused on referral reasons, treatment goals, the alignment with unmet care needs, and outcome satisfaction. Methods: Dutch SSc patients from 13 participating rheumatology departments were invited to complete an online survey. Descriptive statistics were used to describe current use of non-pharmacological care and outcome satisfaction. Reasons for referral and treatment goals were encoded in International Classification of Function and Disability (ICF) terms. Results: We included 650 patients (mean (standard deviation [SD]) age, 59.4 (11.4) years. 50% had contact with a health professional in the past year; 76.3% since disease onset. Physiotherapists were the most frequently visited in the past year (40.0%), followed by dental hygienists (11.4%) and podiatrists (9.2%). The three most common referral reasons were pain, joint mobility and cardiovascular functions. Fatigue, Raynaud's phenomenon, physical limitations, reduced hand function and joint problems were mentioned by more than 25% of all respondents as unmet needs. The proportion of patients treated in the past year by a health professional who were satisfied with knowledge and expertise of their health professionals was 74.4%; 73% reported improved daily activities and better coping with complaints. However, 48.9% perceived that the collaboration between rheumatologist and health professional was never or only sometimes sufficient. Conclusion: Despite the high outcome satisfaction and good accessibility of health professionals, there are obstacles in the access to non-pharmacological care and communication barriers between health professionals and rheumatologists

Oral biofilm models for mechanical plaque removal

In vitro plaque removal studies require biofilm models that resemble in vivo dental plaque. Here, we compare contact and non-contact removal of single and dual-species biofilms as well as of biofilms grown from human whole saliva in vitro using different biofilm models. Bacteria were adhered to a salivary pellicle for 2 h or grown after adhesion for 16 h, after which, their removal was evaluated. In a contact mode, no differences were observed between the manual, rotating, or sonic brushing; and removal was on average 39%, 84%, and 95% for Streptococcus mutans, Streptococcus oralis, and Actinomyces naeslundii, respectively, and 90% and 54% for the dual- and multi-species biofilms, respectively. However, in a non-contact mode, rotating and sonic brushes still removed considerable numbers of bacteria (24–40%), while the manual brush as a control (5–11%) did not. Single A. naeslundii and dual-species (A. naeslundii and S. oralis) biofilms were more difficult to remove after 16 h growth than after 2 h adhesion (on average, 62% and 93% for 16- and 2-h-old biofilms, respectively), while in contrast, biofilms grown from whole saliva were easier to remove (97% after 16 h and 54% after 2 h of growth). Considering the strong adhesion of dual-species biofilms and their easier more reproducible growth compared with biofilms grown from whole saliva, dual-species biofilms of A. naeslundii and S. oralis are suggested to be preferred for use in mechanical plaque removal studies in vitro

The Prospective Dutch Colorectal Cancer (PLCRC) cohort: real-world data facilitating research and clinical care

Real-world data (RWD) sources are important to advance clinical oncology research and evaluate treatments in daily practice. Since 2013, the Prospective Dutch Colorectal Cancer (PLCRC) cohort, linked to the Netherlands Cancer Registry, serves as an infrastructure for scientific research collecting additional patient-reported outcomes (PRO) and biospecimens. Here we report on cohort developments and investigate to what extent PLCRC reflects the “real-world”. Clinical and demographic characteristics of PLCRC participants were compared with the general Dutch CRC population (n = 74,692, Dutch-ref). To study representativeness, standardized differences between PLCRC and Dutch-ref were calculated, and logistic regression models were evaluated on their ability to distinguish cohort participants from the Dutch-ref (AU-ROC 0.5 = preferred, implying participation independent of patient characteristics). Stratified analyses by stage and time-period (2013–2016 and 2017–Aug 2019) were performed to study the evolution towards RWD. In August 2019, 5744 patients were enrolled. Enrollment increased steeply, from 129 participants (1 hospital) in 2013 to 2136 (50 of 75 Dutch hospitals) in 2018. Low AU-ROC (0.65, 95% CI: 0.64–0.65) indicates limited ability to distinguish cohort participants from the Dutch-ref. Characteristics that remained imbalanced in the period 2017–Aug’19 compared with the Dutch-ref were age (65.0 years in PLCRC, 69.3 in the Dutch-ref) and tumor stage (40% stage-III in PLCRC, 30% in the Dutch-ref). PLCRC approaches to represent the Dutch CRC population and will ultimately meet the current demand for high-quality RWD. Efforts are ongoing to improve multidisciplinary recruitment which will further enhance PLCRC’s representativeness and its contribution to a learning healthcare system

Assessment of Stress Corrosion Cracking Behavior of Additively Processed Al-Mg-Sc-Zr Alloy

Additively manufactured (AM) structures provide significant advantages in terms of lightweight engineering potentials, using methods like topology optimization or the integration of lattice structures. Applications in automotive, aerospace and space therefore require high-strength aluminum alloys, for which structural 2xxx, 5xxx, 6xxx or 7xxx alloys are ap-plied. Scalmalloy is a newer Sc- and Zr- modified hardenable high-strength Al-Mg alloy, offering very good mechanical properties. However, from an industrial perspective not only the mechanical properties are of importance, since struc-tural parts are also exposed to chloride environmental conditions, leading to corrosion effects. It is therefore mandatory to characterize the corrosion behavior. In this respect the corrosion behavior of additively processed Al-alloys have so far mostly been characterized for AlSi10Mg alloys using electrochemical potential analysis methods, while the experi-mental testing of stress corrosion properties has not been reported. The study analyzed the stress corrosion cracking susceptibility of a Al-Mg-Sc-Zr alloy processed by Selective Laser Melting. The results indicate that the AM-processed Al-Mg-Sc-Zr alloy shows at least moderate stress corrosion resistance according to the ECSS-standard, even though the mi-crostructural situation in such welded materials is different to conventionally processed materials