Prevalence of Dermatitis Herpetiformis Within the iCureCeliac Patient-Powered Research Network-Patient Characteristics and Dietary Counseling.
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ABSTRACT:
SUBMITTER: Shields BE
PROVIDER: S-EPMC7542518 | biostudies-literature |
REPOSITORIES: biostudies-literature
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Project description:Dermatitis herpetiformis (DH) is an autoimmune blistering skin disease associated with gluten-sensitive enteropathy (CD). In order to investigate the pathogenesis of skin lesions at molecular level, we analysed the gene expression profiles in skin biopsies from 6 CD patients with DH and 6 healthy controls using Affymetrix HG-U133A 2.0 arrays. 486 genes were differentially expressed in DH skin compared to normal skin: 225 were upregulated and 261 were downregulated. Consistently with the autoimmune origin of DH, functional classification of the differentially expressed genes (DEGs) indicates a B- and T-cell immune response (LAG3, TRAF5, DPP4, and NT5E). In addition, gene modulation provides evidence for a local inflammatory response (IL8, PTGFR, FSTL1, IFI16, BDKRD2, and NAMPT) with concomitant leukocyte recruitment (CCL5, ENPP2), endothelial cell activation, and neutrophil extravasation (SELL, SELE). DEGs also indicate overproduction of matrix proteases (MMP9, ADAM9, and ADAM19) and proteolytic enzymes (CTSG, ELA2, CPA3, TPSB2, and CMA1) that may contribute to epidermal splitting and blister formation. Finally, we observed modulation of genes involved in cell growth inhibition (CGREF1, PA2G4, and PPP2R1B), increased apoptosis (FAS, TNFSF10, and BASP1), and reduced adhesion at the dermal epidermal junction (PLEC1, ITGB4, and LAMA5). In conclusion, our results identify genes that are involved in the pathogenesis of DH skin lesions.
| S-EPMC3443590 | biostudies-literature
Project description:Dermatitis herpetiformis (DH) is a cutaneous manifestation of coeliac disease. Increased bone fracture risk is known to associate with coeliac disease, but this has been only scantly studied in DH. In this study, self-reported fractures and fracture-associated factors in DH were investigated and compared to coeliac disease. Altogether, 222 DH patients and 129 coeliac disease-suffering controls were enrolled in this study. The Disease Related Questionnaire and the Gastrointestinal Symptom Rating Scale and Psychological General Well-Being questionnaires were mailed to participants; 45 out of 222 (20%) DH patients and 35 out of 129 (27%) of the coeliac disease controls had experienced at least one fracture (p = 0.140). The cumulative lifetime fracture incidence did not differ between DH and coeliac disease patients, but the cumulative incidence of fractures after diagnosis was statistically significantly higher in females with coeliac disease compared to females with DH. The DH patients and the coeliac disease controls with fractures reported more severe reflux symptoms compared to those without, and they also more frequently used proton-pump inhibitor medication. To conclude, the self-reported lifetime bone fracture risk is equal for DH and coeliac disease. After diagnosis, females with coeliac disease have a higher fracture risk than females with DH.
| S-EPMC5872769 | biostudies-literature
Project description:The Patient-Centered Outcomes Research Institute (PCORI) recently launched PCORnet to establish a single inter-operable multicenter data research network that will support observational research and randomized clinical trials. This paper provides an overview of the patient-powered research networks (PPRNs), networks of patient organizations focused on a particular health condition that are interested in sharing health information and engaging in research. PPRNs will build on their foundation of trust within the patient communities and draw on their expertise, working with participants to identify true patient-centered outcomes and direct a patient-centered research agenda. The PPRNs will overcome common challenges including enrolling a diverse and representative patient population; engaging patients in governance; designing the data infrastructure; sharing data securely while protecting privacy; prioritizing research questions; scaling small networks into a larger network; and identifying pathways to sustainability. PCORnet will be the first distributed research network to bring PCOR to national scale.
| S-EPMC4078295 | biostudies-literature
Project description:Few studies have quantified the incidence and prevalence of celiac disease (CD) and dermatitis herpetiformis (DH) nationally and regionally by time and age groups. Understanding this epidemiology is crucial for hypothesizing about causes and quantifying the burden of disease.Patients with CD or DH were identified in the Clinical Practice Research Datalink between 1990 and 2011. Incidence rates and prevalence were calculated by age, sex, year, and region of residence. Incidence rate ratios (IRR) adjusted for age, sex, and region were calculated with Poisson regression.A total of 9,087 incident cases of CD and 809 incident cases of DH were identified. Between 1990 and 2011, the incidence rate of CD increased from 5.2 per 100,000 (95% confidence interval (CI), 3.8-6.8) to 19.1 per 100,000 person-years (95% CI, 17.8-20.5; IRR, 3.6; 95% CI, 2.7-4.8). The incidence of DH decreased over the same time period from 1.8 per 100,000 to 0.8 per 100,000 person-years (average annual IRR, 0.96; 95% CI, 0.94-0.97). The absolute incidence of CD per 100,000 person-years ranged from 22.3 in Northern Ireland to 10 in London. There were large regional variations in prevalence for CD but not DH.We found a fourfold increase in the incidence of CD in the United Kingdom over 22 years, with large regional variations in prevalence. This contrasted with a 4% annual decrease in the incidence of DH, with minimal regional variations in prevalence. These contrasts could reflect differences in diagnosis between CD (serological diagnosis and case finding) and DH (symptomatic presentation) or the possibility that diagnosing and treating CD prevents the development of DH.
| S-EPMC4012300 | biostudies-other
Project description:BackgroundTo build a Patient-Powered Research Networks (PPRN) that prioritizes the needs of its members who have inflammatory bowel diseases (IBD), we sought to better understand patients' preferences for what are the essential features that will facilitate and sustain engagement.MethodsWe conducted a two-phase qualitative study. Seven focus groups involving 62 participants with IBD were conducted (phase 1). Focus group results informed the phase 2 cognitive interviews, which included 13 phone interviews. Topics included experiences with IBD and research, PPRN engagement, patient-generated health data, and resources/tools to facilitate self-management. All focus groups and interviews were digitally recorded, transcribed verbatim, and analyzed in ATLAS.ti 7.5. Thematic categories were derived from the data, and codes were grouped into emergent themes and relationships.ResultsFour major themes emerged through inductive coding: (1) the impact of knowing; (2) participation barriers and challenges; (3) engagement and collaboration; and (4) customizable patient portal features/functionalities. Participants were motivated to participate in the PPRN because the knowledge gained from research studies would benefit both society and the individual. Main concerns included credibility of online resources, pharmaceutical industry profiting from their data, data security, and participation expectations. Participants wanted a true and equal partnership in every phase of building a PPRN. Participants felt it was important to have access to personal health records and be able to track health status and symptoms.ConclusionPartnering with participants throughout PPRN development was critical to understanding the needs and preferences of patients with IBDs and for shaping engagement strategies and the portal's design.
| S-EPMC6143211 | biostudies-literature
Project description:BackgroundPatient-Powered Research Networks (PPRNs) are a unique type of patient-powered patient registry for patient-centered outcomes research requiring that stakeholder engagement play a key role in governance (eg, research guidance and decision making). The purpose of this report is to describe the governance structure of a newly formed PPRN and the activities undertaken prelaunch and postlaunch to evaluate and improve the engagement of patient stakeholders in governance.MethodsDuring the 18-month start-up period of ArthritisPower, a PPRN for adult rheumatologic conditions, 12 members of the patient body of the PPRN governance completed a 12-item preassessment and postassessment based on the Patient-Centered Outcomes Research Institute (PCORI) Engagement Rubric. The assessment was intended to measure Patient Governor (PG) perceptions of their engagement in governance within the first 3 months of their involvement at an in-person orientation. Six months later, the PG Chair initiated a mid-year evaluation with the same group to identify areas for improvement. Semistructured phone interviews were conducted with 11 PGs who were asked to rate and explain their perceptions about their participation in PPRN governance, the progress of the PPRN toward conducting research, the support they receive from staff, and the support they receive from other PGs. Results were compiled and interpreted by the Chair with help from the coprincipal investigator.ResultsPreassessment/postassessments indicated that PGs understood their governance role and decision-making authority after in-person orientation and felt that major PPRN decisions were being made with their input. Feedback and scores from the PG-led mid-year evaluation coalesced around 3 themes: a preference for receiving news and updates via email to allow more discussion and decision making during conference calls, a desire for guidance about how best to help advance the PPRN toward the conduct of research, and a need to communicate with each other as a group outside of monthly conference calls. Suggested activities to support patient engagement in PPRN governance include communicating clear expectations, providing well-prepared tools for engagement, and conducting regular assessments.ConclusionsMembers of an online patient community are willing to share their expertise to participate in and shape research governance and bring both their professional and lived health experience to the development and improvement of PPRN governance structure. A patient-initiated and patient-led evaluation of governance communication procedures within the PPRN provided more specific recommendations for improvement than did an investigator-led preevaluation/postevaluation based on the PCORI Engagement Rubric.
| S-EPMC6143204 | biostudies-literature
Project description:Dermatitis herpetiformis has been investigated in the past; however, only a limited number of studies have reported its incidence based on validated nationwide population-based registries. To address this gap, the aims of this study are to estimate the incidence of dermatitis herpetiformis in Sweden and to validate the National Patient Register (NPR) for diagnosis of dermatitis herpetiformis. A population-based open cohort study was conducted, including all patients diagnosed with dermatitis herpetiformis (International Classification of Diseases 10th revision; ICD-10 code L13.0) in Sweden from 2005 to 2018 (n = 1,724), identified from the NPR. The diagnosis of dermatitis herpetiformis in the NPR was validated using medical records, histopathological and immunopathological data, yielding a positive predictive value (PPV) of 62.5%. The mean annual incidence of dermatitis herpetiformis was 0.93/100,000 (95% confidence interval 0.79-1.08), female to male ratio 1:1, and mean age at diagnosis 60.9 years. In conclusion, this large nationwide cohort study showed a low validity for diagnosis of dermatitis herpetiformis in the NPR, and the adjusted incidence rate of dermatitis herpetiformis in Sweden was estimated to be 0.93/100,000, which is lower than that in previous Swedish studies.
| S-EPMC10666066 | biostudies-literature
Project description:The reason why only few coeliac patients develop the cutaneous manifestation of the disease, named dermatitis herpetiformis (DH), is still unknown. Epidermal transglutaminase (TG3) has been described as the main autoantigen of humoral immunity in DH but the mechanisms leading to this autoimmune response remain obscure. Here we characterized T cells from skin, gut and peripheral blood of DH and coeliac disease (CD) patients, evaluated the impact of the gluten-free diet on circulating T lymphocytes' phenotype and investigated antigen specific T cell response toward epidermal and tissue transglutaminase (TG2). DH patients showed an increased frequency of skin-derived T cells producing TNFα when compared to CD patients. Moreover, circulating T cells producing TNFα and IL-17A positively correlated with clinical score of skin disease activity and decreased after gluten-free diet. Finally, TG2 and TG3-specific T cells resulted more reactive to antigens stimulation in DH patients and showed cross reactivity toward the two autoantigens in both the group of patients. Our data suggest a role of TNFα and IL-17A producing cells in the development of DH and, for the first time, show the existence of a crossed T cell response toward the two transglutaminases isoforms, thus suggesting new insights on T cells role in skin damage.
| S-EPMC8093623 | biostudies-literature
Project description:BackgroundParticipating in clinical trials is a metric of high-quality cancer care and improves survival. However, Black individuals with cancer are less likely to be enrolled in clinical trials and experience a disproportionate burden of cancer mortality compared to Whites. Patient-engaged research is one potential strategy to address racial inequities in clinical trials, but little is known about best practices for engaging Black individuals and communities impacted by cancer in research partnerships.MethodsWe used a community engaged research approach to establish a patient advisory council (PAC) representative of the patient population served by a safety net hospital cancer center. We outline the process of establishing the PAC and the lessons learned.ResultsThe inaugural PAC included 7 members representative of the cancer center's patient demographics. PAC members developed a patient centered vision, mission and action plan. PAC and community-academic research partners experienced the transformative power of centering the lived experiences of patients of color to promote health equity in cancer research.ConclusionEstablishing a patient advisory council at a safety net hospital cancer care center provided a platform for engaging a hardly reached population in patient centered research.
| S-EPMC8547568 | biostudies-literature
Project description:ObjectivePatient-powered research networks (PPRNs) are a valuable source of patient-generated information. Diagnosis code-based algorithms developed by PPRNs can be used to query health plans' claims data to identify patients for research opportunities. Our objective was to implement privacy-preserving record linkage processes between PPRN members' and health plan enrollees' data, compare linked and nonlinked members, and measure disease-specific confirmation rates for specific health conditions.Materials and methodsThis descriptive study identified overlapping members from 4 PPRN registries and 14 health plans. Our methods for the anonymous linkage of overlapping members used secure Health Insurance Portability and Accountability Act-compliant, 1-way, cryptographic hash functions. Self-reported diagnoses by PPRN members were compared with claims-based computable phenotypes to calculate confirmation rates across varying durations of health plan coverage.ResultsData for 21 616 PPRN members were hashed. Of these, 4487 (21%) members were linked, regardless of any expected overlap with the health plans. Linked members were more likely to be female and younger than nonlinked members were. Irrespective of duration of enrollment, the confirmation rates for the breast or ovarian cancer, rheumatoid or psoriatic arthritis or psoriasis, multiple sclerosis, or vasculitis PPRNs were 72%, 50%, 75%, and 67%, increasing to 91%, 67%, 93%, and 80%, respectively, for members with ≥5 years of continuous health plan enrollment.ConclusionsThis study demonstrated that PPRN membership and health plan data can be successfully linked using privacy-preserving record linkage methodology, and used to confirm self-reported diagnosis. Identifying and confirming self-reported diagnosis of members can expedite patient selection for research opportunities, shorten study recruitment timelines, and optimize costs.
| S-EPMC7647185 | biostudies-literature