Core Competencies for Serious Illness Conversations: An Integrative Systematic Review.

Objective: The Serious Illness Care Program was developed to support goals and values discussions between seriously ill patients and their clinicians. The core competencies, that is, the essential clinical conversation skills that are described as requisite for effective serious illness conversations (SICs) in practice, have not yet been explicated. This integrative systematic review aimed to identify core competencies for SICs in the context of the Serious Illness Care Program. Methods: Articles published between January 2014 and March 2023 were identified in MEDLINE, PsycINFO, CINAHL, and PubMed databases. In total, 313 records underwent title and abstract screening, and 96 full-text articles were assessed for eligibility. The articles were critically appraised using the Joanna Briggs Institute Critical Appraisal Guidelines, and data were analyzed using thematic synthesis. Results: In total, 53 articles were included. Clinicians' core competencies for SICs were described in 3 themes: conversation resources, intrapersonal capabilities, and interpersonal capabilities. Conversation resources included using the conversation guide as a tool, together with applying appropriate communication skills to support better communication. Intrapersonal capabilities included calibrating one's own attitudes and mindset as well as confidence and self-assurance to engage in SICs. Interpersonal capabilities focused on the clinician's ability to interact with patients and family members to foster a mutually trusting relationship, including empathetic communication with attention and adherence to patient and family members views, goals, needs, and preferences. Conclusions: Clinicians need to efficiently combine conversation resources with intrapersonal and interpersonal skills to successfully conduct and interact in SICs.

Evaluation of the Swedish Self-Efficacy in Palliative Care Scale and exploration of nurses' and physicians' self-efficacy in Swedish hospitals: A cross-sectional study.

BACKGROUND: Previous research found that healthcare professionals had low preparedness for palliative care. Thus, it is necessary to explore healthcare professionals' self-efficacy. The Swedish Self-Efficacy in Palliative Care Scale (SEPC-SE) evaluates readiness in communication, patient management and multidisciplinary teamwork; however, it should be tested on a larger population. Furthermore, the constructs of the SEPC-SE should be compared to that of the original SEPC. AIM: This study aimed to evaluate the consensus between the construct validity and reliability of the SEPC and the translated and adapted SEPC-SE. Furthermore, it aimed to describe and compare the self-efficacy of nurses and physicians in hospitals and explore the associated factors. METHODS: The nurses (n = 288) and physicians (n = 104) completed the SEPC-SE. Factor analysis with Cronbach's alpha evaluated validity and reliability, and an analysis using the Mann-Whitney U test compared self-efficacy and multiple linear regression-associated factors. RESULTS: The SEPC-SE revealed three factors with high reliability. Education or experience in specialised palliative care was minor, especially for nurses. Self-efficacy was highest in patient management (nurses, median [md] = 74.57, physicians md = 81.71, p = 0.010) and communication (nurses md = 69.88, physicians md = 77.00, p = 0.141) and lowest in multidisciplinary teamwork (nurses md = 52.44, physicians md = 62.88, p = 0.001). The strongest associations with self-efficacy were education at work and advanced homecare experiences. In addition, there were significant associations between years in the profession, male sex, physicians and university education. CONCLUSION: The SEPC-SE is valid and reliable for measuring self-efficacy. Nurses had lower self-efficacy than physicians. Physicians were associated with higher self-efficacy and had more education and experience in palliative care settings, which may explain their levels of self-efficacy.

Symptom assessment in the dying: family members versus healthcare professionals.

OBJECTIVES: Symptom management and support of the family members (FMs) are considered essential aspects of palliative care. During end of life, patients are often not able to self-report symptoms. There is little knowledge in the literature of how healthcare professionals (HCPs) assess symptoms compared with FMs. The objective was to compare the assessment of symptoms and symptom relief during the final week of life between what was reported by FMs and what was reported by HCPs. METHODS: Data from the Swedish Register of Palliative Care from 2021 and 2022 were used to compare congruity of the assessments by the FMs and by HCPs regarding occurrence and relief of three symptoms (pain, anxiety and confusion), using Cohen's kappa. RESULTS: A total of 1131 patients were included. The agreement between FMs and HCPs was poor for occurrence of pain and confusion (kappa 0.25 and 0.16), but fair for occurrence of anxiety (kappa 0.30). When agreeing on a symptom being present, agreement on relief of that symptom was poor (kappa 0.04 for pain, 0.10 for anxiety and 0.01 for confusion). The trend was that HCPs more often rated occurrence of pain and anxiety, less often occurrence of confusion and more often complete symptom relief compared with the FMs. CONCLUSIONS: The views of FMs and HCPs of the patients' symptoms differ in the end-of-life context, but both report important information and their symptom assessments should be considered both together and individually. More communication between HCPs and FMs could probably bridge some of these differences.

Core elements of serious illness conversations: an integrative systematic review.

BACKGROUND: Ariadne Labs' Serious Illness Care Program (SICP), inclusive of the Serious Illness Conversation Guide (SICG), has been adapted for use in a variety of settings and among diverse population groups. Explicating the core elements of serious illness conversations could support the inclusion or exclusion of certain components in future iterations of the programme and the guide. AIM: This integrative systematic review aimed to identify and describe core elements of serious illness conversations in relation to the SICP and/or SICG. DESIGN: Literature published between 1 January 2014 and 20 March 2023 was searched in MEDLINE, PsycINFO, CINAHL and PubMed. All articles were evaluated using the Joanna Briggs Institute Critical Appraisal Guidelines. Data were analysed with thematic synthesis. RESULTS: A total of 64 articles met the inclusion criteria. Three themes were revealed: (1) serious illness conversations serve different functions that are reflected in how they are conveyed; (2) serious illness conversations endeavour to discover what matters to patients and (3) serious illness conversations seek to align what patients want in their life and care. CONCLUSIONS: Core elements of serious illness conversations included explicating the intention, framing, expectations and directions for the conversation. This encompassed discussing current and possible trajectories with a view towards uncovering matters of importance to the patient as a person. Preferences and priorities could be used to inform future preparation and recommendations. Serious illness conversation elements could be adapted and altered depending on the intended purpose of the conversation.

Rheumatoid arthritis chondrocytes produce increased levels of pro-inflammatory proteins.

Objective: To investigate whether articular chondrocytes from rheumatoid arthritis (RA) patients have acquired a proinflammatory phenotype. Method: Articular cartilage explants from RA patients and healthy controls (HC) were cultured with or without interleukin (IL)-1ß for two weeks. Protein levels of cytokines and metalloproteinases (MMPs) in the supernatant were measured by LUMINEX, mRNA with qPCR and nitrogen oxide (NO) levels with Griess assay. Results: Within 24 â€‹h after culture, cartilage explants from RA spontaneously produced MMP-1 and MMP-13, and matrix components (aggrecan and collagen type IV) were released. In addition, the RA explants released higher levels of tumor necrosis factor, interferon-γ, IL-33, IL-18, vascular endothelial growth factor-A, IL-6 but not IL-8, and granulocyte-macrophage colony-stimulating factor (GM-CSF) as compared with HC. During two weeks of incubation the higher levels did not diminish. IL-1ß stimulation further increased the levels of IL-6, IL-8 and GM-CSF, mainly in RA explants, and induced increased levels of NO in the supernatant from both HC and RA explants, as a result of chondrocyte activation. Conclusions: RA chondrocytes are activated with a proinflammatory profile involving the production of cytokines as well as MMP-1 and MMP-13, that can lead to release of matrix molecules after activation, which suggests that the chondrocytes have a proinflammatory phenotype and thereby an active role in the pathogenesis.

Organizational readiness to implement the Serious Illness Care Program in hospital settings in Sweden.

BACKGROUND: The Serious Illness Care Program (SICP) is a model developed for structured communication, identifying patients, and training physicians to use a structured guide for conversations with patients and family members. However, there is a lack of knowledge regarding the sustainable implementation of this conversation model. Therefore, the aim of this study was to identify barriers and enablers during the implementation of the SICP in hospital settings. METHODS: The SICP was implemented at 20 units in two hospitals in Sweden. During the implementation process, seven individual interviews and two group interviews were conducted with seven facilitators (five physicians, one behavioral therapist, and one administrator). Data were analyzed using qualitative content analysis, first inductively, and then deductively using the organizational readiness for change as a theoretical framework. RESULT: The analysis resulted in three factors acting as enablers and eight factors acting as enablers and/or barriers during the implementation of the SICP. The three factors considered as enablers were preliminaries, identifying patients, and facilitator's role. The eight factors considered as enablers and/or barriers were broad implementation, leadership, time, confidence, building foundation, motivation to work change, motivation for training in serious illness conversations, and attitudes. CONCLUSION: This study indicates limited readiness to implement the SICP in hospital settings due to considerable variation in organizational contextual factors, change efficacy, and change commitment. The identified enablers and barriers for implementation of the SICP could guide and support future implementations to be sustainable over time.

Translation, adaptation, and validation of the Self-efficacy in Palliative Care scale (SEPC) for use in Swedish healthcare settings.

BACKGROUND: One challenge for healthcare professionals when delivering palliative care can be their lack of confidence. The Self-efficacy in Palliative Care Scale (SEPC) is considered a valid and reliable assessment scale to evaluate confidence when delivering palliative care. Currently, there is not a reliable instrument aimed to measure healthcare professionals' confidence in palliative care in Swedish. Therefore, this study aimed to translate, culturally adapt, and validate the SEPC-scale for use in a Swedish healthcare context. METHODS: This study applied the World Health Organization's (WHO) guidelines for translating and adapting instruments, using forward and back-translation, an expert panel, and cognitive interviews. Swedish experts in palliative care (n = 6) assessed the Swedish version of the SEPC-scale based on its relevance, understandability, clarity, and sensitivity on a Likert scale. Methods involved calculation of content validity index (CVI) with modified kappa statistics and cognitive interviewing with healthcare professionals (n = 10) according to the "think-aloud" method. RESULTS: Calculation of I-CVI (Item-CVI) showed that the Swedish SEPC-scale was considered relevant but needed some modifications to improve its understandability and clarity. The experts recognized an absence of precision in some items that affected clarity and understanding. Likewise, the healthcare professionals highlighted some challenges with understandability and clarity. They indicated that the scale was relevant, but a few items needed adjustment to fit a broader range of healthcare professionals. Items that referred to death and dying could be sensitive but were considered relevant. CONCLUSIONS: The SEPC-scale is considered valid for use in Swedish healthcare practice, for a broad range of healthcare professionals, and for diagnoses other than cancer. This study shows that cultural adaptation is necessary for establishing relevance and enabling acceptance to various healthcare professionals and contexts in the target country.

Translation, Cultural Adaptation, and Content Validation of the Palliative Care Self-Efficacy Scale for Use in the Swedish Context.

The Palliative Care Self-Efficacy Scale (PCSE) is a valid instrument in English for assessing healthcare professionals' self-efficacy in providing palliative care; it has not been translated into Swedish. The aim of this study was to describe the translation, cultural adaptation, and content-validation process of the PCSE scale. In this study, forward and backward translations, pretesting including an expert panel (n = 7), and cognitive interviewing with possible healthcare professionals (physicians, nurses, and assistant nurses) (n = 10) were performed. Experts in palliative care rated items on a Likert scale based on their understandability, clarity, sensitivity, and relevance. The item-level content validity index (I-CVI) and modified kappa statistics were calculated. Healthcare professionals were interviewed using the think-aloud method. The translation and validation process resulted in the final version of the PCSE scale. The average I-CVI for sensitivity was evaluated and approved. Most of the items were approved for clarity, some items lacked understandability, but a majority of the items were considered relevant. The healthcare professionals agreed that the items in the questionnaire evoked emotions, but were relevant for healthcare professionals. Thus, the Palliative Care Self-Efficacy scale is relevant for assessing healthcare professionals' self-efficacy in palliative care in a Swedish care context. Further research using psychometric tests is required.

End-of-life discussions in residential care homes improves symptom control: a national register study.

BACKGROUND: In Europe, residential care homes (RCHs) rather than hospitals are the most common care facilities for the older adult and the place where most deaths occur in this age group. There is a lack of knowledge regarding end-of-life (EOL) discussions and how they correlate with symptoms and symptom relief. OBJECTIVE: The aim was to examine the correlation between EOL discussions and symptom occurrence, symptom relief and prescriptions or PRN drugs against symptoms for care home residents. METHODS: All expected deaths at RCHs from 1 October 2015 to 31 December 2016 and registered in the Swedish Register of Palliative Care were included. Univariate and multivariate logistic regression were used to compare the RCH residents, or their family members, who had received documented EOL discussions with a physician (the EOL discussion group) and the non-EOL discussion group. RESULTS: The EOL discussion group (n=17 071) had a higher prevalence of pain, nausea, anxiety, death rattles and shortness of breath reported, compared with the non-EOL discussion group (n=4164). Those with symptoms were more often completely relieved and had more often been prescribed PRN drugs against that symptom in the EOL discussion group. All differences remained significant when adjusting for age, time living in unit and cause of death. CONCLUSION: The results indicate that EOL discussions are correlated with higher prevalence of symptoms, but also with better symptom relief and prescription of symptom drugs PRN when symptomatic. A possible explanation for this is that the EOL discussion can work as an opportunity to discuss symptoms and treatment for symptom relief.

Moderate- to high intensity aerobic and resistance exercise reduces peripheral blood regulatory cell populations in older adults with rheumatoid arthritis.

OBJECTIVE: Exercise can improve immune health and is beneficial for physical function in patients with rheumatoid arthritis (RA), but the immunological mechanisms are largely unknown. We evaluated the effect of moderate- to high intensity exercise with person-centred guidance on cells of the immune system, with focus on regulatory cell populations, in older adults with RA. METHODS: Older adults (≥65 years) with RA were randomized to either 20-weeks of moderate - to high intensity aerobic and resistance exercise (n = 24) or to an active control group performing home-based exercise of light intensity (n = 25). Aerobic capacity, muscle strength, DAS28 and CRP were evaluated. Blood samples were collected at baseline and after 20 weeks. The frequency of immune cells defined as adaptive regulatory populations, CD4 + Foxp3 + CD25 + CD127- T regulatory cells (Tregs) and CD19 + CD24hiCD38hi B regulatory cells (Bregs) as well as HLA-DR-/lowCD33 + CD11b + myeloid derived suppressor cells (MDSCs), were assessed using flow cytometry. RESULTS: After 20 weeks of moderate- to high intensity exercise, aerobic capacity and muscle strength were significantly improved but there were no significant changes in Disease Activity Score 28 (DAS28) or CRP. The frequency of Tregs and Bregs decreased significantly in the intervention group, but not in the active control group. The exercise intervention had no effect on MDSCs. The reduction in regulatory T cells in the intervention group was most pronounced in the female patients. CONCLUSION: Moderate- to high intensity exercise in older adults with RA led to a decreased proportion of Tregs and Bregs, but that was not associated with increased disease activity or increased inflammation. TRIAL REGISTRATION: Improved Ability to Cope With Everyday Life Through a Person-centered Training Program in Elderly Patients With Rheumatoid Arthritis - PEP-walk Study, NCT02397798. Registered at ClinicalTrials.gov March 19, 2015.

Influence of blue mussel (Mytilus edulis) intake on fatty acid composition in erythrocytes and plasma phospholipids and serum metabolites in women with rheumatoid arthritis.

Intake of blue mussels decreased disease activity in women with rheumatoid arthritis (RA) in the randomized cross-over MIRA (Mussels, inflammation and RA) trial. This study investigates potential causes of the decreased disease activity by analysing fatty acid composition in erythrocytes and plasma phospholipids and serum metabolites in samples from the participants of the MIRA trial. Twenty-three women completed the randomized 2 × 11-week cross-over dietary intervention, exchanging one cooked meal per day, 5 days a week, with a meal including 75 g blue mussels or 75 g meat. Fatty acid composition in erythrocytes and plasma and 1H Nuclear Magnetic Resonance (1H NMR) metabolomics data were analysed with multivariate data analysis. Orthogonal Projections to Latent Structures with Discriminant Analysis (OPLS-DA) and OPLS with effect projections (OPLS-EP) were performed to compare the two diets. The fatty acid profile in erythrocytes was different after intake of blue mussels compared to the control diet, and all samples were correctly classified to either the blue mussel diet or control diet. Changes following blue mussel intake included significant increases in omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) at the group level but not for all individuals. The fatty acid profile in plasma phospholipids and 1H NMR serum metabolites did not differ significantly between the diets. To conclude, modelling fatty acids in erythrocytes may be a better biomarker for seafood intake than only EPA and DHA content. The change in fatty acid pattern in erythrocytes could be related to reduction in disease activity, although it cannot be excluded that other factors than omega-3 fatty acids potentiate the effect.

Family members' experiences of care of the dying in residential care homes where the Liverpool Care Pathway was used.

BACKGROUND: Residential care homes (RCHs) are increasingly becoming a common place of death for older people. AIM: The aim of this study was to describe family members' experiences of care of the dying in RCHs where the Liverpool care pathway for the dying patient was used. METHODS: This study had a descriptive qualitative study design. Fifteen (n=15) individual interviews were analysed using qualitative content analysis. RESULTS: The analysis resulted in three themes: being confident in a familiar and warm atmosphere, being involved vs not being involved in end-of-life (EoL) care, and being consoled by witnessing the health professional's endeavour to relieve suffering. SIGNIFICANCE OF RESULTS: The results indicated that taking part in a care plan seems to increase family members' feelings of involvement in EoL care. This study also highlights the family members' needs for increased possibilities for EoL discussions with the GP.

Factors Associated With Symptom Relief in End-of-Life Care in Residential Care Homes: A National Register-Based Study.

CONTEXT: Residential care homes (RCHs) are a common place of death. Previous studies have reported a high prevalence of symptoms such as pain and shortness of breath among residents in the last week of life. OBJECTIVES: The aim of the study was to explore the presence of symptoms and symptom relief and identify factors associated with symptom relief of pain, nausea, anxiety, and shortness of breath among RCH residents in end-of-life care. METHODS: The data consisted of all expected deaths at RCHs registered in the Swedish Register of Palliative Care (N = 22,855). Univariate and multiple logistic regression analyses were conducted. RESULTS: Pain was reported as the most frequent symptom of the four symptoms (68.8%) and the one that most often had been totally relieved (84.7%) by care professionals. Factors associated with relief from at least one symptom were gender; age; time in the RCH; use of a validated pain or symptom assessment scale; documented end-of-life discussions with physicians for both the residents and family members; consultations with other units; diseases other than cancer as cause of death; presence of ulcers; assessment of oral health; and prescribed pro re nata injections for pain, nausea, and anxiety. CONCLUSION: Our results indicate that use of a validated pain assessment scale, assessment of oral health, and prescribed pro re nata injections for pain, nausea, and anxiety might offer a way to improve symptom relief. These clinical tools and medications should be implemented in the care of the dying in RCHs, and controlled trials should be undertaken to prove the effect.

Care professional's experiences about using Liverpool Care Pathway in end-of-life care in residential care homes.

BACKGROUND: Residential care homes (RCHs) play an important role in end-of-life care, being the most common place of death for elderly people in several European countries. Care pathways such as the Liverpool Care Pathway for the Dying Patient (LCP) are used to improve and ensure quality care at the end of life. There is a lack of scientific evidence supporting the use of care pathways. DESIGN: A descriptive qualitative study. OBJECTIVE: The aim was to describe care professionals' experiences of using the Liverpool Care Pathway for the Dying Patient in the care of dying residents in residential care homes. METHODS: Five focus group interviews and two individual interviews with enrolled nurses (n = 10), Registered Nurses (n = 9) and general practitioners (n = 5) were carried out and analysed using qualitative content analysis. RESULTS: Care professionals expressed that they became confident through a shared approach to care, were supported to tailor the care according to the residents' individual needs, were supported to involve family members in decision-making and care and became more aware of the care environment. CONCLUSION: The results of this study indicate that the LCP might be a useful tool for care professionals in improving end-of-life care in RCHs through increased attention to the goals of care, the individual needs of residents and family involvement.

Improving the genotyping resolution of Cryptosporidium hominis subtype IbA10G2 using one step PCR-based amplicon sequencing.

Cryptosporidium hominis gp60 subtype IbA10G2 is a common cause of cryptosporidiosis. This subtype is responsible for many waterborne outbreaks as well as sporadic cases and is considered virulent and highly important in the epidemiology of cryptosporidiosis. Due to low heterogeneity within the genome of C. hominis it has been difficult to identify epidemiological markers with higher resolution than gp60. However, new markers are required in order to improve outbreak investigations and studies of the transmission dynamics of this clinically important subtype. Based on the whole genome sequences of 17 C. hominis isolates, we have identified several differential loci and developed a new sequence based typing panel with higher resolution than gp60. An amplicon sequencing method was also developed which is based on a one-step PCR which can be sequenced using a Next Generation Sequencing (NGS) platform. Such a system provides a rapid and high-throughput workflow. A panel of nine loci with 10 single nucleotide variants (SNV) was selected and evaluated using clinical IbA10G2 isolates from sporadic, cluster and outbreak associated cases. The specimens were separated into 10 different genetic profiles named sequence types (STs). All isolates within an outbreak or cluster belonged to the same ST, including several samples from the two large waterborne outbreaks which occurred in Sweden between 2010 and 2011 indicating that these outbreaks might be linked. The results demonstrate the methods suitability for improved genotyping of C. hominis IbA10G2.

End-of-life care in residential care homes: a retrospective study of the perspectives of family members using the VOICES questionnaire.

BACKGROUND: In Europe, residential care homes (RCHs) are replacing hospitals as the place where death occurs, and they play an important role in end-of-life (EOL) care. OBJECTIVE: The aim was to describe the quality of care during the last 3 months and last 3 days of life of those who died in RCHs as reported by family members. We also investigated whether there were differences in the EOL care of younger patients (<85 years) vs. the oldest old patients (≥85 years) as reported by family members. DESIGN: A retrospective survey design. METHODS: Deaths (n = 189) at 19 RCHs in one municipality in Sweden were included. Family members were sent the VOICES questionnaire 1 month after their elderly relative had died. Descriptive statistics were used. RESULTS: In the last 3 days before death, most family members reported there was enough help with nursing (93%) and personal care (78.5%). Among the family members, 86% were told that the resident was likely to die shortly. Most (94.1%) of residents were reported to have died at their preferred place. No significant difference was found between age groups. Family members also reported that about half of the elderly had pain (46.5%) and 86.4% received treatment; 55.9% had breathlessness and 39.7% received treatment. Breathlessness was significantly (p = 0.01) more common in the younger group, and they were treated more often (p = 0.006) than the oldest old. CONCLUSION: This study revealed an overall positive picture of personal and nursing care and communication. These findings indicate that the quality of EOL care at RCHs is high. Inadequate management was found for symptom relief the last days of life. This suggests that this subject merits further attention by care professionals. To achieve better quality of EOL care at RCHs, we emphasise the importance of systematically working to improve symptom relief.

Pyrimidine-Based Inhibitors of Dynamin I GTPase Activity: Competitive Inhibition at the Pleckstrin Homology Domain.

The large GTPase dynamin mediates membrane fission during clathrin-mediated endocytosis (CME). The aminopyrimidine compounds were reported to disrupt dynamin localization to the plasma membrane via the PH domain and implicate this mechanism in the inhibition of CME. We have used a computational approach of binding site identification, docking, and interaction energy calculations to design and synthesize a new library of aminopyrimidine analogues targeting site-2 of the pleckstrin homology (PH) domain. The optimized analogues showed low micromolar inhibition against both dynamin I (IC50 = 10.6 ± 1.3 to 1.6 ± 0.3 µM) and CME (IC50(CME) = 65.9 ± 7.7 to 3.7 ± 1.1 mM), which makes this series among the more potent inhibitors of dynamin and CME yet reported. In CME and growth inhibition cell-based assays, the data obtained was consistent with dynamin inhibition. CEREP ExpresS profiling identified off-target effects at the cholecystokinin, dopamine D2, histamine H1 and H2, melanocortin, melatonin, muscarinic M1 and M3, neurokinin, opioid KOP and serotonin receptors.

Genomic Variation in IbA10G2 and Other Patient-Derived Cryptosporidium hominis Subtypes.

In order to improve genotyping and epidemiological analysis of Cryptosporidium spp., genomic data need to be generated directly from a broad range of clinical specimens. Utilizing a robust method that we developed for the purification and generation of amplified target DNA, we present its application for the successful isolation and whole-genome sequencing of 14 different Cryptosporidium hominis patient specimens. Six isolates of subtype IbA10G2 were analyzed together with a single representative each of 8 other subtypes: IaA20R3, IaA23R3, IbA9G3, IbA13G3, IdA14, IeA11G3T3, IfA12G1, and IkA18G1. Parasite burden was measured over a range of more than 2 orders of magnitude for all samples, while the genomes were sequenced to mean depths of between 17× and 490× coverage. Sequence homology-based functional annotation identified several genes of interest, including the gene encoding Cryptosporidium oocyst wall protein 9 (COWP9), which presented a predicted loss-of-function mutation in all the sequence subtypes, except for that seen with IbA10G2, which has a sequence identical to the Cryptosporidium parvum reference Iowa II sequence. Furthermore, phylogenetic analysis showed that all the IbA10G2 genomes form a monophyletic clade in the C. hominis tree as expected and yet display some heterogeneity within the IbA10G2 subtype. The current report validates the aforementioned method for isolating and sequencing Cryptosporidium directly from clinical stool samples. In addition, the analysis demonstrates the potential in mining data generated from sequencing multiple whole genomes of Cryptosporidium from human fecal samples, while alluding to the potential for a higher degree of genotyping within Cryptosporidium epidemiology.

Collagen epitope expression on B cells is sufficient to confer tolerance to collagen-induced arthritis.

BACKGROUND: The mechanisms underlying tolerance induction and maintenance in autoimmune arthritis remain elusive. In a mouse model of rheumatoid arthritis, collagen type II (CII)-induced arthritis, we explore the contribution of B cells to antigen-specific tolerance. METHODS: To generate expression of the CII-peptide specifically on B-cell major histocompatibility complex type II, lentiviral-based gene therapy including a B-cell-specific Igk promoter was used. RESULTS: Presentation of the CII-peptide on B cells significantly reduced the frequency and severity of arthritis as well as the serum levels of CII -specific IgG antibodies. Further, both frequency and suppressive function of regulatory T cells were increased in tolerized mice. Adoptive transfer of regulatory T cells from tolerized mice to naïve mice ameliorated the development of CII-induced arthritis. CONCLUSION: Our data suggest that endogenous presentation of the CII-peptide on B cells is one of the key contributors to arthritis tolerance induction and maintenance.

UGT1A1*28 Genotypes and Respiratory Disease in Very Preterm Infants: A Cohort Study.

BACKGROUND: Respiratory disease in the very preterm infant is frequent and often severe. Bilirubin is both a potent neurotoxin and antioxidant, and may have a clinical impact on preterm respiratory disease. The Gilbert genotype, the UGT1A1*28 allele, is the major known genetic cause of variation in bilirubin. OBJECTIVES: To study the association between respiratory disease in the very preterm infant and the UGT1A1*28 allele. METHODS: This is a cohort study of 1,354 very preterm infants (gestational age <32 weeks) born in Jutland, Denmark in 1997-2011. Genotypes were obtained from the Danish Neonatal Screening Biobank, and clinical information was obtained from the databases of two tertiary neonatal intensive care units. Outcomes were the need for surfactant therapy, any need for and duration of supplementary oxygen and bronchopulmonary dysplasia (BPD). RESULTS: Per UGT1A1*28 allele, odds were increased for any need of supplementary oxygen (odds ratio 1.26; 1.05-1.50) and for BPD (odds ratio 1.71; 1.23-2.39), the need of supplementary oxygen increased by 6.38 days (1.87-10.89), and chance per day of no longer needing supplementary oxygen was reduced (hazard rate 0.84; 0.76-0.93). No effect was observed for need of surfactant treatment (odds ratio 1.08; 0.91-1.28). Hardy-Weinberg equilibrium was unlikely for the cohort (p < 0.012). This could be explained by death prior to genotype sampling. In tests of robustness this failed to explain the primary results. CONCLUSIONS: Compared to the common genotype, UGT1A1*28 genotypes were associated with an increased need of oxygen supplementation and risk of BPD in very preterm newborns.