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1.
Clin Immunol ; 263: 110214, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38604255

ABSTRACT

OBJECTIVE: To derive childhood-onset SLE (cSLE) specific remission definitions for future treat-to-target (T2T) trials, observational studies, and clinical practice. METHODS: The cSLE International T2T Task Force conducted Delphi surveys exploring paediatric perspectives on adult-onset SLE remission targets. A modified nominal group technique was used to discuss, refine, and agree on the cSLE remission target criteria. RESULTS: The Task Force proposed two definitions of remission: 'cSLE clinical remission on steroids (cCR)' and 'cSLE clinical remission off steroids (cCR-0)'. The common criteria are: (1) Clinical-SLEDAI-2Ā KĀ =Ā 0; (2) PGA scoreĀ <Ā 0.5 (0-3 scale); (4) stable antimalarials, immunosuppressive, and biologic therapy (changes due to side-effects, adherence, weight, or when building up to target dose allowed). Criterion (3) in cCR is the prednisolone dose ≤0.1Ā mg/kg/day (maximum 5Ā mg/day), whereas in cCR-0 it is zero. CONCLUSIONS: cSLE definitions of remission have been proposed, maintaining sufficient alignment with the adult-SLE definition to facilitate life-course research.


Subject(s)
Consensus , Lupus Erythematosus, Systemic , Remission Induction , Humans , Lupus Erythematosus, Systemic/drug therapy , Lupus Erythematosus, Systemic/diagnosis , Child , Immunosuppressive Agents/therapeutic use , Age of Onset , Delphi Technique , Advisory Committees
2.
Clin Immunol ; 250: 109296, 2023 05.
Article in English | MEDLINE | ID: mdl-36934849

ABSTRACT

OBJECTIVE: To achieve a consensus-based definition of Low Disease Activity (LDA) for use in cSLE trials. METHODS: The International cSLE T2T Task Force, comprising of paediatric rheumatologists/nephrologists, and adult rheumatologists undertook a series of Delphi surveys/consensus meetings to discuss, refine, and vote upon cSLE LDA criteria. RESULTS: The Task Force agreed that LDA should be based upon the adult-SLE Lupus Low Disease Activity State definition (LLDAS), with modifications to make it applicable to cSLE (cLLDAS). They agreed upon five cLLDAS criteria: (1) SLE Disease Activity Index (SLEDAI)-2Ā K ≤4, with no activity in major organ systems; (2) no new features of lupus disease activity compared with the last assessment; (3) Physician Global Assessment score of ≤1 (0-3 scale); (4) prednisolone dose of ≤0.15Ā mg/kg/day, 7.5Ā mg/day/maximum; while on (5) stable antimalarials, immunosuppressives, and biologics. CONCLUSIONS: A cSLE-appropriate definition of cLLDAS has been generated, maintaining alignment with the adult-SLE definition to promote life-course research.


Subject(s)
Immunosuppressive Agents , Lupus Erythematosus, Systemic , Adult , Child , Humans , Severity of Illness Index , Immunosuppressive Agents/therapeutic use , Prednisolone , Consensus , Lupus Erythematosus, Systemic/diagnosis , Lupus Erythematosus, Systemic/drug therapy
3.
Clin Genet ; 92(6): 587-593, 2017 Dec.
Article in English | MEDLINE | ID: mdl-28397259

ABSTRACT

BACKGROUND: Retinoblastoma is the most common malignant tumour of the eye in childhood, with nearly all bilateral tumours and around 17% to 18% of unilateral tumours due to an oncogenic mutation in the RB1 gene in the germline. Genetic testing enables accurate risk assessment and optimal clinical management for the affected individual, siblings, and future offspring. MATERIAL AND METHODS: We carried out the first UK-wide audit of understanding of genetic testing in individuals with retinoblastoma. A total of 292 individuals aged 16 to 45 years were included. RESULTS: Patients with bilateral disease were significantly more likely to understand the implications of retinoblastoma for siblings and children. There was a significant association between not knowing the results of genetic testing or not understanding the implications and not having children, particularly in women. Surprisingly, this was also true for individuals treated for unilateral disease with a low risk of retinoblastoma for their offspring. CONCLUSION: We are concerned that individuals may be making life choices based on insufficient information regarding risks of retinoblastoma and reproductive options. We suggest that improvement in transition care is needed to enable individuals to make informed reproductive decisions and to ensure optimal care for children born at risk of retinoblastoma.


Subject(s)
Family Planning Services/ethics , Germ-Line Mutation , Health Knowledge, Attitudes, Practice , Retinal Neoplasms/diagnosis , Retinoblastoma Binding Proteins/genetics , Retinoblastoma/diagnosis , Ubiquitin-Protein Ligases/genetics , Adolescent , Adult , Decision Making/ethics , Female , Gene Expression , Genetic Counseling , Genetic Testing , Humans , Male , Middle Aged , Pedigree , Prognosis , Retinal Neoplasms/genetics , Retinal Neoplasms/pathology , Retinoblastoma/genetics , Retinoblastoma/pathology , United Kingdom
4.
HIV Med ; 13(1): 73-8, 2012 Jan.
Article in English | MEDLINE | ID: mdl-22106827

ABSTRACT

OBJECTIVES: Current British HIV Association (BHIVA) guidelines recommend that all patients with a CD4 count <350 cells/ĀµL are offered highly active antiretroviral therapy (HAART). We identified risk factors for delayed initiation of HAART following a CD4 count <350 cells/ĀµL. METHODS: All adults under follow-up in 2008 who had a first confirmed CD4 count <350 cells/ĀµL from 2004 to 2008, who had not initiated treatment and who had >6 months of follow-up were included in the study. Characteristics at the time of the low CD4 cell count and over follow-up were compared to identify factors associated with delayed HAART uptake. Analyses used proportional hazards regression with fixed (sex/risk group, age, ethnicity, AIDS, baseline CD4 cell count and calendar year) and time-updated (frequency of CD4 cell count measurement, proportion of CD4 counts <350 cells/ĀµL, latest CD4 cell count, CD4 percentage and viral load) covariates. RESULTS: Of 4871 patients with a confirmed low CD4 cell count, 436 (8.9%) remained untreated. In multivariable analyses, those starting HAART were older [adjusted relative hazard (aRH)/10 years 1.15], were more likely to be female heterosexual (aRH 1.13), were more likely to have had AIDS (aRH 1.14), had a greater number of CD4 measurements < 350 cells/ĀµL (aRH/additional count 1.18), had a lower CD4 count over follow-up (aRH/50 cells/ĀµL higher 0.57), had a lower CD4 percentage (aRH/5% higher 0.90) and had a higher viral load (aRH/log(10) HIV-1 RNA copies/ml higher 1.06). Injecting drug users (aRH 0.53), women infected with HIV via nonsexual or injecting drug use routes (aRH 0.75) and those of unknown ethnicity (aRH 0.69) were less likely to commence HAART. CONCLUSION: A substantial minority of patients with a CD4 count < 350 cells/ĀµL remain untreated despite its indication.


Subject(s)
Antiretroviral Therapy, Highly Active , HIV Infections/drug therapy , HIV Infections/immunology , Medication Adherence , Adult , Biomarkers/analysis , CD4 Lymphocyte Count , Female , Follow-Up Studies , Humans , Male , Proportional Hazards Models , Risk Factors , United Kingdom
5.
BMC Rheumatol ; 6(1): 69, 2022 Oct 15.
Article in English | MEDLINE | ID: mdl-36242078

ABSTRACT

BACKGROUND: A treat-to-target (T2T) approach, where treatment is escalated until a specific target is achieved, and re-escalated if the target is lost, has been proposed as a strategy to improve Childhood Systemic Lupus Erythematosus (cSLE) outcomes. Previous studies involving children and young people (CYP) have identified that the concept of T2T can be difficult to understand by CYP and their families. We aimed to explore the views of CYP participating in existing public and patient involvement (PPI) groups in relation to a proposed animation that is being developed to explain the concept of T2T to CYP who will be eligible for a future cSLE T2T trial. METHODS: An illustrated animation storyboard was developed on PowerPoint, to be used alongside a contemporaneous voiceover to simulate the animation for CYP participating in three existing CYP PPI groups (GenerationR, Lupus UK, and YOUR RHEUM). Mixed methods were used to generate CYP feedback on the resource, including on-line surveys and qualitative topic-guided discussion, noting CYP suggestions for improvement. Changes were made iteratively to the resources. Pre/post workshop questionnaires to assess the impact of the resource on their understanding of T2T were completed anonymously. RESULTS: 40 CYP were consulted; 16/40 (40%) from GenerationR (median age 15-years [IQR 12-15]), 12/40 (30%) from Lupus UK (median age 27-years [IQR 22-30]), and 12/40 (30%) from YOUR RHEUM (median age 17-years [IQR 16-21]). 62% of respondents had an underlying rheumatic condition. Pre-workshop median participant understanding of T2T was 2/10 [IQR 1-4], on a 1-10 scale (1 = "no understanding at all", 10 = "completely confident in my understanding"). After viewing the resource, participant understanding improved to a median of 9/10 [IQR 8-10], p < 0.0001). Overall, participants felt that the animation greatly improved their understanding of the concept of T2T, making several suggestions for improvement. CONCLUSION: Involvement of CYP in research is crucial to help improve the design/delivery of studies, ensuring relevance to CYP and their families. This manuscript demonstrates the involvement of CYP in the development of an animation that will be integral to a future clinical trial, helping to describe the T2T approach in a comprehensible way to eligible CYP and their families, supporting study recruitment.

6.
BMJ Open ; 12(11): e063271, 2022 11 10.
Article in English | MEDLINE | ID: mdl-36356998

ABSTRACT

INTRODUCTION: SARS-CoV-2 infection rarely causes hospitalisation in children and young people (CYP), but mild or asymptomatic infections are common. Persistent symptoms following infection have been reported in CYP but subsequent healthcare use is unclear. We aim to describe healthcare use in CYP following community-acquired SARS-CoV-2 infection and identify those at risk of ongoing healthcare needs. METHODS AND ANALYSIS: We will use anonymised individual-level, population-scale national data linking demographics, comorbidities, primary and secondary care use and mortality between 1 January 2019 and 1 May 2022. SARS-CoV-2 test data will be linked from 1 January 2020 to 1 May 2022. Analyses will use Trusted Research Environments: OpenSAFELY in England, Secure Anonymised Information Linkage (SAIL) Databank in Wales and Early Pandemic Evaluation and Enhanced Surveillance of COVID-19 in Scotland (EAVE-II). CYP aged ≥4 and <18 years who underwent SARS-CoV-2 reverse transcription PCR (RT-PCR) testing between 1 January 2020 and 1 May 2021 and those untested CYP will be examined.The primary outcome measure is cumulative healthcare cost over 12 months following SARS-CoV-2 testing, stratified into primary or secondary care, and physical or mental healthcare. We will estimate the burden of healthcare use attributable to SARS-CoV-2 infections in the 12 months after testing using a matched cohort study of RT-PCR positive, negative or untested CYP matched on testing date, with adjustment for confounders. We will identify factors associated with higher healthcare needs in the 12 months following SARS-CoV-2 infection using an unmatched cohort of RT-PCR positive CYP. Multivariable logistic regression and machine learning approaches will identify risk factors for high healthcare use and characterise patterns of healthcare use post infection. ETHICS AND DISSEMINATION: This study was approved by the South-Central Oxford C Health Research Authority Ethics Committee (13/SC/0149). Findings will be preprinted and published in peer-reviewed journals. Analysis code and code lists will be available through public GitHub repositories and OpenCodelists with meta-data via HDR-UK Innovation Gateway.


Subject(s)
COVID-19 , Child , Humans , Adolescent , COVID-19/epidemiology , SARS-CoV-2 , COVID-19 Testing , Cohort Studies , Wales/epidemiology , Delivery of Health Care , Observational Studies as Topic
7.
HIV Med ; 12(10): 583-93, 2011 Nov.
Article in English | MEDLINE | ID: mdl-21569188

ABSTRACT

OBJECTIVE: The aim of the study was to describe trends in CD4 cell counts in HIV-infected patients after initiation of combination antiretroviral therapy (cART), according to CD4 cell count at initiation (baseline), and to quantify the implications of virological failure for these trends. METHODS: Eligible participants from the UK Collaborative HIV Cohort (CHIC) were antiretroviralnaĆÆve and started cART after 1997. Random effects were used to model CD4 cell count trends, accounting for multiple measurements within participants. We assessed whether CD4 cell count trends varied according to baseline CD4 cell count and separately in participants with and without post-cART virological failure. Effects of post-cART virological failure (>1000 HIV-1 RNA copies/mL) on subsequent CD4 cell counts were evaluated. FINDINGS: A total of 7069 participants were included in the analysis (median follow-up in all baseline CD4 cell count groups was ≥ 35 months). Among participants without virological failure ≥ 6 months after the start of cART, CD4 cell counts continued to increase up to 8 years, with little evidence that differences between baseline CD4 cell count groups diminished over time. Virological failure ≥ 6 months after the start of cART was associated with lower subsequent CD4 cell counts, with greater CD4 cell count reduction for more recent virological failure and higher viral load. CONCLUSIONS: Post-cART CD4 cell counts are strongly related to pre-cART CD4 cell counts. CD4 cell count recovery is greatest in individuals who can avoid viral loads >1000 copies/mL while on cART.


Subject(s)
Anti-HIV Agents/therapeutic use , CD4 Lymphocyte Count , HIV Infections/immunology , HIV-1/immunology , RNA, Viral/immunology , Viral Load/immunology , Adult , CD4 Lymphocyte Count/trends , Cohort Studies , Drug Therapy, Combination , Female , Follow-Up Studies , HIV Infections/epidemiology , Humans , Male , Prognosis , RNA, Viral/drug effects , United Kingdom/epidemiology , Viral Load/trends
8.
Pilot Feasibility Stud ; 7(1): 1, 2021 Jan 04.
Article in English | MEDLINE | ID: mdl-33390191

ABSTRACT

BACKGROUND: Cystic fibrosis (CF) is a life-limiting genetic condition in which daily therapies to maintain lung health are critical, yet treatment adherence is low. Previous interventions to increase adherence have been largely unsuccessful and this is likely due to a lack of focus on behavioural evidence and theory alongside input from people with CF. This intervention is based on a digital platform that collects and displays objective nebuliser adherence data. The purpose of this paper is to identify the specific components of an intervention to increase and maintain adherence to nebuliser treatments in adults with CF with a focus on reducing effort and treatment burden. METHODS: Intervention development was informed by the Behaviour Change Wheel (BCW) and person-based approach (PBA). A multidisciplinary team conducted qualitative research to inform a needs analysis, selected, and refined intervention components and methods of delivery, mapped adherence-related barriers and facilitators, associated intervention functions and behaviour change techniques, and utilised iterative feedback to develop and refine content and processes. RESULTS: Results indicated that people with CF need to understand their treatment, be able to monitor adherence, have treatment goals and feedback and confidence in their ability to adhere, have a treatment plan to develop habits for treatment, and be able to solve problems around treatment adherence. Behaviour change techniques were selected to address each of these needs and were incorporated into the digital intervention developed iteratively, alongside a manual and training for health professionals. Feedback from people with CF and clinicians helped to refine the intervention which could be tailored to individual patient needs. CONCLUSIONS: The intervention development process is underpinned by a strong theoretical framework and evidence base and was developed by a multidisciplinary team with a range of skills and expertise integrated with substantial input from patients and clinicians. This multifaceted development strategy has ensured that the intervention is usable and acceptable to people with CF and clinicians, providing the best chance of success in supporting people with CF with different needs to increase and maintain their adherence. The intervention is being tested in a randomised controlled trial across 19 UK sites.

9.
HIV Med ; 11(7): 432-8, 2010 Aug.
Article in English | MEDLINE | ID: mdl-20146736

ABSTRACT

OBJECTIVE: Effective antiretroviral therapy (ART) has transformed the care of people with HIV, but it is important to monitor time trends in indicators of treatment success and antic future changes. METHODS: We assessed time trends from 2000 to 2007 in several indicators of treatment success in the UK Collaborative HIV Cohort (CHIC) Study, and using national HIV data from the Health Protection Agency (HPA) we developed a model to project future trends. RESULTS: The proportion of patients on ART with a viral load <50 HIV-1 RNA copies/mL increased from 62% in 2000 to 84% in 2007, and the proportion of all patients with a CD4 count <200 cells/microL decreased from 21% to 10%. During this period, the number of patients who experienced extensive triple class failure (ETCF) rose from 147 (0.9%) to 1771 (3.9%). The number who experienced such ETCF and had a current viral load >50 copies/mL rose fromz 118 (0.7%) to 857 (1.9%). Projections to 2012 suggest sustained high levels of success, with a continued increase in the number of patients who have failed multiple drugs but a relatively stable number of such patients experiencing viral loads >50 copies/mL. Numbers of deaths are projected to remain low. CONCLUSIONS: There have been continued improvements in key indicators of success in patients with HIV from 2000 to 2007. Although the number of patients who have ETCF is projected to rise in the future, the number of such patients with viral loads >50 copies/mL is not projected to increase up to 2012. New drugs may be needed in future to sustain these positive trends.


Subject(s)
Anti-HIV Agents/therapeutic use , Antiretroviral Therapy, Highly Active/trends , Forecasting , HIV Infections/drug therapy , HIV-1/drug effects , Outcome and Process Assessment, Health Care , Ambulatory Care Facilities , Anti-HIV Agents/administration & dosage , Anti-HIV Agents/pharmacology , Cohort Studies , Drug Resistance, Multiple, Viral , Female , HIV Infections/mortality , HIV Infections/virology , HIV-1/genetics , Humans , Male , Middle Aged , Models, Theoretical , Stochastic Processes , Time Factors , Treatment Failure , United Kingdom , Viral Load
10.
Int J Popul Data Sci ; 5(1): 1128, 2020 Apr 08.
Article in English | MEDLINE | ID: mdl-32935051

ABSTRACT

OBJECTIVE: To evaluate the extent to which the inter-institutional, inter-disciplinary mobilisation of data and skills in the Farr Institute contributed to establishing the emerging field of data science for health in the UK. DESIGN AND OUTCOME MEASURES: We evaluated evidence of six domains characterising a new field of science:defining central scientific challenges,demonstrating how the central challenges might be solved,creating novel interactions among groups of scientists,training new types of experts,re-organising universities,demonstrating impacts in society.We carried out citation, network and time trend analyses of publications, and a narrative review of infrastructure, methods and tools. SETTING: Four UK centres in London, North England, Scotland and Wales (23 university partners), 2013-2018. RESULTS: 1. The Farr Institute helped define a central scientific challenge publishing a research corpus, demonstrating insights from electronic health record (EHR) and administrative data at each stage of the translational cycle in 593 papers with at least one Farr Institute author affiliation on PubMed. 2. The Farr Institute offered some demonstrations of how these scientific challenges might be solved: it established the first four ISO27001 certified trusted research environments in the UK, and approved more than 1000 research users, published on 102 unique EHR and administrative data sources, although there was no clear evidence of an increase in novel, sustained record linkages. The Farr Institute established open platforms for the EHR phenotyping algorithms and validations (>70 diseases, CALIBER). Sample sizes showed some evidence of increase but remained less than 10% of the UK population in primary care-hospital care linked studies. 3.The Farr Institute created novel interactions among researchers: the co-author publication network expanded from 944 unique co-authors (based on 67 publications in the first 30 months) to 3839 unique co-authors (545 papers in the final 30 months). 4. Training expanded substantially with 3 new masters courses, training >400 people at masters, short-course and leadership level and 48 PhD students. 5. Universities reorganised with 4/5 Centres established 27 new faculty (tenured) positions, 3 new university institutes. 6. Emerging evidence of impacts included: > 3200 citations for the 10 most cited papers and Farr research informed eight practice-changing clinical guidelines and policies relevant to the health of millions of UK citizens. CONCLUSION: The Farr Institute played a major role in establishing and growing the field of data science for health in the UK, with some initial evidence of benefits for health and healthcare. The Farr Institute has now expanded into Health Data Research (HDR) UK but key challenges remain including, how to network such activities internationally.

11.
J Hosp Infect ; 104(4): 456-468, 2020 Apr.
Article in English | MEDLINE | ID: mdl-31931046

ABSTRACT

INTRODUCTION: Risk factors for carbapenemase-producing Enterobacterales (CPE) acquisition/infection and associated clinical outcomes have been evaluated in the context of clonal, species-specific outbreaks. Equivalent analyses for complex, multi-species outbreaks, which are increasingly common, are lacking. METHODS: Between December 2010 and January 2017, a case-control study of Klebsiella pneumoniae carbapenemase (KPC)-producing organism (KPCO) acquisition was undertaken using electronic health records from inpatients in a US academic medical centre and long-term acute care hospital (LTACH) with ongoing multi-species KPCO transmission despite a robust CPE screening programme. Cases had a first KPCO-positive culture >48 hĀ after admission, and included colonizations and infections (defined by clinical records). Controls had at least two negative perirectal screens and no positive cultures. Risk factors for KPCO acquisition, first infection following acquisition, and 14-day mortality following each episode of infection were identified using multi-variable logistic regression. RESULTS: In 303 cases (89 with at least one infection) and 5929 controls, risk factors for KPCO acquisition included: longer inpatient stay, transfusion, complex thoracic pathology, mechanical ventilation, dialysis, and exposure to carbapenems and Ɵ-lactam/Ɵ-lactamase inhibitors. Exposure to other KPCO-colonized patients was only a risk factor for acquisition in a single unit, suggesting that direct patient-to-patient transmission did not play a major role. There were 15 species of KPCO; 61 (20%) cases were colonized/infected with more than one species. Fourteen-day mortality following non-urinary KPCO infection was 20% (20/97 episodes) and was associated with failure to achieve source control. CONCLUSIONS: Healthcare exposures, antimicrobials and invasive procedures increased the risk of KPCO colonization/infection, suggesting potential targets for infection control interventions in multi-species outbreaks. Evidence for patient-to-patient transmission was limited.


Subject(s)
Cross Infection/epidemiology , Cross Infection/microbiology , Klebsiella Infections/epidemiology , Academic Medical Centers , Adult , Aged , Aged, 80 and over , Bacterial Proteins , Carbapenems/therapeutic use , Case-Control Studies , Cross Infection/drug therapy , Female , Humans , Klebsiella Infections/drug therapy , Klebsiella Infections/genetics , Klebsiella Infections/microbiology , Klebsiella pneumoniae/genetics , Klebsiella pneumoniae/isolation & purification , Male , Middle Aged , Risk Factors , Ubiquitin-Protein Ligases/isolation & purification , Virginia/epidemiology , beta-Lactamases
12.
Br J Ophthalmol ; 91(11): 1471-6, 2007 Nov.
Article in English | MEDLINE | ID: mdl-17522144

ABSTRACT

BACKGROUND: Developmental eye anomalies, which include anophthalmia (absent eye) or microphthalmia (small eye) are an important cause of severe visual impairment in infants and young children. Heterozygous mutations in SOX2, a SOX1B-HMG box transcription factor, have been found in up to 10% of individuals with severe microphthalmia or anophthalmia and such mutations could also be associated with a range of non-ocular abnormalities. METHODS: We performed mutation analysis on a new cohort of 120 patients with congenital eye abnormalities, mainly anophthalmia, microphthalmia and coloboma. Multiplex ligation-dependent probe amplification (MLPA) and fluorescence in situ hybridisation (FISH) were used to detect whole gene deletion. RESULTS: We identified four novel intragenic SOX2 mutations (one single base deletion, one single base duplication and two point mutations generating premature translational termination codons) and two further cases with the previously reported c.70del20 mutation. Of 52 patients with severe microphthalmia or anophthalmia analysed by MLPA, 5 were found to be deleted for the whole SOX2 gene and 1 had a partial deletion. In two of these, FISH studies identified sub-microscopic deletions involving a minimum of 328 Kb and 550 Kb. The SOX2 phenotypes include a patient with anophthalmia, oesophageal abnormalities and horseshoe kidney, and a patient with a retinal dystrophy implicating SOX2 in retinal development. CONCLUSION: Our results provide further evidence that SOX2 haploinsufficiency is a common cause of severe developmental ocular malformations and that background genetic variation determines the varying phenotypes. Given the high incidence of whole gene deletion we recommend that all patients with severe microphthalmia or anophthalmia, including unilateral cases be screened by MLPA and FISH for SOX2 deletions.


Subject(s)
Anophthalmos/genetics , Gene Deletion , HMGB Proteins/genetics , Transcription Factors/genetics , Adolescent , Adult , Child , Child, Preschool , DNA Mutational Analysis/methods , Eye Abnormalities/genetics , Female , Humans , In Situ Hybridization, Fluorescence , Male , Microphthalmos/genetics , Middle Aged , Phenotype , Polymerase Chain Reaction/methods , SOXB1 Transcription Factors
13.
Int J STD AIDS ; 18(5): 343-6, 2007 May.
Article in English | MEDLINE | ID: mdl-17524198

ABSTRACT

We aimed to evaluate the reasons for, and timing of, treatment changes in a cohort of treatment-naĆÆve patients initiating non-nucleoside reverse transcriptase inhibitor (NNRTI)-containing highly active antiretroviral therapy (HAART). All 268 patients initiating these regimens between January 1998 and September 2003 were included. Median follow up was 103 weeks. The median baseline CD4 count was 150 cells/microL. Seven patients (3%) died and 155 patients (58%) experienced a change in their HAART regimen. The reasons drugs were discontinued included toxicity in 106 patients (40%), virological failure in 21 (8%), other reasons in 23 (9%) and unknown reasons in five (2%). Fifty-one patients (19%) stopped NRTIs due to peripheral neuropathy, hyperlactataemia, lipoatrophy, lipodystrophy or myelosuppression, and these events were more likely in patients with baseline CD4 count below the median (P = 0.039). The findings in this cohort show that discontinuation of HAART was commonly due to toxicity, especially metabolic or mitochondrial toxicity in those with lower baseline CD4 count.


Subject(s)
Antiretroviral Therapy, Highly Active/adverse effects , HIV Infections/drug therapy , Nevirapine/adverse effects , Reverse Transcriptase Inhibitors/adverse effects , Adolescent , Adult , Aged , Alkynes , Antiretroviral Therapy, Highly Active/methods , Benzoxazines/adverse effects , CD4 Lymphocyte Count , Cohort Studies , Cyclopropanes , Drug Administration Schedule , Drug-Related Side Effects and Adverse Reactions , Female , Humans , Male , Middle Aged , Nevirapine/administration & dosage , Reverse Transcriptase Inhibitors/administration & dosage , Reverse Transcriptase Inhibitors/classification , United Kingdom
14.
J Med Genet ; 43(1): e2, 2006 Jan.
Article in English | MEDLINE | ID: mdl-16397066

ABSTRACT

PURPOSE: To identify the gene responsible for autosomal dominant lamellar pulverulent cataract in a four-generation British family and characterise the functional and cellular consequences of the mutation. METHODS: Linkage analysis was used to identify the disease locus. The GJA8 gene was sequenced directly. Functional behaviour and cellular trafficking of connexins were examined by expression in Xenopus oocytes and HeLa cells. RESULTS: A 262C>A transition that resulted in the replacement of proline by glutamine (P88Q) in the coding region of connexin50 (Cx50) was identified. hCx50P88Q did not induce intercellular conductance and significantly inhibited gap junctional activity of co-expressed wild type hCx50 RNA in paired Xenopus oocytes. In transfected cells, immunoreactive hCx50P88Q was confined to the cytoplasm but showed a temperature sensitive localisation at gap junctional plaques. CONCLUSIONS: The pulverulent cataract described in this family is associated with a novel GJA8 mutation and has a different clinical phenotype from previously described GJA8 mutants. The cataract likely results from lack of gap junction function. The lack of function was associated with improper targeting to the plasma membrane, most probably due to protein misfolding.


Subject(s)
Cataract/genetics , Cataract/pathology , Connexins/genetics , Eye Proteins/genetics , Gap Junctions/pathology , Genes, Dominant/genetics , Genetic Predisposition to Disease , Mutation/genetics , Chromosome Segregation , Chromosomes, Human, Pair 1/genetics , DNA Mutational Analysis , Genetic Linkage , Haplotypes , HeLa Cells , Humans , Microsatellite Repeats , Pedigree , Protein Transport , Tumor Cells, Cultured
15.
J Vet Med Educ ; 34(5): 683-8, 2007.
Article in English | MEDLINE | ID: mdl-18326782

ABSTRACT

The American Veterinary Medical Association (AVMA) Council on Education (COE) has challenged veterinary schools to improve self-assessment of curricular outcomes. One way to assess the quality of education is to gather feedback from alumni. To successfully gather feedback using a questionnaire, questions must be pertinent to veterinary education and include quantifiable responses. Several principles must be applied in questionnaire development to ensure that the questions address the intended issues, that questions are interpreted correctly and consistently, and that responses are quantifiable. The objectives of the questionnaire for alumni of Mississippi State University's College of Veterinary Medicine (MSU-CVM) were twofold: (1) to determine whether graduates were comparable to their US peers in terms of work opportunities and salary, and (2) to evaluate how well the CVM curriculum prepared students to begin their veterinary careers. Demographic categories used by the AVMA and published knowledge, skills, attitudes, and aptitudes of veterinary graduates were used in developing the questions. College-specific questions, such as those relating to student activities and impressions of college resources, were also incorporated. Questionnaires were mailed to participants, who could respond via the World Wide Web. Questionnaire results allowed leaders within the college to determine which aspects of alumni's experiences were exceptionally positive, which needed immediate response, and which might require further study. This article describes the application of principles in developing, administering, and analyzing responses to a questionnaire regarding veterinary education.


Subject(s)
Career Mobility , Education, Veterinary/standards , Educational Measurement , Salaries and Fringe Benefits/statistics & numerical data , Schools, Veterinary/statistics & numerical data , Career Choice , Clinical Competence , Curriculum , Female , Humans , Male , Schools, Veterinary/standards , Self Disclosure , Sex Distribution , Surveys and Questionnaires , United States
16.
Int J STD AIDS ; 28(2): 188-191, 2017 02.
Article in English | MEDLINE | ID: mdl-28120699

ABSTRACT

A retrospective audit of plasma human herpesvirus-8 (HHV-8) viral load testing was performed in three HIV treatment centres over 24 months. Reasons for testing (360 tests) were: symptoms of systemic inflammatory response syndrome (SIRS) (fever, lymphadenopathy and raised inflammatory markers); monitoring in known HHV-8 pathology other than Kaposi sarcoma (KS); investigation of known/suspected KS, and other/no reason. Of patients with multicentric Castleman disease (MCD), 14/16 (88%) had detectable plasma HHV-8, as did 27/45 (60%) with biopsy proven or clinically confirmed KS, and 6/19 (32%) with lymphoma. Neither of the two patients with MCD and no detectable HHV-8 had SIRS symptoms at the time of the test. There was wide variation between centres in the indications prompting HHV-8 testing, with a more conservative approach resulting in a higher proportion of positive results. Measuring plasma HHV-8 in the absence of SIRS symptoms, established HHV-8 disease monitoring, or confirmed/suspected KS is unlikely to yield detectable HHV-8 thus allowing potential cost savings.


Subject(s)
Guideline Adherence , Herpesvirus 8, Human/isolation & purification , RNA, Viral/blood , Viral Load , Castleman Disease/blood , Castleman Disease/epidemiology , Herpesvirus 8, Human/genetics , Humans , Medical Audit , Polymerase Chain Reaction/methods , Systemic Inflammatory Response Syndrome/epidemiology , Viral Load/standards
17.
Arch Dis Child Fetal Neonatal Ed ; 91(3): F166-8, 2006 May.
Article in English | MEDLINE | ID: mdl-16428355

ABSTRACT

BACKGROUND: Screening is necessary for infants at risk of retinopathy of prematurity. Despite local anaesthetic drops, infants find eye examinations distressing, displaying behavioural and physiological changes indicating acute pain. Oral sucrose and non-nutritive sucking reduce pain responses associated with invasive procedures. OBJECTIVE: To evaluate the use of oral sucrose and/or pacifier for reducing pain responses during eye examinations. METHODS: Forty infants <32 weeks gestation or <1500 g birth weight, in two neonatal units, were randomised to one of four interventions administered two minutes before their first screening examination: 1 ml sterile water as placebo (group 1, n = 10), 1 ml 33% sucrose solution (group 2, n = 10), 1 ml sterile water with pacifier (group 3, n = 9), or 1 ml 33% sucrose solution with pacifier (group 4, n = 11). Examinations were videotaped. Two observers, blind to the intervention, assessed recordings. Pain responses were scored using the premature infant pain profile (PIPP). RESULTS: The groups were similar in gestation, birth weight, and age at examination. Mean PIPP scores were 15.3, 14.3, 12.3, and 12.1 for groups 1, 2, 3, and 4 respectively. Analysis of variance showed a significant difference in PIPP score between groups (p = 0.023). Infants randomised to pacifiers scored lower than those without pacifiers (p = 0.003). There was no difference between groups receiving sucrose and those receiving water (p = 0.321). CONCLUSIONS: Non-nutritive sucking reduced distress responses in infants undergoing screening for retinopathy of prematurity. The difference in response was large enough to be detected by a validated assessment tool. No synergistic effect of sucrose and pacifier was apparent in this group.


Subject(s)
Analgesics/administration & dosage , Pain/prevention & control , Retinopathy of Prematurity/diagnosis , Sucrose/administration & dosage , Administration, Oral , Analgesia/methods , Humans , Infant , Infant, Newborn , Neonatal Screening , Pacifiers , Physical Examination/adverse effects , Sucking Behavior , Treatment Outcome
18.
Br J Ophthalmol ; 89(8): 939-41, 2005 Aug.
Article in English | MEDLINE | ID: mdl-16024838

ABSTRACT

AIMS: To document and discuss the long term outcome of a new ophthalmic treatment for laryngo-onycho-cutaneous (LOC) syndrome. METHODS: Two children were treated by excision of ocular granulation tissue and ocular surface rehabilitation with frozen amniotic membrane (AM). The clinical course of both patients was followed and documented at 2 years and 4 years following the surgery. RESULTS: Patient 1 demonstrated limited recurrence of granulation tissue at 10 months. After 36 months, re-growth of granulation and scar tissue required a further three subsequent operations to the right eye in an attempt to keep the optical axis clear. 4 years postoperatively, neither eye has a clear visual axis. In contrast similar surgery for the right eye of patient 2 has been highly successful, with only very limited non-progressive recurrence after 2 years of follow up. The operation to the left eye has been similarly effective although the follow up is only 6 months. CONCLUSIONS: Ocular surface rehabilitation with AM is the first partially effective treatment for the eye complications of LOC syndrome. The surprising benefit from AM may stem from the primary pathology of the condition. LOC syndrome is caused by a genetic defect resulting in an unusual N-terminal deletion of the alpha3a chain of the basement membrane protein laminin 5. One mechanism through which AM transplantation may act to reduce ocular scarring in this disease is to supplement the abnormal secreted laminin 5 with healthy transplanted laminin. Despite its initial efficacy one episode of AM treatment does not guarantee long term control of the scarring process and variations in AM graft efficacy may be related to other complicating factors such as limbal stem cell deficiency or severity of the initial scarring process.


Subject(s)
Amnion/transplantation , Cicatrix/surgery , Conjunctival Diseases/surgery , Corneal Diseases/surgery , Child , Female , Follow-Up Studies , Granulation Tissue/surgery , Humans , Male , Syndrome
19.
Methods Inf Med ; 54(6): 479-87, 2015.
Article in English | MEDLINE | ID: mdl-26395036

ABSTRACT

OBJECTIVES: In this paper we aim to characterise the critical mass of linked data, methods and expertise required for health systems to adapt to the needs of the populations they serve - more recently known as learning health systems. The objectives are to: 1) identify opportunities to combine separate uses of common data sources in order to reduce duplication of data processing and improve information quality; 2) identify challenges in scaling-up the reuse of health data sufficiently to support health system learning. METHODS: The challenges and opportunities were identified through a series of e-health stakeholder consultations and workshops in Northern England from 2011 to 2014. From 2013 the concepts presented here have been refined through feedback to collaborators, including patient/citizen representatives, in a regional health informatics research network (www.herc.ac.uk). RESULTS: Health systems typically have separate information pipelines for: 1) commissioning services; 2) auditing service performance; 3) managing finances; 4) monitoring public health; and 5) research. These pipelines share common data sources but usually duplicate data extraction, aggregation, cleaning/preparation and analytics. Suboptimal analyses may be performed due to a lack of expertise, which may exist elsewhere in the health system but is fully committed to a different pipeline. Contextual knowledge that is essential for proper data analysis and interpretation may be needed in one pipeline but accessible only in another. The lack of capable health and care intelligence systems for populations can be attributed to a legacy of three flawed assumptions: 1) universality: the generalizability of evidence across populations; 2) time-invariance: the stability of evidence over time; and 3) reducibility: the reduction of evidence into specialised sub-systems that may be recombined. CONCLUSIONS: We conceptualize a population health and care intelligence system capable of supporting health system learning and we put forward a set of maturity tests of progress toward such a system. A factor common to each test is data-action latency; a mature system spawns timely actions proportionate to the information that can be derived from the data, and in doing so creates meaningful measurement about system learning. We illustrate, using future scenarios, some major opportunities to improve health systems by exchanging conventional intelligence pipelines for networked critical masses of data, methods and expertise that minimise data-action latency and ignite system-learning.


Subject(s)
Data Curation/methods , Electronic Health Records/organization & administration , Health Information Systems/organization & administration , Information Dissemination/methods , Information Storage and Retrieval/methods , Medical Record Linkage/methods , Datasets as Topic , Meaningful Use , Models, Organizational , Systems Integration
20.
Int J Med Inform ; 84(11): 933-40, 2015 Nov.
Article in English | MEDLINE | ID: mdl-26342668

ABSTRACT

PURPOSE: To provide an overview of essential elements of good governance of data linkage for health-related research, to consider lessons learned so far and to examine key factors currently impeding the delivery of good governance in this area. Given the considerable hurdles which must be overcome and the changing landscape of health research and data linkage, a principled, proportionate, risk-based approach to governance is advocated. DISCUSSION: In light of the considerable value of data linkage to health and well-being, the United Kingdom aspires to design and deliver good governance in health-related research. A string of projects have been asking: what does good governance look like in data linkage for health research? It is argued here that considerable progress can and must be made in order to develop the UK's contribution to future health and wealth economies, particularly in light of mis-start initiatives such as care.data in NHS England. Discussion centres around lessons learned from previous successful health research initiatives, identifying those governance mechanisms which are essential to achieving good governance. CONCLUSION: This article suggests that a crucial element in any step-increase of research capability will be the adoption of adaptive governance models. These must recognise a range of approaches to delivering safe and effective data linkage, while remaining responsive to public and research user expectations and needs as these shift and change with time and experience. The targets are multiple and constantly moving. There is not--nor should we seek--a single magic bullet in delivering good governance in health research.


Subject(s)
Confidentiality , Electronic Health Records , Ethics, Research , Information Storage and Retrieval , Animals , Confidentiality/ethics , Electronic Health Records/legislation & jurisprudence , Electronic Health Records/standards , Humans , Information Storage and Retrieval/ethics , Information Storage and Retrieval/methods , Informed Consent , Interprofessional Relations , Research , State Medicine , United Kingdom
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