11 results on '"Alagappan U"'
Search Results
2. Pigmentary mosaicism (checkerboard) of a Beckerʼs naevus: P086
- Author
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Alagappan, U. and Goh, B. K.
- Published
- 2014
3. Cutaneous melioidosis with unusual histological features
- Author
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Yeo, B., primary, Lee, J., additional, Alagappan, U., additional, and Pan, J. Y., additional
- Published
- 2015
- Full Text
- View/download PDF
4. Pigmented Contact Dermatitis Secondary to Benzyl Salicylate
- Author
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Alagappan, U, primary, Tay, Y, additional, and Lim, S, additional
- Published
- 2013
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- View/download PDF
5. Ophthalmic complications of dengue: pathogenesis and prevention
- Author
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Alagappan Uma, Nagarajan Prabhu, and Ponniah Thirumalaikolundusubramanian
- Subjects
Medicine - Published
- 2013
- Full Text
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6. Which glaucoma patients should be monitored at home and exploration of clinician perceptions on home monitoring? a survey of glaucoma specialists in the UK.
- Author
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Alagappan U, Stewart C, Azuara-Blanco A, King AJ, Tatham A, Hernández R, MacLennan G, Shotton D, Forrest M, and Gillies K
- Subjects
- Humans, United Kingdom, Surveys and Questionnaires, Female, Male, Intraocular Pressure, Ophthalmologists psychology, Middle Aged, Monitoring, Ambulatory methods, Home Care Services, Glaucoma diagnosis, Attitude of Health Personnel
- Abstract
Objectives: To identify suitable patients for glaucoma home monitoring and explore clinicians' perceptions of the possible benefits and risks of home monitoring within the National Health Service., Design: An online survey composed of open-ended and closed-ended questions., Setting: Secondary care., Participants: Glaucoma specialists registered with the UK and Eire Glaucoma Society., Outcome Measures: Agreement with clinical scenarios., Results: The estimated response rate was 68% (n=49). Of 49 participants, 92% (n=45) were consultant ophthalmologists and 71% (n=35) had over 10-year experience. There was a poor agreement regarding an ideal glaucoma patient for home monitoring, with only one scenario achieving over 60% agreement. Most participants believed that home monitoring would be most suitable for low-risk scenarios, rather than high-risk, due to fear of missing progression. In relation to acceptability, key facilitators included the potential to increase healthcare capacity and promote patient safety. However, low clinician trust in equipment reliability and fear of patient harm were reported as concerns., Conclusions: There was no clear consensus on which patients would benefit most from glaucoma home monitoring. While many clinicians believe home monitoring may enhance healthcare, there were also many concerns about the technologies themselves. Further work to address clinician concerns is warranted., Research Registry Registration Number: 6213., Competing Interests: Competing interests: AJK has received funding from the pharmaceutical industry for contributions to Advisory Boards and conference organisers for attendance/speaking at conferences. AJK is also chairman/trustee of Glaucoma UK. AT has received funding from the pharmaceutical industry for contributions to consulting, lectures and/or presentations, and advisory board participation. AT is also a member of the European Glaucoma Society executive committee., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY. Published by BMJ.)
- Published
- 2024
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7. Feasibility of in-home monitoring for people with glaucoma: the I-TRAC mixed-methods study.
- Author
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Stewart C, Wu H, Alagappan U, Azuara-Blanco A, King AJ, Tatham AJ, Hernández R, Lowe B, Shotton D, Appiah N, Coffey T, Vadiveloo T, MacLennan G, and Gillies K
- Subjects
- Humans, Female, Male, Aged, United Kingdom, Middle Aged, Intraocular Pressure, Reproducibility of Results, Technology Assessment, Biomedical, Self Care, Home Care Services, State Medicine, Aged, 80 and over, Glaucoma, Feasibility Studies, Cost-Benefit Analysis
- Abstract
Background: Glaucoma is a chronic disease of the optic nerve and a leading cause of severe visual loss in the UK. Once patients have been diagnosed, they need regular monitoring at hospital eye services. Recent advances in technology mean patients with glaucoma can now monitor their disease at home. This could be more convenient for patients and potentially reduce costs and increase capacity for the NHS. However, it is uncertain whether self-monitoring would be acceptable or possible for patients with glaucoma., Objectives: The objectives were to: identify which patients are most appropriate for home monitoring; understand views of key stakeholders (patients, clinicians, researchers) on whether home glaucoma monitoring is feasible and acceptable; develop a conceptual framework for the economic evaluation of home glaucoma monitoring; and explore the need for and provide evidence on the design of a future study to evaluate the clinical and cost-effectiveness of digital technologies for home monitoring of glaucoma., Design: In-home Tracking of glaucoma: Reliability, Acceptability, and Cost (I-TRAC) was a multiphase mixed-methods feasibility study with key components informed by theoretical and conceptual frameworks., Setting: Expert glaucoma specialists in the UK recruited through professional glaucoma societies; study site staff and patient participants recruited through three UK hospital eye services (England, Scotland, Northern Ireland); and UK research teams recruited though existing networks., Intervention: Home tonometer that measures intraocular pressure and a tablet computer with a visual function application. Patients were asked to use the technology weekly for 12 weeks., Results: Forty-two patients were recruited. Retention and completion of follow-up procedures was successful, with 95% ( n = 40) completing the 3-month follow-up clinic visits. Adherence to the interventions was generally high [adherence to both devices (i.e. ≥ 80% adherence) was 55%]. Overall, patients and healthcare professionals were cautiously optimistic about the acceptability of digital technologies for home monitoring of patients with glaucoma. While most clinicians were supportive of the potential advantages glaucoma home monitoring could offer, concerns about the technologies (e.g. reliability and potential to miss disease progression) and how they would fit into routine care need to be addressed. Additionally, clarity is required on defining the ideal population for this intervention. Plans for how to evaluate value for money in a future study were also identified. However, the study also highlighted several unknowns relating to core components of a future evaluative study that require addressing before progression to a definitive effectiveness trial., Limitations: The main limitation relates to our sample and its generalisability, for example, the over-representation of educated persons of white ethnicity who were generally experienced with technology and research motivated., Conclusions: The In-home Tracking of glaucoma: Reliability, Acceptability, and Cost study has demonstrated 'cautious optimism' when considering patients' and healthcare professionals' views on the acceptability of digital technologies for home monitoring of patients with glaucoma. However, the study also highlighted several unknowns relating to the research question and design of a future evaluative study that require addressing before progression to a randomised controlled trial., Future Work: Further research is required to determine the appropriate population (i.e. low vs. high risk of progression) and further refine the intervention components and delivery for planning of future evaluation studies., Study Registration: This study is registered as Research Registry #6213., Funding: This award was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: NIHR129248) and is published in full in Health Technology Assessment ; Vol. 28, No. 44. See the NIHR Funding and Awards website for further award information.
- Published
- 2024
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8. Self-induced panniculitis in adolescence: Three cases and review of the literature.
- Author
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Lie CJL, Marimuttu VJ, Wee LWY, Ho VPY, Gan EY, Alagappan U, Wong SMY, and Koh MJA
- Subjects
- Humans, Adolescent, Panniculitis diagnosis, Panniculitis etiology, Panniculitis pathology, Mental Disorders, Fat Necrosis complications
- Abstract
Self-induced trauma is a rare cause of panniculitis in adolescents and may be associated with undiagnosed underlying psychological conditions. The condition often poses a diagnostic challenge as patients usually present with non-specific signs and symptoms, and often a concealed history of self-induced trauma. Here, we present three adolescent patients with self-induced traumatic panniculitis. All three patients were repeatedly admitted with non-specific cutaneous lesions as well as multiple somatic complaints. After extensive evaluation to exclude organic causes, psychiatric assessment eventually revealed underlying psychosomatic disorders as a cause of the self-induced trauma., (© 2022 Wiley Periodicals LLC.)
- Published
- 2023
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9. Moisturisers from birth in at-risk infants of atopic dermatitis - a pragmatic randomised controlled trial.
- Author
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Ng PSM, Wee LWY, Ho VPY, Tan WC, Bishnoi P, Alagappan U, Wong SMY, Gan EY, Quek BH, Shen L, Su B, Common JE, and Koh MJA
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- Age Factors, Cohort Studies, Dermatitis, Atopic diagnosis, Drug Combinations, Female, Humans, Incidence, Infant, Infant, Newborn, Male, Risk Factors, Dermatitis, Atopic epidemiology, Dermatitis, Atopic prevention & control, Dermatologic Agents administration & dosage, Ointments administration & dosage, Propylene Glycols administration & dosage, Skin Cream administration & dosage, Sodium Dodecyl Sulfate administration & dosage
- Abstract
Background: Atopic dermatitis (AD) is a common, chronic dermatosis, with onset of disease often manifesting in early infancy. Past studies evaluating the early use of moisturisers in the prevention of AD had mixed results., Objectives: To compare the incidence of moderate or severe AD and total incidence of AD in a cohort of 'at-risk' infants treated with moisturisers from the first 2 weeks of life, to a similar group without moisturisers., Methods: We performed a single-centre, prospective, parallel-group, randomised study in infants with at least 2 first-degree relatives with atopy. Subjects were randomised into either a treatment group with moisturisers or a control group without moisturisers. Participants were assessed at 2, 6, and 12 months for AD and if present, the severity was assessed using SCORAD index. We also compared the overall incidence of AD, trans-epidermal water loss (TEWL), stratum corneum (SC) hydration, pH, and incidence of food and environmental sensitisation and allergies between both groups. Genotyping for loss-of-functions mutations in the FLG gene was conducted., Results: A total of 200 subjects were recruited, with 100 subjects in each arm. There was no significant difference in incidence of moderate or severe AD, and total incidence of AD at 12 months between the treatment and control groups. There was a lower mean SCORAD in the treatment group than in the control group, but no significant difference in TEWL, SC hydration, and skin pH. No significant side-effects were reported., Conclusions: The early use of moisturisers in 'at-risk' infants does not reduce the incidence of moderate-to-severe AD and overall incidence of AD in infancy., (© 2021 The Authors. Australasian Journal of Dermatology published by John Wiley & Sons Australia, Ltd on behalf of Australasian College of Dermatologists.)
- Published
- 2021
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10. Factors influencing quality of life in children with atopic dermatitis and their caregivers: a cross-sectional study.
- Author
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Xu X, van Galen LS, Koh MJA, Bajpai R, Thng S, Yew YW, Ho VPY, Alagappan U, Järbrink KSA, and Car J
- Subjects
- Adolescent, Adult, Child, Child, Preschool, Cross-Sectional Studies, Dermatitis, Atopic physiopathology, Female, Humans, Infant, Male, Severity of Illness Index, Sleep, Surveys and Questionnaires, Young Adult, Caregivers psychology, Dermatitis, Atopic psychology, Quality of Life
- Abstract
Better understanding of atopic dermatitis' effect on quality of life could enhance current management and therapeutic strategies. Studies investigating factors related to the health-related quality of life (HRQOL) of children with atopic dermatitis and their caregivers are limited. This cross-sectional study included 559 children (<16 years) with atopic dermatitis and their caregivers. Disease severity was associated with infants' HRQOL (moderate: IRR: 1.42, 95% CI 1.20-1.67; severe: IRR: 1.72, 95% CI 1.32-2.24). Age and disease severity were associated with children's HRQOL (age: IRR: 0.99, 95% CI 0.98-1.00; moderate: IRR: 1.08, 95% CI 1.02-1.14). Quality of life subdomains itching/scratching, emotional distress and sleep disturbance were most reported and increased with higher disease severity. Both caregivers' mental and physical health were negatively affected by children's HRQOL (physical: IRR: 0.99, 95% CI 0.99-1.00; mental: IRR: 0.98, 95% CI 0.97-0.99). Sociodemographic characteristics (gender, ethnicity, educational attainment of carers, number of children) did not demonstrate significance in children's HRQOL model. In conclusion, current atopic dermatitis diagnostics and treatment have to be extended to the factors influencing both children' as their caregivers' quality of life and adapting management accordingly. Itching/scratching, emotional distress and sleep disturbance deserve attention. Sociodemographic characteristics in children's HRQOL models also merit attention in further research.
- Published
- 2019
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11. Ferrochelatase gene mutation in Singapore and a novel frame-shift mutation in an Asian boy with erythropoietic protoporphyria.
- Author
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Alagappan U, Pramono ZA, and Chong WS
- Subjects
- Case-Control Studies, Child, DNA Mutational Analysis, Frameshift Mutation, Gene Frequency, Humans, Male, Singapore, Asian People genetics, Ferrochelatase genetics, Protoporphyria, Erythropoietic genetics
- Abstract
Background: Erythropoietic protoporphyria (EPP) is a rare inherited disorder of heme biosynthesis caused by decreased activity of the enzyme ferrochelatase (FECH ). The frequency of the hypomorphic c.333-48C allele in a population directly contributes to the prevalence of EPP in the same population. This study sought to identify the molecular basis of EPP in a Chinese patient from Singapore and the c.333-48C allele frequency among the Chinese population in Singapore., Materials and Methods: FECH gene was screened for mutation in the patient's DNA sample by polymerase chain reaction amplification and DNA sequencing. To validate the identified mutation, the FECH region harboring the mutation was screened in DNA samples from all healthy controls. One patient and 46 ethnically matched healthy controls were included in the study., Results: A novel c.474dupC which leads to a frameshift and premature stop codon was identified in one allele, while the other allele showed to carry c.333-48C and c.337C>T variants in the patient's FECH. The frequency of the c.333-48C hypomorphic allele is 27% among Chinese population in Singapore., Conclusions: c.474dupC in one allele trans to hypomorphic c.333-48C and c.337C>T allele in FECH gene may be the underlying cause of the clinical EPP of the studied patient. The FECH hypomorphic c.333-48C allele frequency in Singapore is lower than the Han Chinese (41.3%) and Japanese (43%) populations but nearly the same as the Southeast Asian (31%) population and higher than the European (2.7-11%) population., (© 2016 The International Society of Dermatology.)
- Published
- 2017
- Full Text
- View/download PDF
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