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N-glycosylation in the SERPIN domain of C1-Esterase Inhibitor in hereditary angioedema.
JCI Insight
January 2025
Medicine, Washington University School of Medicine, St. Louis, United States of America.
Hereditary angioedema is an autosomal dominant disorder caused by defects in C1-esterase inhibitor (C1-INH), resulting in poorly controlled activation of the kallikrein-kinin system and bradykinin overproduction. C1-INH is a heavily glycosylated protein in the serine protease inhibitor (SERPIN) family, yet the role of these glycosylation sites remains unclear. To elucidate the functional impact of N-glycosylation in the SERPIN domain of C1-INH, we engineered four sets consisting of 26 variants at or near the N-linked sequon (NXS/T).
View Article and Find Full Text PDFValidating and utilizing dried blood spots for family screening: Screening Programme Providing Outreach for Testing Hereditary Angioedema (SPPOT-HAE).
J Allergy Clin Immunol Glob
February 2025
Division of Rheumatology & Clinical Immunology, Department of Medicine, Queen Mary Hospital, Hong Kong.
Background: Hereditary angioedema (HAE) is a rare genetic disorder with potentially life-threatening consequences, traditionally diagnosed by conventional laboratory methods that can be resource intensive and inconvenient. Incorporating dried blood spot (DBS) tests may be a promising alternative for diagnosing HAE and family screening.
Objective: This study aimed to validate DBS with conventional laboratory assays among confirmed C1 esterase inhibitor (C1-INH) HAE patients and assess the utility of DBS in a Screening Programme Providing Outreach for Testing Hereditary Angioedema (SPPOT-HAE).
Recurrent Hand Oedema and Abdominal Pain.
J Paediatr Child Health
January 2025
Pediatric Allergy Unit, Department of Pediatrics, Unidade Local de Saúde de São João, Porto, Portugal.
Advocacy in Action: International Patient Group Improves Hereditary Angioedema Diagnosis and Care Across the Asia-Pacific.
Clin Exp Allergy
January 2025
Division of Rheumatology and Clinical Immunology, Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China.
This study demonstrates that patient advocacy groups significantly enhance medication availability and improve diagnosis of hereditary angioedema (HAE), particularly in emerging economies within the Asia-Pacific region. This study supports integrating patient advocacy group involvement into management guidelines, emphasising their role in improving access to diagnostics and treatment for HAE.
View Article and Find Full Text PDFThe adolescent experience of hereditary angioedema: a qualitative study of disease burden and treatment experience.
Orphanet J Rare Dis
January 2025
Ionis Pharmaceuticals, Inc, 2855 Gazelle Court, Carlsbad, CA, 92010, USA.
Background: Hereditary angioedema (HAE) is a rare, autosomal dominant disorder causing swelling attacks in various parts of the body, resulting in impacts on health-related quality of life (HRQoL). The symptoms of HAE and its impacts on HRQoL have been well-documented in adults; however, relatively little is known about the experiences of adolescents with HAE. The objective of this study was to use qualitative interviews to investigate how adolescents experience HAE symptoms and how HAE impacts their HRQoL.
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