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Maurer M, Magerl M, Ansotegui I, Aygören-Pürsün E, Betschel S, Bork K, Bowen T, Boysen HB, Farkas H, Grumach AS, Hide M, Katelaris C, Lockey R, Longhurst H, Lumry WR, Martinez-Saguer I, Moldovan D, Nast A, Pawankar R, Potter P, Riedl M, Ritchie B, Rosenwasser L, Sánchez-Borges M, Zhi Y, Zuraw B, Craig T. [Not Available]. ARERUGI = [ALLERGY] 2023; 72:158-183. [PMID: 36928049 DOI: 10.15036/arerugi.72.158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Affiliation(s)
- M Maurer
- Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin
| | - M Magerl
- Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin
| | - I Ansotegui
- Department of Allergy and Immunology, Hospital Quironsalud Bizkaia
| | - E Aygören-Pürsün
- Center for Children and Adolescents, University Hospital Frankfurt
| | - S Betschel
- Division of Clinical Immunology and Allergy, St. Michael's Hospital, University of Toronto
| | - K Bork
- Department of Dermatology, Johannes Gutenberg University Mainz
| | - T Bowen
- Department of Medicine and Pediatrics, University of Calgary
| | | | - H Farkas
- Hungarian Angioedema Center, 3rd Department of Internal Medicine, Semmelweis University
| | - A S Grumach
- Clinical Immunology, Faculdade de Medicina ABC
| | - M Hide
- Department of Dermatology, Hiroshima University
| | - C Katelaris
- Department of Medicine, Campbelltown Hospital and Western Sydney University
| | - R Lockey
- Department of Internal Medicine, University of South Florida Morsani College of Medicine
| | - H Longhurst
- Department of Clinical Biochemistry and Immunology, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust
| | - W R Lumry
- Department of Internal Medicine, Allergy/Immunology Division, Southwestern Medical School, University of Texas
| | | | | | - A Nast
- Berlin Institute of Health, Department of Dermatology, Venereology und Allergy, Division of Evidence based Medicine (dEBM), Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Charité-Universitätsmedizin Berlin
| | - R Pawankar
- Department of Pediatrics, Nippon Medical School
| | - P Potter
- Department of Medicine, University of Cape Town
| | - M Riedl
- Department of Medicine, University of California-San Diego
| | - B Ritchie
- Division of Hematology, University of Alberta
| | - L Rosenwasser
- Allergy and Immunology Department, University of Missouri at Kansas City School of Medicine
| | - M Sánchez-Borges
- Allergy and Clinical Immunology Department, Centro Medico Docente La Trinidad
| | - Y Zhi
- Department of Allergy, Peking Union Medical College Hospital and Chinese Academy of Medical Sciences
| | - B Zuraw
- Department of Medicine, University of California-San Diego
- San Diego VA Healthcare
| | - T Craig
- Department of Medicine and Pediatrics, Penn State University
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Maurer M, Magerl M, Betschel S, Aberer W, Ansotegui IJ, Aygören-Pürsün E, Banerji A, Bara NA, Boccon-Gibod I, Bork K, Bouillet L, Boysen HB, Brodszki N, Busse PJ, Bygum A, Caballero T, Cancian M, Castaldo A, Cohn DM, Csuka D, Farkas H, Gompels M, Gower R, Grumach AS, Guidos-Fogelbach G, Hide M, Kang HR, Kaplan AP, Katelaris C, Kiani-Alikhan S, Lei WT, Lockey R, Longhurst H, Lumry WR, MacGinnitie A, Malbran A, Saguer IM, Matta JJ, Nast A, Nguyen D, Nieto-Martinez SA, Pawankar R, Peter J, Porebski G, Prior N, Reshef A, Riedl M, Ritchie B, Sheikh FR, Smith WB, Spaeth PJ, Stobiecki M, Toubi E, Varga LA, Weller K, Zanichelli A, Zhi Y, Zuraw B, Craig T. [Not Available]. ARERUGI = [ALLERGY] 2023; 72:237-272. [PMID: 37225467 DOI: 10.15036/arerugi.72.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Affiliation(s)
- M Maurer
- Institute of Allergology, Charité-Universitätsmedizin, Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology
| | - M Magerl
- Institute of Allergology, Charité-Universitätsmedizin, Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology
| | | | - W Aberer
- Department of Dermatology, Medical University of Graz
| | - I J Ansotegui
- Department of Allergy & Immunology, Hospital Quironsalud Bizkaia
| | - E Aygören-Pürsün
- Center for Children and Adolescents, University Hospital Frankfurt
| | - A Banerji
- Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital
| | - N A Bara
- Romanian Hereditary Angioedema Expertise Centre, Mediquest Clinical Research Center
| | - I Boccon-Gibod
- National Reference Center for Angioedema (CREAK), Angioedema Center of Reference and Excellence (ACARE), Grenoble Alpes University Hospital
| | - K Bork
- Department of Dermatology, University Medical Center, Johannes Gutenberg University
| | - L Bouillet
- National Reference Center for Angioedema (CREAK), Angioedema Center of Reference and Excellence (ACARE), Grenoble Alpes University Hospital
| | | | - N Brodszki
- Department of Pediatric Immunology, Childrens Hospital, Skåne University Hospital
| | - P J Busse
- Icahn School of Medicine at Mount Sinai
| | - A Bygum
- Clinical Institute, University of Southern Denmark
- Department of Clinical Genetics, Odense University Hospital
| | - T Caballero
- Allergy Department, Hospital Universitario La Paz
| | - M Cancian
- Department of Systems Medicine, University Hospital of Padua
| | | | - D M Cohn
- Department of Vascular Medicine, Amsterdam UMC/University of Amsterdam
| | - D Csuka
- Department of Internal Medicine and Haematology, Hungarian Angioedema Center of Reference and Excellence, Semmelweis University
| | - H Farkas
- Department of Internal Medicine and Haematology, Hungarian Angioedema Center of Reference and Excellence, Semmelweis University
| | - M Gompels
- Clinical Immunology, North Bristol NHS Trust
| | - R Gower
- Marycliff Clinical Research, Principle Research Solutions
| | - A S Grumach
- Clinical Immunology, Centro Universitario FMABC
| | | | - M Hide
- Department of Dermatology, Hiroshima Citizens Hospital
- Department of Dermatology, Hiroshima University
| | - H R Kang
- Department of Internal Medicine, Seoul National University College of Medicine
| | - A P Kaplan
- Division of Pulmonary, Critical Care, Allergy and Immunology, Medical University of South Carolina
| | - C Katelaris
- Department of Medicine, Campbelltown Hospital and Western Sydney University
| | | | - W T Lei
- Division of Allergy, Immunology, and Rheumatology, Department of Pediatrics, Mackay Memorial Hospital
| | - R Lockey
- Division of Allergy and Immunology, Department of Internal Medicine, Morsani College of Medicine, University of South Florida
| | - H Longhurst
- Department of Immunology, Auckland District Health Board and Department of Medicine, University of Auckland
| | - W R Lumry
- Internal Medicine, Allergy Division, University of Texas Health Science Center
| | - A MacGinnitie
- Division of Immunology, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School
| | - A Malbran
- Unidad de Alergia, Asma e Inmunología Clínica
| | - I M Saguer
- Pediatrics, Haemophilia Centre Rhine Main (HZRM)
| | - J J Matta
- H. Especialidades C.M.N.SXXI, I.M.S.S
| | - A Nast
- Department of Dermatology, Venereology and Allergology, Division of Evidence-Based Medicine Charité-Universitätsmedizin Berlin, corporate member of Free University of Berlin, Humboldt University of Berlin, and Berlin Institute of Health
| | - D Nguyen
- Respiratory, Allergy and Clinical Immunology Unit, Internal Medicine Department, Vinmec Healthcare System, College of Health Sciences, VinUniversity
| | | | - R Pawankar
- Department of Pediatrics, Nippon Medical School
| | - J Peter
- Division of Allergy and Clinical Immunology, University of Cape Town
- Allergy and Immunology Unit, University of Cape Town Lung Institute
| | - G Porebski
- Department of Clinical and Environmental Allergology, Jagiellonian University Medical College
| | - N Prior
- Allergy, Hospital Universitario Severo Ochoa
| | - A Reshef
- Angioderma Center, Barzilai University Medical Center
| | - M Riedl
- Division of Rheumatology, Allergy and Immunology, University of California San Diego
| | - B Ritchie
- Departments of Medicine and Medical Oncology, University of Alberta
| | - F R Sheikh
- Section of Adult Allergy & Immunology, Department of Medicine, King Faisal Specialist Hospital & Research Centre
| | - W B Smith
- Clinical Immunology and Allergy, Royal Adelaide Hospital
| | - P J Spaeth
- Institute of Pharmacology, University of Bern
| | - M Stobiecki
- Department of Clinical and Environmental Allergology, Jagiellonian University Medical College
| | - E Toubi
- Division of Allergy and Clinical Immunology, Bnai Zion Medical Center, Affiliated with Rappaport Faculty of Medicine, Technion-Israel Institute of Technology
| | - L A Varga
- Department of Internal Medicine and Haematology, Hungarian Angioedema Center of Reference and Excellence, Semmelweis University
| | - K Weller
- Institute of Allergology, Charité-Universitätsmedizin, Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology
| | - A Zanichelli
- Department of Internal Medicine, ASST Fatebenefratelli Sacco, Ospedale Luigi Sacco-University of Milan
| | - Y Zhi
- Department of Allergy and Clinical Immunology, Bejing Union Medical College Hospital & Chinese Academy of Medical Sciences
| | - B Zuraw
- University of California, San Diego
| | - T Craig
- Departments of Medicine and Pediatrics, Penn State University
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Banerji A, Bernstein JA, Johnston DT, Lumry WR, Magerl M, Maurer M, Martinez‐Saguer I, Zanichelli A, Hao J, Inhaber N, Yu M, Riedl MA, Hébert J, Ritchie B, Sussman G, Yang W, Aygören‐Pürsün E, Magerl M, Martinez‐Saguer I, Staubach P, Cicardi M, Shennak M, Zaragoza‐Urdaz R, Kiani‐Alikhan S, Anderson J, Banerji A, Baptist A, Bernstein J, Busse P, Craig T, Davis‐Lorton M, Gierer S, Gower R, Harris D, Jacobs J, Johnston D, Li H, Lockey R, Lugar P, Lumry W, Manning M, McNeil D, Melamed I, Otto W, Rehman S, Riedl M, Schwartz L, Shapiro R, Sher E, Smith A, Soteres D, Tachdjian R, Wedner H, Weinstein M, Zafra H. Long-term prevention of hereditary angioedema attacks with lanadelumab: The HELP OLE Study. Allergy 2022; 77:979-990. [PMID: 34287942 PMCID: PMC9292251 DOI: 10.1111/all.15011] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/06/2021] [Accepted: 06/28/2021] [Indexed: 02/06/2023]
Abstract
Background The aim was to evaluate long‐term effectiveness and safety of lanadelumab in patients ≥12 y old with hereditary angioedema (HAE) 1/2 (NCT02741596). Methods Rollover patients completing the HELP Study and continuing into HELP OLE received one lanadelumab 300 mg dose until first attack (dose‐and‐wait period), then 300 mg q2wks (regular dosing stage). Nonrollovers (newly enrolled) received lanadelumab 300 mg q2wks from day 0. Baseline attack rate for rollovers: ≥1 attack/4 weeks (based on run‐in period attack rate during HELP Study); for nonrollovers: historical attack rate ≥1 attack/12 weeks. The planned treatment period was 33 months. Results 212 patients participated (109 rollovers, 103 nonrollovers); 81.6% completed ≥30 months on study (mean [SD], 29.6 [8.2] months). Lanadelumab markedly reduced mean HAE attack rate (reduction vs baseline: 87.4% overall). Patients were attack free for a mean of 97.7% of days during treatment; 81.8% and 68.9% of patients were attack free for ≥6 and ≥12 months, respectively. Angioedema Quality‐of‐Life total and domain scores improved from day 0 to end of study. Treatment‐emergent adverse events (TEAEs) (excluding HAE attacks) were reported by 97.2% of patients; most commonly injection site pain (47.2%) and viral upper respiratory tract infection (42.0%). Treatment‐related TEAEs were reported by 54.7% of patients. Most injection site reactions resolved within 1 hour (70.2%) or 1 day (92.6%). Six (2.8%) patients discontinued due to TEAEs. No treatment‐related serious TEAEs or deaths were reported. Eleven treatment‐related TEAEs of special interest were reported by seven (3.3%) patients. Conclusion Lanadelumab demonstrated sustained efficacy and acceptable tolerability with long‐term use in HAE patients.
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Affiliation(s)
- Aleena Banerji
- Division of Rheumatology, Allergy and Immunology Department of Medicine Massachusetts General Hospital Harvard Medical School Boston Massachusetts USA
| | - Jonathan A. Bernstein
- Division of Immunology/Allergy Section Department of Internal Medicine University of Cincinnati, and Bernstein Clinical Research Center Cincinnati Ohio USA
| | | | | | - Markus Magerl
- Dermatological Allergology Allergie‐Centrum‐Charité Department of Dermatology and Allergy Charité–Universitätsmedizin Berlin Berlin Germany
| | - Marcus Maurer
- Dermatological Allergology Allergie‐Centrum‐Charité Department of Dermatology and Allergy Charité–Universitätsmedizin Berlin Berlin Germany
| | | | - Andrea Zanichelli
- Department of Internal Medicine ASST Fatebenefratelli Sacco, Ospedale Luigi Sacco‐University of Milan Milan Italy
| | - James Hao
- Takeda Development Center Americas, Inc. Lexington Massachusetts USA
| | - Neil Inhaber
- Takeda Development Center Americas, Inc. Lexington Massachusetts USA
| | - Ming Yu
- Takeda Development Center Americas, Inc. Lexington Massachusetts USA
| | - Marc A. Riedl
- Division of Rheumatology, Allergy and Immunology University of California San Diego La Jolla California USA
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Lumry WR, Weller K, Magerl M, Banerji A, Longhurst HJ, Riedl MA, Lewis HB, Lu P, Devercelli G, Jain G, Maurer M, Hébert J, Ritchie B, Sussman G, Yang WH, Martinez‐Saguer I, Staubach P, Cicardi M, Shennak M, Zaragoza‐Urdaz RH, Anderson J, Baptist AP, Bernstein JA, Boggs PB, Busse PJ, Craig T, Davis‐Lorton M, Gierer S, Gower RG, Harris D, Hong DI, Jacobs J, Johnston DT, Li HH, Lockey RF, Lugar P, Manning ME, McNeil DL, Melamed I, Mostofi T, Nickel T, Otto WR, Petrov AA, Radojicic C, Rehman SM, Schwartz LB, Shapiro R, Sher E, Smith AM, Soteres D, Tachdjian R, Wedner HJ, Weinstein ME, Zafra H. Impact of lanadelumab on health-related quality of life in patients with hereditary angioedema in the HELP study. Allergy 2021; 76:1188-1198. [PMID: 33258114 PMCID: PMC8247292 DOI: 10.1111/all.14680] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 11/01/2020] [Accepted: 11/14/2020] [Indexed: 01/20/2023]
Abstract
Background An objective of the phase 3 HELP Study was to investigate the effect of lanadelumab on health‐related quality of life (HRQoL) in patients with hereditary angioedema (HAE). Methods Patients with HAE‐1/2 received either lanadelumab 150 mg every 4 weeks (q4wks; n = 28), 300 mg q4wks (n = 29), 300 mg every 2 weeks (q2wks; n = 27), or placebo (n = 41) for 26 weeks (days 0–182). The Angioedema Quality of Life Questionnaire (AE‐QoL) was administered monthly, consisting of four domain (functioning, fatigue/mood, fears/shame, nutrition) and total scores. The generic EQ‐5D‐5L questionnaire was administered on days 0, 98, and 182. Comparisons were made between placebo and (a) all lanadelumab‐treated patients and (b) individual lanadelumab groups for changes in scores (day 0–182) and proportions achieving the minimal clinically important difference (MCID, −6) in AE‐QoL total score. Results Compared with the placebo group, the lanadelumab total group demonstrated significantly greater improvements in AE‐QoL total and domain scores (mean change, −13.0 to −29.3; p < 0.05 for all); the largest improvement was in functioning. A significantly greater proportion of the lanadelumab total group achieved the MCID (70% vs 37%; p = 0.001). The lanadelumab 300 mg q2wks group had the highest proportion (81%; p = 0.001) and was 7.2 times more likely to achieve the MCID than the placebo group. Mean EQ‐5D‐5L scores at day 0 were high in all groups, indicating low impairment, with no significant changes at day 182. Conclusion Patients with HAE‐1/2 experienced significant and clinically meaningful improvements in HRQoL measured by AE‐QoL following lanadelumab treatment in the HELP Study.
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Affiliation(s)
- William R. Lumry
- Allergy Asthma Research Associates Research Center Dallas TX USA
| | - Karsten Weller
- Dermatological Allergology Allergie‐Centrum‐Charité Department of Dermatology and Allergy Charité – Universitätsmedizin Berlin Berlin Germany
| | - Markus Magerl
- Dermatological Allergology Allergie‐Centrum‐Charité Department of Dermatology and Allergy Charité – Universitätsmedizin Berlin Berlin Germany
| | - Aleena Banerji
- Division of Rheumatology, Allergy and Immunology Massachusetts General HospitalHarvard Medical School Boston MA USA
| | - Hilary J. Longhurst
- Addenbrooke’s Hospital Cambridge University Hospitals NHS Foundation TrustCambridge, and University College London Hospitals London UK
| | - Marc A. Riedl
- Division of Rheumatology Allergy & Immunology University of California San Diego La Jolla CA USA
| | | | - Peng Lu
- Takeda Pharmaceutical Company Limited Lexington MA USA
| | | | - Gagan Jain
- Takeda Pharmaceutical Company Limited Lexington MA USA
| | - Marcus Maurer
- Dermatological Allergology Allergie‐Centrum‐Charité Department of Dermatology and Allergy Charité – Universitätsmedizin Berlin Berlin Germany
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Riedl MA, Maurer M, Bernstein JA, Banerji A, Longhurst HJ, Li HH, Lu P, Hao J, Juethner S, Lumry WR, Hébert J, Ritchie B, Sussman G, Yang WH, Escuriola Ettingshausen C, Magerl M, Martinez‐Saguer I, Maurer M, Staubach P, Zimmer S, Cicardi M, Perego F, Wu MA, Zanichelli A, Al‐Ghazawi A, Shennak M, Zaragoza‐Urdaz RH, Ghurye R, Longhurst HJ, Zinser E, Anderson J, Banerji A, Baptist AP, Bernstein JA, Boggs PB, Busse PJ, Christiansen S, Craig T, Davis‐Lorton M, Gierer S, Gower RG, Harris D, Hong DI, Jacobs J, Johnston DT, Levitch ES, Li HH, Lockey RF, Lugar P, Lumry WR, Manning ME, McNeil DL, Melamed I, Mostofi T, Nickel T, Otto WR, Petrov AA, Poarch K, Radojicic C, Rehman SM, Riedl MA, Schwartz LB, Shapiro R, Sher E, Smith AM, Smith TD, Soteres D, Tachdjian R, Wedner HJ, Weinstein ME, Zafra H, Zuraw BL. Lanadelumab demonstrates rapid and sustained prevention of hereditary angioedema attacks. Allergy 2020; 75:2879-2887. [PMID: 32452549 PMCID: PMC7689768 DOI: 10.1111/all.14416] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 04/15/2020] [Accepted: 04/20/2020] [Indexed: 02/06/2023]
Abstract
Background Lanadelumab demonstrated efficacy in preventing hereditary angioedema (HAE) attacks in the phase 3 HELP Study. Objective To assess time to onset of effect and long‐term efficacy of lanadelumab, based on exploratory findings from the HELP Study. Methods Eligible patients with HAE type I/II received lanadelumab 150 mg every 4 weeks (q4wks), 300 mg q4wks, 300 mg q2wks, or placebo. Ad hoc analyses evaluated day 0‐69 findings using a Poisson regression model accounting for overdispersion. Least‐squares mean monthly HAE attack rate for lanadelumab was compared with placebo. Intrapatient comparisons for days 0‐69 versus steady state (days 70‐182) used a paired t test for continuous endpoints or Kappa statistics for categorical endpoints. Results One hundred twenty‐five patients were randomized and treated. During days 0‐69, mean monthly attack rate was significantly lower with lanadelumab (0.41‐0.76) vs placebo (2.04), including attacks requiring acute treatment (0.33‐0.61 vs 1.66) and moderate/severe attacks (0.31‐0.48 vs 1.33, all P ≤ .001). More patients receiving lanadelumab vs placebo were attack free (37.9%‐48.1% vs 7.3%) and responders (85.7%‐100% vs 26.8%). During steady state, the efficacy of lanadelumab vs placebo was similar or improved vs days 0‐69. Intrapatient differences were significant with lanadelumab 300 mg q4wks for select outcomes. Lanadelumab efficacy was durable—HAE attack rate was consistently lower vs placebo, from the first 2 weeks of treatment through study end. Treatment emergent adverse events were comparable during days 0‐69 and 70‐182. Conclusion Protection with lanadelumab started from the first dose and continued throughout the entire study period.
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Affiliation(s)
- Marc A. Riedl
- Division of Rheumatology, Allergy and Immunology University of California, San Diego San Diego CA USA
| | - Marcus Maurer
- Dermatological Allergology Allergie‐Centrum‐Charité Department of Dermatology and Allergy Charité – Universitätsmedizin Berlin Berlin Germany
| | - Jonathan A. Bernstein
- Division of Immunology/Allergy Section Department of Internal Medicine University of Cincinnati Cincinnati OH USA
- Bernstein Clinical Research Center Cincinnati OH USA
| | - Aleena Banerji
- Division of Rheumatology, Allergy and Immunology Department of Medicine Massachusetts General Hospital Harvard Medical School Boston MA USA
| | - Hilary J. Longhurst
- Addenbrooke's Hospital Cambridge University Hospitals NHS Foundation Trust, Cambridge and University College London Hospitals London UK
| | - H. Henry Li
- Institute for Asthma and Allergy, P.C. Chevy Chase MD USA
| | - Peng Lu
- Shire, a Takeda company Lexington MA USA
| | - James Hao
- Shire, a Takeda company Lexington MA USA
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Sikka N, Shu L, Ritchie B, Pourmand A. 297 Virtual Reality-Assisted Pain, Anxiety, and Anger Management in the Emergency Department. Ann Emerg Med 2018. [DOI: 10.1016/j.annemergmed.2018.08.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Riedl MA, Aygören-Pürsün E, Baker J, Farkas H, Anderson J, Bernstein J, Bouillet L, Busse P, Manning M, Magerl M, Gompels M, Huissoon AP, Longhurst H, Lumry W, Ritchie B, Shapiro R, Soteres D, Banerji A, Cancian M, Johnston DT, Craig T, Launay D, Li HH, Liebhaber M, Nickel T, Offenberger J, Rae W, Schrijvers R, Triggiani M, Wedner HJ, Dobo S, Cornpropst M, Clemons D, Fang L, Collis P, Sheridan W, Maurer M. Evaluation of avoralstat, an oral kallikrein inhibitor, in a Phase 3 hereditary angioedema prophylaxis trial: The OPuS-2 study. Allergy 2018; 73:1871-1880. [PMID: 29688579 PMCID: PMC6175137 DOI: 10.1111/all.13466] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2018] [Indexed: 12/02/2022]
Abstract
Background Effective inhibition of plasma kallikrein may have significant benefits for patients with hereditary angioedema due to deficiency of C1 inhibitor (C1‐INH‐HAE) by reducing the frequency of angioedema attacks. Avoralstat is a small molecule inhibitor of plasma kallikrein. This study (OPuS‐2) evaluated the efficacy and safety of prophylactic avoralstat 300 or 500 mg compared with placebo. Methods OPuS‐2 was a Phase 3, multicenter, randomized, double‐blind, placebo‐controlled, parallel‐group study. Subjects were administered avoralstat 300 mg, avoralstat 500 mg, or placebo orally 3 times per day for 12 weeks. The primary efficacy endpoint was the angioedema attack rate based on adjudicator‐confirmed attacks. Results A total of 110 subjects were randomized and dosed. The least squares (LS) mean attack rates per week were 0.589, 0.675, and 0.593 for subjects receiving avoralstat 500 mg, avoralstat 300 mg, and placebo, respectively. Overall, 1 subject in each of the avoralstat groups and no subjects in the placebo group were attack‐free during the 84‐day treatment period. The LS mean duration of all confirmed attacks was 25.4, 29.4, and 31.4 hours for the avoralstat 500 mg, avoralstat 300 mg, and placebo groups, respectively. Using the Angioedema Quality of Life Questionnaire (AE‐QoL), improved QoL was observed for the avoralstat 500 mg group compared with placebo. Avoralstat was generally safe and well tolerated. Conclusions Although this study did not demonstrate efficacy of avoralstat in preventing angioedema attacks in C1‐INH‐HAE, it provided evidence of shortened angioedema episodes and improved QoL in the avoralstat 500 mg treatment group compared with placebo.
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Affiliation(s)
- M. A. Riedl
- Division of Rheumatology; Allergy & Immunology; University of California San Diego; San Diego CA USA
| | - E. Aygören-Pürsün
- Department for Children and Adolescents; University Hospital Frankfurt; Frankfurt Germany
| | - J. Baker
- Baker Allergy Asthma Dermatology Research Center; Portland OR USA
| | - H. Farkas
- 3rd Department of Internal Medicine; Semmelweis University; Budapest Hungary
| | - J. Anderson
- Clinical Research Center of Alabama; Birmingham AL USA
| | - J. A. Bernstein
- Department of Internal Medicine; University of Cincinnati; Cincinnati OH USA
| | - L. Bouillet
- Internal Medicine; National Reference Centre of Angioedema; Grenoble University Hospital; Grenoble France
| | - P. Busse
- Division of Clinical Immunology and Allergy; Department of Medicine; Icahn School of Medicine at Mount Sinai; New York NY USA
| | - M. Manning
- Medical Research of Arizona; Allergy; Asthma & Immunology Associates; Scottsdale AZ USA
| | - M. Magerl
- Dermatology, Venerology and Allergology; Charite - Universitätsmedizin Berlin; Berlin Germany
| | - M. Gompels
- Immunology; North Bristol NHS Trust; Bristol UK
| | - A. P. Huissoon
- Department of Allergy and Immunology; Heartlands Hospital; Birmingham UK
| | - H. Longhurst
- Immunology; Addenbrookes Hospital; Cambridge University Hospitals; Cambridge UK
| | - W. Lumry
- Allergy and Asthma Research Associates Research Center; Dallas TX USA
| | - B. Ritchie
- Division of Hematology; Department of Medicine; University of Alberta; Edmonton AB Canada
| | - R. Shapiro
- Immunology; Midwest Immunology Clinic; Plymouth MN USA
| | - D. Soteres
- Asthma and Allergy Associates PC; Colorado Springs CO USA
| | - A. Banerji
- Division of Rheumatology; Allergy& Immunology; Department of Medicine; Massachusetts General Hospital; Harvard Medical School; Boston MA USA
| | - M. Cancian
- Department of Medicine; University of Padova; Padova Italy
| | | | - T. J. Craig
- Department of Medicine and Pediatrics; Penn State Hershey Allergy Asthma, and Immunology; Hershey PA USA
| | - D. Launay
- Internal Medicine; CHRU Lille; France France
| | - H. H. Li
- Institute for Asthma and Allergy; Chevy Chase MD USA
| | - M. Liebhaber
- Allergy and Immunology; Sansum Clinic; Santa Barbara CA USA
| | - T. Nickel
- Allergy & Immunology; Allergy Clinic of Tulsa; Tulsa OK USA
| | | | - W. Rae
- Allergy & Clinical Immunology; University Hospital Southampton NHS Foundation Trust; Southampton UK
| | - R. Schrijvers
- Laboratory of Clinical Immunology; KU Leuven; Leuven Belgium
| | - M. Triggiani
- Division of Allergy and Clinical Immunology; University of Salerno; Salerno Italy
| | - H. J. Wedner
- Division of Allergy and Immunology; Washington University School of Medicine; St. Louis MO USA
| | - S. Dobo
- Biocryst Pharmaceuticals; Durham NC USA
| | | | | | - L. Fang
- Statistics; PharStat, Inc.; Raleigh NC USA
| | - P. Collis
- Biocryst Pharmaceuticals; Durham NC USA
| | | | - M. Maurer
- Department of Dermatology and Allergy; Charité - Universitätsmedizin Berlin; Berlin Germany
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8
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Heffernan C, Jones L, Ritchie B, Erens B, Chalabi Z, Mays N. Local health and social care responses to implementing the national cold weather plan. J Public Health (Oxf) 2018; 40:461-466. [PMID: 28977541 DOI: 10.1093/pubmed/fdx120] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Indexed: 11/14/2022] Open
Abstract
Background The Cold Weather Plan (CWP) for England was launched by the Department of Health in 2011 to prevent avoidable harm to health by cold weather by enabling individuals to prepare and respond appropriately. This study sought the views of local decision makers involved in the implementation of the CWP in the winter of 2012/13 to establish the effects of the CWP on local planning. It was part of a multi-component independent evaluation of the CWP. Methods Ten LA areas were purposively sampled which varied in level of deprivation and urbanism. Fifty-two semi-structured interviews were held with health and social care managers involved in local planning between November 2012 and May 2013. Results Thematic analysis revealed that the CWP was considered a useful framework to formalize working arrangements between agencies though local leadership varied across localities. There were difficulties in engaging general practitioners, differences in defining vulnerable individuals and a lack of performance monitoring mechanisms. Conclusions The CWP was welcomed by local health and social care managers, and improved proactive winter preparedness. Areas for improvement include better integration with general practice, and targeting resources at socially isolated individuals in cold homes with specific interventions aimed at reducing social isolation and building community resilience.
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Affiliation(s)
- C Heffernan
- Policy Innovation Research Unit (PIRU), Faculty of Public Health & Policy, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London, UK
| | - L Jones
- Department of Applied Health Research, University College London, 1-19 Torrington Place, London, UK
| | - B Ritchie
- Evidence Based Practice Unit, University College London and Anna Freud National Centre for Children and Families, 21 Maresfield Gardens, London, UK
| | - B Erens
- Policy Innovation Research Unit (PIRU), Faculty of Public Health & Policy, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London, UK
| | - Zaid Chalabi
- Department of Social and Environmental Health Research, Faculty of Public Health & Policy, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London, UK
| | - N Mays
- Policy Innovation Research Unit (PIRU), Faculty of Public Health & Policy, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London, UK
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9
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Maurer M, Magerl M, Ansotegui I, Aygören-Pürsün E, Betschel S, Bork K, Bowen T, Balle Boysen H, Farkas H, Grumach AS, Hide M, Katelaris C, Lockey R, Longhurst H, Lumry WR, Martinez-Saguer I, Moldovan D, Nast A, Pawankar R, Potter P, Riedl M, Ritchie B, Rosenwasser L, Sánchez-Borges M, Zhi Y, Zuraw B, Craig T. The international WAO/EAACI guideline for the management of hereditary angioedema-The 2017 revision and update. Allergy 2018; 73:1575-1596. [PMID: 29318628 DOI: 10.1111/all.13384] [Citation(s) in RCA: 298] [Impact Index Per Article: 49.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2017] [Indexed: 12/25/2022]
Abstract
Hereditary Angioedema (HAE) is a rare and disabling disease. Early diagnosis and appropriate therapy are essential. This update and revision of the global guideline for HAE provides up-to-date consensus recommendations for the management of HAE. In the development of this update and revision of the guideline, an international expert panel reviewed the existing evidence and developed 20 recommendations that were discussed, finalized and consented during the guideline consensus conference in June 2016 in Vienna. The final version of this update and revision of the guideline incorporates the contributions of a board of expert reviewers and the endorsing societies. The goal of this guideline update and revision is to provide clinicians and their patients with guidance that will assist them in making rational decisions in the management of HAE with deficient C1-inhibitor (type 1) and HAE with dysfunctional C1-inhibitor (type 2). The key clinical questions covered by these recommendations are: (1) How should HAE-1/2 be defined and classified?, (2) How should HAE-1/2 be diagnosed?, (3) Should HAE-1/2 patients receive prophylactic and/or on-demand treatment and what treatment options should be used?, (4) Should HAE-1/2 management be different for special HAE-1/2 patient groups such as pregnant/lactating women or children?, and (5) Should HAE-1/2 management incorporate self-administration of therapies and patient support measures?
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Affiliation(s)
- M. Maurer
- Department of Dermatology and Allergy; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - M. Magerl
- Department of Dermatology and Allergy; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - I. Ansotegui
- Department of Allergy and Immunology; Hospital Quironsalud Bizkaia; Bilbao Spain
| | - E. Aygören-Pürsün
- Center for Children and Adolescents; University Hospital Frankfurt; Frankfurt Germany
| | - S. Betschel
- Division of Clinical Immunology and Allergy; St. Michael's Hospital; University of Toronto; Toronto ON Canada
| | - K. Bork
- Department of Dermatology; Johannes Gutenberg University Mainz; Mainz Germany
| | - T. Bowen
- Department of Medicine and Pediatrics; University of Calgary; Calgary AB Canada
| | | | - H. Farkas
- Hungarian Angioedema Center; 3rd Department of Internal Medicine; Semmelweis University; Budapest Hungary
| | - A. S. Grumach
- Clinical Immunology; Faculdade de Medicina ABC; São Paulo Brazil
| | - M. Hide
- Department of Dermatology; Hiroshima University; Hiroshima Japan
| | - C. Katelaris
- Department of Medicine; Campbelltown Hospital and Western Sydney University; Sydney NSW Australia
| | - R. Lockey
- Department of Internal Medicine; University of South Florida Morsani College of Medicine; Tampa FL USA
| | - H. Longhurst
- Department of Clinical Biochemistry and Immunology; Addenbrooke's Hospital; Cambridge University Hospitals NHS Foundation Trust; UK
| | - W. R. Lumry
- Department of Internal Medicine; Allergy/Immunology Division; Southwestern Medical School; University of Texas; Dallas TX USA
| | | | - D. Moldovan
- University of Medicine and Pharmacy; Tîrgu Mures Romania
| | - A. Nast
- Berlin Institute of Health; Department of Dermatology, Venereology und Allergy; Division of Evidence based Medicine (dEBM); Corporate Member of Freie Universität Berlin; Humboldt-Universität zu Berlin; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - R. Pawankar
- Department of Pediatrics; Nippon Medical School; Tokyo Japan
| | - P. Potter
- Department of Medicine; University of Cape Town; Cape Town South Africa
| | - M. Riedl
- Department of Medicine; University of California-San Diego; La Jolla CA USA
| | - B. Ritchie
- Division of Hematology; University of Alberta; Edmonton AB Canada
| | - L. Rosenwasser
- Allergy and Immunology Department; University of Missouri at Kansas City School of Medicine; Kansas City MO USA
| | - M. Sánchez-Borges
- Allergy and Clinical Immunology Department; Centro Medico Docente La Trinidad; Caracas Venezuela
| | - Y. Zhi
- Department of Allergy; Peking Union Medical College Hospital and Chinese Academy of Medical Sciences; Beijing China
| | - B. Zuraw
- Department of Medicine; University of California-San Diego; La Jolla CA USA
- San Diego VA Healthcare; San Diego CA USA
| | - T. Craig
- Department of Medicine and Pediatrics; Penn State University; Hershey PA USA
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10
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Walker I, Teitel J, Poon MC, Ritchie B, Akabutu J, Sinclair GD, Pai M, Wu JWY, Reddy S, Carter C, Growe G, Lillicrap D, Lam M, Blajchman MA, Lee D. Effect of the Factor V Leiden Mutation on the Clinical Expression of Severe Hemophilia A. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1613824] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryTo determine whether the factor V Leiden mutation is associated with decreased bleeding in individuals with severe hemophilia A, factor concentrate utilization, maximum annual number of bleeding episodes, and the prevalence of hemophilic arthropathy between carriers and non-carriers of the factor V Leiden mutation were compared. Heterozygosity for the factor V Leiden mutation was found in 6 of 137 subjects (4.4%). Carriers of the factor V Leiden mutation utilized less factor concentrate (geometric mean: 310 vs. 1185 units/kg/year) and had fewer bleeding episodes than non-carriers (proportion with 10 or fewer bleeding episodes in their worst year: 50 vs. 11%). However, the factor V Leiden mutation was not associated with the absence of arthropathy. The intron 22 inversion mutation of the factor VIII gene was tested for in a subgroup of 80 subjects, but it was not found to be a significant variable for any of the bleeding endpoints. The results of this small study are consistent with the hypothesis that the factor V Leiden mutation imparts a protective effect; however, a larger confirmatory study in which the factor VIII molecular defects can be controlled for is needed. Furthermore, most severe hemophiliacs who used fewer than 200 units/kg/year of factor concentrate or who had experienced 10 or fewer bleeding episodes per year did not carry the factor V Leiden mutation, suggesting that the proportion of severe hemophiliacs whose mild clinical course can be attributed to the factor V Leiden mutation is small.
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11
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St-Louis J, Urajnik DJ, Ménard F, Cloutier S, Klaassen RJ, Ritchie B, Rivard GE, Warner M, Blanchette V, Young NL. Generic and disease-specific quality of life among youth and young men with Hemophilia in Canada. BMC Hematol 2016; 16:13. [PMID: 27158500 PMCID: PMC4858890 DOI: 10.1186/s12878-016-0052-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 04/27/2016] [Indexed: 11/20/2022]
Abstract
Background This study was undertaken to explore the longitudinal patterns of health-related quality of life (HRQoL) among youth and young adults with Hemophilia A (HA) over a 3-year period. This report presents the baseline characteristics of the study cohort. Methods Males, 14 to 29 years of age, with predominantly severe HA were recruited from six treatment centres in Canada. Subjects completed a comprehensive survey. HRQoL was measured using: the CHO-KLAT2.0 (youth), Haemo-QoL-A (young adults) and the SF-36v2 (all). Results 13 youth (mean age = 15.7, range = 12.9-17.9 years) and 33 young adults (mean age = 23.6; range = 18.4 -28.7 years) with moderate (7 %) and severe (93 %) HA were enrolled. All were on a prophylactic regimen with antihemophilic factor (Helixate FS®) during the study. The youth had minimal joint damage (mean HJHS = 5.2) compared to young adults (mean HJHS = 13.3). The mean HRQoL scores for youth were: 79.2 (SD = 11.9) for the CHO-KLAT, and 53.0 (5.5) and 52.3 (6.8) for the SF-36 Physical Component Summary (PCS) and Mental Component Summary (MCS) scores respectively. The mean HRQoL scores for young adults were: 85.8 (9.5) for the Haemo-Qol-A, and 50.8 (6.4) and 50.9 (8.8) for PCS and MCS respectively. PCS and MCS scores were comparable to published Canadian norms, however significant differences were found for the domains of Physical Functioning and Bodily Pain. The disease-specific HRQoL scores were weakly correlated with the PCS for youth (CHO-KLAT vs. PCS r = 0.28, p = 0.35); and moderately correlated for the MCS (r = 0.39, p = 0.19). Haemo-QoL-A scores for young adults were strongly correlated with the PCS (r = 0.53, p = 0.001); and weakly correlated with the MCS (r = 0.26, p = 0.13). Joint status as assessed by HJHS was correlated with PCS scores. A history of lifelong prophylaxis resulted in better PCS but worse MCS scores. Conclusion Despite having hemophilia, the youth in this cohort have minimal joint disease and good HRQoL. The young adults demonstrated more joint disease and slightly worse HRQoL in the domains of physical functioning and pain. The data presented here provide new information to inform the selection of Health Related Quality of Life (HRQoL) instruments for use in future clinical trials involving persons with hemophilia. Trial registration ClinicalTrials.gov : NCT01034904. Study funded by CSL Behring Canada. Electronic supplementary material The online version of this article (doi:10.1186/s12878-016-0052-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- J St-Louis
- CHU Sainte-Justine, Montréal, Canada ; Hôpital Maisonneuve-Rosemont, Montreal, Canada
| | | | - F Ménard
- CHU Sainte-Justine, Montréal, Canada
| | - S Cloutier
- Hôpital de l'Enfant-Jésus, Quebec city, Canada
| | - R J Klaassen
- Children's Hospital of Eastern Ontario, Ottawa, Canada
| | - B Ritchie
- University of Alberta, Edmonton, Canada
| | | | - M Warner
- McGill University Health Centre, Montréal, Canada
| | - V Blanchette
- University of Toronto, Toronto, Canada ; Hospital for Sick Children, Toronto, Canada
| | - N L Young
- Laurentian University, Sudbury, Canada ; Hospital for Sick Children, Toronto, Canada
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12
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Page-Karjian A, Norton TM, Ritchie B, Brown C, Mancia C, Jackwood M, Gottdenker NL. Quantifying chelonid herpesvirus 5 in symptomatic and asymptomatic rehabilitating green sea turtles. ENDANGER SPECIES RES 2015. [DOI: 10.3354/esr00687] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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13
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Malbrán A, Riedl M, Ritchie B, Smith WB, Yang W, Banerji A, Hébert J, Gleich GJ, Hurewitz D, Jacobson KW, Bernstein JA, Khan DA, Kirkpatrick CH, Resnick D, Li H, Fernández Romero DS, Lumry W. Repeat treatment of acute hereditary angioedema attacks with open-label icatibant in the FAST-1 trial. Clin Exp Immunol 2014; 177:544-53. [PMID: 24749847 DOI: 10.1111/cei.12358] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2014] [Indexed: 11/30/2022] Open
Abstract
Hereditary angioedema (HAE) is characterized by potentially life-threatening recurrent episodes of oedema. The open-label extension (OLE) phase of the For Angioedema Subcutaneous Treatment (FAST)-1 trial (NCT00097695) evaluated the efficacy and safety of repeated icatibant exposure in adults with multiple HAE attacks. Following completion of the randomized, controlled phase, patients could receive open-label icatibant (30 mg subcutaneously) for subsequent attacks. The primary end-point was time to onset of primary symptom relief, as assessed by visual analogue scale (VAS). Descriptive statistics were reported for cutaneous/abdominal attacks 1-10 treated in the OLE phase and individual laryngeal attacks. Post-hoc analyses were conducted in patients with ≥ 5 attacks across the controlled and OLE phases. Safety was evaluated throughout. During the OLE phase, 72 patients received icatibant for 340 attacks. For cutaneous/abdominal attacks 1-10, the median time to onset of primary symptom relief was 1·0-2·0 h. For laryngeal attacks 1-12, patient-assessed median time to initial symptom improvement was 0·3-1·2 h. Post-hoc analyses showed the time to onset of symptom relief based on composite VAS was consistent across repeated treatments with icatibant. One injection of icatibant was sufficient to treat 88·2% of attacks; rescue medication was required in 5·3% of attacks. No icatibant-related serious adverse events were reported. Icatibant provided consistent efficacy and was well tolerated for repeated treatment of HAE attacks.
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Affiliation(s)
- A Malbrán
- Hospital Británico de Buenos Aires, Buenos Aires, Argentina
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14
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Traore AN, Chan AKC, Webert KE, Heddle N, Ritchie B, St‐Louis J, Teitel J, Lillicrap D, Iorio A, Walker I. First analysis of 10‐year trends in national factor concentrates usage in haemophilia: data from
CHARMS
, the Canadian Hemophilia Assessment and Resource Management System. Haemophilia 2014; 20:e251-9. [PMID: 24948405 PMCID: PMC4140609 DOI: 10.1111/hae.12477] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2014] [Indexed: 11/27/2022]
Affiliation(s)
- A. N. Traore
- McMaster Transfusion Research ProgramMcMaster University Hamilton Ontario Canada
| | - A. K. C. Chan
- Department of PediatricsMcMaster University Hamilton Ontario Canada
| | - K. E. Webert
- Department of Medicine McMaster University Hamilton OntarioCanada
| | - N. Heddle
- Department of Medicine McMaster University Hamilton OntarioCanada
| | - B. Ritchie
- Department of Medicine University of Alberta Edmonton AlbertaCanada
| | - J. St‐Louis
- Department of Hematology Hôpital Maisonneuve‐Rosemont and Université de Montréal Montreal QuebecCanada
| | - J. Teitel
- St. Michael's Hospital Toronto & Central Ontario Hemophilia Program TorontoOntario Canada
| | - D. Lillicrap
- Department of Pathology and Molecular Medicine Queen's University KingstonOntario Canada
| | - A. Iorio
- Clinical Epidemiology and Biostatistics McMaster University Hamilton Ontario Canada
| | - I. Walker
- Department of Medicine McMaster University Hamilton OntarioCanada
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15
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Teitel J, Belliveau D, Blanchette V, Chan A, Klaassen R, Price V, Ritchie B, Wu J. A Canadian survey of self-infusion practices in persons with haemophilia A. Haemophilia 2013; 18:e403-5. [PMID: 23106946 DOI: 10.1111/hae.12013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- J Teitel
- Toronto & Central Ontario Hemophilia Program, St. Michael's Hospital, Toronto, ON, Canada.
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16
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Lumry W, Ritchie B, Baş M. Efficacy of Icatibant in Laryngeal Attacks of Type I and II Hereditary Angioedema (HAE): A Pooled Analysis of Three Phase III Trials. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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17
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Larin I, McNulty D, Clinton E, Ambrozewicz P, Lawrence D, Nakagawa I, Prok Y, Teymurazyan A, Ahmidouch A, Asratyan A, Baker K, Benton L, Bernstein AM, Burkert V, Cole P, Collins P, Dale D, Danagoulian S, Davidenko G, Demirchyan R, Deur A, Dolgolenko A, Dzyubenko G, Ent R, Evdokimov A, Feng J, Gabrielyan M, Gan L, Gasparian A, Gevorkyan S, Glamazdin A, Goryachev V, Gyurjyan V, Hardy K, He J, Ito M, Jiang L, Kashy D, Khandaker M, Kingsberry P, Kolarkar A, Konchatnyi M, Korchin A, Korsch W, Kowalski S, Kubantsev M, Kubarovsky V, Li X, Martel P, Matveev V, Mecking B, Milbrath B, Minehart R, Miskimen R, Mochalov V, Mtingwa S, Overby S, Pasyuk E, Payen M, Pedroni R, Ritchie B, Rodrigues TE, Salgado C, Shahinyan A, Sitnikov A, Sober D, Stepanyan S, Stephens W, Underwood J, Vasiliev A, Vishnyakov V, Wood M, Zhou S. New Measurement of the π0 radiative decay width. Phys Rev Lett 2011; 106:162303. [PMID: 21599360 DOI: 10.1103/physrevlett.106.162303] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2010] [Indexed: 05/30/2023]
Abstract
High precision measurements of the differential cross sections for π0 photoproduction at forward angles for two nuclei, 12C and 208Pb, have been performed for incident photon energies of 4.9-5.5 GeV to extract the π0→γγ decay width. The experiment was done at Jefferson Lab using the Hall B photon tagger and a high-resolution multichannel calorimeter. The π0→γγ decay width was extracted by fitting the measured cross sections using recently updated theoretical models for the process. The resulting value for the decay width is Γ(π0→γγ)=7.82±0.14(stat)±0.17(syst) eV. With the 2.8% total uncertainty, this result is a factor of 2.5 more precise than the current Particle Data Group average of this fundamental quantity, and it is consistent with current theoretical predictions.
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Affiliation(s)
- I Larin
- Alikhanov Institute for Theoretical and Experimental Physics, Moscow, Russia
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Ritchie B. Fast 3: a phase III randomized double-blind, placebo-controlled multicenter study of Icatibant for subcutaneous injection in patients with acute Attacks of Hereditary Angioedema (HAE). Allergy Asthma Clin Immunol 2010. [PMCID: PMC2874297 DOI: 10.1186/1710-1492-6-s1-p27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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19
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Bewtra A, Bernstein J, Ritchie B, Levy R, Wasserman R, Hurewitz D, Obtulowicz K, Reshef A, Moldovan D, Shirov T, Grivcheva-Panovska V, Kiessling P, Keinecke H, Craig T. C1 Esterase Inhibitor: Retrospective Validation of a Commonly Used Endpoint in Hereditary Angioedema Studies, Time to Onset of Relief, in a Global, Multicenter, Randomized, Placebo-Controlled Study (I.M.P.A.C.T.1). J Allergy Clin Immunol 2010. [DOI: 10.1016/j.jaci.2009.12.645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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20
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Orange J, Stein M, Longhurst H, Borte M, Ritchie B, Sturzenegger M, Jolles S, Berger M. Can Subcutaneous IgG Therapy Provide Rapid and Sufficient Serum IgG Levels in Initiation and High Dose Maintenance Settings? J Allergy Clin Immunol 2010. [DOI: 10.1016/j.jaci.2009.12.545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Borte M, Ritchie B, Plebani A, McCusker C, Fernández-Cruz E, Schmidt D, Andresen I, Quinti I. Improvement in Quality of Life Measurements in Newly Diagnosed Patients with Primary Immunodeficiency Receiving Directly Initiated Subcutaneous Replacement Therapy with Vivaglobin. J Allergy Clin Immunol 2010. [DOI: 10.1016/j.jaci.2009.12.550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Arendt A, Echelmeyer K, Harrison W, Lingle C, Zirnheld S, Valentine V, Ritchie B, Druckenmiller M. Updated estimates of glacier volume changes in the western Chugach Mountains, Alaska, and a comparison of regional extrapolation methods. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005jf000436] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. Arendt
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - K. Echelmeyer
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - W. Harrison
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - C. Lingle
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - S. Zirnheld
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - V. Valentine
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - B. Ritchie
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - M. Druckenmiller
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
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Pasiecznik NM, Smith IM, Watson GW, Brunt AA, Ritchie B, Charles LMF. CABI/EPPO distribution maps of plant pests and plant diseases and their important role in plant quarantine. ACTA ACUST UNITED AC 2005. [DOI: 10.1111/j.1365-2338.2005.00815.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Hanley CS, Wilson GH, Frank P, James DKA, Carmichael KP, Pesti D, Ritchie B. T cell lymphoma in the lumbar spine of a domestic ferret (Mustela putorius furo
). Vet Rec 2004; 155:329-32. [PMID: 15470969 DOI: 10.1136/vr.155.11.329] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
A 22-month-old castrated male ferret developed acute pelvic limb paresis. Radiographs and computed tomography revealed a soft tissue mass with associated bony lysis of L5, and ultrasound-guided fine needle aspirates suggested that it was a lymphoma. Treatment with prednisone at immunosuppressive doses did not produce any detectable improvement in the ferret's clinical signs and it became moribund less than two weeks after they developed. A postmortem biopsy confirmed the presence of a lymphoma which had invaded the vertebral bone. No viruses were detected by cell culture, or electron microscopy.
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Affiliation(s)
- C S Hanley
- Department of Small Animal Medicine, University of Georgia, College of Veterinary Medicine, Athens, GA 30602-7390, USA
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25
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Abstract
OBJECTIVES Aboriginal children in tropical Australia have a high prevalence of both iron deficiency and acute infections, making it difficult to differentiate their relative contributions to anaemia. The aims of this study were to compare soluble transferrin receptor with ferritin in iron deficiency anaemia (IDA), and to examine how best to distinguish the effect of iron deficiency from infection on anaemia. METHODS We conducted a prospective study of 228 admissions to Royal Darwin Hospital in children from 6 to 60 months of age. Transferrin receptor concentrations were measured by a particle-enhanced immunoturbidimetric assay and ferritin by a microparticle enzyme immunoassay. RESULTS On multiple regression, the best explanatory variables for haemoglobin differences (r2=33.7%, P<0.001) were mean corpuscular volume (MCV), red cell distribution width (RDW) and C-reactive protein (CRP); whereas transferrin receptor and ferritin were not significant (P>0.4). Using > or =2 abnormal indices (MCV, RDW, blood film)+haemoglobin <110 g/l as the reference standard for IDA, transferrin receptor produced a higher area under the curve on receiver operating characteristic curve analysis than ferritin (0.79 vs. 0.64, P<0.001) or the transferrin receptor-ferritin index (0.77). On logistic regression, the effect of acute infection (CRP) on haemoglobin was significant (P<0.001) at cut-offs of 105 and 110 g/l, but not at 100 g/l when only iron deficiency indicators (MCV, RDW, blood film) were significant. CONCLUSIONS Transferrin receptor does not significantly improve the diagnosis of anaemia (iron deficiency vs. infection) over full blood count and CRP, but in settings with a high burden of infectious diseases and iron deficiency, it is a more reliable adjunctive measure of iron status than ferritin.
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Affiliation(s)
- B Ritchie
- Northern Territory Clinical School, Casuarina, Australia
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26
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Boehm F, Busenitz J, Cook B, Gratta G, Henrikson H, Kornis J, Lawrence D, Lee KB, McKinny K, Miller L, Novikov V, Piepke A, Ritchie B, Tracy D, Vogel P, Wang YF, Wolf J. Search for neutrino oscillations at the palo verde nuclear reactors. Phys Rev Lett 2000; 84:3764-3767. [PMID: 11019200 DOI: 10.1103/physrevlett.84.3764] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/1999] [Indexed: 05/23/2023]
Abstract
We report on the initial results from a measurement of the antineutrino flux and spectrum at a distance of about 800 m from the three reactors of the Palo Verde Nuclear Generating Station using a segmented gadolinium-loaded scintillation detector. We find that the antineutrino flux agrees with that predicted in the absence of oscillations excluding at 90% C.L. nu;(e)-nu;(x) oscillations with Deltam(2)>1.12x10(-3) eV(2) for maximal mixing and sin (2)2straight theta>0.21 for large Deltam(2). Our results support the conclusion that the atmospheric neutrino oscillations observed by Super-Kamiokande do not involve nu(e).
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Affiliation(s)
- F Boehm
- Division of Physics, Mathematics and Astronomy, Caltech, Pasadena, California 91125, USA
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27
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Lee DH, Walker IR, Teitel J, Poon MC, Ritchie B, Akabutu J, Sinclair GD, Pai M, Wu JW, Reddy S, Carter C, Growe G, Lillicrap D, Lam M, Blajchman MA. Effect of the factor V Leiden mutation on the clinical expression of severe hemophilia A. Thromb Haemost 2000; 83:387-91. [PMID: 10744141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
To determine whether the factor V Leiden mutation is associated with decreased bleeding in individuals with severe hemophilia A, factor concentrate utilization, maximum annual number of bleeding episodes, and the prevalence of hemophilic arthropathy between carriers and non-carriers of the factor V Leiden mutation were compared. Heterozygosity for the factor V Leiden mutation was found in 6 of 137 subjects (4.4%). Carriers of the factor V Leiden mutation utilized less factor concentrate (geometric mean: 310 vs. 1185 units/kg/year) and had fewer bleeding episodes than non-carriers (proportion with 10 or fewer bleeding episodes in their worst year: 50 vs. 11%). However, the factor V Leiden mutation was not associated with the absence of arthropathy. The intron 22 inversion mutation of the factor VIII gene was tested for in a subgroup of 80 subjects, but it was not found to be a significant variable for any of the bleeding endpoints. The results of this small study are consistent with the hypothesis that the factor V Leiden mutation imparts a protective effect; however, a larger confirmatory study in which the factor VIII molecular defects can be controlled for is needed. Furthermore, most severe hemophiliacs who used fewer than 200 units/kg/year of factor concentrate or who had experienced 10 or fewer bleeding episodes per year did not carry the factor V Leiden mutation, suggesting that the proportion of severe hemophiliacs whose mild clinical course can be attributed to the factor V Leiden mutation is small.
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Affiliation(s)
- D H Lee
- Department of Medicine, Queen's University, Kingston, Ontario, Canada.
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28
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Schulman S, d'Oiron R, Martinowitz U, Pasi J, Briquel ME, Mauser-Bunschoten E, Morfini M, Ritchie B, Goudemand J, Lloyd J, McPherson J, Négrier C, Peerlinck K, Petrini P, Tusell J. Experiences with continuous infusion of recombinant activated factor VII. Blood Coagul Fibrinolysis 1998; 9 Suppl 1:S97-101. [PMID: 9819037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
A questionnaire was sent to 28 haemophilia treatment centres known to have used recombinant activated factor VII (rFVIIa; NovoSeven, Novo Nordisk, Bagsvaerd, Denmark), to collect data on continuous infusion of this product. This mode of administration was recently introduced for rFVIIa but there are several questions which remain to be answered in order to optimize this technique. Of the 26 responding centres, 14 had used rFVIIa in continuous infusion for 40 treatment episodes over a total of 283 days. In most of the cases the treatment was targeted at a factor VII level of 10 IU/ml, monitored by the one-stage clotting assay. This seemed to be adequate for most of the haemorrhagic and surgical procedures. Pretreatment pharmacokinetic evaluation was performed in only a minority of the cases but is probably of great importance given the wide variation observed in the clearance values. A strategy was necessary to prevent local thrombophlebitis, at least for infusions in peripheral veins; parallel infusion of heparin, saline or dextrose-saline proved effective. The question of optimal monitoring needs further attention. Haemorrhagic complications were significantly less frequent when treatment was combined with the antifibrinolytic tranexamic acid.
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Affiliation(s)
- S Schulman
- Department of Medicine, Karolinska Hospital, Stockholm, Sweden.
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29
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Dai E, Stewart M, Ritchie B, Mesaeli N, Raha S, Kolodziejczyk D, Hobman ML, Liu LY, Etches W, Nation N, Michalak M, Lucas A. Calreticulin, a potential vascular regulatory protein, reduces intimal hyperplasia after arterial injury. Arterioscler Thromb Vasc Biol 1997; 17:2359-68. [PMID: 9409202 DOI: 10.1161/01.atv.17.11.2359] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Both thrombotic and inflammatory responses to arterial injury have been implicated in atherosclerotic plaque growth. Calreticulin is a ubiquitous calcium-binding protein with antithrombotic activity and, in addition, is associated with leukocyte activation. We are investigating calreticulin as a potential vascular regulatory protein. The development of intimal hyperplasia was studied at sites of balloon injury in iliofemoral arteries from 91 rats. Calreticulin was infused directly into the artery immediately before balloon injury, and plaque growth was then assessed at 4 weeks' follow-up. Parallel studies of the effects of each calreticulin domain as well as a related calcium-binding protein, calsequestrin, were examined. The effects of calreticulin on platelet activation, clot formation, and mononuclear cell migration were also studied. When infused before balloon injury in rat iliofemoral arteries, calreticulin, or its high-capacity Ca(2+)-binding C domain, significantly reduces plaque development, whereas calsequestrin, a related calcium-binding protein that lacks the multifunctional nature of calreticulin, does not decrease plaque area (saline: 0.037 +/- 0.007 mm2, calsequestrin: 0.042 +/- 0.021 mm2, calreticulin: 0.003 +/- 0.002 mm2, n = 46, P < .04). The N domain and more specifically the P domain, a low-capacity, high-affinity calcium-binding domain in calreticulin, do not reduce intimal hyperplasia (N + P domain: 0.038 +/- 0.012 mm2, C domain: 0.003 +/- 0.002 mm2, n = 45 rats, P < .0001). Calreticulin reduces macrophage and T cell staining in the arterial wall after injury but has no direct effect on monocyte migration in vitro (percent medial area staining positive for macrophage 24 hours after injury (N + P: 4.06 +/- 1.42, calreticulin: 0.273 +/- 0.02; n = 26, P < .009). Calreticulin does, however, reduce platelet-dependent whole blood clotting time, in vitro (baseline: 78.23 +/- 2.04 seconds, calreticulin: 113.5 +/- 1.95 seconds; n = 5, P < .002). We conclude that calreticulin significantly reduces intimal hyperplasia after arterial injury, potentially acting as a vascular regulatory protein.
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Affiliation(s)
- E Dai
- Cardiovascular Disease Research Group, University of Alberta
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30
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Abstract
To define the molecular regulation of mast cell phenotype and function optimized procedures must be available to study mRNA from mast cells freshly isolated from tissues. However, rat peritoneal mast cells (PMC) contain large amounts of the proteoglycan heparin, and unfortunately, this molecule which is a potent inhibitor of reverse transcriptase (RT) and Taq polymerase and thus RT-PCR, copurifies with RNA. Here we describe an optimized protocol for extracting and amplifying RNA from rat PMC. Mast cells were isolated from rat peritoneum and a method modified from that of Chomczynski and Sacchi (1987) was used to extract the RNA. Following the removal of heparin by heparinase digestion, first strand cDNA synthesis was primed with oligo-dT and the resulting cDNA was quantified by rapid paper chromatography. The use of a detection system for the reverse transcription reaction ensured that the production of cDNA had occurred and allowed subsequent PCR testing to be optimal. cDNA thus produced can be used to detect relatively specific (histidine decarboxylase) and non-specific (beta-actin) mast cell products. Our PCR studies have shown a 300-fold increase in sensitivity over RNA processed by other methods.
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Affiliation(s)
- M Gilchrist
- Department of Medicine, University of Alberta, Edmonton, Canada
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31
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Ritchie B, Feit MD. Fast Fourier transform computational method for the propagation of electromagnetic pulses through layered dielectric media. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1996; 53:1976-1981. [PMID: 9964461 DOI: 10.1103/physreve.53.1976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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32
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Walker I, Pai M, Akabutu J, Ritchie B, Growe G, Poon MC, Card R, Ali K, Israels S, Teitel J. The Canadian Hemophilia Registry as the basis for a national system for monitoring the use of factor concentrates. Transfusion 1995; 35:548-51. [PMID: 7631385 DOI: 10.1046/j.1537-2995.1995.35795357875.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND Canada's publicly funded blood system has recently introduced high-purity concentrates as the standard treatment for individuals with hemophilia. The added cost and the need to document patient outcomes have prompted the consideration of a national blood product monitoring system. STUDY DESIGN AND METHODS This study investigates the suitability of the Canadian Hemophilia Registry (CHR) as the basis of such a monitoring system by assessing the degree to which it represents users of factor concentrates. RESULTS Currently, there are 1978 individuals registered with the CHR, of whom 1594 (81%) have hemophilia A and 384 (19%) have hemophilia B. The total prevalence is 7.2 per 10(5) population, with the prevalence of severe cases being 2.3 per 10(5). This overall prevalence is similar to that seen in other countries with national registries. The CHR national prevalence also compares favorably with that in the province of Quebec, where registration of users of blood products is compulsory. The CHR figures indicate that the number of persons currently infected with human immunodeficiency virus, both alive and dead, is 652, which is similar to the number of applicants (658) to the federal government's assistance program. The registry is stable, and the number of persons with severe cases, other than young children, newly registered or lost to follow-up during the last 2 years is very small. CONCLUSION The CHR includes the vast majority of factor concentrate users and is therefore ideal as the basis for a national monitoring system.
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Affiliation(s)
- I Walker
- Association of Hemophilia Clinic Directors of Canada, Toronto, Ontario
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33
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Ritchie B, Rendalls S, Kennedy P, Abrahams K. The hospital in the home. Med J Aust 1994; 161:285-6. [PMID: 8047042 DOI: 10.5694/j.1326-5377.1994.tb127434.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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34
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Ritchie B. Relativistic self-focusing and channel formation in laser-plasma interactions. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1994; 50:R687-R689. [PMID: 9962176 DOI: 10.1103/physreve.50.r687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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35
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Ritchie B, Rendalls S, Kennedy P, Ovadia C, Mira M, Abraham K. Hospital in the Home project: Royal Prince Alfred Hospital. AUST HEALTH REV 1993; 17:96-101. [PMID: 10139625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
The Central Sydney Area Health Service has developed and piloted a Hospital in the Home program as an alternative to inpatient admission. Hospital in the Home offers the opportunity for increased productivity of existing hospital services, and advantages for patients in terms of satisfaction and improved or comparable clinical outcomes. Having developed treatment protocols and established a core Hospital in the Home team, a wider demonstration project across three hospitals within the Central Sydney Area Health Service is proposed.
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Affiliation(s)
- B Ritchie
- Royal Prince Alfred Hospital, Sydney
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36
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Elza BK, Ritchie B. Use of time-dependent wave-packet theory in electron-molecule scattering. Phys Rev A 1993; 48:2940-2945. [PMID: 9909942 DOI: 10.1103/physreva.48.2940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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37
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Affiliation(s)
- B Ritchie
- University of Calgary, Foothills Hospital, Alberta, Canada
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38
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Toguchida J, Yamaguchi T, Ritchie B, Beauchamp RL, Dayton SH, Herrera GE, Yamamuro T, Kotoura Y, Sasaki MS, Little JB. Mutation spectrum of the p53 gene in bone and soft tissue sarcomas. Cancer Res 1992; 52:6194-9. [PMID: 1423262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We present here an analysis of the spectrum of mutations of the p53 gene seen in 127 bone and soft tissue sarcomas of various histological classifications. Gross rearrangements were analyzed by Southern blotting using a complementary DNA probe from the p53 gene, and subtle alterations in the entire coding sequence (exons 2 through 11) were identified by a combination of single-strand conformation polymorphism analysis and direct genomic sequencing. A total of 42 somatic alterations of the p53 gene were found, of which 21 were gross rearrangements and 21 were subtle alterations. These included 17 cases of a single base substitution, 3 small deletions, and one single base insertion. In contrast to reported findings for other types of cancer, we found that mutations of the p53 gene in sarcomas are quite heterogeneous both in their distribution throughout the gene and in the type of genetic alterations that result. All 13 missense mutations we found occurred at highly conserved residues, whereas 8 nonsense mutations occurred at sites that spanned the gene from codons 46 to 316. Surprisingly, approximately one-half of the osteosarcomas with allelic deletions on 17p did not have detectable alterations in the coding sequence of the p53 gene.
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Affiliation(s)
- J Toguchida
- Howe Laboratory of Ophthalmology, Massachusetts Eye and Ear Infirmary, Boston 02114
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39
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Schreiber WE, Jamani A, Ritchie B. Detection of a T/C Polymorphism in the Porphobilinogen Deaminase Gene by Polymerase Chain Reaction Amplification of Specific Alleles. Clin Chem 1992. [DOI: 10.1093/clinchem/38.10.2153] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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40
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Schreiber WE, Jamani A, Ritchie B. Detection of a T/C polymorphism in the porphobilinogen deaminase gene by polymerase chain reaction amplification of specific alleles. Clin Chem 1992; 38:2153-5. [PMID: 1356661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
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41
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Ritchie B, Chang B. Quantum-mechanical mean of the ejected-electron energy in strong-field ionization. Phys Rev A 1992; 46:674-675. [PMID: 9907912 DOI: 10.1103/physreva.46.674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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42
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Stothers L, Ritchie B. Priapism in the newborn. Can J Surg 1992; 35:325-6. [PMID: 1617542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The authors describe a rare case of priapism in a newborn infant. Treatment with intravenous ketamine hydrochloride produced rapid detumescence. The literature is reviewed with respect to priapism in the newborn and its management, and the authors propose injection of ketamine hydrochloride as an alternative method of management for this condition in newborn infants.
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Affiliation(s)
- L Stothers
- Department of Surgery, University of British Columbia, Vancouver
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43
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Ritchie B. Time-dependent wave-packet theory for electron scattering. Phys Rev A 1992; 45:4207-4209. [PMID: 9907488 DOI: 10.1103/physreva.45.r4207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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44
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Garrison JC, Ritchie B, Nathel H, Hong CK, Minner L. Wave-optics description of amplified spontaneous emission. Phys Rev A 1991; 43:4941-4953. [PMID: 9905612 DOI: 10.1103/physreva.43.4941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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45
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46
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47
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48
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Ritchie B, Bowden CM. Dynamical response and switching of an optically bistable anharmonic oscillator. Phys Rev A Gen Phys 1985; 32:2293-2297. [PMID: 9896343 DOI: 10.1103/physreva.32.2293] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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49
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Ritchie B. Propagation of an ionizing light pulse through a gaseous medium. Phys Rev A Gen Phys 1985; 32:2504-2505. [PMID: 9896369 DOI: 10.1103/physreva.32.2504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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50
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