31 results on '"VanDenBerg, K"'
Search Results
2. Complex speech-language therapy interventions for stroke-related aphasia. The RELEASE study incorporating a systematic review and individual participant data network meta-analysis
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Brady, M.C., Ali, M, Vandenberg, K., Williams, L.J., Ruiter, M.B., The RELEASE Collaboration, T., Brady, M.C., Ali, M, Vandenberg, K., Williams, L.J., Ruiter, M.B., and The RELEASE Collaboration, T.
- Abstract
Contains fulltext : 284026.pdf (Publisher’s version ) (Open Access)
- Published
- 2022
3. Dosage, Intensity, and Frequency of Language Therapy for Aphasia. A Systematic Review. Based, Individual Participant Data Network Meta-Analysis
- Author
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Brady, M.C., Myzoon, A., Vandenberg, K., Ruiter, M.B., Worrall, L., Haris Wright, H., Brady, M.C., Myzoon, A., Vandenberg, K., Ruiter, M.B., Worrall, L., and Haris Wright, H.
- Abstract
01 december 2021, Contains fulltext : 244592.pdf (Publisher’s version ) (Open Access)
- Published
- 2022
4. Utilising a systematic review-based approach to create a database of individual participant data for meta-and network meta-analysis. The RELEASE database of aphasia after stroke
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Williams, L.R., Ali, M, Vandenberg, K., Williams, L.J., Abo, M., Becker, F., Ruiter, M.B., Wright, H.H., Brady, M.C., Williams, L.R., Ali, M, Vandenberg, K., Williams, L.J., Abo, M., Becker, F., Ruiter, M.B., Wright, H.H., and Brady, M.C.
- Abstract
Contains fulltext : 250001.pdf (Publisher’s version ) (Open Access)
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- 2022
5. Precision rehabilitation for aphasia by patient age, sex, aphasia severity, and time since stroke? A prespecified, systematic review-based, individual participant data, network, subgroup meta-analysis
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Brady, M. C., Ali, M., VandenBerg, K., Williams, L. J., Williams, L. R., Abo, M., Becker, F., Bowen, A., Brandenburg, C., Breitenstein, C., Bruehl, S., Copland, D. A., Cranfill, T. B., di Pietro-Bachmann, M., Enderby, P., Fillingham, J., Galli, F. L., Gandolfi, M., Glize, B., Godecke, E., Hawkins, N., Hilari, K., Hinckley, J., Horton, S., Howard, D., Jaecks, P., Jefferies, E., Jesus, L.M.T., Kambanaros, M., Kang, E. K., Khedr, E. M., Kong, A. P., Kukkonen, T., Laganaro, M., Ralph, M. L., Laska, A., Leemann, B., Leff, A. P., Lima, R. R., Lorenz, A., MacWhinney, B., Marshall, R. S., Mattioli, F., Mavis, I., Meinzer, M., Nilipour, R., Noe, E., Paik, N-J., Palmer, R., Papathanasiou, I., Patrício, B., Martins, I., Price, C., Jakovac, T. P., Rochon, E., Rose, M. L., Rosso, C., Rubi-Fessen, I., Ruiter, M. B., Snell, C., Stahl, B., Szaflarski, J. P., Thomas, S. A, van de Sandt-Koenderman, M., van der Meulen, I., Visch-Brink, E., Worrall, L., Wright, H. H., and RELEASE Collaboration
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Male ,genetic structures ,Speech Therapy ,Medical and Health Sciences ,rehabilitation ,Language and Speech, Learning and Therapy ,Aphasia ,Humans ,individual ,network meta-analysis ,Aged ,Language ,Infant, Newborn ,Stroke Rehabilitation ,speech and language therapy ,participant data ,Language & Communication ,P1 ,Aphasia/rehabilitation ,Stroke ,aphasia ,individual participant data ,Neurology ,Female ,Speech Therapy/methods ,RC ,Stroke/complications - Abstract
Background: Stroke rehabilitation interventions are routinely personalized to address individuals’ needs, goals, and challenges based on evidence from aggregated randomized controlled trials (RCT) data and meta-syntheses. Individual participant data (IPD) meta-analyses may better inform the development of precision rehabilitation approaches, quantifying treatment responses while adjusting for confounders and reducing ecological bias. Aim: We explored associations between speech and language therapy (SLT) interventions frequency (days/week), intensity (h/week), and dosage (total SLT-hours) and language outcomes for different age, sex, aphasia severity, and chronicity subgroups by undertaking prespecified subgroup network meta-analyses of the RELEASE database. Methods: MEDLINE, EMBASE, and trial registrations were systematically searched (inception-Sept2015) for RCTs, including ⩾ 10 IPD on stroke-related aphasia. We extracted demographic, stroke, aphasia, SLT, and risk of bias data. Overall-language ability, auditory comprehension, and functional communication outcomes were standardized. A one-stage, random effects, network meta-analysis approach filtered IPD into a single optimal model, examining SLT regimen and language recovery from baseline to first post-intervention follow-up, adjusting for covariates identified a-priori. Data were dichotomized by age (⩽/> 65 years), aphasia severity (mild–moderate/ moderate–severe based on language outcomes’ median value), chronicity (⩽/> 3 months), and sex subgroups. We reported estimates of means and 95% confidence intervals. Where relative variance was high (> 50%), results were reported for completeness. Results: 959 IPD (25 RCTs) were analyzed. For working-age participants, greatest language gains from baseline occurred alongside moderate to high-intensity SLT (functional communication 3-to-4 h/week; overall-language and comprehension > 9 h/week); older participants’ greatest gains occurred alongside low-intensity SLT (⩽ 2 h/week) except for auditory comprehension (> 9 h/week). For both age-groups, SLT-frequency and dosage associated with best language gains were similar. Participants ⩽ 3 months post-onset demonstrated greatest overall-language gains for SLT at low intensity/moderate dosage (⩽ 2 SLT-h/week; 20-to-50 h); for those > 3 months, post-stroke greatest gains were associated with moderate-intensity/high-dosage SLT (3–4 SLT-h/week; ⩾ 50 hours). For moderate–severe participants, 4 SLT-days/week conferred the greatest language gains across outcomes, with auditory comprehension gains only observed for ⩾ 4 SLT-days/week; mild–moderate participants’ greatest functional communication gains were associated with similar frequency (⩾ 4 SLT-days/week) and greatest overall-language gains with higher frequency SLT (⩾ 6 days/weekly). Males’ greatest gains were associated with SLT of moderate (functional communication; 3-to-4 h/weekly) or high intensity (overall-language and auditory comprehension; (> 9 h/weekly) compared to females for whom the greatest gains were associated with lower-intensity SLT ( 9 h over ⩾ 4 days/week. Conclusions: We observed a treatment response in most subgroups’ overall-language, auditory comprehension, and functional communication language gains. For some, the maximum treatment response varied in association with different SLT-frequency, intensity, and dosage. Where differences were observed, working-aged, chronic, mild–moderate, and male subgroups experienced their greatest language gains alongside high-frequency/intensity SLT. In contrast, older, moderate–severely impaired, and female subgroups within 3 months of aphasia onset made their greatest gains for lower-intensity SLT. The acceptability, clinical, and cost effectiveness of precision aphasia rehabilitation approaches based on age, sex, aphasia severity, and chronicity should be evaluated in future clinical RCTs.
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- 2022
6. RELEASE: a protocol for a systematic review based, individual participant data, meta- and network meta-analysis, of complex speech-language therapy interventions for stroke-related aphasia
- Author
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Brady, MC, Ali, M, VandenBerg, K, Williams, LJ, Williams, LR, Abo, M, Becker, F, Bowen, A, Brandenburg, C, Breitenstein, C, Bruehl, S, Copland, DA, Cranfill, TB, Pietro-Bachmann, MD, Enderby, P, Fillingham, J, Galli, FL, Gandolfi, M, Glize, B, Godecke, E, Hawkins, N, Hilari, K, Hinckley, J, Horton, S, Howard, D, Jaecks, P, Jefferies, E, Jesus, LMT, Kambanaros, M, Kang, EK, Khedr, EM, Kong, APH, Kukkonen, T, Laganaro, M, Ralph, MAL, Laska, AC, Leemann, B, Leff, AP, Lima, RR, Lorenz, A, MacWhinney, B, Marshall, RS, Mattioli, F, Maviş, İ, Meinzer, M, Nilipour, R, Noé, E, Paik, NJ, Palmer, R, Papathanasiou, I, Patricio, BF, Martins, IP, Price, C, Jakovac, TP, Rochon, E, Rose, ML, Rosso, C, Rubi-Fessen, I, Ruiter, MB, Snell, C, Stahl, B, Szaflarski, JP, Thomas, SA, Van De Sandt-Koenderman, M, Van Der Meulen, I, Visch-Brink, E, Worrall, L, Wright, HH, Brady, MC [0000-0002-4589-7021], Ali, M [0000-0001-5899-2485], VandenBerg, K [0000-0001-5035-9650], Williams, LJ [0000-0002-6317-1718], Williams, LR [0000-0003-2430-1142], Abo, M [0000-0001-6701-4974], Becker, F [0000-0002-0857-0628], Bowen, A [0000-0003-4075-1215], Brandenburg, C [0000-0002-6992-7790], Breitenstein, C [0000-0002-6408-873X], Bruehl, S [0000-0003-4826-1990], Copland, DA [0000-0002-2257-4270], Cranfill, TB [0000-0001-7608-6443], Pietro-Bachmann, MD [0000-0001-8027-2337], Enderby, P [0000-0002-4371-9053], Fillingham, J [0000-0002-0363-8021], Galli, FL [0000-0001-9244-9179], Gandolfi, M [0000-0002-0877-4807], Glize, B [0000-0001-9618-2088], Hawkins, N [0000-0002-7210-1295], Hilari, K [0000-0003-2091-4849], Hinckley, J [0000-0002-4052-1420], Horton, S [0000-0002-2133-1410], Howard, D [0000-0001-9141-5751], Jaecks, P [0000-0002-5878-1327], Jefferies, E [0000-0002-3826-4330], Jesus, LMT [0000-0002-8534-3218], Kambanaros, M [0000-0002-5857-9460], Kang, EK [0000-0001-5315-1361], Khedr, EM [0000-0001-5679-9833], Kong, APH [0000-0002-6211-0358], Kukkonen, T [0000-0002-8189-0337], Laganaro, M [0000-0002-4054-0939], Ralph, MAL [0000-0001-5907-2488], Laska, AC [0000-0002-7330-940X], Leemann, B [0000-0003-2226-6777], Leff, AP [0000-0002-0831-3541], Lima, RR [0000-0002-9914-4789], Lorenz, A [0000-0002-0200-1977], MacWhinney, B [0000-0002-4988-1342], Marshall, RS [0000-0001-9313-5454], Mattioli, F [0000-0002-4912-5520], Maviş, İ [0000-0003-3924-1138], Meinzer, M [0000-0003-1370-3947], Nilipour, R [0000-0003-4180-7989], Noé, E [0000-0002-2547-8727], Paik, NJ [0000-0002-5193-8678], Palmer, R [0000-0002-2335-7104], Papathanasiou, I [0000-0003-0999-696X], Patricio, BF [0000-0002-2619-470X], Martins, IP [0000-0002-9611-7400], Price, C [0000-0003-0111-9364], Jakovac, TP [0000-0002-5018-9556], Rochon, E [0000-0001-5521-0513], Rose, ML [0000-0002-8892-0965], Rosso, C [0000-0001-7236-1508], Rubi-Fessen, I [0000-0002-9775-3812], Ruiter, MB [0000-0001-6147-5235], Snell, C [0000-0001-8606-7801], Stahl, B [0000-0003-3957-1495], Szaflarski, JP [0000-0002-5936-6627], Thomas, SA [0000-0003-0704-9387], van de Sandt-Koenderman, M [0000-0002-8104-6937], van der Meulen, I [0000-0002-6156-3873], Visch-Brink, E [0000-0001-7833-0112], Worrall, L [0000-0002-3283-7038], Wright, HH [0000-0001-6922-6364], and Apollo - University of Cambridge Repository
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Stroke ,IPD ,meta-analysis ,stroke, aphasia, complex intervention, IPD, meta-analysis ,genetic structures ,aphasia ,complex intervention - Abstract
Background: Speech and language therapy (SLT) benefits people with aphasia following stroke. Group level summary statistics from randomised controlled trials hinder exploration of highly complex SLT interventions and a clinically relevant heterogeneous population. Creating a database of individual participant data (IPD) for people with aphasia aims to allow exploration of individual and therapy-related predictors of recovery and prognosis.\ud \ud Aim: To explore the contribution that individual participant characteristics (including stroke and aphasia profiles) and SLT intervention components make to language recovery following stroke.\ud \ud Methods and procedures: We will identify eligible IPD datasets (including randomised controlled trials, non-randomised comparison studies, observational studies and registries) and invite their contribution to the database. Where possible, we will use meta- and network meta-analysis to explore language performance after stroke and predictors of recovery as it relates to participants who had no SLT, historical SLT or SLT in the primary research study. We will also examine the components of effective SLT interventions.\ud \ud Outcomes and results: Outcomes include changes in measures of functional communication, overall severity of language impairment, auditory comprehension, spoken language (including naming), reading and writing from baseline. Data captured on assessment tools will be collated and transformed to a standardised measure for each of the outcome domains.\ud \ud Conclusion: Our planned systematic-review-based IPD meta- and network meta-analysis is a large scale, international, multidisciplinary and methodologically complex endeavour. It will enable hypotheses to be generated and tested to optimise and inform development of interventions for people with aphasia after stroke.\ud \ud Systematic review registration: The protocol has been registered at the International Prospective Register of Systematic Reviews (PROSPERO; registration number: CRD42018110947)
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- 2020
7. Predictors of Poststroke Aphasia Recovery
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Ali, M., VandenBerg, K., Williams, L., Abo, M., Becker, F., Bowen, A., Brandenburg, C., Breitenstein, C., Bruehl, S., Copland, D., Cranfill, T. B., Pietro-Bachmann, M. di, Enderby, P., Fillingham, J., Lucia Galli, F., Gandolfi, M., Glize, B., Godecke, E., Hawkins, N., Hilari, K., Hinckley, J., Horton, S., Howard, D., Jaecks, P., Jefferies, E., Jesus, L.M.T., Kambanaros, M., Kyoung Kang, E., Khedr, E. M., Pak-Hin Kong, A., Kukkonen, T., Laganaro, M., Lambon Ralph, M. A., Charlotte Laska, A., Leemann, B., Leff, A., Lima, R., Lorenz, A., Mac Whinney, B., Shisler Marshall, R., Mattioli, F., Mavis, I., Meinzer, M., Nilipour, R., Noe, E., Paik, N-J., Palmer, R., Papathanasiou, I., Patrício, B., Pavao Martins, I., Price, C., Prizl Jakovac, T., Rochon, E., Rose, M., Rosso, C., Rubi-Fessen, I., Ruiter, M. B., Snell, C., Stahl, B., Szaflarski, J. P., Thomas, S. A, van de Sandt-Koenderman, M., van der Meulen, I., Visch-Brink, E., Worrall, L., Harris Wright, H., and Brady, M. C.
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behavioral disciplines and activities ,P1 ,RC - Abstract
Background and Purpose:\ud The factors associated with recovery of language domains after stroke remain uncertain. We described recovery of overall-language-ability, auditory comprehension, naming, and functional-communication across participants’ age, sex, and aphasia chronicity in a large, multilingual, international aphasia dataset.\ud \ud Methods:\ud Individual participant data meta-analysis of systematically sourced aphasia datasets described overall-language ability using the Western Aphasia Battery Aphasia-Quotient; auditory comprehension by Aachen Aphasia Test (AAT) Token Test; naming by Boston Naming Test and functional-communication by AAT Spontaneous-Speech Communication subscale. Multivariable analyses regressed absolute score-changes from baseline across language domains onto covariates identified a priori in randomized controlled trials and all study types. Change-from-baseline scores were presented as estimates of means and 95% CIs. Heterogeneity was described using relative variance. Risk of bias was considered at dataset and meta-analysis level.\ud \ud Results:\ud Assessments at baseline (median=43.6 weeks poststroke; interquartile range [4–165.1]) and first-follow-up (median=10 weeks from baseline; interquartile range [3–26]) were available for n=943 on overall-language ability, n=1056 on auditory comprehension, n=791 on naming and n=974 on functional-communication. Younger age (
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- 2021
8. Dosage, Intensity, and Frequency of Language Therapy for Aphasia. A Systematic Review. Based, Individual Participant Data Network Meta-Analysis
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Brady, M.C., Myzoon, A., Vandenberg, K., Ruiter, M.B., Worrall, L., Haris Wright, H., Brady, M.C., Myzoon, A., Vandenberg, K., Ruiter, M.B., Worrall, L., and Haris Wright, H.
- Abstract
01 december 2021, Item does not contain fulltext
- Published
- 2021
9. Predictors of Poststroke Aphasia Recovery. A Systematic Review-Informed Individual Participant Data Meta-Analysis
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Myzoon, A., Vandenberg, K., Williams, L.J., Williams, L.R., Ruiter, M.B., Worrall, L., Wright, H.H., Brady, M.C., Myzoon, A., Vandenberg, K., Williams, L.J., Williams, L.R., Ruiter, M.B., Worrall, L., Wright, H.H., and Brady, M.C.
- Abstract
Contains fulltext : 233086.pdf (Publisher’s version ) (Open Access)
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- 2021
10. Potency Testing of Venoms and Antivenoms in Embryonated Eggs: An Ethical Alternative to Animal Testing.
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Verity, EE, Stewart, K, Vandenberg, K, Ong, C, Rockman, S, Verity, EE, Stewart, K, Vandenberg, K, Ong, C, and Rockman, S
- Abstract
Venoms are complex mixtures of biologically active molecules that impact multiple physiological systems. Manufacture of antivenoms (AVs) therefore requires potency testing using in vivo models to ensure AV efficacy. As part of ongoing research to replace small animals as the standard model for AV potency testing, we developed an alternate in vivo method using the embryonated egg model (EEM). In this model, the survival of chicken embryos envenomated in ovo is determined prior to 50% gestation, when they are recognized as animals by animal welfare legislation. Embryos were found to be susceptible to a range of snake, spider, and marine venoms. This included funnel-web spider venom for which the only other vertebrate, non-primate animal model is newborn mice. Neutralization of venom with standard AV allowed correlation of AV potency results from the EEM to results from animal assays. Our findings indicate that the EEM provides an alternative, insensate in vivo model for the assessment of AV potency. The EEM may enable reduction or replacement of the use of small animals, as longer-term research that enables the elimination of animal use in potency testing continues.
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- 2021
11. RELEASE. Communicating simply, but not too simply. Reporting of participants and speech and language interventions for aphasia after stroke
- Author
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Brady, M. C., Ali, M., VandenBerg, K., Williams, L. J., Williams, L., Abo, M., Becker, F., Bowen, A., Brandenburg, C., Breitenstein, C., Bruehl, S., Copland, D., Cranfill, T. B., di Pietro-Bachmann, M., Enderby, P., Fillingham, J., Galli, F., Gandolfi, M., Glize, B., Godecke, E., Hawkins, N., Hilari, K., Hinckley, J., Horton, S., Howard, D., Jaecks, P., Jefferies, E., Jesus, L.M.T., Kambanaros, M., Kang, E. K., Khedr, E. M., Kong, A. P., Kukkonen, T., Laganaro, M., Lambon-Ralph, M. A., Laska, A., Leemann, B., Leff, A. P., Lima, R. R., Lorenz, A., MacWhinney, B., Marshall, R. S., Mattioli, F., Mavis, I., Meinzer, M., Nilipour, R., Noe, E., Paik, N-J., Palmer, R., Papathanasiou, I., Patrício, B., Martins, I., Price, C., Jakovac, T. P., Rochon, E., Rose, M., Rosso, C., Rubi-Fessen, I., Ruiter, M. B., Snell, C., Stahl, B., Szaflarski, J. P., Thomas, S. A., van de Sandt-Koenderman, M., van der Meulen, I., Visch-Brink, E., Worrall, L., Wright, H. H., Tampere University, Department of Neurosciences and Rehabilitation, Welfare Sciences, and RELEASE Collaboration
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medicine.medical_specialty ,Speech-Language Pathology ,515 Psychology ,Applied psychology ,Psychological intervention ,Context (language use) ,Language and Linguistics ,3124 Neurology and psychiatry ,Language and Speech, Learning and Therapy ,Speech and Hearing ,complex interventions ,Intervention (counseling) ,Aphasia ,medicine ,Humans ,Uncategorized ,Research and Theory ,Stroke Rehabilitation ,Secondary data ,speech and language therapy ,Guideline ,LPN and LVN ,stroke ,Checklist ,aphasia ,Language & Communication ,P1 ,Stroke ,Otorhinolaryngology ,medicine.symptom ,Psychology ,RC - Abstract
© 2020, © 2020 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. Purpose: Speech and language pathology (SLP) for aphasia is a complex intervention delivered to a heterogeneous population within diverse settings. Simplistic descriptions of participants and interventions in research hinder replication, interpretation of results, guideline and research developments through secondary data analyses. This study aimed to describe the availability of participant and intervention descriptors in existing aphasia research datasets. Method: We systematically identified aphasia research datasets containing ≥10 participants with information on time since stroke and language ability. We extracted participant and SLP intervention descriptions and considered the availability of data compared to historical and current reporting standards. We developed an extension to the Template for Intervention Description and Replication checklist to support meaningful classification and synthesis of the SLP interventions to support secondary data analysis. Result: Of 11, 314 identified records we screened 1131 full texts and received 75 dataset contributions. We extracted data from 99 additional public domain datasets. Participant age (97.1%) and sex (90.8%) were commonly available. Prior stroke (25.8%), living context (12.1%) and socio-economic status (2.3%) were rarely available. Therapy impairment target, frequency and duration were most commonly available but predominately described at group level. Home practice (46.3%) and tailoring (functional relevance 46.3%) were inconsistently available. Conclusion : Gaps in the availability of participant and intervention details were significant, hampering clinical implementation of evidence into practice and development of our field of research. Improvements in the quality and consistency of participant and intervention data reported in aphasia research are required to maximise clinical implementation, replication in research and the generation of insights from secondary data analysis. Systematic review registration: PROSPERO CRD42018110947.
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- 2020
12. RELEASE. Communicating simply, but not too simply. Reporting of participants and speech and language interventions for aphasia after stroke
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Brady, M.C., Vandenberg, K., Abo, M., Ruiter, M.B., Worral, L., Harris Wright, H., Brady, M.C., Vandenberg, K., Abo, M., Ruiter, M.B., Worral, L., and Harris Wright, H.
- Abstract
Contains fulltext : 227445.pdf (Publisher’s version ) (Open Access)
- Published
- 2020
13. RELEASE: A protocol for a systematic review based, individual participant data, meta- and network meta-analysis, of complex speech-language therapy interventions for stroke-related aphasia
- Author
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Brady, M. C., Ali, M., VandenBerg, K., Williams, L. J., Williams, L. R., Abo, M., Becker, F., Bowen, A., Brandenburg, C., Breitenstein, C., Bruehl, S., Copland, D., Cranfill, T. B., de Pietro-Bachmann, M., Enderby, P., Fillingham, J., Galli, F., Gandolfi, M., Glize, B., Godecke, E., Hawkins, N., Hilari, K., Hinckley, J., Horton, S., Howard, D., Jaecks, P., Jefferies, E., Jesus, L.M.T., Kambanaros, M., Laganaro, M., Lambon Ralph, M. A., Laska, A., Leemann, B., Leff, A.P., Lima, R., Lorenz, A., MacWhinney, B., Shisler Marshall, R., Mattioli, F., Mavis, I., Meinzer, M., Nilipour, R., Noe, E., Paik, N-J., Palmer, R., Papathanasiou, I., Patrício, B., Pavao Martins, I., Price, C. J., Prizl Jakovac, T., Rochon, E., Rose, M., Rosso, C., Rubi-Fessen, I., Ruiter, M. B., Snell, C., Stahl, B., Szaflarski, J., Thomas, S., van de Sandt-Koenderman, M., van der Meulen, I., Visch-Brink, E., Worrall, L., and Harris Wright, H.
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P1 - Abstract
Background: Speech and language therapy (SLT) benefits people with aphasia following stroke. Group level summary statistics from randomised controlled trials hinder exploration of highly complex SLT interventions and a clinically relevant heterogeneous population. Creating a database of individual participant data (IPD) for people with aphasia aims to allow exploration of individual and therapy-related predictors of recovery and prognosis. \ud \ud Aim: To explore the contribution that individual participant characteristics (including stroke and aphasia profiles) and SLT intervention components make to language recovery following stroke.\ud \ud Methods and procedures: We will identify eligible IPD datasets (including randomised controlled trials, non-randomised comparison studies, observational studies and registries) and invite their contribution to the database. Where possible, we will use metaand network meta-analysis to explore language performance after stroke and predictors of recovery as it relates to participants who had no SLT, historical SLT or SLT in the primary research study. We will also examine the components of effective SLT interventions.\ud \ud Outcomes and results: Outcomes include changes in measures of functional communication, overall severity of language impairment, auditory comprehension, spoken language (including naming), reading and writing from baseline. Data captured on assessment tools will be collated and transformed to a standardised measure for each of the outcome domains.\ud \ud Conclusion: Our planned systematic-review-based IPD meta- and network meta-analysis is a large scale, international, multidisciplinary and methodologically complex endeavour. It will enable hypotheses to be generated and tested to optimise and inform development of interventions for people with aphasia after stroke.\ud \ud Systematic review registration: The protocol has been registered at the International Prospective Register of Systematic Reviews (PROSPERO; registration number: CRD42018110947
- Published
- 2019
14. RELEASE. A protocol for a systematic review based, individual participant data, meta- and network meta-analysis, of complex speech-language therapy interventions for stroke-related aphasia
- Author
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Brady, M.C., Vandenberg, K., Abo, M., Ruiter, M.B., Worral, L., Harris Wright, H., Brady, M.C., Vandenberg, K., Abo, M., Ruiter, M.B., Worral, L., and Harris Wright, H.
- Abstract
25 augustus 2019, Contains fulltext : 214875.pdf (publisher's version ) (Open Access)
- Published
- 2019
15. Tidier descriptions of speech and language therapy interventions for people with aphasia; consensus from the RELEASE Collaboration
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Rose, M. L., Ali, M., Elders, A., Godwin, J., Sandri, A. K., Williams, L. J., Williams, L. R., VandenBerg, K., Abel, S., Abo, M., Becker, F., Bowen, A., Brandenburg, C., Breitenstein, C., Copland, D., Cranfill, T. B., di Pietro-Bachmann, M., Enderby, P., Fillingham, J., Galli, F., Gandolfi, M., Glize, B., Godecke, E., Hilari, K., Hinckley, J., Horton, S., Howard, D., Jaecks, P., Jefferies, B., Jesus, L., Kambanaros, M., Khedr, E. M., Kong, A. P., Kukkonen, T., Kang, E. K., Ralph, M. L., Laganaro, M., Laska, A-C., Leemann, B., Leff, A., Lorenz, A., MacWhinney, B., Mattioli, F., Mavis, I., Meinzer, M., Sebastián, E., Nilipour, R., O’halloran, R., Paik, N-J., Palmer, R., Papathanasiou, I., Patrício, B., Martins, I., Pierce, J., Price, C., Jakovac, T. P., Rochon, E., Rosso, C., Ribeiro, R., Rubi-Fessen, I., Ruiter, M. B., Marshall, R. S., Small, S., Snell, C., Stahl, B., Szaflarski, J., Thomas, S., Togher, L., van der Meulen, I., van de Sandt-Koenderman, M., Visch-Brink, E., Worrall, L., Wright, H. H., and Brady, M. C.
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aphasia rehabilitation ,speech and language interventions ,categorizing interventions ,RT ,P1 - Abstract
Background: Speech and language therapy (SLT) interventions for people with aphasia are complex – for example, interventions vary by delivery model (face-to-face, tele-rehabilitation), dynamic (group, 1-to-1) and provider. Therapists tailor the functional relevance and intervention difficulty to the individual’s needs. Therapy regimes are planned at a specific intensity (hours per week), frequency (number of weekly sessions), duration (time from start to end of therapy intervention) and dose (total number of therapy hours). Detailed and transparent description of interventions for people with aphasia facilitates replication in clinic, between-study comparisons and data-syntheses. Incomplete intervention reporting and inconsisten-cies in the use of terminology have been observed (RELEASE: REhabilitation and recovery of peopLE with Aphasia after StrokE Collaborators, 2015-2018; Brady, Kelly, Godwin, Enderby, & Campbell, 2016; Pierce, O’Halloran, Togher, & Rose, in press). Even when similar terms are used there may be little agreement on their use (Pierce et al., in press). Our RELEASE Collaboration includes 72 multidisciplinary, multilingual aphasia researchers from 28 countries. In preparation for planned meta-analyses (HS&DR 14/04/22) we sought to extract and synthesise information on SLT interventions for aphasia. Description of interventions in research reports have benefited from the Template for Intervention Description and Replication (TIDieR; (Hoffmann et al., 2014). The TIDieR checklist supports transparent reporting, data extraction and synthesis in aphasia research. It has facilitated an exploration of the contribution specific parameters (for example intensity) may make to the effectiveness of (or tolerance to) an intervention (Brady et al., 2016). However, while the variables described above are readily summarised, other aspects of therapeutic interventions such as the theoretical approach, the materials used and the procedures employed (the “Why” and “What” within TIDieR) are more challenging to summarise in manner supporting data synthesis and meta-analyses. The World Health Organisation’s (“International Classification of Health Interventions (ICHI),”) also seeks a framework which supports the synthesis and statistical analysis of healthcare interventions based on (a) the treatment target, (b) the intended action to the target and (c) the processes and methods required to carry out the action (ICHI, 2018). However a framework which complements these initiatives and which supports greater consistency in the description of SLT interventions for aphasia is required.\ud \ud Aims: We sought to develop international consensus on a framework to support the description of SLT interventions for people with aphasia. Methods and procedures: Two researchers independently extracted information about the SLT interventions in our RELEASE database (Hoffmann et al., 2014). Information on therapy approaches, materials and procedures were extracted, where possible, as direct quotes from published reports. Using the narrative descriptions, similar approaches were grouped and assigned to one or more category labels by an experienced speech and language therapist. These preliminary groupings were shared with RELEASE Collaborators for review. Each reviewed interventions included within up to four category labels and responses via email were requested. There followed an opportunity for group discussion on the proposed categorisation via videoconference.\ud \ud Outcomes and results: Therapy interventions were categorised based on three per-spectives (a) the role of the intervention within the study design e.g., usual care as a comparison control (b) the intervention target e.g., rehabilitation of spoken language production and (c) the theoretical approach e.g., semantic therapy. We identified 15 SLT approaches. Categories were not mutually exclusive; rather they represented different ways of categorising a complex intervention. Inadequate reporting of therapy interven-tions, procedures and materials hampered some classifications. The Collaboration facilitated knowledge sharing relating to emerging treatment category definitions such as multimodal treatment (Pierce et al., in press) which reflected interventions aimed to utilise a range of learning mechanisms and neural networks to facilitate language recovery.\ud \ud Conclusions: Our collaboration agreed on a framework which supports transparent description, data synthesis and meta-analyses of SLT interventions for people with aphasia after stroke.
- Published
- 2018
16. Creating an international, multidisciplinary, aphasia dataset of individual patient data (IPD) for the REhabilitation and recovery of peopLE with Aphasia after StrokE (RELEASE) project
- Author
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Williams, L., Ali, M., VandenBerg, K., Godwin, J., Elders, A., Becker, F., Bowen, A., Breitenstein, C., Gandolfi, M., Godecke, E., Hilari, K., Hinckley, J., Horton, S., Howard, D., Jesus, L.M.T., Jungblut, M., Kambanaros, M., Kukkonen, T., Laska, A., MacWhinney, B., Martins, I., Mattioli, F., Meinzer, M., Palmer, R., Patrício, B., Price, C., Smania, N., Szaflarski, J., Thomas, S., Visch-Brink, E., Worrall, L., and Brady, M. C.
- Subjects
RT ,P1 - Abstract
Introduction:\ud Aphasia affects a third of stroke survivors (~5.6 million worldwide annually). The social and emotional impact of aphasia makes timely and effective rehabilitation vital. Speech and language therapy benefits recovery; however the specific patient, stroke, aphasia and intervention factors which optimise recovery and rehabilitation are unclear. We will explore these uncertainties in our RELEASE study (NIHR HS&DR 14/04/22). In Phase I of this study we aimed to create a large, collaborative, international database of individual patient data (IPD) from pre-existing aphasia research.\ud \ud Method:\ud Eligible datasets included IPD of ≥10 people with stroke-related aphasia, with time poststroke specified and aphasia severity data. Contributions were invited from international, multidisciplinary, aphasia research collaborators via the EU COST funded Collaboration of Aphasia Trialists. We also conducted a systematic search of the literature [Cochrane Stroke Group Trials, MEDLINE, CINAHL, AMED, Cochrane Library Databases (CDSR, DARE, CENTRAL, HTA), EMBASE, LLBA and SpeechBITE from inception to Sept 2015 for additional datasets. Two independent reviewers considered full texts, a third resolved any conflicts.\ud \ud Results:\ud As of June 2016 our database included 2,531 IPD from 11 countries (33 datasets). Nine were in the public domain. Following the systematic search of 5,272 records (of which 75 duplicates, 2,395 reference titles and 965 abstracts were excluded) further datasets were identified and the investigators of these datasets invited to collaborate.\ud \ud Conclusion:\ud We succeeded in creating a large, collaborative, international aphasia database of preexisting IPD. A systematic search process to identify additional datasets eligible for inclusion supplemented more informal dataset recruitment methods.
- Published
- 2016
17. Intravenous Immunoglobulin Protects Against Severe Pandemic Influenza Infection
- Author
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Rockman, S, Lowther, S, Camuglia, S, Vandenberg, K, Taylor, S, Fabri, L, Miescher, S, Pearse, M, Middleton, D, Kent, SJ, Maher, D, Rockman, S, Lowther, S, Camuglia, S, Vandenberg, K, Taylor, S, Fabri, L, Miescher, S, Pearse, M, Middleton, D, Kent, SJ, and Maher, D
- Abstract
Influenza is a highly contagious, acute, febrile respiratory infection that can have fatal consequences particularly in individuals with chronic illnesses. Sporadic reports suggest that intravenous immunoglobulin (IVIg) may be efficacious in the influenza setting. We investigated the potential of human IVIg to ameliorate influenza infection in ferrets exposed to either the pandemic H1N1/09 virus (pH1N1) or highly pathogenic avian influenza (H5N1). IVIg administered at the time of influenza virus exposure led to a significant reduction in lung viral load following pH1N1 challenge. In the lethal H5N1 model, the majority of animals given IVIg survived challenge in a dose dependent manner. Protection was also afforded by purified F(ab')2 but not Fc fragments derived from IVIg, supporting a specific antibody-mediated mechanism of protection. We conclude that pre-pandemic IVIg can modulate serious influenza infection-associated mortality and morbidity. IVIg could be useful prophylactically in the event of a pandemic to protect vulnerable population groups and in the critical care setting as a first stage intervention.
- Published
- 2017
18. Development of an enzyme-linked immunoassay for the quantitation of influenza haemagglutinin: an alternative method to single radial immunodiffusion
- Author
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Bodle, J, Verity, EE, Ong, C, Vandenberg, K, Shaw, R, Barr, IG, Rockman, S, Bodle, J, Verity, EE, Ong, C, Vandenberg, K, Shaw, R, Barr, IG, and Rockman, S
- Abstract
BACKGROUND: The current method used to measure haemagglutinin (HA) content for influenza vaccine formulation, single radial immunodiffusion (SRID), is lengthy and relies on the availability of matched standardised homologous reagents. The 2009 influenza pandemic highlighted the need to develop alternate assays that are able to rapidly quantitate HA antigen for vaccine formulation. OBJECTIVES: The aim of this work was to develop an enzyme-linked immunoassay (EIA) for the rapid quantitation of H1, H3, H5 and B influenza HA antigens. METHODS: Monoclonal antibodies (mAbs) selected for haemagglutination inhibition (HAI) activity were conjugated with horseradish peroxidase and used to establish a capture-detection EIA for the quantitation of HA antigen. Results were compared with the appropriate reference SRID assays to investigate assay performance and utility. RESULTS: Quantitation of HA antigen by EIA correlated well with current reference SRID assays. EIA results showed equivalent precision and exhibited a similar capacity to detect HA antigen in virus samples that had been used in either stability or splitting studies, or subjected to physical or chemical stresses. EIA exhibited greater sensitivity than SRID and has the potential to be used in high-throughput applications. CONCLUSIONS: We demonstrated the utility of EIA as a suitable alternative to SRID for HA antigen quantitation and stability assessment. This approach would lead to earlier availability of both seasonal and pandemic vaccines, because of the extended cross-reactivity of reagents.
- Published
- 2013
19. A three-center, randomized, controlled trial of individualized developmental care for very low birth weight preterm infants: medical, neurodevelopmental, parenting, and caregiving effects.
- Author
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Als, H., Gilkerson, L., Duffy, F.H., McAnulty, G.B., Buehler, D.M., Vandenberg, K., Sweet, N., Sell, E., Parad, R.B., Ringer, S.A., Butler, S.C., Blickman, J.G., Jones, K.J., Als, H., Gilkerson, L., Duffy, F.H., McAnulty, G.B., Buehler, D.M., Vandenberg, K., Sweet, N., Sell, E., Parad, R.B., Ringer, S.A., Butler, S.C., Blickman, J.G., and Jones, K.J.
- Abstract
Contains fulltext : 57579.pdf (publisher's version ) (Closed access), Medical, neurodevelopmental, and parenting effects of individualized developmental care were investigated in a three-center, randomized, controlled trial. A total of 92 preterm infants, weighing less than 1250 g and aged less than 28 weeks, participated. Outcome measures included medical, neurodevelopmental and family function. Quality of care was also assessed. Multivariate analysis of variance investigated group, site, and interaction effects; correlation analysis identified individual variable contributions to significant effects. The results consistently favored the experimental groups. The following contributed to the group effects: shorter duration of parenteral feeding, transition to full oral feeding, intensive care, and hospitalization; lower incidence of necrotizing enterocolitis; reduced discharge ages and hospital charges; improved weight, length, and head circumferences; enhanced autonomic, motor, state, attention, and self-regulatory functioning; reduced need for facilitation; and lowered family stress and enhanced appreciation of the infant. Quality of care was measurably improved. Very low birth weight infants and their parents, across diverse settings, may benefit from individualized developmental care.
- Published
- 2004
20. A three-center, randomized, controlled trial of individualized developmental care for very low birth weight preterm infants: medical, neurodevelopmental, parenting, and caregiving effects.
- Author
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Als, H., Gilkerson, L., Duffy, F.H., McAnulty, G.B., Buehler, D.M., Vandenberg, K., Sweet, N., Sell, E., Parad, R.B., Ringer, S.A., Butler, S.C., Blickman, J.G., Jones, K.J., Als, H., Gilkerson, L., Duffy, F.H., McAnulty, G.B., Buehler, D.M., Vandenberg, K., Sweet, N., Sell, E., Parad, R.B., Ringer, S.A., Butler, S.C., Blickman, J.G., and Jones, K.J.
- Abstract
Item does not contain fulltext, Medical, neurodevelopmental, and parenting effects of individualized developmental care were investigated in a three-center, randomized, controlled trial. A total of 92 preterm infants, weighing less than 1250 g and aged less than 28 weeks, participated. Outcome measures included medical, neurodevelopmental and family function. Quality of care was also assessed. Multivariate analysis of variance investigated group, site, and interaction effects; correlation analysis identified individual variable contributions to significant effects. The results consistently favored the experimental groups. The following contributed to the group effects: shorter duration of parenteral feeding, transition to full oral feeding, intensive care, and hospitalization; lower incidence of necrotizing enterocolitis; reduced discharge ages and hospital charges; improved weight, length, and head circumferences; enhanced autonomic, motor, state, attention, and self-regulatory functioning; reduced need for facilitation; and lowered family stress and enhanced appreciation of the infant. Quality of care was measurably improved. Very low birth weight infants and their parents, across diverse settings, may benefit from individualized developmental care.
- Published
- 2003
21. Failure of recombinant vaccinia viruses expressing Plasmodium falciparum antigens to protect Saimiri monkeys against malaria
- Author
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Pye, D, primary, Edwards, S J, additional, Anders, R F, additional, O'Brien, C M, additional, Franchina, P, additional, Corcoran, L N, additional, Monger, C, additional, Peterson, M G, additional, Vandenberg, K L, additional, and Smythe, J A, additional
- Published
- 1991
- Full Text
- View/download PDF
22. Revisiting Imitation Pedagogies in Composition Studies from a Girardian Perspective
- Author
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Vandenberg, Kathleen M.
- Published
- 2011
- Full Text
- View/download PDF
23. René Girard and the Rhetoric of Consumption
- Author
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Vandenberg, Kathleen M.
- Published
- 2008
- Full Text
- View/download PDF
24. What should the aussies do? chemotherapy induced nausea and vomiting prevention in children and adolescents.
- Author
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Vandenberg K., Walshe K., Vandenberg K., and Walshe K.
- Abstract
Introduction Chemotherapy induced nausea and vomiting (CINV) continues to be a distressing side effect of paediatric cancer treatment. It is estimated that 70%-80%of patients experience nausea and vomiting. Successful control of CINV upfront is vital, complete control during the acute phase reduces the incidence of CINV in the delayed phase and importantly is associated with reduced incidence in subsequent chemotherapy cycles. Internationally, significant changes have been made to CINV prevention guidelines. Compliance with these recommendations represents a major challenge in improving CINV outcomes in children with cancer. With new evidence supporting the use of NK1 antagonists, newer 5HT-3 antagonists and options for breakthrough CINV in children, these recommendations need to be explored for appropriateness of implementation at a local level. Methods A literature review was undertaken to identify studies that evaluated antiemetics for prevention of CINV in paediatric oncology patients with a focus on new agents and publications in the last 5 years. Results Recent guidelines make recommendations for the use of antiemetics according to the emetic potential of the chemotherapy. NK1 antagonist aprepitant and 5HT-3 antagonist palonosetron are included in these guidelines for prevention of acute nausea and vomiting. Atypical antipsychotics olanzapine and levomepromazine are new additions for the management of breakthrough and refractory CINV. Conclusions Recommendations are made for the prevention of CINV in children in the Australian context.
25. What should the aussies do? chemotherapy induced nausea and vomiting prevention in children and adolescents.
- Author
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Vandenberg K., Walshe K., Vandenberg K., and Walshe K.
- Abstract
Introduction Chemotherapy induced nausea and vomiting (CINV) continues to be a distressing side effect of paediatric cancer treatment. It is estimated that 70%-80%of patients experience nausea and vomiting. Successful control of CINV upfront is vital, complete control during the acute phase reduces the incidence of CINV in the delayed phase and importantly is associated with reduced incidence in subsequent chemotherapy cycles. Internationally, significant changes have been made to CINV prevention guidelines. Compliance with these recommendations represents a major challenge in improving CINV outcomes in children with cancer. With new evidence supporting the use of NK1 antagonists, newer 5HT-3 antagonists and options for breakthrough CINV in children, these recommendations need to be explored for appropriateness of implementation at a local level. Methods A literature review was undertaken to identify studies that evaluated antiemetics for prevention of CINV in paediatric oncology patients with a focus on new agents and publications in the last 5 years. Results Recent guidelines make recommendations for the use of antiemetics according to the emetic potential of the chemotherapy. NK1 antagonist aprepitant and 5HT-3 antagonist palonosetron are included in these guidelines for prevention of acute nausea and vomiting. Atypical antipsychotics olanzapine and levomepromazine are new additions for the management of breakthrough and refractory CINV. Conclusions Recommendations are made for the prevention of CINV in children in the Australian context.
26. An ELISA-based assay for determining haemagglutinin potency in egg, cell, or recombinant protein derived influenza vaccines.
- Author
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Bodle J, Vandenberg K, Laurie K, Barr IG, Zhang Y, and Rockman S
- Subjects
- Animals, Humans, Antibodies, Monoclonal chemistry, Antibodies, Monoclonal immunology, Hemagglutinin Glycoproteins, Influenza Virus, Immune Sera, Influenza, Human prevention & control, Mammals, Enzyme-Linked Immunosorbent Assay methods, Hemagglutinins chemistry, Influenza Vaccines chemistry, Influenza Vaccines immunology, Influenza Vaccines therapeutic use, Recombinant Proteins chemistry, Recombinant Proteins metabolism, Eggs, Cells chemistry, Cells immunology
- Abstract
Background: The current compendial assay for haemagglutinin antigen potency in influenza vaccine is the single radial immunodiffusion (SRID) which is time consuming and can lead to delays in release of vaccine. We previously described an alternate capture and detection enzyme linked immunoassay (ELISA) that utilizes sub-type specific, sub-clade cross-reactive monoclonal antibodies (mAbs) that are haemagglutination inhibiting (HAI) and correlate with SRID. The aim of this study is to determine the applicability of ELISA across current platforms for quantitation of seasonal quadrivalent vaccine., Methods: A single mAb capture and detection ELISA was employed to quantitate hemagglutinin (HA) derived from different vaccine platforms and host organisms and compared to SRID and a polyclonal antibody based ELISA., Results: We selected mAbs that displayed appropriate characteristics for a stability indicating potency assay which reacted to avian, insect and mammalian derived HA. Qualification of the homologous mAb assay against egg and cell derived HA demonstrated performance similar to that of the SRID however, superiority in sensitivity and specificity against strains from both influenza B/Victoria and B/Yamagata lineages. Analysis of drifted strains across multiple seasons demonstrated continued utility of this approach, reducing the need to develop reagents each season. With modification of the assay, we were able to accurately measure HA from different platforms and process stages using a single calibrated reference standard. We demonstrated the accuracy of ELISA when testing vaccine formulations containing selected adjuvants at standard and higher concentrations. Accelerated stability analysis indicated a strong correlation in the rate of degradation between the homologous mAb ELISA and SRID but not with ELISA utilizing polyclonal antisera. Further, we demonstrated specificity was restricted to the trimeric and oligomeric forms of HA but not monomeric HA., Conclusion: We believe this homologous mAb ELISA is a suitable replacement for the SRID compendial assay for HA antigen quantitation and stability assessment. Identification of suitable mAbs that are applicable across multiple vaccine platforms with extended sub-type reactivity across a number of influenza seasons, indicate that this assay has broad applicability, leading to earlier availability of seasonal and pandemic vaccines without frequent replacement of polyclonal antisera that is required with SRID., Competing Interests: Authors JB, SR, KL, YZ and KV are employed by CSL Seqirus Ltd. All authors declare no other competing interests. IB, JB and SR own a small number of shares in CSL Ltd. The WHO Collaborating Centre for Reference and Research on Influenza has received funding from CSL Ltd. for performing serology and other contract research work that was not related to this current publication., (Copyright © 2023 Bodle, Vandenberg, Laurie, Barr, Zhang and Rockman.)
- Published
- 2023
- Full Text
- View/download PDF
27. Potency Testing of Venoms and Antivenoms in Embryonated Eggs: An Ethical Alternative to Animal Testing.
- Author
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Verity EE, Stewart K, Vandenberg K, Ong C, and Rockman S
- Subjects
- Animals, Chick Embryo, Elapid Venoms immunology, Elapid Venoms toxicity, Elapidae, Lethal Dose 50, Animal Testing Alternatives, Antivenins pharmacology, Elapid Venoms antagonists & inhibitors
- Abstract
Venoms are complex mixtures of biologically active molecules that impact multiple physiological systems. Manufacture of antivenoms (AVs) therefore requires potency testing using in vivo models to ensure AV efficacy. As part of ongoing research to replace small animals as the standard model for AV potency testing, we developed an alternate in vivo method using the embryonated egg model (EEM). In this model, the survival of chicken embryos envenomated in ovo is determined prior to 50% gestation, when they are recognized as animals by animal welfare legislation. Embryos were found to be susceptible to a range of snake, spider, and marine venoms. This included funnel-web spider venom for which the only other vertebrate, non-primate animal model is newborn mice. Neutralization of venom with standard AV allowed correlation of AV potency results from the EEM to results from animal assays. Our findings indicate that the EEM provides an alternative, insensate in vivo model for the assessment of AV potency. The EEM may enable reduction or replacement of the use of small animals, as longer-term research that enables the elimination of animal use in potency testing continues.
- Published
- 2021
- Full Text
- View/download PDF
28. Intravenous Immunoglobulin Protects Against Severe Pandemic Influenza Infection.
- Author
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Rockman S, Lowther S, Camuglia S, Vandenberg K, Taylor S, Fabri L, Miescher S, Pearse M, Middleton D, Kent SJ, and Maher D
- Subjects
- Animals, Cytokines genetics, Ferrets, Humans, Lung virology, Pandemics prevention & control, RNA, Messenger metabolism, Viral Load, Virus Replication, Antibodies, Viral therapeutic use, Immunoglobulins, Intravenous therapeutic use, Influenza A Virus, H1N1 Subtype immunology, Influenza A Virus, H1N1 Subtype physiology, Influenza A Virus, H5N1 Subtype immunology, Influenza A Virus, H5N1 Subtype physiology, Orthomyxoviridae Infections prevention & control
- Abstract
Influenza is a highly contagious, acute, febrile respiratory infection that can have fatal consequences particularly in individuals with chronic illnesses. Sporadic reports suggest that intravenous immunoglobulin (IVIg) may be efficacious in the influenza setting. We investigated the potential of human IVIg to ameliorate influenza infection in ferrets exposed to either the pandemic H1N1/09 virus (pH1N1) or highly pathogenic avian influenza (H5N1). IVIg administered at the time of influenza virus exposure led to a significant reduction in lung viral load following pH1N1 challenge. In the lethal H5N1 model, the majority of animals given IVIg survived challenge in a dose dependent manner. Protection was also afforded by purified F(ab')
2 but not Fc fragments derived from IVIg, supporting a specific antibody-mediated mechanism of protection. We conclude that pre-pandemic IVIg can modulate serious influenza infection-associated mortality and morbidity. IVIg could be useful prophylactically in the event of a pandemic to protect vulnerable population groups and in the critical care setting as a first stage intervention., (Copyright © 2017 The Authors. Published by Elsevier B.V. All rights reserved.)- Published
- 2017
- Full Text
- View/download PDF
29. Circulating precursor CCR7(lo)PD-1(hi) CXCR5⁺ CD4⁺ T cells indicate Tfh cell activity and promote antibody responses upon antigen reexposure.
- Author
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He J, Tsai LM, Leong YA, Hu X, Ma CS, Chevalier N, Sun X, Vandenberg K, Rockman S, Ding Y, Zhu L, Wei W, Wang C, Karnowski A, Belz GT, Ghali JR, Cook MC, Riminton DS, Veillette A, Schwartzberg PL, Mackay F, Brink R, Tangye SG, Vinuesa CG, Mackay CR, Li Z, and Yu D
- Subjects
- Animals, Antigens immunology, B-Lymphocytes immunology, B-Lymphocytes pathology, B-Lymphocytes virology, Cell Differentiation, DNA-Binding Proteins genetics, DNA-Binding Proteins immunology, Gene Expression, Germinal Center immunology, Germinal Center pathology, Germinal Center virology, Humans, Immunity, Humoral, Immunophenotyping, Inducible T-Cell Co-Stimulator Protein genetics, Inducible T-Cell Co-Stimulator Protein immunology, Mice, Programmed Cell Death 1 Receptor genetics, Proto-Oncogene Proteins c-bcl-6, Receptors, CXCR genetics, Receptors, CXCR5 genetics, T-Lymphocytes, Helper-Inducer pathology, T-Lymphocytes, Helper-Inducer virology, Antibodies immunology, Immunologic Memory, Programmed Cell Death 1 Receptor immunology, Receptors, CXCR immunology, Receptors, CXCR5 immunology, T-Lymphocytes, Helper-Inducer immunology
- Abstract
Follicular B helper T (Tfh) cells support high affinity and long-term antibody responses. Here we found that within circulating CXCR5⁺ CD4⁺ T cells in humans and mice, the CCR7(lo)PD-1(hi) subset has a partial Tfh effector phenotype, whereas CCR7(hi)PD-1(lo) cells have a resting phenotype. The circulating CCR7(lo)PD-1(hi) subset was indicative of active Tfh differentiation in lymphoid organs and correlated with clinical indices in autoimmune diseases. Thus the CCR7(lo)PD-1(hi) subset provides a biomarker to monitor protective antibody responses during infection or vaccination and pathogenic antibody responses in autoimmune diseases. Differentiation of both CCR7(hi)PD-1(lo) and CCR7(lo)PD-1(hi) subsets required ICOS and BCL6, but not SAP, suggesting that circulating CXCR5⁺ helper T cells are primarily generated before germinal centers. Upon antigen reencounter, CCR7(lo)PD-1(hi) CXCR5⁺ precursors rapidly differentiate into mature Tfh cells to promote antibody responses. Therefore, circulating CCR7(lo)PD-1(hi) CXCR5⁺ CD4⁺ T cells are generated during active Tfh differentiation and represent a new mechanism of immunological early memory., (Copyright © 2013 Elsevier Inc. All rights reserved.)
- Published
- 2013
- Full Text
- View/download PDF
30. Development of an enzyme-linked immunoassay for the quantitation of influenza haemagglutinin: an alternative method to single radial immunodiffusion.
- Author
-
Bodle J, Verity EE, Ong C, Vandenberg K, Shaw R, Barr IG, and Rockman S
- Subjects
- Antibodies, Monoclonal isolation & purification, Enzyme-Linked Immunosorbent Assay methods, Horseradish Peroxidase metabolism, Humans, Immunodiffusion methods, Hemagglutinin Glycoproteins, Influenza Virus analysis, Influenza Vaccines chemistry, Influenza Vaccines standards, Technology, Pharmaceutical methods
- Abstract
Background: The current method used to measure haemagglutinin (HA) content for influenza vaccine formulation, single radial immunodiffusion (SRID), is lengthy and relies on the availability of matched standardised homologous reagents. The 2009 influenza pandemic highlighted the need to develop alternate assays that are able to rapidly quantitate HA antigen for vaccine formulation., Objectives: The aim of this work was to develop an enzyme-linked immunoassay (EIA) for the rapid quantitation of H1, H3, H5 and B influenza HA antigens., Methods: Monoclonal antibodies (mAbs) selected for haemagglutination inhibition (HAI) activity were conjugated with horseradish peroxidase and used to establish a capture-detection EIA for the quantitation of HA antigen. Results were compared with the appropriate reference SRID assays to investigate assay performance and utility., Results: Quantitation of HA antigen by EIA correlated well with current reference SRID assays. EIA results showed equivalent precision and exhibited a similar capacity to detect HA antigen in virus samples that had been used in either stability or splitting studies, or subjected to physical or chemical stresses. EIA exhibited greater sensitivity than SRID and has the potential to be used in high-throughput applications., Conclusions: We demonstrated the utility of EIA as a suitable alternative to SRID for HA antigen quantitation and stability assessment. This approach would lead to earlier availability of both seasonal and pandemic vaccines, because of the extended cross-reactivity of reagents., (© 2012 Blackwell Publishing Ltd.)
- Published
- 2013
- Full Text
- View/download PDF
31. Paper based point-of-care testing disc for multiplex whole cell bacteria analysis.
- Author
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Li CZ, Vandenberg K, Prabhulkar S, Zhu X, Schneper L, Methee K, Rosser CJ, and Almeide E
- Subjects
- Antibodies, Bacterial, Antibodies, Immobilized, Bacterial Infections diagnosis, Bacteriological Techniques instrumentation, Biosensing Techniques instrumentation, Equipment Design, Gold, Humans, Metal Nanoparticles, Paper, Pseudomonas aeruginosa immunology, Pseudomonas aeruginosa isolation & purification, Staphylococcus aureus immunology, Staphylococcus aureus isolation & purification, Bacteriological Techniques methods, Biosensing Techniques methods, Point-of-Care Systems
- Abstract
Point-of-care testing (POCT) of infectious bacterial agents offers substantial benefits for disease diagnosis, mainly by shortening the time required to obtain results and by making the test available bedside or at remote care centers. Immunochromatographic lateral flow biosensors offer a low cost, highly sensitive platform for POCT. In this article, we describe the fabrication and testing of a multiplex immuno-disc sensor for the specific detection of Pseudomonas aeruginosa and Staphylococcus aureus. Antibody conjugated gold nanoparticles were used as the signaling agents. The detection range of the bacteria lies within 500-5000 CFU/ml. The advantage of the immuno-disc sensor is that it does not require any preprocessing of biological sample and is capable of whole cell bacterial detection. We also describe the design and fabrication of a compact portable device which converts the color intensity of the gold nanoparticles that accumulate at the test region into a quantitative voltage reading proportional to the bacterial concentration in the sample. The combination of the immuno-disc and the portable color reader provides a rapid, sensitive, low cost, and quantitative tool for the detection of a panel of infectious agents present in the patient sample., (Copyright © 2011 Elsevier B.V. All rights reserved.)
- Published
- 2011
- Full Text
- View/download PDF
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