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Yin MXC, Du LB, Zou XN, Fung YL, Sun YY, Chan CHY, Chan CLW. Can Psychosocial Intervention Suppress Testosterone and Triglycerides Among Women With Polycystic Ovary Syndrome? A Feasibility Trial. Front Psychol 2021; 12:690539. [PMID: 34367014 PMCID: PMC8339270 DOI: 10.3389/fpsyg.2021.690539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 04/07/2021] [Accepted: 06/25/2021] [Indexed: 11/13/2022] Open
Abstract
Women with polycystic ovary syndrome (PCOS) suffer significant psychological distress, which may activate the hypothalamus-pituitary-ovary axis and further affect their physiological state. They often experience elevated levels of testosterone and triglycerides. Considering reports of psychological distress among women with PCOS, this study aimed to develop a psychosocial intervention to improve their emotional and physical health, particularly in Chinese society. This pilot study employed the Integrative Body-Mind-Spirit (I-BMS) intervention model for women with PCOS in China. After a 2 h health information session, 18 participants were randomly assigned to the I-BMS group (9) or the control group (9). The intervention group received 6 weekly, 3 h I-BMS sessions. Pre- and post-blood tests and psychosocial questionnaires were collected from all participants. Retention to treatment was high with 79.6% treatment adherence gained and an overall average of five sessions completed. Compared with the control group, depression and anxiety symptoms reduced significantly for those in the intervention group (d = -1.24, p < 0.05 and d = -1.33, p < 0.01), their health-related quality of life improved significantly (d = 1.02, p < 0.01) both at post-intervention and 3 month follow-up, and their testosterone and triglycerides levels reduced significantly (d = -0.97, p < 0.001 and d = -0.41, p < 0.05) after joining the intervention. The I-BMS model is feasible and appears promising in improving psychological health, and reducing testosterone and triglyceride levels, in women with PCOS in China. Clinical Trial Registration: www.chictr.org.cn, identifier ChiCTR1900027606.
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Affiliation(s)
- Margaret X. C. Yin
- Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China
| | - L. B. Du
- Reproductive Medicine Center, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - X. N. Zou
- Kids Caring Corner, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Y. L. Fung
- Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China
| | - Y. Y. Sun
- Kids Caring Corner, The University of Hong Kong-Shenzhen Hospital, Shenzhen, China
| | - Celia H. Y. Chan
- Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China
- Centre on Behavioral Health, The University of Hong Kong, Hong Kong, China
| | - Cecilia L. W. Chan
- Department of Social Work and Social Administration, The University of Hong Kong, Hong Kong, China
- Centre on Behavioral Health, The University of Hong Kong, Hong Kong, China
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Fung YL, Lau BHP, Tam MYJ, Xie Q, Chan CLW, Chan CHY. Protocol for Psychosocial Interventions Based on Integrative Body-Mind-Spirit (IBMS) Model for Children with Eczema and Their Parent Caregivers. J Evid Based Soc Work (2019) 2019; 16:36-53. [PMID: 30451604 DOI: 10.1080/23761407.2018.1545618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Purpose: Eczema is a pediatric skin disease that affects the psychosocial well-being of both children and their parent caregivers. This paper outlines a protocol for an experimental study that evaluates the effectiveness of a psychosocial empowerment program for children with eczema and their parent caregivers. Method: A multi-center randomized controlled trial is proposed, where parent-child dyads are randomized into two arms: an intervention group and wait-list control group. The intervention is delivered to participants in a parallel group format based on the Integrative Body-Mind-Spirit model which focuses on holistic well-being. Quality of life is measured before and after the intervention is provided, and five weeks after the intervention has been completed. Discussion: The suggested model fills a research gap in existing interventions, and provides new knowledge by evaluating the effectiveness of a tailored psychosocial intervention, delivered in group settings, for parent-child dyads affected by eczema.
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Affiliation(s)
- Y L Fung
- Department of Social Work and Social Administration, University of Hong Kong, Hong Kong, Hong Kong
| | - Bobo Hi Po Lau
- Department of Social Work and Social Administration, University of Hong Kong, Hong Kong, Hong Kong
| | - Michelle Yi Jun Tam
- Department of Social Work and Social Administration, University of Hong Kong, Hong Kong, Hong Kong
| | - Qianwen Xie
- Department of Social Work and Social Administration, University of Hong Kong, Hong Kong, Hong Kong
| | - Cecilia L W Chan
- Department of Social Work and Social Administration, University of Hong Kong, Hong Kong, Hong Kong
| | - Celia H Y Chan
- Department of Social Work and Social Administration, University of Hong Kong, Hong Kong, Hong Kong
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3
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Affiliation(s)
- Y. L. Fung
- School of Health & Sports Sciences; University of Sunshine Coast; Sunshine Coast QLD Australia
| | - J.P. Tung
- Research and Development; Australian Red Cross Blood Service; Kelvin Grove QLD Australia
- Critical Care Research Group; University of Queensland and The Prince Charles Hospital; Brisbane QLD Australia
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4
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Pearse BL, Smith I, Faulke D, Wall D, Fraser JF, Ryan EG, Drake L, Rapchuk IL, Tesar P, Ziegenfuss M, Fung YL. Protocol guided bleeding management improves cardiac surgery patient outcomes. Vox Sang 2015; 109:267-79. [PMID: 25930098 DOI: 10.1111/vox.12279] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Revised: 02/19/2015] [Accepted: 02/27/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND OBJECTIVES Excessive bleeding is a risk associated with cardiac surgery. Treatment invariably requires transfusion of blood products; however, the transfusion itself may contribute to postoperative sequelae. Our objective was to analyse a quality initiative designed to provide an evidenced-based approach to bleeding management. MATERIALS AND METHODS A retrospective analysis compared blood product transfusion and patient outcomes 15 months before and after implementation of a bleeding management protocol. The protocol incorporated point-of-care coagulation testing (POCCT) with ROTEM and Multiplate to diagnose the cause of bleeding and monitor treatment. RESULTS Use of the protocol led to decreases in the incidence of transfusion of PRBCs (47·3% vs. 32·4%; P < 0·0001), FFP (26·9% vs. 7·3%; P < 0·0001) and platelets (36·1% vs. 13·5%; P < 0·0001). During the intra-operative period, the percentage of patients receiving cryoprecipitate increased (2·7% vs. 5·1%; P = 0·002), as did the number of units transfused (248 vs. 692; P < 0·0001). The proportion of patients who received tranexamic acid increased (13·7% to 68·2%; P < 0·0001). There were reductions in re-exploration for bleeding (5·6% vs. 3·4; P = 0·01), superficial chest wound (3·3% vs. 1·4%; P = 0·002), leg wound infection (4·6% vs. 2·0%; P < 0·0001) and a 12% reduction in mean length of stay from operation to discharge (95%: 9-16%, P < 0·0001). Acquisition cost of blood products decreased by $1 029 118 in the 15-month period with the protocol. CONCLUSIONS The implementation of a bleeding management protocol supported by POCCT in a cardiac surgery programme was associated with significant reductions in the transfusion of allogeneic blood products, improved outcomes and reduced cost.
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Affiliation(s)
- B L Pearse
- Department of Anesthesia, The Prince Charles Hospital, Brisbane, Qld, Australia.,Department of Cardiac Surgery, The Prince Charles Hospital, Brisbane, Qld, Australia.,Adult Intensive Care Service, The Prince Charles Hospital, Brisbane, Qld, Australia.,Center of Health Practice Innovation, Griffith University, Brisbane, Qld, Australia
| | - I Smith
- Department of Anesthesia, The Prince Charles Hospital, Brisbane, Qld, Australia
| | - D Faulke
- Department of Anesthesia, The Prince Charles Hospital, Brisbane, Qld, Australia
| | - D Wall
- Department of Cardiac Surgery, The Prince Charles Hospital, Brisbane, Qld, Australia
| | - J F Fraser
- Adult Intensive Care Service, The Prince Charles Hospital, Brisbane, Qld, Australia.,Critical Care Research Group, The Prince Charles Hospital, Brisbane, Qld, Australia
| | - E G Ryan
- School of Mathematical Sciences, Queensland University of Technology, Brisbane, Qld, Australia.,Biostatistics Department, King's College London, Denmark Hill, UK
| | - L Drake
- Cardiac Surgery Clinical Information Service, The Prince Charles Hospital, Brisbane, Qld, Australia
| | - I L Rapchuk
- Department of Anesthesia, The Prince Charles Hospital, Brisbane, Qld, Australia
| | - P Tesar
- Department of Cardiac Surgery, The Prince Charles Hospital, Brisbane, Qld, Australia
| | - M Ziegenfuss
- Adult Intensive Care Service, The Prince Charles Hospital, Brisbane, Qld, Australia.,Critical Care Research Group, The Prince Charles Hospital, Brisbane, Qld, Australia
| | - Y L Fung
- Center of Health Practice Innovation, Griffith University, Brisbane, Qld, Australia.,Inflammation and Healing Research Cluster, School of Health & Sports Sciences, University of Sunshine Coast, Sunshine Coast, Qld, Australia
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Fung YL, Chan Z, Chien WT. Role performance of psychiatric nurses in advanced practice: a systematic review of the literature. J Psychiatr Ment Health Nurs 2014; 21:698-714. [PMID: 24299195 DOI: 10.1111/jpm.12128] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/07/2013] [Indexed: 11/28/2022]
Abstract
This paper discusses findings from a systematic review of literature pertaining to the role performance of psychiatric nurses in advanced practice. A search of 11 electronic databases was conducted to identify research involving interventions by psychiatric (or mental health) nurses in advanced practice. A total of 14 studies were identified. In this review, the role performance of psychiatric nurses in advanced practice was categorized into three themes: (1) the provision of psychosocial interventions; (2) the provision of nurse-directed services in health-care contexts; and (3) the provision of psychiatric nursing consultation services. Our results document that psychiatric nurses in advanced practice perform multifaceted roles and provide mental health-care services in various contexts. This systematic review reveals that the nurses obtain significant results in managing clients with depression and psychological stress, and demonstrates their value when developing partnerships with non-mental health service providers. One study, however, showed that the nurses had insignificant results in performing transitional care for pre-discharged mental health service users.
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Affiliation(s)
- Y L Fung
- Department of Child and Adolescent Psychiatry, Castle Peak Hospital, Hong Kong
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McDonald CI, Fraser JF, Shekar K, Dunster KR, Thom O, Fung YL. Transfusion of packed red blood cells reduces selenium levels and increases lipid peroxidation in anin vivoovine model. Transfus Med 2013; 24:50-4. [DOI: 10.1111/tme.12087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. I. McDonald
- Critical Care Research Group; The University of Queensland and The Prince Charles Hospital; Chermside 4032 Australia
- Department of Anaesthesia and Perfusion; The Prince Charles Hospital; Chermside 4032 Australia
| | - J. F. Fraser
- Critical Care Research Group; The University of Queensland and The Prince Charles Hospital; Chermside 4032 Australia
- Adult Intensive Care Unit; The Prince Charles Hospital; Chermside 4032 Australia
| | - K. Shekar
- Critical Care Research Group; The University of Queensland and The Prince Charles Hospital; Chermside 4032 Australia
- Adult Intensive Care Unit; The Prince Charles Hospital; Chermside 4032 Australia
| | - K. R. Dunster
- Critical Care Research Group; The University of Queensland and The Prince Charles Hospital; Chermside 4032 Australia
| | - O. Thom
- Critical Care Research Group; The University of Queensland and The Prince Charles Hospital; Chermside 4032 Australia
- Department of Emergency Medicine; The Princess Alexandra Hospital; Woolloongabba Queensland Australia
| | - Y. L. Fung
- Critical Care Research Group; The University of Queensland and The Prince Charles Hospital; Chermside 4032 Australia
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7
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Simonova G, Tung JP, Fraser JF, Do HL, Staib A, Chew MS, Dunster KR, Glenister KM, Jackson DE, Fung YL. A comprehensive ovine model of blood transfusion. Vox Sang 2013; 106:153-60. [PMID: 23992472 DOI: 10.1111/vox.12076] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 07/18/2013] [Accepted: 08/05/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND The growing awareness of transfusion-associated morbidity and mortality necessitates investigations into the underlying mechanisms. Small animals have been the dominant transfusion model but have associated limitations. This study aimed to develop a comprehensive large animal (ovine) model of transfusion encompassing: blood collection, processing and storage, compatibility testing right through to post-transfusion outcomes. MATERIALS AND METHODS Two units of blood were collected from each of 12 adult male Merino sheep and processed into 24 ovine-packed red blood cell (PRBC) units. Baseline haematological parameters of ovine blood and PRBC cells were analysed. Biochemical changes in ovine PRBCs were characterized during the 42-day storage period. Immunological compatibility of the blood was confirmed with sera from potential recipient sheep, using a saline and albumin agglutination cross-match. Following confirmation of compatibility, each recipient sheep (n = 12) was transfused with two units of ovine PRBC. RESULTS Procedures for collecting, processing, cross-matching and transfusing ovine blood were established. Although ovine red blood cells are smaller and higher in number, their mean cell haemoglobin concentration is similar to human red blood cells. Ovine PRBC showed improved storage properties in saline-adenine-glucose-mannitol (SAG-M) compared with previous human PRBC studies. Seventy-six compatibility tests were performed and 17·1% were incompatible. Only cross-match compatible ovine PRBC were transfused and no adverse reactions were observed. CONCLUSION These findings demonstrate the utility of the ovine model for future blood transfusion studies and highlight the importance of compatibility testing in animal models involving homologous transfusions.
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Affiliation(s)
- G Simonova
- Critical Care Research Group, The University of Queensland and The Prince Charles Hospital, Brisbane, Qld, Australia; Research and Development, Australian Red Cross Blood Service, Brisbane, Qld, Australia
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8
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Lucas G, Porcelijn L, Fung YL, Green F, Reil A, Hopkins M, Schuller R, Green A, de Haas M, Bux J. External quality assessment of human neutrophil antigen (HNA)-specific antibody detection and HNA genotyping from 2000 to 2012. Vox Sang 2013; 105:259-69. [PMID: 23663230 DOI: 10.1111/vox.12041] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 03/14/2013] [Accepted: 03/19/2013] [Indexed: 11/30/2022]
Abstract
Since 2000, Quality Assurance (QA) exercises for the detection and identification of granulocyte antibodies and DNA typing for human neutrophil antigens (HNA) have been distributed within the International Granulocyte Immunobiology Workshops, which are linked to International Society of Blood Transfusion. The exercises were standardised at the outset to enable laboratory performance to be monitored. Between 2000 and 2012, nine exercises were distributed to 20 laboratories. Overall, 45 examples of 42 unique samples containing defined granulocyte reactive antibodies were distributed for serological analysis together with 20 samples for HNA genotyping. The level of satisfactory serological performance was initially set at 50% and later increased to 70%, while the 'cut-off' for HNA genotyping was set at 100% after 2008. Failure to achieve the minimum score in the QA exercises in consecutive years resulted in temporary exclusion. In 2000, the 15 participating laboratories had a mean score of 56.1% for serological analysis and 13 laboratories attempted HNA-1a and -1b genotyping, while 11 attempted HNA-1c typing. Steady improvements in proficiency for serological testing and HNA typing occurred in subsequent exercises. In 2012, the mean score for serology was 88.5% and 12/13 laboratories scored 100% for HNA-1a, -1b, -1c, -3a, -3b, -4a, -4bw, -5a and -5bw genotyping. These QA exercises have provided an invaluable tool to monitor and improve the standard of granulocyte immunology investigations for participating laboratories, thereby enhancing performance for both clinical investigations and donor screening programmes to reduce the incidence of TRALI.
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Affiliation(s)
- G Lucas
- Histocompatibility and Immunogenetics, NHS Blood and Transplant, Bristol, UK
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Fung YL, Tung JP, Foley SR, Simonova G, Thom O, Staib A, Collier J, Dunster KR, Solano C, Shekar K, Chew MS, Fraser JF. Stored blood transfusion induces transient pulmonary arterial hypertension without impairing coagulation in an ovine model of nontraumatic haemorrhage. Vox Sang 2013; 105:150-8. [PMID: 23458181 DOI: 10.1111/vox.12032] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 01/21/2013] [Accepted: 01/22/2013] [Indexed: 12/01/2022]
Abstract
BACKGROUND AND OBJECTIVES Transfusion of blood products in particular older products is associated with patient morbidity. Previously, we demonstrated a higher incidence of acute lung injury in lipopolysaccharide-treated sheep transfused with stored blood products. As transfusion following haemorrhage is more common, we aimed to determine whether a 'first hit' of isolated haemorrhage would precipitate similar detrimental effects following transfusion and also disrupt haemostasis. MATERIALS AND METHODS Anaesthetized sheep had 33% of their total blood volume collected into Leukotrap bags (Pall Medical), which were processed into packed red blood cells and cross-matched for transfusion into other sheep. After 30 mins, the sheep were resuscitated with either: fresh (<5 days old) or stored (35-42 days old) ovine blood followed by 4% albumin to replacement volume, albumin alone or normal saline alone and monitored for 4 h. RESULTS The first hit of haemorrhage precipitated substantial decreases in mean arterial pressure however haemostasis was preserved. Transfusion of stored ovine blood induced (1) transient pulmonary arterial hypertension but no oedema and (2) reduced fibrinogen levels more than fresh blood, but neither induced coagulopathy. Thus, transfusion of stored blood affected pulmonary function even in the absence of overt organ injury. CONCLUSION The fact that stored blood transfusions: (1) did not induce acute lung injury in contrast to previous lipopolysaccharide-primed animal models identifies the 'first hit' as an important determinant of the severity of transfusion-mediated injury; (2) impaired pulmonary dynamics verifies the sensitivity and vulnerability of the pulmonary system to injury.
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Affiliation(s)
- Y L Fung
- Critical Care Research Group, University of Queensland and The Prince Charles Hospital, Brisbane, QLD, Australia.
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Fraser JF, Shekar K, Diab S, Dunster K, Foley SR, McDonald CI, Passmore M, Simonova G, Roberts JA, Platts DG, Mullany DV, Fung YL. ECMO - the clinician’s view. ACTA ACUST UNITED AC 2012. [DOI: 10.1111/j.1751-2824.2012.01560.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fung YL, Diab S, Dunster K, Foley SR, McDonald CI, Passmore M, Platts D, Simonova G, Shekar K, Stewart D, Fraser JF. Extracorporeal lessons from sheep. ACTA ACUST UNITED AC 2012. [DOI: 10.1111/j.1751-2824.2012.01561.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
BACKGROUND AND OBJECTIVES Severe transfusion-related acute lung injury (TRALI) events have been linked to donor-derived neutrophil antibodies. The journey to developing mass donor neutrophil antibody screening platforms is challenged by the fragility of neutrophils and their unique-specific antigenic characteristics. MATERIAL AND METHODS This article critically evaluates the capabilities and potential of five emerging antibody screening platforms designed to detect neutrophil reactive antibodies relevant to TRALI. They are compared with established neutrophil serological methods. RESULTS Data from two recombinant antigen platforms and a method using human neutrophil antigens-expressing KY cells indicated high specificity. Two mixed cellular flow cytometric assays have the advantage of presenting native conformation of the human polymorphonuclear neutrophil antigenic epitopes. CONCLUSIONS To date, the number and specificity of test sera applied to each platform is small. This needs to be substantially increased and further rigorous serological evaluation is yet needed to compare the sensitivity and specificity limits of each new platform with classical methods. With a limited world supply of TRALI-relevant test sera, a collaborative effort of laboratories with neutrophil and TRALI investigation expertise is required.
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Affiliation(s)
- Y L Fung
- The Critical Care Research Group, The Prince Charles Hospital, The University of Queensland, Brisbane, Qld, Australia
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13
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Lopez GH, Dean MM, Yasui K, Schuller RM, Hirayama F, Fung YL. A standardized immunofluorescence test method with human neutrophil antigen-expressing cell lines to enhance antibody detection. Vox Sang 2011; 102:171-4. [PMID: 21883271 DOI: 10.1111/j.1423-0410.2011.01532.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There is an international need for a large-scale human neutrophils antigen (HNA) antibody screening platform to minimize the risk of antibody-mediated transfusion-related acute lung injury. However, sourcing a substantial, reliable source of HNA, as well as the scarcity of well-characterized HNA antisera for validating new screening platforms, remain as major obstacles. This short communication presents an improved protocol for the effective use of HNA-expressing KY cells as a screening platform using eight well-characterized HNA antisera of a single defined specificity.
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Affiliation(s)
- G H Lopez
- Australian Red Cross Blood Service, Brisbane, Qld, Australia
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14
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Tung JP, Fung YL, Nataatmadja M, Colebourne KI, Esmaeel HM, Wilson K, Barnett AG, Wood P, Silliman CC, Fraser JF. A novel in vivo ovine model of transfusion-related acute lung injury (TRALI). Vox Sang 2011; 100:219-30. [PMID: 20667072 DOI: 10.1111/j.1423-0410.2010.01381.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVES Even with the introduction of specific risk-reduction strategies, transfusion-related acute lung injury (TRALI) continues to be a leading cause of transfusion-related morbidity and mortality. Existing small animal models have not yet investigated TRALI resulting from the infusion of heat-treated supernatant from whole blood platelet concentrates. In this study, our objective was the development of a novel in vivo two-event model of TRALI in sheep. MATERIALS AND METHODS Lipopolysaccharide (LPS; 15 μg/kg) as a first event, modelled clinical infection. Transfusion (estimated at 10% of total blood volume) of heat-treated pooled supernatant from date-of-expire human whole blood platelet concentrates (d5-PLT-S/N) was used as a second event. TRALI was defined by both hypoxaemia that developed either during the transfusion or within two hours of its completion and post-mortem histological evidence of pulmonary oedema. RESULTS LPS infusion did not cause lung injury itself, but did result in decreased circulating levels of lymphocytes and neutrophils with evidence of the latter becoming sequestered in the lungs. Sheep that received LPS (first event) followed by d5-PLT-S/N (second event) displayed decreased pulmonary compliance, decreased end tidal CO(2) and increased arterial partial pressure of CO(2) relative to control sheep, and 80% of these sheep developed TRALI. CONCLUSIONS This novel ovine two-event TRALI model presents a new tool for the investigation of TRALI pathogenesis. It represents the first description of an in vivo large animal model of TRALI and the first description of TRALI caused by transfusion with heat-treated pooled supernatant from human whole blood platelet concentrates.
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Affiliation(s)
- J P Tung
- Research and Development Laboratory, Australian Red Cross Blood Service, Brisbane, Qld, Australia.
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15
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Lane SW, Hassell P, Kennedy GA, Fung YL, Williams BA. Characterization of the bone marrow immunofluorescence test in childhood autoimmune neutropenia. Int J Lab Hematol 2008; 31:567-71. [PMID: 18637806 DOI: 10.1111/j.1751-553x.2008.01084.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The bone marrow immunofluorescenece test (BMIFT) demonstrates autoantibodies to granulocytes and their precursors on fresh-frozen bone marrow slides. It may be used to differentiate childhood autoimmune neutropenia (AIN) from other causes of childhood neutropenia, even when circulating neutrophil counts are low. We sought to characterize the diagnostic utility of the BMIFT in childhood AIN. All BMIFT requests for investigation of children with neutropenia between January 1998 and May 2007 were reviewed. Patients were classified as AIN or nonautoimmune causes. Baseline demographic data, results of BMIFT, granulocyte immunofluorescence testing and bone marrow findings were collected from clinical records and the institutional laboratory database. Seventy-six children had BMIFT performed for investigation of neutropenia. There were 45 patients diagnosed with AIN, 28 with nonimmune neutropenia and three failed tests. The median age of children with AIN was 1.2 years (range 0.3-15.3), compared with 3.6 years (range 0.1-15.7) in the nonautoimmune group. The median neutrophil count in AIN was 0.3 x 10(9)/l (0.9 x 10(9)/l in nonautoimmune). BMIFT was positive in 24 of 45 patients with AIN and 0 of 28 with nonautoimmune neutropenia (sensitivity 53%, specificity 100%, positive predictive value (PPV) 100%, negative predictive value 57%). Ten patients had other autoimmune diatheses at diagnosis. The BMIFT is a simple, highly specific test with excellent PPV and thus is a clinically useful test to confirm AIN in children.
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Affiliation(s)
- S W Lane
- Department of Haematology, Pathology Queensland, Royal Brisbane and Women's Hospitals, Herston Rd, Brisbane, Qld 4029, Australia.
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16
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Abstract
The incidence of alloimmune neonatal neutropenia (ANN) is poorly defined. The reported incidence is less than or equal to 0.1%. This prospective study of unselected pregnancies found an incidence of 0.81% based on results of screening 247 'full term' cord blood samples. Alloimmune neonatal neutropenia occurred more frequently in this population than expected from published historical data. Advances in techniques for antineutrophil antibody screening may have contributed to the higher incidence found in this study. The frequency of ANN supports increased surveillance and confirmatory serological testing in infants with unexplained neutropenia.
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Affiliation(s)
- Bronwyn A Williams
- Haematology Department, Queensland Health Pathalogy Service, Royal Brisbane Hospital, Brisbane, Queensland, Australia.
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17
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Abstract
Pregnant women with autoimmune neutropenia (AIN) and circulating neutrophil-specific autoantibodies can deliver neutropenic neonates at risk of sepsis. We report the case of a woman who had two such pregnancies. The woman had been on prophylactic granulocyte colony-stimulating factor (G-CSF) treatment, but this was ceased prior to conception in both pregnancies. In the first pregnancy, there was no monitoring or interventions, and the neonate was neutropenic and required intensive care treatment. In the second pregnancy, the maternal neutrophil autoantibody level was monitored, and G-CSF treatment was introduced in the third trimester. The second infant had no neutropenia at delivery and an excellent Apgar score. We discuss the management strategy in the second pregnancy that included monitoring of serial titres of the maternal autoantibody and the introduction of G-CSF in the third trimester, which may have contributed to a more favourable clinical outcome. This may assist other clinicians faced with similar dilemmas in the future.
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Affiliation(s)
- Y L Fung
- The Innovation Laboratory, Australian Red Cross Blood Service, Brisbane, Australia.
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Abstract
AIM Transfusion-related acute lung injury (TRALI) can be a life-threatening transfusion complication and should be considered whenever respiratory distress occurs during a transfusion. Management of donors implicated in TRALI is a n important haemovigilance responsibility for blood services. To enable this, it is imperative to develop an effective strategy for investigating TRALI. The present paper describes an effective approach. METHODS Cases of suspected TRALI we re referred to the Platelet and Granulocyte Immunobiology Laboratory at the Australian Red Cross Blood Service-Queensland; a reference neutrophil testing service. Recipient and donor samples were tested for the presence of leucocyte antibodies. Where possible, compatibility testing was performed between donor and recipient samples. RESULTS From March 1999 to June 2001 , leucocyte antibodies directed against neutrophil-specific or human leucocyte antigens (HIA) were detected in at least one donor in seven of the nine cases investigated. Incompatibility with patient antigens (HNA-2a, non-specific HLA and HLA B5, B16, B35) was confirmed by cross matching in three cases. CONCLUSION TRALI is a serious non-infectious hazard of transfusion that must be reported and investigated promptly. Prompt investigations allow appropriate management of implicated donations and donors so as to minimize the incidence of TRALI. Therefore, the role of clinicians in reporting such cases and the hospital blood banks in collecting appropriate samples is critical. We suggest that hospital blood banks retain transfused donation units for at least 24 h after transfusion to expedite TRALI investigations. Due to the specialized nature of investigation, it is necessary to direct such investigations to specialist reference neutrophil testing services. In cases where the recipient has the leucocyte antibody, the use of white cell filters in future transfusions should be beneficial, because there is little evidence to substantiate the use of phenotyped blood products.
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Affiliation(s)
- Y L Fung
- Platelet and Granulocyte Immunobiology, Australian Red Cross Blood Service, Brisbane, Queensland, Australia.
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Clague HD, Fung YL, Minchinton RM. Human neutrophil antigen-4a gene frequencies in an Australian population, determined by a new polymerase chain reaction method using sequence-specific primers. Transfus Med 2003; 13:149-52. [PMID: 12791082 DOI: 10.1046/j.1365-3148.2003.00435.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [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: 11/20/2022]
Abstract
Human neutrophil antigen-4a (HNA-4a) is a high-frequency (99% in the USA) neutrophil antigen, which has recently been linked to a case of alloimmune neonatal neutropenia. We have devised a new polymerase chain reaction sequence-specific primer (PCR-SSP) method to assess HNA-4a genotype, and used it to determine the HNA-4a gene frequencies in an Australian population. The gene frequency was found to be 0.906, which is the same as in the American population. The PCR-SSP genotyping method perfectly correlates with serological phenotyping and is efficient for screening large numbers of samples.
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Affiliation(s)
- H D Clague
- Queensland Institute of Medical Research, Australian Red Cross Blood Service, Brisbane, Queensland, Australia
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Abstract
This is a novel case report of alloimmune neonatal neutropenia (ANN) linked to the neutrophil antibody anti-HNA-4a (MART). Since its discovery, the HNA-4a antigen has never been associated with any clinical neutropenia. A first-born neonate with respiratory distress was found to be severely neutropenic, because of ANN. The broad reactivity of the antibody together with its capture by CD11b and CD18 in monoclonal antibody immobilization of granulocyte antigen test suggested HNA-4a specificity. DNA sequencing confirmed that the father is HNA-4a-positive and that the mother is HNA-4a-negative, supporting the diagnosis of ANN linked to MART.
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Affiliation(s)
- Y L Fung
- Platelet and Granulocyte Immunobiology Laboratory, Australian Red Cross Blood Service - Queensland, Brisbane, QLD, Australia.
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Abstract
alpha-Interferon has been shown to be the most promising antiviral agent in the treatment of chronic hepatitis B virus infection in Caucasian patients. The experience with recombinant interferon alfa-2a and alfa-2b in four randomized controlled trials in Chinese adults and children is reviewed here. alpha-Interferon alone has little long-term benefit in the treatment of Chinese patients with chronic hepatitis B virus infection, especially in patients who have normal or near normal serum aminotransferase levels. The response in patients with elevated aminotransferase levels appears to be better. The poor antiviral response in patients with normal aminotransferase levels is probably due to immunological tolerance to HBV induced by exposure to the virus in early life. Prednisone pretreatment does not seem to have any additional benefit to using interferon alone in these patients, while the effect in patients with elevated aminotransferase levels remains to be proven.
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Affiliation(s)
- A S Lok
- Department of Medicine, University of Hong Kong, Queen Mary Hospital
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