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Cain L, Geneen LJ, Wiltshire M, Kimber C, Proffitt S, Sandercock J, Dorée C, Brunskill SJ, Estcourt LJ. Universal irradiation of platelets: Does irradiation affect the quality, effectiveness, and safety of platelets for transfusion? Transfus Med Rev 2024:150840. [PMID: 39019680 DOI: 10.1016/j.tmrv.2024.150840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 06/14/2024] [Accepted: 06/14/2024] [Indexed: 07/19/2024]
Abstract
We aimed to identify any detrimental effects on platelet quality and clinical effectiveness, of irradiated platelets compared to non-irradiated platelets for transfusion. The review was conducted in accordance with PRISMA guidelines. The protocol was prospectively registered on PROSPERO [CRD42023441930]. Our search identified 3002 references, of which we included 44 studies. Forty-one were in vitro only studies, two studies were in healthy volunteers, and one study reported clinical outcomes in thrombocytopenic patients. X-ray was used exclusively in three studies, and alongside gamma irradiation in one study. Two studies did not report the source of irradiation. The remaining 38 studies used gamma irradiation only. We assessed risk of bias (ROB) for studies reporting clinical and in vivo outcomes using ROB 2.0 (3 studies). We adapted a ROB tool designed for animal studies to assess ROB for the studies reporting in vitro outcomes (43 studies). We assessed the certainty of the evidence for the eight outcomes deemed most important to assess platelet quality and clinical effectiveness (where day 0 is the day of the blood draw). Overall, gamma irradiation has little to no effect on most markers of platelet quality and effectiveness. Where there is evidence of detriment from irradiation, differences are small in vitro, and are unlikely to affect clinical outcomes following transfusion. However, the evidence base is limited. Only half the studies could be included in any analysis. There is very limited evidence for x-ray as a source of irradiation and, given the potential benefits of using x-ray over gamma irradiation (ease of use and safety requirements), we would welcome further research comparing x-ray to gamma, and x-ray to a non-irradiated control.
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Affiliation(s)
- Lorna Cain
- Haematology/Transfusion Medicine, NHS Blood and Transplant, Oxford, UK; Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, UK.
| | - Louise J Geneen
- Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, UK; Systematic Review Initiative, NHS Blood and Transplant, Oxford, UK
| | - Michael Wiltshire
- Component Development Laboratory, NHS Blood and Transplant, Cambridge, UK
| | - Catherine Kimber
- Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, UK; Systematic Review Initiative, NHS Blood and Transplant, Oxford, UK
| | - Sue Proffitt
- Component Development Laboratory, NHS Blood and Transplant, Cambridge, UK
| | - Josie Sandercock
- Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, UK; Systematic Review Initiative, NHS Blood and Transplant, Oxford, UK
| | - Carolyn Dorée
- Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, UK; Systematic Review Initiative, NHS Blood and Transplant, Oxford, UK
| | - Susan J Brunskill
- Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, UK; Systematic Review Initiative, NHS Blood and Transplant, Oxford, UK
| | - Lise J Estcourt
- Haematology/Transfusion Medicine, NHS Blood and Transplant, Oxford, UK; Systematic Review Initiative, NHS Blood and Transplant, Oxford, UK
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Johnson L, Vekariya S, Wood B, Costa M, Waters L, Green S, Marks DC. The in vitro quality of X-irradiated platelet components in PAS-E is equivalent to gamma-irradiated components. Transfusion 2021; 61:3075-3080. [PMID: 34482545 DOI: 10.1111/trf.16647] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 08/05/2021] [Accepted: 08/14/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND Blood components are irradiated to inactivate lymphocytes in an effort to prevent transfusion-associated graft versus host disease. Although gamma irradiators are commonly used, they are subjected to rigorous health, safety, and compliance regulations, compared with X-irradiators which have the advantage of only emitting radiation while the machine is switched on. While the effects of gamma irradiation on platelet components are well known, there is little or no data comparing the effects of X- and gamma-irradiation on the quality of these components. Therefore, this study examined the in vitro quality of platelet components (pooled and apheresis) following X- or gamma-irradiation. STUDY DESIGN AND METHODS Whole-blood-derived (pooled) and apheresis platelet components in platelet additive solution (n = 20 pairs for each type) were irradiated (X vs. gamma). In vitro platelet quality was tested prior to irradiation (day 1) and subsequently on days 2, 5, and 7. Non-irradiated components were tested on day 5 in parallel as reference controls. Metabolic parameters, surface expression of glycoproteins and activation markers (CD62P and annexin-V binding), and agonist-induced aggregation were measured. RESULTS All components met Council of Europe specifications. There were no statistical differences in any in vitro quality measurements between X- and gamma-irradiated pooled or apheresis platelet components. CONCLUSION X- and gamma-irradiation have similar effects on the in vitro quality of stored blood components, indicating that either technology represents a suitable option for irradiation of platelet components.
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Affiliation(s)
- Lacey Johnson
- Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia
| | - Shuchna Vekariya
- Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia
| | - Ben Wood
- Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia
| | - Marylia Costa
- Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia
| | - Lauren Waters
- Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia
| | - Sarah Green
- Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia
| | - Denese C Marks
- Research and Development, Australian Red Cross Lifeblood, Alexandria, New South Wales, Australia.,Sydney Medical School, The University of Sydney, Camperdown, New South Wales, Australia
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