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Rocheleau AD, Khader A, Ngo AT, Boehnlein C, McDavitt C, Lattimore S, Recht M, McCarty OJ, Haley KM. Pilot study of novel lab methodology and testing of platelet function in adolescent women with heavy menstrual bleeding. Pediatr Res 2018; 83:693-701. [PMID: 29166373 PMCID: PMC5902421 DOI: 10.1038/pr.2017.298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 10/29/2017] [Indexed: 01/02/2023]
Abstract
BackgroundApproximately 40% of adolescent women experience heavy menstrual bleeding (HMB), and 10-62% of them have an underlying bleeding disorder (BD). Diagnosing a BD remains challenging because of limitations of available clinical platelet function assays. The aim of this study was to characterize platelet function in a population of adolescent women with HMB using small-volume whole-blood assays.MethodsAnticoagulated whole blood was used to assess platelet GPIIbIIIa activation, α-granule secretion, and aggregation in response to multiple agonists. Platelet adhesion on collagen or von Willebrand Factor (VWF) under static and shear flow was also assessed.ResultsFifteen participants with HMB were included in the study, of which eight were diagnosed with a clinically identifiable BD. Platelet activation was blunted in response to calcium ionophore in participants without a BD diagnosis compared with that in all other participants. Impaired GPIIbIIIa activation was observed in response to all GPCR agonists, except adenosine diphosphate (ADP), in participants with qualitative platelet disorders. Our assays detected platelet aggregation in the majority of participants with a BD in response to ADP, collagen-related peptide (CRP), thrombin receptor activator 6 (TRAP-6), or U46619. Platelet adhesion and aggregation on collagen and VWF was decreased for participants with VWD.ConclusionParticipants with and without BD exhibited aberrant platelet function in several assays in response to select agonists.
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Affiliation(s)
- Anne D. Rocheleau
- Department of Biomedical Engineering, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, Oregon
| | - Ayesha Khader
- Department of Biomedical Engineering, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, Oregon
| | - Anh T.P. Ngo
- Department of Biomedical Engineering, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, Oregon
| | - Colin Boehnlein
- The Hemophilia Center, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, Oregon
| | - Cara McDavitt
- The Hemophilia Center, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, Oregon
| | - Susan Lattimore
- The Hemophilia Center, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, Oregon
| | - Michael Recht
- The Hemophilia Center, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, Oregon
| | - Owen J.T. McCarty
- Department of Biomedical Engineering, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, Oregon
| | - Kristina M. Haley
- The Hemophilia Center, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, Oregon
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