The influence of bevacizumab on platelet function
Systemic treatment with bevacizumab is associated with increased rates of arterial and venous thromboembolism and haemorrhage. In order to investigate the pathophysiological mechanism involved, platelet adhesive and aggregatory functions were tested with a platelet function analyser (PFA-100®)...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SMW supporting association (Trägerverein Swiss Medical Weekly SMW)
2011-07-01
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| Series: | Swiss Medical Weekly |
| Subjects: | |
| Online Access: | https://www.smw.ch/index.php/smw/article/view/1321 |
| _version_ | 1826995744711639040 |
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| author | M Fehr S Catschegn J Madon L Asmis R Cathomas Moos von |
| author_facet | M Fehr S Catschegn J Madon L Asmis R Cathomas Moos von |
| author_sort | M Fehr |
| collection | DOAJ |
| description |
Systemic treatment with bevacizumab is associated with increased rates of arterial and venous thromboembolism and haemorrhage. In order to investigate the pathophysiological mechanism involved, platelet adhesive and aggregatory functions were tested with a platelet function analyser (PFA-100®) in an in vitro study and in a longitudinal clinical observation study. For the in vitro study, blood from ten healthy volunteers was incubated with different concentrations of bevacizumab (0–1000 μg/ml plasma) and vascular endothelial growth factor (0–500 μg/ml). In the clinical observation study, PFA-100®closure times (CTs) and soluble P-selectin (sP-selectin) serum levels as a serological marker of platelet activation were assessed in 20 patients with metastatic cancer who were treated with bevacizumab in addition to cytotoxic chemotherapy. No significant changes of PFA-100® CTs were observed in the in vitro study. In the clinical observation study, mean PFA-100® CTs after treatment with bevacizumab were unchanged. sP-selectin was decreased after bevacizumab infusion by 18% (p = 0.045), which could suggest an inhibitory action on platelets. Our data do not support the view that increased platelet activation or increased platelet adhesiveness and aggregation by bevacizumab are relevant mechanisms for thrombus formation in clinical practice.
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| first_indexed | 2024-04-13T03:45:27Z |
| format | Article |
| id | doaj.art-1c1cd697d106486a9776762ec0fc07e5 |
| institution | Directory Open Access Journal |
| issn | 1424-3997 |
| language | English |
| last_indexed | 2025-02-18T09:37:47Z |
| publishDate | 2011-07-01 |
| publisher | SMW supporting association (Trägerverein Swiss Medical Weekly SMW) |
| record_format | Article |
| series | Swiss Medical Weekly |
| spelling | doaj.art-1c1cd697d106486a9776762ec0fc07e52024-11-02T17:27:07ZengSMW supporting association (Trägerverein Swiss Medical Weekly SMW)Swiss Medical Weekly1424-39972011-07-01141293010.4414/smw.2011.13243The influence of bevacizumab on platelet functionM FehrS CatschegnJ MadonL AsmisR CathomasMoos von Systemic treatment with bevacizumab is associated with increased rates of arterial and venous thromboembolism and haemorrhage. In order to investigate the pathophysiological mechanism involved, platelet adhesive and aggregatory functions were tested with a platelet function analyser (PFA-100®) in an in vitro study and in a longitudinal clinical observation study. For the in vitro study, blood from ten healthy volunteers was incubated with different concentrations of bevacizumab (0–1000 μg/ml plasma) and vascular endothelial growth factor (0–500 μg/ml). In the clinical observation study, PFA-100®closure times (CTs) and soluble P-selectin (sP-selectin) serum levels as a serological marker of platelet activation were assessed in 20 patients with metastatic cancer who were treated with bevacizumab in addition to cytotoxic chemotherapy. No significant changes of PFA-100® CTs were observed in the in vitro study. In the clinical observation study, mean PFA-100® CTs after treatment with bevacizumab were unchanged. sP-selectin was decreased after bevacizumab infusion by 18% (p = 0.045), which could suggest an inhibitory action on platelets. Our data do not support the view that increased platelet activation or increased platelet adhesiveness and aggregation by bevacizumab are relevant mechanisms for thrombus formation in clinical practice. https://www.smw.ch/index.php/smw/article/view/1321bevacizumabhemorrhagePFA-100platelet functionsoluble P-selectinthrombosis |
| spellingShingle | M Fehr S Catschegn J Madon L Asmis R Cathomas Moos von The influence of bevacizumab on platelet function Swiss Medical Weekly bevacizumab hemorrhage PFA-100 platelet function soluble P-selectin thrombosis |
| title | The influence of bevacizumab on platelet function |
| title_full | The influence of bevacizumab on platelet function |
| title_fullStr | The influence of bevacizumab on platelet function |
| title_full_unstemmed | The influence of bevacizumab on platelet function |
| title_short | The influence of bevacizumab on platelet function |
| title_sort | influence of bevacizumab on platelet function |
| topic | bevacizumab hemorrhage PFA-100 platelet function soluble P-selectin thrombosis |
| url | https://www.smw.ch/index.php/smw/article/view/1321 |
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