Biodynamic signatures from ex vivo bone marrow aspirates are associated with chemotherapy‐induced neutropenia in cancer‐bearing dogs
| العنوان: | Biodynamic signatures from ex vivo bone marrow aspirates are associated with chemotherapy‐induced neutropenia in cancer‐bearing dogs |
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| المؤلفون: | Michael O. Childress, George E. Moore, Zhe Li, John J. Turek, David D. Nolte, Blake A. Marcum |
| المصدر: | Veterinary Medicine and Science, Vol 7, Iss 3, Pp 665-673 (2021) Veterinary Medicine and Science |
| بيانات النشر: | Wiley, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | medicine.medical_specialty, spectroscopy, Neutropenia, Side effect, medicine.medical_treatment, precision medicine, Veterinary medicine, Antineoplastic Agents, Gastroenterology, cancer chemotherapy, Dogs, Bone Marrow, Neoplasms, Internal medicine, SF600-1100, Biomarkers, Tumor, medicine, Animals, Doxorubicin, Dog Diseases, Adverse effect, Chemotherapy, General Veterinary, business.industry, Cancer, medicine.disease, adverse events, medicine.anatomical_structure, Original Article, Bone marrow, business, Ex vivo, medicine.drug |
| الوصف: | Background Neutropenia is the most common dose‐limiting side effect of cytotoxic chemotherapy in cancer‐bearing dogs. Biodynamic imaging (BDI) is a functional imaging technology that measures dynamic light scattering from living, three‐dimensional tissues to characterize intracellular motion within those tissues. Previous studies have associated BDI biomarkers with tumour sensitivity to chemotherapy agents in dogs with naturally occurring cancer. We hypothesized that BDI, performed ex vivo on bone marrow aspirate samples, would identify dynamic biomarkers associated with the occurrence of specific degrees of neutropenia in tumour‐bearing dogs receiving doxorubicin chemotherapy. Materials and Methods Bone marrow aspirates were collected from 10 dogs with naturally occurring cancers prior to initiation of doxorubicin treatment. BDI was performed on bone marrow samples treated ex vivo with doxorubicin at 0.1, 1, 10 and 100 μM along with 0.1% DMSO as a control. Dogs then were treated with doxorubicin (30 mg/m2, intravenously). Peripheral blood neutrophil counts were obtained on the day of treatment and again 7 days later. Receiver operating characteristic curves identified provisional breakpoints for BDI biomarkers that correlated with specific changes in neutrophil counts between the two time points. Results Provisional breakpoints for several BDI biomarkers were identified, specifying dogs with the largest proportionate change in neutrophils and with neutropenia that was grade 2 or higher following doxorubicin treatment. Conclusions Biodynamic imaging of bone marrow aspirates may identify those dogs at greater risk for neutropenia following doxorubicin chemotherapy. This approach may be useful for pre‐emptively modifying chemotherapy dosing in dogs to avoid unacceptable side effects. Biodynamic imaging is a form of Doppler spectroscopy that records temporal fluctuations in back‐scattered light from living tissues as a surrogate measure of changes in intracellular motion within those tissues, which are induced by drug exposure. This drug response spectrogram illustrates a phenotypic, intracellular motion‐based response of canine bone marrow tissue to the cytotoxic agent, doxorubicin. |
| اللغة: | English |
| تدمد: | 2053-1095 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6117b6a1f59676a9da87ae0a41b2ef7 https://doaj.org/article/77dacd601e824251901ec038b34af580 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....b6117b6a1f59676a9da87ae0a41b2ef7 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20531095 |
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