Warburg revisited: imaging tumour blood flow and metabolism
| Autor: | Kenneth A. Miles, R E Williams |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Diagnostic Imaging
Pathology medicine.medical_specialty response evaluation Hemodynamics Review Severity of Illness Index Diagnosis Differential angiogenesis Vascularity In vivo Neoplasms Medical imaging Biomarkers Tumor Medicine Tumour perfusion Humans Radiology Nuclear Medicine and imaging Radiological and Ultrasound Technology medicine.diagnostic_test business.industry Magnetic resonance imaging General Medicine Metabolism Hypoxia (medical) tumour metabolism Oncology tumour characterisation medicine.symptom business Anaerobic exercise Blood Flow Velocity |
| Zdroj: | Cancer Imaging |
| ISSN: | 1470-7330 1740-5025 |
| Popis: | In the 1930s, Otto Warburg reported that anaerobic metabolism of glucose is a fundamental property of all tumours, even in the presence of an adequate oxygen supply. He also demonstrated a relationship between the degree of anaerobic metabolism and tumour growth rate. Today, this phenomenon forms the basis of tumour imaging with fluorodeoxyglucose positron emission tomography (FDG-PET). More recently, Folkman has demonstrated that malignant growth and survival are also dependent on tumour vascularity which is increasingly evaluated in vivo using techniques such as contrast enhanced computed tomography or magnetic resonance imaging (MRI). Although it is reasonable to hypothesise that the metabolic requirements of tumours are mirrored by alterations in tumour haemodynamics, the relationship between tumour blood flow and metabolism is in fact complex. A well-developed tumour vascular supply is required to ensure a sufficient delivery of glucose and oxygen to support the metabolism essential for tumour growth. However, an inadequate vascularisation of tumour will result in hypoxia, a factor that is known to stimulate anaerobic metabolism of glucose. Thus, the balance between tumour blood flow and metabolism will be an important indicator of the biological status of a tumour and hence the tumour's likely progression and response to treatment. This article reviews the molecular biology of tumour vascularisation and metabolism, relating these processes to currently available imaging techniques while summarising the imaging studies that have compared tumour blood flow and metabolism. The potential for vascular metabolic imaging to assess tumour aggression and sub-classify treatment response is highlighted. |
| Databáze: | OpenAIRE |
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