PMID- 10651313 OWN - NLM STAT- MEDLINE DCOM- 20000207 LR - 20191024 IS - 0262-0898 (Print) IS - 0262-0898 (Linking) VI - 17 IP - 5 DP - 1999 Jul TI - In vivo treatment of rats with unfractionated heparin (UFH) or low molecular weight heparin (LMWH) does not affect experimentally induced colon carcinoma metastasis. PG - 451-6 AB - Recent randomized trials have suggested that treatment with low molecular weight heparin (LMWH) improves survival of cancer patients with venous thromboembolism, as compared to treatment with unfractionated heparin (UFH). Experimental studies have shown that UFH has activities besides its anticoagulant function which may affect progression of malignancy, including stimulation of new blood vessel formation. In contrast, LMWH has been suggested to inhibit angiogenesis. In the present study, we compared quantitatively the effects of treatment with UFH, LMWH or placebo on the development of experimentally induced colon carcinoma metastases in rat liver and on tumor-associated angiogenesis. It is shown that UFH and LMWH in therapeutic dosages neither affect development of metastases nor tumor blood vessel formation in this animal model. These results indicate that heparins do not affect colon cancer metastasis in liver. Further studies in other animal models are required to establish the mechanisms by which heparins potentially affect cancer. FAU - Smorenburg, S M AU - Smorenburg SM AD - Academic Medical Center, University of Amsterdam, Department of Cell Biology and Histology, The Netherlands. s.m.smorenburg@amc.uva.nl FAU - Vink, R AU - Vink R FAU - te Lintelo, M AU - te Lintelo M FAU - Tigchelaar, W AU - Tigchelaar W FAU - Maas, A AU - Maas A FAU - Buller, H R AU - Buller HR FAU - van Noorden, C J AU - van Noorden CJ LA - eng PT - Journal Article PL - Netherlands TA - Clin Exp Metastasis JT - Clinical & experimental metastasis JID - 8409970 RN - 0 (Anticoagulants) RN - 0 (Heparin, Low-Molecular-Weight) RN - 9005-49-6 (Heparin) SB - IM MH - Animals MH - Anticoagulants/adverse effects/*therapeutic use MH - Colonic Neoplasms/blood supply/*drug therapy/*pathology MH - Heparin/adverse effects/*therapeutic use MH - Heparin, Low-Molecular-Weight/adverse effects/*therapeutic use MH - Humans MH - Neoplasm Metastasis/prevention & control MH - *Neovascularization, Pathologic MH - Rats EDAT- 2000/01/29 00:00 MHDA- 2000/01/29 00:01 CRDT- 2000/01/29 00:00 PHST- 2000/01/29 00:00 [pubmed] PHST- 2000/01/29 00:01 [medline] PHST- 2000/01/29 00:00 [entrez] AID - 10.1023/a:1006648429914 [doi] PST - ppublish SO - Clin Exp Metastasis. 1999 Jul;17(5):451-6. doi: 10.1023/a:1006648429914.