PMID- 15678621 OWN - NLM STAT- MEDLINE DCOM- 20060831 LR - 20191210 IS - 1358-863X (Print) IS - 1358-863X (Linking) VI - 9 IP - 4 DP - 2004 Nov TI - Abnormal monocyte recruitment and collateral artery formation in monocyte chemoattractant protein-1 deficient mice. PG - 287-92 AB - Monocyte chemoattractant protein 1 (MCP-1) has been shown to be effective for the stimulation of collateral artery formation in small and large animal models. The availability of a genetic knockout mouse enables evaluation of the importance of the role of MCP-1 in the natural course of collateral artery growth. In a total of 21 MCP-1 -/- as well as 13 of the appropriate genetic background controls ([129Sv/J X C57BI/6J]F1), a femoral artery ligation was performed. Subsequently, a polyethylene catheter, connected to an osmotic minipump, was inserted retrogradely into the occluded femoral artery with the tip pointing upstream. Using this technique, PBS (MCP-1 -/-: n = 13 and C57BI/6J: n = 13) or MCP-1 (JE; MCP-1 -/-: n = 8) was delivered intra-arterially. Seven days after ligation, determination of hind limb flow was assessed by controlled tissue perfusion using differently labeled fluorescent microspheres. MCP-1 -/- mice exhibited a reduction of hind limb flow of 32.9 +/- 9.2% of the unligated hind limb, compared with 55.4 +/- 6.8% in C57BI/6J mice (p<0.01). MCP-1 -/- mice that underwent a subsequent 'rescue' treatment with MCP-1 showed a restoration of flow to a level of 47.4 +/- 9.8% (p = NS compared with PBS-treated C57BI/6J). Specific immunohistochemical staining for monocytes (MOMA-2: MCP-1 -/-, n = 5 and C57BI/6J, n = 5) showed a reduced number of monocytes around developing collateral arteries in the MCP-1 -/- mice. In conclusion, our data show that the absence of MCP-1 causes a strong reduction in flow restoration after femoral artery occlusion, coinciding with a reduced monocyte attraction, emphasizing the central role of this chemokine in the multifactorial process of collateral artery formation. FAU - Voskuil, Michiel AU - Voskuil M AD - Department of Cardiology, Academic Medical Center, Amsterdam, The Netherlands. FAU - Hoefer, Imo E AU - Hoefer IE FAU - van Royen, Niels AU - van Royen N FAU - Hua, Jing AU - Hua J FAU - de Graaf, Stijn AU - de Graaf S FAU - Bode, Christoph AU - Bode C FAU - Buschmann, Ivo R AU - Buschmann IR FAU - Piek, Jan J AU - Piek JJ LA - eng PT - Comparative Study PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Vasc Med JT - Vascular medicine (London, England) JID - 9610930 RN - 0 (Chemokine CCL2) SB - IM MH - Animals MH - Chemokine CCL2/*deficiency MH - *Collateral Circulation MH - Disease Models, Animal MH - Endothelium, Vascular/cytology/metabolism/physiopathology MH - Extremities/*blood supply/surgery MH - Female MH - Femoral Artery/cytology/metabolism/physiopathology MH - Immunohistochemistry MH - Ligation MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Monocytes/*metabolism/*pathology MH - Perfusion MH - Regional Blood Flow EDAT- 2005/02/01 09:00 MHDA- 2006/09/01 09:00 CRDT- 2005/02/01 09:00 PHST- 2005/02/01 09:00 [pubmed] PHST- 2006/09/01 09:00 [medline] PHST- 2005/02/01 09:00 [entrez] AID - 10.1191/1358863x04vm571oa [doi] PST - ppublish SO - Vasc Med. 2004 Nov;9(4):287-92. doi: 10.1191/1358863x04vm571oa.