PMID- 17905524 OWN - NLM STAT- MEDLINE DCOM- 20071228 LR - 20131121 IS - 0344-0338 (Print) IS - 0344-0338 (Linking) VI - 203 IP - 11 DP - 2007 TI - Percutaneous coronary injection of bone marrow cells in small experimental animals: small is not too small. PG - 801-8 AB - Intracoronary infusion of bone marrow cells (BMCs) is thought to induce cardiac regeneration in ischemic heart disease and dilated cardiomyopathy. The aim of our study was to develop a new method to inject BMCs into coronary arteries of small experimental animals. Transient atrioventricular block (AVB) was induced in 25 rats and 39 hamsters by intracarotid injection of adenosine 5'-triphosphate (ATP). Contrast echocardiography was obtained. BMCs (0.2-0.5 ml) were collected through femoral puncture, stained with PKH26 and injected into the carotid artery (CA). Animals were immediately sacrificed or followed for 1 month. To evaluate BMCs transfer from CA to myocardium, AVB and BMCs injections were performed in 10 hamsters subjected to coronary ligation for 30 min. Induction of transient AVB was possible in all animals by injecting 20-30 mg of ATP. Animals recovered a basal cardiac activity spontaneously or by dopamine injection. Flash injection of contrast medium through the CA induced staining of aortic root, coronary arteries, and myocardium. BMCs injection was possible in all cases. No immediate or late ECG changes were observed. Immediately after injection in healthy animals, histological examination showed the presence of BMCs in small coronary arteries and, after 1 month, the absence of infarction. In ischemic hearts, the presence of BMCs in the myocardium was observed 24h after ischemia. ATP-induced AVB block allows for percutaneous intracoronary injection of BMCs in small experimental animals with no immediate or late mortality and morbidity. This method offers new perspectives for the investigation of BMCs coronary infusion and engraftment in heart diseases. FAU - Agnoletti, Gabriella AU - Agnoletti G AD - Necker Enfants Malades, Paris, France. gabriella.agnoletti@nck.ap-hop-paris.fr FAU - Cargnoni, Anna AU - Cargnoni A FAU - Agnoletti, Laura AU - Agnoletti L FAU - Di Marcello, Marco AU - Di Marcello M FAU - Balzarini, Piera AU - Balzarini P FAU - Gitti, Luca AU - Gitti L FAU - Martina, Patrizia AU - Martina P FAU - Grigolato, Pier Giovanni AU - Grigolato PG FAU - Ferrari, Roberto AU - Ferrari R LA - eng PT - Journal Article DEP - 20071001 PL - Germany TA - Pathol Res Pract JT - Pathology, research and practice JID - 7806109 RN - 8L70Q75FXE (Adenosine Triphosphate) SB - IM MH - Adenosine Triphosphate/toxicity MH - Administration, Cutaneous MH - Animals MH - Atrioventricular Block/chemically induced MH - Bone Marrow Transplantation/*methods MH - *Carotid Arteries MH - *Coronary Vessels MH - Cricetinae MH - Echocardiography MH - Flow Cytometry MH - Male MH - Mesocricetus MH - Myocardial Ischemia/*therapy MH - Myocardium/*cytology MH - Rats MH - Rats, Sprague-Dawley EDAT- 2007/10/02 09:00 MHDA- 2007/12/29 09:00 CRDT- 2007/10/02 09:00 PHST- 2007/03/26 00:00 [received] PHST- 2007/07/04 00:00 [revised] PHST- 2007/07/20 00:00 [accepted] PHST- 2007/10/02 09:00 [pubmed] PHST- 2007/12/29 09:00 [medline] PHST- 2007/10/02 09:00 [entrez] AID - S0344-0338(07)00164-1 [pii] AID - 10.1016/j.prp.2007.07.008 [doi] PST - ppublish SO - Pathol Res Pract. 2007;203(11):801-8. doi: 10.1016/j.prp.2007.07.008. Epub 2007 Oct 1.