Printer Friendly
The Free Library
23,383,293 articles and books


An alternative approach of stem cell delivery to myocardium: combined usage of antegrade coronary arterial infusion and retrograde venous obstruction/Miyokard dokusuna kok hucre nakline alternatif bir yaklasim: antegrad koroner arteryel infuzyon ve retrograd venoz obstruksiyonun birlikte kullanimi.

Introduction

Four main routes of stem cell delivery methods have been reported in cardiac stem cell therapy studies: antegrade intracoronary infusion, direct endocardial injection, retrograde coronary sinus infusion and transepicardial injection (1-4). We present an alternative technique involving antegrade stem cell infusion, with the simultaneous obstruction of related coronary vein.

Case Report

A 54-year-old man admitted to our institute with a functional capacity of class II (NYHA) and chest pain for the last three months. Patient had history of successful primary direct stent implantation to proximal left anterior descending artery (LAD) due to an acute anterior myocardial infarction three years ago. The electrocardiogram showed chronic QS patterns at V1-V3 leads and the echocardiogram revealed mid- and apical anterior akinesia and septal hypokinesia with an ejection fraction (EF) of %30. Tetrophosmin SPECT showed an anterior and anterior septal scar. Coronary angiography revealed patent stent in LAD. We decided to perform stem cell therapy aiming to enhance left ventricular function and perfusion. Therefore, 80 ml of bone marrow was aspirated under local anesthesia from posterior iliac crest of the patient. We used the same technique for isolation of bone marrow-derived mononuclear cells (BMCs) as previously described by Strauer et al. (1). Isolated number of the BMCs was 4.4 x [10.sup.8] with a 98.4% viability tested by Tryphan Blue. After arrival of the BMC suspension to cardiac catheterization laboratory, first, a fiberoptic pressure-temperature sensor tipped guidewire (Intracoronary pressure wire sensor 4, Radi Medical Systems, Uppsala, Sweden) was introduced through a 6F guiding catheter and placed distal to the stented segment of the LAD. Proximal aortic and distal coronary pressures were recorded and by using papaverine, baseline thermodilution derived coronary flow reserve (CFR) was calculated as the resting mean transit time divided by the hyperemic mean transit time (5). The mean transit time at rest and during hyperemia were recorded after rapid injection of 3 ml of room-temperature saline through the guiding catheter as previously described (6). Index of microvascular resistance (IMR) was defined as simultaneously measured distal hyperemic mean coronary pressure divided by the inverse of the thermodilution derived hyperemic mean transit time (7). Thereafter we inserted a second guide wire in LAD and the over-the-wire balloon catheter (Occam International, Eindhoven, Netherlands) was inserted in the stented segment. Consequently, the coronary sinus was catheterized through femoral vein and a 4.0x20 mm balloon was placed in great cardiac vein. Both balloons were inflated thus the LAD artery and great cardiac vein were occluded for one minutes in 3-4 atmospheres in attempt to produce stagnation of coronary flow (Fig 1). Then we infused 10 cc of BMC suspension directly in to the infarcted region through the LAD artery via the central lumen of the inflated balloon catheter. The inflation time was prolonged for 30 seconds for coronary balloon and 2 minutes for venous balloon after the infusion completed to allow maximum contact time with the microcirculation. After six-month, the patient was asymptomatic, with exercise test showing a 15% improvement in exercise capacity without evidence of ischemia accompanied by a functional capacity of class I (NYHA). We revealed an increase in EF (30% to 38%) by echocardiography. SPECT (Bull's Eye technique) demonstrated a significant decrease in initial infarct size (from 56% to 41%) and a moderate decrease in left ventricular diastolic and systolic volumes (167 to 155ml; 106 to 91 ml) was obtained (Fig. 2). The control angiography showed patent LAD with improvement in left ventricular ejection fraction. Furthermore we observed a significant increase in CFR (1.5 to 2.6) and decrease in IMR (45.5 to 11.2) which are known to be probable evidences of neovascularization (Fig. 3A-3B).

[FIGURE 1 OMITTED]

[FIGURE 2 OMITTED]

[FIGURE 3 OMITTED]

Discussion

Previous studies suggested that, intracoronary BMC transplantation beneficially affects on neovascularization, left ventricular remodeling, and contractility in coronary artery disease (8, 9). The appropriate route of cell administration to the damaged organ is a crucial requirement for the success of organ repair. Reaching high cell concentrations within the target area and preventing homing of transplanted cells into other organs are also critical. Therefore, targeted and regional administration and transplantation of cells should be preferred. In the current case, we used an alternative approach for cellular cardiomyoplasty, which is actually a combination of two established techniques, and demonstrated an improvement in left ventricular contractility and myocardial perfusion supported by intracoronary hemodynamic measurements. We think that distribution of stem cells into other organs may be decreased and homing of stem cells in the targeted area can be achieved by this technique.

Conclusion

Aiming more effective cellular implantation to myocardium, this alternative technique seems to be feasible and safe in our case.

The case was presented at the XX. National Congress of Cardiology, 26-29 November, 2005, Antalya, Turkey

References

(1.) Ozbaran M, Omay SB, Nalbantgil S, Kultursay H, Kumanlioglu K, Nart D, et al. Autologous peripheral stem cell transplantation in patients with congestive heart failure due to ischemic heart disease. Eur J Cardiothorac Surg 2004; 25: 342-50.

(2.) Wollert KM, Meyer GP, Lotz J, Ringes-Lichtenberg S, Lippolt P, Breidenbach C, et al. Intracoronary autologous bone-marrow cell transfer after myocardial infarction: randomized controlled clinical trial. BOOST randomized controlled clinical trial. Lancet 2004; 364, 141-8.

(3.) Fuchs S, Satler LF, Komowski R, Okobagzi P, Weisz G, Baffour R, et al. Catheter based autologous bone marrow myocardial injection in no option patients with advanced coronary artery disease. A feasibility study. J Am Coll Cardiol 2003; 41:1721-4.

(4.) Suzuki K, Murtuza B, Fukushima S, Smolenski RT, Varela-Carver A, Coppen SR, et al. Targeted cell delivery in to infarcted rat hearts by retrograde intracoronary infusion: distribution, dynamics, and influence in cardiac functions. Circulation 2004; 110 (Suppl II): 11225-1130.

(5.) Barbato E, Aarnoudse W, Aengevaeren GW, Klauss V, Bojara W, Herzfeld I, et al. Validation of coronary flow reserve measurements by thermodilution in clinical practice. E Heart J 2004; 25: 219- 23.

(6.) Pijls NH, De Bruyne B, Smith L, Aarnoudse W, Barbato E, Bartunek J, et al. Coronary thermodilution to assess flow reserve: validation in humans. Circulation 2002; 105: 2482-6

(7.) Fearon W, Balsam L, Faroque 0, Robbins RC, Fitzgerald PJ, Yock PG, et al. Novel index for invasively assessing the coronary microcirculation. Circulation 2003; 107: 3129-32.

(8.) Erbs S, Linke A, Schachinger V, Assmus B, Thiele H, Diederich KW, et al. Restoration of microvascular function in the infarct related artery by intracoronary transplantation of bone-marrow progenitor cells in patients with acute myocardial infarction: The Doppler substudy of the re-infusion of enriched progenitor cells and infarct remodeling in acute myocardial infarction (REPAIR-AMI) Trial. Circulation 2007; 116: 366-74.

(9.) Schaefer A, Meyer GP, Fuchs M, Klein G, Kaplan M, Wollert KC, et al. lmpact of intracoronary bone marrow cell transfer on diastolic function in patients after acute myocardial infarction: results from the BOOST trial. Eur Heart J 2006; 27: 929-35.

Yilmaz Nisanci, Yelda Tayyareci [1], Murat Sezer, Berrin Umman Istanbul Faculty of Medicine, Istanbul University, Cardiology, Istanbul

[1] Department of Cardiology, Florence Nightingale Hospital, Istanbul, Turkey

Address for Correspondence/Yazisma Adresi: Dr. Yelda Tayyareci, Department of Cardiology, Florence Nightingale Hospital, Istanbul, Turkey Phone: +90 212 224 49 50 Faks: +90 212 224 49 82 E-mail: yeldatayyareci@hotmail.com
COPYRIGHT 2008 Aves Yayincilik
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2008 Gale, Cengage Learning. All rights reserved.

 Reader Opinion

Title:

Comment:



 

Article Details
Printer friendly Cite/link Email Feedback
Author:Nisanci, Yilmaz; Tayyareci, Yelda; Sezer, Murat; Umman, Berrin
Publication:The Anatolian Journal of Cardiology (Anadolu Kardiyoloji Dergisi)
Article Type:Case study
Geographic Code:7TURK
Date:Oct 1, 2008
Words:1200
Previous Article:Re-operation for the mechanical valve obstruction with a beating heart technique in an elderly patient with compromised ventricular function/...
Next Article:An alternative approach of stem cell delivery to myocardium/miyokard dokusuna kok hucre nakline alternatif bir yaklasim.
Topics:

Terms of use | Copyright © 2014 Farlex, Inc. | Feedback | For webmasters