Cited by 129Cardiac Ischemia and ReperfusionNanoparticle-Based Drug DeliveryAdenosine and Purinergic Signaling

Prolonged Targeting of Ischemic/Reperfused Myocardium by Liposomal Adenosine Augments Cardioprotection in Rats

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Takahama, Hiroyuki, Minamino, Tetsuo, Asanuma, Hiroshi, Fujita, Masashi, Asai, Tomohiro, Wakeno, Masakatsu, Sasaki, Hideyuki, Kikuchi, Hiroshi +9 more·2009·Journal of the American College of Cardiology

Abstract

Objectives The purpose of this study was to investigate whether liposomal adenosine has stronger cardioprotective effects and fewer side effects than free adenosine.Background Liposomes are nanoparticles that can deliver various agents to target tissues and delay degradation of these agents. Liposomes coated with polyethylene glycol (PEG) prolong the residence time of drugs in the blood. Although adenosine reduces the myocardial infarct (MI) size in clinical trials, it also causes hypotension and bradycardia.Methods We prepared PEGylated liposomal adenosine (mean diameter 134 +/- 21 nm) by the hydration method. In rats, we evaluated the myocardial accumulation of liposomes and MI size at 3 h after 30 min of ischemia followed by reperfusion.Results The electron microscopy and ex vivo bioluminescence imaging showed the specific accumulation of liposomes in ischemic/reperfused myocardium. Investigation of radioisotope-labeled adenosine encapsulated in PEGylated liposomes revealed a prolonged blood residence time. An intravenous infusion of PEGylated liposomal adenosine (450 microg/kg/min) had a weaker effect on blood pressure and heart rate than the corresponding dose of free adenosine. An intravenous infusion of PEGylated liposomal adenosine (450 microg/kg/min) for 10 min from 5 min before the onset of reperfusion significantly reduced MI size (29.5 +/- 6.5%) compared with an infusion of saline (53.2 +/- 3.5%, p < 0.05). The antagonist of adenosine A(1), A(2a), A(2b), or A(3) subtype receptor blocked cardioprotection observed in the PEGylated liposomal adenosine-treated group.Conclusions An infusion as PEGylated liposomes augmented the cardioprotective effects of adenosine against ischemia/reperfusion injury and reduced its unfavorable hemodynamic effects. Liposomes are promising for developing new treatments for acute MI.

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Crossref · 10.1016/j.jacc.2008.11.014

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  • PEGylated liposome-dependent adenosine delivery shows effective cardioprotection by delivering more adequate adenosine concentration in ischemic myocardium rat model than free adenosine.

    “In this regard, PEGylated liposome-dependent adenosine delivery shows effective cardioprotection by delivering a more adequate adenosine concentration in the ischemic myocardium rat model than does free adenosine.159”

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  1. min Mean blood pressure (mm Hg) Lp-Ado ϩ 8SPT 120 Ϯ 6 113 Ϯ 4 112 Ϯ 6 112 Ϯ 5 107 Ϯ 6 102 Ϯ 8 109 Ϯ 7 Lp-Ado ϩ DPCPX 130 Ϯ 6 105 Ϯ 4 121 Ϯ 4 100 Ϯ 10 122 Ϯ 6 120 Ϯ 6 111 Ϯ 4 Lp-Ado ϩ SCH58261 132 Ϯ 2 9 8 Ϯ 12 99 Ϯ 8 110 Ϯ 8 118 Ϯ 10 113 Ϯ 10 109 Ϯ 6 Lp-Ado ϩ MRS1754 130 Ϯ 3 9 5 Ϯ 12 106 Ϯ 8 105 Ϯ 10 100 Ϯ 10 96 Ϯ 10 99 Ϯ 7 Lp-Ado ϩ MRS1523 130 Ϯ 2 109 Ϯ 8 104 Ϯ 8 105 Ϯ 9 100 Ϯ 9 101 Ϯ 10 104 Ϯ 6 Heart rate (beats/min) Lp-Ado ϩ 8SPT 404 Ϯ 17 385 Ϯ 10 374 Ϯ 8 396 Ϯ 8 389 Ϯ 9 383 Ϯ 8 385 Ϯ 9 Lp-Ado ϩ DPCPX 396 Ϯ 24 380 Ϯ 11 399 Ϯ 9 398 Ϯ 12 385 Ϯ 9 382 Ϯ 9 380 Ϯ 7 Lp-Ado ϩ SCH58261 393 Ϯ 14 399 Ϯ 15 381 Ϯ 9 395 Ϯ 15 376 Ϯ 9 373 Ϯ 9 385 Ϯ 7 Lp-Ado ϩ MRS1754 398 Ϯ 14 392 Ϯ 11 401 Ϯ 9 379 Ϯ 15 378 Ϯ 9 374 Ϯ 9 377 Ϯ 7 Lp-Ado ϩ MRS1523 396 Ϯ 9 390 Ϯ 11 390 Ϯ 11 392 Ϯ 10 373 Ϯ 9 391 Ϯ 7 388 Ϯ 11 Values were expressed as mean Ϯ SEM. ‫ء‬p Ͻ 0.05 versus baseline. Lp-Ado ϭ PEGylated liposomal adenosine; PEG ϭ polyethylene glycol; Vehicle ϭ PEGylated liposomes. 715 JACC Vol. 53, No. 8, 2009 Takahama et al. February 24, 2009:709-17 Drug Delivery System Targeting Injured Myocardium REFERENCES
  2. Yaar R, Jones MR, Chen JF, Ravid K. Animal models for the study of adenosineÅreceptor function. J Cell Physiol 2005;202:9 -20.

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Authors
Takahama, H., Minamino, T., Asanuma, H., Fujita, M., Asai, T., Wakeno, M., Sasaki, H., Kikuchi, H., Hashimoto, K., Oku, N., Asakura, M., Kim, J., Takashima, S., Komamura, K., Sugimachi, M., Mochizuki, N., & Kitakaze, M.
Affiliations
  • National Cerebral and Cardiovascular Center (JP)
  • The University of Osaka (JP)
  • Shizuoka University (JP)
  • Daiichi-Sankyo (Japan) (JP)
Corresponding author
Minamino, Tetsuo
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
2009-02
Volume
53
Issue
8
Pages
709-717
ISSN
0735-1097 (ISSN-L)
OpenAlex
W2048350889
Cited by
129
References
21
Citations by year
2026: 5 · 2025: 4 · 2024: 10 · 2023: 7 · 2022: 3 · 2021: 11 · 2020: 5 · 2019: 10 · 2018: 6 · 2017: 11 · 2016: 6 · 2015: 11 · 2014: 6 · 2013: 5 · 2012: 9
FWCI
6.57
Type
journal article
Language
en
Open access
Locations
  • Journal of the American College of Cardiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Cardiovascular Research Foundation
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Adenosine and Purinergic Signaling
Keywords
PEGylated liposomes, myocardial ischemia-reperfusion injury, cardioprotection, myocardial infarct size, adenosine receptor antagonists, drug delivery, blood residence time, acute myocardial infarction
MeSH terms
Adenosine, Animals, Blood Pressure, Cardiotonic Agents, Dose-Response Relationship, Drug, Drug Carriers, Fluorescence, Infusions, Intravenous, Liposomes, Male, Myocardial Infarction, Myocardium, Polyethylene Glycols, Vasodilator Agents, Myocardial Reperfusion Injury, Rats, Wistar, Rats

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