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Granulocyte colony-stimulating factor attenuates early ventricular expansion after experimental myocardial infarction.
Cardiovasc Res. 2005 Feb 01; 65(2):446-56.CR

Abstract

OBJECTIVE

In the early phase after transmural myocardial infarction (MI), the infarcted myocardium undergoes replacement by scar tissue, which is essential for preserving the structural integrity of the infarcted tissue. Transforming growth factor (TGF)-beta1, which is known as a fibrotic cytokine, plays a pivotal role in the reparative fibrosis after MI. It is reported that granulocyte colony-stimulating factor (G-CSF) can accelerate wound healing. The aim of our study was to investigate the effect of G-CSF on early ventricular expansion after MI.

METHODS

MI was induced by ligation of the left coronary artery in male Wistar rats. G-CSF (20 microg/kg/day, MI-GCSF) or saline (MI-saline) was injected subcutaneously 3 h after MI and every 24 h thereafter for 7 days. Hemodynamic and echocardiographic studies were performed at 14 days. Expression of TGF-beta1 and procollagen type I and type III mRNA in both the infarcted and noninfarcted areas was studied by quantitative RT-PCR at 1, 3, 7, and 14 days after MI. Histological studies were performed at 7 days.

RESULTS

MI-GCSF had higher LV max dP/dt, lower LV end-diastolic pressure, and smaller LV end-diastolic and end-systolic dimensions compared to MI-saline. Infarct size was not different between MI-GCSF and MI-saline. Expression of TGF-beta1 mRNA in the infarcted area at 3 days was significantly higher in MI-GCSF than in MI-saline. Expression of procollagen type I and type III mRNA in the infarcted area at 3 days was higher in MI-GCSF compared to MI-saline, and the peak mRNA levels were earlier in MI-GCSF. In the noninfarcted area, there was no difference in TGF-beta1 mRNA expression between MI-GCSF and MI-saline. Histologically, collagen accumulation in the infarcted area at 7 days was more prominent in MI-GCSF than in MI-saline.

CONCLUSION

G-CSF treatment improves early post-infarct ventricular expansion through promotion of reparative collagen synthesis in the infarcted area, suggesting some beneficial effect of G-CSF on the infarct healing process.

Authors+Show Affiliations

Division of Cardiology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15639484

Citation

Sugano, Yasuo, et al. "Granulocyte Colony-stimulating Factor Attenuates Early Ventricular Expansion After Experimental Myocardial Infarction." Cardiovascular Research, vol. 65, no. 2, 2005, pp. 446-56.
Sugano Y, Anzai T, Yoshikawa T, et al. Granulocyte colony-stimulating factor attenuates early ventricular expansion after experimental myocardial infarction. Cardiovasc Res. 2005;65(2):446-56.
Sugano, Y., Anzai, T., Yoshikawa, T., Maekawa, Y., Kohno, T., Mahara, K., Naito, K., & Ogawa, S. (2005). Granulocyte colony-stimulating factor attenuates early ventricular expansion after experimental myocardial infarction. Cardiovascular Research, 65(2), 446-56.
Sugano Y, et al. Granulocyte Colony-stimulating Factor Attenuates Early Ventricular Expansion After Experimental Myocardial Infarction. Cardiovasc Res. 2005 Feb 1;65(2):446-56. PubMed PMID: 15639484.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Granulocyte colony-stimulating factor attenuates early ventricular expansion after experimental myocardial infarction. AU - Sugano,Yasuo, AU - Anzai,Toshihisa, AU - Yoshikawa,Tsutomu, AU - Maekawa,Yuichiro, AU - Kohno,Takashi, AU - Mahara,Keitaro, AU - Naito,Kotaro, AU - Ogawa,Satoshi, PY - 2004/05/07/received PY - 2004/10/01/revised PY - 2004/10/04/accepted PY - 2005/1/11/pubmed PY - 2005/3/3/medline PY - 2005/1/11/entrez SP - 446 EP - 56 JF - Cardiovascular research JO - Cardiovasc Res VL - 65 IS - 2 N2 - OBJECTIVE: In the early phase after transmural myocardial infarction (MI), the infarcted myocardium undergoes replacement by scar tissue, which is essential for preserving the structural integrity of the infarcted tissue. Transforming growth factor (TGF)-beta1, which is known as a fibrotic cytokine, plays a pivotal role in the reparative fibrosis after MI. It is reported that granulocyte colony-stimulating factor (G-CSF) can accelerate wound healing. The aim of our study was to investigate the effect of G-CSF on early ventricular expansion after MI. METHODS: MI was induced by ligation of the left coronary artery in male Wistar rats. G-CSF (20 microg/kg/day, MI-GCSF) or saline (MI-saline) was injected subcutaneously 3 h after MI and every 24 h thereafter for 7 days. Hemodynamic and echocardiographic studies were performed at 14 days. Expression of TGF-beta1 and procollagen type I and type III mRNA in both the infarcted and noninfarcted areas was studied by quantitative RT-PCR at 1, 3, 7, and 14 days after MI. Histological studies were performed at 7 days. RESULTS: MI-GCSF had higher LV max dP/dt, lower LV end-diastolic pressure, and smaller LV end-diastolic and end-systolic dimensions compared to MI-saline. Infarct size was not different between MI-GCSF and MI-saline. Expression of TGF-beta1 mRNA in the infarcted area at 3 days was significantly higher in MI-GCSF than in MI-saline. Expression of procollagen type I and type III mRNA in the infarcted area at 3 days was higher in MI-GCSF compared to MI-saline, and the peak mRNA levels were earlier in MI-GCSF. In the noninfarcted area, there was no difference in TGF-beta1 mRNA expression between MI-GCSF and MI-saline. Histologically, collagen accumulation in the infarcted area at 7 days was more prominent in MI-GCSF than in MI-saline. CONCLUSION: G-CSF treatment improves early post-infarct ventricular expansion through promotion of reparative collagen synthesis in the infarcted area, suggesting some beneficial effect of G-CSF on the infarct healing process. SN - 0008-6363 UR - https://www.unboundmedicine.com/medline/citation/15639484/Granulocyte_colony_stimulating_factor_attenuates_early_ventricular_expansion_after_experimental_myocardial_infarction_ L2 - https://academic.oup.com/cardiovascres/article-lookup/doi/10.1016/j.cardiores.2004.10.008 DB - PRIME DP - Unbound Medicine ER -