Home
Resources
Publications
Histopathological and Functional Changes in a Single-Dose Model of Combretastatin A4 Disodium Phosphate-Induced Myocardial Damage in Rats

Histopathological and Functional Changes in a Single-Dose Model of Combretastatin A4 Disodium Phosphate-Induced Myocardial Damage in Rats

Ryota Tochinai, Kayoko Komatsu, Junta Murakami, Yuriko Nagata, Minoru Ando, Chie Hata, Tomo Suzuki, Shoichi Kado, Toshihide Kobayashi, Masayoshi Kuwahara

J Toxicol Pathol. 2018 Oct;31(4):307-313.

PMID: 30393435

Abstract:

Cardiotoxicity is a concern in the development of microtubule-disassembling agents (MDAs) as vascular-disrupting agents of tumors. This study investigated cardiotoxicity in rats induced by a single-dose of combretastatin A4 disodium phosphate (CA4DP), an MDA and discussed the use of this rat model in nonclinical studies of MDAs. First, CA4DP (120 mg/kg) was administered to rats intravenously, and cardiac histopathology and blood biomarkers were examined after 0.5, 24, and 72 h. Next, CA4DP (120 mg/kg) was administered to rats intravenously, and the electrocardiography and echocardiography results were analyzed. The results showed that at 0.5 h after dosing, plasma creatine kinase (CK), CK-muscle/brain (CK-MB), and fatty acid binding protein 3 levels increased. At 24 h, lactate dehydrogenase (LDH)-1, CK, and CK-MB levels increased, and multifocal vacuolar degeneration of myocardial cells was observed in the apical inner layer. At 72 h, LDH-1 levels were increased, and multifocal myocardial necrosis was observed in the interventricular septum and inner layer of the apex of left ventricular wall. Furthermore, at 0.5 h, heart rate (HR), ejection fraction (EF), and cardiac output (CO) decreased. At 24 h, CO decreased. Finally, at 72 h, HR, EF, and CO decreased, and depression of the T-wave amplitude was observed. In conclusion, myocardial injury, bradycardia, and depressed cardiac function were induced in rats by a single-dose of CA4DP. The lesion distribution and electrocardiographic features suggested that myocardial injury was induced by ischemia. These findings are similar to MDA-induced cardiotoxicity in humans, and this rat model will prove useful in studies of the cardiotoxicity in humans.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP168555666	Fosbretabulin disodium		168555-66-6	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: