Related Experiment Video

Updated: May 27, 2026

A Microscopic 2,3,5-Triphenyltetrazolium Chloride Assay for Accurate and Reliable Analysis of Myocardial Injury
11:17

A Microscopic 2,3,5-Triphenyltetrazolium Chloride Assay for Accurate and Reliable Analysis of Myocardial Injury

Published on: November 28, 2025

Stabilizing microtubules decreases myocardial ischaemia-reperfusion injury

H-M Cao1, Q Wang, H-Y You

  • 1Department of Cardiology, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, Jiangsu Province, China.

The Journal of International Medical Research
|November 29, 2011
PubMed

Insights

Stabilizing microtubules with paclitaxel reduced heart injury from ischemia-reperfusion. This treatment significantly decreased infarct size and the occurrence of ventricular arrhythmias in isolated rat hearts.

Area of Science:

  • Cardiovascular Science
  • Cell Biology
  • Pharmacology

Background:

  • Microtubules are crucial cytoskeletal elements maintaining myocardial architecture.
  • Myocardial ischemia-reperfusion injury is a significant clinical concern.
  • Ventricular arrhythmias and infarct expansion are severe consequences of ischemia-reperfusion.

Purpose of the Study:

  • To investigate the protective effects of paclitaxel, a microtubule-stabilizing agent, against myocardial ischemia-reperfusion injury.
  • To determine if paclitaxel can reduce infarct size and the incidence of ischemic ventricular arrhythmias.

Main Methods:

  • Isolated rat hearts were subjected to regional ischemia followed by reperfusion.
  • Myocardial infarcts and ventricular arrhythmias were induced using established ex vivo protocols.
  • Paclitaxel was administered at concentrations of 0.1 μM and 1 μM.

Main Results:

  • Paclitaxel administration significantly decreased myocardial ischemia-reperfusion injury.
  • Treatment with paclitaxel led to a significant reduction in both the incidence and severity of ischemic ventricular arrhythmias.
  • A significant decrease in myocardial infarct size was observed in paclitaxel-treated hearts.

Conclusions:

  • Stabilization of microtubules with paclitaxel confers significant protection against myocardial ischemia-reperfusion injury.
  • Paclitaxel demonstrates therapeutic potential in mitigating arrhythmias and reducing infarct size in ischemic heart conditions.
  • Targeting the microtubule cytoskeleton may represent a novel therapeutic strategy for managing cardiac ischemia.

More Related Videos

Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation09:53

Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation

Published on: January 10, 2025

Improved Rodent Model of Myocardial Ischemia and Reperfusion Injury07:23

Improved Rodent Model of Myocardial Ischemia and Reperfusion Injury

Published on: March 7, 2022

Related Concept Videos

Drugs that Stabilize Microtubules01:15

Drugs that Stabilize Microtubules

Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...
Destabilization of Microtubules01:45

Destabilization of Microtubules

The destabilization of microtubules can occur during different stages of the microtubule lifecycle, such as nucleation or elongation. It can take place at either end of the microtubule or in the microtubule lattices as a whole. The lifespan of individual microtubules within a cell varies according to the cell type and stage of the cell cycle. During interphase, the lifespan of the microtubule is about 30 minutes, while during cell division, it is about 15 minutes. In axonal microtubules of...
Microtubule Instability02:17

Microtubule Instability

Microtubules are hollow cylindrical filaments having a diameter of approximately 25 nm and a length that varies from 200 nm to 25 μm. GTP-bound tubulin subunits form αβ-heterodimers for microtubule assembly. These core building blocks interact longitudinally, polymerizing into protofilaments. The protofilaments then interact with one another through lateral bonding forces to form stable cylindrical microtubules. These cylindrical filaments are dynamic as they undergo repeated assembly and...
Drugs that Destabilize Microtubules01:10

Drugs that Destabilize Microtubules

Microtubules are dynamic structures and can be regulated by microtubule targeting agents (MTAs). Microtubule destabilizing drugs are a class of MTAs that destabilize and prevent microtubules' polymerization. Both natural and synthetic chemicals can be found under this class of drugs. Vincristine and vinblastine, two vinca alkaloids, and colchicine were among the first to be discovered. These drugs can affect cells in various ways, either by inducing a change in cell morphology, preventing...