Dopamine D2 Receptors and Heart Cell Death
Author Information
Author(s): Li Hong-zhu, Guo Jin, Gao Jun, Han Li-ping, Jiang Chun-ming, Li Hong-xia, Bai Shu-zhi, Zhang Wei-hua, Li Guang-wei, Wang Li-na, Li Hong, Zhao Ya-jun, Lin Yan, Tian Ye, Yang Guang-dong, Wang Rui, Wu Ling-yun, Yang Bao-feng, Xu Chang-qing
Primary Institution: Harbin Medical University
Hypothesis
The study investigates the role of dopamine D2 receptors in cardiomyocyte apoptosis induced by ischemia/reperfusion injury.
Conclusion
Activation of dopamine D2 receptors can inhibit apoptosis of cardiomyocytes during ischemia/reperfusion damage through various pathways.
Supporting Evidence
- Bromocriptine significantly decreased lactate dehydrogenase activity.
- Bromocriptine increased superoxide dismutase activity.
- Bromocriptine decreased malondialdehyde content in the culture medium.
- Bromocriptine inhibited the release of cytochrome c and apoptosis induced by ischemia/reperfusion injury.
Takeaway
This study shows that a chemical called bromocriptine can help heart cells survive better when they are hurt by a lack of oxygen and then getting it back.
Methodology
Neonatal rat cardiomyocytes were subjected to simulated ischemia/reperfusion injury and treated with bromocriptine or haloperidol to assess apoptosis.
Limitations
The effective concentration of bromocriptine used in the study is much higher than typical therapeutic levels.
Participant Demographics
Newborn Wistar rats (1-3 days old) were used for the study.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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