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Function and application of growth differentiation factor 1 (GDF1) to coronary atherosclerotic heart disease

A technology for coronary atherosclerosis and heart disease, applied in the field of gene function and application, can solve problems such as death, arrhythmia, and cardiac insufficiency

Active Publication Date: 2014-07-02
武汉惠康达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] After myocardial infarction, only a small number of myocardial cells divide and proliferate, unable to effectively and completely repair myocardial tissue. Therefore, the myocardium in the infarcted area can only be replaced by scar tissue without contractile function through fibrous tissue hyperplasia, thereby causing severe arrhythmia, Heart failure or even death

Method used

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  • Function and application of growth differentiation factor 1 (GDF1) to coronary atherosclerotic heart disease
  • Function and application of growth differentiation factor 1 (GDF1) to coronary atherosclerotic heart disease
  • Function and application of growth differentiation factor 1 (GDF1) to coronary atherosclerotic heart disease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] [Example 1] Myocardial infarction (MI) model acquisition

[0030] 1. Grouping of experimental animals: male C57BL / 6 background MEM-Cre mice, GDF1 knockout mice (GDF1-KO), heart-specific GDF1 transgenic mice (GDF1-TG) and non-transgenic mice (NTG), Myocardial infarction (MI) model was induced by ligating the left anterior descending coronary artery (LAD) of the mouse heart. They were randomly divided into 8 groups, each group: C57BL / 6 background MEM-Cre mice sham operation group (MEM-Cre Sham) and MI operation group (MEM-Cre MI), GDF1 gene knockout mouse sham operation group (GDF1- KO Sham) and MI operation group (GDF1-KO MI), non-transgenic mouse sham operation group (NTG Sham) and MI operation group (NTG MI), heart-specific GDF1 transgenic mouse sham operation group (GDF1-TG Sham) and MI surgery group (GDF1-TG MI).

[0031] 2. The MI model uses blocking the left anterior descending coronary artery (LAD) of the mouse heart to cause myocardial infarction. The operation...

Embodiment 2

[0040] [Example 2] Detection of myocardial infarction ratio, myocardial hypertrophy and fibrosis in mouse myocardial infarction (MI) model

[0041] 1. Collect materials

[0042] (1) Preliminary work: prepare a urine cup filled with 20mL of 10% formaldehyde in advance, and label it (mouse number, group, type of operation and date of collection). Place the petri dish filled with 10% KCl solution at the sampling site. Turn on the analytical balance, adjust to zero, and then weigh and kill the mice.

[0043] (2) Material collection: Ophthalmic curved forceps clamped the vascular pedicle below the atrial appendage, cut off the heart, and quickly placed it in 10% KCl solution. After the heart stops beating in the diastolic phase, place it on sterilized gauze, gently squeeze the fluid in the heart cavity, dip the surface fluid dry, weigh and record, put the heart into the corresponding urine cup, fix it for 48 hours and use it for pathological testing.

[0044] (3) Relevant measu...

Embodiment 3

[0064] [Example 3] Detection of cardiac function in myocardial infarction (MI) model mice

[0065] 1 Ultrasound detection of cardiac function

[0066] 1.1 Early preparations

[0067] (1) Anesthesia machine preparation: first connect the oxygen cylinder and the air inlet port on the anesthesia machine, then unscrew the sealing cap of the dosing port on the anesthesia machine, quickly add isoflurane to the safety scale, and then tighten the sealing cap. Unscrew the main valve on the oxygen cylinder, adjust the knob of the flow control valve, and maintain the outlet pressure at 0.2-0.3mPa.

[0068] (2) Preparation of the mice to be tested: After the mice to be tested were quickly anesthetized with isoflurane, the hair on the left chest area was shaved, and the head of the treated mice was inserted into the anesthetic catheter sleeve, and treated with 1.5-2.0% isoflurane Alkane maintains a stable anesthesia in mice.

[0069] 1.2 Cardiac function test

[0070] The mice were pla...

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Abstract

The invention discloses function and application of a growth differentiation factor 1 (GDF1) to coronary atherosclerotic heart disease. A GDF1 knockout mouse and a cardiac specific GDF1 transgenic mouse are taken as experimental objects, and research is performed on myocardial infarction models constructed by blocking the cardiac left anterior descending coronary arteries of the mice. As proved by a result, compared with an MEM-Cre control mouse, the GDF1 knockout mouse is remarkably higher in the cardiac infarct proportion, cardiac hypertrophy and fibrosis degree with heart function deteriorating remarkably; the cardiac specific GDF1 transgenic mouse is remarkably inhibited in the cardiac infarct proportion, cardiac hypertrophy and fibrosis degree with heart function being improved remarkably. Thus, a GDF1 gene plays a role in protecting coronary atherosclerotic heart disease. Specific to the function of GDF1, the GDF1 can be used for preparing medicaments for treating coronary atherosclerotic heart disease.

Description

[0001] technical field [0002] The invention belongs to the field of gene function and application, in particular to the function and application of a growth differentiation factor 1 (GDF1) gene in coronary atherosclerotic heart disease. Background technique [0003] Cardiovascular disease is the disease with the highest death rate worldwide and the number one killer of human health. Ischemic heart disease is the leading cause of death from cardiovascular disease. Coronary atherosclerotic heart disease is a disease in which a large amount of lipid deposits on the inner wall of the coronary arteries supplying the myocardium to form plaques, and thrombus narrows or blocks the coronary arteries, causing myocardial ischemia, hypoxia or necrosis. Myocardial infarction (MI) is a common type of ischemic heart disease, which means that on the basis of coronary artery disease, the blood flow of coronary arteries is interrupted, causing severe and persistent acute ischemia in the cor...

Claims

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Application Information

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IPC IPC(8): A61K38/18A61K48/00A61P9/00A61P9/10
Inventor 李红良张艳蒋丁胜王丕晓刘小熊
Owner 武汉惠康达科技有限公司
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