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Application of tanshinone I to treatment of microglia-mediated disease

A technology of microglia and tanshinone, applied in the field of tanshinone I, can solve the problems of decreased curative effect, toxic and side effects, etc.

Inactive Publication Date: 2012-07-11
TIANJIN UNIV OF TRADITIONAL CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are problems such as obvious toxic and side effects in clinical treatment, and the curative effect decreases with the prolongation of taking the medicine.

Method used

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  • Application of tanshinone I to treatment of microglia-mediated disease
  • Application of tanshinone I to treatment of microglia-mediated disease
  • Application of tanshinone I to treatment of microglia-mediated disease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1: Effect of Tanshinone I on Microglia Activation-Induced Cell Death (AICD)

[0065] BV-2 cells were pre-incubated with tanshinone I (1, 5, 10, 20 μmol / L) for 0.5 h, and then stimulated with LPS (lipopolysaccharide, 0.1 μg / mL). After culturing for 24 hours, discard the supernatant, add CCK-8 (cell counting reagent, Guangzhou Yanchuang Biotechnology Co., Ltd.), continue to incubate for 30 minutes, and measure the absorbance at a wavelength of 450 nm. The experiment also set up the control group (normally growing cells), the model group (LPS) and the positive control group "Mino+LPS" group (5 μmol / L minocycline+lipopolysaccharide) in parallel. see results figure 1 .

[0066] The results showed that LPS can cause activation-induced cell death and significantly reduce the viability of BV-2 cells. Tanshinone I can inhibit LPS-induced activation-induced cell death in a dose-dependent manner.

[0067] In addition, "extract A" and "extract B" were tested as reagen...

Embodiment 2

[0068] Example 2: Effect of Tanshinone I on Viability of Microglial Cells

[0069] After BV-2 cells were cultured with tanshinone I (1, 5, 10, 20 μmol / L) for 24 hours, discard the supernatant, add CCK-8, continue to incubate for 30 minutes, and measure the absorbance at a wavelength of 450 nm. In the experiment, the control group (cells with normal growth) and the "Mino" group were set up in parallel. see results figure 2 .

[0070] The results showed that tanshinone I could not inhibit cell viability and did not cause cell death.

Embodiment 3

[0071] Example 3: Effect of Tanshinone I on Secretion of Inflammatory Mediators by Microglia

[0072] The mouse microglial cell line BV-2 was cultured in complete DMEM medium. Inoculate into 48-well culture plate overnight, add different concentrations of Tanshinone I (final concentration 1, 5, 10, 20 μmol / L) for pre-incubation for 0.5 h, and then add endotoxin (LPS, final concentration 0.1 μg / mL) for stimulation . Experimental groups: normal control group, LPS group, Tanshinone I plus LPS group, and "Mino+LPS" group. The concentration of NO was detected by Greiss method, and the concentration of TNF-α was measured by Elisa kit. see results image 3 .

[0073] The results showed that Tanshinone I could significantly inhibit the release of NO and TNF-α induced by LPS in a dose-dependent manner within the concentration range of 1-20 μmol / L.

[0074] In addition, "extract A" and "extract B" were tested as reagents, and the two extracts showed the same dose as the pure tans...

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Abstract

The invention relates to an application of tanshinone I shown in a formula I to the treatment of a microglia-mediated disease, in particular to an application of tanshinone I to the preparation of a medicament for treating and / or preventing the microglia-mediated disease, in particular to an application of tanshinone I to preparation of a medicament for treating and / or preventing psychoneuroimmunology chronic inflammatory diseases caused by microglia-mediated neurotoxic effects. The tanshinone I provided by the invention has the novel functions of remarkably suppressing microglia cell-activated and induced cell death, suppressing the generation and expression of inflammatory mediators, i.e., NO and TNF alpha of microglia cells, and remarkably lowering the cell toxicity of activated microglia cells on neurons, the tanshinone I can be applied to prevention and treatment of brain immune inflammation-related diseases such as Alzheimer's disease, Parkinson's disease, and the like. The formula I is shown in the specifications.

Description

technical field [0001] The present invention relates to a new application of tanshinone I, in particular to the treatment and / or prevention of tanshinone I mediated neuroimmune inflammation-related diseases, such as Alzheimer's disease, Parkinson's disease, traumatic brain injury, encephalitis , multiple sclerosis and other diseases. Background technique [0002] Salvia miltiorrhiza is the dried root and rhizome of salvia miltiorrhiza Bge., a plant in the Labiatae family, and is a commonly used traditional Chinese medicine in my country. Modern research shows that the chemical composition of Salvia miltiorrhiza is mainly divided into two parts: water-soluble and fat-soluble. The water-soluble components mainly include salvianolic acid A, salvianolic acid B, etc. The fat-soluble components mainly include tanshinone II A and II B, as well as tanshinone I, cryptotanshinone, hydroxytanshinone, hydroxy tanshinone, etc. (Chinese Wild Plant Resources, 2003, 22(6): 1-4). It has b...

Claims

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Application Information

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IPC IPC(8): A61K31/343A61K36/537A61K36/344A61P25/00A61P37/02A61P29/00A61P25/28A61P25/16A61P25/14A61K125/00
Inventor 王少峡胡利民高秀梅王虹康立源
Owner TIANJIN UNIV OF TRADITIONAL CHINESE MEDICINE
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