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Ginger compounds may be effective in treating asthma symptoms
Date:5/19/2013

purified ginger components and isoproterenol exhibited significantly greater relaxation than those treated only with isoproterenol; of the three ginger components, 6-shogaol appeared most effective in increasing the relaxing effects of the β-agonist.

Once they were able to demonstrate that the ginger components enhanced the relaxing effects of the β-agonist, they turned their attention to learning why. First, the researchers wanted to determine if the ginger components might work by affecting an enzyme called phosphodiesterase4D (PDE4D). Previous studies have shown that PDE4D, which is found in the lungs, inhibits processes that otherwise help relax ASM and lessen inflammation. Using a technique called fluorescent polarization, they found that all three components significantly inhibited PDE4D.

Next, the study looked at F-actin filaments, a protein structure which previous studies have shown plays a role in the constriction of ASM, and found that 6-shogaol was effective in speedily dissolving these filaments.

"Taken together, these data show that ginger constituents 6-gingerol, 8-gingerol and 6-shogaol act synergistically with the β-agonist in relaxing ASM, indicating that these compounds may provide additional relief of asthma symptoms when used in combination with β-agonists," Dr. Townsend noted."By understanding the mechanisms by which these ginger compounds affect the airway, we can explore the use of these therapeutics in alleviating asthma symptoms."

Dr. Townsend and her colleague, Dr. Charles Emala, hope future studies will enable them to gain a better understanding of the cellular mechanisms that facilitate ASM relaxation and to determine whether aerosol delivery of these purified constituents of ginger may have therapeutic benefit in asthma and other bronchoconstrictive diseases.


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Contact: Nathaniel Dunford
ndunford@thoracic.org
American Thoracic Society
Source:Eurekalert

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