B(MAO-B)

Seeking the Source of Alzheimer’s Disease with Ground Breaking Study

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Synapse in brainThe question over the exact causes of Alzheimer’s disease has long been at the heart of research into the condition that affects so many of our loved ones. In a recent article by Lauren Horne, she details new research into the cause and possible treatment of Alzheimer’s disease. The study that was published in June 2014 in “Nature Medicine,” the well respected medical journal, examines the theorized effect of reactive astrocytes in the development of the disease. The study was carried out under the auspices of Drs. C. Justin Lee and Daesoo Kim in Korea and their paper was published with the title: “GABA from reactive astrocytes impairs memory in mouse models of Alzheimer’s disease.”

As described in the title of the paper, the focus of this research was centered around the effects of the reactive astrocytes. In particular, Lee and Kim pointed to the fact that these reactive astrocytes are often found in large percentages in the brains of patients with Alzheimer’s disease and are known to produce GABA, a neurotransmitter inhibitor. As they found that the reactive astrocytes were producing the GABA through Monoamine oxidase B(MAO-B), an enzyme that then passed on the GABA into the system through the BESt1 channel, they decided to target the B(MAO-B) in their testing.

What they found was that when they used the Parkinson’s disease drug Selegiline as an inhibitor to bring the levels of the GABA back to more normal numbers, they were able to succeed in slowing down the firing of neurons in the brain. In their tests that they carried out on mice with Alzheimer’s disease in the labs, those subjects who received the inhibitor treatment exhibited signs of improved memory that were consistent with their theory.

Unfortunately these results did not leave any lasting changes on the mice as the effect of the drugs wore off. However, to all those who are invested in finding a cure for Alzheimer’s disease, this study has provided valuable knowledge and new insights that may soon lead to a treatment.

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