Inflammation: a response by damaged or infected cells to attract immune cells.
Neurodegeneration: the loss of neurons over time through cell death, typically associated with disease like Alzheimer's and Parkinson's... more
Ultrasound: a technique for making an image of what is inside the body......more
You’re walking to the grocery store, thinking of what you need to buy. Six things are on your list, and you repeat them a few times as you walk. A bicycle passes by, reminding you of the last time you went for a ride. You smile at someone walking in the other direction, and they smile back, which makes you feel good. All of these actions have a very big thing in common—they are all controlled by your brain.
Your brain is involved in everything you do. It stores and recalls your memories, it lets you move in coordinated ways, and it can make you feel happy or sad.
Imagine if you had trouble remembering or walking, or if you only ever felt sad. For many people, this becomes their daily life due to damage to the brain. You may have heard of diseases such as Alzheimer’s and Parkinson’s. People with Alzheimer’s often have trouble remembering recent events. They also struggle with planning and often get lost. With Parkinson’s, people have trouble controlling their body. Often they will experience “tremors” of their hands or head. These are some of the brain diseases that affect millions of people. And it is Jeffrey Kordower’s goal to discover ways to identify and treat such problems.
Neurodegeneration is all about the special cells in your brain. These cells, called neurons, carry out many important functions. The diseases are caused by the death of these neurons in different brain areas.
One of the more well-known illnesses is Alzheimer’s disease. It often starts with damage to the hippocampus, an area that helps you make and recall memories. It then often moves into areas of the brain involved in language and reasoning. Parkinson’s is caused by the loss of neurons in a brain region known as the substantia nigra, which helps to control movement.
One of the most important questions in the study of neurodegeneration is: what causes these neurons to die? Learning what causes these diseases and stopping it before it starts is often much easier than trying to reverse it. We have some hints that proteins are part of the problem. After the proteins are made, they tangle up and can almost choke neurons. What’s unclear is if this causes the death of neurons or if it’s something else. The Kordower lab studies how the number and types of proteins change due to Parkinson’s and Alzheimer’s. It’s unclear whether this is passed down from parent to child or if something in the environment plays a role.
The top goal for Kordower is identifying the cause of these diseases. Another goal is helping those who already have it. There are many problems with trying to treat brain illnesses, one of which is the blood brain barrier. This barrier acts like a security guard, only letting certain things in while blocking others. Normally this protects the brain from bacteria and unwanted chemicals. However, many of the drugs that we create have trouble getting past the blood brain barrier. Kordower is using ultrasound to open up the cells of the blood brain barrier to get around this. If you can focus the ultrasound to a very small area of the blood brain barrier you can open up it up. Then you can sneak around the guards and get your drug where it needs to be.
Another key discovery that Kordower made is that these neurons can be replaced! Under the right conditions replaced cells can grow normally and form the same connections as the lost neurons. By moving these cells into the brain of Parkinson’s patients, they were able to restore some of their movement control. While problems can arise, with some more fine-tuning this may prove to be a reliable treatment.
Trying to take on all of these questions requires more than one brain. Kordower wanted to bring together a group of scientists to tackle these problems. He is the first director for the Neurodegenerative Disease Research Center established by Barrow and ASU's Biodesign institute. As the founding director, he leads the direction and research goals of the center. He is hiring scientists who are experts on different issues in the study of these diseases.
One angle Kordower wants to explore is how the brain responds to inflammation. Usually inflammation helps protect your body from injury and germs. In the process some of your cells may die. However, most of the body can replace these lost cells. Brains, however, can’t recover those lost cells. Is the inflammation making brain disease worse or is it helping? This is just one of the many questions the center hopes to answer.
One of the goals Kordower has for the center is to go beyond the patients. He is concerned with how the caretakers of those with these diseases are impacted as well. Often the caretakers are the family of the patient, and they struggle with stress and depression. Scientists of the center are using software to try to reduce the stress of caretakers and improve their quality of life. Kordower hopes to reshape how we view neurodegeneration and how it affects the lives of those who it touches.
Additional images via Wikimedia Commons. Image of Brain Project sculpture by Sharon VanderKaay via Wikimedia Commons.
Christopher Albin-Brooks. (2022, November 30). Fighting Brain Disease. ASU - Ask A Biologist. Retrieved November 29, 2023 from https://askabiologist.asu.edu/explore/brain-diseases
Christopher Albin-Brooks. "Fighting Brain Disease". ASU - Ask A Biologist. 30 November, 2022. https://askabiologist.asu.edu/explore/brain-diseases
Christopher Albin-Brooks. "Fighting Brain Disease". ASU - Ask A Biologist. 30 Nov 2022. ASU - Ask A Biologist, Web. 29 Nov 2023. https://askabiologist.asu.edu/explore/brain-diseases