Showing posts with label Homeostasis. Show all posts
Showing posts with label Homeostasis. Show all posts

December 01, 2012

How the Brain Stays Stable in a Changing World: Graeme Davis

The human brain is the most complex structure in the body. It consists of about 100 billion neurons that make around 100 trillion synapses. These connections are constantly changing and the brain must maintain a stable level of electrical activity as it changes. If this balance is disrupted, conditions like epilepsy and schizophrenia can arise. How neurons achieve this feat is still a scientific mystery.

Our guest this month is Dr. Graeme Davis, professor in the department of biophysics at UC San Francisco. Dr. Davis hopes to solve the question of how the brain remains stable as it changes. His lab uses fly genetics to determine important genes involved in maintaining stable neural activity. Listen as Dr. Davis describes how one of these genes, dysbindin, is involved in stabilizing neural function and may have important implications in schizophrenia.

More on the Davis Lab's research.

Hosted by Sama Ahmed

October 31, 2012

Energy balance in a changing environment: Kaveh Ashrafi

The ability to maintain energy balance in a changing environment is essential for survival. The brain helps maintain this balance by sending signals that regulate food intake as well as fat storage. Abnormal metabolism has been associated with cardiovascular disease, type II diabetes, and even some neurodegenerative disease. However, the biology behind this link is not completely understood.

Our guest this month, Dr. Kaveh Ashrafi, an associate professor in the department of physiology at UCSF, hopes to tackle this important question. His lab uses microscopic nematodes to understand the genes and neural circuits that control fat and feeding regulation. By taking advantage of the simplicity of the nematode nervous system, scientists in Dr. Ashrafi’s lab can determine the precise role of these genes and how they control feeding behavior. His lab also studies how different chemicals in the environment can regulate metabolism and increase fat levels.

More on the Ashrafi Lab's research

Hosted by Karuna Meda