(Dec. 14, 2011) -- Carlos Paladini, UTSA associate professor of biology, was awarded a $1.3 million, five-year grant from the National Institutes of Health to study which inputs in the brain drive dopamine cells to fire faster.
Dopamine cells release a chemical or neurotransmitter in the brain called dopamine, which drives motivated and reward-related behaviors. The loss of dopamine cells in the brain is associated with Parkinson's disease cases, and the effects of drugs of abuse on dopamine cells can lead to addiction. Paladini hopes the research results will eventually assist in helping to find therapies to cure drug addiction and treat patients with Parkinson's disease.
The researcher and his graduate students are focusing on the spikes of electrical activity associated with dopamine cells in the brain and the effects they have in driving motivated behavior. They hope to learn how dopamine cells get access to information in the brain that drives reward-related behavior.
"We want to find out what are the inputs to the dopamine cells that actually drive the cells to either increase their activity in terms of a reward or reward signal, and what are the inputs that drive the cell to decrease their activity if the reward that was expected was not received," said Paladini. "We don't know which inputs or which parts of the brain connect to dopamine cells to inform the cell and give it all the information it needs to calculate whether it should fire faster or slower."
To conduct the research, the scientists are using optical fibers to stimulate dopamine cell inputs that produce a protein that is sensitive to blue light. A virus with a gene is injected into the inputs and that gene makes the cells produce a protein that is sensitive to blue light. When the protein is shone with blue light, it activates the cell, which is similar to what occurs when a reward takes place.
"If we go to the region where the dopamine cells are and shine a blue light, only those inputs that are producing that protein will be activated," Paladini said. "We will know for certain that when we shine blue light and activate only one input, whatever effect we see in a dopamine cell is going to be due to the effect on those inputs that have that specific protein and not any other inputs that are there."
Campers in 9th grade through college will receive instruction and coaching on agility testing and position specific drills to refine and improve his skillset as a football player.
Recreational Field Complex, Main Campus
Inspired by UTSA's renowned Mexican Cookbook Collection, the evening features cuisine and spirits of celebrated chefs from San Antonio and Mexico.
Hotel Emma, 136 E. Grayson St., San Antonio
Experience a fun, interactive week at UTSA as new students and their families take the first steps to becoming a Roadrunner.
Various locations, Main Campus
Campers 6-12 years old will enjoy the summer learning to read, write and speak the Chinese language. They also will learn about the Chinese culture such as martial arts, painting and drawing, arts and crafts and more.
Confucius Institute at UTSA (MB 1.208), Main Campus
Campers 7th grade and up will focus on individual development with emphasis on simplifying and teaching the specific skills and movements associated with the game. Serving, passing, setting, attacking and individual defense will all be covered. In addition, team concepts will be emphasized.
Convocation Center, Main Campus
Celebrate Texas' diversity with authentic ethnic cuisine, music, dance, arts and crafts from the many countries that make up the rich heritage of Texas.
UTSA Institute of Texan Cultures, Hemisfair Campus
Kids from kindergarten through high school will immerse in the fields of science, technology, engineering and math through hands-on activities.
Applied Engineering and Technology (AET 0.102), Main Campus and Buena Vista Street Building (BVB 3.328), Downtown Campus
Novice and experienced boys and girls in grades 1-8 will be divided up by age and ability to gain the most skills and knowledge for their level of play.
Park West Athletics Complex
The University of Texas at San Antonio is dedicated to the advancement of knowledge through research and discovery, teaching and learning, community engagement and public service. As an institution of access and excellence, UTSA embraces multicultural traditions and serves as a center for intellectual and creative resources as well as a catalyst for socioeconomic development and the commercialization of intellectual property - for Texas, the nation and the world.
To be a premier public research university, providing access to educational excellence and preparing citizen leaders for the global environment.
We encourage an environment of dialogue and discovery, where integrity, excellence, inclusiveness, respect, collaboration and innovation are fostered.