Central control of stress-induced changes in immune function. [ 2001 - 2003 ]

Research Grant

Researchers: Dr Kathryn Buller (Principal investigator) ,  Prof Trevor Day

Brief description LONG-TERM STRESS CAN ALTER OUR BRAIN'S ATTEMPTS TO FIGHT INFECTION Long-term stress is often blamed for causing illness but precisely how this occurs is now only beginning to be realised. It is especially disturbing that long-term stress can increase one's susceptibility to infections. Stress can alter the way our brain can help deal with assaults by bacteria and viruses. Normally, at the start of an infection, we release a hormone called cortisol from our adrenal glands. A low level of cortisol in our body is beneficial because it can prevent the infection from taking hold in our body and spreading. However if we are chronically stressed our brains tell the adrenal glands to secrete excessive amounts of cortisol over long periods of time and this imbalance can actually hinder the ability of one's immune system to fight an infection. The unfortunate consequence is that the infection is more likely to win the battle and spread to cause further havoc. The present study will identify which areas of the brain are important in driving the secretion of cortisol during infection and how long-term stress can influence those areas. Because we might be exposed to long-term psychological stress that is repeated regularly or irregularly we will determine which pattern of stress has the greatest effect. An investigation into how the brain operates during long-term stress and infection will help us develop ways to prevent stress from disrupting our immune systems.

Funding Amount $AUD 411,724.12

Funding Scheme NHMRC Project Grants

Notes Standard Project Grant