Study Links Cancerous Tumors With Depression
...ats with tumors had dampened production of the stress hormone corticosterone, which helps regulate the impact of cytokines. Reducing the production of corticosterone
may increase the impact of cytokines.
"Our research shows that two types of tumor-induced molecules, one secreted by the immune system and another ...
Easing the stress of trauma
...r the stress event, reduces the effect of trauma in mice. They believe that corticosterone
may dampen an animal's ability to "remember" the initial trauma time and ti...orrelated to acute stress reaction in humans. Mice that were given shots of corticosterone
shortly after their exposure were significantly less "tense" when reminded ...
Exercise Keeps the Brain Young
...er, moderate running increased the concentrations of brain-derived neuron growth factor and its receptor, TrkB, in the hippocampus, while the level of corticosterone
in mice stayed constant, Kuo said.
"The production of neural stem cells in the hippocampus decreases dramatically by middle age, and moderate runni...
Large hormone dose may reduce risk of post-traumatic stress disorder
...n of the Anxiety and Stress Research Unit at the Faculty of Health Sciences, Ben-Gurion University of the Negev, "A single intervention with high-dose corticosterone
immediately after exposure to a psychogenic stressor was highly effective in reducing the incidence of PTSD-like behaviors and improved the resilience...
Study suggests why heart attack victims do better with social support
...t in this case it is too much of a good thing," he said.
In addition, results showed that the isolated mice had higher levels of the stress hormone corticosterone
following the heart attack. Other studies have linked elevated levels of this hormone to increased neuronal damage.
"We found that the hormonal str...
Stress hormone impacts memory, learning in diabetic rodents
...f the hippocampus, the region of the brain responsible for learning and short-term memory. Moreover, when levels of the adrenal glucocorticoid hormone corticosterone
(also known as cortisol in humans) are returned to normal, the hippocampus recovers its ability to build new cells and regains the plasticity needed t...
Genes, brain chemistry may dictate nicotine cravings, says CU-Boulder study
...daytime effects of nicotine were greatest when levels of the stress hormone corticosterone
The second finding could explain why many smokers report that...ltering the effects of nicotine, and whether the correlation between higher corticosterone
levels and nicotine sensitivity is a coincidence.
Stress Protein Inactivation Cuts Alzheimer's Peptide in Mice
...easing the levels," he added.
Initially, the researchers suspected corticosterone
molecules, the mouse equivalent of the human stress hormone cortisol, to be...rapid change in the levels of amyloid. But upon seeing that a large dose of corticosterone
didn't cause a similar rapid change in amyloid beta levels, they began sear...
A New Approach to Manage Opiate Addiction
...ehavioral withdrawal symptoms in mice, and that giving the mice the hormone corticosterone
alleviates those symptoms.
Angelo Contarino of Université Victor Segale...er, Contarino and colleagues found that giving the mice the steroid hormone corticosterone
abolished the difference in withdrawal symptoms between the CRF1-deficient ...
Pre-Clinical Study Suggests How Steroid Can Reverse Post-Traumatic Stress
...or post-traumatic stress disorder in humans. But mice receiving the hormone corticosterone
at the time they “relived” the event experienced a significant drop in that...he dosage of the hormone given.
In order for the effect to work, the corticosterone
had to be given after the mice were returned to the site of the initial tra...
Corticosterone in Biological News
Short stressful events may improve working memory
...d memory, through the effect of the stress hormone corticosterone
(cortisol in humans) on the brain's prefrontal cor...to the non-stressed rats.
To determine if the corticosterone
neuropathway was responsible for the improved memo...Results showed that the saline group, in which the corticosterone
neuropathway was not blocked, performed better in ...
Mothers pass on disease clues to offspring
...ce that had given birth) were found to have increased blood serum levels of corticosterone
after being housed next to the infected males double the amount found in dams housed next to a control group of males that were not infected. corticosterone
is a stress hormone known to have effects on foetal and new-born developmen...
Exercise increases brain growth factor and receptors, prevents stem cell drop in middle age
...by The American Physiological Society.
Rise in corticosterone
or fall in nerve growth factor?
The researcher...lated decline in neurogenesis is tied to a rise in corticosterone
in middle age. Elevation of corticosterone
has been associated with a drop in the production ...
Exposing chicks to maternal stress leads to long-term reproductive success
... exposure to the maternally-derived stress hormone corticosterone
affect maternal fitness in free-living European st....
They experimentally increased yolk levels of corticosterone
to mimic the "signal" offspring receive indicating...-term from exposing offspring to their own stress: corticosterone
exposure better "matches" offspring demand to a mo...
Human hormone blocker found to help prevent obesity and diabetes: study
... 5-7 day intervals.
Blood was taken on day 50 to measure cholesterol, triglycerides, glucagon (the hormone involved in metabolizing carbohydrate), corticosterone
(involved with carbohydrates in the liver) and circulating adipokines (which play a key role in obesity-related diseases). Glucose tolerance and insul...
Mice stressed in simulated weightlessness show organ atrophy
...anation at this time. The next phase of our research will ask what exactly is going on.
The stressed normal mice also displayed elevated levels of corticosterone
a hormone known to induce apoptosis (programmed cell death), a process evident in the spleen and thymus of these mice and a possible mechanism underl...
Chronic jet-lag conditions hasten death in aged mice
...dvancers" did more poorly in the present experiment than did "delayers."
Notably, the researchers found that chronic stress--as measured by daily corticosterone
levels--did not increase in the old mice experiencing the light-cycle shifts. The underlying cause of the increased mortality is not yet clear, but co...
Too mellow for our predatory world
...lanck Institute for Ornithology, the University of Ulm Tufts University and Princeton University were able to show that the stress response induced by corticosterone
(CORT) is absent in predator-naÃ¯ve animals but can be fully restored with experience. However, as the researchers found out, the flight distance of t...
Penguin chicks exposed to human visitors experience spike in stress hormone
...e such as adrenaline, it takes several minutes for corticosterone
to build up in the bloodstream after a stressful e...ne of the chicks demonstrated an elevated baseline corticosterone
level. But 30 minutes and 60 minutes after capture...ces at fledging, caused by distinct differences in corticosterone
levels between newly hatched chicks in tourist and...
Corticosterone in Biological Products
Corticosterone EIA Kit from IDS Ltd
Description:... The IDS corticosterone
kit is a competitive enzymeimmunoassay (EIA) for the quantitative determination of corticosterone
in mouse or rat serum or plasma. corticosterone
is the major, if not sole, corticosteroid in rats ...