HOME >> MEDICINE >> NEWS
Immune system in hamsters bolstered during winter, especially in times of stress, study finds

has shown that long-term, chronic stress can suppress the immune system. This short-term enhancement is stronger during winter than during summer. Staci Bilbo, a doctoral student in psychology at The Johns Hopkins University, was the other lead author on the study. Bilbo is currently working in the lab of Randy Nelson, another co-author and professor of psychology and neuroscience at Ohio State.

The study involved 50 Siberian hamsters. Using artificial light, the researchers exposed half of them to long days (15 hours of light per day) to simulate summer conditions. The other half lived in short days (9 hours of light per day) to simulate winter conditions.

After 10 weeks of living under these conditions, some hamsters were tested for levels of key immune cells in their bloodstream, including leukocytes, lymphocytes, T cells and NK cells.

The results showed that hamsters living in winter-like conditions have higher baseline levels of these immune cells than do hamsters living in summer-like daylight conditions.

"It is more difficult for hamsters to survive in the winter because of stressors like cold and reduced availability of food," Bilbo said. "We found that the animals seem to use the length of day to warn of the onset of these stressors and then to enhance their immune system when winter approaches."


'"/>

Contact: Firdaus Dhabhar
Dhabhar.1@osu.edu
614-688-8562
Ohio State University
18-Mar-2002


Page: 1 2 3 4

Related medicine news :

1. Immune therapy appears to reduce risk of second attack of multiple sclerosis symptoms
2. Immune cells may play important role in progression of type 1 diabetes, Joslin researchers find
3. Immune memory from smallpox vaccination lasts more 50 years, according to Emory research
4. Immune alarm system can both amplify and silence alerts, scientists find
5. Immune response to Alzheimer diseaserelated protein changes as we age
6. Immune system supressor drug found effective in treating precancerous blood disorder
7. Immune system protein may be critical in kidney disorders and other diseases
8. Immune system cells surprisingly high in HIV-infected adolescents, says researcher at the Childrens Hospital of Philadelphia
9. Immune system responds greater to uncontrollable stresses
10. Immune system rebounds for some children with AIDS, finds UF study
11. Immunex Files Supplemental NDA for NOVANTRONE

Post Your Comments:
(Date:4/23/2014)... "simple and accessible detection methods that can rapidly ... of a single cell inside that population has ... Chang Lu. , In the Royal Society of ... announced that he and his coworkers have developed ... of a protein ( Chem. Sci. , 2014, ...
(Date:4/23/2014)... are often displayed in the popular Swedish children,s ... of high-sugar foods. A new study from the ... in children,s TV programmes as well as the ... and weight status. , Steingerdur Olafsdottir,s doctoral thesis ... popular Swedish children,s TV show Bolibompa. Healthy foods ...
(Date:4/23/2014)... led by a researcher from the Cancer Science Institute ... Singapore has identified the cancer specific stem cell which ... of developing new drugs for the treatment of this ... group, led by Dr Chan Shing Leng, Research Assistant ... that a cancer-specific variant of a cell surface protein, ...
(Date:4/23/2014)... in the journal Oncotarget , explored tumour ... or their own DNA signatures within the same ... design effective, targeted treatment strategies. , Firstly they ... and either the KRAS or BRAF mutation. Secondly, ... EGFR gene mutation have that specific mutation present ...
(Date:4/23/2014)... Alzheimer,s disease has been a rapidly evolving pursuit ... latest crook in the research road, scientists have ... proteins associated with the disease. The report, which ... , could have important implications for developing novel ... colleagues explain that for years, research has suggested ...
Breaking Medicine News(10 mins):Health News:Following a protein's travel inside cells is key to improving patient monitoring, drug development 2Health News:High-calorie and low-nutrient foods in kids' TV 2Health News:Scientists identify cancer specific cell for potential treatment of gastric cancer 2Health News:Scientists identify cancer specific cell for potential treatment of gastric cancer 3Health News:Non-uniform genetic mutations identified in lung cancers could lead to targeted treatment 2
(Date:1/15/2014)... , Jan. 15, 2014 Reportlinker.com announces ... available in its catalogue: ... Forecast and Market Analysis to 2022 ... Atopic Dermatitis - India Drug Forecast and ...
(Date:1/15/2014)... , Jan. 15, 2014  Zafgen, Inc., a ... needs of severely obese patients, today announced initial ... a selective inhibitor of methionine aminopeptidase 2 (MetAP2), ... form of genetic obesity.  These results showed improvements ...
(Date:1/14/2014)... InformEx, North America,s leading business partnering ... the 30 th edition of its annual conference at ... January 21-24. (Logo: http://photos.prnewswire.com/prnh/20131028/NY05330LOGO-a ) ... and specialty chemical companies will take part in the conference, ...
Breaking Medicine Technology:PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 2PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 3PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 4PharmaPoint: Atopic Dermatitis - India Drug Forecast and Market Analysis to 2022 5Zafgen Announces Initial Results from Phase 2a Study of Beloranib in Patients with Prader-Willi Syndrome 2Zafgen Announces Initial Results from Phase 2a Study of Beloranib in Patients with Prader-Willi Syndrome 3Zafgen Announces Initial Results from Phase 2a Study of Beloranib in Patients with Prader-Willi Syndrome 4Media Advisory: InformEx 2014 Events & Speaker Lineup for 30th Edition Conference in Miami Beach 2
Cached News: