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:10/31/2014)... 31, 2014 At the start of ... narrowly escaping carbon monoxide poisoning in their homes. Now, ... away, one family-owned, Missouri-based heating and cooling company is ... sure families start the home heating season with the ... , Beginning Nov. 1, 2014, E and Q ...
(Date:10/31/2014)... UT (PRWEB) October 31, 2014 ... new Activz Silver line offering natural silver ... wipes. For over a century, silver has been used ... in Activz Silver products is the most advanced version ... has a unique chemical structure that supports the existing ...
(Date:10/31/2014)... 2014 (HealthDay News) -- Surgery for low back pain ... the United States you live, a new report says. ... back pain at some point in their lives, and ... care for a spine problem," co-author Brook Martin, of ... said in a college news release. In spinal ...
(Date:10/31/2014)... News) -- Obesity increases the risk of certain types ... two new U.S. studies show. One study of ... obese increased the risk for estrogen receptor-negative and progesterone ... this for a long time for white women, but ... study author Esther John, a senior research scientist at ...
(Date:10/31/2014)... insomnia is a major contributor to deaths caused by ... results underscore the importance of the "Sleep Well, Be ... , Results show that the risk of unintentional fatal ... of insomnia symptoms present. People with all three symptoms ... from a fatal injury than those with no insomnia ...
Breaking Medicine News(10 mins):Health News:Many Homeowners Missing Key Safety Risks with Home Heating;Missouri-based Company E and Q Announces New Safety Check 2Health News:Many Homeowners Missing Key Safety Risks with Home Heating;Missouri-based Company E and Q Announces New Safety Check 3Health News:New Collection of Nano-particle Natural Silver Products by Activz Whole-Food Nutrition 2Health News:New Collection of Nano-particle Natural Silver Products by Activz Whole-Food Nutrition 3Health News:New Collection of Nano-particle Natural Silver Products by Activz Whole-Food Nutrition 4Health News:Spinal Surgery Varies by Region in U.S.: Study 2Health News:Study Confirms Obesity-Breast Cancer Link for Blacks, Hispanics 2Health News:Insomnia increases risk of motor vehicle deaths, other fatal injuries 2
(Date:10/31/2014)... Oramed Pharmaceuticals Inc. (NASDAQCM: ... on the development of oral drug delivery systems, ... call to discuss the clinical results from its ... proprietary oral insulin capsules, to treat type 1 ... a.m. Eastern time. Shareholders and other ...
(Date:10/31/2014)... announces the list of stocks featured in the Analyst Blog. Every ... events impacting stocks and the financial markets. Stocks recently featured in ... Report ), Celgene (Nasdaq: CELG - Free Report ... ), Market Vectors Biotech ETF (AMEX: BBH - ... XBI - Free Report ). Today, Zacks is ...
(Date:10/31/2014)... , October 31, 2014 Multigate Medical ... patents of B. Braun Melsungen AG (B. Braun) by selling ... safety IV catheters manufactured by Poly Medicure Ltd (Polymed). The ... proceeding number VID 463 of 2013 can be ... detailed judgment, Multigate was found to have infringed claim 1 ...
Breaking Medicine Technology:Oramed to Report Key Top Line Results from U.S. Phase IIa Trial with Oral Insulin in Type 1 Diabetes 2Oramed to Report Key Top Line Results from U.S. Phase IIa Trial with Oral Insulin in Type 1 Diabetes 3The Zacks Analyst Blog Highlights: Amgen, Celgene, Biogen Idec, Market Vectors Biotech ETF and SPDR S&P Biotech ETF 2The Zacks Analyst Blog Highlights: Amgen, Celgene, Biogen Idec, Market Vectors Biotech ETF and SPDR S&P Biotech ETF 3The Zacks Analyst Blog Highlights: Amgen, Celgene, Biogen Idec, Market Vectors Biotech ETF and SPDR S&P Biotech ETF 4The Zacks Analyst Blog Highlights: Amgen, Celgene, Biogen Idec, Market Vectors Biotech ETF and SPDR S&P Biotech ETF 5The Zacks Analyst Blog Highlights: Amgen, Celgene, Biogen Idec, Market Vectors Biotech ETF and SPDR S&P Biotech ETF 6The Zacks Analyst Blog Highlights: Amgen, Celgene, Biogen Idec, Market Vectors Biotech ETF and SPDR S&P Biotech ETF 7B. Braun Wins Patent Disputes Against Poly Medicure Ltd's Australian Distributor Multigate Medical Devices Pty. Ltd. and Spanish Distributor Dextromédica S. L. 2
Cached News: