Navigation Links
Artificial Light Stimulates Breast Cancer Growth In Mice: Study

Researchers at the Bassett Research Institute of the Mary Imogene Bassett Hospital in Cooperstown, New York and The Thomas Jefferson University in Philadelphia, Pa have found that the growth of breast cancer in laboratory mice was // stimulated by the nighttime exposure to artificial light. The study, which was funded by the National Cancer Institute and the National Institute of Environmental Health Sciences, also found that the tumors were stimulated by the suppression of a hormone called as melatonin. The development of breast tumors was slowed down by nighttime darkness.

This study could offer an explanation as to why the rate of breast cancer is high in female workers who work night shifts. The complete details of the study are published in the December 1, 2005 issue of the journal Cancer Research. "This is the first experimental evidence that artificial light plays an integral role in the growth of human breast cancer," said David A. Schwartz, M.D, NIEHS Director "This finding will enable scientists to develop new strategies for evaluating the effects of light and other environmental factors on cancer growth." Previous research had already highlighted the role of melatonin in the sleep and waking cycles. Now this research shows that melatonin has a role to play in the growth of cancer as well. "Melatonin interferes with the tumor's ability to use linoleic acid as a growth signal, which causes tumor metabolism and growth activity to shut down," says David Blask, M.D., Ph.D., a neuroendocrinologist with the Bassett Research Institute and lead author on the study. The researchers first injected human breast cancer cells into laboratory mice and then after tumors developed, they injected tumor-free, melatonin-rich blood into these mice. It was found that melatonin slowed the growth of these tumors. "We observed rapid growth comparable to that seen with administration of daytime blood samples, when tumor activity is particularly high," Blask said."Comp anies that employ shift workers could introduce lighting that allows the workers to see without disrupting their circadian and melatonin rhythms." Contact: John Peterson peterso4@niehs.nih.gov 919-541-7860 NIH/National Institute of Environmental Health Sciences
'"/>




Related medicine news :

1. Fifth US Patient Receives Artificial Heart
2. First Artificial Heart patient has Major setback
3. Artificial lenses- Boon to cataract patients
4. Artificial silicon retina
5. Artificial disc looks hopeful
6. Artificial discs available as replacements for damaged discs
7. Artificially made protein to inhibit angiogenesis
8. Artificial Heart , Gives Hope For Patients Awaiting a Heart Transplant
9. Artificial Sweetners Not Really Safe?
10. Aspartame, Artificial Sweetener, A Safe Bet!
11. Artificial sweetener, Aspartame, may be the potential cause of lymphoma, leukaemia
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/28/2017)... ... April 28, 2017 , ... ... the integration of Microsoft(R) Word(TM) Online(TM), which enables sleep physicians to create and ... streamlines the reporting process and provides a familiar interface that does not require ...
(Date:4/28/2017)... Pass, OR (PRWEB) , ... April 28, 2017 ... ... Ijose, http://www.foodsthathealdaily.com , http://www.wiredlifesolutions.com , “Computers are everywhere and they’re ... Hour Power of Water, Global Climate Change and Your Health on Voice America ...
(Date:4/28/2017)... ... April 28, 2017 , ... The Texas Cord Blood ... to the labor and delivery team at Women’s Hospital at Renaissance in Edinburg for ... birth at the hospital and decide to donate. , “Women’s Hospital at Renaissance ...
(Date:4/28/2017)... ... , ... Yisrayl Hawkins, Pastor and Overseer at The House of Yahweh in Abilene, Texas, has ... which He does not. Yisrayl says with so many titles and names for the ... he says with a little Scripture, backed with a lot of research, the truth is ...
(Date:4/28/2017)... ... , ... NuevaCare, a leading home care agency based in San Mateo, California, ... proud to announce information upgrades to its blog in the form of WordPress tags. ... such as home care (generally) as well as senior care and home care agency ...
Breaking Medicine News(10 mins):
(Date:4/19/2017)... , April 19, 2017  Novartis today ... the National Heart, Lung, and Blood Institute (NHLBI) ... that 58% of patients with treatment-naïve severe aplastic ... when treated with eltrombopag at the initiation of ... The study evaluated three sequential treatment groups, or ...
(Date:4/18/2017)... DUBLIN, Ohio , April 18, 2017  Cardinal ... its Non-GAAP 1 fiscal 2017 earnings per share ... 2018 and 2019.  This is in conjunction with this ... Care, Deep Vein Thrombosis and Nutritional Insufficiency businesses. ... EPS from continuing operations will be at the bottom ...
(Date:4/18/2017)... Viverae ® , a leader in workplace ... IBM ® Watson Campaign Automation, implementing behavioral messaging ... a personalized experience. Through digital engagement, the platform prompts ... real time. The enhanced experience drives engagement by focusing ... they are in their journey to health. ...
Breaking Medicine Technology: