Does stress speed up the onset of skin cancer? The answer, in mice anyway, appears to be "yes." Scientists at the Johns Hopkins Kimmel Cancer Center say that chronic stress may speed up the process in those at high-risk for the disease. Their new study, published in the December issue of the Journal of the American Academy of Dermatology, shows that mice exposed to stressful conditions and cancer-causing UV light develop skin cancers in less than half the time it took for non-stressed mice to grow tumors.
The Hopkins investigators say that if what they are seeing in mice has relevance in man, stress-reducing programs like yoga and meditation may help those at high risk for skin cancer stay healthy longer. "Theres a lot of evidence pointing to the negative effects of chronic stress, which dampens our immune system and impacts various aspects of our health," says Francisco Tausk, M.D., associate professor of dermatology at Johns Hopkins and director of the study. "But, to help create solid treatment strategies, we need a better understanding of the mechanisms of how stressors affect skin cancer development."
Tausk exposed 40 mice to the scent of fox urine - the mouse equivalent of big-time stress - and large amounts of UV light. The first skin tumor in one of the mice appeared after eight weeks of testing. Mice exposed only to UV light began developing tumors 13 weeks later. By 21 weeks of testing, 14 of the 40 stressed mice had at least one tumor, and two non-stressed mice had tumors. Most tumors were squamous cell skin cancers, also known as non-melanoma cancers, but which have the potential to spread to other parts of the body.
Do microplastics harbour additional risks by colonization with harmful bacteria?
05.04.2018 | Leibniz-Institut für Ostseeforschung Warnemünde
Rutgers-led innovation could spur faster, cheaper, nano-based manufacturing
14.02.2018 | Rutgers University
University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
Stable joint cartilage can be produced from adult stem cells originating from bone marrow. This is made possible by inducing specific molecular processes occurring during embryonic cartilage formation, as researchers from the University and University Hospital of Basel report in the scientific journal PNAS.
Certain mesenchymal stem/stromal cells from the bone marrow of adults are considered extremely promising for skeletal tissue regeneration. These adult stem...
In the fight against cancer, scientists are developing new drugs to hit tumor cells at so far unused weak points. Such a “sore spot” is the protein complex...
13.04.2018 | Event News
12.04.2018 | Event News
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20.04.2018 | Physics and Astronomy
20.04.2018 | Interdisciplinary Research
20.04.2018 | Physics and Astronomy