Life Lines by Dr. Dolittle

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Tag Archive for ‘cancer’

Sniffing out cancer?

I just saw an interesting review article published in Physiological Reviews that discussed the presence of olfactory (i.e. smell) receptors located outside of the nose. Say what? It turns out that these “smell” receptors are not unique to our nostrils. In fact they are found throughout our bodies. Those found in the heart may be responsible for regulating heart function, those in the immune system are thought to help destroy types […]

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Study examines link between sleep apnea and cancer

A recent review published in the American Journal of Physiology – Regulatory, Integrative and Comparative Physiology explored the link between sleep apnea and cancer (4). More and more people are living with sleep apnea. In fact, current estimates indicate that up to 24% of men as well as up to 5% of women have obstructive sleep apnea (4). Individuals with sleep apnea experience repeated cycles of low oxygen (hypoxia) and reoxygenation throughout […]

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Cancer resistance in elephants explained

  Research has shown that <5% of elephants succumb to cancer. This is remarkable as elephants are massive, meaning they have more cells to replicate on a regular basis than humans. One would think having so many cells would increase the risk of these cells dividing improperly, especially considering that captive elephants can live for about 70 years. It has been known for several years that elephants have 20 copies […]

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Elephants provide clues to cancer resistance

Cancer risk is associated with how often cells divide because each time DNA replicates, potential errors may occur. Unlike most mammals, elephants are remarkably resistant to cancer given their size. In a new study published in Cell Reports, researchers explored genes that evolved more quickly in elephants than other mammals to try to identify genes responsible for this protection. They identified several accelerated gene pathways in elephants that are important for DNA repair […]

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Is your pet overweight?

A new study conducted by the Banfield Pet Hospital (Vancouver, Washington) reports that as many as 1 in 3 dogs and cats living in the United States are overweight. The study was based on data collected by Banfield veterinary clinics on 2.5 million dogs and half a million cats over the past year. Obesity in pets was not related to the weight status of their owners. In fact, overweight pets were less prevalent in states whose populations […]

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Cancer resistance developing in Tasmanian devils

Tasmanian devils are rather large carnivorous marsupials. By large, I mean the world’s largest. In only 2 decades, the population of Tasmanian devils have declined by about 85%, landing these animals on the endangered species list. The cause: an infectious cancer called devil facial tumor disease (DFTD). As the name implies, this cancer causes facial tumors that grow so large, the victims starve to death in as little as 6 […]

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Secret to safer stem cell therapy or cure for cancer?

Researchers trying to find cures for cancer find naked mole rats rather interesting. Not only are these animals long-lived by rodent standards, they are also resistant to the development of cancer. By long-lived, we are talking up to 30 years! A team of researchers from Hokkaido University and Keio University in Japan have now isolated stem cells from the skin of naked mole rats and induced them to revert back to pluripotent stem […]

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