NatGeo :: Mystery Solved: Why We Sunburn

 

 

via National Geographic

Mystery Solved: Why We Sunburn.

 

 

Though the culprit of sunburn is obviously sun exposure, researchers have gotten down to a chemical level in order to explain the event. When killed by ultraviolet light, a certain type of RNA in a cell breaks down. This sends out a message to surrounding cells that results in inflammation in healthy skin around the dead cell. The RNA responsible for sunburn is a noncoding RNA, meaning it controls how our genes work as opposed to holding genetic information.

 

As much as we dislike sunburn, the inflammation may actually help as it allows our skin to heal after ridding itself of the dead cells. The researchers also theorize that the inflammation may also help to kill cells with genetic damage lessening the chance of them becoming cancerous. The findings of this study may aid in the development of inflammation blockers which would go a long way in the treatment of autoimmune diseases.

 

 

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Entropion

At the vet hospital, we’ve had the sweetest little female bulldog come in a few times in the last month. The first time I saw her, she had a fever in the area of 105˚ so we had to wet her down, set her on an ice pack and wonder why the heck she got so hot. (The average temperature for a dog is around 102.5˚F.) The next time, I restrained her while she had some sutures put in (while she was still awake) to try to deal with swelling around her eye. Earlier this week, she was in for entropion surgery.

An entropion is a condition in which the eyelid rolls inward.

via Google search

Flat faced dogs, like pugs, are susceptible to this sort of eye deformity. The hair on the rolled in eyelid can damage the eye by rubbing against it causing erosion or ulcers which may lead to scarring. The surgery required to fix this is a form of plastic surgery. Sections of the extra skin are removed to tighten the eyelid. In puppies, “lid tacking” can be performed. This is done by suturing the extra skin downward to open the eyelid. Unless the entropion is extreme, it usually won’t come back. The Shar Pei tends to be a breed in which the condition will return. The condition can be passed on to offspring to animals with entropions should not be bred.

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Sources:

  1. http://animaleyecare.net/diseases/canine.htm