Dogs have been our companions for centuries and now theyre helping scientists study the risk factors of cancer in humans A Purdue University study shows that smokeexposed Scottish Terriers face a sixfold increase in bladder cancer risk as Indiana Public Media reports
Under the leadership of Deborah Knapp a veterinary oncologist the study aimed to identify vulnerability factors for canine bladder cancer Their study focuses on dogs because they share living spaces with humans offering crucial insights into shared environmental risk factors
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Scottish Terriers studied for three years
The team of scientists spent three years monitoring 120 Scottish Terriers under the age of six Owners of these dogs answered a set of questions every six months through a questionnaire
As per Earthcom Knapp mentions after studying dogs for years her team analyzed the difference between dogs who got cancer and dogs who didnt They aimed to pinpoint the distinctive risk factors involved
The researchers chose the Scottish Terrier because bladder cancer is notably prevalent among this dog breed In fact they have a 20 times higher chance of developing bladder cancer than any other breed
Knapp explained We know that Scotties genetics play a huge role in making them vulnerable to cancer Therefore this pronounced genetic influence aids researchers in identifying additional factors affecting the risk of cancer in both dogs and humans
She mentioned conducting similar research with mixedbreed dogs would demand hundreds of dogs to reveal a similar risk Moreover it would be more difficult to discern because those dogs are not already genetically inclined to get bladder cancer
Cotinine testing links smoking to bladder cancer
Alongside medical checkups the dogs underwent testing for cotinine a nicotine byproduct to find smoke exposure Of the 32 dogs found with bladder cancer 18 tested positive for cotinine in their urine
Interestingly certain Scotties had cotinine in their urine despite their owners not being smokers Scientists speculate this might originate from outdoor sources or thirdhand exposure For instance dogs can breathe in smoke particles adhering to clothing
Knapp stated If someone goes out to a smoky concert or party then comes home and their dog hops up on their lap to snuggle with them the dog can be exposed to the particulate material in smoke through the persons clothing
Additional factors included bladder infections in the past and living close to a marsh or wetland The research team believed that insecticide spraying or the buildup of pollutants in the area might be the reason for this environmental factor
The research findings could have broad application across various dog breeds Consequently it could help pet parents keep their environments safe and healthy for their furry friends
Furthermore this study provides an important way to look at what causes cancer in humans especially since smoking is a significant factor in human bladder cancer
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