Dogs who sniff out cancerous cells
Video source: Channel 4 News
Dogs ... protector, helper, friend, confidant, hero and friend of humans for nearly 12 thousand years... The bond between dogs and humans is so strong that dogs feel uncomfortable and uneasy about certain things, and sometimes even sick, much earlier than they do. Dogs that meet many human needs physically and emotionally are now contributing to successful scientific studies. How? Trained dogs that can track, help hunters, find drugs, explosives and missing persons thanks to their advanced sense of smell are now able to identify some cancers, infections and other diseases before they have any clinical symptoms.
Although there are differences between breeds, dogs ' sense of smell is highly developed. Some breeds, such as the German Wolf, have a better sense of smell than other breeds, and with special training they can be used in such jobs as finding drugs, removing survivors from the dent. The sense of smell in dogs is 10,000-100,000 times better than in humans. They use a large part of their brain to make that sense work. Humans have about five million olfactory cells in their noses, while dogs have up to 200 million. While the width of the olfactory region in the human nose is 5 centimetres, this area is known to be 150 centimetres in dogs.
The smell of lung cancer, such as the skin, stomach, esophagus, bowel, urinary tract, kidney, uterus and prostate cancers that open to the outside can be diagnosed by dogs, it is said. All types of cancer emit different odors than normal cells. Whether this scent opens up to the outside has been debated for a long time among scientists. There are also advocates that such cases can be diagnosed by trained animals in general.
Another view is that the detection of cancer on a human being by a dog that has not been identified by smell before is due to chance. According to this view, the first such cancer diagnosis was determined by such a coincidence in 1988. When a dog reacted abnormally to different stains on its human companion, the woman went to the doctor and found out she had skin cancer.
Scientists have included dogs ' noses in many medical studies over the past 10 years. According to experts, some diseases and infections emit special scents that dogs can easily pick up, namely bio-marketers. These odors do not form in healthy tissues. Malignant tumors and cancerous cells, for example, give the outside the smell of some organic volatile chemicals. Dogs can easily smell it.
Experts point out that the dog's nose is 10 thousand times more sensitive than medical devices that detect the odor molecule. Dogs can easily sense bladder, kidney, bowel cancer, as well as types of cancer that emit odors through urine and feces thanks to their enhanced sense of smell. In addition, they can detect skin and breast cancer by sniffing people's skin, and lung cancer by sniffing their breath. In centres in the UK, Korea, Japan, Germany and the US, there is widespread detection of cancer by leveraging the dogs ' extraordinary olfactory abilities. In Turkey, it is stated that such studies were started at the Faculty of Veterinary Medicine of Istanbul University.
Trained dogs have the ability to detect cancer and bacterial infections, as well as changes in blood sugar levels and by sniffing out organic ketones. Ketones are known as toxic acids that signal low insulin and high blood sugar in the bloodstream. The dogs that notice this condition inform their owners that they are about to go into a sugar seizure or a sugar coma. Some dogs are also trained to focus on changes in their behaviour, not on their owners ' breaths or the smells they secrete. In this way, they feel high blood pressure, heart or epilepsy attacks before they start and warn their owners early. Dogs that are friendly to humans are certain to play an important role in early diagnosis of many diseases in the near future.
Experts inspired by these results have started to look for some practical and technological solutions that can be used to diagnose cancer or other diseases. As a result of this, the human nose or medical devices can not feel or detect odors that can detect, so-called “electronic nose” devices have been developed. These devices analyze breath samples. If cancer is present, the markers used in these devices can detect the disease by changing color.
The studies are promising. From now on, watch your dog more carefully. Your dog can give you tips for a healthier and happier life. If your dog is behaving strangely to you, for example, constantly sniffing, clawing, licking or biting certain parts of your body, perhaps there is something about your health that even you are unaware of and that is not going well.
The Italian army began to use the dogs it raised for protection to fight cancer
Researchers say dogs are bred to sniff out prostate cancer cells. Experts said that important developments have been made in the trainings so far.
Trained dogs are taken into the same room as patients. If the dogs sense a cancer cell smell, they sit next to the patients. If he doesn't find any trace, he leaves the room.
Experts said the share of dogs being mistaken in Tests so far has been very low.
Giario Conti, Department of Oncology at St Anna hospital: "we have to wait for the next phase. We're currently working on how to decompose the molecules that make up the disease."
Researchers have been working on the fight against cancer and early diagnosis of other diseases at the Military Veterinary Center in Tuscany since 2002.
After 3 years of training to be carried out by the Hull and East Yorkshire Hospitals Foundation in England, it was announced that the dogs would be used to diagnose bowel cancer
Dogs will be trained to detect bowel cancer as part of a medical trial, researchers have announced.
During the three-year trial, which will take place at Hull and East Yorkshire Hospitals Foundation, the dogs will sniff urine samples belonging to over 2,000 healthy and sick individuals throughout their training.
Experts have commented that dogs have a famously acute sense of smell and can detect traces of smell created by diseases.
According to Medical Detection Dogs, " Dogs can take small concentrations of odors around one part per trillion. It is worth reminding that this is equivalent to two Olympic pools of sugar as much as a teaspoon," he said.
It Can Reduce The Need For Colonoscopy In Cancer Diagnosis!
The comments about the topic in colorectal surgery consultant Ian Hunter, "such as a urine test, which is more accurate and less intrusive to find new ways of bowel cancer screening, colonoscopy normal patients who can reduce the number of unnecessary and effective way to scan and located, may increase the number of people," he said.
The researchers hope the new method will facilitate the detection of diseases and reduce the need for detection methods that require intervention.
A previous study revealed that 93% reliability was achieved in the detection of prostate cancer in urine samples.
Dogs are reportedly able to separate blood samples from cancer patients by up to 97 per cent from others!
A study conducted in the US found that dogs are able to detect cancer in a blood sample with about 97 per cent accuracy thanks to their sense of smell.
The study, presented at the annual meeting of the U.S. Society of Biochemistry and Molecular Biology in Orlando, Florida, said dogs trained to detect cancer were 96.7 percent able to detect the smell of the blood of a cancer patient.
Three of the 4 beagle dogs trained to separate blood from healthy people and lung cancer patients with a special method were 96.7 percent successful in detecting cancer samples and 97.5 percent in detecting healthy samples.
Heather Junqueira, leader of the team that led the research at health care company Bioscentdx, said a sensitive test to detect cancer could save thousands of lives, adding that such a method could change the way the disease is treated.
The goal is to develop a new method of screening for cancer, thanks to dog-specific olfaction. It also says that dogs can detect which biological components smell and search for those components in cancer screening.