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Hormone Oxytocin In Dogs, Is Responsible for Sensitivity which Makes them Man’s Best Friend

Dog-Human relation as we know is far different from other animals, A new study speaks what's the reason behind their friendly and loving nature toward humans.

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Dog's hormone oxytocin sensitivity study. Pixabay
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London, September 20, 2017: Ever wondered why some dogs are so friendly with their owners? It’s because of an association with genetic variations in sensitivity for the hormone Oxytocin, reveals a new study.

Since their domestication from their wild ancestor the wolf to the pets we have today, dogs have developed a unique ability to work together with humans.

One aspect of this is their willingness to “ask for help” when faced with a problem that seems to be too difficult.

However, there are large differences in the willingness to ask for help and to collaborate with humans, between breeds and between dogs of the same breed, according to the researchers.

This ability is associated with variations in sensitivity for the hormone oxytocin — known to play a role in social relationships between individuals.

The effect of oxytocin depends on the function of the structure that it binds to, the receptor, in the cell, the researchers said.

“Oxytocin is extremely important in the social interactions between people. And we also have similar variations in genes in this hormone system,” said Per Jensen, Professor at the Linkoping University, Sweden.

“Studying dog behaviour can help us understand ourselves, and may in the long term contribute to knowledge about various disturbances in social functioning,” Jensen added.

ALSO READ: Dogs can recognize human emotions: Research

For the study, published in the journal Hormones and Behavior, the team examined 60 golden retrievers whose levels of oxytocin in the blood was increased by spraying the hormone into their nose.

The results showed that some dogs with a particular genetic variant are more sensitive to the hormone oxytocin, making them more likely to seek help from their owners.

These results help us understand how dogs have changed during the process of domestication.

Analysing DNA from 21 wolves, the researchers found the same genetic variation among them.

This suggests that the genetic variation was already present when domestication of the dogs started 15,000 years ago.

(IANS)

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Growth Hormone Deficiency May Also Hit Healthy Children

Since he started getting these injections two years ago, Spencer has grown about 15 centimeters.

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FILE - UNICEF staff measure a girl's height to see if she is stunted in a village health clinic of South Hamgyong province, North Korea. VOA

Most healthy children between the ages of four and 10 grow about five centimeters (two inches) a year. So, one family knew something was wrong when their son fit into the same clothes, season after season. Doctors were able to get him growing once again after testing for a growth hormone.

Eleven year-old Spencer Baehman is passionate about baseball.

“My goal is to play college baseball,” Spencer said.

There was only one problem. Spencer was the shortest player on his team. It didn’t stop him from playing, but the height difference was noticeable. And it made Spencer feel different.

“I want to be as tall as these kids,” Spencer said.

At first, Spencer’s parents thought their son was just small, but gradually, they suspected something was wrong. His mom, Stephanie Baehman, became worried.

“It really set in one year coming out of winter into spring when he got out his cleats for spring baseball and he put them on, and they fit. And they never should have fit. Those were from the spring prior,” Baehman said.

Spencer’s parents set up an appointment with Dr. Bert Bachrach, the chief of pediatric endocrinology at University of Missouri Health Care. Nurses measured Spencer’s height.

After careful testing, Dr. Bachrach determined a growth hormone deficiency was causing Spencer’s growth failure. Hormones are basically chemicals that send messages from one cell to another.

“Growth hormone just doesn’t affect your growth, it affects your muscle mass and fat distribution, so that affects your cholesterol, that affects you overall, it also affects your overall sense of wellbeing,” Bachrach said.

Young Kids learning
Young Kids learning. pixabay

Growth hormone insufficiency is a disorder involving the pituitary gland which is a small, pea-sized gland located at the base of the brain. It’s this gland that produces human growth hormone, among others.

Also Read: Poor Aerobic Fitness Increases Risk of Diabetes in Kids

Every day, Spencer’s mother gives him a daily hormone injection. Since he started getting these injections two years ago, Spencer has grown about 15 centimeters (six inches). But just in case he doesn’t grow tall, he has a reminder written in each of his baseball caps.

“It says HDMH, which means height doesn’t measure heart,” Spencer read.

And heart is something Spencer has plenty of. (VOA)