The infant was exposed to rodent hairs and other pets, the cockroach allergen and a variety of other bacteria in place in the first years old will be less allergy, wheezing and risk of asthma, according to the results of a study conducted by researchers at the Johns Hopkins Children’s Center and other organizations announced.
Previous research has shown that children who grow up on farm have incidence of allergic and risk of asthma are lower, this phenomenon occurs due to frequent contact with the microorganisms in the soil of the farm. However, other studies have found, the risk of asthma increased in children who live in the city exposed to high concentrations of waste and of cockroach allergens and mouse.
The new study confirms that children living in that house, the incidence of asthma and allergies more common, but adds a coincidence: The children encounter allergens, such as asthma above before their first birthday seems to be better than being affected by these agents. More importantly, the protective effect of exposure to allergens and bacteria that does not happen if the time of the child’s first exposure to agents that cause allergies leading to the risk of asthma occur after more than 1 year old child.
A report on the study published in the Journal of Allergy and Clinical Immunology numbers in June showed that early exposure to bacteria and some allergens that have may have a protective effect by forming immune response of young children – the researchers said the findings can help inform strategies for prevention of allergy and wheezing, both signs currency-effects of asthma.
“Our study shows that the initial exposure time can be very important,” the study’s lead author, Robert Wood, MD, director of the room Journal of Allergy and Clinical Immunology at Johns Hopkins Children’s Center said. “What this study tells us, not just on the immune responses of us have been shaped in the first year of life, but also showed some bacteria and allergens play a role important stimulate and train the immune system to behave in a certain way. “
This study was conducted in 467 infants in Baltimore, Boston, New York and St. Louis, the health of the children were followed for 3 years. The researchers came to the residence of the child to assess the extent and types of allergens present in the environment of the child and inspection and certification allergic wheeze through periodic blood tests and extract skin tests, physical exams and surveys of parents. In addition, the researchers collected and analyzed composition of bacteria in dust collected from the homes of 104 children in 467 children in the study.
Infants raised in the hairless mouse, cat dander and disruptions in the first year old rate at 3 years old wheezing lower than children not exposed to the allergen from newborn.
Moreover, the protective effect is cumulative, the researchers found, with the infants were exposed to the allergen 3 have a lower risk of asthma than those who were exposed to one, two or not exposure to certain allergens. Specifically, common stock wheezing 3 times in children living in environments exposed to the allergen over (51%), compared with children whose first years lived in the house present all three types of allergens above (17%).
In addition, infants living in the house with a variety of bacteria are less likely to develop allergies to the environment and evidence of wheezing at age 3.
When researchers learn more about the cumulative effects of exposure to the allergens, bacteria and rats, cockroaches and cats, they found a striking difference. Children are not wheeze and allergy at age 3 was raised to the level of allergy to substances in the environment and most seem to have lived in the house with the most abundant species of bacteria. Approximately 41% of children are not allergic and non-wheezing grew up in the house rich bacteria and allergens such. In contrast, only 8% of children have allergies and wheezing are exposed to these substances in the first year of life.
Asthma is one of the most common diseases in children, according to the United States Centers for Disease Control and Prevention of the United States said that this disease is affecting about 7 million children in this country. When a child is 3 years old, half of the children were wheezing, many cases have developed asthma.
- Exposure to allergens and bacteria (for children under one year of age) as well as a way to help children prevent the risk of asthma. Here is a new information that we want to send to readers. We hope that through this article will help readers with useful additional information on this issue.