Allergen Sentence Examples
It is claimed that these reduce the level of airborne cat allergen by about 50% .
Six hands still had detectable levels of peanut allergen.
At night, in bed, we spend on average eight hours in close contact with large amounts of house dust mite allergen.
Patients often assume that cat allergen is only present in the houses that are homes to cats.
Airway response to stimuli There are three phases to the asthmatic response of an atopic asthmatic following exposure to an allergen.Advertisement
A brazil nut allergen was identified in soya bean genetically engineered with a brazil nut gene (Nordlee et al, 1996 ).
See the Guidance Notes on Food Labeling produced by the Food Standards Agency 11.4 What are the exceptions to allergen declarations on labels?
Antihistamine tablets and syrups Antihistamines prevent the histamine tablets and syrups Antihistamines prevent the histamine your body produces to the allergen from causing the allergic symptoms.
In response to an allergen entering the body, mast cells in our immune systems release histamine, the substance that causes allergic symptoms.
Chicken egg lysozyme is a well- known potent food allergen  while human lysozyme is clearly not allergenic.Advertisement
The symptoms include a red, itchy rash where the allergen has been in contact with the skin.
The body's immune system becomes sensitive to the allergen.
In addition, the animal becomes tolerant to the allergen.
Any substance that triggers an allergic reaction is called an allergen.
It is known that different breeds of cats have different levels of the glycoprotein Fel D 1, the allergen that causes cat allergies in people.Advertisement
Clients that experienced an allergic reaction are said to be extremely allergic to cats and are believed to have had a reaction to an allergen other then FEL D1.
Low allergen and hypoallergenic cats may be the answer for many allergy sufferers who dream of sharing their life with a feline friend, but it's clear prospective owners will have to pay a hefty price for that pleasure.
If something causes an allergic reaction, you'll know it's an allergen and you can eliminate it from her diet.
Allergic reactions may be dose dependent; that is, longer exposure or exposure to larger amounts of the offending allergen may cause a greater response of the immune system and result in a stronger reaction.
Provocation testing involves direct exposure to a likely allergen, either through inhalation or ingestion.Advertisement
In percutaneous or prick testing, a drop of each allergen to be tested is placed on the skin, usually on the forearm or the back.
A typical battery of tests may involve two dozen allergen drops, including a drop of saline solution that should never provoke a reaction (negative control) and a drop of histamine that should always provoke a reaction (positive control).
Intradermal testing involves directly injecting allergen solutions into the skin.
Separate injections are made for each allergen tested.
If antibodies against a particular allergen are present, those antibodies will bind to the solid medium and remain attached after being rinsed.Advertisement
A purified preparation of the allergen is inhaled or ingested in increasing concentrations to determine if it will provoke symptoms.
In bronchial provocation challenges, the individual inhales increasingly concentrated solutions of a particular allergen prepared in a nebulizer.
Intradermal testing may inadvertently result in the injection of the allergen into the circulation, with an increased risk of adverse reactions.
This reaction does not mean the substance actually causes the child's symptoms, however, since he or she may have no regular exposure to the allergen.
In fact, the actual allergen may not have been included in the test array.
Following allergen inhalation, reduction in exhalation capacity of more than 20 percent, and for at least 10 to 20 minutes, indicates a positive reaction to the allergen and the sensitivity of the individual being tested.
Gastrointestinal symptoms within 24 hours following the ingestion of a suspected food allergen indicates a positive response and sensitivity to that food allergen.
Histamine-A substance released by immune system cells in response to the presence of an allergen.
Contact dermatitis is a rash that appears after the skin is exposed to an allergen, such as metal, rubber, some cosmetics or lotions, or some types of plants (e.g. poison ivy).
The rash triggered by allergies should disappear as soon as the allergen is removed; drug rashes will fade when the person stops taking the drug causing the allergy.
In a food allergy or sensitivity, when the child eats a particular food, (such as eggs, for example) usually by the time the eggs reach the stomach or the intestines, the body reads the presence of eggs as an allergen (something harmful).
Parents need to become proficient label readers, especially if the allergen is a nut or other food that may cause anaphylaxis.
Allergy shots, also called immunotherapy, are a form of treatment that reduces a person's allergic reaction to a particular allergen.
The incremental increases of the allergen cause the child's immune system to become less sensitive to the substance by producing a "blocking" antibody.
Depending on the severity and nature of the allergies, allergen avoidance and allergy medications alone may not effectively manage symptoms in children.
A pediatric allergist can diagnose the specific cause of the allergic reaction and provide the correct allergen extracts.
The child's particular allergen may be difficult or impossible to avoid because of exposure to environment.
The allergist may decide to conduct skin testing on a child to determine the specific allergen that is causing a reaction in the child.
This condition is unusual, since the amount of allergen used is small; however, it can happen if the child is highly sensitive to the allergen.
Once the testing is finished, the allergist prepares an allergen abstract (serum) specially for the child.
In this treatment, steadily increasing doses of allergen extract are given every few hours instead of every few days or weeks.
Children who are allergic to certain substances, medications, or foods can avoid the resulting itch if they avoid contact with the allergen.
Antihistamines work by blocking the effects of histamine, a chemical released by mast cells during an allergic response to an allergen.
Conjunctivitis caused by an allergic reaction should clear up once the allergen is removed.
However, allergic conjunctivitis will likely recur if the individual again comes into contact with the particular allergen.
After initial exposure to a substance such as wasp sting toxin, the allergic child's immune system becomes sensitized to that allergen.
On a subsequent exposure to the specific allergen, an allergic reaction, which can involve a number of different areas of the body, occurs.
Specifically, an immunoglobulin antibody protein, IgE, is produced in response to the presence of the allergen.
However, an anaphylactoid reaction can occur on initial exposure to an allergen as well as on subsequent exposures, since no sensitization is required.
The symptoms of anaphylaxis may occur within seconds of exposure, or be delayed 15 to 30 minutes and sometimes even an hour or more later, if the allergen is aspirin or other similar drugs.
Once a child has had an anaphylactic reaction, an allergist should be consulted to identify the specific allergen that caused the reaction.
The allergist will take a detailed medical history and use blood or skin tests to identify the allergen.
If the cause of the allergies is determined to be an indoor allergen such as dust mites or pet dander, steps can be taken to rid the home of some of the allergens.
A small amount of the allergen is injected at first, with tolerance built up over weeks or months.
The shots are given frequently at first, but when a maintenance level of the allergen is reached, they are given less frequently.
T-cell-mediated allergic drug reactions require immune system cells called T-memory cells that are specific for the drug allergen.
When exposed to the allergen, the T-cells are activated and cause an inflammatory response.
In irritant contact dermatitis, the rash is usually limited to the area that was exposed to the substance, whereas in allergic contact dermatitis, the rash often spreads beyond the area directly exposed to the allergen.
If the substance was changed to an allergen, the primary sensation is itching.
Allergic contact dermatitis (ACD) results when repeated exposure to an allergen (an allergy-causing substance) triggers an immune response that inflames the skin.
Sensitivity to the specific allergen is often lifelong.
It can often be treated at home once the irritant or allergen has been identified.
More difficult cases require patch testing to identify the specific allergen.
Each well is filled with a small amount of the allergen being tested and the patch is taped to normal skin on the patient's upper back.
Identifying the allergen may require repeated testing, can take weeks or months, and is not always successful.
The best treatment for contact dermatitis is to identify the allergen or irritating substance and avoid further contact with it.
The leaves of jewelweed (Impatiens spp.), which often grows near poison ivy, may neutralize the poison-ivy allergen if rubbed on the skin right after contact.
An attack of hives is set off when such a substance, called an allergen, is ingested, inhaled, or otherwise contacted.
When mast cells encounter an allergen, they release histamine and other chemicals, both locally and into the bloodstream.
Most cases of hives clear up within one to seven days without treatment, providing the cause (allergen) is found and avoided.
Preventing hives depends on avoiding the allergen causing them.
If hives are a recurrent problem, parents should keep track of the foods the child eats in an attempt to discover the allergen.
Nausea, vomiting, and breathing problems occur after exposure to a known allergen.
This is the condition known as allergy, and the offending substance is called an allergen.
Skin testing involves placing a small amount of liquid containing a specific allergen on the skin and then either poking, scratching, or injecting it into the skin surface to observe whether redness and swelling occurs.
Provocation testing involves challenging an individual with either a small amount of an inhalable or ingestible allergen to see if a response is elicited.
Injections involve very small but gradually increasing amounts of allergen, over several weeks or months, with periodic boosters.
In most cases, inhaling an allergen sets off the chain of biochemical and tissue changes leading to airway inflammation, bronchoconstriction, and wheezing characteristic of asthma.
Because avoiding (or at least minimizing) exposure is the most effective way of treating asthma, it is vital to identify the allergen or irritant that is causing symptoms in a particular child.
Severe episodes, which are less common, may be seen when the patient has a viral respiratory tract infection or is exposed to a heavy load of an allergen or irritant.
An allergic skin response does not always mean that the allergen being tested is causing the asthma.
Also, the body's immune system produces an antibody to fight off the allergen.
The amount of antibody can be measured by a blood test that will show how sensitive the patient is to a particular allergen.
If the diagnosis is still in doubt, the patient can inhale a suspect allergen while using a spirometer to detect airway narrowing.
Special tests, such as allergy skin testing or an allergen challenge, are needed.
They can also prevent attacks when given before exercise or when exposure to an allergen cannot be avoided.
If a patient's asthma is caused by an allergen that cannot be avoided, or if medications have not been effective in controlling symptoms, immunotherapy (also called allergy shots) may be considered.
Typically, increasing amounts of the allergen are injected over a period of three to five years, so that the body can build up an effective immune response.
If cockroach allergen is causing asthma attacks, the roaches should be killed (using poison, traps, or boric acid rather than chemicals).
In hypersensitive individuals even a tiny amount of allergen can cause a severe allergic reaction.
Pollen-A fine, powdery substance released by plants and trees; an allergen.
The substance that causes the allergy is called an allergen.
This type of allergic response may develop over several days following contact with the allergen, and symptoms may persist for a week or more.
Symptoms of food allergies depend on the tissues most sensitive to the allergen and whether the allergen spread systemically by the circulatory system.
It sometimes has a characteristic pattern from the object containing the allergen, such as a glove allergy with clear demarcation on the hands, wrist, and arms where the gloves are worn, or on the earlobes by wearing earrings.
Whole-body or systemic reactions may occur from any type of allergen but are more common following ingestion or injection of an allergen.
The symptoms may begin within five minutes after exposure to the allergen up to one hour or more later.
Allergy is suspected if the symptoms presented are characteristic of an allergic reaction, and this occurs repeatedly upon exposure to the suspected allergen.
Skin tests are performed by administering a tiny dose of the suspected allergen by pricking, scratching, puncturing, or injecting the skin.
The allergen is applied to the skin as an aqueous extract, usually on the back, forearms, or top of the thighs.
Once in the skin, the allergen may produce a classic immune wheal and flare response (a skin lesion with a raised, white, compressible area surrounded by a red flare).
The tests usually begin with prick tests or patch tests that expose the skin to small amounts of allergen to observe the response.
A positive reaction occurs on the skin even if the allergen is at levels normally encountered in food or in the airways.
Intradermal skin tests involve injection of the allergen into the dermis of the skin.
These tests involve the administration of allergen to elicit an immune response.
Provocation tests, most commonly done with airborne allergens, present the allergen directly through the route normally involved.
Delayed allergic contact dermatitis diagnosis involves similar methods by application of a skin patch with allergen to induce an allergic skin reaction.
Food allergen provocation tests require abstinence from the suspect allergen for two weeks or more, followed by ingestion of a measured amount of the test substance administered as an opaque capsule along with a placebo control.
For children and adolescents with food allergies, all foods must be monitored to make sure that the allergen is not an ingredient or was not used during preparation.
Local weather reports on television and on Web sites provide detailed allergen maps of pollen and mold/mildew spores.
Immune hypersensitivity reaction-An allergic reaction that is mediated by mast cells and occurs within minutes of allergen contact.
Rash-A spotted, pink or red skin eruption that may be accompanied by itching and is caused by disease, contact with an allergen, food ingestion, or drug reaction.
By eliminating the food allergen, the premise was that AD/HD characteristics would disappear.
The test is performed by pricking the surface of the skin with a thin needle containing a small amount of a suspected allergen.
Brazilian Blowout solution has been shown in some studies to contain formaldehyde, which is a human carcinogen and commonly an allergen.
Bee pollen can be used to treat allergies by helping to build your body's defenses against the allergen particles, but if you have a known pollen allergy, you should talk to a health care provider before you begin taking the supplement.
Available products include air purifiers, allergen reduces, replacement filters and odor eliminators.The garment care product line helps you keep clothes looking professional and stylish.
You can also buy allergen reduce replacement filters and humidifier replacement filters.
You may experience hives, sneezing, or watery eyes when you come in contact with an allergen.
Many businesses are more accommodating to those with allergen issues due to the increased awareness of celiac disease and other cases of gluten sensitivity.
Jules takes this one step further by also making a product which is nut free, making it adequate for a wide variety of food allergen issues.
Many national fast food chains provide food allergen information on their websites.
Chick-fil-A, for example, includes allergen information not only for gluten, but also milk, eggs, tree nuts, soybeans, fish, shellfish, and peanuts.
McDonalds provides not only allergen information, but also complete ingredient lists for all of their menu items.
They also state that they rely on their suppliers for accurate food allergen information.
The fact that fast food restaurants provide food allergen information is certainly helpful and demonstrates a willingness to accommodate people with special needs.
Diners with particular allergies will also benefit from a helpful list of allergen information, which is updated monthly.
They even have special boxes of convenience meals for seniors and allergen free foods for people who must avoid peanuts, milk, eggs, or soybeans.
There are also senior convenience food boxes, allergen free food boxes, fruit and vegetable boxes, and assorted specialty meat boxes that you can order to help stretch your grocery shopping dollars even further.
A constituent in wheat, gluten is an allergen to a moderate percentage of the population.
Gail shares with us the history of the products, allergen information and talks a little about their quality ingredients.
You should still review the ingredients carefully, as one of them may be an allergen for you, but you can overall feel confident that you are not introducing anything problematic to your largest organ during this unpleasant juncture.
This condition occurs after an individual comes in contact with an allergen or general irritant.
There are a couple different ways to treat this, but often times it is enough to eliminate the cause of the allergen for the rash to disappear on its own.
During allergen deposition the patient should hold their breath to avoid inhaling allergen into lower airways.
They can be better than drugs in relieving allergy symptoms as they remove the allergen from the air before you can inhale it.
Breastfed infants have less exposure to cow?s milk, a potential allergen in genetically susceptible children.
The body 's immune system becomes sensitive to the allergen.
I've never heard of a specific allergy coming and going while the allergen is still there, but he could possibly be allergic to something that occasionally gets tracked in on your cat.
Almost completely hairless, the Sphynx cat does secrete the Fel D 1 allergen.
Additionally, they leave out common allergen causing ingredients like soy, wheat and corn.
It can be an ordeal to isolate the specific food allergen from amongst the bulk ingredients in a product.
It usually is caused by the immune system's response to the body's contact with a foreign substance, such as an allergen or pathogen.
Positive results from any allergy test may be used to narrow candidates for the allergen responsible for the reaction.
Identification of the allergen may help parents avoid exposing their child to the substance and thereby reduce allergic reactions.
Allergy tests may also be done before allergen desensitization treatments to ensure the safety of additional exposure.
This reactive condition is commonly known as allergy, and the offending substance is called an allergen.
Antihistamines are most effective when taken before exposure to an allergen.