The induction of immune tolerance and specific immune suppression are essential processes in the control of immune responses. Regulatory T cells (Treg) play a central role in immune control in the periphery. Two broad categories of Treg have been described: naturally occurring Treg that are present in all individuals and antigen-induced Treg that secrete inhibitory cytokines such as interleukin (IL)-10 and/or transforming growth factor (TGF)-ß. (more…)
Regulatory T cells Treg (picture above) is the existence of suppressor cells, which limit ongoing immune responses and prevent ...
An emerging concept is that pro-inflammatory signals lead to loss of Regulatory T Cells (Treg) function. Pasare and Medzhitov ( ...
Treg cells or regulatory T cells constitute a large population of cellular infiltrate in atopic/allergic inflammation and a dys ...
The intracellular forkhead winged transcription factor Foxp3 (forkhead box P3) appears to be specifically expressed by naturall ...
Allergen-specific immunotherapy is highly effective in the treatment of IgE-mediated allergy diseases such as rhinitis, conjunc ...
The Tcell Ig domain and mucin domain (TIM) proteins, the genes for which are located on chromosome 5q, have been suggested to be involved in allergic disease. This study examined allergies genetic association of sequence variants of the TIM1 and TIM3 genes in an African-American population. Case–control and family based association analyses were performed for three SNPs each in the TIM1 and TIM3 genes, and an insertion/deletion polymorphism in Tcell Ig domain and mucin domain 1. (more…)
A previous genome-wide screen for mite-sensitive atopic dermatitis asthma in Japanese families indicated linkage to chromosome 5q33 ...
Although ADAM33 was the first gene identified by positional cloning to underlie the risk factor of asthma, attempts to replicate th ...
CD14 is part of the receptor complex for endotoxin, which is a component of tobacco smoke. The CD14 gene is located on chromoso ...
Increasing evidence demonstrates that cytokines of Th1 and Th2 cells play important roles in allergic disorders. This study exa ...
The T-bet (T-box 21) gene (TBX21) encodes a transcription factor, T-box expressed in T cells, which has been implicated in asthma t ...
Asthma is a complex syndrome rather than a single disease entity. Different phenotypes with varying prognosis and determinants have been described, particularly over childhood years 2 and will be discussed in detail in the following. For example, transient early wheezing is characterized by the occurrence of wheezing in infants up to the age of 2 to 3 years which disappears thereafter. The main predictor of these wheezing illnesses is premorbid reduced lung function before the manifestation of any wheeze. These decrements in pulmonary function are in part determined by passive smoke exposure in utero 4 and result in symptoms of airway obstruction when infants get infected with respiratory viruses. (more…)
Atopic Dermatitis is considered to be one of the first manifestations in the atopic march. The aim of this study was to investi ...
The geographical variation in the prevalence of asthma in children does not coincide with variations in air pollution levels. The i ...
The effects of exposure to environmental tobacco smoke (ETS) on children have been extensively studied and numerous surveys hav ...
The prevalence of atopic dermatitis is increasing in Western societies. The hygiene hypothesis proposes that this is due to red ...
There is much controversy as to the role of allergen exposure for the development of atopic sensitization towards this allergen. Wh ...
According to the National Survey of Children in the United States, the prevalence of asthma was 15% (last 12 months), that of hay fever was 12.4%, of skin allergy 9.8% and digestive/ food allergy 3.6%. Overall, every fourth child is affected (25.4%). Regarding the diagnosis of asthma in children, the prevalence, for instance in Germany, rose from 1.25% to 2.21% between 1951–1952 and 1964–1965. For the last 10 years there has been dispute about whether the increase in asthma and allergy has come to a halt. However, the observation period is too short to draw any conclusion. A study of adults went beyond this simple dispute and investigated age and cohort effects for immunoglobulin E (IgE) sensitization from 1992 to 1998–2002. (more…)
Epidemiological studies of farm children are of international interest because farm children are less often atopic disorders, h ...
During recent decades there has been extensive epidemiological research to explore the increasing prevalence of asthma and alle ...
The prevalence of atopic dermatitis is increasing in Western societies. The hygiene hypothesis proposes that this is due to red ...
A general pattern of factors influencing development of asthma seems to be emerging, including family allergy history/ asthma g ...
Atopic Dermatitis is considered to be one of the first manifestations in the atopic march. The aim of this study was to investi ...
To prevent the development of allergy, allergen avoidance has to be instituted before sensitization has occurred. The specific type of aero allergens may vary depending on the climatic and economic situation. For example, House Dust Mite is the most important allergen in humid climates and pet allergens assume importance in cold countries, while cockroach allergen is the major sensitizing agent in crowded, inner city areas. Several large prospective studies have instituted House Dust Mites avoidance measures during pregnancy, at birth and later in childhood, and assessed children for asthma and allergic manifestations. (more…)
Allergen exposure plays a role in the development of asthma bronchial hyper-responsiveness and in the acute inflammatory response ...
Two factors thought to influence the risk factor asthma are the promoting effect of sensitization to house dust mites and the preve ...
Exposure to allergens plays a role in the development of BHR and in the chronic inflammatory response seen in asthmatic patients. R ...
Asthma attacks can be triggered by a range of items such as second hand smoke, mold spores, pet dander, and pollen. The basic ...
Asthma and allergic diseases are common in both children and adults. Their development depends on an interaction between asthma ...
Classification of bronchial asthma can be based on age, etiology, associated characteristics, or severity. Classifications based on severity have been primarily designed as an approach to asthma treatment. Thus, management of mild intermittent disease may require only bronchodilator treatment, but frequent attacks with or without persistent mild symptoms require a comprehensive approach to controlling inflammation as well as bronchodilator treatment. Severe asthma can become a major clinical problem that requires specialist care and many different approaches to asthma attack treatment. (more…)
Allergic rhinitis is a high-prevalence disease. This high prevalence translates into a high cost to society in terms of overall ...
The two strongest risk factors for asthma in childhood are a family history and immediate hypersensitivity to common allergens. ...
If you have sinusitis, one of the displeasing aspects of sinusitis is dizziness condition that comes with it. Symptoms of sin ...
Asthma is a continuing problem for healthcare, particularly in the industrialized world. Some 150 million people are estimated ...
Treatment of allergic diseases in childhood presents unique challenges, as both the beneficial effects and the detrimenta ...
Mold is a fungus type and different from plants, animals and bacteria. Molds are kind of decomposers of dead organic matter such as leaves, wood and plants. Mold can sometimes infect living plants and animals. Spores and organs such as human hair is the favorite of the mold colonies, but are too small for us to see without a microscope. If a large amount of mold growing on the surface, often appears black or green. The rust color is affected by nutrient source and age of the colony. If mold is growing behind your home wallpaper, colorful pink may appear or purple spots. (more…)
Almost everyone is not affected by exposure to mold, if they are not exposed to many fungi or mold. Unfortunately, they are n ...
If you suspect you have mold in your house, first, do not worry. Remember that mold is everywhere, so it’s normal to have the ...
Let's start out with the basics. Mold is an organism that is everywhere. There is no place there is no mold unless it is a "Cle ...
There is nothing more scary for a new parent than the thought that their child might get sick. But while most parents manage to ...
If you have a mold allergy, gluten allergy, or had any other type of allergy, then you need to learn natural allergy treatments ...
There is much controversy as to the role of allergen exposure for the development of atopic sensitization towards this allergen. While in some studies, a clear, almost linear dose-response relation between allergen exposure and sensitization has been found, others described a bell-shaped association with higher levels of exposures relating to lower rates of atopic sensitization. Part of the discrepancy may relate to the type of allergen, since mostly cat but not house dust mite allergy allergen exposure has been shown, in some studies, to exert protective effects at higher levels of exposure. (more…)
Natural history studies with the following design features provide a firm epidemiologic foundation for risk factor assessments and ...
The effects of exposure to environmental tobacco smoke (ETS) on children have been extensively studied and numerous surveys hav ...
Two factors thought to influence the risk factor asthma are the promoting effect of sensitization to house dust mites and the preve ...
Allergen exposure plays a role in the development of asthma bronchial hyper-responsiveness and in the acute inflammatory response ...
Sensitization to pets remains a risk factor for asthma and rhinitis, and can occur in people who have never lived with a pet. S ...
It is very common in asthmatic children where overprotective parents prevent a normal level of exercise to their kids. However, a controlled sport appropriate to the course of their disease is very healthy.
Asthma is an inflammatory disease of the airways characterized by variable bronchial obstruction and reversible, either spontaneously or with treatment, (more…)
Asthma treatment has one main goal to maintain a normal and healthy lifestyle, including exercise and other physical activities. Pe ...
Up to 85% of asthmatics patients have symptoms of wheezing during or after exercise. Moreover, many patients diagnosed with all ...
It is widely knowt that pollen, pollution, smoke can trigger an asthma attack. But one interesting thing is exercise can also trigg ...
Most attacks of asthma, though frightening and uncomfortable, are usually mild and subside within a few minutes with simple treatme ...
This article focuses on symptoms of exercise induced asthma. Exercise can be a trigger factor when asthma is not well control ...
Definitions of anaphylaxis vary considerably, impeding the comparison of different clinical studies. Different definitions of anaphylaxis have been developed as clinical descriptions of severe allergic reactions, different authors emphasizing different symptoms.
The author aimed to develop a simple clinical grading system and definition for anaphylaxis using clinical data. He retrospectively analyzed 1149 case records (median age 29 years) with systemic allergic reactions (30% venom allergy, 22% iatrogenic allergy, 18% food allergy) from an emergency department in Australia. (more…)
It will be helpful for you to have some understanding of the terms that are currently being used by practitioners in the field ...
Systemic allergic reactions are a relatively common clinical emergency. In their mildest form, they may just manifest as system ...
Families frequently do not use their self-injectable adrenaline device, even when their kids is experiencing a potentially life ...
Although most forms of allergy causes uncomfortable situations, an extreme allergic reaction to an allergen can eventually lead to ...
Anaphylactic reactions to Hymenoptera venom are relatively uncommon but can be life-threatening: venom immunotherapy is the treatme ...