Treg cells or regulatory T cells constitute a large population of cellular infiltrate in atopic/allergic inflammation and a dysregulated immune response appears to be an important pathogenetic factor. Cardinal events during allergic inflammation can be classified as activation, organ-selective homing, survival and reactivation, and effector functions of immune system cells. T cells are activated by aeroallergens, food antigens, autoantigens, and bacterial exotoxins superantigens in allergic inflammation. They are under the influence of the skin, lung, or nose-related chemokine network and show organ-selective homing. (more…)
Allergen-specific immunotherapy is highly effective in the treatment of IgE-mediated allergy diseases such as rhinitis, conjunc ...
The induction of immune tolerance and specific immune suppression are essential processes in the control of immune responses. R ...
The intracellular forkhead winged transcription factor Foxp3 (forkhead box P3) appears to be specifically expressed by naturall ...
An emerging concept is that pro-inflammatory signals lead to loss of Regulatory T Cells (Treg) function. Pasare and Medzhitov ( ...
Regulatory T cells Treg (picture above) is the existence of suppressor cells, which limit ongoing immune responses and prevent ...
Allergen-specific immunotherapy is highly effective in the treatment of IgE-mediated allergy diseases such as rhinitis, conjunctivitis, asthma, and venom allergy hypersensitivity. It is the only treatment that leads to lifelong tolerance against previously disease-causing allergens due to restoration of the normal immunity. (more…)
Allergen-specific immunotherapy aims to correct the underlying immune imbalance associated with specific immunotherapy allergic rhi ...
Histamine is a low-molecular-weight monoamine that binds to four different G-protein-coupled receptors, and has recently been d ...
The precise mechanisms underlying the effects of Specific Immunotherapy are not well understood but several studies have shown ...
Treg cells or regulatory T cells constitute a large population of cellular infiltrate in atopic/allergic inflammation and a dys ...
The immunologic mechanisms of sublingual immunotherapy are less established. In Cochrane analysis, the authors concluded that t ...
With the exception of complement protein C3, most soluble mediators of innate immunity are found in relatively small amounts in the serum under normal conditions. The concentrations of several of these proteins, however, can increase as much as 1000-fold during serious infections or other crises, as part of a coordinated protective reaction called the acute-phase response. In this response, the liver temporarily increases its synthesis of more than 30 different serum proteins, often called acute-phase proteins (Table bellow). Many of these, such as complement factors C3 and B, MBL, LBP, C-reactive protein, and serum amyloid protein P, participate in antimicrobial defense. (more…)
Acute phase proteins are plasma proteins, the synthesis and the circulating concentrations of which are adaptively regulated in res ...
Most acute phase proteins are synthesized in the liver, although the genes for some are also expressed in cells and tissues els ...
There is considerable diversity among acute phase proteins with respect to the concentrations attained, their structures, and their ...
Acute phase proteins and the acute phase response in general arc stably conserved in evolution and are universal within each specie ...
An especially elaborate and important type of innate antimicrobial enzymes defense is provided by a group of serum proteins tha ...
Other humoral effectors and humoral factors have the ability to lyse microorganisms directly. The best studied of these are a class of small peptide antibiotics known as defensins, which in their active forms are all roughly 30 amino acids long (3,5 kilodaltons), positively charged, and protease-resistant. Each also has three internal disulfide bonds. They are classified as either α or β defensins based on the arrangement of the disulfides, but both classes have nearly the same compact, folded structure consisting of three strands of antiparallel β-pleated sheets. (more…)
Contact of pathogens with the innate immune system will most frequently occur at epithelia, and the biology of the airway epitheliu ...
The body's innate resistance to many pathogens is provided by enzymes and other proteins in the blood and tissue fluids. These ...
Innate immune responses are seen in a very broad range of tissues. Indeed, the Toll-like receptors (TLRs, one of the most important ...
While our primary concern is the impact that the innate immune system has on allergic disease, it is essential to recognize that al ...
A few of the best known humoral effectors of innate immunity are listed in Table 1 bellow, along with the types of target molec ...
Some of the immediate sequelae of injury are uncomfortably familiar: Soon after an injury occurs, the affected site and its surrounding tissues become reddened, warm, swollen, and painful. These four signs which are probably the most useful and ubiquitous diagnostic clues in all of clinical medicine are hallmarks of acute inflammation, the body’s initial physiologic reaction to tissue distress. In its simplest form, inflammation is a response carried out by blood vessels and by the endothelial cells that line them. (more…)
The response to injury usually begins with dilatation of small blood vessels in and around the injured site (figure bellow). Th ...
Once it is tethered onto the venule wall, the neutrophil or other leukocyte comes into contact with a wide variety of inflammatory ...
Acute inflammatory response constitute the first line of defense against infection pathogenesis and how immune system works as ...
Nearly all tissues, organs, and serosal cavities harbor a population of resident phagocytes. Most contain only a diffuse scattering ...
Innate immune responses are seen in a very broad range of tissues. Indeed, the Toll-like receptors (TLRs, one of the most important ...
A few of the best known humoral effectors of innate immunity are listed in Table 1 bellow, along with the types of target molecules they recognize. Some are enzymes that can directly injure or kill microbial pathogens. An example is lysozyme, an endoglycosidase found in human saliva, mucus, tears, and other secretions, which attacks the protective cell wall encasing every bacterial cell. Lysozyme acts by digesting the peptidoglycan meshwork formed by long carbohydrate chains of alternating N-acetylmuramic acid and N-acetylglucosamine residues, crosslinked covalently by short oligopeptide sidechains which is a major constituent of all bacterial cell walls but is not found in mammalian tissues. (more…)
An especially elaborate and important type of innate antimicrobial enzymes defense is provided by a group of serum proteins tha ...
One especially favored target for immune recognition is bacterial lipopolysaccharide (LPS). This macromolecule is found only in ...
The body's innate resistance to many pathogens is provided by enzymes and other proteins in the blood and tissue fluids. These ...
With the exception of complement protein C3, most soluble mediators of innate immunity are found in relatively small amounts in ...
Although it is commonly imagined that hematopoiesis takes place in a liquid environment resembling the blood, with progenitors resp ...
The body’s innate resistance to many pathogens is provided by enzymes and other proteins in the blood and tissue fluids. These proteins are the effectors (ie, the active agents) of humoral innate immunity, and they have features in common with one another that are also characteristics of the innate immune system as a whole. First, these proteins are continually expressed throughout life, regardless of whether or not their protective effects are needed at a given moment. Second, although many of these proteins can be produced in higher quantities in times of need, their intrinsic properties (eg, substrate specificity and ige binding affinity) never change: The characteristics of these proteins have been shaped by evolution, are genetically determined, and are fixed at birth, so that they do not vary during an individual’s lifetime. (more…)
A few of the best known humoral effectors of innate immunity are listed in Table 1 bellow, along with the types of target molec ...
Contact of pathogens with the innate immune system will most frequently occur at epithelia, and the biology of the airway epitheliu ...
Innate immune responses are seen in a very broad range of tissues. Indeed, the Toll-like receptors (TLRs, one of the most important ...
An especially elaborate and important type of innate antimicrobial enzymes defense is provided by a group of serum proteins tha ...
Other humoral effectors and humoral factors have the ability to lyse microorganisms directly. The best studied of these are a c ...
Acute phase proteins are plasma proteins, the synthesis and the circulating concentrations of which are adaptively regulated in response to most forms of acute inflammation, infection and tissue injury. The name arises from the fact that the first such protein, C-reactive protein (CRP), was originally discovered in serum sickness of patients in the acute phase of pneumococcal pneumonia. (more…)
There is considerable diversity among acute phase proteins with respect to the concentrations attained, their structures, and their ...
Acute phase proteins and the acute phase response in general arc stably conserved in evolution and are universal within each specie ...
Most acute phase proteins are synthesized in the liver, although the genes for some are also expressed in cells and tissues els ...
With the exception of complement protein C3, most soluble mediators of innate immunity are found in relatively small amounts in ...
Some of the immediate sequelae of injury are uncomfortably familiar: Soon after an injury occurs, the affected site and its sur ...
Primary immunodeficiencies occur with a frequency approaching that of cystic fibrosis (1:2500 live births). However, because they are perceived to be very rare and usually present with common infections, they are under-diagnosed. Often the diagnosis is not considered until substantial end-organ damage has occurred, by which time definitive treatment is only partially successful in preventing further infections. (more…)
The molecular basis of Common Variable Immunodeficiency (CVID) is unknown and the diagnosis requires the exclusion of other disease ...
Common Variable Immunodeficiency (CVID) is the most frequent primary immunodeficiency in man that requires medical intervention. Mo ...
Drug allergy and adverse drug reactions are common among many people. Those side affect of consuming drugs affecting an about 3 ...
Serodiagnosis of bacterial diseases is of value only in specific circumstances. IgG antibody is long-lived, and its presence, a ...
Antibodies which are also known as immunoglobulin are found in our blood and other bodily fluids. Antibodies are used as a mechan ...
Breast milk contains a variety of bioactive substances, among them soluble CD14 (sCD14), which plays an important role in innate immunity. The authors analysed data of a large prospective birth cohort study to examine the determinants of sCD14 in breast milk, and investigated whether breast-feeding practice and sCD14 concentrations in breast milk are determinants of the risk of Atopic Dermatitis and asthma in children. Eight hundred and three mothers and their newborn infants were included in this analysis. (more…)
The prevalence of atopic dermatitis is increasing in Western societies. The hygiene hypothesis proposes that this is due to red ...
The protective effect of breast-feeding on asthma and allergy has been debated for more than 60 years without any hope of a con ...
Atopic Dermatitis is considered to be one of the first manifestations in the atopic march. The aim of this study was to investi ...
If the breast-fed baby is lactose intolerant (usually a temporary condition following intestinal infection at this age), moth ...
If an exclusively breast-fed baby is exhibiting the type of allergic to milk symptoms previously discussed, the mother will i ...