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 ...
Regulatory T cells Treg (picture above) is the existence of suppressor cells, which limit ongoing immune responses and prevent autoimmune disease, was postulated over 30 years ago. The recent phenotypic and functional characterization of these cells has led to a resurgence of interest in their therapeutic application in a number of immune-mediated diseases. Two broad subsets of CD3+CD4+ suppressive or Treg cells have been described: constitutive or naturally occurring versus adaptive or inducible Treg. (more…)
An emerging concept is that pro-inflammatory signals lead to loss of Regulatory T Cells (Treg) function. Pasare and Medzhitov ( ...
The intracellular forkhead winged transcription factor Foxp3 (forkhead box P3) appears to be specifically expressed by naturall ...
The induction of immune tolerance and specific immune suppression are essential processes in the control of immune responses. R ...
Treg cells or regulatory T cells constitute a large population of cellular infiltrate in atopic/allergic inflammation and a dys ...
Allergen-specific immunotherapy is highly effective in the treatment of IgE-mediated allergy diseases such as rhinitis, conjunc ...
Hematopoietic progenitors depend on a variety of cytokines to control their growth and differentiation. These include several different types of colony-stimulating factor (CSFs) and interleukins that each act on specific cell types to promote or inhibit particular types of responses. Detailed discussions of individual cytokines are presented in Chapter 10; for the present, we focus on general principles of cytokine action as illustrated in their effects on hematopoiesis. (more…)
Our understanding of hematopoiesis has advanced greatly in recent years with the isolation and characterization of hematopoietic st ...
Perhaps the most exciting recent advance in the cytokine signaling field has been the elucidation of the Jak/Stat pathway. The ...
The process by which blood cells grow, divide, and differentiate in the bone marrow is called hematopoiesis. Three general cl ...
Although it is commonly imagined that hematopoiesis takes place in a liquid environment resembling the blood, with progenitors resp ...
The Ras-dependent pathway can be triggered by a variety of cytokine receptors, as well as by certain adhesion molecules and by ...
The process by which blood cells grow, divide, and differentiate in the bone marrow is called hematopoiesis. Three general classes of cells are produced:
(1) red blood cells (erythrocytes), responsible for oxygen transport;
(2) platelets, responsible for the control of bleeding; and
(3) white blood cells (leukocytes), the vast majority of which are involved in host defense. (more…)
Our understanding of hematopoiesis has advanced greatly in recent years with the isolation and characterization of hematopoietic st ...
Although it is commonly imagined that hematopoiesis takes place in a liquid environment resembling the blood, with progenitors resp ...
Neutrophils make up an army of more-or-less identical circulating phagocytes that are poised to respond quickly and in vast numbers ...
The Ras-dependent pathway can be triggered by a variety of cytokine receptors, as well as by certain adhesion molecules and by ...
Hematopoietic progenitors depend on a variety of cytokines to control their growth and differentiation. These include several d ...
The immune system consists of proteins, cells and organs that are concerned with defense of the individual, primarily against the threat of disease caused by infectious organisms. An infectious organism that causes disease is called a pathogen and the individual (person or animal) that is infected by a pathogen is called the host. Not all infectious organisms cause disease and some are actually beneficial, for example bacteria living in the gut help to digest certain foods. Infectious organisms that help the host are called commensalism organisms. (more…)
The final stage of the disease process (although it may not be the final stage of the infection) is the actual production of di ...
There are thousands of components to the immune system, and during the course of learning about some of these it can appear tha ...
Serodiagnosis of bacterial diseases is of value only in specific circumstances. IgG antibody is long-lived, and its presence, a ...
Routes by which infectious organisms gain entry into the body include the skin, respiratory tract, gastro-intestinal (GI) tract ...
Allergic Reactions For daily life, of course we need our immune system. Without having immune system, we could not survive ...
Acute phase proteins and the acute phase response in general arc stably conserved in evolution and are universal within each species. They are thus presumably of benefit to the organism undergoing infection, inflammation and/or tissue damage, although much remains to be learned of the properties and functions of many acute phase reactants. On the other hand, sustained, increased production of serum amyloid a Protein (SAA) is a necessary though not sufficient condition for the development of reactive, systemic AA amyloidosis, a grave complication of chronic infection or inflammation. (more…)
There is considerable diversity among acute phase proteins with respect to the concentrations attained, their structures, and their ...
Most acute phase proteins are synthesized in the liver, although the genes for some are also expressed in cells and tissues els ...
Acute phase proteins are plasma proteins, the synthesis and the circulating concentrations of which are adaptively regulated in res ...
With the exception of complement protein C3, most soluble mediators of innate immunity are found in relatively small amounts in ...
Measles virus is a highly infectious viral disease characterized by a sore throat and a blotchy red rash that starts on the fac ...
Exacerbations of asthma are frequently associated with rhinoviral infection. Rhinoviruses infect respiratory epithelial cells, where they replicate. The presence of viral nucleic acids (DNA and RNA) and the production of new virions provoke an innate immune system response, leading to destruction of infected cells through the rapid induction of apoptosis. The lower airways of asthmatic individuals are more susceptible than those of healthy individuals to infection with rhinoviruses, although the basis of this difference has not been understood previously. Using epithelial cells cultured from bronchial brush biopsies of healthy and asthmatic volunteers, rhinovirus 16 (RV16) was found to replicate more rapidly in asthmatic epithelial cells in vitro. (more…)
Eosinophil infiltration of the mucosa is a feature of asthmatic airways. Their adhesion to bronchial epithelial cells has been ...
Local micro environmental factors are crucial in determining both susceptibility to vascular remodeling and the extent of angio ...
Contact of pathogens with the innate immune system will most frequently occur at epithelia, and the biology of the airway epitheliu ...
Measles virus is a highly infectious viral disease characterized by a sore throat and a blotchy red rash that starts on the fac ...
While our primary concern is the impact that the innate immune system has on allergic disease, it is essential to recognize that al ...
Food is essential for sustaining human life. Many love to eat and find enjoyment in this activity. But there are literally thousands people who have “food sensitivities” and suffer adverse allergy effects if they eat particular food that can trigger this event. (more…)
In theory, any kind of food is having the capability to trigger food allergic reaction in our body. All foods contain molecul ...
If you suspect that certain foods trigger wheezing or asthma symptoms in your child, your first action should be a consultation ...
Oral allergy syndrome is one form of allergy that body have allergic reaction to fruits and vegetables. Based on statistics fa ...
The most important aspect of managing food allergies in children and babies is to be sure that the developing child has each an ...
Having a food intolerance test is becoming increasingly popular nowadays. This is because the symptoms of indigestion, stomach ...
Allergic Reactions
For daily life, of course we need our immune system. Without having immune system, we could not survive long, but there are times when the immune system may harm us rather than helps us. If you suffer from sneezing and stuffy nose, watery eyes, every spring or fall, your doctor may assured your hay fever symptoms. These symptoms are allergic reaction to pollen, dust and spores in the air. (more…)
Allergens are the trigger for human body allergic reaction. It is one of human immunological process to react for invader subst ...
The immune system consists of proteins, cells and organs that are concerned with defense of the individual, primarily against t ...
Allergies can be defined as inappropriate immune system reactions to a foreign substance entering body. Allergies are kind of disea ...
Immune system is your body’s defense mechanism to protect from infectious organism and other living object invaded your body. T ...
The Case For a Healthy Immune System The immune system is made up of a complex network of cells and organs that protect the ...
Natural killer cells: history and current status
Natural killer cells are a major component of the immune system, which play important roles in host defense against cancer and microbial infections. Natural killer cells are distinct from T or B lymphocytes, with a characteristic morphology of large granular cells, and can be readily identified by characteristic cell surface molecules. (more…)
The body's innate resistance to many pathogens is provided by enzymes and other proteins in the blood and tissue fluids. These ...
Innate immunity depends on both resident and recruited leukocytes. The macrophage without doubt plays an import- ant role in the de ...
Some of the immediate sequelae of injury are uncomfortably familiar: Soon after an injury occurs, the affected site and its sur ...
Regulatory T cells Treg (picture above) is the existence of suppressor cells, which limit ongoing immune responses and prevent ...
Contact of pathogens with the innate immune system will most frequently occur at epithelia, and the biology of the airway epitheliu ...