Primary Immunodeficiencies: Antibody Deficiency and Immunoglobulin Replacement Therapy

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…)

SAP Gene Defects In Male Patients Diagnosed With Common Variable Immunodeficiency

The molecular basis of Common Variable Immunodeficiency (CVID) is unknown and the diagnosis requires the exclusion of other diseases known to cause primary antibody deficiency syndromes, such as X-linked lymphoproliferative disease (XLP). XLP is a rare primary immunodeficiency disease in which severe immune dysregulatory phenomena occur, typically after exposure to Epstein–Barr virus (EBV). The defective gene in XLP is SAP (SLAM associated protein, where SLAM is signalling lymphocyte activation molecule), a small SH2 domain containing protein involved in signal transduction events downstream of the SLAM family of receptors. (more…)

Multiple Antibiotic Allergy Syndrome| Penicilin Allergies

Patients (and many doctors) frequently use the term ‘allergy’ when referring to any adverse drug reaction, even one that has no features of an IgE-mediated allergy response. However, IgE-mediated allergy explains only about 10% of all adverse reactions to antigen antibody reactions from antibiotics. Patients who have experienced unexplained symptoms during treatment with two or more antibiotics are often said to have ‘multiple antibiotic allergy’; using this definition, the description can be applied to one patient in every 22. (more…)

Haemophilus Influenzae Type B

Of the several species of Haemophilus that are known, Haemophilus influenzae is the most prevalent pathogen. Several distinct capsular serotypes have been defined, but type b H influenzae is responsible for most clinical disease. H influenzae is a respiratory pathogen that colonizes the oropharynx and causes bronchitis, pneumonia, or disseminated infection when local or systemic host defense factors are compromised. (more…)

Antibodies and the Immune Response - Human Immune System

antibodies immune response

B cells

The main function of B cells is to produce antibodies. Antibodies are complex molecules produced by the immune system in response to antigens. As mentioned previously, antigens are foreign proteins or glycoproteins (a sugar linked to a protein) that trigger the immune response. Every living cell produces several different proteins, each unique to its own cell type and species. The antibody produced against the antigen is entirely specific to that antigen. (more…)

Mechanisms of Specific Immunotherapy

mechanisms immunotherapy
The precise mechanisms underlying the effects of Specific Immunotherapy are not well understood but several studies have shown that Specific Immunotherapy T inhibits both early and late immune responses to allergen exposure.

Recently, there have been many studies aimed at elucidating the mechanisms by which allergen-specific immunotherapy works. (more…)

The Immunological Process in an Allergic Reaction

immunological allergic reaction
Allergens are the trigger for human body allergic reaction. It is one of human immunological process to react for invader substance. We find most allergens are common in our environment. Most allergic reactions developed over the years by the immune system. If someone who has suffered from allergies for a long time, they mostly will know when their body gives immediate reaction to an allergen. (more…)

Resident Leukocyte Populations of Innate Immune System

Innate immunity depends on both resident and recruited leukocytes. The macrophage without doubt plays an import- ant role in the detection of pulmonary infections. Low inocula of pneumococci are cleared by macrophages. Alveolar macrophages also have an important role in the initiation of responses to inhaled lipopolysaccharide (LPS) and their function (more…)

Ayurveda Treatment for Allergies Medication

ayurveda treatment
Allergies refers to an exaggerated reaction by our healthy immune system in response to bodily contact with certain foreign substances. These foreign substances are usually harmless. But, in a person whose body is prone to allergies, these foreign substances are recognized by the body and one part of the immune system is turned on. Allergy-producing substances are called as ‘allergens‘. Examples include pollens, dust mite, molds, danders, and certain foods. (more…)

Immunity to Bacteria and How Cellular Immune Response Reacts

immune_bacteriaBacteria cause allergic disease because of toxicity, invasiveness, immunopathology, or lends of these three mechanisms. Thus much of the interaction between a given bacterial species and the cellular immune response can be predicted by considering the immunological mechanisms available in relation to the mechanism of pathogenicity, and the structure of the bacterium. For a toxigenic bacterium, neutralizing antigen & antibody may be all that is needed. Otherwise destruction of the organism itself may be required. (more…)

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