Related Experiment Video
Updated: Sep 1, 2026

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma
Published on: June 4, 2017
[Behavior of total IgE in normal and atopic subjects of various ages]
1Laboratorio di Analisi Chimiche e di Anatomia Patologica, U.S.L. Zona n. 23, Presidio Ospedaliero, Arezzo, Italia.
We have determined total IgE in serum of 640 healthy subjects and 620 atopic asthmatic subjects of both sexes, aged between 1 and 70. Values of antibody E after decimal logarithmic transformation have acquired a path as in Gaussian curves. Healthy subjects, chosen for sex and for unit of ten years of life, constantly show mean values in serum have appeared in the first and second decade of life in males; in second and third in females. Those facts should be originated by genetic factors connected with sex. We have described physiopathological conditions in which an increase of serum IgE could be connected with genetic factors and mechanism ascertained today, both responsible for the control of IgE.
We have determined total IgE in serum of 640 healthy subjects and 620 atopic asthmatic subjects of both sexes, aged between 1 and 70. Values of antibody E after decimal logarithmic transformation have acquired a path as in Gaussian curves. Healthy subjects, chosen for sex and for unit of ten years of life, constantly show mean values in serum have appeared in the first and second decade of life in males; in second and third in females. Those facts should be originated by genetic factors connected with sex. We have described physiopathological conditions in which an increase of serum IgE could be connected with genetic factors and mechanism ascertained today, both responsible for the control of IgE.
Related Concept Videos
Antibody Structure
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
Allergic Reactions
Transcytosis of IgG
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
Allergic Drug Reactions
Development of Immunocompetence
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
Hypersensitivities
Types of Hypersensitivities
Hypersensitivity reactions are categorized into four types: Type 1, Type 2, Type 3, and Type 4. Each type has a distinct mechanism...

