Cells can react to chemical substances {allergy}|. Chemical substances release muscle-constricting and blood-vessel-relaxing chemicals {histamine, allergy}. Antihistamines can block histamine chemical reactions and treat allergies. Food allergans include gluten and soybean p34 protein. Peanuts, tree nuts, milk, eggs, shellfish, and fish have allergans. Gluten causes celiac sprue. Allergies can involve tens of genes.
Histamines can cause hives, eye burning, shock, breath shortness, hard breathing, and edema {allergic reaction}|.
Histamines can cause nausea, weakness, low temperature, and convulsions {anaphylaxis}|.
Lungs can have allergic reactions {atopy} {asthma}|. Eczema, hay fever, anaphylaxis to bee sting or peanuts, and other allergies involve immunoglobulin and histamine.
causes
Dust-mite dung, pollen, feathers, molds, foods, metal vapor, plastics, wood, cigarette smoke, paint, sprays, aspirin, heart drugs, and exhaust gases can cause asthma. Immunization can activate Th1 cells. Mycobacteria can activate Th2 cells. Perhaps, virus exposure, isocyanate, trimellitic anhydride, and phthalic anhydride cause asthma.
biology
Immunoglobulin-E release signals mast cells, which release histamines. Asthma can cause smooth muscle to contract uncontrollably.
Pollen allergies {hay fever}| affect eye, throat, and lung mucous membranes.
Allergic reactions {hives}| can cause itching skin welts.
4-Medicine-Disease-Kinds-Organ-Immune
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Date Modified: 2022.0225