Eosinophils

Definition

Eosinophils are a type of white blood cell involved in the immune response, particularly in combating parasitic infections and allergic reactions. They also play a role in inflammation and can influence respiratory conditions.

5 Must Know Facts For Your Next Test

1. Eosinophils are elevated in conditions such as asthma and other pulmonary diseases.
2. They release inflammatory mediators like leukotrienes and cytokines that affect the airways.
3. A normal range for eosinophil count is typically between 1-4% of total white blood cells.
4. Dietary factors, such as omega-3 fatty acids, can reduce eosinophil activation and inflammation.
5. Vitamin D deficiency has been associated with increased eosinophil activity and poor respiratory health.

Review Questions

• What is the primary function of eosinophils?
• How do eosinophils contribute to pulmonary diseases?
• Which dietary factors can influence eosinophil activity?

Related terms

Leukotrienes:

Lipid mediators produced by eosinophils that contribute to inflammation and bronchoconstriction in asthma.

Cytokines: Small proteins released by cells, including eosinophils, that have an effect on interactions between cells, communications, and behavior of cells.

Asthma:

A chronic respiratory condition characterized by airway inflammation, where elevated levels of eosinophils are commonly observed.