Equine immunology: an introductory review.

The research article provides an updated look at the concepts of immunology, specifically focusing on how these immune response mechanisms function in horses. It explains both cellular and humoral immune responses as well as active and passive methods in which immunity is obtained.

Equine Immunology and its Significance

This research paper is a comprehensive review of equine (horse) immunology, offering insights into the latest concepts of immunology, and applying these concepts in understanding the immune mechanisms in horses.

• Immunology in this context refers to the study of all aspects of the immune system in all organisms. This includes the physiological functioning of the immune system in states of both health and diseases, malfunctions of the immune system, and the physical, chemical, and physiological characteristics of the components of the immune system in vitro.
• Studying immunology in horses (equine immunology) is important as it relates to the health and disease resistance of horses. An understanding of equine immunology is essential in areas such as vaccine development, disease control and prevention, and overall equine health care.

Cellular Mechanisms in Equine Immune Response

This article outlines the cellular mechanisms involved in the immune response of horses, with their likely role in cell-mediated immunity and humoral immunity.

• Cellular immunity refers to immune mechanisms that are mediated by immune cells, particularly T lymphocytes. It serves as the defense mechanism against microbes that survive within cells, including viruses and bacteria. It also plays a major role in tumor cell destruction.
• Humoral immunity, on the other hand, involves components of the immune system in bodily fluids (the ‘humors’), particularly involving antibody production. It mainly protects against bacteria and viruses present in the body fluids.

Equine Immunoglobulins in Humoral Immunity

The structure and function of various equine immunoglobulins are reviewed as a part of describing the humoral immune response.

• Immunoglobulins, often referred to as antibodies, are proteins produced by the immune system in response to foreign substances or pathogens (like bacteria or viruses). They are crucial in fighting off infections and maintaining health.
• The structure and functions of immunoglobulins in horses can offer insights into how horses respond to various infections or diseases, and can aid in the production of efficient vaccines.

Active and Passive Acquired Immunity in Horses

The significance of both humoral and cell-mediated immune responses are considered, in the context of how immunity is actively and passively acquired in horses.

• Active immunity in horses is acquired when the immune system is triggered to produce antibodies to fight off infections, typically through exposure to a pathogen or through vaccinations.
• In passive immunity, the horse receives antibodies from another source, for example, a foal might receive antibodies through the mother’s milk. This type of immunity is temporary and does not involve the recipient’s immune system’s active participation.