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SIRS is a serious condition related to systemic inflammation, organ dysfunction, and organ failure. It is a subset of cytokine storm, in which there is abnormal regulation of various cytokines. [6] SIRS is also closely related to sepsis, in which patients satisfy criteria for SIRS and have a suspected or proven infection. [2] [3] [4] [7]
Cytokines are important in health and disease, specifically in host immune responses to infection, inflammation, trauma, sepsis, cancer, and reproduction. The word comes from the ancient Greek language : cyto , from Greek κύτος, kytos , 'cavity, cell' + kines , from Greek κίνησις, kinēsis , 'movement'.
The immune response to cancer can be categorized into the two main categories as discussed above: innate immunity and adaptive immunity. Innate immunity is the first line of defense against cancer. It consists of non-specific immune cells that can recognize and destroy abnormal cells, including cancer cells.
Here, the immune system adapts its response during an infection to improve its recognition of the pathogen. This improved response is then retained after the pathogen has been eliminated, in the form of an immunological memory, and allows the adaptive immune system to mount faster and stronger attacks each time this pathogen is encountered. [4] [5]
Dendritic cells are named after their structure that resembles that of a dendrite of an axon, and they have two vital functions: display antigens, which are recognized by T cells and alert lymphocytes of the presence of an injury or infection. When the body is introduced to infection or injury, dendritic cells migrate to immune or lymphoid ...
The term inflammation is not a synonym for infection. Infection describes the interaction between the action of microbial invasion and the reaction of the body's inflammatory response—the two components are considered together in discussion of infection, and the word is used to imply a microbial invasive cause for the observed inflammatory ...
An immune response is a physiological reaction which occurs within an organism in the context of inflammation for the purpose of defending against exogenous factors. These include a wide variety of different toxins, viruses, intra- and extracellular bacteria, protozoa, helminths, and fungi which could cause serious problems to the health of the host organism if not cleared from the body.
It ensures that a single antigen is recognized and attacked through its overlapping parts, called epitopes, by multiple clones of B cell. [1] [2] In the course of normal immune response, parts of pathogens (e.g. bacteria) are recognized by the immune system as foreign (non-self), and eliminated or effectively neutralized to reduce their ...