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Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
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Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
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Strategies for Study of Neuroprotection from Cold-preconditioning
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Interrelationship between vitamins and cytokines in immunity.

M L Castellani1, Y B Shaik-Dasthagirisaheb, D Tripodi

  • 1Immunology Division, School of Dentistry, Department of Human Dynamics, University of Chieti, Chieti, Italy. mlcastellani@unich.it

Journal of Biological Regulators and Homeostatic Agents
|December 3, 2010
PubMed
Summary

Vitamins play a crucial role in regulating immunity and inflammation by influencing cytokine production. Understanding vitamin-deficiency impacts on immune responses is vital for preventing inflammatory diseases.

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Area of Science:

  • Immunology
  • Nutritional Science
  • Biochemistry

Background:

  • Cytokines are key regulators of immune and inflammatory responses.
  • Vitamins are essential nutrients involved in modulating immunity.
  • Vitamin deficiency can impair immune cell function and cytokine production.

Discussion:

  • Vitamin D deficiency is linked to increased susceptibility to infections and inflammatory conditions, impacting Treg function and IL-10 production.
  • Vitamin A influences inflammatory responses and tissue repair, modulating cytokines via TGF-beta.
  • Vitamin E affects naive T cell function and can inhibit inflammatory mediators like prostaglandins.

Key Insights:

  • Specific vitamins (A, D, E) differentially regulate immune and inflammatory pathways.
  • Restoring vitamin levels may enhance cellular cytokine production and immune function.
  • The precise impact of vitamin malnutrition on cytokine response requires further elucidation.

Outlook:

  • Further research into vitamin-specific immunomodulation can inform therapeutic strategies.
  • Investigating the role of vitamins in chronic inflammatory diseases is warranted.
  • Targeted vitamin supplementation may offer protective benefits against infectious and inflammatory diseases.