Chloragogen cell

Chloragogen cells, also called y cells, are star-shaped cells in annelids involved in excretory functions and intermediary metabolism. They function similarly to the liver in vertebrates. Chloragogen tissue is most extensively studied in earthworms.[1]

Chloragogen cells are derived from the inner coelomic epithelium, and are present in the coelomic fluid of some annelids.[2] These cells have characteristic vesicular bulging due to their function in storing and transporting substances, and are yellow due to the presence of cytosolic granules known as chloragosomes.[3]

The most understood function of chloragogen tissue is its involvement in the excretory system. The cells accumulate and excrete nitrogenous wastes and silicates.[4] They are involved in the deamination of amino acids and synthesis of urea. They also store glycogen and neutralize toxins.[2]

References
  1. chloragogen cells
  2. Biology and Ecology of Earthworms, Volume 3, Clive A. Edwards, P.J. Bohlen, p.75
  3. Lysosomal acid hydrolases in the chloragogen cells of earthworms, Comparative Biochemistry and Physiology Part A: Physiology, Volume 45, A.T. Varute, N.K. More, Issue 2, p.607-635
  4. Nature of Chloragogen Granules. Nature 179, p.679–680.


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