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Kaplan Qbank USMLE



Author6 Posts
  #1

I'm curious about this I-cell which is a part of intestinal enteroendocrine cell and secretes CCK.So is the same cell with these implied in I-cell disease?
Thank you.

  #2

NO! i think they r different.
I CELLS as u have mentioned is a part of the enteric endocrine system, :arrow: present in the upper intestine/duodenum, and is responsible for secretion of CCK.just like S CELLS secrete SECRETIN and G CELLS secrete GASTRIN.
I CELL DISEASE is an inherited lysosomal storage disorder . One unique feature of this disease when first described was the presence of phase-dense intracytoplasmic inclusions in the fibroblasts of patients. These cells were termed inclusion cells, or I-cells; thus, the disease was designated I-cell disease :arrow: These are observed in cells of mesenchymal origin, especially fibroblasts.
i hope its a convincing explanation :roll:

  #3

thank you for your answer;it's something new for me.

  #4

MEANT U AGREE OR DISAGREE? :roll:

  #5

seems to be logical that "I" is from inclusion (that was new...)
I agree smiling face with you

  #6

An extra addition to I cell disease is also that its due to failure of addition of mannose 6 phospate to lysosome proteins, causing these enzymes to be secreted out the cell instaed of being targeted to lysosome.

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