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Erythema nodusum

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Home | Pathology | Oncology

Carcinogenesis

Carcinogenesis

  1. Remote carcinogen
    • Precursor of carcinogenic agent
  2. Proximate carcinogen
    • Metabolite of remote carcinogen with potential
    • Needs further modification into ultimate
  3. Ultimate carcinogen
    • DNA interaction causes cancer

B-naphthylamine - ingested and absorbed from small bowel, metabolised in liver, made soluble, excreted by kidney and causes cancer in bladder (after being gluconurated by bladder epithelium).

 

Initiator: Alters DNA making it abnormal

Promoter: Leads to altered gene expression (eg hormones)

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