Participation of MAP Kinase p38 and IkB Kinase in Chromium (VI)-Induced NF-kB and AP-1 Activation

Details

• Personal Author:
  Castranova, Vincent ; Chen F ; Ding M ; Leonard, Stephen S. ; Lu Y ; Shi X ; Vallyathan V
• Description:
  Epidemiological studies demonstrate that environmental and occupational exposure of chromium(VI) [Cr(VI)] or Cr(VI)-containing particles can cause a number of human diseases, including inflammation and cancer. The biological mechanisms responsible for the initiation and progression of diseases resulting from exposure to Cr(VI) are not fully understood. The present studies evaluated the ability of Cr(IV) to induce activation of NF-kappaB and AP-1, two important transcription factors governing the expression of many early response genes involved in inflammation and carcinogenesis. The activation of NF-kappaB and AP-1 by Cr(IV) was dose dependent. Aspirin, a well-established antioxidant, substantially inhibited Cr(VI)-induced activation of both NF-kappaB and AP-1. SB202190, a specific inhibitor for p38, attenuated AP-1 activation induced by Cr(IV), whereas PD98059, a specific inhibitor for Erk, exhibited no effect on Cr(IV)-induced AP-1 activation. Blockage of NF-kappaB signaling pathway by a transient transfection of a dominant negative expressing vector for IkappaB kinase beta resulted in inhibition of Cr(IV)-induced NF-kappaB, but not AP-1 activation. These data suggest that the activation of AP-1 or NF-kappaB by Cr(IV) is through the involvement of MAP kinase or IKK pathway, respectively. [Description provided by NIOSH]
• Subjects:
  Antioxidants Carcinogens Chromium Epidemiology Genetics Neoplasms Occupational Exposure Occupational Health Safety
• Keywords:
  AP-1 Author Keywords: Cr VI Biological Factors Cancer Carcinogenesis Carcinogenicity Chromium Compounds Diseases Genes MAP Kinase NF-KB Occupational Exposure

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• ISSN:
  0731-8898
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  HELD - Health Effects Laboratory Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  231-238
• Volume:
  19
• Issue:
  3
• NIOSHTIC Number:
  nn:20020639
• Citation:
  J Environ Pathol Toxicol Oncol 2000 Jul-Sep; 19(3):231-238
• Contact Point Address:
  The Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505
• Email:
  lfd3@cdc.gov
• CAS Registry Number:
  Chromium (CAS RN 7440-47-3)
• Federal Fiscal Year:
  2000
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Environmental Pathology, Toxicology, and Oncology
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:8eb8091ea27b9f8ba5f6dcf266b8c1f43c494f0edd77f539d6b3230dbd650517b0ff4871b121701c8cbcdb5b1d345799220da171f30ea9164c2cab7b83c0329f
• Download URL:
  https://stacks.cdc.gov/view/cdc/198324/cdc_198324_DS1.pdf
• File Type:
  [PDF - 377.61 KB ]