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On the carcinogenicity of cadmium by the oral route. 1992

J F Collins, and J P Brown, and P R Painter, and I S Jamall, and L A Zeise, and G V Alexeeff, and M J Wade, and D M Siegel, and J J Wong
Office of Environmental Health Hazard Assessment, California Environmental Protection Agency, Berkely 94704.

Cadmium and cadmium compounds are carcinogenic both by inhalation and by injection. For purposes of risk assessment, a prudent public health approach has been that, if a chemical has been demonstrated to be carcinogenic by one route, it should be considered carcinogenic by all routes. This policy has been questioned for several toxic metals including cadmium. After reviewing the literature on cadmium carcinogenicity and genotoxicity, we think that cadmium should be considered noncarcinogenic by the oral route. The bases for this decision included: (1) a database for genotoxicity of cadmium with more negative test results than positive results and with most positive results in in vitro tests, indicating that cadmium has limited genotoxicity; (2) some epidemiologic evidence of respiratory tract cancer and prostatic cancer in people occupationally exposed to airborne cadmium but no reliable evidence of gastrointestinal tract cancers in workers; and (3) a large dietary oncogenicity study in rats of cadmium chloride at several dose levels, including a maximally tolerated dose (50 ppm) in males, which showed no increase of tumors due to cadmium ingestion in all of the 19 tissues examined. The conclusion that an agent, which has been shown to be carcinogenic by one route of exposure, is not carcinogenic by a second route should be made only in the presence of robust data which indicate the lack of effect via the second route of exposure.

UI MeSH Term Description Entries
D008297 Male Males
D009369 Neoplasms New abnormal growth of tissue. Malignant neoplasms show a greater degree of anaplasia and have the properties of invasion and metastasis, compared to benign neoplasms. Benign Neoplasm,Cancer,Malignant Neoplasm,Tumor,Tumors,Benign Neoplasms,Malignancy,Malignant Neoplasms,Neoplasia,Neoplasm,Neoplasms, Benign,Cancers,Malignancies,Neoplasias,Neoplasm, Benign,Neoplasm, Malignant,Neoplasms, Malignant
D011634 Public Health Branch of medicine concerned with the prevention and control of disease and disability, and the promotion of physical and mental health of the population on the international, national, state, or municipal level. Community Health,Environment, Preventive Medicine & Public Health,Environment, Preventive Medicine and Public Health,Health, Community,Health, Public
D002104 Cadmium An element with atomic symbol Cd, atomic number 48, and atomic weight 112.41. It is a metal and ingestion will lead to CADMIUM POISONING.
D002273 Carcinogens Substances that increase the risk of NEOPLASMS in humans or animals. Both genotoxic chemicals, which affect DNA directly, and nongenotoxic chemicals, which induce neoplasms by other mechanism, are included. Carcinogen,Oncogen,Oncogens,Tumor Initiator,Tumor Initiators,Tumor Promoter,Tumor Promoters,Initiator, Tumor,Initiators, Tumor,Promoter, Tumor,Promoters, Tumor
D004782 Environmental Health The science of controlling or modifying those conditions, influences, or forces surrounding man which relate to promoting, establishing, and maintaining health. Environmental Health Science,Health, Environmental,Environmental Health Sciences,Environmental Healths,Health Science, Environmental,Health Sciences, Environmental,Healths, Environmental,Science, Environmental Health,Sciences, Environmental Health
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000284 Administration, Oral The giving of drugs, chemicals, or other substances by mouth. Drug Administration, Oral,Administration, Oral Drug,Oral Administration,Oral Drug Administration,Administrations, Oral,Administrations, Oral Drug,Drug Administrations, Oral,Oral Administrations,Oral Drug Administrations
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012307 Risk Factors An aspect of personal behavior or lifestyle, environmental exposure, inborn or inherited characteristic, which, based on epidemiological evidence, is known to be associated with a health-related condition considered important to prevent. Health Correlates,Risk Factor Scores,Risk Scores,Social Risk Factors,Population at Risk,Populations at Risk,Correlates, Health,Factor, Risk,Factor, Social Risk,Factors, Social Risk,Risk Factor,Risk Factor Score,Risk Factor, Social,Risk Factors, Social,Risk Score,Score, Risk,Score, Risk Factor,Social Risk Factor

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