National Cancer Institute Thesaurus

Last uploaded: February 23, 2024
Preferred Name

Samarium Sm-153

Synonyms

Samarium, Isotope of Mass 153

Samarium-153

SAMARIUM SM-153

samarium 153

Samarium Sm-153

153Sm

Sm-153

Definitions

A beta- and gamma-emitting isotope, with antineoplastic activity. Emitted by samarium Sm 153, beta particles directly damage cellular DNA and, by ionizing intracellular water to produce several types of cytotoxic free radicals and superoxides, indirectly damage intracellular biological macromolecules, resulting in tumor cell death. Samarium Sm 153 also emits gamma-photons that can be detected for external imaging.

ID

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C1809

ALT_DEFINITION

A radioactive substance used in the treatment of bone cancer and bone metastases (cancers that have spread from the original tumor to the bone). Samarium 153 is a radioactive form of the element samarium. It collects in bone, where it releases radiation that may kill cancer cells. It is a type of radioisotope.

CAS_Registry

15766-00-4

Chemical_Formula

Sm

code

C1809

Concept_In_Subset

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C201600

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C63923

Contributing_Source

FDA

HemOnc

DEFINITION

A beta- and gamma-emitting isotope, with antineoplastic activity. Emitted by samarium Sm 153, beta particles directly damage cellular DNA and, by ionizing intracellular water to produce several types of cytotoxic free radicals and superoxides, indirectly damage intracellular biological macromolecules, resulting in tumor cell death. Samarium Sm 153 also emits gamma-photons that can be detected for external imaging.

FDA_UNII_Code

6Q1KA41UWM

FULL_SYN

Samarium, Isotope of Mass 153

Samarium-153

SAMARIUM SM-153

samarium 153

Samarium Sm-153

153Sm

Sm-153

label

Samarium Sm-153

Legacy Concept Name

Samarium_153

Preferred_Name

Samarium Sm-153

prefixIRI

Thesaurus:C1809

Semantic_Type

Element, Ion, or Isotope

Indicator, Reagent, or Diagnostic Aid

UMLS_CUI

C0677942

subClassOf

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C799

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