Page last updated: 2024-11-05

californium

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Description

Californium: A man-made radioactive actinide with atomic symbol Cf, atomic number 98, and atomic weight 251. Its valence can be +2 or +3. Californium has medical use as a radiation source for radiotherapy. [Medical Subject Headings (MeSH), National Library of Medicine, extracted Dec-2023]

Cross-References

ID SourceID
PubMed CID23997
CHEBI ID33392
MeSH IDM0003203

Synonyms (39)

Synonym
CF ,
californium
californio
californium atom
98cf
7440-71-3
kalifornium
CHEBI:33392
22541-43-1
californium, ion(cf3 )
californium, radioactive
hsdb 7386
unii-975x05h15a
975x05h15a ,
californium [mi]
californium, elemental
californium [hsdb]
californium ion
DTXSID00935722
DTXSID90930605
(~246~cf)californium
(~248~cf)californium
(~252~cf)californium
(~250~cf)californium
(~251~cf)californium
(~254~cf)californium
DTXSID10930627
DTXSID90934183
DTXSID90935751
DTXSID10935632
DTXSID40944732
(~249~cf)californium
DTXSID50934487
DTXSID40936293
(~253~cf)californium
(~244~cf)californium
Q1888
DTXSID00225392
2,4(1h,3h)-pyrimidinedione, 6-(fluoromethyl)-

Research Excerpts

Overview

California-252 is a man-made radionuclide (half-life 2-65 years) which emits a mixture of neutrons and gamma rays. Californium-252 promises to be an effective radium substitute in brachytherapy.

ExcerptReferenceRelevance
"Californium-252 is a neutron-emitting radioisotope used as a brachytherapy source for radioresistant tumors. "( Measured microdosimetric spectra and therapeutic potential of boron neutron capture enhancement of 252Cf brachytherapy.
Burmeister, J; Kota, C; Maughan, RL, 2005
)
1.77
"Californium-252 is a man-made radionuclide (half-life 2-65 years) which emits a mixture of neutrons and gamma rays. "( The potential of californium-252 in radiotherapy. Preclinical measurements in physics and radiobiology.
Hall, EJ; Rossi, H, 1975
)
2.04
"Californium-252 promises to be an effective radium substitute in brachytherapy. "( Californium-252 line sources: experimental verification of depth dose data using NTA films and dosage tables based on Paterson and Parker rules.
Gopalakrishnan, AK; Iyer, PS; Venkataraman, G, 1976
)
3.14
"Californium-252 (Cf) is a fast neutron-emitting radioisotope currently being tested in trials of neutron brachytherapy (NT)."( Phase I-II clinical trial of Californium-252. Treatment of stage IB carcinoma of the cervix.
Beach, JL; Donaldson, E; Gallion, H; Kryscio, R; Maruyama, Y; Rowley, K; VanNagell, JR; Yoneda, J, 1987
)
1.29

Effects

ExcerptReferenceRelevance
"Californium-252 has a relatively short half-life of 2.645 y; consequently, it must be replaced frequently to produce an adequate neutron flux for calibration."( Development of a Fission Neutron Spectrum from a D-T Neutron Generator by Spectrum Subtraction Technique.
Casanova, KM; Scates, WW; Schrader, BJ, 2021
)
1.34
"Californium-252 has a relatively short half-life of 2.645 y; consequently, it must be replaced frequently to produce an adequate neutron flux for calibration."( Development of a Fission Neutron Spectrum from a D-T Neutron Generator by Spectrum Subtraction Technique.
Casanova, KM; Scates, WW; Schrader, BJ, 2021
)
1.34

Treatment

ExcerptReferenceRelevance
"Treatment with californium-252 ((252)Cf), as a source of gamma/neutron radiation in brachytherapy, provides properties and new treatment modalities that help to overcome this factor."( Californium-252 (252Cf) versus conventional gamma radiation in the brachytherapy of advanced cervical carcinoma long-term treatment results of a randomized study.
Ptácková, B; Strnad, V; Tacev, T, 2003
)
2.1

Toxicity

ExcerptReferenceRelevance
" The design, blocking system and emergency reset of the sources provide for safe work on the ANET-W apparatus."( [Radiation safety during work on the ANET-V therapeutic apparatus with 252Cf sources].
Chekhonadskiĭ, VN; Drygin, VN; Elisiutin, GP; Komar, VIa; Vaĭnberg, MSh, 1985
)
0.27
" As a consequence, toxic effects have been reported for human but not for rat amylin."( Mercury contamination of rat amylin mimics vasoactivity and cytotoxic effects.
Barth, P; Feddersen, CO; Golpon, HA; Jungclas, H; Püchner, A; Schmidt, L; Welte, T; Wichert, PV, 2003
)
0.32
" The paper suggests a relatively safe body chemical composition analyser (BCCA) machine that uses a spherical Pb shield, enclosing the neutron source."( Improving the safety of a body composition analyser based on the PGNAA method.
Izadi-Najafabadi, R; Miri-Hakimabad, H; Panjeh, H; Vejdani-Noghreiyan, A, 2007
)
0.34

Compound-Compound Interactions

The aim of the study was to observe the curative effects and complications of external irradiation combined with californium-252 (252Cf) neutron intraluminal brachytherapy.

ExcerptReferenceRelevance
"A comparative study was made of tumor induction in rats by 45Ca and 90Sr administered separately and in a combination with 131I."( [Blastomogenic effect in rats exposed to separate uptake of osteotropic radionuclides and in combination with 131I].
Il'in, BN; Zhorno, LIa,
)
0.13
" The aim of the study was to observe the curative effects and complications of external irradiation combined with californium-252 (252Cf) neutron intraluminal brachytherapy for treatment of cervical carcinoma."( Clinical report on external irradiation combined with californium-252 neutron intraluminal brachytherapy for cervical carcinoma treatment.
Geng, X; Sun, J; Wang, K; Zhang, W; Zhao, H,
)
0.59
"To observe, by retrospective analysis, the curative effects and complications due to californium-252 (252Cf) neutron intracavitary brachytherapy (ICBT) combined with external-beam radiotherapy (EBRT) in the treatment of cervical cancer."( Californium-252 brachytherapy combined with external-beam radiotherapy for cervical cancer: long-term treatment results.
Dai, N; Feng, Y; Gu, XQ; Lei, X; Li, Z; Qian, CY; Qing, Y; Shan, JL; Tang, C; Wang, D; Xiong, YL; Yang, ZZ; Zhao, KW; Zhong, ZY; Zhou, Q, 2011
)
2.04
"This article presents a dosimetric investigation of boron neutron capture therapy (BNCT) combined with (252)Cf brachytherapy for brain tumour control."( Brain tumour and infiltrations dosimetry of boron neutron capture therapy combined with 252Cf brachytherapy.
Brandão, SF; Campos, TP, 2012
)
0.38
"To study the efficacy of low-dose-rate californium-252 ((252)Cf) neutron intracavitary afterloading radiotherapy (RT) combined with external pelvic RT for treatment of cervical cancer."( Low-dose-rate californium-252 neutron intracavitary afterloading radiotherapy combined with conformal radiotherapy for treatment of cervical cancer.
Lin, S; Liu, JR; Pan, SD; Xu, HD; Yue, JH; Zhang, M, 2012
)
1.01
"Low-dose-rate (252)Cf neutron RT combined with external pelvic RT is effective for treating cervical cancer, with a low incidence of complications."( Low-dose-rate californium-252 neutron intracavitary afterloading radiotherapy combined with conformal radiotherapy for treatment of cervical cancer.
Lin, S; Liu, JR; Pan, SD; Xu, HD; Yue, JH; Zhang, M, 2012
)
0.74
"The aim of this study was to retrospectively observe and analyze the long-term treatment outcomes for a total of 952 esophageal cancer patients who were treated with (252)Cf neutron brachytherapy (NBT) in combination with external beam radiotherapy (EBRT)."( Californium-252 neutron brachytherapy combined with external beam radiotherapy for esophageal cancer: long-term treatment results.
Jia, X; Liu, B; Liu, H; Wan, X; Wang, CK; Wang, Q,
)
1.57
"From November 2001 to March 2012, 952 patients with esophageal cancer underwent NBT in combination with EBRT."( Californium-252 neutron brachytherapy combined with external beam radiotherapy for esophageal cancer: long-term treatment results.
Jia, X; Liu, B; Liu, H; Wan, X; Wang, CK; Wang, Q,
)
1.57
" These results compare favorably with the results obtained from conventional high-dose rate in combination with EBRT."( Californium-252 neutron brachytherapy combined with external beam radiotherapy for esophageal cancer: long-term treatment results.
Jia, X; Liu, B; Liu, H; Wan, X; Wang, CK; Wang, Q,
)
1.57
"The clinical data show that NBT in combination with EBRT produced favorable local control and long-term survival rates for patients with esophageal cancer and that the side effects are tolerable."( Californium-252 neutron brachytherapy combined with external beam radiotherapy for esophageal cancer: long-term treatment results.
Jia, X; Liu, B; Liu, H; Wan, X; Wang, CK; Wang, Q,
)
1.57
"Dosimetric evaluations were performed on three protocol set-ups: (252)Cf brachytherapy combined with BNCT (Cf-BNCT); Cf-BNCT with a balloon catheter filled with light water (LWB) and the same set-up with heavy water (HWB)."( Intracavitary moderator balloon combined with (252)Cf brachytherapy and boron neutron capture therapy, improving dosimetry in brain tumour and infiltrations.
Brandão, SF; Campos, TP, 2015
)
0.42
"We conducted a retrospective analysis on 884 patients who were diagnosed with esophageal squamous cell carcinoma (ESCC) and treated with either the neutron brachytherapy in combination with external beam radiotherapy (NBT + EBRT) or 3-dimensional conformal radiation therapy (3D-CRT) to determine the differences in efficacy and morbidity between the two treatment groups."( A retrospective study of californium-252 neutron brachytherapy combined with EBRT versus 3D-CRT in the treatment of esophageal squamous cell cancer.
Jia, X; Lang, J; Li, T; Liu, B; Liu, H; Wang, CK; Wang, J; Wang, Q, 2015
)
0.72
"The aim of this study was to determine the efficacy of 252Californium neutron intracavitary brachytherapy using a two-channel Y applicator combined with external beam radiotherapy for the treatment of endometrial cancer."( Clinical assessment of 252Californium neutron intracavitary brachytherapy using a two-channel Y applicator combined with external beam radiotherapy for endometrial cancer.
Chen, S; Lei, X; Tang, C; Xiong, YL; Xu, WJ; Zhao, KW; Zhou, Q, 2016
)
0.98
"252Californium neutron intracavitary brachytherapy using a two-channel applicator combined with external beam radiotherapy was effective for treating endometrial cancer and the incidence of serious late complications related to this combination was within an acceptable range."( Clinical assessment of 252Californium neutron intracavitary brachytherapy using a two-channel Y applicator combined with external beam radiotherapy for endometrial cancer.
Chen, S; Lei, X; Tang, C; Xiong, YL; Xu, WJ; Zhao, KW; Zhou, Q, 2016
)
1.36
"The aim of this work was to compare the long-term curative effects and complications of patients diagnosed with cervical cancer International Federation of Gynecology and Obstetrics IIIB (n = 430) as treated with Californium-252 ((252)Cf) or cobalt-60 ((60)Co) intracavitary brachytherapy (ICBT) combined with external beam radiotherapy (EBRT)."( Long-term results for Stage IIIB cervical cancer patients receiving external beam radiotherapy combined with either HDR (252)Cf or HDR (60)Co intracavitary brachytherapy.
Atkocius, V; Janulionis, E; Rivard, MJ; Samerdokiene, V; Ulinskas, K; Valuckas, KP,
)
0.32
"Cervical cancer cases with a history of treatment with (252)Cf or (60)Co ICBT combined with EBRT were selected from the Lithuanian National Cancer Institute database."( Long-term results for Stage IIIB cervical cancer patients receiving external beam radiotherapy combined with either HDR (252)Cf or HDR (60)Co intracavitary brachytherapy.
Atkocius, V; Janulionis, E; Rivard, MJ; Samerdokiene, V; Ulinskas, K; Valuckas, KP,
)
0.13
" The aim of this study was to retrospectively assess the long-term treatment outcomes of patients with cervical cancer who were treated with californium-252 neutron brachytherapy combined with external-beam radiotherapy plus concurrent chemotherapy."( Californium-252 neutron brachytherapy combined with external pelvic radiotherapy plus concurrent chemotherapy for cervical cancer: a retrospective clinical study.
Chen, J; Hou, B; Huang, ZP; Li, F; Liu, X; Liu, Y; Qian, S; Song, N; Tian, YH; Wang, LG; Ye, L; Zhou, T, 2017
)
2.1
"We retrospectively analyzed the medical records of 150 patients with primary stages IB-IVB cervical cancer who received neutron brachytherapy combined with external-beam radiotherapy concurrently with cisplatin chemotherapy."( Californium-252 neutron brachytherapy combined with external pelvic radiotherapy plus concurrent chemotherapy for cervical cancer: a retrospective clinical study.
Chen, J; Hou, B; Huang, ZP; Li, F; Liu, X; Liu, Y; Qian, S; Song, N; Tian, YH; Wang, LG; Ye, L; Zhou, T, 2017
)
1.9
"For patients with cervical cancer, neutron brachytherapy combined with external-beam radiotherapy plus concurrent chemotherapy produces a rapid response and greatly improves local control and long-term survival rates with tolerable adverse effects."( Californium-252 neutron brachytherapy combined with external pelvic radiotherapy plus concurrent chemotherapy for cervical cancer: a retrospective clinical study.
Chen, J; Hou, B; Huang, ZP; Li, F; Liu, X; Liu, Y; Qian, S; Song, N; Tian, YH; Wang, LG; Ye, L; Zhou, T, 2017
)
1.9

Dosage Studied

ExcerptRelevanceReference
" Preliminary calculations indicate that a 1-3-mg source provides adequate count rates for statistical accuracy with a bone marrow dosage acceptable for human patients and normal subjects."( Feasibility study: in vivo neutron activation for regional measurement of calcium using californium 252.
Evans, HJ; Johnson, PC; LeBlanc, AD,
)
0.35
" Dose-response curves were obtained for each type of radiation and the Do was determined."( The r.b.e. of different energy neutrons as measured by the heamatopoietic spleen-colony technique.
Bond, VP; Carsten, AL; Thompson, K, 1976
)
0.26
"Clinical data of the University of Kentucky trial using californium (252Cf), or caesium (137Cs), are reviewed for dose-response based on the endpoint of tumour eradication estimated from hysterectomy specimens obtained 4-6 weeks after preoperative irradiation."( Clinical study of relative biological effectiveness for cervical carcinoma treated by 252Cf neutrons and assessed by histological tumour eradication.
Feola, JM; Maruyama, Y; Powell, D; van Nagell, JR; Wierzbicki, J; Yoneda, J, 1990
)
0.53
" A variety of doses, schedules and methods for brachytherapy was tested during this period, and a dose-response relationship for tumor eradication studied."( Cure of cervical cancer using 252Cf neutron brachytherapy.
Donaldson, ES; Gallion, HH; Higgins, R; Kryscio, RJ; Maruyama, Y; van Nagell, JR; Yoneda, J, 1990
)
0.28
" Specimens were more frequently cleared of tumor (up to 100% at appropriate dose) and showed a dose-response relationship, both by nominal dose and by TDF adjusted analysis of dose, dose-rate, number of sessions, and overall time."( Evaluation of time-dose and fractionation for 252Cf neutrons in preoperative bulky/barrel-cervix carcinoma radiotherapy.
Maruyama, Y; Wierzbicki, J, 1990
)
0.28
" Compared with results obtained using 60Co gamma-rays, the ratio of the initial slope of each dose-response curve was 4-5 for cell killing, and more than 11 for mutagenesis."( Reversed dose-rate effect and RBE of 252-californium radiation in the induction of 6-thioguanine-resistant mutations in mouse L5178Y cells.
Nakamura, N; Sawada, S, 1988
)
0.54
" Sigmoid dose-response curves were observed for the fraction of maximum enlargement achieved after acute 60Co."( Radiosensitivity of C. parvum-stimulated spleen to acute 60Co and low dose rate 137Cs and 252Cf irradiation.
Feola, JM; Magura, C; Maruyama, Y, 1984
)
0.27
" Similar dose-response relationships were observed for acute 60Co or LDR Cs-137 radiations, but these required much larger doses to produce the same effect."( RBE of CF-252 neutrons by mouse testes weight loss.
Beach, JL; Feola, JM; Hwang, HN; Maruyama, Y, 1984
)
0.27
" The comparison of dose-response curves and its alteration, due to changes in the cells and plants environment during and after irradiation, explains the observed differences."( Relative biological efficiency for the induction of various gene mutations in normal and enriched with 10B Tradescantia cells by neutrons from 252Cf source.
Cebulska-Wasilewska, A; Kim, JK; Schneider, K, 2001
)
0.31
[information is derived through text-mining from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Drug Classes (2)

ClassDescription
actinoid atom
f-block element atom
[compound class information is derived from Chemical Entities of Biological Interest (ChEBI), Hastings J, Owen G, Dekker A, Ennis M, Kale N, Muthukrishnan V, Turner S, Swainston N, Mendes P, Steinbeck C. (2016). ChEBI in 2016: Improved services and an expanding collection of metabolites. Nucleic Acids Res]

Research

Studies (530)

TimeframeStudies, This Drug (%)All Drugs %
pre-1990330 (62.26)18.7374
1990's82 (15.47)18.2507
2000's46 (8.68)29.6817
2010's59 (11.13)24.3611
2020's13 (2.45)2.80
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]

Market Indicators

Research Demand Index: 90.95

According to the monthly volume, diversity, and competition of internet searches for this compound, as well the volume and growth of publications, there is estimated to be very strong demand-to-supply ratio for research on this compound.

MetricThis Compound (vs All)
Research Demand Index90.95 (24.57)
Research Supply Index6.41 (2.92)
Research Growth Index4.41 (4.65)
Search Engine Demand Index163.78 (26.88)
Search Engine Supply Index2.00 (0.95)

This Compound (90.95)

All Compounds (24.57)

Study Types

Publication TypeThis drug (%)All Drugs (%)
Trials31 (5.38%)5.53%
Reviews17 (2.95%)6.00%
Case Studies19 (3.30%)4.05%
Observational0 (0.00%)0.25%
Other509 (88.37%)84.16%
[information is prepared from research data collected from National Library of Medicine (NLM), extracted Dec-2023]