Frequencies of HPRT mutants and micronuclei in lymphocytes of cancer patients under chemotherapy: a prospective study. 1994

A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
MGC-Department of Radiation Genetics and Chemical Mutagenesis, State University of Leiden, The Netherlands.

Fifteen cancer patients, including 10 testicular carcinoma patients, were treated with several types of combination chemotherapy. Blood samples were collected before, during and after chemotherapy. Subsequently, lymphocytes were analyzed for frequencies of HPRT mutants (MF) and micronuclei (MNF). Significantly elevated MFs were detected in eight patients. Mean expression time (+/- SD) for mutations was 98 +/- 54 days (range: 42-172 days). In some patients, enhanced MFs persisted for a period of 430-490 days after cessation of chemotherapy. In five patients MNFs were increased 2-6-fold and the enhancement was fairly persistent. Ifosfamide and cyclophosphamide appeared to be the most mutagenic and clastogenic constituents of the chemotherapy, while evidence for adverse effects of adriamycin, 4-epi-adriamycin and bleomycin was equivocal. Results indicate that the clinical use of mutagenic drugs must be weighed against the risks of persistent genetic damage and secondary malignancies in cured patients and their potential offspring. Further studies are necessary to determine the true risks and incidence of such abnormalities following chemotherapy for curable forms of cancer.

UI MeSH Term Description Entries
D007041 Hypoxanthine Phosphoribosyltransferase An enzyme that catalyzes the conversion of 5-phosphoribosyl-1-pyrophosphate and hypoxanthine, guanine, or MERCAPTOPURINE to the corresponding 5'-mononucleotides and pyrophosphate. The enzyme is important in purine biosynthesis as well as central nervous system functions. Complete lack of enzyme activity is associated with the LESCH-NYHAN SYNDROME, while partial deficiency results in overproduction of uric acid. EC 2.4.2.8. Guanine Phosphoribosyltransferase,HPRT,Hypoxanthine-Guanine Phosphoribosyltransferase,IMP Pyrophosphorylase,HGPRT,HPRTase,Hypoxanthine Guanine Phosphoribosyltransferase,Phosphoribosyltransferase, Guanine,Phosphoribosyltransferase, Hypoxanthine,Phosphoribosyltransferase, Hypoxanthine-Guanine,Pyrophosphorylase, IMP
D008214 Lymphocytes White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T or B (with subpopulations of each), or NATURAL KILLER CELLS. Lymphoid Cells,Cell, Lymphoid,Cells, Lymphoid,Lymphocyte,Lymphoid Cell
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
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
D011446 Prospective Studies Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group. Prospective Study,Studies, Prospective,Study, Prospective
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D004249 DNA Damage Injuries to DNA that introduce deviations from its normal, intact structure and which may, if left unrepaired, result in a MUTATION or a block of DNA REPLICATION. These deviations may be caused by physical or chemical agents and occur by natural or unnatural, introduced circumstances. They include the introduction of illegitimate bases during replication or by deamination or other modification of bases; the loss of a base from the DNA backbone leaving an abasic site; single-strand breaks; double strand breaks; and intrastrand (PYRIMIDINE DIMERS) or interstrand crosslinking. Damage can often be repaired (DNA REPAIR). If the damage is extensive, it can induce APOPTOSIS. DNA Injury,DNA Lesion,DNA Lesions,Genotoxic Stress,Stress, Genotoxic,Injury, DNA,DNA Injuries
D005260 Female Females

Related Publications

A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
January 1991, Environmental and molecular mutagenesis,
A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
January 1992, Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology,
A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
August 1998, Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology,
A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
April 1995, Mutation research,
A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
August 1991, Mutation research,
A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
July 1998, Mutation research,
A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
January 1997, Environmental and molecular mutagenesis,
A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
January 1990, Progress in clinical and biological research,
A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
June 2019, Environmental and molecular mutagenesis,
A D Tates, and F J van Dam, and A T Natarajan, and A H Zwinderman, and S Osanto
September 1993, Mutation research,
Copied contents to your clipboard!