geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Genetic effects of induced in populations by the radioactive nuclear fission products of 235U. II. Prognostication of the genetic effectiveness of irradiation at low dose rates


, : Genetic effects of induced in populations by the radioactive nuclear fission products of 235U. II. Prognostication of the genetic effectiveness of irradiation at low dose rates. Genetika 14(4): 622-631

Experiments have been carried out on Chlorella, beans, wheat and developing loach eggs to study the dose-response relationship (dose-function of dose rate) with 90Sr, 90Y and 147Pm as the sources of beta-radiation. The yield of point mutations in Chlorella under 147Pm and that of chromosome aberrations in cells of bean roof and apical meristem tissue as well as in meiosis of wheat and bean cells irradiated by 90Sr- 90Y is proved to show degree dependence at a dose less than 1. It means that the dose which doubles the number of induced mutations is not constant and depends on the dose rate. Reverse relationship is shown between dose intensity and genetic effect per dose unit. The decrease in the yield of genetic damages in the range of dose rates analysed is supposed to be due to repair activation induced by ionizing radiations. In view of these results, consideration is given to the role of the level of spontaneous mutagenesis in estimation of the resolution of test systems. An increase in the level of the spontaneous mutational process is shown to increase the size of population samples which are ment, when analysed, to reveal statistically significant differences between the effect observed and the level of spontaneous mutagenesis. The possibility of application of the experimental results to the prediction of effects of ionizing radiations on natural animal and plant populations is considered.

US$29.90

PMID: 658666


Other references

Trehu, E.G.; Mier, J.W.; Dubois, J.S.; Sorce, D.; Klempner, M.S.; Epstein, M.; Dinarello, C.A.; Shapiro, L.; Kappler, K.; Ronayne, L.; Atkins, M.B., 1996: Phase I trial of interleukin 2 in combination with the soluble tumor necrosis factor receptor p75 IgG chimera. Our purpose was to determine the effective biological dose and/or maximum tolerated dose of recombinant human tumor necrosis factor receptor:IgG chimera (rhuTNFR:Fc; Immunex, Seattle, WA) in combination with interleukin 2 (IL-2) with regard to red...

Karabulut, H.; Karabulut, I.; Dağli, M.; Bayazit, Y.Ahmet.; Bilen, S.; Aydin, Y.; Güler, S.; Bayramoğlu, I., 2015: Evaluation of outer hair cell function and medial olivocochlear efferent system in patients with type II diabetes mellitus. This study was designed to investigate the function of outer hair cells and medial olivocochlear efferents in type II diabetes mellitus (DM). There were 50 patients with type II DM and 51 age- and sex-matched healthy controls included in the study...

Herrmann, M.; Tischendorf, S., 2000: Halictus pollinosus in Germany - a rediscovery after over 100 years Hymenoptera, Apidae? Halictus pollinosus in Deutschland - ein Wiederfund nach uber 100 Jahren Hymenoptera, Apidae?. Bembix. Januar; 13: 18-20

Dostal D.E.; Johnson J.A.; Langevin P.B., 1986: Responses of rabbit arterial rings to norepinephrine in renal prehypertensive plasma treated with angiotensin antagonists. Federation Proceedings 45(3): 302

Anonymous, 2011: Mesh-particle interpolation on CPUs/GPUs. Particle–mesh interpolations are fundamental operations for particle-in-cell codes, as implemented in vortex methods, plasma dynamics and electrostatics simulations. In these simulations, the mesh is used to solve the field equations and the...

Tritto, T.; Marks, M.J.; Paylor, R.; Collins, A.C., 2000: Differential behavioral effects of nicotine in the alpha7, beta2, and beta3 nicotinic receptor null mutant mice. We have initiated studies using the alpha7, beta2, and beta3 nicotinic receptor subunit null mutant mice to identify possible behavioral roles of these receptor subunits. Previous studies from our laboratory have demonstrated that acute nicotine i...

Swietlikowska, U., 1976: Influence of technology in feed production on feed quality. Internationale Zeitschrift der Landwirtschaft: 455-460

Adams John K.; Arvidson Raymond E., 1969: Thin sections of free grains using two mounting mediums. Geological Magazine 106(6): 598-599

McCarthy, J., 2010: Editorial comment. Nursing Ethics 17(1): 5-7

Kawano, H.; Kinoshita, M.; Kondo, A.; Yamada, Y.; Inoue, M., 2016: Torsades De Pointes Associated With Takotsubo Cardiomyopathy In An Anorexia Nervosa Patient During Emergence From General Anesthesia. Takotsubo cardiomyopathy, also known as stress-induced cardiomyopathy, is a disease in which the patient exhibits transient, reversible left ventricular dysfunction that is triggered by physical or emotional stress. Prolongation of QT interval, a...