biological effects of ionizing radiation

... anti-neoplastic effects of the combined treatment were mainly due to the effects of ionizing radiation (Figure 5C) Only when using a toxic concentration of ErPC3 (50µM), the combination of drug treatment ... down-regulation of p-Akt may be required for the anti-neoplastic action of small molecule inhibitors of the PI3K/Akt pathway in prostate cancer cells Combined effects of ErPC3 and ionizing radiation ... Results Antineoplastic efficacy of ionizing radiation and ErPC3 in prostate cancer cell lines In a first step, the anti-neoplastic effects of ErPC3 and ionizing radiation alone were analyzed in...

Ngày tải lên: 09/08/2014, 09:20

... a-peptides (oligomers of a-amino acids) has recently been applied to the syntheses of linear tetrapeptides of somatostatin [20] and of cyclic tetrapeptide and pentapeptide analogues of the RGD sequence ... addition of a backbone methylene group could have minor effects on the overall conformation and biological activity of the peptide Thus, SP was used as a model peptide to analyse the structural and biological ... structures of the b-amino acids that best fit are shown in Fig They all correspond to gauche(+) values of the h angle The methyl group of b2-HAla occupies a position close to that of CH2b of Pro or...

Ngày tải lên: 08/03/2014, 08:20

... development of brain, skull and extremities 10 11 12 13 14 15 16 17 18 References Beir, V Health effects of exposure to low levels of ionizing radiation Biological effects of ionizing radiations ... of thoracic vertebrae Absence of ribs Fusion of ribs Bifurcation of ribs Shortening of ribs Displasia of sternebrae Missing of sternebrae Hypoplasia of sternebrae Curvature of tibia Absence of ... effect of selenium against ionizing radiation- induced malformations in mice Acta Radiol Oncol 1985, 24, 267-271 Committee on the biological effects of radiation The effects on populations of exposure...

Ngày tải lên: 07/08/2014, 14:23

... V Health effects of exposure to low levels of ionizing radiation Biological effects of ionizing radiations Washington, National Academy Press, 1990 Brent, R D The effects of ionizing radiation, ... Fusion of thoracic vertebrae Absence of ribs Fusion of ribs Wavy ribs Hypoplasia of ribs Displasia of sternebrae Missing of sternebrae Hypoplasia of sternebrae Curvature of tibia Absence of metatarsal ... Radiol Oncol 1985, 24, 267-271 Committee on the biological effects of radiation The effects on populations of exposure to low levels of ionizing radiation, p 480, National Academy Press, Washington,...

Ngày tải lên: 07/08/2014, 15:20

... ecosystemic effects and the ecological role of pollutants is accumulation of knowledge of the biological effects of these substances on particular species 1.3 Biological Effects of Substances ... 1:41 AM BIOLOGICAL EFFECTS OF SURFACTANTS expansion and improvement of the arsenal of biotesting methods (Filenko 1988; Flerov 1989), as well as the need for more detailed studies of the biological ... Friday, November 11, 2005 1:41 AM BIOLOGICAL EFFECTS OF SURFACTANTS The problems of assessing the biological activity of substances are related to many aspects of ecotoxicology (Dmitrieva 1976;...

Ngày tải lên: 11/08/2014, 17:21

... field of water quality studies (Unified methods for water quality studies Part Methods of Biological Analysis of Waters, ed by M Gubachek, Moscow, 1975) They are used in the arsenal of methods of ... The group of methods for estimating the biological activity of substances and pollution of aqueous medium by their effect on the elongation of preincubated seedlings When the effect of a tested ... group of methods for estimating the biological activity of substances and pollution of aqueous medium by their effect on the mean length of seedlings Some substances can slow down elongation of...

Ngày tải lên: 11/08/2014, 17:21

... influence of surfactants both under conditions of laboratory cultivation and in the process of biological purification of sewage waters The authors observed high titers of virulent particles of © ... Wednesday, November 9, 2005 12:45 AM BIOLOGICAL EFFECTS OF SURFACTANTS 105 Table 4.9 Change of the share of germinating seeds under the action of Triton X-100 on seeds of Fagopyrum esculentum (cultivar ... AM BIOLOGICAL EFFECTS OF SURFACTANTS 119 Table 4.29 Effect of TX100 on the efficiency of removal (EER) of Isochrysis galbana algal cells from water by Mytilus edulis mussels (the coefficients of...

Ngày tải lên: 11/08/2014, 17:21

... 1:42 AM BIOLOGICAL EFFECTS OF SURFACTANTS 173 Table 6.30 Effect of sublethal concentrations of AHC on Mytilus galloprovincialis Concentration of AHC, mg/l 25 Biological effects Inhibition of filtration ... degree of inhibition of the seedlings correspondingly increased The problems of the quantitative comparison of the results of biological testing of different chemicals on the same species of test ... effect on the efficiency of removal of suspension from water Table 6.21 Effect of detergent Lanza (20 mg/l) on the change of OD550 of a suspension of S cerevisiae in the course of its filtration by...

Ngày tải lên: 11/08/2014, 17:21

... role of the processes related to water filtration: the processes of formation of certain transparency of water, which is important for the penetration of UV radiation and realization of the biological ... November 10, 2005 8:52 PM BIOLOGICAL EFFECTS OF SURFACTANTS 189 1989, 1990) using the method of delayed fluorescence tested in studies of the biological effects of many pollutants (Matorin 1993) ... abundance, rates of growth, and nutrition of hydrobionts (Monakov 1998), and rates of excretion of pellets of faeces and pseudofaeces (Palaski and Booth 1995), and changes in the ratio of species in...

Ngày tải lên: 11/08/2014, 17:21

... part of ATP synthase not change in the presence or absence of D2O [14] However, the kinetics of F0 rotation in D2O were not examined Biological effects of deuteronation The dissociation of a ... is a part of the "rotor" In E coli, there is an aspartic acid residue in the middle of the second helix of subunit c Subunit a of F0 binds to the outside of the rotor and forms part of the "stator" ... the stator charge of Arg210 on subunit a A temporary stutter of the rotor is expected during the passage of deuteron *The ratio of deuterons (D+) to protons (H+) is ~1:15000 Page of (page number...

Ngày tải lên: 13/08/2014, 16:21

... screens) - Ionizing effect (deep) Nuclear (natural / power plants) – Ionizing effect, radiation hazard is deeper and risk of cancer) • Gamma ray (radioactive process) - Ionizing effect (risk of mutation ... power absorbed by tissue IT IS NON IONIZING • • • • • Infrared – Warming of skin surface, non ionizing Visible – Electron level changes, non ionizing Ultra violet – Ionizing but skin deep effect (Sunburn) ... RF energy in W / kg of body mass, taken over a volume of gram of tissue • Studies from the following agencies endorse it: – Academic (University of Oklahoma and others) – Professional (FCC, IEEE,...

Ngày tải lên: 05/12/2016, 17:16

... TARGETS OF PLANT BIOACTIVE COMPOUNDS A pharmacological reference guide to sites of action and biological effects GIDEON POLYA CRC P R E S S Boca Raton London New York Washington, D.C Library of Congress ... kill plant-consuming organisms 1.3 Description of the tables Most of the book is comprised of tables dedicated to specific targets or groups of targets of plant defensive compounds Target-related ... per litre) Of course, the quarltitation of such affinities depends upon the conditions of measurement and the source of the biochemical target entity However, it was felt that provision of such...

Ngày tải lên: 17/02/2014, 05:20

... Role of JNK in radiation- induced mitochondrial cell death M.-J Kim et al Fig Ionizing radiation induces expression of Fas and activation of caspases in human cervical cancer cells (A) Ionizing radiation- induced ... analysis (B) Effect of inhibition of MAPKs on radiation- induced loss of mitochondrial transmembrane potential HeLa cells were treated with 10 Gy of c -radiation in the presence of the MEK-specific ... expression of dominant-negative forms of JNK1, completely attenu2100 ated radiation- induced transcriptional upregulation of Fas and subsequent association of FADD with caspase-8 (Fig 5B) Moreover, radiation- induced...

Ngày tải lên: 07/03/2014, 05:20

... president of the National Academy of Sciences The National Academy of Engineering was established in 1964, under the charter of the National Academy of Sciences, as a parallel organization of outstanding ... organize a workshop of national and inter­ national experts to identify research needs and gaps in knowledge of biological effects and adverse health outcomes of exposure to radiofrequency (RF) energy ... number of other areas of toxicology in which knowledge is needed to support a complete evaluation of the possible health effects of RF exposure; these gaps are identified in the body of the report...

Ngày tải lên: 15/03/2014, 15:20

... useful irradiation sensitizer in gastric cancer therapy Guidelines of the NCCN on gastric cancer Figure Quantification of mRNA expression of different genes Analysis of mRNA expression of COX-2, ... the downregulation of gene expression caused by irradiation These results clearly suggested that treatment with propranolol significantly improved the biological effect of irradiation and down ... regulated expression of the Figure Dose-survival curves of BGC-823 and SGC-7901 cells after different doses of radiation with or without propranolol (50 μmol/L) 24 hr before irradiation Propranolol...

Ngày tải lên: 09/08/2014, 09:20

... the allograft tissue (see above Figure 2) Here, we have examined the effects of the combined treatment modality of ionizing radiation with the VEGFreceptor tyrosine kinase inhibitor PTK787 in ... (100 mg/kg) or hour prior to irradiation Immunohistochemical stainings of tumor sections were performed after tumor excision at day of treatment Detailed descriptions of the experimental procedures ... the level of the tumor microenvironment than on the level of the syngenic tumor cells Interestingly we observed the strongest difference between the two tumor models on the level of radiation...

Ngày tải lên: 09/08/2014, 09:20

... Gaber et al.: Effects of radiation therapy on tissue and serum concentrations of tumour associated trypsin inhibitor and their prognostic significance in rectal cancer patients Radiation Oncology ... al Radiation Oncology 2011, 6:100 http://www.ro-journal.com/content/6/1/100 Page of 10 Figure Prognostic value of TATI concentrations in tumour tissue and serum ROC curves showing estimations of ... further supports the potential utility of TATI as a prognostic biomarker in patients with cancer of the colon and rectum, irrespective of neoadjuvant RT Page of 10 Additional material Additional...

Ngày tải lên: 09/08/2014, 09:21

... absorption of energy begins to approach that of the IR radiation The observed effects of radiofrequency radiation on biological systems seem to depend more on a differential rate of energy deposition ... enhanced biological responses have been elicited within narrow bands of incident power and radiation frequency What is often overlooked in any description of the biological effects of microwave radiation ... injury to rabbit eyes LASER RADIATION Sources and Uses of Laser Radiation The rate of development and manufacture of devices and systems based on stimulated emission of radiation has been truly...

Ngày tải lên: 10/08/2014, 20:20

... Furthermore, consumption of crude oil has also increased, with the average rate of increase of 6% per year in the past decades Part of this increase is the result of the growing use of motor vehicles, ... many of these chemicals, particularly over long periods of time at low exposure levels, is largely unknown One of the most widely known episodes related to disposal of hazardous wastes is that of ... will reach more than 80% of U.S output by 2025.5 An often-debated question is the impact of increased CO2 levels on vegetation Some laboratory studies indicate that the rise of CO2 levels in the...

Ngày tải lên: 11/08/2014, 13:22