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Pagina 1 a partire dal 35 risultati
Metabolic turnover of pyridine nucleotides in ascites cells of sarcoma Sa 180 and in the liver tissue of rats before and after ionizing radiation.
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Metabolic turnover of NADP+ labeled with 14C in the ribose moiety of their molecules was determined in the ascites cells of sarcoma Sa 180 and in the rat liver tissue. The half-lives of NAD+ and NADP+ in the Sa 180 sarcoma cells were 60 min (NAD+) and 90 min (NADP+) and 120 min (NADP+). Experiments
Enzyme changes induced in normal and malignant tissues with chemical agents. IV. Effect of alpha-peltatin on glucose utilization by sarcoma 37 and on the adenosinetriphosphatase, hexokinase, aldolase, and pyridine nucleotide levels of sarcoma 37.
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A comparison of the retardation of Sarcoma 180 by SK 1424, 3-Bis (beta-chloroethyl) aminomethyl-4-methoxymethyl-5-hydroxy-6-methyl-pyridine with that by HN2, Methylbis (beta-chloroethyl) amine.
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[Biosynthesis of pyridine nucleotides in Galliera sarcoma].
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Comparative carcinogenicity of alkylating agents: comparisons of a series of alkyl and aralkyl bromides of differing chemical reactivities as inducers of sarcoma at the site of a single injection in the rat.
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A series of alkylating and aralkylating bromides was used in a comparative study of chemical reactivity (using 4-(p-nitrobenzyl) pyridine as standard nucleophile), and carcinogenic activity (using single injections by the subcutaneous route in 6-week old female CB-hooded rats). Benzyl, ethyl,
Mononuclear platinum(II) complex with 2-phenylpyridine ligands showing high cytotoxicity against mouse sarcoma 180 cells acquiring high cisplatin resistance.
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Mouse sarcoma 180 cell with a 25-fold higher cisplatin (CDDP) resistance, termed S-180cisR, is newly established. S-180cisR cells grow quite slowly in the presence of CDDP with high concentration. This may show that S-180cisR cells modulate the cell cycle to acquire CDDP resistance. P-Glycoprotein
Preferential mammary carcinogenic effects of 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) in human c-Ha-ras proto-oncogene transgenic rats.
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In order to clarify the susceptibility of the Hras128 rat harboring copies of the human c-Ha-ras proto-oncogene to 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), Hras128 rats were intragastically treated with 100 mg/kg PhIP 8 times (females) or 80 mg/kg PhIP 10 times (males) over a 9-week
Inhibition of the RNA dependent DNA polymerase and the malignant transforming ability of Rous sarcoma virus by thiosemicarbazone-transition metal complexes.
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Several thiosemicarbazone-metal complexes inhibit the RNA dependent DNA polymerase and the transforming ability of Rous sarcoma virus. Some complexes are equally as active as the free ligand whereas the activity of others is greatly enhanced. The 2-formyl pyridine thiosemicarbazone copper (II)
PAK-104P, a pyridine analogue, reverses paclitaxel and doxorubicin resistance in cell lines and nude mice bearing xenografts that overexpress the multidrug resistance protein.
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Multidrug resistance (MDR) is considered multifactorial and has been associated with overexpression of the multidrug resistance protein (MRP). However, effective compounds for reversal of MRP-related MDR are limited. In the present study, the modulatory activity of the novel pyridine analogue
Synthesis of site-directed chelating agents II: 2-formyl-3-hydroxy-4,5-bis (hydroxymethyl)pyridine thiosemicarbazone.
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2-Formyl-3-hydroxy-4,5-bis(hydroxymethyl)pyridine thiosemicarbazone was synthesized in an attempt to direct the chelating potential of this agent to the active site of the zinc-requiring enzyme pyridoxal phosphokinase. Evaluation of the antineoplastic activity of this agent in the sarcoma 180 and
THE ISOLATION AND PARTIAL CHARACTERIZATION OF THE GLYCOLIPIDS OF BP8/C3H ASCITES-SARCOMA CELLS.
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1. The total lipid was extracted from BP8/C3H ascites-sarcoma cells with acetone, light petroleum, pyridine and chloroform-methanol successively. Each extract was treated with mild alkali. The alkali-stable lipids from the pyridine and chloroform-methanol extracts, which included the glycolipids,
Inactivation and inhibition of Rous sarcoma virus by copper-binding ligands: thiosemicarbazones, 8-hydroxyquinolines, and isonicotinic acid hydrazide.
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We have shown that three types of copper-binding ligands, thiosemicarbazones, 8-hydroxyquinolines, and isonicotinic acid hydrazide and their copper complexes, inactivate the transforming ability of RSV and inhibit its RNA-dependent DNA polymerases. Three other compounds, 2-pyridine
Dependence of fibroblast autofluorescence properties on normal and transformed conditions. Role of the metabolic activity.
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The dependence of autofluorescence properties on the metabolic and functional engagement and on the transformation condition was studied on single cells. Normal Galliera rat fibroblasts at low subculture passage (cell strain), at high subculture passage (stabilized cell line), and transformed cell
The influence of Propionibacterium acnes (Corynebacterium parvum) fractions on immune response in vivo.
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Bacterin of Propionibacterium acnes (Corynebacterium parvum), its cellular fractions (lipids, fractions obtained by mechanical disruption and differential centrifugation, by phenol-water and pyridine extractions), and a polysaccharide from culture filtrate were prepared and tested in mice. The
Alkylating activity in serum, urine, and CSF following high-dose ifosfamide in children.
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The pharmacokinetics of alkylating activity were studied in 17 children treated i.v. with ifosfamide (IF) at 3 g/m2 as a 1-h infusion for 2 consecutive days every 3 weeks, with mesna as a uroprotector. Two patients were treated for a newly diagnosed rhabdomyosarcoma according to the current SIOP
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