What's the difference between cacodyl and dimethyl?
Cacodyl
Definition:
(n.) Alkarsin; a colorless, poisonous, arsenical liquid, As2(CH3)4, spontaneously inflammable and possessing an intensely disagreeable odor. It is the type of a series of compounds analogous to the nitrogen compounds called hydrazines.
Example Sentences:
(1) The results indicate that in 10(-3) M sodium cacodylate the binding constant of BAD is 1.8 x 10(3) M-1.
(2) Protein aggregation is dependent on the concentration of background electrolyte since in the range 10-150 mM sodium cacodylate alternative stabilisation of dimeric and trimeric complexes was observed by both NMR and analytical ultracentrifugation.
(3) Yeast cells were fixed for 20 min in cold 1% glutaraldehyde buffered with 50 mM TES buffer to pH 7.0 and then incubated for 80 min with 1.2 mM L-alanyl-L-proline-4-methoxy-2-naphthylamide (Ala-Pro-MNA) or Lys-Pro-MNA as cytochemical substrates plus 0.06% hexazonium p-rosaniline (HPR) buffered with 160 mM cacodylate to pH 7.0.
(4) The two-step method uses cationic cacodylate iron colloid which is substituted with Tween 20 at an OD460 nm = 0.5, followed by Perls' reaction with acid potassium ferrocyanide.
(5) It was noted that the microtubular structure, which could not be demonstrated even by alcian blue or cationic ferric hydroxide colloid stabilized with cacodylate (Fe-CaC), was clearly detected with anti-EMA.
(6) The melting of chromatin was followed in 5 mM sodium-cacodylate buffer (pH 7.0)+1.5-10(-4) M EDTA containing increasing concentrations of urea.
(7) 260, 7619-7627); and (ii) an alpha 2----3 sialyltransferase that was efficiently solubilized by 0.2% Triton X-100 and required divalent metal ions and 0.3% Triton CF-54 for optimal activity at pH 5.9 in cacodylate buffer.
(8) Utilizing morphometry of electron micrographs of nerves of rat fixed with different schedules of fixation it was concluded that: irrespective of the fixative, fixation at low temperature is associated with markedly low densities of microtubules (MT) of myelinated and of unmyelinated fibers; of the various fixatives tested 2% glutaraldehyde in 0.1 M cacodylate buffer without 0.025 M CaCl2 was associated with the highest density of MT of myelinated fibers and the addition of 0.025 M CaCl2 to a 2% glutaraldehyde fixative solution is associated with abnormally low densities of MT in myelinated and unmyelinated fibers.
(9) Tissues were washed in buffer, then stained in medium containing glucose, diaminobenzidine HCl, and dimethylsulfoxide in 0.1 M cacodylate buffer.
(10) The cacodylate molecule is decomposed to As(V) by heating with Mg(NO3)2.6H20; As(V) is then chemically reduced to As(III) and polarographed in 1M HCl supporting electrolyte.
(11) The midpoint was pCa 8.25 for the former protein and 6.80 for the latter protein in 0.1 M KCl, 50 mM Na-cacodylate-HCl (pH 7.0); and pCa 7.90 for the former protein and 6.70 for the latter protein in the presence of 3 mM MgCl2 in the same solvent system.
(12) In each transport mode, the intercellular spaces were measured after immersion in a series of fixatives in which the concentration of buffer (sodium cacodylate) was increased.
(13) We have found that when a buffer utilized for in vitro polymerization of microtubules, i.e., 1 mM guanosine triphosphate, 1 mM MgSO4, 2 mM ethylene glycol bis(beta-aminoethyl ether)-N, N'-tetraacetic acid 100 mM piperazine-N,N'-bis(2-ethanesulfonic acid), pH 6.9 polymerization mix, was used in the glutaraldehyde prefixation regimen instead of classical fixative buffers, i.e., isotonic cacodylate or phosphate buffer, the following features were observed in thin-sections of the cytoplasm of interphase HeLa cells: (a) a greater than 2-fold increase in total microtubule contour length, (b) a 2-fold increase in a number of microtubules greater than or equal to 1 mu long, (c) an enhanced association of microtubules with cytoplasmic organelles, and (d) an increased clustering of 100 A filaments located in a perinuclear region of the cell.
(14) The isolated, maximally vasodilated rat hindquarter preparation was used to determine how fixation of the vascular bed (glutaraldehyde, 2.5% in 0.05 M Na-cacodylate with dextran 40 g X 1-I) affected transcapillary filtration and diffusion events, as well as macromolecular transfer, measured as transport of water (CFC), of small solutes (PS) and of 125I-albumin.
(15) Tissue samples taken from the left auricular myocardium of four pig hearts at 0, 0.5, 1.5, 3.5, 6, 12 and 24 hours post mortem were fixed for 24 hours by immersion in 2.5 per cent cacodylate buffered glutaraldehyde (pH 7.4).
(16) At pH 7.2, 24 degrees C and in 5mM sodium cacodylate buffer solution, this binding increases the lifetime of the diol epoxide by a factor of nearly 3.
(17) While in pure water (cacodylate buffer pH 7.0, NaCl 0.1 M) they are respectively +388 and +265 mV, in 50% dimethylsulfoxide at 25 degrees C they decrease to +112 and +208 mV.
(18) Optimum pH was 6.8 in cacodylate buffer, and Km values were 2 microM for lactotriaosylceramide and 29 microM for UDP-galactose.
(19) Nine pesticides tested by the oral route (bufencarb, cacodylic acid, dialifor, deltamethrin, dicamba, diquat, quintozene, phoxim, pyrazon) and four tested by the dermal route (bufencarb, chlordimeform, dichlofenthion, leptophos) were more toxic to females than to males whereas famphur and 2,4,5-T (oral route) were less toxic to females.
(20) At the end of the time period, the cornea was flooded with 4% glutaraldehyde, buffered with cacodylate, pH 7.4, and kept moist until removed.
Dimethyl
Definition:
(n.) Ethane; -- sometimes so called because regarded as consisting of two methyl radicals. See Ethane.
Example Sentences:
(1) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(2) Friend erythroleukemia cells were induced to differentiate by dimethyl sulfoxide (DMSO) and hexamethylene-bis-acetamide (HBMA) in order to investigate whether their lipid characteristics, common to other systems of transformed cells, revert to a normal differentiation pattern.
(3) Glyceryl p-aminobenzoate and amyl p-dimethyl-aminobenzoate were labeled on 1 and 3 sunscreens, respectively, but glyceryl p-aminobenzoate was not found in any of them and only traces of amyl p-dimethylaminobenzoate were found in 1 sunscreen.
(4) Furthermore, it is insufficient to fully account for the transmembrane chemical shift differences observed for dimethyl methylphosphonate and hypophosphite.
(5) Radiation inactivation and simple target theory were employed to determine the molecular weight of an insect CNS alpha-bungarotoxin binding component in the presence and absence of a cross-linking reagent, dimethyl suberimate.
(6) The current study used the restraint model of stress ulceration to compare the effects of a more potent prostaglandin analogue, 16,16-dimethyl prostaglandin E2, with hyperosmolar glucose and antacids.
(7) However, when cells were grown in medium containing 2% dimethyl sulfoxide, as many as 50% of the cells had cilia with a 9+0 microtubular pattern.
(8) Finally, fosinopril had no effect on the pressor or chronotropic effects of norepinephrine (NE) or 1,1-dimethyl-4-phenylpiperinium (DMPP) or electrical stimulation of the sympathetic ganglia of pithed rats.
(9) BAY 19139, 1-(4-chlorophenoxy)-1-(1-imidazolyl)-3,3-dimethyl-2-butanol is a new imidazolyl derivative of antifungal agent.
(10) The continuous presence of 180 mM dimethyl sulfoxide (DMSO) during the culture specifically inhibited synthesis of type X collagen and accumulation of its mRNA.
(12) The NMR spectra of the two tRNA species in the region between 0 and 4 ppm below 4,4-dimethyl-4-silapentane-1-sulfonic acid (DSS) (methyl and methylene region) were the same except for the absence of the lowest field peak at 3.8 ppm in tRNAMet f3, thus unequivocally identifying this resonance at the methyl group of m7G47 of tRNAMet f1.
(13) Manoalide, manoalogue, and 7,7-dimethyl-5,8-eicosadienoic acid, effective inhibitors of the isolated PLA2, inhibited PGE2 production in intact P388D1 cells 40-85% in the concentration range studied.
(14) Equilibrium-partitioning measurements indicate that the relative affinities of different probes for PC-rich vesicles, in competition with HODMA or DOTAP vesicles, increase with increasing hydrogen-bonding capacity of the probe headgroup in the order PC less than N,N-dimethyl PE less than N-methyl PE less than PE approximately phosphatidyl-2-amino-1-propanol.
(15) The effect of vinpocetine was compared to other antioxidants, to mannitol, vitamin E and dimethyl sulfoxide.
(16) In order to identify the specific carboxyl groups labeled by ETC, a purified cytochrome c1 preparation containing both the heme peptide and the hinge peptide was dimethylated at all the lysines to prevent internal cross-linking.
(17) Since it is known that the enzyme has two binding sites per subunit for the substrate 6,7-dimethyl-8-ribityllumazine, it appears likely that each of the homologous protein domains provides one binding site.
(18) 6,8-O-Dimethyl-versicolorins A, B and 6-deoxyversicolorin A were found to be strongly mutagenic and genotoxic.
(19) We studied the effects of 16,16-dimethyl prostaglandin E2 (dm-PGE2) and sofalcone, a new antiulcer agent developed in Japan, on ethanol damage to isolated surface epithelial cells (SEC) in vitro and gastric mucosa of rats in vivo.
(20) Mice were exposed to hypoxia by enclosure in cages covered with dimethyl-silicone rubber membranes for 1-14 days.