What's the difference between kerasin and phosphorus?
Kerasin
Definition:
(n.) A nitrogenous substance free from phosphorus, supposed to be present in the brain; a body closely related to cerebrin.
Example Sentences:
(1) The high transition enthalpy for kerasin is ascribed to a lesser accommodation of gauche conformers in the hydrocarbon chains just below the transition temperature.
(2) Natural kerasin was found to act isomorphic to semi-synthetic (natural configuration) D-kerasins but not completely to synthetic DL-kerasins of single acyl chain lengths.
(3) The thermodynamic behavior of these cerebroside fractions, including hysteresis in kerasin gels, is compared to that previously reported for sphingomyelins.
(4) Kerasin mixed with egg PC yields a peritectic phase diagram.
(5) The non-ideal behavior appears to be a superposition of separate interactions of kerasin and phrenosin with egg PC.
(6) Evidence for a higher degree of order in the hydrocarbon chains and a different configuration in the polar region of kerasin is supplied by Raman spectroscopic parameters for these gel phases.
(7) The thermotropic behavior of mixtures of dipalmitoylphosphatidylcholine (DPPC) with natural glycosphingolipids (galactosylceramide, phrenosine, kerasine, glucosylceramide, lactosylceramide, asialo-GM1, sulfatide, GM3, GM1, GD1a, GT1b) in dilute aqueous dispersions were studied by high sensitivity differential scanning calorimetry over the entire composition range.
(8) Kerasin in the stable and metastable gel states exhibits discontinuous and continuous ranges of miscibility, respectively, with DMPC.
(9) Bovine brain cerebroside and its kerasin (beta-D-galactosyl-N-acyl-D-sphingosine) and phrenosin (beta-D-galactosyl-N-(2-D-hydroxyacyl)-D-sphingosine) fractions were mixed with diacylphosphatidylcholines (PCs) to form fully hydrated lamellar phases.
(10) The kerasin fast pool is approximately 17% with a half-time of 29 h and the slow pool approximately 83% with a half-time of 2700 h. In contrast, semisynthetic N-palmitoylgalactosylceramide at the same temperature transfers with single-exponential kinetics with a half-time of 32 h. The half-time for N-lignoceroylgalactosylceramide under the same conditions proved to be greater than 3500 h. No concentration dependence for these half-times was found in the concentration range studied (0-10 mol%).
(11) The stable gel phase of kerasin does not segregate in natural cerebroside.
(12) The kinetics of spontaneous transfer of various glucosyl- and galactosylceramides between 1-palmitoyl-2-oleoylphosphatidylcholine vesicles have been examined at 45 degrees C. Bovine brain galactosylceramides, kerasin and phrenosin, were found to transfer with biexponential kinetics.
(13) Two glycolipids were isolated from pig brain and were shown to be the fatty acid esters of kerasin and cerebron in which the second fatty acid moiety is attached to the 6-position of the galactose.
Phosphorus
Definition:
(n.) The morning star; Phosphor.
(n.) A poisonous nonmetallic element of the nitrogen group, obtained as a white, or yellowish, translucent waxy substance, having a characteristic disagreeable smell. It is very active chemically, must be preserved under water, and unites with oxygen even at ordinary temperatures, giving a faint glow, -- whence its name. It always occurs compined, usually in phosphates, as in the mineral apatite, in bones, etc. It is used in the composition on the tips of friction matches, and for many other purposes. The molecule contains four atoms. Symbol P. Atomic weight 31.0.
(n.) Hence, any substance which shines in the dark like phosphorus, as certain phosphorescent bodies.
Example Sentences:
(1) In the liver of albino rats with experimental thyrotoxicosis a study was made of nucleic acids and some indices of phosphorus metabolism: total and inorganic phosphorus, total and acid-soluble phosphorus, phosphorus of RNA, DNA and phosphoproteins.
(2) Hypertonic saline infusion induced significant (P less than 0.05) increases in serum Na and Cl concentrations and osmolality, whereas ISS induced a significant increase in serum Cl concentration and a significant decrease in serum phosphorus concentration.
(3) A low-protein, low-phosphorus diet supplemented with essential amino acids and keto analogues was given to 12 rats, starting from the 90th day after subtotal nephrectomy.
(4) In comparison with native counterparts, the in vitro-formed LDL2 and HDL + VHDL were characterized by lower levels of triglyceride and cholesterol ester and higher levels of free cholesterol and lipid phosphorus.
(5) Unsupplemented human breast milk may not provide sufficient calcium and phosphorus for the rapidly growing preterm infant to match the accumulation that should have taken place in utero and to permit normal bone mineralization.
(6) In 9 other patients studied 2-7 years after transplantation the mean level of parathormone was lower than in the previous group but levels above normal were noted in half of the patients, some of which had perfect renal function and normal serum phosphorus.
(7) The treatment regimens used were chemotherapy in 9 patients, antiaggregating agents in 7, radioactive phosphorus in 1, the newer platelet-lowering agent anagrelide in 10, and only observation in 29.
(8) Phosphorus in fibrinogen did not correlate with fibrinogen degradation products or fibrinogen levels and became normal on adequate anticoagulation.
(9) The effect of age of the ewe and pregnancy on concentrations of plasma calcium, phosphorus and magnesium and its relationship to the bent-leg syndrome in lambs, were investigated.
(10) Reports in the past two years have appeared evaluating the clinical use of phosphorus spectroscopy to detect ischemic heart disease, cardiomyopathy, and cardiac transplant rejection.
(11) Blood calcium and phosphorus, parathyroid hormone, urinary excretion of calcium were determined.
(12) The raw data are obtained by capillary gas chromatography using a nitrogen-phosphorus detector.
(13) In order to examine the mechanisms underlying radiation-induced changes in phosphorus metabolite levels observed in RIF-1 tumors in vivo, RIF-1 cells in culture were perfused for up to 70 h following gamma-irradiation with 0-25 Gy and monitored continuously by 31P NMR spectroscopy at 8.5 T. Cells immobilized in the sample volume by incorporation into calcium alginate beads were bioenergetically stable, but did not replicate at the cell density used.
(14) With increasing H2O2 concentration in the perfusion media there was a corresponding decrease in the observed phosphorus metabolites, phosphorylcholine and ATP.
(15) All calcium, magnesium, and zinc contents per bone decreased in the 1- and 2-mg caffeine groups as compared to either controls or 0.5-mg caffeine group, whereas phosphorus stayed relatively constant regardless of the different levels of caffeine intake.
(16) 77 p. 100 of those fluids present an antibacterial activity, but no correlation has been found with their concentration in zinc and phosphorus.
(17) The basal diet which contained .30% phosphorus and .21% calcium was adjusted to contain added phosphorus levels of 0, .05, .10, or .15%, with calcium levels of .49, .47, .57 and .61%, respectively.
(18) In 50% of the animals lactate increased prior to any change in the phosphorus metabolites or intracellular pH, suggesting that 1H NMR may be more sensitive than 31P NMR at detecting hypoxic or ischaemic changes.
(19) Ferrihydrite was the predominant form of iron present in both ferritin and haemosiderin, while haemosiderin contained higher amounts of phosphorus, magnesium, calcium and barium, then either normal or ferrocene-loaded ferritin.
(20) Plasma levels of both phosphorus and urate fell during this time.