(a.) Turning, or causing to turn, toward the right hand; esp., turning the plane of polarization of luminous rays toward the right hand; as, dextrorotatory crystals, sugars, etc. Cf. Levorotatory.
Example Sentences:
(1) The dextrorotatory enantiomer of fluoxetine was slightly more potent than the levorotatory enantiomer in antagonizing the depletion of brain serotonin by p-chloroamphetamine in rats.
(2) The dextrorotatory morphinan opioid, dextrorphan, which has recently been reported to block the excitation of cortical neurons by N-methyl-D-aspartate, was found at 10-100 microM concentrations to attenuate both morphological and chemical evidence of glutamate neurotoxicity in murine neocortical cell cultures; a similar effect was found with its methyl ester derivative, dextromethorphan.
(3) The differences in antihypertensive activity of racemic and dextrorotatory propranolol cannot be explained by different plasma levels; the data indicate that the hypotensive effect of propranolol is due to beta receptor blockade.
(4) Subsequently, beta-End and levorphanol (10(-8) M), but not the dextrorotatory isomer, stimulated an elongation of the cells.
(5) It is dextrorotatory, [alpha](D) = +138 degrees , and has a pK(a) of 5.1.
(6) A compound, C14H24O2, which induces strong juvenilizing effects in the yellow mealworm, Tenebrio molitor L., following topical application to the pupal stage, was isolated in pure form from the roots of Echinacea angustifolia DC and tentatively identified as dextrorotatory (E)-10-hydroxy-4,10-dimethyl-4,11-dodecadien-2-one.
(7) In hypertensive patients, whose blood pressure was decreased by racemic propranololthe dextrorotatory isomer had no antihypertensive effect.
(8) The dextrorotatory enantiomer prevented the depletion of brain serotonin at any time after p-chloroamphetamine.
(9) The dextrorotatory enantiomer of aminoglutethimide is 38 times more potent than the levoenantiomer in inhibiting aromatization of testosterone by human placental microsomes.
(10) In a separate experiment, 100 micrograms of dextrorotatory and levorotatory gossypol was administered to male mice.
(11) The [3H]Tol2Gdn binding site displays stereoselectivity for dextrorotatory optical isomers of benzomorphan opiates known to have sigma-type behavioral effects.
(12) Fatty acids esterifying these fatty alcohols in M. marinum and M. ulcerans were found to belong to the phthioceranic series (dextrorotatory fatty acids), in contrast to those of the other species (laevorotatory fatty acids called mycocerosic acids), both groups having the same chain length and methyl-branched positions.
(13) The dextrorotatory gossypol, both in rat and mice, had less pronounced effect on the histoarchitecture of the testis in comparison to racemic and levorotatory gossypol.
(14) The non-narcotic dextrorotatory morphinan, dextrorphan, as well as its levorotatory opioid enantiomer, levorphanol, and its O-methyl derivative, dextromethorphan, have recently been shown to antagonize N-methyl-D-aspartate receptor-mediated neurotoxicity.
(15) Contrary to what is generally accepted, the dysphoric and psychotomimetic side effects of sigma opiates are mediated by the levo-and not by the dextrorotatory isomers.
(16) Increases in ventricular myocardial refractoriness and in QTc and paced QT intervals suggest that class III electrophysiologic actions contribute to the antiarrhythmic properties of dextrorotatory sotalol in this animal model.
(17) When dog urine was heated with acid rather than treated with beta-glucuronidase, the isolated p-HPPH contained a small preponderance of the dextrorotatory isomer, probably owing to production of d-p-HPPH from the dihydrodiol metabolite.
(18) The dextrorotatory and levorotatory isomers of chloroquine did not differ in their ability to stimulate the hydrolysis of tRNA by pancreatic ribonuclease A.
(19) The others were the dextrorotatory 2,6-bis-(3',4'-dihydroxyphenyl)-3,7-dioxabicyclo-[3,3,0]-octane 4,8-dione (dehydrodicaffeic acid dilactone) andits antipode.
(20) Another mu-agonist, levorphanol (20, 40, 80, or 160 micrograms) and dextrorphan (160 micrograms), its dextrorotatory isomer, were used next to evaluate opioid specificity.
Dextrose
Definition:
(n.) A sirupy, or white crystalline, variety of sugar, C6H12O6 (so called from turning the plane of polarization to the right), occurring in many ripe fruits. Dextrose and levulose are obtained by the inversion of cane sugar or sucrose, and hence called invert sugar. Dextrose is chiefly obtained by the action of heat and acids on starch, and hence called also starch sugar. It is also formed from starchy food by the action of the amylolytic ferments of saliva and pancreatic juice.
Example Sentences:
(1) The most substantial deviations between actual and theoretical osmolarity values occurred with the calcium chloride, sodium bicarbonate, potassium chloride and dextrose solutions.
(2) Alteration in the temperature of the Isoton diluent in a Coulter model S counter over a range of possible laboratory working temperatures produced a change in the mean corpuscular volume using EDTA and dipotassium acid citrate dextrose blood and a commercial control, 4C.
(3) No change in serum DHEA-S, DHEA, or androstenedione levels occurred in paired control studies, during which 0.45% saline was infused at rates matched exactly to the rates of the dextrose and insulin infusions during the hyperinsulinemic clamp studies.
(4) The twig was removed, and calcium-dextrose and penicillin G were administered.
(5) The onset of tolerance to morphine analgesia was studied in 34 female Wistar rats immediately after they drank a dextrose-saccharin cocktail or tap water for 6 or 24 hours.
(6) Plasma dextrose and bicarbonate declined in concentration while potassium, lactate, LDH, ammonia, and hemoglobin rose with storage.
(7) Blood from the same donors stored in citrate-phosphate-dextrose (CPD) adenine had a rapidly rising SFP by 7 to 14 days of storage.
(8) Erythrocytes washed with citrate-phosphate-dextrose solution and reconstituted with platelet-free plasma were stable for 12 weeks.
(9) Only one mild clinical hypoglycaemic episode, responding to increased dextrose infusion, was recorded.
(10) Decreases in procainamide hydrochloride concentrations in the control admixtures might have been caused by procainamide-dextrose complexation.
(11) Ten to fifteen milliliters of a 20 percent magnesium sulfate solution, given intravenously over 1 minute, followed by a slow 4 to 6 hour infusion of 500 ml of 2 per cent magnesium sulfate in 5 per cent dextrose in water is recommended.
(12) In group 2, nine admixtures representing nine combinations of Liposyn II, Aminosyn II with Electrolytes, and dextrose injection were studied.
(13) One implication of this study is that dextrose should not be provided to patients with acute ischemic stroke.
(14) A standard protocol was followed for administration of TPN and included crystalline amino acid solution with lipid emulsion and dextrose as calorie sources.
(15) Fructose and mannose may be as useful as dextrose in citrate-phosphate preservatives for maintaining ATP and 2,3-DPG levels.
(16) However, infusion of hypertonic dextrose solutions resulted in severe generalized hepatic fatty infiltration and marked hypoalbuminemia.
(17) The total nutrient admixture (TNA) contained 1000 ml 10% FreAmine, 1000 ml 50% dextrose, 500 ml 10% Soyacal, electrolytes, vitamins and trace elements.
(18) More acid-citrate-dextrose was infused during procedures with the 2997 (471 ml) than the CS-3000 (324 ml, p less than 0.0005); the donors' ionized calcium decreased significantly more during procedures with the 2997 (27.3%) than the CS-3000 (17.0%, p less than 0.0005).
(19) The stability of hydralazine hydrochloride in aqueous vehicles which contain either dextrose, fructose, lactose, maltose, mannitol, sorbitol or sucrose has been studied using a stability-indicating high-performance liquid chromatographic method.
(20) Series of 1,3-dihalogeno-5-nitrobenzenes, 3- and 3,5-halogenoanilines, and 2,6-dihalogeno-4-nitroanilines were tested for fungitoxicity against Aspergillus niger, A. oryzae, Trichoderma viride, Myrothecium verrucaria, and Trichophyton mentagrophytes in shaken culture by using Sabouraud dextrose broth enriched with yeast extract as the test medium.