Disease relevance of Colorimetry

• A rapid method of reflectance colorimetry was used to quantitate growth and acid production (as determined by the colour change in bromcresol purple) of Lactobacillus curvatus, added to a meat product model system [1].
• Two rapid screening methods [the TECRA Listeria Visual Immunoassay (LIS-VIS) kit, an AOAC-approved 48 h visual test, which detects Listeria through colorimetry, and BCM Listeria isolation and differentiation plating agar] were used to screen U.S. Food and Drug Administration-regulated commodities for the presence of Listeria spp [2].
• Cloning and expression of the nucleotide binding domain of the human MDR1 gene in Escherichia coli was established, and by using colorimetry to examine the activity of ATPase to hydrolyse ATP, the ATPase activity of target nucleotide binding domain protein was determined [3].
• Distributions of phenol in fatal poisonings have been reported, but colorimetry was used as the analytical method and it cannot exclude the interference of other phenolic compounds [4].
• Experiments have confirmed that MTT-formazan colorimetry in its simplest form (incubation of intact worms with MTT and direct visualisation of any formazan formed) can be readily applied to several species of filariae including Onchocerca volvulus [5].

High impact information on Colorimetry

• At the end of treatment, colorimetry demonstrated a 40 percent lightening of the lesions toward normal skin color in the tretinoin-treated lesions, as compared with an 18 percent lightening in vehicle-treated lesions (P = 0.05) [6].
• The same culture dishes were assessed by image analysis and by formazan colorimetry for purposes of comparing multiple methods of measuring growth as well as growth inhibition [7].
• Malondialdehyde, a byproduct of thromboxane synthesis, was measured by colorimetry [8].
• We have also compared under the same conditions the degradation products of NO, nitrite, and nitrate in the renal cortex and medulla using in vivo microdialysis combined with microtiter plate colorimetry [9].
• Each serum sample was analyzed for total testosterone by RIA, SHBG-binding capacity was determined by protein precipitation with 50% saturated (NH4)2SO4, and albumin was measured by colorimetry [10].

Biological context of Colorimetry

• 4. The carbohydrate composition of thyroglobulin was determined by acid hydrolysis and colorimetry, evaluating the levels of hexoses, hexosamines and sialic acid.(ABSTRACT TRUNCATED AT 250 WORDS)[11]
• It was found that depletion of MDM2 in this pattern promoted apoptosis of LoVo cells and Cisplatin (DDP) treated in the mdm2siRNA3 transfected cell population would result in a substantial decrease by MTT colorimetry [12].
• In this study, GHb levels in non-diabetic Nigerians (with hemoglobin genotypes AA, AS, and SS) were determined by short column chromatography and thiobarbituric acid colorimetry [13].
• Cell number was determined using Alamar blue and colorimetry [14].
• Cell survival was measured with a commercial kit based on the colorimetry of succinate dehydrogenase activity [15].

Anatomical context of Colorimetry

• Determination of IL-2 and cytotoxicity of killer cells in MTT colorimetry [16].
• Sulfhydryl groups in the apoproteins of the major lipoprotein (density 0.95 g/ml) of hen's egg yolk have been studied by colorimetry, analysis for carboxymethylcysteine, and labelling with [14C]iodo-compounds and their distribution amongst the individual apoproteins (i.e. apovitellenins I-VI) has been determined [17].
• Na(+)-K+ ATPase, and Ca2(+)-Mg2+ ATPase activities in erythrocyte membrane were determined with colorimetry [18].
• The activity of interleukin 2 (IL-2) in culture supernatants of lymphokine-activated killer (LAK) cells and tumor infiltrating lymphocytes (TIL) as well as cytotoxicity of LAK cells on cultured leukemic cells were determined by MTT colorimetry [16].

Associations of Colorimetry with chemical compounds

• We compared thiobarbituric acid colorimetry and boronate chromatography for measuring glycation of serum proteins [19].
• Phloroglucinol-based colorimetry of xylose in plasma and urine compared with a specific gas-chromatographic procedure [20].
• The concentration of total (free and esterified) cholesterol in human serum samples, determined by using the techniques developed in the present study, is in good agreement with that determined by the well-established technique using colorimetry [21].
• Dichlorobenzoquinone chloroimine colorimetry of uric acid in urine [22].
• Simpler colorimetry of serum acetaminophen [23].

Gene context of Colorimetry

• P450 3A4 activity was measured with Nash's colorimetry [24].
• TAP (by colorimetry), serum bone-specific alkaline phosphatase (BAP; by enzyme immunoassay), serum osteocalcin (OC; by ELISA), serum bone sialoprotein (BSP; by RIA), and urinary total pyridinoline (PYD; by HPLC) and deoxypyridinoline (DPD; by HPLC) were measured as markers of bone turnover [25].
• Colorimetry of diaphorase in commercial preparations and clinical chemical reagents by use of tetrazolium salts [26].
• Direct micromethod for colorimetry of serum ornithine carbamoyltransferase activity, with use of a linear standard curve [27].
• Colorimetry and constant-potential coulometry determinations of transferrin-bound iron, total iron-binding capacity, and total iron in serum containing iron-dextran, with use of sodium dithionite and alumina columns [28].

Analytical, diagnostic and therapeutic context of Colorimetry

• Ascorbate in plasma as measured by liquid chromatography and by dichlorophenolindophenol colorimetry [29].
• Aminophenylboronic acid affinity chromatography and thiobarbituric acid colorimetry compared for measuring glycated albumin [30].
• Correlation coefficients were 0.966 and 0.998 for tetrahydrocortisone and allotetrahydrocortisol/tetrahydrocortisol, respectively, when the method was compared with a method involving thin-layer chromatography and colorimetry [31].
• Sodium was measured by flame photometry and creatinine by colorimetry [32].
• The surface color of a series of color dispersions containing from one to three FD&C or D&C dyes suspended in a sucrose syrup was examined using tristimulus colorimetry [33].

References