Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027960 (mole)
 21,279 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

This paper reports 2 cases of spitz nevus which appeared on the nose. Both patients were male, aged 3 and 33 years. The histopathologic characteristics showed compound nevus. One patient was treated by CO2 laser and the other by biopsy only. The patients were followed up for 3 and 9 months, respectively, ane no recurrence was found during these period.
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PMID:[Spitz nevus (report of 2 cases)]. 824 24

Fourteen patients (14 eyes) were followed up after removal of epibulbar tumors (Bowen's disease, 6 patients, 6 eyes; squamous-cell carcinoma, 6 patients, 6 eyes; progressive nevus, 2 patients, 2 eyes). The vision acuity attained after the treatment was 0.3-0.8 diopters. A recurrence was recorded in 1 case of the 14. Surgical removal of the tumor was carried out with layer-by-layer or perforating keratoplasty. Despite the severity of the condition, the size and infiltrative growth of the tumor, its removal by reconstructive microsurgical methods with preliminary blocking of the vessels with CO2 laser of diathermocoagulation provided the absence of blasts and permitted a reliable and effective recovery of vision in the patients.
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PMID:[Reconstructive surgery in epibulbar tumors]. 831 75

A 10-year-old boy from Guiana was born with a linear nevus sebaceus covering his entire nose from the glabella area to the tip. Cosmetic appearance, which was the major concern of the patient and his family, was greatly improved by the use of the carbon dioxide (CO2) laser. The CO2 laser has not been reported previously as a treatment modality for nevus sebaceus.
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PMID:Linear nevus sebaceus of Jadassohn treated with the carbon dioxide laser. 834 19

A novel sulfate-reducing bacterium isolated from fuel-contaminated subsurface soil, strain PRTOL1, mineralizes toluene as the sole electron donor and carbon source under strictly anaerobic conditions. The mineralization of 80% of toluene carbon to CO2 was demonstrated in experiments with [ring-U-14C]toluene; 15% of toluene carbon was converted to biomass and nonvolatile metabolic by-products, primarily the former. The observed stoichiometric ratio of moles of sulfate consumed per mole of toluene consumed was consistent with the theoretical ratio for mineralization of toluene coupled with the reduction of sulfate to hydrogen sulfide. Strain PRTOL1 also transforms o- and p-xylene to metabolic products when grown with toluene. However, xylene transformation by PRTOL1 is slow relative to toluene degradation and cannot be sustained over time. Stable isotope-labeled substrates were used in conjunction with gas chromatography-mass spectrometry to investigate the by-products of toluene and xylene metabolism. The predominant by-products from toluene, o-xylene, and p-xylene were benzylsuccinic acid, (2-methylbenzyl)succinic acid, and 4-methylbenzoic acid (or p-toluic acid), respectively. Metabolic by-products accounted for nearly all of the o-xylene consumed. Enzyme assays indicated that acetyl coenzyme A oxidation proceeded via the carbon monoxide dehydrogenase pathway. Compared with the only other reported toluene-degrading, sulfate-reducing bacterium, strain PRTOL1 is distinct in that it has a novel 16S rRNA gene sequence and was derived from a freshwater rather than marine environment.
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PMID:Isolation and characterization of a novel toluene-degrading, sulfate-reducing bacterium. 891 80

Imaging of photochemical yield of photosystem II (PSII) computed from leaf chlorophyll fluorescence images and gas-exchange measurements were performed on Rosa rubiginosa leaflets during abscisic acid (ABA) addition. In air ABA induced a decrease of both the net CO2 assimilation (An) and the stomatal water vapor conductance (gs). After ABA treatment, imaging in transient nonphotorespiratory conditions (0.1% O2) revealed a heterogeneous decrease of PSII photochemical yield. This decline was fully reversed by a transient high CO2 concentration (7400 mol mol-1) in the leaf atmosphere. It was concluded that ABA primarily affected An by decreasing the CO2 supply at ribulose-1,5-bisphosphate carboxylase/oxygenase. Therefore, the An versus intercellular mole fraction (Ci) relationship was assumed not to be affected by ABA, and images of Ci and gs were constructed from images of PSII photochemical yield under nonphotorespiratory conditions. The distribution of gs remained unimodal following ABA treatment. A comparison of calculations of Ci from images and gas exchange in ABA-treated leaves showed that the overestimation of Ci estimated from gas exchange was only partly due to heterogeneity. This overestimation was also attributed to the cuticular transpiration, which largely affects the calculation of the leaf conductance to CO2, when leaf conductance to water is low.
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PMID:Mapping intercellular CO2 mole fraction (Ci) in rosa rubiginosa leaves fed with abscisic acid by using chlorophyll fluorescence imaging. Significance Of ci estimated from leaf gas exchange 950 Nov 27

Carbon exchange in the Krebs cycle may result in underestimation of substrate oxidation measured with 13C-labeled substrates, since carbon labeled in position 2 of acetyl-coenzyme A (CoA) could be incorporated into glucose (via gluconeogenesis) and glutamine. Five healthy volunteers were therefore infused with [1-13C] and [2-13C] acetate at a rate of 0.5 micromol x kg(-1) x min(-1) for 165 minutes on two different occasions in randomized order. Whole body acetate turnover did not differ between the two tracers: 7.9+/-0.3 and 7.5+/-0.6 micromol x kg(-1) x min(-1) (nonsignificant [NS]) for [1-13C] and [2-13C] acetate, respectively. Isotopic 13C enrichment was higher in expired CO2 (0.177+/-0.021 v 0.089+/-0.009 atom percent excess [APE], P < .01) and lower in glucose (0.074+/-0.017 v0.291+/-0.061 mole percent excess [MPE], P < .01) for [1-13C] acetate compared with [2-13C] acetate, respectively, at the end of the infusions. Glutamine isotopic enrichment was slightly but not significantly higher when infusing [1-13C] acetate versus [2-13C] acetate (0.348+/-0.038 v0.495+/-0.069 MPE, NS, respectively). At the end of the experiment, the recovery of 13CO2 from [1-13C] acetate was 44.8%+/-2.7%, and from [2-13C] acetate, 22.6%+/-1.3%. A significant correlation was observed between the differences in 13C enrichment of CO2 for the two tracers and glucose (deltaCO2=0.424 x deltaglucose + 0.001, R2=.9856, P=.0007) or glutamine (deltaCO2=0.621 x deltaglutamine + 0.004, R2=.9573, P=.0038) during the infusion. These results suggest that (1) although gluconeogenesis appears to be more responsible than glutamine for the differential recovery of [2-13C] versus [1-13C] acetate, other secondary pathways are probably also implicated; and (2) different recovery correction factors should be applied when measuring substrate oxidation with a stable isotope tracer depending on the expected position of 13C in acetyl-CoA.
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PMID:Role of glucose and glutamine synthesis in the differential recovery of 13CO2 from infused [2-13C] versus [1-13C] acetate. 959 45

The authors applied collagenase and protease in lipofil solution for the treatment of skin lesions caused by CO2 laser interventions. 354 surgical interventions were performed on 91 patients (43 verruca vulgaris, 32 naevus intradermalis, 16 keratosis). The laser methods were excision or/and vaporisation of the lesion. The authors created methodological groups and all of the patients had a control laser wounds without enzymatic treatment. The patients were controlled periodically from the 1st to the 56th postoperative day. The first experience shows that, the use of enzymatic treatment is advantageous for the laser wounds healing. The colour, scar formation and other aspects proved to be better after the enzymatic treatment. The optimal method was the use of the cream for 2-4 postoperative days on very thin layer, without bandage. The result seemed to be better compared with the enzymatically untreated cases.
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PMID:[Clinical experience with enzymes (collagenase, protease) in the treatment of skin lesions caused by CO2-laser surgery]. 965 66

Supercritical and liquid mixtures of ethanol/H2O/CO2 are increasingly used to extract solutes from solid or semi-solid matrixes when nontoxic solvents and fast extraction kinetics are desired. Accordingly, to better understand the mass transport capabilities of these mixtures, the diffusion coefficients of benzene, anthracene, m-cresol, and p-nitrophenol in enhanced-fluidity liquid mixtures of ethanol/H2O/CO2 were studied. The effect of mixture composition and temperature variation on the measured diffusion coefficients was studied. In a mixture containing 0.61/0.39 mole ratio ethanol/H2O, the diffusion coefficients of the four solutes increased comparably either by adding 30 mol % CO2 or by changing the temperature of the mixture from 25 to 60 degrees C. The experimental data were compared to that predicted by the Stokes-Einstein and the Wilke-Chang relations. Often, the experimental diffusion coefficients were greater than those predicted by these mass transport relations. However, the Eyring relationship was useful in describing the variation of diffusion coefficients as a function of temperature change for all of the ethanol/H2O/CO2 mixtures tested.
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PMID:Molecular diffusion coefficients in ethanol/water/carbon dioxide mixtures. 968 41

Chromatographic separation of the non-heme proteins from the erythrocytes of the subterranean mole rat belonging to the superspecies Spalax ehrenbergi from Israel revealed two major peaks. On sequence analyses, the larger peak corresponded to a 56 kDa selenium-binding protein (SeBP) previously characterized from mouse and human liver, and the second peak to the low-activity carbonic anhydrase (CA) isozyme, CA I. There was no evidence of the high-activity CA II isozyme normally found in the red cells of all amniotes tested to date. Thus, the mole rat appears to be the first mammalian species to express both a SeBP and the low-activity CA I isozyme, as the major non-heme proteins in its red blood cells. It is possible that the absence of the high-activity CA II isozyme may be advantageous to the mole rat in adapting to the low O2 and high CO2 environment of its underground burrows. It is also likely that the 56 kDa SeBP may play an important adaptive role in the physiology of the red cell.
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PMID:Unexpected expression of carbonic anhydrase I and selenium-binding protein as the only major non-heme proteins in erythrocytes of the subterranean mole rat (Spalax ehrenbergi). 968 68

A method was developed for measuring protein fractional synthetic rates using the N-methoxycarbonylmethyl ester (MCM) derivative of L-[1-13C]valine and on-line gas chromatography/combustion/isotope ratio mass spectrometry (GC/C/IRMS). The derivatization procedure can be performed rapidly and GC separation of valine from the other branched-chain amino acids, leucine and isoleucine, is easily obtained. A good linear relationship was observed between the increment of the 13C/12C isotope ratio in CO2 gas derived from the combustion of derivatized valine and the tracer mole ratio of L-[1-13C]valine to unlabelled valine. The limit of quantitation was at an L-[1-13C]valine tracer mole ratio of 0.0002. The method was used to measure the isotopic enrichment of L-[1-13C]valine in standard mixtures and in skeletal muscle of six growing piglets infused with L-[1-13C]valine (2 mg kg-1 h-1 for 6 h). After infusion of L-[1-13C]valine the mean tracer mole ratio in plasma of L-[1-13C]valine at the isotopic steady state was 0.0740 +/- 0.0056 (GC/MS, mean +/- SEM) and the mean tracer mole ratio of valine in muscle protein fraction at 6 h was 0.000236 +/- 0.000038 (GC/C/IRMS). The resulting mean protein fractional synthetic rate in piglet skeletal muscle was 0.052 +/- 0.007% h-1, which is in good agreement with literature data obtained with alternative, more elaborate techniques. By this method protein fractional synthetic rates can be measured at low isotopic enrichment levels using L-[1-13C]valine, the MCM derivative and on-line GC/C/IRMS.
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PMID:Determination of low isotopic enrichment of L-[1-13C]valine by gas chromatography/combustion/isotope ratio mass spectrometry: a robust method for measuring protein fractional synthetic rates in vivo. 969 46


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