15 results on '"Neves RF"'
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2. Olfaction and Quality of Life in Patients with Eosinophilic CRS Undergoing Endoscopic Sinus Surgery.
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Tepedino MS, Voegels RL, Pezato R, Thamboo A, Kosug EM, Ferrão ACM, Neves RF, Castilla VMB, and Gregório LC
- Abstract
Introduction Chronic rhinosinusitis (CRS) is a common inflammatory disease. This high prevalence leads to high direct and indirect public health costs, which include medical visits, laboratory tests and imaging, pharmacotherapy, hospitalizations, and surgical treatment. Furthermore, CRS has a substantial impact on patient quality of life, affecting productivity and being a common cause of absence from work CRS-associated olfactory dysfunction is highly prevalent, the actual effectiveness of surgical intervention remains inconsistent. Although there are studies evaluating the postoperative course of patients with eosinophilic Chronic rhinosinusitis (eCRS) treated with high-volume budesonide irrigation, there is little objective information regarding the impact of this intervention on olfactory status and quality of life. Objective To conduct a pre- and postoperative analysis of olfaction and quality of life in patients with eCRS treated with surgical intervention followed by high-volume budesonide nasal irrigation. Methods Prospective, descriptive, uncontrolled study of patients with eCRS. All patients underwent pre- and postoperative nasal endoscopy, SNOT-22 questionnaire, and the University of Pennsylvania Smell Identification Text (UPSIT), always by the same previously trained examiner. The SNOT-22 questionnaire and the UPSIT were readministered to all patients at 3 months, 6 months, and 1 year postoperatively, and scores compared with those obtained preoperatively. Results Twenty patients were included in the study, 13 males and 7 females, between the ages of 23 and 65; 8 patients had comorbid asthma. Quantitative evaluation using the UPSIT test showed a significant improvement in olfaction 3 months after surgery, which remained 6 months and 1 year after surgery (p = 0.0063). There was no significant association between eosinophil concentrations in polypoid tissue and postoperative SNOT-22 and UPSIT results. Patients with tissue eosinophils >50 had a lower preoperative UPSIT score. As early as 3 months postoperatively, a significant improvement in quality of life was already noticeable, as represented by a decrease in SNOT-22 values, which persisted through the 1-year postoperative follow-up evaluation (p = 0.0005). Quantitative evaluation using the UPSIT test showed a significant improvement in olfaction 3 months after surgery, which remained 6 months and 1 year after surgery (p = 0.0063). Conclusion Surgery effectively controlled eCRS in patients who adhered to high-volume budesonide nasal irrigation postoperatively. There were significant improvements in quality of life and olfaction, which persisted at least up to one year postoperatively., Competing Interests: Conflict of Interest None declared., (The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution 4.0 International License, permitting copying and reproduction so long as the original work is given appropriate credit ( https://creativecommons.org/licenses/by/4.0/ ).)
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- 2024
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3. Forecasting study of food-related patents protected by the University of Brasilia, Brazil: Case study.
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Neves RF, Chiarello MD, Lima LA, and Ghesti GF
- Abstract
Patents are important tools to protect innovations in the food industry. They are also indicators of the research and development of an institution. Universities play a significant role in generating and developing innovative technologies. Center for Support to Technological Development (CDT is the Technological innovation center (NIT) that is responsible for protecting the technologies developed by the academic community of the University of Brasilia (UnB). This case study analyzes the patents and patent applications related to food deposited by the UnB. For this purpose, a search was conducted on the National Institute of Industrial Property (INPI) institutional page through the patent database. The results show diverse applications to the food area that are mainly related to biotechnology. Half of the protections are still in progress in the INPI workflow. The requirements issued were primarily related to national genetic heritage. Archiving processes were identified due to non-payment, but we highlighted that it could be a strategic decision of NIT/CDT. Rejections were mainly related to the lack of novelty or inventive steps. Currently, two food-related patents are in force that took, on average, nine and a half years to be granted. Although UnB exclusively owns the majority, the results also evidence co-ownership with other universities and companies. Finally, this study highlights possible partnerships between UnB and the food industry through technology transfer. The technology transfer indicators pointed out that UnB has expertise in this area and that there is a potential to be explored. These results contribute to strategic decision-making in developing new technologies related to food and nutrition and their transfer to society. The scale-up and the increased degree of maturity require greater interaction with the productive sector to ensure the transfer of technology for innovation arising from the research conducted at UnB., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper, (© 2023 The Authors.)
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- 2023
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4. Chenopodium ambrosioides associated with whole body vibration exercises alters the feed intake in Wistar rats.
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Cardoso ALBD, Frederico ÉHFF, Guimarães CAS, Almeida LP, Neves RF, de Sá-Caputo DC, Moreira-Marconi E, Dionello CF, Morel DS, Paineiras-Domingos LL, Sousa-Gonçalves CR, Asad NR, and Bernardo-Filho M
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- Animals, Aspartate Aminotransferases metabolism, Biomarkers blood, Feces, Male, Physical Conditioning, Animal, Rats, Rats, Wistar, Statistics, Nonparametric, Time Factors, Chenopodiaceae chemistry, Eating drug effects, Exercise Test, Plant Extracts pharmacology, Vibration therapeutic use
- Abstract
The consequences of treatment involving the use of a natural product and whole body vibration (WBV) exercise have been investigated. The aim of the present study was to evaluate the effects of the joint treatment with an aqueous extract of Chenopodium ambrosioides and WBV on physiological parameters in rats. Wistar rats ( n =20) were divided equally into four groups: control group (CG), treated with C. ambrosioides (CHE) group, exposed to 50 Hz of mechanial vibration (VBR), and treated with C. ambrosioides and exposed to 50 Hz of mechanical vibration (VBR + CHE) daily for 6 weeks. The body mass of the animals was determined weekly, the feed intake and the stool consistency were measured daily. One day after the 6 weeks of treatment, samples of blood were collected and used for biochemical analysis. Along 6 weeks, there was an increase ( P <0.001) in the feed intake in VBR group and a decrease in the CHE group in comparison with other groups. The levels of the enzyme aspartate aminotransferase (AST) in VBR + CHE group decreased ( P <0.05) in comparison with other groups. No differences were found in body mass and stool consistency. WBV altered the feed intake without directly affecting the body mass. Moreover, WBV in association with C. ambrosioides caused alteration in the enzymatic activity of AST., (© 2017 The Author(s).)
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- 2017
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5. Whole body vibration exercise combined with an extract of Coriandrum sativum modify some biochemical/physiological parameters in rats.
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Frederico ÉHFF, Cardoso ALBD, Guimarães CAS, Almeida LP, Neves RF, Sá-Caputo DC, Moreira-Marconi E, Dionello CF, Morel DS, Paineiras-Domingos LL, Costa-Cavalcanti RG, Sousa-Gonçalves CR, Arnóbio A, Asad NR, and Bernardo-Filho M
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- Animals, Biomarkers blood, Plant Extracts chemistry, Rats, Rats, Wistar, Body Mass Index, Coriandrum chemistry, Physical Conditioning, Animal, Plant Extracts pharmacology, Vibration
- Abstract
The aim of the present study was to evaluate the effect of the association of whole body vibration (WBV) exercise with an aqueous extract of coriander on the biodistribution of the radiopharmaceutical sodium pertechnetate, on the concentration of some plasma biomarker, on the feed intake, on the body mass, and on the stool consistency in rats. Rats were divided in four groups and submitted to different treatments for 40 days. The control group (CON) received deionized water. The group treated with coriander (COR) received the extract of coriander. The rats that were exposed to WBV exercises (WBV-E) also received deionized water. A group of animals received coriander and was exposed to WBV (COR + WBV-E). We found in testis a decrease (0.13 ± 0.01 to 0.06 ± 0.03) of the percentages of injected radioactivity per gram (%ATI/g) in the WBV-E in comparison with the COR. There is no significant alteration on the concentrations of the plasma biomarkers. The feed intake showed a statistically significant increase in WBV-E. No significant difference on the body mass was found. The stool analysis showed a statistical difference on the consistency between COR (hard and dry, darker) and all the other groups (normal). In conclusion, it was verified that possible modifications in some biochemical/physiological parameters of the rats submitted to WBV exercise would be capable to increase the feed intake without changing the body mass, and normalizing the stool consistency altered by the coriander supplementation. Further studies are needed to try to understand better the biological effects involving the association of WBV exercise and coriander., (© 2017 The Author(s).)
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- 2017
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6. Laser stimulation of the acupoint 'Zusanli' (ST.36) on the radiopharmaceutical biodistribution in Wistar rats.
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Frederico ÉH, Santos AA, Sá-Caputo DC, Neves RF, Guimarães CA, Chang S, and Bernardo-Filho M
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- Animals, Lasers, Radiopharmaceuticals chemistry, Radiopharmaceuticals pharmacology, Rats, Rats, Wistar, Technetium Tc 99m Pentetate chemistry, Tissue Distribution, Acupuncture Points, Technetium Tc 99m Pentetate pharmacology
- Abstract
Laser used to stimulate acupoints is called laser acupuncture (LA). It is generally believed that similar clinical responses to manual acupuncture can be achieved. Here we analysed the effects of the laser (904 nm) at the 'Zusanli' acupoint (ST.36) of the stomach meridian on the biodistribution of the radiopharmaceutical Na(99m)TcO4. Wistar rats were divided into control (CG) and experimental groups (EG). The EG were exposed daily to the laser (904 nm) at ST.36 with 1 joule/min (40 mW/cm(2)) for 1 min. The animals of the CG were not exposed to laser at all. On the 8th day after LA, the animals were sedated and Na(99m)TcO4 was administered. After 10 min, the animals were all sacrificed and the organs removed. The radioactivity was counted in each organ to calculate the percentage of radioactivity of the injected dose per gram (%ATI/ g). Comparison of the %ATI/g in EG and CG was performed by Mann-Whitney test. The %ATI/g was significantly increased in the thyroid due to the stimulation of the ST.36 by laser. It is possible to conclude that the stimulation of ST.36 does lead to biological phenomena that interfere with the metabolism of the thyroid.
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- 2016
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7. Excitation of vibrational quanta in furfural by intermediate-energy electrons.
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Jones DB, Neves RF, Lopes MC, da Costa RF, Varella MT, Bettega MH, Lima MA, García G, Blanco F, and Brunger MJ
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We report cross sections for electron-impact excitation of vibrational quanta in furfural, at intermediate incident electron energies (20, 30, and 40 eV). The present differential cross sections are measured over the scattered electron angular range 10°-90°, with corresponding integral cross sections subsequently being determined. Furfural is a viable plant-derived alternative to petrochemicals, being produced via low-temperature plasma treatment of biomass. Current yields, however, need to be significantly improved, possibly through modelling, with the present cross sections being an important component of such simulations. To the best of our knowledge, there are no other cross sections for vibrational excitation of furfural available in the literature, so the present data are valuable for this important molecule.
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- 2015
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8. Electronic excitation of furfural as probed by high-resolution vacuum ultraviolet spectroscopy, electron energy loss spectroscopy, and ab initio calculations.
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Ferreira da Silva F, Lange E, Limão-Vieira P, Jones NC, Hoffmann SV, Hubin-Franskin MJ, Delwiche J, Brunger MJ, Neves RF, Lopes MC, de Oliveira EM, da Costa RF, Varella MT, Bettega MH, Blanco F, García G, Lima MA, and Jones DB
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- Electrons, Spectrophotometry, Ultraviolet, Furaldehyde chemistry, Quantum Theory, Spectroscopy, Electron Energy-Loss
- Abstract
The electronic spectroscopy of isolated furfural (2-furaldehyde) in the gas phase has been investigated using high-resolution photoabsorption spectroscopy in the 3.5-10.8 eV energy-range, with absolute cross section measurements derived. Electron energy loss spectra are also measured over a range of kinematical conditions. Those energy loss spectra are used to derive differential cross sections and in turn generalised oscillator strengths. These experiments are supported by ab initio calculations in order to assign the excited states of the neutral molecule. The good agreement between the theoretical results and the measurements allows us to provide the first quantitative assignment of the electronic state spectroscopy of furfural over an extended energy range.
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- 2015
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9. Integral cross sections for electron impact excitation of vibrational and electronic states in phenol.
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Neves RF, Jones DB, Lopes MC, Blanco F, García G, Ratnavelu K, and Brunger MJ
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- Vibration, Electrons, Phenols chemistry, Quantum Theory
- Abstract
We report on measurements of integral cross sections (ICSs) for electron impact excitation of a series of composite vibrational modes and electronic-states in phenol, where the energy range of those experiments was 15-250 eV. There are currently no other results against which we can directly compare those measured data. We also report results from our independent atom model with screened additivity rule correction computations, namely, for the inelastic ICS (all discrete electronic states and neutral dissociation) and the total ionisation ICS. In addition, for the relevant dipole-allowed excited electronic states, we also report f-scaled Born-level and energy-corrected and f-scaled Born-level (BEf-scaled) ICS. Where possible, our measured and calculated ICSs are compared against one another with the general level of accord between them being satisfactory to within the measurement uncertainties.
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- 2015
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10. Intermediate energy electron impact excitation of composite vibrational modes in phenol.
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Neves RF, Jones DB, Lopes MC, Nixon KL, de Oliveira EM, da Costa RF, Varella MT, Bettega MH, Lima MA, da Silva GB, and Brunger MJ
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We report differential cross section results from an experimental investigation into the electron impact excitation of a number of the low-lying composite (unresolved) vibrational modes in phenol (C6H5OH). The measurements were carried out at incident electron energies in the range 15-40 eV and for scattered-electron angles in the range 10-90°. The energy resolution of those measurements was typically ∼80 meV. Calculations, using the GAMESS code, were also undertaken with a B3LYP/aug-cc-pVDZ level model chemistry, in order to enable us to assign vibrational modes to the features observed in our energy loss spectra. To the best of our knowledge, the present cross sections are the first to be reported for vibrational excitation of the C6H5OH molecule by electron impact.
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- 2015
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11. Differential cross sections for electron impact excitation of the electronic bands of phenol.
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Neves RF, Jones DB, Lopes MC, Nixon KL, da Silva GB, Duque HV, de Oliveira EM, da Costa RF, Varella MT, Bettega MH, Lima MA, Ratnavelu K, García G, and Brunger MJ
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We report results from a joint theoretical and experimental investigation into electron scattering from the important organic species phenol (C6H5OH). Specifically, differential cross sections (DCSs) have been measured and calculated for the electron-impact excitation of the electronic states of C6H5OH. The measurements were carried out at energies in the range 15-40 eV, and for scattered-electron angles between 10° and 90°. The energy resolution of those experiments was typically ∼80 meV. Corresponding Schwinger multichannel method with pseudo-potentials calculations, with and without Born-closure, were also performed for a sub-set of the excited electronic-states that were accessed in the measurements. Those calculations were conducted at the static exchange plus polarisation (SEP)-level using a minimum orbital basis for single configuration interaction (MOBSCI) approach. Agreement between the measured and calculated DCSs was typically fair, although to obtain quantitative accord, the theory would need to incorporate even more channels into the MOBSCI.
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- 2015
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12. Triply differential (e,2e) studies of phenol.
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da Silva GB, Neves RF, Chiari L, Jones DB, Ali E, Madison DH, Ning CG, Nixon KL, Lopes MC, and Brunger MJ
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- Electrons, Models, Chemical, Molecular Structure, Phenol chemistry
- Abstract
We have measured (e,2e) triple differential cross sections (TDCS) for the electron-impact ionisation of phenol with coplanar asymmetrical kinematics for an incident electron energy of 250 eV. Experimental measurements of the angular distribution of the slow outgoing electrons at 20 eV are obtained when the incident electron scatters through angles of -5°, -10°, and -15°, respectively. The TDCS data are compared with calculations performed within the molecular 3-body distorted wave model. In this case, a mixed level of agreement, that was dependent on the kinematical condition being probed, was observed between the theoretical and experimental results in the binary peak region. The experimental intensity of the recoil features under all kinematical conditions was relatively small, but was still largely underestimated by the theoretical calculations.
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- 2014
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13. An experimental and theoretical investigation into the excited electronic states of phenol.
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Jones DB, da Silva GB, Neves RF, Duque HV, Chiari L, de Oliveira EM, Lopes MC, da Costa RF, Varella MT, Bettega MH, Lima MA, and Brunger MJ
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- Molecular Conformation, Electrons, Models, Molecular, Phenol chemistry, Spectroscopy, Electron Energy-Loss
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We present experimental electron-energy loss spectra (EELS) that were measured at impact energies of 20 and 30 eV and at angles of 90° and 10°, respectively, with energy resolution ∼70 meV. EELS for 250 eV incident electron energy over a range of angles between 3° and 50° have also been measured at a moderate energy resolution (∼0.9 eV). The latter spectra were used to derive differential cross sections and generalised oscillator strengths (GOS) for the dipole-allowed electronic transitions, through normalization to data for elastic electron scattering from benzene. Theoretical calculations were performed using time-dependent density functional theory and single-excitation configuration interaction methods. These calculations were used to assign the experimentally measured spectra. Calculated optical oscillator strengths were also compared to those derived from the GOS data. This provides the first investigation of all singlet and triplet excited electronic states of phenol up to the first ionization potential.
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- 2014
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14. Gene expression changes induced by Trypanosoma cruzi shed microvesicles in mammalian host cells: relevance of tRNA-derived halves.
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Garcia-Silva MR, Cabrera-Cabrera F, das Neves RF, Souto-Padrón T, de Souza W, and Cayota A
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- Animals, Cytoskeleton metabolism, Extracellular Matrix genetics, Extracellular Space metabolism, Gene Expression Profiling, HeLa Cells, Humans, Immunity genetics, Kinetics, Oligonucleotide Array Sequence Analysis, Time Factors, Transfection, Cytoplasmic Vesicles metabolism, Gene Expression Regulation, Host-Parasite Interactions, Mammals parasitology, RNA, Transfer metabolism, Trypanosoma cruzi genetics
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At present, noncoding small RNAs are recognized as key players in novel forms of posttranscriptional gene regulation in most eukaryotes. However, canonical small RNA pathways seem to be lost or excessively simplified in some unicellular organisms including Trypanosoma cruzi which lack functional RNAi pathways. Recently, we reported the presence of alternate small RNA pathways in T. cruzi mainly represented by homogeneous populations of tRNA- and rRNA-derived small RNAs, which are secreted to the extracellular medium included in extracellular vesicles. Extracellular vesicle cargo could be delivered to other parasites and to mammalian susceptible cells promoting metacyclogenesis and conferring susceptibility to infection, respectively. Here we analyzed the changes in gene expression of host HeLa cells induced by extracellular vesicles from T. cruzi. As assessed by microarray assays a large set of genes in HeLa cells were differentially expressed upon incorporation of T. cruzi-derived extracellular vesicles. The elicited response modified mainly host cell cytoskeleton, extracellular matrix, and immune responses pathways. Some genes were also modified by the most abundant tRNA-derived small RNAs included in extracellular vesicles. These data suggest that microvesicles secreted by T. cruzi could be relevant players in early events of the T. cruzi host cell interplay.
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- 2014
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15. Evaluation of nephrolithiasis in autosomal dominant polycystic kidney disease patients.
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Nishiura JL, Neves RF, Eloi SR, Cintra SM, Ajzen SA, and Heilberg IP
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- Adolescent, Adult, Aged, Aged, 80 and over, Biomarkers blood, Biomarkers urine, Blood Chemical Analysis, Female, Humans, Kidney diagnostic imaging, Logistic Models, Male, Middle Aged, Nephrolithiasis blood, Nephrolithiasis etiology, Nephrolithiasis pathology, Nephrolithiasis urine, Organ Size, Polycystic Kidney, Autosomal Dominant blood, Polycystic Kidney, Autosomal Dominant pathology, Polycystic Kidney, Autosomal Dominant urine, Predictive Value of Tests, Risk Assessment, Risk Factors, Tomography, Spiral Computed, Ultrasonography, Urinalysis, Young Adult, Kidney pathology, Nephrolithiasis diagnosis, Polycystic Kidney, Autosomal Dominant complications
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Background and Objectives: Nephrolithiasis (LIT) is more prevalent in patients with autosomal dominant polycystic kidney disease (ADPKD) than in the general population. Renal ultrasonography may underdetect renal stones because of difficulties imposed by parenchymal and/or cyst wall calcifications., Design, Setting, Participants, & Measurements: A total of 125 patients with ADPKD underwent ultrasonography and unenhanced computed tomography (CT) scan, routine blood chemistry, and spot and 24-h urine collections., Results: CT scan detected calculi in 32 patients, including 20 whose previous ultrasonography revealed no calculi. The percentage of hypocitraturia was high but not statistically different between patients with ADPKD+LIT or ADPKD. Hyperuricosuria and distal renal tubular acidosis were less prevalent but also did not differ between groups, whereas hyperoxaluria was significantly higher in the former. Hypercalciuria was not detected. Renal volume was significantly higher in patients with ADPKD+LIT versus ADPKD, and a stepwise multivariate logistic regression analysis showed that a renal volume >or=500 ml was a significant predictor of LIT in patients with ADPKD and normal renal function, after adjustments for age and hypertension., Conclusions: CT scan was better than ultrasonography to detect LIT in patients with ADPKD. Larger kidneys from patients with ADPKD were more prone to develop stones, irrespective of the presence of metabolic disturbances.
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- 2009
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