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1.
J Periodontal Res ; 2024 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-38764144

RESUMO

AIMS: To histologically compare osseointegration and crestal bone healing between newly introduced tapered, self-cutting bone-level test implants and tapered bone-level control implants in sites with fully healed sites. METHODS: Sixty-six implants (33 test, 33 control) were placed 1 mm subcrestally in a minipig model and underwent qualitative histologic and quantitative histometric analyses after 3, 6 and 12 weeks of submerged healing. The primary and secondary outcomes were the bone-to-implant contact (BIC) and first bone-to-implant contact (fBIC). Outcomes between the test and control implants were statistically compared. RESULTS: The BIC values of the test implants were comparable and non-inferior over the time points studied, except for the 12 weeks time point which showed statistically significantly higher BIC values of the test (88.07 ± 5.35%) compared to the control implants (80.88 ± 7.51%) (p = .010). Similarly comparable and non-inferior were the fBIC values, except for the 6-week outcome, which showed statistically higher values for the test (-546.5 ± 450.80 µm) compared to the control implants (-75.7 ± 100.59 µm). fBIC results for the test implants were qualitatively more stable and consistent between test time points. CONCLUSION: Novel self-cutting bone-level test implants demonstrated superior osseointegration and similar bone levels compared to conventional bone-level implants after a healing period of 12 weeks in healed ridges.

2.
Nat Commun ; 15(1): 1640, 2024 Feb 22.
Artigo em Inglês | MEDLINE | ID: mdl-38388531

RESUMO

THOC6 variants are the genetic basis of autosomal recessive THOC6 Intellectual Disability Syndrome (TIDS). THOC6 is critical for mammalian Transcription Export complex (TREX) tetramer formation, which is composed of four six-subunit THO monomers. The TREX tetramer facilitates mammalian RNA processing, in addition to the nuclear mRNA export functions of the TREX dimer conserved through yeast. Human and mouse TIDS model systems revealed novel THOC6-dependent, species-specific TREX tetramer functions. Germline biallelic Thoc6 loss-of-function (LOF) variants result in mouse embryonic lethality. Biallelic THOC6 LOF variants reduce the binding affinity of ALYREF to THOC5 without affecting the protein expression of TREX members, implicating impaired TREX tetramer formation. Defects in RNA nuclear export functions were not detected in biallelic THOC6 LOF human neural cells. Instead, mis-splicing was detected in human and mouse neural tissue, revealing novel THOC6-mediated TREX coordination of mRNA processing. We demonstrate that THOC6 is required for key signaling pathways known to regulate the transition from proliferative to neurogenic divisions during human corticogenesis. Together, these findings implicate altered RNA processing in the developmental biology of TIDS neuropathology.


Assuntos
Deficiência Intelectual , RNA , Estilbenos , Ácidos Sulfônicos , Humanos , Animais , Camundongos , RNA/metabolismo , Deficiência Intelectual/genética , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Processamento Pós-Transcricional do RNA , Transporte de RNA , Mamíferos/genética , Proteínas Nucleares/metabolismo , Proteínas de Ligação a RNA/genética , Proteínas de Ligação a RNA/metabolismo
3.
Plant Foods Hum Nutr ; 78(4): 621-629, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37861933

RESUMO

Although nopal cladodes are a valuable bioactive compound source, they have historically been underused. This review draws a parallel between quantitative and qualitative data from the most outstanding scientific research concerning nopal cladodes in the last five years by implementing a bibliometric analysis. Italy, Mexico, Brazil, and Morocco accounted for approximately 55% of the 111 articles selected for this review. Nopal cladodes are a great source of nourishing ingredients such as mucilage, pectin, insoluble fibers, minerals, ascorbic acid, and bioactive compounds such as carotenoids (e.g., ß-carotene, lutein, and cryptoxanthin), flavonoids (e.g., isorhamnetin, quercetin, rutin, and catechin), phytosterols (e.g., ß-sitosterol and ß-campesterol). Additionally, they offer technological benefits as a food ingredient, allied to good sensory acceptability. The findings suggest that medium-aged cladodes (20 days) have the highest concentration of soluble fiber, protein, and bioactive compounds, rendering them the optimal maturity stage for consumption and processing. Therefore, nopal cladodes can be exploited for several industries, including biotechnology, cosmetics, and pharmaceuticals, and they have attracted attention as a promising ingredient for the food industry in the concept of the next generation of innovative and functional vegetable foods.


Assuntos
Opuntia , Antioxidantes/análise , Ácido Ascórbico/análise , Flavonoides/análise , Carotenoides
4.
Int J Biol Macromol ; 240: 124348, 2023 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-37028632

RESUMO

Avocado seed (AS) is an interesting residue for biopackaging because it has high starch content (41 %). We have prepared composite foam trays based on cassava starch containing different AS concentrations (0, 5, 10 and 15 % w/w) by thermopressing. Composite foam trays with AS were colorful because this residue contains phenolic compounds. The composite foam trays 10AS and 15AS were thicker (2.1-2.3 mm) and denser (0.8-0.9 g/cm3), but less porous (25.6-35.2 %) than cassava starch foam (Control). High AS concentrations yielded composite foam tray less puncture resistant (∼40.4 N) and less flexible (0.7-0.9 %), but with tensile strength values (2.1 MPa) almost similar to the Control. The composite foam trays were less hydrophilic and more water resistant than control due to the presence of protein, lipid, and fibers and starch with more amylose content in AS. High AS concentration in composite foam tray decreases the temperature of thermal decomposition peak corresponding to starch. At temperatures >320 °C the foam trays with AS were more resistant to the thermal degradation due to the presence of fibers in AS. High AS concentrations delayed the degradation time of the composite foam trays by 15 days.


Assuntos
Manihot , Persea , Manihot/química , Amido/química , Amilose , Temperatura
5.
BMC Oral Health ; 22(1): 189, 2022 05 19.
Artigo em Inglês | MEDLINE | ID: mdl-35590298

RESUMO

BACKGROUND: Evidence on the effect of magnification devices on procedure quality in restorative dentistry is scant. This study therefore aimed to assess, under simulated clinical conditions, if magnification loupes affect the quality of preparations carried out by undergraduate dental students. METHODS: 59 undergraduate dental students underwent two visual acuity tests, based on which they were divided into a "low visual acuity group" (visus < 1) and a "good visual acuity group" (visus ≥ 1). In a randomized crossover experiment, participants performed a two-dimensional S and a three-dimensional O figure preparation with a dental handpiece on standardized acrylic blocs designed for preclinical restorative training. Each participant carried out the preparation tasks twice, once with magnification loupes (2.5×) and once without. Two blinded investigators independently evaluated parameters of preparation precision. Data were analyzed using Spearman rank correlation coefficients, intra-class correlation coefficients, and Wilcoxon rank-sum tests (α = 0.05). RESULTS: Participants from the "low visual acuity group" did not show a statistically significant improvement in accuracy when they used magnification loupes for the S figure preparation (p ≥ 0.0625). Participants from the "high visual acuity group" obtained a higher level of accuracy (p ≤ 0.0012) when they used magnification loupes for the S figure preparation. The use of magnification loupes had no statistically significant effect on the accuracy parameters of the O figure cavity preparations (p ≥ 0.1865). Participants with high visual acuity achieved only a marginally better accuracy than participants with a visus < 1. CONCLUSIONS: This study suggests that loupes with 2.5× magnification increase the accuracy of two-dimensional preparations while they have no significant effect, favorable or otherwise, on the accuracy of complex, three-dimensional cavity preparations of untrained dental students.


Assuntos
Lentes , Estudos Cross-Over , Preparo da Cavidade Dentária , Odontologia , Humanos , Estudantes de Odontologia
6.
Actual. osteol ; 18(3): 183-191, 2022. ilus
Artigo em Espanhol | LILACS, UNISALUD, BINACIS | ID: biblio-1509337

RESUMO

La crisis hipercalcémica (CH) es una emergencia endocrina inusual, definida por la presencia de calcemia > 14 mg/dl asociada a disfunción renal, alteraciones cardiovasculares, gastrointestinales y del sensorio; también podría considerarse en pacientes con síntomas graves y calcemia menor. El hiperparatiroidismo primario (HPTP) y las neoplasias malignas son las etiologías más comunes de la hipercalcemia (90% de los casos); sin embargo, rara vez el primero se presenta como CH. Debido a la alta mortalidad asociada a esta entidad, es de gran importancia establecer diagnóstico y tratamiento precoces. Presentamos dos pacientes con crisis hipercalcémica como primera manifestación del HPTP, el 1.° con bloqueo auriculoventricular (AV) completo y el 2.° con pancreatitis aguda. La anatomía patológica (AP) reveló adenoma oxifílico en ambos casos, que es una variante histológica poco frecuente y puede manifestarse clínicamente de forma grave. Conclusiones: los adenomas paratiroideos son causa poco frecuente de CH. Consideramos el tipo histológico observado (adenoma oxifílico) como probable factor condicionante. La pancreatitis y especialmente el bloqueo AV son manifestaciones poco frecuentes de la CH. Resaltamos la importancia de la determinación de los niveles de calcio dentro de la evaluación inicial de todo paciente con bloqueo AV. (AU)


Hypercalcemic crisis (HC) is an unusual endocrine emergency, defined as the presence of serum calcium > 14 mg/dl related to kidney dysfunction, cardiovascular, gastrointestinal and sensory disturbances. It could also be considered in patients with severe symptoms and lower serum calcium levels. Primary hyperparathyroidism (PHPT) and malignant neoplasms are the most common hypercalcemia etiologies (90% of cases), nevertheless, the former hardly ever occurs as HC. Due to the high mortality associated with HC, it is crucial to establish early diagnosis and treatment.We report two patients with HC as the first manifestation of PHPT; the former with atrioventricular (AV) block and the latter with acute pancreatitis. Pathology revealed oxyphilic adenoma in both cases, which is an infrequent histological variant that can have a severe clinical manifestation. Conclusions: parathyroid adenomas are a rare cause of HC. We consider the histological type observed (oxyphilic adenoma) as a probable conditioning factor. Pancreatitis and especially AV block are rare manifestations of HC. We emphasize the importance of determining calcium levels in the initial evaluation of all patients with AV block. (AU)


Assuntos
Humanos , Masculino , Feminino , Idoso , Neoplasias das Paratireoides/complicações , Adenoma/complicações , Hiperparatireoidismo Primário/complicações , Hipercalcemia/diagnóstico , Pancreatite/etiologia , Hormônio Paratireóideo/análise , Neoplasias das Paratireoides/patologia , Adenoma/patologia , Cálcio/sangue , Células Oxífilas/patologia , Bloqueio Atrioventricular/etiologia , Hipercalcemia/etiologia
7.
J Food Prot ; 84(5): 885-895, 2021 May 01.
Artigo em Inglês | MEDLINE | ID: mdl-33320941

RESUMO

ABSTRACT: Butter adulteration practices and their health risks were assessed along the supply chains in the central highlands and southwestern midlands of Ethiopia. A purposive sampling technique was used to select 1,101 respondents. Based on the results of the cross-sectional study, fatty acid profiles of butter samples collected from retailers' shops were investigated to determine the extent of adulteration and understand the risks of food safety. The assessment showed that an average of 94% of the respondents were aware of practices of butter adulteration. The common butter adulterants identified include different brands of hydrogenated vegetable oils, Irish potato puree, banana pulps, melted tallow, wheat and maize dough, and buttermilk, as well as water. The practice of adulteration significantly differed (P < 0.05) along the supply chain and increased from farm markets to the retail shops. Economically motivated adulteration is the main cause and resulted in up to 50% of butter spoilage. There were significant differences among the fatty acid profiles of pure butter; retailers' butter; pure butter intentionally adulterated with hydrogenated oil, potato puree, and banana pulp; and pure hydrogenated oil. The presence of methyl oleate, gondoic acid, and eicosadienoic acid in the retailers' butter might result from adulteration with hydrogenated oils and banana pulps. The study showed the presence of multiple-stage adulteration along the supply chain that could endanger the safety and quality of local butter. Policymakers and regulatory bodies in the area can use the information to improve the safety and quality of local butter along the supply chain.


Assuntos
Manteiga , Contaminação de Alimentos , Manteiga/análise , Estudos Transversais , Etiópia , Contaminação de Alimentos/análise , Inocuidade dos Alimentos
9.
Int J Biol Macromol ; 126: 507-516, 2019 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-30584941

RESUMO

The dye extraction from turmeric rhizomes (Curcuma longa L.) is generated a residue with high starch content that in nature does not form film. Therefore, we decided evaluate how mechanical treatment (ball or cryogenic mill) and chemical treatment with alkali (NaOH 2.5% (1, 4, or 8 h) and bleaching with NaClO or H2O2 at 25 or 45 °C affect the chemical structure of the starch and fibers in turmeric residue, and its filmogenic capacity. Ball milling decreased the turmeric residue particle size more effectively favoring the chemical procedures. Only two types of chemical treatment consisting in alkaline treatment for 4 h and bleaching with NaClO and H2O2, respectively, for 4 h, at 25 °C yielded turmeric residues with filmogenic capacity. The chemical treatments oxidized the starch granules causing to lose their crystal structure as verified by DRX, and removed amorphous fibers such as lignin and hemicellulose increasing cellulose content in turmeric residue. FTIR analyses also revealed that the starch granules were oxidized. As bleaching agent, NaClO caused greater starch oxidation (the highest carboxyl and carbonyl groups contents) affording films with the best mechanical and functional properties. Although chemical treatment reduced the turmeric residue phenolic compounds, the films still presented antioxidant activity.


Assuntos
Materiais Biocompatíveis/síntese química , Curcuma/química , Fenômenos Mecânicos , Extratos Vegetais/química , Amido/química , Antioxidantes/farmacologia , Curcuma/ultraestrutura , Farinha , Tamanho da Partícula , Fenóis/análise , Espectroscopia de Infravermelho com Transformada de Fourier , Amido/ultraestrutura , Difração de Raios X
10.
Int J Biol Macromol ; 125: 800-807, 2019 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-30557647

RESUMO

Starch was isolated from three Andean-native crops - arracacha (Arracacia xanthorrhiza), oca (Oxalis tuberosa), and sweet potato (Ipomoea batatas) - for use as a raw material for the production of foam trays. The starches were characterized in their proximal composition, crystallinity, microstructure and thermal properties. The sweet potato starch showed the highest amylose content (42.65%) and the lowest protein content (0.30%). The oca starch granules were larger (10-30 µm) than sweet potato and arracacha starch. The highest crystallinity of sweet potato starch caused larger values of onset temperature (To), peak temperature (Tp), conclusion temperature (Tc) (67.64 °C, 72.83 °C, and 81.20 °C, respectively) than arracacha and oca starch. The novel foam trays showed good appearance, adequate expansion, and low density; however, all foam trays showed a water absorption capacity >50%, which was related to their porosity and low density. Also, sweet potato and oca starch trays showed high tensile strength (0.67 and 0.65 MPa, respectively) compared with arracacha starch trays (0.52 MPa).


Assuntos
Apiaceae/química , Amido/química , Amilose/química , Peru , Solanum tuberosum/química , Temperatura , Resistência à Tração , Água/química
11.
Rev. iberoam. fertil. reprod. hum ; 35(4): 3-9, oct.-dic. 2018. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-180743

RESUMO

Introducción: A pesar de los avances en la reproducción asistida sigue habiendo pacientes infértiles con problemas para lograr un niño sano en casa. De entre todas las causas de infertilidad, las alteraciones cromosómicas, y en particular las translocaciones afectan al 0,2% de la población humana. Objetivos: Valorar las repercusiones sobre la calidad seminal del hecho de ser portador de una translocación cromosómica y comparar con un grupo control de varones infértiles con cariotipo normal. Material y métodos: Estudio retrospectivo sobre una población de 973 varones con cariotipo realizado entre enero de 2008 y diciembre de 2016 en la Unidad de Reproducción Humana del CHUC. De ellos 19 varones fueron portadores de translocaciones y se tomó un grupo de 93 pacientes 46XY como grupo control. Resultados: Se encontraron diferencias significativas en: edad, diagnóstico del seminograma, volumen seminal y concentración de espermatozoides en fresco. Discusión: El diagnóstico de patología seminal como la Oligozoospermia o Azoospermia hace necesario indicar un cariotipo, realización de FISH en espermatozoides y en caso de alteración realización de un consejo genético y DGP


Introduction: Beside the advances in assisted reproduction, steel are infertile patients with problems to have a healthy baby at home. One of the causes of infertility is the chromosomal alterations, and in particular are the chromosomal translocations that affects at 0.2% of human population. Objectives: To value the repercussions on the seminal quality the fact of having a chromosomal translocation compared with a control group of infertile men with normal cariotype. Material and Methods: Retrospective study of a population of 973 male’s cariotype between January 2008 and December 2016 at the Unit of Human Reproduction of the CHUC. 19 of them had a chromosomal translocation and a group of 93 was taken as a control group 46XY. Results: Differences were founded on: age, semiformal diagnostic, seminal volume and sperm concentration in fresh. Discussion: The diagnosis of seminal pathology as Oligozoospermia or Azoospermia makes necessary to indicate a cariotype, a FISH of spermatozoa and if it is pathologic, a genetic counselling and PGD


Assuntos
Humanos , Masculino , Adulto , Translocação Genética/genética , Contagem de Espermatozoides , Infertilidade Masculina/genética , Estudos de Casos e Controles , Estudos Retrospectivos , Estudo Observacional
12.
Carbohydr Polym ; 198: 61-68, 2018 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-30093040

RESUMO

This work is a comparative study of the application of mercerized soybean straw (MSS) and nanocellulose produced by acid (CNCs) or enzymatic hydrolysis (CNFs) as reinforcing fillers in soy protein isolate (SPI) films. CNCs presented average dimensions of about 10 nm-thick and 300 nm-long with a crystallinity index of 57%, whereas CNFs have similar diameters, though with greater lengths (>1 µm), lower crystallinity index (50%) and greater thermal stability. Incorporation of 5% of CNCs and CNFs (g/100 g of SPI) improved the SPI film tensile strength by 38 and 48% respectively, and decreased the SPI film elongation at break when compared to control films. The SPI-CNC films showed the lowest values for solubility, probably due to their higher crystallinity (63%). On the other hand, the water vapor permeability was solely reduced with CNF addition, which can be attributed to their higher aspect ratio (length/diameter) and a better incorporation into the protein matrix.

13.
Carbohydr Polym ; 157: 512-520, 2017 Feb 10.
Artigo em Inglês | MEDLINE | ID: mdl-27987956

RESUMO

This work investigated changes in the chemical composition and structure of soybean straw (SS) treated with alkali (NaOH 5% and 17.5%) and bleached with hydrogen peroxide (H2O2) or sodium hypochlorite (NaOCl). Removal of the amorphous constituents increased the degree of crystallinity and the content of cellulose fibers particularly after reaction with high concentrations of alkali. Treatment with NaOH 17.5% contributed to the allomorph transition from cellulose I to II regardless of the bleaching agent, but H2O2 as bleaching agent promoted more effective delignification. This work also evaluated the potential use of treated and non-treated SS as reinforcement filler in soy protein isolate film (SPI). Films added with treated SS presented higher mechanical resistance, lower elongation at break, and lower solubility in water. Addition of non-treated SS did not affect the properties of the SPI film significantly. The low solubility and the reasonable water vapor permeability of the composite films make them suitable packaging materials for fresh fruit and vegetables.


Assuntos
Embalagem de Alimentos , Conservação de Alimentos , Proteínas de Soja/química , Celulose , Peróxido de Hidrogênio , Permeabilidade , Hipoclorito de Sódio , Glycine max , Resistência à Tração
14.
Mater Sci Eng C Mater Biol Appl ; 58: 1-6, 2016 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-26478280

RESUMO

The high biocompatibility and resorbability of polymeric membranes have encouraged their use to manufacture medical devices. Here, we report on the preparation of membranes consisting of carrageenan, a naturally occurring sulfated polysaccharide that forms helical structures in the presence of calcium ions. We incorporated CaCO3 particles into the membranes to enhance their bioactivity and mechanical properties. Infrared spectroscopy and X-ray diffraction data confirmed CaCO3 incorporation into the polymeric matrix. We tested the bioactivity of the samples by immersing them in a solution that mimics the ionic composition and pH of the human body fluid. The hybrid membranes generated hydroxyapatite, as attested by X-ray diffraction data. Scanning electron and atomic force microscopies aided investigation of membrane topography before and after CaCO3 deposition. The wettability and surface free energy, evaluated by contact angle measures, increased in the presence of CaCO3 particles. These parameters are important for membrane implantation in the body. Moreover, membrane stiffness was up to 110% higher in the presence of the inorganic particles, as revealed by Young's modulus.


Assuntos
Carbonato de Cálcio/química , Carragenina/química , Membranas Artificiais
15.
Am J Prev Med ; 49(5 Suppl 3): S249-56, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26477900

RESUMO

The University of Maryland Department of Epidemiology and Public Health collaborated with the Center for Integrative Medicine at the same institution to develop and implement a unique integrative medicine curriculum within a preventive medicine residency program. Between October 2012 and July 2014, Center for Integrative Medicine faculty provided preventive medicine residents and faculty, and occasionally other Department of Epidemiology and Public Health faculty, with comprehensive exposure to the field of integrative medicine, including topics such as mind-body medicine, nutrition and nutritional supplements, Traditional Chinese Medicine, massage, biofield therapies, manual medicine, stress management, creative arts, and the use of integrative medicine in the inpatient setting. Preventive medicine residents, under the supervision of Department of Epidemiology and Public Health faculty, led integrative medicine-themed journal clubs. Resident assessments included a case-based knowledge evaluation, the Integrative Medicine Attitudes Questionnaire, and a qualitative evaluation of the program. Residents received more than 60 hours of integrative medicine instruction, including didactic sessions, experiential workshops, and wellness retreats in addition to clinical experiences and individual wellness mentoring. Residents rated the program positively and recommended that integrative medicine be included in preventive medicine residency curricula. The inclusion of a wellness-focused didactic, experiential, and skill-based integrative medicine program within a preventive medicine residency was feasible and well received by all six preventive medicine residents.


Assuntos
Currículo/normas , Medicina Integrativa/educação , Medicina Integrativa/normas , Avaliação de Programas e Projetos de Saúde/normas , Humanos , Internato e Residência , Maryland , Inquéritos e Questionários
16.
J Child Health Care ; 18(1): 19-30, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23610238

RESUMO

Referrals to children's palliative care services typically occur late in the illness trajectory, with many children who would benefit not referred at all. Previous studies report health care professionals' (HCPs) assessment of various parent-related factors as barriers to referral. We conducted a cross-sectional survey of HCPs working in a paediatric tertiary care hospital in the United Kingdom, with an established paediatric palliative care team, to explore staff perceptions of barriers, knowledge and attitudes, with the aim of developing interventions to increase patient access to palliative care services. Survey respondents evidenced good knowledge of the principles of palliative care in closed questions, but their attitudes expressed in open-text questions and reported reasons to refer to a palliative care service demonstrated an association of palliative care with death and dying. We suggest that the association of palliative care with end of life may be a modifiable factor relevant to late and non-referral and deserving of further investigation and attention in education and training.


Assuntos
Atitude do Pessoal de Saúde , Atitude Frente a Morte , Conhecimentos, Atitudes e Prática em Saúde , Hospitais Pediátricos , Cuidados Paliativos/psicologia , Cuidados Paliativos/estatística & dados numéricos , Encaminhamento e Consulta/estatística & dados numéricos , Adolescente , Adulto , Criança , Feminino , Humanos , Masculino , Pais , Centros de Atenção Terciária , Reino Unido
17.
Radiat Prot Dosimetry ; 147(1-2): 240-6, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22039292

RESUMO

The possibility of setting up a positron emission tomography (PET) facility with a cyclotron and radiopharmaceutical laboratory in situ, at a feasible price and in a very restricted space, has led to a steady increase both in the use of the PET technique in diagnostic clinical routine imaging and in the number of cyclotrons for drug production. Owing to the progress made in the PET procedures, it is now possible to have not only a highly innovative system of diagnostic examination, with a remarkable improvement in the diagnostic quality and patient care, but also a considerable increase in the number of daily examinations. In this paper, the authors show how the acquired know-how, with respect to radioprotection, has applied to the planning, running and management of the PET/CT unit, installed in the Imaging Diagnostic Department of the Policlinico Tor Vergata (PTV), at Tor Vergata University, Rome.


Assuntos
Ciclotrons/normas , Medicina Nuclear/normas , Exposição Ocupacional/prevenção & controle , Tomografia por Emissão de Pósitrons/normas , Lesões por Radiação/prevenção & controle , Proteção Radiológica/legislação & jurisprudência , Compostos Radiofarmacêuticos/normas , Fluordesoxiglucose F18/normas , Humanos , Doses de Radiação
18.
J Sci Food Agric ; 90(7): 1185-93, 2010 May.
Artigo em Inglês | MEDLINE | ID: mdl-20394000

RESUMO

BACKGROUND: Amaranth is a little-known culture in Brazilian agriculture. Amaranthus cruentus BRS Alegria was the first cultivar recommended by Embrapa for the soil of the Brazilian scrubland. In order to evaluate the potential of this species in the production of flour, starch and protein concentrates, the latter products were obtained from A. cruentus BRS Alegria seeds, characterized and compared with the products obtained from the A. caudatus species cultivated in its soil of origin. RESULTS: The seeds of A. cruentus BRS Alegria furnished high-purity starch and flour with significant content of starch, proteins, and lipids. The starch and flour of this species presented higher gelatinization temperatures and formed stronger gels upon cooling compared with those obtained from the A. caudatus species. This is due to their greater amylose content and a difference in the composition of the more important fatty acids, such as stearic, oleic and linoleic acids, which indicates that they have greater heat stability. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis and differential scanning calorimetry revealed the presence of albumins, globulins, glutelins and prolamins in the protein concentrate, which was obtained as a byproduct of starch production. CONCLUSION: Amaranthus cruentus BRS Alegria has potential application in the production of flour, starch and protein concentrates, with interesting characteristics for use as food ingredients.


Assuntos
Amaranthus/química , Gorduras na Dieta/análise , Proteínas Alimentares/análise , Farinha , Proteínas de Plantas/análise , Sementes/química , Amido/química , Albuminas/análise , Amilose/análise , Ácidos Graxos/análise , Farinha/normas , Géis , Globulinas/análise , Glutens/análise , Temperatura Alta , Prolaminas/análise , Reologia , Sementes/genética , Amido/normas
19.
Rev. cienc. med. Pinar Rio ; 14(1): 115-127, ene.-mar. 2010.
Artigo em Espanhol | LILACS | ID: lil-739362

RESUMO

Se realizó un estudio de cohorte, con el objetivo de evaluar la efectividad del manejo sindrómico en la reducción de las complicaciones producidas por las infecciones de transmisión sexual en el municipio San Cristóbal, durante los meses de enero de 2005 a diciembre de 2006. La muestra estuvo constituida por el total de pacientes que solicitaron atención médica por presentar secreción uretral, flujo vaginal y/o dolor abdominal bajo en este período. Los datos fueron recogidos a través de encuestas, hojas de cargo y registros hospitalarios. Se efectuó el cálculo de por ciento, tasa y pruebas de significación estadística según procedió. Se concluyó que al inicio del estudio el mayor por ciento de los médicos poseía bajos conocimientos sobre el tema. La enfermedad inflamatoria pélvica aguda fue la complicación más frecuente encontrada antes y después de aplicado al estudio, siendo notoria la reducción que experimentaron todas estas patologías al concluir el mismo, resultando significativo los resultados encontrados. La mayoría de los pacientes de la cohorte A (95,8%) resolvieron su sintomatología antes de los siete días después del tratamiento.


A cohort study aimed at assessing the effectiveness of the Syndromic Management for the reduction of complications produced by Sexually Transmitted Infections was conducted in San Cristobal municipality during both, January 2005 and December 2006. The sample was comprised of the total of patients requesting medical assistance for presenting urethral discharge, vaginal discharge and/or low-abdominal pain during this period of time. Data were collected by means of surveys, charge-sheet and hospital registers. Percentage calculation, rate and statistical significance testing were applied when proceeding. Concluding that, at the beginning of the research a greater percent of doctors had a low level of knowledge about this topic. Acute Pelvic Inflammatory Disease was the most frequent complication found before and after the study; being noticeable the reduction of all these pathologies when the study was concluded. The majority of the patients included in the cohort-A (95, 8%) solved the symptoms before seven days after the treatment.

20.
Rev cienc méd pinar río ; 14(1)ene. 2010. tab
Artigo em Espanhol | CUMED | ID: cum-42438

RESUMO

Se realizó un estudio de cohorte, con el objetivo de evaluar la efectividad del manejo sindrómico en la reducción de las complicaciones producidas por las infecciones de transmisión sexual en el municipio San Cristóbal, durante los meses de enero de 2005 a diciembre de 2006. La muestra estuvo constituida por el total de pacientes que solicitaron atención médica por presentar secreción uretral, flujo vaginal y/o dolor abdominal bajo en este período. Los datos fueron recogidos a través de encuestas, hojas de cargo y registros hospitalarios. Se efectuó el cálculo de por ciento, tasa y pruebas de significación estadística según procedió. Se concluyó que al inicio del estudio el mayor por ciento de los médicos poseía bajos conocimientos sobre el tema. La enfermedad inflamatoria pélvica aguda fue la complicación más frecuente encontrada antes y después de aplicado al estudio, siendo notoria la reducción que experimentaron todas estas patologías al concluir el mismo, resultando significativo los resultados encontrados. La mayoría de los pacientes de la cohorte A (95,8 por ciento) resolvieron su sintomatología antes de los siete días después del tratamiento...(AU)


A cohort study aimed at assessing the effectiveness of the Syndromic Management for the reduction of complications produced by Sexually Transmitted Infections was conducted in San Cristobal municipality during both, January 2005 and December 2006. The sample was comprised of the total of patients requesting medical assistance for presenting urethral discharge, vaginal discharge and/or low-abdominal pain during this period of time. Data were collected by means of surveys, charge-sheet and hospital registers. Percentage calculation, rate and statistical significance testing were applied when proceeding. Concluding that, at the beginning of the research a greater percent of doctors had a low level of knowledge about this topic. Acute Pelvic Inflammatory Disease was the most frequent complication found before and after the study; being noticeable the reduction of all these pathologies when the study was concluded. The majority of the patients included in the cohort-A (95, 8 per cent) solved the symptoms before seven days after the treatment...(AU)


Assuntos
Humanos , Adulto , Infecções Sexualmente Transmissíveis , Salpingite , Doença Inflamatória Pélvica
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