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1.
J Oral Rehabil ; 45(1): 34-40, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28965355

RESUMEN

As the understanding of temporomandibular disorders' (TMDs) aetiologies and treatments develops from non-evidence-based to evidence-based approaches, the availability of sound information will likewise grow and need to be disseminated. The purpose of this study is to describe the content most commonly viewed in YouTube videos related to TMDs or "TMJ" and see whether videos from different sources have different content. Video information was gathered by searching YouTube for the term "TMJ," and data were recorded related to descriptive information as well as content. Statistical analyses included Kruskal-Wallis H Test, Spearman's Rho and univariate logistic regression. The sources of upload were Consumer (n = 62), Professional (n = 29) and News (n = 9). There were almost no statistically significant differences in content distribution among video sources. Videos garnered a total of 4 749 360 views, with an overall median of 7014.5 views. About two-thirds of the videos (68/100) explained what "TMJ" is, with a surprising third of Professional videos (9/29) not covering the subject. Roughly half of the videos mentioned at least one reason "TMJ" occurs (55/100), and seven in ten mentioned some kind of treatment (70/100). Video names mentioned a cure or treatment in 64 cases, while the other 36 referred to TMJ anatomy or "TMJ" aetiology. Future research should focus on ways to popularise professional videos with reliable information for those who are searching on YouTube for advice related to "TMJ."


Asunto(s)
Internet , Trastornos de la Articulación Temporomandibular , Articulación Temporomandibular , Medicina Basada en la Evidencia , Humanos , Difusión de la Información , Conducta en la Búsqueda de Información , Medios de Comunicación Sociales , Grabación en Video
4.
Rev Esp Enferm Dig ; 99(10): 570-757, 2007 Oct.
Artículo en Español | MEDLINE | ID: mdl-18052659

RESUMEN

BACKGROUND: the association between the three common CARD15 gene mutations (R702W, G908R, L1007fs) and the genetic susceptibility to Crohn s disease (CD) have been confirmed by several studies, with some differences found, in relation to geographic areas and ethnic groups. OBJECTIVES: To analyze the prevalence of CARD15 gen and its polymorphisms in patients with CD in Asturias and its possible correlation with the different genotypes of the disease. METHODS: a total of 216 CD patients recruited from Asturias (North of Spain) and 86 ethnically matched healthy controls, were typed using Hybprobes on a LightCycler instrument for CARD15 mutations. Patients were subdivided according to Vienna classification. We have studied the frequency of these mutations in the different subgroups of CD patients and analyzed its contribution to the disease clinical characteristics and progression. RESULTS: carrier frequencies for CARD15 mutations in our CD patients were similar to controls (17.8 vs. 17.4%) respectively (NS). CD patients exhibited frequencies of 8.8, 3.0 and 6.0% for the R702, G908R and L1007fs polymorphisms respectively, whereas our control population had allele frequencies of 11.6, 2.3 and 3.5% for the three mutations respectively (NS). We did not find any relationship between CARD15 mutations and the different phenotypes of Crohn s disease, according to Vienna classification. CONCLUSIONS: in our CD population, other factors (i.e. environmental), in addition to genetics, must be mainly involved in the development of the disease.


Asunto(s)
Enfermedad de Crohn/genética , Mutación , Proteína Adaptadora de Señalización NOD2/genética , Adulto , Estudios de Casos y Controles , Femenino , Humanos , Masculino , Fenotipo , España
5.
Rev. esp. enferm. dig ; 99(10): 570-575, oct. 2007. tab
Artículo en Es | IBECS | ID: ibc-63279

RESUMEN

Introducción: la asociación entre las mutaciones del genCARD15 y la susceptibilidad genética para la enfermedad deCrohn (EC) se ha confirmado en diversos estudios, con ampliasvariaciones observadas a nivel mundial, tanto geográficas comoétnicas.Objetivos: analizar la prevalencia de gen CARD 15 y sus polimorfismosen pacientes con EC en Asturias y su posible correlacióncon los diversos fenotipos de la enfermedad.Métodos: estudiamos la frecuencia de las tres mutaciones delgen CARD15 (R702W, G908R, L1007fs) usando cebadores específicos,en un total de 216 pacientes con EC y 86 controlesprocedentes del área de Oviedo. Los pacientes fueron clasificadosde acuerdo con la edad al diagnóstico, localización la enfermedady su comportamiento clínico (clasificación de Viena).Resultados: la frecuencia global de portadores de las mutacionesdel gen CARD15 en los pacientes con EC fue del 17,3%frente a un 17,6% en controles (NS). Al analizar separadamentelos polimorfismos R702, G908R y L1007fs los pacientes mostrabanfrecuencias del 8,8, 3 y 6% respectivamente, mientras quelos controles las presentaban en el 11,6, 2,3 y 3,5%, sin encontrardiferencias significativas para ninguna de ellas (NS). Las frecuenciasobservadas en controles, fueron similares a las encontradasen otras regiones españolas.Conclusiones: la prevalencia de mutaciones en CARD15 enpacientes con EC en Asturias es menor a la reportada en otrostrabajos publicados en población española. Otros factores ambientales,además de los genéticos, parecen tener mayor importanciaen el desarrollo de EC en nuestra área


Background: the association between the three commonCARD15 gene mutations (R702W, G908R, L1007fs) and the geneticsusceptibility to Crohn’s disease (CD) have been confirmedby several studies, with some differences found, in relation to geographicareas and ethnic groups.Objectives: To analyze the prevalence of CARD15 gen andits polymorphisms in patients with CD in Asturias and its possiblecorrelation with the different genotypes of the disease.Methods: a total of 216 CD patients recruited from Asturias(North of Spain) and 86 ethnically matched healthy controls, weretyped using Hybprobes on a LightCycler instrument for CARD15mutations. Patients were subdivided according to Vienna classification.We have studied the frequency of these mutations in thedifferent subgroups of CD patients and analyzed its contributionto the disease clinical characteristics and progression.Results: carrier frequencies for CARD15 mutations in ourCD patients were similar to controls (17.8 vs. 17.4%) respectively(NS). CD patients exhibited frequencies of 8.8, 3.0 and 6.0% forthe R702, G908R and L1007fs polymorphisms respectively,whereas our control population had allele frequencies of 11.6,2.3 and 3.5% for the three mutations respectively (NS).We did not find any relationship between CARD15 mutationsand the different phenotypes of Crohn’s disease, according to Viennaclassification.Conclusions: in our CD population, other factors (i.e. environmental),in addition to genetics, must be mainly involved in thedevelopment of the disease


Asunto(s)
Humanos , Caspasas/genética , Enfermedad de Crohn/genética , Predisposición Genética a la Enfermedad , Mutación , Frecuencia de los Genes , Polimorfismo Genético , Heterocigoto , Fenotipo
7.
Clin Exp Immunol ; 146(3): 479-85, 2006 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-17100768

RESUMEN

Dietary gluten induces an early response in the intestine of coeliac disease patients (CD), within a few hours, and this is driven by high levels of proinflammatory cytokines, including IFNgamma and IL-15, as has been thoroughly shown by gluten stimulation of biopsy explants. Our aim was to identify the immune mediators involved in the long-standing inflammation in untreated CD patients at diagnosis. mRNA and protein levels of TNFalpha, IL-12(p35), IL-12(p40), IL-15, IL-18 and IL-23(p19) were quantified in biopsies from active CD patients, CD patients on a gluten-free diet (GFD), healthy controls, and patients with non-CD inflammation and mild histological changes in the intestine. Biopsies from CD patients on a GFD were also stimulated in vitro with gliadin, and protein expression of IL-15 and IL-18 was analysed. Levels of IL-12 and IL-23 mRNA are nearly absent, and TNFalpha levels remain unchanged among different groups. Both the active and inactive forms of IL-18 protein have been found in all samples from active CD, and protein expression was only localized within the crypts. Levels of IL-15 mRNA remain unchanged, and protein expression, localized within the lamina propria, is found in a small number of samples. In vitro stimulation with gluten induces the expression of IL-15 and IL-18. In active CD, the early response following gluten intake characterized by high IFNgamma levels is driven by IL-18, and probably IL-15, and this alternates with periods of long-standing inflammation with moderate IFNgamma levels, maintained by IL-18 alone.


Asunto(s)
Enfermedad Celíaca/inmunología , Mediadores de Inflamación/metabolismo , Interleucina-18/inmunología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Biopsia , Enfermedad Celíaca/dietoterapia , Enfermedad Celíaca/patología , Niño , Preescolar , Citocinas/biosíntesis , Citocinas/genética , Expresión Génica/inmunología , Glútenes/administración & dosificación , Glútenes/inmunología , Humanos , Lactante , Interferón gamma/biosíntesis , Interleucina-15/metabolismo , Interleucina-18/genética , Interleucina-18/metabolismo , Mucosa Intestinal/inmunología , Persona de Mediana Edad , ARN Mensajero/genética , Técnicas de Cultivo de Tejidos
9.
Theor Appl Genet ; 112(5): 867-75, 2006 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-16362273

RESUMEN

Increasing the stearic acid content to improve sunflower (Helianthus annuus L.) oil quality is a desirable breeding objective for food-processing applications. CAS-14 is a sunflower mutant line with a high stearic acid content in its seed oil (>35% vs. <6% in currently grown sunflower hybrids), which is controlled by the Es3 gene. However, the expression of the high stearic acid character in CAS-14 is strongly influenced by temperature during seed maturation and it is not uniform along the seed. The objectives of this study were (1) to identify PCR-based molecular markers linked to the Es3 gene from CAS-14, (2) to map this gene on the sunflower genetic map, and (3) to characterize the interaction between CAS-14 and CAS-3, a sunflower high stearic acid (about 26%) mutant line with the Es1 and Es2 genes determining this trait. Two F2 mapping populations were developed from crosses between CAS-14 and P21, a nuclear male sterile line with the Ms11 gene controlling this character, and between CAS-14 and CAS-3. One hundred and thirty-three individuals from P21xCAS-14, and 164 individuals from CAS-3xCAS-14 were phenotyped in F2 and F3 seed generations for fatty acid composition using gas-liquid chromatography, and they were then genotyped with microsatellite [simple sequence repeat (SSR)] and insertion-deletion (INDEL) markers. Bulk segregant analysis in the P21xCAS-14 population identified two markers on LG 8 putatively linked to Es3. A large linkage group was identified using additional markers mapping to LG 8. Es3 mapped to the distal half of LG 8 and was flanked by the SSR markers ORS243 and ORS1161 at genetic distances of 0.5, and 3.9 cM, respectively. The Ms11 gene was also mapped to LG 8 and genetic distance between this gene and Es3 was found to be 7.4 cM. In the CAS-3xCAS-14 population, two QTLs were identified on LG 1 and LG 8, which underlie the Es1 gene from CAS-3 and the Es3 gene from CAS-14, respectively. A significant epistatic interaction between these two QTLs was found. Results from this study provided a basis for determining CAS-14 efficient breeding strategies.


Asunto(s)
Helianthus/química , Helianthus/genética , Semillas/química , Ácidos Esteáricos/análisis , Cruzamiento , Ligamiento Genético , Marcadores Genéticos , Helianthus/anatomía & histología , Mutación , Fenotipo
10.
Allergol Immunopathol (Madr) ; 33(5): 245-9, 2005.
Artículo en Inglés | MEDLINE | ID: mdl-16287542

RESUMEN

UNLABELLED: Predisposition to coeliac disease (CD) might be partially due to an individual pattern of hyper-inflammatory biased immune response. One of these patterns of intense response may be linked to the haplotype carrying HLA-DQ2 alleles and TNF -308A allele. However, 10 % of CD patients do not express the DQ2 heterodimer and these do not usually carry the TNF -308A allele. A similar response might be achieved by genes codifying other cytokines. OBJECTIVES: To study biallelic polymorphisms in genes codifying for TNFalpha, IL10, IL6 and TGFbeta1 in DQ2 negative CD patients and to compare the results with DQ2 positive patients and healthy controls, in order to establish whether any of these polymorphisms have a role in CD susceptibility. METHODS: TNF -308 (G > A), IL-6 -174 (G > C) and TGFB1 codon 10 (+ 869, T > C) and codon 25 (+ 915, G > C) polymorphisms and IL-10 haplotype of polymorphisms in positions -1082 (G > A), -819 (C > T) and -592 (C > A) were typed by a SSP-PCR technique. RESULTS: The distribution of allele frequencies for TNF -308 is different between DQ2 positive CD patients and controls and the same occurs for haplotype frequencies of the IL10 promoter (-1082, -819, -592): The frequencies of the TNF -308A allele (p = 0.027), TNF -308A carriers (p = 0.031) and of IL10GCC haplotype are increased (p = 0.013) in DQ2 positive CD patients. However, the IL6 -174 allele G is more frequent in DQ2 negative patients than in healthy controls (p = 0.018), DQ2 negative controls (p = 0,018), and DQ2 positive patients (p = 0.008). CONCLUSIONS: DQ2 negative CD patients show an increased frequency of genotypes associated to IL6 high production. These were mainly allele G homozygous for the IL6 gene (-174) polymorphism. The IL6 -174GG genotype (homozygous) may be an additional risk marker for CD in DQ2 negative patients, representing an alternative susceptibility factor for CD when TNF -308A is negative.


Asunto(s)
Enfermedad Celíaca/genética , Antígenos HLA-DQ/genética , Interleucina-10/genética , Interleucina-6/genética , Factor de Crecimiento Transformador beta/genética , Alelos , Enfermedad Celíaca/epidemiología , Enfermedad Celíaca/inmunología , Codón/genética , Frecuencia de los Genes , Predisposición Genética a la Enfermedad , Haplotipos/genética , Humanos , Polimorfismo Genético , España/epidemiología , Factor de Crecimiento Transformador beta1
16.
Theor Appl Genet ; 109(1): 92-102, 2004 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-14968309

RESUMEN

Broomrape (Orobanche cumana Wallr.) is a root parasite of sunflower that is regarded as one of the most important constraints of sunflower production in the Mediterranean region. Breeding for resistance is the most effective method of control. P-96 is a sunflower line which shows dominant resistance to broomrape race E and recessive resistance to the very new race F. The objective of this study was to map and characterize quantitative trait loci (QTL) for resistance to race E and to race F of broomrape in P-96. A population from a cross between P-96 and the susceptible line P-21 was phenotyped for broomrape resistance in four experiments, two for race E and two for race F, by measuring different resistance parameters (resistance or susceptibility, number of broomrape per plant, and proportion of resistant plants per F(3) family). This population was also genotyped with microsatellite and RFLP markers. A linkage map comprising 103 marker loci distributed on 17 linkage groups was developed, and composite interval mapping analyses were performed. In total, five QTL ( or1.1, or3.1, or7.1 or13.1 and or13.2) for resistance to race E and six QTL ( or1.1, or4.1, or5.1, or13.1, or13.2 and or16.1) for resistance to race F of broomrape were detected on 7 of the 17 linkage groups. Phenotypic variance for race E resistance was mainly explained by the major QTL or3.1 associated to the resistance or susceptibility character ( R(2)=59%), while race F resistance was explained by QTL with a small to moderate effect ( R(2) from 15.0% to 38.7%), mainly associated with the number of broomrape per plant. Or3.1 was race E-specific, while or1.1, or13.1 and or13.2 of were non-race specific. Or13.1, and or13.2 were stable across the four experiments. Or3.1, and or7.1 were stable over the two race E experiments and or1.1 and or5.1 over the two race F experiments. The results from this study suggest that resistance to broomrape in sunflower is controlled by a combination of qualitative, race-specific resistance affecting the presence or absence of broomrape and a quantitative non-race specific resistance affecting their number.


Asunto(s)
Helianthus/genética , Inmunidad Innata/genética , Orobanche/fisiología , Fenotipo , Enfermedades de las Plantas , Sitios de Carácter Cuantitativo/genética , Mapeo Cromosómico , Cruzamientos Genéticos , Interacciones Huésped-Parásitos , Repeticiones de Microsatélite/genética , Polimorfismo de Longitud del Fragmento de Restricción , España , Yugoslavia
17.
Genet. mol. biol ; 25(1): 65-72, 2002. ilus, tab
Artículo en Inglés | LILACS | ID: lil-324989

RESUMEN

Eight isozyme systems were used in this study: acid phosphatase (ACP), alcohol dehydrogenase (ADH), esterase (EST), glutamate dehydrogenase (GDH), malate dehydrogenase (MDH), phosphoglucoisomerase (PGI), 6-phosphogluconate dehydrogenase (PGD), and phosphoglucomutase (PGM). The polymorphism of these enzyme systems was studied in 25 elite inbred lines. A total of 19 loci were identified, but only eight of them were polymorphic in the germplasm tested. The polymorphic index for the eight informative markers ranged from 0.08 to 0.57, with a mean value of 0.36. Five isozyme loci were mapped in F2:3 populations with existing RFLP data. Est-1, Gdh-2 and Pgi-2 were mapped to linkage groups 3, 14 and 9, respectively. As in previous reports, an ACP locus and a PGD locus were found to be linked, both located in linkage group 2 of the public sunflower map


Asunto(s)
Ligamiento Genético , Helianthus , Polimorfismo Genético , Mapeo Cromosómico , Marcadores Genéticos , Isoenzimas , Plantas
18.
Theor Appl Genet ; 91(2): 195-9, 1995 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-24169763

RESUMEN

A detailed linkage map of Helianthus annuus was constructed based on segregation at 234 RFLP loci, detected by 213 probes, in an F2 population of 289 individuals (derived from a cross between the inbred lines HA89 and ZENB8). The genetic markers covered 1380 centiMorgans (cM) of the sunflower genome and were aranged in 17 linkage groups, corresponding to the haploid number of chromosomes in this species. One locus was found to be unlinked. Although the average interval size was 5.9 cM, there were a number of regions larger than 20 cM that were devoid of markers. Genotypic classes at 23 loci deviated significantly from the expected ratios (1∶2∶1 or 3∶1), all showing a reduction in the ZENB8 homozygous class. The majority of these loci were found to map to four regions on linkage groups G, L and P.

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