Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 103
Filtrar
1.
Food Chem ; 450: 139299, 2024 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-38613962

RESUMEN

Anthracnose, the most critical disease affecting olive fruits, is caused by Colletotrichum species. While developing olive fruits are immune to the pathogen regardless of the cultivar, the resistance level varies once the fruit ripens. The defense mechanisms responsible for this difference in resistance are not well understood. To explore this, we analyzed the phenolic metabolic pathways occurring in olive fruits and their susceptibility to the pathogen during ripening in two resistant cultivars ('Empeltre' and 'Frantoio') and two susceptible cultivars ('Hojiblanca' and 'Picudo'). Overall, resistant cultivars induced the synthesis of aldehydic and demethylated forms of phenols, which highly inhibited fungal spore germination. In contrast, susceptible cultivars promoted the synthesis of hydroxytyrosol 4-O-glucoside during ripening, a compound with no antifungal effect. This study showed that the distinct phenolic profiles between resistant and susceptible cultivars play a key role in determining olive fruit resistance to Colletotrichum species.


Asunto(s)
Colletotrichum , Frutas , Olea , Fenoles , Enfermedades de las Plantas , Olea/microbiología , Olea/química , Olea/metabolismo , Colletotrichum/crecimiento & desarrollo , Fenoles/metabolismo , Fenoles/química , Frutas/microbiología , Frutas/química , Frutas/metabolismo , Enfermedades de las Plantas/microbiología
2.
Ann Bot ; 132(6): 1145-1158, 2023 12 05.
Artículo en Inglés | MEDLINE | ID: mdl-37856076

RESUMEN

BACKGROUND AND AIMS: Olive (Olea europaea subsp. europaea var. europaea) is the most extensively cultivated fruit crop worldwide. It is considered a wind-pollinated and strictly outcrossing crop. Thus, elevated pollen production is crucial to guarantee optimum fruit set and yield. Despite these facts, the variability of pollen production within the cultivated olive has been scarcely studied. This study aimed to characterize this feature by analysing a representative set of worldwide olive cultivars. METHODS: We evaluated the average number of pollen grains per anther in 57 principal cultivars over three consecutive years. We applied a standard generalized linear model (GLM) approach to study the influence of cultivar, year and the previous year's fruit load on the amount of pollen per anther. Additionally, the K-means method was used for cluster analysis to group cultivars based on their pollen production capacity. KEY RESULTS: Pollen production per anther was highly variable among olive cultivars. The cultivar significantly accounted for 51.3 % of the variance in pollen production and the year for 0.3 %. The interaction between the two factors explained 8.4 % of the variance, indicating that not all cultivars were equally stable in producing pollen across the years. The previous year's fruit load and its interaction with the year were significant, but barely accounted for 1.5 % of the variance. Olive cultivars were classified into four clusters according to their capacity to produce pollen. Interestingly, the fourth cluster was composed of male-sterile cultivars, which presumably share this character by inheritance. CONCLUSIONS: Pollen production per anther varied extensively within the cultivated olive. This variation was mainly driven by the cultivar and its interaction with the year. The differential capacity of olive cultivars to produce pollen should be considered not only for designing new orchards but also gardens where this species is used as an ornamental.


Asunto(s)
Olea , Olea/genética , Polen , Frutas/genética
3.
Langenbecks Arch Surg ; 408(1): 206, 2023 May 24.
Artículo en Inglés | MEDLINE | ID: mdl-37221304

RESUMEN

PURPOSE: Surgery of primary thyroid lymphoma (PTL) has been mostly limited to diagnostic work-up. This study aimed to further study its potential role. METHODS: This was a retrospective study from a multi-institutional registry of PTL patients. Clinical, diagnostic work-up (fine needle aspiration, FNA; core needle biopsy, CoreNB), contribution of surgery (open surgical biopsy, OpenSB; thyroidectomy), histology subtype, and outcome data were evaluated. RESULTS: Some 54 patients were studied. Diagnostic work-up included FNA in 47 patients, CoreNB in 11, and OpenSB in 21. CoreNB yielded the best sensitivity (90.9%). Thyroidectomy was performed in 14 patients with other diagnosis (incidental PTL), in 4 for diagnosis and in 4 for elective treatment of PTL. Incidental PTL was associated with not performed FNA nor CoreNB (OR 52.5; P = 0.008), mucosa-associated lymphoid tissue (MALT) subtype (OR 24.3; P = 0.012), and Hashimoto's thyroiditis (OR 11.1; P = 0.032). Lymphoma-related death (10 cases) mostly occurred within the first year after diagnosis and was associated with diffuse large B-cell (DLBC) subtype (OR 10.3; P = 0.018) and older patients (OR 1.08 for every 1-year increase; P = 0.010). There was a trend towards lower mortality rate in patients receiving thyroidectomy (2/22 versus 8/32, P = 0.172). CONCLUSION: Incidental PTL accounts for most of thyroid surgery cases and are associated with incomplete diagnostic work-up, Hashimoto's thyroiditis and MALT subtype. CoreNB appears to be the best tool for diagnosis. Most of PTL deaths occurred during the first year after diagnosis and mostly related to systemic treatment. Age and DLBC subtype are poor prognostic factors.


Asunto(s)
Linfoma , Neoplasias de la Tiroides , Tiroiditis , Humanos , Estudios Retrospectivos
4.
Food Chem ; 378: 132107, 2022 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-35032800

RESUMEN

Olive mill wastes, generated in the extraction of virgin olive oil (VOO), are of important concern for the industry owing to the produced volume and polluting load, mainly associated with the presence of organic compounds. Among them, it is worth mentioning bioactive compounds, mainly phenols and triterpenes, which could be potentially isolated for further use in the cosmetic, pharmaceutical, or food industries. This research analyzed the olive pomace after extraction of VOO from fruits harvested of 43 international olive cultivars during three consecutive seasons. The cultivar was identified as the most determinant factor to explain the variability in the relative concentration of phenols and terpenic acids in the extracts. In addition, the characterization of olive pomace extracts allowed clustering cultivars according to the profile of bioactive compounds. Finally, we identified the components responsible for the observed discrimination that was explained according to biosynthetic metabolic pathways.


Asunto(s)
Olea , Triterpenos , Frutas/química , Aceite de Oliva/análisis , Fenoles/análisis
5.
Galicia clin ; 82(4): 231-233, Octubre-Noviembre-Dociembre 2021. ilus
Artículo en Español | IBECS | ID: ibc-221754

RESUMEN

La paracoccidioidomicosis es una enfermedad micótica causada por hongos termo-dismórficos del género Paracoccidioides. Típicamente endémica de países como Brasil, Colombia, y otros países de América del sur, su prevalencia varía según la zona, siendo prácticamente exclusiva de dichos países. Puede crecer tanto en forma de levadura como micelas, ocasionando infecciones generalmente asintomáticas, localizadas típicamente en mucosas y tracto respiratorio superior. Presentamos el caso de una paciente inmunodeprimida con diagnóstico de osteomielitis por dicho patógeno. (AU)


Paracoccidioidomycosis is a mycotic disease caused by thermo-dysmorphic fungi, from Paracoccidioides family. Usually endemic from countries such as Brazil, Colombia and another south America countries; its prevalence oscillates depending on the area, being almost exclusive of these countries. It can grow like yeast, also like micelle, causing usually asymptomatic infections at mucosae and upper respiratory tract. We present a case of an immunosuppressed patient, diagnosed of osteomyelitis by this pathogen. (AU)


Asunto(s)
Humanos , Femenino , Adulto , Osteomielitis , Linfoma , Infecciones , Paracoccidioides , España
6.
Food Chem ; 342: 128357, 2021 Apr 16.
Artículo en Inglés | MEDLINE | ID: mdl-33508902

RESUMEN

Phenolic compounds in virgin olive oil (VOO) contribute to its health properties, organoleptic features and oxidative stability. In this study, a total of 44 olive tree cultivars categorized by the International Olive Council to be among the most internationally widespread varieties were exhaustively and homogenously evaluated by analysis of the VOO phenolic profile during three consecutive crop seasons. Differences among cultivars resulted in up to 15-fold variations in the total phenol concentration. The 'cultivar' factor contributed the most to the variance (66.8% for total phenolic concentration) for almost all the phenols. However, the 'interannual variability' factor and the interaction 'cultivar x interannual variability' exhibited significant influences on specific phenols. According to the phenolic profile of the VOOs, we determined the presence of three groups of cultivars marked by the predominance of secoiridoid derivatives, which supports the phenolic profile as a criterion to be considered in olive breeding programs.


Asunto(s)
Aceite de Oliva/análisis , Fenoles/análisis , Cromatografía Líquida de Alta Presión , Extracción Líquido-Líquido , Olea/genética , Olea/crecimiento & desarrollo , Olea/metabolismo , Fenoles/aislamiento & purificación , Fitomejoramiento , Análisis de Componente Principal , Estaciones del Año , Espectrometría de Masas en Tándem
7.
Clin Exp Immunol ; 203(2): 315-328, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33025622

RESUMEN

Decreasing graft rejection and increasing graft and patient survival are great challenges facing liver transplantation (LT). Different T cell subsets participate in the acute cellular rejection (ACR) of the allograft. Cell-mediated immunity markers of the recipient could help to understand the mechanisms underlying acute rejection. This study aimed to analyse different surface antigens on T cells in a cohort of adult liver patients undergoing LT to determine the influence on ACR using multi-parametric flow cytometry functional assay. Thirty patients were monitored at baseline and during 1 year post-transplant. Two groups were established, with (ACR) and without (NACR) acute cellular rejection. Leukocyte, total lymphocyte, percentages of CD4+ CD154+ and CD8+ CD154+ T cells, human leukocyte antigen (HLA) mismatch between recipient-donor and their relation with ACR as well as the acute rejection frequencies were analysed. T cells were stimulated with concanavalin A (Con-A) and surface antigens were analysed by fluorescence activated cell sorter (FACS) analysis. A high percentage of CD4+ CD154+ T cells (P = 0·001) and a low percentage of CD8+ CD154+ T cells (P = 0·002) at baseline were statistically significant in ACR. A receiver operating characteristic analysis determined the cut-off values capable to stratify patients at high risk of ACR with high sensitivity and specificity for CD4+ CD154+ (P = 0·001) and CD8+ CD154+ T cells (P = 0·002). In logistic regression analysis, CD4+ CD154+ , CD8+ CD154+ and HLA mismatch were confirmed as independent risk factors to ACR. Post-transplant percentages of both T cell subsets were significantly higher in ACR, despite variations compared to pretransplant. These findings support the selection of candidates for LT based on the pretransplant percentages of CD4+ CD154+ and CD8+ CD154+ T cells in parallel with other transplant factors.


Asunto(s)
Biomarcadores/sangre , Ligando de CD40/inmunología , Rechazo de Injerto/inmunología , Cadenas HLA-DRB1/inmunología , Subgrupos de Linfocitos T/inmunología , Adulto , Anciano , Linfocitos T CD4-Positivos/inmunología , Linfocitos T CD8-positivos/inmunología , Femenino , Citometría de Flujo/métodos , Trasplante de Corazón/métodos , Humanos , Trasplante de Hígado/métodos , Activación de Linfocitos/inmunología , Masculino , Persona de Mediana Edad , Trasplante Homólogo/métodos , Adulto Joven
8.
Transplant Proc ; 52(2): 534-536, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32081355

RESUMEN

OBJECTIVE: To analyze predictors of survival involved in liver retransplantation (LRT), including the Rosen Model (RM). MATERIALS AND METHODS: This was a descriptive, observational, and unicentric study based on predictors of survival including patients who underwent LRT in a tertiary medical center between April 2002 and December 2018. Recipient, donor, and transplant data were collected, and RM score was calculated for every patient. Fisher exact test and Student t test were used for qualitative and quantitative variables, respectively. The Shapiro-Wilks test was applied to verify the normality of the sample. Survival differences between subgroups were checked using the log-rank test. Statistical significance was stated at P < .05. RESULTS: Among 32 retransplanted patients in this period, 17 (53.1%) survived more than 12 months after LRT. The results of statistical associations between prognostic factors and overall survival highlighted that an older recipient age was significantly correlated with a lower overall survival. The 3-month overall survival was 84.3%. Nineteen patients had a low risk according to RM, with a 3-month survival rate of 78.9%. Eight had a RM intermediate risk, with a survival rate of 21%. Despite the aforementioned data, the log-rank test did not find statistical differences in survival (P = .488). CONCLUSION: We should consider older recipient age as a negative prognostic factor of overall survival. Also, we should contemplate intermediate risk according to RM as an adverse predictor regarding survival in LRT. Both data are of interest regarding the indication or not of LRT and prioritization on the waiting list.


Asunto(s)
Trasplante de Hígado/mortalidad , Selección de Paciente , Reoperación/mortalidad , Listas de Espera/mortalidad , Adulto , Femenino , Humanos , Trasplante de Hígado/métodos , Masculino , Persona de Mediana Edad , Reoperación/métodos , Tasa de Supervivencia
9.
Transplant Proc ; 52(2): 543-545, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32085861

RESUMEN

AIM: To analyze the causes of liver retransplantation (LRT), which mostly depend on recipient factors. MATERIALS AND METHODS: A descriptive, observational, and unicentric study including patients who underwent an LRT in a tertiary medical center between April 2002 and December 2018. Recipient, donor, and liver transplant data were collected. RESULTS: During the period under review a total of 468 transplants were made; among them, 32 (6.8%) were LRT. The most common indication (25%) was hepatic artery thrombosis (HAT) developing ischemic cholangiopathy followed by chronic rejection (21.8%). Late LRT was performed in 71.8%. A total of 96.8% of donations were after brain death with a donor median age of 65 years. Six patients (18.7%) had HAT as a postoperative complication. The recipients' 3-, 6-, and 12-month overall survival was 72.7%, 54.6%, and 51.5%, respectively, and the 5-year was 46.8%. Leading cause of death was septic shock (42.1%). CONCLUSION: In our patients, the most common cause of LRT is HAT. We had an LRT rate of 6.8%, which is consistent with national and international registers.


Asunto(s)
Arteria Hepática/cirugía , Trasplante de Hígado/mortalidad , Complicaciones Posoperatorias/cirugía , Reoperación/mortalidad , Donantes de Tejidos/estadística & datos numéricos , Adulto , Anciano , Femenino , Supervivencia de Injerto , Humanos , Hepatopatías/mortalidad , Hepatopatías/cirugía , Trasplante de Hígado/métodos , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/etiología , Complicaciones Posoperatorias/mortalidad , Reoperación/métodos , Tasa de Supervivencia , Centros de Atención Terciaria , Trombosis/etiología , Trombosis/mortalidad , Trombosis/cirugía
10.
Food Chem ; 314: 126183, 2020 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-31972407

RESUMEN

Phenolic compounds largely contribute to the nutraceutical properties of virgin olive oil (VOO), the organoleptic attributes and the shelf life due to their antioxidant capabilities. Due to the relevance of malaxation in the oil extraction process, we tested the effects of malaxation time on the concentrations of relevant phenolic compounds in VOO, and we evaluated the influence of performing malaxation under vacuum. An increase in malaxation time significantly decreased the concentrations of aglycone isomers of oleuropein and ligstroside but, conversely, increased the oleocanthal and oleacein contents. Additionally, malaxation under vacuum led to an increase in phenolic contents compared to standard conditions carried out at atmospheric pressure. Finally, we explored the possibility of predicting the VOO oxidative stability on the basis of the phenolic profile, and a model (R2 = 0.923; p < 0.0001) was obtained by combining the concentration of the VOO phenolic compounds and the main fatty acids.


Asunto(s)
Manipulación de Alimentos/métodos , Aceite de Oliva/química , Fenoles/análisis , Fenoles/química , Aldehídos/análisis , Aldehídos/química , Monoterpenos Ciclopentánicos/análisis , Monoterpenos Ciclopentánicos/química , Ácidos Grasos/análisis , Ácidos Grasos/química , Glucósidos/análisis , Glucósidos/química , Glucósidos Iridoides , Iridoides/análisis , Iridoides/química , Aceite de Oliva/análisis , Oxidación-Reducción , Piranos/análisis , Piranos/química , Temperatura , Factores de Tiempo
11.
Conserv Biol ; 34(3): 666-676, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-31701577

RESUMEN

The European Union's Natura 2000 (N2000) is among the largest international networks of protected areas. One of its aims is to secure the status of a predetermined set of (targeted) bird and butterfly species. However, nontarget species may also benefit from N2000. We evaluated how the terrestrial component of this network affects the abundance of nontargeted, more common bird and butterfly species based on data from long-term volunteer-based monitoring programs in 9602 sites for birds and 2001 sites for butterflies. In almost half of the 155 bird species assessed, and particularly among woodland specialists, abundance increased (slope estimates ranged from 0.101 [SD 0.042] to 3.51 [SD 1.30]) as the proportion of landscape covered by N2000 sites increased. This positive relationship existed for 27 of the 104 butterfly species (estimates ranged from 0.382 [SD 0.163] to 4.28 [SD 0.768]), although most butterflies were generalists. For most species, when land-cover covariates were accounted for these positive relationships were not evident, meaning land cover may be a determinant of positive effects of the N2000 network. The increase in abundance as N2000 coverage increased correlated with the specialization index for birds, but not for butterflies. Although the N2000 network supports high abundance of a large spectrum of species, the low number of specialist butterflies with a positive association with the N2000 network shows the need to improve the habitat quality of N2000 sites that could harbor open-land butterfly specialists. For a better understanding of the processes involved, we advocate for standardized collection of data at N2000 sites.


Efectos de Natura 2000 sobre las Especies No Focales de Aves y Mariposas con Base en Datos de Ciencia Ciudadana Resumen La red Natura 2000 (N2000) de la Unión Europea está entre las redes internacionales más grandes de áreas protegidas. Uno de sus objetivos es asegurar el estado de un conjunto predeterminado de especies de aves y mariposas (focales). Sin embargo, las especies no focales también pueden beneficiarse con la N2000. Evaluamos cómo el componente terrestre de esta red afecta la abundancia de las especies de aves y mariposas no focales más comunes con base en los datos de programas de monitoreo voluntario a largo plazo en 9,602 sitios para aves y en 2,001 sitios para mariposas. En casi la mitad de las 155 especies de aves evaluadas, particularmente entre aquellas especies especialistas en zonas boscosas, la abundancia incrementó (los estimaciones de la pendiente variaron desde 0.101 [DS 0.042] hasta 3.51 [DS 1.30]) conforme incrementó la proporción del paisaje cubierto por sitios de la N2000. Esta relación positiva existió en 27 de las 104 especies de mariposas (con una variación de estimaciones desde 0.382 [DS 0.163] hasta 4.28 [DS 0.768]), aunque la mayoría de las especies de mariposas fueron generalistas. Cuando se consideraron las covarianzas de cobertura de suelo estas relaciones positivas no fueron evidentes para la mayoría de las especies, lo que significa que la cobertura de suelo puede ser una determinante de los efectos positivos de la red N2000. El incremento en la abundancia conforme aumentó la cobertura de la N2000 estuvo correlacionado con el índice de especialización de las aves, pero no el de las mariposas. Aunque la red N2000 sostiene la abundancia alta de un espectro amplio de especies, el bajo número de mariposas especialistas con una asociación positiva a la red N2000 demuestra la necesidad de mejorar la calidad del hábitat de los sitios N2000 que podrían albergar a mariposas especialistas de campo abierto. Para un mejor entendimiento de los procesos involucrados, promovemos una recolección estandarizada de datos en los sitios de la red N2000.


Asunto(s)
Mariposas Diurnas , Animales , Biodiversidad , Aves , Ciencia Ciudadana , Conservación de los Recursos Naturales , Ecosistema
12.
Med. intensiva (Madr., Ed. impr.) ; 43(8): 464-473, nov. 2019. graf, tab
Artículo en Inglés | IBECS | ID: ibc-185883

RESUMEN

Purpose: To determine the differences in short- and long-term mortality in elderly septic patients with multiorgan dysfunction syndrome and establish the factors related to non-survival. Materials and methods: A retrospective cohort study was made of 206 patients over 65 years of age with septic and septic shock criteria admitted to the ICU of Rio Hortega Hospital between January 2011 and February 2017. Study variables were obtained from electronic database records. Results: A total of 206 patients were included, divided into three groups of age (65-74, 75-85, >85 years). There were no significant differences in mortality according to age group after 28 days, 90 days or one year (28.6%, 32.1% and 45.2% in the 65-74 years age group; 32.5%, 38.6% and 45.8% in the 75-85 years age group, 41%, 48.7% and 56.4% in the >85 years age group). The factors related to mortality were: chronic heart failure, non-haematological cancer, liver dysfunction and central nervous system dysfunction. Conclusions: The results indicate that there is no significant difference in mortality among the different age groups. About 50% of the elderly patients survive a septic process. There is a close relationship between the number of affected organs and days of dysfunction, the use of interventional techniques and long-term mortality


Objetivo: Determinar las diferencias en la mortalidad a corto y largo plazo en pacientes sépticos ancianos con síndrome de disfunción multiorgánica, y cuáles son los factores de riesgo determinantes de esta. Materiales y métodos: Estudio retrospectivo de cohortes de 206 pacientes mayores de 65 años con criterios de shock séptico y sepsis admitidos en la UCI del Hospital Río Hortega entre enero de 2011 y febrero de 2017. Los datos analizados se obtuvieron a través de los registros de bases de datos electrónicas de la unidad. Resultados: Se incluyeron 206 pacientes divididos en 3 grupos de edad (65-74; 75-85; >85). No encontramos diferencias estadísticas en la mortalidad por grupo de edad al cabo de 28 días, 90 días y un año (28,6, 32,1 y 45,2% en el grupo de 65-74 años; 32,5, 38,6 y 45,8% en el grupo de 75-85 años; 41, 48,7 y 56,4% en el grupo de edad >85) Los factores relacionados con la mortalidad fueron: insuficiencia cardíaca crónica, cáncer no hematológico, disfunción hepática y disfunción del sistema nervioso central. Conclusión: Los resultados indican que no hay una diferencia significativa en la mortalidad entre los diferentes grupos de edad. Alrededor del 50% de los pacientes ancianos sobreviven ante un proceso séptico. Existe una estrecha relación entre el número de órganos disfuncionantes, los días de disfunción, el uso de técnicas de intervención y la mortalidad a largo plazo


Asunto(s)
Humanos , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años , Insuficiencia Multiorgánica/mortalidad , Factores de Riesgo , Estudios de Cohortes , Insuficiencia Multiorgánica/epidemiología , Estudios Retrospectivos , Choque Séptico/diagnóstico , Sepsis/complicaciones , Unidades de Cuidados Intensivos , Registros de Mortalidad , Registros Electrónicos de Salud
13.
Med Intensiva (Engl Ed) ; 43(8): 464-473, 2019 Nov.
Artículo en Inglés, Español | MEDLINE | ID: mdl-30025749

RESUMEN

PURPOSE: To determine the differences in short- and long-term mortality in elderly septic patients with multiorgan dysfunction syndrome and establish the factors related to non-survival. MATERIALS AND METHODS: A retrospective cohort study was made of 206 patients over 65 years of age with septic and septic shock criteria admitted to the ICU of Rio Hortega Hospital between January 2011 and February 2017. Study variables were obtained from electronic database records. RESULTS: A total of 206 patients were included, divided into three groups of age (65-74, 75-85, >85 years). There were no significant differences in mortality according to age group after 28 days, 90 days or one year (28.6%, 32.1% and 45.2% in the 65-74 years age group; 32.5%, 38.6% and 45.8% in the 75-85 years age group, 41%, 48.7% and 56.4% in the >85 years age group). The factors related to mortality were: chronic heart failure, non-haematological cancer, liver dysfunction and central nervous system dysfunction. CONCLUSIONS: The results indicate that there is no significant difference in mortality among the different age groups. About 50% of the elderly patients survive a septic process. There is a close relationship between the number of affected organs and days of dysfunction, the use of interventional techniques and long-term mortality.


Asunto(s)
Insuficiencia Multiorgánica/mortalidad , Complicaciones Posoperatorias/mortalidad , Sepsis/mortalidad , APACHE , Distribución por Edad , Factores de Edad , Anciano , Anciano de 80 o más Años , Distribución de Chi-Cuadrado , Estudios de Cohortes , Mortalidad Hospitalaria , Humanos , Unidades de Cuidados Intensivos/estadística & datos numéricos , Estimación de Kaplan-Meier , Puntuaciones en la Disfunción de Órganos , Estudios Retrospectivos , Choque Séptico/mortalidad , Factores de Tiempo
14.
Food Chem ; 266: 192-199, 2018 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-30381176

RESUMEN

Despite the evident influence of the cultivar on olive oil composition, few studies have been devoted to exploring the variability of phenols in a representative number of monovarietal olive oils. In this study, oil samples from 80 cultivars selected for their impact on worldwide oil production were analyzed to compare their phenolic composition by using a method based on LC-MS/MS. Secoiridoid derivatives were the most concentrated phenols in virgin olive oil, showing high variability that was significantly due to the cultivar. Multivariate analysis allowed discrimination between four groups of cultivars through their phenolic profiles: (i) richer in aglycon isomers of oleuropein and ligstroside; (ii) richer in oleocanthal and oleacein; (iii) richer in flavonoids; and (iv) oils with balanced but reduced phenolic concentrations. Additionally, correlation analysis showed no linkage among aglycon isomers and oleocanthal/oleacein, which can be explained by the enzymatic pathways involved in the metabolism of both oleuropein and ligstroside.


Asunto(s)
Variación Biológica Poblacional , Olea/química , Aceite de Oliva/análisis , Fenoles/análisis , Fitoquímicos/análisis , Aldehídos/análisis , Cromatografía Liquida , Monoterpenos Ciclopentánicos , Flavonoides/análisis , Glucósidos/análisis , Glucósidos Iridoides , Iridoides/análisis , Análisis Multivariante , Piranos/análisis , Espectrometría de Masas en Tándem
15.
Transplant Proc ; 50(2): 595-597, 2018 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-29579862

RESUMEN

OBJECTIVES: The score in the Model of End-stage Liver Disease, or MELD, is a good indicator of the survival in patients on the liver transplant waiting list. In this study, an analysis is performed on the benefits of liver transplant on those patients with a very high MELD score and who thus start from a very severe baseline state that could affect the surgical outcome. MATERIALS AND METHODS: A prospective study was conducted on a cohort of 331 patients that received a liver transplant between 2002 and 2014. The patients were divided into 2 groups according to the MELD score (<28 vs ≥28), and differences in age, postoperative complications, stay in the intensive care unit (ICU), hospital stay, and survival were compared. RESULTS: Of the total of 331 patients, 21 (6.3%) had a MELD score ≥ 28. The mean age of the group with MELD score ≥ 28 was lower than the age in the group with MEDL score < 28 (42.5 vs 53.7 years; P < .0001). No significant increase was observed in postoperative complications. Although there were also no differences in survival, the group with MELD score ≥ 28 did have a longer stay in ICU and a longer hospital stay (with a mean of 6.7 days in ICU and 41.5 days admission vs 4.1 and 26.9, respectively). CONCLUSIONS: A very high MELD score is associated with a longer stay in ICU and more days of hospital admission, although no differences were observed in postoperative complications or survival. Therefore, there does not seem to be any contraindication in transplantation in this group of patients.


Asunto(s)
Enfermedad Hepática en Estado Terminal/mortalidad , Enfermedad Hepática en Estado Terminal/cirugía , Trasplante de Hígado/mortalidad , Índice de Severidad de la Enfermedad , Adulto , Anciano , Estudios de Cohortes , Femenino , Humanos , Unidades de Cuidados Intensivos/estadística & datos numéricos , Tiempo de Internación/estadística & datos numéricos , Trasplante de Hígado/efectos adversos , Masculino , Persona de Mediana Edad , Selección de Paciente , Complicaciones Posoperatorias/epidemiología , Estudios Prospectivos , Estudios Retrospectivos
16.
Transplant Proc ; 50(2): 598-600, 2018 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-29579863

RESUMEN

BACKGROUND: Liver retransplantation (LrT) is the only therapeutic option for irreversible hepatic graft failure. Despite various improvements, its technical complexity entails a greater morbidity in the short and long term. The main goal of the study was to analyze the activity of LrT at our center, as well as its indications, timing, postoperative evolution, and the long-term survival of patients. METHODS: We designed a descriptive study of a cohort of patients who underwent LrT in a Spanish Hepatic Transplant Unit, between April 1, 2002 and December 31, 2015. RESULTS: A total of 366 primary orthotopic liver transplantations were performed, 20 of which were LrTs, resulting in a 5.5% retransplantation rate. The most frequent indication for LrT was hepatic artery thrombosis (HAT) (35%). Twenty-five percent of the LrTs were early retransplantations and 75% were late retransplantations. After LrT, 35% of the grafts showed liver dysfunction. The overall mortality rate was 45%: in early LrT this was 25% and in late LrT it was 46.7%. Graft actuarial survival at 1 month post-LrT was 75% and at 5 years it was 63.6%. The overall actuarial survival after LrT at month 1, year 1, year 3, and year 5 was 80%, 69.6%, 58.9%, and 50.5%, respectively. In the late LrT group, the results proved less favorable, so it is necessary to define the minimum acceptable result before proceeding to a second graft. CONCLUSION: Our LrT rate was lower than that reported by other groups in our country. The actuarial survival rates for graft and patient are comparable to those obtained by other groups.


Asunto(s)
Rechazo de Injerto/cirugía , Trasplante de Hígado/mortalidad , Reoperación/mortalidad , Adulto , Anciano , Estudios de Cohortes , Femenino , Humanos , Fallo Hepático/etiología , Fallo Hepático/cirugía , Masculino , Persona de Mediana Edad , Periodo Posoperatorio , España/epidemiología , Tasa de Supervivencia
17.
Transplant Proc ; 50(2): 605-609, 2018 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-29579865

RESUMEN

INTRODUCTION: The current imbalance between available donors and potential recipients for orthotopic liver transplantation (OLT) has led to a liberalization of organ acceptance criteria, increasing the risk of post-transplant complications such as early allograft dysfunction (EAD). Consequently, we need accurate criteria to detect patients with early poor graft function to guide the strategies of management. We evaluated the usefulness of two frequently used criteria: the definition from Olthoff et al and the Model for Early Allograft Function (MEAF) scoring. PATIENTS AND METHODS: Unicentric cohort study of patients undergoing OLT between January 1, 2010, and November 20, 2016. We performed a univariate study to detect donor, recipient, and transplant factors favoring EAD, defined both by Olthoff criteria and a MEAF score higher than 7. Finally, we developed a comparative survival analysis for cases having or not EAD. RESULTS: In all, 201 transplants met inclusion criteria. According to the stated cutoff for MEAF score, the frequency of EAD was 9.3%, with a significant association to low recipient body mass index and prolonged total graft ischemia time, resulting in lower patient 3-month postoperative survival. According to Olthoff criteria, EAD incidence was 22.1% and was associated with younger donor and recipient ages and higher Model for End-stage Liver Disease and Child-Pugh recipient scores. Its development resulted in lower graft and recipient survival at 3 months after OLT. CONCLUSION: MEAF score and Olthoff criteria are useful tools for detection of EAD. The latter could select more appropriately patients at risk, but its calculation cannot be done until the seventh day after OLT, unlike MEAF score, available on third day.


Asunto(s)
Supervivencia de Injerto/fisiología , Disfunción Primaria del Injerto/diagnóstico , Disfunción Primaria del Injerto/epidemiología , Índice de Severidad de la Enfermedad , Adulto , Aloinjertos/fisiopatología , Estudios de Cohortes , Femenino , Humanos , Incidencia , Trasplante de Hígado/efectos adversos , Masculino , Persona de Mediana Edad , Disfunción Primaria del Injerto/fisiopatología , Factores de Riesgo , Factores de Tiempo , Donantes de Tejidos , Trasplante Homólogo/efectos adversos
18.
Transplant Proc ; 50(2): 628-630, 2018 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-29579871

RESUMEN

Liver transplantation offers patients with terminal liver disease an effective treatment accompanied by excellent quality of life, but it also has complications, such as hepatic artery thrombosis and development of ischemic cholangiopathy, described in 3%-17% of patients. It is a very important cause of morbidity and mortality. The objective of this report was to analyze the efficacy of the treatment they received in relation to the development of ischemic cholangiopathy and a comparative survival analysis and to propose prophylactic measures for high-risk patients.


Asunto(s)
Enfermedades de los Conductos Biliares/etiología , Arteria Hepática/patología , Trasplante de Hígado/efectos adversos , Trombosis/etiología , Femenino , Humanos , Isquemia/etiología , Hígado/irrigación sanguínea , Hepatopatías/etiología , Masculino , Estudios Retrospectivos , Resultado del Tratamiento
19.
J Appl Microbiol ; 124(1): 209-219, 2018 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-29024331

RESUMEN

AIMS: To set up a practical method to detect latent infections of Colletotrichum sp., the causal agent of olive anthracnose, on olives before the onset of disease symptoms. METHODS AND RESULTS: Freezing, sodium hydroxide (NaOH), ethanol and ethylene treatments were evaluated to detect latent infections on inoculated and naturally infected olive fruit by Colletotrichum sp. as non-hazardous alternatives to paraquat. Treatments were conducted using fruit of cultivars Arbequina and Hojiblanca. The disease incidence and T50 were calculated. Dipping in NaOH 0·05% solution and the paraquat method were the most effective treatments on both inoculated and naturally infected fruit, although the value of T50 was lower for the NaOH method than for the paraquat method in one of the experiments. Subsequently, the dipping time in NaOH 0·05% was evaluated. Longer dipping times in NaOH 0·05% were better than shorter ones in cultivar Arbequina, with 72 h being the most effective in cultivar Hojiblanca. CONCLUSIONS: NaOH solution is a practical method to detect latent infections of Colletotrichum sp. on immature olive fruit. SIGNIFICANCE AND IMPACT OF THE STUDY: This study is relevant because we set up a viable, non-hazardous alternative to paraquat to detect latent infections of Colletotrichum sp. using NaOH. The use of NaOH is a simple and eco-friendly tool that allows the determination of the level of latent infections by Colletotrichum in olives. Therefore, our method will be useful in decision-making processes for disease management before the appearance of the first visible symptoms.


Asunto(s)
Colletotrichum/fisiología , Olea/microbiología , Enfermedades de las Plantas/microbiología , Colletotrichum/genética , Colletotrichum/aislamiento & purificación , Frutas/microbiología
20.
J Hum Nutr Diet ; 30(6): 681-692, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-28374923

RESUMEN

BACKGROUND: Studies suggest that the ingestion of fish oil (FO), a source of the omega-3 polyunsaturated fatty acids docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), can reduce the deleterious side-effects of chemotherapy. The aim of this randomised clinical trial was to evaluate the effect of supplementation with oral FO for 9 weeks on nutritional parameters and inflammatory nutritional risk in patients with haematological malignancies during the beginning of chemotherapy. METHODS: Twenty-two patients with leukaemia or lymphoma were randomised to the unsupplemented group (UG) (n = 13) or supplemented group (SG) (n = 9). SG received 2 g/day of fish oil for 9 weeks. Nutritional status, serum acute-phase proteins and plasma fatty acids were evaluated before (T0) and after (T1) the intervention period. Data were analysed using two models; model 1, comprising data from all patients included in the study, and model 2, comprising data from UG patients with no increase in the proportions of EPA and DHA in plasma and data from SG patients showing an at least 100% increase in plasma EPA and DHA. RESULTS: SG showed an increased plasma proportion of EPA and DHA in both models. In model 2, C-reactive protein (CRP) and CRP/albumin ratio showed larger reductions in the SG. Overall long-term survival in both models (465 days after the start of the chemotherapy) was higher in the group ingesting fish oil (P < 0.05). CONCLUSIONS: These findings indicate an improved nutritional-inflammatory risk and potential effects on long-term survival in patients with haematological malignancies supplemented with FO during the beginning of chemotherapy.


Asunto(s)
Suplementos Dietéticos , Aceites de Pescado/administración & dosificación , Neoplasias Hematológicas/tratamiento farmacológico , Adolescente , Adulto , Anciano , Antropometría , Proteína C-Reactiva/metabolismo , Ácidos Docosahexaenoicos/administración & dosificación , Ácidos Docosahexaenoicos/sangre , Ácido Eicosapentaenoico/administración & dosificación , Ácido Eicosapentaenoico/sangre , Femenino , Neoplasias Hematológicas/sangre , Humanos , Masculino , Persona de Mediana Edad , Estado Nutricional , Albúmina Sérica/metabolismo , Adulto Joven
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...