Contribution to the Cuban flora catalogue: endemics in the ophiolites derivate soils

Las regiones cubanas donde predominan las ofiolitas son conocidas por tener más endemismos vegetales que regiones aledañas. La riquezaconjunta de esas floras es tal que para entender los patrones de distribución de la flora cubana hay que conocer esos patrones en regiones ofiolíticas.Buenos indicadores de la riqueza total son los componentes endémicos. Con ese fin aquí se publica un esquema cartográfico de regionescubanas donde predominan las rocas mencionadas y una lista de taxones endémicos cubanos allí colectados. En los territorios identificados sehan reconocido1603 taxones infra genéricos endémicos cubanos de 106 familias y 420 géneros. Del total, 741 son exclusivos de regiones ofiolíticas.La mayor parte de los endemismos mencionados son arbustos, seguidos por las hierbas. En los suelos derivados de ofiolitas predominanprincipalmente los taxones del grupo evolutivo norandino.The Cuban regions with predominance of ophiolites are known to have more endemics plants than bordering regions. The combined wealthof those floras is such that to understand the patterns of distribution of the Cuban flora is necessary to know those patterns in ofilitic regions. Goodindicators of the total wealth are the endemic components. With that objective here is published a cartographic diagram of Cuban regions whereit prevail the mentioned rocks, and a list of Cuban endemic taxa collected there. In the identified territories has been recognized 1603 infra genericendemic taxa of 106 families and 420 genus. Of those total, 741 are exclusive of ophiolitic regions. In the soils derivate from ophioliticsrocks mainly taxa from the North Andean evolutionary group are predominate

El endemismo en la flora de las montañas cubanas

Cuban flora is characterized by the large number of endemic species. These taxa do not have a uniform distribution throughout the archipelago, but rather the major centers of accumulation are in the mountains. Hence the importance of knowing these distribution patterns to understand the flora as a whole. In this work an analysis of the plant diversity in the orographic groups is made. Together with this, an analysis of the distribution and taxonomic categories of these taxa and their relationship with continental evolutionary centers is made. For completeness, the intensity of total speciation and by phytogeographic district is reviewed.La flora cubana se caracteriza por la gran cantidad de endemismos que tiene. Estos taxones no tienen una distribución uniforme por todo el Archipiélago, sino que los mayores centros de acumulación están en las montañas. De ahí la importancia de conocer esos patrones de distribución para entender la flora en su conjunto. En este trabajo se hace un análisis de la diversidad vegetal en los grupos orográficos. Conjuntamente se hace un análisis sobre las categorías de distribución, taxonómicas de esos taxones y su relación con centros evolutivos continentales. Para completar se revisa la intensidad de especiación total y por distrito fitogeográfico

U-Pb dating and geochemical dataset of fracture-filling calcite veins from the Bóixols-Sant Corneli anticline (Southern Pyrenees)

U-Pb dating and geochemical analyzes (δ18O, δ13C, Δ47, 87Sr/86Sr and elemental composition) have been applied to fracture-filling calcite veins and host carbonates from the Bóixols-Sant Corneli anticline, which developed along the front of the Bóixols thrust sheet in the Southern Pyrenees. This robust dataset is used to determine: (i) the absolute timing of fracturing and mineralization from fluid flow; (ii) the age and duration of fold evolution; and (iii) the variations and implications of fluid behavior across the anticline, as has been described in the article “Spatio-temporal variation of fluid flow behavior along a fold: The Bóixols-Sant Corneli anticline (Southern Pyrenees) from U–Pb dating and structural, petrographic, and geochemical constraints – Marine and Petroleum Geology (2022) (Muñoz-López et al., 2022). In this new contribution, we present the raw data that have been analyzed and discussed in the related research article and, also, the whole elemental and REE composition of calcite veins and host carbonates that has not been published yet. These data may be used to unravel the age and origin of veins, to understand their sequential evolution in orogenic belts and to compare our results with those obtained in similar settings worldwide.</p

Association of candidate gene polymorphisms with chronic kidney disease : Results of a case-control analysis in the NEFRONA cohort

Chronic kidney disease (CKD) is a major risk factor for end-stage renal disease, cardiovascular disease and premature death. Despite classical clinical risk factors for CKD and some genetic risk factors have been identified, the residual risk observed in prediction models is still high. Therefore, new risk factors need to be identified in order to better predict the risk of CKD in the population. Here, we analyzed the genetic association of 79 SNPs of proteins associated with mineral metabolism disturbances with CKD in a cohort that includes 2,445 CKD cases and 559 controls. Genotyping was performed with matrix assisted laser desorption ionization-time of flight mass spectrometry. We used logistic regression models considering different genetic inheritance models to assess the association of the SNPs with the prevalence of CKD, adjusting for known risk factors. Eight SNPs (rs1126616, rs35068180, rs2238135, rs1800247, rs385564, rs4236, rs2248359, and rs1564858) were associated with CKD even after adjusting by sex, age and race. A model containing five of these SNPs (rs1126616, rs35068180, rs1800247, rs4236, and rs2248359), diabetes and hypertension showed better performance than models considering only clinical risk factors, significantly increasing the area under the curve of the model without polymorphisms. Furthermore, one of the SNPs (the rs2248359) showed an interaction with hypertension, being the risk genotype affecting only hypertensive patients. We conclude that 5 SNPs related to proteins implicated in mineral metabolism disturbances (Osteopontin, osteocalcin, matrix gla protein, matrix metalloprotease 3 and 24 hydroxylase) are associated to an increased risk of suffering CKD

Association of a single nucleotide polymorphism combination pattern of the Klotho gene with non-cardiovascular death in patients with chronic kidney disease

Chronic kidney disease (CKD) is associated with an elevated risk of all-cause mortality, with cardiovascular death being extensively investigated. However, non-cardiovascular mortality represents the biggest percentage, showing an evident increase in recent years. Klotho is a gene highly expressed in the kidney, with a clear influence on lifespan. Low levels of Klotho have been linked to CKD progression and adverse outcomes. Single nucleotide polymorphisms (SNPs) of the Klotho gene have been associated with several diseases, but studies investigating the association of Klotho SNPs with noncardiovascular death in CKD populations are lacking. The main aim of this study was to assess whether 11 Klotho SNPs were associated with non-cardiovascular death in a subpopulation of the National Observatory of Atherosclerosis in Nephrology (NEFRONA) study (n ¼ 2185 CKD patients). After 48 months of follow-up, 62 cardiovascular deaths and 108 non-cardiovascular deaths were recorded. We identified a high non-cardiovascular death risk combination of SNPs corresponding to individuals carrying the most frequent allele (G) at rs562020, the rare allele (C) at rs2283368 and homozygotes for the rare allele (G) at rs2320762 (rs562020 GG/AG þ rs2283368 CC/CT þ rs2320762 GG). Among the patients with the three SNPs genotyped (n ¼ 1016), 75 (7.4%) showed this combination. Furthermore, 95 (9.3%) patients showed a low-risk combination carrying all the opposite genotypes (rs562020 AA þ rs2283368 TT þ rs2320762 GT/TT). All the other combinations [n ¼ 846 (83.3%)] were considered as normal risk. Using competing risk regression analysis, we confirmed that the proposed combinations are independently associated with a higher fhazard ratio [HR] 3.28 [confidence interval (CI) 1.51-7.12]g and lower [HR 6 × 10- (95% CI 3.3 × 10--1.1 × 10-)] risk of suffering a non-cardiovascular death in the CKD population of the NEFRONA cohort compared with patients with the normal-risk combination. Determination of three SNPs of the Klotho gene could help in the prediction of non-cardiovascular death in CKD

Nurses' perceptions of aids and obstacles to the provision of optimal end of life care in ICU

Contains fulltext : 172380.pdf (publisher's version ) (Open Access

Endemismos vegetales cubanos presentes en las playas rocosas.

They were identified with the name of rocky beaches to the coasts formed by almost always limestone reefs, cavernous where the sea penetrates, whose effects are detected several kilometers away. These coastlines are covered with arid thickets on skeletal tropical brown soils. There, eight regions are identified in which wealth is determined in Cuban endemisms separated by distribution categories. In them, taxonomic wealth was determined in families, genres and infra-generic taxa, by distribution category and by Neotropical evolutionary centers where taxa are included. To this were added four non-taxonomic variables: intensity of speciation, index of biological aridity, elevation, and geographical length. With this information the correlation between variables, the similarity between regions, the families that characterize this vegetation, the degrees of biological aridity by territory and the predominant evolutionary groups was determined. The most interesting results were the predominance of taxa of the Chaco evolutionary group, the predominant families and their causes, the high degree of biological aridity of these regions, their occasional lack of coincidence with the climatic aridity and the causes that cause this anomaly.Se identificaron con el nombre de playas rocosas a las costas formadas por arrecifes casi siempre calizos, cavernosos por donde penetra el mar, cuyos efectos se detectan a varios kilómetros. Esas costas están cubiertas de matorrales áridos sobre suelos pardos tropicales esqueléticos. Allí se identifican ocho regiones en las cuales se determina la riqueza en endemismos cubanos separados por categorías de distribución. En ellas se determinó la riqueza taxonómica en familias, géneros y taxones infragenéricos, por categoría de distribución y por centros evolutivos neotropicales donde se incluyen los taxones. A esto se sumaron cuatro variables no taxonómicas: intensidad de la especiación, índice de aridez biológica, cota, y longitud geográfica. Con esa información se determinó la correlación entre variables, la semejanza entre regiones, las familias que caracterizan esta vegetación, los grados de aridez biológica por territorio y los grupos evolutivos predominantes. Los resultados más interesantes fueron la predominancia de taxones del grupo evolutivo chaqueño, las familias que predominan y sus causas, el alto grado de aridez biológica de estas regiones, su ocasional falta de coincidencia con la aridez climática y las causas que provocan esa anomalía

Clima wisconsiano en Cuba deducido por las características de los suelos

Se explica el origen de la Paleopedología como una consecuencia de la evolución de las concepciones sobre la estrecha relación clima-tipo de suelo; los tipos y propiedades de los suelos se pueden utilizar para establecer las condiciones climáticas y ambientales, bajo las cuales se han formado y evolucionado. Existen diferentes puntos de vista sobre la evolución climática de Cuba, durante el Cuaternario; se expone la historia de un debate de 25 años sobre este tema. Se muestra el esquema de la distribución de los climas de Cuba, durante el Wisconsin. Se enumeran los índices edáficos y geográficos utilizados en la conformación de ese esquema. Se dan otros rasgos climáticos y ambientales de Cuba en el período wisconsiano y el Holoceno Temprano. Durante el período glacial, en Cuba, existieron hasta 9 tipos diferentes de clima, con predominio de climas muy áridos en las llanuras. El clima árido se transformó, de manera abrupta, en un clima hiperpluvial que se prolongó hasta los 5 000 años AP