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1.
Telemed J E Health ; 2024 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-38597958

RESUMO

Objective: The SARS-CoV-2 pandemic and related lockdown periods generated an increase in the use of virtual care for mental health (MH). This study aimed to assess patient satisfaction with Telemental Health services (TMH) during first lockdown and factors related to their willingness to continue using this service. Methods: We conducted a cross-sectional survey of 364 MH outpatients from 9 centers in the Barcelona region (Spain), who received TMH between April 20 and May 22, 2020. We assessed sociodemographic and clinical characteristics, prior experience, and familiarity with technologies and satisfaction with TMH. Willingness to receive TMH after the lockdown was measured separately for telephone and videoconferencing. We performed descriptive statistics and bivariate and multivariate regression models to predict TMH willingness. Results: From 450 patients contacted, 364 were interviewed. Satisfaction with TMH was high (mean 9.24, standard deviation 0.07); 2.47% preferred only TMH visits after lockdown, 23.08% preferred mostly TMH visits, 50.82% accepted some TMH visits, and 23.63% would prefer in-person consultations. Female patients and those having received TMH during lockdown showed higher odds of willingness to receive TMH in the future, while patients unfamiliar with technologies showed lower odds. Concerning TMH through telephone, willingness was more likely in patients living with more persons. Videoconferencing willingness was more likely for people living with depression. Conclusions: TMH was well accepted during the first lockdown and patients were willing to maintain it after lockdown. Low familiarity with new technologies is an important barrier to TMH willingness, which needs to be addressed for appropriate implementation going forward.

2.
Plant Physiol ; 152(4): 1830-41, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20107025

RESUMO

Plant metabolism is highly coordinated with development. However, an understanding of the whole picture of metabolism and its interactions with plant development is scarce. In this work, we show that the deficiency in the plastidial glycolytic glyceraldehyde-3-phosphate dehydrogenase (GAPCp) leads to male sterility in Arabidopsis (Arabidopsis thaliana). Pollen from homozygous gapcp double mutant plants (gapcp1gapcp2) displayed shrunken and collapsed forms and were unable to germinate when cultured in vitro. The pollen alterations observed in gapcp1gapcp2 were attributed to a disorganized tapetum layer. Accordingly, the expression of several of the genes involved in tapetum development was down-regulated in gapcp1gapcp2. The fertility of gapcp1gapcp2 was rescued by transforming this mutant with a construct carrying the GAPCp1 cDNA under the control of its native promoter (pGAPCp1::GAPCp1c). However, the GAPCp1 or GAPCp2 cDNA under the control of the 35S promoter (p35S::GAPCp), which is poorly expressed in the tapetum, did not complement the mutant fertility. Mutant GAPCp isoforms deficient in the catalytic activity of the enzyme were unable to complement the sterile phenotype of gapcp1gapcp2, thus confirming that both the expression and catalytic activity of GAPCp in anthers are necessary for mature pollen development. A metabolomic study in flower buds indicated that the most important difference between the sterile (gapcp1gapcp2, gapcp1gapcp2-p35S::GAPCp) and the fertile (wild-type plants, gapcp1gapcp2-pGAPCp1::GAPCp1c) lines was the increase in the signaling molecule trehalose. This work corroborates the importance of plastidial glycolysis in plant metabolism and provides evidence for the crucial role of GAPCps in pollen development. It additionally brings new insights into the complex interactions between metabolism and development.


Assuntos
Arabidopsis/metabolismo , Gliceraldeído-3-Fosfato Desidrogenases/metabolismo , Plastídeos/enzimologia , Pólen/metabolismo , Arabidopsis/genética
3.
Evolution ; 60(10): 2056-63, 2006 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17133862

RESUMO

Ovule discounting denotes the reduction in the number of ovules available for cross-fertilization due to the interference of inferior pollen. Traditionally, ovule discounting has been discussed solely from the perspective of compromised outcrossing opportunities as a result of selfing, but the principle is more general. Here, we extend its applicability beyond the simple contrast between selfing and outcrossing by showing that, in the cryptically dioecious tree species Fraxinus ornus, ovule discounting through frequent outcrossing with inferior fathers also constitutes a substantial cost of mating. In F. ornus, hermaphrodites produce pollen capable of siring offspring, but these offspring are less viable than those sired by males and are inferred to produce few, if any, surviving progeny. In this paper, we used microsatellite markers to analyze the mating system and paternity in a wild population of F. ornus. We found that the effective number of sires per mother was low (N(ep) = 2.93 to 4.95), and that paternity was correlated among progeny sampled from the same mother, but not among progeny sampled from neighboring mothers. Despite the existence of a local spatial genetic structure (up to 30 m), we found no evidence of biparental inbreeding. There was negligible selfing by hermaphrodites, but they sired approximately one fourth of the seeds produced by other hermaphrodites. Given that these progeny are not inferred to reach reproductive maturity, this constitutes a substantial cost of ovule discounting in the broad sense. We discuss the possible reasons for why hermaphrodites invest resources into inferior pollen.


Assuntos
Flores/fisiologia , Fraxinus/fisiologia , Árvores/fisiologia , Fraxinus/genética , Pólen , Reprodução , Sementes/fisiologia , Árvores/genética
4.
Ann Bot ; 87(2): 157-177, 2001 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-32050734

RESUMO

Morphological characteristics were studied in two groups of closely related taxa of section Supinae , Linaria depauperata and L. supina , from eastern Spain. Vegetative, floral and seed characteristics were of little use in distinguishing between these taxa as the ranges for all the taxa studied overlapped. Flower colour could be used as a diagnostic character for some but not all of these taxa. Seed coat characters were of high taxonomic value, both when trying to distinguish among these two groups, and the taxa included within them, and also when establishing relationships among the taxa studied. Some differences were found in the indumentum distribution and density. Three types of trichomes were identified, two of them eglandular and common to all taxa. The third type of trichome was a simple gland, that varied in the number of cells in the stalk and gland. Trichome length and wall width of stalk cells allowed several groups of taxa to be distinguished. Similarity relationships among the samples studied are shown in a UPGMA phenogram. According to these results, two new species, L. cardonica and L. sulphurea , are described. L. arabiniana is conspecific with L. depauperata subsp. hegelmaieri . A key to identify the different taxa is provided.

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