Resistencia a Tuta absoluta en una entrada de la especie silvestre de tomate Solanum pimpinellifolium

2 páginas, 1 figura, 1 tabla.-- Artículo publicado en la revista profesional de sanidad vegetal.-- et al.[EN]: We previously found resistance to pests (twospotted spider mite and whitefly) based on type IV glandular trichomes and acylsucrose production in an accession of the wild tomato species S. pimpinellifolium from the germplasm collection at the Experimental Station La Mayora – CSIC. Resistance to the South American tomato pinworm of that accession and plant materials derived from it was investigated in greenhouse conditions at CNPH (Brasilia, Brazil) and, when Tuta absoluta was introduced into Spain, at Exp. Sta. La Mayora (Málaga, southern Spain). Genotypes carrying type IV glandular trichomes showed reduced pest damage, especially on young, apical leaves. Possibility for control of Tuta by the utilization of resistant tomato cultivars looks forward to future breeding programmes for the trait.[ES]: Una entrada de la especie silvestre de tomate S. pimpinellifolium del banco de germoplasma de la Estación Experimental La Mayora-CSIC presenta resistencia a plagas (araña roja y mosca blanca) merced a sus tricomas glandulares de tipo IV y producción de acilsacarosas. Con el fin de estudiar si esta entrada y otros genotipos de tomate de ella derivados eran también resistentes a T. absoluta, se realizaron experimentos en condiciones de invernadero en CNPH (Brasilia, Brasil) y, una vez que Tuta se introdujo en España, en la E.E. La Mayora (Algarrobo, Málaga). Los genotipos con tricomas de tipo IV sufrieron menores daños por la plaga, especialmente en las hojas apicales, más jóvenes. La posibilidad del control de Tuta mediante la utilización de variedades resistentes queda abierta a futuros programas de mejora genética del carácter.Trabajo financiado por MICINN-FEDER (Proyecto AGL2007-66760-C02-02/AGR).Peer reviewe

Communication, Public Opinion, and Democracy: New Challenges

This essay addresses the relationship between communication, public opinion, and democracy, which is evident in Athenian democracy. It briefly considers the complexity of the concept of public opinion, and how it was understood as a political phenomenon accepted in general thinking and political action, as a consequence of the democratic dynamism originated by the printing press. After briefly considering some of the most relevant ideas about this relationship throughout the 19th century, this essay discusses the main attitudes that emerged in the face of public opinion after the First World War, from which the most relevant theories about the effects of media on opinion, behaviours, and action begun to be developed. The study takes into account the development of an empirical science of public opinion, linked to scientific opinion surveys. It summarises how the investigation of the effects of the media goes through a stage in which they are considered irrelevant, until some studies – especially the theories of agenda setting and the spiral of silence– recovered the idea of the powerful effects of the media. Finally, the essay addresses the new challenges posed by the disenchantment with democracy, the loss of credibility of the media, and the way of understanding communication, at a time in which digital technology has facilitated the creation of social media, causing a situation described as the post-truth era, in which the global need for information becomes more evident. The new challenges affect the political science, research on public opinion, and the science of communication, which requires a foundation of greater consistency than the current one

Effect of Oral Nutritional Supplements with Sucromalt and Isomaltulose versus Standard Formula on Glycaemic Index, Entero-Insular Axis Peptides and Subjective Appetite in Patients with Type 2 Diabetes: A Randomised Cross-Over Study

Oral diabetes-specific nutritional supplements (ONS-D) induce favourable postprandial responses in subjects with type 2 diabetes (DM2), but they have not been correlated yet with incretin release and subjective appetite (SA). This randomised, double-blind, cross-over study compared postprandial e ects of ONS-D with isomaltulose and sucromalt versus standard formula (ET) on glycaemic index (GI), insulin, glucose-dependent insulinotropic polypeptide (GIP), glucagon-like peptide 1 (GLP-1) and SA in 16 individuals with DM2. After overnight fasting, subjects consumed a portion of supplements containing 25 g of carbohydrates or reference food. Blood samples were collected at baseline and at 30, 60, 90, 120, 150 and 180 min; and SA sensations were assessed by a visual analogue scale on separate days. Glycaemic index values were low for ONS-D and intermediate for ET (p < 0.001). The insulin area under the curve (AUC0–180 min) (p < 0.02) and GIP AUC (p < 0.02) were lower after ONS-D and higher GLP-1 AUC when compared with ET (p < 0.05). Subjective appetite AUC was greater after ET than ONS-D (p < 0.05). Interactions between hormones, hunger, fullness and GI were found, but not within the ratings of SA; isomaltulose and sucromalt may have influenced these factor

Association between the Mediterranean diet and metabolic syndrome with serum levels of miRNA in morbid obesity

Background: The Mediterranean diet (MD) could be involved in the regulation of different miRNAs related to metabolic syndrome (MS). Methods: We analyzed the serum level of mir-let7a-5p, mir-21, mir-590, mir-107 and mir-192 in patients with morbid obesity and its association with the MD and MS. Results: There is an association between the adherence to MD and higher serum levels of mir-590. Mir-590 was lower in those patients who consumed >2 commercial pastries/week. Mir-let7a was lower in those who consumed ≥1 sweetened drinks, in those who consumed ≥3 pieces of fruit/day and in those who consumed less red than white meat. A lower mir-590 and mir-let7a, and a higher mir-192 level, were found in patients who met the high-density lipoprotein cholesterol (HDL) criterion of MS. A higher mir-192 was found in those patients who met the triglyceride criterion of MS and in those with type 2 diabetes (T2DM). Conclusions: There is an association between specific serum levels of miRNAs and the amount and kind of food intake related to MD. Mir-590 was positively associated with a healthy metabolic profile and type of diet, while mir-192 was positively associated with a worse metabolic profile. These associations could be suggestive of a possible modulation of these miRNAs by food

Validez de predicción de un cuestionario de conocimientos y actitudes hacia la medicina familiar

ResumenObjetivoconocer la validez de predicción de un cuestionario que evalúa los conocimientos y las actitudes de los estudiantes de medicina hacia la medicina familiar (mf).Material y métodoestudio de cohorte; los sujetos de estudio fueron estudiantes matriculados en una asignatura de Atención Primaria (ap) entre 2005 y 2006, que se graduaron en 2010 y eligieron especialidad en 2011. Se diseñó un cuestionario con 34 preguntas cerradas. A los estudiantes se les invitó a contestar antes y después de cursar ap, así como a los matriculados en el sexto curso (2009-2010). Se registró la especialidad que eligieron; para calcular la validez predictiva del cuestionario se estimó su sensibilidad y especificidad, analizando las curvas cor (características operativas del receptor).Resultadosrespondieron el cuestionario 44 estudiantes antes de cursar la asignatura y 79 después. Al final del sexto curso contestaron 76. El área bajo la curva cor fue, respectivamente, 0.299 (ic 95%: 0.094-0.504), 0.482 (ic 95%: 0.280-0.684) y 0.688 (ic 95%: 0.282-1.093). Solamente en el último caso la curva cor estaba por encima de la diagonal. El mejor punto de corte en este caso fue 31, con sensibilidad=0.75 y especificidad=0.714.Conclusionesel cuestionario tiene una deficiente validez de predicción en relación con la elección de la mf. Sólo mejora en el último curso de la licenciatura.SummaryObjectiveto learn about the validity of prediction of a questionnaire that assesses knowledge and attitudes of students of medicine towards Family Medicine (fm).Material and methodscohort study; the studied individuals were students enrolled in a Primary Care course (pc) between 2005 and 2006, who graduated in 2010 and chose a specialty in 2011. It was designed a questionnaire with 34 closed questions. Students were invited to answer before and after taking the pc course, as well as those students enrolled in the sixth course (2009-2010). The specialty chosen was registered; to calculate the predictive validity of the questionnaire, their sensitivity and specificity was estimated, analyzing the roc (receiver operating characteristic) curves.Resultsthe questionnaire was answered by 44 students before studying the course and 79 after studying it. At the end of the sixth course, 76 students answered the questionnaire. The area under the roc curve was, respectively, 0.299 (ic 95%: 0.094-0.504), 0.482 (ic 95%: 0.280-0.684) and 0.688 (ic 95%: 0.282-1.093). Only in the latter case the curve roc was above the diagonal. The best cut-off point was 31, with sensitivity=0.75 and specifcity=0.714.Conclusionsthe questionnaire has a poor validity of prediction concerning the choice of fm. It only improves during the last year of the degree