The lamellate cells of amphioxus have round nuclei, and cytoplasm with many mitochondria and a large amount of glycogen. Each of these cells projects a highly modified, branched cilium into the central canal, where it characteristically forms lamellar structures. Primary branches and secondary lamellae often contain accessory microtubules that are not derived from the axonema. The functional and evolutionary significance of this cell type is discussed in relation to the ciliary photoreceptors found in other chordates.

In patients without clinical atherosclerotic disease, cardiovascular risk factors are associated with impaired FMD, CFR and increased IMT. Even though a correlation between these changes was found, they showed different dependence on cardiovascular risk factors and with global risk, IMT being the best correlated with the Framingham score.

ResumenEl presente artículo muestra los resultados de una encuesta de opinión pública acerca del 11 de septiembre de 1973 y el Régimen Militar, aplicada a 792 personas de la Región Metropolitana. La muestra contempló participantes de distintas orientaciones ideológicas y de tres generaciones políticas: quienes cumplieron 18 años antes de 1973, los que lo hicieron entre 1974 y 1989, y los que llegaron a esa edad a partir de 1990. Los resultados confirman que se trata de una fecha que posee importancia subjetiva para la mayoría de las personas. Los análisis revelaron que las diferencias generacionales son relativamente menores. La posición ideológica subsiste como un factor fuertemente diferenciador del recuerdo que se tiene sobre este período de la historia chilena, aunque también se constataron convergencias inesperadas entre personas de distintas posiciones. El 11 de septiembre de 1973 es el hecho histórico ampliamente considerado en Chile como el más significativo de la segunda mitad del siglo XX y, posiblemente, de todo ese siglo. A casi treinta años de ese día, esta fecha sigue teniendo vigencia en la política nacional, los medios de comuni-* Este trabajo se basa en una encuesta llevada a cabo en el marco de un proyecto financiado por el Fondo Nacional de Investigación Científica y Tecnológica (FONDECYT #199-0546).

When the three age groups were compared,the AUROC curve for CCI was significantly larger for patients aged < 65 years(p < 0.001) for both in-hospital and 1-year mortality. Conclusion: There were no differences in the clinical presentation of IE between the groups. Age ≥ 80 years, high comorbidity (measured by CCI),and non-performance of surgery were independent predictors of mortality in patients with IE.CCI could help to identify those patients with IE and surgical indication who present a lower risk of in-hospital and 1-year mortality after surgery, especially in the < 65-year group.

L-amB induction treatment improves survival in patients with PVE-C. Medical treatment followed by long-term maintenance fluconazole may be the best treatment option for frail patients.

Aims Patients with significant tricuspid regurgitation (TR) addressed according the new classification in torrential TR may have different prognosis compared with just severe TR patients. We sought to determine distribution and mechanism of consecutive severe TR patients, in accordance with aetiology and severity by applying the new proposed classification scheme and their long-term outcomes. Methods and results Between January and December 2013, 249 patients with significant TR referred to the cardiac imaging unit (mean age 79.9 ± 10.2 years; 29.8% female) were included. Patients were divided according to aetiology in six groups, and TR severity was reclassified into severe, massive, and torrential TR. The follow-up period was of 313 ± 103 days. When considering cardiovascular mortality, patients in the massive/torrential group showed the highest number of events (P < 0.007). Patients with TR due to pulmonary diseases had the worst prognosis according to different aetiology. Noteworthy, the best predictors for the combined endpoint [cardiovascular mortality and readmission admission for heart failure (HF)] were TR severity according to the new classification [hazard ratio (HR) 2.48, 95% confidence interval (CI) 1.25–4.93] and clinical scores such as New York Heart Association classification and congestive status (HR 1.78, 95% CI 1.28–2.49; HR 2.08, 95% CI 1.06–4.06, respectively). Conclusion Patients with massive/torrential TR and patients with comorbidities, especially pulmonary disease, were identified as populations at higher risk of death and readmission for HF. New classification scheme and clinical assessment may establish who may benefit the most of intensive therapeutic treatments and intervention on the tricuspid valve.

Se presentan los avances de un estudio sobre percepción de integración social y normativa en estudiantes de cuarto año de educación media de Santiago (N = 343). Se analizan los resultados de un cuestionario sobre anomia y alienación psicosocial, validado en un estudio análogo realizado en 1989. La replicación en 2007 contribuye a la caracterización de la experiencia de integración social y normativa en los jóvenes de hoy, así como al análisis de sus transformaciones casi 20 años después. Los resultados muestran que no existe una clara diferencia en los niveles de anomia y alienación, respecto a los de 1989.

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