Past, present, and future of a tropical sounds collection from Colombia

Digital bioacoustic collections preserve important behavioural and ecological traits, as well as trackable evidence of the presence of species in space and time. Well-structured and open-source repositories provide valuable information for science and biodiversity conservation. Here, we introduce the Environmental Sound Collection – ‘Mauricio Álvarez-Rebolledo’ (Colección de Sonidos Ambientales IAvH-CSA) at Instituto Humboldt in Colombia, which is one of the most relevant natural sound repositories in South America. The collection was founded in 1998 as ‘Banco de Sonidos Animales (BSA)’ to document Colombian biodiversity and guide conservation actions, two aims that remain at the forefront of our daily work. After over 25 years, the collection has preserved more than 25,000 audio specimens from over 1,300 species. Here, we highlight the value of sound collections by presenting a historical overview of our collection and providing examples of its role in research and outreach. We also identify taxonomic and geographical gaps that need to be filled, analyse the impact of new technological advances on sound collections, and discuss the critical role of acoustics in the future of research and biodiversity conservation programmes.</p

El psicoanálisis, el amor y la guerra . memorias del II Seminario Latinoamericano de Psicoanálisis

La estructura de las presentes memorias consta de cinco partes. La primera responde a los artículos teóricos que sirvieron de referencia para el desarrollo del seminario "El amor Lacan", de Jean Allouch y "Subjetividad, amor y guerra", de Héctor Gallo. La segunda parte contiene la transcripción de la conferencia dictada por el doctor Héctor Gallo y el conversatorio del que participaron los doctores Jean Allouch y Héctor Gallo y que fue moderado por los psicoanalistas Fernando Morales (Colombia) y María Teresa López (Argentina). La tercera parte tiene las entrevistas a nuestros invitados, los doctores Jean Allouch y Héctor Gallo. La cuarta parte contiene los escritos que sirvieron de referencia para el desarrollo del primer conversatorio: una aproximación psicoanalítica a la guerra como síntoma social y una aproximación psicoanalítica al amor en tres actos: Freud, Lacan y Allouch, ambos preparatorios al seminario. Por último y como plus se incorpora de nuestro Primer Seminario Latinoamericano de Psicoanálisis (2007) la transcripción del conversatorio con el doctor Néstor Braunstein denominado “Café con el inconsciente”.Universidad de San Buenaventura - Cal

Functional Adhesiveness of the CX3CL1 Chemokine Requires Its Aggregation: ROLE OF THE TRANSMEMBRANE DOMAIN*S⃞

In its native form, the chemokine CX3CL1 is a firmly adhesive molecule promoting leukocyte adhesion and migration and hence involved, along with its unique receptor CX3CR1, in various inflammatory processes. Here we investigated the role of molecular aggregation in the CX3CL1 adhesiveness. Assays of bioluminescence resonance energy transfer (BRET) and homogeneous time-resolved fluorescence (HTRF) in transfected cell lines and in primary cells showed specific signals indicative of CX3CL1 clustering. Truncation experiments showed that the transmembrane domain played a central role in this aggregation. A chimera with mutations of the 12 central transmembrane domain residues had significantly reduced BRET signals and characteristics of a non-clustering molecule. This mutant was weakly adhesive according to flow and dual pipette adhesion assays and was less glycosylated than CX3CL1, although, as we demonstrated, loss of glycosylation did not affect the CX3CL1 adhesive potency. We postulate that cell surfaces express CX3CL1 as a constitutive oligomer and that this oligomerization is essential for its adhesive potency. Inhibition of CX3CL1 self-assembly could limit the recruitment of CX3CR1-positive cells and may be a new pathway for anti-inflammatory therapies