ABSTRACT
El Biodentine es un material biocerámico y bioacti-vo que puede emplearse como sustituto activo de la dentina. Entre sus numerosos usos se incorpora su utilización como sellador del coágulo en los procedi-mientos endodónticos regenerativos, logrando me-jores propiedades con respecto al Gold standard. Se presenta la resolución clínica y radiográfica de tres situaciones clínicas, mediante la aplicación del proto-colo de los procedimientos endodónticos regenerati-vos, en los que se utilizó Biodentine como alternativa para el sellado del coágulo a nivel cérvico-radicular, en la obturación a nivel del límite amelocementario (AU)
Biodentine is a bio-ceramic and bioactive material that can be used as an active substitute for dentin. Its many uses include its use as a clot sealer in regenerative endodontic procedures, achieving better properties compared to the Gold standard. The clinical and radiographic resolution of three clinical situations is presented, by applying the protocol of regenerative endodontic procedures, where Biodentine was used as an alternative for sealing the clot at the cervical-radicular level in the obturation at the level of the cementoenamel limit (AU)
Subject(s)
Humans , Male , Female , Child , Biocompatible Materials/therapeutic use , Dentin , Regenerative Endodontics , Argentina , Schools, Dental , Ceramics , Dental Care for Children/methods , Dental Pulp Necrosis/therapyABSTRACT
Three decades ago, Acropora palmata was one of the main reef-building coral species throughout the Caribbean, forming an essential component of the structural complexity of shallow coral reef habitats. These colonies still provide microhabitats for settlement, food and shelter to many vertebrates and invertebrates. The recent decline of A. palmata has been followed by a significant loss in spatial heterogeneity and possibly in species diversity. Studies addressing whether dead and living stands of Acropora hold different fish and benthic assemblages are scarce. The status of Acropora colonies and their associated species were assessed in October 2012, at two reef zones of Cayo Sombrero, Venezuela. Visual censuses of fish abundance and the number of macrofaunal individuals were recorded for both live and dead zones. Living Acropora colonies had the lowest abundance (˂31%). In both zoned the fish community was dominated by damselfishes (˂53%) and wrasses (˂36%), the benthic macrofauna by peracarid crustaceans (˂40%) and polychaetes (˂38%). Fish and benthic communities were not correlated with the condition (live or dead) of the Acropora habitats; possibly branching structures provide the necessary shelter and protection no matter if they are dead or alive. More replication is necessary to test this unexpected result.
Hace tres décadas, Acropora palmata fue una de las principales especies de coral constructoras de arrecifes a lo largo del Caribe, formando un componente esencial de la complejidad estructural disponible en los hábitats arrecifales someros. Estas colonias todavía proveen microhábitats para el asentamiento, alimentación y refugio de muchas especies de vertebrados e invertebrados. El declive reciente de A. palmata ha sido precedido por una pérdida significativa de heterogeneidad espacial y se piensa que ésta reducción ha producido una disminución importante en la diversidad de especies. Los estudios señalan que las colonias muertas o vivas de Acropora que sostienen diferentes comunidades de bentos y de peces son escasas. El estado de las colonias de Acropora y sus especies asociadas fueron evaluadas en Octubre de 2012, en dos zonas arrecifales diferentes de Cayo Sombrero, Venezuela. Censos visuales de la abundancia de especies de peces y el número de individuos de la macrofauna fueron también registrados para ambas zonas, tanto vivas como muertas. Las colonias vivas presentaron la menor abundancia (˂31%). En ambos sitios la comunidad de peces fue dominada por los peces damiselas (˂53%) y lábridos (˂36%); la macrofauna bentónica por crustáceos peracáridos (˂40%) y poliquetos (˂38%). Las comunidades de peces y bentos no mostraron correlación con la condición (vivo o muerto) de los hábitats de Acropora; posiblemente las estructuras ramificadas proveen el refugio y protección necesario sin importar si están vivos o muertos. Una mayor replicación es necesaria para probar este resultado inesperado.
ABSTRACT
Foi avaliado o efeito da suplementação da glutamina em dietas contendo ingredientes de origem animal sobre o desempenho e a integridade intestinal de pintos de corte, criados até 21 dias de idade. Os tratamentos constituíram-se de combinações entre tipos de dieta, com ingredientes de origem vegetal ou vegetal+animal e suplementação de glutamina (0,0; 0,5; 1,0 e 2,0%). O delineamento foi em blocos ao acaso em arranjo fatorial 2x4, tipos de ração x percentagem de glutamina, com cinco repetições e 12 pintos por unidade experimental. Não houve efeito da interação tipo de dieta versus suplementação de glutamina sobre o desempenho, e os tratamentos não influenciaram o desempenho de pintos de corte. Houve efeito quadrático da suplementação de glutamina sobre o coeficiente de digestibilidade da proteína bruta. A suplementação com glutamina aumentou altura de vilos e profundidade de cripta no duodeno. A utilização de produtos de origem animal em dietas para pintos na fase inicial não prejudica o desempenho, e a inclusão de glutamina melhora a integridade intestinal.
The effect of glutamine supplementation in diets formulated with animal by-products on the performance and integrity of the small intestine of broiler chicks up to 21 days of age was evaluated. The treatments were the combination of types of diets (only with ingredients from a vegetal source or vegetal plus animal source) and levels of glutamine (0.0; 0.5; 1.0 and 2.0%). The experimental design was randomized blocks in a 2x4 factorial scheme (kinds of diets x levels of glutamine), with five replicates and 12 birds per experimental unit. No interaction between diets and glutamine supplementation and treatment effects on the performance traits were observed during the chick starter phase. There was a quadratic effect of glutamine on the crude protein digestibility coefficient. Birds supplemented with glutamine diets showed higher villus height and crypt depth in the duodenum. Broiler diets formulated with animal ingredients have no effect on chick performance during the initial phase, and glutamine supplementation improved the small intestine integrity.
Subject(s)
Animals , Dietary Supplements , Glutamine/adverse effects , Amino Acids , Birds , Flour/analysis , Plants/adverse effectsABSTRACT
El trabajo indaga conceptualmente en algunas ideas freudianas sobre el dolor mental. Se establece una comparación entre estas nociones y ciertos hallazgos recientes en el campo de la neurociencia social, es decir aquellos estudios de los procesos cerebrales que hacen posible a las personas entender a otros, entenderse a sí mismos y conducirse por el mundo social de manera efectiva. Específicamente se investigan las estructuras y los efectos neurobiológicos que se correlacionan con experiencias sociales dolorosas ("dolor social"), como la exclusión y el abandono. este cruce interdisciplinario entre ciencias sociales, neurociencias y psicoanálisis muestra sorprendentes correspondencias que permiten una mayor comprensión de los fenómenos que subyacen biológicamente a las interrelaciones humanas.
The paper explores from the conceptual point of view some Freudian ideas about mental pain. A comparison is established between these notions and some recent findings in the area of social neuroscience, those studies related to the cerebral processes that enable people to understand each other, understand them selves and interact effectively in the social world. Specifically it investigates the neurobiological structures and effects that correlate with painful social experiences ("Social pain"), like exclusion and abandonment. This interdisciplinary intersection between social sciences, neuroscience and psychoanalysis shows amazing correspondences, which allows a major understanding of the biological phenomena that underlie human relationships.
Subject(s)
Humans , Neurobiology , Neurosciences , Pain , PsychoanalysisABSTRACT
Recent advances in the neuroscience of classical fear conditioning from both rodent and human studies are beginning to be translated to the psychiatry clinic. In particular, our understanding of fear extinction as a form of "safety learning" holds promise for the treatment of anxiety disorders in which extinction learning is thought to be compromised. The Department of Psychiatry at the UPR, School of Medicine promotes the development of innovative strategies for treating mental health problems. Given the burden resulting from anxiety disorders in Puerto Rico, and the lack of evidence-based treatment practices, there is a pressing need for a future center specializing in the treatment of anxiety related disorders. This center would also serve research and training functions, with the ultimate goal of translating extinction research into clinical practice. This review presents the current developments in extinction research and its relationship to anxiety disorders and treatment. We also analyze the available literature on the epidemiology of anxiety disorders and the existing evidence-based treatments for these conditions.
Subject(s)
Animals , Humans , Anxiety Disorders , Fear , Biomedical Research , Fear/psychology , Psychiatry , Puerto Rico , Anxiety Disorders/etiology , Anxiety Disorders/therapyABSTRACT
El autor se propone investigar conceptualmente el lugar que ocupan las representaciones mentales dentro de algunos marcos teóricos psicoanalíticos recientes. Se indaga sucintamente en los orígenes filosóficos y psicoanalíticos de la idea de representación, haciéndose ésta indisociable del problema de la separación sujeto/objeto, propio de la ciencia positivista. Esta situación ha experimentado cambios fundamentales en el siglo pasado, que se han ido reflejando paulatinamente al interior del psicoanálisis y hacen más comprensible ciertas divergencias teóricas actuales. Se toma como ejemplo el fenómeno de la transferencia para entender cómo se reflejan estas diferencias teóricas en la comprensión psicoanalítica de los pacientes. Se estudia cómo estos cambios han permitido un acercamiento epistemológico del psicoanálisis a otras ciencias, en especial con las neurociencias.
Subject(s)
Humans , Knowledge , Psychoanalysis , Transference, PsychologyABSTRACT
Voluntary screening has shown to be an effective way to identify depressive symptoms and to provide adequate treatment. If a screening tool was to be used in a general Puerto Rican population, it should be validated in Spanish and be consistent with the particular response style of this group. The main objective of this research study is to assess if the Spanish translation of the Zung SDS is adequate to screen for depression in Puerto Ricans, and if the translation considers the sociocultural peculiarities of this group. Although the Zung SDS is presented as a self-report scale and was found to be reliable by Alpha coefficient and manageable by both the questioner and the participant, the Spanish version used in this activity presented interpretation difficulties. It is recommendable that a Spanish translation of this scale should be developed taking into consideration the particularities of the Puerto Rican population. The use of other screening tools that have already been validated as being culturally sensitive to Puerto Ricans could also be considered.