Bovine gene polymorphisms related to fat deposition and meat tenderness

Leptin, thyroglobulin and diacylglycerol O-acyltransferase play important roles in fat metabolism. Fat deposition has an influence on meat quality and consumers' choice. The aim of this study was to determine allele and genotype frequencies of polymorphisms of the bovine genes, which encode leptin (LEP), thyroglobulin (TG) and diacylglycerol O-acyltransferase (DGAT1). A further objective was to establish the effects of these polymorphisms on meat characteristics. We genotyped 147 animals belonging to the Nelore (Bos indicus), Canchim (5/8 Bos taurus + 3/8 Bos indicus), Rubia Gallega X Nelore (1/2 Bos taurus + 1/2 Bos indicus), Brangus Three-way cross (9/16 Bos taurus + 7/16 Bos indicus) and Braunvieh Three-way cross (3/4 Bos taurus + 1/4 Bos indicus) breeds. Backfat thickness, total lipids, marbling score, ribeye area and shear force were fitted, using the General Linear Model (GLM) procedure of the SAS software. The least square means of genotypes and genetic groups were compared using Tukey's test. Allele frequencies vary among the genetic groups, depending on Bos indicus versus Bos taurus influence. The LEP polymorphism segregates in pure Bos indicus Nelore animals, which is a new finding. The T allele of TG is fixed in Nelore, and DGAT1 segregates in all groups, but the frequency of allele A is lower in Nelore animals. The results showed no association between the genotypes and traits studied, but a genetic group effect on these traits was found. So, the genetic background remains relevant for fat deposition and meat tenderness, but the gene markers developed for Bos taurus may be insufficient for Bos indicus

Thinking Outside a Less Intact Box: Thalamic Dopamine D2 Receptor Densities Are Negatively Related to Psychometric Creativity in Healthy Individuals

Several lines of evidence support that dopaminergic neurotransmission plays a role in creative thought and behavior. Here, we investigated the relationship between creative ability and dopamine D2 receptor expression in healthy individuals, with a focus on regions where aberrations in dopaminergic function have previously been associated with psychotic symptoms and a genetic liability to schizophrenia. Scores on divergent thinking tests (Inventiveness battery, Berliner Intelligenz Struktur Test) were correlated with regional D2 receptor densities, as measured by Positron Emission Tomography, and the radioligands [11C]raclopride and [11C]FLB 457. The results show a negative correlation between divergent thinking scores and D2 density in the thalamus, also when controlling for age and general cognitive ability. Hence, the results demonstrate that the D2 receptor system, and specifically thalamic function, is important for creative performance, and may be one crucial link between creativity and psychopathology. We suggest that decreased D2 receptor densities in the thalamus lower thalamic gating thresholds, thus increasing thalamocortical information flow. In healthy individuals, who do not suffer from the detrimental effects of psychiatric disease, this may increase performance on divergent thinking tests. In combination with the cognitive functions of higher order cortical networks, this could constitute a basis for the generative and selective processes that underlie real life creativity

Wegner on Hallucinations, Inconsistency, and the Illusion of Free Will. Some Critical Remarks

Wegner's argument on the illusory nature of conscious will, as developed in The Illusion of Conscious Will (2002) and other publications, has had major impact. Based on empirical data, he develops a theory of apparent mental causation in order to explain the occurrence of the illusion of conscious will. Part of the evidence for his argument is derived from a specific interpretation of the phenomenon of auditory verbal hallucinations as they may occur in schizophrenia. The aim of this paper is to evaluate the validity of the evidence on auditory verbal hallucinations as employed by Wegner. I conclude that auditory hallucinations do not provide solid evidence for Wegner's theory. Moreover, the phenomena in schizophrenia provide, in fact, an argument against part of Wegner's theory of apparent mental causation. © 2010 The Author(s)

Engaging students in paleontology: the design and implementation of an undergraduate-level blended course in Panama

Despite the fact that Latin-American countries present ideal environments to train young scientists, most of these countries lack local scientific capacity. Here I describe the design and implementation of an undergraduate-level blended course on paleontology. The course was taught in 2012 to 10 biology majors from the University of Panama and it had three main foci: (1) a design grounded in a theoretical framework that supports meaningful learning; (2) the application of concepts and skills to the region where the students live, making the learning experience relevant and authentic; and (3) a strong research and science-communication component that allowed students to experience real-life situations (i.e. those commonly faced by scientists throughout their careers). These components contributed synergistically to engage students with paleontology, a field not formally taught in their country. This work can be applied to different disciplines in science and to different levels in students’ scientific training

The poetics of vulnerability: creative writing among young adults in treatment for psychosis in light of Ricoeur’s and Kristeva’s philosophy of language and subjectivity

There is a growing interest in the application of creative writing in the treatment of mental illness. Nonpharmacological approaches have shown that access to poetic, creative language can allow for the verbalisation of illness experiences, as well as for self-expressions that can include other facets of the subject outside of the disease. In particular, creative writing in a safe group context has proven to be of particular importance. In this article, we present a pilot on a creative writing group for young adults in treatment for psychosis. We set the texts and experiences from the writing group in dialogue with Paul Ricoeur’s and Julia Kristeva’s philosophies on poetic language as meaning making and part of subject formation. The focus is on language as materiality and potentiality and on the patient’s inherent linguistic resources as founded in a group dynamic. As a whole, the project seeks to give an increased theoretical and empirical understanding of the potentiality of language and creativity for healing experiences, participation and meaning-making processes among vulnerable people. Furthermore, a practice founded in poetic language might critically address both the general and biomedical understanding of the subject and disease