65 research outputs found
Engaging with terminology in the multilingual classroom:Teachersâ practices for bridging the gap between L1 lectures and English reading
In some academic settings where English is not the first language it is nonetheless common for reading to be assigned in English, and the expectation is often that students will acquire subject terminology incidentally in the first language as well as in English as a result of listening and reading. It is then a prerequisite that students notice and engage with terminology in both languages. To this end, teachersâ classroom practices for making students attend to and engage with terms are crucial for furthering studentsâ vocabulary competence in two languages. Using transcribed video recordings of eight undergraduate lectures from two universities in such a setting, this paper provides a comprehensive picture of what teachers âdoâ with terminology during a lecture, i.e., how terms are allowed to feature in the classroom discourse. It is established, for example, that teachers nearly always employ some sort of emphatic practice when using a term in a lecture. However, the repertoire of such practices is limited. Further, teachers rarely adapt their repertoires to cater to the special needs arguably required in these settings, or to exploit the affordances of multilingual environments
Reworking research: interactions in academic articles and blogs
The blog is an increasingly familiar newcomer to the panoply of academic genres, offering researchers the opportunity to disseminate their work to new and wider audiences of experts and interested lay people. This digital medium, however, also brings challenges to writers in the form of a relatively unpredictable readership and the potential for immediate, public and potentially hostile criticism. To understand how academics in the social sciences respond to this novel rhetorical situation, we explore how they discoursally recontextualise in blogs the scientific information they have recently published in journal articles. Based on two corpora of 30 blog posts and 30 journal articles with the same authors and topics, we examine the ways researchers carefully reconstruct a different writer persona and relationship with their readers using stance and engagement (Hyland, 2005). In addition to supporting the view that the academic blog is a hybrid genre situated between academic and journalistic writing, we show how writersâ rhetorical choices help define different rhetorical contexts
Alterations in the neuropeptide galanin system in major depressive disorder involve levels of transcripts, methylation, and peptide
Major depressive disorder (MDD) is a substantial burden to
patients, families, and society, but many patients cannot be
treated adequately. Rodent experiments suggest that the
neuropeptide galanin (GAL) and its three G protein-coupled
receptors, GAL1â3, are involved in mood regulation. To explore
the translational potential of these results, we assessed the
transcript levels (by quantitative PCR), DNA methylation status
(by bisulfite pyrosequencing), and GAL peptide by RIA of the GAL
system in postmortem brains from depressed persons who had
committed suicide and controls. Transcripts for all four members
were detected and showed marked regional variations, GAL and
galanin receptor 1 (GALR1) being most abundant. Striking
increases in GAL and GALR3 mRNA levels, especially in the
noradrenergic locus coeruleus and the dorsal raphe nucleus, in
parallel with decreased DNA methylation, were found in both male
and female suicide subjects as compared with controls. In
contrast, GAL and GALR3 transcript levels were decreased, GALR1
was increased, and DNA methylation was increased in the
dorsolateral prefrontal cortex of male suicide subjects,
however, there were no changes in the anterior cingulate cortex.
Thus, GAL and its receptor GALR3 are differentially methylated
and expressed in brains of MDD subjects in a region- and sex-
specific manner. Such an epigenetic modification in GALR3, a
hyperpolarizing receptor, might contribute to the dysregulation
of noradrenergic and serotonergic neurons implicated in the
pathogenesis of MDD. Thus, one may speculate that a GAL3
antagonist could have antidepressant properties by disinhibiting
the firing of these neurons, resulting in increased release of
noradrenaline and serotonin in forebrain areas involved in mood
regulation
Neuropeptide and Small Transmitter Coexistence: Fundamental Studies and Relevance to Mental Illness
Neuropeptides are auxiliary messenger molecules that always co-exist in nerve cells with one or more small molecule (classic) neurotransmitters. Neuropeptides act both as transmitters and trophic factors, and play a role particularly when the nervous system is challenged, as by injury, pain or stress. Here neuropeptides and coexistence in mammals are reviewed, but with special focus on the 29/30 amino acid galanin and its three receptors GalR1, -R2 and -R3. In particular, galanin's role as a co-transmitter in both rodent and human noradrenergic locus coeruleus (LC) neurons is addressed. Extensive experimental animal data strongly suggest a role for the galanin system in depression-like behavior. The translational potential of these results was tested by studying the galanin system in postmortem human brains, first in normal brains, and then in a comparison of five regions of brains obtained from depressed people who committed suicide, and from matched controls. The distribution of galanin and the four galanin system transcripts in the normal human brain was determined, and selective and parallel changes in levels of transcripts and DNA methylation for galanin and its three receptors were assessed in depressed patients who committed suicide: upregulation of transcripts, e.g., for galanin and GalR3 in LC, paralleled by a decrease in DNA methylation, suggesting involvement of epigenetic mechanisms. It is hypothesized that, when exposed to severe stress, the noradrenergic LC neurons fire in bursts and release galanin from their soma/dendrites. Galanin then acts on somato-dendritic, inhibitory galanin autoreceptors, opening potassium channels and inhibiting firing. The purpose of these autoreceptors is to act as a 'brake' to prevent overexcitation, a brake that is also part of resilience to stress that protects against depression. Depression then arises when the inhibition is too strong and long lasting - a maladaption, allostatic load, leading to depletion of NA levels in the forebrain. It is suggested that disinhibition by a galanin antagonist may have antidepressant activity by restoring forebrain NA levels. A role of galanin in depression is also supported by a recent candidate gene study, showing that variants in genes for galanin and its three receptors confer increased risk of depression and anxiety in people who experienced childhood adversity or recent negative life events. In summary, galanin, a neuropeptide coexisting in LC neurons, may participate in the mechanism underlying resilience against a serious and common disorder, MDD. Existing and further results may lead to an increased understanding of how this illness develops, which in turn could provide a basis for its treatment
Association between anxiety and non-coding genetic variants of the galanin neuropeptide
Galanin, an inhibitory neuropeptide and cotransmitter has long been known to co-localize with noradrenaline and serotonin in the central nervous system. Several human studies demonstrated altered galanin expression levels in major depressive disorder and anxiety. Pharmacological modulation of galanin signaling and transgenic strategies provide further proof for the involvement of the galanin system in the pathophysiology of mood disorders. Little is known, however, on the dynamic regulation of galanin expression at the transcriptional level. The aim of the present study was to seek genetic association of non-coding single nucleotide variations in the galanin gene with anxiety and depression.Six single nucleotide polymorphisms (SNP) occurring either in the regulatory 5' or 3' flanking regions or within intronic sequences of the galanin gene have been genotyped with a high-throughput TaqMan OpenArray qPCR system in 526 healthy students (40% males). Depression and anxiety scores were obtained by filling in the Hospital Anxiety and Depression Scale (HADS) questionnaire. Data were analyzed by ANCOVA and Bonferroni correction was applied for multiple testing. Linkage disequilibrium (LD) analysis was used to map two haploblocks in the analyzed region.A single-locus and a haplotype genetic association proved to be statistically significant. In single-marker analysis, the T allele of the rs1042577 SNP within the 3' untranslated region of the galanin gene associated with greater levels of anxiety (HADS scores were 7.05±4.0 vs 6.15±.15; p = 0.000407). Haplotype analysis revealed an association of the rs948854 C_rs4432027_C allele combination with anxiety [F(1,1046) = 4.140, p = 0.042141, η2 = 0.004, power = 0.529]. Neither of these associations turned out to be gender-specific. These promoter polymorphisms are supposed to participate in epigenetic regulation of galanin expression by creating potentially methylatable CpG dinucleotides. The functional importance of the rs1042577_T allele remains to be elucidated
Pot, kettle: Nonliteral titles arenât (natural) science
© 2020 The Author. Published by MIT Press. This is an open access article available under a Creative Commons licence.
The published version can be accessed at the following link on the publisherâs website: https://doi.org/10.1162/qss_a_00078Researchers may be tempted to attract attention through poetic titles for their publications,
but would this be mistaken in some fields? Whilst poetic titles are known to be common in
medicine, it is not clear whether the practice is widespread elsewhere. This article
investigates the prevalence of poetic expressions in journal article titles 1996-2019 in 3.3
million articles from all 27 Scopus broad fields. Expressions were identified by manually
checking all phrases with at least 5 words that occurred at least 25 times, finding 149 stock
phrases, idioms, sayings, literary allusions, film names and song titles or lyrics. The
expressions found are most common in the social sciences and the humanities. They are also
relatively common in medicine, but almost absent from engineering and the natural and
formal sciences. The differences may reflect the less hierarchical and more varied nature of
the social sciences and humanities, where interesting titles may attract an audience. In
engineering, natural science and formal science fields, authors should take extra care with
poetic expressions, in case their choice is judged inappropriate. This includes interdisciplinary
research overlapping these areas. Conversely, reviewers of interdisciplinary research
involving the social sciences should be more tolerant of poetic licens
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