1,720,989 research outputs found
Study of expression and role of Metabotropic Glutamate Receptors in Human Acute Myeloid Leukemia cell lines and involvement of L1-CAM in migration of mGluR1+ mouse melanoma cell lines
Full text linkmGluRs are a family of G-coupled protein receptors with widespread expression in the central nervous system (CNS), some normal tissues, and in various cancers. The predominant functions of mGluRs in the CNS are modulating presynaptic neurotransmission but in cancers, mGluRs are involved in regulating cell proliferation.
Acute Myeloid Leukemia (AML) is a clonal, malignant disease of hematopoietic tissue and is the most common type of acute leukemia in adults and the elderly. Despite the wide number of drugs available to treat this disease, there are many unmet needs in AML therapy; relapsed or refractory patients or those unable to receive intensive chemotherapy display a poor prognosis.
Skin cancer is described as the abnormal multiplication of skin cells, which is frequently detected in sun-exposed regions. Basal cell carcinoma, squamous cell carcinoma, Merkel cell carcinoma, cutaneous lymphoma, Kaposi sarcoma, and melanoma are the six primary forms. Melanoma is the most severe form of skin cancer and is caused by melanocyte transformation. In the United States, invasive melanoma is expected to account for about 100,000 new cases and over 7,000 fatalities from skin cancer in 2022.
In this study, there are two distinct studies, in one, we evaluated metabotropic glutamate receptors (mGluRs) to assess if one or more of mGluRs may be a putative therapeutic target in AML. We have found a novel, previously unknown role of mGluRs in AML. The second study is to use mGluR1+ mouse melanoma cell lines to determine if the presence of L1-NCAM (CD171), a neural cell adhesion molecule 1 is involved in cell migration as shown previously in glioblastoma cell
A preclinical model of Post-Traumatic Stress Disorder (PTSD) capturing both the emotional and cognitive features of the disease: behavioral validation
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Toward understanding the neurobiology of social attachment: role of estrogen receptors in the medial amygdala
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Glia-neuron interplay in health and disease: pharmacological evidence for this required teamwork
Full text linkGlia is a cell population highly present in the central nervous system (CNS) with the purpose, among other functions, to support neurons. In fact, many of these cells are closely in contact with neurons, actively participating to homeostatic support and synaptic transmission. For instance, astrocytes are considered integral part of the tripartite synapse. By this way, recent discoveries made possible to change perspective regarding the neuro-centric view of chronic neurodegenerative disorders, expanding the horizon to new players involved in the physiological and/or pathologic processes that take place in CNS. Better understanding the contribution of non-neuronal cells to these processes will be crucial for the development of new therapeutic approaches to counteract neurodegeneration.
Moving from these assumptions, my studies focused on evaluating the role of glial cells in inducing and triggering the inflammatory processes during neurodegeneration and, in particular, on the events that lead these cells to an activated state named reactive gliosis. Moreover, the consequences caused by these processes on neuronal survival, and in a macroscopic manner, on learning and memory, were evaluated.
To achieve such goals, I worked with different preclinical models of AD, both in vitro and in vivo, attempting to recreate at best the pathological hallmarks of pathology. In addition, since the crucial role of glial cells in the maintenance of brain homeostasis and their close connection with neuronal functioning and survival, the action of different molecules on neuroinflammation, as well as on neuronal survival, were tested
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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