1,721,057 research outputs found
On the complexity issue from neuroscience to economics: scatter-based ranks’ estimation
No full textWe set up the notion of neuron morphometric complexity, with the goal of quantify the degree of similarity vs. dissimilarity (i.e. homogeneity vs. heterogeneity) of a set of neurons located in close proximity with one another in a specific brain area, the motor cortex, the region of the cerebral cortex involved in the control and execution of voluntary movements. To illustrate the relevance of this approach we present a study aimed to estimate the neuronal cell complexity and rank the morphometric complexity motor cortical complexity across different mammalian species. Moreover, we compare the structural organization of the cerebral motor cortex across different mammalian species, of the horse with that of and selected primate species like chimpanzee and monkey. We highlight that assessment of neuronal cell complexity can be effectively done by using a suitable measure of statistical dispersion such as the mean absolute deviation – MAD.
In many different research fields, this concept of complexity has captured the interest of researchers and practitioners such as economists. Several scientific works have been dedicated to the study of economic complexity, both from the theoretical and the empirical point of view. Therefore today this issue is a real research area, rich of contributions and ideas. The importance of this topic is explained by the assumption that growth and development of a country mainly depend on the capabilities (human and physical capital, legal system, institutions, etc.) required to produce varied and sophisticated goods. Machinery and some types of chemicals are highly sophisticated goods; row materials and agricultural products are unsophisticated goods. In other words economic development depends on economic complexity
Atlante illustrato di anatomia del bovino
No full textL'atlante topografico illustrato Bovine Anatomy è il terzo volume di una serie dedicata all'anatomia degli animali domestici. La prima edizione di Atlas and Textbook of the Anatomy of the Dog risale a 20 anni fa, seguita a distanza di 8 anni dal secondo volume Anatomy of the Horse. Il notevole successo riscontrato dalla traduzione di questi volumi e la mancanza di un testo analogo di anatomia del bovino ci ha spinto a intraprendere questo progetto e proporre questo Atlas and Textbook of Bovine Anatomy. Le caratteristiche anatomiche del bovino sono presentate allo studente con un approccio di tipo topografico. L'anatomia speciale è riassunta nelle tabelle dei muscoli, linfonodi e nervi con riferimenti alle pagine del testo ed i riferimenti di anatomia comparata sono limitati al cavallo e al cane. Il testo vuole essere unvalido approccio all'anatomia degli animali. Lo sforzo degli Autori si è focalizzato sulla preparazione di un testo chiaro con riferimenti grafici immediati indirizzato ai professionisti del settore ma anche a chi si occupa di ricerca e di morfologia in generale
Primary cells cultures from fetal bovine brain: A reliable in vitro model to study aromatase P450 (P450Aro) synthesis and regulation
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Analysis of P450Aro and α and β estrogen receptors’ mRNA expression in primary cells cultures from fetal bovine brain.
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Analysis of P450 aromatase (mRNA) in male and female bovine fetal hypothalamus at different development ages
No full textOntogenesis of brain aromatase P450 expression in the bovine hypothalamus.
No full textAromatase P450 (P450AROM), converting testosterone (T) into estradiol (E), plays an important role in sexual differentiation of neural structures in the developing mammalian brain. The aim of the present study was to characterize the qualitative and quantitative profile of P450AROM mRNA expression in the bovine hypothalamus (the region of the central nervous system in which the enzyme is mainly localized) using RT-PCR and quantitative real-time RT-PCR analysis, respectively. P450AROM expression was examined in the developing hypothalamus in a series of experimental groups investigated at 10 weeks interval one from the other. Our data indicate that in the bovine fetal hypothalamus P450AROM expression peaks at the second quarter of gestation. The presence of neural cells containing P450AROM in the bovine fetal hypothalamus was confirmed by immunohistochemistry, and localized in the medial preoptic area. We conclude that second quarter of the gestation is the developmental stage which represents a critical period for hypothalamic differentiation in bovine ontogenesis, an important difference with the rat and mouse, short gestation species in which P450AROM activity peaks around delivery
Expression of P450AROM in the fetal bovine hypothalamus
No full textProgram No. 659.16/DD1 2006 Neuroscience Meeting Planner. Atlanta, GA: Society for Neuroscience, 2006. Onlin
Primary Cultures of Astrocytes from Fetal Bovine Brain
No full textWe describe here a method to obtain primary cell cultures from the cerebral cortex and the hypothalamus of bovine fetuses. We report how tissue origin, developmental stages, and culture medium conditions influence cell differentiation and the prevalence of glial cells vs. neurons. We compare explants from early, middle, and late stages of development and two different fetal calf serum concentrations (1 and 10%) to identify the best conditions to obtain and grow viable astrocytes in culture. In addition, we describe how to cryopreserve and obtain viable cortical astrocytes from frozen fetal bovine brain samples
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