Search results for "CIDI"
showing 10 items of 778 documents
Adult Neurogenesis in Reptiles
2011
Adult neurogenesis in reptiles is a well-documented phenomenon and exists in many telencephalic areas. The newly generated neurons originate along the walls of the lateral ventricles, mainly in the sulci. The putative neural progenitors are radial glial cells. These glial cells give rise to neuroblasts that migrate to their final destination. In general, the new neurons are born in the portion of the ventricular zone (VZ) adjacent to the telencephalic area where they will be recruited and migrate radially through the brain parenchyma along the processes of radial glial cells to their final destination, although migration to the olfactory bulbs (OB) is different. Specifically, it seems that …
Migrating neuroblasts of the rostral migratory stream are putative targets for the action of nitric oxide
2007
It has been demonstrated that the gaseous messenger nitric oxide influences cell proliferation and cell migration, and therefore affects adult neurogenesis in mammals. Here, we investigated the putative targets for this action in the rostral migratory stream of the rat. We used immunocytochemical detection of the beta1 subunit of the enzyme soluble guanylyl cyclase, which can be activated by nitric oxide. Our results under light and electron microscopy demonstrated that the migrating neuroblasts (type A cells) were beta1-immunopositive. The astrocytes (type B cells), immature precursors (type C cells) and ependymal cells (type E cells) were beta1-immunonegative. The neurochemical characteri…
How does climate change affect a fishable resource? The case of the royal sea cucumber (Parastichopus regalis) in the central Mediterranean Sea
2022
Holothurians or sea cucumbers are key organisms in marine ecosystems that, by ingesting large quantities of sediments, provide important ecosystem services. Among them, Parastichopus regalis (Cuvier, 1817) is one of the living sea cucumbers in the Mediterranean actively fished for human consumption mainly in Spain, where it is considered a gastronomic delicacy. In the Strait of Sicily (central Mediterranean Sea), this species is not exploited for commercial use even if it is used as bait by longline fishery. P. regalis is frequently caught by bottom trawling and discarded at sea by fishers after catch, and because of its capacity to resist air exposition (at least in cold months), it is rea…
Glycine receptors influence radial migration in the embryonic mouse neocortex.
2011
To investigate whether glycine receptors influence radial migration in the neocortex, we analyzed the effect of glycine and the glycinergic antagonist strychnine, on the distribution of 5-bromo-2'deoxyuridine-labeled neurons in organotypic slice cultures from embryonic mice cortices. Application of glycine impeded radial migration only in the presence of the glycine-transport blockers, ALX-5407 and ALX-1393. This effect was blocked by the specific glycine receptor antagonist strychnine, whereas application of strychnine in the absence of glycine was without effect. We conclude from these observations that an activation of glycine receptors can impede radial migration, but that the glycinerg…
Prefazione a Messina, R., "La strage negata"
2016
"Il 19 ottobre del 1944 si consumò a Palermo uno degli eventi più drammatici dell'immediato dopoguerra: truppe dell'esercito italiano aprirono il fuoco su centinaia di cittadini che, al grido di 'pane, pasta e lavoro!', sfilavano per il centro della città in una pacifica protesta contro il carovita. 24 tra i manifestanti, e tra di loro bambini e ragazzi, rimasero uccisi; 156 furono feriti. [...] Ripercorrendo tutte le tappe dell'iter giudiziario dell'eccidio del 19 ottobre, e concentrandosi in particolare sull'analisi del processo svoltosi presso il tribunale militare di Taranto nel febbraio del 1947, Rino Messina ci dimostra come dietro il paravento della "tutela dell'ordine pubblico" si n…
Guerre di mafia
2004
La convivenza tra gruppi e fazioni di una medesima organizzazione di tipo mafioso – tra gruppi, cioè, che fanno del controllo del territorio un elemento fondante la propria esistenza – è assicurata da un sistema di gerarchie strutturate, istituite alla stregua di veri e propri organismi di contenimento della violenza e di contemperamento degli interessi. Gli equilibri creati da tali sistemi di regolazione dei conflitti restano, tuttavia, sempre molto instabili, poiché condizionati dalle mutevoli relazioni di reciprocità e condivisione che intercorrono tra i gruppi criminali che operano su una medesima area geografica: condiviso deve essere il riconoscimento di legittimità nei confronti dell…
Generally Antisocial Batterers with High Neuropsychological Deficits Present Lower Treatment Compliance and Higher Recidivism
2021
Objective: No studies have considered whether neuropsychological performance moderates the relationship between Holtzworth-Munroe and Stuart's intimate partner violence against women (IPVAW) offender typologies and treatment compliance and recidivism. Therefore, we first aimed to assess whether the typologies show differences in specific neuropsychological variables such as cognitive flexibility and emotion decoding processes. Second, we also assessed whether there are differences in treatment compliance and recidivism between the IPVAW offender typologies, based on their neuropsychological performance. Method: We administered a set of neuropsychological tests (e.g., Wisconsin card sorting …
Ocean Acidification studies in the Baia di Levante (Vulcano island, Italy). Advantages and disadvantages of the “in situ” approach.
2014
Years of scientific research have shown that acidification of oceans (OA) is an undisputed fact. Why is it so important to increase knowledge about OA? Because many animals and plants in the ocean have calcium carbonate skeletons or shells, and a decreasing in pH can affect their population health state and the marine-ecosystem structure. Another point of view about OA which must to be considered is that it may alter the behavior of sediment-bound metals, modifying their bioavailability and thus toxicity. The toxic free-ion concentration of metals such as copper may increase by as much as 115% in coastal waters in the next 100 years due to reduced pH. Since increasing atmospheric CO2 over t…
Perdere il senno e darsi la morte. Due casi singolari di punizione divina nelle Storie di Erodoto (V 85; VI, 75)
2016
Scopo di questo paper è l’analisi dei temi della follia e del suicidio nella struttura narrativa di Erodoto. I due episodi esaminati sono: a) il racconto della pazzia che colpì gli Ateniesi, che avevano tentato invano di sottrarre agli Egineti le sacre statue di Damia e Auxesia; b) la storia dei disaccordi tra i due re spartani Demarato e Cleomene e il loro tragico esito. Questi due episodi sono profondamente interconnessi: attraverso i rimandi interni, suggeriti dalle scelte linguistiche dello storico, noi vogliamo infine riflettere sul modello causale erodoteo. The aim of this paper is the analysis of the themes of madness and suicide in the narrative structure of Herodotus. Two episodes …
Astrocytes give rise to new neurons in the adult mammalian hippocampus
2001
Neurogenesis in the dentate gyrus of the hippocampus persists throughout life in many vertebrates, including humans. The progenitors of these new neurons reside in the subgranular layer (SGL) of the dentate gyrus. Although stem cells that can self-renew and generate new neurons and glia have been cultured from the adult mammalian hippocampus, the in vivo primary precursors for the formation of new neurons have not been identified. Here we show that SGL cells, which express glial fibrillary acidic protein and have the characteristics of astrocytes, divide and generate new neurons under normal conditions or after the chemical removal of actively dividing cells. We also describe a population o…