Search results for "FISIOLOGIA"

Botanica: fondamenti di biologia delle piante

2014

Questa nuova edizione del “Mauseth”, la terza italiana, propone un testo riunificato in un volume unico sulla base di precise esigenze di molti corsi. Non si tratta semplicemente della traduzione della quarta Edizione americana ma di una revisione critica più aderente ai corsi delle Università italiane. Si è tentato di rendere più conciso il testo, pur aggiornandolo con nuove conoscenze, ma mantenendo e talora ampliando l’iconografia originale. Inoltre, taluni capitoli sono stati arricchiti con inserti originali e schemi nuovi che i Colleghi estensori di taluni argomenti, specialmente della parte di Botanica generale, ci hanno aiutato ad ideare. Anche la parte di Botanica sistematica ed eco…

TRPV1 channels as putative targets in the cannabinoid-mediated synaptic activity of hippocampal neurons

Endocannabinoids (eCBs) play a critical part in pathophysiological conditions rooted on neuronal excitability such as epilepsy. eCBs seem to be involved in neuroprotection, putatively acting on the cannabinoid receptor type 1 (CB1r), but also on Transient Receptor Potential Vanilloid type 1 channels (TRPV1). Indeed, CB1r and TRPV1 are involved in the transduction of stimuli at synaptic level, though exact molecular mechanisms are far from being unveiled. Thus, we aimed to investigate the role of CB1r/TRPV1 interplay in the rat hippocampal neurotransmission by whole-cell patch clamp technique to evaluate excitatory bioelectric activity in the CA1. We pharmacologically manipulated this pathwa…

ROLE OF NITRIC OXIDE/cGMP PATHWAY IN CANNABINOID MODULATION OF PAROXYSMAL PHENOMENA

Inhibitory influence of chromogranin A N-terminal fragment (vasostatin-1) on the spontaneous contractions of rat proximal colon

2005

Very little is known about the role played by CGA and its fragments in the gastrointestinal physiology. We have studied the role of CGA N-terminal fragments in the regulation of intestinal smooth muscle contractility by measuring the influence of recombinant CGA 1-78 (VS-1) and synthetic CGA 7-57 peptides on the spontaneous mechanical activity of rat proximal colon in vitro. The mechanical activity was recorded as changes in the intraluminal pressure. VS-1 (0.1-30 nM) and CGA 7-57 (10-300 nM) produced concentration-dependent inhibitory effects, characterized by a progressive decrease in the mean amplitude of circular muscle spontaneous contractions, without affecting the resting tone. The r…

INTERSPECIFIC VARIATION IN TOTAL PHENOLIC CONTENT IN TEMPERATE BROWN ALGAE

2015

The aim of this study was to focus on interspecific variation of total phenolic contents (TPC) in temperate brown algae also considering their relationship with environmental conditions. In particular, we compared the TPC of four species characterized by different thallus morphology, growth cycle and bathymetric level: Cystoseira amentacea (C. Agardh) Bory, Cystoseira compressa (Esper) Gerloff & Nizamuddin, Dictyopteris polypodioides (A.P. De Candolle) J.V. Lamouroux and Padina pavonica (Linnaeus) Thivy, collected in summer 2011 from the north-western coast of Sicily.

Time course of changes in airway cells during early training in healthy subjects

2008

Detection of Fibroblast Growth Factor Receptor 1 (FGFR1) Transactivation by Muscarinic Acetylcholine Receptors (mAChRs) in Primary Neuronal Hippocamp…

2018

In addition to their canonical intracellular signals involved in the regulation of neuronal plasticity, G-protein coupled receptors can also rapidly transactivate tyrosine kinase receptors and their downstream intracellular signaling in absence of specific ligands. Here we describe our protocol for dissociating and maintaining hippocampal primary neurons in high- and low-density culture, followed by a description of methods employed to evaluate neurite outgrowth and protein phosphorylation associated with fibroblast growth factor receptor 1 transactivation by muscarinic acetylcholine receptors. Our goal was to provide the reader with detailed protocols of the abovementioned techniques and t…

Triune brain's mechanisms of thought and behavior, death awareness, and origin of religion in early humans.

2008

According to ethological point of view, the most important religious displays consist in the gathering of several human groups who perform repeated and prolonged demonstrations of submission toward dominant individuals. These dominant individuals take different forms in each culture but they share some characteristics including an immense power. For what concerns the genesis, in human mind, of the ideas of such immense power beings, some scholars, as Freud (Totem und tabu, 1913), felt that such beings could be the projection result of the figure of the “primordial horde’s father” in a super- human world. In The Naked Ape (1967), Morris has proposed a sort of biological updating of the Freud…

Evolutionary and neurobiological bases of theism

2009

According to evolutionary psychology, all human behaviours are a product of internal mechanisms in conjunction with inputs that cause activation of those mechanisms: no mechanism, no behaviour; no input, no behaviour. From an ethological point of view, the most important religious behaviours consist in the gathering of humans who perform demonstrations of submission toward supernatural individuals endowed with an immense power. About the genesis of the ideas of such beings, Freud felt that they could be the projection result of the “primordial horde’s father” in a super-human world. Subsequently Morris has proposed that divine beings risult from the projection of the figure of the dominant …

Fisiologia Vegetal. Experiments de laboratori

2010

Manual de pràctiques de laboratori de fisiologia vegetal.