The Deep Plumbing System of Ischia: a Physico-chemical Window on the Fluid-saturated and CO2-sustained Neapolitan Volcanism (Southern Italy)

Ischia, a volcanic island located 18 miles SW of Naples (Southern Italy), is a densely populated active caldera that last erupted in AD 1302. Melt inclusions in phenocrysts of the Vateliero and Cava Nocelle shoshonite-latite eruptive products (6th to 4th centuries BC) constrain the structure and nature of the Ischia deep magmatic feeding system. Their geochemical characteristics make Ischia a natural borehole for probing the physico-chemical conditions of magma generation in mantle contaminated by slab-derived fluids or melts, largely dominated by CO2. Volatile concentrations in olivine-hosted melt inclusions require gas-melt equilibria at between 3 and 18 km depth. In agreement with what has already been demonstrated at the other neighboring Neapolitan volcanoes (Procida, Campi Flegrei caldera and Somma-Vesuvius volcanic complex), a major crystallization depth at 8-10 km has been identified.The analyzed melt inclusions provide clear evidence for CO2-dominated gas fluxing and consequent dehydration of magma batches stagnating at crustal discontinuities. Gas fluxing is further supported by selective enrichment in K owing to fluid-transfer during magma differentiation.This takes place under oxidized conditions (Fe3+/EFe>=0·3) that can be fixed by an equimolar proportion of divalent and trivalent iron in the melt if post-entrapment crystallization of the host olivine is discarded. The melt inclusion data, together with data from the literature for other Neapolitan volcanoes, show that magmatism and volcanism in the Neapolitan area, despite differences in composition and eruption dynamics, are closely linked to supercritical CO2-rich fluids.These fluids are produced by devolatilization of subducting terrigenous-pelagic metasediments and infiltrate the overlying mantle wedge, generate magmas and control their ascent up to eruption. Geochemical characteristics of Ischia and the other Neapolitan volcanoes reveal that the extent of fluid or melt contamination of the pre-subduction asthenospheric mantle wedge was similar among these volcanoes. However, differences in the isotopic compositions of the erupted magmas (more enriched in radiogenic Sr at Ischia, Campi Flegrei and Somma-Vesuvius with respect to Procida) and the amount of H2O in the plumbing system of these volcanoes (almost double at Ischia, Campi Flegrei and Somma-Vesuvius than at Procida) reflect the different flow-rates of deep slab-derived fluids or melts through the mantle wedge, which, in turn, control the amount of generated magma.The high bulk permeability of the lithosphere below Ischia, Campi Flegrei and Somma-Vesuvius, determined by the occurrence of intersecting NW-SE and NE-SW regional fault systems, favours fluid ascent and accumulation at crustal levels, with consequent larger magma production and storage than at Procida, located along the NE-SW system

What every psychiatrist should know about PANDAS: a review

The term Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus infections (PANDAS) was coined by Swedo et al. in 1998 to describe a subset of childhood obsessive-compulsive disorders (OCD) and tic disorders triggered by group-A beta-hemolytic Streptococcus pyogenes infection. Like adult OCD, PANDAS is associated with basal ganglia dysfunction. Other putative pathogenetic mechanisms of PANDAS include molecular mimicry and autoimmune-mediated altered neuronal signaling, involving calcium-calmodulin dependent protein (CaM) kinase II activity. Nonetheless the contrasting results from numerous studies provide no consensus on whether PANDAS should be considered as a specific nosological entity or simply a useful research framework. Herein we discuss available data that could provide insight into pathophysiology of adult OCD, or might explain cases of treatment-resistance. We also review the latest research findings on diagnostic and treatment

Confini domestici. Ruoli e immagini femminili nella pittura della controriforma

Looking out of the window or out of the door, peering beyond the property line, are considered blamed behaviours for the woman, as results in the domestic economy treaties and in the manual for the confession published between XV and XVI century. The symbiotic link between the woman and the door, background and semantic frame of the female condition, has been confirmed during the time by the paintings. In particular, the stories of Mary of Nazareth are able to define the scanning of the spaces and of the times of the Christian woman. As the illustrations of the XVI century obstetrician treaties show, the depiction of the “Nativity of Mary” is vehicle for the representation of the female life in the domestic settings in a significant moment as that concerning the birth of a baby. The pictorial and sculptural examples shown in this work, mark a double vision of the woman in the modern age in her relationship with her boundary. Doors and windows represent positive elements when are used to contain woman freedom; on the contrary, they are considered as negative ones when appear as woman means to fuel her curiosity

Earthquakes in the stratigraphic record: teaching resources

Los terremotos, a partir de una cierta magnitud, pueden dejar huella en el registro estratigráfico. Este artículo se centra en las estructuras sedimentarias de deformación producidas por licuefacción, que reciben el nombre de sismitas. Se ofrecen algunas ideas y recursos para que el alumnado aplique varios principios estratigráficos básicos en la interpretación de estos paleoterremotos. Además, se incluyen algunos recursos de internet y algunos modelos análogos sencillos. El análisis y estudio de estas estructuras ayuda al alumnado a comprender que los sedimentos no son únicamente el resultado del ambiente sedimentario en el que se depositaron, sino que también son capaces de registrar eventos externos a la cuenca como es el caso de los terremotos. La utilización del registro estratigráfico de los terremotos como herramienta didáctica tiene un gran potencial por la infinidad de recursos en internet, con grabaciones cada vez más frecuentes y de mayor calidad de los efectos de los terremotos más recientes, que permite aplicar al alumnado, de forma sencilla, el principio del actualismo.Earthquakes above a certain magnitude can leave traces in the stratigraphic record by deforming sediments. This paper focuses on soft-sediment deformation structures induced by liquefaction, known as seismites. We offer ideas and resources, so that students can apply basic stratigraphic principles to the interpretation of paleoearthquakes. We also include Internet resources and simple analogue models. The analysis and study of these sedimentary structures will help students understand that sedimentary deposits are not only influenced by the environment in which they were deposited, but also by external processes such as earthquakes. The stratigraphic record of earthquakes is a powerful didactic tool due to the large amount of images and videos of the effects of recent earthquakes, which readily enable students to apply the principle of actualism.Este trabajo ha sido financiado por el proyecto del Ministerio de Ciencia e Innovación del Gobierno de España CGL2011-30153-C02-02

DYSPHORIA DIMENSIONS: A PRELIMINARY INPATIENTS STUDY TO DIFFRENTIATE BORDERLINE PERSONALITY AND BIPOLAR DISORDER SPECTRUM

Background: Differentiating Borderline Personality Disorder (BPD) from Bipolar Disorder (BD) represents a very difficult challenge for clinicians. Dysphoria could be a possible key to differentiate these disorders. We currently define dysphoria as a complex and disorganized emotional state with proteiform phenomenology, characterized by a multitude of symptoms. Among them irritability, discontent, interpersonal resentment and surrender prevail. These dimensions can be detected using the Neapen Dysphoria Scale - Italian version (NDS-I). Dysphoria role in BPD has been highlighted by the recent theorization of the Interpersonal Dysphoria Model, according to which dysphoria could represent the “psychopathological organizer” of the BPD. On the other side, dysphoria role in BD has not yet been established. This is simply considered as an aspect, and not fundamental, of the symptomatology characterizing BD, especially in mixed states patients. The phenomenological analysis of the dimensional spectrum of dysphoria within BPD and DB could provide a valuable aid in the differential diagnosis between BPD and BD. Aims: The aim of this paper is to verify if the dimensional spectrum of dysphoria differs between Borderline Personality Disorder (BPD) and Bipolar Disorder Spectrum (BD) through an observational comparative study Subjects and methods: In this study, 65 adult patients, males and females between the ages of 18 and 65, were enrolled from the Psychiatric Service of the Santa Maria della Misericordia Hospital in Perugia (PG), Italy, from January 1st 2018 to April 30th 2019. We have formed 2 groups. A BPD group composed of 33 patients (19 female patients, representing approximately 57.6 % of the sample) and a BD group composed of 32 patients (18 Female patients, representing approximately 56.2% of the sample). Patient’s comorbid with BD and BPD have been excluded from the study. After a preliminary assessment to exclude organic and psychiatric comorbidity, and after at least 72 hours from hospitalization, we administered them the Neapen Dysphoria Scale - Italian Version (NDS-I), a specific dimensional test for dysphoria. Starting from the dataset, with the aid of the statistical program SPSS 20, we have carried out a comparison between disorders groups selected and their NDS-I total score and subscales (irritability, discontent, interpersonal resentment, surrender); For this we have used the Mann-Whitney U test, a nonparametric test with 2 independent samples, by setting a significance level p<0.05. Conclusions: This study allowed us to explore and analyze dysphoria dimensions expressions in BPD and BD. Despite the small sample analyzed, the results show a significant different dimensional spectrum expression of the dysphoria between the two disorders. In particular, Irritability and Interpersonal Resentment dimensions show greater interest in BPD than BD spectrum. Further studies with a larger and stratified sample are needed to confirm these results

DYSPHORIA AS A PSYCHIATRIC SYNDROME: A PRELIMINARY STUDY FOR A NEW TRANSNOSOGRAPHIC DIMENSIONAL APPROACH

Background: We currently define dysphoria as a complex and disorganized emotional state with proteiform phenomenology, characterized by a multitude of symptoms. Among them prevail irritability, discontent, interpersonal resentment and surrender. Dysphoria, in line with the most recent Interpersonal Dysphoria Model, could represent a “psychopathological organizer” of the Borderline Personality Disorder. We would like to extend this theoretical concept to other psychiatric disorders in order to consider dysphoria as a possible psychopathological nucleus, a syndrome on its own. This syndromic vision may open up the possibility of new paths both in the differential diagnosis and in the therapeutic approach to the various disorders. Aims: The goal of this paper is to understand if the dimensional spectrum that composes dysphoria differs from the different psychiatric disorders. Specifically, we would like to assess if the phenomenological expression of dysphoria differs in patients with Borderline Personality Disorder (BPD), Mixed State Bipolar Disorder (BDM) and Major Depressive Disorder (MDD) through an observational comparative study. Subjects and methods: In this study, 30 adult patients, males and females between the ages of 18 and 65, were enrolled from the Psychiatric Service of the Santa Maria della Misericordia Hospital in Perugia (PG), Italy, from January 1st to June 30th, 2018. The aim was to form 3 groups each one composed of 10 individuals affected respectively with Borderline Personality Disorder (BPD), with Bipolar Disorder, Mixed State (BPM) and Major Depression Disorder (MDD). After a preliminary assessment to exclude organic and psychiatric comorbidity, we administered them the Neapen Dysphoria Scale – Italian Version (NDS-I), a specific dimensional test for dysphoria. Starting from the dataset, with the aid of the statistical program SPSS 20, we have obtained graphs showing the comparison between disorders groups selected and NDS-I total score and subscales (irritability, discontent, interpersonal resentment, surrender). Finally, a comparison was made, taking two groups at a time, between the means of single groups for total scores and for single subscales considered into the NDS-I test. We made it using the Mann-Whitney U test, a nonparametric test with 2 independent samples, by setting a significance level =0.05. Conclusions: This study, through a transnosographic-dimensional approach, allowed us to explore dysphoria and its expressions in different psychopathological groups, despite analyzing a small sample. Differences between means of values obtained through NDS-I subscales were statistically significant in patients with BPD, BDM and MDD (p<0.05). Among the latter, the group of BPD patients has greater pervasiveness and severity of dysphoria symptoms