A GEOSITE TO BE SAVED: THE TYRRHENIAN FOSSIL DEPOSIT ON THE ISLAND OF USTICA

During the 1960s, fossil beds characterized by a tropical-sea malacofauna were discovered by G. Ruggieri and G. Buccheri in the Island of Ustica, on the southern slope of Falconiera hill, 32 m asl. Thanks to the presence of Strombus bubonius and other Senegalese guests, the authors estimated that the molluscan fauna had lived around 125,000 years ago, during the Tyrrhenian stage. Recently on the initiative of the “Centro Studi e Documentazione Isola di Ustica”, a research has been initiated to verify the persistence of sand-layers mixed up with Tyrrhenian fossils, even though, in the last 50 years, that area has undergone great changes, because of earthworks which have sealed the deposit. The new research led to the discovery of a fossil assemblage formed by 22 taxa (16 species of gastropods and 6 of bivalves), characterized by the presence of some Senegalese guests and other accompanying species that can be associated with the Eutyrrhenian subunit (MIS 5.5). This is the main subject of this note, along with the suggestion to preserve what remains of the Ustica Tyrrhenian deposit

An Atypical Case of Taravana Syndrome in a Breath-Hold Underwater Fishing Champion: A Case Report

Dysbaric accidents are usually referred to compressed air-supplied diving. Nonetheless, some cases of decompression illness are known to have occurred among breath-hold (BH) divers also, and they are reported in the medical literature. A male BH diver ((à years old), underwater *shing champion, presented neurological disorders as dizziness, sensory numbness, blurred vision, and le+ frontoparietal pain a+er many dives to a $à–$( meters sea water depth with short surface intervals. Symptoms spontaneously regressed and the patient came back home. )e following morning, pain and neurological impairment occurred again and the diver went by himself to the hospital where he had a generalized tonic-clonic seizure and lost consciousness. A magnetic resonance imaging of the brain disclofsed a cortical T -weighted hypointense area in the temporal region corresponding to infarction with partial hemorrhage. An early hyperbaric oxygen therapy led to prompt resolution of neurological *ndings. All clinical and imaging characteristics were referable to the Taravana diving syndrome, induced by repetitive prolonged deep BH dives. )e reappearance of neurological signs a+er an uncommon ! -hour symptom-free interval may suggest an atypical case of Taravana syndrome

Clues of wildfire-induced geotechnical changes in volcanic soils affected by post-fire slope instabilities

Wildfires can significantly affect mountain hillslopes through the combustion of trees and shrubs and changes in soil properties. The type and magnitude of the associated post-fire effects depend on several factors, including fire severity and soil physical-mechanical-hydraulic features that, coupled with climate and topographic conditions, may cause increased runoff, erosion, and slope instability as consequence of intense rainfall. The post-fire response of slopes is highly site-specific. Therefore, in situ surveys and laboratory tests are needed to quantify changes in key soil parameters. The present study documents the post-fire physical and hydromechanical properties of pyroclastic topsoil collected from three test sites that suffered wildfires and rainfall-induced post-fire events in 2019 and 2020 in the Sarno Mountains (Campania Region, southern Italy). The tested pyroclastic soils in burned conditions show (i) no significant changes in grain size distribution, soil organic matter, and specific gravity; (ii) a deterioration in shear strength in terms of decreased soil cohesion caused by the fire-induced weakening of root systems; and (iii) a decrease in hydraulic conductivity. Accordingly, it can be argued that the documented post-fire erosion responses were mainly caused by the reduced cohesion and hydraulic conductivity of the burned topsoil layer, as well as by the loss of vegetation cover and the deposition of fire residues. Although deserving further deepening, this study can represent the necessary background for understanding the initiation mechanism of post-fire erosion processes in the analyzed area and on several natural slopes under similar conditions

A perioperative uncontrollable bleeding in an elderly patient with acquired hemophilia A: a case report

Acquired hemophilia A should be taken into account in the differential diagnosis of perioperative bleeding in patients without any apparent reason for activated partial thromboplastin time prolongation

Results and applications of SiPM photodetectors from FBK-irst by the DASIPM Collaboration

Silicon Photomultipliers (SiPMs) and SiPM matrices optimized for the detection of blue light have been developed at FBK-irst. The first devices produced are composed of 625 microcells with 40 μm × 40 μm size, in a 1mm × 1mm active area. The devices have a breakdown voltage around 30 V, and a gain about 106. The DASIPM Collaboration is evaluating their performance and possible applications in high-energy physics, space physics and medical imaging. Dedicated front-end electronics are also being developed

Y chromosome microdeletions in infertile men with idiopathic oligo- or azoospermia

About 30–40% of male infertility is due to unknown reasons. Genetic contributions to the disruption of spermatogenesis are suggested and amongst the genetic factors studied, Y chromosome microdeletions represent the most common one. Screening for microdeletions in AZFa, b and c region of Y chromosome showed a big variation among different studies. The purpose of this study was to investigate the prevalence of such deletions in Saudi men. A total of 257 patients with idiopathic oligo- or azoospermia were screened for Y chromosome microdeletions by 19 markers in AZF region. Ten (3.9%) patients had chromosomal rearrangements, six of them showed sex chromosome abnormalities and four patients had apparently balanced autosomal rearrengements. Eight of the remaining 247 patients (3.2%) with a normal karyotype and no known causes of impaired spermatogenesis had Y chromosome microdeletions. Among these, six patients had deletions in AZFc region, one case had a deletion in AZFb and another had both AZFa and AZFc deletions. In conclusion, our study shows that Y chromosome microdeletions are low in our population. We also report for the first time a case with unique point deletions of AZFa and AZFc regions. The lower frequency of deletions in our study suggest that other genetic, epigenetic, nutritional and local factors may be responsible for idiopathic oligo- or azoospermia in the Saudi population

Mechanism of Human Papillomavirus Binding to Human Spermatozoa and Fertilizing Ability of Infected Spermatozoa

Human papillomaviruses (HPVs) are agents of the most common sexually transmitted diseases in females and males. Precise data about the presence, mechanism of infection and clinical significance of HPV in the male reproductive tract and especially in sperm are not available. Here we show that HPV can infect human sperm, it localizes at the equatorial region of sperm head through interaction between the HPV capsid protein L1 and syndecan-1. Sperm transfected with HPV E6/E7 genes and sperm exposed to HPV L1 capsid protein are capable to penetrate the oocyte and transfer the virus into oocytes, in which viral genes are then activated and transcribed. These data show that sperm might function as vectors for HPV transfer into the oocytes, and open new perspectives on the role of HPV infection in males and are particularly intriguing in relation to assisted reproduction techniques

Is Adnexectomy Mandatory at the Time of Hysterectomy for Uterine Sarcomas? A Systematic Review and Meta-Analysis.

Background and Objectives: Uterine sarcomas represents only 3% of all the female genital tract ones. The tumoral stage is the most significant prognostic factor. The role of the bilateral salpingo-oophorectomy (BSO) in the surgical management of FIGO stage IA and IB appears still controversial. This review aims to investigate the impact of bilateral adnexectomy in the treatment of uterine sarcoma. Methods: Following the recommendations in the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement, we systematically searched the PubMed, Scopus, Cochrane, Medline, and Medscape databases in February 2022. We applied no language or geographical restrictions, but we considered only English studies. We included the studies containing data about Recurrence Rate (RR), Disease-free Survival (DFS), and Overall Survival (OS). We used comparative studies for meta-analysis. Results: Seventeen studies fulfilled the inclusion criteria; 2 retrospective observational studies, and 15 retrospective comparative studies, And 14 out of the 15 comparative studies were enrolled in meta-analysis. A total of 3743 patients were analyzed concerning the use of adnexectomy with hysterectomy in patients with uterine sarcoma and compared with those who did not. Meta-analysis highlighted a non-significant worsening of the OS in the BSO group compared to the OP group and showed that adnexectomy does not improve the DFS (BSO OR 1.23 (95% CI 0.81–1.85) p = 0.34; I(2) = 24% p = 0.22). Conclusions: Most studies selected for our review showed that adnexectomy does not significantly affect the RR, OS, and PFS in treating FIGO stage I uterine sarcomas. Therefore, even if there is a unanimous consensus about bilateral adnexectomy in menopausal patients, preservation of ovarian tissue may be considered in premenopausal women. Nonetheless, there are not enough cases in the literature to recommend this procedure

ACTA OTORHINOLARYNGOLOGICA ITALICA

Le asimmetrie maxillo-mandibolari riconoscono numerose eziologie: congenita, traumatica, iatrogena e post resezione oncologica. I pazienti affetti da malformazioni congenite vengono generalmente sottoposti a chirurgia ortognatica con o senza procedure aggiuntive (genioplastica, impianti alloplastici) con risultati soddisfacenti. Tuttavia, nonostante il raggiungimento della simmetria scheletrica può esitare una asimmetria residua più o meno evidente. Lo studio presentato è stato effettuato su 45 pazienti (29 femmine e 16 maschi), trattati chirurgicamente tra Dicembre 2012 e Giugno 2014. Tutti i pazienti erano affetti da asimmetria maxillo-mandibolare e sono stati sottoposti a chirurgia ortognatica per la correzione ossea della deformità. Le alterazioni residue sono state trattate con lipofilling. In tutti i casi si è osservato un buon attecchimento del grasso a livello del sito ricevente. Lanalisi retrospettiva della documentazione fotografica ha dimostrato un progressivo decremento dei volumi raggiunti in seguito al trattamento con lipofilling fino a sei mesi dalla procedura, dopodiché i volumi sono rimasti invariati. Non sono state riportate complicanze significative sia a livello del sito donatore sia del ricevente. Un lieve edema ecchimotico è stato osservato frequentemente nella prima settimana post-operatoria, non sono stati riportati casi di ematoma, infezioni, danni nervosi o vascolari. 24 pazienti hanno avuto necessità di ulteriori applicazioni, una seconda applicazione si è resa necessaria in 22 pazienti ed una terza in 2 pazienti. (totale di 69 procedure). Sulla base dei risultati di questo studio la metodica del lipofilling si è dimostrata semplice, efficace e facilmente riproducibile, mostrando un alto indice di soddisfazione da parte dei pazienti e una scarsa incidenza di svantaggi e complicanze. Abbiamo inoltre dimostrato come il successo del riempimento con grasso autologo sia dipendente dalla subunità del viso che viene trattata. Le regioni malare e della guancia hanno mostrato i migliori risultati mentre le subunità corrispondenti al labbro inferiore e superiore hanno mostrato uno scarso attecchimento del grasso innestato, con una conseguente maggiore perdita di volume. In conclusione si può dire che le procedure composite, che prevedono lutilizzo congiunto della correzione chirurgica delle basi scheletriche e un successivo ritocco per mezzo di innesto di grasso autologo, costituiscono una opzione addizionale e personalizzabile per i pazienti affetti da malformazioni maxillo-mandibolari