577 research outputs found

    The Embioptera from the Strait of Sicily Islands: first records from Pantelleria and Lampedusa and new data from Lampione (Sicily, Italy)

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    The occurrence of Embioptera in the Strait of Sicily islands was up to date known only from Lampione (the smallest of the Pelagie islands), where the only species reported was provisionally assigned to Embia ramburi Rimski-Korsakow, 1905. Based on material recently collected by the authors, the presence of Embioptera is here reported for the first time in the Islands of Pantelleria (Sicily, Trapani) and Lampedusa (Sicily, Agrigento). In the Island of Pantelleria the occurrence of the typical small silky tunnels produced by Embioptera has been verified in many sites, from sea level to Montagna Grande (836 m). In many of these sites, several juveniles and some adult or subadult specimens were collected and reared, obtaining an adult male belonging to Cleomia guareschii Stefani, 1953. Moreover, a single adult male of E. ramburi was collected in Lampedusa, the largest of the Pelagian Islands. Finally, the fauna of Embioptera from Lampione remains still poorly known, as it was possible to examine only two females recently collected in the island, and identified as Embia sp

    Serum anti‐mĂŒllerian hormone levels and risk of premature ovarian insufficiency in female childhood cancer survivors: Systematic review and network meta‐analysis

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    Background: Female childhood cancer survivors (CCS) might have impaired ovarian reserves, especially after alkylating agents or radiotherapy. The purpose of this systematic review and network meta‐analysis is to evaluate the role of serum anti‐MĂŒllerian hormone (AMH) for ovarian reserve screening and the risk of premature ovarian insufficiency (POI) according to the subtype of childhood cancer. (2) Methods: PRISMA‐NMA guidelines were followed. We carried out a network meta‐analysis based on a random effects model for mixed multiple treatment comparisons to rank childhood cancers effects on fertility by surface under the cumulative ranking curve (SUCRA). Studies were selected only if they had an age‐matched control group. Quality assessment was performed using Newcastle–Ottawa Scale. The co‐primary outcomes were mean AMH levels and the incidence of POI. (3) Results: A total of 8 studies (1303 participants) were included. Women treated for a neuroblastoma during infancy were more likely to be ranked first for impaired AMH levels (SUCRA = 65.4%), followed by mixed CCS (SUCRA = 29.6%). The greatest rates of POI were found in neuroblastoma survivors (SUCRA = 42.5%), followed by acute lymphoid leukemia (SUCRA = 26.3%) or any other neoplasia (SUCR A= 20.5%). (4) Conclusions: AMH represents a trustworthy approach for ovarian reserve screening. Direct and indirect comparisons found no differences in mean AMH levels and POI risk between subtypes of CCS and healthy controls. SUCRA analysis showed that female neuroblastoma survivors were more at risk for reduced serum AMH levels and increased risk of POI

    Surgical management of endocervical and decidual polyps during pregnancy: systematic review and meta-analysis

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    Purpose: To evaluate the impact of endocervical and decidual polypectomy on obstetrical outcomes of pregnant women. Methods: MEDLINE, Scopus, ClinicalTrials.gov, Scielo, EMBASE, Cochrane Library at the CENTRAL Register of Controlled Trials, and LILACS were searched from inception to April 2021. No language or geographical restrictions were applied. Inclusion criteria regarded observational studies concerning pregnant women with a cervical lesion who underwent cervical polypectomy. Co-primary outcomes were incidence of late pregnancy loss and preterm birth in women with endocervical or decidual polypectomy as well as polypectomy versus expectant management. Random effect meta-analyses to calculate risk ratio (RR) with 95% confidence interval (CI) were performed. Quality assessment of included papers was performed using Newcastle–Ottawa Scale criteria. Results: Three studies, with data provided for 3097 women, were included in quantitative analysis, with comparisons between endocervical and decidual polyps extracted from two studies and 156 patients. After a first trimester endocervical or decidual polypectomy, no significant differences were found for late pregnancy losses (RR 0.29 [95% CI 0.05, 1.80], I2 = 11%). Risk for preterm birth was significantly higher for decidual polyps’ removal (RR 6.13 [95% CI 2.57, 14.59], I2 = 0%). One paper compared cervical polypectomy vs expectant management, with increased incidence of late pregnancy loss (4/142 vs 5/2799; p < 0.001) and preterm birth (19/142 vs 115/2799; p < 0.001) in women subjected to polypectomy. Conclusions: Evidence regarding the removal of cervical polyps in pregnancy is extremely limited. However, the removal of either decidual or endocervical polyps seems associated with increased risk of pregnancy loss and preterm birth, with increased preterm birth risk following endocervical rather than decidual polypectomy

    Hyperthermic intraperitoneal chemotherapy (HIPEC) for ovarian cancer recurrence: systematic review and meta-analysis.

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    Background: Ovarian cancer is the first cause of death among gynecological malignancies with a high incidence of recurrence. Different treatment options are suitable to prolong the survival rate of these patients. Over the last years, one of the most intriguing methods, adopted in different oncologic centers worldwide, is the hyperthermic intraperitoneal chemotherapy (HIPEC). Methods: A meta-analysis was performed to value the role of HIPEC for ovarian cancer recurrence. Search strategy was conducted with a combination of the following keywords: "ovarian recurrence, ovarian cancer recurrence, peritoneal cancer recurrence, ovarian recurrence AND HIPEC, secondary cytoreduction HIPEC". Seven studies were selected for analysis. Results: In women with recurrent ovarian cancer (ROC), the use of HIPEC in addition to cytoreductive surgery and chemotherapy significantly improved 1-year overall survival (OS) when compared to protocols without HIPEC (OR 2.42; 95% CI, 1.06-5.56; P=0.04; I2=4%). The improvement in OS was maintained significant also after 2, 3 and 5 years respectively (OR 3.33; 95% CI, 1.81-6.10; P&lt;0.01; I2=0%), (OR 4.22; 95% CI, 2.07-8.60; P&lt;0.01; I2=52%), (OR 5.17; 95% CI, 1.40-19.09; P=0.01; I2=82%). Conclusions: HIPEC seems to have an effective role to prolong survival in patients affected by ROC

    Anti-angiogenic and anti-proliferative graphene oxide nanosheets for tumor cell therapy

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    Graphene oxide (GO) is a bidimensional novel material that exhibits high biocompatibility and angiogenic properties, mostly related to the intracellular formation of reactive oxygen species (ROS). In this work, we set up an experimental methodology for the fabrication of GO@peptide hybrids by the immobilization, via irreversible physical adsorption, of the Ac-(GHHPH)4-NH2 peptide sequence, known to mimic the anti-angiogenic domain of the histidine-proline-rich glycoprotein (HPRG). The anti-proliferative capability of the graphene-peptide hybrids were tested in vitro by viability assays on prostate cancer cells (PC-3 line), human neuroblastoma (SH-SY5Y), and human retinal endothelial cells (primary HREC). The anti-angiogenic response of the two cellular models of angiogenesis, namely endothelial and prostate cancer cells, was scrutinized by prostaglandin E2 (PGE2) release and wound scratch assays, to correlate the activation of inflammatory response upon the cell treatments with the GO@peptide nanocomposites to the cell migration processes. Results showed that the GO@peptide nanoassemblies not only effectively induced toxicity in the prostate cancer cells, but also strongly blocked the cell migration and inhibited the prostaglandin-mediated inflammatory process both in PC-3 and in HRECs. Moreover, the cytotoxic mechanism and the internalization efficiency of the theranostic nanoplatforms, investigated by mitochondrial ROS production analyses and confocal microscopy imaging, unraveled a dose-dependent manifold mechanism of action performed by the hybrid nanoassemblies against the PC-3 cells, with the detection of the GO-characteristic cell wrapping and mitochondrial perturbation. The obtained results pointed out to the very promising potential of the synthetized graphene-based hybrids for cancer therapy

    Signals of Bose Einstein condensation and Fermi quenching in the decay of hot nuclear systems

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    We report experimental signals of Bose-Einstein condensation in the decay of hot Ca projectile-like sources produced in mid-peripheral collisions at sub-Fermi energies. The experimental setup, constituted by the coupling of the INDRA 4π\pi detector array to the forward angle VAMOS magnetic spectrometer, allowed us to reconstruct the mass, charge and excitation energy of the decaying hot projectile-like sources. Furthermore, by means of quantum fluctuation analysis techniques, temperatures and mean volumes per particle "as seen by" bosons and fermions separately are correlated to the excitation energy of the reconstructed system. The obtained results are consistent with the production of dilute mixed (bosons/fermions) systems, where bosons experience a smaller volume as compared to the surrounding fermionic gas. Our findings recall similar phenomena observed in the study of boson condensates in atomic traps.Comment: Submitted to Phys. Rev. Lett. (december 2014

    Preliminary results of the risk perception of radon exposure

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    The Council Directive 2013/59/Euratom regulates radon exposures in dwellings for the ïŹrst time in the European Union. It establishes that Member States, to address long-term risks from radon exposures in dwellings, buildings with public access and workplaces for any source of radon ingress, shall establish a national action plan considering the issues set out in Annex XVIII. Member States shall increase public awareness about indoor radon risk, the importance of carrying out indoor radon concentration measurements and the availability of radon concentration reduction techniques. In this paper we present preliminary data, collected in the district of Naples (Italy), on the public’s knowledge regarding the risks associated with exposure to radon. The collected data, based on a speciïŹcally designed questionnaire, provide some points of reïŹ‚ection both for the optimization of the questionnaire itself, for future surveys, and for the information program for the population
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