Universita Cattolica Del Sacro Cuore

Rome, Italy

Universita Cattolica Del Sacro Cuore

Rome, Italy
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Giammarco S.,Universita Cattolica Del Sacro Cuore | Chiusolo P.,Universita Cattolica Del Sacro Cuore | Piccirillo N.,Universita Cattolica Del Sacro Cuore | Di Giovanni A.,Universita Cattolica Del Sacro Cuore | And 4 more authors.
Expert Review of Hematology | Year: 2017

Introduction: Hyperleukocytosis is defined as a white blood cell count greater than 100,000/mL in patients affected by acute leukemia and often it is associated with increased morbidity and mortality, that can be up to 40% if unrecognized. Areas covered: Risk factors include younger age, myelomonocytic or monocytic/monoblastic morphology, microgranular variant of acute promyelocitic leukemia and T-cell ALL, and some cytogenetic abnormalities. Poor prognosis due to high early death rate secondary to leukostasis. The mechanisms at the origin of leukostasis are still poorly understood. The management of acute hyperleukocytosis and leukostasis involves supportive measures and reducing the number of circulating leukemic blast cells, with careful monitoring of fluid balance, control of uric acid production and control of urine pH to prevent tumour lysis syndrome. Expert commentary: Several studies have been performed to ameliorate the outcome of this setting of patients. The high number of leukocytes may cause 3 main complications: disseminated intravascular coagulation (DIC), tumor lysis syndrome (TLS), and leukostasis. Although hyperleukocytosis and tumour lysis syndrome are still a challenge for clinicians, a better prognosis for these conditions is emerging in the last years. © 2016 Informa UK Limited, trading as Taylor & Francis Group.

Merolli A.,Rutgers University | Merolli A.,Universita Cattolica Del Sacro Cuore | Mao Y.,Rutgers University | Kohn J.,Rutgers University
Journal of Materials Science: Materials in Medicine | Year: 2017

Abstract: Understanding of myelination/remyelination process is essential to guide tissue engineering for nerve regeneration. In vitro models currently used are limited to cell population studies and cannot easily identify individual cell contribution to the process. We established a novel model to study the contribution of human Schwann cells to the myelination process. The model avoids the presence of neurons in culture; Schwann cells respond solely to the biophysical properties of an artificial axon. The model uses a single carbon fiber suspended in culture media far from the floor of the well. The fiber provides an elongated structure of defined diameter with 360-degree of surface available for human Schwann cells to wrap around. This model enabled us to spatially and temporally track the myelination by individual Schwann cells along the fiber. We observed cell attachment, elongation and wrapping over a period of 9 days. Cells remained alive and expressed Myelin Basic Protein and Myelin Associated Glycoprotein as expected. Natural and artificial molecules, and external physical factors (e.g., p atterned electrical impulses), may be tested with this model as possible regulators of myelination. Graphical Abstract: [InlineMediaObject not available: see fulltext.] © 2017, Springer Science+Business Media New York.

Dosi G.,Sant'Anna School of Advanced Studies | Pereira M.C.,Sant'Anna School of Advanced Studies | Pereira M.C.,University of Campinas | Virgillito M.E.,Sant'Anna School of Advanced Studies | Virgillito M.E.,Universita Cattolica Del Sacro Cuore
Journal of Economic Interaction and Coordination | Year: 2017

Firms grow and decline by relatively lumpy jumps which cannot be accounted by the cumulation of small, “atom-less”, independent shocks. Rather “big” episodes of expansion and contraction are relatively frequent. More technically, this is revealed by the fat-tailed distributions of growth rates. This applies across different levels of sectoral disaggregation, across countries, over different historical periods for which there are available data. What determines such property? In Dosi et al. (The footprint of evolutionary processes of learning and selection upon the statistical properties of industrial dynamics. Industrial and corporate change. Oxford University Press, Oxford, 2016) we implemented a simple multi-firm evolutionary simulation model, built upon the coupling of a replicator dynamic and an idiosyncratic learning process, which turns out to be able to robustly reproduce such a stylized fact. Here, we investigate, by means of a Kriging meta-model, how robust such “ubiquitousness” feature is with regard to a global exploration of the parameters space. The exercise confirms the high level of generality of the results in a statistically robust global sensitivity analysis framework. © 2017 Springer-Verlag Berlin Heidelberg

Bacigalupo A.,Universita Cattolica Del Sacro Cuore | Giammarco S.,Universita Cattolica Del Sacro Cuore | Sica S.,Universita Cattolica Del Sacro Cuore
International Journal of Hematology | Year: 2016

Standard front-line treatment for acquired aplastic anemia (AA) for patients is either immunosuppressive therapy (IST) or bone marrow transplantation (BMT), usually from an HLA identical sibling. Whereas long-term survival is comparable with either treatment, important differences remain: IST patients may have incomplete or no recovery, are exposed to late clonal disorders and relapse of the original disease. Transplantation is a curative treatment, but patients are exposed to transplant-related complications both acute and chronic, such as chronic graft versus host disease (cGvHD). In the year 2000, a study by the European Group for Blood and Marrow Transplantation (EBMT), looked at failure free survival (FFS), in patients receiving first-line BMT from an HLA identical sibling, or the first-line IST. Young patients with low neutrophil counts benefited of the first-line BMT; the opposite was true for older patients with higher neutrophil counts; and a third intermediate group of patients had comparable survival irrespective of the first-line therapy. We have now studied a more recent cohort of patients to assess whether things have changed over the years. We have found similar results, although overall survival has improved, as a consequence of changes in the IST and BMT protocols. © 2016, The Japanese Society of Hematology.

Vincenti S.,Universita` Cattolica del Sacro Cuore | Quaranta G.,Universita` Cattolica del Sacro Cuore | De Meo C.,Universita` Cattolica del Sacro Cuore | Bruno S.,Universita` Cattolica del Sacro Cuore | And 4 more authors.
Science of the Total Environment | Year: 2014

This study provides a detailed description of the distribution of non-fermentative gram-negative bacteria (NFGNB) collected in water sources (tap water and water used for haemodialysis and bronchoscope flushing) from different wards of a tertiary care hospital. The aim is to identify risk practices for patients or to alert clinicians to the possible contamination of environment and medical devices. The resistance profile of NFGNB environmental isolates has shown that more than half (55.56%) of the strains isolated were resistant to one or more antibiotics tested in different antimicrobial categories. In particular, 38.89% of these strains were multidrug resistant (MDR) and 16.67% were extensively drug resistant (XDR). The most prevalent bacterial species recovered in water samples were Pseudomonas aeruginosa, Pseudomonas fluorescens, Ralstonia pickettii and Stenotrophomonas maltophilia. Analysis of antibiotic resistance rates has shown remarkable differences between Pseudomonadaceae (P. aeruginosa and P. fluorescens) and emerging pathogens, such as S. maltophilia and R. pickettii. Multidrug resistance can be relatively common among nosocomial isolates of P. aeruginosa, which represent the large majority of clinical isolates; moreover, our findings highlight that the emergent antibiotic resistant opportunistic pathogens, such as R. pickettii and S. maltophilia, isolated from hospital environments could be potentially more dangerous than other more known waterborne pathogens, if not subjected to surveillance to direct the decontamination procedures. © 2014.

Cappa F.,Universita` Cattolica del Sacro Cuore | Suciu N.,Universita` Cattolica del Sacro Cuore | Trevisan M.,Universita` Cattolica del Sacro Cuore | Ferrari S.,Universita` Cattolica del Sacro Cuore | And 2 more authors.
Science of the Total Environment | Year: 2014

Glaciers are important ecosystems, hosting bacterial communities that are adapted to cold conditions and scarcity of available nutrients. Several works focused on the composition of bacterial communities in glaciers and on the long-range atmospheric deposition of pollutants in glaciers, but it is not clear yet if ski resorts can represent a source of point pollution in near-by glaciers, and if these pollutants can influence the residing bacterial communities.To test these hypotheses, 12 samples were analyzed in Madaccio Glacier, in a 3200ma.s.l. from two areas, one undisturbed and one close to a summer ski resort that is active since the 1930s. Chemical analyses found concentrations up to 43ngL-1 for PCBs and up to 168μgL-1 for PAHs in the contaminated area: these values are significantly higher than the ones found in undisturbed glaciers because of long-range atmospheric deposition events, and can be explained as being related to the near-by ski resort activities. Isolation of strains on rich medium plates and PCR-DGGE analyses followed by sequencing of bands allowed the identification of a bacterial community with phylogenetic patterns close to other glacier environments, with Proteobacteria and Actinobacteria the mostly abundant phyla, with Acidobacteria, Firmicutes and Cyanobacteria also represented in the culture-independent analyses. A number of isolates were identified by molecular and biochemical methods as phylogenetic related to known xenobiotic-degrading strains: glaciers subjected to chemical contamination can be important reservoirs of bacterial strains with potential applications in bioremediation. © 2014 Elsevier B.V.

Lanubile A.,Universita` Cattolica del Sacro Cuore | Ferrarini A.,Universita` Degli Studi Of Verona | Maschietto V.,Universita` Cattolica del Sacro Cuore | Delledonne M.,Universita` Degli Studi Of Verona | And 2 more authors.
BMC Genomics | Year: 2014

Background: Fusarium verticillioides causes ear rot in maize (Zea mays L.) and accumulation of mycotoxins, that affect human and animal health. Currently, chemical and agronomic measures to control Fusarium ear rot are not very effective and selection of more resistant genotypes is a desirable strategy to reduce contaminations. A deeper knowledge of molecular events and genetic basis underlying Fusarium ear rot is necessary to speed up progress in breeding for resistance.Results: A next-generation RNA-sequencing approach was used for the first time to study transcriptional changes associated with F. verticillioides inoculation in resistant CO441 and susceptible CO354 maize genotypes at 72 hours post inoculation. More than 100 million sequence reads were generated for inoculated and uninoculated control plants and analyzed to measure gene expression levels. Comparison of expression levels between inoculated vs. uninoculated and resistant vs. susceptible transcriptomes revealed a total number of 6,951 differentially expressed genes. Differences in basal gene expression were observed in the uninoculated samples. CO441 genotype showed a higher level of expression of genes distributed over all functional classes, in particular those related to secondary metabolism category. After F. verticillioides inoculation, a similar response was observed in both genotypes, although the magnitude of induction was much greater in the resistant genotype. This response included higher activation of genes involved in pathogen perception, signaling and defense, including WRKY transcription factors and jasmonate/ethylene mediated defense responses. Interestingly, strong differences in expression between the two genotypes were observed in secondary metabolism category: pathways related to shikimate, lignin, flavonoid and terpenoid biosynthesis were strongly represented and induced in the CO441 genotype, indicating that selection to enhance these traits is an additional strategy for improving resistance against F. verticillioides infection.Conclusions: The work demonstrates that the global transcriptional analysis provided an exhaustive view of genes involved in pathogen recognition and signaling, and controlling activities of different TFs, phytohormones and secondary metabolites, that contribute to host resistance against F. verticillioides. This work provides an important source of markers for development of disease resistance maize genotypes and may have relevance to study other pathosystems involving mycotoxin-producing fungi. © 2014 Lanubile et al.; licensee BioMed Central Ltd.

Polka J.,Universita` Cattolica del Sacro Cuore | Rebecchi A.,Universita` Cattolica del Sacro Cuore | Pisacane V.,Universita` Cattolica del Sacro Cuore | Morelli L.,Universita` Cattolica del Sacro Cuore | Puglisi E.,Universita` Cattolica del Sacro Cuore
Food Microbiology | Year: 2014

The bacterial diversity involved in food fermentations is one of the most important factors shaping the final characteristics of traditional foods. Knowledge about this diversity can be greatly improved by the application of high-throughput sequencing technologies (HTS) coupled to the PCR amplification of the 16S rRNA subunit. Here we investigated the bacterial diversity in batches of Salame Piacentino PDO (Protected Designation of Origin), a dry fermented sausage that is typical of a regional area of Northern Italy. Salami samples from 6 different local factories were analysed at 0, 21, 49 and 63 days of ripening; raw meat at time 0 and casing samples at 21 days of ripening where also analysed, and the effect of starter addition was included in the experimental set-up. Culture-based microbiological analyses and PCR-DGGE were carried out in order to be compared with HTS results. A total of 722,196 high quality sequences were obtained after trimming, paired-reads assembly and quality screening of raw reads obtained by Illumina MiSeq sequencing of the two bacterial 16S hypervariable regions V3 and V4; manual curation of 16S database allowed a correct taxonomical classification at the species for 99.5% of these reads. Results confirmed the presence of main bacterial species involved in the fermentation of salami as assessed by PCR-DGGE, but with a greater extent of resolution and quantitative assessments that are not possible by the mere analyses of gel banding patterns. Thirty-two different Staphylococcus and 33 Lactobacillus species where identified in the salami from different producers, while the whole data set obtained accounted for 13 main families and 98 rare ones, 23 of which were present in at least 10% of the investigated samples, with casings being the major sources of the observed diversity. Multivariate analyses also showed that batches from 6 local producers tend to cluster altogether after 21 days of ripening, thus indicating that HTS has the potential for fine scale differentiation of local fermented foods. © 2014 Elsevier Ltd.

PubMed | Universita` Cattolica del Sacro Cuore
Type: Case Reports | Journal: Journal of clinical microbiology | Year: 2011

We report the first documented case of a posttraumatic fungal keratitis caused by Neosartorya udagawae. The patient was empirically treated with fluconazole until a corneal scraping grew an Aspergillus fumigatus-like fungus, and itraconazole therapy was then established. A sequence-based approach assigned the isolate to the species. Five months after completion of antifungal therapy, endophthalmitis occurred and orbital exenteration was necessary.

PubMed | Universita` Cattolica del Sacro Cuore
Type: Journal Article | Journal: Clinical chemistry and laboratory medicine | Year: 2012

Asymmetric dimethylarginine (ADMA), an endogenous competitive inhibitor of nitric oxide synthase plays an important role in endothelial dysfunction processes. Recent studies have linked high ADMA levels with several pathological conditions. The interest as a marker of endothelial dysfunction has increased in the last few years. In this paper, a method for serum ADMA quantification by liquid chromatography tandem mass spectrometry has been described. To test the utility in a pathological condition ADMA levels in hypertensive subjects have been measured.HPLC separation was performed by hydrophilic interaction chromatography using acetonitrile/water containing 0.1% formic acid and 20 mmol/L ammonium formate. Selected reaction monitoring was performed following the transitions m/z 203.146.4 for ADMA and 210.146.3 for the internal standard [2H7]ADMA.The method was linear up to 10 mol/L, limit of detection and limit of quantification were 0.005 mol/L and 0.01 mol/L, respectively. Recovery was higher than 96%. Intra- and inter-assay imprecision were lower than 6%. The accuracy, expressed as bias %, was <2.5. ADMA in healthy subjects ranged from 0.343 to 0.608 mol/L and resulted significantly lower than that measured in hypertensive subjects (p<0.001).The method developed is selective and sensitive, thus suitable not only for research purposes, but also for routinely work.

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