123 research outputs found
Skeletal maturation in obese patients
The objective of this study was to compare skeletal maturation in obese patients and in subjects of normal weight to evaluate the best timing for orthopedic and orthodontic treatment. The null hypothesis was that obese and normal-weight patients show similar degrees of skeletal maturation. Methods: The sample for this retrospective study consisted of 50 white patients (28 boys, 22 girls) whose x-rays (hand-wrist and lateral cephalometric radiographs) were already available. The test group included 25 obese patients (11 girls, 14 boys; average age, 9.8 ± 2.11 years), and the control group included 25 subjects of normal weight (11 girls, 14 boys; average age, 9.9 ± 2.5 years). Skeletal maturation was determined by using the carpal analysis method and the cervical vertebral maturation method. Results: According to the carpal analysis, there was a significant difference between skeletal and chronologic ages between the test group (11.8 ± 11.4 months) and the control group (-2.9 ± 3.1 months). Furthermore, the obese subjects exhibited a significantly higher mean cervical vertebral maturation score (2.8 ± 0.7) than did the control subjects (2 ± 0.6) (P <0.05). Conclusions: Compared with the normal-weight subjects, the obese subjects showed a higher mean discrepancy between skeletal and chronologic ages according to the carpal analysis and had a significantly higher cervical vertebral maturation score. Thus, to account for the growth in obese patients with skeletal discrepancies, it might be necessary to perform examinations and dentofacial and orthopedic treatments earlier than in normal-weight subjects
In-office bacteria test for a microbial monitoring during the conventional and self-ligating orthodontic treatment
This study investigated the microbial level of Streptococcus mutans and Lactobacillus spp. during an orthodontic treatment, and compare the data with untreated control subjects.Sixty young adult subjects were selected (average 20.5, DS 1.62), among which 40 underwent an orthodontic treatment (20 were treated with self-ligating brackets and 20 with conventional brackets) and 20 were controls. Plaque Index, salivary flow and buffering capacity of saliva were assessed before the beginning of the orthodontic treatment. Then the microbial counts were obtained by using an in-office bacteria test.The plaque index (PI) increased over time in each group as well as salivary flow, mostly in subjects treated with self-ligating brackets, suggesting a difference between conventional and self-ligating brackets. S.mutans showed a different trend of colonization in the two treated groups, as for subjects treated with conventional brackets it showed the greater value at the early stage of treatment (T1), followed by a decrease at T2. Lactobacillus spp. showed significant increase over time in the two treated groups, respect to the control group. Linear regression analysis showed no significant predictor for the microbial count at T2.The assortment of the various species of bacteria change over time during the orthodontic treatment, and seems to show different trends, depending on the type of orthodontic device. Consequently a periodical microbial monitoring using in-office bacteria tests, seems indicated
Detection of ST1702 Escherichia coli blaNDM-5 and blaCMY-42 genes positive isolates from a Northern Italian hospital
We describe two multi drug-resistant (MDR) carbapenemase-producing Escherichia coli clinical isolates from an acute hospital in Milan. Both strains, isolated from a surgical wound sample and a surveillance rectal swab respectively, were positive for a blaNDM-type gene by Xpert Carba-R test. The whole-genome sequence characterization disclosed several resistance determinants: blaNDM-5, blaCMY-42, blaTEM-198, rmtB, mphA. The two isolates belonged to phylogenetic group A, sequence type (ST) 1702 and serotype O89:H9. PCR-based replicon typing and conjugation assay demonstrated an IncI1 plasmid localization for both blaNDM-5 and blaCMY-42 genes. This is the first report of a ST1702 NDM-5 and CMY-42- producing E. coli clone in Italy
Religious Pilgrimage: Experiencing Places, Objects and Events
This article explores the concept of the Eventization of faith (Pfadenhauer, 2010) through application of three case studies, to identify learning that might be applied to a traditional pilgrimage destination, such as Jerusalem. This Holy City is held sacred by the three Abrahamic religions, and faith-based tourism is central both to the Holy Land and to the city of Jerusalem (Leppakari & Griffin, 2017). This paper builds on research that identifies processes and models that provide insight into the developing concept of the eventization of faith. The work examines outcomes from three different perspectives: - The impact of traditional church-led pilgrimages to places in the Holy Land, on participants and their local church communities. - The successful eventization of the Lindisfarne Gospels as part of their release to Durham University in 2013, and the impact on local historical, cultural and religious identity and heritage (Dowson, 2019). - The shared pilgrimage experience of thousands of Christian women participating in the annual Cherish Conference in Leeds, Yorkshire, held in a secular event venue (Dowson, 2016). In analysing these three case study examples, this paper aims to identify factors that might enhance our understanding of the concept of eventization of faith. Utilising face to face interviews and online survey results, the research focuses on the aspects of community, identity and authenticity. Events enable shared experiences in a faith context (Lee et al., 2015), and so this research develops a model that captures and expresses approaches that might encourage pilgrimages to traditional destinations, through the medium of events, adding insight into the development of the academic concept of Eventization of Faith
Production of cellulase-free xylanase by Aspergillus flavus: Effect of polyols on the thermostability and its application on cellulose pulp biobleaching
The production of xylanase without cellulase is required for prebleaching of pulp in pulp and paper industry. Aspergillus flavus produced high levels of xylanase on agricultural residues with wheat bran and sugarcane bagasse (4.17 U/mg), and wheat bran and corncob (2.97 U/mg). Xylanase was found to be stable at 45°C with 100% of its original activity remaining after 2 h incubation. At 50°C, xylanase was stable for the first twenty minutes, and had half-life of 50 min. The pH stability for the xylanase from A. flavus was most stable in the range of pH 3.0-8.0 retaining more that 100% activity after 1 h. The addition of 5% glycerol, mannitol or xylitol protected the xylanase from thermal inactivation at 50°C. The protective effect by glycerol, xylitol and mannitol resulted in increases of 162, 262.5 and 150% when compared with the control at 120 min, approximately. Increasing the polyols concentration up to 20% (w/v) further improved the thermostability of xylanase after 120 min at 50°C by 300% when compared with the control (no additive). The kappa number reduced 2.56 points, which corresponds to 18.34 kappa efficiency. This xylanase is an attractive enzyme for potential future application in the pulp and paper industries, since industrial application requires a cellulase-free activity, maintenance of high temperature and enzyme stability are desirable.Key words: Aspergillus flavus, polyols, xylanase, biobleaching cellulose pulp
Expression of Îł-globin genes in ÎČ-thalassemia patients treated with sirolimus: results from a pilot clinical trial (Sirthalaclin)
Introduction: ÎČ-thalassemia is caused by autosomal mutations in the ÎČ-globin gene, which induce the absence or low-level synthesis of ÎČ-globin in erythroid cells. It is widely accepted that a high production of fetal hemoglobin (HbF) is beneficial for patients with ÎČ-thalassemia. Sirolimus, also known as rapamycin, is a lipophilic macrolide isolated from a strain of Streptomyces hygroscopicus that serves as a strong HbF inducer in vitro and in vivo. In this study, we report biochemical, molecular, and clinical results of a sirolimus-based NCT03877809 clinical trial (a personalized medicine approach for ÎČ-thalassemia transfusion-dependent patients: testing sirolimus in a first pilot clinical trial, Sirthalaclin). Methods: Accumulation of Îł-globin mRNA was analyzed using reverse-transcription quantitative polymerase chain reaction (PCR), while the hemoglobin pattern was analyzed using high-performance liquid chromatography (HPLC). The immunophenotype was analyzed using a fluorescence-activated cell sorter (FACS), with antibodies against CD3, CD4, CD8, CD14, CD19, CD25 (for analysis of peripheral blood mononuclear cells), or CD71 and CD235a (for analysis of in vitro cultured erythroid precursors). Results: The results were obtained in eight patients with the ÎČ+/ÎČ+ and ÎČ+/ÎČ0 genotypes, who were treated with a starting dosage of 1 mg/day sirolimus for 24â48 weeks. The first finding of this study was that the expression of Îł-globin mRNA increased in the blood and erythroid precursor cells isolated from ÎČ-thalassemia patients treated with low-dose sirolimus. This trial also led to the important finding that sirolimus influences erythropoiesis and reduces biochemical markers associated with ineffective erythropoiesis (excess free α-globin chains, bilirubin, soluble transferrin receptor, and ferritin). A decrease in the transfusion demand index was observed in most (7/8) of the patients. The drug was well tolerated, with minor effects on the immunophenotype, and an only side effect of frequently occurring stomatitis. Conclusion: The data obtained indicate that low doses of sirolimus modify hematopoiesis and induce increased expression of Îł-globin genes in a subset of patients with ÎČ-thalassemia. Further clinical trials are warranted, possibly including testing of the drug in patients with less severe forms of the disease and exploring combination therapies. © The Author(s), 2022
Hyperbaric exposure and oxidative Stress in occupational activities (HEOxS): the study protocol
Background: Hyperbaric exposure (HE) is proven to be a stressor to several mechanisms in living cells.
Even if after homeostasis restoration, harmful effects are expected, in particular a presence of free
radicals. These latter are the stimulus to negative phenomenon as inflammation or cancer. In Italy,
with 7500 km of sea shores, a large quantity of workers is exposed to HE during occupational
activities. A deep knowledge of HE and bodily effects is not well defined; hence a multidisciplinary
assessment of risk is needed. To detect one or more indicators of HE a research group is organised,
under the INAIL sponsorship. The research project focused on the oxidative stress (OxS) and this
paper details on the possible protocol to estimate, with a large amount of techniques on several
human liquids, the relationship between OxS and HE. Specific attention will be paid to identify
confounding factors and their influence.
Methods: Blood and urine will be sampled. Several lab techniques will be performed on samples, both
targeted, to measure the level of well-known biomarkers, and untargeted. Regard the formers:
products of oxidation of DNA and RNA in urine; inflammation and temperature cytokines and
protein carbonyles in blood. Untargeted evaluation will be performed for a metabolomics analysis in
urine. Confounding factors: temperature, body fat, fitness, allergies and dietary habits. These factors
will be assessed, directly or indirectly, prior and after HE. The final scope of the project is to determine
one or more indicators that relates to HE in hits twofold nature: depth and duration.
Conclusion: The relationship between OxS and HE is not deeply investigated and literature proposes
diverging results. The project aims to define the time dependence of biomarkers related to OxS, to
rise knowledge in risk assessment in workers exposed to HE
Years of life that could be saved from prevention of hepatocellular carcinoma
BACKGROUND:
Hepatocellular carcinoma (HCC) causes premature death and loss of life expectancy worldwide. Its primary and secondary prevention can result in a significant number of years of life saved.
AIM:
To assess how many years of life are lost after HCC diagnosis.
METHODS:
Data from 5346 patients with first HCC diagnosis were used to estimate lifespan and number of years of life lost after tumour onset, using a semi-parametric extrapolation having as reference an age-, sex- and year-of-onset-matched population derived from national life tables.
RESULTS:
Between 1986 and 2014, HCC lead to an average of 11.5 years-of-life lost for each patient. The youngest age-quartile group (18-61 years) had the highest number of years-of-life lost, representing approximately 41% of the overall benefit obtainable from prevention. Advancements in HCC management have progressively reduced the number of years-of-life lost from 12.6 years in 1986-1999, to 10.7 in 2000-2006 and 7.4 years in 2007-2014. Currently, an HCC diagnosis when a single tumour <2 cm results in 3.7 years-of-life lost while the diagnosis when a single tumour 65 2 cm or 2/3 nodules still within the Milan criteria, results in 5.0 years-of-life lost, representing the loss of only approximately 5.5% and 7.2%, respectively, of the entire lifespan from birth.
CONCLUSIONS:
Hepatocellular carcinoma occurrence results in the loss of a considerable number of years-of-life, especially for younger patients. In recent years, the increased possibility of effectively treating this tumour has improved life expectancy, thus reducing years-of-life lost
Terrorism, Tourism and Religious Travellers
Curiously, while tourism is cited as the worldâs largest industry (UNWTO, 2016), it is simultaneously a fragile industry that is highly vulnerable to the impact of the ongoing threat of terrorism. Internationally, terrorism influences the tourist mind-set in a number of ways, in particular it creates fear for travellers and causes economic and social impacts to change the behaviour of people and dissuade them from visiting certain places in the world. Thus, the impact of terrorism has caused tremendous damage to the travel industry. A number of countries which previously depended quite heavily on the tourism industry are suffering in terms of economic development. This paper discusses critical issues related to terrorism, that are faced by travellers to religious and sacred sites. The paper will illustrate the impact of recent terrorism phenomena upon travellers in two ways: first, the potential personal hazards to travellers caused by terrorist incidents; second, the impacts caused by stringent anti-terrorism laws and security measures, to travellers while they are in transit
Updated Italian Tetrapod Ichnology Reference List
We provide a list of contribution by Italian scientists to tetrapod ichnology with papers on both material
from Italy and abroad. Foreign authorâs contributions on tetrapod ichnology based on material from Italy are also
considered. The list updates the previous one published by DâOrazi Porchetti et al. (2008) and, as a result, includes works from 1869 up to now. Following the previous reference list, papers of non-Italian researchers on foreign material are reported when the material was found on Italian territory at the time of publication
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