4,044 research outputs found
Lagrangian Coherent Structures as a new frame to investigate the particle transport in highly chaotic magnetic systems
The discovery of stapes
Giovanni Filippo Ingrassia revisited and redefined some of Galeno's reports, and was recognized as one of the leading Italian Physicians of the 16(th) century. Ingrassia principally studied the skull, and gave very important contributions to otorhinolaryngology, including the discovery of the stapes. He also isolated the inferior nasal concha from the maxillary bone, described the frontal sinus, the pterygopalatine fossa and several foramina of the skull. Ingrassia firstly attributed a sensorial function to the middle ear bones, which he called fifth particular function. He also added some details to the description of the VIII cranial nerve, which introduces the concept of bone conducting sound. The most important discovery in Ingrassia's study about the hearing organ was the first description of the third bone of the ossicular chain that he called "stapes". Ingrassia should thus be reconsidered under a new light for his important discovery and for his intuitions about the stapes and its role in hearing. It is appropriate for a Sicilian physician to be placed at his rightful place side-by-side with Eustachio and Valsalva in the history of otology
HEAT SHOCK PROTEINS AND ULCERATIVE COLITIS: THE START OF A NEW ERA?
We read with great interest the article written by Abou El Azm
and coworkers, published in the last issue of the Arab Journal of
Gastroenterology [1]. In this article, the authors investigated the
molecular expression of heat shock proteins (HSP) 70 and 90 in
relation to the grades of inflammation and dysplasia in patients
with ulcerative colitis (UC) before and after treatment.
In this study, in agreement with other published studies [2–4],
the authors not only found a potential role for HSP 70 and HSP 90
for assessment of the activity and prognosis of UC, but also such
markers predicted the presence of dysplasia and differentiated it
from reactive atypia [1].
HSP had been found not only a marker of active disease, thus
considering UC as a ‘‘chaperonopathy by mistake’’, but also show
a key role in the psychosocial setting in which inflammatory bowel
diseases manifest themselves [5]. Furthermore, they could represent
a new diagnostic tool to differentiate the different phenotypes
of UC, thus allowing to tailor a targeted approach to better manage
UC patients [6].
However, some unresolved issues still remain about the potential
roles of HSP in both the acute and the longstanding disease. First, it
should be interesting to assess the role of HSP in the infections
associated to UC flares, like Clostridium difficile and Cytomegalovirus
(CMV) infections. In fact, HSP could be investigated as a further
marker of inflammation in case of severe and steroid-refractory
disease; with regard to CMV infection, mucosal levels of HSP could
differentiate when CMV plays a role of direct pathogen or when it
represents merely a ‘‘silent bystander’’. Second, in longstanding
UC, an integrated approach of colorectal cancer surveillance, by
using the advanced endoscopic imaging together with mucosal
markers, like HSP, could result in being markedly helpful, both to
clinicians and pathologist. In fact, current guidelines recommend
that image-enhanced endoscopy (IEE) may increase the yield of
detection of dysplasia, thus representing a reasonable alternative
to the random sampling of colon using standard white light [7].
The use of both IEE and new biomarkers, like HSP, predicting future
occurrence of colonic neoplasia, could lead to a more centralised
approach of UC patients, in which a ‘‘biomarker-based surveillance’’
might play a pivotal rol
Euromediterranean Biomedical Journal: the renewed journal of young doctors aims even higher.
In January 2006, a new journal, Capsula Eburnea, was born in the Italian scientific pub-lishing scene, with the initial goal of creating, at the same time, “an open scientific forum and a blog”. Until December 2009, the vast majority of manuscripts was still published in Italian, restricting the number of readers.
From the end of 2009, the journal has undergone extensive changes, becoming indexed in the main scientific search engines (Scopus, Directory of Open Access Journal, Google Scholar, Ulrich Periodical Directory), and renewing its Editorial Team with a role reassign-ment and expanding the Editorial Board to up to 40 young doctors with proven scientific experience from 15 countries around the world, working as researchers, PhD students, senior medical staff, research fellows or doctors in specialist training.
Finally, the journal has progressively encouraged the publication of articles in English, through an endorsed English translation service provided by native English speaking translators. This service became mandatory for all peer-reviewed articles accepted by the Journal in 2011.
At the same time, the Editorial Board unanimously decreed to change the name of the journal into “Euromediterranean Biomedical Journal for young doctors (formerly: Capsula Eburnea)” from January 2012.
Today, the journal is fully open access (including the archives of Capsula Eburnea) with the possibility to download articles for free, and the publication process involves a blind peer review of each article by at least two scientists. During its first two years of activity, the Euromediterranean Biomedical Journal (EMBJ) published 48 scientific articles (17 origi-nal articles, 14 reviews, 13 case report, two technical reports and two commentaries) and one edition of Conference Proceedings
Plantar pressure distribution analysis in normal weight young women and men with normal and claw feet: a cross-sectional study
We analyzed the plantar support in 72 normal-weight young voluntaries (46 women, 26 men), by a baropodometric platform. We considered subjects with claw foot (CFS) and subjects with normal foot (NFS). We found a significant reduction of total plantar support surface in the CFS (P < 0.0001 for women, P < 0.001 for men), due to the reduction of the forefoot and rear foot areas of both plantar imprints. Indeed, CFS of both sexes exhibited higher values of both plantar pressure and peak pressure, compared to the NFS. Moreover, the load per units of plantar surface increased in CFS compared to the NFS. In conclusion, the reduction of plantar support surfaces in CFS of both sexes was associated to a major load per units of plantar surface in the forefoot and rear foot areas, and this may be a risk factor to lower extremity overuse injuries
Heat shock protein 70 serum levels differ significantly in patients with chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma.
Members of the heat shock protein 70 (HSP70) family play an important role in assisting protein folding, preventing protein aggregation and transport of proteins across membranes under physiological conditions. Following environmental (i.e., irradiation, chemotherapy), physiological (i.e., cell growth, differentiation), and pathophysiological (i.e., inflammation, tumorigenesis) stress, the synthesis of heat shock proteins (HSPs) is highly up-regulated, whereas protein synthesis in general is reduced. In contrast to normal cells, many tumor entities including hepatocellular carcinoma (HCC) overexpress HSP70, the major-stress-inducible member of the HSP70 family, present it on their cell surface and secrete it into the extracellular milieu. Herein, the prognostic relevance of serum HSP70 levels in patients with chronic hepatitis (CH; n = 50), liver cirrhosis (LC; n = 46), and HCC (n = 47) was analyzed. Similar to other tumor entities, HSP70 is also present on the surface of primary HCC cells. The staining intensity of intracellular HSP70 in HCC tissue is stronger compared to control and cirrhotic liver sections. HSP70 serum levels in all HCC patients were significantly higher compared to a control group without liver disease (n = 40). No significant age- and gender-related differences in HSP70 serum levels were observed in male and female healthy human volunteers (n = 86). Patients with CH (n = 50) revealed significantly higher HSP70 serum levels compared to the control group, however, these values were significantly lower than those of HCC patients (n = 47). Furthermore, a subgroup of patients with LC who subsequently developed HCC (LC-HCC, n = 13) revealed higher HSP70 serum levels than patients with LC (n = 46, p = 0.05). These data indicate that serum HSP70 levels are consecutively increased in patients with CH, LC and liver carcinomas and thus might have a prognostic value
Lymphatic vessels of the dura mater: A new discovery?
Two recent paper s (Aspelund et al. 2015; Louveau et al.
2015) reported the presence in mice of lymphatics in the
cerebra l dura mater , the most external of the meningeal
layers covering the brain. This datum was reporte d as a
novel discovery in the \ufb01elds of neuroanatomy and neuroim-
munology
EUROMEDITERRANEAN BIOMEDICAL JOURNAL: THE RENEWED MANUSCRIPT LAYOUT AND WEB RENDERING FORESHADOW FURTHER JOURNAL IMPROVEMENT
In January 2006, a new journal, Capsula Eburnea, was born into the Italian scientific publishing scene with the initial goal of creating, at the same time, \u201can open scientific forum and a blog\u201d, based on the premise that \u201cin medicine, nothing should be considered stable, immutable or unsusceptible to critical review at any time, by any scientist\u201d. The Editorial Team progressively sought to improve the quality of the manuscripts published, introducing the requirement for all articles to be written in English, and changed the Journal\u2019s name to EuroMediterranean Biomedical Journal in 2012. Over the last five years, approximately 125 articles by young doctors (including original articles, reviews, commentaries, notes, and abstract books) have been published. The editorial board are confident that the new publishing layout and the renewed web-portal of the journal, introduced in this editorial, represent an essential upgrade after over 10 years of editorial activity, and that these improvements will be appreciated by our authors and, especially, our readers
Dermoscopy of uncommon variants of dermatofibrosarcoma protuberans
Darier-Ferrand dermatofibrosarcoma protuberans (DFSP) is a locally aggressive fibrohistiocytic tumour with a low metastatic potential.(1) Because of its rarity, slow progression and lack of early clinical clues, the diagnosis of DFSP is often delayed. Classical DFSP clinically appeared like an indurated, irregularly-shaped plaques exhibiting flesh to reddish-brown colour. Some lesions also showed thin teleangectasia on the surface (Fig. 1, a). This article is protected by copyright. All rights reserved
INFLAMMATION IN IRRITABLE BOWEL SYNDROME: MYTH OR NEW TREATMENT TARGET?
Low-grade intestinal inflammation plays a key role in the pathophysiology of irritable bowel syndrome (IBS), and this role is likely to be multifactorial. The aim of this review was to summarize the evidence on the spectrum of mucosal inflammation in IBS, highlighting the relationship of this inflammation to the pathophysiology of IBS and its connection to clinical practice. We carried out a bibliographic search in Medline and the Cochrane Library for the period of January 1966 to December 2014, focusing on publications decribing an interaction between inflammation and IBS. Several evidences demonstrate microscopic and molecular abnormalities in IBS patients. Understanding the mechanism underlying low-grade inflammation in IBS may help to design clinical trials to test the efficacy and safety of drugs that target this pathophysiologic mechanism
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