0000000000166723
AUTHOR
Cappello F
Progettazione di un dispositivo paraincastro posteriore ad elevata dissipazione di energia per veicoli industriali
Heat Shock Proteins exosomal localization and levels in non-tumoral and tumoral thyroid tissues
Exosomes (EXs) secreted from cells to the extracellular environment play an important role in intercellular communication in normality and pathology. In particular, EXs contribute to cancer progression through the modulation of tumor microenvironment. Heat Shock Proteins (Hsps) are implicated in the development of carcinogenic process because they interact with many metabolic and biomolecular mechanisms of cancer cells [1]. Different studies shown that they can be released by tumors cells and that the mechanism of release is mediated by EXs pathway. In this study we performed an immunomorphological and biomolecular analysis to investigate Hsp27, Hsp60, Hsp70, Hsp90 levels expression profile…
HSP10 selective preference for myeloid and megakaryocytic precursors in normal human bone marrow
Heat shock proteins (HSPs) constitute a heterogeneous family of proteins involved in cell homeostasis. During cell life they are involved in harmful insults, as well as in immune and inflammatory reactions. It is known that they regulate gene expression, and cell proliferation, differentiation and death. HSP60 is a mitochondrial chaperonin, highly preserved during evolution, responsible of protein folding. Its function is strictly dependent on HSP10 in both prokaryotic and eukaryotic elements. We investigated the presence and the expression of HSP60 and HSP10 in a series of 20 normal human bone marrow specimens (NHBM) by the means of immunohistochemistry. NHBM showed no expression of HSP60,…
Design of a new high energy rear underrun protective device
In recent years the vehicle design field has followed a progressive evolution by focusing its main interest on passive and active safety levels. One of the most injurious cases for the safety of passengers is the crash between a car and a heavy vehicle (truck). Generally, in fact, when such an occurrence happens, the greatest damage is suffered by the passengers of the car. This is because of the considerable structural difference between the two vehicles and the lack of devices to reduce the injuries of the car passengers. In this work, as a consequence of the previous considerations, we deal with the design of a new protective system for heavy vehicles over 3.5 tons. The new rear underrun…
COLORECTAL CANCER AND INFLAMMATORY BOWEL DISEASES: EFFECTS ON DIET AND ANTIOXIDANTS
It is well established that oxidative stress is common in inflammatory bowel diseases (IBDs). Accordingly, antioxidants are recommended for treatment. The aim of this study is to compare the effects of antioxidants contained in the various types of tea on symptoms and evolution of IBD and colorectal cancer (CRC). Analysis of the literature revealed that the theaflavin-3, 30-digallate (TFDG) contained in black tea, and epigallocatechin-3-O-gallate (EGCG) contained in green tea have protective effects against oxidative stress. Moreover, these substances are involved in many biochemical processes responsible for inflammation and proliferation of cancer cells. It is documented that both TFDG an…
Isolation and characterization of circulating exosomes from blood in brain tumors
Exosomes (EXs) are crucial in mediating intercellular communication in physiological and pathological conditions. Accordingly, tumor-secreted EXs play an important role in regulating tumor malignancy. Tumor-derived exosomes contain proteins, mRNAs, and miRNAs, which can be delivered between different types of cells and even transferred to distant locations to influence the biological activities of tumors, such as proliferation, invasion and metastasis (1). Clinically, tumor-derived EXs may represent a target for therapeutic intervention and for the development of early diagnostic biomarkers (2). In our laboratory, we have focused on the isolation, morphological analyses, determination of par…
L’ottimizzazione topologica come strumento di innovazione
EXPERIMENTAL TESTS OF FATIGUE INDUCED DELAMINATION IN GFRP LAMINATES
Exosomal HSP60 levels and related miRNAs in brain tumors
In cancer, Extracellular Vesicles (EVs), such as exosomes, contribute to tumor progression by regulating local and systemic parameters [1,2]. Since exosomes are released into body fluids, they may be used in nanomedicine as a valuable source of diagnostic biomarkers [3]. The prognosis of brain tumors is poor even after surgical resection followed by post-operatory chemo- and radio-therapies and it is cogent to find innovative treatments. The discovery that molecular chaperones can be determinant factors in tumorigenesis and the increasing understanding of exosomes, particularly in what refers to their release by tumor cells and contents, including chaperones and miRNA, provide elements to d…
A 30 YEAR EXPERIENCE IN THE MANAGEMENT OF ANAL FISTULA
Anal fistula has been recognized for centuries, and yet, its treatment remains a challenge for surgeons till today. in this study, a 30 year experience of treating anal fistula is being reported and discussed in light of the various recognized management methods. A total of 320 patients were treated by fistulotomy, fistilectomy, fistula plugging, or seton technique. Data showed that fistula plugging carried the highest failure rate (89%) seconded by fistulectomy (37%), seton procedure (24,5%) and fistulotomy (15,6%). High transphincteric fistulas were more likely to predict failure compared to low transphinteric; intersphinteric and subcutaneous fistulas (37,5% versus 9,5 %, 7,3% and 0% res…
Human recombinant vasostatin-1 may interfere with cell-extracellular matrix interactions
Vasostatin-1 (VS-1), the N-terminal fragment derived from the cleavage of chromogranin A (CgA), has been shown to exert several biological activities on several tissues and organs. Recently, it has been reported that human recombinant VS-1 (STA-CGA(1-78)) may alter myocardial contractility in eel, frog., and rat hearts. In this article we have explored if STA-CGA(1-78) can induce intracellular cascades interacting both with adhesion molecules and/or extracellular matrix (ECM), components, that is, involvement of the heat shock protein 90 (HSP90) and the endothelial NOS (eNOS), known to be implicated in signal transduction mechanisms affecting myocardial contractility. We used 3D cultured ad…
Comparative analysis of Hsp10 and Hsp90 expression in healthy mucosa and adenocarcinoma of the large bowel.
Heat shock proteins (Hsps) assist other proteins in their folding and drive the degradation of defective proteins. During evolution, these proteins have also acquired other roles. Hsp10 is involved in immunomodulation and tumor progression. Hsp90 stabilizes a range of "client" proteins involved in cell signaling. The present study evaluated the expression levels of Hsp10 and Hsp90 in normal mucosa and adenocarcinoma samples of human large bowel.Samples of normal mucosa and adenocarcinoma were collected and Reverse transcriptase-polymerase chain reaction RT-PCR, western blotting (WB) analyses, as well as immunohistochemistry were performed to evaluate the expression levels of Hsp10 and Hsp90…
Medial tunica degeneration of the ascending aortic wall is associated with specific microRNA changes in bicuspid aortic valve disease
Ascending aortic diameter is not an accurate parameter for surgical indication in patients with bicuspid aortic valve (BAV). Thus, the present study aimed to identify specific microRNAs (miRNAs/miRs) and their expression levels in aortic wall aneurysm associated with BAV according to severity of medial degeneration and to elucidate the association between the tissue expression levels of the miRNAs with their expression in plasma. Aortic wall and blood specimens were obtained from 38 patients: 12 controls and 26 patients with BAV with ascending aortic aneurysm. Of the patients with BAV, 19 had cusp fusions of right and left, 5 of right and non-coronary, and 2 of left and non-coronary. Two gr…
MIXED-MODE DELAMINATION TESTS ON COMPOSITES UNDER FATIGUE LOADS
Histone Variant MacroH2A1 Marks Liver Aging and Orchestrates the Escape from Senescence Induced by DNA Hypomethylation in Hepatocellular Carcinoma
The epigenetic basis of age-associated progression of liver diseases towards hepatocellular carcinoma (HCC) is unclear. MacroH2A1 is a variant of histone H2A1, present in the two isoforms, with fundamental roles in cell homeostasis. MacroH2A1 is a marker of senescence associated heterochromatic foci (SAHF) and synergizes with DNA demethylating chemotherapic agent 5-aza-2'-deoxycytidine (5-aza-dC) in silencing tumor suppressor genes in human fibroblasts. We show that protein levels of macroH2A1 isoforms are increased in the livers of old rodents and humans, and in human HCC tissue. Human HCC cells overexpressing macroH2A1 escape a 5-aza-dC-induced senescent phenotype, as determined by cell p…