G De Rosa

University of Naples Federico II, Napoli, Campania, Italy

Are you G De Rosa?

Claim your profile

Publications (371)1023.54 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Nodular fasciitis (NF) is a non-neoplastic proliferation within the subcutaneous tissue and the deep fascia of the fibroblasts, probably of a reactive nature characterized by apparent infiltration of the connective tissues by a mitotically active spindle cell lesion. NF in the head/neck region is rarely found and only 2 previous cases affecting the tongue have been reported. We report a very rare case of a 67-year-old man with a history of a 3 months sub-epithelial asymptomatic nodule of the tongue tip with an ulcerated surface. An excisional biopsy of the mass was performed with 0.5 mm surgical margins. The clinical and histological features of NF may mimic an head and neck malignancy leading to it often being misdiagnosed as a malignant mesenchymal neoplasm. Even if is a rare entity, NF should be considered in cases of rapidly growing masses of the head and neck region. This article is protected by copyright. All rights reserved. © 2015 Wiley Periodicals, Inc.
    Head & Neck 04/2015; DOI:10.1002/hed.24088 · 3.01 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Melanoma of the anal cavity is an uncommon malignant tumor with an aggressive clinical behavior. The presence of nonmelanocytic cell or tissue components, designated as divergent differentiation, is an unusual but well-documented phenomenon in melanoma. We experienced a rare case of amelanotic melanoma with neuroendocrine differentiation of the anal canal, occurring in a 68-year old woman. This tumor was characterized by a clear-cut radial growth phase and an invasive component composed of a diffuse small cells population positive for neuroendocrine markers with a focal but convincing co-expression of S100 protein. To the best of our knowledge, this represents the first case of neuroendocrine differentiation in a primary melanoma of the anal cavity. Although anal melanoma with neuroendocrine differentiation is exceptional, clinical practitioners should be aware of its possibility at this site. © The Author(s) 2015.
    International Journal of Surgical Pathology 02/2015; 23(4). DOI:10.1177/1066896915573568 · 0.96 Impact Factor
  • Source
  • Journal of the European Academy of Dermatology and Venereology 08/2014; DOI:10.1111/jdv.12698 · 3.11 Impact Factor
  • Source
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Introduction. Although altered regulation of the Wnt pathway via beta-catenin is a frequent event in several human cancers, its potential implications in oral/oropharyngeal squamous cell carcinomas (OSCC/OPSCC) are largely unexplored. Work purpose was to define association between beta-catenin expression and clinical-pathological parameters in 374 OSCCs/OP-SCCs by immunohistochemistry (IHC). Materials and Methods. Association between IHC detected patterns of protein expression and clinical-pathological parameters was assessed by statistical analysis and survival rates by Kaplan-Meier curves. Beta-catenin expression was also investigated in OSCC cell lines by Real-Time PCR. An additional analysis of the DNA content was performed on 22 representative OSCCs/OPSCCs by DNA-image-cytometric analysis. Results and Discussion. All carcinomas exhibited significant alterations of beta-catenin expression (P < 0.05). Beta-catenin protein was mainly detected in the cytoplasm of cancerous cells and only focal nuclear positivity was observed. Higher cytoplasmic expression correlated significantly with poor histological differentiation, advanced stage, and worst patient outcome (P < 0.05). By Real-Time PCR significant increase of beta-catenin mRNA was detected in OSCC cell lines and in 45% of surgical specimens. DNA ploidy study demonstrated high levels of aneuploidy in beta-catenin overexpressing carcinomas. Conclusions. This is the largest study reporting significant association between beta-catenin expression and clinical-pathological factors in patients with OSCCs/OPSCCs.
    01/2014; 2014:948264. DOI:10.1155/2014/948264
  • Cytopathology 10/2013; 25(5). DOI:10.1111/cyt.12107 · 1.47 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The discovery that survivin, a small anti-apoptotic protein, is involved in chemoresistance, opens a new scenario to overcome the drug resistance in cancer. It was shown that siRNA can efficiently inhibit the expression of survivin in cancer cells. However, the clinical use of siRNA is still hampered by an unfavorable pharmacokinetic profile. To address this problem, earlier we developed a novel system to deliver siRNA into cancer cells. Namely, we reversibly modified the survivin siRNA with a phosphothioethanol (PE) portion via a reducible disulfide bond and incorporated the resulting siRNA-S-S-PE conjugate into nanosized polyethyelene glycol2000-phosphatidyl ethanolamine (PEG2000-PE)-based polymeric micelles (PM), obtaining survivin siRNA PM. The activity of these nanopreparations was evaluated by survivin protein down-regulation, tumor cell growth inhibition, and chemosensitization of the treated tumor cells to paclitaxel (PXL). We found a significant decrease of cell viability and down-regulation of survivin protein levels after treatment with survivin siRNA PM in several cancer cell lines. In addition, the down-regulation of survivin by treating cells with survivin siRNA PM, elicited a significant sensitization of the cells to PXL, in both sensitive and resistant cancer cell lines. Finally, we demonstrate successful co-delivery of PXL and survivin siRNA in the same PM leading to superior therapeutic activity compared to their sequential administration. Our results support the use of this new platform for the treatment of the most aggressive tumors.
    Cancer letters 10/2013; 343(2). DOI:10.1016/j.canlet.2013.09.037 · 5.02 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Intrinsic and acquired drug resistance of tumor cells still causes the failure of treatment regimens in advanced human cancers. It may be driven by intrinsic tumor cells features, or may also arise from micro environmental influences. Hypoxia is a microenvironment feature associated with the aggressiveness and metastasizing ability of human solid cancers. Hypoxic cancer cells overexpress Carbonic Anhydrase IX (CA IX). CA IX ensures a favorable tumor intracellular pH, while contributing to stromal acidosis, which facilitates tumor invasion and metastasis. The overexpression of CA IX is considered an epiphenomenon of the presence of hypoxic, aggressive tumor cells. Recently, it has been hypothesized the relationship between CA IX overexpression and the cancer stem cells (CSCs) population. CSC, are strictly regulated by tumor hypoxia, and drive a major non-mutational mechanism of cancer drug-resistance. We reviewed the current data concerning the role of CA IX overexpression in human malignancies, extending such information to expression of the stem-cells markers CD44 and nestin in solid cancers, to explore their relationship with the biological behavior of tumors. CA IX is heavily expressed in the advanced tumors. A positive trend of correlation between CA IX overexpression, tumor stage/grade and poor outcome emerged. Moreover, stromal CA IX expression was associated with adverse events occurrence, maybe signaling the direct action of CA IX in directing the mesenchymal changes that favor tumor invasion; in addition, membranous/cytoplasmatic co-overexpression of CA IX and stem cells markers was found in several aggressive tumors. This suggests that CA IX targeting could indirectly deplete CSCs and counteract resistance of solid cancers in the clinical setting.
    Current Medicinal Chemistry 08/2013; 21(14). DOI:10.2174/09298673113209990227 · 3.85 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: T(1;14) (p22;q32) involving BCL10 and IGH genes is a rare but recurrent chromosomal aberration in MALT-type lymphoma. It is rarely described in ocular adnexa B cell lymphomas, although nuclear BCL10 shuttling seems to be critical for disease progression in this district. We have evaluated the translocations MALT lymphoma-related in a series of 45 ocular adnexa cases, focusing in particular on their relation with BCL10 expression and its cellular topographic distribution. A prognostic tissue microarray (TMA) with ocular adnexa MALT lymphomas was designed. A study of BCL10 expression and its topographic distribution was performed through immunohistochemistry. In addition the assessment of t(14;18) (q32;q21), t(1;14) (p22;q32) and t(11;18) (q21;q21) was determined by Fluorescent In Situ Hybridization (FISH). Our series revealed t(14;18) (q32;q21) in 6/43 cases (14,3%). t(1;14) (p22;q32), never described in ocular adnexa MALT lymphomas, was observed in 3/31 (9,7%), two of which exhibited the gain of 3' upstream BCL10 gene signal (4%), whereas no case showed t(11;18) (q21;q21). Moreover, BCL10 expression was observed in 18/45 cases. In particular its nuclear expression was revealed in 12/45 cases, cytoplasmic expression in 5/45 and both cytoplasmic and nuclear expression in 1/45. Statistical analysis demonstrated that while BCL10 cytoplasmic expression is significantly related to the presence of the investigated chromosomal aberrations, in particular with t(14;18) (q32;q21), BCL10 nuclear shuttling does not show any correlation with these translocations. Our data support that BCL10 nuclear distribution is neither related to BCL10 rearrangement nor to other known translocations.
    Histology and histopathology 07/2013; 29(1). · 2.24 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Aim of this work is to provide a detailed comparison of clinical-pathologic features between well differentiated and poorly differentiated tumors according to their BRAF and RASSF1A status.We analyzed RASSF1A methylation by MSP and BRAF mutation by LCRT-PCR with LightMix® kit BRAF V600E in neoplastic thyroid tissues. Immunohistochemical evaluation of RASSF1A expression was also performed by standard automated LSAB-HRP technique.An overall higher degree of RASSF1A over-expression than normal thyroid parenchyma surrounding tumors (p<0.05) has been found in all malignant well differentiated lesions. Moreover, statistically significant higher levels of RASSF1A expression were observed in differentiated cancers associated to an inflammatory autoimmune background (p = 0.01). Amplifiable DNA for LC PCR with LightMix® kit BRAF V600E was obtained in 9 PTCs, 4 FVPTCs, 5 ATCs and 1 control. The V600E mutation was found in 13 of 18 (72%) tumors. BRAF was mutated in 6 of 9 (66%) classical PTC, in 2 of 4 (50%) follicular variant PTC and in all ACs (100%). The overall frequency of RASSF1A promoter methylation observed was 20.5% (9 cases out 44). Hypermethylation of RASSF1A in primary tumors was variable according to histotypes ranging from100% (5/5) in ACs to only 12.5% (4/32) in PTCs. We show a correlation between RASSF1A methylation status and RASSF1A protein expression. Finally, we conclude that BRAF V600E mutation and RASSF1A methylation were pathogenetic event restricted to a subgroup of PTC/FVPTCs in early stage and to clinically aggressive ATCs. J. Cell. Biochem. © 2012 Wiley Periodicals, Inc.
    Journal of Cellular Biochemistry 05/2013; 114(5). DOI:10.1002/jcb.24460 · 3.37 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Osteoporosis and avascular necrosis (AVN) are long-lasting and debilitating complications of hematopoietic stem cell transplantation (HSCT). We describe the magnitude of bone loss, AVN and impairment in osteogenic cell compartment following autologous (auto) and allogeneic (allo) HSCT, through the retrospective bone damage revaluation of 100 (50 auto- and 50 allo-HSCT) long-term survivors up to 15 years after transplant. Current treatment options for the management of these complications are also outlined. We found that auto- and allo-HSCT recipients show accelerated bone mineral loss and micro-architectural deterioration during the first years after transplant. Bone mass density (BMD) at the lumbar spine, but not at the femur neck, may improve in some patients after HSCT, suggesting more prolonged bone damage in cortical bone. Phalangeal BMD values remained low for even more years, suggesting persistent bone micro-architectural alterations after transplant. The incidence of AVN was higher in allo-HSCT recipients compared to auto-HSCT recipients. Steroid treatment length, but not its cumulative dose was associated with a higher incidence of bone loss. Allo-HSCT recipients affected by chronic graft versus host disease seem to be at greater risk of continuous bone loss and AVN development. Reduced BMD and higher incidence of AVN was partly related to a reduced regenerating capacity of the normal marrow osteogenic cell compartment. Our results suggest that all patients after auto-HSCT and allo-HSCT should be evaluated for their bone status and treated with anti-resorptive therapy as soon as abnormalities are detected.
    01/2013; 5:7-13.
  • Source
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Squamous cell carcinoma of the oral region (OSCC) is one of the most common and highly aggressive malignancies worldwide, despite the fact that significant results have been achieved during the last decades in its detection, prevention and treatment. Although many efforts have been made to define the molecular signatures that identify the clinical outcome of oral cancers, OSCC still lacks reliable prognostic molecular markers. Scientific evidence indicates that transition from normal epithelium to pre-malignancy, and finally to oral carcinoma, depends on the accumulation of genetic and epigenetic alterations in a multistep process. Unlike genetic alterations, epigenetic changes are heritable and potentially reversible. The most common examples of such changes are DNA methylation, histone modification, and small non-coding RNAs. Although several epigenetic changes have been currently linked to OSCC initiation and progression, they have been only partially characterized. Over the last decade, it has been demonstrated that especially aberrant DNA methylation plays a critical role in oral cancer. The major goal of the present paper is to review the recent literature about the epigenetic modifications contribution in early and later phases of OSCC malignant transformation; in particular we point out the current evidence of epigenetic marks as novel markers for early diagnosis and prognosis as well as potential therapeutic targets in oral cancer.
    International Journal of Molecular Sciences 12/2012; 13(2):2331-53. DOI:10.3390/ijms13022331 · 2.34 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: In this study we aimed to confirm the emerging role of Chromatin Assembly Factor 1 (CAF-1 p60) as a new proliferation and prognostic marker for cancer and to test the usefulness of the tissue microarray technique (TMA) for CAF-1 p60 rapid screening in several human malignancies. CAF-1 is a histone chaperone, regulating chromatin dynamics during DNA replication and repair in eukaryotics. TMA is a powerful high-throughput methodology in the study of cancer, allowing simultaneous assessment of different biomarkers within large numbers of tissue specimens. We generated TMA taking 3 mm diameter-core biopsies from oral squamous cell carcinoma, prostate cancer, salivary gland tumours and skin melanoma specimens, which had been previously tested for CAF-1 p60 on routine tissue sections. We also analysed, for the first time, 30 larynx and 30 skin squamous cell carcinomas. CAF-1 p60 resulted over-expressed in both the tissue sections and the TMA specimens, with the highest levels of expression in tumours which were more aggressive and metastasizing. Notably, a high degree of agreement was found between the CAF-1 p60 assessment on TMAs and on routine tissue sections. Our findings confirm the prognostic role of CAF-1 p60 and indicate TMA as a really advantageous method for CAF-1 p60 immunohistochemical screening, allowing savings on both tissue quantity and operator-time.
    International Journal of Molecular Sciences 12/2012; 13(9):11044-62. DOI:10.3390/ijms130911044 · 2.34 Impact Factor
  • Source
    Dataset: Reprint
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The aim of this study was to investigate potentialities of poly(dl-lactide-co-glycolide) (PLGA) microspheres for the delivery of small interfering RNAs (siRNAs) against tumor necrosis factor α (TNF-α) to achieve prolonged and efficient inhibition of TNF-α for the treatment of rheumatoid arthritis (RA). PLGA microspheres were prepared by a modified multiple emulsion-solvent evaporation method. The formulations were characterized in terms of morphology, mean diameter and siRNAs distribution, encapsulation efficiency, and in vitro release kinetics. The efficiency of this system was then evaluated both in vitro and in vivo using the murine monocytic cell line J774 and a pre-clinical model of RA, respectively. siRNA-encapsulating PLGA microspheres were characterized by a high encapsulation efficiency and a slow and prolonged anti-TNF-α siRNAs. Our results provide evidence that, upon intra-articular administration, PLGA microspheres slowly releasing siRNAs effectively inhibited the expression of TNF-α in arthritic joints. Our system might represent an alternative strategy for the design of novel anti-rheumatic therapies based on the use of RNA interference in RA.
    European journal of pharmaceutics and biopharmaceutics: official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V 08/2012; 82(3). DOI:10.1016/j.ejpb.2012.07.021 · 4.25 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Transfusion-related acute lung injury (TRALI) is a frequently under-diagnosed, although potentially fatal, condition that represents a leading cause of transfusion-related morbidity and mortality even in pediatric patients. Its main clinical features are characterized by rapidly evolving respiratory distress, hypoxia, pulmonary edema, and bilateral infiltrates on chest radiograph during or within 6 h of transfusion. We present a case of severe TRALI associated with myocardial stunning that occurred in a 14-year-old girl, and review the existing literature of pediatric TRALI. Our report suggests a potential role for NIV in the management of TRALI as the best profile both in terms of safety and effectiveness for hematologic patients.
    International journal of hematology 08/2012; 96(3):390-4. DOI:10.1007/s12185-012-1126-6 · 1.68 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: The aim of this study was to evaluate the incidence of lymph node metastases in patients with atypical Spitz nevi (ASN) after sentinel lymph node biopsy (SLNB) and during follow-up, and to assess the diagnostic value of the surgical procedure. At the National Cancer Institute of Naples, Italy, 40 patients with ASN underwent SLNB between 2003 and 2011. Medical records were reviewed and all slides of the primary tumours were retrieved, rendered separately, and assessed by four experienced dermatopathologists from two different academic institutions. Each member of the review panel assessed slides separately without recourse to medical notes and blinded to each others' diagnosis. All patients were treated with wide local excision and SLN biopsy according to the standard procedure. All cases were followed up to assess outcomes. The original diagnosis of ASN was confirmed in all 40 cases. No sentinel node positivity was recorded, and no patients developed nodal involvement during a median follow-up of 46 months (range 16-103). All patients were alive and without evidence of locoregional or distant relapse at time of review. In our experience, ASN were not associated with metastatic potential. Surgical staging procedures are not justified and careful clinical surveillance is adequate.
    European journal of surgical oncology: the journal of the European Society of Surgical Oncology and the British Association of Surgical Oncology 06/2012; 38(10):932-5. DOI:10.1016/j.ejso.2012.05.010 · 2.89 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Aims The natural history of oral squamous cell carcinomas (OSCCs) is variable and difficult to predict. This study aimed to assess the value of the expression of poly(ADP-ribose) polymerase 1 (PARP-1), chromatin assembly factor-1 (CAF-1)/p60 and the stem cell markers CD133, CD166, CD44, CD44v6 and nestin as markers of outcome and progression-free survival in OSCC patients. Methods Clinical data were collected from 66 patients (41 male and 25 female, aged 29–92 years) who underwent surgery for OSCC of the tongue, floor, lips, and palate. During follow-up (range: 12–131 months), 14 patients experienced relapse/metastasis and/or death. The study was performed by immunohistochemistry on paraffin-embedded tumour tissues, western blot analysis of tumour protein lysates and human cell lines, and RNA silencing assays. In addition, the human papillomavirus (HPV) status of primary tumours was evaluated by immunohistochemistry and viral subtyping. Univariate and multivariate analyses were performed to determine the correlation between these parameters and the clinical and pathological variables of the study population. Results and conclusions We found that a PARP-1high/CAF-1 p60high/nestinhigh phenotype characterized the OSCCs with the worst prognosis (all HPV-negative). This may be of benefit in clinical management, since radio-enhancing anti-PARP-1 and/or anti-CAF-1/p60 agents may allow radioresistance to be bypassed in the nestin-overexpressing, metastasizing OSCC cells.
    Histopathology 04/2012; 61(6). DOI:10.1111/j.1365-2559.2012.04313.x · 3.30 Impact Factor

Publication Stats

6k Citations
1,023.54 Total Impact Points


  • 1987–2015
    • University of Naples Federico II
      • • Section of Psychology
      • • Department of Advanced Biomedical Sciences
      • • Department of Pharmacy
      • • Department of Molecular Medicine and Medical Biotechnology
      Napoli, Campania, Italy
  • 2005–2012
    • Columbus-Gemelli University Hospital
      Roma, Latium, Italy
  • 1991–2012
    • Catholic University of the Sacred Heart
      • • School of Pediatrics
      • • School of Obstetrics and Gynecology
      Milano, Lombardy, Italy
    • Naples Eastern University
      Napoli, Campania, Italy
  • 2010
    • CRO Centro di Riferimento Oncologico di Aviano
      Aviano, Friuli Venezia Giulia, Italy
  • 1990–2009
    • The Catholic University of America
      Washington, Washington, D.C., United States
  • 2006
    • Sacred Heart University
      Феърфилд, Connecticut, United States
  • 2004
    • I.R.C.C.S. Policlinico San Donato
      Milano, Lombardy, Italy
    • INFN - Istituto Nazionale di Fisica Nucleare
      Frascati, Latium, Italy
  • 1988–2003
    • Second University of Naples
      • • Dipartimento di Biochimica, Biofisica e Patologia Generale
      • • Faculty of Medicine and Surgery
      Caserta, Campania, Italy
  • 2002
    • Université Paris-Sud 11
      • Faculty of Pharmaceutical Sciences
      Lutetia Parisorum, Île-de-France, France
    • Azienda Ospedaliera G. Rummo
      Benevento, Campania, Italy
  • 1999
    • Cardarelli Hospital
      Napoli, Campania, Italy
  • 1997–1999
    • Policlinico Federico II di Napoli
      Napoli, Campania, Italy
  • 1988–1997
    • Università degli Studi di Napoli L'Orientale
      Napoli, Campania, Italy