Search results for " Squamous cell carcinoma"

Predicting death in patients with mutated TP53 head and neck squamous cell carcinoma

2020

Carboplatin in combination with raltitrexed in recurrent and metastatic head and neck squamous cell carcinoma: A multicentre phase II study of the Gr…

2005

ackground: The combination of cisplatin (CDDP) and 5-Fluorouracil (5-FU) is a standard regimen for the treatment of recurrent and metastatic head and neck squamous cell carcinoma (HNSCC). This combination shows a relevant toxicity and new chemotherapy associations with a more favourable toxicity profile are awaited. Carboplatin (CB) is a platinum derivative with less toxicity than CDDP. Raltitrexed (R) is a potent and specific thymidylate synthase inhibitor with activity comparable to that of 5-FU in colorectal cancer; moreover, it showed activity as a single agent in HNSCC. Materials and Methods: Since 2001, a multicentre, phase II trial has been underway to evaluate the efficacy and toxic…

ANP differentiates between primary Submandibular Gland Squamous Cell Carcinoma and Oral Squamous Cell Carcinoma: Preliminary data

2021

The natriuretic peptide system consists of three ligands, Atrial Natriuretic Peptide (ANP), Brain Natriuretic peptide (BNP) and C-type Natriuretic peptide (CNP), and three natriuretic peptide receptors (NPR’s), NPRA, NPRB and NPRC. We investigated the expression levels of NPPA (encoding ANP) and NPR1 (encoding NPRA, the main receptor for ANP) in primary benign (pleomorphic adenoma) and malignant (squamous cell carcinoma, SCC) submandibular salivary gland (SMG) tumors, as well as in primary oral squamous cell carcinoma (OSCC). We found that the NPPA and NPR1 expression levels were significantly different in SMG SCC versus OSCC, exhibiting a significant increase in NPPA and absence of NPR1 ex…

TGF-β/VEGF-A Genetic Variants Interplay in Genetic Susceptibility to Non-Melanocytic Skin Cancer

2022

Differential genetically determined expression of transforming growth factor-β (TGF-β pathway and of vascular endothelial growth factor-A (VEGF-A) might modulate the molecular “milieu” involved in the etio-pathogenesis of non-melanoma skin cancer (NMSC). We have evaluated the frequency of some functionally relevant SNPs of TGF-β and VEGF-A genes in 70 NMSC patients and 161 healthy controls, typed for TGF-β1 rs1800471, TGF-β2 rs900, TGF-βR1 rs334348 and rs334349, TGF-βR2 rs4522809 and VEGF-A rs3025039 SNPs. TGF-βR2 rs1800629G allele and related genotypes were found to be associated with a possible protective role against NMSC, whereas VEGF-…

Evidence of field cancerization of oral squamous cell carcinoma: a case report

2014

Objectives. From 1953 (1) the term “field cancerization” has been used to describe an “increased risk of cancer de- velopment in the entire upper aerodigestive tract due to multiple genetic abnormalities in the whole region after pro- longed exposure to carcinogen” (2). This phenomenon implies the occurrence of multiple primary tumors/potentially malignant disorders as results of cell-molecular aberrations in different independent sites (polyclonal theory) or from the same site through widespread expansion or later spread across the mucosa (monoclonal theory). Case report. A 63-year-old female patient referred in June of 2014 for exophytic/ulcerative lesion in the hard palate. At the same t…

Bioinformatics analysis of TP53 gene in head and neck squamous cell carcinoma patients from the cancer genome atlas

2019

Efficacy of stem cells in bone rehabilitation in patients with alveolar bone atrophy: a systematic review

2023

Background: Biomedical engineering proposes the use of stem cells as a bone rehabilitation treatment in patients with alveolar bone defects. Many authors suggest that this innovative technique could represent the future of bone regeneration in dentistry. The present study systematically reviewed the efficacy of stem cells in bone regeneration in patients with alveolar bone atrophy. Material and methods: The study was developed following the criteria of the PRISMA guideline (2020). The literature review was conducted in Pubmed, Medline Complete, and Scopus. The search algorithms used the following key words: stem cells, bone regeneration, and alveolar ridge augmentation. To assess the risk o…

MMP-10/stromelysin-2 promotes invasion of head and neck cancer.

2011

BackgroundPeriostin, IFN-induced transmembrane protein 1 (IFITM1) and Wingless-type MMTV integration site family, member 5B (Wnt-5b) were previously identified as the invasion promoted genes of head and neck squamous cell carcinoma (HNSCC) by comparing the gene expression profiles between parent and a highly invasive clone. We have previously reported that Periostin and IFITM1 promoted the invasion of HNSCC cells. Here we demonstrated that Wnt-5b overexpression promoted the invasion of HNSCC cells. Moreover, stromelysin-2 (matrix metalloproteinase-10; MMP-10) was identified as a common up-regulated gene among Periostin, IFITM1 and Wnt-5b overexpressing HNSCC cells by using microarray data s…

The hypoxia-inducible factor-responsive proteins semaphorin 4D and vascular endothelial growth factor promote tumor growth and angiogenesis in oral s…

2012

Growth and metastasis of solid tumors requires induction of angiogenesis to ensure the delivery of oxygen, nutrients and growth factors to rapidly dividing transformed cells. Through either mutations, hypoxia generated by cytoreductive therapies, or when a malignancy outgrows its blood supply, tumor cells undergo a change from an avascular to a neovascular phenotype, a transition mediated by the hypoxia-inducible factor (HIF) family of transcriptional regulators. Vascular endothelial growth factor (VEGF) is one example of a gene whose transcription is stimulated by HIF. VEGF plays a crucial role in promoting tumor growth and survival by stimulating new blood vessel growth in response to suc…

Mucocutaneous Leishmaniasis Mimicking Squamous Cell Carcinoma

2019

Leishmaniasis is a parasitic infectious disease caused by protozoan species belonging to the [...]