نتایج جستجو برای: tumor stages
تعداد نتایج: 602864 فیلتر نتایج به سال:
Background & Objective: Since colorectal cancer does not often have phenotypic symptoms in the early stages, the study of biomarkers for the diagnosis and prognosis of the tumor is very important. MicroRNAs are one of the most important biomarkers which attract the attention of many researchers due to a variety of reasons, including their non-invasive nature; these molecules are a group of non-...
The tumor microenvironment is a critical modulator of carcinogenesis; however, in many tumor types, the influence of the stroma during preneoplastic stages is unknown. Here we explored the relationship between pre-tumor cells and their surrounding stroma in malignant progression of the cerebellar tumor medulloblastoma (MB). We show that activation of the vascular regulatory signalling axis medi...
BACKGROUND The aim of the current study was to determine mast cell infiltration in malignant melanoma by immunohistochemistry method and its relationship with some of the cancer prognostic factors, including age, sex, and depth of the tumor. MATERIALS AND METHODS In this retrospective analytic cross-sectional study, paraffin-embedded tissue blocks of patients with cutaneous malignant melanoma...
intra-operative management of thyroid gland in laryngeal cancer is controversial. to determine the rate of thyroid involvement in patients with laryngeal cancer treated by radical surgical excision, we reviewed the records during 1996-2000 in imam khomeini hospital, cancer institute, and amir alam hospital.we studied several factors such as age, gender, and tumor location, presence of thyroid i...
objective(s) p53 is an important tumor suppressor, which is mutated in later stages of many cancers and leads to resistance to chemotherapy. the aim of this study was to reveal mutations of tp53 in colorectal cancer in kerman province. materials and methods a total of forty-three colon cancer specimens as paraffin block or fresh tissues, which passed stage iiia, were selected. three exons 5, 7 ...
Background: Ovarian sex cord-stromal tumors (SCST) account for rare ovarian malignancy. These tumors are 5-8% of all ovarian neoplasms. The most common type of sex cord ovarian tumors is granulosa cell tumor (GCT). In this study our purpose was to have a look at some of clinicopathologic aspects and treatment results of these tumors. Methods: In a retrospective study, all documents of patients ...
Background & Aims: KAI1 is a tumor suppressor gene and inhibitor of metastasis in a wide range of malignancies. While it is ubiquitously expressed in normal tissues, KAI1 expression is down regulated in tumors. The present research proposal aims semi quantitative evaluation of KAI1 mRNA expression in Iranian patients with Squamous Cell Carcinoma of Esophagus(SCCE) on finding a correlation betw...
background : alternative splicing of the fas transcript can produce a natural secreted isoform of this molecule. some cancer cells can also produce soluble fas (sfas) which may have suppressive effects on the immune system's anti-tumor response. elevated concentrations of sfas have been detected in the sera of patients with different malignancies. materials and methods : the concentrations of s...
Received: May 31, 2017 Revised: August 08, 2017 Accepted: August 18, 2017 Abstract: Background: Transforming growth factor-beta1 (TGF-β1) is a pleiotropic cytokine with a double role in cancer through its capacity to inhibit early stages of tumors while enhancing tumor progression at late stages of tumor progression. Moreover, TGF-β1 is a potent immunosuppressive cytokine within the tumor micro...
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