1,075 research outputs found
Prognostic factors affecting the survival of patients with multiple myeloma A retrospective analysis of 86 patients
A retrospective analysis of data concerning 86 patients with multiple myeloma was carried out in order to evaluate factors affecting survival. The overall median survival was 621 days. In a univariate analysis the follOWing factors were significantly associated with poor survival: serum creatinine ≥ 150 mmol/l, haemoglobin < 11 g/dl and serum calcium values> 2,75 mmol/l; and Eastern Cooperative Oncology Group performance status 3 - 4. However, age, sex, Durie and Salmon staging, lytic lesions, serum immunoglobulin concentration, urine Bence Jones protein, percentage of plasma cells in the bone marrow, proteinuria, and type of chemotherapy given were not significantly associated with survival. A strong prediction of survival was found by grouping the serum creatinine and haemoglobin levels of patients at presentation
Chromomycin a 3 (toyomycin)and radiotherapy in the treatment of advanced malignancy
No Abstract
Treatment with 5-Fluorouracil and Celecoxib Displays Synergistic Regression of Ultraviolet Light B-Induced Skin Tumors
Standard chemotherapeutic agents used for the treatment of pre-cancerous skin lesions and non-melanoma skin cancers are not completely effective. Several studies have suggested that repeated inflammatory sunburn reactions, which include the induction of cyclooxygenase-2 (COX-2) and the subsequent production of prostaglandins, play a role in skin cancer development. COX-2 inhibition has been demonstrated to be a potent means of preventing skin cancer development in mice; however, COX-2 inhibitors alone are not effective as chemotherapeutic agents. Data in a variety of cancer types suggest greater efficacy in treating tumors with combination chemotherapies. Therefore, we hypothesized that a combination of the chemotherapeutic agent 5-fluorouracil (5-FU) and the COX-2 inhibitor and anti-inflammatory drug celecoxib would act synergistically to regress tumors in a murine model of ultraviolet light B- (UVB-) induced carcinogenesis. We found that topical treatment with 5-FU and celecoxib together was up to 70% more effective in reducing the number of UVB-induced skin tumors than 5-FU treatment alone. Our data suggest that more effective chemotherapy regimens can be developed to treat the millions of pre-cancerous and cancerous skin lesions that arise every year, which could ultimately lead to a significant reduction in costs and cosmetic defects (scarring) associated with surgical interventions
Runt-related transcription factor 3 reverses epithelial-mesenchymal transition in hepatocellular carcinoma
Loss or decreased expression of runt-related transcription factor 3 (RUNX3), a tumor suppressor gene involved in gastric and other cancers, has been frequently observed in hepatocellular carcinoma (HCC). The objective of this study was to identify the regulatory mechanism of the epithelialmesenchymal transition (EMT) by RUNX3 in HCC. Human HCC cell lines, Hep3B, Huh7, HLF and SK-Hep1, were divided into low- and high-EMT lines, based on their expression of TWIST1 and SNAI2, and were used in this in vitro study. Ectopic RUNX3 expression had an anti-EMT effect in low-EMT HCC cell lines characterized by increased E-cadherin expression and decreased N-cadherin and vimentin expression. RUNX3 expression has previously been reported to reduce jagged-1 (JAG1) expression; therefore, JAG1 ligand peptide was used to reinduce EMT in RUNX3-expressing low-EMT HCC cells. Immunohistochemical analyses were performed for RUNX3, E-cadherin, N-cadherin and TWIST1 in 33 human HCC tissues, also divided into low- and high-EMT HCC, based on TWIST1 expression. E-cadherin expression was correlated positively and N-cadherin expression was correlated negatively with RUNX3 expression in low-EMT HCC tissues. Correlations between EMT markers and RUNX3 mRNA expression were analyzed using Oncomine datasets. Similarly, mRNA expression of E-cadherin was also significantly correlated with that of RUNX3 in low-EMT HCC, while mRNA expression of JAG1 was negatively correlated with that of RUNX3. These results suggest a novel mechanism by which loss or decreased expression of RUNX3 induces EMT via induction of JAG1 expression in low-EMT HCC
Metastatic breast cancer - age has a significant effect on survival
The data on 217 elderly (aged ≥ 65 years) and 209 middleaged postmenopausal patients with metastatic breast cancer treated in the Department of Medical Oncology, University of Pretoria, from 1976 to 1985 were analysed to determine the effect of age on survival. When considered as a group, the elderly have a more favourable prognosis (median survival 20,3 months) than the middle-aged (median survival 15,54 months) (p= 0,0457). Multivariate age subset analysis (taking into account all other major prognostic factors) reveal a distinct bimodal pattern. The median survival of patients aged 45 - 54 years is 21,2 months and decreases to 16,2 months for patients aged 55 - 64 years (P= 0,08; Cox model). The median survival improves again to 24,6 months for patients aged 64 - 74 years (P= 0,0001; Cox model), followed by an apparent but non-significant decrease to 17,1 months in the very old (aged 75 - 84 years) (P = 0,52; Cox model). The more favourable prognosis in the elderly dictates effective non-toxic treatment
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