Cyclin D1 has been observed in many human tumors and is likely to promote cell proliferation and differentiation by shortening the G1/S transition. This work was aimed to evaluate the prognostic role of Cyclin D1 in invasive ductal carcinoma (IDC) and its correlation with other established prognostic parameters of breast cancer. This study was conducted on 40 prospective biopsies taken from patients with breast tumor; 30 cases having IDC and 10 cases with benign tumor as well as 10 normal biopsies. Sections from all cases were subjected to stain with haematoxylin and eosin (H&E) for histopathological examination and immunohistochemical technique for Cyclin D1 in addition using flow cytometric technique to perform cell cycle analysis. Histopathological results showed fibroadenoma and fibrocystic disease in benign cases and IDC with 60% grade II and 40% grade III in malignant cases. Immunohistochemical results revealed higher expression of Cyclin D1 in IDC comparing to normal and benign breast tissues. Statistically there was significant correlation between Cyclin D1 scores and the positivity of estrogen receptor (ER) and progesterone receptor (PR), and no significant correlation was seen between Cyclin D1 and S-phase %. It could be suggested that Cyclin D1 protein may be a valuable prognostic marker in IDC and can be targeted in the future therapeutic approaches.
The present study compared concentration camp survivors and controls from the same ethnic and religious background on two variables: guilt feelings in everyday life and locus of control. No significant differences were found between survivors and controls. As for sex differences, it was found that women expressed significantly more guilt than men in "behaviors contrary to moral or ethical principles" and men were significantly more internal than women. The implications of these findings were discussed.
Introduction: Cyclosporin-A-has been used as an immunosuppressant to prevent the rejection of organ transplants. However, alveolar bone loss is an important negative side-effect of this drug. Simvastatin, a hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor, is known to inhibit cholesterol biosynthesis. It has advanced effects on bone formation in vivo and in vitro. So, we evaluated the expression of BMP 2 after administration of simvastatin in cyclosporin-A-associated alveolar bone loss in rats. Objective: To evaluate the effect of simvastatin and cyclosporin-A-on Alveolar bone by investigating the expression of Bone Morphogenetic Protein-2 (BMP-2) using Immunohistochemical and Image analysis investigation methods. Materials and methods: 24 adult male albino rats were divided into 3 groups: Group I: control group; 4 rats, Group II: cyclosporine-A-group; 10 rats (10 mg/kg) daily subcutaneous injection, Group III: Cyclosporin-A /Simvastatin group; 10 rats, simvastatin was taken orally daily (20mg/kg/day). Two rats from the control group and 5 rats from each of the studied experimental groups (group II & III) were sacrificed on days 15 and 30 consecutively, and examined using Immunohistochemical method, and Image analysis. Results: Immunohistochemical results revealed strong expression of BMP 2 in osteoblasts, osteocytes after simvastatin administration and weak expression in CsA. The same results were statistically significant in Immunohistochemical Optical Density (IOD) results. Histomorphometrical analysis of bone volume showed a significant increase in bone volume in simvastatin group than CsA group, and significant decrease in CsA than control. Conclusion: we can conclude that Simvastatin counteract the adverse effect of CsA induced alveolar bone loss by induction of BMP 2 in osteoblasts and osteocytes that induced new bone formation.
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