Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:2.7.10.1 (ERK)
 95,504 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Intratumoral levels of E1 (oestrone), E1S (oestrone sulphate) and E2 (oestradiol) are significantly reduced by treatment with the aromatase inhibitor anastrozole regardless of treatment response. The purpose of the present pilot study was to look for additional markers of biochemical response to aromatase inhibitors on mRNA expression level. Whole genome expression was studied using microarray analysis of breast cancer tissue from 12 patients with locally advanced tumors, both before and following 15 weeks of treatment with the aromatase inhibitor anastrozole (Arimidex). Intratumoral mRNA levels for a subset of genes coding for steroid metabolizing enzymes, hormone receptors and some growth mediators involved in cell cycle control were analysed by quantitative RT-PCR. There was a correlation between the two methods for some but not all genes. The mRNA expression levels of the different genes were correlated to each other and to the intratumoral levels of E1, E2 and E1S, before and after the treatment. Notably, a correlation of the E1/E2 metabolic ratio to the mRNA levels of CYP19A1 was observed before treatment (r=0.745, p<0.005). Whole genome expression analysis of these 12 breast cancer patients revealed similar tumor classification to previously published larger studies. Tumors with no or low expression of ESR1 (oestrogen receptor) clustered together and were characterized by a strong basal-like signature highly expressing keratins 5/17, cadherin 3, frizzled and apolipoprotein D, among others. The luminal epithelial tumor cluster, on the other hand, highly expressed ESR1, GATA binding protein 3 and N-acetyl transferase. An evident ERBB2 cluster was observed due to the marked over-expression of the ERBB2 gene and GRB7 and PPARBP in this patient material). Using significance analysis of microarrays (SAM), we identified 298 genes significantly differently expressed between the partial response and progressive disease groups.
 ...
PMID:Effects of anastrozole on the intratumoral gene expression in locally advanced breast cancer. 1602 38

A case is 61 years old woman. In February 2008, she was aware of swelling, skin redness and edema in her left breast and visited our hospital. We diagnosed it as inflammatory breast cancer with positive hormone receptor (ER+, PgR+) and unexpression of HER2 (HercepTest 1 +). We started preoperative chemotherapy with weekly paclitaxel followed by FEC100, but we canceled chemotherapy because she developed cerebral infarction when we administered paclitaxel twice. Then, hormonotherapy using anastrozole (Arimidex) was therefore attempted. Three months later, treatment with anastrozole alone reduced the swelling, skin redness and edema in her left breast. After eight months of administration, the breast swelling, skin redness and edema were completely disappeared. MRI revealed the disappearance of the enhanced area. Then mastectomy with auxiliary dissection was performed.
 ...
PMID:[A case of inflammatory breast cancer responding to anastrozole]. 2003 61