Abstract:
:The mechanism of action of the pure antiestrogens ICI 164384 and ICI 182780 has been investigated. Both antagonists are steroidal antiestrogens with 7 alpha-alkylamide side-chains. The antiestrogens reduce the cellular content of the estrogen receptor by reducing the half-life of the protein. A potential mechanism for this effect is suggested by the observation that the DNA binding activity of receptors which have been over-expressed in cells was inhibited in vitro. The inhibitory activity of analogues of ICI 164384 with different side chain lengths correlates with their ability to function as pure antiestrogens in vivo. Since the estrogen binding site overlaps with residues involved in dimerisation, the antiestrogens are likely to bind to a similar site and may therefore with receptor dimerisation in the hormone binding domain by means of the 7 alpha side-chain. We propose that the increased turnover of the receptor in the presence of ICI 164384 and ICI 182380 is a consequence of impaired dimerisation of the proteins.
journal_name
Breast Cancer Res Treatjournal_title
Breast cancer research and treatmentauthors
Parker MGdoi
10.1007/BF00689686subject
Has Abstractpub_date
1993-01-01 00:00:00pages
131-7issue
2eissn
0167-6806issn
1573-7217journal_volume
26pub_type
杂志文章abstract::Women with reduced CYP2D6 activity have low endoxifen concentrations and likely worse long term benefits from tamoxifen. We investigated the association between CYP2D6 genotype and tamoxifen-induced hot flashes in a prospective cohort. We collected hot flash frequency and severity data over 12 months from 297 women in...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1007/s10549-009-0309-1
更新日期:2009-10-01 00:00:00
abstract::Although breast cancer familial aggregation has been studied in Caucasians, information for African-Americans is scant. We used family cancer history from the Women's Contraceptive and Reproductive Experiences study to assess the aggregation of breast and gynecological cancers in African-American and Caucasian familie...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-004-2046-9
更新日期:2005-02-01 00:00:00
abstract::The present study consists of 1,238 women with unilateral breast cancer treated with modified radical mastectomy living in the geographic area of Haukeland Hospital. Their weight and height had been measured years before presentation of the disease. Age-adjusted Quetelet's index (weight/height2) showed that obese wome...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01807157
更新日期:1996-01-01 00:00:00
abstract:BACKGROUND:The genes mutated in the cancer-prone syndrome, xeroderma pigmentosum (XP genes), have been well studied both biochemically and mechanistically. These genes are important components of the DNA nucleotide excision repair (NER) pathway, which protects against environmentally-induced cancers. XP genes are also ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-006-9263-3
更新日期:2007-01-01 00:00:00
abstract::The aim of this study was to evaluate the effectiveness of an additional, individualized, multi-component complementary medicine treatment offered to breast cancer patients at the Merano Hospital (South Tyrol) on health-related quality of life compared to patients receiving usual care only. A randomized pragmatic tria...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s10549-014-3249-3
更新日期:2015-01-01 00:00:00
abstract::Since our previous findings had indicated that the androgenic steroid medroxyprogesterone acetate (MPA) exerts potent inhibitory effects on 7,12-dimethylbenz(a)anthracene (DMBA)-induced tumor growth, we have studied the effect of low doses of MPA released from Depo-Provera and from 50:50 poly[DL-lactide-co-glycolide] ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01961245
更新日期:1992-01-01 00:00:00
abstract::This retrospective study investigates the correlation of intra-individual HER2 status between primary breast cancers and corresponding recurrences in a population derived cohort. The REMARK criteria were used as reference. In 151 breast cancer patients, primary tumors were analyzed for HER2 status on histopathology se...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-010-1029-2
更新日期:2011-01-01 00:00:00
abstract:PURPOSE:The Ki67 proliferation index is a prognostic and predictive marker in breast cancer. Manual scoring is prone to inter- and intra-observer variability. The aims of this study were to clinically validate digital image analysis (DIA) of Ki67 using virtual dual staining (VDS) on whole tissue sections and to assess ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-018-4669-2
更新日期:2018-05-01 00:00:00
abstract:PURPOSE:To evaluate a simplified method of pre-test information and germline BRCA1/2 mutation testing. METHODS:In a prospective, single-arm study, comprehensive BRCA1/2 testing was offered to unselected patients with newly diagnosed breast cancer at three hospitals in south Sweden (BRCAsearch, ClinicalTrials.gov Ident...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1007/s10549-017-4584-y
更新日期:2018-02-01 00:00:00
abstract:PURPOSE:To evaluate the association between levonorgestrel-releasing intrauterine system (LNG-IUS) use and breast cancer (BC) risk. METHODS:A cohort of all Maccabi Healthcare Services (MHS) female members aged 40-50 years between 1/2003 and 12/2013 was used to identify LNG-IUS users as "cases," and 2 age-matched non-u...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-017-4491-2
更新日期:2018-01-01 00:00:00
abstract::To evaluate the prognostic relevance of Ki-67 and topoisomerase IIalpha expression in relation to tumor stage, grade, and hormone receptor content, 942 ductal infiltrating carcinomas of the breast were examined by means of the monoclonal antibodies Ki-S11 (Ki-67) and Ki-S4 (topoisomerase IIalpha). pS2, c-erbB2, and p5...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1006159016703
更新日期:1999-05-01 00:00:00
abstract::Breast cancer is a heterogeneous entity composed of distinct molecular subgroups with different molecular and clinical features. We analyzed the association between molecular breast cancer subgroups, age at diagnosis, and prognosis in a compilation of publicly available gene expression datasets. Affymetrix gene expres...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-015-3491-3
更新日期:2015-08-01 00:00:00
abstract:PURPOSE:The independent predictive information from progesterone receptor (PgR) positivity for breast cancer treated with tamoxifen has been questioned after an overview by the Early Breast Cancer Trialists' Collaborative Group (EBCTCG). However, the studies in the overview were to a large content performed before mode...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-016-4007-5
更新日期:2016-11-01 00:00:00
abstract:PURPOSE:To examine the outcomes of endocrine naive patients treated with tamoxifen as initial endocrine therapy for metastatic breast cancer. Data were obtained from the long-term follow-up of two previously published randomized trials. PATIENTS AND METHODS:All patients received tamoxifen 20 mg po in a single daily do...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1023/a:1005758127114
更新日期:1997-02-01 00:00:00
abstract::We compared levels of erbB-2 oncoprotein among three groups: Group I included 60 asymptomatic women; Group II had 51 women with benign breast biopsies; and Group III had 67 women with node-negative breast cancer. Serological levels of erbB-2 protein were measured in all participants; tumor levels were measured for Gro...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1006033214721
更新日期:1998-06-01 00:00:00
abstract::Uncontrolled proliferation is one of the hallmarks of breast cancer. We have previously identified the human Ecd protein (human ortholog of Drosophila Ecdysoneless, hereafter called Ecd) as a novel promoter of mammalian cell cycle progression, a function related to its ability to remove the repressive effects of Rb-fa...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1946-8
更新日期:2012-07-01 00:00:00
abstract::Mammography and ultrasound are often used concurrently for patients with palpable breast masses. While mammography has a false-negative rate of approximately 15 %, the addition of breast ultrasound decreases this rate among patients with palpable breast masses. There are no recent outcome data regarding the use of com...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-015-3557-2
更新日期:2015-10-01 00:00:00
abstract::Aromatase inhibitors (AIs) are used for treatment of estrogen receptor α (ER)-positive breast cancer; however, resistance is a major obstacle for optimal outcome. This preclinical study aimed at identifying potential new treatment targets in AI-resistant breast cancer cells. Parental MCF-7 breast cancer cells and four...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-015-3284-8
更新日期:2015-02-01 00:00:00
abstract::The Rho family of GTPases has been intensively studied for their roles in signal transduction processes leading to cytoskeletal-dependent responses, including cell migration and phagocytosis. In addition, they are important regulators of cell cycle progression and affect the expression of a number of genes, including ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1023/B:BREA.0000018423.47497.c6
更新日期:2004-03-01 00:00:00
abstract::In 1973, McGuire and Chamness (In: O'Malley BW and Means AR (ed) Receptors for Reproductive Hormones, Plenum Press) summarized their work on the estrogen receptor in animal and human breast tumors, and in so doing described a target for therapeutic intervention. At that time there were no clinically useful antiestroge...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/BF00713399
更新日期:1995-01-01 00:00:00
abstract::Mammographic density is strongly associated with breast cancer risk. Inflammation is involved in breast carcinogenesis, perhaps through effects on mammographic density. We evaluated associations between inflammatory markers interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and C-reactive protein (CRP) and mammogr...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-010-1249-5
更新日期:2011-06-01 00:00:00
abstract::Multiple adjuvant regimens are used for HER2+ breast cancer, but experience in routine practice is not reported. We evaluated whether oncologists' perceptions of these regimens matches clinical experience. We surveyed Wisconsin medical oncologists throughout the state regarding factors impacting selection of TCH (doce...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1862-y
更新日期:2012-01-01 00:00:00
abstract::Recent breast cancer treatment studies conducted in large urban settings have reported racial disparities in the appropriate use of adjuvant chemotherapy. This article presents the first focused evaluation of black-white differences in receipt and completion of chemotherapy for breast cancer in a primarily rural regio...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1916-1
更新日期:2012-05-01 00:00:00
abstract:BACKGROUND:TOP2A gene encodes topoisomerase II alpha, the direct molecular target of anthracyclines. This gene is frequently coamplified with HER2. The aims of this study were to analyse the pattern of TOP2A amplification and protein expression in relation to the molecular subgroups of breast cancers; and to define the...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-006-9492-5
更新日期:2007-12-01 00:00:00
abstract::Metastasizing cancer cells can invade the extracellular matrix using plasma membrane protrusions, termed invadopodia, that contact and dissolve the matrix. Various membrane associated proteases localized on the invadopodial membranes are responsible for the extracellular matrix degradation. Work from our laboratory sh...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/BF00666155
更新日期:1994-01-01 00:00:00
abstract:PURPOSE:We evaluated the prognostic value of lymphoscintigraphy after complex decongestive therapy (CDT) in breast cancer-related secondary lymphedema. METHODS:Prior to CDT, 80 patients with breast cancer-related lymphedema underwent a 99mTc tin-colloid lymphoscintigram. We investigated the uptake patterns of axillary...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-018-5041-2
更新日期:2019-02-01 00:00:00
abstract::Previously we have shown that exercising rats prior to administration of 50 mg NMU/kg (high dose) significantly decreased tumor multiplicity, but not incidence or latency. We hypothesized that the dose of NMU saturated the system such that the exercise intervention was overshadowed. Therefore, the purpose of this inve...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1005838721890
更新日期:1998-01-01 00:00:00
abstract:PURPOSE:Eribulin methylate (eribulin) improved the overall survival (OS) of HER2-negative advanced breast cancer (HER2-ABC) patients; however, the mechanism underlying the OS improvement has not been clarified. Several reports suggest that eribulin promotes antitumor immunity via tumor micro-environment conditioning. R...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章
doi:10.1007/s10549-020-05626-1
更新日期:2020-05-01 00:00:00
abstract:PURPOSE:To examine the association between breast cancer risk factors and second primary cancers (independent diagnoses occurring at least 12 months after the initial breast cancer diagnosis) among breast cancer survivors. METHODS:In this population-based study, cancer outcomes among breast cancer survivors first diag...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-006-9446-y
更新日期:2007-10-01 00:00:00
abstract::Familial aggregations of breast/ovarian cancer cases frequently depend on BRCA1/2 pathogenic mutations. Here we counselled 120 Italian breast/ovarian cancer families and selected 73 probands for BRCA1/2 mutation screening. Through this analysis we defined the prevalence of BRCA1/2 pathogenic mutations occurring in Ita...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-006-9225-9
更新日期:2006-11-01 00:00:00