Abstract：
:The antiestrogen tamoxifen (TAM) has been successfully used to treat breast cancer expressing estrogen and progesterone receptors (ER+ and PR+). However, the development of antiestrogen resistance is frequently observed in patients following long-term treatment. To better understand the mechanism of action of TAM and its main metabolites: N-desmethyltamoxifen (N-des-TAM) and 4-hydroxytamoxifen (4-OH-TAM), their growth inhibitory effect was studied in 5 breast cancer cell lines characterized by different estrogen receptor levels: MDA-MB 231 (ER-), MCF-7 R (ER-), T47D (ER+), ZR-75/1 (ER+) and MCF-7 (ER+) trying to reproduce a cellular heterogeneity encountered in human breast tumors. In this study, the effects of TAM, N-des-TAM and 40-H-TAM on the cell growth were tested at concentrations ranging from 10(-8) to 10(-6)M with or without estradiol (10(-8)M). Only 4-OH-TAM showed a clear antiestrogen dose-dependent effect. Moreover, the finding of an antiproliferative activity at the highest dose (10(-6)M) for TAM, 4-OH-TAM and N-des-TAM in the ER- and PR- cell line MDA-MB 231 supports the hypothesis that TAM could be effective on ER+ as well as ER- tumors by an ER-independent mechanism. Despite ER+ and PR+ status after 2, 4 and 6 days of treatment, the T47D cell line displayed an increased growth rate with N-des-TAM at 10(-6)M. It should be noted that such concentration is within the range of the plasma level of N-des-TAM (10(-6)M) in patients receiving TAM per os (40 mg/day). These results and the well-known cell heterogeneity of human breast tumors may significantly account for some failure of antiestrogen treatment.
journal_name
Bull Cancerjournal_title
Bulletin du cancerauthors
Bachmann-Moisson N,Barberi-Heyob M,Merlin JL,Ledrich ML,Batt AM,Guillemin Fsubject
Has Abstractpub_date
1996-10-01 00:00:00pages
808-15issue
10eissn
0007-4551issn
1769-6917journal_volume
83pub_type
杂志文章,评审abstract：:296 intraoral minor salivary gland tumors were observed among 702 salivary tumors. The study emphasizes a frequent palatine location, observed in more than 50 per cent of theses tumors. Pleiomorphic adenomas (or so called mixed tumors), are frequently encountered; but it is noteworthy that the proportion of muco-epide...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：
更新日期：1980-01-01 00:00:00
abstract：:The anticancer drug technical commission (COTECH) of the Auvergne OMEDIT has set up a region-wide professional practice evaluation (PPE) with regards to antiemetic prescription practices in chemotherapy-induced nausea and vomiting (CINV), in order to evaluate their compliance with OMEDIT's guidelines. Are not included...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：10.1016/j.bulcan.2016.03.009
更新日期：2016-07-01 00:00:00
abstract：:The epidemiology of cancers is known in France through mortality data provided by Inserm and morbidity data obtained by French tumor registries. The purpose of this study was to compare the incidence of laryngeal cancers in 9 French departments and to give an estimate of this incidence for the whole of France, based o...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：
更新日期：2004-04-01 00:00:00
abstract：:Infection of secondary mouse fibroblast cultures with human cytomegalovirus (HCMV) led to the production of viral antigens in the absence of detectable virus replication. Antigen production was not dependent on viral DNA synthesis since it was not inhibited by cytosine arabinoside. Beginning at 15 days post-infection,...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：
更新日期：1976-07-01 00:00:00
abstract：:The most recent cancer mortality and morbidity data available for France are presented. In 1999, cancers are the first cause of death among men (87,000 deaths) and the second most common among women (57,000 deaths) after cardiovascular diseases. Lung cancer is the most common cause of cancer death (21,000) in the male...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:We describe the psychological reactions after diagnosis and treatment of the malignant intraocular tumors: uveal melanoma and retinoblastoma. The chapter on uveal melanoma includes general consideration on the treatment of these tumors, the psychological effects on the patients, the professional and social problems, t...
journal_title：Bulletin du cancer
pub_type： 杂志文章,评审
doi：
更新日期：2001-11-01 00:00:00
abstract：:Margin status in cervical pathology is one of most important predictive factor of recurrent disease. Even if management of surgical biopsy is standardized, quality of surgical procedure is fundamental. Frozen section can be realise in order to complete surgical procedure if margins are involved. Extemporaneous exam of...
journal_title：Bulletin du cancer
pub_type： 杂志文章,评审
doi：10.1684/bdc.2008.0756
更新日期：2008-12-01 00:00:00
abstract：BACKGROUND:We analyzed renal cell carcinoma (RCC) brain metastasis (BM) risk factors and compared BM occurrence in metastatic RCC (mRCC) treated with or without anti-angiogenic agents (AA). METHODS:Data from all consecutive metastatic RCC patients (patients) treated in a french cancer center between 1995 and 2008 were...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：10.1684/bdc.2012.1672
更新日期：2012-12-01 00:00:00
abstract：:Cancer patients are often moved inside the hospital to different examination clinics, such as radiology, CT scan, MRI... and to treatment clinics, such as radiotherapy. These transports induce important pain phenomena, not really recognized by professional teams. As these kinds of pains are expected and can be prevent...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：10.1684/bdc.2008.0638
更新日期：2008-05-01 00:00:00
abstract：:When cells are exposed to ionizing radiation, they initiate a complex response that includes the arrest of cell cycle progression in G1 and G2, apoptosis and DNA repair. DNA is an important subcellular target of ionizing radiation, but oxydative damage to plasma membrane lipids initiates signal transduction pathways t...
journal_title：Bulletin du cancer
pub_type： 杂志文章,评审
doi：
更新日期：1999-04-01 00:00:00
abstract：:Colorectal cancer occurs after the age of 75 in 50% of the case, but elderly patients are under-treated and far from an optimal management of their disease. Principles of colorectal cancer management after the age of 75 are theoretically the same than for younger patients, but physiological age, comorbidities and pati...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：10.1684/bdc.2007.0545
更新日期：2008-05-28 00:00:00
abstract：:Management of rectal cancers with synchronous metastasis is difficult. We evaluated in 23 patients a combination of pelvic radiotherapy at the dose of 45 Gy in 5 weeks and 25 fractions with chemotherapy by 5-fluorouracil (350 mg/m2/day) and folinic acid (20 mg/m2/day) for 5 days at the time of the first and the fifth ...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：
更新日期：1998-08-01 00:00:00
abstract：:Cancer patients frequently undergo imaging examinations to diagnosis but also to evaluate their responses to treatment. These patients are also at high risk of kidney impairment before considering the possible nephrotoxicity of their chemotherapy. In this context, it is overriding to know contrast agents induced risks...
journal_title：Bulletin du cancer
pub_type： 杂志文章,评审
doi：10.1684/bdc.2011.1477
更新日期：2012-03-01 00:00:00
abstract：:Angiopoietin-2 is a new member of the family of the ligands of Tek (Tie2), a transmembrane receptor with tyrosine kinase activity which is specifically expressed in endothelial cells during angiogenesis. Several lines of evidence indicate that angiopoietin-1 is involved in pericyte recruitment by endothelial cells and...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：
更新日期：1997-11-01 00:00:00
abstract：:The dependency between the risk of death and age is analysed, and the contribution of cancer to the overall risk of death is evaluated as a function of age. The frequency of the different cancer sites is described in different age groups. Lastly cancer mortality trends are presented by age. The risk of death from canc...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：10.1684/bdc.2007.0531
更新日期：2008-05-28 00:00:00
abstract：:In 2006, a total number of 149,000 cancer deaths were observed in France, 88,500 in the male population and 60,500 in the female population. In 2005, the number of new diagnoses of cancer is estimated to be 319,000, 183,000 among men and 136,000 among women. Age-standardised mortality rates are decreasing for most fre...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：10.1684/bdc.2008.0795
更新日期：2009-01-01 00:00:00
abstract：:Cerebral non Hodgkin's lymphomas (NHL) of immunocompetent patients are rare disease (1% of all NHL), but their incidence has been steadily increasing in the last 20 years. Most cerebral NHL are diffuse large cell NHL with a B phenotype. These tumors are most often localized in the central nervous system, the eye or me...
journal_title：Bulletin du cancer
pub_type： 杂志文章,meta分析
doi：
更新日期：1997-10-01 00:00:00
abstract：:The 4 year results of a prospective clinical trial on the treatment of operable breast cancer, comparing the effects of preoperative radiotherapy followed by surgery with those of surgery followed or not by postoperative radiotherapy are presented for patient groups of approximately 100 each. At 4 years 85 per cent su...
journal_title：Bulletin du cancer
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：1977-01-01 00:00:00
abstract：:Ten years after the discovery of the predictive value of KRAS status for anti-EGFR antibodies, other genes involved in oncogenesis and therapeutic responses were identified and are now systematically sought. Molecular diagnosis often requires invasive procedures, sometimes iatrogenic, and is limited by feasibility pro...
journal_title：Bulletin du cancer
pub_type： 杂志文章,评审
doi：10.1016/j.bulcan.2015.10.017
更新日期：2016-01-01 00:00:00
abstract：BACKGROUND:Sorafenib is the standard treatment for advanced hepatocellular carcinoma (HCC). Due to its peculiar toxicities, improving patient's tolerance may need close follow-up. Nurses can play a crucial role, by driving a patient education program (EP). We aimed to prove that adding EP to usual care (UC) improves pa...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：10.1016/j.bulcan.2016.09.017
更新日期：2016-11-01 00:00:00
abstract：:Twenty-five adult patients, 15 men and 10 women, with a median age of 49, and presenting with metastatic or locally advanced soft tissue sarcomas, have been treated with chemotherapy protocol combining cisplatinum, 100 mg/m2, vindesine, 4 mg/m2, and either adriamycin, 50 mg/m2 (APEL) (16 patients), or epirubicin, 100 ...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：
更新日期：1987-01-01 00:00:00
abstract：:Esophageal cancer has a poor prognosis. Recent epidemiological data has shown a modification of histologic types, as adenocarcinoma represents more than 50% of all patients newly diagnosed. Despite progress of surgery, overall survival at 5 years is still about 20% for resectable tumors, supporting the need for additi...
journal_title：Bulletin du cancer
pub_type： 杂志文章,评审
doi：
更新日期：2006-11-01 00:00:00
abstract：:Between 1959 and 1974, two hundred and ninety six carcinomas of the nasopharynx were seen at the Institut Gustave-Roussy, in adults. 78% were in man. The most frequently encountered were undifferentiated or poorly differentiated forms, 76% of cases. 38% only of the patients had their birthplace in France. On the first...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：
更新日期：1975-07-01 00:00:00
abstract：:IMiDs belong to a new pharmalogical class, whose principal therapeutic agents are the thalidomide and the lenalidomide. They have immunomodulatory and antiangiogenic properties, as well as a direct effect on tumor cells. Thalidomide and lenalidomide were first approved for multiple myeloma, and in 5q-myelodysplastic s...
journal_title：Bulletin du cancer
pub_type： 杂志文章,评审
doi：10.1684/bdc.2011.1404
更新日期：2011-08-01 00:00:00
abstract：:Colorectal primary signet ring cell carcinoma (SRCC) is a rare entity accounting for nearly 1% of all colorectal carcinomas. It is an independent prognostic factor associated with less favorable outcome. This aggressiveness is mainly due to the intrinsic biology of these tumors. Here is an overview of the literature r...
journal_title：Bulletin du cancer
pub_type： 杂志文章,评审
doi：10.1016/j.bulcan.2015.07.005
更新日期：2015-10-01 00:00:00
abstract：:The isotopic detection of the sentinel node is undergoing a fast development in breast cancer and melanoma. It requires a good collaboration between a surgeon and a nuclear medicine specialist. Although the method is now well defined for melanoma, several options remain possible for breast cancer. The injected dose an...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：
更新日期：2002-07-01 00:00:00
abstract：:Pulmonary sarcomatoid carcinomas are a rare group of tumors accounting for about 1 % of non-small cell lung carcinoma (NSCLC). In 2004, World Health Organization classification united under this name all the carcinomas with sarcomatous or sarcomatous-like component with spindle cell or giant cell appearance. There are...
journal_title：Bulletin du cancer
pub_type： 杂志文章,评审
doi：10.1684/bdc.2012.1619
更新日期：2012-10-01 00:00:00
abstract：:Twenty-six patients with metastatic breast cancer where treated, after failure of a first line chemotherapy including an anthracycline, with a second line combination of vindesine, methotrexate and thiotepa. Overall tolerance of this treatment was good. There were one complete response and two partial responses. The a...
journal_title：Bulletin du cancer
pub_type： 杂志文章
doi：
更新日期：1988-01-01 00:00:00
abstract：:Important improvements in local control with increasing function-sparing treatment have been achieved in adult soft tissue sarcomas (STS). However, the global prognosis of these diseases remains poor and 40% of patients with STS currently die of metastases within 5 years. In fact, the impact of chemotherapy remains de...
journal_title：Bulletin du cancer
pub_type： 杂志文章,meta分析
doi：
更新日期：1997-06-01 00:00:00
abstract：:The group of rare malignant ovarian tumors includes the group of germ cell tumors, sex cords stromal ovarian tumors, small cell carcinoma, malignant Brenner tumors, rare epithelial tumors such as mucinous carcinoma, clear cell carcinoma, or low-grade serous carcinoma, as well as ovarian carcinosarcoma. Together they c...
journal_title：Bulletin du cancer
pub_type： 杂志文章,评审
doi：10.1016/j.bulcan.2020.01.011
更新日期：2020-03-01 00:00:00
