共查询到20条相似文献,搜索用时 31 毫秒
1.
Flavia RM Latini Jefferson P Hemerly Beatriz CG Freitas Gisele Oler Gregory J Riggins Janete M Cerutti 《BMC cancer》2011,11(1):11
Background
Mounting evidence has indicated that ABI3 (ABI family member 3) function as a tumor suppressor gene, although the molecular mechanism by which ABI3 acts remains largely unknown. 相似文献2.
Outi Kilpivaara Matias Rantanen Anitta Tamminen Kristiina Aittomäki Carl Blomqvist Heli Nevanlinna 《BMC cancer》2008,8(1):71
Background
A recent genome wide case-control association study identified NuMA region on 11q13 as a candidate locus for breast cancer susceptibility. Specifically, the variant Ala794Gly was suggested to be associated with increased risk of breast cancer. 相似文献3.
Background
BRCA1 and BRCA2 are the two most important genes associated with familial breast and ovarian cancer susceptibility. In addition, PALB2 has recently been identified as a breast cancer susceptibility gene in several populations. Here we have evaluated whether large genomic rearrangement in these genes could explain some of Finnish breast and/or ovarian cancer families. 相似文献4.
Post‐operative stereotactic radiotherapy for the treatment of intracranial haemangiopericytoma: ‘A Study of Dose and Outcome’
下载免费PDF全文
![点击此处可从《Journal of Medical Imaging and Radiation Oncology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Rohan Nair Vanessa Panettieri Joe H Chang Michael Dally 《Journal of Medical Imaging and Radiation Oncology》2018,62(4):573-577
Introduction
This study was performed to assess the relationship between tumour response and radiation dose in equivalent 2 Gy per fraction (EQD2).Method
A retrospective cohort analysis of 21 patients with a diagnosis of intracranial haemangiopericytoma between 2000 and 2013 was included in this study. A total of 39 lesions were analysed. The equivalent dose in 2 Gy per fraction was calculated by assigning an alpha–beta ratio of 12 Gy. A paired t‐test compared dose (EQD2) and tumour response, and as the outcome was binary, a logistic regression analysis was performed.Results
In total, there were 14 cases of progression and 25 cases of non‐progression. It was estimated that for a one unit increase in EQD2, the odds of non‐progression were increased by a factor of 1.13 (P = 0.026). After adjusting for PTV volume, the estimated effect of EQD2 (min) on tumour response was stronger, with an estimated odds ratio of 1.36 for an increase of one unit and an odds ratio of 21.6 for an increase of 10 units (P = 0.015). The dose range varied with varying PTV volumes. Based on the logistic model, the probability of having non‐progression is larger than 50% for EQ2Dmin doses larger than 30–40 Gy, in particular for volumes larger than 3.67 cm3.Conclusion
This study demonstrates that there is a relationship between dose (EQD2) and outcome. With increasing dose, the likelihood of regression is higher. When adjusted for PTV volume, the response appeared stronger. The dose varied significantly with changes in the size of the PTV. 相似文献5.
<Emphasis Type="Italic">ErbB3</Emphasis> is required for ductal morphogenesis in the mouse mammary gland
下载免费PDF全文
![点击此处可从《Breast cancer research : BCR》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Amy J Jackson-Fisher Gary Bellinger Jerrica L Breindel Fatteneh A Tavassoli Carmen J Booth James K Duong David F Stern 《Breast cancer research : BCR》2008,10(6):R96
Introduction
The receptor ErbB3/HER3 is often over-expressed in human breast cancers, frequently in conjunction with over-expression of the proto-oncogene ERBB2/HER2/NEU. Although the prognostic/predictive value of ErbB3 expression in breast cancer is unclear, ErbB3 is known to contribute to therapeutic resistance. Understanding ErbB3 functions in the normal mammary gland will help to explain its role in cancer etiology and as a modulator of signaling responses to the mammary oncogene ERBB2. 相似文献6.
Shima K Morikawa T Baba Y Nosho K Suzuki M Yamauchi M Hayashi M Giovannucci E Fuchs CS Ogino S 《Cancer causes & control : CCC》2011,22(2):301-309
Objective
O 6-methylguanine-DNA methyltransferase (MGMT) is a DNA repair enzyme. MGMT promoter hypermethylation and epigenetic silencing often occur as early events in carcinogenesis. However, prognostic significance of MGMT alterations in colorectal cancer remains uncertain. 相似文献7.
Background
Epithelial growth factor receptor (EGFR) and KRAS mutation status have been reported as predictive markers of tumour response to EGFR inhibitors. High resolution melting (HRM) analysis is an attractive screening method for the detection of both known and unknown mutations as it is rapid to set up and inexpensive to operate. However, up to now it has not been fully validated for clinical samples when formalin-fixed paraffin-embedded (FFPE) sections are the only material available for analysis as is often the case. 相似文献8.
Chien-Chih Lee Yi-Hsiung Lin Wen-Hsin Chang Pei-Chin Lin Yang-Chang Wu Jan-Gowth Chang 《BMC cancer》2011,11(1):58
Background
Histone modifications in tumorigenesis are increasingly recognized as important epigenetic factors leading to cancer. Increased phosphorylation levels of histone H3 as a result of aurora B and pMSK1 overexpression were observed in various tumors. We selected aurora B and MSK1 as representatives for testing various compounds and drugs, and found that squamocin, a bis-tetrahydrofuran annonaceous acetogenin, exerted a potent effect on histone H3 phosphorylation. 相似文献9.
Background
Recent studies relating to the association between DNA repair-gene polymorphisms and colorectal cancer risk would, to the best of our knowledge, appear to be very limited. This study was designed to examine the polymorphisms associated with three DNA repair genes, namely: XRCC1 Arg399Gln, XRCC3 Thr241Met and XPD Lys751Gln, and investigate their role as susceptibility markers for colorectal cancer. 相似文献10.
Michael Krypuy Ahmed Ashour Ahmed Dariush Etemadmoghadam Sarah J Hyland Australian Ovarian Cancer Study Group Anna deFazio Stephen B Fox James D Brenton David D Bowtell Alexander Dobrovic 《BMC cancer》2007,7(1):168
Background
p53 is commonly inactivated by mutations in the DNA-binding domain in a wide range of cancers. As mutant p53 often influences response to therapy, effective and rapid methods to scan for mutations in TP53 are likely to be of clinical value. We therefore evaluated the use of high resolution melting (HRM) as a rapid mutation scanning tool for TP53 in tumour samples. 相似文献11.
Background
The telomeric region of mouse chromosome 12 has previously shown frequent allelic loss in murine lymphoma. The Bcl11b gene has been identified and suggested as a candidate tumor suppressor gene within this region. In this study, we aimed to elucidate whether Bcl11b is mutated in lymphomas with allelic loss, and whether the mutations we detected conferred any effect on cell proliferation and apoptosis. 相似文献12.
Christelle Seigne Sandra Fontanière Christine Carreira Jieli Lu Wei-Ming Tong Bernard Fontanière Zhao-Qi Wang Chang Xian Zhang Lucien Frappart 《BMC cancer》2010,10(1):395
Background
Mutations of the MEN1 gene predispose to multiple endocrine neoplasia type 1 (MEN1) syndrome. Our group and others have shown that Men1 disruption in mice recapitulates MEN1 pathology. Intriguingly, rare lesions in hormone-dependent tissues, such as prostate and mammary glands, were also observed in the Men1 mutant mice. 相似文献13.
Fiona C. Malcomson BSc MRes PhD Christopher Wiggins BSc MRes Solange Parra-Soto BSc MSc Frederick K. Ho BSc PhD Carlos Celis-Morales BSc PhD Linda Sharp BSc MSc PhD John C. Mathers BSc Dip. Nutr. PhD 《Cancer》2023,129(17):2655-2670
Background
The World Cancer Research Fund/American Institute for Cancer Research Cancer Prevention Recommendations are lifestyle-based guidelines that aim to reduce cancer risk. A systematic review and meta-analysis of studies investigating associations between a score for adherence to the 2018 Cancer Prevention Recommendations and cancer risk was conducted.Methods
MEDLINE, Embase, Web of Science, and Scopus were searched for studies published to November 28, 2022. In meta-analysis, the estimated risk ratios and 95% CIs for adherence score as a continuous (per 1-point increment) and categorical (highest vs. lowest score category) variable using random-effects models were estimated.Results
Eighteen studies (11 cohort; seven case-control) were included investigating incidence of breast (n = 7), colorectal (n = 5), prostate (n = 2), lung (n = 2), pancreatic (n = 1), endometrial (n = 1), unknown primary cancer (n = 1), chronic lymphocytic leukemia (n = 1), and overall (any) cancer (n = 1). The summary risk ratio per 1-point increment in adherence score was 0.89 (95% CI, 0.85–0.93; I2 = 76.5%; n = 7) for breast cancer, 0.88 (95% CI, 0.84–0.91; I2 = 26.2%; n = 4) for colorectal cancer, and 0.92 (95% CI, 0.86–0.98, I2 = 66.0%; n = 2) for lung cancer. There were no significant associations with prostate or other cancers. Meta-analysis results using categorical adherence score variables were consistent with these findings.Conclusions
Greater adherence to the 2018 World Cancer Research Fund/American Institute for Cancer Research Cancer Prevention Recommendations was associated with lower risk of breast, colorectal, and lung cancers. Future studies investigating associations with risk of other forms of cancer are warranted.PROSPERO registration number
CRD42022313327. 相似文献14.
Isabel López-Villar Rosa Ayala Jan Wesselink Juan Diego Morillas Elena López José Carlos Marín José Díaz-Tasende Sara González Luis Robles Joaquín Martínez-López 《BMC cancer》2010,10(1):408
Background
MUTYH-associated polyposis (MAP) is a disorder caused by bi-allelic germline MUTYH mutation, characterized by multiple colorectal adenomas. In order to identify mutations in MUTYH gene we applied High Resolution Melting (HRM) genotyping. HRM analysis is extensively employed as a scanning method for the detection of heterozygous mutations. Therefore, we applied HRM to show effectiveness in detecting homozygous mutations for these clinically important and frequent patients. 相似文献15.
Jürgen Veeck Erik Noetzel Nuran Bektas Edgar Jost Arndt Hartmann Ruth Knüchel Edgar Dahl 《Molecular cancer》2008,7(1):83
Background
We have previously reported that expression of the Wnt antagonist genes SFRP1 and SFRP5 is frequently silenced by promoter hypermethylation in breast cancer. SFRP2 is a further Wnt inhibitor whose expression was recently found being downregulated in various malignancies. Here we investigated whether SFRP2 is also implicated in human breast cancer, and if so whether SFRP2 promoter methylation might serve as a potential tumor biomarker. 相似文献16.
Background
Pituitary tumor transforming gene (PTTG) is a novel oncogene that is expressed abundantly in most tumors. Overexpression of PTTG induces cellular transformation and promotes tumor formation in nude mice. PTTG has been implicated in various cellular processes including sister chromatid separation during cell division as well as induction of apoptosis through p53-dependent and p53-independent mechanisms. The relationship between PTTG and p53 remains unclear, however. 相似文献17.
Objective|
The Wnt signaling pathway is crucial for pulmonary development and differentiation; dysregulation of the Wnt signaling pathway may impair lung function. Indeed, single nucleotide polymorphisms (SNPs) of Wnt pathway-related genes have been suggested as risk factors for certain types of cancers. In this study, we aimed to evaluate the influence of SNPs in Wnt-related genes (TCF2, MMP9) on susceptibility to lung cancer. 相似文献18.
Lara Bethke Emily Webb Gabrielle Sellick Matthew Rudd Stephen Penegar Laura Withey Mobshra Qureshi Richard Houlston 《BMC cancer》2007,7(1):123
Background
Cytochrome P 450 (CYP) enzymes have the potential to affect colorectal cancer (CRC) risk by determining the genotoxic impact of exogenous carcinogens and levels of sex hormones. 相似文献19.
Non‐small cell lung cancer brain metastasis screening in the era of positron emission tomography‐CT staging: Current practice and outcomes
下载免费PDF全文
![点击此处可从《Journal of Medical Imaging and Radiation Oncology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Mauricio E Diaz Maciej Debowski Craig Hukins David Fielding Kwun M Fong Catherine S Bettington 《Journal of Medical Imaging and Radiation Oncology》2018,62(3):383-388