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https://www.readbyqxmd.com/read/29442814/evaluation-of-functional-sio%C3%A2-nanoparticles-toxicity-by-a-3d-culture-model
#1
Pascal Pellen-Mussi, Sylvie Tricot-Doleux, Chrystelle Neaime, Nicolas Nerambourg, Francisco Cabello-Hurtado, Stéphane Cordier, Fabien Grasset, Sylvie Jeanne
CONTEXT: as a kind of non-metal oxide SiO2 NPs have been extensively used in biomedicine, pharmaceuticals and other industrial manufacturing fields, such as DNA delivery, cancer therapy… Our group had developed a method based on microemulsion process to prepare SiO2 NPs incorporating photonic or magnetic nanocrystals and luminescent nanosized inorganic metal atom clusters. However, the toxicity of nanoparticles is known to be closely related to their physico-chemical characteristics and chemical composition...
May 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29441626/identification-of-metabolites-of-anticancer-candidate-salinomycin-using-liquid-chromatography-coupled-with-q-tof-and-hybrid-qqq-linear-ion-trap-mass-spectrometry
#2
Małgorzata Olejnik, Lidia Radko, Piotr Jedziniak
RATIONALE: Salinomycin is an ionophore antibiotic with potential anti-cancer activity. The history of its use in veterinary medicine show large differences in species susceptibility to its toxicity. At the same time, the results of so-far research suggest the correlation between the extent and pathways of ionophore biotransformation and its toxicity. The biotransformation pattern of salinomycin has not been studied so far. METHODS: The extracts from culture media of human hepatoma cells (HepG2) exposed to salinomycin were analysed with two mass spectrometry techniques...
February 14, 2018: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29441119/diagnosis-monitoring-and-prevention-of-exposure-related-non-communicable-diseases-in-the-living-and-working-environment-dimopex-project-is-designed-to-determine-the-impacts-of-environmental-exposure-on-human-health
#3
REVIEW
Lygia Therese Budnik, Balazs Adam, Maria Albin, Barbara Banelli, Xaver Baur, Fiorella Belpoggi, Claudia Bolognesi, Karin Broberg, Per Gustavsson, Thomas Göen, Axel Fischer, Dorota Jarosinska, Fabiana Manservisi, Richard O'Kennedy, Johan Øvrevik, Elizabet Paunovic, Beate Ritz, Paul T J Scheepers, Vivi Schlünssen, Heidi Schwarzenbach, Per E Schwarze, Orla Sheils, Torben Sigsgaard, Karel Van Damme, Ludwine Casteleyn
The WHO has ranked environmental hazardous exposures in the living and working environment among the top risk factors for chronic disease mortality. Worldwide, about 40 million people die each year from noncommunicable diseases (NCDs) including cancer, diabetes, and chronic cardiovascular, neurological and lung diseases. The exposure to ambient pollution in the living and working environment is exacerbated by individual susceptibilities and lifestyle-driven factors to produce complex and complicated NCD etiologies...
2018: Journal of Occupational Medicine and Toxicology
https://www.readbyqxmd.com/read/29440947/psychological-stress-and-breast-cancer-incidence-a-systematic-review
#4
REVIEW
Valentina-Fineta Chiriac, Adriana Baban, Dan L Dumitrascu
Objective: Breast cancer is the world's leading cause of cancer mortality in women. Stress is an imminent risk factor with a documented negative impact on neuro-endocrine and immune system. Numerous epidemiological studies have investigated the link between stress and cancer, reporting contradictory results from no association to a close causal link. The impact of the topic and the lack of conclusion compelled this systematic review. Methods: A systematic review was carried out, including all literature studies from 1966 to 2016, investigating the relationship between stress and the occurrence of breast cancer...
2018: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29439926/association-of-single-nucleotide-polymorphisms-of-the-mdm4-gene-with-the-susceptibility-to-breast-cancer-in-a-southeast-iranian-population-sample
#5
Mohammad Hashemi, Sara Sanaei, Seyeh Mehdi Hashemi, Ebrahim Eskandari, Gholamreza Bahari
INTRODUCTION: The murine double minute 4 (MDM4) protein is a negative regulator of p53, and its upregulation has been observed in many tumor types. Previous literature suggested that genetic variations in the MDM4 gene are associated with risk of different cancers. The objective of the present study was to examine the effect of 3 common genetic variants of MDM4, rs4245739 A>C, rs11801299 G>A, and rs1380576 C>G, on the risk of breast cancer (BC) in a southeast Iranian population sample...
January 31, 2018: Clinical Breast Cancer
https://www.readbyqxmd.com/read/29439487/alternative-splicing-as-a-target-for-cancer-treatment
#6
REVIEW
Nancy Martinez-Montiel, Nora Hilda Rosas-Murrieta, Maricruz Anaya Ruiz, Eduardo Monjaraz-Guzman, Rebeca Martinez-Contreras
Alternative splicing is a key mechanism determinant for gene expression in metazoan. During alternative splicing, non-coding sequences are removed to generate different mature messenger RNAs due to a combination of sequence elements and cellular factors that contribute to splicing regulation. A different combination of splicing sites, exonic or intronic sequences, mutually exclusive exons or retained introns could be selected during alternative splicing to generate different mature mRNAs that could in turn produce distinct protein products...
February 11, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29438991/genetic-hitchhiking-and-population-bottlenecks-contribute-to-prostate-cancer-disparities-in-men-of-african-descent
#7
Joseph Lachance, Ali J Berens, Matthew E B Hansen, Andrew K Teng, Sarah A Tishkoff, Timothy R Rebbeck
Prostate cancer (CaP) incidence and mortality rates in African and African American men are greatly elevated compared to other ethnicities. This disparity is likely explained by a combination of social, environmental, and genetic factors. A large number of susceptibility loci have been reported by genome-wide association studies (GWAS), but the contribution of these loci to CaP disparities is unclear. Here we investigated the population structure of 68 previously reported GWAS loci and calculated Genetic Disparity Contribution (GDC) statistics to identify SNPs that contribute the most to differences in CaP risk across populations...
February 8, 2018: Cancer Research
https://www.readbyqxmd.com/read/29438693/cellular-pliancy-and-the-multistep-process-of-tumorigenesis
#8
REVIEW
Alain Puisieux, Roxane M Pommier, Anne-Pierre Morel, Fabrice Lavial
Completion of early stages of tumorigenesis relies on the dynamic interplay between the initiating oncogenic event and the cellular context. Here, we review recent findings indicating that each differentiation stage within a defined cellular lineage is associated with a unique susceptibility to malignant transformation when subjected to a specific oncogenic insult. This emerging notion, named cellular pliancy, provides a rationale for the short delay in the development of pediatric cancers of prenatal origin...
February 12, 2018: Cancer Cell
https://www.readbyqxmd.com/read/29438479/novel-tn916-like-elements-confer-aminoglycoside-macrolide-co-resistance-in-clinical-isolates-of-streptococcus-gallolyticus-ssp-gallolyticus
#9
Stanimir Kambarev, Frédéric Pecorari, Stéphane Corvec
Background: Streptococcus gallolyticus ssp. gallolyticus (Sgg) is a commensal bacterium and an opportunistic pathogen. In humans it has been clinically associated with the incidence of colorectal cancer (CRC) and epidemiologically recognized as an emerging cause of infective endocarditis (IE). The standard therapy of Sgg includes the administration of a penicillin in combination with an aminoglycoside. Even though penicillin-resistant isolates have still not been reported, epidemiological studies have shown that this microbe is a reservoir of multiple acquired genes, conferring resistance to tetracyclines, aminoglycosides, macrolides and glycopeptides...
February 9, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29438375/telomere-length-and-genetics-are-independent-colorectal-tumour-risk-factors-in-an-evaluation-of-biomarkers-in-normal-bowel
#10
Ceres Fernandez-Rozadilla, Christiana Kartsonaki, Connor Woolley, Michael McClellan, Deb Whittington, Gareth Horgan, Simon Leedham, Skirmantas Kriaucionis, James East, Ian Tomlinson
BACKGROUND: Colorectal cancer (CRC) screening might be improved by using a measure of prior risk to modulate screening intensity or the faecal immunochemical test threshold. Intermediate molecular biomarkers could aid risk prediction by capturing both known and unknown risk factors. METHODS: We sampled normal bowel mucosa from the proximal colon, distal colon and rectum of 317 individuals undergoing colonoscopy. We defined cases as having a personal history of colorectal polyp(s)/cancer, and controls as having no history of colorectal neoplasia...
February 13, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/29438362/gene-and-pathway-level-analyses-of-germline-dna-repair-gene-variants-and-prostate-cancer-susceptibility-using-the-icogs-genotyping-array
#11
Edward J Saunders, Tokhir Dadaev, Daniel A Leongamornlert, Ali Amin Al Olama, Sara Benlloch, Graham G Giles, Fredrik Wiklund, Henrik Grönberg, Christopher A Haiman, Johanna Schleutker, Børge G Nordestgaard, Ruth C Travis, David Neal, Nora Pasayan, Kay-Tee Khaw, Janet L Stanford, William J Blot, Stephen N Thibodeau, Christiane Maier, Adam S Kibel, Cezary Cybulski, Lisa Cannon-Albright, Hermann Brenner, Jong Y Park, Radka Kaneva, Jyotsna Batra, Manuel R Teixeira, Hardev Pandha, Koveela Govindasami, Ken Muir, Douglas F Easton, Rosalind A Eeles, Zsofia Kote-Jarai
This corrects the article DOI: 10.1038/bjc.2016.50.
February 13, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/29438172/gastric-carcinomas-with-lymphoid-stroma-an-evaluation-of-the-histopathologic-and-molecular-features
#12
Erika Hissong, Girish Ramrattan, Pan Zhang, Xi Kathy Zhou, Gloria Young, David S Klimstra, Jinru Shia, Helen Fernandes, Rhonda K Yantiss
Gastric carcinoma with lymphoid stroma is an uncommon variant enriched for mutually exclusive Epstein-Barr virus (EBV) positivity and mismatch repair (MMR) deficiency. We performed this study to evaluate molecular alterations in this morphologically homogeneous subtype and compare them with 295 conventional gastric cancers analyzed in The Cancer Genome Atlas study. We identified 31 study cases and subjected them to in situ hybridization for EBV-encoded RNAs and assessment for MMR status. Immunostains for PD-L1, β-catenin, and HER2 were performed; extracted DNA was sequenced with a Comprehensive Cancer Panel...
February 12, 2018: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29436970/why-did-i-get-cancer-perceptions-of-childhood-cancer-survivors-in-korea
#13
Jaehee Yi, Min Ah Kim, Bridget G Parsons, Yelena P Wu
This study explored whether and how childhood cancer survivors in Korea ask and resolve the question of what may have caused their cancer. Thirty-one childhood cancer survivors participated in in-depth interviews about their self-questioning process in this regard. The findings indicate that Korean childhood cancer survivors pondered this question alone due to the stigma attached to cancer in the family and society. Their answers included internal factors (doing "bad things," having unhealthy eating habits, engaging in magical thinking, having a stress-prone personality, or having a biological susceptibility) or external factors (stressors, random events, the environment, or medical conditions)...
February 13, 2018: Social Work in Health Care
https://www.readbyqxmd.com/read/29436922/breast-cancer-family-history-and-allele-specific-dna-methylation-in-the-legacy-girls-study
#14
Hui-Chen Wu, Catherine Do, Irene L Andrulis, Esther M John, Mary B Daly, Saundra S Buys, Wendy K Chung, Julia A Knight, Angela R Bradbury, Theresa H M Keegan, Lisa Schwartz, Izabela Krupska, Rachel L Miller, Regina M Santella, Benjamin Tycko, Mary Beth Terry
Family history, a well-established risk factor for breast cancer, can have both genetic and environmental contributions. Shared environment in families as well as epigenetic changes that also may be influenced by shared genetics and environment may also explain familial clustering of cancers. Epigenetic regulation, such as DNA methylation, can change the activity of a DNA segment without a change in the sequence; environmental exposures experienced across the life course can induce such changes. However, genetic-epigenetic interactions, detected as methylation quantitative trait loci (mQTLs; a...
February 13, 2018: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/29436234/influence-of-hotair-rs920778-and-rs12826786-genetic-variants-on-prostate-cancer-risk-and-progression-free-survival
#15
Ana Isabel Oliveira, Ana Xavier-Magalhães, Catarina Moreira-Barbosa, Hugo Magalhães, Rui Henrique, Carmen Jerónimo, Bruno M Costa
AIM: Evaluate the impact of the single nucleotide polymorphisms rs920778 and rs12826786 in the long noncoding RNA HOTAIR in the susceptibility and prognosis of prostate cancer (PCa) patients. PATIENTS & METHODS: HOTAIR single nucleotide polymorphisms were genotyped by restriction fragment length polymorphism in 151 PCa cases and 180 cancer-free controls. Odds ratio, 95% CIs and prognostic significance were calculated. RESULTS: Our data showed no statistically significant associations between HOTAIR polymorphic variants in rs920778 and rs12826786 and PCa susceptibility...
February 13, 2018: Biomarkers in Medicine
https://www.readbyqxmd.com/read/29435179/identifying-characteristic-mirnas-genes-and-risk-pathways-of-multiple-sclerosis-based-on-bioinformatics-analysis
#16
Deling Luo, Jin Fu
Multiple sclerosis is a chronic autoimmune disorder of the central nervous system. In MS, the genetic susceptibility is high and currently there is no effective treatment. MicroRNA, a small non-coding RNA, plays a vital role in immune responses. Aberrant or dysfunctional miRNAs may cause several diseases, including MS, thus miRNAs and miRNA related genes may be therapeutic weapons against MS. Here, we identified 21 miRNAs in peripheral blood mono-nuclear cells from over 600 persons, including healthy controls...
January 12, 2018: Oncotarget
https://www.readbyqxmd.com/read/29435029/nucleotide-variation-in-atg4a-and-susceptibility-to-cervical-cancer-in-southwestern-chinese-women
#17
Jin-Ju Mao, Li-Xiang Wu, Wei Wang, Yuan-Yuan Ye, Jun Yang, Hong Chen, Qian-Fan Yang, Xiu-Yu Zhang, Bo Wang, Wei-Xian Chen
Early detection of human papillomavirus (HPV) is important for the clinical diagnosis of cervical cancer. However, to date, the pathogenesis of cervical cancer is still unclear. Autophagy is a dynamic process that contributes to the maintenance of cellular homeostasis. Here, we investigate whether variants of autophagy genes affect the occurrence of cervical cancer. In this study, our results indicate that single nucleotide polymorphisms (SNPs) of autophagy-related protein 4 (ATG4), including rs4036579, rs5973822, rs807181, rs807182 and rs807183, have a significant relationship with cervical cancer risk...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434975/validation-of-the-novel-susceptibility-loci-for-prostate-cancer-in-a-chinese-population
#18
Yishuo Wu, Haitao Chen, Ying Ji, Rong Na, Zengnan Mo, Dingwei Ye, Meilin Wang, Jun Qi, Xiaoling Lin, Qiang Ding, Jianfeng Xu, S Lilly Zheng, Yinghao Sun, Wei Meng
The present study evaluated 23 newly identified susceptibility loci for prostate cancer (PCa) in a Chinese population and assessed whether any validated loci were associated with the genetic risk score (GRS) of PCa in a Chinese population. A total of 1,417 patients with PCa and 1,008 controls were recruited in the present study. The association of each single nucleotide polymorphism (SNP) with PCa risk and PCa aggressiveness was analyzed. The predictive ability of two GRSs based on 30 SNPs (GRS30) and the 9 most significant SNPs (GRS9) in the Chinese population were also compared...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434449/impact-of-snp-snp-interactions-of-dna-repair-gene-ercc5-and-metabolic-gene-gstp1-on-gastric-cancer-atrophic-gastritis-risk-in-a-chinese-population
#19
Liang Sang, Zhi Lv, Li-Ping Sun, Qian Xu, Yuan Yuan
AIM: To investigate the interactions of the DNA repair gene excision repair cross complementing group 5 (ERCC5) and the metabolic gene glutathione S-transferase pi 1 (GSTP1) and their effects on atrophic gastritis (AG) and gastric cancer (GC) risk. METHODS: Seven ERCC5 single nucleotide polymorphisms (SNPs) (rs1047768, rs2094258, rs2228959, rs4150291, rs4150383, rs751402, and rs873601) and GSTP1 SNP rs1695 were detected using the Sequenom MassARRAY platform in 450 GC patients, 634 AG cases, and 621 healthy control subjects in a Chinese population...
February 7, 2018: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29433971/large-scale-sequencing-of-testicular-germ-cell-tumour-tgct-cases-excludes-major-tgct-predisposition-gene
#20
Kevin Litchfield, Chey Loveday, Max Levy, Darshna Dudakia, Elizabeth Rapley, Jeremie Nsengimana, D Tim Bishop, Alison Reid, Robert Huddart, Peter Broderick, Richard S Houlston, Clare Turnbull
Testicular germ cell tumour (TGCT), the most common cancer in young men, has a significant heritable basis that has long raised questions as to the existence of underlying major high-penetrance susceptibility gene(s). To determine the contribution of rare gene mutations to the inherited risk of TGCT, we analysed germline whole-exome data for 919 TGCT cases and 1609 cancer-free controls. We compared frequencies between TGCT cases and controls of rare (<1%) and low-frequency (1-5%) coding variants (1) individually and (2) collapsed at the gene level via burden testing (T1, disruptive; T2, all deleterious; and T3, all nonsynonymous) using Fisher's exact test with Bonferroni correction of significance thresholds...
February 9, 2018: European Urology
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