Epigenetic
Mostrando 13-24 de 617 artigos, teses e dissertações.
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13. Methylation status of the PPP1R13L promoter region among lung cancer patients and healthy controls. Analytical cross-sectional study
ABSTRACT BACKGROUND: There is evidence that genetic predisposition and epigenetic alteration (e.g. DNA methylation) play major roles in lung cancer. In our genetic epidemiological studies, rs1970764 in oncogene PPP1R13L was most consistently associated with lung cancer risk. Here, we explored the role of PPP1R13L methylation in lung cancer development. DE
Sao Paulo Med. J.. Publicado em: 29/08/2019
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14. Position-dependent correlation between TBX22 exon 5 methylation and palatal shelf fusion in the development of cleft palate
Abstract: DNA methylation is essential for spatiotemporally-regulated gene expression in embryonic development. TBX22 (Chr X: 107667964-107688978) functioning as a transcriptional repressor affects DNA binding, sumoylation, and transcriptional repression associated with X-linked cleft palate. This study aimed to explore the relationship and potential mechani
An. Acad. Bras. Ciênc.. Publicado em: 19/06/2019
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15. Methylation of p16 ink4a promoter is independent of human papillomavirus DNA physical state: a comparison between cervical pre-neoplastic and neoplastic samples
BACKGROUND Epigenetic modifications in host cells, like p16 ink4a methylation, have been considered as putative complementary mechanisms for cancer development. Because only a small proportion of infected women develop cervical cancer, other factors might be involved in carcinogenesis, either independently or in association with high-risk human papillomavir
Mem. Inst. Oswaldo Cruz. Publicado em: 17/12/2018
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16. Insights on the epigenetic mechanisms underlying pulmonary arterial hypertension
Pulmonary arterial hypertension (PAH), characterized by localized increased arterial blood pressure in the lungs, is a slow developing long-term disease that can be fatal. PAH is characterized by inflammation, vascular tone imbalance, pathological pulmonary vascular remodeling, and right-sided heart failure. Current treatments for PAH are palliative and deve
Braz J Med Biol Res. Publicado em: 18/10/2018
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17. Epidemiological science and cancer control
Epidemiological methods are essential for the discovery of cancer risks and prognostic factors as well as for the evaluation of cancer prevention measures. In this review, we discuss epidemiological surveillance procedures for data collection and processing to guide and evaluate the consequences of anticancer efforts for populations, assess the identificatio
Clinics. Publicado em: 21/09/2018
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18. Study of major genetic factors involved in pituitary tumorigenesis and their impact on clinical and biological characteristics of sporadic somatotropinomas and non-functioning pituitary adenomas
Genetic and functional aberrations of guanine nucleotide-binding protein, alpha stimulating (GNAS), aryl hydrocarbon receptor interacting protein (AIP), and pituitary tumor transforming gene (PTTG) are among the most prominent events in pituitary tumorigenesis. A cohort of Brazilian patients with somatotropinomas (n=41) and non-functioning pituitary adenomas
Braz J Med Biol Res. Publicado em: 25/06/2018
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19. Role of non-coding RNAs in non-aging-related neurological disorders
Protein coding sequences represent only 2% of the human genome. Recent advances have demonstrated that a significant portion of the genome is actively transcribed as non-coding RNA molecules. These non-coding RNAs are emerging as key players in the regulation of biological processes, and act as "fine-tuners" of gene expression. Neurological disorders are cau
Braz J Med Biol Res. Publicado em: 11/06/2018
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20. An association study of FOXO3 variant and longevity
Abstract Human longevity is a polygenic and multifactorial trait. Pathways related to lifespan are complex and involve molecular, cellular, and environmental processes. In this analytical observational study, we evaluated the relationship between environment factors, oxidative stress status, DNA integrity level, and the association of FOXO3 (rs2802292), SOD2
Genet. Mol. Biol.. Publicado em: 11/06/2018
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21. An in silico pipeline to filter the Toxoplasma gondii proteome for proteins that could traffic to the host cell nucleus and influence host cell epigenetic regulation
Toxoplasma gondii uses epigenetic mechanisms to regulate both endogenous and host cell gene expression. To identify genes with putative epigenetic functions, we developed an in silico pipeline to interrogate the T. gondii proteome of 8313 proteins. Step 1 employs PredictNLS and NucPred to identify genes predicted to target eukaryotic nuclei. Step 2 uses GOLi
Mem. Inst. Oswaldo Cruz. Publicado em: 28/05/2018
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22. Antimicrobial activity and acetylcholinesterase inhibition by extracts from chromatin modulated fungi
ABSTRACT Major health challenges as the increasing number of cases of infections by antibiotic multiresistant microorganisms and cases of Alzheimer's disease have led to searching new control drugs. The present study aims to verify a new way of obtaining bioactive extracts from filamentous fungi with potential antimicrobial and acetylcholinesterase inhibitor
Braz. J. Microbiol.. Publicado em: 2018-03
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23. “Maxillary lateral incisor partial anodontia sequence”: a clinical entity with epigenetic origin
RESUMO A relação entre a anodontia parcial do incisivo lateral e o deslocamento palatino do canino superior não irrompido não pode ser considerada uma anomalia dentária múltipla com etiopatogenia genética definida, a ponto de ser considerada como uma “síndrome”. Os genes envolvidos sequer foram identificados e localizados no genoma humano, e nem
Dental Press J. Orthod.. Publicado em: 2017-11
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24. Alternatively spliced MEFV transcript lacking exon 2 and its protein isoform pyrin-2d implies an epigenetic regulation of the gene in inflammatory cell culture models
Abstract The function of gene body DNA methylation in alternative splicing, and its relation to disease pathogenesis is not fully elucidated. The gene for familial Mediterranean fever (MEFV) encodes the pyrin protein and contains a 998 bp CpG island, covering the second exon, which is differentially methylated in FMF patients compared to healthy controls. Ou
Genet. Mol. Biol.. Publicado em: 31/08/2017