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https://www.readbyqxmd.com/read/28718528/impairment-of-sperm-dna-methylation-in-male-infertility-a-meta-analytic-study
#1
D Santi, S De Vincentis, E Magnani, G Spaggiari
Considering the widespread use of assisted reproductive techniques (ART), DNA methylation of specific genes involved in spermatogenesis achieves increasingly clinical relevance, representing a possible explanation of increased incidence of syndromes related to genomic imprinting in medically assisted pregnancies. Several trials suggested a relationship between male sub-fertility and sperm DNA methylation, although its weight on seminal parameters alteration is still a matter of debate. To evaluate whether aberrant sperm DNA methylation of imprinted genes is associated with impaired sperm parameters...
July 2017: Andrology
https://www.readbyqxmd.com/read/28692553/simultaneous-presentation-of-wilms-tumor-and-immature-ovarian-teratoma-in-beckwith-wiedemann-syndrome
#2
Jason C White, Jinglan Liu, Akash Nahar
The Beckwith-Wiedemann syndrome is a cancer predisposition syndrome characterized by a predilection to embryonal tumor growth, especially Wilms tumor, adrenocortical carcinomas, and hepatoblastomas. Genetic analysis of patients has revealed a link to the imprinted domain of the 11p15.5 chromosome and methylation status of the H19 locus and Igf-2. These genes have also been studied in other cancers, including ovarian teratomas. Our case is a patient with a simultaneous presentation of a Wilms tumor and immature ovarian teratoma and subsequently diagnosed with Beckwith-Wiedemann syndrome, which has not been previously described...
July 7, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28687618/huwe1-sustains-normal-ovarian-epithelial-cell-transformation-and-tumor-growth-through-the-histone-h1-3-h19-cascade
#3
Dong Yang, Bin Sun, Xiaohong Zhang, Daomei Cheng, Xiaoping Yu, Lanzhen Yan, Lei Li, Sanqi An, Hua Jiang, Anna Lasorella, Antonio Iavarone, Shu Zhang, Fangdong Zou, Xudong Zhao
Ubiquitination-directed protein degradation is important in many cancers for tumor initiation and maintenance, and E3 ligases containing HECT domains are emerging as new therapeutic targets. In contrast to many other E3 ligases, the role of HUWE1 in ovarian cancer where HUWE1 is dysregulated has been unclear. Here we report that genetic deletion of Huwe1 in the mouse inhibits transformation of ovary surface epithelium cells without significantly affecting cell survival and apoptosis, and that Huwe1 deletion after tumors have been initiated inhibits tumor growth...
July 7, 2017: Cancer Research
https://www.readbyqxmd.com/read/28676681/maternal-vitamin-d-dna-methylation-at-imprint-regulatory-regions-and-offspring-weight-at-birth-1-year-and-3-years
#4
S E B Neelon, A J White, A C Vidal, J M Schildkraut, A P Murtha, S K Murphy, S W Kullman, C Hoyo
BACKGROUND/OBJECTIVE: Vitamin D deficiency during pregnancy is associated with poor birth outcomes in some studies, but few have examined weight beyond birth. Additionally, little is known about how vitamin D influences DNA methylation of regulatory regions known to be involved in growth, as possible mediators to weight status in offspring. SUBJECTS/METHODS: We conducted linear regressions to assess maternal plasma 25-hydroxyvitamin D (25(OH)D) by quartile and birth weight for gestational age z-score, 1-year weight-for-length z-score, and 3-year body mass index (BMI) z-score among 476 mother/infant dyads from a prospective cohort...
July 5, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28674270/fate-of-methylated-unmethylated-h19-imprinting-control-region-after-paternal-and-maternal-pronuclear-injection
#5
Asami Oji, Tomojiro Amano, Yasuaki Maeta, Naohiro Hori, Kiyotaka Hatsuzawa, Kenzo Sato, Tomoko Nakanishi
The paternal-allele-specific methylation of the Igf2/H19 imprinting control region (ICR) is established during gametogenesis and maintained throughout development. To elucidate the requirement of the germline passage in the maintenance of the imprinting methylation, we established a system introducing a methylated or unmethylated ICR-containing DNA fragment (ICR-F) into the paternal or maternal genome by microinjecting into the paternal or maternal pronucleus of fertilized eggs, and traced the methylation pattern in the ICR-F...
June 30, 2017: Experimental Animals
https://www.readbyqxmd.com/read/28668938/lncrna-h19-mediates-bmp9-induced-osteogenic-differentiation-of-mesenchymal-stem-cells-mscs-through-notch-signaling
#6
Junyi Liao, Xinyi Yu, Xue Hu, Jiaming Fan, Jing Wang, Zhicai Zhang, Chen Zhao, Zongyue Zeng, Yi Shu, Ruyi Zhang, Shujuan Yan, Yasha Li, Wenwen Zhang, Jing Cui, Chao Ma, Li Li, Yichun Yu, Tingting Wu, Xingye Wu, Jiayan Lei, Jia Wang, Chao Yang, Ke Wu, Ying Wu, Jun Tang, Bai-Cheng He, Zhong-Liang Deng, Hue H Luu, Rex C Haydon, Russell R Reid, Michael J Lee, Jennifer Moriatis Wolf, Wei Huang, Tong-Chuan He
Mesenchymal stem cells (MSCs) are multipotent progenitor cells that can undergo self-renewal and differentiate into multiple lineages. Osteogenic differentiation from MSCs is a well-orchestrated process and regulated by multiple signaling pathways. We previously demonstrated that BMP9 is one of the most potent osteogenic factors. However, molecular mechanism through which BMP9 governs osteoblastic differentiation remains to be fully understood. Increasing evidence indicates noncoding RNAs (ncRNAs) may play important regulatory roles in many physiological and/or pathologic processes...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28665070/identification-of-downstream-genes-of-the-mtor-pathway-that-predict-recurrence-and-progression-in-non-muscle-invasive-high-grade-urothelial-carcinoma-of-the-bladder
#7
Subin Jin, In Ho Chang, Jin Wook Kim, Young Mi Whang, Ha Jeong Kim, Soon Auck Hong, Tae Jin Lee
Microarray analysis was used to investigate the lack of identified mammalian target of rapamycin (mTOR) pathway downstream genes to overcome cross-talk at non-muscle invasive high-grade (HG)-urothelial carcinoma (UC) of the bladder, gene expression patterns, gene ontology, and gene clustering by triple (p70S6K, S6K, and eIF4E) small interfering RNAs (siRNAs) or rapamycin in 5637 and T24 cell lines. We selected mTOR pathway downstream genes that were suppressed by siRNAs more than 2-fold, or were up-regulated or down-regulated by rapamycin more than 2-fold...
August 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28662497/identification-and-characterization-of-long-non-coding-rnas-in-osteogenic-differentiation-of-human-adipose-derived-stem-cells
#8
Guangxin Huang, Yan Kang, Zhiyu Huang, Zhiqi Zhang, Fangang Meng, Weishen Chen, Ming Fu, Weiming Liao, Ziji Zhang
BACKGROUND/AIMS: Long noncoding RNAs (lncRNAs) play important roles in stem cell differentiation. However, their role in osteogenesis of human adipose-derived stem cells (ASCs), a promising cell source for bone regeneration, remains unknown. Here, we investigated the expression profile and potential roles of lncRNAs in osteogenic differentiation of human ASCs. METHODS: Human ASCs were induced to differentiate into osteoblasts in vitro, and the expression profiles of lncRNAs and mRNAs in undifferentiated and osteogenic differentiated ASCs were obtained by microarray...
June 28, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28655518/effects-of-long-non-coding-rna-h19-and-microrna-let7a-expression-on-thyroid-cancer-prognosis
#9
Na Liu, Qi Zhou, Yan-Hua Qi, Hua Wang, Li Yang, Qing-Yu Fan
This study aims to explore the effects of long non-coding RNA H19 (lncRNA H19) and microRNA let7a (miRNA let7a) expression on the prognosis of thyroid cancer (TC). This may aid in the discovery of more effective treatment and prognosis approaches for TC. Between January 2008 and January 2011, 131 TC tissues and adjacent tissues were obtained from TC patients. An additional 122 normal thyroid tissues were also collected as normal controls from patients with benign thyroid lesions. Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect lncRNA H19 and miRNA let7a mRNA expression...
June 24, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28652859/lncrna-h19-promotes-the-differentiation-of-bovine-skeletal-muscle-satellite-cells-by-suppressing-sirt1-foxo1
#10
Xiaochun Xu, Shengyue Ji, Weili Li, Bao Yi, Hengxin Li, Hongfu Zhang, Wenping Ma
BACKGROUND: H19 is a well-characterized Long noncoding RNA (lncRNA) that has been proven to promote myoblast differentiation in humans and mice. However, its mechanism of action is still not fully interpreted. METHODS: Using RT-qPCR, we examined H19 RNA levels in various tissues from 1-week, 1-month, 6-month and 36-month old male cattle (i.e., newborn, infant, young and adult). The protein and mRNA levels of MyoG, MyHC, Sirt1 and FoxO1 in the satellite and C2C12 cells with an H19 silencing or overexpression vector were respectively detected using western blot and real-time qPCR...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28641883/petroleum-oil-removal-by-immobilized-bacterial-cells-on-polyurethane-foam-under-different-temperature-conditions
#11
Mauricio J Alessandrello, María S Juárez Tomás, Enzo E Raimondo, Diana L Vullo, Marcela A Ferrero
In this work, a mixed biofilm composed by Pseudomonas monteilii P26 and Gordonia sp. H19 was formed using polyurethane foam (PUF) as immobilization support, for crude oil removal from artificial sea water. Fresh immobilized cells and immobilized cells that were stored at 4°C for two months before use were assessed. The oil removal assays were carried out at microcosm scale at 4, 15 and 30°C. A viability loss of P. monteilii P26 was observed after the storage. The highest removal value (75%) was obtained at 30°C after 7days using fresh immobilized cells on PUF...
June 19, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28630232/long-noncoding-rna-h19-promotes-neuroinflammation-in-ischemic-stroke-by-driving-histone-deacetylase-1-dependent-m1-microglial-polarization
#12
Jue Wang, Haiping Zhao, Zhibin Fan, Guangwen Li, Qingfeng Ma, Zhen Tao, Rongliang Wang, Juan Feng, Yumin Luo
BACKGROUND AND PURPOSE: Long noncoding RNA H19 is repressed after birth, but can be induced by hypoxia. We aim to investigate the impact on and underlying mechanism of H19 induction after ischemic stroke. METHODS: Circulating H19 levels in stroke patients and mice subjected to middle cerebral artery occlusion were assessed using real-time polymerase chain reaction. H19 siRNA and histone deacetylase 1 (HDAC1) plasmid were used to knock down H19 and overexpress HDAC1, respectively...
June 19, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28629288/p53-mutation-and-epigenetic-imprinted-igf2-h19-gene-analysis-in-mesenchymal-stem-cells-derived-from-amniotic-fluid-amnion-endometrium-and-wharton-s-jelly
#13
Tatsanee Phermthai, Puttachart Pokathikorn, Suparat Wichitwiengrat, Sasiprapa Thongbopit, Kittima Tungprasertpol, Suphakde Julavijitphong
Mesenchymal stem cells (MSC) are promising cells for medical therapy. In in vitro expansion, MSC can give rise to progeny with genomic and epigenomic alterations, resulting in senescence, loss terminal differentiation and transformation to cancer. However, MSC genome protects its genetic instability via a guardian function of the P53 tumor suppressor gene and epigenetic balance system during MSC culture. Mutations of P53 and epigenetic alterations have been reported to disrupt the quality and quantity of MSC and initiate tumorigenesis...
June 19, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28624953/genome-wide-analysis-of-differential-dna-methylation-in-silver-russell-syndrome
#14
Di Wu, Chunxiu Gong, Chang Su
Silver-Russell Syndrome (SRS) is clinically heterogeneous disorder characterized by low birth weight, postnatal growth restriction, and variable dysmorphic features. Current evidence strongly implicates imprinted genes as an important etiology of SRS. Although almost half of the patients showed DNA hypomethylation at the H19/IGF2 imprinted domain, and approximately 7%-10% of SRS patients have maternal uniparental disomy of chromosome 7 (UPD (7) mat); the rest of the SRS patients shows unknown etiology. In this study, we investigate whether there are further DNA methylation defects in SRS patients...
June 14, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28611183/the-lncrna-h19-mediates-breast-cancer-cell-plasticity-during-emt-and-met-plasticity-by-differentially-sponging-mir-200b-c-and-let-7b
#15
Wu Zhou, Xiao-Lei Ye, Jun Xu, Ming-Guo Cao, Zheng-Yu Fang, Ling-Yun Li, Guang-Hui Guan, Qiong Liu, Yue-Hui Qian, Dong Xie
Metastasis is a multistep process by which tumor cells disseminate from their primary site and form secondary tumors at a distant site. The pathophysiological course of metastasis is mediated by the dynamic plasticity of cancer cells, which enables them to shift between epithelial and mesenchymal phenotypes through a transcriptionally regulated program termed epithelial-to-mesenchymal transition (EMT) and its reverse process, mesenchymal-to-epithelial transition (MET). Using a mouse model of spontaneous metastatic breast cancer, we investigated the molecular mediators of metastatic competence within a heterogeneous primary tumor and how these cells then manipulated their epithelial-mesenchymal plasticity during the metastatic process...
June 13, 2017: Science Signaling
https://www.readbyqxmd.com/read/28592837/maternally-derived-15q11-2-q13-1-duplication-and-h19-dmr-hypomethylation-in-a-patient-with-silver-russell-syndrome
#16
Sumito Dateki, Masayo Kagami, Keiko Matsubara, Kei Izumi, Satoshi Watanabe, Akiko Nakatomi, Tatsuro Kondoh, Maki Fukami, Hiroyuki Moriuchi
Silver-Russell syndrome (SRS) is a congenital developmental disorder characterized by intrauterine and postnatal growth failure, craniofacial features (including a triangular shaped face and broad forehead), relative macrocephaly, protruding forehead, body asymmetry and feeding difficulties. Hypomethylation of the H19 differentially methylated region (DMR) on chromosome 11p15.5 is the most common cause of the SRS phenotype. We report the first SRS patient with hypomethylation of the H19-DMR and maternally derived 15q11...
June 8, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28574624/proper-reprogramming-of-imprinted-and-non-imprinted-genes-in-cloned-cattle-gametogenesis
#17
Masahiro Kaneda, Shinya Watanabe, Satoshi Akagi, Yasushi Inaba, Masaya Geshi, Takashi Nagai
Epigenetic abnormalities in cloned animals are caused by incomplete reprogramming of the donor nucleus during the nuclear transfer step (first reprogramming). However, during the second reprogramming step that occurs only in the germline cells, epigenetic errors not corrected during the first step are repaired. Consequently, epigenetic abnormalities in the somatic cells of cloned animals should be erased in their spermatozoa or oocytes. This is supported by the fact that offspring from cloned animals do not exhibit defects at birth or during postnatal development...
June 2, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28573522/embryo%C3%A2-development-after-mitochondrial-supplementation-from-induced-pluripotent-stem-cells
#18
Ruiqi Li, Bingqiang Wen, Haijing Zhao, Nengyong Ouyang, Songbang Ou, Wenjun Wang, Jianyong Han, Dongzi Yang
PURPOSE: The purpose of this study was to evaluate the effects of mitochondrial supplementation (MS) on early embryonic development and to assess the safety of MS treatments using induced pluripotent stem cells (iPSCs) as the mitochondrial donor. METHODS: In this study, we evaluated the effect of MS on early embryonic development using induced pluripotent stem cells (iPSCs) as the donor. Mouse zygotes were injected with either mitochondria from iPSCs or a vehicle solution...
June 1, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28564591/whole-transcriptome-screening-reveals-the-regulatory-targets-and-functions-of-long-non-coding-rna-h19-in-epileptic-rats
#19
Chun-Lei Han, Yun-Peng Liu, Xue-Min Zhao, Kai-Liang Wang, Ning Chen, Wei Hu, Jian-Guo Zhang, Ming Ge, Fan-Gang Meng
Understanding the molecular mechanisms mediating epileptogenesis may lead to the development of preventative therapies against epilepsy. Our previous study demonstrated that the long non-coding RNA H19 contributes to epileptogenesis by aggravating status epilepticus-induced neuronal loss, glial cell activation, mossy fiber sprouting, and cognitive impairments in epileptic rats. However, the systematic functions and downstream targets of H19 associated with epileptogenesis are still unknown. In the present study, high-throughput microarray analysis was used to explore the influence of H19 on gene expression in an epileptic rat model...
May 28, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28555334/prenatal-nicotine-exposure-induces-hpa-axis-hypersensitivity-in-offspring-rats-via-the-intrauterine-programming-of-up-regulation-of-hippocampal-gad67
#20
Xia He, Juan Lu, Wanting Dong, Zhexiao Jiao, Chong Zhang, Ying Yu, Zhaohui Zhang, Hui Wang, Dan Xu
The intrauterine programming of hypothalamic-pituitary-adrenal (HPA) axis hypersensitivity is associated with chronic adult diseases. Our previous studies demonstrated the HPA-axis hypersensitivity in offspring rats induced by prenatal nicotine exposure. The goal of the present study is to further investigate the intrauterine programming mechanism. Pregnant Wistar rats were subcutaneously administered with 2.0 mg/kg day of nicotine from gestational day (GD) 9-20. A group of the pregnant rats was euthanized at GD20, and the fetal rats were extracted...
May 29, 2017: Archives of Toxicology
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