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IGFBP7

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https://www.readbyqxmd.com/read/28035363/adar2-functions-as-a-tumor-suppressor-via-editing-igfbp7-in-esophageal-squamous-cell-carcinoma
#1
Yuan-Bin Chen, Xiao-Yu Liao, Jiang-Bo Zhang, Fang Wang, Hai-De Qin, Lanjun Zhang, Yin Yao Shugart, Yi-Xin Zeng, Wei-Hua Jia
Esophageal squamous cell carcinoma (ESCC), one of the most aggressive cancers, is characterized by heterogeneous genetic and epigenetic changes. Recently, A-to-I RNA editing, catalyzed by adenosine deaminases acting on RNA (ADARs), was found to be aberrantly regulated during tumorigenesis. We previously reported that ADAR2 was downregulated in ESCC but its role was unclear. Thus, we report here that overexpression of ADAR2 can induce apoptosis in ESCC cell lines and inhibit tumor growth in vitro and in vivo...
December 29, 2016: International Journal of Oncology
https://www.readbyqxmd.com/read/28011057/the-ischemic-nephrotoxic-acute-kidney-injury-and-the-use-of-renal-biomarkers-in-clinical-practice
#2
REVIEW
Michele Andreucci, Teresa Faga, Antonio Pisani, Maria Perticone, Ashour Michael
The term Acute Renal Failure (ARF) has been replaced by the term Acute Kidney Injury (AKI). AKI indicates an abrupt (within 24-48h) decrease in Glomerular Filtraton Rate, due to renal damage, that causes fluid and metabolic waste retention and alteration of electrolyte and acid-base balance. The renal biomarkers of AKI are substances or processes that are indicators of normal or impaired function of the kidney. The most used renal biomarker is still serum creatinine that is inadequate for several reasons, one of which is its inability to differentiate between hemodynamic changes of renal function ("prerenal azotemia") from intrinsic renal failure or obstructive nephropathy...
December 21, 2016: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28003188/insulin-like-growth-factor-binding-protein-7-and-tissue-inhibitor-of-metalloproteinases-2-differential-expression-and-secretion-in-human-kidney-tubule-cells
#3
David R Emlet, Nuria Pastor-Soler, Allison Marciszyn, Xiaoyan Wen, Hernando Gomez, William H Humphries, Seth Morrisroe, Jacob K Volpe, John A Kellum
We have characterized the expression and secretion of the acute kidney injury biomarkers Insulin-Like Growth Factor Binding Protein 7 (IGFBP7) and Tissue Inhibitor of Metalloproteinases-2 (TIMP-2) in human kidney epithelial cells in primary cell culture and tissue. We established cell culture model systems of primary kidney cells of proximal and distal tubule origin and observed that both proteins are indeed expressed and secreted in both tubule cell types in vitro. However, TIMP-2 is both expressed and secreted preferentially by cells of distal tubule origin, while IGFBP7 is equally expressed across tubule cell types yet preferentially secreted by cells of proximal tubule origin...
December 21, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27989801/molecular-checkpoint-decisions-made-by-subverted-vascular-niche-transform-indolent-tumor-cells-into-chemoresistant-cancer-stem-cells
#4
Zhongwei Cao, Joseph M Scandura, Giorgio G Inghirami, Koji Shido, Bi-Sen Ding, Shahin Rafii
Tumor-associated endothelial cells (TECs) regulate tumor cell aggressiveness. However, the core mechanism by which TECs confer stem cell-like activity to indolent tumors is unknown. Here, we used in vivo murine and human tumor models to identify the tumor-suppressive checkpoint role of TEC-expressed insulin growth factor (IGF) binding protein-7 (IGFBP7/angiomodulin). During tumorigenesis, IGFBP7 blocks IGF1 and inhibits expansion and aggresiveness of tumor stem-like cells (TSCs) expressing IGF1 receptor (IGF1R)...
January 9, 2017: Cancer Cell
https://www.readbyqxmd.com/read/27941714/inhibition-of-cervical-cancer-by-promoting-igfbp7-expression-using-ellagic-acid-from-pomegranate-peel
#5
Hongjun Guo, Dongya Zhang, Qingrui Fu
BACKGROUND The aim of this study was to explore the mechanism by which cervical cancer is inhibited by promoting IGFBP7 expression using ellagic acid from pomegranate peel extract. MATERIAL AND METHODS HeLa cells were divided into 6 groups: control group (NC), blank control group (BL), and IGFBP7 overexpression group (IGFBP7), and 2.5 uM, 5. 0 uM, and 10.0 uM ellagic acid-treated groups. The cell proliferation ability was detected and the degree of invasion in the 6 groups was measured by Transwell assay. The expression levels of IGFBP7 and AKT/mTOR in the 6 groups of cells were detected by RT-PCR technique...
December 12, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27930579/molecular-characteristics-of-colorectal-serrated-polyps-and-hyperplastic-polyps-a-strobe-compliant-article
#6
Otgontuya Sambuudash, Hee Man Kim, Hannah Jo, Hyun Sik Kim, Kyong Joo Lee, Hong Jun Park, Jae Woo Kim, Mee Yon Cho, Hyun-Soo Kim
The serrated neoplasia pathway of colorectal carcinogenesis is characterized by BRAF mutation and aberrant DNA methylation, which have not been reported on Korean patients. The aim of this study was to investigate BRAF mutation and DNA methylation in colorectal serrated polyps and the right colon.Between 2005 and 2013, 146 colon polyps (47 tubular adenomas [TAs], 53 traditional serrated adenomas [TSAs], 17 sessile serrated adenomas/polyps [SSAs], and 29 hyperplastic polyps in the proximal colon [PHPs]) were collected from patients...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27906719/diagnosis-of-cardiac-surgery-associated-acute-kidney-injury-from-functional-to-damage-biomarkers
#7
Wim Vandenberghe, Jorien De Loor, Eric A J Hoste
PURPOSE OF REVIEW: Acute kidney injury (AKI) occurs in up to 30% after cardiac surgery and is associated with adverse outcome. Currently, cardiac surgery-associated acute kidney injury (CSA-AKI) is diagnosed by Kidney Disease: Improving Global Outcomes criteria based on creatinine and urine output. To detect and treat AKI earlier, various biomarkers have been evaluated. This review addresses the current position of the two damage biomarkers neutrophil gelatinase-associated lipocalin (NGAL) and [TIMP-2] [IGFBP7] in clinical practice...
February 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/27850944/1308-accuracy-of-timp2-igfbp7-in-diagnosis-and-prognosis-of-acute-kidney-injury-a-systematic-review
#8
Ying Feng, Xiao Yang, Hui Zhou, Zhifeng Li, Zhiyong Peng, Jianguo Li
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27775181/comparison-of-telomere-length-and-insulin-like-growth-factor-binding-protein-7-promoter-methylation-between-breast-cancer-tissues-and-adjacent-normal-tissues-in-turkish-women
#9
Zehra Kaya, Mustafa Akkiprik, Sevgi Karabulut, Irem Peker, Gokce Gullu Amuran, Tolga Ozmen, Bahadır M Gulluoglu, Handan Kaya, Ayse Ozer
BACKGROUND: Both insulin-like growth factor-binding protein 7 (IGFBP7) and telomere length (TL) are associated with proliferation and senescence of human breast cancer. This study assessed the clinical significance of both TL and IGFBP7 methylation status in breast cancer tissues compared with adjacent normal tissues. We also investigated whether IGFBP7 methylation status could be affecting TL. METHODS: Telomere length was measured by quantitative PCR to compare tumors with their adjacent normal tissues...
October 24, 2016: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/27762075/sex-specific-linkage-scans-in-opioid-dependence
#10
Bao-Zhu Yang, Shizhong Han, Henry R Kranzler, Abraham A Palmer, Joel Gelernter
Sex influences risk for opioid dependence (OD). We hypothesized that sex might interact with genetic loci that influence the risk for OD. Therefore we performed an analysis to identify sex-specific genomic susceptibility regions for OD using linkage. Over 6,000 single nucleotide polymorphism (SNP) markers were genotyped for 1,758 African- and European-American (AA and EA) individuals from 739 families, ascertained via affected sib-pairs with OD and/or cocaine dependence. Autosomewide non-parametric linkage scans, stratified by sex and population, were performed...
October 20, 2016: American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics
https://www.readbyqxmd.com/read/27744089/insulin-like-growth-factor-binding-protein-7-as-a-biomarker-of-diastolic-dysfunction-and-functional-capacity-in%C3%A2-heart-failure-with-preserved-ejection%C3%A2-fraction-results-from-the-relax-trial
#11
Parul U Gandhi, Hanna K Gaggin, Margaret M Redfield, Horng H Chen, Susanna R Stevens, Kevin J Anstrom, Marc J Semigran, Peter Liu, James L Januzzi
OBJECTIVES: This study sought to investigate relationships between insulin-like growth factor-binding protein-7 (IGFBP7) and parameters of diastolic function or functional capacity in patients with heart failure and preserved ejection fraction (HFpEF) who were randomized to receive sildenafil or placebo. BACKGROUND: IGFBP7 was previously found to be associated with diastolic function in heart failure with reduced ejection fraction, but it is unclear whether these associations are present in HFpEF...
November 2016: JACC. Heart Failure
https://www.readbyqxmd.com/read/27716377/urine-biomarkers-give-early-prediction-of-acute-kidney-injury-and-outcome-after-out-of-hospital-cardiac-arrest
#12
Sigrid Beitland, Bård Endre Waldum-Grevbo, Espen Rostrup Nakstad, Jens-Petter Berg, Anne-Marie Siebke Trøseid, Berit Sletbakk Brusletto, Cathrine Brunborg, Geir Øystein Andersen, Kjetil Sunde
BACKGROUND: Post-resuscitation care after out-of-hospital cardiac arrest (OHCA) is challenging due to the threat of organ failure and difficult prognostication. Our aim was to examine whether urine biomarkers could give an early prediction of acute kidney injury (AKI) and outcome. METHODS: This was a prospective observational study of comatose OHCA patients at Oslo University Hospital Ullevål, Norway. Risk factors were clinical parameters and biomarkers measured in spot urine (cystatin C, neutrophil gelatinase-associated lipocalin (NGAL) and the product of tissue inhibitor of metalloproteinase 2 (TIMP-2) and insulin-like growth factor-binding protein 7 (IGFBP7)) at admission and day 3...
October 5, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27687550/a-to-i-rna-editing-of-the-igfbp7-transcript-increases-during-aging-in-porcine-brain-tissues
#13
Knud Larsen, Kaja Kjær Kristensen, Jamal Momeni, Leila Farajzadeh, Christian Bendixen
The IGFBP7 gene encodes insulin-like growth factor protein 7. IGFPB7 is involved in diverse biological functions including cell growth regulation, senescence and apoptosis, and also acts as a tumor suppressor in multiple cancers. The IGFBP7 mRNA is subject to A-to-I RNA editing mediated by adenosine deaminases acting on RNA 1 and 2 (ADAR1 and ADAR2). In the current study we have examined molecular characteristics of the porcine IGFBP7 gene, and determined the mRNA editing in different tissues. The A-to-I RNA editing of human IGFBP7 in positions Arg78 and Lys95 was shown to be conserved in the porcine homologue...
October 21, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27664182/effects-of-dietary-forage-and-calf-starter-on-ruminal-ph-and-transcriptomic-adaptation-of-the-rumen-epithelium-in-holstein-calves-during-the-weaning-transition
#14
Yo-Han Kim, Noriyuki Touji, Keiichiro Kizaki, Shiro Kushibiki, Toshihiro Ichijo, Shigeru Sato
We investigated the relationship between ruminal pH and transcriptomic adaptation of the rumen epithelium (RE) of calves fed calf starter with and without forage during the weaning transition. Holstein calves were assigned to groups fed calf starter either with forage (HAY group, n = 3) or without forage (CON group, n = 4). Ruminal pH was measured continuously, and rumen fluid and epithelium were collected 3 weeks after weaning. mRNA expression profiles of the RE were examined by one-color microarray. Differentially expressed genes (DEGs) were investigated using the ingenuity pathway analysis (IPA)...
September 23, 2016: Physiological Genomics
https://www.readbyqxmd.com/read/27634440/cell-cycle-arrest-as-a-therapeutic-target-of-acute-kidney-injury
#15
Wei-Gang Wang, Wei-Xia Sun, Bao-Shan Gao, Xin Lian, Hong-Lan Zhou
The current lack of complete understanding of the pathogenesis of acute kidney injury (AKI) is a significant barrier to its early diagnosis and treatment. Cell cycle arrest plays an important role in the protection of renal tubular epithelial cells and maladaptive repair following AKI. G1 phase cell arrest serves as a protective mechanism following AKI, avoiding replication of damaged DNA. Insulin-like growth factor-binding protein 7 (IGFBP7) and tissue inhibitor of metalloproteinase-2 (TIMP-2) are closely associated with G1 cell cycle arrest during the very early phase of cellular damage and can serve as an ideal biomarker to predict AKI...
September 15, 2016: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/27633989/somatic-stem-cell-differentiation-is-regulated-by-pi3k-tor-signaling-in-response-to-local-cues
#16
Marc Amoyel, Kenzo-Hugo Hillion, Shally R Margolis, Erika A Bach
Stem cells reside in niches that provide signals to maintain self-renewal, and differentiation is viewed as a passive process that depends on loss of access to these signals. Here, we demonstrate that the differentiation of somatic cyst stem cells (CySCs) in the Drosophila testis is actively promoted by PI3K/Tor signaling, as CySCs lacking PI3K/Tor activity cannot differentiate properly. We find that an insulin peptide produced by somatic cells immediately outside of the stem cell niche acts locally to promote somatic differentiation through Insulin-like receptor (InR) activation...
November 1, 2016: Development
https://www.readbyqxmd.com/read/27629121/alterations-in-the-proliferative-apoptotic-equilibrium-in-semen-of-adolescents-with-varicocele
#17
Larissa Berloffa Belardin, Paula Toni Del Giudice, Mariana Camargo, Paula Intasqui, Mariana Pereira Antoniassi, Ricardo Pimenta Bertolla, Agnaldo Pereira Cedenho
PURPOSE: To verify if the presence of varicocele (grades II and III) with and without seminal alterations, using the 5(th) centile cutoff values in table A1.1 of the World Health Organization (WHO, 2010) manual, alters the seminal plasma levels of proteins DNASE1 (deoxyribonuclease-1) and IGFBP7 (Insulin-like growth factor-binding protein 7), which are related to apoptosis regulation and cell proliferation, respectively, demonstrating that these proteins are important for correct spermatogenesis...
December 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27609347/early-prediction-of-acute-kidney-injury-after-transapical-and-transaortic-aortic-valve-implantation-with-urinary-g1-cell-cycle-arrest-biomarkers
#18
Fabian Dusse, Michaela Edayadiyil-Dudásova, Matthias Thielmann, Daniel Wendt, Philipp Kahlert, Ender Demircioglu, Heinz Jakob, Simon T Schaefer, Kevin Pilarczyk
BACKGROUND: Acute kidney injury (AKI) is a common complication following transcatheter aortic valve implantation (TAVI) leading to increased mortality and morbidity. Urinary G1 cell cycle arrest proteins TIMP-2 and IGFBP7 have recently been suggested as sensitive biomarkers for early detection of AKI in critically ill patients. However, the precise role of urinary TIMP-2 and IGFBP7 in patients undergoing TAVI is unknown. METHODS: In a prospective observational trial, 40 patients undergoing TAVI (either transaortic or transapical) were enrolled...
September 8, 2016: BMC Anesthesiology
https://www.readbyqxmd.com/read/27600085/protein-profiling-gastric-cancer-and-neighboring-control-tissues-using-high-content-antibody-microarrays
#19
Martin Sill, Christoph Schröder, Ying Shen, Aseel Marzoq, Radovan Komel, Jörg D Hoheisel, Henrik Nienhüser, Thomas Schmidt, Damjana Kastelic
In this study, protein profiling was performed on gastric cancer tissue samples in order to identify proteins that could be utilized for an effective diagnosis of this highly heterogeneous disease and as targets for therapeutic approaches. To this end, 16 pairs of postoperative gastric adenocarcinomas and adjacent non-cancerous control tissues were analyzed on microarrays that contain 813 antibodies targeting 724 proteins. Only 17 proteins were found to be differentially regulated, with much fewer molecules than the numbers usually identified in studies comparing tumor to healthy control tissues...
July 8, 2016: Microarrays
https://www.readbyqxmd.com/read/27474473/biomarkers-in-acute-kidney-injury-pathophysiological-basis-and-clinical-performance
#20
E V Schrezenmeier, J Barasch, K Budde, T Westhoff, K M Schmidt-Ott
Various biomarkers of acute kidney injury (AKI) have been discovered and characterized in the recent past. These molecules can be detected in urine or blood and signify structural damage to the kidney. Clinically, they are proposed as adjunct diagnostics to serum creatinine and urinary output to improve the early detection, differential diagnosis and prognostic assessment of AKI. The most obvious requirements for a biomarker include its reflection of the underlying pathophysiology of the disease. Hence, a biomarker of AKI should derive from the injured kidney and reflect a molecular process intimately connected with tissue injury...
July 30, 2016: Acta Physiologica
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