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https://www.readbyqxmd.com/read/28505164/human-decellularized-bone-scaffolds-from-aged-donors-show-improved-osteoinductive-capacity-compared-to-young-donor-bone
#1
Christopher A Smith, Tim N Board, Paul Rooney, Mark J Eagle, Stephen M Richardson, Judith A Hoyland
To improve the safe use of allograft bone, decellularization techniques may be utilized to produce acellular scaffolds. Such scaffolds should retain their innate biological and biomechanical capacity and support mesenchymal stem cell (MSC) osteogenic differentiation. However, as allograft bone is derived from a wide age-range, this study aimed to determine whether donor age impacts on the ability an osteoinductive, acellular scaffold produced from human bone to promote the osteogenic differentiation of bone marrow MSCs (BM-MSC)...
2017: PloS One
https://www.readbyqxmd.com/read/28402555/deregulation-of-the-endometrial-stromal-cell-secretome-precedes-embryo-implantation-failure
#2
Ruban Rex Peter Durairaj, Asma Aberkane, Lukasz Polanski, Yojiro Maruyama, Miriam Baumgarten, Emma S Lucas, Siobhan Quenby, Jerry K Y Chan, Nick Raine-Fenning, Jan J Brosens, Hilde Van de Velde, Yie Hou Lee
STUDY QUESTION: Is implantation failure following ART associated with a perturbed decidual response in endometrial stromal cells (EnSCs)? SUMMARY ANSWER: Dynamic changes in the secretome of decidualizing EnSCs underpin the transition of a hostile to a supportive endometrial microenvironment for embryo implantation; perturbation in this transitional pathway prior to ART is associated with implantation failure. WHAT IS KNOWN ALREADY: Implantation is the rate-limiting step in ART, although the contribution of an aberrant endometrial microenvironment in IVF failure remains ill defined...
April 10, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28316362/association-of-circulating-igfbp1-level-with-the-severity-of-coronary-artery-lesions-in-patients-with-unstable-angina
#3
Wei Zheng, Yayu Lai, Peng Jin, Wenzhu Gu, Qi Zhou, Xiaojing Wu
Aims. Local IGFBP1 level was reported to affect the development of coronary artery plaque. This study investigated the association of circulating IGFBP1 level with the severity of coronary artery lesions in patients with unstable angina. Materials and Methods. In 112 consecutive patients with clinically diagnosed unstable angina, admitted from July 2014 to July 2015, we studied the correlations of circulating IGFBP1 and the severity of coronary artery disease (CAD). Results. All patients underwent scheduled coronary angiography, and 67 cases were diagnosed with critical and 45 with noncritical CAD...
2017: Disease Markers
https://www.readbyqxmd.com/read/28238777/up-regulation-of-igf-1-in-the-frontal-cortex-of-piglets-exposed-to-an-environmentally-enriched-arena
#4
Sarah M Brown, Rebecca Peters, Alistair B Lawrence
Environmental enrichment (EE) is widely used in the life sciences to study effects of environment on the brain. In pigs, despite lack of EE being a key welfare issue there is little understanding of brain effects of EE in pigs. This project aimed to study the effects of exposure to an EE arena on piglet behaviours and on brain gene expression levels with a focus on IGF-1 and related genes. Eight litters of large white×landrace×Hampshire piglets were farrowed and raised in a free farrowing system (PigSAFE)...
May 1, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28226203/characteristic-changes-in-decidual-gene-expression-signature-in-spontaneous-term-parturition
#5
Haidy El-Azzamy, Andrea Balogh, Roberto Romero, Yi Xu, Christopher LaJeunesse, Olesya Plazyo, Zhonghui Xu, Theodore G Price, Zhong Dong, Adi L Tarca, Zoltan Papp, Sonia S Hassan, Tinnakorn Chaiworapongsa, Chong Jai Kim, Nardhy Gomez-Lopez, Nandor Gabor Than
BACKGROUND: The decidua has been implicated in the "terminal pathway" of human term parturition, which is characterized by the activation of pro-inflammatory pathways in gestational tissues. However, the transcriptomic changes in the decidua leading to terminal pathway activation have not been systematically explored. This study aimed to compare the decidual expression of developmental signaling and inflammation-related genes before and after spontaneous term labor in order to reveal their involvement in this process...
May 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28214826/emodin-increases-expression-of-insulin-like-growth-factor-binding-protein-1-through-activation-of-mek-erk-ampk%C3%AE-and-interaction-of-ppar%C3%AE-and-sp1-in-lung-cancer
#6
Qing Tang, JingJing Wu, Fang Zheng, Swei Sunny Hann, YuQing Chen
BACKGROUND: Emodin has anti-neoplastic activities on multiple tumors. However, the molecular mechanisms underlying this effect still remain to be fully understood. METHODS: Cell viability and cell cycle distribution were measured using 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assays and flow cytometry, respectively. Cell invasion and migration were examined by transwell invasion and wound healing assays. Western blot analysis was performed to examine the phosphorylation and protein expression of AMP-activated protein kinase alpha (AMPKα), extracellular signaling-regulated kinase 1/2 (ERK1/2), peroxisome proliferators-activated receptor gamma (PPARγ), insulin-like growth factor (IGF) binding protein 1 (IGFBP1) and the transcription factor Sp1...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28197637/inhibition-of-fasn-suppresses-migration-invasion-and-growth-in-hepatoma-carcinoma-cells-by-deregulating-the-hif-1%C3%AE-igfbp1-pathway
#7
Jiaojiao Gong, Shasha Shen, Yixuan Yang, Si Qin, Lifan Huang, Hongmin Zhang, Ling Chen, Yaqin Chen, Shiying Li, Sha She, Min Yang, Hong Ren, Huaidong Hu
Hepatocellular carcinoma is the second most common cause of cancer-related deaths worldwide. Due to a high propensity to metastasize, active angiogenesis and rapid proliferation, recurrence and poor prognosis are major obstacles for treatment and cure of this disease. However, the detailed mechanisms of how fatty acid synthase (FASN) promotes migration, invasion and healing in tumor cells remain unclear. In the present study, the previous results that FASN was expressed higher in cancer samples than in non-cancerous samples, and influenced migration, invasion of hepatoma carcinoma cells, were verified by immunohistochemistry, tissue microarrays, Transwell assay and wound healing assay...
March 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28135285/dysregulation-of-in-vitro-decidualization-of-human-endometrial-stromal-cells-by-insulin-via-transcriptional-inhibition-of-forkhead-box-protein-o1
#8
Dorina Ujvari, Ivika Jakson, Shabnam Babayeva, Daniel Salamon, Bence Rethi, Sebastian Gidlöf, Angelica Lindén Hirschberg
Insulin resistance and compensatory hyperinsulinemia are characteristic features of obesity and polycystic ovary syndrome, and both are associated with reduced fertility and implantation. There is little knowledge about the effect of insulin on the decidualization process and previous findings are contradictory. We investigated the effect of insulin on the regulation of forkhead box protein O1 (FOXO1), one of the most important transcription factors during decidualization. Endometrial stromal cells were isolated from six healthy, regularly menstruating women and decidualized in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28125591/maternal-pre-pregnancy-obesity-is-associated-with-altered-placental-transcriptome
#9
Signe Altmäe, Maria Teresa Segura, Francisco J Esteban, Sabine Bartel, Pilar Brandi, Martin Irmler, Johannes Beckers, Hans Demmelmair, Carmen López-Sabater, Berthold Koletzko, Susanne Krauss-Etschmann, Cristina Campoy
Maternal obesity has a major impact on pregnancy outcomes. There is growing evidence that maternal obesity has a negative influence on placental development and function, thereby adversely influencing offspring programming and health outcomes. However, the molecular mechanisms underlying these processes are poorly understood. We analysed ten term placenta's whole transcriptomes in obese (n = 5) and normal weight women (n = 5), using the Affymetrix microarray platform. Analyses of expression data were carried out using non-parametric methods...
2017: PloS One
https://www.readbyqxmd.com/read/28103909/potential-diagnostic-biomarkers-for-chronic-kidney-disease-of-unknown-etiology-ckdu-in-sri-lanka-a-pilot-study
#10
Saravanabavan Sayanthooran, Dhammika N Magana-Arachchi, Lishanthe Gunerathne, Tilak Abeysekera
BACKGROUND: In Sri Lanka, there exists chronic kidney disease of both known (CKD) and unknown etiologies (CKDu). Identification of novel biomarkers that are customized to the specific causative factors would lead to early diagnosis and clearer prognosis of the diseases. This study aimed to find genetic biomarkers in blood to distinguish and identify CKDu from CKD as well as healthy populations from CKDu endemic and non-endemic areas of Sri Lanka. METHODS: The expression patterns of a selected panel of 12 potential genetic biomarkers were analyzed in blood using RT-qPCR...
January 19, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28090803/insulin-like-growth-factor-binding-protein-2-in-bipolar-disorder-an-expression-study-in-peripheral-tissues
#11
Elena Milanesi, Roberta Zanardini, Gianluca Rosso, Giuseppe Maina, Alessandro Barbon, Cristina Mora, Alessandra Minelli, Massimo Gennarelli, Luisella Bocchio-Chiavetto
OBJECTIVES: Insulin-like Growth Factor Binding Protein 2 (IGFBP2) is a member of the family of high-affinity binding proteins (IGFBP1-6) and appears to play a governing role in Insulin-like Growth Factor (IGF) regulation in the central nervous system. This study aimed to investigate the putative involvement of IGFBP2 in mood disorder pathogenesis by measuring its expression levels in patient peripheral tissues. METHODS: IGFBP2 protein and mRNA levels were measured in the serum of 93 controls, 41 Bipolar Disorder (BD) and 43 Major Depressive Disorder (MDD) patients and in the skin fibroblasts from 15 controls, 12 BD and 23 MDD patients...
January 16, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/28051155/loss-of-mir-542-3p-enhances-igfbp-1-expression-in-decidualizing-human-endometrial-stromal-cells
#12
Hideno Tochigi, Takeshi Kajihara, Yosuke Mizuno, Yumi Mizuno, Shunsuke Tamaru, Yoshimasa Kamei, Yasushi Okazaki, Jan J Brosens, Osamu Ishihara
Endometrial decidualization represents an essential step for the successful implantation of the embryo; however, the molecular mechanism behind this differentiation process remains unclear. This study aimed to identify novel microRNAs (miRNAs) involved in the regulation of decidual gene expression in human endometrial stromal cells (HESCs). An in vitro analysis of primary undifferentiated and decidualizing HESCs was conducted. HESCs were isolated from hysterectomy specimens from normally cycling premenopausal women with uterine fibroids, who were not on hormonal treatment at the time of surgery...
January 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/27929184/a-comparison-of-rs4-type-resistant-starch-to-rs2-type-resistant-starch-in-suppressing-oxidative-stress-in-high-fat-diet-induced-obese-rats
#13
Xu Si, Zhongkai Zhou, Padraig Strappe, Chris Blanchard
The anti-obesity effects of two types of resistant starch (RS) in high-fat-diet-induced obese rats were investigated. The serum triglycerides, total cholesterol and malondialdehyde concentrations were significantly reduced, and the total antioxidant capacity, superoxide dismutase levels and glutathione peroxidase activity were increased by RS2 and RS4 consumption compared to the obesity group. A significant reduction in the serum glucose level and elevations in hepatic lipid metabolic enzyme activities were observed only for RS4 administration...
December 8, 2016: Food & Function
https://www.readbyqxmd.com/read/27863277/vitamin-d-supplementation-affects-the-igf-system-in-men-after-acute-exercise
#14
Rachel L Darr, Kathleen J Savage, Mark Baker, Gregory E Wilding, Amy Raswalsky, Todd Rideout, Richard W Browne, Peter J Horvath
OBJECTIVE: Contradictory data between the Insulin-Like Growth Factor System (IGF) system and exercise may be due to alteration in IGF binding proteins. Vitamin D (D) deficiency has been related to muscle weakness and Insulin Like Growth Factor Binding Protein 3 (IGFBP3). A Vit. D and acute exercise merge is proposed to modify the IGF system. DESIGN: D insufficient and deficient men (39.0±8.6yo with serum D (25OH D) 20.0±7.7ng/mL) did 1h of stretching (ST), aerobic (AB), and resistance (RT) exercises, before and after 28d of 4000IU/d Vit...
October 2016: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/27834463/gene-expression-profile-of-renal-cell-carcinomas-after-neoadjuvant-treatment-with-sunitinib-new-pathways-revealed
#15
Carlos Dzik, Sabrina T Reis, Nayara I Viana, Glauber Brito, Isis Paloppi, Willian Nahas, Miguel Srougi, Katia R M Leite
BACKGROUND: In renal cell carcinoma (RCC) of the clear cell type, inactivity of the VHL gene induces overexpression of HIF1 α and its targets, the tyrosine kinase receptors, promoting RCC development and progression. The discovery of tyrosine kinase inhibitors (TKIs) changed the treatment of these tumors. Other molecular pathways involved in the TKI mechanisms of action have not been described in the literature. The aim of our study was to elucidate alternative mechanisms of action of sunitinib in tumor tissue after neoadjuvant treatment of RCC...
May 4, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/27795999/effects-of-the-insulin-like-growth-factor-pathway-on-the-regulation-of-mammary-gland-development
#16
REVIEW
Woo Tae Ha, Ha Yeon Jeong, Seung Yoon Lee, Hyuk Song
The insulin-like growth factor (IGF) pathway is a key signal transduction pathway involved in cell proliferation, migration, and apoptosis. In dairy cows, IGF family proteins and binding receptors, including their intracellular binding partners, regulate mammary gland development. IGFs and IGF receptor interactions in mammary glands influence the early stages of mammogenesis, i.e., mammary ductal genesis until puberty. The IGF pathway includes three major components, IGFs (such as IGF-I, IGF-II, and insulin), their specific receptors, and their high-affinity binding partners (IGF binding proteins [IGFBPs]; i...
September 2016: Balsaeng'gwa Saengsig
https://www.readbyqxmd.com/read/27696687/phosphatidic-acid-induces-decidualization-by-stimulating-akt-pp2a-binding-in-human-endometrial-stromal-cells
#17
So Young Lee, Yun Young Lee, Joong Sub Choi, Mee-Sup Yoon, Joong-Soo Han
Decidualization of human endometrial stromal cells (hESCs) is crucial for successful uterine implantation and maintaining pregnancy. We previously reported that phospholipase D1 (PLD1) is required for cAMP-induced decidualization of hESCs. However, the mechanism by which phosphatidic acid (PA), the product of PLD1 action, might regulate decidualization is not known. We confirmed that PA induced decidualization of hESCs by observing morphological changes and measuring increased levels of decidualization markers such as IGFBP1 and prolactin transcripts (P < 0...
November 2016: FEBS Journal
https://www.readbyqxmd.com/read/27628219/low-body-mass-index-in-endometriosis-is-promoted-by-hepatic-metabolic-gene-dysregulation-in-mice
#18
Laura G Goetz, Ramanaiah Mamillapalli, Hugh S Taylor
The gynecological disease endometriosis is characterized by the deposition and proliferation of endometrial cells outside the uterus and clinically is linked to low body mass index (BMI). Gene expression in the liver of these women has not been reported. We hypothesized that endometriosis may impact hepatic gene expression, promoting a low BMI. To determine the effect of endometriosis on liver gene expression, we induced endometriosis in female mice by suturing donor mouse endometrium into the peritoneal cavity and measuring the weight of these mice...
December 2016: Biology of Reproduction
https://www.readbyqxmd.com/read/27628217/igfbp1-involved-in-the-decreased-birth-weight-due-to-fetal-high-estrogen-exposure-in-mice
#19
Min Jin, Ping-Ping Lv, Tian-Tian Yu, Jin-Ming Shen, Chun Feng, He-Feng Huang
Our previous study indicated that maternal high estrogen environment in the first trimester is correlated with increased risks of low birth weight (LBW) and adult diseases. The present study aimed to establish an animal model to confirm such an effect in mice; and to further explore 5 the mechanism involved. A mouse model with high estradiol (E2) exposure during early pregnancy was established, and the birth weight, growth after birth, and expression levels of insulin-like growth factor binding protein 1 (IGFBP1) of pups were examined, respectively...
September 14, 2016: Biology of Reproduction
https://www.readbyqxmd.com/read/27619487/transcriptional-regulation-of-genes-involved-in-retinoic-acid-metabolism-in-senegalese-sole-larvae
#20
Anaïs Boglino, Marian Ponce, Xavier Cousin, Enric Gisbert, Manuel Manchado
The aim of this study was the characterization of transcriptional regulatory pathways mediated by retinoic acid (RA) in Senegalese sole larvae. For this purpose, pre-metamorphic larvae were treated with a low concentration of DEAB, an inhibitor of RALDH enzyme, until the end of metamorphosis. No differences in growth, eye migration or survival were observed. Nevertheless, gene expression analysis revealed a total of 20 transcripts differentially expressed during larval development and only six related with DEAB treatments directly involved in RA metabolism and actions (rdh10a, aldh1a2, crbp1, igf2r, rarg and cyp26a1) to adapt to a low-RA environment...
January 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
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