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https://www.readbyqxmd.com/read/29409593/roles-of-insulin-like-growth-factors-in-metamorphic-development-of-turbot-scophthalmus-maximus
#1
REVIEW
Yudong Jia
Larval turbot (Scophthalmus maximus) undergo metamorphosis, a late post-embryonic developmental event that precedes juvenile transition. Insulin-like growth factors (IGFs) are important endocrine/autocrine/paracrine factors that provide essential signals to control of the embryonic and postnatal development of vertebrate species, including fish. Accumulating evidence suggests that IGFs are involved in regulating the metamorphic development of flatfish. This mini review focus on the functions of all known IGFs (IGF-I and IGF-II) during the metamorphic development of turbot...
January 31, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29408008/takifugu-rubripes-cation-independent-mannose-6-phosphate-receptor-cloning-expression-and-functional-characterization-of-the-igf-ii-binding-domain
#2
A Ajith Kumar, Siva Kumar Nadimpalli
Mannose 6-phosphate/IGF-II receptor mediated lysosomal clearance of insulin like growth factor-II is significantly associated with the evolution of placental mammals. The protein is also referred to as the IGF-II receptor. Earlier studies suggested relatively low binding affinity between the receptor and ligand in prototherian and metatherian mammals. In the present study we cloned the IGF-II binding domain of the early vertebrate fugu fish and expressed it in bacteria. A 72000 Da truncated receptor containing the IGF-II binding domain was obtained...
January 30, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29402777/correlation-of-insulin-like-growth-factor-i-and-ii-concentrations-at-birth-measured-by-mass-spectrometry-and-growth-from-birth-to-two-months
#3
Colin P Hawkes, Deirdre M Murray, Louise C Kenny, Mairead Kiely, Jonathan O'B Hourihane, Alan D Irvine, Zengru Wu, Yair Argon, Richard E Reitz, Michael J McPhaul, Adda Grimberg
BACKGROUND: Immunoassays used to measure insulin-like growth factor (IGF)-I and -II concentrations are susceptible to interference from IGF-binding proteins. The aim of this study was to investigate the association of IGF-I and -II concentrations at birth with neonatal anthropometry using a liquid chromatography/mass spectrometry (LCMS) assay. METHODS: LCMS was used to measure IGF-I and -II concentrations in umbilical cord blood of term, healthy infants enrolled in the Cork BASELINE Birth Cohort Study...
January 18, 2018: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/29331388/e4bp4-inhibits-angii-induced-apoptosis-in-h9c2-cardiomyoblasts-by-activating-the-pi3k-akt-pathway-and-promoting-calcium-uptake
#4
Bih-Cheng Chen, Marthandam Asokan Shibu, Chia-Hua Kuo, Chia-Yao Shen, Shu Nu Chang-Lee, Chao-Hung Lai, Ray-Jade Chen, Chun-Hsu Yao, Vijaya Padma Viswanadha, Jian-Shen Liu, Wei-Kung Chen, Chih-Yang Huang
The bZIP transcription factor E4BP4 is a survival factor that is known to be elevated in diseased heart and promote cell survival. In this study the role of E4BP4 on angiotensin-II (AngII)-induced apoptosis has been examined in in vitro cell model. H9c2 cardiomyoblast cells that overexpressed E4BP4 were exposed to AngII to observe the cardio-protective effects of E4BP4 on hypertension related apoptosis. The results from TUNEL assays revealed that E4BP4 significantly attenuated AngII-induced apoptosis. Further analysis by Western blot and RT-PCR showed that E4BP4 inhibited AngII-induced IGF-II mRNA expression and cleavage of caspase-3 through the PI3K-Akt pathway...
January 10, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29311590/vitamin-a-and-e-nutritional-status-in-relation-to-leptin-adiponectin-igf-i-and-igf-ii-in-early-life-a-birth-cohort-study
#5
Qinwen Du, Zhong-Cheng Luo, Anne Monique Nuyt, Francois Audibert, Pierre Julien, Shu-Qin Wei, Dan-Li Zhang, William Fraser, Emile Levy
The metabolic health effects of vitamin A and E nutritional status in early life are largely unknown. We assessed whether vitamin A and vitamin E nutritional status may affect circulating leptin, adiponectin, insulin-like growth factor (IGF)-I and IGF-II levels in early life in humans. In a singleton birth cohort (n = 248), vitamin A and E nutritional status in fetuses/newborns were assessed by cord plasma concentrations of retinol, β-carotene, α- and γ-tocopherols. The primary outcomes were cord plasma leptin, adiponectin, IGF-I and IGF-II concentrations...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29277338/hypothalamic-abnormalities-growth-failure-due-to-defects-of-the-ghrh-receptor
#6
Manuel H Aguiar-Oliveira, Caridad Davalos, Viviane C Campos, Luiz A Oliveira Neto, Cindi G Marinho, Carla R P Oliveira
Several acquired or congenital hypothalamic abnormalities may cause growth failure (GF). We described two of these congenital abnormalities. First, a case of CHARGE syndrome, an epigenetic disorder mostly caused by heterozygous mutations in the gene encoding CHD7, a chromatin remodeling protein, causing several malformations, some life-threatening, with additional secondary hypothalamus-hypophyseal dysfunction, including GF. Second, a cohort of individuals with genetic isolated severe GH deficiency (IGHD), due to a homozygous mutation in the GH-releasing hormone (GHRH) receptor gene described in Itabaianinha County, in northeast Brazil...
December 20, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29250665/the-correlation-between-insulin-like-growth-factor-with-glycemic-control-glomerular-filtration-rate-blood-pressure-hematological-changes-or-body-mass-index-in-patients-with-type-2-diabetes-mellitus
#7
Marius Cristian NeamŢu, Elena Taina Avramescu, Iulia Rahela Marcu, Adina Turcu-Ştiolică, Mihail Virgil Boldeanu, Oana Maria NeamŢu, Ştefania Tudorache, Rucsandra Elena Dănciulescu Miulescu
Insulin-like growth factor (IGF) family is made up of two polypeptides, IGF-I and IGF-II, six specific binding proteins (IGFBPs 1-6) and specific receptors. IGF-I is involved in the regulation of growth and cellular proliferation and has a similar structure to insulin. The major IGF transport function is attributed to IGFBP-3. Some studies have highlighted the association between IGF and diabetes. The aims of this study were to analyze the correlation between IGF with glycemic control, glomerular filtration rate (GFR), blood pressure, hematological changes or body mass index (BMI) in patients with type 2 diabetes mellitus (T2DM)...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/29245946/mir-483-5p-promotes-igf-ii-transcription-and-is-associated-with-poor-prognosis-of-hepatocellular-carcinoma
#8
Shaohui Tang, Yanfang Chen, Shufen Feng, Tingzhuang Yi, Xuyou Liu, Qiang Li, Zhilong Liu, Cuiping Zhu, Jianjun Hu, Xi Yu, Min Wang, Guoli Cao, Hui Tang, Caiqun Bie, Feng Ma, Huijun Tang, Gang Du, Jianwei Huang
The human insulin-like growth factor-II (IGF-II) gene transcribes four mRNAs (P1 mRNA-P4 mRNA), and P3 mRNA overexpression contributes to hepatocarcinogenesis. IGF-II-derived miR-483-5p is implicated in the development of cancers. Here, we investigated the involvement of miR-483-5p in P3 mRNA overexpression regulation and its role in hepatocellular carcinoma. Our results showed that miR-483-5p up-regulated P3 mRNA transcription by targeting the 5'-untranslated region (5'UTR) of P3 mRNA in hepatocellular carcinoma...
November 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/29233839/genetics-of-tumors-of-the-adrenal-cortex
#9
Fidéline Bonnet-Serrano, Jerome Bertherat
This review describes the molecular alterations observed in the various types of tumors of the adrenal cortex, excluding Conn adenomas, especially the alterations identified by genomic approaches these last five years. Two main forms of bilateral adrenocortical tumors can be distinguished according to size and aspect of the nodules: primary pigmented nodular adrenal disease (PPNAD) which can be sporadic or part of Carney complex, and primary bilateral macro nodular adrenal hyperplasia (PBMAH). The bilateral nature of tumors suggests the existence of an underlying genetic predisposition...
December 12, 2017: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29217683/insulin-like-growth-factor-ii-targets-the-mtor-pathway-to-reverse-autism-like-phenotypes-in-mice
#10
Adam B Steinmetz, Sarah A Stern, Amy S Kohtz, Giannina Descalzi, Cristina M Alberini
Autism spectrum disorder (ASD) is a developmental disability characterized by impairments in social interaction and repetitive behavior, and is also associated with cognitive deficits. There is no current treatment that can ameliorate most of the ASD symptomatology; thus, identifying novel therapies is urgently needed. We used male BTBR T+Itpr3tf /J (BTBR) mice, a model that reproduces most of the core behavioral phenotypes of ASD, to test the effects of systemic administration of insulin-like growth factor II (IGF-II), a polypeptide that crosses the blood-brain barrier and acts as a cognitive enhancer...
January 24, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29201918/the-role-of-insulin-receptor-isoforms-in-diabetes-and-its-metabolic-and-vascular-complications
#11
REVIEW
O Escribano, N Beneit, C Rubio-Longás, A R López-Pastor, A Gómez-Hernández
The insulin receptor (IR) presents by alternative splicing two isoforms: IRA and IRB. The differential physiological and pathological role of both isoforms is not completely known, and it is determinant the different binding affinity for insulin-like growth factor. IRB is more abundant in adult tissues and it exerts mainly the metabolic actions of insulin, whereas IRA is mainly expressed in fetal and prenatal period and exerts mitogenic actions. However, the change in the expression profile of both IR isoforms and its dysregulation are associated with the development of different pathologies, such as cancer, insulin resistance, diabetes, obesity, and atherosclerosis...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29175438/gestational-3-3-4-4-5-pentachlorobiphenyl-pcb-126-exposure-disrupts-fetoplacental-unit-fetal-thyroid-cytokines-dysfunction
#12
R G Ahmed
Exposure to polychlorinated biphenyls (PCBs) is related to several endocrine disorders. This study examined the effect of maternal exposure of 3,3',4,4',5-pentachlorobiphenyl (PCB 126) on the fetoplacental unit and fetal thyroid-cytokine axis during the pregnancy. Pregnant albino rats received PCB 126 (20 or 40μg/kgb.wt.) by oral gavage from gestation day (GD) 1 to 20. Potential effects of PCB 126 were evaluated by following the histopathological changes in the placenta by Haematoxylin and Eosin (H&E) stain and measuring the maternofetal thyroid axis (ELIZA), maternofetal body weight, and fetal growth markers (ELIZA), and cytokines (ELIZA) at embryonic day (ED) 20...
November 21, 2017: Life Sciences
https://www.readbyqxmd.com/read/29113829/increased-motor-neuron-resilience-by-small-molecule-compound-that-regulate-igf-ii-expression
#13
Teresia M Osborn, Jonathan Beagan, Ole Isacson
The selective vulnerability of motor neurons in amyotrophic lateral sclerosis (ALS) is evident by sparing of a few subpopulations during this fast progressing and debilitating degenerative disease. By studying the gene expression profile of resilient vs. vulnerable motor neuron populations we can gain insight in what biomolecules and pathways may contribute to the resilience and vulnerability. Several genes have been found to be differentially expressed in the vulnerable motor neurons of the cervical spinal cord as compared to the spared motor neurons in CN3/4...
November 4, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/29112114/role-of-scaffold-protein-proline-glutamic-acid-and-leucine-rich-protein-1-pelp1-in-the-modulation-of-adrenocortical-cancer-cell-growth
#14
Arianna De Luca, Paola Avena, Rosa Sirianni, Adele Chimento, Francesco Fallo, Catia Pilon, Ivan Casaburi, Vincenzo Pezzi
PELP1 acts as an estrogen receptor (ER) coactivator that exerts an essential role in the ER's functions. ER coregulators have a critical role in the progression and response to hormonal treatment of estrogen-dependent tumors. We previously demonstrated that, in adrenocortical carcinoma (ACC), ERα is upregulated and that estradiol activates the IGF-II/IGF1R signaling pathways defining the role of this functional cross-talk in H295R ACC cell proliferation. The aim of this study was to determine if PELP1 is expressed in ACC and may play a role in promoting the interaction between ERα and IGF1R allowing the activation of pathways important for ACC cell growth...
November 7, 2017: Cells
https://www.readbyqxmd.com/read/28972999/effects-of-insulin-like-growth-factors-on-early-embryonic-chick-limb-myogenesis
#15
Rabeea Hazim Mohammed, Helen Anderton, John Michael Brameld, Dylan Sweetman
Limb muscles derive from pax3 expressing precursor cells that migrate from the hypaxial somite into the developing limb bud. Once there they begin to differentiate and express muscle determination genes such as MyoD. This process is regulated by a combination of inductive or inhibitory signals including Fgf18, retinoic acid, HGF, Notch and IGFs. IGFs are well known to affect late stages of muscle development and to promote both proliferation and differentiation. We examined their roles in early stage limb bud myogenesis using chicken embryos as an experimental model...
2017: PloS One
https://www.readbyqxmd.com/read/28939196/molecular-identification-of-an-insulin-growth-factor-binding-protein-igfbp-and-its-potential-role-in-an-insulin-like-peptide-system-of-the-pearl-oyster-pinctada-fucata
#16
Hua Zhang, Yu Shi, Maoxian He
Insulin-like growth factors (IGFs) play critical roles in regulating metabolism, growth, and reproduction in invertebrates. IGF binding proteins (IGFBPs) serve as major regulators of IGF activity and regulate endocrine system. In the present study, the full-length cDNA of an igfbp was identified from the pearl oyster, Pinctada fucata, using expressed sequence tag (EST) sequence. The 1124bp Pfigfbp cDNA contains a 465bp open reading frame (ORF) encoding a putative protein of 154 amino acids, a 5'-untranslated region (UTR) of 238bp, and a 3'-UTR of 394bp (not including polyA+)...
December 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28934637/igf-system-targeted-therapy-therapeutic-opportunities-for-ovarian-cancer
#17
REVIEW
J A L Liefers-Visser, R A M Meijering, A K L Reyners, A G J van der Zee, S de Jong
The insulin-like growth factor (IGF) system comprises multiple growth factor receptors, including insulin-like growth factor 1 receptor (IGF-1R), insulin receptor (IR) -A and -B. These receptors are activated upon binding to their respective growth factor ligands, IGF-I, IGF-II and insulin, and play an important role in development, maintenance, progression, survival and chemotherapeutic response of ovarian cancer. In many pre-clinical studies anti-IGF-1R/IR targeted strategies proved effective in reducing growth of ovarian cancer models...
November 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28928383/human-stem-cells-alter-the-invasive-properties-of-somatic-cells-via-paracrine-activation-of-mtorc1
#18
Margit Rosner, Ha Thi Thanh Pham, Richard Moriggl, Markus Hengstschläger
Controlled invasion is essential during many physiological processes, whereas its deregulation is a hallmark of cancer. Here we demonstrate that embryonic, induced pluripotent and amniotic fluid stem cells share the property to induce the invasion of primary somatic cells of various origins through insulin-like growth factor I (IGF-I)- or II (IGF-II)-mediated paracrine activation of mechanistic target of rapamycin complex 1 (mTORC1). We propose a model in which downstream of mTORC1 this stem cell-induced invasion is mediated by hypoxia-inducible factor 1-alpha (HIF-1α)-regulated matrix metalloproteinases...
September 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28927688/effects-of-dietary-hawthorn-extract-on-growth-performance-immune-responses-growth-and-immune-related-genes-expression-of-juvenile-golden-pompano-trachinotus-ovatus-and-its-susceptibility-to-vibrio-harveyi-infection
#19
Xiaohong Tan, Zhenzhu Sun, Zhong Huang, Chuanpeng Zhou, Heizhao Lin, Lianjie Tan, Pengwei Xun, Qian Huang
The present study was conducted to investigate the effects of dietary hawthorn extract (HTE) supplementation on growth performance, immune responses, hepatic antioxidant abilities, growth- and immune-related and heat shock protein genes expression and resistance to the pathogen Vibrio harveyi in Trachinotus ovatus. A basal diet supplemented with HTE at 0 (Diet 1), 0.50 (Diet 2), 1.00 (Diet 3), 2.00 (Diet 4), 4.00 (Diet 5) and 10.00 (Diet 6) g kg(-1) were fed to golden pompano for 8 weeks. The highest final body weight, weight gain rate, specific growth rate, feed efficiency ratio and protein efficiency rate were observed in fish fed Diet 2 (P < 0...
September 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28912305/effects-of-liraglutide-on-weight-loss-fat-distribution-and-%C3%AE-cell-function-in-obese-subjects-with-prediabetes-or-early-type-2-diabetes
#20
Francesca Santilli, Paola G Simeone, Maria T Guagnano, Marika Leo, Marica T Maccarone, Augusto Di Castelnuovo, Cristina Sborgia, Riccardo C Bonadonna, Ermanno Angelucci, Virginia Federico, Stefano Cianfarani, Lamberto Manzoli, Giovanni Davì, Armando Tartaro, Agostino Consoli
OBJECTIVE: Obesity is associated with an increased risk of type 2 diabetes and cardiovascular complications. The risk depends significantly on adipose tissue distribution. Liraglutide, a glucagon-like peptide 1 analog, is associated with weight loss, improved glycemic control, and reduced cardiovascular risk. We determined whether an equal degree of weight loss by liraglutide or lifestyle changes has a different impact on subcutaneous adipose tissue (SAT) and visceral adipose tissue (VAT) in obese subjects with prediabetes or early type 2 diabetes...
November 2017: Diabetes Care
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