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https://www.readbyqxmd.com/read/29922232/the-role-of-the-insulin-like-growth-factor-1-pathway-in-immune-tumor-microenvironment-and-its-clinical-ramifications-in-gynecologic-malignancies
#1
Muna Alemi Yahya, Shilhav Meisel Sharon, Shay Hantisteanu, Mordechai Hallak, Ilan Bruchim
Treatment of patients with gynecologic malignancies diagnosed at advanced stages remains a therapeutic challenge. Survival rates of these patients remain significantly low, despite surgery and chemotherapy. Advances in understanding the role of the immune system in the pathogenesis of cancer have led to the rapid evolution of immunotherapeutic approaches. Immunotherapeutic strategies, including targeting specific immune checkpoints, as well as dendritic cell (DC) immunotherapy are being investigated in several malignancies, including gynecological cancers...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29797700/l-citrulline-supplementation-increased-skeletal-muscle-pgc-1%C3%AE-expression-is-associated-with-exercise-performance-and-increased-skeletal-muscle-weight
#2
Myra O Villareal, Toshiya Matsukawa, Hiroko Isoda
SCOPE: L-citrulline has recently been reported as a more effective supplement for promoting intracellular NO production compared to L-arginine. Here, the effect of L-citrulline on skeletal muscle and its influence on exercise performance were investigated. The underlying mechanism of its effect, specifically on the expression of skeletal muscle peroxisome proliferator-activated receptor-gamma coactivator-1α (PGC-1α), was also elucidated. METHODS AND RESULTS: Six-week-old ICR mice were orally supplemented with L-citrulline (250 mg kg-1 ) daily, and their performance in weight-loaded swimming exercise every other day for 15 days, was evaluated...
May 24, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29778102/effects-of-extending-the-length-of-pro-oestrus-in-an-oestradiol-and-progesterone-based-oestrus-synchronisation-program-on-ovarian-function-uterine-environment-and-pregnancy-establishment-in-beef-heifers
#3
J J de la Mata, R Núñez-Olivera, F Cuadro, D Bosolasco, V de Brun, A Meikle, G A Bó, A Menchaca
The aim of the present study was to investigate the effects of a strategy for extending pro-oestrus (the interval between luteolysis and ovulation) in an oestrus synchronisation protocol (named J-Synch) in beef heifers on follicular growth, sexual steroid concentrations, the oestrogen receptor ERα and progesterone receptors (PR) in the uterus, insulin-like growth factor (IGF) 1 and pregnancy rates. In Experiment 1, heifers treated with the new J-Synch protocol had a longer pro-oestrus period than those treated with the conventional protocol (mean (±s...
May 21, 2018: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29754009/dietary-nitrogen-and-calcium-modulate-cyp27b1-expression-in-young-goats
#4
M R Wilkens, K Elfers, M Schmicke, G Breves, A S Muscher-Banse
In livestock, feeding a reduced nitrogen (N) diet is favored for economic and ecological reasons. Ruminants cope more easily with a reduced N diet than monogastric species. However, changes in mineral homeostasis such as a reduction in 1,25-dihydroxyvitamin D3 (1,25-(OH)2 D3 ) concentrations, calcium (Ca), and IGF1 levels were observed in goats kept on a reduced N diet. The decrease in 1,25-(OH)2 D3 occurred even during a simultaneous reduction in dietary N and Ca, whereas a solitary Ca reduction stimulated 1,25-(OH)2 D3 synthesis...
April 3, 2018: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/29753845/gestational-di-2-ethylhexyl-phthalate-exposure-causes-fetal-intrauterine-growth-restriction-through-disturbing-placental-thyroid-hormone-receptor-signaling
#5
Zhen Yu, Yan Han, Ru Shen, Kun Huang, Yuan-Yuan Xu, Qu-Nan Wang, Shan-Shan Zhou, De-Xiang Xu, Fang-Biao Tao
Previous study reported that gestational Di-(2-ethylhexyl) phthalate (DEHP) exposure caused fetal intrauterine growth restriction (IUGR). We aimed to investigate the role of placental thyroid hormone receptor (THR) signaling in DEHP-induced IUGR. Dams were treated with DEHP (50 or 200 mg/kg) by gavage daily throughout pregnancy. As expected, gestational DEHP exposure dose-dependently caused fetal IUGR. The mRNA levels of placental Thrα1 and Thrβ1 were reduced and nuclear translocation of placental THRα1 and THRβ1 were suppressed in DEHP-exposed mice even though thyroid hormones in maternal and fetal sera were unaffected...
May 10, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29743295/defining-the-tissue-specific-roles-of-igf1-igf1r-in-regulating-metabolism-using-the-cre-loxp-system
#6
Rhonda D Kineman, Mercedes Del Rio-Moreno, André Sarmento-Cabral
It is clear that IGF1 is important in supporting growth and regulating metabolism. The IGF1 found in the circulation is primarily produced by the liver hepatocytes, but healthy mature hepatocytes do not express appreciable levels of the IGF1 receptor (IGF1R). Therefore, the metabolic actions of IGF1 are thought to be mediated via extra-hepatocyte actions. Given the structural and functional homology between IGF1/IGF1R and insulin receptor (INSR) signaling, and the fact that IGF1, IGF1R and INSR are expressed in most tissues of the body, it is difficult to separate out the tissue-specific contributions of IGF1/IGF1R in maintaining whole body metabolic function...
May 9, 2018: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/29739870/pregnancy-associated-plasma-protein-aa-pappaa-regulates-photoreceptor-synaptic-development-to-mediate-visually-guided-behavior
#7
Andrew H Miller, Hollis B Howe, Bryan M Krause, Scott A Friedle, Matthew I Banks, Brian D Perkins, Marc A Wolman
To guide behavior, sensory systems detect the onset and offset of stimuli and process these distinct inputs via parallel pathways. In the retina, this strategy is implemented by splitting neural signals for light onset and offset via synapses connecting photoreceptors to ON and OFF bipolar cells, respectively. It remains poorly understood which molecular cues establish the architecture of this synaptic configuration to split light onset and offset signals. A mutant with reduced synapses between photoreceptors and one bipolar cell type, but not the other, could reveal a critical cue...
May 8, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29738863/porcine-igf1-synonymous-mutation-alter-gene-expression-and-protein-binding-affinity-with-igf1r
#8
Yunyun Cheng, Songcai Liu, Gang Wang, Wenzhen Wei, Shan Huang, Rui Yang, Hongwei Geng, Haoyang Li, Jie Song, Lidan Sun, Hao Yu, Linlin Hao
CONTEXT: Insulin like growth factor 1 (IGF1) is privotal in the regulation of animal growth and is a single-chain globular protein composed of B, C, A, and D regions, of which the C region is involved in maintaining high affinity binding to the IGF1 receptor (IGF1R). PURPOSE: In this study, significant expression differences between large pigs and miniature pigs were detected and only one synonymous SNP (c.258G>A) in the C region of the coding sequence of IGF1 gene was screened...
May 5, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29731738/insulin-like-growth-factor-2-mrna-binding-protein-3-influences-sensitivity-to-anti-igf-system-agents-through-the-translational-regulation-of-igf1r
#9
Caterina Mancarella, Michela Pasello, Maria Cristina Manara, Lisa Toracchio, Evelina Fiorenza Sciandra, Piero Picci, Katia Scotlandi
Insulin-like growth factor 2 (IGF2) mRNA-binding protein 3 (IGF2BP3) is an oncofetal protein that binds RNA, thereby influencing the fate of target transcripts. IGF2BP3 is synthesized de novo in cancer, where it promotes proliferation, drug resistance, and metastasis via both IGF2-dependent and IGF2-independent mechanisms. Ewing sarcoma (ES) is a rare bone and soft tissue tumor in which the IGF system plays a pivotal role. This study aimed to investigate the effect of IGF2BP3 on the regulation of the IGF system in ES...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29730537/association-of-body-weight-gain-with-muscle-fat-and-liver-expression-levels-of-growth-hormone-receptor-insulin-like-growth-factor-i-and-beta-adrenergic-receptor-mrnas-in-steers
#10
W Zheng, X Leng, M Vinsky, C Li, H Jiang
The physiological basis of feed efficiency is unclear. Administration of GH or beta-adrenergic agonists improves feed efficiency in various animals. The objective of this study was to test the hypothesis that more efficient cattle have greater expression of GH receptor (GHR) or beta-adrenergic receptor (ADRB) mRNA in skeletal muscle, fat, and liver, the major target tissues of GH and beta-adrenergic agonists. Fifty Angus steers were fed a finishing diet for 75 d to determine residual feed intake (RFI). Carcass measures, skeletal muscle, subcutaneous fat, and liver samples were collected from the top 10 high-RFI steers and top 10 low-RFI steers at slaughter...
April 9, 2018: Domestic Animal Endocrinology
https://www.readbyqxmd.com/read/29725014/clinical-and-genomic-landscape-of-gastric-cancer-with-a-mesenchymal-phenotype
#11
Sang Cheul Oh, Bo Hwa Sohn, Jae-Ho Cheong, Sang-Bae Kim, Jae Eun Lee, Ki Cheong Park, Sang Ho Lee, Jong-Lyul Park, Yun-Yong Park, Hyun-Sung Lee, Hee-Jin Jang, Eun Sung Park, Sang-Cheol Kim, Jeonghoon Heo, In-Sun Chu, You-Jin Jang, Young-Jae Mok, WonKyung Jung, Baek-Hui Kim, Aeree Kim, Jae Yong Cho, Jae Yun Lim, Yuki Hayashi, Shumei Song, Elena Elimova, Jeannelyn S Estralla, Jeffrey H Lee, Manoop S Bhutani, Yiling Lu, Wenbin Liu, Jeeyun Lee, Won Ki Kang, Sung Kim, Sung Hoon Noh, Gordon B Mills, Seon-Young Kim, Jaffer A Ajani, Ju-Seog Lee
Gastric cancer is a heterogeneous cancer, making treatment responses difficult to predict. Here we show that we identify two distinct molecular subtypes, mesenchymal phenotype (MP) and epithelial phenotype (EP), by analyzing genomic and proteomic data. Molecularly, MP subtype tumors show high genomic integrity characterized by low mutation rates and microsatellite stability, whereas EP subtype tumors show low genomic integrity. Clinically, the MP subtype is associated with markedly poor survival and resistance to standard chemotherapy, whereas the EP subtype is associated with better survival rates and sensitivity to chemotherapy...
May 3, 2018: Nature Communications
https://www.readbyqxmd.com/read/29708498/transcriptional-profiling-identifies-strain-specific-effects-of-caloric-restriction-and-opposite-responses-in-human-and-mouse-white-adipose-tissue
#12
William R Swindell, Edward O List, Darlene E Berryman, John J Kopchick
Caloric restriction (CR) has been extensively studied in rodents as an intervention to improve lifespan and healthspan. However, effects of CR can be strain- and species-specific. This study used publically available microarray data to analyze expression responses to CR in males from 7 mouse strains (C57BL/6J, BALB/c, C3H, 129, CBA, DBA, B6C3F1) and 4 tissues (epididymal white adipose tissue (eWAT), muscle, heart, cortex). In each tissue, the largest number of strain-specific CR responses was identified with respect to the C57BL/6 strain...
April 29, 2018: Aging
https://www.readbyqxmd.com/read/29706427/effect-of-acute-stressors-adrenocorticotropic-hormone-administration-and-cortisol-release-on-milk-yield-the-expression-of-key-genes-proliferation-and-apoptosis-in-goat-mammary-epithelial-cells
#13
G F Bomfim, G K F Merighe, S A de Oliveira, J A Negrao
Cortisol is essential to milk synthesis; however, different acute stressors and the exogenous administration of adrenocorticotropic hormone (ACTH) decrease milk yield. Therefore, the effect of cortisol on milk yield and its influence on the survival of mammary epithelial cells have not been fully elucidated. In this context, the objective of this study was to evaluate the effect of cortisol on the expression of growth hormone receptor (GHR), insulin-like growth factor type 1 (IGF1), insulin-like growth factor type 1 receptor (IGF1R), insulin-like growth factor-binding protein 3 and 5 (IGFBP3 and IGFBP5), BAX, and BCL2 genes on the proliferation and apoptotic rates of mammary epithelial cells, and on milk yield in Saanen goats...
April 26, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29702590/insulin-like-growth-factor-igf-system-in-liver-diseases
#14
REVIEW
Agnieszka Adamek, Aldona Kasprzak
Hepatocyte differentiation, proliferation, and apoptosis are affected by growth factors produced in liver. Insulin-like growth factor 1 and 2 (IGF1 and IGF2) act in response to growth hormone (GH). Other IGF family components include at least six binding proteins (IGFBP1 to 6), manifested by both IGFs develop due to interaction through the type 1 receptor (IGF1R). The data based on animal models and/or in vitro studies suggest the role of IGF system components in cellular aspects of hepatocarcinogenesis (cell cycle progression, uncontrolled proliferation, cell survival, migration, inhibition of apoptosis, protein synthesis and cell growth), and show that systemic IGF1 administration can reduce fibrosis and ameliorate general liver function...
April 27, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29700060/growth-hormone-transgenesis-in-coho-salmon-disrupts-muscle-immune-function-impacting-cross-talk-with-growth-systems
#15
Abdullah Alzaid, Jin-Hyoung Kim, Robert H Devlin, Samuel A M Martin, Daniel J Macqueen
Suppression of growth during infection may aid resource allocation towards effective immune function. Past work supporting this hypothesis in salmonid fish revealed an immune-responsive regulation of the insulin-like growth factor (IGF) system, an endocrine pathway downstream of growth hormone (GH). Skeletal muscle is the main target for growth and energetic storage in fish, yet little is known about how its growth is regulated during an immune response. We addressed this knowledge gap by characterizing muscle immune responses in size-matched coho salmon ( Oncorhynchus kisutch ) achieving different growth rates...
April 26, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29687500/long-term-effect-of-early-nutrition-on-endocrine-parameters-and-liver-and-endometrial-gene-expression-of-the-members-of-the-somatotrophic-axis-in-hereford-heifers
#16
D Guggeri, A Meikle, M Carriquiry, I De Barbieri, F Montossi, C Viñoles
This study compared the effect of different management systems on endocrine parameters, and gene expression of members of the somatotrophic axis in the liver and endometrium of beef heifers. Twenty-two 709-days-old heifers submitted to Early Weaning (EW, n = 8), Traditional Weaning (TW, n = 7) and TW plus creep feeding (TW+CF, n = 7) were used. Animals were synchronized with two prostaglandin (PG) injections at 11-day interval (Oestrus = Day 0). Blood samples were collected daily for progesterone (P4) determination, and endometrial and liver biopsies on Days 7 and 16 for transcript determination of members of the somatotrophic axis...
April 23, 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29686648/igf-binding-proteins-why-do-they-exist-and-why-are-there-so-many
#17
REVIEW
John B Allard, Cunming Duan
Insulin-like growth factors (IGFs) are key growth-promoting peptides that act as both endocrine hormones and autocrine/paracrine growth factors. In the bloodstream and in local tissues, most IGF molecules are bound by one of the members of the IGF-binding protein (IGFBP) family, of which six distinct types exist. These proteins bind to IGF with an equal or greater affinity than the IGF1 receptor and are thus in a key position to regulate IGF signaling globally and locally. Binding to an IGFBP increases the half-life of IGF in the circulation and blocks its potential binding to the insulin receptor...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29678421/growth-hormone-receptor-deficient-pigs-resemble-the-pathophysiology-of-human-laron-syndrome-and-reveal-altered-activation-of-signaling-cascades-in-the-liver
#18
Arne Hinrichs, Barbara Kessler, Mayuko Kurome, Andreas Blutke, Elisabeth Kemter, Maren Bernau, Armin M Scholz, Birgit Rathkolb, Simone Renner, Sebastian Bultmann, Heinrich Leonhardt, Martin Hrabĕ de Angelis, Hiroshi Nagashima, Andreas Hoeflich, Werner F Blum, Martin Bidlingmaier, Rüdiger Wanke, Maik Dahlhoff, Eckhard Wolf
OBJECTIVE: Laron syndrome (LS) is a rare, autosomal recessive disorder in humans caused by loss-of-function mutations of the growth hormone receptor (GHR) gene. To establish a large animal model for LS, pigs with GHR knockout (KO) mutations were generated and characterized. METHODS: CRISPR/Cas9 technology was applied to mutate exon 3 of the GHR gene in porcine zygotes. Two heterozygous founder sows with a 1-bp or 7-bp insertion in GHR exon 3 were obtained, and their heterozygous F1 offspring were intercrossed to produce GHR-KO, heterozygous GHR mutant, and wild-type pigs...
May 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29662006/hyperinsulinemia-promotes-esophageal-cancer-development-in-a-surgically-induced-duodeno-esophageal-reflux-murine-model
#19
Diletta Arcidiacono, Arben Dedja, Cinzia Giacometti, Matteo Fassan, Daniele Nucci, Simona Francia, Federico Fabris, Alice Zaramella, Emily J Gallagher, Mauro Cassaro, Massimo Rugge, Derek LeRoith, Alfredo Alberti, Stefano Realdon
Hyperinsulinemia could have a role in the growing incidence of esophageal adenocarcinoma (EAC) and its pre-cancerous lesion, Barrett's Esophagus, a possible consequence of Gastro-Esophageal Reflux Disease. Obesity is known to mediate esophageal carcinogenesis through different mechanisms including insulin-resistance leading to hyperinsulinemia, which may mediate cancer progression via the insulin/insulin-like growth factor axis. We used the hyperinsulinemic non-obese FVB/N (Friend leukemia virus B strain) MKR (muscle (M)-IGF1R-lysine (K)-arginine (R) mouse model to evaluate the exclusive role of hyperinsulinemia in the pathogenesis of EAC related to duodeno-esophageal reflux...
April 14, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29656985/in-silico-analysis-of-the-potential-mechanism-of-telocinobufagin-on-breast-cancer-mcf-7-cells
#20
Yi-Wu Dang, Peng Lin, Li-Min Liu, Rong-Quan He, Li-Jie Zhang, Zhi-Gang Peng, Xiao-Jiao Li, Gang Chen
BACKGROUNDS AND AIMS: The extractives from a ChanSu, traditional Chinese medicine, have been discovered to possess anti-inflammatory and tumor-suppressing abilities. However, the molecular mechanism of telocinobufagin, a compound extracted from ChanSu, on breast cancer cells has not been clarified. The aim of this study is to investigate the underlying mechanism of telocinobufagin on breast cancer cells. METHODS AND MATERIALS: The differentially expressed genes after telocinobufagin treatment on breast cancer cells were searched and downloaded from Gene Expression Omnibus (GEO), ArrayExpress and literatures...
May 2018: Pathology, Research and Practice
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