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https://www.readbyqxmd.com/read/29055168/long-term-safety-of-growth-hormone-a-combined-registry-analysis
#1
Kirstine Stochholm, Wieland Kiess
OBJECTIVES: Preliminary data from the French cohort of the Safety and Appropriateness of Growth hormone treatments in Europe (SAGhE) study raised concerns regarding the safety of recombinant human GH, suggesting that GH may increase mortality and incidence of stroke in patients treated during childhood for GH deficiency or short stature. We evaluated published safety data, focusing on mortality, neoplasms, cerebrovascular events and diabetes across a number of large-scale pharmaceutical company GH registries...
October 21, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29055160/temperature-and-soil-fertility-as-regulators-of-tree-line-scots-pine-growth-and-survival-implications-for-the-acclimation-capacity-of-northern-populations
#2
Matti Rousi, Boy J M H Possen, Seppo Ruotsalainen, Tarja Silfver, Juha Mikola
The acclimation capacity of leading-edge tree populations is crucially important in a warming climate. Theoretical considerations suggest that adaptation through genetic change is needed, but this may be a slow process. Both positive and catastrophic outcomes have been predicted, while empirical studies have lagged behind theory development. Here we present results of a 30-year study of 55 000 Scots pine (Pinus sylvestris) trees, planted in 15 common gardens in three consecutive years near and beyond the present Scots pine tree line...
October 21, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29055157/simulating-the-onset-of-spring-vegetation-growth-across-the-northern-hemisphere
#3
Qiang Liu, Yongshuo H Fu, Yongwen Liu, Ivan A Janssens, Shilong Piao
Changes in the spring onset of vegetation growth in response to climate change can profoundly impact climate-biosphere interactions. Thus, robust simulation of spring onset is essential to accurately predict ecosystem responses and feedback to ongoing climate change. To date, the ability of vegetation phenology models to reproduce spatiotemporal patterns of spring onset at larger scales has not been thoroughly investigated. In this study, we took advantage of phenology observations via remote sensing to calibrate and evaluated six models, including both one-phase (considering only forcing temperatures) and two-phase (involving forcing, chilling, and photoperiod) models across the Northern Hemisphere between 1982 and 2012...
October 21, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29055138/effects-of-a-bone-graft-substitute-consisting-of-porous-gradient-ha-zro2-and-gelatin-chitosan-slow-release-hydrogel-containing-bmp-2-and-bmscs-on-lumbar-vertebral-defect-repair-in-rhesus-monkey
#4
Rong-Xue Shao, Ren-Fu Quan, Tuo Wang, Wei-Bin Du, Gao-Yong Jia, Dong Wang, Long-Bao Lv, Cai-Yin Xu, Xi-Cheng Wei, Jin-Fu Wang, Di-Sheng Yang
Dense biomaterial plays an important role in bone replacement. However, it fails to induce bone-cell migration into graft material. In the present study, a novel bone-graft substitute (BGS) consisting of porous gradient HA/ZrO2 composite (PGHC) and gelatin/chitosan slow-release hydrogel containing BMP-2 and BMSCs was designed and prepared to repair lumbar vertebral defects. The morphological characteristics of the BGS evaluated by scanning electron microscope showed that it had a three-dimensional network structure with uniformly distributed chitosan microspheres on the surfaces of the graft material and the interior of the pores...
October 21, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29055125/vascular-endothelial-growth-factor-vegf-related-single-nucleotide-polymorphisms-rs10738760-and-rs6921438-are-not-associated-with-diabetic-retinopathy-dr-in-slovenian-patients-with-type-2-diabetes-mellitus-t2dm
#5
Rifet Terzić, Ines Cilenšek, Ruda Zorc Pleskovič, Sara Mankoč, Aleksandra Milutinović
Diabetic retinopathy (DR) is a complication of diabetes characterized by vascular permeability, increased tissue ischemia, and angiogenesis. One of the most important proteins involved in angiogenesis is vascular endothelial growth factor (VEGF, also known as VEGFA). A previous study demonstrated that two single nucleotide polymorphisms (SNPs), rs6921438 and rs10738760, account for nearly half the variation in circulating VEGF levels. The aim of our study was to assess the association between rs6921438 and rs10738760 and DR in Slovenian patients with type 2 diabetes mellitus (T2DM)...
October 20, 2017: Bosnian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29054984/overcoming-resistance-to-cetuximab-with-honokiol-a-small-molecule-polyphenol
#6
Hannah E Pearson, Mari Iida, Rachel A Orbuch, Nellie K McDaniel, Kwangok P Nickel, Randall J Kimple, Jack Arbiser, Deric L Wheeler
Overexpression and activation of the Epidermal Growth Factor Receptor (EGFR) have been linked to poor prognosis in several human cancers. Cetuximab is a monoclonal antibody against EGFR, that is used for the treatment in head and neck squamous cell carcinoma (HNSCC) and metastatic colorectal cancer. Unfortunately, most tumors have intrinsic or acquire resistance to cetuximab during the course of therapy. Honokiol is a natural compound found in the bark and leaves of the Chinese Magnolia tree and is established to have several anti-cancer properties without appreciable toxicity...
October 20, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/29054978/breast-cancer-in-latinas-a-focus-on-intrinsic-subtypes-distribution
#7
Silvia J Serrano-Gómez, Laura Fejerman, Jovanny Zabaleta
Breast cancer is the most frequent cancer in women worldwide. It is classified into intrinsic subtypes characterized by different molecular profiles and prognosis. The prevalence of the different intrinsic subtypes varies between population groups. Immunohistochemistry surrogates based on the expression of the estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) have been widely used to study the distribution of intrinsic subtypes in Non-Hispanic Whites and African Americans, but data is limited for Hispanic/Latina women...
October 20, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29054976/regulation-of-insulin-like-growth-factor-receptors-by-ubiquilin1
#8
Zimple Kurlawala, Rain Dunaway, Parag P Shah, Julie A Gosney, Leah J Siskind, Brian P Ceresa, Levi J Beverly
Insulin-like growth factor-1 receptor (IGF1R) is a receptor tyrosine kinase that mediates growth, proliferation and survival. Dysregulation of IGF pathway contributes to initiation, progression and metastasis of cancer and is also involved in diseases of glucose metabolism, such as Diabetes. We have identified Ubiquilin1 (UBQLN1) as a novel interaction partner of IGF1R, IGF2R and Insulin Receptor. UBQLN family of proteins have been studied primarily in the context of protein quality control and in the field of neurodegenerative disorders...
October 20, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/29054886/the-ssu-processome-interactome-in-saccharomyces-cerevisiae-reveals-potential-new-protein-subcomplexes
#9
Nicholas G Vincent, J Michael Charette, Susan J Baserga
Ribosome assembly is an evolutionarily conserved and energy intensive process required for cellular growth, proliferation, and maintenance. In yeast, assembly of the small ribosomal subunit (SSU) requires approximately 75 assembly factors that act in coordination to form the SSU processome, a 6 MDa ribonucleoprotein complex. The SSU processome is required for processing, modifying, and folding the pre-ribosomal RNA (rRNA) to prepare it for incorporation into the mature SSU. Although the protein composition of the SSU processome has been known for some time, the interaction network of the proteins required for its assembly has remained poorly defined...
October 20, 2017: RNA
https://www.readbyqxmd.com/read/29054874/extracellular-polymeric-matrix-production-and-relaxation-under-fluid-shear-and-mechanical-pressure-in-staphylococcus-aureus-biofilms
#10
Jiapeng Hou, Deepak H Veeregowda, Betsy van de Belt-Gritter, Henk J Busscher, Henny C van der Mei
The viscoelasticity of a biofilm's EPS (extracellular-polymeric-substance) matrix conveys protection against mechanical challenges, but adaptive responses of biofilm inhabitants to produce EPS are not well known. Here, we compare the response of a biofilm of an EPS producing (ATCC 12600) and non-EPS producing (5298) Staphylococcus aureus strain to fluid shear and mechanical challenge. Confocal-Laser-Scanning-Microscopy confirmed absence of calcofluorwhite-stainable EPS in biofilms of S. aureus 5298. ATR-FTIR spectroscopy combined with tribometry indicated that the polysaccharide production per bacterium in the initial adhering layer was higher during growth at high shear than at low shear and this increased EPS production extended to entire biofilms, as indicated by tribometrically measured coefficients of friction (CoF)...
October 20, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29054861/regulation-of-human-feto-placental-endothelial-barrier-integrity-by-vascular-endothelial-growth-factors-competitive-interplay-between-vegf-a165a-vegf-a165b-pigf-and-ve-cadherin
#11
Vincent Pang, David O Bates, Lopa Leach
The human placenta nourishes and protects the developing fetus whilst influencing maternal physiology for fetal advantage. It expresses several members of the VEGF family including the pro-angiogenic/pro-permeability VEGF-A165a isoform, the anti-angiogenic VEGF-A165b, placental growth factor (PIGF) and their receptors, VEGFR1 and VEGFR2. Alterations in the ratio of these factors during gestation and in complicated pregnancies have been reported; however the impact of this on feto-placental endothelial barrier integrity is unknown...
October 20, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29054855/h-ras-deletion-protects-against-angiotensin-ii-induced-arterial-hypertension-and-cardiac-remodeling-through-protein-kinase-g-i%C3%AE-pathway-activation
#12
Paloma Martín-Sánchez, Alicia Luengo, Mercedes Griera, María Jesús Orea, Marina López-Olañeta, Antonio Chiloeches, Enrique Lara-Pezzi, Sergio de Frutos, Manuel Rodríguez-Puyol, Laura Calleros, Diego Rodríguez-Puyol
Ras proteins regulate cell survival, growth, differentiation, blood pressure, and fibrosis in some organs. We have demonstrated that H-ras gene deletion produces mice hypotension via a soluble guanylate cyclase-protein kinase G (PKG)-dependent mechanism. In this study, we analyzed the consequences of H-ras deletion on cardiac remodeling induced by continuous angiotensin II (AngII) infusion and the molecular mechanisms implied. Left ventricular posterior wall thickness and mass and cardiomyocyte cross-sectional area were similar between AngII-treated H-Ras knockout (H-ras(-/-) ) and control wild-type (H-ras(+/+) ) mice, as were extracellular matrix protein expression...
October 20, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29054812/the-impact-of-inter-annual-rainfall-variability-on-african-savannas-changes-with-mean-rainfall
#13
Alexis D Synodinos, Britta Tietjen, Dirk Lohmann, Florian Jeltsch
Savannas are mixed tree-grass ecosystems whose dynamics are predominantly regulated by resource competition and the temporal variability in climatic and environmental factors such as rainfall and fire. Hence, increasing inter-annual rainfall variability due to climate change could have a significant impact on savannas. To investigate this, we used an ecohydrological model of stochastic differential equations and simulated African savanna dynamics along a gradient of mean annual rainfall (520-780 mm/year) for a range of inter-annual rainfall variabilities...
October 17, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29054647/pilot-scale-aided-phytoremediation-of-a-co-contaminated-soil
#14
Charlotte Marchand, Michel Mench, Yahya Jani, Fabio Kaczala, Peter Notini, Mohamed Hijri, William Hogland
A pilot scale experiment was conducted to investigate the aided-phytoextraction of metals and the aided-phytodegradation of petroleum hydrocarbons (PHC) in a co-contaminated soil. First, this soil was amended with compost (10% w/w) and assembled into piles (Unp-10%C). Then, a phyto-cap of Medicago sativa L. either in monoculture (MS-10%C) or co-cropped with Helianthus annuus L. as companion planting (MSHA-10%C) was sown on the topsoil. Physico-chemical parameters and contaminants in the soil and its leachates were measured at the beginning and the end of the first growth season (after five months)...
October 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29054422/selenoproteins-in-tumorigenesis-and-cancer-progression
#15
Sarah P Short, Christopher S Williams
Selenium is a micronutrient essential to human health and has long been associated with cancer prevention. Functionally, these effects are thought to be mediated by a class of selenium-containing proteins known as selenoproteins. Indeed, many selenoproteins have antioxidant activity which can attenuate cancer development by minimizing oxidative insult and resultant DNA damage. However, oxidative stress is increasingly being recognized for its "double-edged sword" effect in tumorigenesis, whereby it can mediate both negative and positive effects on tumor growth depending on the cellular context...
2017: Advances in Cancer Research
https://www.readbyqxmd.com/read/29054333/developmental-trend-of-children-with-down-s-syndrome-how-do-sex-and-neonatal-conditions-influence-their-developmental-patterns
#16
Sayaka Aoki, Yuko Yamauchi, Keiji Hashimoto
OBJECTIVE: This study investigated factors that would influence developmental trend of children with Down's syndrome (DS) in three different domains (motor, cognitive, language), specifically focusing on the effect of sex and neonatal conditions, including preterm birth, low birth weight, and congenital heart disease (CHD). METHODS: The participants were 158 children with DS (mean age at the initial test = 25.5 months) receiving clinical service at a rehabilitation center in Yokohama, Japan...
October 17, 2017: Brain & Development
https://www.readbyqxmd.com/read/29054324/protective-role-of-chrysin-on-6-hydroxydopamine-induced-neurodegeneration-a-mouse-model-of-parkinson-s-disease-involvement-of-neuroinflammation-and-neurotrophins
#17
André T R Goes, Cristiano R Jesse, Michelle S Antunes, Fernando Vagner Lobo Ladd, Aliny Antunes Barbosa Lobo Ladd, Cristiane Luchese, Natalia Paroul, Silvana Peterini Boeira
Chrysin is a natural flavonoid which is found in bee propolis, honey and various plants, and neuroprotective effect of chrysin in mice was previously demonstrated by our group. Neuroinflammation, neurotrophic factors and neuronal recovery factors associated with the neuroprotective effect of this flavonoid require further investigations. Thus, now we investigated the possible involvement of inflammatory cytokines, neurotrophic factors and neuronal recovery in the effect of chrysin in 6-hydroxidopamine (6-OHDA), a well-established model of Parkinson's disease, in striatum of mice...
October 17, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29054270/the-peptidome-comes-of-age-mass-spectrometry-based-characterization-of-the-circulating-cancer-peptidome
#18
David W Greening, Eugene A Kapp, Richard J Simpson
Peptides play a seminal role in most physiological processes acting as neurotransmitters, hormones, antibiotics, and immune regulation. In the context of tumor biology, it is hypothesized that endogenous peptides, hormones, cytokines, growth factors, and aberrant degradation of select protein networks (e.g., enzymatic activities, protein shedding, and extracellular matrix remodeling) are fundamental in mediating cancer progression. Analysis of peptides in biological fluids by mass spectrometry holds promise of providing sensitive and specific diagnostic and prognostic information for cancer and other diseases...
2017: Enzymes
https://www.readbyqxmd.com/read/29053988/intermedin-reduces-neointima-formation-by-regulating-vascular-smooth-muscle-cell-phenotype-via-camp-pka-pathway
#19
Qing Zhu, Xian-Qiang Ni, Wei-Wei Lu, Jin-Sheng Zhang, Jin-Ling Ren, Di Wu, Yao Chen, Lin-Shuang Zhang, Yan-Rong Yu, Chao-Shu Tang, Yong-Fen Qi
BACKGROUND AND AIMS: Vascular smooth muscle cell (VSMC) dedifferentiation contributes to neointima formation, which results in various vascular disorders. Intermedin (IMD), a cardiovascular paracrine/autocrine polypeptide, is involved in maintaining circulatory homeostasis. However, whether IMD protects against neointima formation remains largely unknown. The purpose of this study is to investigate the role of IMD in neointima formation and the possible mechanism. METHODS: IMD1-53 (100ng/kg/h) or saline water was used on rat carotid-artery balloon-injury model...
October 9, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29053856/propolis-supplementation-attenuates-the-negative-effects-of-oxidative-stress-induced-by-paraquat-injection-on-productive-performance-and-immune-function-in-turkey-poults
#20
Ahmed O Abass, Nancy N Kamel, Walaa H Khalifa, G F Gouda, M A F El-Manylawi, Gamal M K Mehaisen, Magdi M Mashaly
Paraquat (PQ) is used as a herbicide in agriculture and causes oxidative and inflammatory damage to animal tissues. The current study was conducted to investigate the positive effects of dietary propolis (PR), as a potent naturally produced antioxidant, on growth performance and immune function of turkey poults exposed to oxidative stress induced by PQ injection. Native male turkey poults (n = 120, 49-d-old) were randomly assigned into 4 groups: poults received a basal diet with a daily subcutaneous PQ injection of 5 mg/kg BW for 7 consecutive days (PQ group), an experimental diet containing 1 g/kg PR with a daily subcutaneous PQ injection for 7 days (PR+PQ group), or received the experimental PR diet with a daily subcutaneous injection of 0...
October 5, 2017: Poultry Science
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