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https://www.readbyqxmd.com/read/29791896/deterioration-of-cortical-bone-microarchitecture-critical-component-of-renal-osteodystrophy-evaluation
#1
Ashish K Sharma, Nigel D Toussaint, Rosemary Masterson, Stephen G Holt, Chamith S Rajapakse, Peter R Ebeling, Sindhu T Mohanty, Paul Baldock, Grahame J Elder
BACKGROUND: Cortical bone is a significant determinant of bone strength and its deterioration contributes to bone fragility. Thin cortices and increased cortical porosity have been noted in patients with chronic kidney disease (CKD), but the "Turnover Mineralization Volume" classification of renal osteodystrophy does not emphasize cortical bone as a key parameter. We aimed to assess trabecular and cortical bone microarchitecture by histomorphometry and micro-CT in patients with CKD G5 and 5D (dialysis)...
May 23, 2018: American Journal of Nephrology
https://www.readbyqxmd.com/read/29791869/ghrelin-and-the-heart
#2
Takeshi Tokudome, Kentaro Otani, Mikiya Miyazato, Kenji Kangawa
Ghrelin, a growth hormone-releasing peptide that was first discovered in the stomach of rats in 1999, is an endogenous ligand of growth hormone secretagogue receptor. Ghrelin exerts its potent growth hormone-releasing and orexigenic activities by binding to specific receptors in the brain. Subsequent studies showed that ghrelin participates in the regulation of diverse processes, including energy balance, body weight maintenance, and glucose and fat metabolism, and demonstrated that ghrelin is beneficial for treatment of cardiac diseases...
May 20, 2018: Peptides
https://www.readbyqxmd.com/read/29791693/decoronation-followed-by-dental-implants-placement-fundamentals-applications-and-explanations
#3
Alberto Consolaro, Paulo Domingos Ribeiro Júnior, Maurício A Cardoso, Dario A Oliveira Miranda, Monica Salfatis
Dental arches areas with teeth presenting dentoalveolar ankylosis and replacement root resorption can be considered as presenting normal bone, in full physiological remodeling process; and osseointegrated implants can be successfully placed. Bone remodeling will promote osseointegration, regardless of presenting ankylosis and/or replacement root resorption. After 1 to 10 years, all dental tissues will have been replaced by bone. The site, angulation and ideal positioning in the space to place the implant should be dictated exclusively by the clinical convenience, associated with previous planning...
January 2018: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/29790773/decisions-on-repositioning-of-intruded-permanent-incisors-a-review-and-case-presentation
#4
E Hurley, C Stewart, C Gallagher, M Kinirons
Traumatic intrusion is a luxation type of injury where the tooth is displaced along the axis of the tooth, into the alveolus. This injury is regarded as serious because of the tissue damage that it causes. The traumatic movement is associated with severe damage to the periodontal ligament, pulpal tissue, root and alveolar socket. Despite its severity, the rare occurrence of this injury in permanent teeth has resulted in limited studies of immature and mature permanent incisors. The purpose of this paper is to review this luxation injury of permanent immature incisors, and to describe its diagnosis, treatment and management...
June 2018: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29788108/porphyromonas-gingivalis-strain-dependent-inhibition-of-uterine-spiral-artery-remodeling-in-the-pregnant-rat
#5
P Phillips, M B Brown, A Progulske-Fox, X J Wu, L Reyes
Porphyromonas gingivalis (Pg), is an important periodontal pathogen that is also implicated in pregnancy complications involving defective deep placentation (DDP). We hypothesized that Pg invasion of the placental bed promotes DDP. Pregnant rats were intravenously inoculated with sterile vehicle, Pg strain W83, or A7436 at gestation day (GD) 14 (acute cohort). Non-pregnant rats received repeated oral inoculations for 3 months before breeding (chronic cohort). Tissues and/or sera were collected at GD18 for analysis...
May 18, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29786750/microrna%C3%A2-20b%C3%A2-5p-promotes-ventricular-remodeling-by-targeting-the-tgf%C3%A2-%C3%AE-smad-signaling-pathway-in-a-rat-model-of-ischemia%C3%A2-reperfusion-injury
#6
Zhao-Guang Liang, Hong Yao, Rong-Sheng Xie, Chun-Lin Gong, Ye Tian
Myocardial ischemic injury results from severe impairment of the coronary blood supply and may lead to metabolic and ultrastructural changes, thereby causing irreversible damage. MicroRNA (miR)‑20b‑5p has been demonstrated to be involved in malignancies of the breast, colorectum, stomach, blood and oropharynx. The present study aimed to investigate the effects of miR‑20b‑5p on ventricular remodeling following myocardial ischemia‑reperfusion (IR) injury in rats by targeting small mothers against decapentaplegic homolog 7 (Smad7) via the transforming growth factor‑β (TGF‑β)/Smad signaling pathway...
May 18, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29786039/role-of-soluble-st2-levels-and-beta-blockers-dosage-on-cardiovascular-events-of-patients-with-unselected-st-segment-elevation-myocardial-infarction
#7
Wei-Ping Huang, Xuan Zheng, Lei He, Xi Su, Cheng-Wei Liu, Ming-Xiang Wu
Background: Serum soluble ST2 (sST2) levels are elevated early after acute myocardial infarction and are related to adverse left ventricular (LV) remodeling and cardiovascular outcomes in ST-segment elevation myocardial infarction (STEMI). Beta-blockers (BB) have been shown to improve LV remodeling and survival. However, the relationship between sST2, final therapeutic BB dose, and cardiovascular outcomes in STEMI patients remains unknown. Methods: A total of 186 STEMI patients were enrolled at the Wuhan Asia Heart Hospital between January 2015 and June 2015...
June 5, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29785963/swi-snf-and-rsc-cooperate-to-reposition-and-evict-promoter-nucleosomes-at-highly-expressed-genes-in-yeast
#8
Yashpal Rawal, Răzvan V Chereji, Hongfang Qiu, Sudha Ananthakrishnan, Chhabi K Govind, David J Clark, Alan G Hinnebusch
The nucleosome remodeling complex RSC functions throughout the yeast genome to set the positions of -1 and +1 nucleosomes and thereby determines the widths of nucleosome-depleted regions (NDRs). The related complex SWI/SNF participates in nucleosome remodeling/eviction and promoter activation at certain yeast genes, including those activated by transcription factor Gcn4, but did not appear to function broadly in establishing NDRs. By analyzing the large cohort of Gcn4-induced genes in mutants lacking the catalytic subunits of SWI/SNF or RSC, we uncovered cooperation between these remodelers in evicting nucleosomes from different locations in the promoter and repositioning the +1 nucleosome downstream to produce wider NDRs-highly depleted of nucleosomes-during transcriptional activation...
May 21, 2018: Genes & Development
https://www.readbyqxmd.com/read/29785961/trajectories-of-childhood-blood-pressure-and-adult-left-ventricular-hypertrophy-the-bogalusa-heart-study
#9
Tao Zhang, Shengxu Li, Lydia Bazzano, Jiang He, Paul Whelton, Wei Chen
This longitudinal study aims to characterize longitudinal blood pressure (BP) trajectories from childhood and examine the impact of level-independent childhood BP trajectories on adult left ventricular hypertrophy (LVH) and remodeling patterns. The longitudinal cohort consisted of 1154 adults (787 whites and 367 blacks) who had repeated measurements of BP 4 to 15 times from childhood (4-19 years) to adulthood (20-51 years) and assessment of echocardiographic LV dimensions in adulthood. Model-estimated levels and linear slopes of BP at childhood age points were calculated in 1-year intervals using the growth curve parameters and their first derivatives, respectively...
May 21, 2018: Hypertension
https://www.readbyqxmd.com/read/29782286/-ngal-as-a-marker-for-some-extrarenal-complications-in-acute-coronary-syndrome
#10
M A Shalenkova, Z D Mikhailova, P F Klimkin
AIM: To study the role of neutrophil gelatinase-associated lipocalin (NGAL) as a marker for extrarenal complications in patients with acute coronary syndrome (ACS). MATERIALS AND METHODS: For 110 patients with ACS on days 1-3 of hospitalization, concentrations of NGAL, serum (s-NGAL) and urinary (u-NGAL) NGAL, and N-terminal fragment of pro-B natriuretic peptide (NT-proBNP) were measured, and transthoracic echocardiography was performed. Incidence of cardiovascular complications was determined during the stay in the hospital; hemodynamic parameters (systolic and diastolic blood pressure, heart rate) were measured on admission...
2018: Kardiologiia
https://www.readbyqxmd.com/read/29782259/-relationship-of-remodeling-of-carotid-arteries-and-left-ventricular-geometry-in-patients-with-chronic-glomerulonephritis
#11
I T Murkamilov, K A Aitbaev, A S Sarybaev, V V Fomin, I G Gordeev, Z R Rayimzhanov, N A Redjapova, F A Yusupov
PURPOSE: to study clinical-functional features of remodeling of carotid arteries and its relation to restructuring of the left ventricle (LV) in patients with chronic glomerulonephritis at pre-dialysis stage. MATERIALS AND METHODS: We examined 269 patients (189 men, 80 women) with chronic glomerulonephritis (CGN) aged 17-71 years, at pre-dialysis stages of the disease. We analyzed biochemical parameters of peripheral blood with the determination of daily proteinuria and glomerular filtration rate (GFR)...
April 2018: Kardiologiia
https://www.readbyqxmd.com/read/29781735/protein-kinase-d-was-involved-in-vascular-remodeling-in-spontaneously-hypertensive-rats
#12
Jing Geng, Zhuo Zhao, Le Yang, Mingwei Zhang, Xiangjuan Liu
The present study was designed to determine the role of PKD in vascular remodeling (VR) in Spontaneously hypertensive rats (SHRs). Increased SBP, VR and PKD activation were prominent in SHRs. The SBP has a positive correlation with the activation of PKD in SHRs. The ratio of media to lumen (MT/LD), volume fraction of collagen (VFC), hydroxyproline, IL-6, TNF-α and nitrotyrosine content were significantly related to the activated PKD. It may be concluded that PKD plays a central role in VR, and the mechanism may be related to its regulation of hypertrophy, fibrosis, inflammation and oxidative stress...
May 21, 2018: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29780721/type-b-aortic-dissection-new-perspectives
#13
REVIEW
Marc A A M Schepens
Background: Stanford type B aortic dissection is one of the aortic catastrophes with a high mortality and morbidity that needs immediate or delayed treatment, either surgically or endovascularly. This comprehensive review article addresses the current status of open, endovascular and hybrid treatment options for type B aortic dissections with the focus on new therapeutic perspectives. Methods: Evaluation of currently available evidence based on randomized and registry data and personal experience...
2018: Journal of Visualized Surgery
https://www.readbyqxmd.com/read/29780354/targeting-the-metastatic-bone-microenvironment-by-micrornas
#14
REVIEW
Marie-Therese Haider, Hanna Taipaleenmäki
Bone metastases are a common and devastating feature of late-stage breast cancer. Metastatic bone disease is a consequence of disturbed bone remodeling due to pathological interactions between cancer cells and the bone microenvironment (BME). In the BME, breast cancer cells severely alter the balanced bone formation and bone resorption driven by osteoblasts and osteoclasts. The complex cellular cross talk in the BME is governed by secreted molecules, signaling pathways and epigenetic cues including non-coding RNAs...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29780159/modulation-of-store-operated-calcium-entry-and-nascent-adhesion-by-p21-activated-kinase-1
#15
In-Sook Jeon, Hye-Ryun Kim, Eun-Young Shin, Eung-Gook Kim, Heon-Seok Han, Jin-Tae Hong, Hak-Kyo Lee, Ki-Duk Song, Joong-Kook Choi
Calcium mobilization is necessary for cell movement during embryonic development, lymphocyte synapse formation, wound healing, and cancer cell metastasis. Depletion of calcium in the lumen of the endoplasmic reticulum using inositol triphosphate (IP3) or thapsigargin (TG) is known to induce oligomerization and cytoskeleton-mediated translocation of stromal interaction molecule 1 (STIM1) to the plasma membrane, where it interacts with the calcium release-activated calcium channel Orai1 to mediate calcium influx; this process is referred to as store-operated calcium entry (SOCE)...
May 21, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29779941/the-epigenetic-state-of-prdm16-regulated-enhancers-in-radial-glia-controls-cortical-neuron-position
#16
José-Manuel Baizabal, Meeta Mistry, Miguel Turrero García, Nicolás Gómez, Olubusola Olukoya, Diana Tran, Matthew B Johnson, Christopher A Walsh, Corey C Harwell
The epigenetic landscape is dynamically remodeled during neurogenesis. However, it is not understood how chromatin modifications in neural stem cells instruct the formation of complex structures in the brain. We report that the histone methyltransferase PRDM16 is required in radial glia to regulate lineage-autonomous and stage-specific gene expression programs that control number and position of upper layer cortical projection neurons. PRDM16 regulates the epigenetic state of transcriptional enhancers to activate genes involved in intermediate progenitor cell production and repress genes involved in cell migration...
May 15, 2018: Neuron
https://www.readbyqxmd.com/read/29778853/natural-history-of-diabetic-coronary-atherosclerosis-by-quantitative-measurement-of-serial-coronary-computed-tomographic-angiography-results-of-the-paradigm-study-progression-of-atherosclerotic-plaque-determined-by-computed-tomographic-angiography-imaging
#17
Ung Kim, Jonathon A Leipsic, Stephanie L Sellers, Michael Shao, Philipp Blanke, Martin Hadamitzky, Yong-Jin Kim, Edoardo Conte, Daniele Andreini, Gianluca Pontone, Matthew J Budoff, Ilan Gottlieb, Byoung Kwon Lee, Eun Ju Chun, Filippo Cademartiri, Erica Maffei, Hugo Marques, Sanghoon Shin, Jung Hyun Choi, Renu Virmani, Habib Samady, Peter H Stone, Daniel S Berman, Jagat Narula, Leslee J Shaw, Jeroen J Bax, James K Min, Hyuk-Jae Chang
OBJECTIVES: This study aimed to determine the rate and extent of plaque progression (PP), changes in plaque features, and clinical predictors of PP in patients with diabetes mellitus (DM). BACKGROUND: The natural history of coronary PP in patients with DM is not well established. METHODS: A total of 1,602 patients (age 61.3 ± 9.0 years; 60.3% men; median scan interval 3.8 years) who underwent serial coronary computed tomography angiography over a period of at least 24 months were enrolled and analyzed from the PARADIGM (Progression of Atherosclerotic Plaque Determined by Computed Tomographic Angiography Imaging) trial...
May 11, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29777737/type-i-collagen-induces-mesenchymal-cell-differentiation-into-myofibroblasts-through-yap-induced-tgf-%C3%AE-1-activation
#18
Xiaoling Liu, Xinyu Long, Weiwei Liu, Yeli Zhao, Toshihiko Hayashi, Masayuki Yamato, Kazunori Mizuno, Hitomi Fujisaki, Shunji Hattori, Shin-Ichi Tashiro, Takaaki Ogura, Yuji Atsuzawa, Takashi Ikejima
In organ fibrosis, mechanical stress and transforming growth factor beta-1 (TGF-β1) promote differentiation into myofibroblast from mesenchymal cells, leading to extracellular matrix (ECM) remodeling or active synthesis, deposition or degradation of ECM components. A major component of ECM, type I collagen (col I) triple helical molecules assemble into fibrils or are denatured to gelatin without triple-helicity in remodeling. However, whether changes of ECM components in remodeling have influence on mesenchymal cell differentiation remains elusive...
May 16, 2018: Biochimie
https://www.readbyqxmd.com/read/29777721/pentraxins-crp-i-and-crp-ii-are-post-translationally-deiminated-and-differ-in-tissue-specificity-in-cod-gadus-morhua-l-ontogeny
#19
Bergljót Magnadóttir, Polly Hayes, Berglind Gísladóttir, Birkir Þór Bragason, Mariya Hristova, Anthony P Nicholas, Sigríður Guðmundsdóttir, Sigrun Lange
Pentraxins are fluid phase pattern recognition molecules that form an important part of the innate immune defence and are conserved between fish and human. In Atlantic cod (Gadus morhua L.), two pentraxin-like proteins have been described, CRP-I and CRP-II. Here we show for the first time that these two CRP forms are post-translationally deiminated (an irreversible conversion of arginine to citrulline) and differ with respect to tissue specific localisation in cod ontogeny from 3 to 84 days post hatching. While both forms are expressed in liver, albeit at temporally differing levels, CRP-I shows a strong association with nervous tissue while CRP-II is strongly associated to mucosal tissues of gut and skin...
May 16, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29776169/effects-of-nucleosome-stability-on-remodeler-catalyzed-repositioning
#20
Aaron M Morgan, Sarah E LeGresley, Koan Briggs, Gada Al-Ani, Christopher J Fischer
Chromatin remodelers are molecular motors that play essential roles in the regulation of nucleosome positioning and chromatin accessibility. These machines couple the energy obtained from the binding and hydrolysis of ATP to the mechanical work of manipulating chromatin structure through processes that are not completely understood. Here we present a quantitative analysis of nucleosome repositioning by the imitation switch (ISWI) chromatin remodeler and demonstrate that nucleosome stability significantly impacts the observed activity...
March 2018: Physical Review. E
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