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Changqing Lu, Lihua Dong, Hui Zhou, Qianmei Li, Guojiao Huang, Shu Jun Bai, Linchuan Liao
Oligodendrocytes are the myelin-producing cells of the central nervous system (CNS). A variety of brain disorders from "classical" demyelinating diseases, such as multiple sclerosis, stroke, schizophrenia, depression, Down syndrome and autism, are shown myelination defects. Oligodendrocyte myelination is regulated by a complex interplay of intrinsic, epigenetic and extrinsic factors. Gpr17 (G protein-coupled receptor 17) is a G protein-coupled receptor, and has been identified to be a regulator for oligodendrocyte development...
March 14, 2018: Scientific Reports
Amo Dal Piva, Lpc Contreras, F C Ribeiro, L C Anami, Sea Camargo, Aoc Jorge, M A Bottino
INTRODUCTION: This study evaluated the morphology, biofilm formation, and viability of human gingival fibroblasts in contact with two monolithic ceramics after two different finishing techniques: polishing or glazing. For this, 92 blocks (4.5 × 4.5 × 1.5 mm) of each ceramic were made using high translucency zirconia partially stabilized by yttrium (YZHT) and lithium silicate reinforced by zirconium (ZLS). METHODS AND MATERIALS: Blocks were sintered and then divided into glazing (g) or polishing (p) surface finish...
March 13, 2018: Operative Dentistry
Yan-Hua Xiao, Xiao-Yun He, Qing Han, Fan Yang, Su-Xian Zhou
Platelet-activating factor (PAF) promotes glomerular extracellular matrix (ECM) deposition, primarily through activation of the protein kinase C (PKC) pathway. The present study was designed to investigate whether atorvastatin, which mediates a protective effect against glomerular ECM deposition and diabetic neuropathy, may interfere with the PKC‑transforming growth factor‑β1 (TGF‑β1) pathway in a model of human mesangial cells (HMCs) exposed to a high glucose (HG) and lysophosphatidylcholine (LPC) environment...
March 9, 2018: Molecular Medicine Reports
Reza Naeimi, Fatemeh Safarpour, Mona Hashemian, Hamed Tashakorian, Seyed Raheleh Ahmadian, Manouchehr Ashrafpour, Maryam Ghasemi-Kasman
Curcumin has been introduced as effective anti-inflammatory agent in treatment of several inflammatory disorders. Despite the wide range pharmacological activities, clinical application of curcumin is restricted mainly due to the low water solubility of this substance. More recently, we could remarkably improve the aqueous solubility of curcumin by its encapsulation in chitosan-alginate-sodium tripolyphosphate nanoparticles (CS-ALG-STPP NPs). In this study, the anti-inflammatory and myelin protective effects of curcumin-loaded NPs were evaluated in lysolecithin (LPC)-induced focal demyelination model...
March 9, 2018: Neuroscience Letters
Stefano Sivolella, Chiara Perin, Marco Capecchi, Valerio Buongiorno, Marialuisa Valente
Lateral periodontal cysts (LPCs) are rare odontogenic cysts of developmental origin. A 52-year-old man presented with an asymptomatic gingival swelling located between the mandibular left canine and first premolar, both of which were vital. Radiography showed a well-circumscribed radiolucent area and loss of the lamina dura around the tooth socket in contact with the lesion and of the interproximal buccal bone. The lesion was enucleated. The defect was immediately grafted with a 1:1 mixed autologous and heterologous bone graft covered with a collagen membrane...
March 7, 2018: International Journal of Periodontics & Restorative Dentistry
M Hariharan, R Sindhu, Vikneswaran Vijean, Haniza Yazid, Thiyagar Nadarajaw, Sazali Yaacob, Kemal Polat
BACKGROUND AND OBJECTIVE: Infant cry signal carries several levels of information about the reason for crying (hunger, pain, sleepiness and discomfort) or the pathological status (asphyxia, deaf, jaundice, premature condition and autism, etc.) of an infant and therefore suited for early diagnosis. In this work, combination of wavelet packet based features and Improved Binary Dragonfly Optimization based feature selection method was proposed to classify the different types of infant cry signals...
March 2018: Computer Methods and Programs in Biomedicine
Adrien Guillot, Imène Gasmi, Arthur Brouillet, Yeni Ait-Ahmed, Julien Calderaro, Isaac Ruiz, Bin Gao, Sophie Lotersztajn, Jean-Michel Pawlotsky, Fouad Lafdil
Liver progenitor cells (LPCs)/ductular reactions (DRs) are associated with inflammation and implicated in the pathogenesis of chronic liver diseases. However, how inflammation regulates LPCs/DRs remains largely unknown. Identification of inflammatory processes that involve LPC activation and expansion represent a key step in understanding the pathogenesis of liver diseases. In the current study, we found that diverse types of chronic liver diseases are associated with elevation of infiltrated interleukin (IL)-17-positive (+) cells and cytokeratin 19 (CK19)+ LPCs, and both cell types colocalized and their numbers positively correlated with each other...
March 2018: Hepatology Communications
Reza Naeimi, Saeideh Baradaran, Manouchehr Ashrafpour, Ali Akbar Moghadamnia, Maryam Ghasemi-Kasman
Although the beneficial effects of quercetin on oligodendrocyte precursor cell (OPCs) population has been evaluated in-vitro, there are few studies about the effects of quercetin on myelin repair in the context of demyelination. The aim of this study was to investigate the effects of querectin on functional recovery and myelin repair of optic chiasm in lysolecithin (LPC)-induced demyelination model. Demyelination was induced by local injection of LPC 1% (2 μl) into rat optic chiasm. Querectin at doses 25 or 50 mg/kg was administrated daily by oral gavage for 7 or 14 days post LPC...
March 1, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Ahmed F Hanafy, Hany S M Ali, Samar N Elachy, El-Sayed E Habib
Ciprofloxacin biodegradable implantable matrices (CPX-IMs) of tailored porous surfaces were fabricated by hot melt injection molding of poly L-lactic acid (PLLA) followed by coating with PLLA/sodium chloride. CPX-IDs were designed to have a non-porous coat (NPC) or a porous coat of small pore size150-250 µm (SPC) or a large pore size 250-350µm (LPC). CPX-IMs surface pore size was confirmed by scanning electron microscope. Hardness of NPC, LPC and SPC CPX-IMs were 58±2.8, 53±1.9, and 50±2.1 N respectively...
February 27, 2018: Drug Development and Industrial Pharmacy
Li Cong, Yong Zhang, He Huang, Jianguo Cao, Xiaohua Fu
7-Difluoromethoxy-5,4'-dimethoxy-genistein (DFMG) is a novel chemical compound synthesized using genistein. Previous studies have indicated that DFMG can reverse the apoptosis of vascular endothelial cells (VECs) by regulating the mitochondrial apoptosis pathway. The present study aimed to investigate the activity and molecular mechanism underlying DFMG‑mediated protection of vascular smooth muscle cell (VSMCs) using a non‑contact co‑culture model established by using Transwell insert. Secretion of interleukin‑6 (IL‑6) and tumor necrosis factor‑α (TNF‑α) were measured by ELISA...
February 26, 2018: Molecular Medicine Reports
Li Cong, Shuting Yang, Yong Zhang, Jianguo Cao, Xiaohua Fu
7‑difluoromethoxy‑5,4'‑dimethoxy‑genistein (DFMG) is a novel active chemical entity, which modulates the function and signal transduction of endothelial cells and macrophages (MPs), and is essential in the prevention of atherosclerosis. In the present study, the activity and molecular mechanism of DFMG on MPs was investigated using a Transwell assay to construct a non‑contact co‑culture model. Human umbilical vein endothelial cells (HUVE‑12), which were incubated with lysophosphatidylcholine (LPC), were seeded in the upper chambers, whereas PMA‑induced MPs were grown in the lower chambers...
February 23, 2018: International Journal of Molecular Medicine
Tomas Vega-Zuniga, Dominik Trost, Katrin Schicker, Eva M Bogner, Harald Luksch
Previous avian thalamic studies have shown that the medial ventral thalamus is composed of several nuclei located close to the lateral wall of the third ventricle. Although the general connectivity is known, detailed morphology and connectivity pattern in some regions are still elusive. Here, using the intracellular filling technique in the chicken, we focused on two neural structures, namely, the retinorecipient neuropil of the n. geniculatus lateralis pars ventralis (GLv), and the adjacent n. intercalatus thalami (ICT)...
2018: Frontiers in Neural Circuits
Jiahui Han, Yingxia Dai, Liufang Xie, Fuhong Li
Numerous studies have explored the neural mechanisms related to task switching or rule shifting, but few have revealed the neural substrates related to rule shifting at different hierarchical levels. The purpose of this study is to explore the different event-related potentials (ERPs) elicited by higher and lower hierarchical levels of rule shifting in a cue-target task. In the task, participants were presented with Arabic digits (1-9, excluding 5), and performed a parity or magnitude judgment according to the preceding cues, a letter R...
February 21, 2018: Biological Psychology
Weiguo Zhang, Xiao Wang, Youhan Miao, Chunhong Hu, Weifeng Zhao
PURPOSES: To determine if liver-to-portal vein contrast ratio (LPC) correlates with liver function in patients with hepatitis B virus (HBV)-related cirrhosis on gadolinium-ethoxybenzyl-diethylenetriamine penta-acetic acid (Gd-EOB-DTPA)-enhanced MR imaging. METHODS: A total of 92 patients with normal (n = 20) or HBV-related cirrhotic livers graded by Child-Pugh class A (n = 50), B (n = 17) or C (n = 5) who underwent Gd-EOB-DTPA-enhanced 3Tesla MR imaging were retrospectively reviewed...
February 23, 2018: Abdominal Radiology
Evgeny Berdyshev, Elena Goleva, Irina Bronova, Nathan Dyjack, Cydney Rios, John Jung, Patricia Taylor, Mingeum Jeong, Clifton F Hall, Brittany N Richers, Kathryn A Norquest, Tao Zheng, Max A Seibold, Donald Ym Leung
Lipids in the stratum corneum of atopic dermatitis (AD) patients differ substantially in composition from healthy subjects. We hypothesized that hyperactivated type 2 immune response alters AD skin lipid metabolism. We have analyzed stratum corneum lipids from nonlesional and lesional skin of AD subjects and IL-13 skin-specific Tg mice. We also directly examined the effects of IL-4/IL-13 on human keratinocytes in vitro. Mass spectrometric analysis of lesional stratum corneum from AD subjects and IL-13 Tg mice revealed an increased proportion of short-chain (N-14:0 to N-24:0) NS ceramides, sphingomyelins, and 14:0-22:0 lysophosphatidylcholines (14:0-22:0 LPC) with a simultaneous decline in the proportion of corresponding long-chain species (N-26:0 to N-32:0 sphingolipids and 24:0-30:0 LPC) when compared with healthy controls...
February 22, 2018: JCI Insight
Qian Shang, Guanxiong Pei, Jia Jin, Wuke Zhang, Yuran Wang, Xiaoyi Wang
Copycat brands mimic brand leaders to free ride on the latter's equity. However, little is known regarding if and how consumers confuse copycat as leading brand in purchasing. In this study, we applied a word-pair evaluation paradigm in which the first word was a brand name (copycat vs. normal brand both similar with a leading brand in category), followed by a product name (near vs. far from the leading brand's category). Behavioral results showed that, when the product is near the leader's category, the copycat strategy (CN) was more preferred compared to the normal brand (NN) but not different in the far product condition (CF and NF)...
2018: PloS One
O G Katsai, O A Ruban, Y M Krasnopolskyi
This study investigates the development of a method for obtaining cytochrome C-containing liposomes (LS-Cyt), and evaluates their stability and specific activity. LS-Cyt were intended for the therapy of ophthalmic diseases. LS-Cyt were prepared by high pressure homogenization technique and lyophilized to obtain freeze-dried LS-Cyt. It was proposed to use anionic phospholipid- dipalmitoylphosphatidylglycerol (DPPG-Na) and phosphatidylcholine (PC) in a nanoparticulate composition. Were investigated various concentrations of lactose and trehalose as cryoprotectants...
December 1, 2017: Die Pharmazie
Joost Rommers, Kara D Federmeier
Stimulus processing in language and beyond is shaped by context, with predictability having a particularly well-attested influence on the rapid processes that unfold during the presentation of a word. But does predictability also have downstream consequences for the quality of the constructed representations? On the one hand, the ease of processing predictable words might free up time or cognitive resources, allowing for relatively thorough processing of the input. On the other hand, predictability might allow the system to run in a top-down "verification mode", at the expense of thorough stimulus processing...
January 2, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
Jue Zhang, Liang Cai, Tinglan Wang, Songchao Tang, Quan Li, Tingting Tang, Shicheng Wei, Jun Qian, Jie Wei, Jiacan Su
Osseointegration is crucial for early fixation as well as long-term success of orthopedic implants. Bioactive composite containing lithium doping silica nanospheres (LSNs) and poly(dopamine) (PDA) were coated on polyetheretherketone (PK) surface (LPPK), and effects of the LSNs/PDA composite (LPC) coating on the biological properties of LPPK were assessed both in vitro and in vivo. Results showed that LPPK with improved bioactivity remarkably promoted apatite mineralization in simulated body fluid (SBF) compared with PDA coated on PK (PPK) and PK...
January 30, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
Yong-Ping Lu, Christoph Reichetzeder, Cornelia Prehn, Liang-Hong Yin, Chen Yun, Shufei Zeng, Chang Chu, Jerzy Adamski, Berthold Hocher
BACKGROUND/AIMS: Impaired birth outcomes, like low birth weight, have consistently been associated with increased disease susceptibility to hypertension in later life. Alterations in the maternal or fetal metabolism might impact on fetal growth and influence birth outcomes. Discerning associations between the maternal and fetal metabolome and surrogate parameters of fetal growth could give new insight into the complex relationship between intrauterine conditions, birth outcomes, and later life disease susceptibility...
January 29, 2018: Cellular Physiology and Biochemistry
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