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[PMID]:29466353
[Au] Autor:Türke A; Ménez B; Bach W
[Ad] Endereço:Department of Geosciences and MARUM, University of Bremen, Klagenfurter Str. GEO, Bremen, Germany.
[Ti] Título:Comparing biosignatures in aged basalt glass from North Pond, Mid-Atlantic Ridge and the Louisville Seamount Trail, off New Zealand.
[So] Source:PLoS One;13(2):e0190053, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Microbial life can leave various traces (or biosignatures) in rocks, including biotic alteration textures, biominerals, enrichments of certain elements, organic molecules, or remnants of DNA. In basalt glass from the ocean floor, microbial alteration textures as well as chemical and isotopic biosignatures have been used to trace microbial activity. However, little is known about the relationship between the physical and chemical nature of the habitat and the prevalent types of biosignatures. Here, we report and compare strongly variable biosignatures from two different oceanic study sites. We analyzed rock samples for their textural biosignatures and associated organic molecules. The biosignatures from the 8 Ma North Pond Region, which represents young, well-oxygenated, and hydrologically active crust, are characterized by little textural diversity. The organic matter associated with those textures shows evidence for the occurrence of remnants of complex biomolecules like proteins. Comparably the biosignatures from the older Louisville Seamount Trail (~70 Ma) are more texturally diverse, but associated with organic molecules that are more degraded. The Louisville Seamount has less fresh glass left and decreased permeability, which metabolic pathways may dominate that only leave molecular biosignatures without textural evidence of glass alteration. We propose that diverse biosignatures in oceanic crust may form during different stages of crustal evolution.
[Mh] Termos MeSH primário: Vidro
Silicatos
[Mh] Termos MeSH secundário: Microscopia Eletrônica de Varredura
Nova Zelândia
Espectroscopia de Infravermelho com Transformada de Fourier
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Silicates); 0 (basalt)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180222
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190053


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[PMID]:28271736
[Au] Autor:Lv L; Zhang X; Qiao J
[Ad] Endereço:a College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse , Tongji University , Shanghai , People's Republic of China.
[Ti] Título:Flocculation of low algae concentration water using polydiallyldimethylammonium chloride coupled with polysilicate aluminum ferrite.
[So] Source:Environ Technol;39(1):83-90, 2018 Jan.
[Is] ISSN:0959-3330
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The combined application of polydiallyldimethylammonium chloride (PDADMAC) and polysilicate aluminum ferrite (PSFA) was investigated to treat low algae density water samples, in which Microcystis aeruginosa is one of the dominant species. coagulation performance of M. aeruginosa was studied with regard to algal removal, Algal density was evaluated by determining the change in the optical density of the algal culture suspension at 680 nm and chlorophyll a. The dissolved organic matter, cellular morphology, viability, and recovery of M. aeruginosa cells after flocculation and sedimentation were also included. In addition, the effects of pH and addition order of PSFA and PDADMAC on algal removal were investigated. The removal efficiency of algae coagulated using combined PDADMAC and PSFA was improved by 34.5% and 19.3%, respectively. The organic matter removal was also enhanced. The optimum pH range for algal removal is 7.0-10.0, and the preferable addition sequence is the simultaneous addition of PDADMAC and PSFA. Scanning electron microscopy observation indicated that the combined usage of PDADMAC and PSFA caused no damage to the algal cell. Moreover, the experiment on algal recovery demonstrated that PDADMAC has bacteriostatic ability.
[Mh] Termos MeSH primário: Polietilenos/química
Compostos de Amônio Quaternário/química
Eliminação de Resíduos Líquidos/métodos
[Mh] Termos MeSH secundário: Alumínio/química
Compostos Férricos/química
Floculação
Microalgas
Silicatos/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ferric Compounds); 0 (Polyethylenes); 0 (Quaternary Ammonium Compounds); 0 (Silicates); 1317-54-0 (ferrite); 26062-79-3 (poly-N,N-dimethyl-N,N-diallylammonium chloride); CPD4NFA903 (Aluminum)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170309
[St] Status:MEDLINE
[do] DOI:10.1080/09593330.2017.1296028


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[PMID]:28985540
[Au] Autor:Wang YS; Dai JG; Wang L; Tsang DCW; Poon CS
[Ad] Endereço:Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
[Ti] Título:Influence of lead on stabilization/solidification by ordinary Portland cement and magnesium phosphate cement.
[So] Source:Chemosphere;190:90-96, 2018 Jan.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Inorganic binder-based stabilization/solidification (S/S) of Pb-contaminated soil is a commonly used remediation approach. This paper investigates the influences of soluble Pb species on the hydration process of two types of inorganic binders: ordinary Portland cement (OPC) and magnesium potassium phosphate cement (MKPC). The environmental leachability, compressive strength, and setting time of the cement products are assessed as the primary performance indicators. The mechanisms of Pb involved in the hydration process are analyzed through X-ray diffraction (XRD), hydration heat evolution, and thermogravimetric analyses. Results show that the presence of Pb imposes adverse impact on the compressive strength (decreased by 30.4%) and the final setting time (prolonged by 334.7%) of OPC, but it exerts much less influence on those of MKPC. The reduced strength and delayed setting are attributed to the retarded hydration reaction rate of OPC during the induction period. These results suggest that the OPC-based S/S of soluble Pb mainly depends on physical encapsulation by calcium-silicate-hydrate (CSH) gels. In contrast, in case of MKPC-based S/S process, chemical stabilization with residual phosphate (pyromorphite and lead phosphate precipitation) and physical fixation of cementitious struvite-K are the major mechanisms. Therefore, MKPC is a more efficient and chemically stable inorganic binder for the Pb S/S process.
[Mh] Termos MeSH primário: Materiais de Construção
Chumbo/química
Compostos de Magnésio/química
Fosfatos/química
Poluentes do Solo/química
[Mh] Termos MeSH secundário: Compostos de Cálcio
Géis/química
Minerais/química
Compostos de Potássio/química
Silicatos
Poluentes Químicos da Água/química
Difração de Raios X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Calcium Compounds); 0 (Gels); 0 (Magnesium Compounds); 0 (Minerals); 0 (Phosphates); 0 (Potassium Compounds); 0 (Silicates); 0 (Soil Pollutants); 0 (Water Pollutants, Chemical); 12190-77-1 (pyromorphite); 2P299V784P (Lead); 453COF7817 (magnesium phosphate); 62I1T06190 (lead phosphate); B7862WZ632 (potassium phosphate); S4255P4G5M (calcium silicate)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180305
[Lr] Data última revisão:
180305
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171007
[St] Status:MEDLINE


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[PMID]:29311524
[Au] Autor:Ogata F; Obayashi M; Nagahashi E; Nakamura T; Kawasaki N
[Ad] Endereço:Faculty of Pharmacy, Kindai University.
[Ti] Título:Effects of Water Addition to Prevent Deterioration of Soybean Oil by Calcium Silicate Adsorbent.
[So] Source:J Oleo Sci;67(1):95-103, 2018.
[Is] ISSN:1347-3352
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:In this study, we prepared calcium silicate at different molar ratios (Ca:Si=1:3, 1:6, and 1:9 refer to CAS-30S, CAS-60S, and CAS-90S, respectively) with water addition. The adsorbent characteristics (specific surface area, pore volume, mean pore diameter, and elemental analysis) were measured and the effect of water addition on the adsorbent surface for the prevention of deterioration was evaluated. In addition, the deterioration of soybean oil (SO) subjected to heating and aeration was investigated based on the acid value (AV) and carbonyl value (CV). The specific surface area increased in the order CAS-60S (160.51 m /g) < CAS-30S (182.61 m /g) < CAS-90S (204.19 m /g). Deterioration of SO could be induced by heating and aeration with AV and CV of 1.4 mg/g and 102.9 µmol/g, respectively. The adsorbent (CAS-30S and CAS-90S) with water addition (25% and 50%) was found to decrease the AV, indicating that a small amount of water addition to adsorbent surface is important for the decreasing of AV. In addition, the correlation between the decrease in AV and the specific surface area is strongly positive (R value: 0.968). The adsorption mechanism is thought to involve interactions between the polar compounds (free fatty acids) in the SO (nonaqueous phase) and the water layer (containing calcium ions released from the adsorbent) on the adsorbent surface. In summary, the data obtained in this study provide useful information for preventing the deterioration of SO and prolonging the oil life cycle.
[Mh] Termos MeSH primário: Compostos de Cálcio/química
Silicatos/química
Óleo de Soja/química
Eliminação de Resíduos Líquidos
Poluição da Água/prevenção & controle
Água/química
[Mh] Termos MeSH secundário: Ácidos/análise
Adsorção
Cálcio
Ácidos Graxos não Esterificados
Temperatura Alta
Íons
Oxirredução
Propriedades de Superfície
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acids); 0 (Calcium Compounds); 0 (Fatty Acids, Nonesterified); 0 (Ions); 0 (Silicates); 059QF0KO0R (Water); 8001-22-7 (Soybean Oil); S4255P4G5M (calcium silicate); SY7Q814VUP (Calcium)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180227
[Lr] Data última revisão:
180227
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180110
[St] Status:MEDLINE
[do] DOI:10.5650/jos.ess17175


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[PMID]:29211290
[Au] Autor:Lee BN; Chun SJ; Chang HS; Hwang YC; Hwang IN; Oh WM
[Ad] Endereço:Chonnam National University, School of Dentistry, Dental Science Research Institute, Department of Conservative Dentistry, Gwangju, Korea.
[Ti] Título:Physical properties and biological effects of mineral trioxide aggregate mixed with methylcellulose and calcium chloride.
[So] Source:J Appl Oral Sci;25(6):680-688, 2017 Nov-Dec.
[Is] ISSN:1678-7765
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: Methylcellulose (MC) is a chemical compound derived from cellulose. MTA mixed with MC reduces setting time and increases plasticity. This study assessed the influence of MC as an anti-washout ingredient and CaCl2 as a setting time accelerator on the physical and biological properties of MTA. MATERIAL AND METHODS: Test materials were divided into 3 groups; Group 1(control): distilled water; Group 2: 1% MC/CaCl2; Group 3: 2% MC/CaCl2. Compressive strength, pH, flowability and cell viability were tested. The gene expression of bone sialoprotein (BSP) was detected by RT-PCR and real- time PCR. The expression of alkaline phosphatase (ALP) and mineralization behavior were evaluated using an ALP staining and an alizarin red staining. RESULTS: Compressive strength, pH, and cell viability of MTA mixed with MC/CaCl2 were not significantly different compared to the control group. The flowability of MTA with MC/CaCI2 has decreased significantly when compared to the control (p<.05). The mRNA level of BSP has increased significantly in MTA with MC/CaCl2 compared to the control (p<.05). This study revealed higher expression of ALP and mineralization in cells exposed to MTA mixed with water and MTA mixed with MC/CaCl2 compared to the control (p<.05). CONCLUSIONS: MC decreased the flowability of MTA and did not interrupt the physical and biological effect of MTA. It suggests that these cements may be useful as a root-end filling material.
[Mh] Termos MeSH primário: Compostos de Alumínio/química
Compostos de Alumínio/farmacologia
Cloreto de Cálcio/farmacologia
Compostos de Cálcio/química
Compostos de Cálcio/farmacologia
Metilcelulose/farmacologia
Óxidos/química
Óxidos/farmacologia
Materiais Restauradores do Canal Radicular/química
Silicatos/química
Silicatos/farmacologia
[Mh] Termos MeSH secundário: Animais
Células Cultivadas/efeitos dos fármacos
Força Compressiva
Polpa Dentária/efeitos dos fármacos
Combinação de Medicamentos
Teste de Materiais
Camundongos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Aluminum Compounds); 0 (Calcium Compounds); 0 (Drug Combinations); 0 (Oxides); 0 (Root Canal Filling Materials); 0 (Silicates); 0 (mineral trioxide aggregate); 9004-67-5 (Methylcellulose); M4I0D6VV5M (Calcium Chloride)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180227
[Lr] Data última revisão:
180227
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE


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[PMID]:29211283
[Au] Autor:Garcia LDFR; Huck C; Magalhães FAC; Souza PPC; Souza Costa CA
[Ad] Endereço:Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Departamento de Odontologia, Área de Endodontia, Florianópolis, SC, Brasil.
[Ti] Título:Systemic effect of mineral aggregate-based cements: histopathological analysis in rats.
[So] Source:J Appl Oral Sci;25(6):620-630, 2017 Nov-Dec.
[Is] ISSN:1678-7765
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: Several studies reported the local tissue reaction caused by mineral aggregate-based cements. However, few studies have investigated the systemic effects promoted by these cements on liver and kidney when directly applied to connective tissue. The purpose of this in vivo study was to investigate the systemic effect of mineral aggregate-based cements on the livers and kidneys of rats. MATERIAL AND METHODS: Samples of Mineral Trioxide Aggregate (MTA) and a calcium aluminate-based cement (EndoBinder) containing different radiopacifiers were implanted into the dorsum of 40 rats. After 7 and 30 d, samples of subcutaneous, liver and kidney tissues were submitted to histopathological analysis. A score (0-3) was used to grade the inflammatory reaction. Blood samples were collected to evaluate changes in hepatic and renal functions of animals. RESULTS: The moderate inflammatory reaction (2) observed for 7 d in the subcutaneous tissue decreased with time for all cements. The thickness of inflammatory capsules also presented a significant decrease with time (P<.05). Systemically, all cements caused adverse inflammatory reactions in the liver and kidney, being more evident for MTA, persisting until the end of the analysis. Liver functions increased significantly for MTA during 30 d (P<.05). CONCLUSION: The different cements induced to a locally limited inflammatory reaction. However, from the systemic point of view, the cements promoted significant inflammatory reactions in the liver and kidney. For MTA, the reactions were more accentuated.
[Mh] Termos MeSH primário: Compostos de Alumínio/farmacologia
Compostos de Cálcio/farmacologia
Cimentos Dentários/farmacologia
Rim/efeitos dos fármacos
Fígado/efeitos dos fármacos
Óxidos/farmacologia
Materiais Restauradores do Canal Radicular/farmacologia
Silicatos/farmacologia
[Mh] Termos MeSH secundário: Animais
Materiais Biocompatíveis
Combinação de Medicamentos
Rim/patologia
Fígado/patologia
Masculino
Teste de Materiais
Ratos
Fatores de Tempo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Aluminum Compounds); 0 (Biocompatible Materials); 0 (Calcium Compounds); 0 (Dental Cements); 0 (Drug Combinations); 0 (Oxides); 0 (Root Canal Filling Materials); 0 (Silicates); 0 (mineral trioxide aggregate)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180227
[Lr] Data última revisão:
180227
[Sb] Subgrupo de revista:D; IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE


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[PMID]:29370163
[Au] Autor:Loison-Robert LS; Tassin M; Bonte E; Berbar T; Isaac J; Berdal A; Simon S; Fournier BPJ
[Ad] Endereço:School of Dentistry, Paris Descartes University, Sorbonne Paris Cité, Paris, France.
[Ti] Título:In vitro effects of two silicate-based materials, Biodentine and BioRoot RCS, on dental pulp stem cells in models of reactionary and reparative dentinogenesis.
[So] Source:PLoS One;13(1):e0190014, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Calcium silicate-based cements are biomaterials with calcium oxide and carbonate filler additives. Their properties are close to those of dentin, making them useful in restorative dentistry and endodontics. The aim of this study was to evaluate the in vitro biological effects of two such calcium silicate cements, Biodentine (BD) and Bioroot (BR), on dental stem cells in both direct and indirect contact models. The two models used aimed to mimic reparative dentin formation (direct contact) and reactionary dentin formation (indirect contact). An original aspect of this study is the use of an interposed thin agarose gel layer to assess the effects of diffusible components from the materials. RESULTS: The two biomaterials were compared and did not modify dental pulp stem cell (DPSC) proliferation. BD and BR showed no significant cytotoxicity, although some cell death occurred in direct contact. No apoptosis or inflammation induction was detected. A striking increase of mineralization induction was observed in the presence of BD and BR, and this effect was greater in direct contact. Surprisingly, biomineralization occurred even in the absence of mineralization medium. This differentiation was accompanied by expression of odontoblast-associated genes. Exposure by indirect contact did not stimulate the induction to such a level. CONCLUSION: These two biomaterials both seem to be bioactive and biocompatible, preserving DPSC proliferation, migration and adhesion. The observed strong mineralization induction through direct contact highlights the potential of these biomaterials for clinical application in dentin-pulp complex regeneration.
[Mh] Termos MeSH primário: Materiais Dentários
Polpa Dentária/efeitos dos fármacos
Dentina/efeitos dos fármacos
Silicatos/farmacologia
Células-Tronco/efeitos dos fármacos
[Mh] Termos MeSH secundário: Materiais Biocompatíveis
Proliferação Celular/efeitos dos fármacos
Citoesqueleto/efeitos dos fármacos
Polpa Dentária/citologia
Polpa Dentária/metabolismo
Matriz Extracelular/efeitos dos fármacos
Seres Humanos
Concentração de Íons de Hidrogênio
Técnicas In Vitro
Microscopia Eletrônica de Varredura
Modelos Biológicos
Estresse Oxidativo/efeitos dos fármacos
RNA Mensageiro/metabolismo
Reação em Cadeia da Polimerase em Tempo Real
Células-Tronco/citologia
Células-Tronco/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Biocompatible Materials); 0 (Dental Materials); 0 (RNA, Messenger); 0 (Silicates)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180126
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190014


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[PMID]:29341577
[Au] Autor:Biocanin V; Milic M; Vucetic M; Vasovic M; Zivadinovic D; Zivadinovic M; Cetkovic D; Calasan D; Brkovic B
[Ti] Título:Apical root-end filling with tricalcium silicate-based cement in a patient with diabetes mellitus: A case report.
[So] Source:Vojnosanit Pregl;73(12):1173-7, 2016 Dec.
[Is] ISSN:0042-8450
[Cp] País de publicação:Serbia
[La] Idioma:eng
[Ab] Resumo:Introduction: The material used for root-end filling has to be biocompatible with adjacent periapical tissue and to stimulate its regenerative processes. Tricalcium silicate cement (TSC), as a new dental material, shows good sealing properties with dentin, high compression strengths and better marginal adaptation than commonly used root-end filling materials. Although optimal postoperative healing of periapical tissues is mainly influenced by characteristics of end-root material used, it could sometimes be affected by the influence of systemic diseases, such as diabetes mellitus (DM). Case report: We presented apical healing of the upper central incisor, retrofilled with TSC, in a diabetic patient (type 2 DM) with peripheral neuropathy. Standard root-end resection of upper central incisor was accompanied by retropreparation using ultrasonic retrotips to the depth of 3 mm and retrofilling with TSC. Post-operatively, the surgical wound healed uneventfully. However, the patient reported undefined dull pain in the operated area that could possibly be attributed to undiagnosed intraoral diabetic peripheral neuropathy, what was evaluated clinically. Conclusion: Although TSC presents a suitable material for apical root-end filling in the treatment of chronic periradicular lesions a possible presence of systemic diseases, like type 2 DM, has to be considered in the treatment outcome estimation.
[Mh] Termos MeSH primário: Compostos de Cálcio/uso terapêutico
Diabetes Mellitus Tipo 2/complicações
Neuropatias Diabéticas/etiologia
Doenças Periapicais/cirurgia
Materiais Restauradores do Canal Radicular/uso terapêutico
Obturação do Canal Radicular
Silicatos/uso terapêutico
[Mh] Termos MeSH secundário: Diabetes Mellitus Tipo 2/diagnóstico
Diabetes Mellitus Tipo 2/fisiopatologia
Neuropatias Diabéticas/diagnóstico
Neuropatias Diabéticas/fisiopatologia
Seres Humanos
Masculino
Meia-Idade
Percepção da Dor
Limiar da Dor
Dor Pós-Operatória/complicações
Dor Pós-Operatória/fisiopatologia
Doenças Periapicais/complicações
Doenças Periapicais/diagnóstico por imagem
Radiografia Dentária
Obturação do Canal Radicular/efeitos adversos
Resultado do Tratamento
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Calcium Compounds); 0 (Root Canal Filling Materials); 0 (Silicates); 404G39282C (tricalcium silicate)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180213
[Lr] Data última revisão:
180213
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180118
[St] Status:MEDLINE
[do] DOI:10.2298/VSP150606137B


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[PMID]:29360830
[Au] Autor:Sahin K; Orhan C; Tuzcu M; Hayirli A; Komorowski JR; Sahin N
[Ad] Endereço:Department of Animal Nutrition and Nutritional Disorders, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey.
[Ti] Título:Effects of dietary supplementation of arginine-silicate-inositol complex on absorption and metabolism of calcium of laying hens.
[So] Source:PLoS One;13(1):e0189329, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The effects of supplementation of arginine-silicate-inositol complex (ASI; 49.5-8.2-25 g/kg, respectively) to laying hens were investigated with respect to eggshell quality, calcium (Ca) balance, and expression of duodenal proteins related to Ca metabolism (calbindin and tight junction proteins). A total of 360 laying hens, 25 weeks old, were divided into 3 groups consisting of 6 replicate of cages, 20 birds per cage. The groups were fed a basal diet and the basal diet supplemented with 500 or 1000 mg ASI complex per kilogram for 90 days. Data were analyzed by ANCOVA using data during the first week of the adaptation period as covariates. As the ASI complex supplementation level increased, there were increases in feed intake (P < 0.0001), egg production (P < 0.001), egg weight (P < 0.0001) and eggshell weight (P < 0.001) weight, and shell thickness (P < 0.001) and decreases in feed conversion ratio and cracked egg percentage (P < 0.0001 for both). Concentrations of serum osteocalcin (P < 0.0001), vitamin D (P < 0.0001), calcium (P < 0.001), phosphorus (P < 0.001), and alkaline phosphatase (P < 0.008) as well as amounts of calcium retention (P < 0.0001) and eggshell calcium deposition (P < 0.001), and Ca balance (P < 0.0001) increased, whereas amount of calcium excretion (P < 0.001) decreased linearly in a dose-dependent manner. The ASI complex supplementation increased expressions of calcium transporters (calbindin-D28k, N sodium-calcium exchanger, plasma membrane calcium ATPase, and vitamin D receptor) and tight junction proteins (zonula occludens-1 and occludin) in the duodenum in a linear fashion (P < 0.0001 for all). In conclusion, provision of dietary ASI complex to laying hens during the peak laying period improved eggshell quality through improving calcium utilization as reflected by upregulation of genes related to the calcium metabolism. Further studies are needed to elucidate the contribution of each of the ASI complex ingredients.
[Mh] Termos MeSH primário: Arginina/administração & dosagem
Cálcio/metabolismo
Suplementos Nutricionais
Inositol/administração & dosagem
Silicatos/administração & dosagem
[Mh] Termos MeSH secundário: Animais
Galinhas
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Silicates); 4L6452S749 (Inositol); 94ZLA3W45F (Arginine); SY7Q814VUP (Calcium)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180206
[Lr] Data última revisão:
180206
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180124
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189329


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[PMID]:27775623
[Au] Autor:Jung SJ; Hong SK; Kwon OK
[Ad] Endereço:Department of Electronics and Computer Engineering, Hanyang University, Seoul 133-791, Korea. sj820831@hanyang.ac.kr.
[Ti] Título:A Readout IC Using Two-Step Fastest Signal Identification for Compact Data Acquisition of PET Systems.
[So] Source:Sensors (Basel);16(10), 2016 Oct 20.
[Is] ISSN:1424-8220
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:A readout integrated circuit (ROIC) using two-step fastest signal identification (FSI) is proposed to reduce the number of input channels of a data acquisition (DAQ) block with a high-channel reduction ratio. The two-step FSI enables the proposed ROIC to filter out useless input signals that arise from scattering and electrical noise without using complex and bulky circuits. In addition, an asynchronous fastest signal identifier and a self-trimmed comparator are proposed to identify the fastest signal without using a high-frequency clock and to reduce misidentification, respectively. The channel reduction ratio of the proposed ROIC is 16:1 and can be extended to 16 × :1 using ROICs. To verify the performance of the two-step FSI, the proposed ROIC was implemented into a gamma photon detector module using a Geiger-mode avalanche photodiode with a lutetium-yttrium oxyorthosilicate array. The measured minimum detectable time is 1 ns. The difference of the measured energy and timing resolution between with and without the two-step FSI are 0.8% and 0.2 ns, respectively, which are negligibly small. These measurement results show that the proposed ROIC using the two-step FSI reduces the number of input channels of the DAQ block without sacrificing the performance of the positron emission tomography (PET) systems.
[Mh] Termos MeSH primário: Tomografia por Emissão de Pósitrons/métodos
[Mh] Termos MeSH secundário: Desenho de Equipamento
Limite de Detecção
Lutécio/química
Silicatos/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Silicates); 0 (lutetium orthosilicate); 5H0DOZ21UJ (Lutetium)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180205
[Lr] Data última revisão:
180205
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161025
[St] Status:MEDLINE



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