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https://www.readbyqxmd.com/read/28551439/cloning-and-characterization-of-thermo-alkalistable-and-surfactant-stable-endoglucanase-from-puga-hot-spring-metagenome-of-ladakh-j-k
#1
Puneet Gupta, Arjun K Mishra, Jyoti Vakhlu
A thermo-alkalistable and surfactant stable endoglucanase (PHS) gene consisting of 554 amino acids was identified from metagenomic library of Puga hot spring using functional screening. PHS gene was overexpressed and purified to homogeneity using affinity chromatography The purified PHS protein presented a single band of 60kDa on the SDS-PAGE gel and zymogram. The recombinant PHS exhibited activity over a broad range of pH and temperature with optima at pH 8.0 and 65°C, respectively and having optimum stability at 60°C and pH 8...
May 24, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28551240/jackfruit-artocarpus-heterophyllus-lam-peel-a-better-source-of-antioxidants-and-a-glucosidase-inhibitors-than-pulp-flake-and-seed-and-phytochemical-profile-by-hplc-qtof-ms-ms
#2
Lu Zhang, Zong-Cai Tu, Xing Xie, Hui Wang, Hao Wang, Zhen-Xing Wang, Xiao-Mei Sha, Yu Lu
Jackfruit (Artocarpus heterophyllus Lam.) peel is an underutilized by-product in both, the production and processing of jackfruit. This research compared the antioxidant and hypoglycemic potential of jackfruit peel with jackfruit pulp, flake and seed for the first time. The phytochemical profile of peel extract was characterized with HPLC-QTOF-MS/MS. Results revealed that peel extract exhibited the highest total phenolic and total flavonoid content, and the phenolics was 4.65, 4.12 and 4.95 times higher than that of pulp, flake and seed extract, respectively...
November 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28551236/variability-of-traits-and-bioactive-compounds-in-the-fruit-and-pulp-of-six-mamey-apple-mammea-americana-l-accessions
#3
Armelle Péroumal, Sandra Adenet, Katia Rochefort, Louis Fahrasmane, Guylène Aurore
Our objective was to compare fruit morphology, physico-chemistry and bioactive compounds content of the edible pulp of six Mammea americana accessions. The results showed that this fruit was rather big, weighing on average 600 to 1100g depending on the accession, and spherical to oblate-shaped. The pulp represented between 50 and 70% of the weight of the whole fruit. The pulp adhered only partially to the seeds in 5 of the 6 accessions studied, while the last one exhibited full adherence. The fresh pulp was acidic, sweet, succulent and crunchy...
November 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28551224/in-vitro-approaches-to-assess-the-effects-of-a%C3%A3-ai-euterpe-oleracea-digestion-on-polyphenol-availability-and-the-subsequent-impact-on-the-faecal-microbiota
#4
Randah M Alqurashi, Sehad N Alarifi, Gemma E Walton, Adele F Costabile, Ian R Rowland, Daniel M Commane
A considerable proportion of dietary plant-polyphenols reach the colon intact; determining the effects of these compounds on colon-health is of interest. We hypothesise that both fibre and plant polyphenols present in açai (Euterpe oleracea) provide prebiotic and anti-genotoxic benefits in the colon. We investigated this hypothesis using a simulated in vitro gastrointestinal digestion of açai pulp, and a subsequent pH-controlled, anaerobic, batch-culture fermentation model reflective of the distal region of the human large intestine...
November 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28550188/recommendations-for-splenectomy-in-hereditary-hemolytic-anemias
#5
Achille Iolascon, Immacolata Andolfo, Wilma Barcellini, Francesco Corcione, Loïc Garçon, Lucia De Franceschi, Claudio Pignata, Giovanna Graziadei, Dagmar Pospisilova, David C Rees, Mariane de Montalembert, Stefano Rivella, Antonella Gambale, Roberta Russo, Leticia Ribeiro, Jules Vives-Corrons, Patricia Aguilar-Martinez, Antonis Kattamis, Beatrice Gulbis, Maria Domenica Cappellini, Irene Roberts, Hannah Tamary
Hereditary hemolytic anemias are a group of disorders including red cell membrane defects, red blood cells enzyme disorders, congenital dyserythropoietic anemias, thalassemia syndromes and haemoglobinopathies. As damaged red blood cells passing through the spleen red pulp are efficiently removed by splenic macrophages, splenectomy is one possible therapeutic approach to the management of severely affected patients. However, except for hereditary spherocytosis for which the effectiveness of splenectomy has been well documented, the efficacy of splenectomy in other anemias within this group has yet to be determined and there are concerns regarding short- and long-term infectious and thrombotic complications...
May 26, 2017: Haematologica
https://www.readbyqxmd.com/read/28549863/isolation-and-characterization-of-microcrystalline-cellulose-from-roselle-fibers
#6
Lau Kia Kian, Mohammad Jawaid, Hidayah Ariffin, Othman Y Alothman
In this study, microcrystalline cellulose (MCC) was extracted from roselle fiber through acid hydrolysis treatment and its properties were compared with those of commercially available MCC. The physicochemical and morphological characteristics, elemental composition, size distribution, crystallinity and thermal properties of the obtained MCC were analyzed in this work. Fourier transform infrared spectroscopy (FTIR) analysis provided clear evidence that the characteristic peak of lignin was absent in the spectrum of the MCC prepared from roselle fiber...
May 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28549486/the-effect-of-chlormadinone-acetate-on-odontogenic-differentiation-of-human-dental-pulp-cells-in-vitro-study
#7
Se-Min Kim, Bin-Na Lee, Jeong-Tae Koh, Hoon-Sang Chang, In-Nam Hwang, Won-Mann Oh, Kyung-San Min, Yun-Chan Hwang
BACKGROUND: Chlormadinone acetate (CMA) is a derivative of progesterone and is used as an oral contraceptive. The aim of this study was to investigate the effects of CMA on odontogenic differentiation and mineralization of human dental pulp cells (hDPCs) and related signaling pathways. METHODS: Cell viability was determined by the water-soluble tetrazolium (WST)-1 assay. Odontogenic differentiation of hDPCs was evaluated by real-time polymerase chain reaction using odontogenic marker genes, such as alkaline phosphatase (ALP), osteocalcin (OCN), dentin sialophosphoprotein (DSPP), and dentin matrix protein-1 (DMP-1)...
May 26, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28549251/enhanced-methane-production-and-its-kinetics-model-of-thermally-pretreated-lignocellulose-waste-material
#8
C Veluchamy, Ajay S Kalamdhad
The objective of the study was to assess the effect of substrate concentration by specific methanogenic activity (SMA) of thermally pretreated pulp and paper mill sludge. Different substrate concentration through food to microorganism ratio varied from 1.0 to 3.0 was carried out in a mesophilic condition as biochemical methane potential assay. Experimental results offered that cellulose removal rate spikes up to 60.2%. The specific methane gas production and biodegradability were increased up to 303mL of CH4/g VS and 73% respectively...
May 15, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28547659/quiescent-adult-stem-cells-in-murine-teeth-are-regulated-by-shh-signaling
#9
Yuko Ishikawa, Mitsushiro Nakatomi, Hiroko Ida-Yonemochi, Hayato Ohshima
The mechanisms regulating the maintenance of quiescent adult stem cells in teeth remain to be fully elucidated. Our aim is to clarify the relationship between BrdU label-retaining cells (LRCs) and sonic hedgehog (Shh) signaling in murine teeth. After prenatal BrdU labeling, mouse pups were analyzed during postnatal day 1 (P1) to week 5 (P5W). Paraffin sections were processed for immunohistochemistry for BrdU, Sox2, Gli1, Shh, Patched1 (Ptch1) and Ki67 and for in situ hybridization for Shh and Ptch1. Dense LRCs, Gli1-(+) cells and Ptch1-(+) cells were co-localized in the outer enamel epithelium of the apical bud and apical dental papilla of incisors...
May 26, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28547570/the-effect-of-iloprost-on-cell-proliferation-and-angiogenesis-related-gene-expression-in-human-periodontal-ligament-cells
#10
Thanomsuk Jearanaiphaisarn, Teeranuch Sanharati, Prasit Pavasant, Chalida Nakalekha Limjeerajarus
Periodontal ligament is considered a rich source of mesenchymal stem cells for pulp regeneration. This study investigated the effect of iloprost, a prostacyclin analog, on cell proliferation and the expression of angiogenesis-related genes in human periodontal ligament cells (hPDLs) in vitro. The hPDLs were treated with 10(-9)-10(-6) M iloprost for 1, 6 and 24 h. Cell proliferation was determined by an MTT assay. Vascular endothelial growth factor (VEGF), alpha-1 type I collagen (COL1), and basic fibroblast growth factor (bFGF) mRNA expression were determined by semi-quantitative and qPCR...
May 25, 2017: Odontology
https://www.readbyqxmd.com/read/28546811/antimicrobial-activity-of-a-cationic-guanidine-compound-against-two-pathogenic-oral-bacteria
#11
E Escamilla-García, A G Alcázar-Pizaña, J C Segoviano-Ramírez, C Del Angel-Mosqueda, A P López-Lozano, E Cárdenas-Estrada, M A De La Garza-Ramos, C E Medina-De La Garza, M Márquez
This study evaluated the potential antimicrobial properties of a polyguanidine (CatDex) on two oral bacteria. Chlorhexidine gluconate 1340 μmoL L(-1) (CHX 0.12%) was used as control. Streptococcus mutans (S. mutans) and Porphyromonas gingivalis (P. gingivalis) were grown in BHI media. Bacterial sensitivity and antimicrobial activity were determined by the minimum inhibitory concentration (MIC) and Kirby-Bauer methods. To study side effects, that is, toxicity, dental pulp stem cells (DPSCs) were used. Fluorometric cytotoxicity and confocal microscopy assays were used in order to test cell viability...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28545523/l-mimosine-and-hypoxia-can-increase-angiogenin-production-in-dental-pulp-derived-cells
#12
Klara Janjić, Michael Edelmayer, Andreas Moritz, Hermann Agis
BACKGROUND: Angiogenin is a key molecule in the healing process which has been successfully applied in the field of regenerative medicine. The role of angiogenin in dental pulp regeneration is unclear. Here we aimed to reveal the impact of the hypoxia mimetic agent L-mimosine (L-MIM) and hypoxia on angiogenin in the dental pulp. METHODS: Human dental pulp-derived cells (DPC) were cultured in monolayer and spheroid cultures and treated with L-MIM or hypoxia. In addition, tooth slice organ cultures were applied to mimic the pulp-dentin complex...
May 25, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28545325/mandibular-odontoameloblastoma-in-a-rat-and-a-horse
#13
Brian Murphy, Cynthia Bell, Amanda Koehne, Richard R Dubielzig
Odontoameloblastoma (OA) is a mixed odontogenic tumor that is an ameloblastoma with concurrent histologic evidence of odontoma differentiation. As a mixed tumor, OA is a tripartite lesion comprised of neoplastic odontogenic epithelium, induced dental ectomesenchyme (dental pulp), and mineralized dental matrix. Although rare, OA represents a diagnostic conundrum, as it is histologically closely related to 2 other mixed odontogenic tumors: odontoma (complex and compound) and ameloblastic fibro-odontoma. Herein we describe an OA arising from the mandible of a 4-mo-old Fischer 344 rat that had been exposed in utero to the mutagen ENU (N-ethyl-N-nitrosourea), and a naturally occurring lesion in a 2-y-old Appaloosa horse...
May 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28544201/influence-of-highly-porous-electrospun-plga-pcl-nha-fibrous-scaffolds-on-the-differentiation-of-tooth-bud-cells-in-vitro
#14
Xinjie Cai, Sofie Ten Hoopen, Weibo Zhang, Charles Yi, Wanxun Yang, Fang Yang, John A Jansen, X Frank Walboomers, Pamela C Yelick
In this study, we investigated the use of three-dimensional electrospun poly(lactic-co-glycolic acid)/poly(ε-caprolactone) (PLGA/PCL) scaffolds seeded and cultured with postnatal dental cells, for improved dental tissue regeneration. Wet-electrospinning combined with ultrasonic treatment was studied as a method to enhance scaffold porosity and to promote cell-cell interactions. We also investigated whether nano-hydroxyapatite (nHA) incorporation could enhance dental cell differentiation. All scaffolds were seeded with human tooth pulp-derived dental mesenchymal (hDM) cells, or a combination of hDM and pig dental epithelial (pDE) cells, cultured for up to 28 days...
May 24, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28543860/a-unique-case-of-bilateral-ovarian-splenosis-and-review-of-the-literature
#15
Maria Giulia Disanto, Francesca Mercalli, Andrea Palicelli, Alberto Arnulfo, Renzo Boldorini
Splenosis is an acquired anomaly related to heterotopic auto-transplantation of splenic tissue following abdominal trauma or splenectomy. We report the first definitive bilateral ovarian case in a 65-year-old woman who underwent splenectomy following a motor vehicle accident 44 years prior to presentation. We review the literature and discuss the main differential diagnoses. Gross examination revealed a 1-cm well-circumscribed dark nodule on the surface of each ovary. Paraffin-embedded, formalin-fixed blocks were sectioned and stained with hematoxylin-eosin and immunostains (CK5/6, Calretinin, WT1, Vimentin)...
May 25, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28542487/characterization-of-micrornas-expression-profiles-in-human-dental-derived-pluripotent-stem-cells
#16
Xiaobing Tan, Qingyuan Dai
Induced pluripotent stem cells (iPSCs) technology provides a powerful means to generate and regenerate unlimited pluripotent stem cells directly from body tissue cells. Stem cells from apical papilla (SCAP) and Dental pulp stem cells (DPSCs) are present in 'cell-rich zones' within the dental pulp region, which are capable of regenerating pulp and dentin tissues in vivo. In this study, we investigated the difference of miRNAs expression in SCAPs and DPSCs before and after the reprogramming. Using miRNA microarray, 134 and 265 differentially expressed miRNAs in DPSCs- and SCAP-iPSCs were up-regulated compared to these before reprogramming...
2017: PloS One
https://www.readbyqxmd.com/read/28541740/controlling-aedes-albopictus-and-culex-pipiens-pallens-using-silver-nanoparticles-synthesized-from-aqueous-extract-of-cassia-fistula-fruit-pulp-and-its-mode-of-action
#17
Hatem Fouad, Li Hongjie, Dawood Hosni, Jiqian Wei, Ghulam Abbas, Hassan Ga'al, Mo Jianchu
Mosquitoes act as key vector for transmission of devastating parasites and pathogens which affect millions of people globally. In this research, the green synthesis of silver nanoparticles of Cassia fistula fruit pulp as an innovative and operative tool against vector mosquitoes is presented. Silver nanoparticles were characterized by a series of techniques including Fourier transform infrared spectroscopy, Transmission Electron Microscope and confirmed by Scanning Electron Microscope, UV-Vis spectrophotometry and X-ray diffraction...
May 25, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28541393/adrenomedullin-promotes-the-odontogenic-differentiation-of-dental-pulp-stem-cells-through-creb-bmp2-signaling-pathway
#18
Qiang Zhu, Jianyong Gao, Zhen Tang, Jianyong Gao, Yinghui Tan
Adrenomedullin (AM) could promote the proliferation, the odontogenic differentiation and inhibit the apoptosis of dental pulp stem cells (DPSCs). AM in combination with DPSCs may be an effective strategy for pulp repair. However, there was no report on the mechanisms of AM in the odontogenic differentiation of DPSCs. The aim of this study is to investigate the molecular mechanisms through which AM promotes the odontogenic differentiation of DPSCs. Freshly extracted wisdom teeth were obtained from 27 patients...
May 24, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28539292/-gelatin-alginate-hydrogel-scaffolds-prepared-by-3d-bioprinting-promotes-cell-adhesion-and-proliferation-of-human-dental-pulp-cells-in-vitro
#19
Hai-Yue Yu, Dan-Dan Ma, Bu-Ling Wu
OBJECTIVE: To evaluate the cytotoxicity of gelatin/alginate hydrogel scaffolds prepared by 3D bioprinting in human dental pulp cells (HDPCs) and compare the cell adhesion and proliferation of the cells seeded in the biomaterial using two different methods. METHODS: HDPCs isolated by tissue block culture and enzyme digestion were cultured and passaged. Gelatin/alginate hydrogel scaffolds were printed using a bioplotter, and the cytotoxicity of the aqueous extracts of the scaffold material was tested in the third passage of HDPCs using cell counting kit-8...
May 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28537502/suitability-of-different-natural-and-synthetic-biomaterials-for-dental-pulp-tissue-engineering
#20
Kerstin M Galler, Ferdinand Brandl, Susanne Kirchhof, Matthias Widbiller, Andreas Eidt, Wolfgang Buchalla, Achim Goepferich, Gottfried Schmalz
Dental pulp tissue engineering is possible after insertion of pulpal stem cells combined with a scaffold into empty root canals. Commonly used biomaterials are collagen or poly(lactic) acid, which are either difficult to modify or to insert into such a narrow space. New hydrogel scaffolds with bioactive, specifically tailored functions could optimize the conditions to engineer dental pulp. Different synthetic and natural hydrogels were tested for their suitability to engineer dental pulp. Two functionalized modifications of polyethylene glycol were developed in this study and compared to a self-assembling peptide as well as to collagen and fibrin...
May 24, 2017: Tissue Engineering. Part A
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