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Shuji Suzuki, Shatha Al-Hajjaj, Margaret Lee, Jag Bhawan
It is relatively rare to find syringocystadenoma papilliferum (SCAP) outside the head and neck region and extremely rare in the anogenital area. Characteristic histological features such as cystic invaginations, glandular epithelium showing decapitation secretion, and stroma with plasma cells are important for making the diagnosis. We present a rare case of SCAP on the mons pubis of a 13-year-old girl and compare cases of SCAP from other rare locations.
April 14, 2018: Dermatology Online Journal
Rongshuang Yuan, Xue Tao, Shuang Liang, Yan Pan, Li He, Jinghui Sun, Ju Wenbo, Xiangyan Li, Jianguang Chen, Chunmei Wang
AIM: Schisandra chinensis is a well-known traditional Chinese medicine used mainly as a recipe for hepatoprotection. Modern researches have revealed that the hepatoprotection is related to its lignans and crude polysaccharide. In this study, we examined the effect and mechanism of Schisandra chinensis acidic polysaccharide (SCAP) on the liver injury induced by ethanol. MAIN METHODS: SCAP was extracted with water extraction and ethanol precipitation. Liver injury models of both mice and HepG2 cells were produced by ethanol...
March 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Hidetoshi Tsushima, Yuning J Tang, Vijitha Puviindran, Shu-Hsuan Claire Hsu, Puviindran Nadesan, Chunying Yu, Hongyuan Zhang, Anthony J Mirando, Matthew J Hilton, Benjamin A Alman
During enchondral ossification, mesenchymal cells express genes regulating the intracellular biosynthesis of cholesterol and lipids. Here we investigated conditional deletion of Scap or Insig1 and Insig2 (inhibits or activates intracellular biosynthesis respectively). Mesenchymal condensation and chondrogenesis was disrupted in mice lacking Scap in mesenchymal progenitors, while mice lacking the Insig genes in mesenchymal progenitors had short limbs, but normal chondrogenesis. Mice lacking Scap in chondrocytes showed severe dwarfism, with ectopic hypertrophic cells, while deletion of Insig genes in chondrocytes caused a mild dwarfism and shorting of the hypertrophic zone...
June 13, 2018: Development
Jelena Simonovic, Bosko Toljic, Nadja Nikolic, Jasna Vujin, Radmila Panajotovic, Rados Gajic, Elena Bekyarova, Amelia Cataldi, Vladimir Parpura, Jelena Milasin
Stem cell-based therapies are considered a promising treatment modality for many medical conditions. Several types of stem cells with variable differentiation potentials have been isolated from dental tissues, among them stem cells from apical papilla (SCAP). In parallel, new classes of biocompatible nanomaterials have also been developed, including graphene and carbon nanotube-based materials. The aim of the study was to assess whether graphene dispersion (GD) and water-soluble single walled carbon nanotubes (ws-SWCNT), may enhance SCAPs capacity to undergo neural differentiation...
June 12, 2018: Journal of Biomedical Materials Research. Part A
A Gaudin, M Tolar, O A Peters
Similar to the onset phase of inflammation, its resolution is a process that unfolds in a manner that is coordinated and regulated by a panel of mediators. Lipoxin A4 (LXA4 ) has been implicated as an anti-inflammatory, pro-resolving mediator. We hypothesized that LXA4 attenuates or prevents an inflammatory response via the immunosuppressive activity of Stem Cells of the Apical Papilla (SCAP). Here, we report for the first time in vitro that in a SCAP population, lipoxin receptor ALX/FPR2 was constitutively expressed and upregulated after stimulation with lipopolysaccharide and/or TNF-α...
June 11, 2018: Scientific Reports
Dean Whiting, Whasun Oh Chung, James D Johnson, Avina Paranjpe
INTRODUCTION: Dental stem cells have gained importance recently and are being used for various purposes in regenerative medicine and dentistry. Although much research has been done to show the various properties of these dental stem cells, the immunomodulatory properties of some of these stem cells are still unknown. This is important considering these cells are being used routinely. Therefore, the aim of this study was to investigate the interactions between the activated immune cells and 3 types of dental-derived mesenchymal stem cells: dental pulp stem cells, stem cells from human exfoliated deciduous teeth, and stem cells of the apical papilla (SCAP)...
June 5, 2018: Journal of Endodontics
Yuan Zhu, Ping Zhang, Ran Li Gu, Yun Song Liu, Yong Sheng Zhou
Over the past few decades, scientific research into neural crest-derived stem cells has progressed rapidly. The migration and differentiation of neural crest-derived stem cells has been an interesting area of research. Stem cells within teeth originating from the embryonic neural crest have attracted increasing attention in clinical and scientific research because they are easy to obtain and have superb stemness. The stem cells within the teeth include dental pulp stem cells (DPSCs), dental follicle stem cells (DFSCs), stem cells from apical papilla (SCAPs), stem cells from human exfoliated deciduous teeth (SHEDs), and periodontal ligament stem cells (PDLSCs)...
2018: Chinese Journal of Dental Research
Jun Inoue, Shingo Miyata, Makoto Shimizu, Ryuichiro Sato
Sterol regulatory element-binding proteins (SREBPs) are transcription factors that regulate a wide variety of genes involved in fatty acid and cholesterol synthesis. In the present study, we identified that isoxanthohumol (IXN) suppressed SREBP activity. Low concentrations of IXN (10 and 30 μM) reduced the amount of mature forms of SREBPs, while high concentration of IXN (100 μM) reduced both precursor and mature forms of SREBPs in Huh-7 cells. The IXN-mediated decrease in the precursor forms of SREBPs in Huh-7 cells was completely abolished by culturing cells under sterol-supplemented conditions and was partly abolished by treatment with a proteasome inhibitor, MG132, but not a lysosome inhibitor, NH4 Cl...
May 26, 2018: Bioscience, Biotechnology, and Biochemistry
Xiang Cheng, Jianying Li, Deliang Guo
Lipid metabolism reprogramming emerges as a new hallmark of malignancies. Sterol regulatory element-binding proteins (SREBPs), which are central players in lipid metabolism, are endoplasmic reticulum (ER)-bound transcription factors that control the expression of genes important for lipid synthesis and uptake. Their transcriptional activation requires binding to SREBP cleavage-activating protein (SCAP) to translocate their inactive precursors from the ER to the Golgi to undergo cleavage and subsequent nucleus translocation of their NH2-terminal forms...
May 22, 2018: Current Topics in Medicinal Chemistry
Tingxian Deng, Xiaoya Ma, Chunying Pang, Shasha Liang, Xingrong Lu, Anqin Duan, Xianwei Liang
The study reported in this Research Communication was conducted to investigate the molecular characterisation of buffalo SCAP gene, expression analysis, and the association between single nucleotide polymorphisms and milk production traits in 384 buffaloes. Sequence analysis revealed the SCAP gene had an open reading frame of 3837 bp encoding 1279 amino acids. A ubiquitous expression profile of SCAP gene was detected in various tissues with extreme predominance in the mammary gland during early lactation. Moreover, eleven SNPs in buffalo SCAP gene were identified, six of them (g...
May 2018: Journal of Dairy Research
Y Chae, M Yang, J R Kim
AIM: To investigate the release of growth factors into the root canal space after various final irrigants during regenerative endodontic procedures. The residual cytotoxic effect of final irrigants on stem cells from the apical papilla (SCAP) was also examined. METHODOLOGY: To measure the release of TGF-β1, root segments (8mm long) were irrigated with 1.5% NaOCl followed by 20 mL of final irrigants; Saline, 17% EDTA, 10% citric acid, 10% or 37% phosphoric acid...
May 17, 2018: International Endodontic Journal
Shebin Hong, Weiting Chen, Beizhan Jiang
INTRODUCTION: Concentrated growth factor (CGF) is considered to be a natural biomaterial that is better than platelet-rich fibrin (PRF) in bone regeneration, but there is little information acquired in regenerative endodontics. Therefore, the purpose of this study was to evaluate their effects on the proliferation, migration, and differentiation of human stem cells of the apical papilla (SCAPs). METHODS: CGF- and PRF-conditioned medium were prepared using the freeze-dried method...
April 24, 2018: Journal of Endodontics
Niusha Hajizadeh, Zahra Sadat Madani, Ebrahim Zabihi, Moniyreh Golpour, Amir Zahedpasha, Mousa Mohammadnia
Introduction: This study assessed the effect of mineral trioxide aggregate (MTA) and calcium-enriched mixture (CEM) cement on odontogenic differentiation and mineralization of stem cells. Methods and Materials: After confirmation of stemness and homogeneity of stem cells derived from apical papilla (SCAPs) using flow cytometry, the cells were exposed for 3 weeks to either osteogenic medium (OS) or CEM extract+OS (CEM+OS) or MTA extract in OS (MTA+OS) or DMEM based regular culture media (negative control)...
2018: Iranian Endodontic Journal
Haijiang Zhou, Shubin Guo, Tianfei Lan, Shuai Ma, Fang Zhang, Zhiling Zhao
OBJECTIVE: Community-acquired pneumonia (CAP) is a common presentation to the emergency department (ED) and has high mortality rates. The aim of our study is to investigate the risk stratification and prognostic prediction value of precalcitonin (PCT) and clinical severity scores on patients with CAP in ED. METHODS: 226 consecutive adult patients with CAP admitted in ED of a tertiary teaching hospital were enrolled. Demographic information and clinical parameters including PCT levels were analyzed...
March 21, 2018: American Journal of Emergency Medicine
L Q Han, T Y Gao, G Y Yang, J J Loor
Fatty acid synthase is a key enzyme for the synthesis of milk fat in the ruminant mammary gland. In nonruminants, sterol regulatory element binding protein 1 (SREBP1) is a regulator of FASN gene expression, and SREBF chaperone (SCAP) is essential for SREBP1 maturation and activity. However, the role of SCAP on the regulation of FASN gene expression in ruminants is unknown. The objective of this study was to investigate the transcriptional regulation of FASN by overexpressing SCAP in bovine mammary epithelial cells...
April 18, 2018: Journal of Dairy Science
Lijun Wang, Haoqing Yang, Xiao Lin, Yangyang Cao, Peipei Gao, Ying Zheng, Zhipeng Fan
OBJECTIVES: Dental tissue-derived mesenchymal stem cells (MSCs)-mediated pulp-dentin regeneration is considered a potential approach for the regeneration of damaged teeth. Enhancing MSC-mediated pulp-dentin regeneration is based on an understanding of the molecular mechanisms underlying directed cell differentiation process. Histone demethylation enzyme, lysine demethylase 1A (KDM1A) can regulate the differentiation of some MSCs, but its role in dental tissue-derived MSCs is unclear. MATERIAL AND METHODS: We obtained SCAPs from immature teeth...
April 15, 2018: Cell Proliferation
Claudia Denke, Felix Balzer, Mario Menk, Sebastian Szur, Georg Brosinsky, Sascha Tafelski, Klaus-Dieter Wernecke, Maria Deja
Objective Delirium in critically ill patients is considered a risk factor for various long-term consequences. We evaluated delirium and associated long-term outcomes in patients with acute respiratory distress syndrome with non-H1N1 and H1N1- associated severe community-acquired pneumonia (sCAP) who had been recommended to take antiviral drugs associated with delirious symptoms as adverse effects. Methods Of 64 patients, 42 survivors (H1N1, 15; non-H1N1, 27) were analyzed regarding the relationship between medication and the duration of delirium in the intensive care unit...
January 1, 2018: Journal of International Medical Research
Nan Ouyang, Hua Gan, Quan He, Han Lei, Stephen Y Wang, Qing Liu, Chao Zhou
Crosstalk occurs between dyslipidemia and chronic inflammation, which are both precipitants of atherosclerosis. Sterol regulatory element binding proteins cleavage-activating protein (SCAP) plays a key role in regulating cholesterol homeostasis. The present study investigated the effects of SCAP dysfunction on the expression of inflammatory cytokines and lipid metabolism in THP-1 macrophages. Intracellular cholesterol content was assessed by Oil Red O staining and quantitative assays. The expression of SCAP, HMGCR, pro-IL-1β and N-SREBP2, p65(N) in the nucleus were examined by real-time quantitative RT-PCR and Western blotting...
June 15, 2018: Experimental Cell Research
Fereshteh Karamali, Mohammad-Hossein Nasr Esfahani, Sara Taleahmad, Leila Satarian, Hossein Baharvand
Recently, we have found that human stem cells from apical papilla (SCAP) show a stromal cell-derived inducing activity (SDIA). To examine SDIA competence for retinal cells differentiation, we co-cultured SCAP with human pluripotent stem cells (hPSCs). In comparison with Matrigel-cultured hPSCs, SCAP significantly induces hPSCs to differentiate into rostral neural cells as demonstrated by upregulation of OTX2 and PAX6 and down-regulation of EN1, HOXB4 and HOXC8. Furthermore, the differentiated cells on SCAP significantly expressed eye-field markers, RAX, PAX6, LHX2 and SIX3 and showed five folds pigmented colonies...
March 2, 2018: Differentiation; Research in Biological Diversity
Vasilije Stambolija, Martina Miklić Bublić, Marin Lozić, Jakob Nemir, Miroslav Ščap
Background: Low brain tissue oxygen tension (PbtO2 ), or brain hypoxia, is an independent predictor of poor outcome. Increasing inspirational fraction of oxygen could have a significant influence on treating lower PbtO2 . Combined PbtO2 therapy, compared to the approach that focus only on regulation of cerebral perfusion pressure and intracranial pressure, shows better patient outcomes. Monitoring of PbtO2 could be helpful in individualizing treatment, preventing or limiting secondary brain injury, and maintaining better patient outcome...
2018: Surgical Neurology International
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