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pulp inflammation

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https://www.readbyqxmd.com/read/28332168/pulp-bleeding-color-is-an-indicator-of-clinical-and-histohematologic-status-of-primary-teeth
#1
Naser Asl Aaminabadi, Marziyeh Parto, Parya Emamverdizadeh, Zahra Jamali, Sajjad Shirazi
OBJECTIVES: This study was carried out to investigate whether the changes in hematologic characteristic and color of pulpal bleeding is associated with clinical and histologic status of the pulp in primary teeth. MATERIALS AND METHODS: A total of 211 primary molars in 103 patients, 3-6 years old, were treated. One hundred eight teeth had pulpectomy, 57 teeth had pulpotomy after pulp exposure during caries excavation, and 46 teeth had pulpotomy after accidental pulp exposure in sound dentin...
March 23, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28318161/-clinical-comparative-study-on-the-efficacy-of-periodontal-endodontic-therapy-and-periodontal-treatment-alone-for-advanced-periodontitis
#2
Tan Baochun, Xiao Jianping, Yan Fuhua, Huan Hong
OBJECTIVE: This study aimed to explore the period of endodontic treatment and the effects of periodontal-endodontic treatment for advanced periodontitis. METHODS: A total of 180 patients with advanced periodontitis participated in this clinical multicenter study. The respondents were randomly divided into an endodontic combined treatment (experimental) group and a periodontal treatment alone (control) group; each group consisted of 90 teeth. The control group received periodontal therapy only...
December 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28257892/role-of-%C3%AE-1-3-galactosyltransferase-2-in-trigeminal-neuronal-sensitization-induced-by-peripheral-inflammation
#3
Yiheng Lv, Lili Ren, Yunjie Fu, Keqiang Huang, Jing Bi
Glycosyltransferases are enzymes that catalyze the formation of a variety of glycoconjugates. Glycoconjugates play important roles in the nervous system. β-1,3-Galactosyltransferase 2 (B3galt2) belongs to the family of β-1,3-galactosyltransferase, which is one of the major types of glycosyltransferases. Dental pulp inflammation may cause neurophysiological alterations in the trigeminal ganglion (TG), and serve as a good model for investigating the peripheral inflammation and trigeminal neuronal sensitization...
February 28, 2017: Neuroscience
https://www.readbyqxmd.com/read/28253184/idiopathic-external-apical-root-resorption-clinical-report-of-2-cases
#4
Ricardo Machado, Graziela Bianchi Leoni, Pedro Yarid, Antonio Miranda Cruz-Filho, Manoel Damião Sousa-Neto
External root resorptions are characterized by progressive destruction of hard tissue due to clastic activity. This article reports 2 cases that involved the nonsurgical treatment of mandibular molars with idiopathic external root resorption. In the first case, clinical and radiographic examination showed irreversible inflammation of the pulp tissue and resorption of the distal root. Chronic inflammatory infiltrate and necrosis were identified by histopathologic examination of the pulp tissue. In the second case, inadequate endodontic treatment and a resorptive process were observed in the mesial and distal roots...
March 2017: General Dentistry
https://www.readbyqxmd.com/read/28198096/treated-dentin-matrix-paste-as-a-novel-pulp-capping-agent-for-dentin-regeneration
#5
Jinlong Chen, Caiyun Cui, Xiangchen Qiao, Bo Yang, Mei Yu, Weihua Guo, Weidong Tian
Regenerating dentin and preserving pulp vitality are the two key targets for the treatment of dental pulp exposure. Calcium hydroxide (CH), the widely used capping agent, may induce potential tunnel defect in reparative dentin and cause inflammation or even necrosis in pulp tissues. This study aimed to produce a novel pulp capping agent with better bioactivities. Treated dentin matrix (TDM) paste (TDMP) was fabricated consisting of TDM powder and aqueous TDM extract. The chemical and biological characteristics of TDMP were investigated, and its effect on the odontogenic differentiation of dental pulp stem cells explored at gene and protein level; the therapeutic effect for pulp exposure in miniature swine was further verified...
February 15, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28190588/survival-of-the-apical-papilla-and-its-resident-stem-cells-in-a-case-of-advanced-pulpal-necrosis-and-apical-periodontitis
#6
Vanessa Chrepa, Brandon Pitcher, Michael A Henry, Anibal Diogenes
INTRODUCTION: Apical papilla represents a source of an enriched mesenchymal stem cell (MSC) population (stem cells of the apical papilla [SCAPs]) that modulates root development and may participate in regenerative endodontic procedures in immature teeth with pulp necrosis. The characteristics and phenotype of this tissue in the presence of inflammation are largely unknown. The purpose of this study was to characterize a human apical papilla sample that was isolated from an immature tooth with pulp necrosis and apical periodontitis...
February 9, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28190584/the-effects-of-m1-and-m2-macrophages-on-odontogenic-differentiation-of-human-dental-pulp-cells
#7
Hee Chul Park, Hongxuan Quan, Tingting Zhu, Yongjoon Kim, Bongju Kim, Hyeong-Cheol Yang
INTRODUCTION: M1 (classically activated) and M2 (alternatively activated) macrophages are known to play primary roles in inflammation and tissue regeneration. To investigate the role of macrophages in dentin regeneration, this study examined the effects of M1 and M2 macrophages on the odontogenic/osteogenic differentiation of human dental pulp cells (HDPCs) using the conditioned media (CM) of the activated human monocyte cell line THP-1. METHODS: M1 and M2 macrophages were induced by lipopolysaccharide/interferon-γ and interleukin-4, respectively, and the phenotypes were confirmed by flow cytometry...
February 9, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28138240/plant-derived-pectin-nanocoatings-to-prevent-inflammatory-cellular-response-of-osteoblasts-following-porphyromonas-gingivalis-infection
#8
Anna Meresta, Justyna Folkert, Timo Gaber, Korneliusz Miksch, Frank Buttgereit, Jacqueline Detert, Nicole Pischon, Katarzyna Gurzawska
BACKGROUND: Bioengineered plant-derived Rhamnogalacturonan-Is (RG-Is) from pectins are potential candidates for surface nanocoating of medical devices. It has recently been reported that RG-I nanocoatings may prevent bacterial infection and improve the biocompatibility of implants. The aim of the study was to evaluate in vitro impact of bioengineered RG-I nanocoatings on osteogenic capacity and proinflammatory cytokine response of murine osteoblasts following Porphyromonas gingivalis infection...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28132712/the-triple-functions-of-d2-silencing-in-treatment-of-periapical-disease
#9
Jie Pan, Jue Wang, Liang Hao, Guochun Zhu, Diep N Nguyen, Qian Li, Yuehua Liu, Zhihe Zhao, Yi-Ping Li, Wei Chen
INTRODUCTION: Dental caries is the most widespread chronic infectious disease. Inflammation in pulp tissues caused by dental caries will lead to periapical granulomas, bone erosion, loss of the tooth, and severe pain. Despite numerous efforts in recent studies to develop effective treatments for dental caries, the need for a potent therapy is still urgent. METHODS: In this study, we applied a gene-based therapy approach by administering recombinant adeno-associated virus (AAV)-mediated Atp6v0d2 (d2) RNA interference knockdown of d2 gene expression to prevent periapical bone loss and suppress periapical inflammation simultaneously...
February 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28125136/why-not-to-treat-the-tooth-canal-to-solve-external-root-resorptions-here-are-the-principles
#10
Alberto Consolaro, Graziella Bittencourt
This paper aims at exposing the foundations or reasons why, in cases of external tooth resorption, including those of orthodontic origin, one should not perform a root canal to treat it. That should be done only to teeth with contamination or pulp necrosis, to remove the periapical inflammation induced by microbial products. When facing cases of external tooth resorption, one's conduct must always respect the following sequence of steps: first of all, identifying the cause accurately; then, planning the therapeutic approach and, finally, adopting the conducts in a very well-founded way...
November 2016: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28124615/formulation-of-saudi-propolis-into-biodegradable-chitosan-chips-for-vital-pulpotomy
#11
Gihan F Balata, Mohamed I S Abdelhady, Ghada M Mahmoud, Moustafa A Matar, Amani N Abd El-Latif
BACKGROUND: Propolis has been widely used to treat oral cavity disorders, such as endodontal and periodontal diseases and microbial infections. OBJECTIVE: The study aimed at formulation of commercial Saudi propolis into biodegradable chitosan chips and evaluation of its effectiveness as a pulpotomy agent. METHOD: The composition of 80% ethanolic propolis extract was evaluated regarding its total phenolic content, total flavonoid content and antioxidant activity...
January 25, 2017: Current Drug Delivery
https://www.readbyqxmd.com/read/28072988/-retrospective-analysis-of-pulp-revascularization-in-immature-permanent-teeth-with-diffuse-pulpitis
#12
C F Peng, Y M Zhao, Y Yang, H Liu, M Qin
Objective: To evaluate the treatment effectiveness of revascularization in immature permanent teeth with diffuse pulpitis and to provide an alternative approach for the treatment of these teeth. Methods: Clinical and radiographic data were collected from 17 immature permanent teeth which were diagnosed as diffuse pulpitis and with their pulp extirpated at Emergency Department of Peking University School and Hospital of Stomatology. All these teeth were treated using pulp revascularization at Department of Pediatric Dentistry...
January 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28067970/fourier-transform-infrared-imaging-analysis-of-dental-pulp-inflammatory-diseases
#13
E Giorgini, S Sabbatini, C Conti, C Rubini, R Rocchetti, M Fioroni, L Memè, G Orilisi
OBJECTIVES: FTIR Microspectroscopy let characterize the macromolecular composition and distribution of tissues and cells, by studying the interaction between infrared radiation and matter. Therefore, we hypothesize to exploit this analytical tool in the analysis of inflamed pulps, to detect the different biochemical features related to various degrees of inflammation. MATERIALS AND METHODS: IR maps of 13 irreversible and 12 hyperplastic pulpitis, together with 10 normal pulps, were acquired, compared with histological findings and submitted to multivariate (HCA, PCA, SIMCA) and statistical (one-way ANOVA) analysis...
January 9, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28067275/sdf-1-cxcr4-axis-induces-human-dental-pulp-stem-cell-migration-through-fak-pi3k-akt-and-gsk3%C3%AE-%C3%AE-catenin-pathways
#14
Mingwei Li, Xuefei Sun, Liang Ma, Lu Jin, Wenfei Zhang, Min Xiao, Qing Yu
SDF-1 (stromal cell derived factor-1) has been found to be widely expressed during dental pulp inflammation, while hDPSCs (human dental pulp stem cells) contribute to the repair of dental pulp. We showed that the migration of hDPSCs was induced by SDF-1 in a concentration-dependent manner and could be inhibited with siCXCR4 (C-X-C chemokine receptor type 4) and siCDC42 (cell division control protein 42), as well as drug inhibitors such as AMD3100 (antagonist of CXCR4), LY294002 (inhibitor of PI3K) and PF573228 (inhibitor of FAK)...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28064220/gene-expression-analysis-of-cultured-rat-endothelial-cells-after-nd-yag-laser-irradiation-by-affymetrix-genechip-array
#15
Yoshiko Masuda, Satoshi Yokose, Hiroshi Sakagami
Endothelial cells and dental pulp cells enhance osteo-/odontogenic and angiogenic differentiation. In our previous study, rat pulp cells migrated to Nd:YAG laser-irradiated endothelial cells in an insert cell culture system. The purpose of this study was to examine the possible changes in the gene expression of cultured rat aortic endothelial cells after Nd:YAG laser irradiation using affymetrix GeneChip Array. Total RNA was extracted from the cells at 5 h after laser irradiation. Gene expressions were evaluated by DNA array chip...
January 2017: In Vivo
https://www.readbyqxmd.com/read/28062667/smn-deficiency-negatively-impacts-red-pulp-macrophages-and-spleen-development-in-mouse-models-of-spinal-muscular-atrophy
#16
Marie-Therese Khairallah, Jacob Astroski, Sarah K Custer, Elliot J Androphy, Craig L Franklin, Christian L Lorson
Spinal muscular atrophy (SMA) is a progressive neurodegenerative disease that is the leading genetic cause of infantile death. It is caused by severe deficiency of the ubiquitously expressed Survival Motor Neuron (SMN) protein. SMA is characterized by α-lower motor neuron loss and muscle atrophy, however, there is a growing list of tissues impacted by SMN deficiency beyond motor neurons. The non-neuronal defects are observed in the most severe Type I SMA patients and most of the widely used SMA mouse models, however, as effective therapeutics are developed, it is unclear whether additional symptoms will be uncovered in longer lived patients...
January 5, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28061467/cytological-study-on-the-regulation-of-lymphocyte-homing-in-the-chicken-spleen-during-lps-stimulation
#17
Qian Zhang, Yasir Waqas, Ping Yang, Xuejing Sun, Yi Liu, Nisar Ahmed, Bing Chen, Quanfu Li, Lisi Hu, Yufei Huang, Hong Chen, Bing Hu, Qiusheng Chen
The immune function of the chicken spleen depends on its different compartments of red and white pulps, but little is known about the mechanism underlying lymphocyte homing towards the different compartments. In the present study, the role of lymphocyte homing in the chicken spleen was investigated during lipopolysaccharide (LPS) stimulation. Morphological analysis demonstrated the cuboidal endothelial cells of the splenic sheathed capillary facilitated the passage of lymphocyte homing to the chicken spleen...
January 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28041684/ash1l-suppresses-matrix-metalloproteinase-through-mitogen-activated-protein-kinase-signaling-pathway-in-pulpitis
#18
Yin Bei, Hui Tianqian, Yu Fanyuan, Luo Haiyun, Liao Xueyang, Yang Jing, Wang Chenglin, Ye Ling
INTRODUCTION: Pulpitis is an inflammation of dental pulp produced by a response to external stimuli. The response entails substantial cellular and molecular activities. Both genetic and epigenetic regulators contribute to the occurrence of pulpitis. However, the epigenetic mechanisms are still poorly understood. In this research, we studied the role of the absent, small, or homeotic-like (ASH1L) gene in the process of pulpitis. METHODS: Human dental pulp cells (HDPCs) were stimulated with proinflammatory cytokine tumor necrosis factor alpha (TNF-α)...
December 29, 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/28013517/using-oral-and-colon-cancer-cells-for-studying-the-anticancer-properties-of-antimicrobial-peptides
#19
Teerakul Arpornsuwan, Wimolpak Sriwai, Hathaitip Sritanaudomchai, Sittiruk Roytrakul
Antimicrobial peptides (AMPs) are of importance in defense mechanism of many organisms and are potential candidate for treatment of infections in animals and humans. AMPs exhibit a wide range of immunomodulatory activities related to innate immunity, wound healing, and inflammation. AMPs also serve as drug delivery vectors, antitumor agents, and mitogenic agents. Here, we describe the investigation of anticancer and cytotoxic activities of antimicrobial peptides by colorimetric MTT assay using smooth muscle, dental pulp stem cell, human colon cancer cell line (SW620), and human oral squamous carcinoma cell line (HSC4)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27955979/cardiac-inflammation-in-genetic-dilated-cardiomyopathy-caused-by-mybpc3-mutation
#20
Thomas L Lynch, Mohamed Ameen Ismahil, Anil G Jegga, Michael J Zilliox, Christian Troidl, Sumanth D Prabhu, Sakthivel Sadayappan
Cardiomyopathies are a leading cause of heart failure and are often caused by mutations in sarcomeric genes, resulting in contractile dysfunction and cellular damage. This may stimulate the production of a robust proinflammatory response. To determine whether myocardial inflammation is associated with cardiac dysfunction in dilated cardiomyopathy (DCM) caused by MYBPC3 mutation, we used the well-characterized cMyBP-C((t/t)) mouse model of DCM at 3months of age. Compared to wild type (WT) mice, DCM mice exhibited significantly decreased fractional shortening (36...
January 2017: Journal of Molecular and Cellular Cardiology
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