LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 24

Search options

  1. Article ; Online: Odontoblast and dentin thermal sensitivity.

    Magloire, Henry

    Pain

    2011  Volume 152, Issue 10, Page(s) 2191–2192

    MeSH term(s) Calcium Channels/physiology ; Dentin Sensitivity/metabolism ; Humans ; Nerve Tissue Proteins/physiology ; Odontoblasts/metabolism ; TRPA1 Cation Channel ; TRPM Cation Channels/physiology ; TRPV Cation Channels/physiology ; Thermosensing ; Transient Receptor Potential Channels/physiology
    Chemical Substances Calcium Channels ; Nerve Tissue Proteins ; TRPA1 Cation Channel ; TRPA1 protein, human ; TRPM Cation Channels ; TRPM8 protein, human ; TRPV Cation Channels ; TRPV1 protein, human ; Transient Receptor Potential Channels
    Language English
    Publishing date 2011-03-05
    Publishing country United States
    Document type Editorial ; Comment
    ZDB-ID 193153-2
    ISSN 1872-6623 ; 0304-3959
    ISSN (online) 1872-6623
    ISSN 0304-3959
    DOI 10.1016/j.pain.2011.02.042
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Nerve growth factor signalling in pathology and regeneration of human teeth.

    Mitsiadis, Thimios A / Magloire, Henry / Pagella, Pierfrancesco

    Scientific reports

    2017  Volume 7, Issue 1, Page(s) 1327

    Abstract: Nerve growth factor (NGF) is a key regulator of the development and differentiation of neuronal and non-neuronal cells. In the present study we examined the distribution of NGF and its low and high-affinity receptors, ... ...

    Abstract Nerve growth factor (NGF) is a key regulator of the development and differentiation of neuronal and non-neuronal cells. In the present study we examined the distribution of NGF and its low and high-affinity receptors, p75
    MeSH term(s) Adolescent ; Adult ; Axons/drug effects ; Axons/physiology ; Cells, Cultured ; Child ; Dental Pulp/innervation ; Dental Pulp/metabolism ; Fibroblasts/metabolism ; Humans ; Middle Aged ; Nerve Growth Factor/administration & dosage ; Nerve Growth Factor/metabolism ; Nerve Regeneration ; Nerve Tissue Proteins/metabolism ; Neuroglia/drug effects ; Neuroglia/physiology ; Odontoblasts/metabolism ; Receptor, trkA/metabolism ; Receptors, Nerve Growth Factor/metabolism ; Regeneration ; Signal Transduction ; Tooth/metabolism ; Tooth/pathology ; Wound Healing
    Chemical Substances NGF protein, human ; NGFR protein, human ; Nerve Tissue Proteins ; Receptors, Nerve Growth Factor ; Nerve Growth Factor (9061-61-4) ; Receptor, trkA (EC 2.7.10.1)
    Language English
    Publishing date 2017-05-02
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-017-01455-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Nerve growth factor signalling in pathology and regeneration of human teeth

    Thimios A. Mitsiadis / Henry Magloire / Pierfrancesco Pagella

    Scientific Reports, Vol 7, Iss 1, Pp 1-

    2017  Volume 14

    Abstract: Abstract Nerve growth factor (NGF) is a key regulator of the development and differentiation of neuronal and non-neuronal cells. In the present study we examined the distribution of NGF and its low and high-affinity receptors, p75NTR and TrkA ... ...

    Abstract Abstract Nerve growth factor (NGF) is a key regulator of the development and differentiation of neuronal and non-neuronal cells. In the present study we examined the distribution of NGF and its low and high-affinity receptors, p75NTR and TrkA respectively, in permanent human teeth under normal and pathological conditions. In intact functional teeth, NGF, p75NTR and TrkA are weakly expressed in dental pulp fibroblasts and odontoblasts that are responsible for dentine formation, while the NGF and p75NTR molecules are strongly expressed in nerve fibres innervating the dental pulp. In carious and injured teeth NGF and TrkA expression is upregulated in a selective manner in odontoblasts surrounding the injury sites, indicating a link between NGF signalling and dental tissue repair events. Accordingly, NGF and TrkA expression is strongly upregulated in cultured primary human dental mesenchymal cells during their differentiation into odontoblasts. Targeted release of NGF in cultured human tooth slices induced extensive axonal growth and migration of Schwann cells towards the NGF administration site. These results show that NGF signalling is strongly linked to pathological and regenerative processes in human teeth and suggest a potential role for this neurotrophic molecule in pulp regeneration.
    Keywords Medicine ; R ; Science ; Q
    Subject code 572
    Language English
    Publishing date 2017-05-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  4. Article ; Online: Contribution of Jean-Victor Ruch to the study of odontogenesis: a unique story.

    Lesot, Hervé / Magloire, Henry

    Journal of experimental zoology. Part B, Molecular and developmental evolution

    2009  Volume 312B, Issue 4, Page(s) 249–259

    MeSH term(s) History, 20th Century ; History, 21st Century ; Humans ; Tooth/growth & development
    Language English
    Publishing date 2009-06-15
    Publishing country United States
    Document type Biography ; Editorial ; Historical Article
    ZDB-ID 2103823-5
    ISSN 1552-5015 ; 0022-104X ; 1552-5007
    ISSN (online) 1552-5015
    ISSN 0022-104X ; 1552-5007
    DOI 10.1002/jez.b.21258
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Normalisation of the psychometric encephalopathy score within the Cameroonian population.

    Pessidjo Djomatcho, Larissa / Kowo, Mathurin Pierre / Ndam, Antonin Ndjitoyap / Njonnou, Sylvain Raoul Simeni / Kenfack, Gabin Ulrich / Andoulo, Firmin Ankouane / Bagnaka, Servais Fiacre Eloumou / Bekolo, Winnie Tatiana / Malongue, Agnès / Babagna, Isabelle Dang / Sida, Magloire Biwolé / Luma, Henry / Njoya, Oudou

    BMC gastroenterology

    2021  Volume 21, Issue 1, Page(s) 287

    Abstract: Background: Minimal hepatic encephalopathy (MHE) is the presence of neuropsychological abnormalities detectable by psychometric tests. Psychometric Hepatic Encephalopathy Score (PHES) is a gold standard test for the early diagnosis of MHE in cirrhotic ... ...

    Abstract Background: Minimal hepatic encephalopathy (MHE) is the presence of neuropsychological abnormalities detectable by psychometric tests. Psychometric Hepatic Encephalopathy Score (PHES) is a gold standard test for the early diagnosis of MHE in cirrhotic patients. The aim of this study was to standardize the PHES in a healthy Cameroonian population and to evaluate the prevalence of MHE among cirrhotic patients.
    Methods: This was a prospective, multicentric study from 1 December 2018 to 31 July 2019 in two groups: healthy volunteers and cirrhotic patients without clinical signs of hepatic encephalopathy. The results of the number connection test-A, number connection test-B, serial dotting test, line tracing test were expressed in seconds and those of the digit symbol test in points.
    Results: A total of 102 healthy volunteers (54 men, 48 women) and 50 cirrhotic patients (29 men, 31 women) were included. The mean age was 38.1 ± 12.55 years in healthy volunteers and 49.3 ± 15.6 years in cirrhotic patients. The mean years of education level was 11.63 ± 4.20 years in healthy volunteers and 9.62 ± 3.9 years in cirrhotic patients. The PHES of the healthy volunteer group was - 0.08 ± 1.28 and the cut-off between normal and pathological values was set at - 3 points. PHES of the cirrhotic patients was - 7.66 ± 5.62 points and significantly lower than that of volunteers (p < 0.001). Prevalence of MHE was 74% among cirrhotic patients. Age and education level were associated with MHE.
    Conclusion: PHES cut-off value in Cameroonians is - 3, with MHE prevalence of 74% among cirrhotic patients.
    MeSH term(s) Adult ; Female ; Hepatic Encephalopathy/diagnosis ; Hepatic Encephalopathy/epidemiology ; Humans ; Liver Cirrhosis/complications ; Liver Cirrhosis/epidemiology ; Male ; Middle Aged ; Prospective Studies ; Psychometrics ; Severity of Illness Index
    Language English
    Publishing date 2021-07-12
    Publishing country England
    Document type Journal Article ; Multicenter Study
    ZDB-ID 2041351-8
    ISSN 1471-230X ; 1471-230X
    ISSN (online) 1471-230X
    ISSN 1471-230X
    DOI 10.1186/s12876-021-01858-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Odontoblast: a mechano-sensory cell.

    Magloire, Henry / Couble, Marie-Lise / Thivichon-Prince, Beatrice / Maurin, Jean-Christophe / Bleicher, Francoise

    Journal of experimental zoology. Part B, Molecular and developmental evolution

    2009  Volume 312B, Issue 5, Page(s) 416–424

    Abstract: Odontoblasts are organized as a single layer of specialized cells responsible for dentine formation and presumably for playing a role in tooth pain transmission. Each cell has an extension running into a dentinal tubule and bathing in the dentinal fluid. ...

    Abstract Odontoblasts are organized as a single layer of specialized cells responsible for dentine formation and presumably for playing a role in tooth pain transmission. Each cell has an extension running into a dentinal tubule and bathing in the dentinal fluid. A dense network of sensory unmyelinated nerve fibers surrounds the cell bodies and processes. Thus, dentinal tubules subjected to external stimuli causing dentinal fluid movements and odontoblasts/nerve complex response may represent a unique mechano-sensory system giving to dentine-forming cells a pivotal role in signal transduction. Mediators of mechano-transduction identified in odontoblast include mechano-sensitive ion channels (high conductance calcium-activated potassium channel--K(Ca)--and a 2P domain potassium channel--TREK-1) and primary cilium. In many tissues, the latter is essential for microenvironment sensing but its role in the control of odontoblast behavior remains to be elucidated. Recent evidence for excitable properties and the concentration of key channels to the terminal web suggest that odontoblasts may operate as sensor cells.
    MeSH term(s) Actins/physiology ; Brain/physiology ; Cell Adhesion Molecules, Neuronal/physiology ; Cells, Cultured ; Dental Pulp/cytology ; Dental Pulp/innervation ; Dental Pulp/physiology ; Extracellular Matrix Proteins/physiology ; Humans ; Nerve Tissue Proteins/physiology ; Odontoblasts/cytology ; Odontoblasts/physiology ; Semaphorins/physiology ; Serine Endopeptidases/physiology ; Stress, Mechanical ; Toothache/physiopathology
    Chemical Substances Actins ; Cell Adhesion Molecules, Neuronal ; Extracellular Matrix Proteins ; Nerve Tissue Proteins ; Semaphorins ; Serine Endopeptidases (EC 3.4.21.-) ; reelin protein (EC 3.4.21.-)
    Language English
    Publishing date 2009-07-15
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2103823-5
    ISSN 1552-5015 ; 0022-104X ; 1552-5007
    ISSN (online) 1552-5015
    ISSN 0022-104X ; 1552-5007
    DOI 10.1002/jez.b.21264
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Spatial and temporal expression of KLF4 and KLF5 during murine tooth development.

    Chen, Zhuo / Couble, Marie-Lise / Mouterfi, Nassima / Magloire, Henry / Chen, Zhi / Bleicher, Françoise

    Archives of oral biology

    2009  Volume 54, Issue 5, Page(s) 403–411

    Abstract: Objective: KLF4 and KLF5, members of the Krüppel-like factor (KLF) family, play key roles in proliferation, differentiation and apoptosis during development. In order to determine if these transcription factors are associated with tooth development, we ... ...

    Abstract Objective: KLF4 and KLF5, members of the Krüppel-like factor (KLF) family, play key roles in proliferation, differentiation and apoptosis during development. In order to determine if these transcription factors are associated with tooth development, we examined the expression pattern of KLF4 and KLF5 during murine tooth development.
    Design: In situ hybridization and immunohistochemistry were performed to detect the expression pattern of KLF4 and KLF5 from E12.5 to PN3 during murine tooth development.
    Results: In situ hybridization analysis revealed that Klf4 was specifically expressed in polarizing odontoblasts from E16.5 (incisor) or E18.5 (first molar) to PN3. Immunohistochemistry staining showed that KLF4 was specifically expressed in both polarizing odontoblasts and ameloblasts at the same stages. KLF5 was mainly expressed from E18.5 to PN3 in secretory ameloblasts when enamel mineralization occurs and in secretory odontoblasts. However, an expression of KLF5 was also observed at earlier stages (E14.5 and E16.5) mainly in proliferating epithelial cells.
    Conclusions: These results suggest that the expression of KLF4 is closely correlated to the growth-arrest and the first step of odontoblast and ameloblast differentiation. Furthermore, KLF5 maybe involved in proliferation at the early stages of tooth development and related to mineralization of both enamel and dentin matrices at later stages.
    MeSH term(s) Ameloblasts/physiology ; Animals ; Cell Differentiation/genetics ; Cell Proliferation ; Dental Enamel/cytology ; Dental Enamel/embryology ; Dental Pulp/cytology ; Dental Pulp/embryology ; Dentin/cytology ; Dentin/embryology ; Epithelial Cells/cytology ; Gene Expression Regulation, Developmental/genetics ; Growth Inhibitors/analysis ; Growth Inhibitors/genetics ; Immunohistochemistry ; In Situ Hybridization ; Incisor/cytology ; Incisor/embryology ; Ki-67 Antigen/analysis ; Ki-67 Antigen/genetics ; Kruppel-Like Transcription Factors/analysis ; Kruppel-Like Transcription Factors/genetics ; Mice ; Molar/cytology ; Molar/embryology ; Odontoblasts/cytology ; Odontogenesis/genetics ; Time Factors ; Tooth Calcification/genetics ; Tooth Germ/embryology ; Zinc Fingers/genetics
    Chemical Substances GKLF protein ; Growth Inhibitors ; Ki-67 Antigen ; Klf5 protein, mouse ; Kruppel-Like Transcription Factors ; Mki67 protein, mouse
    Language English
    Publishing date 2009-05
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 80227-x
    ISSN 1879-1506 ; 0003-9969
    ISSN (online) 1879-1506
    ISSN 0003-9969
    DOI 10.1016/j.archoralbio.2009.02.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article: Odontoblast primary cilia: facts and hypotheses.

    Magloire, Henry / Couble, Marie-Lise / Romeas, Annick / Bleicher, Françoise

    Cell biology international

    2004  Volume 28, Issue 2, Page(s) 93–99

    Abstract: Odontoblasts, the cells responsible for the dentine formation, are organized as a single layer of highly polarized and differentiated post-mitotic cells along the interface between the dental pulp and the mineralized tubules. They lay down the ... ...

    Abstract Odontoblasts, the cells responsible for the dentine formation, are organized as a single layer of highly polarized and differentiated post-mitotic cells along the interface between the dental pulp and the mineralized tubules. They lay down the physiological secondary dentine throughout the life of the teeth. Odontoblasts play a central role in the transportation of calcium to the dentine and they possibly mediate early stages of sensory processing in teeth. A primary cilium, 9+0 configuration, have been regularly identified in a supra nuclear location. Calbindin D28k has been detected at the base of the cilium membrane. The cilium structure was positive with detyrosinated alpha tubulin antibodies in vivo and in cultured human odontoblasts. Transcripts of tektin, a protein involved in ciliogenesis, were expressed in vitro. The putative role of the primary cilium constituting a critical link between external teeth stimuli and odontoblast responses is extensively discussed.
    MeSH term(s) Calbindin 1 ; Calbindins ; Cell Nucleus/ultrastructure ; Cells, Cultured ; Cilia/ultrastructure ; Dentin/metabolism ; Dentin/ultrastructure ; Humans ; Microscopy, Electron ; Odontoblasts/metabolism ; Odontoblasts/ultrastructure ; S100 Calcium Binding Protein G/metabolism ; Tooth/cytology ; Tooth/metabolism ; Tooth Calcification/physiology
    Chemical Substances CALB1 protein, human ; Calbindin 1 ; Calbindins ; S100 Calcium Binding Protein G
    Language English
    Publishing date 2004
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1143453-3
    ISSN 1095-8355 ; 1065-6995
    ISSN (online) 1095-8355
    ISSN 1065-6995
    DOI 10.1016/j.cellbi.2003.11.006
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article: In vitro study of a neodynium:yttrium aluminum perovskite laser on human nonexposed pulp after cavity preparation.

    Seux, Dominique / Roméas, Annick / Antoine, Bruno / Magloire, Henry / Bleicher, Françoise

    Clinical oral investigations

    2004  Volume 8, Issue 3, Page(s) 145–150

    Abstract: Purpose: The aim of this study was to investigate dental pulp reactions after a neodynium:yttrium aluminum perovskite laser pulse on the dentinal floor of occlusal cavities in an in vitro model.: Methods: A Lokki dt laser was used at 30 Hz, 5 W, and ... ...

    Abstract Purpose: The aim of this study was to investigate dental pulp reactions after a neodynium:yttrium aluminum perovskite laser pulse on the dentinal floor of occlusal cavities in an in vitro model.
    Methods: A Lokki dt laser was used at 30 Hz, 5 W, and 160 mJ for 0.5 s. The pulp reactions were analyzed in a previously described human tooth slice cultured model. The following markers were identified by immunohistochemistry: collagens I, III, and IV and HLA-DR-positive cells.
    Results: After 4 days of culture, under laser pulse, a concentration of type III collagen beneath the odontoblast layer, a higher level of vessels and an accumulation of HLA-DR-positive cells were routinely observed subjacent to the cavity.
    Conclusion: This laser treatment leads to the first step of rapid pulp repair under culture conditions.
    MeSH term(s) Adolescent ; Adult ; Dendritic Cells/immunology ; Dental Cavity Preparation/methods ; Dental Pulp/immunology ; Dental Pulp/radiation effects ; Fibrillar Collagens/radiation effects ; HLA-DR Antigens/analysis ; Humans ; Immunoenzyme Techniques ; Laser Therapy ; Neodymium ; Odontoblasts/radiation effects
    Chemical Substances Fibrillar Collagens ; HLA-DR Antigens ; Neodymium (2I87U3734A)
    Language English
    Publishing date 2004-09
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1364490-7
    ISSN 1436-3771 ; 1432-6981
    ISSN (online) 1436-3771
    ISSN 1432-6981
    DOI 10.1007/s00784-004-0260-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: Topical review. Dental pain and odontoblasts: facts and hypotheses.

    Magloire, Henry / Maurin, Jean Christophe / Couble, Marie Lise / Shibukawa, Yoshiyuki / Tsumura, Maki / Thivichon-Prince, Beatrice / Bleicher, Francoise

    Journal of orofacial pain

    2010  Volume 24, Issue 4, Page(s) 335–349

    Abstract: Dental pain arises from exposed dentin following bacterial, chemical, or mechanical erosion of enamel and/or recession of gingiva. Thus, dentin tissue and more specifically patent dentinal tubules represent the first structure involved in dentin ... ...

    Abstract Dental pain arises from exposed dentin following bacterial, chemical, or mechanical erosion of enamel and/or recession of gingiva. Thus, dentin tissue and more specifically patent dentinal tubules represent the first structure involved in dentin sensitivity. Interestingly, the architecture of dentin could allow for the transfer of information to the underlying dental pulp via odontoblasts (dentin-forming cells), via their apical extension bathed in the dentinal fluid running in the tubules, or via a dense network of trigeminal sensory axons intimately related to odontoblasts. Therefore, external stimuli causing dentinal fluid movements and odontoblasts and/or nerve complex responses may represent a unique mechanosensory system bringing a new role for odontoblasts as sensor cells. How cells sense signals and how the latter are transmitted to axons represent the main questions to be resolved. However, several lines of evidence have demonstrated that odontoblasts express mechano- and/or thermosensitive transient receptor potential ion channels (TRPV1, TRPV2, TRPV3, TRPV4, TRPM3, KCa, TREK-1) that are likely to sense heat and/or cold or movements of dentinal fluid within tubules. Added to this, voltage-gated sodium channels confer excitable properties of odontoblasts in vitro in response to injection of depolarizing currents. In vivo, sodium channels co-localize with nerve terminals at the apical pole of odontoblasts and correlate with the spatial distribution of stretch-activated KCa channels. This highlights the terminal web as the pivotal zone of the pulp/dentin complex for sensing external stimuli. Crosstalk between odontoblasts and axons may take place by the release of mediators in the gap space between odontoblasts and axons in view of evidence for nociception-transducing receptors on trigeminal afferent fibers and expression of putative effectors by odontoblasts. Finally, how axons are guided to the target cells and which kind of signaling molecules are involved is extensively discussed in this review.
    MeSH term(s) Axons/physiology ; Cilia/physiology ; Dental Pulp/innervation ; Dentin Sensitivity/physiopathology ; Dentinal Fluid/physiology ; Humans ; Odontoblasts/physiology ; Potassium Channels, Calcium-Activated/physiology ; Potassium Channels, Tandem Pore Domain/physiology ; Pulpitis/physiopathology ; Signal Transduction ; Sodium Channels/physiology ; Toothache/physiopathology ; Transient Receptor Potential Channels/physiology ; Trigeminal Nerve/cytology
    Chemical Substances Potassium Channels, Calcium-Activated ; Potassium Channels, Tandem Pore Domain ; Sodium Channels ; Transient Receptor Potential Channels ; potassium channel protein TREK-1
    Language English
    Publishing date 2010
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1144910-x
    ISSN 1945-3396 ; 1064-6655
    ISSN (online) 1945-3396
    ISSN 1064-6655
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top