Publications by authors named "Barthels D"

Activated microglial cells in the central nervous system (CNS) are the main contributors to neurodegenerative disorders such as Alzheimer's disease and Parkinson's disease. Inhibiting their activation will help in reducing inflammation and oxidative stress during pathogenesis, potentially limiting the progression of the diseases. The immunomodulation properties of dental pulp-derived stem cells (DPSC) make it a promising therapy for neurodegenerative disorders.

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Background: Transplantation of stem cells for treating neurodegenerative disorders is a promising future therapeutic approach. However, the molecular mechanism underlying the neuronal differentiation of dental pulp-derived stem cells (DPSC) remains inadequately explored. The current study aims to define the regulatory role of KLF2 (Kruppel-like factor 2) during the neural differentiation (ND) of DPSC.

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  • - The study investigated the natural compound epigallocatechin-3-gallate (EGCG) and its ability to inhibit the differentiation of osteoclasts (cells that break down bone) both in lab settings and in primary bone marrow cells, showing a dose-dependent effect.
  • - EGCG was found to lower the levels of reactive oxygen species (ROS) and disrupt mitochondrial function, along with reducing the expression of markers associated with osteoclast differentiation and several mitophagy-related molecules.
  • - The results indicated that EGCG inhibits osteoclastogenesis through the modulation of mitophagy via the AKT and p38MAPK pathways, and it also interferes with the binding of RANK and RANKL,
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  • Astrocytes play a crucial role in both promoting recovery and causing impairments following central nervous system (CNS) injuries, with uncontrolled gliosis leading to significant dysfunction.
  • Co-culturing astrocytes with dental pulp-derived stem cells (DPSCs) demonstrated protective effects, reducing harmful processes like ROS production and mitochondrial dysfunction during gliosis.
  • The beneficial impact of DPSCs was linked to increased neurogenesis and secretion of neurotropic factors, suggesting potential new therapeutic strategies to maintain astrocyte health after CNS trauma.
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Polyphenolic compounds are a diverse group of natural compounds that interact with various cellular proteins responsible for cell survival, differentiation, and apoptosis. However, it is yet to be established how these compounds interact in myeloid cells during their differentiation and the molecular and intracellular mechanisms involved. Osteoclasts are multinucleated cells that originate from myeloid cells.

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  • Advances in diabetic wound care are still insufficient, leading to many amputations each year, highlighting the need for better therapies.
  • Research reveals that dental pulp-derived stem cell (DPSC) products can significantly improve wound healing in diabetic mice by promoting closure and reducing inflammation.
  • The study identifies key mechanisms, including the modulation of inflammatory factors and promotion of anti-inflammatory responses, suggesting DPSC products as a potential treatment for diabetic wounds in the future.
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  • Osteoblast differentiation is significantly impaired in conditions like arthritis and osteoporosis; the study explores how ferutinin, a phytoestrogen, can help induce differentiation from dental pulp-derived stem cells (DPSC).
  • The research highlights that ferutinin increases the expression of the transcription factor KLF2 and related autophagy molecules in DPSCs, showing KLF2's role in promoting both autophagy and osteoblast differentiation.
  • Additionally, ferutinin treatment leads to improved mitochondrial function and reduced oxidative stress in DPSCs, supported by chromatin immunoprecipitation findings that indicate epigenetic modifications at the ATG7 gene promoter, enhancing autophagy processes.
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The dopaminergic system is involved in the regulation of immune responses in various homeostatic and disease conditions. For conditions such as Parkinson's disease and multiple sclerosis (MS), pharmacological modulation of dopamine (DA) system activity is thought to have therapeutic relevance, providing the basis for using dopaminergic agents as a treatment of relevant states. In particular, it was proposed that restoration of DA levels may inhibit neuroinflammation.

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Critical limb ischemia (CLI) is primarily associated with a high risk of major amputation, cardiovascular events, and death. The current therapy involves direct endovascular intervention and is associated with long-term recurrence. However, patients with significant comorbidities are not eligible for this therapy.

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With more than 795,000 cases occurring every year, stroke has become a major problem in the United States across all demographics. Stroke is the leading cause of long-term disability and is the fifth leading cause of death in the US. Ischemic stroke represents 87% of total strokes in the US, and is currently the main focus of stroke research.

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To identify genes that are differentially expressed during self-repair processes in mouse brain, we screened a subtracted cDNA library enriched for brain-specific clones. One of these clones, H74, detected a 4.4-kb mRNA predominantly expressed in brain and dorsal root ganglia neurons.

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Acute disturbances of blood coagulation during operations and intensive therapy require quick and precise action in order to avoid life-threatening situations. This paper reports on a simple system for the diagnosis and therapy of acute disturbances of blood coagulation. In the initial phase of bleeding, determination of fibrin monomers, d-dimers, reptilase time, number of platelets and AT III enables diagnosis of disseminated intravascular coagulation (DIC), hyperfibrinolysis and consumption coagulopathy.

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Using oligonucleotides complementary to the conserved inter-finger region of a variety of previously described zinc finger-encoding genes, a novel mouse gene was cloned and characterized. The gene is localized on chromosome 8 and comprises five exons. Its corresponding mRNA is developmentally regulated in various tissues and includes an open reading frame encoding a protein of 72,422 daltons.

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The adhesive properties of neural cell adhesion molecules (NCAMs) can be modified by alternative splicing of the primary transcript or posttranslational modifications. In the present study, we describe distinct forms of alternative splicing and posttranslational modification of the extracellular domain of NCAM of various endocrine tissues and derived tumor cells of the rat. Using an antiserum detecting the immunoglobulin-like domains of NCAM as well as a monoclonal antibody recognizing the NCAM-specific polysialic acid (PSA), we observed a similar staining pattern in adrenals, pituitary, and neoplastic endocrine cells.

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The neural cell adhesion molecule (NCAM) polypeptides are expressed by numerous tissues during embryonic development, where they are involved in cell-cell interactions. In the adult, NCAM expression is confined to a few cell types, including neurons and peptide-hormone-producing cells. Here we demonstrate that the Leydig cells of the adult rat, mouse, and hamster testes express NCAM as well.

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The neural cell adhesion molecules (NCAMs) are cell surface glycoproteins involved in vertebrate cell contact formation. Several NCAM mRNA types are generated from a single primary transcript by alternative splicing and differential polyadenylation. In this presentation we analyse sequence heterogeneities within NCAM transcripts detected in the junctions of exons 7/8, 12/13 and 13/14.

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We refer to a case report describing the diagnostic and therapeutic problems resulting in multiple intra- and postoperative coagulation disorders. Differential diagnostic indications respecting to the most important disorders within the coagulation system are described especially. Local hyperfibrinolysis is accounted in detail; besides we inform about our own therapeutic experiences.

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The neural cell adhesion molecule (NCAM) is thought to be involved in several important events during CNS vertebrate development. This study provides additional information concerning the biochemical determination and anatomical localization of NCAM transcripts. Using S1 nuclease protection assays (S1-NPAs), NCAM transcripts in brain appear highest at birth, with NCAM messenger levels reduced some 20-fold by adulthood.

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The murine neural cell adhesion molecule (NCAM) is known to exist in three isoforms of different size, NCAM-180, -140 and -120 coded for by four transcripts of 6.9, 6.1, 4.

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The three different isoforms (NCAM-180, -140 and -120) of the murine neural cell adhesion molecule are encoded by a single gene. The two smaller isoforms, NCAM-120 and -140 are generated by alternative RNA splicing of the primary transcript. We here report sequence data of a mouse cDNA clone reverse transcribed from NCAM mRNA containing an extra fragment of 801 nt.

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The neural cell adhesion molecule (NCAM) exists in at least three different isoforms. In the mouse, NCAM proteins with apparent Mr's of 180,000, 140,000 and 120,000 have been distinguished. These are encoded by 4 to 5 different transcripts.

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The neural cell adhesion molecule (NCAM) exists in several isoforms which are selectively expressed by different cell types and at different stages of development. In the mouse, three proteins with apparent Mr's of 180,000, 140,000 and 120,000 have been distinguished that are encoded by 4-5 different mRNAs. Here we report the full amino acid sequence of a NCAM protein inferred from the sequences of overlapping cDNA clones.

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