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  • Hobbs McGarry posted an update 3 weeks, 5 days ago

    Primary Sjögren’s syndrome (pSS) is an autoimmune disease characterized by a lymphocytic infiltrate in salivary glands driving to epithelial damage. The pSS patients present heterogenic clinical and serological characteristics. This heterogenicity could be due to the cytokine microenvironment. Cytokine levels have been analyzed and reported individually, showing controversial results; for that reason, we considered essential to evaluate a cluster of cytokines and relate them with antibody levels and clinical characteristics to find pSS subgroups.

    Ninety-nine pSS patients, diagnosed by the 2016 ACR/EULAR classification criteria, and 76 control subjects (CS) were included. Cytokine quantification was performed by Multiplex assay. Principal component analysis (PCA) was realized, and the K-mean test was used to identify clusters/groups. Groups were analyzed by the Kruskal-Wallis test and the Bonferroni test.

    Higher IFN-γ, IL-17F, IL-21, IL-23, IL-4, and IL-31 levels were observed in pSS patients in comparislp subclassify the primary Sjögren syndrome patients for a better understanding of the clinical phenotype that impacts the treatment approach.Focal and segmental glomerulosclerosis (FSGS) is a histological pattern frequently found in patients with nephrotic syndrome that often progress to end-stage kidney disease. The initial step in development of this histologically defined entity is injury and ultimately depletion of podocytes, highly arborized interdigitating cells on the glomerular capillaries with important function for the glomerular filtration barrier. Since there are still no causal therapeutic options, animal models are needed to develop new treatment strategies. #link# Here, we present an FSGS-like model in zebrafish larvae, an eligible vertebrate model for kidney research. In a transgenic zebrafish strain, podocytes were depleted, and the glomerular response was investigated by histological and morphometrical analysis combined with immunofluorescence staining and ultrastructural analysis by transmission electron microscopy. By intravenous injection of fluorescent high-molecular weight dextran, we confirmed leakage of the size selective filtration barrier. Additionally, we observed severe podocyte foot process effacement of remaining podocytes, activation of proximal tubule-like parietal epithelial cells identified by ultrastructural cytomorphology, and expression of proximal tubule markers. These activated cells deposited extracellular matrix on the glomerular tuft which are all hallmarks of FSGS. Our findings indicate that glomerular response to podocyte depletion in larval zebrafish resembles human FSGS in several important characteristics. Therefore, this model will help to investigate the disease development and the effects of potential drugs in a living organism.Polyphyllin I (PPI) is a natural phytochemical drug isolated from plants which can inhibit the proliferation of cancer cells. One of the PPI tumor-inhibitory effects is through downregulating the expression of Cancerous Inhibitor of PP2A (CIP2A), the latter, is found upregulated in Alzheimer’s disease (AD) brains and participates in the development of AD. In this study, we explored the application of PPI in experimental AD treatment in CIP2A-overexpressed cells and 3XTg-AD mice. In CIP2A-overexpressed HEK293 cells or primary neurons, PPI effectively reduced CIP2A level, activated PP2A, and decreased the phosphorylation of tau/APP and the level of Aβ. Furthermore, synaptic protein levels were restored by PPI in primary neurons overexpressing CIP2A. Animal experiments in 3XTg-AD mice revealed that PPI treatment resulted in decreased CIP2A expression and PP2A re-activation. With the modification of CIP2A-PP2A signaling, the hyperphosphorylation of tau/APP and Aβ overproduction were prevented, and the cognitive impairments of 3XTg-AD mice were rescued. In summary, PPI ameliorated AD-like pathology and cognitive impairment through modulating CIP2A-PP2A signaling pathway. It may be a potential drug candidate for the treatment of AD.The aim is to clarify the concept of “obstetric violence in the United States of America.” Obstetric violence (OV) is a poorly defined and rarely applied concept in the United States that causes significant harm and requires recognition. The design is a concept analysis to examine the structure and function of OV in the United States. An English language literature review with no date restrictions was performed using CINAHL, PubMed, and Google search. The search was expanded to the related terms “birth rape” and “birth trauma.” The concept analysis was conducted using the method outlined by Walker and Avant. LY-3475070 inhibitor synthesized definition proposed is Obstetric violence is abuse or mistreatment by a health care provider of a female who is engaged in fertility treatment, preconception care, pregnant, birthing, or postpartum; or the performance of any invasive or surgical procedure during the full span of the childbearing continuum without informed consent, that is coerced, or in violation of refusal. It is a sex-specific form of violence against women (VAW) that is a violation of human rights. A clear definition and understanding of OV in the United States will allow for its recognition. A conceptual basis for naming it can lead to better knowing its prevalence, further studies, and operationalizing the term to create pathways for accountability and restitution. Nurses are in a unique position to minimize OV risk and to promote individual and unit-based responses for zero-tolerance.Extracellular cold-inducible RNA-binding protein (eCIRP) is a damage-associated molecular pattern. Neutrophils present in the mononuclear cell fraction of Ficoll gradient separation are called low-density neutrophils (LDNs). Here we report the novel role of eCIRP on LDNs’ heterogeneity in sepsis. Sepsis was induced in male C57BL/6 wild-type (WT) and CIRP-/- mice by cecal ligation and puncture (CLP). At 20 h after CLP, LDNs in the blood were isolated by Ficoll gradient separation, followed by staining the cells with anti-Ly6G and anti-CD11b Abs and detection by flow cytometry. Sepsis or recombinant murine CIRP (rmCIRP) injection in mice resulted in significant increase in the frequency (%) and number of Ly6G+ CD11bhi and Ly6G+ CD11blo LDNs in the blood compared to sham- or vehicle-treated mice. At 20 h of CLP, CIRP-/- mice had significantly lower frequency and number of Ly6G+ CD11bhi and Ly6G+ CD11blo LDNs in the blood compared to WT mice. In sepsis mice or rmCIRP-injected mice, compared to Ly6G+ CD11blo LDNs, the expression of CXCR4, ICAM-1, and iNOS and formation of reactive oxygen species, and neutrophil extracellular traps in Ly6G+ CD11bhi LDNs in the blood were significantly increased.

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