scholarly journals Characterization of Mesenchymal Stem Cells Derived from Patients with Cerebellar Ataxia: Downregulation of the Anti-Inflammatory Secretome Profile

Cells ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 212
Author(s):  
Jong-Heon Kim ◽  
Jin Han ◽  
Donggun Seo ◽  
Jong Hyuk Yoon ◽  
Dongyeong Yoon ◽  
...  
Keyword(s):  
Cerebellar Ataxia ◽  
Inflammatory Factors ◽  
Promising Alternative ◽  
Functional Differences ◽  
Alternative Approach ◽  
Scratch Wound ◽  
New Strategy ◽  
Anti Inflammatory ◽  
Scratch Wound Healing Assay

Mesenchymal stem cell (MSC) therapy is a promising alternative approach for the treatment of neurodegenerative diseases, according to its neuroprotective and immunomodulatory potential. Despite numerous clinical trials involving autologous MSCs, their outcomes have often been unsuccessful. Several reports have indicated that MSCs from patients have low capacities in terms of the secretion of neurotrophic or anti-inflammatory factors, which might be associated with cell senescence or disease severity. Therefore, a new strategy to improve their capacities is required for optimal efficacy of autologous MSC therapy. In this study, we compared the secretory potential of MSCs among cerebellar ataxia patients (CA-MSCs) and healthy individuals (H-MSCs). Our results, including secretome analysis findings, revealed that CA-MSCs have lower capacities in terms of proliferation, oxidative stress response, motility, and immunomodulatory functions when compared with H-MSCs. The functional differences were validated in a scratch wound healing assay and neuron-glia co-cultures. In addition, the neuroprotective and immunoregulatory protein follistatin-like 1 (FSTL1) was identified as one of the downregulated proteins in the CA-MSC secretome, with suppressive effects on proinflammatory microglial activation. Our study findings suggest that targeting aspects of the downregulated anti-inflammatory secretome, such as FSTL1, might improve the efficacy of autologous MSC therapy for CA.

Characterization of Haemanthus coccineus extract and its bioactive component: A promising and novel anti-inflammatory approach

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
S Fuchs ◽  
L Tzung-Harn Hsieh ◽  
W Saarberg ◽  
L Schaefer ◽  
CAJ Erdelmeier ◽  
...  
Keyword(s):  
Bioactive Component ◽  
Anti Inflammatory

scholarly journals Polyphenols Extracted from Shanxi-Aged Vinegar Inhibit Inflammation in LPS-Induced RAW264.7 Macrophages and ICR Mice via the Suppression of MAPK/NF-κB Pathway Activation

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2745
Author(s):  
Peng Du ◽  
Jia Song ◽  
Huirui Qiu ◽  
Haorui Liu ◽  
Li Zhang ◽  
...  
Keyword(s):  
Comprehensive Evaluation ◽  
Fermented Food ◽  
Gas Chromatography Mass Spectrometry ◽  
Inflammatory Factors ◽  
Therapeutic Effects ◽  
Inflammatory Stress ◽  
Icr Mice ◽  
Raw264.7 Macrophages ◽  
Pathway Activation ◽  
Anti Inflammatory

Shanxi-aged vinegar, a traditional Chinese grain-fermented food that is rich in polyphenols, has been shown to have therapeutic effects on a variety of diseases. However, there has been no comprehensive evaluation of the anti-inflammatory activity of polyphenols extracted from Shanxi-aged vinegar (SAVEP) to date. The anti-inflammatory activities of SAVEP, both in RAW 264.7 macrophages and mice, were extensively investigated for the potential application of SAVEP as a novel anti-inflammatory agent. In order to confirm the notion that polyphenols could improve inflammatory symptoms, SAVEP was firstly detected by gas chromatography mass spectrometry (GC-MS). In total, 19 polyphenols were detected, including 12 phenolic acids. The study further investigated the protective effect of SAVEP on lipopolysaccharide-induced inflammation in RAW264.7 macrophages and ICR mice. The results showed that compared with those of the model group, SAVEP could remarkably recover the inflammation of macrophage RAW264.7 and ICR mice. SAVEP can normalise the expression of related proteins via the suppression of MAPK/NF-κB pathway activation, inhibiting the expression of iNOS and COX-2 proteins, and consequently the production of inflammatory factors, thus alleviating inflammatory stress. These results suggest that SAVEP may have a potential function against inflammation.

scholarly journals Polyphenolic Characterization of Merlot, Tannat and Syrah Skin Extracts at Different Degrees of Maturity and Anti-Inflammatory Potential in RAW 264.7 Cells

Foods ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 541
Author(s):  
Nawel Benbouguerra ◽  
Josep Valls-Fonayet ◽  
Stephanie Krisa ◽  
François Garcia ◽  
Cédric Saucier ◽  
...  
Keyword(s):  
Vitis Vinifera ◽  
Ultra Performance Liquid Chromatography ◽  
Raw 264.7 Cells ◽  
Triple Quadrupole Mass Spectrometer ◽  
Polyphenolic Composition ◽  
Anti Inflammatory ◽  
Red Grape ◽  
Species Production ◽  
Grape Varieties

(1) Background: Both sensory quality and healthy attributes of Vitis vinifera grapes used for winemaking are closely related with the polyphenolic composition of their skins. (2) Methods: In this study, the polyphenolic characterization (flavan-3-ols, procyanidins, flavonols, stilbenes, anthocyanins) was investigated by ultra performance liquid chromatography coupled to a triple quadrupole mass spectrometer (UPLC-QqQ-MS). Skins from Vitis vinifera Merlot, Tannat, and Syrah red grape varieties cultivated in the south of France at different stages of ripening in 2018 were used. The anti-inflammatory and the antioxidant potential of the extracts were evaluated by the measure of nitric oxide (NO) and the intracellular reactive oxygen species production (ROS) in lipopolysaccharide (LPS)-stimulated macrophages. (3) Results: 41 polyphenols were quantified in all samples. Generally, the flavan-3-ol and procyanidin content decreased during ripening whereas the anthocyanins and stilbenes increased. In addition, as a novelty of this work, a wide identification and characterization of monomeric and oligomeric stilbenes was assessed by using authentic standards isolated in our laboratory, some of them (parthenocissin A and miyabenol C) reported for the first time in Merlot, Tannat and Syrah cultivars. The before-veraison skin extracts of all studied varieties, exhibited higher NO and ROS productions inhibition (>50%) proving both antioxidant and anti-inflammatory properties.

scholarly journals Isolation and Characterization of Salmonella Jumbo-Phage pSal-SNUABM-04

Viruses ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 27
Author(s):  
Jun Kwon ◽  
Sang Guen Kim ◽  
Hyoun Joong Kim ◽  
Sib Sankar Giri ◽  
Sang Wha Kim ◽  
...  
Keyword(s):  
Morphological Traits ◽  
Open Reading Frames ◽  
Genome Comparison ◽  
The Novel ◽  
Promising Alternative ◽  
Isolation And Characterization ◽  
Global Issue ◽  
Reading Frames ◽  
Predicted Function

The increasing emergence of antimicrobial resistance has become a global issue. Therefore, many researchers have attempted to develop alternative antibiotics. One promising alternative is bacteriophage. In this study, we focused on a jumbo-phage infecting Salmonella isolated from exotic pet markets. Using a Salmonella strain isolated from reptiles as a host, we isolated and characterized the novel jumbo-bacteriophage pSal-SNUABM-04. This phage was investigated in terms of its morphology, host infectivity, growth and lysis kinetics, and genome. The phage was classified as Myoviridae based on its morphological traits and showed a comparatively wide host range. The lysis efficacy test showed that the phage can inhibit bacterial growth in the planktonic state. Genetic analysis revealed that the phage possesses a 239,626-base pair genome with 280 putative open reading frames, 76 of which have a predicted function and 195 of which have none. By genome comparison with other jumbo phages, the phage was designated as a novel member of Machinavirus composed of Erwnina phages.

scholarly journals Luteolin transforms the polarity of bone marrow-derived macrophages to regulate the cytokine storm

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Shuxia Wang ◽  
Shuhang Xu ◽  
Jing Zhou ◽  
Li Zhang ◽  
Xiaodong Mao ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Inflammatory Responses ◽  
Bone Marrow Cells ◽  
Membrane Surface ◽  
Inflammatory Factors ◽  
Mouse Bone Marrow ◽  
Macrophage Polarisation ◽  
Ifn Γ ◽  
Anti Inflammatory ◽  
M1 Type

Abstract Background Macrophages are indispensable regulators of inflammatory responses. Macrophage polarisation and their secreted inflammatory factors have an association with the outcome of inflammation. Luteolin, a flavonoid abundant in plants, has anti-inflammatory activity, but whether luteolin can manipulate M1/M2 polarisation of bone marrow-derived macrophages (BMDMs) to suppress inflammation is still unclear. This study aimed to observe the effects of luteolin on the polarity of BMDMs derived from C57BL/6 mice and the expression of inflammatory factors, to explore the mechanism by which luteolin regulates the BMDM polarity. Methods M1-polarised BMDMs were induced by lipopolysaccharide (LPS) + interferon (IFN)-γ and M2-polarisation were stimulated with interleukin (IL)-4. BMDM morphology and phagocytosis were observed by laser confocal microscopy; levels of BMDM differentiation and cluster of differentiation (CD)11c or CD206 on the membrane surface were assessed by flow cytometry (FCM); mRNA and protein levels of M1/M2-type inflammatory factors were performed by qPCR and ELISA, respectively; and the expression of p-STAT1 and p-STAT6 protein pathways was detected by Western-blotting. Results The isolated mouse bone marrow cells were successfully differentiated into BMDMs, LPS + IFN-γ induced BMDM M1-phenotype polarisation, and IL-4 induced M2-phenotype polarisation. After M1-polarised BMDMs were treated with luteolin, the phagocytosis of M1-polarized BMDMs was reduced, and the M1-type pro-inflammatory factors including IL-6, tumour necrosis factor (TNF)-α, inducible nitric oxide synthase (iNOS), and CD86 were downregulated while the M2-type anti-inflammatory factors including IL-10, IL-13, found in inflammatory zone (FIZZ)1, Arginase (Arg)1 and CD206 were upregulated. Additionally, the expression of M1-type surface marker CD11c decreased. Nevertheless, the M2-type marker CD206 increased; and the levels of inflammatory signalling proteins phosphorylated signal transducer and activator of transcription (p-STAT)1 and p-STAT6 were attenuated and enhanced, respectively. Conclusions Our study suggests that luteolin may transform BMDM polarity through p-STAT1/6 to regulate the expression of inflammatory mediators, thereby inhibiting inflammation. Naturally occurring luteolin holds promise as an anti-inflammatory and immunomodulatory agent.

scholarly journals Biomimetic nanotherapy: core–shell structured nanocomplexes based on the neutrophil membrane for targeted therapy of lymphoma

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Qiangqiang Zhao ◽  
Duanfeng Jiang ◽  
Xiaoying Sun ◽  
Qiuyu Mo ◽  
Shaobin Chen ◽  
...  
Keyword(s):  
Mesoporous Silica Nanoparticles ◽  
Treatment Options ◽  
Inflammatory Factors ◽  
Main Method ◽  
Tnf Α ◽  
Good Biocompatibility ◽  
Inflammatory Drugs ◽  
Anti Inflammatory ◽  
New Treatment ◽  
Lymphoma Therapy

Abstract Background Non-Hodgkin’s lymphoma (NHL) is a malignant disease of lymphoid tissue. At present, chemotherapy is still the main method for the treatment of NHL. R-CHOP can significantly improve the survival rate of patients. Unfortunately, DOX is the main cytotoxic drug in R-CHOP and it can lead to adverse reactions. Therefore, it is particularly important to uncover new treatment options for NHL. Results In this study, a novel anti-tumor nanoparticle complex Nm@MSNs-DOX/SM was designed and constructed in this study. Mesoporous silica nanoparticles (MSNs) loaded with Doxorubicin (DOX) and anti-inflammatory drugs Shanzhiside methylester (SM) were used as the core of nanoparticles. Neutrophil membrane (Nm) can be coated with multiple nanonuclei as a shell. DOX combined with SM can enhance the anti-tumor effect, and induce apoptosis of lymphoma cells and inhibit the expression of inflammatory factors related to tumorigenesis depending on the regulation of Bcl-2 family-mediated mitochondrial pathways, such as TNF-α and IL-1β. Consequently, the tumor microenvironment (TME) was reshaped, and the anti-tumor effect of DOX was amplified. Besides, Nm has good biocompatibility and can enhance the EPR effect of Nm@MSNs-DOX/SM and increase the effect of active targeting tumors. Conclusions This suggests that the Nm-modified drug delivery system Nm@MSNs-DOX/SM is a promising targeted chemotherapy and anti-inflammatory therapy nanocomplex, and may be employed as a specific and efficient anti-Lymphoma therapy.

scholarly journals From Inflammation to the Onset of Fibrosis through A2A Receptors in Kidneys from Deceased Donors

2020 ◽  
Vol 21 (22) ◽  
pp. 8826
Author(s):  
Elena Guillén-Gómez ◽  
Irene Silva ◽  
Núria Serra ◽  
Francisco Caballero ◽  
Jesús Leal ◽  
...  
Keyword(s):  
Deceased Donor ◽  
Inflammatory Factors ◽  
Mrna Levels ◽  
A2a Adenosine Receptor ◽  
A2a Receptors ◽  
Tnf Α ◽  
Anti Inflammatory ◽  
Pka Pathway ◽  
Tgf Β1 ◽  
M2 Phenotype

Pretransplant graft inflammation could be involved in the worse prognosis of deceased donor (DD) kidney transplants. A2A adenosine receptor (A2AR) can stimulate anti-inflammatory M2 macrophages, leading to fibrosis if injury and inflammation persist. Pre-implantation biopsies of kidney donors (47 DD and 21 living donors (LD)) were used to analyze expression levels and activated intracellular pathways related to inflammatory and pro-fibrotic processes. A2AR expression and PKA pathway were enhanced in DD kidneys. A2AR gene expression correlated with TGF-β1 and other profibrotic markers, as well as CD163, C/EBPβ, and Col1A1, which are highly expressed in DD kidneys. TNF-α mRNA levels correlated with profibrotic and anti-inflammatory factors such as TGF-β1 and A2AR. Experiments with THP-1 cells point to the involvement of the TNF-α/NF-κB pathway in the up-regulation of A2AR, which induces the M2 phenotype increasing CD163 and TGF-β1 expression. In DD kidneys, the TNF-α/NF-κB pathway could be involved in the increase of A2AR expression, which would activate the PKA–CREB axis, inducing the macrophage M2 phenotype, TGF-β1 production, and ultimately, fibrosis. Thus, in inflamed DD kidneys, an increase in A2AR expression is associated with the onset of fibrosis, which may contribute to graft dysfunction and prognostic differences between DD and LD transplants.

scholarly journals Anti-nociceptive and anti-inflammatory effects of an aqueous extract of blended leaves of Ocimum gratissimum and Psidium guajava

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Akinyinka O. Alabi ◽  
Abayomi M. Ajayi ◽  
Osarume Omorogbe ◽  
Solomon Umukoro
Keyword(s):  
Acetic Acid ◽  
Aqueous Extract ◽  
Psidium Guajava ◽  
Antinociceptive Activity ◽  
Hot Plate ◽  
Hot Plate Test ◽  
Promising Alternative ◽  
Plate Test ◽  
Ocimum Gratissimum ◽  
Anti Inflammatory

Abstract Background To investigate the antinociceptive and anti-inflammatory activities of aqueous extract of a blended mixture of dried leaves of Ocimum gratissimum and Psidium guajava, a traditional analgesic drug polyherbal (TADP) used as a remedy for pain-related conditions. Methods Antinociceptive activity of TADP (100, 200 and 400 mg/kg) was evaluated in the hot plate test and acetic acid-induced nociception in mice while the anti-inflammatory was evaluated in carrageenan-induced paw oedema in rats. Levels of nitrite, myeloperoxidase, glutathione and malondialdehyde were assayed in carrageenan-induced paw tissue. Results TADP (200 and 400 mg/kg) significantly prolong the latency time in the hot-plate test. TADP (100–400 mg/kg) produced a dose-dependent significant inhibition of the acetic-acid induced abdominal constriction. The antinociceptive activity of TADP in the presence of naloxone and atropine was not reversed whereas yohimbine and glibenclamide significantly reversed it. TADP (100, 200 and 400 mg/kg) significantly reduced the swelling in the carrageenan-induced oedema model and also produced a reduction in the nitrite and myeloperoxidase level. TADP (400 mg/kg) significantly reduced malondialdehyde concentration and increase glutathione level in the carrageenan-induced rat paw. TADP significantly decrease the number of cellular infiltrates in the histopathological assessment. Conclusion These results indicate that polyherbal product containing blended leaves of Ocimum gratissimum and Psidium guajava possess antinociceptive and anti-inflammatory properties, hence represents a promising alternative remedy in inflammation-induced pain.

A Novel Processing Route for the Fabrication of Monolithic and Composite Silicon Nitride

1992 ◽  
Vol 287 ◽  
Author(s):  
R. V. Raman ◽  
S. V. Rele
Keyword(s):  
Volume Fraction ◽  
Hot Isostatic Pressing ◽  
Thermal Exposure ◽  
Processing Route ◽  
Promising Alternative ◽  
Α Phase ◽  
Key Issues ◽  
Novel Processing ◽  
Composite Silicon

ABSTRACTCurrent hot isostatic consolidation methodology used for the fabrication of complex-shaped Si3N4-based components requires the use of an expensive glass encapsulation technique and extended thermal exposure (in hours) of the specimen. An alternative consolidation approach involving the use of solid pressure transmitting media under high pressure, has enabled the consolidation of Si3N4 alloys without the need for glass encapsulation.Characterization of microstructures and mechanical properties of this (MOR, fracture toughness) material has been carried out and will be presented. It has been noted that in Si 3N4/8%Y2O3-4%Al2O3 composition, consolidated using this approach, a significantly larger volume fraction of α phase has been retained compared with typically observed conversion in α⇒ β in hot isostatically pressed material or sintered material.Key issues for addressing densification and microstructure control using this process are presented. This rapid consolidation approach appears to be a promising alternative to hot isostatic pressing for the fabrication of complex-shaped Si3N4 components.

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