Fucoidan reduces inflammatory response in a rat model of hepatic ischemia–reperfusion injury

2015 ◽  
Vol 93 (11) ◽  
pp. 999-1005 ◽  
Author(s):  
Xiao-jing Li ◽  
Qi-fa Ye
Keyword(s):  
Signaling Pathway ◽  
Inflammatory Cell ◽  
Ischemia Reperfusion ◽  
Treated Group ◽  
Inflammatory Cell Infiltration ◽  
Cell Infiltration ◽  
Sulfated Polysaccharides ◽  
Control Group ◽  
Mrna Levels ◽  
Inflammatory Signaling

Ischemia–reperfusion (I/R) injury after a liver transplant is a major cause of severe complications that lead to graft dysfunction. Fucoidan, a complex of sulfated polysaccharides derived from marine brown algae, demonstrated antiapoptotic as well as potential anti-inflammatory properties in previous studies. Fucoidan has also shown protective effects on I/R-injured kidney and heart. However, whether fucoidan can attenuate hepatic I/R injury has not been examined. To clarify the role of fucoidan in hepatic I/R injury, Sprague–Dawley rats were subjected to sham operation or ischemia followed by reperfusion with treatment of saline or fucoidan (50, 100, or 200 mg·(kg body mass)−1·d−1). The fucoidan-treated group showed decreased levels of alanine aminotransferase and aspartate aminotransferase compared with the control group. Myeloperoxidase and malondialdehyde activities and mRNA levels of CD11b in the fucoidan-treated group were significantly decreased. Hepatocellular swelling/necrosis, sinusoidal/vascular congestion, and inflammatory cell infiltration were also attenuated in the fucoidan group. The expression of TNF-α, IL-6, IL-1β, CXCL-10, VCAM-1, and ICAM-1 were markedly decreased in the samples from the fucoidan-treated group. Fucoidan largely prevented activation of the inflammatory signaling pathway, compared with the control group. In summary, fucoidan can protect the liver from I/R injury through suppressing activation of the inflammatory signaling pathway, as well as the expression of inflammatory mediators, and inflammatory cell infiltration.

scholarly journals Topical Application of Sadat-Habdan Mesenchymal Stimulating Peptide (SHMSP) Accelerates Wound Healing in Diabetic Rabbits

2012 ◽  
Vol 2012 ◽  
pp. 1-6
Author(s):  
Abdulmohsen H. Al-Elq ◽  
Mir Sadat-Ali ◽  
Mohamed Elsharawy ◽  
Ibrahim Al-Habdan ◽  
Fatin Othman Al-Aqeel ◽  
...  
Keyword(s):  
Wound Healing ◽  
Blood Vessel ◽  
Topical Application ◽  
Inflammatory Cell ◽  
Inflammatory Cell Infiltration ◽  
Cell Infiltration ◽  
Control Group ◽  
Collagen Deposition ◽  
Peptide Group ◽  
Diabetic Rabbits

Objective. Diminished wound healing is a common problem in diabetic patients due to diminished angiogenesis. SHMSP was found to promote angiogenesis. The present study was carried out to examine the effect of this peptide in healing of wounds in diabetic rabbits.Materials and Methods. Twenty male New Zealand rabbits were used in this study. Diabetes mellitus was induced and the rabbits were randomly divided into two equal groups: control group and peptide group. A-full thickness punch biopsy was made to create a wound of about 10 mm on the right ears of all rabbits. Every day, the wound was cleaned with saline in control groups. In the peptide group, 15 mg of SHMSP was applied after cleaning. On day 15th, all animals were sacrificed, and the wounds were excised with a rim of 5 mm of normal surrounding tissue. Histo-pathological assessment of wound healing, inflammatory cell infiltration, blood vessel proliferation, and collagen deposition was performed.Results. There were no deaths among the groups. There was significant increase in wound healing, blood vessel proliferation and collagen deposition, and significant decrease in inflammatory cell infiltration in the peptide group compared to the control group.Conclusion. Topical application of SHMSP improves wound healing in diabetic rabbits.

scholarly journals Histopathological study of Effects of continuous injection of dexamethasone on wound healing in rabbits

2011 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
F. Salim
Keyword(s):  
Wound Healing ◽  
Control Animal ◽  
Inflammatory Cell ◽  
Treated Group ◽  
Inflammatory Cell Infiltration ◽  
Cell Infiltration ◽  
Histopathological Study ◽  
Continuous Injection ◽  
Made In

In this study 16 rabbit was divided in to two groups equally the first group was daily injected by dexamethasone(1 mg/Kg) for 21 days,the second group was left without any treatment as a control. An excision was made in the skin of rabbits and then sutured with silk band 2.5cm.The skin spicemen were taken for histopathological sections for wound healing evaluation at postoperative days 3,7and 14. The scars of the dexamethasone-treated group were less formation. The epithelization ,collagenization and the inflammatory cell infiltration was less intense in the dexamethasone- treated group in compare with the control animal.

scholarly journals Tulsi (Ocimum sanctum) Leaf Ethanol Extract Reduces Inflammatory Cell Infiltration in Aspirin-Induced Gastritis Rats

2020 ◽  
Vol 31 (1) ◽  
pp. 49
Author(s):  
Festi Artika Sari ◽  
Willy Sandhika ◽  
Tri Hartini Yuliawati
Keyword(s):  
Treatment Group ◽  
Rat Model ◽  
Leaf Extract ◽  
Inflammatory Cell ◽  
Negative Control ◽  
Inflammatory Cell Infiltration ◽  
Male Rats ◽  
Cell Infiltration ◽  
Ocimum Sanctum ◽  
Control Group

<p class="ISIABSTRAKINGGRIS">Gastritis is an inflammation of the gastric mucosa. Tulsi leaf extract has phenol, flavonoid and saponin compounds which are potential as antioxidant and increase defensive factors in the gastric. The purpose of this research was to find out the effect of tulsi (Ocimum sanctum) leaf extract in polymorphonuclear (PMN) inflammatory cell infiltration in gastric of aspirin-induced gastritis rat model. This study was laboratory experimental research using post-test only control group design. Randomly, 27 male rats were divided into 3 groups, the first group was not induced by aspirin and extract as negative control, the second group was induced by aspirin of 600 mg/kgBW as positive control, and the third group was induced by aspirin of 600 mg/kgBW and was given Ocimum sanctum extract at a dose of 400 mg/kgBW as treatment group. Gastric of the rats were taken on 16th day for histopathology evaluation using hematoxylin and eosin (HE) staining. Evaluation was done by calculating the PMN inflammatory cell infiltration in mucosal and submucosal layer. The results of the average number of PMN inflammatory cell in the gastric tissue of the treatment group showed a significant decrease compared to the positive and negative control groups with P-value &lt;0.05. This study proved that Ocimum sanctum leaf extract administration with the dose of 400 mg/kgBW can decrease gastritis inflammation by reducing PMN inflammatory cell in gastric of aspirin-induced gastritis rat model.</p>

scholarly journals Morphological changes in the ventilated lung after thoracic surgery

2021 ◽  
Vol 27 (2) ◽  
pp. 11-15
Author(s):  
A.V. Sydiuk ◽  
O.Ye. Sydiuk ◽  
V.O. Kropelnytskyi ◽  
A.S. Klimas
Keyword(s):  
Thoracic Surgery ◽  
Inflammatory Cell ◽  
Morphological Changes ◽  
Lung Ventilation ◽  
Inflammatory Cell Infiltration ◽  
Lung Damage ◽  
Cell Infiltration ◽  
Control Group ◽  
Study Group ◽  
Alveolar Wall

There are many studies of single lung ventilation (SLV), which are mostly limited to reducing lung damage by changing ventilation strategies or comparing differences in lung damage caused by different lung isolation devices. There is no study comparing the morphological changes of ventilated lungs using different strategies of artificial lung ventilation. The aim of the study was to examine pathomorphological changes in the ventilated lung during thoracic surgery using SLV. A randomized study was performed on 40 patients who underwent thoracic surgery using SLV. After signing the informed consent, the patients were divided into two groups. In the control group (40 patients) with ventilation “by volume” (VCV), in the study group – ventilation “by pressure” (PCV) with the addition of PEEP 5 mm. During surgery in the thoracic cavity with the help of SLV performed transbronchial biopsy of the parenchyma of the ventilated lung to study the pathomorphological changes after ventilation with different modes. The biopsy was performed using a bronchoscope, which was inserted through the endotracheal tube into the lung, opposite the side of the operation (after the end of SLV and “inclusion” of the collapsed lung). The morphological changes caused by the ventilator were investigated. Pathomorphological examination of the non-collapsed lung (which participated in gas exchange during SLV) was as follows: the control group found significant changes in the alveolar wall with its edema, thickening of the interstitial lung, vascular occlusion, severe inflammatory cell infiltration and damage to alveolar structures. The alveoli collapsed and disappeared. The alveolar structures of the study group were better than the control group: pulmonary interstitial and alveolar exudates, as well as inflammatory cell infiltration were significantly reduced compared to those in the control group. The results of the study suggest that the use of PCV with “moderate” PEEP can significantly improve oxygenation and reduce acute ventilatory injury of the lungs compared to VCV during SLV.

Abstract TP279: Brain-Derived Microparticles Mediate Neuroinflammation After Stroke

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Zhili Chen ◽  
Michael Chopp ◽  
Alex Zacharek ◽  
Wei Li ◽  
Poornima Venkat ◽  
...  
Keyword(s):  
Inflammatory Cell ◽  
Inflammatory Cell Infiltration ◽  
Neurological Deficits ◽  
Cell Infiltration ◽  
Control Group ◽  
Lesion Volume ◽  
Inflammatory Factor ◽  
Ischemic Brain ◽  
Factor Expression ◽  
Anti Inflammatory

Background and Purpose: Microparticles (MPs, ~ size between 0.1-1mm) are lipid encased containers, and are involved in intercellular communication and regulate inflammation. Stroke increases brain derived MP (BDMP) secretion which induces neuroinflammation. Milk fat globule-EGF factor-8 (MFGE8) promotes apoptotic cell clearance and limits pathogenic antigen cross presentation. In this study, we investigate whether BDMP affects stroke-induced neuroinflammation; whether MFGE8 treatment reduces stroke or BDMP-induced neuroinflammation and improves functional outcome after stroke. Method: 1) BDMPs were extracted from ischemic brain 24h after dMCAo by ultracentrifugation. 2) Adult (8 months) male C57BL/6J mice were subjected to dMCAo and were injected via tail vein 3h after stroke with: A) PBS (n=5/group); B) +BDMP(1.5х10 8 ,n=6/group); C)+MFGE8 (Lactadherin, 400ug/kg, n=5/group); D) +BDMP+MFGE8 (n=6/group). A battery of neurological function outcomes and immunostaining were performed. Blood plasma was used for Western blot assay. Result: 1) Compared with the Stroke+PBS control group, Stroke+BDMP significantly increases inflammatory factor expression in the circulation, increases lesion volume, neurological deficits, blood brain barrier (BBB) leakage, microglial activation, and inflammatory cell infiltration (CD45, microglia/macrophage, Neutrophils) and inflammatory factor (TNFα, IL6, IL1β) expression in brain, and increases axon/white matter (WM) damage; 2) Compared to Stroke+PBS and Stroke+BDMP groups, Stroke+MFGE8 and Stroke+BDMP+MFGE8 mice exhibited significantly improved neurological outcome; decreased lesion volume and BBB leakage, reduced axon/WM damage, and decreased inflammatory cell infiltration and inflammatory factor expression in the ischemic border, respectively. MFGE8 treatment significantly increased anti-inflammatory factor (IL10) expression in ischemic brain, and decreased IL1β expression in circulation compared to Stroke+PBS and Stroke+BDMP groups, respectively. Conclusion: BDMP increases neuroinflammation and induces worse brain damage after stroke. MFGE8 treatment reduces stroke and BDMP-induced neurological deficits possibly via its anti-inflammatory effects.

Stromal Cell-Derived Factor (SDF)-1-Pretreated Bone Marrow Mesenchymal Stem Cells (BMSCs) Ameliorates Acute Kidney Injury in Mice

2021 ◽  
Vol 11 (7) ◽  
pp. 1255-1262
Author(s):  
Xiaohui Dong ◽  
Xifeng Lv
Keyword(s):  
Inflammatory Cell ◽  
Kidney Injury ◽  
Inflammatory Cell Infiltration ◽  
Cell Infiltration ◽  
Control Group ◽  
Serum Cytokines ◽  
Marrow Mesenchymal Stem Cells ◽  
Stromal Cell Derived Factor ◽  
Group 2 ◽  
Experimental Group

To explore the effects of stromal cell-derived factor (SDF-1) pretreatment of bone marrow mesenchymal stem cells (BMSCs) on acute kidney injury (AKI) in mice. BMSCs were cultured and treated with SDF-1 to detect osteogenic and adipogenic ability. Cisplatin (20 mg/kg) was used to establish AKI model and then divided into blank group, control group 2 (BMSCs injection), and experimental group (intraperitoneal injection of BMSCs treated with SDF-1 (80 ng/ml)) followed by analysis of serum cytokines (Toll like receptor 4 (TLR4), tumor necrosis factor-α (TNF-α), and interleukine-6 (IL-6)) by enzyme linked immunosorbent assay (ELISA). In cultured BMSCs, positive rates of CD29, CD44, CD45, and CD11b were 98.2%, 97.6%, 2.5% and 2.1%, respectively. When the concentration of SDF-1 was within 80 ng/mL, the chemotaxis and proliferation ability was dose-dependent (p < 0.05). SDF-1 pretreatment did not affect BMSCs adipogenic and osteogenic abilities. The creatinine and serum cytokines (TLR4, TNF-α, and IL-6) level in experimental group showed statistical significance (p < 0.05). At 24 h, thrombosis and tubular dilatation in the mesangial region of control group 2 and experimental group under light microscope were similar without difference of inflammatory cell infiltration and fibrosis. At 72 h, the glomerular mesangium widened in control group 2 with focal segmental sclerosis, renal tubules dilated, and protein casts and inflammatory cell infiltration and fibrosis. Experimental group showed a small amount of cell proliferation in the glomerular mesangium with few inflammatory cell infiltration and fibrosis. SDF-1 can enhance the migration and proliferation activity of BMSCs, reduce extracellular matrix precipitation, improve renal fibrosis, and alleviate AKI.

scholarly journals PECAM1 Combines With CXCR4 to Trigger Inflammatory Cell Infiltration and Pulpitis Progression Through Activating the NF-κB Signaling Pathway

2020 ◽  
Vol 8 ◽  
Author(s):  
Yonghong Liu ◽  
Zhiyong Zhang ◽  
Wenjing Li ◽  
Songbo Tian
Keyword(s):  
Signaling Pathway ◽  
Dental Pulp ◽  
Inflammatory Cell ◽  
Inflammatory Cell Infiltration ◽  
Cell Infiltration ◽  
Bioinformatics Analyses ◽  
Protein Protein Interaction ◽  
Platelet Endothelial Cell Adhesion ◽  
Human Dental Pulp

Pulpitis is a frequent bacterially driven inflammation featured with the local accumulation of inflammatory products in human dental pulps. A GEO dataset GSE16134 comprising data of inflamed dental pulp tissues was used for bioinformatics analyses. A protein-protein interaction (PPI) analysis suggested that chemokine receptor 4 (CXCR4) owned a high correlation with platelet endothelial cell adhesion molecule-1 (PECAM1). A rat model with pulpitis was established, and lipopolysaccharide (LPS)-induced human dental pulp fibroblasts (HDPFs) were used for in vitro experiments. Then, high expression of PECAM1 and CXCR4 was validated in the inflamed dental pulp tissues in rats and in LPS-induced HDPFs. Either downregulation of PECAM1 or CXCR4 suppressed inflammatory cell infiltration in inflamed tissues as well as the inflammation and apoptosis of HDPFs. A transcription factor myocyte-enhancer factor 2 (MEF2C) was predicted and validated as a positive regulator of either PECAM1 or CXCR4, which activated the NF-κB signaling pathway and promoted pulpitis progression. To sum up, this study suggested that MEF2C transcriptionally activates PECAM1 and CXCR4 to activate the B-cell and NF-κB signaling pathways, leading to inflammatory cell infiltration and pulpitis progression.

The effect of OK-432 (Picibanil) injection on the histopathology of nasal turbinate

2015 ◽  
Vol 129 (12) ◽  
pp. 1208-1212
Author(s):  
S Sengul ◽  
İ Kaygusuz ◽  
M M Akin ◽  
Ş Yalcin ◽  
T Karlidag ◽  
...  
Keyword(s):  
Inflammatory Cell ◽  
Cell Loss ◽  
Treated Group ◽  
Inflammatory Cell Infiltration ◽  
Cell Infiltration ◽  
Saline Control ◽  
Histopathological Changes ◽  
Nasal Turbinate ◽  
Treatment Groups ◽  
Significant Difference

AbstractObjective:This study aimed to assess the histopathological effect of OK-432 (Picibanil) on rabbit nasal turbinates.Methods:A total of 21 rabbits were divided into 3 treatment groups and various parts of both nasal turbinates were injected with 0.5 ml OK-432, 0.2 ml OK-432 or 0.6 ml saline (control). Bilateral nasal turbinates were later excised and studied under light microscopy to assess any histopathological changes.Results:Animals in the 0.2 ml and 0.5 ml OK-432 groups exhibited mild ciliary loss, goblet cell loss and epithelial damage, and a marked increase in inflammatory cell infiltration, submucosal vascularisation and fibrosis. There was a significant difference in histopathological changes between the two OK-432 treated groups. In addition, each OK-432 treated group had significantly more inflammatory cell infiltration, increased submucosal vascularisation and fibrosis compared with controls.Conclusion:The marked fibrosis observed in OK-432-injected turbinates may be responsible for a reduction in turbinate size.

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