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Boutanquoi PM, Khan AS, Cabeza L, Jantzen L, Gautier T, Yesylevskyy S, Ramseyer C, Masson D, Van Waes V, Hichami A, Khan NA. A novel fatty acid analogue triggers CD36-GPR120 interaction and exerts anti-inflammatory action in endotoxemia. Cell Mol Life Sci 2024; 81:176. [PMID: 38598021 PMCID: PMC11006773 DOI: 10.1007/s00018-024-05207-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 04/11/2024]
Abstract
Inflammation is a mediator of a number of chronic pathologies. We synthesized the diethyl (9Z,12Z)-octadeca-9,12-dien-1-ylphosphonate, called NKS3, which decreased lipopolysaccharide (LPS)-induced mRNA upregulation of proinflammatory cytokines (IL-1β, IL-6 and TNF-α) not only in primary intraperitoneal and lung alveolar macrophages, but also in freshly isolated mice lung slices. The in-silico studies suggested that NKS3, being CD36 agonist, will bind to GPR120. Co-immunoprecipitation and proximity ligation assays demonstrated that NKS3 induced protein-protein interaction of CD36 with GPR120in RAW 264.7 macrophage cell line. Furthermore, NKS3, via GPR120, decreased LPS-induced activation of TAB1/TAK1/JNK pathway and the LPS-induced mRNA expression of inflammatory markers in RAW 264.7 cells. In the acute lung injury model, NKS3 decreased lung fibrosis and inflammatory cytokines (IL-1β, IL-6 and TNF-α) and nitric oxide (NO) production in broncho-alveolar lavage fluid. NKS3 exerted a protective effect on LPS-induced remodeling of kidney and liver, and reduced circulating IL-1β, IL-6 and TNF-α concentrations. In a septic shock model, NKS3 gavage decreased significantly the LPS-induced mortality in mice. In the last, NKS3 decreased neuroinflammation in diet-induced obese mice. Altogether, these results suggest that NKS3 is a novel anti-inflammatory agent that could be used, in the future, for the treatment of inflammation-associated pathologies.
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Affiliation(s)
- Pierre-Marie Boutanquoi
- Physiologie de la Nutrition & Toxicologie, UMR U1231 INSERM/Université de Bourgogne/Agro-Sup, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
| | - Amira Sayed Khan
- Physiologie de la Nutrition & Toxicologie, UMR U1231 INSERM/Université de Bourgogne/Agro-Sup, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
| | - Lidia Cabeza
- Laboratoire de Recherches Intégratives en Neurosciences et Psychologie Cognitive-UR LINC, UFC, Besançon, France
| | - Lucas Jantzen
- Laboratoire de Recherches Intégratives en Neurosciences et Psychologie Cognitive-UR LINC, UFC, Besançon, France
| | - Thomas Gautier
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
- LIPNESS, UMR U1231 INSERM/UB/Agro-Sup, Université Bourgogne Franche-Comté, 21000, Dijon, France
| | - Semen Yesylevskyy
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 166 10, Prague 6, Czech Republic
- Laboratoire Chrono Environnement UMR CNRS6249, Université de Bourgogne Franche-Comté (UBFC), 16 route de Gray, 25030, Besançon, Cedex, France
- Receptor.AI Inc., 20-22 Wenlock Road, London, N1 7GU, UK
- Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
- Department of Physics of Biological Systems, Institute of Physics of the National Academy of Sciences of Ukraine, Prospect Nauky 46, Kiev, 03028, Ukraine
| | - Christophe Ramseyer
- Laboratoire Chrono Environnement UMR CNRS6249, Université de Bourgogne Franche-Comté (UBFC), 16 route de Gray, 25030, Besançon, Cedex, France
| | - David Masson
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
- LIPNESS, UMR U1231 INSERM/UB/Agro-Sup, Université Bourgogne Franche-Comté, 21000, Dijon, France
| | - Vincent Van Waes
- Laboratoire de Recherches Intégratives en Neurosciences et Psychologie Cognitive-UR LINC, UFC, Besançon, France
| | - Aziz Hichami
- Physiologie de la Nutrition & Toxicologie, UMR U1231 INSERM/Université de Bourgogne/Agro-Sup, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
| | - Naim Akhtar Khan
- Physiologie de la Nutrition & Toxicologie, UMR U1231 INSERM/Université de Bourgogne/Agro-Sup, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France.
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France.
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Usmani J, Wasim M, Ansari MN, Hassan MJ, Sharma M, Ahmad R. Potential therapeutic effect of Carica papaya leaves extract on immune response, biochemical and hematological mechanisms on cecal ligation and puncture model of sepsis in rats: an in vivo study. 3 Biotech 2023; 13:151. [PMID: 37131965 PMCID: PMC10148938 DOI: 10.1007/s13205-023-03567-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 04/19/2023] [Indexed: 05/04/2023] Open
Abstract
Antibiotics and immunotherapies possess unavoidable adverse effects that hinder sepsis management. Herbal drugs have demonstrated potential immunomodulatory properties vital for sepsis treatment. We hypothesized in the present study that the use of Carica papaya leaves extract had the potential to improve survival and modulate immune cytokine release during sepsis. Animals were subjected to cecal ligation and puncture (CLP) to induce sepsis. Septic rats divided into 10 groups received ethanol extract of C. papaya leaves (50 and 100 mg/kg), imipenem (120 mg/kg) and cyclophosphamide (CP, 10 mg/kg). To investigate the immunomodulatory potentials of EE, cytokine levels like interleukin (IL-6), tumor necrosis factor (TNF-α), and IL-10 along with hematological and biochemical parameters were analyzed. Our results exhibited improved survival rates concerning ethanol extract treatment alone and in combination with imipenem and CP (100%) as compared to the CLP group (33.3%) on day 7 post-surgery. The combination treatment of ethanol extract with imipenem and CP significantly (P < 0.001) ameliorated cytokine levels and hematological and biochemical parameters in septic rats. A histopathological examination suggested improved liver and kidney tissue condition after combination treatment as compared to the CLP group. Therefore, it was concluded that combination therapy of extract with imipenem and CP improved survival rates and marked immunomodulatory potential in septic rats compared to monotherapy. The findings suggested the use of a mixture of these drugs in clinical settings to treat sepsis.
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Affiliation(s)
- Juveria Usmani
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062 India
| | - Mohd Wasim
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062 India
| | - Mohd Nazam Ansari
- Department of Pharmacology and Toxicology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942 Kingdom of Saudi Arabia
| | - Mohammed Jaseem Hassan
- Department of Pathology, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002 India
| | - Manju Sharma
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062 India
| | - Razi Ahmad
- Department of Pharmacology, Hamdard Institute of Medical Sciences and Research, Jamia Hamdard, New Delhi, 110062 India
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Cazanga V, Palma C, Casanova T, Rojas D, Barrera K, Valenzuela C, Acevedo A, Ascui-Gac G, Pérez-Jeldres T, Pérez-Fernández R. Modulation of the Acute Inflammatory Response Induced by the Escherichia coli Lipopolysaccharide through the Interaction of Pentoxifylline and Florfenicol in a Rabbit Model. Antibiotics (Basel) 2023; 12:antibiotics12040639. [PMID: 37107001 PMCID: PMC10135147 DOI: 10.3390/antibiotics12040639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/12/2023] [Accepted: 03/22/2023] [Indexed: 04/29/2023] Open
Abstract
BACKGROUND Experimental reports have demonstrated that florfenicol (FFC) exerts potent anti-inflammatory effects, improving survival in a murine endotoxemia model. Considering the anti-inflammatory and immunomodulatory properties of pentoxifylline (PTX) as an adjuvant to enhance the efficacy of antibiotics, the anti-inflammatory effects of the interaction FFC/PTX over the E. coli Lipopolysaccharide (LPS)-induced acute inflammatory response was evaluated in rabbits. METHODS Twenty-five clinically healthy New Zealand rabbits (3.8 ± 0.2 kg body weight: bw), were distributed into five experimental groups. Group 1 (control): treated with 1 mL/4 kg bw of 0.9% saline solution (SS) intravenously (IV). Group 2 (LPS): treated with an IV dose of 5 µg/kg of LPS. Group 3 (pentoxifylline (PTX) + LPS): treated with an oral dose of 30 mg/kg PTX, followed by an IV dose of 5 µg/kg of LPS 45 min after PTX. Group 4 (Florfenicol (FFC) + LPS): treated with an IM dose of 20 mg/kg of FFC, followed by an IV dose of 5 µg/kg of LPS 45 min after FFC administration. Group 5 (PTX + FFC + LPS): treated with an oral dose of 30 mg/kg of PTX, followed by an IM dose of 20 mg/kg of FFC, and, 45 min after an IV dose of 5 µg/kg of LPS was administered. The anti-inflammatory response was evaluated through changes in plasma levels of interleukins (TNF-α, IL-1β and IL-6), C-reactive protein (CRP), and body temperature. RESULTS It has been shown that each drug produced a partial inhibition over the LPS-induced increase in TNF-α, IL-1β, and CRP. When both drugs were co-administered, a synergistic inhibitory effect on the IL-1β and CRP plasma concentrations was observed, associated with a synergic antipyretic effect. However, the co-administration of PTX/FFC failed to modify the LPS-induced increase in the TNF-α plasma concentrations. CONCLUSIONS We concluded that the combination of FFC and PTX in our LPS sepsis models demonstrates immunomodulatory effects. An apparent synergistic effect was observed for the IL-1β inhibition, which peaks at three hours and then decreases. At the same time, each drug alone was superior in reducing TNF-α levels, while the combination was inferior. However, the peak of TNF-α in this sepsis model was at 12 h. Therefore, in rabbits plasma IL-1β and TNF-α could be regulated independently, thus, further research is needed to explore the effects of this combination over a more prolonged period.
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Affiliation(s)
- Victoria Cazanga
- Pharmacology Laboratory, Department of Clinical Sciences, Faculty of Veterinary Sciences, Universidad de Concepción, Chillan 3820572, Chile
| | - Cristina Palma
- Pharmacology Laboratory, Department of Clinical Sciences, Faculty of Veterinary Sciences, Universidad de Concepción, Chillan 3820572, Chile
| | - Tomás Casanova
- Pharmacology Laboratory, Department of Clinical Sciences, Faculty of Veterinary Sciences, Universidad de Concepción, Chillan 3820572, Chile
| | - Daniela Rojas
- Veterinary Pathology Laboratory, Department of Pathology and Preventive Medicine, Faculty of Veterinary Sciences, Universidad de Concepción, Chillan 3820572, Chile
| | - Karin Barrera
- Pharmacology Laboratory, Department of Clinical Sciences, Faculty of Veterinary Sciences, Universidad de Concepción, Chillan 3820572, Chile
| | - Cristhian Valenzuela
- Pharmacology Laboratory, Department of Clinical Sciences, Faculty of Veterinary Sciences, Universidad de Concepción, Chillan 3820572, Chile
| | - Aracelly Acevedo
- Pharmacology Laboratory, Department of Clinical Sciences, Faculty of Veterinary Sciences, Universidad de Concepción, Chillan 3820572, Chile
| | - Gabriel Ascui-Gac
- Center for Autoimmunity and Inflammation, La Jolla Institute for Immunology, California University, San Diego, CA 92182, USA
| | - Tamara Pérez-Jeldres
- Department of Gastroenterology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Rubén Pérez-Fernández
- Pharmacology Laboratory, Department of Clinical Sciences, Faculty of Veterinary Sciences, Universidad de Concepción, Chillan 3820572, Chile
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Vivian Ma YH, Sparkes A, Saha S, Gariépy J. VISTA as a ligand downregulates LPS-mediated inflammation in macrophages and neutrophils. Cell Immunol 2022; 379:104581. [DOI: 10.1016/j.cellimm.2022.104581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 06/28/2022] [Accepted: 07/20/2022] [Indexed: 11/28/2022]
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Shandilya S, Kumar S, Kumar Jha N, Kumar Kesari K, Ruokolainen J. Interplay of gut microbiota and oxidative stress: Perspective on neurodegeneration and neuroprotection. J Adv Res 2022; 38:223-244. [PMID: 35572407 PMCID: PMC9091761 DOI: 10.1016/j.jare.2021.09.005] [Citation(s) in RCA: 72] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 07/05/2021] [Accepted: 09/14/2021] [Indexed: 12/12/2022] Open
Abstract
Background Recent research on the implications of gut microbiota on brain functions has helped to gather important information on the relationship between them. Pathogenesis of neurological disorders is found to be associated with dysregulation of gut-brain axis. Some gut bacteria metabolites are found to be directly associated with the increase in reactive oxygen species levels, one of the most important risk factors of neurodegeneration. Besides their morbid association, gut bacteria metabolites are also found to play a significant role in reducing the onset of these life-threatening brain disorders. Aim of Review Studies done in the recent past raises two most important link between gut microbiota and the brain: "gut microbiota-oxidative stress-neurodegeneration" and gut microbiota-antioxidant-neuroprotection. This review aims to gives a deep insight to our readers, of the collective studies done, focusing on the gut microbiota mediated oxidative stress involved in neurodegeneration along with a focus on those studies showing the involvement of gut microbiota and their metabolites in neuroprotection. Key Scientific Concepts of Review This review is focused on three main key concepts. Firstly, the mounting evidences from clinical and preclinical arenas shows the influence of gut microbiota mediated oxidative stress resulting in dysfunctional neurological processes. Therefore, we describe the potential role of gut microbiota influencing the vulnerability of brain to oxidative stress, and a budding causative in Alzheimer's and Parkinson's disease. Secondly, contributing roles of gut microbiota has been observed in attenuating oxidative stress and inflammation via its own metabolites or by producing secondary metabolites and, also modulation in gut microbiota population with antioxidative and anti-inflammatory probiotics have shown promising neuro resilience. Thirdly, high throughput in silico tools and databases also gives a correlation of gut microbiome, their metabolites and brain health, thus providing fascinating perspective and promising new avenues for therapeutic options.
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Affiliation(s)
- Shruti Shandilya
- Department of Applied Physics, School of Science, Aalto University, Espoo, Finland
| | - Sandeep Kumar
- Department of Biochemistry, International Institute of Veterinary Education and Research, Haryana, India
- Clinical Science, Targovax Oy, Saukonpaadenranta 2, Helsinki 00180, Finland
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology (SET), Sharda University, Plot no. 32–34, Knowledge Park III, Greater Noida 201310, India
| | | | - Janne Ruokolainen
- Department of Applied Physics, School of Science, Aalto University, Espoo, Finland
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Zanuzzo FS, Sandrelli RM, Peroni EDFC, Hall JR, Rise ML, Gamperl AK. Atlantic Salmon (Salmo salar) bacterial and viral innate immune responses are not impaired by florfenicol or tetracycline administration. FISH & SHELLFISH IMMUNOLOGY 2022; 123:298-313. [PMID: 35189324 DOI: 10.1016/j.fsi.2022.02.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 02/13/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
Antibiotics are used to treat bacterial infections in fish aquaculture, and these drugs can interact with immune cells/the immune system and potentially leave fish vulnerable to viral, fungal, parasitic, or other bacterial infections. However, the effects of antibiotics on fish immunity have largely been overlooked by the aquaculture industry. We tested, at 12 and 20 °C, whether tetracycline and florfenicol (the most commonly used antibiotics in commercial aquaculture), affected the Atlantic salmon's capacity to respond to bacterial or viral stimulation. Atlantic salmon were acclimated to 12 or 20 °C and fed with tetracycline or florfenicol (100 and 10 mg kg of body weight-1 day-1, respectively) medicated feed for 15 or 10 days, respectively. Thereafter, we evaluated their immune function prior to, and after, an intraperitoneal injection of Forte Micro (containing inactivated cultures of Aeromonas salmonicida, Vibrio anguillarum, Vibrio ordalii and Vibrio salmonicida) or the viral mimic polyriboinosinic polyribocytidylic acid (pIC). We measured the transcript expression levels of 8 anti-bacterial and 8 anti-viral putative biomarker genes, and the innate (leukocyte respiratory burst, plasma lysozyme activity and hemolytic activity of the alternative complement pathway) and cellular (relative number of erythrocytes, lymphocytes and thrombocytes, and granulocytes such as monocytes and neutrophils) responses to these challenges. Overall, we only found a few minor effects of either tetracycline or florfenicol on immune gene expression or function at either temperature. Although several studies have reported that antibiotics may negatively affect fish immune responses, our results show that industry-relevant dietary tetracycline and florfenicol treatments do not substantially impact the salmon's innate immune responses. Currently, this is the most comprehensive study on the effects of antibiotics administrated according to industry protocols on immune function in Atlantic salmon.
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Affiliation(s)
- Fábio S Zanuzzo
- Department of Ocean Sciences, Memorial University of Newfoundland and Labrador, St. John's, A1C 5S7, Canada.
| | - Rebeccah M Sandrelli
- Department of Ocean Sciences, Memorial University of Newfoundland and Labrador, St. John's, A1C 5S7, Canada
| | - Ellen de Fátima C Peroni
- Department of Ocean Sciences, Memorial University of Newfoundland and Labrador, St. John's, A1C 5S7, Canada
| | - Jennifer R Hall
- Aquatic Research Cluster, CREAIT Network, Ocean Sciences Centre, Memorial University of Newfoundland and Labrador, St. John's, A1C 5S7, Canada
| | - Matthew L Rise
- Department of Ocean Sciences, Memorial University of Newfoundland and Labrador, St. John's, A1C 5S7, Canada
| | - Anthony K Gamperl
- Department of Ocean Sciences, Memorial University of Newfoundland and Labrador, St. John's, A1C 5S7, Canada
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Antwi S, Oduro-Mensah D, Obiri DD, Osafo N, Antwi AO, Ansah HO, Ocloo A, Okine LKNA. Hydro-ethanol extract of Holarrhena floribunda stem bark exhibits anti-anaphylactic and anti-oedematogenic effects in murine models of acute inflammation. BMC Complement Med Ther 2022; 22:80. [PMID: 35305615 PMCID: PMC8934059 DOI: 10.1186/s12906-022-03565-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 03/10/2022] [Indexed: 11/15/2022] Open
Abstract
Background Holarrhena floribunda (G.Don) T.Durand & Schinz stem bark has anecdotal use in Ghanaian folk medicine for the management of inflammatory conditions. This study was conducted to investigate the in vivo anti-inflammatory activity of the bark extract using models of acute inflammation in male Sprague Dawley rats, C57BL/6 mice and ICR mice. Methods A 70% hydro-ethanol extract of the stem bark (HFE) was evaluated at doses of 5–500 mg/kg bw. Local anaphylaxis was modelled by the pinnal cutaneous anaphylactic test. Systemic anaphylaxis or sepsis were modeled by compound 48/80 or lipopolysaccharide, respectively. Clonidine-induced catalepsy was used to investigate the effect on histamine signaling. Anti-oedematogenic effect was assessed by induction with carrageenan. Effects on mediators of biphasic acute inflammation were studied using histamine and serotonin (early phase) or prostaglandin E2 (late phase). Results HFE demonstrated anti-inflammatory and/or anti-oedematogenic activity comparable to standard doses of aspirin and diclofenac (inhibitors of cyclooxygenases-1 and -2), chlorpheniramine (histamine H1-receptor antagonist), dexamethasone (glucocorticoid receptor agonist), granisetron (serotonin receptor antagonist) and sodium cromoglycate (inhibitor of mast cell degranulation). All observed HFE bioactivities increased with dose. Conclusions The data provide evidence that the extract of H. floribunda stem bark has anti-anaphylactic and anti-oedematogenic effects; by interfering with signalling or metabolism of histamine, serotonin and prostaglandin E2 which mediate the progression of inflammation. The anti-inflammatory and antihistaminic activities of HFE may be relevant in the context of the management of COVID-19.
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Endothelial glycocalyx degradation during sepsis: Causes and consequences. Matrix Biol Plus 2021; 12:100094. [PMID: 34917925 PMCID: PMC8668992 DOI: 10.1016/j.mbplus.2021.100094] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/21/2021] [Accepted: 11/23/2021] [Indexed: 12/23/2022] Open
Abstract
The endothelial glycocalyx is a ubiquitous intravascular structure essential for vascular homeostasis. During sepsis, the glycocalyx is degraded via the collective action of a variety of redundant sheddases, the regulation of which remains the focus of active investigation. Septic loss of the glycocalyx imparts both local vascular injury (leading to acute respiratory distress syndrome and acute kidney injury) as well as the systemic consequences of circulating glycosaminoglycan fragments (leading to cognitive dysfunction). Glycocalyx degradation during sepsis is potentially shaped by clinically-modifiable factors, suggesting opportunities for therapeutic intervention to mitigate the end-organ consequences of sepsis.
The glycocalyx is a ubiquitous structure found on endothelial cells that extends into the vascular lumen. It is enriched in proteoglycans, which are proteins attached to the glycosaminoglycans heparan sulfate, chondroitin sulfate, dermatan sulfate, keratan sulfate, and hyaluronic acid. In health and disease, the endothelial glycocalyx is a central regulator of vascular permeability, inflammation, coagulation, and circulatory tonicity. During sepsis, a life-threatening syndrome seen commonly in hospitalized patients, the endothelial glycocalyx is degraded, significantly contributing to its many clinical manifestations. In this review we discuss the intrinsically linked mechanisms responsible for septic endothelial glycocalyx destruction: glycosaminoglycan degradation and proteoglycan cleavage. We then examine the consequences of local endothelial glycocalyx loss to several organ systems and the systemic consequences of shed glycocalyx constituents. Last, we explore clinically relevant non-modifiable and modifiable factors that exacerbate or protect against endothelial glycocalyx shedding during sepsis.
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Key Words
- ADAM, A Disintegrin and Metalloproteinase
- ANP, Atrial Natriuretic Peptide
- ARDS, Acute respiratory distress syndrome
- Ang2, Angiopoietin-2
- DAMP, Damage-associated Molecular Pattern
- Endothelial glycocalyx
- FFP, Fresh Frozen Plasma
- GAG, Glycosaminoglycan
- Glycosaminoglycans
- HPSE-1/2, Heparanase-1/2
- LPS, Lipopolysaccharide
- MMP, Matrix Metalloproteinase
- PG, Proteoglycan
- Proteoglycans
- Sepsis
- TIMP, Tissue inhibitors of matrix metalloproteinase
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Ferreira JA, Kantorski KZ, Dubey N, Daghrery A, Fenno JC, Mishina Y, Chan HL, Mendonça G, Bottino MC. Personalized and Defect-Specific Antibiotic-Laden Scaffolds for Periodontal Infection Ablation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:49642-49657. [PMID: 34637255 DOI: 10.1021/acsami.1c11787] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Periodontitis compromises the integrity and function of tooth-supporting structures. Although therapeutic approaches have been offered, predictable regeneration of periodontal tissues remains intangible, particularly in anatomically complex defects. In this work, personalized and defect-specific antibiotic-laden polymeric scaffolds containing metronidazole (MET), tetracycline (TCH), or their combination (MET/TCH) were created via electrospinning. An initial screening of the synthesized fibers comprising chemo-morphological analyses, cytocompatibility assessment, and antimicrobial validation against periodontopathogens was accomplished to determine the cell-friendly and anti-infective nature of the scaffolds. According to the cytocompatibility and antimicrobial data, the 1:3 MET/TCH formulation was used to obtain three-dimensional defect-specific scaffolds to treat periodontally compromised three-wall osseous defects in rats. Inflammatory cell response and new bone formation were assessed by histology. Micro-computerized tomography was performed to assess bone loss in the furcation area at 2 and 6 weeks post implantation. Chemo-morphological and cell compatibility analyses confirmed the synthesis of cytocompatible antibiotic-laden fibers with antimicrobial action. Importantly, the 1:3 MET/TCH defect-specific scaffolds led to increased new bone formation, lower bone loss, and reduced inflammatory response when compared to antibiotic-free scaffolds. Altogether, our results suggest that the fabrication of defect-specific antibiotic-laden scaffolds holds great potential toward the development of personalized (i.e., patient-specific medication) scaffolds to ablate infection while affording regenerative properties.
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Affiliation(s)
- Jessica A Ferreira
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Karla Z Kantorski
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
- Post-Graduate Program in Oral Sciences (Periodontology Unit), School of Dentistry, Federal University of Santa Maria (UFSM), Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Nileshkumar Dubey
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Arwa Daghrery
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - J Christopher Fenno
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Yuji Mishina
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Hsun-Liang Chan
- Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Gustavo Mendonça
- Department of Biologic and Materials Sciences & Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
| | - Marco C Bottino
- Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
- Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, Michigan 48109-1078, United States
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Balance of Drug Residence and Diffusion in Lacrimal Fluid Determine Ocular Bioavailability in In Situ Gels Incorporating Tranilast Nanoparticles. Pharmaceutics 2021; 13:pharmaceutics13091425. [PMID: 34575501 PMCID: PMC8466670 DOI: 10.3390/pharmaceutics13091425] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/03/2021] [Accepted: 09/07/2021] [Indexed: 11/16/2022] Open
Abstract
We previously designed ophthalmic formulations (nTRA) containing tranilast nanoparticles (Tra-NPs) with high uptake into ocular tissues. In this study, we used in situ gel (ISG) bases comprising combinations of pluronic F127 (F127) and methylcellulose (MC/F127), pluronic F68 (F68/F127), and Carbopol (Car/F127), and we developed in situ gels incorporating Tra-NPs (Tra-NP-incorporated ISNGs) such as nTRA-F127, nTRA-MC/F127, nTRA-F68/F127, and nTRA-Car/F127. Moreover, we demonstrated the therapeutic effect on conjunctival inflammation using lipopolysaccharide-induced rats. Each Tra-NP-incorporated ISNG was prepared by the bead mill method, the particle size was 40–190 nm, and the tranilast release and diffusion from formulation were nTRA > nTRA-F127 > nTRA-F68/F127 > nTRA-Car/F127 > nTRA-MC/F127. In the Tra-NP-incorporated ISNGs, the tranilast residence time in the lacrimal fluid, cornea, and conjunctiva was prolonged, although the Cmax was attenuated in comparison with nTRA. On the other hand, no significant difference in conjunctival inflammation between non- and nTRA-F127-instilled rats was found; however, the nTRA-F68/F127, nTRA-Car/F127, and nTRA-MC/F127 (combination-ISG) attenuated the vessel leakage, nitric oxide, and tumor necrosis factor-α expression. In particular, nTRA-F68/F127 was significant in preventing the conjunctival inflammation. In conclusion, we found that the combination-ISG base prolonged the residence time of Tra-NPs; however, Tra-NP release from the formulation was attenuated, and the Tmax was delayed longer than that in nTRA. The balance of drug residence and diffusion in lacrimal fluid may be important in providing high ocular bioavailability in formulations containing solid nanoparticles.
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Zhao Y, Bilal M, Qindeel M, Khan MI, Dhama K, Iqbal HMN. Nanotechnology-based immunotherapies to combat cancer metastasis. Mol Biol Rep 2021; 48:6563-6580. [PMID: 34424444 DOI: 10.1007/s11033-021-06660-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 08/16/2021] [Indexed: 02/05/2023]
Abstract
Emerging concepts in nanotechnology have gained particular attention for their clinical translation of immunotherapies of cancer, autoimmune and infectious diseases. Several nanoconstructs have been engineered with unique structural, physicochemical, and functional features as robust alternatives for conventional chemotherapies. Traditional cancer therapies like chemotherapy, radiotherapy, and ultimately surgery are the most widely practiced in biomedical settings. Biomaterials and nanotechnology have introduced vehicles for drug delivery and have revolutionized the concept of the modern immunotherapeutic paradigm. Various types of nanomaterials, such as nanoparticles and, more specifically, drug-loaded nanoparticles are becoming famous for drug delivery applications because of safety, patient compliance, and smart action. Such therapeutic modalities have acknowledged regulatory endorsement and are being used in twenty-first-century clinical settings. Considering the emerging concepts and landscaping potentialities, herein, we spotlight and discuss nanoparticle-based immunotherapies as a smart and sophisticated drug delivery approach to combat cancer metastasis. The introductory part of this manuscript discusses a broad overview of cancer immunotherapy to understand better the tumor microenvironment and nanotechnology-oriented immunomodulatory strategies to cope with advanced-stage cancers. Following that, most addressable problems allied with conventional immunotherapies are given in comparison to nanoparticle-based immunotherapies. The later half of this work comprehensively highlights the requisite delivery of various bioactive entities with particular cases and examples. Finally, this review also encompasses a comprehensive concluding overview and future standpoints to strengthen a successful clinical translation of nanoparticle-based immunotherapies as a smart and sophisticated drug delivery approach.
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Affiliation(s)
- Yuping Zhao
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China.
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
| | - Maimoona Qindeel
- Department of Pharmacy, Quaid-i-Azam University, Islamabad, 45320, Pakistan
- Hamdard Institute of Pharmaceutical Sciences, Hamdard University Islamabad Campus, Islamabad, Pakistan
| | - Muhammad Imran Khan
- Hefei National Lab for Physical Sciences at the Microscale and the Centers for Biomedical Engineering, University of Science and Technology of China, Hefei, 230027, Anhui, China
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, Uttar Pradesh, 243 122, India
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, 64849, Monterrey, Mexico.
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Patel A, Khande H, Periasamy H, Mokale S. Immunomodulatory Effect of Doxycycline Ameliorates Systemic and Pulmonary Inflammation in a Murine Polymicrobial Sepsis Model. Inflammation 2021; 43:1035-1043. [PMID: 31955291 PMCID: PMC7224120 DOI: 10.1007/s10753-020-01188-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Acute lung injury is an inflammatory condition developed after severe sepsis in response to excessive secretion of pro-inflammatory cytokines. Doxycycline is widely reported to possess immunomodulatory activity through inhibition of various inflammatory pathways. Considering the broad spectrum of anti-inflammatory activity, protective effect of doxycycline was evaluated in clinically relevant murine polymicrobial sepsis model induced by caecal ligation and puncture (CLP). In this model, sepsis is accompanied with infection and therefore ceftriaxone at sub-protective dose was combined to retard the bacterial growth. Three hours after CLP challenge, mice were administered vehicle, ceftriaxone (100 mg/kg subcutaneously) alone and in combination with immunomodulatory dose of doxycycline (50 mg/kg, intraperitoneal) and survival were monitored for 5 days. Bacterial count in blood and peritoneal fluid along with cytokines [interleukin (IL)-6, IL-1β, tumour necrosis factor (TNF)-α] and myeloperoxidase (MPO) in plasma and lung homogenate were measured at 18 h post-CLP. Plasma glutathione (GSH) was also determined. Doxycycline in presence of ceftriaxone improved survival of septic mice by significantly reducing the plasma and lung pro-inflammatory cytokines and MPO levels. It also increased plasma GSH levels. Doxycycline did not improve antibacterial effect of ceftriaxone in combination, suggesting that the protective effect of doxycycline was due to its immunomodulatory activity. Doxycycline in the presence of ceftriaxone demonstrated improved survival of septic mice by modulating the immune response.
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Affiliation(s)
- Anasuya Patel
- Y.B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Marg, Aurangabad, Maharashtra, India
- Wockhardt Research Centre, Aurangabad, Maharashtra, India
| | - Hemant Khande
- Wockhardt Research Centre, Aurangabad, Maharashtra, India
| | | | - Santosh Mokale
- Y.B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Marg, Aurangabad, Maharashtra, India.
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13
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Affiliation(s)
- M.T. Labro
- INSERM U294, Service d'Hématologie et d'immunologie Biologiques, CHU Xavier BICHAT, 46 rue Henri Huchard, 75018 Paris, France. Tel. ; Fax
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Arora K, Green M, Prakash S. The Microbiome and Alzheimer's Disease: Potential and Limitations of Prebiotic, Synbiotic, and Probiotic Formulations. Front Bioeng Biotechnol 2020; 8:537847. [PMID: 33384986 PMCID: PMC7771210 DOI: 10.3389/fbioe.2020.537847] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 11/17/2020] [Indexed: 12/20/2022] Open
Abstract
The Microbiome has generated significant attention for its impacts not only on gastrointestinal health, but also on signaling pathways of the enteric and central nervous system via the microbiome gut-brain axis. In light of this, microbiome modulation may be an effective therapeutic strategy for treating or mitigating many somatic and neural pathologies, including neurodegenerative disorders. Alzheimer's disease (AD) is a chronic neurodegenerative disease that interferes with cerebral function by progressively impairing memory, thinking and learning through the continuous depletion of neurons. Although its etiopathogenesis remains uncertain, recent literature endorses the hypothesis that probiotic, prebiotic and synbiotic supplementation alters AD-like symptoms and improves many of its associated disease biomarkers. Alternatively, a dysfunctional microbiota impairs the gut epithelial barrier by inducing chronic gastric inflammation, culminating in neuroinflammation and accelerating AD progression. The findings in this review suggest that probiotics, prebiotics or synbiotics have potential as novel biological prophylactics in treatment of AD, due to their anti-inflammatory and antioxidant properties, their ability to improve cognition and metabolic activity, as well as their capacity of producing essential metabolites for gut and brain barrier permeability.
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Affiliation(s)
- Karan Arora
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, QC, Canada
- Department of Bioengineering, Faculty of Engineering, McGill University, Montreal, QC, Canada
- Biena Inc., Saint-Hyacinthe, QC, Canada
| | - Miranda Green
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Satya Prakash
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, QC, Canada
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Nagai N, Minami M, Deguchi S, Otake H, Sasaki H, Yamamoto N. An in situ Gelling System Based on Methylcellulose and Tranilast Solid Nanoparticles Enhances Ocular Residence Time and Drug Absorption Into the Cornea and Conjunctiva. Front Bioeng Biotechnol 2020; 8:764. [PMID: 32733870 PMCID: PMC7358604 DOI: 10.3389/fbioe.2020.00764] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 06/16/2020] [Indexed: 01/30/2023] Open
Abstract
We previously developed ophthalmic formulations containing tranilast nanopartaicles (ophthalmic TL-NPs formulations), and found them to show high uptake into ocular tissues. In this study, we aimed to design an in situ gel incorporating TL-NPs with 0.5–3% methylcellulose (MC, type SM-4) to ensure long residence time of the drug at the ocular surface. The ophthalmic TL-NPs formulations were prepared by the bead mill method, which yielded a mean particle size of ~93 nm with or without MC (0.5–3%). Although the dispersibility of TL particles in ophthalmic formulations increased with the MC content, the diffusion behavior of TL particles in the dispersion medium decreased with MC content. In an in vivo study using rats, the TL content in the lacrimal fluid was enhanced with MC content in the ophthalmic TL-NPs formulations, and the optimum amount of MC (0.5–1.5%) enhanced the TL content in the cornea and conjunctiva, and an anti-inflammatory effect of TL in rats instilled with ophthalmic TL-NPs formulations was observed. On the other hand, excessive MC (3%) prevented the corneal uptake of TL-NPs after instillation, and the anti-inflammation effect of TL was lower than that of ophthalmic TL-NPs formulations with optimum MC (0.5–1.5%). In conclusion, we found that gel formulations of TL-NPs with 0.5 and 1.5% MC provided a prolonged pre-corneal and pre-conjunctival contact time of TL, and resulted in higher TL contents in the cornea and conjunctiva following instillation in comparison with TL-NPs with or without 3% MC. This is probably due to the balance between the higher residence time and faster diffusion of TL-NPs on the ocular surface. These findings provide significant information that can be used to design further studies aimed at developing ophthalmic nanomedicines.
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Affiliation(s)
- Noriaki Nagai
- Faculty of Pharmacy, Kindai University, Osaka, Japan
| | - Misa Minami
- Faculty of Pharmacy, Kindai University, Osaka, Japan
| | - Saori Deguchi
- Faculty of Pharmacy, Kindai University, Osaka, Japan
| | - Hiroko Otake
- Faculty of Pharmacy, Kindai University, Osaka, Japan
| | - Hiroshi Sasaki
- Department of Ophthalmology, School of Medicine, Kanazawa Medical University, Ishikawa, Japan
| | - Naoki Yamamoto
- Department of Ophthalmology, School of Medicine, Kanazawa Medical University, Ishikawa, Japan
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Nuti E, Rossello A, Cuffaro D, Camodeca C, Van Bael J, van der Maat D, Martens E, Fiten P, Pereira RVS, Ugarte-Berzal E, Gouwy M, Opdenakker G, Vandooren J. Bivalent Inhibitor with Selectivity for Trimeric MMP-9 Amplifies Neutrophil Chemotaxis and Enables Functional Studies on MMP-9 Proteoforms. Cells 2020; 9:cells9071634. [PMID: 32645949 PMCID: PMC7408547 DOI: 10.3390/cells9071634] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 06/30/2020] [Accepted: 07/02/2020] [Indexed: 12/12/2022] Open
Abstract
A fundamental part of the immune response to infection or injury is leukocyte migration. Matrix metalloproteinases (MMPs) are a class of secreted or cell-bound endopeptidases, implicated in every step of the process of inflammatory cell migration. Hence, specific inhibition of MMPs is an interesting approach to control inflammation. We evaluated the potential of a bivalent carboxylate inhibitor to selectively inhibit the trimeric proteoform of MMP-9 and compared this with a corresponding monovalent inhibitor. The bivalent inhibitor efficiently inhibited trimeric MMP-9 (IC50 = 0.1 nM), with at least 500-fold selectivity for MMP-9 trimers over monomers. Surprisingly, in a mouse model for chemotaxis, the bivalent inhibitor amplified leukocyte influxes towards lipopolysaccharide-induced inflammation. We verified by microscopic and flow cytometry analysis increased amounts of neutrophils. In a mouse model for endotoxin shock, mice treated with the bivalent inhibitor had significantly increased levels of MMP-9 in plasma and lungs, indicative for increased inflammation. In conclusion, we propose a new role for MMP-9 trimers in tempering excessive neutrophil migration. In addition, we have identified a small molecule inhibitor with a high selectivity for the trimeric proteoform of MMP-9, which will allow further research on the functions of MMP-9 proteoforms.
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Affiliation(s)
- Elisa Nuti
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy; (E.N.); (A.R.); (D.C.); (C.C.)
| | - Armando Rossello
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy; (E.N.); (A.R.); (D.C.); (C.C.)
| | - Doretta Cuffaro
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy; (E.N.); (A.R.); (D.C.); (C.C.)
| | - Caterina Camodeca
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy; (E.N.); (A.R.); (D.C.); (C.C.)
| | - Jens Van Bael
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, KU Leuven, Herestraat 49-bus 1044, B-3000 Leuven, Belgium; (J.V.B.); (D.v.d.M.); (E.M.); (P.F.); (R.V.S.P.); (E.U.-B.); (G.O.)
| | - Dries van der Maat
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, KU Leuven, Herestraat 49-bus 1044, B-3000 Leuven, Belgium; (J.V.B.); (D.v.d.M.); (E.M.); (P.F.); (R.V.S.P.); (E.U.-B.); (G.O.)
| | - Erik Martens
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, KU Leuven, Herestraat 49-bus 1044, B-3000 Leuven, Belgium; (J.V.B.); (D.v.d.M.); (E.M.); (P.F.); (R.V.S.P.); (E.U.-B.); (G.O.)
| | - Pierre Fiten
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, KU Leuven, Herestraat 49-bus 1044, B-3000 Leuven, Belgium; (J.V.B.); (D.v.d.M.); (E.M.); (P.F.); (R.V.S.P.); (E.U.-B.); (G.O.)
| | - Rafaela Vaz Sousa Pereira
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, KU Leuven, Herestraat 49-bus 1044, B-3000 Leuven, Belgium; (J.V.B.); (D.v.d.M.); (E.M.); (P.F.); (R.V.S.P.); (E.U.-B.); (G.O.)
| | - Estefania Ugarte-Berzal
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, KU Leuven, Herestraat 49-bus 1044, B-3000 Leuven, Belgium; (J.V.B.); (D.v.d.M.); (E.M.); (P.F.); (R.V.S.P.); (E.U.-B.); (G.O.)
| | - Mieke Gouwy
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, KU Leuven, Herestraat 49-bus 1044, B-3000 Leuven, Belgium;
| | - Ghislain Opdenakker
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, KU Leuven, Herestraat 49-bus 1044, B-3000 Leuven, Belgium; (J.V.B.); (D.v.d.M.); (E.M.); (P.F.); (R.V.S.P.); (E.U.-B.); (G.O.)
| | - Jennifer Vandooren
- Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, University of Leuven, KU Leuven, Herestraat 49-bus 1044, B-3000 Leuven, Belgium; (J.V.B.); (D.v.d.M.); (E.M.); (P.F.); (R.V.S.P.); (E.U.-B.); (G.O.)
- Correspondence: ; Tel.: +32-16-32-22-95
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17
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Wang KC, Huang CH, Chang PR, Huang MT, Fang SB. Role of wzxE in Salmonella Typhimurium lipopolysaccharide biosynthesis and interleukin-8 secretion regulation in human intestinal epithelial cells. Microbiol Res 2020; 238:126502. [PMID: 32535400 DOI: 10.1016/j.micres.2020.126502] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 04/15/2020] [Accepted: 04/23/2020] [Indexed: 10/24/2022]
Abstract
In Salmonella Typhimurium (S. Typhimurium), lipopolysaccharide (LPS) anchored on the bacterial outer membrane is a major immune stimulus that can broadly activate immune cells and induce innate immune responses. wzxE is involved in bacterial LPS biosynthesis but has rarely been reported in Salmonella; wzxE encodes a flipase that can flip the precursor of LPS across the membrane into the periplasm space. Our preliminary data showed that the wzxE transposon mutant of S. Typhimurium could not significantly adhere to and invade into HEp-2 cells, but the mechanism remains unknown. In this study, we infected human LS174T, Caco-2, HeLa, and THP-1 cells with the wild-type S. Typhimurium strain SL1344, its wzxE mutant, and its complemented strain. wzxE depletion significantly attenuated bacterial adhesion and internalization in the four cell types. In addition, the postinfectious production of interleukin-8 (IL-8) was significantly decreased in the Caco-2 cells infected with the wzxE mutant. Bacterial LPS stained with polymyxin B probe also exhibited a reduced signal in the wzxE mutant. The silver staining of purified LPS demonstrated a significant reduction of the O-antigen (OAg) chain in the wzxE mutant. To confirm the role of OAg in the wzxE mutant during infection, we treated the HT-29 cells with the S. Typhimurium strain SL1344, its wzxE mutant, and their purified LPS, which revealed significantly decreased IL-8 secretion in the HT-29 cells treated with purified LPS from the wzxE mutant and with the wzxE mutant. In conclusion, wzxE mediates LPS biosynthesis and plays a major role in bacterial pathogenesis by regulating OAg flipping.
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Affiliation(s)
- Ke-Chuan Wang
- Division of Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan; Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
| | - Chih-Hung Huang
- Graduate Institute of Biochemical and Biomedical Engineering, National Taipei University of Technology, Taipei, Taiwan.
| | - Pei-Ru Chang
- Division of Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan; Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
| | - Ming-Te Huang
- Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan; Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
| | - Shiuh-Bin Fang
- Division of Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan; Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Master Program for Clinical Pharmacogenomics and Pharmacoproteomics, College of Pharmacy, Taipei Medical University, Taipei, Taiwan.
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Abstract
Sepsis, a life threating syndrome characterized by organ failure after infection, is the most common cause of death in hospitalized patients. The treatment of sepsis is generally supportive in nature, involving the administration of intravenous fluids, vasoactive substances and oxygen plus antibiotics to eliminate the pathogen. No drugs have been approved specifically for the treatment of sepsis, and clinical trials of potential therapies have failed to reduce mortality - suggesting that new approaches are needed. Abnormalities in the immune response elicited by the pathogen, ranging from excessive inflammation to immunosuppression, contribute to disease pathogenesis. Although hundreds of immunomodulatory agents are potentially available, it remains unclear which patient benefits from which immune therapy at a given time point. Results indicate the importance of personalized therapy, specifically the need to identify the type of intervention required by each individual patient at a given point in the disease process. To address this issue will require using biomarkers to stratify patients based on their individual immune status. This article reviews recent and ongoing clinical investigations using immunostimulatory or immunosuppressive therapies against sepsis including non-pharmacological and novel preclinical approaches.
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Sattar AA, Abate W, Fejer G, Bradley G, Jackson SK. Evaluation of the proinflammatory effects of contaminated bathing water. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2019; 82:1076-1087. [PMID: 31797748 DOI: 10.1080/15287394.2019.1694113] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Contaminated marine bathing water has been reported to adversely affect human health. Our data demonstrated a correlation between total endotoxin (lipopolysaccharide; LPS) levels and degree of contamination of marine bathing waters. To assess the potential health implications of LPS present in marine bathing waters, the inflammation-inducing potency of water samples collected at different time points at multiple sampling sites were assessed using a cell culture-based assay. The numbers of fecal indicator bacteria (FIB) were also examined in the same samples. Water samples were used to stimulate two cell culture models: (1) a novel non-transformed continuously growing murine cell line Max Plank Institute (MPI) characteristic of alveolar macrophages and (2) human MonoMac 6 monocyte cell line. The inflammatory potential of the samples was assessed by measuring the release of inflammatory cytokines. The presence of high levels of LPS in contaminated bathing water led to induction of inflammatory response from our in vitro cell-based bioassays suggesting its potential health impact. This finding introduces an in vitro culture assay that reflects the level of LPS in water samples. These observations further promote previous finding that LPS is a reliable surrogate biomarker for fecal contamination of bathing water.
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Affiliation(s)
- Anas A Sattar
- School of Biomedical and Healthcare Science, Plymouth University, Plymouth, UK
| | - Wondwossen Abate
- School of Biomedical and Healthcare Science, Plymouth University, Plymouth, UK
| | - Gyorgy Fejer
- School of Biomedical and Healthcare Science, Plymouth University, Plymouth, UK
| | - Graham Bradley
- School of Biomedical and Healthcare Science, Plymouth University, Plymouth, UK
| | - Simon K Jackson
- School of Biomedical and Healthcare Science, Plymouth University, Plymouth, UK
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20
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Watts KM, Lahiri P, Arrazuria R, De Buck J, Knight CG, Orsel K, Barkema HW, Cobo ER. Oxytetracycline reduces inflammation and treponeme burden whereas vitamin D 3 promotes β-defensin expression in bovine infectious digital dermatitis. Cell Tissue Res 2019; 379:337-348. [PMID: 31410630 DOI: 10.1007/s00441-019-03082-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 07/25/2019] [Indexed: 12/13/2022]
Abstract
Digital dermatitis (DD), a common ulcerative disease of the bovine foot causing lameness and reducing productivity and animal welfare, is associated with infection by spirochete Treponema bacteria. Topical tetracycline, the most common treatment, has inconsistent cure rates; therefore, new therapeutic options are needed. We compared effects of topical oxytetracycline and vitamin D3 on innate immunity in DD-affected skin. Cows with active DD lesions were treated topically with oxytetracycline or vitamin D3 and skin biopsies were collected from lesions. Tissue samples were examined histologically, transcriptional expression of pro-inflammatory cytokines, Toll-like receptors (TLRs), and host defense peptides assessed, and the presence of specific treponeme species determined. Effects of treatments at a mechanistic level were studied in a human keratinocyte model of treponeme infection. Oxytetracycline promoted hyperplastic scab formation in ulcerated DD lesions and decreased transcriptional expression of Cxcl-8 (neutrophil chemoattractant). Oxytetracycline also reduced numbers of Treponema phagedenis and T. pedis and enhanced Tlr2 mRNA expression. Vitamin D3 did not modify expression of cytokines or Tlrs, or bacterial loads, but enhanced transcription of tracheal antimicrobial peptide (Tap), a key bovine β-defensin. Combing oxytetracycline and vitamin D3 provides complementary clinical benefits in controlling DD through a combination of antimicrobial, immunomodulatory, and pro-healing activities.
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Affiliation(s)
- Kaitlyn M Watts
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, HSC 2519, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada
| | - Priyoshi Lahiri
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, HSC 2519, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada
| | - Rakel Arrazuria
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, HSC 2519, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada
| | - Jeroen De Buck
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, HSC 2519, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada
| | - Cameron G Knight
- Department of Veterinary Clinical and Diagnostic Science, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Karin Orsel
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, HSC 2519, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada
| | - Herman W Barkema
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, HSC 2519, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada
| | - Eduardo R Cobo
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, HSC 2519, 3330 Hospital Drive NW, Calgary, AB, T2N 4N1, Canada.
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Hermsmeier M, Sawant T, Chowdhury K, Nagavarapu U, Chan KF. First Use of Optical Coherence Tomography on In Vivo Inflammatory Acne-Like Lesions: A Murine Model. Lasers Surg Med 2019; 52:207-217. [PMID: 31347184 DOI: 10.1002/lsm.23140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2019] [Indexed: 01/19/2023]
Abstract
BACKGROUND AND OBJECTIVES Successful outcomes of clinical studies for acne vulgaris depend greatly on achieving statistically significant reduction in acne lesion count and improvement in Investigator's Global Assessment score of the investigational drug product against its vehicle control. To date, there has not been a validated preclinical acne model to evaluate investigational drug products in order to improve the probability of clinical success. An inflammatory acne-like lesion mouse model developed in-house has previously been used for clinical guidance in our drug development program. In this study, we aim to implement and assess the adequacy of swept-source optical coherence tomography (SS-OCT) in quantifying the dynamic changes in inflammatory acne-like lesions. STUDY DESIGN/MATERIALS AND METHODS Live Propionibacterium acnes bacteria were injected intradermally resulting in inflammatory acne-like lesions. Topical 1% and 2% minocycline gels were applied to the lesions in separate groups once daily for 2 weeks and compared with vehicle and untreated control groups. The growth of these lesions was monitored and measured with a ruler (height)/microcaliper (width)-an approach previously developed, and with SS-OCT. The reliability of the two methods were assessed. Acquired OCT images across the apex of these inflammatory lesions were statistically analyzed for lesion volume reduction from baseline as well as between the treatment groups and the control groups. RESULTS The OCT technique allowed for reliable lesion volume analysis with varying conic profiles. After 14 days of topical minocycline treatments (1%, 2% minocycline), statistically significant reduction in lesion volume (P ≤ 0.05) based on OCT image analysis was observed compared with untreated and vehicle control groups as well as compared with baseline measurements. Under the right conditions, some morphological aspects of the P. acnes injection site were discernible within the skin in images captured with OCT. CONCLUSIONS We demonstrated the first use of SS-OCT in evaluating in vivo inflammatory acne-like lesions in a murine model. Our findings support the use of OCT in assessing lesion size and evolution of P. acnes injection sites non-invasively in preclinical in vivo studies, which could potentially lead to more consistent and predictable outcomes in clinical development. Lasers Surg. Med. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Maiko Hermsmeier
- Research and Development, BioPharmX, Inc., 115 Nicholson Lane, San Jose, California, 95134
| | - Tanvee Sawant
- Research and Development, BioPharmX, Inc., 115 Nicholson Lane, San Jose, California, 95134
| | - Khadiza Chowdhury
- Research and Development, BioPharmX, Inc., 115 Nicholson Lane, San Jose, California, 95134
| | - Usha Nagavarapu
- Research and Development, BioPharmX, Inc., 115 Nicholson Lane, San Jose, California, 95134
| | - Kin F Chan
- Research and Development, BioPharmX, Inc., 115 Nicholson Lane, San Jose, California, 95134
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22
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Ghiasian L, Habibi A, Aliakbar Navahi R, Hadavandkhani A, Akbarian S, Alemzadeh SA, Khorasani MA. Safety of the subconjunctival injection of doxycycline in rabbits. Cutan Ocul Toxicol 2019; 38:390-394. [PMID: 31311337 DOI: 10.1080/15569527.2019.1641112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Purpose: To evaluate the safety of subconjunctival injection of doxycycline in rabbit eyes. Methods: Eight white New Zealand rabbits were selected. Different concentrations of 250 micrograms (μg), 500 μg, 1000 μg, and 2000 μg in 0.1 ml were prepared for subconjunctival injection. Each concentration was injected into the two eyes of each rabbit. For each dose, dextrose was injected in one contralateral eye and the other fellow eye remained non-injected. All rabbits underwent ocular examination in the 1st, 3rd, and 30th day after injection. The rabbits were sacrificed 30 days after injections and the histopathological examination was performed. Results: No obvious change was detected in all four groups from the 1st day to the 3rd day after injection in terms of tearing, hyperaemia, and chemosis. There was no visible sign of inflammation or necrosis, and also no histological change in both clinical and histopathological examinations. Conclusion: Subconjunctival injection of doxycycline with different dosages of 250 to 2000 ug in 0.1cc in rabbit eyes was safe and no clinical or histological changes were observed after one month.
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Affiliation(s)
- Leila Ghiasian
- Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences , Tehran , Iran
| | - Abbas Habibi
- Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences , Tehran , Iran
| | - Roshanak Aliakbar Navahi
- Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences , Tehran , Iran
| | - Ali Hadavandkhani
- Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences , Tehran , Iran
| | - Shadi Akbarian
- Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences , Tehran , Iran
| | | | - Maryam Ashraf Khorasani
- Eye Research Center, Rassoul Akram Hospital, Iran University of Medical Sciences , Tehran , Iran
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23
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Leelarungrayub J, Manorsoi J, Manorsoi A. Anti-inflammatory activity of niosomes entrapped with Plai oil ( Zingiber cassumunar Roxb.) by therapeutic ultrasound in a rat model. Int J Nanomedicine 2017; 12:2469-2476. [PMID: 28408818 PMCID: PMC5383072 DOI: 10.2147/ijn.s129131] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the antioxidant and anti-inflammatory activities of Plai oil-encapsulated niosomes (Zingiber cassumunar Roxb.) on inflamed subcutaneous Wistar rat skin by therapeutic ultrasound. METHODS Pure oil from Plai rhizomes was extracted by steam distillation, and antioxidant activities were determined by 2,2-diphenyl-1-picrylhydrazyl radical scavenging assay. Bioactive compounds were analyzed by gas chromatography-mass spectrometry. Niosome particles containing Plai oil were prepared by chloroform film method with sonication before testing for anti-inflammatory activity on locally inflamed subcutaneous rat skin after inducement from lipopolysaccharide with ultrasound once a day for 3 days. Skin temperatures and blood flow were evaluated. RESULTS Plai oil presented antioxidant activity that inhibited 2,2-diphenyl-1-picrylhydrazyl radicals. Four active compounds found in the essential oil were sabinene, γ-terpinene, terpinene-4-ol, and (E)-1-(3,4-dimethyoxy phenyl) butadiene. Application of ultrasound (0.2 W/cm2, 20%, 3 min) with gel containing Plai oil-encapsulated niosomes decreased skin temperature and blood flow to the lowest level compared to the application of neurofen drug or gel-based control. CONCLUSION Plai oil, which consists of four main bioactive compounds and possesses antioxidant and anti-inflammatory activities, can be applied against local subcutaneous inflammation when used with therapeutic ultrasound via entrapped niosomes.
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Affiliation(s)
- Jirakrit Leelarungrayub
- Department of Physical Therapy, Faculty of Associated Medical Sciences, Chiang Mai University
| | - Jiradej Manorsoi
- Manose Health and Beauty Research Center, Mueng
- Division of Cosmetic Technology, Faculty of Science and Technology, North Chiang Mai University, Chiang Mai, Thailand
| | - Aranya Manorsoi
- Manose Health and Beauty Research Center, Mueng
- Division of Cosmetic Technology, Faculty of Science and Technology, North Chiang Mai University, Chiang Mai, Thailand
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24
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Qiu H, Min Y, Rodgers Z, Zhang L, Wang AZ. Nanomedicine approaches to improve cancer immunotherapy. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2017; 9. [PMID: 28296286 DOI: 10.1002/wnan.1456] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 10/28/2016] [Accepted: 12/17/2016] [Indexed: 01/10/2023]
Abstract
Significant advances have been made in the field of cancer immunotherapy by orchestrating the body's immune system to eradicate cancer cells. However, safety and efficacy concerns stemming from the systemic delivery of immunomodulatory compounds limits cancer immunotherapies expansion and application. In this context, nanotechnology presents a number of advantages, such as targeted delivery to immune cells, enhanced clinical outcomes, and reduced adverse events, which may aid in the delivery of cancer vaccines and immunomodulatory agents. With this in mind, a diverse range of nanomaterials with different physicochemical characteristics have been developed to stimulate the immune system and battle cancer. In this review, we will focus on some recent developments and the potential advantages of utilizing nanotechnology within the field of cancer immunotherapy. WIREs Nanomed Nanobiotechnol 2017, 9:e1456. doi: 10.1002/wnan.1456 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Hui Qiu
- Laboratory of Nano- and Translational Medicine, Lineberger Comprehensive Cancer Center, Carolina Center for Cancer Nanotechnology Excellence, Carolina Institute of Nanomedicine; Department of Radiation Oncology, University of North Carolina, Chapel Hill, NC, USA.,Department of Radiation Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yuanzeng Min
- Laboratory of Nano- and Translational Medicine, Lineberger Comprehensive Cancer Center, Carolina Center for Cancer Nanotechnology Excellence, Carolina Institute of Nanomedicine; Department of Radiation Oncology, University of North Carolina, Chapel Hill, NC, USA
| | - Zach Rodgers
- Laboratory of Nano- and Translational Medicine, Lineberger Comprehensive Cancer Center, Carolina Center for Cancer Nanotechnology Excellence, Carolina Institute of Nanomedicine; Department of Radiation Oncology, University of North Carolina, Chapel Hill, NC, USA
| | - Longzhen Zhang
- Department of Radiation Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, China
| | - Andrew Z Wang
- Laboratory of Nano- and Translational Medicine, Lineberger Comprehensive Cancer Center, Carolina Center for Cancer Nanotechnology Excellence, Carolina Institute of Nanomedicine; Department of Radiation Oncology, University of North Carolina, Chapel Hill, NC, USA.,Department of Radiation Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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25
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Shapira L, Soskolne A, Halabi A, Barak V, Stabholz A. Induction of tumor necrosis factor α and interleukin-1β in subcutaneously implanted chamber by lipopolysaccharide. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/096805199700400503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Lipopolysaccharide (LPS) is the major component of the outermost membrane of Gram-negative bacteria and is considered to be one of the major virulence factors of these bacteria. While the effect of systemic injection of LPS is well characterized, the characterization of cytokine secretion in response to local injection of LPS is lacking. The present study was designed to determine the local production of tumor necrosis factor α (TNFα) and interleukin-1β (IL-1β) over a 4 day period following injection of LPS into subcutaneous implanted chambers in mice. Mice were challenged by a single or repeated injection of Salmonella typhosa LPS into the chambers. Chamber fluids were aspirated at different time intervals and were used for assessment of leukocyte and cytokine levels. A single injection of LPS was found to induce cell influx into the chamber which peaked after 4 h. TNFα and IL-1β levels increased rapidly, reaching their maximum levels within 4 h. After 24 h, TNFα levels declined markedly and were undetectable at 48 and 96 h. TNFα mRNA levels in the sedimented cells followed a similar pattern. In contrast, IL-1β showed a more gradual decrease with levels significantly different from baseline still being present 96 h post-LPS challenge. Four consecutive daily injections of LPS into the chambers resulted in undetectable levels of TNFα in the chamber fluid, while significant levels of IL-1β were detected. These levels were significantly higher than the levels of IL-1β in the chamber fluid 96 h after a single injection and approximately 60% of the levels measured 24 h after a single intra-chamber injection of LPS. The results emphasize the difference between single and repeated exposure to LPS in vivo, and suggest a role for TNFα in the initial phase of the local inflammatory response and for IL-1β in the later phase.
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Affiliation(s)
- L. Shapira
- Department of Periodontology, The Hebrew University - Hadassah Faculty of Dental Medicine, Jerusalem Israel,
| | - A. Soskolne
- Department of Periodontology, The Hebrew University - Hadassah Faculty of Dental Medicine, Jerusalem Israel
| | - A. Halabi
- Department of Periodontology, The Hebrew University - Hadassah Faculty of Dental Medicine, Jerusalem Israel
| | - V. Barak
- Department of Oncology, The Hebrew University - Hadassah Medical Center, Jerusalem Israel
| | - A. Stabholz
- Department of Public Health, The Hebrew University - Hadassah Faculty of Dental Medicine, Jerusalem Israel
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26
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Qiu Z, Zhang F, Gong C, Xu H, Hu J. Fusion Peptides CPU1 and CPU2 Inhibit Matrix Metalloproteinases and Protect Mice from Endotoxin Shock Within a Strict Time Window. Inflammation 2016; 38:2092-104. [PMID: 26111477 DOI: 10.1007/s10753-015-0192-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Endotoxin shock induction in mice is a commonly used animal model to evaluate the protective effect of biologically active reagents. After an lipopolysaccharides (LPS) stimulus, matrix metalloproteinase-8 (MMP-8) and matrix metalloproteinase-9 (MMP-9) are rapidly degranulated and released by neutrophils, aside other enzymes and effector molecules. MMPs cleave extracellular matrix components and cytokines, and such processes contribute to shock syndrome development. CPU1 and CPU2 are two peptide MMP inhibitors with different in vitro IC50 values to several key enzymes, including MMP-8 and MMP-9. In vivo work confirmed that CPU1 and CPU2 protected mice from endotoxin shock after intravenous and intraperitoneal injections. Furthermore, their minimal effective dose after an intravenous injection and the maximum time interval between intraperitoneal peptide injection (150 mg/kg) and intravenous LPS injection were determined. With the use of an indirect competitive ELISA, plasma CPU1 and CPU2 concentrations in different experimental settings were measured. In addition, the acuteness of MMP-9 release in the mouse circulation after an intravenous LPS injection was confirmed with the zymography technique. Our findings reinforce previous work with other inhibitors about a strict time window within which effective MMP inhibition is needed to obtain significant survival rate improvements and also show that, with strict pharmacokinetic monitoring, potent protease inhibitors may in the future become life-savers in shock conditions.
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Affiliation(s)
- Zheng Qiu
- State Key Laboratory of Natural Medicines, Ministry of Education, China Pharmaceutical University, Nanjing, 210009, Peoples Republic of China.
| | - Fengguo Zhang
- State Key Laboratory of Natural Medicines, Ministry of Education, China Pharmaceutical University, Nanjing, 210009, Peoples Republic of China.
| | - Chengxin Gong
- State Key Laboratory of Natural Medicines, Ministry of Education, China Pharmaceutical University, Nanjing, 210009, Peoples Republic of China. .,The Engineering Research Center of Peptide Drug Discovery and Development, China Pharmaceutical University, Nanjing, 210009, Peoples Republic of China.
| | - Hanmei Xu
- State Key Laboratory of Natural Medicines, Ministry of Education, China Pharmaceutical University, Nanjing, 210009, Peoples Republic of China. .,The Engineering Research Center of Peptide Drug Discovery and Development, China Pharmaceutical University, Nanjing, 210009, Peoples Republic of China.
| | - Jialiang Hu
- State Key Laboratory of Natural Medicines, Ministry of Education, China Pharmaceutical University, Nanjing, 210009, Peoples Republic of China. .,The Engineering Research Center of Peptide Drug Discovery and Development, China Pharmaceutical University, Nanjing, 210009, Peoples Republic of China.
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27
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Möller T, Bard F, Bhattacharya A, Biber K, Campbell B, Dale E, Eder C, Gan L, Garden GA, Hughes ZA, Pearse DD, Staal RGW, Sayed FA, Wes PD, Boddeke HWGM. Critical data-based re-evaluation of minocycline as a putative specific microglia inhibitor. Glia 2016; 64:1788-94. [PMID: 27246804 DOI: 10.1002/glia.23007] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Accepted: 05/04/2016] [Indexed: 12/11/2022]
Abstract
Minocycline, a second generation broad-spectrum antibiotic, has been frequently postulated to be a "microglia inhibitor." A considerable number of publications have used minocycline as a tool and concluded, after achieving a pharmacological effect, that the effect must be due to "inhibition" of microglia. It is, however, unclear how this "inhibition" is achieved at the molecular and cellular levels. Here, we weigh the evidence whether minocycline is indeed a bona fide microglia inhibitor and discuss how data generated with minocycline should be interpreted. GLIA 2016;64:1788-1794.
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Affiliation(s)
- Thomas Möller
- Neuroinflammation Disease Biology Unit, Lundbeck Research USA, Paramus, New Jersey.,Department of Neurology, University of Washington, Seattle, Washington
| | | | - Anindya Bhattacharya
- Janssen Research & Development, LLC., Neuroscience Drug Discovery, San Diego, California
| | - Knut Biber
- Department of Psychiatry and Psychotherapy, University Hospital Freiburg, Freiburg, Germany.,Department of Neuroscience, University Medical Center Groningen, Groningen, The Netherlands
| | - Brian Campbell
- Neuroinflammation Disease Biology Unit, Lundbeck Research USA, Paramus, New Jersey
| | - Elena Dale
- Neuroinflammation Disease Biology Unit, Lundbeck Research USA, Paramus, New Jersey
| | - Claudia Eder
- Institute for Infection and Immunity, St. George's - University of London, London, United Kingdom
| | - Li Gan
- Gladstone Institute for Neurodegeneration, San Francisco, California
| | - Gwenn A Garden
- Department of Neurology, University of Washington, Seattle, Washington
| | - Zoë A Hughes
- Neuroscience & Pain Research Unit, Pfizer Global Research, Cambridge, Massachusetts
| | - Damien D Pearse
- Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Roland G W Staal
- Neuroinflammation Disease Biology Unit, Lundbeck Research USA, Paramus, New Jersey
| | - Faten A Sayed
- Gladstone Institute for Neurodegeneration, San Francisco, California.,Neuroscience Graduate Program, University of California, San Francisco, San Francisco, California
| | - Paul D Wes
- Neuroinflammation Disease Biology Unit, Lundbeck Research USA, Paramus, New Jersey
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28
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Cheng Z, Li L. Ginsenoside Rg3 ameliorates lipopolysaccharide-induced acute lung injury in mice through inactivating the nuclear factor-κB (NF-κB) signaling pathway. Int Immunopharmacol 2016; 34:53-59. [DOI: 10.1016/j.intimp.2016.02.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 02/12/2016] [Accepted: 02/12/2016] [Indexed: 01/06/2023]
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29
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Yang J, Wang C, Nie X, Shi S, Xiao J, Ma X, Dong X, Zhang Y, Han J, Li T, Mao J, Liu X, Zhao J, Wu Q. Perfluorooctane sulfonate mediates microglial activation and secretion of TNF-α through Ca2+-dependent PKC-NF-кB signaling. Int Immunopharmacol 2015; 28:52-60. [DOI: 10.1016/j.intimp.2015.05.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 05/10/2015] [Accepted: 05/11/2015] [Indexed: 01/06/2023]
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30
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Harnessing the Microbiome to Enhance Cancer Immunotherapy. J Immunol Res 2015; 2015:368736. [PMID: 26101781 PMCID: PMC4458560 DOI: 10.1155/2015/368736] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 05/10/2015] [Indexed: 12/20/2022] Open
Abstract
The microbiota plays a key role in regulating the innate and adaptive immune system. Herein, we review the immunological aspects of the microbiota in tumor immunity in mice and man, with a focus on toll-like receptor (TLR) agonists, vaccines, checkpoint modulators, chemotherapy, and adoptive T cell transfer (ACT) therapies. We propose innovative treatments that may safely harness the microbiota to enhance T cell-based therapies in cancer patients. Finally, we highlight recent developments in tumor immunotherapy, particularly novel ways to modulate the microbiome and memory T cell responses to human malignancies.
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31
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Ahn S, Siddiqi MH, Noh HY, Kim YJ, Kim YJ, Jin CG, Yang DC. Anti-inflammatory activity of ginsenosides in LPS-stimulated RAW 264.7 cells. Sci Bull (Beijing) 2015. [DOI: 10.1007/s11434-015-0773-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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32
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Jeong DH, Kim KBWR, Kim MJ, Kang BK, Ahn DH. Anti-inflammatory activity of methanol extract and n-hexane fraction mojabanchromanol b from Myagropsis myagroides. Life Sci 2014; 114:12-9. [PMID: 25119102 DOI: 10.1016/j.lfs.2014.07.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 07/03/2014] [Accepted: 07/28/2014] [Indexed: 11/28/2022]
Abstract
AIMS This study was carried out to verify the anti-inflammatory effect of methanol extract from Myagropsis myagroides (MMME) and its n-hexane fraction mojabanchromanol b. MAIN METHODS The murine macrophages Raw264.7 cells were used. The pro-inflammatory cytokines (IL-6, IL-1β, TNF-α) and the expression of iNOS, COX-2, and NF-κB p65 were examined by ELISA and immunoblotting. To investigate the inhibitory effect of MMME in an animal model of inflammation, an assay to determine croton oil-induced ear edema in mice was performed. KEY FINDINGS NO levels decreased with increasing concentration of MMME, and were inhibited up to 50%. The secretion of IL-6, TNF-α, and IL-1β was suppressed in a dose-dependent manner, especially at 50μg/mL, inhibition activities of cytokines were over 50%. MMME also suppressed the expression of COX-2, iNOS, and NF-κB p65, suggesting that MMME could affect the expression of inflammation related cytokines and proteins through the deregulation of NF-κB. Moreover, the formation of mouse ear edema was reduced at the highest dose tested compared to that in the control, and generated similar effects compared with prednisolone at 250mg/kg in mice ear edema evaluation test. In addition, the results in photomicrograph of mice ear tissue and mast cells also showed the same effect. After purification of fractions of MMME, it indicated that n-hexane fraction mojabanchromanol b was the most active fraction showing the inhibitory effect of IL-6 and TNF-α. SIGNIFICANCE These results suggested that MMME and mojabanchromanol b may have great effects on inflammatory factors and be potential anti-inflammatory therapeutic materials.
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Affiliation(s)
- Da-Hyun Jeong
- Department of Food Science & Technology/Institute of Food Science, Pukyong National University, Busan 608-737, Republic of Korea
| | - Koth-Bong-Woo-Ri Kim
- Institute of Fisheries Sciences, Pukyong National University, Busan 619-911, Republic of Korea
| | - Min-Ji Kim
- Institute of Fisheries Sciences, Pukyong National University, Busan 619-911, Republic of Korea
| | - Bo-Kyeong Kang
- Department of Food Science & Technology/Institute of Food Science, Pukyong National University, Busan 608-737, Republic of Korea
| | - Dong-Hyun Ahn
- Department of Food Science & Technology/Institute of Food Science, Pukyong National University, Busan 608-737, Republic of Korea.
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Sasa quelpaertensis leaf extract suppresses dextran sulfate sodium-induced colitis in mice by inhibiting the proinflammatory mediators and mitogen-activated protein kinase phosphorylation. Nutr Res 2014; 34:894-905. [PMID: 25287291 DOI: 10.1016/j.nutres.2014.09.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 08/29/2014] [Accepted: 09/05/2014] [Indexed: 01/06/2023]
Abstract
Sasa quelpaertensis leaves exert anti-inflammatory and anticarcinogenic effects, although it remains unclear whether these leaves can suppress inflammation-related intestinal diseases. This study hypothesized that Sasa quelpaertensis leaf extract (SQE) exerts a protective effect against inflammation in a dextran sulfate sodium (DSS)-induced colitis mouse model. Therefore, colon tissues of DSS-induced colitis mice that were treated with SQE were assayed for levels of proinflammatory markers, mitogen-activated protein kinase signaling, and activation of nuclear factor κB. For this purpose, mice were pretreated with SQE (100 mg/kg or 300 mg/kg body weight) by gavage for a 2-week period. Mice then received either SQE or sulfasalazine (100 mg/kg body weight) with 2.5% DSS in drinking water for 7 days twice daily and 7 days of tap water ad libitum between DSS treatment. Treatment with SQE was found to attenuate the severity of DSS-induced colitis, as assessed by disease activity index scores, shrinkage of colon length, and histopathologic changes. SQE reduced DSS-induced proliferation in distal colon tissues. It also significantly suppressed levels of tumor necrosis factor-α in serum and colon tissues, nitric oxide synthase, cyclooxygenase, and levels of phosphorylated c-Jun N-terminal kinases, p38, extracellular-signal-regulated kinases 1/2, and IκBα in colon tissues. To our knowledge, this is the first study to demonstrate that SQE supplementation can exert an anti-inflammatory effect on experimental chronic colitis.
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Growth promotion in broilers by both oxytetracycline and Macleaya cordata extract is based on their anti-inflammatory properties. Br J Nutr 2014; 112:1110-8. [PMID: 25181450 DOI: 10.1017/s0007114514001871] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The non-antibiotic anti-inflammatory theory of antimicrobial growth promoters (AGP) predicts that alternatives can be selected by simple in vitro tests. In vitro, the known AGP oxytetracycline (OTC) and a Macleaya cordata extract (MCE) had an anti-inflammatory effect with a half-maximal inhibitory concentration of 88 and 132 mg/l, respectively. In vivo, chickens received three different concentrations of MCE in drinking-water, OTC in feed and a control. Body weight (BW), feed intake (FI) and gain:feed (G:F) ratio were determined on days 14, 21 and 35. On day 35, body composition was determined. Plasma α1-acid glycoprotein (α1-AG) concentration was measured on days 21 and 35, and the expression of several jejunal inflammatory genes was determined on day 35. OTC-fed chickens showed a significantly higher BW, FI and G:F ratio compared with the control group at all time points. MCE had a significant linear effect on BW on days 21 and 35, and the G:F ratio was improved only over the whole period, whereas FI was not different. Only MCE but not OTC decreased the percentage of abdominal fat. Plasma α1-AG concentration increased from day 21 to 35, with the values being lower in the treatment groups. Both OTC and MCE significantly reduced the jejunal mucosal expression of inducible NO synthase. For most parameters measured, there was a clear linear dose-response to treatment with MCE. In conclusion, the results are consistent with the anti-inflammatory theory of growth promotion in production animals.
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35
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Kim KM, Kim YS, Lim JY, Min SJ, Ko HC, Kim SJ, Kim Y. Intestinal anti-inflammatory activity of Sasa quelpaertensis leaf extract by suppressing lipopolysaccharide-stimulated inflammatory mediators in intestinal epithelial Caco-2 cells co-cultured with RAW 264.7 macrophage cells. Nutr Res Pract 2014; 9:3-10. [PMID: 25671061 PMCID: PMC4317476 DOI: 10.4162/nrp.2015.9.1.3] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/18/2014] [Accepted: 07/02/2014] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND/OBJECTIVES Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, involves chronic inflammation of the gastrointestinal tract. Previously, Sasa quelpaertensis leaves have been shown to mediate anti-inflammation and anti-cancer effects, although it remains unclear whether Sasa leaves are able to attenuate inflammation-related intestinal diseases. Therefore, the aim of this study was to investigate the anti-inflammatory effects of Sasa quelpaertensis leaf extract (SQE) using an in vitro co-culture model of the intestinal epithelial environment. MATERIALS/METHODS An in vitro co-culture system was established that consisted of intestinal epithelial Caco-2 cells and RAW 264.7 macrophages. Treatment with lipopolysaccharide (LPS) was used to induce inflammation. RESULTS Treatment with SQE significantly suppressed the secretion of LPS-induced nitric oxide (NO), prostaglandin E2 (PGE2), IL-6, and IL-1β in co-cultured RAW 264.7 macrophages. In addition, expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase (COX)-2, and tumor necrosis factor (TNF)-α were down-regulated in response to inhibition of IκBα phosphorylation by SQE. Compared with two bioactive compounds that have previously been identified in SQE, tricin and P-coumaric acid, SQE exhibited the most effective anti-inflammatory properties. CONCLUSIONS SQE exhibited intestinal anti-inflammatory activity by inhibiting various inflammatory mediators mediated through nuclear transcription factor kappa-B (NF-kB) activation. Thus, SQE has the potential to ameliorate inflammation-related diseases, including IBD, by limiting excessive production of pro-inflammatory mediators.
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Affiliation(s)
- Kyung-Mi Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Yoo-Sun Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Ji Ye Lim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Soo Jin Min
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Hee-Chul Ko
- Jeju Sasa Industry Development Agency, Jeju National University, Jeju 690-756, Korea
| | - Se-Jae Kim
- Department of Biology, Jeju National University, Jeju 690-756, Korea
| | - Yuri Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
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Pomorska-Mól M, Kwit K, Markowska-Daniel I, Pejsak Z. The effect of doxycycline treatment on the postvaccinal immune response in pigs. Toxicol Appl Pharmacol 2014; 278:31-8. [DOI: 10.1016/j.taap.2014.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 04/03/2014] [Accepted: 04/04/2014] [Indexed: 11/29/2022]
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Nardostachys jatamansi (D. Don) DC prevents LPS-induced inflammation in RAW 264.7 macrophages by preventing ROS production and down-regulating inflammatory gene expression. Food Sci Biotechnol 2014. [DOI: 10.1007/s10068-014-0121-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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Lee SY, Kim YS, Lim JY, Chang N, Kang MH, Oh SY, Lee HJ, Kim H, Kim Y. Effects of plant-based Korean food extracts on lipopolysaccharide-stimulated production of inflammatory mediators in vitro. Nutr Res Pract 2014; 8:249-56. [PMID: 24944768 PMCID: PMC4058557 DOI: 10.4162/nrp.2014.8.3.249] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 12/03/2013] [Accepted: 12/10/2013] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND/OBJECTIVES The traditional Korean diet is plant-based and rich in antioxidants. Previous studies have investigated the potential health benefits of individual nutrients of Korean foods. However, the cumulative effects of a Korean diet on inflammation remain poorly understood. Therefore, the aim of this study was to investigate the anti-inflammatory effects of a plant-based Korean diet. MATERIALS/METHODS Using data from the Fifth Korean National Health and Nutrition Examination Survey, 75 individual plant food items were selected which represent over 1% of the total diet intake of the Korean diet. These items were classified into ten different food groups, and the vegetable (Veg) and fruit (Fruit) groups were studied based on their high antioxidant capacity. For comparison, a mixture of all ten groups (Mix) was prepared. To produce a model of inflammation with which to test these Veg, Fruit, and Mix plant-based Korean food extracts (PKE), RAW264.7 macrophages were treated with lipopolysaccharide (LPS). RESULTS Levels of nitric oxide (NO) and prostaglandin E2 (PGE2), as well as protein expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) were found to be lower following PKE treatment. Furthermore, PKE treatment was found to suppress tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) via the nuclear transcription factor kappa-B (NF-κB) signaling pathway. Overall, the Mix group exhibited the greatest anti-inflammatory effects compared with Veg and Fruit PKE group. CONCLUSIONS Inhibition of LPS-induced pro-inflammatory mediators by the PKE tested was found to involve an inhibition of NF-kB activation. Moreover, PKE tested have the potential to ameliorate various inflammation-related diseases by limiting the excessive production of pro-inflammatory mediators.
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Affiliation(s)
- Sun Young Lee
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Yoo-Sun Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Ji Ye Lim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Namsoo Chang
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Myung-Hee Kang
- Department of Food and Nutrition, Hannam University, Daedeok Valley Campus, Daejeon 305-811, Korea
| | - Se-Young Oh
- Department of Food and Nutrition, Kyung Hee University, Seoul 130-701, Korea
| | - He-Jin Lee
- Department of Food and Nutrition, Hannam University, Daedeok Valley Campus, Daejeon 305-811, Korea
| | - Hyesook Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
| | - Yuri Kim
- Department of Nutritional Science and Food Management, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul 120-750, Korea
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Devi KSP, Behera B, Sahoo B, Maiti TK. Heteroglucan-dendrimer glycoconjugate: a modulated construct with augmented immune responses and signaling phenomena. Biochim Biophys Acta Gen Subj 2014; 1840:2794-805. [PMID: 24806609 DOI: 10.1016/j.bbagen.2014.04.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 03/15/2014] [Accepted: 04/29/2014] [Indexed: 11/19/2022]
Abstract
BACKGROUND Newer strategies for augmenting immune responses of pharmacologically active glucans may serve to improve the medicinal potential of these biomolecules. With this aim, the present work was focused on generating targeted high molecular size glucan particles with magnified immune response activity. METHODS Heteroglucans were conjugated with PAMAM dendrimers using a Schiff base reductive amination reaction to generate a polytethered molecule with multiple glucan motifs. The modulated construct was characterized by FTIR, TEM, (1)H NMR and dynamic light scattering (DLS) methods. Effects of conjugated glucans were examined in RAW 264.7 macrophage cells as well as in S-180 murine tumor models. RESULTS Dendrimer-conjugated glucans were found to exhibit a two-fold increase in immune stimulation in comparison to unconjugated glucans. This may be corroborated by the predominant enhancement in immunological functions such as nitric oxide production, ROS generation and immune directed tumor inhibition in murine models. Immune cell surface markers (CD4, CD8, CD19, MHC-II) and cytokine levels were also found to be highly up-regulated in the splenocytes of mice subjected to particulate glucan administration. Our study also demonstrated that conjugated glucan treatment to RAW 264.7 cells strongly enhanced the phosphorylation of two downstream signalling molecules of the mitogen activated protein kinase (MAPKs) family: p38 and MEK1/2 relative to single glucans thereby relating molecular mechanisms with enhanced immune stimulation. CONCLUSIONS AND GENERAL SIGNIFICANCE The results obtained thus support that particulate format of soluble heteroglucan will thereby improve its functionality and identify leads in therapeutic competence.
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Affiliation(s)
- K Sanjana P Devi
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Birendra Behera
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Banalata Sahoo
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
| | - Tapas K Maiti
- Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India.
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Lee SH, Suh SJ, Lee KH, Yang JB, Choi SU, Park SS. Anti-Inflammatory Effect of Peel Extracts from Citrus Fruits. ACTA ACUST UNITED AC 2013. [DOI: 10.13103/jfhs.2013.28.4.342] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Bode C, Diedrich B, Muenster S, Hentschel V, Weisheit C, Rommelsheim K, Hoeft A, Meyer R, Boehm O, Knuefermann P, Baumgarten G. Antibiotics regulate the immune response in both presence and absence of lipopolysaccharide through modulation of Toll-like receptors, cytokine production and phagocytosis in vitro. Int Immunopharmacol 2013; 18:27-34. [PMID: 24239744 DOI: 10.1016/j.intimp.2013.10.025] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 10/18/2013] [Accepted: 10/19/2013] [Indexed: 12/12/2022]
Abstract
The inflammatory response to pathogen-associated molecular patterns such as lipopolysaccharide (LPS) in sepsis is mediated via Toll-like receptors (TLRs). Since TLRs also trigger various immune functions, including phagocytosis, their modulation is a promising strategy in the treatment of sepsis. As antibiotics have immunomodulatory properties, this study examined the effect of commonly used classes of antibiotics on i) the expression of TLRs and cytokines and ii) the phagocytic activity under sepsis-like conditions in vitro. This was achieved by incubating THP-1 monocytes and peripheral blood mononuclear cells (PBMCs) obtained from patients after open-heart surgery with the addition of LPS and six key antibiotics (piperacillin, doxycycline, erythromycin, moxifloxacin or gentamicin). After 24h, mRNA levels of both cytokines (IL-1β, IL-6) and TLRs (1, 2, 4, and 6) were monitored and phagocytosis was determined following coincubation with Escherichia coli. Each antibiotic differentially regulated the gene expression of the investigated TLRs and cytokines in monocytes. Erythromycin, moxifloxacin and doxycyclin displayed the strongest effects and changed mRNA-levels of the investigated genes up to 5.6-fold. Consistent with this, antibiotics and, in particular, moxifloxacin, regulated the TLR-and cytokine expression in activated PBMCs obtained from patients after open-heart surgery. Furthermore, piperacillin, doxycyclin and moxifloxacin inhibited the phagocytic activity of monocytes. Our results suggest that antibiotics regulate the immune response by modulating TLR- and cytokine expression as well as phagocytosis under septic conditions. Moxifloxacin, doxycycline and erythromycin were shown to possess the strongest immunomodulatory effects and these antibiotic classes should be considered for future immunomodulatory studies in sepsis.
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Affiliation(s)
- Christian Bode
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany.
| | - Britta Diedrich
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany; Freiburg Institute for Advanced Studies-LifeNet, Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - Stefan Muenster
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
| | - Viktoria Hentschel
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
| | - Christina Weisheit
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
| | - Kuno Rommelsheim
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
| | - Andreas Hoeft
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
| | - Rainer Meyer
- Institute of Physiology II, University of Bonn, Bonn, Germany
| | - Olaf Boehm
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
| | - Pascal Knuefermann
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
| | - Georg Baumgarten
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Bonn, Bonn, Germany
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NF-κB-targeted anti-inflammatory activity of Prunella vulgaris var. lilacina in macrophages RAW 264.7. Int J Mol Sci 2013; 14:21489-503. [PMID: 24177568 PMCID: PMC3856017 DOI: 10.3390/ijms141121489] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Revised: 09/29/2013] [Accepted: 10/23/2013] [Indexed: 11/17/2022] Open
Abstract
Prunella vulgaris var. lilacina, a herbal medicine, has long been used in Korea for the treatment of sore throat, and to alleviate fever and accelerate wound healing. Although the therapeutic effect of P. vulgaris var. lilacina is likely associated with anti-inflammatory activity, the precise underlying mechanisms are largely unknown. Here, we sought to elucidate the possible mechanisms of the anti-inflammatory activity. We have investigated the anti-inflammatory activity of the various solvent fractions (hexane, butanol, chloroform and water) from the ethanol extract of P. vulgaris var. lilacina in activated macrophages. The hexane fraction exhibited higher anti-inflammatory activities, inducing inhibition of nitric oxide and prostaglandin E2 production as well as inducible nitric oxide synthase, cyclooxygenase-2, and tumor necrosis factor-α mRNA expression in response to lipopolysaccharide stimulation. Moreover, the hexane fraction from P. vulgaris var. lilacina significantly inhibited the activation of the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and the nuclear translocation of the NF-κB p50 and p65 subunits. These results indicate that P. vulgaris var. lilacina has an anti-inflammatory capacity in vitro, suggesting that it could be a potential source of natural anti-inflammatory agents.
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Mahla RS, Reddy MC, Prasad DVR, Kumar H. Sweeten PAMPs: Role of Sugar Complexed PAMPs in Innate Immunity and Vaccine Biology. Front Immunol 2013; 4:248. [PMID: 24032031 PMCID: PMC3759294 DOI: 10.3389/fimmu.2013.00248] [Citation(s) in RCA: 154] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Accepted: 08/09/2013] [Indexed: 12/12/2022] Open
Abstract
Innate sensors play a critical role in the early innate immune responses to invading pathogens through sensing of diverse biochemical signatures also known as pathogen associated molecular patterns (PAMPs). These biochemical signatures primarily consist of a major family of biomolecules such as proteins, lipids, nitrogen bases, and sugar and its complexes, which are distinct from host molecules and exclusively expressed in pathogens and essential to their survival. The family of sensors known as pattern recognition receptors (PRRs) are germ-line encoded, evolutionarily conserved molecules, and consist of Toll-like receptors (TLRs), RIG-I-like receptors (RLRs), NOD-like receptors (NLRs), C-type lectin-like receptors (CLRs), and DNA sensors. Sensing of PAMP by PRR initiates the cascade of signaling leading to the activation of transcription factors, such as NF-κB and interferon regulatory factors (IRFs), resulting in a variety of cellular responses, including the production of interferons (IFNs) and pro-inflammatory cytokines. In this review, we discuss sensing of different types of glycosylated PAMPs such as β-glucan (a polymeric sugar) or lipopolysaccharides, nucleic acid, and so on (sugar complex PAMPs) by different families of sensors, its role in pathogenesis, and its application in development of potential vaccine and vaccine adjuvants.
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Affiliation(s)
- Ranjeet Singh Mahla
- Laboratory of Immunology, Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) , Bhopal , India
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Anti-inflammatory activity of ethanolic extract of Sargassum sagamianum in RAW 264.7 cells. Food Sci Biotechnol 2013. [DOI: 10.1007/s10068-013-0191-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Huang J, Qin Y, Liu B, Li GY, Ouyang L, Wang JH. In silico analysis and experimental validation of molecular mechanisms of salvianolic acid A-inhibited LPS-stimulated inflammation, in RAW264.7 macrophages. Cell Prolif 2013; 46:595-605. [PMID: 24033467 DOI: 10.1111/cpr.12056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 06/03/2013] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVES The aim of this study was to explore mechanisms by which salvianolic acid A (SAA) revealed its anti-inflammatory activity, in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. MATERIALS AND METHODS Nitric oxide (NO) concentration was determined by the Griess reaction and cell viability was assessed by MTT assay. Interleukin-6, TNFα and interleukin-1β were determined by ELISA. The RAW264.7 cells were transfected with siRNA against p38 or HO-1. Expressions of COX-2, inducible NO synthase (iNOS), NF-κB, HO-1, p-p38 and phosphorylation of IκB kinase α/β were detected by western blotting. Potential targets of SAA were analysed by homology modelling, target prediction, protein-protein interaction prediction and docking studies. RESULTS Salvianolic acid A suppressed LPS-triggered production of NO, TNFα and Interleukin-6. It also reduced protein expression of inducible NO synthase and COX-2, and reduced translocation of NF-κB to nuclei. Moreover, SAA promoted expression of phosphorylated p38, and downstream HO-1. Zn (II) protoporphyrin IX, a specific inhibitor of HO-1, or siRNA against HO-1 could effectively increase transfer of NF-κB. SAA was predicted to target amyloid-beta protein-like protein and arachidonate 5-lipoxygenase, that could regulate p38 and HO-1. CONCLUSIONS In silico analysis and experimental validation together demonstrated that SAA exhibited its anti-inflammatory effect via the p38-HO-1 pathway in LPS-stimulated RAW264.7 cells, reduced transfer of NF-κB to the nuclei and thus reduced production of inflammatory mediators.
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Affiliation(s)
- J Huang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, China
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Anti-Inflammatory Effect of Auraptene Extracted from Trifoliate Orange (Poncirus Trifoliate) on LPS-Stimulated RAW 264.7 Cells. Inflammation 2013; 36:1525-32. [DOI: 10.1007/s10753-013-9695-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Early biomarker activity in severe sepsis and septic shock and a contemporary review of immunotherapy trials: not a time to give up, but to give it earlier. Shock 2013; 39:127-37. [PMID: 23324881 DOI: 10.1097/shk.0b013e31827dafa7] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Improving time to diagnosis and intervention has positively impacted outcomes in acute myocardial infarction, stroke, and trauma through elucidating the early pathogenesis of those diseases. This insight may partly explain the futility of time-insensitive immunotherapy trials for severe sepsis and septic shock. The aim of this study was to examine the early natural history of circulatory biomarker activity in sepsis, relative to previous animal and human outcome trials. We conducted a literature search using PubMed, MEDLINE, and Google Scholar to identify outcome trials targeting biomarkers with emphasis on the timing of therapy. These findings were compared with the biomarker activity observed over the first 72 h of hospital presentation in a cohort of severe sepsis and septic shock patients. Biomarker levels in animal and human research models are elevated within 30 min after exposure to an inflammatory septic stimulus. Consistent with these findings, the biomarker cascade is activated at the most proximal point of hospital presentation in our patient cohort. These circulatory biomarkers overlap; some have bimodal patterns and generally peak between 3 and 36 h while diminishing over the subsequent 72 h of observation. When this is taken into account, prior outcome immunotherapy trials have generally enrolled patients after peak circulatory biomarker concentrations. In previous immunotherapy sepsis trials, intervention was delayed after the optimal window of peak biomarker activity. As a result, future studies need to recalibrate the timing of enrollment and administration of immunotherapy agents that still may hold great promise for this deadly disease.
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Sohn SH, Yun BS, Kim SY, Choi WS, Jeon HS, Yoo JS, Kim SK. Anti-inflammatory activity of the active components from the roots ofCosmos bipinnatusin lipopolysaccharide-stimulated RAW 264.7 macrophages. Nat Prod Res 2013; 27:1037-40. [PMID: 22607357 DOI: 10.1080/14786419.2012.686906] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Brentnall C, Cheng Z, McKellar Q, Lees P. Pharmacokinetic–pharmacodynamic integration and modelling of oxytetracycline administered alone and in combination with carprofen in calves. Res Vet Sci 2013; 94:687-94. [DOI: 10.1016/j.rvsc.2013.01.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Revised: 09/26/2012] [Accepted: 01/20/2013] [Indexed: 01/10/2023]
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Lee J, Yang G, Lee K, Lee MH, Eom JW, Ham I, Choi HY. Anti-inflammatory effect of Prunus yedoensis through inhibition of nuclear factor-κB in macrophages. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:92. [PMID: 23631356 PMCID: PMC3659032 DOI: 10.1186/1472-6882-13-92] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 04/19/2013] [Indexed: 12/30/2022]
Abstract
Background Prunus yedoensis (PY) is a traditional anti-allergy and anti-inflammatory herb medicine used in South Korea. However, until date, little is known regarding its mechanism of action. Methods In order to elucidate the mechanism of anti-inflammatory effect of PY, the constituents of PY were analysed by high performance liquid chromatography (HPLC), and nitric oxide (NO) and prostaglandin E2 (PGE2) production were measured enzyme-linked immuno sorbent assay (ELISA). The expression levels of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and nuclear factor-κB (NF-κB) were also measured by western blotting in lipopolysaccharide (LPS)-induced RAW 264.7 macrophage cells treated with PY. Results The results indicate that (50, 100 μg/mL) methanol and ethyl acetate fractionation extracts of PY not only inhibited LPS-mediated NO production and iNOS expression, but also decreased LPS-induced PGE2 production and COX-2 expression. The anti-inflammatory effects of PY were also due to the attenuation of nuclear translocation of NF-κB, as evaluated by the use of anti-p50 on nuclear fractions. LPS-induced nuclear translocation of NF-κB decreased significantly by the methanol extract and ethyl acetate fraction of PY. High performance liquid chromatography (HPLC) analyses revealed that methanol extract and ethyl acetate fraction have similar patterns of retention time and peaks. Conclusion Our results demonstrate that methanol extracts and the ethyl acetate fraction of PY have anti-inflammatory properties, thus emphasizing the potential of PY as a natural health product.
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