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Sun C, Xu Y, Xu G, Ji X, Jiang P, He Y. Active fractions from Jingfang Baidu Powder alleviate Klebsiella-induced Pneumonia by inhibiting TLR4/Myd88-ERK signaling pathway. JOURNAL OF ETHNOPHARMACOLOGY 2024; 330:118067. [PMID: 38636574 DOI: 10.1016/j.jep.2024.118067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/04/2024] [Accepted: 03/15/2024] [Indexed: 04/20/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Jingfang Baidu Powder (JFBDP) is a classic traditional Chinese medicine prescription. Although Jingfang Baidu powder obtained a general consensus on clinical efficacy in treating pneumonia, there were many Chinese herbal drugs in formula, complex components, and large oral dosage, which brings certain obstacles to clinical application. AIM OF THE STUDY Therefore, screening of the active fraction that exerts anti-pneumonia helps improve the pharmaceutical preparation, improve the treatment compliance of patients, and further contribute to the clinical application, and the screening of the new active ingredients with anti-pneumonia. The histopathological observation, real-time quantitative PCR, western blotting, and immunofluorescence were applied to evaluate the anti-pneumonia efficacy of active fractions from JFBDP. RESULTS Three fractions from JFBDP inhibit the gene expression of IL-1β, IL-10, CCL3, CCL5, and CCL22 in lung tissue infected by Klebsiella at various degrees, and presented a good dose-response relationship. JF50 showed stronger anti-inflammatory effects among three fractions including JF30, JF50, and JF75. Besides, JF50 significantly reduced the protein expression of TLR4 and Myd88 in lung tissue infected with Klebsiella, and it also significantly inhibited p-ERK and p-NF-κB p65. JF50 significantly inhibits the protein expression of Caspase 3, Caspase 8, and Caspase 9 in lung tissue infected with Klebsiella at the dose of 25 mg/kg and 50 mg/kg. CONCLUSION JF50 improves lung pathological damage in Klebsiella pneumonia mice by inhibiting the TLR4/Myd88/NF-κB-ERK signaling pathway, and inhibiting apoptosis of lung tissue cells. These findings provide a reference for further exploring the active substance basis of Jingfang Baidu Powder in treating bacterial pneumonia.
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Affiliation(s)
- Chuanbo Sun
- College of Biotechnology and Pharmaceutical Engineering of West Anhui University, Lu'an, 237012, China.
| | - Yuting Xu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Guangpei Xu
- College of Biotechnology and Pharmaceutical Engineering of West Anhui University, Lu'an, 237012, China.
| | - Xu Ji
- Anhui Province Key Laboratory of Livestock and Poultry Product Safety Engineering, Institute of Animal Science and Veterinary Medicine, Anhui Academy of Agricultural Sciences, Hefei, 230001, China.
| | - Ping Jiang
- College of Biotechnology and Pharmaceutical Engineering of West Anhui University, Lu'an, 237012, China.
| | - Yanfei He
- College of Biotechnology and Pharmaceutical Engineering of West Anhui University, Lu'an, 237012, China.
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Liu Q, Zhu X, Guo S. From pancreas to lungs: The role of immune cells in severe acute pancreatitis and acute lung injury. Immun Inflamm Dis 2024; 12:e1351. [PMID: 39023414 PMCID: PMC11256889 DOI: 10.1002/iid3.1351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 06/25/2024] [Accepted: 07/08/2024] [Indexed: 07/20/2024] Open
Abstract
BACKGROUND Severe acute pancreatitis (SAP) is a potentially lethal inflammatory pancreatitis condition that is usually linked to multiple organ failure. When it comes to SAP, the lung is the main organ that is frequently involved. Many SAP patients experience respiratory failure following an acute lung injury (ALI). Clinicians provide insufficient care for compounded ALI since the underlying pathophysiology is unknown. The mortality rate of SAP patients is severely impacted by it. OBJECTIVE The study aims to provide insight into immune cells, specifically their roles and modifications during SAP and ALI, through a comprehensive literature review. The emphasis is on immune cells as a therapeutic approach for treating SAP and ALI. FINDINGS Immune cells play an important role in the complicated pathophysiology ofSAP and ALI by maintaining the right balance of pro- and anti-inflammatory responses. Immunomodulatory drugs now in the market have low thepeutic efficacy because they selectively target one immune cell while ignoring immune cell interactions. Accurate management of dysregulated immune responses is necessary. A critical initial step is precisely characterizing the activity of the immune cells during SAP and ALI. CONCLUSION Given the increasing incidence of SAP, immunotherapy is emerging as a potential treatment option for these patients. Interactions among immune cells improve our understanding of the intricacy of concurrent ALI in SAP patients. Acquiring expertise in these domains will stimulate the development of innovative immunomodulation therapies that will improve the outlook for patients with SAP and ALI.
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Affiliation(s)
- Qi Liu
- Emergency Medicine Clinical Research Center, Beijing Chao‐Yang HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Cardiopulmonary Cerebral ResuscitationBeijingChina
| | - Xiaomei Zhu
- Emergency Medicine Clinical Research Center, Beijing Chao‐Yang HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Cardiopulmonary Cerebral ResuscitationBeijingChina
| | - Shubin Guo
- Emergency Medicine Clinical Research Center, Beijing Chao‐Yang HospitalCapital Medical UniversityBeijingChina
- Beijing Key Laboratory of Cardiopulmonary Cerebral ResuscitationBeijingChina
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Zeng Y, Liu X, Yi Q, Qiao G, Wang L, Chen L, Fan L, Li Y, Duan L, Huang L, Zhuang Q, Zhou Y, Xiong Y. Free total rhubarb anthraquinones protect intestinal mucosal barrier of SAP rats via inhibiting the NLRP3/caspase-1/GSDMD pyroptotic pathway. JOURNAL OF ETHNOPHARMACOLOGY 2024; 326:117873. [PMID: 38346523 DOI: 10.1016/j.jep.2024.117873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/27/2024] [Accepted: 02/04/2024] [Indexed: 02/24/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Rhubarb is the peeled and dried roots of Rheum palmatum L. and Rheum tanguticum Maxim. ex Balf. or Rheum officinale Baill. Free total rhubarb anthraquinones (FTRAs) were isolated and extracted from rhubarb. Previous studies have revealed that the early administration of FTRAs protects the intestinal mucosal barrier in rats with severe acute pancreatitis (SAP), the mechanism of which is not yet clear. However, we observed an enhanced expression of intestinal pyroptotic factors in rats treated with SAP, which may be related to the mechanism of intestinal barrier protection by FTRAs. AIM OF THE STUDY The main objective of this study was to investigate the mechanism by which FTRAs protect the intestinal mucosal barrier in SAP rats, focusing on the classical pyroptosis pathway. MATERIALS AND METHODS SAP was induced in rats through retrograde injection of sodium taurocholate via the pancreaticobiliary duct. Subsequently, FTRAs (22.5, 45, and 90 mg/kg), rhubarb (900 mg/kg, positive control), and saline (control) were administered at 0 h (immediately), 12 h, and 24 h post-surgery. Pancreatic and intestinal tissue injury, positive PI staining rate, and expression levels of various factors in intestinal tissues were compared across different groups. These factors include diamine oxidase (DAO), lactate dehydrogenase (LDH), high mobility group box chromosomal protein 1(HMGB1) and pro-inflammatory factors in intestinal and serum, pyroptosis-associated factors, toll-like receptor 4 (TLR-4), nuclear factor kappa-B (NF-kB), apoptosis-associated speck-like protein (ASC), NOD-like receptor protein 3 (NLRP3), cysteine protease-1 (caspase-1) and Gasdermin (GSDMD). RESULTS The findings indicated that FTRAs protected the damaged intestine and pancreas and restored the expression of intestinal epithelial junction proteins in SAP rats. Additionally, it reduced intestinal and serum levels of DAO, interleukin 1, interleukin 18, HMGB1, and LDH, attenuated intestinal Positive PI staining rate, and significantly decreased the expressions of TLR-4, NF-kB, ASC, NLRP3, caspase-1 and GSDMD in SAP rats. CONCLUSIONS The results suggest that FTRAs inhibited pyroptosis through down-regulation of the NLRP3-Caspase-1-GSDMD and TLR-4- NF-kB signaling pathways of intestinal tissues., thereby protecting the intestinal barrier of SAP rats.
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Affiliation(s)
- Yue Zeng
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China; Department of Pharmacy, People's Hospital of Zhongjiang County, Deyang, Sichuan, 618000, China
| | - Xingyu Liu
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Qing Yi
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Gan Qiao
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Lulu Wang
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Li Chen
- Department of Pharmacy, Affiliated Hospital of Traditional Chinese Medicine, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Ling Fan
- Department of Pharmacy, People's Hospital of Ya'an, Ya'an, 625000, China
| | - Yao Li
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Lingjing Duan
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Liqiang Huang
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China; Department of Pharmacy, Second People's Hospital of Yibin, Yibin, 644000, China
| | - Qian Zhuang
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Yejiang Zhou
- Department of Gastrointestinal Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China.
| | - Yuxia Xiong
- Department of Pharmacology, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, 646000, China.
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Carnwath TP, Demel SL, Prestigiacomo CJ. Genetics of ischemic stroke functional outcome. J Neurol 2024; 271:2345-2369. [PMID: 38502340 PMCID: PMC11055934 DOI: 10.1007/s00415-024-12263-x] [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: 11/20/2023] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 03/21/2024]
Abstract
Ischemic stroke, which accounts for 87% of cerebrovascular accidents, is responsible for massive global burden both in terms of economic cost and personal hardship. Many stroke survivors face long-term disability-a phenotype associated with an increasing number of genetic variants. While clinical variables such as stroke severity greatly impact recovery, genetic polymorphisms linked to functional outcome may offer physicians a unique opportunity to deliver personalized care based on their patient's genetic makeup, leading to improved outcomes. A comprehensive catalogue of the variants at play is required for such an approach. In this review, we compile and describe the polymorphisms associated with outcome scores such as modified Rankin Scale and Barthel Index. Our search identified 74 known genetic polymorphisms spread across 48 features associated with various poststroke disability metrics. The known variants span diverse biological systems and are related to inflammation, vascular homeostasis, growth factors, metabolism, the p53 regulatory pathway, and mitochondrial variation. Understanding how these variants influence functional outcome may be helpful in maximizing poststroke recovery.
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Affiliation(s)
- Troy P Carnwath
- University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA.
| | - Stacie L Demel
- Department of Neurology, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
| | - Charles J Prestigiacomo
- Department of Neurosurgery, University of Cincinnati College of Medicine, Cincinnati, OH, 45267, USA
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Gómez-Ferrer M, Amaro-Prellezo E, Albiach-Delgado A, Ten-Domenech I, Kuligowski J, Sepúlveda P. Identification of omega-3 oxylipins in human milk-derived extracellular vesicles with pro-resolutive actions in gastrointestinal inflammation. Front Immunol 2023; 14:1293737. [PMID: 38054009 PMCID: PMC10694275 DOI: 10.3389/fimmu.2023.1293737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 10/27/2023] [Indexed: 12/07/2023] Open
Abstract
Introduction Premature infants (PIs) are at risk of suffering necrotizing enterocolitis (NEC), and infants consuming human milk (HM) show a lower incidence than infants receiving formula. The composition of HM has been studied in depth, but the lipid content of HM-derived small extracellular vesicles (HM sEVs) remains unexplored. Identifying these molecules and their biological effects has potential for the treatment of intestinal disorders in PIs and could contribute to the development of HM-based fortified formulas. Methods We isolated HM sEVs from HM samples and analyzed their oxylipin content using liquid chromatography coupled to mass spectrometry, which revealed the presence of anti-inflammatory oxylipins. We then examined the efficacy of a mixture of these oxylipins in combating inflammation and fibrosis, in vitro and in a murine model of inflammatory bowel disease (IBD). Results HM-related sEVs contained higher concentrations of oxylipins derived from docosahexaenoic acid, an omega-3 fatty acid. Three anti-inflammatory oxylipins, 14-HDHA, 17-HDHA, and 19,20-DiHDPA (ω3 OXLP), demonstrated similar efficacy to HM sEVs in preventing cell injury, inducing re-epithelialization, mitigating fibrosis, and modulating immune responses. Both ω3 OXLP and HM sEVs effectively reduced inflammation in IBD-model mice, preventing colon shortening, infiltration of inflammatory cells and tissue fibrosis. Discussion Incorporating this unique cocktail of oxylipins into fortified milk formulas might reduce the risk of NEC in PIs and also provide immunological and neurodevelopmental support.
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Affiliation(s)
- Marta Gómez-Ferrer
- Regenerative Medicine and Heart Transplantation Unit, Health Research Institute Hospital La Fe, Valencia, Spain
| | - Elena Amaro-Prellezo
- Regenerative Medicine and Heart Transplantation Unit, Health Research Institute Hospital La Fe, Valencia, Spain
| | - Abel Albiach-Delgado
- Neonatal Research Group, Health Research Institute Hospital La Fe, Valencia, Spain
| | - Isabel Ten-Domenech
- Neonatal Research Group, Health Research Institute Hospital La Fe, Valencia, Spain
| | - Julia Kuligowski
- Neonatal Research Group, Health Research Institute Hospital La Fe, Valencia, Spain
| | - Pilar Sepúlveda
- Regenerative Medicine and Heart Transplantation Unit, Health Research Institute Hospital La Fe, Valencia, Spain
- Cardiology Service, Hospital Universitari i Politècnic La Fe, Valencia, Spain
- Centro de Investigación Biomédica en Red Enfermedades Cardiovasculares (CIBERCV), Carlos III Institute of Health, Madrid, Spain
- Department of Pathology, University of Valencia, Valencia, Spain
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Peng D, Chen Y, Sun Y, Zhang Z, Cui N, Zhang W, Qi Y, Zeng Y, Hu B, Yang B, Wang Q, Kuang H. Saikosaponin A and Its Epimers Alleviate LPS-Induced Acute Lung Injury in Mice. Molecules 2023; 28:molecules28030967. [PMID: 36770631 PMCID: PMC9919285 DOI: 10.3390/molecules28030967] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/05/2023] [Accepted: 01/13/2023] [Indexed: 01/21/2023] Open
Abstract
The purpose of this work was to illustrate the effect of processing with vinegar on saikosaponins of Bupleurum chinense DC. (BC) and the protective effects of saikosaponin A (SSA), saikosaponin b1 (SSb1), saikosaponin b2 (SSb2), and saikosaponin D (SSD) in lipopolysaccharide (LPS)-induced acute lung injury (ALI) mice. We comprehensively evaluated the anti-inflammatory effects and potential mechanisms of SSA, SSb1, SSb2, and SSD through an LPS-induced ALI model using intratracheal injection. The results showed that SSA, SSb1, SSb2, and SSD significantly decreased pulmonary edema; reduced the levels of IL-6, TNF-α, and IL-1β in serum and lung tissues; alleviated pulmonary pathological damage; and decreased the levels of the IL-6, TNF-α, and IL-1β genes and the expression of NF-κB/TLR4-related proteins. Interestingly, they were similar in structure, but SSb2 had a better anti-inflammatory effect at the same dose, according to a principal component analysis. These findings indicated that it may not have been comprehensive to only use SSA and SSD as indicators to evaluate the quality of BC, especially as the contents of SSb1 and SSb2 in vinegar-processed BC were significantly increased.
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Affiliation(s)
- Donghui Peng
- Key Laboratory of Basic and Application Research of Beiyao, Ministry of Education, Heilongjiang University of Chinese Medicine, No. 24, Heping Road, Harbin 150040, China
| | - Yuchan Chen
- Key Laboratory of Basic and Application Research of Beiyao, Ministry of Education, Heilongjiang University of Chinese Medicine, No. 24, Heping Road, Harbin 150040, China
| | - Yanping Sun
- Key Laboratory of Basic and Application Research of Beiyao, Ministry of Education, Heilongjiang University of Chinese Medicine, No. 24, Heping Road, Harbin 150040, China
| | - Zhihong Zhang
- Key Laboratory of Basic and Application Research of Beiyao, Ministry of Education, Heilongjiang University of Chinese Medicine, No. 24, Heping Road, Harbin 150040, China
| | - Na Cui
- Key Laboratory of Basic and Application Research of Beiyao, Ministry of Education, Heilongjiang University of Chinese Medicine, No. 24, Heping Road, Harbin 150040, China
| | - Wensen Zhang
- Key Laboratory of Basic and Application Research of Beiyao, Ministry of Education, Heilongjiang University of Chinese Medicine, No. 24, Heping Road, Harbin 150040, China
| | - Ying Qi
- Guangdong Engineering Technology Research Center for Standardized Processing of Chinese Materia Medica, Science and Technology Department of Guangdong Province, Guangdong Pharmaceutical University, No. 280, Waihuan East Road, Guangzhou 510006, China
| | - Yuanning Zeng
- Guangdong Engineering Technology Research Center for Standardized Processing of Chinese Materia Medica, Science and Technology Department of Guangdong Province, Guangdong Pharmaceutical University, No. 280, Waihuan East Road, Guangzhou 510006, China
| | - Bin Hu
- National Engineering Research Center for Modernization of Traditional Chinese Medicine-Hakka Medical Resources Branch, School of Pharmacy, Gannan Medical University, No. 1, Medical College Road, Ganzhou 341004, China
| | - Bingyou Yang
- Key Laboratory of Basic and Application Research of Beiyao, Ministry of Education, Heilongjiang University of Chinese Medicine, No. 24, Heping Road, Harbin 150040, China
| | - Qiuhong Wang
- Guangdong Engineering Technology Research Center for Standardized Processing of Chinese Materia Medica, Science and Technology Department of Guangdong Province, Guangdong Pharmaceutical University, No. 280, Waihuan East Road, Guangzhou 510006, China
- Correspondence: (Q.W.); (H.K.)
| | - Haixue Kuang
- Key Laboratory of Basic and Application Research of Beiyao, Ministry of Education, Heilongjiang University of Chinese Medicine, No. 24, Heping Road, Harbin 150040, China
- Correspondence: (Q.W.); (H.K.)
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Hou W, Yang S, Lu J, Shi Y, Chen J, Chen D, Wang F, Liu L. Hypothermic machine perfusion alleviates ischemia-reperfusion injury of intestinal transplantation in pigs. Front Immunol 2023; 14:1117292. [PMID: 36926337 PMCID: PMC10011072 DOI: 10.3389/fimmu.2023.1117292] [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: 12/06/2022] [Accepted: 02/16/2023] [Indexed: 03/08/2023] Open
Abstract
Background Intestinal transplantation (IT) has become an important procedure for the treatment of irreversible intestinal failure. However, IT is extremely vulnerable to ischemia-reperfusion injury (IRI). Due to the limitations of static cold storage (SCS), hypothermic machine perfusion (HMP) is rapidly gaining popularity. In this study, the intestinal HMP system is established and HMP is compared with SCS. Methods An intestinal HMP system was built. Ten miniature pigs were randomly divided into the HMP and SCS groups, and their intestines were perfused using the HMP device and SCS, respectively, followed by orthotopic auto-transplantation. Analysis was done on the grafts between the two groups. Results Operation success rates of the surgery were 100% in both groups. The 7-day survival rate was 100% in the HMP group, which was significantly higher than that of the SCS group (20%, P< 0.05). The pathological results showed that fewer injuries of grafts were in the HMP group. Endotoxin (ET), IL-1, IL-6, IFN-γ and TNF-α levels in the HMP group were significantly lower than in the SCS group (P<0.05), whereas IL-10 levels were significantly higher (P<0.05).The intestinal expression levels of ZO-1 and Occludin were higher in the HMP group compared to the SCS group, whereas Toll-like receptor 4 (TLR4), nuclear factor kappa B (NFκB), and caspase-3 were lower. Conclusions In this study, we established a stable intestinal HMP system and demonstrated that HMP could significantly alleviate intestinal IRI and improve the outcome after IT.
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Affiliation(s)
- Wen Hou
- Research Institute of Transplant Medicine, Tianjin First Central Hospital, Nankai University, Tianjin, China
| | - Shuang Yang
- National Health Commission's Key Laboratory for Critical Care Medicine, Tianjin First Central Hospital, Tianjin, China
| | - Jiansen Lu
- First Central Clinical Institute, Tianjin Medical University, Tianjin, China
| | - Yuan Shi
- Tianjin Key Laboratory for Organ Transplantation, Tianjin First Central Hospital, Tianjin, China
| | - Jing Chen
- Organ Transplant Department, Tianjin First Central Hospital, Tianjin, China
| | - Decheng Chen
- First Central Clinical Institute, Tianjin Medical University, Tianjin, China
| | - Fei Wang
- School of Medicine, Nankai University, Tianjin, China
| | - Lei Liu
- Research Institute of Transplant Medicine, Tianjin First Central Hospital, Nankai University, Tianjin, China.,Tianjin Key Laboratory for Organ Transplantation, Tianjin First Central Hospital, Tianjin, China.,Organ Transplant Department, Tianjin First Central Hospital, Tianjin, China
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8
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Ozturk A, Topcu A, Deniz E, Duman Ozturk S, Arpa M, Kutlu Yilmaz E. The protective effects of trimetazidine against ovary ischemia-reperfusion injury via the TLR4/Nf-kB signal pathway. J Biochem Mol Toxicol 2022; 36:e23114. [PMID: 35633067 DOI: 10.1002/jbt.23114] [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: 01/25/2022] [Revised: 04/12/2022] [Accepted: 05/18/2022] [Indexed: 11/12/2022]
Abstract
Late diagnosis and treatment of ovarian ischemia can lead to worsening of ischemia, irreversible damage to ovarian functions and infertility. In this process, there is no approved medical treatment that can reduce the negative effects of ischemia and contribute positively to ovarian functions during reperfusion after detorsion. Rats were randomly assigned into one of six groups of eight animals each. The groups were designed as follows: The control group, The ischemia(I) group, The Ischemia + Trimetazidine (I + TMZ) (20 mg/kg) group, and The ischemia-reperfusion group (I/R). The Ischemia-Reperfusion + Trimetazidine (I/R + TMZ) (20 mg/kg) group, and The Sham + Trimetazidine (Sham + TMZ) (20 mg/kg) group. In this study performed thiobarbituric acid reactive substances (TBARS), total thiol (-SH), interleukin 1 beta (IL-1β), interleukin 6 (IL-6), toll-like receptor 4 (TLR4), and nuclear factor-kappa B(NF-κβ). Increased oxidative stress and inflammation were as a result of ovarian I and I/R application. Trimetazidine (TMZ), was sufficient to reduce the oxidative stress and inflammation. TLR4 and NF-κβ, which were upregulated by oxidative stress and inflammation, were regressed by TMZ. TMZ should be considered as a potential therapeutic agent in addition to surgery in the clinical treatment of ovarian torsion.
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Affiliation(s)
- Aykut Ozturk
- Department of Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Atilla Topcu
- Department of Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Esra Deniz
- Department of Pharmacology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Seda Duman Ozturk
- Department of Pathology, Recep Tayyip Erdogan University Education and Research Hospital, Rize, Turkey
| | - Medeni Arpa
- Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Eda Kutlu Yilmaz
- Department of Medical Biochemistry, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
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9
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Shi J, He L, Tao R, Zheng H, Li W, Huang S, Li Y, Shang S. TLR4 polymorphisms as potential predictors of atopic dermatitis in Chinese Han children. J Clin Lab Anal 2022; 36:e24385. [PMID: 35349724 PMCID: PMC9102499 DOI: 10.1002/jcla.24385] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/09/2022] [Accepted: 03/21/2022] [Indexed: 12/20/2022] Open
Abstract
Background Toll‐like receptor 4 (TLR4) is considered to be involved in the pathogenesis and progression of atopic dermatitis (AD). In the present study, we evaluated the relationship between TLR4 gene polymorphisms and the susceptibility or severity of AD among Chinese Han children. Methods A total of 132 AD patients and 100 healthy controls were enrolled in this study. Four single‐nucleotide polymorphisms (rs19277914, rs11536891, rs7869402, and rs11536889) of the TLR4 gene were genotyped by multiplex PCR combined with next‐generation sequencing. Results Our results showed that a significantly reduced risk for AD was associated with C allele [p = 0.008; odds ratio (OR) = 0.41, C vs. T], TC genotype (p = 0.022; OR = 0.41, TC vs. TT), and TC + CC genotype (p = 0.010; OR = 0.39, TC + CC vs. TT) of TLR4 rs11536891. The frequency of the haplotype GCCG (rs1927914–rs11536891–rs7869402–rs11536889) in AD patients was lower than that in the controls (p = 0.010; OR = 0.38). Moreover, the results indicated that a higher risk of severe AD was related to the T allele (p = 0.019; OR = 2.97, T vs. C) and the TC genotype (p = 0.021; OR = 3.34, TC vs. CC) of TLR4 rs7869402. A risk haplotype of TLR4 (GTTG) was found in severe AD patients (p = 0.010; OR = 5.26). Conclusions Our data suggested that TLR4 rs11536891 polymorphism was associated with the susceptibility to AD in Chinese Han children. And TLR4 rs7869402 might confer the severity of pediatric AD patients.
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Affiliation(s)
- Jianrong Shi
- Department of Clinical LaboratoryThe Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center For Child HealthHangzhouChina
| | - Lin He
- Zhejiang University School of MedicineHangzhouChina
| | - Ran Tao
- Department of Clinical LaboratoryThe Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center For Child HealthHangzhouChina
| | - Huiwen Zheng
- Department of DermatologyThe Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center For Child HealthHangzhouChina
| | - Wei Li
- Department of Clinical LaboratoryThe Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center For Child HealthHangzhouChina
| | - Shuangshuang Huang
- Department of Clinical LaboratoryThe Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center For Child HealthHangzhouChina
| | - Yunling Li
- Department of DermatologyThe Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center For Child HealthHangzhouChina
| | - Shiqiang Shang
- Department of Clinical LaboratoryThe Children’s HospitalZhejiang University School of MedicineNational Clinical Research Center For Child HealthHangzhouChina
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Elloumi N, Tahri S, Fakhfakh R, Abida O, Mahfoudh N, Hachicha H, Marzouk S, Bahloul Z, Masmoudi H. Role of innate immune receptors TLR4 and TLR2 polymorphisms in systemic lupus erythematosus susceptibility. Ann Hum Genet 2022; 86:137-144. [PMID: 35128637 DOI: 10.1111/ahg.12458] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 01/22/2023]
Abstract
AIM Through their recognition of various bacterial cell wall components, TLR2 and TLR4 participate in the innate response and modulate the activation of adaptive immunity. Therefore, the genetic background of these receptors might play a crucial role in autoimmune diseases such as systemic lupus erythematosus (SLE). In this study, we investigated the possible association between polymorphisms within TLR2 and TLR4 genes with SLE susceptibility. MATERIAL AND METHODS A total of 100 SLE patients and 200 unrelated healthy controls of the Tunisian population were enrolled in the study.TLR4rs4986790, TLR4rs4986791, and TLR2rs5743708 genotyping were performed using a polymerase chain reaction-restriction fragment length polymorphism method. The number of guanine-thymine (GT) repeat microsatellite in the intron 2 of TLR2 gene was analyzed by sequencing. RESULTS We reported a lack of allelic and genotypic association between SNPs of TLR4 and TLR2 genes and SLE pathogenesis. No correlation was found with any SLE features. However, SLE susceptibility was associated with the GT repeat microsatellite polymorphism in the human TLR2 gene. Further subclassification of alleles into three subclasses revealed a significant association between the long-sized repeats ((GT) >23) and SLE. CONCLUSION Though the results showed the absence of genetic association of TLR4 and TLR2 SNPs with the risk of developing SLE, we have identified a protective association between the microsatellite polymorphism in intron 2 of the TLR2 gene and SLE. Functionally, these (GT)n repeats may confer modifying effects or susceptibility to certain inflammatory conditions.
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Affiliation(s)
- Nesrine Elloumi
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| | - Safa Tahri
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| | - Raouia Fakhfakh
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| | - Olfa Abida
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| | - Nadia Mahfoudh
- Immunology Department, Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Hend Hachicha
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
| | - Sameh Marzouk
- Internal Medicine Department, Hedi Chaker Hospital, University of Sfax, Sfax, Tunisia
| | - Zouhir Bahloul
- Internal Medicine Department, Hedi Chaker Hospital, University of Sfax, Sfax, Tunisia
| | - Hatem Masmoudi
- Research laboratory LR18/SP12 auto-immunity, cancer and immunogenetics, Immunology Department, Habib Bourguiba university Hospital, University of Sfax, Sfax, Tunisia
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Yu LM, Mao LQ, Wu CY, Ye W, Wang X. Chlorogenic acid improves intestinal barrier function by downregulating CD14 to inhibit the NF-κB signaling pathway. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104640] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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12
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Pan L, Niu Z, Gao Y, Wang L, Liu Z, Liu J, Sun J, Pei H. Silencing of CREB Inhibits HDAC2/TLR4/NF-κB Cascade to Relieve Severe Acute Pancreatitis-Induced Myocardial Injury. Inflammation 2021; 44:1565-1580. [PMID: 33725236 DOI: 10.1007/s10753-021-01441-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 02/06/2021] [Accepted: 02/19/2021] [Indexed: 02/08/2023]
Abstract
The purpose of the present study is to investigate the role of CREB in cardiomyocytes proliferation in regulation of HDAC2-dependent TLR4/NF-κB pathway in severe acute pancreatitis (SAP)-induced myocardial injury. The SAP rat model was developed by injecting sodium touracholate into SD rats and then infected with lentivirus vectors expressing sh-CREB in the presence/absence of LPS. The pathological alterations of rat pancreatic and cardiac tissues were observed by HE staining. TUNEL assay was used to study apoptosis of cardiomyocytes. Next, the loss- and gain-function assay was conducted in LPS-induced myocardial injury cardiomyocytes to define the roles of CREB, HDAC2, and TLR4 in cardiomyocyte proliferation, apoptosis, inflammation, and myocardial injury in vitro. ChIP assay was used to study the enrichment of CREB bound to HDAC2 promoter. RT-qPCR and Western blot analysis were used to detect the expressions of related mRNA and proteins in the NF-κB pathway, respectively. CREB was found to be overexpressed in both SAP tissues and cells. CREB directly bound to the promoter of HDAC2 and activated its expression. Overexpressed CREB or HDAC2 inhibited proliferation and promoted apoptosis of cardiomyocytes. Suppression of CREB inhibited the HDAC2/TLR4/NF-κB cascade to promote proliferation and inhibit apoptosis of cardiomyocytes. The in vitro results were validated in vivo experiments. Coherently, suppression of CREB can inhibit HDAC2/TLR4/NF-κB cascade to promote cardiomyocyte proliferation, thus ameliorating SAP-induced myocardial injury.
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Affiliation(s)
- Longfei Pan
- Department of Emergency, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xincheng District, 710004, Xi'an, Shaanxi Province, People's Republic of China.
| | - Zequn Niu
- Department of Emergency, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xincheng District, 710004, Xi'an, Shaanxi Province, People's Republic of China
| | - Yanxia Gao
- Department of Emergency, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xincheng District, 710004, Xi'an, Shaanxi Province, People's Republic of China
| | - Liming Wang
- Department of Emergency, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xincheng District, 710004, Xi'an, Shaanxi Province, People's Republic of China
| | - Zhong Liu
- Department of Emergency, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xincheng District, 710004, Xi'an, Shaanxi Province, People's Republic of China
| | - Jie Liu
- Department of Emergency, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xincheng District, 710004, Xi'an, Shaanxi Province, People's Republic of China
| | - Jiangli Sun
- Department of Emergency, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xincheng District, 710004, Xi'an, Shaanxi Province, People's Republic of China
| | - Honghong Pei
- Department of Emergency, the Second Affiliated Hospital of Xi'an Jiaotong University, No. 157 Xiwu Road, Xincheng District, 710004, Xi'an, Shaanxi Province, People's Republic of China
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13
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Asghari A, Nowras T, Tavakoli T, Fakharian T, Razavi FE, Soltaninejad E, Naseri M. Association between rs4986790 and rs4986791 Polymorphisms in TLR4 with Colorectal Cancer Risk in Iranian Population. RUSS J GENET+ 2021. [DOI: 10.1134/s1022795421060028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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14
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TLR3 agonists: RGC100, ARNAX, and poly-IC: a comparative review. Immunol Res 2021; 69:312-322. [PMID: 34145551 PMCID: PMC8213534 DOI: 10.1007/s12026-021-09203-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 05/10/2021] [Indexed: 12/21/2022]
Abstract
Toll-like receptors 3 (TLR3) have been broadly studied among all TLRs over the last few decades together with its agonists due to their contribution to cancer regression. These agonists undeniably have some shared characteristics such as mimicking dsRNA but pathways through which they exhibit antitumor properties are relatively diverse. In this review, three widely studied agonists RGC100, ARNAX, and poly-IC are discussed along with their structural and physiochemical differences including the signaling cascades through which they exert their actions. Comparison has been made to identify the finest agonist with maximum effectivity and the least side effect profile.
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15
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Noreen M, Imran M, Safi SZ, Bashir MA, Gul S, Alkhuriji AF, Aloma SY, Alharbi HM, Arshad M. Protective role of TIRAP functional variant against development of coronary artery disease. Saudi J Biol Sci 2021; 28:3548-3552. [PMID: 34121897 PMCID: PMC8176052 DOI: 10.1016/j.sjbs.2021.03.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/08/2021] [Accepted: 03/08/2021] [Indexed: 11/17/2022] Open
Abstract
Coronary artery disease (CAD) is the leading cause of sudden death worldwide. Inflammation is proved to be an important player in development of the CAD. Inflammation is directly regulated by the Toll like receptors (TLRs). Susceptibility of CAD is influenced by genetic variations within TLRs and the proteins involved in its signaling cascade. The TIRAP/MAL {TIR domain containing adaptor protein / MyD88 (myeloid differentiation primary response gene 88) adaptor-like} exhibits maximum genetic variations of all adaptor proteins involved in TLR signaling cascade. Susceptibility to a number of diseases can be influenced due to presence of S180L single nucleotide polymorphism (SNP) of TIRAP/MAL. This study was conducted to investigate the functional role of this well characterized S180L polymorphism on susceptibility to CAD among Pakistani patients. A total of 146 Pakistani CAD patients and 147 controls were genotyped by Amplification Refractory Mutation System-Polymerase Chain Reaction (ARMS-PCR) and the data was analyzed by using 2-tailed Chi square (x2 ) test. The p value ≤ 0.05 was considered to be significant. Significantly high frequency of homozygous L180L genotype was observed among healthy subjects as compared to the CAD patients [24 (16%) vs 7 (5%); x2 11.85; p = 0.003]. Moreover, the allele frequency of the minor allele; 180L was observed to be significantly higher among controls than the CAD patients, having same direction of association [156 (53%) vs 131 (45%); OR (95% CI) = 0.7198 (0.520-0.996); p < 0.05). Our results indicate that protective effect of L180L; a coding variant of TIRAP/MAL against CAD is discernible.
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Affiliation(s)
- Mamoona Noreen
- Atta ur Rehman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), H-12 sector, Islamabad, Pakistan
- Department of Zoology, The Women University Multan, Multan, Pakistan
| | - Muhammad Imran
- Department of Microbiology, University of Health Sciences, Lahore, Pakistan
| | - Sher Zaman Safi
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Muhammad Amjad Bashir
- Department of Plant Protection Faculty of Agricultural Sciences, Ghazi University, Dera Ghazi Khan, Pakistan
| | - Sana Gul
- Department of Biological Sciences National University of Medical Sciences (NUMS) Rawalpindi, Pakistan
| | - Afrah Fahad Alkhuriji
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Suliman Yousef Aloma
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Hanan Mualla Alharbi
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Muhammad Arshad
- Atta ur Rehman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), H-12 sector, Islamabad, Pakistan
- University of Education, Lahore, Pakistan
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16
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Huang SQ, Wen Y, Sun HY, Deng J, Zhang YL, Huang QL, Wang B, Luo ZL, Tang LJ. Abdominal paracentesis drainage attenuates intestinal inflammation in rats with severe acute pancreatitis by inhibiting the HMGB1-mediated TLR4 signaling pathway. World J Gastroenterol 2021; 27:815-834. [PMID: 33727772 PMCID: PMC7941863 DOI: 10.3748/wjg.v27.i9.815] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 12/14/2020] [Accepted: 02/01/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Our previous studies confirmed that abdominal paracentesis drainage (APD) attenuates intestinal mucosal injury in rats with severe acute pancreatitis (SAP), and improves administration of enteral nutrition in patients with acute pancreatitis (AP). However, the underlying mechanisms of the beneficial effects of APD remain poorly understood.
AIM To evaluate the effect of APD on intestinal inflammation and accompanying apoptosis induced by SAP in rats, and its potential mechanisms.
METHODS SAP was induced in male adult Sprague-Dawley rats by 5% sodium taurocholate. Mild AP was induced by intraperitoneal injections of cerulein (20 μg/kg body weight, six consecutive injections). Following SAP induction, a drainage tube connected to a vacuum ball was placed into the lower right abdomen of the rats to build APD. Morphological changes, serum inflammatory mediators, serum and ascites high mobility group box protein 1 (HMGB1), intestinal barrier function indices, apoptosis and associated proteins, and toll-like receptor 4 (TLR4) signaling molecules in intestinal tissue were assessed.
RESULTS APD significantly alleviated intestinal mucosal injury induced by SAP, as demonstrated by decreased pathological scores, serum levels of D-lactate, diamine oxidase and endotoxin. APD reduced intestinal inflammation and accompanying apoptosis of mucosal cells, and normalized the expression of apoptosis-associated proteins in intestinal tissues. APD significantly suppressed activation of the intestinal TLR4 signaling pathway mediated by HMGB1, thus exerting protective effects against SAP-associated intestinal injury.
CONCLUSION APD improved intestinal barrier function, intestinal inflammatory response and accompanying mucosal cell apoptosis in SAP rats. The beneficial effects are potentially due to inhibition of HMGB1-mediated TLR4 signaling.
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Affiliation(s)
- Shang-Qing Huang
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Yi Wen
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Hong-Yu Sun
- Basic Medical Laboratory, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Jie Deng
- Department of Clinical Pharmacy, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Yao-Lei Zhang
- Basic Medical Laboratory, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Qi-Lin Huang
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Bing Wang
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Zhu-Lin Luo
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
| | - Li-Jun Tang
- Department of General Surgery & Pancreatic Injury and Repair Key Laboratory of Sichuan Province, The General Hospital of Western Theater Command (Chengdu Military General Hospital), Chengdu 610083, Sichuan Province, China
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Donor UNC-93 Homolog B1 genetic polymorphism predicts survival outcomes after unrelated bone marrow transplantation. Genes Immun 2021; 22:35-43. [PMID: 33627833 PMCID: PMC7903020 DOI: 10.1038/s41435-021-00122-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 01/19/2021] [Accepted: 01/27/2021] [Indexed: 02/01/2023]
Abstract
UNC-93 homolog B1 (UNC93B1) is a key regulator of toll-like receptors (TLRs), pattern recognition receptors that sense invading pathogens and manage the innate immune response and deliver them from the endoplasmic reticulum to their respective endosomal signaling compartments. Several types of TLRs are known to contribute to the inflammatory process after allogeneic hematopoietic stem cell transplantation (SCT), so UNC93B1 might play integral roles there. We investigated the influence of the UNC93B1 single-nucleotide polymorphism (SNP) rs308328 (T>C) on transplant outcomes in a cohort of 237 patients undergoing unrelated HLA-matched bone marrow transplantation (BMT) for hematologic malignancies through the Japan Marrow Donor Program. The donor UNC93B1 C/C genotype was associated with a better 3-year overall survival than the donor UNC93B1 C/T or T/T genotype. An analysis of the UNC93B1 rs308328 genotype may therefore be useful for selecting the donor, estimating the prognosis, and creating therapeutic strategies after allogeneic SCT.
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Toll-like receptor 4 regulates intestinal fibrosis via cytokine expression and epithelial-mesenchymal transition. Sci Rep 2020; 10:19867. [PMID: 33199767 PMCID: PMC7670421 DOI: 10.1038/s41598-020-76880-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 10/29/2020] [Indexed: 02/08/2023] Open
Abstract
Intestinal fibrosis induced by chronic and recurrent colitis, which is exacerbated by bowel stenosis, stricture, and obstruction, is challenging to treat. Toll-like receptor 4 (TLR4) stimulates innate and acquired immunity in response to specific microbial components, but the role of TLR4 in intestinal fibrosis is largely unknown. We investigated its role in intestinal fibrosis using not only a murine fibrosis model but also human myofibroblasts and intestinal epithelial cells. Colon fibrosis was induced in TLR4-deficient (TLR4−/−) mice and its wild-type counterparts with 3% dextran sulfate sodium. Absence of TLR4 gene attenuated chronic inflammation and colonic macrophages infiltration; intestinal fibrosis and collagen deposition were suppressed. Also, the production of tumor necrosis factor-α, interleukin-12p40, and transforming growth factor-β was reduced in TLR4-deficient peritoneal macrophages. TLR4 was silenced in CCD-18Co cells by small interfering RNA (siRNA), and matrix metalloproteinase-1, tissue inhibitor of metalloproteinase, and collagen α1 expression was evaluated. Role of TLR4 in epithelial-mesenchymal transition (EMT) was evaluated in HCT116 cells. Suppression of TLR4 transcription by siRNAs affected myofibroblasts activity, collagen synthesis, and EMT in the human cancer cell line. Thus, we suggest that TLR4 can be an essential mediator in intestinal chronic inflammation and fibrosis, indicating that TLR4 signaling is a potential therapeutic target for intestinal fibrosis.
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The Role of TLR-4 and Galectin-3 Interaction in Acute Pancreatitis. SERBIAN JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2020. [DOI: 10.2478/sjecr-2019-0067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Toll-like receptor-4 (TLR-4) is a member of evolutionarily conserved type I transmembrane proteins that can initiate sterile inflammatory cascade in the pancreas. Expression of TLR-4 is up-regulated in pancreatic tissue, as well as, on peripheral blood innate immune cells in human and experimental models of acute pancreatitis. TLR-4 plays important pro-inflammatory roles during development of acute pancreatitis: it recognize alarmins released from injured acinar cells and promotes activation and infiltration of innate immune cells after the premature and intraacinar activation of tripsinogen. Galectin-3 is β-galactoside-binding lectin that plays pro-inflammatory roles in a variety autoimmune diseases, acute bacterial infections and during tumorigenesis. It is reported that Galectin-3 is alarmin in experimental models of neuroinflammation and binds to TLR-4 promoting the pro-inflammatory phenotype of microglia. Also, in experimental model of acute pancreatitis Galectin-3 is colocalized with TLR-4 on innate inflammatory cells resulted in enhanced production of inflammatory cytokines, TNF-α and IL-1β, increased infiltration of pro-inflammatory N1 neutrophils, macrophages and dendritic cells and increased damage of pancreatic tissue. This review paper discusses the role of TLR-4/Gal-3 axis in the pathogenesis of acute pancreatitis.
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20
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Geng C, Guo Y, Wang C, Cui C, Han W, Liao D, Jiang P. Comprehensive Evaluation of Lipopolysaccharide-Induced Changes in Rats Based on Metabolomics. J Inflamm Res 2020; 13:477-486. [PMID: 32904659 PMCID: PMC7457572 DOI: 10.2147/jir.s266012] [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: 06/03/2020] [Accepted: 08/01/2020] [Indexed: 12/13/2022] Open
Abstract
Purpose Substantial evidence indicates that lipopolysaccharide (LPS) exposure can lead to systemic inflammatory response syndrome (SIRS) and multiple organ failure. Previous metabolomic studies have mainly focused on LPS-induced depression or hepatic and renal effects. However, no comprehensive metabolomics-based analysis of the serum, liver, kidney, hippocampus, and heart following exposure to LPS has been undertaken to date. Material and Methods Male Sprague-Dawley rats were randomly allocated to a control and a LPS-treated group (n=8). LPS for 2 weeks (0.5 mg/kg every other day) was given via intraperitoneal injection. Gas chromatography-mass spectrometry (GC-MS) was used for metabolite determination, while multivariate statistical analysis was performed to identify differentially expressed metabolites between the two groups. Results Our study revealed that 24, 13, 12, 7, and 12 metabolites were differentially expressed between the LPS treatment group and the control group in the serum, liver, kidney, hippocampus, and heart, respectively. We further identified that these metabolic changes were mainly involved with aminoacyl-tRNA biosynthesis; glutathione metabolism; glyoxylate and dicarboxylate metabolism; glycine, serine, and threonine metabolism; arginine biosynthesis; bile acid biosynthesis; and glycerolipid metabolism. Conclusion We have systematically elucidated the metabolic changes underlying LPS-induced SIRS, thereby providing insight into the mechanisms associated with these alterations.
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Affiliation(s)
- Chunmei Geng
- Department of Pharmacy, Jining First People's Hospital, Jining Medical University, Jining 272000, People's Republic of China
| | - Yujin Guo
- Department of Pharmacy, Jining First People's Hospital, Jining Medical University, Jining 272000, People's Republic of China
| | - Changshui Wang
- Department of Clinical Translational Medicine, Jining Life Science Center, Jining 272000, People's Republic of China
| | - Changmeng Cui
- Department of Neurosurgery, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining 272000, People's Republic of China
| | - Wenxiu Han
- Department of Pharmacy, Jining First People's Hospital, Jining Medical University, Jining 272000, People's Republic of China
| | - Dehua Liao
- Department of Pharmacy, Hunan Cancer Hospital, Central South University, Changsha 410011, People's Republic of China
| | - Pei Jiang
- Department of Pharmacy, Jining First People's Hospital, Jining Medical University, Jining 272000, People's Republic of China
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Rossi O, Citiulo F, Mancini F. Outer membrane vesicles: moving within the intricate labyrinth of assays that can predict risks of reactogenicity in humans. Hum Vaccin Immunother 2020; 17:601-613. [PMID: 32687736 PMCID: PMC7899674 DOI: 10.1080/21645515.2020.1780092] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Outer membrane vesicles (OMV) are exosomes naturally released from the surface of Gram-negative bacteria. Since the ’80s, OMVs have been proposed as powerful vaccine platforms due to their intrinsic self-adjuvanticity and ability to present multiple antigens in natural conformation. However, the presence of several pathogen-associated molecular patterns (PAMPs), especially lipid A, has raised concerns about potential systemic reactogenicity in humans. Recently, chemical and genetic approaches allowed to efficiently modulate the balance between reactogenicity and immunogenicity for the use of OMV in humans. Several assays (monocyte activation test, rabbit pyrogenicity test, limulus amebocyte lysate, human transfectant cells, and toxicology studies) were developed to test, with highly predictive potential, the risk of reactogenicity in humans before moving to clinical use. In this review, we provide a historical perspective on how different assays were and can be used to successfully evaluate systemic reactogenicity during clinical development and after licensure.
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Affiliation(s)
- Omar Rossi
- GSK Vaccines Institute for Global Health S.r.l (GVGH) , Siena, Italy
| | - Francesco Citiulo
- GSK Vaccines Institute for Global Health S.r.l (GVGH) , Siena, Italy
| | - Francesca Mancini
- GSK Vaccines Institute for Global Health S.r.l (GVGH) , Siena, Italy
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Bodofsky S, Merriman TR, Thomas TJ, Schlesinger N. Advances in our understanding of gout as an auto-inflammatory disease. Semin Arthritis Rheum 2020; 50:1089-1100. [PMID: 32916560 DOI: 10.1016/j.semarthrit.2020.06.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/01/2020] [Accepted: 06/22/2020] [Indexed: 12/12/2022]
Abstract
Gout, the most common inflammatory arthritis, is the result of hyperuricemia and inflammation induced by monosodium urate (MSU) crystal deposition. However, most people with hyperuricemia will never develop gout, implying a molecular-genetic contribution to the development of gout. Recent genomic studies reveal links between certain genetic variations and gout. We highlight recent advances in our understanding of gout as an auto-inflammatory disease. We review the auto-inflammatory aspects of gout, including the inflammasome and thirteen gout-associated inflammatory-pathway genes and associated comorbidities. This information provides important insights into emerging immune-modulating targets in the management of gout, and future novel therapeutic targets in gout treatment. Cumulatively, this has important implications for treating gout as an auto-inflammatory disease, as opposed to a purely metabolic disease.
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Affiliation(s)
- Shari Bodofsky
- Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, United States.
| | - Tony R Merriman
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | - T J Thomas
- Division of Rheumatology, Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, United States
| | - Naomi Schlesinger
- Division of Rheumatology, Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, United States
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Chen Z, Zhao N, Dai Y, Chen Z. Correlation between TLR4 gene polymorphism and severe enterovirus 71 infection. J Infect Chemother 2020; 26:1015-1020. [PMID: 32473847 DOI: 10.1016/j.jiac.2020.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/23/2020] [Accepted: 05/08/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Enterovirus 71 (EV71) infection resulted in high mortality and disability in children. Immune response deficiency and cytokine genetic predispositions were associated with the severity of EV71 infection. We aim to evaluate the association between TLR4 gene polymorphisms and severity of EV71 infection in Chinese children. METHODS TLR4 gene polymorphisms were detected through improved multiplex ligation detection reaction technology. TLR4 expression was measured by Real-Time reverse transcriptase PCR and flow cytometry. The plasma levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were analyzed by enzyme-linked immunosorbent assay. RESULTS The frequency of rs10759932CC genotype and the C allele was significantly higher in cases with severe EV71 infection than those with mild infection. The levels of TLR4, serum TNF-α and IL-6 in cases with rs10759932CC genotype were also significantly elevated when compared to those with TT genotypes. CONCLUSIONS The rs10759932 polymorphism in TLR4 was associated with the severity of EV71 infection. The C allele of rs10759932 may be one of the risk factors of severe EV71 infection in Chinese children.
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Affiliation(s)
- Zhenzhen Chen
- Department of Pediatrics, Qingdao Women and Children's Hospital, Qingdao, 266000, China; Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, 266000, China
| | - Na Zhao
- Department of Pediatrics, Qingdao Women and Children's Hospital, Qingdao, 266000, China
| | - Yulong Dai
- Department of Clinical Laboratory, Qingdao Women and Children's Hospital, Qingdao, 266000, China
| | - Zongbo Chen
- Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, 266000, China.
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Korneev KV, Sviriaeva EN, Mitkin NA, Gorbacheva AM, Uvarova AN, Ustiugova AS, Polanovsky OL, Kulakovskiy IV, Afanasyeva MA, Schwartz AM, Kuprash DV. Minor C allele of the SNP rs7873784 associated with rheumatoid arthritis and type-2 diabetes mellitus binds PU.1 and enhances TLR4 expression. Biochim Biophys Acta Mol Basis Dis 2019; 1866:165626. [PMID: 31785408 DOI: 10.1016/j.bbadis.2019.165626] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 11/08/2019] [Accepted: 11/26/2019] [Indexed: 12/19/2022]
Abstract
Toll-like receptor 4 (TLR4) is an innate immunity receptor predominantly expressed on myeloid cells and involved in the development of various diseases, many of them with complex genetics. Here we present data on functionality of single nucleotide polymorphism rs7873784 located in the 3'-untranslated region (3'-UTR) of TLR4 gene and associated with various pathologies involving chronic inflammation. We demonstrate that TLR4 3'-UTR strongly enhanced the activity of TLR4 promoter in U937 human monocytic cell line while minor rs7873784(C) allele created a binding site for transcription factor PU.1 (encoded by SPI1 gene), a known regulator of TLR4 expression. Increased binding of PU.1 further augmented the TLR4 transcription while PU.1 knockdown or complete disruption of the PU.1 binding site abrogated the effect. We hypothesize that additional functional PU.1 site may increase TLR4 expression in individuals carrying minor C variant of rs7873784 and modulate the development of certain pathologies, such as rheumatoid arthritis and type-2 diabetes mellitus.
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Affiliation(s)
- Kirill V Korneev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Ekaterina N Sviriaeva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Nikita A Mitkin
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alisa M Gorbacheva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; Biological Faculty, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Aksinya N Uvarova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; Biological Faculty, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Alina S Ustiugova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; Biological Faculty, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Oleg L Polanovsky
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Ivan V Kulakovskiy
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; Vavilov Institute of General Genetics, Russian Academy of Sciences, 119991 Moscow, Russia; Institute of Mathematical Problems of Biology, Keldysh Institute of Applied Mathematics, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Marina A Afanasyeva
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Anton M Schwartz
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Dmitry V Kuprash
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia; Biological Faculty, Lomonosov Moscow State University, 119234 Moscow, Russia.
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25
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Intestinal mucosal injury induced by obstructive jaundice is associated with activation of TLR4/TRAF6/NF-κB pathways. PLoS One 2019; 14:e0223651. [PMID: 31671112 PMCID: PMC6822728 DOI: 10.1371/journal.pone.0223651] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 09/25/2019] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVES To investigate the role of TLR4/TRAF6/NF-κB pathways in intestinal mucosal injury induced by obstructive jaundice (OJ). METHODS A total of 100 male C57BL/6J mice were randomly assigned to two groups: (I) sham operation (SH); (II) OJ. The mice were sacrificed before operation and on the 1st, 3rd, 5th and 7th day after operation. The blood and terminal ileum were simultaneously collected under the aseptic condition for further detection. RESULTS In the SH group, TLR4 protein and mRNA rarely expressed in the intestinal mucosa of the mice and there were no significant differences at different time points (p>0.05). By contrast, in the OJ group TLR4 protein (0.12±0.06, 0.16±0.08, 0.27±0.10, 0.35±0.12 and 0.41±0.13, respectively) and mRNA (0.49±0.19, 0.62±0.23, 0.98±0.32, 1.42±0.41 and 1.72±0.49, respectively) increased gradually with the extension of time (p<0.05). Also in the OJ group, the levels of DAO and endotoxin in plasma as well as the expressions of NF-κB and caspase-3 increased gradually with the extension of time, showing positive correlation with the expression of TLR4 (p<0.05). CONCLUSIONS The expression of TLR4 was significantly up-regulated in the distal ileum of mice with OJ. Activation of the TLR4/TRAF6/NF-κB pathways was involved in the occurrence and development of intestinal mucosal injury and endotoxemia in mice with OJ.
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Semlali A, Al Mutairi M, Oqla Alanazi I, Awad Aljohi H, Reddy Parine N, Alhadheq A, Al-Jafari AA, Mobeirek AF, Al Amri A, Shaik JP, Filali FZ, Alanazi M. Toll-like receptor 4 polymorphisms in Saudi population with cardiovascular diseases. Mol Genet Genomic Med 2019; 7:e852. [PMID: 31328431 PMCID: PMC7650605 DOI: 10.1002/mgg3.852] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 06/25/2019] [Accepted: 06/27/2019] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Toll-like receptors play a substantial role in innate immunity and the effects of TLR4 genetic variants on cardiovascular diseases are still largely unknown. Therefore, we aimed to investigate the effects of TLR4 polymorphisms on cardiovascular diseases risk in the Saudi population. METHODS Three tag single-nucleotide polymorphisms (rs2770150, rs10759931, and rs4986790) in TLR4 were studied on 222 unrelated patients with cardiovascular diseases and 190 healthy volunteers. RESULTS We found that, in patients over 60 years old, the frequency of the TT genotype in rs2770150 and the variant allele G in rs10759931 were higher compared to the control group. Based on gender, the genotype frequency of rs2770150 increases the risk for cardiovascular diseases in female patients by 3.6-fold. The allele frequency for the G allele of rs10759931 increased the risk for CVDs in male patients by more than 1.5-fold. Furthermore, the genotype frequency of rs2770150 had a significant association with cardiovascular diseases in patients without hypertension and G allele of rs10759931 significantly increased the risk of cardiovascular diseases in patients that smoked. After Bonferroni correction only patients without hypertension showed significant risk of CVD with rs2770150. CONCLUSION A deeper understanding of the genetic variability of TLR4 will enable us to better identification of biomarkers for early detection and prognosis, and also enhance the decision-making process of treatments for cardiovascular diseases.
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Affiliation(s)
- Abdelhabib Semlali
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC, Canada.,Genome Research Chair, Department of Biochemistry, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Mikhlid Al Mutairi
- Zoology Department, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Ibrahim Oqla Alanazi
- National Center for Genomics Research (NCGR), King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Hasan Awad Aljohi
- National Center for Genomics Research (NCGR), King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Narasimha Reddy Parine
- Genome Research Chair, Department of Biochemistry, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Abdullah Alhadheq
- Zoology Department, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Abdulaziz A Al-Jafari
- Department of Biochemistry, Faculty of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Abdulelah F Mobeirek
- Cardiac Sciences Department, Faculty of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Abdullah Al Amri
- Genome Research Chair, Department of Biochemistry, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Jilani P Shaik
- Genome Research Chair, Department of Biochemistry, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
| | | | - Mohammad Alanazi
- Genome Research Chair, Department of Biochemistry, College of Science King Saud University, Riyadh, Kingdom of Saudi Arabia
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Petrkova J, Borucka J, Kalab M, Klevcova P, Michalek J, Taborsky M, Petrek M. Increased Expression of miR-146a in Valvular Tissue From Patients With Aortic Valve Stenosis. Front Cardiovasc Med 2019; 6:86. [PMID: 31294031 PMCID: PMC6606704 DOI: 10.3389/fcvm.2019.00086] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 06/06/2019] [Indexed: 12/31/2022] Open
Abstract
miR-146a has been implicated in the regulation of the immune response as well as in inflammatory process of atherosclerosis. In the present study, we have investigated the expression of miR-146a and its targets, TLR4 a IRAK1, in aortic valve stenosis. A total of 58 patients with aortic stenosis (non- and atherosclerotic; tissue obtained during standard aortic valve replacement) were enrolled. The relative expression of mir-146a was higher in valvular tissue from patients with atherosclerosis compared to those without atherosclerosis (p = 0.01). Number of the IRAK1 and TLR4 transcripts did not differ between the investigated groups. There was a trend toward elevation of miR-146a expression in context of inflammatory infiltrate observed in the valvular tissue from patients with atherosclerosis (p = 0.06). In conclusion, in line with the acknowledged role of miR-146a in atherosclerotic inflammation, our data suggest it may be extended to the specific location of aortic valves in aortic stenosis.
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Affiliation(s)
- Jana Petrkova
- Department of Pathological Physiology, Faculty of Medicine Dentistry, Palacky University, Olomouc, Czechia.,Internal Medicine I - Cardiology, Palacky University and University Hospital, Olomouc, Czechia
| | - Jana Borucka
- Department of Pathological Physiology, Faculty of Medicine Dentistry, Palacky University, Olomouc, Czechia.,Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacky University, Olomouc, Czechia
| | - Martin Kalab
- Department of Cardiac Surgery, Palacky University and University Hospital, Olomouc, Czechia
| | - Petra Klevcova
- Department of Pathological Physiology, Faculty of Medicine Dentistry, Palacky University, Olomouc, Czechia
| | - Jaroslav Michalek
- Department of Clinical and Molecular Pathology, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czechia
| | - Milos Taborsky
- Internal Medicine I - Cardiology, Palacky University and University Hospital, Olomouc, Czechia
| | - Martin Petrek
- Department of Pathological Physiology, Faculty of Medicine Dentistry, Palacky University, Olomouc, Czechia.,Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacky University, Olomouc, Czechia.,Laboratory of Cardiogenomics, University Hospital Olomouc, Olomouc, Czechia
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Zaharieva ET, Kamenov ZA, Savov AS. TLR4 polymorphisms seem not to be associated with prediabetes and type 2 diabetes but predispose to diabetic retinopathy; TLR4 polymorphisms in glucose continuum. Endocr Regul 2019; 51:137-144. [PMID: 28858846 DOI: 10.1515/enr-2017-0014] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES Compared to type 1 diabetes, the role of the immune and autoimmune pathogenetic mechanisms is much less studied in the type 2 diabetes. Toll-like receptors 4 (TLR4) have a leading role in inflammation, insulin resistance, and vascular damage. This study aimed to analyze the relationship between the polymorphisms in TLR4 gene and different stages in the glucose continuum from prediabetes to the type 2 diabetes and chronic microvascular complications. MATERIALS AND METHODS The study included 113 patients with the type 2 diabetes, 29 participants with prediabetes, and 28 controls. Polymerase chain reaction (PCR) was used for genotyping Asp299Gly and Thr399Ile polymorphism, followed by restriction analysis. RESULTS The difference in the genotype frequency for both polymorphisms in patients with the type 2 diabetes or prediabetes compared to that in controls was not significant. Patients with heterozygous genotype of Asp299Gly polymorphism had a higher prevalence of diabetic retinopathy (42.9%) than participants with homozygous genotype (9.0%) (OR [95%CI]=7.61 [1.41-41.08]; p=0.018). No association was established for diabetic polyneuropathy and nephropathy. Prevalence of chronic diabetes complications was not related to Thr399Ile polymorphism. CONCLUSION Our study demonstrates that Asp299Gly and Thr399Ile polymorphisms seem not to be associated with the type 2 diabetes and prediabetes but Asp299Gly may contribute to diabetic retinopathy predisposition.
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Kawamoto S, Masutani R, Kurata K, Shima E, Iwatani Y, Takubo T. Toll-like receptor 4 promoter polymorphisms in a familial mediterranean fever patient with asymptomatic bacteriuria. Clin Case Rep 2019; 7:155-159. [PMID: 30656032 PMCID: PMC6333084 DOI: 10.1002/ccr3.1941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 11/06/2018] [Indexed: 11/13/2022] Open
Abstract
A periodic fever, due to inherited inflammatory disorders, can be misdiagnosed as a common infection, when a possible pathogen is detected from a patient. TLR4 SNPs that are responsible for asymptomatic bacteriuria might disturb the pathophysiology of familial Mediterranean fever without MEFV mutations.
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Affiliation(s)
- Shinichiro Kawamoto
- Department of Transfusion Medicine and Cell TherapyKobe University HospitalHyogoJapan
| | - Ryota Masutani
- Department of Central Clinical LaboratoryOsaka Medical College HospitalOsakaJapan
- Department of Biomedical Informatics, Division of Health SciencesOsaka University Graduate School of MedicineOsakaJapan
| | - Keiji Kurata
- Department of Medical Oncology/HematologyKobe University HospitalHyogoJapan
| | - Etsuko Shima
- Department of General MedicineKobe Central HospitalHyogoJapan
| | - Yoshinori Iwatani
- Department of Biomedical Informatics, Division of Health SciencesOsaka University Graduate School of MedicineOsakaJapan
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30
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Babaloo AR, Shirmohammadi A, Sandoghchian S, Kamalzadeh A, Ghasemi S. Evaluation of the effect of IL-36γ expression on chronic periodontitis by enhancing the MAPK and TLR4 signaling pathways: A basic research. J Dent Res Dent Clin Dent Prospects 2018; 12:159-165. [PMID: 30443300 PMCID: PMC6231148 DOI: 10.15171/joddd.2018.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 07/28/2018] [Indexed: 11/30/2022] Open
Abstract
Background. Periodontitis is an infectious and inflammatory disease of the supporting tissues of the tooth caused by specific
microorganisms or a group of microorganisms and, if not treated, leads to progressive degradation of the supporting tissues
and subsequent loss of the teeth affected. The aim of this study was to evaluate the effects of IL-36γ on periodontitis by
enhancing the TLR4 and MAPK signaling pathways.
Methods. In this pilot study, 50 patients with generalized moderate-to-severe chronic periodontitis and 50 individuals with
healthy periodontium, who were candidates for crown lengthening (CL), were selected based on inclusion criteria. The tissue
samples were taken during pocket depth surgery (for the test group) and CL surgery (for the control group). The macrophage
cells of the inflammatory tissues were extracted and stimulated by TLR4 proteins in a time-dependent manner; then IL-36γ
levels in macrophages were investigated. Data were analyzed using descriptive statistics (means ± standard deviations and
frequency percentages). Repeat measurement test was used to compare IL36γ expression in MAPK and TLR4 pathways at
different time intervals. ANCOVA was used to compare IL36γ expression at different time intervals between the two pathways.
Statistical analysis was performed using SPSS 17 at a significance level of P<0.05.
Results. The results of the current study showed a significant relation between TLR4 and IL-36γ (P<0.001); in tissues with
generalized moderate-to-severe chronic periodontitis, there was a significant relation between the condition and IL-36γ
(P<0.0001). This study also showed that TLR4 and MAPK levels increased in the presence of IL-36γ.
Conclusion. According to the present study, it was concluded that IL-36γ concentrations increased in periodontitis, which
could trigger MAPK and TLR4 pathways.
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Affiliation(s)
- Amir Reza Babaloo
- Oral and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Periodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Adileh Shirmohammadi
- Oral and Periodontal Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Periodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Siamak Sandoghchian
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Shima Ghasemi
- Department of Prosthodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Li P, Wang H, Zhao X, Gou Z, Liu R, Song Y, Li Q, Zheng M, Cui H, Everaert N, Zhao G, Wen J. Allelic variation in TLR4 is linked to resistance to Salmonella Enteritidis infection in chickens. Poult Sci 2018; 96:2040-2048. [PMID: 28339850 DOI: 10.3382/ps/pex010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 12/21/2016] [Indexed: 12/19/2022] Open
Abstract
Salmonella Enteritidis (SE) is a foodborne pathogen that negatively affects both animal and human health. Polymorphisms of the TLR4 gene may affect recognition by Toll-like receptor 4 (TLR4) of bacterial lipopolysaccharide (LPS), leading to differences in host resistance to pathogenic infections. The present study has investigated polymorphic loci of chicken TLR4 (ChTLR4) in ten chicken breeds, electrostatic potentials of mutant structures of TLR4, and a linkage analysis between allelic variation and survival ratio to infection with SE in specific-pathogen-free (SPF) White Leghorns. A total of 19 Single Nucleotide Polymorphisms (SNPs), of which 10 were novel, were found in chicken breeds. Seven newly identified amino acid variants (C68G, G674A, G782A, A896T, T959G, T986A, and A1104C) and previously reported important mutations (G247A, G1028A, C1147T, and A1832G) were demonstrated in the extracellular domain of the ChTLR4 gene. Significant changes in surface electrostatic potential of the ectodomain of TLR4, built by homology modeling, were observed at the Glu83Lys (G247A), Arg298Ser (A896T), Ser368Arg (A1104C), and Gln611Arg (A1832G) substitutions. Linkage analysis showed that one polymorphic locus G247A of TLR4 gene, common in all breeds examined, was significantly associated with increased resistance to SE in SPF White Leghorns chicks (log-rank P-value = 0.04). The genotypes from A1832G SNPs did not show statistically significant survival differences. This study has provided the first direct evidence that G247A substitution in ChTLR4 is associated with increased resistance to Salmonella Enteritidis.
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Affiliation(s)
- Peng Li
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China.,University of Liège, Gembloux Agro-Bio Tech, Precision Livestock and Nutrition Unit, Passage des Déportés 2, 5030 Gembloux, Belgium
| | - Huihua Wang
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, 100093, China
| | - Xingwang Zhao
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Zhongyong Gou
- Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Ranran Liu
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yongmei Song
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Qinghe Li
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Maiqing Zheng
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Huanxian Cui
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Nadia Everaert
- University of Liège, Gembloux Agro-Bio Tech, Precision Livestock and Nutrition Unit, Passage des Déportés 2, 5030 Gembloux, Belgium
| | - Guiping Zhao
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Jie Wen
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
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Pan LF, Yu L, Wang LM, He JT, Sun JL, Wang XB, Wang H, Bai ZH, Feng H, Pei HH. Augmenter of liver regeneration (ALR) regulates acute pancreatitis via inhibiting HMGB1/TLR4/NF-κB signaling pathway. Am J Transl Res 2018; 10:402-410. [PMID: 29511434 PMCID: PMC5835805 DOI: pmid/29511434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/17/2018] [Indexed: 02/08/2023]
Abstract
This research aimed to explore the effect of augmenter of liver regeneration (ALR) in acute pancreatitis (AP) of mice and the underlying mechanism. Caerulein were given to mice to get AP models. AP mice were given saline, ALR plasmids or negative control plasmids. Then, pancreas tissues were fixed and stained for histological examination. The levels of serum amylase, serum lipase, MPO, HMGB1, TNF-α, IL-1β as well as MCP-1 were detected by ELISA assay. The mRNA levels of TLR4, p65, IκBα, iNOS, COX-2 and GAPDH were examined by RT-qPCR. The protein levels of HMGB1, TLR4, MD2, MyD88, IκBα and GAPDH were detected by western blotting. ALR decreased serum amylase as well as lipase levels and alleviated the histopathological alterations of the pancreas in AP mice. ALR decreased the MPO activity of pancreas in AP Mice. ALR decreased the HMGB1/TLR4 signaling pathway in AP Mice. ALR decreased pancreas IL-1β and MCP-1 in AP mice, and also decreased plasma TNF-α and IL-1β in AP mice. ALR attenuated the cerulein-caused increase in p65 mRNA and protein levels, but had no effects on mRNA and protein levels of IκBα. The AP mice significantly promoted the mRNA levels of iNOS and COX-2 that was inhibited by ALR. HNE formation was also increased in AP mice, but it was decreased by ALR. ALR alleviates acute pancreatitis by inhibiting HMGB1/TLR4/NF-κB signaling pathway. It is promising to alleviate the syndromes of patients with acute via targeting ALR.
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Affiliation(s)
- Long-Fei Pan
- Department of Emergency Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong UniversityXi'an 710004, Shaanxi, China
| | - Lei Yu
- Xi'an Medical CollegeXi'an 710021, Shaanxi, China
| | - Li-Ming Wang
- Department of Emergency Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong UniversityXi'an 710004, Shaanxi, China
| | - Jun-Tao He
- Department of Clinical Laboratory, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong UniversityXi'an 710004, Shaanxi, China
| | - Jiang-Li Sun
- Department of Emergency Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong UniversityXi'an 710004, Shaanxi, China
| | - Xiao-Bo Wang
- Department of Emergency Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong UniversityXi'an 710004, Shaanxi, China
| | - Hai Wang
- Department of Emergency Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong UniversityXi'an 710004, Shaanxi, China
| | - Zheng-Hai Bai
- Department of Emergency Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong UniversityXi'an 710004, Shaanxi, China
| | - Hui Feng
- Department of Emergency Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong UniversityXi'an 710004, Shaanxi, China
| | - Hong-Hong Pei
- Department of Emergency Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an Jiaotong UniversityXi'an 710004, Shaanxi, China
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Tao Z, Meng X, Han YQ, Xue MM, Wu S, Wu P, Yuan Y, Zhu Q, Zhang TJ, Wong CCL. Therapeutic Mechanistic Studies of ShuFengJieDu Capsule in an Acute Lung Injury Animal Model Using Quantitative Proteomics Technology. J Proteome Res 2017; 16:4009-4019. [PMID: 28880561 DOI: 10.1021/acs.jproteome.7b00409] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
ShuFengJieDu capsule (SFJDC), a traditional Chinese medicine (TCM) that contains eight medicinal herbs, has been extensively utilized for the treatment of acute lung injury (ALI) and respiratory infections for more than 30 years in China. SFJDC has also been listed in the official guidelines of the China Food and Drug Administration (CFDA) due to its stable clinical manifestations. However, the underlying mechanism of SFJDC during ALI repair remains unclear. In the present study, we explored the protective and therapeutic mechanisms of SFJDC in a rat model by performing qualitative and label-free quantitative proteomics studies. After establishing lipopolysaccharide (LPS)-induced ALI rat models, we profiled macrophage cells isolated from freshly resected rat lung tissues derived from ALI models and ALI rat lung tissue sections using a high performance liquid chromatography-mass spectrometry (HPLC-MS/MS) shotgun proteomics approach to identify changes in the expression levels of proteins of interest. On the basis of our proteomics results and the results of a protein dysregulation analysis of ALI rat lung tissues and rat lung macrophages, AKT1 was selected as a putative key factor that may play an important role in mediating the effects of SFJDC treatment during ALI progression. Follow-up validation studies demonstrated that AKT1 expression effectively regulates various ALI-related molecules, and Gene Ontology analysis indicated that SFJDC-treated ALI rat macrophages were influenced by AKT1-based networks. Gain- and loss-of-function analyses following lentivirus-AKT1 or lentivirus-si-AKT1 infection in macrophages also indicated that AKT1 was essential for the development of ALI due to its ability to regulate oxidative stress, apoptosis, or inflammatory responses. In summary, SFJDC effectively modulated anti-inflammatory and immunomodulation activity during ALI, potentially due to AKT1 regulation during ALI progression. New insights into SFJDC mechanisms may facilitate the development of novel pharmaceutical strategies to control the expression of inflammatory factors.
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Affiliation(s)
| | - Xia Meng
- National Center for Protein Science (Shanghai), Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences , Shanghai 201210, China
| | - Yan-Qi Han
- Tianjin Institute of Pharmaceutical Research , Tianjin 300193, China
| | | | - Shifei Wu
- National Center for Protein Science (Shanghai), Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences , Shanghai 201210, China
| | - Ping Wu
- National Center for Protein Science (Shanghai), Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences , Shanghai 201210, China
| | | | - Qiang Zhu
- Anhui Jiren Pharmaceutical Co., Ltd., Bozhou 236800, China
| | - Tie-Jun Zhang
- Tianjin Institute of Pharmaceutical Research , Tianjin 300193, China
| | - Catherine C L Wong
- National Center for Protein Science (Shanghai), Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences , Shanghai 201210, China
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Xu H, Jiang G, Shen H, Li W, Mao J, Pan Y. Association of TLR4 gene polymorphisms with childhood Henoch-Schönlein purpura in a Chinese population. Rheumatol Int 2017; 37:1909-1915. [PMID: 28905155 DOI: 10.1007/s00296-017-3815-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 09/06/2017] [Indexed: 02/07/2023]
Abstract
Recent studies demonstrated that aberrant activation of Toll-like receptor (TLR) 4 was involved in the pathogenesis of Henoch-Schönlein purpura (HSP). In this study, we evaluated the association between TLR4 gene polymorphisms and the risk of childhood HSP in a Chinese population. A total of 175 HSP patients and 186 controls were recruited in this case-control study. Three single-nucleotide polymorphisms of the TLR4 gene (rs1927914, rs10759932 and rs1927907) were genotyped using the matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) and Sequenom MassARRAY system. Our results revealed that a significantly reduced risk for HSP was associated with the G allele (OR = 0.71; p = 0.023) and G/G genotype (OR = 0.49; p = 0.021) of rs1927914. We also showed that rs1927914 variant decreased the risk of HSP in recessive inheritance model (OR = 0.55; p = 0.035, G/G vs A/A + A/G). In addition, we observed that a significantly decreased frequency of the haplotype GTC (rs1927914-rs10759932-rs1927907) in HSP patients compared with controls (OR = 0.56; p = 0.028). Our data suggested that TLR 4 rs1927914 polymorphism was associated with the decreased susceptibility to HSP in the Chinese children.
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Affiliation(s)
- Hui Xu
- Department of Clinical Laboratory, The Children's Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Guizhen Jiang
- Department of Clinical Laboratory, The Children's Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Hongqiang Shen
- Department of Clinical Laboratory, The Children's Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Wei Li
- Department of Clinical Laboratory, The Children's Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Jianhua Mao
- Department of Nephrology, The Children's Hospital of Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang Province, China.
| | - Yanxiang Pan
- Department of Clinical Laboratory, The Children's Hospital of Zhejiang University School of Medicine, Hangzhou, China
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Ajayi AM, Martins DTDO, Balogun SO, Oliveira RGD, Ascêncio SD, Soares IM, Barbosa RDS, Ademowo OG. Ocimum gratissimum L. leaf flavonoid-rich fraction suppress LPS-induced inflammatory response in RAW 264.7 macrophages and peritonitis in mice. JOURNAL OF ETHNOPHARMACOLOGY 2017; 204:169-178. [PMID: 28400288 DOI: 10.1016/j.jep.2017.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/07/2017] [Accepted: 04/07/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ocimum gratissimum L. is a herbaceous plant that has been reported in several ethnopharmacological surveys as a plant readily accessible to the communities and widely used for the treatment of inflammatory diseases. The main goal of this study was to investigate the in vitro and in vivo anti-inflammatory activity and mechanism of action of the ethylacetate fraction of O. gratissimum leaf (EAFOg) and to chemically characterize this fraction. MATERIALS AND METHODS EAFOg was obtained from a sequential methanol extract. The safety profile was evaluated on RAW 264.7 cells, using the alamarBlue® assay. Phenolic contents were determined by spectrophotometry, and metabolites quantified by high performance liquid chromatography. The anti-inflammatory activity of EAFOg and its ability to acts on leucocytes infiltration, inflammatory mediators as NO, IL-1β, TNF-α, and IL-10 in lipopolysaccharide-induced peritonitis in mice and LPS-stimulated RAW 264.7 macrophage were evaluated. In addition, the anti-inflammatory activity of EAFOg was also investigated in arachidonic acid-related enzymes. RESULTS Total phenolic and flavonoid contents of EAFOg were 139.76±1.07mg GAE/g and 109.95±0.05mg RE/g respectively. HPLC analysis revealed the presence of rutin, ellagic acid, myricetin and morin. The fraction exhibited no cytotoxic effects on the RAW 264.7 cells. The EAFOg (10, 50 and 200mg/kg) significantly reduced (p<0.05) neutrophils (38.8%, 58.9%, and 66.5%) and monocytes (38.9%, 58.0% and 72.8%) in LPS-induced peritonitis. Also, EAFOg (5, 20 and 100µg/mL) produced significant reduction in NO, IL-1β, and TNF-α in RAW 264.7 cells. However, IL-10 level was not affected by the EAFOg, and it preferentially inhibits COX-2 (IC50 =48.86±0.02µg/mL) than COX-1 and 15-LO (IC50 >100µg/mL). CONCLUSION The flavonoid-rich fraction of O. gratissimum leaves demonstrated anti-inflammatory activity via mechanisms that involves inhibition of leucocytes influx, NO, IL-1β, and TNF-α in vivo and in vitro, thus supporting its therapeutic potential in slowing down inflammatory processes in chronic diseases.
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Affiliation(s)
- Abayomi Mayowa Ajayi
- Department of Basic Health Sciences, Faculty of Medicine, Federal University of Mato Grosso (UFMT), Av. Fernando Correa da Costa, no. 2367, Coxipó, Boa Esperança, Cuiabá 78060-900, Mato Grosso, Brazil; Natural Products Research Laboratory, Faculty of Medicine, Federal University of Tocantins (UFT), Av. NS15, Palmas 77020-210, Tocantins, Brazil
| | - Domingos Tabajara de Oliveira Martins
- Department of Basic Health Sciences, Faculty of Medicine, Federal University of Mato Grosso (UFMT), Av. Fernando Correa da Costa, no. 2367, Coxipó, Boa Esperança, Cuiabá 78060-900, Mato Grosso, Brazil
| | - Sikiru Olaitan Balogun
- Department of Basic Health Sciences, Faculty of Medicine, Federal University of Mato Grosso (UFMT), Av. Fernando Correa da Costa, no. 2367, Coxipó, Boa Esperança, Cuiabá 78060-900, Mato Grosso, Brazil; Curso da Farmácia, AJES, Faculdades de Vale do Juruena. Avenida Gabriel Müller, s/n AJES - Módulo I, 78320-000, Juína Mato Grosso, Brazil
| | - Ruberlei Godinho de Oliveira
- Department of Basic Health Sciences, Faculty of Medicine, Federal University of Mato Grosso (UFMT), Av. Fernando Correa da Costa, no. 2367, Coxipó, Boa Esperança, Cuiabá 78060-900, Mato Grosso, Brazil
| | - Sérgio Donizeti Ascêncio
- Natural Products Research Laboratory, Faculty of Medicine, Federal University of Tocantins (UFT), Av. NS15, Palmas 77020-210, Tocantins, Brazil
| | - Ilsamar Mendes Soares
- Natural Products Research Laboratory, Faculty of Medicine, Federal University of Tocantins (UFT), Av. NS15, Palmas 77020-210, Tocantins, Brazil
| | - Robson Dos Santos Barbosa
- Natural Products Research Laboratory, Faculty of Medicine, Federal University of Tocantins (UFT), Av. NS15, Palmas 77020-210, Tocantins, Brazil
| | - Olusegun George Ademowo
- Department of Pharmacology & Therapeutics, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Oyo - State, Nigeria.
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Rodriguez Villanueva J, Martín Esteban J, Rodríguez Villanueva L. Solving the puzzle: What is behind our forefathers' anti-inflammatory remedies? JOURNAL OF COMPLEMENTARY MEDICINE RESEARCH 2017; 6:128-143. [PMID: 28163971 PMCID: PMC5289082 DOI: 10.5455/jice.20161204021732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 11/16/2016] [Indexed: 12/13/2022]
Abstract
Inflammation is a ubiquitous host response in charge of restoring normal tissue structure and function but is a double-edged sword, as the uncontrolled or excessive process can lead to the injury of host cells, chronic inflammation, chronic diseases, and also neoplastic transformation. Throughout history, a wide range of species has been claimed to have anti-inflammatory effects worldwide. Among them, Angelica sinensis, Tropaeolum majus, Castilleja tenuiflora, Biophytum umbraculum, to name just a few, have attracted the scientific and general public attention in the last years. Efforts have been made to assess their relevance through a scientific method. However, inflammation is a complex interdependent process, and phytomedicines are complex mixtures of compounds with multiple mechanisms of biological actions, which restricts systematic explanation. For this purpose, the omics techniques could prove extremely useful. They provide tools for interpreting and integrating results from both the classical medical tradition and modern science. As a result, the concept of network pharmacology applied to phytomedicines emerged. All of this is a step toward personalized therapy.
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Affiliation(s)
- Javier Rodriguez Villanueva
- Department of Biomedical Sciences, Pharmacy and Pharmaceutical Technology Unit, Faculty of Pharmacy, University of Alcalá, Ctra. de Madrid-Barcelona (Autovía A2) Km. 33,600 28805 Alcalá de Henares, Madrid, Spain
| | - Jorge Martín Esteban
- Faculty of Pharmacy, University of Alcalá, Ctra. de Madrid-Barcelona (Autovía A2) Km. 33,600 28805 Alcalá de Henares, Madrid, Spain
| | - Laura Rodríguez Villanueva
- Faculty of Pharmacy, University of Alcalá, Ctra. de Madrid-Barcelona (Autovía A2) Km. 33,600 28805 Alcalá de Henares, Madrid, Spain
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Cho WK, Jang JP, Choi EJ, Ahn M, Kim SH, Cho KS, Park SH, Baek IC, Jung MH, Kim TG, Suh BK. Association of Polymorphisms in Toll-Like Receptors 4 and 9 with Autoimmune Thyroid Disease in Korean Pediatric Patients. Int J Endocrinol 2017; 2017:2304218. [PMID: 28912808 PMCID: PMC5585642 DOI: 10.1155/2017/2304218] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 05/13/2017] [Accepted: 07/25/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Toll-like receptors (TLRs) have been suggested to be associated with the development of AITD. METHODS Fifteen single-nucleotide polymorphisms in 7 TLR genes were analyzed in 104 Korean children (girls = 86, boys = 18) with AITD (Hashimoto disease (HD) = 44, Graves' disease (GD) = 60, thyroid-associated ophthalmopathy (TAO) = 29, and non-TAO = 31) with 183 controls. RESULTS GD showed higher frequencies of the TLR4 rs1927911 C allele than control. TAO showed a lower frequency of the TLR4 rs1927911 CT genotype and non-TAO showed a higher frequency of the TLR4 rs1927911 CC genotype than control. The frequency of the TLR9 rs187084 CC genotype in TAO was higher than that in non-TAO. GD females showed a higher frequency of the TLR4 rs10759932 T allele, rs1927911 CC genotype, and the rs1927911 C allele than controls. GD males showed a higher frequency of the TLR4 rs10759932 CC genotype and rs1927911 TT genotype and lower frequency of the rs1927911 CT genotype than control. The frequency of the TLR4 rs10759932 CC genotype, C allele and rs1927911 TT genotype, and T allele in a GD female were lower than in a GD male. CONCLUSIONS Our results suggest that TLR4 and 9 polymorphisms might contribute to the pathogenesis of GD and TAO.
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Affiliation(s)
- Won Kyoung Cho
- Department of Pediatrics, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jung-Pil Jang
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Eun-Jeong Choi
- Catholic Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Moonbae Ahn
- Department of Pediatrics, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Shin Hee Kim
- Department of Pediatrics, College of Medicine, Incheon St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kyoung Soon Cho
- Department of Pediatrics, College of Medicine, Bucheon St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - So Hyun Park
- Department of Pediatrics, College of Medicine, St. Vincent's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Cheol Baek
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Min Ho Jung
- Department of Pediatrics, College of Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Tai-Gyu Kim
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Catholic Hematopoietic Stem Cell Bank, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- *Tai-Gyu Kim: and
| | - Byung-Kyu Suh
- Department of Pediatrics, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
- *Byung-Kyu Suh:
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Nissar S, Sameer AS, Rasool R, Qadri Q, Chowdri NA, Rashid F. Role of TLR4 gene polymorphisms in the colorectal cancer risk modulation in ethnic Kashmiri population – A case–control study. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2017. [DOI: 10.1016/j.ejmhg.2016.04.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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Sharma S, Garg I, Ashraf MZ. TLR signalling and association of TLR polymorphism with cardiovascular diseases. Vascul Pharmacol 2016; 87:30-37. [DOI: 10.1016/j.vph.2016.10.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/26/2016] [Accepted: 10/28/2016] [Indexed: 12/13/2022]
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40
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Dai D, Gao Y, Chen J, Huang Y, Zhang Z, Xu F. Time-resolved metabolomics analysis of individual differences during the early stage of lipopolysaccharide-treated rats. Sci Rep 2016; 6:34136. [PMID: 27695004 PMCID: PMC5046119 DOI: 10.1038/srep34136] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 09/07/2016] [Indexed: 01/22/2023] Open
Abstract
Lipopolysaccharide (LPS) can lead to uncontrollable cytokine production and eventually cause fatal sepsis syndrome. Individual toxicity difference of LPS has been widely reported. In our study we observed that two thirds of the rats (24/36) died at a given dose of LPS, while the rest (12/36) survived. Tracking the dynamic metabolic change in survival and non-survival rats in the early stage may reveal new system information to understand the inter-individual variation in response to LPS. As the time-resolved datasets are very complex and no single method can elucidate the problem clearly and comprehensively, the static and dynamic metabolomics methods were employed in combination as cross-validation. Intriguingly, some common results have been observed. Lipids were the main different metabolites between survival and non-survival rats in pre-dose serum and in the early stage of infection with LPS. The LPS treatment led to S-adenosly-methionine and total cysteine individual difference in early stage, and subsequent significant perturbations in energy metabolism and oxidative stress. Furthermore, cytokine profiles were analyzed to identify potential biological associations between cytokines and specific metabolites. Our collective findings may provide some heuristic guidance for elucidating the underlying mechanism of individual difference in LPS-mediated disease.
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Affiliation(s)
- Die Dai
- Key Laboratory of Drug Quality Control and Pharmacovigilance (China Pharmaceutical University), Ministry of Education, Nanjing 210009, China.,Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Yiqiao Gao
- Key Laboratory of Drug Quality Control and Pharmacovigilance (China Pharmaceutical University), Ministry of Education, Nanjing 210009, China.,Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Jiaqing Chen
- Key Laboratory of Drug Quality Control and Pharmacovigilance (China Pharmaceutical University), Ministry of Education, Nanjing 210009, China.,Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Yin Huang
- Key Laboratory of Drug Quality Control and Pharmacovigilance (China Pharmaceutical University), Ministry of Education, Nanjing 210009, China.,Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Zunjian Zhang
- Key Laboratory of Drug Quality Control and Pharmacovigilance (China Pharmaceutical University), Ministry of Education, Nanjing 210009, China.,Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China.,State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing 210009, China
| | - Fengguo Xu
- Key Laboratory of Drug Quality Control and Pharmacovigilance (China Pharmaceutical University), Ministry of Education, Nanjing 210009, China.,Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China.,State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing 210009, China
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41
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García Bueno B, Caso JR, Madrigal JLM, Leza JC. Innate immune receptor Toll-like receptor 4 signalling in neuropsychiatric diseases. Neurosci Biobehav Rev 2016; 64:134-47. [PMID: 26905767 DOI: 10.1016/j.neubiorev.2016.02.013] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 11/27/2015] [Accepted: 02/12/2016] [Indexed: 02/08/2023]
Abstract
The innate immunity is a stereotyped first line of defense against pathogens and unspecified damage signals. One of main actors of innate immunity are the Toll-like receptors (TLRs), and one of the better characterized members of this family is TLR-4, that it is mainly activated by Gram-negative bacteria lipopolysaccharide. In brain, TLR-4 organizes innate immune responses against infections or cellular damage, but also possesses other physiological functions. In the last years, some evidences suggest a role of TLR-4 in stress and stress-related neuropsychiatric diseases. Peripheral and brain TLR-4 activation triggers sickness behavior, and its expression is a risk factor of depression. Some elements of the TLR-4 signaling pathway are up-regulated in peripheral samples and brain post-mortem tissue from depressed and suicidal patients. The "leaky gut" hypothesis of neuropsychiatric diseases is based on the existence of an increase of the intestinal permeability which results in bacterial translocation able to activate TLR-4. Enhanced peripheral TLR-4 expression/activity has been described in subjects diagnosed with schizophrenia, bipolar disorder and in autistic children. A role for TLR-4 in drugs abuse has been also proposed. The therapeutic potential of pharmacological/genetic modulation of TLRs signaling pathways in neuropsychiatry is promising, but a great preclinical/clinical scientific effort is still needed.
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Affiliation(s)
- B García Bueno
- Department of Pharmacology, School of Medicine, Complutense University, CIBERSAM, Instituto de Investigación Hospital 12 de Octubre (Imas12), 28040 Madrid, Spain.
| | - J R Caso
- Department of Pharmacology, School of Medicine, Complutense University, CIBERSAM, Instituto de Investigación Hospital 12 de Octubre (Imas12), 28040 Madrid, Spain.
| | - J L M Madrigal
- Department of Pharmacology, School of Medicine, Complutense University, CIBERSAM, Instituto de Investigación Hospital 12 de Octubre (Imas12), 28040 Madrid, Spain.
| | - J C Leza
- Department of Pharmacology, School of Medicine, Complutense University, CIBERSAM, Instituto de Investigación Hospital 12 de Octubre (Imas12), 28040 Madrid, Spain.
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Rasheed H, McKinney C, Stamp LK, Dalbeth N, Topless RK, Day R, Kannangara D, Williams K, Smith M, Janssen M, Jansen TL, Joosten LA, Radstake TR, Riches PL, Tausche AK, Lioté F, Lu L, Stahl EA, Choi HK, So A, Merriman TR. The Toll-Like Receptor 4 (TLR4) Variant rs2149356 and Risk of Gout in European and Polynesian Sample Sets. PLoS One 2016; 11:e0147939. [PMID: 26808548 PMCID: PMC4726773 DOI: 10.1371/journal.pone.0147939] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 01/11/2016] [Indexed: 01/31/2023] Open
Abstract
Deposition of crystallized monosodium urate (MSU) in joints as a result of hyperuricemia is a central risk factor for gout. However other factors must exist that control the progression from hyperuricaemia to gout. A previous genetic association study has implicated the toll-like receptor 4 (TLR4) which activates the NLRP3 inflammasome via the nuclear factor-κB signaling pathway upon stimulation by MSU crystals. The T-allele of single nucleotide polymorphism rs2149356 in TLR4 is a risk factor associated with gout in a Chinese study. Our aim was to replicate this observation in participants of European and New Zealand Polynesian (Māori and Pacific) ancestry. A total of 2250 clinically-ascertained prevalent gout cases and 13925 controls were used. Non-clinically-ascertained incident gout cases and controls from the Health Professional Follow-up (HPFS) and Nurses Health Studies (NHS) were also used. Genotypes were derived from genome-wide genotype data or directly obtained using Taqman. Logistic regression analysis was done including age, sex, diuretic exposure and ancestry as covariates as appropriate. The T-allele increased the risk of gout in the clinically-ascertained European samples (OR = 1.12, P = 0.012) and decreased the risk of gout in Polynesians (OR = 0.80, P = 0.011). There was no evidence for association in the HPFS or NHS sample sets. In conclusion TLR4 SNP rs2143956 associates with gout risk in prevalent clinically-ascertained gout in Europeans, in a direction consistent with previously published results in Han Chinese. However, with an opposite direction of association in Polynesians and no evidence for association in a non-clinically-ascertained incident gout cohort this variant should be analysed in other international gout genetic data sets to determine if there is genuine evidence for association.
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Affiliation(s)
- Humaira Rasheed
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
- University of Engineering and Technology, Lahore, Pakistan
| | - Cushla McKinney
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | - Lisa K. Stamp
- Department of Medicine, University of Otago, Christchurch, Christchurch, New Zealand
| | - Nicola Dalbeth
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Ruth K. Topless
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | - Richard Day
- School of Medical Sciences, University of New South Wales, Sydney, Australia
- Department of Clinical Pharmacology & Toxicology, St Vincent’s Hospital, Sydney, Australia
| | - Diluk Kannangara
- School of Medical Sciences, University of New South Wales, Sydney, Australia
- Department of Clinical Pharmacology & Toxicology, St Vincent’s Hospital, Sydney, Australia
| | - Kenneth Williams
- School of Medical Sciences, University of New South Wales, Sydney, Australia
- Department of Clinical Pharmacology & Toxicology, St Vincent’s Hospital, Sydney, Australia
| | - Malcolm Smith
- Department of Medicine, Flinders Medical Centre and Repatriation General Hospital, Adelaide, Australia
| | - Matthijs Janssen
- Department of Rheumatology, Rijnstate Hospital, Arnhem, The Netherlands
| | - Tim L. Jansen
- Department of IQ HealthCare, VieCuri Medical Centre, Venlo, The Netherlands
| | - Leo A. Joosten
- Department of Internal Medicine and Radboud Institute of Molecular Life Science, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Timothy R. Radstake
- Department of Rheumatology and Clinical Immunology, Laboratory of Translational Immunology, Department of Immunology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Philip L. Riches
- Rheumatic Diseases Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Anne-Kathrin Tausche
- Department of Rheumatology, University Clinic “Carl-Gustav-Carus”, Dresden, Germany
| | - Frederic Lioté
- INSERM, UMR-S 1132, Hospital Lariboisière, Paris, France
- University Paris Diderot (UFR de Médecine), Sorbonne Paris Cité, Paris, France
| | - Leo Lu
- Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Eli A. Stahl
- Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, United States of America
| | - Hyon K. Choi
- Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Alexander So
- DAL, Service of Rheumatology, Laboratory of Rheumatology, University of Lausanne, CHUV, Nestlé, Lausanne, Switzerland
| | - Tony R. Merriman
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
- * E-mail:
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Li G, Wu X, Yang L, He Y, Liu Y, Jin X, Yuan H. TLR4-mediated NF-κB signaling pathway mediates HMGB1-induced pancreatic injury in mice with severe acute pancreatitis. Int J Mol Med 2015; 37:99-107. [PMID: 26719855 PMCID: PMC4687439 DOI: 10.3892/ijmm.2015.2410] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Accepted: 11/11/2015] [Indexed: 12/21/2022] Open
Abstract
Severe acute pancreatitis (SAP) is an extremely dangerous acute abdominal disorder which causes multiple complications and has a high mortality rate. Previous research has suggested that high-mobility group box 1 (HMGB1) plays an important role in the pathogenesis of SAP; however, the mechanisms underlying this strong correlation remain unclear. In this study, to further investigate whether HMGB1 acts as a stimulating factor, and whether Toll-like receptor 4 (TLR4) acts as its major mediator in the development of pancreatic injury during SAP, recombinant human HMGB1 (rhHMGB1) and TLR4-deficient mice were used. We found that HMGB1 and TLR4 were highly expressed, and nuclear factor-κB (NF-κB) was activated in our mouse model of SAP. We noted that the rhHMGB1 pancreas-targeted injection activated the TLR4-mediated NF-κB signaling pathway and induced pancreatic injury in wild-type mice. In TLR4-deficient mice, the rhHMGB1-induced activation of NF-κB and pathological changes in the pancreas were less evident than in wild-type mice. Therefore, this study provides evidence that HMGB1 promotes the pathogenesis of pancreatitis, and its downstream TLR4-mediated NF-κB signaling pathway is a potential important mediator in the development of this form of pancreatic injury.
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Affiliation(s)
- Gang Li
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Xuejun Wu
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Le Yang
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Yuxiang He
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Yang Liu
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Xing Jin
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Hai Yuan
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
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Li G, Wu X, Yang L, He Y, Liu Y, Jin X, Yuan H. TLR4-mediated NF-κB signaling pathway mediates HMGB1-induced pancreatic injury in mice with severe acute pancreatitis. Int J Mol Med 2015; 38:1313. [PMID: 27573568 PMCID: PMC5029970 DOI: 10.3892/ijmm.2016.2707] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Accepted: 11/11/2015] [Indexed: 12/17/2022] Open
Affiliation(s)
- Gang Li
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Xuejun Wu
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Le Yang
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Yuxiang He
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Yang Liu
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Xing Jin
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Hai Yuan
- Department of Vascular Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
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Lipopolysaccharide responsiveness is an independent predictor of death in patients with chronic heart failure. J Mol Cell Cardiol 2015; 87:48-53. [DOI: 10.1016/j.yjmcc.2015.07.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 07/28/2015] [Accepted: 07/30/2015] [Indexed: 11/24/2022]
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Chatzivasileiou K, Kriebel K, Steinhoff G, Kreikemeyer B, Lang H. Do oral bacteria alter the regenerative potential of stem cells? A concise review. J Cell Mol Med 2015; 19:2067-74. [PMID: 26058313 PMCID: PMC4568911 DOI: 10.1111/jcmm.12613] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 03/15/2015] [Indexed: 12/17/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are widely recognized as critical players in tissue regeneration. New insights into stem cell biology provide evidence that MSCs may also contribute to host defence and inflammation. In case of tissue injury or inflammatory diseases, e.g. periodontitis, stem cells are mobilized towards the site of damage, thus coming in close proximity to bacteria and bacterial components. Specifically, in the oral cavity, complex ecosystems of commensal bacteria live in a mutually beneficial state with the host. However, the formation of polymicrobial biofilm communities with pathogenic properties may trigger an inadequate host inflammatory-immune response, leading to the disruption of tissue homoeostasis and development of disease. Because of their unique characteristics, MSCs are suggested as crucial regulators of tissue regeneration even under such harsh environmental conditions. The heterogeneous effects of bacteria on MSCs across studies imply the complexity underlying the interactions between stem cells and bacteria. Hence, a better understanding of stem cell behaviour at sites of inflammation appears to be a key strategy in developing new approaches for in situ tissue regeneration. Here, we review the literature on the effects of oral bacteria on cell proliferation, differentiation capacity and immunomodulation of dental-derived MSCs.
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Affiliation(s)
- Kyriaki Chatzivasileiou
- Department of Operative Dentistry and Periodontology, University of Rostock, Rostock, Germany
| | - Katja Kriebel
- Department of Operative Dentistry and Periodontology, University of Rostock, Rostock, Germany
| | - Gustav Steinhoff
- Department of Cardiac Surgery, University of Rostock, Rostock, Germany
| | - Bernd Kreikemeyer
- Institute of Medical Microbiology, Virology and Hygiene, University of Rostock, Rostock, Germany
| | - Hermann Lang
- Department of Operative Dentistry and Periodontology, University of Rostock, Rostock, Germany
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Pellegrino P, Falvella FS, Cheli S, Perrotta C, Clementi E, Radice S. The role of Toll-like receptor 4 polymorphisms in vaccine immune response. THE PHARMACOGENOMICS JOURNAL 2015; 16:96-101. [PMID: 25823688 DOI: 10.1038/tpj.2015.21] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 12/22/2014] [Accepted: 01/28/2015] [Indexed: 12/22/2022]
Abstract
Toll-like receptors (TLRs) are a class of pattern recognition receptors that are deputed to recognise a range of molecular structures in pathogens. One of the most studied members of this family is the TLR4, which is essential for the signalling of lipopolysaccharide. The gene encoding for TLR4 is highly polymorphic and this genetic variability may explain in part the interindividual variability observed in several clinical setting, including the response to vaccination. Herein, we review and systematise the available scientific evidence about the effect of TLR4 polymorphisms on vaccine response, including approved prophylactic, new therapeutic cancer vaccines and recently approved vaccine adjuvants. Data reviewed in this analysis indicate that TLR4 polymorphisms significantly affect vaccine response. If these results are confirmed by further analyses, the use of these genetic biomarkers may become a useful tool to tailor vaccination in specific subsets of patients.
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Affiliation(s)
- P Pellegrino
- Unit of Clinical Pharmacology, Department of Biomedical and Clinical Sciences, University Hospital "Luigi Sacco", Università di Milano, Milan, Italy
| | - F S Falvella
- Unit of Clinical Pharmacology, Department of Biomedical and Clinical Sciences, University Hospital "Luigi Sacco", Università di Milano, Milan, Italy
| | - S Cheli
- Unit of Clinical Pharmacology, Department of Biomedical and Clinical Sciences, University Hospital "Luigi Sacco", Università di Milano, Milan, Italy
| | - C Perrotta
- Unit of Clinical Pharmacology, Department of Biomedical and Clinical Sciences, University Hospital "Luigi Sacco", Università di Milano, Milan, Italy
| | - E Clementi
- Scientific Institute, IRCCS E. Medea, Lecco, Italy.,Unit of Clinical Pharmacology, Department of Biomedical and Clinical Sciences, Consiglio Nazionale delle Ricerche Institute of Neuroscience, University Hospital "Luigi Sacco", Università di Milano, Milan, Italy
| | - S Radice
- Unit of Clinical Pharmacology, Department of Biomedical and Clinical Sciences, University Hospital "Luigi Sacco", Università di Milano, Milan, Italy
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Association of TLR1, TLR2, TLR4, TLR6, and TIRAP polymorphisms with disease susceptibility. Immunol Res 2015; 62:234-52. [DOI: 10.1007/s12026-015-8640-6] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Genetic susceptibility to prosthetic joint infection following total joint arthroplasty: A systematic review. Gene 2015; 563:76-82. [PMID: 25747542 DOI: 10.1016/j.gene.2015.03.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 03/03/2015] [Accepted: 03/04/2015] [Indexed: 12/28/2022]
Abstract
BACKGROUND Prosthetic joint infection (PJI) is the most common cause of total joint arthroplasty failure and revision surgery. Genetic polymorphisms could be determinant factors for PJI. METHODS We performed a systematic research of Medline, Pubmed, Embase, Cochrane Library, and Google Scholar, and identified 11 studies with 34 kinds of gene polymorphisms, were included in the synthesis. RESULTS Our data suggest that the C allele and genotype C/C for MBL-550 SNP, genotype A/A for MBL-54 SNP and G allele for MBL-221 SNP increase the risk of PJI, while G allele and genotype G/G for MBL-550 SNP decrease the risk of PJI in Caucasian populations. Several other genes reported by single-center studies also contribute to the genetic susceptibility to septic PJI. No definitive conclusions could be achieved due to the small amount of data in the included studies. CONCLUSION Several genes contribute to the genetic susceptibility to PJI following total joint arthroplasty. Further studies will enhance the understanding of PJI, and may inform and direct early interventions.
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Association of Toll like receptor Asp299Gly with rheumatoid arthritis risk: a systematic review of case-control studies and meta-analysis. Pathol Res Pract 2014; 211:219-25. [PMID: 25499175 DOI: 10.1016/j.prp.2014.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 09/25/2014] [Accepted: 11/04/2014] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Rheumatoid arthritis (RA) is thought to be triggered by various genetic and environmental factors. Few human epidemiologic studies demonstrated that single nucleotide polymorphisms (SNPs) in Toll-like receptor (TLR) genes are associated with RA. We aimed to evaluate the effects of TLR polymorphisms on the risk of RA pathogenesis by using a meta-analysis approach. METHODS Following the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines, a systematic search and meta-analysis of the literature was conducted. We screened the medical literature based on keywords search in MEDLINE and EMBASE 'Toll-like receptor', 'polymorphism', and rheumatoid arthritis. Meta-analyses were performed under the random-effects model by using: (1) recessive, (2) homozygous, (3) dominant, (4) codominant and allele contrast models. RESULTS A total of 3086 cases and 3756 controls in nine studies were included in the meta-analysis. Association between TLR4 Asp299Gly and RA risk was marginally significant [OR = 0.856 (95% CI, 0.716-1.022); P = 0.086] in the homozygous model. AA and GG homozygote genotypes tended to be significant protective factors against RA risk. CONCLUSION Our overall analyses indicated that TLR4 Asp299Gly polymorphism might contribute to RA pathogenesis.
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