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Xue L, Ding J, Wang Q, Pang X, Fan H. F-128RISK FACTORS OF MYASTHENIC CRISIS AFTER TOTAL THYMECTOMY FOR PATIENTS WITH THYMOMA AND MYASTHENIA GRAVIS. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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77
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Fan H, Chen K, Duan L, Wang YZ, Ju G. Beneficial effects of early hemostasis on spinal cord injury in the rat. Spinal Cord 2016; 54:1058. [PMID: 27324321 PMCID: PMC5399147 DOI: 10.1038/sc.2016.97] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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78
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Wu Z, Wu H, Wang H, Wu C, Xu W, Zhang L, Fan H, Cai J, Ma J. A rare complication after minimally invasive posterior cervical laminoforaminotomy. JOURNAL OF MUSCULOSKELETAL & NEURONAL INTERACTIONS 2016; 16:172-3. [PMID: 27282462 PMCID: PMC5114361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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79
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Kivitz A, Haraoui B, Kaine J, Castellano V, Bananis E, Connell C, Fan H, Takiya L. THU0174 A Safety Analysis of Tofacitinib 5 mg Twice Daily Administered as Monotherapy or in Combination with Background Conventional Synthetic Dmards in A Phase 3 Rheumatoid Arthritis Population. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.1846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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80
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van Vollenhoven R, Cohen S, Mendelsohn A, Bananis E, Fan H, Takiya L, Fleischmann R. AB0398 Efficacy of Adalimumab and Tofacitinib in Rheumatoid Arthritis: Post-Hoc Analyses from A Phase 3 Study. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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81
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Tang K, Zhao J, Zhu S, Fan H, Cui H, Zhu H, Liu Z. The reusability characteristics of LiF:Mg,Cu,P with a maximum intensity at 280 °C in an environment with elevated temperature. RADIAT MEAS 2016. [DOI: 10.1016/j.radmeas.2016.01.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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82
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Yan ZP, Tong X, Liu ST, Ma Y, Peng SF, Yang X, Fan H. Role and diagnostic value of gene variants in assessing the risk of chronic obstructive pulmonary disease. GENETICS AND MOLECULAR RESEARCH 2016; 15:gmr7854. [PMID: 27323020 DOI: 10.4238/gmr.15027854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Meta-analyses have revealed many positive associations between gene variants and susceptibility to chronic obstructive pulmonary disease (COPD). However, some of those positive results may be false positives. Therefore, we investigated the genetic polymorphisms associated with COPD risk and determined their diagnostic value. We extracted the odds ratio (OR) and 95% confidence interval for each polymorphism from published meta-analyses concerning gene variants and COPD susceptibility in October 2014, subsequently we calculated false-positive report probabilities (FPRPs) for statistically significant associations (P value < 0.05). We determined the diagnostic value of the true positive polymorphisms of COPD using the Meta-DiSc software. Twenty-five gene polymorphisms were significantly associated with COPD risk. The FPRP test results were as follows: 1) when the prior probability was 0.001 and the OR was 1.5, ADAM33 rs612709, CHRNA3/5 rs1051730, CHRNA3/5 rs8034191, CHRNA3/5 rs16969968, and TGFB1 rs1800470 were truly associated with COPD risk (FPRP < 0.2); 2) when the prior probability was 0.000001 and the OR was 1.5, all the variants except TGFB1 rs1800470 remained noteworthy; and 3) when the probability was 0.000001 and the OR was 1.2, ADAM33 rs612709 and CHRNA3/5 rs1051730 remained true positives. Unfortunately, the results of the diagnostic accuracy meta-analyses suggested that none of the variants had high value for COPD diagnosis.
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83
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Fan H, Sparrow C, Raymer D, Nassif M, Vader J, LaRue S. Invasive and Noninvasive Hemodynamic Measures Correlate in Patients with Continuous Flow Left Ventricular Assist Devices. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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84
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Zhou X, Wu J, Lin F, Meng Q, Liu J, Fan H, Liu Z. Fasudil Prevents Pulmonary Vascular Remodeling in a Rat Model of Pulmonary Hypertension with Left Heart. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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85
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Tang K, Fan H, Cui H, Zhu H, Liu Z. Comparative studies on radioluminescent and thermoluminescent spectra of LiF:Mg,Cu,P and LiF:Mg,Cu,Si. RADIATION PROTECTION DOSIMETRY 2016; 168:459-464. [PMID: 26264711 DOI: 10.1093/rpd/ncv377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 07/10/2015] [Indexed: 06/04/2023]
Abstract
The influence of various annealing treatments on radioluminescent (RL) and thermoluminescent (TL) spectra of LiF:Mg,Cu,Si and LiF:Mg,Cu,P was investigated. The TL and RL emission bands for LiF:Mg,Cu,P are not the same; however, the emission band peaking at ∼383 nm is predominant in the TL and RL emission for LiF:Mg,Cu,Si. With the increase in annealing temperatures in the range of 240-300°C, for LiF:Mg,Cu,P, the intensity of TL decreases much more rapidly than that of RL. For LiF:Mg,Cu,Si, the area ratios of the two bands of RL and TL remain constant within experimental errors. It suggests that there is a significant decrease in the concentration of recombination centres in LiF:Mg,Cu,P after the annealing, in addition to the decrease in trapping centres, the recombination centres for main TL emission and RL emission in LiF:Mg,Cu,Si are the same, and the recombination centres for TL emission and RL emission in LiF:Mg,Cu,P are not the same. P is a more effective dopant than Si.
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86
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Zhang X, Li GJ, Li XF, Fan H, Li JP. A new HLA-A allele, HLA-A*11:120, sequenced in a Chinese hematopoietic stem cell donor. HLA 2016; 87:168-70. [PMID: 26899298 DOI: 10.1111/tan.12760] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 01/26/2016] [Accepted: 01/31/2016] [Indexed: 11/30/2022]
Abstract
HLA-A*11:120 has one nucleotide change from HLA-A*11:01:01:01 where 295 T(ACC) is changed to S(AGC).
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87
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Tao SQ, Xia RS, Li F, Cao L, Fan H, Fan Y, Yang LJ. Efficacy of 3.6% topical ALA-PDT for the treatment of severe acne vulgaris. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2016; 20:225-231. [PMID: 26875889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To evaluate the efficacy and safety of topical 5-aminolevulinic acid (ALA) mediated photodynamic therapy (PDT) for the treatment of severe acne vulgaris. PATIENTS AND METHODS A total of 125 patients with Pillsbury III-IV severe facial acne were treated with 3 courses of ALA-PDT with an interval of 2 weeks. ALA gel (3.6%) was applied topically to acne lesions for 1.5 h. The lesions were irradiated by a LED light of 633 nm with a light intensity of 66 mW/cm² and a light dose of 126 J/cm². Patients were evaluated for efficacy and safety at weeks 2, 4, 6, 8, 12 after the initial treatment. RESULTS The total effective rates were 1.6%, 24.8%, 68.8%, 89.6% and 88.8% at the 2- 4- 6- 8- and 12-week after the initial treatment respectively. The clinical outcomes were the best at 4 weeks after the final treatment. The best effective rate and cure rate were 89.6% and 44% respectively. 26 patients and 16 patients showed apparent exacerbation of acne lesions before the 2nd and 3rd treatment respectively, but all of them showed good or excellent improvement after 3-course treatment. Adverse reactions were mild and transient. CONCLUSIONS 3.6% ALA-PDT is a simple, safe and effective therapeutic option for the treatment of severe acne vulgaris.
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88
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Hu JJ, Qiu X, Qiao F, Song W, Wu H, Gong P, Shen X, Fan H. 214P HBx upregulated lncRNA facilitates HCC tumor growth via suppression of p27Kip1/CDK2. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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89
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Fan H, Tang HB, Kang J, Shan L, Song H, Zhu K, Wang J, Ju G, Wang YZ. Involvement of endoplasmic reticulum stress in the necroptosis of microglia/macrophages after spinal cord injury. Neuroscience 2015; 311:362-73. [PMID: 26523978 DOI: 10.1016/j.neuroscience.2015.10.049] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 10/22/2015] [Accepted: 10/24/2015] [Indexed: 12/11/2022]
Abstract
Microglia/macrophages play a crucial role in inflammation after spinal cord injury (SCI). Although extensive studies have been performed on the mechanisms of microglia/macrophage activation and recruitment, how microglia/macrophages are eliminated remains unclear. In the present study, we observed a high-level expression of mixed lineage kinase domain-like protein (MLKL), a key molecule in the execution of necroptosis, in microglia/macrophages after SCI in mice. In vivo PI-labeling and Necrostatin-1 treatment confirmed the necroptosis of microglia/macrophages. Interestingly, our electronic microscopic (EM) study revealed that MLKL localized not only at the membrane but also on the endoplasmic reticulum (ER) of necroptotic microglia/macrophages. Furthermore, receptor-interacting protein 3 (RIP3), another necrosome component, was also found on the ER of necroptotic microglia/macrophages. And Glucose-regulated protein 78 (GRP78), an ER stress sensor, was up-regulated in MLKL-positive microglia/macrophages after SCI, suggesting a possible link between necroptosis and ER stress. In vitro, oxygen-glucose deprivation (OGD) stress induced ER stress and necroptosis in microglia. Inhibiting ER stress by 4-phenylbutyrate (4-PBA) significantly blocked the OGD-induced necroptosis of microglia. In the end, our data showed that, GRP78 and phosphorylated MLKL were co-expressed by the microglia/macrophages in the injured human spinal cord. Taken together, these results suggested that microglia/macrophages undergo an ER-stress involved necroptosis after SCI, implying that ER stress and necroptosis could be manipulated for modulating inflammation post-SCI.
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90
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Orberg ET, Fan H, Tam A, Wu S, Wu X, Ganguly S, Pardoll D, Sears C, Housseau F. 103 The myeloid immune signature of enterotoxigenic Bacteroides fragilis-induced colon tumorigenesis. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30003-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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91
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Curtis J, Lee E, Martin G, Mariette X, Terry K, Chen Y, Geier J, Andrews J, Kaur M, Fan H, Nduaka C. THU0174 Analysis of Non-melanoma Skin Cancer Across the Tofacitinib Rheumatoid Arthritis Clinical Programme. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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92
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Fan H, Lu S. Fusion of human bone hemopoietic stem cell with esophageal carcinoma cells didn't generate esophageal cancer stem cell. Neoplasma 2015; 61:540-5. [PMID: 25030437 DOI: 10.4149/neo_2014_066] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Prior studies showed that cell fusion between bone marrow-derived cell (BMDC) and somatic cell might be the origin of cancer stem cell. Our previous study suggested that cell fusion of human bone marrow-derived mesenchymal stem cell (MSC) with esophageal cancer cell did not generate cancer stem cells. But up to now, the origin of cancer stem cell is still ambiguous. In this study, we carried out the cell fusion experiment between hemopoietic stem cells (HSCs) and human esophageal cancer cells, and found that cell fusion slowed the growth speed of esophageal cancer cells and decreased the clone formation ability and tumorigenicity in NOD/SCID mice. In addition, cell fusion did not increase the ratio of side population (SP) cells and the resistance to chemotherapeutic drugs. Collectively, our data indicated that cell fusion between HSCs and esophageal cancer cells has a therapeutic effect rather than generate cells with characteristics of esophageal cancer stem cells.
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93
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Winthrop K, Lindsey S, Fan H, Wang L, Gelone D, Mendelsohn A, Bananis E, Curtis J. SAT0229 Herpes Zoster and Tofacitinib: The Risk of Concomitant Nonbiologic Therapy. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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94
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Zhou X, Liu J, Meng Q, Li J, Guo Z, Liu Z, Fan H. IL-25 Attenuates Obliterative Bronchiolitis By Regulating the Polarization of Macrophages in Murine Orthotopic Tracheal Transplantation Models. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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95
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Tang K, Fan H, Cui H, Zhu H, Liu Z. Further studies on the role of dopants in LiF:Mg,Cu,Si thermoluminescent material. RADIATION PROTECTION DOSIMETRY 2015; 163:288-291. [PMID: 24966341 DOI: 10.1093/rpd/ncu198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The 3-D thermoluminescence spectra and glow curves of LiF:Mg,Cu,Si, LiF:Mg,Cu, LiF:Mg,Si and LiF:Cu,Si with low concentrations of Mg and Cu were measured and were compared with those with high concentrations to investigate further the role of dopants in LiF:Mg,Cu,Si material. The shape of glow curves of the four samples is similar; however, LiF:Cu,Si sample had no Mg dopant. It is concluded that the TL emission to be from self-trapped excitons in LiF, and this emission could be enhanced and altered by Mg, Cu and Si dopants in LiF:Mg,Cu,Si; all three dopants are necessary to obtain the bright TL emission and may be involved in the luminescence process; Mg seems to be the most essential dopant and Cu is involved in the trapping although the role of Mg dominates; both Cu and Si play a role in the main emission process and Cu also plays a role in reducing the emission around 610 nm.
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96
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Tang K, Fan H, Cui H, Zhu H, Liu Z. Studies on energy response of newly developed LiF:Mg,Cu,P TL chips with additional PbO doping. RADIATION PROTECTION DOSIMETRY 2015; 163:284-287. [PMID: 24962516 DOI: 10.1093/rpd/ncu190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
One of the most important characteristics of thermoluminescent detectors, if they are intended to be used in a wide range of energies, is their energy response. A comparison of the energy characteristics of the newly developed LiF:Mg,Cu,P chips with additional PbO doping (GR-200E) against GR-200A LiF:Mg,Cu,P was attempted to improve further the accuracy of personal dosimetry. Hp(10) energy response of GR-200E is quite different from that of GR-200A. For GR-200E, the anomalous energy response can be eliminated and the over-response to low-energy photons should be filtered properly. The GR-200E under the copper filter provided results within 4 % with respect to the conventional quantity value over the energy range from 65 to 1250 keV. The ratio of the Hp(10) response of the Cu-covered filters for GR-200A to that of those covered with plastic for GR-200E is a very good tool for identifying the radiation quality in the range studied. The accuracy in the dose evaluated from TLD measurements can be greatly increased.
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97
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Zhao Q, Zhang B, Chen Y, Li M, Zhao X, Fan H, Li S. Association of the interleukin-6 gene -572G/C polymorphism with cancer risk: a meta-analysis. GENETICS AND MOLECULAR RESEARCH 2015; 14:16921-8. [DOI: 10.4238/2015.december.14.20] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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98
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Wang JF, Xue Y, Zhu XB, Fan H. Efficacy and safety of echinocandins versus triazoles for the prophylaxis and treatment of fungal infections: a meta-analysis of RCTs. Eur J Clin Microbiol Infect Dis 2014; 34:651-9. [PMID: 25502737 PMCID: PMC4365286 DOI: 10.1007/s10096-014-2287-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 11/14/2014] [Indexed: 11/27/2022]
Abstract
Echinocandins and triazoles were proven to be effective antifungal drugs against invasive fungal infections (IFI), which may cause significant morbidity and mortality in immunocompromised patients. The aim of this study was to compare the efficacy and safety between echinocandins and triazoles for the prophylaxis and treatment of fungal infections. PubMed, Embase, and the Cochrane Library were searched to identify relevant randomized controlled trials (RCTs) up to July 2014. The quality of trials was assessed with the Jadad scoring system. The primary outcomes of interest were treatment success, microbiological success, breakthrough infection, drug-related adverse events (AEs), withdrawals due to AEs, and all-cause mortality. Ten RCTs, involving 2,837 patients, were included, as follows: caspofungin versus fluconazole (n = 1), caspofungin versus itraconazole (n = 1), anidulafungin versus fluconazole (n = 1), micafungin versus fluconazole (n = 4), micafungin versus voriconazole (n = 2), and micafungin versus itraconazole (n = 1). Echinocandins and triazoles showed similar effects in terms of favorable treatment success rate [relative risk (RR) = 1.02, 95 % confidence interval (CI), 0.97–1.08], microbiological success rate (RR = 0.98, 95 % CI, 0.90–1.15), breakthrough infection (RR = 1.09; 95 % CI, 0.59–2.01), drug-related AEs (RR = 0.94; 95 % CI, 0.71–1.15), and all-cause mortality (RR = 0.85; 95 % CI, 0.66–1.10) in the prophylaxis and treatment of fungal infections. Additionally, echinocandins were more effective than triazoles for prophylaxis in patients undergoing hematologic malignancies or those who received hematopoietic stem cell transplantation (HSCT; RR = 1.08; 95 % CI, 1.02–1.15). Echinocandins significantly decreased the AE-related withdrawals rate compared with triazoles (RR = 0.47; 95 % CI, 0.33–0.67). This meta-analysis revealed that echinocandins are as effective and safe as triazoles for the prophylaxis and treatment of patients with fungal infections.
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99
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Fan H, Liu F, Dong G, Ren D, Xu Y, Dou J, Wang T, Sun L, Hou Y. Activation-induced necroptosis contributes to B-cell lymphopenia in active systemic lupus erythematosus. Cell Death Dis 2014; 5:e1416. [PMID: 25210799 PMCID: PMC4225223 DOI: 10.1038/cddis.2014.375] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 07/30/2014] [Accepted: 08/01/2014] [Indexed: 02/07/2023]
Abstract
B-cell abnormality including excessive activation and lymphopenia is a central feature of systemic lupus erythematosus (SLE). Although activation threshold, auto-reaction and death of B cells can be affected by intrinsical and/or external signaling, the underlying mechanisms are unclear. Herein, we demonstrate that co-activation of Toll-like receptor 7 (TLR7) and B-cell receptor (BCR) pathways is a core event for the survival/dead states of B cells in SLE. We found that the mortalities of CD19(+)CD27(-) and CD19(+)IgM(+) B-cell subsets were increased in the peripheral blood mononuclear cells (PBMCs) of SLE patients. The gene microarray analysis of CD19(+) B cells from active SLE patients showed that the differentially expressed genes were closely correlated to TLR7, BCR, apoptosis, necroptosis and immune pathways. We also found that co-activation of TLR7 and BCR could trigger normal B cells to take on SLE-like B-cell characters including the elevated viability, activation and proliferation in the first 3 days and necroptosis in the later days. Moreover, the necroptotic B cells exhibited mitochondrial dysfunction and hypoxia, along with the elevated expression of necroptosis-related genes, consistent with that in both SLE B-cell microarray and real-time PCR verification. Expectedly, pretreatment with the receptor-interacting protein kinase 1 (RIPK1) inhibitor Necrostatin-1, and not the apoptosis inhibitor zVAD, suppressed B-cell death. Importantly, B cells from additional SLE patients also significantly displayed high expression levels of necroptosis-related genes compared with those from healthy donors. These data indicate that co-activation of TLR7 and BCR pathways can promote B cells to hyperactivation and ultimately necroptosis. Our finding provides a new explanation on B-cell lymphopenia in active SLE patients. These data suggest that extrinsic factors may increase the intrinsical abnormality of B cells in SLE patients.
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100
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Kao W, Gu R, Jia Y, Wei X, Fan H, Harris J, Zhang Z, Quinn J, Morand EF, Yang YH. A formyl peptide receptor agonist suppresses inflammation and bone damage in arthritis. Br J Pharmacol 2014; 171:4087-96. [PMID: 24824742 PMCID: PMC4243981 DOI: 10.1111/bph.12768] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 03/20/2014] [Accepted: 04/28/2014] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND AND PURPOSE Annexin A1 (AnxA1) is an endogenous anti-inflammatory protein and agonist of the formyl peptide receptor 2 (FPR2). However, the potential for therapeutic FPR ligands to modify immune-mediated disease has been little explored. We investigated the effects of a synthetic FPR agonist on joint disease in the K/BxN model of rheumatoid arthritis (RA) and RA fibroblast-like synoviocytes (FLS). EXPERIMENTAL APPROACH Arthritis was induced by injection of K/BxN serum at day 0 and 2 in wild-type (WT) or AnxA1(-/-) mice and clinical and histopathological manifestations measured 8-11 days later. WT mice were given the FPR agonist compound 43 (Cpd43) (6 or 30 mg·kg(-1) i.p.) for 4 days. Effects of AnxA1 and Cpd43 on RANKL-induced osteoclastogenesis were assessed in RAW 264.7 cells and human RA FLS and macrophages. KEY RESULTS Treatment with Cpd43 before or after the onset of arthritis reduced clinical disease severity and attenuated synovial TNF-α and osteoclast-associated gene expression. Deletion of AnxA1 in mice exacerbated arthritis severity in the K/BxN model. In vitro, Cpd43 suppressed osteoclastogenesis and NFAT activity elicited by RANKL, and inhibited IL-6 secretion by mouse macrophages. In human RA joint-derived FLS and monocyte-derived macrophages, Cpd43 treatment inhibited IL-6 release, while blocking FPR2 or silencing AnxA1 increased this release. CONCLUSIONS AND IMPLICATIONS The FPR agonist Cpd43 reduced osteoclastogenesis and inflammation in a mouse model of RA and exhibited anti-inflammatory effects in relevant human cells. These data suggest that FPR ligands may represent novel therapeutic agents capable of ameliorating inflammation and bone damage in RA.
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MESH Headings
- Animals
- Annexin A1/deficiency
- Annexin A1/metabolism
- Arthritis, Experimental/drug therapy
- Arthritis, Experimental/metabolism
- Arthritis, Experimental/pathology
- Arthritis, Rheumatoid/drug therapy
- Arthritis, Rheumatoid/metabolism
- Arthritis, Rheumatoid/pathology
- Bone and Bones/drug effects
- Bone and Bones/metabolism
- Bone and Bones/pathology
- Cells, Cultured
- Disease Models, Animal
- Inflammation/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Phenylurea Compounds/administration & dosage
- Phenylurea Compounds/chemistry
- Phenylurea Compounds/pharmacology
- Pyrazoles/administration & dosage
- Pyrazoles/chemistry
- Pyrazoles/pharmacology
- Receptors, Formyl Peptide/agonists
- Receptors, Formyl Peptide/metabolism
- Structure-Activity Relationship
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