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Li H, Wei FY, Deng CQ, Zhang L, Zhu XY, Zhang LY, Wu BJ, Bai JJ, Ding LH. [Low-dose argatroban emerging salvage therapies for heparin-induced thrombocytopenia during artificial liver treatment: a case report]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:1198-1200. [PMID: 35045638 DOI: 10.3760/cma.j.cn501113-20201215-00655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- H Li
- Department of Infectious Diseases, First Hospital, Shanxi Medical University, Taiyuan, 030001, China
| | - F Y Wei
- Department of Infectious Diseases, First Hospital, Shanxi Medical University, Taiyuan, 030001, China
| | - C Q Deng
- Department of Infectious Diseases, First Hospital, Shanxi Medical University, Taiyuan, 030001, China
| | - L Zhang
- Department of Infectious Diseases, First Hospital, Shanxi Medical University, Taiyuan, 030001, China
| | - X Y Zhu
- Department of Infectious Diseases, First Hospital, Shanxi Medical University, Taiyuan, 030001, China
| | - L Y Zhang
- Department of Infectious Diseases, First Hospital, Shanxi Medical University, Taiyuan, 030001, China
| | - B J Wu
- Department of Infectious Diseases, First Hospital, Shanxi Medical University, Taiyuan, 030001, China
| | - J J Bai
- Department of Infectious Diseases, First Hospital, Shanxi Medical University, Taiyuan, 030001, China
| | - L H Ding
- Department of Infectious Diseases, First Hospital, Shanxi Medical University, Taiyuan, 030001, China
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Zou G, Liao XJ, Peng Q, Chen GD, Wei FY, Xu ZX, Zhao BX, Xu SH. A new α-pyrone from the deep-sea actinomycete Nocardiopsis dassonvillei subsp. dassonvillei DSM 43111(T). J Asian Nat Prod Res 2017; 19:1232-1238. [PMID: 28349726 DOI: 10.1080/10286020.2017.1307186] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 03/13/2017] [Indexed: 06/06/2023]
Abstract
A new α-pyrone, nocapyrone S (1), together with five known compounds (2-6), were isolated from the deep-sea actinomycete Nocardiopsis dassonvillei subsp. dassonvillei DSM 43111(T). Their structures were determined by spectroscopic analyses. The absolute configuration of 1 was established by quantum approaches. Cytotoxic activity of 1 was evaluated against K562, MCF-7, SGC7901, A375, Hela, and HepG2 cell lines.
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Affiliation(s)
- Ge Zou
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
- b College of Pharmacy, Jinan University , Guangzhou 510632 , China
| | - Xiao-Jian Liao
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Qi Peng
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Guo-Dong Chen
- b College of Pharmacy, Jinan University , Guangzhou 510632 , China
| | - Fang-Ying Wei
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Zheng-Xiong Xu
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Bing-Xin Zhao
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Shi-Hai Xu
- a Department of Chemistry , Jinan University , Guangzhou 510632 , China
- b College of Pharmacy, Jinan University , Guangzhou 510632 , China
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Wang XJ, Bao BX, Wei FY, Zhang JZ. [Clinical effects of simple hallux valgus surgery for transfer metatarsalgia]. Zhonghua Yi Xue Za Zhi 2017; 97:2737-2741. [PMID: 28954330 DOI: 10.3760/cma.j.issn.0376-2491.2017.35.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the clinical effects of simple hallux valgus surgery for transfer metatarsalgia. Methods: From September 2011 to November, a total of 21 patients(30 feets)with transfer metatarsalgia of hallux valgus and underwent the simple hallux valgus surgery without lateral metatarsal shortening osteotomy In Department of Orthopedics, Beijing Tongren Hospital, Capital Medical University, were enrolled in the study.The hallux valgus angle (HVA), intermetatarsal angle (IMA) , AOFAS scale and analogue score (VAS) were measured pre-operation and a half year, one year, two years after operation.The data were measured repeatedly and analyzed with analysis of variance. Results: The mean preoperative HVA changed [(39.6±9.7), (14.2±7.9), (14.8±7.9), (13.2±6.5)°] at 6 months, 1 year and 2 years follow-up; the mean IMA decreased [(13.8±4.0), (4.5±4.3), (5.8±3.9), (5.4±4.9)°] at 6 months, 1 year and 2 years follow-up(all P<0.001).63.5% of metatarsalgia cases improved, and 73.1% of painful callosities disappeared postoperatively.All the patients do not require further surgeries. The mean AOFAS for hallux , AOFAS for lesser toes and VAS were improved from 58.96 to 95.42, from 84.38 to 92.04 and from 7.5 to 1.3, respectively. All the results are statistically significant(P<0.001). Conclusion: These results suggest that a simple osteotomy of the first metatarsal provides excellent outcomes with a low rate of complications when compared with the combining lateral metatarsal shortening osteotomy.
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Affiliation(s)
- X J Wang
- Department of Orthopedics, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
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Song ZJ, Ran W, Wei FY. One-step approach for the synthesis of CoFe 2O 4@rGO core-shell nanocomposites as efficient adsorbent for removal of organic pollutants. Water Sci Technol 2017; 75:397-405. [PMID: 28112667 DOI: 10.2166/wst.2016.520] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
CoFe2O4-reduced graphene oxide nanocomposites (CFG) have been successfully synthesized via one-step solvothermal method. The prepared CFG are characterized by X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, field emission scanning electron microscopy (FESEM), vibrating sample magnetometer and so on. The FESEM results show that CFG have uniform core-shell structure with an average diameter of about 75 nm and the thickness of the outer graphene shell is about 15-20 nm. The mass ratio of CoFe2O4 to graphene oxide is a key factor affecting the formation of core-shell hybrids. CFG display much higher adsorption capacity for anionic dyes than cationic dyes owing to the favorable electrostatic interaction. The adsorption capacity for methyl orange is observed as high as 263 mg g-1 at 298 K, and the adsorption isotherms follow the Langmuir model. Furthermore, the specific saturation magnetization (Ms) of CFG is 32.8 emu g-1, and the as-synthesized nanocomposites can be easily separated by external magnetic field after adsorption. The results suggest that CFG have great potential for the practical industrial wastewater treatment.
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Affiliation(s)
- Z J Song
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei 230009, China E-mail:
| | - W Ran
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei 230009, China E-mail:
| | - F Y Wei
- School of Chemistry and Chemical Engineering, Hefei University of Technology, Tunxi Road 193, Hefei 230009, China E-mail:
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Wei FY, Chow SK, Leung KS, Qin J, Guo A, Yu OL, Li G, Cheung WH, Cheung WH. Low-magnitude high-frequency vibration enhanced mesenchymal stem cell recruitment in osteoporotic fracture healing through the SDF-1/CXCR4 pathway. Eur Cell Mater 2016; 31:341-54. [PMID: 27215741 DOI: 10.22203/ecm.v031a22] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Low-magnitude high-frequency vibration (LMHFV) has been proven to promote osteoporotic fracture healing. Mechanical stimulation was reported to enhance SDF-1/CXCR4 signalling in mesenchymal stem cells (MSCs). We hypothesised that LMHFV promoted osteoporotic fracture healing by enhancing MSC migration through the SDF-1/CXCR4 pathway. 152 ovariectomised SD-rats received closed femoral fracture in groups of vibration+MSC (VMG) (20 min/d, 5 d/week), vibration+MSC+AMD3100 (VMAG; AMD, a CXCR4 inhibitor) (1 mg/kg/d, intraperitoneal), MSC (MG) (1 × 106 MSC, intracardiac) or control (CG) for a treatment duration of 2, 4 or 8 weeks. MSC migration was evaluated by ex-vivo green fluorescent protein signal in the callus; and fracture healing was examined by weekly radiographs, endpoint computed-tomography and mechanical test. At week-2 and week-4, ex-vivo callus GFP intensity of VMG was significantly higher than other groups (p < 0.05). From week-2 to week-3, both callus width and callus area in VMG were significantly larger; and from week-7 to week-8, smaller than other groups (p < 0.05). At week-8, high-density bone volume fraction, bone volume fraction, bone mineral density and stiffness in VMG were significantly higher than other 3 groups (p < 0.05). This study demonstrated that LMHFV promoted MSC migration and fracture healing in osteoporotic rats. This effect was attenuated by CXCR4 inhibitor, providing strong evidence that SDF-1-mediated MSC migration was one of the important mechanisms through which LMHFV enhanced fracture healing.
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Affiliation(s)
- F Y Wei
- General Office, Department of Orthopaedics and Traumatology, 5/F Lui Che Woo Clinical Sciences Building, Prince of Wales Hospital, Shatin, Hong
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Kaplansky BD, Wei FY, Reecer MV. Prevention strategies for occupational low back pain. Occup Med 1998; 13:33-45. [PMID: 9477409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Among the strategies to prevent occupational LBP, only job design/redesign and exercise programs appear to have a protective effect; however, the studies pertaining to exercise remain contradictory, and controlled trials evaluating ergonomics interventions are lacking. Risk factor modification is beneficial from a general health perspective, but studies are contradictory with respect to its role in prevention of LBP. There is no conclusive evidence to support the use of structured education programs in the workplace, and the cost of these programs is not justified. There is no support for the use of orthotics or worker selection methods based on the available data, and these methods should not be employed in the workplace. Despite efforts from the medical community and industry, there is little evidence that there has been a substantial impact on the prevalence of LBP and disability. Further work is needed in both occupational and nonoccupational settings to determine effective prevention strategies for LBP in the future.
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Affiliation(s)
- B D Kaplansky
- Orthopaedics Northeast, PC, Fort Wayne, IN 46825-5890, USA
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Robinson M, Gustad TR, Wei FY, David CS, Storey N. Adult worm homogenate of the nematode parasite Heligmosomoides polygyrus induces proliferation of naive T lymphocytes without MHC restriction. Cell Immunol 1994; 158:157-66. [PMID: 8087862 DOI: 10.1006/cimm.1994.1264] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The documented in vitro response of mouse T cells to parasite antigens is typically anamnestic and H-2 restricted. As yet, there have been no confirmed reports of the existence of a non-H-2-restricted, superantigen type of response to the antigens of metazoan parasites. Reported here are data which show that antigens produced by the adult stage of the nematode parasite Heligmosomoides polygyrus (= Nematospiroides dubius) can stimulate naive T cells in vitro to proliferate and produce IL-2. A series of T cell hybridomas has been used to show that adult worm homogenate of H. polygyrus can stimulate parasite antigen naive T cells. This response is independent of the H-2 haplotype of the antigen-presenting accessory cells and does not appear to be influenced by the presence or absence of an H-2 E molecule. However, successful presentation of the H. polygyrus superantigen does require the presence of metabolically active accessory cells and fixation of the accessory cells with paraformaldehyde abrogates the response of the target cells. This discovery has important implications for the study of the role of superantigens in host/parasite interactions and will also help to expand current knowledge about the relationship between chronic intestinal nematodes and the host immune system.
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Affiliation(s)
- M Robinson
- Department of Veterinary and Microbiological Sciences, North Dakota State University, Fargo 58105
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Patarca R, Wei FY, Iregui MV, Cantor H. Differential induction of interferon gamma gene expression after activation of CD4+ T cells by conventional antigen and Mls superantigen. Proc Natl Acad Sci U S A 1991; 88:2736-9. [PMID: 1707172 PMCID: PMC51313 DOI: 10.1073/pnas.88.7.2736] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We have analyzed cytokine gene expression by a murine CD4+ T-cell clone that expresses three forms of T-cell recognition. The clone employs a V beta 6-containing T-cell receptor to recognize (i) a self class II major histocompatibility complex and an ovalbumin-derived peptide (OVA), (ii) an I-Ab alloantigen, and (iii) Mls-1a. All three responses are accompanied by similar levels of cell proliferation. However, although interferon gamma gene expression is strongly induced during both physiological recognition of the OVA peptide and allogeneic major histocompatibility complex recognition, expression of this gene was not detected during the Mls response. These studies indicate that Mls recognition is functionally distinct from T-cell recognition of peptides and alloantigens and leads to an alternative pattern of cytokine gene expression. They also suggest the possibility that encounter with these two classes of T-cell antigen in vivo may generate subsets of T helper cells that display different patterns of cytokine gene expression.
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Affiliation(s)
- R Patarca
- Department of Pathology, Harvard Medical School, Dana, Farber Cancer Institute, Boston, MA 02115
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Patarca R, Wei FY, Singh P, Morasso MI, Cantor H. Dysregulated expression of the T cell cytokine Eta-1 in CD4-8- lymphocytes during the development of murine autoimmune disease. J Exp Med 1990; 172:1177-83. [PMID: 1976736 PMCID: PMC2188609 DOI: 10.1084/jem.172.4.1177] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The development of autoimmune disease in the MRL/MpJ-lpr inbred mouse strain depends upon the maturation of a subset of T lymphocytes that may cause sustained activation of immunological effector cells such as B cells and macrophages. We tested the hypothesis that abnormal effector cell activation reflects constitutive overexpression of a T cell cytokine. We found that a newly defined T cell cytokine, Eta-1, is expressed at very high levels in T cells from MRL/l mice but not normal mouse strains and in a CD4-8- 45R+ T cell clone. The Eta-1 gene encodes a secreted protein that binds specifically to macrophages, possibly via a cell adhesion receptor, resulting in alterations in the mobility and activation state of this cell type (Patarca, R., G. J. Freeman, R. P. Singh, et al. 1989. J. Exp. Med. 170:145; Singh, R. P., R. Patarca, J. Schwartz, P. Singh, and H. Cantor. 1990. J. Exp. Med. 171:1931). In addition, recent studies have indicated that Eta-1 can enhance secretion of IgM and IgG by mixtures of macrophages and B cells (Patarca, R., M. A. Lampe, M. V. Iregai, and H. Cantor, manuscript in preparation). Dysregulation of Eta-1 expression begins at the onset of autoimmune disease and continues throughout the course of this disorder. Maximal levels of Eta-1 expression and the development of severe autoimmune disease reflect the combined contribution of the lpr gene and MRL background genes.
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Affiliation(s)
- R Patarca
- Dana-Farber Cancer Institute, Department of Pathology, Harvard Medical School, Boston, Massachusetts 02115
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Patarca R, Singh RP, Wei FY, Iregui MV, Singh P, Schwartz J, Cantor H. Alternative pathways of T-cell activation and positive clonal selection. Immunol Rev 1990; 116:85-100. [PMID: 1977691 DOI: 10.1111/j.1600-065x.1990.tb00805.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- R Patarca
- Department of Pathology, Harvard Medical School, Dana-Farber Cancer Institute, Boston, MA 02115
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Patarca R, Freeman GJ, Singh RP, Wei FY, Durfee T, Blattner F, Regnier DC, Kozak CA, Mock BA, Morse HC, Jerrells TR, Cantor H. Structural and functional studies of the early T lymphocyte activation 1 (Eta-1) gene. Definition of a novel T cell-dependent response associated with genetic resistance to bacterial infection. J Exp Med 1989; 170:145-61. [PMID: 2787378 PMCID: PMC2189370 DOI: 10.1084/jem.170.1.145] [Citation(s) in RCA: 264] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
We describe a murine cDNA, designated Early T lymphocyte activation 1 (ETA-1) which is abundantly expressed after activation of T cells. Eta-1 encodes a highly acidic secreted product having structural features of proteins that bind to cellular adhesion receptors. The Eta-1 gene maps to a locus on murine chromosome 5 termed Ric that confers resistance to infection by Rickettsia tsutsugamushi (RT), an obligate intracellular bacterium that is the etiological agent for human scrub typhus. With one exception, inbred mouse strains that expressed the Eta-1a allele were resistant to RT infection (RicR), and inbred strains expressing the Eta-1b allele were susceptible (RicS). These findings suggest that Eta-1 is the gene inferred from previous studies of the Ric locus (5). Genetic resistance to RT infection is associated with a strong Eta-1 response in vivo and inhibition of early bacterial replication. Eta-1 gene expression appears to be part of a surprisingly rapid T cell-dependent response to bacterial infection that may precede classical forms of T cell-dependent immunity.
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Affiliation(s)
- R Patarca
- Laboratory of Immunopathology, Dana-Farber Cancer Institute, Boston, Massachusetts
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