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OBJECTIVE To separate and identif y the chemical constituen ts in 70％ ethanol extract of Sabia parviflora ，and to preliminarily evaluate their in vitro antioxidant activity. METHODS The chemical constituents were separated and purified by silica gel，ODS reversed-phase silica gel ，Sephadex-LH20 column and preparative high performance liquid chromatography. The structures of the isolated compounds were identified by 1H-NMR，13C-NMR and ESI-MS. The in vitro antioxidant activities of the compounds were investigated by 2，2-diphenyl-1-picrylhydrazyl radical （DPPH·），2，2′-azino-bis（3-ethylbenzothiazoline-6- sulfonate）diammonium radical （ABST+）and hydroxyl radical （OH·）. RESULTS A total of 9 compounds were isolated from the 70％ ethanol extracts of S. parviflora . They were identified as rutin （1），diiononyl phthalate （2），dibutyl phthalate （3），vomifoliol （4），rhododendrol（5），quercetin-3-O-gentiobioside（6），narcissoside（7），kaempferol-3-O-rutinoside（8）and bonaroside （9）. The in vitro antioxidant results showed that compound 1-9 showed certain in vitro antioxidant activity ，and the half scavenging concentrations of compound 1，6，7 and 8 to DPPH ·，ABST+，OH·were lower than 70 μg/mL. CONCLUSIONS Vomifoliol， rhododendrol and bonaroside are isolated from S. parviflora for the first time ，and rutin ，quercetin-3-O-gentiobioside，narcissoside and kaempferol- 3-O-rutinoside show good in vitro antioxidant activity.
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OBJECTIVE To isolate and ide ntify the chemical constituents of the root of Ardisia virens and preliminarily evaluate the in vitro anti-inflammatory activity of the compounds. METHODS The ethyl acetate extraction part from 70％ ethanol extract of the root of A. virens were separated and purified by silica gel column chromatography ，ODS column chromatography ， etc. The structures of the compounds were identified according to physical and chemical properties and spectral data. The inflammation model of RAW 264.7 cells was induced by lipopolysaccharide ，and anti-inflammatory activity of the compound was investigated by MTT assay. RESULTS A total of 11 compounds were isolated from the ethyl acetate extraction part ，and were identified as cyclamiretin A （1），α-spinasterol （2），（3S，5R，6S，7E）-3，5，6-trihydroxy-7-megastigmen-9-one （3）， （+）-angelicoidenol（4），octadeca-dienoic acid- 2，3-dihydroxypropyl ester （5），α-linolenic acid （6），glycerol monooleate （7），5， 5′-（4，7-hexadecadlene-1，16-diyl）bisresorcinol（8），1-（3，5-dihydroxyphenyl）heptan-1-one（9），5-heptylresorcinol and （10） 5-n-nonylresorcinol（11）. The in vitro anti-inflammatory results showed that 80，40，20，10，5 μg/mL of compounds 2，8，9 and 10 could reduce the cell survival rate in different degrees. CONCLUSIONS Compounds 1-11 are isolated from this plant for the first time，and compound 8 is a new natural product. Compound 2，8，9 and 10 show certain anti-inflammatory activity in vitro .
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Henoch-Schonlein purpura (HSP) is one of the most common clinical manifestations of systemic small vasculitis in children with non-thrombocytopenic, and mainly manifested as skin purpura, arthritis, gastrointestinal symptoms and Henoch-Schonlein purpura nephritis (HSPN). The severity of renal involvement is the main factor determining the long-term prognosis of children with HSP.Studies have revealed that the determination of pentraxin 3 (PTX3) in serum can be used for early diagnosis of HSPN and prediction of renal injury.In this paper, the origin, gene and protein structure, function, potential relationship and mechanism of action between PTX3 and HSP were discussed, so as to provide new ideas for the early diagnosis and treatment of HSPN.
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The tRNA-derived fragments (tRF and tiRNA) are a newly discovered type of non-coding RNA (ncRNA) that has been found to be stably expressed in peripheral blood. Studies have shown that tRF and tiRNA play important roles in human tumors by regulating multiple processes, including gene expression and silencing, cell proliferation and apoptosis, and protein translation. The tissue-speci-ficity, high abundance, and stability of tRF and tiRNA, along with their broad-spectrum functional roles, confer them significant advan-tages for use in the field of oncology research. There is increasing evidence that aberrantly expressed tRF and tiRNA may be potential biomarkers or therapeutic targets for tumor diagnosis and prognosis. This paper summarizes the source, structure, biological charac-teristics, and functions of different tRF and tiRNA subtypes and explores their potential relationship with tumors and their underlying mechanisms in order to provide a novel idea for the early diagnosis and targeted therapy of tumors.
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Objective: To analyze the effects of different doses of flurbiprofen and other analgesic drugs on the postoperative analgesia in the Enhanced Recovery After Surgery (ERAS) . Methods: 98 patients with jaw cysts or multiple impact teeth were retrospectively analyzed. Patients were divided into 3 groups by the drug scheme: flurbiprofen 250 mg + 0. 9％ NS to 100 ml (group Ⅰ, n =32), sulfentanil 100 μg + azasetron 20 mg + 0. 9％ NS to 100 ml (group Ⅱ, n = 34), flurbiprofen 200 mg + sulfentanil 50 μg + azasetron 20 mg + 0. 9％ NS to 100 ml (group Ⅲ, n = 32) . Analgesic effects were evaluated at 3 h, 1 d and 2 d after surgery with Wong-Baker expression scale and numeric rating scale (NRS) . Questionnaire survey was also used to evaluate degree of satisfaction on analgesia. Results: Analgesia effective rate of group Ⅰ, Ⅱ and Ⅲ was 40. 62％, 67. 65％ and 68. 75％ respectively (P ＜0. 05) . Degree of satisfaction on analgesia of group Ⅰ, Ⅱ and Ⅲ was 71. 87％, 58. 82％ and 93. 75％ respectively (P ＜ 0. 05) .Conclusion: Flurbiprofen combined with sulfentanil has good analgesic effects and low side effects in the maxillofacial surgery of jaw cysts and multiple impact teeth.
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Objective To establish a method for determination of the content of Forsythoside A in Yinqiaosan granules . Methods HPLC method was adopted to carry on the determination .Welch Ultimate XB‐C18 column (250 mm × 4 .6 mm ,5μm) was used with the mobile phase of methanol‐0 .2% Glacial acetic acid solution by gradient elution . The flow rate was 1 .0 ml/min ,the detection wavelength was 330 nm ,and the column temperature was 20 ℃ .Results Forsythoside A showed a good linear relationship at the range from 0 .080 3~3 .211 μg (r=1 .000) .The average recovery rates were 103 .78% ,and RSD=0 .82% .Conclusion The method was convenient and accurate .Meanwhile ,it also has good specificity and reproducibili‐ty .It can be used effectively for the quality control of Yinqiaosan granules .
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To compare the performance of ArcCheck and film verification for volumetric intensity modulated arc therapy (VMAT) in the treatment of nasopharyngeal carcinoma, and to study the feasibility of ArcCheck in VMAT dosimetric verification. Five patients of nasopharyngeal carcinoma treated with VMAT were enrolled in this study. Dose verification was carried out by ArcCheck and film respectively. The result showed that there were no significant differences between ArcCheck and film verification. ArcCheck software can obtain three dimensional dose distribution directly with simple operation. It is convenient for ArcCheck to be used for VMAT dosimetric verification.