1.Delayed open reduction and internal fixation for the Cotton's fracture
Rui XIA ; Rong KONG ; Shiyuan FANG
Orthopedic Journal of China 2006;0(12):-
0.05).The activities degrees of ankle joint also had no statistical difference.[Conclusion]According to the extent of the displacement of Cotton's fracture,we should make the right operative order and the incision,thus we can get results with anatomic reduction and shorten the operative time,which can help the patients make early exercises and get satisfactory effect.
3.The technologies of small molecule ligand-target protein interaction and high throughput ligand screening
Rui-fang DONG ; Yuan-zheng XIA ; Ling-yi KONG
Acta Pharmaceutica Sinica 2023;58(11):3242-3253
The interaction of drug and target protein is a critical part of new drug discovery. It is the premise for drugs to exert therapeutic effects by targeting specific binding sites of target proteins and thereby affecting its pharmacological activity. Currently, a variety of techniques are exploited to detect the interaction between drug ligands and target proteins. For example, cellular thermal shift assay (CETSA) and differential scanning fluorimetry (DSF) based on thermodynamics, mass spectrometry and nuclear magnetic resonance technology, etc. In addition, high-throughput ligand screening technology provides technical convenience for the search of specific ligand, and is a powerful tool to efficiently identify the interaction between drug ligand and target protein. Here, we summarize the detection techniques of interaction between small molecules and target proteins, and discuss the application of high-throughput ligand screening technology in drug research.
4.Label-free target identification for natural products based on proteomics
Rui-fang DONG ; Yuan-zheng XIA ; Ling-yi KONG
Acta Pharmaceutica Sinica 2023;58(8):2000-2015
Target identification and verification of natural products is an important and challenging work in the field of chemical biology. It is also an important job for researchers to apply chemical proteomics technology to biomedicine in order to identify target proteins of natural products. Target identification is critical to understanding its mechanisms and developing natural products as molecular probes and potential therapeutic drugs. Traditional approaches of small molecule target identification based on affinity have been shown to be successful, such as click-chemical probes, radioisotope labeling or photosensitized small-molecule probes. Nevertheless, these technologies require purified candidate target proteins, and modified small molecules with probes or linkers, such as adding agarose beads, biotin labels, fluorescent labeling or photo-affinity labeling. Many structure-activity relationship studies should be performed to ensure that the addition of small molecule labels undisturbed the original biological activity of the small molecules. Unfortunately, all these modifications are likely to alter their biological activity or binding specificity. To overcome the bottleneck of "target recognition", researchers have developed a series of new techniques for unmodified drug target identification. In this article, we reviewed the target identification techniques of natural product without structural modification in order to provide reference for the development of natural products.
5.Antimicrobiai bioceramic combined with chitosan and ceftriaxone sodium:Preparation and its in vitro and in vivo study
Rui XIA ; Shi-yuan FANG ; Wei XU ; Hang DONG ; Yue'e FANG
Chinese Journal of Microsurgery 2009;32(6):474-476
Objective To synthesize antimicrobial bioceramic using chitosan and calcium phosphate cements mixed with ceftriaxone sodium. Methods The bioceramic was synthesized through the hardening of chitosan liquid combined with calcium phosphate cements and cefiriaxone sodium.The released ceftriaxone sodium was studied according to the linear equation between UV-VIS absorbance to concentration.The in vitro bactefiostatic effect of the chosen bioceramic was investigated via the microbiological method.The model of rats'contaminated bone defect were deployed to study the antimicrobial performance of the bioceramic. Results The best synthesis condition was chosen at:0.1g calcium phosphate cements and 10.4 mg ceftriaxone sodium combined with 2.4 ml hardening liquid C.then keeping the mixture at 60℃ and 100%humidity for 24 h.In vitro release of the resulting antimicrobial bioceramic remained stable,while that of ceftriaxone sodium lasted for a week,higher than the minimal inhibitory concentration(MIC) of Staphylococcus aureus.As proved by the WBC number and tissue sectioning,a lighter inflammatory response of treatment group was observed as compared with the control group. Conclusion The antimicrobial bioceramic combined with chitosan and ceftriaxone sodium shows promising antimicrobial performance.
6.A new cyclic diarylheptanoid from the bark of Myrica rubra.
Sheng-nan SHEN ; Fang-bo XIA ; He LI ; Ya-min LIU ; Rui-le PAN
Acta Pharmaceutica Sinica 2015;50(6):746-748
To study the chemical constituents from the bark of Myrica rubra, fourteen compounds were isolated from the methanolic extract using various chromatographic techniques, including silica gel, Sephadex LH-20 and preparative HPLC. Their structures were identified on the basis of chemical properties and spectroscopic data, as 3, 5-dimethoxy-4-hydroxymyricanol (1), myricanol (2), myricanone (3), myricanol 11-sulfate (4), myricitrin (5), quercetin (6), quercetin-3-rhamnoside (7), tamarixol (8), uvaol (9), ursolic acid (10), taraxerol (11), myricadiol (12), β-sitosterol (13) and β-daucosterol (14). Among them, compound 1 is a new compound, named as 3, 5-dimethoxy-4-hydroxymyricanol, compounds 8, 9 were isolated from the genus Myrica for the first time.
Diarylheptanoids
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chemistry
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isolation & purification
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Myrica
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chemistry
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Phytochemicals
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chemistry
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isolation & purification
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Plant Bark
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chemistry
7.Framework for assessing health related quality of life of Kaschin-Beck disease: a qualitative research
Hua, FANG ; Xiong, GUO ; Chuan-tao, XIA ; Ming, LIU ; Feng-ling, REN ; Rui, DONG
Chinese Journal of Endemiology 2012;31(3):329-332
ObjectiveTo identify the framework for assessing health related quality of life(HRQOL) of Kaschin-Beck disease(KBD),in order to reflect the impact of KBD on quality of life in patients with the disease.MethodsQualitative descriptive research was adopted.Semi-open ended questions were developed by using the World Health Organization(WHO) definitions of health and quality of life.Group interview and face to face interviews were conducted on 48 patients with KBD and 29 health care experts on KBD in Linyou and Yongshou counties,Shaanxi province,which were higher prevalence areas of KBD.Content template analysis was conducted and the template was based on the WHOQOL-100's framework.ResultsThe framework of HRQOL for KBD included four domains:physical activity,familial/social support,economic and psychological state.There were also eleven facets which were:pain and discomfort,physical function and activity limitation,diet and sleeping,social relationship,concerns of family responsibilities,social support,economic,housing and the surrounding environment,appearance concerns,mental health,and general state of health.The total entries were 69.ConclusionsThe framework for assessing HRQOL of KBD is established.The framework highlights the impact of KBD on the patients' quality of life with higher specificity.
8.The Role of Hydrogen Sulfide in the Effect of SB203580 on Proliferation and Apoptosis of Hepatic Stellate Cells
Xia XU ; Rui LI ; Qiang REN ; Fang LIU ; Lixiu SONG ; Yong ZHENG ; Weigang CHEN
Tianjin Medical Journal 2013;(11):1095-1098
Objective To study the role of hydrogen sulfide (H2S) in the effect of SB203580 on proliferation and apoptosis of hepatic stellate cells and the effects of H2S on expressions of collagenⅠand collagenⅢmRNA in hepatic stel-late cells. Methods There were five groups of HSC-T6 cells in this study including control group (DMEM medium contain-ing10%fetal bovine serum), dimethyl sulfoxide (DMSO) group, sodium hydrosulfide (NaHS)group,SB203580 (SB)group and SB+NaHS group. MTT method was used to detect the cell proliferation and inhibition rate of HSC-T6 cells treated by SB203580 and H2S. The apoptotic rate of HSC-T6 cells was detected by flow cytometry with annexin V-FITC/PI double staining. RT-PCR was used to detect the expressions of collagenⅠand collagenⅢmRNA in HSC-T6. Results The apop-totic rate of HSC-T6 cells was significantly higher in SB group and SB+NaHS group than that of control group, and the rate was significantly higher in SB+NaHS group than that of SB group (P<0.05). There was no significant difference in the apop-totic rate of HSC-T6 cells between DMSO and NaHS groups than that of control group. The expressions of collagenⅠand col-lagenⅢmRNA were found in five groups of cells. There was a higher expression of collagenⅠand collagenⅢmRNA in NaHS group than that of control group (P<0.05). The expressions of collagenⅠand collagenⅢmRNA were significantly lower in SB group and SB+NaHS group than those of control group and NaHS group (P<0.05). Conclusion H2S activated P38MAPK signal pathway. And P38MAPK was specifically blocked by SB203580 in HSC-T6 cells, which inhibited the cell proliferation stimulated by H2S and promoted the apoptosis.
9.Design and application of intra-abdominal pressure measuring device for children on peritoneal dialysis
Pei LU ; Qing ZHOU ; Xia SHEN ; Peilian YAO ; Qian SHEN ; Hong XU ; Xiaoyan FANG ; Rui ZHAO
Chinese Journal of Nephrology 2021;37(4):341-346
Objective:To design an intra-abdominal pressure measuring device applied to children on peritoneal dialysis (PD), and evaluate the feasibility and safety of the application of the device.Methods:The device consisted of a three-way stopcock with extension tubing, a three-way stopcock, a manometer tube, and a "Y" system peritoneal dialysis bag. The intraperitoneal pressure of different fill volumes was measured when a child was supine and relaxed in a horizontal position. The subjects of the study were children who received PD at the Pediatric Hospital of Fudan University from May 2019 to February 2020 and had PD dialysis age of>1 month. The children's demographic and clinical information were collected. During the measurement, the child’s complaints of pain, bloating, vital signs, and catheter-related contamination were recorded. Additionally, the occurrence of dialysis-related infections and complications during the hospitalization and outcomes of PD after three months of the measurement were tracked. A scatter plot and Pearson correlation test were used to explore the correlation between fill volumes and the intraperitoneal pressure.Results:Nine PD children were included in our study. The age of the children was (8.4±4.7) years old. The body surface area is (0.84±0.29) m 2. The intraperitoneal pressure was (12.6±1.9) cmH 2O at the fill volume of 1 000 ml/m 2 and (13.8±1.9) cmH 2O at the fill volume of 1 200 ml/m 2. The measurement was smoothly and safely taken without any case of contamination and dialysis-related infections during the hospitalization. After three months of the measurement, one child was transferred to temporary hemodialysis due to the aggravation of the umbilical hernia. Conclusions:The intraperitoneal pressure measuring device is feasible and safe to perform among children with PD. It can achieve non-invasive and continuous measurement of intra-abdominal pressure, and has guiding significance for the dialysis prescription of children with PD.
10.Health literacy levels in diabetes patients with poor glycemic status in communities of Shanghai
Weizhong KONG ; Xiaona LIU ; Xiaoyan ZHANG ; Hong FANG ; Qinghua XIA ; Rui LI ; Peng ZHOU ; Yujie YAN ; Limin YIN ; Wanghong XU
Fudan University Journal of Medical Sciences 2017;44(2):143-149
Objective To investigate the levels of literacy and numeracy in type 2 diabetes patients with poor glycemic status in communities of Shanghai,China,and to evaluate their associations with blood glucose level.Methods A total of 800 type 2 diabetes patients with recent HbA1c≥7.5% or fasting plasma glucose level ≥10 mmol/L were recruited from 8 communities in Minhang district and Changning district of Shanghai,China,and were interviewed using a structured questionnaire during February 2015 and March 2016.Literacy and numeracy levels of all patients were evaluated using the validated Health Literacy Management Scale (HeLMS) and the 5-item version Diabetes Numeracy Test (DNT-5),respectively.Results The patients included in this study were observed to have higher levels of health literacy,with a median score of HeLMS being 116 [interquartile range (IQR),108-120] and a median correct rate of DNT-5 of 80% (IQR,60%-100%).Age,educational level and occupation were significantly related with health literacy levels and numeracy.Sex and income were closely related with health literacy levels.HeLMS score was not significantly associated with HbA1c level (P =0.383),while the lower correct rate of DNT-5 was linked with a higher level of HbA1c.The median HbA1c level was 8.3% (IQR 7.7%-9.4%) in the patients with the lowest tertile of DNT-5 correct rate,significantly higher than 8.2% (IQR:7.5%-9.2%) in the medium and 8.0% (IQR:7.5 %-8.8 %) in the highest tertile group (P =0.009).Conclusions Diabetes patients with poor glycemic status in communities of Shanghai have high levels of health literacy,which was significantly related with age,sex,educational level,occupation and income.Ability in numeracy may be a more important influence factor than health literacy for glycemic status of diabetes patients.