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1.
China Journal of Chinese Materia Medica ; (24): 1463-1482, 2023.
Article in Chinese | WPRIM | ID: wpr-970618

ABSTRACT

Dolomiaea plants are perennial herbs in the Asteraceae family with a long medicinal history. They are rich in chemical constituents, mainly including sesquiterpenes, phenylpropanoids, triterpenes, and steroids. The extracts and chemical constituents of Dolomiaea plants have various pharmacological effects, such as anti-inflammatory, antibacterial, antitumor, anti-gastric ulcer, hepatoprotective and choleretic effects. However, there are few reports on Dolomiaea plants. This study systematically reviewed the research progress on the chemical constituents and pharmacological effects of Dolomiaea plants to provide references for the further development and research of Dolomiaea plants.


Subject(s)
Plant Extracts/pharmacology , Asteraceae , Triterpenes , Sesquiterpenes/pharmacology , Anti-Inflammatory Agents , Phytochemicals/pharmacology
2.
Journal of Peking University(Health Sciences) ; (6): 31-39, 2022.
Article in Chinese | WPRIM | ID: wpr-936109

ABSTRACT

OBJECTIVE@#To investigate the effect of porous surface morphology of zirconia on the proliferation and differentiation of osteoblasts.@*METHODS@#According to different manufacturing and pore-forming methods, the zirconia specimens were divided into 4 groups, including milled sintering group (M-Ctrl), milled porous group (M-Porous), 3D printed sintering group (3D-Ctrl) and 3D printed porous group (3D-Porous). The surface micromorphology, surface roughness, contact angle and surface elements of specimens in each group were detected by scanning electron microscope (SEM), 3D laser microscope, contact angle measuring device and energy-dispersion X-ray analysis, respectively. MC3T3-E1 cells were cultured on 4 groups of zirconia discs. The cell morphology of MC3T3-E1 cells on zirconia discs was eva-luated on 1 and 7 days by SEM. The cell proliferation was detected on 1, 3 and 5 days by cell counting kit-8 (CCK-8). After osteogenic induction for 14 days, the relative mRNA expression of alkaline phosphatase (ALP), type Ⅰ collagen (Colla1), Runt-related transcription factor-2 (Runx2) and osteocalcin (OCN) in MC3T3-E1 cells were detected by real-time quantitative polymerase chain reaction.@*RESULTS@#The pore size [(419.72±6.99) μm] and pore depth [(560.38±8.55) μm] of 3D-Porous group were significantly larger than the pore size [(300.55±155.65) μm] and pore depth [(69.97±31.38) μm] of M-Porous group (P < 0.05). The surface of 3D-Porous group appeared with more regular round pores than that of M-Porous group. The contact angles of all the groups were less than 90°. The contact angles of 3D-Ctrl (73.83°±5.34°) and M-Porous group (72.7°±2.72°) were the largest, with no significant difference between them (P>0.05). Cells adhered inside the pores in M-Porous and 3D-Porous groups, and the proliferation activities of them were significantly higher than those of M-Ctrl and 3D-Ctrl groups after 3 and 5 days' culture (P < 0.05). After 14 days' incubation, ALP, Colla1, Runx2 and OCN mRNA expression in 3D-Porous groups were significantly lower than those of M-Ctrl and 3D-Ctrl groups (P < 0.05). Colla1, Runx2 and OCN mRNA expressions in M-Porous group were higher than those of 3D-Porous group (P < 0.05).@*CONCLUSION@#The porous surface morphology of zirconia can promote the proliferation and adhesion but inhibit the differentiation of MC3T3-E1 cells.


Subject(s)
Cell Differentiation , Cell Proliferation , Ceramics , Osteoblasts , Osteogenesis , Porosity , Zirconium
3.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 217-226, 2022.
Article in Chinese | WPRIM | ID: wpr-940639

ABSTRACT

Smallanthus sonchifolius, a plant resource with both medicinal and edible values, has been taken as fruit for a long history. Studies have proved that phenolic acids, flavonoids, sesquiterpene lactones, and fructooligosaccharides are the major compounds in S. sonchifolius. The extract of S. sonchifolius demonstrates noticeable antioxidant, anti-inflammatory, antimicrobial, and anti-cancer effects, as well as the activities of lowering blood glucose level, regulating intestinal function and so on. The rhizomes and leaves of S. sonchifolius contain abundant phenolic acids, mainly caffeic acid and its derivatives, which endow S. sonchifolius with remarkable antioxidant effect. Moreover, these substances can reduce blood glucose by improving insulin sensitivity. Fructooligosaccharides are abundant in the tuber of this plant, which can improve intestinal function by regulating intestinal flora. The sesquiterpene lactones in glandular trichomes on the leaf surface can inhibit the proliferation of cancer cells, among which uvedafolin and enhydrofolin have particularly strong activities. Furthermore, the sesquiterpene lactones have obvious inhibitory effect on Gram-positive bacteria. In terms of structure, the number of epoxy groups is linked to the strength of anticancer and antimicrobial effects. In addition, S. sonchifolius contains other compounds such as volatile oils, fatty acids, sterols, diterpenes, p-hydroxyacetophenone derivatives, and octulosonic acid derivatives, thereby exhibiting the pharmacological effects of treating Alzheimer's disease, protecting kidney, and lowering blood lipids. However, the isolation and identification of the main compounds in S. sonchifolius need further exploration, and the mechanism of action remains to be studied. Here we summarized the principal chemical components and pharmacological activities of S. sonchifolius, aiming to give a clue for the comprehensive development and utilization of this plant.

4.
Chinese Journal of Biotechnology ; (12): 1-14, 2021.
Article in Chinese | WPRIM | ID: wpr-878538

ABSTRACT

Microbial fuel cell (MFC) is a bioelectrochemical device, that enables simultaneous wastewater treatment and energy generation. However, a few issues such as low output power, high ohmic internal resistance, and long start-up time greatly limit MFCs' applications. MFC anode is the carrier of microbial attachment, and plays a key role in the generation and transmission of electrons. High-quality bioelectrodes have developed into an effective way to improve MFC performance. Conjugated polymers have advantages of low cost, high conductivity, chemical stability and good biocompatibility. The use of conjugated polymers to modify bioelectrodes can achieve a large specific surface area and shorten the charge transfer path, thereby achieving efficient biological electrochemical performance. In addition, bacteria can be coated with nano-scale conjugated polymer and effectively transfer the electrons generated by cells to electrodes. This article reviews the recently reported applications of conjugated polymers in microbial fuel cells, focusing on the MFC anode materials modified by conjugated polymers. This review also systematically analyzes the advantages and limitations of conjugated polymers, and how these composite hybrid bioelectrodes solve practical issues such as low energy output, high inner resistance, and long starting time.


Subject(s)
Bacteria , Bioelectric Energy Sources , Electricity , Electrodes , Polymers , Water Purification
5.
Journal of Peking University(Health Sciences) ; (6): 770-775, 2021.
Article in Chinese | WPRIM | ID: wpr-942251

ABSTRACT

OBJECTIVE@#To evaluate the effects of femtosecond laser treated microgrooved surface on microscopic topography, phase transformation, and three-points flexural strength of zirconia, and to provide reference for surface microstructure optimization of zirconia implant.@*METHODS@#According to different surface treatment methods, 57 computer aided design/computer aided manufacture (CAD/CAM) zirconia bars (20.0 mm×4.0 mm×1.4 mm) were evenly divided into three groups: sintered group, no treatment after sintering, taken as control; sandblasted group, sandblasted with 110 μm aluminium oxide (Al2O3) after sintering; microgrooved group, femtosecond laser fabricated microgrooves with 50 μm width, 30 μm depth, and 100 μm pitch. Surface microscopic topography was observed with scanning electron microscope (SEM) and 3D laser microscope. Further, surface roughness in each group and microgroove size were measured. Crystal phase was analyzed with X-ray diffraction. Specimens were subjected to three- points flexural strength test, and Weibull distribution was used to analyze their strength characteristics.@*RESULTS@#SEM showed that sintered surface was flat with clear grain structure; sandblasted surface exihibited bumps and holes with sharp margins and irregular shape; microgrooves were regularly aligned without evident defect, and nano-scale particles were observed on the surface inside of the microgrooves. Ra value of microgrooved group [(9.42±0.28)] μm was significantly higher than that of sandblasted group [(1.04±0.03) μm] and sintered group [(0.60±0.04) μm], and there was statistical difference between sandblasted group and sintered group (P < 0.001). The microgroove size was precise with (49.75±1.24) μm width, (30.85±1.02) μm depth, and (100.58±1.94) μm pitch. Crystal phase analysis showed that monoclinic volume fraction of sandblasted group (18.17%) was much higher than that of sintered group (1.55%), while microgrooved group (2.21%) was similar with sintered group. The flexural strength of sandblasted group (986.22±163.25) MPa had no statistical difference with that of sintered group (946.46±134.15) MPa (P=0.847), but the strength in microgrooved group (547.92±30.89) MPa dropped significantly compared with the other two groups (P < 0.001). Weibull modulus of sintered, sandblasted, microgrooved groups were 7.89, 6.98, and 23.46, respectively.@*CONCLUSION@#Femtosecond laser was able to form micro/nanostructured microgrooves on zirconia surface, which deleteriously affected the flexural strength of zirconia.


Subject(s)
Humans , Ceramics , Dental Materials , Flexural Strength , Lasers , Materials Testing , Microscopy, Electron, Scanning , Surface Properties , Yttrium , Zirconium
6.
Journal of Xi'an Jiaotong University(Medical Sciences) ; (6): 817-822, 2021.
Article in Chinese | WPRIM | ID: wpr-1011646

ABSTRACT

【Objective】 To explore the establishment of individualized prediction model of recurrence after percutaneous endoscopic lumbar discectomy (PELD) in patients with lumbar disc herniation (LDH). 【Methods】 We selected 124 LDH patients treated with PELD in Department of Orthopedics, The First Affiliated Hospital of Xi’an Jiaotong University, from January 2017 to January 2020 as the research subjects. Their clinical data were retrospectively analyzed, and the independent risk factors affecting PELD recurrence in the LDH patients were screened by univariate analysis and Logistic regression analysis, respectively; the correlation histogram prediction model was established. 【Results】 Age, history of diabetes, course of disease, work intensity and IDDG were the risk factors for the recurrence of PELD in LDH patients (P<0.05). Based on the risk factors screened out, the prediction model of the histogram was established, and the model was verified. The results showed that the C-index of the modeling set and the validation set was 0.944 (95% CI: 0.902-0.963) and 0.969 (95% CI: 0.911-0.978), respectively. The correction curves of both groups were well fitted with the standard curves. The areas under the ROC curve (AUC) in the two groups were 0.944 and 0.969, respectively, which proved that the model had good prediction accuracy. 【Conclusion】 LDH patients have many independent risk factors for recurrence after PELD, and the model based on risk factors with good predictive ability can be useful in preoperative evaluation, appropriate patient selection, and decrease of recurrence rate after PELD.

7.
Journal of Experimental Hematology ; (6): 1144-1151, 2020.
Article in Chinese | WPRIM | ID: wpr-827149

ABSTRACT

OBJECTIVE@#To explore the effect of regulating A20 expression on NF-κB and biological characteristics of Jurkat cells with glucocorticoid (GC) resistance.@*METHODS@#CCRF CEM and Jurkat cells were treated with dexamethasone (DEX) at concentrations of 100、10、1、0.1、0.01 and 0.001 μmol/L, and cultured for 24、48 and 72 h. The proliferation inhibition rate of Jurkat cell was detected by CCK-8. A20 plasmid was constructed, A20-siRNA was designed and synthesized, and transfected into Jurkat cells by liposome. CCK-8 was used to detect the proliferation rates of Jurkat cells in different concentrations of DEX group, DEX combined with A20 plasmid group and A20-siRNA group. The mRNA expression level of NF-κB was detected by RT-qPCR, the protein expression level of NF-κB was detected by Western blot, and the apoptosis of Jurkat cells was examined by flow cytometry.@*RESULTS@#The inhibitory effects of DEX at different concentrations on the growth of CCRF CEM cells were time-dependent (r=0.984, P<0.05) and concentration-dependent (r=0.966, P<0.05). At the point of 24 hour, the IC approached 1 μmol/L in CCRF CEM cells. Great large differences began to appear between 1 and 10 μmol/L, the proliferation rate of Jurkat cells treated with 1 μmol/L DEX did not show a significant change. Therefore, 1 μmol/L was selected as control group. The cell proliferation rate of A20 plasmid transfection combined with different concentrations of DEX group was lower than that of DEX group and A20-siRNA combined with DEX group. After transfection of A20 plasmid, the expression level of NF-κB was significantly lower than that of control group (P<0.05), and the apoptotic rate was significantly higher than that of control group (P<0.05). After transfection of Jurkat cells with A20-siRNA, the expression level of NF-κB was significantly higher than that of control group (P<0.05). The apoptotic rate of cells in A20-siRNA group was not significantly changed (P>0.05).@*CONCLUSION@#Jurkat cells are resistant to DEX. A20 overexpression combined with DEX can increase sensitivity of Jurkat cells with GC resistance and decrease the proliferation rate of Jurkat cells, down-regulate the expression level of NF-κB and promote the apoptosis of Jurkat cells.


Subject(s)
Humans , Apoptosis , Cell Proliferation , Jurkat Cells , NF-kappa B , RNA, Small Interfering , Transfection , Tumor Necrosis Factor alpha-Induced Protein 3
8.
Journal of Clinical Surgery ; (12): 328-330, 2019.
Article in Chinese | WPRIM | ID: wpr-743329

ABSTRACT

Objective To investigate the changes of Caprini score, plasma D-D and FIB levels in patients with post-fracture DVT and its diagnostic significance.Methods Sixty patients with post-fracture DVT (DVT group) and 120 patients without DVT after fracture were selected (control group).The Caprini score, plasma D-D and FIB levels were compared between the two groups.The relationship between Caprini score and plasma D-D and FIB in the DVT group was analyzed.Results The Caprini score, D-D and FIB levels in the DVT group[7.26±1.88, (3.31±1.52) mg/L, (4.48±0.72) g/L] were significantly higher than those in the control group[3.39±0.80, (0.46±0.11) mg/L, (3.60±0.68) g/L], and the difference was statistically significant (P<0.05).There was a significant positive correlation between Caprini score and D-D and FIB levels in patients with DVT (P<0.05).There was a positive correlation between Caprini score and level of D-D and FIB (r=0.748、r=0.662, P<0.05).The sensitivity of Caprini score combined with D-D and FIB levels in the diagnosis of DVT in fracture patients was 97.83%, specificity was 92.00%, missed diagnosis rate was 2.17%, misdiagnosis rate was 8.00, and area under ROC curve was 0.947 (P<0.05).Conclusion Caprini score, D-D and FIB levels in patients with lower limb fracture have certain clinical value for the diagnosis of DVT.

9.
Journal of Peking University(Health Sciences) ; (6): 1119-1123, 2019.
Article in Chinese | WPRIM | ID: wpr-941945

ABSTRACT

OBJECTIVE@#To analyze changes in occlusal force distribution and occlusal contact in posterior partial fixed implant-supported prostheses over time, and to provide reference for the precise occlusion design, adjustment and maintenance of implant prostheses.@*METHODS@#According to certain inclusion and exclusion criteria, patients were recruited from partially edentulous patients who had received implant-supported single crown or fixed bridge in the posterior region. The patients were collected since the implant prostheses settling and scheduled for the routine examination of implant prostheses and the occlusal examinations of complete dentition after 2 weeks, 3, 6, and 12 months. Occlusal examinations were taken with the articulating papers and T-Scan III (Tekscan, South Boston, USA), which could check and measure the occlusal contact condition of complete dentition. The occlusion time and relative occlusal forces of implant prostheses, mesial adjacent teeth and control teeth were recorded at the same time.@*RESULTS@#Thirty-seven posterior partial fixed implant prostheses in 33 patients (17 women and 16 men, aged 24-70 years) were followed up for 3-12 months (average 8.3 months). At baseline, the relative occlusal forces of implant prostheses were significantly lower than those of the corresponding control teeth (P<0.001). However, after 3 months, the relative occlusal forces of implant prostheses had significantly increased (P<0.05), while control teeth decreased significantly (P<0.05), resulting in no statistical significance between them. The implant prostheses occlusion time ratio also increased significantly from 2 weeks to 3 months (P<0.05). There was no significant difference from the third month to the sixth month, or from the sixth month to the twelfth month (P>0.05).@*CONCLUSION@#Light contact and time-delayed occlusion of posterior implant prostheses changes significantly in the first three months after settling implant prostheses. These changes mainly include the advance of the time point of the implant prosthesis to start the occlusion contact, and the increase of the occlusal force of the implant prosthesis. The occlusion of posterior implant prostheses should be carefully monitored at end of the third month follow-up clinically.


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Bite Force , Crowns , Dental Prosthesis, Implant-Supported , Denture, Partial, Fixed , Mouth, Edentulous
10.
China Journal of Chinese Materia Medica ; (24): 3064-3069, 2019.
Article in Chinese | WPRIM | ID: wpr-773189

ABSTRACT

This project is to investigate chemical compositions from the roots of Erythrina corallodendron. Through the methods of silica gel,ODS,Sephadex LH-20 column chromatography and preparative HPLC,15 compounds were isolated from the 95% ethanol extract of the roots of E. corallodendron. Based on spectroscopic techniques,the structures of these compounds were identified as 10,11-dioxoerythraline( 1),erythrinine( 2),erythraline( 3),11-methoxyerythraline( 4),cristanines B( 5),erythratine( 6),erysotrine( 7),medioresinol( 8),( ±)-ficusesquilignan A( 9),( +)-pinoresinol( 10),nicotinic acid( 11),dibutyl phthalate( 12),vanillic acid( 13),3-hydroxy-1-( 4-hydroxy-3-methoxyphenyl)-1-propanone( 14),and syringic acid( 15). Compounds 8-10 are isolated from genus Erythrina for the first time and all compounds are isolated from E. corallodendron for the first time. Furthermore,this paper screened the antioxidant and cytotoxic activities of the compounds using models of liver microsomal oxidation inhibition and MTT.


Subject(s)
Antioxidants , Chromatography, High Pressure Liquid , Erythrina , Chemistry , Microsomes, Liver , Phytochemicals , Plant Extracts , Plant Roots , Chemistry
11.
Chinese Journal of Medical Genetics ; (6): 385-388, 2018.
Article in Chinese | WPRIM | ID: wpr-688230

ABSTRACT

<p><b>OBJECTIVE</b>To construct an eukaryotic expression plasmid for AY358935 gene and explore its function.</p><p><b>METHODS</b>cDNA of the AY358935 gene was amplified by reverse transcription-PCR and cloned into pGEM-Teasy. The pGEM-T-AY was validated by sequencing and served as a template for the construction of eukaryotic expression plasmid. The pcDNA3.1-AY recombinant was validated by double enzyme digestion and used for transient transfection of M14 cells. Expression of the AY358935 protein and proliferation of the M14 cells were determined respectively by Western blotting and 3-(4,5)-dimethylthiahiazo(-z-y1)-3,5-di-phenytetrazoliumromide (MTT) colorimetry.</p><p><b>RESULTS</b>The amplicons of RT-PCR were confirmed to have similar size with the cDNA fragment of the AY358935 gene as well as cloned region of pcDNA3.1-AY. The cloned region of pGEM-T-AY was sequenced to be identical with cDNA sequence of the AY358935 gene. M14 cells were transfected by the AY358935 gene, pcDNA3.1 and liposomes, respectively. After 48 h, expression of the AY358935 protein in M14 cells transfected with the AY358935 gene was significantly higher than other two groups. They also had a significantly higher absorbance value (A=0.74) than other two groups (A=0.39 and 0.46, respectively; P<0.05).</p><p><b>CONCLUSION</b>An eukaryotic expression plasmid of the AY358935 gene was successfully constructed. Product of the AY358935 gene may promote the proliferation of M14 cells.</p>

12.
Chinese Journal of Tissue Engineering Research ; (53): 1098-1103, 2017.
Article in Chinese | WPRIM | ID: wpr-515281

ABSTRACT

BACKGROUND:Recent studies have found that femoral neck angleαin patient with femoral neck hernial fossa increased significantly. However, whether the femoral neck hernia fossa can be used as imaging diagnostic indicator for femoroacetabular impingement syndrome remains controversial. OBJECTIVE:To evaluate the association between alpha angle and herniation pit in asymptomatic hip joints, influencing factors of the above indexes, and to provide evidence for the diagnosis of hip impingement syndrome. METHODS:Adults with asymptomatic hip joints from September 2013 to December 2015 were retrospectively studied. Alpha angles were measured on oblique axial MRI images. The incidence and size of herniation pit were determined by MRI. Size measures, prevalence, and statistical analyses were conducted regarding its association with age, gender, laterality (right or left hip). Intra-and inter-observer consistency was determined by intra-class correlation coefficient. RESULTS AND CONCLUSION:(1) 105 patients with asymptomatic hips were included, and 185 sides of hip MRI images were obtained. The range of age was 18-80 years old. The prevalence of herniation pit in asymptomatic hips was 21.6%. (2) The range of alpha angle was 27.6°–65.0°. Alpha angles of hip joints of 17 cases were ≥ 55°. (3) There was no association between alpha angle≥55° and the size of herniation pit (P>0.05). The prevalence of herniation pit was not correlated with age, gender and affected side (P=0.160, 0.157, 0.110). Inter-observer consistency of alpha angle was 0.523 between first measurements of first vs. second observer, respectively. Intra-observer consistency of alpha angle was 0.654, respectively. (4) There is no association between alpha angle ≥ 55 degrees and presence of herniation pit or demographic variables (age, gender and affected side). The presence of herniation pit and the increased alpha angle need to be interpreted with caution. Clinical symptoms and other examinations should be used in the diagnosis of hip impingement syndrome.

13.
Chinese Pharmacological Bulletin ; (12): 761-767, 2017.
Article in Chinese | WPRIM | ID: wpr-618987

ABSTRACT

Aim To observe the effects of rapamycin (Rapa) and starvation-induced autophagy on the morphology of neuronal cells, tau protein aggregation and expression of phosphorylated tau protein, to explore the possible mechanism of cytoprotective effect of these two classical autophagy inducers on phosphorylated tau expressing cells.Methods N2a cells were transfected with GFP-tau plasmid, and equal amount of empty vector was used as control.Then cells were incubated with or without okadaic acid(OA) for 12 h, followed by treatment with autophagy inducers rapamycin(Rapa) and EBSS, autophagy inhibitor Bafilomycin A1(Baf A1) for 6 h.DAB was used to observe tau expression and cell morphology.Confocal microscopy was used to observe the intracellular tau aggregation.TUNEL assay and cleaved caspase-3 level were used to detect cell apoptosis.Immunoblot was used to detect the expression of phosphorylated tau and autophagy-related proteins.Results Our study showed that the N2a cells treated with OA exhibited small cell body, retracted processes and increased tau aggregation, compared with only tau-expressing cells.Rapa and EBSS treatment significantly improved cell morphology, decreased tau aggregation and reduced cell apoptosis.On the contrary, Baf A1 treatment induced aberrant cell shape and increased tau aggregation and cell apoptosis.In addition, Rapa significantly decreased the high molecular weight, phosphorylated tau whereas EBSS especially decreased the low molecular weight phosphorylated tau.Conclusions Rapa and EBSS is alleviate hyperphosphorylated tau-induced cytotoxicity through different mechanism.Rapamycin mainly decreases phosphorylated tau oligomers, while EBSS liable to decrease the soluble phosphorylated tau.

14.
Chinese Pharmaceutical Journal ; (24): 2037-2040, 2016.
Article in Chinese | WPRIM | ID: wpr-858893

ABSTRACT

OBJECTIVE: To compare the in vitro dissolution of ursodeoxycholic acid capsules prepared by different grinding methods and screen the best grinding method. METHODS: Using the large cup method, HPLC was used to investigate the similarity of dissolution behaviors between the reference preparation Ursofalk® (the original drug) and the self-made ursodeoxycholic acid capsules in four dissolution media. The grinding method which obtained product with qualified similarity factor f2 was determined as the best technology. RESULTS: The ursodeoxycholic acid capsules made with raw material micronized by ball grinder for 3 min had similar dissolution curve to the original drug. CONCLUSION: Rational preparation process is established for ursodeoxycholic acid capsules.

15.
Chongqing Medicine ; (36): 2599-2601, 2016.
Article in Chinese | WPRIM | ID: wpr-495371

ABSTRACT

Objective To explore the expression of microRNA‐34a(miR‐34a) in sodium iodoacetate‐induced rat model of os‐teoarthritis rat model and to initially clarify its function .Methods Thirty male Wistar rats were selected .The right knees were in‐jected with sodium iodoacetate (model group) and the left knees served as the control group without injecting by sodium iodoace‐tate .The expression levels of miR‐34a in the synovial fluid and articular chondrocytes were compared between two groups after con‐structing the model .Articular chondrocytes in the two groups were separated for conducting the primary culture ,after miR‐34a knockdown ,the flow cytometry was used to determine cell apoptosis .Results The Makin score in the model group was(5 .09 ± 1 .35)points ,which was (1 .27 ± 0 .64)points in the control group ,the difference had statistical significance (P<0 .05) .Compared with the control group ,the expression levels of miR‐34a in the synovial fluid and articular chondrocytes in the model group were in‐creased ,the difference was statistically significant(P<0 .05) .After the miR‐34a knockdown by using its complementary antisense fragment ,articular chondrocytes apoptosis in the model group was significantly inhibited (P<0 .05) .Conclusion The expression of miR‐34a in the synovial fluid of sodium iodoacetate‐induced knee osteoarthritis is increased ,moreover inhibiting the microRNA‐34a expression could reduce the apoptotic rate of articular chondrocytes in osteoarthritis rat .

16.
Chinese Journal of Gastrointestinal Surgery ; (12): 383-387, 2014.
Article in Chinese | WPRIM | ID: wpr-239394

ABSTRACT

<p><b>OBJECTIVE</b>To prepare cisPLLAtin-loaded polylactic acid/cnts, and to study the anti-tumor effect of 5-FU-PLLA-CNTs on human gastric carcinoma cell lines(MGC803 and MNK45).</p><p><b>METHODS</b>5-FU-PLLA-CNTs were prepared with ultrasound emulsification. The morphology of 5-FU-PLLA-CNTs was determined by scanning electron microscope(SEM), and its drug loading and drug release curve in vitro were detected by UV-Vis-NIR spectrophotometer. Cells were divided into experiment, positive control and negative control groups. CCK8 method was used to test the cytotoxic effect of 5-FU-PLLA-CNTs in different concentrations on MGC803 and MNK45 cell proliferation. Flow cytometry was employed to measure the apoptotic rate of MGC803 and MNK45 cells before and after the intervention of 5-FU-PLLA-CNTs.</p><p><b>RESULTS</b>Deep layer film of 5-FU-PLLA-CNTs was successfully established, whose drug-load rate was(4.54±0.43)%, entrapment rate was(21.56±2.36)%. In vitro release test showed release rate within 24 h of 5-FU-PLLA-CNTs was 23.9% in a as lowly increasing manner, and accumulating release rate was 85.3% at day 31. CCk8 experiment revealed, as compared to control group, 5-FU-PLLA-CNTs significantly inhibited the proliferation of two cell lines in dose-dependent and time-dependent manner. The best 5-FU-PLLA-CNTs concentration of inhibition for human gastric cancer cell lines was 1 mg/well. Flow cytometry indicated the apoptotic rate of MGC803 and MNK45 cells in experiment group treated by 1 mg/well 5-FU-PLLA-CNTs significantly increased as compared to negative control group (P<0.05), while the difference was not significant as compared to positive control group (P>0.05).</p><p><b>CONCLUSION</b>The 5-FU-PLLA-CNTs has good drug sustained-release capacity, and can significantly kill and inhibit the proliferation of MGC803 and MNK45 cell lines.</p>


Subject(s)
Humans , Cell Line, Tumor , Cell Proliferation , Delayed-Action Preparations , Fluorouracil , Pharmacology , Lactic Acid , Pharmacology , Nanotubes, Carbon , Polyesters , Polymers , Pharmacology , Stomach Neoplasms , Pathology
17.
Chinese Medical Journal ; (24): 412-416, 2014.
Article in English | WPRIM | ID: wpr-317969

ABSTRACT

<p><b>BACKGROUND</b>The insulin-like growth factor signaling pathway plays an important role in the modulation of cell growth and proliferation. The aim of this study was to investigate the role of polymorphisms of the insulin-like growth factor 2 (IGF2) and IGF-binding protein 3 (IGFBP3) genes, which encode key proteins of this pathway, as risk factors for gastric carcinoma (GC).</p><p><b>METHODS</b>A case-control study including 404 histologically confirmed GC patients and 424 healthy controls of the same ethnicity was conducted to retrospectively investigate the genetic polymorphisms of two genes, IGF2+820A>G (rs680) and IGFBP3 A-202C (rs2854744). Adjusted odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using Logistic regression.</p><p><b>RESULTS</b>The IGF2 genetic variants examined contributed to GC risk individually (OR, 1.26; 95% CI, 1.08-1.46). The genotype frequencies of IGFBP3 A-202C were not significantly different between the cancer cases and controls (P > 0.05). Compared to the IGF2 AA genotype, carriers of one variant combined genotype were more pronounced among young subjects (<60 years), male subjects, never smokers, and those with a family history of cancer (OR = 1.36, 95% CI = 1.09-1.72, P < 0.05; OR = 1.61, 95% CI = 1.28-2.08, P < 0.05; OR = 1.46, 95% CI = 1.11-1.98, P < 0.05; OR = 1.53, 95% CI = 0.91-2.6, P < 0.05; respectively). Moreover, when the combined effects of the risk genotypes were investigated, significant associations were detected between highrisk genotypes in IGF2 and IGFBP3 (OR, 2.47; 95% CI, 1.75-3.49).</p><p><b>CONCLUSIONS</b>Our results suggest that polymorphic variants of the IGF2 genes modulate gastric carcinogenesis. Moreover, when the IGF2 and IGFBP3 variants are evaluated together, a greater effect on GC risk is observed.</p>


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Case-Control Studies , China , Genetic Predisposition to Disease , Genetics , Genotype , Insulin-Like Growth Factor Binding Protein 3 , Genetics , Insulin-Like Growth Factor II , Genetics , Logistic Models , Polymorphism, Genetic , Genetics , Stomach Neoplasms , Genetics
18.
Chinese Journal of Surgery ; (12): 1067-1070, 2013.
Article in Chinese | WPRIM | ID: wpr-314765

ABSTRACT

<p><b>OBJECTIVE</b>To study the relationship between the change of coagulation and the clinicopathologic characteristics in patients with gallbladder cancer.</p><p><b>METHODS</b>The 64 gallbladder cancer patients (GBC group) and 60 cholecystitis patients (control group) had been reviewed from January 2007 to June 2013. The prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen (Fib), and thrombin time (TT) had been measured and compared between patients of GBC group and control group. The relationship of coagulation function and prognosis were analyzed.</p><p><b>RESULTS</b>Compared with control group, APTT in GBC group ((29.0 ± 4.2) s) was significantly shortened (t = -4.265, P = 0.000) and PT ((11.5 ± 1.4) s), TT ((15.3 ± 3.5) s), Fib ((4.1 ± 0.9) g/L) were significantly increased in GBC group (t = 2.521, 4.147 and 4.365, all P < 0.05). The level of Fib was higher in patients with medium or poor-differentiated tumor cells (F = 4.069, P = 0.022), lymph metastasis (t = 2.640, P = 0.010) and advanced staging (II-IV) (t = 3.003, P < 0.01) than those of well-differentiated, non-lymph metastasis and early staging (0-I). The ratio of gallbladder cancer with hyperfibrinogenemia (32/64) was significantly higher than control group (11/60, χ(2) = 13.709, P < 0.01). In GBC group, compared with normal Fib patients, hyperfibrinogenemia patients showed significantly difference in clinicopathologic characteristics (χ(2) = 5.851-10.573, P < 0.05). The average survival period of hyperfibrinogenemia patients and normal Fib patients were 8.63 months and 16.73 months. The 1-, 3-year survival rate of patients with hyperfibrinogenemia were significantly lower than those with normal Fib (64.7%, 14.9% vs. 74.9%, 21.1%, P < 0.05).</p><p><b>CONCLUSION</b>Preoperative plasma level of Fib might be a new promising biomarker in patients with gallbladder cancer for evaluating disease progression and prognosis.</p>


Subject(s)
Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Blood Coagulation , Case-Control Studies , Fibrinogen , Metabolism , Gallbladder Neoplasms , Prognosis , Prothrombin Time
19.
Chinese Journal of Surgery ; (12): 780-783, 2013.
Article in Chinese | WPRIM | ID: wpr-301213

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate the effect of preoperative transarterial chemoembolization (TACE) on hepatocellular carcinoma located in caudate lobe.</p><p><b>METHODS</b>Totally 29 cases of caudate lobe hepatocellular carcinoma admitted from January 2001 to December 2010 were analyzed retrospectively. Among the 29 patients, 23 were male and the other 6 were female. The median age was 52 years. According to receiving preoperative TACE or not, the 29 cases were divided into two groups: preoperative TACE plus surgery (group A, n = 11) and surgery only (group B, n = 18). The surgical results and long-term survival were compared between two groups.</p><p><b>RESULTS</b>After TACE, the diameter of the tumour reduced by over 33.3% in 3 patients, 10.0% to 33.3% in 6 patients, and less than 10.0% in 2 patients. The duration of surgery and intraoperative blood loss in group A were (298 ± 39) minutes and (1031 ± 310) ml, respectively. The duration of surgery and intraoperative blood loss in group B were (281 ± 54) minutes and (868 ± 403) ml, respectively. No significant difference was found in terms of these two groups (t = 1.006, P = 0.324; t = 1.223, P = 0.232). In addition, 6 cases in group A developed complications and 4 cases in group B did so. Only one patient died because of postoperative complication, and this patient belonged to group A. No significant difference was found between two groups (χ(2) = 0.028, P = 0.868; χ(2) = 0.633, P = 0.426). The 5-year survival rate was 56.8% in group A and 34.9% in group B. The difference did not reach significant difference (P = 0.132).</p><p><b>CONCLUSIONS</b>For hepatocellular carcinoma located in caudate lobe, preoperative TACE does not significantly increase the surgical difficulty and impair the safety. In addition, preoperative TACE has the tendency to provide benefit to long-term survival.</p>


Subject(s)
Humans , Carcinoma, Hepatocellular , General Surgery , Chemoembolization, Therapeutic , Hepatectomy , Liver Neoplasms , General Surgery , Retrospective Studies
20.
Chinese Journal of Stomatology ; (12): 68-71, 2013.
Article in Chinese | WPRIM | ID: wpr-260174

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the effect of icariin on the expression of receptor activator nuclear factor-κB ligand (RANKL) and osteoprotegerin (OPG) of human periodontal ligament cells (hPDLC) inhibited by sonicated extracts of Porphyromonas gingivalis (Pg).</p><p><b>METHODS</b>hPDLC were extracted from 14 premolars extracted from 11 to 18-year-old patients for orthodontic purpose and cultured. The 7th passages of hPDLC were divided into six groups, each group was stimulated with 0, 0.001, 0.01, 0.1, 1 mg/L icariin and 50 mg/L sonicated extracts for 48 h. Reverse transcription polymerase chain reaction (RT-PCR) and Western blotting were used to detect the expression of RANKL and OPG.</p><p><b>RESULTS</b>Pg extracts group expressed more RANKL than the control group (3.60 ± 0.11 vs 1.08 ± 0.19), OPG expression decreased (0.32 ± 0.08 vs 1.01 ± 0.08), and RANKL/OPG ratio significantly increased (11.20 ± 0.13 vs 1.00 ± 0.10). Compared with control group, RANKL and OPG expression changed in groups stimulated with 0.001, 0.01, 0.1, 1 mg/L icariin. OPG expression was higher in 0.1 mg/L group than in the control (36.84 ± 0.05 vs 1.01 ± 0.08), RANKL/OPG ratio was significantly lower than the control group (0.04 ± 0.03 vs 1.00 ± 0.10) (P < 0.01).</p><p><b>CONCLUSIONS</b>The concentration of 0.1 mg/L icariin can inhibit hPDLC expression of RANKL in sonicated extracts of Pg and promote OPG expression.</p>


Subject(s)
Adolescent , Child , Female , Humans , Male , Cells, Cultured , Flavonoids , Pharmacology , Osteoprotegerin , Metabolism , Periodontal Ligament , Cell Biology , Metabolism , Porphyromonas gingivalis , RANK Ligand , Metabolism
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