1.Three cases of troubleshooting for Bird-brand ventilator
China Medical Equipment 2009;(8):54-55
Ventilator is broadly used in the hospital all over the world,The paper describes three case of common troubles in clinical practice for Bird-brand ventilator and its troubleshooting.
2.Property and Effect in Chinese Ancient Herbalism
Journal of Traditional Chinese Medicine 2017;58(17):1447-1449,1461
The construction of traditional theory of Chinese herbalism cannot do without the accumulated understanding of herb effect in clinical practice.Meanwhile,it closely relates to the natural history of using different theories of herb property to explain effect and mechanism at different stages.The compilation of Inner Canon of Yellow Emperor 《(黄帝内经》) and Shennong Bencao Jing 《神农本草经》) represent the initial formation of traditional herbalism in Chinese medicine.These two books have a relatively complete description of property and effects of herbs,but with different focus of concerning.After Shennong Bencao Jing,explaining the effect from property of herbs gradually become the developing trend and basic characteristics of herbalism.During the Ming-Qing Dynasties,publication of a large number of herbal annotation works further highlights this feature.
3.Construction and self-activation detection of yeast two-hybrid bait plasmid of human programmed cell death ligand 1 immunoglobulin variable region domain gene
Chinese Journal of Biologicals 2024;37(1):8-16
Objective To construct a yeast two-hybrid recombinant bait plasmid of human programmed cell death ligand 1(PD-L1)immunoglobulin variable region(IgV)domain gene,detect its expression in yeast and detect the cytotoxicity and self-activation of PD-L1 IgV protein as well as the interaction between PD-L1 IgV and human thioredoxin(hTrx).Methods Human PD-L1 was analyzed by bioinformatics method,and primers were designed to amplify PD-L1 IgV domain based on the coding region of PD-L1 gene registered in NCBI GenBank database. PCR amplification was carried out with pENTERPD-L1 plasmid as template,and then cloned into yeast two-hybrid bait vector pGBKT7. The recombinant bait plasmid and pGBKT7 empty vector were transformed into Y2HGold yeast cells respectively,and the PD-L1 IgV gene and its expression were detected by PCR and Western blot;Meanwhile,the protein toxicity and self-activation of PD-L1 IgV were detected,and the interaction between PD-L1 IgV and hTrx was detected by drip plate method.Results The bioinformatics analysis results of PD-L1 were consistent with related reports. The recombinant bait plasmid pGBKT7-PD-L1 IgV was correctly constructed,and Y2HGold positive clone was obtained,in which PD-L1 IgV was stably expressed. The empty vector pGBKT7 and recombinant bait plasmid pGBKT7-PD-L1 IgV grew well on SD/-Trp and SD/-Trp/X-α-Gal plates with the same colony size and number and white colony,but they did not grow on SD/-Trp/X-α-Gal/AbA plates,which indicated that PD-L1 IgV protein had no toxicity and no self-activation effect on yeast. The results of drip plates test showed that all experimental groups grew well on SD/-Trp/-Leu plate,while only positive control group grew on SD/-Trp/-Leu/X-α-Gal/AbA plate and showed blue color,which indicated that bait protein PD-L1 IgV and hTrx did not self-activate,and there was no interaction between them.Conclusion Recombinant human PD-L1 IgV bait plasmid was successfully constructed. PD-L1 IgV protein showed no toxicity and self-activation effect on yeast cells,and there was no interaction between PD-L1 IgV and hTrx. Subsequently,hTrx can be used to construct a peptide aptamer library,from which peptide aptamers that specifically bind to PD-L1 IgV can be screened.
4.A comparison of computer-assisted total knee arthroplasty through vastus medialis approach and conventional arthroplasty
Chinese Journal of Tissue Engineering Research 2016;20(22):3205-3211
BACKGROUND:In the treatment of primary knee osteoarthritis, total knee arthroplasty is a common treatment, but there are some shortcomings in the traditional operation, which maylead to early failure of the prosthesis.
OBJECTIVE:To explore the difference of computer-assisted total knee arthroplasty by vastus medialis approach from the traditional total knee arthroplasty.
METHODS:A total of 79 patients with primary knee osteoarthritis were randomly divided into control group (41 cases) and observation group (38 cases), which underwent conventional total knee arthroplasty and computer-assisted total knee arthroplasty by vastus medialis approach. Surgical incision, operation time, total blood loss and drainage volume were recorded and compared in both groups. In 12 months of folow-up, Hospital for Special Surgery knee score was evaluated, and the complications were recorded and compared between the two groups.
RESULTS AND CONCLUSION:(1) Operative incision was significantly less in the observation group than in the control group. Operation time was significantly shorter in the observation group than in the control group. Total blood loss and drainage volume were significantly lessin the observation group than in the control group (alP< 0.05). (2) Patients in both groups were folowed up for 12 months. Index score and total score of knee function were significantly higher in the observation group than in the control group (al P< 0.05). (3) No adverse events such as infection, prosthesis loosening or fracture appeared in the observation group. In the control group, four cases affected prosthesis loosening. One case suffered from wound infection. Above events were improved obviously after active treatment. No serious complications occurred. The incidence of complications was significantly lower in the observation group than in the control group (P< 0.05). (4) The results show that, compared with the traditional operation, the choice of the femoral medial approach and the use of computer aided design technology can simulate the knee replacement process, set the cutting position, improve the accuracy and success rate of surgery, have less trauma, and effectively improve knee function, and reduce the incidence of postoperative complications.
5.How to guarantee the supply of low-price medicine in common use:Analysis from the perspec-tive of governance tools
Chinese Journal of Health Policy 2014;(11):1-6
The effective guarantee of the supply of low-price medicine in common use is of great significance for the protection of public health, the safeguard of social equality and the smooth progress of new healthcare reform. On the basis of the governance tools theory, the paper focuses on an analysis of approaches to combine and optimize the diverse utilization of governance tools in order to integrate the means of supply of the low-price medicine in com-mon use. In other words, the paper utilizes the ‘Voluntary-Directive-Mixed’ governance tools framework to provide possible solutions for the supply of low-price medicine in common use, namely, the locations of the voluntary tools ( household and community, volunteers, and market) , the directive tools ( government command-control regulation, establishment of public enterprises, and direct provision) , and the mixed tools ( information disclosure and advice, subsidies, auctions of property rights, tax and user charge) . Lastly the paper proposes specific policy suggestions in four aspects to confirm the total strategy of guaranteeing the supply of low-price medicine in common use:clever use of price leverage, improvements to procurement methods, establishment of an information disclosure system for medi-cine price, and a confirmation of government subsidies and industrial policy strategies.
6.Software version and medical device software supervision.
Chinese Journal of Medical Instrumentation 2015;39(1):48-50
The importance of software version in the medical device software supervision does not cause enough attention at present. First of all, the effect of software version in the medical device software supervision is discussed, and then the necessity of software version in the medical device software supervision is analyzed based on the discussion of the misunderstanding of software version. Finally the concrete suggestions on software version naming rules, software version supervision for the software in medical devices, and software version supervision scheme are proposed.
Equipment and Supplies
;
Software
7.Clinical features of 138 patients with ulcerative colitis
Chinese Journal of General Practitioners 2008;7(2):97-99
Objective To investigate the clinical features of ulcerative colitis(UC).Methods Based on typical clinical manifestation,enteroscopy and pathological results,138 in-hospital patients were diagnosed UC during 1998 to 2006.Their clinical features were analyzed in this report.ResultsUC was more commonly seen in people aged 20~60(n=108,78.3%).Nearly forty-six percent of the patients (n=63,45.7%)had the disease less than one year.More patients(n=100,72.4%)showed mild or moderate UC.Bloody stool was the most common manifestation.erythrocyte sedimentation rate,hemoglobin,albumin and α1 or α2 globulin levels were closely related with the condition.The mean value of platelet counting was in the upper limit of the normal value.Enteroscopy found more lesion located in the whole colon (n=78,56.5%).Pathological results showed infiltration of inflammatory cells,especially in patients with chronic inflammation.Salieylazosulfapyridine(SASP)and/or 5-Aminosalicyclic(5-ASA)were effective in most UC patients(n=70,50.7%).ConclusionsChinese patients usually had mild to moderate UC,and their courses were often shorter than abroad.The disease was closely related with α1 and α2 globulin levels.Most of the patients had response to SASP and/or 5-ASA.
8.Comparative study on three resin cements to restore anterior flared roots
Chinese Journal of Tissue Engineering Research 2010;14(3):465-468
BACKGROUND: Fiber post is widely used in front teeth aesthetic repair, but some defect teeth cannot form ferrule or thick root canal, which resulted in fiber post prosthetic replacement defluxion and a failure of repair. Presently, new-style resin cement had self sticking component, showing good effects in sticking of fiber post. Whether combination of new-style resin cement can repair affected teeth using fiber post deserves further investigation.OBJECTIVE: Through fatigue test, residual flexural strength and scanning electron microscope (SEM) observation to compare the strength of severely weakened roots restored with three resin cements. METHODS: Eighteen intact maxillary central incisors were collected and formed to severely weakened canals at the same size. Three kinds of resin cements were used to restore. Rely X Unicem, Panavia F and Super-Bond C&B resin cement and identical glass fiber post were used. All the specimens were restored using Ni-Cr ceramic crown, and placed on TCML chewing machine that loaded 1 200 000 cycle forces, and the cycle times when failure occurred were recorded. The samples were intact following loading received residual flexural strength testl SEM was employed to observe breakage surface of the samples. RESULTS AND CONCLUSION: Mean cyclic loading was significantly greater in the Super-Bond C&B Group (1 200 000 times) than in the Relyx Unicem Group (640 000 times) and Panavia F Group (550 000 times) (P< 0.05). No significant difference was detected between the Rely X Unicem and Panavia F Groups. Residual flexural strength was 747.99 N in the Super-Bond C&B Group. SEM demonstrated that Super-Bond C&B formed longer resin processes, which were more than other two groups. Results confirmed that Super-Bond C&B demonstrated better results when restoring flared roots with prefabricated glass fiber posts.
9.Surgical approach of the posterior aspect of the radical resection for carcinomas of pancreatic head in 35 ca-ses.
Clinical Medicine of China 2008;24(11):1168-1170
Objective To investigate the surgical approach of the reasonable radical resection for carcino-mas of pancreatic head. Method 35 of 110 patients with carcinomas of pancreatic head underwent the surgical ap-proach of the posterior aspect of the radical resection for carcinomas of pancreatic head, and histopathological findings and prognosis were analyzed. Results The rate of curative resection rate was 31.82%. 3 patients underwent pancre-atoduodenectomy with partial resection of SMV for 9 patients with macroscopic suspicion of invasion of the SMV. The survival rate of the 5 years was 17.14% and the patients exceed 10 years. Conclusion Surgical approach of the reasonable radical resection for carcinomas of pancreatic head allows the reasonable radical resection,and may lead to increasing the resectability rate and the prognosis in the patients with carcinomas of pancreatic head.
10.The therapeutic effects of warfarin on experimental colitis in rats
Chinese Journal of Digestion 2009;29(2):118-121
Objective To study the relationship between coagulation and inflammatory in 2,4,6- trinitrobenzenesulfonate (TNBS) induced colitis model as well as the therapeutic effect of warfarin.Methods Forty SD-rats were divided into 4 groups, including normal control group (received 0.9% HCI solution), colitis group, warfarin treated group (240 ng/kg daily) and salieylazosulfapyridine (SASP) treated group (100 mg/kg daily). The animal model was induced by injection with 20 mg TNBS. The blood and colon of the rats were removed and the rats was sacrificed at the 14th day. The index of coagulation such as prothrombin time (PT), activated partial thromboplastin time (APTT) and the activity of antithrombins (AT) and the level of tumor necrosis factor-α (TNF-α) were tested.The damage and inflammatory state of the colitis were evaluated by macroscopical score and histological score . The value of disease activity index (DAI) and the platelet counts were alsomeasured. Results The value of DAI was lower in warfarin (1.20±0.45) and SASP (1.78±0.90) treated groups as compared with colitis group (2. 25 ± 0. 89) with no difference (P>0. 05). The macroscopical score was lower in warfarin (1.40 ± 0.55) and SASP (3.14± 1.46) treated grouos as compared with colitis group (4.75 ± 1.66, P<0.01 ). The histological score in warfarin (4. 00± 1.41 ) and SASP (4.28 ± 1.49) treated groups were lower than that in colitis group (7. 75± 1.04, P<0.01). The level of TNF-α was lowest in normal control group (P<0. 01 ), and highest in colitis group. (P<0.01). The PT and APTT were shorter and the aetivity of AT was lower in colitis groupin comparison with warfarin treated group and normal control group (P<0.01). The platelet counts was highest in colitis group. P<0.01). Conclusion The abnormal coagulation in TNBS induced colitis can be effectively treated with warfarin.