1.Microstructure of Platelet-rich Plasma Gel
Jian MA ; Fang LI ; Dajiang REN ; Chaoqun YE
Chinese Journal of Rehabilitation Theory and Practice 2011;17(3):223-225
ObjectiveTo observe the microstructure and ultrastructure of platelet-rich plasma gel. MethodsPRP gel samples were obtained by two-step centrifugation. The platelets were counted before and after centrifugation. TGF-β1, PDGF-AB were measured in the PRP gel and the whole blood using the enzyme-linked immunosorbent assay. PRP gel samples were observed with macroscopic observation, HE staining, transmission (TEM) and scanning electron microscopy (SEM). ResultsThe platelet concentration of PRP was 458% of whole blood. TGF-β1, PDGF-AB were found in high concentrations in PRP gel samples. Both SEM and TEM showed that PRP gel mainly contained fibrillar material with striated band similar to fibrin filaments, and platelet. ConclusionPRP gel may be an ideal injectable scaffold material for constructing tissue engineering nucleus pulposus.
2.Preparation of standard molecular weight fragment mixture based on molecular cloning
Wenhua MA ; Man CHEN ; Xue PEI ; Bangyi WANG ; Chaoqun WANG ; Xingchun ZHAO ; Le WANG
Chinese Journal of Forensic Medicine 2017;32(3):245-248
Objective To prepare the standard molecular weight fragment mixtures. Methods Primers were designed to prepare clones which contained different sizes of standard molecular weight fragments. The template used for amplification of insert fragments was the pMD18-T vector. Bacteria culture and plasmid extraction were used to obtain abundant target fragment. Unlabeled DNA fragments were prepared by double digestion of the recombinant plasmids, and the fluorescent adaptor was prepared by annealing with two partial reverse complimentary DNA fragments. The unlabeled fragments and fluorescent adaptor were connected by DNA ligation reaction assisted with T4 DNA ligase. In this way, different sizes of standard molecular weight fragments were prepared. Standard molecular weight fragment mixture was finally prepared by mixing all the fragments together before purification. Results Ten standard molecular weight fragments of different sizes were prepared. The sizes of each fragment are 80bp, 124bp, 194bp, 224bp, 254bp, 304bp, 349bp, 399bp, 424bp and 454bp. The internal standard could accurately determine the size of PCR products amplified with the DNATyper15 kit. Conclusion Using this method, the standard molecular weight fragment mixture which meet the requirements of research and laboratory use was prepared, perfectly providing a new method for preparation of the DNA molecular weight standards. The peaks and the size of the prepared DNA internal lane standard are correct, which can be used to calculate the DNA fragments size in capillary electrophoresis.
3.Clinical Observation of Tongmai Acupoint Plaster Combined with Alprostadil Injection for Treatment of Lower Extremity Arteriosclerosis Obliterans
Jianhua WU ; Zhenguo JU ; Yi WANG ; Jidong ZHANG ; Haiyan YANG ; Chaoqun MA ; Lixia CHEN
Chinese Journal of Information on Traditional Chinese Medicine 2017;24(9):30-34
Objective To observe the efficacy of Tongmai Acupoint Plaster combined with Alprostadil injection for treatment of lower extremity arteriosclerosis obliterans (ASO). Methods Totally 180 cases of ASO Ⅱ(intermittent claudication period) patients were randomly divided into acupoint sticking group, combination group, Western medicine group, with 60 cases in each group. All groups quit smoking, had diet control, proper exercise, control of blood sugar, stop hypolipidemic and anti-coagulation medicine. The acupoint sticking group was treated with Tongmai Acupoint Plaster, each selected with the efficacy of treatment of lower limbs paralysis acupoint 10-12, alternating dressing; dressing was changed 1 time a day, 40 day as a treatment course. Western medicine group was given Alprostadil injection 10 μg, with 10 mL of normal saline, intravenous infusion, once a day, 15 d as a treatment course, for two courses, with 10 d as interval. Combination group was treated with Tongmai Acupoint Plaster combined with Alprostadil injection, the same as the application method above. The clinical efficacy, the scores of symptoms and signs, the ankle brachial index, blood lipid, the peak value of blood flow in the tibial anterior,posterior tibial, and dorsalis pedis arteries were observed and compared between the 2 groups. Results The total effective rate was 78.33% (47/60) in the acupoint sticking group, 80.00% (48/60) in the Western medicine group, and 93.33%(56/60) in the combination group, with the combination group better than the acupoint sticking group and Western medicine group (P<0.05). There was no statistical significance between acupoint sticking group and Western medicine group (P>0.05). There was statistical significance in scores of symptoms and signs, ankle brachial index before and after treatment in the three groups (P<0.05, P<0.01); There was no statistical significance after treatment (P>0.05). There was statistical significance in blood lipids before and after treatment in acupoint sticking group and combination group (P<0.05). There was statistical significance in tibial anterior, posterior tibial, and dorsalis pedis artery peak before and after treatment in the three groups (P<0.05, P<0.01). Conclusion Tongmai Acupoint Plaster has good efficacy in the treatment of ASO, equivalent with the efficacy of Alprostadil injection, which can regulate blood lipids and improve arterial blood flow. Ther combination of them has better efficacy.
4.Progress of intestinal flora in colorectal cancer
Cancer Research and Clinic 2019;31(6):425-428
The pathogenesis of colorectal cancer is related to genetic and environmental factors. Chronic inflammation of the intestinal mucosa is one of the most important factors in environmental factors. In inflammation factors, Intestinal flora plays a role in bridging and inducing intervention. Environmental changes disrupt the homeostasis of intestinal flora, intestinal flora maladjustment occurred, bacteria induces intestinal mucosal inflammation. The pathogenic bacterium adheres to the surface of the intestinal mucosa, it produces cytotoxic and genotoxic products, intestinal epithelial cells undergo genetic damage. The synthesis and metabolites of bacteria also control the occurrence of colorectal tumor process. This process leads to the progression of inflammation to cancer. This article reviews the process of intestinal flora mediated from inflammation to carcinogenesis, and the latest progress in related pathogenic bacteria, and proposes that the intestinal flora can be adjusted and targeted removal of the conditional pathogenic bacteria, and achieve the goal of cancer prevention. The relationship between intestinal flora, intestinal inflammation and colorectal cancer is reviewed.
6.The application of multiplex fluorescent PCR in the diagnosis of clinical bloodstream infection
Yiping WANG ; Songbo YUAN ; Yanhong YU ; Yong LU ; Jianfei YING ; Chaoqun XIA ; Jian MA ; Wanjun YU
Chinese Journal of Laboratory Medicine 2019;42(2):123-127
Objective To observe the application of multiple fluorescent PCR (Polymerase Chain Reaction) in the diagnosis and clinical detection of bloodstream infection. Methods 256 blood cultures were collected by the Laboratory Department of Yinzhou People′s Hospital from January 2018 to May 2018, and were detected by multiplex fluorescent PCR. The results of the PCR were compared with the traditional blood culture bacteria identification instrument (traditional blood culture method). The number of positive and negative samples and the number of corresponding samples of the two methods were counted. Then, they analyzed the specificity and sensitivity of multiplex fluorescence PCR in the diagnosis of bloodstream flow infections. Results A total of 18 pathogenic microbes are detected through blood culture and PCR. Multiple fluorescent PCR detects 142 positive samples and 114 negative samples. Among them, 132 samples also show positive through blood culture, and 111 samples show negative. The consistency rate between multiple PCR and traditional blood cultures is 91.8% (235/256). The negative prediction rate of PCR is 97.4% (111/114), sensitivity rate 97.8% (132/135), specificity rate 91.7% (111/121). 10 samples show positive through multiple fluorescence PCR but negative for blood culture, 3 samples show positive through blood culture but negative for PCR. Besides, there are 3 types of pathogens that exceed the detection range of PCR. Conclusions Multiplex PCR method can detect 17 pathogens in blood culture specimens of patients, which can not only optimize the traditional blood culture process, but also greatly shorten the reporting time and improve the detection rate of blood culture methods. Especially for patients treated with antibiotics, it can reduce missed detection and improve the diagnostic rate of bloodstream infections.
7.Research advances on function and molecular mechanism of peroxisome proliferator activated receptors in liver diseases
Panfei MA ; Chaoqun WANG ; Mingqi GU ; Yong MA
Chinese Journal of Digestive Surgery 2019;18(4):403-406
Peroxisome proliferator activated receptors (PPARs) are ligand activated nuclear transcription factors and one of the members of the non steroidal nuclear receptor superfamily.It can be divided into PPAR alpha,PPAR beta / delta and PPAR gamma three subtypes according to the different of its structure and function.Previous studies showed that PPARs participated in biochemical reactions and the regulation of other important biological activities such as lipogenesis,glucose metabolism,inflammation,insulin sensitivity and so on.Recent researches showed that PPARs also had effect of anti-fibrosis,protecting ischemia-reperfusion injury and inhibiting the growth and differentiation of tumor cells.This article reviewed the recent research progress of PPARs in these liver diseases.
8.Surgical treatment of pilonidal disease
Bao YUAN ; Jing YANG ; Hong GU ; Jiong MA ; Jianhui MIAO ; Wanjin SHAO ; Yunfei GU ; Chaoqun MA
Chinese Journal of General Surgery 2020;35(1):46-48
Objective To study the surgical treatment of the pilonidal disease.Methods The clinical data of 33 cases of the pilonidal disease were retrospectively analyzed from Jul 2007 to Feb 2014.18 cases were treated with Excision and Marsupialization,and 15 cases were treated with Rhomboid excision and Limberg flap.Results All 18 cases in the excision and marsupialization group,were cured by surgery.all 15 cases in the rhomboid excision and Limberg flap group were cured,five of these cases were delayed healing dehiscence or necrosis,all this cases were healed after dressing drainage.The average healing time of the Limberg flap group was shorter than that of the Marsupialization group[(19 ±7) d vs.(37 ± 12) d,t =6.556,P < 0.01].Postoperative recurrence of the Marsupialization group was 1 case,the recurrence rate was 5.6%,and there was no recurrence after Limberg flap transfer.The recurrence rate of the 2 groups was statistically insignificant (P > 0.05).Conclusion The excision and marsupialization and the rhomboid excision and Limberg flap are effective in the treatment of the pilonidal disease,and the Limberg flap transfer is recommended in complicated and recurrence cases.
9.Study on Quality Standard of Bushen Quyu Granules
Wanfei LU ; Chaoqun GU ; Jiali MA ; Qiang YUAN
China Pharmacy 2019;30(9):1230-1235
OBJECTIVE: To establish the quality standard for Bushen quyu granules. METHODS: TLC was used for qualitative identification of Rosa laevigata, Cuscuta chinensis, processed Fallopia multiflora and Lithospermum erythrorhizon in Bushen quyu granules. And then, the content of total polysaccharides in Bushen quyu granules was determined by UV spectrophotometry. HPLC method was used for the content determination of rutin, quercetin and hyperin in Bushen quyu granules. The determination was performed on BDS C18 column with mobile phase consisted of acetonitrile-0.08% phosphoric acid solution (gradient elution) at the flow rate of 1 mL/min. The column temperature was 30 ℃, and detection wavelength was set at 370 nm. The sample size was 10 μL. RESULTS: TLC test sample chromatogram of 4 medicinal materials showed the same spot or fluorescence at the corresponding position with the reference substance and control medicinal materials. The linear range of glucose, rutin, quercetin and hyperin were 0.003-0.018 mg/mL, 0.225-7.20 μg/mL, 0.07-2.24 μg/mL and 1.25-39.88 μg/mL(r=0.999 5 or 0.999 9, n=6). RSDs of precision, stability and reproducibility tests were all less than 3% (n=6). Average recoveries were 102.2%, 101.2%, 100.9%, 101.0% (RSD=1.28%, 2.93%, 2.41%, 1.59%, n=6). Average contents were 0.46 g/g, 5.48 μg/g, 8.18 μg/g and 102.88 μg/g(n=3). CONCLUSIONS: Established quality standard of Bushen quyu granules is accurate and reliable, and can provide scientific reference for quality control of Bushen quyu granules.
10.Thoughts and strategies on ethical issues in clinical research of surgery
Lijie TAN ; Ziyu LI ; Yan ZHANG ; Jizhou WANG ; Lianxin LIU ; Jianming WANG ; Yun LU ; Chaoqun MA ; Surong HUA ; Wenming WU ; Yupei ZHAO ; Hongwei YAO ; Jingjing HE ; Yuanyuan KONG ; Zhongtao ZHANG ; Ziwen LIU
Chinese Journal of Digestive Surgery 2019;18(1):57-64
Medical ethics has a long history and rich connotations.It has developed from the simple "medical morality" of ancient times to the modem medical ethics.The basic principles of medical ethics include autonomy,non-maleficence,beneficence,justice,and so on.Researchers often conduct clinical researches in the balance between achievements and ethical norms.Clinical researchers of surgery should have a deep understanding of medical ethical principles and strictly abide by medical ethics.Ethics committee should strictly perform their duties and play the role of inspection and supervision.Modem medical knowledges should be popularized throughout the society to make clinical research correctly understood.Adhering principles of ethics first,people orientation and cooperation practice,with patients' benefit as evaluation criteria,balance of surgical "Dao" and "Shu" can be achieved.