2.Preparation and Evaluation of Core-Shell Resveratrol Molecularly Imprinted Microspheres
Minglei ZHANG ; Zhaohui ZHANG ; Li LIU ; Liji ZHANG ; Lihua NIE
Chinese Journal of Analytical Chemistry 2010;38(1):129-132
Employing resveratrol as template molecule, acrylamide as functional monomer and ethyleneglycol dimethacrylate as cross-linkers, a core-shell resveratrol imprinted microspheres was prepared based on the surface of SiO_2 with a surface imprinting technique.The molecularly imprinted microsphere was characterized by infrared spectroscopy and scanning electron microscopy, and the results showed that the surface grafting of molecularly imprinted polymer-shell particle on SiO_2 was successful and the particles were evenly distributed.High performance liquid chromatography was also used to investigate the imprinted microsphere adsorption per formance, and the results showed that the imprinted microsphere exhibited good recognition performance.The maximum adsorption capacities were Q_(maxl)=9.087 mg/g and Q_(max2)= 13.80 mg/g by the model of Scatchard analysis.The imprinted micospheres was applied to separate resveratrol from the extraction of rhizoma polygoni cuspidate successfully.
3.Budesonide inhibits murine asthmatic airway inflammation through reduction IL-22 secretion
Minglei WANG ; Wenge WANG ; Junhong ZHANG ; Dawei ZHANG ; Kesong YAN
Chinese Journal of Comparative Medicine 2017;27(5):55-59
Objective To study the effect of Interleukin-22 (IL-22) on murine asthmatic airway inflammation and airway remodeling, observe the effect of budesonide on IL-22 of asthmatic mouse model, explore the mechanism of budesonide in the treatment of asthma.Methods Ovalbumin(OVA) was used as an allergen to sensitize and challenge the mice.24 female specific-free (SPF) BALB/c mice aged four weeks were randomly divided into 3 groups:control group, asthma group and budesonide treatment group (BUD group).For Histopathological Examination, HE staining was used to measure the inflammation scores, AB-PAS staining was used to measure the hyperplasia of goblet cells and mucin.Enzyme-linked immunosorbent assay(ELISA) was used to analyze IL-22 levels in bronchoalveolar lavage fluid (BALF).Quantitative Real-time PCR was performed to analyze the effects of budesonide on IL-22 mRNA levels in lung tissue.Results The inflammation scores of asthma group were elevated compared with the control group.An overall change towards less severe asthmatic airway inflammation by the end of the trial was observed in the BUD group.IL-22 levels in BALF were significant decreased after the treatment of budesonide, the mRNA levels of IL-22 were obviously decreased in BUD group, too.A significant positive correlation was observed between the mRNA levels of IL-22 and airway inflammation.Conclusions The increasing IL-22 secretion can lead to the occurrence of airway inflammation of asthma.Budesonide can inhibit the expression of IL-22, thereby Budesonide could inhibit the development of airway inflammation of asthma.
4.Capillary electrophoresis method for the determination of flavonoids.
Minglei CHEN ; Wei HU ; Chao ZHANG ; Yun FANG
Acta Pharmaceutica Sinica 2011;46(8):883-9
Due to their biological and physiological importance, flavonoids received considerable attention in the literature. This review discusses the widely used analytical method i.e. capillary electrophoresis (CE) including the chiral flavonoids separation and the hyphenation of CE and MS. Techniques used for enhancement of sensitivity such as stacking, sweeping, isotachophoresis etc. were also discussed.
5.Analysis about the complications of transperitoneal laparoscopic dismembered pyeloureteroplasty
Yang YANG ; Weiping ZHANG ; Zhenwu LI ; Minglei LI ; Hongcheng SONG
Chinese Journal of Urology 2017;38(1):23-27
Objective To summarize and analyze the intraoperative and postoperative complications arising from the Anderson-Hynes transperitoneal laparoscopic pyeloplasty (LP) procedure in the treatment of patients with ureteropelvic junction obstruction (UPJO).Methods There were 154 consecutive patients who underwent transperitoneal LP between November 2011 and December 2015.These patients' data were retrospectively analyzed for intraoperative and postoperative complications.All the 154 patients were primary UPJO.Of the 154 patients,124 (80.7%) were males and 30 (19.3%) were females,114(74.0%) were found in the left side,32(21.0%)were found in the right side,while 8 (5.0%)were found in bilateral.The mean age was 3.9 years old(ranged 8-180 months).28 patients(18.2%) have the history of urological infection or flank pain.Results Mean operative time was 89 minutes (ranged 42-330 min).The mean blood loss was 7.5ml (ranged 2-50 ml),and no blood transfusions were necessary intra-and post-operatively.The mean postoperative hospital stay was 5.7 days (ranged 3-28 days).The mean follow-up duration was 28 months (ranged 6-54 months).2 laparoscopic surgeries were converted into open surgeries.One patient suffered with repeated infection after removing the double J stent two months postoperatively.The ultrasound and intravenous urography showed the more severe obstruction compared to that before surgery.The second operation was performed and resolved this problem.The overall success rate was 98%.All 28 patients,who has preoperative symptoms,reported a complete resolution of symptoms after the procedure.Intraoperative complication occurred in 11 (7.1%) patients,including injury of parapyelic vessel while in 3 (1.9%),the misplacement of the Double-J stent in 6 (3.8%),conversion to laparotomy in 2(1.3%).The postoperative complications occurred in 24(15.6%) patients,including urine leakage in 10(6.5%),infectious urinoma in 7 (4.5%),infection after removing the Double-J in 4 (2.6%),temporary intestinal obstruction,recurrent UPJO were in 1 (0.6%)respectively.Conclusions Our retrospective analysis confirmed that LP is an effective and safe procedure.The most common intraoperative complications are difficulty in double-J stent insertion.The most common postoperative complication is urine leakage.
6.Application of laser scanning 3D technology in rhinoplastic prothesis
Baokai LI ; Hui ZHANG ; Jiafu LI ; Huaxin LONG ; Minglei SUN
Chinese Journal of Medical Aesthetics and Cosmetology 2016;22(4):209-211
Objective To investigate the effect of application of 3D printing technology in the rhinoplastic prothesis with the help of the laser scanning 3D technology.Methods Before the rhinoplastic prothesis,we got the whole facial morphology of patients by laser scanning technology,and printed out the facial model which was 1:1 with the real and then discussed with patients to confirm the ideal nose three-dimensional effect.In the process of operation,doctors were guided by the data for the procedure.Results Among 33 patients who were followed up postoperatively,only one patient's nosal tip dropped,then were repaired with her ear cartilage,both of us found satisfactory effect after repair,and without postoperative complications.The rest 32 patients were satisfied with their nose.Conclusions The laser scanning 3D technology is worth trying and using in plastic surgery.
7.A randomized control clinical study on small-needle-knife therapy combined with exercise therapy for knee osteoarthritis:3-month follow-up visit
Minglei ZHAO ; Yuehong BAI ; Ying ZHANG ; Wenmin SHI
Chinese Journal of Tissue Engineering Research 2016;20(7):1057-1064
BACKGROUND:Smal-needle-knife therapy for knee osteoarthritis has no uniform location, operation and mechanisms of action. Studies have proved that exercise therapy can enhance muscle strength, increase stability of the knee, improve joint range of motion, and effectively relieve pain.
OBJECTIVE:To observe the clinical effect of smal-needle-knife therapy combined with exercise therapy for treatment of knee osteoarthritisvia a randomized controled clinical trial.
METHODS:122 patients were randomly divided into treatment group (n=61; smal-needle-knife therapy combined with exercise therapy) and control group (n=61; low-frequency therapy combined with exercise therapy). Then, clinical efficacy in the two groups were assessed by statistical analysis of visual analog scale, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), sweling degree of the knee joint, quadriceps circumference, flexion and extension of the knee joint before and after treatment. Meanwhile, adverse reactions in patients were recorded for safety evaluation.
RESULTS AND CONCLUSION:(1) The visual analog scale and WOMAC scores in the two groups were both significantly improved at 2 weeks after treatment (P < 0.05). Moreover, these scores in the treatment group were significantly lower than those in the control group (P < 0.05). (2) At 12 weeks after treatment, the WOMAC score in the treatment group was better than that in the control group (P< 0.05), and the range of motion of the knee joint was also better in the treatment group than the control group (P< 0.05). (3) According to the full analysis set and per protocol set, the total efficiency rats in the treatment group were both superior to those in the control group (P< 0.001). (4) In the treatment group, there were four cases of surgery, four cases lost to folow-up, and two cases of mild adverse reactions; in the control group, there were six cases of surgery, three cases lost to folow-up, and no adverse reaction. Taken together, smal-needle-knife therapy and physiotherapy both have certain clinical effects on knee osteoarthritis. Smal-needle-knife therapy combined with exercise therapy is superior to physiotherapy combined with exercise therapy in the total efficiency. Folow-up results of 3 months have been confirmed, but long-term effects need further exploration.
8.An analysis of Mycoplasma detection and drug sensitivity test of 3 127 urogenital tract infection women
Jing LIU ; Minglei ZHANG ; Xueting BAI ; Jiao MENG ; Ruonan CAI
International Journal of Laboratory Medicine 2014;(19):2622-2623
Objective To analyze Mycoplasma detection and drug sensitivity test of 3 127 urogenital tract infection women ,and to provides important basis for clinical diagnosis and treatment .Methods Mycoplasma detection and drug sensitivity of 3 127 uro-genital tract infection women were detected .Results Among 3 127 cases ,1 800 patients were detected Mycoplasma ,and the posi-tivity was 57 .6% .The infection rates of Ureaplasma urealyticum(Uu) ,Mycoplasma hominis(Mh) and Uu+ Mh mixed infection were 46 .2% ,1 .2% ,10 .1% .Uu was sensitive to minocycline ,doxycycline and clarithromycin .Mh was sensitive to minocycline , doxycycline and josamycin .Uu+ Mh mixed infection was sensitive to minocycline ,doxycycline and josamycin .Conclusion Myco-p lasma infections have been the major pathogen of urogenital tract diseases ,the clinical treatment should be based on drug sensitivity test .
9.Deepening the Reform on Biochemical Experiment Teaching and Culturing the Creative Ability of College Students
Wei TANG ; Shezong SUN ; Minglei ZHU ; Hongmei ZHANG
Chinese Journal of Medical Education Research 2003;0(02):-
In order to be in accordance with the development of college education,the contents and methods of the teaching of basic biochemical experiment as well as test evaluation were reformed.Experimental teaching was classified as three types: the element,the improvement and the research.Besides,contents was chosen and the order was reasonably arranged.Results showed that under the new teaching system,college students realized the importance of biochemical experiment and experimental skills were improved.
10.Diagnosis and treatment of bladder benign neoplasm in children
Ying ZHANG ; Hongcheng SONG ; Ning SUN ; Weiping ZHANG ; Wenwen HAN ; Jun TIAN ; Minglei LI ; Chengru HUANG
Chinese Journal of Urology 2017;38(8):600-603
Objective To summarize the experience about the diagnosis and treatment of bladder benign neoplasm in children.Methods A retrospective study was conducted for a total of 15 patients with bladder benign neoplasm from October 2006 to May 2016.There were 10 males and 5 females with a mean age of 8.7 years (ranging 1.1-13.8 years).The clinical manifestations of 15 patients included hematuria in 9 patients,frequent micturition with urgent and painful in 3 patients,dysuria in 1 patient,abdominal pain in 2 patients and headache during voiding in 1 patient.Ultrasound showed solid masses in the bladder with iso-echoic or nonhomogeneously hypoechoic.CT scanning showed regular or irregular mass with some enhancement in the bladder.All cases received tumor complete resection by opening operation and bladders were preserved.Among the 15 cases,neoplasms located in the anterior,posterior and lateral wall of bladder in 9 cases,ureteral orifice in 4 cases and trigone of bladder in 2 cases.The size of tumors ranged from 1.2 to 6.0 cm (mean 3.1 cm).The tumors were unifocal and seemed like papillary or cauliflower.The literatures of benign neoplasm of bladder were reviewed,which focused on the clinic characters,pathological classification and therapeutic method.Results Pathologic type included papilloma in 5 patients,inverted papilloma in 1 patient,inflammatory myofibroblastic tumor in 7 patients,hemangioma in 1 patient,pheochromocytoma in 1 patient.Fifteen patients were followed up for 6 to 36 months,mean 26.7 months.All patients recovered well without relapse or metastasis Conclusions Bladder benign neoplasm in children is rare with many kinds of pathological classification.The major clinical manifestation is gross hematuria while dysuria is unusual.Tumors are fewer in trigone of bladder.The best treatment is to resect the tumor completely with bladder preservation if possible.