1.The effect of ethanol embolization for vascular malformations on cardiopulmonary function:recent progress in research
Deming WANG ; Lixin SU ; Xindong FAN
Journal of Interventional Radiology 2015;(9):826-829
The treatment of vascular malformations has been a difficult clinical subject. At present, the main therapeutic methods include embolization/sclerotherapy, surgical excision, laser treatment, etc. However, it is often difficult to obtain a satisfactory clinical effect. As it can induce the vascular endothelial denudation resulting in protein degeneration, ethanol embolization can obtain the effect of complete obliteration of the diseased vascular lumen. Although ethanol embolization of vascular malformations has already achieved satisfactory clinical effect, the fear of cardiac and pulmonary accidents has limited the application of this technique in clinical practice. This paper aims to make a comprehensive review concerning the effect of ethanol embolization for vascular malformations on the cardiopulmonary functions.
2.Clinical application of morselized allogeneic bone processed by lyophilization and radiation
Zhiqiang WANG ; Qi WANG ; Lixin SU
Chinese Journal of Orthopaedics 1996;0(10):-
Objective To investigate the clinical result, complication and influential factors of lyophilized and radiation-sterilized morselized allogeneic bone. Methods Between December 1995 and December 2000, 778 cases with implantation of bone allograft were performed. There were 188 females and 590 males with an average age of 37.2 years (range, 6-76 years). The lyophilized morselized allogeneic bone was processed according to American Association of Tissue Bank (AATB) standards and was sterilized by radiation. The bone allograft was rehydrated in fresh blood or in physiologic saline before implantation. The morselized allograft was used to fill defects attributable to various causes such as 84 bone tumors (10.8%), 551 fractures (70.8%), 143 joint fusions (18.4%). After implantation of the bone allograft, drainage was carried out for 2~3 days and antibiotics were used to prevent infection. The average amount of the allograft implanted was 24 g (range, 4-64 g). Results All patients were followed up clinically and radiographically. The minimum length of follow-up was 3 years with an average follow-up period of 59.7 months (range, 36-96 months), 722 allograft unions occurred at a mean of 4.5 months postoperatively (range, 3-8 months). There were 137 complications, included 44 of wound effusion (5.65%), 29 of delayed wound healing (3.72%), 2 of profuse liquid accumulation (0.26%), 43 of fracture non-union (5.52%), 4 of tumor recurrence (0.51%), 9 of fusion failure (1.15%) and 6 of fracture (0.77%). Estimated by the combined Mankin and Komender standards, 688 (88.44%) patients were satisfied with their outcomes while the other 90 (11.56%) patients were dissatisfied. Conclusion The lyophilized and radiation-sterilized morselized allograft is of good tissue compatibility and able to promote bone formation, it can be considered as a convenient, safe, and available material for bone transplantation. The important factors affecting allograft healing are the mechanical stability in the recipient region, local blood supply for the site of grafting and the surgical technology. The major complications of allograft are late infection and re-fracture.
3.Ethanol embolization of auricular arteriovenous malformations
Xindong FAN ; Hongying YI ; Lianzhou ZHENG ; Lixin SU ; Jiawei ZHENG
Journal of Interventional Radiology 2009;18(11):812-815
Objective To present the authors' initial experience of treating auricular arteriovenous malformations (AVMs) with ethanol embolization and to assess the clinical effectiveness of this therapeutic method. Methods Twenty-two patients with AVMs were enrolled in this study. Through local puncturing or super-selective catheterization the absolute ethanol, or diluted alcohol (based on the pattern of the AVMs), was manually injected into the abnormal vascular plexus of the auricular lesion. The clinical results were estimated with physical examination or angiography at intervals of 3 ~ 4 month, and telephone questionnaire was made at monthly intervals for all patients. Results Thirty-eight ethanol embolization procedures were performed, the amount of ethanol used during the procedure ranged from 4 ml to 65 ml. After the treatment the clinical symptoms were improved, which were manifested as healing of the ulceration, stop of bleeding, disappearing or alleviation of tinnitus. Angiographic examination showed that the abnormal vascular lesion was completely vanished in 9 cases, decreased by 50% -75% in 8 cases and decreased less than 50% in remaining 5 cases. The common complications included irreversible local necrosis and vesiculation. Conclusion For the treatment of auricular AVMs ethanol embolization is an effective and safe method, which might become the therapy of first choice.
4.Effect of morphine on P-glycoprotein expression in mouse brain microvascular endothelial cells
Jian SU ; Xiangcai RUAN ; Shouzhang SHE ; Lixin XU
Chinese Journal of Anesthesiology 2010;30(6):700-702
Objective To investigate the effect of morphine on P-glycoprotein (P-gp) expression in mouse brain microvascular endothelial cells. Methods The mouse brain microvascular endothelial cell line b. End3 was purchased from ATCC company (USA) and cultured at 37 ℃ in high glucose serum-free medium RPMI 1640 in 10 cm petri dishes and assigned to one of 3 groups(n = 9 each): Ⅰ control group (group C); Ⅱ morphine group (group M) and Ⅲ PDTC + morphine group (group P + M). In group M the cells were exposed to morphine 1 μg/ml while in group P + M the cells were pre-incubated with PDTC (NF-κB inhibitor) 5 μmol/L for 1 h before treatment with morphine. In group M and P+ M after being treated with morphine 1 μg/ml for 24 h, the cells were collected for determination of P-gp expression and NF-κB p65-abcb1b protein-DNA binding analysis. Results P-gP expression and NF-κB p65-abcb1b protein-DNA binding were up-regulated in group M as compared with group C. The up-regulation was negated by pre-incubation with PDTC in group P + M. Conclusion Morphine can induce up-regulation of the expression of endogenous P-gp in mouse brain microvascular endothelial cells by NF-κB mediated-abcb1 b gene activation.
5.The fibroblast growth factor signaling pathway
Yuhan SU ; Hua DU ; Guangming NIU ; Jing WANG ; Lixin WENG
Chinese Journal of Tissue Engineering Research 2016;20(15):2255-2264
BACKGROUND:In the earliest stages of embryonic development and organ formation, fibroblast growth factor family members function as mediating the growth, differentiation, survival, and morphology of progenitor cels. Fibroblast growth factor mediates metabolic function, tissue repair and regeneration in mature tissues by reactivation of signal pathways.
OBJECTIVE:To summarize and explore the role of the fibroblast growth factor signaling pathway in tissues and organs.
METHODS:A computer-based online search was conducted in CNKI and PubMed databases by using the key words of “fibroblast growth factor, signaling pathway” from 2010 to 2016 and 2000 to 2016, respectively to screen the relevant literatures. The language was limited to both Chinese and English. Research progress in the fibroblast growth factor signaling pathway was summarized.
RESULTS AND CONCLUSION:A total of 47 literatures were included. Mammalian fibroblast growth factor family is composed of 18 secreted signal proteins which interact with 4 tyrosine kinase signal fibroblast growth factor receptors. Interaction of fibroblast growth factor ligand with the receptor is regulated by a protein or cofactor binding proteoglycans and extracelular proteins. Activation of fibroblast growth factor receptor mediates interaction with cytoplasmic adapter protein, RAS-MAPK, and PI3K-AKT, phospholipase Cγand STAT signaling pathway by phosphorylation on a specific tyrosine residue. Four structuraly related intracelular non-signaling fibroblast growth factors regulate the voltage-gated sodium ion channels by their interactions. Fibroblast growth factors exist in almost al tissues and organs, and developmental defects and abnormal activity of this pathway (destruction of organogenesis) is associated with damage response to injury, metabolic disorders and cancer.
6.Preparation and evaluation of quality control serum for antinuclear antibody testing
Lixin WANG ; Yurong ZHANG ; Rong SU ; Jun WEI
Chinese Journal of Laboratory Medicine 2013;(5):410-413
Objective In order to further enhance the repeatability and comparability for antinuclear antibody testing results in clinical laboratory,explore the reliable preparation method,and develop the quality control serum that is capable of meeting the needs of routine antinuclear antibody testing.Methods According to selection requirements,the serum from patient which is used to test antinuclear antibody was selected,and then we prepared the quality control serum.through evaluation of index in appearance of serum,aseptic level,uniformity and stability in intra-assay and inter-assay etc,the study optimized the method and condition for preparation,also confirmed the performance of prepared quality control serum.Results Prepared quality control serums are able to preserved stable at-20 ℃ 270 d,it can be keep stable more than 8 h after rewarming at room temperature.There are no significant differences between the commercialization of quality control performance and the freez-thawed uniformity and stability in intra-assay and inter-assay,it are keep consistent to result that before freezing testing.Conclusions Suitable methods and experimental conditions are explored for preparation of antinuclear antibody testing quality control substance.Each batch of prepared quality control substance has good uniformity and stability.The prepared quality control serum are able to meet needs of antinuclear antibody testing,and meet quality control requirements.
7.Development and application vehicle-mounted wireless tele-consultation system
Lixin LI ; Zuchun TAN ; Yonglin SU ; Ziwen LIU ; Hefei WANG
Chinese Medical Equipment Journal 1989;0(03):-
The vehicle-mounted wireless tele-consultation system involves computer network technology, satellite communication technology and multimedia video technique in, which is composed of GPS, vehicle -mounted satellite communication sub-system, automatic satellite-tracking sub-system and computer control system. The system can be applied to medical command, operation tele-instruction, tele-education, tele -consultation, uploading medical service data and searching electronic medical information,and thus the field medical treatment and medical service are both improved. This paper introduces such aspects of the system as its principle, components, functions and application to medical service support.
8.Diagnostic value of serum PG,G-17 combined with CA72-4 and 13C UBT in early gastric cancer
Xishun HUANG ; Lixin DENG ; Yaohui QIU ; Junkai SU
Chongqing Medicine 2017;46(10):1346-1348
Objective To investigate the change situation of serum pepsinogen (PG) and gastrin-17(G-17) levels change in gastric cancer,and on this basis diagnostic significance of combined detection of carbohydrate antigen 72-4 (CA72-4) and 13C urea breath test (13C UBT) detection in early gastric cancer.Methods The enzyme-linked immunosorbent (ELISA) method was used to detect serum PG Ⅰ,PG Ⅱ and G-17 levels in healthy people,atrophic gastritis group and gastric cancer group.Firstly the changes of above three indicators were compared;then according to PG Ⅰ and G-17,the carcinoma group was divided into the group A,B,C and D,these four groups were detected the helicobacter pylori infection status by 13C UBT.Finally the CA72-4 levels were performed the statistics by using the tumor markers detection results.Results Serum PG Ⅰ level and PG Ⅰ/PG Ⅱ ratio in the control group,atrophic gastritis group and gastric cancer group was gradually declined,the difference was statistically significant (P<0.05);serum G-17 level in the control group,atrophic gastritis group and gastric cancer group was gradually increased,the difference among 3 groups was statistically significant (P<0.05);in early gastric cancer rate ratio among 4 groups,which in the group B was highest,the difference was statistically significant (P<0.05);in the comparison of positive rates of 13 C UBT and CA72-4 level in early gastric cancer among 4 group,the 13 C UBT positive rate and CA72-4 level in the group B were higher than those in the group A,C and D,the differences were statistically significant (P<0.05).Moreover the CA72-4 level in the group B had significant difference between early gastric cancer and advanced gastric cancer (P<0.01).Conclusion Serum PG Ⅰ reduce and G-17 increase combined with CA72-4 high level and 13C UBT positive have an important forewarning value for the diagnosis of gastric cancer.
9.Simultaneous determination of four kinds of components in Tongda Granule by HPLC-DAD
Yonggui SONG ; Dan SU ; Lulu GENG ; Lixin SUN
Chinese Traditional Patent Medicine 1992;0(07):-
AIM:To determine four bioactive components in Tongda Granule ( Radix Paeoniae alba,Flos Carthami,Radix Scutellariale,etc. ),namely hydroxy safflower yellow A,peoniflorin,ferulic acid,and baicalin. METHODS:The isolation was performed on an Alltech Apollo C18 (250 mm ? 4. 6 mm,5 ?m) with the mobile phase consisting of methanol-0. 2% (w)phosphoric acid for gradient elution. The flow rate was 1. 0 mL/min and the column temperature was set at 30 ℃. RESULTS:This method was successfully applied to determining four bio-active components in Tongda Granule. The standard curves were linear over the ranges of 5. 20 -104 mg/L for hydroxy safflower yellow A(r =0. 999 1),25. 6 -512 mg/L for peoniflorin (r =0. 999 6),7. 72 -154. 4 mg/L for ferulic acid (r =0. 999 5),32. 5 -650 mg/L for baicalin (r = 0. 999 5),respectively. The average recoveries were 101. 1% ,99. 6% ,98. 9% and 101. 9% ,RSD were 2. 3% ,1. 8% ,2. 6% and 1. 3% ,respectively. CONCLUSION:The method is simple and can be used as a quality control method for Tongda Granule.
10.Improvement on Formula and Preparation Method of ZnO Lotion
Lianling SU ; Shaohua XIAO ; Juncheng WANG ; Lixin LU ; Li LI
China Pharmacy 1991;0(05):-
OBJECTIVE: To improve the formula and the preparation method of ZnO Lotion so as to make it more adaptable to the clinical needs. METHODS: Adjust the previous dosage of menthol and ethanol and the preparation method was shifted to wet-sifting from trituration. RESULTS: The improved preparation was more exquisite and more stable in quality yet with less irritation. And the improved preparation method is more convenient in operation. CONCLUSION: The improved formula and improved preparation method are worth to be widely used.