1.Development of clinical and basic research in gynecological oncology
China Oncology 2006;0(11):-
With the emergence of new concepts, methods and techniques in modern medicine, the basic research and clinical treatment for gynecological oncology has rapidly developed in the past couple of years. Evidence-based medicine, individualized therapy and microinvasive therapy give us more opportunities to treat the patient. Nowadays, it is possible for the clinic to implement new approaches to improve the outcome and the quality of life for the patients with minimal side effects at the same time. There has been a lot of reports from in vitro studies suggesting that gonadotrophin may play an important role in tumorigenesis, estrogen may promote tumor cell proliferation through PAX2 gene. Survivin, a protein serving as an apoptosis inhibitor, may be crucial for the regulation of tumor cell proliferation and apoptosis.
2.Development of model S2000 surgeon backpack and medical corpsman backpack
Xiaojun SUN ; Feng TIAN ; Wanyu GAO
Chinese Medical Equipment Journal 2003;0(S1):-
This paper introduces the surgeon backpack and medical corpsman backpack which are newly developed for PLA.The twokinds of backpacks being waterproof,water can't penetrate intothem when they are in the rain or floating on water.The basic performance experiments,ergonomics tests and army tryout are performed.The results show that the backpacks are designed reasonably and easy touse.The burthen on the whole backpacks is distributed in the equipment uniformly due toits structure.The physical energy consumption of the person carrying the backpacks decreases due tothe same reason.The medical equipments in the backpacks can accomplish the first aid operations such as binding up,stanching,acesodyne,fastness,ventilation,infection prevention and anti-shock.
3.Clinical analysis of cetuximab combined with intensity modulated radiation therapy in treatment of local regionally advanced nasopharyngeal carcinoma
Yijing YE ; Xiaojun LU ; Feng LEI
Chinese Journal of Primary Medicine and Pharmacy 2011;18(24):3323-3325
ObjectiveTo evaluate the efficacy and toxicity in local regionally advanced nasopharyngeal carcinoma(NPC) patients treated by cetuximab combined with intensity modulated radiation therapy.Methods58 cases of untreated NPC patients were randomly divided into treatment group and control group.The treatment group was given the treatment of cetuximab combined with intensity modulated radiation therapy,the control group was given the treatment of intensity modulated radiation therapy.The short-term efficacy and toxicity were evaluated,followed up for 1-year the objective response was evaluated.ResultsAfter treatment and 3 months after treatment,the CR rate of the nasopharynx and cervical lymph node of the treatment group were higher than the control group,compared with control group the difference was significant(P <0.05) ;Follow-up rate was 100%,the median follow-up time was 12 months,all patients were no deaths in the follow-up period; the local control rate of the treatment group was 89.3%,it was higher than the control group(73.3% ),compared with control group the difference was significant( P <0.05) ;The distant metastasis rate of the treatment group was 3.6%,it was lower than the control group(23.3 % ),compared with control group the difference was significant( P <0.05) ;Most acute toxicity of the two groups were 1 to 2 degrees,and the difference was not statistically significant( P > 0.05 ) ; During the treatment,28 patients of the treatment group occurred acne-like rash,after symptomatic treatment and nutritional support therapy was initiated.ConclusionThe cetuximab combined with intensity modulated radiation therapy in treatment of local regionally advanced nasopharyngeal carcinoma had better efficacy and lower toxicity,the therapy method was worthy to be popularized.
4.The effect of MOTOmed movement therapy on balance and ability in the activities of daily living in patients with hemiplegia after stroke
Chong CHEN ; Xiaoping GAO ; Xiaojun FENG
Chinese Journal of Physical Medicine and Rehabilitation 2010;32(7):510-512
Objective To investigate the effect of MOTOmed movement therapy on balance and ability in the activities of daily living (ADL) of convalescing stroke patients with hemiplegia. Methods Forty convalescent stroke patients exhibiting hemiplegia were randomly divided into a treatment group and a control group with 20 cases in each group. The control group received routine rehabilitation training; the treatment group received MOTOmed training in addition. Balance function of all the patients was assessed using Berg's balance scale (BBS) , and the Barthel Index ( BI) was used to assess ADL ability at the beginning of the program and after 6 weeks of treatment. Results Balance and ADL ability improved significantly in both groups after 6 weeks of treatment. The effect in the treatment group was significantly better than in the control group. Balance and ADL ability were positively correlated. Conclusions Applying MOTOmed therapy along with routine rehabilitation training can distinctly improve balance and the ADL ability of hemiplegics after stroke.
5.Updates of application of decellularized liver bioscaffold
Xudong WEN ; Xiaojun WANG ; Feng XIA
Chinese Journal of Digestive Surgery 2015;14(1):85-89
Replacement therapy is the most effective method for the treatment of end-stage liver disease,and decellularized liver bioscaffold broadens the research field of the replacement therapy.The present liver bioscaffold preparation is to perfuse chemical reagents (detergents,enzymes,et al) into the vascular structure of the liver under certain physical conditions,so as to remove cellular components and retain extracellular matrix and microvascular structure.Cells were reseeded into the decellularized liver scaffold to obtain the recellularized liver,which can be cultured and evaluated in vitro or in vivo by observing the adhesion of seeded cells,detecting the synthesis and secretion of the recellularized liver.Currently,the selection of seed cells,recellularization protocol and recellularized liver transplantation are still under exploration.In this review,the preparation,evaluation,detection and application of the decellularized liver bioscaffold are introduced for the further experimental study and clinical research.
6.Diffuse-type giant cell tumor of the bone and joint:clinicopathological analyses of 42 cases
Feng YAO ; Zhenfeng LU ; Xiaojun ZHOU ; Honglin YIN
Chinese Journal of Clinical and Experimental Pathology 2015;(4):422-425
Purpose To investigate the clinicopathological changes of the diffuse-type giant cell tumor of the bone and joint. Methods 42 cases of the diffuse-type giant cell tumor of the bone and joint were studied and the follow-up data were reviewed. Results The male patients were 19 and the female were 23, with the male to female ratio of 1 ∶ 1. 2. The age of the patients was 8~69 years (the average age was 37. 6). It was displayed that the patients presented local pain and swelling (34 cases), including dysfunction (18 ca-ses) of the bone and joint. Clinically, the lesions located on the knee joint ( 71. 4%) in 30 cases, the hip and ankle in 9 cases (21. 4%), and the wrist elbow in 3 cases (7. 1%). 27 cases were examined by MRI. Among them, the diffuse-type giant cell tumor was diagnosed in 9 cases (33. 3%). The effusive lesions of the joint presented in 5 cases, the non-specific synovial lesions and others in 3 cases. The obviously diffuse hyperplasia of synovial cells with nodular growth pattern was found. However, a high proliferative in-dex of the tumor cells and the rich-cell tumor were found. But there was no tumor necrosis. Histopathologically, the tumor cells of dif-fuse-type giant cell tumor contained marked brown pigments, multinucleated giant cells formation and a lot of lymphocytes proliferation or follicular reaction in 17 cases (40. 5%) with invasive growth and involvement of the joint and surrounding tissue. 6 cases recurred (20%) , including 2 cases with 2 times. Conclusions The diffuse type-giant cell tumors most commonly involve the knee, followed by the hip and ankle. Preoperative examination of MRI can be help for the diagnosis of the tumor. Histopathologically, diffuse-type gi-ant cell tumor with synovial cells rich-hyperplasia and the villous structures formation more likely recur. The main biological character-istics of diffuse-type giant cell tumor are invasive growth pattern, usually into the soft tissue around the joints.
7.Study on Self-Assembling Peptide In-Situ Gel as Potential Protein Carrier
Fushan TANG ; Feng LI ; Jing WANG ; Xiaojun ZHAO
China Pharmacy 2001;0(07):-
OBJECTIVE: To investigate the feasibility of introducing self-assembling peptides as protein drug carrier.METHODS: By using RAD16-Ⅰ as a model of self-assembling peptides,lysozyme as the model of protein drug,the property of self-assembling peptide solution containing protein to form hydrogel in-situ were characterized by rheology,and the property of protein release in vitro from self-assembling peptide in-situ hydrogel was studied.RESULTS: The self-assembling peptide RAD16-Ⅰ can form hydrogel with certain mechanical intensity rapidly after its solution contained protein being mixed with PBS.Proteins can release easily from RAD16-Ⅰ hydrogel in a sustained-release manner to some extent.About 80% of proteins can be released from the hydrogel within 8 hours and the cumulative protein release from 1.5% hydrogel was less than 90%.The bio-activity of lysozyme released from RAD16-Ⅰ hydrogel was well preserved as 98% to 115%.CONCLUSION: Self-assembling peptide can be employed as potential in-situ hydrogel carrier for protein drugs.
8.The Value of 64-slice Spiral CT Perfusion Imaging in Solitary Pulmonary Nodule
Xiaojun ZHANG ; Huaiqi ZHOU ; Gang WANG ; Jigang GUO ; Feng XU
Journal of Practical Radiology 2001;0(06):-
0.05).Conclusion MSCT perfusion imaging is of significant value in diagnosing and differentiating malignant SPN from benign SPN.
9.STUDY ON THE ANTI-ANGIOGENIC ROLE OF AGARO-OLIGOSACCHARIDE
Haimin CHEN ; Xiaojun YAN ; Feng WANG ; Jing LIN ; Weifen XU
Acta Nutrimenta Sinica 1956;0(04):-
Objective: To study the inhibition effect of agaro-oligosaccharide (AOS) on neovascularization and its mechamism. Method: The anti-angiogenic effect in vivo was evaluated on chicken chorioallantoic membrane (CAM) model. Cytotoxic activity of AOS was demonstrated by inhibition of several human cell lines by MTT assay. The apoptosis of HUVECs induced by AOS was examined by Hoechst staining assay and quantified by flowcytometry. Results: In CAM, AOS caused dose-dependent decrease on the vascular density and adversely affected capillary plexus formation. Different cytotoxic sensitivities were observed for AOS towards several kinds of cell lines, and HUVECs were more sensitive. Moreover, the growth inhibitory activity was correlated with induction of apoptosis. Flowcytometric analysis also revealed that AOS arrested the cell cycle progression at S phase. Conclusion: Agaro-oligosaccharide possesses the anti-angiogenic effects, which are associated with apoptosis induction of endothelial cells.
10.Astaxanthin inhibits sodium azide-induced cytotoxicity in hepatocyte L-02 cells probably by H+ transferring function.
Jian MA ; Haimin CHEN ; Xiaojun YAN ; Feng WANG ; Weifeng XU
Acta Pharmaceutica Sinica 2011;46(5):521-6
This study is to investigate the protective effect of astaxanthin against injured hepatocyte L-02 cells induced by sodium azide (NaN3) and reveal the possible mechanisms. Hepatocyte L-02 cells were exposed to 100 mmol.L-1 NaN3 with various concentrations of astaxanthin pre-incubated, then the cell viability was measured by MTT method; The level of reactive oxygen species (ROS) was determined by DCFH-DA method; The changes of mitochondrial membrane potential (MMP) and apoptosis ratio were detected by JC-1 method and Annexin V-FITC/PI double stain method, respectively. Results showed that after cells were exposed to 100 mmol.L-1 NaN3 for 3 hours, the cell viability significantly decreased; ROS level and the percentage of late phase apoptosis increased obviously; MMP was also declined. When cells were pretreated with astaxanthin, the cell damage and late phase apoptosis ratio reduced and MMP was maintained. However, the level of ROS showed insignificant decrease (P>0.05). The beneficial concentration of astaxanthin in improving cell viability and MMP was not in a dose dependent manner and the most effective of which was 0.10 nmol.L-1 (P<0.01). In order to reveal its possible non-antioxidant mechanism, mitochondrial membrane was imitated and H+ transferring function of astaxanthin was also detected by bilayer lipid membrane (BLM) method. Results showed that 2.0% astaxanthin could transfer H+ efficiently. These suggested the mechanisms of astaxanthin in protection of hepatocyte L-02 cells not via its ROS quenching capability but via its H+ transferring function, which improved the mitochondrial function and had the sequence biology effects.