1.Research progress of Chinese Medicine for activating blood and resolving stasis during the regulation of apoptosis gene in spinal cord
Journal of Medical Postgraduates 2014;(7):740-742
Spinal cord injury is a common clinical disease .Cell apoptosis is one of important pathogeneses for spinal cord in-jury, and apoptotic gene plays a very important role in apoptosis on spinal cord injury .Chinese medicine for blood-activating and stasis-dissolving has a good therapeutic effect for spinal cord injury by reducing inflammation , inhibiting apoptosis and improving microcircu-lation.In this paper, we review the research of chinese medicine for activating blood and resolving stasis during the regulation of apoto -sis gene in spinal cord injury based on related documents in the recent five years .
2.Application of Responsibility Index in Medical Students′Professionalism Evaluation
Chinese Medical Ethics 2015;(4):487-490
For the cultivation of medical students medical professionalism and evaluation has become a hot is-sue in the medical colleges medical education at home and abroad, but for junior medical students′professional spirit evaluation research is less.This paper introduces the basic concept of responsibility index and application by introducing foreign medical schools responsibility index for evaluation in school doctor students physician profession-alism, analysis the advantages and disadvantages of the method.Think the responsibility index is based on the spe-cific behavior evaluation, the result is more accurate, is suitable for junior medical students′professional spirit e-valuation system, compared with other evaluation system, responsibility index, pay more attention to guidance and specification in advance.But responsibility index also has some disadvantages.Such as responsibility index evalua-tion process must face some ethical challenges, lack of integrity and evaluation framework design.
3.Characteristics of prospective memory impairment in patients with Parkinson's disease at early and middle stage
Kai LI ; Haibo CHEN ; Kai WANG ; Shuhua LI ; Xinde WANG
Chinese Journal of Neurology 2009;42(2):79-82
Objective To explore the characteristics of prospective memory impairments in patients with Parkinson's disease (PD) at the early and middle stage. Methods Fifteen PD patients at the early and middle stage and 15 normal controls matched with age, sex, education and occupation were asked to complete event-based prospective memory (EBPM) and time-based prospective memory (TBPM) tasks. Results In the EBPM task (points), there was a significant difference between PD patients (3.93±2.69) and normal controls (6.00±2.17, t =-2.318,P <0.05). In the TBPM task(points), there was no significant difference between PD patients (3.47±1.96) and normal controls (3.80±1.70, t= -0.498, P >0.05). Conclusion The EBPM is impaired and the TBPM is relatively spared in early and middle stage PD patients.
4.Formulation Optimization of Indomethacin-loading Solid Lipid Nanoparticles by Box-Behnken Response Surface Methodology
Kai CHEN ; Shou LI ; Kai JIN ; Jing ZHAO ; Jifu HAO
China Pharmacy 2016;27(22):3118-3121
OBJECTIVE:To optimize the formulation of indomethacin-loading solid lipid nanoparticle(SLN). METHODS:Us-ing indomethacin as model drug,glyceryl behenate as oil phase,poloxamer 188 and polyethylene glycol-12-hydroxystearic acid as emulsifier,with turbidity,entrapment efficiency and drug loading amount as index,Box-Behnken response surface methodology was used to optimize the amount of oil phase,emulsifier-oil phase ratio,drug-oil phase ratio. The physicochemical properties of SLNs were characterized by SEM and DSC. RESULTS:The optimal formulation was as follows as oil phase of 0.91%,emulsifier-oil ratio of 1∶1,drug-oil phase ratio of 1∶5. The turbidity,entrapment efficiency and drug loading amount of prepared nanoparticle were 1 025-1 030 NTU,98.94%-99.08%,2.43%-2.46%,respectively;particle size and polydispersity index(PDI)were 181.5-182.3 nm and 0.340-0.341(n=3). The results of DSC showed that indomethacin was not present in crystalline state dispersed into SLNs. CONCLUSIONS:The optimal formulation is screened successfully,and indomethacin-loaded SLNs have been prepared.
5.A case of neurofibroma of vocal fold.
Kai CHEN ; Huang LIN ; Xue-fen LI
Chinese Journal of Otorhinolaryngology Head and Neck Surgery 2011;46(5):428-429
Adult
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Humans
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Laryngeal Neoplasms
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Male
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Neurofibroma
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Vocal Cords
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pathology
6.Determination of Entrapment Efficiency of Loratadine Binary Ethosomes by Sephadex Microcolumn Com-bined with HPLC
China Pharmacist 2015;(2):244-246
Objective:To establish a method to determine the entrapment efficiency of loratadine binary ethosomes. Methods:The gel microcolumn centrifugation method was employed to separate the free drug from loratadine binary ethosomes. The content of lorata-dine was determined by HPLC to calculate the entrapment efficiency. Results: A calibration linear curve of loratadine concentration was within the range of 10. 2-102. 0 μg·ml-1(r=0. 999 5). The average entrapment efficiencies of three batches of loratadine binary ethosomes were 86. 75%, 87. 26% and 86. 00%, respectively. Conclusion:The method is simple and rapid, and can be used to de-termine the entrapment efficiency of loratadine binary ethosomes accurately.
7.Analysis of Therapeutic Efficacy of Combination ofChemotherapy with OsteoblastPromoting and Anti-Osteolysis Agents on Bone Metastatic Carcinoma
Kai LI ; Yan LIANG ; Peng CHEN
Tianjin Medical Journal 2001;29(3):154-156
Objective: To estimate the clinical efficacy of combination of chemotherapy with osteoblast promoting and anti-osteolys-is agents in bone metastatic carcinoma. Methods: Seventy-one patients with bone metastatic carcinoma were divided into 2groups and treated with protocol A or B, respectively. The protocol A was a combination of chemotherapy with osteoblastpromoting and anti-osteolysis agents, the protocol B was a combination of chemotherapy with antiosteolysis agent only. Theefficacies of the 2 protocols were compared and studied. Results:The effect of A was more remarkable than that of B in re-lieving bone pain and enhancing bone repair. No severe adverse effect of these agents was found in therapy. Conclusion: Theclinical efficacy of combination of chemotherapy with osteoblast promoting and anti-osteolysis agents in bone metastatic car-cinoma was definite, the osteoblast promoting agent as an effective adjtmctive agent can be used not only in osteoprosis butalso in bone metastatic carcinoma.
8.Medical professionalism curriculum reform facing medical professionalism
Kai CHEN ; Ruifeng LI ; Mu ZHAO
Chinese Journal of Medical Education Research 2015;(12):1210-1214
The Medical College of Panzhihua University has developed a series of curriculum reform based on Medical Professionalism, investigating the basic idea, curriculum design and assess-ment system of Medical Professionalism curriculum reform, emphasizing the combination of medical professionalism curriculum with clinical courses, in the hope of providing a unified and acknowledged medical professionalism curriculum.
9.Cryopreservation of bone marrow mesenchymal stem cells from Sprague-Dawley rats at-80℃
Kai CHEN ; Xinran LI ; Yan XUAN
Chinese Journal of Tissue Engineering Research 2016;20(10):1433-1438
BACKGROUND:We attempt to explore a low-cost, simple and effective way to cryopreserve bone marrow mesenchymal stem cels at-80℃.
OBJECTIVE:To screen the optimal cryopreservation fluid for bone marrow mesenchymal stem cels and to verify the biological features of bone marrow mesenchymal stem cels after long-term cryopreservation.
METHODS: Bone marrow mesenchymal stem cels were cultured using adherent method and the biological features and purity of cels were detected using immunofluorescence method. Bone marrow mesenchymal stem cels were cryopreserved in the cryoprotectant medium containing low-sugar DMEM, fetal bovine serum and dimethyl sulfoxide at different proportions at-80℃ for a short term. Then, the optimal cryoprotectant was selected to storage the bone marrow mesenchymal stem cels. After 1, 3, 6 months of cryopreservation, the cels were resuscitated, cultured and passaged. Passage cels were identified immunofluorescence method to determine the biological features of bone marrow mesenchymal stem cels cryopreserved at-80℃.
RESULTS AND CONCLUSION:Cryoprotectant medium of 80% DMEM+10% fetal bovine serum+10% dimethyl sulfoxide was suitable for cryopreserving MSCs at -80℃, and resuscitated cels were able to proliferate in vitro, and passage normaly, indicating the cryopreserved bone marrow mesenchymal stem cels stil maintain the original biological activity.
10.Diagnosis and Surgical Operation of the Lateral Patellar Compression Syndrome
Min LI ; Kai LU ; Junbo CHEN
Journal of Medical Research 2006;0(05):-
Objective To explore the diagnosis and therapies of the lateral patellar compression syndrome.Methods This group included 21 cases(30 knees) of lateral patellar compression syndrome,with the average 45 years old(2 males and 19 females of 36~58 years old).All of the patients had obvious Clinical sings and symptoms,whose auxiliary examination was negative.It was almost as same as the Merchant classificasion of the lateral patellar compression syndrome.We adopt the lateral retinaculum release and debridement cartilage defects and drilling.Results All of the definitely diagnosised patients were reviewed with an average of 4 years follow-up visiting(range from 0.5 to 15 years) after operation.The rate of fineness is 96.7% in accordance with Ye Qibin's synthesis estimation for the ailing knee.Conclusion The lateral patellar compression syndrome is a common disease.The lateral retinaculum release and debridement cartilage defects and drilling is a good therapy with minor injury and significant effects for the severe or recurrent attacking lateral patellar compression syndrome.