2.Protection of calcitonin on articular cartilage of rabbit knee joint with osteoarthritis in vivo and in vitro
Nan ZHANG ; Liu ZHANG ; Huan ZHENG
Orthopedic Journal of China 2006;0(01):-
Objeetive To access whether calcitonin exerts a chondroprotective action in unstable knees which induce experiment anterior cruciate ligament transaction(ACLT)on the right knee and were divided randomly into two groups-ACLT group and ACLT+CT group.ACLT+CT group began to receive a daily subcutaneous injection of salmon calcitonin at a does of 5 IU per kg of body weight for 6 weeks;in contrast,ACLT group received NS at the same does.All rabbits were killed on day 49 postoperation cartilage sections were stained with safranin-O-fast green,HE and immunostained MMP-3 antibodies.Chondrocytes expressions of MMP-3 and aggrecan were further examined by Realtime RT-PCR. Result The score,the grey value of Safranin-O-fast green of ACLT+CT group were higher than ACLT group(P
3.Effects of interleukin-17A on colonization and infection of respiratory tract bacteria
Kai ZHENG ; Nan ZHANG ; Qiushui HE
Chinese Journal of Microbiology and Immunology 2016;36(8):623-628
Interleukin-17A (IL-17A) is one of the proinflammatory cytokines produced by a subset of CD4+T cells named Th17 cells. It plays a crucial role in both host innate and adaptive immune responses against colonization and infection of respiratory tract bacteria. Studies in animal models have demonstrated that IL-17A can induce the expressions of various chemokines, inflammatory factors and adhesion molecules via multiple intracellular signaling pathways and recruit neutrophils to infection sites. Moreover, recent stud-ies have shown that single nucleotide polymorphisms (SNPs) of IL-17A coding gene can regulate the produc-tion of IL-17A in serum, resulting in individual difference in colonization rate by Streptococcus pneumoniae. This review presents recent data related to the structure, functions and signaling pathways of IL-17A, sum-marizes its roles in host defense based on studies in animal models and discusses the effects of genetic varia-tion of IL-17A on colonization, susceptibility, clinical characteristics and disease prognosis of human respira-tory tract bacteria.
4.Determination of Entrapment Efficiency of Levodopa-loaded PEGylated-Solid Lipid Nanoparticles by Mini-Column Centrifugation-HPLC
Man WEI ; Yujia ZHANG ; Yuyuan CHEN ; Nan ZHANG ; Wensheng ZHENG
Herald of Medicine 2017;36(7):797-800
Objective To establish a mini-column centrifugation-HPLC method to determine the entrapment efficiency of levodopa-loaded PEGylated-solid lipid nanoparticles.Methods A dextran gel(Sephadex G-50) mini-column centrifugation was employed to separate the free drug from solid lipid nanoparticles.The content of levodopa was qualified by HPLC.Results Under the applied chromatographic condition,the excipients had no influence on the determination of levodopa.A calibrated linear of levodopa concentration was within 10.54-527.00 μg·mL-1.The recoveries of high,medium and low concentrations of levodopa were 99.13%,99.51% and 99.04%(RSD were 1.25%,1.91% and 1.71%), respectively.The free levodopa was well separated from solid lipid nanoparticles by using mini-column centrifugation.The addition of blank solid lipid nanoparticles recovery was 98.84% with RSD of 0.80%(n=3).The average adsorption rates of the three concentrations of free levodopa were 100.00%,98.75% and 98.56%(RSD were 0.00%,0.19% and 0.18%,n=3),respectively.The adsorption rate of the physical mixtures of three different concentrations of drugs and empty PEGylated solid lipid nanoparticles were 99.68%,98.46% and 99.21%(RSD were 1.52%,0.23% and 0.21%),respectively.Conclusion The method was simple,accurate and reproducible,which can be used for determination of the entrapment efficiency of levodopa-loaded PEGylated-solid lipid nanoparticles.
5.Analysis of blood infection markers of voluntary blood donors in Bengbu area of Anhui
Jun ZHANG ; Zheng GUAN ; Nan WANG ; Jiahong YU
Chinese Journal of Primary Medicine and Pharmacy 2011;18(20):2772-2773
ObjectiveTo study infection status of voluntary blood donors and epidemic trends of related infectious diseases in Bengbu area.MethodsBlood infection markers(ALT, HBsAg,Anti-HCV,TP and Anti-HIV) of 130 118 voluntary blood donors were detected.Voluntary blood donors were divided into college students group,reservation group and street group.Then, the positive rates of blood infection markers of three groups were compared.ResultsAccounting for 4.41% ,5 748 voluntary donors of 130 118 volunteers were unqualified.The positive infection rates of students group, reservation group and street group were 2.42%, 4.08% and 4.85%.The statistical differences of ALT and anti-HCV among these groups were significant (x2 = 35.07,12.31,12.45,116.49, all P <0.01),and no statistical significance was found in ALT difference among these groups(x2 = 3.82,0.59, all P >0.05).ConclusionThe infection rates of these blood donation related diseases of voluntary donors in bengbu aera showed increasing tendency, and that of college students in bengbu area was relatively lower.
6.Clinical study of capecitabine or S-1 as maintenance treatment to patients with advanced gastric cancer
Liping ZHENG ; Nan ZHANG ; Ying PAN ; Cuiwei LIANG ; Wuxing GONG
The Journal of Practical Medicine 2017;33(16):2757-2760
Objective To evaluate the efficacy and adverse effect caused by capecitabine compared with S-1 as maintenance treatment of patients with advanced gastric cancer (AGC). Methods A total of 123 AGC patients who did not suffer disease progression after first-line chemotherapy were randomized into three groups. The capecitabine group(Cap)received maintenance chemotherapy with capecitabine(1000 mg/m2 twice daily for 14 days,21 days/cycle),and the S-1 group(S1)received S-1(40,50,or 60 mg according to the body surface area and orally administered twice a day for 14 days ,21 days/cycle). The observation group was given the support-ive treatment. Patients kept this chemotherapy regimens until disease progressed or with intolerant toxicity. Re-sults The disease control rate was 70.7%in the Cap group and 80.5%in the S1 group(P=0.304). The median time of progression was 8.3 months in the Cap group and 8.5 months in the S1 group(P = 0.448). Maintenance chemotherapy groups showed better responses in the treatment group than the observation group ,which demonstrat-ed a median progression of 6.7 months(P<0.001). The median overall survival time was 15.3 months in the Cap group and 15.7 months in the S1 group(P = 0.637). Maintenance chemotherapy groups showed better responses than the observation group ,which demonstrated a median survival of 12.8 months (P < 0.05). The main side effects included hyperpigmentation,bone marrow suppression,nausea and vomiting and hand-foot syndrome. No death occurred in relation to the therapy. Conclusion The effectiveness of capecitabine and S-1 as maintenance chemotherapy in AGC patients after the first-line chemotherapy are similar,and both can prolong the time of overall survival. And the adverse reactions can be tolerated.
7.Anterior cruciate ligament injuries in knee joint: consistency analysis on 1.5T MRI versus arthroscope
Nan ZHANG ; Xuejiang QIAN ; Zhongchong LIU ; Yong ZHENG
Chinese Medical Equipment Journal 2017;38(5):76-78,85
Objective To analyze the consistency between 1.5T MRI and arthroscope when used to diagnose anterior cruciate ligament (ACL) injuries.Methods Totally 162 ACL injury patients underwent MRI examination,and the results by arthroscope were used as the diagnosis standard.The curve of receiver operating characteristic (ROC) was applied to evaluating the ACL injuries diagnosis by MRI,and the consistency was analyzed between 1.5T MRI and arthroscope.Results MRI had the sensitivity,specificity and accuracy being 98.69%,81.82% and 98.77% respectively when used to diagnose ACL injuries,and there was high consistency between MRI and arthroscope (Kappa=0.909,P>0.05).Conclusion MRI gains high sensitivity and specificity when used to diagnose ACL injuries as well as high consistency with arthroscope,and thus can be a preferred non-invasive way to diagnose ACL injuries.
8.Value of three-dimensional SPACE sequence on analysis of sinus tarsi ligament of ankle
Nan ZHANG ; Xuejiang QIAN ; Yong ZHENG ; Zhongchong LIU
Chinese Medical Equipment Journal 2017;38(6):98-100,104
Objective To compare the values of 3D-SPACE sequence and 2D-TSE sequence for displaying the anatomical details of the sinus tarsi ligament of the ankle.Methods 1.5T Siemens Auanto MRI scanner and 8-channel skull phased array coil were used for the examination of 26 healthy volunteers with 3D-SPACE three-dimensional isotropic sectional scanning as well as 2D-T1WI-TSE transverse and 2D-T2WI-TSE coronal sagittal two-dimensional fast spin echo scan.Two senior MRI radiologists evaluated the display rates of the two sequences for the cervical ligament of sinus tarsi and talus ligament so as to determine the values of the two sequences for displaying the cervical ligament of sinus tarsi.Results 3D-SPACE sequence behaved significantly better than 2D sequence when used to display the sinus tarsi ligament (P<0.05),and the display rates were statistically different at different positions (P<0.05).3D-SPACE sequence gained obvious advantages over 2D conventional TSE sequence when used to display the cervical ligament of sinus tarsi and talus ligament,and the highest display rate occurred in case of the cervical ligament of sinus tarsi scanned with 3D-SPACE coronal view and in case of the talus ligament scanned at coronal and sagittal positions.Conclusion 3D-SPACE sequence can display clearly the anatomical details of the sinus tarsi ligament with multiplanar reconstruction,curved planar reformation and etc,and thus is worthy promoting clinically.
9.Observations on the Efficacy of Nazi Method of Midnight-midday Ebb Flow plus Warm Needling Moxibustion in Treating Transient Ischemic Attack
Liqun ZHENG ; Nan YANG ; Zhiqiang ZHANG ; Minghua ZHAO ; Xingchen LIN
Shanghai Journal of Acupuncture and Moxibustion 2015;(7):609-611
Objective To investigate the clinical efficacy of Nazi method of midnight-midday ebb flow plus warm needling moxibustion in treating transient ischemic attack (TIA). Methods Sixty patients with transient ischemic attack were randomly allocated to treatment and control groups, 30 cases each. The control group received routine medication and the treatment group, Nazi method of midnight-midday ebb flow plus warm needling moxibustion in addition. The main clinical symptoms were observed by TCD monitoring of microembolic signals in the two groups before and after treatment. The clinical therapeutic effects were compared between the two groups. Results After treatment, the positive rate of microembolus monitoring was 3.3%in the treatment group and 20.0%in the control group;there was a statistically significant difference between the two groups (P<0.05). There was a statistically significant pre-/post-treatment difference in the traditional Chinese medical syndrome score in the two groups (P<0.05). There was a statistically significant post-treatment difference in the traditional Chinese medical syndrome score between the treatment and control groups (P<0.05). The total efficacy rate was 96.7% in the treatment group and 80.0% in the control group;there was a statistically significant difference between the two groups (P<0.05). At six months after treatment, the rate of disappearance of TIA, the rate of recurrence of TIA and the rate of occurrence of cerebral infarction were 90.0%, 6.7%and 3.3%, respectively, in the treatment group and 60.0%, 20.0%and 20.0%, respectively, in the control group;there were statistically significant differences between the two groups (P<0.05). Conclusions Nazi method of midnight-midday ebb flow plus warm needling moxibustion can decrease the positive rate of microemboli and shorten transient ischemic attack to prevent cerebral infarction in patients with transient ischemic attack.
10.Performing the socialist core values in the cultural inheritance and innovation of traditional Chinese medicine
Gang YUAN ; Nan ZHENG ; Qinming YU ; Rongxing ZHANG ; Hewei LI
International Journal of Traditional Chinese Medicine 2015;(7):580-582
System combing the internal unity of traditional Chinese medicine culture and socialist core values is the demands of both contemporary TCM culture intrinsic appeal and also the practice of socialist core values. Based on exploring the inner link between the core value of traditional Chinese medicine culture and socialist core values, this article discuss the specific path of promoting socialist core values in the process of TCM culture inheritance and innovation.