1.Analyzing Financial Security Situation of Disease Prevention and Control System Construction in Jiangxi
Xiaoqing LIU ; Hui YUAN ; Xin FENG
Chinese Health Economics 2013;(12):18-20
Objective: To understand current situation and existing problems in financial security of the center for disease control and prevention system in Jiangxi, to provide scientific references for advancing continuous, fast and healthy development of the system. Methods: combining three methods of questionnaire, group discussions and field surveys to investigate the situation of financial income from 112 centers of disease control and prevention in Jiangxi. Results: The government finance investment increased by year, but the funds of daily work and personnel is insufficient, public and regular business funds of some institution still depend on paid service income. Conclusion: It needs to further enhance financial structure adjustment and disease control investment, increase disease control input, change government appropriation method for disease prevention and control institutions, change the government ’ s funding mode to “purchase system” , reasonably pricing public product, the government on behalf of the people buying services according to quality and quantity from the disease prevention and control institutions.
2.The Relationship Between KRAS Status and Response of Cetuximab in Combination with Oxaliplatin,Leucovorin and Fluorouracil/Xeloda in the First Line Treatment of Advanced Colorectal Cancer
Yuan TIAN ; Jiwei LIU ; Xin CAI
Journal of Medical Research 2006;0(03):-
Objective This study assessed whether the best overall response rate(ORR) of cetuximab combined with oxaliplatin,leucovorin and fluorouracil/Xeloda was superior to that of this method alone as first-line treatment for metastatic colorectal cancer.The influence of KRAS mutation status was investigated.Methods Patients received cetuximab(400mg/m2 initial dose followed by 250mg/m2,wk thereafter)less than 2 times plus chemotherapy(oxaliplatin 130mg/m2 on day 1,plus leucovorin 200mg/m2 and fluorouracil as a 400mg/m2 bolus followed by a 600mg/m2 infusion during 22 hours on days 1 and 2) or chemotherapy alone.Treatment was continued until disease progression or unacceptable toxicity.KRAS mutation status was assessed in the subset of patients with assessable tumor samples.Results The confirmed ORR for cetuximab plus oxaliplatin,leucovorin and fluorouracil/Xeloda was higher than that with alone(42.86% vs 21.74%).A statistically significant increase in the odds for a response with the addition of cetuximab to oxaliplatin,leucovorin and fluorouracil/Xeloda could be established.In patients with KRAS wild-type tumors,the addition of cetuximab to oxaliplatin,leucovorin and fluorouracil/Xeloda was associated with a clinically significant increased chance of response(ORR 54.55% vs 21.74%) and a lower risk as compared with chemothrapy alone.Cetuximab plus oxaliplatin,leucovorin and fluorouracil/Xeloda was generally well tolerated.Conclusion The clinical effcacy of chemothrapy(oxaliplatin,leucovorin and fluorouracil/Xeloda) plus cetuximab is better than only chemothrapy.KRAS mutational status was shown to be a highly predictive selection criterion in the treatment decision regarding the addition of cetuximab to oxaliplatin,leucovorin and fluorouracil/Xeloda for previously untreated patients with metastatic colorectal cancer.
3. Immunological Effects of Total Flavones from Leaves of Choerospondias axillaris on Mice
Chinese Herbal Medicines 2014;5(2):121-124
Objective: To investigate the effect of total flavones from the leaves of Choerospondias axillaris (TFLCA) on the immune function of normal mice and to provide the experimental basis for the reasonable application of C. axillaris. Methods: The carbon clearance method, cutaneous delayed hypersensitivity reaction method, serum hemolysin method, and index of immune organs were used to study the effect of TFLCA on the immune function of mice. Results: TFLCA could enhance the phagocytic function of mononuclear macrophage and the cutaneous delayed hypersensitivity reaction of mice, and increase the content of hemolysin antibody and the thymus index in mice. Conclusion: TFLCA could improve the celiac macrophage activity and specific immunity of mice, and TFLCA, consisting with the total flavones of Choerospondiatis Fructus (TFCF), has the effect on the immune function of mice. So both TFLCA and TFCF have the regulatory effects on the immune function of mice. © 2013 Tianjin Press of Chinese Herbal Medicines.
4. Chemical Constituents from Citrus aurantium L.
Chinese Pharmaceutical Journal 2018;53(19):1627-1631
OBJECTIVE: To study the chemical constituents of Citrus aurantium L. METHODS: Chromatographic techniques were employed for isolation and purification of the constituents and their structures were determined by spectral analysis and chemical evidence. RESULTS: Sixteen compounds were obtained and identified as pyrrolezanthine-6-methyl ether (1), methyl 3-hydroxy-4-methoxybenzoate (2), 3-hydroxy-4-methoxybenzoic acid (3), methyl 3,4-dihydroxybenzoate (4), methyl 3-(4-acetoxyphenyl)propanoate (5), 4-hydroxybenzoic acid (6), scopoletin (7), 5-(hydroxymethyl)furan-2-carbaldehyde (8), hesperidin (9), naringin (10), gossypetin-8,3'-dimethylether-3-O-β-D-galactoside (11), 2-homoeriodictyol-7-O-β-D-glucopyranoside (12), 6-demethoxytangeretin (13), naringenin (14), 5,6,7,8,4'-pentamethoxyflavone (tangeretin) (15), and 5-O-desmethylnobiletin (16). CONCLUSION: Compounds 124811-13 are for the first time obtained from Citrus.
5.Relationship between vitamin D and the incidence and prevention of type 1 diabetes mellitus
Xin GUAN ; Xuewen YUAN ; Qianqi LIU
International Journal of Pediatrics 2021;48(5):314-317
Type 1 diabetes mellitus(T1DM)is a chronic, immune-mediated disease characterised by the destruction of insulin-producing cells.The specific pathogenesis of T1DM has not been clarified.It is mainly believed that the occurrence of T1DM is caused by the joint action of genetic and environmental factors.The occurrence, development, treatment and prevention of T1DM are urgent problems to be solved.A number of studies have found that vitamin D is involved in the pathological process of many autoimmune diseases and is related to cell proliferation, differentiation, apoptosis and other mechanisms.Vitamin D may play a key role in the pathological mechanism of T1DM.Here we review the relationship between the incidence, prevention and treatment of T1DM and vitamin D.
6.Rabbit model of aspergillus keratitis induced by modified corneal surface lens method
Ting, LIU ; Yuan-yuan, XU ; Hao, CHEN ; Li-xin, XIE
Chinese Journal of Experimental Ophthalmology 2011;29(2):101-106
Background Animal model of fungal keratitis is an available tool to the experimental study of the pathogenesis mechanism of fungal keratitis. Current modeling methods of fungal keratitis include corneal scratching, corneal stroma injection and corneal surface lens methods. But these methods still have their own shortages. Objective This experiment was to create a fungal keratitis animal model by modifying corneal surface lens method. Methods Modified animal models of fungal keratitis were created by modified corneal surface lens method in 12 general adult New Zealand white rabbits. The filter papers soaked 108 spores / ml or A106spores / ml of spergillus fumigatus suspension were attached on the de-epithelial cornea surface and fixed with contact lens and tarsorrhaphy for 2 days, and the filter paper with physiological saline was used as control group. The symptoms of anterior segment were examined under the slit lamp in 3 ,7 and 14 days after surgery and scored based on the criteria of Dong. Corneal scraping was stained with 10% potassium hydroxide and calcofluor white stain to observed mycelium under the fluorescence microscope. Corneal tissue sections were examined by hematoxylin-eosin staining and periodic acid Schiff staining under the light microscope. The use of animal followed the Standard of Association for Research in Vision and Ophthalmology. Results Fungal keratitis models were successfully established in 6 eyes and 4 eyes in 108 spores/ml group (6/6) and 106 spores/ml group respectively. The symptom was more severer and score was higher in the eyes of 108 spores/ml group than that in 106 spores/ml group. At 3 and 7 days after surgery,the symptom scores of fungal keratitis models were higher than those of control group from 3 through 7 days with the statistically significant difference (P<0. 01) and the symptom scores of 108 spores/ml group were significantly higher than those of 106 spores/ml group (P<0. 01). At 14 days after surgery, the symptom scores of 108 spores/ml group were still higher than those of control group (P<0. 05). Fungal hyphae was seen in the corneal scrapes in 108 spores/ml group and 106 spores/ml group respectively from 3 through 7 days after surgery. Inflammatory cell infiltration, stroma cells necrosis and fungal hyphae were presented in 108 spores/ml group, and the corneal neovascularization could be observed in 108 spores / ml group 14 days later. Fungal culture revealed the positive outcome in both 3 and 7 days after surgery in 108 spores/ml group,but in 106 spores/ml group,the positive result was only in the 3rd day. Conclusion Modified corneal surface lens method is more feasible and sample in the model of Aspergillus keratitis. This animal model of Aspergillus keratitis is practical for the further study of fungal keratitis.
8.Effect of ULF gene silence on etoposide induced H1299 cell apoptosis
Wei LIU ; Xin XU ; Xiaoci CAO ; Fei YUAN ; Huiying FANG
Chinese Journal of Biochemical Pharmaceutics 2014;37(4):59-62
Objective To explore the effects of knocking down ULF gene on the apoptosis of non-small-cell carcinoma H1299 cell after treatment with etoposide.Methods Three ULF small interfering RNA(siRNA)sequences and one negative control siRNA sequence were designed and synthesized, and then individually transfected into H1299 cell via lentivirus.The interference efficiency of ULF-siRNA were screened by real-time PCR and Western blotting.Then the most target siRNA was used for apoptosis assay after treatment with etoposide,MTT assay for H1299 cell proliferation,flow cytometry for cell cycle distribution. Results The expression of ULF gene and its protein ULF were down-regulated in H1299 cell when transfected with ULF-siRNA,and ULF-siRNA-1 was the most effective one,which had the highest inhibition rate(80%)of ULF expression.Compared with negative control group,ULF-siRNA group showed an obvious apoptosis after treatment with etoposide,and the inhibition rate of was higher than control group,which was positively correlated with etoposide dose,the difference was statistically significant(P<0.05 ).Flow cytometry showed that compared with the control group,G0/G1 cell cycle in ULF-siRNA group was increased,and S phase cells was decreased,the differences were all statistically significant(P<0.05).Conclusion Down-regulation ULF protein expression through treatment with etoposide can induce apoptosis of non-small-cell carcinoma H1299 cells,and inhibit cell proliferation,which lead to cell cycle arrest.ULF gene may become the new target of gene therapy for cancer.
9.Anatomical measurement of the posterior structure of lumbar spine and design of the lumber laminar screw dynamic system
Jiandong YUAN ; Yungang WU ; Cailong LIU ; Xin CHEN
Chinese Journal of Primary Medicine and Pharmacy 2013;20(2):182-184
Objective To determine the lumbar anatomical structure parameters of the lumbar spine posterior column and its sample data of three-dimensional conformation,and based on these data to design the lumber laminar screw dynamic fixation system.Methods 20 human L3 ~ S1 bone specimens,the thickness of the lumber laminar region were measured to obtain the normal anatomical parameters of the lumbar laminar.And 20 healthy lumbar vertebrae L3-S1 for three-dimensional reconstruction were detected by CT scan,which could obtain the structure data of the normal lumbar posterior three-dimensional conformation,and to obtain conformational sample data of three-dimensional space of the posterior structure.Results Lumbar lamina medial 1/3 could serve as a spine laminar screw setting area by anatomical observations and measurements.Lamina thickness of L3-4 on average (6.6 ±0.9) mm,L5 ~ S1average (6.0 ± 0.6) mm.Lumber laminar screw length 6.5 ~ 8.0mm could meet the requirements of bilateral cortical fixation.Conclusion Lower lumbar spinal lamina area can serve as the region to fix the bilateral cortical bone screw,and the optimal length of the laminar screw is 6.5 ~ 8.0rmm.
10.Clinical characteristics and medical imaging analysis of 20 cases with calcium pyrophosphate deposition
Xin DONG ; Yuan LIU ; Li WANG ; Yi ZHENG
Chinese Journal of Rheumatology 2017;21(3):181-184,封3
Objective To investigate the clinical and imaging features of patients with calcium pyrophosphate deposition (CPPD).Methods The clinical data and X-rays material of knee joint of 20 patients with CPPD were retrospectively analyzed.Pearson/Spearman's correlations analysis was used for statistical analysis with software version 15.0.Results The 20 patients with CPPD had demonstrated that the typical accumulation of calcium,which accounted for about 1.5%o(20/13 536) among patients over 55 years old who had knees X-ray at the same period in Chaoyang Hospital.Female patients of CPPD was 80% (16/20).Seventeen patients completed follow-up visits.The age of onset for CPPD ranged from 44 to 85 years old,the percentage of CPPD patients over 70 years old was 71%(12/17).Among the 17 cases of followed,14 cases (82%) were patients with paroxysmal arthritis with the initial site of knee joint (79%) and ankle joint (21%).Most patients suffered from moderate to severe pain,while some might have local congestion and increased skin temperature.Five patients had more than two different joints attacked by arthritis.The distribution of the affected areas was knee,ankle,hip,elbow,wrist and metacarpophalangeal joints.The median number of attack was 1.5 times a year,and the median duration of attack was 8.5 days.Among the 14 patients,Six cases of them had no recurrence after treatment,but six cases had recurrent attacks within a year.The imaging of lateral articular facet showed that calcium deposit was extended and thickness of calcification was increased.Plus osteophyte formation stage was 100% with an average of 3.0±1.6 and 85% sclerosis of articular facet.The rate of attacks of arthritis had a positive correlation with calcium deposition range of lateral articular facet (r=0.663,P=0.010) and a negative correlation with sclerosis of articular facet (r=-0.548,P=0.042).Conclusion Old patients with paroxysmal joint pain,patients with knee joint or other big joints as the initial joints involved,patients with long duration disease,patients who had more than two joints at attack and patients with calcium deposition in imaging,should be suspected for CPPD clinically.Moreover,patients with a wide range of calcium deposition are high likely to suffer from recurrent arthritis attack.