1.Research on the local immunotherapy with dexamethasone used in healing Graves disease
Xubo WANG ; Meiqi LU ; Longjiao SHI
Chinese Journal of Practical Internal Medicine 2006;0(21):-
Objective To evaluate the curative effect of local immunotherapy with dexamethasone in healing Graves disease.Methods We divided the 76 patients diagnosed as Graves disease in the Second Affiliated Hospital of Xuzhou Medical College from Jan.2004 to Aug.2006 into two groups randomly.The therapy group(38 cases)were treated with oral drug and local immunotherapy,while the contrast group were treated with oral drug.Then we observed and analyzed the results of the two groups.Results There're 35 cases having exceptional curative effect such as rapid significance,short period of treatment and lasting effect in the therapy group,while only 28 cases having the less exceptional curative effect in the contrast groups.The difference was quite noticeable(P
2.Effects of metformin on transforming growth factor-beta1-induced epithelial-mesenchymal transition and invasion in the human melanoma cell line 1205Lu
Meiqi LIANG ; Guanzhao LIANG ; Jian GUO ; Xinsuo DUAN ; Jie LU
Chinese Journal of Dermatology 2017;50(6):426-430
Objective To evaluate the effects of metformin on transforming growth factor-betal (TGF-β 1)-induced epithelial-mesenchymal transition (EMT) in and invasion of the human melanoma cell line 1205Lu.Methods In vitro cultured 1205Lu cells were divided into 3 groups to be treated with serumfree culture medium (blank control group),serum-free culture medium containing 5 ng/ml TGF-β 1 (TGF-β 1 group) and serum-free culture medium containing 5 ng/ml TGF-β 1 and 1 mmol/L metformin (TGF-β1 + metformin group),respectively.After 48-hour treatment,morphological changes of 1205Lu cells in the above groups were observed by using a microscope,and photos were taken at the same time.Transwell invasion assay was performed to estimate cellular invasive activity,Western blot analysis and real-time fluorescence-based quantitative RT-PCR were conducted to determine the mRNA and protein expression of N-cadherin and matrix metalloproteinase-9 (MMP-9),respectively.Statistical analysis was carried out by one-way analysis of variance (ANOVA) and least significant difference (LSD) test.Results Compared with the blank control group,the stimulation of TGF-β 1 could induce the epithelial-mesenchymal transition (EMT)-like morphological changes in 1205Lu cells,while TGF-β 1 combined with metformin could reverse the EMT-like morpho-logical changes.The number of 1205Lu cells crossing the transwell Matrigel per high-power field (× 200) was significantly higher in the TGF-β1 group (412.2 ± 13.427) than in the blank control group (194.1 ± 8.295) and TGF-β1 + metformin group (175.3 ± 8.693).Compared with the blank control group and TGF-β1 + metformin group,the TGF-β1 group also showed significantly increased mRNA and protein expression of N-cadherin (mRNA:6.678 ± 0.043 vs.1.000 ± 0.000,1.035 ± 0.015;protein:1.963 ± 0.016 vs.0.603 ± 0.029,0.207 ± 0.009) and MMP-9 (mRNA:5.351 ± 0.604 vs.1.000 ± 0.000,0.930 ±0.130;protein:1.243 ± 0.027 vs.0.575 ± 0.009,0.629 ± 0.008).Conclusion Metformin can obviously inhibit TGF-β1-induced EMT-like morphological changes in,the capacity to penetrate Matrigel-coated transwell chambers of and the mRNA and protein expression of N-cadherin and MMP-9 in 1205Lu cells.
3.The epidemiologic studies on diabetes in 1180 workers of Xuzhou mine
Li CHEN ; Xia ZHANG ; Rongjuan GENG ; Meiqi LU
Chinese Journal of Primary Medicine and Pharmacy 2008;15(11):1766-1767
Objective Purpose understanding the prevalence of diabetes(DM) of Xuzhou mine workers and impacts on the incidence of risk factors, and discussing the prevention and treatment.Methods From November 2007 to March 2008,1180 Xuzhou mine workers were determinated by height,weight,abdominal circumference,blood pressure,fasting plasma glucose and lipid four(including triglycerides ,total cholesterol,low-density lipoprotein cholesterol, high-density lipoprotein cholesterol), OGTT test.Results DM prevalence rate is 5.25 percent,more men than women;prevalence rate under 40 years old is lower,the prevalence rate from 40 to 50 year-old began to increase, to the top of 50-year-old.Overweight and obesity people took the most part.Conclusion DM is a common diseases among Xuzhou mining area in-service workers with high rates of prevalence,it connected with age,family history, occupation,body mass index(BMI),etc.
4.Genetic polymorphisms in methylenetetrahydrofolate reductase and clinical response to chemotherapy in non-small cell lung cancer.
Meiqi SHI ; Changming GAO ; Jianzhong WU ; Jifeng FENG ; Haixia CAO ; Jianwei LU ; Lin XU
Chinese Journal of Lung Cancer 2006;9(6):519-524
BACKGROUNDMethylenetetrahydrofolate reductase (MTHFR) plays an important role in metabolism of folate and DNA methylation. In vitro, many studies have demonstrated that abnormal methylation of some genes may affect the sensitivity of tumor cells to cytotoxic drugs and agents interfering with DNA synthesis. The aim of this study is to investigate the relationship between genetic polymorphisms of MTHFR C677T or A1298C and the response to platinum-based chemotherapy in non-small cell lung cancer (NSCLC).
METHODSA total of 97 patients with NSCLC were analyzed. MTHFR genotypes were detected in all the patients by PCR-RFLP method. All the patients were treated with platinum-based chemotherapy.
RESULTS(1) Out of all the cases, the frequencies of MTHFR C677T C/C, C/T and T/T genotypes were 34.0%, 50.5% and 15.5%, respectively, while the frequencies of MTHFR A1298C A/A, A/C and C/C genotypes were 64.6%, 29.2% and 6.3%, respectively. The overall response rate (complete and partial response) to platinum-based chemotherapy was 39.2%. (2) No significant difference in response rate to chemotherapy was observed according to the MTHFR C677T or A1298C genotypes. However, MTHFR C677T and A1298C polymorphisms showed a synergic effect on chemotherapeutic efficacy, the response rate of patients with MTHFR C677T T allele and A1298C A/A genotype (51.1%) was significantly higher than those with MTHFR C677T C/T and A1298C C allele (12.5%)(P=0.007, OR=7.30, 95% CI: 1.34-52.47).
CONCLUSIONSThe results suggest that the synergic effect between MTHFR C677T and A1298C polymorphisms is associated with clinical response to platinum-based chemotherapy. Detection of MTHFR genotypes may indicate the sensitivity of NSCLC patients to platinum-based chemotherapy.
5.Establishment of a rat osteoporotic model by ovariectomy combined with glucocorticoid exposure
Yuzhuo ZHANG ; Gengyang SHEN ; Zhida ZHANG ; Wenhua ZHAO ; Jinjing HUANG ; Xiang YU ; Ting QIU ; Yongqiang LU ; Meiqi ZHAN ; Zhidong YANG ; Zhensong YAO ; De LIANG
Chinese Journal of Tissue Engineering Research 2017;21(24):3858-3863
BACKGROUND:There are many postmenopausal women taking hormone, which leads to much loss of bone mass, further inducing fragility fractures. The studies on the hormone exposure combined with ovariectomy-induced osteoporotic model are still immature, and the related molecular mechanism remains unclear. OBJECTIVE: To establish the rat osteoporotic model induced by ovariectomy combined with glucocorticoid exposure and to explore the underlying molecular mechanism. METHODS: Thirty 3-month-old female Sprague-Dawley rats were randomly divided into blank control, sham and model groups (n=10 per group). The rats in the blank control group received no intervention; rats in the sham group were clipped off a little of coeliac adipose tissue; the model rats received bilateral ovariectomy and 4-week administration of glucocorticoid. RESULTS AND CONCLUSION:At 4 weeks after modeling, compared with blank control and sham groups, the model group showed significantly lower bone mineral density of the femur, number of bone trabeculae and bone volume/total volume, and significantly wider bone trabecular spacing. Additionally, the model group revealed the damaged bone trabecular structure and thiner cortical bone. The expression level of Runx2 was downregulated whereas both collagen type 1α1 and peroxisome proliferators activated receptor γ mRNA were upregulated in the model group. These findings suggest that ovariectomized rats exposed to glucocorticoid rapidly develop femur osteoporosis, maybe by downregulating the expression of Runx2, as well as upregualting collagen type 1α1 and peroxisome proliferators activatedreceptor γ mRNA.
6.Meta-analysis on efficacy and adverse effects of neoadjuvant chemotherapy combined with capecitabine in treatment of breast cancer
Huikun NIU ; Yangming QU ; Meiqi LI ; Lu LI ; Xin LYU ; Yuanyuan SONG ; Chunshi GAO ; Bo LI
Journal of Jilin University(Medicine Edition) 2017;43(6):1171-1176
Objective:To explore the efficacy and adverse effects of docetaxel combined with capecitabine on the basis of anthracycline in the treatment of breast cancer patient on the basis of anthracycline,and to provide evidence-based medicine evidence for the clinical application of capecitabine.Methods:PubMed,EMBase,CNKI,VIP and Wanfang database were used to search the randomized controlled trials in which the breast cancer patients were treated by docetaxel combined with capecitabine and docetaxel alone.The qualities of the included studies were assessed by the modified Jadad scale.The effective data were extracted and the pathologic complete remission (pCR),recurrence-free survival (RFS),disease-free survival (DFS)and safety were evaluated by RevMan 5.3 software.Results:A total of 10 articles were included,including 12012 patients.The Meta-analysis results showed that there were no statistically significant differences in pCR (RR=1.04,95%CI:0.91-1.18,P =0.59),RFS (RR=0.86,95%CI:0.71 - 1.03,P = 0.10)and DFS (RR= 0.98,95% CI:0.86 - 1.11,P = 0.71)between docetaxel combined with capecitabine and docetaxel alone. The clinical safety analysis results showed that the patients treated with docetaxel combined with capecitabine were susceptible to hand-foot syndrome (OR= 7.13, 95%CI:4.76-10.69,P <0.001)and stomatitis (OR = 1.93,95%CI:1.10-3.40,P =0.02).Conclusion:On the basis of anthracycline treatment,the efficacies of docetaxel combined with capecitabine and docetaxel alone in the treatment of the breast cancer patients are similar.The former is more likely to cause the hand-foot syndrome and stomatitis.
7.Application of noninvasive brain-edema dynamic monitoring in critically ill patients with traumatic brain injury
Meiqi LU ; Xinglei WANG ; Huiping GONG ; Mingju SHAO ; Jiebin YU ; Xiaoyang WANG ; Duyin JIANG ; Jie ZHAO
Chinese Critical Care Medicine 2023;35(3):334-336
Brain edema could be secondary to cerebral lesion caused by a variety of reasons, severe cases may result in brain herniation or even death. Accurate real-time monitoring of cerebral edema, rational application of dehydrating drugs, and timely treatment of cerebral edema were very important for patients. However, there were defects in the monitoring methods commonly used in clinical practice. Noninvasive brain-edema monitoring was a new method, which can quantify the degree of brain edema by electromagnetic disturbance and directly reflect the state of brain edema. This article reviews the application of noninvasive brain-edema monitoring in the treatment of in critically ill patients with traumatic brain injury.
8.Anti-tumor activities and apoptotic mechanism of ribosome-inactivating proteins.
Meiqi ZENG ; Manyin ZHENG ; Desheng LU ; Jun WANG ; Wenqi JIANG ; Ou SHA
Chinese Journal of Cancer 2015;34(8):325-334
Ribosome-inactivating proteins (RIPs) belong to a family of enzymes that attack eukaryotic ribosomes and potently inhibit cellular protein synthesis. RIPs possess several biomedical properties, including anti-viral and anti-tumor activities. Multiple RIPs are known to inhibit tumor cell proliferation through inducing apoptosis in a variety of cancers, such as breast cancer, leukemia/lymphoma, and hepatoma. This review focuses on the anti-tumor activities of RIPs and their apoptotic effects through three closely related pathways: mitochondrial, death receptor, and endoplasmic reticulum pathways.
Animals
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Antineoplastic Agents
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Apoptosis
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Endoplasmic Reticulum
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Humans
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Mitochondria
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Plant Proteins
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Receptors, Death Domain
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Ribosome Inactivating Proteins
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Ribosomes
9.Dynamic Changes of Volatile Components During Processing Process of Jianchangbang Characteristic Ginger Processed Xingpo Pieces Based on HS-GC-MS
Yuxun CHEN ; Wanai XU ; Jingyu WU ; Meiqi LU ; Lingbang MENG ; Cheng XU ; Hailian ZHENG ; Xian ZHANG ; Na ZHANG ; Qianfeng GONG ; Huan YU
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(20):127-134
ObjectiveTo reveal the influence of Jianchangbang characteristic processing method on the change process of volatile components and the processing mechanism of reducing toxicity and increasing efficiency of Magnoliae Officinalis Cortex(MOC) by studying the changes in the composition and content of volatile components during the processing of ginger processed Xingpo pieces. MethodSamples of raw products, ginger juice moisturized products and stir-fried and heap moisturized products of MOC were taken according to the set time points, and headspace gas chromatography-mass spectrometry(HS-GC-MS) was used to determine the contents of volatile components in the samples, and the relative content of each component was obtained by peak area normalization. Principal component analysis(PCA) and orthogonal partial least squares-discriminant analysis(OPLS-DA) were performed on the sample data using SIMCA 14.1 software, and the differential components during the processing were screened with variable importance in the projection(VIP) value>1 as the indicator. ResultA total of 68 volatile components were identified in the samples, among which some of the chemical components with similar structures showed similar trends of changes, and there was also the phenomenon of interconversion between compounds. Compared with the raw products, the contents of 42 components in ginger juice moisturized products increased, while the contents of 25 components decreased, 19 components were unique, and 4 components were unique to the raw products. Compared with ginger juice moisturized products, MOC in the early stage of piling had three unique components, and the contents of 11 components such as cyclosativene and (+)-α-pinene increased, and the contents of 5 components such as tricyclic terpene and α-curcumene decreased, and ginger juice moisturized products had four unique components. Compared with the early stage of piling, in the later stage, the contents of 8 components such as (+)-α-pinene and camphene significantly increased, while the contents of 6 components such as linalool and α-selinene significantly decreased. During the processing of MOC, there were significant changes in the chemical composition of the samples before and after 20 days. The differences between ginger juice moistening and the early stage of piling, the early stage and the later stage of piling could be clearly distinguished. ConclusionDuring the preparation process of ginger processed Xingpo pieces, the addition of ginger juice can reduce the contents of stimulating components, and the contents of active components continue to increase in several stages, such as the addition of ginger juice, frying and heap moisturizing, the quality of the decoction pieces may change significantly at about 20 d of processing. This study can provide a research basis for exploring the processing mechanism of ginger processed Xingpo pieces.