1.Breast cancer and thyroid diseases
Journal of International Oncology 2013;(3):200-203
Thyroid hormones and the related antibodies have some function in the natural process of breast cancer development.The possible mechanisms include:iodine complex can inhibit breast cell proliferation and can induce apoptosis; thyroid hormone can affect breast cancer cell proliferation and apoptosis; the imbalance of thyroid hormone and estrogen hormone promotes breast cells cancerous; hypothyroidism may affect the proliferation and invasiveness of breast tumors; lymphocytic infiltration or abnormal local immune response in thyroid disease.
2.The inhibitory expression of VEGF in antisense blocking of PTTG gene on human cholangiocarcinoma cell line QBC939
Ling CHEN ; Huihuan TANG ; Chao FEN ; Yanguang WEN ; Zhiyuan JIAN
Chinese Journal of General Surgery 2001;0(10):-
Objective To investigate the effect of expression of pituitary tumor transforming gene(PTTG) on the expression of inhibitory of vascular endothelial growth factor(VEGF).Methods The constructed(recomibinant) vector,pcDNA3.1-PTTGas that contained full-length antisense PTTG,was transfected into the cholangiocarcinoma cell line QBC939 in different quantity.After 48h incubation,the variation of expressions of PTTG and VEGF mRNAs and proteins were observed by RT-PCP and Western-blot method.Results(After) successful transfecting the recomibinant vector into QBC939,the mRNAs and proteins of PTTG and VEGF were all inhibited.Linear correlation analysis showed positive correlation between descendent extents of PTTG and VEGF(P
3. The effect of rosiglitazone on expressions of IL-18, MCP-1 and MMP-9 in rabbits with atherosclerosis
Chinese Pharmaceutical Journal 2012;47(20):1621-1625
OBJECTIVE: To compare the effects of rosiglitazone and simvastatin on inflammatory factors in atherosclerotic rabbits and to explore the anti-atherosclerosis mechanism. METHODS: Thirty-six male New Zealand rabbits were randomly divided into four groups: control group, model group, simvastatin group, and rosiglitazone group. Subcutaneous injection of dl-homocyesteine thiolac-tone combined with high fat diet was used to reproduce atherosclerotic rabbit model, the serum level of interleukin-18 (IL-18) was examined by ELISA, and the expressions of monocyte chemoattractant-1 (MCP-1) and matrix metalloproteinase-9 (MMP-9) in aortic atherosclerotic plaque were examined by immunohistochemistry. RESULTS: Compared with the control group, the serum levels of IL-18 and the expressions of MMP-9 and MCP-1 in aortic atherosclerotic plaque were increased obviously in the other three groups (P<0.05); compared with model group, the serum levels of IL-18 and the expressions of MMP-9 and MCP-1 in rosiglitazone and simvastatin group were decreased significantly (P<0.01), the level of IL-18 in rosiglitazone group decreased significantly (P<0.05), but the expressions of MMP-9 and MCP-1 in rosiglitazone group and simvastatin group had no statistic difference (P>0.05). CONCLUSION: Rosiglitazone can decrease the serum level of IL-18 and the expressions of MCP-1 and MMP-9 in aortic atherosclerotic plaque, and inhibit the development of atherosclerosis. The mechanism is related to anti-inflammation.
4. Determination of icariin, epimendin A, epimendin B, and epimendin C in Epimedii Herba by QAMS
Chinese Traditional and Herbal Drugs 2016;47(1):130-137
Objective: To establish a method of quantitative analysis of multi-components by single marker (QAMS) for determining the flavonoids in Epimedii Herba and improve the level of quality control of Epimedii Herba by applying multi-index components control. Methods: To detect a relative correction factor (RCF) of epimendin A, epimendin B, epimendin C, and icariin at detection wavelength of 270 nm by HPLC in the range of a linear, to investigate the reproducibility of RCF in different chromatographic columns and different instruments as well, to consider icariin as an internal standard, to calculate the contents of epimendin A, epimendin B, and epimendin C in Epimedii Herba by using RCF; Meanwhile, to analyze the content of the four components in 100 Epimedii Herba by external standard method (ESM) and verify the accuracy and scientificalness of QAMS. Results: The RCF had a good reproducibility, which were 1.352, 1.384, and 1.340. The values of RSD were less than 5%; No significant differences were found in the quantitative results of epimendin A, epimendin B, and epimendin C determined by using RCF and ESM. Conclusion: This method could be accurate and reliable, simple and feasible, which could save the reference and costs of testing. It further validates that this approach can be used as a quality control method for the determination of multi-component index in Epimedii Herba.
5.Advances in Isobaric Tags for Relative and Absolute Quantitation Techniques Research
Zhi-Wen LUO ; Liang ZHU ; Wei-Fen XIE ;
China Biotechnology 2006;0(10):-
Quantitative proteomics is a novel subject of proteomics research. There are several new techniques employed for the protein quantitative study. Isobaric tags for relative and absolute quantitation (iTRAQ) technology for protein quantitation using mass spectrometry is a recent powerful means of determining relative and absolute protein levels in up to four samples simultaneously. The iTRAQ reagent produced high quality, reproducible result in enriched complexes, organelles, and whole cell lysates. The status of the recent promising techniques and their possible future evolution were reviewed.
6.Propofol combined with midazolam intravenous sedation anesthesia in pediatric upper gastrointestinal endoscopy
Dinghua XIAO ; Fen WANG ; Xiaoyan WANG ; Wuliang TANG ; Wen OUYANG ; Shourong SHEN
Journal of Central South University(Medical Sciences) 2009;34(7):595-598
Objective To explore the application of propofol combined with midazolam intrave-nous anesthesia in pediatric upper gastrointestinal endoscopy, Methods A total of 497 ASA Ⅰ~Ⅱ patients who received sedative upper gastrointestinal endoscopy were assigned to a children group (2~14 years) and an adults group (18~65 years). The 2 groups were treated with midazolam (0.02~0.03 mg/kg, iv) and propofol (0.6~0.7 mg/s, iv) with an interval of 3~5 minutes. Enterseopy was inserted at light sleep, relaxing muscles, and disappearance of eyelash relaxation. Combining of pro-endoscopy, reaction to intravenous administration, dose of propofol, reaction to en-doscopy, time of returning to consciousness, changes of SpO2, R, HR, and BP, and sedative quali-ty were evaluated. Results Good sedation of the 2 groups after intravenous administration was ob-served. Rate of combining of pro-endoscopy in children was lower (42%) than that in adults (100%). The incidence of restlessness, hyperphasia, temporary decreasing of SpO2, dose of propofol of per kilogram weight, time of returning to consciousness in the children were 82.7%, 17%, 2.4 mg/kg, and (17.5±3.2)min, respectively, which were all higher in the adults [9%,4%,1.4 mg/kg, and (9.5±1.3)min, P<0.01]. HR and BP decreased in the 2 groups, and recovered rapidly after the endoscopy. There was no significant difference between the 2 groups (P>0.05). Conclusion It is safe and effective to use propofol combined with midazolam intravenous sedation anesthesia in pediatric upper gastrointestinal endoscopy.
7.Impact of drug molecules on HP-β-CD compound inclusion.
Dan-Dan TANG ; Na LI ; Li-Wen WANG ; Ji-Fen ZHANG ; Xiao-Yu XU
China Journal of Chinese Materia Medica 2014;39(15):2893-2899
To study the interaction of drugs of different properties, namely puerarin, borneol and catalpol in the process of in- clusion, in order to explore the inclusion regularity of multi-component and multi-property traditional Chinese medicine compound in- clusions. With HP-β-CD as the inclusion material, the freeze-drying method was used to prepare the inclusion. The inclusion between puerarin, borneol and catalpol was tested by measuring the inclusion concentration, DSC and X-ray diffraction. According to the find- ings, when insoluble drugs puerarin and borneol were included simultaneously, and puerarin was overdosed, puerarin included was almost equal to puerarin included, and borneol was not included. When puerarin was under-dosed, and HP-β-CD was overdosed, borne- ol was included, and the simultaneous inclusion was lower than the separate inclusion of borneol. When water-soluble drug catalpol was jointly included with puerarin or borneol, the simultaneous inclusion was almost the same with their separate inclusion, without charac- teristic peak of catalpol in DSC and X-ray diffraction patterns. There is a competition in the simultaneous inclusion between water-solu- ble drugs puerarin and borneol and a stronger competition in puerarin. The water-soluble drug catalpol could be included with HP-β-CD with no impact on the inclusion of puerarin or borneol.
2-Hydroxypropyl-beta-cyclodextrin
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Bornanes
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chemistry
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therapeutic use
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Brain Ischemia
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drug therapy
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Drug Compounding
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methods
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Freeze Drying
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Iridoid Glucosides
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chemistry
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therapeutic use
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Isoflavones
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chemistry
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therapeutic use
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Solubility
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beta-Cyclodextrins
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chemistry
9.Relationship between the serum anti-Müllerian hormone and testicular development.
Wen-xin SUN ; De-fen WANG ; Wei WANG ; Rong-ping XI
Chinese Journal of Pediatrics 2003;41(4):293-294
Adolescent
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Adult
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Anti-Mullerian Hormone
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Biomarkers
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blood
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Child
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Child, Preschool
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Glycoproteins
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blood
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Humans
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Infant
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Infant, Newborn
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Male
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Testicular Hormones
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blood
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Testis
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growth & development