2.Effects of Diet on Bone Mineral Density
Ning LI ; Xunwu MENG ; Shoufen DU
Acta Nutrimenta Sinica 1956;0(01):-
3.Expression and significance of NF-κB and P-glycoprotein in cervical cancer tissue before and after neoadjuvant chemotherapy
Yan ZHANG ; Ning LI ; Aixia MENG
Clinical Medicine of China 2011;27(1):23-26
Objective To investigate the relationship between the expression of NF-κB and Pglycoprotein(P-gp) in cervical cancer tissue before and after neoadjuvant chemotherapy(NACT). Methods The mRNA and the protein expression levels of NF-κB and P-gp were determined by Real time-PCR and immunohistochemical assay respectively in cancer specimens from 40 cevical cancer patients, which were collected before and after NACT. Results The mRNA expression levels of NF-κB were 50. 340 ± 0. 780 and 67. 595 ± 0. 914 before and after NACT respectively, which showed significant difference statistically ( t = -73. 384 ,P < 0. 01 ). We also found significant difference in the comparison between MDR1 mRNA expression before and after NACT(45. 800 ±0. 636 vs 62. 381 ±0. 743 ,t = -66. 582,P <0. 01 ). The positive rate of NF-κB protein expression before and after NACT were 50% ( 20/40 ), 80% ( 32/40 ) respectively, which showed significant difference statistically( χ2 = 7. 912, P = 0. 005 ). The positive rate of P-gp protein expression after NACT was significantly higher than that before NACT [ 40% ( 16/40 ) vs 70% ( 28/40 ), χ2 = 7. 273, P = 0. 007 ]The mRNA and protein expressions of NF-κB were positively correlated with those of P-gp before and after NACT( r = 0. 408,r = 0. 327 respectively, Ps < 0. 05 ). Conclusion NF-κB and P-gp may play an important role in multi-drug resistance of cervical carcinoma. Chemotherapy drugs in our NACT strategy may induce the activation of NF-κB and multi-drug resistance. Activation of NF-κB may correlate with multi-drug resistance mediated by P-gp.
4.Transgenic Production of Polyunsaturated Fatty Acids in Mammalian Cells
Ping KONG ; Zhuo DU ; Bo TANG ; Qingyong MENG ; Ning LI
Progress in Biochemistry and Biophysics 2006;0(11):-
Linoleic acid (C18∶2n-6) and ?-linolenic acid (C18∶3n-3) are found widely in fungi, plants and some lower animals. However, they can not be synthesized in mammals due to lack of △12 and ?-3 fatty acid desaturases. To enable endogenous production of essential fatty acids in mammalian cells, here the stable expression of a Caenorhabditis elegans gene FAT-2 encoding △12 fatty acid desaturase in CHO cells was reported. First, the FAT-2 coding sequence was cloned by RT-PCR. To facilitate high level synthesis of heterogeneous protein, the codon usage of the fatty acid desaturase genes was optimized according to the codon preference of mouse by site-directed mutagenesis, 2 synonymous mutations were introduced into FAT-2 gene by overlapping PCR. The codon-modified gene was finally fused to pBudCE4.1 vector (Invitrogen) under the control of CMV promoter. The expression vector pBudCE-FAT2 was linearized with NheⅠ, and then transfected CHO cells, the cells were under Zeocin selection for nine days and then propagated, then the transfected cells were harvested. The genome and total RNA were isolated for PCR and Norhern blot ananlysis. The results revealed that FAT-2 gene has been integrated into the genome of CHO cells and expressed properly. Fatty acids of total cellular lipids were analyzed by gas chromatography. The results indicate that the expression and function of △-12 fatty acid desaturase resulted in accumulation of linoleic acid. The levels of linoleic acid in transgenic cells were 2.4-fold higher than those in wild-type cells. The moderate linoleic acid in CHO cells was derived from cell culture media uptaken by cell membrane. The results demonstrate that a heterogenous desaturase gene can function well in mammalian cells and prove that transgenic approach is an efficient strategy for changing fatty acid composition of mammals.
5.Intervention Study on Compound Prescription of Jie Yu No.1 Affecting the Function of SS Adjusting HPA Axis.
Li WU ; Liping ZHANG ; Meng XIA ; Ning XIAO ;
Journal of Medical Research 2006;0(03):-
Objective To investigate the affecting mechanism of Jie Yu No.1 Decoction(JY),which was a complex prescription with the function of adjusting spleen and stomach,on the HPA-axis function of depression model rats.Methods60 SD rats were randomly divided into the normal,the model,the Amitriptyline and the JY decoction groups,with 15 each.Isolated-living condition and chronic mild unpredictable stress were applied suceessively to set up DEP rat model.Radiative immunotherapy was used to measure the content of hormone(CRH),somatostatin(SS) and Cortisol(CORT) in the blood plasma.The correlativity was Analyzed between SS,CRH and CORT to preliminary discuss the affecting mechanism of JY on the function of SS adjusting HPA-axis,and to clarify the antidepressant mechanism of the JY.ResultsThe correlation coefficient between SS and CRH was r=-0.5094,P=0.1972,t=1.4501.The result indicated that SS and CRH had the remarkable negatively correlation.The correlation coefficient between SS and CORT was r=0.010,P=0.9613,t=0.0244.The result indicated that SS and CORT had no remarkable correlation.ConclusionThe antidepressant mechanism of JY may be as that SS reduces CRH contents and reaches the adjustment of HPA-axis function in order to play its antidepressant effect.
6.The SWOT analysis on private hospitals in the background of new healthcare reform
Ning CHEN ; Xinliang LIU ; Meng LI ; Shuyan GUO ; Siping DONG
Chinese Journal of Health Policy 2015;(8):39-43
Objective:This study aims to ensure the private hospitals development strategy in the background of new healthcare reform and put forward some scientific suggestions to help promote their sustainable development. Methods:The SWOT analysis method was adopted to analyze the private hospitals’ internal strength, weakness, exter-nal opportunity and threats. Results: The results showed a clear property right, advanced management system and other outstanding advantages in the private hospitals. Opportunities like the improved policy environment and people’s medical demand expansion are also very prominent. Meanwhile, the private hospitals development also faces some disadvantages and challenges such as illegal operation, disorder in the market competition, vague orientation, etc. Conclusions:It suggests the strengthening of the personnel and hospital culture construction, adoption of the differen-tiation strategy, improvement of the diagnosis and treatment ability, etc.
7.The application of double pedicle blood supply pectoralis major myocutaneous flap in reconstruction of laryngeal and hypo pharyngeal defect after carcinoma resection.
Wei ZHANG ; Mingyue LI ; Ning LIU ; Fangwen CHEN ; Qingzhi MENG
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2015;29(7):589-592
OBJECTIVE:
To explore the application of double pedicle blood supply pectoralis major myocutaneous flap in reconstruction of laryngeal and hypo pharyngeal defect after carcinoma resection.
METHOD:
All the patients received initial treatment. Pectoralis major myocutaneous flap was Applied in one-stage reconstruction in 22 cases of laryngocarcinoma and hypopharyngeal carcinoma with post-operation defect. During operation, pectoral branches of thoracoacromial vessels and branch of lateral thoracic vessels were reserved and prepared to be double pedicle vessel fascia bundle without muscle at the beginning part, rearched to defect area through subclavian tunnel. After operation, it is necessary to closely observe the subcutaneous swelling, quantity and color of the drain and others of neck surgery area to exclude the occurrence of surgical hematoma. When there is suspicion, do timely exploration.
RESULT:
Pectoralis major myocutaneous flaps of 22 patients were all survived. Pharyngeal fistula occurred in 2 cases and was cured by change of dressing. Twenty-one cases received radiotherapy after operation without secondary flap necrosis. After follow-up of 6 months to 24 months, one case of roll repairment of circumferential defect in cervical esophagus,found to have anastomotic stenosis 8 months after radiotherapy and then underwent gastrostomy treatment,the other 21 cases showed good recovery of swallowing function. Among 13 cases with laryngeal function reserved, only 1 case wearing tube and the extubation rate was 92.3% without communication barriers, no patient died in the short follow-up period.
CONCLUSION
For double pedicle blood supply pectoralis major nyocutaneous flap, blood supply are fully guaranteed and does not require complicated equipment to observe and monitor the flap blood supply after operation, it is important to exclude factors that may lead to muscular flap necrosis to ensure the survival of pectoralis major myocutaneous flap.
Esophagus
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surgery
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Fistula
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pathology
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Humans
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Hypopharyngeal Neoplasms
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surgery
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Laryngeal Neoplasms
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surgery
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Larynx
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surgery
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Myocutaneous Flap
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Pharynx
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pathology
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surgery
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Reconstructive Surgical Procedures
8.n-3 PUFA can inhibit the apoptosis of intestinal epithelial cells of chronic rejection after small intestinal transplantation
Kun ZHAO ; Haiyun ZHANG ; Meng WANG ; Ning LI ; Yousheng LI ; Jieshou LI
Parenteral & Enteral Nutrition 2009;16(6):355-357,363
Objective: The aim of our work was to investigate the effects of n-3 polyunsaturated fatty acids on apoptosis, granzyme B and perforin expression of intestinal epithelial cells of chronic rejection after small intestinal transplantation. Methods: Small bowel transplantation was performed and rats were divided into three groups: Group 1, Lewis-to-Lewis, group 2, F344-to-Lewis, dietary corn oil, Group 3, F344-to-Lewis, dietary fish oil. All recipients were killed after 16 weeks of posttransplantation. The apoptosis rate of mucosal cells were evaluated by flow cytometry. The expressions of granzyme B and perforin were analyzed by reverse transcriptase RT-PCR. Results: A high apoptotic rate was observed when the allografts demonstrated one or more histological features of chronic rejection. N-3 polyunsaturated fatty acids decreased the rate of the apoptosis and inhibitted the expressions of granzyme B and perforin. Conclusion: N-3 polyunsaturated fatty acids can suppress the chronic rejection in small intestinal transplantation.
9.The correlation of brachial ankle pulse wave velocity with arterosclerosis at different estimated levels of glomerular filtration rate
Junxing YU ; Quanhui ZHAO ; Wei LI ; Junjuan LI ; Meng WANG ; Chunhong NING ; Yajing ZHANG ; Shouling WU
Chinese Journal of Internal Medicine 2017;56(9):673-676
To explore the relationship between brachial ankle artery pulse wave velocity of the (baPWV) in different estimation GFR (eGFR) groups and atherosclerosis.In 2010,2012 and 2014,eGFR and baPWV were detected in 1 427 healthy persons.As eGFR level decreased,baPWV increased accordingly with higher proportion of baPWV ≥1 400 cm/s.The percentage of eGFR lower than 60 ml · min-1 · 1.73 m-2 was similar in subgroups with different baPWV.However,the proportion of eGFR reduction ≥ 30% decreased according to the elevation of baPWV.Multivariate logistic regression analysis indicated the lower the eGFR,the higher the risk of atherosclerosis.Low eGFR is an independent risk factor for atherosclerosis.
10.Establishment of Method and Verification for Leukocyte Differential Count of Sysmex Hematology Analyzer
Xin MENG ; Gang WANG ; Li YUAN ; Wei WANG ; Ning ZHANG ; Qiang LI
Journal of Modern Laboratory Medicine 2016;(1):101-103,107
Objective To calibrate the leukocyte differential counts and compare between all sysmex hematology analyzers, making the results accurate and reliable.Methods Used the manual visual microscope method as a reference method for leu-kocyte differential count to detect the fresh blood and then did assignment.The target value,calibrating the leukocyte differ-ential counts of Sysmex XE-2100,XS-800i and XN-20 (A1)with the manual value fresh blood,was calibrated and then com-pared hematology analyzers with another fresh blood.Results The leukocyte differential counts of all hematology analyzers were within the 95% confidence interval of the manual visual microscope method.Comparing with the reference system,the correlation coefficient(r)of NEUT%,LYM%,MON%,EOS% and BASO% of XS-800i analyzer were 0.99,0.99,0.98, 0.98 and 0.59,respectively.The correlation coefficient (r)of NEUT%,LYM%,MON%,EOS% and BASO% of XN-20 (A1)analyzer were 0.99,0.99,0.97,0.98 and 0.55,respectively.XS-800i and XN-20 (A1)NEUT%,LYM%,MON% and EOS% were within confidence interval 100%.XS-800i BASO% were within confidence interval 95%.XN-20 (A1)BASO%were within confidence interval 90%.Conclusion This scheme could meet the WS/T 246-2005 demands.In order to ensure the accuracy and the results of mutual recognition of the leukocyte differential counts,the comparison analysis of the results of the manual visual microscope method and hematology analyzer were made.