1.Analysis on surgical treatment efficacy of lumbar spondylolisthesis patients with modic change
Wenqiang YI ; Hong XIAO ; Xiaobao REN
Journal of Regional Anatomy and Operative Surgery 2015;(4):440-442
Objective To investigate the treatment efficacy of lumbar spondylolisthesis patients with modic change. Methods The da-ta of 45 lumbar spondylolisthesis patients with modic change were analyzed retrospectively,which were admitted into hospital from January 2010 to December 2013 and received posterior lumbar interbody fusion ( PLIF) surgery. Those patients were tested by X-ray and Magnetic resonance imaging ( MRI) and confirmed the type of spondylolisthesis and Modic change. Based on the degree of spondylolysis and whether combined or not with Modic change,all the patients were divided into six groups:group A with Ⅱ grade spondylolisthesis;group B with Ⅲgrade spondylolisthesis;group C with Ⅱ grade spondylolisthesis with Modic typeⅠ;group D withⅡgrade spondylolisthesis with Modic typeⅡ;group E with Ⅲ grade spondylolisthesis with Modic type Ⅰ;group F with Ⅲ grade spondylolisthesis with Modic type Ⅱ. Those patients were evaluated preoperatively and postoperatively the scores according to the Visual Analogue Scale ( VAS) and Oswestry Disability Index ( ODI) systems,the obtained data were statistically analyzed and then were used to evaluated the treatment efficacy. Results The treatment efficacy of those patients were evaluated by follow-up work based on the scores of VAS and ODI systems,the results indicated that all those patients were improved in the scores of pain and ODI at different agrees. Within groups,the scores of low back and leg pain in VAS system and ODI preoperative were all significantly lower than that of postoperative (P<0. 0001). However,there were no significant differences of those scores among groups (P>0. 05). Conclusion Those spondylolisthesis patients with Modic change could obtained satisfactory clinical efficacy after posterior lumbar interbody fusion ( PLIF) surgery.
2.Research progresses of pharmacokinetics of polysaccharides.
Yang YI ; Hong-Xun WANG ; Jing-Ren HE
Acta Pharmaceutica Sinica 2014;49(4):443-449
Pharmacokinetic analysis has attracted more and more attentions in the research field of bioactive natural product. However, there is limited study on the pharmacokinetics of polysaccharides. This paper focused on the research progresses of pharmacokinetics of polysaccharide, summarized the applications of chromatography, isotope labeling method, spectrophotometry, fluorospectrophotometry and biological assay in the analysis of polysaccharide pharmacokinetics, elucidated the behaviors of absorption, distribution, degradation and excretion of polysaccharide in experimental animals, and revealed the effects of physicochemical characteristic, administration dose and route on the pharmacokinetic properties of polysaccharide, which could be served as a reference for the related works.
Administration, Oral
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Animals
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Injections
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Intestinal Absorption
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Metabolic Clearance Rate
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Molecular Weight
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Polysaccharides
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administration & dosage
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analysis
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pharmacokinetics
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urine
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Tissue Distribution
3.Metabolic profile and insulin resistance in patients with OSAS
qi, SHAO ; ying, REN ; shan-kai, YIN ; hong-liang, YI
Journal of Shanghai Jiaotong University(Medical Science) 2006;0(10):-
40/h) and non-severe group(n=15,AHI 5-40/h).Anthropometric measurements,fasting plasma glucose,insulin,blood fat,and CT quantitative measurement of abdominal adipose tissue were recorded. Results Insulin resistance index(HOMA-IR) in patients with OSAS was related to hypoxia independently of obesity variables.The severe group was characterized by more serious metabolic disorders and higher prevalence of metabolic syndrome than the non-severe group.OSAS was positively associated with an increased metabolic disorders risk for the severe group versus the non-severe group(OR=8.8).Using the receiver operating characteristic(ROC) curve analysis,waist circumference had the greatest areas under the ROC curves compared with body mass index and neck circumference.The results of multiple stepwise regression of lowest pulse oxygen saturation(LSpO2)during overnight sleep indicated that neck circumference followed by epworth sleepiness score(ESS) entered the equation(P
4.Effect of sevoflurane on expression of α7 nicotinic acetylcholine receptor in hippocampal neurons of rats
Yimin REN ; Huikan HONG ; Shaopeng GANG ; Yi MA ; Kaiyun FANG
Chinese Journal of Anesthesiology 2017;37(3):288-291
Objective To evaluate the effect of sevoflurane on the expression of α7 nicotinic acetylcholine receptor (α7nAChR) in hippocampal neurons of rats.Methods Forty-eight pathogen-free healthy adult Sprague-Dawley rats of both sexes,weighing 210-280 g,aged 3-4 months,were divided into 4 groups (n=12 each) using a random number table:control group (group C) and 1%,3% and 5% sevoflurane groups (S1,S2 and S3 groups).In S1,S2 and S3 groups,1%,3% and 5% sevoflurane were inhaled for 1 h,respectively.Morris water maze test was performed at 1 and 7 days after anesthesia to assess the cognitive function.Six rats in each group were sacrificed after the end of the test.The brains were then removed and the hippocampi were isolated for detection of the expression of α7nAChR (by Western blot) and contents of tumor necrosis factor-alpha and interleukin-1 (by enzyme-linked immunosorbent assay).Results Compared with group C,the number of crossing the platform was significantly decreased at 1 and 7 days after anesthesia in group S1,the time of staying at the target quadrant was significantly shortened,the number of crossing the platform was decreased,and the rate of time of staying at the original platform quadrant and rate of swimming distance at the original platform quadrant were decreased at 1 and 7 days after anesthesia in S2 and S3 groups,and the contents of tumor necrosis factor-alpha and interleukin-1 were significantly increased,and the expression of α7nAChR was down-regulated at 1 and 7 days after anesthesia in S1,S2 and S3 groups (P<0.05).Compared with group S1,the expression of α7nAChR was significantly down-regulated at 1 and 7 days after anesthesia in S2 and S3 groups (P<0.05).Compared with group S2,the expression of α7nAChR was significantly down-regulated at 1 day after anesthesia in group S3 (P<0.05).There was no significant difference in each parameter of Morris water maze test among group S1,group S2 and group S3 (P>0.05).Conclusion The mechanism by which sevoflurane induces inflammatory responses in hippocampi is related to down-regulation of α7nAChR expression in hippocampal neurons of rats.
5.Feasibility of quantitative assessment of pancreatic perfusion with dynamic contrast-enhanced MRI in healthy volunteers
Weiwei ZHAO ; Jing REN ; Hong YIN ; Yi HUAN
Chinese Journal of Medical Imaging Technology 2017;33(6):893-896
Objective To explore the feasibility of quantitative assessment of pancreatic perfusion using dynamic contrastenhanced MRI (DCE-MRI).Methods Totally 68 healthy volunteers were divided into youth,middle and old groups according to ages.All volunteers underwent pancreas DCE-MRI examination.Images were transmitted to Research-DCE MRI Tool workstation to calculate the quantitative parameters,including volume transfer constant (Ktrans),interstitium-toplasma rate constant (Kep),interstitial volume (Ve) and plasma volume (Vp).Independent sample t test and one-way ANOVA test were used to evaluate the differences of pancreatic perfusion.Results There were no significant differences of Ktrans,Kep, Ve and Vp between male and female;Ve in old group was higher than that in youth and middle groups (P =0.036,0.001);Vp of pancreatic head was higher than that of pancreatic body and tail (P=0.011,0.023).Conclusion DCE-MRI can be applied to provide a reliable quantitative assessment of pancreatic perfusion noninvasively.The parameters of DCE-MRI of pancreatic perfusion are independent of gender but vary with age and pancreatic sites.
6.Advances in Natriuretic Peptide Study(review)
Xiao-bin LI ; Lu-yue GAI ; Yi-hong REN
Chinese Journal of Rehabilitation Theory and Practice 2006;12(11):968-971
The natriuretic peptide(NP) system is an endocrine system that maintains fluid and pressure homeostasis by modulating cardiac and renal function.NP levels are elevated in patients with heart failure(HF) and other cardiac diseases.They are early warning system to help to identify patients at high risk for cardiac events.Measurement of NPs may be used to aid diagnosis and prognosis.NPs also can exert important anti-proliferative,anti-fibrotic effects to prevent the remodification in the heart with myocardial infarction and advanced HF.Brain natriuretic peptide is an important biomarker in patients with HF and other cardiovascular diseases,such as pulmonary hypertension and atherosclerotic vascular disease.In addition,synthetic NPs such as nesiritide could be used to treat the patients with acutely congestive HF. These Recombinant drugs are also being investigated for myocardial and renal protection in the setting of cardiac surgery and for prevention of cardiac remodeling.
7.Efficacy and safety of combination therapy with simvastatin and fenofibrate for combined hyperlipidemia.
Jing-Yi REN ; Hong CHEN ; Yu LUO
Chinese Journal of Cardiology 2005;33(2):122-126
OBJECTIVEThe aim of this study was to evaluate the efficacy and safety of combination therapy with simvastatin and fenofibrate in patients with combined hyperlipidemia.
METHODSA total of 221 patients with combined hyperlipidemia were randomly assigned to receive 10 mg simvastatin (n = 72) or 200 mg fenofibrate (n = 68), or a combination of 10 mg simvastatin + 200 mg fenofibrate (n = 81) for 6 months. Lipid profiles, physical and laboratory investigations for adverse effects were assessed.
RESULTS(1) Combination treatment were more effective in normalizing lipid profile than any monotherapy. Serum TC, LDL-C, and TG were reduced by 30%, 37% and 56% respectively, whilst HDL-C significantly increased by 24% (all P < 0.01). The improvement in TG and HDL-C achieved by combination treatment was superior to fenofibrate or simvastatin alone. (2) The success rate of TC, LDL-C and TG control in the combination therapy group were 51%, 55% and 61% respectively, with an overall success rate (all three together) of 45%, which was superior to either drug given as monotherapy. (3) All treatments were well tolerated with no increase in adverse events for combination therapy versus monotherapy.
CONCLUSIONThe results of this study demonstrated that combination therapy with fenofibrate (200 mg/day) and low-dose simvastatin (10 mg/day) is more effective than monotherapy in patients with combined hyperlipidemia, and is generally safe and well tolerated.
Drug Therapy, Combination ; Female ; Fenofibrate ; administration & dosage ; adverse effects ; therapeutic use ; Humans ; Hyperlipoproteinemia Type V ; drug therapy ; Hypolipidemic Agents ; administration & dosage ; adverse effects ; therapeutic use ; Male ; Middle Aged ; Simvastatin ; administration & dosage ; adverse effects ; therapeutic use
8.Protective effects of mixed crystamn on injured retinal ganglion cells after optic nerve injury in Long-Evans rats
Zhi-Min LIU ; Lei REN ; Yi WANG ; Hong WANG ; Yu-Xiao ZENG ;
Chinese Journal of Trauma 2003;0(12):-
Objective To investigate the effect of intraocular injection of mixed crystalline in vivo on survival of retinal ganglion cells(RGCs)after optic nerve cut.Methods Twenty Long-Evens rats were divided into normal control,and 7 day,14 day,and 21 day groups after optic nerve was cut off.There were 5 eyes in each group.Mixed crystallin(1x10~(-4)g/L)and isotonic saline solution were injected into the vitreous of fight eye and left eye respectively.The number of RGCs was counted 7,14 and 21 days after optic nerve cut.Results The density of RGCs declined clearly 7 days after optic nerve cut.In the group with crystallin injection,the density of RGCs declined to 71%,32% and 15% of the control group repec- tively,much higher than that of the controls on days 7,14 and 21 after optic nerve was cut off(P
9.The clinical efficacy evaluation of transcatheter hardening treatment for varicose veins of lower extremity
Jun-Hui CHEN ; Yi REN ; Ping HE ; Hong-Li XIONG ; Li WANG ; Xian-Bo ZHOU ;
Chinese Journal of Radiology 2001;0(08):-
Objective To explore the clinical efficacy and safety of transcatheter absolute ethanol injection treatment on varicose veins of lower extremity.Methods twenty-there patients with 25 varicose veins of lower extremity were treated by puncture of great saphenous vein above 1—2 cm of complicated inner ankle,perforating catheter to the point below the 3—4 cm of the conjunction of great saphenous vein and Femoral vein and pressing the conjunction of these two veins.Under the monitor of DSA,inject the absolute ethenal slowly while retrieve the catheter little by little(one limb with varicose veins injected total volume 15—20 ml),in the mean time,using contrast agent to monitor the level of embolism until the formation of total embolism in the all great saphenous veins.Results All the cases were retrospectively followed up with CDFI examination after 3—12 months of the surgery,No blood flow were seen in the 25 embolismic great saphenous vein.Clinical symptom were alleviated obviously after 2—3 weeks of treatment;varicose veins were collapse after 3 to 7 days.Two eases of leg ulceration were healed after 4 to 6 weeks of operation.20 limbs were found mild swelling in the 2 day after the surgery.However,all the cases were disappeared after 1 to 2 weeks;4 treated limbs developed delayed paresthesia in the 3 day after the surgery,and recovered totally in the 2 weeks.No complications of deep vein thrombosis,lung thrombosis etc al,were found after operation.Conclusions Using transcatheter injection of absolute ethanol to treat varicose veins of lower extremity has the advantage of less invasion,more safety and low appearance of complications.The short term efficacy is solid while the long term effect needs further evaluation.
10.Research progress in the role of heterogeneous nuclear ribonucleoprotein in the central nervous system
Yi-chen, LIU ; Chang-hong, REN ; Hang-yan, WANG ; Cheng-gang, ZHANG
Bulletin of The Academy of Military Medical Sciences 2010;34(1):80-83
Heterogeneous nuclear ribonulcleoprotein(hnRNP)plays a variety of roles in pre-mRNA splicing, nuclear export of mRNA and turnover. It is reported that hnRNP not only takes part in regulating the development of neuron and glial cells, but is closely related to various central nervous system diseases. This paper reviewed the structure, function and the role of hnRNP in the central nervous system in order to provide new insight into the molecule mechanism of nervous system diseases.