1.A Charcot-Marie-Tooth disease resembling to chronic inflammatory demyelinating polyradiculoneuropathy:a report of two cases
Yi WANG ; Kai QIAO ; Chuan-Zhen LV ;
Chinese Journal of Neurology 2005;0(07):-
Objective To observe the clinical, neuropathogical, neurophysiological characteristics of Charcot-Marie-Tooth disease, type 1A (CMT1A) which was similar to chronic inflammatory demyelinating polyradiculoneuropathy(CIDP).Methods The clinical data, neuroelectrophysiological changes and pathological features of sural nerve biopsy were taken from 2 CMT1A patients who were proven to be 17p12 duplication with CIDP features, and analyzed comprehensively. Results Two CMT1A cases with classical chronic course showed both subacute course and clinical manifestations similar to CIDP, however, the changes of neuroelectrophysiology and pathological characteristics of the nerve biopsy in 2 cases were different from CIDP in some way. We confirmed the chronic inflammatory demyelinating type of the CMT1A patients whom the immunotherapy was effective on.Conclusion The classical CMT1A 17p12 duplication patients who obtained immunotherapy effects might resemble CIDP both in clinical course and manifestation.
2.A comparative study of opening the pterygopalatine arteries improved preparation of autologous blood clots in cerebral infarction model
Zhen ZHOU ; Xueyan WANG ; Kun WANG ; Kai WANG ; Yulian ZHANG
Chinese Journal of Comparative Medicine 2014;(9):62-65
Objective To open pterygopalatine artery using autologous blood clot clogged the middle cerebral artery, resulting in cerebral infarction model of middle cerebral artery in the distal blood supply area.Methods Open PPA, ligation of ECA, embolus through CCA blood flow, rushed into the MCA distal embolus, cause infarction model. According to Bederson rating score the neural function.TTC staining to determine the infarction volume.Results Comparison of two operation models, scores were increased, and white infarcted area appears.There is no significant differences detected by statistical analysis.Conclusion Open PPA manufacturing cerebral infarction model rats of autologous blood clots could shorten the operation time, reduce the mortality rate.
4.Clinical Research of Moxibustion Therapy on Gastralgia Due to Deficiency and Cold
Bin NIE ; Renhan LUO ; Xiuling CHEN ; Kai XU ; Zhen WANG
Journal of Acupuncture and Tuina Science 2011;09(2):98-100
Objective: To observe the clinical effect of moxibustion on gastralgia of deficiency cold type. Methods: Sixty patients were randomly divided into 2 groups. The 30 patients in the treatment group were treated with Zhao's thunder-fire moxibustion while the other 30 patients in the control group were treated with oral medicine. Results: After one course of treatment, the total effective rate of treatment group was notably higher than that of the control group, showing statistical significance (P<0.05). Conclusion: The total effective rate of thunder-fire moxibustion on gastralgia of deficiency cold type was better than that of the traditional Chinese medicine in relieving epigastralgia.
6.Design, synthesis and cholinesterase inhibitory activity of quinoline-polyamine conjugates.
Wen LUO ; Kai HUANG ; Zhen ZHANG ; Chen HONG ; Chaojie WANG
Acta Pharmaceutica Sinica 2013;48(2):269-75
A series of quinoline-polyamine conjugates (8a-8n) were designed, synthesized and evaluated as inhibitors of cholinesterases (ChEs). Some of these compounds had potent ChEs inhibitory activity with IC50 values at micromolar range. Compound 8n exhibited the strongest inhibition on acetylcholinesterase (AChE) with an IC50 value of 8.78 micromol x L(-1), and compound 8i showed the most potent inhibition on butyrylcholinesterase (BChE) with IC50 value of 1.60 micromol x L(-1) which was slightly better than rivastigmine. The structure-activity relationship revealed that the chain length of polyamine and linker played important roles for inhibitory activity. Molecular modeling studies showed that 8i targeted both the catalytic active site (CAS) and the peripheral anionic site (PAS) of cholinesterases.
7.Control study of regional cerebral blood flow in both effective treated and incomplete controlled patients of idiopathic generalized tonic clonic seizure
Kai-Yan WANG ; Chuan-Zhen LV ; Zhen HONG ; Xing-Dang LIU ; Min HOU ;
Chinese Journal of Neurology 2001;0(03):-
Objective To explore sub-clinical items in evaluating the prognosis of epileptic patients,the study on differences of regional cerebral blood flow (rCBF) in both effective treated and incomplete-controlled patients with idiopathic generalized tonic clonic seizure (GTCS) was carried out.Methods Interictal rCBF measurements using 99m Tc-ethyl cysteinates dimmer (ECD) SPECT was performed on 29 effective treated idiopathic GTCS patients and 12 incomplete controlled idiopathic GTCS patients. The rCBF distribution was semi-quantitatively analyzed by regions of interest (ROIs) comparing with abnormal rate of interictal hypoperfusion rCBF,clinical seizure time and EEG.Results ROI analysis showed that rCBF decreased in basal ganglia and thalamus of incomplete controlled patients with idiopathic GTCS compared to that of effective treated ones′ significantly ( P
8.Effects of oleanolic acid on learning and memory, synaptic morphology and the expression of CREB in the hippocampus and cereberal cortex of SAMP8 mice
Kun WANG ; Yulian ZHANG ; Zhen ZHOU ; Linlin ZHANG ; Wanshan SONG ; Xueyan WANG ; Kai WANG
Chinese Journal of Behavioral Medicine and Brain Science 2015;24(6):493-496
Objective To observe the influence of oleanolic acid on the ethology of 9-month-old mice,the completeness of synapsis structure and the expression of cAMP-response element binding protein (CREB) in cortex and hippocampus.Methods Thirty 9-month-old healthy male SMAP8 mice were randomly divided into model group,oleanolic acid group and aricept group,and with 10 rats in each group,while 10 healthy male mice of the same age and species as normal group.Oleanolic acid group and aricept group were given intragastric administration with corresponding drugs,while the normal group and model group were given the same amount of physiological saline.4 weeks later,the ethology changes were observed by Morris water maze and morphology changes of hippocampus neurons were viewed by electron microscope and the expression of CREB was detected by Western Blot.Results (1)Morris water maze results suggested that compared with the normal group,the latency time in the model group mice was longer,which were ((83.33±4.96) s,(75.13±6.01) s,(71.75±7.77) s,(63.40± 8.93) s,(60.97±8.38) s),while compared with the model group,the latency time in the oleanolic acid group and the aricept group was remarkably shorter (P< 0.05),which were (75.97± 4.49) s,(64.98± 4.93) s,(64.16± 6.23) s,(53.47±5.99) s,(47.91±7.64) s and (71.30±7.65) s,(63.32±7.57) s,(59.82±4.69) s,(52.28±5.90) s,(46.22±7.27) s respectively.In the spatial probe trial,compared with tbe normal group,the crossing times of the model was less,while compared with the model one,the crossing times of the oleanolic acid group and the aricept group was more(P<0.05).(2)Compared with the normal group,the number of synapses in the model group was smaller,in which the synaptic cleft was mixed with the front of synapses severely swollen,uninform synaptic vesicles and few clear outlines of mitochondrias.While the oleanolic acid group and the aricept group had clear synapses outlines with the front of synapses slightly swollen,intensive and uniform synaptic vesicles and clear mitochondrias with their cristae not easy to be seen.(3) The Western Blot showed that compared with the normal group,there was a decline in the CREB expression both in the cortex and hippocampus in the model group,while compared with the model group,there was a rise in the oleanolic acid group as well as the aricept group(P<0.05).Conclusion Oleanolic acid can improve the learning and memorizing of model rats,which is possibly related to the increased expression of CREB protein to protect the synapses structure of model mice.
9.Effects of citalopram on electrophysiological properties of cardiac myocytes
kai-li, WANG ; ci-zhen, LI ; zhi-fang, YANG ; yuan-mou, LIU ; hong-wei, WANG
Journal of Shanghai Jiaotong University(Medical Science) 2006;0(08):-
Objective To investigate the influence of citalopram on the fast response action potential,slow response action potential,in vitro electrocardiogram(ECG) and in vivo ECG of cardiac myocytes,and explore its mechanism of adverse cardiac effects. Methods Conventional microelectrode technique was employed to record the fast and slow response action potentials of the isolated papillary muscles of guinea pigs.In vivo and in vitro ECG were recorded from anesthetized animals and Langendorff-perfused hearts,respectively. Results Citalopram could prolong the RR interval and QRS duration of in vivo ECG.The premature ventricular contraction and atrial ventricular block were induced by 12.5?10-6 mol/L citalopram.The maximum ascending velocity of 0 phase(Vmax),action potential amplitude(APA) and action potential duration(APD50 and APD90) were dose-dependently decreased by citalopram in the fast and slow response action potentials of guinea pigs,respectively. Conclusion Citalopram can inhibit sodium and calcium channels effectively,which may be the ionic mechanism that citalopram induces arrhythmia in the clinical practice.
10.Preparation of rivastigmine liposome and its pharmacokinetics in rats after intranasal administration.
Zhen-Zhen YANG ; Zhan-Zhang WANG ; Kai WU ; Xian-Rong QI
Acta Pharmaceutica Sinica 2011;46(7):859-863
To prepare rivastigmine liposome, rivastigmine was loaded into liposome via ammonium sulfate gradient method. Its pharmacokinetic profile in rats was evaluated after intranasal administration. The size, zeta potential, entrapped efficiency and release of rivastigmine from the liposome in vitro were determined. Plasma concentration of rivastigmine was determined by high performance liquid chromatography-tandem mass spectrometry (HPLC/MS) using antipyrine as internal standard. The pharmacokinetic parameters were calculated by DAS 2.0. The entrapped efficiency of rivastigmine liposome was (33.41 +/- 6.58) %, with the mean diameter of 154-236 nm and zeta potential of (-10.47 +/- 2.41) mV. The release behavior of rivastigmine was fitting the first order equation in vitro. The pharmacokinetic studies indicated that the C(max), T(max) and AUC(0-infinity), of rivastigmine liposome were (1.50 +/- 0.15) mg x L(-1), 15 min and (89.06 +/- 8.30) mg x L(-') x min, respectively. Rivastimine liposome was absorbed rapidly, and could reach a certain concentration in rat plasma after intranasal delivery.
Administration, Intranasal
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Animals
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Area Under Curve
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Chromatography, Liquid
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Drug Carriers
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Drug Compounding
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Liposomes
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Male
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Neuroprotective Agents
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administration & dosage
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blood
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chemistry
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pharmacokinetics
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Particle Size
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Phenylcarbamates
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administration & dosage
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blood
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chemistry
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pharmacokinetics
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Rats
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Rats, Sprague-Dawley
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Rivastigmine
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Tandem Mass Spectrometry