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Objective: To observe the effect of electroacupuncture (EA) of "concurrent treatment of the brain and heart" on angiogenesis and cortical vascular endothelial growth factor (VEGF) and brain-derived neurotrophic factor (BDNF) in rats with focal cerebral ischemia, and to explore the mechanism of EA in cerebral ischemia treatment. Methods: A total of 108 Sprague-Dawley rats, 27 rats were randomly selected as the sham-operation group, and the rest rats received the right middle cerebral artery occlusion operation for model preparation firstly, and then were divided into a model group, a traditional acupoint group, and a concurrent treatment of the brain and heart group, with 27 rats in each group. In the sham-operation group, only the carotid artery was isolated. EA at Shuigou (CV26), Quchi (LI11), Hegu (LI4), and Zusanli (ST36) in the traditional acupoint group, and EA at Fengfu (GV16), Baihui (GV20), Xinshu (BL15), and Neiguan (PC6) in the concurrent treatment of the brain and heart group were performed 4 h after the operation, once a day, for 14 consecutive days. Rats in the sham-operation group and the model group were identically fixed without any treatment. Before and after treatment, the modified neurological severity score (mNSS), regional cerebral blood flow (rCBF), and CD34 positive expression by immunohistochemistry were measured. The positive protein expression levels of VEGF and BDNF were detected by immunofluorescence, and the mRNA expression levels of VEGF and BDNF were detected by quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Results: Compared with the sham-operation group, the mNSS, rCBF, and ischemic side cortical micro-vessel density (MVD) decreased, and the protein and mRNA expression levels of VEGF and BDNF increased in the model group (P<0.01). Compared with the model group, the mNSS of the two EA groups decreased, and the mNSS of the concurrent treatment of the brain and heart group was lower than that of the traditional acupoint group on the 14th day (P<0.05). Compared with the model group, the rCBF in the two EA groups increased, and the rCBF reached the highest on the 14th day (P<0.05 or P<0.01), and the rCBF in the concurrent treatment of the brain and heart group was higher than that in the traditional acupoint group (P<0.05); the MVD of the two EA groups was higher than that of the model group, and the MVD of the concurrent treatment of the brain and heart group was higher than that of the traditional acupoint group on the 7th and 14th days (P<0.05 or P<0.01). Compared with the model group, the protein and mRNA expression levels of VEGF and BDNF in the two EA groups increased (P<0.01). The VEGF expression level was the highest on the 7th day in the concurrent treatment of the brain and heart group (P<0.05), and the BDNF expression level was higher on the 7th and 14th days than on the 3rd day (P<0.05). The mRNA expression levels of VEGF and BDNF in both EA groups reached the highest on the 7th day (P<0.05 or P<0.01). Conclusion: EA therapy can up-regulate the VEGF and BDNF expression levels and increase the rCBF in the cortex of rats with focal cerebral ischemia, which may be one mechanism of EA in the cerebral ischemia treatment. The therapeutic effect is accumulated with the effective time, and the concurrent treatment of the brain and heart group is superior to the traditional acupoint group in promoting angiogenesis.
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Objective To develop a simple,rapid and accurate analysis method for determination of L-corydalmine(L-CDL) in rat plasma. Methods The plasma sample was determined with propranolol as the internal standard(IS),the separation was ac?complished in a Capcell PAK C18(2.1 mm×750 mm,3μm)column,and the mobile phase consisted of water( including 0.1%formic acid and 5 mmol/L ammonium formate)and acetonitrile(including 0.1%formic acid)at a flow rate of 0.25 ml/min. The mass spec?trometer consisted of an ESI interface operating at positive ionization mode and the detection was performed using multiple reaction monitoring(MRM)at the transitions of m/z 342?192.1 for L-CDL and m/z 260?116.2 for propranolol. Method validation included the evaluation of the linearity range,lower LOQ,within-run and between-run precision,accuracy and stability,matrix effect and extrac?tion recovery. Results The calibration curve was linear across the concentration range of 1-5000 ng/ml for L-CDL with a lower LOQ of 1 ng/ml. The within-run and between-run precision(RSD%)was in the range 0.1%-10%. The extraction recovery was in 93.5%-102.8%and the matrix effect for three QC was 108.3%-112.5%. L-CDL reached the peak concentration at 0.5 h after dosing. The main pharmacokinetic parameters of rats after igl administration were as follows:T1/2:(7.04 ± 3.93)h,Cmax:(557.8 ± 330.1)ng/ml,AUC0~24:(2408±630)h·ng/ml. Conclusion A simple,rapid,accurate,high sensitivity and repeatability method has been successfully devel?oped,which can analyze the concentration of L-CDL in rat plasma. The method can be used for the investigation of pharmacokinetics of L-CDL in rats.
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Aim To study the antipsychotic effects of l-Scoulerine ( l-SLR) . Methods NMDAreceptorantag-onist MK-801 was used to induce the positive and neg-ative symptoms of schizophrenia and cognitive impair-ment in animal models. The effects of l-SLR were eval-uated on schizophrenia induced by MK-801 and on ex-trapyramidal system. Results l-SLR (10,15 mg · kg - 1 , ip) could suppress pre-pulse inhibition damage in rats induced by MK-801 (0. 3 mg·kg - 1 , ip); l-SLR(30 mg·kg - 1 , ip) could inhibit climbing behav-iors in mice induced by apomorphine, which suggested that l-SLR had significant inhibiting effects on the posi-tive symptoms of schizophrenia by MK-801 and apo-morphine. l-SLR could also induce social contact inhi-bition and cognitive impairment induced by MK-801 (0. 2 mg · kg - 1 , ip), which proposed that l-SLR could improve the negative symptoms and cognitive im-pairment by MK-801. Catalepsy in mice could be caused by the treatment dose of haloperidol (0. 8 mg· kg - 1 , ip), not by that of l-SLR(30 mg·kg - 1 , ip). Conclusion I-SLR has significant effects on the posi-tive and negative symptoms of schizophrenia and cogni-tive impairment and, the effect of l-SLR under effective dose on extrapyramidal system is obviously much less than that of haloperidol and l-SPD.
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Objective To evaluate the clinical efficacy of Yangyin Yiqi mixture and western medicine in the treatment of oral lichen planus(OLP)and its effect on the levels of interferon -γ(IFN -γ)and interleukine -10 (IL -10)in serum and saliva.Methods Sixty patients with OLP were randomly divided into control group(n =30) and treatment group(n =30).The control group was treated with triamcinolone acetonide and lidocaine,local injec-tion.The treatment group was treated with Yangyin Yiqi mixture on the basis of the control group.The treatment lasted two months.After treatment,the clinical efficacy,objective indicators score,levels of IFN -γand IL -10 in serum and saliva,adverse reactions were compared between the two groups.Results The overall response rate of the treatment group (86.67%)was significantly higher than that of the control group (63.33%)(χ2 =11.64,P <0.01).After treatment,the two groups'objective index score significantly reduced(t =8.52,12.51,all P <0.01),and the treat-ment group's objective indicators rating was significantly lower than the control group (t =4.38,P <0.05).After treatment,the levels of IFN -γin serum and saliva were (25.39 ±1.29)pg/mL and (12.76 ±1.28)pg/mL,which were significantly increased in the treatment group (t =10.35,8.15,all P <0.01),so did the control group (P <0.05).And the levels of IL -10 in serum and saliva were (27.54 ±1.82)pg/mL and (9.92 ±0.86)pg/mL,and the levels were significantly decreased in the two groups after treatment (t =8.76,9.39,all P <0.01,t =4.65,4.94,all P <0.05).And levels of IFN -γin serum and saliva of the treatment group were significantly higher than those of the control group (t =4.68,4.32,all P <0.05),and levels of IL -10 in serum and saliva of the treatment group were significantly lower than those of the control group (t =5.41,5.25,all P <0.05).During treatment,there were no sig-nificant adverse reactions.Conclusion Yangyin Yiqi mixture combined with western medicine has definitive clinical efficacy in the treatment of OLP.It can significantly increase the level of IFN -γand reduce the level of IL -10 in serum and saliva in patients,so provide theory value for treatment of OLP.
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PurposeTo probe into the feasibility of small field of view intravoxel incoherent motion (IVIM) MRI in the grading of cervical cancer before surgery.Materials and Methods Twenty-three patients with cervical cancer confirmed pathologically underwent preoperative conventional MRI and IVIM sequence scan [IVIM sequence included 10 b value (0-1500 s/mm2)]. Based on postoperative pathological cell morphology the patients were divided into well differentiated group (10 cases) and moderately or poorly differentiated group (13 cases). Then the parameters such as the ADC standard, D value, D* value and f value were calculated in each group according to double exponential function analysis. The data in the two groups were compared and nonparametric test to see whether they had normal distribution.Results Compared with the well differentiated group, the moderately or poorly differentiated group had statistically lower ADC standard value and D value (t=140.5 and 129.5,P0.05).Conclusion Small field of view IVIM MRI is feasible in predicting the differentiation of tumor in the preoperative grading of cervical cancer.