Angelica ; chemistry ; Animals ; Animals, Newborn ; Cell Count ; Female ; Fetal Hypoxia ; pathology ; Hippocampus ; cytology ; drug effects ; Male ; Neuroglia ; cytology ; Neurons ; cytology ; Pregnancy ; Rats ; Rats, Sprague-Dawley

BACKGROUND: Blood-letting puncture on 12-well points of hand is a kind of effective emergent approaches on cerebral apoplexy. It is testified in animal experiment that bleeding on 12-well points of hand can dilate cerebral vessels, enhance blood flow in brain, improve acute anoxic state in ischemic brain tissue and relieve acid toxin due to accumulation of lactate.OBJECTIVE: To explore the effects and mechanism of blood-letting puncture of 12-well points of hand nitric oxide (NO) contents and nitricoxide synthase (NOS) activity after cerebral ischemia in rats.DESIGN: Randomized controlled animal experiment was designed.SETTING: Department of Physiology of Medical Institute of Xianning College.MATERIALS: The experiment was performed in Department of Physiology of Medical Institute of Xianning College from March 2003 to February 2004. Totally 84 Wistar rats were employed in the experiment, aged of 2 or 3 months, of either sex, body weighted (230±20) g and provided from Experimental Animal Center of Medical Institute of Xianning College.METHODS: Totally 84 rats were randomized into sham operation group,ischemia group and ischemia + bleeding group, 28 rats in each one. Modified Longa method [3] was applied to prepare the model of embolism of cerebral middle artery in rat. In ischemia + bleeding group, after cerebral ischemia, blood-letting puncture was applied with three-edged needle on Shaoshang (LU11), Shangyang (LI1), Zhongchong (PC9), Guanchong (TE1),Shoochong (HT9) and Shaoze (SI1) in sequence firstly on the left foreleg,and then on the right one, corresponding to the analogy of 12-well points of hand of human. One blood drop was just required. NO content and NOS activity were assayed in 30 minutes, 1 hour, 2 hours and 4 hours of ischemia in brain tissue successively in each group.MAIN OUTCOME MEASURES: NO content and NOS activity in brain tissue in each group.RESULTS: ① NO content in 30 minutes, 1 hour, 2 hours and 4 hours of ischemia in ischemia group was (116.16±26.63), (118.94±24.47),(115.65±25.29) and (108.87±26.52) μmol/L successively and NOS ac tivity was (507.22±92.52), (502.08±92.52), (510.71±96.63) and (495.29-±88.41) μkat/L, which was higher significantly than the sham operation group (t=2.474-4.731, P ＜ 0.05 or 0.001). ② In ischemia + bleeding group,, NO content was (91.8±11.51), (93.55±13.88), (92.52±11.62) and (84.3±11.51) μmol/L successively and NOS activity was (337.6±88.41),(340.99±96.63), (344.48±84.3) and (337.6±90.46) μkat/L, indicating significant difference in comparison with ischemia group (t=2.199-3.507,P ＜ 0.05-0.01).CONCLUSION: Blood-letting puncture on 12-well points of hand inhibits the increased NO content and NOS activity in ischemic brain tissue and alleviates the injury of free radical to brain tissue so that the focal brain ischemia of rats is protected.

The influence of Chang-Bai Xin kui(长白新圭) on the acid ?-naPhthyl acetate esterase(ANAE) positive lymphocytes was studied by using ANAE as a cytochemical marker.S180 cells ef ascites tumor were inoculated into the mice in experimental and control group. 3 days later, 0.8mg/0.2ml of Chang-Bai Xin Kni was injected peritoneally into the mice in experimental group everyday in 7 days. Eaeh of the two groups has its own self control.The experimental results show that there is no significant differences in total numbar of ANAE positive lymphoctes between the two groups and all self-controls.But after 7 days of injecting the drug, the granular pattern and scattered granular pattern of lymphoctes were increased significantly(P

Objective:To investigate the feasibility of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI)parameters in differentiating musculoskeletal tumors with different behaviours of pathological findings before therapy.Methods:A total of 34 subjects of musculoskeletal tumors were in-volved in this retrospective analysis.DCE-MRI was performed using a fat-saturated 3 D VIBE (volumetric interpolated breath-hold exam)imaging sequence with following parameters:FA,10 degree;TR/TE, 5.6/2.4 ms;slice thickness,4.0 mm with no intersection gap;field of view,310 mm ×213 mm;ma-trix,256 ×178;voxel size,1 .2 mm ×1 .2 mm ×4.0 mm;parallel imaging acceleration factor.The ac-tuation time for the DCE-MRI sequence was 255 s with a temporal resolution of 5 s and 40 image vo-lumes.Using pathological results as a gold standard,tumors were divided into benign,borderline and malignant tumors.Toft’s model was used for calculation of Ktrans (volume transfer constant),Ve (extra-vascular extracellular space distribute volume per unit tissue volume)and Kep(microvascular permeability reflux constant).Those parameters were compared between the lesions and the control tissues using paired t-tests.The one-way analysis of variance was used to assess the difference among benign,border-line and malignant tumors.P values <0.05 difference was statistically significant.Results:Based on the WHO Classification of Tumours of Soft Tissue and Bone(2012)criteria,34 patients were divided into three groups:1 1 for benign tumors,12 for borderline tumors,and 1 1 for malignancies.Compared with control tissues,Ktrans and Kepshowed no difference,but Ve was increased in benign tumors,Kep showed no diffe-rence,butKtransandVewereincreasedinborderlinetumors, Ktrans,KepandVewereincreasedin malignant tumors.Ktrans(P<0.001 )and Kep (P<0.01 )were significantly higher in malignant tumors than in benign and borderline tumors,but did not show any difference between benign tumors and border-line tumors.Ve was significantly higher in malignant tumors than in benign (P<0.05),but did not show any difference between malignant and borderline tumors,benign tumors and borderline tumors (P >0.05 ).Conclusion:DCE-MRI technique is useful to evaluate the pathological behaviour of musculoske-letal tumors.The quantitative analysis of DCE parameters in conjunction with conventional MR images can improve the accuracy of musculoskeletal tumor qualitative analysis.

Objective To research the most commonly used five method to evaluated the difficulty airway , and compare which methods were more suited for the pregnant woman in general anesthesia. Methods 214 patients with full-term pregnancy who requested emergency or elective caesarean-section were assigned. During the pre-anesthetic visit,we evaluated patients from Mallampati score, thyromental distance, body mass index (BMI), inter-incisor gap, and upper lip bite test. After endotracheal intubation ,patients were divided into 2 groups based on Cormack classification. Results Five ways sensitivity descending order were upper lip bite test (79.5%)、Mallampati score (76.9%)、BMI (56.4%)、inter-incisor gap (51.3%)、thyromental distance (35.9%); specificity descending order were upper lip bite test (93.1%)、Mallampati scores (86.3%)、inter-incisor gap (85.1%)、thyromental distance (76.6%)、BMI (62.3%). Conclusions In pregnant women ,Mallampati score and the upper lip bite test are the better indicators to predict difficult airway.

Humans ; Medicine, Chinese Traditional ; methods

Angiolymphoid Hyperplasia with Eosinophilia ; pathology ; Forehead ; pathology ; Humans ; Male ; Middle Aged ; Parotid Gland ; pathology

Objective To study the expression of TGF-?1 and CTGF and the prevention effects of leflunomide in diabetic nephropathy rats,and to study the mechanism of curing DN of leflunomide.Methods Thirty-six male Wistar rats were randomly divided into three groups : control group,diabetic model group,diabetes treated with leflunomide group.After being removed the right renal of rats,diabetic model was created by injecting STZ(40mg/kg),while control group received identical volum of citrate buffer solution.When the model was established,rats in the leflunomide-treated group were daily garvage of leflunomide(5mg/kg).The same capacity saline was given to control group and diabetic model group.24-hour urine volume and 24-hour urine protein were determined after eight and twelve weeks,as well as serum creatinine and urea nitrogen.The kidney sections were studied for pathological changes with light microscopy.The expression of TGF-?1 and CTGF was determined by immunohistochemistry respectively.Results With the course extending,immunohistochemistry analysis showed that the expression of TGF-?1 and CTGF increased significantly in DN group,as compared with control group,while TGF-?1 and CTGF reduced in diabetes treated with leflunomide group(P

Objective To observe the effects of Jinghua Weikang Capsule on NF-κB p65 expression in gastric mucosa of Helicobacter pylori (Hp) infected mice;To discuss its mechanism of action. Methods Totally 44 SPF KM mice were randomly divided into blank group, model group, triple therapy group and Jinghua Weikang group. Except for the blank group, Hp infected model was set up by short term immunosuppression combined with peroral infection. The treatment strategies were triple therapy group with lansoprazole, metronidazole and clarithromycin for 1 week, Jinghua Weikang group with Jinghua Weikang volatile oil for 4 weeks, model group with sterile water for 4 weeks, and blank group free of any treatments. All the subjects were sacrificed in the 4th week after the treatment. NF-κB p65 was detected through real-time PCR and immunohistochemical method. Results The relative quantitative expressions of NF-κB p65 mRNA were 3.27±0.53 in blank group, 2.18±0.50 in control group, 4.19±1.21 in triple therapy group, and 7.70±1.41 in Jinghua Weikang group (χ2=86.303, P<0.001). Compared with model group, the expressions of NF-κB p65 mRNA of other three groups increased statistically differently (P=0.004), and there was also statistical difference between triple therapy and Jinghua Weikang group. Through immunohistochemical tests, the values of NF-κB p65 mean optical density of nucleus were 25.18± 7.42 in blank group, 31.17±2.98 in model group, 30.06±4.69 in triple therapy group, and 26.94±5.19 in Jinghua Weikang group (χ2=10.960, P=0.012). The values of NF-κB p65 mean optical density of cytoplasm had no statistical difference (F=1.922, P=0.134), and the nucleus/cytoplasm values were 0.23±0.06 in blank group, 0.28±0.03 in model group, 0.26±0.04 in triple therapy group, and 0.24±0.04 in Jinghua Weikang group (χ2=14.527, P=0.002). The statistical analysis of the nucleus/cytoplasm values showed significance between blank and model group (P=0.002), while triple therapy group was still equal to model group (P=0.420). Jinghua Weikang group was lower than model group (P=0.022) and equal to blank group (P=0.750). Conclusion Jinghua Weikang Capsule can effectively reduce the expression of NF-κB p65 in protein level in Hp infected mice.

BACKGROUND:In an additional changing magnetic field, magnetosomes can invade the tumor cells and inhibit their proliferation.OBJECTIVE: To study the effect of targeted delivery of pHSP70-shPLK1/DOX compounds with magnetosome of magnetotactic bacteria on the treatment of osteosarcoma.METHODS: Human osteosarcoma cell U2OS was divided into four groups: group A: magnetosomes of magnetotactic bacteria+pHSP70-shPLK1/DOX complex; group B: magnetosomes of magnetotactic bacteria; group C: magnetosomes of magnetotactic bacteria+pHSP70-shPLK1/DOX complex, combined with magnetic intervention; group D: magnetosomes of magnetotactic bacteria, combined with magnetic intervention. After 12, 24, 48 and 72 hours of culture, the uptake rate of osteosarcoma cells was observed; cell cycle was evaluated by flow cytometry; PLK1 mRNA and protein expression levels were detected by RT-PCR and western blot, respectively; cell proliferation was explored by MTT assay; cell adhesion and invasion were checked by adhesion assay and Transwel chamber assay, respectively; and the apoptosis rate was measured by apoptosis detection Kit.RESULTS AND CONCLUSION: (1) After culture of 12 and 24 hours, the uptake rate was the highest in group D; meanwhile, the uptake rate was the highest in group B after 48 and 72 hours of culture. (2) The ratio of G2/M phase decreased and the ratio of G0/G1 increased gradualy in group A, group C and group D; the G2/M phase ratio of C group was the lowest at each time point, followed by group D, and that of group A was the highest; and the G2/M phase ratio increased gradualy in group B. (3) Folowing 12 and 24 hours of culture, the expression of PLK1 in group B and group D was higher than that in group A and group C (P < 0.05); in addition, the expression of PLK1 in group B was higher than that in the other three groups after 48 and 72 hours of culture (P < 0.05), and the PLK1 level in group D was higher than that in group A and group C (P < 0.05). (4) The proliferation, adhesion and invasion ability in group B were the highest at different time points, but the apoptosis rate was the lowest. Furthermore, the proliferation, adhesion and invasion abilities in group C were the lowest at different time points, and the apoptosis rate was the highest. To conclude, our experimental results show that the targeted delivery of pHSP70-shPLK1/DOX complex by magnetosomes of magnetotactic bacteria can enhance the apoptosis of osteosarcoma cells and inhibit their proliferation and invasion.