Objective To study the effect of methylprednisolone therapy assisted by direct current field to treat spinal rord injury.Methods In order to make up for the defect that the direct current field could tiol reduce or remove spinal-cord edema,methylprednisolone was used 2 hours after spinal-cord injury.24 Chinese dogs wore randomly divided into two groups.Their spinal cords were made completely injured with Allen method.In Group A the electric stimulator was put into the body directly 6 hours after the spinal cord injury,while in Group B a large dose of rneuiylprednisolone was first injected 2 hours after thf spinal cord injury and then the electric stimulator was put into the body 6 hours after the spinal cord injury.In both groups the nerve function,cortical somatosensory evoked potential and three kinds uf morphometric changes were observed at 1,2,and 3 months after the injury.Results All the indexes mentioned above in Group B were much better than those in Group A.The differences between the two groups were statistically significant.Conclusion The direct current field can promote spinul curd regeneration effectively.A large dose of methylprednisolone assisted by direct current field has synergislic effects in treatment of spinal cord injury,especially in accelerating neurological functional recovery.

Objective:To observe the effect of Lingshao-Zaoren Decoction on urodynamics and the expression of Piezo1 if overactive bladder (OAB) rats. Methods:Thirty SPF grade female SD rats were randomly divided into blank group, model group, Tolterodine control group, low-dose and high-dose Lingshao-Zaoren Decoction groups, with 6 rats in each group. The OAB rats were modeled by intraperitoneal injection of Cyclophosphamide. After the successful modeling, Tolterodine control group was given 0.36 mg/kg Tolterodine tartrate, the low-dose and high-dose Lingshao-Zaoren Decoction groups were given 1.59 and 3.18 g/kg Lingshao-Zaoren Mianjian granules by gavage, the blank group and model group were given the same amount of distilled water, once a day for 14 days. After 14 days, the urodynamics of rats in each group were detected. The bladder volume and maximum bladder pressure were observed respectively. The pathological changes of bladder tissue were observed by HE staining. The expression of Piezo1 protein in bladder tissue was detected by immunohistochemistry and Western blot. The expression of Piezo1 mRNA in bladder tissue was detected by qPCR. Results:Compared with the blank group, the body weight, bladder volume and maximum bladder pressure of the model group were significantly reduced ( P<0.01). HE staining result showed that the model group had hyperplasia of urinary tract epithelium, degeneration, necrosis and abscission of epithelial cells, infiltration of a large number of inflammatory cells in stroma, vascular proliferation, thickening of vascular wall, hyperplasia of mucosal smooth muscle, disorder of arrangement, and significant up regulation of Piezo1 protein expression ( P<0.01). Compared with the model group, the weight [(244.83 ± 6.05) g, (233.33 ± 11.76) g vs. (219.00 ± 9.70) g] of rats in the Tolterodine control group and high-dose group of Lingshao-Zaoren Decoction significantly increased ( P<0.01), and the bladder volume [(0.93 ± 0.31) ml, (1.17 ± 0.17) ml, (1.21 ± 0.23) ml vs. (0.50 ± 0.16) ml] and maximum bladder pressure [(42.00 ± 3.03) cmH 2O, (45.83 ± 7.19) cmH 2O, (46.83 ± 8.23) cmH 2O vs. (30.50 ± 5.47) cmH 2O] of rats in the Tolterodine control group, low-dose and high-dose Lingshao-Zaoren Decoction groups were significantly increased ( P<0.01); the bladder epithelial hyperplasia and degeneration degree, interstitial inflammatory cell infiltration degree and vascular hyperplasia degree of rats in the Tolterodine control group, low-dose and high-dose Lingshao-Zaoren Decoction groups significantly increased. The expression of Piezo1 mRNA (1.50 ± 0.04, 2.05 ± 0.08, 1.44 ± 0.10 vs. 2.56 ± 0.11) and protein in the Tolterodine control group, low-dose and high-dose Lingshao-Zaoren Decoction groups were significantly decreased ( P<0.01). Conclusion:Lingshao-Zaoren Decoction can increase the bladder volume and maximum bladder pressure of urinary incontinence caused by detrusor overactivity in rats with overactive bladder, which may be related to reduction of Piezo1 expression.

Background: Isolated systolic hypertension (ISH) is a common disease in elderly people, threatening their health. Traditional Chinese medicine (TCM) treatment or integrative treatment had advantages in improving quality of life and protecting target organs, but need to be proved by large evidence-based researches. Objective: To observe the effects of TCM treatment (Jiangya Capsule) or integrative treatment (combination of Jiangya Capsule and nimodipine) on blood pressure and vasoactive agents, and their safety in elderly ISH patients. Design, setting, participants and interventions: A multicenter, randomized, double-blind controlled trial was adopted. A total of 270 elderly ISH patients recruited from Xiyuan Hospital, and TCM Hospital and Community Health Service Centers of Yanqing County of Beijing were randomly divided into 3 groups: TCM group (Jiangya Capsule plus nimodipine simulation, 90 cases), integrative group (Jiangya Capsule plus nimodipine, 90 cases) and Western medicine (WM) group (nimodipine plus Jiangya Capsule simulation, 90 cases). They were all treated for 4 weeks. Main outcome measures: Before and after 4-week treatment, office blood pressure, 24-hour ambulatory blood pressure, serum nitric oxide (NO), and plasma endothelin-1 (ET-1), thromboxane B2 (TXB2) and 6-keto-prostaglandin 1alpha (6-keto-PGF1alpha) were detected, and safety evaluation was conducted. Results: After 4-week treatment, 5 patients in TCM group were lost to follow-up and another 5 patients were excluded, and 80 patients finished the trial; 7 patients in integrative group were lost to follow-up and another 7 patients were excluded, and 76 patients finished the trial; 2 patients in WM group were lost to follow-up and another 3 patients were excluded, and 85 patients finished the trial. After treatment, systolic blood pressure (SBP) decreased in each group (P<0.05), and integrative treatment was superior to TCM or WM treatment in decreasing SBP (P<0.05). Twenty-four hour average SBP and day average SBP decreased significantly in each group, and night average SBP decreased in integrative group, and integrative treatment was superior to TCM or WM treatment in decreasing day average SBP. Serum NO and plasma 6-keto-PGF1alpha levels were elevated and plasma ET-1 and TXB(2) levels were reduced after treatment, and integrative treatment was superior to TCM or WM treatment in reducing plasma TXB(2) level. Conclusion: TCM treatment or integrative treatment has affirmative effects and safety in treating elderly ISH patients, and integrative treatment has superiority in improving some indexes, and deserves further study.

ObjectiveTo screen and establish animal models of combined stasis and toxin syndrome based on the comparison of three modeling methods， i.e.， carrageenan （Ca）， Ca combined with dried yeast （Ca+Yeast）， and Ca combined with lipopolysaccharide （Ca+LPS）. MethodForty SPF male SD rats were randomly divided into normal group， Ca group， Ca+Yeast group， and Ca+LPS group， with 10 rats in each group. The Ca group， Ca+Yeast group， and Ca+LPS group received an intraperitoneal injection of Ca （10 mg·kg^-1） on the first day. The Ca+LPS group received an intraperitoneal injection of LPS （50 μg·kg^-1） on the second day， and the Ca+Yeast group received a subcutaneous injection of dry yeast suspension （2 mg·kg^-1） on the back on the second day. The rectal temperature of each group was dynamically observed after modeling. After 24 hours of modeling， the macroscopic evaluation indexes， including tongue manifestation， pulse， and black tail length in each group were observed. The PeriCam PSI imaging system was used to detect the blood flow perfusion of the rat tail. The automatic hemorheology analyzer was used to measure the whole blood viscosity and plasma viscosity of each group. The PL platelet function analyzer was used to detect the platelet aggregation rate of the rats. The enzyme-linked immunosorbent assay （ELISA） was used to detect the interleukin-6 （IL-6） level in the rat plasma. The myocardial tissue， brain tissue， and lung tissue of each group of rats were observed by hematoxylin-eosin （HE） staining. ResultCompared with the normal group， all three model groups showed varying degrees of black tail （P<0.05， P<0.01）， reduced blood flow perfusion at the tail end （P<0.05， P<0.01）， decreased R， G， and B values of tongue manifestation （P<0.05， P<0.01）， and increased maximum platelet aggregation rate （P<0.05， P<0.01）. The pulse amplitudes of the Ca+Yeast group and the Ca+LPS group were lower than that of the normal group （P<0.05， P<0.01）. In addition， the average rectal temperature of the Ca+Yeast group increased after 24 hours of modeling （P<0.01）， and the low-， medium-， and high-shear whole blood viscosity and plasma viscosity increased （P<0.05， P<0.01） as compared with those in the normal group. Additionally， the expression level of the plasma inflammatory factor IL-6 was significantly up-regulated （P<0.05）. Pathological morphology results showed that the Ca+Yeast group had the most severe pathological changes， with small foci of myocardial fiber dissolution， inflammatory cell infiltration， and fibroblast proliferation observed. In the hippocampal area， the neurons were sparse and had undergone red degeneration. In the small focus of the lung interstitium， lymphocytes and neutrophils were infiltrated. ConclusionThe animal model of combined stasis and toxin syndrome was properly established using Ca+Yeast. The systematic evaluation system of the model， which includes traditional Chinese medicine four diagnostic information， western medicine microscopic indicators， and tissue pathological morphology， is worthy of consideration and reference by researchers.