Bone Marrow Cells ; cytology ; physiology ; Humans ; Immunity ; Mesenchymal Stromal Cells ; cytology ; physiology

Objective To evaluate the effects of different doses of epidural capsaicin on pain threshold, neurological function and spinal neurons.Methods Thirty-six male New Zealand white rabbits weighing 2.5-3.0 kg were randomly divided into 4 groups (n = 9 each): control group and 3 capsaicin groups (Cap 1, 2, 3). The animals were anesthetized with 10% chloral hydrate 50-75 mg?kg-1 i.v. . An intrathecal catheter was inserted at L6,7 interspace and correct placement was confirmed by outflow of CSF. 1 ml of 0.1 % ( Cap1) , 0.25 % ( Cap2 ) or 0.5% (Cap3 ) capsaicin was injected intrathecally 24 h after IT catheter was placed. Threshold to noxious thermal stimuli was measured and gait of the hind limbs were assessed using Johnson score (5 = normal, 0 = completely paralyzed), before and 1, 3, 7, 10, 15, 20, 25, 30 days after IT injection. On the 2nd day after IT injection 3 animals were killed in each group and the lumbar segment of spinal cord (L6,7) was immediately removed for light and electron microscopic examination. Results The threshold to noxious thermal stimuli was significantly higher in the 3 capsaicin groups than in control group ( P

This article provides a brief description of systematics on Morchella ,and reviews the advances of molecular systematics on Morchella over the world.

Objective:To study the effects of smokeless tobacco extract(ST)on the proliferation and the heat shock protein 70 (HSP70)expression of human periodontal ligament cells(hPDLCs).Methods:hPDLCs were cultured in vitro and identified by im-munohistochemistry(IHC).The cells were stimulated with ST at 0.01 6 -50 g/L respectively for 24 h,the proliferation was examine by MTT assay,HSP70 expression was detected by immunehistochemical staining and Western Blot.Results:ST inhibited the prolifer-ation and increased HSP70 expression in cytoplasm and nucleus at 0.4 -50 g/L dose dependantly.Conclusion:ST may inhibit the proliferation and increase HSP70 expression of hPDLCs in a dose depandant manner.

Objective To evaluate the effect of Aiyishu injection on the cellular immunity state of body and toxic and side reaction in post-operation patients with breast cancer after chemotherapy .Methods Seventy patients with breast carcinoma at stage Ⅰ-ⅢA were randomly divided into treatment group (Aiyishu associated CAF regimen) (n=36) and control group (CAF regimen) (n=34).The activities of T cells and NK cells were examined in two groups before and after treatment,and the toxic, side reaction and living quality were also compared.Results The levels of CD3,CD4,CD8 and the ratio of CD4/CD8 and the activity of NK cells in treatment group were higher than those in control group (P

Objective To study the expressions of progesterone receptor A (PRA) and B (PRB) in breast cancer and adjacent non-malignant tissues and the correlations between their expressions and the clinical characteristics. Methods The expressions of PRA and PRB in 50 specimens of female human breast cancer and adjacent non-malignant tissues were detected by immunohistochemistry. The correlations between the expressions of PRA and PRB and the clinical characteristics were analyzed.Results PRA and PRB expressed in both the nuclei and the cytoplasma of tumor cells and epithelial cells of the acini and ducts.The percentages of PRA and PRB positive cells were 42%,42% and 52%,36% in the cancer and the adjacent non-malignant tissues,respectively,there was no significant difference.The expression of PRA was significantly correlated with the age of patient(r=-0.316 8,P

Objective: To develop adriamycin liposome (AL) , adriamycin long circulating liposome (ALCL) and adriamycin long circulating temprerature-sensitive liposome ( ALTSL) and to study their anti-tumor effects on tumor-bearing mice. Methods: The antitumor activity was observed using the tumor weight as index. The life prolongation rate of mice was calculated according to the tumor-bearing mice survival time. The tissue distribution of adriamycin was determined by HPLC method. Tumor, heart, liver and kidney tissue of the tumor-bearing mice, were sliced and prepared to observe the tissue pathology differences. Results: Compared with free adriamycin, the anti-tumor effects of ALCL and ALTSL were remarkably increased. Their tumor growth inhibitory rates were 57. 8% and 67. 0% respectively. The study of pharmacoki-netics indicated that the adriamycin concentrations were remarkably higher in tumor tissue and blood,lower in heart and lung tissue of ALCL and ALTSL groups when compared with the free ADM group; The pathology slices indicated that tumor cells in the ALTSL group with hyperthermia were mostly destroyed; the cardiac muscle cells in the ALTSL group were similar to the normal cardiac muscle. Conclusion: ALCL and ALTSL remarkably increased the adriamycin concentration on the tumor site, significantly enhanced the anti-tumor effects, decreased the side-effects (such as cytotoxicity) when compared with free ADM, they also significantly prolonged the survival time of the tumor-bearing mice.

BACKGROUND: Total flavone of ginkgo biloba(TFG) can affect on free radical, but the effect on apoptosis induced by cerebral ischemia is unclear.OBJECTIVE: To study the inhibitory effect of TFG on apoptosis induced by cerebral ischemia.DESIGN: Completely randomized controlled experimental study based on experimental animals.SETTING: Department of pharmacology in a university.MATERIALS: Totally 24 SD rats in half genders with clean grade and body mass of(250 ± 50) g, were divided into 4 groups at random: sham-operation group, model group, TFG 40 rmg/kg group and TFG 80 mg/kg group (Certificate No. 01).METHODS: This study was completed in the Department of Pharmacology,Anhui Medical University during October 2001 and January 2002. Incomplete cerebral ischemia was made by ligating bilateral common carotid arteries(CCA) in rats. The cerebral injury was evaluated by brain edema. The apoptosis was determined by terminal deoxy-nucleotidyl transforase-mediated dUTP-digoxigenin nick end-labeling(TUNEL) and transmission electron microscopy (TEM) method. The DNA fragmentation analysis was measured with the diphenylamine reagent method.MAIN OUTCOME MEASURES: Major factor: Effect of TFG on ultrastructral alteration of apoptotic cerebral cortex cells; Secondary factor: Effect of TFG on DNA fragmentation induced by cerebral ischemia.RESULTS: Ligating of bilateral CCA markedly induced apoptotic cell in cerebral cortex. TFG 80 mg/kg significantly inhibited brain edema( P ＜ 0.05 )and decreased the numbers of apoptotic cells in cortex( P ＜ 0.01 ) and improved ultrastructral alteration of apoptotic cells; TFG 40, 80 rmg/kg also inhibited the increase of DNA fragmentation induced by cerebral ischemia (P ＜0.05, P ＜0.01).CONCLUSION: TFG has inhibitory effect on ischemia-induced apoptosis of cerebral cortex and improve the ultrastructual changes of apoptosis. Moreover,TFG can relieve the occurrence of edema of ischemic brain tissue and inhibit the increase of DNA section induced by cerebral ischemia.

Objective To discuss the significance of high frequency ultrasound for diagnosis of congenital anomoly of pediatric kidneys. Methods Totally 118 patients with congenital anomoly of pediatric kidneys were examined with high frequency ultrasound,the characteristics of the images were analysed.Results Congenital anomoly kidneys had great diversity of variety in number,size,position,axial direction,abnormal vein and renal pelvis. In the 118 cases,pelvi ureteric stenosis was in 72 cases,renal duplication in 23,renal hypoplasia in 10,kidney deficit in 7,rotatory anomaly in 1,fused kidney in 1,and double renal pelvis in 4. Conclusions High frequency ultrasound is beneficial for diagnosing and differential diagnosing congenital anomoly of pediatric kidneys.

Objective To explore the effect of Notch1 signal pathway on the osteogenic differentiation in human periodontal ligament stem cells(PDLSCs) under dynamic strain.Methods PDLSCs were separated from freshly extracted teeth then identified and prolifed.Notch1 signal pathway was regulated by chemicals.Dynamic strains were applied to PDLSCs with the tension plus system.Then Notch1 signal pathway key factor Notch intracellular domain(NICD),osteoblastic related indexes alkaline phosphatase(ALP) and bone morphogenetic proteins 2 (BMP2) were detected by western blot expression.The deformation rate of stress parameters was 0 to 12%,and the frequency was 0.1 Hz.The loading time was 0 h,6 h,12 h and 24 h.Results As Notch1 signal pathway was activated,the expression of osteogenic markers ALP and BMP2 both reduced (P<0.05).On the contrary, the expression of osteogenic markers ALP and BMP2 both increased obviously (P<0.05) as Notch1 signal pathway was inhibited.Conclusion The activated Notch1 signal pathway will inhibit osteogenic differentiation of PDLSCs under dynamic tensile.