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

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

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

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 observe the effects of adiponectin on mRNA and protein expressions of connective tissue growth factor (CTGF) in hepatic stellate cells (HSCs) and the levels of procollagen type Ⅲ (PC Ⅲ) and hyaluronic acid (HA).Methods Cultured rat HSCs were treated with different concentrations of adiponectin.CTGF mRNA and protein expressions were analyzed by reverse transcription polymerase chain reaction (RT-PCR) and Western Blot.The levels of PCⅢ and HA were detected by enzymelinked immunosorbent assay (ELISA).Results Compared with the control group,the result of RT-PCR showed that the four groups had different degrees of inhibitory effect,of which group D exhibited the strongest inhibitory effect.The absorbance ratio was 1.54 ±0.18,1.21 ±0.14,0.96 ±0.10,and 0.79 ± 0.08,respectively (t =2.42,P ＜0.05;t =2.73,P ＜0.05;t =3.28,P ＜0.01;t =4.67,P ＜0.01).Western Blot also indicated that four groups had different degrees of inhibitory effect,of which D group exhibited the strongest inhibitory effect.The ratio of integral absorption was 1.54 ± 0.18,1.21 ±0.14,0.96±0.10,and 0.79 ±0.08,respectively (t =2.84,P ＜0.01;t =4.05,P ＜0.01;t =6.25,P ＜0.01;t =9.72,P ＜0.01).The levels of PCⅢ and HA secreted in culture media were also decreased.It was significantly decreased with the concentration of adiponectin increased.Conclusion Adiponectin can inhibit the levels of PC Ⅲ and HA,which may be achieved through reducing CTGF mRNA and protein expressions.

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.

Water soluble extract (WSE) is an important index for the quality evaluation of Astragali Radix (AR). In this study, the WSE of the wild AR from Shanxi province (SX) and the cultivated AR from Gansu Province (GS) were compared. The WSEs of two types of AR were determined according to the appendix of Chinese pharmacopoeia. Then the WSEs were subjected to NMR analysis, and the obtained data were analyzed using HCA, PCA, OPLS-DA, microarray analysis, and Spearman rank analysis. In addition, the Pearson correlation of differential metabolites were also calculated. The results showed that the WSE content of GS-AR (37.80%) was higher than that of SX-AR (32.13%). The main constituent of WSE was sucrose, and other 18 compounds, including amino acids, organic acids, were also detected. Multivariate analysis revealed that SX-AR contained more choline, succinic acid, citric acid, glutamate, taurine and aspartate, while GS samples contained more sucrose, arginine and fumaric acid. In addition, the Pearson correlations between different metabolites of the two types of AR also showed apparent differences. The results suggested that the WSE of two types of AR differs not only in the content, but also in the chemical compositions. Thus, the cultivation way is important to the quality ofAR. This study supplied a new method for the comparison of extract of herbal drugs.

Background and purpose:Recently, it was reported that tanshinoneⅡA (TanⅡA) could inhibit proliferation, induce differentiation and apoptosis of human cancer cells. Previous studies also indicated that TanⅡA could inhibit the migration and invasion of osteosarcoma. However, the effects of TanⅡA on the migration and invasion of gastric cancer and the mechanism remains unclear. The aim of this study was to investigate the effect of TanⅡA on gastric cancer cell SGC7901 migration and invasion of in vitro. Methods:After different concentrations (0.5, 1, 2, and 4μg/mL) of TanⅡA treatment for 24, 48, and 72 h respectively, MTT assay were developed to detect the cell proliferation of SGC7901. The wound healing assay and 3D-transwell assay were used to observe the migration and invasion of SGC7901 cells, respectively. Expression of intercellular adhesion molecule 1 (ICAM-1), matrix metalloproteinase-2 (MMP-2), matrix metalloproteinase-9 (MMP-9), and tissue inhibitor of metalloproteinase 2 (TIMP-2) mRNA and protein were measured with real-time PCR and Western blot. Results: 1, 2, and 4 μg/mL Tan ⅡA showed a dose-and time-dependent growth inhibition on SGC7901 cells. 2μg/mL TanⅡA showed a time-dependent migration inhibition of SGC7901 cells. 1, 2, and 4μg/mL TanⅡA could inhibit the invasion of SGC7901 cells. Real-time PCR and Western blot showed a reduction in expression of ICAM-1, MMP-2, and MMP-9, as well as an increase in expression of TIMP-2 (P<0.05).Conclusion:TanⅡA inhibits human gastric cancer SGC7901 cell migration and invasion in vitro. TIMP-2 upregulation and, ICAM-1, MMP-2, MMP-9 downregulation might be one of the mechanisms of anti-tumor of TanⅡA.

Objective To investigate the role of hydroxyapatite nanoparticle (nHAP) in the gene transfection of human colorectal cancer cell line SW480/M5 and the possible mechanisms.Methods The combination and protection of nHAP-Mg2+ to DNA were analyzed by gelose gelatin electrophoresis.Liposome and nHAP modified by magnesium chloride was combined,and the PEGFP-N1 plasmids were transfected into SW480/M5 cells.The gene transfection rate and the mean fluorescence intensity were observed by flow cytometry.The effect of nHAP-Mg2+ on the growth of the cells were studied by MTT.Results At appropriate proportion,nHAP-Mg2+ could combine the plasmids compeletly and protected the DNA.The gene could not be transferred by nHAP-Mg2+ alone.Combining the nanoparticles and liposome,the gene could be transferred very efficiently and the transfection rates were significantly higher than the liposome (P ＜ 0.05).The inhibition of cell growth was increased along with the concentration of nHAP-Mg2+ wether it was used alone or with the combination of liposome (P ＜ 0.05).Conclusions nHAP-Mg2+ has the ability to combining and protecting DNA and can be used to transfer gene as the adjunct carrier of liposome for the gene therapy of tumor cells to elevate the gene tansfection and expression rate and also enhance the anti-tumor effection.

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.