Amyloid beta-Peptides ; analysis ; Animals ; Frontal Lobe ; drug effects ; physiology ; Hippocampus ; drug effects ; physiology ; Learning ; drug effects ; Memory ; drug effects ; Rats ; Rats, Wistar ; Sodium Azide ; pharmacology ; Space Perception

Objective To examine the role of noggin on the expression of nestin and glial fibrillary acidic protein (GFAP) in the hippocampus of adult rats. Methods Antisense oligodeoxynucleotide (ASODN) technique was employed to inhibit endogenous noggin expression and immunohistochemistry was used to detect the expressions of Nestin and GFAP in the hippocampus of adult rats. Results It was observed that the number of nestin and GFAP immunoreactive cells in the dentate gyrus (DG) of hippocampus was increased in adult rats treated with antisense oligodeoxynucleotide to noggin. Moreover, the number of GFAP immunoreactive cells was increased in the subventricular zone of the rats treated with antisense oligodeoxynucleotide to noggin. Conclusion The results in the present study indicates that noggin may play a role in the differentiation of neural stem cells in the adult hippocampus, and it promotes the differentiation of neural stem cells in the DG to neuronal fate.

Histocytochemistry ; methods ; Humans ; Pathology, Clinical ; methods ; Specimen Handling ; methods ; Staining and Labeling ; methods

OBJECTIVETo explore the effect of peimine on excision repair cross-complementation 1 (ERCC1) mRNA and lung resistant protein (LRP) expressions in A549/cisplatin (DDP) multidrug resistance (MDR) cell line.

METHODSLung cancer A549/DDP cells were cultured in vitro.Cells at logarithmic growth phase were divided into 4 groups, i.e., the blank control group, the DDP group, the ligustrazine group (DDP+ligustrazine), the peimine group (DDP + peimine). After 48-h drug action, ERCC1 mRNA expression was detected by RT-PCR and LRP expression detected by cell immunofluorescence.

RESULTSThere was no statistical difference in expression levels of ERCC1 mRNA and LRP between the DDP group and the blank control group (P > 0.05). Compared with the DDP group, expression levels of ERCC1 mRNA and LRP obviously decreased in the ligustrazine group and the peimine group (P < 0.05). They were obviously lower in the peimine group than in the ligustrazine group (P < 0.05).

CONCLUSIONSPeimine could reverse MDR of A549/DDP cell line. Its mechanism might be associated with down-regulating ERCC1 mRNA and LRP expression levels.

Cell Line, Tumor ; Cevanes ; pharmacology ; Cisplatin ; DNA-Binding Proteins ; genetics ; Down-Regulation ; Drug Resistance, Multiple ; Drug Resistance, Neoplasm ; drug effects ; Endonucleases ; genetics ; Humans ; Low Density Lipoprotein Receptor-Related Protein-1 ; genetics ; Lung Neoplasms ; RNA, Messenger ; metabolism

OBJECTIVETo study the protective effect of hyperoxia solution on acute lung injury caused by phosgene poisoning by observing the changes of PaO2 and malondialdehyde (MDA) contents, superoxide dismutase (SOD) activity in serum and Glutathione (GSH/GSSG) contents in lung tissues.

METHODSThe rabbits were divided into normal control group, hyperoxia solution (H0) and balance salt (BS) groups. Group HO and Group BS inhaled phosgene and the former was given intravenously hyperoxia solution (which was replaced by balance salt solution in Group BS). The content of MDA and the activity of SOD in serum were observed at different time points, the amount of GSH and GSSG in lung tissue were also measured.

RESULTS(1) The serum MDA contents increased and PaO2, SOD activity decreased significantly in Group HO and Group BS along with time increasing as compared with control group. The contents of GSH in lung tissue decreased in two groups compared with that in control group, however the contents of GSSG ascended instead. (2) At 3 and 8 h of the experiment, PaO2 of Group HO [(9.91 +/- 0.49), (9.15 +/- 0.46) mm Hg respectively] were significantly higher than those of Group BS [(9.03 +/- 0.76), (8.11 +/- 0.57) mm Hg respectively] (P < 0.01). The contents of MDA of Group HO (3.66 +/- 0.35), (5.31 +/- 0.15) micromol/L respectively] were lower than those of Group BS [(4.32 +/- 0.26), (7.4 +/- 0.33) micromol/L respectively] (P < 0.01). SOD activity in Group HO [(237.37 +/- 29.96), (208.10 +/- 18.80) NU/ml respectively] were higher than those of Group BS [(195.02 +/- 21.44), (144.87 +/- 21.26) NU/ml respectively] (P < 0.05 or P < 0.01). The content of GSSG lung tissue in Group HO (423.67 +/- 38.21) micromol/L were lower than those of Group BS (523.85 +/- 43.14) mol/L (P < 0.01). There were no significant differences in the content of GSH in lung tissues between Group HO and group BS.

CONCLUSIONHyperoxia solution can reduce acute lung injury of rabbits following phosgene poisoning.

Acute Lung Injury ; etiology ; metabolism ; pathology ; Animals ; Glutathione Peroxidase ; metabolism ; Hyperoxia ; Lung ; drug effects ; metabolism ; pathology ; Malondialdehyde ; analysis ; Oxygen ; administration & dosage ; pharmacology ; Phosgene ; poisoning ; Rabbits ; Superoxide Dismutase ; metabolism

To investigate the feasibility to produce crocetin in tobacco plants.The coding region of zeaxanthin cleavage dioxygenase (CSzCD) gene from Crocus sativus L. was inserted into the downstream of the cauliflower mosaic virus (CaMV) 35S promoter of a binary vector pBI121, and integrated into the genome of Nicotiana tabacum L. Twenty-one transgenic lines were identified by genomic southern blotting analysis. Western blotting and HPLC analysis of the leaf extracts of transgenic tobacco showed that crocetin was produced in CSzCD gene-transformed plants, while no crocetin was found in the untransformed tobacco.

AlM: To explore the different ages of congenital nasolacrimal duct obstruction in infants, take different treatment methods at different times.
METHODS:The 87 cases of 102 children were divided into three different age groups: the first group of 25d-3mo of age 21 cases 26 eyes; The second group >3mo-7mo 31 cases 36 eyes;The third group >7-24mo of age 35 cases 40 eyes. For the first group of infants, the implementation of the lacrimal sac nasolacrimal duct massage + eye drops; for the second group of infants, carry lacrimal pressure washing treatment; for the third group of infants, the implementation of the nasolacrimal duct probing treatment.
RESULTS: The first group of children through the nasolacrimal duct sac massage + drops tobramycin eye drops treatment unobstructed 12, the cure rate was 46. 2%;The second group of children through pressurized irrigation treatment lacrimal patency by 33, the cure rate was 91. 7%; The third group of children through the nasolacrimal duct probing unobstructed 36 treatment, the cure rate was 90. 0%. The second and third group were better than the first group (χ2=15. 71, P<0. 01;χ2=15. 27, P<0. 01);the treatment effect of the second and third groups was no significant difference (χ2=0. 02, P>0. 05).
CONCLUSlON:lnfants with congenital nasolacrimal duct obstruction should distinguish between ages, taking different treatments, in order to obtain a better therapeutic effect, and lacrimal pressure washing is the preferred way of treating infants with congenital nasolacrimal duct obstruction.

Objective To evaluate the clinical value of contrast-enhanced ultrasound (CEUS) in preoperative diagnosis of anal fistula. Methods Forty-five patients with fistula in ano were evaluated by physical examination, then CEUS were peformed by injecting SonoVue through the external opening to enhance the detection of the fistulous track and the internal opening. The results of CEUS were matched with surgical features to establish their accuracy in preoperative assessment of anal fistula. Results Simple typing fistula was found in 19 of 45 patients and 26 patients had complex fistulas. The accurate diagnostic rates by conventional ultrasound of simple typing fistula and complex fistulas were 89. 5% and 61.5%,respectively,the accurate diagnostic rates by CEUS of simple typing fistula and complex fistulas were 94. 7% and 92.3%, respectively, there was no significant difference between conventional ultrasound and CEUS about simple typing fistula( P ＞0.05), and there was significant difference about complex fistulas ( P ＜0. 05). Conclusions CEUS has a good visibility and accurate rate for diagnosis of anal fistula,It plays an important role for operation.

AIM To investigate the correlations between antioxidant activities and contents of total flavonoids and total phenols of chloroform,ethyl acetate,n-butanol and ethanol extracts from Nervilia fordii (Hance) Schltr..METHODS The contents of total flavonoids and total phenols in four extracts from N.fordii were determined by AlCl3-HAc-NaAc coloration method and Folin-Ciocalteu colorimetric method,respectively.The antioxidant activities of extracts were evaluated by determining scavenging activities of DPPH radical,hydroxyl radical and ABTS radical,together with reducing power.Then the correlations between antioxidant activities and contents of two constituents were analyzed by SPSS17.0 software.RESULTS The antioxidant activities of four extracts from N.fordii all showed dose-effect relationships,that of ethyl acetate extract was the strongest,while that of ethanol extract was the weakest.They had some correlations with the content of total flavonoids (0.604 ＜ r ＜ 0.638) and significant correlations with the content of total phenols (r ＞ 0.977).CONCLUSION Ethyl acetate extract from N.fordii can be used for the development of natural antioxidants,and the content of total phenols is the main factor to influence its antioxidant activity.

In the present study, a risperidone loaded microsphere/sucrose acetate isobutyrate (SAIB) in situ forming complex depot was designed to reduce the burst release of SAIB in situ forming depot and to continuously release risperidone for a long-term period without lagime. The model drug risperidone (Ris) was first encapsulated into microspheres and then the Ris-microspheres were embedded into SAIB depot to reduce the amount of dissolved drug in the depot. The effects of different types of microsphere matrix, including chitosan and poly(lactide-coglycolide) (PLGA), matrix/Ris ratios in microspheres and morphology of microspheres on the drug release behavior of complex depot were investigated. In comparison with the Ris-loaded SAIB depot (Ris-SAIB), the complex depot containing chitosan microspheres (in which chitosan/Ris = 1 : 1, w/w) (Ris-Cm-SAIB) decreased the burst release from 12.16% to 5.80%. However, increased drug release rate after 4 days was observed in Ris-Cm-SAIB, which was caused by the high penetration of the medium to Ris-Cm-SAIB due to the hydrophilie of chitosan. By encapsulation of risperidone in PLGA microspheres, most drugs can be prevented from dissolving in the depot and meanwhile the hydrophobic PLGA can reduce the media penetration effect on the depot. The complex depot containing PLGA microspheres (in which PLGA/ drug=4 : 2, w/w) (Ris-Pm-SAIB) showed a significant effectiveness on reducing the burst release both in vitro and in vivo whereby only 0.64% drug was released on the first day in vitro and a low AUC0-4d value [(105.2± 24.4) ng.mL-1.d] was detected over the first 4 days in vivo. In addition, drug release from Ris-Pm-SAIB can be modified by varying the morphology of microspheres. The porous PLGA microspheres could be prepared by adding medium chain triglyceride (MCT) in the organic phase which served as pore agents during the preparation of PLGA microspheres. The complex depot containing porous PLGA microspheres (which were prepared by co-encapsulation of 20% MCT) (Ris-PPm-SAIB) exhibited a slightly increased AUC0-4d of (194.6±15.8) ng.mL-1d and high plasma concentration levels from 4 to 78 days [Cs(4-78d)=(7.8±1.2) ng.mL-1]. The plasma concentration on 78 day C78d was (9.0 2.5) ng.mL-1 which was higher than that of Ris-Pm-SAIB [C78d= (1.6 ± 0.6) ng.mL-1]. In comparison with Ris-Pm-SAIB, the AUC4-78d of Ris-PPm-SAIB increased from (379.0±114.3) ng.mL-1.d to (465.0 ±149.2) ng.mL-1.d, indicating sufficient drug release from the Ris-PPm-SAIB. These results demonstrate that the risperidone loaded porous PLGA microsphere/SAIB in situ forming complex depot could not only efficiently reduce the burst release of SAIB depot both in vitro and in vivo, but also release the drug sufficiently in vivo, and be capable to continuously release the drug for 78 days.
Chitosan ; Drug Carriers ; Lactic Acid ; Microspheres ; Polyglycolic Acid ; Risperidone ; chemistry ; Sucrose ; analogs & derivatives ; Technology, Pharmaceutical