Objective To synthesize a novel vector of chitosan-particles loaded with gadolinium (Gd-CPs) and observe the adhesion and absorption of the particles in the colon wall of mice with MR imaging in-vivo.Methods Chitosan particles (CPs) with and without gadolinium loaded were synthesized with the emulsion-droplet coalescence method.Sixteen mice were randomly classified into two groups.The suspension with Gd-CPs or with CPs was infused into the rectum of the 8 mice of each group,respectively.MR scans were performed before,during and 40 minutes after infusion for each mouse.Samples of the colon correlated to the enhanced area were obtained for electron microscopy examination.Signal intensity (SI) of ROIs in the wall of rectum or colon,muscles of the pelvis near the rectum and background were measured and corresponding relative SIs were calculated.Relative SI values between the two groups and pre- and post- infusion were compared with pared t test.Results Dimension of the Gd-CPs was about 500 nm,and content rate was about 30%. Values of relative SI of the rectum for pre- and post- infusion in the Gd-CPs group were 0.84±0.06 and 0.98±0.09(t=4.327,P＜0.01),respectively,while those in CPs group were 0.83±0.04 and 0.84±0.05(t=0.658.P＞0.05). The medial value of signal increase rate for CPs group was 19.0%.Gd-CPs particles were found inside the mucosal cells under the electron microscopy.Conclusion MR imaging in-vivo can reveal the phenomenon of adhesion and absorption of mucosa targeted chitosan particle carriers. Clinical MR imaging based on small animal coil is a good method to monitor colon mucosa targeted particle vectors in-vivo.

OBJECTIVE: To discuss the characteristics and regular pattern of the adverse drug reactions(ADR) in our hospital.METHODS: A total of 314 ADR case reports collected by ADR monitoring center in our hospital during 2007 were analyzed statistically.RESULTS: 13 categories(178 kinds) of drugs and 338 cases were involved in the total 314 ADR case reports,mainly anti-infective agents(128 cases,38 kinds) and Chinese drugs preparation(51 cases,20 kinds).The ADR were manifested chiefly as lesions of skin and its appendants(134 cases) followed by gastro-intestinal lesion(56 cases).The patients showed a favorable turn and the death occurred in only 1 case.CONCLUSION: More attention should be paid to the monitoring of rational drug use to avoid or reduce the incidence of ADR.

Objective To study the expression of substance P(SP) and substance P receptor(SPR) during the development of mice brains. Methods The expression of SP and SPR during the development of mice brains from embryonic day(E) 11 to postnatal day(P) 0 days was analyzed by immunohistochemical method. Results The expression of SP began at E11 and gradually increased until birth. The expression of SPR began at E11 and maintained stable expression until birth. SP mostly expressed at striatum and SPR mostly expressed at medullary raphe.Conclusion The expression of SP and SPR during the embryo brain stage may indicate that SP could be an important factor involved in the early organization and maturation of neuron.

The ketoreductase (KR) domain in the first extending module of the polyketide synthase (PKS) catalyzes the reductions of both an α-keto group and a β-keto group in the biosynthesis of bacillaene, suggesting the intrinsic substrate promiscuity. In order to further investigate the substrate specificity, the KR domain (BacKR1) was heterologously overexpressed in Escherichia coli. In vitro enzymatic analysis showed that only one of the four diastereomers was formed in the reduction of the racemic (±)-2-methyl-3-oxopentanoyl-N-acetylcysteamine thioester catalyzed by BacKR1. In addition, BacKR1 was revealed to catalyze the reductions of cyclohexanone and p-chloroacetophenone, indicating the potential of KR domians of PKSs as biocatalysts.
Bacterial Proteins ; genetics ; metabolism ; Catalysis ; Cyclohexanones ; metabolism ; Escherichia coli ; enzymology ; Polyketide Synthases ; genetics ; metabolism ; Protein Structure, Tertiary ; Substrate Specificity ; omega-Chloroacetophenone ; metabolism

Objective To investigate the renal pathologic changes in both donors and transplant recipients with delayed graft function (DGF).Methods The clinical and laboratory data were retrospectively analyzed in 144 renal recipients with DGF.All the patients received renal biopsy,and donors' biopsy was performed on 131 recipients.The pathological changes were examined under the light microscopy (LM),immunofluorescence (IF) and electron microscopy (EM).Results (1) The incidence of DGF was 10.16%-7.48% during 1994 to 2005,and decreased to 5.35 % during 2006 to 2009.(2) Anuria occurred in 24 cases (16.67 %),oliguria in 24 (16.67%) and hypertension in 68 cases (47.22 %).The enlargement of transplanting kidney and the increased vascular resistance was detected in 79.67 % (98/123 cases) and 45.53 % (56/123 cases) respectively by ultrasound examination.(3) The level of serum creatinine was ranged from 451 to 707 μmol/L.The high level of urinary NAG enzyme was found in 102 cases (70.83 %),proteinuria in 79 recipients (54.86 %) and hematuria in 77 cases (53.47 %).(4) The acute rejection was observed in 66 cases (45.83 %),toxicity of CNI in 22 (15.28 %),IgA nephropathy in 18 (12.50 %),acute tubular necrosis in 8 (5.56 %),and recurrent FSGS in 2 cases (1.39 %).(5) In most recipients (66/109 cases,60.55 %)immunosuppressive regimen altered and renal replacement therapy was given.Conclusion The causes of DGF are complicated.The quality of donors' kidney and early histological changes of recipients are contributed to the development of DGF.It is necessary to perform renal biopsy not only in donors but also in recipients with DGF.And kidney biopsy in transplanted patients was also beneficial to the treatment.

OBJECTIVETo observe the effect of Qianliean Pill (QP) on inflammatory factors such as IL-1β, IL-10, and tumor necrosis factor α (TNF-α) in chronic nonbacterial prostatitis (CNP) model rats, and to explore its therapeutic mechanism.

METHODSCNP rat model was established by castration and estradiol benzoate injection. Totally 50 rats were randomly divided into 5 groups, i.e., the model group, the positive medicine group, the high dose QP group, the medium dose QP group, and the low dose QP group, 10 in each group. Besides, 10 normal rats were recruited as a normal control group. Since the 8th day of castration, Pulean Tablet (PT) at 10. 80 g/kg was administered to rats in the positive medicine group by gastrogavage. QP at 11.00, 5.50, and 2.75 g/kg was administered to rats in high, medium, and low dose QP groups by gastrogavage. Distilled water at 2 mL/100 g was administered to rats in the model group and the normal control group by gastrogavage, once daily for 30 successive days. After 30 days of medication all rats were sacrificed and their prostate tissues were extracted. The prostatic index was calculated. Pathological changes of rat prostate were observed under light microscope. Meanwhile, levels of IL-1β, IL-10, and TNF-α were detected using enzyme linked immunosorbent assay.

RESULTSCompared with the normal control group, the prostate index obviously decreased, levels of IL-1β, TNF-α, and IL-10 in the prostate tissue significantly increased in the model group (P < 0.01). Compared with the model group, the prostate index obviously decreased in high and medium dose QP groups, and the positive medicine group (P < 0.01); levels of IL-1β, TNF-α, and IL-10 obviously decreased in each QP group and the positive medicine group (P < 0.01). Compared with the positive medicine group, the TNF-α level decreased more obviously in the high dose QP group (P < 0.05). Compared with the normal control group, inflammatory reactions occurred obviously in rats' prostate of the model group. Compared with the model group, inflammatory reactions were milder in rats' prostate of each QP group and the positive medicine group, and their degrees were improved to some extent.

CONCLUSIONQP could treat CNP, which might be achieved by regulating local immune state of the prostate, relieving inflammatory reactions of the prostate, and lowering levels of IL-β, TNF-α, and IL-10 in the prostate tissue.

Animals ; Drugs, Chinese Herbal ; pharmacology ; therapeutic use ; Humans ; Interleukin-10 ; metabolism ; Interleukin-1beta ; metabolism ; Male ; Prostatitis ; drug therapy ; metabolism ; Rats ; Tumor Necrosis Factor-alpha ; metabolism

Objective:To evaluate the effect how Subtilisin FS33 affect thrombotic and fibrinolytic systems in vitro and in vivo. Method:Activity of Subtilisin FS33 was measured by clot liquefaction time(CLT) . On the model of 10% FeCl3 induced thrombi of carotid arteries in rats,various doses of Subtilisin FS33 were injected to the rats,and the fibrinolytic effect was observed. Results:0.5 g of the unheated blood clots gradually dissolved within 45 min,whereas the blood clots heated at 80℃ for 30 min dissolved within 3 h. This indicated that the enzyme was able to degrade blood clots in the absence of endogenous fibrinolytic factors. The experiment in vivo indicated that high dose subtilisn group could significantly prolong CT(coagulation time ) ,PT(prothrombin time) ,TT(thrombin time ) ,APTT(activated partial thromboplastin time) ,reduce ELT(euglobulin lysis time) ,decrease the content of FIB(fibrinogen) ,increase the content of FDP(fibrinogen degradation products) . D-dimer of all experimental groups waspositive. The venous thrombus in lung and kidney was dissolved totally or partly as observed by pathological section. Conclusion:Both thrombolytic effects of Subtilisin FS33 in vitro and in vivo were significant and the mechanisms might be associated with enhancing anticoagulation activity and fibrinolysis.

Objective To study the effects of amniotic epithelial cells conditioned medium on the differentiation of bone marrow stromal cells into neural cells. Methods Bone marrow stromal cells and amniotic epithelial cells were isolated and cultured in vitro,then the cell surface antigen was detected by flow cytometry and the expressions of nestin and ki67 were detected by immunofluorescence staining method.When the cells were co-cultured with amniotic epithelial cells conditioned medium,the morphological character of cells was observed by inverse phase-contrast microscope,and the expressions of NSE(neurone specific enolase),TH(tyrosine hydroxylase) and DAT(dopamine transporter) were detected by immunofluorescence staining method. Results Amniotic epithelial cells conditioned medium had obvious inductive effect on bone marrow stromal cell's neural differentiation.Conclusion The amniotic epithelial cells conditioned medium may have inductive effect neuron-like cell's differentiation and dopaminergic neuron-like cell's differentiation of bone marrow stromal cells in vitro.

Objective To investigate the effect of all-in-one nursing intervention on esophageal carcinoma patients with bad emotion and immune function. Methods From the October, 2012 to the October, 2013, 102 patients with radical operation of esophageal carcinoma were divided into all-in-one nursing intervention group (research group, 52cases) and routine nursing group (control group, 50 cases) according to the random number table method.Two groups of patients were evaluated before and after operation of anxiety and depression emotion scores, with the Self-rating Anxiety Scale (SAS) and Self-rating Depression Scale (SDS) .At the same time, two groups of patients were detected the stress and immune index before and after the operation. Results Before operation, two groups of patients with anxiety, depression, stress reaction and immune index were not significantly different (P>0.05).After operation, the study group patients with anxiety and depression scores were significantly lower than those in the control group [(34.6+6.7) points vs. (44.8+7.5) points, (33.7+6.9) points vs. (40.6+7.3) points], the difference was statistically significant (t values were 7.234, 4.902, P<0.05). Eighth days after operation, patients in the control group FBG, CRP and Cor levels were significantly higher in the study group [(6.98±1.12)mmol/L vs.(6.09±0.85)mmol/L,(18.11±5.93) mg/L vs.(9.24±3.22)mg/L,(293.98±69.09)nmol/L vs.(221.97±67.94)nmol/L],the difference was statistically significant (t values were 4.532, 9.336, 5.307, P<0.05). Eighth days after operation, two groups of patients with IgA, IgM were higher than first days after operation [(2.41±0.46)g/L vs.(1.89±0.56)g/L,(2.51±0.58) g/L vs.(1.35±0.67)g/L and (2.36±0.53)g/L vs.(1.82±0.46)g/L, (2.34±0.62)g/L vs. (1.37±0.64) g/L], the difference was statistically significant (t values were 5.174, 9.439, 5.549, 7.850, P<0.05).The total number of patients blood lymphocytes (LYM) and cytokines (CD3, CD4, CD8, CD4/CD8) were significantly higher than the control group [(2.87±0.65)×109/L vs.(1.98±0.58)×109/L, 0.62±0.10 vs. 0.57±0.07, 0.41±0.08 vs. 0.35 ±0.08, 0.24 ±0.04 vs. 0.26 ±0.05, 2.06 ±0.44 vs. 1.65 ±0.46], the difference was statistically significant (t values were 7.286, 2.915, 6.942, 2.225, 4.601, P<0.05). Conclusion All-in-one nursing intervention can significantly improve the anxiety and depression in patients with esophageal cancer in bad mood, enhance the immune function of patients, conducive to the rehabilitation of patients.