OBJECTIVE: To investigate the stability of 0.5% glutaraldehyde solution. METHODS: Classic constant temperature accelerated test method and sample observation method were applied with the content of glutaraldehyde as index. The content of glutaraldehyde was determined by titration which was determined by titration. RESULTS: The content change of 0.5% glutaraldehyde solution was in line with the first order kinetics, and the results of both methods were similar. The validity duration of 0.5% glutaraldehyde solution was 85.7 days at room temperature (25 ℃). CONCLUSION: 0.5% glutaraldehyde solution should be used up as soon as possible and the perfect time is less than 2 week.

BACKGROUND: Present studies have verified that Baicalin has protective effects on various brain damage in the nervous system.OBJECTIVE: To study the possibility of intravenous transplantation of human umbilical blood mesenchymal stem cells (hUBMSCs) and Baicalin after hypoxic-ischemic brain damage (HIBD) in neonatal rats.DESIGN, TIME AND SETTING: The randomized controlled animal study was performed at the Laboratory of the Department of Neurology, First Affiliated Hospital, Nanchang University from February 2007 to January 2008.MATERIALS: Totally 10 umbilical blood samples from healthy full-term pregnant women were obtained from the Department of Obstetrics, First Affiliated Hospital, Nanchang University. A total of 85 clean Sprague Dawley neonatal rats aged 7 days were randomly assigned to a normal control group (n=15), a model group (n =20), a cell transplantation group (n =25), a cell transplantation + Baicalin group (n =25).METHODS: The umbilical blood mononuclear cells were isolated by the gelatin sedimentation + density gradient centrifugation method, and amplified in vitro. Cells at the fifth passage were used for transplantation. Cells were labeled by DAPI at 6-12 hours before use. Neonatal rats in the model, cell transplantation and cell transplantation + Baicalin groups were used to establish HIBD models. Rats in the blank control group were left intact. At 2, 3,4, 5 weeks following model induction, rats in the cell transplantation and cell transplantation + Baicalin groups were injected with DAPI-labeled hUBMSCs (5-10 μL/g) via caudal vein at the density of 1 ×10~9/L. From the first day of transplantation, rats in the cell transplantation + Baicalin group were injected with 120 mg/kg Baicalin via intraperitoneal injection, once a day, for three successive days.MAIN OUTCOME MEASURES: The following parameters were measured: brain tissue lesion, DAPI-positive cell number, location of hUBMSCs following transplantation.RESULTS: Lesion rate of brain tissue was significantly lower in the cell transplantation + Baicalin group compared with the model and cell transplantation groups at 4 weeks following transplantation (P < 0.05). Compared with the cell transplantation group,DAPI-positive cell number was significantly increased in the cell transplantation + Baicalin group at 1, 2, 4 weeks (P < 0.01). From the 3~(rd) week following model induction, abundant DAPI-labeled cells were found surrounding the lesion site, without obvious boundary integrated with the host brain. Few DAPI-positive hUBMSCs were found in non-ischemic region. At 4 and 5 weeks following model induction, DAPI-positive cells were significantly decreased in the lesion site.CONCLUSION: The third week following HIBD is an optimal time for cell transplantation. Baicalin can make a large number of hUBMSCs across the blood-brain barrier to distribute and scatter around the disease focus integrated with host brain tissue.

Objective To compare the diagnostic efficiency of superb microvascular imaging (SMI) and contrast-enhanced ultrasonographic microvascular imaging (MVI) for differentiating breast lesions.Methods One hundred and sixteen patients with 116 breast lesions were first examined by grayscale ultrasound.Then SMI and MVI were performed on all patients.Microvascular architectures of breast lesions were depicted by both methods.The lesions were evaluated based on their microvascular architectures.The diagnostic efficacy of both methods were compared.Results The diagnostic sensitivity,specificity,and accuracy of SMI and MVI were 79.24％,90.48 ％,85.35％ and 88.68％,87.30％,87.93％,respectively.The areas under the curve of SMI and MVI were 0.888 and 0.926.The diagnostic values of SMI and MVI were not statistically different (P =0.212).Conclusions SMI can detect tiny vessels and depict microvascular architecture of breast lesions as MVI do,which is beneficial for breast tumor differentiation.The diagnostic efficacy of SMI is almost the same as MVI.

Objective:To explore the influence of continuous care on cognitive function and quality of life of AD patients.Methods:A total of 76 patients with AD admitted to our hospital from January 2019 to January 2020 were prospectively selected and randomly divided into 2 groups by simple number random table method. The control group (38 cases) received routine nursing care and the observation group (38 cases) received continuous nursing care based on routine nursing. Mini-mental State Examination (MMSE), Quality of Life-Alzheimer′s Disease (QOL-AD), Barthel Index (BI) and Activity of Daily Living scale (ADL) scores were compared between the two groups.Results:The MMSE score of the observation group before nursing was 11.26±1.40, 11.28±1.35 in the control group, and the difference between the two groups was not statistically significant ( t value was 0.063, P>0.05).After nursing, MMSE score of patients in the observation group after nursing was 21.03±2.46, significantly higher than that of the control group 18.66±2.32 ( t value was 4.321, P<0.05). After nursing, the QOL-AD strongest items, stronger items, ordinary items, weak items scores in the post-nursing observation group were 10.70±1.22, 14.34±1.33, 10.44±1.08, 10.53±1.31, and 43.17±2.66, respectively. All of them were significantly higher than the control group (7.26±0.78, 9.37±0.90, 7.44±0.69, 7.48±0.74, 30.27±2.25), the difference between the two groups was statistically significant ( t value was 12.496-22.825, all P<0.05). After nursing, the BI score of the observation group was 68.06±16.51, which was significantly higher than that of the control group 51.04±15.56, the difference between the two groups was statistically significant ( t value was 7.018, P<0.05). The ADL score of the observation group was 16.19±7.22, which was significantly lower than that of the control group 20.52±8.79, the difference between the two groups was statistically significant ( t value was 22.347, P<0.05). Conclusion:Continuous nursing care for AD patients can improve cognitive function, improve quality of life, and improve the ability of daily life of patients.

Objective To investigate the effect of infiltrated mast cells on the biological characteristics of uterine carcinoma.Methods Twelve leiomyomas,ten uncertain malignant uterine leiomyomas,and seven uterine leiomyosarcomas were studied with light microscopy for the morphometry about their histological feature,mast cell particle and factor Ⅷ-related antigen(FⅧRAg);Cell apoptosis was measured by flow cytometry.The correlative analysis was carried out between the mast cell and others factors.Results Comparing with smooth muscle tumors of uncertain malignant potential(4209.9?273.0),the count of tumor cell was the highest in leiomyosarcoma(3557.6?346.3)(P

Objective To investigate the expression of E-cadherin and matrix metallopeptidase 7(MMP-7)and their significance in basal-like and Her-2 over-expressing breast carcinoma. Methods The protein expression of E-cadherin and MMP-7 were analyzed by immunohistochemical method in 20 cases of basal-like breast carcinoma and 21 cases of Her-2 over-expressing breast carcinoma.Statistical method was used to analyze the clinicopathological performance.Patients were followed up from 6 to 60 months.Results The ratio of basal-like breast carcinoma and invasive ductal carcinoma was 3.4%(20/501).the mean age was 49 years.The mean size of basal-like breast carcinoma(2.1 cm)was smaller than that of Her2 over-expressing breast carcinoma(3.0 cm)(P<0.05).The 5-year survival rate of patients with basal-like breast carcinoma was obviously(40.0%) lower than that of Her-2 over-expressing breast carcinoma (71.4%)(P<0.05),though,the 3-year survival rate was similar between the two groups.The protein expression of E-cadherin was down-regulated and even deficient in basal-like breast carcinoma(P<0.05).The protein expression of MMP-7 was higher in basal-1ike breast carcinoma than that in Her-2 overexpressing breast carcinoma(P<0.05).Conclusion Down-regulated expression of E-cadherin and upregulated expression of MMP-7 may be one of the mechanisms leading to high metastasis of basal-like breast carcinoma.

Multi-target drugs attract increasing attentions for the therapy of complicated neurodegenerative diseases. In this study, a computer-assisted strategy was applied to search for multi-target compounds by the pharmacophore matching. This strategy has been successfully used to design dual-target inhibitor models against both the acetylcholinesterase (AChE) and poly (ADP-ribose) polymerase-1 (PARP-1). Based on two pharmacophore models matching and physicochemical properties filtering, one hit was identified which could inhibit AChE with IC50 value of (0.337 +/- 0.052) micromol x L(-1) and PARP-1 by 24.6% at 1 micromol x L(-1).
Acetylcholinesterase ; metabolism ; Cholinesterase Inhibitors ; pharmacology ; Computer-Aided Design ; Drug Discovery ; methods ; Poly(ADP-ribose) Polymerase Inhibitors

OBJECTIVETo compare the differences in the clinical efficacy between Guan's quadruple therapy for kidney disease and the conventional western medication in the treatment of chronic renal failure (CRF).

METHODSEighty patients were randomized into an observation group and a control group, 40 cases in each one. In the observation group, besides the physician instruction of low protein and low phosphorus diet in the two groups, Guan's quadruple therapy for kidney disease was applied, including (1) the isolated herbal moxibustion at Shenshu (BL 23) and Pishu (BL 21), or Ganshu (BL 18), Zusanli (ST 36) and Guanyuan (CV 4) alternatively; (2) acupuncture at the auricular points such as shen (CO10), jiaogan (AHR6), Shenshangxian (TG2), fei (CO14) and pizhixia (AT4); (3) injection of mixture of astragalus injection and lidocaine injection at Feishu (BL 13), Pishu (BL 21), Shenshu (BL 23) and the others; (4) modified Shenshuai Yihao decoction according to syndrome differentiation. In the control group, the conventional western medication was used. After 6 months of treatment, the differences were observed between the two groups in the clinical efficacy, serum creatinine (Scr), blood urea nitrogen (BUN), endogenous creatinine (Ccr) and 24 h urine protein quantitation (UPQ).

RESULTSIn the observation group, after treatment, the remarkably effective rate was 50.0% (20/40) and the total effective rate was 82.5% (33/40), which were superior to 25.0% (10/40) and 45.0% (18/40) in the control group (both P < 0.05). After treatment, the levels of Scr, BUN and 24 h UPQ were reduced apparently (all P < 0.05), and the level of Ccr was increased apparently in the two groups (both P < 0.05). After treatment, the levels of Scr, BUN and 24 h UPQ were reduced much more apparently in the observation group as compared with those in the control group (all P < 0.05).

CONCLUSIONGuan's quadruple therapy for kidney disease achieves a better efficacy on CRF compared with the conventional western medication. This therapy improves renal functions, relieves clinical symptoms and physical signs and benefits the life quality of patients.

Acupuncture Therapy ; Adult ; Combined Modality Therapy ; Drugs, Chinese Herbal ; administration & dosage ; Female ; Humans ; Kidney Failure, Chronic ; drug therapy ; physiopathology ; therapy ; Kidney Function Tests ; Male ; Middle Aged ; Young Adult

Objective:To systematically assess the efficacy and safety of bevacizumab (BEV) plus chemotherapeutic agents as first-line therapy for metastatic colorectal cancer (mCRC). Methods:We retrieved randomized controlled clinical trials (RCTs) of BEV plus chemotherapeutic agents as first-line therapy for mCRC from the databases of PubMed (1966 to August 2009), Embase (1974 to August 2009), Cochrane Library (Issue 3, 2009), China Journal Full Text Database (CJFD, 1994 to August 2009), Chinese Bio-medical Literature Database(CBM, 1978 to August 2009) and Chinese Scientific Journals Full Text Database (CSJD, 1989 to August 2009). Then we evaluated the methodological quality of included studies. Meta-analysis was performed using RevMan 5.0 software developed by the Cochrane Collaboration. Results:Only 6 clinical studies were selected and 2 646 eligible patients were included in the systematic review. Meta-analysis showed that BEV plus chemotherapy increased the overall response rate (complete response+partial response) compared with chemotherapy alone. The relative risk was 1.27 (95%CI: 1.00-1.61, P=0.05), and the median survival time and progression-free survival (PFS) were longer. In terms of safety, there was a significant difference in the frequency of grade 3/4 adverse events, grade 3/4 hypertension, adverse events-induced study discontinuation and gastrointestinal perforation between the two groups. The relative risk was 1.12 (95%CI: 1.07-1.61), 4.51 (95%CI: 2.81-7.23), 1.37 (95%CI: 1.16-1.63)and 4.32(95% CI:1.24-15.05), respectively. There was no statistical difference between the two groups in the incidence of grade 3/4 bleeding, 60-day all-cause mortality, grade 3/4 proteinuria, grade 3/4 diarrhea, grade 3/4 leukopenia and pulmonary embolism. The relative risk was 1.50(95%CI: 0.87-2.57), 0.71(95%CI: 0.45-1.11), 2.26(95%CI: 0.69-7.33), 1.18(95%CI: 0.99-1.41), 1.17 (95%CI: 0.97-1.42)and 0.84(95%CI: 0.46-1.53), respectively. Conclusion:BEV plus chemotherapeutic agents as first-line the-rapy increases the response rate and prolongs PFS and median survival time of mCRC patients, but results in a higher incidence of any grade 3/4 adverse event, grade 3/4 hypertension and gastrointestinal perforation.

Objective To explore the application value of multiphase dynamic contrast-enhanced MRI (MDCE-MRI) in the early chemoradiation efficacy in cervical cancer.Methods Twenty-one patients with cervical cancer received chemoradiation.Routine MR scan and MDCE-MRI scan were examined at different stages, including pre-treatment, 15 days,1 month and 2 months after treatment.According to volume change of the tumor after treatment, the cases were mainly divided into complete remission(CR), partial remission (PR).The correlation between volume change of cancer after treatment and the time-signal intensity curve (TIC),mean time to enhancement(MTE),time to peak(TTP),maximum slope of increase(MSI),maximum slope of decrease(MSD), negative enhancement integral (NEI) were analysed.Results After system chemoradiation for 2 months,4 of enrolled patients got complete remission and 17 partial remission.The reduction rate of the tumor diameter was negatively correlated to MSI values(r=-0.877,P<0.05) and positively related with NEI (r=0.819,P<0.05) before the treatment.15 days after the treatment, the diminished rate of the tumor diameter had active relation with change of TTP(r=0.765,P<0.05) and NEI(r=0.775,P<0.05).It indicated that MSI and NEI values before cervical cancer chemoradiation and the variation of TTP and NEI after treatment for 15 days could help predict the variation tendency of cancer diameter.Chemoradiation and therapy 1 month later,for all the parameters'' AUC values,the change rate of NEI were the largest one.When the critical value was not less than 96.46%, the sensitivity was 82.4%, specificity was 75%.TIC curve of type Ⅰ increased, type Ⅲ decreased to disappear gradually.Conclusion MDCE-MRI can be used to predict the efficacy of chemoradiation in cervical cancer patients, of which the MSI, TTP and NEI are more sensitive.