China ; History, 20th Century ; History, 21st Century ; Pathology ; Periodicals as Topic ; history

Objective To evaluate the neuroprotective effect and safety of neonatal hypoxic-ischemic encephalopathy(HIE)treated with recombinant human erythropoietin(rhEPO).Methods Fifty-three neonates with HIE were randomly divided into rhEPO treated group(n=29) with the dosage of 300 U/(kg?time),three times a week for 2 weeks and control group(n=24)without rhEPO.All supportive measures were same between 2 groups.Neurological scoring was evaluated at d3,d5 and d7 Neonatal behavioral neurological assessment(NBNA) was evaluated at d7,d14 and d28.The neurodevelopment quote was evaluated at age of 3 and 6 months.Blood pressure,liver and renal function,blood electrolytes and blood hemoglobin,platelet and reticular red blood cell count were monitored before and after treatment in all infants.Results The neurological scoring between two groups had no difference at d3.The significant difference was found at d7(P0.05).Conclusions Teraphy with rhEPO on neonatal HIE infants can promote neurological recovery,and there is no serious side effect with rhEPO treatment.

ObjectiveTo explore the clinical and epidemiological value of semi-quantitative regional cerebral blood flow(rCBF)imaging in children with school phobia. Methods A total of 20 cases diagnosed with school phobia were examined with rCBF.Twelve were males and the other 8 were females.The mean age was(14.2?2.1)years(11-18 years).Semi-quantitative analysis methods were used to investigate the correlations among gender,age and rCBF. ResultsThere were significant differences in the rCBF of right fronto-parietal lobe,right occipital lobe,caput and putamen,left thalamus and hippocampus,and temporo-occipital lobe between males and females(P0.05).Only the PI of left temporo-parietal lobe of those ≥ 15 years old was significantly different from that of those

Endophytic bacteria which was producing indoleacetic acid was screened from Panax ginseng by using the Salkowski method. The active strain was also tested for its ability of nitrogen fixation by using the Ashby agar plates, the PKV plates and quantitative analysis of Mo-Sb-Ascrobiology acid colorimetry was used to measure its ability of phosphate solubilization, for its ability of potassium solubilization the silicate medium and flame spectrophotometry was used, for its ability of producing siderophores the method detecting CAS was used, for its ability of producing ACC deaminase the Alpha ketone butyric acid method was applied. And the effect on promoting growth of seed by active strain was tested. The results showed that the indoleacetic acid producing strain of JJ5-2 was obtained from 118 endophytes, which the content of indoleacetic acid was 10.2 mg x L(-1). The JJ5-2 strain also had characteristics of phosphate and potassium solubilization, nitrogen fixation, producing siderophores traits, and the promoting germination of ginseng seeds. The JJ5-2 strain was identified as Bacillus thuringiensis by analyzing morphology, physiological and biochemical properties and 16S rRNA gene sequences.
Bacteria ; isolation & purification ; metabolism ; Endophytes ; isolation & purification ; metabolism ; Indoleacetic Acids ; metabolism ; Panax ; microbiology

OBJECTIVE: To perform the proteome analysis of conditioned medium prepared from mouse embryonic fibroblast feeder layers by 2-dimensional (2D) electrophoresis and mass spectrometry and to find out the possible differentiation-inhibitory factor in conditioned medium. METHODS: Feeder layers were prepared by 60Co gamma-irradiation on mouse embryonic fibroblast. Insulin-transferrin-sodium selenite supplemented medium was used to culture the feeder layers for 24 hours. The condioned medium prepared from mouse embryonic fibroblast feeder layers were made into powder by lyophilization, the redissolved solution was applied to Sephadex G-50 gel filtration chromatography, and then cold acetone was used to precipitate the proteins in the eluted solution. The protein samples were applied to 2D electrophoresis. The 2D images were analyzed by 2D image analysis software. Selected protein spots were digested by trypsin, analyzed by mass spectrometry, and then searched against the NCBInr batabase using Mascot MS/MS Ions Search. RESULTS: The protein samples extracted from mouse embryonic fibroblast feeder layers conditioned medium could be used for 2D electrophoresis. On 2D images, there were (221+/-67) spots. Most of the proteins were located in the region of MW 20 approximately 70 kD, pI 4 approximately 8. Using mass spectrometry, we preliminarily identified 13 spots: 3 keratins, 3 transferrins, 1 trypsin precursor, 2 unknown proteins (3 spots), 1 connexin 46, 1 beta-galactoside binding protein, and 1 secreted protein, acidic and rich in cysteine. CONCLUSION Conditioned medium prepared from mouse embryonic fibroblast feeder layers contain beta-galactoside binding protein and secreted protein, acidic and rich in cysteine.
Animals ; Cells, Cultured ; Culture Media, Conditioned ; chemistry ; Cysteine ; chemistry ; Electrophoresis, Gel, Two-Dimensional ; Embryo, Mammalian ; Fibroblasts ; cytology ; Galactosides ; chemistry ; Mass Spectrometry ; Mice ; Proteome

Antioxidant activity of bronchial epithelial cells (BECs) plays an essential role in preventing the airway epithelium integrity from damage in structure and function. Integrin expressed by BECs is the receptor of extracellular matrix such as fibronectin (Fn), and it is involved in modulation of proliferation, differentiation and metabolism of the cells. In order to test the hypothesis that integrin-ligand binding reaction supports the ability of cells to withstand oxidant attack, the present study evaluated the antioxidant activity of primary cultured rabbit BECs treated with fibronectin or its sequence Arg-Gly-Asp (RGD peptide), by determining changes in the activity of glutathione peroxidase (GSH-Px), superoxide dismutase (SOD) and catalase (CAT) and in the level of glutathione (GSH). The results are as follows: (1) Fn (10 μg/ml) increased significantly the activity unit of GSH-Px (P<0.05, n=5), which was inhibited by calmodulin-inhibitor W7 　(10－5 mol/L) (P<0.05). Both Fn (5～20 μg/ml) and RGD (15～60 μg/ml) showed a dose-dependent upregulatory effect (respectively r=0.93 and r=0.73). (2) Treatment with Fn increased SOD activity (P<0.01,　n=7), which was abolished by W7 　(P<0.01). (3) Catalase activity was also stimulated by Fn (P<0.05, n=6) and reversed by W7 　(P<0.01). (4) A dose-dependent increase of GSH level was observed in both Fn (r=0.82) and RGD treatment (r=0.84). The data suggest that the binding of integrin with extracellular matrix can upregulate activity of antioxidant enzymes, and increase the content of GSH and improve the ability of BECs to resist oxidant injury.

Colectomy ; Colonic Neoplasms/surgery* ; Colonoscopy ; Humans ; Lymph Node Excision ; Lymph Nodes/pathology* ; Robotic Surgical Procedures

OBJECTIVEThe goals of this work was to analyse the cost of Shenqi Fuzheng injection-an extraction of a Chinese traditional herbs on reducing adverse effects in lung cancer patients during chemotherapy.

METHODSIn a randomized cross-over trial, each patient completed two identical cisplatin-based chemotherapy cycles, one with Shenqi Fuzheng injection, another without Shenqi Fuzheng injection. Adverse effects and change scores of quality of life (QOL) during chemotherapy were compared in tow cycles. The direct cost dealing with adverse effect and cost-effectiveness analysis were taken.

RESULTSOne hundred and thirty were enrolled with 123 of whom were evaluable. The patient characteristics were well balanced between the two groups. The chemotherapy cycles with Shenqi Fuzheng injection spent 220.5 more Chinese yuan, but the adverse effect of leukopenia, thrombocytopenia and vomiting were slight different and the change of score of several QOL domains showed significant better as compared to those in another cycle.

CONCLUSIONShenqi Fuzheng injection could reduce the severity of toxicity related to chemotherapy and improve the QOL of patients and had some benefits in terms of cost-effectiveness.

Aged ; Antineoplastic Agents ; adverse effects ; Cost-Benefit Analysis ; Costs and Cost Analysis ; Cross-Over Studies ; Drugs, Chinese Herbal ; economics ; therapeutic use ; Female ; Humans ; Injections ; Lung Neoplasms ; drug therapy ; Male ; Middle Aged

OBJECTIVETo investigate the change of oxidative stress and nuclear factor-kappaB (NF-kappaB) activity in acute paraquat (PQ) poisoned rats and the effect of PDTC.

METHODS144 SD rats were randomly divided into four experimental groups: control group (6 rats), PDTC group (36 rats), PQ group (56 rats) and PQ + PDTC group (46 rats). On the 1st, the 3rd, the 7th, the 14th, the 28th and the 56th day after treatment, the level of malondialdehyde (MDA), the activity of glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), catalase (CAT) and myeloperoxidase (MPO) in serum were detected; the content of hydroxyproline (Hyp) and the activity of NF-kappaB in lung tissues were detected; the lung pathological changes of rats were observed.

RESULTSThe level of MDA and MPO in serum increased and the activity of GSH-Px, SOD, CAT in serum decreased significantly in PQ group compared with control and PDTC group (P<0.05 or P<0.01) in the corresponding sacrifice dates. There were a significant decrease of MDA and increase of GPx, SOD, CAT in PQ + PDTC group compared with PQ group (P<0.05 or P<0.01) in the corresponding sacrifice dates. The activity of NF-kappaB in lung tissue of PQ group significantly increased on the 1st, the 3rd, the 7th and 14th day compared with control and PDTC group (P<0.01). There was a significant decrease in NF-kappaB activity on the 1st, the 3 rd, the 7th day in PQ + PDTC group compared with PQ group (P<0.05 or P<0.01). The MPO activity on the 14th day was (119.56 +/- 21.23) U/L, was lower than that of PQ group (P<0.05). Meanwhile, the content of Hyp in PQ group was significantly higher than control and PDTC group on the 14th, the 28th and the 56th day (P<0.01), and its content was lower in PQ + PDTC group on the 28th and the 56th day (0.89 +/- 0.05), (0.93 +/- 0.13) microg/mg compared with PQ group (P<0.01). The histological changes such as alveolitis and fibrosis in PQ + PDTC group were slighter than those in PQ group.

CONCLUSIONOxidative stress and NF-kappaB could play an important role in lung injury of poisoned rats. PDTC may improve redox imbalance and inhibit the expression of NF-kappaB and therefore might have therapeutic effect on acute paraquat poisoning.

Animals ; Disease Models, Animal ; Lung ; drug effects ; metabolism ; pathology ; Male ; NF-kappa B ; metabolism ; Oxidative Stress ; drug effects ; Paraquat ; toxicity ; Rats ; Rats, Sprague-Dawley

Engineering E. coli strain, BL21 (DE3)/pGEX-4T-human Thymosin alpha 1, was constructed by oligonucleotide annealing and PCR amplifying the target gene, then ligating it with pGEX-4T-3 vector and transferring into BL21 host. The yield of fusion protein of GST-Thymosin alpha 1 expressed from BL21 (DE3)/pGEX-4T-thymosin alpha 1 is about 35%-40% of total protein after fermentation. Following the simple cut of thrombin or CNBr, about 0.2 g/L thymosin alpha 1 can be harvested. The product is checked by MS and activity test, which indicates that the recombinant product has full biological activity of native thymosin alpha 1.
Escherichia coli ; genetics ; Genetic Engineering ; Humans ; Recombinant Fusion Proteins ; biosynthesis ; isolation & purification ; Thymosin ; analogs & derivatives ; biosynthesis ; genetics ; isolation & purification