Female ; Humans ; Infant ; Mutation ; Pain Insensitivity, Congenital ; complications ; genetics ; pathology ; Receptor, trkA ; genetics

To investigated the toxin genes distribution and molecular characteristics of Vibrio parahaemolyticus from pa‐tients in Ningbo ,V .parahaemolyticus strains were collected from patients with food poisoning and diarrhea .Thermostable di‐rect hemolysin gene (tdh) and TDH‐related hemolysin gene (trh) were detected by polymerase chain reaction (PCR) .Molecu‐lar characteristics were acquired by multi‐locus sequence typing (MLST ) .Of 248 clinical strains were isolated from 2006 to 2012 .Forty‐eight strains were selected to detect virulence genes and MLST genotyping .Forty‐two isolates were detected as tdh+ and 11 isolates were detected as trh+ .There were 9 STs and one undifferentiated type in Ningbo clinical strains .Thirty‐two strains were classified into ST3 ,5 strains into ST265 and 3 strains into ST120 .ST265 was found in Ningbo strains com‐pared with strains from other regions of China .Strains with tdh+ accounted for the majority in Ningbo clinical strains .Twen‐ty‐five strains of ST3 clone were tdh+ /trh‐.There were 9 STs coexsited in Ningbo clinical strains .ST3 clone was dominant , followed by ST265 and ST120 .Strains with tdh+ /trh‐were dominant in the ST3 clone .The unique ST262 was found in Ning‐bo clinical strains .

Bacteremia ; etiology ; Catheterization ; adverse effects ; Child ; Coagulase ; metabolism ; Cross Infection ; etiology ; Drug Resistance, Bacterial ; drug effects ; Endocarditis, Bacterial ; etiology ; Humans ; Methicillin ; pharmacology ; Quinolones ; pharmacology ; Staphylococcal Infections ; complications ; drug therapy ; microbiology ; Staphylococcus ; classification ; drug effects ; pathogenicity ; Urinary Tract Infections ; etiology ; Vancomycin ; pharmacology

Objective To investigate the protective effects of propofol against acute lung injury(ALI) induced by oleic acid.Methods Forty adult male SD rats weighing 250-290 g were anesthetized with intraperitoneal(i.p.)20% urethrane 6 ml?kg~(-1) and tracheostomized.Left common carotid artery and right internal jugular vein were cannulated for BP monitoring and fluid and drug administration.The animals were randomly divided into 5 groups (n=8 each):Ⅰ control group;Ⅱ ALI group in which ALI was induced by oleic acid 250 mg?kg~(-1) i.v.;Ⅲ,Ⅳ and Ⅴ ALI+propofol group in which propofol was continuously infused i.v.at 4, 8 and 16 mg?kg~(-1)?h~(-1) for 4 h immediately after i.v.oleic acid.The animals were killed at 4 h after oleic acid administration.The lungs were immediately removed for(1)examination of ultrastructure of the lung with transmission electron microseope and(2)determination of SOD and MPO activity,content of MDA,level of IL-10 and IL-18 and expression of NF-kB in lung tissue.Results In group Ⅱ intravenous oleic acid produced damage to mitochondria,rough endoplasmic reticulum and osmiophilic multi-lamellar body in type Ⅱ alveolar epithelial cells. Propofol infusion in group Ⅲ,Ⅳ and Ⅴ attenuated the damage to different degrees.In group Ⅱi.v.oleic acid produced significant decrease in MPO and SOD activity and significant increase in MDA content,IL-10,IL-18 and NF-kB expression in lung tissue.Intravenous propofol infusion attenuated the decrease in MPO and SOD activity, increase in IL-18 expression and MDA content and NF-kB expression in lung tissue produced by i.v.oleic acid, but increased IL-10 expression in lung tissue further.The best protective effect was seen in group Ⅳ.Conclusion Propofol i.v.infusion at 4-16 mg?kg~(-1),h~(-1) can inhibit the oxidative response and inflammatory response and down-regulate NF-kB expression in lung tissue.Propofol infusion at 8 mg?kg~(-1)?h~(-1) provides best protective effects.

Aim To investigate the influence of iridosides of cornus officinalis(ICO) on morphology, cell cycle and oxidative stress of glomerular mesangial cells(GMC) cultured with advanced glycation end products(AGEs). Methods GMC were incubated in culture medium containing AGEs in the presence of ICO and aminoguanidin for 48 hours. At the same time, the control and model groups were added. Then the cultured GMC were stained by mixed fluorescence liquid and observed under fluorescence microscope. Cell cycle of GMC were analyzed using flowcytometry. The content of MDA, activity of SOD and GSH-Px in GMC supernatant were measured. The level of ROS was detected using flowcytometry. Result Morphology analysis showed that the morphology and structure of normal GMC were normal. The structure of most cells in AGEs were unclear, cell counts increased largely and they grow intensively. Cell cycle analysis showed that cell percentage of S phase increased and G_0/G_1 reduced. The level of ROS, MDA remarkably increased, and SOD, GSH-Px activity reduced. When the ICO were added, cell morphology tended to be basically normal and cell counts decreased, the percentale of S phase also decreased. The level of ROS, MDA and the SOD, GSH-Px activity restored in comparison with the model groups. Conclusion ICO can prevent the cultured GMC from lesion caused by AGEs. ICO may protect GMC from AGES to retard the progression of diabetic nepropathy by partially inhibiting the occurrence of oxidative stress.

Objective To investigate the bioactivities of controlled release bFGF microspheres (Ms) and their effects on the cultured osteoblasts. Methods The secondary cultured osteoblasts were divided into four groups according to the different ingredients being added to the DMEM culture medium, ie, control group,bFGF group, bFGF-PLGA-Ms group and bFGF-PELA-Ms group. The proliferation of the cultured osteoblasts was measured with cell counting method, MTT method and flow cytometry. The content of bone BGP secreted by osteoblast was also measured with RIA method. Results The in vitro cellular study showed no significant difference in the cell number and cell viability of four groups one day after plate culture.The cell number and cell viability in the bFGF-PLGA -Ms group were more than those in other three groups four and six days after plate culture. The cell number and cell viabilitythose in the bFGF group were more than those in the bFGF-PELA-Ms group six and eight days after plate culture with insignificant difference. The flow cytometrical examination showed that the G 2/M+S percentage in the bFGF group reached the highest two days after plate culture and the G 2/M+S percentage in the bFGF-PLGA-Ms group went the highest four and eight days after plate culture. Among four groups, the content of BGP in the bFGF-PLGA-Ms group was the highest and the bFGF-PELA-Ms group the next. Conclusions The effect of bFGF-PELA-Ms is not satisfactory,as indicates that the manufacturing method needs improving. However,the bFGF-PLGA-Ms can promote the proliferation and differentiation of the osteoblasts through a long period of controlled release of bFGF.

AIM: To investigate the influence of Astragalus Injection on morphology,cell cycle and oxidative stress of rat's glomerular mesangial cells(GMC) cultured with advanced glycation end products(AGEs). METHODS: GMC were incubated in culture medium containing AGEs in the presence of Astragalus Injection and aminoguanidin for 48 h.At the same time,the normal and control groups were established.Then the cultured GMC was stained by mixed fluorescence liquid and observed under fluorescence microscope.Cell cycle of GMC was analyzed using flowcytometry.The activity of SOD、MDA and GSH-PX in GMC supernatant were measured by test kit.The level of ROS was detected by flowcytometry. RESULTS: Morphology analysis showed that the morphology and structure of normal GMC were normal.The structure of most cells in AGEs was unclear,cell counts increased markedly and they grew intensively.Cell cycle analysis showed that cell percentage of S phase increased and G_0/G_1 reduced.The level of ROS,MDA remarkably increased,and SOD,GSHPX activity reduced.Whereas Astragalus Injection was added,cell morphology tended to be basically normal and cell counts decreased,the percentage of S phase also decreased.The level of ROS,MDA and the SOD,GSH-PX activity restored in comparison with the control groups. CONCLUSION: Astragalus Injection can prevent GMC from lesion caused by AGEs.Astragalus Injection may protect GMC from retarding the progression of diabetic nepropathy by partially inhibiting the occurrence of oxidative stress.

Animals ; Blood Glucose ; drug effects ; Body Weight ; drug effects ; Chronic Disease ; Female ; Hypoxia ; physiopathology ; KATP Channels ; drug effects ; Male ; Propylamines ; pharmacology ; Protective Agents ; pharmacology ; Rats ; Rats, Sprague-Dawley

Electromagnetic Fields ; Magnetic Fields ; Microwaves ; adverse effects ; Television

Objective　 To study the effects of sodium butyrate on proliferatio n, differentiation and apoptosis of immortalized esophagus epithelial cells. Methods　 SHEE, an immortalized human fetal esophageal epithelial cell line induced by HPV18 E6E7, was cultivated in culture flasks and 24-well plates. Two experi m ent groups of cultured cells were treated with 1 and 5 mmol/L of sodium butyrate respectively for 4 days, and one group of untreated cells set aside as control. The numbers of cloned cells were calculated. The ultra-structure of SHEE cells was examined by transmission electron microscopy (TEM). The cell cycle and numbe r of apoptotic cells were measured by flow cytometry, Ki-67 and cytokeratin of ce lls were detected by immunohistochemistry method and F-actin of cells labeled w ith phalloidin was examined by laser confocal scanning microscopy. Results　 Colo ny formations showed a significant decrease in the 2 experiment groups after 4 d ays of culture (P<0.01). In the 1 mmol/L group, the cells at S phase were di minish ed and arrested at G0/G1 phase. Compared with control group, Ki-67 positive cells were found decreased, while F-actin and cyto keratin were increased. Apoptotic cells in 5 mmol/L group were increased markedl y. Conclusions　 Sodium butyrate may induce SHEE cells growth arrest,differentiation and apoptosis. The effects depend on sodium butyrate concentrat ion and time of exposure. Whether it can be used in combination with other antic ancer drugs should be further studied.