Objective By observing the changes in NGF and its receptor P75 in liver of CCl4-induced toxic rats and to evaluate the role of NGF in the mechanism of hepatic fibrosis.Methods The expressions of NGF mRNA and its receptor P75 were detecteded by both hemi-quantitative RT-PCR and Western blot analysis.Results The expressions of NGF mRNA and its receptor P75 in liver of CCl4-induced toxic rats at 24th hour group were higher than that in control group(P

Objective: It is difficult to repair large-area Ⅲ?burn wound in children.Here we introduce the advantages of the back skin donor site in repairing Ⅲ?burn wound in children.Methods: This clinical study included 15 children with Ⅲ?burn,ranging in age from 18 months to 11 years(mean 7.6 years),with the Ⅲ?burn wound area averaging at 12.6% of the total body surface.The back skin donor site was used to repair the wound.The functional site,such as the joint,was preferentially considered if the skin graft was not enough for all the wounds.Results: Most of the skin grafts survived and the donor sites on the back healed very well.The patients were followed up for six months to three years,which revealed that the skin grafts remained soft without dysfunction and the scar hyperplasia was mild on the donor site.Conclusion: The back donor site supplies larger-area skin with good quality.The donor site heals fast.After healing,patients could sleep on back and compress the scar so as to prevent scar hyperplasia,and the scar does not affect the patient's appearance.With all these advantages,the back donor site is a good choice for repairing Ⅲ?burn wound in children.

OBJECTIVE:To prepare epirubicin hydrochloride solid lipid nanoparticle(EPI-SLN) and investigate its physicochemical property. METHODS: EPI-SLN was prepared by ultrasonic dispersion technique with glyceryl behenate as matrix,and the appearance,particle size,? electric potential,and entrapment efficiency of the SLN were evaluated and its stability at 3 month storing at 4 ℃ was investigated. RESULTS: EPI-SLN assumed spherical shape with a particle diameter of (212.8?6.2) nm,? electric potential of (-24.7?0.3) mV and entrapment efficiency of 82 %. The EPI-SLN at 4 ℃ was stable after storing for 3 months,showing no marked change in mean diameter,? electric potential or entrapment efficiency. CONCLUSION: The prepared EPI-SLN is up to the standard.

Objective To explore the dynamic expression of ROCK-Ⅰ,p-MBS Thr-697,α-SMA protein and their mRNA in the hepatic fibrogenesis and the changes of actin cytoskeleton.Methods ROCK-Ⅰ and p-MBS Thr-697 protein in liver were determined by Western blot and their mRNA was examined by reverse transcription-polymerase chain reaction (RT-PCR),while the distribution of ROCK-Ⅰ and α-SMA in liver was assessed immunohistochemis-tically.The change of actin cytoskeleton was shown by fluorescence.Results With the development of hepatic fi-brosis,the positive areas in model groups at week 1 to 4 of ROCK-Ⅰ and α-SMA of the rat livers were larger than that in control group respectively(P <0.05).ROCK-Ⅰ,p-MBS Thr-697 ,α-SMA protein and mRNA were increased than that in control group respectively.ROCK-Ⅰ mRNA expression correlated with α-SMA (r =0.718,P <0.05).With the development of liver fibrosis,the images of fluorescence were inhanced.Conclusion With the develop-ment of liver fibrosis,both protein and mRNA of ROCK-Ⅰ increased.

Aim To investigate the pharmacokinetics of dipfluzine hydrochloride,a novel piperazines calcium antagonist.Methods Eighteen Beagle dogs were randomly divided into three groups,which were administered with dipfluzine hydrochloride at iv single dose of 1.5,3.0 and 6.0 mg?kg-1,respectively.The blood was collected at different time.A RP-HPLC method was developed to determine the concentration of dipfluzine hydrochloride in plasma.The pharmacokinetic parameters were calculated by 3P97 software.Results The specificity,lowest limit of detection and quantification,extraction recoveries,the precision of intra-and inter-day and stability were qualified to the pharmacokinetic study.The concentration-time courses of dipfluzine hydrochloride were best fitted to a two-compartment open model at three doses.The main pharmacokinetic parameters at three doses were 24.7,24.2 and 29.6 h for T12?,0.44,1.12 and 2.86 g?min?L-1 for AUC,1.30,1.22 and 1.28 L?kg-1 for Vc,and 3.4?10-3,2.7?10-3 and 2.1?10-3 L?kg-1?min-1 for CL,respectively.Conclusions The developed RP-HPLC method for determination of dipfluzine hydrochloride in plasma can satisfy the requirement of pharmacokinetic study after iv dipfluzine hydrochloride.Analysis of plasma concentration-time curves indicates a biphasic decrease.There was a linear relationship between AUC and dosage.

Objective To evaluate the effect of osteopontin(OPN) on the adhesion and migration of hepatic stellate cells(HSC) and focal adhesion kinase(FAK)phosphorylation.Methods The proliferation of HSCs was determined by MTT.The adhesion rates were shown by toluidine blue colorimetric assay.The HSC migration rates were examined by HE staining.The expression of FAK phosphorylation was examined by Western blotting analysis.Results ①Compared with control group,OPN at concentrations of 8 mg/L,16 mg/L and 32 mg/L promoted the adhesion of HSCs(P

Objective To observe the expressive changes of RhoA and phosphorylated myosin light chain in rat liver tissue undergoing hepatic fibrogenesis.Methods The liver histopathological changes were evaluated by hematoxylin and eosin staining and Masson's trichrome method.Western blot was used to determine the expressions of RhoA and p-MLC(Thr18/Ser19),and reverse transcription-polymerase chain reaction(RT-PCR) to determine the expression of RhoA mRNA.Results With the development of hepatic fibrogenesis,the protein expressions of RhoA and p-MLC(Thr18/Ser19) and the mRNA expression of RhoA were significantly increased.RhoA and p-MLC(Thr18/Ser19)correlated with ?-SMA positively,respectively.Conclusion Rho/ROCK signaling pathways are changed in the process hepatic fibrogenesis.

AIM: To explore the role of NO/ inducible nitric oxide synthase (iNOS) in the metabotromi glutamate receptor 2/3C (mGluR2/3) mediated-brain ischemic tolerance induced by cerebral ischemic preconditioning (CIP), and to observe the influences of α-methyl- (4-tetrazolyl- phenyl) glycine (MTPG), an antagonist of mGluR2/3, on the expression of iNOS during the induction of brain ischemic tolerance. METHODS: Thirty-six Sprague-Dawley rats were subjected to four vessel occluding global brain ischemic model. Thionin staining and immunohistochemistry were used for neuropathological evaluation and assay of iNOS expression in the hippocampal CA1 subregion of the rats. RESULTS: In the sham group, weak expression of iNOS was detected. The expression of iNOS in the CIP and CIP+ischemic insult groups were increased significantly compared with that in the sham group. Administration of MTPG via lateral cerebral ventricle 20 min before CIP blocked the up-regulation of iNOS induced by CIP, but had no influence on the pyramidal neuron survival. However, in the MTPG+CIP+ischemic insult group, the expression of iNOS was extremely intensive compared to that in CIP and MTPG+CIP groups. Importantly, this up-regulation was accompanied with obvious delayed neuronal death. CONCLUSION: NO/iNOS pathway plays an important role in the process of mGluR2/3 mediated-brain ischemic tolerance induced by CIP.

Objective To analyze the clinical presentation of functional dyspepsia in Chinese ado lescents.Methods A stratified,randomized study by cluster sampling was employed,which recruited 51 956 students from high and primary schools in six provinces and two cities.All students were requested to fill in a questionnaire.Functional dyspepsia was diagnosed according to Rome Ⅱ criteria.Results Among 51 956 students,10 174 were diagnosed as functional dyspepsia(accounted for 19.58%).Heart burn,hiccup and air swallowing to terminate hiccup were major symptoms of functional dyspepsia.The upper abdominal distention,epigastric pain,anorexia and insomnia were common in boys than girls with no significance(P＞0.05).The belching,early satiety,fatigue and anxiety were significantly higher in girls than boys.Conclusions Functional dyspepsia is a common disorder among the adolescents.Educa-tion and psychotherapy are important in the treatment of students with functional dyspepsia.

Objective To investigate the safety and clinical efficacy of uterime artery chemoembolization in postpartum hemorrhage (PPH) caused by abnormal placental implantation.Methods Between December 2006 and September 2009, there were 23 cases of abnormal placental implantation with PPH in our hospital, among which 9 presented with continuous small amount of vaginal bleeding and 14 with acute excessive bleeding.The average bleeding time was (8±6) d and the mean blood loss was (980±660) ml.Abnormal placental implantation was confirmed by color Doppler ultrasound (CD-US) in all cases, the internal lilac artery angiography was performed to identify the uterine artery and bilateral uterine artery chemoembolization (UACE) with methotrexate (MTX) and gelfoam particles to the distal end of uterine artery was conducted after.CD-US rechecked all patients within 48 h after UACE and those patients with blurred margins between placenta and uterus and abnormal blood flow (> 1 cm×1 cm) received ultrasonic-guided per vagina MTX multipoint injections.All cases were followed up for 3-26 months (average 12 months) to observe vaginal bleeding, placenta tissue discharge, serum human chorionic gonadotropin (hCG), uterine involution, menses, and side-effects or complications.Results (1) Curative effect: These 23 cases underwent 24 procedures of UACE successfully and vaginal bleeding ceased at an average of (3.5±1.3) min after UACE.Reduced blood flow in the placental implantation area was detected under CD-US after UACE.Among the 23 patients, wterine curettage was required in 16 cases due to retained placenta tissues with the mean blood loss of (40 ± 28) ml during the operation, 2 underwent subtotal hysterectomy and confirmed to be placenta percreta by pathology examination, and placenta tissues were spontaneously discharged completely in 5 cases.Totally, 91% of the patients (21/23) reserved their uterus.(2) Follow-up: the serum hCG reduced to normal within 1-13 d after the placenta tissue were evacuated.Regular menstruation returned within 2-3 months in those patients who reserved uterus and normal size uterus was found under sonography at 3 months.No severe complication was reported except for some post embolization syndrome, such as pelvic pain or fever.Conclusions UACE, combined with ultrasonic-guided transvaginal MTX injection, is a safe, minimal invasive and quick hemostatic procedure in treatment of abnormal placental implantation with PPH, and allows the preservation of uterus possible.CD-US is helpful in evaluation of the blood flow changes before and after UACE in abnormal placental implantation patients.