Objective To establish and evaluate a reliable and highly reproducible neonatal rat model of hyper-bilirubinemia and to provide an experimental basis for research of kernicterus and related mechanism of neuroinjury.Meth-ods Sixty 7-day old SD rats (28 male and 32 female) were used in this study.Three doses of phenylhydrazine hydrochlo-ride (25, 50, and 75 mg/kg) were intraperitoneally injected respectively to the neonatal rats to establish models of hyper-bilirubinemia induced by hemolysis.The control group was set up at the same time.48 hours after the experimental treat-ment, the bilirubin in blood and brain tissue, neuron-specific enolase (NSE) of brain tissue, and hemoglobin were detec-ted to evaluate the models.Results Compared with the control group, the bilirubin in the blood and brain tissue and the brain tissue NSE in the three experimental groups were significantly higher than that in the control group (P<0.05), while hemoglobin content was significantly lower than that in the control group (P<0.05).The bilirubin of blood and brain tis-sue and brain tissue NSE in the 50 mg/kg and 75 mg/kg dose phenylhydrazine hydrochloride groups were significantly high-er than that of the 25 mg/kg dose group ( P<0.05) , while hemoglobin content was significantly lower than that of the 25 mg/kg dose group ( P<0.05 ) .There were no significant differences between the 50 mg and 75 mg dose groups ( P>0.05).Conclusions Intraperitoneal injection of phenylhydrazine hydrochloride can be used to produce neonatal rat mod-els of hyperbilirubinemia, mimicking the clinical features of this disease, and 50 mg/kg of phenylhydrazine hydrochloride is the best concentration.It is an ideal method to establish newborn rat models of hyperbilirubinemia.

Objective To establish the newborn rhesus monkey model of hemolytic hyperbilirnbinemia and provide an experimental basic model for research of hyperbilirubinemia.Methods Sixteen 3-day old newborn rhesus monkeys were divided into experimental group and control group,with 8 newborn rhesus monkeys in each group.Eight newborn rhesus monkeys in experimental group were treated with intravenous injection of l0 g/L phenylhydrazine hydrochloride (50 mg/kg) to establish model of homolytic hyperbilirubinemia.The newborn rhesus monkeys in control group were treated with intravenous injection of 9 g/L saline at the same time.Twenty-four hours and 48 hours after the experimental treatment,the bilirubin in blood was detected to evaluate the models,and the clinical manifestations of newborn rhesus monkeys with hyperbilirubinemia were recorded by using monitoring equipment.The brain slices were made to evaluate the model in 1 dead monkeys of experimental group.Results The newborn rhesus monkey of experimental group showed obvious skin,sclera jaundice and hemoglobinuria.The serum total bilirubin [(252.76 ± 63.42) μmol/L],unconjugated bilirubin[(165.85 ±44.93) pmol/L] and conjugated bilirubin [(87.16 ±21.22) μmol/L] in the experimental group were significantly higher than those [(20.62 ± 5.72) μmol/L,(7.93 ± 2.31) μmol/L,(12.51 ± 3.53) μmol/L] in the control group,and the differences were statistically significant (t =14.581,13.881,14.040,all P ＜ 0.01).The level of hemoglobin [(47.18 ± 10.09) μmol/L] in the experimental group was significantly lower than that of the control group [(136.85 ± 13.48) μmol/L],and the difference was statistically significant (t =-21.308,P ＜ 0.01).The results of pathological showed brain edema,rupture and eosinophilic and bilirubin deposition in the basal nuclei,and necrosis appeared in some severe parts.And there were different degrees of retardation and coordination disorders in the experimental group(s) newborn rhesus monkeys,but gradually returned to normal in 4 months later.Conclusion Intravenous injection of phenylhydrazine hydrochloride can be used to produce newborn rhesus monkey models of hemolytic hyperbilirubinemia.

Objective To investigate the influence of primary cultured neonatal rat hippocampal neurons caused by human cytomegalovirus (HCMV AD169) infection on intracellular calcium and its mechanism.Methods Twenty SPF SD rats born within 24 hours(10 cases of male and 10 cases of female) were assigned to establish the primary rat hippocampal neuronal monolayer cells; After cultured 8 days in vitro,the eligible cells were randomly divided into HCMV infection group,HCMV + MK-801 group,MK-801 group and control group,with 10 wells in each group.The fluorescence intensity values of the intracellular free calcium were detected after 24 hours of treatment with Fluo-3AM fluorescence staining.Results Inoculation of HCMV neurons after 24 h turned to round and swollen gradually,and 4days later,most of the cells disappeared; by immunohistochemistry in cultures of hippocampal neurons in HCMV,visible early proteins,brownish yellow granules,hematoxylin were found after being stained with brown pigment.The fluorescence intensity values of neuronal intracellular calcium (215.5 ± 14.9) in HCMV group was higher than that of control group (116.4 ± 5.9) (t =15.2,P ＜ 0.01),whilerise,that in MK-801 group (88.1 ± 4.5) was significantly lower than that of control group,with decreased rate of (24.0 ± 6.7) ％ (t =-9.3,P ＜ 0.01).The fluorescence intensity values of neuronal intracellular calcium in HCMV + MK-801 group (135.5 ± 8.6) was significantly decreased compared with that of HCMV group (215.5 ± 14.9),with decreased rate of (37.0 ± 3.4) ％ (t =11.3,P ＜ 0.01).Conclusions Intracellular calcium overload of cultured rat hippocampal neurons in vitro with HCMV AD16 strains infection can be detected.One of its main mechanisms is the N-methyl-D-aspartic acid receptor channel-mediated calcium influx.

ObjectiveTo recover the effect of rehabilitation therapy on the automatic nervous system(ANS)of patients with stroke. MethodsThe multiple index measurement was applied to measure ANS after stroke in 31 patients. The therapy of the Bobath,Brunnstrom and Rood were used as the basic methods for 3 months.ResultsThe balance index of the automatic nerve after treatment by the rehabilitation therapy was higher markedly than before(P<0.01).There is a correlativity with recovery of the movement function. Conclusions The rehabilitation can improve the function of automatic nerve.

Anti-Bacterial Agents ; pharmacology ; Child ; Humans ; Macrolides ; pharmacology ; Microbial Sensitivity Tests ; Mycoplasma pneumoniae ; drug effects

Objective To explore the changes and the tendency of breast cancer radiotherapy in China within the past decade.Methods A survey on breast cancer radiotherapy in 1 999 and 2006 was conducted in 4 hospitals located within the southeast coastal region of China,including patients'clinical characteristics,the purpose of radiotherapy and its techniques.Results The percentage of breast conservative treatment(BCT)increased from 3%in 1999 to 13%in 2006.For radiotherapy techniques in 2006 compared with 1999,the growth trend was found in use of breast immobilization devices(80% vs.46%),treatment planning system(70% vs.23%),and CT simulation(14%vs.0).The frequency was increased in the chest wall irradiation after masteetomy(90%vs.67%),but decreased in internal mammary region(30%vs.76%)and axilla(37%vs.69%)treatment.There were no differences in total dose and fractionation prescription.Conclusions BCT was performed more frequently,but postmastectomy radiotherapy was still essential option in China at present.Although some advanced techniques were applied frequently in clinical practice.Simulation,treatment planning,and irradiation target design were urgent for improvement and standardization.

Animals ; Aorta ; drug effects ; physiology ; Blood Pressure ; drug effects ; Cadmium ; toxicity ; Female ; In Vitro Techniques ; Male ; Muscle, Smooth, Vascular ; drug effects ; physiology ; Rabbits ; Vasoconstriction ; drug effects

OBJECTIVETo develop an RP-HPLC method for simultaneous determination of 5 constituents in Fructus Cnidii.

METHODAnalysis was performed on an Alltech C18 (4.6 mm x 250 mm, 5 microm) column. The mobile phases were acetonitrile water and acetic acid with gradient elution. The flow rate was 1 mL x min(-1). The monitoring wavelength was 325 nm and 245 nm. The column temperature was 40 degrees C.

RESULTThe linear response ranges were 1-20 microg x mL(-1) (r = 0.999 9) for xanthotoxin, 1-20 microg x mL(-1) (r = 0.999 9) for isopimpinellin, 11-20 microg x mL(-1) (r = 0.999 8) for bergapten, 100-1 200 microg x mL(-1) (r = 0.999 7) for imperatorin, 100-2 000 microg x mL(-1) (r = 0.999 9) for osthole. The average recoveries were all above 95%.

CONCLUSIONThe method is simple, sensitive and accurate with good reproducibility.

Chromatography, High Pressure Liquid ; methods ; Cnidium ; chemistry ; Coumarins ; analysis ; Fruit ; chemistry ; Furocoumarins ; analysis ; Methoxsalen ; analogs & derivatives ; analysis ; Plants, Medicinal ; chemistry ; Reproducibility of Results

Objective To study the effects of rehabilitation(RT)on cardiac function in cerebral infarct (CIF)patients with cardiac insufficiency(CIS).Methods Fifty-nine CIF patients with CIS were randomly divid- ed into a treatment group(T group,n=29)and a control group(n=30),and all patients were treated with routine pharmacotherapy for 2 months.In addition,RT was administrated in the T group at the same time.The grading of the New York Heart Association(NYHA)and the changes in cardiac function associated index were observed in both groups before and after treatment.Results Compared with the control group,NYHA grades,left ventricle ejection fraction(LVEF),the levels of brain natriuretic peptide(BNP)in the blood plasma,and the 6min walking range of the T group patients were all significantly improved after treatment(P＜0.05).Conclusion RT can improve car- diac function in CIF patients with CIS.

0.05),but expression of VEGF,GLUT1 and MDR1 were all enhanced and overall proliferation was promoted,apoptosis inhibited [(11.46?0.28)% vs (29.27?0.18)%,(15.77? 0.49)% vs (31.13?0.08)%],and transmembrane behavior enhanced [(37?12)% vs (26?7)%, (40?9)% vs (28?5)%],and the variations were significant (P