Objective To investigate the therapeutic effect and safety of the intratracheal instillation of sodium nitroprusside for treating persistent pulmonary hypertension of newborn (PPHN) .Methods The intratracheal instillation of sodium nitroprusside was used to 19 cases of PPHN under the mechanical ventilation ,and the pulmonary arterial mean pressure(PAMP) ,arterial mean pressure(AMP) ,transcutaneous oxygen saturation(TcSaO2 ) of the right upper and left lower limb at the basic state ,30 ,60 ,120min after intratracheal instillation of sodium nitroprusside were respectively measured and compared .Results Among 19 cases of PPHN ,17 cases had the primary lung disease .Of 17 cases ,14 cases(82 .35% ) had significant decrease of PAMP after intratracheal instillation of sodium nitroprusside ,which was most significant at 30min after therapy and the difference was statistically significant compared with before therapy [(21 .30 ± 4 .200)mm Hg vs .(30 .30 ± 4 .20)mm Hg ,P<0 .05] ,but AMP between before and after therapy had no statistical difference [(56 .00 ± 3 .00)mm Hg vs .(55 .00 ± 6 .00)mm Hg ,P>0 .05] .Conclusion The intratracheal instillation of sodium nitroprusside is the safe ,effective and economic method for treating PPHN .

Objective Perioperative fluid therapy has always been the most basic and important measure to maintain the stability of patients'cyclic system.Colloid and crystalloid,as common perioperative fluid,play different roles in clinical application due to the different molecular sizes.In the recent years,besides their contribution to maintain the stability of cyclic system,scientists have begun to pay attention to the effect on coagulation,especially their comparison.This paper mainly discusses the study status of the influence on coagulation produced by different liquids.

Books ; Language ; Linguistics ; Medicine, Chinese Traditional ; Translations

Objective To investigate the cytotoxic effects of differentiated PC12 cells afterinfected by prion protein 106-126 peptide.Methods The PC12 cells were infected by prion protein 106-126peptide after differentiated by nerve growthfactor(NGF).Cell viability andthe morphological changes were observed.The energy metabolize and apoptosis was detected.Results Afterinfected by this peptide,cell viability decreasedfrom(98.1±1.9)% to (69.2±4.7)%,and apoptosis peak Was observed byflow cytometry.Aboutthe process of the cytotoxic effects,afterthe cells affected by PrP106-126,oxidative stress presented and existed continually,and then the intracellular free calcium concentrate increased from (185.74±12.93)nmol/L to (493.00±58.71)nmol/L subsequently,the activity of Ca2+ ATPase decreased from 54.92±4.05 to 34.92±4.86,the mitochondrial membrane potential decreasedto 65%,and also the energy metabolize disorder,the cells presented apoptosisinthe end.The changed Bcl-2/Bax system involvedinthe apoptosis.Conclusions Prion protein106-126 peptide caninduce apoptosisin differentiated PC12 cells and presented cellulartoxicity definitely.It might be a perfect model to study the cellular toxicity of prion protein.Continual oxidative stress could causetheintracellularfree calcium concentrate and disturb the energy metabolize,and the apoptosis might be the end-result.The oxidative stress of might play a startup and important role.

Objective To customize the optimal plans for radioactive 125I seeds volumetric implants in selected regular target volumes.Methods 125I seeds were symmetrically and uniformly implanted into 3 spherical targets with the diameters of 1,2 and 3 cm and 7 ellipsoidal targets with the 3 dimensions of 1 cm×1 cm×2 cm,1 cm×1 cm×3 cm,1 cm×2cm×2cm,1 cm×2 cm×3 cm,1 cm ×3 cm×3 cm,2 cm×2 cm×3 cm and2 cm×3 cm×3 cm.The activity and inter-space of seeds were adjusted to obtain the conformal and uniform dose distribution,with the prescribed D90 (the dose delivered to 90％ of the targets) greater than 145 Gy.The inter-space of seeds was changed from 1 cm to 0.75 cm,to improve the conformity and uniformity of dose distribution.Plan quality was assessed using homogeneity index (HI),external index (EI) and conformal index (CI).The activity and number of seeds implanted were also recorded and compared.Results For the spherical target with the diameter of 1 cm,when seeds were implanted with the inter-space of 1 cm and 0.75 cm,the HI were 40.0％ and 55.9％,the EI were 98.3％ and 95.1％,the CI were 0.44 and 0.44,respectively.For the spherical target with the diameter of 3 cm and the target with the 3 dimensions of 1 cm × 2 cm × 2 cm,the implant with the inter-space of 1 cm provided better indices of HI,EI and CI than those with the inter-space of 0.75 cm.For the other targets,the implants with the inter-space of 0.75 cm provided better indices of EI and CI than those with the inter-space of 1 cm,although they displayed a little worse homogeneity in terms of HI.The activity per seed was 17.0-27.8 MBq and 30.0-58.8 MBq in the implants with the inter-spaces of 0.75 cm and 1 cm,respectively.2-10 more seeds were needed in the implants with the inter-space of 0.75 cm.Conclusions For the studied targets except the spherical targets with the diameter of 1 cm and 3 cm and the ellipsoidal target with the dimension of 1 cm × 2 cm × 2 cm,125I seeds implanted with the inter-space of 0.75 cm could provide more conformal dose distribution.It could be the better customized plans for uniformly spaced seed implantation.

Objective To investigate the influencing factors of cognitive impairment in patients with lacunar infarction (LI) and to analyze the features of cognitive impairment at different parts in patients with LI.Methods Patients with LI and normal controls were enrolled in the study.Mini-Mental Status Examination (MMSE) was used to evaluate cognitive impairment.California Verbal Learning Test (CVLT),Verbal Fluency Test (VFT),Benton Judgment of Line Orientation Test (BJLOT),Digit Symbol-Coding subtest (DSCT),Paced Auditory Serial Addition Test (PASAT),and Wisconsin Card Sorting Test (WCST)were used to evaluate attention,information processing speed,memory,verbal fluency,and executive function.Results A total of 98 patients with LI and 20 normal controls were enrolled.Of the 98 patients with LI,31 had cognitive impairment and 67 were cognitively normal.The proportions of hypertension,diabetes,multiple LI,and severe white matter lesions,as well as the level of low-density lipoprotein cholesterol in the CI group were significantly higher than those in the normal controls (all P ＜ 0.05).Multivariate logistic regression analysis showed that hypertension (odds ratio [OR] 5.391,95％ confidence interval [CI] 1.515-19.182; P=0.009),diabetes (OR 4.679,95％ CI 1.428-15.339; P=0.011),multiple LI (OR 6.458,95％ CI 1.797-23.213; P =0.004),and severe white matter lesions (OR 6.724,95％ CI 1.440-27.331; P=0.014) were the independent risk factors for the occurrence of cognitive impairment in patients with LI.Among the 98 patients with LI,56 were pure LI (no white matter lesions),but 5 of them were excluded because they could not complete neuropsychological tests.Finally,51 patients were enrolled and were compared and analyzed with the normal control group.Compared to the normal control group,the number of correct answers of WCST-64 in the corona radiata/semi-oval center group (n =15) reduced significantly,and the number of sustained errors increased significantly (P ＜ 0.05).The scores of verbal fluency,DSCT,PASAT,as well as the number of correct answers and the number of completed categories of WCST-64 decreased significantly in the basal ganglia group (n =20) (all P ＜0.05).The scores of short-term memory and delayed recall,as well as the scores of DSCT and PASAT decreased significantly in the thalamus group (n =16) (all P ＜0.05).Conelusiuns Hypertension,diabetes,multiple LI,and severe white matter lesions are the independent risk factors for occurring cognitive impairment in patients with LI.The corona radiata/semi-oval center infarction is easy to complicate with impaired executive function.Basal ganglia infarction is associated with verbal fluency,information processing speed,attention,and executive function impairment.The cognitive impairment of thalamic infarction is mainly manifested in the memory,attention,and information processing speed.

Objective To establish and stabilize a new HLA-B locus typing strategy, reference strand mediated conformation analysis(RSCA)system and to conform its advantages.Methods Of 27 hematopoitic stem cell transplant patients and 63 potential donors DNA samples were extracted from peripheral blood cells and HLA-B loci were both typed by RSCA and PCR-SSP methods. The (ambi)-(guous) results were identified by using DNA sequencing. Results Among 90 samples, 87/90 ((96.7) %) cases could be designated definitely, but one of them was disagreement with the SSP result which was confirmed by sequencing, and 67/90 ((74.4) %) cases could be typed to allelic level. 1/90 ((1.1) %) case could not be identified by RSCA for its bad PCR results. Only one allele of each 2 samples could be designated and the other could not be identified by RSCA, which were further confirmed by sequencing method, and the results confessed which were known as alleles, but there were no corresponding data in RSCA database. Twenty samples were randomly selected to identify the replication rate of RSCA, and the results demonstrated that the replication rate was 100 %. Among PCR-SSP typing results, about 10 % samples might be typed for 1-3 times to confirm their types. Conclusion RSCA had some advantages such as high resolution, high sensitivity, high accuracy, high replication, finding new alleles, large scale and low cost, and was especially suitable for unrelated donor-recipient (screening).

The total glycoside extracted from the root of cynanchum oiophy-llum schneid ( COS ) has anticonvulsant activity. Its effect on synap-tosomal amino acid contents and brain enzyme activities in mice were studied in this paper. After the ip administration of COS, the content of GABA was increased, and that of Glu and Asp decreased, in synaptosomes of both normal and TSC induced convulsant mice, while the content of Gin remained unchanged. A fall in the activities of GDH, glutaminase and asparaginase in whole brain was seen. No changes were observed in the activities of GPT, GOT and glutamine synthetase.

Objective To study the expression of transforming growth factor ?(TGF-?) and connective tissue growth factor(CTGF) in renal interslitium of patients with lupus nephritis(LN) and itssignificance. Methods Expression of TGF-?1, CTGF, CD3, CD68, proliferative nuclear cell antigen(PCNA) and ?-smooth muscle actin (?-SMA) in renal interstitium of LN patients were detected byimmunohistochemical staining. The degrees of staining in LN patients were compared to those in patients withminimal change disease (MCD) . Results Expression of TGF-?1 and CTGF in renal interstitium elevatedsignificantly in LN patients as compared to those in MCD patients. There was a positive correlation betweenthe expression of TGF-?1 and CTGF ( r = 0. 5316, P = 0. 023). The expression of ?-SMA and the numbersof CD3, CD68 and PCNA positive cells in renal intersitium were significantly increased in LN patients as compared with MCD cases. The expression of a-SMA in renal interstitium was correlated with the degree of renal interstitial lesions or fibrosis( r = 0. 436, P = 0.032) . Conclusion The increased expression ofTGF-?1 and CTGF in LN patients may be involved in the damage of renal interstitium and the infiltration ofinflammatory cells.

0 1). (4)75 2% of all the patients in DM group showed one or more abnormalities in MCV or F wave parameters, and electrophysiological abnormalitis correlated with, or precede to clinical findings in 175 of 190 patients (92 1%). Conclusion MCV and F wave parameters are sensitive measures for detection of DPN. Among these parameters, FwPL, F MIPL from all the four nerves are the most sensitive. To improve diagnostic accuracy, all the MCV and F wave parameters recorded should be considered.