5 mm had surgery in 100%. Conclusion Most severe CHD could be detected prenatally by fetal echocardiography, and the pregnancy should be terminated. The critical NCHD should be diagnosed by echocardiography for corrective or palliative surgery as early as possible in the first days of life. In mild cases of left to right shunts may close spontaneously, they should be followed up regularly.

Objective To establish a noninvasive method for prenatal genetic analysis by using maternal serum and apply the method in fetal sex determination,paternity testing. Methods Samples of maternal serum from 53 pregnant women (11 to 36 weeks of gestation) were collected. The DNA extracted from each sample was amplified by using"Y-PLEX 6" amplification kit .which enabled the simultaneous analysis of six Y-STR loci including DYS393.DYS19.DYS389 II, DYS390, DYS391 and DYS385. The PCR products were detected by using ABI PrismTM 377 Sequencer and genotyped by related analysis software. Results (1) Y-STR specific alleles were detected in the maternal sera of all 29 mothers bearing male babies. Among the six Y-STR loci,specific alleles were detected in 29/29 at DYS393 locus,in 18/29 at DYS19 locus and in 10/29 at DYS390 locus. (2) Y-STR specific alleles were not detected in maternal sera of 24 pregnant women bearing female babies. (3) According to the presence of specific alleles at DYS393 locus and the value of allelic peak height and peak area, the accuracy of fetal sex determination was 100% . (4)The observed Y-STR alleles of each prenatal specimen from pregnant women with male fetuses were the same as the results of their husbands. Conclusion The assay of highly polymorphic Y-STR genotyping system developed by the authors provided a sensitive, accurate and non-invasive method to prenatal diagnosis. Our results demonstrate that fetal sex can be accurately determined and imply that paternity testing could be performed for pregnant women carrying male fetuses.

Objective To construct the immune genes expression profile database of multiple sclerosis (MS) and to screen the high immune related candidate genes by using microarray analysis Methods Polymerase chain reaction (PCR) products on behalf of 484 immune related genes from mixed tissue library were assembled on the modified Oako glass slide The general RNA from MS patients and normal persons lymphocytes was transcripted to cDNA by RT PCR and labelled with cy 3 and cy 5 The two probes were mixed and hybridized with the above mentioned gene chips Scan array 4000 was used for scanning the hybridizing signals and GenePix Pro3 0 for date analysis Results Of the total 484 double genes monitored,22 genes of group one showed changes in expression level of the ratio outside 0 5 and 2.0;27 genes differ in group 2;72 genes change in group 3 With the same consistent gene ID of the double genes, the group one was 6,the group tow was 9 and the group three was 30 Conclusions These results show that the different expression of immune related genes might occur between MS patients and normal persons It might also afford a view of the changes that these genes should be probably related to the occurrence, development or progress of MS The cell immune related genes might be the important and most immune related genes involved in MS pathogenesis The results suggest the deeper insights into the mechanism,relapsing and treatment of MS

Objective To construct the genes expression profile database of experimental autoimmune encephalomyelitis (EAE) mice model and to screen the high candidate genes with microarray analysis. Methods Polymerase chain reaction (PCR) products on behalf of 4 096 genes from mixed mice tissue library were assembled on the modified Oako glass slide. The general RNA from 6 EAE mice model and 6 normal mice head was transcripted into cDNA by RT-PCR and labelled with cy-3 and cy-5.6 groups each consist one EAE mice and a control. These two probes were mixed and hybridized with the above mentioned gene chips. Scan array 4000 was used for scanning the hybridizing signals and GenePixPro 3.0 for date analysis. Results Of the total 4 096 genes monitored, 43 genes in group one showed changes in expression level of the ratio outside 0.5 and 2, 30 genes differed in group two, 176 genes changed in group three, 76 in group four, 294 in group five and 129 in group six. Conclusions The results showed the consistent different genes expression throughout the EAE mice model. The genes related to immune, cell structure, cell cycle, ion channel, signal transduction, protein synthesis and metabolism are involved in EAE pathogenesis. The results provide deeper insights into the mechanism of EAE and multiple sclerosis.

BACKGROUND: Neuroprotective role of hypothermia on cerebral ischemic-reperfusional impairment has been long acknowledged. Since general hypothermia is complicated and unfit for observing postoperative consciousness and neurological function, it is of important significance to explore novel methods of focal cerebral hypothermia.OBJECTIVE: To study the neuroprotective effect of lateral ventricle infusion of low-temperature fluid on ischemic neurons of middle cerebral artery (MAC) occlusion models established on New Zealand rabbits.DESIGN: A randomized case-control study based on experimental animal models.SETTING: Neurosurgical department and pathological department of a general military hospital of Chinese PLA.MATERIALS: This study was carried out at Neurosurgical Laboratory of Nanjing General Hospital, Nanjing Military Area Command of Chinese PLA. Altogether 18 healthy New Zealand male rabbits, weighing from 2. 8 to 3.2 kg, were selected 4 - 6 months after birth, and randomly divided into occlusion group, hypothermia group and control group.INTERVENTIONS: Cerebral focal ischemic-reperfusional model was established on the New Zealand rabbits through MCA occlusion for 2 hours followed by reperfusion for 24 hours.MAIN OUTCOME MEASURES: Scores for neurological function, water content in the left and right brain, pathological changes of nerve cells in the left MCA supplying region.pothermia group, significantly higher than that in occlusion group(7.58 ± 0.58 )( P ＜ 0.01 ), but no significant difference could be observed in contrast with brain was(81.64 ± 0.82)% and (79.26 ± 1.30)% in occlusion and hypothermia groups with significant difference between them( P ＜ 0.05), and it was significantly different between the left side [ (81.64 ± 0. 82 )% ] and opyknosis and deep staining could be observed in nerve ganglion cells in occlusion group under optical microscope, but no obvious pathological changes were observed in MCA supplying brain regions in hypothermia group.CONCLUSION: Permanent infusion of low-temperature fluid into the lateral ventricle plays an important neuroprotective role by attenuating cerebral ischemic-reperfusional impairment and improving post-ischemic neurological functions.

Objective To explore the appropriate nursing care of acute hyperlipidemic pancreatitis and increase nursing level.Methods The clinical data of 3 cases of hyperlipidemic pancreatitis misdiagnosed as acute appendicitis were analyzed retrospectively and the nursing experience was summarized.Results The blood sample of all 3 cases represented dramatically high level of serum triglyceride (14.1～61.0 mmol/L).Obvious inducing factors were observed in one case.Besides upper abdominal symptom and physical sign continued in spite of the right lower abdominal discomfort,ascites was discovered by early B-ultrasound.There was no significant increase of serum or urine amylase.After correct diagnosis,all of the 3 cases recovered well by close observation,mental nursing,anti-hyperlipidemic nursing,drainage nursing and health education.Conclusions The knowledge of hyperlipidemic pancreatitis should be well understood during nursing practice.Comprehensive nursing evaluation and close observation can help doctors to analyze and estimate the disease.Integrated nursing techniques can accelerate the recovery of the patients.Health education,anti-hyperlipidemic therapy,and removal of the inducing factors are the keys of prevention.

Objective: To investigate the apoptotic effects and its mechanisms on K562 cells caused by Interferon-alpha (INF-?) and Cytarabine (Ara-C). Methods: The variation of both morphology and inhibitory rate of K562 cells was observed in culture medium with IFN-? and various concentrations of Ara-C at different time in vitro. The variation of telomerase activity and P53 protein expression were detected before and after apoptosis occurred. Results: INF-? and Ara-C used concurrently could cause apoptosis and inhibit the growth of K562 cells as well as decrease the telomerase activity and increase P53 protein expression significantly. All these processes showed both in time- and dose-dependent manner. Conclusions: INF-? and Ara-C used concurrently can inhibit the growth of K562 cells and induce apoptosis, inhibiting the telomerase activity and increasing the expression of P53 protein may be one of the most important mechanisms.

Objective: To explore the effects of continuous trickle of low temperature liquids through the lateral ventricle on neural cell apoptosis after rabbit local cerebral ischemia/reperfusion. Methods:The middle cerebral artery (MCA) of New Zealand rabbit was clipped by micro aneurysm clip for 2 hours and reperfused for 24 hours. Immediately after clipping the MCA, we trickled the left lateral ventricle continuously with low temperature liquids(22℃) to decrease the brain temperature to mild hypothermia (33℃-35℃)and maintained for 2 hours. After reperfusion for 24 hours , we assessed TUNEL method to determine the apoptotic cell rate in the sham-operated group, the control group and the mild hypothermia group respectively. Results:The apoptotic cell rate of the cortex tissues accommodated by MCA in the mild hypothermia group was obviously lower than that in the control group(P0.05). Conclusion:Trickling ventricle with low temperature liquids could decrease the apoptotic cell rate and alleviate cerebral ischemia/reperfusion injury.

Objectives:To explore the protective effects of continuous trickle of low temperature liquids through the lateral ventricle on neurons after rabbit local cerebral ischemia reperfusion. Methods: The middle cerebral artery (MCA) of New Zealand rabbit was clipped with micro aneurysm clip for 2 hours and reperfused for 24 hours. Immediately after clipping the MCA, we trickled the left lateral ventricle continuously with low temperature liquids to decrease the brain temperature to mild hypothermia(32-35℃) and maintained for 2 hours. After reperfusion for 24 hours, we assessed the animal's neural deficits, observe the pathology of the ischemic brain tissues dyed by HE and determined the dry wet ratio for brain edema in the sham operated group, the control group and the mild hypothermia group respectively.Results:①The grades of neural deficits in mild hypothermia group were obviously lower than that in the clipping group( P 0.05 );②The dry wet ratios were obviously different in the mild hypothermia group and clipping group;③ Pyknosis and dense dying by HE were observed in the neural nuclei of ischemic cortex tissues of the clipping group, but no obvious changes were observed in the mild hypothermia group. Conclusions:Trickling ventricle with low temperature liquids could alleviate cerebral ischemia reperfusion injury, ameliorated neural deficit after ischemia reperfusion and were protective on the brain.

AIM: To study the survival, transfer and distribution of bone marrow CD34+/CD45+ cells from transgenic GFP mouse after transplanted into the completed transversional spinal cord rat model. METHODS: The bone marrow cells isolated from transgenic GFP mice were cultured in vitro. The cultured cells were identified by anti-CD34 and anti-CD45 monoclonal antibodies, and were transferred into the end of transection spinal cord. Paraformaldehyde was infused into the left ventricle of the rat model at the 24 h, 48 h, 1 week, 2 weeks, 4 weeks and 8 weeks after cell transplantation. Through sank and frozen, the spinal cord was sectioned at 10 ?m thickness. The green fluorescence positive cells were observed under the fluorescence microscope. CD34+/CD45+ cells were identified by immunohistochemistry staining. RESULTS: Green fluorescence positive cells were found at the head and the end of the completed transection part of spinal cord. Most of the green fluorescence positive cells were distributed in the gray substance of spinal cord. CD34+/CD45+ cells were found by immunohistochemistry staining. CONCLUSION: CD34+/CD45+ cells survived in spinal cord of SD rat, and migrated to the head of the transection part. The distance of migration was extended by the time.