Objective To investigate the effects of different modes of mechanical ventilation on lung function during open heart surgery in children with pulmonary hypertension (PH). Methods Twenty-four patients with moderate PH aged 3 mon-12 yr 2mon (group M) and twenty-four patients with severe PH aged 3 mon-7yr 9mon (group S) were further divided randomly into 3 subgroups based on the modes of mechanical ventilation used: pressure-controlled ventilation(PCV) only and alveolar pressure (Palveo) was maintained at 0 cm H2O during CPB (group M1/S1 n = 8); PCV + PEEP (2 cm H2O) and Palveo was maintained at 2 cm H2O during CPB (group M2/S2 n = 8); and PCV+ PEEP (4 cm H2O) and Palveo was maintained at 4 cm H2O during CPB (group M3/S3 n=8). The patients were premedicated with atropine 0.01 mg ?kg -1 and midazolam 0. 1 mg?kg-1 . Anesthesia was induced with fentanyl 20?g?kg-1 and vecuronium 0. 1 mg?kg-1 and maintained with vecuronium infusion(70?g?kg-1?h-1 ) and inhalation of N2O-O2 and isoflurane. The children were mechanically ventilated after intubation and the ventilatory parameters were VT = 10-12 ml ?kg-1, F = 20 bpm and I : E = 1: 2. Lungs were lavaged and 2-3 ml of aspirate were taken for determination of surfactant. Total protein (TP), total phospholipid -(TPL), saturated phosphatidylcholine (Sat PC) and respiratory system compliance(Crs) was measured before skin incision( T0 ), before CPB (T,), at the end of CPB ( T2) and at the end of surgery(T3 ) . Results (1) Crs decreased significantly at T2 and T3 as compared with that at T0 and T1 in group M1/S1 and M2/S2 but in group M3/S3 there was no significant difference in Crs between T0, T1 and T2-3. (2) Sat PC/TPL and Sat PC/TP decreased significantly after CPB (T2, T3 ) in group M,/S, and M2/S2 but in group M3/S3 there was no significant difference in Sat PC/TP and Sat PC/TPL between T0-1 and T2-3. Conclusion PEEP 4 cm H2O can effectively prevent postoperative lung function from worsening in children with pulmonary hypertension undergoing open heart surgery with CPB.

Objective To compare the difference of MRI characteristics of pilomyxoid astrocytomas (PMA)and pilocytic astrocy-tomas (PA)in hypothalamus/optic chiasma region.Methods The MR images and clinical materials of 20 PMAs and 20 PAs proved by pathology were reviewed retrospectively.Imaging characteristics and clinical materials were analyzed,including age,gender, size,the signal characteristics of the tumor,growth,enhancement pattern,hydrocephalus and leptomeningeal dissemination.Results There were statistically significant differences in streaky low signal intensity among the high intensity of T2 WI and leptomeningeal dissemination between PMA and PA (P <0.05).However,no statistically significant differences were found in the other character-istics and clinical materials between the two types of tumors.Conclusion PMA and PA in hypothalamus/optic chiasma region are difficult to make differential diagnosis.The streaky low signal intensity among the high intensity of T2 WI and more frequent lepto-meningeal dissemination are helpful differential features of PMA as compared to PA.

Objective To explore the expression level of calmodulin (CaM) in non-small cell lung carcinoma (NSCLC) and its clinical significance. Methods The expression levels of CaM and CaM mRNA were detected in 64 human NSCLC samples by immunohistochemistry and in situ hybridization, respectively. Results The positive rates of CaM mRNA and CaM protein were 60.4% and 65.6%, respectively. The positive rates of CaM mRNA in low-differentiated samples were significantly higher (70.0%) than those in moderate- to well-differentiated samples (45.3%). The expression rates of CaM in Ⅲ-Ⅳ stages (81.8%) were significantly higher than those inⅠ-Ⅱstages (51.6%) (P

Objective To explore the relationship of the expression levels of laminin (LN) and calmodulin (CaM) in non-small cell lung carcinoma (NSCLC) with its metastasis and prognosis. Methods The expressions of CaM and LN were detected in 64 human NSCLC samples by immunohistochemistry. Results The expressions of LN and CaM were closely associated with the differentiation and the grades of NSCLC as well as the lymph node metastasis. The positive rates of LN in adenocarcinoma and squamous cell carcinoma were 45.1% and 69.7 (P0.05), respectively. The positive rate of LN protein in low-differentiated samples (36.6%) was significantly lower than that in moderate- to well-differentiated samples (61.7%), but the positive rates of CaM were 73.3% in low-differentiated samples and 41.1% in moderate- to well-differentiated samples (P

Acupuncture Therapy ; methods ; Adult ; Ankle ; Female ; Humans ; Male ; Middle Aged ; Stress Disorders, Traumatic, Acute ; therapy ; Wrist

Objective To detect the expression of Zbtb7 gene in Phorbol esters(PMA) induced differentiation of leukemia cell lines.Methods 50 nmol/L PMA was used to induce the differentiation of U937 and K562 cell lines.The expression of Zbtb7 was detected by real-time PCR in the cells after induction on day 0,1,3 and 5,respectively. Results The expression of Zbtb7 in leukemia cell lines was markedly enhanced after treated by PMA(P

BACKGROUND: lead can facilitate the active oxygen-derived free radicals formation, and make many tissue systems in oxidative stress situation especially during the process of lipid peroxidation in cerebral tissue.OBJECTIVE: To establish the dying lead model by making rat offspring to expose to lead during pregnant and breast-feed period, and observe effect of dying lead on the lipid peroxidation in central nervous system of different developmental stages,DESIGN: Randomized controlled study.SETTING: Liaoning Woman and Children Health Care College and Liaoning Tumor Institute.MATERIALS: The experiment was carried out at the Laboratory of China Medical University from June to August 2003. Totally 150 adult Wistar rats was utilized for the experiments. The ratio between female and male was 2:1. Seven days after feeding respectively, female and male rats were put together with the ratio of 2:1. The day in which the sperms were found in vaginal plug or in vaginal secretion was considered gestational day (GD)0 day. And 100 gestational rats were randomly divided into 4 groups, with solution). The lead-treated animals received solution containing lead acetate from GD 0 day, while the control animals received distilled water 5 mL from GD 0 day too, until 21 days after rat offspring giving birth.METHODS: Tissue sampling at the 21st day after rat offspring giving birth, the blood collected by head cutting of 10 rats in each group was used to determine blood lead level; brain tissue of 15 rats in each group was used to determine brain lead level, and the rest was made to be equal slurry to determine the level of lipid peroxidase (LPO), glutathione (GSH),and the activity of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-PX).and activity of SOD, GSH-PX and CAT of 21-day-old rat offspring among different groups.RESULTS: Data of totally 100 infant rats was entered the final analysis.birth: Lead content of blood and brain of 21-day-old rats offspring in 0.5, 1and 2 g/L lead-treated groups were higher than those in control group observably (P ＜ 0.01), and increased along with increase of the dose of expowas higher than that in control group [(34.56±6.96), (38.76±11.11),(23.33±5.23) mmol/g, P ＜ 0.05-0.01], but activity of SOD in those two groups was lower than that in control group [(423.25±157.70),(426.92±161.53),(542.78±97.69) μkat/g, P ＜ 0.05-0.01].CONCLUSION: Lead, metal toxicant, at moderate and high dosages can induce damage of nervous system during development through accelerating lipid peroxidation of cerebral tissue.

Objective To investigate the treatment effect of atorvastatin in patients with soft carotid atherosclerotic plaques using contrast-enhanced ultrasound(CEUS).Methods Sixty patients with acute cerebral infarction and soft carotid atherosclerotic plaques were divided into two groups:high-dose atorvastatin treatment group(40 mg daily)and control group without atorvastatin treatment.The same soft carotid plaque in each patient was examined before and after 3-months'treatment respectively using CEUS.The parameters of CEUS were compared between pretherapy and post-treatment,including arrived time (AT),time to peak(TTP),peak intensity(PI),based intensity(BI)and enhanced intensity(EI,EI=PI-BI).Results EI of carotid plaques in treatment group was decreased significantly than that in control group after three months'treatment(P＜0.05).While the difference of EI in control group has no significance between pre-therapy and post-treatment(P＞0.05). Conclusions The neovascularization in soft carotid plaques was reduced after 3-months'treatment of a high dose atorvastatin.CEUS can be used to evaluate the effect of atorvastatin in treatment of soft carotid plaques.

Objective To examine the impact of chronic diseases and blood biomarkers on daily living activities of hospitalized nonagenarians.Methods We used data from 161 nonagenarians who had been admitted to the Department of Internal Medicine from January to December 2014.Patients were divided into three groups:the mild dependence group,the moderate dependence group and the severe dependence group,based on the Barthel Index.Data were collected from patients' medical records.Differences in chronic disease characteristics and biomarkers between the three groups were compared and multiple regression and correlation analysis was also carried out.Results Compared with the mild independence group,patients in the severe dependence group were older(92.6 ± 2.6 vs.91.2 ±1.7 years,P＜ 0.05)and had lower levels of sodium(138.0 ± 5.0 vs.140.9 ± 3.7 mmol/L),albumin(35.4 ± 4.2 vs.39.2 ± 4.3 g/L),prealbumin,total cholesterol,low density lipoprotein cholesterol,and total iron binding (34.8 ± 7.9 vs.43.2 ± 7.4 mmol/L) respectively,P＜ 0.01 or 0.05),and higher levels of high-sensitivity C-reactive protein [22.0 (31.6) vs.2.6 (6.6) g/L,P＜ 0.01].Multivariate linear regression showed that albumin (β=0.23,P =0.011),sodium (β=0.21,P=0.003),total iron biding capacity(β=0.26,P=0.003),and age (β=-0.15,P =0.036) were significantly associated with daily living activities.Conclusions Higher proportions of hospitalized nonagenarians suffer multiple diseases.Activities of daily living are significantly associated with albumin,total iron biding capacity,and sodium.While the number of diseases has no influence on activities of daily living,good nutritional status and electrolyte balance are very important to nonagenarians.

Objective:To study the anti-proliferation effects of a heat shock protein 90(Hsp90) inhibitor,17-allylamino-17-demethoxygeldanamycin(17-AAG),on a human breast cancer cell line,SKBr3,and related mechanism.Methods:MTT assay was used to detect the growth inhibition of SKBr3 cells.Cell cycle and apoptosis were analyzed by flow cytometry.Alteration of human epidermal growth factor receptor 2(HER2) in SKBr3 cells being treated with 17-AAG were measured by immunohistochemistry.Results:17-AAG significantly inhibited growth of SKBr3 cells in vitro in a dose-dependent manner with an IC_(50) value at 3.09 ?g/ml.Under concentrations of 0,0.625,1.250,2.500,5.000 and 10.000(?g/ml,)the percentages of cell apoptosis were(1.03?0.08)%,(3.68?0.67)%,(7.06?1.12)%,(11.23?1.36)%,(20.32?1.98)%,and(31.65?2.96)%;the percentages of cells at G_(0)/G_(l) phase were 58.61%,54.34%,49.55%,43.73%,35.52%,and 27.46%;the percentages of cells at S phase were 29.57%,25.21%,19.65%,22.98%,19.71%,and 15.46%;the percentages of cells at G_(2) /M phase were 11.82%,20.45%,30.18%,33.29%,44.77%,and 57.08%,respectively.The level of HER2 expression in SKBr3 cells being treated with 17-AAG,compared to that in control cells,was reduced significantly.Conclusion:17-AAG can inhibit the growth of human breast cancer cell and enhance its apoptosis.It may be a promising anti-tumor drug.