The pathological changes of high intensity focused ultrasound(HIFU) for organ ablation involve three periods:acute stage,subacute stage and chronic phase.The pathological characteristics include hyperemia,edema,and coagulative necrosis of tissues,tissue proliferation,recovery,the infiltration of fibroblast and formation of scar tissue.This paper introduced the bioactive mechanism of HIFU,effects of HIFU on human and animals,indicating HIFU technique can damage target organs and tissues of human and experimental animals,which has specific biological effect.And it has great potentials to treat benign and malignant tumor and chronic pain.

Cell Differentiation ; drug effects ; Cells, Cultured ; Fetal Blood ; cytology ; Fibroblast Growth Factor 4 ; pharmacology ; Hepatocyte Growth Factor ; pharmacology ; Hepatocytes ; cytology ; Humans

Alleles ; Gene Frequency ; Genotype

Objective To analyze the factors which influence the present nursing management ability in the alliance and to provide theoretical evidences and methods to improve the management. Methods 120 nursing administrators from 7 hospitals in the alliance were selected in convenience sampling for the site survey with customized questionnaires on nursing management ability appraisal. Results The valid return rate of the questionnaires is 100%;the average score of all respondents is 82.84±10.10;the differences in nursing management between the leading hospital and its members are statistically significant (P <0.05)while the differences among the members are not.Conclusion The leading hospitals play a very important role in improving the nursing management ability and administration in the alliance,which should integrate and leverage leadership roles to develop high quality nursing management among the hospitals in the alliance.

BACKGROUND:Endothelial progenitor cells are recruited into local vascular injury under the injury-induced stimulation, and then differentiate into mature endothelial cells that are thereby involved in angiogenesis and endothelial repair. OBJECTIVE:To investigate whether endothelial progenitor cells can al eviate renal injury and improve renal function of ischemia/reperfusion injury (I/R) rats. METHODS:Peripheral blood samples extracted from Sprague-Dawley rats were used to isolate and culture endothelial progenitor cells using density gradient centrifugation. Twenty-two male Sprague-Dawley rats were randomized to three groups:I/R group, normal control group, and endothelial progenitor cells group. In the I/R and endothelial progenitor cells groups, the right kidney was removed and the renal artery and vein of the left kidney were occluded for 40 minutes to establish I/R models in the rats, and then endothelial progenitor cells (5×109/L, total y 1 mL) or solvent was transplanted via the artery of the left kidney into the left kidney. In the normal control group, the experimental procedure was same as that in the I/R group except for occlusion of the artery and vein of the left kidney. Renal and blood samples from three groups were col ected at day 1 after operation. Peripheral blood CD34 and vascular endoethelial growth factor receptor 2 expressions were determined using flow cytometry and immunofluorescence methods, serum creatinine and urea nitrogen were tested, and immunohistochemistry observation was used for CD34 observation. RESULTS AND CONCLUSION:Compared with the normal control group, serum creatinine and urea nitrogen levels were significantly increased, and tubulointerstitial CD34 expression was decreased in the I/R group (P<0.05). Endothelial progenitor cells treatment largely decreased the levels of serum creatinine and urea nitrogen, and increased CD34 expression (P<0.05). These findings indicate that transplantation of endothelial progenitor cells contributes to renal protection in I/R rats.

BACKGROUND:Studies have shown that malnutrition was associated with death of elder people after fracture of hip, but there were no above-mentioned reports in China.
OBJECTIVE: To retrospectively analyze the relationship of blood albumin, total lymphocyte count and hemoglobin levels to prognosis when elder patients with fracture of hip were on admission.
METHODS:130 elderly patients with hip fractures aged ≥ 70 years were included underwent either total hip arthroplasty or bipolar arthroplasty. Admission serum albumin, total lymphocytecount and hemoglobin levels were recorded. The patients were fol owed up for 1 year or til the death. Survival data were available in 92 patients. Rates of survival were calculated by the Kaplan-Meier method and the Log-Rank test. Cox proportional hazard regression model received prognostic multivariate analysis.
RESULTS AND CONCLUSION:Of the 92 patients, albumin<35 g/L in 20 cases (22%), total lymphocyte count<1.5×106/L in 67 cases (73%), and hemoglobin<120 g/L in 56 cases (61%). Kaplan-Meier method showed that the survival rate of patients with normal albumin (≥ 35 g/L) was significantly higher than those with reduced albumin (<35 g/L) (P<0.01). No significant difference was detected in the survival rate of patients with normal total lymphocyte count (≥ 1.5×106/L) and reduced total lymphocyte count (<1.5×106/L) (P>0.05). The survival rate of patients with normal hemoglobin (≥ 120 g/L) was significantly higher than those with decreased hemoglobin (<120 g/L) (P <0.05). Cox multivariate analysis displayed that albumin decrease is an independent prognostic factor for death of patients with hip fracture. Results indicated that the prognosis of elder patients with hip fracture was strongly associated with their nutritional conditions. Albumin and hemoglobin levels at admission can be considered as important indexes for judging patient’s prognosis.

Objective To evaluate the role of lung ultrasound in the diagnosis of neonatal pneumonia.Methods From April to October 2015, 100 neonates admitted to the Neonatal Department of Xi′an Children′s Hospital underwent lung ultrasound, using the 12 regions method. All intercostal spaces of the upper and lower parts of the anterior, lateral, and posterior regions of the left and right lung were examined. Arterial blood gas analysis parameters of each case were recorded at the same time, including arterial partial pressure of oxygen (PO2), arterial partial pressure of carbon dioxide (PCO2), pH value and oxygen saturation (SO2). A skilled sonographer analyzed the ultrasound images before being aware of the patient′s clinical condition. According to the ifndings, the patients were classiifed into 2 groups: neonatal pneumonia group and non-pneumonia group. All the patients with neonatal pneumonia underwent lung ultrasound score (LUS), and the correlation between LUS and PO2, PCO2, pH value and SO2 was analyzed.Results A ifnal diagnosis of neonatal pneumonia was conifrmed in 62/100 patients. The ultrasonographic manifestations of neonatal pneumonia were as follows: rocket sign (33/62 patients, 53%), ground-glass sign (35/62 patients, 56%) , waterfall sign (31/62 patients, 50%), white lung (8/62 patients, 13%), subpleural lung consolidation (35/62 patients, 56%), pleural line abnormalities (26/62 patients, 41%), pleural effusion (7/62 patients, 11%), atelectasis (3/62 patients, 4%) , and pneumothorax (1/62 patients, 1%). The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of lung ultrasound in the diagnosis of neonatal pneumonia was 96.77%, 86.84%, 93.00% of 92.30%, of 94.28%, respectively. The correlation coefficients between LUS and PO2, PCO2, pH value, SO2 were-0.82, 0.64,-0.58,-0.74,P<0.05, respectively.ConclusionLung ultrasound is a reliable tool for diagnosing neonatal pneumonia with high sensitivity, with high practical value in assisting clinicians to carry out appropriate treatment in combination with LUS.

The anti-endotoxic effect of syringic acid (SA) isolated from Radix Isatidis (Banlangen, BLG) was studied. SA was extracted and isolated from BLG and diluted into 1% solution. The content of SA-pretreated endotoxin (ET) was quantitatively determined using Limulus test. The ability of fever induction of ET pretreated with SA was measured using endotoxin-induced fever test in rabbits. The LPS-induced death in mice pretreated with and without SA was compared. Results showed that after pretreatment with SA, 83.16% of ET was destroyed, the ET-induced fever in rabbits relieved markedly and the LPS-induced death rate in mice dropped from 68% to 20%. It was concluded that SA isolated from BLG had anti-endotoxic effects.
Drugs, Chinese Herbal/*pharmacology ; Endotoxemia/blood ; Endotoxins/*antagonists & inhibitors ; Escherichia coli ; Gallic Acid/*analogs & derivatives ; Gallic Acid/*pharmacology ; Isatis/*chemistry ; Limulus Test ; Plant Roots/chemistry

Objective To investigate the application validity of the adjusted norm of WAIS-RC in the identification of intellectual disability.Methods128 patients with mental retardation (MR) were chosen for identification of the intellectual disability, measured their full scale IQs (FIQ) according to the original norm, calculated their four-subtest short forms FIQ respectively by Tellegen way according to the original standard norm and the new adjusted norm, then compared and analyzed the outcomes.ResultsThe short forms FIQ according to the original and the new norm had high correlation to full forms FIQ (P<0.01). The average of the short forms FIQ was higher than full forms FIQ according to the original norm (P<0.01), showing no significant difference according to the new norm(P＞0.05). In severe intelligence defected group according to full forms IQ, the grade classification corresponding rate of short forms FIQ according to the new norm was 0.00%, as well as the original norm. That in medium and mild intelligence defected groups was higher than that of original norm(P＜0.01).ConclusionThe test validity of adjusted norm short forms of WAIS-RC is superior to the original norm, but not suitable for severe intelligence defected.

To investigate the induction of apoptosis of mouse colonic adenocarcinoma CT26 cells by recombinant Clostridium difficile toxin B (rTcdB), CT26 cells were exposed to different concentrations of rTcd B. Inhibition of cell proliferation was measured by MTT assay. The activation of Caspase 3 was measured by colorimetric method. Cell morphological analysis and flow cytometry were performed to confirm cell apoptosis. rTcd B inhibited the proliferation of CT26 cells in a timeand dose-dependent manner. Caspase 3 activity in CT26 cells was elevated remarkably after rTcd B exposure for 6 h, 12 h, 18 h or 24 h, as compared with the control group. Morphological changes were observed by fluorescence microscopy. The exposure of rTcd B to CT26 cells induced a timeand dose-dependent apoptotic cell death as determined by flow cytometry analysis. The results showed that recombinant Clostridium difficile toxin B induced apoptosis of CT26 cells.