Child ; China ; epidemiology ; Continuous Positive Airway Pressure ; Humans ; Sleep Apnea, Obstructive ; diagnosis ; epidemiology ; therapy ; Tonsillectomy

Objective To explore effect of Simotang on gastrointestinal motility and expression of vasoactive intestinal peptide(VIP) in the hypothalamus, spinal cord and duodenum of chronical stressed mice. Methods Mice were randomly divided into normal, stress and Simotang group( n= 10 in each group), and given a variety of unpredictable chronic mild stress. After 21 days gastric emptying and intestinal propulsion function were measured,the expression of VIP was detected by immunohistochemistry and RT-PCR. Results Compared with mice in normal group( (49.81 ± 8.56)%; (51.02 ± 5.11 )% ), chronic stress increased gastric residual rate( (61.53 ±8.71 ) %; P ＜ 0.05 ) and reduced small intestine propulsion rate ( ( 31.79 ± 2.38 ) %; P ＜ 0. 05 ). There were differences in expressions of VIP positive cells and mRNA in duodenum( (8.8 ± 1.1 )/mm2 and(0. 58 ±0.03) ),hypothalamus ( ( 12.9 ± 1.5 )/mm2 and (0.81 ± 0. 07 ) ) and spinal cord ( ( 12.1 ± 1. 2)/mm2 and (0.76 ± 0.02) )in chronic stress group compared with normal group( (6.5 ± 0. 9)/mm2 and (0.43 ± 0. 04);( 10.8 ± 1.3 )/mm2and (0.57 ± 0.03 ); (9.3 ± 1.5 )/mm2 and (0.53 ± 0. 02 ) respectively). There was not difference in gastric residual rate (52.93 ± 9.15 )%, small intestine rate(48.98 ± 4.38 )% and expressions of VIP positive cells and mRNA in duodenum ( (6.7 ± 0.9)/mm2 and (0.48 ± 0. 05 ) ), hypothalamus ( ( 10. 6 ± 1.4 )/mm2 and ( 0. 61 ± 0. 05 ) )and spinal cord ( (9. 1 ± 1.3)/mm2 and(0.55 ± 0.05 ) ) in Simotang group compared with those in normal group (P ＞ 0.05 ), but there were decreased compared with those in chronic stress group (P ＜ 0.05 ). Conclusion Simotang can regulate expressions of VIP in duodenum, hypothalamusand spinal cord in chronically stressed mice.

Objective To study the value of ultrasound-guided fine needle aspiration (FNA) in the diagnosis of axillary lymph node metastasis in breast cancer,and to compared with conventional ultrasound in the diagnosis of metastatic lymph nodes of breast cancer.Methods Five hundred patients were enrolled into study prospectively from our hospital.The set of standard for patients into study:patients were diagnosed by BI-RADS and classified into class 4 or class 5 preoperative,the maximum diameter of the tumor was less than 2 cm,and there was no case of distant metastasis.Ultrasound guided FNA was performed in each case,and the results were compared with conventional ultrasound diagnosis results,using pathological findings as gold standard.Results The sensitivity,specificity,positive predictive value,negative predictive value and accuracy in the diagnosis of axillary lymph node by conventional ultrasound were 60.6%,67.6%,77.2%,48.7%,and 63.1%,respectively,and by ultrasound-guided FNA were 78%,100%,100%,71.6%,and 85.6%,respectively.There were significant differences between the two diagnostic methods statistically(χ2=113.2,P<0.001).Conclusions Ultrasound-guided FNA can effectively reduce the number of sentinel lymph node biopsy,which displays a certain clinical value.

Female ; Follow-Up Studies ; Hearing Loss ; etiology ; Hearing Tests ; Humans ; Infant, Newborn ; Male ; Risk Factors

BACKGROUND:Caveolin-1 is expressed in mammalian brain and involved in the normal development of the brain, which can affect the proliferation of neural stem cells in the brain. OBJECTIVE:To acquire neural stem cells from caveolin-1 knockout embryonic mice in vitro and study their biological characteristics. METHODS:The whole brain was separated from C57BL/6 mice and caveolin-1 knockout C57BL/6 mice respectively at encyesis 14-16 days. Single cellsuspension was obtained by enzyme digestion, and cultured in the conditioned medium of neural stem cells. Fol owing 7 days of primary culture, the cells were induced in Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12 containing 10%fetal bovine serum for 7 days. RESULTS AND CONCLUSION:The major cells of the cellsuspensions from the fetal mouse brain were dead at 1 day after culture, and some single cells floated in the medium and their transmittance were better, and then they gradual y formed multicellular bal s after 3 days. A smal amount of cells were adhered at the bottom of culture plate after passage, and a great amount of cellbal s appeared after 7 days. The proliferation rate of neural stem cells from caveolin-1 knockout mice was higher than that from normal mice. The cellbal s were nestin-positive and their differentiated cells was positive for neurofilament 200, glial fibril ary acidic protein or O4, respectively. Al of the cells from normal mouse brain were positive for caveolin-1, but the cells from caveolin-1 knockout mice were negative for caveolin-1 by immunocytochemistry. Moreover, the speed of cellbal formation and the number of cellbal s in neural stem cells from caveolin-1 knockout mice were better than those from normal mice. Caveolin-1 negative neural stem cells were cultured successful y from caveolin-1 knockout mouse brain, and the results show that caveolin-1 can promote the proliferation of neural stem cells and inhibit their differentiation in vitro.

Objective To compare the effecacy and safety of lower dose peginterferon alfa-2b plus ribavirin versus standard interferon alfa-2b plus ribavirin for treatment of chronic hepatitis C in China.Methods 192 patients with chronic hepatitis C were assigned peginterferon alfa-2b 0.5?g/kg each week plus ribavirin 750～1050 mg/d or standard interferon alfa-2b 3 MIU TIW plus ribavirin 750～1050 mg/d for 48-week treatment and 24-week fellow-up.Results The sustained virological response (SVR)rate in lowe-dose peginterferon alfa-2b plus ribavirin group was 53.8%,and the SVR rate in standard interferon alfa-2b plus ribavirin was 58.1%.The SVR was similar between the two treat- ment group(P=0.966 for both comparisons).The adverse event rate was higher in peginterferon al- fa-2b plus ribavirin group than in standard interferon alfa-2b plus ribavirin group(P=0.033 for both comparisons),but there was no new or unique adverse event in related to pegylation of interferon alfa-2b. Conclusion The effecacy and safety was similar between lower-dose peginterferon alfa-2b plus ribavirin and standard interferon alfa-2b plus ribavirin for treatment of chronic hepatitis C.

Objective To investigate the characteristics of the dynamic contractions on the surface electromyography (sEMG) single of stroke patients induced from the low limb muscle when exercising passively, exercising initiatively with assistant and against resistance.Methods 24 stroke patients with hemiplegia and 17 normal subjects were tested with sEMG under a dynamic contractions in coxa and knee flexion and extension passively, initiatively with assistant and against resistance. The myoelectric signals were collected and processed by linear time and frequency domain method.Results The values of median frequency (MF) and mean power frequency (MPF) of stroke group were significantly lower, but the value of average EMG (AEMG) was higher ( P<0.001). The values of MF and MPF in activity side were lower than that in non-activity side ( P<0.001). The values of MF and MPF when exercising passively were higher than that when exercising with resistance ( P<0.05). The value of AEMG when exercising with resistance was highest. The values of MF and MPF in the synergist muscle were higher. The values of AEMG in the antagonistic muscle and synergist muscle were higher than that agonist and synergist muscle ( P<0.01). The values of MF and MPF in non-paretic exercising side were higher significantly, but in paretic exercising side and non-paretic silent side were lower. The values of MF and MPF in exercising side from vastus lateralis (VL) were the highest. The values of AEMG in exercising side and non-exercising side from biceps femoris (BF) were the highest. The values of MF and MPF in low limb of stroke group reduced, that in rectus femoris (RF) from paretic side was the lowest; that in BF from non-paretic side was the lowest ( P<0.01). The value of AEMG in low limb of stroke group was high significantly, especially in BF from the low limb of the non-paretic side in stroke patients. The values of AEMG in four group muscles gradually were higher following the higher exercising load, and that in the BF was the highest, and that in vastus medialis (VM) rose significantly.Conclusion The values of MF and MPF of stroke patients with hemiplegia reduce significantly, but the value of AEMG is higher. The values of MF and MPF in exercising side are lower than that in non-exercising side and non-paretic exercising side rising significantly, but that in paretic exercising side and non-paretic silent side reduce significantly. The values of MF and MPF in assistant exercise are higher than that in passive exercise and resistance exercise, but the value of AEMG in resistance exercise is higher than that in assistant exercise and in passive exercise. The values of MF and MPF in synergist muscle rise, but the values of AEMG in antagonist and synergist muscle are higher than that agonist and synergist muscle.

Objective To explore the therapeutic effect and application value of retroperitoneal laparoscopic combined with resectoscopic radical nephroureterectomy for upper tract urothelial carcinoma Methods From Jan.2006 to Jul.2009,fifteen upper tract urothelial carcinoma patients underwent excision of bladder cuff with resectoscope at first,and then retroperitoneal laparoscopic radical nephroureterectomy.All tumors were confirmed to be localized,stage T1-T3.Clinical outcomes of the patients were retrospectively analyzed.Results Mean operative time was 150 (range:120-180) minutes and blood loss volume was 200 (range:100-400)ml.The function of intestinal canal recovered after 24-48 hours,the drainage tube could be removed after 3-4 days.Catheter was kept for 7-10 days.During the follow up for 1-40 months,all the 15 patients survived with one retroperitoneal lymphatic metastasis.There were no severe complications in perioperative and postoperative period.Conclusions Retroperitoneal laparoscopic combined with resectoscopic radical nephroureterectomy may be a practical surgical procedure for upper tract urothelial carcinoma patients with less intraoperative blood loss and early recovery.

Dust ; analysis ; Humans ; Magnoliopsida ; Pneumoconiosis ; epidemiology ; Prevalence

OBJECTIVE To explore the role of gecko crude peptides (GCPs) in the proliferation, apoptosis, migration and lymphangiogenesis of human hepatocellular carcinoma cells (HepG2) and human lymphaticendothelial cells (HLECs) in vitro. METHODS The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was used to evaluate the anti- proliferative effect of GCPs and siRNA-VEGF-C on HepG2 cells, Hoechst 33258 staining and flow cytometry were performed to analyze cycle and apoptosis. The migration and invasion ability of cells were assayed by transwell chamber experiment and wound-healing assay. The protein and mRNA expressions of vascular endo?thelial growth factor-C (VEGF-C) and CXC chemokine receptor-4 (CXCR4) were detected by q-PCR, immunofluorescence, Western blot. The protein expressions of the extracellular signal regulated kinase (ERKI/2), c-Jun N-terminal kinase (JNK), p38-mitogen activated protein kinases (p38 MAPK), serine/threonine kinase (Akt) and phosphatidylinositol- 3- kinase (PI3K) were detected by western blot. The anti-lymphangiogenesis effect of GCPs on the HLECs was analyzed using an in vitro tube-formation assay. The protein and mRNA expressions of vascular endothelial growth factor receptor-3 (VEGFR-3) and stromal cell-derived factor-1 (SDF-1) were detected by q-PCR, Western blot. RESULTS GCPs and siRNA-VEGF-C inhibited HepG2 proliferation, invasion and migration, and the most obvious inhibitory effect was both synergistic effects. Thus, GCPs suppressed HLECs proliferation, migration and tube-like structure formationin a dose- dependent manner, and had inhibitory effect of tumor- induced lymphangiogenesis in vitro. Additionally, we found that GCPs and siRNA- VEGF- C decreased the expressions of MMP-2, MMP-9, VEGF-C, CXCR4, phospho-ERK1/2, phospho-P38, phospho-JNK and PI3K in HepG2 cells. Moreover, GCPs had a dose-dependent depressive effecton the expressions of VEGFR- 3, SDF- 1 in HLECs. CONCLUSION The low expression of VEGF- C mediated by siRNA-VEGF-C and GCPs inhibit tumor proliferation, invasion and migrationby suppressing the MAPK signaling pathway through reduced levels of VEGF-C, and GCPs inhibit tumor lymphangiogenesis by suppressing the CXCR4/SDF-1 signaling pathway through suppressed VEGF-C/VEGFR-3.