Objective To investigate clinical and MRI features of the reversible posterior encephalopathy syndrome (RPES).Methods Clinical and MRI materials of 4 RPES cases confirmed by integrated clinical diagnosis were retrospectively analyzed.Results All the cases presented with a rise of blood pressure.The neural symptom include severe headache (2 cases),dysphoria (3 cases),blur of vision (2 cases),impairment of impermanent memory (1 case),seizure (2 cases).In MRI,the lesions mainly systematically located in posterior parietal lobe and occipital lobe in all cases,or randomly located in frontal lobe (2 cases).Lesions demonstrated high signal on T_2 weighed and water-suppressed sequences in MRI.The lesions dominantly located in cortex in 2 cases,in both cortex and subcortieal white matter in 1 case and in subcortical white matter in 1 case.Four cases resolved their lesions when re-examined. Conclusions RPES represents such characteristic MRI findings as symmetrical distribution of reversible lesions in posterior brain with involvement of cortex or subcortieal white matter.When combined with hypertension and neural symptoms caused by involvement of posterior brain structure,it is helpful for early differential diagnosis of this syndrome.

BACKGROUND:Compared with the normal intervertebral disk, the density of nerve fibers and number of nerve endings and neuropeptides appear to be more in the degenerated intervertebral disk. However, this phenomenon does not occur in the normal y aged disk.
OBJECTIVE:To evaluate the axonal growth and induction of a painful neuropeptide and substance P using rat dorsal root ganglion neurons and degenerated human disc cells in vitro.
METHODS:The human intervertebral discs were harvested from patients with discogenic low back pain and normal people. And extracelluar matrix extracted from human degenerative intervertebral discs was cultured with rat dorsal root ganglion neurons. The promotion of axonal growth and induction of substance P of dorsal root ganglion neurons in extracted medium were evaluated through morphology observation and enzyme-linked immunosorbent assay, respectively.
RESULTS AND CONCLUSION:Compared with the normal group, the content of nerve growth factor in the degenerative group was significantly higher and the average length of neuritis was significantly longer in the experimental group (P<0.05). After intervention with anti-nerve growth factorβ, the average length of neuritis became remarkably shorter. The percentage of substance P-immunoreactive cells was significantly higher in the degenerative group compared with the normal group (P<0.001). Nerve growth factors that highly express in the extracellular matrix from the degenerative intervertebral dick can promote neurite outgrowth of dorsal root ganglion neurons and induce release of neuropeptides related to pain transmission.

Intestinal schistosomiasis is a kind of intravascular parasitic diseases, and chronic inflammation of colon is one of the basic pathological changes of the sickness.However, the mechanism of caveolin-1 and tight junction proteins in the pathogenesis of intestinal schistosomiasis is still unclear.Aims: To study the expressions and significances of caveolin-1 and tight junction protein occludin, claudin-1 in schistosomiasis colitis in mice.Methods: Forty BALB/c male mice were randomly divided into control group and infection group.Schistosomiasis colitis model was established by placing 40 Schistosoma Japonicum cercarie on the abdomen.Mice were sacrificed after 8 weeks.HE staining was performed.The permeability of intestinal vascular endothelium was detected by Evans blue method.The leukocyte counts in peritoneal lavage fluid were measured.qPCR was used to determine the mRNA expressions of caveolin-1, occludin, claudin-1 and eNOS in colon tissue.Western blotting and immunohistochemistry were used to detect the protein expressions of caveolin-1 and occludin.Results: Large number of egg granuloma was observed in colon submucosa and accompanied by extensive inflammatory cells infiltration in infection group.Compared with control group, content of Evans blue and leukocyte counts in peritoneal lavage fluid were significantly increased (P<0.05);mRNA expressions of caveolin-1, occludin, claudin-1 were significantly decreased (P<0.01);protein expressions and positivity rates of caveolin-1 and occludin were significantly decreased in infection group (P<0.05).Conclusions: Down-regulation of expressions of caveolin-1, occludin and claudin-1 can induce leukocyte accumulation via increasing the permeability of intestinal vascular endothelial cells, thereby involving in the development of schistosomiasis colitis.

Atrioventricular Block ; chemically induced ; Child ; Humans ; Male ; Mercury Poisoning ; complications

Child ; Child, Preschool ; Contrast Media ; adverse effects ; Coronary Angiography ; Female ; Humans ; Infant ; Iohexol ; adverse effects ; Kidney ; drug effects ; physiology ; Male ; beta 2-Microglobulin ; urine

Purpose To explore ultrasonic characteristics of complex fibroadenoma (CF) of breast and its differential diagnosis from invasive ductal carcinoma (IDC).Materials and Methods Sixty-one patients with CF and 81 patients with IDC from January 2010 to February 2016 in the Affiliated Union Hospital of Fujian Medical University were enrolled,and the CF and IDC were confirmed by pathology after operation.The preoperative sonographic findings of CF and IDC were retrospectively analyzed and compared.Results Fifty-nine cases with CF were detected by ultrasonography in 61 cases.Ultrasonic findings of 59 cases of CF showed as follows:79.7％ (47/59) of the CF cases with an aspect ratio ＜0.7;79.7％ (47/59) with blood flow signal of 0 to 1 level;72.9％ (43/59) with liquid dark area,including 67.8％ (40/59) with round or oval cystic fluid area showing local sievelike or diffused distribution;72.9％ (43/59) with irregular shape;61.0％ (36/59) with obscure boundary;61.0％ (36/59) with the largest diameter of tumor ＜2 cm;59.3％ (35/59) with calcifications,including 33.9％ (20/59) with coarse calcification,25.4％ (15/59) with microcalcification and 85.7％ (30/35) with distribution of calcified lesions along the linear high echo zone;54.2％ (32/59) with echo heterogenicity showing linear high echo and high echo in the middle and low echo.There were significant differences in the detection rates of internal regular fluid area,internal linear high echo or high echo area,and alcification distribution along the linear high echo between CF and IDC lesions (all P＜0.01).Compared with IDC,there were higher rates in CF for detecting lesions of largest diameter of tumor ＜2 cm,more regular shape,more clear border,poorer blood flow signal (P＜0.05),but there were lower rates in CF for detecting axillary lymph node enlargement,lesions with edge or spiculation and hyperechoic halo (P＜0.01).Conclusion Color Doppler ultrasonography is of great value in the diagnosis of CF and its differential diagnosis from IDC.

Objective To observe the influence of sodium citrate concentrations in TISAB on detection of water fluoride,and to explore the feasibility of 0.10 mol/L sodium citrate buffer system in detection of water fluoride.Methods Under pH 5.0 to 5.5,a series of fluoride standards of 0.2,0.5,1.0,2.0 and 5.0 mg/L were measured when sodium citrate concentration was 0.01,0.10,and 1.00 mol/L in the TISAB system.The results of water fluoride measurement were compared,recovery calculated and regression equation of the standard curve was set up.The feasibility of 0.10 mol/L sodium citrate in the TISAB system to detect water fluoride was tested,including interference test,accuracy,confidence limits,as well as precision test.Water fluoride was determined by fluoride ion selective electrode according to the Standard Test Methods for Drinking Water (GB/T 5750.5-2006).Results When the sodium citrate concentrations in the TISAB system were 0.01,0.10 and 1.00 mol/L,and the concentrations of fluoride in the sample were 0.2,0.5,1.0,2.0 and 5.0 mg/L,recoveries of water fluoride were 96.0％,103.0％,179.5％; 80.6％,97.8％,132.2％; 73.3％,97.0％,103.0％; 70.0％,100.0％,87.5％; and 66.4％,102.0％,65.4％.The equation of linear regression was y =lg-1(226.4-E/47.4),y =lg-1(226.4-E/53.4) and y =lg-1(208.1-E/36.9) ; the correlation coefficient(r) were 0.9993,0.9999 and 0.9993.The minimum detectable concentration and limit of quantitation was 0.023 and 0.072 mg/L when sodium citrate was 0.10 mol/L in the TISAB system.Aluminum(Al3+,100 μg),ferrum(Fe3+,800 μg),calcium(Ca2+,1200 μg),Al3+(50 μg) + Fe3+ (800 μg),Al3+(50 μg) + Ca2+(1200 μg) can be masked when sodium citrate was 0.10 mol/L in the TISAB system.The total average recoveries confidence limit R/d was 0.99.The total standard deviation of standard solution,water sample and spiked water sample was less than 5％ of their respective mean concentration.Conclusions High concentration of sodium citrate buffer system has a significant influence on the detection sensitivity and limit of quantification of fluoride ion in water.The capacity of anti-interference of 0.10 mol/L sodium citrate in the TISAB is strong.The confidence limits of precision and accuracy meet the requirements for fluoride determination in a variety of source water and drinking water.

Knowledge Discovery in Databases is gaining attention and raising new hopes for traditional Chinese medicine (TCM) researchers. It is a useful tool in understanding and deciphering TCM theories. Aiming for a better understanding of Chinese herbal property theory (CHPT), this paper performed an improved association rule learning to analyze semistructured text in the book entitled Shennong's Classic of Materia Medica. The text was firstly annotated and transformed to well-structured multidimensional data. Subsequently, an Apriori algorithm was employed for producing association rules after the sensitivity analysis of parameters. From the confirmed 120 resulting rules that described the intrinsic relationships between herbal property (qi, flavor and their combinations) and herbal efficacy, two novel fundamental principles underlying CHPT were acquired and further elucidated: (1) the many-to-one mapping of herbal efficacy to herbal property; (2) the nonrandom overlap between the related efficacy of qi and flavor. This work provided an innovative knowledge about CHPT, which would be helpful for its modern research.

ObjectiveTo assess the clinical value of ultrasound-guided percutaneous ethanol injection (PEI) in the treatment of hepatocellular carcinoma (HCC) combined with portal vein tumor thrombosis (PVTT).MethodsNinety HCC patients with different type PVTT underwent ultrasound-guided PEI once or twice a week.The follow-up lasted 12 to 60 months,and the 1-,2-,3-,4- and 5-year survival rates were calculated.ResultsThe median survival time of HCC combined with PVTT patients treated with PEI was 12 months,and the 1-,2-,3-,4- and 5-year survival rates was 52.22％,23.33％,15.56％,12.22％ and 10.00％,respectively.The survival rate correlated significantly to the type of PVTT.The lower the type of PVTT was,the longer the patients lived.ConclusionUltrasound-guided PEI is a safe and effective method for the treatment of HCC combined with PVTT,and can prolong the survival time of HCC patients with low type PVTT.