Objective To compare the respective diagnostic efficiency for breast cancer with ultrasound diffusion optical imaging (DOI),ultrasonic elastography (UE),contrast-enhanced ultrasound (CEUS),X-ray mammography(XRM),magnetic resonance imaging (MRI),and combinations of these imaging modalities.Methods Seventy-five breast lesions were collected.These lesions were confirmed by surgery and histopathology.All of breast lesions were examined ultrasound,mammography and enhancedMRI examinations before surgical excision.The specificity,sensitivity,positive predictive value and negative predictive value of each modality were compared.Results The sensitivities and the diagnostic negative predictive values for MRI + US + XRM (97.44％,96.15％),CEUS (92.31％,90.63％) and MRI (94.87 ％,92.86％) were significantly higher than those for XRM (74.36 ％,71.43 ％),respectively.The sensitivity for DOI + CEUS + UE was the same as one for CEUS,they were not significantly higher than those for UE and DOI (P ＞0.05),while they were significantly higher than that for XRM (P ＜0.05).The kappa values for DOI,UE,CEUS,USG(UE + DOI + CEUS),XRM,MRI and MRI + US + XRM were 0.678,0.624,0.732,0.705,0.439,0.677 and 0.676,respectively.Conclusions Different imaging modalities have themselves advantages to diagnose malignant or benign lesions.CEUS,MRI and combinations of these imaging modalities have highly important clinical values in breast disease diagnosis.

Objective:To evaluate the early diagnostic value of tissue inhibitor of matrix metalloproteinase-2 (TIMP-2) and insulin-like growth factor binding protein-7 (IGFBP-7) in acute kidney injury induced by sepsis.Methods:A total of 85 sepsis patients admitted to the EICU and GICU in Shanghai East Hospital from September 2017 to June 2019 were divided into theAKI group ( n=37) and the non-AKI group ( n=48) according to KIDGO diagnostic criteria, and 20 healthy volunteers were served as the control group. The clinical data were recorded and samples of urine were collected at 0 h, 6 h, 12 h, 1 d, 3 d and 7 d post sepsis. The levels of TIMP-2 and IGFBP-7 in the urine were analyzed with ELISA at different time points. Based on the receiver operating characteristic curve (ROC) and the area under the curve (AUC), the early diagnostic value of urinary TIMP-2 and IGFBP-7 in sepsis-induced AKI patients was determined. Results:Compared with the control group, the levels of TIMP-2 and IGFBP-7 of the AKI group were significantly higher at the above time points ( P<0.05), while those of the non-AKI group showed no significant differences. The levels of TIMP-2 and IGFBP-7 of the AKI group were significantly higher than the those of the non-AKI group ( P<0.05). ROC analysis showed that when the AUC of urine TIMP-2 peaked at 1 d, the sensitivity and specificity reached 97.5% and 81.2%, separately with the cutoff value of 151.23 ng/mL. Furthermore, when the AUC of urine IGFBP-7 peaked at 12 h, the sensitivity and specificity reached 100% and 72.8%, separately with the cutoff value of 14.91 ng/mL. Interestingly, when the AUC of combined TIMP-2×IGFBP-7 peaked at 12 h, the sensitivity reached 98.0% and specificity reached 91.5% with the cutoff value of 2.09 [(ng/mL) 2/1 000]. There was no significant correlation between the levels of TIMP-2 and IGFBP-7 with SOFA and APACHEⅡ score at 1 d, 3 d and 7 d post sepsis in the AKI group ( P>0.05). Conclusions:Urine TIMP-2 and IGFBP-7 have early diagnostic value in sepsis-induced AKI. Besides, the combination of the two biomarkers have superior predictive value than each single of them.

Objective:To study the protective effects and mechanism of Melastoma sanguineum Sims fruit extract (MSE) on chronic chemical liver injury induced by ethanol, acetaminophen and carbon tetrachloride in mice; To discuss it mechanism.Methods:Totally 96 mice were divided into normal control group, ethanol model group, ethanol+bifendate control group and ethanol+MSE high-, medium- and low-dosage groups, APAP model group, APAP+bifendate control group and APAP+MSE high-, medium- and low-dosage groups, CCl 4 model group, CCl 4+bifendate control group and CCl 4+MSE high-, medium- and low-dosage groups, with 6 mice in each group. Except for the normal control group, the other groups were respectively prepared for the ethanol model, the APAP model and the CCl 4 model. The mice in the MSE high-, medium- and low-dosage groups were intragastrically administrated with 10, 5 and 2.5 g/kg of MSE, respectively; the bifendate control group was intraperitoneally injected with 15 mg/ml bifendate solution at 75 mg/kg; the normal control group was intraperitoneally injected with equal volume of normal saline/peanut oil solution once a day for 25 consecutive days. The levels of GPT, GOT and total bilirubin (TBIL) in serum were detected; the activities of SOD and GSH-Px and the content of MDA in liver tissue were detected; the mRNA expressions of TNF-α, IL-6, alcohol dehydrogenase (ADH) and acetaldehyde dehydrogenase (ALDH) were detected by qRT-PCR; the protein expressions of cytochrome P450 CYP1A1, CYP1A2, and CYP3A in liver tissue were detected by Western blot; the pathological changes of the liver tissue were observed by HE staining. Results:Compared with the corresponding ethanol, APAP and CCl 4 model groups, the serum GPT, GOT and TBIL levels of mice in the ethanol+bifendate control group and ethanol+MSE high- and medium-dosage groups, the APAP+bifendate control group and APAP+MSE high- and medium-dosage groups, and the CCl 4+bifendate control group and CCl 4+MSE high- and medium-dosage groups decreased ( P<0.01 or P<0.05), the activities of SOD and GSH-Px in the liver tissue increased ( P<0.01 or P<0.05), and the MDA level decreased ( P<0.01 or P<0.05), and the mRNA levels of IL-6 and TNF-α decreased ( P<0.01); the mRNA levels of ADH and ALDH in the ethanol+MSE high-, medium-, and low-dosage groups decreased ( P<0.01). Compared with the APAP model group, the expressions of CYP1A1 and CYP1A2 in the APAP+MSE groups increased ( P<0.01), and the expression of CYP3A protein decreased ( P<0.05); compared with the CCl 4 model group, the expressions of CYP1A1, CYP1A2 and CYP3A proteins in the CCl 4+MSE groups decreased ( P<0.05). Conclusion:MSE has a protective effect on chronic chemically-induced liver injury induced by ethanol, APAP, and CCl 4 in mice, and its mechanism may be related to antioxidant stress, inhibition of inflammatory response, and regulation of the expression of cytochrome P450-related enzymes.

Objective:To explore the influence of temperament between parenting style and externalizing problem behaviors in school-age children.Methods:In October 2017, a stratified cluster sampling method was used to conduct a questionnaire survey among 380 school-age children in Aruhorqin Banner, Chifeng City, Inner Mongolia Autonomous Region. All the school-age children were assessed by the Achenbach child behavior checklist, parenting style scale, and middle childhood temperament questionnaire.Mediation models were established by the PROCESS macro program of SPSS, and the mediating effect was tested by the Bootstrap method.Results:The scores of various scales for school-age children were as follows: father's authoritative parenting style(3.77±1.11), father's authoritarian parenting style(1.55±0.68), father's indulgent parenting style(1.25±0.57), mother's authoritative parenting style(3.86±1.16), mother's authoritarian parenting style(1.64±0.73), mother's indulgent parenting style(1.25±0.61), activity level(2.42±0.71), attention dispersion(3.78±0.81), externalization problem behaviors 3.0(4.0).For school-age children, the scores of externalization problem behaviors were negatively correlated with the scores of authoritative parenting style( r=-0.15, -0.11, both P<0.05), and positively correlated with authoritarian and indulgent parenting style ( r=0.17-0.33, all P<0.05). The scores of externalization problem behaviors were positively correlated with eight temperament dimensions, such as adaptability, emotional essence, reaction threshold, attention dispersion, persistence, rhythmicity, activity level and reaction intensity( r=0.17-0.42, all P<0.05). After controlling for age and gender, attention dispersion played a masking effect on the influence of authoritative parenting style on children's externalizing problem behaviors, with the indirect effect accounting for 21.05%(|0.04/-0.19|) and 26.67%(|0.04/-0.15|) of the direct effect respectively. Attention dispersion partially mediated the impact of father's authoritarian parenting style on children's externalization problem behaviors, with the mediating effect accounting for 10.71%(0.03/0.28) of the total effect. Response intensity partially mediated the impact of authoritarian parenting style on children's externalizing problem behaviors, with the mediating effect accounting for 25.00%(0.07/0.28) and 27.58%(0.08/0.29) of the total effect respectively. Conclusion:Temperament plays a mediating role between parenting styles and externalizing problem behaviors among school-age children. A nurturing environment suitable for children's temperament should be created to prevent the occurrence of externalizing problem behaviors among school-age children.

Objective:To investigate the differences of white matter diffusion properties between vulnerable and resistant individuals to continuous attention after sleep deprivation.Methods:According to the psychomotor vigilance test performance before and after sleep deprivation, the participants were divided into the vulnerable group( n=24) and resistant group( n=25). All participants underwent diffusion tensor imaging (DTI) scans.Tract based spatial statistics(TBSS) was used to compare fractional anisotropy(FA), mean diffusivity(MD), axial diffusivity(AD), radial diffusivity(RD) maps between the two groups.Spearman correlation analysis was conducted by SPSS 24.0 to investigate the relationships between the altered DTI metrics and PVT task performance. Results:(1) Compared with resistant group, FA value of vulnerable group decreased in the body of corpus callosum(x, y, z=-8, 9, 25, t=-7.855), right superior longitudinal fasciculus(x, y, z=-39, -7, 26, t=-6.252), bilateral anterior limb of internal capsule(x, y, z=-13, 8, 13, t=-5.235; x, y, z=12, 8, 3, t=-5.024) and right posterior thalamic radiation(x, y, z=-26, -56, 17, t=-5.469)(TFCE corrected, P<0.05, cluster size≥50 voxel). (2) Compared with resistant group, MD value of vulnerable group increased in the body of corpus callosum(x, y, z=-3, -6, 26, t=7.613), right superior longitudinal fasciculus(x, y, z=-31, -19, 38, t=5.314), bilateral anterior limb of internal capsule(x, y, z=-16, 7, 8, t=6.898; x, y, z=15, 5, 7, t=6.652), splenium of corpus callosum(x, y, z=27, -53, 17, t=6.541), and AD value increased in the right superior longitudinal fasciculus(x, y, z=-33, -19, 39, t=4.892), splenium of corpus callosum(x, y, z=-22, -49, 21, t=5.450), genu of corpus callosum(x, y, z=4, 26, 0, t=4.332), as well as RD value increased in the right superior corona radiata(x, y, z=-17, 1, 33, t=7.558), body of corpus callosum(x, y, z=4, -8, 26, t=6.699), right anterior limb of internal capsule(x, y, z=-12, 7, 3, t=5.212) (TFCE corrected, P<0.05, cluster size≥50 voxel). (3) Correlational analysis revealed that the negative correlations were found between PVT task performance and the FA value in the right superior longitudinal fasciculus( r=-0.492, P<0.001), right anterior limb of internal capsule( r=-0.510, P<0.001), right posterior thalamic radiation( r=-0.502, P<0.001) and body of corpus callosum( r=-0.464, P<0.001). The positive correlations were found between PVT task performance and the MD value in the body of corpus callosum( r=0.500, P<0.001), right superior longitudinal fasciculus( r=0.499, P<0.001), splenium of corpus callosum( r=0.462, P<0.001), right anterior limb of internal capsule( r=0.471, P<0.001), and AD value in right superior longitudinal fasciculus( r=0.643, P<0.001), as well as RD value in right superior corona radiate( r=0.498, P<0.001) (Bonferroni corrected, P<0.003). Conclusion:Differences in the microstructural characteristics of white matter fiber tracts in specific brain regions may constitute the potential neuropathological basis for the phenotypes of vulnerable and resistant individuals to continuous attention after sleep deprivation.