Microbubble contrast agents for ultrasound (US) have been developed and clinically applied in recent years. Contrast-enhanced ultrasound (CEUS) has been widely used in the imaging of liver and other organs such as kidney, pancreases, spleen, prostate, ovarian, uterus as well as abdominal trauma, showing promising values in the diagnosis and differential diagnosis of various diseases. This article reviews the recent development and future protential clinical applications of CEUS.
Contrast Media ; administration & dosage ; Diagnosis, Differential ; Drug Delivery Systems ; Humans ; Microbubbles ; Ultrasonography ; methods

Abdominal Pain ; etiology ; Child ; Female ; Humans ; Ovarian Cysts ; complications ; Torsion Abnormality

ObjectiveTo study the effect of the cognition training on aphasia after stroke. Methods60 patients with aphasia and cognition functional impairment after stroke were divided into 2 groups. The control group received comprehensive treatment, including speech therapy, while the treatment group accepted cognitive functional training in addition. They were assessed with the Loewenstein Occupational Therapy Cognitive Assessment Battery (LOTCA) and China Rehabilitation Research Center Aphasia Examination (CRRCAE) before and after training. ResultsThe scores of LOTCA (P<0.05) and the CRRCAE (P<0.0001) improved in treatment group compared with the control group after training. ConclusionThe cognition functional training above the aphasia functional training facilitates the recovery of aphasia in patients with aphasia and cognition disorder after stroke.

BACKGROUND:The resin infiltration technique for masking white spot lesions has obtained a result superior to the conventional remineralization. Up to now, few studies have evaluated the color of carious incipient lesions treated with the resin infiltration.
OBJECTIVE:To assess the color change of caries incipient lesions in the enamel treated with resin infiltration.
METHODS: Forty-eight extracted teeth were exposed to demineralizing solution for 4 weeks to establish artificial caries models. Then artificial caries models were treated with resin infiltration and randomized into four groups: these specimens were immersed in red wine, coffee, tea and artificial saliva for 2 and 4 weeks, respectively. The base line color was evaluated by spectrophotometer. The variation in color (ΔE) was analyzed by one-way analysis of variance and Tukey’s tests.
RESULTS AND CONCLUSION:Al specimens underwent color and lightness changes, irrespective of immersion media. After 2 weeks of immersion, ΔE values were ranked as folows: red wine > coffee > tea > artificial saliva, and there were significant differences between four groups (P < 0.05). After 4 weeks of immersion,ΔE values were ranked as folows: red wine≈ coffee > tea > artificial saliva, and there were significant differences between four groups (P < 0.05) but not between the red wine and coffee groups (P > 0.05). Significant changes in the color were found in the red wine and coffee groups at different time after immersion (P < 0.05). Immersed in red wine, coffee and tea, the?E value was > 3.7, which is not acceptable in clinic. These findings indicate that the color stability of carious incipient lesions located in the enamel treated with resin infiltration is associated with the soak solution and soak time. In addition, immersion in red wine and coffee results in significantly increased color alteration (ΔE) compared with the artificial saliva.

Bronchial asthma is the chronic airway inflammatory disease that characterized by reversible airflow limitation .The presence of airway inflammation could lead to airway remodeling .In recent years , many studies have found that arginase plays an im-portant role in the airway inflammation and airway remodeling of asthma .It not only reduces airway release nitric oxide and increases airway hyperresponsiveness , but also its metabolites such as putrescine , proline, etc can induce cell proliferation and collagen synthe-sis, leading to airway remodeling .In this paper , the arginase and its role in the pathogenesis of asthma are discussed .

Carcinoma, Hepatocellular ; genetics ; therapy ; Gene Expression Regulation ; Humans ; Liver Neoplasms ; genetics ; therapy ; RNA, Long Noncoding

Objective: To test the mechanical properties o f N48 NdFeB magnet.Methods:Samples of N48 NdFeB magnet in the size of 2 mm?3 mm?4 mm were prepared, the residual flux density,coercive force and maximum energy product of the samples were measured, the magnetic density aroun d the magnets,the attractive and repulsive force between two magnets in 0~10 mm air gap were investegated.Results:The residual flux density of t he N48 NdFeB magnet was 1.373 T, coercive force 1 037 A/m and maximum energ y product 368 kJ/m 3.The magnetic density at magnet surface was 0.338 T,it decr eased to 0 at the point that leave magnet surface 20 mm away. The highest attrac tive force was 4.47 N between two magnets, the attractive force was 4.47~0.39 N in 0~5 mm air gap.The highest repulsive force was 2.82 N and the repulsive force was 2.82~0.39 N in 0~5 mm air gap.Conclusion:The magnetic and m echanical properties of the N48 NdFeB magnet can meet the standard of the orthod ontic force.

To explore the influence of angiotensinⅡ(AngⅡ) and aldosterone (Ald) on synthesis of collagen and activity of precollagenase secreted by cardiac fibroblasts.Sirus Red method was employed to evaluate collagen synthesis of cultured cardiac fibroblasts; typeⅠ collagen was measured by competitive ELISA; collagenase activity was tested by fluorescence spectrophotometry.At the doses of 10-9～10-7mol/L, AngⅡ could enhance gross and typeⅠ collagen production in a dose-dependent manner. Collagenase activity decreased with increasing concentration of AngⅡ. These effects of AngⅡcould be completely abolished by its receptor antagonist, saralasin. Ald might enhance gross and typeⅠ collagen production only at a higher concentration (10-7～10-8mol/L), whereas lower concentration (10-9mol/L) had no effect on it. These effects of Ald could be abolished by spironolactone,a specific Ald receptor antagonist. In addition, Ald could significantly decrease the activity of collagenase secreted from cultured cardiac fiboblasts at concentrations of 10-9～10-7mol/L within 24h，which could not be antagonized by 10-6mol/L spironolactone. The results suggested that AngⅡand Ald enhance cardiac fibroblasts collagen synthesis and inhibit collagenase activity ,resulting in net collagen accumulation resulted and acceleration of cardiac fibrosis.

Objective: To detect the expressions of proto-oncogene protein FOSB and cyclin protein P16 in the different molecular subtypes of breast invasive ductal cancer and their correlation. Methods: The tumor tissues of 138 patients diagnosed with breast invasive ductal cancer by postoperative pathological examinations in Zhongshan Bo'ai Hospital from August 2013 to March 2019 were collected with normal breast tissues as control. Immunohistochemical staining was performed for the expressions of FOSB and P16 to investigate their correlation in the breast cancer. Besides, their expressions and their correlations in the different molecular subtypes of breast cancers, i.e. Luminal A, Luminal B [According to the expression of human epidermal growth factor 2 (HER2), it can be divided into HER2- and HER2+.], HER2 positive subtype, and triple-negative breast cancer (TNBC), were also detected. Results: ① The expression level of FOSB in 138 cases of breast invasive ductal cancer tissues was negatively correlated with P16 (r= -0.181, P=0.033). ② The expression of FOSB was significantly higher in Luminal A than those in other subtypes (P=0.028, P=0.033, P=0.001, P=0.010), while the expression of P16 was significantly higher in TBNC than those in other subtypes (P=0.025, P=0.005, P=0.008, P=0.011). ③ The expression level of FOSB in TBNC was negatively correlated with the expression of P16 (r=-0.566, P=0.018). Conclusion: The expressions of FOSB and P16 in the different molecular subtypes of breast invasive ductal cancer are different. The expression level of FOSB significantly increases in Luminal A, and that of P16 significantly increases in TBNC. There is a negative correlation between the expression levels of FOSB and P16 in TBNC.