Objective:To investigate the changes of T-lymphocyte subsets, T-cell immunoglobulin and mucin domain molecule-1 (TIM-1) and TIM-3 levels, and cytokines in the peripheral blood of patients with active tuberculosis.Methods:From December 2017 to December 2018, 50 tuberculosis patients and 50 cured tuberculosis patients in Zhejiang Hospital of Integrated Chinese and Western Medicine were selected as the tuberculosis group and cured tuberculosis group, respectively. Fifty healthy individuals in the same period were selected as the control group. Flow cytometry was used to detect the T-lymphocyte subsets in the peripheral blood. The mRNA levels of TIM-1, TIM-3, interferon(IFN)-γ and interleukin(IL)-4 in peripheral blood mononuclear cells (PBMC) were detected by quantitative real-time polymerase chain reacticn (PCR). T test was used for statistical analysis. Results:The ratio of CD4 + /CD8 + T lymphocytes in the tuberculosis group (1.21±0.50) decreased significantly, comparing with those in the cured tuberculosis group (1.88±0.62) and the control group (1.92±0.82). The differences were statistically significant ( t=2.148 and 2.207, respectively, both P<0.05). The mRNA levels of TIM-1, TIM-3 and IL-4 in PBMC in the tuberculosis group were 2.16±0.37, 1.59±0.36 and 1.52±0.69, respectively, which were all higher than those in the cured tuberculosis group (1.60±1.23, 1.01±0.52 and 0.91±0.36, respectively) and the healthy control group (1.40±0.27, 0.92±0.34 and 0.79±0.42, respectively). All of these differences were statistically significant ( t=14.120, 11.440, 17.130, 12.090, 12.050 and 17.030, respectively, all P<0.05). However, the IFN-γ mRNA level (0.43±0.11) was lower than that in the cured tuberculosis group (1.74±0.72) and the control group (1.82±1.17), and the differences were both statistically significant ( t=13.880 and 11.430, respectively, both P<0.05). Conclusion:The immune dysfunction in patients with active tuberculosis may be related to the low ratio of CD4 + /CD8 + T lymphocytes, the increased expressions of TIM-1 and TIM-3, and the imbalance of helper T lymphocyte (Th)1/Th2 cytokines.

Objective:To explore the predictive value of various specific sonographic features on molecular subtypes for invasive breast carcinoma(IBC).Methods:Sonographic and clinicopathological data were retrospectively reviewed for 500 IBC patients who accepted surgical therapy in Fudan University Shanghai Cancer Center from January 2014 to March 2016. All tumors were divided into 5 molecular subtypes. The relationships of sonographic variations associated with the molecular subtypes for IBC were analyzed by univariate and multivariate Logsitic regression analyses.Results:Specific sonographic features for triple-negative subtype included regular shape ( OR=2.06, P=0.018), no spiculated/angular margin ( OR=1.98, P=0.029), posterior acoustic enhancement ( OR=2.26, P=0.005), and no calcification ( OR=2.13, P=0.006). Specific sonographic feature for human epidermal growth factor receptor-2 positive (HER2) subtype was posterior acoustic enhancement ( OR=2.23, P=0.006). Specific sonographic features for Luminal A subtype included spiculated/angular margin ( OR=2.24, P=0.001), posterior acoustic shadow ( OR=1.84, P=0.026), and no calcification ( OR=1.89, P=0.016). There were no specific sonographic features for the Luminal B with HER2 negative subtype, while that for the Luminal B with HER2 positive subtype was calcification ( OR=3.61, P<0.001). However, when used these sonographic features to predict molecular subtypes of breast cancer, the sensitivity values were 8.4%-57.3%, and positive predictive values were 9.5%-53.3%. Conclusions:The variety of sonographic features is associated with molecular subtypes of IBC.However, due to the overlap of sonographic features between different subtypes, molecular subtypes of IBC cannot be predicted by sonographic features.

Objective To test the antimicrobial susceptibility of Staphylococcus aureus from children with impetigo,and to assess the differences in randomly amplified polymorphic DNA profiles between sensitive and resistant Staphylococcus aureus strains.Methods Secretion specimens were obtained from the impetiginous lesions of 178 children,and subjected to bacterial culture.The susceptibility of 162 Staphylococcus aureus isolates against 21 antibiotics was tested.Randomly amplified polymorphic DNA PCR(RAPD-PCR)was performed to characterize the genotype of Staphylococcus aureus.Results Totally,180 bacterial strains were isolated from 178 children with impetigo in Chengdu,including 162(90.00％)Staphylococcus aureus strains.Of the 162 Staphylococcus aureus strains,148 were methicillin sensitive Staphylococcus aureus(MSSA),14 methicillin resistant Staphylococcus aureus(MRSA).The most active antibiotic was minocycline,followed by teicoplanin,quinupristin,vancomycin and nitrofurantoin,while the resistance rate to penicillin was highest,followed by that to erythromycin,clindamycin,compound sulfamethoxazole and tetracycline.All the Staphylococcus aureus isolates were sensitive to fusidic acid,nitrofurantoin,vancomycin,minocycline and teicoplanin.According to RAPD-PCR,the 162 Staphylococcus aureus strains were divided into 8 genotypes,with the three most prevalent genotypes being Ⅲ(31.48％),Ⅱ(26.54％)and Ⅵ(25.93％),which accounted for 65.43％(106/162)in all the strains.The 148 MSSA strains fell into 8 genotypes,with genotype Ⅲ(50 strains,33.78％),Ⅵ(39 strains,26.35％)and Ⅱ(33 strains,22.30％)being the most prevalent genotypes;the 14 MRSA strains fell into 3 genotypes,i.e.,genotype Ⅱ(10 strains,71.43％),Ⅵ(3 strains,21.43％),and Ⅲ(1 strain,7.14％).Conclusions Staphylococcus aureus is the most prevalent pathogenic bacteria in children with impetigo in Chengdu area,which is highly sensitive to minocycline,teicoplanin and quinupristin,and falls into 8 genotypes according to RAPD-PCR with genotype Ⅲ being the most common genotype.

Objective:To explore the application of photoplethysmography (iPPG) for contactless vital signs monitoring in the intensive care unit (ICU).Methods:Ten tracheostomy patients in intensive care had their heart rate, oxygen saturation, and diastolic and systolic pressures monitored using iPPG technology and a 24-hour bedside monitor. The readings included periods at rest, during turning, during suctioning, and when undergoing vigorous physical therapy and occupational therapy. The monitoring lasted 3 consecutive days. The data collected by the two methods were compared to analyze the accuracy of the contactless vital signs monitoring system.Results:The oxygen saturation readings of the two systems showed no significant differences. The heart rates, diastolic pressures, and systolic pressures did, however, differ significantly.Conclusions:In the situations tested, contactless monitoring of oxygen saturation is effective, but there is still significant room for improvement in the three indicators of heart rate, systolic pressure, and diastolic pressure.