Photoacoustic imaging (PAI) is an emerging new biomedical imaging technique integrated with the high spatial resolution of ultrasonic imaging and high contrast of optical imaging for real-time molecular imaging.PAI is well-suited for in vivo cellular/molecular signatures imaging in cancer diagnosis, therapy management and treatment response, with a promising potential in clinical and translational medicine.This review summarizes the current state of PAI application research on cancer theranostics, and gives insights on future translational medicine research.

Objective To evaluate the diagnostic value of two tuberculosis-specific IFN-γ release assays in latent tuberculosis infection among HIV-infected individuals. Methods The levels of tuberculosis antigen-specific IFN-γin 102 HIV patients from AIDS Outpatient Clinic of Shenzhen Third People's Hospital were detected by in-house tuberculosis-specific IFN-γ ELISpot assay and commercial T-SPOT TB kit, and tuberculin skin test (TST) were done at the same time. There were 66 males and 36 females,and the average age was 35. Results Seventeen HIV infected patients were positive in both IFN-γ ELISpot and T-SPOT TB methods, the sensitivity, specificity positive predictive value(PPV), negative predictive value(NPV) and compliance rates of ELISpot were 94. 4% ,94. 0% ,77. 3% ,98. 8% and 94. 1% ,respectively. Three patients were positive in both IFN-γELISpot and T-SPOT TB methods, the sensitivity, specificity, PPV, NPV and compliance rates of TST were 16. 7%, 98. 8%, 75.0%, 84. 7% and 84. 3%, respectively. The average number of spots using three kinds of antigen ESAT-6, Pool A,Pool B obtained were 26. 89 ±5. 77,18. 96 ±4. 75 and 14. 51 ± 3.77, respectively. Only ESAT-6 and Pool B have a statistically significant difference (H=7.557,P = 0.022 9), no significant difference was shown between other groups. There was no significant difference between the positive rate and the CD4+ T cellls number(x2 =0. 860 8 ,P =0. 650 2) ,as the same as the T-SPOT TB (x2 = 1. 396 4, P = 0. 497 5 ). Conclusions The performance of this in-house tuberculosis-specific IFN-γ ELISPot assay was comparable to T-SPOT assay in diagnosis of latent tuberculosis infection, and the sensitivity and specificity of both these two assays were all much higher than TST. They canbe recommended in diagnosing latent tuberculosis infection in HIV infected patients.

Objective To discuss the relationship between various T lymphocyte subsets apoptosis and disease progression in chronic antiretroviral-naive HIV/AIDS patients. Methods Thirty-six chronic antiretrovi-ral-naive HIV-infected individuals as well as 16 healthy HIV-negative controls were performed in this study. Ac-cording to the CD4~+ T cell counts, all the patients were divided three groups: < 200/μl, 200-350/μl and > 350/μl. After the peripheral blood mononuclear cells(PBMC) were isolated, T lymphocyte subpopulations were determined by the expression of CD45RO and CD27, and the apoptosis of different T cell subsets were measured by Annexin V staining, then analyzed by flow cytometry. To investigate whether the apoptosis of T cells varied with the culture time in vitro, 4 healthy controls and 4 patients were chosen as subjects, and the lev-els of cell apoptosis were analyzed at the culture time points of 0, 3, 6, 12, 24 h. Results (1)The percenta-ges of the AnnexinV expression on CD4~+ and CD8~+ T cells and all the subsets in HIV/AIDS patients were sig-nificantly higher than that in the healthy controls (P<0.05), but there were no significant differences among the three HIV-infected patient groups(P>0.05). (2) No significant correlations were observed between the levels of apoptosis of all the T cells and subsets and total CD4~+ T cell counts(P>0.05) ,nor with the HIV viral load (P>0.05). (3)As the culture time prolonged in vitro, the levels of apoptosis and necrosis of CD4~6 T cells in HIV/AIDS patients were significantly higher than those in the healthy conlrols, and the CD4~+ T cells were more susceptible to apoptosis and necrosis compared with CD8~+ T cells. Conclusion The levels of T cell apoptosis in HIV/AIDS patients was significantly higher than those in the healthy controls, at the same time, CD4~+ T cells were more susceptible to apoptosis and necrosis compared with CD8~+ T cells, but no correlation was found between the T cell apoptsis and disease progression.

ObjectiveTo evaluate the IL-17 expression in HIV/tuberculosis-coinfected patients and its role in the pathogenesis of this coinfection.MethodsFifty-four HIV infected patients were divided into three groups:simple HIV infected group,HIV with latent tuberculosis infection (HIV+ LTBI) group and HIV coinfected with active tuberculosis (HIV+ ATB) group.The whole blood intracellular cytokine staining was performed and samples were then detected by BD FACSCanto.The expressions of CD4+ IL-17+ T cells and CD4+ IFNγ+ T cells were analyzed using FACSDiva software.Comparison between groups was done by independent sample t test.ResultsThe CD4+ T cell count and viral load among these three groups were comparable.There were no significant difference of the expression of CD4+ IL-17+ T cells between simple HIV infected group and HIV+ LTBI group (1.40 ± 1.01) ％ vs (1.29±0.86) ％,(t=0.336,P＞0.05),but both of these two groups were much higher than HIV+ATB group (t=3.680,t=2.516,P＜0.05).There were no significant differences of the expression of CD4+ IFNγ+ T cells among these three groups [(32.8±24.0)％ vs (40.3±1 21.9) ％ vs (46.1±31.2)％,(t=-0.939,t=-1.602,t=-0.646,P＞0.05)].ConclusionThe Th17 response is down-regulated in HIV/tuberculosis-coinfected patients,which may play an important antitubercular role in the pathogenesis of coinfection.

Objective To study the relationship of proliferation and activation of T lymphocyte subsets and disease progression in antiretroviral-naive human immunodeficiency virus(HIV)-1-infected individuals.Methods Forty-nine antiretroviral-naive,chronically HIV-1 infected patients and 16 healthy,HIV-1 negative controls were enrolled in this study.The patients were divided into 3 groups according to their CD4+T cell counts:<200×106/L,(200-350)×106/L and>350×106/L.Peripheral blood mononuclear cells(PBMC)were isolated.T cell proliferation index was measured by Ki-67 staining.T cell activation was detected by CD38 staining.The samples were analyzed by flow cytometry.The data were compared by one-way ANOVA.Results The percentage of Ki-67+cells in CIM+T ceils was 7.92%±4.37%in CD4+T cell<200×106/L group,which was significantly higher than those 0.39%d:0.24%in control group,2.61%±2.12%in(200-350)×106/k group and 2.65%±2.13%in>350 X106/L group(F=21.961,P<0.01).The percentage of Ki-67+cells in CD8+T ceils in CD4+T cells<200×106/L group was 2.87%±1.13%,which was also much higher than those in other 3 groups(0.15%±0.90%,1.40%±1.17%,1.22%±0.80%,respectively F=19.203,P<0.01).The Ki-67'CD4'T cells and Ki-67+CD8+T cells were inversely correlated with CD4+T cell counts(r=-0.654,r=-0.539,respectively;P350×106/L group(F=14.333,F=15.412,respectively;P<0.01).The expressions of Ki-67+ on CD4+ and CD8+T cells were positively correlated with CD38 expression(r=0.527,r=0.391,respectively;P=0.002).Conclusions The proliferation and activation of T lymphoeytes are enhanced during HIV/AIDS disease progression.And T eell activation may be the result of persistent immune activation.

Objective To investigate the impact of pain care standard training on the pain-related knowledge and attitude of junior nurses in orthopedics department.Methods The standard pain care training was done for the junior nurses in the orthopedics department. The scores of questionnaires related to pain-related knowledge and attitude were collected and compared between pre-and post-training. Result There was significant statistical difference in the measurements related to the junior nurse’s knowledge and attitude between pre-and post-standard training(P<0.05).Conclusion The standard pain care training can enhance junior nurses knowledge,improve the attitude towards pain,and set up apporiate pain management behavior.

Objective To explore CD59 expression on CD4+T cells in HIV infected patients and its relationship with apoptosis.Methods 12 HIV infected patients and 10 healthy donors were performed in this study.The PBMC(peripheral blood monocyte)were collected and cell surface cytokine were stained,and then were evaluated with the BD FACSCanto flow cytometry.The expression of CD59 on T lymphocyte subsets were analyzed by FACSDiva software,and the apoptosis rate of CD59+CD4+T cells and CD59-CD4+T cells in every group was analyzed respectively,then the results were compared between groups.Results Compared with healthy donor,the expression of CD59 on T cells in HIV infected patients was significantly hisher(t=5.198,P＜0.01),and the apoptosis rate of CD59+CD4+T cells had significantly higher(t=5.968,P＜0.01).The apoptosis rate of CD59-CD4+T cells was no difference between two groups (t=0.1353,P=0.8577).Condnsion HIV infection increase CD59 expression on CD4+T cells,and CD59+CD4+T cells were prone to apoptosis.

BACKGROUND:The studies have shown that the mesenchymal stem cel s derived from bone marrow and umbilical cord can be continuously cultured in vitro, and maintain the characteristics of stem cel s. The mesenchymal stem cel s can differentiate into hepatocyte-like cel s after“cocktail”induction by various cytokines. OBJECTIVE:To further identify whether umbilical cord-derived mesenchymal stem cel s in vitro co-cultured with normal hepatocytes can differentiate into hepatocyte-like cel s, and to investigate the differentiation method. METHODS:Mesenchymal stem cel s were isolated from human umbilical cord with adherent method, and the surface markers of umbilical cord-derived mesenchymal stem cel s were detected with flow cytometry. The umbilical cord-derived mesenchymal stem cel s were co-cultured with liver LO2 cel s without adding exogenous inducers. The expressions of alpha-fetoprotein, albumin and human cytokeratin 19 mRNA of hepatocyte specific markers were detected with reverse transcription PCR at 7, 14 and 21 days after culture, and periodic acid-Schiff staining was used to identify the functions. RESULTS AND CONCLUSION:Mesenchymal stem cel s could isolated from human umbilical cord successful y, showing fibroblastic morphology and adherent cel characterization. Among these cel s, 96.02%cel s were CD29 positive cel s and 96.6%cel s were CD105 positive cel s. The percentage of CD34 negative cel s was 99.65%. The percentage of CD105+CD29+double positive cel s was 94.84%. The mRNA of alpha-fetoprotein was found on the 7th day after co-cultured with LO2 cel s, and the mRNA of albumin and human cytokeratin 19 were found on the 14th day. After co-cultured for 21 days, the alpha-fetoprotein mRNA could not be observed in the co-culture group. The expressions of albumin and human cytokeratin 19 were increased at 14 days. After co-cultured for 21 days, the glycogen staining was positive. Umbilical cord-derived mesenchymal stem cel s can differentiate into hepatocyte-like cel s after co-cultured with normal hepatocytes.

Aim To study the apoptosis effect of cucurbitacin Ⅱa on non-small cell lung cancer cell lines NCI-H460 and A549 and its underlying mechanism.Methods Cell viability was assessed by CCK-8 assay.The apoptosis effect and cell cycle arrest were detected by Flow cytometry.Western blot was employed to detect the related protein.Results The proliferation of lung cancer cell lines NCI-H460 and A549 was inhibited by CuⅡa, which showed cytotoxic activity with IC50 values of 224.9 nmol·L-1 and 108.3 nmol·L-1 against NCI-H460 and A549 respectively.CuⅡa induced the cells apoptosis and cell cycle arrest at G2/M phase.The results of Western blot showed CuⅡa inhibited the phosphorylation of STAT3 and Cofilin in a dose-dependent manner.Further, CuⅡa inhibited the phosphorylation of Aurora A, in line with the important characteristics of anti-tumor effect of Aurora A kinase inhibitor with blocking cells in the G2/M phase.Conclusion CuⅡa has obvious anti-tumor effect against non-small cell lung cancer, which suggests its value as a lead compound for lung cell carcinoma.

BACKGROUND: Studying the relationship between flexibility and body composition of college students is of great significance for enhancing the levels of physical health and sports. OBJECTIVE: To investigate the relationship between sit-and-reach and body composition of college students in Guangxi Zhuang Autonomous Region and differences between sexes. METHODS: Totally 2 175 students from a Guangxi university were randomly selected. Body composition was determined by the MC-180 body composition tester. The students were divided into four groups: ≤ 12.10 cm group,＞ 12.10-16.40 cm group,＞ 16.40-20.70 group and＞ 20.70 group according to quartile of sit-and-reach measured in accordance with the National Physical Health Test Standard. All data were processed by SPSS 22.0 software. RESULTS AND CONCLUSION: Sit-and-reach was significantly correlated with body mass index, percentage of body fat, fat-free mass index, upper limb lean mass and lower limb lean mass (P ＜ 0.05), and percentage of body fat was negatively correlated with sit-and-reach (P ＜ 0.05). The body mass index, fat-free mass index, upper limb lean mass and lower limb lean mass in the ≤ 12.10 cm group were significantly lower than those in the other groups. Fat-free mass index and upper limb lean mass were correlated with sit-and-reach in male college students (P ＜ 0.05). The fat-free mass index and upper limb lean mass in the＞ 16.40-20.70 cm group were significantly higher than those in the ≤ 12.10 cm group. Therefore, there is a positive correlation between the flexibility and fat-free mass index and upper limb lean mass in college students.