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OBJECTIVE@#To investigate the effect of p-coumaric acid on apoptosis of multiple myeloma cells and its related mechanism.@*METHODS@#Multiple myeloma cell line MM.1s cells were selected and treated with different concentrations of p-coumaric acid (0, 0.4, 0.8, 1.6, 3.2 mmol/L), and the inhibition rate and half inhibition concentration (IC50) were detected by CCK-8 method. Then MM.1s cells were treated with 1/2 IC50, IC50, 2 IC50 and transfected with ov-Nrf-2 and ov-Nrf-2+IC50. The apoptosis, ROS fluorescence intensity and mitochondrial membrane potential of MM.1s cells were detected by flow cytometry, and the relative expressions of cellular Nrf-2 and HO-1 protein were detected by Western blot.@*RESULTS@#P-coumaric acid inhibited the proliferation of MM.1s cells in a dose-dependent manner(r =0.997) with an IC50 value of 2.754 mmol/L. Compared with the control group, apoptosis and ROS fluorescence intensity of MM.1s cells were significantly increased in the 1/2 IC50 group, IC50 group, 2 IC50 group and ov-Nrf-2+IC50 group (P <0.01), the expressions of Nrf-2, HO-1 protein in the IC50 group and 2 IC50 group were significantly decreased (P <0.05). Compared with the IC50 group, the cells apoptosis and ROS fluorescence intensity were significantly decreased (P <0.01), and the expressions of Nrf-2 and HO-1 protein were significantly increased in the ov-Nrf-2+IC50 group (P <0.01).@*CONCLUSION@#P-coumaric acid can inhibit the proliferation of MM.1s cells and may target the Nrf-2/HO-1 signaling pathway to affect oxidative stress in MM cells thereby inducing their apoptosis.
Subject(s)
Humans , Reactive Oxygen Species/pharmacology , Cell Line, Tumor , Multiple Myeloma , Oxidative Stress , ApoptosisABSTRACT
Objective To analyze the influencing factors of disaster resilience in medical rescue workers,to construct a prediction model for the low-level risk of disaster resilience in medical rescue workers,and to verify the predictive effect of the model.Methods Using the convenience sampling method and the snowball method,1 037 medical rescue workers who participated in disaster rescue in 18 provinces(autonomous regions and municipalities)were selected as the participants from May to July 2022.Online questionnaire surveys were conducted using general information questionnaires,disaster resilience measuring tools for healthcare rescuers,the Mindful Attention Awareness Scale,the Simple Coping Style Questionnaire and the Depression-Anxiety-Stress Scale.Univariate and multivariate logistic regression analyses were used to determine the independent influencing factors for the low level of disaster resilience of medical rescue workers.A risk prediction model was constructed,and a nomogram chart was drawn.The model's effectiveness was evaluated using the receiver operating characteristic curve(ROC)and calibration curve.The Bootstrap method was applied for internal validation.Results The logistic regression analysis showed that per capita monthly income of households,whether to participate in on-site disaster rescue,positive coping,mindfulness level,and adequacy of rescue supplies were independent influencing factors for the disaster resilience of medical rescue workers(P＜0.05).The predictive formula for the low-level risk of disaster resilience in medical rescue workers was established as follows:Logit(P)=8.741-0.381 x per capita monthly income of households-0.891 x whether to participate in on-site disaster rescue-2.544 x positive coping-0.020 x mindfulness level-0.222 x adequacy of rescue supplies.The area under the ROC curve was 0.823,and the optimal critical value was 0.353.The sensitivity and specificity were 79.12％and 71.43％,respectively.The Hosmer-Lemeshow test showed that x2=12.250(P=0.140),and the predicted curve fitted well with the ideal curve.The external validation showed that the sensitivity and specificity of the model were 75.00％and 66.39％,respectively,and the overall accuracy was 69.95％.Conclusion The prediction model in this study has sound predictive effects and can provide references and guidance for managers to select,recruit,and train medical rescue workers.
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Objective:To study the effect of spleen and marrow strengthening method combined with CAG regimen on the quality of life(QOL) of elderly patients with acute myeloid leukemia with spleen-kidney Yang deficiency syndrome.Methods:From June 2017 to October 2018, 50 elderly patients with acute myeloid leukemia with spleen-kidney Yang deficiency were randomly divided into treatment group and control group by random number table method, with 25 patients in each group.The patients in the control group were treated with CAG regimen(Ara-C+ Acla+ G-CSF), while the patients in the treatment group were treated with CAG regimen and leukemia prescription I, which was the empirical prescription for spleen and kidney Yang deficiency syndrome in elderly patients with acute myeloid leukemia.The patients were treated for two courses.The traditional Chinese medicine (TCM) syndromes and QOL scores of patients in two groups were compared and observed.Results:Before treatment, there was no statistically significant difference in the score of TCM syndromes between the two groups ( P>0.05). After treatment, the improvement of TCM syndromes in the treatment group had statistically significant difference compared with before treatment[before treatment (9.29±4.22)points, after treatment (5.04±3.83)points, t=3.656, P=0.001], but that in the control group had no statistically significant difference ( P>0.05). The treatment group was better than the control group ( t=-2.081, P=0.044). The total effective rate of the treatment group was 58.33% (14/24), which was significantly higher than that of the control group[26.32% (5/19)], and the difference was statistically significant (χ 2=5.831, P<0.05). Before treatment, there was no statistically significant difference in the total score of QOL between the two groups ( P>0.05). After treatment, the scores of QOL in both two groups were improved, the differences were statistically significant[the control group: (40.37±2.93)points vs.(38.21±2.76)points, t=2.337, P=0.025; the treatment group: (41.46±2.57)points vs.(36.54±2.34)points, t=6.929, P=0.000], and the QOL score of the treatment group was better than that of the control group ( t=-2.145, P=0.038). Conclusion:The improvement of TCM syndromes and QOL of elderly patients with acute myeloid leukemia with spleen-kidney Yang deficiency syndrome treated by spleen and marrow strengthening method combined with CAG regimen is better than that treated by CAG chemotherapy alone.
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Objective:To explore the feasibility of establishing a regional network management system to prevent and control the disability in high-risk infants. Methods:From July, 2015 to June, 2016, 1252 type B high-risk infants who born alive and registered in Lianyungang were divided into control group and experimental group by receiving network management system or not. The network high-risk infants management system was used to monitor the growth, diagnosis and early intervention of high-risk infants in the experimental group, while the control group was managed in the conventional way. A comprehensive physical examination and systematic assessment of 940 high-risk infants finally were conducted after two years. Their parents' compliance, developmental state, degree of dysplasia and function of dysplastic child were compared. Results:The compliance of parents was higher in the experimental group than in the control group (χ2 = 44.161,P < 0.001), as well as the outcome when the infants were two years old (χ2 = 204.340,P < 0.001). The younger they were found deviated and intervened, the better the outcome was (χ2 = 42.038,P < 0.001), and the less degree of dysplasia when they were two years old (χ2 = 10.508,P < 0.01). The deviation/abnormality condition was less in the experimental group than in the control group (χ2 = 17.446,P < 0.01). The development of functional area was better in the experimental group than in the control group (|t| > 2.206,P < 0.05), expect body structure (P > 0.05), in the infants with developmental deviation/abnormality. Conclusion:The establishment of network management system for high-risk infants can significantly improve the management compliance of parents and outcome of development of high-risk infants, to prevent disability.
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Objective@#To explore the effects of Yiqi Yangyin Liangxue method on platelets, interleukin-10(IL-10) and transforming growth factor beta (TGF-β) of immune thrombocytopenic purpura(ITP) model mice, and to analyze its curative effect and possible mechanism.@*Methods@#A total of 100 ITP model mice were randomly divided into blank group, model group, single Chinese medicine group, single hormone group and Chinese medicine combined with hormone group.Drug intervention was started on the 8th day after the establishment of the model, and the drug was given for a total of 14 days.The blood of mice was collected and the levels of platelets, TGF-β and IL-10 in serum of mice in each group were detected.@*Results@#There was no statistically significant difference in platelet count among all groups before modeling(F=0.556, P>0.05). Before administration, there was statistically significant difference between the model group and the blank group (t=28.207, P<0.01), there were no statistically significant differences between the model group and the traditional Chinese medicine group, hormone group, hormone+ traditional Chinese medicine group (t=-1.96, -0.464, -0.979, all P>0.05). After gastric administration, the platelet counts in the traditional Chinese medicine group[(710.45±124.52)×109/L], hormone group[(768.10±127.42)×109/L], hormone+ traditional Chinese medicine group[(908.05±89.66)×109/L] were significantly higher than that in the model group[(413.55±38.84)×109/L](t=-10.18, -11.90, -22.63, all P<0.01). After gastric administration, there was no statistically significant difference between the traditional Chinese medicine group and the hormone group(t=-1.447, P>0.05). After gastric administration, the platelet count of the hormone+ traditional Chinese medicine group was significantly higher than that of the hormone group and the traditional Chinese medicine group(t=-4.017, -5.759, all P<0.01). There was statistically significant difference in IL-10 level among groups after administration(F=32.20, P<0.01). IL-10 levels between the model group[(20.28±0.75)ng/L] and traditional Chinese medicine group[(21.41±1.40)ng/L], hormone group[(21.79±1.14)ng/L] and traditional Chinese medicine+ hormone group[(23.14±1.34)ng/L] had statistically significant differences (t=-3.18, -4.93, -8.33, all P<0.01). There was no statistically significant difference between the traditional Chinese medicine group and hormone group(t=-0.927, P>0.05). There were statistically significant differences between the traditional Chinese medicine+ hormone group and traditional Chinese medicine group, hormone group (t=-3.97, -3.43, all P<0.01). There was statistically significant difference in TGF-beta level among all groups after administration(F=31.16, P<0.01). The TGF-β levels between the model group[(82.32±3.42)ng/L] and Chinese medicine group[(88.10±8.51)ng/L], hormone group[(90.03±4.50)ng/L] and Chinese medicine combined with hormone group[(94.41±2.53)ng/L] had statistically significant differences (t=-2.82, -6.10, -12.70, all P<0.01). There was no significant difference in TGF-β level between the Chinese medicine group and hormone group(t=-0.90, P>0.05). There were statistically significant differences in in TGF-beta level between the traditional Chinese medicine+ hormone group and Chinese medicine group, hormone group (t=-3.18, -3.79, all P<0.01).@*Conclusion@#Yiqi Yangyin Liangxue method can reduce platelet destruction by regulating the levels of IL-10 and TGF-β and inhibiting immunity, and it has good therapeutic effect on ITP.
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Objective@#To observe the effect of Yiqi Yangyin Liangxue method on peripheral blood platelet count and CD4+ CD25+ regulatory T cells(Treg) in mice model of immune thrombocytopenic purpura(ITP).@*Methods@#A total of 100 mice were randomly divided into blank control group, model group, Chinese medicine group, hormone group, Chinese medicine+ hormone group, with 20 mice in each group.In addition to the blank control group, the other four groups were intraperitoneally injected with guinea pig anti-mouse platelet serum(APS) to establish the ITP model.The peripheral blood platelet counts of mice in each group were determined by animal blood analyzer before modeling, before and after gavage, and CD4+ CD25+ Treg cells in each group were detected by flow cytometry after gavage.@*Results@#After intragastric administration, compared with the model group, the peripheral blood platelet count of mice in the other groups increased significantly[(413.55±38.84)×109/L, (710.45±124.52)×109/L, (768.10±127.42)×109/L, (908.05±89.66)×109/L, t=-10.18, -11.90, -22.63, all P<0.01], and the proportion of CD4+ CD25+ Treg cells in peripheral blood increased significantly[(1.649±0.286)%, (2.000±0.193)%, (2.286±0.271)%, (2.648±1.883)%, t=-4.54, -7.221, -13.031, all P<0.01]. All indicators of the Chinese medicine+ hormone group had statistically significant differences compared with those of the Chinese medicine group and the hormone group(t=-5.759, -4.107, -10.762, -4.902, all P<0.01).@*Conclusion@#Yiqi Yangyin Liangxue method may up-regulate the expression of CD4+ CD25+ Treg cells in peripheral blood of ITP mice, thereby reducing excessive platelet damage.
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<p><b>OBJECTIVE</b>To establish a model of immature rat hypoxic-ischemic brain damage (HIBD) which was expected to be similar to periventricular leukomalacia in human preterm infants pathologically and neuroethologically, and to investigate the role of minocycline (MN) in this model.</p><p><b>METHOD</b>Totally 192 Sprague-Dawley rats (postnatal day 2, P(2)), of either sex, were randomly divided into 4 groups: normal-group, sham operation group, HIBD-group, HIBD + MN group, each group had 48 rats. HIBD group and HIBD + MN group survived the left common carotid artery (CCA) ligation followed by 4h exposure to 8% O(2). Rats in sham operation group only survived the left CCA isolation. Rats in normal group were not treated with anything. In HIBD + MN group, the rats were treated with intraperitoneal injection of minocycline 45 mg/kg, immediately after HI and every 24 h for 2 days. Brain tissues were collected on day 3, 1 week, 2 weeks, 4 weeks after HI, for hematoxylin-eosin staining and histological scoring. Frozen sections of the brains were stained with anti-O4, anti-O1 immunohistochemistry on day 3 after HI, and MBP immunohistochemistry 2 weeks after HI. Rats in the four groups underwent neuroethologic examination 4 weeks after HI.</p><p><b>RESULT</b>In the HIBD group, there were pathological changes in the periventricular white matter. The pathological changes were milder in HIBD + MN group; There was no statistically significant difference between the normal group and HIBD + MN group in the number of positively stained O4 cell (P > 0.05). The number of positively stained O4 cell in the HIBD group was significantly reduced, compared with that of normal group, sham operation group, and HIBD + MN group (23.67 ± 12.00 vs. 52.89 ± 10.68, 39.28 ± 11.78, 41.63 ± 8.41, P < 0.05). The differences in the number of positively stained O1 cell among the normal group, sham operation group, HIBD group and HIBD + MN group had no statistical significance (P = 0.093). The numbers of myelin basic protein (MBP) positively immunostained fiber bundles in the HIBD + MN group were significantly less than that of the normal group and sham operation group (P < 0.05). The numbers of MBP positively immunostained fiber bundles in the HIBD group were significantly less than that of the normal group, sham operation group, and HIBD + MN group (14.71 ± 7.42 vs. 36.67 ± 6.50, 35.50 ± 3.24, 26.33 ± 5.92, P < 0.05). The HIBD group had long-term neuroethologic abnormality. There was no statistically significant difference in the inclined plane test, hanging test and cylinder test among the HIBD + MN group, normal group, and sham operation group (P > 0.05). The scores of the HIBD group had statistical significantly among the normal group, sham operation group and HIBD + MN group (P < 0.05). In the open field test, there was no statistically significant difference between the HIBD group and HIBD + MN group (P = 0.772), but there was significant difference between these two groups and the normal group, sham operation group (P < 0.05).</p><p><b>CONCLUSION</b>Minocycline protects the pre-oligodendrocyte and has protective effects in terms of long-term neuroethology.</p>
Subject(s)
Animals , Rats , Animals, Newborn , Disease Models, Animal , Hypoxia-Ischemia, Brain , Drug Therapy , Minocycline , Therapeutic Uses , Rats, Sprague-DawleyABSTRACT
OBJECTIVE@#To explore the relationship among non-acoholic fatty liver disease (NAFLD), high sensitivity reactive C protein (hsCRP) and insulin resistance.@*METHODS@#Workers of an enterprise in Changsha for health examination in Second Xiangya Hospital from October to December, 2006, NAFLD group (243 patients) and a control group without fatty liver disease (361 patients) were randomly drawn. Questionnaire, physical examination, fasting plasma glucose, serum lipid-profile, alanine aminotransferase (ALT),blood uric acid, and abdominal ultrasonographic examination were undertaken in the 2 groups.@*RESULTS@#The moderate NAFLD group had significantly higher hsCRP concentration and homeostasis model assessment of insulin resistance (HOMA-IR) as compared with the mild NAFLD group (P or = 1 mg/L). Compared with the low concentration group, the odds ratio of the high concentration group for prevalence of NAFLD was 5.937(P<0.001). Multi-factor logistic regression analysis demonstrated that NAFLD was independently correlated with hsCRP or HOMA-IR after adjustment for sex, age and metabolic components (OR=2.044, 7.896,P<0.01).@*CONCLUSION@#NAFLD is closely correlated with hsCRP and HOMA-IR. Insulin resistance and elevated hsCRP concentration are the independent risk factors for the presence of NAFLD.
Subject(s)
Adult , Female , Humans , Male , Middle Aged , C-Reactive Protein , Metabolism , China , Epidemiology , Fatty Liver , Epidemiology , Metabolism , Insulin Resistance , Regression Analysis , Risk FactorsABSTRACT
<p><b>OBJECTIVE</b>To characterize the biologic featrues of hepatic oval cells and their protein expression profiles during induced differentiation in vitro.</p><p><b>METHODS</b>Rat hepatic oval cells were treated with epidermal growth factor (EGF) and hepatocyte growth factor (HGF) in vitro, followed by morphological and molecular marker assessment by electromicroscopy, immunocytochemistry, RT-PCR and protein expression chip technology.</p><p><b>RESULTS</b>Ten weeks after induction, the levels of GST-P mRNA and M2-PK mRNA were significantly reduced, whereas those of ALB and CK18 were elevated. Significant variations of expression was seen in 8 protein species during the course of the induced differentiation.</p><p><b>CONCLUSION</b>Combined EGF and HGF treatment in vitro induces cell differentiation of hepatic oval cells, a process in which 8 protein species may play some regulatory roles.</p>
Subject(s)
Animals , Rats , Albumins , Metabolism , Cell Differentiation , Epidermal Growth Factor , Pharmacology , Glutathione Transferase , Genetics , Hepatocyte Growth Factor , Pharmacology , Hepatocytes , Cell Biology , Metabolism , Immunohistochemistry , Keratin-18 , Metabolism , Protein Array Analysis , Pyruvate Kinase , Genetics , RNA, Messenger , Metabolism , Reverse Transcriptase Polymerase Chain ReactionABSTRACT
<p><b>OBJECTIVE</b>To study the expression of membrane MICA (mMICA), soluble MICA (sMICA) and NKG2D receptor in cases of osteosarcoma and to analyze its clinical significance.</p><p><b>METHODS</b>Expression of mMICA in osteosarcoma tissue of 43 cases was detected with immunohistochemistry. Expression of NKG2D in peripheral blood lymphocytes of 16 cases was analyzed by flow cytometry. Serum level of soluble MICA (sMICA) was measured by ELISA.</p><p><b>RESULTS</b>mMICA was widely expressed in osteosarcoma tissue (37/43). Expression of NKG2D in peripheral blood lymphocytes was significantly decreased. High levels of mMICA and NKG2D expression were associated with better differentiation and earlier tumor stage of osteosarcoma (P < 0.05). A significant increase in serum level of sMICA was demonstrated in patients with metastasis and advanced tumor.</p><p><b>CONCLUSIONS</b>The mMICA expression in tumor tissue, NKG2D expression in peripheral lymphocytes and serum sMICA level correlate with the differentiation and stage of osteosarcoma. These parameters may thus represent potential diagnostic and prognostic markers in patients with osteosarcoma. Manipulation of the MICA-NKG2D pathway may become a target of immunotherapy for osteosarcoma.</p>