Effects and underlying mechanisms of telomerase reverse transcriptase in carcinogenesis and cancer progression / 肿瘤

As a limiting factor in telomerase activity,telomerase reverse transcriptase(TERT)controls cellular senescence and apoptosis by maintaining telomere length.TERT is not expressed or little expressed in most normal cells.However,the abnormal overexpression of TERT promotes the ability of tumor cells to replicate indefinitely.This review summarizes the regulatory mechanisms of TERT expression,including the main transcription factor families,single nucleotide polymorphism sites,and epigenetic modification changes such as DNA methylation,histone modification,and non-coding RNA.The role of these molecular mechanisms as well as significant TERT single-base variants and virus integration variants in the occurrence and development of cancer are reviewed.On this basis,its application in tumor diagnosis and prognosis is discussed.

Contribution of tobacco smoking to the risk of novel coronavirus infection and related mechanisms / 上海预防医学

The severe acute respiratory syndrome coronavirus 2 （SARS-CoV-2） and its variants are still globally spreading. Vaccines can reduce the mortality， but cannot eliminate the risk of infection. The identification and protection of the high-risk susceptible population remains of great importance for the prevention and control of SARS-CoV2 and other coronavirus infections. Smoking is an important risk factor for many respiratory diseases， and therefore may also influence the risk of SARS-CoV2 infection and the disease progression after infection. This study reviewed the epidemiological and mechanistic evidence supporting the relationship between tobacco exposure and SARS-CoV2 infection， summarized the contributing effects of tobacco exposure to the infection risk， disease severity， and mortality of COVID-19， and analyzed the molecular mechanisms by which cigarette smoking affects COVID-19 through regulating inflammatory microenvironment and gene expression.

Role of androgen receptors in the development of hepatocellular carcinoma / 上海预防医学

Hepatocellular carcinoma （HCC） has emerged as a significant public health concern， posing a serious threat to the lives and health of residents in China. Furthermore， the incidence and mortality rates of HCC are notably higher in males than in females. Androgen receptors （AR） can contribute to the occurrence of male-specific cancers such as prostate cancer， suggesting a potential link to the increased susceptibility of males to HCC. Elucidating the cancer-promoting mechanism of AR and developing specific targeted interventions are effective ways to advance tertiary prevention of HCC and improve patient prognosis. This paper reviews the relevant evidence of AR’s role in promoting the occurrence and development of HCC， summarizes relevant mechanisms discovered to date， including promoting the stemness of HCC cells， altering the immune microenvironment， regulating key signaling pathways， inducing glycolysis in hepatocellular carcinoma， and synergizing with hepatitis B virus to promote HCC. Additionally， research directions for targeted interventions in HCC through AR-related signaling pathways are discussed.

Comparative analysis of epidemiological trends of COVID-19 in Shanghai and New York City / 上海预防医学

ObjectiveTo assess the effects of countermeasures against coronavirus disease 2019 （COVID-19） in Shanghai from March to May 2022 in comparison with epidemiological trend of COVID-19 in New York City. MethodsDaily confirmed cases， asymptomatic SARS-CoV-2 carriers， and daily deaths were obtained in the Shanghai Municipal Health Commission and the Center for Disease Control and Prevention （CDC） of the United States. Descriptive study was conducted by using these data. ResultsFrom March 1 to May 17， the number of daily asymptomatic SARS-CoV-2 infections in Shanghai was up to 58 times as large as that of daily confirmed cases； however， the number of daily confirmed cases in Shanghai was generally less than that in New York in the same time period. At the peak of the COVID-19 epidemic， the growth of daily attack rate in Shanghai was significantly lower than that in New York （P<0.05）. Moreover， the number of daily death was evidently less than that in New York. In addition， the vaccination rate in the elderly （aged ≥60 years） in Shanghai was evidently lower than that in New York （aged ≥65 years）. ConclusionThe COVID-19 epidemics in Shanghai from March to May 2022 and in New York after December 2021 were both caused by the Omicron variant. Compared with the Delta variant， the Omicron variant has stronger replication ability and infectivity， resulting in challenges to the containment of the epidemic in metropolis such as Shanghai and New York City. The epidemic in New York City remained crucial due to absence of effective countermeasures， while that in Shanghai has been effectively contained with strict countermeasures. The prevention and control strategies may be adjusted along with the continual evolution of SARS-CoV-2 and increasing trend of imported COVID-19 cases.

The role of interferon λ on antiviral immunity in upper respiratory tract / 上海预防医学

Upper respiratory tract is directly connected with the external environment， and its natural immune system is the first line of defense against pathogens. In antiviral infection， interferon （IFN） is the main component of the antiviral natural immune system and IFN-λ is a newly discovered immune effector molecule that is mainly produced in the mucosal barrier. IFN-λ exerts a biological role through Janus kinase （JAK） and signal transducer and activator of transcription （STAT） signaling pathway， and plays an important part in regulating innate and acquired immunity of respiratory mucosa. IFN-λ principally expresses on the mucosal barrier with a long-lasting antiviral impact and controls immune-inflammatory damage， which is becoming a new focus of antiviral immunity research in the upper respiratory tract， especially in fighting against 2019 novel coronavirus diseases （COVID-19）. Thus， we summarize the research progress of IFN-λ antiviral immunity in the upper respiratory tract to provide new insight in the prevention and treatment of viral infection in the upper respiratory tract.

Analysis of the intention of clinicians to adopt contrast-enhanced ultrasound / 中华医院管理杂志

Objective:Based on the technology-organization-environment model and the theory of planned behavior, to construct a theoretical model for exploring the influencing factors of the adoption intention of hepatic contrast-enhanced ultrasound by clinicians in a medical alliance.Methods:By agency of self-administered scales, a questionnaire survey was conducted among the clinicians in liver disease-related departments of four medical alliances from Fujian and Jiangxi provinces between February and August, 2019.Results:Behavioral attitudes, subjective norms, perceived behavioral control, organizational atmosphere, and industry technical environment all had positive impacts on the clinicians′ intention to adopt hepatic contrast-enhanced ultrasound technology in medical alliances. The total influence of the five types of factors on the adoption intention of hepatic contrast-enhanced ultrasound was as follows: perceived behavioral control(0.779), subjective norms(0.635), industry technical environment(0.578), behavioral attitudes(0.359), and organizational atmosphere(0.218).Conclusions:It is recommended to strengthen the intention to adopt corresponding health technologies by providing adequate technical education and training, giving play to the leading role of core members, and building an organizational atmosphere of advocating technological innovation and communication.

A bibliometric analysis on cohort study of liver cancer in China / 中华流行病学杂志

Objective@#To retrospectively analyze the application trend of cohort study in the field of liver cancer in past 27 years and to look forward to the future development trend.@*Methods@#Chinese and English papers reporting the cohort studies of liver cancer conducted in the mainland of China since 1991 were included. The literature management software was used to analyze the publication time, institution, type and objective of the studies and the follow-up performance. Statistical analysis was carried out by using SPSS 21.0.@*Results@#The number and quality of the papers reporting liver cancer-related cohort studies increased significantly in past 27 years and a core English journal group of this field has formed. The average annual growth rates of Chinese and English papers published were 20.4% and 35.2% respectively. About 52.3% of the Chinese papers and 73.5% of the English papers were published in past five years and the quality of these papers was high. The Chinese papers published on Chinese core journals accounted for 49.2%, and the English papers published on SCI periodicals (IF>3) accounted for 47.3%. For the study objective, those published on the domestic journals mainly focused on the pathogenesis of hepatoma (41.5%), studies with large sample size was the common form. The SCI studies mainly focused on the prognosis of liver cancer (40.7%). High-quality SCI papers are more interested in the studies of prognosis, and survival analysis was the common form.@*Conclusions@#The application of cohort study in the field of liver cancer gradually increased in China. Large-scale study and prognosis analysis were conducted commonly. However, it is necessary to further improve the researchers’ understanding of cohort study, improve the follow-up quality, and increase the application of scientific evaluation methods, such as survival analysis, for the better solving of clinical problems.

Risk factors analysis for steroid-resistant acute graft versus host disease after haploidentical hematopoietic stem cell transplantation / 中华血液学杂志

Objective@#To analyze the risk factors of steroid resistant acute graft- versus-host disease (aGVHD) after haploidentical hematopoietic stem cell transplantation (haplo-HSCT) .@*Methods@#The clinical data of adult patients with acute myeloid leukemia (AML) /Myelodysplastic syndrome (MDS) who developed aGVHD after haplo-HSCT in Peking University Institute of Hematology from January 1st, 2010 to December 31st, 2012 were retrospectively reviewed.@*Results@#A total of 85 patients were enrolled in the study, including 55 males and 30 females, with a median age of 30 (19-67) years. After steroid therapy, there were 53 (62.4%) , 6 (7.1%) and 26 (30.6%) patients achieved complete remission (CR) , partial remission (PR) and non-remission (NR) , respectively. The CR rates of the grade Ⅰ/Ⅱ and Ⅲ/Ⅳ aGVHD by steroid therapy were 66.2% (51/77) vs 25.0% (2/8) (χ2=3.639, P=0.048) , respectively. The CR rates of the patients with aGVHD involving 1 target organ and 2 target organs were 77.4% (48/62) vs 21.7% (5/23) (χ2=22.157, P<0.001) . The CR rates of patients with standard risk (SR) and high risk (HR) Minnesota risk score was 67.5% (52/77) vs 12.5% (1/8) (χ2=7.153, P=0.004) . The mononuclear cells≥8.33×108/kg and the HR Minnesota risk score were independent risk factors for steroid-resistant aGVHD in multivariate analysis. Between Minnesota risk score SR (77 cases) and HR (8 cases) groups, the OS rates at 22 months after transplantation were (90.3±3.8) %vs (75.0±15.3) % (χ2=2.831, P=0.092) . After steroid treatment for aGVHD, the OS rates at 22 months in the CR group (53 cases) and non-CR group (32 cases) were (95.2±3.4) %vs (78.6±7.9) % (χ2=5.287, P=0.021) respectively.@*Conclusion@#The Minnesota risk score and mononuclear cells count are effective tool for predicting steroid-resistant aGVHD after haplo-HSCT.

Efficacy of transversus abdominis plane block with different doses of dexmedetomidine mixed with ropivacaine in pediatric patients undergoing laparoscopic surgery with general anesthesia / 中华麻醉学杂志

Objective To evaluate the efficacy of transversus abdominis plane block (TAPB) with different doses of dexmedetomidine mixed with ropivacaine in the pediatric patients undergoing laparoscopic surgery with general anesthesia.Methods Eighty patients of both sexes,aged 3-6 yr,weighing 10-30kg,scheduled for elective single-channel laparoscopic appendectomy,were divided into 4 groups (n =20each) using a random number table method:0.5 μg/kg dexmedetomidine plus ropivacaine group (group DR1),1.0 μg/kg dexmedetomidine plus ropivacaine group (group DR2),1.5 μg/kg dexmedetomidine plus ropivacaine group (group DR3),and ropivacaine group (R group).Bilateral TAPB was performed under ultrasound guidance after the end of anesthesia induction.In group TR,0.25％ ropivacaine 0.5 ml/kg was injected,the 0.5 ml/kg mixture of 0.5,1.0 and 1.5 μg/kg dexmedetomidine and ropivacaine at a final concentration of 0.25％ was injected in DR1,DR2 and DR3 groups.Anesthesia was maintained by intravenously infusing remifentanil and inhaling sevoflurane.Cisatracurium was intermittently injected to maintain muscle relaxation.Ibuprofen was taken orally to maintain postoperative FLACC score ＜4.The intraoperative consumption of remifentanil,tracheal extubation time,duration of anesthetic recovery room stay,requirement for ibuprofen,and occurrence of opioids-and TAPB-related complications were recorded.Results There was no significant difference in the intraoperative consumption of remifentanil or tracheal extubation time between four groups (P＞0.05).Compared with group R,the requirement for ibuprofen was significantly decreased in DR2 and DR3 groups,the duration of anesthetic recovery room stay was significantly prolonged in group DR3 (P＜0.05),and no significant change was found in the requirement for ibuprofen in group DR1 or in the duration of anesthetic recovery room stay in DR1 and DR2 groups (P＞0.05).Compared with group DR1,the duration of anesthetic recovery room stay was significantly prolonged,and the requirement for ibuprofen was decreased in group DR3,and the requirement for ibuprofen was significantly decreased (P＜0.05),and no significant change was found in the duration of anesthetic recovery room stay in group DR2 (P＞0.05).Compared with group DR2,the duration of anesthetic recovery room stay was significantly prolonged (P＜0.05),and no significant change was found in the other parameters in group DR3 (P＞ 0.05).No patients developed opioids-or TAPB-related complications.Conclusion TAPB with 1.0 μg/kg dexmedetomidine mixed with ropivacaine provides good efficacy for the pediatric patients undergoing laparoscopic surgery with general anesthesia.

Efficacy of transversus abdominis plane block with different doses of dexmedetomidine mixed with ropivacaine in pediatric patients undergoing laparoscopic surgery with general anesthesia / 中华麻醉学杂志

Objective@#To evaluate the efficacy of transversus abdominis plane block (TAPB) with different doses of dexmedetomidine mixed with ropivacaine in the pediatric patients undergoing laparoscopic surgery with general anesthesia.@*Methods@#Eighty patients of both sexes, aged 3-6 yr, weighing 10-30 kg, scheduled for elective single-channel laparoscopic appendectomy, were divided into 4 groups (n=20 each) using a random number table method: 0.5 μg/kg dexmedetomidine plus ropivacaine group (group DR1), 1.0 μg/kg dexmedetomidine plus ropivacaine group (group DR2), 1.5 μg/kg dexmedetomidine plus ropivacaine group (group DR3), and ropivacaine group (R group). Bilateral TAPB was performed under ultrasound guidance after the end of anesthesia induction.In group TR, 0.25% ropivacaine 0.5 ml/kg was injected, the 0.5 ml/kg mixture of 0.5, 1.0 and 1.5 μg/kg dexmedetomidine and ropivacaine at a final concentration of 0.25% was injected in DR1, DR2 and DR3 groups.Anesthesia was maintained by intravenously infusing remifentanil and inhaling sevoflurane.Cisatracurium was intermittently injected to maintain muscle relaxation.Ibuprofen was taken orally to maintain postoperative FLACC score <4.The intraoperative consumption of remifentanil, tracheal extubation time, duration of anesthetic recovery room stay, requirement for ibuprofen, and occurrence of opioids- and TAPB-related complications were recorded.@*Results@#There was no significant difference in the intraoperative consumption of remifentanil or tracheal extubation time between four groups (P>0.05). Compared with group R, the requirement for ibuprofen was significantly decreased in DR2 and DR3 groups, the duration of anesthetic recovery room stay was significantly prolonged in group DR3 (P<0.05), and no significant change was found in the requirement for ibuprofen in group DR1 or in the duration of anesthetic recovery room stay in DR1 and DR2 groups (P>0.05). Compared with group DR1, the duration of anesthetic recovery room stay was significantly prolonged, and the requirement for ibuprofen was decreased in group DR3, and the requirement for ibuprofen was significantly decreased (P<0.05), and no significant change was found in the duration of anesthetic recovery room stay in group DR2 (P>0.05). Compared with group DR2, the duration of anesthetic recovery room stay was significantly prolonged (P<0.05), and no significant change was found in the other parameters in group DR3 (P>0.05). No patients developed opioids- or TAPB-related complications.@*Conclusion@#TAPB with 1.0 μg/kg dexmedetomidine mixed with ropivacaine provides good efficacy for the pediatric patients undergoing laparoscopic surgery with general anesthesia.

Follistatin-like protein 1 plays a tumor suppressor role in clear-cell renal cell carcinoma / 癌症

BACKGROUND@#We previously showed that the expression of follistatin-like protein 1 (FSTL1) was significantly down-regulated in metastatic clear-cell renal cell carcinoma (ccRCC). In this study, we aimed to characterize the role of FSTL1 in the development of ccRCC.@*METHODS@#The effects of FSTL1 on cell activity and cell cycle were investigated in ccRCC cell lines with altered FSTL1 expression. Gene expression microarray assays were performed to identify the major signaling pathways affected by FSTL1 knockdown. The expression of FSTL1 in ccRCC and its effect on postoperative prognosis were estimated in a cohort with 89 patients.@*RESULTS@#FSTL1 knockdown promoted anchorage-independent growth, migration, invasion, and cell cycle of ccRCC cell lines, whereas FSTL1 overexpression attenuated cell migration. FSTL1 knockdown up-regulated nuclear factor-κB (NF-κB) and hypoxia-inducible factor (HIF) signaling pathways, increased epithelial-to-mesenchymal transition, up-regulated interleukin-6 expression, and promoted tumor necrosis factor-α-induced degradation of NF-κB inhibitor (IκBα) in ccRCC cell lines. FSTL1 immunostaining was selectively positive in epithelial cytoplasm in the loop of Henle, and positive rate of FSTL1 was significantly lower in ccRCC tissues than in adjacent renal tissues (P < 0.001). The multivariate Cox regression analysis showed that the intratumoral FSTL1 expression conferred a favorable independent prognosis with a hazard ratio of 0.325 (95% confidence interval 0.118-0.894). HIF-2α expression was negatively correlated with FSTL1 expression in ccRCC specimens (r = - 0.229, P = 0.044). Intratumoral expression of HIF-2α, rather than HIF-1α, significantly predicted an unfavorable prognosis in ccRCC (log-rank, P = 0.038).@*CONCLUSIONS@#FSTL1 plays a tumor suppression role possibly via repressing the NF-κB and HIF-2α signaling pathways. To increase FSTL1 expression might be a candidate therapeutic strategy for metastatic ccRCC.

Clinical significance of miR-210 expression in breast cancer tissues and its influence on malignant be-havior of triple negative breast cancer cells / 国际肿瘤学杂志

Objective To investigate the expression and clinical significance of microRNA-210 (miR-210)in breast cancer tissues,and to investigate its effect on the proliferation and metastasis of human triple negative breast cancer cell line MDA-MB-231 in vitro. Methods The breast cancer tissues and paracancerous tissues in 82 patients were collected in the Department of Pathology of Hunan Cancer Hospital from December 2013 to September 2015. Quantitative real-time polymerase chain reaction (qRT-PCR)technique was used to detect the expression level of miR-210 in tissues and cells. The relationship between the expression of miR-210 and clinical data and prognosis of patients were analyzed. The triple negative breast cancer cell line MDA-MB-231 transfected with full-length miR-210 plasmid was regarded as test group,and the cell transfected with blank vector was regarded as control group. CCK-8 assay was used to detect the proliferation ability of cells in both groups. Transwell invasion and migration assays were used to detect the metastasis and invasion ability of cells. Results The results of qRT-PCR showed that the expression level of miR-210 was 0. 198 ± 0. 014 in breast cancer tissues,which was significantly higher than that in paracancerous tissues (0. 084 ± 0. 009),and the difference was statistically significant (t = 8. 141,P < 0. 001). The expression level of miR-210 in triple nega-tive breast cancer tissues was 0. 254 ± 0. 026,which was significantly higher than that in non-triple negative breast cancer tissues (0. 167 ± 0. 015),and the difference was statistically significant (t = 3. 175,P =0. 003). There were significant differences in TNM staging and molecular typing between the patients with high and low expression of miR-210 (χ2 = 7. 859,P = 0. 005;χ2 = 7. 053,P = 0. 008). The 4-year survival rate of patients with high expression of miR-210 was significantly lower than that of patients with low expression of miR-210 (49. 37％ vs. 76. 80％),and the difference was statistically significant (χ2 = 4. 743,P = 0. 024). The results of qRT-PCR showed that the expression of miR-210 in cells in test group was 0. 517 ± 0. 038,which was significantly higher than that in control group (0. 284 ± 0. 022),and the difference was statistically significant (t = 9. 280,P < 0. 001). The results of CCK-8 assay showed that the proliferation abilities of the test group were significantly higher than those of the control group in 48,72 and 96 h (3. 771 ± 0. 452 vs. 3. 206 ± 0. 314;7. 662 ± 0. 619 vs. 6. 736 ± 0. 552;15. 477 ± 1. 425 vs. 11. 592 ± 1. 243),and the differences were statistically significant (t = 2. 296,P = 0. 025;t = 2. 496,P = 0. 019;t = 4. 594,P = 0. 001). The results of Transwell invasion assay showed that the cell number of test group in inferior surface was 107. 8 ± 13. 0,which was significantly higher than that of control group (74. 4 ± 10. 9),and the difference was statistically significant (t = 3. 732,P = 0. 001). The results of Transwell migration assay showed that the cell number of test group in inferior surface was 136. 5 ± 18. 5,which was significantly higher than that of control group (87. 4 ± 15. 7), and the difference was statistically significant (t = 4. 256,P < 0. 001). Conclusion The expression of miR-210 in breast cancer tissues is high,and its expression is closely related to progression,malignancy and progno-sis of patients. In vitro,miR-210 can promote the malignant behavior of triple negative breast cancer cell line MDA-MB-231. It is a potential molecular marker and targeted treatment site.

Comparison of internal jugular vein diameter and brachial artery peak velocity variation in predicting fluid responsiveness / 中华麻醉学杂志

Objective To compare internal jugular vein diameter and brachial artery peak velocity variation (VVp) in predicting fluid responsiveness.Methods Sixty American Society of Anesthesiologists physical status Ⅰ or Ⅱ patients,of New York Heart Association I,aged 18-64 yr,scheduled for elective gastrointestinal surgery under general anesthesia,were included in this study.Six percent hydroxyethyl starch 130/0.47 ml/kg was infused at a rate of 0.4 ml · kg-1 · min-1 after induction of anesthesia.The patients with the changing rate of stroke volume variation (ASVV) more than or equal to 15％ were included in responsiveness group and patients with ASVV less than 15％ were included in non-responsiveness group after volume expansion.Immediately after volume expansion and at 3 min after volume expansion,mean arterial pressure,central venous pressure and heart rate were recorded,the maximum diameter of the internal jugular vein at the end of inspiration (IJVmax) and the minimum diameter of the internal jugular vein at end of expiration (IJVmin) and brachial artery peak velocity were measured using an ultrasonic instrument,and the variation of internal jugular vein respiration (VIJV) and VVp were calculated.The receiver operating characteristic curve was used to evaluate the accuracy of IJV IJVmin,VIJV and VVp in predicting fluid responsiveness.Results There were 31 patients in responsiveness group and 29 patients in non-responsiveness group.Compared with non-responsiveness group,mean arterial pressure,central venous pressure,IJVmax and IJVmin were significantly decreased and heart rate,VIJV and VVp were increased immediately after volume expansion in responsiveness group (P＜0.05).The areas under receiver operating characteristic curve (AUC) of IJV IJVmin,VIJV and VVp were 0.753,0.948,0.837 and 0.832,respectively.AUC IJVmax,AUCVIJV and AUCVVp were significantly decreased when compared with AUC IJVmin (P＜0.05).Conclusion The accuracy of IJVmax is higher than that of VVp in predicting intraoperative fluid responsiveness in the patients.

Regeneration of functional alveoli by adult human SOX9 airway basal cell transplantation

Irreversible destruction of bronchi and alveoli can lead to multiple incurable lung diseases. Identifying lung stem/progenitor cells with regenerative capacity and utilizing them to reconstruct functional tissue is one of the biggest hopes to reverse the damage and cure such diseases. Here we showed that a rare population of SOX9 basal cells (BCs) located at airway epithelium rugae can regenerate adult human lung. Human SOX9 BCs can be readily isolated by bronchoscopic brushing and indefinitely expanded in feeder-free condition. Expanded human SOX9 BCs can give rise to alveolar and bronchiolar epithelium after being transplanted into injured mouse lung, with air-blood exchange system reconstructed and recipient's lung function improved. Manipulation of lung microenvironment with Pirfenidone to suppress TGF-β signaling could further boost the transplantation efficiency. Moreover, we conducted the first autologous SOX9 BCs transplantation clinical trial in two bronchiectasis patients. Lung tissue repair and pulmonary function enhancement was observed in patients 3-12 months after cell transplantation. Altogether our current work indicated that functional adult human lung structure can be reconstituted by orthotopic transplantation of tissue-specific stem/progenitor cells, which could be translated into a mature regenerative therapeutic strategy in near future.

Comparative analysis of the function of T lymphocyte subsets in 175 Uighur and Han ethnic oil refining workers / 国际检验医学杂志

Objective To investigate the influence of long-term exposure to oil and gas toxicants on the peripheral blood T lym-phocyte subsets in Karamay Uygur and Han refining workers and the underlying mechanism.Methods 175 cases of Uighur and Han refinery workers who had long-term close contact with poison of oil and gas(112 cases of Han people and 63 cases of Uygur people)and 110 healthy people(70 cases of Han people,40 cases of Uighur)were selected as research subject.The peripheral blood T lymphocyte subsets of all cases were detected for comparative analysis.Results Compared with healthy control group,the median of CD4+in the uighur refinery workers was significantly reduced(P<0.05);the CD8+in Han ethnic refinery workers was signifi-cantly lower,while the ratio of CD4+/CD8+increased significantly(P<0.05).Compared with Han ethnic,the median of CD3+, CD8+in uighur significantly increased,while the ratio of CD4+/CD8+decreased significantly(P<0.05).Conclusion Long-term close contact(more than 5 years)of oil and gas poison will significantly reduce the function of peripheral blood T lymphocyte sub-sets of refinery workers,and the effect on Han ethnic oil refinery workers was significantly higher than that on Uighur,,so corre-sponding measures on effective occupational protection are necessary to carry out.

Effects of Shen Hong Bu Xue Granule on expressions of EPO mRNA in kidney tissue and GM-CSF mRNAin bone marrow tissue in mice with blood deficiency / 吉林大学学报(医学版)

Objective:To observe the effects of Shen Hong Bu Xue Granule(SHBXG) on the expression levels of erythropoietin(EPO)mRNA in kidney tissue and granulocyte-macrophage colony-stimulating factor (GM-CSF) mRNA in bone marrow tissue of the mice with blood deficiency,and to investigate the protective effect of SHBXG on the blood deficiency mice and its mechanism.Methods:The mouse model of blood deficiency was established with acetylphenylhydrazine(APH) and cytoxan(CTX).A total of 60 mice were divided into blank control group,model group,Compound E-jiao Slurry group and low,middle,high doses of SHBXG groups(n=10).The serum,kidney and bone marrow tissues from all the mice were collected after 14 d consecutive administration.The levels of red blood cells(RBC),hemoglobin level(HGB),hematocrit(HCT),leukocytes(WBC),and platelet(PLT) in blood of the mice were detected by automatic blood analyzer;the levels of serum EPO and GM-CSF of the mice in various groups mice were detected by ELISA method;the expression levels of EPO mRNA in kidney tissue and GM-CSF mRNA in bone marrow tissue of the mice were detected by RT-PCR method.Results:The results of automatic blood analyzer showed that the levels of RBC,HGB,HCT,and PLT of the mice in Compound E-jiao Slurry group and different doses of SHBXG groups were increased significantly compared with model group (P<0.05 or P<0.01);the levels of WBC of mice in Compound E-jiao Slurry group and high dose of SHBXG group were increased significantly compared with model group(P<0.05).The ELISA results showed that the levels of serum EPO and GM-CSF of the mice in Compound E-jiao Slurry group and different doses of SHBXG groups were increased significantly compared with model group(P<0.05).The PC-PCR results showed that the expression levels of EPO mRNA in kidney tissue and GM-CSF mRNA in bone marrow tissue of the mice in Compound E-jiao Slurry group and middle and high doses of SHBXG groups were increased significantly compared with model group(P<0.05 or P<0.01).Conclusion:SHBXG could improve the blood deficiency symptom in the mice with blood deficiency,and its mechanism may be related to increasing the expression levels of EPO mRNA in kidney tissue and GM-CSF mRNA in bone marrow tissue of the mice.

Influence of Alismatis Combined with Bifendateon Cytochrome P450 in Rat / 医药导报

Objective To research the influence of Alismatis combined with bifendate on cytochrome P 450 in rat liver microsomes. Methods Twenty four healthy male SD rats were randomly divided into four groups:the experimental groups were given Alismatis at 140 mg·kg-1 , bifendateat 2.18 mg·kg-1 , and Alismatis plus bifendate at 140 mg+2.18 mg·kg-1 ,while the blank control group was given 0. 9% sodium chloride at 5 Ml · kg-1 . The liver microsomes were prepared upon differential centrifugation 7 days after administration.The microsomal protein concentration, cytochrome P450 content, Cytb5 content, NADPH cytochrome C reductase activity and amino pyrine N removal of methyl enzyme activity, erythromycin demethylase activity were determined by UV respectively. Results Compared with the normal control group, the combination use of Alismatis and bifendate redued the microsome content and cytochrome P450 content, while it increased the NADPH cytodrome C activity. The concentrations of cytochrome P450 were both increased by Alismatis and bifendate. Conclusion In contrast, combination ofAlismatis and bifendate reduces cytochrome P450 content which has a negative effect on phase I drug metabolism.Moreover, the combination of Alismatis and bifendate induced NADPH- cytochrome C reductase, accelerated the reduction of cytochrome P450 and inhibited cytochrome P450 isoform CYP2E1 activity.

Influence of Alismatis Combined with Bifendateon Cytochrome P450 in Rat / 医药导报

Objective To research the influence of Alismatis combined with bifendate on cytochrome P 450 in rat liver microsomes. Methods Twenty four healthy male SD rats were randomly divided into four groups:the experimental groups were given Alismatis at 140 mg·kg-1 , bifendateat 2.18 mg·kg-1 , and Alismatis plus bifendate at 140 mg+2.18 mg·kg-1 ,while the blank control group was given 0. 9% sodium chloride at 5 Ml · kg-1 . The liver microsomes were prepared upon differential centrifugation 7 days after administration.The microsomal protein concentration, cytochrome P450 content, Cytb5 content, NADPH cytochrome C reductase activity and amino pyrine N removal of methyl enzyme activity, erythromycin demethylase activity were determined by UV respectively. Results Compared with the normal control group, the combination use of Alismatis and bifendate redued the microsome content and cytochrome P450 content, while it increased the NADPH cytodrome C activity. The concentrations of cytochrome P450 were both increased by Alismatis and bifendate. Conclusion In contrast, combination ofAlismatis and bifendate reduces cytochrome P450 content which has a negative effect on phase I drug metabolism.Moreover, the combination of Alismatis and bifendate induced NADPH- cytochrome C reductase, accelerated the reduction of cytochrome P450 and inhibited cytochrome P450 isoform CYP2E1 activity.

Health technology assessment in China: challenges and opportunities / 《全球健康杂志（英文）》

Objectives:Economic growth and rapid development of health technology in China have created opportunities to strengthen health technology assessment (HTA) capacity.Over the time,HTA institutions have been established to conduct HTA related work.This study reviewed the current status of HTA in China and analysed the challenges of HTA development in the context of health reform under"new normal"economy.Methods:Literature review and webpage searches were used to document the development of HTA in China.An institutional survey has also been conducted to collect information on the HTA research institutions in China.Results:The number of articles and research projects on HTA were rising and are continuing to rise.HTA development has made substantial progress in China in terms of growing number of research institutions and qualified HTA workforce.However,HTA has notable weaknesses such as low capacity for conducting HTA research,limited experience in HTA researchers,and lack of knowledge translation.Conclusion:Currently,the translation of HTA findings to policy-making is limited and the integration of HTA in the policy-making processes is still in its infancy.The HTA development in China has had opportunities due to demands of health care,health insurance,and health technology as a result of health reform.Capacity building and institutionalization of HTA are urgently needed for further development of HTA in China.

A prospective study of the efficacy and safety of maintenance therapy with recombinant human thrombopoietin in patients with primary immune thrombocytopenia: a multicenter study / 中华血液学杂志

Objective@#To evaluate the efficacy and safety of maintenance therapy with reduced dose of rhTPO in the patients with primary immune thrombocytopenia (ITP) who attained stable platelet (PLT) counts after daily administration of rhTPO.@*Methods@#Treatment was started with a daily administration of rhTPO (300 U/kg) for 2 consecutive weeks. Patients who attained stable PLT≥50×109/L were enrolled to maintenance therapy starting with every other day administration of rhTPO, then adjusted dose interval to maintain platelet count (30-100) ×109/L.@*Results@#A total of 91 eligible patients were enrolled. Fourteen patients discontinued the study due to noncompliance (12/14) and investigator decision (2/14) . Among 77 patients who completed the study, 38 patients with the administration of rhTPO at every other day or less could maintain PLT≥30×109/L for 12 weeks. The percentage of patients with a platelet response (PLT≥30×109/L) at 4th week, 8th week and 12th week of maintain therapy was 92.6% (63/68) , 82.7% (43/52) and 85.0% (34/40) , respectively. Median platelet counts remained in the range of (70-124) ×109/L. The overall incidence of rhTPO-related adverse events was 7.7%. All the adverse events were generally mild.@*Conclusion@#Extending the dose interval of rhTPO is feasible to maintain stable platelet count in the patients with ITP, but the optimal dose interval is uncertain and might vary with individuals.