Anti-tumor effects of phytosphingosine on leukemia cells by inducing cell apoptosis / 陆军军医大学学报

Objective To preliminarily investigate the anti-tumor effects of phytosphingosine(PHS)and the involvement of inducing apoptosis of leukemia cells.Methods Cellular model of leukemia was established in leukemia cell lines K562 and SUP-B15.CCK-8 assay and EdU assay were used to measure the viability and DNA synthesis of K562 and SUP-B15 cells.RNA-seq was carried out to verify the differentially expressed genes(DEGs)after PHS treatment.Gene Ontology(GO)enrichment and Kyoto Encyclopedia of Genes and Genomes(KEGG)enrichment analyses were applied to analyze the involved functions and signaling pathways.Comparative Toxicogenomics Database(CTD)and Discovery Studio software were employed to predict the underlying targets of PHS and molecular docking.Cell apoptosis was detected by flow cytometry,mitochondrial membrane potential was evaluated by JC-1 probe,and protein expression of key molecules was validated by Western blotting.Results PHS inhibited the proliferation of K562 and SUP-B15 cells in a time-and dose-dependent manner.The half-maximal inhibitory concentration(IC50)of K562 cells was 17.67 and 12.52 pmol/L for 24 and 48 h,respectively,and the IC50 value of SUP-B15 cells was 17.58 and 14.86 μmol/L for 24 and 48 h,respectively.PHS treatment at a dose of 20 μmol/L for 48 h resulted in significant inhibition of DNA synthesis.GO enrichment analysis of the K562 cells showed that PHS might be involved in positive regulation of apoptotic process,plasma membrane and its integral components,and protein kinase binding and activity.Reverse predictive analysis showed that BCL-2 protein was the most likely target of PHS.PHS significantly increased the apoptotic rate of leukemia cells(P＜0.05)in a dose-dependent manner,reduced the mitochondrial membrane potential,and down-regulated BCL-2 level(P＜0.05)and up-regulated the levels of Cleaved caspase-3 and Cleaved caspase-9(P＜0.05).Conclusion PHS may inhibit the proliferation of leukemia cells by inducing mitochondria-dependent apoptosis,possibly through PHS and BCL-2 interaction.

Prevalence of Echinococcus infections in small rodents in Yushu City, Qinghai Province in 2023 / 中国血吸虫病防治杂志

Objective To investigate the prevalence of Echinococcus infections in small rodents around human residential areas in Yushu City, Qinghai Province in 2023, so as to provide insights into precision echinococcosis control. Methods One or two quadrats, each measuring 50 m × 50 m, were randomly assigned in Shanglaxiu Township and Longbao Township, Yushu City, Qinghai Province on June 2023, respectively, and 300 plate-type mouse traps, each measuring 12.0 cm × 6.5 cm, were assigned in each quadrat. Small rodents were captured during the period between 10 : 00 and 18 : 00 each day for 4 days. Then, all captured small rodents were identified and dissected, and liver specimens with suspected Echinococcus infections were subjected to pathological examinations. The Echinococcus cytochrome c oxidase 1 (cox1) gene was amplified using PCR assay, and the sequence of the amplified product was aligned to that was recorded in the GenBank to characterize the parasite species. In addition, a phylogenetic tree of Echinococcus was generated based on the cox1 gene sequence using the neighbor-joining method. Results A total of 236 small rodents were captured in Shanglaxiu and Longbao townships, Yushu City, including 65 Qinghai voles and 51 plateau pikas in Shanglaxiu Township, and 62 Qinghai voles and 58 plateau pikas in Longbao Township, and there was no significant difference in the constituent ratio of small rodents between the two townships (χ2 = 0.294, P > 0.05). Seven plateau pikas and 12 Qinghai voles were suspected to be infected with Echinococcus by dissection, and pathological examinations showed unclear structure of hepatic lobules and disordered hepatocyte arrangement in livers of small rodents suspected of Echinococcus infections. PCR assay identified E. shiquicus DNA in 7 Qinghai voles, which were all captured from Shanglaxiu Township. Phylogenetic analysis showed that the cox1 gene sequence of Echinococcus in small rodents was highly homologous to the E. shiquicus cox1 gene sequence reported previously. Conclusion Plateau pika and Qinghai vole were predominant small rodents around human residential areas in Yushu City, Qinghai Province in 2023, and E. shiquicus infection was detected in Qinghai voles.

Connexin 43-modified bone marrow stromal cells reverse the imatinib resistance of K562 cells via Ca 2+ -dependent gap junction intercellular communication / 中华医学杂志(英文版)

BACKGROUND@#Imatinib mesylate (IM) resistance is an emerging problem for chronic myeloid leukemia (CML). Previous studies found that connexin 43 (Cx43) deficiency in the hematopoietic microenvironment (HM) protects minimal residual disease (MRD), but the mechanism remains unknown.@*METHODS@#Immunohistochemistry assays were employed to compare the expression of Cx43 and hypoxia-inducible factor 1α (HIF-1α) in bone marrow (BM) biopsies of CML patients and healthy donors. A coculture system of K562 cells and several Cx43-modified bone marrow stromal cells (BMSCs) was established under IM treatment. Proliferation, cell cycle, apoptosis, and other indicators of K562 cells in different groups were detected to investigate the function and possible mechanism of Cx43. We assessed the Ca 2+ -related pathway by Western blotting. Tumor-bearing models were also established to validate the causal role of Cx43 in reversing IM resistance.@*RESULTS@#Low levels of Cx43 in BMs were observed in CML patients, and Cx43 expression was negatively correlated with HIF-1α. We also observed that K562 cells cocultured with BMSCs transfected with adenovirus-short hairpin RNA of Cx43 (BMSCs-shCx43) had a lower apoptosis rate and that their cell cycle was blocked in G0/G1 phase, while the result was the opposite in the Cx43-overexpression setting. Cx43 mediates gap junction intercellular communication (GJIC) through direct contact, and Ca 2+ is the key factor mediating the downstream apoptotic pathway. In animal experiments, mice bearing K562, and BMSCs-Cx43 had the smallest tumor volume and spleen, which was consistent with the in vitro experiments.@*CONCLUSIONS@#Cx43 deficiency exists in CML patients, promoting the generation of MRD and inducing drug resistance. Enhancing Cx43 expression and GJIC function in the HM may be a novel strategy to reverse drug resistance and promote IM efficacy.

Effectiveness of the central government-funded echinococcosis control programme in Tianzhu Tibetan Autonomous County, Gansu Province from 2007 to 2022 / 中国血吸虫病防治杂志

Objective To evaluate the effectiveness of the central government-funded echinococcosis control programme in Tianzhu Tibetan Autonomous County, Gansu Province from 2007 to 2022, so as to provide insights into echinococcosis control. Methods Administrative villages were sampled using a multi-stage cluster random sampling method from Tianzhu Tibetan Autonomous County, Gansu Province from 2007 to 2022, and all residents at ages of 12 years and older in the sampled villages were screened for echinococcosis, and schools were sampled using a cluster sampling method, and all children at ages of 12 years and older in the sampled schools were screened for echinococcosis. Domestic dogs were sampled using a systematic random sampling method, and one domestic dog stool sample was collected from each household. Stray dog stool samples were collected outside the villages, and Echinococcus coproantigens were detected using enzyme-linked immunosorbent assay in domestic and stray dogs. In addition, echinococcosis was screened in sheep and cattle in designated slaughterhouses in Tianzhu Tibetan Autonomous County. The trends in the prevalence of echinococcosis in humans and livestock and the positive rate of Echinococcus coproantigens in dogs were examined with the Cochran-Armitage trend test. In addition, individuals screened for echinococcosis were randomly sampled from 2007 to 2022 for survey on the awareness of echinococcosis control knowledge. Results A total of 290 356 person-times were screened for echinococcosis among residents at ages of 12 years and older in Tianzhu Tibetan Autonomous County, Gansu Province from 2007 to 2022, with 1 094 residents detected with cystic echinococcosis, and the detection of echinococcosis appeared a tendency towards a gradual decline over years (χ2 = 358.602, P < 0.001). A total of 32 931 person-times were screened for echinococcosis among children at ages of 12 years and older in Tianzhu Tibetan Autonomous County, Gansu Province from 2007 to 2022, with 296 children detected with echinococcosis, and the detection of echinococcosis appeared a tendency towards a gradual decline over years (χ2 = 267.673, P < 0.001). A total of 33 230 domestic dog stool samples were tested for Echinococcus coproantigens in Tianzhu Tibetan Autonomous County, Gansu Province from 2007 to 2022, with 1 777 Echinococcus coproantigens-positive samples tested, and the positive rate of Echinococcus coproantigens appeared a tendency towards a decline in domestic dogs over years (χ2 = 2 210.428, P < 0.001), while the positive rate of Echinococcus coproantigens showed a tendency towards a rise in domestic animals from 2016 to 2022 (χ2 = 37.745, P < 0.001). The positive rate of Echinococcus coproantigens remained relatively stable in stray dogs in Tianzhu Tibetan Autonomous County, Gansu Province from 2019 to 2022 (χ2 = 0.315, P = 0.575). A total of 10 973 sheep were screened for echinococcosis in Tianzhu Tibetan Autonomous County from 2007 to 2022, with 334 sheep detected with echinococcosis, and the detection of echinococcosis appeared a tendency towards a decline in sheep over years (χ2 = 53.579, P < 0.001); however, there was no significant change in the detection of echinococcosis during the period from 2015 through 2022 (χ2 = 1.520, P = 0.218). A total of 2 400 cattle were screened for echinococcosis in Tianzhu Tibetan Autonomous County from 2017 to 2022, with 231 cattle detected with echinococcosis, and the detection of echinococcosis showed a tendency towards a decline over years (χ2 = 5.579, P < 0.05). The awareness of echinococcosis control knowledge increased from 44.37% in 2007 to 94.00% in 2022 among residents at ages of 12 years and older and from 52.50% in 2007 to 92.50% in 2022 among children at ages of 12 years and older in Tianzhu Tibetan Autonomous County, respectively. Conclusions There has been a reduction in the detection of echinococcosis in humans and domestic animals and the positive rate of Echinococcus coproantigens in dogs and a rise in the awareness of the echinococcosis control knowledge following the implementation of the central government-funded echinococcosis control programme in Tianzhu Tibetan Autonomous County, Gansu Province; however, integrated echinococcosis control measures are still required for further control of the prevalence of echinococcosis.

Associations of morning urinary 1-bromopropane metabolite with peripheral blood parameters in a community-based population / 环境与职业医学

Background As an environmental pollutant, 1-bromopropane (1-BP) is ubiquitous in the living environment. However, its health effects on the general population are still unclear. Objective To assess the associations between urinary 1-BP metabolite and blood routine indices in a Chinese community population. Methods A total of 3512 community residents aged 18-80 years from the baseline of the Wuhan-Zhuhai cohort were included in our study. The demographic characteristics, disease history, and lifestyles of the participants were collected through questionnaires. Height, weight, blood pressure, and other anthropometrics were collected through physical examination. Blood routine indicators were tested using an automated hematology analyzer. Urinary 1-BP metabolite N-Acetyl-S-(n-propyl)-L-cysteine (BPMA) was measured by ultra-high-performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry. Generalized linear models and logistic regression models were used to assess the associations of urinary BPMA with blood routine indices and the risks of abnormal blood routine indices, respectively. Besides, stratified analysis and effect modification analysis were further conducted to investigate the effects of individual characteristics and lifestyles on the associations of urinary BPMA with blood routine indices. All models were adjusted for gender, age, and other potential confounders. Results The mean age of the study population (30.1% male) was (52.78±12.77) years. The median (P25, P75) level of urinary BPMA adjusted for urinary creatinine was 0.90 (0.50, 1.73) mg·mol−1. In the analysis with target indicator as continuous variable, each 1-unit increase in natural logarithm-transformed urinary BMPA level was associated with a 0.078×109 L−1, 0.031×109 L−1, 0.307%, 3.518 g·L−1, and 2.469×109 L−1 decrease in white blood cell, lymphocyte, lymphocyte percentage, mean corpuscular hemoglobin concentration, and platelet levels, respectively (all Ps<0.05); and with a 0.440%, 1.140 fL, 0.014 fL, and 0.020 increase in hematocrit, mean corpuscular volume, and natural logarithm-transformed levels of mean platelet volume and mean platelet volume/platelet, respectively (all Ps<0.05). The categorical analysis across quartiles of BPMA level showed that BPMA was inversely associated with lymphocyte percentage, mean corpuscular hemoglobin concentration, and platelet levels in a dose-dependent manner (all Ptrend<0.05), and positively related to hematocrit, mean corpuscular volume, mean platelet volume, and mean platelet volume/platelet levels in a dose-dependent manner (all Ptrend<0.05). Body mass index, smoking, and drinking modified the associations of urinary BPMA level with red blood cell, mean corpuscular hemoglobin concentration lymphocyte percentage, and hemoglobin (all Ps<0.05). In addition, urinary BPMA was associated with an increased risk of abnormal increase in mean corpuscular volume (OR=1.316, 95%CI: 1.171-1.478) and red blood cell volume distribution width (OR=1.255, 95%CI: 1.030-1.528), and abnormal decrease in mean corpuscular hemoglobin concentration (OR=1.200, 95%CI: 1.035-1.392). Conclusion Exposure to 1-BP of the general population is associated with decreased white blood cells and platelets, as well as abnormal change of blood cell morphology or function.

Adrenal Castleman disease: a case report / 中华泌尿外科杂志

Adrenal Castleman's disease is rare. One case of left adrenal Castleman's disease, who underwent retroperitoneal laparoscopic left adrenal gland and tumor resection. The postoperative pathological diagnosis was adrenal Castleman's disease (transparent vascular type), and no tumor recurrence was found after 2 years of follow-up.

Survival comparison of Siewert II adenocarcinoma of esophagogastric junction between transthoracic and transabdominal approaches:a joint data analysis of thoracic and gastrointestinal surgery / 中华胃肠外科杂志

OBJECTIVE@#To compare the long-term survival outcomes of Siewert II adenocarcinoma of esophagogastric junction (AEG) between transthoracic (TT) approach and transabdominal (TA) approach.@*METHODS@#The databases of Gastrointestinal Surgery Department and Thoracic Surgery Department in West China Hospital of Sichuan University from 2006 to 2014 were integrated. Patients of Siewert II AEG who underwent resection were retrospectively collected.@*INCLUSION CRITERIA@#(1) adenocarcinoma confirmed by gastroscopy and biopsy; (2) tumor involvement in the esophagogastric junction line; (3) tumor locating from lower 5 cm to upper 5 cm of the esophagogastric junction line, and tumor center locating from upper 1 cm to lower 2 cm of esophagogastric junction line; (4)resection performed at thoracic surgery department or gastrointestinal surgery department; (5) complete follow-up data. Patients at thoracic surgery department received trans-left thoracic, trans-right thoracic, or transabdominothoracic approach; underwent lower esophagus resection plus proximal subtotal gastrectomy; selected two-field or three-field lymph node dissection; underwent digestive tract reconstruction with esophagus-remnant stomach or esophagus-tubular remnant stomach anastomosis above or below aortic arch using hand-sewn or stapler instrument to perform anastomosis. Patients at gastrointestinal surgery department received transabdominal(transhiatal approach), or transabdominothoracic approach; underwent total gastrectomy or proximal subtotal gastrectomy; selected D1, D2 or D2 lymph node dissection; underwent digestive tract reconstruction with esophagus-single tube jejunum or esophagus-jejunal pouch Roux-en-Y anastomosis, or esophagus-remnant stomach or esophagus-tubular remnant stomach anastomosis; completed all the anastomoses with stapler instruments. The follow-up ended in January 2018. The TNM stage system of the 8th edition UICC was used for esophageal cancer staging; survival table method was applied to calculate 3-year overall survival rate and 95% cofidence interval(CI); log-rank test was used to perform survival analysis; Cox regression was applied to analyze risk factors and calculate hazard ratio (HR) and 95%CI.@*RESULTS@#A total of 443 cases of Siewert II AEG were enrolled, including 89 cases in TT group (with 3 cases of transabdominothoracic approach) and 354 cases in TA group. Median follow-up time was 50.0 months (quartiles:26.4-70.2). The baseline data in TT and TA groups were comparable, except the length of esophageal invasion [for length <3 cm, TA group had 354 cases(100%), TT group had 44 cases (49.4%), χ²=199.23,P<0.001]. The number of harvested lymph node in thoracic surgery department and gastrointestinal surgery department were 12.0(quartiles:9.0-17.0) and 24.0(quartiles:18.0-32.5) respectively with significant difference (Z=11.29,P<0.001). The 3-year overall survival rate of TA and TT groups was 69.2%(95%CI:64.1%-73.7%) and 55.8% (95%CI:44.8%-65.4%) respectively, which was not significantly different by log-rank test (P=0.059). However, the stage III subgroup analysis showed that the survival of TA group was better [the 3-year overall survival in TA group and TT group was 78.1%(95%CI:70.5-84.0) and 46.3%(95%CI:31.0-60.3) resepectively(P=0.001)]. Multivariate Cox regression analysis revealed that the TT group had poor survival outcome (HR=2.45,95%CI:1.30-4.64, P=0.006).@*CONCLUSION@#The overall survival outcomes in the TA group are better, especially in stage III patients, which may be associated with the higher metastatic rate of abdominal lymph node and the more complete lymphadenectomy via TA approach.

The clinical observation of serum specific biomarkers in patients with chronic graft-versus-host disease / 中华血液学杂志

Objective@#Chronic graft-versus-host disease (cGVHD) is a major long-term complication after allogeneic hematopoietic stem cell transplantation (allo-HSCT) . It is important to study the changes of serum biomarkers expression in patients for early diagnosis and treatment.@*Methods@#The expression levels of five serum protein markers (IL-1b, IL-16, CXCL9, CCL19, CCL17) in patients with or without cGVHD after allo-HSCT were detected by liquid suspension microarray.@*Results@#Compared with the control group without cGVHD, the expression levels of CXCL9 and CCL17 in serum of patients with cGVHD were significantly increased (P<0.05) . CCL17 was correlated with the severity of cGVHD (P<0.001) . CXCL9 was significantly increased in the serum of patients with skin lesion (P<0.01) , and CCL17 was significantly expressed in cGVHD patients with liver as the target organ (P<0.01) .@*Conclusion@#The combination of CXCL9 and CCL17 can be used as serum biomarkers of cGVHD, which has certain reference value in assisting the diagnosis and evaluation of cGVHD severity.

Nurse Professionalism Education and Analysis of Its Research Status / 中国医学伦理学

By elaborating the concept and connotation of nurse professionalism, this paper introduced the do-mestic and foreign nurse professionalism assessment tools, and analyzed the existing research to obtain related fac-tors that influenced nurse professionalism: professional identity, organizational culture, interpersonal relationship in nursing work, turnover intention, nursing education, and paying attention to the cultivation of nurse professionalism and creating health care occupation environment, to provide the reference for improving the nurse professionalism and developing the theory of China nurse professionalism, thus to make clinical nurses receive more opportunities to improve their professionalism and professional practiceability.

Effect of oxycodone on microglial activation in brain tissues of rats / 中华麻醉学杂志

Objective To evaluate the effect of oxycodone on microglial activation in brain tissues of rats. Methods Primarily cultured microglial cells of Sprague?Dawley rats were seeded in 24?well plates (1 ml∕well)at a density of 1×105cells∕ml and divided into 5 groups(n=40 each)using a random num?ber table: control group(group C), lipopolysaccharide(LPS)group(group L)and low, medium and high concentrations of oxycodone groups(O25, O50, O100groups). The cells were cultured in serum?free medium for 24 h in group C. LPS was added at the final concentration of 1 μg∕ml in L, O25, O50and O100 groups, and in addition oxycodone was added at the final concentration of 25, 50 and 100 ng∕ml at 24 h of incubation with LPS in O25, O50and O100groups, respectively. Cells were collected at 1 h of incubation or culture for determination of the expression of tumor necrosis factor?α(TNF?α), interleukin?1β(IL?1β), IL?10 and transforming growth factor?1β(TGF?1β)mRNA(by real?time polymerase chain reaction)and expression of TGF?1β and phosphorylated Smad2(p?Smad2)(using Western blot). The concentrations of TNF?α, IL?1β and IL?10 in the supernatant were detected by enzyme?linked immunosorbent assay. Results Compared with group C, the expression of TGF?β1, IL?1β and TNF?α mRNA, TGF?β1 and p?Smad2 was significantly up?regulated, and the concentrations of IL?1β, IL?10 and TNF?α in the supernatant were increased in group L(P<0.01). Compared with group L, the expression of TGF?β1, IL?1β and TNF?α mRNA, TGF?β1 and p?Smad2 was significantly down?regulated in O50and O100groups, the expression of IL?10 mRNA was significantly up?regulated, and the concentrations of IL?1β and TNF?α in the supernatant were decreased in group O100(P<0.05), and no significant change was found in the parameters mentioned above in group O25(P>0.05). Conclusion Oxycodone can inhibit microglial activation in brain tissues of rats.

Endoscopic follow-up of gastric low-grade intraepithelial neoplasia and influencing factors for outcome / 中华消化内镜杂志

Objective To study the influencing factors for outcomes of gastric low-grade intraepithelial neoplasia ( LGIN) for better LGIN treatment regimen. Methods Using magnifying endoscopy combined with narrow-band imaging ( ME-NBI ) follow-up strategy, the endoscopic features of 47 cases of LGIN in Fujian Provincial Hospital, including location, size, surface situation, demarcation line, microvascular pattern and microsurface pattern, were prospectively observed, then the factors influencing the outcome were analyzed. Results Among the 47 cases of LGIN, there were 35 cases in stable condition, whose results of biopsy and ME-NBI had no changes (stable LGIN), and the mean follow-up time was 20. 7±6. 9 months. The remaining 12 patients had progressive dysplasia (progressive LGIN), including 4 cases of high-grade intraepithelial neoplasia, and 8 cases of moderate dysplasia. The mean follow-up time was 16. 3 ± 11. 8 months. There were no significant differences between the two groups in gender (P=0. 33), mean age (P=0. 13), lesion distribution (P=0. 70), and lesion morphology (P=0. 97). The lesion size was less than 20 mm in the stable group ( 71. 4％, 25/35) , and over 20 mm in the progressive group ( 66. 7％, 8/12) , and the difference was statistically significant ( P=0. 02) . The proportion of the lesion surface heterogeneity in the progressive group was significantly higher than that in the stable group[75. 0％ (9/12) VS 34. 3％ (12/35),P= 0. 01 ] . The proportion of positive manifestations under ME-NBI in the progressive group was also significantly higher than that in the stable group [ 83. 3％ ( 10/12 ) VS 8. 6％ ( 3/35 ) , P = 0. 00 ] . Conclusion The size of lesions over 20 mm, the uneven surface and positive ME-NBI are the important factors influencing the outcome of LGIN, which are of significance for the diagnosis and treatment of LGIN.

Epidemiological characteristics of canine Echinococcus infection in Qinghai⁃ Tibet Plateau of China / 中国血吸虫病防治杂志

@#The Qinghai⁃Tibet Plateau is known as one of the highest endemic areas of echinococcosis However，the dog infection rates of Echinococcus granulosus in the plateau regions were similar to other non⁃Tibetan areas with the high endemic，and most of the rates were below 40%. The infected dogs with E. multilocularis were ubiquitous in Ganzi Prefecture of Sichuan Province and Qinghai Province where many survey data were done and available，which was much different from those in non⁃Ti⁃betan areas where the geographical distribution of dogs infected with E. multilocularis was sporadic. The total infection rates of Echinococcus in dogs kept stable from 1983 to 2009 in Ganzi Prefecture of Sichuan Province and did not show much variation from 2000 to 2014 in Qinghai Province as well. Since 2006，the national comprehensive prevention and control strategy and mea⁃ sures against echinococcosis have been launched in China，and significant progress has been made. In the endemic Tibetan area of Sichuan，the general Echinococcus infection rates in dogs were 28.10%，15.87%，19.22%，3.28% and 1.11% from 2009 to 2013，respectively，and the Echinococcus coproantigen⁃positive rate in Gannan Prefecture of Gansu Province and parts of Qing⁃ hai Province also decreased. This paper reviews the literature on the characteristics of dog infections in the Qinghai⁃Tibetan Plateau，so as to provide useful information to support echinococcosis control and prevention there.

Experience of endoscopic diagnosis and treatment for gastrointestinal neuroendocriue tumor / 中国内镜杂志

Objective To study the characteristics of endoscopic diagnosis and treatment for gastrointestinal neuroendocriue tumor (GI-NETs).Methods We retrospectively collected the clinical data of 84 patients with endoscopic confirmed GI-NETs from January 2012 to November 2014, including white light, endoscopic ultrasonography, histopathology and post-treatment condition.Results Endoscopic diagnosis for NET were 84 cases, but ifnally conifrmed by pathology were 72 cases, the misdiagnosis rate was 14.3%. Of the 12 misdiagnosed cases, 5 cases were chronic inlfammation, ectopic pancreas in 2 cases, and 5 cases of hyperplasia of Brunner's glands, colorectal hyperplastic polyps, colorectal venous hemangioma, colorectal leiomyoma, metastatic squamous carcinoma respectively. Of 8 cases with EUS, all lesions derived from the submucosal layer, and 6 cases of low echo, and 2 cases of high echo (Brunner's glands) and mixed echo (venous hemangioma) respectively.Conclusions GI-NETs,which possess certain characteristics under endoscopy, may be similar with other digestive diseases, while it can increase the diagnosis accuracy by more careful observation and necessary biopsy.

Prevalence of Cystic Echinococcosis in Slaughtered Sheep as an Indicator to Assess Control Progress in Emin County, Xinjiang, China

Hydatid disease imposing serious threat on human health and great loss in livenotstock pastoralism remains a major public health problem in western China. To assess and monitor the effect of control program on transmission dynamics, we used the prevalence of cystic echinococcosis in slaughtered sheep at slaughterhouse as an indicator during the period of 2007 to 2013 in Emin County, Xinjiang Uygur Autonomous Region, China. The results showed a significant decline trend of prevalence in all age groups during the 7 years when the control program was implemented; particularly, the rate was reduced by 72% after first 3 years. Among the sheep slaughtered, the age distribution evidenced that the prevalence increased significantly as the sheep grew older. The baseline data indicated that the rate was 4.5% at the age or =4 years. Earlier response to the intervention pressure was seen in the sheep at the younger age. Significant decline started from 2008 at the age or =4. This study demonstrated that the prevalence of cystic echinococcosis in slaughtered sheep may be used as an indicator to assess and monitor the transmission status during and after control program providing information for betterment of performance to sustain control strength.

The function of protein kinase C in myocardial fibrosis / 药学学报

Myocardial fibrosis is the common results of the development of a variety of heart diseases which leads to extracellular matrix protein metabolic disorders and causes cardiac remodeling owing to cardiac fibroblasts proliferation, eventually results in malignant arrhythmia, heart failure, and even the occurrence of sudden cardiac death. Effective inhibition of myocardial remodeling could prevent the occurrence of sudden death. To know the protein kinase C (PKC) effective mechanism of regulation on myocardial fibrosis, a new therapeutic target for reversing myocardial remodeling might be provided.

The Anti-fatigue Effect of Complex Bear Gall Agent in Mice / 中国基层医药

Objective To investigate the anti-fatigue effect of complex bear gall agent in mice.Methods Different dose of complex bear gall agent(4.4ml/kg、6.6ml/kg、13.2rml/kg)were given to mice by intragastric administration. The time of climbing-pole and loaded-swimming, hepatic glycogen content, serum urea nitrogen,lactic acid and lactate dehydrogenase of mice after swim were observed. Results The experiments indicated that complex bear gall agent could greatly increase the time of loaded-swimming and climbing Pole,increase the hepatic glycogen content and serum lactate dehydrogenase activity ,decrease serum urea nitrogen and blood lactic acid content in mice. Conclusion Complex bear gall agent had a significant anti-fatigue effect.

Protective effect of Tribulus terrestris saponin monomer B on cadiocytes impaired by hypoxia-reoxygenation / 中国药理学通报

Aim To observe the protection effect of Tribulus terrestris saponin monomer B (TTSMB) on cadiocytes impaired by hypoxia-reoxygenation (H/R).Methods Cadiocytes of neonate rat were cultivated for 72 hours and divided into normal control group, H/R group,GSTT 100 mg·L~(-1) group and TTSMB 10,1,0.1 nmol·L~(-1) group.Morphocytology change of cadiocytes was observed after the treatment.Cadiocyte survival rate was detected with MTT colorimetric method.Levels of creatine kinase (CK), lactate dehydrogenase (LDH), aspartate aminotransferase (AST), malondialdehyde (MDA), and activity of superoxide dismutase (SOD) were determined. Apoptosis rate was detected with flow cytometry.Expression of caspase-3 was examined with western blot.Results Compared with the control group, the survival cell number in H/R group decreased obviously, content of CK,LDH, AST, MAD increased, and activity of SOD decreased (P<0.01).Compared with the model group, the survival cell population increased in TTSMB 10,1,0.1 nmol·L~(-1) group (P<0.05 and P<0.01).Contents of CK, LDH, AST, MAD decreased, whereas the activity of SOD increased (P<0.05 and P<0.01).Apoptosis rate and expression of caspase-3 also reduced in TTSMB 10,1,0.1 nmol·L~(-1) group.Conclusion TTSMB has significant cadiocytes protective effect against H/R and inhibits cadiocyte apoptosis,and the mechanism depends on the effect against oxygen free radical.

Effect of gross saponins of Tribulus terrestris on cardiocytes impaired by adriamycin / 药学学报

This study is to observe the protection of gross saponins of Tribulus terrestris (GSTT) on cardiocytes impaired by adriamycin (ADR) and approach its mechanism of action. Cardiocytes of neonate rat were cultivated for 72 hours and divided into normal control group, model (ADR 2 mg x L(-1)) group, and GSTT (100, 30, and 10 mg x L(-1)) groups. MTT colorimetric method was deployed to detect cardiocyte survival rate, activities of CK, LDH, AST, SOD, MDA and NO were detected, and apoptosis was detected with flow cytometry. Effect of GSTT on caspase-3 was detected with Western blotting. Compared with control group, contents of CK, LDH, AST, MDA and NO were increased, and activity of SOD was reduced (P < 0.05, P < 0.01, P < 0.001) by ADR. Numbers of survival cells were increased (P < 0.05, P < 0.001), contents of CK, LDH, AST, MDA and NO were decreased, and activity of SOD was increased (P < 0.05, P < 0.01, P < 0.001) by GSTT (100 and 30 mg x L(-1)). Apoptosis of cardiocytes and concentration of caspase-3 can be reduced by GSTT (100 and 30 mg x L(-1)). GSTT can protect cardiocytes impaired by ADR, which are possible involved with its effect of resisting oxygen free radical.

Effect of gross saponins of Tribulus terrestris on cardiocytes impaired by adriamycin / 药学学报

This study is to observe the protection of gross saponins of Tribulus terrestris (GSTT) on cardiocytes impaired by adriamycin (ADR) and approach its mechanism of action. Cardiocytes of neonate rat were cultivated for 72 hours and divided into normal control group, model (ADR 2 mg?L-1) group, and GSTT (100, 30, and 10 mg?L-1) groups. MTT colorimetric method was deployed to detect cardiocyte survival rate, activities of CK, LDH, AST, SOD, MDA and NO were detected, and apoptosis was detected with flow cytometry. Effect of GSTT on caspase-3 was detected with Western blotting. Compared with control group, contents of CK, LDH, AST, MDA and NO were increased, and activity of SOD was reduced (P

Endoscopic ultrasonography-guided chemotherapeutic seeds implantation for progressive gastric cancer / 中华消化内镜杂志

Objective To evaluate the efficacy of endoscopic ultrasonography(EUS)guided implantation of 5-FU seeds for progressive gastric cancer.Methods A total of 23 patients with progressive gastric cancer and outflow obstruction were enrolled into the study.During the endoscopy procedure, 45-60 5-FU seeds were implanted into the tumors with guidance of EUS, with an average dose of 100 mg.Volumes of tumor were examined with 3D-EUS before and after the treatment.Results A total of 33 procedures of 5-FU implantation were performed.By measurements of 3D-EUS, the numbers of patients with complete respons, partial response, no change, progressive disease were 1, 15, 6 and 1, respectively.In terms of outflow obstruction improvement, significant effect, obvious effect and average effect were achieved in 6, 7 and 9 patients, respectively, with an overall response rate at 91.4%.Conclusion EUS-guided 5-FU seed implantation in progressive gastric cancer is safe,reliable and effective with few complications.3D-EUS may be a new method to evaluate curative effect.