BACKGROUND About one-third of refractory irritable bowel syndrome(IBS)cases are caused by gastrointestinal(GI)infection/inflammation,known as post-infectious/postinflammatory IBS(PI-IBS).Although it is known that inte...BACKGROUND About one-third of refractory irritable bowel syndrome(IBS)cases are caused by gastrointestinal(GI)infection/inflammation,known as post-infectious/postinflammatory IBS(PI-IBS).Although it is known that intestinal microbiota and host NOD-like receptor family pyrin domain containing 6(NLRP6)inflammsome signaling are closely related to PI-IBS and moxibustion has a therapeutic effect on PI-IBS,whether moxibustion regulates the intestinal flora and host NLRP6 events in PI-IBS remains unclear.AIM To examine the regulatory effect of moxibustion on intestinal microbiota and host NLRP6 inflammatory signaling in PI-IBS.METHODS Sprague-Dawley rats were divided into a normal control group,a model control group,a mild moxibustion group,and a sham mild moxibustion group.PI-IBS rats in the mild moxibustion group were treated with moxibusiton at bilateral Tianshu(ST 25)and Zusanli(ST36)for 7 consecutive days for 10 min each time.The sham group rats were given the same treatment as the mild moxibustion group except the moxa stick was not ignited.Abdominal withdrawal reflex(AWR)score was measured to assess the visceral sensitivity,and colon histopathology and ultrastructure,colonic myeloperoxidase(MPO)activity,and serum C-reactive protein(CRP)level were measured to evaluate low-grade colonic inflammation in rats.The relative abundance of selected intestinal bacteria in rat feces was detected by 16S rDNA PCR and the NLRP6 inflammsome signaling in the colon was detected by immunofluorescence,qRTPCR,and Western blot.RESULTS The AWR score was significantly decreased and the low-grade intestinal inflammation reflected by serum CRP and colonic MPO levels was inhibited in the mild moxibustion group compared with the sham group.Mild moxibustion remarkably increased the relative DNA abundances of Lactobacillus,Bifidobacterium,and Faecalibacterium prausnitzii but decreased that of Escherichia coli in the gut of PI-IBS rats.Additionally,mild moxibustion induced mRNA and protein expression of intestine lectin 1 but inhibited the ex展开更多
AIM To investigate the effect and mechanism of moxibustion in rats with ulcerative colitis.METHODS A rat colitis model was established by administering 4% dextran sulphate sodium solution. Seventy male rats were rando...AIM To investigate the effect and mechanism of moxibustion in rats with ulcerative colitis.METHODS A rat colitis model was established by administering 4% dextran sulphate sodium solution. Seventy male rats were randomly divided into seven groups: Healthy controls(HC), ulcerative colitis model group(UC), UC with 7 d of moxibustion(UC-7), UC with 14 d of moxibustion(UC-14), UC with mesalazine gavage(UC-W), HC with 7 d of moxibustion(HC-7), HC with 14 d of moxibustion(HC-14). Moxibustion was applied to the bilateral Tianshu(ST25). Gut microbiome profiling was conducted by 16 S r RNA amplicon sequencing, and PCR and ELISA determined the expression of inflammatory cytokines in colon mucosa and serum, respectively. RESULTS Moxibustion treatment restored the colonic mucosa and decreased submucosal inflammatory cell infiltration in colitis rats. Rats treated with moxibustion and mesalazine had significantly lower levels of the dominant phyla Proteobacteria and the genera Saccharibacteria, Sphingomonas and Barnesiella than colitis rats, and they could restore the microbiome to levels similar to those observed in healthy rats. UC rats had reduced alpha diversity, which could be alleviated by moxibustion therapy, and UC-7 had a higher alpha diversity than UC-14. This finding suggests that short-term(7 d) but no longer term(14 d) moxibustion treatment may significantly affect the gut microbiome. The potential bacterial functions affected by moxibustion may be ascorbate and aldarate metabolism, and amino acid metabolism. Compared with HC group, the levels of the cytokines interleukin-12(IL-12)(P < 0.05) and IL-6, IL-17, IL-23, interferon-γ, lipopolysaccharide, Ig A, tumour necrosis factor-α and its receptors 1(TNFR1) and TNFR2(P < 0.01) were all increased, whereas anti-inflammatory cytokine IL-2 and IL-10(P < 0.01) and transforming growth factor-β(P < 0.05) were decreased in UC rats. These changes were reversed by moxibustion.CONCLUSION Our findings suggest that moxibustion exerts its therapeutic effect by repairing mucos展开更多
AIM:To observe the analgesic effects of moxibustion in rats with chronic visceral hyperalgesia and its influence on the concentration of dynorphin(Dyn) and endomorphin(EM) in spinal cord.METHODS:The rat model of chron...AIM:To observe the analgesic effects of moxibustion in rats with chronic visceral hyperalgesia and its influence on the concentration of dynorphin(Dyn) and endomorphin(EM) in spinal cord.METHODS:The rat model of chronic visceral hyperalgesia was established by colorectal distention(CRD).In moxibustion(MX) group,moxibustion was applied once daily for 7 d;in sham moxibustion(SM) group,moxibustion was given to the same acupoints but with the nonsmoldered end of the moxa stick.Model control(MC) group and normal control group were also studied.The scoring system of abdominal withdrawal reflex was used to evaluate visceral pain for behavioral assessment.Enzyme linked immunosorbent assay was performed to determine the concentrations of Dyn and EM in spinal cord.RESULTS:Moxibustion significantly decreased visceral pain to CRD in this rat model,and no significant difference was detected between the SM group and the MC group.In MX group,moxibustion also increased the concentrations of Dyn and EM in spinal cord,and no significant difference was found between the SM group and the MC group.CONCLUSION:Moxibustion therapy can significantly enhance the pain threshold of rats with chronic visceral hyperalgesia,and the effect may be closely related to the increased concentration of Dyn and EM in spinal cord.展开更多
Background:Acute heart failure(AHF)is the most common disease in emergency departments(EDs).However,clinical data exploring the outcomes of patients presenting AHF in EDs are limited,especially the long-term outcomes....Background:Acute heart failure(AHF)is the most common disease in emergency departments(EDs).However,clinical data exploring the outcomes of patients presenting AHF in EDs are limited,especially the long-term outcomes.The purposes of this study were to describe the long-term outcomes of patients with AHF in the EDs and further analyze their prognostic factors.Methods:This prospective,multicenter,cohort study consecutively enrolled 3335 patients with AHF who were admitted to EDs of 14 hospitals from Beijing between January 1,2011 and September 23,2012.Kaplan-Meier and Cox regression analysis were adopted to evaluate 5-year outcomes and associated predictors.Results:The 5-year mortality and cardiovascular death rates were 55.4%and 49.6%,respectively.The median overall survival was 34 months.Independent predictors of 5-year mortality were patient age(hazard ratio[HR]:1.027,95 confidence interval[CI]:1.023-1.030),body mass index(BMI)(HR:0.971,95%CI:0.958-0.983),fatigue(HR:1.127,95%CI:1.009-1.258),ascites(HR:1.190,95%CI:1.057-1.340),hepatic jugular reflux(HR:1.339,95%CI:1.140-1.572),New York Heart Association(NYHA)class III to IV(HR:1.511,95%CI:1.291-1.769),heart rate(HR:1.003,95%CI:1.001-1.005),diastolic blood pressure(DBP)(HR:0.996,95%CI:0.993-0.999),blood urea nitrogen(BUN)(HR:1.014,95%CI:1.008-1.020),B-type natriuretic peptide(BNP)/N-terminal pro-B-type natriuretic peptide(NT-proBNP)level in the third(HR:1.426,95%CI:1.220-1.668)or fourth quartile(HR:1.437,95%CI:1.223-1.690),serum sodium(HR:0.980,95%CI:0.972-0.988),serum albumin(HR:0.981,95%CI:0.971-0.992),ischemic heart diseases(HR:1.195,95%CI:1.073-1.331),primary cardiomyopathy(HR:1.382,95%CI:1.183-1.614),diabetes(HR:1.118,95%CI:1.010-1.237),stroke(HR:1.252,95%CI:1.121-1.397),and the use of diuretics(HR:0.714,95%CI:0.626-0.814),(3-blockers(HR:0.673,95%CI:0.588-0.769),angiotensin-converting enzyme inhibitors(ACEIs)(HR:0.714,95%CI:0.604-0.845),angiotensin-II receptor blockers(ARBs)(HR:0.790,95%CI:0.646-0.965),spironolactone(HR:0.814,95%CI:0.663-0.999),calcium antago展开更多
近年来,随着摄影测量技术的发展以及无人机技术的普及,利用无人机摄影测量技术快速获取断裂带上高精度和高分辨率的地形地貌数据已成为1种重要的技术手段。文中首先介绍了1种简单高效且成本较低的新型数字摄影测量技术——SfM(Structure...近年来,随着摄影测量技术的发展以及无人机技术的普及,利用无人机摄影测量技术快速获取断裂带上高精度和高分辨率的地形地貌数据已成为1种重要的技术手段。文中首先介绍了1种简单高效且成本较低的新型数字摄影测量技术——SfM(Structure from Motion)方法的基本原理与作业流程,并选取青海茶卡盆地北缘断裂上1个典型的断错地貌点进行了无人机航空影像数据的采集和处理,最终生成了空间分辨率为6.1cm的高分辨率数字高程模型(DEM),点云密度高达273点/m^2,覆盖面积达0.463km^2。其次,利用地形剖面分析方法提取了平行于断层方向的地形剖面和坡度剖面等数据,结合基于DEM生成的等高线图和坡度图,对复杂的多级地貌面进行了精细的解译和定量研究。最后,基于地貌精细解译的结果,通过DEM提取的地形剖面数据确定了T_1—T_3阶地的垂直位移分别为(1.01±0.06)m、(1.37±0.13)m和(3.10±0.11)m,T_4和T_5阶地垂直位移的下限分别为(3.77±0.14)m和(5.46±0.26)m,获取了通过传统遥感影像难以直接获得的垂直位移信息,展示了无人机摄影测量技术在活动构造定量研究中广阔的应用前景。展开更多
AIM: To profile expression of microRNAs (miRNAs) in gastric cancer cells and investigate the effect of miR-374b-5p on gastric cancer cell invasion and metastasis.
Background The nocturnal nondipping and elevated morning blood pressure （BP） in patients with obstructive sleep apnea syndrome （OSAS） have not yet been well investigated in Chinese patients. This study aimed to de...Background The nocturnal nondipping and elevated morning blood pressure （BP） in patients with obstructive sleep apnea syndrome （OSAS） have not yet been well investigated in Chinese patients. This study aimed to describe the BP profile, and to elucidate the relationships between daytime BP and nighttime BP, and between evening BP and morning BP in patients with OSAS. Methods Twenty teaching hospital sleep centers in China were organized by the Chinese Medical Association to participate in this study and 2297 patients were recruited between January 2004 and April 2006. BP assessments were made at four time points （daytime, evening, nighttime and morning） and polysomnography （PSG） was performed and subjects were classified into four groups by their apnea-hypopnea index （AHI）： control, n=213 with AHI 〈5; mild, n=420 with AHI -〉5 and 〈15; moderate, n=460 with AHI -〉15 and 〈30; and severe, n=1204 with AHI -〉30. SPSS 11.5 software package was used for statistical analysis and figure drawing. Results All the average daytime, nighttime, evening and morning BPs were positively correlated with AHI and negatively correlated with nadir nocturnal oxygen saturation. The ratios of nighttime/daytime and morning/evening average BP were positively correlated with AHI. The ratio of nighttime/daytime systolic BP became a ＂reversed BP dipping＂ pattern until the classification reached severe, while the ratio of nighttime/daytime diastolic BP became reversed at moderate. Similarly, the ratio of morning/evening diastolic BP becomes reversed even at mild. Conclusions OSAS may result in higher BP levels at all four time points. The ratios of nighttime/daytime and morning/evening BP increase with increased AHI. The increasing of diastolic BP, which is inclined to rise more quickly, is not parallel with increasing systolic BP.展开更多
Complementary DNAs encoding two types of acetylcholinesterase （ACHE） were isolated from the silkworm, Bombyx mori. The type 1 （Bmacel） and type 2 （Bmace2） ORFs are 2052 and 1917 bp in length, respectively. Both ...Complementary DNAs encoding two types of acetylcholinesterase （ACHE） were isolated from the silkworm, Bombyx mori. The type 1 （Bmacel） and type 2 （Bmace2） ORFs are 2052 and 1917 bp in length, respectively. Both the complete ORFs of the Bmaces and C- terminal truncated forms were recombined into the Bacmid baculovirus vector under the control of the polyhedrin promoter and expressed in Trichoplusia ni （Tn-5B 1-4） cells. The resulting products exhibited ACHE activity and glycosylation of the expressed proteins. An inhibition assay indicated that the ace2-type enzyme was more sensitive than the acel-type enzyme to inhibition by eserine and paraoxon.展开更多
Objective:To evaluate the effects of a 48-week course of adefovir dipivoxil(ADV)plus Chinese medicine(CM)therapy,namely Tiaogan Jianpi Hexue(调肝健脾和血)and Tiaogan Jiedu Huashi(调肝解毒化湿)fomulae,in hepatitis B e ...Objective:To evaluate the effects of a 48-week course of adefovir dipivoxil(ADV)plus Chinese medicine(CM)therapy,namely Tiaogan Jianpi Hexue(调肝健脾和血)and Tiaogan Jiedu Huashi(调肝解毒化湿)fomulae,in hepatitis B e antigen(HBeAg)-positive Chinese patients.Methods:A total of 605 HBeAg-positive Chinese CHB patients were screened and 590 eligible participants were randomly assigned to 2 groups in 1:1 ratio including experimental group(EG,received ADV plus CM)and control group(CG,received ADV plus CM-placebo)for 48 weeks.The major study outcomes were the rates of HBeAg and HBV-DNA loss on week 12,24,36,48,respectively.Secondary endpoints including liver functions(enzymes and bilirubin readings)were evaluated every 4 weeks at the beginning of week 24,36,and 48.Routine blood,urine,and stool analyses in addition to electrocardiogram and abdominal B scan were monitored as safety evaluations.Adverse events(AEs)were documented.Results:The combination therapy demonstrated superior HBeAg loss at 48 weeks,without additional AEs.The full analysis population was 560 and 280 in each group.In the EG,population achieved HBeAg loss on week 12,24,36,and 48 were 25(8.90%),34(12.14%),52(18.57%),and 83(29.64%),respectively;the equivalent numbers in the CG were 20(7.14%),41(14.64%),54(19.29%),and 50(17.86%),respectively.There was a statistically significant difference between two groups on week 48(P<0.01).No additional AEs were found in EG.Subgroup analysis suggested different outcomes among treatment patterns.Conclusion:Combination of CM and ADV therapy demonstrated superior HBeAg clearance compared with ADV monotherapy.The finding indicates that this combination therapy may provide an improved therapeutic effect and safety profile(ChiCTR-TRC-11001263).展开更多
AIM To determine the association of circulating mi R-125 a/b expression with the risk and disease severity of Crohn's disease(CD), and with inflammatory cytokines.METHODS Plasma samples were collected from patient...AIM To determine the association of circulating mi R-125 a/b expression with the risk and disease severity of Crohn's disease(CD), and with inflammatory cytokines.METHODS Plasma samples were collected from patients with active CD(A-CD), or CD in remission(R-CD) and from healthy controls(HCs). The levels of the inflammatory cytokines interleukin-17(IL-17), tumour necrosis factor-α(TNF-α), and interferon-γ(IFN-γ) were measured by enzyme-linked immunosorbent assay. The expression of mi R-125 a/b was assessed by quantitative polymerase chain reaction(q PCR).RESULTS Twenty-nine A-CD patients, 37 R-CD patients, and 37 HCs were included in the study. Plasma mi R-125 a expression was decreased in A-CD patients comparedwith that in R-CD patients(P < 0.001) and HCs(P < 0.001). mi R-125 a expression levels enabled the differentiation of A-CD from R-CD patients [area under curve(AUC) = 0.854] and from HCs(AUC = 0.780), whereas mi R-125 b expression did not. mi R-125 a was negatively correlated with C-reaction protein(CRP)(P = 0.017), erythrocyte sedimentation rate(ESR)(P = 0.026), Crohn's disease activity index(CDAI)(P = 0.003), IL-17(P = 0.015), and TNF-α(P = 0.004) in A-CD patients. Furthermore, mi R-125 a was negatively associated with CRP(P = 0.038) and CDAI(P = 0.021) in R-CD patients. Regarding mi R-125 b, no association with CRP, CDAI, IL-17, TNF-α, or IFN-γ was found in A-CD or in R-CD patients. mi R-125 a levels gradually increased in A-CD patients who achieved clinical remission(P = 0.009) after 3-mo treatment, whereas they remained unchanged among patients who failed to achieve remission. No changes in mi R-125 b expression were detected in remission or non-remission patients after treatment. CONCLUSION Circulating mi R-125 a but not mi R-125 b is decreased in patients with active disease status and negatively correlates with disease severity and inflammatory cytokines in patients with CD.展开更多
This article investigated molybdenum recovery from oxygen pressure water leaching residue of Ni-Mo ore using alkaline leaching, followed by chemical treatment of leach liquor. Parameters affecting Mo leaching rate, su...This article investigated molybdenum recovery from oxygen pressure water leaching residue of Ni-Mo ore using alkaline leaching, followed by chemical treatment of leach liquor. Parameters affecting Mo leaching rate, such as sodium hydroxide concentration, reaction time, a liquid- to-solid ratio, and temperature for the preliminary alkaline leaching were experimentally determined. The results showed that more than 88 % of molybdenum was leached under the optimum conditions （2.5 ml.g-1 NaOH, 80 ℃, a liquid to solid ratio 3 ml.g-1, and reaction time 3 h）. After the purification of leach liquor, a CaMoO4 product of 99.2 % purity could be obtained by CaCla precipitation method. The whole Mo recovery reached about 82.7 %.展开更多
Background Epidemiologic studies have shown an independent and definite association between obstructive sleep apnea （OSA） and hypertension. This study aimed to define the association between daytime blood pressure a...Background Epidemiologic studies have shown an independent and definite association between obstructive sleep apnea （OSA） and hypertension. This study aimed to define the association between daytime blood pressure and severity of OSA in Chinese population in mainland of China. Methods Twenty university hospital sleep centers in mainland of China were invited by the Chinese Medical Association （CMA） to participate in this epidemiologic study and 2297 consecutive patients （aged 18-85 years; 1981 males and 316 females） referred to these twenty sleep centers for evaluation of OSA between January 2004 and April 2006 were prospectively enrolled. Nocturnal polysomnography was performed in each patient, and disease severity was assessed based on the apnea-hypopnea index （AHI）. These patients were classfied into four groups： non-apneic control （control, n=257） with AHI 〈5 episodes/hour; mild sleep apnea （mild, n=402） with AHI 〉5 and 〈15 episodes/hour; moderate sleep apnea （moderate, n=460） with AHI 〉15 and 〈30 episodes/hour and severe sleep apnea （severe, n=1178） with AHI 〉30 episodes/hour. Daytime blood pressure measurements were performed under standardized conditions in each patient at 10 a.m. in office on the day of referring to sleep centers for getting average value. All the patients were requested to quit medications related to blood pressure for three days before the day of assessing. Results Both daytime systolic blood pressure and diastolic blood pressure values were significantly related to AHI positively （r = 0.201 and 0.276, respectively; both P values 〈0.001） and to nadir nocturnal oxygen saturation negatively （r = -0.215 and -0.277, respectively; both P values 〈0.001）, which were the parameters of OSA severity. In two special designed mean plots, means of daytime systolic and diastolic blood pressure increased gradually with increasing AHI. Beyond AHI of 61-65, this increasing trend reached a plateau. Conclusions The results showed that OSA severity 展开更多
Background： The domestic prevalence of chronic hepatitis B （CHB） in China is 7.18% in 2006, imposing great societal healthcare burdens. Nucleot（s）ide analogues （NUCs） anti-hepatitis B virus （HBV） therapies ar...Background： The domestic prevalence of chronic hepatitis B （CHB） in China is 7.18% in 2006, imposing great societal healthcare burdens. Nucleot（s）ide analogues （NUCs） anti-hepatitis B virus （HBV） therapies are widely applied despite the relatively low rate of seroconversion and high risk of drug-resistant mutation. More effective treatments for CHB deserve further explorations. Combined therapy of NUCs plus Chinese herbal medicine （CHM） is widely accepted in China, which is recognized as a prospective alternative approach. The study was primarily designed to confirm the hypothesis that Tiaogan-Yipi Granule （调肝益脾颗粒, TGYP） or Tiaogan-Jianpi-Jiedu Granule （调肝健脾解毒颗粒, TGJPJD） plus entecavir tablet （ETV） was superior over ETV monotherapy in enhancing HBeAg loss rate. Methods： The study was a nationwide, large-scale, multi-center, double-blind, randomized, placebo-controlled trial with a designed duration of 108 weeks. A total of 16 hospitals and 596 eligible Chinese HBeAg positive CHB patients were enrolled from November 2012 to September 2013 and randomly allocated into 2 groups in 1：1 ratio via central randomization system： experimental group （EG） and control group （CG）. Subjects in EG received CM formulae （TGYP or TGJPJD, 50 g per dose, twice daily） plus ETV tablet （or ETV placebo） 0.5 mg per day in the first 24 weeks （stage 1）, and CHM granule plus ETV tablet （0.5 mg per day） from week 25 to 108 （stage 2）. Subjects in CG received CHM Granule placebo plus E＇IV tablet （0.5 mg per day） for 108 weeks throughout the trial. The assessments of primary outcomes （HBV serum markers and HBV-DNA） were conducted by a third-party College of American Pathologists （CAP） qualified laboratory. Adverse effects were observed in the hospitals of recruitment. Discussion： The study was designed to compare the curative effect of CM plus E＇IV and ETV monotherapy in respect of HBeAg loss, which is recognized by the European Asso展开更多
基金Supported by the National Natural Science Foundation of China,No.81503656the National Key Basic Research Program of China(973 Program),No.2015CB554501 and No.2009CB522900
文摘BACKGROUND About one-third of refractory irritable bowel syndrome(IBS)cases are caused by gastrointestinal(GI)infection/inflammation,known as post-infectious/postinflammatory IBS(PI-IBS).Although it is known that intestinal microbiota and host NOD-like receptor family pyrin domain containing 6(NLRP6)inflammsome signaling are closely related to PI-IBS and moxibustion has a therapeutic effect on PI-IBS,whether moxibustion regulates the intestinal flora and host NLRP6 events in PI-IBS remains unclear.AIM To examine the regulatory effect of moxibustion on intestinal microbiota and host NLRP6 inflammatory signaling in PI-IBS.METHODS Sprague-Dawley rats were divided into a normal control group,a model control group,a mild moxibustion group,and a sham mild moxibustion group.PI-IBS rats in the mild moxibustion group were treated with moxibusiton at bilateral Tianshu(ST 25)and Zusanli(ST36)for 7 consecutive days for 10 min each time.The sham group rats were given the same treatment as the mild moxibustion group except the moxa stick was not ignited.Abdominal withdrawal reflex(AWR)score was measured to assess the visceral sensitivity,and colon histopathology and ultrastructure,colonic myeloperoxidase(MPO)activity,and serum C-reactive protein(CRP)level were measured to evaluate low-grade colonic inflammation in rats.The relative abundance of selected intestinal bacteria in rat feces was detected by 16S rDNA PCR and the NLRP6 inflammsome signaling in the colon was detected by immunofluorescence,qRTPCR,and Western blot.RESULTS The AWR score was significantly decreased and the low-grade intestinal inflammation reflected by serum CRP and colonic MPO levels was inhibited in the mild moxibustion group compared with the sham group.Mild moxibustion remarkably increased the relative DNA abundances of Lactobacillus,Bifidobacterium,and Faecalibacterium prausnitzii but decreased that of Escherichia coli in the gut of PI-IBS rats.Additionally,mild moxibustion induced mRNA and protein expression of intestine lectin 1 but inhibited the ex
基金Supported by National Natural Science Foundation of China,No.81473758National Basic Research Programme of China(973 programme),No.2015CB554500
文摘AIM To investigate the effect and mechanism of moxibustion in rats with ulcerative colitis.METHODS A rat colitis model was established by administering 4% dextran sulphate sodium solution. Seventy male rats were randomly divided into seven groups: Healthy controls(HC), ulcerative colitis model group(UC), UC with 7 d of moxibustion(UC-7), UC with 14 d of moxibustion(UC-14), UC with mesalazine gavage(UC-W), HC with 7 d of moxibustion(HC-7), HC with 14 d of moxibustion(HC-14). Moxibustion was applied to the bilateral Tianshu(ST25). Gut microbiome profiling was conducted by 16 S r RNA amplicon sequencing, and PCR and ELISA determined the expression of inflammatory cytokines in colon mucosa and serum, respectively. RESULTS Moxibustion treatment restored the colonic mucosa and decreased submucosal inflammatory cell infiltration in colitis rats. Rats treated with moxibustion and mesalazine had significantly lower levels of the dominant phyla Proteobacteria and the genera Saccharibacteria, Sphingomonas and Barnesiella than colitis rats, and they could restore the microbiome to levels similar to those observed in healthy rats. UC rats had reduced alpha diversity, which could be alleviated by moxibustion therapy, and UC-7 had a higher alpha diversity than UC-14. This finding suggests that short-term(7 d) but no longer term(14 d) moxibustion treatment may significantly affect the gut microbiome. The potential bacterial functions affected by moxibustion may be ascorbate and aldarate metabolism, and amino acid metabolism. Compared with HC group, the levels of the cytokines interleukin-12(IL-12)(P < 0.05) and IL-6, IL-17, IL-23, interferon-γ, lipopolysaccharide, Ig A, tumour necrosis factor-α and its receptors 1(TNFR1) and TNFR2(P < 0.01) were all increased, whereas anti-inflammatory cytokine IL-2 and IL-10(P < 0.01) and transforming growth factor-β(P < 0.05) were decreased in UC rats. These changes were reversed by moxibustion.CONCLUSION Our findings suggest that moxibustion exerts its therapeutic effect by repairing mucos
基金Supported by The National Basic Research Program of China,973 Program,No 2009CB522900Scientific Research Grants of Shanghai Health Bureau,No 2009209Shanghai Leading Academic Discipline Project,No S30304
文摘AIM:To observe the analgesic effects of moxibustion in rats with chronic visceral hyperalgesia and its influence on the concentration of dynorphin(Dyn) and endomorphin(EM) in spinal cord.METHODS:The rat model of chronic visceral hyperalgesia was established by colorectal distention(CRD).In moxibustion(MX) group,moxibustion was applied once daily for 7 d;in sham moxibustion(SM) group,moxibustion was given to the same acupoints but with the nonsmoldered end of the moxa stick.Model control(MC) group and normal control group were also studied.The scoring system of abdominal withdrawal reflex was used to evaluate visceral pain for behavioral assessment.Enzyme linked immunosorbent assay was performed to determine the concentrations of Dyn and EM in spinal cord.RESULTS:Moxibustion significantly decreased visceral pain to CRD in this rat model,and no significant difference was detected between the SM group and the MC group.In MX group,moxibustion also increased the concentrations of Dyn and EM in spinal cord,and no significant difference was found between the SM group and the MC group.CONCLUSION:Moxibustion therapy can significantly enhance the pain threshold of rats with chronic visceral hyperalgesia,and the effect may be closely related to the increased concentration of Dyn and EM in spinal cord.
基金Supported by Shanghai Municipal Health Bureau,No.20124028The Ministry of Education Program for New Century Excellent Talents,No.NCET-13-0907+1 种基金Shanghai Municipal Science and Technology Commission,No.13ZR1439400Shanghai Top Clinical Medical Center of Acupuncture,Moxibustion and Tuina
文摘AIM: To evaluate the clinical efficacy and safety of acupuncture and moxibustion for the treatment of active Crohn’s disease (CD).
基金grants from the Capital Health Development Research Fund(No.2009-SHF04)Beijing Municipal Commission of Health and Family,Beijing,China.
文摘Background:Acute heart failure(AHF)is the most common disease in emergency departments(EDs).However,clinical data exploring the outcomes of patients presenting AHF in EDs are limited,especially the long-term outcomes.The purposes of this study were to describe the long-term outcomes of patients with AHF in the EDs and further analyze their prognostic factors.Methods:This prospective,multicenter,cohort study consecutively enrolled 3335 patients with AHF who were admitted to EDs of 14 hospitals from Beijing between January 1,2011 and September 23,2012.Kaplan-Meier and Cox regression analysis were adopted to evaluate 5-year outcomes and associated predictors.Results:The 5-year mortality and cardiovascular death rates were 55.4%and 49.6%,respectively.The median overall survival was 34 months.Independent predictors of 5-year mortality were patient age(hazard ratio[HR]:1.027,95 confidence interval[CI]:1.023-1.030),body mass index(BMI)(HR:0.971,95%CI:0.958-0.983),fatigue(HR:1.127,95%CI:1.009-1.258),ascites(HR:1.190,95%CI:1.057-1.340),hepatic jugular reflux(HR:1.339,95%CI:1.140-1.572),New York Heart Association(NYHA)class III to IV(HR:1.511,95%CI:1.291-1.769),heart rate(HR:1.003,95%CI:1.001-1.005),diastolic blood pressure(DBP)(HR:0.996,95%CI:0.993-0.999),blood urea nitrogen(BUN)(HR:1.014,95%CI:1.008-1.020),B-type natriuretic peptide(BNP)/N-terminal pro-B-type natriuretic peptide(NT-proBNP)level in the third(HR:1.426,95%CI:1.220-1.668)or fourth quartile(HR:1.437,95%CI:1.223-1.690),serum sodium(HR:0.980,95%CI:0.972-0.988),serum albumin(HR:0.981,95%CI:0.971-0.992),ischemic heart diseases(HR:1.195,95%CI:1.073-1.331),primary cardiomyopathy(HR:1.382,95%CI:1.183-1.614),diabetes(HR:1.118,95%CI:1.010-1.237),stroke(HR:1.252,95%CI:1.121-1.397),and the use of diuretics(HR:0.714,95%CI:0.626-0.814),(3-blockers(HR:0.673,95%CI:0.588-0.769),angiotensin-converting enzyme inhibitors(ACEIs)(HR:0.714,95%CI:0.604-0.845),angiotensin-II receptor blockers(ARBs)(HR:0.790,95%CI:0.646-0.965),spironolactone(HR:0.814,95%CI:0.663-0.999),calcium antago
文摘近年来,随着摄影测量技术的发展以及无人机技术的普及,利用无人机摄影测量技术快速获取断裂带上高精度和高分辨率的地形地貌数据已成为1种重要的技术手段。文中首先介绍了1种简单高效且成本较低的新型数字摄影测量技术——SfM(Structure from Motion)方法的基本原理与作业流程,并选取青海茶卡盆地北缘断裂上1个典型的断错地貌点进行了无人机航空影像数据的采集和处理,最终生成了空间分辨率为6.1cm的高分辨率数字高程模型(DEM),点云密度高达273点/m^2,覆盖面积达0.463km^2。其次,利用地形剖面分析方法提取了平行于断层方向的地形剖面和坡度剖面等数据,结合基于DEM生成的等高线图和坡度图,对复杂的多级地貌面进行了精细的解译和定量研究。最后,基于地貌精细解译的结果,通过DEM提取的地形剖面数据确定了T_1—T_3阶地的垂直位移分别为(1.01±0.06)m、(1.37±0.13)m和(3.10±0.11)m,T_4和T_5阶地垂直位移的下限分别为(3.77±0.14)m和(5.46±0.26)m,获取了通过传统遥感影像难以直接获得的垂直位移信息,展示了无人机摄影测量技术在活动构造定量研究中广阔的应用前景。
基金Supported by National Natural Science Foundation of China,No.81071965
文摘AIM: To profile expression of microRNAs (miRNAs) in gastric cancer cells and investigate the effect of miR-374b-5p on gastric cancer cell invasion and metastasis.
基金This study was supported by the grants from the National Natural Science Foundation of China （No. 30800507, No. 30770934）. All the coauthors from different centers in the name list have made equal contributions to this article. There is no ordering difference. None of the authors has a financial relationship with a commercial entity that has an interest in the subject of this manuscript.
文摘Background The nocturnal nondipping and elevated morning blood pressure （BP） in patients with obstructive sleep apnea syndrome （OSAS） have not yet been well investigated in Chinese patients. This study aimed to describe the BP profile, and to elucidate the relationships between daytime BP and nighttime BP, and between evening BP and morning BP in patients with OSAS. Methods Twenty teaching hospital sleep centers in China were organized by the Chinese Medical Association to participate in this study and 2297 patients were recruited between January 2004 and April 2006. BP assessments were made at four time points （daytime, evening, nighttime and morning） and polysomnography （PSG） was performed and subjects were classified into four groups by their apnea-hypopnea index （AHI）： control, n=213 with AHI 〈5; mild, n=420 with AHI -〉5 and 〈15; moderate, n=460 with AHI -〉15 and 〈30; and severe, n=1204 with AHI -〉30. SPSS 11.5 software package was used for statistical analysis and figure drawing. Results All the average daytime, nighttime, evening and morning BPs were positively correlated with AHI and negatively correlated with nadir nocturnal oxygen saturation. The ratios of nighttime/daytime and morning/evening average BP were positively correlated with AHI. The ratio of nighttime/daytime systolic BP became a ＂reversed BP dipping＂ pattern until the classification reached severe, while the ratio of nighttime/daytime diastolic BP became reversed at moderate. Similarly, the ratio of morning/evening diastolic BP becomes reversed even at mild. Conclusions OSAS may result in higher BP levels at all four time points. The ratios of nighttime/daytime and morning/evening BP increase with increased AHI. The increasing of diastolic BP, which is inclined to rise more quickly, is not parallel with increasing systolic BP.
基金We are grateful to Professor D. Fournier at Groupe de Biotechnologie des Proteines, IPBS-CNRS, France for his helpful comments and suggestions on this manuscript. This project was supported by the National Program of High-tech Research and Development （863 High-Tech Program, No. 2006AA10A 119）, the National Natural Science Foundation of China （No. 30770280） and the National Basic Research Program of China （2003CB 114403）.
文摘Complementary DNAs encoding two types of acetylcholinesterase （ACHE） were isolated from the silkworm, Bombyx mori. The type 1 （Bmacel） and type 2 （Bmace2） ORFs are 2052 and 1917 bp in length, respectively. Both the complete ORFs of the Bmaces and C- terminal truncated forms were recombined into the Bacmid baculovirus vector under the control of the polyhedrin promoter and expressed in Trichoplusia ni （Tn-5B 1-4） cells. The resulting products exhibited ACHE activity and glycosylation of the expressed proteins. An inhibition assay indicated that the ace2-type enzyme was more sensitive than the acel-type enzyme to inhibition by eserine and paraoxon.
基金Supported by the China National Science and Technology Major Projects,11th 5-year Project(No.2008ZX10005-006)。
文摘Objective:To evaluate the effects of a 48-week course of adefovir dipivoxil(ADV)plus Chinese medicine(CM)therapy,namely Tiaogan Jianpi Hexue(调肝健脾和血)and Tiaogan Jiedu Huashi(调肝解毒化湿)fomulae,in hepatitis B e antigen(HBeAg)-positive Chinese patients.Methods:A total of 605 HBeAg-positive Chinese CHB patients were screened and 590 eligible participants were randomly assigned to 2 groups in 1:1 ratio including experimental group(EG,received ADV plus CM)and control group(CG,received ADV plus CM-placebo)for 48 weeks.The major study outcomes were the rates of HBeAg and HBV-DNA loss on week 12,24,36,48,respectively.Secondary endpoints including liver functions(enzymes and bilirubin readings)were evaluated every 4 weeks at the beginning of week 24,36,and 48.Routine blood,urine,and stool analyses in addition to electrocardiogram and abdominal B scan were monitored as safety evaluations.Adverse events(AEs)were documented.Results:The combination therapy demonstrated superior HBeAg loss at 48 weeks,without additional AEs.The full analysis population was 560 and 280 in each group.In the EG,population achieved HBeAg loss on week 12,24,36,and 48 were 25(8.90%),34(12.14%),52(18.57%),and 83(29.64%),respectively;the equivalent numbers in the CG were 20(7.14%),41(14.64%),54(19.29%),and 50(17.86%),respectively.There was a statistically significant difference between two groups on week 48(P<0.01).No additional AEs were found in EG.Subgroup analysis suggested different outcomes among treatment patterns.Conclusion:Combination of CM and ADV therapy demonstrated superior HBeAg clearance compared with ADV monotherapy.The finding indicates that this combination therapy may provide an improved therapeutic effect and safety profile(ChiCTR-TRC-11001263).
文摘AIM To determine the association of circulating mi R-125 a/b expression with the risk and disease severity of Crohn's disease(CD), and with inflammatory cytokines.METHODS Plasma samples were collected from patients with active CD(A-CD), or CD in remission(R-CD) and from healthy controls(HCs). The levels of the inflammatory cytokines interleukin-17(IL-17), tumour necrosis factor-α(TNF-α), and interferon-γ(IFN-γ) were measured by enzyme-linked immunosorbent assay. The expression of mi R-125 a/b was assessed by quantitative polymerase chain reaction(q PCR).RESULTS Twenty-nine A-CD patients, 37 R-CD patients, and 37 HCs were included in the study. Plasma mi R-125 a expression was decreased in A-CD patients comparedwith that in R-CD patients(P < 0.001) and HCs(P < 0.001). mi R-125 a expression levels enabled the differentiation of A-CD from R-CD patients [area under curve(AUC) = 0.854] and from HCs(AUC = 0.780), whereas mi R-125 b expression did not. mi R-125 a was negatively correlated with C-reaction protein(CRP)(P = 0.017), erythrocyte sedimentation rate(ESR)(P = 0.026), Crohn's disease activity index(CDAI)(P = 0.003), IL-17(P = 0.015), and TNF-α(P = 0.004) in A-CD patients. Furthermore, mi R-125 a was negatively associated with CRP(P = 0.038) and CDAI(P = 0.021) in R-CD patients. Regarding mi R-125 b, no association with CRP, CDAI, IL-17, TNF-α, or IFN-γ was found in A-CD or in R-CD patients. mi R-125 a levels gradually increased in A-CD patients who achieved clinical remission(P = 0.009) after 3-mo treatment, whereas they remained unchanged among patients who failed to achieve remission. No changes in mi R-125 b expression were detected in remission or non-remission patients after treatment. CONCLUSION Circulating mi R-125 a but not mi R-125 b is decreased in patients with active disease status and negatively correlates with disease severity and inflammatory cytokines in patients with CD.
基金supported by the National High Technology Research and Development Program of China(No.2009AA06Z106)Yunnan Provincial Science and Technology Department of China(No.2011GA004)
文摘This article investigated molybdenum recovery from oxygen pressure water leaching residue of Ni-Mo ore using alkaline leaching, followed by chemical treatment of leach liquor. Parameters affecting Mo leaching rate, such as sodium hydroxide concentration, reaction time, a liquid- to-solid ratio, and temperature for the preliminary alkaline leaching were experimentally determined. The results showed that more than 88 % of molybdenum was leached under the optimum conditions （2.5 ml.g-1 NaOH, 80 ℃, a liquid to solid ratio 3 ml.g-1, and reaction time 3 h）. After the purification of leach liquor, a CaMoO4 product of 99.2 % purity could be obtained by CaCla precipitation method. The whole Mo recovery reached about 82.7 %.
基金All the coauthors from different centers in the name list have the same contribution to this paper. There is no ordering difference. This study was supported by the grants from National Natural Science Foundation of China （No. 30800507, 30770934）.
文摘Background Epidemiologic studies have shown an independent and definite association between obstructive sleep apnea （OSA） and hypertension. This study aimed to define the association between daytime blood pressure and severity of OSA in Chinese population in mainland of China. Methods Twenty university hospital sleep centers in mainland of China were invited by the Chinese Medical Association （CMA） to participate in this epidemiologic study and 2297 consecutive patients （aged 18-85 years; 1981 males and 316 females） referred to these twenty sleep centers for evaluation of OSA between January 2004 and April 2006 were prospectively enrolled. Nocturnal polysomnography was performed in each patient, and disease severity was assessed based on the apnea-hypopnea index （AHI）. These patients were classfied into four groups： non-apneic control （control, n=257） with AHI 〈5 episodes/hour; mild sleep apnea （mild, n=402） with AHI 〉5 and 〈15 episodes/hour; moderate sleep apnea （moderate, n=460） with AHI 〉15 and 〈30 episodes/hour and severe sleep apnea （severe, n=1178） with AHI 〉30 episodes/hour. Daytime blood pressure measurements were performed under standardized conditions in each patient at 10 a.m. in office on the day of referring to sleep centers for getting average value. All the patients were requested to quit medications related to blood pressure for three days before the day of assessing. Results Both daytime systolic blood pressure and diastolic blood pressure values were significantly related to AHI positively （r = 0.201 and 0.276, respectively; both P values 〈0.001） and to nadir nocturnal oxygen saturation negatively （r = -0.215 and -0.277, respectively; both P values 〈0.001）, which were the parameters of OSA severity. In two special designed mean plots, means of daytime systolic and diastolic blood pressure increased gradually with increasing AHI. Beyond AHI of 61-65, this increasing trend reached a plateau. Conclusions The results showed that OSA severity
基金Supported by China National Science and Technology Major Projects 12th 5-year Plan(No.2012ZX10005004)
文摘Background： The domestic prevalence of chronic hepatitis B （CHB） in China is 7.18% in 2006, imposing great societal healthcare burdens. Nucleot（s）ide analogues （NUCs） anti-hepatitis B virus （HBV） therapies are widely applied despite the relatively low rate of seroconversion and high risk of drug-resistant mutation. More effective treatments for CHB deserve further explorations. Combined therapy of NUCs plus Chinese herbal medicine （CHM） is widely accepted in China, which is recognized as a prospective alternative approach. The study was primarily designed to confirm the hypothesis that Tiaogan-Yipi Granule （调肝益脾颗粒, TGYP） or Tiaogan-Jianpi-Jiedu Granule （调肝健脾解毒颗粒, TGJPJD） plus entecavir tablet （ETV） was superior over ETV monotherapy in enhancing HBeAg loss rate. Methods： The study was a nationwide, large-scale, multi-center, double-blind, randomized, placebo-controlled trial with a designed duration of 108 weeks. A total of 16 hospitals and 596 eligible Chinese HBeAg positive CHB patients were enrolled from November 2012 to September 2013 and randomly allocated into 2 groups in 1：1 ratio via central randomization system： experimental group （EG） and control group （CG）. Subjects in EG received CM formulae （TGYP or TGJPJD, 50 g per dose, twice daily） plus ETV tablet （or ETV placebo） 0.5 mg per day in the first 24 weeks （stage 1）, and CHM granule plus ETV tablet （0.5 mg per day） from week 25 to 108 （stage 2）. Subjects in CG received CHM Granule placebo plus E＇IV tablet （0.5 mg per day） for 108 weeks throughout the trial. The assessments of primary outcomes （HBV serum markers and HBV-DNA） were conducted by a third-party College of American Pathologists （CAP） qualified laboratory. Adverse effects were observed in the hospitals of recruitment. Discussion： The study was designed to compare the curative effect of CM plus E＇IV and ETV monotherapy in respect of HBeAg loss, which is recognized by the European Asso
