期刊文献+
共找到450篇文章
< 1 2 23 >
每页显示 20 50 100
Toxoplasma ROP16Ⅰ/Ⅲ ameliorated inflammatory bowel diseases via inducing M2 phenotype of macrophages 被引量:8
1
作者 Yong-Wei Xu Rui-Xin Xing +7 位作者 Wen-Hui Zhang Lu Li Yi Wu Jing Hu Cong Wang Qing-Li Luo Ji-Long Shen Xi Chen 《World Journal of Gastroenterology》 SCIE CAS 2019年第45期6634-6652,共19页
BACKGROUND Inflammatory bowel disease(IBD) is characterized by chronic and non-specific inflammation of the intestinal mucosa and mainly includes ulcerative colitis and Crohn’s disease.AIM To explore the beneficial... BACKGROUND Inflammatory bowel disease(IBD) is characterized by chronic and non-specific inflammation of the intestinal mucosa and mainly includes ulcerative colitis and Crohn’s disease.AIM To explore the beneficial effect of Toxo ROP16Ⅰ/Ⅲ-induced M2 phynotype macrophages in homeostasis of IBDs through downregulation of M1 inflammatory cells.METHODS RAW264.7 macrophages stimulated by lipopolysaccharide(LPS)(M1 cells) were co-cultured with Caco-2 cells as an inflammatory model of IBD in vitro.The expression of Toxo ROP16Ⅰ/Ⅲ was observed in RAW264.7 macrophages that were transfected with p EGFP-rop16Ⅰ/Ⅲ.The phenotypes of M2 and M1 macrophage cells were assessed by quantitative real-time reverse transcriptase polymerase chain reaction and the expression of tumor necrosis factor(TNF)-α,interleukin(IL)-1β,IL-6,transforming growth factor(TGF)-β1,IL-10,inducible nitric oxide synthase(i NOS),and arginase-1(Arg-1) was detected.The expression of i NOS,Arg-1,signal transducer and activator of transcription 3(Stat3),p-Stat3,Stat6,pStat6,programmed death ligand-2(PD-L2),caspase-3,-8,and-9 was analyzed by Western blotting,and Griess assays were performed to detect nitric oxide(NO).TNF-α,IL-1β,IL-6,TGF-β1,and IL-10 expression in the supernatants was detected by enzyme-linked immunosorbent assay,and Caco-2 cell apoptosis was determined by flow cytometry after mixing M1 cells with M2 cells in a Caco-2 cell co-culture system.RESULTS M1 cells exhibited significantly increased production of i NOS,NO,TNF-α,IL-1β,and IL-6,while Toxo ROP16Ⅰ/Ⅲ induced macrophage bias to M2 cells in vitro,showing increased expression of Arg-1,IL-10 and TGF-β1 and elevated production of p-Stat3 and p-Stat6.The mixed M1 and M2 cell culture induced by Toxo ROP16 Ⅰ/Ⅲ exhibited decreased production of NO and i NOS and upregulated expression of Arg-1 and PD-L2.Accordingly,Caco-2 cells became apoptotic,and apoptosis-associated proteins such as caspase-3,-8 and-9 were dampened during co-culture of M1 and M2 cells.Flow cytometry analysis showed that co-culture of M1 cells with Caco-2 cells facilitated the apoptosis of Caco-2 cells,but co-culture of M1 and M2 cells alleviated Caco-2 cell apoptosis.CONCLUSION Toxo ROP16 Ⅰ/Ⅲ-induced M2 macrophages inhibited apoptosis of Caco-2 cells caused by M1 macrophages.This finding may help gain a better understanding of the underlying mechanism and represent a promising therapeutic strategy for IBDs. 展开更多
关键词 Toxoplasma ROP16/Ⅲ CACO-2 Inflammatory bowel disease IMMUNITY Classically activated macrophages Alternatively activated macrophages
下载PDF
A first-in-man study of the Firesorb Sirolimus Target Eluting Bioresorbable Vascular Scaffold in Patients with Coronary Artery Disease(FUTURE-Ⅰ):two-year clinical and imaging outcomes 被引量:2
2
作者 Bo Xu Changdong Guan Runlin Gao 《中国循环杂志》 CSCD 北大核心 2018年第S01期137-137,共1页
Background A newer generation bioresorbable scaffold Firesorb(MicroP ort,Shanghai,China),with thinner-strut(100~125μm),is constructed from a PLLA backbone abluminally coated with a PDLLA layer eluting sirolimus.FUTUR... Background A newer generation bioresorbable scaffold Firesorb(MicroP ort,Shanghai,China),with thinner-strut(100~125μm),is constructed from a PLLA backbone abluminally coated with a PDLLA layer eluting sirolimus.FUTURE-I study intended to assess the feasibility,preliminary safety and effectiveness of the Firesorb BRS in patients with single de novo coronary artery lesions.We evaluated the long-term performance of the new generation BRS with thinner struts serially(post-procedure,at 6 months,1,2 year)after implantation. 展开更多
关键词 Coronary Artery disease PLLA FUTURE-
下载PDF
Retinal capillary plexus in Parkinson’s disease using optical coherence tomography angiography
3
作者 Ioannis Giachos Spyridon Doumazos +6 位作者 Anastasia Tsiogka Konstantina Manoli George Tagaris Tryfon Rotsos Vassilios Kozobolis Ioannis Iliopoulos Marilita Moschos 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第1期131-136,共6页
AIM:To evaluate the alterations of the retinal microvasculature and foveal avascular zone in patients with Parkinson’s disease(PD)using optical coherence tomography angiography(OCT-A).METHODS:A retrospective study of... AIM:To evaluate the alterations of the retinal microvasculature and foveal avascular zone in patients with Parkinson’s disease(PD)using optical coherence tomography angiography(OCT-A).METHODS:A retrospective study of PD patients examined in the Ophthalmology Department of the General Hospital of Athens,“Georgios Gennimatas”from March 2021 to March 2022 was conducted.Totally 44 patients with PD were included and 18 healthy controls were examined,hence a total of 124 eyes were enrolled in the study.The foveal and parafoveal superficial and deep capillary plexus vascular density(fSCP-VD,fDCP-VD,pSCP-VD,pDCP-CD)and foveal avascular zone(FAZ)were quantified with OCTA.Optical coherence tomography(OCT)was used to measure macular thickness.Our statistical analysis was conducted by using a mixed effect linear regression model.RESULTS:After adjustment for age and gender,the mean parafoveal superficial capillary plexus vascular density(pSCP-VD)and mean parafoveal deep capillary plexus vascular density(pDCP-VD)were significantly decreased in individuals with PD(P<0.001 in both)by-2.35(95%CI-3.3,-1.45)and-7.5(95%CI-10.4,-4.6)respectively.fSCP-VD and fDCP-VD didn’t approach statistical significance.The FAZ area and perimeter were significantly decreased(P<0.001 in both)by-0.1 mm^(2)(95%CI-0.13,-0.07)and-0.49 mm^(2)(95%CI-0.66,-0.32)respectively.Circularity didn’t approach statistical significance.Central retinal thickness(CRT)was significantly decreased in individuals with PD(P<0.001)by-23.1μm(95%CI-30.2,-16)and temporal retinal thickness(TRT)was decreased(P=0.025)by-11μm(95%CI-22,-1.5)while nasal retinal thickness(NRT)only approached statistical significance(P=0.066).CONCLUSION:The mean pSCP-VD,pDCP-VD,CRT and TRT are significantly decreased and FAZ is altered in individuals with PD.These findings can be potentially used as biomarkers for the diagnosis and evaluation of early PD. 展开更多
关键词 Parkinson’s disease optical coherence tomography angiography retinal vascular density foveal avascular zone
下载PDF
Establishment of a Real-time Fluorescent Quantitative RTPCR Method for Detecting NP Gene of Class Ⅰ Newcastle Disease Virus(NDV)
4
作者 Junping CAO Xiaoquan WANG +2 位作者 Han CHENG Xiaowen LIU Xiufan LIU 《Agricultural Biotechnology》 CAS 2018年第6期16-19,24,共5页
Newcastle disease( ND) is one of the most serious infectious diseases that infect the poultry industry.There is only one serotype of Newcastle disease virus( NDV),but NDVs can be divided into two distinct classes( cla... Newcastle disease( ND) is one of the most serious infectious diseases that infect the poultry industry.There is only one serotype of Newcastle disease virus( NDV),but NDVs can be divided into two distinct classes( class Ⅰ,and class Ⅱ) according to their genetic relationship.To develop a method for rapid quantitative detection of class Ⅰ NDV,a pair of primers and a TaqM an probe were designed and synthesized according to the conservative sequence of NP gene of class Ⅰ NDV.The positive recombinant plasmid harboring NP gene of JS-18-05 isolate was used as a positive template to establish the standard curve.A real-time fluorescent quantitative RT-PCR method was established for rapid detection of class Ⅰ NDV with strong specificity,high sensitivity and good repeatability.The established method exhibited a good linear relationship within the concentration of 102 to 108 copies of NDV,by which 1 μl of 10 copy of NDV nucleic acid could be detected in the initial template.Compared with conventional virus isolation methods,the established method had similar sensitivity and led to the same results in detecting33 class Ⅰ,class Ⅱ NDV isolates.The study provided the basis for rapid quantitative detection of class Ⅰ NDVs and further clarification of their pathogenicity and pathogenic mechanism in poultry. 展开更多
关键词 CLASS Newcastle disease virus NUCLEOCAPSID protein gene FLUORESCENT quantitative RT-PCR
下载PDF
Study on Model Establishment of Regionalization Management of Specific Equine Disease-free Zone
5
作者 PENG Cong WANG Yi-qing +10 位作者 ZHONG Cai-xin LIANG Cai-yue PENG Nan-xiu SHEN Dan PANG Wei-zhi ZHANG Guo-xi XIE Yue-you ZHONG Jiang-guo HU Yong-hui ZHANG Hai-ming CAO Ai-qiao 《Animal Husbandry and Feed Science》 CAS 2013年第3期125-130,共6页
[Objective]The model of regionalization management of specific equine disease-free zone were analysed and discussed. [Methods]International animal epidemics regionalization management experience and specific equine di... [Objective]The model of regionalization management of specific equine disease-free zone were analysed and discussed. [Methods]International animal epidemics regionalization management experience and specific equine disease-free zone establishment were analysed and discussed based on the State and OIE principles. [Results]The regionalization management of specific equine disease-free zone with county administrative regions level of international recognition was established first in China,combined with the region's geographical barrier and animal health. [Conclusion]The aim is to to provide experience and reference for other areas to establish specific disease-free zone. 展开更多
关键词 Specific equine disease-free zone(EDFZ) Regionalization management Model
下载PDF
Risk Assessment and Comprehensive Control of Insect and Wild Animal Vectors in the Prevalence of Related Equine Diseases in the Specific Equine Disease-free Zone of Guangzhou Asian Games
6
作者 PENG Cong LIANG Zhuo-yue +13 位作者 PENG Nan-xiu ZHANG Hai-ming HU Yong-hui XUE Hong SHEN Dan HUANG Jie KUANG Hui-yi ZHANG Hai-bing CAI Yi-fan XIE Yue-you ZHONG Jiang-guo CHEN Jin-ping YANG Yue-ping WANG Jun-wei 《Animal Husbandry and Feed Science》 CAS 2013年第2期95-100,104,共7页
[ Objective] In order to construct the specific equine disease-free zone of of the Guangzhou Asian Games, to ensure that the equestrian events of Guangzhou Asian Games be smoothly held. [Methods] The species, quantiti... [ Objective] In order to construct the specific equine disease-free zone of of the Guangzhou Asian Games, to ensure that the equestrian events of Guangzhou Asian Games be smoothly held. [Methods] The species, quantities, distribution and seasonal variations of insects and wild animals in related zones were investigated from 2008 to 2010, and the collected samples of the insects and wild animals were tested in laboratory for related equine diseases. [Results] The investigations indicated that there were some mosquitoes, flies, horseflies, punkies, ticks, bats, wild birds and wild bears in equastrianism venue and peripheral regions of disease-free zone of the Guangzhou Asian Games, the laboratory results of Japa- nese encephalitis, vesicular stomatitis, Nipah virus disease, West Nile fever, and Trypanosomiasis evansi, were all negative. According to the in- vestigations and test results, the risk assessments of insect and wild animal vectors in the prevalence of related equine diseases were made to con- firm that the risk was relatively low or very low, and comprehensive prevention and control measures with prevention as major measures and insecti- cides application and environment managements as supplementary means were made on the basis of the risk assessment conclusions. [ Conclu- sions] This research has laid a solid foundation for the successful building of the first specific equine disease-free zone in our country, ensured the smooth holding of the 16th equastdan competition in Guangzhou Asian Games. 展开更多
关键词 pecific equine disease-free zone in Guangzhou Asian Games INSECTS Wild animals Risk assessment Comprehensive control measures
下载PDF
Osteoporosis and fractures in liver disease: Relevance, pathogenesis and therapeutic implications 被引量:21
7
作者 Inaam A Nakchbandi 《World Journal of Gastroenterology》 SCIE CAS 2014年第28期9427-9438,共12页
It is being increasingly recognized that patients with liver disease develop bone loss that can be severe enough to lead to atraumatic fractures and thus markedly diminish life quality and expectancy. The estimated pr... It is being increasingly recognized that patients with liver disease develop bone loss that can be severe enough to lead to atraumatic fractures and thus markedly diminish life quality and expectancy. The estimated prevalence for liver-related osteoporosis is between 20-420/100000 of the general population, and fractures between 60-880/100000. It should be kept in mind that up to 40% of patients with chronic liver disease may experience a fracture. The pathogenic mediators include fibronectin, insulin like growth factor-I, and various cytokines, but decreased vitamin D and/or treatment with corticosteroids contribute to worsening bone health. Despite the advances in bone biology that have shed some light on the pathogenesis of this bone loss, treatment options remain nonspecific and tightly linked to treatments of other forms of osteoporosis. Thus, treatment should include calcium and vitamin D supplementation in all patients with chronic liver disease. Therapy with bisphosphonates should be considered, especially in patients receiving corticosteroids. This review focuses on the prevalence of this entity as well as the evidence available with regard to the pathogenesis of bone loss in liver disease, the diagnostic steps required in all patients, and the therapeutic options available. 展开更多
关键词 OSTEOPOROSIS Liver disease Fracture Prevalence PATHOGENESIS FIBRONECTIN Insulin like growth factor- Therapy Vitamin D Calcium
下载PDF
GIS-Based Situational Analysis of Cutaneous Leishmaniasis Disease (CLD) in Sri Lanka
8
作者 Sampath Arunashantha Mangala Jayarathne +2 位作者 Saseeka Wijesekera Nishan Sakalasooriya Charuni Kottage 《Journal of Geoscience and Environment Protection》 2023年第3期70-86,共17页
Cutaneous Leishmaniasis (CL) is a severe health problem and a parasitic disease on human dermal and widely pervades tropical and subtropical developing counties. The study is mainly focused on Geographic Information S... Cutaneous Leishmaniasis (CL) is a severe health problem and a parasitic disease on human dermal and widely pervades tropical and subtropical developing counties. The study is mainly focused on Geographic Information System (GIS) based Situational Analysis (SA). The clinically recorded 394 CL patients’ information was obtained from the District General Hospital of Polonnaruwa (DGHP) for 2017 and 2018. The spatial distribution of these patients was collected using Global Positing System (GPS). Moran’s I Index spatial autocorrelation technique and Getis-Ord Gi were used to identify the study site’s hot spot and cold spot areas. More than 75% of the CL patients’ population were highly involved with agricultural activities, and they are the highly exposed group of the CL in the study area. Also, 75% of the CL population were men, and the highly vulnerable age group was 35 - 39 men and 40 - 44 women. The generated Moran’s I Index indicates 0.0321, representing a randomly distributed pattern of CL patients over the District, and the Getis-Ord Gi Z Score value was >1.96 (p < 0.05). It is revealed that, during and in the post-harvesting periods of paddy cultivation, farmers are highly exposed to sandflies becoming CL patients. Due to this situation, the researchers observed that the highest number of patients have reported in May of both years and the infection period is two to four weeks earlier than the reported month. Hence to prevent the disease spread, it is essential to implement an awareness program regarding sandflies’ behaviour and CLD. 展开更多
关键词 Sandflies disease Geoinformatics Techniques Environmental Factors Dry zone
下载PDF
The Diseases of Coffee under the Changing Climate: The Established Situation in Kenya
9
作者 Harrison M. Mugo Lucy W. Irungu Paul N. Ndegwa 《Journal of Agricultural Science and Technology(A)》 2012年第2期265-272,共8页
The distribution of key diseases of coffee particularly the Coffee berry disease (CBD) and Coffee leaf rust (CLR) in Kenya depended on coffee growing agro-ecological zones, which have varied climatic conditions. U... The distribution of key diseases of coffee particularly the Coffee berry disease (CBD) and Coffee leaf rust (CLR) in Kenya depended on coffee growing agro-ecological zones, which have varied climatic conditions. Under the changing climate, there has been an observed shift in their altitudinal distribution. To ascertain whether these diseases have shifted in their distribution, an extensive field survey covering 120 coffee farmers/households in all the coffee growing agro ecological zones was conducted. The survey established four coffee diseases; -viz. Coffee berry disease, Coffee leaf rust, Fusarium root disease (FRD) and Bacterial blight of coffee (BBC) as of economic importance to the farming community. The CBD, CLR and FRD were widely distributed in all coffee growing agro ecological zones. Of the four diseases, the CBD (65%) and CLR (63.3%) were most common as reported by the farmers, however these diseases dominated in their respective agro ecological zones; CBD (72.2%) in Upper Midland 1 (UM1) and CLR (75.0%) in Upper Midland 2 (UM2). Both diseases equally infected coffee farms (69.2%) in main coffee zone (UM2). According to the survey said diseases have increased their altitudinal range, a trend that will increase diseases pressure in coffee growing areas. 展开更多
关键词 Coffee berry disease coffee leaf rust climate change agro-ecological zones altitudinal range.
下载PDF
Retinal thickness and vascular parameters using optical coherence tomography in Alzheimer's disease:a meta-analysis
10
作者 Samran Sheriff Ting Shen +8 位作者 Sandra Abdal Danit Saks Mehdi Mirzaei Veer Gupta Nitin Chitranshi Yuyi You Angela Schultz Stuart L.Graham Vivek Gupta 《Neural Regeneration Research》 SCIE CAS CSCD 2023年第11期2504-2513,共10页
Examining the retinal tissue has the potential to provide a unique method and technique to quantify Alzheimer’s disease-related changes in participants at various stages of the disease.In this metaanalysis,we aimed t... Examining the retinal tissue has the potential to provide a unique method and technique to quantify Alzheimer’s disease-related changes in participants at various stages of the disease.In this metaanalysis,we aimed to investigate the association of various optical coherence tomography parameters with Alzheimer’s disease and whether retinal measurements can be used to diffe rentiate between Alzheimer’s disease and control subjects.Scientific databases including Google Schola r,Web of Science,and PubMed were systematically searched for published articles that evaluated retinal nerve fiber layer thickness and retinal microvascular network in Alzheimer’s disease and control subjects.Seventy-three studies(5850 participants,including 2249 Alzheimer’s disease patients and 3601controls) were included in this meta-analysis.Relative to controls,Alzheimer’s disease patients had a significantly lower global retinal nerve fiber layer thickness(standardized mean difference [SMD]=-0.79,95% confidence intervals [CI]:-1.03 to-0.54,P <0.00001) as well as each quadrant being thinner in Alzheimer’s disease versus controls.Regarding macular paramete rs,values measured by optical coherence tomography were significantly lower in Alzheimer’s disease than controls for macular thickness(pooled SMD:-0.44,95% CI:-0.67 to-0.20,P=0.0003),foveal thickness(pooled SMD=-0.39,95% CI:-0.58 to-0.19,P <0.0001),ganglion cell inner plexiform layer(SMD=-1.26,95% CI:-2.24 to-0.27,P=0.01) and macular volume(pooled SMD=-0.41,95% CI-0.76 to-0.07,P=0.02).Analysis using optical coherence tomography angiography parameters revealed mixed results between Alzheimer’s disease and controls.Superficial vessel density(pooled SMD=-0.42,95% CI:-0.68 to-0.17,P=0.0001) and deep vessel density(pooled SMD=-0.46,95% CI:-0.75 to-0.18,P=0.001) were found to be thinner in Alzheimer’s disease patients whereas the foveal avascular zone(SMD=0.84,95% CI:0.17-1.51,P=0.01) was larger in controls.Vascular density and thickness of various retinal laye rs were decreased in Alzheimer’s disease patients compared to controls.Our results provide evidence for optical coherence tomography technology having the potential to detect retinal and microvascular changes in patients diagnosed with Alzheimer’s disease and aid in monito ring and early diagnosis methods. 展开更多
关键词 Alzheimer’s disease foveal avascular zone macular thickness optical coherence tomography optical coherence tomography angiography RETINA retinal nerve fiber layer vessel density
下载PDF
Postprandial response of bone turnover markers in patients with Crohn's disease
11
作者 Ioannis Karatzoglou Maria P Yavropoulou +6 位作者 Maria Pikilidou George Germanidis Evangelos Akriviadis Alexra Papazisi Michael Daniilidis Pantelis Zebekakis John G Yovos 《World Journal of Gastroenterology》 SCIE CAS 2014年第28期9534-9540,共7页
AIM:To investigate the postprandial response of bone turnover markers in patients with Crohn’s disease(CD).METHODS:Fifty nine patients with CD aged 38±14years,and 45 healthy individuals matched for age and body ... AIM:To investigate the postprandial response of bone turnover markers in patients with Crohn’s disease(CD).METHODS:Fifty nine patients with CD aged 38±14years,and 45 healthy individuals matched for age and body mass index were included in the study.All participants underwent an oral glucose tolerance test(OGTT)after an overnight fast and serum levels of the bone resorption marker C-terminal crosslinking telopeptide of type?Ⅰ?collagen(CTX-Ⅰ)and the bone formation marker procollagen type?Ⅰ?N propeptide were measured.Activity of the disease was assessed by calculation of the Crohn’s disease activity index(CDAI).RESULTS:Serum CTX-I was significantly higher in patients compared to controls(CTX-I:453±21 pg/mL vs 365±25 pg/mL,P=0.008),and values were significantly correlated with the activity of the disease(r=0.435,P=0.001).Results from OGTT-induced suppression of CTX-I showed two different trends.Patients with more active disease(assessed as CDAI>150)had a more excessive suppression of CTX-I compared to controls(55%vs 43%P<0.001),while patients on remission(assessed as CDAI<150)demonstrated an attenuated CTX-I suppression(30%vs 43%P<0.001).In line with this,CTX-I suppression after oral glucose load was significantly correlated with the activity of the disease(r=0.913,P<0.001).CONCLUSION:The physiological skeletal response of postprandial suppression of bone resorption is maintained in patients with CD and is strongly dependent to the activity of the disease. 展开更多
关键词 Crohn's disease Bone metabolism Postprandial bone resorption Oral glucose tolerance test C-terminal crosslinking telopeptide of type collagen
下载PDF
Research progress in the efficacy of deep brain stimulation with different targets in Parkinson's disease
12
作者 AI Xiang-bai HUANG Xiao-gan +2 位作者 WANG Yi-tian LI Jun-ju ZHAO Jian-nong 《Journal of Hainan Medical University》 CAS 2023年第21期53-59,共7页
Parkinson's disease(PD)is a chronic progressive neurodegenerative disease.Deep brain stimulation(DBS)is an effective treatment for patients with advanced PD.There are many DBS targets for PD,including subthalamic ... Parkinson's disease(PD)is a chronic progressive neurodegenerative disease.Deep brain stimulation(DBS)is an effective treatment for patients with advanced PD.There are many DBS targets for PD,including subthalamic nucleus(STN),globus pallidus(GPi),meso-ventral thalamic nucleus(VIM),pontine peduncle nucleus(PPN),posterior subthalamic region(PSA)and zonation of undetermined zone(ZI).This paper summarizes the efficacy of each target in the treatment of PD with DBS,not only makes a systematic analysis and comparison of motor symptoms,but also makes a detailed description of the efficacy of non-motor symptoms,so as to provide a personalized treatment basis for PD patients to select appropriate target targets in DBS. 展开更多
关键词 Parkinson's disease Deep brain stimulation Subthalamic nucleus Globus pallidus Ventral thalamic nucleus Pontine peduncle nucleus Posterior subthalamic areas Zonation of undetermined zone
下载PDF
Space-Time Analysis of Foot-and-Mouth Disease from 2005 to 2014 among Cattle Populations in Benin:A Retrospective Study
13
作者 Nestor Noudeke Evelyne Houndje +3 位作者 Olivier Zannou Ignace Dotche Issaka Youssao Souaibou Farougou 《Open Journal of Animal Sciences》 2017年第1期30-44,共15页
Many cases of foot-and-mouth disease (FMD) are reported every year in Benin. In order to elucidate the epidemiology of this disease, a space-time analysis was carried out in all the 77 municipalities of the country ai... Many cases of foot-and-mouth disease (FMD) are reported every year in Benin. In order to elucidate the epidemiology of this disease, a space-time analysis was carried out in all the 77 municipalities of the country aiming to identify high risk areas as well as risk factors such as season and transhumance on the period of 2005 to 2014. Data were collected retrospectively from the Directory of Animal Production of Benin. The method of Kulldorff was used with the software SaTScanTM for the space-time analysis while a script was designed in the software R to generate new sizes with three different models of transhumance. From 2005 to 2014, 434 foci were recorded. Many outbreaks occurred in August, September and October. This period corresponds to the small rainy season in the South and the rainy season of the North. The municipality of Parakou was regarded as the source FMD outbreaks in Benin because it hosts one of the largest livestock markets in the country and many rivers. It was the municipality at the highest risk. The other municipalities at risk were Nikki, Pèrèrè and Kalaléas well as Karimama (hosting the national parkW), Kouandé and Toucountouna located nearby Pendjari’s national park. This study revealed that the space-time configuration is real and the main factors of persistence and dissemination of FMD virus were national parks, classified forests and the livestock market of Parakou all located in the North. The variation of the number of cattle due to their transhumance from the North to the South did not influence the zones at risk. Therefore, Northern Benin is probably at high risk of FMD. 展开更多
关键词 BENIN Foot-and-Mouth disease zone at Risk Space-Time Analysis TRANSHUMANCE
下载PDF
塔中Ⅰ号坡折带上奥陶统礁滩型储层发育特征及其主控因素 被引量:56
14
作者 王招明 赵宽志 +4 位作者 邬光辉 张丽娟 王振宇 罗春树 李新生 《石油与天然气地质》 EI CAS CSCD 北大核心 2007年第6期797-801,共5页
塔中Ⅰ号坡折带上奥陶统发育大型台缘礁滩复合体,具有小礁大滩的结构特征,多旋回礁滩体纵向多期加积叠置、横向复合连片。静态和动态资料表明礁滩复合体基质孔隙度低,属低孔特低渗储层,以孔洞-裂缝型、洞穴型、孔洞型储层为主,次生的溶... 塔中Ⅰ号坡折带上奥陶统发育大型台缘礁滩复合体,具有小礁大滩的结构特征,多旋回礁滩体纵向多期加积叠置、横向复合连片。静态和动态资料表明礁滩复合体基质孔隙度低,属低孔特低渗储层,以孔洞-裂缝型、洞穴型、孔洞型储层为主,次生的溶蚀孔洞和构造裂缝是礁滩复合体最有效的储、渗空间。研究表明,有利沉积相带是礁滩型储层发育的基础,优质储层主要沿台缘礁滩相展布,岩溶作用和构造作用是古老碳酸盐岩储集性能改善的关键,所形成的大型缝洞系统是油气高产稳产的主要原因。 展开更多
关键词 裂缝 储层特征 岩溶作用 礁滩复合体 塔中号坡折带
下载PDF
塔中Ⅰ号带奥陶系烃包裹体荧光特征与成藏期 被引量:24
15
作者 张鼐 赵瑞华 +3 位作者 张蒂嘉 Liu Keyu 陈延贵 邢永亮 《石油与天然气地质》 EI CAS CSCD 北大核心 2010年第1期63-68,75,共7页
根据显微镜下烃包裹体的荧光特征、与方解石脉的穿插关系以及均一温度等特征,将塔中Ⅰ号坡折带奥陶系储层中发育的烃包裹体划分为4个期次;结合塔中地区区域构造演化特点,研究区四期烃包裹体分别对应着4个油气成藏期次,即志留纪末低成熟... 根据显微镜下烃包裹体的荧光特征、与方解石脉的穿插关系以及均一温度等特征,将塔中Ⅰ号坡折带奥陶系储层中发育的烃包裹体划分为4个期次;结合塔中地区区域构造演化特点,研究区四期烃包裹体分别对应着4个油气成藏期次,即志留纪末低成熟油形成时期,海西晚期生油期,早喜马拉雅期凝析油-湿气形成期,喜马拉雅期后期干气阶段。这4期烃包裹体在塔中Ⅰ号带奥陶系储层中具有明显的分带性,由东南浅埋藏油区向西北深埋油区将塔中Ⅰ号带奥陶系储层包裹体分布情况分成4个区域,其中第Ⅲ,Ⅳ期烃包裹体古油对现在油气藏起决定作用。 展开更多
关键词 荧光特征 成藏期次 奥陶系 烃包裹体 塔中号坡折带
下载PDF
鸡传染性法氏囊病病毒SYBR GreenⅠ实时荧光定量RT-PCR检测方法的建立 被引量:9
16
作者 朱春华 林甦 +6 位作者 程龙飞 陈红梅 陈珍 刘斌琼 蔡国漳 林羽 黄瑜 《福建农业学报》 CAS 2011年第2期175-179,共5页
RT-PCR扩增IBDV的VP5基因保守片段,将其克隆到pMD18-T载体,经测序鉴定得到阳性质粒。以阳性质粒为标准品,建立SYBR GreenⅠ实时荧光定量RT-PCR的标准曲线和溶解曲线。结果表明,IBDV荧光定量PCR的标准曲线Ct值与3.29×10~3.29×... RT-PCR扩增IBDV的VP5基因保守片段,将其克隆到pMD18-T载体,经测序鉴定得到阳性质粒。以阳性质粒为标准品,建立SYBR GreenⅠ实时荧光定量RT-PCR的标准曲线和溶解曲线。结果表明,IBDV荧光定量PCR的标准曲线Ct值与3.29×10~3.29×108之间的病毒基因拷贝数呈现良好的线性关系。该方法灵敏度可达33拷贝,且特异性和重复性好。SYBR GreenⅠ实时荧光定量RT-PCR方法可用于IBDV的病原诊断和病毒的定量分析。 展开更多
关键词 传染性法氏囊病病毒 SYBR Green 检测
下载PDF
IGF-Ⅰ对培养兔关节软骨细胞作用的实验研究 被引量:9
17
作者 蓝旭 刘雪梅 +1 位作者 葛宝丰 许建中 《中国骨伤》 CAS 2001年第6期341-342,共2页
目的 了解胰岛素样生长因子Ⅰ (IGF Ⅰ )对培养关节软骨细胞增殖及代谢的影响。方法体外单层培养兔关节软骨细胞 ,实验组以 10 ,10 0 ,2 0 0ng/mlIGF Ⅰ作用细胞 2、4、6天 ,对照组不加IGF Ⅰ作用培养细胞。检测细胞DNA及基质中糖醛酸... 目的 了解胰岛素样生长因子Ⅰ (IGF Ⅰ )对培养关节软骨细胞增殖及代谢的影响。方法体外单层培养兔关节软骨细胞 ,实验组以 10 ,10 0 ,2 0 0ng/mlIGF Ⅰ作用细胞 2、4、6天 ,对照组不加IGF Ⅰ作用培养细胞。检测细胞DNA及基质中糖醛酸含量。用流式细胞仪分析在 10 0ng/mlIGF Ⅰ作用下细胞周期亚时相。结果 IGF Ⅰ在 10~ 10 0ng/ml浓度范围内 ,对培养软骨细胞增殖和代谢有促进作用 ,以 10 0ng/ml浓度作用效果最佳。细胞周期分析 ,实验组DNA合成前期 (G1期 )较对照组缩短。结论 IGF Ⅰ促进软骨细胞的增殖与代谢 。 展开更多
关键词 胰岛素样生长因子I 关节疾病 软骨 细胞培养
下载PDF
仅吻合动脉的手指末节Yamano Ⅰ区断指再植 被引量:13
18
作者 孙大炜 刘晓春 +4 位作者 吴伟炽 黄国英 祝李霖 兰万利 黄东 《实用手外科杂志》 2016年第2期144-146,共3页
目的 探讨仅吻合动脉在手指末节Yamano Ⅰ区断指再植中的临床疗效.方法 收治28例(36指)Yamano Ⅰ区手指末节离断再植病例,术中仅吻合1~2条指尖动脉,术后常规“三抗”治疗,并观察再植指血运情况.结果 28例(36指)术后成活34指,21指... 目的 探讨仅吻合动脉在手指末节Yamano Ⅰ区断指再植中的临床疗效.方法 收治28例(36指)Yamano Ⅰ区手指末节离断再植病例,术中仅吻合1~2条指尖动脉,术后常规“三抗”治疗,并观察再植指血运情况.结果 28例(36指)术后成活34指,21指出现血管危象,给予甲床放血结合指尖放血处理后危象解除,2例(3指)拒绝行探查术,逐渐出现干性坏死,成活率为91.67%.术后随访3~12个月(平均8.5个月),成活指外形满意,感觉恢复良好,按断指再植评分标准均为优.结论 手指末节Yamano Ⅰ区断指再植,仅吻合动脉,手术操作简便,临床效果满意. 展开更多
关键词 手指末节 Yamano 断指再植
下载PDF
高密度脂蛋白组分中血浆淀粉样蛋白A与载脂蛋白A-Ⅰ比值在冠心病诊断中的价值 被引量:31
19
作者 赵慧 刘红 +9 位作者 王冬雪 闫丽荣 柴琳 李彦 江岳鑫 华潞 管晓媛 熊筱伟 黄一玲 李一石 《中国循环杂志》 CSCD 北大核心 2015年第3期211-215,共5页
目的:探讨高密度脂蛋白(HDL)组分中血浆淀粉样蛋白A(SAA)与载脂蛋白A-Ⅰ(apoA-Ⅰ)比值在冠心病诊断中的价值。方法:入选我院冠状动脉造影患者152例,按冠状动脉狭窄程度分为冠心病组77例,对照组75例。密度梯度超速离心法分离... 目的:探讨高密度脂蛋白(HDL)组分中血浆淀粉样蛋白A(SAA)与载脂蛋白A-Ⅰ(apoA-Ⅰ)比值在冠心病诊断中的价值。方法:入选我院冠状动脉造影患者152例,按冠状动脉狭窄程度分为冠心病组77例,对照组75例。密度梯度超速离心法分离提取血浆HDL,酶联免疫吸附法分别检测HDL及血浆中SAA与apoA-Ⅰ的含量。结果:与对照组相比,冠心病组HDL组分中SAA(HDL-SAA)显著升高(P〈0.001),HDL组分中apoA-Ⅰ(HDL—apoA-Ⅰ)显著降低(P〈0.001)。多因素logistic回归分析显示HDL—SAA/HDL—apoA—Ⅰ比值与冠心病风险独立相关(比值比:9.521,95%可信区间:3.345~27.100,P〈0.001)。受试者工作特征曲线分析显示HDL—SAA/HDL—apoA—Ⅰ比值具有中等程度诊断冠心病的能力(曲线下面积:0.712,95%可信区间:0.632~0.793,P〈0.001),最佳诊断临界点为3.27。血浆中SAA/apoA—Ⅰ比值与HDL-SAA/HDL—apoA-Ⅰ比值呈显著正相关(r=0.857,P〈0.001),诊断冠心病的能力相似(曲线下面积:0.676,95%可信区间:0.591~0.761,P〈0.001),诊断的最佳临界点为8.3。 展开更多
关键词 冠心病 载脂蛋白A- 高密度脂蛋白 受试者工作特征曲线
下载PDF
DSG-Ⅰ型生物信息红外肝病治疗仪治疗大鼠非酒精性脂肪肝 被引量:6
20
作者 窦爱霞 宗蕾 +6 位作者 周琨 陈婷 潘浩 张权 李继强 房静远 陆伦根 《世界华人消化杂志》 CAS 北大核心 2008年第9期935-940,共6页
目的:观察DSG-Ⅰ型生物信息红外肝病治疗仪治疗大鼠非酒精性脂肪性肝病的疗效.方法:♂SD大鼠50只随机分组,正常对照组20只喂饲普通饲料,模型对照组及近红外光治疗组共30只喂饲高脂饲料(0.88标准普通饲料+0.10猪油+0.02胆固醇).治疗组自1... 目的:观察DSG-Ⅰ型生物信息红外肝病治疗仪治疗大鼠非酒精性脂肪性肝病的疗效.方法:♂SD大鼠50只随机分组,正常对照组20只喂饲普通饲料,模型对照组及近红外光治疗组共30只喂饲高脂饲料(0.88标准普通饲料+0.10猪油+0.02胆固醇).治疗组自13 wk始进行近红外线照射治疗,于20 wk结束治疗并处死各组大鼠,测定血清ALT、AST、GGT、ALP、TP、TG、TC、LDL和HDL水平,同时观察肝组织学改变.结果:20 wk实验结束时,与正常对照组相比,模型对照组肝指数(t=8.65,P<0.01)、血清ALT(t=4.65,P<0.01)、AST(t=4.74,P<0.01)、ALP(t=3.56,P<0.01)、TP(t=6.35,P<0.01)、TC(t=8.41,P<0.01)和LDL(t=8.86,P<0.01)水平显著升高;肝组织脂肪变性(Z= -4.135,P<0.01)、炎症(Z=-3.752,P<0.01)及纤维化程度(Z=-4.156,P<0.01)均较对照组程度重.与模型对照组相比,近红外光治疗组肝指数、血清ALT、GGT、ALP、TP、TG和TC水平均有所下降,但无统计学意义,而AST有明显降低(t=-2.404,P<0.05);肝组织脂肪变及炎症程度较模型组轻,但无统计学意义,而肝纤维化程度较模型组减轻(Z=-3.101,P<0.01).结论:DSG-Ⅰ型生物信息红外肝病治疗仪对大鼠高脂饮食非酒精性脂肪性肝病有一定的治疗作用. 展开更多
关键词 非酒精性脂肪性肝病 DSG-型生物信息 红外肝病治疗仪 大鼠
下载PDF
上一页 1 2 23 下一页 到第
使用帮助 返回顶部