Background： No data on the incidence ofpleural effusion （PE） in Chinese patients with pulmonary embolism are available to date. The aim of the current study was to investigate the frequency of PE in a Chinese popul...Background： No data on the incidence ofpleural effusion （PE） in Chinese patients with pulmonary embolism are available to date. The aim of the current study was to investigate the frequency of PE in a Chinese population of patients with pulmonary embolism. Methods： This was a retrospective observational single-center study. All data of computed tomography pulmonary angiography （CTPA） performed over 6-year period on adult patients with clinically suspected pulmonary embolism were analyzed. Results： From January 2008 until December 2013, PE was identified in 423 of 3141 patients （13.5%） with clinically suspected pulmonary embolism who underwent CTPA, The incidence of PE in patients with pulmonary embolism （19.9%） was significantly higher than in those without embolism （9.4%） （P 〈 0.001 ）. Majority of PEs in pulmonary embolism patients were small to moderate and were unilateral. The locations of emboli and the numbers of arteries involved, CT pulmonary obstruction index, and parenchymal abnormalities at CT were not associated with the development of PE, Conclusions： PEs are present in about one fifth of a Chinese population of patients with pulmonary embolism, which are usually small, unilateral, and unsuitable for diagnostic thoracentesis.展开更多
AIM: To investigate microvascular changes in eyes with central retinal vein occlusion(CRVO) complicated by macular edema before and after intravitreal conbercept injection and evaluate correlations between these chang...AIM: To investigate microvascular changes in eyes with central retinal vein occlusion(CRVO) complicated by macular edema before and after intravitreal conbercept injection and evaluate correlations between these changes and best-corrected visual acuity(BCVA) and retinal thickness. METHODS: Twenty-eight eyes of 28 patients with macular edema caused by CRVO were included in this retrospective study. All patients received a single intravitreal conbercept injection to treat macular edema. BCVA and the results of optical coherence tomography angiography(OCTA) automatic measurements of the vessel density in the superficial(SCP) and deep retinal capillary plexus(DCP), the foveal avascular zone(FAZ) area, the FAZ perimeter(PERIM), the vessel density within a 300-μm wide ring surrounding the FAZ(FD-300), the acircularity index(AI), the choriocapillaris flow area, and retinal thickness were recorded before and at one month after treatment and compared with the results observed in age-and sexmatched healthy subjects. RESULTS: The vessel density in the SCP and DCP, the FD-300, and the flow area of the choriocapillaris were allsignificantly lower in CRVO eyes than in healthy eyes, while the AI and retinal thickness were significantly higher(all P<0.05). After treatment, retinal thickness was significantly decreased, and the mean BCVA had markedly improved from 20/167 to 20/65(P=0.0092). The flow area of the choriocapillaris was also significantly improved, which may result from the reduction of shadowing effect caused by the attenuation of macular edema. However, there were no significant changes in SCP and DCP vessel density after treatment. The flow area of the choriocapillaris at baseline was negatively correlated with retinal thickness.CONCLUSION: OCTA enables the non-invasive, layerspecific and quantitative assessment of microvascular changes both before and after treatment, and can therefore be used as a valuable imaging tool for the evaluation of the follow-up in CRVO patients.展开更多
目的根据白术Atractylodis Macrocephalae Rhizoma指纹图谱形状特征,建立一种快速精准辨识不同产地与炮制品的方法。方法建立45批不同产地与炮制法的白术UPLC指纹图谱库,运用总量统计矩及相似度法、正交偏最小二乘-判别分析(orthogonal ...目的根据白术Atractylodis Macrocephalae Rhizoma指纹图谱形状特征,建立一种快速精准辨识不同产地与炮制品的方法。方法建立45批不同产地与炮制法的白术UPLC指纹图谱库,运用总量统计矩及相似度法、正交偏最小二乘-判别分析(orthogonal partial least squares-discriminant analysis,OPLS-DA)法辨析此指纹图谱的形状特点,捕获其特征指纹图谱及特征峰。结果生品、麸炒、土炒白术UPLC指纹图谱的共有峰16个;安徽与湖南、安徽与浙江、湖南与浙江产地的生白术的总量统计矩相似度分别为0.774~0.982、0.799~0.969、0.788~0.886;3产地的生品与麸炒、生品与土炒、麸炒与土炒白术的总量统计矩相似度中最大值为0.990, 最小值为0.774。再结合OPLS-DA法中变量重要性投影(variable importance for the projection,VIP)分析获得其中1~3、6、16号为区分贡献度最大的5个标志峰,确认6号峰为白术内酯II。结论这5个标志峰对应物质可认定白术的潜在质量标志物(Q-Marker),为白术的产地、炮制法的精准识别及其质量控制与评价提供理论与实验依据,同时也为中药指纹图谱辨形论质做了积极探索。展开更多
AIM: To study the role of mitochondrial energy disorder in the pathogenesis of ethanol-induced gastric mucosa injury. METHODS: Wistar rats were used in this study. A gastric mucosal injury model was established by giv...AIM: To study the role of mitochondrial energy disorder in the pathogenesis of ethanol-induced gastric mucosa injury. METHODS: Wistar rats were used in this study. A gastric mucosal injury model was established by giving the rats alcohol. Gross and microscopic appearance of gastric mucosa and ultrastructure of mitochondria were evaluated. Malondiadehyde (MDA) in gastric mucosa was measured with thiobarbituric acid. Expression of ATP synthase (ATPase) subunits 6 and 8 in mitochondrial DNA (mtDNA) was determined by reverse transcription polymerase chain reaction (RT- PCR). RESULTS:The gastric mucosal lesion index was correlated with the MDA content in gastric mucosa. As the concentration of ethanol was elevated and theexposure time to ethanol was extended, the content of MDA in gastric mucosa increased and the extent of damage aggravated. The ultrastructure of mitochondria was positively related to the ethanol concentration and exposure time. The expression of mtDNA ATPase subunits 6 and 8 mRNA declined with the increasing MDA content in gastric mucosa after gavage with ethanol. CONCLUSION: Ethanol-induced gastric mucosa injury is related to oxidative stress, which disturbs energy metabolism of mitochondria and plays a critical role in the pathogenesis of ethanol-induced gastric mucosa injury.展开更多
Objective To investigate whether Lingbao Huxin Pill(LBHX)protects against acute myocardial infarction(AMI)at the infarct border zone(IBZ)of myocardial tissue by regulating apoptosis and inflammation through the sirtui...Objective To investigate whether Lingbao Huxin Pill(LBHX)protects against acute myocardial infarction(AMI)at the infarct border zone(IBZ)of myocardial tissue by regulating apoptosis and inflammation through the sirtuin 1(SIRT1)-mediated forkhead box protein O1(FOXO1)and nuclear factor-κB(NF-κB)signaling pathways.Methods Six-week-old Wistar rats with normal diet were randomized into the sham,the model,Betaloc(0.9 mg/kg daily),LBHX-L(0.45 mg/kg daily),LBHX-M(0.9 mg/kg daily),LBHX-H(1.8 mg/kg daily),and LBHX+EX527(0.9 mg/kg daily)groups according to the method of random number table,13 in each group.In this study,left anterior descending coronary artery(LADCA)ligation was performed to induce an AMI model in rats.The myocardial infarction area was examined using a 2,3,5-triphenyltetrazolium chloride solution staining assay.A TdT-mediated dUTP nick-end labeling(TUNEL)assay was conducted to assess cardiomyocyte apoptosis in the IBZ.The histopathology of myocardial tissue at the IBZ was assessed with Heidenhain,Masson and hematoxylineosin(HE)staining assays.The expression levels of tumor necrosis factorα(TNF-α),interleukin(IL)-6,IL-1β,and intercellular adhesion molecule-1 were measured using enzyme-linked immunosorbent assays(ELISAs).The mRNA expressions of SIRT1 and FOXO1 were detected by real-time qPCR(RT-qPCR).The protein expressions of SIRT1,FOXO1,SOD2,BAX and NF-κB p65 were detected by Western blot analysis.Results The ligation of the LADCA successfully induced an AMI model.The LBHX pretreatment reduced the infarct size in the AMI rats(P<0.01).The TUNEL assay revealed that LBHX inhibited cardiomyocyte apoptosis at the IBZ.Further,the histological examination showed that the LBHX pretreatment decreased the ischemic area of myocardial tissue(P<0.05),myocardial interstitial collagen deposition(P<0.05)and inflammation at the IBZ.The ELISA results indicated that LBHX decreased the serum levels of inflammatory cytokines in the AMI rats(P<0.05 or P<0.01).Furthermore,Western blot analysis revealed that the LBHX pretr展开更多
目的研究土家族药物扣子七Panax japonicus var. major中三萜皂苷类成分,对其抑制肿瘤细胞增殖活性进行筛选,并初步探讨化合物结构与活性的关系。方法应用多种色谱方法对土家族药物扣子七正丁醇部位进行分离,所分离化合物运用核磁共振...目的研究土家族药物扣子七Panax japonicus var. major中三萜皂苷类成分,对其抑制肿瘤细胞增殖活性进行筛选,并初步探讨化合物结构与活性的关系。方法应用多种色谱方法对土家族药物扣子七正丁醇部位进行分离,所分离化合物运用核磁共振方法进行结构鉴定,应用MTT法测定分离化合物对体外培养人肿瘤细胞增殖的影响。结果从扣子七根茎正丁醇部位分离得到14个三萜皂苷,分别鉴定为竹节参皂苷IVa甲酯(1)、竹节参皂苷Ⅳa丁酯(2)、竹节参皂苷Ⅳ(3)、竹节参皂苷Ⅳa(4)、28-去糖竹节参皂苷Ⅳa(5)、齐墩果酸-3-O-β-D-(6′-甲酯)-吡喃葡萄糖醛酸苷(6)、(24R)-珠子参苷R1(7)、(24R)-拟人参皂苷F11(8)、(20S)-三七皂苷R2(9)、(20S)-人参皂苷Rg2(10)、人参皂苷Rg1(11)、人参皂苷Re(12)、人参皂苷Rd(13)、竹节参皂苷V甲酯(14)。活性研究结果显示,化合物5和6对胃癌BGC-823细胞、结肠癌HCT-116细胞、宫颈癌HeLa细胞及肝癌Hep G2细胞均显示了较强的活性,呈良好的剂量依赖关系,其中化合物5对BGC-823、HCT-116细胞的IC50分别为9.94、14.17μmol/L,化合物6对肝癌HepG2细胞的抑制作用最强(IC50=12.70μmol/L)。结论首次从扣子七中分离得到化合物6并报道了其光谱数据;其部分化学成分显示出抗肿瘤活性,其抗肿瘤活性与齐墩果烷型皂苷密切相关,且活性强弱可能与C-28取代基有关联,相关抗肿瘤机制值得进一步研究。展开更多
BACKGROUND Acute non-variceal upper gastrointestinal bleeding(ANVUGIB)constitutes a prevalent emergency within Gastroenterology,encompassing 80%-90%of all gastrointestinal hemorrhage incidents.This condition is distin...BACKGROUND Acute non-variceal upper gastrointestinal bleeding(ANVUGIB)constitutes a prevalent emergency within Gastroenterology,encompassing 80%-90%of all gastrointestinal hemorrhage incidents.This condition is distinguished by its abrupt onset,swift progression,and notably elevated mortality rate.AIM To gather clinical data from patients with ANVUGIB at our hospital in order to elucidate the clinical characteristics specific to our institution and analyze the therapeutic effectiveness of endoscopic hemostasis.METHODS We retrospectively retrieved the records of 532 patients diagnosed with ANVUGIB by endoscopy at our hospital between March 2021 and March 2023,utilizing our medical record system.Data pertaining to general patient information,etiological factors,disease outcomes,and other relevant variables were meticulously collected and analyzed.RESULTS Among the 532 patients diagnosed with ANVUGIB,the male-to-female ratio was 2.91:1,with a higher prevalence among males.Notably,43.6%of patients presented with black stool as their primary complaint,while 27.4%had hematemesis as their initial symptom.Upon admission,17%of patients exhibited both hematemesis and black stool,while most ANVUGIB patients primarily complained of overt gastrointestinal bleeding.Urgent routine blood examinations at admission revealed that 75.8%of patients had anemia,with 63.4%experiencing moderate to severe anemia,and 1.5%having extremely severe anemia(hemoglobin<30 g/L).With regard to etiology,53.2%of patients experienced bleeding without a definitive trigger,24.2%had a history of using gastric mucosa-irritating medications,24.2%developed bleeding after alcohol consumption,2.8%attributed it to improper diet,1.7%to emotional excitement,and 2.3%to fatigue preceding the bleeding episode.Drug-induced ANVUGIB was more prevalent in the elderly than middle-aged and young individuals,while bleeding due to alcohol consumption showed the opposite trend.Additionally,diet-related bleeding was more common among the young age group compared to the middl展开更多
基金This work was supported in part by grants from National Natural Science Foundation of China，from the High-Level Technical Personnel Training Project of Beijing Municipal Health System,China
文摘Background： No data on the incidence ofpleural effusion （PE） in Chinese patients with pulmonary embolism are available to date. The aim of the current study was to investigate the frequency of PE in a Chinese population of patients with pulmonary embolism. Methods： This was a retrospective observational single-center study. All data of computed tomography pulmonary angiography （CTPA） performed over 6-year period on adult patients with clinically suspected pulmonary embolism were analyzed. Results： From January 2008 until December 2013, PE was identified in 423 of 3141 patients （13.5%） with clinically suspected pulmonary embolism who underwent CTPA, The incidence of PE in patients with pulmonary embolism （19.9%） was significantly higher than in those without embolism （9.4%） （P 〈 0.001 ）. Majority of PEs in pulmonary embolism patients were small to moderate and were unilateral. The locations of emboli and the numbers of arteries involved, CT pulmonary obstruction index, and parenchymal abnormalities at CT were not associated with the development of PE, Conclusions： PEs are present in about one fifth of a Chinese population of patients with pulmonary embolism, which are usually small, unilateral, and unsuitable for diagnostic thoracentesis.
基金Supported by National Natural Science Foundation of China(No.81570830)
文摘AIM: To investigate microvascular changes in eyes with central retinal vein occlusion(CRVO) complicated by macular edema before and after intravitreal conbercept injection and evaluate correlations between these changes and best-corrected visual acuity(BCVA) and retinal thickness. METHODS: Twenty-eight eyes of 28 patients with macular edema caused by CRVO were included in this retrospective study. All patients received a single intravitreal conbercept injection to treat macular edema. BCVA and the results of optical coherence tomography angiography(OCTA) automatic measurements of the vessel density in the superficial(SCP) and deep retinal capillary plexus(DCP), the foveal avascular zone(FAZ) area, the FAZ perimeter(PERIM), the vessel density within a 300-μm wide ring surrounding the FAZ(FD-300), the acircularity index(AI), the choriocapillaris flow area, and retinal thickness were recorded before and at one month after treatment and compared with the results observed in age-and sexmatched healthy subjects. RESULTS: The vessel density in the SCP and DCP, the FD-300, and the flow area of the choriocapillaris were allsignificantly lower in CRVO eyes than in healthy eyes, while the AI and retinal thickness were significantly higher(all P<0.05). After treatment, retinal thickness was significantly decreased, and the mean BCVA had markedly improved from 20/167 to 20/65(P=0.0092). The flow area of the choriocapillaris was also significantly improved, which may result from the reduction of shadowing effect caused by the attenuation of macular edema. However, there were no significant changes in SCP and DCP vessel density after treatment. The flow area of the choriocapillaris at baseline was negatively correlated with retinal thickness.CONCLUSION: OCTA enables the non-invasive, layerspecific and quantitative assessment of microvascular changes both before and after treatment, and can therefore be used as a valuable imaging tool for the evaluation of the follow-up in CRVO patients.
文摘目的根据白术Atractylodis Macrocephalae Rhizoma指纹图谱形状特征,建立一种快速精准辨识不同产地与炮制品的方法。方法建立45批不同产地与炮制法的白术UPLC指纹图谱库,运用总量统计矩及相似度法、正交偏最小二乘-判别分析(orthogonal partial least squares-discriminant analysis,OPLS-DA)法辨析此指纹图谱的形状特点,捕获其特征指纹图谱及特征峰。结果生品、麸炒、土炒白术UPLC指纹图谱的共有峰16个;安徽与湖南、安徽与浙江、湖南与浙江产地的生白术的总量统计矩相似度分别为0.774~0.982、0.799~0.969、0.788~0.886;3产地的生品与麸炒、生品与土炒、麸炒与土炒白术的总量统计矩相似度中最大值为0.990, 最小值为0.774。再结合OPLS-DA法中变量重要性投影(variable importance for the projection,VIP)分析获得其中1~3、6、16号为区分贡献度最大的5个标志峰,确认6号峰为白术内酯II。结论这5个标志峰对应物质可认定白术的潜在质量标志物(Q-Marker),为白术的产地、炮制法的精准识别及其质量控制与评价提供理论与实验依据,同时也为中药指纹图谱辨形论质做了积极探索。
基金National Natural Science Foundation of China, No. 30750013Natural Science Foundation of Fujian Province, No. X0650091
文摘AIM: To study the role of mitochondrial energy disorder in the pathogenesis of ethanol-induced gastric mucosa injury. METHODS: Wistar rats were used in this study. A gastric mucosal injury model was established by giving the rats alcohol. Gross and microscopic appearance of gastric mucosa and ultrastructure of mitochondria were evaluated. Malondiadehyde (MDA) in gastric mucosa was measured with thiobarbituric acid. Expression of ATP synthase (ATPase) subunits 6 and 8 in mitochondrial DNA (mtDNA) was determined by reverse transcription polymerase chain reaction (RT- PCR). RESULTS:The gastric mucosal lesion index was correlated with the MDA content in gastric mucosa. As the concentration of ethanol was elevated and theexposure time to ethanol was extended, the content of MDA in gastric mucosa increased and the extent of damage aggravated. The ultrastructure of mitochondria was positively related to the ethanol concentration and exposure time. The expression of mtDNA ATPase subunits 6 and 8 mRNA declined with the increasing MDA content in gastric mucosa after gavage with ethanol. CONCLUSION: Ethanol-induced gastric mucosa injury is related to oxidative stress, which disturbs energy metabolism of mitochondria and plays a critical role in the pathogenesis of ethanol-induced gastric mucosa injury.
基金Supported by the National Natural Science Foundation of China(No.81774141 and No.82074418)。
文摘Objective To investigate whether Lingbao Huxin Pill(LBHX)protects against acute myocardial infarction(AMI)at the infarct border zone(IBZ)of myocardial tissue by regulating apoptosis and inflammation through the sirtuin 1(SIRT1)-mediated forkhead box protein O1(FOXO1)and nuclear factor-κB(NF-κB)signaling pathways.Methods Six-week-old Wistar rats with normal diet were randomized into the sham,the model,Betaloc(0.9 mg/kg daily),LBHX-L(0.45 mg/kg daily),LBHX-M(0.9 mg/kg daily),LBHX-H(1.8 mg/kg daily),and LBHX+EX527(0.9 mg/kg daily)groups according to the method of random number table,13 in each group.In this study,left anterior descending coronary artery(LADCA)ligation was performed to induce an AMI model in rats.The myocardial infarction area was examined using a 2,3,5-triphenyltetrazolium chloride solution staining assay.A TdT-mediated dUTP nick-end labeling(TUNEL)assay was conducted to assess cardiomyocyte apoptosis in the IBZ.The histopathology of myocardial tissue at the IBZ was assessed with Heidenhain,Masson and hematoxylineosin(HE)staining assays.The expression levels of tumor necrosis factorα(TNF-α),interleukin(IL)-6,IL-1β,and intercellular adhesion molecule-1 were measured using enzyme-linked immunosorbent assays(ELISAs).The mRNA expressions of SIRT1 and FOXO1 were detected by real-time qPCR(RT-qPCR).The protein expressions of SIRT1,FOXO1,SOD2,BAX and NF-κB p65 were detected by Western blot analysis.Results The ligation of the LADCA successfully induced an AMI model.The LBHX pretreatment reduced the infarct size in the AMI rats(P<0.01).The TUNEL assay revealed that LBHX inhibited cardiomyocyte apoptosis at the IBZ.Further,the histological examination showed that the LBHX pretreatment decreased the ischemic area of myocardial tissue(P<0.05),myocardial interstitial collagen deposition(P<0.05)and inflammation at the IBZ.The ELISA results indicated that LBHX decreased the serum levels of inflammatory cytokines in the AMI rats(P<0.05 or P<0.01).Furthermore,Western blot analysis revealed that the LBHX pretr
文摘目的研究土家族药物扣子七Panax japonicus var. major中三萜皂苷类成分,对其抑制肿瘤细胞增殖活性进行筛选,并初步探讨化合物结构与活性的关系。方法应用多种色谱方法对土家族药物扣子七正丁醇部位进行分离,所分离化合物运用核磁共振方法进行结构鉴定,应用MTT法测定分离化合物对体外培养人肿瘤细胞增殖的影响。结果从扣子七根茎正丁醇部位分离得到14个三萜皂苷,分别鉴定为竹节参皂苷IVa甲酯(1)、竹节参皂苷Ⅳa丁酯(2)、竹节参皂苷Ⅳ(3)、竹节参皂苷Ⅳa(4)、28-去糖竹节参皂苷Ⅳa(5)、齐墩果酸-3-O-β-D-(6′-甲酯)-吡喃葡萄糖醛酸苷(6)、(24R)-珠子参苷R1(7)、(24R)-拟人参皂苷F11(8)、(20S)-三七皂苷R2(9)、(20S)-人参皂苷Rg2(10)、人参皂苷Rg1(11)、人参皂苷Re(12)、人参皂苷Rd(13)、竹节参皂苷V甲酯(14)。活性研究结果显示,化合物5和6对胃癌BGC-823细胞、结肠癌HCT-116细胞、宫颈癌HeLa细胞及肝癌Hep G2细胞均显示了较强的活性,呈良好的剂量依赖关系,其中化合物5对BGC-823、HCT-116细胞的IC50分别为9.94、14.17μmol/L,化合物6对肝癌HepG2细胞的抑制作用最强(IC50=12.70μmol/L)。结论首次从扣子七中分离得到化合物6并报道了其光谱数据;其部分化学成分显示出抗肿瘤活性,其抗肿瘤活性与齐墩果烷型皂苷密切相关,且活性强弱可能与C-28取代基有关联,相关抗肿瘤机制值得进一步研究。
基金Supported by Xi’an Health Commission Residential Training Base Construction Project,No.2023zp09.
文摘BACKGROUND Acute non-variceal upper gastrointestinal bleeding(ANVUGIB)constitutes a prevalent emergency within Gastroenterology,encompassing 80%-90%of all gastrointestinal hemorrhage incidents.This condition is distinguished by its abrupt onset,swift progression,and notably elevated mortality rate.AIM To gather clinical data from patients with ANVUGIB at our hospital in order to elucidate the clinical characteristics specific to our institution and analyze the therapeutic effectiveness of endoscopic hemostasis.METHODS We retrospectively retrieved the records of 532 patients diagnosed with ANVUGIB by endoscopy at our hospital between March 2021 and March 2023,utilizing our medical record system.Data pertaining to general patient information,etiological factors,disease outcomes,and other relevant variables were meticulously collected and analyzed.RESULTS Among the 532 patients diagnosed with ANVUGIB,the male-to-female ratio was 2.91:1,with a higher prevalence among males.Notably,43.6%of patients presented with black stool as their primary complaint,while 27.4%had hematemesis as their initial symptom.Upon admission,17%of patients exhibited both hematemesis and black stool,while most ANVUGIB patients primarily complained of overt gastrointestinal bleeding.Urgent routine blood examinations at admission revealed that 75.8%of patients had anemia,with 63.4%experiencing moderate to severe anemia,and 1.5%having extremely severe anemia(hemoglobin<30 g/L).With regard to etiology,53.2%of patients experienced bleeding without a definitive trigger,24.2%had a history of using gastric mucosa-irritating medications,24.2%developed bleeding after alcohol consumption,2.8%attributed it to improper diet,1.7%to emotional excitement,and 2.3%to fatigue preceding the bleeding episode.Drug-induced ANVUGIB was more prevalent in the elderly than middle-aged and young individuals,while bleeding due to alcohol consumption showed the opposite trend.Additionally,diet-related bleeding was more common among the young age group compared to the middl
