本研究旨在建立一种可一次性区分牛支原体、丝状支原体丝状亚种小克隆和无乳支原体的三重PCR诊断方法,为临床诊断和流行病学调查提供可靠检测技术。根据GenBank发表的上述3种病原的基因组序列保守区域设计3对特异性引物建立三重PCR方法...本研究旨在建立一种可一次性区分牛支原体、丝状支原体丝状亚种小克隆和无乳支原体的三重PCR诊断方法,为临床诊断和流行病学调查提供可靠检测技术。根据GenBank发表的上述3种病原的基因组序列保守区域设计3对特异性引物建立三重PCR方法;确定其检测敏感性,以猪支原体、鸡支原体、无乳支原体和丝状支原体丝状亚种小克隆基因作模板检验其特异性;同时和病原分离鉴定结果对比其准确性。结果表明在优化体系和条件下能够同时得到扩增长度为448、549、375 bp 3条特异性片段,未扩增出猪、鸡支原体模板特异性片段;其敏感性(可检测到的最小模板DNA含量)为0.8 ng.μL-1;36份临床样品检测结果显示,三重PCR检测结果与分离培养鉴定方法一致,均能鉴定出牛支原体阳性病料。本研究建立的三重PCR诊断方法能够一次性鉴别3种支原体,具有高敏感性、特异性和准确性,可用于临床诊断和流行病学调查。展开更多
AIM:To explore the interventional effects and mechanism of in vitro cultivated Calculus Bovis compound preparation(ICCBco) on pulmonary lesions in portal hypertensive rabbits with schistosomiasis. METHODS:The experime...AIM:To explore the interventional effects and mechanism of in vitro cultivated Calculus Bovis compound preparation(ICCBco) on pulmonary lesions in portal hypertensive rabbits with schistosomiasis. METHODS:The experimental group included 20 portal hypertensive rabbits with schistosomiasis treated by ICCBco.The control group included 20 portal hypertensive rabbits with schistosomiasis treated by praziquantel. The morphological changes of the pulmonary tissues were observed under light and electron microscopy.The expression of fibronectin(FN) and laminin(LN) in the lung tissues was analyzed by immunohistochemistry. RESULTS:Under light microscope,the alveolar exudation in the lung tissue was more frequently observed in the control group,while the alveolar space was fairly dry in the lung tissue of ICCBco group.Under electron microscope,more alveolar exudation in the lung tissue,and moremacrophages,alveolar angiotelectasis and the blurred three-tier structure of alveolar-capillary barrier could be seen in the control group.In ICCBco group,fibers within the alveolar interspace slightly increased in some lung regions,and the structure of typeⅠepithelium,basement membrane and endodermis was complete,and no obvious exudation from the alveolar space,and novascular congestion could be observed.There was a positive or strong positive expression of FN and LN in the lung tissue of the control group,while there was a negative or weak positive expression of FN and LN in ICCBco group. CONCLUSION:ICCBco can effectively prevent pulmonary complications in portal hypertensive rabbits with schistosomiasis by means of improving lung microcirculation and lowering the content of extracellular matrix.展开更多
AIM:To prospectively examine the association between presence of Streptococcus bovis(S.bovis)in colonic suction fluid and the endoscopic findings on colonoscopy.METHODS:From May 2012 to March 2013,203 consecutivepatie...AIM:To prospectively examine the association between presence of Streptococcus bovis(S.bovis)in colonic suction fluid and the endoscopic findings on colonoscopy.METHODS:From May 2012 to March 2013,203 consecutivepatients who underwent colonoscopy for any reason were enrolled in the study.Exclusion criteria included:antibiotic use in the previous month,age younger than18 years,and inadequate preparation for colonoscopy.The colonoscopy was performed for the total length of the colon or to the occluding tumor.The endoscopic findings were registered.Samples were obtained proximal to the colonoscopic part of the suction tube from each patient and sent to the clinical microbiology laboratory for isolation and identification of S.bovis.Samples were incubated in enrichment media with addition of antibiotic disks for inhibition of growth of Gram-negative rods.The samples were seeded on differential growth media;suspected positive colonies were isolated and identified with Gram staining,catalase,and pyrrolidonyl arylamidase tests,and further identified using a VITEK2 system.Statistical analyses were performed using the Student’s t andχ2 tests.RESULTS:Of the 203 patients recruited,49(24%)patients were found to be S.bovis carriers;of them,the endoscopic findings included:17(34.7%)cases with malignant tumors,11(22.4%)with large polyps,5(10.2%)with medium-sized polyps,6(12.2%)with small polyps,4(8.1%)with colitis,and 6(12.2%)normal colonoscopies.Of 154 patients found negative for S.bovis,the endoscopic findings included:none with malignant tumors,9(5.8%)cases with large polyps,11(7.1%)with medium-sized polyps,26(16.9%)with small polyps,7(4.5%)with colitis,and101(65.6%)normal colonoscopies.S.bovis(Grampositive coccus)is considered part of the normal intestinal flora.There is an association between S.bovis bacteremia and colonic neoplasia.It is not well understood whether the bacterium has a pathogenetic role in the development of neoplasia or constitutes an epiphenomenon of colorectal neoplasms.There was a clear relationship展开更多
Bovine tuberculosis (bTB) is an endemic zoonosis significantly affects animal health in Burkina Faso. The primary causative agent is Mycobacterium tuberculosis (M. tuberculosis) complex, mainly M. bovis. Cattle are co...Bovine tuberculosis (bTB) is an endemic zoonosis significantly affects animal health in Burkina Faso. The primary causative agent is Mycobacterium tuberculosis (M. tuberculosis) complex, mainly M. bovis. Cattle are considered as natural reservoir of M. bovis. However, in Burkina Faso, the circulation of these strains remains poorly understood and documented. This study aimed to identify and characterize Mycobacterium strains from suspected carcasses during routine meat inspection at Bobo-Dioulasso refrigerated slaughterhouse. A prospective cross-sectional study was conducted from January 2021 to December 2022 on cases of seizures linked to suspected bovine tuberculosis. Microbiological and molecular analyzes were used for mycobacterial strain isolation and characterization. Out of 50 samples, 24% tested positive by microscopy and 12% by culture. Molecular analysis identified 6 strains of Mycobacteria, exclusively Mycobacterium bovis specifically the subspecies bovis (Mycobacterium bovis subsp bovis). In conclusion, M. bovis subsp bovis is the primary agent responsible for bovine tuberculosis in Bobo-Dioulasso. Continuous monitoring of mycobacterial strains is therefore necessary for the effective control of this pathology in the local cattle population.展开更多
BACKGROUND Calculus bovis(CB),used in traditional Chinese medicine,exhibits anti-tumor effects in various cancer models.It also constitutes an integral component of a compound formulation known as Pien Tze Huang,which...BACKGROUND Calculus bovis(CB),used in traditional Chinese medicine,exhibits anti-tumor effects in various cancer models.It also constitutes an integral component of a compound formulation known as Pien Tze Huang,which is indicated for the treatment of liver cancer.However,its impact on the liver cancer tumor microenvironment,particularly on tumor-associated macrophages(TAMs),is not well understood.AIM To elucidate the anti-liver cancer effect of CB by inhibiting M2-TAM polarization via Wnt/β-catenin pathway modulation.METHODS This study identified the active components of CB using UPLC-Q-TOF-MS,evaluated its anti-neoplastic effects in a nude mouse model,and elucidated the underlying mechanisms via network pharmacology,transcriptomics,and molecular docking.In vitro assays were used to investigate the effects of CB-containing serum on HepG2 cells and M2-TAMs,and Wnt pathway modulation was validated by real-time reverse transcriptase-polymerase chain reaction and Western blot analysis.RESULTS This study identified 22 active components in CB,11 of which were detected in the bloodstream.Preclinical investigations have demonstrated the ability of CB to effectively inhibit liver tumor growth.An integrated approach employing network pharmacology,transcriptomics,and molecular docking implicated the Wnt signaling pathway as a target of the antineoplastic activity of CB by suppressing M2-TAM polarization.In vitro and in vivo experiments further confirmed that CB significantly hinders M2-TAM polarization and suppresses Wnt/β-catenin pathway activation.The inhibitory effect of CB on M2-TAMs was reversed when treated with the Wnt agonist SKL2001,confirming its pathway specificity.CONCLUSION This study demonstrated that CB mediates inhibition of M2-TAM polarization through the Wnt/β-catenin pathway,contributing to the suppression of liver cancer growth.展开更多
Objective Due to the limited resource and the large demand,many kinds of Bovis Calculus(BC) including artificial Bovis Calculus(ABC),in vivo cultured Bovis Calculus(in vivo CBC),and in vitro cultured Bovis Calculus(in...Objective Due to the limited resource and the large demand,many kinds of Bovis Calculus(BC) including artificial Bovis Calculus(ABC),in vivo cultured Bovis Calculus(in vivo CBC),and in vitro cultured Bovis Calculus(in vitro CBC)were used in Chinese patent medicines(CPMs).Previous studies have shown that the chemical constituents of ABC and their properties were different from other BC.The two types of CBC with much higher price than ABC were approximately equivalent with natural Bovis Calculus in quality and clinical effect.The aim of the study is to establish a rapid and effective method for the identification of BC in CPMs.Methods An HPLC method with the higher specificity for analyzing bilirubin was established to distinguish ABC from other three kinds of BC by comparing the change of bilirubin content with the addition of EDTA-2Na as the extraction solvent and stabilizer.Results The bilirubin content in CPMs containing ABC was basically unchanged,while that in CPMs containing other kinds of BC showed significant difference.The proposed method was employed to analyze a variety of CPMs containing Bovis Calculus(CPMBCs) and proven to be universal.Conclusion An effective analytical method is established for the quality control of CPMBCs and further ensures the safety and efficacy of these drugs in clinical practice.展开更多
This editorial examines the therapeutic potential of traditional Chinese medicine(TCM)for aggressive cancers,particularly liver cancer.It highlights the study by Huang et al,which shows how Calculus bovis,a component ...This editorial examines the therapeutic potential of traditional Chinese medicine(TCM)for aggressive cancers,particularly liver cancer.It highlights the study by Huang et al,which shows how Calculus bovis,a component of the TCM Pien Tze Huang,suppresses liver cancer by inhibiting M2 macrophage polarization via the Wnt/β-catenin pathway.This research emphasizes the importance of transitioning from effective TCM formulations to isolating active components and understanding their mechanisms.While the study provides valuable insights,it primarily focuses on the Wnt/β-catenin pathway and does not delve deeply into the mechanisms of individual components.Future research should aim to comprehensively study these components,explore their interactions,and validate findings through clinical trials.This approach will integrate traditional wisdom with modern scientific validation,advancing the development of innovative cancer treatments based on TCM formulations.展开更多
Bladder cancer encapsulates a wide spectrum of disease severities,with non-muscle invasive bladder cancer(NMIBC)representing an entirely different entity from muscle-invasive disease.Bacillus Calmette-Guerin(BCG)is on...Bladder cancer encapsulates a wide spectrum of disease severities,with non-muscle invasive bladder cancer(NMIBC)representing an entirely different entity from muscle-invasive disease.Bacillus Calmette-Guerin(BCG)is one of the most successful intravesical treatment methods for patients diagnosed.However,a considerable pro-portion of patients fail to respond to BCG treatment.Given the propensity for recurrence in patients with high-risk bladder cancer,these patients present with surgical dilemmas.There is currently no gold standard for salvage treatment post-BCG failure or unified definition as to what that means.In this review,we discuss the mechanisms of action and pathophysiology of BCG,potential theories behind BCG failure,and the scope of novel treatments forthis surgical conundrum.展开更多
文摘本研究旨在建立一种可一次性区分牛支原体、丝状支原体丝状亚种小克隆和无乳支原体的三重PCR诊断方法,为临床诊断和流行病学调查提供可靠检测技术。根据GenBank发表的上述3种病原的基因组序列保守区域设计3对特异性引物建立三重PCR方法;确定其检测敏感性,以猪支原体、鸡支原体、无乳支原体和丝状支原体丝状亚种小克隆基因作模板检验其特异性;同时和病原分离鉴定结果对比其准确性。结果表明在优化体系和条件下能够同时得到扩增长度为448、549、375 bp 3条特异性片段,未扩增出猪、鸡支原体模板特异性片段;其敏感性(可检测到的最小模板DNA含量)为0.8 ng.μL-1;36份临床样品检测结果显示,三重PCR检测结果与分离培养鉴定方法一致,均能鉴定出牛支原体阳性病料。本研究建立的三重PCR诊断方法能够一次性鉴别3种支原体,具有高敏感性、特异性和准确性,可用于临床诊断和流行病学调查。
基金Supported by National Natural Science Foundation of China,No.A30170920
文摘AIM:To explore the interventional effects and mechanism of in vitro cultivated Calculus Bovis compound preparation(ICCBco) on pulmonary lesions in portal hypertensive rabbits with schistosomiasis. METHODS:The experimental group included 20 portal hypertensive rabbits with schistosomiasis treated by ICCBco.The control group included 20 portal hypertensive rabbits with schistosomiasis treated by praziquantel. The morphological changes of the pulmonary tissues were observed under light and electron microscopy.The expression of fibronectin(FN) and laminin(LN) in the lung tissues was analyzed by immunohistochemistry. RESULTS:Under light microscope,the alveolar exudation in the lung tissue was more frequently observed in the control group,while the alveolar space was fairly dry in the lung tissue of ICCBco group.Under electron microscope,more alveolar exudation in the lung tissue,and moremacrophages,alveolar angiotelectasis and the blurred three-tier structure of alveolar-capillary barrier could be seen in the control group.In ICCBco group,fibers within the alveolar interspace slightly increased in some lung regions,and the structure of typeⅠepithelium,basement membrane and endodermis was complete,and no obvious exudation from the alveolar space,and novascular congestion could be observed.There was a positive or strong positive expression of FN and LN in the lung tissue of the control group,while there was a negative or weak positive expression of FN and LN in ICCBco group. CONCLUSION:ICCBco can effectively prevent pulmonary complications in portal hypertensive rabbits with schistosomiasis by means of improving lung microcirculation and lowering the content of extracellular matrix.
文摘AIM:To prospectively examine the association between presence of Streptococcus bovis(S.bovis)in colonic suction fluid and the endoscopic findings on colonoscopy.METHODS:From May 2012 to March 2013,203 consecutivepatients who underwent colonoscopy for any reason were enrolled in the study.Exclusion criteria included:antibiotic use in the previous month,age younger than18 years,and inadequate preparation for colonoscopy.The colonoscopy was performed for the total length of the colon or to the occluding tumor.The endoscopic findings were registered.Samples were obtained proximal to the colonoscopic part of the suction tube from each patient and sent to the clinical microbiology laboratory for isolation and identification of S.bovis.Samples were incubated in enrichment media with addition of antibiotic disks for inhibition of growth of Gram-negative rods.The samples were seeded on differential growth media;suspected positive colonies were isolated and identified with Gram staining,catalase,and pyrrolidonyl arylamidase tests,and further identified using a VITEK2 system.Statistical analyses were performed using the Student’s t andχ2 tests.RESULTS:Of the 203 patients recruited,49(24%)patients were found to be S.bovis carriers;of them,the endoscopic findings included:17(34.7%)cases with malignant tumors,11(22.4%)with large polyps,5(10.2%)with medium-sized polyps,6(12.2%)with small polyps,4(8.1%)with colitis,and 6(12.2%)normal colonoscopies.Of 154 patients found negative for S.bovis,the endoscopic findings included:none with malignant tumors,9(5.8%)cases with large polyps,11(7.1%)with medium-sized polyps,26(16.9%)with small polyps,7(4.5%)with colitis,and101(65.6%)normal colonoscopies.S.bovis(Grampositive coccus)is considered part of the normal intestinal flora.There is an association between S.bovis bacteremia and colonic neoplasia.It is not well understood whether the bacterium has a pathogenetic role in the development of neoplasia or constitutes an epiphenomenon of colorectal neoplasms.There was a clear relationship
文摘Bovine tuberculosis (bTB) is an endemic zoonosis significantly affects animal health in Burkina Faso. The primary causative agent is Mycobacterium tuberculosis (M. tuberculosis) complex, mainly M. bovis. Cattle are considered as natural reservoir of M. bovis. However, in Burkina Faso, the circulation of these strains remains poorly understood and documented. This study aimed to identify and characterize Mycobacterium strains from suspected carcasses during routine meat inspection at Bobo-Dioulasso refrigerated slaughterhouse. A prospective cross-sectional study was conducted from January 2021 to December 2022 on cases of seizures linked to suspected bovine tuberculosis. Microbiological and molecular analyzes were used for mycobacterial strain isolation and characterization. Out of 50 samples, 24% tested positive by microscopy and 12% by culture. Molecular analysis identified 6 strains of Mycobacteria, exclusively Mycobacterium bovis specifically the subspecies bovis (Mycobacterium bovis subsp bovis). In conclusion, M. bovis subsp bovis is the primary agent responsible for bovine tuberculosis in Bobo-Dioulasso. Continuous monitoring of mycobacterial strains is therefore necessary for the effective control of this pathology in the local cattle population.
基金Supported by National Natural Science Foundation of China,No.82074450Education Department of Hunan Province,No.21A0243,No.21B0374,No.22B0397,and No.22B0392+2 种基金Research Project of"Academician Liu Liang Workstation"of Hunan University of Traditional Chinese Medicine,No.21YS003Hunan Administration of Traditional Chinese Medicine,No.B2023001 and No.B2023009Hunan Provincial Natural Science Foundation of China,No.2023JJ40481。
文摘BACKGROUND Calculus bovis(CB),used in traditional Chinese medicine,exhibits anti-tumor effects in various cancer models.It also constitutes an integral component of a compound formulation known as Pien Tze Huang,which is indicated for the treatment of liver cancer.However,its impact on the liver cancer tumor microenvironment,particularly on tumor-associated macrophages(TAMs),is not well understood.AIM To elucidate the anti-liver cancer effect of CB by inhibiting M2-TAM polarization via Wnt/β-catenin pathway modulation.METHODS This study identified the active components of CB using UPLC-Q-TOF-MS,evaluated its anti-neoplastic effects in a nude mouse model,and elucidated the underlying mechanisms via network pharmacology,transcriptomics,and molecular docking.In vitro assays were used to investigate the effects of CB-containing serum on HepG2 cells and M2-TAMs,and Wnt pathway modulation was validated by real-time reverse transcriptase-polymerase chain reaction and Western blot analysis.RESULTS This study identified 22 active components in CB,11 of which were detected in the bloodstream.Preclinical investigations have demonstrated the ability of CB to effectively inhibit liver tumor growth.An integrated approach employing network pharmacology,transcriptomics,and molecular docking implicated the Wnt signaling pathway as a target of the antineoplastic activity of CB by suppressing M2-TAM polarization.In vitro and in vivo experiments further confirmed that CB significantly hinders M2-TAM polarization and suppresses Wnt/β-catenin pathway activation.The inhibitory effect of CB on M2-TAMs was reversed when treated with the Wnt agonist SKL2001,confirming its pathway specificity.CONCLUSION This study demonstrated that CB mediates inhibition of M2-TAM polarization through the Wnt/β-catenin pathway,contributing to the suppression of liver cancer growth.
文摘Objective Due to the limited resource and the large demand,many kinds of Bovis Calculus(BC) including artificial Bovis Calculus(ABC),in vivo cultured Bovis Calculus(in vivo CBC),and in vitro cultured Bovis Calculus(in vitro CBC)were used in Chinese patent medicines(CPMs).Previous studies have shown that the chemical constituents of ABC and their properties were different from other BC.The two types of CBC with much higher price than ABC were approximately equivalent with natural Bovis Calculus in quality and clinical effect.The aim of the study is to establish a rapid and effective method for the identification of BC in CPMs.Methods An HPLC method with the higher specificity for analyzing bilirubin was established to distinguish ABC from other three kinds of BC by comparing the change of bilirubin content with the addition of EDTA-2Na as the extraction solvent and stabilizer.Results The bilirubin content in CPMs containing ABC was basically unchanged,while that in CPMs containing other kinds of BC showed significant difference.The proposed method was employed to analyze a variety of CPMs containing Bovis Calculus(CPMBCs) and proven to be universal.Conclusion An effective analytical method is established for the quality control of CPMBCs and further ensures the safety and efficacy of these drugs in clinical practice.
基金Supported by National Natural Science Foundation of China,No.82204909.
文摘This editorial examines the therapeutic potential of traditional Chinese medicine(TCM)for aggressive cancers,particularly liver cancer.It highlights the study by Huang et al,which shows how Calculus bovis,a component of the TCM Pien Tze Huang,suppresses liver cancer by inhibiting M2 macrophage polarization via the Wnt/β-catenin pathway.This research emphasizes the importance of transitioning from effective TCM formulations to isolating active components and understanding their mechanisms.While the study provides valuable insights,it primarily focuses on the Wnt/β-catenin pathway and does not delve deeply into the mechanisms of individual components.Future research should aim to comprehensively study these components,explore their interactions,and validate findings through clinical trials.This approach will integrate traditional wisdom with modern scientific validation,advancing the development of innovative cancer treatments based on TCM formulations.
文摘Bladder cancer encapsulates a wide spectrum of disease severities,with non-muscle invasive bladder cancer(NMIBC)representing an entirely different entity from muscle-invasive disease.Bacillus Calmette-Guerin(BCG)is one of the most successful intravesical treatment methods for patients diagnosed.However,a considerable pro-portion of patients fail to respond to BCG treatment.Given the propensity for recurrence in patients with high-risk bladder cancer,these patients present with surgical dilemmas.There is currently no gold standard for salvage treatment post-BCG failure or unified definition as to what that means.In this review,we discuss the mechanisms of action and pathophysiology of BCG,potential theories behind BCG failure,and the scope of novel treatments forthis surgical conundrum.
