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Antiviral therapy for hepatitis B virus infection is beneficial for the prognosis hepatocellular carcinoma
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作者 Hui Wan Yu-Xin Zhang +5 位作者 Guan-Yue Shan Jun-Ya Cheng Duan-Rui Qiao Yi-Ying Liu Wen-Na Shi Hai-Jun Li 《World Journal of Gastrointestinal Oncology》 SCIE 2025年第1期1-9,共9页
In this editorial,we comment on the article by Mu et al,published in the recent issue of the World Journal of Gastrointestinal Oncology.We pay special attention to the immune tolerance mechanism caused by hepatitis B ... In this editorial,we comment on the article by Mu et al,published in the recent issue of the World Journal of Gastrointestinal Oncology.We pay special attention to the immune tolerance mechanism caused by hepatitis B virus(HBV)infection,the pathogenesis of hepatocellular carcinoma(HCC),and the role of antiviral therapy in treating HCC related to HBV infection.HBV infection leads to systemic innate immune tolerance by directly inhibiting pattern recognition receptor recognition and antiviral signaling pathways,as well as by inhibiting the immune functions of macrophages,natural killer cells and dendritic cells.In addition,HBV leads to an immunosuppressive cascade by expressing inhibitory molecules to induce exhaustion of HBV-specific cluster of differentiation 8+T cells,ultimately leading to long-term viral infection.The loss of immune cell function caused by HBV infection ultimately leads to HCC.Long-term antiviral therapy can improve the prognosis of patients with HCC and prevent tumor recurrence and metastasis. 展开更多
关键词 Hepatitis B virus Hepatocellular carcinoma Hepatitis B virus-DNA Immune tolerance Antiviral therapy
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Crimean-Congo hemorrhagic fever:Pathogenesis,transmission and public health challenges
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作者 Sita Kumari Karanam Kandra Nagvishnu +2 位作者 Praveen Kumar Uppala Sandhya Edhi Srinivasa Rao Varri 《World Journal of Virology》 2025年第1期63-72,共10页
The dangerous Crimean-Congo hemorrhagic fever virus(CCHFV),an encapsulated negative-sense RNA virus of the family Nairoviridae,is transmitted from person to person via ticks.With a case fatality rate between 10%to 40%... The dangerous Crimean-Congo hemorrhagic fever virus(CCHFV),an encapsulated negative-sense RNA virus of the family Nairoviridae,is transmitted from person to person via ticks.With a case fatality rate between 10%to 40%,the most common ways that the disease may spread to humans are via tick bites or coming into touch with infected animals'blood or tissues.Furthermore,the transfer of bodily fluids between individuals is another potential route of infection.There is a wide range of symptoms experienced by patients throughout each stage,from myalgia and fever to extreme bruising and excess bleeding.Tick management measures include minimising the spread of ticks from one species to another and from people to animals via the use of protective clothing,repellents,and proper animal handling.In order to prevent the spread of illness,healthcare workers must adhere to stringent protocols.Despite the lack of an authorised vaccine,the main components of treatment now consist of preventative measures and supportive care,which may include the antiviral medicine ribavirin.We still don't know very much about the virus's mechanisms,even though advances in molecular virology and animal models have improved our understanding of the pathogenesis of CCHFV.A critical need for vaccination that is both safe and effective,as well as for quick diagnosis and efficient treatments to lessen the disease's impact in areas where it is most prevalent.Important steps towards lowering Crimean-Congo hemorrhagic fever mortality and morbidity rates were to anticipatethe future availability of immunoglobulin products. 展开更多
关键词 Crimean-congo haemorrhagic fever Tick-borne illness IMMUNOGLOBULINS Viral hemorrhagic fever Antiviral therapy
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Clinical features of abnormalα-fetoprotein in 15 patients with chronic viral hepatitis B after treatment with antiviral drugs
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作者 Man-Lei Jiang Fei Xu +3 位作者 Jin-Long Li Jia-Yu Luo Jiang-Ling Hu Xian-Qiang Zeng 《World Journal of Hepatology》 2025年第1期47-54,共8页
BACKGROUND Liver function of chronic hepatitis B(CHB)patients is essentially normal after treatment with antiviral drugs.In rare cases,persistently abnormally elevatedα-fetoprotein(AFP)is seen in CHB patients followi... BACKGROUND Liver function of chronic hepatitis B(CHB)patients is essentially normal after treatment with antiviral drugs.In rare cases,persistently abnormally elevatedα-fetoprotein(AFP)is seen in CHB patients following long-term antiviral treatment.However,in the absence of imaging evidence of liver cancer,a reasonable expla-nation for this phenomenon is still lacking.AIM To explore the causes of abnormal AFP in patients with CHB who were not diag-nosed with liver cancer.METHODS From November 2019 to May 2023,15 patients with CHB after antiviral treatment and elevated AFP were selected.Clinical data and quality indicators related to laboratory testing,imaging data,and pathological data were obtained through inpatient medical records.RESULTS All patients had increased AFP and significantly elevated IgG.Cancer was excluded by imaging examination.Only four patients had elevated alanine ami-notransferase,10 had elevated aspartate aminotransferase,nine had elevated total bilirubin,and two had antinuclear antibodies.The liver biopsy and histopatho-logical examination indicated that 14 patients had rosette,moderate,or higher interfacial inflammation,lymphocyte infiltration,and severe hepatic fibers(11 cases),which was consistent with the pathological features of autoimmune hepa-titis(AIH).After 8-12 week of hormone therapy,the levels of AFP and IgG,and liver function returned to normal(P<0.05).CONCLUSION For patients with CHB and elevated AFP after antiviral treatment,autoimmune hepatitis should be considered.CHB with AIH is clinically insidious and difficult to detect,and prone to progression to cirrhosis.Liver puncture pathological examination should be performed when necessary to confirm diagnosis. 展开更多
关键词 Abnormalα-fetoprotein Chronic viral hepatitis B Antiviral treatment Autoimmune hepatitis Hepatic pathology
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Perioperative remedial antiviral therapy in hepatitis B virus-related hepatocellular carcinoma resection:How to achieve a better outcome 被引量:2
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作者 Fan Mu Liang-Shuo Hu +7 位作者 Kun Xu Zhen Zhao Bai-Cai Yang Yi-Meng Wang Kun Guo Jian-Hua Shi Yi Lv Bo Wang 《World Journal of Gastrointestinal Oncology》 SCIE 2024年第5期1833-1848,共16页
BACKGROUND Although the benefits of antiviral therapy for hepatitis B virus(HBV)-related hepatocellular carcinoma(HCC)have been proven,researchers have not con-firmed the differences in patient outcomes between patien... BACKGROUND Although the benefits of antiviral therapy for hepatitis B virus(HBV)-related hepatocellular carcinoma(HCC)have been proven,researchers have not con-firmed the differences in patient outcomes between patients who received preoperative antiviral therapy for a period of time(at least 24 wk)and patients who received remedial antiviral therapy just before radical resection for HBV-related HCC.AIM To investigate the efficacy of perioperative remedial antiviral therapy in patients with HBV-related HCC.METHODS A retrospective study of patients who underwent radical resection for HBV-related HCC at the First Affiliated Hospital of Xi’an Jiaotong University from January 2016 to June 2019 was conducted.Considering the history of antiviral therapy,patients were assigned to remedial antiviral therapy and preoperative antiviral therapy groups.RESULTS Kaplan–Meier analysis revealed significant differences in overall survival(P<0.0001)and disease-free survival(P=0.035)between the two groups.Multivariate analysis demonstrated that a history of preoperative antiviral treatment was independently related to improved survival(hazard ratio=0.27;95%confidence interval:0.08-0.88;P=0.030).CONCLUSION In patients with HBV-related HCC,it is ideal to receive preoperative long-term antiviral therapy,which helps patients tolerate more extensive hepatectomy;however,remedial antiviral therapy,which reduces preoperative HBV-DNA levels to less than 4 Log10 copies DNA/mL,can also result in improved outcomes. 展开更多
关键词 HEPATECTOMY Hepatitis B virus Antiviral therapy Hepatocellular carcinoma Hepatitis B virus-DNA
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Influence of nonalcoholic fatty liver disease on response to antiviral treatment in patients with chronic hepatitis B:A meta-analysis 被引量:2
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作者 Shi-Yi Liu Dian Wang +2 位作者 Jing Liu Lu-Ping Yang Gong-Ying Chen 《World Journal of Hepatology》 2024年第3期465-476,共12页
BACKGROUND Although hepatitis B virus infection is the leading cause of chronic liver injury globally,nonalcoholic fatty liver disease(NAFLD)is gradually gaining attention as another major chronic liver disease.The nu... BACKGROUND Although hepatitis B virus infection is the leading cause of chronic liver injury globally,nonalcoholic fatty liver disease(NAFLD)is gradually gaining attention as another major chronic liver disease.The number of patients having chronic hepatitis B(CHB)with concomitant hepatic steatosis has increased.AIM To analyze the effect of NAFLD on the response to antiviral treatment in patients with CHB.METHODS Relevant English studies were systematically searched across PubMed,EMBASE,Web of Science,and Cochrane Library until October 2023.Studies in which the treatment outcomes were compared between patients with CHB only and those with CHB and hepatic steatosis were included.RESULTS Of the 2502 retrieved studies,11 articles were finally included.Biochemical response until 48 wk(OR=0.87,95%CI:0.50–1.53,P=0.000)and 96 wk(OR=0.35,95%CI:0.24–0.53,P=0.24)and virological response until 96 wk(OR=0.80,95%CI:0.43–1.49,P=0.097)were lower in patients with hepatic steatosis than in patients with CHB alone.CONCLUSION Hepatic steatosis lowers the biochemical response to antiviral treatment in patients with CHB. 展开更多
关键词 Nonalcoholic fatty liver disease Hepatitis B virus Antiviral treatment EFFECT META-ANALYSIS
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Advances in Zika virus vaccines and therapeutics:A systematic review 被引量:1
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作者 Shiza Malik Khalid Muhammad +3 位作者 Omar Ahsan Muhammad Tahir Khan Ranjit Sah Yasir Waheed 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2024年第3期97-109,共13页
Zika virus(ZIKV)is the causative agent of a viral infection that causes neurological complications in newborns and adults worldwide.Its wide transmission route and alarming spread rates are of great concern to the sci... Zika virus(ZIKV)is the causative agent of a viral infection that causes neurological complications in newborns and adults worldwide.Its wide transmission route and alarming spread rates are of great concern to the scientific community.Numerous trials have been conducted to develop treatment options for ZIKV infection.This review highlights the latest developments in the fields of vaccinology and pharmaceuticals developments for ZIKV infection.A systematic and comprehensive approach was used to gather relevant and up-to-date data so that inferences could be made about the gaps in therapeutic development.The results indicate that several therapeutic interventions are being tested against ZIKV infection,such as DNA vaccines,subunit vaccines,live-attenuated vaccines,virus-vector-based vaccines,inactivated vaccines,virus-like particles,and mRNA-based vaccines.In addition,approved anti-ZIKV drugs that can reduce the global burden are discussed.Although many vaccine candidates for ZIKV are at different stages of development,none of them have received Food and Drug Authority approval for use up to now.The issue of side effects associated with these drugs in vulnerable newborns and pregnant women is a major obstacle in the therapeutic pathway. 展开更多
关键词 Zika virus Infection THERAPEUTICS Antiviral agents Vaccines THERAPIES Treatment Novel therapeutic Clinical management
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Predicting hepatocellular carcinoma: A new non-invasive model based on shear wave elastography 被引量:1
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作者 Dong Jiang Yi Qian +9 位作者 Yi-Jun Gu Ru Wang Hua Yu Hui Dong Dong-Yu Chen Yan Chen Hao-Zheng Jiang Bi-Bo Tan Min Peng Yi-Ran Li 《World Journal of Gastroenterology》 SCIE CAS 2024年第25期3166-3178,共13页
BACKGROUND Integrating conventional ultrasound features with 2D shear wave elastography(2D-SWE)can potentially enhance preoperative hepatocellular carcinoma(HCC)predictions.AIM To develop a 2D-SWE-based predictive mod... BACKGROUND Integrating conventional ultrasound features with 2D shear wave elastography(2D-SWE)can potentially enhance preoperative hepatocellular carcinoma(HCC)predictions.AIM To develop a 2D-SWE-based predictive model for preoperative identification of HCC.METHODS A retrospective analysis of 884 patients who underwent liver resection and pathology evaluation from February 2021 to August 2023 was conducted at the Oriental Hepatobiliary Surgery Hospital.The patients were divided into the modeling group(n=720)and the control group(n=164).The study included conventional ultrasound,2D-SWE,and preoperative laboratory tests.Multiple logistic regression was used to identify independent predictive factors for RESULTS In the modeling group analysis,maximal elasticity(Emax)of tumors and their peripheries,platelet count,cirrhosis,and blood flow were independent risk indicators for malignancies.These factors yielded an area under the curve of 0.77(95%confidence interval:0.73-0.81)with 84%sensitivity and 61%specificity.The model demonstrated good calibration in both the construction and validation cohorts,as shown by the calibration graph and Hosmer-Lemeshow test(P=0.683 and P=0.658,respectively).Additionally,the mean elasticity(Emean)of the tumor periphery was identified as a risk factor for microvascular invasion(MVI)in malignant liver tumors(P=0.003).Patients receiving antiviral treatment differed significantly in platelet count(P=0.002),Emax of tumors(P=0.033),Emean of tumors(P=0.042),Emax at tumor periphery(P<0.001),and Emean at tumor periphery(P=0.003).CONCLUSION 2D-SWE’s hardness value serves as a valuable marker for enhancing the preoperative diagnosis of malignant liver lesions,correlating significantly with MVI and antiviral treatment efficacy. 展开更多
关键词 Shear wave elastography Predicting model Microvascular invasion Antiviral treatment Hepatocellular carcinoma
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Antiviral treatment standards for hepatitis B:An urgent need for expansion 被引量:1
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作者 Zi-Hong Bao Zhi-Kun Dai Hao-Xian Tang 《World Journal of Gastroenterology》 SCIE CAS 2024年第4期418-420,共3页
The present letter to the editor is related to the review with the title“Past,present,and future of long-term treatment for hepatitis B virus.”Chronic hepatitis B(CHB)represents an important and pressing public heal... The present letter to the editor is related to the review with the title“Past,present,and future of long-term treatment for hepatitis B virus.”Chronic hepatitis B(CHB)represents an important and pressing public health concern.Timely identification and effective antiviral therapy hold the potential to reduce liver-related mortality attributable to chronic infection with hepatitis B virus(HBV)substantially.However,the current global treatment rates for CHB remain conspicuously low,with the excessively stringent treatment criteria advocated by national CHB guidelines being a contributing factor to these low rates.Nevertheless,recent strides in comprehending this malady and the emergence of novel antiviral agents prompt the imperative re-evaluation of treatment standards to extend the sphere of potential beneficiaries.An impending need arises for a novel paradigm for the classification of patients with CHB,the expansion of antiviral treatment eligibility for HBV-infected individuals,and even the streamlining of the diagnostic process for CHB to amplify cost-effectiveness and augment survival prospects. 展开更多
关键词 Hepatitis B virus Chronic hepatitis B Antiviral treatment criteria Serum alanine aminotransferase Liver-related mortality Letter to the Editor
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Inhibition of hepatitis B virus via selective apoptosis modulation by Chinese patent medicine Liuweiwuling Tablet
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作者 Fei-Lin Ge Yan Yang +7 位作者 Lan-Lan Si Yuan-Hua Li Meng-Zhen Cao Jun Wang Zhao-Fang Bai Zhi-Gang Ren Xiao-He Xiao Yan Liu 《World Journal of Gastroenterology》 SCIE CAS 2024年第13期1911-1925,共15页
BACKGROUND Liuweiwuling Tablet(LWWL)is a Chinese patent medicine approved for the treatment of chronic inflammation caused by hepatitis B virus(HBV)infection.Previous studies have indicated an anti-HBV effect of LWWL,... BACKGROUND Liuweiwuling Tablet(LWWL)is a Chinese patent medicine approved for the treatment of chronic inflammation caused by hepatitis B virus(HBV)infection.Previous studies have indicated an anti-HBV effect of LWWL,specifically in terms of antigen inhibition,but the underlying mechanism remains unclear.AIM To investigate the potential mechanism of action of LWWL against HBV.METHODS In vitro experiments utilized three HBV-replicating and three non-HBV-replicating cell lines.The in vivo experiment involved a hydrodynamic injectionmediated mouse model with HBV replication.Transcriptomics and metabolomics were used to investigate the underlying mechanisms of action of LWWL.RESULTS In HepG2.1403F cells,LWWL(0.8 mg/mL)exhibited inhibitory effects on HBV DNA,hepatitis B surface antigen and pregenomic RNA(pgRNA)at rates of 51.36%,24.74%and 50.74%,respectively.The inhibition rates of LWWL(0.8mg/mL)on pgRNA/covalently closed circular DNA in HepG2.1403F,HepG2.2.15 and HepG2.A64 cells were 47.78%,39.51%and 46.74%,respectively.Integration of transcriptomics and metabolomics showed that the anti-HBV effect of LWWL was primarily linked to pathways related to apoptosis(PI3K-AKT,CASP8-CASP3 and P53 pathways).Apoptosis flow analysis revealed that the apoptosis rate in the LWWL-treated group was significantly higher than in the control group(CG)among HBV-replicating cell lines,including HepG2.2.15(2.92%±1.01%vs 6.68%±2.04%,P<0.05),HepG2.A64(4.89%±1.28%vs 8.52%±0.50%,P<0.05)and HepG2.1403F(3.76%±1.40%vs 7.57%±1.35%,P<0.05)(CG vs LWWL-treated group).However,there were no significant differences in apoptosis rates between the non-HBV-replicating HepG2 cells(5.04%±0.74%vs 5.51%±1.57%,P>0.05),L02 cells(5.49%±0.80%vs 5.48%±1.01%,P>0.05)and LX2 cells(6.29%±1.54%vs 6.29%±0.88%,P>0.05).TUNEL staining revealed a significantly higher apoptosis rate in the LWWL-treated group than in the CG in the HBVreplicating mouse model,while no noticeable difference in apoptosis rates between the two groups was observed in the non-HBV-replicating mouse model.CONCLUSION Preliminary results suggest that LWWL exerts a potent inhibitory effect on wild-type and drug-resistant HBV,potentially involving selective regulation of apoptosis.These findings offer novel insights into the anti-HBV activities of LWWL and present a novel mechanism for the development of anti-HBV medications. 展开更多
关键词 Hepatitis B virus Chinese patent medicine Antiviral activity Antiviral mechanism Selective apoptosis
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A bacterial protein Rhp-PSP inhibits plant viral proliferation through endoribonuclease activity
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作者 Lijie Chen Qianze Peng +6 位作者 Xiaohua Du Weixing Zhang Ju’e Cheng Shu’e Sun Deyong Zhang Pin Su Yong Liu 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第6期1967-1978,共12页
Plant virus causes massive crop losses globally.However,there is currently no effective measure to control plant viral disease.Previously,we identify an antiviral protein Rhp-PSP,produced by the bacterial Rhodopseudom... Plant virus causes massive crop losses globally.However,there is currently no effective measure to control plant viral disease.Previously,we identify an antiviral protein Rhp-PSP,produced by the bacterial Rhodopseudomonas palustris strain JSC-3b.In this study,we discover that the antiviral activity of Rhp-PSP relies on its endoribonuclease activity.Converting the arginine(R)residue at position 129 onto alanine(A)abolishs its endoribonuclease activity on coat protein(CP)RNA of tobacco mosaic virus(TMV),consequentially,compromises the antiviral activity of Rhp-PSP.Further investigation demonstrates that,the mutant Rhp-PSP^(R129A)is unable to form the homotrimer as the wild type,indicating the importance of quaternary junction for the endoribonuclease activity.Overexpression of Rhp-PSP in Nicotiana benthamiana significantly enhances the resistance against TMV of seedlings,while expression of Rhp-PSP^(R129A)did not,confirming that endoribonuclease activity is responsible for the antiviral activity of Rhp-PSP.In addition,foliar spray of Rhp-PSP solution on tomato and pepper plants significantly reduces the disease index of viral diseases,indicating that Rhp-PSP shows potential to develop antiviral agent in practice. 展开更多
关键词 Rhodopseudomonas palustris Rhp-PSP tobacco mosaic virus ENDORIBONUCLEASE antiviral activity
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Progress,implications,and challenges in using humanized immune system mice in CAR-T therapy-Application evaluation and improvement
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作者 Hanwei Yue Lin Bai 《Animal Models and Experimental Medicine》 CAS CSCD 2024年第1期3-11,共9页
In recent years,humanized immune system(HIS)mice have been gradually used as models for preclinical research in pharmacotherapies and cell therapies with major breakthroughs in tumor and other fields,better mimicking ... In recent years,humanized immune system(HIS)mice have been gradually used as models for preclinical research in pharmacotherapies and cell therapies with major breakthroughs in tumor and other fields,better mimicking the human immune system and the tumor immune microenvironment,compared to traditional immunodeficient mice.To better promote the application of HIS mice in preclinical research,we se-lectively summarize the current prevalent and breakthrough research and evaluation of chimeric antigen receptor(CAR)-T cells in various antiviral and antitumor treat-ments.By exploring its application in preclinical research,we find that it can better reflect the actual clinical patient condition,with the advantages of providing high-efficiency detection indicators,even for progressive research and development.We believe that it has better clinical patient simulation and promotion for the updated design of CAR-T cell therapy than directly transplanted immunodeficient mice.The characteristics of the main models are proposed to improve the use defects of the existing models by reducing the limitation of antihost reaction,combining multiple models,and unifying sources and organoid substitution.Strategy study of relapse and toxicity after CAR-T treatment also provides more possibilities for application and development. 展开更多
关键词 ANTITUMOR ANTIVIRAL CAR-T humanized immune system model humanized mice preclinical research
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Characterization of Domeless receptors and the role of Bd Domeless3 in anti-symbiont-like virus defense in Bactrocera dorsalis
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作者 Wei Zhang Shaoyang Li +2 位作者 Rong Li Jinzhi Niu Jinjun Wang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第4期1274-1284,共11页
The Janus kinase/signal transducers and activators of transcription(JAK/STAT)signaling pathway play a pivotal role in innate immunity.Among invertebrates,Domeless receptors serve as the key upstream regulators of this... The Janus kinase/signal transducers and activators of transcription(JAK/STAT)signaling pathway play a pivotal role in innate immunity.Among invertebrates,Domeless receptors serve as the key upstream regulators of this pathway.In our study on Bactrocera dorsalis,we identified three cytokine receptors:BdDomeless1,BdDomeless2,and BdDomeless3.Each receptor encompasses five fibronectin-type-III-like(FN III)extracellular domains and a transmembrane domain.Furthermore,these receptors exhibit the increased responsiveness to diverse pathogenic challenges.Notably,only BdDomeless3 is upregulated during symbiont-like viral infections.Moreover,silencing BdDomeless3 enhanced the infectivity of Bactrocera dorsalis cripavirus(BdCV)and B.dorsalis picorna-like virus(BdPLV),underscoring BdDomeless3’s crucial role in antiviral defense of B.dorsalis.Following the suppression of Domeless3 expression,six antimicrobial peptide genes displayed decreased expression,potentially correlating with the rise in viral infectivity.To our knowledge,this is the first study identifying cytokine receptors associated with the JAK/STAT pathway in tephritid flies,shedding light on the immune mechanisms of B.dorsalis. 展开更多
关键词 Bactrocera dorsalis JAK/STAT pathway Domeless receptors antiviral immunity symbiont-like virus
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Antiviral efficacy of Andrographis paniculata and andrographolides:A narrative review
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作者 Kumarappan Chidambaram 《Asian Pacific Journal of Tropical Biomedicine》 SCIE CAS 2024年第11期461-476,共16页
The rise of emerging infectious diseases has become notably prominent due to ecological changes and mutations in pathogens.The respiratory illness outbreak caused by the COVID-19 pandemic has spread globally.Natural p... The rise of emerging infectious diseases has become notably prominent due to ecological changes and mutations in pathogens.The respiratory illness outbreak caused by the COVID-19 pandemic has spread globally.Natural products contain numerous structures and biological activities,offering ample options for discovering new antiviral drugs with unique targets and mechanisms.Andrographis paniculata has been utilized in Indian Ayurvedic,Swedish,Traditional Thai,and Chinese medicine to alleviate coughs,colds,and influenza symptoms.Early-stage laboratory studies indicate that this herbal extract may reduce inflammation and fever,and boost the body's natural defenses against viruses,potentially leading to symptom relief.This review aims to systematically present clinical trial data about antiviral herbal formulations derived from Andrographis paniculata,delineating the antiviral effects of both natural and synthetic derivatives,along with in silico analyses. 展开更多
关键词 AYURVEDA Andrographis paniculata Antiviral formulations Andrographolides COVID-19
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Anti-infective immune functions of type Ⅳ interferon in grass carp(Ctenopharyngodon idella):A novel antibacterial and antiviral interferon in lower vertebrates
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作者 Yuchen Liu Wentao Zhu +3 位作者 Yanqi Zhang Jingjing Zhang Maolin Lv Jianguo Su 《Zoological Research》 SCIE CSCD 2024年第5期972-982,共11页
Type Ⅳ interferon(IFN-υ)is a recently discovered cytokine crucial for host defense against viral infections.However,the role and mechanisms of IFN-υin bacterial infections remain unexplored.This study investigated ... Type Ⅳ interferon(IFN-υ)is a recently discovered cytokine crucial for host defense against viral infections.However,the role and mechanisms of IFN-υin bacterial infections remain unexplored.This study investigated the antibacterial and antiviral functions and mechanisms of grass carp(Ctenopharyngodon idella)IFN-υ(CiIFN-υ)both in vivo and in vitro.The CiIFN-υgene was first identified and characterized in grass carp.Subsequently,the immune expression of CiIFN-υsignificantly increased following bacterial challenge,indicating its response to bacterial infections.The eukaryotic recombinant expression plasmid of CiIFN-υwas then constructed and transfected into fathead minnow(FHM)cells.Supernatants were collected and incubated with four bacterial strains,followed by plate spreading and colony counting.Results indicated that CiIFN-υexhibited more potent antibacterial activity against gram-negative bacteria compared to gram-positive bacteria and aggregated gram-negative bacteria but not gram-positive bacteria.In vivo experiments further confirmed the antibacterial function,showing high survival rates,low tissue edema and damage,reduced tissue bacterial load,and elevated proinflammatory response at the early stages of bacterial infection.In addition,the antiviral function of CiIFN-υwas confirmed through in vitro and in vivo experiments,including crystal violet staining,survival rates,tissue viral burden,and reverse transcription-quantitative real-time polymerase chain reaction(RT-qPCR).This study highlights the antibacterial function and preliminary mechanism of IFN-υ,demonstrating that IFN-υpossesses dual functions against bacterial and viral infections. 展开更多
关键词 Grass carp(Ctenopharyngodon idella) IFN-υ Bactericidal activity Antiviral activity Antimicrobial immunity
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High-Value-Added Utilization of Turpentine:Screening of Anti-Influenza Virus Agents fromβ-Pinene Derivatives
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作者 Yiwen Li Hongyan Si +7 位作者 Peng Wang Hai Luo Minggui Shen Xiaoping Rao Zhanqian Song Shibin Shang Zongde Wang Shengliang Liao 《Journal of Renewable Materials》 EI CAS 2024年第1期45-56,共12页
Turpentine is a renewable and resourceful forest product.The deep processing and utilization of turpentine,particularly its primary componentβ-pinene,has garnered widespread attention.This study aimed to synthesize 4... Turpentine is a renewable and resourceful forest product.The deep processing and utilization of turpentine,particularly its primary componentβ-pinene,has garnered widespread attention.This study aimed to synthesize 40 derivatives ofβ-pinene,including nopinone,3-cyanopyridines of nopinone,myrtanyl acid,myrtanyl acylthioureas,and myrtanyl amides.We assessed the antiviral activities of theseβ-pinene derivatives against influenza virus A/Puerto Rico/8/34(H1N1)using the 3-(4,5-dimetylthiazol-2-yl)-2,5-diphenyltetrazolium bromide method.Theβ-pinene derivatives were used before and after cellular infection with the influenza virus to evaluate their preventive and therapeutic effects against the H1N1 virus.The results showed that only compound 10o exhibited a preventive effect against the H1N1 virus with a half-maximal inhibitory concentration(IC50)value of 47.6μmol/L.Among the compounds,4e,4i,and 4l demonstrated therapeutic effects against cellular infection,with compound 4e displaying the most potent therapeutic effect(IC50=17.5μmol/L),comparable to the positive control ribavirin.These findings indicated that certainβ-pinene derivatives exhibited in vitro antiviral activity against the H1N1 influenza A virus,warranting further investigation as potential anti-influenza agents. 展开更多
关键词 Antiviral activity Β-PINENE DERIVATIVE 3-CYANOPYRIDINE influenza virus
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Efficacy and safety of carrimycin in ten patients with severe pneumonia following solid organ transplantation
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作者 Xian-Quan Cui Lu-Wei Zhang +1 位作者 Peng Zhao Jing-Jing Feng 《World Journal of Clinical Cases》 SCIE 2024年第15期2542-2550,共9页
BACKGROUND The number of patients undergoing solid organ transplantation has increased annually.However,infections in solid organ transplant recipients can have a severe effect on patient survival owing to the continu... BACKGROUND The number of patients undergoing solid organ transplantation has increased annually.However,infections in solid organ transplant recipients can have a severe effect on patient survival owing to the continued use of immunosuppressants.Carrimycin is a novel macrolide antibiotic produced by genetically engineered streptomyces spiramyceticus harboring a 4’’-O-isovaleryltransferase gene(ist)from streptomyces thermotoleran.Carrimycin has good antibacterial and antiviral effects.However,no relevant studies have been conducted on the efficacy and safety of carrimycin in patients with severe pneumonia(SP)after solid organ transplantation.AIM To explore the efficacy and safety of carrimycin in patients with SP after solid organ transplantation to provide a medication reference for clinical treatment.METHODS In March 2022,ten patients with SP following solid-organ transplantation were treated at our hospital between January 2021 and March 2022.When the condition was critical and difficult to control with other drugs,carrimycin was administered.These ten patients'clinical features and treatment protocols were retrospectively analyzed,and the efficacy and safety of carrimycin for treating SP following solid organ transplantation were evaluated.RESULTS All ten patients were included in the analysis.Regarding etiological agent detection,there were three cases of fungal pneumonia,two cases of bacterial pneumonia,two cases of Pneumocystis pneumonia,and three cases of mixed infections.After treatment with carrimycin,the disease in seven patients significantly improved,the course of the disease was significantly shortened,fever was quickly controlled,chest computed tomography was significantly improved,and oxygenation was significantly improved.Finally,the patients were discharged after curing.One patient died of acute respiratory distress syndrome,and two patients discontinued treatment.CONCLUSION Carrimycin is a safe and effective treatment modality for SP following solid organ transplantation.Carrimycin may have antibacterial and antiviral effects in patients with SP following solid organ transplantation. 展开更多
关键词 Carrimycin Organ transplantation Severe pneumonia IMMUNOSUPPRESSANT INFECTION Antiviral drugs
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Prevention of hepatitis B reactivation in patients with hematologic malignancies treated with novel systemic therapies:Who and Why?
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作者 Matteo Tonnini Clara Solera Horna Luca Ielasi 《World Journal of Gastroenterology》 SCIE CAS 2024年第5期509-511,共3页
The risk of reactivation in patients with chronic or past/resolved hepatitis B virus(HBV)infection receiving chemotherapy or immunosuppressive drugs is a wellknown possibility.The indication of antiviral prophylaxis w... The risk of reactivation in patients with chronic or past/resolved hepatitis B virus(HBV)infection receiving chemotherapy or immunosuppressive drugs is a wellknown possibility.The indication of antiviral prophylaxis with nucleo(t)side analogue is given according to the risk of HBV reactivation of the prescribed therapy.Though the advent of new drugs is occurring in all the field of medicine,in the setting of hematologic malignancies the last few years have been characterized by several drug classes and innovative cellular treatment.As novel therapies,there are few data about the rate of HBV reactivation and the decision of starting or not an antiviral prophylaxis could be challenging.Moreover,patients are often treated with a combination of different drugs,so evaluating the actual role of these new therapies in increasing the risk of HBV reactivation is difficult.First results are now available,but further studies are still needed.Patients with chronic HBV infection[hepatitis B surface antigen(HBsAg)positive]are reasonably all treated.Past/resolved HBV patients(HBsAg negative)are the actual area of uncertainty where it could be difficult choosing between prophylaxis and pre-emptive strategy. 展开更多
关键词 Hepatitis B reactivation Hepatitis B virus Antiviral prophylaxis Hematologic malignancies Chimeric antigens receptor-T cell therapy Immune checkpoint inhibitors
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Current research progress on the viral immune evasion mechanisms of African swine fever virus
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作者 Changjiang Weng 《Animal Diseases》 CAS 2024年第4期245-262,共18页
African swine fever(ASF),caused by the ASF virus(ASFV),is an acute,severe,and highly contagious infectious disease in domestic pigs and wild boars.Domestic pigs infected with a virulent ASFV strain can have morbidity ... African swine fever(ASF),caused by the ASF virus(ASFV),is an acute,severe,and highly contagious infectious disease in domestic pigs and wild boars.Domestic pigs infected with a virulent ASFV strain can have morbidity and mortality rates of up to 100%.The epidemic of ASF has caused serious economic losses to the global pig industry.Currently,there is no safe and efective vaccine or specifc drug for treating ASF.Therefore,ASFV still poses a great threat to pig factories.ASFV is a double-stranded DNA virus with a complex icosahedral multilayer structure.The ASFV genome contains 150-170 open reading frames(ORFs)that encode 150-200 proteins.Some ASFV-encoded proteins are involved in virus invasion,genome replication,DNA repair,and virion formation.Some ASFV proteins execute immunomodulatory functions by regulating the host antiviral innate immune response.Accumulating studies have shown that the immunomodulatory functions of ASFV genes are closely related to the virulence and pathogenicity of ASFV isolates.This review summarizes the research advances on ASFV immune evasion mechanisms in African swine fever patients and provides new insights for developing attenuated live vaccine candidates to prevent and control ASF. 展开更多
关键词 African swine fever Immunoregulatory gene Live attenuated vaccines Antiviral innate immune responses
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The Beneficial Effects of Components of Garlic (Allium sativum L.) in the Poultry Industry
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作者 Alejandra Meza-Rios Gilberto Velazquez-Juarez +9 位作者 Inkar Castellanos-Huerta Rocio Ivette Lopez-Roa Luis A. Anguiano-Sevilla Xochitl Hernanez-Velasco Xochitl Hernanez-Velasco Saeed El-Ashram Ebtsam Al-Olayan Billy Hargis Guillermo Tellez-Isaias Adelaida Sara Minia Zepeda-Morales 《Food and Nutrition Sciences》 CAS 2024年第1期27-57,共31页
Plant-based antimicrobial agents are readily available, cost-effective, and exhibit low toxicity, making them promising alternatives in combatting microbial infections. Among these plants, garlic (Allium sativum) stan... Plant-based antimicrobial agents are readily available, cost-effective, and exhibit low toxicity, making them promising alternatives in combatting microbial infections. Among these plants, garlic (Allium sativum) stands out for its traditional medicinal use in effectively combating various microorganisms. In the poultry industry, preventing avian virus and bacterial infections is paramount for chicken husbandry. However, using conventional drugs poses potential risks to human health. Garlic, a widely used Asian plant in traditional medicine for various pathologies, has shown potential as an herbal prophylactic remedy against viral and bacterial infections. Recently, researchers explored garlic and its derivatives as a scientific strategy in veterinary practices for diverse purposes, such as improving poultry production characteristics and acting as antibiotic growth promoters. This comprehensive review delves into garlic and its derivatives as preventive and corrective treatments for viral diseases in laying hens and broilers. The paper highlights their potential effectiveness and safety as a natural means to enhance poultry health and welfare while mitigating the risks associated with conventional drug usage in the food industry. 展开更多
关键词 GARLIC ANTIVIRAL VETERINARY CHICKENS Allium sativum
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Association of preoperative antiviral treatment with incidences of post-hepatectomy liver failure in hepatitis B virus-related hepatocellular carcinoma
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作者 Xiao Wang Zhao-Yi Lin +5 位作者 You Zhou Qin Zhong Zong-Ren Li Xi-Xiang Lin Ming-Gen Hu Kun-Lun He 《World Journal of Gastrointestinal Surgery》 SCIE 2024年第7期2106-2118,共13页
BACKGROUND Post-hepatectomy liver failure(PHLF)is a common consequence of radical partial hepatectomy in hepatocellular carcinoma(HCC).AIMS To investigate the relationship between preoperative antiviral therapy and PH... BACKGROUND Post-hepatectomy liver failure(PHLF)is a common consequence of radical partial hepatectomy in hepatocellular carcinoma(HCC).AIMS To investigate the relationship between preoperative antiviral therapy and PHLF,as well as assess the potential efficacy of hepatitis B virus(HBV)DNA level in predicting PHLF.METHODS A retrospective study was performed involving 1301 HCC patients with HBV who underwent radical hepatectomy.Receiver operating characteristic(ROC)analysis was used to assess the capacity of HBV DNA to predict PHLF and establish the optimal cutoff value for subsequent analyses.Logistic regression analyses were performed to assess the independent risk factors of PHLF.The increase in the area under the ROC curve,categorical net reclassification improvement(NRI),and integrated discrimination improvement(IDI)were used to quantify the efficacy of HBV DNA level for predicting PHLF.The P<0.05 was considered statistically significant.RESULTS Logistic regression analyses showed that preoperative antiviral therapy was independently associated with a reduced risk of PHLF(P<0.05).HBV DNA level with an optimal cutoff value of 269 IU/mL(P<0.001)was an independent risk factor of PHLF.All the reference models by adding the variable of HBV DNA level had an improvement in area under the curve,categorical NRI,and IDI,particularly for the fibrosis-4 model,with values of 0.729(95%CI:0.705-0.754),1.382(95%CI:1.341-1.423),and 0.112(95%CI:0.110-0.114),respectively.All the above findings were statistically significant.CONCLUSION In summary,preoperative antiviral treatment can reduce the incidence of PHLF,whereas an increased preoperative HBV DNA level has a correlative relationship with an increased susceptibility to PHLF. 展开更多
关键词 Hepatocellular carcinoma Hepatitis B virus Preoperative antiviral treatment Liver resection Post-hepatectomy liver failure
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