检索范围:
排序: 展示方式:
Direct acting antiviral-induced dynamic reduction of serum
Tung Huynh, Ke-Qin Hu
《医学前沿(英文)》 2019年 第13卷 第6期 页码 658-666 doi: 10.1007/s11684-019-0707-7
关键词: chronic hepatitis C α fetoprotein direct acting antiviral treatment cirrhosis
ROUTE DEVELOPMENT, ANTIVIRAL STUDIES, FIELD EVALUATION AND TOXICITY OF AN ANTIVIRAL PLANT PROTECTANT
《农业科学与工程前沿(英文)》 2022年 第9卷 第1期 doi: 10.15302/J-FASE- 2021390
It has previously been shown that tryptophan, the biosynthesis precursor of Peganum harmala alkaloids, and its derivatives have anti-TMV activity both in vitro and in vivo. Further exploration of this led to the identification of NK0238 as a highly effective agent for the prevention and control of diseases caused by plant viruses, but the existing routes are unsuitable for its large-scale synthesis. This study optimized a route for two-step synthesis of this virucide candidate via reaction of l-tryptophan with triphosgene to produce l-tryptophan-N-carboxylic anhydride, which then reacts with n-octylamine to give NK0238 at up to 94% yield and nearly 97% HPLC purity. In addition, the route was used for the preparation of NK0238 on a>40 g scale permitting further assessment of its antivirus activity in the greenhouse and field experiments, and toxicity tests. NK0238 exhibited useful antiviral activities against a variety of viruses both in greenhouse and field experiments. The toxicity tests showed that NK0238 was not acutely toxic to birds, fish, honey bees and silkworms. The optimized route provides a solid foundation for its large-scale synthesis and subsequent efficacy and toxicity studies, its excellent activity and safety make NK0238 a promising drug candidate for further development.
Design, synthesis, and antiviral properties of 2-aryl-1H-benzimidazole-4-carboxamide derivatives
Xianjin LUO, Zhonglü ZHANG, Yutian YANG, Fei XUE, Naiyun XIU, Yuanbin SHE
《化学科学与工程前沿(英文)》 2009年 第3卷 第3期 页码 305-309 doi: 10.1007/s11705-009-0021-z
ROUTE DEVELOPMENT, ANTIVIRAL STUDIES, FIELD EVALUATION AND TOXICITY OF AN ANTIVIRAL PLANT PROTECTANT
Wentao XU, Hao TIAN, Hongjian SONG, Yuxiu LIU, Yongqiang LI, Qingmin WANG
《农业科学与工程前沿(英文)》 页码 110-119 doi: 10.15302/J-FASE-2021390
关键词: antiviral plant protectant antiviral in the greenhouse field evaluation L-trp-NCA synthesis optimization toxicity tests
Ying HUANG, Clement Wesley GNANADURAI, Zhenfang FU
《农业科学与工程前沿(英文)》 2017年 第4卷 第3期 页码 260-267 doi: 10.15302/J-FASE-2016116
关键词: antiviral blood brain barrier chemokines and cytokines innate immunity rabies virus
《农业科学与工程前沿(英文)》 2021年 第8卷 第4期 页码 603-622 doi: 10.15302/J-FASE -2021397
The COVID-19 infections caused by SARS-CoV-2 have resulted in millions of people being infected and thousands of deaths globally since November 2019. To date, no unique therapeutic agent has been developed to slow the progression of this pandemic. Despite possessing antiviral traits the potential of bacteriocins to combat SARS-CoV-2 infection has not been fully investigated. This review summarizes the mechanisms by which bacteriocins can be manipulated and implemented as effective virus entry blockers with infection suppression potential properties to highly transmissible viruses through comprehensive immune modulations that are potentially effective against COVID-19. These antimicrobial peptides have been suggested as effective antiviral therapeutics and therapeutic supplements to prevent rapid virus transmission. This review also provides a new insight into the cellular and molecular alterations which have made SARS-CoV-2 self-modified with diversified infection patterns. In addition, the possible applications of antimicrobial peptides through both natural and induced mechanisms in infection prevention perspectives on changeable virulence cases are comprehensively analyzed. Specific attention is given to the antiviral mechanisms of the molecules along with their integrative use with synthetic biology and nanosensor technology for rapid detection. Novel bacteriocin based therapeutics with cutting-edge technologies might be potential substitutes for existing time-consuming and expensive approaches to fight this newly emerged global threat.
Current recommendations of managing HBV infection in preconception or pregnancy
null
《医学前沿(英文)》 2014年 第8卷 第2期 页码 158-165 doi: 10.1007/s11684-014-0340-4
Hepatitis B remains a leading cause of cirrhosis, hepatocellular carcinoma and liver transplantation worldwide. Management of chronic hepatitis B during pregnancy is challenging. Transmission of hepatitis B to infants still occurs perinatally although immunoprophylaxis is widely available for infants born to mothers with chronic hepatitis B infection. The emerging data suggest that initiation of antiviral therapy in the beginning of the third trimester in highly viremic mothers can prevent immunoprophylaxis failure in their infants. The available drug safety data show that lamivudine, telbivudine and tenofovir are generally safe to be used during the pregnancy. In order to minimize the fetal exposure to the antiviral medication, antiviral therapy during the pregnancy should be limited to a selected group of patients with cirrhosis, high hepatitis B viral load, or prior history immunoprophylaxis failure. An elective Caesarean section may reduce the risk of perinatal transmission. For those females planning for pregnancy or in early stage of pregnancy, communication and follow-up among obstetrician, gastroenterologist, and primary care physician are important. In this article, we will review the features of hepatitis B infection before, during and after the pregnancy; the risk factors that increase mother-to-child transmission; safety data on antiviral drug use during pregnancy; and the potential role of Caesarean section in selected cases.
关键词: antiviral therapy Caesarean section cirrhosis hepatitis B immunoprophylaxis mother-to-child transmission pregnancy prevention
Sufen ZHAO,Yuanyuan JIA,Weiwei ZHANG,Lili WANG,Yunfei MA,Kedao TENG
《农业科学与工程前沿(英文)》 2015年 第2卷 第4期 页码 318-326 doi: 10.15302/J-FASE-2015080
关键词: garlic infectious bursal disease virus (IBDV) antiviral effect IgM-bearing B lymphocyte
A brief review of microRNA and its role in PRRSV infection and replication
Xuekun GUO,Wenhai FENG
《农业科学与工程前沿(英文)》 2014年 第1卷 第2期 页码 114-120 doi: 10.15302/J-FASE-2014022
关键词: porcine reproductive and respiratory syndrome virus (PRRSV) microRNA antiviral viral tropism
null
《医学前沿(英文)》 2017年 第11卷 第4期 页码 502-508 doi: 10.1007/s11684-017-0590-z
Although the efficacy of nucleos(t)ide analogue (NA) has been confirmed for treatment of chronic hepatitis B, long-term therapy has been recommended due to the high frequency of off-therapy viral DNA rebound and disease relapse. In this review, the RNA virion-like particles of hepatitis B virus (HBV) are integrated into the life cycle of HBV replication, and the potential significance of serum HBV RNA is systematically described. The production of HBV RNA virion-like particles should not be blocked by NA; in this regard, serum HBV RNA is found to be a suitable surrogate marker for the activity of intrahepatic covalently closed circular DNA (cccDNA), particularly among patients receiving NA therapy. Therefore, the concept of virological response is redefined as persistent loss of serum HBV DNA and HBV RNA. In contrast to hepatitis B surface antigen (HBsAg) that can originate from either the cccDNA or the integrated HBV DNA fragment, serum HBV RNA, with pregenomic RNA origination, can only be transcribed from cccDNA. Therefore, the loss of serum HBV RNA would likely be a promising predicator for safe drug discontinuation. The clinical status of consistent loss of serum HBV RNA accompanied with low serum HBsAg levels might be implicated as a “para-functional cure,” a status nearly close to the functional cure of chronic hepatitis B, to distinguish the “functional cure” characterized as serum HBsAg loss with or without anti-HBs seroconversion.
关键词: chronic hepatitis B serum HBV RNA nucleos(t)ide analogs virological response para-functional cure
Advances in newly developing therapy for chronic hepatitis C virus infection
null
《医学前沿(英文)》 2014年 第8卷 第2期 页码 166-174 doi: 10.1007/s11684-014-0334-2
Chronic hepatitis C virus (HCV) infection afflicts a reported 170 million people worldwide and is often complicated by cirrhosis and hepatocellular carcinoma. Morbidity and mortality are decreased with the successful treatment of chronic HCV infection. Increased understanding of the HCV has allowed further development of new direct-acting antiviral (DAA) agents against the HCV and has also allowed the development of IFN-free oral treatment regimens. In late 2013 the first nucleotide polymerase inhibitor regimen with RBV alone for genotypes 2/3 and in combination with a 12-week regimen of PEG-IFN+RBV for genotypes 1, 4 was approved for use in the US. A number of promising new DAA regimens which are IFN-free are in phase 3 development and the first will likely be approved for use in the US in 2014. The currently approved regimens are discussed in detail and currently available data on future regimens are reviewed herein.
关键词: direct-acting antiviral (DAA) nucleotide polymerase inhibitors protease inhibitors
Small-molecule anti-COVID-19 drugs and a focus on China’s homegrown mindeudesivir (VV116)
《医学前沿(英文)》 doi: 10.1007/s11684-023-1037-3
中药治疗新冠病毒肺炎的科学基础 Perspective
梁丽娴, 潘胡丹, 黄虞枫, 范星星, 王婉莹, 何芳, 蔡俊, 周华, 刘良
《工程(英文)》 2020年 第6卷 第10期 页码 1099-1107 doi: 10.1016/j.eng.2020.08.009
新近暴发的新冠病毒肺炎(COVID-19)已成为危害全球健康的紧急事件。现有证据表明,新冠病毒(SARS-CoV-2)与其他冠状病毒(如SARS-CoV和MERS-CoV)的基因序列具有相似性。因此, 针对现存冠状病毒的引发疾病的机制研究和在治疗SARS时所取得的经验和教训,可咨今天对抗新冠病毒引发疾病的参考。COVID-19患者的临床病理特征提示患者在病情进展过程中通常会经历五个发展阶段:大量病毒感染、免疫系统抑制、细胞因子风暴、多器官损伤及后期的肺纤维化样改变, 严重者常导致死亡。早期阻断疾病进展是取得治疗成功的关键。但是,目前尚无针对COVID-19的 特效药物或疫苗,世界卫生组织(WHO)正敦促尽快建立新型预防和治疗策略。传统中医药(TCM) 对于疫病的防治的实践已经积累了几千年的有用经验,它通过整体调节机体功能发挥疗效。在此次疫情中,中医药作为替代治疗或与西药联合使用,在疫情防控中发挥了重要的作用。本文总结了此次抗疫过程中中国国家和省级机构推荐使用的中药复方和中成药的潜在用途和治疗机制,以期发现其治疗COVID-19的潜在科学内涵。同时,整合应用多种组学及转化医学技术开展基础与临床研究有望进一步证实中药复方的治疗机制。
Pathogenesis of pandemic H1N1 2009 influenza virus infection and the implication on management
Kelvin Kai-Wang TO FRCPath, Iris Wai-Sum LI FRCP, Ivan Fan-Ngai HUNG FRCP, Vincent Chi-Chung CHENG FRCPath, Kwok-Yung YUEN MD,
《医学前沿(英文)》 2010年 第4卷 第2期 页码 147-156 doi: 10.1007/s11684-010-0030-9
关键词: influenza A virus H1N1 subtype pandemic pathogenesis virulence factors immunity management antiviral
法匹拉韦治疗新冠病毒肺炎的开放性对照临床研究 Article
蔡庆贤,杨明辉,刘东京,陈军,舒丹,夏俊霞,廖雪娇,顾元博,蔡秋娥,杨扬,沈晨光,李晓鹤,彭凌,黄德良,张晶,张舒荣,王福祥,刘甲野,陈莉,陈淑彦,王召钦,张政,曹瑞源,钟武,刘映霞,刘磊
《工程(英文)》 2020年 第6卷 第10期 页码 1192-1198 doi: 10.1016/j.eng.2020.03.007
2019年12月以来,中国暴发了一场由严重急性呼吸系统综合征冠状病毒2(SARS-CoV-2)感染所引发的新冠病毒肺炎(COVID-19)疫情。超过16%的患者出现急性呼吸窘迫综合征,病死率为1%~2%。目前尚无有关特效治疗方法的报道。在此,我们比较了法匹拉韦(Favipiravir, FPV)和洛匹那韦(Lopinavir, LPV)/利托那韦(Ritonavir, RTV)治疗COVID-19的效果。FPV治疗组给药方案为实验室确诊COVID-19感染患者口服FPV(第1天:给药2次,单次1600 mg;第2~14天:每日2次,单次600 mg),同时干扰素α(IFN-α)雾化吸入(每日2次,单次500万国际单位)。而对照组给药方案为对患者进行洛匹那韦/利托那韦治疗(第1~14天:每日2次,单次400 mg/100 mg),同时IFN-α雾化吸入(每日2次,单次500万国际单位)。FPV治疗组的35例患者和对照组的45例患者在入组时,两组之间患者的所有基线特征均具有可比性。经过比较两组患者在胸部CT、病毒清除和药物安全性方面的变化发现,在病毒清除时间[中位时间(四分位间距,IQR)]方面,FPV治疗组的病毒清除时间[4天(IQR, 2.5~9)]比对照组[11天(IQR, 8~13)]的更短(P < 0.001)。在胸部CT方面,FPV治疗组的胸部CT改善率(91.43%)相比对照组(62.22%)有显著改善(P = 0.004)。在调整了潜在的混杂因素后,FPV治疗组在胸部CT方面仍显示出明显更高的改善率。多变量Cox回归分析显示,FPV的使用与病毒清除速度的提高具有独立的相关性。此外,FPV治疗组出现的不良事件比对照组少。在本项开放的给药前后对照研究中,FPV在疾病进展控制和病毒清除方面对COVID-19表现出更好的治疗效果。这些初步的临床结果为感染SARS-CoV-2患者的治疗提供了有价值的信息。
关键词: 法匹拉韦 新冠病毒肺炎 SARS-CoV-2 抗病毒治疗 开放性非随机对照研究
标题 作者 时间 类型 操作
ROUTE DEVELOPMENT, ANTIVIRAL STUDIES, FIELD EVALUATION AND TOXICITY OF AN ANTIVIRAL PLANT PROTECTANT
期刊论文
Design, synthesis, and antiviral properties of 2-aryl-1H-benzimidazole-4-carboxamide derivatives
Xianjin LUO, Zhonglü ZHANG, Yutian YANG, Fei XUE, Naiyun XIU, Yuanbin SHE
期刊论文
ROUTE DEVELOPMENT, ANTIVIRAL STUDIES, FIELD EVALUATION AND TOXICITY OF AN ANTIVIRAL PLANT PROTECTANT
Wentao XU, Hao TIAN, Hongjian SONG, Yuxiu LIU, Yongqiang LI, Qingmin WANG
期刊论文
Critical roles of chemokines and cytokines in antiviral innate immune responses during rabies virus infection
Ying HUANG, Clement Wesley GNANADURAI, Zhenfang FU
期刊论文
ANTIVIRAL EFFECTS OF BACTERIOCIN AGAINST ANIMAL-TO-HUMAN TRANSMITTABLE MUTATED SARS-COV-2: A SYSTEMATIC
期刊论文
A brief review of microRNA and its role in PRRSV infection and replication
Xuekun GUO,Wenhai FENG
期刊论文
Potential use of serum HBV RNA in antiviral therapy for chronic hepatitis B in the era of nucleos(t)ide
null
期刊论文
Pathogenesis of pandemic H1N1 2009 influenza virus infection and the implication on management
Kelvin Kai-Wang TO FRCPath, Iris Wai-Sum LI FRCP, Ivan Fan-Ngai HUNG FRCP, Vincent Chi-Chung CHENG FRCPath, Kwok-Yung YUEN MD,
期刊论文