orthopoxvirus

正痘病毒
  • 文章类型: Journal Article
    猴痘(MPX),一种非洲流行的正痘病毒病,现在是世界卫生组织于2023年7月宣布的国际关注的公共卫生紧急情况(PHEIC)。虽然一般是温和的,据报道,总病死率为3%,在与男性发生性关系的男性中,基本繁殖数(R0)>1(MSM,即,葡萄牙(1.4),联合王国(1.6),西班牙(1.8)。然而,在其他设置中,R0<1。与天花病毒一致,预计这也会增加母亲和胎儿出现不良后果的风险.这种疾病在免疫受损的妊娠状态下的结果是可怕的,显示母亲和胎儿的高死亡率和发病率,胎儿副作用的风险高达75%,严重孕产妇疾病的风险高达25%。因此,它需要及时诊断和干预。逆转录聚合酶链反应(RTPCR)测试是诊断的标准方法。我们总结了MPX对妊娠的最新发现,以及相关的危险因素。我们还给出了积极监测胎儿的建议,围产期保健,和良好的报告,以改善结果。可用的疫苗已显示出预防初级疾病的希望。
    Monkeypox (MPX), an orthopoxviral disease endemic in Africa, is now a public health emergency of international concern (PHEIC) as declared by the World Health Organization in July 2023. Although it is generally mild, the overall case fatality rate was reported to be 3%, and the basic reproduction number (R0) is > 1 in men who have sex with men (MSM, i.e., Portugal (1.4), the United Kingdom (1.6), and Spain (1.8)). However, R0 is < 1 in other settings. In concordance with the smallpox virus, it is also expected to increase the risk of adverse outcomes for both the mother and the fetus. The outcomes of the disease in an immunocompromised state of pregnancy are scary, showing high mortality and morbidity of both mother and fetus, with up to a 75% risk of fetal side effects and a 25% risk of severe maternal diseases. Therefore, it warrants timely diagnosis and intervention. The reverse transcription polymerase chain reaction (RT PCR) test is the standard approach to diagnosis. We summarized the recent findings of MPX on pregnancy, and the associated risk factors. We also give recommendations for active fetal surveillance, perinatal care, and good reporting to improve outcomes. The available vaccines have shown promise for primary disease prevention.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    水痘病毒(MPXV)是人类水痘疾病的病原体-一种类似于天花的衰弱性皮疹疾病。尽管CladeIMPXV仍然是西非和中非特有的,CladeIIMPXV在全球范围内造成了许多疫情。2022年的最新疫情是由于MPXV新进化枝的迅速传播,分类为分支IIb-与先前循环的病毒株不同的谱系。CladeIIb菌株引起的Mpox病的迅速传播和严重程度的增加已经提高了严重的公共卫生要求,即在MPXV感染期间更好地了解宿主和病毒决定簇。除了典型的皮疹,包括在眶周区域,MPXV引起中度至重度眼科表现-最常见,眼表并发症(例如,角膜炎,结膜炎,眼睑炎)。虽然刚果盆地内的CladeI型水痘的眼部表现已得到充分报道,CladeIIb眼痘病例的全球发病率趋势仍在出现。鉴于已证明所有MPXV毒株自动接种眼组织的能力以及CladeIIb病毒的传播性增强,迫切需要阐明MPXV引起眼部异常的机制.在这次审查中,我们讨论了MPXV的病毒和基因组结构,流行病学,全身和眼痘的病理学,以及潜在的预防和治疗干预措施。
    The Mpox virus (MPXV) is the causative agent of human Mpox disease - a debilitating rash illness similar to smallpox. Although Clade I MPXV has remained endemic to West and Central Africa, Clade II MPXV has been responsible for many outbreaks worldwide. The most recent outbreak in 2022 resulted from the rapid spread of a new clade of MPXV, classified into Clade IIb - a distinct lineage from the previously circulating viral strains. The rapid spread and increased severity of Mpox disease by the Clade IIb strain have raised the serious public health imperative of better understanding the host and viral determinants during MPXV infection. In addition to typical skin rashes, including in the periorbital area, MPXV causes moderate to severe ophthalmic manifestations - most commonly, ocular surface complications (e.g., keratitis, conjunctivitis, blepharitis). While ocular manifestations of Clade I Mpox within the Congo basin have been well-reported, global incidence trends of ocular Mpox cases by Clade IIb are still emerging. Given the demonstrated ability of all MPXV strains to auto-inoculate ocular tissue alongside the enhanced transmissibility of the Clade IIb virus, there is an urgent need to elucidate the mechanisms by which MPXV causes ocular anomalies. In this review, we discuss the viral and genomic structures of MPXV, the epidemiology, and pathology of systemic and ocular Mpox, as well as potential prophylactic and therapeutic interventions.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    在2023年夏季,欧洲地区经历了在2022年大规模爆发后,水痘病例的数量有限。这种增加的特征是异步和双峰增加,国家在不同的时间经历高峰。复苏期间病例的人口统计学特征与以前报告的情况基本一致。来自欧洲区域的所有可用序列都属于IIb进化枝。持续的努力对于控制并最终消除欧洲地区的水痘至关重要。
    During the summer of 2023, the European Region experienced a limited resurgence of mpox cases following the substantial outbreak in 2022. This increase was characterised by asynchronous and bimodal increases, with countries experiencing peaks at different times. The demographic profile of cases during the resurgence was largely consistent with those reported previously. All available sequences from the European Region belonged to clade IIb. Sustained efforts are crucial to control and eventually eliminate mpox in the European Region.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    Poxviridae的正痘病毒(OPXV)属包括人类病原体天花病毒(VARV),猴痘病毒(MPXV),痘苗病毒(VACV),和一些人畜共患病毒。VACV的许多Bcl-2样蛋白参与逃避宿主先天免疫。然而,在其他OPXVs中,很少有工作致力于其直系同源物的进化和功能。这里,我们发现由P2L基因编码的MPXV蛋白P2,和来自其他OPXV的P2直系同源物,例如VACV蛋白N2,定位于细胞核并拮抗干扰素(IFN)的产生。例外的是缺少核定位信号(NLS)的骆驼痘病毒(CMLV)和taterapox病毒(TATV)中的截短的P2直向同源物。机械上,MPXVP2的NLS与核蛋白α-2(KPNA2)相互作用以促进P2核易位,并竞争性抑制KPNA2介导的IRF3核易位和下游IFN的产生。在P2或直系同源物中NLS的缺失显着增强IRF3核易位和先天免疫反应,从而减少病毒复制。此外,在VACV中从N2中缺失NLS减弱了小鼠中的病毒复制和毒力。这些数据表明,NLS介导的P2易位对于P2诱导的先天免疫抑制至关重要。我们的发现有助于深入了解OPXVP2直向同源物在先天免疫逃避中的机制。
    The Orthopoxvirus (OPXV) genus of the Poxviridae includes human pathogens variola virus (VARV), monkeypox virus (MPXV), vaccinia virus (VACV), and a number of zoonotic viruses. A number of Bcl-2-like proteins of VACV are involved in escaping the host innate immunity. However, little work has been devoted to the evolution and function of their orthologues in other OPXVs. Here, we found that MPXV protein P2, encoded by the P2L gene, and P2 orthologues from other OPXVs, such as VACV protein N2, localize to the nucleus and antagonize interferon (IFN) production. Exceptions to this were the truncated P2 orthologues in camelpox virus (CMLV) and taterapox virus (TATV) that lacked the nuclear localization signal (NLS). Mechanistically, the NLS of MPXV P2 interacted with karyopherin α-2 (KPNA2) to facilitate P2 nuclear translocation, and competitively inhibited KPNA2-mediated IRF3 nuclear translocation and downstream IFN production. Deletion of the NLS in P2 or orthologues significantly enhanced IRF3 nuclear translocation and innate immune responses, thereby reducing viral replication. Moreover, deletion of NLS from N2 in VACV attenuated viral replication and virulence in mice. These data demonstrate that the NLS-mediated translocation of P2 is critical for P2-induced inhibition of innate immunity. Our findings contribute to an in-depth understanding of the mechanisms of OPXV P2 orthologue in innate immune evasion.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    2022年,就在COVID-19大流行结束之前,许多国家注意到病毒性猴痘的爆发。猴痘病毒,一种人畜共患病原体,导致人类高热疾病,类似天花。预防策略包括疫苗接种,严格的感染控制措施,避免与感染者接触。随着猴痘和相关痘病毒继续构成挑战,持续监视,早期诊断,迅速隔离,有效的控制措施对于限制传播和减轻疫情对公共卫生的影响至关重要。这篇综述为猴痘病毒的进化及其各种传播方式提供了宝贵的见解,包括死后传播,并对印度政府发布的预防和有效控制这种疾病传播的指导方针提供了总体看法。
    In 2022, just before the COVID-19 pandemic ended, many countries noticed a viral monkeypox outbreak. Monkeypox virus, a zoonotic pathogen, causes a febrile illness in humans and resembles smallpox. Prevention strategies encompass vaccination, strict infection control measures, and avoiding contact with infected persons. As monkeypox and related poxviruses continue to pose challenges, ongoing surveillance, early diagnosis, prompt isolation, and effective control measures are crucial for limiting transmission and mitigating the impact of outbreaks on public health. This review provides valuable insights into the evolution of the monkeypox virus and its various modes of transmission, including postmortem transmission, and offers an overall perspective on the guidelines issued by the Government of India to prevent and effectively control the spread of this disease.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    最近爆发的水痘疫情,由猴痘病毒(MPXV)引起,对全球公共卫生构成了新的威胁。这里,我们最初评估了免疫计划结束前出生的牛痘疫苗中MPXVB6蛋白的预先存在的抗体水平,然后鉴定了两种单克隆抗体(MAb),hMB621和hMB668,靶向B6上的不同表位,来自一名疫苗。结合测定表明,两种单克隆抗体在牛痘(VACV)中对B6及其直系同源物表现出广泛的结合能力,天花(VARV)和牛痘病毒(CPXV)。中和测定显示,两种MAb显示针对VACV的有效中和。使用BALB/c雌性小鼠模型的动物实验表明,两种MAb通过腹膜内注射显示出针对VACV的有效保护。此外,我们确定了B6和hMB668的复合结构,揭示了B6的结构特征和hMB668的表位。总的来说,我们的研究提供了两种有希望的候选抗体,用于治疗正痘病毒感染,包括水痘.
    The recent outbreak of mpox epidemic, caused by monkeypox virus (MPXV), poses a new threat to global public health. Here, we initially assessed the preexisting antibody level to the MPXV B6 protein in vaccinia vaccinees born before the end of the immunization program and then identified two monoclonal antibodies (MAbs), hMB621 and hMB668, targeting distinct epitopes on B6, from one vaccinee. Binding assays demonstrate that both MAbs exhibit broad binding abilities to B6 and its orthologs in vaccinia (VACV), variola (VARV) and cowpox viruses (CPXV). Neutralizing assays reveal that the two MAbs showed potent neutralization against VACV. Animal experiments using a BALB/c female mouse model indicate that the two MAbs showed effective protection against VACV via intraperitoneal injection. Additionally, we determined the complex structure of B6 and hMB668, revealing the structural feature of B6 and the epitope of hMB668. Collectively, our study provides two promising antibody candidates for the treatment of orthopoxvirus infections, including mpox.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    一种称为猴痘病毒(MPV)的双链DNA病毒,属于Poxviridae家族和正痘病毒属,可引起猴痘病毒(mpox)感染。这种病毒过去只感染中央,东,和西非。然而,它最近已经蔓延到非洲以外的地方。MPV爆发的范围如此之高,以至于2022年7月23日,世界卫生组织(WHO)宣布这是国际关注的突发公共卫生事件(PHEIC)。大约一年后,世卫组织于2023年5月11日通知全球突发公共卫生事件结束。这里,我们旨在评估MPV引起突发公共卫生事件的当前致病性和潜在风险.
    我们从PubMed上发表的文章中搜索了信息,Scopus,和科学直接。我们用猴痘,水痘,猴痘爆发,并以猴痘病毒为关键词进行文献检索。
    许多新的MPV变种已经出现在世界各地,它们为mpox创造了PHEIC。考虑到低杀伤力和传播率,水痘不再是全球公共卫生威胁。此外,治疗和预防措施的可用性帮助医疗保健当局以有效的方式对抗水痘感染。在这次审查中,我们描绘了从过去到现在的历史和演变,以及对未来结果的看法。此外,在这篇文章中,我们已经讨论了与水痘相关的症状,并批准了抗病毒治疗策略来抵御感染。这篇综述还强调了世卫组织为患者制定的预防指南,看护者,和医疗保健提供者控制水痘感染的爆发。
    我们相信本文将向医疗当局提供有关最近多国猴痘爆发的潜在公共卫生威胁的想法,以采取相应措施。
    UNASSIGNED: A double-stranded DNA virus called monkeypox virus (MPV) belonging to the Poxviridae family and Orthopoxvirus genus causes monkeypox (mpox) infection. This virus used to infect only Central, East, and West Africa. However, it has spread to an extent outside Africa recently. The range of MPV outbreaks was so high that on July 23, 2022, the World Health Organization (WHO) declared it a Public Health Emergency of International Concern (PHEIC). About a year later, the WHO notified the end of a global public health emergency for mpox on May 11, 2023. Here, we aimed to assess the current pathogenicity and potential risk of MPV causing public health emergencies.
    UNASSIGNED: We searched information from published articles available in PubMed, Scopus, and ScienceDirect. We used monkeypox, mpox, monkeypox outbreak, and monkeypox virus as keywords during the literature search.
    UNASSIGNED: Many new variants of MPV have emerged throughout the world that created PHEIC for mpox. Considering the low lethality and transmission rate, mpox is no longer a global public health threat. In addition, the availability of therapeutic and preventive measures helped the healthcare authorities fight the mpox infection in an efficient manner. In this review, we have portrayed the history and evolution of mpox from past to present and an idea of its future outcomes. Also, we have discussed the symptoms related to mpox and approved antiviral treatment strategies to fight off the infection in this piece. This review also emphasized the preventive guidelines set by the WHO for patients, caregivers, and healthcare providers to control the outbreak of mpox infection.
    UNASSIGNED: We believe this article would give an idea about the potential public health threats of the recent multi-country monkeypox outbreak to the healthcare authorities for taking measures accordingly.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    痘病毒是大的(200-450nm)和包膜病毒,其携带具有表皮细胞特异性适应性的双链DNA基因组。痘病毒科中的正痘病毒属构成几种医学和兽医学上重要的病毒,包括天花(天花),牛痘,猴痘病毒(MPXV),还有牛痘.猴痘病(mpox)最近已成为由MPXV引起的公共卫生紧急情况。在非地方病国家,已经记录了越来越多的人类MPXV病例,而没有任何已知的与来自地方性和地方性地区的动物接触的历史。他们也没有涉及前往病毒通常流行的地区。这里,我们回顾了MPXV复制,病毒病理生物学,病毒感染传播机制,病毒逃避宿主先天性免疫和针对水痘的抗病毒治疗。此外,我们讨论了包括疫苗接种在内的预防措施,并得出结论,使用针对正痘病毒的抗体,可以实现针对MPXV的交叉保护.尽管缺乏专门的抗病毒药物,一些化合物,如西多福韦和利巴韦林值得考虑预防水痘。
    Poxviruses are large (200-450 nm) and enveloped viruses carrying double-stranded DNA genome with an epidermal cell-specific adaptation. The genus Orthopoxvirus within Poxviridae family constitutes several medically and veterinary important viruses including variola (smallpox), vaccinia, monkeypox virus (MPXV), and cowpox. The monkeypox disease (mpox) has recently emerged as a public health emergency caused by MPXV. An increasing number of human cases of MPXV have been documented in non-endemic nations without any known history of contact with animals brought in from endemic and enzootic regions, nor have they involved travel to an area where the virus was typically prevalent. Here, we review the MPXV replication, virus pathobiology, mechanism of viral infection transmission, virus evasion the host innate immunity and antiviral therapies against Mpox. Moreover, preventive measures including vaccination were discussed and concluded that cross-protection against MPXV may be possible using antibodies that are directed against an Orthopoxvirus. Despite the lack of a specialised antiviral medication, several compounds such as Cidofovir and Ribavirin warrant consideration against mpox.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    尽管天花病毒已经在世界范围内根除,世界卫生组织(WHO)已经发布了关于该病毒在全球传播的可能性的警告。世界卫生组织于2022年7月将猴痘列为世界公共卫生紧急事件,需要紧急预防和治疗。猴痘病毒是痘病毒科的一部分,正痘病毒属,对天花负责,过去已经杀死了超过一百万人。病毒的自然宿主包括松鼠,冈比亚啮齿动物,黑猩猩,和其他猴子。猴痘病毒已经通过初级载体(各种动物物种)和次级载体传播给人类,包括直接接触病变,从体液中呼吸微粒,和感染的床上用品。病毒颗粒呈卵形或砖形,直径200-250nm,包含一个双链DNA分子,并且只在受感染细胞的细胞质中繁殖。猴痘会引起发烧,冷,肌肉疼痛,头痛,疲劳,和背痛。系统发育研究区分了猴痘的两个遗传进化枝:致病性更强的刚果盆地进化枝和西非进化枝。近年来,尽管缺乏关于这种疾病出现的信息,但人类猴痘病毒的地理传播却加速了,生态学,和流行病学。使用病变样本和聚合酶链反应(PCR),猴痘病毒被诊断出来了.在美国,改进的安卡拉疫苗现在可以用来保护那些患猴痘风险较高的人。我们现在已经可以很好地对抗天花并可以阻止猴痘的传播的抗病毒药物,但是对于猴痘没有特别的治疗方法.
    Although the smallpox virus has been eradicated worldwide, the World Health Organization (WHO) has issued a warning about the virus\'s potential to propagate globally. The WHO labeled monkeypox a world public health emergency in July 2022, requiring urgent prevention and treatment. The monkeypox virus is a part of the Poxviridae family, Orthopoxvirus genus, and is accountable for smallpox, which has killed over a million people in the past. Natural hosts of the virus include squirrels, Gambian rodents, chimpanzees, and other monkeys. The monkeypox virus has transmitted to humans through primary vectors (various animal species) and secondary vectors, including direct touch with lesions, breathing particles from body fluids, and infected bedding. The viral particles are ovoid or brick-shaped, 200-250 nm in diameter, contain a single double-stranded DNA molecule, and reproduce only in the cytoplasm of infected cells. Monkeypox causes fever, cold, muscle pains, headache, fatigue, and backache. The phylogenetic investigation distinguished between two genetic clades of monkeypox: the more pathogenic Congo Basin clade and the West Africa clade. In recent years, the geographical spread of the human monkeypox virus has accelerated despite a paucity of information regarding the disease\'s emergence, ecology, and epidemiology. Using lesion samples and polymerase chain reaction (PCR), the monkeypox virus was diagnosed. In the USA, the improved Ankara vaccine can now be used to protect people who are at a higher risk of getting monkeypox. Antivirals that we have now work well against smallpox and may stop the spread of monkeypox, but there is no particular therapy for monkeypox.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

  • 文章类型: Journal Article
    在过去的4年里,世界经历了两次蝙蝠传播病毒的大流行。首先,2019年,SARS-CoV-2大流行开始,并在世界各地造成数百万人死亡。2022年,世界各国爆发了猴痘大流行。这些流行病见证了医疗保健和研究机构的运动和倡议,以建立全球认识,以应对任何未来的流行病和生物威胁。一个健康概念是现代的,全面,统一改善人类的方法,动物,和生态系统健康。这个概念显示了它们是多么的相互交织和相互关联,无论是环境,或病理关系。这篇综述旨在描述Poxviridae及其对一种健康概念的影响,通过研究痘病毒如何影响动物健康的根本原因,人类,和环境。回顾疾病在动物与人类之间传播的影响,人类对人类,并将动物与痘病毒作为第三方,以实现对感染和病毒传播的全面了解。因此,有助于增强检测,诊断,研究,以及关于OneHealth应用的治疗方法。
    In the last 4 years, the world has experienced two pandemics of bat-borne viruses. Firstly, in 2019 the SARS-CoV-2 pandemic started and has been causing millions of deaths around the world. In 2022, a Monkeypox pandemic rose in various countries of the world. Those pandemics have witnessed movements and initiatives from healthcare and research institutions to establish a worldwide understanding to battle any future pandemics and biological threats. One Health concept is a modern, comprehensive, unifying ways to improve humans, animals, and ecosystems\' health. This concept shows how much they are intertwined and related to one another, whether it is an environmental, or a pathological relation. This review aims to describe Poxviridae and its impact on the One Health concept, by studying the underlying causes of how poxviruses can affect the health of animals, humans, and environments. Reviewing the effect of disease transmission between animal to human, human to human, and animal to animal with pox viruses as a third party to achieve a total understanding of infection and viral transmission. Thus, contributing to enhance detection, diagnosis, research, and treatments regarding the application of One Health.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

    求助全文

公众号