COVID-19 and preeclampsia with severe features at 34-weeks gestation

The evolving coronavirus disease 2019 (COVID-19) pandemic, caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has led to a rapid expansion of knowledge on the disease's clinical manifestations, laboratory and radiographic abnormalities, and patient trajectories. One area of particular focus is the effect that this illness may have on pregnancy and maternal-fetal disease. As of April 24, 2020, we identified 55 English language reports in the scientific literature summarizing data for 339 women and 258 fetuses and neonates. The majority of these data have focused on maternal-fetal transmission and neonatal outcomes. One systematic review and meta-analysis including the spectrum of coronaviruses [Severe Acute Respiratory Syndrome (SARS), Middle East Respiratory Syndrome (MERS), and COVID-19] in pregnancy noted increased rates of adverse outcomes associated with this group of infections. Here, we report the case of a COVID-19 positive woman presenting to our emergency department (ED) at 34 weeks gestation with preeclampsia. This case highlights the unique diagnostic and therapeutic challenges associated with treating patients with these concomitant diseases.     

Cross-protective immunity following coronavirus vaccination and coronavirus infection

Although severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccines have shown efficacy against SARS-CoV-2, it is unknown if coronavirus vaccines can also protect against other coronaviruses that may infect humans in the future. Here, we show that coronavirus vaccines elicited cross-protective immune responses against heterologous coronaviruses. In particular, we show that a severe acute respiratory syndrome coronavirus 1 (SARS-CoV-1) vaccine developed in 2004 and known to protect against SARS-CoV-1 conferred robust heterologous protection against SARS-CoV-2 in mice. Similarly, prior coronavirus infections conferred heterologous protection against distinct coronaviruses. Cross-reactive immunity was also reported in patients with coronavirus disease 2019 (COVID-19) and in individuals who received SARS-CoV-2 vaccines, and transfer of plasma from these individuals into mice improved protection against coronavirus challenges. These findings provide the first demonstration to our knowledge that coronavirus vaccines (and prior coronavirus infections) can confer broad protection against heterologous coronaviruses and establish a rationale for universal coronavirus vaccines.     

COVID-19 and liver diseases,what we know so far

Coronavirus disease 2019 (COVID-19) pneumonia outbreak started in December 2019. On March 12, 2020, the World Health Organization (WHO) declared that the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) constitutes a pandemic, and as of May 2021, SARS-CoV-2 has infected over 167.3 million patients, including 3.4 million deaths, reported to WHO. In this review, we will focus on the relationship between SARS-CoV-2 infection and the liver. We will discuss how chronic liver diseases affect the COVID-19 disease course and outcomes. We will also discuss the SARS-CoV-2 effects on the liver, mechanisms of acute liver injury, and potential management plans.     

Convalescent plasma as a therapeutic agent for SARS-CoV,MERS-CoV and SARS-CoV-2: A scoping review

Severe acute respiratory syndrome coronavirus (SARS-CoV), Middle East respiratory syndrome coronavirus (MERS-CoV), and SARS-CoV-2 are three kinds of coronaviruses that are exceptionally pathogenic to humans via zoonotic infections. The outbreaks of SARS-CoV and MERS-CoV, and SARS-CoV-2, to some extent, posed a severe threat to human health, daily activities as well as the economic status of many countries. When faced with these emerging viruses and no accessible vaccines and drugs, convalescent plasma (CP) is required as passive immunotherapy, since CP has the potential to neutralize and eliminate the virus from blood circulation. The sources of CP are individuals who have recovered from the viruses. Currently, CP is administered as emergency use and investigational treatment. Some studies have shown that CP is effective to treat infected individuals with viral pandemics such as influenza A, Ebola virus, SARS-CoV, and MERS-CoV. Moreover, following the deadly outbreak of SARS-CoV-2 in 2019, plenty of non-randomized clinical studies have been done on the effectiveness of CP for the treatment of Coronavirus Disease 2019 (COVID-19), and most of these studies have indicated that CP therapy is promising and saved many critically-ill patients. Therefore, CP is a helpful immune therapeutic agent for the immediate response of such pandemics because of its clinical efficacy, immediate availability, cost-effectiveness, ease of production, delivery, and storage. This review aims to summarize the effectiveness of CP in the treatment of these three coronaviruses, i.e. SARS-CoV, MERS-CoV, and SARS-CoV-2.     

Coronavirus Disease (COVID-19): A primer for emergency physicians

IntroductionRapid worldwide spread of Coronavirus Disease 2019 (COVID-19) has resulted in a global pandemic.ObjectiveThis review article provides emergency physicians with an overview of the most current understanding of COVID-19 and recommendations on the evaluation and management of patients with suspected COVID-19.DiscussionSevere Acute Respiratory Syndrome coronavirus 2 (SARS-CoV-2), the virus responsible for causing COVID-19, is primarily transmitted from person-to-person through close contact (approximately 6 ft) by respiratory droplets. Symptoms of COVID-19 are similar to other viral upper respiratory illnesses. Three major trajectories include mild disease with upper respiratory symptoms, non-severe pneumonia, and severe pneumonia complicated by acute respiratory distress syndrome (ARDS). Emergency physicians should focus on identifying patients at risk, isolating suspected patients, and informing hospital infection prevention and public health authorities. Patients with suspected COVID-19 should be asked to wear a facemask. Respiratory etiquette, hand washing, and personal protective equipment are recommended for all healthcare personnel caring for suspected cases. Disposition depends on patient symptoms, hemodynamic status, and patient ability to self-quarantine.ConclusionThis narrative review provides clinicians with an updated approach to the evaluation and management of patients presenting to the emergency department with suspected COVID-19.     

冠状病毒疾病2019发病机制若干热点问题的思考

严重急性呼吸综合征冠状病毒2型（SARS-CoV-2）所致冠状病毒疾病2019（COVID-19）已构成国际关注的突发公共卫生事件。COVID-19传染性强,可导致患者出现严重呼吸道感染和多器官系统功能损害。COVID-19发病机制尚不明确,我们推测SARS-CoV-2直接致宿主靶细胞损伤及机体免疫炎症反应紊乱可能是COVID-19的主要致病机制。本文基于相关研究领域的进展,对COVID-19发病机制中的若干热点问题进行分析和讨论,并提出思考。     

Does common cold coronavirus infection protect against severe SARS-CoV-2 disease?

The coronavirus disease 2019 (COVID-19) pandemic continues to cause morbidity and mortality. Since SARS coronavirus 2 (SARS-CoV-2) was identified as the cause for COVID-19, some have questioned whether exposure to seasonal common cold coronaviruses (CCCs) could provide tangible protection against SARS-CoV-2 infection or disease. In this issue of the JCI, Sagar et al. examined SARS-CoV-2 infections and outcomes of patients who had previously tested positive or negative for CCC infection (CCC⁺ or CCC^–) by a comprehensive respiratory panel using PCR. No differences were seen between groups in terms of susceptibility to SARS-CoV-2 infection. However, hospitalized patients with a documented history of CCC infection had lower rates of intensive care unit (ICU) admissions and higher rates of survival than hospitalized CCC^– patients. While these findings are associative and not causative, they highlight evidence suggesting that previous CCC infection may influence the disease course of SARS-CoV-2 infection.     

Targeting severe acute respiratory syndrome-coronavirus (SARS-CoV-1) with structurally diverse inhibitors: a comprehensive review

Coronaviruses, which were discovered in 1968, can lead to some human viral disorders, like severe acute respiratory syndrome (SARS), Middle East respiratory syndrome-related (MERS), and, recently, coronavirus disease 2019 (COVID-19). The coronavirus that leads to COVID-19 is rapidly spreading all over the world and is the reason for the deaths of thousands of people. Recent research has revealed that there is about 80% sequence homology between the coronaviruses that cause SARS and COVID-19. Considering this fact, we decided to collect the maximum available information on targets, structures, and inhibitors reported so far for SARS-CoV-1 that could be useful for researchers who work on closely related COVID-19. There are vital proteases, like papain-like protease 2 (PL2pro) and 3C-like protease (3CLpro), or main protease (Mpro), that are involved in and are essential for the replication of SARS coronavirus and so are valuable targets for the treatment of patients affected by this type of virus. SARS-CoV-1 NTPase/helicase plays an important role in the release of several non-structural proteins (nsps), so it is another essential target relating to the viral life cycle. In this paper, we provide extensive information about diverse molecules with anti-SARS activity. In addition to traditional medicinal chemistry outcomes, HTS, virtual screening efforts, and structural insights for better understanding inhibitors and SARS-CoV-1 target complexes are also discussed. This study covers a wide range of anti-SARS agents, particularly SARS-CoV-1 inhibitors, and provides new insights into drug design for the deadly SARS-CoV-2 virus.

Since the coronaviruses that cause COVID-19 and SARS-CoV-1 share 80% structural similarity, we present a comprehensive review of the diverse molecular inhibitors of SARS-CoV-1. This will help to accelerate drug discovery for deadly coronavirus diseases.     

Regulatory consideration on preparation and clinical use of COVID-19 convalescent plasma

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), the cause of coronavirus disease (COVID-19), spreading from Wuhan to worldwide has been emerged since December 2019. Although scientists and researchers have been racing to develop specific therapeutic agents or vaccines against SARS-CoV-2 since the identification of the agent, either a drug or a vaccine has not been approved to treat or to prevent COVID-19 up to date. On the base of historical experiences, Convalescent Plasma (CP), a passive antibody therapy, has been evaluated as a hopeful and potential therapeutic option since the beginning of the COVID-19 outbreak. Immune plasma had been used previously for the treatment of H1N1 influenza virus, SARS-CoV-1 and MERS-CoV epidemics successfully. In this scope competent authorities are responsible to set up certain principles and criteria for the collection and clinical use of COVID-19 Convalescent Plasma (CCP). This document has been prepared to aid both for the convalescent plasma suppliers and the clinicians. The first part encompasses the supply of CCP and the second part lead the clinical use of CCP for the treatment of patients with severe COVID-19 infection.Turkish Ministry of Health developed a guide on collection and clinical use of CCP and created a web-based monitoring system to follow-up the patients treated with convalescent plasma in universal. This follow-up process is thought to be crucial for the creation and development of current and future treatment modalities. This guide would be a pathfinder for clinicians and/or institutions those eager to conduct CCP treatment more effectively.     

Healthy neonate born to a SARS-CoV-2 infected woman: A case report and review of literature

BACKGROUNDSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a newly discovered coronavirus that has generated a worldwide outbreak of infections. Many people with coronavirus disease-2019 (COVID-19) have developed severe illness, and a significant number have died. However, little is known regarding infection by the novel virus in pregnant women. We herein present a case of COVID-19 confirmed in a woman delivering a neonate who was negative for SARS-CoV-2 and related it to a review of the literature on pregnant women and human coronavirus infections.CASE SUMMARYThe patient was a 36-year-old pregnant woman in her third trimester who had developed progressive clinical symptoms when she was confirmed as infected with SARS-CoV-2. Given the potential risks for both the pregnant woman and the fetus, an emergency cesarean section was performed, and the baby and his mother were separately quarantined and cared for. As a result, the baby currently shows no signs of SARS-CoV-2 infection (his lower respiratory tract samples were negative for the virus), while the mother completely recovered from COVID-19.CONCLUSIONAlthough we presented a single case, the successful result is of great significance for pregnant women with SARS-CoV-2 infection and with respect to fully understanding novel coronavirus pneumonia.     

COVID-19 and gastroenteric manifestations

Coronavirus disease 2019 (COVID-19), caused by the infection of a novel coronavirus [severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)], has become a pandemic. The infection has resulted in about one hundred million COVID-19 cases and millions of deaths. Although SARS-CoV-2 mainly spreads through the air and impairs the function of the respiratory system, it also attacks the gastrointestinal epithelial cells through the same receptor, angiotensin converting enzyme 2 receptor, which results in gastroenteric symptoms and potential fecal-oral transmission. Besides the infection of SARS-CoV-2, the treatments of COVID-19 also contribute to the gastroenteric manifestations due to the adverse drug reactions of anti-COVID-19 drugs. In this review, we update the clinical features, basic studies, and clinical practices of COVID-19-associated gastroenteric manifestations.     

从SARS、MERS到COVID-19--以史为鉴--浅谈影像学在冠状病毒肺炎中的应用价值

在本世纪初的20年里,冠状病毒科病原体导致的严重急性呼吸道综合征、中东呼吸道综合征及新型冠状病毒肺炎暴发性流行,造成了严重的公共卫生灾难。本文聚焦上述冠状病毒科病原体导致肺炎的流行病学特点,影像学检查的价值及限度,新型冠状病毒肺炎的影像表现,与其他常见病毒性肺炎的影像鉴别,有助于提高对新型冠状病毒肺炎的发病机制的认识,增强设备使用的科学性,提升放射科医生的诊断能力,助力临床尽早识别病原体,有效评估疗效及预后,从而助力影像人抗击新型冠状病毒肺炎疫情。     

Clinical features and potential mechanism of coronavirus disease 2019-associated liver injury

Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2, has posed a serious threat to global public health security. With the increase in the number of confirmed cases globally, the World Health Organization has declared the outbreak of COVID-19 an international public health emergency. Despite atypical pneumonia as the primary symptom, liver dysfunction has also been observed in many clinical cases and is associated with the mortality risk in patients with COVID-19, like severe acute respiratory syndrome and Middle East respiratory syndrome. Here we will provide a schematic overview of the clinical characteristics and the possible mechanisms of liver injury caused by severe acute respiratory syndrome coronavirus 2 infection, which may provide help for optimizing the management of liver injury and reducing mortality in COVID-19 patients.     

瑞德西韦治疗冠状病毒感染的研究进展

2019年12月,由2019新型冠状病毒(2019-novel coronavirus,2019-nCoV)感染导致的新型冠状病毒肺炎(coronavirus disease 2019,COVID-19)于我国武汉暴发,成为全球近十几年来,继严重急性呼吸综合征(severe acute respiratory syndrome,SARS)和中东呼吸综合征(Middle East respiratory syndrome,MERS)之后第3次暴发的冠状病毒疫情。本次COVID-19疫情传播迅速、广泛,病毒传染性强,但目前尚无针对2019-nCoV的特异性药物。瑞德西韦(remdesivir)属于核苷类似物抗病毒药,在细胞实验和动物模型上均显示出抗SARS-CoV和抗MERS-CoV活性,且在治疗埃博拉病毒感染的多中心随机对照临床试验中未见明显不良反应。因此,该药被认为是治疗2019-nCoV感染极有潜力的药物。本文对瑞德西韦治疗CoV感染的研发历程和潜在临床应用作一综述。     

新型冠状病毒感染的临床表现及其实验室检测技术进展

新型冠状病毒(SARS-CoV-2)属于冠状病毒属,是一种主要通过呼吸道传播的RNA病毒,具有极高传染性,被世界卫生组织列为对人类危害最严重的病毒之一。目前尚无批准上市的用于预防SARS-CoV-2的疫苗,该病毒导致的2019年新型冠状病毒肺炎(COVID-19)需要通过实验室检测才能明确。为了解SARS-CoV-2的研究进展,该文综述了该病毒的特征、感染的流行病学、实验室检测技术,以期为诊断和防控新型冠状病毒病提供参考。     

新型冠状病毒肺炎相关性急性胰腺炎：证据，挑战与思考

由新型冠状病毒（SARS-CoV-2）感染引起的新型冠状病毒肺炎（COVID-19）自2019年12月发病以来,现已全球大流行。COVID-19除影响呼吸系统外,还可造成全身多系统、多脏器的损害。目前关于COVID-19累及胰腺的证据十分有限,COVID-19患者中急性胰腺炎（AP）的发病率存在不确定性,其临床特征和发病机制也存在诸多疑问。在全球COVID-19流行仍未得到完全控制的背景下,由于目前对COVID-19与AP之间相互作用知之甚少,我们必须警惕他们之间可能存在的联系。临床上诸多治疗程序需要合理化,应采取有效的防护措施,在科学诊治患者的同时有效避免医护人员SARS-CoV-2感染。     

The cardiovascular aspect of COVID-19

The coronavirus disease-2019 (COVID-19), an infectious disease caused by Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2), has hit the world very hard by affecting millions of people across countries hence posing a major health threat on a global scale. This novel virus is thought to enter and cause infection in its host through the attachment of its structural protein known as the S-glycoprotein to angiotensin-converting enzyme 2 (ACE2). Given the rapid spread of COVID-19 with its consequences globally, it is mandatory that health caregivers and researchers across all disciplines abreast themselves with the potential effects that this novel virus may have on their fields and the medical society at large. During the infection, the cardiovascular system is affected by unknown pathomechanistic processes, hence accounting for an increased prevalence of cardiovascular diseases (CVDs) among COVID-19 patients. As cardiovascular researchers, we are more concerned about the cardiovascular aspect of SARS-CoV-2/COVID-19. Hence, this concise review addresses these aspects where CVD as a risk factor of COVID-19, the prevalence of CVDs in COVID-19, and the potential cardiovascular disorders which may evolve owing to COVID-19 are discussed. A better understanding of these issues will be pivotal to improve cardiovascular health during this SARS-CoV-2/COVID-19 pandemic and beyond.     

Recent endemic coronavirus infection is associated with less-severe COVID-19

Four different endemic coronaviruses (eCoVs) are etiologic agents for the seasonal common cold, and these eCoVs share extensive sequence homology with human SARS coronavirus 2 (SARS-CoV-2). Here, we show that individuals with, as compared with those without, a recent documented infection with eCoV were tested at greater frequency for respiratory infections but had a similar rate of SARS-CoV-2 acquisition. Importantly, the patients with a previously detected eCoV had less-severe coronavirus disease 2019 (COVID-19) illness. Our observations suggest that preexisting immune responses against endemic human coronaviruses can mitigate disease manifestations from SARS-CoV-2 infection.