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1.
Braz. j. biol ; 83: e247237, 2023. tab, graf
Article in English | MEDLINE, LILACS, VETINDEX | ID: biblio-1339386

ABSTRACT

Abstract Novel coronavirus (nCoV) namely "SARS-CoV-2" is being found responsible for current PANDEMIC commenced from Wuhan (China) since December 2019 and has been described with epidemiological linkage to China in about 221 countries and territories until now. In this study we have characterized the genetic lineage of SARS-CoV-2 and report the recombination within the genus and subgenus of coronaviruses. Phylogenetic relationship of thirty nine coronaviruses belonging to its four genera and five subgenera was analyzed by using the Neighbor-joining method using MEGA 6.0. Phylogenetic trees of full length genome, various proteins (spike, envelope, membrane and nucleocapsid) nucleotide sequences were constructed separately. Putative recombination was probed via RDP4. Our analysis describes that the "SARS-CoV-2" although shows great similarity to Bat-SARS-CoVs sequences through whole genome (giving sequence similarity 89%), exhibits conflicting grouping with the Bat-SARS-like coronavirus sequences (MG772933 and MG772934). Furthermore, seven recombination events were observed in SARS-CoV-2 (NC_045512) by RDP4. But not a single recombination event fulfills the high level of certainty. Recombination mostly housed in spike protein genes than rest of the genome indicating breakpoint cluster arises beyond the 95% and 99% breakpoint density intervals. Genetic similarity levels observed among "SARS-CoV-2" and Bat-SARS-CoVs advocated that the latter did not exhibit the specific variant that cause outbreak in humans, proposing a suggestion that "SARS-CoV-2" has originated possibly from bats. These genomic features and their probable association with virus characteristics along with virulence in humans require further consideration.


Resumo O novo coronavírus (nCoV), nomeadamente "SARS-CoV-2", foi considerado responsável pela pandemia atual iniciada em Wuhan (China) desde dezembro de 2019 e foi descrito com ligação epidemiológica à China em cerca de 221 países e territórios até agora. Neste estudo, caracterizamos a linhagem genética do SARS-CoV-2 e relatamos a recombinação dentro do gênero e subgênero dos coronavírus. A relação filogenética de 39 coronavírus pertencentes a seus quatro gêneros e cinco subgêneros foi analisada usando o método de Neighbour-joining usando MEGA 6.0. Árvores filogenéticas do genoma de comprimento total, várias proteínas (espícula, envelope, membrana e nucleocapsídeo), sequências de nucleotídeos foram construídas separadamente. A recombinação putativa foi testada via RDP4. Nossa análise descreve que o "SARS-CoV-2", embora mostre grande semelhança com as sequências de Bat-SARS-CoVs em todo o genoma (dando semelhança de sequência de 89%), exibe agrupamento conflitante com as sequências de coronavírus do tipo Bat-SARS (MG772933 e MG772934) Além disso, sete eventos de recombinação foram observados em SARS-CoV-2 (NC045512) por RDP4. Mas nem um único evento de recombinação preenche o alto nível de certeza. A recombinação está alojada mais em genes de proteína de pico, principalmente, do que no resto do genoma, indicando que o cluster de ponto de interrupção surge além dos intervalos de densidade de ponto de interrupção de 95% e 99%. Os níveis de similaridade genética observados entre "SARS-CoV-2" e Bat-SARS-CoVs defendem que o último não exibe a variante específica que causa surto em humanos, sugerindo que "SARS-CoV-2" tenha se originado possivelmente de morcegos. Essas características genômicas e sua provável associação com as características do vírus, juntamente com a virulência em humanos, requerem uma consideração mais aprofundada.


Subject(s)
Humans , Animals , Chiroptera , COVID-19 , Phylogeny , Computer Simulation , Genome, Viral/genetics , SARS-CoV-2
2.
Journal of Clinical Hepatology ; (12): 582-586, 2022.
Article in Chinese | WPRIM | ID: wpr-922958

ABSTRACT

Objective To investigate the clinical features of patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Delta variant infection and abnormal liver function in Guangdong Province, China. Methods The patients with SARS-CoV-2 Delta variant infection who belonged to the same chain of transmission in Guangdong Province (Guangzhou and Foshan) and were admitted to Guangzhou Eighth People's Hospital, Guangzhou Medical University from May 21 to June 18, 2021 were enrolled in this study, and the judgment criteria for liver function were alanine aminotransferase (male/female) > 50/40 U/L, aspartate aminotransferase > 40 U/L, total bilirubin > 26 μmol/L, gamma-glutamyl transpeptidase > 60 U/L, and alkaline phosphatase (ALK) > 125 U/L. Abnormality in any one item of the above criteria was defined as abnormal liver function, and such patients were included in analysis (the patients, aged < 18 years, who had a mild or moderate increase in ALP alone were not included in analysis). Clinical data were compared between the patients with normal liver function and those with abnormal liver function, and the etiology and prognosis of abnormal liver function were analyzed. The Mann-Whitney U test was used for comparison of continuous data between two groups; the chi-square test was used for comparison of categorical data between two groups. Results Among the 166 patients with SARS-CoV-2 Delta variant infection, 32 (19.3%) had abnormal liver function with mild-to-moderate increases in liver function parameters, and compared with the normal liver function group, the abnormal liver function group had a significantly higher proportion of critical patients ( χ 2 =38.689, P < 0.001) and significantly higher age and inflammatory cytokines [C-reactive protein type, serum amyloid A, and interleukin-6 (IL-6)](all P < 0.05). Among the 32 patients with abnormal liver function, 13 patients had abnormal liver function on admission (defined as primary group), while 19 patients had normal liver function on admission but were found to have abnormal liver function by reexamination after treatment (defined as secondary group). For the primary group, the evidence of abnormal liver function was not found for 3 patients (3/13, 23.1%), and the possibility of toxic liver injury directly associated with SARS-CoV-2 infection was considered. Among the 19 patients in the secondary group, 9 (47.4%) had mild/common type and 10 (52.6%) had critical type, and all critical patients had the evidence of liver injury indirectly caused by the significant increases in C-reactive protein type, serum amyloid A, and IL-6 and hypoxemia; the evidence of abnormal liver function was not found for only 1 patient (1/19, 5.3%), and the possibility of toxic liver injury directly associated with SARS-CoV-2 infection was considered. All 32 patients with abnormal liver function had [JP2]significant reductions in liver function parameters after treatment including liver protection. Conclusion As for the patients with SARS-CoV-2 Delta variant infection who belong to the same chain of transmission in Guangdong Province, the critical patients show a significantly higher proportion of patients with abnormal liver function than the patients with other clinical types, and other factors except SARS-CoV-2 infection and indirect injury caused by SARS-CoV-2 infection are the main cause of liver injury.

3.
Organ Transplantation ; (6): 169-2022.
Article in Chinese | WPRIM | ID: wpr-920846

ABSTRACT

In recent years, organoid technology has become one of the major technological breakthroughs in biomedical field. As miniature organs constructed by three-dimensional culture of tissue stem cells in vitro, organoids are highly consistent with the source tissues in terms of tissue structures, cell types and functions, which serve as an ideal model for biomedical basic research, drug research and development and clinical precision medicine, and show important potential value in regenerative medicine. Organ transplantation is one of the most effective approaches to treat organ failure. However, the source of donor organs is currently limited, which could not meet the patients' needs. Identifying suitable graft substitutes is the key to breaking through the predicament. Organoids could be derived from the autologous tissues of patients. Multiple studies have demonstrated that organoids possess potent transplantation and repairing capabilities and may effectively avert the risk of immune rejection and tumorigenicity, etc. In this article, the development process and main application directions of organoid technology were summarized, and the application prospect and challenges of organoids in organ transplantation were reviewed and predicted.

4.
Cad. Bras. Ter. Ocup ; 30: e3019, 2022.
Article in Portuguese | LILACS-Express | LILACS, INDEXPSI | ID: biblio-1355949

ABSTRACT

Resumo A pandemia de COVID-19 teve sério impacto ocupacional em pessoas com transtornos mentais pré-existentes. Para prestar o cuidado nesse contexto, os grupos de telessaúde foram uma opção terapêutica para terapeutas ocupacionais para o cuidado em saúde mental. Este artigo apresenta uma experiência de terapia ocupacional com grupos de telessaúde no Brasil, sustentada pelo Método Terapia Ocupacional Dinâmica, buscando discutir o uso da tecnologia durante a pandemia de Covid-19, além dos limites e das potencialidades do cuidado em terapia ocupacional diante da necessária mudança do trabalho com grupos. Trata-se de análise crítica da prática sustentada por uma perspectiva de produção de evidências baseadas na prática por meio de uma parceria colaborativa entre profissionais e acadêmicos do Brasil e do Reino Unido. Os profissionais refletiram sobre as habilidades necessárias no contexto online, destacando suas preocupações iniciais e suas descobertas neste novo cenário de prática. A prática de cuidado em grupo de terapia ocupacional em telessaúde na prática de saúde mental requer o uso de múltiplas ferramentas digitais. Além disso, a(o) terapeuta ocupacional precisa entender das questões de desigualdade digital (acesso digital e/ou habilidades digitais), aprimorar-se digitalmente para atender às necessidades das pessoas sob seu acompanhamento, além de possuir referenciais teórico-metodológicos claros que permitam sustentar práticas em telessaúde.


Abstract COVID-19 pandemic had a serious occupational impact on people with pre-existing mental disorders. To deliver care in this context, telehealth groups were a therapeutic option for occupational therapists for mental health care. This paper presents an occupational therapy experience with telehealth groups in Brazil, sustained by the Dynamic Occupational Therapy Method, seeking to discuss the use of technology during the COVID-19 outbreak, the limits and potential of occupational therapy in the face of the necessary change in work with groups. The paper is a critical analysis of practice sustained by a practice-based evidence perspective through a collaborative partnership between practitioners and academics from Brazil and the UK. Practitioners reflected on their professional skills in an online context, highlighting their initial concerns and their discoveries within this new practice scenario. The delivery of telehealth groupwork in occupational therapy in mental health practice requires multiple digital tools, and the occupational therapist needs to understand digital inequity issues (digital access or skills), be digitally upskilled to meet client needs, and also be guided by clear occupational therapy theoretical and methodological frameworks that underpin telehealth practices.

5.
Rev. cuba. med ; 60(2): e1638,
Article in Spanish | LILACS, CUMED | ID: biblio-1280352

ABSTRACT

Introducción: Existen interrogantes sobre el daño cardiovascular que ocasiona la infección por coranavirus-2 (SARS-CoV-2), que causa la enfermedad conocida como la COVID-19, lo que motiva el interés por el tema. Objetivo: Describir las manifestaciones cardiovasculares en pacientes con infección por coronavirus-2. Método: Entre mayo y septiembre de 2020, en la Universidad de Ciencias Médicas de Guantánamo se realizó una revisión bibliográfica narrativa mediante el estudio documental de revisiones sistemáticas y artículos originales relacionados con las manifestaciones cardiovasculares de la COVID-19. La búsqueda se realizó en las bases de datos bibliográficas Pubmed, Infomed, Medline, Science Direct, y SciELO. Se utilizó el buscador Google Académico, y las palabras clave y conectores: COVID-19 AND cardiovascular disease; SARS-CoV-2 AND cardiovascular disease, y los términos en español. La extracción de datos se realizó según una planilla que resumía las preguntas de interés de acuerdo al objetivo de la revisión. Desarrollo: Se reconoce que la respuesta inflamatoria sistémica desencadenada el SARS-CoV-2 puede dañar el miocardio. Las manifestaciones cardiovasculares son frecuentes y variadas, las más comunes son la miocarditis, insuficiencia cardiaca, arritmias cardiacas y síndrome coronario agudo. Aquellos individuos con enfermedad cardiovascular tienen riesgo de descompensación, mayor riesgo de daño miocárdico por esta infección y mayor morbimortalidad. Conclusión: La pandemia COVID-19 determina un daño cardiovascular que se expresa por la presentación de miocarditis, insuficiencia cardiaca, arritmias cardiacas, síndrome coronario agudo, derrame pericárdico y taponamiento cardiaco; manifestaciones más comunes en los pacientes con antecedentes de enfermedad cardiovascular, y que desfavorecen su pronóstico(AU)


Introduction: There are questions around the cardiovascular damage caused by coranavirus-2 (SARS-CoV-2) infection, which causes the disease known as COVID-19, which motivates interest in the subject. Objective: To describe the cardiovascular manifestations in COVID-19 disease. Method: A narrative bibliographic review was carried out through the documentary study of systematic reviews and original articles related to the cardiovascular manifestations of COVID-19, from May to September 2020, at the University of Medical Sciences in Guantánamo. The search was carried out in the bibliographic databases Pubmed, Infomed, Medline, Science Direct, and SciELO. Google Academic search engine was used, and the keywords and connectors were COVID-19 AND cardiovascular disease; SARS-CoV-2 AND cardiovascular disease, and the terms in Spanish. Data extraction was carried out according to a template that summarized the questions of interest according to the objective of this review. Findings: It is recognized that the systemic inflammatory response triggered by SARS-CoV-2 can damage the myocardium. Cardiovascular manifestations are frequent and varied, the most common are myocarditis, heart failure, cardiac arrhythmias, and acute coronary syndrome. Those individuals with cardiovascular disease are at risk of decompensation, increased risk of myocardial damage from this infection, and increased morbidity and mortality. Conclusion: The COVID-19 pandemic determines cardiovascular damage that is expressed by the presentation of myocarditis, heart failure, cardiac arrhythmias, acute coronary syndrome, pericardial effusion and cardiac tamponade; most common manifestations in patients with a history of cardiovascular disease, which conditions unfavorable prognosis(AU)


Subject(s)
Humans , Cardiovascular Diseases/etiology , Coronavirus Infections/epidemiology , COVID-19/complications
6.
Rev. medica electron ; 43(2): 3033-3046, mar.-abr. 2021. tab, graf
Article in Spanish | LILACS, CUMED | ID: biblio-1251924

ABSTRACT

RESUMEN Introducción: la pandemia cambió el mundo y también el comportamiento de la provincia de Matanzas en los primeros cien días desde que apareció el primer caso en Cuba. Objetivo: caracterizar los factores sociodemográficos y clínico-epidemiológicos de los 207 pacientes confirmados con covid-19 en la provincia de Matanzas. Materiales y métodos: es una investigación descriptiva, longitudinal. Se estudió el comportamiento de los 207 pacientes positivos por covid-19 en la provincia de Matanzas. Los datos se tomaron a partir del 11 de marzo de 2020, fecha en que aparecen los primeros casos en Cuba, hasta el 18 de junio, en que se cumplieron cien días de la pandemia. Se analizaron factores sociodemográficos, como edad, sexo y lugar de convivencia, y factores clínico-epidemiológicos, como comorbilidades y fuente de infestación de los pacientes positivos. Resultados: predominaron los casos activos en los municipios Matanzas y Cárdenas, con dominio del sexo femenino y de las edades entre 40 y 59 años. La forma más frecuente de contagio fue la interna, y predominó el número de pacientes recuperados. Las comorbilidades de mayor incidencia en las muertes de pacientes de covid fueron la hipertensión arterial y la diabetes mellitus. Conclusiones: durante los primeros cien días de la pandemia en Cuba, el comportamiento varió en la provincia de Matanzas, motivado por los eventos de transmisión local abiertos en el territorio (AU).


ABSTRACT Introduction: the pandemic changed the world and also behavior in the province of Matanzas at 100 days from the first case in Cuba. Objective: to characterize socio-demographic and clinical-epidemiological factors of the 207 COVID-19-confirmed patients in the province of Matanzas. Materials and methods: this is a longitudinal, descriptive research where the behavior of the 207 COVID-19-positive patients found in the province of Matanzas was studied. Data were collected beginning from March 11, 2020, when the first cases ocurred in Cuba and until June 18, when it turned 100 days with the presence of cases infected with COVID-19. The authors analyzed socio-demographic factors, such as age, sex, living place, and clinical-epidemiological factors such as positive-patients comorbidities and infection source. Results: active cases predominated in the municipalities of Matanzas and Cardenas, with predominance of females and 40-59 years ages; the most frequent infection form was the internal one; recovered patients predominated, and as death causes prevailed several comorbidities such as arterial hypertension and diabetes mellitus. Conclusions: during the first 100 days of epidemic in Cuba, the behavior varied in the province due to the local transmission events opened in the territory (AU).


Subject(s)
Humans , Male , Female , Coronavirus Infections/epidemiology , Pandemics/prevention & control , Patient Isolation/methods , Patients , Coronavirus Infections/diagnosis , Coronavirus Infections/rehabilitation , Aftercare/methods , Cuba
7.
Ciênc. Saúde Colet ; 26(2): 669-692, fev. 2021. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1153776

ABSTRACT

Resumo Acumulam-se evidências de que o uso de máscaras é uma medida indispensável de proteção à COVID-19, devido ao alto poder de transmissão do novo coronavírus por via respiratória, inclusive por indivíduos assintomáticos. Por sua vez, o uso das máscaras de tecido em locais públicos tem se consolidado como medida adicional de proteção às medidas de distanciamento social e higienização das mãos. Objetivou-se sistematizar as evidências científicas que justificam o amplo uso de máscaras de tecido como prevenção à COVID-19 e descrever a evolução dos posicionamentos contrários ou favoráveis ao seu uso em ambientes extradomiciliares, diante do avanço da pandemia do novo coronavírus pelo mundo. A triagem de artigos e documentos oficiais do Brasil e de outros países indica que o uso de máscaras em locais públicos tornou-se uma intervenção essencial graças ao potencial de reduzir a velocidade de propagação do novo coronavírus. Recomenda-se que o poder público adote estratégias para aumentar a oferta deste produto e fomente estudos para avaliação do impacto da medida no controle da pandemia no Brasil. É imperativo assegurar disponibilidade de máscaras a grupos socioeconomicamente desfavorecidos e garantir que determinados grupos raciais não sejam estigmatizados diante do uso de máscaras em ambientes extradomiciliares.


Abstract There is increasing evidence that the use of masks is an indispensable protective measure against COVID-19, given the high transmissibility of the new coronavirus through the respiratory system, including by asymptomatic individuals. The use of cloth masks in public places has been established as a protective measure to be adopted alongside social distancing and hand hygiene. This narrative review aims to systematize the scientific evidence that informs the widespread use of cloth masks as a preventive measure against COVID-19 and to describe the evolution of positions contrary to or in favor of its use outside the home, in view of the advance of the new coronavirus pandemic globally. The scientific articles, technical notes, governmental decrees and other documents analyzed indicate that widespread use of masks has the potential to reduce the spread of the new coronavirus. We recommend that the Brazilian government adopt strategies to increase the supply of reusable cloth masks to the public, especially to vulnerable populations and to support studies on the impact of this measure to control the pandemic in the country. Finally, it is imperative to ensure that use of masks does not exacerbate stigmatization of racial groups that already face prejudice.


Subject(s)
Humans , Coronavirus Infections/prevention & control , Masks , Textiles , Public Facilities , Brazil/epidemiology , Global Health , Coronavirus Infections/epidemiology
8.
Article in Chinese | WPRIM | ID: wpr-904489

ABSTRACT

Objective:To conduct epidemiological investigation of a family cluster of coronavirus disease 2019 (COVID-19) in Fangshan District, Beijing, so as to provide reference and scientific basis for the strategy of prevention and control. Methods:Based on the "Prevention and Control Plan for COVID-19 (Third Edition)"issued by the National Health Commission of China, two cases from the same family were studied by field epidemiological investigation method. Sputum and/or throat swab specimens were collected and sent to the laboratory of Fangshan District Center for Disease Control and Prevention (CDC) for nucleic acid detection of 2019 novel coronavirus (2019-nCoV). Tracking close contacts and isolation observation were conducted. Results:Both sputum and throat swab specimens of case 1 were positive for 2019-nCoV nucleic acid on February 3rd, 2020. Case 2 (wife of case 1) received screening as a close contact, and throat swab specimen was positive on February 4th, 2020. Therefore, it was determined to be a family cluster. The epidemic was effectively controlled after a series of measures, including isolation treatment, medical observation according to management of close contact and terminal disinfection of residence. Conclusion:The CDC professionals should strengthen monitoring of new findings, comprehensively analyze case data based on the latest research trends, improve professional sensitivity, and conduct timely screening to detect cases as soon as possible for the prevention of further epidemic spreading.

9.
Organ Transplantation ; (6): 376-2021.
Article in Chinese | WPRIM | ID: wpr-881520

ABSTRACT

Objective At present, the novel coronavirus pneumonia (COVID-19) pandemic is still raging in certain regions around the globe, and the prevention and control of the pandemic should be strengthened. Under the challenges of respective social environment and allocation of medical resources, and support from the inertia and inherent productivity of the system on which the industry depends, extensive attempts are being delivered to push forward the work of organ donation and transplantation in each country. Under the guidance of national experts and committee members, Shanxi Provincial Human Organ Procurement and Allocation Service Center was established on August 28, 2018 approved by the former Shanxi Provincial Health and Family Planning Commission. It is the only independent non-profit medical institution in Shanxi Province. In this article, the system construction of citizen's organ donation and transplantation fitting national and provincial conditions was further explored according to the data analysis of organ donation and transplantation in the United States and Spain during the COVID-19 pandemic combined with the implementation of organ donation work in Shanxi Provincial Human Organ Procurement and Allocation Service Center.

10.
Article in Chinese | WPRIM | ID: wpr-911370

ABSTRACT

Objective:To analyze the correlation between serum uric acid and clinical features of patients with novel coronavirus pneumonia(COVID-19).Methods:A total of 200 patients with COVID-19 admitted to Wuhan Lei Shen Shan hospital from January 20, 2020 to April 10, 2020 were included in this retrospective cohort study. The patients were divided into the hyperuricemia group and the non-hyperuricemia group. The data of patients were collected through electronic medical record system. SPSS 19.0 and Graphpad Prism 8.0 statistical software were used to compare clinical features, laboratory results, survival time, and prognosis of patients between hyperuricemia and non-hyperuricemia groups.Results:Compared with the non-hyperuricemia group, the hyperuricemia group showed a higher BMI and mortality( P<0.05)as well as higher white blood cell count, lymphocytes, serum creatinine, creatine kinase, cystatin C, myoglobin, interleukin(IL)-6 levels( P<0.05). Serum uric acid level was positively correlated with lymphocytes, hemoglobin, albumin, creatinine, creatine kinase, cystatin C, D-dimer levels while negatively correlated with IL-2 receptor and IL-8. The patients with hyperuricemia had significantly shorter survival time and worse prognosis than those without hyperuricemia( P=0.04). Conclusion:COVID-19 patients with hyperuricemia show higher mortality and worse prognosis compared with the patients with non-hyperuricemia.

11.
Chinese Journal of Geriatrics ; (12): 1381-1385, 2021.
Article in Chinese | WPRIM | ID: wpr-911023

ABSTRACT

Objective:We aimed to compare the characteristics between elderly and non-elderly corona virus disease 2019(COVID-19)patients, especially patients with different severity, in order to achieve a good understanding of elderly patients' clinical presentations.Methods:Records of patients diagnosed with COVID-19 and hospitalized at Tongji Hospital from February 9, 2020 to February 29, 2020 were retrospectively reviewed.They were divided into the elderly(≥65 years old)and non-elderly(<65 years old)groups according to age.Data on morbidity, underlying diseases, clinical symptoms, laboratory test results, imaging characteristics and hospitalization outcomes were collected retrospectively and analyzed statistically.Results:A total of 51 patients were enrolled with 21 in the elderly group(41.2%), with an average age of(71.9±6.4)years, and 30 non-elderly patients(58.8%). There were 13 elderly patients(61.9%)exhibiting fever, representing a lower rate than in the non-elderly patients(27 or 90%)( χ2=5.764, P=0.016). Bilateral pneumonia was present on chest CT scans in all of the elderly patients, while it was seen in 83.3% of the non-elderly patients( χ2=3.880, P=0.049). The proportion of elderly patients with coronary heart disease(61.9%)or hypertension(26.8%)was higher than that of non-elderly patients.The usage rates of antiviral drugs, systemic hormones and antibiotics were all higher and the causes of death were all due to multiple organ failure in elderly patients. Conclusions:Elderly patients with COVID-19 possess special characteristics, showing atypical symptoms, and multiple concomitant diseases may be the reason for their poor clinical prognosis.More rigorous monitoring and careful treatment should be conducted for elderly COVID-19 patients.

12.
Article in Chinese | WPRIM | ID: wpr-909820

ABSTRACT

Objective:To analyze the evolutionary characteristics and variations of 2019 novel coronavirus (2019-nCoV) strains imported from abroad in Henan Province.Methods:A total of 16 imported cases of coronavirus disease 2019 (COVID-19) reported in Henan Province from May to December 2020 were enrolled. The throat swab specimens from the patients were collected and sent to the Henan Provincial Center for Disease Control and Prevention for whole genome sequencing. Taking SARS-CoV-2 Wuhan-Hu-1 published in Global Initiative on Sharing All Influenza Data (GISAID) as the reference sequence, the sequences were aligned and analyzed by MEGA X, and the phylogenetic tree was constructed by the maximum likelihood method.Results:Among 16 cases, 13 cases were imported from Russia, two cases were imported from Myanmar, and one case was imported from Ukraine. A total of 16 strains of 2019-nCoV genomes with the lengths of 29 804 bp to 29 882 bp were obtained. A total of 145 nucleotide mutations and 80 amino acid mutations were detected. Nucleotide variations of C241T, C3037T, C14408T, A23403G and the amino acid variation of D614G in spike protein were detected in all sequences. Meanwhile, insertion A at the site of 29704 was found in BetaCov/HEN02/Human/2020, BetaCov/HEN04/Human/2020 and BetaCov/HEN05/Human/2020. Deletion variation was not found. Phylogenetic analysis showed that there was no correlation between the 16 strains and currently epidemic variants of concern (VOC) .Conclusion:From May to December 2020, the detection of viral genome mutations in the imported cases of Henan Province shows randomness and diversity, while the strains are not VOC.

13.
Article in Chinese | WPRIM | ID: wpr-909819

ABSTRACT

Objective:To investigate the viral molecular mutations of 2019 novel coronavirus (2019-nCoV) and host adaptability in Suzhou City.Methods:The throat swab specimens from nine local cases and six imported cases with 2019-nCoV viral nucleic acid test positive in Suzhou City were sequenced for the whole genome of the virus, and the Wuhan-Hu-1 strain was used as the reference sequence for alignment and analysis. The phylogenetic tree of the viral whole genome sequence was constructed by MEGA 7.0 software.Results:According to the Chinese typing method, Nextstrain typing method, Pangolin classification method and Global Initiative on Sharing All Influenza Data (GISAID) typing method, the 15 2019-nCoV genome sequences could be divided into seven types, six types, eight types and five subtypes, respectively. Compared with Wuhan-Hu-1 strain, the median number of amino acid sequence mutation sites based on nucleotide translation was three (ranging from 0 to 12). D614G mutation of spike protein was identified from all six imported viral strains, which could enhance the transmissibility. No Alpha, Beta, or Gamma mutants, which also could enhance the transmissibility, was found in the genomic sequences of the imported cases. The median number of nucleotide mutation sites in 15 sequences was eight (ranging from three to 23).Conclusions:2019-nCoV is constantly mutating, and a variety of evolutionary lineages/genotypes have been derived. All imported viruses in Suzhou City carry mutations that can increase infectivity.

14.
Chinese Critical Care Medicine ; (12): 1141-1144, 2021.
Article in Chinese | WPRIM | ID: wpr-909470

ABSTRACT

2019 novel coronavirus (2019-nCoV) Delta variant of concern (VOC) is one of the variants of 2019-nCoV, which has the characteristics of strong transmission, high pathogenicity, and rapid progression. 2019-nCoV Delta VOC has caused a global pandemic. Understanding the characteristics of 2019-nCoV Delta VOC and implementing targeted control measures are important aspects of controlling the pandemic. In this paper, the characteristics and control measures of 2019-nCoV Delta VOC were reviewed.

15.
Organ Transplantation ; (6): 506-2021.
Article in Chinese | WPRIM | ID: wpr-886777

ABSTRACT

Lung transplantation has been advanced for nearly half a century around the globe, and it has been developed rapidly for over 20 years in China. The field of lung transplantation in China has been gradually integrated into the international community. The outbreak of novel coronavirus pneumonia (COVID-19) in 2020 brought big challenges, as well as diverted the worldwide attention to the development of lung transplantation in China, accelerating international communication and cooperation. With the steadily deepening of clinical and basic research on lung transplantation for severe cases of COVID-19, organ transplant physicians have deepened the understanding and thinking of the maintenance of donors, selection of elderly and pediatric candidates, and perioperative management of recipients, as the future perspective of lung transplantation in China. For interdisciplinary research related to lung transplantation, it is necessary to carry out multi-center clinical trials with qualified study design and constantly promote the theoretic and practical innovation.

16.
Article in Chinese | WPRIM | ID: wpr-878998

ABSTRACT

Coronavirus disease 2019(COVID-19) refers to the pneumonia caused by novel coronavirus(2019-nCoV) infection in 2019. It is highly infectious, with quick spreading and a wide range of impact. It has been broken out in many countries around the world and has become a public health emergency of international concern. Chinese medicine has a long history in treating plague, and viral disease is the clinical advantage in Chinese medicine. Under the premise that there is currently no specific drug treatment, Chinese medicine has achieved certain effects in the treatment of COVID-19, which has attracted much attention and has been upgraded to a national strategy. Regarding the treatment of COVID-19 with Chinese medicine, it is believed that in terms of the name of Chinese medicine, the modern connotation of "uniform of typhoid and febrile disease" should be re-recognized, and it is advisable to use drugs based on specific clinical prescriptions and indications. In terms of pathogenesis, the COVID-19 has the pathogenesis rules including from the mild to severe conditions, from the surface to the inside, from the excess syndrome to the deficiency syndrome. We should pay attention to the Taiyang syndrome damaged by wet disease in initial stage, Shaoyang syndrome complicated with Yangming syndrome in the middle stage, phlegm-heat obstructing lung in critical period, lung and spleen deficiency in the recovery stage. In terms of clinical treatment strategies, Dayuan Yin is recommended to induce sweat and disperse the stasis in early stage. Xiaochaihu Decoction and Maxing Shigan Decoction is used to relieve both exterior and interior symptoms in middle stage. In critical stage, Tingli Dazao Xiefei Decoction, Weijing Decoction, Xuanbai Chengqi Decoction, Xiaoxianxiong Decoction, and Sanzi Yangqin Decoction are considered to reduce phlegm and clear heat. We should pay attention to nourishing Qi and strengthening the spleen by Zhuye Shigao Decoction, Sha-shen Maidong Decoction, and Liujunzi Decoction in the later recovery period. It shall be noted that, no matter in the initial mild stage, the middle and critical stages, or in the later recovery stage, Chinese medicine plays an important role, including preventing mild to severe disease, shortening the fever time, improving cough symptoms, increasing blood oxygen saturation and reducing mortality. Many studies have shown that the classical herbal formulae can alleviate the cytokine storm, regulate the immune imbalance, and produce the potential effect of synergistic treatment for COVID-19 through multiple components, multiple targets, and multiple pathways.


Subject(s)
COVID-19 , Drugs, Chinese Herbal/therapeutic use , Humans , Medicine, Chinese Traditional , SARS-CoV-2 , Syndrome
17.
Organ Transplantation ; (6): 169-2021.
Article in Chinese | WPRIM | ID: wpr-873726

ABSTRACT

Renal transplantation is the optimal approach to improve the quality of life and restore normal life for patients with end-stage renal diseases.With the development of medical techniques and immunosuppressants, the shortterm survival of renal graft has been significantly prolonged, whereas the long-term survival remains to be urgently solved.Renal ischemia-reperfusion injury (IRI), acute rejection, chronic renal allograft dysfunction, renal fibrosis and other factors are still the major problems affecting the survival of renal graft.Relevant researches have always been hot spots in the field of renal transplantation.Meantime, 2020 is an extraordinary year.The novel coronavirus pneumonia (COVID-19) pandemic severely affects the development of all walks of life.Researches related to renal transplantation have also sprung up.In this article, the frontier hotspots of clinical and basic studies related to renal transplantation and the COVID-19 related researches in the field of renal transplantation in China were reviewed, aiming to provide novel therapeutic ideas and strategies.

18.
Article in Chinese | WPRIM | ID: wpr-873573

ABSTRACT

@#Coronavirus is an important pathogen of humans and animals. Among them, the novel coronavirus disease (COVID-19) breaking out in 2019 has brought a fatal threat to human health. The host"s innate immune response is the host"s first line of defense against pathogen invasion, but an excessive immune response can also aggravate viral infection and pathological damage. The immune escape of coronavirus is a critical pathogenic mechanism causing death. This work mainly reviews the pathogenic mechanism of coronavirus immune escape from several aspects such as host immunosensor, interferon, cytokine and coronavirus antagonizing host immune response, which provide a theoretical reference for the development of anti-coronavirus drugs.

19.
Article in Chinese | WPRIM | ID: wpr-873558

ABSTRACT

Objective To analyze the epidemiological characteristics of COVID-19 cases reported in Xianyang City from January to February 2020. Methods We retrospectively studied 17 COVID-19 patients diagnosed in Xianyang Central Hospital. The patients were characterized clinically and epidemiologically. Results The 17 patients included 10 male and 7 female, with an average age of(39.59±17.31)years. The median interval of time between onset and diagnosis was four days(1-10 days), whereas the median duration of COVID-19 was 16 days(3-23 days). Of the patients, six were mild, 10 were pneumonia, and one was severe. A total of 15 patients had fever as the onset, accompanied by fatigue, sore throat, sputum, vomit, muscle soreness; the other two patients were asymptomatic. There were no complications documented in all the patients. Patients had low levels of white blood cells and lymphocytes. Chest CT scan showed diverse diffuse ground-glass shadow. Eleven patients had travel history in Wuhan before the onset, four patients had contact with people who had travel history or residence history in Wuhan, and the other two patients did not report epidemiological exposure history. In addition, four of the 17 patients were clustered cases. Conclusion General population is susceptible to COVID-19. The majority of the confirmed cases have epidemiological exposure history. Routine examination, including white blood cell, lymphocyte count and CT scan may facilitate early diagnosis.

20.
Braz. j. infect. dis ; 25(2): 101570, 2021. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1278572

ABSTRACT

ABSTRACT SARS-CoV-2 has a high risk of outbreak in long-term skilled nursing facilities (SNF). Coronavirus disease (COVID-19) has high mortality rates among the elderly with chronic health conditions. Following identification of COVID-19 index case in a SNF, serial point-prevalence was implemented with reverse transcription-polymerase chain reaction (RT-PCR) and immunochromatographic assays. Active surveillance and early isolation of infected patients were implemented. Out of 23 SNF residents and 26 healthcare workers (HCW), 18 (78%) and 12 (46%) tested positive for SARS-CoV-2, respectively. High proportion (38%) of positive patients were asymptomatic and RT-PCR was positive up to six days before symptoms. Five (21.74%) residents were hospitalized with COVID-19, and 2 (9%) died; only 1 (4%) HCW needed to be hospitalized and no staff members died. Active surveillance helped COVID-19 control and management in a SNF. Testing symptomatic individuals only may fail to identify and isolate all persons contributing to transmission. In high-risk elderly, only symptoms screening may not be enough for outbreak control.

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