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一株抗大黄鱼细菌性病原菌的活性海洋真菌的鉴定
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作者 刘辉辉 李书平 +1 位作者 赵倩 赵淑江 《浙江农业学报》 CSCD 北大核心 2012年第5期801-807,共7页
为了研究从浙江省温州市南麂岛近海海域海洋沉积物样品中分离得到的一株具有抗大黄鱼病原菌活性的真菌NJ0104的分类地位,在标准培养条件下,采用传统形态鉴定方法,结合ITS-5.8S rDNA片段PCR扩增和序列测定,建立系统发育树。形态学特征显... 为了研究从浙江省温州市南麂岛近海海域海洋沉积物样品中分离得到的一株具有抗大黄鱼病原菌活性的真菌NJ0104的分类地位,在标准培养条件下,采用传统形态鉴定方法,结合ITS-5.8S rDNA片段PCR扩增和序列测定,建立系统发育树。形态学特征显示菌丝呈树枝状分支,分支较多,无核,有隔膜,瓶体式产孢;ITS序列进行测序全长为1 027 bp。结合形态学特征和GenBank中核酸数据比对分析。结果表明,菌株NJ0104与节菱孢属亲缘关系较近,具有98%以上的相似性,因此将其鉴定为节菱孢属(Arthrinium sp.)。 展开更多
关键词 抗大黄鱼病原菌 抑菌活性 形态学 ITS序列 NJ系统发育树
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COVID-19 Coronavirus: Is Infection along with <i>Mycoplasma</i>or Other Bacteria Linked to Progression to a Lethal Outcome? 被引量:1
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作者 Garth L. Nicolson Gonzalo Ferreira de Mattos 《International Journal of Clinical Medicine》 2020年第5期282-302,共21页
Most patients with COVID-19 disease caused by the SARS-CoV-2 virus recover from this infection, but a significant fraction progress to a fatal outcome. As with some other RNA viruses, co-infection or activation of lat... Most patients with COVID-19 disease caused by the SARS-CoV-2 virus recover from this infection, but a significant fraction progress to a fatal outcome. As with some other RNA viruses, co-infection or activation of latent bacterial infections along with pre-existing health conditions in COVID-19 disease may be important in determining a fatal disease course. Mycoplasma spp. (M. pneumonaie, M. fermentans, etc.) have been routinely found as co-infections in a wide number of clinical conditions, and in some cases this has progressed to a fatal disease. Although preliminary, Mycoplasma pneumoniae has been identified in COVID-19 disease, and the severity of some signs and symptoms in progressive COVID-19 patients could be due, in part, to Mycoplasma or other bacterial infections. Moreover, the presence of pathogenic Mycoplasma species or other pathogenic bacteria in COVID-19 disease may confer a perfect storm of cytokine and hemodynamic dysfunction, autoimmune activation, mitochondrial dysfunction and other complications that together cannot be easily corrected in patients with pre-existing health conditions. The positive responses of only some COVID-19 patients to antibiotic and anti-malaria therapy could have been the result of suppression of Mycoplasma species and other bacterial co-infections in subsets of patients. Thus it may be useful to use molecular tests to determine the presence of pathogenic Mycoplasma species and other pathogenic bacteria that are commonly found in atypical pneumonia in all hospitalized COVID-19 patients, and when positive results are obtained, these patients should treated accordingly in order to improve clinical responses and patient outcomes. 展开更多
关键词 pathogenic MYCOPLASMA SARS-CoV-2 VIRUS COVID-19 Disease Acute Respiratory Distress Syndrome Co-Infection Pneumonia LETHAL INFECTION Mitochondria Cytokines anti-microbial THERAPY Antibiotics Anti-Malarial THERAPY VIRUS BACTERIA
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