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Clarke Bro posted an update 20 hours, 24 minutes ago
It is probable that pregnant women diagnosed with COVID-19 have no fever before delivery. Their primary initial manifestations were merely low-grade postpartum fever or mild respiratory symptoms. Therefore, the protective measures are necessary on admission; the instant CT scan and real-time reverse-transcriptase polymerase-chain-reaction assay should be helpful in early diagnosis and avoid cross-infection on the occasion that patients have fever and other respiratory signs. © 2020 Wiley Periodicals, Inc.Myocardial infarction (MI) is a common cardiovascular disease characterized by an interruption of blood and oxygen supply to the heart, which results in gradual damage to the myocardial tissue and ultimately heart failure. The role of non-coding RNAs (lncRNAs) in the pathology of MI remains in its infancy, but has been implicated in MI and other heart conditions. For example, expression of a non-coding RNA hypoxia-inducible factor 1 alpha (HIF1A)-antisense RNA 2 (HIF1A-AS2) has previously been linked to coronary heart disease, however, whether HIF1A-AS2 expression is also high in MI has not been addressed. Here we reported that HIF1A-AS2 is upregulated in hypoxia-treated human cardiomyocytes (HMCs) compared with normal cardiomyocytes, and that silenced HIF1A-AS2 inhibited apoptosis and facilitated viability, migration and invasion of HMCs. Our data suggested that in MI, HIF1A-AS2 upregulation was associated with miR-623, which promoted expression of TRIM44. Moreover, by upregulating TRIM44 we were able to remedy the HIF1A-AS2 repression of apoptosis in HMCs. Thus we concluded that cardiomyocytes can be protected against hypoxic-treated injury by knockdown of HIF1A-AS2, which suppresses TRIM44, and that HIF1A-AS2 overexpression is a prognostic indicator of MI. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.Human chondrocytes in expansion culture can become progenitor-like in their ability to proliferate extensively and secrete neocartilage in chondrogenic culture. Sheep are used as a large animal model for cartilage tissue engineering, although for testing progenitor-like chondrocytes it is important that ovine chondrocytes resemble human in the ability to adopt progenitor properties. Here, we investigate whether ovine chondrocytes can adopt progenitor properties as indicated by rapid proliferation in a colony-forming fashion, and high levels of neocartilage secretion in chondrogenic culture. In conditions known to promote expansion of mesenchymal stromal cells, ovine chondrocytes proliferated through approximately 12 population doublings in 10 days. Time-lapse imaging indicated rapid proliferation in a colony-forming pattern. Expanded ovine chondrocytes that were seeded into agarose and cultured in chondrogenic medium accumulated neocartilage over 2 weeks, to a greater extent than primary chondrocytes. These data confirm that ovine chondrocytes resemble human chondrocytes in their ability to acquire progenitor properties that are important for cartilage tissue engineering. Given the broad interest in using progenitor cells to heal connective tissues, next we compared proliferation and trilineage differentiation of ovine chondrocytes, meniscus cells, and tenocytes. Meniscus cells and tenocytes experienced more than 13 population doublings in 10 days. In chondrogenic culture, cartilage matrix accumulation, and gene expression were largely similar among the cell types. All cell types resisted osteogenesis, while expanded tenocytes and meniscal cells were capable of adipogenesis. While ovine connective tissue cells demonstrated limited lineage plasticity, these data support the potential to promote certain progenitor properties with expansion. © 2020 Orthopaedic Research Society. Published by Wiley Periodicals, Inc.Non-O1/non-O139 nontoxigenic Vibrio cholerae associated with cholera-like diarrhea has been reported in Kolkata, India. However, the property involved in the pathogenicity of these strains has remained unclear. We examined the character of 25 non-O1/non-O139 nontoxigenic V. cholerae isolated during 8 years from 2007 to 2014 in Kolkata. Determination of serogroup showed that the serogroups O6, O10, O35, O36, O39, and O70 were represented by two strains in each serogroup, and the remaining isolates belonged to different serogroups. To clear the character of antibiotic resistance of these isolates, the antibiotic resistance test and the gene analysis were performed. According to antimicrobial drug susceptibility testing, 13 strains were classified as drug resistant. Among them, 10 strains were quinolone resistant and 6 of 13 strains were resistance against more than 3 antibiotics. To define the genetic background of the antibiotic character of these strains, we determined whole-genome sequences of these strains. From the analysis of these sequences, it becomes clear that all of quinolone resistance isolates have mutations in quinolone resistance-determining regions. Further search on the genome sequence showed that 4 strains possess class 1 integrons in their genomes, and that three of four integrons are found to be located in their genomic islands. These genomic islands are novel type. This indicates that various integrons containing drug resistance genes are spreading among V. cholerae non-O1/non-O139 strains through the action of newly-generated genomic islands. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.Regenerative Medicine Manufacturing Society (RMMS) is the first and only professional society dedicated toward advancing manufacturing solutions for the field of regenerative medicine. RMMS’ vision is to provide greater patient access to regenerative medicine therapies through innovative manufacturing solutions. Our mission is to identify unmet needs and gaps in regenerative medicine manufacturing and catalyze the generation of new ideas and solutions by working with private and public stakeholders. We aim to accomplish our mission through outreach and education programs and securing grants for public-private collaborations in regenerative medicine manufacturing. This perspective article will cover four impact areas that the society’s leadership team has identified as critical (a) cell manufacturing and scale-up/out, respectively, for allogeneic and autologous cell therapies, (b) standards for regenerative medicine, (c) 3D bioprinting, and (d) artificial intelligence-enabled automation. see more In addition to covering these areas and ways in which the society intends to advance the field in a collaborative nature, we will also discuss education and training.