Animals ; China ; Cloning, Organism ; history ; History, 20th Century

Objective To explore the effect of continuous quality improvement nursing on HAMA, HAMD score and pain in patients with cervical spine fracture.Methods A total of 120 cervical spine fracture patients in our hospital were randomly divided into control group (n=60) and experimental group(n=60).The patients of control group received routine nursing care interventions while the patients of experimental group received continuous quality improvement nursing intervention.The Hamilton Anxiety Scale (HAMA), Hamilton Depression Scale (HAMD) score, visual analogue scale and nursing quality score were compared between the two groups before and after the intervention.Results Compared with intervention before, the scores of HAMD and HAMA in the two groups were decreased after treatment (P<0.05).The scores of HAMD and HAMA in the experimental group were significantly lower (P<0.05).Compared with intervention before, the visual analogue scores of the two groups were decreased in different degrees after intervention, and was significantly lower in experimental group than that of the control group (P<0.05).The quality of nursing was significantly higher than that of the control group (P<0.05).Conclusion Compared with conventional care, continuous quality improvement in the treatment of patients with cervical fractures can not only effectively improve the patient''s pain, but also help to improve negative emotions, and improve the quality of care.So it''s worthy of clinical promotion.

Objective To explore the effect of continuous quality improvement nursing on HAMA, HAMD score and pain in patients with cervical spine fracture.Methods A total of 120 cervical spine fracture patients in our hospital were randomly divided into control group (n=60) and experimental group(n=60).The patients of control group received routine nursing care interventions while the patients of experimental group received continuous quality improvement nursing intervention.The Hamilton Anxiety Scale (HAMA), Hamilton Depression Scale (HAMD) score, visual analogue scale and nursing quality score were compared between the two groups before and after the intervention.Results Compared with intervention before, the scores of HAMD and HAMA in the two groups were decreased after treatment (P<0.05).The scores of HAMD and HAMA in the experimental group were significantly lower (P<0.05).Compared with intervention before, the visual analogue scores of the two groups were decreased in different degrees after intervention, and was significantly lower in experimental group than that of the control group (P<0.05).The quality of nursing was significantly higher than that of the control group (P<0.05).Conclusion Compared with conventional care, continuous quality improvement in the treatment of patients with cervical fractures can not only effectively improve the patient''s pain, but also help to improve negative emotions, and improve the quality of care.So it''s worthy of clinical promotion.

Sex reversal, representing extraordinary sexual plasticity during the life cycle, not only triggers reproduction in animals but also affects reproductive and endocrine system-related diseases and cancers in humans. Sex reversal has been broadly reported in animals; however, an integrated resource hub of sex reversal information is still lacking. Here, we constructed a comprehensive database named ASER (Animal Sex Reversal) by integrating sex reversal-related data of 18 species from teleostei to mammalia. We systematically collected 40,018 published papers and mined the sex reversal-associated genes (SRGs), including their regulatory networks, from 1611 core papers. We annotated homologous genes and computed conservation scores for whole genomes across the 18 species. Furthermore, we collected available RNA-seq datasets and investigated the expression dynamics of SRGs during sex reversal or sex determination processes. In addition, we manually annotated 550 in situ hybridization (ISH), fluorescence in situ hybridization (FISH), and im-munohistochemistry (IHC) images of SRGs from the literature and described their spatial expression in the gonads. Collectively, ASER provides a unique and integrated resource for researchers to query and reuse organized data to explore the mechanisms and applications of SRGs in animal breeding and human health. The ASER database is publicly available at http://aser.ihb.ac.cn/.

Gene expression labeling and conditional manipulation of gene function are important for elaborate dissection of gene function. However, contemporary generation of pairwise dual-function knockin alleles to achieve both conditional and geno-tagging effects with a single donor has not been reported. Here we first developed a strategy based on a flipping donor named FoRe to generate conditional knockout alleles coupled with fluorescent allele-labeling through NHEJ-mediated unidirectional targeted insertion in zebrafish facilitated by the CRISPR/Cas system. We demonstrated the feasibility of this strategy at sox10 and isl1 loci, and successfully achieved Cre-induced conditional knockout of target gene function and simultaneous switch of the fluorescent reporter, allowing generation of genetic mosaics for lineage tracing. We then improved the donor design enabling efficient one-step bidirectional knockin to generate paired positive and negative conditional alleles, both tagged with two different fluorescent reporters. By introducing Cre recombinase, these alleles could be used to achieve both conditional knockout and conditional gene restoration in parallel; furthermore, differential fluorescent labeling of the positive and negative alleles enables simple, early and efficient real-time discrimination of individual live embryos bearing different genotypes prior to the emergence of morphologically visible phenotypes. We named our improved donor as Bi-FoRe and demonstrated its feasibility at the sox10 locus. Furthermore, we eliminated the undesirable bacterial backbone in the donor using minicircle DNA technology. Our system could easily be expanded for other applications or to other organisms, and coupling fluorescent labeling of gene expression and conditional manipulation of gene function will provide unique opportunities to fully reveal the power of emerging single-cell sequencing technologies.
Alleles ; Animals ; CRISPR-Cas Systems ; DNA End-Joining Repair ; DNA, Circular/metabolism* ; Embryo, Nonmammalian ; Gene Editing/methods* ; Gene Knock-In Techniques ; Gene Knockout Techniques ; Genes, Reporter ; Genetic Loci ; Genotyping Techniques ; Green Fluorescent Proteins/metabolism* ; Integrases/metabolism* ; Luminescent Proteins/metabolism* ; Mutagenesis, Insertional ; Single-Cell Analysis ; Zebrafish/metabolism*

Mammals exhibit limited heart regeneration ability, which can lead to heart failure after myocardial infarction. In contrast, zebrafish exhibit remarkable cardiac regeneration capacity. Several cell types and signaling pathways have been reported to participate in this process. However, a comprehensive analysis of how different cells and signals interact and coordinate to regulate cardiac regeneration is unavailable. We collected major cardiac cell types from zebrafish and performed high-precision single-cell transcriptome analyses during both development and post-injury regeneration. We revealed the cellular heterogeneity as well as the molecular progress of cardiomyocytes during these processes, and identified a subtype of atrial cardiomyocyte exhibiting a stem-like state which may transdifferentiate into ventricular cardiomyocytes during regeneration. Furthermore, we identified a regeneration-induced cell (RIC) population in the epicardium-derived cells (EPDC), and demonstrated Angiopoietin 4 (Angpt4) as a specific regulator of heart regeneration. angpt4 expression is specifically and transiently activated in RIC, which initiates a signaling cascade from EPDC to endocardium through the Tie2-MAPK pathway, and further induces activation of cathepsin K in cardiomyocytes through RA signaling. Loss of angpt4 leads to defects in scar tissue resolution and cardiomyocyte proliferation, while overexpression of angpt4 accelerates regeneration. Furthermore, we found that ANGPT4 could enhance proliferation of neonatal rat cardiomyocytes, and promote cardiac repair in mice after myocardial infarction, indicating that the function of Angpt4 is conserved in mammals. Our study provides a mechanistic understanding of heart regeneration at single-cell precision, identifies Angpt4 as a key regulator of cardiomyocyte proliferation and regeneration, and offers a novel therapeutic target for improved recovery after human heart injuries.
Humans ; Mice ; Rats ; Cell Proliferation ; Heart/physiology* ; Mammals ; Myocardial Infarction/metabolism* ; Myocytes, Cardiac/metabolism* ; Pericardium/metabolism* ; Single-Cell Analysis ; Zebrafish/metabolism*