Objective: To investigate the protective effects of morusin on lipopolysaccharide (LPS)-induced acute liver injury in mice and its underlying mechanisms. Methods: Thirty-two male specific pathogen-free (SPF) C57BL/6J mice were randomly divided into four groups (n = 8 per group): control, LPS, low-dose morusin (morusin-L, 10 mg/kg), and high-dose morusin (morusin-H, 20 mg/kg) groups. The mice in each group were administered the corresponding drugs or normal saline via continuous gavage daily for 16 consecutive days. Except for control group, which received an equal volume of normal saline, other groups were intraperitoneally injected with LPS (5 mg/kg) 2 h after the last gavage to establish the acute liver injury model. Serum and liver tissues were collected for subsequent analysis 6 h after LPS injection. The activities of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) in serum were detected with biochemical methods. The levels of tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-1β in serum were measured by enzyme-linked immunosorbent assay (ELISA). Hepatic pathological changes were evaluated by hematoxylin-eosin (HE) staining. The 16S ribosomal RNA (16S rRNA) sequencing was performed to assess the composition of intestinal flora, linear discriminant analysis effect size (LEfSe) was applied for multi-level species discrimination, and Spearman’s correlation analysis was performed. The liver tissues of mice with acute liver injury were analyzed by RNA sequencing (RNA-seq) technology to identify differentially expressed genes (DEGs), and then enrichment analysis of the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway was conducted. The expression levels of selected genes was validated by quantitative reverse transcription polymerase chain reaction (qRT-PCR), while immunohistochemistry (IHC) was performed to examine the expression levels of IL-6, myeloid differentiation primary response 88 (MYD88), and toll-like receptor 2 (TLR2). Results: Morusin significantly reduced the serum levels of ALT, AST, and inflammatory factors (TNF-α, IL-6, and IL-1β) (P < 0.05, P < 0.01, or P < 0.001), while alleviating the hepatic pathological damage in mice. Based on efficacy comparisons, morusin-H group was selected for subsequent microbiome and transcriptome analyses. Microbiome analysis revealed that morusin-H effectively mitigated LPS-induced gut dysbiosis and restored the Firmicutes/Bacteroidota balance (P < 0.01). At the genus level, morusin-H significantly reduced the abundances of norank_f_Muribaculaceae, Desulfovibrio, Parabacteroides, and Muribaculum (P < 0.05, P < 0.01, or P < 0.001). At the phylum, family, and genus levels, our findings indicated that morusin-H treatment caused a significant decrease in the abundance of Desulfobacterota, Desulfovibrionaceae, and Desulfovibrio (P < 0.01). Importantly, the abundance of Desulfovibrio was positively correlated with the levels of ALT, AST, TNF-α, IL-1β, and IL-6. Transcriptomic and molecular analyses showed that the therapeutic mechanism of morusin-H involved suppression of the IL-17/TNF signaling pathways and downregulating the mRNA levels of Tlr2, Tlr3, Myd88, Il6, and Cxcl10 (P < 0.05 or P < 0.001), as well as the protein levels of key inflammatory mediators (IL-6, MYD88, and TLR2) (P < 0.001). Conclusion Morusin demonstrates protective effects against LPS-induced acute liver injury, likely through modulation of gut microbiota and suppression of pro-inflammatory factor expression. These findings indicate that morusin exerts its effects through the "microbiota-inflammation-liver" axis, providing a theoretical basis for its use as a multi-target plant-based drug in the treatment of metabolic inflammation-related liver diseases.

Objective:To explore the impact of a comprehensive intervention program that integrates transitional care with personalized discharge preparation services on discharge preparedness on the growth, development, and motor development in premature infants, providing guidance and reference for clinical practice.Methods:The 90 pairs of premature infants and their main caregivers who were treated in the neonatal department, Children ′s Hospital, Quanzhou Maternal and Child Health Hospital were studied from February 2023 to February 2024 by randomized control method. Used the table of random numbers, they were divided into the control group and the observation group, with 45 pairs in each group. The control group routinely administered care, while the observation group was implemented a transitional care combined with personalized discharge preparation services. The discharge preparedness, growth and motor development, and the disease uncertainty of caregivers were observed between the 2 groups. Results:There were 27 males and 18 females of the 45 preterm infants,with gestational age of 30.86 (29.36, 31.50) weeks in the control group, 24 males and 21 females with gestational age of 30.29(29.00, 31.07) weeks in the observation group. The main caregiver identities 43 were mothers and 2 were other identities in the control group, 42 were mothers and 3 were other identities in the observation group, with them being 31.00(28.00, 35.00) years old. There were 97.78% (44 /45) caregivers who thought the child was ready to go home in the observation group, while the control group were 84.44% (38 /45), these differences were statistically significant ( χ2=4.88, P<0.05). The total score of discharge readiness in the observation group were 240.00(237.00, 242.50) points, higher than in the control group 226.00(219.00, 229.50) points, these differences were statistically significant ( Z=-6.23, P<0.05). The head circumference and body weight of the observation group were (34.82 ± 1.14) cm and (3.60 ± 0.55) kg, while the control group were (34.25 ± 1.22) cm and (3.35 ± 0.53) kg, there were statistically significant between the two groups ( t=-2.29, -2.22, all P<0.05). The Test of Infant Motor Performance score in the observation group was 50.00(46.00, 52.00) points, while the control group was 45.00(42.00, 48.00) points, there were statistically significant between the two groups ( Z=-3.65, P<0.05). The total score of disease uncertainty in the observation was 52.00(45.50, 60.00) points, while the control group was 61.00(58.50, 65.00) points, there was statistically significant between the two groups ( Z=-4.62, P<0.05). Conclusions:The discharge preparedness of the caregivers of preterm infants was improved because of the use of transitional care combined with personalized discharge preparation services, and the growth and motor development of preterm infants were promoted, and the uncertainty of the family caregivers of preterm infants about the disease was reduced.

Objective:To explore the impact of a comprehensive intervention program that integrates transitional care with personalized discharge preparation services on discharge preparedness on the growth, development, and motor development in premature infants, providing guidance and reference for clinical practice.Methods:The 90 pairs of premature infants and their main caregivers who were treated in the neonatal department, Children ′s Hospital, Quanzhou Maternal and Child Health Hospital were studied from February 2023 to February 2024 by randomized control method. Used the table of random numbers, they were divided into the control group and the observation group, with 45 pairs in each group. The control group routinely administered care, while the observation group was implemented a transitional care combined with personalized discharge preparation services. The discharge preparedness, growth and motor development, and the disease uncertainty of caregivers were observed between the 2 groups. Results:There were 27 males and 18 females of the 45 preterm infants,with gestational age of 30.86 (29.36, 31.50) weeks in the control group, 24 males and 21 females with gestational age of 30.29(29.00, 31.07) weeks in the observation group. The main caregiver identities 43 were mothers and 2 were other identities in the control group, 42 were mothers and 3 were other identities in the observation group, with them being 31.00(28.00, 35.00) years old. There were 97.78% (44 /45) caregivers who thought the child was ready to go home in the observation group, while the control group were 84.44% (38 /45), these differences were statistically significant ( χ2=4.88, P<0.05). The total score of discharge readiness in the observation group were 240.00(237.00, 242.50) points, higher than in the control group 226.00(219.00, 229.50) points, these differences were statistically significant ( Z=-6.23, P<0.05). The head circumference and body weight of the observation group were (34.82 ± 1.14) cm and (3.60 ± 0.55) kg, while the control group were (34.25 ± 1.22) cm and (3.35 ± 0.53) kg, there were statistically significant between the two groups ( t=-2.29, -2.22, all P<0.05). The Test of Infant Motor Performance score in the observation group was 50.00(46.00, 52.00) points, while the control group was 45.00(42.00, 48.00) points, there were statistically significant between the two groups ( Z=-3.65, P<0.05). The total score of disease uncertainty in the observation was 52.00(45.50, 60.00) points, while the control group was 61.00(58.50, 65.00) points, there was statistically significant between the two groups ( Z=-4.62, P<0.05). Conclusions:The discharge preparedness of the caregivers of preterm infants was improved because of the use of transitional care combined with personalized discharge preparation services, and the growth and motor development of preterm infants were promoted, and the uncertainty of the family caregivers of preterm infants about the disease was reduced.

ObjectiveTo understand the use of antibiotics in inpatients and the incidence and trend of hospital infections， to explore the implementation effect of comprehensive management measures， and to provide reference for hospitals to use antibiotics reasonably. MethodsBased on the hospital infection monitoring and management system， a retrospective analysis and comparison were conducted on the use of antibiotics， submission of microbial test samples， and incidence of hospital infections among inpatients in a tertiary hospital from 2012 to 2021. ResultsFrom 2012 to 2021， the use of antibiotics showed a downward trend， from 50.82% in 2012 to 41.29% in 2021. At the same time， the use rate of restricted and special antibiotics had also decreased， and the use rate of restricted and special antibiotics in patients without hospital infection was significantly lower than that in patients with hospital infection， and the microbial testing rate was also on the rise. The annual incidence rate of hospital infection was 0.69%‒1.92%， and the annual case-time prevalence rate was 0.79%‒2.17%. The annual average rate of the above two in 10 years was 1.18% and 1.34%， respectively. The results of the exponential smoothing model also showed that the utilization rate of antibiotics was decreasing and the incidence of nosocomial infection was stable. ConclusionLarge general hospitals took comprehensive management measures to strengthen the management of rational use of antibiotics， which led to a decline in the use rate of antibacterial drugs for inpatients and an increase in the rate of microbial examination. At the same time， the overall incidence of hospital infection was relatively stable， suggesting that the comprehensive management measures of antibacterial drugs in hospitals had achieved certain results. The current measures need to be optimized in the future to continuously improve the management level of rational use of antibacterial drugs.

Lynch syndrome (LS) is a common hereditary tumor syndrome. Gynecological malignancy is usually the first tumor of LS in women, and endometrial cancer (EC) is the most closely associated with LS. Most patients with LS are unaware of this risk, and it is possible to cause misdiagnosis. Thus, early diagnosis helps patients to start tumor surveillance timely, as well as a cascade of family surveillance. This paper reviews the progress of LS associated with EC.

BACKGROUND: Corneal disease is second only to cataract considered as the leading cause of blindness in the world, with high morbidity. Construction of corneal substitutes In Vitro by tissue engineering technology to achieve corneal regeneration has become a research hotspot in recent years. We conducted in-depth research on the biocompatibility, physicochemical and mechanical properties of rat bone marrow mesenchymal stem cells (rBM-MSCs)-seeded gelatin methacrylate (GelMA) as a bioengineered cornea. METHODS: Four kinds of GelMA with different concentrations (7, 10, 15 and 30%) were prepared, and their physicchemical, optical properties, and biocompatibility with rBM-MSCs were characterized. MTT, live/dead staining, cell morphology, immunofluorescence staining and gene expression of keratocyte markers were performed. RESULTS: 7%GelMA hydrogel had higher equilibrium water content and porosity, better optical properties and hydrophilicity. In addition, it is more beneficial to the growth and proliferation of rBM-MSCs. However, the 30%GelMA hydrogel had the best mechanical properties, and could be more conducive to promote the differentiation of rBM-MSCs into keratocyte-like cells. CONCLUSION As a natural biological scaffold, GelMA hydrogel has good biocompatibility. And it has the ability to promote the differentiation of rBM-MSCs into keratocyte-like cells, which laid a theoretical and experimental foundation for further tissue-engineered corneal stromal transplantation, and provided a new idea for the source of seeded cells in corneal tissue engineering.

Carbon nanotube (CNT) composite materials are very attractive for use in neural tissue engineering and biosensor coatings. CNT scaffolds are excellent mimics of extracellular matrix due to their hydrophilicity, viscosity, and biocompatibility. CNTs can also impart conductivity to other insulating materials, improve mechanical stability, guide neuronal cell behavior, and trigger axon regeneration. The performance of chitosan (CS)/polyethylene glycol (PEG) composite scaffolds could be optimized by introducing multi-walled CNTs (MWCNTs). CS/PEG/CNT composite scaffolds with CNT content of 1%, 3%, and 5% (1%=0.01 g/mL) were prepared by freeze-drying. Their physical and chemical properties and biocompatibility were evaluated. Scanning electron microscopy (SEM) showed that the composite scaffolds had a highly connected porous structure. Transmission electron microscope (TEM) and Raman spectroscopy proved that the CNTs were well dispersed in the CS/PEG matrix and combined with the CS/PEG nanofiber bundles. MWCNTs enhanced the elastic modulus of the scaffold. The porosity of the scaffolds ranged from 83% to 96%. They reached a stable water swelling state within 24 h, and swelling decreased with increasing MWCNT concentration. The electrical conductivity and cell adhesion rate of the scaffolds increased with increasing MWCNT content. Immunofluorescence showed that rat pheochromocytoma (PC12) cells grown in the scaffolds had characteristics similar to nerve cells. We measured changes in the expression of nerve cell markers by quantitative real-time polymerase chain reaction (qRT-PCR), and found that PC12 cells cultured in the scaffolds expressed growth-associated protein 43 (GAP43), nerve growth factor receptor (NGFR), and class III β‍-tubulin (TUBB3) proteins. Preliminary research showed that the prepared CS/PEG/CNT scaffold has good biocompatibility and can be further applied to neural tissue engineering research.
Animals ; Axons ; Biocompatible Materials/chemistry* ; Chitosan/chemistry* ; Nanotubes, Carbon/chemistry* ; Nerve Regeneration ; Polyethylene Glycols ; Porosity ; Rats ; Tissue Engineering/methods* ; Tissue Scaffolds/chemistry*

【Objective】 To investigate the relationship between hepatitis B virus X （HBx） protein and EGFR promoter， and the role of HBx protein in activating EGFR/PI3K/p-Akt signaling pathway and inhibiting apoptosis. 【Methods】 EGFR promoter plasmids were constructed and the relationship between HBx and EGFR promoters was characterized using a luciferase reporter assay. EGFR-overexpressing trophoblast cells were constructed， and EGFR expression in the overexpressing cells was knocked down using EGFR shRNA. The expression and localization of EGFR/PI3K/p-Akt were detected by Western blotting and confocal laser microscopy. Cell apoptosis was analyzed using flow cytometry. HBV plasmids carrying either full-length HBx or HBx with a deletion mutation （ΔHBx） and HBx plasmids were transfected into two types of trophoblast cells； HBx and PI3K/p-Akt protein expressions were detected by Western blotting. Cell apoptosis was analyzed using flow cytometry. 【Results】 Co-transfection of HBx and EGFR promoter plasmids in JEG-3 and HTR-8/Svneo cells significantly elevated the expression of EGFR promoter driven luciferase compared with the control group （P<0.01）. In EGFR-overexpressing cells， the expression of PI3K/p-Akt was significantly increased （P<0.01）， whereas the apoptosis rate was significantly decreased for JEG-3 cells and HTR-8/Svneo cells （both P<0.01）. These results were reversed in the EGFR-knock down group. When the intracellular HBx protein was expressed in JEG-3 and HTR-8 cells， PI3K/p-Akt protein expression was significantly increased （both P<0.05）， and the proportion of apoptosis was significantly decreased （both P<0.05）. 【Conclusion】 In placental trophoblast cells， HBx protein activates the expression of EGFR by acting on the EGFR promoter， and inhibits the apoptosis of trophoblast cells via the downstream EGFR/PI3K/p-Akt signaling pathway.

Parkinson′s disease (PD) is a common neurodegenerative disease. Its main pathological feature is the progressive loss of substantia nigra and other catecholaminergic neurons containing neuromelanin (NM). Therefore, NM may be closely related to the pathogenesis of PD. The content of NM can be detected by NM magnetic sensitive sequence imaging, and then it can be applied to the study of the neuropathological mechanism of NM and PD. This paper focuses on the physiological significance of NM, its role in the pathogenesis of PD and the prospect of NM as a biomarker to assist diagnosis and disease monitoring of PD.

Objective: To investigate the positive rate for 2019-nCoV tests and co-infections in Wuhan district. Methods: A total of 8 274 cases in Wuhan were enrolled in this cross-sectional study during January 20 to February 9, 2020, and were tested for 2019-nCoV using fluorescence quantitative PCR. Both respiratory tract samples (nasopharynx, oropharynx, sputum and alveolar lavage fluid) and non-respiratory tract samples (urine, feces, anal swabs, blood and conjunctival sac swabs) were collected. If both orf1ab and N genes are positive, they are classified as nucleic acid test positive group; if both orf1ab and N genes are negative, they are classified as negative group; if single gene target is positive, they are classified as suspicious group. Individuals were divided into male group and female group according to sex. At the same time, 316 patients were tested for 13 respiratory pathogens by multiplex PCR. Results: Among the 8 274 subjects, 2 745 (33.2%) were 2019-nCoV infected; 5 277 (63.8%) subjects showed negative results in the 2019-nCoV nucleic acid test; and 252 cases (3.05%) was not definitive (inconclusive result). The age of cases with COVID-19 patients and inconclusive cases was significantly higher than that of cases without 2019-nCoV infection (40 vs 56, t=27.569, P<0.001; 52 vs 56, t=6.774, P<0.001). The positive rate of 13 respiratory pathogens multiple tests was significantly lower in 104 subjects who were positive for 2019-nCoV compared with those in subjects who were negative for 2019-nCoV test (5.77% vs 18.39%, χ²=24.105, P=0.003). Four types of respiratory tract samples and five types of non-respiratory tract samples were found to be positive for 2019-nCoV nucleic acid test. Conclusion The 2019-nCoV nucleic acid positive rate in male is higher than in female. Co-infections should be pay close attention in COVID-19 patients. 2019-nCoV nucleic acid can be detected in non-respiratory tract samples.