A Review The diseases caused by endotoxin have seriously affected human health. Previous studies have shown that p38 MAPK pathway is involved in the intracellular signal transduction induced by lipopolysaccharide (LPS), which plays an important role in the activation of inflammation-related cells to release inflammation mediator. Recently there have been some progresses in the isoforms distribution, substrate, molecular mechanism of regulating the release of inflammatory mediators, cellular specific activation and levels of p38 MAPK. [

Objective To study the tumorigenesis mechanism in bone marrow mesenchyme stem cells (MSC). Methods The bone marrow MSC could be induced into turnout (F6 cells) in vitro. The difference between gene expression of F6 cells and MSC was distinguished by fluorescent differential display (FDD). Verification of the result was detected by Real time RT-PCR and Western blotting, and immunocytochemistry. Results FDD analysis confirmed that Nucleostemin (NS) was positively up-regulated in F6 cells compared with MSC. Similar results were obtained by PCR and Western blotting. The NS gene expression levels in MSC, F6, 176-4, F6-6 and F6-7 were significantly different(F =160, P <0.05). The NS gene expression level in F6 (0.0372±0.0019) was 18 folds higher than those of MSC(0.0021±0.0002,P <0.05). Expression levels in F6-4, F6-6 and F6-7 tissue were 0.0504±0.0083, 0.0995±0.0026 and 0.0614±0.0036, and were significantly higher than that in MSC(P <0.05). The expression of NS increased significantly with the accreting volume of turnour, and high-level protein expression of NS was confirmed by Western blotting and immunocytochemistry. Conclusion The expression level of NS might be one of the factors playing important roles during turnour genesis, especially in MSC mutation.

The structure, karyotype and behavior of synaptonemal complex (SC) in the spermatocytes of hedgehog (Erinaceus euroaaus dealbatus (insectivora)) were analyzed by light and electron microscopy with a modified surface spread preparation which involves the use of sodium dodecyl-sulphate (SDS) and silver staining. The lateral elements of the synaptonemal complex have a constant width of about 50 nm, the distance between the two lateral elements is about 100 nm. The relative length and arm rationale constant for each autosomal SC. The relative length and arm ratio constant for ea of the autosomal SCs are very similar to that of mitotic autosome.The X and Y chromosome axes have a clear morphological distinction from the autosomal SC. The axes of X and Y chromosome pair and form a SC of certain length at pachytene stage. The axes of unpaired X and Y chromosome are heteropycnotic and display various morphological complexities. But these differentiations in hedgehog are primary than in other mammalians, such as human and mice. At pachytene stage the X and Y chromosome display an extensive side-by-side pairing segment with decreasing length as meiotic prophase progressed.

AIM: To investigate the effect of epigallocatechin-3-gallate (EGCG) on lipopolysaccharide (LPS)-induced p38 MAPK activation and tumor necrosis factor-? (TNF-?) secretion in macrophages. METHODS: Western blotting was used to detect the phosphorylation of p38 MAPK in mouse macrophages cultured in vitro. Enzyme linked immunosorbent assay was used to determine the secretion of TNF-? in macrophages. Electron microscopy was used to study the effect of EGCG on the structure of LPS. RESULTS: LPS caused activation of p38 MAPK and more production of TNF-?, EGCG inhibited LPS-induced phosphorylation of p38 MAPK and TNF-? production and had no effect on the structure of LPS. CONCLUSIONS: EGCG has no direct effect on LPS, but blocks cellular signal pathway. The inhibition of EGCG on LPS-induced TNF-? production is mediated, at least in part, through blocking of p38 MAPK pathway. [

OBJECTIVETo investigate the possible roles of MT1M gene on the cell cycle and signaling pathway of Hep-G2.

METHODSHep-G2 human hepatoma cells made by transfection with expressible MT1M gene, and the cell cycle was detected by flow cytometry, and the signaling pathway was measured by dual luciferase assay in Hep-G2 cells.

RESULTSMT1M gene was able to induce changes of the cell cycle and the activation of NF-kappaB pathway in Hep-G2 cells.

CONCLUSIONMT1M gene may affect the cell cycle in Hep-G2 and activate the NF-kappaB-dependent transcription.

Cell Line, Tumor ; Flow Cytometry ; G2 Phase ; physiology ; Humans ; Liver Neoplasms ; pathology ; Metallothionein ; genetics ; NF-kappa B ; metabolism ; Plasmids ; genetics ; Signal Transduction ; physiology ; Transfection

OBJECTIVE:To investigate the utilization of aspirin in patients with type 2 diabetes mellitus.METHODS:The utilization of aspirin in 510 inpatients with type 2 diabetes mellitus in the department of Endocrinology in our hospital from April 2004 to April 2007 was analyzed retrospectively.RESULTS:Of the total 510 cases,68.2% received aspirin,with daily dose reached 50～100mg.Aspirin was more often used in patients complicated with coronary heart disease and hypertension(P

Objectives: To establish an effective method to isolate germinal vesicle frommammalian oocyte and make the isolated germinal vesicle undergo meiotic resumptionin vitro. Methods: The germinal vesicles were isolated from oocytes directly througha physical method by drawing oocyte in and out of fine-bore pipette.The isolatedgerminal vesicles were cultured in cell-free system which was prepared from the celllysate of synchronized HeLa cells.DNA fluorescence dye Hoechest 33342 was used tomonitor the condensation of chromatin during germinal vesicle breakdown. Results:The cell lysate of metaphase HeLa cell induced chromatin condensation while the cellextract of early G2 phase could not. Conclusions: The germinal vesicle can beisolated successfully in such a physical method and it can undergo chromatincondensation in vitro just as the oocyte does in vivo. Natl J Androl,2001,7(2):79～83

Objective:To systematically review the characteristics of sleep patterns in the elderly with subjective cognitive decline (SCD) and the relationship between subjective cognitive decline and sleep disorders.Methods:Observational studies on sleep patterns in the elderly with SCD were retrieved by computer in Chinese and English databases such as PubMed, Embase, Web of Science, ScienceDirect, China National Knowledge Infrastructure (CNKI) , WanFang Data and VIP, and the retrieval time was from the establishment of the database to March 31, 2020. Two researchers independently conducted article screening, data extraction and quality evaluation according to the standard. The random-effects model was used for Meta-synthesis of studies with data that could be pooled, and descriptive analysis for studies that could not be pooled.Results:A total of 12 articles were included, with a total sample size of 67 474 cases. The prevalence of SCD in the elderly was 25.9% (95% CI: 6.4%-52.5%) . The sleep patterns of the elderly with SCD were characterized by decreased total sleep time, prolonged wake-time after sleep onset, and frequent awakenings at night. Compared with the normal elderly, the elderly with SCD had a higher risk of poor sleep quality, insomnia and excessive daytime sleepiness ( OR=2.1, 1.15, 2.6) , and excessive daytime sleepiness (ESD) increased the risk of SCD in the elderly ( OR=6.06) . Conclusions:Compared with the normal elderly, the overall sleep quality of the elderly with SCD is poor, and sleep disorders can increase the risk of SCD in the elderly. Existing studies have differences in the diagnostic criteria of SCD, and future studies need to further confirm the causal relationship between SCD and sleep disorders in the elderly.

Objective:To construct and implement an evidence-based practice protocol for the prevention of surgical site infections (SSI) in pediatric patients undergoing orthopedic implant surgery based on the best available evidence, and to evaluate its effectiveness in a clinical setting.Methods:Adhering to the standard procedures of a continuous quality improvement model based on evidence, evidence was transformed into clinical practice through four stages: evidence acquisition, current status review, evidence introduction, and effect evaluation. Totally 301 pediatric patients who underwent orthopedic implant surgery from March to December 2021 at Guangzhou Women and Children's Medical Center, along with 79 medical staff involved in the project implementation were selected by convenience sampling. Patients were divided into three groups according to the time of admission for baseline review (from March to May, n=106), first-round review post-implementation of the evidence-based protocol (from June to August, n=110), and second-round review (from September to December, n=85). Comparisons were made regarding the incidence of SSI in pediatric patients before and after the application of the evidence-based protocol, the knowledge level of medical staff concerning SSI associated with orthopedic implant surgeries in pediatric patients, and the execution of review indicators before and after the application of evidence. Results:Following the implementation of the evidence-based protocol, the incidence of SSI in pediatric patients undergoing orthopedic implant surgery reduced significantly from 8.49% in the baseline review to 0 in the second-round review ( P<0.05). Furthermore, there was a statistically significant increase ( P<0.01) in the scores denoting the knowledge level of medical staff on SSI associated with such surgeries, from (75.91±11.19) to (96.42±7.13). Comparison of the execution of review standards before and after evidence application revealed statistically significant differences ( P<0.05 in all cases) . Conclusions:The initiation of this evidence-based practice project can standardize perioperative diagnostic and nursing behaviors of orthopedic implant surgery in medical and nursing staff, effectively safeguard the safety of pediatric patients, and reduce the occurrence of SSI.

Thyroid-associated ophthalmopathy(TAO)is an autoimmune disease whose etiology and pathogenesis have not yet been clarified.It is generally believed that its occurrence is the result of a combination of immune,genetic,envi-ronmental,and other factors.In recent years,scholars have paid more attention to the influence of microorganisms on TAO,and they found that alterations of the ocular surface and intestinal flora can stimulate the immune system to generate a series of immune responses,which induces autoimmune responses to TAO.The"gut-eye axis"may be an important fac-tor involved in the development of TAO.The intestinal flora and its metabolites may affect ocular tissues through blood cir-culation and the lymphatic system.This interaction between the gut and eye axis may affect the occurrence and develop-ment of TAO through various pathways,including migration of immune cells,cross immune reactions,and metabolite cir-culation.This article reviews the research progress on the correlation between alterations of the ocular surface and intesti-nal flora and TAO and explores the possible mechanisms of the flora involvement in the development of TAO,providing new ideas for the diagnosis and treatment of TAO.