BACKGROUND: When the liver affected severe damage or excalation, liver stem cells rapidly proliferated and differentiated into mature liver cells to repair liver tissue. However, liver regeneration is a complicated multiple signal molecular regulatory process and related genes and proteins that participated in regulation remain unclear. OBJECTIVE: To investigate the expressions of CD34 and Delta-like-1 protein in rat liver regenerated tissues after partial hepatectomy. METHODS: Rat hepatic regeneration models were established after hepatectomy. Expressions of ATPase, proliferating cell nuclear antigen (PCNA), CD34 and Delta-like-1 protein were detected by hematoxylin-eosin staining, enzyme-histochemistry and immunohistochemistry method at various time points. RESULTS AND CONCLUSION: At the early stage of liver regeneration, the expression of ATPase was down-regulated, and the expressions of CD34 and Delta-like-1 protein were up-regulated. At the middle stage, the expression of ATPase was increased to the normal level, and the expressions of CD34 and Delta-like-1 protein were down-regulated. The expression of PCNA protein was continuously up-regulated. These suggest that the expressions of ATPase, CD34 and Delta-like-1 protein were different at different stages of hepatic regeneration, which means that different signal molecules were cooperated during the hepatic regeneration, and Notch-Delta signal pathway takes part in the pathogenesy.

OBJECTIVEThis study aims to synthesize MTO1 (a kind of oligodeoxynucleotides) and N-isopropylacrylamide-modified polyethylenimines (PEN) complexes (MT01/PEN) as well as to investigate the effect of the complexes on the expression of osteoprotegerin (OPG) and the receptor activator of nuclear factor κB ligand (RANKL) in the human osteoblast-like cell line MG63.

METHODSMG63 cells were transfected by MT01/PEN complexes formed with three different mass ratios (1:2, 1:4, 1:6) of MT01 to PEN. MT01 and MT01-s were used as positive control. Enzyme-linked immunosorbent assay and real-time polymerase chain reaction were performed to estimate the amount of OPG and RANKL released into the culture media and in MG63 at 24, 48, 72 h.

RESULTSMG63 responded to the MT01/PEN complexes by significantly upregulating the OPG on the protein and mRNA levels (P < 0.05). The protein and mRNA levels of RANKL were lower in most of the groups with complexes, and the OPG/RANKL ratio were higher (P < 0.05). MG63 were affected by the MT01/PEN complexes with different mass ratios, particularly when the ratio was 1:6.

CONCLUSIONMT01 can enhance the promotion of ossification by establishing the delivery system with PEN.

Acrylamides ; Cell Line ; Enzyme-Linked Immunosorbent Assay ; Humans ; Oligodeoxyribonucleotides ; Osteoblasts ; Osteoprotegerin ; Polyethyleneimine ; RANK Ligand ; RNA, Messenger ; Real-Time Polymerase Chain Reaction

Objective To discuss the present situation and existing problems of the funded projects, especially in the gap between western region and eastern central region by analyzing the funding situation of the projects funded by the National Natural Science Foundation of China (NSFC) and the completed projects in the TCM field from 1989 to 2015. Methods The website was searched thoroughly, and data of Division Ⅹ of Health Science Department of National Natural Science Foundation of China from 1989 to 2015 (ie TCM, Chinese materia medica and integrated traditional Chinese and Western medicine) funded by the National Science Foundation for Young Scientists in China were obtained, and the projects of the National Science Foundation for Young Scientists funded by Division Ⅹ of Health Science Department of National Natural Science Foundation of China from 1989 to 2015 were included, and incomplete or inavailable items were eliminated. Relevant information according to the extracted forms was extracted. The situation of different regions and the situations of the projects have been concluded and the titles of different titles have been analyzed. Results By 2015, the number of funded projects and the amount of financing in the TCM field were increasing year by year. In the western regions, the number of funded projects and the amount of financing accounted for only 11.29% of the total number and 11.28% of the total financing. Compared with the less supporting western regions, much more were mainly in eastern and central regions. The number of SCI papers published and single cited times of the finished projects were 988 and 20.85. Compared with the developed areas in eastern and central regions, there was no statistical significance in the average number of SCI papers (P=0.493), average SCI papers cited article number (P=0.449), SCI papers in average cited frequency (P=0.589), the average CSCD papers number (P=0.579), average CSCD papers cited article number (P=0.883) and average single CSCD papers cited frequency (P=0.753) in western regions (P>0.05). Conclusion Under the stable supports of the Young Scientists Fund, scientific researches in the TCM field have achieved remarkable achievements. In addition, the ability of scientific research and innovation of the young scientific workers have been improved. The funded projects in western regions are far less than those in eastern and central regions, with great differences. However, there is no statistical significance in the research results of the items in western regions and eastern and central regions.

In recent years, extensive studies have been conducted on the pathogenesis of nonalcoholic fatty liver disease (NAFLD), and the action of mechanism of traditional Chinese medicine (TCM) in NAFLD has become a new research topic. TCM has achieved good clinical efficacy in the treatment of NAFLD, with the advantages of specific, flexible, multilevel, and multi-target treatment. This article introduces the role of TCM in improving insulin, regulating lipid metabolism, preventing lipid peroxidation, regulating cytokines, regulating and maintaining the dynamic balance of factors involved in lipid metabolism, and maintaining the balance of intestinal microflora, and analyzes the major problems in TCM research.

Objective:To construct a Question Prompt List of information needs for patients with interstitial lung disease, providing a tool for patients with interstitial lung disease to actively obtain disease-related information.Methods:A literature study was conducted based on the three core needs (ERG) theory framework of existence,relatedness and growth. A purposive sampling method was used to select 15 patients with interstitial lung disease from Drum Tower Hospital, Medical School of Nanjing University from December 2021 to January 2022 for descriptive research. Based on literature research and qualitative research, the initial items of the Question Prompt List were determined through expert inquiry, and the items were extracted, discussed, and adjusted, and finalized the list of information needs and prompts for patients with interstitial lung disease.Results:The 19 experts participated in the consultation, with a positive coefficient of 100.0% and 94.7% for two rounds of consultation, an authoritative coefficient of 0.91 and 0.92, and the Kendall coordination coefficient of 0.31 and 0.23, respectively. Finally, a list of interstitial lung disease patients′ question prompts containing 4 primary indicators and 34 secondary indicators was formed.Conclusions:Based on the ERG theory, the research method for the Question Prompt List of information needs for patients with interstitial lung disease is scientific and reliable, and can be used in clinical practice to help patients inquire and obtain the necessary information.

Objective To investigate the levels and significance of Th17 cells and regulatory T cells (Treg) in peripheral blood of children with allergic rhinitis during pollen and non-pollen seasons.Methods Thirteen children with hay fever, 10 children with house dust mite(HDM)-allergic asthma and 10 healthy children were recruited into this study.Percentages of Th17 and Treg cells were detected by flow cytometry.Levels of IL-17, IL-10 and TGF-β in cell culture supernatants were measured by ELISA.Results (1) The percentages of Th17 cells in children with allergic rhinitis [(3.4±2.4)%] were significantly higher than those in HDM-allergic asthmatics [(2.1±1.6)%] and those in healthy children [(0.5±0.3)%] during pollen season (both P<0.05).The levels of Treg cells in allergic rhinitis group [(2.1±1.3)%] and in HDM-allergic asthma group [(3.6±1.9)%] were significantly lower than those in healthy control group [(5.5±2.8)%] (both P<0.05).The levels of Th17 cells [(3.0±1.9)% vs (3.4±2.4)%, P<0.05] and ratios of Th17/Treg cells [(1.4±1.0)% vs (1.7±1.5)%, P<0.05] in children with allergic rhinitis were significantly decreased during non-pollen season as compared with those during pollen season, but the levels of Treg cells were up-regulated [(2.4±1.6)% vs (2.1±1.3)%, P<0.05].(2) Correlation analysis revealed that the ratios of Th17/Treg cells were positively correlated with the concentrations of FeNO (fractional concentration of exhaled NO) (r=0.321, P<0.05) and the counts of circulating eosinophils (r=0.198, P<0.05) in children with allergic rhinitis during pollen season.Conclusion The imbalanced Th17 and Treg cells in children with allergic rhinitis during pollen season might play a vital role in the regulation of allergic airway inflammation.

Objective To assess the influence of case management based on 5E mode on water-salt control in the patients with peritoneal dialysis.Methods One hundred eligible cases of peritoneal dialysis were randomly divided into two groups,50 cases in each group.The control group received regular nursing care,while on this basis the experimental group applied the case management based on 5E mode for conducting the nursing intervention.The various indicators were evaluated at 3 time points (the first stage of the baseline data ceollection),second stage (4-month intervention) and third stage (3-month follow up).Results There was no statistically significant difference in the first stage between the two groups;in the second and third stage the body weight,systolic blood pressure,diastolic blood pressure,water and salt intake amount in the experimental group were lower than those in the control group,compliance was superior to thas of the control group(P＜0.05);the descent speed of urine volume and PD ultrafiltration amount in the experimental group was slowed down compared with the control group(P＜0.05);the patient's daily sleeping time was improved(P＜0.05).Conclusion The case management based on 5E mode used in the water-sak control of the patients with peritoneal dialysis is effective and feasible.

BACKGROUND:Lumbar fixed-point rotation operation needs collaborative operation of the doctor's hands,and outputs rotation and thumb thrust.Lumbar disc herniation can be treated through disc displacement and adjusting stress distribution.However,the mechanical effects of thumb thrust and the biomechanical effects of loading direction on manipulative effects remain unclear. OBJECTIVE:To compare the biomechanical difference of lumbar fixed-point rotation manipulation for treating lumbar disc herniation under different thrust directions. METHODS:The L3-5 normal three-dimensional finite element model was constructed and validity was verified.According to the intervertebral disc degeneration Pfirrmann grade,intervertebral disc degeneration was simulated by modifying the L4/5 intervertebral space height,the volume of the nucleus pulposus,as well as the material parameters of the annulus fibrosus,nucleus pulposus,and ligament.Finally,the pathological model of L4/5 moderate disc degeneration with left para-central herniation was constructed,and then the pathological models were used as research objects.Simulation technique:spinning to the right;taking the condition on changing the direction of the thumb thrust to establish three modes of operation(M1:thumb push to the left;M2:thumb push to the right;M3:no thrust push).The protrusion displacement and the disc stress,and the stress and strain of the facet joint cartilage were compared in the three operating modes. RESULTS AND CONCLUSION:(1)Maximum displacement value of L4/5 disc herniation:displacement was 2.672 3 mm for M1,1.156 1 mm for M2,1.826 4 mm for M3,M1＞M3＞M2.(2)The maximum Von Mises stress of L4/5 discs was 1.846 7 MPa for M1,0.419 0 MPa for M2,and 1.257 9 MPa for M3,M1＞M3＞M2.(3)L4/5 bilateral small cartilage produced different degrees of contact stress changes:It was 0.485 5 MPa for M1,0.026 7 MPa for M2,and 0.441 4 MPa for M3,M1＞M3＞M2.Right cartilage contact force was 0.000 5 MPa for M1,0.025 9 MPa for M2,and 0.001 3 MPa for M3,M2＞M3＞M1;the left greater than the right,M1 had the highest value;cartilage strain was consistent with contact stress changes.(4)Different operation modes will have some biomechanical influences on the diseased intervertebral disc and accessory structure.The M1 operation mode can maximize the displacement of protrusion,disc stress and left joint cartilage contact,which can better promote disc displacement,balance stress distribution and reduce facet joint disorder,so the operation is better.

OBJECTIVETo effectively screen p16 protein expression of different clinical stage nasopharyngeal carcinoma (NPC) by constructing and applying high-throughput tissue microarray/tissue chip.

METHODSA series of tissue chips were prepared by using tissue arrayer with samples from different clinical stage NPC tumors and noncancerous nasopharynx tissue. Specimens from 259 cases of nasopharyngeal lesions were detected immunohistochemically on a tissue chip for p16 protein expression and the correlation of p16 protein expression to clinical stage of NPC was analyzed statistically.

RESULTSp16 protein expression was detected in all 18 histologically normal nasopharyngeal epithelia. No p16 protein was detected in 3 of 3 (100%) stage I NPC, 38 of 44 (86.3%) stage II NPC, 59 of 68 (86.8%) stage III NPC, 23 of 28 (82.1%) stage IV NPC, 87 of 98 (88.8%) unclear stage NPC. The efficiency of p16 protein expression in NPC tissues was significantly lower than that in normal nasopharyngeal epithelia (chi(2) = 82.58, P < 0.001), and there was no apparent relationship between p16 protein expression and clinical stages (chi(2) = 0.09, P = 0.769).

CONCLUSIONSThe frequent deletion of p16 protein in NPC suggests that p16 gene has an important role in the development and progression of NPC. The consistency of p16 protein deletion in different stages of NPC suggests that the deletion of p16 protein is an early event in the development of NPC, and it is feasible to utilize tissue microarray for a rapid, economic and accurate screening of clinical tissue specimens on a large scale.

Cyclin-Dependent Kinase Inhibitor p16 ; biosynthesis ; Humans ; Immunohistochemistry ; Nasopharyngeal Neoplasms ; metabolism ; pathology ; Neoplasm Staging

OBJECTIVETo investigate the loss of heterozygosity (LOH) on chromosomal arms 13q and 14q in nasopharyngeal carcinoma (NPC) using 21 microsatellite polymorphic markers and to study whether there is a correlation between LOH and clinicopathologic parameters and/or Epstein-Barr virus (EBV) infection in NPC.

METHODSSixty cases of NPC were studied using polymerase chain reaction based microsatellite analysis with genescan and genotyping techniques.

RESULTSLOH was detected on 13q in 78% of NPC tumors, high frequency LOH loci (more than 30%) clustered to 13q12.3-q14.3 and 13q32. On chromosome 14q, LOH was detected in 80% of NPC tumors; high frequency LOH loci clustered to 14q11-q13, 14q21-q24 and 14q32. High frequency LOH at 13q31-q32 correlated with a lower level of EBV infection; LOH on chromosome 14q was closely associated with poor differentiation of NPC tumor cells.

CONCLUSIONOur results suggest that in NPC, LOH on chromosome 13q and 14q are common genetic events, and putative tumor suppressor genes (TSG) residing in these regions may be involved in tumorigenesis.

Adult ; Aged ; Chromosomes, Human, Pair 13 ; genetics ; Chromosomes, Human, Pair 14 ; genetics ; DNA, Neoplasm ; genetics ; Female ; Gene Frequency ; Humans ; Loss of Heterozygosity ; Male ; Microsatellite Repeats ; Middle Aged ; Nasopharyngeal Neoplasms ; genetics ; pathology ; Statistics as Topic