Objective: To investigate the expression of Cyclin G mRNA in leukemia patients and its clinical significance. Methods: RT-PCR was used to analyze the expression of Cyclin G mRNA in the mononuclear cells of 129 leukemia patients and 10 healthy controls. Results: (1) The expression of Cyclin G in acute leukemia (AL) and chronic leukemia (CL) patients was significantly higher than that in healthy controls (both P 50?109/L in AL and AML groups were significantly higher than those with WBC ≤ 50?109/L. (4) Fifty-three of the newly diagnosed cases were Cyclin G positive. The remission rate of patients with high Cyclin G expression(51.7%)was significantly lower than that with low Cyclin G expression(79.1%)(P

Objective:To investigate the effect of SU11248 proliferation and apoptosis of multiple myeloma cell line U266 in vitro and analyze its mechanisms.Methods:Effect of SU11248 on proliferation of U266 cells was detected by MTT assay.The ability of SU11248 to induce apoptosis of U266 cells was examined by cell cycle analysis,TUNEL and DNA fragmentation.Expression of c-myc,hTERT,Bcl-2 and Bax mRNA in U266 cells was assessed by RT-PCR analysis.Results:The proliferation of U266 cells was inhibited by SU11248 in dose-and time-dependent manners (P

Aim To observe the adhesive process of the human gastric cancer cell line MKN1,and study the expression of integrin ?1;to investigate the mechanism of the inhibition of the adhesion process of MKN1 cells by destran sulfate(DS).Methods The MKN1 cells were cultured with DS or PBS,then stained with immunofluorescent cytochemistry and observed in fixed or living conditions with confocal laser scanning microscope.RT-PCR was used to analyze the cDNA expression of MKN1 cells.Results MKN1 cells adhered to culture dishes by the process of forming filopodia,changed into a flat shape,and then adhered to other cells to form a cell-monolayer.Integrin ?1 was intensively expressed in the cell membrane,where integrin ?1 formed clusters.DS inhibted the expression of integrin ?1 in cell membrane,and decreased the area of integrin ?1 clusters.DS-treated cells also tended to maintain a round shape by contracting the filopodia.In DS-containing culture dishes,some cells kept floating 4 hours after seeding.DS decreased the level of the cDNA expression of the adhered cells to 74% and of the floating cells to 38% of that of the cells in un-treated group,respectively.Conclusion The inhibition of the adhesion of MKN1 cells by DS was related to the suppression of the expression of integrin ?1.

OBJECTIVETo establish a real-time quantitative RT-PCR method for the detection of expression of bcl-2 mRNA.

METHODSThe vector containing bcl-2 gene as standard template was constructed with T-A cloning technique. The fluorogenic probe (i.e.,Taq man probe) was used to establish a real-time RT-PCR. bcl-2 mRNA expression level in Burkitt's lymphoma pre-and post-treated with bcl-2 antisense phosphothioate oligodeoxynucleotides (AS-PS-ODN) was determined with real-time quantitative RT-PCR, also with semi-quantitative RT-PCR.

RESULTSThe expression of bcl-2 mRNA in Burkitt's lymphoma treated with bcl-2 AS- PS-ODN decreased significantly and no changes of bcl-2-mRNA expression in group treated with nonsense ODN were noticed. The semi-quantitative RT-PCR results also demonstrated that bcl-2 level varied as detected with real-time fluorogenic quantitative RT-PCR, but less sensitive and accurate.

CONCLUSIONDetection of bcl-2 mRNA expression with the fluorogenic real-time quantitative RT-PCR is more accurate and sensitive than semi-quantitive RT-PCR.

Objective: To investigate the distribution and resistance of pathogens isolated from blood cultures in patients with hematological malignancies after chemotherapy in Union Hospital of Fujian Medical University so as to understand the real situation of blood stream infection (BSI) and provide the basis for rational use of antibiotics in clinic. Methods: The data of 657 strains isolated from blood culture specimens of patients with hematological malignancies from January 2013 to December 2016 were collected analyzed. Results: A total of 657 cases of blood culture positive bacterial strains were included in the study, involving 410 cases (62.4%) with single Gram-negative bacteria (G^- bacteria) , 163 cases (24.8%) with single Gram-positive bacteria (G⁺ bacteria) , 50 cases (7.6%) with single fungi. The most common 5 isolates in blood culture were Klebsiella pneumoniae (17.5%) , Escherichia coli (17.2%) , Coagulase negative staphylococci (CNS) (14.9%) , Pseudomonas aeruginosa (14.2%) and Staphylococcus aureus (3.5%) . The extended-spectrum beta-lactamase (ESBL) production rates of Klebsiella pneumoniae and Escherichia coli were 25.2% and 55.8%, respectively. ESBL producing strains were almost more resistant than non-ESBL producing strains. The resistance rates of Enterobacteriaceae to carbapenems, piperacillin/tazobactam and tigecycline were lower than 14.0%. The resistance rates of Pseudomonas aeruginosa to a variety of drugs were lower than 12.0%. Tigecycline-resistant Acinetobacter baumannii bacteria were not detected, and the resistance rates of Acinetobacter baumannii to cefixime and cefotaxime were 7.1%. Methicillin-resistant strains in CNS (MRCNS) and in Staphylococcus aureus (MRSA) accounted for 84.7% and 43.5%, respectively. Vancomycin, linezolid and tigecycline-resistant G⁺ bacteria were not detected. Conclusion The pathogens isolated from blood culture were widely distributed. Most of them were G^- bacteria, and the resistance to antibiotics was quite common. Furhermore, vancomycin, linezolid and tigecycline can be chosen empirically to treat patiens who ar suspected to have G⁺ bacterial BSI.

Wound repair is a fundamental task that the whole field of the Burn and Plastic surgery pays urgent attention to and longs for a breakthrough. In this column, wound repair balance laws theory is expounded and we are expecting people in the field gradually began to value the use of balance law. Guided by the law of balance principle, people are required to conduct scientific research, improve clinical technique and develop new materials. The theory is designed to improve the level of scientific research and clinical diagnosis, and will set up a new milestone in the field of wound repair.

Objective:To evaluate the effects of ultrasound-guided quadratus lumborum block (QLB) on acute pain after total hip arthroplasty.Methods:A retrospective study was conducted of the 36 patients with hip osteoarthritis who had undergone selective one-side total hip arthroplasty under total intravenous anesthesia (TIVA) from January 2019 to January 2020. According to whether additional QLB was used or not they were divided into 2 equal groups ( n=18). The control group of 10 males and 8 females with an age of 60.5±9.4 years used mere TIVA while the QLB group of 7 males and 11 females with an age of 53.6±12.7 years used TIVA plus QLB. All patients accepted patient-controlled intravenous analgesia (PCIA) postoperatively. The 2 groups were compared in terms of visual analogue scale (VAS) at rest and during exercise and IL-6 level at 24 h postoperation, consumption of opioids and postoperative incidence of nausea and vomiting. Results:There were no significant differences between the 2 groups in their preoperative general data, indicating they were compatible ( P>0.05). The VAS scores at rest and during exercise in the QLB group (0.3 ± 0.5 and 0.8 ± 0.6) were significantly lower than in the control group (2.1 ± 0.7 and 2.7 ± 0.5), the IL-6 level in the former[40.9 (30.5, 56.3) pg/mL] was significantly lower than in the latter[165.0 (82.5, 276.5) pg/mL], the intraoperative total consumptions of sufentanil[6 (6, 7) μg] and remifentanil[1,370 (1,200, 1,485) μg] in the former were significantly lower than in the latter[35 (30, 40) μg and 1, 910 (1, 805, 2, 000) μg], and the postoperative incidenceof nausea and vomiting[27.8%(5/18)] in the former was significantly lower than in the latter[77.8%(14/18)] (all P<0.05). Conclusions:Ultrasound-guided quadratus lumborum block can effectively relieve acute pain in patients after total hip arthroplasty. It can suppress stress-related inflammatory factors, reduce consumption of opioids and incidence of postoperative nausea and vomiting.

Objective:To investigate the prevalence of hypertension and its associated factors in rheumatoid arthritis (RA) patients.Methods:Consecutive Chinese patients with RA were recruited from August 2015 to September 2019 at Department of Rheumatology, Sun Yat-sen Memorial Hospital. Demo-graphic data and clinical data were collected including indicators of disease activity, functional assessment and radiographic assessment, comorbidities and previous medications. Logistic regression analysis was used to evaluate the related factors of hypertension in RA patients.Results:There were 674 RA patients recruited with 82.3%(555/674) female and mean age (50±13) years. The prevalence rate of hypertension was 32.9% (222/674), followed by dyslipidemia (9.9%, n=67), type 2 diabetes (8.8%, n=59), hyperuricemia (8.5%, n=43), fatty liver disease (8.0%, n=54), cardiovascular disease (6.2%, n=42) and chronic kidney disease (3.3%, n=22). Compared with those without hypertension, RA patients with hypertension had advanced age with longstanding disease duration, higher disease activity indicators, worse joint destruction, and higher proportions of comorbidities. Multivariate logistic regression analysis showed that comorbidities including hyperuricemia [ OR=1.977, 95% CI(1.002, 3.900)], dyslipidemia [ OR=1.903, 95% CI(1.102, 3.288)] and fatty liver disease [ OR=2.335, 95% CI(1.278, 4.265)] were risk factors of hypertension after adjustment for age and gender. Conclusion:Hyperten-sion is the most common comorbidity in RA patients which is associated with comor-bidities including hyperuricemia, dyslipidemia and fatty liver disease. Detection and management of hyperten-sion and other cardiovascular disease related comorbidities in RA patients should be emphasized.

BACKGROUND:Muscle aging is closely related to various epigenetic changes,and exercise has a certain regulatory effect on these epigenetic changes.However,the specific mechanism is not fully understood. OBJECTIVE:To review the epigenetic mechanisms of skeletal muscle and how exercise can improve skeletal muscle aging and promote adaptive changes in muscle through these epigenetic mechanisms,aiming to provide a more comprehensive understanding of skeletal muscle aging and disease mechanisms. METHODS:During the period from June 1st to August 1st,2023,literature searches were conducted for relevant literature published from database inception to August 2023 in databases including Web of Science,PubMed,CNKI,WanFang,and VIP.The search terms used included"skeletal muscle,""muscle,""aging,""older adult,""aging,""exercise,""physical exercise,""epigenetic,"and"epigenetics"in Chinese as well as"skeletal muscle,muscle,aging,older adult,senescence,age,exercise,sports,physical activity,epigenetic,epigenetics"in English.Boolean logic operators were used to connect the search terms for retrieval,and corresponding strategies were developed.According to the predetermined inclusion and exclusion criteria,70 eligible articles were selected. RESULTS AND CONCLUSION:Epigenetics refers to the phenomenon where gene expression and function are regulated without changes in gene sequence,and epigenetic changes in skeletal muscle are an important field.The epigenetic mechanisms of skeletal muscle play an important role in muscle aging,mainly involving DNA methylation,histone modification,regulation of non-coding RNAs,chromatin remodeling,changes in mitochondrial function and expression changes of aging-related genes.Exercise significantly regulates the epigenetics of skeletal muscle,including promoting DNA methylation,muscle histone modification,regulating miRNA expression,and regulating lncRNA expression,regulating muscle factors(such as interleukin-6),regulating mitochondrial function(such as peroxisome proliferators-activated receptors γ co-activator 1α).Future studies are recommended for long-term,cross-diverse population-based exercise interventions;the application of multi-omics techniques such as proteomics and metabolomics;strengthening the understanding of epigenetic changes at the single-cell level;cross-species comparative studies as well as human clinical trials for the translation of animal model findings to humans;strategies for combining exercise and pharmacological interventions to assess their synergistic effects;and epigenetic studies of crosstalk interactions between skeletal muscle and different organs.

Objective:To study the predictive role of tumor burden score (TBS) for tumor recurrence after radical resection in patients with hepatocellular carcinoma (HCC).Methods:Clinical data of 202 patients with HCC undergoing radical surgery at the 900th Hospital of Joint Logistics Support Force of the Chinese People's Liberation Army, between January 2015 and December 2017 were retrospectively analyzed, including 128 males and 74 females, aged (53.66±11.93) years old. The receiver operating characteristic (ROC) curve was used to assess the accuracy of TBS in predicting postoperative tumor recurrence. Univariate and multivariate logistic regression analyses were performed to identify independent risk factors influencing postoperative tumor recurrence. A nomogram was established and validated using calibration curves and the C-index. Kaplan-Meier survival analysis was utilized to compare survival differences between the two patient groups.Results:The area under the ROC curve for TBS in predicting postoperative tumor recurrence in HCC patients was 0.779 (95% CI: 0.717-0.842), with an optimal cutoff value of 6.2. Univariate analysis revealed that factors such as hepatitis B virus DNA level >500 IU/ml, larger maximum tumor dia-meter, and TBS>6.2 were significant risk factors for postoperative tumor recurrence (all P<0.05). Multivariate analysis further indicated that TBS>6.2 ( OR=3.60, 95% CI: 1.081-12.012, P=0.037) and maximum tumor diameter ( OR=1.240, 95% CI: 1.034-1.487, P=0.020) were independent risk factors for postoperative recurrence. Based on these risk factors, a nomogram model was established, achieving a C-index of 0.788. Kaplan-Meier survival analysis showed a better postoperative overall survival and recurrence-free survival of the low TBS group compared to those of the high TBS group (all P<0.05). Conclusion:TBS can serve as a predictive indicator for the recurrence after radical resection in patients with HCC. Both TBS and tumor size are independent risk factors for postoperative recurrence. The nomogram model can be used for predicting recurrence following radical resection in HCC patients.