Renal cancer is a common and increasingly prevalent malignancy with a complex pathogenesis influenced by genetics,smoking,and obesity.Current treatment mainly involves surgery with adjunctive chemotherapy,radiation,and immunotherapy,but high rates of recurrence and metastasis indicate its limited effectiveness,emphasizing the need for better therapeutic targets.Growing evidence indicates that epigenetic modifications,particularly RNA modifications,play a critical role in renal cancer development and progression.This review highlights recent advances in renal cancer epigenetics,focusing on RNA modifications such as N6-methyladenosine(m6 A),N7-methylguanosine(m7G),5-methylcytosine(m5C),N1-methyladenosine(m1A),adenosine-to-inosine(A-to-I),N6,2'-O-dimethyladenosine(m6Am),and N4-acetylcytidine(ac4C),along with their regulatory factors.It also explores the diagnostic and therapeutic potential of targeting RNA modifications and associated proteins.

N7-methylguanosine(m7G)modification occurs at the 5'cap of mRNA in eukaryotes,and is also found at specific sites on tRNA and rRNA,showing wide conservation across various biological organisms.Aberrant m7G modification is involved in the dysregulation of gene expression and serves as a biomarker for multiple cancers,with significant potential for applications in tumor diagnosis and therapy.This review summarizes the biological functions and regulatory mechanisms of m7G modification,and outlines its potential clinical applications.It also highlights the oncogenic roles of aberrant m7G modification and its association with prognosis,providing a detailed discussion of the role and molecular mechanisms of abnormal m7G modification in regulating drug resistance in various cancers.

Renal cancer is a common and increasingly prevalent malignancy with a complex pathogenesis influenced by genetics,smoking,and obesity.Current treatment mainly involves surgery with adjunctive chemotherapy,radiation,and immunotherapy,but high rates of recurrence and metastasis indicate its limited effectiveness,emphasizing the need for better therapeutic targets.Growing evidence indicates that epigenetic modifications,particularly RNA modifications,play a critical role in renal cancer development and progression.This review highlights recent advances in renal cancer epigenetics,focusing on RNA modifications such as N6-methyladenosine(m6 A),N7-methylguanosine(m7G),5-methylcytosine(m5C),N1-methyladenosine(m1A),adenosine-to-inosine(A-to-I),N6,2'-O-dimethyladenosine(m6Am),and N4-acetylcytidine(ac4C),along with their regulatory factors.It also explores the diagnostic and therapeutic potential of targeting RNA modifications and associated proteins.

N7-methylguanosine(m7G)modification occurs at the 5'cap of mRNA in eukaryotes,and is also found at specific sites on tRNA and rRNA,showing wide conservation across various biological organisms.Aberrant m7G modification is involved in the dysregulation of gene expression and serves as a biomarker for multiple cancers,with significant potential for applications in tumor diagnosis and therapy.This review summarizes the biological functions and regulatory mechanisms of m7G modification,and outlines its potential clinical applications.It also highlights the oncogenic roles of aberrant m7G modification and its association with prognosis,providing a detailed discussion of the role and molecular mechanisms of abnormal m7G modification in regulating drug resistance in various cancers.

Objective To explore the evaluation value of forkhead box M1(FOXM1)and CC chemokine receptor 5(CCR5)on lung function and prognosis in elderly patients with acute exacerbation of chronic obstructive pulmonary disease(AECOPD).Methods A total of 128 AECOPD patients admitted to Yueyang People's Hospital from January 2022 to January 2023 were collected as the acute exacerbation group,135 stable COPD patients admitted at the same time were regarded as the stable phase group,and 120 health examination volunteers of similar age and gender were regarded as the control group.Enzyme-linked immunosorbent assay(ELISA)was applied to detect the expression levels of FOXM1 and CCR5 in serum,and the vital capacity meter was applied to measure pulmonary function.Pearson method was applied to analyze the correlation between serum FOXM1,CCR5 and lung function indicators in AECOPD patients.Multivariate logistic regression analysis was applied to screen prognostic factors for AECOPD patients.The evaluation value of FOXM1 and CCR5 levels in evaluating poor prognosis of AECOPD patients was analyzed by receiver operating characteristic(ROC)curve.Results In the serum of patients in the AE COPD group and stable stage group,the levels of CCR5(49.36±12.31 ng/ml,34.25±8.87 ng/ml)and FOXM1(40.21±10.74 pg/ml,23.38±5.77 pg/ml)were significantly higher than those in the control group(14.55±4.58 ng/ml,15.06±3.55 pg/ml),while FEV1(1.15±0.13 L,1.67±0.19 L),FVC(2.93±0.30 L,3.28±0.36 L)and FEV1/FVC(39.25％±3.97％,50.91％±5.01％)were lower than those in the control group(1.95±0.26 L,3.57±0.44 L,54.62％±5.20％),with significant differences(F=11 1.034～641.907,all P＜0.05).The levels of serum FOXM1 and CCR5 were gradually increased with the aggravation of lung function grading,while the levels of lung function indicators FEV1 and FVC were gradually decreased with the aggravation of lung function grading,and the differences were statistically significant(F=31.27,49.37;42.72,29.48,all P＜0.05).The serum levels of FOXM1 and CCR5 were negatively correlated with FEV1,FVC and FEV1/FVC(r=-0.639～-0.479,all P＜0.05).Logistic regression analysis found that CCR5[OR(95％CI):3.380(1.944～5.876)],FOXM1[OR(95％CI):5.711(3.175～10.273)],APACHE Ⅱ score[OR(95％CI):2.132(1.243～3.660)],and lung function grading[OR(95CI):2.017(1.007～4.037)]were all risk factors for poor prognosis(all P＜0.05),while FEV1[OR(95％CI):0.649(0.441～0.955)]and FVC[OR(95％CI):0.120(0.073～0.198)]were protective factors for poor prognosis(all P＜0.05).ROC curve results showed that the areas under the curve(AUC)of serum FOXM1 and CCR5 levels in predicting poor prognosis in AECOPD patients were 0.821 and 0.831,respectively.The AUC predicted by the combination of the two was 0.895,which was higher than that detected by a single indicator(Z=2.800,2.654,all P＜0.05).Conclusion FOXM1 and CCR5 were both high levels in the serum of AECOPD patients.Early detection of them can serve as serum markers for evaluating lung function and poor prognosis in AECOPD patients.

Traumatic cerebrospinal fluid leakage commonly presents in traumatic brain injury patients, and it may lead to complications such as meningitis, ventriculitis, brain abscess, subdural hematoma or tension pneumocephalus. When misdiagnosed or inappropriately treated, traumatic cerebrospinal fluid leakage may result in severe complications and may be life-threatening. Some traumatic cerebrospinal fluid leakage has concealed manifestations and is prone to misdiagnosis. Due to different sites and mechanisms of trauma and degree of cerebrospinal fluid leak, treatments for traumatic cerebrospinal fluid leakage varies greatly. Hence, the Craniocerebral Trauma Professional Group of Neurosurgery Branch of Chinese Medical Association and the Neurological Injury Professional Group of Trauma Branch of Chinese Medical Association organized relevant experts to formulate the " Chinese expert consensus on the diagnosis and treatment of traumatic cerebrospinal fluid leakage in adults ( version 2023)" based on existing clinical evidence and experience. The consensus consisted of 16 recommendations, covering the leakage diagnosis, localization, treatments, and intracranial infection prevention, so as to standardize the diagnosis and treatment of traumatic cerebrospinal fluid leakage and improve the overall prognosis of the patients.

Objective: To explore the roles of CD34, VEGF and endothelin-1 in hepatic sinusoid capillarization and the intrahepatic metastasis of hepatocellular carcinoma. Methods: Data of 10 cases of hepatocellular carcinoma without intrahepatic metastasis were compared with those 10 cases of hepatocellular carcinoma with intrahepatic metastasis . Liver cancer tissues and paracancerous tissues were collected, hepatic sinusoidal capillarization was detected by immunohistochemistry, mRNA expression and protein expression of CD34, VEGF and endothelin-1 genes were detected by QPCR, Western blot, and the relationship between gene expression and metastasis of HCC was observed. Results: Hepatic sinusoid capillarization was observed in carcinoma tissues, not in the adjacent tissues, whereas mRNAs and proteins of CD34, VEGF and endothelin-1 were higher in liver cancer tissues than that in the adjacent tissuess. In addition, both mRNA and protein expression levels of these genes were significantly higher in the intrahepatic metastatic liver cancers than those without metastasis (P<0.05). Conclusion CD34, VEGF and endothelin - 1 may play important roles in intrahepatic metastasis of liver cancer.

Objective To investigate the effect of measuring value transfer for human serum samples assigned by the reference laboratory network on improving the trueness of seven enzyme activities in clinical laboratories,such as ALT,AST,GGT,LDH,CK,AMY and ALP.Methods Depending on the medical imtitutions at all levels contacted by 5 reference laboratories in North China,South China,East China and Southwest China,the corresponding clinical laboratory measuring value transfer/traceability network was established.The frozen human serum samples with good interehangeability and standard material characteristics,including calibrator,sample 1 and sample 2,were provided by Beijing Aerospace General Hospital,and were assigned by 5 reference labotatories in four regiom.These samples were sent to 48 clinical laboratories.These clinical laboratories measured sample 1 and sample 2 according to their standard operating procedures,and then measured.the two samples again after adjusting their measurement system by using the supplied calibrator.The changes of trueness of detection results in these laboratories were evaluated according to the WS/T 403-2012 standard,and the changes of consistency for ALT and AST before and after measuring value tramfer were investigated.Results The results of AMY,ALP,GGT,CK and LDH calibrator,sample 1 and sample 2 assigned by the established network were 138.7 U/L,278.5 U/L and 68.3 U/L,265.3 U/L,94.5 U/L and 134.4 U/L,195.8 U/L,89.0 U/L and 158.9 U/L,393.7 U/L,260.0 U/L and 645.3 U/L,and 302.0 U/L,250.0 U/L and 452.7 U/L,respectively.The percentages of sample 1 and sample 2 which met the bias requirements of the WS/T 403-2012 standard before measuring value transfer for AMY,ALP and GGT were 65.9％ and 61.0％,76.6％ and 78.7％,and 66.7％ and 70.8％,respectively,while after measuring value transfer,they were 89.2％ and 83.8％,86.7％ and 80.0％,and 85.4％ and 91.7％,respectively.The percentages of sample 2 which met the bias requirements of the WS/T 403-2012 standard before measuring value transfer for CK and LDH were 64.6％ and 58.3％,respectively,while after measuring value trander,they were 93.5％ and 84.8％,respectively.The coefficients of variation (consistency) of sample 1 and sample 2 for ALT and AST before measuring value tramfer were 12.9％ and 11.3％,and 10.2％ and 8.9％,respectively,while after measuring value transfer,they were 9.3％ and 8.2％,and 5.6％ and 5.9％,respectively.Conclusion The calibration of routine measurement systems based on the measuring value transfer for human serum samples assigned by the reference laboratory network may improve the comparability of 7 enzyme actvities measurement results in chnical laboratories at all levels obviously,which deserves to be further spread.

OBJECTIVE To investigate the effect of curcumin on proliferation of neural stem cells (NSCs) of rats and the mechanism. METHODS NSCs derived from the forebrain of rat E15 embryos were cultured in vitro and identified by neuroepithelial stem cell protein ( nestin and SOX2) staining. NSCs were treated with curcumin 0.1, 0.5, 2.5, 12.5 and 62.5 μmol.L-1 for 24 h, respectively. The cyto-toxicity was estimated by measuring the release of lactate dehydrogenase(LDH). Cell viability and prolif-eration were analyzed respectively by MTT and BrdU assay. The mRNA expression levels of glucocorti-coid receptor (GR), Stat3, Notch1 and p21 were detected by qRT-PCR. The protein expression levels of total GR, Stat3 and phosphorylated Stat3 were measured by Western blotting. RESULTS The primary neural stem cells were identified as NSCs. Curcumin 12.5 and 62.5 μmol.L-1 had cell cytotoxicity( P<0.05). Cell viability assay indicated that curcumin 0.5 and 2.5 μmol.L-1 enhanced NSCs viability( P <0.05), but in 62.5 μmol.L-1 group the cell cytotoxicity was inhibited(P<0.05). Curcumin 0.1, 0.5 and 2.5 μmol.L-1 increased NSCs proliferation ( P < 0. 05), whereas 12. 5 and 62. 5 μmol.L-1 caused a decrease in NSCs proliferation(P<0.05). The mRNA expression level of GR in 0.5 μmol.L-1 group was significantly reduced( P<0.05). Western blotting analysis revealed that the protein expression of GR, Stat3 and p-Stat3 was inhibited by curcumin in 0.5 μmol.L-1 group(P<0.05). CONCLUSION Curcumin stimulates NSCs proliferation, possibly by inhibiting GR mRNA and related protein expression.