Objective To compare the transfection efficiency between different transfection methods in human HepG2 and SGC7901/ADM cells so as to provide experimental basis for further study .Methods To electrons fect the enhanced GFP plasmid into HepG2 and SGC7901/ADM cells by lipofection and electroporation methods ,respectively .The survival rates and transfection efficiency were analyzed .Results The efficiency of eGFP vector transfected into HepG2 cells by lipofection was (23 .8 ± 2 .1)% , compared with lipofection method ,the efficiency of eGFP plasmid transfected by electroporation was up to (49 .6 ± 2 .5)% ,and the difference was statistically significant(P<0 .05) .The efficiency of SGC7901/ADM cells by lipofection was (25 .4 ± 1 .3)% ,com‐pared with lipofection method ,the efficiency of electroporation was up to(52 .6 ± 2 .1)% ,and the difference was statistically signifi‐cant(P<0 .05) .This study provides reliable test parameters for electransfection of HepG2 and SGC7901/ADM cells .Conclusion The transfection efficiency of large fragment vector is efficiently improved by electroporation .

Branch atheromatous disease(BAD)is a common cause of ischaemic stroke.BAD-associated stroke is mild at the onset of clinical symptoms,but is prone to early neurological deterioration with fluctuating symptoms and progressive motor deficits,which often leads to poor prognosis due to lack of timely treatment.Therefore,there is an urgent need for early identification and timely intervention for BAD-related stroke.However,the pathogenesis of BAD-associated stroke has not been fully elucidated,the diagnostic tools have not been standardised,and there is a lack of strong evidence-based medical evidence for its treatment.The purpose of this article is to review the pathogenesis,diagnostic tools,complications,and treatment strategies of BAD-related stroke.

OBJECTIVE: To carry out genetic diagnosis for a fetus. METHODS: Chromosome G-banding and chromosomal microarray analysis (CMA) were carried out for a fetus with abnormal morphology of lateral cerebral fissure. RESULTS: The karyotype of the fetus was normal, but CMA showed that it has carried a 1.4 Mb deletion at 17p13.3 region, which suggested a diagnosis of Miller-Dieker syndrome (MDS). CONCLUSION Familiarity with clinical features and proper selection of genetic testing method are crucial for the diagnosis of MDS. Attention should be paid to microdeletions and microduplications which can be missed by conventional chromosomal karyotyping.
Chromosome Banding ; Chromosome Deletion ; Chromosomes, Human, Pair 17 ; Classical Lissencephalies and Subcortical Band Heterotopias/genetics* ; Female ; Fetus ; Humans ; Karyotyping ; Pregnancy ; Prenatal Diagnosis

Objective To investigate the relationship between systemic immune-inflammation index (SII)and lower extremity vascular disease in patients with type 2 diabetes mellitus (T2DM).Methods A cross-sectional study was conducted on 390 T2DM patients admitted in our department from January 2013 to January 2024.According to the diagnostic criteria for lower extremity vascular disease in T2DM patients,they were divided into a lower extremity vascular disease group (n=158)and a control group (n=232).General data and results of laboratory tests were compared between the 2 groups.Spearman correlation analysis was used to identify the related factors for lower extremity vascular diseases in T2DM patients.The correlation between SII and lower extremity vascular diseases in T2DM patients was analyzed using the Row Mean Scores and Cochran-Armitage Trend analysis.Multivariate logistic regression analysis was applied to identify the risk factors for lower limb vascular lesions in T2DM patients.Receiver operating characteristic (ROC)curve was plotted to evaluate the diagnostic efficacy of SII for lower extremity vascular disease in the patients.Results Compared with T2DMpatients without lower extremity vascular disease,those with lower extremity vascular disease were older,had higher levels of total cholesterol (TC),low-density lipoprotein cholesterol (LDL-C),SII,larger proportion of carotid vascular lesions,and increased proportion of no-taking statins.The lower extremity vascular disease in T2DM patients was positively correlated with SII/100 (r=0.429,P<0.001),age (r=0.517,P<0.001),TC (r=0.161,P=0.001),LDL-C (r=0.117,P=0.021),carotid artery lesions (r=0.101,P=0.047),no-taking statins (r=0.266,P<0.001).Logistic regression analysis showed that SII,age,LDL-C,and no-taking statins were the risk factors for lower extremity vascular lesions in T2DM patients (P<0.01).The area under the curve (AUC)value of SII combined with age,LDL-C,and no-taking statins in predicting lower extremity vascular disease in T2DM patients was 0.896.Conclusion SII is not only a risk factor,but also a simple marker for lower extremity vascular disease in T2DM patients,suggesting that inflammatory response plays an important role in the occurrence and development of lower extremity vascular disease in T2DM.

Purpose/Significance To explore the feasibility of applying blockchain technology to the current healthcare system of hos-pitals,and to achieve the purpose of protecting patients'privacy to the greatest extent possible at a lower cost.Method/Process 505 questionnaires are randomly distributed and collected from people of different age groups in Beijing,Tianjin,Shanghai and Shenzhen who have a certain degree of understanding of blockchain technology,and the results are analyzed.Result/Conclusion Different age groups are highly concerned about personal privacy and privacy protection,and are willing to accept blockchain as an emerging technology.There is a greater demand and acceptance for the application of blockchain technology in the primary health care systems.