The Expert Consensus on Clinical Application of Qinbaohong Zhike Oral Liquid in Treatment of Acute Bronchitis and Acute Attack of Chronic Bronchitis （GS/CACM 337-2023） was released by the China Association of Chinese Medicine on December 13^th， 2023. This expert consensus was developed by experts in methodology， pharmacy， and Chinese medicine in strict accordance with the development requirements of the China Association of Chinese Medicine （CACM） and based on the latest medical evidence and the clinical medication experience of well-known experts in the fields of respiratory medicine （pulmonary diseases） and pediatrics. This expert consensus defines the application of Qinbaohong Zhike oral liquid in the treatment of cough and excessive sputum caused by phlegm-heat obstructing lung， acute bronchitis， and acute attack of chronic bronchitis from the aspects of applicable populations， efficacy evaluation， usage， dosage， drug combination， and safety. It is expected to guide the rational drug use in medical and health institutions， give full play to the unique value of Qinbaohong Zhike oral liquid， and vigorously promote the inheritance and innovation of Chinese patent medicines.

In recent years, the application of artificial intelligence (AI) in the field of biology has witnessed remarkable advancements. Among these, the most notable achievements have emerged in the domain of protein structure prediction and design, with AlphaFold and related innovations earning the 2024 Nobel Prize in Chemistry. These breakthroughs have transformed our ability to understand protein folding and molecular interactions, marking a pivotal milestone in computational biology. Looking ahead, it is foreseeable that the accurate prediction of various physicochemical properties of proteins—beyond static structure—will become the next critical frontier in this rapidly evolving field. One of the most important protein properties is thermodynamic stability, which refers to a protein’s ability to maintain its native conformation under physiological or stress conditions. Accurate prediction of protein stability, especially upon single-point mutations, plays a vital role in numerous scientific and industrial domains. These include understanding the molecular basis of disease, rational drug design, development of therapeutic proteins, design of more robust industrial enzymes, and engineering of biosensors. Consequently, the ability to reliably forecast the stability changes caused by mutations has broad and transformative implications across biomedical and biotechnological applications. Historically, protein stability was assessed via experimental methods such as differential scanning calorimetry (DSC) and circular dichroism (CD), which, while precise, are time-consuming and resource-intensive. This prompted the development of computational approaches, including empirical energy functions and physics-based simulations. However, these traditional models often fall short in capturing the complex, high-dimensional nature of protein conformational landscapes and mutational effects. Recent advances in machine learning (ML) have significantly improved predictive performance in this area. Early ML models used handcrafted features derived from sequence and structure, whereas modern deep learning models leverage massive datasets and learn representations directly from data. Deep neural networks (DNNs), graph neural networks (GNNs), and attention-based architectures such as transformers have shown particular promise. GNNs, in particular, excel at modeling spatial and topological relationships in molecular structures, making them well-suited for protein modeling tasks. Furthermore, attention mechanisms enable models to dynamically weigh the contribution of specific residues or regions, capturing long-range interactions and allosteric effects. Nevertheless, several key challenges remain. These include the imbalance and scarcity of high-quality experimental datasets, particularly for rare or functionally significant mutations, which can lead to biased or overfitted models. Additionally, the inherently dynamic nature of proteins—their conformational flexibility and context-dependent behavior—is difficult to encode in static structural representations. Current models often rely on a single structure or average conformation, which may overlook important aspects of stability modulation. Efforts are ongoing to incorporate multi-conformational ensembles, molecular dynamics simulations, and physics-informed learning frameworks into predictive models. This paper presents a comprehensive review of the evolution of protein thermodynamic stability prediction techniques, with emphasis on the recent progress enabled by machine learning. It highlights representative datasets, modeling strategies, evaluation benchmarks, and the integration of structural and biochemical features. The aim is to provide researchers with a structured and up-to-date reference, guiding the development of more robust, generalizable, and interpretable models for predicting protein stability changes upon mutation. As the field moves forward, the synergy between data-driven AI methods and domain-specific biological knowledge will be key to unlocking deeper understanding and broader applications of protein engineering.

OBJECTIVE To explore whether pachymic acid （Pac） regulates mitochondrial autophagy mediated by the PTEN- induced kinase 1 （PINK1）/Parkin RBR E3 ubiquitin-protein ligase （Parkin） signaling pathway to alleviate myocardial injury in coronary heart disease （CHD） rats. METHODS SD rats were divided into control （Con） group， CHD group， Pac low-dose group （Pac-L group）， Pac high-dose group （Pac-H group）， Pac-H+PINK1/Parkin signaling pathway inhibitor group （Pac-H+3-MA group）， with 10 rats in each group. Except for the Con group， CHD models were established in the remaining groups of rats. After successful modeling， the rats in each group were intraperitoneally injected with the corresponding drugs or normal saline. After continuous intervention for 4 weeks， the left ventricular ejection fraction （LVEF）， left ventricular end-diastolic volume （LVEDV）， left ventricular end-systolic volume （LVESV）， and mean arterial pressure （MAP） of the rats were detected. The levels of creatine kinase isoenzyme （CK-MB）， lactate dehydrogenase （LDH）， cardiac troponin I （cTnI）， and cardiac troponin T （cTnT） in the serum， as well as the levels of tumor necrosis factor-α （TNF-α）， interleukin-10 （IL-10）， IL-1β， reactive oxygen species （ROS）， malondialdehyde （MDA） in the myocardial tissue， and the activities of catalase （CAT） and superoxide dismutase （SOD）， as well as the expression levels of p62， cleaved caspase-3， Parkin， PINK1 proteins and the ratio of microtubule-associated protein 1 light chain 3 Ⅱ （LC3Ⅱ）/LC3Ⅰ ratio were measured. The morphology of myocardial tissue and mitochondrial autophagic vesicles were observed， and the number of mitochondrial autophagic vesicles per unit area and the rate of cardiomyocyte apoptosis were counted. RESULTS Compared with CHD group， LVEF， MAP， IL-10 levels， CAT and SOD activities， p62， Parkin， PINK1 protein expressions， LC3Ⅱ/LC3Ⅰ ratio， the numbers of mitochondrial autophagic vesicles per unit area in the Pac-L and Pac-H E-mail：hzdpft@163.com groups were increased significantly （P＜0.05）； the levels of LVEDV， LVESV， CK-MB， LDH， cTnI， cTnT， TNF-α， IL-1β， ROS and MDA， cell apoptosis rates， and protein expression of cleaved caspase-3 were all decreased significantly （P＜0.05）； and the changes in various indicators were more pronounced in the Pac-H group （P＜0.05）； both groups showed varying degree of improvement in myocardial histopathological morphology. Compared with the Pac-H group， the aforementioned indicators in rats from the Pac-H+3-MA group were all significantly reversed （P＜0.05）. CONCLUSIONS Pac may promote mitochondrial autophagy in cardiomyocytes of CHD rats by activating the PINK1/ Parkin signaling pathway， thereby reducing inflammatory responses and oxidative stress and improving myocardial injury.

Aim To investigate the regulatory mecha-nism of arrhythmia of sodium channel ubiquitination af-ter MI and to study the electrophysiological remodeling mechanism of lncRNA-CCRR after MI for the preven-tion and treatment of arrhythmia after MI.Methods LncRNA-CCRR transgenic mice and C57BL/6 mice injected with lncRNA-CCRR overexpressed adeno-asso-ciated virus were used.Four weeks after infection,the left anterior descending branch of the coronary artery was ligated for 12 h to establish a mouse acute myocar-dial infarction model,and the incidence of arrhythmia was detected by programmed electrical stimulation.Ln-cRNA-CCRR overexpression/knockdown adeno-associ-ated virus and negative control were transfected into neonatal mouse cardiomyocytes(NMCMs),and the model was prepared by hypoxia for 12 h.LncRNA-CCRR expression was detected by FISH,Nav1.5 and UBA6 protein and Nav.1.5 mRNA expression were de-tected by Western blot and real-time quantitative poly-merase chain reaction(qRT-PCR),Nav1.5 and UBA6 expressions were detected by immunofluores-cence,and the relationship between lncRNA-CCRR and UBA6 was detected by RIP.INa current density af-ter CCRR overexpression and knockdown was detected by Whole-cell clamp patch.Results In MI mice,the expression of lncRNA-CCRR decreased,the incidence of arrhythmia increased,the expression of CCRR and Nav1.5 mRNA was down-regulated,the protein ex-pression of Nav1.5 was down-regulated,and the pro-tein expression of UBA6 was up-regulated compared with sham group.Overexpression of CCRR could re-verse the above changes.AAV-CCRR could reverse the down-regulated CCRR and Nav1.5 mRNA levels af-ter hypoxia,and improve the expression of Nav1.5 and UBA6 protein.The direct relationship between ln-cRNA-CCRR and UBA6 was identified by RIP analy-sis.The INa density increased after transfection with AAV-CCRR.The INa density decreased after transfec-tion with AAV-si-CCRR.Conclusions The expres-sion of lncRNA-CCRR decreases after MI,and ln-cRNA-CCRR can improve arrhythmia induced by MI by inhibiting UBA6 to increase the protein expression level of Nav1.5 and the density of INa.

Objective To compare clinical efficacy and complication rate of percutaneous endoscopic transforaminal discec-tomy(PETD),percutaneous endoscopic interlaminar discectomy(PEID)and unilateral biportal endoscopic(UBE)in treating single-segment lumbar disc herniation(LDH).Methods From October 2019 to August 2021,121 LDH patients with single-segment treated by spinal endoscopy were retrospectively analyzed and divided into three groups.In PETD group,there were 48 patients,including 19 males and 29 females,aged from 18 to 72 years old with an average of(44.0±13.9)years old;3 patients with L3,4 segments,27 patients with L4,5 segments,and 18 patients with L5S1 segments.In PEID group,there were 43 patients,including 23 males and 20 females,aged from 20 to 69 years old with an average of(40.1±12.1)years old;1 patient with L3.4 segments,15 patients with L4.5 segments,and 27 patients with L5S1 segments.In UBE group,there were 30 patients,including 12 males and 18 females,agedfrom29 to 72 years old with an average of(41.2±15.0)years old;1 patient with L3,4 segments,18 patients with L4,5 segments,and 11 patients with L5S1 segments.Operation time,blood loss,fluoroscopy times and complica-tions among three groups were observed and compared.Before opertaion,3 months after operation and at the latest follow-up,visual analogue scale(VAS)was used to evaluate low back pain and lower extremity pain,Oswestry disfunction index(ODI)was used to evaluate lumbar function,and modified MacNab was used to evaluate clinical efficacy at the latest follow-up.Re-sults All patients were performed endoscopic spinal surgery completely and were followed up for at least 12 months.One patient occurred dural sac rupture both in PETD and PEID group,and dural sac rupture was small,and there was no obvious discomfort after operation.Two patients were occurred intraoperative rupture of dural sac in UBE group.One patient was occurred cere-brospinal fluid leakage after operation,and was improved after rest in supine position and fluid rehydration.One patient without no significant postoperative discomfort.(1)There were no significant difference in operating time,blood loss and hospital stay between PETD and PEID group(P＞0.05),while UBE group was higher than those of PETD and PEID group(P＜0.05).There was no statistical significance in fluoroscopy times between PEID and UBE group(P＞0.05),but PETD group was higher than that of PEID and UBE group(P＜0.05).(2)VAS of low back pain at 3 months after operation in UBE group was higher than that in PETD and PEID group(P＜0.05),but there was no significant difference between PETD and PEID group(P＞0.05).At the latest follow-up,there was no significant difference in VAS of low back pain among three groups(P＞0.05).(3)Lower ex-tremity pain of VAS and ODI among 3 groups after operation were significantly improved at all time points compared with those before opertaion(P＜0.05),and there were no statistical significance between groups(P＞0.05),and there were no statistical significance in interaction between different time points and operation groups(P＞0.05).(4)At the latest follow-up,according to the modified MacNab standard,the results of PETD group were excellent in 27 patients,good in 16 patients,moderate in 4 patients,poor in 1 patient;in PEID group,27 patients got excellent result,12 good,3 moderate,and 1 poor;in UBE group,16 patients got excellent,10 good,2 moderate,and 2 poor.There was no significant difference among three groups(x2=0.308,P＞0.05).Recurrence of lumbar disc herniation occurred in 1 patient among each three groups,symptoms were improved in 2 pa-tients after symptomatic treatment,and 1 patient was treated in other hospitals.Conclusion PETD,PEID and UBE techniques could achieve good early clinical effects in treating lumbar disc herniation with similar complication rates.Both of PETD and PEID are single-channel minimally invasive surgery,with mild intraoperative tissue damage and quick postoperative recovery;while intraoperative fluoroscopy of PETD was relatively more frequent,and PEID was more suitable for L5S1 segment;UBE is a two-channel surgery,in which the intraoperative soft tissue damage is more severe,but exposure is broad,which is more suit-able for complex cases.

Objective To prospectively compare the clinical efficacy and radiographic outcomes between interlaminar per-cutaneous endoscopic lumbar decompression(IL-PELD)and transforaminar percutaneous endoscopic lumbar decompression(TF-PELD)in the treatment of single-segment lumbar lateral recess stenosis.Methods From April 2018 to July 2021,85 pa-tients with single-segment lumbar lateral recess stenosis underment percutaneous endoscopic lumbar decompression.There were 44 males and 41 females,aged from 49 to 81 years old with an average of(65.5±8.3)years old,duration of lumbar lateral re-cess stenosis ranging from 3 to 83 months with an average of(26.7±16.5)months.They were divided into IL-PELD group and TF-PELD group according to the different operation methods.There were 47 patients in the IL-PELD group,including 28 males and 19 females aged from 50 to 80 yeaes old with an average age was(66.7±9.3)years old.The disease duration ranged from 3 to 65 months with an average of(25.7±15.0)months.There were 38 patients in the TF-PELD group,including 16 males and 22 females,aged from 51 to 78 years old with an average of(64.1±7.6)years old.The disease duration ranged from 4 to 73 months with an average of(27.9±18.3)months The operation time,intraoperative blood loss,intraoperative fluoroscopy,hospi-talization day and complications of the two groups were recorded.Visual analogue scale(VAS)to evaluate low back pain and lower limb pain,Oswestry disability index(ODI)to evaluate lumbar function in preoperative and postoperative period(1 month,6 months and last follow-up)were recorded.the sagittal diameter of the lateral recess of the responsible intervertebral space in preoperative and 1 week after the operation were recorded.Results The operation was successfully completed in both groups without serious complications such as vascular injury,dural sac tear and nerve injury.The operation time in IL-PED group(69.3±19.3)min was significantly longer than that in TF-PELD group(57.5±14.5)min(P＜0.05).There was no significant dif-ference in the intraoperative blood loss between the two groups(P＞0.05).The number of intraoperative fluoroscopy in TF-PELD group(8.8±2.6)times was significantly higher than that in IL-PED group(4.8±1.2)times(P＜0.05).The hospitalization days of the two groups were not statistically significant(P＞0.05).VAS for low back and lower extremity pain and ODI were(5.1±2.2),(6.9±1.3)scores and(71.4±12.6)％in IL-PELD group,and(4.7±1.8),(6.9±1.3)scores and(68.4±13.9)％in TF-PELD group.In the IL-PELD group,the VAS of low back pain was(2.4±1.5),(1.6±0.8),(1.4±0.9)scores,and the VAS of lower extremity pain was(3.0±1.2),(1.6±0.7),(1.5±1.0)scores,ODI was(32.6±11.9)％,(17.4±6.5)％,(19.3±9.3)％;In TF-PELD group,the VAS of low back pain was(2.6±1.4),(1.5±0.6),(1.4±1.0)scores,and the VAS of lower extremity pain was(2.8±1.2),(1.6±0.6),(1.5±1.2)scores,The ODI was(32.0±11.2)％,(15.0±6.1)％,and(20.0±11.3)％.The VAS and ODI of the two groups at each time point after operation were significantly improved compared with those before operation(P＜0.05),but there was no statistically significant difference between the groups(P＞0.05),and there was no statistically sig-nificant difference in the interaction between different time points and groups(P＞0.05).At 1 week after operation,the sagittal diameter of lateral recess in both groups was significantly increased compared with that before operation(P＜0.05),but there was no significant difference between the two groups at each time point(P＞0.05).According to the modified Macnab criteria,IL-PELD group was rated as excellent in 24 cases,good in 19 cases and fair in 4 cases.In TF-PELD group the results were ex-cellent in 19 cases,good in 15 cases,fair in 3 cases and poor in 1 case.There was no significant difference between the two groups(P＞0.05).Conclusion IL-PELD and TF-PELD can expand the lateral recess in the treatment of single level lumbar lateral recess stenosis,and have achieved good clinical effects.

Objective To investigate the clinical efficacy of arthroscopic measurement of intra-articular graft length in the application of total internal reconstruction of the anterior cruciate ligament(ACL).Methods The 60 patients with ACL injury treated between January 2020 and January 2022 were retrospectively analyzed.There were 37 males and 23 females,aged from 22 to 44 years.According to the different surgical methods,they were divided into two groups:conventional surgery group(conventional group)and pull-line measurement group(measurement group),with 30 cases in each group.In the conventional group,there were 20 males and 10 females,with an average age of(30.00±3.95)years old;the body mass index(BMI)was(22.58±1.41)kg·m-2;there were 9 cases on the left side and 21 cases on the right side;the time from injury to operation was(3.00±1.35)days.In the measurement group,there were 17 males and 13 females,with an average of(32.00±4.29)years;BMI was(23.29±1.39)kg·m-2;there were 12 cases on the left side and 18 cases on the right side;the time from injury to oper-ation was(3.00±1.27)days.The clinical data of the patients before surgery,6 months after surgery and 12 months after surgery were collected and recorded.The clinical efficacy of the two methods was compared in terms of postoperative VAS,KOOS,Lysholm score,IKDC score,knee stability(Lachman test,anterior drawer test and axial shift test),the degree of widening of bone tunnel diameter measured by CT at different stages of the postoperative period and MRI scoring system.Results At 12 months after surgery,the VAS of the measurement group was lower than that of the conventional group(P＜0.001).At 12 months after surgery,KOOS scores in the measurement group were higher than those in the conventional group,and there were statistical-ly significant differences in all scores except symptom scores(P＜0.05).Six months after operation,Lysholm total score and IKDC total score in the measurement group were higher than those in the conventional group,and the difference was statistically signifi-cant(P＜0.05).At 12 months after surgery,knee stability tests were performed,and the differences between the Lachman test,anterior drawer test and axial shift test measurement group and the conventional group were not statistically significant(P＞0.05).However,overall knee instability analysis showed that the knee stability of the measurement group was better than that of the con-trol group,and the difference between the groups was statistically significant(P=0.038).The imaging assessment of patients in both groups at 6 months after surgery showed that the widening of tendon tunnel diameter in both femur and tibia was reduced in the measurement group compared with the conventional group after surgery,and the difference was statistically significant(P＜0.05);MRI scores were higher in all patients in the measurement group those in the conventional group,at 6 months and 12 months agter surgery(P＜0.05).Conclusion Arthroscopic measurement of intra-articular cavity graft length in total internal technique for ACL reconstruction,high tendon utilization,good stability,the knee joint function has recovered satisfactorily within one year,and the therapeutic effect is affirmed.

Objective To construct an artificial intelligence assisted diagnosis model based on deep learning for dynamically recognizing gastric lesions and their locations under gastroscopy in real time,and to evaluate its ability to detect and recognize gastric lesions and their locations.Methods The gastroscopy videos of 104 patients in our hospital was retrospectively analyzed,and the video frames were manually annotated.The annotated picture frames of lesion category were divided into the training set and the validation set according to the ratio of 8∶2,and the annotated picture frames of location category were divided into the training set and the validation set according to the patient sources at the ratio of 8∶2.These sets were utilized for training and validating the respective models.YoloV4 model was used for the training of lesion recognition,and ResNet152 model was used for the training of location recognition.The accuracy,sensitivity,specificity,positive predictive value,negative predictive value and location recognition accuracy of the auxiliary diagnostic model were evaluated.Results A total of 68 351 image frames were annotated,with 54 872 frames used as the training set,including 41 692 frames for lesion categories and 13 180 frames for location categories.The validation set consisted of 13 479 frames,comprising 10 422 frames for lesion categories and 3 057 frames for location categories.The lesion recognition model achieved an overall accuracy of 98.8%,with a sensitivity of 96.6%,specificity of 99.3%,positive predictive value of 96.3%,and negative predictive value of 99.3% in validation set.Meanwhile,the location recognition model demonstrated an top-5 accuracy of 87.1% .Conclusion The artificial intelligence assisted diagnosis model based on deep learning for real-time dynamic recognition of gastric lesions and their locations under gastroscopy has good ability in lesion detection and location recognition,and has great clinical application prospects.

Objective:To investigate the effect of CD8+CD28-T cells on acute graft-versus-host disease(aGVHD)after haploidentical hematopoietic stem cell transplantation(haplo-HSCT).Methods:The relationship between absolute count of CD8+CD28-T cells and aGVHD in 60 patients with malignant hematological diseases was retrospectively analyzed after haplo-HSCT,and the differences in the incidence rate of chronic graft-versus host disease(cGVHD),infection and prognosis between different CD8+CD28-T absolute cells count groups were compared.Results:aGVHD occurred in 40 of 60 patients after haplo-HSCT,with an incidence rate of 66.67％.The median occurrence time of aGVHD was 32.5(20-100)days.At 30 days after the transplantation,the absolute count of CD8+CD28-T cells of aGVHD group was significantly lower than that of non-aGVHD group(P=0.03).Thus the absolute count of CD8+CD28-T cells at 30 days after transplantation can be used to predict the occurrence of aGVHD to some extent.At 30 days after transplantation,the incidence rate of aGVHD in the low cell count group(CD8+CD28-T cells absolute count＜0.06/μl)was significantly higher than that in the high cell count group(CD8+CD28-T cells absolute count ≥0.06/μl,P=0.011).Multivariate Cox regression analysis further confirmed that the absolute count of CD8+CD28-T cells at 30 days after transplantation was an independent risk factor for aGVHD,and the risk of aGVHD in the low cell count group was 2.222 times higher than that in the high cell count group(P=0.015).The incidence of cGVHD,fungal infection,EBV infection and CMV infection were not significantly different between the two groups with different CD8+CD28-T cells absolute count.The overall survival,non-recurrent mortality and relapse rates were not significantly different between different CD8+CD28-T cells absolute count groups.Conclusion:Patients with delayed CD8+CD28-T cells reconstitution after haplo-HSCT are more likely to develop aGVHD,and the absolute count of CD8+CD28-T cells can be used to predict the incidence of aGVHD to some extent.The absolute count of CD8+CD28-T cells after haplo-HSCT was not associated with cGVHD,fungal infection,EBV infection,and CMV infection,and was also not significantly associated with the prognosis after transplantation.

Objective:To report the results of national surveillance on the distribution and antimicrobial resistance profile of clinical Gram-positive bacteria isolates from bloodstream infections in China in 2022.Methods:The clinical isolates of Gram-positive bacteria from blood cultures in member hospitals of National Bloodstream Infection Bacterial Resistant Investigation Collaborative System（BRICS）were collected during January 2022 to December 2022. Antibiotic susceptibility tests were conducted by agar dilution or broth dilution methods recommended by Clinical and Laboratory Standards Institute（CLSI）. WHONET 5.6 and SPSS 25.0 software were used to analyze the data.Results:A total of 3 163 strains of Gram-positive pathogens were collected from 51 member units，and the top five bacteria were Staphylococcus aureus（ n=1 147，36.3%），coagulase-negative Staphylococci（ n=928，29.3%）， Enterococcus faecalis（ n=369，11.7%）， Enterococcus faecium（ n=296，9.4%）and alpha-hemolyticus Streptococci（ n=192，6.1%）. The detection rates of methicillin-resistant Staphylococcus aureus（MRSA）and methicillin-resistant coagulase-negative Staphylococci（MRCNS）were 26.4%（303/1 147）and 66.7%（619/928），respectively. No glycopeptide and daptomycin-resistant Staphylococci were detected. The sensitivity rates of Staphylococcus aureus to cefpirome，rifampin，compound sulfamethoxazole，linezolid，minocycline and tigecycline were all >95.0%. Enterococcus faecium was more prevalent than Enterococcus faecalis. The resistance rates of Enterococcus faecium to vancomycin and teicoplanin were both 0.5%（2/369），and no vancomycin-resistant Enterococcus faecium was detected. The detection rate of MRSA in southern China was significantly lower than that in other regions（ χ2=14.578， P=0.002），while the detection rate of MRCNS in northern China was significantly higher than that in other regions（ χ2=15.195， P=0.002）. The detection rates of MRSA and MRCNS in provincial hospitals were higher than those in municipal hospitals（ χ2=13.519 and 12.136， P<0.001）. The detection rates of MRSA and MRCNS in economically more advanced regions（per capita GDP≥92 059 Yuan in 2022）were higher than those in economically less advanced regions（per capita GDP<92 059 Yuan）（ χ2=9.969 and 7.606， P=0.002和0.006）. Conclusions:Among the Gram-positive pathogens causing bloodstream infections in China， Staphylococci is the most common while the MRSA incidence decreases continuously with time；the detection rate of Enterococcus faecium exceeds that of Enterococcus faecalis. The overall prevalence of vancomycin-resistant Enterococci is still at a low level. The composition ratio of Gram-positive pathogens and resistant profiles varies slightly across regions of China，with the prevalence of MRSA and MRCNS being more pronounced in provincial hospitals and areas with a per capita GDP≥92 059 yuan.