1.Umbrella review analysis of the safety and efficacy of vonoprazan in the treatment of peptic ulcers and post-ESD ulcers
Qingmei ZHU ; Min SHI ; Dongliang YANG ; Haixia ZHAO
China Pharmacy 2026;37(3):389-394
OBJECTIVE To analyze the safety and efficacy of vonoprazan (VPZ) in the treatment of peptic ulcer (PU) and post-endoscopic submucosal dissection (ESD) ulcers, providing evidence-based pharmaceutical evidence for clinical practice and medical decision-making. METHODS Retrieved from CNKI, Wanfang, VIP, CBM, PubMed, Embase, Web of Science, and the Cochrane Library, meta-analyses/systematic reviews related to VPZ in the treatment of PU and post-ESD ulcers were collected. Two researchers independently performed literature screening, data extraction, quality assessment of included studies, and evaluation of literature overlap. By employing the umbrella review analysis, a fresh meta-analysis was conducted on all relevant raw research data when a high degree of overlap was identified among the included studies. RESULTS A total of 17 meta-analyses were included, with quality ranging from high to very low; all outcome measures involved showed a very high level of overlap in the included meta-analyses (corrected covered area: 22.22%-100%). In the treatment of post-ESD ulcers, compared to proton pump inhibitor (PPI), VPZ significantly improved the ulcer healing rate at 4 weeks post-ESD [RR=1.27, 95%CI (1.03, 1.56), Z=2.21, P= 0.027] and the ulcer contraction rate post-ESD [MD=0.08, 95%CI (0.00, 0.16), Z=2.09, P=0.037], while significantly reducing the ulcer recurrence rate in patients with a history of PU [RR=0.49, 95%CI (0.32, 0.73), Z=3.49, P=0.001]; the delayed bleeding rate in the VPZ group was significantly lower than that in the lansoprazole subgroup [RR=0.47, 95%CI (0.25, 0.90), Z=2.28, P=0.02]. In the treatment of PU, the incidence of adverse events with VPZ was significantly higher than that with PPI in the duodenal ulcer subgroup [RR=1.13, 95%CI (1.02, 1.26), Z=2.38, P=0.017]. CONCLUSIONS For post-ESD ulcers, VPZ demonstrates superior therapeutic efficacy compared to PPI and can reduce ulcer recurrence rates in patients with a history of PU. However, it does not offer advantages in terms of safety for duodenal ulcer treatment.
2.Expansive open-door laminoplasty combined with unilateral lateral mass screw in the treatment of ossification of posterior longitudinal ligament with cervical instability.
Yang ZHOU ; Chi LI ; Wang-Ying DAI ; Hong-Lin TENG ; Min-Yu ZHU ; Yu WANG ; Jing WANG
China Journal of Orthopaedics and Traumatology 2025;38(2):170-175
OBJECTIVE:
To investigate the effect of expansive open-door laminoplasty combined with single lateral mass screw fixation on the posterior longitudinal ligament ossification and cervical instability and its effect on sagittal balance.
METHODS:
A retrospective analysis of 65 patients with the posterior longitudinal ligament with cervical instability from May 2012 to July 2018 was conducted. The patients were divided into two groups according to the surgical method. Thirty-four patients were treated with open-door laminoplasty including 19 males and 15 females, aged 49 to 60 years old with an average age of (54.4±4.77) years old;symptoms lasted 8 to 39 months with an average of (21.0±8.2) months. Thirty-one patients were treated with single-door laminoplasty combined with single mass screw fixation including 17 males and 14 females, aged 50 to 59 years old with an average age of (55.4±3.2) years;symptoms lasted 7 to 48 months with an average of (23.7±13.1) months. General information of the two groups, including operation time, intraoperative blood loss, and postoperative complications was recorded. Sagittal vertical axis(SVA), C0-C2 and C2-C7 cobb angle were measured by X-ray before operation and at the last follow-up. Clinical efficacy was evaluated using the Japanese Orthopaedic Association(JOA) score.
RESULTS:
Surgery was successful in all patients. The operation time (109±15) min in the single-door laminoplasty combined with lateral mass screw fixation group was longer than that in the single-door group(128±16) min(P<0.05). There was no significant difference in intraoperative blood loss, postoperative axial symptoms and follow-up time between two groups(P>0.05). At the latest follow-up, both groups showed significant improvement in the motor and sensory components of the JOA score and the total JOA score compared to pre-surgery(P<0.05) and no significant change in bladder function score(P>0.05). There was no significant difference between two groups(P>0.05). At the latest follow-up, the C0-C2 Cobb angle increased in both groups compared to preoperative and more the single-door laminoplasty group(P<0.05). The angle of the C2-C7 Cobb angle decreased in both groups, and the reduction was greater in the single-door laminoplasty combined with lateral mass screw fixation group(P<0.05). There was a significant increase in C2-C7 SVA in the single-door laminoplasty group(P<0.05) and no significant change the single-door laminoplasty combined with lateral screw fixation group(P>0.05).
CONCLUSION
Posterior cervical laminoplasty with unilateral lateral mass screw fixation combined with single-door vertebral plate shaping surgery improves the neurological function and quality of life in patients with cervical spondylotic myelopathy complicated by ossification of the posterior longitudinal ligament and cervical instability. Compared with single-door vertebral plate shaping surgery, postoperative cervical lordosis and forward-tilt can be improved.
Humans
;
Middle Aged
;
Male
;
Female
;
Laminoplasty/methods*
;
Ossification of Posterior Longitudinal Ligament/physiopathology*
;
Bone Screws
;
Cervical Vertebrae/physiopathology*
;
Retrospective Studies
;
Joint Instability/surgery*
3.Effects of Yishen Yangsui formula() on pyroptosis in the spinal cord tissue in rats with degenerative cervical myelopathy.
Guo-Liang MA ; He YIN ; Bo XU ; Min-Shan FENG ; Dan ZHANG ; Dian ZHANG ; Xiao-Kuan QIN ; Li-Guo ZHU ; Bo-Wen YANG ; Xin CHEN
China Journal of Orthopaedics and Traumatology 2025;38(5):532-539
OBJECTIVE:
To preliminarily investigate the effects and mechanism of action of Yishen Yangsui Formula (, YSYSF)on the recovery of neurological function in rats with degenerative cervical myelopathy.
METHODS:
Fifty adult SD female rats were randomly divided into control group, sham group, model group, YSYSF group and positive drug group by using randomized numerical table method. In the model group, YSYSF group and positive drug group, polyvinyl alcohol acrylamide interpenetrating network hydrogel(water-absorbent swelling material) was used to construct a rat spinal cord chronic compression model. The sham group was implanted with the water-absorbent swelling material and then removed without causing spinal cord compression. The control group, the sham group and the model group were given equal amounts of saline by gavage, the group of YSYSF was given Chinese herbal medicine soup by gavage 9.1 g·kg-1 once a day, and the positive drug group was given tetrahexylsalicylglucoside sodium monosialate ganglioside by intraperitoneal injection 4.2 mg·kg-1 once a day. The motor function of the rats was assessed by the BBB method after 1, 3, 7, and 14 d of drug administration. The spinal cord tissues were taken from rats executed 14 d after drug administration, and the morphological changes of the spinal cord compression site were observed by HE staining, and the expression levels of Caspase-1, GSDMD, NLRP3, PYCARD, IL-1β, and IL-18 were detected in the area of spinal cord injury by Western blot method.
RESULTS:
The BBB scores of the control group and the sham group were normal at all time points after modeling, which were higher than the BBB scores of the model group, the YSYSF, and the positive drug group (P<0.05). From the 3rd day after gavage, at all time points, the BBB scores of rats in the YSYSF group and the positive drug group were higher than those of rats in the model group (P<0.05). The staining pattern of HE spinal cord tissue was normal in the control group and the sham group, and the HE spinal cord in the model group was severely damaged with a large number of neuron deaths, whereas the damage to the spinal cord and neuron cells was reduced in the YSYSF group and the positive drug group. The expression levels of caspase-1, GSDMD, NLRP3, PYCARD, IL-1β and IL-18 in the spinal cord of the model group were significantly higher than those of the sham group (P<0.0001), and the expression levels of caspase-1, GSDMD, NLRP3, PYCARD, IL-1β, and IL-18 in the YSYSF group and the drug group were significantly lower than those in the model group (P<0.05).
CONCLUSION
YSYSF can improve the motor function of rats with degenerative cervical spinal cord disease, alleviate the pathological changes, and promote the recovery of spinal cord neurological function. The specific mechanism may be related to the inhibition of the activation of inflammatory vesicles NLRP3 and PYCARD, the reduction of the release of inflammatory factors IL-1β and IL-18, the reduction of the expression of caspase-1 and GSDMD, the reduction of cellular death, and the inhibition of inflammatory response.
Animals
;
Female
;
Drugs, Chinese Herbal/administration & dosage*
;
Rats
;
Rats, Sprague-Dawley
;
Pyroptosis/drug effects*
;
Spinal Cord/pathology*
;
NLR Family, Pyrin Domain-Containing 3 Protein
;
Spinal Cord Diseases/drug therapy*
;
Interleukin-1beta/metabolism*
4.Real-World Study of 21-Day Venetoclax Plus Azacitidine Regimen in the Treatment of Newly Diagnosed Unfit-Acute Myeloid Leukemia.
Li-Ying AN ; Min CHEN ; Jin WEI ; Xing-Li ZOU ; Pan ZHAO ; Zhu YANG ; Xun NI ; Xiao-Jing LIN
Journal of Experimental Hematology 2025;33(5):1279-1286
OBJECTIVE:
To observe the efficacy and safety of 21-day venetoclax (VEN) plus azacitidine (AZA) (21-day VA) in newly diagnosed unfit acute myeloid leukemia (AML) patients in the real-world.
METHODS:
The clinical data of patients with unfit-AML who received 21-day VA regimen from December 2020 to July 2024 in our center and completed at least 1 cycle of therapeutic effect assessment was retrospectively collected to analyze the safety, efficacy and its influencing factors.
RESULTS:
A total of 59 patients were enrolled in our study, with a median age of 67(48-87) years old. After 1 cycle of therapy, the composite complete remission (cCR) rate was 74.5%, 54.2% of cases were negative for minimal residual disease (MRD). Among them, the MRD negative rate of patients with NPM1 mutation was significantly higher than that of patients without NPM1 mutation ( P =0.032). The median follow-up of patients was 19(2-38) months, the best cCR and MRD negative rates were 78% and 64.4%, respectively, the median overall survival (OS) time was 12 months, and the median progression free survival (PFS) time was 5 months. Multivariate Cox regression analysis showed less than 4 cycles of VA chemotherapy were independent risk factor for PFS and OS ( P < 0.05). After achieving remission, anemia and thrombocytopenia improved with the increase of the number of chemotherapy cycle.
CONCLUSION
In real-world, 21-day VA regimen still shows significant efficacy in the treatment of newly diagnosed unfit-AML, without adversely affecting remission rate and MRD negative rate of the first cycle.
Humans
;
Leukemia, Myeloid, Acute/drug therapy*
;
Aged
;
Middle Aged
;
Bridged Bicyclo Compounds, Heterocyclic/therapeutic use*
;
Sulfonamides/therapeutic use*
;
Azacitidine/therapeutic use*
;
Aged, 80 and over
;
Male
;
Female
;
Retrospective Studies
;
Nucleophosmin
;
Antineoplastic Combined Chemotherapy Protocols/therapeutic use*
;
Remission Induction
;
Mutation
;
Treatment Outcome
5.Kazinol B alleviates hypoxia/reoxygenation-induced hepatocyte injury by inhibiting the JNK signaling pathway.
Yi ZHU ; Junhui LI ; Min YANG ; Pengpeng ZHANG ; Cai LI ; Hong LIU
Journal of Central South University(Medical Sciences) 2025;50(2):181-189
OBJECTIVES:
Hypoxia/reoxygenation (H/R) injury is a critical pathological process during liver transplantation. Kazinol B has known anti-inflammatory, anti-apoptotic, and metabolic regulatory properties, but its protective mechanism in H/R-induced liver injury remains unclear. This study aims to investigate the protective effects and underlying mechanisms of Kazinol B in H/R-induced hepatocyte injury.
METHODS:
An ischemia-reperfusion model was established in healthy adult male Sprague-Dawley rats, and an in vitro H/R model was created using cultured hepatocytes. Hepatocytes were treated with Kazinol B (0-100 μmol/L) to assess cytotoxicity and protective effects. Cell viability was evaluated using the cell counting kit-8 (CCK-8) and lactate dehydrogenase (LDH) release assays. Expression of apoptosis-related proteins, B-cell lymphoma 2 (Bcl-2), Bcl-2-associated death promoter (Bad), and cleaved caspase-3, was detected by Western blotting. Reactive oxygen species (ROS) levels were assessed via fluorescence probes, and inflammatory cytokines tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) were measured using enzyme-linked immunosorbent assay (ELISA). TdT-mediated nick end labeling (TUNEL) staining was performed to assess DNA damage and apoptosis.
RESULTS:
Kazinol B had no significant effect on hepatocyte viability at 0-50 μmol/L, but showed cytotoxicity at 100 μmol/L (P<0.05). At 0.1-20 μmol/L, Kazinol B significantly improved cell survival, reduced LDH release, decreased apoptosis, and attenuated DNA damage (all P<0.001). At 10 μmol/L, Kazinol B markedly down-regulated Bad and cleaved caspase-3 (both P<0.05), and up-regulated Bcl-2 (P<0.01). It also dose-dependently reduced ROS levels and inflammatory cytokines TNF-α and IL-1β (all P<0.01). Both in vitro and in vivo, Kazinol B inhibited activation of the c-Jun N-terminal kinase (JNK) pathway without affecting extracellular regulated protein kinase (ERK) signaling (P>0.05). TUNEL staining showed that the protective effect of Kazinol B against apoptosis was partially reversed by the JNK agonist anisomycin (P<0.01).
CONCLUSIONS
Kazinol B mitigates hepatocyte injury induced by H/R by inhibiting the JNK signaling pathway. Its protective effect is associated with suppression of oxidative stress and inflammation, indicating its potential as a hepatoprotective agent.
Animals
;
Hepatocytes/pathology*
;
Rats, Sprague-Dawley
;
Male
;
Rats
;
Reperfusion Injury/prevention & control*
;
Apoptosis/drug effects*
;
Reactive Oxygen Species/metabolism*
;
MAP Kinase Signaling System/drug effects*
;
Cell Survival/drug effects*
;
Cell Hypoxia
;
Cells, Cultured
6.Relationship between short-term prognosis and symptoms of vertigo and vestibular function in patients with unilateral flat descending sudden sensorineural hearing loss.
Jingyi ZHU ; Sihan HUANG ; Shuna LI ; Jianyong CHEN ; Guiliang ZHENG ; Qing ZHANG ; Yuan ZHOU ; Yulian JIN ; Jun YANG ; Min LIANG
Journal of Clinical Otorhinolaryngology Head and Neck Surgery 2025;39(10):930-940
Objective:To investigate the relationship between symptoms of vertigo and vestibular functions and short-term hearing outcomes in patients with flat descending sudden sensorineural hearing loss (SSNHL). Methods:A retrospective review was conducted of the vestibular symptoms observed in 48 patients with unilateral flat-down sudden sensorineural hearing loss treated at the Department of Otolaryngology Head and Neck Surgery, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine. Symptoms of vertigo and the results of cervical vestibular-evoked myogenic potentials (cVEMP), ocular VEMP (oVEMP), caloric test and video head-impulse test (vHIT) were collected to determine whether these factors could predict therapeutic efficacy. Results:The symptoms of vertigo was not correlated with prognosis (P>0.05) or with abnormal vestibular functions (P>0.05). Patients with abnormal cVEMP, oVEMP, caloric test or vHIT showed significantly lower effective rates (32.0%, 44.0%, 32.0%, and 24.0%, respectively); the greater the number of abnormal tests, the poorer the outcome. Patients with all four tests abnormal gained only (3.13±15.97) dB HL in hearing recovery, whereas those with normal cVEMP, oVEMP, caloric test or vHIT showed better chances of hearing improvements by (29.22±20.31), (31.18±21.59), (26.17±21.31), and (26.38±24.05) dB HL, respectively. Conclusion:Vestibular function effectively predicts prognosis in flat descending SSNHL. Patients with abnormal vestibular tests, regardless of symptoms of vertigo, responded poorly to treatment, whereas those with normal cVEMP, oVEMP, caloric test and vHIT results achieved better hearing recovery. Abnormal vestibular function implies more extensive and severe inner-ear lesions in patients with SSNHL.
Humans
;
Male
;
Female
;
Retrospective Studies
;
Prognosis
;
Adult
;
Middle Aged
;
Vertigo/diagnosis*
;
Hearing Loss, Sensorineural/diagnosis*
;
Young Adult
;
Hearing Loss, Sudden/diagnosis*
;
Adolescent
;
Aged
;
Vestibular Evoked Myogenic Potentials
7.Study on the effect of Bian-stone-based herbal heat therapy on gastrointestinal reactions during the precon-ditioning period of hematopoietic stem cell transplantation patients
Binlian YAO ; Min XU ; Xiaopei MAO ; Min PENG ; Rui ZHU ; Xiaolan ZHANG ; Menghua YE ; Danhua YANG
Chinese Journal of Nursing 2025;60(12):1420-1426
Objective Exploring the effect of Bian-stone-based herbal heat therapy on herbal heat ironing in gastrointestinal reactions during the preconditioning period of hematopoietic stem cell transplantation patients.Methods Convenience sampling method was used to select 68 cases of hematopoietic stem cell transplantation patients who attended the hematology department of a tertiary-level Chinese medicine hospital in Hangzhou from October 2023 to April 2024 as the study subjects,and the SPSS 26.0 statistical software was used to generate a random number for grouping into an experimental and a control group,with 34 cases in each group.On the basis of intravenous antiemetic medication and routine,the experimental group implemented the Bian-stone-based herbal heat therapy on the basis of intravenous antiemetic medication and conventional nursing care.In the control group,intravenous antiemetic drugs and routine care were used,and the intervention duration of both groups was 14 d,of which 7 d was a course of treatment,with a total of 2 courses of treatment.The incidence of gastroin-testinal reactions,Gastrointestinal Symptom Rating Scale(GSRS)score,Pepsin Ⅰ(PG Ⅰ),Pepsin Ⅱ(PG Ⅱ),and the ratio of PG Ⅰ to PG Ⅱ(PGR)before and after the intervention were compared between the 2 groups.Results The final sample of 66 cases was collected in this study,and 1 patient was dislodged from each of the control group and the experimental group.The comparison of the incidence of gastrointestinal reactions between the 2 groups within 14 days showed that the incidences of nausea,vomiting,abdominal distension,and diarrhea were lower in the experimental group than those in the control group(P<0.05).GSRS scores on days 1,8,and 14 of intervention were compared,and there were effects between groups in both groups(F=5.338,P=0.017).The levels of PG Ⅰ,PG Ⅱ in the experimental group on day 8 of the intervention were lower than those in the control group.The levels of PGR was higher than that in the control group(all P<0.05).The safety of the 2 groups after treatment was evaluated,and the results showed that no serious adverse events occurred in the 2 groups.Conclusion Bian-stone-based herbal heat therapy can improve gastrointestinal reactions and reduce the incidence of gastrointestinal reactions during the preconditioning period of hematopoietic stem cell transplantation patients,which provides clinical guidance for the application of Bian-stone-based herbal heat therapy by nursing staff in the future.
8.Study on the medication rules of traditional Chinese medicine in treating breast cancer based on data mining
Yuan LI ; Lin QIAN ; Chao TIAN ; Tao WU ; Lyuhui HU ; Bingmei ZHU ; Zhihua YE ; Zhizhen TAO ; Min YANG ; Qinxi LIU ; Bihui YANG ; Hang LUO ; Fan QU ; Yi YANG
China Modern Doctor 2025;63(24):68-72,129
Objective To analyze the medication rules of traditional Chinese medicine in treating breast cancer based on real-world data mining.Methods Inpatients with breast cancer who received traditional Chinese medicine treatment at the Affiliated Hospital of Chengdu University of Traditional Chinese Medicine from January 2017 to December 2021 were selected.Python 3.10 software was used to mine traditional Chinese medicine prescription data;SPSS 23.0 software was applied for descriptive analysis,and systematic cluster analysis was performed on high-frequency drugs.Results A total of 3026 consultation records of inpatients with breast cancer were collected.The main traditional Chinese medicine syndrome diagnosis of"predominantly liver depression and Qi stagnation"accounted for 60.94%of the total consultations.A total of 240 kinds of traditional Chinese medicine were used,with a cumulative frequency of 35 462 times.Among them,29 kinds of traditional Chinese medicine such as Danggui,Fuling,Baizhu,Chaihu had a cumulative usage frequency exceeding 300 times.Regarding the four natures of drugs,cold-natured(43.55%),warm-natured(30.05%),and neutral-natured(23.34%)drugs were predominant;In terms of five flavors,sweet(46.12%),bitter(30.91%),and pungent(20.02%)were the main ones.The most frequently used drugs were tonifying herbs(32.77%),followed by heat-clearing herbs(15.96%)and phlegm-resolving herbs(14.71%).Systematic cluster analysis yielded 7 groups of drug combinations.Conclusion In real-world clinical practice,traditional Chinese medicine for breast cancer mainly uses tonifying herbs,reflecting the traditional Chinese medicine principle of"strengthening healthy Qi and cultivating the root"in treating tumors.The four natures and five flavors of drugs follow syndrome differentiation and the combination of cold and heat.The clustered drug combinations have extensive therapeutic effects,covering various syndromes of breast cancer at different stages,which can provide a reference for clinical medication.
9.Develop and assessment of a predictive model for the first-course efficacy of acute myeloid leukemia
Feng ZHU ; Yile ZHOU ; Yi ZHANG ; Liping MAO ; De ZHOU ; Liya MA ; Chunmei YANG ; Wenjuan YU ; Xingnong YE ; Juying WEI ; Haitao MENG ; Min YANG ; Wenyuan MAI ; Jiejing QIAN ; Yanling REN ; Yinjun LOU ; Jian HUANG ; Gaixiang XU ; Wanzhuo XIE ; Hongyan TONG ; Huafeng WANG ; Jie JIN
Chinese Journal of Hematology 2025;46(4):336-342
Objective:To identify the relevant factors for the first-course remission of acute myeloid leukemia (AML) and to develop a predictive model as well as assess its predictive capability.Methods:Clinical data of 749 patients newly diagnosed with AML admitted to the Department of Hematology, the First Affiliated Hospital, Zhejiang University, School of Medicine from January 1, 2019, to April 30, 2023, were collected and randomly divided into training and validation sets. Multivariate logistic regression analysis was conducted to determine variables associated with complete remission in the first course of induction therapy, and a predictive model was established based on these variables. The receiver operating characteristic (ROC) curve of the predictive model was plotted, and the area under the curve (AUC) was calculated.Results:The indicators predicting the first remission course included peripheral blood white blood cell count during onset, CBF::MYH11 fusion gene, CEBPA bZIP region mutation, myelodysplastic syndrome-related gene mutation, and induction chemotherapy regimen selection as independent factors for the first remission course. The model’s area under the training and validation curves was 0.738 (95% CI: 0.696-0.780) and 0.726 (95% CI: 0.650-0.801), respectively. The Hosmer-Lemeshow test results yielded P-values of 0.993 and 0.335, respectively. Conclusion:In this study, the developed model demonstrates a strong predictive capability for the efficacy of the first course of patients with AML, providing valuable guidance to clinicians in assessing patient prognosis and selecting appropriate treatment strategies.
10.Analysis of the genetic characteristics of hemagglutinin and neuraminidase of influenza A(H1N1)pdm09 viruses in Kunming during the 2022-2023 influenza season
Qianqi JIAN ; Yao YANG ; Libo MA ; Xin ZHU ; Min HOU ; Rujin LIU ; Wenlong LI
Chinese Journal of Microbiology and Immunology 2025;45(10):832-838
Objective:To analyze the genetic characteristics of hemagglutinin(HA)and neuraminidase(NA)of influenza A(H1N1)pdm09 viruses in Kunming during the 2022-2023 influenza season.Methods:A total of 15 strains of A(H1N1)pdm09 influenza virus isolated from sentinel hospital surveillance and from outbreaks from April 2022 to March 2023 in Kunming were chosen for sequencing. The genetic analysis,which included sequence alignment,homology analysis,construction of phylogenetic tree and amino-acid mutations analysis,was carried out using MAFFT version 7,MegAlign and MEGA 11.Results:Fourteen strains isolated during the 2022-2023 influenza season in Kunming belong to clade 6B.1A.5a.2a,and A/Kunming/284/2023 belonged to clade 6B.1A.5a.2a.1. They all diverged from the northern hemisphere vaccine strain A/Wisconsin/588/2019 in clade 6B.1A.5a.2 recommended by WHO during the 2022-2023 influenza season. Comparing with the HA of the vaccine strain:A186T and Q189E,which might cause the reduction of vaccine protection,were identified in Sb of 14 strains;P137S,K142R in Ca and A186T,Q189E in Sb were identified in A/Kunming/284/2023 and two strains isolated from Thailand. The four mutations at tow antigenic sites identified immune escape at the molecular level. Q189E in the 190-helix and E224A in the 220-loop,which might change the pathogenicity of A(H1N1)pdm09 viruses,were identified in 15 strains. Comparing with NA of the vaccine strain:S200N in 14 strains and S339L in 1 strain were identified in antigenic sites. The two mutations might reduce the protection of antibodies induced by NA.Conclusion:Strengthening influenza surveillance and timely detecting new variants in Kunming contributes to preventing the importation of foreign strains and issuing early warnings for influenza outbreaks.

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