1.Clinical Observation on the Thumb-tack Needling for Subcutaeous Embedding Combined with Joint Mobilization in the Treatment of Post-stroke Shoulder-Hand Syndrome
Jing-Xia CHEN ; Xiao-Han YUAN ; Hong-Xing LIU ; Bo-Wen LI ; Mei-Yu JIANG ; Ya-Nan ZHAO ; Wen-Feng SONG
Journal of Guangzhou University of Traditional Chinese Medicine 2024;41(3):689-695
		                        		
		                        			
		                        			Objective To observe the clinical efficacy of thumb-tack needling for subcutaeous embedding combined with joint mobilization in the treatment of post-stroke shoulder-hand syndrome.Methods A total of 80 patients with post-stroke shoulder-hand syndrome were randomly divided into a treatment group and a control group,with 40 patients in each group.Both groups were given arthrocentesis,the control group was given ordinary acupuncture on the basis of arthrocentesis,and the treatment group was combined with thumb-tack needling for subcutaeous embedding.One course of treatment was 4 weeks and a total of 4 weeks of treatment was given.After 1 month of treatment,the clinical efficacy of the two groups was evaluated.The changes of Visual Analogue Scale(VAS)of pain scores and simplified Fugl-Meyer Assessment(FMA)scores,as well as the pain-free passive forward flexion and abduction of the shoulder joint of the affected limb were observed before and after treatment.The Simple Quality of Life Scale(SF-36)scores of the patients in the two groups were compared after treatment.The safety and the occurrence of adverse reactions in the two groups were also evaluated.Results(1)The total effective rate was 95.00%(38/40)in the treatment group and 80.00%(32/40)in the control group.The efficacy of the treatment group was superior to that of the control group,and the difference was statistically significant(P<0.05).(2)After treatment,the VAS scores and upper extremity FMA scores of the patients in the two groups were significantly improved(P<0.05),and the treatment group was significantly superior to the control group in improving the VAS scores and upper extremity FMA scores,and the differences were statistically significant(P<0.05).(3)After treatment,the joint mobility of patients in the two groups were significantly improved(P<0.05),and the improvement of shoulder joint movement in the treatment group was superior to that in the control group,and the difference was statistically significant(P<0.05).(4)After treatment,the SF-36 Quality of Life Scale scores of the treatment group were significantly superior to those of the control group in terms of physical function,psychological function,emotional health,and social function levels,and the difference was statistically significant(P<0.05).(5)There was no significant difference in the incidence of adverse reactions between the treatment group and the control group(P>0.05).Conclusion Thumb-tack needling for subcutaeous embedding combined with joint mobilization exert certain effect in the treatment of post-stroke shoulder-hand syndrome.It can significantly improve the pain symptoms of patients,thus improving their quality of life,and the clinical effect is remarkable.
		                        		
		                        		
		                        		
		                        	
2.Construction of recombinant adenovirus vector of Uhrf1 gene and its role in DNA damage repair of cardiomyocytes
Nan JIANG ; Chiyin WANG ; Yu NIE ; Jue WANG
Chinese Journal of Pathophysiology 2024;40(2):238-243
		                        		
		                        			
		                        			AIM:To construct a recombinant adenovirus vector carrying the mouse ubiquitin-like with plant homeodomain and RING finger domains 1(Uhrf1)gene,validate the expression of Uhrf1 in neonatal mouse cardiomyo-cytes and explored its role in hydrogen peroxide(H2O2)-induced DNA damage.METHODS:The mouse Uhrf1 gene cod-ing sequence was amplified by polymerase chain reaction(PCR),digested,and inserted into the pADM-CMV-C-FH vec-tor to create the recombinant adenoviral plasmid ADM-Uhrf1.Following transfection into HEK293T cells,we generated re-combinant adenoviral particles,amplified,purified,and determined the titer.Neonatal mouse cardiomyocytes were infect-ed at an multiplicity of infection(MOI)of 50,UHRF1 protein expression was validated via Western blot and immunofluo-rescence staining.H2O2-induced DNA damage was explored along with adenovirus-mediated Uhrf1 overexpression to inves-tigate its role in DNA damage repair.RESULTS:ADM-Uhrf1 virus titer,determined by capsid immunofluorescence as-say,was 1.8×1013 pfu/L.Western blot confirmed a significant increase in UHRF1 protein expression(P<0.05),with im-munofluorescence indicating predominant nuclear localization.Uhrf1 overexpression effectively inhibited the expression of the DNA damage marker,phosphorylated H2AX protein(γH2AX)(P<0.01).CONCLUSION:We successfully con-structed a recombinant adenoviral vector carrying the mouse Uhrf1 gene,facilitating Uhrf1 overexpression in neonatal mouse cardiomyocytes.Furthermore,this overexpression effectively alleviated DNA damage in cardiomyocytes.
		                        		
		                        		
		                        		
		                        	
3.Study on the characteristics of lymphocyte-specfic protein-tyrosine kinase methylation in the peripheral blood circulation of patients with rheumatoid arthritis
Lingxia XU ; Cen CHANG ; Ping JIANG ; Kai WEI ; Jia′nan ZHAO ; Yixin ZHENG ; Yu SHAN ; Yiming SHI ; Hua Ye JIN ; Yi SHEN ; Shicheng GUO ; Dongyi HE ; Jia LIU
Chinese Journal of Rheumatology 2024;28(3):155-161
		                        		
		                        			
		                        			Objective:To analyze the methylation characteristics of the lymphocyte-specific protein-tyrosine kinase (LCK) promoter region in the peripheral blood circulation of rheumatoid arthritis (RA) patients and its correlation with clinical indicators.Methods:Targeted methylation sequencing was used to compare the methylation levels of 7 CpG sites in the LCK promoter region in the peripheral blood of RA patients with healthy controls (HC) and osteoarthritis (OA) patients. Correlation analysis and ROC curve construction were performed with clinical information.Results:Non-parametric tests revealed that compared with HC [0.53(0.50, 0.57)] and OA patients [0.59(0.54, 0.62), H=47.17, P<0.001], RA patients [0.63(0.59, 0.68)] exhibited an overall increase in methylation levels. Simultaneously, when compared with the HC group [0.38(0.35, 0.41), 0.59(0.55, 0.63), 0.60(0.55, 0.64), 0.59(0.55, 0.63), 0.58(0.53, 0.62), 0.45(0.43, 0.49), 0.57(0.54, 0.61)], the RA group [0.46(0.42, 0.49), 0.70(0.65, 0.75), 0.70(0.66, 0.76), 0.70(0.65, 0.75), 0.69(0.64, 0.74), 0.55(0.51, 0.59), 0.68(0.63, 0.73)] showed a significant elevation in methylation levels at CpG sites cg05350315_60, cg05350315_80, cg05350315_95, cg05350315_101, cg05350315_104, cg05350315_128, and cg05350315_142, with statistically significant differences ( Z=-5.63, -5.89, -5.91, -5.89, -5.98, -5.95, -5.95, all P<0.001). Compared with the OA group [0.65(0.59, 0.69), 0.65(0.60, 0.69), 0.64(0.58, 0.68), 0.50(0.45, 0.54), 0.63(0.58, 0.67)], the RA group [0.70(0.66, 0.76), 0.70(0.65, 0.75), 0.69(0.64, 0.74), 0.55(0.51, 0.59), 0.68(0.63, 0.73)] exhibited a significant increase in methylation levels at CpG sites cg05350315_95, cg05350315_101, cg05350315_104, cg05350315_128, and cg05350315_142, with statistically significant differences ( Z=-3.56, -3.52, -3.60, -3.67, -3.62; P=0.036, 0.042, 0.031, 0.030, 0.030). Furthermore, Pearson correlation coefficient analysis revealed a positive correlation between the overall methylation level in this region and C-reactive protein (CRP) ( r=0.19, P=0.004) and erythrocyte sedimentation rate ( r=0.14, P=0.035). The overall methylation level of the LCK promoter region in the CRP (low) group [0.63 (0.58, 0.68)] was higher than that in the CRP (high) group [0.65(0.61, 0.70)], with statistically significant differences ( Z=2.60, P=0.009). Finally, by constru-cting a ROC curve, the discriminatory efficacy of peripheral blood LCK promoter region methylation levels for identifying RA patients, especially seronegative RA patients, from HC and OA groups was validated, with an AUC value of 0.78 (95% CI: 0.63, 0.93). Conclusion:This study provides insights into the methylation status and methylation haplotype patterns of the LCK promoter region in the peripheral blood of RA patients. The overall methylation level in this region is positively correlated with the level of inflammation and can be used to differentiate seronegative RA patients from the HC and OA patients.
		                        		
		                        		
		                        		
		                        	
4.The Role of Prefrontal Cortex in Social Behavior
Gan-Jiang WEI ; Ling WANG ; Jing-Nan ZHU ; Xiao WANG ; Yu-Ran ZANG ; Chen-Guang ZHENG ; Jia-Jia YANG ; Dong MING
Progress in Biochemistry and Biophysics 2024;51(1):82-93
		                        		
		                        			
		                        			Social behavior is extremely important for the physical and mental health of individuals, their growth and development, and for social development. Social behavioral disorders have become a typical clinical representation of a variety of psychiatric disorders and have serious adverse effects on the development of individuals. The prefrontal cortex, as one of the key areas responsible for social behavior, involves in many advanced brain functions such as social behavior, emotion, and decision-making. The neural activity of prefrontal cortex has a major impact on the performance of social behavior. Numerous studies demonstrate that neurons and glial cells can regulate certain social behaviors by themselves or the interaction which we called neural microcircuits; and the collaboration with other brain regions also regulates different types of social behaviors. The prefrontal cortex (PFC)-thalamus projections mainly influence social dominance and social preference; the PFC-amygdala projections play a key role in fear behavior, emotional behavior, social exploration, and social identification; and the PFC-nucleus accumbens projections mainly involve social preference, social memory, social cognition, and spatial-social associative learning. Based on the above neural mechanism, many studies have focused on applying the non-invasive neurostimulation to social deficit-related symptoms, including transcranial magnetic stimulation (TMS), transcranial electrical stimulation (TES) and focused ultrasound stimulation (FUS). Our previous study also investigated that repetitive transcranial magnetic stimulation can improve the social behavior of mice and low-intensity focused ultrasound ameliorated the social avoidance behavior of mice by enhancing neuronal activity in the prefrontal cortex. In this review, we summarize the relationship between neurons, glial cells, brain projection and social behavior in the prefrontal cortex, and systematically show the role of the prefrontal cortex in the regulation of social behavior. We hope our summarization will provide a reference for the neural mechanism and effective treatment of social disorders. 
		                        		
		                        		
		                        		
		                        	
5.CHEN Bo-Lai's Experience in Treating Low Back Pain of Kidney Deficiency and Phlegm Obstruction Type Based on the Theory of Kidney Being the Root of Phlegm
Wen-Xi SUN ; Qi PENG ; Yu-Fu HUANG ; Jiang-Nan YE ; Hong-Mei LI ; Yong-Peng LIN ; Hong-Shen WANG ; Bo-Lai CHEN
Journal of Guangzhou University of Traditional Chinese Medicine 2024;41(6):1616-1620
		                        		
		                        			
		                        			The kidney governs water and is the congenital foundation.The kidney plays an important role in the transportation and distribution of body fluid,has the interior-exterior relationship with the waterffu-organ bladder,and has the meridian connection with the stomach,the reservoir of water and food,through the thoroughfare vessel.Therefore,the kidney plays a key role in the formation of phlegm.Professor CHEN Bo-Lai believes that low back pain of kidney deficiency and phlegm obstruction type is characterized by deficiency in the origin and excess in the superficiality.Excess in the superficiality is manifested as phlegm obstruction,and deficiency in the origin is manifested as kidney deficiency.Clinically,the patients with low back pain of kidney deficiency and phlegm obstruction type mainly have the manifestations of lumbosacral dull pain and fixed pain,stiffness in the waist,limb numbness or hemiplegia,accompanied by soreness and weakness of waist and knees,and preference for pressing and kneading.The treatment of low back pain of kidney deficiency and phlegm obstruction type can be based on theory of kidney being the root of phlegm,follows the therapy of tonifying kidney and eliminating phlegm,and can be performed by the modified use of basic prescription of Litan Decoction(mainly composed of Euryales Semen,Pinelliae Rhizoma,Sesami Semen Nigrum,Platycladi Semen,Paeoniae Radix Alba,Citri Reticulatae Pericarpium and Poria)together with the assistance of herbs for strengthening spleen and dispersing lung based on the differentiation of the complicated symptoms.The thoughts of Professor CHEN Bo-Lai for the differentiation and treatment of low back pain of kidney deficiency and phlegm obstruction type can be used as a reference for the treatment of low back pain with Chinese medicine.
		                        		
		                        		
		                        		
		                        	
6.Introduction of WEN Jian-Min's Minimally-Invasive Diagnosis and Treatment System for Hallux Valgus and Its Application
Guan-Nan WEN ; Ting CHENG ; Ke-Wei JIANG ; Yi-Biao DOU ; Xiang-Yu XI ; Zhi-Qiang BAI ; Jian-Min WEN
Journal of Guangzhou University of Traditional Chinese Medicine 2024;41(10):2568-2575
		                        		
		                        			
		                        			Hallux valgus is a common disorder of the forefeet,and its diagnosis and treatment have always drawn the attention of the practitioners.This article introduced the minimally-invasive diagnosis and treatment system for hallux valgus of integrated traditional Chinese and western medicine,which was established by Professor WEN Jian-Min after more than 40 years of in-depth clinical practice and research based on the theory of yin-yang balance and theory of tendons and bones in traditional Chinese medicine(TCM)and through the combination of modern surgical experience.The minimally-invasive diagnosis and treatment system for hallux valgus embodies the principles of balancing yin and yang,laying equal stress on tendons and bones,unifying the fixation and functional exercises,and treating the fractures and the whole body simultaneously,and includes the key technologies such as minimally-invasive osteotomy for the first metatarsal bone,curtain-wrapped external fixation,perioperative Chinese medicine therapy based on syndrome differentiation,and rehabilitation and nursing of TCM.The system will provide a systematic guide for the standardized minimally-invasive treatment of hallux valgus,and will supply an important approach to the treatment of other orthopedic diseases with integrated traditional Chinese and western medicine.The minimally-invasive diagnosis and treatment system for hallux valgus reflects the scientific research achievements and clinical experience of Professor WEN Jian-Min,which exerts high significance of reference and application value.
		                        		
		                        		
		                        		
		                        	
7.Analysis on the Medication Law of Bai Changchuan in the Treatment of Chronic Gastritis Based on Data Mining
Lili ZHANG ; Rui YU ; Minghua NAN ; Tingting JIANG ; Ming KANG ; You YU ; Changchuan BAI
Chinese Journal of Information on Traditional Chinese Medicine 2024;31(6):39-46
		                        		
		                        			
		                        			Objective To summarize the medication law and prescription thinking of Professor Bai Changchuan in the treatment of chronic gastritis.Methods Effective medical records of chronic gastritis treated by Professor Bai Changchuan from January 2017 to December 2022 were selected.Frequency statistics,hidden structure model,association rules were used for data mining.Interview of Professor Bai Changchuan for the treatment of chronic gastritis was analyzed from the aspects of basic principles,core prescriptions and prescription thinking.Results Totally 328 medical cases were included,involving 1 128 prescriptions,among which 904 prescription were HP positive,209 prescription were bile reflux,268 prescriptions were located in the cardia,9 prescriptions in the gastric body,and 896 prescriptions in the gastric antrum.The pathological changes were erosion in 524 prescriptions,atrophy in 354 prescriptions,and intestinal metaplasia in 208 prescriptions.108 kinds of Chinese materia medica were involved.The properties were mainly warm,cold,and mild,the tastes were mainly bitter,sweet and pungent,and the main meridians were spleen meridian,lung meridian,and stomach meridian,involving 20 kinds of efficacy.20 hidden variables were obtained from the hidden structure model of high-frequency Chinese materia medica.There were 210 association rules high-frequence between Chinese materia medica.The core combination was ginger Pinelliae Rhizoma-Codonopsis Radix-Citri Reticulatae Pericarpium-Poria-Glycyrrhizae Radix et Rhizoma Praeparata cum Melle-fried Atractylodis Macrocephalae Rhizoma.Different etiology,disease location and pathological changes were associated with Liujunzi Decoction.The association of HP-Pogostemonis Herba,Amomi Fructus,fried Coicis Semen;bile reflux-Magnoliae Officinalis Corte,Aurantii Fructus Immaturu,Aucklandiae Radix,Galli Gigerii Endothelium Corneumm,Bupleuri Radix,fried Crataegi Fructus;gastric antrum-Pogostemonis Herba,Cyperi Rhizoma,Linderae Radix,Typhae Pollen;cardia-Fritillariae Thunbergii Bulbus,Nelumbinis Folium,Curcumae Radix,Aurantii Fructus Immaturu,Magnoliae Officinalis Corte;erosion-Fritillariae Thunbergii Bulbus,Sepiae Endoconcha,Magnoliae Officinalis Corte,Aurantii Fructus Immaturu,Aucklandiae Radix,fried Paeoniae Radix Alba,Catechu;atrophy-Aucklandiae Radix,Magnoliae Officinalis Corte,Fritillariae Thunbergii Bulbus,Cinnamomi Ramulus,Ophiopogonis Radix;intestinal transformation-Aucklandiae Radix,Magnoliae Officinalis Corte,Aurantii Fructus Immaturu,Galli Gigerii Endothelium Corneumm,Fritillariae Thunbergii Bulbus,Linderae Radix,Faeces Trogopterori,Typhae Pollen also had clinical significance.Conclusion Professor Bai Changchuan treats chronic gastritis with a combination of cold and warm,treating both symptoms and root causes,and applying both attack and tonics.The basic principle is to"promote spleen and stomach circulation,eliminate accumulation and stagnation",and the core prescription is Liujunzi Decoction.Combined with microscopic syndrome differentiation,he selects appropriate drugs for treatment.
		                        		
		                        		
		                        		
		                        	
8.Clinical value of pin-bone interface surface culture in diagnosis of pin tract infection in external fixation
Yongyi HUANG ; Nan JIANG ; Chensheng SONG ; Yu YAO ; Bowei WANG ; Yanjun HU
Chinese Journal of Orthopaedic Trauma 2024;26(6):519-524
		                        		
		                        			
		                        			Objective:To evaluate the pin-bone interface surface culture in the diagnosis of pin tract infection in external fixation.Methods:A prospective observational study was conducted to enroll the patients who underwent either partial or complete removal of external fixators after external fixation at Department of Orthopaedic Trauma, Nanfang Hospital, Southern Medical University from June 2023 to September 2023. The secretions from the pin track (pin-soft tissue interface) were plated for bacterial culture. Additionally, the surface of the pins placed within the bone (pin-bone interface) was cultured directly with tryptic soy agar (TSA). Positive cases were subjected to additional analysis using qualitative microbial culture and antibiotic susceptibility testing. Comparisons were made between the cultural results derived from both interfaces.Results:The present study enrolled 23 patients [18 males and 5 females with an age of (37.3±17.6) years] and a duration of bearing external fixation of 8.1 (4.0, 11.3) months. A total of 212 samples were cultured. The positive rate of bacterial culture at the pin-soft tissue interface was 53.8% (57/106), significantly higher than that at the pin-bone interface [17.9% (19/106)] ( P<0.05). No correlation was found in the results of bacterial culture between the pin-bone interface and the pin-soft tissue interface ( r=-0.011, P=0.913). In terms of bacterial strains, single pathogenic bacteria were found in all the 19 positive samples cultured at the pin-bone interface, with Staphylococcus aureus as the most common pathogenic bacteria (7); of the 57 positive samples cultured at the pin-soft tissue interface, single pathogen infection was found in 51 and mixed bacterial infection in 6. Positive culture was found at both interfaces in 10 samples, of which identical bacterial strains were found in 4 and partially identical bacterial strains in 1. A total of 82 bacterial samples were subjected to drug sensitivity testing, of which 74.4% (61/82) were infected with Staphylococcus. The drug sensitivity test of Staphylococcus showed that the top 3 resistant drugs were ampicillin, oxacillin, and penicillin. The top 3 sensitive drugs were vancomycin, teicoplanin, and linezolid, all of which showed little resistance. Conclusions:Pin-bone interface culture of external fixators is a necessary evaluation of the infection of deep bone tissue. Simultaneous culture of pin-bone interface and pin-soft tissue interface can provide more comprehensive basis for the treatment of pin tract infection.
		                        		
		                        		
		                        		
		                        	
9.Surveillance of bacterial resistance in tertiary hospitals across China:results of CHINET Antimicrobial Resistance Surveillance Program in 2022
Yan GUO ; Fupin HU ; Demei ZHU ; Fu WANG ; Xiaofei JIANG ; Yingchun XU ; Xiaojiang ZHANG ; Fengbo ZHANG ; Ping JI ; Yi XIE ; Yuling XIAO ; Chuanqing WANG ; Pan FU ; Yuanhong XU ; Ying HUANG ; Ziyong SUN ; Zhongju CHEN ; Jingyong SUN ; Qing CHEN ; Yunzhuo CHU ; Sufei TIAN ; Zhidong HU ; Jin LI ; Yunsong YU ; Jie LIN ; Bin SHAN ; Yunmin XU ; Sufang GUO ; Yanyan WANG ; Lianhua WEI ; Keke LI ; Hong ZHANG ; Fen PAN ; Yunjian HU ; Xiaoman AI ; Chao ZHUO ; Danhong SU ; Dawen GUO ; Jinying ZHAO ; Hua YU ; Xiangning HUANG ; Wen'en LIU ; Yanming LI ; Yan JIN ; Chunhong SHAO ; Xuesong XU ; Wei LI ; Shanmei WANG ; Yafei CHU ; Lixia ZHANG ; Juan MA ; Shuping ZHOU ; Yan ZHOU ; Lei ZHU ; Jinhua MENG ; Fang DONG ; Zhiyong LÜ ; Fangfang HU ; Han SHEN ; Wanqing ZHOU ; Wei JIA ; Gang LI ; Jinsong WU ; Yuemei LU ; Jihong LI ; Qian SUN ; Jinju DUAN ; Jianbang KANG ; Xiaobo MA ; Yanqing ZHENG ; Ruyi GUO ; Yan ZHU ; Yunsheng CHEN ; Qing MENG ; Shifu WANG ; Xuefei HU ; Wenhui HUANG ; Juan LI ; Quangui SHI ; Juan YANG ; Abulimiti REZIWAGULI ; Lili HUANG ; Xuejun SHAO ; Xiaoyan REN ; Dong LI ; Qun ZHANG ; Xue CHEN ; Rihai LI ; Jieli XU ; Kaijie GAO ; Lu XU ; Lin LIN ; Zhuo ZHANG ; Jianlong LIU ; Min FU ; Yinghui GUO ; Wenchao ZHANG ; Zengguo WANG ; Kai JIA ; Yun XIA ; Shan SUN ; Huimin YANG ; Yan MIAO ; Mingming ZHOU ; Shihai ZHANG ; Hongjuan LIU ; Nan CHEN ; Chan LI ; Jilu SHEN ; Wanqi MEN ; Peng WANG ; Xiaowei ZHANG ; Yanyan LIU ; Yong AN
Chinese Journal of Infection and Chemotherapy 2024;24(3):277-286
		                        		
		                        			
		                        			Objective To monitor the susceptibility of clinical isolates to antimicrobial agents in tertiary hospitals in major regions of China in 2022.Methods Clinical isolates from 58 hospitals in China were tested for antimicrobial susceptibility using a unified protocol based on disc diffusion method or automated testing systems.Results were interpreted using the 2022 Clinical &Laboratory Standards Institute(CLSI)breakpoints.Results A total of 318 013 clinical isolates were collected from January 1,2022 to December 31,2022,of which 29.5%were gram-positive and 70.5%were gram-negative.The prevalence of methicillin-resistant strains in Staphylococcus aureus,Staphylococcus epidermidis and other coagulase-negative Staphylococcus species(excluding Staphylococcus pseudintermedius and Staphylococcus schleiferi)was 28.3%,76.7%and 77.9%,respectively.Overall,94.0%of MRSA strains were susceptible to trimethoprim-sulfamethoxazole and 90.8%of MRSE strains were susceptible to rifampicin.No vancomycin-resistant strains were found.Enterococcus faecalis showed significantly lower resistance rates to most antimicrobial agents tested than Enterococcus faecium.A few vancomycin-resistant strains were identified in both E.faecalis and E.faecium.The prevalence of penicillin-susceptible Streptococcus pneumoniae was 94.2%in the isolates from children and 95.7%in the isolates from adults.The resistance rate to carbapenems was lower than 13.1%in most Enterobacterales species except for Klebsiella,21.7%-23.1%of which were resistant to carbapenems.Most Enterobacterales isolates were highly susceptible to tigecycline,colistin and polymyxin B,with resistance rates ranging from 0.1%to 13.3%.The prevalence of meropenem-resistant strains decreased from 23.5%in 2019 to 18.0%in 2022 in Pseudomonas aeruginosa,and decreased from 79.0%in 2019 to 72.5%in 2022 in Acinetobacter baumannii.Conclusions The resistance of clinical isolates to the commonly used antimicrobial agents is still increasing in tertiary hospitals.However,the prevalence of important carbapenem-resistant organisms such as carbapenem-resistant K.pneumoniae,P.aeruginosa,and A.baumannii showed a downward trend in recent years.This finding suggests that the strategy of combining antimicrobial resistance surveillance with multidisciplinary concerted action works well in curbing the spread of resistant bacteria.
		                        		
		                        		
		                        		
		                        	
10.Newcastle disease virus suppresses antigen presentation via inhibiting IL-12 expression in dendritic cells
NAN FULONG ; NAN WENLONG ; YAN XIN ; WANG HUI ; JIANG SHASHA ; ZHANG SHUYUN ; YU ZHONGJIE ; ZHANG XIANJUAN ; LIU FENGJUN ; LI JUN ; ZHOU XIAOQIONG ; NIU DELEI ; LI YIQUAN ; WANG WEI ; SHI NING ; JIN NINGYI ; XIE CHANGZHAN ; CUI XIAONI ; ZHANG HE ; WANG BIN ; LU HUIJUN
Journal of Zhejiang University. Science. B 2024;25(3):254-270,后插1-后插4
		                        		
		                        			
		                        			As a potential vectored vaccine,Newcastle disease virus(NDV)has been subject to various studies for vaccine development,while relatively little research has outlined the immunomodulatory effect of the virus in antigen presentation.To elucidate the key inhibitory factor in regulating the interaction of infected dendritic cells(DCs)and T cells,DCs were pretreated with the NDV vaccine strain LaSota as an inhibitor and stimulated with lipopolysaccharide(LPS)for further detection by enzyme-linked immunosorbent assay(ELISA),flow cytometry,immunoblotting,and quantitative real-time polymerase chain reaction(qRT-PCR).The results revealed that NDV infection resulted in the inhibition of interleukin(IL)-12p40 in DCs through a p38 mitogen-activated protein kinase(MAPK)-dependent manner,thus inhibiting the synthesis of IL-12p70,leading to the reduction in T cell proliferation and the secretion of interferon-γ(IFN-γ),tumor necrosis factor-α(TNF-α),and IL-6 induced by DCs.Consequently,downregulated cytokines accelerated the infection and viral transmission from DCs to T cells.Furthermore,several other strains of NDV also exhibited inhibitory activity.The current study reveals that NDV can modulate the intensity of the innate?adaptive immune cell crosstalk critically toward viral invasion improvement,highlighting a novel mechanism of virus-induced immunosuppression and providing new perspectives on the improvement of NDV-vectored vaccine.
		                        		
		                        		
		                        		
		                        	
            
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