1.Study on the correlation between inflammatory indicators in the hyperacute phase of acute ischemic stroke and early neurological deterioration, syndrome factors, and prognosis
Ligaoge KANG ; Ying GAO ; Jinyue BAI ; Huan TANG ; Hongbo SHEN ; Lei LIU ; Lingbo KONG
Journal of Beijing University of Traditional Chinese Medicine 2025;48(1):98-107
Objective:
Inflammatory cascade reactions play a crucial role in secondary neuronal injury in acute ischemic stroke (AIS). The aim of this study was to explore the correlations between specific serological indicators, early neurological deterioration (END), disease prognosis, and syndrome factors in AIS based on this injury mechanism.
Methods:
The data for this study were collected from 135 patients with AIS admitted to the emergency department of Fangshan Hospital, Beijing University of Chinese Medicine, within 24 h of onset between November 2019 and May 2021. Among these, 29 patients had complete data and experienced END. Additionally, 9 non-END patients were matched from the remaining 90 patients with complete data, resulting in a total of 38 patients for statistical analysis. Statistical methods, including logistic regression and receiver operating curves, were used to analyze the correlation between serum levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), interleukin-10 (IL-10), vascular endothelial growth factor (VEGF), and intercellular adhesion molecule-1 (ICAM-1) within 24 h of END onset, disease prognosis, and syndrome factors. Grouping criteria included END occurrence, presence of syndrome elements on the first and third day post-onset, and prognosis at 90 days post-onset.
Results:
All 38 cases had onset time of less than 12 h, and there were no significant differences in age, gender, and onset time between the END and non-END groups. The TNF-α serum level within 24 h of onset was not associated with the occurrence of END but was negatively correlated with all-cause mortality at 90 days [0.1
2.Clinical Study on Chaiqin Xiaoyong Decoction (柴芩消痈饮) Combined with Jinhuang Ointment (金黄膏) for the Nodular Stage of Acne Mastitis of Liver Meridian Heat Accumulation Type:A Randomized,Double-Blind,Placebo-Controlled Trial
Tian MENG ; Feifei MA ; Yuanyuan KANG ; Mengfei SHEN ; Shengfang HU ; Meina YE ; Yiqin CHENG ; Hongfeng CHEN
Journal of Traditional Chinese Medicine 2025;66(9):920-926
ObjectiveTo evaluate the clinical efficacy and safety of the traditional Chinese medicine (TCM) compound Chaiqin Xiaoyong Decoction (柴芩消痈饮, CXD) combined with Jinhuang Ointment (金黄膏, JO) in treating the nodular stage of acne mastitis of liver meridian heat accumulation type. MethodsA randomized, double-blind, placebo-controlled clinical trial was conducted. A total of 108 patients with liver meridian heat accumulation type acne mastitis in the nodular stage were randomly assigned to a treatment group and a control group, with 54 patients in each group. Both groups received topical application of JO once daily at a thickness of 3~5 mm for 8 hours, along with standard nursing care. On this basis, the treatment group received oral CXD granules, while the control group received placebo granules, administered twice daily, 3 sachets per dose, for 14 consecutive days. Clinical efficacy, TCM symptom scores, nodule size, visual analogue scale (VAS) pain scores, white blood cell (WBC) count, C-reactive protein (CRP) level, and systemic immune-inflammation index (SII) were compared. At the end of treatment, efficacy and safety indicators were evaluated. A 6-month follow-up was conducted to compare the proportion of patients undergoing surgical treatment. ResultsThe total clinical efficacy rate in the treatment group was 90.38% (47/52), significantly higher than 32.00% (16/50) in the control group (P<0.01). The treatment group also showed significantly lower TCM symptom scores, VAS scores, nodule size, WBC count, CRP level, and SII (P<0.05 or P<0.01). During follow-up, the surgical intervention rate in the treatment group was 5.77% (3/52), lower than 14.00% (7/50) in the control group, with a statistically significant difference (P<0.01). No significant abnormalities were observed in safety indicators before and after treatment in either group. ConclusionCXD effectively reduces nodule size and alleviates symptoms such as redness and pain in patients with acne mastitis of liver meridian heat accumulation type, improves TCM symptom scores, enhances overall clinical efficacy, and demonstrates good safety.
3.Study on the correlation between cranial CT features of acute ischemic stroke onset within 24 h and early neurological deterioration, 90 d prognosis, and traditional Chinese medicine syndrome elements
Ligaoge KANG ; Ying GAO ; Huan TANG ; Hongbo SHEN ; Lei LIU ; Liya LIU ; Yan GAO ; Lingbo KONG
Journal of Beijing University of Traditional Chinese Medicine 2025;48(3):424-437
Objective:
To investigate the potential of conventional cranial computed tomography (CT) in assessing the early neurological deterioration(END), long-term prognosis, and traditional Chinese medicine (TCM) syndrome elements during the acute phase in patients with acute ischemic stroke (AIS).
Methods:
This study included 101 patients with AIS onset within 24 h in the Emergency Department of Fangshan Hospital, Beijing University of Chinese Medicine, from November 2019 to May 2021. To investigate the correlation between the relevant characteristics of the first conventional cranial CT in patients with AIS onset within 24 h and END, 90 d prognosis, and initial syndrome elements, the presence or absence of END, the 90 d prognosis (non-disabling outcome or functionally independent outcome), and the establishment of syndrome elements (internal fire, phlegm-dampness, blood stasis, qi deficiency, yin deficiency) were used as dependent variables and grouping criteria.
Results:
This study included 61 males and 40 females, with an age of (64.43±10.56) years. The time from onset to conventional cranial CT examination was 3.50 (1.50, 9.75) h. Among the patients, there were 70 cases (69.3%) of mild AIS, 30 cases (29.7%) of moderate AIS, and one case (1.0%) of severe AIS. Fifteen patients (14.9%) received intravenous thrombolysis. Among the 101 patients, six syndrome elements were observed within 24 h of onset: internal wind in 101 cases (100.0%), internal fire in 58 cases (57.4%), phlegm-dampness in 60 cases (59.4%), blood stasis in 67 cases (66.3%), qi deficiency in 39 cases (38.6%), and yin deficiency in 23 cases (22.8%). The incidence of END was higher in patients with lesions in the contralateral cerebral hemisphere to the affected limb (32.9%) than in those without such lesions (10.7%), showing a strong positive correlation with END occurrence (OR=4.082, P = 0.026). The incidence of END was higher in patients with lesions in the basal ganglia region (33.3%) and the carotid system blood supply area (32.8%) than in those without lesions in the basal ganglia region (15.8%) and the carotid system territory (14.7%), showing moderate positive correlations with END occurrence (OR=2.667, P =0.047; OR=2.836, P=0.044). The proportion of non-disabling outcomes was lower among patients with white matter degeneration (30.8%) and lesions in the contralateral cerebral hemisphere to the affected limb (52.1%) than in those without white matter degeneration (63.6%) and without such lesions in the contralateral cerebral hemisphere to the affected limb (78.6%), both showing strong negative correlations with the occurrence of non-disabling outcomes (OR=0.254, P=0.034; OR=0.296, P=0.015). Similarly, the proportion of functionally independent outcomes was lower among individuals with white matter degeneration (30.8%) and lesions in the contralateral cerebral hemisphere to the affected limb (64.4%) than in those without white matter degeneration (77.3%) and without such lesions in the contralateral cerebral hemisphere to the affected limb (89.3%), both also showing strong negative correlations with the occurrence of functionally independent outcomes (OR=0.131, P=0.001; OR=0.217, P=0.014). The incidence rates of internal fire, blood stasis, and yin deficiency syndrome elements were 66.7%, 73.0%, and 30.2%, respectively, among patients with lesions in the basal ganglia region, compared to 42.1%, 55.3%, and 10.5% among those without lesions in this region. The presence of lesions in the basal ganglia region showed moderate to strong positive correlations with internal fire and yin deficiency syndrome elements (OR=2.750, P=0.016; OR=3.670, P=0.028). Patients with lesions in the centrum semiovale and corona radiata regions (66.7%) had a higher incidence of qi deficiency than those without lesions in this region (33.7%), showing a strong positive correlation with the occurrence of qi deficiency (OR=3.931, P=0.022). No CT characteristics were found to be correlated with phlegm-dampness syndrome elements.
Conclusion
The first cranial CT in patients with AIS has potential application value in predicting disease progression, assessing prognosis, and diagnosing syndromes, which can provide physicians with diagnostic and treatment decisions to improve the long-term prognosis of patients with AIS.
4.Comparison of the efficacy of heat and acid elution methods for IgG anti-M and anti-Ku
Qunjuan ZENG ; Huaiying KANG ; Dong XIANG ; Wei SHEN ; Chengrui QIAN ; Zhongying WANG ; Guoqin GONG
Chinese Journal of Blood Transfusion 2025;38(7):964-968
Objective: To compare the efficacy of heat and acid elution methods for IgG anti-M and anti-Ku. Methods: Ten samples with IgG anti-M and two samples with IgG anti-Ku were selected and standardized to a titer of 64. These antibodies underwent overnight absorption at 4℃ with O-type MM and kk-type erythrocytes, and then heat and acid elution methods were used on the absorbed sensitized erythrocytes respectively by detecting the titer of anti-M and anti-Ku in the eluate to compare the differences in the elution efficiency of IgG anti-M and anti-Ku between the two elution methods. Results: In heat elution tests, all 10 anti-M samples showed positive results with titers ranging from 8 to 64, while 2 anti-Ku samples yielded negative results. In acid elution tests, all 10 anti-M samples demonstrated negative results, whereas both anti-Ku (n=2) samples exhibited positive reactions with consistent titers of 32. Following acid elution with subsequent heat elution, 8 of 10 anti-M samples showed positive results with titers ranging from 8 to 32, while 2 remained negative. Both anti-Ku samples demonstrated positive with titers of 4. Conclusion: Heat elution demonstrated superior efficiency for IgG anti-M compared to acid elution, whereas acid elution showed greater efficacy for IgG anti-Ku than heat elution.
5.Comparison of the efficacy of heat and acid elution methods for IgG anti-M and anti-Ku
Qunjuan ZENG ; Huaiying KANG ; Dong XIANG ; Wei SHEN ; Chengrui QIAN ; Zhongying WANG ; Guoqin GONG
Chinese Journal of Blood Transfusion 2025;38(7):964-968
Objective: To compare the efficacy of heat and acid elution methods for IgG anti-M and anti-Ku. Methods: Ten samples with IgG anti-M and two samples with IgG anti-Ku were selected and standardized to a titer of 64. These antibodies underwent overnight absorption at 4℃ with O-type MM and kk-type erythrocytes, and then heat and acid elution methods were used on the absorbed sensitized erythrocytes respectively by detecting the titer of anti-M and anti-Ku in the eluate to compare the differences in the elution efficiency of IgG anti-M and anti-Ku between the two elution methods. Results: In heat elution tests, all 10 anti-M samples showed positive results with titers ranging from 8 to 64, while 2 anti-Ku samples yielded negative results. In acid elution tests, all 10 anti-M samples demonstrated negative results, whereas both anti-Ku (n=2) samples exhibited positive reactions with consistent titers of 32. Following acid elution with subsequent heat elution, 8 of 10 anti-M samples showed positive results with titers ranging from 8 to 32, while 2 remained negative. Both anti-Ku samples demonstrated positive with titers of 4. Conclusion: Heat elution demonstrated superior efficiency for IgG anti-M compared to acid elution, whereas acid elution showed greater efficacy for IgG anti-Ku than heat elution.
6.Effect of Ophiopogonin D on lipopolysaccharide-induced apoptosis of alveolar epithelial cells
Qing-Xin KANG ; Shen-Shan JIAO ; Zheng XIONG ; Hui-Ming XI ; Xun-Sheng JIANG ; Zi-Long ZHANG
The Chinese Journal of Clinical Pharmacology 2024;40(12):1744-1748
Objective To investigate the effect of Ophiopogonin D on lipopolysaccharide(LPS)-induced apoptosis of alveolar epithelial cells by regulating the interleukin-6(IL-6)/Janus kinase 2(JAK2)/signal transducer and activator of transcription 3(STAT3)signaling pathway.Methods A549 AT Ⅱ cells cultured in vitro were randomly divided into four groups:control group,LPS group,LPS+Ophiopogonin D group,LPS+Ophiopogonin D+colivelin(JAK2/STAT3 signal activator)group,except for the control group,and cells in all other groups were established injury models while being grouped with Ophiopogonin D and colivelin for treatment.Cell counting kit-8(CCK-8)experiment and flow cytometry were applied to detect cell proliferation and apoptosis in each group;Western blotting was applied to detect the expression of IL-6/JAK2/STAT3 signaling pathway proteins of cells in each group.Results The apoptosis rates of A549 cells in control group,LPS group,LPS+Ophiopogonin D group and LPS+Ophiopogonin D+colivelin group were(2.52±0.73)%,(52.43±4.14)%,(1.67±0.52)%and(47.94±3.43)%;IL-6 protein levels were 0.14±0.03,0.49±0.05,0.17±0.04 and 0.45±0.06,and p-JAK2/JAK2 protein levels were 0.17±0.04,0.64±0.08,0.19±0.06 and 0.61±0.07;p-STAT3/STAT3 protein levels were 0.20±0.06,0.69±0.10,0.22±0.07 and 0.65±0.09;the apoptosis rates of AT Ⅱ cells were(3.01±0.69)%,(55.16±3.94)%,(2.35±0.71)%and(50.28±3.78)%;the levels of IL-6 protein were 0.11±0.03,0.87±0.13,0.19±0.04 and 0.84±0.12;the p-JAK2/JAK2 protein levels were 0.13±0.04,0.56±0.08,0.15±0.03 and 0.53±0.07;p-STAT3/STAT3 protein levels were 0.30±0.08,0.79±0.14,0.33±0.09 and 0.75±0.13.The above indexes:control group,LPS+Ophiopogonin D group compared with LPS group,LPS+Ophiopogonin D+colivelin group compared with LPS+Ophiopogonin D group,the differences were statistically significant(all P<0.05).Conclusion Ophiopogonin D can reduce LPS induced inflammation and oxidative stress levels by inhibiting the activation of IL-6/JAK2/STAT3 signaling pathway,ultimately reducing LPS-induced apoptosis of alveolar epithelial cells.
7.Mechanism of Jiawei Guizhi Fuling Decoction in Alleviating Sciatic Nerve Injury in PDPN Rats by Regulating Mitophagy Through PINK1/Parkin Signaling Pathway
Aihua LIU ; Jinhong LENG ; Ziying LIU ; Xinyu SUN ; Xinyuan SHEN ; Qing KANG ; Zhiyi LI ; Yongming LIU
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(21):42-51
ObjectiveTo observe the mechanism of Jiawei Guizhi Fuling decoction (JGFD) in alleviating sciatic nerve injury in painful diabetic peripheral neuropathy (PDPN) rats by regulating mitophagy through the PTEN-induced putative kinase 1 (PINK1)/Parkin signaling pathway. MethodThe PDPN model was established by intraperitoneal injection of streptozotocin (STZ). After modeling, the rats were randomly divided into JGFD high, medium, and low dose groups (JGFD-H, JGFD-M, JGFD-L; 39.6, 19.8, 9.9 g·kg-1·d-1, respectively), a positive drug group (lipoic acid capsules, LA; 50 mg·kg-1·d-1), and a model group (PDPN). A blank control group (CON) was established. Drug intervention was administered continuously for 8 weeks after modeling. Measurements included body weight and fasting blood glucose of PDPN rats at weeks 0, 2, 4, and 8, mechanical pain threshold and thermal pain threshold at weeks 0 and 8, and motor nerve conduction velocity at week 8. Hematoxylin-eosin (HE) staining was used to observe the morphology of sciatic nerve tissue. The ultrastructure of mitochondria and autophagosomes was observed by transmission electron microscopy. Western blot was performed to detect the protein expression levels of PINK1, Parkin, p62, Beclin-1, and LC3 in sciatic nerve tissue. Additionally, real-time quantitative PCR (Real-time PCR) was performed to detect the mRNA expression levels of PINK1, Parkin, p62, Beclin-1, and LC3 in sciatic nerve tissue. ResultCompared with the CON group, the PDPN group showed a significant decrease in body weight at all time points, a significant increase in fasting blood glucose, significantly shortened mechanical pain and thermal pain thresholds, and significantly reduced motor nerve conduction velocity. The protein and mRNA expression of PINK1, Parkin, Beclin-1, and microtubule-associated protein light chain 3(LC3) in sciatic nerve tissue was significantly reduced, while p62 protein and mRNA expression was significantly increased (P<0.01). Pathological changes included edema of sciatic nerve fibers, segmental demyelination, loose and disordered arrangement of the myelin sheath layers, significant swelling of mitochondria, reduced electron density, disappearance of cristae, and absence of typical autophagosome and autolysosome structures. Compared with the PDPN group, each JGFD dose group showed a significant increase in body weight and a significant reduction in fasting blood glucose (P<0.05, P<0.01). The mechanical pain threshold and thermal pain threshold were significantly prolonged, and motor nerve conduction velocity was significantly increased across all JGFD and LA groups. The expression levels of PINK1, Parkin, Beclin-1, and LC3 proteins and mRNA in sciatic nerve tissue were significantly increased, while p62 protein and mRNA expression levels were significantly decreased (P<0.05, P<0.01). Pathological damage to the sciatic nerve was alleviated to varying degrees, with a relatively intact myelin sheath morphology and intact or slightly edematous outer mitochondrial membrane. Autophagolysosome structures were observed in the JGFD-M and JGFD-H groups. Compared with the LA group, the JGFD-H group showed a significant increase in body weight, a significant reduction in fasting blood glucose, a significant increase in motor nerve conduction velocity, a significant increase in PINK1 protein expression and PINK1, Parkin, and Beclin-1 mRNA expression in sciatic nerve tissue, and a significant decrease in p62 mRNA expression (P<0.05, P<0.01). ConclusionJGFD may alleviate sciatic nerve injury in PDPN rats by activating mitophagy through the regulation of the PINK1/Parkin signaling pathway.
8.Mingshi Formula (明视方) for Low Myopia in Children with Heart Yang Insufficiency Syndrome: A Multicentre, Double-Blind, Randomised Placebo-Controlled Study
Jianquan WANG ; Xinyue HOU ; Zefeng KANG ; Yingxin YANG ; Xinquan LIU ; Zhihua SHEN ; Xiaoyi YU ; Jing YAO ; Fengming LIANG ; Fengmei ZHANG ; Jingsheng YU ; Ningli WANG ; Man SONG ; Hongrui SUN ; Xin YAN
Journal of Traditional Chinese Medicine 2024;65(6):587-593
ObjectiveTo observe the effectiveness and safety of the Chinese herbal medicine Mingshi Granules (明视方颗粒) for low myopia in children with heart yang insufficiency. MethodsA multicentre, prospective, double-blind randomised controlled study was conducted, in which 290 children with low myopia from 8 centres were randomly divided into 145 cases in the treatment group and 145 cases in the control group, and the treatment group was given education, dispensing glasses, and Chinese herbal medicine Mingshi Granules, while the control group was given education, dispensing glasses, and granules placebo. Both Mingshi Granules and placebo granules were taken orally, 1 bag each time, twice daily, 4 weeks of oral intake and 2 weeks of rest as 1 course of treatment, a total of 4 courses of treatment (24 weeks). Equivalent spherical lenses, best naked-eye distance visual acuity, ocular axis, corneal curvature K1, adjustment amplitude, traditional Chinese medicine (TCM) symptom scores, calculate the amount of progression of equivalent spherical lenses, were observed at the 12th and the 24th week of treatment, at the 36th week and 48th week of follow-up, resectively, the control rate of myopia progression was evaluated at the 24th week, and safety indexes were observed before treatment. ResultsThe amount of progression of equivalent spherical lenses was lower in the treatment group than in the control group at the 48-week follow-up (P<0.05). The control rate of myopia progression at 24 weeks after treatment in the treatment group was higher (57.60%, 72/125) than that in the control group (44.63%, 54/121) (P<0.05). The best naked-eye distance visual acuity at 36-week follow-up in the treatment group was higher than that in the control group (P<0.05). Equivalent spherical lenses were significantly lower in both groups at all observation time points compared with pre-treatment (P<0.05), and were higher in the treatment group than in the control group at the 48-week follow-up (P<0.05). The ocular axes of both groups were significantly higher at each observation time point after treatment and at follow-up compared with before treatment (P<0.05). The amount of eye axis growth in the treatment group was lower than that in the control group at 24 weeks after treatment and at the 48-week follow-up (P<0.05). Corneal curvature K1 was significantly lower in the treatment group at the 24th week of treatment compared to pre-treatment (P<0.05). The magnitude of adjustment in the treatment group was significantly higher at the 36-week follow-up and at the 48-week follow-up than before treatment (P<0.05). The scores of white/dark complexion, white coating thin pulse, fatigue and total TCM symptom scores of children in both groups at the 12th, 24th, 36th and 48th weeks of follow-up were significantly lower than those before treatment (P<0.05); the scores of blurred vision at the 24th and 36th weeks of follow-up were significantly lower than those before treatment (P<0.05); and the scores of blurred vision in the treatment group at the 48th week of follow-up were signi-ficantly lower than those before treatment (P<0.05). In the treatment group, the score of fatigue was higher than that of the control group at the 36-week follow-up, and the score of blurred vision was lower than that of the control group at the 48-week follow-up (P<0.05). No adverse reactions or obvious abnormalities of the safety indexes were observed of the two groups during the treatment. ConclusionChinese herbal medicine Mingshi Granules showed the effect of controlling the progression of low myopia, improving the best naked eye distance visual acuity, slowing down the growth of the eye axis, improving some of the TCM symptoms, with good safety.
9.Internal fixation or revision total knee arthroplasty for the treatment of periprosthetic fracture after primary total knee arthroplasty
Jingfeng LIU ; Xiaojun SHI ; Jing YANG ; Pengde KANG ; Zongke ZHOU ; Bin SHEN ; Fuxing PEI
Chinese Journal of Orthopaedics 2024;44(4):203-209
Objective:To analyze the clinical efficacy of internal fixation and prosthesis revision in the treatment of periprosthesis fracture after total knee arthroplasty.Methods:A total of 35 patients (35 knees) with periprosthetic fractures after total knee arthroplasty were retrospectively analyzed from January 2008 to January 2022 in the Department of Orthopaedics, West China Hospital, Sichuan University, including 13 males and 22 females, aged 71.4±4.1 years (range, 62-81 years). Left knee 19 cases, right knee 16 cases. There were 20 cases of Rorabeck type II and 15 cases of Rorabeck type III. The initial replacement was performed using a fixed platform post-stabilized knee prosthesis, which was fixed with bone cement. Patients with Rorabeck type II were treated with internal fixation alone (internal fixation group) and patients with Rorabeck type III underwent revision with replacement prosthesis (revision group). The Hospital for Special Surgery (HSS) score, range of motion (ROM) of knee joint, alignment of lower extremity and incidence of postoperative complications were compared between the two groups.Results:All patients successfully completed the operation and were followed up for 5.2±3.6 years (range, 1-12 years). Intraoperative blood loss was 680±102 ml (range, 420-1100 ml). The operative time in the internal fixation group was 105±17 min, which was less than 140±21 min in the revision group, and the difference was statistically significant ( t=-5.450, P<0.001). There was no complication of nerve or blood vessel injury during the operation. Five cases in the internal fixation group had unsatisfactory lower extremity force lines (>3° deviation from normal) after surgery, and all lower extremity force lines in the revision group were satisfied, and the difference in the satisfaction rate of lower extremity force lines between the two groups was not statistically significant ( P=0.057). The fracture healing time, knee ROM and HSS scores at the last follow-up were 5.1±1.3 months, 86°±5° and 84±5 in the internal fixation group and 4.8±1.5 months, 83°±6° and 82±4 in the revision group. One case in the revision group was diagnosed postoperatively with periprosthetic infection with pathogen culture suggestive of Candida albicans, recurrent anterior knee sinus tracts and patellar ectasia, which progressed to osteomyelitis, and mid-thigh amputation was performed 1 year after revision. Conclusion:The stability of prosthesis is an important reference for the treatment of periprosthetic fractures after total knee arthroplasty. Strong internal fixation in patients with unloosened prosthesis and revision with replacement of prosthesis in patients with loose prosthesis can achieve good knee joint function.
10.National bloodstream infection bacterial resistance surveillance report (2022) : Gram-negative bacteria
Zhiying LIU ; Yunbo CHEN ; Jinru JI ; Chaoqun YING ; Qing YANG ; Haishen KONG ; Haifeng MAO ; Hui DING ; Pengpeng TIAN ; Jiangqin SONG ; Yongyun LIU ; Jiliang WANG ; Yan JIN ; Yuanyuan DAI ; Yizheng ZHOU ; Yan GENG ; Fenghong CHEN ; Lu WANG ; Yanyan LI ; Dan LIU ; Peng ZHANG ; Junmin CAO ; Xiaoyan LI ; Dijing SONG ; Xinhua QIANG ; Yanhong LI ; Qiuying ZHANG ; Guolin LIAO ; Ying HUANG ; Baohua ZHANG ; Liang GUO ; Aiyun LI ; Haiquan KANG ; Donghong HUANG ; Sijin MAN ; Zhuo LI ; Youdong YIN ; Kunpeng LIANG ; Haixin DONG ; Donghua LIU ; Hongyun XU ; Yinqiao DONG ; Rong XU ; Lin ZHENG ; Shuyan HU ; Jian LI ; Qiang LIU ; Liang LUAN ; Jilu SHEN ; Lixia ZHANG ; Bo QUAN ; Xiaoping YAN ; Xiaoyan QI ; Dengyan QIAO ; Weiping LIU ; Xiusan XIA ; Ling MENG ; Jinhua LIANG ; Ping SHEN ; Yonghong XIAO
Chinese Journal of Clinical Infectious Diseases 2024;17(1):42-57
Objective:To report the results of national surveillance on the distribution and antimicrobial resistance profile of clinical Gram-negative bacteria isolates from bloodstream infections in China in 2022.Methods:The clinical isolates of Gram-negative 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:During the study period,9 035 strains of Gram-negative bacteria were collected from 51 hospitals,of which 7 895(87.4%)were Enterobacteriaceae and 1 140(12.6%)were non-fermenting bacteria. The top 5 bacterial species were Escherichia coli( n=4 510,49.9%), Klebsiella pneumoniae( n=2 340,25.9%), Pseudomonas aeruginosa( n=534,5.9%), Acinetobacter baumannii complex( n=405,4.5%)and Enterobacter cloacae( n=327,3.6%). The ESBLs-producing rates in Escherichia coli, Klebsiella pneumoniae and Proteus spp. were 47.1%(2 095/4 452),21.0%(427/2 033)and 41.1%(58/141),respectively. The prevalence of carbapenem-resistant Escherichia coli(CREC)and carbapenem-resistant Klebsiella pneumoniae(CRKP)were 1.3%(58/4 510)and 13.1%(307/2 340);62.1%(36/58)and 9.8%(30/307)of CREC and CRKP were resistant to ceftazidime/avibactam combination,respectively. The prevalence of carbapenem-resistant Acinetobacter baumannii(CRAB)complex was 59.5%(241/405),while less than 5% of Acinetobacter baumannii complex was resistant to tigecycline and polymyxin B. The prevalence of carbapenem-resistant Pseudomonas aeruginosa(CRPA)was 18.4%(98/534). There were differences in the composition ratio of Gram-negative bacteria in bloodstream infections and the prevalence of main Gram-negative bacteria resistance among different regions,with statistically significant differences in the prevalence of CRKP and CRPA( χ2=20.489 and 20.252, P<0.001). The prevalence of CREC,CRKP,CRPA,CRAB,ESBLs-producing Escherichia coli and Klebsiella pneumoniae were higher in provinicial hospitals than those in municipal hospitals( χ2=11.953,81.183,10.404,5.915,12.415 and 6.459, P<0.01 or <0.05),while the prevalence of CRPA was higher in economically developed regions(per capita GDP ≥ 92 059 Yuan)than that in economically less-developed regions(per capita GDP <92 059 Yuan)( χ2=6.240, P=0.012). Conclusions:The proportion of Gram-negative bacteria in bloodstream infections shows an increasing trend,and Escherichia coli is ranked in the top,while the trend of CRKP decreases continuously with time. Decreasing trends are noted in ESBLs-producing Escherichia coli and Klebsiella pneumoniae. Low prevalence of carbapenem resistance in Escherichia coli and high prevalence in CRAB complex have been observed. The composition ratio and antibacterial spectrum of bloodstream infections in different regions of China are slightly different,and the proportion of main drug resistant bacteria in provincial hospitals is higher than those in municipal hospitals.


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