1.Impact factors for early extubation and drainage volume after sublobectomy: A propensity score matching study
Caiyi ZHANG ; Xingchi LIU ; Shiguang XU ; Wei XU ; Ming CHENG ; Boxiao HU ; Bo LIU
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2025;32(01):87-93
Objective To compare the incidence of complications after removal of chest drainage tube in the early and late stages after sublobectomy for non-small cell lung cancer (NSCLC), and to analyze the factors affecting postoperative pleural drainage volume (PDV), so as to explore the countermeasures and achieve rapid postoperative rehabilitation. Methods The patients with NSCLC who underwent minimally invasive sublobectomy in our hospital from January to October 2021 were enrolled. According to the median time of extubation, the patients were divided into an early extubation group (time with tube≤3 days) and a late extubation group (time with tube>3 days). The patients were matched via propensity score matching with a ratio of 1:1 and a caliper value of 0.02. The incidence of complications and perioperative parameters after removal of the thoracic drainage tube were analyzed and compared between the two groups, and univariate and multiple linear regression analyses were performed. Results A total of 157 patients were enrolled, including 79 males and 78 females, with an average age of (58.22±11.06) years. There were 76 patients in the early extubation group, 81 patients in the late extubation group, and 56 patients were in each group after propensity score matching. Compared with late extubation group, there was no significant difference in the incidence of infection after extubation (10.7% vs. 16.1%, P=0.405) or pleural effusion after extubation (5.4% vs. 3.6%, P=0.647) in early extubation group, and there was no second operation in both groups. Univariate analysis showed that smoking history (P=0.001), postoperative serum albumin reduction value (P=0.017), surgical approach (P=0.014), lesion location (P=0.027), differentiation degree (P=0.041), TNM stage (P=0.043), number of dissected lymph nodes (P=0.016), and intraoperative blood loss (P=0.016) were infuencing factors for increased postoperative PDV. Multiple linear regression analysis showed that smoking history (P=0.002), postoperative serum albumin reduction value (P=0.041), and the number of dissected lymph nodes (P=0.023) were independent risk factors for increased postoperative PDV. Conclusion There is no significant difference in the incidence of complications after extubation between early and late extubations. Preoperative smoking history, excessive postoperative serum albumin decreases, and excessive number of dissected lymph nodes during the surgery are independent risk factors for increased postoperative PDV.
2.Exploratory study of MRI of the clavicle's sternal end in the assessment of bone age in chinese adolescents
Qinjin LIU ; Yushan LIN ; Junhong LIU ; Lirong QIU ; Yufan GUI ; Yihui LUO ; Ting LU ; Hao DAI ; Zhao PENG ; Bo REN ; Cuiping ZHANG ; Gang NING ; Zhenhua DENG ; Ming YANG ; Fei FAN
Chinese Journal of Forensic Medicine 2025;40(1):49-55
Objective To investigate the value of MRI of the sternal end of clavicle in bone age assessment in Chinese population,especially its applicability in the determination of criminal responsible age.Methods A total of 431 patients aged from 10.00 to 29.99 years with neck or chest MRI were retrospectively collected.According to the Schmeling grading method,the epiphyseal development of the clavicle MRI was divided into five grades.The consistency of methods was evaluated.The correlation and general descriptive analysis between MRI grades and age was analyzed.The sex difference was analyzed.Curve fitting was used to establish a nonlinear model between age and grades.Results The grades of clavicle MRI showed a significant age-related trend(Figure 2),and the correlation was 0.861(0.887 in males and 0.840 in females).Except for grade 1,there was no significant difference between males and females in other grades.The minimum age of male grade 3 was greater than 14 years old,and the minimum age of female grade 3 was greater than 16 years old.The minimum age in grade 4 and grade 5 was over 18 years old in both sexes.The best curve fitting model was cubic model for both sexes(R2=0.805 for men and 0.722 for women).Conclusion Clavicle MRI can be used for the assessment of bone age in Chinese population.Complete epiphyseal plate closure can be used as a reliable indicator for the determination of age at 18 years old,and it is expected to achieve radiation-free forensic bone age assessment.
3.A comparative study of the outcomes of primary reverse total shoulder arthroplasty and revision procedure after treatment failure of complex proximal humerus fractures in elderly patients
Bingshan YAN ; Ming XIANG ; Lei HAN ; Junyang LIU ; Bo ZHANG ; Xu TIAN ; Lintao LIU ; Jingming DONG
Chinese Journal of Orthopaedics 2025;45(15):984-992
Objective:To evaluate the clinical outcomesof primary reverse total shoulder arthroplasty (RTSA) and revision procedure with RTSA after treatment failure of complex proximal humeral fractures in the elderly.Methods:A retrospective analysis was conductedon 24 elderly patients with Neer three- or four-part proximal humeral fractures who underwent RTSA revision after treatment failure (RTSA revision group) from January 2017 to June 2022. There were 7 males and 17 females included, with a mean age of 78.23±5.78 years (range, 67-86 years). Forty-eight patients who underwent primary RTSA (primary RTSA group) during the same time period were selected by propensity score matchingin a 1∶2 ratio as controls, based on age, dominanthand, etiology, Neer typing, glenohumeral joint dislocation, rotator cuff integrity, and osteoporosis T-score. The primary RTSA group included 12 males and 36 females, with a mean age of 76.38±6.15 years (range, 65-87 years). Clinical indicators including demographic characteristics, healing rate of the greater tuberosity, visual analogue score (VAS), Constant-Murley score, American Shoulder and Elbow Surgeons (ASES), shoulder range of motion (ROM), patient satisfaction, and complication rate were collected and analyzed.Results:The mean follow-up duration was 40(32, 60) months (range, 25-72 months) in the primary RTSA group and 38(30, 61) months (range, 24-68 months) in RTSA revision group. There was no significant difference (χ 2=5.058, P=0.168) in the healing rate of the greater tuberosity between the primary RTSA group (41/48, 85.4%) and the RTSA revision group (15/24, 62.5%). Compared with preoperative status, the ROM of anterior elevation, abduction supination, external rotation, VAS score, Constant-Murley score, and ASES score were significantly improved at the last follow-up (all P<0.05) in the RTSA revision group. The anterior elevation (123.74°± 16.57°), abduction supination (113.73°±16.42°), and external rotation (36.45°±10.36°) in the primary RTSA group were superior to those in the RTSA revision group (109.43°±18.75°, 98.64°±15.47°, 30.47°±10.64°, respectively), the difference was statistically significant ( P<0.05). No statistical difference of ROM of internal rotation between the two groups was found (χ 2=4.034, P=0.133). At the last follow-up, the Constant-Murley scores (75.47±11.66) and ASES scores (73.58±15.72) of the primary RTSA group were higher than those in the RTSA revision group (60.43±10.24 and 63.28±18.77, respectively), and the differences were statistically significant ( P<0.05). In terms of VAS (1.66±0.93 vs. 2.02±1.15) and patient satisfaction [83%(40/48) vs. 88%(21/24)], no statistical difference was identified ( P>0.05). The complication rate were 10.4% (5/48) in the primary RTSA group and 20.8% (5/24) in the RTSA revision group (χ 2=1.452, P=0.285), with no serious complications requiring revision surgery in either group. Conclusions:For elderly patients with proximal humeral fractures after failed operation, RTSA revision might effectively improve the limb function and alleviatepain. However, compared with RTSA revision, primary RTSA demonstrated superiorearly clinical outcomes in shoulder ROM and functional recovery.
4.Effect of 3D printing extravascular stent implantation on hemodynamics of large vessels in patients with nutcracker syndrome
Jingxi DU ; Zhen WANG ; Ming YUAN ; Jiahe LIANG ; Bo ZHANG ; Lijun YUAN ; Yong YANG
Chinese Journal of Ultrasonography 2025;34(1):39-45
Objective:To explore the effect of 3D printing extravascular stent implantation on the hemodynamics of the relevant large vessels in patients with nutcracker syndrome(NCS),and to discuss the clinical safety of this new procedure.Methods:A total of 30 NCS patients admitted to Tangdu Hospital Affiliated to Air Force Military Medical University from May to December 2023 were prospectively included. All the patients were received laparoscopic 3D printing extravascular stent implantation for NCS treatment. Whether the lumbago,abdominal pain,hematuria,proteinuria and varicocele had improved after the stent implantation were observed. The inner diameter,blood flow velocity of left renal vein,abdominal aorta,superior mesenteric artery and the diameter of inferior vena cava were measured by ultrasound 1 day before surgery and 8 days after surgery,respectively.In addition,the carotid-femoral pulse wave velocity(cfPWV)was measured by a newly developed method,by which the arterial stiffness could be detected based on Doppler ultrasound. The blood flow Doppler spectra of each subject were recorded at the right common carotid artery and the right common femoral artery,respectively,then based on that,the cfPWV was automatically calculated by this new technique. The above internal diameters,blood flow velocity and cfPWV were compared before and after the laparoscopic 3D printing extravascular stent implantation.Results:Among the 30 patients,the postoperative blood flow velocity at the left renal vein compression site was significantly lower than that before surgery[(50.7 ± 14.8)cm/s vs(122.1 ± 24.1)cm/s, P<0.001)],and the clinical symptoms,including lumbago and abdominal pain,hematuria,proteinuria and varicocele were significantly improved(all P<0.05). There were no significant changes in the internal diameter,blood flow velocity of abdominal aorta,superior mesenteric artery and the diameter of inferior vena cava,and cfPWV before and after operation(all P>0.05). Conclusions:The 3D printing extravascular stent implantation through laparoscope can effectively improve left renal vein compression in patients with NCS,and cause no significant change in large arterial hemodynamics,suggesting that this surgical method is a safe and reliable treatment for patients with NCS.
5.A comparative study of the outcomes of primary reverse total shoulder arthroplasty and revision procedure after treatment failure of complex proximal humerus fractures in elderly patients
Bingshan YAN ; Ming XIANG ; Lei HAN ; Junyang LIU ; Bo ZHANG ; Xu TIAN ; Lintao LIU ; Jingming DONG
Chinese Journal of Orthopaedics 2025;45(15):984-992
Objective:To evaluate the clinical outcomesof primary reverse total shoulder arthroplasty (RTSA) and revision procedure with RTSA after treatment failure of complex proximal humeral fractures in the elderly.Methods:A retrospective analysis was conductedon 24 elderly patients with Neer three- or four-part proximal humeral fractures who underwent RTSA revision after treatment failure (RTSA revision group) from January 2017 to June 2022. There were 7 males and 17 females included, with a mean age of 78.23±5.78 years (range, 67-86 years). Forty-eight patients who underwent primary RTSA (primary RTSA group) during the same time period were selected by propensity score matchingin a 1∶2 ratio as controls, based on age, dominanthand, etiology, Neer typing, glenohumeral joint dislocation, rotator cuff integrity, and osteoporosis T-score. The primary RTSA group included 12 males and 36 females, with a mean age of 76.38±6.15 years (range, 65-87 years). Clinical indicators including demographic characteristics, healing rate of the greater tuberosity, visual analogue score (VAS), Constant-Murley score, American Shoulder and Elbow Surgeons (ASES), shoulder range of motion (ROM), patient satisfaction, and complication rate were collected and analyzed.Results:The mean follow-up duration was 40(32, 60) months (range, 25-72 months) in the primary RTSA group and 38(30, 61) months (range, 24-68 months) in RTSA revision group. There was no significant difference (χ 2=5.058, P=0.168) in the healing rate of the greater tuberosity between the primary RTSA group (41/48, 85.4%) and the RTSA revision group (15/24, 62.5%). Compared with preoperative status, the ROM of anterior elevation, abduction supination, external rotation, VAS score, Constant-Murley score, and ASES score were significantly improved at the last follow-up (all P<0.05) in the RTSA revision group. The anterior elevation (123.74°± 16.57°), abduction supination (113.73°±16.42°), and external rotation (36.45°±10.36°) in the primary RTSA group were superior to those in the RTSA revision group (109.43°±18.75°, 98.64°±15.47°, 30.47°±10.64°, respectively), the difference was statistically significant ( P<0.05). No statistical difference of ROM of internal rotation between the two groups was found (χ 2=4.034, P=0.133). At the last follow-up, the Constant-Murley scores (75.47±11.66) and ASES scores (73.58±15.72) of the primary RTSA group were higher than those in the RTSA revision group (60.43±10.24 and 63.28±18.77, respectively), and the differences were statistically significant ( P<0.05). In terms of VAS (1.66±0.93 vs. 2.02±1.15) and patient satisfaction [83%(40/48) vs. 88%(21/24)], no statistical difference was identified ( P>0.05). The complication rate were 10.4% (5/48) in the primary RTSA group and 20.8% (5/24) in the RTSA revision group (χ 2=1.452, P=0.285), with no serious complications requiring revision surgery in either group. Conclusions:For elderly patients with proximal humeral fractures after failed operation, RTSA revision might effectively improve the limb function and alleviatepain. However, compared with RTSA revision, primary RTSA demonstrated superiorearly clinical outcomes in shoulder ROM and functional recovery.
6.18F-FDG PET/CT in Predicting WHO(2021)Histological Grades of Invasive Pulmonary Adenocarcinoma
Qin SHI ; Yifan ZHANG ; Yi YANG ; Bo PAN ; Ming NI
Chinese Journal of Medical Imaging 2025;33(2):171-176,178
Purpose To investigate the role of 18F-FDG PET/CT in predicting histological grade of invasive pulmonary adenocarcinoma in the WHO(2021)classification.Materials and Methods The Clinical,pathological and PET/CT data of 255 patients with invasive pulmonary adenocarcinoma confirmed by surgical pathology were retrospectively analyzed from May 2015 to August 2023.Tertiary tumor grading was performed according to the WHO(2021)classification.The clinicopathologic features,maximum standardized uptake value(SUVmax),maximum standardized uptake,total lesion glycolysis and CT imaging findings were compared among the three tumor grades.Logistic regression analysis was used to screen the independent predictors for grade 3 tumors,and performance evaluation was performed using receiver operating characteristic curve.Results Higher tumor grade was associated with male sex(χ2=11.803,P=0.003),smoking history(χ2=7.702,P=0.021),maximum tumor diameter(H=20.548,P=0.002),lymph node metastasis(P<0.001),vascular cancer thrombus(χ2=33.270,P<0.001),pleural invasion(χ2=15.116,P=0.001)and airway spread(χ2=17.867,P<0.001).SUVmax(H=71.488,P<0.001),total lesion glycolysis(H=30.658,P<0.001)and the proportion of pure solid tumors on CT image(χ2=28.872,P<0.001)all increased significantly with higher tumor grade.A higher SUVmax(OR=1.234,95%CI 1.141-1.334,P<0.001)and pure solid appearance(OR=2.205,95%CI 1.166-4.171,P=0.015)were independent predictors of grade 3 tumors.The area under the receiver operating characteristic curve for SUVmax,CT solid appearance and the combination for predicting grade 3 tumors was 0.793,0.641 and 0.804,respectively,with the SUVmax cut-off of 6.08.Conclusion SUVmax and CT solid appearance are independent predictive factors for grade 3 invasive pulmonary adenocarcinoma.Preoperative 18F-FDG PET/CT can assist in evaluating the grading of invasive pulmonary adenocarcinoma,which improves treatment decision-making.
7.Mechanism of electroacupuncture at"Qihai","Zhongji"and"Guanyuan"acupoints in inhibiting ferroptosis of urethral sphincter in rats with stress urinary incontinence
Bo MA ; Mengzhuo ZHANG ; Qi HE ; Heng XIN ; Ming YANG ; Hesong YE
Chinese Journal of Pathophysiology 2025;41(11):2229-2236
AIM:To investigate the effects of electroacupuncture(EA)at"Qihai","Zhongji"and"Guanyuan"acupoints on urinary control function in rats with stress urinary incontinence(SUI)as well as to explore the mechanism of regulating ferroptosis.METHODS:A total of 50 Sprague-Dawley(SD)rats were randomly assigned to 5 groups.The rats in control(Con)group did not receive any treatment.The rats in model group was modeled for bilateral oophorectomy and vaginal dilation.The rats in EA group received EA treatment at"Qihai","Zhongji"and"Guanyuan"acupoints after modeling,while those in sham acupuncture(sham)group received EA treatment beside the specified acupoints after modeling.The rats in EA+solute carrier family 7 member 11(SLC7A11)inhibitor imidazole ketone erastin(IKE)group received an intraperitoneal injection of 50 mg/kg IKE and EA intervention after modeling.After the experiment,the uri-nary control indicators of leak point pressure(LPP),abdominal LPP(ALPP),and maximum bladder capacity(MBC)were measured for all rats.Hematoxylin-eosin(HE),Masson and Prussian blue staining was performed to observe the pathological changes and iron deposition in the urethral sphincter muscle.Enzyme-linked immunosorbent assay(ELISA)was performed to detect the mitochondrial functional indicators(mitochondrial membrane potential and ATP)and redox in-dicators:changes in the levels of reactive oxygen species(ROS),malondialdehyde(MDA),and glutathione(GSH).RT-qPCR,Western blot and immunofluorescence staining were performed to detect the expression of key iron death proteins.RESULTS:When compared with the Con group,the main urinary control indicators of MBC,LPP,and ALPP in the model group were significantly reduced(P<0.05),and the urethral sphincter fibers were broken and disordered,iron de-position was significant,and the proportion of muscle fibers was significantly reduced.The mitochondrial function indica-tors and GSH levels were significantly reduced(P<0.05),while the ROS intensity,Fe2+and MDA levels were significant-ly increased(P<0.05),the glutathione peroxidase 4(GPX4)and SLC7A11 mRNA protein expressions were significantly reduced(P<0.05),and the acyl-CoA synthetase long-chain family member 4(ACSL4)and transferrin receptor 1(TFR1)protein expressions were significantly increased(P<0.05).When compared with the model group,the main urinary con-trol indicators of the rats in the EA group were significantly improved(P<0.05).The urethral sphincter fibers breakage and disordered were attenuated,iron deposition was significantly reduced,and the proportion of muscle fibers was signifi-cantly increased.The mitochondrial function indicators and GSH levels were significantly increased(P<0.05),while the ROS intensity,Fe2+and MDA levels were significantly reduced(P<0.05).The mRNA and protein expressions of GPX4 and SLC7A11 were significantly increased(P<0.05),and the mRNA and protein expressions of ACSL4 and TFR1 were significantly reduced(P<0.05).When compared with the EA group,the above indicators in the EA+IKE group showed negative changes,and the difference was statistically significant(P<0.05).CONCLUSION:Treatment with EA at"Qi-hai","Zhongji"and"Guanyuan"acupoints improves urinary function in SUI,and the underlying mechanism may be relat-ed to ferroptosis mediated by the SLC7A11/GPX4 signaling pathway.
8.Electrophysiological Signatures of Visual Sensations Elicited by Direct Electrical Stimulation.
Yan-Yan LI ; Bo ZHANG ; Jing WANG ; Yuri B SAALMANN ; Mohsen AFRASIABI ; Peng-Cheng LV ; Hai-Xiang WANG ; Huan-Huan XIANG ; Meng-Yang WANG ; Guo-Ming LUAN ; Robert T KNIGHT ; Liang WANG
Neuroscience Bulletin 2025;41(9):1617-1629
Direct electrical stimulation of the human cortex can produce subjective visual sensations, yet these sensations are unstable. The underlying mechanisms may stem from differences in electrophysiological activity within the distributed network outside the stimulated site. To address this problem, we recruited 69 patients who experienced visual sensations during invasive electrical stimulation while intracranial electroencephalography (iEEG) data were recorded. We found significantly flattened power spectral slopes in distributed regions involving different brain networks and decreased integrated information during elicited visual sensations compared with the non-sensation condition. Further analysis based on minimum information partitions revealed that the reconfigured network interactions primarily involved the inferior frontal cortex, posterior superior temporal sulcus, and temporoparietal junction. The flattened power spectral slope in the inferior frontal gyrus was also correlated with integrated information. Taken together, this study indicates that the altered electrophysiological signatures provide insights into the neural mechanisms underlying subjective visual sensations.
Humans
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Male
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Female
;
Adult
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Visual Perception/physiology*
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Electric Stimulation
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Middle Aged
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Young Adult
;
Electrocorticography
;
Electroencephalography
;
Brain Mapping
9.Specific effect of inserted sham acupuncture and its impact on the estimation of acupuncture treatment effect in randomized controlled trials: A systematic survey.
Xiao-Chao LUO ; Jia-Li LIU ; Ming-Hong YAO ; Ye-Meng CHEN ; Arthur Yin FAN ; Fan-Rong LIANG ; Ji-Ping ZHAO ; Ling ZHAO ; Xu ZHOU ; Xiao-Ying ZHONG ; Jia-Hui YANG ; Bo LI ; Ying ZHANG ; Xin SUN ; Ling LI
Journal of Integrative Medicine 2025;23(6):630-640
BACKGROUND:
The use of inserted sham acupuncture as a placebo in randomized controlled trials (RCTs) is controversial, because it may produce specific effects that cause an underestimation of the effect of acupuncture treatment.
OBJECTIVE:
This systematic survey investigates the magnitude of insert-specific effects of sham acupuncture and whether they affect the estimation of acupuncture treatment effects.
SEARCH STRATEGY:
PubMed, Embase and Cochrane Central Register of Controlled Trials were searched to identify acupuncture RCTs from their inception until December 2022.
INCLUSION CRITERIA:
RCTs that evaluated the effects of acupuncture compared to sham acupuncture and no treatment.
DATA EXTRACTION AND ANALYSIS:
The total effect measured for an acupuncture treatment group in RCTs were divided into three components, including the natural history and/or regression to the mean effect (controlled for no-treatment group), the placebo effect, and the specific effect of acupuncture. The first two constituted the contextual effect of acupuncture, which is mimicked by a sham acupuncture treatment group. The proportion of acupuncture total effect size was considered to be 1. The proportion of natural history and/or regression to the mean effect (PNE) and proportional contextual effect (PCE) of included RCTs were pooled using meta-analyses with a random-effect model. The proportion of acupuncture placebo effect was the difference between PCE and PNE in RCTs with non-inserted sham acupuncture. The proportion of insert-specific effect of sham acupuncture (PIES) was obtained by subtracting the proportion of acupuncture placebo effect and PNE from PCE in RCTs with inserted sham acupuncture. The impact of PIES on the estimation of acupuncture's treatment effect was evaluated by quantifying the percentage of RCTs that the effect of outcome changed from no statistical difference to statistical difference after removing PIES in the included studies, and the impact of PIES was externally validated in other acupuncture RCTs with an inserted sham acupuncture group that were not used to calculate PIES.
RESULTS:
This analysis included 32 studies with 5492 patients. The overall PNE was 0.335 (95% confidence interval [CI], 0.255-0.415) and the PCE of acupuncture was 0.639 (95% CI, 0.567-0.710) of acupuncture's total effect. The proportional contribution of the placebo effect to acupuncture's total effect was 0.191, and the PIES was 0.189. When we modeled the exclusion of the insert-specific effect of sham acupuncture, the acupuncture treatment effect changed from no difference to a significant difference in 45.45% of the included RCTs, and in 40.91% of the external validated RCTs.
CONCLUSION
The insert-specific effect of sham acupuncture in RCTs represents 18.90% of acupuncture's total effect and significantly affects the evaluation of the acupuncture treatment effect. More than 40% of RCTs that used inserted sham acupuncture would draw different conclusions if the PIES had been controlled for. Considering the impact of the insert-specific effect of sham acupuncture, caution should be taken when using inserted sham acupuncture placebos in RCTs. Please cite this article as: Luo XC, Liu JL, Yao MH, Chen YM, Fan AY, Liang FR, Zhao JP, Zhao L, Zhou X, Zhong XY, Yang JH, Li B, Zhang Y, Sun X, Li L. Specific effect of inserted sham acupuncture and its impact on the estimation of acupuncture treatment effect in randomized controlled trials: A systematic survey. J Integr Med. 2025; 23(6):630-640.
Acupuncture Therapy/methods*
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Humans
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Randomized Controlled Trials as Topic
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Placebo Effect
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Placebos
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Treatment Outcome
10.Amoenucles A-F, novel nucleoside derivatives with TNF-α inhibitory activities from Aspergillus amoenus TJ507.
Yeting ZHANG ; Zhengyi SHI ; Chunhua ZHAO ; Lanqin LI ; Ming CHEN ; Yunfang CAO ; Fengqing WANG ; Bo TAO ; Xinye HUANG ; Jieru GUO ; Changxing QI ; Weiguang SUN ; Yonghui ZHANG
Chinese Journal of Natural Medicines (English Ed.) 2025;23(1):111-118
Amoenucles A-F (1-6), six previously undescribed nucleoside derivatives, and two known analogs (7 and 8) were isolated from the culture of Aspergillus amoenus TJ507. Their structures were elucidated through spectroscopic analysis, single-crystal X-ray crystallography, and chemical reactions. Notably, 3 and 4 represent the first reported instances of nucleosides with an attached pyrrole moiety. Of particular significance, the absolute configuration of the sugar moiety of 1-4 was determined using nuclear magnetic resonance (NMR), electric circular dichroism (ECD) calculations, and a hydrolysis reaction, presenting a potentially valuable method for confirming nucleoside structures. Furthermore, 1, 2, and 5-8 exhibited potential tumor necrosis factor α (TNF-α) inhibitory activities, which may provide a novel chemical template for the development of agents targeting autoimmune and inflammatory diseases.
Aspergillus/chemistry*
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Tumor Necrosis Factor-alpha/antagonists & inhibitors*
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Molecular Structure
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Nucleosides/isolation & purification*
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Crystallography, X-Ray
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Animals
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Humans
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Mice
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Magnetic Resonance Spectroscopy

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