1.Correlations of multimodal ultrasound manifestations of Hashimoto thyroiditis with normal thyroid function and serum TPOAb titer
Qiqi WANG ; Wuping ZHANG ; Zhiguo DING ; Xin'ai LI ; Yan YANG ; Zhaoxin WANG
Chinese Journal of Medical Imaging Technology 2025;41(6):899-902
Objective To explore the correlations of multimodal ultrasound manifestations of Hashimoto thyroiditis(HT)with normal thyroid function and serum thyroid peroxidase antibody(TPOAb)titer.Methods Data of gray-scale ultrasound,CDFI and shear wave elastography(SWE)of 100 HT patients with normal thyroid function were retrospectively analyzed.According to gray-scale ultrasound manifestations,HT was classified into focal type(type A),nodular-like type(type B),diffuse hypoechoic type(type C)and diffuse hyperechoic type(type D).Meanwhile,based on blood flow distribution shown on CDFI,HT was classified into abundant type,increased type,normal type and sparse type.Correlations of the mean Young's modulus(Emean)of thyroid gland and CDFI classification of HT with serum TPOAb titer were analyzed.Results For all 100 cases,serum TPOAb titer was(270.31±72.63)IU/ml.There were 38 cases of type A,26 cases of type B,20 cases of type C and 16 cases of type D based on gray-scale ultrasound,and 15 cases of abundant type,9 cases of increased type,69 cases of normal type and 7 cases of sparse type based on CDFI,respectively.The Emean of thyroid in all 100 cases was(22.31±7.38)kPa.Significant differences of serum TPOAb titer and thyroid Emean were found among different gray-scale ultrasound HT types(all P<0.05).Thyroid Emean values of all 100 patients were positively correlated with TPOAb titer(rs=0.702,P=0.037).The thyroid Emean of patients with type A,B,C and D HT were positively correlated with TPOAb titer(rs=0.752,0.823,0.853,0.497,all P<0.05),while the CDFI types of HT were negative correlated with serum TPOAb titer(rs=-0.746,P=0.035).Conclusion Both thyroid Emean and blood flow signals in HT patients with normal thyroid function were correlated with serum TPOAb titer.
2.Clinical Value of Cardiac Magnetic Resonance Feature-tracking Strain Analysis in Risk Stratification of Diabetic Heart Failure With Preserved Ejection Fraction
Wenjing YANG ; Leyi ZHU ; Weichun WU ; Huaying ZHANG ; Jing XU ; Di ZHOU ; Zhaoxin TIAN ; Mengdi JIANG ; Yining WANG ; Gang YIN ; Xinxiang ZHAO ; Shihua ZHAO ; Minjie LU
Chinese Circulation Journal 2025;40(3):246-253
Objectives:To investigate the clinical value of cardiac magnetic resonance imaging(CMR)feature-tracking strain analysis in risk stratification of diabetic heart failure with preserved ejection fraction(HFpEF).Methods:In this retrospective study,a total of 215 patients with diabetic HFpEF who underwent CMR at Chinese Academy of Medical Sciences Fuwai Hospital from January 2012 to December 2018 were included.Myocardial strain parameters were calculated using CMR feature-tracking technology.Patients were followed up by medical records or telephone calls.Composite endpoint event,all-cause death or heart failure hospitalization during follow-up were recorded.Patients were divided into event group and event-free group.Univariable and multivariable Cox proportional hazard regression analyses were performed to determine the risk factors for the outcomes in diabetic HFpEF.The effects of hypertension and obesity on the prognosis of diabetic HFpEF patients and whether they affect the prognostic value of CMR feature-tracking strain analysis were also analyzed.Results:During a follow-up of(7.1±1.8)years,93(43.3%)patients had endpoint events(event group),including 28 all-cause deaths and 65 heart failure hospitalization.Compared with the event-free group(n=122),patients in the event group had significantly lower left ventricular ejection fraction,higher prevalence and extent of late gadolinium enhancement,and significantly reduced global longitudinal strain(GLS),global circumferential strain,global radial strain,and global systolic longitudinal strain rate(all P<0.05).The absolute GLS value was significantly lower in event group than in event-free group,regardless of the presence of hypertension and obesity.Multivariate Cox regression analysis showed that estimated glomerular filtration rate(HR=0.983,95%CI:0.972-0.993,P=0.001),left atrial volume index(HR=1.015,95%CI:1.005-1.026,P=0.004),and GLS(HR=1.142,95%CI:1.060-1.231,P<0.001)were independent risk factors for adverse cardiovascular events in diabetic HFpEF patients.However,adjusted N-terminal pro-brain natriuretic peptide was not an independent prognostic factor.The cut-offvalue of GLS to predict outcome was-14.09%from ROC curve analysis.The Kaplan-Meier curve showed that in patients with and without hypertension and obesity,patients with the GLS>-14.09%had lower event-free survival compared to patients with GLS≤-14.09%(all P<0.05),and the ability of GLS to predict adverse outcomes was not affected by hypertension and obesity.Conclusions:GLS obtained by CMR feature-tracking strain analysis is an independent predictor of adverse outcomes in diabetic HFpEF,and its ability to predict adverse outcomes is independent of hypertension and obesity.
3.Prevalence and association of hypomineralized second molars and deciduous teeth caries in 6-7 years children from Kaifeng, China
Yang LU ; Jingya GUO ; Chunlin LIU ; Zhaoxin ZHANG ; Mingzhen YANG ; Yimeng ZHANG ; Yanfang REN ; Jie JIA
Chinese Journal of Stomatology 2025;60(11):1240-1246
Objective:To investigate the incidence of hypomineralized second primary molars (HSPM) and deciduous teeth caries in school-aged children of Kaifeng City, and to discuss the association between HSPM and deciduous teeth caries, providing scientific guidance for clinical prevention and treatment.Methods:A cross-sectional study was carried out on first-grade children aged 6-7 years in five primary schools chosen from the eastern, western, southern, northern, and central areas of Kaifeng City by cluster random sampling method. The European Academy of Pediatric Dentistry criteria was used for scoring HSPM. The International Caries Detection and Assessment System (ICDAS-Ⅱ) was used to evaluate caries status.Results:This cross-sectional study was with a sample of 913 children. The prevalence of HSPM was 8.76% (80/913), with 39 boys and 41 girls, the most common type of which was atypical caries [35.00% (28/80)]. Regarding the distribution of HSPM, the incidence in maxilla [6.13% (56/913)] showed no statistically significant difference with that in the mandible [5.70% (52/913)] (χ2=0.16, P=0.692). In terms of severity, 56 cases were severe and 24 cases were mild. The association between HSPM and deciduous teeth caries was analyzed. The results showed that 56 had caries on their second primary molars among the 80 HSPM children. Children with HSPM had an increased risk of second deciduous molar decay compared to non-HSPM children ( OR=1.94, 95 %CI: 1.18-3.19, P<0.05); meanwhile, the deciduous teeth of HSPM children were more prone to suffer caries than those of non-HSPM children ( OR=2.33, 95 %CI: 1.26-4.29, P<0.05). Conclusions:The HSPM prevalence in school-aged children of Kaifeng City was 8.76%. Child with HSPM was more likely to have deciduous teeth caries than non-HSPM child. Special attention should be paid to children with HSPM after the eruption of affected molars.
4.Relationship of vertebrobasilar dolichoectasia and three vascular endothelial injury factors to white matter hyperintensity and lacunar infarction in patients with cerebral small vessel disease
Xi LI ; Zhaoxin WU ; Daopei ZHANG ; Yonghui ZHANG ; Huailiang ZHANG
Chinese Journal of Cerebrovascular Diseases 2025;22(3):188-198
Objective To investigate whether vertebrobasilar dolichoectasia(VBD)and three vascular endothelial injury factors correlate with white matter hyperintensity(WMH)and lacunar infarction(LI)in patients with cerebral small vessel disease(CSVD).Methods Patients with CSVD hospitalized at the Brain Disease Center of the First Affiliated Hospital of Henan University of Chinese Medicine from March 2023 to March 2024 were prospectively and consecutively included in this study.Baseline clinical data,including gender,age,body mass index,hypertension,diabetes mellitus,coronary artery disease,atrial fibrillation,hyperlipidemia,hyperhomocysteinemia,hyperuricemia,carotid plaque,history of previous stroke,smoking,alcohol consumption,and other vascular risk factors.The patients were categorized into CSVD with VBD group and CSVD without VBD group.Imaging assessments were performed within 24 h of enrollment,including evaluating the WMH severity using Fazekas scale score(mild WMH:1-2,moderate WMH:3-4,severe WMH:5-6),imaging characteristics of LI and vertebrobasilar artery parameters on three dimensional time of flight magnetic resonance angiography images(including bilateral vertebral artery diameters,basilar artery diameters,standard basilar artery length[BAL],and bending length of the basilar artery).A basilar artery diameter ≥4.5 mm or vertebral artery diameter ≥4.0 mm was defined as dilatation.BAL ≥29.5 mm was defined as elongation,and a basilar artery bending length ≥ 10.0 mm was defined as curvature.Patients meeting at least one of these criteria(dilatation,elongation,and curvature)were included in the CSVD with VBD group.Levels of interleukin-6(IL-6),soluble intercellular adhesion molecule-1(sICAM-1),and von Willebrand factor(vWF)levels were measured on the second day of enrollment.To analyze the influencing factors of VBD in CSVD patients and examine the correlation between vertebrobasilar artery imaging parameters,the levels of three vascular endothelial injury factors(IL-6,sICAM-1,vWF),and the severities of WMH and LI in patients with CSVD.Results A total of 88 patients with CSVD,aged 40-80 years,with a mean age of(64±10)years,were included in this study,with 50patients in the CSVD with VBD group and 38patients in the CSVD without VBD group.(1)Univariate analysis showed no statistically significant differences in clinical baseline data or the three endothelial injury factor levels between the two groups(all P>0.05).After adjusting for age and gender,variables with P<0.1 in the univariate analysis(male,smoking history)were further examined using multivariate Logistic regression analysis,which showed that neither male gender(OR,2.656,95%CI 0.647-10.907,P=0.175)nor smoking history(OR,0.992,95%CI 0.255-3.866,P=0.991)significantly increased the risk of VBD in CSVD patients.(2)There were no statistically significant differences in bilateral vertebral artery diameters or BAL among different severity of WMH or between patients with or without LI(all P>0.05).The basilar artery bending length was significantly smaller in patients with mild and moderate WMH CSVD than those with severe WMH CSVD(2.49[1.60,4.58]mm,5.24[2.28,6.02]mm,6.99[5.19,8.93]mm,respectively;both P<0.05).(3)Univariate analysis showed that IL-6,sICAM-1,and vWF levels were significantly higher in patients with moderate and severe WMH CSVD compared to patients with mild WMH CSVD(all P<0.05).IL-6 and sICAM-1 levels were significantly higher in patients with severe WMH CSVD compared to patients with moderate WMH CSVD(both P<0.05).The levels of IL-6,sICAM-1,and vWF were significantly higher in CSVD patients with LI than those in CSVD patients without LI(all P<0.05).(4)After adjusting for confounders such as gender,age,and smoking history,the multifactorial Logistic ordered regression analysis,using patients with mild WMH CSVD as the reference indicated that high IL-6(OR,2.358,95%CI 1.268-4.387,P=0.007),sICAM-1(OR,2.077,95%CI 1.430-3.016,P<0.01),and vWF(OR,1.437,95%CI 1.058-1.951,P=0.020)levels were significant risk factors for the occurrence of moderate WMH in patients with CSVD,as well as significant risk factors for severe WMH in patients with CSVD(IL-6[OR,5.340,95%CI 2.555-11.163,P<0.01],sICAM-1[OR,16.004,95%CI3.692-69.379,P<0.01],and vWF[OR,1.748,95%CI 1.267-2.412,P=0.001]);a long basilar artery bending length was an risk factor for the development of moderate(OR,1.287,95%CI 1.032-1.603,P=0.025)and severe(OR,1.639,95%CI 1.280-2.099,P<0.01)WMH in CSVD patients.(5)After adjusting for confounding factors such as gender,age,and smoking history,multifactorial Logistic ordered regression analysis identified that high IL-6(OR,1.536,95%CI 1.074-2.198,P=0.019),sICAM-1(OR,2.066,95%CI 1.465-2.913,P<0.01),vWF(OR,1.423,95%CI 1.078-1.879,P=0.013)levels are significant influential factors for the development of LI in CSVD patients.Conclusions Longer basilar artery bending length was associated with more severe WMH in patients with CSVD.Elevated levels of IL-6,sICAM-1,and vWF were associated with development of LI and more severe WMH in patients with CSVD.
5.Expert recommendations for diagnosis and treatment routes of severe infections in elderly people based on immune function evaluation
Lina ZHANG ; Chunhui LI ; Zhihong ZUO ; Zhanwen WANG ; Fulai YUAN ; Chuan-chang LI ; Qiong CHEN ; Wei LIU ; Anhua WU ; Zhaoxin QIAN
Chinese Journal of Infection Control 2025;24(8):1027-1032
The aging trend is intensifying currently,but there is still a lack of standardized diagnosis and treat-ment schemes for severe infections in elderly people.This paper focuses on the recommendations for immune-related clinical diagnosis and treatment routes as well as the idea of risk stratified diagnosis and treatment for elderly peo-ple,aiming to effectively prevent infectious diseases in elderly people and perform stratified management through systematic and scientific means of immune function monitoring and regulation,so as to enhance the standardized level of diagnosis and treatment as well as clinical treatment effect of infection in elderly people.
6.Prediction of gastric cancer T staging using oral contrast-enhanced ultrasonography combined with contrast-enhanced CT
Aiqing LU ; Fei QIU ; Xin DONG ; Xiaoyan LI ; Xiuyun SUN ; Xuefeng LI ; Zhaoxin JIN ; Xiankai WANG ; Yong ZHANG
Chinese Journal of Radiological Health 2025;34(3):368-372
Objective To explore the value of oral contrast-enhanced ultrasonography (OCEUS) combined with contrast-enhanced CT in predicting preoperative T staging in patients with gastric cancer. Methods A retrospective analysis was conducted on 80 patients with gastric cancer confirmed via endoscopic biopsy or postoperative pathology at the First People’s Hospital of Jining from January 2021 to November 2024. The cohort included 56 males and 24 females, aged 38-79 years, with a median age of 55.9 years. All patients underwent both OCEUS and contrast-enhanced CT within one week prior to surgery. T staging of gastric cancer was determined using OCEUS, contrast-enhanced CT, or their combination. The results were compared with pathological T staging, and statistical differences in accuracy were analyzed. Results Pathological T staging identified T1 in 9 cases, T2 in 16 cases, T3 in 42 cases, and T4 in 13 cases. OCEUS indicated T1 in 6 cases, T2 in 14 cases, T3 in 50 cases, and T4 in 10 cases, with an accuracy rate of 80.0%. Contrast-enhanced CT indicated T1 in 4 cases, T2 in 12 cases, T3 in 52 cases, and T4 in 12 cases, with an accuracy rate of 75.0%. The combination of OCEUS and contrast-enhanced CT indicated T1 in 6 cases, T2 in 15 cases, T3 in 47 cases, and T4 in 12 cases, with an accuracy rate of 87.5%. The combined approach demonstrated significantly higher accuracy in preoperative T staging compared to either method alone (P < 0.05). Conclusion The combination of OCEUS and contrast-enhanced CT improves the accuracy of preoperative T staging in gastric cancer patients, providing valuable support for their diagnosis and treatment.
7.Empirical study of the effects of a general-specialty hierarchical management mode for chronic heart failure: a randomised controlled trial
Huimin DAI ; Lan TANG ; Jun BU ; Jun MA ; Meng JIANG ; Jianwei SHI ; Zhaoxin WANG ; Min ZHU ; Shengbing ZHANG
Chinese Journal of General Practitioners 2025;24(3):263-269
Objective:To explore and demonstrate the effect of general-specialty hierarchical management mode for chronic heart failure (CHF) in community.Methods:This was a single-blind, randomized, controlled study. A total of 530 CHF inpatients who attended Weifang Community Health Service Center (WCHSC) in Pudong New Area from February 2018 to September 2019 were consecutively enrolled. A random number table method was used to divide the patients into the management group ( n=265) and control group ( n=265). The demographic data and past medical history were collected 1 day before enrolment (baseline), and patients were assessed for New York Heart Association (NYHA) cardiac function classification and tested for blood N-terminal B-type natriuretic peptide proteins (NT-proBNP) levels, while Doppler echocardiography was performed to obtain the relevant indexes. The management group used a comprehensive management mode, co-delivered by both WCHSC (offering primary care) and RHSJUSM (offering specialty care) at Renji-Weifang CHF Studio in WCHSC , using the jointly developed CHF hierarchical CHF diagnosis and treatment criteria and referral procedure under the condition of sharing drugs and laboratory test results for CHF. The control group received routine heart failure care. Intergroup comparisons were made on baseline data obtained before follow-up and on NT-proBNP , left ventricular ejection fraction (LVEF), NYHA functional class , re-hospitalization rate and mortality rate at the end of the 6-month follow-up. Results:A total of 506 cases completed the follow-up. There were 253 patients in the management group, aged (68.26±9.41) years, 117 males (46.2%); 253 were in the control group, aged (66.98±9.63) years, 115 males (45.5%). There were no statistically significant differences in age, sex, marital status, education level, and comorbidities between the two groups (all P>0.05). At baseline, the differences in LVEF and NT-proBNP between the two groups were not statistically significant (all P>0.05), and at 6 months of intervention, LVEF, and NT-proBNP had significantly improved in both groups (all P<0.05) . Moreover, LVEF was higher in the management group than in the control group, and NT-proBNP was lower than in the control group (both P<0.01). At baseline, there were 166 cases (65.6%) in the control group with NYHA class Ⅲ/Ⅳ, and 145 cases (57.3%) in the comprehensive management group. There was no statistically significant difference between the two groups ( P>0.05). At 6 months of intervention, the percentage of NYHA class Ⅲ/Ⅳ patients in the comprehensive management group was lower than at baseline ( P<0.01),while that in the control group was higher than at baseline ( P<0.01), and the comprehensive management group was lower than that in the control group ( P<0.01). During the follow-up period, the rehospitalization rate for CHF in the management group was 13.83%(35/253), which was lower than that in the control group, which was 26.88%(68/253) ( P<0.001). Conclusion:The comprehensive management mode of CHF in the community through collaboration between general and specialized departments can significantly improve the management effect, suggesting that this mode is effective and can be promoted.
8.Prevalence and association of hypomineralized second molars and deciduous teeth caries in 6-7 years children from Kaifeng, China
Yang LU ; Jingya GUO ; Chunlin LIU ; Zhaoxin ZHANG ; Mingzhen YANG ; Yimeng ZHANG ; Yanfang REN ; Jie JIA
Chinese Journal of Stomatology 2025;60(11):1240-1246
Objective:To investigate the incidence of hypomineralized second primary molars (HSPM) and deciduous teeth caries in school-aged children of Kaifeng City, and to discuss the association between HSPM and deciduous teeth caries, providing scientific guidance for clinical prevention and treatment.Methods:A cross-sectional study was carried out on first-grade children aged 6-7 years in five primary schools chosen from the eastern, western, southern, northern, and central areas of Kaifeng City by cluster random sampling method. The European Academy of Pediatric Dentistry criteria was used for scoring HSPM. The International Caries Detection and Assessment System (ICDAS-Ⅱ) was used to evaluate caries status.Results:This cross-sectional study was with a sample of 913 children. The prevalence of HSPM was 8.76% (80/913), with 39 boys and 41 girls, the most common type of which was atypical caries [35.00% (28/80)]. Regarding the distribution of HSPM, the incidence in maxilla [6.13% (56/913)] showed no statistically significant difference with that in the mandible [5.70% (52/913)] (χ2=0.16, P=0.692). In terms of severity, 56 cases were severe and 24 cases were mild. The association between HSPM and deciduous teeth caries was analyzed. The results showed that 56 had caries on their second primary molars among the 80 HSPM children. Children with HSPM had an increased risk of second deciduous molar decay compared to non-HSPM children ( OR=1.94, 95 %CI: 1.18-3.19, P<0.05); meanwhile, the deciduous teeth of HSPM children were more prone to suffer caries than those of non-HSPM children ( OR=2.33, 95 %CI: 1.26-4.29, P<0.05). Conclusions:The HSPM prevalence in school-aged children of Kaifeng City was 8.76%. Child with HSPM was more likely to have deciduous teeth caries than non-HSPM child. Special attention should be paid to children with HSPM after the eruption of affected molars.
9.Clinical Value of Cardiac Magnetic Resonance Feature-tracking Strain Analysis in Risk Stratification of Diabetic Heart Failure With Preserved Ejection Fraction
Wenjing YANG ; Leyi ZHU ; Weichun WU ; Huaying ZHANG ; Jing XU ; Di ZHOU ; Zhaoxin TIAN ; Mengdi JIANG ; Yining WANG ; Gang YIN ; Xinxiang ZHAO ; Shihua ZHAO ; Minjie LU
Chinese Circulation Journal 2025;40(3):246-253
Objectives:To investigate the clinical value of cardiac magnetic resonance imaging(CMR)feature-tracking strain analysis in risk stratification of diabetic heart failure with preserved ejection fraction(HFpEF).Methods:In this retrospective study,a total of 215 patients with diabetic HFpEF who underwent CMR at Chinese Academy of Medical Sciences Fuwai Hospital from January 2012 to December 2018 were included.Myocardial strain parameters were calculated using CMR feature-tracking technology.Patients were followed up by medical records or telephone calls.Composite endpoint event,all-cause death or heart failure hospitalization during follow-up were recorded.Patients were divided into event group and event-free group.Univariable and multivariable Cox proportional hazard regression analyses were performed to determine the risk factors for the outcomes in diabetic HFpEF.The effects of hypertension and obesity on the prognosis of diabetic HFpEF patients and whether they affect the prognostic value of CMR feature-tracking strain analysis were also analyzed.Results:During a follow-up of(7.1±1.8)years,93(43.3%)patients had endpoint events(event group),including 28 all-cause deaths and 65 heart failure hospitalization.Compared with the event-free group(n=122),patients in the event group had significantly lower left ventricular ejection fraction,higher prevalence and extent of late gadolinium enhancement,and significantly reduced global longitudinal strain(GLS),global circumferential strain,global radial strain,and global systolic longitudinal strain rate(all P<0.05).The absolute GLS value was significantly lower in event group than in event-free group,regardless of the presence of hypertension and obesity.Multivariate Cox regression analysis showed that estimated glomerular filtration rate(HR=0.983,95%CI:0.972-0.993,P=0.001),left atrial volume index(HR=1.015,95%CI:1.005-1.026,P=0.004),and GLS(HR=1.142,95%CI:1.060-1.231,P<0.001)were independent risk factors for adverse cardiovascular events in diabetic HFpEF patients.However,adjusted N-terminal pro-brain natriuretic peptide was not an independent prognostic factor.The cut-offvalue of GLS to predict outcome was-14.09%from ROC curve analysis.The Kaplan-Meier curve showed that in patients with and without hypertension and obesity,patients with the GLS>-14.09%had lower event-free survival compared to patients with GLS≤-14.09%(all P<0.05),and the ability of GLS to predict adverse outcomes was not affected by hypertension and obesity.Conclusions:GLS obtained by CMR feature-tracking strain analysis is an independent predictor of adverse outcomes in diabetic HFpEF,and its ability to predict adverse outcomes is independent of hypertension and obesity.
10.Thermal proteome profiling (TPP) reveals NAMPT as the anti-glioma target of phenanthroindolizidine alkaloid PF403.
Fangfei LI ; Zhaoxin ZHANG ; Qinyan SHI ; Rubing WANG ; Ming JI ; Xiaoguang CHEN ; Yong LI ; Yunbao LIU ; Shishan YU
Acta Pharmaceutica Sinica B 2025;15(4):2008-2023
Glioma is difficult to treat due to the unique tumor microenvironment and blood-brain barrier. (13aS)-3-Hydroxyl-6,7-dimethoxyphenanthro[9,10-b] indolizidine (PF403), a phenanthroindolizidine alkaloid, has been identified as a promising therapeutic agent for the treatment of glioma. However, the anti-glioma mechanism of PF403 in vivo has not been conclusively verified and must be further elucidated. Hence, a strategy without chemical modification was applied to identify the target of PF403. In this study, we identified nicotinamide phosphoribosyl transferase (NAMPT) as the target of PF403 by using thermal proteome profiling (TPP). Moreover, microscale thermophoresis (MST), surface plasmon resonance (SPR), and isothermal titration calorimetry (ITC) experiments confirmed that NAMPT exhibits good affinity for PF403. Direct and indirect enzyme activity assays revealed that PF403 inhibited the catalytic activity of NAMPT, leading to a decrease in the concentration of nicotinamide adenine dinucleotide (NAD+) in U87 cells. X-ray diffraction and amino acid spot mutation experiments revealed that PF403 primarily relies on the formation of pi-pi interactions with residue Tyr188 to maintain binding with NAMPT (PDB code 8Y55). After NAMPT was knocked down with lentivirus, PF403 lost or partially lost its antitumor activity at the cellular and animal levels. These findings suggest that PF403 exerts antitumor activity by directly targeting NAMPT.

Result Analysis
Print
Save
E-mail