1.Quality Evaluation of Zhuye Shigao Granules and Its Therapeutic Effect on Mice with Cold-dampness Pestilence Attacking Lung Syndrome
Haihong LI ; Jiaqi SHEN ; Liwen LIANG ; Ziqi YANG ; Yuting YANG ; Shuyun LIANG ; Zhiliang SUN ; Jiannan LI ; Guangzhi CAI ; Jiyu GONG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(15):182-190
ObjectiveTo establish a quality evaluation method for Zhuye Shigao granules(Zhuye Shigaotang) based on fingerprint and determination of index components, and to investigate the therapeutic effect of Zhuye Shigao granules on mice with cold-dampness pestilence attacking lung syndrome. MethodsThe fingerprint of Zhuye Shigao granules was established by high performance liquid chromatography(HPLC), and the methods for determination of total calcium, orientin, isoorientin, ginsenosides Rg1, Re and Rb1 and other 2 index components were established. Fifty ICR mice were randomly divided into the blank group, model group, Zhuye Shigao granules low, medium and high dose groups(9.3, 18.6, 37.2 g·kg-1·d-1), with 10 mice in each group. In addition to the blank group, the model mice with cold-dampness pestilence attacking lung syndrome was prepared by nasal drip of lipopolysaccharide combined with cold-dampness environment. Each administration group was given the corresponding liquid by gavage according to the dose, while the blank group and model group were given the same volume of normal saline by gavage. Then, the body temperature and organ index of mice in each group were measured, hematoxylin-eosin(HE) staining was used to investigate the lung tissue injury of mice in each group, and enzyme-linked immunosorbent assay(ELISA) was used to detect the changes of tumor necrosis factor-α(TNF-α), interleukin(IL)-lβ, IL-6, IL-10 levels in serum and lung tissue, as well as immunoglobulin(Ig)A and IgM levels in serum. ResultsThe fingerprint similarity of 10 batches of Zhuye Shigao granules was>0.950, and 20 common peaks were calibrated. Seven of them were identified, including peak 11(isoorientin), peak 12(orientin), peak 14(apioside liquiritin), peak 15(liquiritin), peak 17(apioside isoliquiritin), peak 19(isoliquiritin) and peak 20(liquiritigenin). The results of quantitative analysis showed that the content range of each index component in 10 batches of Zhuye Shigao granules was as follows:Total calcium of 9.978-11.294 mg·g-1, isoorientin of 0.033-0.041 mg·g-1, orientin of 0.046-0.055 mg·g-1, ginsenoside Rg1+ginsenoside Re of 0.748-0.762 mg·g-1, ginsenoside Rb1 of 0.151-0.197 mg·g-1, liquiritin of 1.106-1.366 mg·g-1, glycyrrhizic acid of 0.904-1.182 mg·g-1. Compared with the blank group, the body temperature of mice in the model group was significantly increased, the organ indexes of liver, lung and spleen were significantly decreased, the organ index of thymus was significantly increased, HE staining of lung tissue showed infiltration of inflammatory cells, a small amount of serous exudation was observed in the alveoli, and lung tissue was damaged. After the intervention of Zhuye Shigao granules, the pathological changes were improved compared with the model group. The expression levels of IL-1β, IL-6 and TNF-α were significantly increased, the expression level of IL-10 was significantly decreased in serum and lung tissue. The levels of IgA and IgM in serum were significantly decreased(P<0.01). Compared with the model group, the body temperature, the organ indexes and immune factor levels in serum and lung tissue of mice in the Zhuye Shigao granules medium and high dose groups were significantly reduced(P<0.05, P<0.01). ConclusionIn this study, the quality evaluation of Zhuye Shigao granules was carried out based on fingerprint combined with determination of index components, and the fingerprint of four herbs(Lophatheri Herba, Ophiopogonis Radix, Pinelliae Rhizoma and Glycyrrhizae Radix et Rhizoma) in this formula and the determination of 8 index components were established. The therapeutic effect of Zhuye Shigao granules on mice with cold-dampness pestilence attacking lung syndrome may be related to inhibiting inflammatory response and mediating immune regulation.
2.A survey and analysis of gastroenterologists awareness of treatment goals for inflammatory bowel disease in China
Zhilan YOU ; Liwen JIN ; Jun SHEN ; Zhihua RAN ; Xianbin CAI
Chinese Journal of Inflammatory Bowel Diseases 2025;09(3):228-232
Objective:To investigate the awareness of Chinese gastroenterologists regarding the treatment targets of inflammatory bowel disease (IBD) as defined by the STRIDE-Ⅱ consensus and to identify challenges encountered in clinical practice.Methods:A nationwide cross-sectional survey was conducted via an online questionnaire distributed to gastroenterologists between February 16 and March 31, 2024. The survey encompassed demographic data, recognition and adherence to the STRIDE-Ⅱ consensus, perceived importance of IBD treatment targets, and clinical challenges.Results:A total of 203 valid questionnaires were collected from 28 provinces (autonomous regions/municipalities). The majority of participants (177/203, 87.2%) reported routinely referencing the STRIDE-Ⅱ consensus in IBD management. Over 90% of physicians identified endoscopic mucosal healing as the core treatment target. Additionally, approximately 80% emphasized the importance of clinical remission, endoscopic remission, quality-of-life improvement, disability prevention, and normalization of growth in pediatric patients. The challenges reported by more than half of physicians in acheiving the goals of the treatment process included lack of a standardized definition for mucosal healing (69.5%), management of psychological comorbidities (89.2%), drug failure (74.4%), penetrating Crohn's disease (72.4%), perianal fistulizing Crohn's disease (65.0%), and IBD management during pregnancy (61.1%).Conclusions:Chinese gastroenterologists demonstrate high awareness and adherence to the STRIDE-Ⅱ consensus, prioritizing mucosal healing as the cornerstone of IBD management. However, numerous challenges remain in clinical practice, particularly regarding operational definitions of therapeutic endpoints and complex disease phenotypes.
3.Four-dimensional flow MRI evaluation of hemodynamic in transplant renal artery stenosis: a preliminary study
Liwen SHEN ; Zhaoyu XING ; Liang PAN ; Jie CHEN ; Songlin GUO ; Wei XING
Chinese Journal of Radiology 2025;59(3):286-292
Objective:To explore the value of four-dimensional flow (4D Flow) MRI in evaluating hemodynamic changes of transplant renal artery stenosis (TRAS).Methods:The study was a cross-sectional study. A retrospective analysis of 67 patients after renal transplantation was performed in Third Affiliated Hospital of Soochow University from January 2021 to October 2022. All patients were examined with non-contrast enhanced magnetic resonance angiography (NCE-MRA) and 4D Flow MRI. After NCE-MRA assessment, the patients were divided into a non stenosis group (39 cases), non-obvious stenosis group (stenosis degree<50%, 13 cases) and obvious stenosis group (stenosis degree≥50%, 15 cases). The 4D Flow MRI data were analyzed using the post-processing software CVI42 (Canada) to measure hemodynamic parameters of the transplanted renal artery in the non-stenosis group, as well as the proximal, central, and distal regions of the stenosis in the non-obvious stenosis group and obvious stenosis group. The parameters included net flow rate, maximum flow rate, average velocity, peak velocity, average wall shear stress, and maximum wall shear stress. One way analysis of variance and least significant difference (LSD) were used to test the differences of hemodynamic parameters among the three groups and between the proximal, central and distal regions of the stenosis. Pearson correlation coefficient was used to evaluate the correlation between hemodynamic parameters of transplant renal artery and estimated glomerular filtration rate (eGFR).Results:The net flow, maximum flow and average velocity at the proximal region of stenosis in the group with obvious stenosis of transplanted renal artery were significantly lower than those in the non-stenosis group and the non-obvious stenosis group (all P<0.05). The net flow and maximum flow at the distal region of stenosis in both obvious stenosis group and non-obvious stenosis group were lower than those in non-stenosis group, and the differences were statistically significant (both P<0.001). The mean velocity and peak velocity at the distal region of stenosis in the obvious stenosis group were higher than those in the non-stenosis group, and the differences were statistically significant (both P<0.05). The maximum and average wall shear stress at the distal region of stenosis in the obvious stenosis group were lower than those in the non-stenosis group and the non-obvious stenosis group, and the differences were statistically significant (both P<0.05). The net flow and maximum flow in the center region of stenosis were lower than those in the proximal region of stenosis, and the differences were statistically significant (both P<0.05). The peak velocity in the center region and distal region of stenosis was higher than those in the proximal region of stenosis, and the difference was statistically significant (both P<0.05). There was a positive correlation between the net flow and eGFR at the TRAS patients proximal, center, and distal stenosis ( r=0.270, 0.260, 0.320, respectively, P=0.044, 0.041, 0.036, respectively). There was a positive correlation between the maximum flow and eGFR at the TRAS patients proximal, center, and distal stenosis ( r=0.306, 0.276, 0.269, respectively, P=0.037, 0.041, 0.043, respectively). Conclusion:After TRAS, there is a significant change in blood flow status. The 4D Flow MRI can provide quantitative hemodynamic parameters to reflect the hemodynamic changes of TRAS.
4.Safety and effectiveness of lecanemab in Chinese patients with early Alzheimer's disease: Evidence from a multidimensional real-world study.
Wenyan KANG ; Chao GAO ; Xiaoyan LI ; Xiaoxue WANG ; Huizhu ZHONG ; Qiao WEI ; Yonghua TANG ; Peijian HUANG ; Ruinan SHEN ; Lingyun CHEN ; Jing ZHANG ; Rong FANG ; Wei WEI ; Fengjuan ZHANG ; Gaiyan ZHOU ; Weihong YUAN ; Xi CHEN ; Zhao YANG ; Ying WU ; Wenli XU ; Shuo ZHU ; Liwen ZHANG ; Naying HE ; Weihuan FANG ; Miao ZHANG ; Yu ZHANG ; Huijun JU ; Yaya BAI ; Jun LIU
Chinese Medical Journal 2025;138(22):2907-2916
INTRODUCTION:
Lecanemab has shown promise in treating early Alzheimer's disease (AD), but its safety and efficacy in Chinese populations remain unexplored. This study aimed to evaluate the safety and 6-month clinical outcomes of lecanemab in Chinese patients with mild cognitive impairment (MCI) or mild AD.
METHODS:
In this single-arm, real-world study, participants with MCI due to AD or mild AD received biweekly intravenous lecanemab (10 mg/kg). The study was conducted at Hainan Branch, Ruijin Hospital Shanghai Jiao Tong University School of Medicine. Patient enrollment and baseline assessments commenced in November 2023. Safety assessments included monitoring for amyloid-related imaging abnormalities (ARIA) and other adverse events. Clinical and biomarker changes from baseline to 6 months were evaluated using cognitive scales (mini-mental state examination [MMSE], montreal cognitive assessment [MoCA], clinical dementia rating-sum of boxes [CDR-SB]), plasma biomarker analysis, and advanced neuroimaging.
RESULTS:
A total of 64 patients were enrolled in this ongoing real-world study. Safety analysis revealed predominantly mild adverse events, with infusion-related reactions (20.3%, 13/64) being the most common. Of these, 69.2% (9/13) occurred during the initial infusion and 84.6% (11/13) did not recur. ARIA-H (microhemorrhages/superficial siderosis) and ARIA-E (edema/effusion) were observed in 9.4% (6/64) and 3.1% (2/64) of participants, respectively, with only two symptomatic cases (one ARIA-E presenting with headache and one ARIA-H with visual disturbances). After 6 months of treatment, cognitive scores remained stable compared to baseline (MMSE: 22.33 ± 5.58 vs . 21.27 ± 4.30, P = 0.733; MoCA: 16.38 ± 6.67 vs . 15.90 ± 4.78, P = 0.785; CDR-SB: 2.30 ± 1.65 vs . 3.16 ± 1.72, P = 0.357), while significantly increasing plasma amyloid-β 42 (Aβ42) (+21.42%) and Aβ40 (+23.53%) levels compared to baseline.
CONCLUSIONS:
Lecanemab demonstrated a favorable safety profile in Chinese patients with early AD. Cognitive stability and biomarker changes over 6 months suggest potential efficacy, though high dropout rates and absence of a control group warrant cautious interpretation. These findings provide preliminary real-world evidence for lecanemab's use in China, supporting further investigation in larger controlled studies.
REGISTRATION
ClinicalTrials.gov , NCT07034222.
Humans
;
Alzheimer Disease/drug therapy*
;
Male
;
Female
;
Aged
;
Middle Aged
;
Cognitive Dysfunction/drug therapy*
;
Aged, 80 and over
;
Amyloid beta-Peptides/metabolism*
;
Biomarkers
;
East Asian People
5.Expert consensus on visualized tele-round and quality control management based on the improvement of clinical practice ability
Wanhong YIN ; Xiaoting WANG ; Ran ZHOU ; Dawei LIU ; Yan KANG ; Yaoqing TANG ; Xiaochun MA ; Jianguo LI ; Zhenjie HU ; Haitao ZHANG ; Wei HE ; Lixia LIU ; Wenjin CHEN ; Ran ZHU ; Jun WU ; Hongmin ZHANG ; Lina ZHANG ; Wenzhao CHAI ; Shihong ZHU ; Wangbin XU ; Rongqing SUN ; Xiangyou YU ; Tianjiao SONG ; Ying ZHU ; Hong REN ; Ai SHANMU ; Qing ZHANG ; Wei FANG ; Xiuling SHANG ; Liwen LYU ; Shuhan CAI ; Xin DING ; Heng ZHANG ; Guang FENG ; Lipeng ZHANG ; Bo HU ; Dong ZHANG ; Weidong WU ; Feng SHEN ; Xiaojun YANG ; Zhenguo ZENG ; Qibing HUANG ; Xueying ZENG ; Tongjuan ZOU ; Milin PENG ; Yulong YAO ; Mingming CHEN ; Hui LIAN ; Jingmei WANG ; Yong LI ; Feng QU ; Gang YE ; Rongli YANG ; Xiukai CHEN ; Suwei LI ; Juxiang WANG ; Yangong CHAO
Chinese Journal of Internal Medicine 2025;64(2):101-109
Turning to critical illness is a common stage of various diseases and injuries before death. Patients usually have complex health conditions, while the treatment process involves a wide range of content, along with high requirements for doctor′s professionalism and multi-specialty teamwork, as well as a great demand for time-sensitive treatments. However, this is not matched with critical care professionals and the current state of medical care in China. Telemedicine, which shortens the distance of medical professionals and the gap of disease diagnosis and treatments in various regions through electronic information, can effectively solve the current problem. Therefore, there is an urgent need to develop a standardized, high-quality visualization telemedicine round system .Therefore, experts have been organized to search domestic and foreign literature on telemedicine round for critically ill patients and to form this consensus based on clinical experiences so as to further improve the level of critical care treatments in regions.
6.Effect of Schisandra chinensis polysaccharide on mitochondrial autophagy in skeletal muscle in exercise-fatigue mice based on the nuclear factor erythroid 2-related factor 2/antioxidant response element pathway
Junwen JIANG ; Liwen QIN ; Yangfeng SHEN
Chinese Journal of Comparative Medicine 2025;35(6):65-73
Objective To investigate the effect of Schisandra chinensis polysaccharide(SCP)on mitochondrial autophagy in skeletal muscle in exercise-fatigue mice based on the nuclear factor erythroid 2-related factor 2(Nrf2)/antioxidant response element ARE pathway.Methods A fatigue mouse model was established by swimming training.Mice were assigned randomly to fatigue,SCP(20 mg/kg),Rhodiola rosea(8 mL/kg),inhibitor(30 mg/kg ML385),and SCP+inhibitor groups,with normal mice as the control group.Serum was separated and levels of lactic acid(LA),lactate dehydrogenase(LDH),blood urea nitrogen(BUN),and creatine kinase(CK)were detected.Liver tissue was also isolated and levels of malondialdehyde(MDA),hepatic glycogen(HG),and superoxide dismutase(SOD)were detected.Skeletal muscle tissues were isolated and muscle glycogen(MG),changes in skeletal muscle tissue in exercise fatigue,and mitochondrial morphology were detected.Gene expression levels of mitochondrial transcription factor A(TFAM)and nuclear respiratory factor-1(NRF-1),and Nrf2,quinone oxidoreductase 1(NQO1),heme oxygenase-1(HO-1),and LC3 protein expression levels were analyzed.Results HG,MG,SOD,TFAM mRNA,NRF-1 mRNA,Nrf2,NQO1,HO-1,and LC3 Ⅱ/LC3 Ⅰ were lower in the fatigue group than in the control group,while levels of LA,BUN,LDH,CK,and MDA were higher than in the control group(P<0.05).HG,MG,SOD,TFAM mRNA,NRF-1 mRNA,Nrf2,NQO1,HO-1,and LC3 Ⅱ/LC3 Ⅰ levels were higher in the SCP and Rhodiola rosea groups than in the fatigue group,while LA,BUN,LDH,CK,and MDA levels were lower than in the fatigue group(P<0.05).The above indexes were opposite in the inhibitor group(P<0.05).Conclusions SCP promotes mitochondrial autophagy in skeletal muscle in exercise-fatigue mice by activating the Nrf2/ARE pathway,effectively exerting anti-fatigue effects.
7.A survey and analysis of gastroenterologists awareness of treatment goals for inflammatory bowel disease in China
Zhilan YOU ; Liwen JIN ; Jun SHEN ; Zhihua RAN ; Xianbin CAI
Chinese Journal of Inflammatory Bowel Diseases 2025;09(3):228-232
Objective:To investigate the awareness of Chinese gastroenterologists regarding the treatment targets of inflammatory bowel disease (IBD) as defined by the STRIDE-Ⅱ consensus and to identify challenges encountered in clinical practice.Methods:A nationwide cross-sectional survey was conducted via an online questionnaire distributed to gastroenterologists between February 16 and March 31, 2024. The survey encompassed demographic data, recognition and adherence to the STRIDE-Ⅱ consensus, perceived importance of IBD treatment targets, and clinical challenges.Results:A total of 203 valid questionnaires were collected from 28 provinces (autonomous regions/municipalities). The majority of participants (177/203, 87.2%) reported routinely referencing the STRIDE-Ⅱ consensus in IBD management. Over 90% of physicians identified endoscopic mucosal healing as the core treatment target. Additionally, approximately 80% emphasized the importance of clinical remission, endoscopic remission, quality-of-life improvement, disability prevention, and normalization of growth in pediatric patients. The challenges reported by more than half of physicians in acheiving the goals of the treatment process included lack of a standardized definition for mucosal healing (69.5%), management of psychological comorbidities (89.2%), drug failure (74.4%), penetrating Crohn's disease (72.4%), perianal fistulizing Crohn's disease (65.0%), and IBD management during pregnancy (61.1%).Conclusions:Chinese gastroenterologists demonstrate high awareness and adherence to the STRIDE-Ⅱ consensus, prioritizing mucosal healing as the cornerstone of IBD management. However, numerous challenges remain in clinical practice, particularly regarding operational definitions of therapeutic endpoints and complex disease phenotypes.
8.Effect of Schisandra chinensis polysaccharide on mitochondrial autophagy in skeletal muscle in exercise-fatigue mice based on the nuclear factor erythroid 2-related factor 2/antioxidant response element pathway
Junwen JIANG ; Liwen QIN ; Yangfeng SHEN
Chinese Journal of Comparative Medicine 2025;35(6):65-73
Objective To investigate the effect of Schisandra chinensis polysaccharide(SCP)on mitochondrial autophagy in skeletal muscle in exercise-fatigue mice based on the nuclear factor erythroid 2-related factor 2(Nrf2)/antioxidant response element ARE pathway.Methods A fatigue mouse model was established by swimming training.Mice were assigned randomly to fatigue,SCP(20 mg/kg),Rhodiola rosea(8 mL/kg),inhibitor(30 mg/kg ML385),and SCP+inhibitor groups,with normal mice as the control group.Serum was separated and levels of lactic acid(LA),lactate dehydrogenase(LDH),blood urea nitrogen(BUN),and creatine kinase(CK)were detected.Liver tissue was also isolated and levels of malondialdehyde(MDA),hepatic glycogen(HG),and superoxide dismutase(SOD)were detected.Skeletal muscle tissues were isolated and muscle glycogen(MG),changes in skeletal muscle tissue in exercise fatigue,and mitochondrial morphology were detected.Gene expression levels of mitochondrial transcription factor A(TFAM)and nuclear respiratory factor-1(NRF-1),and Nrf2,quinone oxidoreductase 1(NQO1),heme oxygenase-1(HO-1),and LC3 protein expression levels were analyzed.Results HG,MG,SOD,TFAM mRNA,NRF-1 mRNA,Nrf2,NQO1,HO-1,and LC3 Ⅱ/LC3 Ⅰ were lower in the fatigue group than in the control group,while levels of LA,BUN,LDH,CK,and MDA were higher than in the control group(P<0.05).HG,MG,SOD,TFAM mRNA,NRF-1 mRNA,Nrf2,NQO1,HO-1,and LC3 Ⅱ/LC3 Ⅰ levels were higher in the SCP and Rhodiola rosea groups than in the fatigue group,while LA,BUN,LDH,CK,and MDA levels were lower than in the fatigue group(P<0.05).The above indexes were opposite in the inhibitor group(P<0.05).Conclusions SCP promotes mitochondrial autophagy in skeletal muscle in exercise-fatigue mice by activating the Nrf2/ARE pathway,effectively exerting anti-fatigue effects.
9.Expert consensus on visualized tele-round and quality control management based on the improvement of clinical practice ability
Wanhong YIN ; Xiaoting WANG ; Ran ZHOU ; Dawei LIU ; Yan KANG ; Yaoqing TANG ; Xiaochun MA ; Jianguo LI ; Zhenjie HU ; Haitao ZHANG ; Wei HE ; Lixia LIU ; Wenjin CHEN ; Ran ZHU ; Jun WU ; Hongmin ZHANG ; Lina ZHANG ; Wenzhao CHAI ; Shihong ZHU ; Wangbin XU ; Rongqing SUN ; Xiangyou YU ; Tianjiao SONG ; Ying ZHU ; Hong REN ; Ai SHANMU ; Qing ZHANG ; Wei FANG ; Xiuling SHANG ; Liwen LYU ; Shuhan CAI ; Xin DING ; Heng ZHANG ; Guang FENG ; Lipeng ZHANG ; Bo HU ; Dong ZHANG ; Weidong WU ; Feng SHEN ; Xiaojun YANG ; Zhenguo ZENG ; Qibing HUANG ; Xueying ZENG ; Tongjuan ZOU ; Milin PENG ; Yulong YAO ; Mingming CHEN ; Hui LIAN ; Jingmei WANG ; Yong LI ; Feng QU ; Gang YE ; Rongli YANG ; Xiukai CHEN ; Suwei LI ; Juxiang WANG ; Yangong CHAO
Chinese Journal of Internal Medicine 2025;64(2):101-109
Turning to critical illness is a common stage of various diseases and injuries before death. Patients usually have complex health conditions, while the treatment process involves a wide range of content, along with high requirements for doctor′s professionalism and multi-specialty teamwork, as well as a great demand for time-sensitive treatments. However, this is not matched with critical care professionals and the current state of medical care in China. Telemedicine, which shortens the distance of medical professionals and the gap of disease diagnosis and treatments in various regions through electronic information, can effectively solve the current problem. Therefore, there is an urgent need to develop a standardized, high-quality visualization telemedicine round system .Therefore, experts have been organized to search domestic and foreign literature on telemedicine round for critically ill patients and to form this consensus based on clinical experiences so as to further improve the level of critical care treatments in regions.
10.Four-dimensional flow MRI evaluation of hemodynamic in transplant renal artery stenosis: a preliminary study
Liwen SHEN ; Zhaoyu XING ; Liang PAN ; Jie CHEN ; Songlin GUO ; Wei XING
Chinese Journal of Radiology 2025;59(3):286-292
Objective:To explore the value of four-dimensional flow (4D Flow) MRI in evaluating hemodynamic changes of transplant renal artery stenosis (TRAS).Methods:The study was a cross-sectional study. A retrospective analysis of 67 patients after renal transplantation was performed in Third Affiliated Hospital of Soochow University from January 2021 to October 2022. All patients were examined with non-contrast enhanced magnetic resonance angiography (NCE-MRA) and 4D Flow MRI. After NCE-MRA assessment, the patients were divided into a non stenosis group (39 cases), non-obvious stenosis group (stenosis degree<50%, 13 cases) and obvious stenosis group (stenosis degree≥50%, 15 cases). The 4D Flow MRI data were analyzed using the post-processing software CVI42 (Canada) to measure hemodynamic parameters of the transplanted renal artery in the non-stenosis group, as well as the proximal, central, and distal regions of the stenosis in the non-obvious stenosis group and obvious stenosis group. The parameters included net flow rate, maximum flow rate, average velocity, peak velocity, average wall shear stress, and maximum wall shear stress. One way analysis of variance and least significant difference (LSD) were used to test the differences of hemodynamic parameters among the three groups and between the proximal, central and distal regions of the stenosis. Pearson correlation coefficient was used to evaluate the correlation between hemodynamic parameters of transplant renal artery and estimated glomerular filtration rate (eGFR).Results:The net flow, maximum flow and average velocity at the proximal region of stenosis in the group with obvious stenosis of transplanted renal artery were significantly lower than those in the non-stenosis group and the non-obvious stenosis group (all P<0.05). The net flow and maximum flow at the distal region of stenosis in both obvious stenosis group and non-obvious stenosis group were lower than those in non-stenosis group, and the differences were statistically significant (both P<0.001). The mean velocity and peak velocity at the distal region of stenosis in the obvious stenosis group were higher than those in the non-stenosis group, and the differences were statistically significant (both P<0.05). The maximum and average wall shear stress at the distal region of stenosis in the obvious stenosis group were lower than those in the non-stenosis group and the non-obvious stenosis group, and the differences were statistically significant (both P<0.05). The net flow and maximum flow in the center region of stenosis were lower than those in the proximal region of stenosis, and the differences were statistically significant (both P<0.05). The peak velocity in the center region and distal region of stenosis was higher than those in the proximal region of stenosis, and the difference was statistically significant (both P<0.05). There was a positive correlation between the net flow and eGFR at the TRAS patients proximal, center, and distal stenosis ( r=0.270, 0.260, 0.320, respectively, P=0.044, 0.041, 0.036, respectively). There was a positive correlation between the maximum flow and eGFR at the TRAS patients proximal, center, and distal stenosis ( r=0.306, 0.276, 0.269, respectively, P=0.037, 0.041, 0.043, respectively). Conclusion:After TRAS, there is a significant change in blood flow status. The 4D Flow MRI can provide quantitative hemodynamic parameters to reflect the hemodynamic changes of TRAS.

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