1.Mechanism of Buyang Huanwutang in Inhibiting Ferroptosis and Enhancing Neurological Function Recovery After Spinal Cord Injury via GPX4-ACSL4 Axis
Luchun XU ; Guozheng JIANG ; Yukun MA ; Jiawei SONG ; Yushan GAO ; Guanlong WANG ; Jiaojiao FAN ; Yongdong YANG ; Xing YU ; Xiangsheng TANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(5):20-30
ObjectiveTo explore the mechanism by which Buyang Huanwutang regulates the glutathione peroxidase 4 (GPX4)-acyl-CoA synthetase long-chain family member 4 (ACSL4) axis to inhibit ferroptosis and promote neurological functional recovery after spinal cord injury (SCI). MethodsNinety rats were randomly divided into five groups: sham operation group, model group, low-dose Buyang Huanwutang group (12.5 g·kg-1), high-dose Buyang Huanwutang group (25 g·kg-1), and Buyang Huanwutang + inhibitor group (25 g·kg-1 + 5 g·kg-1 RSL3). The SCI model was established by using the allen method. Tissue was collected on the 7th and 28th days after operation. Motor function was assessed by using the Basso-Beattie-Bresnahan (BBB) scale. Hematoxylin-eosin (HE), Nissl, and Luxol fast blue (LFB) staining were performed to observe spinal cord histopathology. Transmission electron microscopy was used to examine mitochondrial ultrastructure. Immunofluorescence staining was used to detect the number of NeuN-positive cells and the fluorescence intensity of myelin basic protein (MBP), GPX4, and ACSL4. Real-time fluorescent quantitative polymerase chain reaction (Real-time PCR) was used to analyze the mRNA expression of GPX4 and ACSL4. Enzyme linked immunosorbent assay (ELISA) was performed to measure the levels of reactive oxygen species (ROS), malondialdehyde (MDA), glutathione (GSH), and superoxide dismutase (SOD). Colorimetric assays were used to determine the iron content in spinal cord tissue. ResultsCompared to the sham operation group, the model group exhibited significantly reduced BBB scores (P<0.01), severe pathological damage in spinal cord tissue, and marked mitochondrial ultrastructural disruption. In addition, the model group showed a decrease in the number of NeuN-positive cells (P<0.01), reduced fluorescence intensity of MBP and GPX4 (P<0.01), lower levels of GSH and SOD (P<0.01), and downregulated mRNA expression of GPX4 (P<0.01). Moreover, compared to the sham operation group, the model group had elevated levels of ROS, MDA, and tissue iron content (P<0.01), along with increased fluorescence intensity and mRNA expression of ACSL4 (P<0.01). Compared with the model group and Buyang Huanwutang + inhibitor group, the Buyang Huanwutang group showed significantly improved BBB scores (P<0.05, P<0.01) and exhibited less severe spinal cord tissue damage, reduced edema and inflammatory cell infiltration, increased neuronal survival, and more intact myelin structures. Additionally, mitochondrial ultrastructure was significantly improved in the Buyang Huanwutang group. Compared to the model group and Buyang Huanwutang + inhibitor group, the Buyang Huanwutang group significantly increased the number of NeuN-positive cells and the fluorescence intensity of MBP (P<0.05, P<0.01). Furthermore, Buyang Huanwutang significantly increased the fluorescence intensity and mRNA expression of GPX4 (P<0.01) and decreased the fluorescence intensity and mRNA expression of ACSL4 (P<0.01) compared to the model group and Buyang Huanwutang + inhibitor group. Finally, the Buyang Huanwutang group significantly decreased ROS, MDA, and tissue iron content (P<0.01) and significantly increased GSH and SOD levels (P<0.01) compared to the model group and Buyang Huanwutang + inhibitor group. ConclusionBuyang Huanwutang inhibits ferroptosis through the GPX4/ACSL4 axis, reduces secondary neuronal and myelin injury and oxidative stress, and ultimately promotes the recovery of neurological function.
2.Pharmaceutical care for a patient with empagliflozin-induced euglycemic diabetic ketoacidosis
Lili YANG ; Qi LI ; Hui WANG ; Ruilong GAO ; Min MAO
China Pharmacy 2025;36(2):214-218
OBJECTIVE To provide a reference for the pharmaceutical care of a patient with type 2 diabetes mellitus (T2DM) and limb-girdle muscular dystrophy (LGMD) who developed euglycemic diabetic ketoacidosis (euDKA) after taking empagliflozin. METHODS Clinical pharmacists provided pharmaceutical care for a patient with T2DM and LGMD who developed euDKA after taking empagliflozin. According to the patient’s recent use of medications and his conditions, clinical pharmacists assessed the correlation between euDKA and empagliflozin as “very likely”. As to euDKA, clinical pharmacists suggested discontinuing empagliflozin and metformin, and giving intravenous infusion of 10% Glucose injection instead of 5% Glucose injection for fluid resuscitation. Clinical pharmacists monitored the patient’s laboratory indicators such as arterial blood gas analysis, blood/urine ketones and electrolytes. They assisted physicians to decide when to stop intravenous supplements of liquid and insulin. Clinical pharmacists also assisted physicians to adjust the antidiabetic drugs and educated the patient to avoid empagliflozin or other sodium- glucose linked transporter 2 inhibitors (SGLT2i). RESULTS Physicians adopted the suggestions of clinical pharmacists. After treatment, the patient’s condition improved, and he was allowed to be discharged with medication. CONCLUSIONS euDKA is a relatively rare and serious adverse reaction associated with SGLT2i, and the patients with LGMD are susceptible to euDKA. Clinical pharmacists assist physicians in developing personalized medication plans by evaluating the association between euDKA and empagliflozin, adjusting medication regimens,conducting pharmaceutical monitoring,and other pharmaceutical services. Meanwhile, they provide medication education to patients to ensure their medication safety.
3.Mechanism of inhibitory effect of total flavonoids from Taraxacum mongolicum on obesity in mice by regulating intestinal flora
Yixue GAO ; Lin GUO ; Linyan LANG ; Jing WU ; Haoyang WANG ; Jing YANG ; Mingsan MIAO ; Zhanzhan LI
China Pharmacy 2025;36(3):293-299
OBJECTIVE To investigate the mechanism of the inhibitory effect of total flavonoids from Taraxacum mongolicum on high-fat diet-induced obesity in mice through modulation of intestinal flora. METHODS Twenty-four C57BL/6J mice were randomly divided into blank group, model group and T. mongolicum total flavonoid group, with 8 mice in each group. Except for the blank group, the other 2 groups were given a high-fat diet, while T. mongolicum total flavonoid group was given T. mongolicum total flavonoid [400 mg/(kg·d)] intragastrically, once a day, for 8 consecutive weeks. During the experiment, the food intake of each group of mice was recorded. After the last medication, the body mass, fat weight, blood lipid level and pathological changes of liver and epididymal fat in mice were evaluated to observe the effect of T. mongolicum total flavonoid on the treatment of obesity in mice. The changes in abundance and structure of intestinal flora in mice were detected by amplicon sequencing; the effects of T. mongolicum total flavonoids on fat metabolism related genes were analyzed by qPCR. RESULTS Compared with model group, the body weight of mice in T. mongolicum total flavonoids group was decreased significantly (P<0.05); the levels of total lipid cholesterol, triglycerides, and LDL cholesterol were all decreased significantly (P<0.01), and the level of HDL cholesterol was increased significantly (P<0.01); the fat indexes of inguinal white adipose tissue and epididymal white wind_lz@hactcm.edu.cn adipose tissue were significantly reduced (P<0.05); significant improvement in hepatocellular steatosis and adipose cytopathy were significantly improved; mRNA expressions of COX7A1 and COX8B were significantly upregulated (P<0.05). The results of bacterial colony detection showed that compared with the model group, there was a rising trend in the diversity of the bacterial colony in T. mongolicum total flavonoids group, and the Sobs index characterization and β diversity were increased significantly (P<0.05). Relative abundances of Blautia, norank_f_Ruminococcaceae, Bilophila, Alistipes, classified_f_Ruminococcaceae, Parabacteroides, norank_f_Desulfovibrionaceae, Anaerotruncus were significantly up-regulated(P<0.05), while those of Faecalibaculum, Erysipelatoclostridium, GCA-900066575, Tuzzerella, Lactobacillus, norank_f_norank_o_RF39, achnospiraceae_FCS020_group were significantly down-regulated (P<0.05). CONCLUSIONS T. mongolicum total flavonoids can reduce body mass, fat weight and blood lipid levels, and repair the pathological damage to liver and epididymal fat in obese mice, which is related to improving intestinal flora disorders caused by high-fat diet.
4.Pharmaceutical care for a patient with empagliflozin-induced euglycemic diabetic ketoacidosis
Lili YANG ; Qi LI ; Hui WANG ; Ruilong GAO ; Min MAO
China Pharmacy 2025;36(2):214-218
OBJECTIVE To provide a reference for the pharmaceutical care of a patient with type 2 diabetes mellitus (T2DM) and limb-girdle muscular dystrophy (LGMD) who developed euglycemic diabetic ketoacidosis (euDKA) after taking empagliflozin. METHODS Clinical pharmacists provided pharmaceutical care for a patient with T2DM and LGMD who developed euDKA after taking empagliflozin. According to the patient’s recent use of medications and his conditions, clinical pharmacists assessed the correlation between euDKA and empagliflozin as “very likely”. As to euDKA, clinical pharmacists suggested discontinuing empagliflozin and metformin, and giving intravenous infusion of 10% Glucose injection instead of 5% Glucose injection for fluid resuscitation. Clinical pharmacists monitored the patient’s laboratory indicators such as arterial blood gas analysis, blood/urine ketones and electrolytes. They assisted physicians to decide when to stop intravenous supplements of liquid and insulin. Clinical pharmacists also assisted physicians to adjust the antidiabetic drugs and educated the patient to avoid empagliflozin or other sodium- glucose linked transporter 2 inhibitors (SGLT2i). RESULTS Physicians adopted the suggestions of clinical pharmacists. After treatment, the patient’s condition improved, and he was allowed to be discharged with medication. CONCLUSIONS euDKA is a relatively rare and serious adverse reaction associated with SGLT2i, and the patients with LGMD are susceptible to euDKA. Clinical pharmacists assist physicians in developing personalized medication plans by evaluating the association between euDKA and empagliflozin, adjusting medication regimens,conducting pharmaceutical monitoring,and other pharmaceutical services. Meanwhile, they provide medication education to patients to ensure their medication safety.
5.Mechanism of Xielitang Against Ulcerative Colitis in Mice Based on "Intestinal Flora-bile Acid" Axis
Xiaotian WANG ; Yaning BIAO ; Yixin ZHANG ; Jian CHEN ; Ya GAO ; Yufang ZHANG ; Muqing ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(1):30-38
ObjectiveTo investigate the protective effect of Xielitang on dextran sulfate sodium (DSS)-induced ulcerative colitis (UC) mice and its possible mechanism. MethodsDSS was used to establish UC model. Sixty mice were randomly divided into a normal group, a model group, a sulfasalazine group (0.6 g·kg-1), and low-, medium-, and high-dose Xielitang groups (1.67, 3.34, 6.68 g·kg-1). After treatment for 42 d, the colon length was recorded, and the disease activity index (DAI) score was calculated. Enzyme-linked immunosorbent assay (ELISA) was used to detect the serum levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-10 (IL-10). Hematoxylin-eosin (HE) staining was used to observe the pathomorphological changes of colon. Western blot was used to detect the protein expression of farnesoid X receptor (FXR), small heterodimer partner (SHP), liver receptor homolog-1 (LRH-1), cholesterol 7α-hydroxylase (CYP7A1), and fibroblast growth factor receptor 4 (FGFR4) in liver and FXR, sodium-dependent bile acid transporter (ASBT), and fibroblast growth factor 15 (FGF15) in ileum. 16S rRNA sequencing was used to analyze the intestinal flora. Moreover, ultra-high performance liquid chromatography–tandem mass spectrometry was used to detect the bile acid content. ResultsCompared with the normal group, the model group showed significantly decreased colon length, IL-10 content, α-diversity index, abundance of Firmicutes and Lactobacillus, and content of deoxycholic acid (DCA) and lithocholic acid (LCA) (P<0.01), significantly increased DAI score, IL-6 and TNF-α content, abundance of Bacteroidetes, and the content of cholic acid (CA), chenodeoxycholic acid (CDCA), and taurocholic acid (TCA) (P<0.05, P<0.01), significantly down-regulated protein expression of FXR, SHP, and FGFR4 in liver and FXR, ASBT, and FGF15 in ileum (P<0.01), and significantly up-regulated protein expression of LRH-1 and CYP7A1 in liver (P<0.01). In addition, the structure of colonic mucosa was destroyed, and inflammatory cells infiltrated in the model group. Compared with the model group, Xielitang could significantly increase the colon length, IL-10 content, α-diversity index, the abundance of Firmicutes and Lactobacillus, and DCA and LCA content (P<0.05, P<0.01), decrease DAI score, abundance of Bacteroidetes, and the content of IL-6, TNF-α, CA, CDCA, and TCA (P<0.01), up-regulate the protein expression of FXR, SHP, and FGFR4 in liver and FXR, ASBT, and FGF15 in ileum (P<0.01), and down-regulate the protein expression of LRH-1 and CYP7A1 in liver (P<0.01). The pathological damage of colonic mucosa was obviously alleviated. ConclusionXielitang protects against UC probably by regulating the "intestinal microbiota-bile acid" axis, regulating intestinal flora imbalance, and maintaining bile acid homeostasis.
6.Sesquiterpene ZH-13 from Aquilariae Lignum Resinatum Improves Neuroinflammation by Regulating JNK Phosphorylation
Ziyu YIN ; Yun GAO ; Junjiao WANG ; Weigang XUE ; Xueping PANG ; Huiting LIU ; Yunfang ZHAO ; Huixia HUO ; Jun LI ; Jiao ZHENG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(1):139-145
ObjectiveTo study the pharmacological substances and mechanisms through which sesquiterpene ZH-13 from Aquilariae Lignum Resinatum improves neuroinflammation. MethodsBV-2 microglial cells were stimulated with lipopolysaccharide (LPS) to induce neuroinflammation. The cells were divided into the normal group, the model group, and the ZH-13 low- and high-dose treatment groups (10, 20 μmol·L-1). The model group was treated with 1 μmol·L-1 LPS. Cell viability was assessed using the cell proliferation and activity assay (CCK-8 kit). Nitric oxide (NO) release in the cell supernatant was measured using a nitric oxide kit (Griess method). The mRNA expression levels of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), inducible nitric oxide synthase (iNOS), and interleukin-6 (IL-6) were detected by real-time fluorescence quantitative polymerase chain reaction (Real-time PCR). The phosphorylation of mitogen-activated protein kinase (MAPK) pathway proteins was assessed by Western blot. ResultsCompared with the model group, ZH-13 dose-dependently reduced NO release from BV-2 cells under LPS stimulation (P<0.05, P<0.01). In the 20 μmol·L-1 ZH-13 treatment group, the mRNA expression levels of IL-1β, TNF-α, iNOS, and IL-6 were significantly reduced compared to the model group (P<0.05, P<0.01). In both the low- and high-dose ZH-13 groups, the expression of the inflammatory factor TNF-α and the phosphorylation of c-Jun N-terminal kinase (JNK) in the upstream MAPK pathway were significantly reduced (P<0.05). After stimulation with the JNK agonist anisomycin (Ani), both low- and high-dose ZH-13 treatment groups showed reduced phosphorylation of JNK proteins compared to the Ani-treated group (P<0.01). ConclusionThe sesquiterpene compound ZH-13 from Aquilariae Lignum Resinatum significantly ameliorates LPS-induced neuroinflammatory responses in BV-2 cells by inhibiting excessive JNK phosphorylation and reducing TNF-α expression. These findings elucidate the pharmacological substances and mechanisms underlying the sedative and calming effects of Aquilariae Lignum Resinatum.
7.Compound Xishu Granules Inhibit Proliferation of Hepatocellular Carcinoma Cells by Regulating Ferroptosis
Yuan TIAN ; Yuxi WANG ; Zhen LIU ; Yuncheng MA ; Hongyu ZHU ; Xiaozhu WANG ; Qian LI ; Jian GAO ; Weiling WANG ; Wenhui XU ; Ting WANG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(2):37-45
ObjectiveTo study the mechanism of compound Xishu granules (CXG) in inhibiting the proliferation of hepatocellular carcinoma cells by regulating ferroptosis. MethodsThe transplanted tumor model of human Huh7 was established with nude mice and the successfully modeled mice were randomized into model, Fufang Banmao (0.21 g·kg-1), low-dose (1.87 g·kg-1) CXG, medium-dose (3.74 g·kg-1) CXG, and high-dose (7.49 g·kg-1) CXG groups. Mice were administrated with drinking water or CXG for 28 days, and the body weight and tumor volume were measured every 4 days. Hematoxylin-eosin staining was employed to observe the histopathological changes of tumors. The cell-counting kit-8 (CCK-8) was used to examine the survival rate of Huh7 cells treated with different concentrations (0, 31.25, 62.5, 125, 250, 500, 1 000 mg·L-1) of CXG for 24 h and 48 h. CA-AM, DCFH-DA, and C11-BODIPY581/591 fluorescent probes were used to determine the intracellular levels of ferrous ion (Fe2+), reactive oxygen species (ROS), and lipid peroxide (LPO), respectively. The colorimetric method was employed to measure the levels of glutathione (GSH) and superoxide dismutase (SOD). Western blot was employed to determine the protein levels of glutathione peroxidase 4 (GPX4), transferrin receptor 1 (TFR1), and ferritin heavy chain 1 (FTH1), respectively. ResultsIn the animal experiment, compared with the model group, the drug treatment groups showed reductions in the tumor volume from day 12 (P<0.01). After treatment, the Fufang Banmao and low-, medium-, and high-dose CXG groups had lower tumor volume, relative tumor volume, and tumor weight than the model group (P<0.05), with tumor inhibition rates of 48.99%, 79.93%, 91.38%, and 97.36%, respectively. Moreover, the CXG groups had lower tumor volume and relative tumor volume (P<0.05 in all the three dose groups) and lower tumor weight (P<0.05 in medium-dose and high-dose groups) than the Fufang Banmao group. Compared with the model group, the drug treatment groups showed reduced number of tumor cells, necrotic foci with karyopyknosis, nuclear fragmentation, and nucleolysis, and the high-dose CXG group showed an increase in the proportion of interstitial fibroblasts. In the cell experiment, compared with the blank group, CXG reduced the survival rate of Huh7 cells in a dose-dependent manner after incubation for 24 h and 48 h (P<0.05). Compared with the blank group, the RSL3 group and the low-, medium-, and high-dose CXG groups showed a decrease in the relative fluorescence intensity of CA-AM and increases in the fluorescence intensity of DCFH-DA and fluorescence ratio of C11-BODIPY581/591, which indicated elevations in the levels of Fe2+ (P<0.01), ROS (P<0.05), and LPO (P<0.01), respectively. Compared with the blank group, the RSL3 and low-, medium-, and high-dose CXG groups showed lowered levels of GSH and SOD (P<0.05). In addition, the RSL3 group and the medium- and high-dose CXG groups showed down-regulated expression of GPX4 and FTH1 (P<0.05), and the low- and high-dose CXG groups presented up-regulated expression of TFR1 (P<0.05). ConclusionCXG suppresses the proliferation of hepatocellular carcinoma cells by inducing ferroptosis via downregulating the GSH-GPX4 signaling axis and increasing intracellular Fe2+and LPO levels.
8.Effects of Shenfuhuang Formula (参附黄配方) on Potential Targets of Action in the Brain Tissue of Sepsis Model Mice:Transcriptomics-Based Exploration
Yuchen WANG ; Xuerui WANG ; Xiaolong XU ; Jingxia ZHAO ; Jiabo WANG ; Yuan GAO ; Weijun KONG ; Qingquan LIU
Journal of Traditional Chinese Medicine 2025;66(1):65-70
ObjectiveTo investigate the possible mechanism of Shenfuhuang Formula (参附黄配方) in prevention and treatment of epsis-associated encephalopathy from the perspective of brain genomics. MethodsC57BL/6 mice were randomly divided into sham surgery group, sepsis group, and Shenfuhuang group, with 20 mice in each group. The sepsis group and Shenfuhuang group were induced to develop sepsis by cecal ligation and puncture (CLP) procedure. At 4 hours after modelling, Shenfuhuang group were gavaged with 2.5 g/(kg·d) of Shenfuhuang Formula, 0.5 ml each time, at 12 hours intervals, for a total of 4 times after modelling. Sepsis group and sham surgery group were given 0.5 ml of purified water orally. At 48 hours after modeling, the transcriptome sequencing was used to explore the differential gene expression in the effects of Shenfuhuang Formula on the brain regions of septic mice, and real-time PCR and ELISA were later used to further validate the differential gene and proteins expression. ResultsA total of 4605 genes were differentially expressed in Shenfuhuang group compared with sepsis group, of which 2353 genes were up-regulated and 2252 genes were down-regulated. According to the results of previous publications, six key genes were screened, including serine/threonine-protein kinase (Nek1), myelin-associated glycoprotein (Mag), endothelial cell-specific tyrosine kinase receptor (Tek), a disintegrin and metalloproteinase with thrombospondin motifs 20 (Adamts20), lymphocyte antigen 86 (Ly86), and E3 ubiquitin-protein ligase (Traip). Further genetic and protein validation revealed that, compared to the sham surgery group, the mRNA levels and corresponding protein levels of Nek1, Mag, Tek, Adamts20, Ly86, and Traip in the brain tissue of septic mice significantly reduced (P<0.05). In comparison to the sepsis group, Shenfuhuang group showed significantly increased mRNA levels and corresponding protein levels of Nek1, Mag, Tek, Adamts20, Ly86, and Traip (P<0.05). ConclusionThe potential therapeutic targets of Shenfuhuang Formula for treating sepsis-associated encephalopathy may be related to the Nek1, Mag, Tek, Adamts20, Ly86, and Traip genes and their encoded proteins.
9.Availability and use of child safety seats among children aged 0-3 years
CHEN Bo ; WANG Xihui ; QIU Fengqian ; YU Yan ; GAO Shuna ; HE Lihua ; LI Weiyi ; JI Yunfang ; CHEN Weihua
Journal of Preventive Medicine 2025;37(1):21-25
Objective:
To investigate the availability and use of child safety seats among children aged 0-3 years, so as to provide the basis for improving riding safety for children.
Methods:
Parents of children aged 0-3 years in Huangpu District, Shanghai Municipality, were recruited using the stratified multistage random sampling method from May to July 2024. Demographic information, family travel patterns, the use of child safety seat and related health beliefs were collected using questionnaire surveys. Factors affecting the use of child safety seats were identified using a multivariable logistic regression model.
Results:
Totally 514 valid questionnaires were recovered, with an effective rate of 96.98%. The respondents included 122 fathers (23.74%) and 392 mothers (76.26%), with a median age of 34.00 (interquartile range, 5.00) years. There were 446 families equipping with child safety seats, accounting for 86.77%; and 169 families using child safety seats, accounting for 32.88%. Multivariable logistic regression analysis showed that the parents who had children aged >1-2 years (OR=0.597, 95%CI: 0.366-0.973), travelled 2-4 times per month (OR=0.359, 95%CI: 0.213-0.607) or once per month or less (OR=0.384, 95%CI: 0.202-0.729), and scored high in perceived barrier (OR=0.634, 95%CI: 0.486-0.827) were less likely to use child safety seats; the parents who had children with local household registration (OR=2.506, 95%CI: 1.356-4.633), travelled 5-<10 km (OR=1.887, 95%CI: 1.148-3.101) or ≥10 km (OR=2.319, 95%CI: 1.355-3.967), always wore seat belts (OR=2.342, 95%CI: 1.212-4.524), scored high in perceived susceptibility (OR=1.392, 95%CI: 1.091-1.778) and self-efficacy (OR=1.413, 95%CI: 1.156-1.727) were more likely to use child safety seats.
Conclusions
Equipping family cars with child safety seats and using them can prevent and reduce traffic injuries among children aged 0-3 years. It is recommended to strengthen publicity to promote the use of child safety seats.
10.A survival prediction model for kidney graft based on the kidney donor profile index, time-zero biopsy and donor’s age
Chengxi JIANG ; Shunliang YANG ; Xia GAO ; Liqian WU ; Jiashu LIU ; Dong WANG
Organ Transplantation 2025;16(1):122-130
Objective To construct a predictive model for the survival of transplant kidneys after kidney transplantation. Methods The clinical data of 366 kidney transplant recipients and donors were retrospectively analyzed, and the recipients were divided into low-risk group (n=101), medium-risk group (n=189), and high-risk group (n=76) based on the kidney donor profile index (KDPI). Each group was further divided into Remuzzi score ≤3 group and Remuzzi score >3 group based on time-zero biopsy Remuzzi scores. Kaplan-Meier method was used to analyze the survival of transplant kidneys. Univariate and multivariate Cox regression analyses were performed to identify risk factors affecting long-term survival after kidney transplantation. A predictive model for transplant kidney survival was established and a nomogram was drawn. The predictive performance of the model was evaluated using the receiver operating characteristic (ROC) curve and the area under the curve (AUC). Results The median KDPI was 65%, and the median Remuzzi score was 3. The 5-year survival rate of transplant kidneys was 83.5%. Kaplan-Meier survival curves showed that in the KDPI medium-risk and KDPI high-risk groups, the subgroup with lower Remuzzi score had a higher survival rates of transplant kidneys than the subgroup with higher Remuzzi score. Univariate and multivariate Cox regression analyses showed that KDPI, Remuzzi score, and donor’s age were independent risk factors for transplant kidney loss (all P<0.05). The ROC curve showed that the AUC of the nomogram prediction model established based on independent risk factors for the 1, 3 and 5-year survival rates of transplant kidneys were 0.91, 0.93 and 0.94 for the training set, and 0.89, 0.85 and 0.88 for the validation set. Calibration curves shows good consistency between the training and validation sets of the model. Conclusions The nomogram predictive model based on KDPI, time-zero biopsy Remuzzi score and donor’s age has good predictive value for transplant kidney survival.


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