1.Xiaozheng Zhitong Paste Alleviates Bone Cancer Pain by Regulating PD-1/PD-L1-induced Osteoclast Formation
Lu SHANG ; Juanxia REN ; Guangda ZHENG ; Linghan MENG ; Lingyun WANG ; Changlin LI ; Dongtao LI ; Yaohua CHEN ; Guiping YANG ; Yanju BAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):72-79
ObjectiveThis study aims to investigate the action mechanism by which Xiaozheng Zhitong paste (XZP) alleviates bone cancer pain (BCP) by regulating programmed death protein 1 (PD-1)/programmed death-ligand 1 (PD-L1) pathway-induced osteoclast formation. MethodsThirty female C57BL/6 mice were randomly allocated into the following groups (n=6 per group): normal control group, model group, low‑dose XZP group (31.5 g·kg-1), high‑dose XZP group (63 g·kg-1), and PD‑1 inhibitor (Niv) group. A bone cancer pain (BCP) model was established by injecting Lewis lung carcinoma cells. Mice in the normal control and model groups received topical application of a blank paste matrix at the wound site. Mice in the low‑ and high‑dose XZP groups were treated with XZP applied topically twice daily. Mice in the Niv group were topically administered the blank paste matrix and additionally received Niv via tail‑vein injection every two days. All interventions were continued for 21 days. During this period, behavioral tests were performed to assess mechanical, motor, and thermal nociceptive sensitivities. After 21 days, all mice were euthanized, and bone tissue from the operated side was collected for sectioning and preservation. Tartrate‑resistant acid phosphatase (TRAP) staining was used to evaluate osteoclast expression in the lesioned bone tissue. Immunohistochemistry was performed to detect the expression of Runt‑related transcription factor 2 (Runx2) in the lesioned bone tissue. Immunofluorescence was employed to assess the expression of PD‑1 and PD‑L1 in the lesioned bone tissue. ResultsCompared with the normal group, the model group showed significantly decreased limb mechanical withdrawal threshold, spontaneous paw flinching, and thermal withdrawal latency (P<0.01), increased number of osteoclasts in the lesioned bone tissue (P<0.01), and reduced expression of Runx2 (P<0.01). Compared with the model group, the BCP mice in the XZP low-dose group, XZP high-dose group, and Niv group exhibited increased limb mechanical withdrawal threshold, movement scores, and thermal withdrawal latency (P<0.01). The XZP low-dose group showed no significant changes in osteoclast number or Runx2 expression, while the XZP high-dose group and Niv group demonstrated significantly reduced osteoclast numbers (P<0.01) and significantly increased Runx2 expression (P<0.01). In the lesioned bone tissue of BCP mice, the XZP low-dose group showed no significant decrease in the percentage of PD-1 expression, but a decrease in the percentage of PD-L1 expression (P<0.05). In contrast, both the XZP high-dose group and the Niv group exhibited significant reductions in the percentages of PD-1 and PD-L1 expression (P<0.01). ConclusionXZP alleviates the pain of mice with BCP by blocking the PD-1/PD-L1 pathway to inhibit osteoclastogenesis.
2.Mechanism of Xiaozheng Zhitong Paste in Alleviating Bone Cancer Pain by Regulating Microglial Pyroptosis Based on PINK1/Parkin/NLRP3 Signaling Pathway
Lingyun WANG ; Guangda ZHENG ; Lu SHANG ; Juanxia REN ; Changlin LI ; Dongtao LI ; Haixiao LIU ; Yaohua CHEN ; Guiping YANG ; Yanju BAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):80-90
ObjectiveThe paper aims to investigate the mechanism by which Xiaozheng Zhitong paste (XZP) alleviates bone cancer pain (BCP) through regulating the PTEN-induced putative kinase 1 (PINK1)/Parkin-mediated mitophagy-NOD-like receptor protein 3 (NLRP3) inflammasome pathway to suppress microglial pyroptosis. MethodsLipopolysaccharide (LPS) and LPS-adenosine triphosphate (ATP) were used to establish an inflammation and pyroptosis model in microglial cells. The cells were randomly divided into the following groups: control group, LPS group, LPS+low-dose XZP group, LPS+high-dose XZP group, LPS-ATP group, LPS-ATP+low-dose XZP group, LPS-ATP+high-dose XZP group, LPS-ATP+XZP group, and LPS-ATP+XZP+CsA group. Techniques including terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) staining, enzyme-linked immunosorbent assay (ELISA), Western blot, and confocal fluorescence staining were employed to assess the effects of XZP on microglial apoptosis, inflammatory cytokine release, inflammasome activation, pyroptosis, and mitophagy. ResultsIn vitro experiments showed that compared with the blank group, the LPS group exhibited significantly increased levels of microglial apoptosis and pro-inflammatory factors interleukin (IL)-1β, IL-6, and tumor necrosis factor-α (TNF-α)(P<0.01), along with significantly upregulated protein expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and phosphorylated nuclear factor-κB p65 (p-NF-κB p65) (P<0.01). Compared with the LPS group, the high-dose LPS-XZP group significantly reduced the level of apoptosis (P<0.01) and the content of the aforementioned pro-inflammatory factors (P<0.01). Both the low- and high-dose LPS-XZP groups dose-dependently downregulated the protein expression of iNOS, COX-2, and p-NF-κB p65 (P<0.05, P<0.01). Compared with the blank group, the LPS-ATP group showed significantly upregulated expression of pyroptosis-related proteins, including Caspase-1/pro-Caspase-1, N-terminal fragment of gasdermin D (GSDMD-N)/full-length gasdermin D (GSDMD-F), NLRP3, apoptosis-associated speck-like protein containing a CARD (ASC), IL-1β precursor (pro-IL-1β), and mature IL-1β (P<0.01). The levels of pyroptotic factors IL-1β and IL-18 were significantly elevated (P<0.01), and membrane pore formation and intracellular reactive oxygen species (ROS) levels were significantly increased (P<0.01). Compared with the LPS-ATP group, both the low- and high-dose LPS-ATP+XZP groups dose-dependently downregulated the expression of the aforementioned pyroptosis-related proteins (P<0.05, P<0.01). The low-dose LPS-ATP+XZP group reduced IL-1β levels (P<0.01), while the high-dose group reduced both IL-1β and IL-18 levels (P<0.01) Both the low- and high-dose LPS-ATP+XZP groups dose-dependently reduced membrane pore formation and intracellular ROS production (P<0.01). Compared with the blank group, the LPS-ATP group showed significantly reduced expression of mitophagy-related proteins PINK1 and Parkin, and a decreased ratio of microtubule-associated protein 1 light chain 3Ⅱ(LC3Ⅱ) to LC3Ⅰ(P<0.01), while p62 expression was significantly increased (P<0.01). Mitochondrial ROS levels were significantly enhanced (P<0.01). Compared with the LPS-ATP group, both the low- and high-dose LPS-ATP+XZP groups dose-dependently reversed the expression of these proteins (P<0.05, P<0.01) and reduced mitochondrial ROS levels (P<0.01). After treatment with the mitophagy inhibitor cyclosporin A (CsA), the beneficial effects of XZP on mitochondrial function and its inhibitory effects on pyroptosis-related protein expression were significantly reversed (P<0.05, P<0.01). ConclusionXZP reduces ROS levels by activating PINK1/Parkin-mediated mitophagy, thereby inhibiting NLRP3 inflammasome activation and microglial pyroptosis, which provides new molecular evidence for the mechanism by which XZP alleviates BCP.
3.Xiaozheng Zhitong Paste Relieves Bone Cancer Pain in Mice by Alleviating Activation of Microglia in Spinal Cord and Damage to Neurons via Blocking PAR2/NF-κB/NLRP3 Pathway
Guangda ZHENG ; Linghan MENG ; Lu SHANG ; Juanxia REN ; Dongtao LI ; Haixiao LIU ; Lingyun WANG ; Changlin LI ; Yaohua CHEN ; Guiping YANG ; Yanju BAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):91-100
ObjectiveTo investigate the effects and underlying mechanisms of Xiaozheng Zhitong Paste (XZP) on bone cancer pain (BCP). MethodsThirty female BALB/c mice were randomly divided into five groups: a Sham group, a BCP group, a BCP+low-dose XZP group, a BCP+high-dose XZP group, and a BCP+high-dose XZP + protease-activated receptor 2 (PAR2) agonist GB-110 group. BCP mice model was constructed by injecting Lewis lung carcinoma cells into the femoral cavity of the right leg, which was followed by being treated with XZP for 21 d. After 21 d, the mice were sacrificed. Nissl staining was used to evaluate the survival of spinal cord neurons. Immunofluorescence staining was conducted to localize ionized calcium-binding adapter molecule 1 (Iba1) and neuronal nuclear antigen (NeuN) in spinal cord tissue, thereby assessing microglial activation and neuronal survival. Enzyme-linked immunosorbent assay (ELISA) was employed to measure the levels of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), transforming growth factor-β (TGF-β), interleukin-4 (IL-4), and interleukin-10 (IL-10) in spinal cord tissue. Real-time quantitative polymerase chain reaction (Real-time PCR) was used to detect mRNA expression levels associated with M1/M2 polarization of microglia. Western blot analysis was performed to examine the expression of proteins related to microglial polarization as well as those involved in the PAR2/nuclear factor kappa B (NF-κB)/NOD-like receptor protein 3 (NLRP3) signaling pathway in the spinal cord. ResultsCompared with the Sham group, the spinal cord neurons were damaged, the number of Nissl-positive spinal cord neurons in the spinal cord tissue was significantly reduced (P<0.01), and the rate of NeuN-positive cells was significantly decreased (P<0.01). The spinal cord microglia were activated, the inflammatory level of the spinal cord tissue was enhanced, and Iba1 staining was significantly enhanced (P<0.01). The levels of IL-1β, TNF-α, IL-6, TGF-β, IL-4 and IL-10 were significantly increased (P<0.01). The mRNA expressions of IL-1β, TNF-α and inducible nitric oxide synthase (iNOS) were significantly increased (P<0.01), and the expression of PAR2, NLRP3, ASC and NF-κB p65 proteins in the spinal cord tissue of the BCP mice was significantly enhanced (P<0.01). Compared with the BCP group, high-dose XZP treatment significantly increased the number of Nissl-positive spinal cord neurons in the BCP mice (P<0.01), significantly enhanced the rate of NeuN-positive cells in the spinal cord tissue, and significantly weakened Iba1 staining (P<0.01). In addition, the levels of IL-1β, TNF-α, and IL-6 were significantly decreased, while the levels of TGF-β, IL-4, and IL-10 were significantly increased (P<0.05, P<0.01). The mRNA expression levels of IL-1β, TNF-α, and iNOS were decreased, whereas those of cluster of differentiation 206 (CD206), arginase-1 (Arg-1), and YM1/2 were significantly increased (P<0.05, P<0.01). Low-dose and high-dose XZP treatment significantly decreased the expression of PAR2, NLRP3, ASC, and NF-κB p65 proteins in the spinal cord tissue (P<0.05, P<0.01). These effects could all be significantly eliminated by the PAR2 agonist GB-110. ConclusionXZP can mitigate BCP in mice, which may be achieved through blocking the activated PAR2/NF-κB/NLRP3 pathway.
4.Xiaozheng Zhitong Paste Alleviates Bone Cancer Pain of Mice by Reducing Ferroptosis in Spinal Cord Tissue and Neuronal Damage via Regulating Nrf2/HO-1/GPX4/SLC7A11 Signaling Pathway
Juanxia REN ; Lu SHANG ; Guangda ZHENG ; Linghan MENG ; Lingyun WANG ; Changlin LI ; Dongtao LI ; Yaohua CHEN ; Guiping YANG ; Yanju BAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):101-113
ObjectiveThe paper aims to investigate the action mechanism by which the Xiaozheng Zhitong paste (XZP) relieves bone cancer pain (BCP). MethodsA model of mice with BCP was established by using Lewis tumor cells. The therapeutic effects of XZP, the ferroptosis inhibitor Ferrostatin-1 (Fer-1), and the nuclear factor erythroid 2-related factor 2 (Nrf2) inhibitor Brusatol (Bru) on BCP were examined. Mice were randomly divided into the Sham operation group, BCP group, BCP+XZP-L group, BCP+XZP-H group, BCP+Fer-1 group, and BCP+XZP-H+Bru group, with six mice in each group. Pain behavior tests were conducted on the mice to assess pain levels. Colorimetric assays were employed to measure ferroptosis-related factors in serum and spinal cord tissue including Fe, malondialdehyde (MDA), reactive oxygen species (ROS), and superoxide dismutase (SOD). Immunofluorescence staining was used to assess ROS production in spinal cord tissue. Transmission electron microscopy was used to observe the ultrastructure of mitochondria in lumbar spinal cord tissue. Quantitative real-time polymerase chain reaction (Real-time PCR) was employed to detect mRNA expression of Nrf2, heme oxygenase-1 (HO-1), glutathione peroxidase 4 (GPX4), and solute carrier family 7 member 11 (SLC7A11) in spinal cord neuron tissue. The protein expression of Nrf2, HO-1, GPX4, and SLC7A11 in spinal cord neurons was measured by Western blot. ResultsCompared with the Sham group, mice in the BCP group exhibited significantly reduced limb usage scores, mechanical foot withdrawal thresholds, and thermal foot withdrawal thresholds (P<0.01). Serum and lumbar spinal cord tissue levels of Fe, MDA, and reactive oxygen species (ROS) were significantly elevated (P<0.05), while superoxide dismutase (SOD) levels were significantly decreased (P<0.05). Lumbar spinal cord mitochondrial structural damage was observed, and mRNA and protein expression of Nrf2, HO-1, GPX4, and SLC7A11 were significantly downregulated (P<0.01). Compared with the BCP group, both low- and high-dose XZP groups improved the aforementioned pain behavioral indicators (P<0.05,P<0.01), reduced ferroptosis-related biomarkers including Fe, MDA, and ROS levels (P<0.05), increased SOD levels (P<0.05,P<0.01), alleviated mitochondrial damage, and upregulated Nrf2, HO-1, GPX4, SLC7A11 mRNA and protein expression (P<0.05,P<0.01). The high-dose XZP group exhibited comparable efficacy to Fer-1 in alleviating pain and inhibiting ferroptosis. Following Bru administration, XZP's effects on pain behavioral indicators, regulation of ferroptosis-related markers, mitochondrial structural protection, and activation of the Nrf2/HO-1/GPX4/SLC7A11 pathway were significantly reversed (P<0.05,P<0.01). ConclusionExternal application of XZP alleviates pain symptoms in BCP mice by activating the Nrf2/HO-1/GPX4/SLC7A11 pathway, thereby inhibiting ferroptosis and neuronal damage in spinal cord neurons.
5.Traditional Chinese Medicine for Cancer Pain Management: A Review
Lingyun WANG ; Guangda ZHENG ; Lu SHANG ; Juanxia REN ; Changlin LI ; Dongtao LI ; Haixiao LIU ; Yaohua CHEN ; Guiping YANG ; Yanju BAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):114-123
Cancer pain is one of the most common complications in patients with malignant tumors, severely affecting their quality of life. Its pathogenesis involves complex interactions among the tumor microenvironment, peripheral sensitization, and central sensitization. The tumor microenvironment initiates peripheral pain sensitization by secreting algogenic mediators, activating ion channels and related receptor signaling pathways, driving abnormal osteoclast activation, and mediating neuro-immune crosstalk. Persistent nociceptive input further triggers increased excitability of central neurons, activation of glial cells, and neuroinflammatory cascade reactions, ultimately leading to central pain sensitization. Although traditional opioid drugs can alleviate pain to some extent, they still have many limitations, such as incomplete analgesia, drug tolerance, and adverse reactions. In recent years, traditional Chinese medicine (TCM) compounds have made continuous progress in the treatment of cancer pain. Studies have shown that they can not only effectively relieve cancer pain and reduce the dosage of opioids but also significantly improve patients' quality of life. TCM treatment of cancer pain follows the principle of syndrome differentiation and treatment. Based on this, targeted therapeutic principles have been proposed, including promoting blood circulation, removing stasis, regulating Qi, and unblocking collaterals; tonifying the kidney, replenishing essence, warming Yang, and dispersing cold, activating blood, resolving phlegm, detoxifying, and dispersing nodules, as well as strengthening the body, replenishing deficiency, and harmonizing Qi and blood. Modern research indicates that TCM compounds can exert synergistic effects through multiple pathways, inhibiting inflammatory responses, regulating nerve conduction, intervening in bone metabolism and related gene expression, thereby producing anti-inflammatory and bone-protective effects to achieve the goal of alleviating cancer pain. This article systematically elaborates on the pathogenesis of cancer pain, the clinical application of TCM in treating cancer pain, and its related mechanisms of action, aiming to provide a theoretical basis and new strategies for the integration of TCM into comprehensive cancer pain management.
6.Stage-Ⅰ treatment of primary obstructive megaureter with severe hydroureteronephrosis in infants under 1 year old:loop cutaneous ureterostomy
Zhiwei WANG ; Huangchenghao ZHANG ; Guiping YAO ; Qiurong LI ; Dewei ZHANG ; Bing YAN
Journal of Modern Urology 2025;30(5):380-385
Objective: To evaluate the efficacy and prognosis of loop cutaneous ureterostomy (LCU) in the treatment of primary obstructive megaureter (POM) with severe hydroureteronephrosis (HUN) in infants under 1 year of age,so as to provide reference for infants unsuitable for stage-Ⅰ ureteral reimplantation. Methods: A retrospective analysis was conducted on 12 infants with POM and severe HUN treated with LCU in our hospital during Jan.2019 and Dec.2023.The clinical characteristics,surgical techniques,indications,postoperative complications,stage-Ⅱ surgical approaches,and follow-up outcomes were summarized. Results: All operations were successful,with an average operation time of (37.08±7.53) min (6 left-sided LCU and 6 right-sided LCU).During the mean follow-up of (10.12±2.70) months,all infants showed clinical improvement,with complete resolution or significant alleviation of hydronephrosis,reduced ureteral diameter,and increased renal cortical thickness.Complications included asymptomatic bacteriuria in 3 cases (25%) and urinary tract infection (UTI) in 1 case,all resolved with oral antibiotics.Four cases developed peristomal rashes,which improved with topical treatment.Eleven infants underwent stage-Ⅱ Cohen ureterovesical reimplantation at a mean age of (15.20±2.07) months.Notably,27.3%(3/11) required ureteral tailoring or plication during reimplantation,which reduced the risk of ischemic necrosis from excessive trimming.During the follow-up of (22.17±13.93) months,hydronephrosis and renal function improved,and no febrile UTI or bladder dysfunction occurred. Conclusion: LCU is a safe and effective method,which can provide adequate urinary drainage,relieve obstruction,stabilize renal function,and allow time for ureteral maturation and renal parenchymal recovery.LCU also facilitates subsequent stage-Ⅱ surgery by reducing ureteral dilation.
7.Analysis of WANG Mengying's academic thoughts on acupuncture-moxibustion therapy for cholera.
Mingde CHANG ; Linna WU ; Juyi WANG ; Yueqiao REN ; Yichun SHANG ; Guiping LI
Chinese Acupuncture & Moxibustion 2025;45(5):703-707
The paper introduces 5 books written by WANG Mengying, including Suixiju Chongding Huoluan Lun, Guiyan Lu, Wenre Jingwei, Wang Mengying Yi'an and Suixiju Yinshipu; and analyzes the ideas of diagnosis and treatment of cholera and the academic thoughts in treatment with acupuncture-moxibustion therapy. In pathogenesis, cholera is classified into cold and heat types. Cholera of heat type roots on qi and blood. If the pathogenic factors are mild and located shallowly, the sneezing method, followed by scraping method, is adopted to open meridians and collaterals, as well as the qi level, so as to eliminate pathogens. When the pathogens go deeply, the bloodletting technique is used to clean the toxic heat in blood level and reduce the reversed qi. For cholera of cold type, warm ironing moxibustion is delivered to promote qi circulation and disperse cold, and improve qi movement. If spasm and syncope occur in cholera, no matter of cold or heat identification, the emergent measure is operated with the external application of pungent, warm and salty herbal plaster at Yongquan (KI1). When the pathogens are almost eliminated, the herbal medicines are combined to treat the symptoms and remove the causative factors of the disease.
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Moxibustion/history*
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Humans
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Cholera/history*
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China
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History, Ancient
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Medicine in Literature
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Books/history*
8.Effect of esketamine on learning and memory function after chronic stress and hippocampal NMDAR-CaMK Ⅱ-CREB signaling pathway in developing rats
Guiping XU ; Xuexue ZHANG ; Yang WANG ; Yuxuan ZHANG
Chinese Journal of Anesthesiology 2024;44(3):353-357
Objective:To evaluate the effect of esketamine on learning and memory function after chronic stress and the signaling pathway of N-methyl-D-aspartate receptor (NMDAR)-calmodulin-dependent protein kinase type 2 (CaMKⅡ)-cAMP-responsive element-binding protein (CREB) in the hippocampus of developing rats.Methods:Sixty clean-grade healthy Sprague-Dawley rats of either sex, aged 7 days, weighing 10-15 g, were divided into 3 groups ( n=20 each) using a random number table method: control+ normal saline group (CN group), chronic stress+ normal saline group (NS group), and chronic stress+ esketamine group (ES group). A chronic stress model was established using a chronic unpredictable stress method. After the end of stress stimulation, esketamine 10 mg/kg was intraperitoneally injected once a day for 7 consecutive days in ES group, and the equal volume of normal saline was given instead in NS group. Y maze test and Morris water maze test were used to assess the learning and memory function after intraperitoneal administration. Venous blood samples were obtained to measure the serum cortisol and reactive oxygen species (ROS) concentrations by enzyme-linked immunosorbent assay. The animals were then sacrificed under anesthesia, the brain was removed and the hippocampal tissue was isolated for examination of the pathological changes in the hippocampal CA1 region and for determination of the ratios of phosphorylated NMDAR (p-NMDAR)/NMDAR, phosphorylated CaMKII (p-CaMKⅡ)/CaMKⅡ, and phosphorylated CREB (p-CREB)/CREB (by Western blot). Results:Compared with CN group, the time spent in the novel arm was significantly shortened, the number of entries into the novel arm was reduced, the escape latency was prolonged, the number of crossing the original platform was reduced, the serum cortisol and ROS concentrations were increased, the p-NMDAR/NMDAR ratio, p-CaMKⅡ/CaMKⅡ ratio and p-CREB/CREB ratio were decreased ( P<0.05), and the pathological changes of neurons were marked in NS group. Compared with NS group, the time spent in the novel arm was significantly prolonged, the number of entries into the novel arm was increased, the escape latency was shortened, the number of crossing the original platform was increased, the serum cortisol and ROS concentrations were decreased, the p-NMDAR/NMDAR ratio, p-CaMKⅡ/CaMKⅡ ratio and p-CREB/CREB ratio were increased ( P<0.05), and the pathological changes of neurons were significantly attenuated in ES group. Conclusions:Esketamine can improve the learning and memory function after chronic stress in developing rats, and the mechanism may be related to reduction of oxidative stress and enhancement of the activity of hippocampal NMDAR-CaMKII-CREB signaling pathway.
9.Role of microRNA-149-5p in resveratrol-induced reduction of lipopolysaccharide-induced cardiomyocyte injury in rats
Jiandong HAO ; Xiaoli WANG ; Wanying CAO ; Yuxuan ZHANG ; Qingqing LI ; Guiping XU
Chinese Journal of Anesthesiology 2024;44(7):861-865
Objective:To evaluate the role of microRNA-149-5p (miR-149-5p) in resveratrol-induced reduction of lipopolysaccharide (LPS)-induced cardiomyocyte injury in rats.Methods:Rat cardiomyocyte cell line H9C2 was cultured and then divided into 5 groups ( n=27 each) using a random number method: control group (C group), LPS group, resveratrol group (RSV group), miR149-5p inhibitor negative control group (LRN group), and miR149-5p inhibitor group (LRI group). A cardiomyocyte injury model was prepared by incubating cells with culture medium containing 10 μg/ml LPS for 24 h. RSV group was incubated with resveratrol (final concentration of 10 μmol/L) for 24 h, followed by incubation with culture medium containing 10 μg/ml LPS for another 24 h. LRN group and LRI group were transfected with miR149-5p inhibitor negative control and miR149-5p inhibitor, respectively, and then the other treatments were similar to those previously described in RSV group. The cell viability was measured by CCK-8 assay, the apoptosis rate by flow cytometry, the concentration of lactate dehydrogenase (LDH) and content of glutathione (GSH) in the supernatant by microplate method, the content of malondialdehyde (MDA) by TBA reaction method, the activity of superoxide dismutase (SOD) by WST-1 method, the level of reactive oxygen species (ROS) by DCFH-DA fluorescent probe, the concentrations of tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) in the supernatant by enzyme-linked immunosorbent assay, and the expression of miR-149-5p by quantitative real-time polymerase chain reaction. Results:Compared with C group, the expression of miR-149-5p was significantly down-regulated, the cell viability was decreased, the concentrations of LDH, TNF-α and IL-6 in supernatant, apoptosis rate, ROS level and MDA content were increased, and the GSH content and SOD activity were decreased in LPS group ( P<0.05). Compared with LPS group, the expression of miR-149-5p was significantly up-regulated, the cell viability was increased, the concentrations of LDH, TNF-α and IL-6 in supernatant, apoptosis rate, ROS level and MDA content were decreased, and the GSH content and SOD activity were increased in RSV group ( P<0.05). Compared with RSV group or LRN group, the expression of miR-149-5p was significantly down-regulated, the cell viability was decreased, the concentrations of LDH, TNF-α and IL-6 in supernatant, apoptosis rate, ROS level and MDA content were increased, and the GSH content and SOD activity were decreased in LRI group ( P<0.05). Conclusions:The mechanism by which resveratrol alleviates LPS-induced cardiomyocyte injury is associated with the up-regulation of miR-149-5p expression and inhibition of cell apoptosis, oxidative stress and inflammatory responses in rats.
10.A multi-model study of serum uric acid/albumin ratio in predicting acute kidney injury after PCI in STEMI patients
Tingting ZHANG ; Longlin WANG ; Guiping WANG
Modern Hospital 2024;24(2):320-324
Objective To explore the potential of serum uric acid/albumin ratio(sUAR)as a predictive model for acute kidney injury(AKI)after PCI in patients with acute ST-segment elevation myocardial infarction(STEMI).Methods A total of 166 STEMI patients admitted to Duchang Hospital from July 2021 to July 2023 were retrospectively selected and divided into two groups:the occurrence group(n =34)and the non-occurrence group(n =132)based on whether AKI occurred after PCI.Base-line data,biochemical indexes,and sUAR were compared between the two groups.Univariate and multivariate logistic regression were utilized to analyze the risk factors for AKI following PCI,and a nomogram prediction model was developed.The ROC curve was developed to analyze the predictive efficiency of the model.Results There were significant differences in age,hypertension,Killip classification,NLR,sUAR,LVEF,contrast agent dose,PCI operation time,and multi-vessel lesions between the two groups(P<0.05).Older age(OR=1.066),Killip grade≥2(OR=7.174),elevated NLR(OR=4.440),increased sUAR(OR=2.071),high contrast agent dose(OR=1.104),and prolonged PCI operation duration(OR=1.044)were identified as the independent risk factors for AKI following PCI(P<0.05).The AUC values for the NLR,sUAR,"NLR+sUAR"and no-mogram prediction models were 0.807(95%CI:0.717~0.897),0.810(95%CI:0.729~0.892),0.877(95%CI:0.808~0.946),0.940(95%CI:0.901~0.979),respectively.Bootstrap(B =1 000)internal validation indicated that the bias-corrected prediction curve was closely aligned with the ideal line,and the nomogram risk prediction model had good predictive a-bility.The decision-making curve analysis revealed that the model's threshold probability ranged from 0.01 to 0.90 with a net re-turn more than 0.Conclusion AKI after PCI in STEMI patients are closely related to such indicators as age,Killip classifica-tion,NLR,sUAR,contrast agent dose,and PCI operation duration.The nomogram prediction model demonstrates higher predic-tive efficiency for AKI after PCI compared to the single model and it holds better clinical application value.

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