NEUROSCIENCE LETTERS
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2017
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IF 2.18
Bing Chun Yan,Hui Shen,Yuanyuan Zhang,Xiaolu Zhu,Jie Wang,Pei Xu,Dan Jiang,Xing Yu
Levetiracetam (LEV), a second-generation antiepileptic drug, is commonly prescribed to treat certain types of seizures. Few studies have investigated the effects of LEV on hippocampal neurogenesis and its related mechanisms. In the present study, we investigated the effects of LEV on cell proliferation and neuronal differentiation in the mouse hippocampal dentate gyrus (DG). We here demonstrate a dose-dependent increase in Ki-67-immunoreactive cells in the subgranular zone of the DG in LEV-treated mice, and doublecortin-immunoreactive cells were also significantly increased in the hippocampal DG of mice treated with LEV. The above results indicate that LEV could improve cell proliferation and neuroblast differentiation in the hippocampus. In addition, we also found that LEV treatment improved superoxide dismutase (SOD)2, catalase and Gpx-1 levels and increased phosphatidylinositol 3-kinase (PI3K) and phosphorylated Akt protein levels in the hippocampus. Further investigation of the molecular mechanisms underlying these effects revealed that PC12 cell was blocked by a pharmacological inhibitor of PI3K (LY294002), and that LEV treatment rapidly activated PI3K/Akt and SOD2, catalase and Gpx-1. In brief, our results indicate that LEV enhanced cell proliferation and neuroblast differentiation by increasing the expression of antioxidants and PI3K and the level of phosphorylated Akt in the mouse hippocampus.
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INTERNATIONAL IMMUNOPHARMACOLOGY
·
2024
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IF 4.8
Kunmei Xie,Feibiao Wang,Yue Yang,Shoujie Pan,Junyao Wang,Nan Xiao,Xinyan Wang,Zhihao Ma,Xiaolong Xu,Zibo Dong
Sepsis-associated acute liver injury (ALI) is a deadly condition resulting from a systemic inflammatory response to liver cell damage and malfunction. Monotropein (MON) belongs to the iris group of compounds extracted from the natural product Mollen dae officinalis radix, which has strong anti-inflammatory and antioxidant pharmacological effects. The purpose of this study was to elucidate the underlying mechanism of MON in the treatment of sepsis ALI. In this study, an in vivo caecal ligation puncture (CLP)-induced ALI model and in vitro LPS-stimulated AML12 cells and RAW264.7 cells model were established. Additionally, a variety of experimental techniques, including CCK8, H&E staining, DHE probe labelling, biochemical, QPCR, and Western blotting and blocking tests, were used to explore the role of MON in ALI. The results showed that MON improved liver morphological abnormalities, oedema, histopathological injury, and elevated ALT and AST, providing a protective effect against ALI. MON reduced CYP2E1 expression, alleviated oxidative stress (downregulation of MDA levels and upregulation of GSH, CAT, and T-AOC levels) and ROS accumulation with the involvement of the NRF2-Keap-1 pathway. MON inhibited inflammation via the TLR4/NF-κB/NLRP3 inflammasome pathway. In addition, it activated the Akt (Ser473)/GSK3β (Ser9)/Fyn pathway and accelerated NRF2 nuclear accumulation; MK-2206 blockade reversed the NRF2 nuclear accumulation and anti-inflammatory function of MON. MON also restricted the mitochondrial apoptosis pathway, a process specifically blocked by MK-2206. In summary, we concluded that MON alleviated septic ALI by restricting oxidative stress, inflammation, and apoptosis via the AKT (Ser473)/GSK3β (Ser9)/Fyn/NRF2 pathway.
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JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
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2018
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IF 2.297
Yunzhi Yin,Yiyue Wang,Jun Zhang,Jing Li,Jingjing Chen,Qi Shen
Docetaxel (DTX) is one kind of well-known anticancer drugs against tumors. GDC0941 was used to inhibit PI3K/Akt signal pathway and improve anti-tumor activity. PLGA-PEG-R7 (poly lactic-co-glycolic acid polyethylene glycol bending with cell penetrating peptide R7)/poly sulfadimethoxine-Folate nanoparticles (R7/PSD-Fol NPs) were made to load DTX and GDC0941 simultaneously. In vitro, the release capacity of DTX and GDC0941 inside nanoparticles was determined and both drugs could release from nanoparticles to 70% within 48h. The result of flow cytometry showed that GDC0941 had no interference on cell uptake and R7/PSD-Fol NPs could enhance MCF-7 cells uptake the most significantly. In cell colony study, GDC0941 could further improve the anti-tumor effect of DTX and inhibit the formation of cell clones on the basis of enhancing the uptake of R7/PSD-Fol NPs. The capability of cell colony formation was as follows: DTX > DTX + GDC0941 > R7 NPs > R7/PSD-Fol NPs. The expression of cell apoptosis proteins treated with R7/PSD-Fol NPs was the lowest. The addition of GDC0941 could decrease the full-length content of apoptotic proteins caspase-3 and caspase-9. In vivo, pharmacokinetic parameters results showed us that GDC0941 had no interference on pharmacokinetic study. Main pharmacokinetic parameters of DTX suspension and R7/PSD-Folate NPs suspension showed significant differences.
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Communications Biology
·
2024
·Vol. 7
·期 1
·1-15
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IF 5.2
Zhang Wen,Cai Shuhui,Qin Lihong,Feng Yaru,Ding Menglei,Luo Zichen,Shan Jinjun,Di Liuqing
Aconiti Lateralis Radix Praeparata ( Fuzi in Chinese) is widely used in the clinical treatment of tumors. This study aims to explore the active fractions and underlying mechanisms of Fuzi in the treatment of non-small cell lung cancer (NSCLC). Fuzi alkaloids (FZA) is prepared and found to inhibit the growth of NSCLC both in vitro and in vivo significantly. A total of 53 alkaloids are identified in FZA by UPLC-Q-TOF-MS. Proteomics experiment show that 238 differentially expressed proteins regulated by FZA are involved in amino acid anabolism, pyrimidine metabolism and PI3K/Akt-mTOR signaling pathway. Metabolomics analyses identify 32 significant differential metabolites which are mainly involved in amino acid metabolism, TCA cycle and other pathways. Multi-omics research combined with molecular biological assays suggest that FZA might regulate glycolysis through PI3K/Akt-mTOR pathway to treat NSCLC. The study lays a foundation for the anti-cancer investigation of Fuzi and provides a possible scientific basis for its clinical application.
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JOURNAL OF ETHNOPHARMACOLOGY
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2025
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IF 5.4
Ya-Nan Tang,Yun-Feng Bai,Ai Dong,Qin-Ling Rao,Hong-Hua Wu,Chun-Guo Wang,Yan-Tong Xu
Ethnopharmacological relevance Kai-Xin-San (KXS) is a classic prescription for treating affective disorders in traditional Chinese medicine (TCM) over millennium. Although antidepressant effects of KXS have been demonstrated in both clinical and preclinical studies, antidepressant constituents and action mechanisms of KXS remain unclear. Aim of the study To reveal antidepressant constituents and action mechanisms of KXS using the method of “fraction-spectrum-effect-mechanism”. Materials and methods Homologous fractions of KXS were isolated through solvent extraction combined with macroporous resin chromatography methods. The quantification of the fractions was performed using chemical chromogenic methods. Antidepressant effects of the homologous fractions were assessed using tail suspension test (TST), forced swimming test (FST) and open field test (OFT) in mice. Two major fractions of total phenols (TP) and total saponins (TS) were chosen for further studies. The constituents of TP and TS were identified using UPLC-Q-Exactive Orbitrap-MS (UPLC-MS) method, and their antidepressant effects were verified on chronic restraint stress (CRS) model in mice by behavioral evaluations including sucrose preference test (SPT), TST, FST and OFT. Network pharmacology was used to predict antidepressant mechanisms of TP and TS based on the homologous constituents determined in UPLC-MS analysis. Proteomic analyses were undertaken with tissues of hippocampus (HP) and prefrontal cortex (PFC) in CRS mice treated by TP and TS. Western blot (WB) was employed to verify the findings in network pharmacology and proteomic analyses. Results Five homologous fractions of essential oils (EO), TP, TS, oligosaccharides (OL) and polysaccharides (PO) were isolated from KXS with homologous contents exceeding 50 %. Results of TST and FST indicated that all the five fractions significantly decreased the immobility time of mice, while OFT results exhibited that their locomotor activities remained unchanged. A total of 50 constituents and 114 constituents were identified in the TP and TS, respectively. CRS tests demonstrated that both TP and TS significantly increased the percent of sucrose consumption and decreased the immobility time in the TST and FST, without affecting their locomotor activities. Results of both network pharmacology and proteomic analyses primarily pointed to similar contents highly related to depression. GO analysis on TP and TS principally enriched in synaptic structures and functions, as well as neural metabolic and gene expression processes. KEGG analysis on TP and TS principally enriched in pathways of neurodegeneration-multiple diseases, as well as neurotrophin signaling pathway in HP and PFC. Results of WB verified that TP and TS significantly reversed the decrease in signature proteins of synaptic plasticity including presynaptic SYN1, postsynaptic PSD95 and GRIA1, as well as the underlying mechanism of BDNF/TrkB/Akt pathway in the HP and PFC induced by CRS. Conclusion This is the first study on antidepressant constituents and action mechanisms of KXS guided by the method of “fraction-spectrum-effect-mechanism”. Albeit the findings are still preliminary, it provides an example in methodology for unraveling the complicated chemical system and action mechanisms of TCM prescriptions.
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COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
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2025
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IF 4.3
Qingyan Wang,Yunjie Su,Qian Yang,Trust Beta,Fei Shen,Qin Liu
Bisphenol A (BPA) is a typical endocrine disrupting chemical widely distributed in the environment and in food systems. The adverse effects of BPA on reproductive health have posed major concerns worldwide. The aim of this study was to determine the potential of epigallocatechin gallate (EGCG) to protect against BPA-induced male reproductive toxicity and investigate the underlying protective mechanism. The protective effects of EGCG on BPA-induced reproductive toxicity were investigated using male zebrafish model. The results showed that EGCG alleviated BPA-induced developmental toxicity of F1 generation of zebrafish, reversed testis disorder and combated the blood-testis barrier (BTB) damage caused by BPA in zebrafish. In order to unravel the underlying mechanism, TM4 cell - constructed BTB model was used for further study. The results indicated that EGCG counteracted the damage induced by BPA on the integrity of BTB model and reduced the autophagy caused by BPA. Furthermore, EGCG effectively inhibited the BPA-induced upregulation of the expression level of AMPK (p-AMPKα/AMPKα), significantly restored the BPA-mediated downregulation of the expression levels o。f p-mTOR/mTOR, p-AKT/AKT and Raptor. The results suggested that EGCG mitigated the BPA-induced male reproductive toxicity through maintaining the integrity of BTB by inhibiting the autophagy mediated by AMPK/AKT/mTOR signaling pathway. This study provided a strategy for combating the BPA-induced reproductive toxicity using a well-known bioactive component as a potential therapeutic approach.
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MOLECULAR MEDICINE
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2025
·Vol. 31
·期 1
·1-20
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IF 6.4
Gao Bai,Jing Yuchen,Li Xi,Cong Shuyan
Background Mitochondrial dysfunction and neuronal damage are major sign of cytopathology in Huntington’s disease (HD), a neurodegenerative disease. Ubiquitin specific peptidase 11 (USP11) is a deubiquitinating enzyme involved in various physiological processes through regulating protein degradation. However, its specific role in HD is unclear.Methods To interfere with USP11 expression, adeno-associated viruses 2 containing USP11-specific shRNA were injected into the bilateral striatum of 12-week-old R6/1 and WT mice. In vitro, the inducible PC12 cell model of HD was used in which the expression of an N-terminal truncation of huntingtin, with either wild type (Q23) or expanded polyglutamine (Q74) can be induced by the doxycycline. USP11 was knocked down to study its role in HD. The protein expression patterns in Q74 cells were quantified by label-free proteomics to further explore the target protein of USP11. Detecting the association between USP11 and Phosphatase and Tensin Homolog (PTEN) through Co-IP.Results Herein, USP11 was found to be upregulated in the striatum of R6/1 mice (an HD model with gradual development of symptoms) in an age-dependent manner. The spontaneous HD was alleviated by silencing USP11, as evidenced by improved locomotor activity and spatial memory, attenuated striatal atrophy in R6/1 mice, reduced accumulation of mutant huntingtin protein, and restored mitochondrial function in vitro and in vivo. The results of label-free proteomics revealed a significant change in the protein expression profile. Through functional enrichment, we focused on PTEN, known as a negative regulator of the AKT pathway. We demonstrated that USP11 downregulation promoted ubiquitination modification of PTEN and activated the AKT pathway, and PTEN overexpression reversed the effects of USP11 knockdown.Conclusion sCollectively, USP11 knockdown protects R6/1 mouse neurons from oxidative stress by alleviating mitochondrial dysfunction, thereby preventing the HD progression. This is achieved by inhibiting PTEN expression, which in turn activates the AKT pathway. This study suggests that USP11-PTEN-AKT signaling pathway may be a new attractive therapeutic target for HD.
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HEREDITAS
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2025
·Vol. 162
·期 1
·232
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IF 2.5
Xiaohui Yu,Jie Li,Jiangqiao Zhou
Background Coptisine (COP) is a natural compound extracted from Rhizoma Coptidis , and it represses the malignant biological behaviors of bladder cancer cells. However, the underlying molecular mechanism has not been fully elucidated. The aim of this study was to clarify the downstream mechanism by which COP treats bladder cancer. Materials and methods SwissTargetPrediction, STITCH, SymMap, ETCM, TCMSP, CTD databases were used to collect the related targets of COP. GeneCards, DisGeNET, TTD and OMIM databases were used to obtain the related targets of bladder cancer. A Venn diagram was used to identify the potential targets of COP in bladder cancer treatment. The protein-protein interaction network was constructed using STRING database, and Cytoscape 3.9.0 software was used to screen the hub targets. The binding relationship between COP and the hub targets was verified by molecular docking and molecular dynamics simulation. After the bladder cell lines T24 and BIU-87 were treated with different doses of COP, the regulatory effects of COP on PI3K/AKT pathway were investigated with western blotting. Additionally, the tumor-suppressive properties of COP on bladder cancer cells were validated with tumorigenesis model and metastasis model in nude mice. Results RAC-alpha serine/threonine-protein kinase 1 (AKT1), glycogen synthase kinase 3 beta (GSK3B), caspase-3 (CASP3), tumor necrosis factor (TNF) and cyclin D1 (CCND1) were identified as the main hub targets of COP in bladder cancer treatment. PI3K/AKT pathway was predicted to be a crucial pathway regulated by COP. The binding affinities between COP and AKT1, GSK3B, CASP3, TNF and CCND1 were high. COP treatment markedly repressed the phosphorylation level of ERK1/2, AKT1, PI3K p85 and mTOR in T24 and BIU-87 cells, and repressed the tumorigenesis and lung/liver metastasis of T24 cells in vivo. Conclusion COP may be a natural inhibitor for AKT1, GSK3B, CASP3, TNF and CCND1. COP represses PI3K/AKT pathway to suppress the progression of bladder cancer.
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Stem Cells Translational Medicine
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2025
·Vol. 14
·期 3
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IF 4.9
Zhao Zhi-Meng,Ding Jia-Ming,Li Yu,Wang Da-Chuan,Kuang Ming-Jie
Glucocorticoid-induced osteoporosis (GIOP), the most common cause of secondary osteoporosis, is characterized by significant bone loss, decreased bone quality, and increased fracture risk. The current treatments for GIOP have several drawbacks. Exosomes are vital for cellular processes. However, very few studies have focused on using human umbilical cord mesenchymal stem cell-derived exosomes (hUCMSC-EXOs) for GIOP treatment. In vitro and in vivo dexamethasone was used to evaluate the therapeutic effects of hUCMSC-EXOs on GIOP. CCK-8 and EdU assays were used to evaluate cell viability and proliferation, respectively. We conducted an alkaline phosphatase activity assay, alizarin red staining, Western blotting, and real-time PCR to detect the effect on osteogenesis. TMT-labeled quantitative proteomic and bioinformatic analyses were performed. Furthermore, we performed Western blotting, immunofluorescence, reactive oxygen species assays, and lipid peroxidation assays to investigate the regulatory mechanism by which hUCMSC-EXOs affect cell proliferation and osteogenic differentiation. The in vivo effects of hUCMSC-EXOs were evaluated using micro-CT, hematoxylin, and eosin staining, and immunohistochemical staining. We found that hUCMSC-EXOs reversed the inhibitory effects of glucocorticoids on human bone marrow stromal cell (hBMSC) proliferation and osteogenic differentiation and demonstrated that hUCMSC-EXOs reversed GIOP via the PI3K/AKT signaling pathway, inhibiting lipid peroxidation in vitro and in vivo. HUCMSC-EXOs promote hBMSC osteogenesis through the PI3K/AKT signaling pathway, inhibit ferroptosis, and have therapeutic potential for GIOP in mice.
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CURRENT NEUROVASCULAR RESEARCH
·
2021
·Vol. 18
·期 1
·102-112
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IF 1.99
Chu Miao,Liu Huimiao,Xiong Zhaohui,Ju Chaojuan,Zhao Lina,Li Kangning,Tian Shiqi,Gu Ping
Background: Parkinson’s disease (PD) is a neurodegenerative disorder caused by the progressive loss of dopaminergic neurons. Canopy fibroblast growth factor signaling regulator 2 (CNPY2) is down-regulated in this disease, but its functions are unknown. Objective: This study
investigates the effects and regulation of CNPY2 in the apoptosis of neurons in PD. Methods: We established a PD model in vivo by a five consecutive days-injection of 1-methyl-4- phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP) to mice. In vitro, the human SH-SY5Y neuroblastoma cells, after
differentiation, were treated with 1-Methyl-4-phenylpyridinium iodide (MPP+) for modeling. The cells were transfected with a recombinant vector overexpressing CNPY2 followed by MPP+ treatment. Expression of CNPY2 and proteins related to apoptosis was detected by real-time PCR, western blot,
or immunofluorescence staining. The ROS level and mitochondrial membrane potential were determined by flow cytometry. Cell viability and apoptosis were measured by MTT assay and TUNEL staining. Results: CNPY2 level was down-regulated both in the brain and retina of PD mice and also inhibited
in neurons by MPP+ in vitro. Overexpression of CNPY2 repressed the level of Bax and cleaved caspase-3, enhanced Bcl-2 level, and promoted neurite length under MPP+ treatment. CNPY2 overexpression reduced the accumulation of ROS and mitochondria dysfunction in neurons. The AKT/ GSK3β signaling
pathway was activated by overexpressed CNPY2 to inhibit MPP+-induced neuronal apoptosis, which was confirmed using an AKT inhibitor MK-2206 2HCl. Conclusion: CNPY2 alleviates oxidative stress, mitochondria dysfunction, and apoptosis of neurons induced by MPP+ by activating the AKT/ GSK3β
signaling pathway.
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JOURNAL OF ETHNOPHARMACOLOGY
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2021
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IF 4.36
Min Liu,Hongqiu Zhu,Ying Zhu,Xiaodan Hu
Ethnopharmacological relevance Guizhi Fuling Wan (GFW) is a traditional Chinese medicine used to remove blood stasis and dissipate phlegm for treating gynecological diseases that was invented by Zhang Zhongjing in the Eastern Han dynasty. In recent years, GFW has been widely used to treat patients with polycystic ovary syndrome (PCOS). Clinical and animal studies have shown that it is effective in the treatment of PCOS, but its mechanism is unknown. Generally, it works by regulating autophagy via the PI3K/AKT/mTOR signaling pathway. Aim of the study This study investigated the effects and mechanism of GFW in PCOS rats with insulin resistance (IR) in order to provide better understanding of its observed clinical effects and a theoretical basis for the study of traditional Chinese medicine. Materials and methods Eighty-four female Sprague–Dawley rats were randomly divided into seven groups (n = 12 per group): 1) control, 2) PCOS model, 3) low-dose GFW, 4) medium-dose GFW, 5) high-dose GFW, 6) metformin , and 7) medium-dose GFW plus LY294002 . In all non-control groups, we induced PCOS through daily letrozole combined with intragastric high-fat emulsion for 21 days. After treatment, rats were sacrificed and serum follicle-stimulating hormone (FSH), testosterone (T), progesterone , luteinizing hormone (LH), 17β-estradiol, fasting insulin (FINS), and fasting plasma glucose levels were measured by enzyme-linked immunosorbent assay (ELISA). The LH/FSH ratios and HOMA-IR values were calculated. Ovarian morphology was observed by hematoxylin and eosin staining, and all follicles were counted under a microscope. MDC-positive vesicles were used as markers to detect autophagy, and the expression levels of p62, Beclin1 , and LC3-II were examined by immunostaining. Western blotting was used to measure PI3K/AKT/mTOR pathway activation, granulosa cell apoptosis , and autophagy. Results Compared with the PCOS model group, GFW-treated rats had less atretic and cystic follicles, and more mature follicles and corpus lutea. The GFW-treated rats had lower serum T, LH, and FINS levels than the PCOS model group, as well as lower LH/FSH ratios and HOMA-IR values. GFW treatment resulted in significantly reduced levels of cleaved-Caspase-3, cleaved-Caspase-9, BAX, Beclin1, Atg5, and LC3-II. Phosphorylation of PI3K, AKT, and mTOR was significantly higher in GFW-treated rats compared with the PCOS model group. The phosphorylation of PI3K, AKT, and mTOR was decreased with the use of a PI3K antagonist. Conclusions Our results indicate that GFW inhibited granulosa cell autophagy and promoted follicular development to attenuate ovulation disorder in PCOS-IR rats. This was associated with activation of the PI3K/AKT/mTOR signaling pathway.
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Heliyon
·
2024
·
IF 3.4
Yingjie Wu,Mingxiang Fan,Shixiang Tan,Qiucheng Guo,Hegui Xu
Objective To examine and talk about the mechanism of the Huoxue Jiegu compound capsule's effects on osteoblasts and the PI3K/Akt/mTOR signal pathway in rabbits suffering from tibial fractures. Method In vitro, CCK8 was used to assess the survival rates. Alizarinred staining was used to evaluate mineralized nodules. ALP staining was used to observe the osteoblasts. qRT-PCR was used to determine the mRNA expression of the bone formation-related factors BMP-2, bFGF, and TGF-β. In vivo, three groups of nine male rabbits each were randomly assigned to three groups: the Model group, the Huoxue Jiegu compound capsule group (HXJGC group), and the inhibitor group (HXJGC+3-MA), four weeks following the intervention. HE staining was employed to examine the rabbits' bone histology. immunohistochemistry was employed to examine the relative expression of the proteins VEGF and LC3-II. Western Blot was utilized to examine the relative expression of the proteins Beclin-1, LC3-II/Ⅰ, p62, p-PI3K, p-AKT, and p-mTOR. Results Compared to the control group, the medium- and high-dose groups exhibited considerably higher survival rates ( P < 0.05), as well as enhanced cell proliferation and differentiation ( P < 0.05) and more pronounced mineralized nodules. ( P < 0.05), but the low-dose groups showed no appreciable variation. In the low, medium, and high-dose groups, there was a substantial reduction in the expression of bFGF mRNA, whereas the levels of BMP-2 and TGF-β mRNA were considerably higher than in the control group ( P < 0.05). In vivo, after four weeks of treatment, the model control group and inhibito group had a large amount of fibrous hyperplasia accompanied by bleeding and a small amount of inflammatory cell infiltration. But in the HXJGC group, new cartilage appeared, and the surface of the cartilage was smooth and flat. Beclin-1 and LC3-II/I expression in the HXJGC+3 MA group was significantly lower than in the HXJGC and Model groups ( P < 0.05). The HXJGC group showed lower p62 expression than the HXJGC+3 MA and model groups ( P < 0.05). The HXJGC group exhibited significantly reduced levels of p-PI3K, p-AKT, and p-mTOR expression in comparison to HXJGC+3 MA groups ( P < 0.05). Conclusion Rabbits with tibial fractures can be treated with HXJGC, which can control the expression of the PI3K/Akt/mTOR signal pathway. It can promote the differentiation and maturation of osteoblasts at the fracture end of rabbits, accelerate the recovery of fractures, and achieve the purpose of treating the disease.
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