1.Interventional Effect and Mechanisms of Renqing Mangjue on MNNG-induced Malignant Transformation of Gastric Mucosal Epithelial Cells
Peiping CHEN ; Fengyu HUANG ; Xinzhuo ZHANG ; Xiangying KONG ; Ziqing XIAO ; Yanxi LI ; Xiaohui SU ; Na LIN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(8):69-77
ObjectiveThis study aimed to investigate the intervention effect of Renqing Mangjue on the malignant transformation of gastric mucosal epithelial cells induced by N-methyl-N′-nitro-N-nitrosoguanidine (MNNG) and to explore its molecular mechanism in preventing precancerous lesions of gastric cancer based on the cyclic guanosine monophosphate (cGMP)/protein kinase G (PKG)/mitogen-activated protein kinase (MEK)/extracellular signal-regulated kinase (ERK) signaling pathway. MethodsHuman gastric mucosal epithelial cells (GES-1) were initially induced by MNNG to establish a precancerous cell model (MC cells). The effective concentration of MNNG for inducing malignant transformation in GES-1 cells was screened using the cell proliferation activity decection (CCK-8) assay, and the effective concentration of Renqing Mangjue for inhibiting the proliferation of transformed GES-1 cells was also determined. GES-1 cells were divided into a blank control group, a model group, and treatment groups with Renqing Mangjue at concentrations of 1, 3, 10, and 30 mg·L-1. Furthermore, the effects of Renqing Mangjue on the migratory ability and epithelial-mesenchymal transition (EMT) characteristics of GES-1 malignant transformed cells were evaluated using Transwell migration assays, wound healing assays, and real-time quantitative reverse transcription polymerase chain reaction (Real-time PCR). Additionally, candidate chemical components and target sites of Renqing Mangjue were obtained from the TCMIP v2.0 database, and disease targets at various stages of gastric cancer precursors were sourced from the Gene Expression Omnibus (GEO) database. Pathway enrichment analysis was performed using the Metascape database to predict the potential mechanisms of action of Renqing Mangjue. Finally, the protective mechanism of Renqing Mangjue against gastric cancer precursors was validated through Western blot analysis. ResultsAt a concentration of 20 μmol·L-1, MNNG exhibited an inhibition rate of approximately 50% on GES-1 cells (P<0.01), and at this concentration, the GES-1 cells displayed biological characteristics indicative of malignant transformation. In contrast, Renqing Mangjue had no significant effect on the proliferation of normal GES-1 cells, but significantly inhibited the proliferation of MC cells (P<0.01) and markedly reduced their migratory capacity (P<0.01). Moreover, it also increased the mRNA expression level of E-cadherin during the EMT process (P<0.05), while inhibiting the expression of both N-cadherin and the transcription factor Snail mRNA (P<0.05, P<0.01). Network predictions suggested that Renqing Mangjue may prevent gastric cancer precursors through modulating the cGMP/PKG and MAPK/ERK signaling pathways. Furthermore, Western blot results indicated that Renqing Mangjue upregulated the expression of PKG and NPRB (B-type natriuretic peptide receptor) proteins in the cGMP/PKG pathway (P<0.01), while downregulating the expression of the downstream proteins MEK and ERK (P<0.05, P<0.01). ConclusionIn summary, Renqing Mangjue can prevent gastric cancer precursors by inhibiting the proliferation and migration of malignant transformed GES-1 cells, thereby delaying the EMT process. The underlying mechanisms may be related to the activation of the cGMP/PKG pathway and the inhibition of the MEK/ERK signaling pathway.
2.Research hotspots in nutrition for patients with head and neck cancer from 2014 to 2024
WANG Shuai ; LIU Manfeng ; AN Na ; WANG Dikan ; HUANG Qiuyu ; LIN Zhumei
Journal of Prevention and Treatment for Stomatological Diseases 2025;33(6):509-518
Objective:
To understand the current status, international cooperation, research hotspots, and development trends of nutritional studies on patients with head and neck cancer from 2014 to 2024, and to predict future research trends.
Methods:
The Web of Science Core Collection database was searched to retrieve nutritional studies on patients with head and neck cancer from January 2014 to March 2024. The type of studies were “articles,” the language was English, CiteSpace 6.1 R6 software was used to conduct the bibliometric analysis, and the results were visualized to form a scientific knowledge map.
Results:
A total of 1 528 documents were retrieved, with a linear increase in the number of annual publications. The country with the highest number of publications was the United States, and the institution with the highest number of publications was the University of Queensland, with closer collaboration between authors and institutions. The most frequently cited publication was a set of nutrition guidelines, and the highest-impact articles were mainly concerned with performing percutaneous endoscopic gastrostomy. Keyword analysis showed that quality of life, radiotherapy, and weight loss were the keywords of highest interest. The keyword cluster analysis resulted in 17 clusters, which were divided into five main categories: head and neck cancer, treatment, outcome results, intervention modalities, and rehabilitation. Body composition, enteral nutrition, and accelerated postoperative rehabilitation were persistent research hotspots. Keyword highlighting revealed that “enhanced recovery after surgery” has been the focus of research in the last two years, with “index” and “model” emerging as theme words.
Conclusion
The number of publications in the literature related to nutrition for patients with head and neck cancer has increased annually over the past 10 years. The research hotspots mainly focus on the quality of life and weight loss during radiotherapy, the content and application prospect of body composition assessment, different modes of nutritional support interventions and enteral nutritional tube feeding routes, and perioperative nutritional management in enhanced recovery after surgery. The potential clinical value of preoperative nutritional intervention under the concept of enhanced recovery and the construction of new types of nutritional index are the trends of future research.
3.Effect of Yuxuebi Tablets on mice with inflammatory pain based on GPR37-mediated inflammation resolution.
Ying LIU ; Guo-Xin ZHANG ; Xue-Min YAO ; Wen-Li WANG ; Ao-Qing HUANG ; Hai-Ping WANG ; Chun-Yan ZHU ; Na LIN
China Journal of Chinese Materia Medica 2025;50(1):178-186
In order to investigate whether the effect of Yuxuebi Tablets on the peripheral and central inflammation resolution of mice with inflammatory pain is related to their regulation of G protein-coupled receptor 37(GPR37), an inflammatory pain model was established by injecting complete Freund's adjuvant(CFA) into the paws of mice, with a sham-operated group receiving a similar volume of normal saline. The mice were assigned randomly to the sham-operated group, model group, ibuprofen group(91 mg·kg~(-1)), and low-, medium-, and high-dose groups of Yuxuebi Tablets(60, 120, and 240 mg·kg~(-1)). The drug was administered orally from days 1 to 19 after modeling. Von Frey method and the hot plate test were used to detect mechanical pain thresholds and heat hyperalgesia. The levels of interleukin-10(IL-10) and transforming growth factor-beta(TGF-β) in the spinal cord were quantified using enzyme-linked immunosorbent assay(ELISA), and the mRNA and protein expression of GPR37 in the spinal cord was measured by real-time quantitative reverse transcription PCR(qRT-PCR) and Western blot. Additionally, immunofluorescence was used to detect the expression of macrosialin antigen(CD68), mannose receptor(MRC1 or CD206), and GPR37 in dorsal root ganglia, as well as the expression of calcium-binding adapter molecule 1(IBA1), CD206, and GPR37 in the dorsal horn of the spinal cord. The results showed that compared with those of the sham-operated group, the mechanical pain thresholds and hot withdrawal latency of the model group significantly declined, and the expression of CD68 in the dorsal root ganglia and the expression of IBA1 in the dorsal horn of the spinal cord significantly increased. The expression of CD206 and GPR37 significantly decreased in the dorsal root ganglion and dorsal horn of the spinal cord, and IL-10 and TGF-β levels in the spinal cord were significantly decreased. Compared with those of the model group, the mechanical pain thresholds and hot withdrawal latency of the high-dose group of Yuxuebi Tablets significantly increased, and the expression of CD68 in the dorsal root ganglion and IBA1 in the dorsal horn of the spinal cord significantly decreased. The expression of CD206 and GPR37 in the dorsal root ganglion and dorsal horn of the spinal cord significantly increased, as well as IL-10 and TGF-β levels in the spinal cord. These findings indicated that Yuxuebi Tablets may reduce macrophage(microglial) infiltration and foster M2 macrophage polarization by enhancing GPR37 expression in the dorsal root ganglia and dorsal horn of the spinal cord of CFA-induced mice, so as to improve IL-10 and TGF-β levels, promote resolution of both peripheral and central inflammation, and play analgesic effects.
Inflammation/genetics*
;
Pain/genetics*
;
Drugs, Chinese Herbal/administration & dosage*
;
Animals
;
Mice
;
Freund's Adjuvant/pharmacology*
;
Ibuprofen
;
Pain Threshold/drug effects*
;
Hyperalgesia/genetics*
;
Ganglia, Spinal
;
Interleukin-10/genetics*
;
Transforming Growth Factor beta/genetics*
;
Reverse Transcriptase Polymerase Chain Reaction
;
Tablets
;
Receptors, G-Protein-Coupled
4.Mechanism of Colquhounia Root Tablets against diabetic kidney disease via RAGE-ROS-PI3K-AKT-NF-κB-NLRP3 signaling axis.
Ming-Zhu XU ; Zhao-Chen MA ; Zi-Qing XIAO ; Shuang-Rong GAO ; Yi-Xin YANG ; Jia-Yun SHEN ; Chu ZHANG ; Feng HUANG ; Jiang-Rui WANG ; Bei-Lei CAI ; Na LIN ; Yan-Qiong ZHANG
China Journal of Chinese Materia Medica 2025;50(7):1830-1840
This study aimed to explore the therapeutic mechanisms of Colquhounia Root Tablets(CRT) in treating diabetic kidney disease(DKD) by integrating biomolecular network mining with animal model verification. By analyzing clinical transcriptomics data, an interaction network was constructed between candidate targets of CRT and DKD-related genes. Based on the topological eigenvalues of network nodes, 101 core network targets of CRT against DKD were identified. These targets were found to be closely related to multiple pathways associated with type 2 diabetes, immune response, and metabolic reprogramming. Given that immune-inflammatory imbalance driven by metabolic reprogramming is one of the key pathogenic mechanisms of DKD, and that many core network targets of CRT are involved in this pathological process, receptor for advanced glycation end products(RAGE)-reactive oxygen species(ROS)-phosphatidylinositol 3-kinase(PI3K)-protein kinase B(AKT)-nuclear factor-κB(NF-κB)-NOD-like receptor family pyrin domain containing 3(NLRP3) signaling axis was selected as a candidate target for in-depth research. Further, a rat model of DKD induced by a high-sugar, high-fat diet and streptozotocin was established to evaluate the pharmacological effects of CRT and verify the expression of related targets. The experimental results showed that CRT could effectively correct metabolic disturbances in DKD, restore immune-inflammatory balance, and improve renal function and its pathological changes by inhibiting the activation of the RAGE-ROS-PI3K-AKT-NF-κB-NLRP3 signaling axis. In conclusion, this study reveals that CRT alleviates the progression of DKD through dual regulation of metabolic reprogramming and immune-inflammatory responses, providing strong experimental evidence for its clinical application in DKD.
Animals
;
Diabetic Nephropathies/metabolism*
;
Receptor for Advanced Glycation End Products/genetics*
;
NF-kappa B/genetics*
;
Signal Transduction/drug effects*
;
Rats
;
NLR Family, Pyrin Domain-Containing 3 Protein/genetics*
;
Proto-Oncogene Proteins c-akt/genetics*
;
Drugs, Chinese Herbal/administration & dosage*
;
Male
;
Phosphatidylinositol 3-Kinases/genetics*
;
Reactive Oxygen Species/metabolism*
;
Humans
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Plant Roots/chemistry*
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Rats, Sprague-Dawley
;
Tablets/administration & dosage*
5.Identification and expression analysis of seed dehydration tolerance and PLD gene family in Panax medicinal plants.
Chao-Lin LI ; Min HUANG ; Na GE ; Qing-Yan WANG ; Jin-Shan JIA ; Ting LUO ; Jin-Yan ZHANG ; Ping ZHOU ; Jun-Wen CHEN
China Journal of Chinese Materia Medica 2025;50(12):3307-3321
Panax species are mostly valuable medicinal plants. While some species' seeds are sensitive to dehydration, the dehydration tolerance of seeds from other Panax species remains unclear. The phospholipase D(PLD) gene plays an important role in plant responses to dehydration stress. However, the characteristics of the PLD gene family and their mechanisms of response to dehydration stress in seeds of Panax species with different dehydration tolerances are not well understood. This study used seeds from eight Panax species to measure the germination rates and PLD activity after dehydration and to analyze the correlation between dehydration tolerance and seed traits. Bioinformatics analysis was also conducted to characterize the PnPLD and PvPLD gene families and to evaluate their expression patterns under dehydration stress. The dehydration tolerance of Panax seeds was ranked from high to low as follows: P. ginseng, P. zingiberensis, P. quinquefolius, P. vietnamensis var. fuscidiscus, P. japonicus var. angustifolius, P. japonicus, P. notoginseng, and P. stipuleanatus. A significant negative correlation was found between dehydration tolerance and seed shape(three-dimensional variance), with flatter seeds exhibiting stronger dehydration tolerance(r=-0.792). Eighteen and nineteen PLD members were identified in P. notoginseng and P. vietnamensis var. fuscidiscus, respectively. These members were classified into five isoforms: α, β, γ, δ, and ζ. The gene structures, subcellular localization, physicochemical properties, and other characteristics of PnPLD and PvPLD were similar. Both promoters contained regulatory elements associated with plant growth and development, hormone responses, and both abiotic and biotic stress. During dehydration, the PLD enzyme activity in P. notoginseng seeds gradually increased as the water content decreased, whereas in P. vietnamensis var. fuscidiscus, PLD activity first decreased and then increased. The expression of PLDα and PLDδ in P. notoginseng seeds initially increased and then decreased, whereas in P. vietnamensis var. fuscidiscus, the expression of PLDα and PLDδ consistently decreased. In conclusion, the dehydration tolerance of Panax seeds showed a significant negative correlation with seed shape. The dehydration tolerance in P. vietnamensis var. fuscidiscus and dehydration sensitivity of P. notoginseng seeds may be related to differences in PLD enzyme activity and the expression of PLDα and PLDδ genes. This study provided the first systematic comparison of dehydration tolerance in Panax seeds and analyzed the causes of tolerance differences and the optimal water content for long-term storage at ultra-low temperatures, thus providing a theoretical basis for the short-term and ultra-low temperature long-term storage of medicinal plant seeds with varying dehydration tolerances.
Seeds/metabolism*
;
Panax/physiology*
;
Plant Proteins/metabolism*
;
Gene Expression Regulation, Plant
;
Phospholipase D/metabolism*
;
Plants, Medicinal/enzymology*
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Germination
;
Multigene Family
;
Water/metabolism*
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Dehydration
;
Phylogeny
6.Effects and mechanisms of Yuxuebi Tablets combined with ibuprofen in treating chronic musculoskeletal pain through "integrated regulation of inflammation and pain-related oxylipins".
Ao-Qing HUANG ; Wen-Li WANG ; Guo-Xin ZHANG ; Ying LIU ; Na LIN ; Chun-Yan ZHU
China Journal of Chinese Materia Medica 2025;50(13):3763-3777
This study adopted a three-dimensional "effect-dose-mechanism" evaluation system to screen the optimal regimen of Yuxuebi Tablets(YXB) combined with ibuprofen(IBU) for chronic musculoskeletal pain(CMP) intervention and elucidate its pharmacological mechanism, so as to provide a scientific basis for the clinical application of the regimen. The experiments were conducted using 8-week-old ICR mice, which were randomly divided into sham operation(sham) group, model(CFA) group, IBU group, YXB group, stasis paralysis tablets combined with ibuprofen low-dose group(IBU-L-YXB), stasis paralysis combined with ibuprofen high-dose group(IBU-H-YXB), stasis paralysis tablets combined with ibuprofen high-dose with ibuprofen discontinuation on the 10th day of administration(IBU-10-YXB), and stasis paralysis tablets combined with ibuprofen high-dose with ibuprofen halving on the 10th day of administration(IBU-1/2-YXB) group. An animal model was established using the CFA plantar injection method. On D0(the second day post-modeling), the success of model establishment was assessed, followed by continuous drug administration for 18 consecutive days from D1 to D18. During this period, mechanical pain threshold was measured by the Von Frey test; thermal hyperalgesia was detected by the hot plate test, and depression-like behavior was observed by the tail suspension test. After treatment, peripheral blood was collected from all groups for complete blood biochemical analysis, and the injected feet of the sham, CFA, IBU, YXB, IBU-YXB, and IBU-10-YXB groups were subjected to oxylipin metabolomics analysis. Immunofluorescence double staining was further performed to detect the co-expression of key oxylipin metabolic enzymes(COX2, LTA4H, and 5/12/15-LOX) and macrophage marker CD68 in the sham, CFA, IBU, and YXB-L/M/H groups. Subsequently, confirmatory analysis of positive indicators was conducted in the sham, CFA, IBU, YXB, IBU-YXB, and IBU-10-YXB groups. On D6(acute phase), mechanical pain sensitivity data showed that compared with the CFA group, only the three combination groups(IBU-YXB, IBU-10-YXB, and IBU-1/2-YXB) exhibited significantly increased paw withdrawal thresholds. On D17(chronic phase), only the IBU-10-YXB group showed a mechanical pain threshold significantly higher than all other monotherapy and combination groups. On D17, thermal pain data showed that compared with the CFA group, all groups except IBU-1/2-YXB had significantly prolonged paw withdrawal latency. On D18, tail suspension data showed that compared with the CFA group, the YXB, IBU-YXB, and IBU-10-YXB groups had significantly reduced immobility time. In summary, IBU-10-YXB stably improved the core symptoms of acute and chronic inflammatory pain. Complete blood count data showed that compared with the sham group, the CFA group had significantly increased mean platelet volume(MPV), while compared with the CFA group, the IBU-YXB and IBU-10-YXB groups had significantly reduced MPV. Moreover, the platelet distribution width(PDW) of the IBU-10-YXB group was further reduced compared with the CFA group. These data suggest that the IBU-10-YXB combination regimen has superior effects on inflammation and blood circulation improvement compared with other treatment groups. At the mechanistic level, each treatment group differentially regulated pro-inflammatory and pro-resolving oxylipin(SPM). Specifically, compared with the CFA group, the IBU and IBU-YXB groups significantly inhibited the synthesis of the prostaglandin family downstream of COX2, reducing pro-inflammatory oxylipins PGD2 and 6-keto-PGF1α but inhibiting PGE1 and PGE2, which played positive roles in peripheral circulation, vasodilation, and inflammation resolution. Compared with the CFA group, the YXB group tended to inhibit the pro-inflammatory oxylipin LTB4 downstream of LTA4H and increase SPMs such as LXA4. The IBU-10-YXB group bidirectionally regulated pro-inflammatory oxylipins and SPMs. Compared with IBU, IBU-10-YXB significantly inhibited the pro-inflammatory mediator 5-HETE. Meanwhile, IBU-10-YXB broadly upregulated SPMs, as evidenced by significant upregulation of LXA4 compared with the CFA group, significant upregulation of LXA5 compared with the IBU and IBU-YXB groups, significant upregulation of RvD1 compared with the CFA group and all other treatment groups, and significant upregulation of RvD5 compared with the sham group. Immunofluorescence double staining results were as follows: compared with the CFA group, the IBU group specifically inhibited the oxylipin metabolic enzyme COX2. In the YXB group, COX2, LTA4H, and 5/12-LOX were significantly inhibited. Within the optimal analgesic dose range, YXB's inhibitory effects on COX2 and LTA4H were dose-dependent, while its inhibitory effects on 5/12-LOX were inversely dose-dependent. The two combination groups(IBU-YXB and IBU-10-YXB) inhibited COX2 and LTA4H without significantly affecting 5-LOX, while IBU-10-YXB further significantly inhibited 12-LOX. These results suggest that the IBU-10-YXB combination regimen effectively maintains stable inhibition of COX2, LTA4H, and 12-LOX while enhancing 5-LOX expression. This combinatorial strategy effectively suppresses pro-inflammatory oxylipins and promotes SPM biosynthesis, overcoming IBU's analgesic ceiling effect and its blockade of pain resolution pathways while compensating for YXB's inability to effectively intervene in acute pain and inflammation. Therefore, it achieves more stable anti-inflammatory, analgesic, and antidepressant effects.
Animals
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Ibuprofen/administration & dosage*
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Mice
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Mice, Inbred ICR
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Drugs, Chinese Herbal/administration & dosage*
;
Male
;
Musculoskeletal Pain/immunology*
;
Tablets
;
Humans
;
Chronic Pain/metabolism*
;
Drug Therapy, Combination
;
Disease Models, Animal
7.Effective Salvage Mobilization of Peripheral Blood Stem Cells with High-Dose Etoposide in Newly Diagnosed Multiple Myeloma Patients Who Failed Initial Mobilization with High-Dose Cyclophosphamide.
Yue-Qi WANG ; Shi-Hua ZHAO ; Yi MA ; Xi-Lin CHEN ; Shun-Zong YUAN ; Na-Na CHENG ; Guang-Ning SHI ; Wen-Rong HUANG ; Xiu-Bin XIAO
Journal of Experimental Hematology 2025;33(5):1380-1385
OBJECTIVE:
To explore the safety and efficacy of high-dose etoposide (VP-16) combined with recombinant human granulocyte colony-stimulating factor (rhG-CSF) as salvage mobilization for peripheral blood stem cells (PBSC) in newly diagnosed multiple myeloma (NDMM) patients.
METHODS:
From April 2021 to May 2023, eight NDMM patients who had failed to yield sufficient PBSC during initial mobilization with high-dose cyclophosphamide (CTX) combined with rhG-CSF underwent salvage mobilization with 1.2 g/m2 etoposide combined with rhG-CSF 10 μg/(kg·d). The effects and adverse reactions of initial mobilization and salvage mobilization were analyzed.
RESULTS:
For salvage mobilization and initial mobilization, the numbers of PBSC collections were 16 and 18, respectively. The mean value of total collected CD34+ cells were (11.90±5.75)×106/kg and (1.67±0.75)×106/kg (P =0.0010) in salvage mobilization group and initial mobilization group, respectively. The proportion of patients with a total collection of CD34+ cell count≥2×106/kg were 100% and 37.5% (P =0.0625), and the proportion of patients with a total collection of CD34+ cell count≥5×106/kg were 87.5% and 0% (P =0.0156) in salvage mobilization group and initial mobilization group, respectively. For five patients who underwent high-dose CTX initial mobilization but had a total CD34+ cell count < 2×106/kg, successful collection was achieved through salvage mobilization with high-dose VP-16. Salvage mobilization with high-dose VP-16 was scheduled 2-3 weeks after failure of CTX mobilization. Adverse reactions of high-dose VP-16 mobilization did not increase compared to the initial mobilization with high-dose CTX.
CONCLUSION
As a salvage mobilization regimen, VP-16 1.2 g/m2 combined with rhG-CSF is safe and highly effective in NDMM patients who failed to initial mobilization with high-dose CTX combined with rhG-CSF.
Humans
;
Multiple Myeloma/therapy*
;
Etoposide/therapeutic use*
;
Hematopoietic Stem Cell Mobilization/methods*
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Cyclophosphamide/therapeutic use*
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Granulocyte Colony-Stimulating Factor
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Salvage Therapy
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Peripheral Blood Stem Cells
;
Male
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Middle Aged
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Female
;
Peripheral Blood Stem Cell Transplantation
8.Correction to: Scorpion Venom Heat-Resistant Peptide is Neuroprotective Against Cerebral Ischemia-Reperfusion Injury in Association with the NMDA-MAPK Pathway.
Xu-Gang WANG ; Dan-Dan ZHU ; Na LI ; Yue-Lin HUANG ; Ying-Zi WANG ; Ting ZHANG ; Chen-Mei WANG ; Bin WANG ; Yan PENG ; Bi-Ying GE ; Shao LI ; Jie ZHAO
Neuroscience Bulletin 2025;41(3):549-550
9.Integrative transcriptomic and epigenomic analysis identifies BCL6B as a novel regulator of human pluripotent stem cell to endothelial differentiation.
Yonglin ZHU ; Jinyang LIU ; Jia WANG ; Shuangyuan DING ; Hui QIU ; Xia CHEN ; Jianying GUO ; Peiliang WANG ; Xingwu ZHANG ; Fengzhi ZHANG ; Rujin HUANG ; Fuyu DUAN ; Lin WANG ; Jie NA
Protein & Cell 2025;16(11):985-990
10.Pharmacodynamic Characteristics and Neuroinflammatory Mechanisms of Ruyi Zhenbaowan in Treating Nociceptive Hypersensitivity and Central Sensitisation of Spinal Cord in Mouse Model of Central Post-stroke Pain
Aoqing HUANG ; Wenli WANG ; Ying LIU ; Hai ping WANG ; Chunyan ZHU ; Na LIN
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(24):36-46
ObjectiveTo clarify the pharmacodynamic characteristics and neuroinflammatory mechanisms of Ruyi Zhenbaowan (RYZBW) in treating nociceptive hypersensitivity and central sensitisation of spinal cord in the mouse model of central post-stroke pain (CPSP). MethodSPF-grade male ICR mice of 8 weeks old were assigned into the sham operation (Sham), model (CPSP), low-, medium-, and high-dose (0.303, 0.607 1.214 g·kg-1) RYZBW (RYZBW-L, RYZBW-M, and RYZBW-H, respectively), and pregabalin (PGB, 0.046 g·kg-1, positive control) groups. The rat model of CPSP was established by injection of type Ⅳ collagenase into the ventral posterior lateral nucleus of the thalamus on day 1. Rats were administrated with corresponding drugs or normal saline (Sham and CPSP groups) by gavage from day 14 to day 17. The mechanical pain sensitivity test was performed on days 0, 3, 4, 7, 10, 14, 17. On day 18, the L5 segment of spinal cord was collected for the detection of inflammatory cytokines by immunoinflammatory microarray, CXC chemokine ligand 16 (CXCL16) by enzyme-linked immunosorbent assay, and calcitonin gene-related peptide (cGRP) by immunohistochemistry. In addition, fluorescence dual-labeling was employed to determine the expression levels of CXCL16, the dendritic cell marker CD11c, the macrophage marker CD68, the microglia marker TMEM119, the endothelial cell markers CD31 and CXCR6, and the T cell marker CD3. ResultCompared with the Sham group, the mechanical pain threshold of the CPSP group was significantly lower than that of the Sham group from day 3 to day 17, with stable hyperalgesia symptoms. On the 7th day, the mechanical pain threshold of the PGB group was significantly higher than that of the CPSP group, with significant analgesic effect (P<0.01). On days 10-17, the mechanical pain threshold of the RYZBW-H group was significantly higher than that of the CPSP group, showing a stable analgesic effect (P<0.05). On the 17th day, the analgesic effect of RYZBW was dose-effect correlated (R2=0.303 7). From day 4 to day 17, the mechanical pain threshold of RYZBW-H group was positively correlated with time (R2=0.111 5). The above results suggested that the analgesia of RYZBW was time-dependent. On the 17 th day, the expression of central sensitization marker cGRP in the spinal dorsal horn of CPSP mice was significantly increased compared with the Sham group (P<0.05), and RYZBW down-regulated it in a dose-dependent manner (R2=0.500 8), suggesting that RYZBW significantly inhibited the central sensitization of the spinal cord caused by CPSP. The results of spinal cord inflammation chip on the 17th day showed that compared with CPSP group, RYZBW-H group inhibited CXCL16 expression (P<0.01).The results of ELISA based on independent repeated samples showed that RYZBW inhibited the expression of CXCL16 protein in spinal cord in a dose-dependent manner (R2=0.250 4). The results of immunofluorescence double labeling showed that compared with Sham group, the expression of CXCL16 in CD11c positive dendritic cells in CPSP group increased, and the number of CD68 positive cells increased (P<0.05). Compared with CPSP group, RYZBW down-regulated it: the expression of CXCL16 in CD31 positive endothelial cells, CD68 positive macrophages and TMEM119 positive microglia increased, and the number and cell body area of TMEM119 positive microglia increased significantly (P<0.05). The number of CD3 positive T cells (P<0.05) and the expression of CXCR6 in CD3 positive T cells were increased. RYZBW inhibited the activation of endothelial cells and macrophages in a dose-dependent manner, and reduced the infiltration of microglia and T cells (R2=0.691 4, R2=0.551 5, R2=0.653 2, R2=0.180 6, R2=0.287 5, R2=0.298 6,R2=0.511 6). ConclusionRYZBW can effectively alleviate nociceptive hypersensitivity and central sensitisation of the spinal cord in CPSP mice by regulating CXCL16-CXCR-6, inhibiting the infiltration and activation of microglia and macrophages, and the activation of dendritic cells, endothelial cells, and T cells.


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