1.Preliminary application of sacral neuromodulation in patients with benign prostatic hyperplasia complicated with underactive bladder after transurethral resection of the prostate
Ning LIU ; Yan ZHANG ; Tao LI ; Qiang HU ; Kai LU ; Lei ZHANG ; Jianping WU ; Shuqiu CHEN ; Bin XU ; Ming CHEN
Journal of Modern Urology 2025;30(1):39-42
[Objective] To evaluate the efficacy and safety of sacral neuromodulation (SNM) in the treatment of patients with benign prostatic hyperplasia (BPH) complicated with underactive bladder (UAB) who respond poorly to transurethral resection of the prostate (TURP). [Methods] A retrospective analysis was performed on 10 patients with BPH and UAB treated with TURP by the same surgeon in Zhongda Hospital Southeast University during Jan.2018 and Jan.2023.The residual urine volume was not significantly relieved after operation, and the maximum urine flow rate and urine volume per discharge were not significantly improved.All patients underwent phase I SNM, and urinary diaries were recorded before and after surgery to observe the average daily frequency of urination, volume per urination, maximum urine flow rate, and residual urine volume. [Results] The operation time was (97.6±11.2) min.During the postoperative test of 2-4 weeks, if the residual urine volume reduction by more than 50% was deemed as effective, SNM was effective in 6 patients (60.0%). Compared with preoperative results, the daily frequency of urination [(20.2±3.8) times vs. (13.2±3.2) times], volume per urination [(119.2±56.7) mL vs. (246.5±59.2) mL], maximum urine flow rate [(8.7±1.5) mL/s vs. (16.5±2.6) mL/s], and residual urine volume [(222.5±55.0) mL vs. (80.8±16.0) mL] were significantly improved, with statistical significance (P<0.05). There were no complications such as bleeding, infection, fever or pain.The 6 patients who had effective outcomes successfully completed phase II surgery, and the fistula was removed.During the follow-up of 1 year, the curative effect was stable, and there were no complications such as electrode displacement, incision infection, or pain in the irritation sites.The residual urine volume of the other 4 unsuccessful patients did not improve significantly, and the electrodes were removed and the vesicostomy tube was retained. [Conclusion] SNM is safe and effective in the treatment of BPH with UAB patients with poor curative effects after TURP.
2.Effect of Modified Chunzetang on Bladder Fibrosis and Detrusor Function in Rats with Neurogenic Bladder Urinary Retention Induced by Spinal Cord Injury via Regulating NF-κB/TGF-β1 Signaling Pathway
Zhenhua XU ; Yanjie LI ; Yafeng REN ; Haoyuan LIU ; Bochao ZHU ; Juan LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(5):95-103
ObjectiveTo investigate the therapeutic effect and mechanism of modified Chunzetang on bladder fibrosis and detrusor function in rats with neurogenic bladder urinary retention induced by spinal cord injury. MethodsIn this study, an improved Hassan Shaker spinal cord transection method was used to establish a model of neurogenic bladder urinary retention induced by spinal cord injury, and rats with a spinal cord injury behavior score of 0 were selected for follow-up experiments. The selected rats were randomly divided into a model group (normal saline gavage), low-dose traditional Chinese medicine (TCM) group (gavage of 14.4 g·kg-1 modified Chunzetang), high-dose TCM group (gavage of 28.8 g·kg-1 modified Chunzetang), positive drug group [intraperitoneal injection of 0.05 g·kg-1 nuclear transcription factor-κB (NF-κB) inhibitor pyrrolidine dithiocarbamate (PDTC)], and combination group (intraperitoneal injection of 0.05 g·kg-1 PDTC + gavage of 28.8 g·kg-1 modified Chunzetang). The rats in these groups were administrated with corresponding drugs once a day for four weeks. The BL-420s biofunction acquisition system was used in the experiment to calculate the urodynamic indexes, and the isolated bladder was quickly weighed. The detrusor traction experiment was used to record the minimum bladder contraction tension and frequency in each group. The pathological morphology and tissue fibrosis of detrusor in each group observed by Hematoxycin-eosin (HE) staining and Masson staining were compared. The expression level of α-smooth muscle actin (α-SMA) was detected by immunohistochemistry. Western blot was used to detect the protein expression of NF-κB p65, nuclear transcription factor-κB suppressor protein α (IκBα), transforming growth factor-β1 (TGF-β1), type Ⅰ collagen (ColⅠ), and type Ⅲ collagen (ColⅢ) in bladder tissue of rats in each group. Enzyme-linked immunosorbent assay (ELISA) was used to detect the changes in serum levels of IL-6, IL-1β, and TNF-α. ResultsCompared with that in the sham operation group, the pressure at the urinary leakage point in the model group decreased (P<0.01), and the bladder mass, bladder contractile tension, maximum bladder capacity, and bladder compliance increased (P<0.05,P<0.01). HE staining showed that the arrangement of bladder epithelial cells was disordered, and the pathological manifestations such as mucosa and myometria neutrophil infiltration were obvious. The lamina propria structure was destroyed, and the muscle fiber arrangement was disordered. The interstitial widening and tissue edema were obvious. Masson staining showed that the bladder wall of the model group had more collagen fiber deposition, and the degree of detrusor fibrosis was more severe. The content of detrusor in the visual field was reduced. At the same time, the protein expressions of NF-κB p65, TGF-β1, IκBα, ColⅠ, and ColⅢ in bladder tissue of rats in the model group were significantly increased (P<0.01), and the serum levels of IL-6, IL-1β, and TNF-α were significantly increased (P<0.05). Compared with that in the model group, the pressure at the urinary leakage point in the modified Chunzetang and positive drug groups was increased (P<0.05), and the wet bladder weight, minimum bladder contractile tension, maximum bladder capacity, and bladder compliance were restored (P<0.05, P<0.01). HE and Masson showed that the bladder epithelial cells were relatively neatly arranged, and the structure of the bladder lamina propria was relatively stable. The detrusor bundles were arranged in an orderly manner, and the interstitium was narrow. The degree of tissue edema was relatively low, and the degree of bladder detrusor fibrosis in the modified Chunzetang and positive drug groups was reduced, while the degree of bladder detrusor fibrosis in the positive drug group and combination groups was not obvious. The results of Western blot showed that the expression of NF-κB p65, IκBα, TGF-β1, ColⅠ, and ColⅢ in bladder tissue, as well as the serum levels of IL-6, IL-1β, and TNF-α in modified Chunzetang and positive drug groups were significantly lower, and the expression of bladder tissue-related proteins and the serum levels of IL-6, IL-1β, and TNF-α in the TCM groups decreased significantly with the increase in dose (P<0.05). The results of immunohistochemistry suggested that modified Chunzetang could fully affect the expression of α-SMA in bladder tissue. ConclusionModified Chunzetang can inhibit collagen deposition in bladder tissue of rats with urinary retention induced by spinal cord injury, delay the occurrence and development of bladder fibrosis, and protect the normal contractile function of bladder detrusor, and its mechanism may be related to inhibiting the NF-κB/TGF-β1 signaling pathway, reducing the production of NF-κB p65, IκBα, TGF-β1, ColⅠ, ColⅢ, and other related proteins, and protecting the muscle strength of detrusor.
3.Anti-osteoporosis Effect of Isorhamnetin: A Review
Shilong MENG ; Xu ZHANG ; Yawei XU ; Yang YU ; Wei LI ; Yanguang CAO ; Xiaolin SHI ; Wei ZHANG ; Kang LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(5):347-352
Osteoporosis is a common senile bone metabolism disease, clinically characterized by decreased bone mass, destruction of bone microstructure, increased bone fragility, and easy fracture. It tends to occur in the elderly and postmenopausal women, seriously threatening the quality of life and physical and mental health of the elderly. At present, the treatment of osteoporosis is mainly based on oral western medicines, such as calcium, Vitamin D, and bisphosphonates. Still, there are drawbacks such as a long medication cycle and many adverse reactions. In recent years, due to the advantages of multi-component, multi-pathway, and multi-target, some traditional Chinese medicines and effective ingredients can regulate the osteogenic and osteoclastic differentiation process in both directions and are widely used in the prevention and treatment of osteoporosis. Hippophae rhamnoides is a commonly used herbal medicine, and its fruits are rich in flavonoids, polyphenols, fatty acids, vitamins, and trace elements, which have been proven to have a good anti-osteoporosis effect. Isorhamnetin is the main effective ingredient of Hippophae rhamnoides fruits, which has many pharmacological effects such as anti-inflammation, anti-oxidative stress, anti-aging, and anti-tumor. Studies have shown that isorhamnetin can participate in the regulation of bone metabolism and has a good anti-osteoporosis effect. However, the pharmacological effects and related mechanisms of isorhamnetin against osteoporosis have not been systematically summarized. Therefore, this paper reviewed the pharmacological effects and related mechanisms of isorhamnetin against osteoporosis by referring to relevant literature to provide more basis for the development and application of isorhamnetin.
4.Effects and mechanism of asperuloside on the pyroptosis of intestinal epithelial cells in rats with ulcerative colitis
Chao XU ; Xiaoping TAN ; Jie LI ; Minghua AI ; Yueyue LU ; Chaoyong LIU
China Pharmacy 2025;36(2):166-171
OBJECTIVE To investigate the effects and mechanism of asperuloside (Asp) on the pyroptosis of intestinal epithelial cells in rats with ulcerative colitis (UC). METHODS The male SD rats were randomly divided into Control group, model group (UC group), ASP low-dose and high-dose groups [Asp-L, Asp-H groups, Asp 35, 70 mg/(kg·d)], ASP high-dose group+AMPK inhibitor Compound C group [Asp-H+Compound C group, Asp 70 mg/(kg·d)+Compound C 0.2 mg/(kg·d)], with 12 rats in each group. Except for Control group, the other groups were injected with 50% ethanol (0.25 mL)+5% 2,4, 6- trinitrobenzene sulfonic acid solution (2 mL/kg) into the intestinal cavity to construct UC model. After modeling, the rats in each drug group were given corresponding drug solution by gavage or (and) tail vein injection, once a day, for 14 consecutive days. After the last administration, the weight of rats in each group was measured, and the length of their colons was measured; disease activity index (DAI) score and colonic mucosal damage index (CMDI) score were performed, and the serum levels of inflammatory factors (interleukin-18, -1β, -6) were detected. The pathological changes of the colon tissue were observed. The expressions of pyroptosis-related proteins [caspase-1, gasdermin D (GSDMD)] in colon tissue, and pathway-related proteins such as adenosine monophosphate-activated protein kinase (AMPK), thioredoxin-interacting protein (TXNIP), NOD-like receptor protein 3 (NLRP3) and apoptosis-associated speck-like protein containing a CARD (ASC) were all detected. RESULTS Compared with Control group, the colon tissue structure of rats in UC group was damaged, with obvious infiltration of inflammatory cells and edema. Their body weight, colon length and phosphorylation level of AMPK protein were significantly reduced or shortened; DAI and CMDI scores, serum levels of inflammatory factors, and the protein expressions of caspase-1, GSDMD, TXNIP, NLRP3 and ASC in colon tissue were increased or upregulated significantly (P<0.05). Compared with UC group, the pathological damage of colon tissue in rats was relieved in Asp-L and Asp-H groups, and all quantitative indicators were significantly improved (P<0.05); the improvement effect of Asp-H group was more significant (P<0.05). Compound C could significantly reverse the improvement effect of high-dose of Asp on the above indicators in UC rats (P<0.05). CONCLUSIONS Asp can improve inflammatory damage in colon tissue and inhibit pyroptosis of intestinal epithelial cells in UC rats, which is associated with the activation of AMPK and inhibition of TXNIP/NLRP3 signaling pathway.
5.DING Ying's Experience in Treating Children with IgA Nephropathy from the Perspective of "Wind-Induced Water Turbidity"
Yudi LI ; Yan XU ; Xiaodan REN ; Wenbo LIU
Journal of Traditional Chinese Medicine 2025;66(3):228-232
To summarize Professor DING Ying's clinical experience in treating children's IgA nephropathy from the perspective of "wind-induced water turbidity". It is believed that the core pathogenesis of IgA nephropathy in children is the wind stimμlating water to become turbidity, and the basic treatment principles are to eliminate wind and settle viscera, and to remove turbidity and drain water. For those with the syndrome of wind-heat invading the lungs and injury to blood collaterals, modified Yinqiao Powder (银翘散) combined with Xiaoji Decoction (小蓟饮子) could be used; for those with dampness-heat in Sanjiao, heavy dampness and light heat pattern, modified Sanren Decoction (三仁汤) combined with Bazheng Powder (八正散) could be used; for those with lung-spleen qi deficiency and kidney essence depletion pattern, modified Buzhong Yiqi Decoction (补中益气汤) combined with Wuzi Yanzong Pill (五子衍宗丸) could be used; for those with deficiency of both qi and yin, kidney deficiency with stasis pattern, self-prescribed Yishen Huazhuo Formula (益肾化浊方) could be used. Meanwhile on the basis of pattern identification and treatment, rattan-type herbs could be combined in use in order to unblock the meridians and collaterals.
6.Effects and mechanism of asperuloside on the pyroptosis of intestinal epithelial cells in rats with ulcerative colitis
Chao XU ; Xiaoping TAN ; Jie LI ; Minghua AI ; Yueyue LU ; Chaoyong LIU
China Pharmacy 2025;36(2):166-171
OBJECTIVE To investigate the effects and mechanism of asperuloside (Asp) on the pyroptosis of intestinal epithelial cells in rats with ulcerative colitis (UC). METHODS The male SD rats were randomly divided into Control group, model group (UC group), ASP low-dose and high-dose groups [Asp-L, Asp-H groups, Asp 35, 70 mg/(kg·d)], ASP high-dose group+AMPK inhibitor Compound C group [Asp-H+Compound C group, Asp 70 mg/(kg·d)+Compound C 0.2 mg/(kg·d)], with 12 rats in each group. Except for Control group, the other groups were injected with 50% ethanol (0.25 mL)+5% 2,4, 6- trinitrobenzene sulfonic acid solution (2 mL/kg) into the intestinal cavity to construct UC model. After modeling, the rats in each drug group were given corresponding drug solution by gavage or (and) tail vein injection, once a day, for 14 consecutive days. After the last administration, the weight of rats in each group was measured, and the length of their colons was measured; disease activity index (DAI) score and colonic mucosal damage index (CMDI) score were performed, and the serum levels of inflammatory factors (interleukin-18, -1β, -6) were detected. The pathological changes of the colon tissue were observed. The expressions of pyroptosis-related proteins [caspase-1, gasdermin D (GSDMD)] in colon tissue, and pathway-related proteins such as adenosine monophosphate-activated protein kinase (AMPK), thioredoxin-interacting protein (TXNIP), NOD-like receptor protein 3 (NLRP3) and apoptosis-associated speck-like protein containing a CARD (ASC) were all detected. RESULTS Compared with Control group, the colon tissue structure of rats in UC group was damaged, with obvious infiltration of inflammatory cells and edema. Their body weight, colon length and phosphorylation level of AMPK protein were significantly reduced or shortened; DAI and CMDI scores, serum levels of inflammatory factors, and the protein expressions of caspase-1, GSDMD, TXNIP, NLRP3 and ASC in colon tissue were increased or upregulated significantly (P<0.05). Compared with UC group, the pathological damage of colon tissue in rats was relieved in Asp-L and Asp-H groups, and all quantitative indicators were significantly improved (P<0.05); the improvement effect of Asp-H group was more significant (P<0.05). Compound C could significantly reverse the improvement effect of high-dose of Asp on the above indicators in UC rats (P<0.05). CONCLUSIONS Asp can improve inflammatory damage in colon tissue and inhibit pyroptosis of intestinal epithelial cells in UC rats, which is associated with the activation of AMPK and inhibition of TXNIP/NLRP3 signaling pathway.
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.Traditional Chinese Medicine Treats Sepsis by Regulating PI3K/Akt Pathway: A Review
Zhu LIU ; Jiawei WANG ; Jing YAN ; Jinchan PENG ; Mingyao XU ; Liqun LI ; Sheng XIE
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(2):314-322
Sepsis is a systemic inflammatory response syndrome caused by the invasion of pathogenic microorganisms such as bacteria. In addition to the manifestations of systemic inflammatory response syndrome and primary infection lesions, critical cases often have manifestations of organ hypoperfusion. The morbidity and mortality of sepsis have remained high in recent years, which seriously affect the quality of life of the patients. The pathogenesis of sepsis is complicated, in which uncontrollable inflammation is a key mechanism. The phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) signaling pathway plays a key role in mediating inflammation in sepsis. The available therapies of sepsis mainly include resuscitation, anti-infection, vasoactive drugs, intensive insulin therapy, and organ support, which show limited effects of reducing the mortality. Therefore, finding new therapeutic drugs is a key problem to be solved in the clinical treatment of sepsis. In recent years, studies have shown that traditional Chinese medicine (TCM) can regulate the PI3K/Akt pathway via multiple pathways, multiple effects, and multiple targets to inhibit inflammation and curb the occurrence and development of sepsis, which has gradually become a hot spot in the prevention and treatment of sepsis. Moreover, studies have suggested that TCM has unique advantages in the treatment of sepsis. TCM can regulate the PI3K/Akt signaling pathway to inhibit inflammation, reduce oxidative stress, and control apoptosis in the prevention and treatment of sepsis. Despite the research progress, a systematic review remains to be performed regarding the TCM treatment of sepsis by regulating the PI3K/Akt signaling pathway. After reviewing relevant papers published in recent years, this study systematically summarizes the relationship between PI3K/Akt pathway and sepsis and the role of TCM in the treatment of sepsis, aiming to provide new ideas for the potential treatment of sepsis and the development of new drugs.
9.Clinical Characteristics and Influencing Factors of Rheumatoid Arthritis in Patients with Cold Dampness Obstruction Syndrome
Yanyu CHEN ; Yanqi LI ; Longxiao LIU ; Liubo ZHANG ; Tianyi LAN ; Nan ZHANG ; Cheng XIAO ; Yuan XU ; Qingwen TAO
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(3):140-146
ObjectiveTo study the clinical characteristics and influencing factors of rheumatoid arthritis (RA) in the patients with cold dampness obstruction syndrome. MethodsThe RA patients treated in the Department of Traditional Chinese Medicine and Rheumatology of the China-Japan Friendship Hospital from August 2022 to June 2024 were selected. The demographic information, clinical data, laboratory test results, and traditional Chinese medicine (TCM) symptom information were collected for syndrome differentiation, on the basis of which the characteristics and influencing factors of cold dampness obstruction syndrome were analyzed. ResultsA total of 258 RA patients were selected in this study, including 88 (34.1%) patients with cold dampness obstruction syndrome, 53 (20.5%) patients with dampness and heat obstruction syndrome, 31 (12.0%) patients with wind dampness obstruction syndrome, 29 (11.2%) patients with liver-kidney deficiency syndrome, 19 (7.4%) patients with Qi-blood deficiency syndrome, 14 (5.4%) patients with phlegm-stasis obstruction syndrome, 15 (5.8%) patients with stasis obstructing collateral syndrome and 9 (3.5%) patients with Qi-Yin deficiency syndrome. The patients were assigned into two groups of cold dampness obstruction syndrome and other syndromes. The group of cold dampness obstruction syndrome had lower joint fever, 28-tender joint count (TJC28), and 28-joint disease activity score (DAS28)-C-reactive protein (CRP) and higher central sensitization, cold feeling of joints, fear of wind and cold, cold limbs, and abdominal distention than the group of other syndromes (P<0.05). The binary logistic regression analysis showed that central sensitization (OR 5.749, 95%CI 2.116-15.616, P<0.001) and DAS28-CRP (OR 0.600, 95% CI 0.418-0.862, P=0.006) were the independent factors influencing cold dampness obstruction syndrome in RA. ConclusionCold dampness obstruction syndrome is a common syndrome in RA patients. It is associated with central sensitization, cold feeling of joints, abdominal distension and may be a clinical syndrome associated with central sensitization.
10.Effects and mechanism of persimmon leaf extract on IEC-6 cell ferroptosis induced by H2O2
Xuexia ZHANG ; Min ZHOU ; Hongyan ZHOU ; Lifei WANG ; Huani LI ; Changhe LIU ; Hongde XU ; Mingli ZHANG
China Pharmacy 2025;36(1):64-70
OBJECTIVE To investigate the effects and potential mechanism of persimmon leaf (PL) extract against ferroptosis induced by H2O2 in IEC-6 cells. METHODS Using IEC-6 cells as object, the effects of ferroptosis inhibitor ferrostatin-1 on IEC-6 cell viability induced by H2O2 were investigated; IEC-6 cells were divided into control group, H2O2 group, H2O2+PL 25 μg/mL group and H2O2+PL 50 μg/mL group. The levels of oxidant stress indexes [content of malondialdehyde (MDA), activity of superoxide dismutase (SOD), and levels of reactive oxygen species (ROS)], mitochondrial membrane potential (MMP) as well as mRNA and protein expressions of nuclear factor-erythroid-2 related factor 2 (Nrf2), heme oxygenase-1 (HO-1), NADPH/quinone oxidoreductase-1 (NQO-1), cystine/glutamate anti-porter (xCT), glutathione peroxidase 4 (GPX4) and ferritin heavy chain (FTH) were detected. RESULTS Ferroptosis inhibitor ferrostatin-1 could significantly increase the survival rate of H2O2-induced cells (P< 0.01). Compared with the control group, MDA content, ROS level, mRNA expressions of Nrf2 and NQO-1 as well as protein expressions of Nrf2 and HO-1 were increased or up-regulated significantly, while SOD activity, MMP, mRNA expressions of xCT, GPX4 and FTH as well as protein expressions of GPX4 and FTH were decreased or down-regulated significantly (P<0.01 or P<0.05). Compared with the H2O2 group, oxidative stress Δ indexes of H2O2+PL 25, 50 μg/mL groups were reversed to different extents, MMP level was increased significantly, as well as mRNA and protein expressions of Nrf2, HO-1, NQO-1,xCT, GPX4 and FTH were up-regulated to different extents;there were statistical significances in some indexes between groups (P<0.01 or P<0.05). CONCLUSIONS PL extract can alleviate mitochondrial membrane damage and abnormal accumulation of ROS caused by H2O2, which may be related to the inhibition of ferroptosis by activating the Nrf2/HO-1 signaling pathway.

Result Analysis
Print
Save
E-mail