1.Therapeutic Effect and Mechanism of Solanum nigrum on Hepatic Fibrosis Induced by Carbon Tetrachloride in Rats
Min WU ; Zhenxiang AN ; Yuanli HE ; Weinong WEN ; Qiang SU ; Song HE
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(2):117-125
ObjectiveTo investigate the therapeutic effect and mechanism of Solanum nigrum on hepatic fibrosis induced by carbon tetrachloride (CCl4) in rats. MethodsSixty SD rats were randomly allocated into blank, model, low-, medium-, and high-dose (0.9, 1.8, 3.6 g·kg-1, respectively) S. nigrum, and silibinin capsules (18.9 mg·kg-1) groups. Except the blank group, the other groups were subjected to intraperitoneal injection of 40% CCl4 solution for the modeling of hepatic fibrosis. After 4 weeks of gavage, blood was collected from the abdominal aorta following intraperitoneal anesthesia. The rats were sacrificed, and the liver was separated. The pathological changes were observed by hematoxylin-eosin staining and Masson staining. The levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), and liver fibrosis indexes [type Ⅲ procollagen (PCⅢ), type Ⅳ collagen (Col Ⅳ), laminin (LN), and hyaluronic acid (HA)] in the rat serum were determined. The mRNA and protein levels of B cell lymphoma-2 (Bcl-2)/Bcl-2-associated X protein (Bax)/cysteinyl aspartate-specific proteinase-3 (Caspase-3) pathway-related factors were determined by Real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) and Western blot, respectively. ResultsCompared with the blank group, the model group exhibited significant hepatocyte edema, infiltration of inflammatory cells, connective tissue proliferation, and collagen fiber deposition in the liver tissue. Compared with the model group, low-, medium-, and high-dose S. nigrum and silymarin capsules significantly improved the structure of liver cells and alleviated the edema, inflammatory cell infiltration, connective tissue proliferation, and collagen fiber deposition. Compared with those in the blank group, the serum levels of ALT, AST, PCⅢ, Col Ⅳ, LN, and HA were elevated in the model group (P<0.01). Compared with the model group, the serum levels of ALT, AST, PCⅢ, Col Ⅳ, LN, and HA were reduced in all the treatment groups (P<0.05). Real-time PCR and Western blot results showed that compared with the blank group, the model group had up-regulated mRNA and protein levels of Bcl-2 and down-regulated mRNA and protein levels of Bax and Caspase-3 (P<0.01). Compared with the model group, all the treatment groups showed down-regulated mRNA and protein levels of Bcl-2 and up-regulated mRNA and protein levels of Bax and Caspase-3 (P<0.05), with the high-dose S. nigrum group showing the best therapeutic effect. ConclusionS. nigrum modulates the progression of hepatic fibrosis in rats by regulating apoptosis through the Bcl-2/Bax/caspase-3 pathway.
2.Analysis of Quality Changes of Small Packaged Alismatis Rhizoma Decoction Pieces Under Different Packaging and Storage Conditions
Gaoting YANG ; Rui XIAN ; Zimin WANG ; Zongyi ZHAO ; Zhiqiong LAN ; Xiaoli PAN ; Min LI
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(2):179-188
ObjectiveTo screen suitable packaging and storage conditions for small packaged Alismatis Rhizoma decoction pieces, laying the foundation for developing standardized storage, maintenance techniques and determining shelf life. MethodsUsing the accelerated stability test method, the small packaged decoction pieces of Alismatis Rhizoma were placed in polyethylene plastic bags, aluminum foil polyethylene composite bags, and cowhide coated paper bags under temperature of (40±2) ℃ and relative humidity of (75±5)% conditions, the quality testing was conducted at the end of the 0th, 1st, 2nd, 3rd, and 6th month, respectively. Using long-term stability test method, an orthogonal experiment was designed to investigate storage conditions, packaging materials, and packaging methods. At the end of the 0th, 1st, 3rd, 6th, 9th, 12th, 18th, and 24th month, the quality of small packaged Alismatis Rhizoma decoction pieces was tested under different packaging and storage conditions(including 2 packaging methods:vacuum packaging and sealed packaging, 3 storage conditions:room temperature, cool, and modified atmosphere, 3 packaging materials:cowhide coated paper bag, aluminum foil polyethylene composite bag, and polyethylene plastic bag). Then, the G1-entropy weight method combined with orthogonal experiment was used to analyze the quality changes of the decoction pieces under different packaging and storage conditions to identify optimal packaging and storage conditions. The quality testing indicators for Alismatis Rhizoma decoction pieces were expanded beyond those specified in the 2020 edition of the Pharmacopoeia of the People's Republic of China. In addition to the existing indicators(characteristics, moisture content, extractives, and the total content of 23-acetyl alisol B and 23-acetyl alisol C), new indicators including color value, water activity, total triterpenoid content, and alisol B content have been added. ResultsThe accelerated stability test results indicated that the quality of small packaged Alismatis Rhizoma decoction pieces was more stable when packaged in aluminum foil-polyethylene composite materials compared to cowhide-coated paper bags and polyethylene plastic bags. Analysis of the long-term stability test results using the G1-entropy weight method combined with orthogonal experiment revealed that storage conditions had the greatest impact on both raw and salt-processed products, followed by packaging materials, while the packaging method had the least influence. For both types of small packaged Alismatis Rhizoma decoction pieces, modified atmosphere storage demonstrated superior efficacy compared to cool storage or room temperature storage. Storage in aluminum foil-polyethylene composite bags was superior to polyethylene plastic bags or cowhide-coated paper bags. However, the stability of sealed raw products was better than vacuum-packed ones, whereas vacuum-packed salt-processed products exhibited greater stability than their sealed counterparts. ConclusionBased on the results of the quality changes of small packaged Alismatis Rhizoma decoction pieces under different storage conditions, it is recommended that the suitable storage packaging conditions for small packaged raw products are sealed packaging with aluminum foil polyethylene composite bags and controlled atmosphere storage, and the suitable storage and packaging conditions for small packaged salt-processed products are vacuum packaging with aluminum foil polyethylene composite bags and controlled atmosphere storage.
3.The role and clinical application progress of macrophages in antibody-mediated rejection in kidney transplantation
Huan TANG ; Zeping GUI ; Min GU ; Zijie WANG
Organ Transplantation 2026;17(1):44-50
Kidney transplantation is the most effective treatment for end-stage renal failure, and antibody-mediated rejection remains the leading cause of late allograft loss. Macrophages, as central effectors of innate immunity, play a crucial role in the initiation, progression and tissue damage of antibody-mediated rejection. This article reviews the spatiotemporal dynamic evolution of macrophage polarization status in different stages of antibody-mediated rejection, the fine regulation of key signaling pathways for macrophage polarization, macrophage related molecules and the application prospects of targeted macrophage therapy. In depth analysis of the research progress of macrophages in antibody-mediated rejection, aiming to provide important theoretical basis for the development of precision diagnostic tools based on macrophages and novel immune intervention targets for antibody mediated rejection, ultimately promoting the improvement of long-term prognosis in kidney transplantation.
4.Pharmaceutical care in thrombocytopenia after bioprosthetic heart valve replacement
Huanli YIN ; Yuezhou HUANG ; Min LUO
China Pharmacy 2026;37(1):77-82
OBJECTIVE To provide a reference for anticoagulation therapy, adverse drug reaction monitoring, and individualized medication adjustment in complex cases, such as those with thrombocytopenia following bioprosthetic heart valve replacement. METHODS Clinical pharmacists participated in the pharmaceutical care of a patient with thrombocytopenia following bioprosthetic heart valve replacement. For cardiac insufficiency, the pharmacists recommended maintaining oral bisoprolol, sacubitril/valsartan, spironolactone, furosemide, and potassium chloride, with levosimendan added to enhance myocardial contractility, while monitoring blood pressure, heart rate and serum potassium levels. For thrombocytopenia, based on literature- based risk assessment, the pharmacists advised administering recombinant human interleukin-11 (rhIL-11), platelet transfusion, and employing anticoagulation therapy with nadroparin calcium bridging to warfarin, with warfarin dosage adjusted according to the international normalized ratio (INR). For rapid ventricular rate atrial fibrillation, amiodarone and digoxin were recommended. For acute liver injury, suspected to be induced by amiodarone and rhIL-11, the pharmacists suggested discontinuing the relevant drugs and treating with ademetionine 1,4-butanedisulfonate combined with polyene phosphatidylcholine for liver protection treatment. The patient received anticoagulation medication education emphasizing strict INR monitoring and close observation for bleeding or thrombotic events. RESULTS The clinicians adopted these recommendations. Following the intervention, the patient’s liver function showed significant improvement, with alanine aminotransferase decreasing to 70 U/L and aspartate aminotransferase to 42 U/L. The ventricular rate stabilized at 70-100 beats per minute, cardiac function remained stable, the INR was maintained within the target range of 1.80-2.50, and the patient was ultimately discharged with improved condition. CONCLUSIONS Through balancing anticoagulation and bleeding risks, the clinical pharmacists applied pharmaceutical expertise to assist in developing personalized anticoagulation regimens, conducted adverse drug reaction monitoring and evaluation, and optimized medication strategies, thereby effectively ensuring patient safety and therapeutic efficacy.
5.Treatment Principles and Paradigm of Diabetic Microvascular Complications Responding Specifically to Traditional Chinese Medicine
Anzhu WANG ; Xing HANG ; Lili ZHANG ; Xiaorong ZHU ; Dantao PENG ; Ying FAN ; Min ZHANG ; Wenliang LYU ; Guoliang ZHANG ; Xiai WU ; Jia MI ; Jiaxing TIAN ; Wei ZHANG ; Han WANG ; Yuan XU ; .LI PINGPING ; Zhenyu WANG ; Ying ZHANG ; Dongmei SUN ; Yi HE ; Mei MO ; Xiaoxiao ZHANG ; Linhua ZHAO
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(5):272-279
To explore the advantages of traditional Chinese medicine (TCM) and integrative TCM-Western medicine approaches in the treatment of diabetic microvascular complications (DMC), refine key pathophysiological insights and treatment principles, and promote academic innovation and strategic research planning in the prevention and treatment of DMC. The 38th session of the Expert Salon on Diseases Responding Specifically to Traditional Chinese Medicine, hosted by the China Association of Chinese Medicine, was held in Beijing, 2024. Experts in TCM, Western medicine, and interdisciplinary fields convened to conduct a systematic discussion on the pathogenesis, diagnostic and treatment challenges, and mechanism research related to DMC, ultimately forming a consensus on key directions. Four major research recommendations were proposed. The first is addressing clinical bottlenecks in the prevention and control of DMC by optimizing TCM-based evidence evaluation systems. The second is refining TCM core pathogenesis across DMC stages and establishing corresponding "disease-pattern-time" framework. The third is innovating mechanism research strategies to facilitate a shift from holistic regulation to targeted intervention in TCM. The fourth is advancing interdisciplinary collaboration to enhance the role of TCM in new drug development, research prioritization, and guideline formulation. TCM and integrative approaches offer distinct advantages in managing DMC. With a focus on the diseases responding specifically to TCM, strengthening evidence-based support and mechanism interpretation and promoting the integration of clinical care and research innovation will provide strong momentum for the modernization of TCM and the advancement of national health strategies.
6.Evaluation of transdermal absorption of self-assembled nanoparticles of Huangqin decoction loaded with terbinafine
Chengying SHEN ; Yican HE ; Xiao CHENG ; Chaoying DU ; Hongyan MIN ; Baode SHEN ; Lingfei TONG
China Pharmacy 2026;37(2):180-185
OBJECTIVE To investigate the effect of Huangqin decoction (HQD)-based self-assembled nanoparticles (SAN) co-loaded with terbinafine (TBF) (TBF-HQD-SAN NPs) on the transdermal absorption of TBF. METHODS High-speed centrifugation combined with dialysis was used to separate HQD-SAN, and TBF-HQD-SAN NPs were obtained by loading TBF using the ultrasound magnetic stirring method; the particle size distribution, Zeta potential and polydispersity index (PDI) of the nanoparticle were characterized, and the encapsulation efficiency (EE) and drug loading (DL) of TBF were determined; using in vitro and in vivo transdermal experiments, the differences in transdermal performance between TBF-HQD-SAN NPs and TBF raw materials, as well as TBF and HQD-SAN physical mixture (TBF-HQD-SAN PM), were compared and analyzed. RESULTS TBF- HQD-SAN NPs were spherical with a particle size of (177.60±2.57) nm, a PDI of 0.197 4±0.007 9, and a Zeta potential of (-14.63±0.85) mV. The EE and DL of TBF were (99.49±0.71)% and (3.22±0.10)% , respectively. In vitro transdermal experiments, compared with TBF raw materials, the steady-state permeation rate (Jss) and skin retention of TBF-HQD-SAN NPs increased by 3.34 times and 27.56 times, respectively (P<0.05); compared with TBF-HQD-SAN PM, its Jss and skinretention were increased by 2.04 times and 7.44 times, respectively (P<0.05). In vivo transdermal experiments 69号) showed that, the area under the drug-time curve and the maximum concentration of TBF-HQD-SAN NPs increased by 2.13 times and 2.06 times respectively compared to TBF raw materials, and increased by 1.59 times and 1.65 times respectively compared to TBF-HQD-SAN PM (P<0.05). CONCLUSIONS TBF-HQD-SAN NPs can significantly enhance the in vitro and in vivo transdermal absorption efficiency and skin retention of TBF.
7.Mechanism of pachymic acid in ameliorating renal injury in pregnancy induced hypertension rats by regulating the Sirt1/PGC‑1α pathway
Junjiang ZHU ; Jincheng LIN ; Jiajian WU ; Yi ZENG ; Jun HU ; Min LI ; Hongying LIU ; Jinfen LI
China Pharmacy 2026;37(2):186-191
OBJECTIVE To investigate the mechanism of pachymic acid on renal injury in pregnancy induced hypertension (PIH) rats by regulating the silent information regulator transcript 1/peroxisome proliferator-activated receptor γ coactivator-1α (Sirt1/PGC-1α) pathway. METHODS Pregnant SD rats were prepared by co-caging and PIH model was induced using N-nitro-L- arginine methyl ester (L-NAME) method. PIH rats were randomly divided into model group, L-pachymic acid (low-dose pachymic acid, 10 mg/kg) group, H-pachymic acid (high-dose pachymic acid, 20 mg/kg) group, and H-pachymic acid+EX527 (20 mg/kg pachymic acid+10 mg/kg EX527) group, with 6 rats in each group. Another 6 normal pregnant rats were selected as blank group. Each group was given relevant medicine or solvent intragastrically or intraperitoneally daily, once a day, for 28 consecutive days. After the last administration, 24 h urinary protein and tail artery systolic blood pressure (SBP) were measured in pregnant rats from each group, along with the levels of serum creatinine (Scr), blood urea nitrogen (BUN),uric acid (UA), and cystatin C (Cys-C). The contents of superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GSH-Px), and 8-hydroxy-2′-deoxyguanosine (8-OHdG) in renal tissue, as well as the mRNA and protein expression levels of Sirt1 and PGC-1α, were also determined. Meanwhile, renal histopathological changes in rats from each group were evaluated using hematoxylin-eosin (HE) staining and periodic acid-Schiff (PAS) staining. RESULTS Compared with model group, L-pachymic acid group and H-pachymic acid group exhibited significant decreases in 24 h urine protein quantification, tail artery SBP, Scr, BUN, UA, Cys-C levels, glomerulosclerosis index score of renal tissue, renal tubular injury score, the percentage of PAS positive area, MDA and 8-OHdG (P<0.05). Conversely, the contents of SOD and GSH-Px, along with the mRNA and protein expression levels of Sirt1 and PGC-1α, were significantly increased (P<0.05). Moreover, these improvements were more pronounced in H-pachymic acid group (P<0.05). Compared with H-pachymic acid group, the aforementioned indicators in pregnant rats from the H-pachymic acid+EX527 group showed significant reversal (P<0.05). CONCLUSIONS Pachymic acid significantly ameliorates renal injury induced by PIH in rats, potentially through activation of the Sirt1/PGC-1α pathway.
8.Mechanism of Ruyan Neixiao Cream in Promoting Ferroptosis in Breast Precancerous Lesion Cells by Regulating Nrf2/SLC7A11/GPX4 Signaling Pathway
Haotian ZHANG ; Yebei QIU ; Ran SU ; Xianxin YAN ; Min MA
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):98-107
ObjectiveTo explore the mechanism by which Ruyan Neixiao cream (RUC) induces ferroptosis in breast precancerous lesion (BPL) cells, and to enrich the theoretical foundation for its use in the treatment of BPL. MethodsThe inhibition of cell proliferation by 1%, 2%, and 4% concentrations of Ruyanneixiao Cream transdermal solution (RUT) was assessed using cell counting kit-8 (CCK-8) and a colony formation assay. Reactive oxygen species (ROS) were measured using the DCFH-DA probe, and the levels of ferrous ions (Fe2+), glutathione (GSH), and malondialdehyde (MDA) were determined using appropriate kits. Lipid peroxidation was detected with the C11-BODIPY581/591 fluorescent probe. The expression of nuclear factor E2-related factor 2 (Nrf2), solute carrier family 7 member 11 (SLC7A11), and glutathione peroxidase 4 (GPX4) proteins was analyzed by Western blot. The BPL rat model was constructed using 2,2′-bis(hydroxymethyl)butyric acid (DMBA) combined with estrogen and progesterone, and the rats were treated with RUC for external application. After the 12th cycle, the rats were euthanized, and histopathological changes in breast tissue were observed by hematoxylin-eosin (HE) staining. Fe2+ and MDA levels in breast tissue were measured using corresponding kits. The expression of Nrf2, SLC7A11, and GPX4 proteins in BPL rat breast tissue was detected by immunohistochemistry (IHC) and Western blot. ResultsCompared with the matrix group, the cell viability of MCF-10AT cells in the 1%, 2%, and 4% RUT groups was significantly reduced (P<0.05) in a concentration-dependent manner, with the 24-hour half inhibitory concentration (IC50) being 2.23%. Compared with the 4% RUT group, cell viability in the RUT + Fer-1 group was significantly increased (P<0.05). Compared with the matrix group, the colony formation rates of MCF-10AT cells in the 1%, 2%, and 4% RUT groups were significantly decreased (P<0.05). Compared with the 4% RUT group, the cell colony formation rate of the RUT + Fer-1 group was significantly increased (P<0.05). Compared with the matrix group, the levels of ROS and Fe2+ in the 1%, 2%, and 4% RUT groups were significantly increased (P<0.05), while GSH levels were significantly decreased (P<0.05), and MDA and lipid peroxidation levels were significantly increased (P<0.05). Compared with the 4% RUT group, ROS and Fe2+ levels in the RUT + Fer-1 group were significantly reduced (P<0.05), while GSH levels were significantly increased (P<0.05), and MDA and lipid peroxidation levels were significantly reduced (P<0.05). Compared with the matrix group, the protein expression levels of Nrf2, SLC7A11, and GPX4 in the 1%, 2%, and 4% RUT groups were significantly decreased (P<0.05). Compared with the 4% RUT group, the protein expression levels of Nrf2, SLC7A11, and GPX4 in the RUT + Fer-1 group were significantly increased (P<0.05). In the in vivo experiment, compared with the matrix group, the breast tissue histopathological status of the BPL rats in the RUC group was effectively improved, with less dilatation of the mammary ducts and more orderly duct arrangement. No pathological morphology indicative of invasive cancer was observed. Compared with the matrix group, Fe2+ and MDA levels in the mammary tissue of the RUC group were significantly increased (P<0.05). Compared with the matrix group, the protein expression levels of Nrf2, SLC7A11, and GPX4 in the mammary tissue of the RUC group were significantly reduced (P<0.05). ConclusionRUC may induce ferroptosis in BPL cells by inhibiting the Nrf2/SLC7A11/GPX4 signaling pathway, increasing Fe2+ accumulation, and promoting lipid peroxidation.
9.Effect of target characteristics on prospective memory in patients with depressive disorder
Min CHEN ; Dongsheng LYU ; Zheng WANG ; You HOU
Sichuan Mental Health 2025;38(1):14-21
BackgroundMany studies have shown that patients with depressive disorder show impairments in prospective memory, while it is deemed necessary for facilitating their social reintegration, and the current research findings are inconsistent regarding the factors affecting prospective memory of patients with depressive disorder. ObjectiveTo explore the impact of target characteristics (emotional valence and salience) on prospective memory in patients with depressive disorder, so as to provide references for the training and recovery of prospective memory function in these patients. MethodsFrom January to December 2022, 53 patients with depressive disorder were recruited from the outpatient department of Inner Mongolia Autonomous Mental Health Center. Meanwhile, 45 healthy individuals were concurrently recruited from surrounding communities as control group. An experiment with a 2 (participant type: depressive disorder, healthy control) ×2 (target salience: salient, non-salient) ×3 (emotional valence: positive, neutral, negative) factorial design was conducted. The positive/neutral/negative emotional pictures from Chinese Affective Picture System (CAPS) were used for emotional stimulation. A dual-task experimental paradigm was adopted, and the response time and accuracy in prospective memory task and ongoing task were recorded for participants with different target characteristics. Results①In the prospective memory task, the main effect of participant type was statistically significant, with the depressive group showing lower accuracy (F=14.892, P<0.01) and longer response time (F=10.642, P=0.002) compared with control group. ② The main effect of target emotional valence on accuracy (F=7.575, P=0.001) and response time (F=3.196, P=0.044) in the prospective memory task was statistically significant. Simple effect analysis revealed that depressive group yielded a shorter response time and higher accuracy rate under negative conditions compared with positive and neutral conditions (P<0.05 or 0.01). ③ The main effect of target salience on accuracy (F=6.659, P=0.012) and response time (F=10.106, P=0.002) in the prospective memory task was also statistically significant, with higher accuracy and shorter response time for salient targets compared with non-salient targets. ConclusionPatients with depressive disorder demonstrate preferential attention to and processing of negative stimuli in prospective memory tasks, while increasing target salience may facilitate spontaneous processing of prospective memory task in patients with depressive disorder. [Funded by Inner Mongolia Health Commission Medical Health Science and Technology Project (number, 202202104)]
10.Mechanism of Ruyan Neixiao Cream in Promoting Ferroptosis in Breast Precancerous Lesion Cells by Regulating Nrf2/SLC7A11/GPX4 Signaling Pathway
Haotian ZHANG ; Yebei QIU ; Ran SU ; Xianxin YAN ; Min MA
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(7):98-107
ObjectiveTo explore the mechanism by which Ruyan Neixiao cream (RUC) induces ferroptosis in breast precancerous lesion (BPL) cells, and to enrich the theoretical foundation for its use in the treatment of BPL. MethodsThe inhibition of cell proliferation by 1%, 2%, and 4% concentrations of Ruyanneixiao Cream transdermal solution (RUT) was assessed using cell counting kit-8 (CCK-8) and a colony formation assay. Reactive oxygen species (ROS) were measured using the DCFH-DA probe, and the levels of ferrous ions (Fe2+), glutathione (GSH), and malondialdehyde (MDA) were determined using appropriate kits. Lipid peroxidation was detected with the C11-BODIPY581/591 fluorescent probe. The expression of nuclear factor E2-related factor 2 (Nrf2), solute carrier family 7 member 11 (SLC7A11), and glutathione peroxidase 4 (GPX4) proteins was analyzed by Western blot. The BPL rat model was constructed using 2,2′-bis(hydroxymethyl)butyric acid (DMBA) combined with estrogen and progesterone, and the rats were treated with RUC for external application. After the 12th cycle, the rats were euthanized, and histopathological changes in breast tissue were observed by hematoxylin-eosin (HE) staining. Fe2+ and MDA levels in breast tissue were measured using corresponding kits. The expression of Nrf2, SLC7A11, and GPX4 proteins in BPL rat breast tissue was detected by immunohistochemistry (IHC) and Western blot. ResultsCompared with the matrix group, the cell viability of MCF-10AT cells in the 1%, 2%, and 4% RUT groups was significantly reduced (P<0.05) in a concentration-dependent manner, with the 24-hour half inhibitory concentration (IC50) being 2.23%. Compared with the 4% RUT group, cell viability in the RUT + Fer-1 group was significantly increased (P<0.05). Compared with the matrix group, the colony formation rates of MCF-10AT cells in the 1%, 2%, and 4% RUT groups were significantly decreased (P<0.05). Compared with the 4% RUT group, the cell colony formation rate of the RUT + Fer-1 group was significantly increased (P<0.05). Compared with the matrix group, the levels of ROS and Fe2+ in the 1%, 2%, and 4% RUT groups were significantly increased (P<0.05), while GSH levels were significantly decreased (P<0.05), and MDA and lipid peroxidation levels were significantly increased (P<0.05). Compared with the 4% RUT group, ROS and Fe2+ levels in the RUT + Fer-1 group were significantly reduced (P<0.05), while GSH levels were significantly increased (P<0.05), and MDA and lipid peroxidation levels were significantly reduced (P<0.05). Compared with the matrix group, the protein expression levels of Nrf2, SLC7A11, and GPX4 in the 1%, 2%, and 4% RUT groups were significantly decreased (P<0.05). Compared with the 4% RUT group, the protein expression levels of Nrf2, SLC7A11, and GPX4 in the RUT + Fer-1 group were significantly increased (P<0.05). In the in vivo experiment, compared with the matrix group, the breast tissue histopathological status of the BPL rats in the RUC group was effectively improved, with less dilatation of the mammary ducts and more orderly duct arrangement. No pathological morphology indicative of invasive cancer was observed. Compared with the matrix group, Fe2+ and MDA levels in the mammary tissue of the RUC group were significantly increased (P<0.05). Compared with the matrix group, the protein expression levels of Nrf2, SLC7A11, and GPX4 in the mammary tissue of the RUC group were significantly reduced (P<0.05). ConclusionRUC may induce ferroptosis in BPL cells by inhibiting the Nrf2/SLC7A11/GPX4 signaling pathway, increasing Fe2+ accumulation, and promoting lipid peroxidation.

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