1.Clinical analysis of assisted reproductive technology assisted pregnancy outcome in female patients with thyroid cancer after surgery
Xiang YAO ; Wenjuan XU ; Jianye WANG ; Qun GAO ; Gang ZHAO ; Ping ZHOU
Acta Universitatis Medicinalis Anhui 2026;61(1):151-155
ObjectiveTo evaluate the pregnancy outcomes of assisted reproductive technology (ART) in women with a history of thyroid cancer who retained fertility intentions after completing cancer treatment. MethodsA retrospective analysis was performed on 61 patients with a history of thyroid cancer who underwent in vitro fertilization/intracytoplasmic sperm microinjection and embryo transfer (IVF/ICSI-ET). These patients were included as the case group. A total of 122 non-cancer patients who received ART during the same period were selected as the control group using 1∶2 matching based on age and oocyte retrieval time. Baseline characteristics, outcomes of the first ART cycle, and cumulative pregnancy outcomes were compared between the two groups. ResultsThere was no significant difference in the basic data, the total amount of gonadotropin (Gn) and the days of use between the case group and the control group (P>0.05). However, the case group had significantly fewer retrieved oocytes, mature oocytes (MII), lower fertilization and cleavage rates, and fewer transferable and high-quality embryos, as well as fewer embryos transferred during the first cycle (P < 0.05). However, there was no significant difference in the rate of first embryo implantation and first clinical pregnancy between the two groups (P>0.05). In the analysis of cumulative outcomes, the two groups did not show statistically significant differences in the cumulative pregnancy rate, clinical pregnancy rate per transfer cycle, the number of oocyte retrieval cycles required per live birth, the number of embryo transfer cycles required per live birth, and the number of embryos used for each live birth (P>0.05). However, the cumulative live birth rate was significantly lower in the case group compared to the control group (P=0.005). ConclusionAfter treatment for thyroid cancer, when ART is used to help pregnant women, the pregnancy outcome is comparable to that of women without tumors. Individualized reproductive management and timely fertility preservation strategies are recommended to optimize reproductive outcomes in this population.
2.Effect and Mechanism of Liangyi Paste on Hepatic Lipid Deposition in Naturally Aged Mice with High-fat Diet via Cuproptosis/Oxidative Stress Pathway
Meiling ZHANG ; Yuanguang DONG ; Xiaofei SUN ; Jiaxin WANG ; Yu LIU ; Jingxuan ZHU ; Qun WANG ; Nan SONG ; Guoyuan SUI ; Lianqun JIA
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(9):91-99
ObjectiveTaking the cuproptosis/oxidative stress pathway as the entry point, this study investigated the effect and mechanism of Liangyi Paste on hepatic lipid deposition in naturally aged mice fed with a high-fat diet. MethodsAfter adaptive feeding, 80 ten-week-old male C57BL/6 mice were used. Thirty of them were randomly divided into three groups (10 mice per group): The 12-month-old control group (12MCON), the 15-month-old control group (15MCON), and the 15-month-old group with a high-fat diet (15MHFD). The 12MCON and 15MCON groups were continuously fed a standard diet, while the 15MHFD group started receiving a high-fat diet at 12 months of age. Tissue samples were collected at the corresponding time points for each group. The remaining 50 mice were randomly divided into five groups (10 mice per group): the 20-month-old control group (20MCON), the model group, and the low-, medium-, and high-dose Liangyi Paste groups (2.91 , 5.82 , 11.64 g·kg-1·d-1, respectively). The 20MCON group was continuously fed a standard diet, while the other groups started receiving a high-fat diet at 15 months of age. At 18 months of age, the Liangyi Paste groups were administered the corresponding doses of Liangyi Paste by gavage, while the 20MCON and model groups were given an equal volume of saline by gavage. After 8 weeks of continuous gavage (when the mice reached 20 months of age), tissue samples were collected. Hepatic TG levels were measured using assay kits; liver histology and lipid deposition were observed via hematoxylin-eosin (HE) and oil red O staining; reactive oxygen species (ROS) were detected by enzyme-linked immunosorbent assay (ELISA); Cu2+, superoxide dismutase (SOD), and malondialdehyde (MDA) levels were measured by colorimetry; mRNA and protein expression of genes related to cuproptosis and oxidative stress pathways were analyzed by Real-time polymerase chain reaction(Real-time PCR) and Wes automated protein expression system. ResultsCompared with 12MCON, the 15MCON group showed significantly increased hepatic TG, Cu2+, ROS, and MDA levels (P<0.01), decreased SOD (P<0.01), hepatocyte swelling, and disordered arrangement. The mRNA and protein levels of ferredoxin 1 (FDX1), dihydrolipoamide S-acetyltransferase (DLAT), heat shock protein 70 (HSP70), dihydrolipoamide dehydrogenase (DLD), pyruvate dehydrogenase E1 subunit-β (PDHB), nuclear factor erythroid 2-related factor 2 (Nrf2), and peroxisome proliferator-activated receptor γ (PPARγ) were significantly elevated (P<0.05, P<0.01). Compared with 15MCON group, the 15MHFD and 20MCON groups exhibited further increases in TG, Cu2+, ROS, and MDA (P<0.01), reduced SOD (P<0.01), and aggravated hepatocyte swelling and disorder. There were increased lipid droplets with mild vacuolization in the 15MHFD group, and no significant lipid deposition was observed in the 20MCON group. FDX1, DLAT, HSP70, DLD, PDHB, Nrf2, and PPARγ mRNA and protein levels were significantly increased (P<0.05, P<0.01). Compared with 20MCON group, the model group demonstrated markedly elevated TG, Cu2+, ROS, and MDA (P<0.01), reduced SOD (P<0.01), severe hepatic steatosis, and upregulated expression of FDX1, DLAT, HSP70, DLD, PDHB, Nrf2, and PPARγ mRNA and proteins (P<0.05, P<0.01). All abnormalities were significantly reversed after Liangyi Paste treatment. ConclusionLiangyi paste can ameliorate hepatic lipid deposition in naturally aged mice with a high-fat diet by modulating the cuproptosis/oxidative stress pathway.
3.Effects of Acupuncture at"Jiaji"Modulation of AMPK/SIRT1/PGC-1α Signaling Pathway on Angiogenesis of Lumbar Muscle Tissue in Rats with Lumbar Muscle Aging
Qun CHEN ; Zhengyu YANG ; Dongmei WANG ; Bairui CHEN ; Jing JIN ; Shaoqing CHEN
Chinese Journal of Information on Traditional Chinese Medicine 2025;32(10):113-119
Objective To observe the effects of acupuncture at"Jiaji"on angiogenesis in rats with lumbar muscle aging based on AMPK/SIRT1/PGC-1α signaling pathway;To explore its possible mechanism of improving lumbar muscle aging atrophy.Methods Totally 30 SPF male SD rats were randomly divided into model group,acupuncture group and non-acupoint group,with 10 rats in each group.Subcutaneous injection of D-galactose(300 mg/kg)into the neck and back of rats was used to prepare a subacute lumbar muscle aging rat model.Another 10 rats were selected as the blank group,and an equal amount of normal saline was subcutaneously injected into the neck and back.Intervention began in the 9th week of modeling.The acupuncture group received acupuncture at bilateral L3-L5"Jiaji",while the non-acupoint group received bilateral non-meridian and non-acupoint acupuncture,each time for 30 minutes,once a day,6 times a week,for 4 consecutive weeks.β-galactosidase staining was used to observe the morphology of rat lumbar muscle tissue;TUNEL staining was used to detect apoptosis of lumbar muscle tissue cells;ELISA was used to detect the contents of nitric oxide(NO)and endothelin-1(ET-1)in lumbar muscle tissue;immunofluorescence staining was used to detect CD31 expression and microvascular density in lumbar muscle tissue;Western blot was used to detect protein expressions of p-AMP activated protein kinase(AMPK),silencing information regulatory factor 1(SIRT1)and peroxisome proliferator activated receptor gamma co activator factor 1α(PGC-1α)in lumbar muscle tissue.Results Compared with the blank group,the positive cells of β-galactosidase staining in lumbar muscle tissue of the model group increased significantly,the apoptosis rate significantly increased(P<0.001),the NO content in lumbar muscle tissue significantly decreased(P<0.001),the ET-1 content significantly increased(P<0.001),the expression of CD31 and microvascular density significantly decreased(P<0.001),and the protein expressions of p-AMPK,SIRT1 and PGC-1α significantly decreased(P<0.01,P<0.001).Compared with the model group,the positive cells of β-galactosidase staining in lumbar muscle tissue of rats in the acupuncture group was significantly reduced,the apoptosis rate was significantly decreased(P<0.001),NO content significantly increased(P<0.001),ET-1 content was significantly reduced(P<0.01),CD31 expression and microvascular density significantly increased(P<0.01,P<0.001),and the protein expressions of p-AMPK,SIRT1,PGC-1α significantly increased(P<0.05,P<0.01).Conclusion Acupuncture at"Jiaji"can promote angiogenesis in lumbar skeletal muscle,and then improve the aging atrophy of lumbar muscle,and its mechanism may be related to the activation of AMPK/SIRT1/PGC-1α signaling pathway.
4.A path analysis study on the relationship between the nursing organizational climate and work alienation among psychiatric nurses
Lan WANG ; Cuicui LIU ; Zhijiao ZHAO ; Li PANG ; Wenfu LI ; Qun MA ; Zhongli SHI
Chinese Journal of Nursing 2025;60(19):2397-2403
Objective To explore the effect of organizational climate on work alienation in psychiatric nurses,and the mediating role of psychological capital and positive coping styles between organizational climate and work alienation,in order to provide a reference for reducing work alienation among psychiatric nurses.Methods Convenience sampling method was used to select nurses working in 6 tertiary A psychiatric hospitals in Shandong Province from January to July 2024,and the general questionnaire,Nurses' Work Alienation Questionnaire,Organizational Climate Scale for Nursing,Psychological Capital Questionnaire,and Simple Coping Style Scale were used to conduct the survey and the mediation effect test.Results A total of 606 questionnaires were recovered,of which 572 were valid,and the validity rate of the questionnaires was 94.39%.Psychiatric nurses scored(89.58±13.69)for nursing organizational climate,(32.48±11.31)for work alienation,(97.28±19.12)for psychological capital,and(23.93±7.22)for positive coping styles.There was a direct effect of nursing organizational climate on work alienation(β=-0.681,95%CI=-0.824~-0.539).Psychological capital and positive coping styles acted as separate mediators and chain mediators in the effect of nursing organizational climate on work alienation(β=-0.116,-0.048,-0.019,95%CI=-0.182~-0.034,-0.086~-0.006,-0.042~-0.002).Conclusion There are multiple mediating effects of psychiatric nurses' psychological capital,positive coping styles between nursing organizational climate and work alienation.Nursing managers can enhance psychiatric nurses' psychological capital by creating a positive and healthy organizational climate,encouraging them to adopt positive coping styles to solve problems,and reducing work alienation.
5.Clinical seizures and subclinical epileptiform activity in dementia with Lewy bodies
Ying XU ; Guili ZHANG ; Qun WANG
Chinese Journal of Neurology 2025;58(1):109-115
Dementia with Lewy bodies (DLB) is the second most prevalent type of dementia among neurodegenerative disorders. The latest guideline for diagnosis and treatment of DLB in China has defined electroencephalography abnormalities as one of the supportive biomarkers. Seizures and epileptiform discharges in patients with DLB are gradually attracting attention and research, and there is increasing evidence of the correlation between DLB and epilepsy. However, the identification and diagnosis of seizures in DLB patients are challenging. In addition to clinical seizures, subclinical epileptiform activity is also an important part in DLB research. The underlying pathological mechanism of DLB epileptic seizures is still unclear. The current connection, potential pathological mechanisms, and possible future research directions between epilepsy and DLB were summarized in this review. The current relationship between epilepsy and DLB, potential pathological mechanisms and possible future research directions were summarized in this review, reminding clinicians to pay attention to the epilepsy and subclinical epilepsy activity in the diagnosis and treatment process, early identification, and timely intervention of the DLB patients.
6.Economic costs of self-monitoring of gestational diabetes mellitus in Beijing Area
Ziqi ZHANG ; Xiaoyan WANG ; Xinyu PENG ; Qun GAO ; Yu WANG ; Shuiling QU ; Qian WANG ; Xiaoping PAN ; Ailing WANG
Journal of Public Health and Preventive Medicine 2025;36(4):22-26
Objective To analyze the economic cost of self-monitoring of gestational diabetes mellitus, and provide a basis for measuring the economic burden of gestational diabetes mellitus, and to provide a reference for the formulation of intervention development and the adjustment of resource allocation. Methods The individual economic cost of self-monitoring for gestational diabetes mellitus was measured based on a decision tree model, and the total economic cost of self-monitoring for gestational diabetes mellitus in Beijing was estimated. The uncertainty of the model parameters was analyzed using one-way sensitivity analysis. Results The average individual economic cost of gestational diabetes self-monitoring was 1184 RMB, and the individual cost incurred by choosing different types of blood glucose meters ranged from 403 to 18 000 RMB. The average individual economic cost of finger-stick blood glucose monitoring was 606 RMB and the average individual economic cost of continuous glucose monitoring was 2 374 RMB. The total economic cost of gestational diabetes self-monitoring in Beijing was 23.818 0 million RMB, and the total economic cost incurred by choosing different types of blood glucose meters ranged from 0.292 5 to 9.027 9 million RMB. The proportion of the finger-stick blood glucose monitoring had the greatest impact on the robustness of the results. Conclusion Finger-stick blood glucose monitoring is still the dominant self-monitoring method and is less costly than continuous glucose monitoring. Self-monitoring of pregnant women with gestational diabetes mellitus incurs certain economic cost and causes an economic burden on society.
7.Exploring Molecular Mechanism of Gypenoside L against Ovarian Cancer Based on Ferroptosis Pathway Mediated by Mature-tRNA-Asp-GTC/ATF3-LPCAT3
Jingxuan ZHU ; Jiao ZHAO ; Qun WANG ; Xiaofei SUN ; Jiaxin WANG ; Hongda ZHANG ; Nan SONG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):107-117
ObjectiveTo investigate the role of mature-tRNA-Asp-GTC and pre-tRNA-Arg-TCT in the ferroptosis phenotype of ovarian cancer (OC) cells and the regulatory mechanism of gypenoside L (Gyp-L) on mature-tRNA-Asp-GTC and pre-tRNA-Arg-TCT in OC cells. MethodsThe proliferation of human ovarian adenocarcinoma OVCAR3 cells was detected by cell counting kit-8 (CCK-8) assay, and the half-maximal inhibitory concentration (IC50) values of cisplatin (DDP), Gyp-L, and DDP in the presence of Gyp-L were calculated to determine the intervention concentration for subsequent experiments. Cell cloning assay and scratch assay reflected the proliferation and migration ability of OVCAR3 cells. PANDORA-seq small RNA sequencing was used to detect the differentially expressed transfer RNA-derived small RNAs (tsRNAs) in the cells after Gyp-L intervention, and the corresponding target genes of the tsRNAs were found by the RNAhybrid software. Malondialdehyde (MDA), glutathione (GSH), and lipid peroxide (LPO) levels were measured by colorimetry or enzyme linked immunosorbent assay (ELISA) method, Fe2+ content by FerroOrange fluorescent probe, and reactive oxygen species (ROS) content by DCFH-DA fluorescent probe to reflect the occurrence of ferroptosis in OVCAR3 cells. OVCAR3 cells were divided into a control group, a 50 µmol·L-1 Gyp-L group, and a 100 µmol·L-1 Gyp-L group. Quantitative real-time polymerase chain reaction (PCR) was performed to detect the expression of mature-tRNA-Asp-GTC, mature-tRNA-Leu-CAA, mature-mt_tRNA-Tyr-GTA_5_end, mature-tRNA-Val-CAC, mature-mt_tRNA-Glu-TTC, pre-tRNA-Arg-TCT, mature-tRNA-Asn-GTT, hydroxymethylbilane synthase (HMBS), Wnt, β-catenin, glutathione peroxidase 4 (GPX4), Kelch-like ECH-associated protein 1 (KEAP1), nuclear factor erythroid 2-related factor 2 (Nrf2), activating transcription factor 3 (ATF3), cystine/glutamate antiporter xCT, lysophosphatidylcholine acyltransferase 3 (LPCAT3), and arachidonate 15-lipoxygenase (ALOX15). Western blot was performed to detect the expression of HMBS, Wnt, β-catenin, GPX4, KEAP1, Nrf2, ATF3, xCT, LPCAT3, and ALOX15 proteins. ResultsThe 50 µmol·L-1 Gyp-L, 100 µmol·L-1 Gyp-L, DDP, 50 µmol·L-1 Gyp-L+DDP, and 100 µmol·L-1 Gyp-L+DDP groups showed significantly inhibited proliferation and migration of OVCAR3 cells (P<0.05) and exacerbated cell ferroptosis as reflected by the increase in the content of ROS, MDA, LPO, and Fe2+, as well as a decrease in the content of GSH (P<0.05). Compared with the control group, Gyp-L effectively interfered with the expression of 25 tsRNAs in OVCAR3 cells (P<0.05, |log2Fc|>1). Pre-tRNA-Arg-TCT/HMBS/Wnt/β-catenin/GPX4, pre-tRNA-Arg-TCT/KEAP1/NRF2/xCT, mature-tRNA-Asp-GTC/ATF3/KEAP1/NRF2/xCT, and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 axial expression was significantly aberrant after Gyp-L intervention (P<0.05). ConclusionThe pre-tRNA-Arg-TCT/HMBS/Wnt/β-catenin/GPX4, pre-tRNA-Arg-TCT/KEAP1/Nrf2/xCT, mature-tRNA-Asp-GTC/ATF3/KEAP1/Nrf2/xCT, and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 signaling pathways are involved in OC development. Gyp-L inhibits OC development by activating OVCAR3 cell ferroptosis onset mainly through the mature-tRNA-Asp-GTC/ATF3/KEAP1/Nrf2/xCT and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 signaling axes.
8.Oxylipidomics Combined with Transcriptomics Reveals Mechanism of Jianpi Huogu Prescription in Treating Steroid-induced Osteonecrosis of Femoral Head in Rats
Lili WANG ; Qun LI ; Zhixing HU ; Qianqian YAN ; Liting XU ; Xiaoxiao WANG ; Chunyan ZHU ; Yanqiong ZHANG ; Weiheng CHEN ; Haijun HE ; Chunfang LIU ; Na LIN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):190-199
ObjectiveTo unveil the mechanism of Jianpi Huogu prescription (JPHGP) in ameliorating the dyslipidemia of steroid-induced osteonecrosis of the femur head (SONFH) by oxylipidomics combined with transcriptomics. MethodsSixty SD rats were assigned into normal, model, low-, medium-, and high-dose (2.5, 5, 10 g·kg-1, respectively) JPHGP, and Jiangushengwan (1.53 g·kg-1) groups. Lipopolysaccharide was injected into the tail vein at a dose of 20 μg·kg-1 on days 1 and 2, and methylprednisolone sodium succinate was injected at a dose of 40 mg·kg-1 into the buttock muscle on days 3 to 5. The normal group received an equal volume of normal saline. Drug administration by gavage began 4 weeks after the last injection, and samples were taken after administration for 8 weeks. Hematoxylin-eosin staining was conducted to reveal the histopathological changes of the femoral head, and the number of adipocytes, the rate of empty bone lacunae, and the trabecular area were calculated. Micro-computed tomography was used for revealing the histological and histomorphometrical changes of the femoral head. Enzyme-linked immunosorbent assay was employed to measure the serum levels of triglyceride (TG), total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), apolipoprotein A1 (ApoA1), and apolipoprotein B (ApoB). At the same time, the femoral head was collected for oxylipidomic and transcriptomic detection. The differential metabolites and differential genes were enriched and analyzed, and the target genes regulating lipid metabolism were predicted. The predicted target proteins were further verified by molecular docking, immunohistochemistry, and Western blot. ResultsCompared with the normal group, the model group showcased thinning of the femoral head, trabecular fracture, karyopyknosis, subchondral cystic degeneration, increases in the number of adipocytes and the rate of empty bone lacunae (P<0.01), a reduction in the trabecular area (P<0.01), decreases in BMD, Tb.Th, Tb.N, and BV/TV, and increases in Tb.Sp and BS/BV (P<0.01). Compared with the model group, the JPHGP groups showed no obvious thinning of the femoral head or subchondroidal cystic degeneration. The high- and medium-dose JPHGP groups presented declines in the number of adipocytes and the rate of empty bone lacunae, an increase in the trabecular area (P<0.05, P<0.01), rises in BMD, Tb.Th, Tb.N, and BV/TV, and decreases in Tb.Sp and BS/BV (P<0.05, P<0.01). Compared with the normal group, the model group showcased raised serum levels of TG, TC, LDL, and ApoB and lowered serum levels of HDL and ApoA1 (P<0.01). Compared with the model group, the JPHGP groups had lowered serum levels of TG, TC, LDL, and ApoB (P<0.05, P<0.01) and a risen serum level of ApoA1 (P<0.05, P<0.01). Moreover, the serum level of HDL in the high-dose JPHGP group increased (P<0.01). A total of 19 different metabolites of disease set and drug set were screened out by oxylipidomics of the femoral head, and 119 core genes with restored expression were detected by transcriptomics. The enriched pathways were mainly concentrated in inflammation, lipids, apoptosis, and osteoclast differentiation. Molecular docking, immunohistochemistry, and Western blot results showed that compared with the normal group, the model group displayed increased content of 5-lipoxygenase (5-LO) and peroxisome proliferator-activated receptor γ (PPARγ) in the femoral head (P<0.01). Compared with the model group, medium- and high-dose JPHGP reduced the content of 5-LO and PPARγ (P<0.05, P<0.01). ConclusionJPHGP can restore the levels of oxidized lipid metabolites by regulating the 5-LO-PPARγ axis to treat SONFH in rats. Relevant studies provide experimental evidence for the efficacy mechanism of JPHGP in the treatment of SONFH.
9.Exploring Molecular Mechanism of Gypenoside L against Ovarian Cancer Based on Ferroptosis Pathway Mediated by Mature-tRNA-Asp-GTC/ATF3-LPCAT3
Jingxuan ZHU ; Jiao ZHAO ; Qun WANG ; Xiaofei SUN ; Jiaxin WANG ; Hongda ZHANG ; Nan SONG
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):107-117
ObjectiveTo investigate the role of mature-tRNA-Asp-GTC and pre-tRNA-Arg-TCT in the ferroptosis phenotype of ovarian cancer (OC) cells and the regulatory mechanism of gypenoside L (Gyp-L) on mature-tRNA-Asp-GTC and pre-tRNA-Arg-TCT in OC cells. MethodsThe proliferation of human ovarian adenocarcinoma OVCAR3 cells was detected by cell counting kit-8 (CCK-8) assay, and the half-maximal inhibitory concentration (IC50) values of cisplatin (DDP), Gyp-L, and DDP in the presence of Gyp-L were calculated to determine the intervention concentration for subsequent experiments. Cell cloning assay and scratch assay reflected the proliferation and migration ability of OVCAR3 cells. PANDORA-seq small RNA sequencing was used to detect the differentially expressed transfer RNA-derived small RNAs (tsRNAs) in the cells after Gyp-L intervention, and the corresponding target genes of the tsRNAs were found by the RNAhybrid software. Malondialdehyde (MDA), glutathione (GSH), and lipid peroxide (LPO) levels were measured by colorimetry or enzyme linked immunosorbent assay (ELISA) method, Fe2+ content by FerroOrange fluorescent probe, and reactive oxygen species (ROS) content by DCFH-DA fluorescent probe to reflect the occurrence of ferroptosis in OVCAR3 cells. OVCAR3 cells were divided into a control group, a 50 µmol·L-1 Gyp-L group, and a 100 µmol·L-1 Gyp-L group. Quantitative real-time polymerase chain reaction (PCR) was performed to detect the expression of mature-tRNA-Asp-GTC, mature-tRNA-Leu-CAA, mature-mt_tRNA-Tyr-GTA_5_end, mature-tRNA-Val-CAC, mature-mt_tRNA-Glu-TTC, pre-tRNA-Arg-TCT, mature-tRNA-Asn-GTT, hydroxymethylbilane synthase (HMBS), Wnt, β-catenin, glutathione peroxidase 4 (GPX4), Kelch-like ECH-associated protein 1 (KEAP1), nuclear factor erythroid 2-related factor 2 (Nrf2), activating transcription factor 3 (ATF3), cystine/glutamate antiporter xCT, lysophosphatidylcholine acyltransferase 3 (LPCAT3), and arachidonate 15-lipoxygenase (ALOX15). Western blot was performed to detect the expression of HMBS, Wnt, β-catenin, GPX4, KEAP1, Nrf2, ATF3, xCT, LPCAT3, and ALOX15 proteins. ResultsThe 50 µmol·L-1 Gyp-L, 100 µmol·L-1 Gyp-L, DDP, 50 µmol·L-1 Gyp-L+DDP, and 100 µmol·L-1 Gyp-L+DDP groups showed significantly inhibited proliferation and migration of OVCAR3 cells (P<0.05) and exacerbated cell ferroptosis as reflected by the increase in the content of ROS, MDA, LPO, and Fe2+, as well as a decrease in the content of GSH (P<0.05). Compared with the control group, Gyp-L effectively interfered with the expression of 25 tsRNAs in OVCAR3 cells (P<0.05, |log2Fc|>1). Pre-tRNA-Arg-TCT/HMBS/Wnt/β-catenin/GPX4, pre-tRNA-Arg-TCT/KEAP1/NRF2/xCT, mature-tRNA-Asp-GTC/ATF3/KEAP1/NRF2/xCT, and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 axial expression was significantly aberrant after Gyp-L intervention (P<0.05). ConclusionThe pre-tRNA-Arg-TCT/HMBS/Wnt/β-catenin/GPX4, pre-tRNA-Arg-TCT/KEAP1/Nrf2/xCT, mature-tRNA-Asp-GTC/ATF3/KEAP1/Nrf2/xCT, and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 signaling pathways are involved in OC development. Gyp-L inhibits OC development by activating OVCAR3 cell ferroptosis onset mainly through the mature-tRNA-Asp-GTC/ATF3/KEAP1/Nrf2/xCT and mature-tRNA-Asp-GTC/LPCAT3/ALOX15 signaling axes.
10.Oxylipidomics Combined with Transcriptomics Reveals Mechanism of Jianpi Huogu Prescription in Treating Steroid-induced Osteonecrosis of Femoral Head in Rats
Lili WANG ; Qun LI ; Zhixing HU ; Qianqian YAN ; Liting XU ; Xiaoxiao WANG ; Chunyan ZHU ; Yanqiong ZHANG ; Weiheng CHEN ; Haijun HE ; Chunfang LIU ; Na LIN
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(11):190-199
ObjectiveTo unveil the mechanism of Jianpi Huogu prescription (JPHGP) in ameliorating the dyslipidemia of steroid-induced osteonecrosis of the femur head (SONFH) by oxylipidomics combined with transcriptomics. MethodsSixty SD rats were assigned into normal, model, low-, medium-, and high-dose (2.5, 5, 10 g·kg-1, respectively) JPHGP, and Jiangushengwan (1.53 g·kg-1) groups. Lipopolysaccharide was injected into the tail vein at a dose of 20 μg·kg-1 on days 1 and 2, and methylprednisolone sodium succinate was injected at a dose of 40 mg·kg-1 into the buttock muscle on days 3 to 5. The normal group received an equal volume of normal saline. Drug administration by gavage began 4 weeks after the last injection, and samples were taken after administration for 8 weeks. Hematoxylin-eosin staining was conducted to reveal the histopathological changes of the femoral head, and the number of adipocytes, the rate of empty bone lacunae, and the trabecular area were calculated. Micro-computed tomography was used for revealing the histological and histomorphometrical changes of the femoral head. Enzyme-linked immunosorbent assay was employed to measure the serum levels of triglyceride (TG), total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), apolipoprotein A1 (ApoA1), and apolipoprotein B (ApoB). At the same time, the femoral head was collected for oxylipidomic and transcriptomic detection. The differential metabolites and differential genes were enriched and analyzed, and the target genes regulating lipid metabolism were predicted. The predicted target proteins were further verified by molecular docking, immunohistochemistry, and Western blot. ResultsCompared with the normal group, the model group showcased thinning of the femoral head, trabecular fracture, karyopyknosis, subchondral cystic degeneration, increases in the number of adipocytes and the rate of empty bone lacunae (P<0.01), a reduction in the trabecular area (P<0.01), decreases in BMD, Tb.Th, Tb.N, and BV/TV, and increases in Tb.Sp and BS/BV (P<0.01). Compared with the model group, the JPHGP groups showed no obvious thinning of the femoral head or subchondroidal cystic degeneration. The high- and medium-dose JPHGP groups presented declines in the number of adipocytes and the rate of empty bone lacunae, an increase in the trabecular area (P<0.05, P<0.01), rises in BMD, Tb.Th, Tb.N, and BV/TV, and decreases in Tb.Sp and BS/BV (P<0.05, P<0.01). Compared with the normal group, the model group showcased raised serum levels of TG, TC, LDL, and ApoB and lowered serum levels of HDL and ApoA1 (P<0.01). Compared with the model group, the JPHGP groups had lowered serum levels of TG, TC, LDL, and ApoB (P<0.05, P<0.01) and a risen serum level of ApoA1 (P<0.05, P<0.01). Moreover, the serum level of HDL in the high-dose JPHGP group increased (P<0.01). A total of 19 different metabolites of disease set and drug set were screened out by oxylipidomics of the femoral head, and 119 core genes with restored expression were detected by transcriptomics. The enriched pathways were mainly concentrated in inflammation, lipids, apoptosis, and osteoclast differentiation. Molecular docking, immunohistochemistry, and Western blot results showed that compared with the normal group, the model group displayed increased content of 5-lipoxygenase (5-LO) and peroxisome proliferator-activated receptor γ (PPARγ) in the femoral head (P<0.01). Compared with the model group, medium- and high-dose JPHGP reduced the content of 5-LO and PPARγ (P<0.05, P<0.01). ConclusionJPHGP can restore the levels of oxidized lipid metabolites by regulating the 5-LO-PPARγ axis to treat SONFH in rats. Relevant studies provide experimental evidence for the efficacy mechanism of JPHGP in the treatment of SONFH.


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