1.Zhenwutang Ameliorates Diabetic Kidney Disease in Mice with Spleen-kidney Yang Deficiency via Nrf2/HO-1/GPX4 Signaling Pathway
Zhe ZHAO ; Guangshun CHEN ; Min BAI ; Yuqiu JIN ; Mengyuan TIAN ; Bing SONG ; Zhenhua LIU ; Yanying ZHANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(15):29-37
ObjectiveTo investigate the effect and mechanism of Zhenwutang on renal oxidative damage in the mouse model of diabetic kidney disease with the syndrome of spleen-kidney Yang deficiency via the nuclear factor erythroid 2-related factor-2 (Nrf2)/heme oxygenase-1 (HO-1)/glutathione peroxidase 4 (GPX4) signaling pathway. MethodTwenty-five 7-week-old SPF-grade male db/m mice and 95 7-week-old SPF-grade male db/db mice were adaptively fed for a week. A blank group was set with the db/m mice without treatment, and the other mice were administrated with Rhei Radix et Rhizoma decoction and hydrocortisone for the modeling of diabetic kidney disease with the syndrome of spleen-kidney Yang deficiency. The modeled mice were randomized into the model, irbesartan (25 mg·kg-1), and high-, medium-, low-dose (33.8, 16.9, 8.45 g·kg-1) Zhenwutang groups (n=15) and administrated with corresponding drugs for 8 weeks. The survival status of mice was observed, and the traditional Chinese medicine (TCM) syndrome score was recorded. The indicators related to spleen-kidney Yang deficiency, fasting blood glucose (FBG), and renal function indicators were determined. Hematoxylin-eosin staining was employed to observe the histopathological changes of the renal tissue in each group. Biochemical kits were used to determine the oxidative stress-related indicators in the renal tissue. Real-time polymerase chain reaction and Western blotting were employed to determine the mRNA and protein levels, respectively, of Nrf2, HO-1, glutamate-cysteine ligase catalytic subunit (GCLC), and GPX4 in the renal tissue of mice in each group. ResultCompared with the blank group, the modeling increased the TCM syndrome score (P<0.05), elevated the estradiol (E2) and FBG levels (P<0.05), lowered the testosterone (T), triiodothyronine (T3), and tetraiodothyronine (T4) levels (P<0.05), and weakened the renal function (P<0.05). In addition, the modeling led to glomerular hypertrophy and glomerular mesangial and basal thickening, decreased the catalase (CAT) activity, total antioxidant capacity (T-AOC), and glutathione (GSH) content (P<0.05), increased the malondialdehyde (MDA) content (P<0.05), and down-regulated the mRNA and protein levels of Nrf2, HO-1, GCLC, and GPX4 in the renal tissue (P<0.05). Compared with the model group, high and medium doses of Zhenwutang decreased the TCM syndrome score and E2 content (P<0.05), increased the T, T3, and T4 content (P<0.05), improved the renal function (P<0.05), alleviated the pathological changes in the renal tissue, increased CAT, T-AOC, and GSH (P<0.05), reduced MDA (P<0.05), and up-regulated the mRNA and protein levels of Nrf2, HO-1, GCLC, and GPX4 in the renal tissue (P<0.05). ConclusionZhenwutang can improve the general state and renal function and reduce the oxidative damage and pathological changes in the renal tissue of db/db mice with spleen-kidney Yang deficiency by regulating the Nrf2/HO-1/GPX4 signaling pathway.
2.Cost-utility analysis of abemaciclib,palbociclib and ribociclib as first-line treatment in hormone receptor-positive advanced breast cancer
Mengyuan LI ; Xin GUAN ; Xinyue JI ; Yufei WANG ; Lei TIAN
China Pharmacy 2024;35(16):2002-2008
OBJECTIVE To analyze the cost-effectiveness of abemaciclib, palbociclib and ribociclib combined with aromatase inhibitors (AI) in first-line treatment of hormone receptor-positive (HR+) advanced breast cancer from the perspective of Chinese medical system. METHODS The 20-year disease course of the patients was simulated by the partitioned survival model, and the simulation period was determined to be 4 weeks, the model output was the total cost and quality-adjusted life year (QALY), the cost and effect were discounted at a discount rate of 5%. A network meta-analysis was constructed by systematically searching relevant clinical trials to obtain the efficacy parameters of abemaciclib, palbociclib and ribociclib combined with AI. Survival fitting and extrapolation were performed based on the survival curve of the placebo group in MONALEESA-2 trial. Cost-effectiveness was assessed by incremental cost-effectiveness ratio (ICER) and incremental net monetary benefit (INMB), with a willingness-to-pay threshold of 3 times China’s per capita gross domestic product (GDP) in 2023; one-way sensitivity analysis and probability sensitivity analysis were used to detect the influence of parameters on the results and the robustness of the incremental analysis results. RESULTS In the 20-year simulation, compared with palbociclib+AI scheme, the ICER of ribociclib+AI scheme was 58 558.38 yuan/QALY and the INMB was 62 988.20 yuan. Compared with ribociclib+AI scheme, the ICER of abemaciclib+AI scheme was 264 928.34 yuan/QALY and the INMB was 344.84 yuan. One-way sensitivity analysis showed that the incremental analysis results of abemaciclib+AI scheme compared to ribociclib+AI scheme were not robust. Probabilistic sensitivity analysis confirmed that the probability of ribociclib+AI scheme becoming the most economical was the highest when the threshold was 1-3 times China’s per capita GDP in 2023. CONCLUSIONS Ribociclib+AI scheme is more likely to be the most economical first-line treatment than abemaciclib+AI scheme and palbociclib+AI scheme in Chinese patients with HR+ advanced breast cancer when threshold is 1-3 times China’s per capita GDP in 2023.
3.Ethical conflicts in interprofessional collaboration among nurses:a scoping review
Mengyuan LIU ; Lingyun TIAN ; Jing JIANG ; Xinyu FENG ; Weijuan LI ; Hui LUO ; Yinglan LI
Chinese Journal of Nursing 2024;59(9):1138-1145
Objective The scope of related research on ethical conflicts in the interprofessional collaboration in nursing was reviewed,so as to summarize the obstacles and coping strategies that lead to ethical conflicts in interprofessional collaboration and provide references for promoting nurse engagement in interprofessional collaboration.Methods Based on the methodological framework of the scope review,we systematically searched domestic and foreign databases including the Cochrane Library,CINAHL,Embase,PubMed,Web of Science,CNKI,VIP,Wanfang and SinoMed.The time limit for database retrieval was from the establishment of each database to March 2023.The selected studies were summarized and analyzed.Results Totally 13 articles published between 1991 and 2022 were included.The obstacle factors that lead to ethical conflicts in nurse engagement of interprofessional collaboration can be divided into 3 categories,including personal factors(insufficient professional knowledge,differences in professional values),interprofessional factors(imbalanced power between professions,lack of respect and collaboration between cooperators)and environmental factors(insufficient resources and staffing,high-intensity workload,and high-pressure work environment).At the same time,in view of these 3 aspects,it puts forward some countermeasures,such as enhancing professional knowledge,strengthening interprofessional education,improving understanding and cooperation among medical workers in different wards,providing medical practitioners with a team-based,ethical work environment that facilitates interprofessional collaborations and open dialogues.Conclusion It is of great significance for nurses to get involved in interprofessional collaborations,in order to ensure high-quality nursing services.Further studies are needed for the development of education and the core competency framework construction for interprofessional collaborations in nursing.More attention should be paid to develop the organizational atmosphere at the same time,so as to continuously improve nurse'capabilities in interprofessional collaborations.
4.Effects of Huatan Quyu Decoction on cognitive function of vascular dementia rats by regulating Wnt/β-catenin signal pathway
Mengyuan LIU ; Yongjun FANG ; Yali HU ; Pengfang WEI ; Sen QIAO ; Yuqian TIAN ; Xinya ZHAO ; Hui LIU ; Jingyuan KONG ; Xiaona ZHU
International Journal of Traditional Chinese Medicine 2024;46(10):1310-1315
Objective:To observe the effects of Huatan Quyu Decoction on the protein expressions of β-catenin and GSK-3 β and the expression of anticardiolipin antibody and β-amyloid protein related to cognitive function in rats with vascular dementia based on Wnt/β-catenin signal pathway.Methods:A total of 96 male SD rats were divided into blank group, model group, Donepezil hydrochloride group and Huatan Quyu Decoction low-, midium-, high-dosage group according to random number table method, with 16 rats in each group. Except for the blank group, the rat model of vascular dementia was prepared by modified 2-VO method. Huatan Quyu Decoction low-, medium- and high-dosage groups were administrated with Huatan Quyu Decoction 6.1, 12.1 and 24.2 g/kg, respectively; the Western medicine group was administrated with Donepezil hydrochloride 0.5 mg/kg; the blank group and the model group were administrated with the same amount of normal saline for 28 consecutive days. On the 1st, 7th, 14th and 28th day after administration, the learning and memory ability of rats was evaluated by Morris water maze test, the levels of ACA and Aβ in serum were measured by enzyme linked immunosorbent assay (ELISA), and the expressions of β-catenin and GSK-3β proteins related to Wnt/β-catenin signal pathway in hippocampus were measured by Western blot.Results:Compared with model group, the escape latency was shortened in the Huatan Quyu Decoction high-dosage group and Donepezil group on 7 and 14 days of administration ( P<0.05), and the times of crossing the platform increased in Huatan Quyu Decoction high-dosage group on 1 and 28 days of administration ( P<0.05). Compared with model group, the serum ACA level in Donepezil group, Huatan Quyu Decoction medium- and high-dosage groups decreased at day 1, 7, 14 and 28 after administration ( P<0.05). The serum Aβ level in Donepezil group, Huatan Quyu Decoction medium- and high-dosage groups decreased at 7, 14 and 28 days after administration ( P<0.05); On the 14th and 28th days after administration, the levels of ACA and Aβ in TCM low-dosage group decreased ( P<0.05). Compared with model group, the expression of β-catenin protein in hippocampus of Donepezil group and Huatan Quyu Decoction medium- and high-dosage groups increased ( P<0.05), while the expression of GSK-3β in hippocampus of Donepezil group and Huatan Quyu Decoction low-, medium- and high-dosage groups decreased ( P<0.01). Conclusion:Huatan Quyu Decoction can activate the Wnt/β-catenin signaling pathway, up-regulate the expression of β-catenin protein in hippocampal tissue of rats, inhibit the expression of GSK-3β, reduce the levels of ACA and Aβ in serum of rats, and improve the cognitive function of rats with vascular dementia.
5.Relationship between medical staff reading quality and hospital humanistic construction:a survey of reading habits of a public hospital staff
Shengnan YE ; Yirong KANG ; Jun ZHOU ; Mengyuan TIAN ; Longyu XU
Modern Hospital 2024;24(5):688-690,694
Reading is an important way for acquiring knowledge,enhancing humanistic literacy,and alleviating negative moods.This paper,based on a survey of the reading habits of medical staff at a public hospital with 1 508 valid samples,found that the reading preferences were closely associated with factors such as educational background,age,job position,gender,and length of service.Drawing from these insights,this paper proposed recommendations to improve the quantity and quality of read-ing among medical professionals.Additionally,suggestions were made for the construction of a humanistic environment and cul-tural development within public hospitals,aiming to foster a favorable cultural atmosphere and enhance the humanistic care pro-vided to patients.
6.A study on the standardization and effectiveness of the use of trade union funds in public hospitals with the principle of adaptation to local hospital:a case study of a third-grade public hospital in Beijing
Shengnan YE ; Yirong KANG ; Mengyuan TIAN ; Jun ZHOU
Modern Hospital 2024;24(9):1411-1413,1418
Based on the labor union's budget data of a public tertiary hospital in Beijing from 2019 to 2023,this article explores and studies the management of union funds in public hospitals from multiple perspectives such as budget and final ac-count management,performance evaluation,and union fund distribution.It clarifies the specific measures that can improve the accuracy of hospital union budget management,establish effective division of labor meetings and performance management mecha-nisms for club fund utilization,improve the dual review mechanism of internal and external union funds,and explore the path to improve the use of public hospital funds.
7.Production and characterization of a novel aminopeptidase A from Lactococcus lactis.
Xin TIAN ; Jinzhou LIU ; Zhonghui HE ; Linfang CHEN ; Mengyuan LIU
Chinese Journal of Biotechnology 2023;39(8):3494-3507
Aminopeptidase A (Pep A) is a metal-dependent enzyme that specifically hydrolyze peptides with the N-terminal amino acids glutamic acid (Glu) and aspartic acid (Asp). A possible application of PepA is the hydrolysis of Glu/Asp-rich food proteins such as wheat gluten and casein, increasing the flavor and solubility of food protein. In the present study, the gene encoding a Pep A from Lactococcus lactis ssp. lactis IL1403 was synthesized and introduced into Pichia pastoris GS115 (His4). Lc-Pep A was successfully expressed and secreted to the culture medium, followed by identification and purification to homogeneity. Characteristics study demonstrated that Lc-Pep A could specifically hydrolyze the substrates Glu-pNA and Asp-pNA with similar catalytic activity, and this was further confirmed by the kinetics parameters measured. Additionally, Lc-Pep A showed a broad thermostability and pH stability with an optimum temperature of 60 ℃ and an optimum pH of 8.0. The enzyme activity of Lc-Pep A was activated by metal ions Co2+, Mn2+, and Zn2+ but was strongly inhibited by Ni2+and Cu2+. The routine proteinase inhibitor had no effect on the activity of Lc-Pep A. However, Lc-Pep A was strongly inhibited by the metallopeptidase inhibitor, EDTA, and disulfide bond-reducing agents. The study may facilitate production and application of Lc-Pep A.
Glutamyl Aminopeptidase
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Lactococcus lactis/genetics*
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Biological Transport
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Culture Media
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Glutamic Acid
8.To Explore the Mechanism of Ferulic Acid Against Liver Fibrosis Based on Network Pharmacology and Cell Experiment
Mohan SUN ; Qiuju ZHANG ; Zhe ZHAO ; Yuqiu JIN ; Mengyuan TIAN ; Guangshun CHEN
World Science and Technology-Modernization of Traditional Chinese Medicine 2023;25(12):3908-3919
Objective To study the mechanism of ferulic acid(FA)on hepatic fibrosis(HF)based on network pharmacology,and establish an in vitro model of rat hepatic stellate Cell-T6(HSC-T6)according to the results.Methods The potential targets of FA were screened through PubChem,swisstargetprediction and pharmmapper,and overlapped with the FA targets screened in disgenet,genecards and OMIM.Then,protein protein interaction(PPI)was analyzed by using string platform.Gene ontology(go)and Kyoto encyclopedia of genes and genomes(KEGG)pathway enrichment analysis were carried out for key targets by using R64 4.0.3,and the"component target disease"network diagram was constructed by Cytoscape 3.7.2 software.Based on this,the proliferation of HSC-T6 was detected by cell counting kit-8(CCK-8)method,and the grouping was determined:blank group and low-dose group(100 μg·mL-1 FA),medium dose group(200 μg·mL-1 FA),high dose group(400 μg·mL-1 FA)and positive control group(200 μg·mL-1 colchicine),the migration ability of HSC-T6 was detected by scratch test,and the content of HSC-T6 was detected by enzyme linked immunosorbent assay(ELISA)α-Alpha smooth muscle actin,α-Flow cytometry was used to detect the changes of HSC-T6 cycle,quantitative real time polymerase chain reaction(qRT-PCR)was used to detect the relative expression of JAK2 and STAT3 mRNA,and Western Blot was used to detect the molecular expression of JAK2 and STAT3 protein.Results 254 intersection targets of FA and HF were obtained.The core targets were signal transducer and activvator of Transcription(STAT3),albumin(ALB),protein kinase B(AKT1),tumor suppressor protein p53(TP53),epidermal growth factor receptor(EGFR)and caspase-3(CASP3).KEGG analysis showed that the action pathway of FA on HF mainly involved phosphatidylinositol 3 kinase protein kinase B(PI3K-Akt),vascular endothelial growth factor(VEGF),Janus kinase/signal transducer and activator of transcription(JAK/STAT)Tumor necrosis factor(TNF)and other pathways.The experimental results showed that in CCK-8 experiment,scratch experiment and ELISA experiment,compared with the blank group,the cell proliferation rate,migration ability and the expression of α-SMA protein decreased significantly(P<0.05).Compared with the blank group,the cycle arrest rate of low,medium and high dose groups and positive control group increased significantly(P<0.05).Compared with the blank group,the molecular weight and mRNA expression of JAK2 and STAT3 protein in low,medium and high dose groups and positive control group decreased gradually(P<0.05).Conclusion FA has the characteristics of multi-channel and multi-target.FA may inhibit the apoptosis of hepatic stellate cell(HSC)by down regulating JAK2 and STAT3 targets.
9.Chinese Medicine Regulates NLRP3 Inflammasomes to Treat Diabetic Nephropathy: A Review
Zhe ZHAO ; Min BAI ; Yuqiu JIN ; Mengyuan TIAN ; Guangshun CHEN ; Zhenhua LIU
Chinese Journal of Experimental Traditional Medical Formulae 2023;29(23):197-206
Diabetic nephropathy (DN), a major cause of chronic kidney disease (CKD), aggravates the prevalence of end-stage renal disease (ESRD) and threatens human health. The pathogenesis of DN is complex, in which inflammation is a key pathological link in the cascade injury. Therefore, the treatment targeting inflammation helps to delay the progression of DN. NOD-like receptor protein 3 (NLRP3), a classical proteasome, acts as an inducer of innate immune responses. The activated NLRP3 inflammasomes produce and release inflammatory mediators to trigger pyroptosis and uncontrolled autophagy and mediate the stress signals promoting renal fibrosis, thus participating in the development and progression of DN. The NLRP3 inflammasome as a core site inducing inflammation is widely involved in DN progression and may be a novel target. The active components and compound prescriptions of Chinese medicines are increasingly applied in the prevention and treatment of DN. The latest studies have discovered that Chinese medicines can treat DN by regulating the activation of NLRP3 inflammasomes. Although studies have been conducted to explore the mechanism of Chinese medicines in the treatment of DN via NLRP3 inflammasome, the systematic review remains to be carried out. This paper reviews the relevant publications in recent years and introduces the research progress from the assembly and activation of NLRP3 inflammasomes, the mechanism of NLRP3 inflammasomes in the treatment of DN, and the regulation of NLRP3 inflammasomes by Chinese medicines for the prevention and treatment of DN, aiming to lay a foundation for the relevant studies and provide new targets and strategies for the prevention and treatment of DN.
10.Traditional Chinese Medicine Against Liver Fibrosis Based on Autophagy: A Review
Mengyuan TIAN ; Ming ZHANG ; Zhe ZHAO ; Yuqiu JIN ; Guangshun CHEN
Chinese Journal of Experimental Traditional Medical Formulae 2023;29(21):255-263
Hepatic fibrosis (HF) is a widespread disease caused by various forms of chronic liver injury, significantly impacting human health. HF often has an insidious onset with inconspicuous symptoms, but in its advanced stages, it can progress to cirrhosis or even hepatocellular carcinoma. The pathogenic mechanisms of HF are highly complex, primarily characterized by excessive extracellular matrix (ECM) deposition. Autophagy is a lysosome-mediated degradation system employed by cells to recycle cellular contents, eliminate aggregated proteins, damaged organelles, and invading pathogens (such as viruses and bacteria) to maintain normal cellular function and dynamic balance. Autophagy can regulate various signaling pathways and factors, including mammalian target of rapamycin (mTOR), adenosine monophosphate-activated protein kinase (AMPK), and transforming growth factor-β (TGF-β), to reduce the activation of hepatic stellate cells (HSCs) and hepatocyte necrosis and apoptosis, thereby mitigating ECM deposition and slowing the progression of HF. Numerous studies also suggest that traditional Chinese medicine (TCM) can effectively treat HF, and its mechanism of action may be related to autophagy. This article provides a review by summarizing recent literature in China and abroad on the mechanisms of autophagy, related signaling factors and pathways, as well as the role of TCM in regulating autophagy for the prevention and treatment of HF, aiming to offer insights and references for the development of TCM in the prevention and clinical rational medication in the treatment of HF.

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