Xiaoku Ran

Dr. Xiaoku Ran

orcid

Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2021 in Oxidative Medicine and Cellular Longevity
Verified
Journal Article
Open access
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XLXueying Liu
Xueying Liu
JWJian Wang
Jian Wang
PDPeiyuan Dou
Peiyuan Dou
XZXu Zhang
Xu Zhang
XRXiaoku Ran
Xiaoku Ran
DDDe qiang Dou
De qiang Dou
Silicosis remains one of the most serious diseases worldwide, with no effective drug for its treatment. Our research results have indicated that arctiin and arctigenin could increase the mitochondrial membrane potential, which in turn reduces the production of reactive oxygen species (ROS), blocks the polarization of macrophages, and inhibits the differentiation of myofibroblasts to reduce oxidative stress, inflammation, and fibrosis. Further, our study revealed that arctiin and arctigenin suppressed the activation of NLRP3 inflammasome through the TLR‐4/Myd88/NF‐κB pathway and the silica‐induced secretion of TNF‐α, IL‐1β, TGF‐β, and α‐SMA. Besides, the silica‐induced increase in the levels of serum ceruloplasmin and HYP was also inhibited. Results of metabolomics indicated that arctiin and arctigenin could regulate the abnormal metabolic pathways associated with the development of silicosis, which involve pantothenate and CoA biosynthesis, cysteine and methionine metabolism, linoleic acid metabolism, and arginine and proline metabolism successively. Furthermore, the analysis of metabolomics, together with network topological analysis in different phases of silicosis, revealed that urine myristic acid, serum 4‐hydroxyproline, and L‐arginine could be regarded as diagnosis biomarkers in the early phase and formation of pulmonary fibrosis in the latter phases of silicosis. Arctiin and arctigenin could downregulate the increased levels of myristic acid in the early phase and serum 4‐hydroxyproline in the latter phase of silicosis. Interestingly, the integration of TLR‐4/NLRP3/TGF‐β signaling and metabolomics verified the importance of macrophage polarization in the silicosis fibrosis process. To the best of our knowledge, this is the first study reporting that arctiin and arctigenin both can ameliorate silicosis effectively, and the former is a little stronger than its aglycone arctigenin because of its high oral bioavailability, low toxicity, and multimolecular active metabolites as determined by AdmetSAR and molecular docking analysis.

30 March 2023 in Journal of Ethnopharmacology
Verified
Journal Article
Closed access
XZXu Zhang
Xu Zhang
XWXiaotong Wang
Xiaotong Wang
RSRui Shi
Rui Shi
XRXiaoku Ran
Xiaoku Ran
XHXiahong He
Xiahong He
DDDeqiang Dou
Deqiang Dou

30 October 2019 in Molecules
Verified
Journal Article
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YWYu-Meng Wang
Yu-Meng Wang
XRXiaoku Ran
Xiaoku Ran
MRMuhammad Riaz
Muhammad Riaz
MYMiao Yu
Miao Yu
QCQian Cai
Qian Cai
DCDe-Cheng Cai
De-Cheng Cai
Tagetespatula L. is a widely cultivated herbal medicinal plant in China and other countries. In this study, two new 2, 3-dihydrobenzofuran glucosides (1, 2) and fourteen known metabolites (3–16) were isolated from the stems and leaves of T. patula (SLT). The chemical structures of the isolated compounds were characterized comprehensively based on one- and two-dimensional NMR spectroscopy and high resolution mass spectrometry. Absolute configurations of compounds 1 and 2 were determined by ECD calculations. Compounds 1 and 2 exhibited moderate in vitro inhibitory activities against human gastric cancer cell lines (AGS) with IC50 values of 41.20 μmol/L and 30.43 μmol/L, respectively. The fingerprint profiles of stems and leaves of T. patula with three color types of flowers (Janie Yellow Bright, Jinmen Orange, Shouyao Red and Yellow color) were established by high-performance liquid chromatography (HPLC). Ten different batches of stems and leaves were examined as follow: Shouyao Red and Yellow color (1, 2, 3), Janie Yellow Bright (4, 5, 6, 7) and Jinmen Orange (8, 9, 10). Twenty-two common peaks were identified with similarity values ranging from 0.910 to 0.977. Meanwhile, the average peak area of SLT in the three types of flowers was different and it was the highest in Janie Yellow Bright.

18 June 2019 in Molecules
Verified
Journal Article
Open access
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XLXueying Liu
Xueying Liu
XRXiaoku Ran
Xiaoku Ran
MRMuhammad Riaz
Muhammad Riaz
HKHaixue Kuang
Haixue Kuang
DDDe qiang Dou
De qiang Dou
DCDecheng Cai
Decheng Cai
The major objective of this study was to investigate the anti-chronic nonbacterial prostatitis (CNP) mechanism of T. patula by metabolomics and network pharmacology. The study demonstrated that the flavonoids and polysaccharides of T. patula could alleviate prostatitis by improving the level of DHT, reducing the secretion of PSA and TNF-α. Besides, both could enhance Na+/K+-ATPase activity, decrease the O2 consumption, CO2 production, heat production, energy expenditure of rats and promote respiratory exchange ratio of rats. Up to 28 potential biomarkers and 8 key metabolic pathways related to the treatment of CNP were elucidated by the metabolomics analysis, including phenylalanine metabolism, taurine and hypotaurine metabolism, tryptophan metabolism etc. Network pharmacology prediction also reflected the potential mechanism was associated with tryptophan metabolism and energy pathway. Generally, the potential anti-CNP mechanism of flavonoids and polysaccharides of T. patula might be through reducing the expression of inflammation factors, adjusting the level of hormone and regulating the amino acid metabolism, energy metabolism and glucose and lipid metabolism.

18 July 2024 in Frontiers in Pharmacology
Verified
Journal Article
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PDPeiyuan Dou
Peiyuan Dou
LLLinlin Liu
Linlin Liu
MJMozhu Jin
Mozhu Jin
JHJing Huang
Jing Huang
RLRose Makhotso Lekhooa
Rose Makhotso Lekhooa
XYXiaohui Yan
Xiaohui Yan
Introduction: Black ginseng (BG) was processed by “steaming and drying” (generally nine times) repeatedly to produce “rare saponins” and secondary ginsenosides. Both ginseng (GS) and red ginseng (RG) were commonly used in treating heart failure (HF), and the latter was confirmed to be more potent, implying the presence of rare ginsenosides that contribute positively to the treatment of heart failure. Previous research indicated that rare ginsenosides are more abundant in BG than in RG. Consequently, this study aims to investigate the effects of BG and its components on HF to elucidate the active substances and their underlying mechanisms in the treatment of HF.Methods: The effects of BG and its fractions (water-eluted fraction (WEF), total saponin fraction (TSF), and alcohol-eluted fraction (AEF)) on rats with isoproterenol (ISO)-induced HF were explored, and steroids belonging to the hypothalamic–pituitary–adrenal (HPA) and hypothalamic–pituitary–gonadal (HPG) axes were determined quantitatively using the ultra-performance liquid chromatography–triple quadrupole tandem mass spectrometry (UPLC-QqQ-MS/MS) method. In addition, 16S rDNA sequencing was performed on the gut microbiota, followed by GC–MS analysis of short-chain fatty acids (SCFAs), and the biochemical indexes related to energy metabolism and the serum cyclic nucleotide system were also analyzed by ELISA.Results: Based on a thorough evaluation of energy metabolism and the endocrine system, it was observed that the effects of BG components on the hypothalamic–pituitary–thyroid (HPT) and HPA axes were more pronounced. Notably, the treatment efficacy of the low dose of the total saponin fraction (TSFL), water decoction (WD), and high dose of the polysaccharide fraction (PSFH) was superior based on pharmacodynamic indicators such as brain natriuretic peptide (BNP), creatine kinase (CK), and estradiol (E2)/T). Furthermore, the WD and BG components exhibited significant effects on androgens (T and androstenedione (A4)). The TSFL group exerts an anti-inflammatory effect by regulating Lactobacillus/Erysipelotrichales. The WD, PSFH, and TSFL may impact inflammatory cytokines through the gut microbiota (Lactobacillus/Erysipelotrichales) and their metabolites (acetate and butyrate), exerting an anti-inflammatory effect.Discussion: The BG and all its split components demonstrated varying levels of efficacy in alleviating HF, and TSF and PSF exhibited a significant protective effect on HF. The main active components in TSF were revealed to be ginsenosides Rk1, Rk3, 20-(S)-Rg3, and 20-(S)-Rh2 by the H9C2 cell experiment. The decoction of BG and its components exhibited a potent impact on androgen hormones, with an elevation trend. This phenomenon may be attributed to the activation of the eNOS-NO pathway through androgen regulation, thereby contributing to its anti-HF activities. The WD, PSFH, and TSFL may exert anti-inflammatory effects through the intestinal flora (Lactobacillaceae/Erysipelotrichaceae) and its metabolites (acetic acid and butyric acid), which affect the inflammatory factors. The different mechanisms of action of each component of HF also reflect the significance and necessity of the overall role of traditional Chinese medicine (TCM). Our research was the first to report that the E2/T is related to HF and can be used as an indicator to evaluate HF.

4 October 2017 in Bangladesh Journal of Pharmacology
Verified
Journal Article
Open access
PDF file
XLXueying Liu
Xueying Liu
XRXiaoku Ran
Xiaoku Ran
DDDe qiang Dou
De qiang Dou
DCDecheng Cai
Decheng Cai
The effectiveness of water decoction of Tagetes patula was studied against the chronic nonbacterial prostatitis in a rat model induced by estradiol subcuta-neously in a castrated male rat. The low-dose decoction of T. patula significantly ameliorated the prostatitis. The low-dose of polysaccharide and supernatant constituent of T. patula decreased the levels of IL-1?, TNF-?, PSA, and EGF, and improved the levels of testosterone and dihydrotestosterone in vivo. Further, the chemical study indicated that flavonoids were predominant in the supernatant constituent of T. patula. The flavonoids and polysaccha-rides were the effective constituents against prostatitis and this effect may be mediated by keeping hormone balance and a down-regulation of the in?ammatory mediator level of the prostate.Video Clip of Methodology:9 min 43 Sec Full Screen Alternate