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  1. Article ; Online: Short-term mass loads of per- and polyfluoroalkyl substances in a wastewater treatment plant from South China.

    Liu, Si-Si / Cheng, Sheng-Ming / Cai, Qi-Si / Ying, Guang-Guo / Chen, Chang-Er

    Environmental science and pollution research international

    2024  Volume 31, Issue 11, Page(s) 17417–17425

    Abstract: Wastewater treatment plants (WWTPs) are one of the most important sources and sinks for per- and polyfluoroalkyl substances (PFAS). However, limited studies have evaluated short-term temporal variability of PFAS in WWTPs, particularly for their intra-day ...

    Abstract Wastewater treatment plants (WWTPs) are one of the most important sources and sinks for per- and polyfluoroalkyl substances (PFAS). However, limited studies have evaluated short-term temporal variability of PFAS in WWTPs, particularly for their intra-day variations. For this purpose, a time-composite sampling campaign was carried out at a WWTP influent from South China for 1 week. Five out of ten PFAS were found in the influent, i.e., perfluoroheptanoic acid (PFHpA), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorobutane sulfonic acid (PFBS), and perfluorooctanesulfonic acid (PFOS). PFOA was the most domain PFAS whereas PFOS was detected occasionally, which might be associated with the prohibition of PFOS use in China. For the first time, we observed significant intra-day fluctuations in mass fluxes for PFOS. Different from a morning peak of pharmaceuticals reported previously, PFOS mass loads fluctuated sharply at noon and night on the weekdays. Furthermore, the mass fluxes of PFOA on the weekend were significantly elevated. For the other PFAS detected, no significant diurnal variations in mass loads were identified. Correlation analysis indicated that domestic activities (e.g., home cleaning) are likely to be the major source of these perfluorocarboxylic acids especially PFOA. In addition, flow fluxes had little effects on these PFAS mass load. These results can aid in future sampling campaigns and optimizing removal strategies for PFAS in wastewater.
    MeSH term(s) Wastewater ; Alkanesulfonic Acids ; Water Purification ; Fluorocarbons/analysis ; China ; Caprylates
    Chemical Substances Wastewater ; perfluorooctane sulfonic acid (9H2MAI21CL) ; Alkanesulfonic Acids ; perfluorooctanoic acid (947VD76D3L) ; Fluorocarbons ; Caprylates
    Language English
    Publishing date 2024-02-10
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-024-32204-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Effect of nimodipine combined with atorvastatin calcium on microinflammation and oxidative stress levels in patients with cerebral vasospasm after subarachnoid hemorrhage.

    Gan, Ning / Jia, Tong-le / Tian, Nan / Liu, Si-Si / Cao, Shan

    Pakistan journal of medical sciences

    2023  Volume 39, Issue 2, Page(s) 434–438

    Abstract: Objective: To evaluate the effect of nimodipine combined with atorvastatin calcium on the micro inflammation and oxidative stress levels in patients with cerebral vasospasm (CVS) after subarachnoid hemorrhage (SAH) and its clinical implications.: ... ...

    Abstract Objective: To evaluate the effect of nimodipine combined with atorvastatin calcium on the micro inflammation and oxidative stress levels in patients with cerebral vasospasm (CVS) after subarachnoid hemorrhage (SAH) and its clinical implications.
    Methods: A total of 80 patients with CVS caused by SAH who had been admitted to Baoding First Central Hospital from August 2021 to August 2022 were selected and randomly divided into two groups. The control group underwent conventional symptomatic treatment, while the experimental group was administered nimodipine combined with atorvastatin calcium on the basis of conventional treatment. The changes in the micro inflammatory cytokines and oxidative stress factors in the two groups were compared, as well as the differences in clinical efficacy and incidence of adverse drug reactions.
    Result: After treatment, the levels of inflammatory cytokines in the experimental group decreased more significantly than those in the control group (p=0.00). After treatment, the serum levels of oxidative stress factors were obviously higher in the experimental group than in the control group (p=0.00). After treatment, the total efficacy was 77.5% in the experimental group and 55% in the control group, and the difference was statistically significant (p=0.04).
    Conclusions: Nimodipine combined with atorvastatin calcium could significantly improve the clinical symptoms in patients with CVS after SAH, which would be beneficial, safe, and effective for the patient's recovery.
    Language English
    Publishing date 2023-01-14
    Publishing country Pakistan
    Document type Journal Article
    ZDB-ID 2032827-8
    ISSN 1681-715X ; 1682-024X ; 1017-4699
    ISSN (online) 1681-715X
    ISSN 1682-024X ; 1017-4699
    DOI 10.12669/pjms.39.2.6721
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Antimicrobial secondary metabolites from an endophytic fungus Aspergillus polyporicola.

    Liu, Si-Si / Huang, Rong / Zhang, Shou-Peng / Xu, Tang-Chang / Hu, Kun / Wu, Shao-Hua

    Fitoterapia

    2022  Volume 162, Page(s) 105297

    Abstract: Two new nucleoside derivatives, kipukasins O (1) and P (2), one new cyclohexenone derivative, arthropsadiol D (5), and one new natural product, (+)-2,5-dimethyl-3(2H)-benzofuranone (6), together with eleven known compounds (3, 4, 7-15), were obtained ... ...

    Abstract Two new nucleoside derivatives, kipukasins O (1) and P (2), one new cyclohexenone derivative, arthropsadiol D (5), and one new natural product, (+)-2,5-dimethyl-3(2H)-benzofuranone (6), together with eleven known compounds (3, 4, 7-15), were obtained from the culture broth of the endophytic fungus Aspergillus polyporicola R2 isolated from the roots of Synsepalum dulcificum. Among them, the absolute configuration of compound 5 was determined by quantum chemical calculations of NMR chemical shifts and ECD spectrum. The antimicrobial activities of these compounds were evaluated. Compound 11 exhibited obvious inhibitory activity against MRSA, Staphylococcus aureus, Salmonella typhimurium, Botrytis cinerea, and Fusarium graminearum with MIC values of 4, 4, 4, 32, and 16 μg/mL, respectively. Compound 12 exhibited antibacterial activity against S. typhimurium and MRSA with MIC values of 4 and 16 μg/mL. Compound 6 exhibited antifungal activity against F. graminearum with MIC value of 32 μg/mL.
    MeSH term(s) Anti-Bacterial Agents ; Anti-Infective Agents/pharmacology ; Antifungal Agents ; Aspergillus ; Biological Products ; Microbial Sensitivity Tests ; Molecular Structure ; Nucleosides
    Chemical Substances Anti-Bacterial Agents ; Anti-Infective Agents ; Antifungal Agents ; Biological Products ; Nucleosides
    Language English
    Publishing date 2022-09-09
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 412385-2
    ISSN 1873-6971 ; 0367-326X
    ISSN (online) 1873-6971
    ISSN 0367-326X
    DOI 10.1016/j.fitote.2022.105297
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Helicobacter pylori infection induces autophagy via ILK regulation of NOXs-ROS-Nrf2/HO-1-ROS loop.

    Li, Boqing / Lv, Xin / Xu, Zheng / He, Jing / Liu, SiSi / Zhang, Xiaolin / Tong, Xiaohan / Li, Jing / Zhang, Ying

    World journal of microbiology & biotechnology

    2023  Volume 39, Issue 10, Page(s) 284

    Abstract: Reactive oxygen species (ROS) can regulate the occurrence of autophagy, and effective control of the balance between ROS and autophagy may be an important strategy for Helicobacter pylori induced gastric-related diseases. In this study, infection with H. ...

    Abstract Reactive oxygen species (ROS) can regulate the occurrence of autophagy, and effective control of the balance between ROS and autophagy may be an important strategy for Helicobacter pylori induced gastric-related diseases. In this study, infection with H. pylori led to a lower level of ILK phosphorylation and increased ROS generation. Knockdown of ILK enhanced total ROS generation, and upregulated NADPH oxidase (NOX) subunit p22-phox levels. Inhibition of NOXs affected total ROS generation. The inhibition of NOX and ROS generation reduced Nrf2 and HO-1 levels, and knockdown of ILK significantly enhanced Nrf2 levels in H. pylori-infected GES-1 cells. Activation of Nrf2 by DMF decreased ROS levels. Therefore, NOX-dependent ROS production regulated by ILK was essential for activation of Nrf2/HO-1 signaling pathways in H. pylori-infected GES-1 cells. Beclin1, ATG5 and LC3B-II levels were higher both in H. pylori-infected and ILK-knockdown GES-1 cells. In NAC-pretreated GES-1 cells infected with H. pylori, the LC3B-II level was decreased compared to that in cells after H. pylori infection alone. Stable low expression of ILK with further knockdown of Beclin1 or ATG5 significantly reduced LC3B-II levels in GES-1 cells, while with the addition of the autophagy inhibitor chloroquine (CQ), LC3B-II and p62 protein levels were both remarkably upregulated. H. pylori accelerated the accumulation of ROS and further led to the induction of ROS-mediated autophagy by inhibiting ILK levels. Together, these results indicate that H. pylori infection manipulates the NOX-ROS-Nrf2/HO-1-ROS loop to control intracellular oxygen stress and further induced ROS-mediated autophagy by inhibiting ILK levels.
    MeSH term(s) Humans ; Helicobacter pylori ; Helicobacter Infections ; NF-E2-Related Factor 2/genetics ; Reactive Oxygen Species ; Beclin-1/genetics ; Autophagy
    Chemical Substances NF-E2-Related Factor 2 ; Reactive Oxygen Species ; Beclin-1
    Language English
    Publishing date 2023-08-21
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1499109-3
    ISSN 1573-0972 ; 0959-3993
    ISSN (online) 1573-0972
    ISSN 0959-3993
    DOI 10.1007/s11274-023-03710-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Occurrence, fate and ecological risks of 90 typical emerging contaminants in full-scale textile wastewater treatment plants from a large industrial park in Guangxi, Southwest China.

    Liu, Si-Si / You, Wen-Dan / Chen, Chang-Er / Wang, Xin-Yu / Yang, Bin / Ying, Guang-Guo

    Journal of hazardous materials

    2023  Volume 449, Page(s) 131048

    Abstract: Recent industrial relocation in China causes lots of environment concerns including risks of emerging contaminants (ECs). Herein, the occurrence, fate, removal and ecological risks of 34 per- and polyfluoroalkyl substances (PFAS), 17 endocrine disrupting ...

    Abstract Recent industrial relocation in China causes lots of environment concerns including risks of emerging contaminants (ECs). Herein, the occurrence, fate, removal and ecological risks of 34 per- and polyfluoroalkyl substances (PFAS), 17 endocrine disrupting chemicals (EDCs), 16 phthalate esters (PAEs), and 23 polycyclic aromatic hydrocarbons (PAHs) were investigated in two textile WWTPs (conventional and Fenton-modified) from a large textile industrial park in Southwest China. Totally 50 ECs were identified and the levels followed the order of PAEs > EDCs > PFAS ≈ PAHs. The EDCs predominated in textile washing and rinsing wastewater whereas the PAEs did in desizing wastewater. Biphasic correlations of log K
    MeSH term(s) Wastewater ; Waste Disposal, Fluid ; China ; Water Pollutants, Chemical/chemistry ; Sewage/chemistry ; Textiles ; Polycyclic Aromatic Hydrocarbons/analysis ; Water Purification ; Endocrine Disruptors ; Fluorocarbons ; Environmental Monitoring
    Chemical Substances Wastewater ; Water Pollutants, Chemical ; Sewage ; Polycyclic Aromatic Hydrocarbons ; Endocrine Disruptors ; Fluorocarbons
    Language English
    Publishing date 2023-02-20
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1491302-1
    ISSN 1873-3336 ; 0304-3894
    ISSN (online) 1873-3336
    ISSN 0304-3894
    DOI 10.1016/j.jhazmat.2023.131048
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: In Situ

    Huang, Yue-Rui / Liu, Si-Si / Zi, Jin-Xin / Cheng, Sheng-Ming / Li, Jun / Ying, Guang-Guo / Chen, Chang-Er

    Environmental science & technology

    2023  Volume 57, Issue 20, Page(s) 7809–7817

    Abstract: The physicochemical exchange dynamics between the solid and solution phases of per- and polyfluoroalkyl substances (PFAS) in soils needs to be better understood. This study employed ... ...

    Abstract The physicochemical exchange dynamics between the solid and solution phases of per- and polyfluoroalkyl substances (PFAS) in soils needs to be better understood. This study employed an
    MeSH term(s) Soil/chemistry ; Soil Pollutants ; Diffusion ; Kinetics ; Biological Transport ; Environmental Monitoring/methods
    Chemical Substances Soil ; Soil Pollutants
    Language English
    Publishing date 2023-05-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1520-5851
    ISSN (online) 1520-5851
    DOI 10.1021/acs.est.2c09348
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Discovery of Novel Diphenyl Acrylonitrile Derivatives That Promote Adult Rats' Hippocampal Neurogenesis.

    Liu, Si-Si / Ma, Cong-Xuan / Quan, Zheng-Yang / Ding, Jing / Yang, Liang / Liu, Si-Meng / Zhang, He-Ao / Qing, Hong / Liang, Jian-Hua

    International journal of molecular sciences

    2024  Volume 25, Issue 2

    Abstract: We previously ... ...

    Abstract We previously discovered
    MeSH term(s) Rats ; Animals ; Acrylonitrile/pharmacology ; Neurogenesis ; Hippocampus ; Nitriles/pharmacology ; Amides ; Alkenes ; Biphenyl Compounds
    Chemical Substances propylene (AUG1H506LY) ; Acrylonitrile (MP1U0D42PE) ; diphenyl (2L9GJK6MGN) ; Nitriles ; Amides ; Alkenes ; Biphenyl Compounds
    Language English
    Publishing date 2024-01-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms25021241
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  8. Article ; Online: Discovery of a novel lead characterized by a stilbene-extended scaffold against sepsis as soluble epoxide hydrolase inhibitors.

    Feng, Zi-Qiang / Ding, Jing / Zhu, Min-Zhen / Xie, Wei-Song / Liu, Rui-Chen / Liu, Si-Si / Liu, Si-Meng / Yu, Ming-Jia / Zhu, Xin-Hong / Liang, Jian-Hua

    European journal of medicinal chemistry

    2024  Volume 266, Page(s) 116113

    Abstract: Recently, some inhibitors of soluble epoxide hydrolase (sEH) showed limited potential in treating sepsis by increasing survival time, but they have unfortunately failed to improve survival rates. In this study, we initially identified a new hit 11D, ... ...

    Abstract Recently, some inhibitors of soluble epoxide hydrolase (sEH) showed limited potential in treating sepsis by increasing survival time, but they have unfortunately failed to improve survival rates. In this study, we initially identified a new hit 11D, belonging to a natural skeleton known as stilbene and having an IC
    MeSH term(s) Mice ; Humans ; Animals ; Epoxide Hydrolases ; Structure-Activity Relationship ; Liver/metabolism ; Enzyme Inhibitors/pharmacology ; Enzyme Inhibitors/chemistry ; Sepsis/drug therapy
    Chemical Substances Epoxide Hydrolases (EC 3.3.2.-) ; Enzyme Inhibitors
    Language English
    Publishing date 2024-01-03
    Publishing country France
    Document type Journal Article
    ZDB-ID 188597-2
    ISSN 1768-3254 ; 0009-4374 ; 0223-5234
    ISSN (online) 1768-3254
    ISSN 0009-4374 ; 0223-5234
    DOI 10.1016/j.ejmech.2023.116113
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Polyhydroxylated sesquiterpenes and ergostane glycosides produced by the endophytic fungus Xylaria sp. from Azadirachta indica.

    Wang, Jun-Fei / Huang, Rong / Song, Zhi-Qiang / Yang, Qing-Rong / Li, Xin-Peng / Liu, Si-Si / Wu, Shao-Hua

    Phytochemistry

    2022  Volume 199, Page(s) 113188

    Abstract: The investigation of the metabolites from the endophytic fungus Xylaria sp. YM 311647 in solid fermentation resulted in the isolation of six undescribed compounds, namely xylarioxides A-F, respectively. These included one eremophilane sesquiterpene, ... ...

    Abstract The investigation of the metabolites from the endophytic fungus Xylaria sp. YM 311647 in solid fermentation resulted in the isolation of six undescribed compounds, namely xylarioxides A-F, respectively. These included one eremophilane sesquiterpene, three guaiane sesquiterpene glycosides, and two ergostane glycosides. The structures of the compounds were determined by extensive analyses of spectroscopic data, including 1D and 2D NMR, as well as HRESIMS data. The stereochemistry of xylarioxide A was confirmed by X-ray crystallographic analysis. All of the isolated compounds were assayed for their antifungal activities against seven phytopathogenic fungi and two human pathogenic fungi. Among them, xylarioxides A, E and F showed potent activities against the tested phytopathogens. Particularly, xylarioxide E exhibited the highest activity against Gibberella saubinetii, Curvularia lunata, and Colletotrichum gloeosporioides with MIC values of 4, 4, and 8 μg/mL, respectively, which were comparable to the positive control of nystatin. Interestingly, guaiane sesquiterpene glycosides have been rarely reported from fungal sources. Additionally, xylarioxide E represented an unusual naturally occurring 3,4-seco-steroidal glycoside with a seven-membered lactone in ring A.
    MeSH term(s) Azadirachta ; Ergosterol/analogs & derivatives ; Glycosides/pharmacology ; Molecular Structure ; Sesquiterpenes/chemistry ; Sesquiterpenes, Guaiane/chemistry ; Xylariales/chemistry
    Chemical Substances Glycosides ; Sesquiterpenes ; Sesquiterpenes, Guaiane ; ergostane (Y0XC723P4C) ; Ergosterol (Z30RAY509F)
    Language English
    Publishing date 2022-04-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 208884-8
    ISSN 1873-3700 ; 0031-9422
    ISSN (online) 1873-3700
    ISSN 0031-9422
    DOI 10.1016/j.phytochem.2022.113188
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Polyhydroxylated sesquiterpenes and ergostane glycosides produced by the endophytic fungus Xylaria sp. from Azadirachta indica

    Wang, Jun-Fei / Huang, Rong / Song, Zhi-Qiang / Yang, Qing-Rong / Li, Xin-Peng / Liu, Si-Si / Wu, Shao-Hua

    Phytochemistry. 2022 July, v. 199

    2022  

    Abstract: The investigation of the metabolites from the endophytic fungus Xylaria sp. YM 311647 in solid fermentation resulted in the isolation of six undescribed compounds, namely xylarioxides A–F, respectively. These included one eremophilane sesquiterpene, ... ...

    Abstract The investigation of the metabolites from the endophytic fungus Xylaria sp. YM 311647 in solid fermentation resulted in the isolation of six undescribed compounds, namely xylarioxides A–F, respectively. These included one eremophilane sesquiterpene, three guaiane sesquiterpene glycosides, and two ergostane glycosides. The structures of the compounds were determined by extensive analyses of spectroscopic data, including 1D and 2D NMR, as well as HRESIMS data. The stereochemistry of xylarioxide A was confirmed by X-ray crystallographic analysis. All of the isolated compounds were assayed for their antifungal activities against seven phytopathogenic fungi and two human pathogenic fungi. Among them, xylarioxides A, E and F showed potent activities against the tested phytopathogens. Particularly, xylarioxide E exhibited the highest activity against Gibberella saubinetii, Curvularia lunata, and Colletotrichum gloeosporioides with MIC values of 4, 4, and 8 μg/mL, respectively, which were comparable to the positive control of nystatin. Interestingly, guaiane sesquiterpene glycosides have been rarely reported from fungal sources. Additionally, xylarioxide E represented an unusual naturally occurring 3,4-seco-steroidal glycoside with a seven-membered lactone in ring A.
    Keywords Azadirachta indica ; Curvularia lunata ; Fusarium ; Glomerella cingulata ; X-ray diffraction ; Xylaria ; endophytes ; fermentation ; glycosides ; metabolites ; nystatin ; plant biochemistry ; sesquiterpenoids ; spectral analysis ; stereochemistry
    Language English
    Dates of publication 2022-07
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 208884-8
    ISSN 1873-3700 ; 0031-9422
    ISSN (online) 1873-3700
    ISSN 0031-9422
    DOI 10.1016/j.phytochem.2022.113188
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