49 results match your criteria: "Gansu Institute for Drug Control[Affiliation]"

This study aims to decipher the mechanism of the broth of Codonopsis Radix fermented with Lactobacillus plantarum(FCR) on the gastric mucosa in the rat model of acute gastric ulcer. A total of 64 SD rats were randomized into 8 groups: control, model, positive control(omeprazole), probiotic, unfermented Codonopsis Radix, and low-, medium-and high-dose FCR, with 8 rats in each group. The rat model of acute gastric ulcer was established by gavage with anhydrous ethanol.

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Microbial fermentation is an effective method to enhance the bioavailability of herbs. This study utilized LZU-J-Q21 to ferment and evaluated its metabolic properties and biological activity. Results showed that the contents of total acid and flavone, and the clearance rates of DPPH, ABTS and OH in fermented (FCD) were increased by 142.

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Article Synopsis
  • Poor in vivo characteristics of gambogic acid (GA) and challenges in manufacturing its nanocarriers limit its clinical use.
  • A new nano-drug delivery system has been developed using GA and a combination of oleyl alcohol and vitamin E-polyethylene glycol succinate to improve stability and circulation.
  • This self-assembled nanoparticle system shows high drug-loading capacity and enhanced antitumor efficacy, while also addressing stability and safety issues related to GA.
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This study uncovers the novel heterogeneity of FOXP3 + regulatory T (Treg) cells and their pivotal role in modulating immune responses during drug-induced allergic reactions, employing cutting-edge single-cell transcriptomics. We established a mouse model for drug-induced allergic reactions and utilized single-cell RNA sequencing (scRNA-seq) to analyze the transcriptomic landscapes of FOXP3 + Treg cells isolated from affected tissues. The study involved both in vitro and in vivo approaches to evaluate the impact of FOXP3 expression levels on the immunoregulatory functions of Treg cells during allergic responses.

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Lipid nanoparticles (LNPs) are emerging as one of the most promising drug delivery systems. The long-circulating effect of intact LNPs (i-LNPs) is the key to efficacy and toxicity . However, the significant challenge is specific and sensitive detection of i-LNPs.

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Quantifying chemical correlations between fruits and processed fruit products: A non-targeted analysis approach.

J Chromatogr A

April 2024

Shaanxi Collaborative Innovation Center Medicinal Resource Industrialization, Shaanxi University of Chinese Medicine, Xianyang, 712083, PR China; China Academy of Chinese Medical Sciences, Beijing, 100700, PR China. Electronic address:

Juices and beverages are produced by industry for long-distance distribution and shelf-stability, providing valuable nutrients. However, their nutritional value is often underestimated due to insufficient analytical methods. We have employed non-targeted analysis through a standardized analytical protocol, taking advantage of Data Independent Acquisition (DIA) technique and a novel Chromatographic Retention Behavior (CRB) data deconvolution algorithm.

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The three distinct medicinal parts of (Oliv.) Diels (Ang) roots are the head, body, and tail (ARH, ARB, and ART, respectively). How endophytic fungi shape the differences in metabolic components among these parts remains unclear.

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Article Synopsis
  • - This study explores the levels of tryptophan (TRP) and its metabolites in the follicular fluid of women with diminished ovarian reserve (DOR) compared to those with normal ovarian reserve (NOR) during in vitro fertilization procedures.
  • - Findings reveal that TRP and its indole metabolites are significantly lower in the DOR group, indicating that DOR impacts the metabolic profile of follicular fluid.
  • - The research suggests a link between TRP levels and embryo viability in NOR women and hints at potential new biomarkers and protective strategies against DOR by examining the influence of intestinal flora on the follicular environment.
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Genotoxic impurities (GTIs) occurred in drugs, and food and environment pose a threat to human health. Accurate and sensitive evaluation of GTIs is of significance. Ames assay is the existing gold standard method.

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Article Synopsis
  • - Photodynamic therapy (PDT) shows promise as a treatment for cancer, but its initial immune-boosting effects are short-lived and eventually lead to immunosuppression, primarily due to the role of TGF-β1.
  • - The study reveals that high doses of PDT trigger an early immune activation followed by late-stage immunosuppression, driven by TGF-β1, through specific mechanisms like the ROS/TGF-β1/MMP-9 feedback loop.
  • - A potential solution proposed involves using TGF-β blockade alongside PDT to counteract the negative effects of immunosuppression, aiming to enhance the effectiveness of tumor photodynamic immunotherapy.
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The conversion of biomass materials into high value-added chemicals is receiving more and more attention. Herein, biomass olive leaves are converted into carbonized polymer dots (CPDs) through a simple hydrothermal reaction. The CPDs show near infrared light emission properties, and the absolute quantum yield reaches a record breaking value of 71.

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The γH2AX is a type of confined target in nuclei which is highly expressed around the damaged DNA during genotoxicity and has therefore been identified as a marker of genotoxicity. Convenient and intuitive in situ real-time detection of γH2AX is crucial for an accurate assessment of genotoxicity. Selective and nondestructive surface-enhanced Raman spectroscopy (SERS) is suitable to achieve this goal.

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Aging is an inevitable physiological process associated with an imbalance in the oxidative defense system. , a kind of traditional Chinese medicine (TCM), has anti-oxidant effects and has been considered as a potential supplement in anti-aging treatment. Nevertheless, it has the disadvantages of slow efficacy and long duration of treatment.

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Antibacterial activity and action mechanism of flavonoids against phytopathogenic bacteria.

Pestic Biochem Physiol

November 2022

CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, China. Electronic address:

As the most difficult to control in plant disease, phytopathogenic bacteria cause huge losses to agricultural products and economy worldwide. However, the commercially available bactericides are few and enhance pathogen resistance. To alleviate this situation, 50 flavonoids were evaluated for their antibacterial activities and mechanism of action against two intractable plant bacterial pathogens.

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Fermentation represents an efficient biotechnological approach to increase the nutritional and functional potential of traditional Chinese medicine. In this study, was used to ferment traditional Chinese medicine , the differential metabolites in the fermented (FA) were identified by ultra-performance liquid chromatography-Q Exactive hybrid quadrupole-Orbitrap mass spectrometry (UPLC-Q-Exactive-MS), and the ameliorating effect of FA on dextran sulfate sodium (DSS)-induced colitis in mice were further explored. The results showed that 11 differential metabolites such as raffinose, progesterone and uridine were identified in FA, which may help improve the ability of FA to alleviate colitis.

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Mussel-inspired catechol-amine co-deposition is an effective modification strategy for various materials. In this work, polyvinylidene fluoride (PVDF) membrane was employed as the carrier for α-glucosidase immobilization. By virtue of the co-polymerization of tannic acid (TA) and 3-aminopropyltriethoxysilane (APTES) and the hydrolysis of APTES, a hierarchical layer-colloidal nanospheres coating was decorated on the surface of PVDF membrane.

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The inhibitory effect of tavaborole on the invasion of in grapes and tomatoes, as well as the potential mechanism involved, was discovered in this study. Our findings showed that tavaborole inhibited spore germination and mycelial expansion in vitro and that the control efficiency in vivo on fruit decay was dose-dependent, which was effective in reducing disease severity and maintaining the organoleptic quality of the fruit, such as reducing weight loss and retaining fruit hardness and titratable acid contents during storage. Furthermore, the precise mechanism of action was investigated further.

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Allicin-Inspired Heterocyclic Disulfides as Novel Antimicrobial Agents.

J Agric Food Chem

September 2022

School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China.

Article Synopsis
  • A series of compounds featuring disulfide bonds and various aromatic heterocycles were created to explore their antimicrobial properties inspired by the biological activity of allicin.
  • One specific compound showed strong antifungal activity with an EC value of 5.92 μg/mL and performed as well as the established drug thiophanate methyl in live tests.
  • This compound not only inhibited fungal growth effectively but also caused noticeable damage to fungal cells, indicating its potential as a more effective antibacterial agent compared to thiodiazole copper with a MIC value of 1.56 μg/mL.
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Unlabelled: Chinese herbal slices (CHSs) are closely associated to microorganisms, whether they are endophytic or epiphytic in plants, or introduced during processing. In this study, the structures and predicted functions of microbial communities in 150 batches of samples from five types of CHSs were investigated by combining pure culture and 16 S rDNA amplicon sequencing. Bile-salt-tolerant gram-negative bacteria were detected in 56.

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Effect of Adulteration on Quality and Preliminary Risk Assessment of the Decoction Pieces of Farfarae Flos Based on the Determination of Hepatotoxic Pyrrolizidine Alkaloids by UHPLC-MS/MS.

J AOAC Int

December 2022

CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), 18 Tianshui Middle Road, Lanzhou 730000, PR China.

Background: Farfarae Flos (FF) is a frequently used traditional herbal medicine with outstanding antitussive actions. The adulteration of FF decoction pieces is common.

Objective: This study aimed to study the effect of adulteration on the safety and quality of FF decoction pieces.

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Screening and identification of active components from traditional Chinese medicines is rather challenging due to the diversity and complexity of chemical components. Herein, a comprehensive strategy based on a spectrum-effect relationship model and LC-MS analysis was developed to screen active components from Terminalia chebula fruits. The water extract of T.

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Background: The abuse of chemical fungicides not only leads to toxic residues and resistance in plant pathogenic fungi, but also causes environmental pollution and side effects on in humans and animals. Based on the antifungal activities of berberine, seven different types of berberine derivatives (A1-G1) were synthesized, and their antifungal activities against six plant pathogenic fungi were evaluated (Rhizoctonia solani, Botrytis cinerea, Fusarium graminearum, Phytophthora capsici, Sclerotinia sclerotiorum, and Magnaporthe oryzae).

Results: The results for antifungal activities in vitro showed that berberine derivative E1 displayed good antifungal activity against R.

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Cyclocarya paliurus, as an important edible and medicinal product, has shown a good prospect in the prevention of diabetes mellitus (DM). However, it is unclear which active compounds derived from C. paliurus play a significant role in inhibiting α-glucosidase activity.

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L. medicinal materials and their preparations are widely used in clinical practice. Betelnut polyphenol is one of the main chemical components with antioxidant, anti-inflammatory, and antibacterial effects.

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In this study, α-glucosidase was successfully immobilized on cellulose filter paper and further applied to screening inhibitors from traditional Chinese medicines combined with capillary electrophoresis analysis. For α-glucosidase immobilization, a cellulose filter paper was used as the carrier and grafted with amino groups by coating chitosan, then α-glucosidase was covalently bonded on the amino-modified carrier via epoxy ring-opening reaction using polyethylene glycol diglycidyl ether as the crosslinker. Several parameters influencing the enzyme immobilization were optimized and the optimal values were enzyme concentration of 4 U/mL, polyethylene glycol diglycidyl ether concentration of 1.

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