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1.
Cancer Manag Res ; 16: 909-919, 2024.
Article de Anglais | MEDLINE | ID: mdl-39081698

RÉSUMÉ

The rising global morbidity and mortality rates of non-small cell lung cancer (NSCLC) underscore the urgent need for more effective treatments. Current therapeutic modalities-including surgery, radiotherapy, chemotherapy, and targeted therapy-face several limitations. Recently, Astragalus membranaceus, a traditional Chinese medicine (TCM), has captured significant attention due to its broad pharmacological properties, such as immune regulation, anti-inflammatory effects, and the modulation of reactive oxygen species (ROS) and enzyme activities. This review delivers a comprehensive summary of the most recent advancements and ongoing applications of Astragalus membranaceus in NSCLC treatment, underlining its potential for integration into existing treatment protocols. It also highlights essential areas for future research, including the elucidation of its molecular mechanisms, optimization of dosage and administration, and evaluation of its efficacy and safety alongside standard therapies, all of which could potentially improve therapeutic outcomes for NSCLC patients.

2.
Phytochemistry ; 225: 114187, 2024 Sep.
Article de Anglais | MEDLINE | ID: mdl-38889845

RÉSUMÉ

Seven previously undescribed compounds, including four diketomorpholine alkaloids (1‒4), one indole diketopiperazine alkaloid (9), one chromone (10), and one benzoic acid derivative (13), and nine known compounds (5-8, 11, 12, and 14-16) were isolated from two different fungal sources. Nine of these metabolites (1-9) were obtained from a seagrass-derived Aspergillus alabamensis SYSU-6778, while the others were obtained from a mixed culture of A. alabamensis SYSU-6778 and a co-isolated fungus A. fumigatiaffinis SYSU-6786. The chemical structures of the compounds were deduced via spectroscopic techniques (including HRESIMS, 1D and 2D NMR), chemical reactions, and ECD calculations. It is worth noting that compound 10 was identified as a defensive secondary metabolite of strain SYSU-6786, produced through the induction of compound 8 under co-culture conditions. Compounds 3 and 4 possessed a naturally rare isotryptophan core. Moreover, compounds 1 and 2 exhibited potent inhibitory activities against fish pathogenic bacterium Edwardsiella ictalurid, with minimum inhibitory concentration values of 10.0 µg/mL for both compounds.


Sujet(s)
Aspergillus , Tests de sensibilité microbienne , Aspergillus/composition chimique , Aspergillus/métabolisme , Structure moléculaire , Techniques de coculture , Métabolisme secondaire , Antibactériens/composition chimique , Antibactériens/pharmacologie , Antibactériens/isolement et purification , Antibactériens/biosynthèse , Antibactériens/métabolisme , Animaux , Alcaloïdes/composition chimique , Alcaloïdes/pharmacologie , Alcaloïdes/isolement et purification , Alcaloïdes/métabolisme , Pipérazinediones/composition chimique , Pipérazinediones/pharmacologie , Pipérazinediones/métabolisme , Pipérazinediones/isolement et purification , Relation structure-activité , Relation dose-effet des médicaments
3.
ACS Sens ; 9(7): 3540-3548, 2024 Jul 26.
Article de Anglais | MEDLINE | ID: mdl-38908004

RÉSUMÉ

Infection with drug-resistant bacteria poses a significant threat to human health. Judicious use of antibiotics could reduce the likelihood of bacterial resistance, which can be evaluated through antibiotic susceptibility testing (AST). This paper focuses on the application of a needle-like nanocapillary tip filled with chitosan (CS)/polyethylene pyrrolidone (PVP) hydrogel based on its specific pH-sensitive properties. The gel-filled nanocapillary has the potential to be used for electrical pH detection with a sensitivity of 3.06 nA/pH and a linear range from 7.3 to 4.3. Such sensitivity for pH measurement could be extended for monitoring of bacterial (such as Escherichia coli and Streptococcus salivarius) growth because of the relationship between pH and bacterial growth. Bacterial growth curves obtained using the hydrogel-filled nanocapillary showed good agreement with the OD600 method. Moreover, this device could be applied for rapid AST for tetracycline and norfloxacin on E. coli with minimum inhibitory concentrations of 2 and 0.125 µg/mL, respectively. This study expands the application of the hydrogel-based nanocapillary for bacterial research by monitoring changes in pH values.


Sujet(s)
Antibactériens , Chitosane , Escherichia coli , Hydrogels , Tests de sensibilité microbienne , Chitosane/composition chimique , Chitosane/pharmacologie , Antibactériens/pharmacologie , Antibactériens/composition chimique , Escherichia coli/effets des médicaments et des substances chimiques , Escherichia coli/croissance et développement , Hydrogels/composition chimique , Hydrogels/pharmacologie , Concentration en ions d'hydrogène , Povidone/composition chimique , Povidone/pharmacologie
4.
Oral Health Prev Dent ; 22: 139-144, 2024 03 14.
Article de Anglais | MEDLINE | ID: mdl-38483398

RÉSUMÉ

PURPOSE: To examine the clinical efficacy of a chlorhexidine gargle combined with recombinant bovine basic fibroblast growth factor (rb-bFGF) gel in the treatment of recurrent oral ulcers and its effects on inflammatory factors, immune function, and recurrence rate. MATERIALS AND METHODS: Ninety-six patients with recurrent oral ulcers were randomly assigned to two groups: experimental (treatment with chlorhexidine gargle plus rb-bFGF gel) and control (treatment with chlorhexidine gargle alone) (n = 48 cases). The therapeutic efficacy, clinical improvement of symptoms, and recurrence rate within 3 months were compared between the two groups. Serum inflammatory factor and immune factor levels of patients in the two groups were measured before and after treatment. RESULTS: A statistically significantly higher total effective rate was found in patients of the experimental group (95.83%) versus the control group (81.25%) (p < 0.05). The time to onset of pain relief was shortened, the duration of pain relief was prolonged, and VAS scores for pain level were lower in the experimental than the control group (p < 0.05). Among patients in the experimental group, the number of oral ulcers and ulcer area decreased, and faster onset of pain relief and time until normal eating improved in comparison to the control group (p < 0.05). Reduced levels of IL-2, IL-6, IL-8, and TNF-α were observed in the experimental vs the control group (p < 0.05). Elevated levels of CD3+, CD4+, and NKT and reduced levels of CD8+ were found in the experimental group compared to the control group (p < 0.05). The ulcer recurrence rate of patients in the experimental group (8.33%) was notably lower in comparison to the control group (29.17%). CONCLUSION: Chlorhexidine gargle plus rb-bFGF gel can improve the clinical outcome of patients with recurrent oral ulcers. It can reduce the levels of inflammatory factors, improve immune function, and reduce the recurrence rate.


Sujet(s)
Chlorhexidine , Ulcère buccal , Humains , Animaux , Bovins , Chlorhexidine/usage thérapeutique , Facteur de croissance fibroblastique de type 2 , Ulcère , Bains de bouche , Résultat thérapeutique , Douleur
5.
Int J Mol Med ; 46(6): 2007-2018, 2020 Dec.
Article de Anglais | MEDLINE | ID: mdl-33125097

RÉSUMÉ

Long intergenic non­coding RNA 01232 (LINC01232) was identified as a critical regulator of the development of pancreatic adenocarcinoma. The present study investigated the expression and regulatory roles of LINC01232 in esophageal squamous cell carcinoma (ESCC). The main aim of the present study was to elucidate the underlying mechanisms through which LINC01232 affects the malignancy of ESCC. Initially, LINC01232 expression in ESCC was analyzed using the TCGA and GTEx databases and was confirmed using reverse transcription­quantitative polymerase chain reaction. ESCC cell proliferation, apoptosis and migration and invasion were assessed using the Cell Counting kit­8 assay, flow cytometric analysis, and migration and invasion assays, respectively. ESCC tumor growth in vivo was examined using a xenograft mouse model. As shown by the results, a high LINC01232 expression was detected in ESCC tissues and cell lines. LINC01232 downregulation suppressed the proliferation, migration and invasion of ESCC cells, and promoted cell apoptosis in vitro. In addition, LINC01232 depletion restricted tumor growth in vivo. Mechanistically, LINC01232 was shown to function as an microRNA­654­3p (miR­654­3p) sponge in ESCC cells, and hepatoma­derived growth factor (HDGF) was identified as a direct target of miR­654­3p. LINC01232 could bind competitively to miR­654­3p and decrease its expression in ESCC cells, thereby promoting HDGF expression. Rescue experiments reconfirmed that the effects of LINC01232 deficiency in ESCC cells were restored by increasing the output of the miR­654­3p/HDGF axis. On the whole, the present study demonstrates that LINC01232 plays a tumor­promoting role during the progression of ESCC by regulating the miR­654­3p/HDGF axis. The LINC01232/miR­654­3p/HDGF pathway may thus provide a novel theoretical basis for the management of ESCC.


Sujet(s)
Évolution de la maladie , Tumeurs de l'oesophage/génétique , Carcinome épidermoïde de l'oesophage/génétique , Carcinome épidermoïde de l'oesophage/anatomopathologie , Régulation de l'expression des gènes tumoraux , Protéines et peptides de signalisation intercellulaire/génétique , microARN/métabolisme , ARN long non codant/génétique , Sujet âgé , Animaux , Séquence nucléotidique , Lignée cellulaire tumorale , Prolifération cellulaire/génétique , Tumeurs de l'oesophage/anatomopathologie , Femelle , Techniques de knock-down de gènes , Humains , Protéines et peptides de signalisation intercellulaire/métabolisme , Mâle , Souris de lignée BALB C , Souris nude , microARN/génétique , Adulte d'âge moyen , ARN long non codant/métabolisme , Régulation positive/génétique
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