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Métodos Terapêuticos e Terapias MTCI
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1.
Phytomedicine ; 126: 155053, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38359483

RESUMO

BACKGROUND: Cigarette smoke impairs mucociliary clearance via mechanisms such as inflammatory response and oxidative injury, which in turn induces various respiratory diseases. Naringenin, a naturally occurring flavonoid in grapes and grapefruit, has exhibited pharmacological properties such as anti-inflammatory, expectorant, and antioxidant properties. However, it is still unclear whether naringenin protects airway cilia from injury caused by cigarette smoke. PURPOSE: This study aimed to investigate the effect of naringenin on cigarette smoke extract (CSE)-induced structural and functional abnormalities in airway cilia and highlight the potential regulatory mechanism. METHODS: Initially, network pharmacology was used to predict the mechanism of action of naringenin in ciliary disease. Next, HE staining, immunofluorescence, TEM, qRT-PCR, western blot, and ELISA were performed to assess the effects of naringenin on airway cilia in tracheal rings and air-liquid interface (ALI) cultures of Sprague Dawley rats after co-exposure to CSE (10% or 20%) and naringenin (0, 25, 50, 100 µM) for 24 h. Finally, transcriptomics and molecular biotechnology methods were conducted to elucidate the mechanism by which naringenin protected cilia from CSE-induced damage in ALI cultures. RESULTS: The targets of ciliary diseases regulated by naringenin were significantly enriched in inflammation and oxidative stress pathways. Also, the CSE decreased the number of cilia in the tracheal rings and ALI cultures and reduced the ciliary beat frequency (CBF). However, naringenin prevented CSE-induced cilia damage via mechanisms such as the downregulation of cilia-related genes (e.g., RFX3, DNAI1, DNAH5, IFT88) and ciliary marker proteins such as DNAI2, FOXJ1, and ß-tubulin IV, the upregulation of inflammatory factors (e.g., IL-6, IL-8, IL-13), ROS and MDA. IL-17 signaling pathway might be involved in the protective effect of naringenin on airway cilia. Additionally, the cAMP signaling pathway might also be related to the enhancement of CBF by naringenin. CONCLUSION: In this study, we first found that naringenin reduces CSE-induced structural disruption of airway cilia in part via modulation of the IL-17 signaling pathway. Furthermore, we also found that naringenin enhances CBF by activating the cAMP signaling pathway. This is the first report to reveal the beneficial effects of naringenin on airway cilia and the potential underlying mechanisms.


Assuntos
Fumar Cigarros , Cílios , Flavanonas , Animais , Ratos , Ratos Sprague-Dawley , Cílios/metabolismo , Interleucina-17/metabolismo , Células Epiteliais
2.
BMC Genomics ; 25(1): 22, 2024 Jan 02.
Artigo em Inglês | MEDLINE | ID: mdl-38166591

RESUMO

BACKGROUND: Gelsemium elegans is a traditional Chinese medicinal plant and temperature is one of the key factors affecting its growth. RAV (related to ABI3/VP1) transcription factor plays multiple roles in higher plants, including the regulation of plant growth, development, and stress response. However, RAV transcription factor in G. elegans has not been reported. RESULTS: In this study, three novel GeRAV genes (GeRAV1-GeRAV3) were identified from the transcriptome of G. elegans under low temperature stress. Phylogenetic analysis showed that GeRAV1-GeRAV3 proteins were clustered into groups II, IV, and V, respectively. RNA-sequencing (RNA-seq) and real-time quantitative PCR (qRT-PCR) analyses indicated that the expression of GeRAV1 and GeRAV2 was increased in response to cold stress. Furthermore, the GeRAV1 gene was successfully cloned from G. elegans leaf. It encoded a hydrophilic, unstable, and non-secretory protein that contained both AP2 and B3 domains. The amino acid sequence of GeRAV1 protein shared a high similarity of 81.97% with Camptotheca acuminata CaRAV. Subcellular localization and transcriptional self-activation experiments demonstrated that GeRAV1 was a nucleoprotein without self-activating activity. The GeRAV1 gene was constitutively expressed in the leaves, stems, and roots of the G. elegans, with the highest expression levels in roots. In addition, the expression of the GeRAV1 gene was rapidly up-regulated under abscisic acid (ABA), salicylic acid (SA), and methyl jasmonate (MeJA) stresses, suggesting that it may be involved in hormonal signaling pathways. Moreover, GeRAV1 conferred improved cold and sodium chloride tolerance in Escherichia coli Rosetta cells. CONCLUSIONS: These findings provided a foundation for further understanding on the function and regulatory mechanism of the GeRAV1 gene in response to low-temperature stress in G. elegans.


Assuntos
Gelsemium , Fatores de Transcrição , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo , Gelsemium/metabolismo , Estresse Fisiológico/genética , Filogenia , Regulação da Expressão Gênica de Plantas , Resposta ao Choque Frio , Proteínas de Plantas/metabolismo
3.
Plant Dis ; 105(11): 3723-3726, 2021 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33978433

RESUMO

Tea gray blight is one of the most serious foliar diseases of tea tree, caused by the plant-pathogenic fungus Pseudopestalotiopsis theae, which can affect production and quality of tea worldwide. We generated a highly contiguous, 50.41-Mbp genome assembly (N50 = 1.30 Mbp) of P. theae strain CYF27 by combining PacBio long-read and Illumina short-read sequencing technologies. We identified a total of 15,626 gene models, of which 1,038 genes encode putative secreted proteins. The high-quality genome assembly and annotation resource reported here will be useful for the study of fungal infection mechanisms and pathogen-host interaction.


Assuntos
Ascomicetos , Doenças das Plantas , Ascomicetos/genética , Análise de Sequência de DNA , Chá
4.
BMC Complement Altern Med ; 14: 362, 2014 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-25256890

RESUMO

BACKGROUND: The Consolidated Standards for Reporting Trials (CONSORT) are aimed to standardize clinical trial reporting. Our objective is to compare the quality of randomized clinical trials (RCTs) of traditional Chinese medicine (TCM) published in 2005-2009 and 2011-2012 according to the current CONSORT statements and Jadad scale. DATA SOURCES: Reports on RCTs of TCM in the China National Knowledge Infrastructure database (CNKI database) for manuscripts published from 2005 to 2009 and 2011-2012. Search terms included TCM and clinical trial. STUDY SELECTION: Manuscripts that reported RCTs of TCM were included. DATA EXTRACTION: Independent extraction of articles was done by 3 authors. Disagreement was discussed until agreement was reached. According to the CONSORT checklist, an item was scored as 1 when the item was described in the paper. Otherwise the item was scored as 0. RESULTS: A total of 4133 trials in 2005-2009 and 2861 trials in 2011-2012 were identified respectively. There was a significant increase in proportion of reports that included details of background (24.71% vs 35.20%, P < 0.001), participants (49.79% vs 65.26%, P < 0.001), the methods of random sequence generation (13.77% vs 19.85%, P < 0.001), statistical methods (63.00% vs 72.77%, P < 0.001) and recruitment date (70.14% vs 80.36%, P < 0.001) in 2011-2012 compared to 2005-2009. However, the percentage of reports with trial design decreased from 4.45% to 3.25% (P = 0.011). Few reports described the blinding methods, and there was a decreasing tendency (4.77% vs 2.48%, P < 0.001). There was a similar decreasing tendency on the reporting of funding (6.53% vs 5.00%, P = 0.007). There were no significant differences in the other CONSORT items. In terms of Jadad Score, the proportion of reports with a score of 2 was markedly increased (15.15% vs 19.71%, P < 0.001). CONCLUSIONS: Although the quality of reporting RCTs of TCM was improved in 2011-2012 compared to 2005-2009, the percentages of high-quality reports are both very low in terms of Jadad score. There is a need for improving standards for reporting RCTs in China.


Assuntos
Medicamentos de Ervas Chinesas/uso terapêutico , Medicina Tradicional Chinesa/normas , Ensaios Clínicos Controlados Aleatórios como Assunto/normas , Pesquisa Biomédica/normas , Humanos
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