Quality evaluation

质量评价
  • 文章类型: Journal Article
    在这项研究中,我们使用称为索拉非尼-姜黄素自微乳化药物递送系统(SOR-CUR-SMEDDS)的自微乳化药物递送系统(SMEDDS)开发了姜黄素和索拉非尼的新型联合给药。采用星点设计-响应面法对配方进行了优化,和体外细胞实验来评估姜黄素和索拉非尼组合的给药比例和抗肿瘤功效。SOR-CUR-SMEDDS表现出13.48±0.61nm的小尺寸分布,低的多分散指数(PDI)为0.228±0.05,负ζ电位(ZP)为-12.4mV。对于姜黄素,SOR-CUR-SMEDDS的半数最大抑制浓度(IC50)低3倍,对于索拉非尼,对HepG2细胞(人肝细胞癌细胞)低5倍。透射电子显微镜(TEM)和粒度检测证实SOR-CUR-SMEDDS液滴是均匀圆形的并且在10-20nm的纳米乳液粒度范围内。对SMEDDS进行表征,然后通过透析膜研究其在体外的药物释放。姜黄素在联合给药系统中更完全地释放,在培养基中7天内显示最大的体外药物释放(79.20%),而索拉非尼在释放介质中的累积释放速率较低,7天达到58.96%。体外药代动力学研究,当在SMEDDS中给药时,它证明了索拉非尼(1239.88倍)和姜黄素(3.64倍)的口服生物利用度显著增加.这些发现表明,SMEDDS制剂可以大大提高药物的溶解度,改善药物吸收和延长体内循环,导致索拉非尼和姜黄素的口服生物利用度增加。
    In this study, we developed a novel co-administration of curcumin and sorafenib using a Self micro-emulsifying Drug Delivery System (SMEDDS) called Sorafenib-Curcumin Self micro-emulsifying Drug Delivery System (SOR-CUR-SMEDDS). The formulation was optimized using star point design-response surface methodology, and in vitro cellular experiments were conducted to evaluate the delivery ratio and anti-tumor efficacy of the curcumin and sorafenib combination. The SOR-CUR-SMEDDS exhibited a small size distribution of 13.48 ± 0.61 nm, low polydispersity index (PDI) of 0.228 ± 0.05, and negative zeta potential (ZP) of - 12.4 mV. The half maximal inhibitory concentration (IC50) of the SOR-CUR-SMEDDS was 3-fold lower for curcumin and 5-fold lower for sorafenib against HepG2 cells (human hepatocellular carcinoma cells). Transmission electron microscopy (TEM) and particle size detection confirmed that the SOR-CUR-SMEDDS droplets were uniformly round and within the nano-emulsion particle size range of 10-20 nm. The SMEDDS were characterized then studied for drug release in vitro via dialysis membranes. Curcumin was released more completely in the combined delivery system, showing the largest in vitro drug release (79.20%) within 7 days in the medium, while the cumulative release rate of sorafenib in the release medium was low, reaching 58.96% on the 7 day. In vitro pharmacokinetic study, it demonstrated a significant increase in oral bioavailability of sorafenib (1239.88-fold) and curcumin (3.64-fold) when administered in the SMEDDS. These findings suggest that the SMEDDS formulation can greatly enhance drug solubility, improve drug absorption and prolong circulation in vivo, leading to increased oral bioavailability of sorafenib and curcumin.
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  • 文章类型: Journal Article
    中药的质量取决于其次级代谢产物的含量,随着栖息地适应和生态因素的变化。本研究的重点是金银花(LJF),一种关键的传统草药,并旨在评估生态因素如何影响其质量。
    我们开发了一种结合高效液相色谱(HPLC)指纹技术和MaxEnt模型的新评估方法,以评估生态因素对LJF质量的影响。MaxEnt模型用于预测当前和未来情景的合适栖息地,同时采用高效液相色谱法分析关键化合物的含量。我们还使用ArcGIS进行空间分析,以创建高质量的分区地图。
    分析确定了21个常见色谱峰,金丝桃苷的含量有很大差异,芦丁,绿原酸,Cynaroside,和异绿原酸A跨越不同的栖息地。确定了影响LJF分布的关键环境变量,包括温度,降水,和海拔。目前适宜的栖息地主要包括长江以南地区。在未来的气候情景下,合适的地区预计会发生变化,甘肃南部有显著的扩张,西藏东南部,和辽宁南部。空间分布图显示,优质LJF主要分布在河北中南部,河南北部,山东中部,四川中部,广东南部,和台湾。
    研究表明,合适的生长区域可以促进植物中某些次生代谢产物的积累,随着这些代谢物的积累变化。结果强调了根据栽培实践优化质量的必要性。HPLC指纹图谱技术和MaxEnt模型的集成为草药资源的保护和种植提供了宝贵的见解,为评价生态因子对中药质量的影响提供了新的视角。
    UNASSIGNED: The quality of traditional Chinese medicine is based on the content of their secondary metabolites, which vary with habitat adaptation and ecological factors. This study focuses on Lonicera japonica Flos (LJF), a key traditional herbal medicine, and aims to evaluate how ecological factors impact its quality.
    UNASSIGNED: We developed a new evaluation method combining high-performance liquid chromatography (HPLC) fingerprinting technology and MaxEnt models to assess the effects of ecological factors on LJF quality. The MaxEnt model was used to predict suitable habitats for current and future scenarios, while HPLC was employed to analyze the contents of key compounds. We also used ArcGIS for spatial analysis to create a quality zoning map.
    UNASSIGNED: The analysis identified 21 common chromatographic peaks, with significant variations in the contents of Hyperoside, Rutin, Chlorogenic acid, Cynaroside, and Isochlorogenic acid A across different habitats. Key environmental variables influencing LJF distribution were identified, including temperature, precipitation, and elevation. The current suitable habitats primarily include regions south of the Yangtze River. Under future climate scenarios, suitable areas are expected to shift, with notable expansions in southern Gansu, southeastern Tibet, and southern Liaoning. The spatial distribution maps revealed that high-quality LJF is predominantly found in central and southern Hebei, northern Henan, central Shandong, central Sichuan, southern Guangdong, and Taiwan.
    UNASSIGNED: The study indicates that suitable growth areas can promote the accumulation of certain secondary metabolites in plants, as the accumulation of these metabolites varies. The results underscore the necessity of optimizing quality based on cultivation practices. The integration of HPLC fingerprinting technology and the MaxEnt model provides valuable insights for the conservation and cultivation of herbal resources, offering a new perspective on evaluating the impact of ecological factors on the quality of traditional Chinese medicines.
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  • 文章类型: Journal Article
    热毒宁注射液(RDN)是临床上广泛使用的中药注射剂。在这项研究中,同时采用UPLC-OrbitrapMS/MS对RDN进行定性和定量分析。在RDN中鉴定了总共118个化合物,并且定量了34个化合物。该方法已完成方法验证,证明该方法具有较高的灵敏度和效率,可用于定量RDN中的化合物。多元统计分析方法选取了影响RDN内容一致性的11个关键变量。通过cox-2酶活性测定筛选出20个具有高生物效价的批次。谱效关系分析和多变量统计分析表明,经质量综合评价,筛选出7个批次的质量较好,9个化合物为筛选的关键指标。这个策略包括指纹,定性分析和多成分量化可以很好地应用于RDN的现代质量评价,这对于更多其他中药的进一步质量控制可能是有价值的。
    Reduning injection (RDN) is a traditional chinese medicine injection widely used in clinical practice. In this study, qualitative and quantitative analysis of RDN were conducted by UPLC-Orbitrap MS/MS simultaneously. Totally 118 compounds were identified and 34 compounds were quantified in RDN. The method with completed method validation proved the high sensitivity and efficiency of the method and it was applied to quantify compounds in RDN. Multivariate statistical analysis method selected 11 key variables that affect the content consistency of RDN. 20 batches with high biological potency were screened by cox-2 enzyme activity assay. Spectrum-effect relationship analysis and multivariate statistical analysis showed that 7 batches were high-quality selected after comprehensive quality evaluation and 9 compounds were key indicators for screening it. This strategy including fingerprint, qualitative analysis and multiple-component quantification could be well applied to modern quality evaluation of RDN, which could be valuable for the further quality control of more other traditional Chinese medicines.
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  • 文章类型: Journal Article
    夏枯草(P.)在改善睡眠方面具有很大的应用价值和发展前景。在这项研究中,我们继续从化学特征和基于睡眠改善功能成分的功能两方面评估寻常假单胞菌的睡眠改善功能和机制,迷迭香酸和丹参,在前一阶段筛选出作为指数成分。采用UPLC-MSn技术对普通青霉及其酚酸组分的化学成分进行了表征。通过指纹图谱结合迷迭香酸和丹参苷的定量分析,科学地评价了普通P的睡眠改善酚酸组分的质量。通过不同的失眠模型,包括PCPA诱导的失眠模型和表面平台睡眠剥夺模型,验证了寻常假单胞菌酚酸部分在改善睡眠中的作用。HE染色观察寻常型疟原虫对不同脑区神经细胞形态的影响。体内实验和分子对接探讨了普通P的功能成分的镇静催眠作用。这些研究结果从多个角度探讨了寻常假单胞菌改善睡眠的物质基础和作用机制,这有助于为改善睡眠的功能性食品的开发提供基础。
    Prunella vulgaris L. (P. vulgaris) has great application value and development prospects in improving sleep. In this study, we continued to evaluate the sleep-improvement function and mechanism of P. vulgaris from both chemical characterization and function based on sleep-improvement functional ingredients, rosmarinic acid and salviaflaside, screened out in the previous stage as the index components. The chemical constituents of P. vulgaris and its phenolic acid fraction were characterized by the UPLC-MSn technology. The quality of the sleep-improvement phenolic acid fraction of P. vulgaris was scientifically evaluated by fingerprints combined with quantitative analysis of rosmarinic acid and salviaflaside. The function of phenolic acid parts of P. vulgaris in improving sleep was verified by different insomnia models including the PCPA-induced insomnia model and surface platform sleep deprivation model. HE staining was used to observe the effect of P. vulgaris on the morphology of nerve cells in different brain regions. In vivo experiments and molecular docking explored the sedative-hypnotic effects of functional ingredients of P. vulgaris. All these results investigated the material basis and mechanism of P. vulgaris to improve sleep from multiple perspectives, which contribute to providing a basis for the development of functional food to improve sleep.
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  • 文章类型: Journal Article
    近年来,中药及其制剂越来越受欢迎。尽管如此,由于中成药(TCPM)中化合物的高度复杂性,不同剂型和不同厂家产品的质量差异给质量评价带来了许多挑战和困难。强力天马杜仲(QLTMDZ)处方,包括十二个中医,在中国广泛使用。尽管流行,目前对QLTMDZ的研究有限,缺乏对处方化学成分的深入系统的分析。在这项研究中,提出了一种基于UHPLC-Q-TOF-MS表征QLTMDZ化学特征的综合策略。在正离子和负离子模式下,在QLTMDZ中总共鉴定了122种化合物。随后,在MS-DIAL软件中进行了多变量统计方法,例如主成分分析(PCA)和正交偏最小二乘判别分析(OPLS-DA),以进一步阐明来自七个制造商的55批QLTMDZ样品之间的质量差异。最后,多反应监测(MRM)模式与UHPLC-QQQ-MS结合使用,用于对QLTMDZ制剂中已鉴定的24种化合物进行精确定量,并在质量评估中提供补充信息。本研究建立的分析方法灵敏、高效,能够对QLTMDZ中的化学成分进行定性和定量分析。多元统计分析的应用有效地根据不同的剂型和生产企业区分样品,从而为进一步开展方剂质量控制研究提供新的研究方向和科学支持。
    Traditional Chinese medicine (TCM) and its preparations have become increasingly popular in recent years. Nonetheless, due to the high complexity of the compounds in Traditional Chinese Patent Medicine (TCPM), the quality differences between different dosage forms and products from various manufacturers pose numerous challenges and difficulties in quality evaluation. The Qiangli Tianma Duzhong (QLTMDZ) prescription, comprising twelve TCM, is widely used in China. Despite its prevalence, current research on QLTMDZ is limited and lacks in-depth and systematic analysis of the chemical composition of the prescription. In this study, a comprehensive strategy was proposed for characterizing the chemical profile of QLTMDZ based on UHPLC-Q-TOF-MS. A total of 122 compounds were identified in QLTMDZ under both positive and negative ion modes. Subsequently, multivariate statistical methods such as principal component analysis (PCA) and orthogonal partial least squares-discriminant analysis (OPLS-DA) were conducted in the MS-DIAL software to further elucidate quality differences among 55 batches of QLTMDZ samples from seven manufacturers. Lastly, multiple reaction monitoring (MRM) mode was utilized in conjunction with UHPLC-QQQ-MS, for the precise quantification of the identified 24 compounds within the QLTMDZ preparation and providing supplementary information in quality evaluation. The established analytical method in this study is sensitive and efficient, enabling qualitative and quantitative analysis of the chemical constituents within QLTMDZ. The application of multivariate statistical analyses effectively discriminates samples based on different dosage forms and manufacturers, thereby providing new research directions and scientific support for further studies on the quality control of the prescription.
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  • 文章类型: Journal Article
    目的:本研究旨在评估微信和TikTok视频中与高血压和糖尿病治疗相关的信息质量。方法:根据特定的纳入和排除标准,收集120个中文视频样本。使用DISCERN评估质量,JAMA和最新版的中国高血压和糖尿病预防和治疗指南,两名观察员使用三种评估工具对每个视频进行独立评分。结果:在所有120个视频中,在DISCERN中只有10人得分超过38分,45个视频被评为“非常差”。没有一个视频同时符合所有JAMA标准,与两个指南相比,在准确性和完整性方面存在差距。此外,信息质量与喜欢和评论的数量之间没有显着相关性。结论:目前微信和TikTok关于高血压和糖尿病治疗的信息质量不理想。因此,政府应加强对信息质量的监督,社交媒体平台应积极审查与健康相关的内容,以防止不准确的信息传播。个人应该提高他们的数字和健康素养。
    Objective: This study aimed to assess the quality of the information in WeChat and TikTok videos related to hypertension and diabetes treatment. Methods: A sample of 120 Chinese videos was collected based on specific inclusion and exclusion criteria. The quality was evaluated using DISCERN, JAMA and the latest edition of Chinese guidelines for hypertension and diabetes prevention and treatment, and two observers independently scored each video using the three assessment tools. Results: Among all 120 videos, only 10 scored above 38 points in DISCERN, with 45 videos rated as \"very poor\". None of the video met all JAMA criteria simultaneously, and there were gaps in accuracy and completeness compared to the two guidelines. Furthermore, there was no significant correlation between information quality and the number of likes and comments. Conclusion: The current quality of information on the treatment of hypertension and diabetes on WeChat and TikTok was unsatisfactory. Consequently, the government should strengthen oversight of information quality, and social media platforms should actively review health-related content to prevent inaccurate information dissemination. Individuals should enhance their digital and health literacy.
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  • 文章类型: Journal Article
    太妃糖(EPR)是一种常用于治疗水肿的传统中草药,胸腔积液,和腹水。然而,假冒伪劣产品经常出现在市场上,相似的外观,和人工伪造中草药。本研究采用多种方法综合评价EPR的质量。DNA条形码技术用于鉴定EPR,同时利用UPLC-Q-TOF-MS技术分析EPR的化学成分。共鉴定出15种单宁和酚酸组分。此外,建立了EPR及其常见假冒产品的UPLC指纹图谱,使用这些指纹开发了无监督和有监督的模式识别模型。反向传播人工神经网络和反向传播人工神经网络模型准确识别假冒和掺假产品,假冒率超过25%。最后,化学标记物3,3'-二-O-甲基鞣花酸-4'-O-β-D-吡喃葡萄糖苷的含量,鞣花酸,3,3'-二-O-甲基鞣花酸-4'-O-β-d-吡喃木糖苷,和3,3'-二-O-甲基鞣花酸测定范围为0.05%至0.11%,1.95%至8.52%,0.27%至0.86%,和0.10%至0.42%,分别。该提议的策略提供了识别中草药和区分假冒和掺假产品的一般程序。
    Euphorbiae pekinensis Radix (EPR) is a traditional Chinese herb commonly used to treat edema, pleural effusion, and ascites. However, counterfeit and adulterated products often appear in the market because of the homonym phenomenon, similar appearance, and artificial forgery of Chinese herbs. This study comprehensively evaluated the quality of EPR using multiple methods. The DNA barcode technique was used to identify EPR, while the UPLC-Q-TOF-MS technique was utilized to analyze the chemical composition of EPR. A total of 15 tannin and phenolic acid components were identified. Furthermore, UPLC fingerprints of EPR and its common counterfeit products were established, and unsupervised and supervised pattern recognition models were developed using these fingerprints. The backpropagation artificial neural network and counter-propagation artificial neural network models accurately identified counterfeit and adulterated products, with a counterfeit ratio of more than 25%. Finally, the contents of the chemical markers 3,3\'-di-O-methyl ellagic acid-4\'-O-β-D-glucopyranoside, ellagic acid, 3,3\'-di-O-methyl ellagic acid-4\'-O-β-d-xylopyranoside, and 3,3\'-di-O-methyl ellagic acid were determined to range from 0.05% to 0.11%, 1.95% to 8.52%, 0.27% to 0.86%, and 0.10% to 0.42%, respectively. This proposed strategy offers a general procedure for identifying Chinese herbs and distinguishing between counterfeit and adulterated products.
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  • 文章类型: Journal Article
    姜黄(CR)是姜黄Val(CP)的干根茎,姜黄S.G.Lee和C.F.Liang(CK)和姜黄Y.H.Chen等C.Ling(CW),在中国广泛用于治疗血瘀。目前,CR的质量控制指标仅限于化学成分分析。目前尚不清楚CR多组分含量的质量标准能否反映临床疗效。由于缺乏对生物效应的评价。开发了一种评估质量的方法,称为效果构成指数(ECI)。通过精心测量和校准关键有源元件,ECI对CR的生物学效应进行了全面评估,建立与临床疗效和安全性的关键环节。设计了一种采用高效液相色谱(HPLC)的分析方案,以确定CR中的存在并测量源自各种物种的10种主要成分,并测量了总挥发油的含量。开发了一种体外抗血小板聚集测定法,以测量30批CR和10种主要成分的抗血小板聚集生物效力。然后,ECI中每种成分的校准重量是根据8种具有显著功效的成分的抗血小板聚集生物效价值确定的.ECI计算涉及对通过将每种组分的含量(Ci)乘以其相应的生物效能重量(Wi)而获得的乘积求和。相关分析揭示了ECI与CR的抗血小板聚集生物效价之间的最稳健的相关性(R=0.8579,p<0.001),与单个成分或挥发油含量相比。设计的ECI,合成与临床有效性相关的化学和生物学数据,有助于对不同物种的CR质量进行细微差别的评估,以治疗血液停滞。该方法解决了仅通过化学分析来保证有效性的挑战。这项研究为ECI作为评估中药(TCM)质量的工具的适用性提供了依据。
    Curcumae rhizoma (CR) is the dried rhizoma of Curcuma phaeocaulis Val (CP), Curcuma kwangsiensis S. G. Lee et C. F. Liang (CK) and Curcuma wenyujin Y. H. Chen et C. Ling (CW), used widely to treat blood stagnation in China. Currently, quality control indicators for CR are limited to chemical composition analysis. It is unclear whether the current quality standard of the multicomponent content of CR can reflect clinical effects, due to the lack of the evaluation of biological effects. A method of evaluating quality was developed called the effect-constituent index (ECI). By meticulously measuring and calibrating the key active components, the ECI offers a comprehensive assessment of the CR\'s biological effects, establishing a crucial link to clinical efficacy and safety. An analytical protocol employing high-performance liquid chromatography (HPLC) was devised to ascertain the presence and measure ten principal constituents within CR sourced from various species and the content of total volatile oil was also measured. An In vitro antiplatelet aggregation assay was developed to measure the antiplatelet aggregation biopotencies of thirty batches of CR and ten main components. Then, the calibration weights for each constituent in the ECI were determined based on the antiplatelet aggregation biopotency values of eight components with notable efficacy. The ECI calculation involved summing the products obtained by multiplying the content (Ci) of each component by its corresponding biopotency weight (Wi). Correlation analysis unveiled a the most robust correlation (R = 0.8579, p < 0.001) between ECI and antiplatelet aggregation biopotency of CR, when compared to individual components or volatile oil content. The devised ECI, synthesizing chemical and biological data pertinent to clinical effectiveness, facilitates a nuanced assessment of CR quality across various species in its efficacy in treating blood stagnation. This method addresses the challenge of guaranteeing effectiveness through chemical analysis alone. This study offers substantiation for the applicability of the ECI as a tool for assessing the quality of traditional Chinese medicine (TCM).
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  • 文章类型: Journal Article
    海马属是一种具有高药用和保健价值的多来源动物。全世界大约有57种海马,其中大约14种可以用作药物,显示抗氧化,抗炎,抗抑郁药,抗高血压,抗前列腺增生,防病毒,抗凋亡,抗疲劳,等等。而这些药理作用主要与其活性成分有关,包括氨基酸,丰富的蛋白质(肽和寡肽),脂肪酸,核苷,类固醇,和其他小分子化合物。鉴定海马物种的主要手段是形态学鉴定,显微鉴定,薄层色谱法,指纹方法和基因组学方法。这篇综述将为探索提供有用的见解,未来海马的进一步研究和精准用药。
    The genus Hippocampus is a multi-origin animal species with high medicinal and healthcare values. About 57 species of Hippocampus spread worldwide, of which about 14 species can be used as medicine, showing anti-oxidation, anti-inflammation, anti-depressant, anti-hypertension, anti-prostatic hyperplasia, antivirus, anti-apoptotic, antifatigue, and so on. And those pharmacological effects are mainly related to their active ingredients, including amino acids, abundant proteins (peptides and oligopeptides), fatty acids, nucleosides, steroids, and other small molecular compounds. The main means of authentication of Hippocampus species are morphological identification, microscopic identification, thin layer chromatography method, fingerprint method and genomics method. This review will provide useful insight for exploration, further study and precise medication of Hippocampus in the future.
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  • 文章类型: Journal Article
    背景:近年来,随着人类活动的增加,全球气候变化导致栖息地退化或稀有药用植物的迁移,可能会影响草药的质量。黄芪变种。蒙古是中国西北地区一种珍贵的散装药材。随着国内和国际市场对这种药草的需求不断增加,确保优质黄芪的可持续发展至关重要。在这项研究中,应用了最大熵(Maxent)模型,从而合并了136条分发记录,以及膜虫的39个环境因素。Mongholicus,评估该物种在气候变化下在中国的质量区划和潜在分布。
    结果:结果表明,海拔,年平均温度,最潮湿月份的降水,六月的太阳辐射,最温暖季度的平均温度是影响黄芪甲苷和黄芪多糖在A中积累的关键环境因素。Mongholicus.在十二个主要的环境变量中,年平均温度,高程,最潮湿月份的降水,11月份的太阳辐射是影响膜虫分布的四个最重要因素。Mongholicus.此外,生态位模型表明,高度适宜的栖息地主要位于甘肃中西部,青海东部,陕北,宁夏南部,内蒙古中部,山西中部,河北北部。然而,气候变化下的未来预测表明,这些合适的地区会收缩,向东北高纬度和高海拔山脉转移。
    结论:这些发现为制定膜虫的适应性策略提供了必要的见解。蒙古栽培以应对气候变化,并可以为该物种的未来研究提供信息。通过考虑已确定的环境因素和预测的气候变化的潜在影响,我们可以可视化优质黄芪的区域分布,并制定保护策略以保护和恢复其合适的栖息地。
    BACKGROUND: In recent years, global climate change in tandem with increased human activity has resulted in habitat degradation or the migration of rare medicinal plants, potentially impacting the quality of medicinal herbs. Astragalus membranaceus var. mongholicus is a valuable bulk medicinal material in Northwest China. As the demand for this medicinal herb continues to increase in both domestic and international markets, ensuring the sustainable development of high-quality Astragali Radix is important. In this study, the maximum entropy (Maxent) model was applied, thereby incorporating 136 distribution records, along with 39 environmental factors of A. membranaceus var. mongholicus, to assess the quality zonation and potential distribution of this species in China under climate change.
    RESULTS: The results showed that the elevation, annual mean temperature, precipitation of wettest month, solar radiation in June, and mean temperature of warmest quarter were the critical environmental factors influencing the accumulation of astragaloside IV and Astragalus polysaccharide in A. membranaceus var. mongholicus. Among the twelve main environmental variables, annual mean temperature, elevation, precipitation of the wettest month, and solar radiation in November were the four most important factors influencing the distribution of A. membranaceus var. mongholicus. In addition, ecological niche modelling revealed that highly suitable habitats were mainly located in central and western Gansu, eastern Qinghai, northern Shaanxi, southern Ningxia, central Inner Mongolia, central Shanxi, and northern Hebei. However, the future projections under climate change suggested a contraction of these suitable areas, shifting towards northeastern high-latitude and high-elevation mountains.
    CONCLUSIONS: The findings provide essential insights for developing adaptive strategies for A. membranaceus var. mongholicus cultivation in response to climate change and can inform future research on this species. By considering the identified environmental factors and the potential impacts of the predicted climate changes, we can visualize the regional distribution of high-quality Radix Astragali and develop conservation strategies to protect and restore its suitable habitats.
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