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Ying Tang,Shuyan Yang,Wendan He,Lei Liu,Zhongfei Zhang 한국섬유공학회 2020 Fibers and polymers Vol.21 No.6
Chinese gallnut (Galla chinensis) is rich in hydrolyzable tannins, which, when mordanted with ferrous ions,produces intense black color on keratinous fiber and makes it a desirable natural hair dye in Asian countries. However,extracted tannins from Chinese gallnut are susceptible to chemical degradation by physicochemical factors (heat, UV, andhigh pH) that limited the utilization and commercialization of this plant colorant in color cosmetics. Hence, this study wasaimed to improve the storage and application stability of Chinese gallnut extract by spray-drying microencapsulation. Different combinations of maltodextrin (MD) and gum arabic (GA) were used as encapsulating agents and the effects on theencapsulation efficiency, morphology, physicochemical properties, in vitro toxicity, and stability were investigated. Theresults showed that an increase of MD proportions in the wall matrix resulted in the production of more spherical shapedparticles with larger size, decreased bulk density, and improved solubility in water. Furthermore, microcapsules covered withMD alone showed the maximum stability with respect to heat, UV, and formulation at alkaline pH. When applied for dyeingof human gray hairs, intense black color could be achieved by using the MD-covered microcapsule formulations and thedyeings are stable to multiple washings and simulated sunlight. Therefore, this study examines a promising strategy forstabilizing tannin-rich extract from Chinese gallnut while maintaining its dyeing efficiency, which will in turn promote itsutilization in hair coloring cosmetics.
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Naiyi Liu,Na Li,Pengyu Yang,Chunqin Sun,Jie Fang,Shuyan Wang 한국유전학회 2018 Genes & Genomics Vol.40 No.1
The monotypic genus Damora (Nymphalidae, Heliconiinae) contains a single species, Damora sagana, which is widely distributed across southern China. Herein, its complete mitogenome was sequenced to further understand lepidopteran mitogenome characteristics, reconstruct the nymphalid family phylogeny, and infer the subdivision of Heliconiinae species. The circular mitogenome was 15,151 bp long, abundant in A and T, and comprised of 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, 2 ribosomal RNA (rRNA) genes, and one control region with a gene arrangement typical of lepidopteran mitogenomes. ATN codons initiated all PCGs, except cytochrome c oxidase subunit 1 (COX1), which was initiated by a CGA sequence as has been observed in other lepidopterans. Three PCGs (COX1, COX2 and ND4) employed a single T termination signal, whereas others had the typical complete termination codon (TAA). All tRNA genes were folded into the typical cloverleaf structure except for tRNA-Ser (AGN). The A+T-rich region included the conserved motif ‘ATAGA’ followed by a 17 bp poly-T stretch, which was also observed in tribe Argynnini mitogenomes. A phylogenetic tree was constructed via multiple methods using the 13 PCGs data of D. sagana and other available mitogenomes of nymphalid species. All three phylogenetic trees yielded the same topology. These results were consistent with those from previous studies of most major nymphalid groups, except those regarding tribe subdivision in certain subfamilies such as Argynnini + (Acraeini + Heliconiini) for Heliconiine. Furthermore, our analyses identified that the genus Cethosia was grouped with the genus Acraea composing the tribe Acraeini with strong support.
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Ying Tang,Lei Liu,Jinju Han,Zhaolun Zhang,Shuyan Yang,Shuxian Li,Shuxian Li,Zhanhua Fan,Hua Zhao 한국섬유공학회 2021 Fibers and polymers Vol.22 No.2
Herbal extracts have recently received considerable interest in acne therapy owing to their enhanced skincompatibility compared with antibiotics and synthetic agents. In this study, electrospun poly (vinyl alcohol)/chitosan (PVA/CS) fibrous patch incorporating a combination of herbal extracts with complementary mechanisms of action was developedas an alternative acne therapy for patients with resistance to the conventional treatments. The herbal extracts-loadedelectrospun fibers displayed uniform and smooth-surfaced nanofibers (dia. 100-300 nm), high drug loading efficiency (89.5-97.7 %) and good water absorbing properties. Results of the in vitro release and antibacterial studies suggest the patches arecapable of sustained release of polyphenol-rich extracts, which may, together with the chitosan present in the fiber, endow thepatch with potent bacterial inhibition of Propionibacterium acnes. The herbal extracts-loaded patches exhibited pronouncedclinical therapeutic efficacy in treating mild-to-moderate facial acne by rapidly reducing inflamed lesions and restoringepidermal barrier. Also, the herbal patches demonstrated improved biocompatibility or tolerability in comparison with thesynthetic drug benzoyl peroxide. Overall, the present study has provided a facile approach to develop biocompatiblepolymers based electrospun fibrous patch for the efficient delivery of herbal extracts for topical skin therapy, opening newperspectives for a new generation of cosmetotextiles.
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Xiaoning Wu,Xiaoqian Xu,Jialing Zhou,Yameng Sun,Huiguo Ding,Wen Xie,Guofeng Chen,Anlin Ma,Hongxin Piao,Bingqiong Wang,Shuyan Chen,Tongtong Meng,Xiaojuan Ou,Hwai-I Yang,Jidong Jia,Yuanyuan Kong,Hong Yo 대한간학회 2023 Clinical and Molecular Hepatology(대한간학회지) Vol.29 No.3
Background/Aims: Existing hepatocellular carcinoma (HCC) prediction models are derived mainly from pretreatment or early on-treatment parameters. We reassessed the dynamic changes in the performance of 17 HCC models in patients with chronic hepatitis B (CHB) during long-term antiviral therapy (AVT). Methods: Among 987 CHB patients administered long-term entecavir therapy, 660 patients had 8 years of follow-up data. Model scores were calculated using on-treatment values at 2.5, 3, 3.5, 4, 4.5, and 5 years of AVT to predict threeyear HCC occurrence. Model performance was assessed with the area under the receiver operating curve (AUROC). The original model cutoffs to distinguish different levels of HCC risk were evaluated by the log-rank test. Results: The AUROCs of the 17 HCC models varied from 0.51 to 0.78 when using on-treatment scores from years 2.5 to 5. Models with a cirrhosis variable showed numerically higher AUROCs (pooled at 0.65–0.73 for treated, untreated, or mixed treatment models) than models without (treated or mixed models: 0.61–0.68; untreated models: 0.51–0.59). Stratification into low, intermediate, and high-risk levels using the original cutoff values could no longer reflect the true HCC incidence using scores after 3.5 years of AVT for models without cirrhosis and after 4 years of AVT for models with cirrhosis. Conclusions: The performance of existing HCC prediction models, especially models without the cirrhosis variable, decreased in CHB patients on long-term AVT. The optimization of existing models or the development of novel models for better HCC prediction during long-term AVT is warranted.
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