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Bai Weijuan,Deng Fenghong,Zhang Xiaojiang,Zhang Xiaojiang,Xiao Yue’e,Wang Nan,Liu Xuncai,Fan Qunyan,Guo Baozhong 한국응용생명화학회 2023 Applied Biological Chemistry (Appl Biol Chem) Vol.66 No.-
Edible bird's nest (EBN) is a traditional food which was nourishing and functional. Particularly, there is the epidermal growth factor (EGF) in EBN, which is thought to play an important role in promoting skin repair. However, the type and content of EGF in EBN were not determined yet. In this study, the type of EGF in EBN was identified as bird EGF by enzyme-linked immunosorbent assay and this method was validated to be accurate and precise. Moreover, it was found that the content of EGF in raw-unclean EBN, raw-clean EBN and stewed EBN was 3000 pg/g–4000 pg/g and there were no significant differences, which suggested that the batches, origins, forms, stewing temperatures and stewing times of EBN had no effect on the content of EGF in EBN. However, it was due to that enzyme destroyed the primary structure of EGF, the EGF content of neutral protease and trypsin hydrolysates of EBN was lower than that of flavor enzymes, alkaline protease and pepsin hydrolysates of EGF. This study was the first to determine the type and content of EGF in EBN, and provided a theoretical basis for the selection and processing of EBN and using EBN as a source of EGF.
( Yu Zhang ),( Yaoyao Li ),( Zhenfeng Hao ),( Xiangming Li ),( Ping Bo ),( Weijuan Gong ) 대한소화기기능성질환·운동학회 2016 Journal of Neurogastroenterology and Motility (JNM Vol.22 No.2
Background/Aims The functional variant (rs56109847) in the 3′-untranslated regions (3′-UTR) of the serotonin receptor 3E (HTR3E) gene is associated with female diarrhea predominant irritable bowel syndrome (IBS-D) in British populations. However, the relationship of the polymorphism both to HTR3E expression in the intestine and to the occurrence of Chinese functional gastrointestinal disorders has yet to be examined. Methods Polymerase chain reaction amplification and restriction fragment length polymorphism analyses were employed to detect polymorphisms among Chinese Han women, particularly 107 patients with IBS-D, 99 patients with functional dyspepsia (FD), 115 patients with mixed IBS and 69 patients with IBS-D + FD. We also assessed microRNA-510 (miR-510) and HTR3E expression in human colonic mucosal tissues with immunohistochemistry and other methods. Dual-luciferase reporter assays were conducted to examine the binding ability of miR-510 and HTR3E 3′-UTR. Results Genotyping data showed the variant rs56109847 was significantly associated with IBS-D, but not with FD, mixed-IBS, or FD + IBS-D. HTR3E was abundantly expressed around the colonic mucosal glands but less expressed in the stroma. miR-510 expression decreased, whereas HTR3E expression increased in the colonic mucosal tissue of patients with IBS-D compared with those in controls. HTR3E expression was significantly higher in patients with the GA genotype than that in patients with the GG genotype. The single nucleotide polymorphisms disrupted the binding site of miR-510 and significantly upregulated luciferase expression in HEK293 and HT-29 cells. Conclusions The single-nucleotide polymorphisms rs56109847 led to reduced microRNA binding and overexpression of the target gene in intestinal cells, thereby increasing IBS-D risk in the Chinese Han population. The decreased expression of miR-510 might contribute to IBS-D. (J Neurogastroenterol Motil 2016;22:272-281)
Jie Wang,Weijuan Nie,Ming Wang,Chen Zhang,Jian Li,Honglin Luo,Quanchao Zhang,Zhiwei Yang,Yizao Wan 한국섬유공학회 2023 Fibers and polymers Vol.24 No.11
Natural blood vessels possess a multi-layered structure. Herein, we present a bio-inspired double-layered integrated tubular graft with a compact inner layer and a porous outer layer. The inner layer consists of nanofibrous bacterial cellulose (BC) and microfibrous cellulose acetate (CA), which favors the adhesion and proliferation of endothelial cells (ECs). The outer layer, with hierarchical pores including nano-sized pores from pristine BC, median-sized pores (dozens of microns) created by particle leaching, and a large pore (hundreds of microns) array created by laser ablation, is appropriate for the penetration of vascular smooth muscle cells (SMCs). The in-situ biosynthesis was employed to "suture" the two layers, aiming to achieve an integrated tubular structure. The morphology, mechanical properties, and cell behavior of the tubular grafts were characterized. The in vitro study demonstrates that the unique outer layer possesses enhanced SMC penetration compared to the counterpart without hierarchical pores. Overall, the findings of this study demonstrate the potential of such a biomimetic integrated vascular graft for vascular replacement and regeneration.
Compact Phase Detector for Optical-Microwave Synchronization Using Polarization Modulation
Wei, Juan,Zhang, Shuangyou,Kim, Jungwon,Pan, Shilong IEEE 2018 Journal of Lightwave Technology Vol.36 No.19
<P>We propose and demonstrate a compact optical-microwave phase detector taking advantage of polarization modulation. The proposed polarization modulator-based phase detector (PolM-PD) shows 460-attosecond residual timing jitter integrated from 1 Hz to 100 kHz when synchronizing an 8-GHz dielectric resonator oscillator to a free-running 250-MHz mode-locked Er-fiber laser. The absolute single-sideband phase noise of the locked 8-GHz DRO is –138 dBc/Hz (–165 dBc/Hz) at an offset frequency of 10 kHz (10 MHz). The proposed PolM-PD has a compact structure implemented by all commercially available components. Because no fiber loop and delay line are used, the proposed PolM-PD can be potentially integrated on a chip.</P>