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| 1 | Comprehensive strategy of conduit guidance combined with VEGF producing Schwann cells accelerates peripheral nerve repair显示文摘Peripheral nerve regeneration requires stepwise and well-organized establishment of microenvironment.Since local delivery of VEGF-A in peripheral nerve repair is expected to promote angiogenesis in the microenvironment and Schwann cells(SCs)play critical role in nerve repair,combination of VEGF and Schwann cells may lead to efficient peripheral nerve regeneration.VEGF-A overexpressing Schwann cells were established and loaded into the inner wall of hydroxyethyl cellulose/soy protein isolate/polyaniline sponge(HSPS)conduits.When HSPS is mechanically distorted,it still has high durability of strain strength,thus,can accommodate unexpected strain of nerve tissues in motion.A 10 mm nerve defect rat model was used to test the repair performance of the HSPS-SC(VEGF)conduits,meanwhile the HSPS,HSPS-SC,HSPS-VEGF conduits and autografts were worked as controls.The immunofluorescent co-staining of GFP/VEGF-A,Ki67 and MBP showed that the VEGF-A overexpressing Schwann cells could promote the proliferation,migration and differentiation of Schwann cells as the VEGF-A was secreted from the VEGF-A overexpressing Schwann cells.The nerve repair performance of the multifunctional and flexible conduits was examined though rat behavioristics,electrophysiology,nerve innervation to gastrocnemius muscle(GM),toluidine blue(TB)staining,transmission electron microscopy(TEM)and NF200/S100 double staining in the regenerated nerve.The results displayed that the effects on the repair of peripheral nerves in HSPS-SC(VEGF)group was the best among the conduits groups and closed to autografts.HSPS-SC(VEGF)group exhibited notably increased CD31+endothelial cells and activation of VEGFR2/ERK signaling pathway in the regenerated nerve tissues,which probably contributed to the improved nerve regeneration.Altogether,the comprehensive strategy including VEGF overexpressing Schwann cells-mediated and HSPS conduit-guided peripheral nerve repair provides a new avenue for nerve tissue engineering. | Ping Wu Zan Tong Lihua Luo Yanan Zhao Feixiang Chen Yinping Li Céline Huselstein Qifa Ye Qingsong Ye Yun Chen | 2021 | Bioactive Materials2021，6，10： | 4 |
| 2 | Fine particulate matter(PM_(2.5)/PM_(1.0)) in Beijing,China: Variations and chemical compositions as well as sources显示文摘Particulate matter(i.e.,PM_(1.0) and PM_(2.5)),considered as the key atmospheric pollutants,exerts negative effects on visibility,global climate,and human health by associated chemical compositions.However,our understanding of PM and its chemical compositions in Beijing under the current atmospheric environment is still not complete after witnessing marked alleviation during 2013–2017.Continuous measurements can be crucial for further air quality improvement by better characterizing PM pollution and chemical compositions in Beijing.Here,we conducted simultaneous measurements on PM in Beijing during 2018–2019.Results indicate that annualmean PM_(1.0) and PM_(2.5) concentrations were 35.49±18.61μg/m^(3) and 66.58±60.17μg/m^(3),showing a positive response to emission controls.The contribution of sulfate,nitrate,and ammonium(SNA)played an enhanced role with elevated PM loading and acted as the main contributors to pollution episodes.Discrepancies observed among chemical species between PM_(1.0) and PM_(2.5) in spring suggest that sand particles trend to accumulate in the range of 1–2.5μm.Pollution episodes occurred accompanied with southerly clusters and high formation of SNA by heterogeneous reactions in summer and winter,respectively.Results from positive matrix factorization(PMF)combined with potential source contribution function(PSCF)models showed that potential areas were seasonal dependent,secondary and vehicular sources became much more important compared with previous studies in Beijing.Our study presented a continuous investigation on PM and sources origins in Beijing,which provides a better understanding for further emission control as well as a reference for other cities in developing countries. | Lining Luo Xiaoxuan Bai Shuhan Liu Bobo Wu Wei Liu Yunqian Lv Zhihui Guo Shumin Lin Shuang Zhao Yan Hao Jiming Hao Kai Zhang Aihua Zheng Hezhong Tian | 2022 | Journal of Environmental Sciences2022，34，11： | 3 |
| 3 | A Multicenter Application and Evaluation of the Oxford Classification of IgA Nephropathy in Adult Chinese Patients显示文摘 | Cai-Hong Zeng Weibo Le Zhaohui Ni Minfang Zhang Lining Miao Ping Luo Rong Wang Zhimei Lv Jianghua Chen Jiong Tian Nan Chen Xiaoxia Pan Ping Fu Zhangxue Hu Lining Wang Qiuling Fan Hongguang Zheng Dewei Zhang Yaping Wang Yanhong Huo Hongli Lin Shuni Chen Sh | 2012 | American Journal of Kidney Diseases2012，，5： | 2 |
| 4 | Genetic algorithms in resource optimization of construction project 显示文摘 | Zhang Lianying Luo Gang Lu Lining | 2001 | J of Tianjin University2001，34，2： | 1 |
| 5 | Reprogramming somatic cells to cells with neuronal characteristics by defined medium both in vitro and in vivo显示文摘Background:Currently,direct conversion from somatic cells to neurons requires virus-mediated delivery of at least one transcriptional factor or a combination of several small-molecule compounds.Delivery of transcriptional factors may affect genome stability,while small-molecule compounds may require more evaluations when applied in vivo.Thus,a defined medium with only conventional growth factors or additives for cell culture is desirable for inducing neuronal trans-differentiation.Results:Here,we report that a defined medium(5C)consisting of basic fibroblast growth factor(bFGF),N2 supplement,leukemia inhibitory factor,vitamin C(Vc),andβ-mercaptoethanol(βMe)induces the direct conversion of somatic cells to cells with neuronal characteristics.Application of 5C medium converted mouse embryonic fibroblasts(MEFs)into TuJ+neuronal-like cells,which were capable of survival after being transplanted into the mouse brain.The same 5C medium could convert primary rat astrocytes into neuronal-like cells with mature electrophysiology characteristics in vitro and facilitated the recovery of brain injury,possibly by inducing similar conversions,when infused into the mouse brain in vivo.Crucially,5C medium could also induce neuronal characteristics in several human cell types.Conclusions:In summary,this 5C medium not only provides a means to derive cells with neuronal characteristics without viral transfection in vitro but might also be useful to produce neurons in vivo for neurodegenerative disease treatment. | Songwei He Yiping Guo Yixin Zhang Yuan Li Chengqian Feng Xiang Li Lilong Lin Lin Guo Haitao Wang Chunhua Liu Yi Zheng Chuanming Luo Qiang Liu Fuhui Wang Hao Sun Lining Liang Lingyu Li Huanxing Su Jiekai Chen Duanqing Pei Hui Zheng | 2015 | Cell Regeneration2015，4，1： | 0 |
| 6 | Water-responsive gel extends drug retention and facilitates skin penetration for curcumin topical delivery against psoriasis显示文摘Psoriasis is a chronic inflammatory skin disease characterized by erythema,scaling,and skin thickening.Topical drug application is recommended as the first-line treatment.Many formulation strategies have been developed and explored for enhanced topical psoriasis treatment.However,these preparations usually have low viscosity and limited retention on the skin surface,resulting in low drug delivery efficiency and poor patient satisfaction.In this study,we developed the first water-responsive gel(WRG),which has a distinct water-triggered liquid-to-gel phase transition property.Specifically,WRG was kept in a solution state in the absence of water,and the addition of water induced an immediate phase transition and resulted in a high viscosity gel.Curcumin was used as a model drug to investigate the potential of WRG in topical drug delivery against psoriasis.In vitro and in vivo data showed that WRG formulation could not only extend skin retention but also facilitate the drug permeating across the skin.In a mouse model of psoriasis,curcumin loaded WRG(CUR-WRG)effectively ameliorated the symptoms of psoriasis and exerted a potent anti-psoriasis effect by extending drug retention and facilitating drug penetration.Further mechanism study demonstrated that the anti-hyperplasia,anti-inflammation,anti-angiogenesis,anti-oxidation,and immunomodulation properties of curcumin were amplified by enhanced topical drug delivery efficiency.Notably,neglectable local or systemic toxicity was observed for CUR-WRG application.This study suggests that WRG is a promising formulation for topically psoriasis treatment. | Qing Yao Yuanyuan Zhai Zhimin He Qian Wang Lining Sun Tuyue Sun Leyao Lv Yingtao Li Jiyong Yang Donghui Lv Ruijie Chen Hailin Zhang Xiang Luo Longfa Kou | 2023 | Asian Journal of Pharmaceutical Sciences2023，18，2： | 0 |
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