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Agmatine promotes expression of brain-derived neurotrophic factor in brainstem facial nucleus in the rat facial nerve injury model

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Neural Regeneration Research 2008年第6期3卷 618-620页

作者： li fang Wenlong luo Department of Otolaryngology-Head and Neck Surgery the Second Affiliated Hospital Chongqing University of Medical Sciences Chongqing400010 China

BACKGROUND： Studies have shown that agmatine can reduce inhibition of neuronal regeneration by increasing cyclic adenosine monophosphate and brain-derived neurotrophic factor （BDNF） in the hippocampus of morphine-dependent rats. The hypothesis that agmatine exerts similar effects on facial nerve injury deserves further analysis. OBJECTIVE： To study the effects of peritoneal agmatine injection on BDNF levels in the rat brainstem after facial nerve injury. DESIGN, TIME AND SETTING： A controlled animal experiment was performed at the Department of Otolaryngology-Head and Neck Surgery at the Second Affiliated Hospital, Chongqing University of Medical Sciences （Chongqing, China）, between October and December in 2007. MATERIALS： Twenty-four male Sprague-Dawley rats were randomly divided into a control, a lesion, and an agmatine treatment group, with eight rats in each group. Bilateral facial nerve anastomosis was induced in the lesion and agmatine treatment groups, while the control group remained untreated. A rat BDNF Enzyme-linked immunosorbent assay kit was used to measure BDNF levels in the brainstem facial nucleus. METHODS： Starting on the day of lesion, the agmatine group received a peritoneal injection of 100 mg/kg agmatine, once per day, for a week, whereas rats in the lesion group received saline injections. MAIN OUTCOME MEASURES： BDNF levels in the brainstem containing facial nucleus were measured by EliSA. RESULTS： Twenty-four rats were included in the final analysis without any loss. Two weeks after lesion, BDNF levels were significantly higher in the lesion group than in the control group （P 〈 0.01）. A significant increase was noted in the agmatine group compared to the lesion group （P 〈 0.01）. CONCLUSION： Agmatine can substantially increase BDNF levels in the rat brainstem after facial nerve injury.

关键词： agmatine facial nerve injury brain-derived neurotrophic factor EliSA

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Effects of soil moisture regimes on growth and photosynthesis of the riparian plant Bolboschoenus planiculmis

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Forestry Studies in China 2013年第2期15卷 105-113页

作者： lin HUANG Yi-Ke PENG Hong-li li Ming-Xiang ZHANG fang-li luo College of Nature Conservation Beijing Forestry University

Plants distributed in riparian regions experience frequent episodes of flooding and drought between years, and hence, riparian plants need to be flood- and drought-tolerant. Riparian plants possess various traits to survive flooding, while their sensitivity to drought has received less attention. To investigate the growth and photosynthetic responses of a riparian species （Bolboschoenus planiculmis） to flooding and drought, plants of this species were subjected to 60-d flooding or drought stress under greenhouse conditions. Growth and photosynthetic traits were measured at the end of the treatments. As well, we determined the efficiency of photosynthetic apparatus in mature leaves. Plants of B. planiculmis adequately adjusted their growth and photosynthetic traits under both flooding and drought conditions. Flooding did not affect the above-ground growth of B. planiculmis. Increased growth of roots and rhizomes and the generation of new tubers suggested a high ability of below-ground lateral growth by capturing resources under flooding conditions. Enhanced photosynthetic capacity, retained leaf pigment concentrations and chlorophyll a fluorescence capacity indicated photosynthetic adaptation to flooding. In contrast, drought significantly decreased the above-ground growth of B. planiculmis, especially the leaves, thereby minimizing water loss due to transpiration. Its increased root to shoot ratio and ＂phalanx＂ asexual propagation pattern might enhance soil water uptake ability. Although the functional leaves of B. planiculmis could retain their leaf pigment concentrations, as well as photosynthesis and chlorophyll a fluorescence, the total biomass of plants decreased, which may be a consequence of the reduced leaf area, suggesting adverse effects by drought. Therefore, both growth and photosynthetic responses of B. planiculmis are likely to contribute to the ability of this species to thrive in riparian regions, but remain susceptive to drought.

关键词： drought flooding growth photosynthesis Bolboschoenus planiculmis riparian plant

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Effects of clonal integration and nitrogen supply on responses of a clonal plant to short-term herbivory

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Journal of Plant Ecology 2019年第4期12卷 624-635页

作者： Bi-Cheng Dong li-Min Zhang Kai-Yu li Xiao-Ting Hu Pu Wang Yong-Jian Wang fang-li luo Hong-li li Fei-Hai Yu School of Nature Conservation Beijing Forestry UniversityBeijing 100083China Institute of Botany Chinese Academy of SciencesBeijing 100093China College of Horticulture and Forestry Sciences Huazhong Agricultural UniversityWuhan 430070China Institute of Wetland Ecology&Clone Ecology/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou UniversityTaizhou 318000China

Aims Clonal integration,*** sharing between interconnected ramets,can help clonal plants tolerate abiotic ***,few studies have directly examined the ecological significance of clonal integration in the ability of clonal plants to tolerate biotic stress such as *** We grew clonal fragments of an invasive clonal plant Alternanthera philoxeroides,each consisting of an apical part(relatively young)and a basal part(relatively old),at two levels(low and high)of soil nitrogen(N).For each fragment,the apical part was subjected to either no herbivory or herbivory for 2 weeks by a specialist insect,Agasicles hygrophila,and was either connected with or discon-nected from the basal part not subjected to *** Findings Herbivory in the apical part severely reduced leaf growth(leaf mass,leaf number or leaf area)and ramet production of both apical and basal parts,and increased root to shoot ratio of the apical *** of herbivory and soil N,stem connection between the apical and the basal part decreased root to shoot ratio of the ap-ical part,but did not change its growth ***,con-nection increased stem N concentration of the apical part growing under high-N supply and decreased stem carbon(C)concentration of the apical part under low-N *** contrast,connection in-creased root to shoot ratio of the basal part,but reduced its leaf and ramet *** also increased leaf and stem C concentrations of the basal part under low-N ***,clonal integration can be beneficial for the early development of young *** ramets,but not for their local adaptation to herbivory damage by ***.

关键词： Agasicles hygrophila Alternanthera philoxeroides foliar herbivory invasive species physiological integration

Effects of salinity and clonal integration on the amphibious plant Paspalum paspaloides:growth,photosynthesis and tissue ion regulation

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Journal of Plant Ecology 2019年第1期12卷 45-55页

作者： Ya-Ping Xing Guan-Wen Wei fang-li luo Chao-Yang li Bi-Cheng Dong Jie-Shan Ji Fei-Hai Yu School of Nature Conservation Beijing Forestry UniversityBeijing 100083China Central South University of Forestry and Technology Changsha 410004HunanChina Hydrographic Bureau of Jining Jining 272019ShandongChina Taizhou University Taizhou 318000ZhejiangChina

Aims Clonal integration can increase performance of clonal plants suffer-ing from environmental stress,and clonal plants in many wetlands commonly face stress of flooding accompanied by ***,few studies have tested roles of clonal integration in amphibious plants expanding from terrestrial to aquatic saline *** Basal(older)ramets of clonal fragments of Paspalum paspaloides were grown in soil to simulate terrestrial habitats,whereas their apical(younger)ramets were placed at the surface of saline water containing 0,50,150 and 250 mmol l^(−1)NaCl to mimic different salinity levels in aquatic *** connecting the apical and basal ramets were either intact(connected)to allow clonal integra-tion or severed(disconnected)to prevent *** Findings Increasing salinity level significantly decreased the growth of the apical ramets of ***,and such effects on the leaf growth were much higher without than with stolon connection after 60-day ***,leaf and total mass ratios of the connected to the disconnected apical ramets were higher at high than at low saline ***,Fv/Fm and F/Fm′of the apical ramets were higher with than without stolon connection in highly saline *** results suggest that clonal integration can benefit the spread of apical ramets from terrestrial soil into saline water,and that the positive effects increase with increasing ***,clonal integration did not significantly affect the growth of the whole *** to clonal integration,Na^(+)could be translocated from the apical to the basal ramets to alleviate ion toxicity in apical *** results suggest that clonal integration benefits the expansion of *** from terrestrial to aquatic saline habitats via maintained photosynthetic capacities and changed biomass allocation pattern.

关键词： amphibious clonal plant clonal integration Na^(+) salt stress wetland restoration

Soil heterogeneity affects ramet placement of Hydrocotyle vulgaris

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Journal of Plant Ecology 2015年第1期8卷 91-100页

作者： Bi-Cheng Dong Jiu-Zhong Wang Rui-Hua liu Ming-Xiang Zhang fang-li luo Fei-Hai Yu School of Nature Conservation Beijing Forestry UniversityQinghua East Road 35Haidian DistrictBeijing 100083China School of Forestry Beijing Forestry UniversityQinghua East Road 35Haidian DistrictBeijing 100083China Research Center for Eco-Environmental Sciences Chinese Academy of SciencesShuangqing Road 18Haidian DistrictBeijing 100085China

Aims Soil heterogeneity is common in natural *** may trigger for-aging responses(placing more ramets and/or roots in nutrient-rich patches than in nutrient-poor patches)and further affect the growth of ***,the impact of soil heterogeneity on competitive interactions has been little *** We conducted a greenhouse experiment to investigate the effects of soil heterogeneity on intraspecific competition with a stolonif-erous herb Hydrocotyle *** grew one(without com-petition)or nine ramets(with competition)of *** under a homogeneous environment and two heterogeneous environ-ments differing in patch size(large or small patches).In the het-erogeneous treatment,the soil consisted of the same number of nutrient-rich and nutrient-poor patches arranged in a chessboard manner,and in the homogeneous treatment,the soil was an even mixture of the same amount of the nutrient-rich and the nutrient-poor *** Findings Irrespective of intraspecific competition,*** showed for-aging responses to soil heterogeneity in the large patch treatment,*** produced significantly more biomass,ramets,aboveground mass and root mass in the nutrient-rich patches than in the nutrient-poor *** the small patch treatment,foraging responses were observed when intraspecific competition was present,but responses were not observed when there was no ***,we find a significant effect of soil heterogeneity on neither overall growth nor competitive intensity of *** results suggest that foraging responses to soil heterogeneity may not necessarily be adaptive and intraspecific competition may not be influenced by soil heterogeneity.

关键词： clonal plant competition environmental heterogeneity foraging response patch size physiological integration

黄河三角洲溶解有机质的光谱特征及其驱动因素

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Journal of Plant Ecology 2023年第1期16卷 150-162页

作者： Yuan Cui fang-li luo Ming-Xiang Zhang Fei-Hai Yu School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration Beijing 100083China Institute of Wetland Ecology&Clone Ecology Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhou 318000China

河口三角洲是生物地球化学循环的热点地区。了解该区域溶解有机质(DOM)的来源及其驱动因素对于评估其在调节全球碳通量中的作用具有重要意义。本研究分析了黄河三角洲淡水和潮汐区域中土壤DOM的光谱特征。通过平行因子分析(PAFARAC),以... 详细信息

河口三角洲是生物地球化学循环的热点地区。了解该区域溶解有机质(DOM)的来源及其驱动因素对于评估其在调节全球碳通量中的作用具有重要意义。本研究分析了黄河三角洲淡水和潮汐区域中土壤DOM的光谱特征。通过平行因子分析(PAFARAC),以及与在线数据库(http://***)的对比最终确定了5种荧光组分(包括2种类腐殖酸、2种类蛋白质和1种可能的污染物)。淡水和潮汐区域中土壤DOM及各荧光组分的浓度、光谱性质和来源均不同。潮汐区DOM的浓度较低,而相对分子质量较高。在淡水地区,土壤DOM主要来源于浮游植物和微生物;而在潮汐地区,土壤DOM主要来源于微生物和人类活动。这两个地区土壤DOM的差异主要由环境因素驱动,尤其是土壤碳(C)、氮(N)及其化学计量比C/N,能够解释DOM和CDOM变化的80.7%和69.6%。此外,浮游植物也对该地区土壤中的DOM、CDOM和荧光组分(C1–C4)有重要的影响,结果发现它们之间存在显著的正相关关系。研究结果表明,黄河三角洲土壤DOM的浓度和组成受土壤性质和浮游植物密度的强烈驱动。

关键词：溶解有机质河口湿地淡水湿地光谱特征潮汐湿地

地下芽植物芽库密度响应环境干扰的Meta分析

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Journal of Plant Ecology 2024年第3期17卷 28-38页

作者： Tao fang Duo Ye Ju-Juan Gao fang-li luo Yao-Jun Zhu Fei-Hai Yu School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China College of life Sciences Zhejiang Normal UniversityJinhua 321000China Fujian MinJiang River Estuary Wetland National Nature Reserve Administrative Offce Fuzhou 350200China The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration Beijing 100083China Institute of Ecological Conservation and Restoration Chinese Academy of ForestryBejing 100083China National Positioning Observatory for Mangrove Wetland Ecosystems Zhanjiang 524448China Institute of Wetland Ecology&Clone Ecology/Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou UniversityTaizhou 318000China

地下芽库是地下芽植物地下储存器官产生的无性繁殖体的集合,是地下芽植物繁殖的主要方式。地下芽库密度反映了地下芽植物群落的潜在更新能力。然而,不同的扰动和生境类型对地下芽库密度的影响尚缺乏全面的了解;此外,不同类型地下芽库对... 详细信息

地下芽库是地下芽植物地下储存器官产生的无性繁殖体的集合,是地下芽植物繁殖的主要方式。地下芽库密度反映了地下芽植物群落的潜在更新能力。然而,不同的扰动和生境类型对地下芽库密度的影响尚缺乏全面的了解;此外,不同类型地下芽库对不同扰动类型的响应是否存在差异也不明确。本研究通过Meta分析系统收集了环境扰动对地下芽库密度影响的相关文献,计算了不同扰动和生境类型对各地下芽库类型密度影响的累计效应值。结果发现,由于地下芽库对扰动的响应存在相反或波动的特征,整体上环境扰动对地下芽库密度的影响较小,而干旱对芽库密度具有负效应。总体而言,环境扰动降低了根状茎芽的密度,但增加了分蘖芽的密度。环境扰动降低了湿地中的地下芽库密度,但在其它生境类型中并未发现显著影响。因此,地下芽植物的芽库对扰动有着很强的抗性和弹性,地下芽库的密度变化取决于扰动的类型、分布的生境和受扰动的芽库类型。

关键词：无性繁殖体地下芽植物生境类型扰动类型地下发芽器官

Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao Zhou Xiongbin luo Hang li Shan Guo Zhuang Tong Xiaotao Zhou Xu li Zhaohui Hou Shuquan liang Guozhao fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Solvation

Brain endothelial cyclic GMP-AMP synthase(cGAS)-stimulator of interferon genes(STING)signaling pathway in aging and neurodegeneration

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Neural Regeneration Research 2025年第7期20卷 2005-2007页

作者： Bryan Sun Lulin li Jian luo Palo Alto Veterans Institute for Research VA Palo Alto Health Care SystemPalo AltoCAUSA Polytrauma System of Care VA Palo Alto Health Care SystemPalo AltoCAUSA

The cyclic GMP-AMP synthase(cGAS)-stimulator of interferon genes(STING)signaling pathway has emerged as a key mediator of *** current studies primarily attribute its effects to neurons and glial cells,emerging research suggests that cGAS-STING signaling may play a critical role in cerebral vasculature,particularly in brain endothelial ***,studying the role 7of inflammation caused by the cGAS-STING pathway in brain endothelial cells could provide a more comprehensive understanding of neuroinflammatory disease and new avenues for therapeutic ***,we review the multifaceted role of global cGAS-STING signaling in various neurological and neuroinflammatory diseases and the potential contribution of cGAS-STING in brain endothelial cells.

关键词： stimulator interferon inflammation

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