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Journal of Zhejiang University SCIENCE B

ISSN 1673-1581(Print), 1862-1783(Online), Monthly

Liensinine attenuates inflammation and oxidative stress in spleen tissue in an LPS-induced mouse sepsis model

Abstract: Sepsis is a complex syndrome caused by multiple pathogens and involves multiple organ failure, particularly spleen dysfunction. In 2017, the worldwide incidence was 48.9 million sepsis cases and 11 million sepsis-related deaths were reported (Rudd et al., 2020). Inflammation, oxidative stress, and apoptosis are the most common pathologies seen in sepsis. Liensinine (LIE) is a bisbenzylisoquinoline-type alkaloid extracted from the seed embryo of Nelumbo nucifera. Lotus seed hearts have high content of LIE which mainly has antihypertensive and antiarrhythmic pharmacological effects. It can exert anti-carcinogenic activity by regulating cell, inflammation, and apoptosis signaling pathways (Manogaran et al., 2019). However, its protective effect from sepsis-induced spleen damage is unknown. In this research, we established a mouse sepsis model induced by lipopolysaccharide (LPS) and investigated the protective effects of LIE on sepsis spleen injury in terms of inflammatory response, oxidative stress, and apoptosis.

Key words: Sepsis; Inflammatory; Oxidative stress; Spleen; Liensinine

Chinese Summary  <88> è€ƒè™‘土体抗拉强度的刚性挡土墙地震和é™æ€ä¸»åŠ¨åœŸåŽ‹åŠ›çš„一般å˜åˆ†è§£

作者:肖世国1,2,é½è¿œ2,å¤æ”€3
机构:1西å—交通大学,高速é“路线路工程教育部é‡ç‚¹å®žéªŒå®¤ï¼Œä¸­å›½æˆéƒ½ï¼Œ610031ï¼›2西å—交通大学,土木工程学院,中国æˆéƒ½ï¼Œ610031ï¼›3西å—交通大学,地质工程系,中国æˆéƒ½ï¼Œ610031
目的:传统的主动土压力计算方法在考虑土体抗拉强度时的å‡è®¾ä¸åˆç†ï¼Œå…·æœ‰æ˜Žæ˜¾çš„å±€é™æ€§ã€‚本文考虑土体剪切屈æœå’Œæ‹‰ä¼¸ç ´å准则,ä¸å‡è®¾æ»‘裂é¢å½¢æ€ï¼Œå¹¶åŸºäºŽå¢™åŽå¡«åœŸä¸»åŠ¨æžé™å¹³è¡¡æ¡ä»¶ä¸Žå˜åˆ†æžå€¼åŽŸç†ï¼Œæ出刚性挡土墙的地震和é™æ€ä¸»åŠ¨åœŸåŽ‹åŠ›çš„一般解æžè§£ï¼Œç¡®å®šç›¸åº”于墙体å¯èƒ½è¿åŠ¨æ¨¡å¼çš„主动土压力åˆåŠ›å€¼åŠå…¶ä½œç”¨ç‚¹çš„å˜åŒ–范围。
创新点:1.采用å˜åˆ†æ³•ï¼Œå»ºç«‹åŒæ—¶è€ƒè™‘土体剪切和拉伸破å的刚性挡土墙地震和é™æ€ä¸»åŠ¨åœŸåŽ‹åŠ›çš„紧凑解æžè§£ï¼›2.确立相应于墙体平动和转动å¤åˆè¿åŠ¨æ¨¡å¼çš„刚性挡土墙主动土压力的å¯èƒ½å˜åŒ–范围,以åŠå…¶åˆåŠ›ä½œç”¨ç‚¹çš„åˆç†èŒƒå›´ï¼›3.æ­ç¤º13个基本å‚数对主动土压力的影å“规律,并定é‡ç¡®å®šå‰ªåˆ‡-拉裂å¤åˆæ¨¡å¼çš„滑裂é¢å½¢æ€ä»¥åŠä½œç”¨äºŽæ»‘裂é¢ä¸Šçš„法å‘应力。
方法:1.基于刚性挡土墙åŽä¾§åœŸä½“的主动æžé™å¹³è¡¡çŠ¶æ€ï¼Œé€šè¿‡æ‹Ÿé™åŠ›æ³•å¼•å…¥ç­‰æ•ˆåœ°éœ‡åŠ›ï¼Œå¹¶æ ¹æ®æ‹‰æ ¼æœ—日乘å­æ³•å’Œå˜åˆ†æžå€¼åŽŸç†ï¼Œå»ºç«‹è€ƒè™‘土体剪切与拉裂破å的地震(å«é™æ€ï¼‰ä¸»åŠ¨åœŸåŽ‹åŠ›çš„éšå¼æ±‚解方程;2.è¿ç”¨MATLAB中的fsolve函数,通过å ä»£è®¡ç®—与精度控制,得到主动土压力的计算结果。
结论:1.所æ方法算得的地震和é™æ€ä¸»åŠ¨åœŸåŽ‹åŠ›ï¼Œä¸Žè¯•éªŒåŠç†è®ºç»“果具有较好的一致性,且本方法的适用性更为广泛;2.åŒä¸€åˆšæ€§æŒ¡åœŸå¢™åœ¨ä¸åŒçš„è¿åŠ¨æ¨¡å¼ä¸‹ï¼Œå¢™åŽä¸»åŠ¨åœŸåŽ‹åŠ›æœ‰æ‰€ä¸åŒï¼Œä½†å…¶æ€»æ˜¯åœ¨æœ‰é™èŒƒå›´å†…å˜åŒ–ï¼›3.éšç€åœŸåŽ‹åŠ›åˆåŠ›ä½œç”¨ç‚¹åœ¨å…¶åˆç†å˜åŒ–范围内é€æ¸å‡é«˜ï¼Œæ»‘裂é¢å‰ªåˆ‡æ®µçš„å½¢æ€é€æ¸ç”±å¹³é¢å‘曲é¢å‘展;4.墙åŽåœŸä½“表层的张拉裂隙深度å—ç«–å‘地震系数ã€æ¡å½¢è·è½½åˆ†å¸ƒå®½åº¦åŠå…¶è·å¢™é¡¶æ°´å¹³è·ç¦»çš„å½±å“å‡å¾ˆå°ï¼Œä½†å—其余10个å‚æ•°çš„å½±å“较大。

关键è¯ç»„:主动土压力;抗拉强度;å˜åˆ†æ³•ï¼›æ‹Ÿé™åŠ›æ³•ï¼›æ¡å½¢è¶…è½½


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DOI:

10.1631/jzus.B2200340

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On-line Access:

2023-02-05

Received:

2022-07-01

Revision Accepted:

2022-09-04

Crosschecked:

2023-02-09

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