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Functional characterization of sensory neuron membrane protein 1a involved in sex pheromone detection of Apolygus lucorum(Hemiptera:Miridae)
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作者 Yan Li Xingkui An +5 位作者 Shuang Shan Xiaoqian Pang Xiaohe Liu Yang Sun Adel Khashaveh Yongjun Zhang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第12期4120-4135,共16页
The mirid bug Apolygus lucorum(Hemiptera:Miridae)is a polyphagous pest that affects a wide range of host plants.Its control remains challenging mainly due to its rapid reproduction,necessitating an understanding of se... The mirid bug Apolygus lucorum(Hemiptera:Miridae)is a polyphagous pest that affects a wide range of host plants.Its control remains challenging mainly due to its rapid reproduction,necessitating an understanding of sex pheromone communication.The recognition of sex pheromones is vital for courtship and mating behaviors,and is mediated by various chemosensory-associated proteins.Among these,sensory neuron membrane protein(SNMP),a CD36-related protein,is suggested to play crucial roles in detecting sex pheromones.In this study,we employed transcriptomic and genomic data from A.lucorum and phylogenetic approaches,and identified four putative SNMP genes(AlucSNMP1a,AlucSNMP1b,AlucSNMP2a,and AlucSNMP2b)with full open reading frames.Expression analysis revealed the ubiquitous presence of AlucSNMP transcripts in multiple tissues,with only AlucSNMP1a exhibiting male-biased expression in the antennae,suggesting its potential role in male chemosensation.Functional analysis using the Xenopus oocyte expression system,coupled with two-electrode voltage clamp recording,demonstrated that the co-expression of AlucSNMP1a with specific pheromone receptors(PRs)and the Odorant receptor co-receptor(Orco)significantly enhanced electrophysiological responses to sex pheromones compared to the co-expression of PRs and Orco alone.Moreover,the results indicated that the presence of AlucSNMP1a not only affected the responsiveness to sex pheromones but also influenced the kinetics(activation and inactivation)of the induced signals.In contrast,the co-expression of AlucSNMP1b with AlucPR/Orco complexes had no impact on the inward currents induced by two pheromone compounds.An examination of the selective pressures on SNMP1 genes across 20 species indicated strong purifying selection,implying potential functional conservation in various insects.These findings highlight the crucial role of AlucSNMP1a in the response to sex pheromones. 展开更多
关键词 mirid bug pheromone perception sensory neuron membrane proteins expression profile receptor interaction evolution
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The Ca^(2+)/CaN/ACC and cAMP/PKA/HK signal pathways are required for PBAN-mediated sex pheromone biosynthesis in Conogethes punctiferalis
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作者 Yao Zhang Zelong She +7 位作者 Ruolan He Shuangyan Yao Xiang Li Xiaoguang Liu Xinming Yin Jizhen Wei Mengfang Du Shiheng An 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第8期2735-2751,共17页
Conogethes punctiferalis is a crop and fruit pest that has caused serious economic losses to agricultural production.This pest relies heavily on its sex pheromone to ensure sexual encounters and subsequent mating succ... Conogethes punctiferalis is a crop and fruit pest that has caused serious economic losses to agricultural production.This pest relies heavily on its sex pheromone to ensure sexual encounters and subsequent mating success.However,the molecular mechanism underlying sex pheromone biosynthesis in this species remains elusive.The present study investigated the detailed mechanism underlying PBAN-regulated sex pheromone biosynthesis in C.punctiferalis by transcriptome sequencing of the C.punctiferalis pheromone glands(PGs)and subsequent functional identification of the target genes.The results showed that female mating started from the first scotophase,and peaked at the second to fifth scotophases in accordance with the release of sex pheromones.PBAN regulated sex pheromone biosynthesis by employing Ca^(2+)and cAMP as secondary messengers,as demonstrated by RNA interference(RNAi),pharmacological inhibitors,and behavioral assays.Further investigation revealed that calcineurin(CaN)and acetyl-CoA carboxylase(ACC)were activated by PBAN/Ca^(2+)signaling,and the RNAimediated knockdown of CaN and ACC transcripts significantly reduced sex pheromone production,ultimately leading to a significantly reduced ability of females to attract males.Importantly,hexokinase(HK)was found to regulate sex pheromone biosynthesis in response to the PBAN/cAMP/PKA signaling pathway,as demonstrated by RNAi,enzyme activity,and pharmacological inhibitor assays.Furthermore,Far2 and Desaturase1 were found to participate in PBAN-regulated sex pheromone biosynthesis.Altogether,our findings revealed that PBAN regulates sex pheromone biosynthesis through the PBANR/Ca^(2+)/CaN/ACC and PBANR/cAMP/PKA/HK pathways in C.punctiferalis,which enriches our comprehension of the details of sex pheromone biosynthesis in moths. 展开更多
关键词 Conogethes punctiferalis sex pheromone CAMP/PKA CALCINEURIN acetyl-CoA carboxylase HEXOKINASE
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Sex Pheromone Components of the Female Black Cutworm Moth in China: Identification and Field Trials 被引量:5
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作者 向玉勇 杨茂发 李子忠 《Zoological Research》 CAS CSCD 北大核心 2009年第1期59-64,共6页
The sex pheromone blend of a China strain of the black cutworm moth Agrotis ypsilon (Rottemberg) (Lepidoptera: Noctuidae) was investigated. Chemical analysis of pheromone gland extracts of 3-day-old females showe... The sex pheromone blend of a China strain of the black cutworm moth Agrotis ypsilon (Rottemberg) (Lepidoptera: Noctuidae) was investigated. Chemical analysis of pheromone gland extracts of 3-day-old females showed that individual isolated glands contained only very small amounts of pheromone. The high-resolution gas chromatography combined with mass spectrometry (GC-MS) analysis showed the presence of Cis-7-dodecenyl acetate (Z7-12:Ac, A), Cis-9-tetradecenyl acetate (Z9-14:Ac, B), Cis- 11-hexadecenyl acetate (Z 11 - 16 :Ac, C), Cis-8-dodecenyl acetate (Z8-12:Ac, E) and Cis-5-decenyl acetate (Z5-10:Ac, D) in biologically active pheromone gland extracts. An extract of one gland from a day 3 female gave the following values for the gland components: 0.245±0.098ng for Z7-12:Ac, 0.080±0.031ng for Z9-14:Ac, 0.089±0.033ng for Z11-16:Ac, 0.085±0.031ng for Z5-10:Ac, 0.105±0.065ng for Z8-12:Ac per female. The percentages of Z7-12:Ac, Z9-14:Ac, Z11-16:Ac, Z5-10:Ac and ZS-12:Ac in pheromone gland extracts from individual females were (meaniSE) 40.451±13.66, 13.176±5.279, 14.943±5.142, 14.392±6.10 and 17.225±9.792 respectively, and the percentages of Z7-12:Ac, Z9-14:Ac and Z11-16:Ac were 58.75±9.429, 18.91±7.539 and 22.34±7.209. Field trials indicated that each single component of sex pheromone was non-effective and captured no males. The lures baited with duality compound of AB (3 : 1) had a certain attraction to males, the mean captured number was 2.6. The attraction ability of the lures baited with ternary compound of ABC (3 : 1 :1) to males added significantly, the mean captured number per trap was 7.40, which was 2.8 times of duality compound of AB (3 : 1). The contents of sex pheromone could obviously affect its capture ability to males, the mean captured number was the highest at the dosage of 200 μg. 展开更多
关键词 Agrotis ypsilon Chemical analysis Field trial Gas chromatography/High-resolution mass spectrometry Internal standard Sex pheromone Standard chemicals
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SYNTHESIS OF 3,7-DIMETHYL-2-TRIDECANYL ACETATE--Active Component of Sex Pheromone of Pine Sawfly Diprion pini 被引量:2
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作者 孟祎 陈立功 +2 位作者 许艳杰 古险峰 宋芸 《Transactions of Tianjin University》 EI CAS 2001年第4期282-285,共4页
The total synthesis of 3,7 dimethyl 2 tridecanyl acetate,the active component of the sex pheromone of diprion pini,was investigated in this paper.The two key synthins blocks,2 methyl octan 1 yl lithium and 3,4 ... The total synthesis of 3,7 dimethyl 2 tridecanyl acetate,the active component of the sex pheromone of diprion pini,was investigated in this paper.The two key synthins blocks,2 methyl octan 1 yl lithium and 3,4 dimethyl γ butyrolactone,were obtained from diethyl malonate and 2,3 epoxybutane.2 Methyl octan 1 yl lithium reacted with 3,4 dimethyl γ butyrolactone to yield the ketoalcohol and then followed by Huang Minlong reduction to afford 3,7 dimethyl 2 tridecanol,acylated with acetic anhydide to give 3,7 dimethyl 2 tridecanyl acetate. 展开更多
关键词 pine sawfly sex pheromone 3 7 dimethyl 2 tridecanol 3 7 dimethyl 2 tridecanyl acetate
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Integrated Assessment of Trapping Efficiency of Colored Sticky Cards and Sex Pheromone on Liriomyza spp.and Plutella xylostella 被引量:2
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作者 陈祯 郑传伟 +3 位作者 陈旷 戈毅航 刘霞 况荣平 《Agricultural Science & Technology》 CAS 2015年第2期306-310,共5页
[Objective] To evaluate the control effect of yellow sticky cards and sex pheromone on Plutella xylostella and Liriomyza spp.,which can provide reference for large area extension of the technique.[Method] The integrat... [Objective] To evaluate the control effect of yellow sticky cards and sex pheromone on Plutella xylostella and Liriomyza spp.,which can provide reference for large area extension of the technique.[Method] The integrated assessment of trapping efficiency of colored sticky cards and sex pheromone on Liriomyza spp.and Plutella xylostella was conducted by field surveys and structured interview in Tonghai County,Yunnan Province,China.[Result] The results showed that yellow sticky cards and sex pheromone have strong power of trapping Liriomyza spp.and Plutella xylostella(3 414±720 and(219±157) head/piece,respectively);the control cost by the usage of pesticide is the highest,(10 099.5±2 752.5) yuan/hm^2,yellow sticky cards and sex pheromone takes the second place,(1 125.0±465.0) yuan/hm^2,the control cost by the usage of yellow sticky cards is the lowest,(450.0 ±186.0)yuan/hm^2.Without the usage of yellow sticky cards and sex pheromone,pesticide application times and costs are(15.0±2.7) times and(12 070.5±2 136.0) yuan/hm^2;combined with usage of yellow sticky cards and sex pheromone,pesticide application times and costs reduce by 5.7 times and 4 618.5 yuan/hm^2.The ratio of trapped beneficial insects and target pests was 1 ∶1 131,which showed that the negative effect of yellow sticky cards and sex pheromone on the non-target insects was very limited.[Conclusion] The trapping approach has become popular among all the local farmers.Looking at the above factors,the trapping technology has strong application prospect and promotion value in pest control field. 展开更多
关键词 Yellow sticky cards Sex pheromone Liriomyza spp. Plutella xylostella Integrated assessment Ecological impact Trapping efficiency Application prospect
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TASK ALLOCATION BASED ON PHEROMONE 被引量:1
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作者 王雷 唐敦兵 凌雪 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2012年第4期331-337,共7页
A pheromone-based coordination approach and a prototype implementation for task allocation are pro- posed, for dealing with the static task allocation. The approach uses an indirect coordination mechanism, called pher... A pheromone-based coordination approach and a prototype implementation for task allocation are pro- posed, for dealing with the static task allocation. The approach uses an indirect coordination mechanism, called pheromone, which comes from the collective behavior of ant colonies for food foraging. Therefore it can automat- ically find efficient manufacturing cells for processing tasks and reduce communication overhead, which exists in the contract net protocol. Experimental results confirm that the approach has excellent stability and optimization ability for task allocation problems in a static environment. 展开更多
关键词 pheromone task allocation coordination model implicit coordination
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Identification of Female Main Component Sex Pheromones of Orthaga achatina(Lepidoptera:Pyralidae) and Their Attractiveness to Moths
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作者 何月秋 谢红丽 池树友 《Agricultural Science & Technology》 CAS 2016年第4期920-922,950,共4页
[Objective] The aim is to identify the composition of female sex pheromones of Orthaga achatina and to understand the differential attractiveness of these components to Orthaga achatina moths. [Method] The pheromone g... [Objective] The aim is to identify the composition of female sex pheromones of Orthaga achatina and to understand the differential attractiveness of these components to Orthaga achatina moths. [Method] The pheromone glands of female moths were extracted and analyzed using gas chromatography coupled with mass spectroscopy(GC-MS); the chemical analysis was confirmed by electroantennogram(EAG) bioassays; a field trial was conducted to confirm the optimized blends. [Result] Z11-16:Ac could elicit the largest EAG responses in male moths at all the doses tested. EAG responses to plant volatiles and to the pheromone isomers of Z11-16:Ac were at a similar level and lower than the responses to Z11-16:Ac. In the field tests, it was demonstrated that synthetic Z11-16:Ac was significantly more attractive to male O. achatina moths, that its pheromone isomers, whether these were presented alone or in mixtures with Z11-16:Ac. [Conclusion](Z)-11-hexadecenyl acetate(Z11-16:Ac) was identified as the main component of the sex pheromone and it was demonstrated that synthetic Z11-16:Ac was significantly more attractive to male O. achatina moths. 展开更多
关键词 Orthaga achatina Sex pheromone ELECTROANTENNOGRAM Field bioassay
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Control of Tobacco Cutworm Moth Spodoptera litura Fabricius (Lepidoptera,Noctuidae) by Sex Pheromone Trapping Technology 被引量:6
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作者 杨明文 何元胜 +3 位作者 张开梅 彭桂清 王继明 许银莲 《Plant Diseases and Pests》 CAS 2011年第4期56-59,64,共5页
[Objective] The paper was to promote using synthetic sex pheromone lures to control tobacco cutworm moth(Spodoptera litura Fabricius) .[Method] Three layers of pheromone traps for S.litura were set in the field at t... [Objective] The paper was to promote using synthetic sex pheromone lures to control tobacco cutworm moth(Spodoptera litura Fabricius) .[Method] Three layers of pheromone traps for S.litura were set in the field at the density of 26 m×26 m(one trap/676 m2) to carry out field control test.[Result] The amount of egg massed reduced by 62.16% after trapping by sex pheromone under the density,and the larvae population was equivalent to those in the conventional control field with pesticides,the control effect was continuous,stable and significant.The larger the control area was,the better the effect was.[Conclusion] Using sex pheromone could effectively control S.litura and reduce pesticide usage for over 80% with economic,safe and efficient features,which should be incorporated into the technical control system of S.litura. 展开更多
关键词 Sex pheromone CONTROL Spodoptera litura Fabricius China
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棘孢木霉与30%霜霉·嘧菌酯协同防治烟草镰刀菌根腐病 被引量:2
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作者 刘畅 李小杰 +6 位作者 张梦丹 陈玉国 苗淑月 邱睿 白静科 尚颐茹 李淑君 《中国烟草科学》 CSCD 北大核心 2024年第1期48-53,共6页
为筛选防治烟草镰刀菌根腐病高效、安全的复配剂,采用菌丝生长速率法测定生防棘孢木霉Tr-0111、化学杀菌剂30%霜霉·嘧菌酯对尖孢镰刀菌(Fusarium oxysporum)的毒力及两者的相容性,同时测定两者混配对尖孢镰刀菌的毒力系数,并通过... 为筛选防治烟草镰刀菌根腐病高效、安全的复配剂,采用菌丝生长速率法测定生防棘孢木霉Tr-0111、化学杀菌剂30%霜霉·嘧菌酯对尖孢镰刀菌(Fusarium oxysporum)的毒力及两者的相容性,同时测定两者混配对尖孢镰刀菌的毒力系数,并通过盆栽试验评价其对烟草镰刀菌根腐病的防治效果。结果表明,30%霜霉·嘧菌酯和棘孢木霉Tr-0111对尖孢镰刀菌均具有较强的毒力,其EC50值分别为0.0643 mL/L、2.36×10^(2)cfu/mL,且两者相容性好。除V30%霜霉·嘧菌酯∶V_(Tr-0111)=4∶6时无增效作用,其他8个混配比例均具有增效作用,其中V_(30%霜霉·嘧菌酯)∶V_(Tr-0111)=7∶3时增效比率最高,为1.16,抑菌率为68.37%。盆栽试验结果表明,V_(30%霜霉·嘧菌酯)∶V_(Tr-0111)=5∶5时,对烟草镰刀菌根腐病的防效最好,为78.18%,其次为7∶3和1∶9,防效分别为77.27%和72.73%,均显著高于单一使用30%霜霉·嘧菌酯和棘孢木霉Tr-0111。因此,可以将0.0643 mL/L 30%霜霉·嘧菌酯和2.36×10^(2)cfu/mL棘孢木霉Tr-0111以5∶5比例混匀复配应用于烟田防治烟草镰刀菌根腐病,减少化学农药使用。 展开更多
关键词 烟草镰刀菌根腐病 尖孢镰刀菌 30%霜霉·嘧菌酯悬浮剂 棘孢木霉 复配
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5%米诺地尔泡沫剂治疗男性雄激素性脱发患者临床疗效和安全性的观察
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作者 赵敏 吴桥芳 +3 位作者 周蓝波 林雪雯 孙蔚凌 范卫新 《临床皮肤科杂志》 CAS CSCD 北大核心 2024年第9期519-522,共4页
目的:观察5%米诺地尔泡沫剂用于中国男性雄激素性脱发患者的临床疗效和安全性。方法:通过随机双盲、RO-GAINE^(R)阳性对照的临床试验,入组Hamilton-Norwood分级为Ⅲv、Ⅳ、Ⅴ级且18~49岁的男性雄激素性脱发患者开展用药随访,共24周。结... 目的:观察5%米诺地尔泡沫剂用于中国男性雄激素性脱发患者的临床疗效和安全性。方法:通过随机双盲、RO-GAINE^(R)阳性对照的临床试验,入组Hamilton-Norwood分级为Ⅲv、Ⅳ、Ⅴ级且18~49岁的男性雄激素性脱发患者开展用药随访,共24周。结果:从毛发显微图像分析、全头毛发照相及专家评分、患者满意度自评及Hamilton-Norwood分级评估,5%米诺地尔泡沫剂和ROGAINE^(R)疗效差异无统计学意义(P>0.05)。两组不良反应发生率分别为19.0%和13.0%(P>0.05)。结论:5%米诺地尔泡沫剂治疗雄激素性脱发有效、安全。 展开更多
关键词 雄激素性脱发 5%米诺地尔泡沫剂 临床疗效 安全性
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输尿管皮肤造口肉芽使用10%氯化钠注射液疗效观察1例
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作者 霍霞 张越 +2 位作者 汪霞 邵梦琪 郑瑾 《中华保健医学杂志》 2024年第5期705-705,共1页
输尿管皮肤造口的常见并发症有皮肤受损、出血、感染、萎缩、溃疡、坏死等,但发生造口周围皮肤肉芽增生者较为少见,偶见于老年膀胱肿瘤需长期留置输尿管支架的患者。常规输尿管支架管3~6个月更换1次,由于管壁长期摩擦造口皮肤,会导致输... 输尿管皮肤造口的常见并发症有皮肤受损、出血、感染、萎缩、溃疡、坏死等,但发生造口周围皮肤肉芽增生者较为少见,偶见于老年膀胱肿瘤需长期留置输尿管支架的患者。常规输尿管支架管3~6个月更换1次,由于管壁长期摩擦造口皮肤,会导致输尿管支架管与造口之间出现肉芽增生,给临床护理带来很多困难。 展开更多
关键词 输尿管皮肤造口肉芽 10%氯化钠注射液
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70%乙醇去除弯曲根管内氢氧化钙的效果评价
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作者 韩艳彦 伍甜甜 何宏 《上海口腔医学》 CAS 2024年第5期461-465,共5页
目的:应用显微CT(micro-computed tomography,Micro-CT)评价不同冲洗液联合声波荡洗对后牙弯曲根管内氢氧化钙的清除效率。方法:收集2023年10月—2024年2月在上海交通大学医学院附属第九人民医院口腔综合科门诊拔除的磨牙20颗(根管数n=4... 目的:应用显微CT(micro-computed tomography,Micro-CT)评价不同冲洗液联合声波荡洗对后牙弯曲根管内氢氧化钙的清除效率。方法:收集2023年10月—2024年2月在上海交通大学医学院附属第九人民医院口腔综合科门诊拔除的磨牙20颗(根管数n=48),按照根管治疗标准流程,使用镍钛器械完成预备后,在根管内置入氢氧化钙。1周后,根据不同冲洗方法将样本随机分入6组(n=8),即先分为次氯酸钠组、17%EDTA组和70%乙醇组3组,每组再分为使用或不使用声波荡洗2个亚组。冲洗前、后使用Micro-CT重建根管系统,使用不同颜色标记独立根管,计算根管各段氢氧化钙体积,比较各组氢氧化钙清除率。采用SPSS 19.0软件包对数据进行统计学分析。结果:6组均无法去净根管内氢氧化钙,70%乙醇组去除氢氧化钙后剩余体积显著小于其余2组(P<0.05)。在乙醇亚组内,声波震荡组与注射器组去除效率无显著差异(P>0.05)。结论:70%乙醇能增加弯曲根管内氢氧化钙去除效率。 展开更多
关键词 氢氧化钙 声波震荡 70%乙醇 EDTA 次氯酸钠 根管冲洗
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2%超分子水杨酸对UVB所致小鼠光老化损伤的修复研究
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作者 孙晓娟 杜晓婕 +2 位作者 周红梅 王瞾 曾维惠 《中国实用医药》 2024年第8期177-180,共4页
目的 探究2%超分子水杨酸对中波紫外线(UVB)所致小鼠光老化损伤的修复作用。方法 选择30只6~8周龄昆明雌鼠,随机分为空白对照组、UVB组、UVB+2%超分子水杨酸组,各10只。空白对照组小鼠正常日光照射饲养, UVB组、UVB+2%超分子水杨酸组隔... 目的 探究2%超分子水杨酸对中波紫外线(UVB)所致小鼠光老化损伤的修复作用。方法 选择30只6~8周龄昆明雌鼠,随机分为空白对照组、UVB组、UVB+2%超分子水杨酸组,各10只。空白对照组小鼠正常日光照射饲养, UVB组、UVB+2%超分子水杨酸组隔日用UVB照射1次,辐照12周,其中UVB+2%超分子水杨酸组小鼠在UVB照射后涂抹1次2%超分子水杨酸,非照射日每日涂抹1次;最后1次辐照结束后48 h观察三组小鼠皮肤组织形态变化情况,应用苏木精-伊红(HE)染色观察小鼠背部皮肤显微结构改变情况,测定表皮、真皮厚度,应用Masson染色观察真皮胶原纤维排列情况,测定胶原纤维含量,用免疫组化染色观察皮肤组织p21、p53表达情况。比较三组小鼠背部皮肤外形情况、皮肤显微结构改变情况及皮肤组织p21、p53阳性表达情况。结果 与空白对照组相比,UVB组小鼠皮肤粗糙,有深皱纹毛孔扩大,缺乏弹性,皮肤呈褐黄色斑,皮革样外观,镜下见毛细血管扩张,结痂,为典型光老化特征;UVB+2%超分子水杨酸组皮肤外观有隐约褐色斑,镜下见皮肤有散在、不规则褐色斑片,光老化症状较轻。三组背部皮肤损伤程度比较有明显差异性(P<0.05);UVB组背部皮肤损伤程度明显大于空白对照组和UVB+2%超分子水杨酸组,有明显差异性(P<0.05);空白对照组与UVB+2%超分子水杨酸组皮损程度比较也有明显差异性(P<0.05)。空白对照组表皮厚度、真皮厚度、真皮胶原纤维含量分别为(18.55±1.80)μm、(350.08±35.16)μm、(0.46±0.05)OD, UVB组分别为(79.68±21.37)μm、(611.62±16.37)μm、(0.15±0.30)OD, UVB+2%超分子水杨酸组分别为(60.99±11.49)μm、(467.94±20.71)μm、(0.32±0.03)OD。三组表皮厚度、真皮厚度及真皮胶原纤维含量比较有明显差异性(P<0.05);UVB+2%超分子水杨酸组和UVB组表皮厚度、真皮厚度明显多于空白对照组,真皮胶原纤维含量显著少于空白对照组,有明显差异性(P<0.05);UVB+2%超分子水杨酸组表皮厚度、真皮厚度明显少于UVB组,真皮胶原纤维含量多于UVB组,有明显差异性(P<0.05)。免疫组化显示空白对照组未见有p21、p53阳性表达。UVB+2%超分子水杨酸组皮肤组织p21、p53阳性表达率分别为30.00%、10.00%,低于UVB组的80.00%、60.00%,有明显差异性(P<0.05)。结论 2%超分子水杨酸对UVB所致小鼠光老化皮肤有修护保护作用,其机制与抑制凋亡相关基因p21、p53表达有关。 展开更多
关键词 皮肤光老化 2%超分子水杨酸 中波紫外线
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A larval specific OBP able to bind the major female sex pheromone component in Spodoptera exigua(Hübner) 被引量:6
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作者 JIN Rong LIU Nai-yong +1 位作者 LIU Yan DONG Shuang-lin 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2015年第7期1356-1366,共11页
Odorant binding proteins (OBPs) in insects are postulated to solubilize and transport the hydrophobic odorants across the hydrophilic antennal lymph to the olfactory receptors (ORs) located on the dendrite membran... Odorant binding proteins (OBPs) in insects are postulated to solubilize and transport the hydrophobic odorants across the hydrophilic antennal lymph to the olfactory receptors (ORs) located on the dendrite membrane of the sensory neurons. OBPs in adult insects have been intensively reported, but those in larvae are rarely addressed. In our study, a full-length OBP cDNA, namely SexiOBP13, was cloned by RT-PCR and RACE strategy from the heads of Spodoptera exigua larvae. The quantitative real-time PCR (qPCR) measurement indicated that SexiOBP13 was highly expressed in larval head, but very low in other parts of larva and was not detected in any tissues of adult. The binding affinities of SexiOBP13 to plant volatiles and female sex pheromone components were measured by competitive binding assays. Interestingly, SexiOBP13 displayed a high binding affinity (Ki=3.82 IJmol L-1) to Z9,E12-14:Ac, the major sex pheromone component of S. exigua, while low affinities to the tested host plant volatiles (Ki〉27 μmol L-l). The behavioral tests further confirmed that Z9,E12-14:Ac was indeed active to elicit the behavioral activity of the third instar larvae of S. exigua. Taken together, our results suggest that SexiOBP13 may play a role in reception of female sex pheromone in S. exigua larvae. The ecological significance of the larvae preference to the adult female sex pheromone was discussed. 展开更多
关键词 odorant binding protein female sex pheromone larval specificity binding affinity behavioral response
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脂肪乳氨基酸(17)葡萄糖(11%)注射液稳定性研究
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作者 杨培培 张丽雯 +1 位作者 程钢 黄赵刚 《中国药业》 CAS 2024年第2期60-62,共3页
目的为临床合理使用脂肪乳氨基酸(17)葡萄糖(11%)注射液(商品名卡文)提供依据。方法将卡文3个腔室液体混匀(样品S1);再分别添加电解质(氯化钾和氯化钠,样品S2),维生素(水溶性维生素及脂溶性维生素,样品S3),多种微量元素(样品S4),以及上... 目的为临床合理使用脂肪乳氨基酸(17)葡萄糖(11%)注射液(商品名卡文)提供依据。方法将卡文3个腔室液体混匀(样品S1);再分别添加电解质(氯化钾和氯化钠,样品S2),维生素(水溶性维生素及脂溶性维生素,样品S3),多种微量元素(样品S4),以及上述所有成分(样品S5)。分别于室温下放置0,4,8,12 h时测定混合液的pH、渗透压、不溶性微粒数,并考察乳剂粒径分布情况。结果样品S1-S5室温下放置12 h内外观无明显变化,pH为5.51~5.59;渗透压,S2为934~972 mOsmol/kg,S3为816~831 mOsmol/kg,S4为810~835 mOsmol/kg,S5为934~957 mOsmol/kg;不溶性微粒变化不明显;乳剂粒径分布集中在1~10 nm。结论在卡文中添加规定限度内的电解质、维生素和多种微量元素,对其pH、不溶性微粒、乳剂粒径等影响较小,但电解质对渗透压影响较大,应予以重视。 展开更多
关键词 脂肪乳氨基酸(17)葡萄糖(11%)注射液 电解质 维生素 配伍 稳定性
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A Facile Synthetic Method for (3Z,6Z,9S,10R)-9,10-Epoxy-3,6-heneicosadiene,Sex Pheromone Component of Hyphantria Cunea (Drug) 被引量:4
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作者 Chao CHE, Zhong Ning ZHANG StateKey Laboratory IntegratedManagementofInsectsandRodents,Institute of Zoology, Chinese Academy of Sciences, Beijing 100080 Graduate School of the Chinese Academy of Sciences, Beijing 100039 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第4期468-470,共3页
Total synthesis of (3Z, 6Z, 9S, 10R)-9, 10-epoxy-3, 6-heneicosadiene, sex pheromone component of Hyphantria cunea (Drug), was achieved using Sharpless AE kinetic resolution and alkylative epoxide rearrangement as ke... Total synthesis of (3Z, 6Z, 9S, 10R)-9, 10-epoxy-3, 6-heneicosadiene, sex pheromone component of Hyphantria cunea (Drug), was achieved using Sharpless AE kinetic resolution and alkylative epoxide rearrangement as key steps. 展开更多
关键词 Sex pheromone Hyphantria cunea (Drug) Sharpless kinetic resolution asymmeric synthesis.
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Progress on Sex Pheromone Synthesis of Asian Corn Borer, Ostrinia furnacalis (Guenee)
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作者 刘伟 杨鹏 +3 位作者 蒋龙 杨国庆 张大伟 潘洪玉 《Agricultural Science & Technology》 CAS 2013年第12期1842-1846,1880,共6页
The progress on the components identification, synthesis methods (syn- thetic strategy of carbon chain increasing and synthetic strategy of carbon chain de- creasing) of Asian corn borer (Ostrinia fumacalis (Guene... The progress on the components identification, synthesis methods (syn- thetic strategy of carbon chain increasing and synthetic strategy of carbon chain de- creasing) of Asian corn borer (Ostrinia fumacalis (Guenee)) sex pheromone was reviewed, which will provide a reference for the control of Asian corn borer. 展开更多
关键词 Asian corn borer Sex pheromone STRUCTURE SYNTHESIS
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不同pH的5%葡萄糖注射液与注射用两性霉素B配伍的稳定性研究
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作者 何旭 梁丽媛 赵强 《临床医学研究与实践》 2024年第22期18-22,共5页
目的通过不同pH的5%葡萄糖注射液与注射用两性霉素B配伍,以探讨5%葡萄糖注射液的pH变化对注射用两性霉素B的影响。方法分别用盐酸(HCl)和氢氧化钠(NaOH)调节5%葡萄糖溶液至pH=3.2、3.4、3.6、3.8、4.0、4.2、4.4、4.6、4.8、5.0,并分别... 目的通过不同pH的5%葡萄糖注射液与注射用两性霉素B配伍,以探讨5%葡萄糖注射液的pH变化对注射用两性霉素B的影响。方法分别用盐酸(HCl)和氢氧化钠(NaOH)调节5%葡萄糖溶液至pH=3.2、3.4、3.6、3.8、4.0、4.2、4.4、4.6、4.8、5.0,并分别与注射用两性霉素B配伍,在避光条件下室温放置0、1、2、3、4、5、6、7 h。以高效液相色谱法测定两性霉素B的含量变化情况,同时考察供试液的pH变化情况;通过加速实验增加输液体系中两性霉素B降解产物量,并最终通过质谱分析来确定其化学结构。结果pH≤3.4的5%葡萄糖注射液与注射用两性霉素B配伍后会产生明显可见的浑浊沉淀;5%葡萄糖注射液pH≤4时,随着放置时间的延长,注射用两性霉素B相对含量下降,降解量可达10%,而降解到的杂质结构为甲氧基取代杂质。结论为了保证注射用两性霉素B的输液安全,在溶媒pH符合要求的前提下,减少输液时间可以有效降低两性霉素B的降解。 展开更多
关键词 注射用两性霉素B 5%葡萄糖注射液 稳定性
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Using an Electronic Nose to Rapidly Assess Grandlure Content in Boll Weevil Pheromone Lures 被引量:2
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作者 Charles P.-C. Suh Ningye Ding Yubin Lan 《Journal of Bionic Engineering》 SCIE EI CSCD 2011年第4期449-454,共6页
Samples of pheromone lures used in boll weevil, Anthonomus grandis (Boheman), eradication programs are routinely analyzed by Gas Chromatography (GC) to ensure lures are adequately dosed with grandlure, the synthet... Samples of pheromone lures used in boll weevil, Anthonomus grandis (Boheman), eradication programs are routinely analyzed by Gas Chromatography (GC) to ensure lures are adequately dosed with grandlure, the synthetic aggregation phero- mone produced by male weevils. However, preparation of GC samples is tedious, time consuming, and requires a moderate level of experience. We examined the use of a commercially-available electronic nose (e-nose) for rapidly assessing the grandlure contents of lures. The e-nose was trained to recognize headspace collections of grandlure emitted from new lures and after lures were aged under field conditions for 4 d, 7 d, 10 d, and 14 d. Based on cross-validation of the training set, the e-nose was 82% accurate in discriminating among the different age classes of lures. Upon sampling headspace collections of pheromone from a different set of field-aged lures, the e-nose was 〈50% accurate in discriminating 4 d, 7 d, and 10 d aged lures from the other age classes of lures. However, the e-nose identified new and 14 d aged lure samples with 100% accuracy. In light of these findings, e-nose technology shows considerable promise as an alternative approach for rapidly assessing the initial grandlure contents of lures used in boll weevil eradication programs. 展开更多
关键词 electronic nose Cyranose 320 boll weevil grandlure pheromone lure
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0.01%28-高芸苔素内酯·吲哚丁酸对寒地水稻生长及产量的影响
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作者 黄成亮 《北方水稻》 CAS 2024年第1期30-34,42,共6页
为明确0.01%28-高芸苔素内酯·吲哚丁酸对寒地水稻生长调节作用,采用随机区组试验设计,研究不同施药量对寒地水稻生长及产量的影响。结果表明,于分蘖期施用0.01%28-高芸苔素内酯·吲哚丁酸颗粒剂,能明显促进水稻分蘖,缩短始穗... 为明确0.01%28-高芸苔素内酯·吲哚丁酸对寒地水稻生长调节作用,采用随机区组试验设计,研究不同施药量对寒地水稻生长及产量的影响。结果表明,于分蘖期施用0.01%28-高芸苔素内酯·吲哚丁酸颗粒剂,能明显促进水稻分蘖,缩短始穗期至齐穗期天数,促进干物质积累,增强抗倒伏能力,提高水稻产量,对水稻生长安全。药剂施用量为22.5 kg/hm^(2)时,水稻穗粒数、结实率、千粒重最大,产量最高,是最佳施用量。 展开更多
关键词 0.01%28-高芸苔素内酯·吲哚丁酸 寒地水稻 生长 产量
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