Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry)最新文献_第4页

Temperature sensation in cold acclimation of nematode Caenorhabditis elegans is affected by environmental oxygen concentration 秀丽隐杆线虫冷驯化过程中的温度感觉受环境氧浓度的影响

Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry) Pub Date : 2020-07-31 DOI: 10.3330/hikakuseiriseika.37.103

M. Okahata, Akane Ohta, A. Kuhara

{"title":"Temperature sensation in cold acclimation of nematode Caenorhabditis elegans is affected by environmental oxygen concentration","authors":"M. Okahata, Akane Ohta, A. Kuhara","doi":"10.3330/hikakuseiriseika.37.103","DOIUrl":"https://doi.org/10.3330/hikakuseiriseika.37.103","url":null,"abstract":"Temperature Humans receive multiple environmental stimuli by sensory neurons and transmit their information to brain. The nervous system in brain integrates and discriminates their information, and sends appropriate instructions to various tissues in the body. However, molecular physiological mechanisms un-derlying integration and discrimination of multiple signals in nervous system remain poorly understood. Here, we review that cold acclimation in C. elegans can be useful experimental model for studying the neuronal circuit integrating two different environmental factors, temperature and oxygen. C. elegans can appropriately adapt to environmental change by integrating and distinguishing multiple sensory information in neuronal circuit consisting of only 302 neurons. Recently, we have found KQT-type potassium channel (KQT-2) is involved in cold acclimation. Interestingly, kqt-2 mutant showed strong-er abnormal cold acclimation when they cultivated at higher oxygen concentration. The temperature-sensing neuron ex-pressing KQT-2 potassium channel has connection from an oxygen-sensing neuron. Ca 2+ imaging analysis suggested that the neuronal activity of the temperature-sensing neuron is modulated by oxygen signaling. We have proposed that molecular mechanisms and the simple neural circuit integrating two different sensory information.","PeriodicalId":377956,"journal":{"name":"Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry)","volume":"381 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132864861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of neural sex-determination system in insects: insights from basal direct-developing insects 昆虫神经性别决定系统的进化:来自基生直接发育昆虫的见解

Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry) Pub Date : 2020-07-31 DOI: 10.3330/hikakuseiriseika.37.130

Takayuki Watanabe

{"title":"Evolution of neural sex-determination system in insects: insights from basal direct-developing insects","authors":"Takayuki Watanabe","doi":"10.3330/hikakuseiriseika.37.130","DOIUrl":"https://doi.org/10.3330/hikakuseiriseika.37.130","url":null,"abstract":"130 求愛行動や交尾相手をめぐる闘争行動などの性特異的行動は,脳・神経系に存在する性的二型神経回路により制御される。昆虫では,モデル生物であるキイロショウジョウバエを材料とした分子遺伝学研究により,行動の性的二型性を規定する脳・神経回路の性差を生み出す分子・細胞基盤が詳細に明らかにされてきた。ショウジョウバエでは, 性特異的なスプライシング因子であるtransformer 遺伝子の下流でfruitless 遺伝子やdoublesex 遺伝子などの転写因子遺伝子から性特異的な遺伝子産物が生じ,これらを発現する神経細胞が形態的・機能的な性的二型を獲得する。ではtransformer 遺伝子やfruitless 遺伝子,doublesex 遺伝子を中心とした脳・神経回路の性決定メカニズムは,昆虫の様々な系統で種を超えた共通のメカニズムなのであろうか?本総説では,ショウジョウバエにおける脳・神経回路の性決定メカニズムに関する研究を振り返りながら,近年報告された非ショウジョウバエ昆虫,特に原始的な不完全変態昆虫におけるfruitless 遺伝子・doublesex 遺伝子の研究を紹介し,昆虫脳・神経回路の性分化機構の進化について分子進化学的な視点から解説する。","PeriodicalId":377956,"journal":{"name":"Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127626481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Giant neuron is a key player for fast escape 巨型神经元是快速逃脱的关键

Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry) Pub Date : 2020-07-31 DOI: 10.3330/hikakuseiriseika.37.111

Takashi Shimazaki, Y. Oda

{"title":"Giant neuron is a key player for fast escape","authors":"Takashi Shimazaki, Y. Oda","doi":"10.3330/hikakuseiriseika.37.111","DOIUrl":"https://doi.org/10.3330/hikakuseiriseika.37.111","url":null,"abstract":"Escape behaviors are crucial to survive predator encounters or aversive stimuli. The neural circuits mediating escape re-actions of different animals have a common framework to trigger extremely fast and robust movement with minimum delay. Thus, the escape networks possibly represent function-al architectures to perform most efficient sensory-motor pro-cessing in the brain. Here we review escape behaviors and underlying circuits of squid, crayfish, fruit fly, zebrafish and rodent. The escape circuits of these animals involve giant neurons, or also called as giant fibers or giant axons, to initiate fast escape. Without activation of the giant neurons, the animals can do escape or similar behaviors typically in response to less precious threads, but they are delayed and much slow-er than fast escape initiated by the giant neurons. Therefore, fast and slow escape circuits are built, probably in parallel, in the brain and the giant neurons play a key role to induce fast escape to avoid imminent danger. We also discuss why the giant neurons are built in the fast escape circuits by introduc-ing their advantage to collect sensory information and to send ballistic motor output as fast as possible.","PeriodicalId":377956,"journal":{"name":"Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126854914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parallel negative feedback circuits in a higher olfactory center of the American cockroach 美洲蟑螂高级嗅觉中心的平行负反馈回路

Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry) Pub Date : 2020-07-31 DOI: 10.3330/hikakuseiriseika.37.119

Naomi Takahashi

引用次数: 0

Neural mechanisms for developing species-universal and individually unique song of zebra finch. 斑胸草雀种类通用和个体独特鸣声形成的神经机制。

Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry) Pub Date : 2020-07-31 DOI: 10.3330/hikakuseiriseika.37.94

M. Araki

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Abstracts from the 41st Annual Meeting of the Japanese Society for Comparative Physiology and Biochemistry 日本比较生理与生物化学学会第41届年会摘要

Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry) Pub Date : 2020-04-01 DOI: 10.3330/hikakuseiriseika.37.3

引用次数: 0

Dynamic neural computation during movement 运动过程中的动态神经计算

Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry) Pub Date : 2020-04-01 DOI: 10.3330/hikakuseiriseika.37.62

Terufumi Fujiwara

引用次数: 0

Compensational Recovery of Escape Behavior in Unilaterally Cercus-Ablated Crickets (Gryllus bimacu latus). 单侧阉割蟋蟀逃跑行为的代偿性恢复。

Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry) Pub Date : 2020-04-01 DOI: 10.3330/hikakuseiriseika.37.53

H. Takuwa, M. Kanou

引用次数: 0

Physiological Relevance of Spectral Property of Visual Opsins in Jumping Spiders 跳蜘蛛视蛋白光谱特性的生理相关性

Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry) Pub Date : 2019-12-20 DOI: 10.3330/hikakuseiriseika.36.175

T. Nagata, A. Terakita

引用次数: 0

Circadian rhythms and clock in the colony of social insects. 群居昆虫群体的昼夜节律和时钟。

Hikaku Seiri Seikagaku(comparative Physiology and Biochemistry) Pub Date : 2019-12-20 DOI: 10.3330/hikakuseiriseika.36.155

T. Fuchikawa

引用次数: 0