Comparative biochemistry and physiology. C: Comparative pharmacology最新文献_第2页

Comparative effects of environmental conditions, in eutrophic polluted and oligotrophic non-polluted areas of the saronikos gulf (Greece), on the physiology of the copepod Acartia clausi 希腊萨罗尼科斯湾富营养化污染区和贫营养化未污染区环境条件对桡足动物克劳斯阿卡蒂亚(Acartia clausi)生理的比较影响

Comparative biochemistry and physiology. C: Comparative pharmacology Pub Date : 1993-07-01 DOI: 10.1016/0742-8413(93)90080-5

P. Kerambrun , M. Thessalou-Legaki , G. Verriopoulos

{"title":"Comparative effects of environmental conditions, in eutrophic polluted and oligotrophic non-polluted areas of the saronikos gulf (Greece), on the physiology of the copepod Acartia clausi","authors":"P. Kerambrun , M. Thessalou-Legaki , G. Verriopoulos","doi":"10.1016/0742-8413(93)90080-5","DOIUrl":"10.1016/0742-8413(93)90080-5","url":null,"abstract":"<div>1. Digestive enzyme activity and the oxygen consumption rate of Acartia clausi from the polluted eutrophic Elefsis Bay and the non-polluted oligotrophic Vouliagmeni-Fleves area were compared.2. Out of 13 hydrolases whose activity was revealed, 10 had a higher activity in the Elefsis population than in the Vouliagmeni-Fleves one. Only amylase, alkaline phosphatase and esterase lipase had a higher activity in the Vouliagmeni-Fleves population.3. The high activity of amylase in Vouliagmeni-Fleves population seems to indicate that phytoplankton constitutes the most important part of A. clausi's food.4. Respiration rate was significantly lower in Elefsis population, irrespective of season.5. A significant seasonal variation was observed which was greater in the Vouliagmeni-Fleves population, with a 50% decrease in the respiration rate between spring and summer.6. The obtained results agree with previous literature data and show the physiological characteristics of A. clausi of Elefsis Bay, allowing it to thrive in polluted eutrophic waters.</div>","PeriodicalId":72650,"journal":{"name":"Comparative biochemistry and physiology. C: Comparative pharmacology","volume":"105 3","pages":"Pages 415-420"},"PeriodicalIF":0.0,"publicationDate":"1993-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0742-8413(93)90080-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54006363","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: 6

Increased 5-aminolevulinic acid (ALA) in heavy metal exposed bivalve molluscs, Cerastoderma edule: An effect due to inhibition of porphobilinogen synthase? 重金属暴露的双壳类软体动物中5-氨基乙酰丙酸(ALA)的增加:由于抑制卟胆色素原合成酶的影响?

Comparative biochemistry and physiology. C: Comparative pharmacology Pub Date : 1993-07-01 DOI: 10.1016/0742-8413(93)90091-X

V. Brock , A. Brock

引用次数: 3

Effect of diesel fuel hydrocarbons on embryogenesis and 45Ca2+ uptake by unfertilized eggs of sea urchin, Strongylocentrotus intermedius 柴油烃类对海胆胚胎发生及未受精卵对45Ca2+吸收的影响

Comparative biochemistry and physiology. C: Comparative pharmacology Pub Date : 1993-07-01 DOI: 10.1016/0742-8413(93)90099-7

P.M. Zhadan , M.A. Vaschenko

{"title":"Effect of diesel fuel hydrocarbons on embryogenesis and 45Ca2+ uptake by unfertilized eggs of sea urchin, Strongylocentrotus intermedius","authors":"P.M. Zhadan , M.A. Vaschenko","doi":"10.1016/0742-8413(93)90099-7","DOIUrl":"10.1016/0742-8413(93)90099-7","url":null,"abstract":"<div>1. The quality of unfertilized eggs of the sea urchin Strongylocentrotus intermedius, kept for a long time (50 days) in a sea water containing water soluble hydrocarbons of diesel fuel in sublethal concentrations (0.3–0.04 mg/l), was assessed through observation of embryogenesis and the intensity of 45Ca2+ uptake.2. It has been shown that such treatment led to delay and asynchronism of embryonal and larval development and to appearance of a greater number of abnormalities compared to the control.3. Unfertilized eggs of sea urchins exposed to the hydrocarbons in sublethal concentrations accumu- lated 30–60% more 45Ca2+ than those of control animals. Short-term incubation (2 hr) of eggs at the same hydrocarbon concentrations did not change 45Ca2+ uptake by unfertilized eggs of control animals.4. The increase of hydrocarbon concentration up to 1 mg/l (i.e. to a concentration causing disturbance of embryogenesis in acute experiments) in short-term experiments caused a small elevation in the 45Ca2+ uptake by unfertilized eggs of control animals (30% more than in untreated eggs).5. Ionomycin-induced (concentration 10−8−10−9) increase of 45Ca2+ uptake by unfertilized eggs (50–100% more than the untreated eggs) caused the same disturbance of embryogenesis as under hydrocarbon exposure.6. It is suggested that one of the mechanisms inducing the deleterious effect of hydrocarbons in sea urchin gametes is related to the increase of membrane permeability to calcium ions.</div>","PeriodicalId":72650,"journal":{"name":"Comparative biochemistry and physiology. C: Comparative pharmacology","volume":"105 3","pages":"Pages 543-548"},"PeriodicalIF":0.0,"publicationDate":"1993-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0742-8413(93)90099-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54006571","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: 6

In vivo adaptative regulation of muscarinic receptors and muscarinic stimulation-induced Ca2+ mobilization during short-term heat exposure in rat parotid glands 大鼠腮腺短期热暴露期间毒蕈碱受体和毒蕈碱刺激诱导的Ca2+动员的体内适应性调节

Comparative biochemistry and physiology. C: Comparative pharmacology Pub Date : 1993-07-01 DOI: 10.1016/0742-8413(93)90085-Y

H. Fujinami , K. Komabayashi , T. Izawa , K. Suda , M. Tsuboi

引用次数: 3

Cholera toxin: Radio-iodination and uptake by the intestine of suckling rats 霍乱毒素:放射性碘化及其在哺乳大鼠肠道的吸收

Comparative biochemistry and physiology. C: Comparative pharmacology Pub Date : 1993-07-01 DOI: 10.1016/0742-8413(93)90077-X

Aye-Kyaw, Khin Thandar Win, Lei Lei Oo, Tin Oo

引用次数: 0

Influence of formamidines on batrachotoxin in a 20α-benzoate binding to neural membranes from pyrethroid susceptible and resistant tobacco budworm moths Heliothis virescens 甲脒对拟除虫菊酯类杀虫剂敏感和抗性烟草芽蛾神经膜上20α-苯甲酸酯中细菌毒素的影响

Comparative biochemistry and physiology. C: Comparative pharmacology Pub Date : 1993-07-01 DOI: 10.1016/0742-8413(93)90084-X

C.J. Church, S.F. Abd-Elghafar, C.O. Knowles

{"title":"Influence of formamidines on batrachotoxin in a 20α-benzoate binding to neural membranes from pyrethroid susceptible and resistant tobacco budworm moths Heliothis virescens","authors":"C.J. Church, S.F. Abd-Elghafar, C.O. Knowles","doi":"10.1016/0742-8413(93)90084-X","DOIUrl":"10.1016/0742-8413(93)90084-X","url":null,"abstract":"<div>1. Amitraz stimulated [3H]batrachotoxin in A 20-α-benzoate ([3H]BTX-B) binding to neural membranes from pyrethroid susceptible (S) and resistant (R) tobacco budworm moths, but N′-(2,4-xylyl)-N-methylformamidine (SN 49844) stimulated binding only with S moths.2. Chlordimeform stimulated [3H]BTX-B binding only with R moths, and N-(4-chloro-o-tolyl)-N-methylformamidine (demethylchlordimeform) yielded no significant stimulation with either strain.3. A mixture of amitraz and deltamethrin, a pyrethroid that previously had been shown to enhance [3H]BTX-B binding with tobacco budworm moths, also gave significant stimulation of radioligand binding with S moths.4. When membranes were prepared from S moths at various intervals following topical application of amitraz, deltamethrin, or a mixture of amitraz and deltamethrin, biphasic stimulation of [3H]BTX-B binding was observed, with maximum enhancement occurring at 2 and 6 hr.5. These results provided a basis for suggesting that a formamidine binding site is located on or closely associated with the sodium channel protein.6. Whether this site is the same as the pyrethroid/DDT binding domain remains to be demonstrated; however, similarities in responses elicited by amitraz and deltamethrin alone and in combination indicate that some relationship may exist.</div>","PeriodicalId":72650,"journal":{"name":"Comparative biochemistry and physiology. C: Comparative pharmacology","volume":"105 3","pages":"Pages 443-449"},"PeriodicalIF":0.0,"publicationDate":"1993-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0742-8413(93)90084-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54006424","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: 2

The influence of gradual water acidification on the oxygen consumption pattern of fish 水体逐渐酸化对鱼类耗氧量模式的影响

Comparative biochemistry and physiology. C: Comparative pharmacology Pub Date : 1993-07-01 DOI: 10.1016/0742-8413(93)90081-U

Peter L.M. Van Dijk , Guido E.E.J.M.Van Den Thillart , Sjoerd E. Wendelaar Bonga

引用次数: 8

Effects of several peptides with pro-arg-leu-NH2 C-terminal sequence on invertebrate muscles 具有前精氨酸-亮氨酸- nh2 c端序列的几种肽对无脊椎动物肌肉的影响

Comparative biochemistry and physiology. C: Comparative pharmacology Pub Date : 1993-07-01 DOI: 10.1016/0742-8413(93)90088-3

Y. Fujisawa , T. Ikeda , T. Takahashi , Y. Furukawa , Y. Muneoka , S. Matsumoto , H. kuniyoshi , A. suzuki

{"title":"Effects of several peptides with pro-arg-leu-NH2 C-terminal sequence on invertebrate muscles","authors":"Y. Fujisawa , T. Ikeda , T. Takahashi , Y. Furukawa , Y. Muneoka , S. Matsumoto , H. kuniyoshi , A. suzuki","doi":"10.1016/0742-8413(93)90088-3","DOIUrl":"10.1016/0742-8413(93)90088-3","url":null,"abstract":"<div>1. Effects of the following PRLamide peptides on some invertebrate muscles were examined: APNFLAYPRLamide (a peptide of the bivalve mollusc Mytilus), AAPLPRLamide (a peptide of the echiuroid Urechis), FTPRLamide (a fragment of a peptide of the insect Pseudaletia), YFSPRLamide (a fragment of a peptide of the insect Heliothis) and pQTSFTPRLamide (a peptide of the insect Leucophaea).2. In the ABRM of Mytilus, the Mytilus and Urechis peptides potentiated phasic contraction by repetitive electrical stimulation. The former was more potent than the latter. The three insect-origin peptides did not show any potentiating effect but showed a weak antagonistic action on the potentiating effect of the Mytilus peptide. Except the Mytilus peptide, the PRLamide peptides showed little or no relaxing effect on catch tension, though they accelerated catch-relaxing response to repetitive electrical stimulation.3. In the inner circular body-wall of muscle of Urechis, the PRLamide peptides showed a potentiating effect on twitch contraction. The Urechis peptide was most potent. In the esophagus of the annelid Perinereis, the PRLamide peptides showed a contractile effect. The Urechis peptide was also most potent.4. In the crop of the cricket Gryllus, the insect-origin peptides markedly potentiated spontaneous rhythmic contractions. The Mytilus peptide showed a weak potentiating effect, but the Urechis peptide showed little or no effect.</div>","PeriodicalId":72650,"journal":{"name":"Comparative biochemistry and physiology. C: Comparative pharmacology","volume":"105 3","pages":"Pages 471-477"},"PeriodicalIF":0.0,"publicationDate":"1993-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0742-8413(93)90088-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18901043","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: 1

Caffeine and ryanodine differentially modify a calcium-dependent component of soma action potentials in identified molluscan (Lymnaea stagnalis) neurones In situ 咖啡因和ryanodine在已鉴定的软体动物(lynaea滞海)神经元中原位改变躯体动作电位的钙依赖性成分

Comparative biochemistry and physiology. C: Comparative pharmacology Pub Date : 1993-07-01 DOI: 10.1016/0742-8413(93)90072-S

I.A. Ahmed , P.M. Hopkins , W. Winlow

{"title":"Caffeine and ryanodine differentially modify a calcium-dependent component of soma action potentials in identified molluscan (Lymnaea stagnalis) neurones In situ","authors":"I.A. Ahmed , P.M. Hopkins , W. Winlow","doi":"10.1016/0742-8413(93)90072-S","DOIUrl":"10.1016/0742-8413(93)90072-S","url":null,"abstract":"<div>1. The main objectives of the present study were to investigate the effects of either caffeine or ryanodine on action potential shape in four identified neurones of Lymnaea stagnalis (L) in situ.2. The action potential width at half-amplitude (half-width, HW) is a Ca2+ -dependent phenomenon and hence it was used here as a measure of spike broadening or narrowing. Spike data were analysed using a computer programme and appropriate statistical tests were performed.3. Intracellular recordings were made under control conditions to establish the frequency/HW relationship for each cell type. Recordings were also made from each cell after perfusion with two concentrations of each drug and their effects on the frequency/HW relationship were studied.4. Caffeine produced a significant increase in HW in three out of four studied neurones, whilst ryanodine produced a significant response in only one neurone and inconsistent results in the remainder. Therefore, both drugs were found to produce cell specific responses.5. The data presented here are consistent with previous studies which demonstrate that both caffeine and ryanodine act as mobilizing agents for intracellular calcium from internal storage sites, although by different mechanisms.</div>","PeriodicalId":72650,"journal":{"name":"Comparative biochemistry and physiology. C: Comparative pharmacology","volume":"105 3","pages":"Pages 363-372"},"PeriodicalIF":0.0,"publicationDate":"1993-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0742-8413(93)90072-S","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54006267","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: 5

Analysis of catecholamines in turbellarians of Lake Baikal 贝加尔湖湍流虫中儿茶酚胺的分析

Comparative biochemistry and physiology. C: Comparative pharmacology Pub Date : 1993-07-01 DOI: 10.1016/0742-8413(93)90093-Z

Krister Eriksson , Maria Reuter , Oleg Timoshkin

引用次数: 8