Zeitschrift fur Naturforschung. Section C, Biosciences最新文献_第9页

Neuroanatomical evidence for electroreception in lampreys. 七鳃鳗电感受的神经解剖学证据。

Zeitschrift fur Naturforschung. Section C, Biosciences Pub Date : 1984-07-01 DOI: 10.1515/znc-1984-7-830

B Fritzsch, M D Crapon de Caprona, K Wächtler, K H Körtje

引用次数: 24

Studies on the possible mechanism of inactivation of phenylalanine hydroxylase by destructive oxygen species. 破坏性氧对苯丙氨酸羟化酶失活可能机制的研究。

Zeitschrift fur Naturforschung. Section C, Biosciences Pub Date : 1984-07-01 DOI: 10.1515/znc-1984-7-809

R M Fink, E F Elstner

引用次数: 5

Comparison of different methods for the determination of phenylalanine hydroxylase activity in rat liver and Euglena gracilis. 不同方法测定大鼠肝脏和细叶草苯丙氨酸羟化酶活性的比较。

Zeitschrift fur Naturforschung. Section C, Biosciences Pub Date : 1984-07-01 DOI: 10.1515/znc-1984-7-808

R M Fink, E F Elstner

引用次数: 1

In vivo metabolism of [4-13C]phenacetin in an isolated perfused rat liver measured by continuous flow 13C NMR spectroscopy. [4-13C]非那西丁在离体灌注大鼠肝脏中的体内代谢用连续流式13C NMR测定。

Zeitschrift fur Naturforschung. Section C, Biosciences Pub Date : 1984-07-01 DOI: 10.1515/znc-1984-7-831

K Albert, G Kruppa, K P Zeller, E Bayer, F Hartmann

引用次数: 7

Effects of vitamin A in the presence of vitamins D3, E, K1 on red cell membrane structure. 维生素D3、E、K1存在时维生素A对红细胞膜结构的影响。

Zeitschrift fur Naturforschung. Section C, Biosciences Pub Date : 1984-07-01 DOI: 10.1515/znc-1984-7-813

R Cicero, D Callari, L Guidoni, V Viti, M Scalia, I Maida, A Billitteri, G Sichel

引用次数: 0

Polycation-cell surface interactions and plasma membrane compartments in mammals. Interference of oligocation with polycationic condensation. 哺乳动物的多阳离子-细胞表面相互作用和质膜区室。寡位与聚阳离子缩合的干扰。

Zeitschrift fur Naturforschung. Section C, Biosciences Pub Date : 1984-07-01 DOI: 10.1515/znc-1984-7-816

S Antohi, V Brumfeld

{"title":"Polycation-cell surface interactions and plasma membrane compartments in mammals. Interference of oligocation with polycationic condensation.","authors":"S Antohi, V Brumfeld","doi":"10.1515/znc-1984-7-816","DOIUrl":"https://doi.org/10.1515/znc-1984-7-816","url":null,"abstract":"At lower concentrations, polyarginine, polylysine, protamine, histones H1, H2A, H2B and H3 cause lysis of human erythrocytes, whereas at higher concentrations inner histones are not hemolytic but induce only surface condensation and alterations in the cell-shape. Antibody coated erythrocytes treated with polyarginine result in ghost-like spheres having globular bodies 1 micron in diameter on the surface. Human fibroblasts and lymphocytes, and Ehrlich ascites cells treated with polyarginine also form surface globular bodies similar in size. Nucleate cell-polyarginine mixtures with lower polycation doses result in cytolysis, while higher polycation doses produce pyknosis of the cell surface accompanied by reorganization of a membrane-like structure. Changes in spectrofluorometric values result from 1,6-diphenyl-1,3, 5-hexatrien binding to cell lipids, match the plasma membrane alterations. Reciprocal shake incubation amplifies and/or conditions these polycation-induced alterations. The homogeneity of pyknotic surface bodies and the apparent polycationic membrane reorganization requiring oscillatory friction forces suggest the preexistence of a multizonal glycocalyx distribution corresponding to plasma membrane compartments. The possible role of this compartmentalization in receptor and membrane recycling, as well as the involvement of reversible catalytic-like polycation condensation in macromolecular changes are discussed.","PeriodicalId":23914,"journal":{"name":"Zeitschrift fur Naturforschung. Section C, Biosciences","volume":"39 7-8","pages":"767-75"},"PeriodicalIF":0.0,"publicationDate":"1984-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/znc-1984-7-816","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17554291","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: 16

Two dimensional double-quantum and COSY spectra of porcine adenylate kinase. 猪腺苷酸激酶的二维双量子光谱和COSY光谱。

Zeitschrift fur Naturforschung. Section C, Biosciences Pub Date : 1984-07-01 DOI: 10.1515/znc-1984-7-810

P Rösch, K H Gross

引用次数: 1

[Differences between spleen and thymus cells of rats with respect to the effects of ethidium bromide on unscheduled DNA synthesis (DNA repair synthesis) and nucleoid sedimentation]. [大鼠脾脏和胸腺细胞在溴化乙啶对非计划性DNA合成(DNA修复合成)和类核沉积影响方面的差异]。

Zeitschrift fur Naturforschung. Section C, Biosciences Pub Date : 1984-06-01

K Tempel, A Goette, I Schmerold

{"title":"[Differences between spleen and thymus cells of rats with respect to the effects of ethidium bromide on unscheduled DNA synthesis (DNA repair synthesis) and nucleoid sedimentation].","authors":"K Tempel, A Goette, I Schmerold","doi":"","DOIUrl":"","url":null,"abstract":"To get further insight into the causes of differences between rat splenic and thymic cells with regard to DNA repair synthesis, scheduled (SDS) and unscheduled (UDS) DNA synthesis as well as nucleoid sedimentation of the cells were investigated under the influence of ethidium bromide (EB, 1-1000 micrograms/ml). - At concentrations of greater than or equal to 25 micrograms/ml, EB inhibited SDS of both cell species and UDS of thymic cells; much higher additions of the drug (greater than 200 micrograms/ml) were needed to diminish UDS of splenic cells, lower EB-concentrations (25-175 micrograms/ml) stimulating the UDS of the splenic cell preparation. - The sedimentation rate of splenic and thymic cell nucleoids within neutral sucrose gradients had a biphasic dependence on the EB-concentrations. As compared to thymic cells however, preincubation of splenic cells with 50-250 micrograms EB/ml resulted in a significant greater (15-30 percent) sedimentation distance. - The results suggest that a relationship exists between the stimulation of UDS and the ability of cells to establish a greater DNA compactness in the presence of EB.","PeriodicalId":23914,"journal":{"name":"Zeitschrift fur Naturforschung. Section C, Biosciences","volume":"39 6","pages":"601-5"},"PeriodicalIF":0.0,"publicationDate":"1984-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17542336","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

Rabbit antipeptide antibodies against restricted domains of the histocompatibility complex. 兔抗组织相容性复合体限制结构域的抗肽抗体。

Zeitschrift fur Naturforschung. Section C, Biosciences Pub Date : 1984-06-01 DOI: 10.1515/znc-1984-0621

A Chersi, R A Houghten

{"title":"Rabbit antipeptide antibodies against restricted domains of the histocompatibility complex.","authors":"A Chersi, R A Houghten","doi":"10.1515/znc-1984-0621","DOIUrl":"https://doi.org/10.1515/znc-1984-0621","url":null,"abstract":"The work reported here concerns the specificity of four antibodies elicited by synthetic peptides corresponding to three domains of the HLA-B7 glycoprotein, and one of the beta 2 microglobulin. One of the four peptides had been previously investigated, but the data obtained by its elicited antibodies were uncomplete. Of the three HLA-B7 peptides assayed, one was unable to raise an immune response. The other two produced antibodies in good titer that reacted with the antigen peptide, but were unable to recognize antigenic determinants when tested on membrane glycoproteins solubilized from human lymphoblastoid cells. In contract, the antibody elicited by the only fragment from the beta 2microglobulin recognized the native beta 2microglobulin molecule as well as HLA/beta 2m complexes, and reacted with intact human cells, as determined by ELISA and by FACS analysis. This peptide, which contains one of the most hydrophylic fragment of the whole molecule, is likely an important antigenic site, since it is also recognized by traditional antisera raised against native beta 2microglobulin.","PeriodicalId":23914,"journal":{"name":"Zeitschrift fur Naturforschung. Section C, Biosciences","volume":"39 6","pages":"646-51"},"PeriodicalIF":0.0,"publicationDate":"1984-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/znc-1984-0621","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17271366","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: 3

A granulopoiesis inhibitor partially purified from large-scale serum-free cultures of porcine leukocytes. 一种从猪白细胞大规模无血清培养物中部分纯化的颗粒生成抑制剂。

Zeitschrift fur Naturforschung. Section C, Biosciences Pub Date : 1984-06-01 DOI: 10.1515/znc-1984-0620

M Kastner, H R Maurer, U Gerlach, H Renner, J H Wissler

引用次数: 2