226
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Sauer H, Marklein G, Schäfer E. [Evaluation of cross-reactions with hepatitis-B-antigen (Australia-antigen) in the Ausria-testsystem (author's transl)]. ZEITSCHRIFT FUR IMMUNITATSFORSCHUNG, EXPERIMENTELLE UND KLINISCHE IMMUNOLOGIE 1974; 146:414-22. [PMID: 4282990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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227
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Clar HE, Fessl-Alemany E, Schäfer E, Sünkler HJ. [Intracranial pressure and circulatory reactions to ketamine in the rabbit]. ARZNEIMITTEL-FORSCHUNG 1974; 24:23-4. [PMID: 4406103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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228
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Schäfer E, Sauer HJ. [Biochemical differential diagnosis of hepatitis as a catamnestic expedient for those who judge hepatitis as a facultative tropic or occupational disease (author's transl)]. DAS OFFENTLICHE GESUNDHEITSWESEN 1973; 35:761-5. [PMID: 4273836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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229
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Schmidt W, Marmé D, Quail P, Schäfer E. Phytochrome: First-order phototransformation kinetics in vivo. PLANTA 1973; 111:329-336. [PMID: 24469699 DOI: 10.1007/bf00385552] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/1973] [Indexed: 06/03/2023]
Abstract
The deviation from first order commonly observed in phototransformation kinetics of phytochrome in vivo is due to a light-intensity gradient within the sample. This gradient was measured and was found to approach that predicted by the Kubelka-Munk theory of light scatter in turbid materials. The influence of this gradient is eliminated and first-order phototransformation kinetics are obtained, when either (i) thin samples of translucent (low optical density) material of high phytochrome content are measured directly; or (ii) thin samples of opaque (high optical density) or translucent material are sandwiched between two layers of light-scattering material. This result is consistent with the existence of only one population of photoreversible phytochrome molecules in vivo.
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230
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Quail PH, Marmé D, Schäfer E. Particle-bound phytochrome from maize and pumpkin. NATURE: NEW BIOLOGY 1973; 245:189-91. [PMID: 4517784 DOI: 10.1038/newbio245189a0] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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231
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Schäfer E, Schmidt W, Mohr H. COMPARATIVE MEASUREMENTS OF PHYTOCHROME IN COTYLEDONS AND HYPOCOTYL HOOK OF MUSTARD (SINAPIS ALBA L.). Photochem Photobiol 1973. [DOI: 10.1111/j.1751-1097.1973.tb06428.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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232
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Jendricke K, Rager K, Schäfer E, Reisert I. [Preliminary report on clinical, biochemical, and anatomical investigations of boys with undescended testes (author's transl)]. MONATSSCHRIFT FUR KINDERHEILKUNDE 1973; 121:634-5. [PMID: 4149189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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233
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Quail PH, Schäfer E, Marmé D. Turnover of phytochrome in pumpkin cotyledons. PLANT PHYSIOLOGY 1973; 52:128-31. [PMID: 16658512 PMCID: PMC366453 DOI: 10.1104/pp.52.2.128] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
By using density labeling, it was found that the protein moiety of phytochrome is synthesized de novo in the red-absorbing form in cotyledons of dark-grown pumpkin (Cucurbita pepo L.) seedlings, as well as those irradiated with red light and returned to the dark. The rate of synthesis appears to be unaffected by the light treatment. Turnover of the red-absorbing form was also detected in dark grown seedlings using density labeling, while turnover of the far red-absorbing form is already implied from the well known "destruction" observed in irradiated seedlings. In both cases, true degradation of the protein is involved, but the rate constant of degradation of the far red-absorbing form may be up to two orders of magnitude greater than that of the red-absorbing form. The data indicate that, in pumpkin cotyledons, phytochrome levels are regulated against a background of continuous synthesis through divergent rate constants of degradation of the red and far red-absorbing forms and the relative proportions of the two forms present.
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234
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Quail PH, Schäfer E, Marmé D. De novo synthesis of phytochrome in pumpkin hooks. PLANT PHYSIOLOGY 1973; 52:124-7. [PMID: 16658511 PMCID: PMC366452 DOI: 10.1104/pp.52.2.124] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Phytochrome becomes density labeled in the hook of pumpkin (Cucurbita pepo L.) seedlings grown in the dark on D(2)O, indicating that the protein moiety of the pigment is synthesized de novo during development. Red light causes a rapid decline of the total phytochrome level in the hook of etiolated seedlings but upon return to the dark, phytochrome again accumulates. These newly appearing molecules are also synthesized de novo. Newly synthesized phytochrome in both dark-grown and red-irradiated seedlings is in the red-absorbing form. Turnover of the red-absorbing form is indicated by the density labeling of phytochrome during a period when the total phytochrome level in the hook of dark-grown seedlings remains constant. However, it was not possible to determine whether this results from intracellular turnover or turnover of the whole cell population during hook growth.
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235
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Sachs H, Schäfer E. [Feulgen DNA cytophotometry in cellular smears of the cervix uteri]. ARCHIV FUR GYNAKOLOGIE 1973; 215:171-86. [PMID: 4125891 DOI: 10.1007/bf00673027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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236
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Röllinghoff M, Schäfer E. [Comparison of the antibody response after vaccination with two influenza vaccines (author's transl)]. ZEITSCHRIFT FUR IMMUNITATSFORSCHUNG, EXPERIMENTELLE UND KLINISCHE IMMUNOLOGIE 1972; 144:305-15. [PMID: 4283249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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237
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Ulian P, Schäfer E. [Comparative examinations for the serological diagnosis of lues]. DAS OFFENTLICHE GESUNDHEITSWESEN 1972; 34:398-408. [PMID: 4262340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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238
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Plischka H, Schäfer E. A Study on the Immunoglobulin Class of the Anti-A1 Isoagglutinin. THE JOURNAL OF IMMUNOLOGY 1972. [DOI: 10.4049/jimmunol.108.3.782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Abstract
It is shown by DEAE-cellulose chromatography, gel filtration on Sephadex G-200 and by density gradient ultracentrifugation that there are IgG isoantibodies in O sera, which can differentiate between A1 and A2 red cells quite well. From this it is concluded that the difference between A1 and A2 red cells must be qualitative.
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239
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Plischka H, Schäfer E. A study on the immunoglobulin class of the anti-A 1 isoagglutinin. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 1972; 108:782-4. [PMID: 5011756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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240
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Marmé D, Marchal B, Schäfer E. A detailed analysis of phytochrome decay and dark reversion in mustard cotyledons. PLANTA 1971; 100:331-336. [PMID: 24488245 DOI: 10.1007/bf00385197] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
During the first 10 min after a saturating dose of red light, 72 h dark-grown mustard cotyledons show no phytochrome decay. Within the same time interval there exists a transient form of P fr (=P fr (T) ) which is no longer photoconvertible at 0°C, but is at 25°C. This P fr (T) converts in the dark to P fr and P r . These "dark reversions" take about 10 min. After a lag phase of 10 min the P fr decay can be described by a single, first order kinetic curve. The time courses of these reactions are functions of the time of etiolation.
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241
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Boisard J, Marmé D, Schäfer E. The demonstrationin vivo of more than one form ofP fr. PLANTA 1971; 99:302-310. [PMID: 24487681 DOI: 10.1007/bf00385822] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/1971] [Indexed: 06/03/2023]
Abstract
Phototransformation studies of pumpkin phytochromein vivo indicate two populations, a slow and a fast one. The ratio between the two populations can be altered by different light-dark-pretreatments. The destruction kinetics ofP fr also show a deviation from a first order curve which indicates the existence of two populations ofP fr with respect to decay. No significantP fr →P r dark reversion could be detected. Two models are discussed, which could explain the shape of the destruction kinetics observed and the different ratios of the two populations obtained from phototransformation measurements.
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242
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Ebke J, Schäfer E. [Detection of hemagglutination-inhibiting antibodies to arboviruses in sera of young individuals in the Federal Republic of Germany and in the Republic of Togo (West Africa)]. ZENTRALBLATT FUR BAKTERIOLOGIE, PARASITENKUNDE, INFEKTIONSKRANKHEITEN UND HYGIENE. ERSTE ABTEILUNG ORIGINALE. REIHE A: MEDIZINISCHE MIKROBIOLOGIE UND PARASITOLOGIE 1971; 218:149-59. [PMID: 4403535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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243
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Schäfer E, Marchal B, Marmé D. On the phytochrome phototransformation kinetics in mustard seedlings. PLANTA 1971; 101:265-276. [PMID: 24488431 DOI: 10.1007/bf00386833] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/1971] [Indexed: 06/03/2023]
Abstract
The in vivo phototransformation kinetics of mustard hook and cotyledon phytochrome exhibit a deviation from a single first order curve, quite similar to that for pumpkin hooks as reported in a previous paper (Boisard, Marmé and Schäfer, 1971). The P fr→Prkinetics can be characterized by the ratios ɛ fr,λ (I) · P fr (I) /ɛ fr,λ (II) · P fr,λ (II) and [Formula: see text] where P fr (I) and P fr (II) are two populations of phytochrome molecules which convert to P rwith a first order half-life of [Formula: see text] and [Formula: see text]. These ratios depend on the length of time of etiolation. The ratio ɛ fr,λ (I) · P fr (I) /ɛ fr,λ (II) · P fr,λ (II) is independent of the amount of total P frpresent at the beginning of the P fr→Prphototransformation after a non-saturating dose of red light. The half-lives of the two populations, however, depend on the concentration of total P frinitially present. P fr→Prphototransformation kinetics with different light intensities show that reciprocity holds.
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244
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Röllinghoff M, Schäfer E. [The effectiveness of influenza inoculation. Serological testing of a polyvalent vaccine containing Hongkong A2 serum]. MUNCHENER MEDIZINISCHE WOCHENSCHRIFT (1950) 1970; 112:2178-82. [PMID: 5536877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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245
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Barth P, Schäfer E. [A new work-saving record form for Heidelberg laboratory]. DEUTSCHE SCHWESTERNZEITUNG 1970; 23:391-3. [PMID: 5202185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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246
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Sturde HC, Schäfer E. [Epidemiological situation of venereal diseases]. DAS OFFENTLICHE GESUNDHEITSWESEN 1969; 31:348-53. [PMID: 4242643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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247
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Schäfer E. [Introduction to Christian ethics]. DIE AGNES KARLL-SCHWESTER, DER KRANKENPFLEGER 1968; 22:397. [PMID: 5187998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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248
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Piper W, Hardmeier T, Schäfer E. [Scleromyxedema Arndt-Gottron: a paraproteinemic disease]. SCHWEIZERISCHE MEDIZINISCHE WOCHENSCHRIFT 1967; 97:829-38. [PMID: 5613452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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249
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Schäfer E, Schlude H. Über die chemie substituierter benzochinone V synthese substituierter 4.7-dihydro-2.1-benzisoxazolone-(4.7). Tetrahedron Lett 1967. [DOI: 10.1016/s0040-4039(01)89681-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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250
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Schäfer E. [My internship on a ward for geriatric and chronic patients]. ZEITSCHRIFT FUR KRANKENPFLEGE. REVUE SUISSE DES INFIRMIERES 1966; 59:395-7. [PMID: 5178006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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