326
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Wenzel G, Hoffmann F, Thomas E. Heterozygous microspore-derived plants in rye. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 1976; 48:205-208. [PMID: 21369917 DOI: 10.1007/bf00527372] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/1976] [Indexed: 05/30/2023]
Abstract
In a particular experimental series involving anthers from F(1) hybrid plants of Secale cereale L., it was possible to induce the formation of 68 microspore-derived plantlets of which 61 were albinos and 7 green. 6 of the albino plants were haploid, whereas most of the others were diploid. All green rye plants were directly diploid and, after extensive screening, proved to be heterozygous. Evidence is presented suggesting that these latter plants arose from unreduced microspores. The significance of this finding is discussed.
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327
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Hoffmann F, Harnisch JP. [Dendritic lesions in herpes simplex infection of the cornea. Scanning and transmission-electron microscope findings (author's transl)]. ALBRECHT VON GRAEFES ARCHIV FUR KLINISCHE UND EXPERIMENTELLE OPHTHALMOLOGIE. ALBRECHT VON GRAEFE'S ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY 1976; 198:63-72. [PMID: 1083157 DOI: 10.1007/bf00411446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Thirty rabbits were divided into 10 groups of 3 animals. In the case of each animal 1 drop of Herpes virus hominis suspension (HVH) was applied to the intact cornea of the right eye. Within the period between the 2nd and 20th day after infection occurred, three animals were killed each time and the corneae were examined by scanning- and transmission-electron microscope. Circular foci and dendritic lesions were observed starting with the 4th day. After the 12th day, dendritic lesions could no longer be observed. Circular foci and dendritic lesions possess a width of about 200 mu which remains unchanged during the entire observation period. The areas of ulceration are obscured by lateral epithelium migrations. The observation that epithelial lesions do not change their demensions over an extended period of time, speaks for an approximate time balance between cellular damage caused by the viruses and the migratory speed of the epithelium. This mechanism is disrupted in the neighboring circular foci. The cytotoxic effect is predominant. Circular foci are confluent. The dendritic lesion so characteristic for herpes simplex infection of the cornea is explained by the confluence of several circular foci which are accidentally positioned next to each other.
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328
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Harnisch JP, Hoffmann F, Dumitrescu L. Side-effects of local anesthetics on the corneal epithelium of the rabbit eye. ALBRECHT VON GRAEFES ARCHIV FUR KLINISCHE UND EXPERIMENTELLE OPHTHALMOLOGIE. ALBRECHT VON GRAEFE'S ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY 1975; 197:71-81. [PMID: 1081854 DOI: 10.1007/bf00506644] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The toxic side-effects of 0.4% Novesine and Chibro-Kerakain were investigated by scanning- and transmission electron microscopy in 15 rabbit corneae each in intervals of 3, 6, 10, 15 and 60 mins. The lesions following Kerakain were larger and occurred earlier. After 60 mins, the specimens after Novesine application showed an almost complete repair process, whereas after Kerakain the epithelial surface appeared to be functionally impaired.
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329
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Hager H, Hoffmann F, Dumitrescu L. Scanning electron microscopy in ophthalmology. ANNALS OF OPHTHALMOLOGY 1975; 7:1361-71. [PMID: 1103692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In the context the technique of the scanning electron microscopy is described and the results are shown gained by the scanning electron microscope in ophthalmology. It is pointed out that questions specific to surface can be answered quicker and easier, if superificial microscopy together with the scanning electron microscope is used an additional source of information. Scanning electron optical pictures are very useful for ophthalmologic science.
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330
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Hoffmann F, Dumitrescu L, Hager H. [Pigment glaucoma. Scanning-electronmicroscopic findings. (author's transl)]. Klin Monbl Augenheilkd 1975; 166:609-13. [PMID: 1177389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In case of a patient suffering from pigment glaucoma trabeculectomy was performed on both eyes. In one trabecular section the outer wall of Schlemm's canal, and in the other the trabecular framework were investigated by scanning-electronmicroscopy. The intertrabecular spaces were largely blocked by pigment granula, which, in some places, were stored in the clump cells of the iris. Even the outer wall of Schlemm's canal was dotted with pigment granula. The scanning-electronmicroscopic findings revealed the pigmental drainage blocking of the aqueous humour and explained the acute pressure rise in the pigment glaucoma with wide iridocorneal angle by an acute obstruction of the already largely blocked intertrabecular spaces.
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331
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Hoffmann F, Dumitrescu L, Haase J, Museteanu C. [Herpes Simplex Keratitis under the Scanning lectron Microscope(author's transl)]. ALBRECHT VON GRAEFES ARCHIV FUR KLINISCHE UND EXPERIMENTELLE OPHTHALMOLOGIE. ALBRECHT VON GRAEFE'S ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY 1975; 193:153-60. [PMID: 1078957 DOI: 10.1007/bf00419359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In 12 rabbits a dendritic keratitis could be provoked by applying a suspension of herpes viruses (Herpes virus hominis -- HVH type 1) onto their previously both uviolised and non-uviolised corneae. 4 days later ophthalmectomy was performed and the corneae were examined by the scanning electron microscope. Macroscopically, both in the uviolised eyes and the control eyes punctiform lesions of the corneae were observed. After short ray-treatment (3 min) no differences were present between the uviolised and non-uviolised eyes. At longer time of exposure (7--15 min), however, a more distinct alteration occurred in the uviolised eye. The scanning-electron-microscopical picture showed the dendritic lesions to be composed of numerous circular foci of 100 to 200 mu. There were no differences in the lesions of the uviolised and non-uviolised corneae. The fact that after ultraviolet ray-treatment a great part of the epithelial cells is sloughed off, but, nevertheless, the same dendritic lesions develop, contradicts the assumption of a morphological substrate of the epithelial cells being the inducing factor.
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332
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Hoffmann F, Kull U. Effects of abscisic acid on photosynthesis of protoplasts from Petunia hybrida. EXPERIENTIA 1974; 30:746-7. [PMID: 4847654 DOI: 10.1007/bf01924161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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333
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Hoffmann F, Harnisch JP. [Time of surgical interventions on the inner wall of the Schlemm's canal in glaucoma simplex (author's transl)]. Klin Monbl Augenheilkd 1974; 164:640-5. [PMID: 4842531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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334
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Padval DG, Hoffmann F. [Detection of melanosomes in Lyell's syndrome]. DER HAUTARZT 1974; 25:81. [PMID: 4596882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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335
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Heppke G, Hoffmann F, Resewitz E. Trabecular Electropuncture: a Contribution to the Theory of Glaucoma. Ophthalmic Res 1974. [DOI: 10.1159/000264724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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336
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Hoffmann F, Keppke G, Resewitz EP. Proceedings: Trabecular-electro-puncture (TEP): an operation for glaucoma? Exp Eye Res 1973; 17:396. [PMID: 4765283 DOI: 10.1016/0014-4835(73)90273-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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337
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Hoffmann F, Hauck W. [Study of CO2-effect on the retinal vessel path (author's transl)]. Klin Monbl Augenheilkd 1973; 163:457-62. [PMID: 4776067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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338
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Hauck W, Hoffmann F. [Fluorescence angiography of the retina in halothane-anaesthesia (author's transl)]. Anaesthesist 1973; 22:404-7. [PMID: 4762348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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339
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340
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Richter KH, Hoffmann F, Schwenen M. [Smallpox: vaccination and incubation vaccination]. FORTSCHRITTE DER MEDIZIN 1972; 90:902-6. [PMID: 4642944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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341
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Hager H, Hauck W, Heppke G, Hoffmann F, Resewitz EP. [Experimental principles of trabecular-electro-puncture (TEP)]. ALBRECHT VON GRAEFES ARCHIV FUR KLINISCHE UND EXPERIMENTELLE OPHTHALMOLOGIE. ALBRECHT VON GRAEFE'S ARCHIVE FOR CLINICAL AND EXPERIMENTAL OPHTHALMOLOGY 1972; 185:95-107. [PMID: 4627040 DOI: 10.1007/bf00410053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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342
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Hoffmann F, Bauschke D. Rasterelektronenmikroskopische Untersuchungen der Keratitis photoelectrica. Cornea 1972. [DOI: 10.1007/978-3-642-86006-5_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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343
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Hoffmann F. The Surface of Epithelial Cells of the Cornea under the Scanning Electron Microscope. Ophthalmic Res 1972. [DOI: 10.1159/000266195] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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344
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Hoffmann F, Schweichel JU. The Microvilli Structure of the Corneal Epithelium of the Rabbit in Relation to Cell Function. Ophthalmic Res 1972. [DOI: 10.1159/000265970] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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345
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Hager H, Hoffmann F, Dumitrescu L. [Scanning electron microscopy in ophthalmology]. Klin Monbl Augenheilkd 1971; 159:170-8. [PMID: 4999499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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346
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347
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Hoffmann F, Eckert J, Kayser W. [On the effect of lynesterol on follicular stimulation and ovulation in women in intraovarian application]. Geburtshilfe Frauenheilkd 1969; 29:242-8. [PMID: 5777590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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348
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Prokop O, Graffi A, Hoffmann F, Schnitzler S. [Studies on the detectability of N-acetyl-D-galactosamine in human tumors and ultimate medical consequences of the findings]. DAS DEUTSCHE GESUNDHEITSWESEN 1968; 23:1926-9. [PMID: 5712780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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349
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Hoffmann F, Wohlfarth DC. [On the testing of a deriviative of diaminostilbenedisulfonic acid for carcinogenicity]. DEUTSCHE STOMATOLOGIE 1968; 18:647-52. [PMID: 5247194] [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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350
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Anselmino KJ, Hoffmann F. [On the parathyreotropic effect of the anterior pituitary]. DIE MEDIZINISCHE WELT 1968; 28:1621-6. [PMID: 5706221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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