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Zerbst J, Simon R, Pospiech R, Herrmann G. Kontinuierliche Thermodilution ohne Kälteinjektion: Ein neues Prinzip der Herzzeitvolumenbestimmung. BIOMED ENG-BIOMED TE 1994. [DOI: 10.1515/bmte.1994.39.s1.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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152
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Ludwig J, Friedgen B, Herrmann G, Zahorsky R, Inselmann G, Simon R, Graefe KH, Nellessen U. Evidence for partial sympathetic cardiac reinnervation following cardiac transplantation. Eur J Cardiothorac Surg 1994; 8:388-90. [PMID: 7946418 DOI: 10.1016/1010-7940(94)90034-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Heart transplantation causes total cardiac denervation. Measurements of plasma concentrations of the main presynaptic noradrenal metabolite, dihydroxyphenylglycol (DOPEG, exclusively neuronal in origin), were used to examine the possibility of sympathetic reinnervation of the transplanted human heart. We determined arterial and coronary-venous plasma concentrations of DOPEG in 15 heart transplant recipients (28-68 years of age at the time of transplantation with the transplant ageing from 0.5 to 4 years at the time of investigation) and in nine control patients (45-75 years of age). In each of the control patients the DOPEG concentration was higher in coronary venous plasma than in arterial plasma (mean arteriovenous increment: 60 +/- 10%; P < 0.001). In the heart transplant recipients nine patients showed an arteriovenous increment in plasma DOPEG. For the mean group results it was found that the ratio of the coronary-venous to arterial DOPEG concentration was positively correlated with the time after transplantation (r = 0.92; n = 5; P < 0.05). Thus, our data provide neurochemical evidence for partial sympathetic reinnervation in some of the heart transplants. Moreover, it is suggested that the time after transplantation is unlikely to be the only determinant for the occurrence and extent of sympathetic reinnervation.
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153
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Müller R, Baran R, Bohnert U, Helbig P, Herrmann G, Hofmann A, Jäkel O, Krüger H, Malz D, Menzel W, Ortner H, Schweinzer L, Wirth S. pi pi -angular correlations for pi -p--> pi + pi -n in the region of the Delta dominance. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1993; 48:981-1002. [PMID: 9968928 DOI: 10.1103/physrevc.48.981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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154
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Cieslinski G, Lauk R, Olbrich HG, Hartmann A, Herrmann G, Kober G. [Heart volume determination as an indication of rejection after orthotopic heart transplantation]. ZEITSCHRIFT FUR KARDIOLOGIE 1993; 82:579-84. [PMID: 8237099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Endomyocardial biopsy in cardiac transplantation is still the most exact test (gold standard) to confirm or exclude a suspected rejection. Up to now, all available noninvasive tests suffer from a low sensitivity and specificity. For a further reduction of biopsies early available noninvasive methods are desirable. In the data presented a comparison between histological findings and heart volume measurements is shown in 40 patients (112 histological findings) after orthotopic cardiac transplantation. In 46 cases with no evidence of histological rejection the echocardiographically or radiologically determined heart volume was 869 +/- 142 ml/1.73 m2 body surface area, compared to 1026 +/- 178 ml/1.73 m2 in 29 cases with mild cardiac rejection. In 37 cases with a moderate or severe rejection heart volume as 1094 +/- 181 ml/1.73 m2. The diagnosis of a moderate or severe rejection by biopsy is combined with a heart volume above 950 ml/1.73 m2 with a sensitivity of 78% and a specificity of 73%. Intramyocardial edema as well as an increase in right and left ventricular volumes due to heart failure may be the causes for heart volume increase in rejection. Thus, heart volume measurement which can be performed easily during routine echocardiography gives additional information about whether a rejection has to be assumed or can be excluded. Today, sensitivity and specificity of the test does not allow a reduction of biopsy frequency. Further investigations are necessary to analyze the course of heart volume changes during an episode of rejection.
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155
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Walter K, Trautmann N, Herrmann G. Simultaneous Determination of Strontium-90 and Strontium-89 by Cerenkov-Radiation and Liquid-Scintillation Counting: a Re-Evaluation for Low-Level Counting. ACTA ACUST UNITED AC 1993. [DOI: 10.1524/ract.1993.62.4.207] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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156
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Auth MK, Keitzer RA, Scholz M, Blaheta RA, Hottenrott EC, Herrmann G, Encke A, Markus BH. Establishment and immunological characterization of cultured human gallbladder epithelial cells. Hepatology 1993; 18:546-55. [PMID: 7689530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Biliary epithelial cells are a primary site of damage in liver allograft rejection and in immunologically mediated diseases such as primary biliary cirrhosis. Human leukocyte antigens and adhesion molecules on the biliary epithelium are associated with T-lymphocytic binding, recognition and destruction. To investigate relevant cellular immunological mechanisms under standard conditions, we have established an in vitro model using human gallbladder epithelial cells. Although not directly affected in these aberrations, gallbladder epithelial cells are excellent objects for immunological investigations. More than 10(8) highly purified cells were isolated and cultured longer than 6 wk in confluent monolayers. Cell growth was routinely established on uncoated plastic culture dishes, and serum-free media could be applied for immunological experiments. Cell characterization was performed by means of specific monoclonal antibodies typical for biliary epithelial cells. Cytokeratins 1 through 8, 18 and 19 and human epithelial cell antibody 125 always showed strong positive staining. Antigen patterns were examined before and after treatment with interferon-gamma by use of immunohistochemical staining methods. Untreated human gallbladder epithelial cells expressed human leukocyte class I antigens but few or no class II antigens. After stimulation with interferon-gamma induction of human leukocyte antigen-DR, -DP and -DQ was detected. In addition, intercellular adhesion molecule 1 was induced on these gallbladder epithelial cells. Therefore an immunological competence similar to that of biliary epithelial cells could be demonstrated. In vitro cell cultures of gallbladder epithelial cells offer a promising tool for subsequent investigations concerning intrahepatic biliary epithelial cells and their interactions with cells of the immune system.
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157
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Wlaschek M, Bolsen K, Herrmann G, Schwarz A, Wilmroth F, Heinrich PC, Goerz G, Scharffetter-Kochanek K. UVA-induced autocrine stimulation of fibroblast-derived-collagenase by IL-6: a possible mechanism in dermal photodamage? J Invest Dermatol 1993; 101:164-8. [PMID: 7688402 DOI: 10.1111/1523-1747.ep12363644] [Citation(s) in RCA: 107] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Like other cytokines, IL-6 has been reported to stimulate collagenase. In this study we were interested in whether IL-6 is involved in the ultraviolet (UV) mediated up-regulation of fibroblast-derived collagenase. Confluent fibroblast monolayers were irradiated under standardized conditions. Following UVA irradiation the bioactivity of IL-6 increased up to fiftyfold in the supernatants of irradiated compared to mock-irradiated fibroblasts. As determined by Northern blot analysis this was also reflected on the pre-translational level by a tenfold increase of IL-6-specific mRNA following UVA irradiation. Induction of IL-6-specific mRNA was maximal at 6 h post-irradiation, thus clearly preceding the maximal induction of collagenase mRNA at 24 h post-irradiation. To elucidate the regulatory role of IL-6 in the UVA induction of fibroblast-derived collagenase, monospecific polyclonal neutralizing antibodies directed against recombinant human IL-6 and antisense oligonucleotides specifically inhibiting the translation of IL-6 mRNA were used at various concentrations. The amount of UVA-induced collagenase mRNA was reduced in a dose-dependent manner when antibodies or specific antisense oligonucleotides were present during and after irradiation. Taken together our data provide first evidence that UVA enhances IL-6 synthesis and secretion in fibroblasts. IL-6 induces via an autocrine mechanism collagenase and may thus contribute to the actinic damage of the dermis.
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158
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Zude F, Fan W, Trautmann N, Herrmann G, Eichler B. Thermochromatography of Platinum Elements in Oxygen: Radiochemical Studies of the Behaviour of Rhodium, Palladium, Osmium and Platinum. ACTA ACUST UNITED AC 1993. [DOI: 10.1524/ract.1993.62.12.61] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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159
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Winkelmann BR, Ihnken K, Beyersdorf F, Eckel L, Skupin M, März W, Herrmann G, Spies H, Schräder R, Sievert H. Left main coronary artery stenosis after aortic valve replacement: genetic disposition for accelerated arteriosclerosis after injury of the intact human coronary artery? Coron Artery Dis 1993; 4:659-67. [PMID: 8281371 DOI: 10.1097/00019501-199307000-00011] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND Left main coronary artery stenosis is a rare but life-threatening complication after aortic valve replacement because of coronary perfusion-related trauma to the vessel wall with cannulation of the coronary ostia. We investigated whether this complication still occurs in the 1990s despite the use of more advanced catheter materials and modern surgical preservation techniques. METHODS Four years after identification of the first two cases in 1987, five further patients had developed left main coronary artery stenosis after aortic valve replacement (incidence, 0.9%) at the cardiothoracic clinic of the J.W. Goethe University and were studied for contributing factors. RESULTS Severe coronary ostial stenosis developed within 1 to 6 months after aortic valve replacement. In one such case, intimal proliferation was seen in a biopsy specimen that was comparable to the restenosis induced by coronary angioplasty. The clinical characteristics of the patients developing the complication, the surgical technique, and the intraoperative course did not differ from the other patients. However, five of the seven patients (71%) had a common genetic trait concerning their apolipoprotein E genotype (the epsilon 4 allele) that is normally present in only 10% to 15% of patients screened (P < 0.01). CONCLUSIONS These lesions seem to result from a uniform response of the vessel wall to injury. Their incidence is probably related in part to the degree of injury after trauma to the coronary ostia during cannulation for myocardial protection. Patients with the epsilon 4 allele might be genetically predisposed for a pathologically increased response of proliferative repair mechanisms after arterial injury. The complication can be avoided by not instrumenting the coronary ostia for direct antegrade cardioplegia but using retrograde delivery as an alternative method of myocardial protection.
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160
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Mang M, Gehmecker H, Trautmann N, Herrmann G. Separation of Oxydation States of Neptunium and Plutonium by Continuous Electrophoretic Ion Focusing. ACTA ACUST UNITED AC 1993. [DOI: 10.1524/ract.1993.62.12.49] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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161
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Riegel J, Dei�enberger R, Herrmann G, K�hler S, Sattelberger P, Trautmann N, Wendeler H, Ames F, Kluge HJ, Scheerer F, Urban FJ. Resonance ionization mass spectroscopy for trace analysis of neptunium. ACTA ACUST UNITED AC 1993. [DOI: 10.1007/bf00325216] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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162
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Frech K, Herrmann G, Werner T. Computer-assisted prediction, classification, and delimitation of protein binding sites in nucleic acids. Nucleic Acids Res 1993; 21:1655-64. [PMID: 8479918 PMCID: PMC309377 DOI: 10.1093/nar/21.7.1655] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
We present a method to determine the location and extent of protein binding regions in nucleic acids by computer-assisted analysis of sequence data. The program ConsIndex establishes a library of consensus descriptions based on sequence sets containing known regulatory elements. These defined consensus descriptions are used by the program ConsInspector to predict binding sites in new sequences. We show the programs to correctly determine the significant regions involved in transcriptional control of seven sequence elements. The internal profile of relative variability of individual nucleotide positions within these regions paralleled experimental profiles of biological significance. Consensus descriptions are determined by employing an anchored alignment scheme, the results of which are then evaluated by a novel method which is superior to cluster algorithms. The alignment procedure is able to include several closely related sequences without biasing the consensus description. Moreover, the algorithm detects additional elements on the basis of a moderate distance correlation and is capable of discriminating between real binding sites and false positive matches. The software is well suited to cope with the frequent phenomenon of optional elements present in a subset of functionally similar sequences, while taking maximal advantage of the existing sequence data base. Since it requires only a minimum of seven sequences for a single element, it is applicable to a wide range of binding sites.
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163
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Dickson LB, Somani SM, Herrmann G, Abramowitz PW. Automated compounder for adding ingredients to parenteral nutrient base solutions. AMERICAN JOURNAL OF HOSPITAL PHARMACY 1993; 50:678-82. [PMID: 8470683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The effects of using an automated compounder for adding ingredients to parenteral nutrient (PN) base solutions was evaluated. Work-sampling methods were used to determine the amount of time spent by pharmacists and technicians in the production of PN solutions before and after the implementation of an automated device for adding ingredients to PN base solutions. Costs of materials and supplies were evaluated before and after the PN compounder was implemented. Qualitative (sterility) and quantitative (accuracy) analyses were performed by the hospital laboratory. A personnel time savings of 5.4 minutes per PN solution (1.0 full-time equivalent [FTE]) was shown. There was also an additional 0.5 FTE saved in activities not directly related to PN production. There was a 1.5% increase in pharmacist time (mean +/- S.D. preimplementation, 12.66 +/- 2.33 minutes; postimplementation, 12.85 +/- 1.96 minutes) and a significant 27.9% decrease in technician time (mean +/- S.D. preimplementation, 20.29 +/- 2.47 minutes; postimplementation, 14.62 +/- 2.24 minutes) per PN solution. The break-even point for personnel and supply costs was 33 PN solutions. Qualitative analysis resulted in one positive culture preimplementation and no positive cultures postimplementation. Quantitative analysis showed an improvement in compounding accuracy. The use of an automated compounder for adding ingredients to PN base solutions resulted in personnel time savings and improved accuracy.
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164
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Hanisch E, Lemperle S, Jakobi R, Weber T, Heller K, Herrmann G. [Orthotopic liver transplantation with arterial re-anastomosis in the rat--a detailed description of technique and analysis of possible errors]. LANGENBECKS ARCHIV FUR CHIRURGIE 1993; 378:73-81. [PMID: 8474299 DOI: 10.1007/bf00202113] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Liver transplantation (LTX) in the rat is a frequently used transplantation model. In the present study we give a detailed description of the suture technique for all anastomoses, except the bile duct, with arterialization of the transplanted liver over an aortoceliac segment to the recipient's aorta. Using this technique, we finally achieved survival rates of 80%. During the development stages, the main cause of death was an exceedingly long anhepatic time (> 20 min); later on, complications occurred only from insufficient anastomoses. The advantage of the suture technique over the cuff technique is that a more physiological anastomosis is obtained with less trauma to the recipient when using rearterialization. Despite the complicated suture technique, the anhepatic time can be well reduced to below 20 min.
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165
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Herrmann G, Wlaschek M, Lange TS, Prenzel K, Goerz G, Scharffetter-Kochanek K. UVA irradiation stimulates the synthesis of various matrix-metalloproteinases (MMPs) in cultured human fibroblasts. Exp Dermatol 1993; 2:92-7. [PMID: 8156175 DOI: 10.1111/j.1600-0625.1993.tb00015.x] [Citation(s) in RCA: 121] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
UVA irradiation leads to photoaging including clinical features such as wrinkle formation, reduced recoil capacity and blister formation of the skin. Besides synthesis of the extracellular matrix, its regulated degradation by various matrix-metalloproteinases (MMPs) determines the amount and the composition of the extracellular matrix within the dermis and the basement membrane of the dermo-epidermal junction. In this study we therefore ascertained whether UV irradiation could modulate the synthesis of MMPs with substrate specificities for dermal (collagen I, III, V) and basement membrane compounds (collagen IV, VII, proteoglycans, laminin) and whether synthesis of the counteracting tissue inhibitor of metalloproteinases (TIMP-1) was also affected. Following UVA irradiation specific mRNAs of MMPs 1, 2 and 3 were induced concomitantly up to 5-fold compared to mock irradiated controls. In contrast, TIMP-1 mRNA levels remained unaltered. Immunoprecipitation indicated that after UVA irradiation synthesis and secretion of MMPs 1, 2 and 3 into the supernatant increased. Taken together, our data show that UVA irradiation coordinately induced MMPs 1, 2 and 3 implying similar mechanisms in their regulatory pathways, while TIMP-1 synthesis was not altered. Hence, unbalanced synthesis of MMPs potentially contributes to the dissolution of dermal and basement membrane compounds finally leading to blister formation and cutaneous photoaging.
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166
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Hickmann U, Greulich N, Trautmann N, Herrmann G. On-line Separation of Volatile Fission Products by Thermochromatography: Comparison of Halide Systems. RADIOCHIM ACTA 1993. [DOI: 10.1524/ract.1993.60.23.127] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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167
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Meissner A, Herrmann G, Gerdesmeyer L, Simon R. [Additive effects of milrinone and dobutamine in severe heart failure]. ZEITSCHRIFT FUR KARDIOLOGIE 1992; 81:266-71. [PMID: 1621407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The hemodynamic effects of dobutamine, milrinone, and a combination of both drugs were compared intra-individually in 14 patients with severe heart failure (NYHA III: n = 9; NYHA IV: n = 5). Dobutamine (maximum dose: 9 micrograms/kg/min) and milrinone (0.5 micrograms/kg/min) each induced a comparable increase in stroke volume index (21 to 29 resp. 21 to 30 ml/m2; mean values; p less than 0.001) and reduction in pulmonary capillary wedge pressure (29 to 22 resp. 28 to 21 mm Hg; p less than 0.001), as well as in systemic (1846 to 1218 resp. 1858 to 1276 dyn s/cm5; p less than 0.001) and pulmonary vascular (301 to 195 resp. 293 to 216 dyn s/cm5; p less than 0.001) resistances. The heart rate rose significantly after dobutamine (92 to 107 min-1; p less than 0.05), but did not change after milrinone (94 to 95 min-1; ns). Neither drug had a significant effect on systemic arterial pressures. The combination of milrinone and dobutamine induced a further significant rise in stroke volume index (37 ml/m2; p less than 0.01) when compared to either drug alone. The combination also caused an additional fall in pulmonary capillary wedge pressure (14 mm Hg; p less than 0.01), as well as in systemic (799 dyn s/cm5; p less than 0.001) and pulmonary (133 dyn s/cm5; p less than 0.001) vascular resistances. When compared to dobutamine alone, the combined therapy did not significantly change the heart rate and systemic arterial pressures. The combined administration of a beta-adrenergic agonist and a phosphodiesterase inhibitor induces beneficial hemodynamic effects.(ABSTRACT TRUNCATED AT 250 WORDS)
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168
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Kroll W, Nellessen U, Herrmann G, Kaatsch HJ, Regensburger D, Simon R. [An aortopulmonary shunt after a knife wound]. Dtsch Med Wochenschr 1992; 117:619-22. [PMID: 1568429 DOI: 10.1055/s-2008-1062356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
An extensive hemopneumothorax developed in a 23-year-old man after having been knifed in the region of the left nipple. After general surgical care a Bülau suction drain was inserted. Cardiological examination became necessary a week later when a chest X-ray film demonstrated an enlarged cardiac silhouette. Echocardiography revealed pericardial effusion (about 600 ml) which was removed by pericardial aspiration. Cross-sectional and colour Doppler echocardiography showed a shunt between the aorta and right ventricular outflow tract at the origin of the pulmonary artery. At surgery a fistula between the root of the aorta and the pulmonary artery was identified (the posterior sinus near the anulus was nearly completely detached). The fistula was closed and the pulmonary valve reconstructed. The early and late postoperative course was unremarkable.
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169
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Strauss M, Hering S, Lieber A, Herrmann G, Griffin BE, Arnold W. Stimulation of cell division and fibroblast focus formation by antisense repression of retinoblastoma protein synthesis. Oncogene 1992; 7:769-73. [PMID: 1565472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Circumstantial evidence supports a role for the retinoblastoma susceptibility gene, Rb-1, in the maintenance of normal cell growth, in that loss of its function results in abnormal growth and malignancy. Here we report that a high rate of mitosis and efficient dense focus formation in human embryonic lung fibroblasts (HEL cells) is induced by antisense oligonucleotide-directed inhibition of synthesis of p105-Rb, the product of the Rb-1 gene. mRNA specific for p105-Rb is truncated at the site of base pairing with the antisense oligonucleotide, and no synthesis of p105-Rb is observed. The rate of mitosis is considerably increased and the frequency of dense focus formation is extremely high in treated cells. However, although phosphothioate oligodeoxyribonucleotides taken up by the cells remain stable for at least 4 weeks, the recipient cells do not become immortal; nor are they able to induce tumor formation in nude mice. Thus, loss of Rb-1 function is not sufficient per se to allow malignant transformation.
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170
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Parthier B, Bruckner C, Dathe W, Hause B, Herrmann G, Knöfel HM, Kramell HM, Kramell R, Lehmann J, Miersch O, Reinbothe ST, Sembdner G, Wasternack C, Zurnieden U. Jasmonates: Metabolism, Biological Activities, and Modes of Action in Senescence and Stress Responses. PROGRESS IN PLANT GROWTH REGULATION 1992. [DOI: 10.1007/978-94-011-2458-4_30] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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171
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Hanisch E, Herrmann G, Lemperle S, Jakobi R, Weber T, Wagner M. [Proliferation kinetic studies in the syngeneic liver transplantation mode in the rat. Effect of re-arterialization on the transplant]. LANGENBECKS ARCHIV FUR CHIRURGIE 1992; 377:360-7. [PMID: 1479860 DOI: 10.1007/bf00574775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Successful orthotopic liver transplantation (OLT) can be achieved in the rat. We used bromo-2-deoxyuridine (BrdU) as a proliferation marker to document morphological differences between OLT with and without rearterialization. Animals with portal anastomosis alone had a significantly increased proliferation rate of hepatocytes, Kupffer cells, and bile duct epithelial cells, as indicated by strong staining with BrdU, 8 days post-transplant compared to animals with rearterialization. Regeneration of ischemically damaged liver parenchymal cells may account for this observation. Thus, OLT with rearterialization appears to be the more physiological transplant model.
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172
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Eichler B, Zude F, Fan W, Trautmann N, Herrmann G. Volatilization and Deposition of Ruthenium Oxides in a Temperature Gradient Tube. ACTA ACUST UNITED AC 1992. [DOI: 10.1524/ract.1992.56.3.133] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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173
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Lin JC, Reefschläger J, Herrmann G, Pagano JS. Structure-activity relationship between (E)-5-(2-bromovinyl)- and 5-vinyl-1-beta-D-arabinofuranosyluracil (BV-araU, V-araU) in inhibition of Epstein-Barr virus replication. Antiviral Res 1992; 17:43-52. [PMID: 1310582 DOI: 10.1016/0166-3542(92)90089-n] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The structure-activity relationship between (E)-5-(2-bromovinyl)- and 5-vinyl-1-beta-D-arabinofuranosyluracil (BV-araU and V-araU) in inhibition of Epstein-Barr virus (EBV) was evaluated. Both V-araU and BV-araU effectively inhibited EBV replication in virus-producer P3HR-1(LS) cells, as determined by DNA-DNA hybridization. The 50% effective doses (ED50) for viral DNA replication were 0.005 and 0.3 microM for V-araU and BV-araU, respectively. The in vitro therapeutic index was 4000 for V-araU and 1300 for BV-araU. Synthesis of EBV-induced polypeptides with molecular weights of 145,000 (145, 140, 130, and 110 kDa) was significantly inhibited by both drugs. Only V-araU inhibited the synthesis of 85-, 55-, and 32-kDa polypeptides by approx. 50%. Kinetic analysis of inhibition and reversibility of EBV DNA replication after removal of the drugs indicated that BV-araU has a more prolonged inhibitory effect than V-araU. These results indicate that the substitution of H by Br in the 5-vinyl group results in marked reduction in anti-EBV activity while prolonging the drug effect and diminishing cytotoxicity.
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174
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Leimenstoll G, Loose G, Harder T, Herrmann G, Papadopoulos I, Burck HC, Niedermayer W. [Inferior vena cava compression syndrome in cystic kidney. Duplex ultrasonic diagnosis]. Dtsch Med Wochenschr 1991; 116:1583-7. [PMID: 1935624 DOI: 10.1055/s-2008-1063792] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Four months after renal transplantation for polycystic renal degeneration a 38-year-old man developed breathing-related pain in the left upper lung and a sinus tachycardia (130/min). Lung perfusion scintigraphy demonstrated pulmonary emboli from an acute venous thrombosis of the left lower leg. Polycythaemia and impairment of clot-inhibiting factors were excluded. Ultrasound examination of the abdomen revealed stenosis of the inferior vena cava (IVC) distal to the hepatic veins, dorsal to the liver and ventral of a huge right polycystic kidney which had been left in situ at the time of the renal transplantation. Duplex sonography demonstrated a band-like flow profile in the region of the stenosis. Blood flow was clearly increased (0.62 m/s) and not affected by either heart rate or breathing movements. The findings were confirmed by angiography. The right kidney, weighing 5 kg, was removed at surgery. The IVC stenosis was postoperatively found to be relieved and duplex sonography gave normal findings.
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175
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Hartmann A, Baum RP, Klepzig H, Huth A, Mondorf U, Herrmann G, Cieslinski G, Olbrich HG, Hör G, Krause E. [Experiences with the application of monoclonal Indium-111 antimyosin scintigraphy in the diagnosis of rejection episodes following orthotopic heart transplantation]. ZEITSCHRIFT FUR KARDIOLOGIE 1991; 80:454-8. [PMID: 1926991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Indium-111-labeled Fab fragment imaging using a murine antimyosin monoclonal antibody (Myoscint, Centocor, Leiden) was evaluated for efficacy in detecting cardiac allograft rejection. Diagnosis of rejection was made by endomyocardial biopsy with four to five samples taken for each procedure. Eighty-one studies were performed in 25 patients (21 men, four women, mean age 50 +/- 9 years) from 2 weeks to 45 months after cardiac transplantation. 0.5 mg of the monoclonal antibody labeled with 60 MBq Indium-111 (Antimyosin-Fab-DTPA) was administered i.v. Planar scintigraphic images were obtained in LAO 45 and anterior projections as well as "half-body-scintigrams" 48 h after injection. Using the regions-of-interest-(ROI)technique the relative uptake over the lung and the heart was determined and an index of In-111 uptake was calculated. A heart-to-lung ratio of 1.5 or higher was considered indicative for moderate to severe rejection. Specificity was 86% (nine false-positive In-111 studies in 68 negative biopsy studies), sensitivity was 85% (two false-negative In-111 studies in 13 pathological biopsy studies). It is concluded that the In-111 method has a high sensitivity and specificity in detecting heart transplant rejection and may be useful in the monitoring of patients in the chronic phase after heart transplantation. The 48-h delay in establishing the diagnosis limits the applicability in acute severe rejection.
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