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Schröder R, Striegler A, Zimmermann G, Mühlstädt M. Über die Umsetzung von Cyclopentadien mit Äthylenoxid. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/prac.19733150520] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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77
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Blankenburg B, Fiedler H, Hampel M, Hauthal HG, Just G, Kahlert K, Korn J, Müller KH, Pritzkow W, Reinhold Y, Röllig M, Sauer E, Schnurpfeil D, Zimmermann G. DIELS-ALDER-Reaktionen. II. Über die Anwendung linearer Freier-Energie-Beziehungen auf DIELS-ALDER-Reaktionen. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/prac.19743160513] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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78
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Drevermann A, Pickmann C, Tiefers R, Zimmermann G. Online process control for directional solidification by ultrasonic pulse echo technique. ULTRASONICS 2004; 42:105-108. [PMID: 15047269 DOI: 10.1016/j.ultras.2004.01.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A method of controlling the actual growth velocity during directional solidification based on ultrasound has been developed. For this purpose a pulse echo technique is used to measure the actual solidification rate online. This quantity is used to control the furnace velocity. Solidification experiments with metallic alloys and constant furnace velocity often result in non-steady actual solidification rates. Experiments carried out with online process control demonstrate that a really steady-state solidification with a constant solidification rate is achieved.
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Mayer M, Büttner H, Ebert F, Zimmermann G, Gottfried H, Michael G. Einfluss einer Laval-Düse auf die Partikelbildung im Flammenprozess. CHEM-ING-TECH 2004. [DOI: 10.1002/cite.200403337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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80
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Zimmermann G, Rossier J, Meyer de Stadelhofen F. Validation de la version française du questionnaire I7 d’impulsivité. Influence de la personnalité, du sexe et de la religion. ANNALES MEDICO-PSYCHOLOGIQUES 2004. [DOI: 10.1016/j.amp.2003.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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81
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Schimmack W, Zimmermann G, Sommer M, Dietl F, Schultz W, Paretzke HG. Soil-to-grain transfer of fallout 137Cs for 28 winter wheat cultivars as observed in field experiments. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2004; 42:275-284. [PMID: 14676962 DOI: 10.1007/s00411-003-0217-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2003] [Accepted: 10/30/2003] [Indexed: 05/24/2023]
Abstract
In order to find wheat cultivars with a minimum soil-to-grain transfer of fallout (137)Cs, 28 winter wheat cultivars were investigated at 3 different sites with different soil types in Bavaria, Germany. Each cultivar was grown on an area of 10 m(2) and harvested in August 1999. The soil-to-grain concentration ratios (C(r)) of (137)Cs varied by a factor of up to 3 from cultivar to cultivar at a given site and from site-to-site for a given cultivar. The mean C(r) values at the three sites, 4.2 x 10(-4), 4.9 x 10(-4) and 7.5 x 10(-4), differed significantly. The fact that no cultivar showed similar C(r) values at the three sites indicates a strong influence of the soil on C(r). The cultivars Flair, Kornett and Previa showed a minor uptake of (137)Cs compared with the mean of all cultivars at each site. Unlike (137)Cs, the (40)K concentrations in the wheat grains varied only within a small range (122-190 Bq kg(-1)) at each site, which is due to the potassium regulation by the plants. For both radionuclides, the differences between the root uptake characteristics of the cultivars may not only be explained by an inter-cultivar variability due to genetic differences between the cultivars, but also by an intra-cultivar variability due to different soil conditions.
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82
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Götze K, Zimmermann G, Alexander H. Expression von beta- und alpha-hCG mRNA und die Bildung von hCG in der Dezidua bei Patienten mit Tubargravidität. Geburtshilfe Frauenheilkd 2003. [DOI: 10.1055/s-2003-815262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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83
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Haid A, Koeberle-Wuehrer R, Offner F, Jasarevic Z, Fritzsche H, Zimmermann G. [Clinical usefulness and perspectives of sentinel node biopsy in the management of breast cancer]. Chirurg 2003; 74:657-64. [PMID: 12883794 DOI: 10.1007/s00104-003-0633-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
INTRODUCTION In view of its predictive potential, axillary nodal status plays a particularly important role in breast cancer. The concept of sentinel node biopsy (SNB) revealed an accurate method with low postoperative morbidity for staging the axilla in patients with lymph node-negative breast cancer. The aim of this study was to show that SNB alone must have a place in routine clinical work and is reliable after preoperative chemotherapy (PC) and also in patients with multicentric tumors (MC). PATIENTS AND METHOD Between April 1997 and March 2002, a total of 300 SNBs were performed in patients with uni- or bilateral breast cancer. Of them, 45 who had completed PC and 13 with multicentric lesions underwent SNB followed by axillary dissection. The sentinel nodes (SN) were labelled with a blue dye and radioactive colloids. Median follow-up was 33.6 months (range 8.2-67.0) (StAw 1.4). RESULTS The detection rate in the learning phase was 81.8% and later 93.5%, independently of the size of the primary tumor. Overall accuracy and negative predictive value of the first 55 patients, after PC and in those with MC came to 97.8% and 96.7%, 97.6%, 95.8% and 100%, respectively. Through focused pathologic examination, staging was improved in 11.3% of patients. A year after the procedure, one patient developed recurrence. Morbidity after SNB alone was significantly lower than after axillary dissection. CONCLUSION Our experience shows SNB to be reliable and accurate for axillary staging in breast cancer patients. Morbidity after SNB alone was low. Conclusive data on the local recurrence rate are not yet available. Under certain conditions, SNB appears to have future clinical potential, even in patients with PC and MC, which must be confirmed in further multicentric studies. In the meantime, this method has attained definite value in the surgical therapy of breast cancer patients.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Axilla
- Breast Neoplasms/drug therapy
- Breast Neoplasms/pathology
- Breast Neoplasms/surgery
- Carcinoma, Ductal/drug therapy
- Carcinoma, Ductal/pathology
- Carcinoma, Ductal/surgery
- Carcinoma, Lobular/drug therapy
- Carcinoma, Lobular/pathology
- Carcinoma, Lobular/surgery
- Combined Modality Therapy
- Female
- Follow-Up Studies
- Humans
- Lymph Node Excision
- Mastectomy, Modified Radical
- Mastectomy, Segmental
- Middle Aged
- Neoadjuvant Therapy
- Neoplasm Staging
- Neoplasms, Multiple Primary/drug therapy
- Neoplasms, Multiple Primary/pathology
- Neoplasms, Multiple Primary/surgery
- Sentinel Lymph Node Biopsy
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84
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Zimmermann G. Invited Commentary to:'Prevention of Gas Loss in Total Extraperitoneal Hernia Repair'. Eur Surg 2003. [DOI: 10.1046/j.1682-4016.2003.03019_2.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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85
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Zimmermann G, Koberle-Wuhrer R. Invited Commentary to:'Multivisceral Surgery for Advanced Gynaecological Malignancies'. Eur Surg 2003. [DOI: 10.1046/j.1682-4016.2003.03047.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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86
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Zimmermann G, Baier D, Majer J, Alexander H. Expression of beta hCG and alpha CG mRNA and hCG hormone in human decidual tissue in patients during tubal pregnancy. Mol Hum Reprod 2003; 9:81-9. [PMID: 12569177 DOI: 10.1093/molehr/gag006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We recently showed that endometrial tissue produces hCG during the secretory phase of the menstrual cycle. Based on these findings, we hypothesized that the decidua should also be able to secrete hCG. We examined the decidualized endometrium of patients with extrauterine pregnancies. Decidual specimens were obtained for mRNA extraction and paraffin embedding from 24 patients that were between weeks 6-11 of tubal pregnancy. Tissues were evaluated and classified into one of three groups based on the endometrial differentiation that took place prior to conception: (A) high secretory transformation, (B) diminished transformation with restricted decidualization and (C) inferior endometrial proliferation. Decidual gland hCG secretion was demonstrated immunohistochemically and by Western blotting. Serum hCG levels were higher (P < 0.0001) in patients from group A than group C. mRNA expression of both the beta subunit (beta-hCG) and alpha subunit (alpha-CG) was determined by RT-PCR. Furthermore, the specificity of beta-hCG amplification was confirmed by restriction enzymes. beta-LH amplification was not found. Moreover, the degree of endometrial transformation and the level of decidualization was found to correlate with hCG hormone staining and beta-hCG mRNA expression. hCG protein in the decidua was present in the glands of the compact layer and in the spongy layer, and was more pronounced in previously transformed high secretory endometrium than in inferior endometrium. In conclusion, this study provides the first evidence that hCG is produced in the decidua of patients during extrauterine pregnancies and might play a possible paracrine role.
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87
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Haid A, Kuehn T, Konstantiniuk P, Köberle-Wührer R, Knauer M, Kreienberg R, Zimmermann G. Shoulder-arm morbidity following axillary dissection and sentinel node only biopsy for breast cancer. EUROPEAN JOURNAL OF SURGICAL ONCOLOGY 2002; 28:705-10. [PMID: 12431466 DOI: 10.1053/ejso.2002.1327] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AIMS The purpose of this study was to examine the outcome of shoulder-arm morbidity in patients with breast cancer after various axillary staging procedures. We used a new specific summation score to compare conventional axillary node dissection (AD) and sentinel node only biopsy for postoperative shoulder-arm morbidity. METHODS Eighty-five patients undergoing conventional AD and 66 patients undergoing sentinel node biopsy were evaluated both subjectively (questionnaire) and objectively (clinical examination) for reduced muscle strength, limited range of motion, lymphedema and pain, dysesthesias and loss of sensitivity. The symptoms elicited were rated by their severity with a single summation score describing all symptoms reported. RESULTS Subjective evaluation of patients undergoing breast conserving surgery showed a highly significant difference in favor of SNB only (P< or =0.002). On clinical examination the outcome of patients with SNB only was also significantly or highly significantly better (difference in arm volume:P =0.007; difference in arm muscle strength: P=0.016; loss of sensitivity: P<0.001). Of a total score of 100 (=no symptoms), the mean for AD patients was 80.2 vs 92.8 for SNB patients (P=0.001). In patients undergoing total mastectomy the difference was only significant for pain sensations and total scores. CONCLUSIONS SNB appears to reduce morbidity. Summation scores are a suitable and practicable tool for describing the symptoms associated with axillary surgery.
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88
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Zimmermann G, Zullino D, Krenz S, Favrat B, Muller J, Zwahlen A, Besson J. [Rapid induction of withdrawal with opiate antagonists under anesthesia: an alternative to treatment of opiate dependence?]. PRAXIS 2002; 91:1651-1654. [PMID: 12405034 DOI: 10.1024/0369-8394.91.40.1651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Rapid induction of withdrawal by opiate antagonists under anesthesia is an opiate detoxification technique. This technique is useful to reduce intensity and duration of withdrawal. Therefore, this technique represents an alternative strategy in the treatment of opiate addicted patients. This paper attempts to present a brief history of this technique, and a critical review of related issues.
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89
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Haid A, Schrenk P, Roka S, Tausch C, Pichler-Gebhard B, Rudas M, Zimmermann G. The Importance of Sentinel Node Biopsy in Breast Surgery. Eur Surg 2002. [DOI: 10.1046/j.1563-2563.2002.02065.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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90
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Krenz S, Zullino D, Zimmermann G, Favrad B, Eichenberger C, Dieckman S, Besson J. Population survey of drug abusers attending a Swiss detoxification unit. Eur Psychiatry 2002. [DOI: 10.1016/s0924-9338(02)80910-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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91
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Pease LG, Niu CH, Zimmermann G. Solution conformation of cyclo-(Gly-Pro-Ser-D-Ala-Pro). Hydrogen-bonded reverse turns in cyclic pentapeptides. J Am Chem Soc 2002. [DOI: 10.1021/ja00495a031] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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92
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Kessler H, Moehrle H, Zimmermann G. Determination of the configuration and conformation of .alpha.-, .beta.-, and isotripiperideine carbon-13 nuclear magnetic resonance spectroscopy. J Org Chem 2002. [DOI: 10.1021/jo00421a013] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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93
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Zimmermann G, Haid A. Eingeladener Kommentar zu: "Schilddrusenchirurgie im Alter" (Acta Chir Austriaca 2001;33:288 - 292). Eur Surg 2001. [DOI: 10.1046/j.1563-2563.2001.01196.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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94
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Haid A, Tausch C, Lang A, Lutz J, Fritzsche H, Peschina W, Breitfellner G, Sega W, Aufschnaiter M, Sturn H, Zimmermann G. Is sentinel lymph node biopsy reliable and indicated after preoperative chemotherapy in patients with breast carcinoma? Cancer 2001; 92:1080-4. [PMID: 11571718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
BACKGROUND Many studies support the concept and accuracy of sentinel lymph node biopsy (SNB) for staging patients with breast carcinoma, which can be performed with low morbidity in lymph node negative patients. Preoperative chemotherapy (PC) plays an important role in the treatment of patients with operable breast carcinoma and is another approach with which to reduce radical surgery in patients with more advanced disease. It is of interest whether the sentinel lymph node accurately represents the axillary status after PC and, thus, whether the sentinel node concept can be applied to both groups. METHODS Thirty-three patients underwent SNB after chemotherapy and prior to axillary lymph node dissection. RESULTS The average greatest tumor dimension before chemotherapy (33 mm +/- 2 mm) was significantly larger (P = 0.000) than after therapy (20 mm +/- 3 mm). Histopathologic complete remission was seen in only three patients. One or two sentinel lymph nodes (average, 1.7 lymph nodes) were identified with certainty in 29 of 33 procedures and accurately predicted axillary lymph node status in all of these patients. Breast-conserving surgery was possible in 21 patients (64%), and axillary lymph nodes were involved in 22 patients (67%). CONCLUSIONS Even after patients undergo PC, SNB seems to be a reliable method for accurate staging of the axilla in those more advanced breast carcinoma. Thus, axillary dissection may be avoided in certain patients. Lymph node involvement seems to be likely in women with suspicious axillary findings before chemotherapy who have no visible sentinel lymph nodes on preoperative lymphosintigraphy and in patients without recurrent tumors. Further investigation of the SNB concept in this patient group should be evaluated in larger studies.
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95
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Zimmermann G. Invited Commentary to: "Analysis of Surgery-Related Complications in Thyroid Carcinoma - A German Prospective Multicentre Study with 275 Patients" (Acta Chir. Austriaca 2001;33:194 - 198). Eur Surg 2001. [DOI: 10.1046/j.1563-2563.2001.01167.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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96
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Zimmermann G. Editorial. Eur Surg 2001. [DOI: 10.1046/j.1563-2563.2001.01166.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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97
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Grams F, Brandstetter H, D'Alò S, Geppert D, Krell HW, Leinert H, Livi V, Menta E, Oliva A, Zimmermann G, Gram F, Brandstetter H, D'Alò S, Geppert D, Krell HW, Leinert H, Livi VMenta E, Oliva A, Zimmermann G. Pyrimidine-2,4,6-Triones: a new effective and selective class of matrix metalloproteinase inhibitors. Biol Chem 2001; 382:1277-85. [PMID: 11592410 DOI: 10.1515/bc.2001.159] [Citation(s) in RCA: 113] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Matrix metalloproteinases (MMPs) are a family of zinc endopeptidases that have been implicated in various disease processes. Different classes of MMP inhibitors, including hydroxamic acids, phosphinic acids and thiols, have been previously described. Most of these mimic peptides and most likely bind in a similar way to the corresponding peptide substrates. Here we describe pyrimidine-triones as a completely new class of metalloprotease inhibitors. While the pyrimidine-trione template is used as the zinc-chelating moiety, the substituents have been optimized to yield inhibitors comparable in their inhibition efficiency of matrix metalloproteinases to hydroxamic acid derivatives such as batimastat. However, they are much more specific for a small subgroup of MMPs, namely the gelatinases (MMP-2 and MMP-9).
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98
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Anziani OS, Zimmermann G, Guglielmone AA, Vazquez R, Suarez V. Avermectin resistance in Cooperia pectinata in cattle in Argentina. Vet Rec 2001; 149:58-9. [PMID: 11488345 DOI: 10.1136/vr.149.2.58] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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99
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Ion-Nedelcu N, Craciun D, Pitigoi D, Popa M, Hennessey K, Roure C, Aston R, Zimmermann G, Pelly M, Gay N, Strebel P. Measles elimination: a mass immunization campaign in Romania. Am J Public Health 2001; 91:1042-5. [PMID: 11441727 PMCID: PMC1446714 DOI: 10.2105/ajph.91.7.1042] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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100
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Wharton KA, Zimmermann G, Rousset R, Scott MP. Vertebrate proteins related to Drosophila Naked Cuticle bind Dishevelled and antagonize Wnt signaling. Dev Biol 2001; 234:93-106. [PMID: 11356022 DOI: 10.1006/dbio.2001.0238] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Wnt signals control cell fate decisions and orchestrate cell behavior in metazoan animals. In the fruit fly Drosophila, embryos defective in signaling mediated by the Wnt protein Wingless (Wg) exhibit severe segmentation defects. The Drosophila segment polarity gene naked cuticle (nkd) encodes an EF hand protein that regulates early Wg activity by acting as an inducible antagonist. Nkd antagonizes Wg via a direct interaction with the Wnt signaling component Dishevelled (Dsh). Here we describe two mouse and human proteins, Nkd1 and Nkd2, related to fly Nkd. The most conserved region among the fly and vertebrate proteins, the EFX domain, includes the putative EF hand and flanking sequences. EFX corresponds to a minimal domain required for fly or vertebrate Nkd to interact with the basic/PDZ domains of fly Dsh or vertebrate Dvl proteins in the yeast two-hybrid assay. During mouse development, nkd1 and nkd2 are expressed in multiple tissues in partially overlapping, gradient-like patterns, some of which correlate with known patterns of Wnt activity. Mouse Nkd1 can block Wnt1-mediated, but not beta-catenin-mediated, activation of a Wnt-dependent reporter construct in mammalian cell culture. Misexpression of mouse nkd1 in Drosophila antagonizes Wg function. The data suggest that the vertebrate Nkd-related proteins, similar to their fly counterpart, may act as inducible antagonists of Wnt signals.
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