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Bindoff L, Fiskerstrand T, Brahim DHB, Johansson S, M’zahem A, Haukanes B, Drouot N, Zimmermann J, Cole A, Vedeler C, Bredrup C, Assoum M, Tazir M, Klockgether T, Hamri A, Steen V, Boman H, Koenig M, Knappskog P. O.21 Genetic characterisation of PHARC – a novel syndrome resembling Refsum’s disease. Neuromuscul Disord 2010. [DOI: 10.1016/j.nmd.2010.07.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lifschitz J, Lourié H, Zimmermann J, ten Bokkel Huinink GA. Studien über Chromophorfunction IXZur Kenntniss des Chinonchromophors I:. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19240430407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Zimmermann J. Über einen Triterpendiol-Mono-Stearin-Säureester aus Coca-Früchten: (Erythroxylon novogranatense). ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19320511213] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Mohr HM, Zimmermann J, Röder C, Lenz C, Overbeck G, Grabhorn R. Separating two components of body image in anorexia nervosa using fMRI. Psychol Med 2010; 40:1519-1529. [PMID: 19917143 DOI: 10.1017/s0033291709991826] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Body image distortion is a key symptom of anorexia nervosa. In behavioral research two components of body image have been defined: attitudes towards the body and body size experience. Neuroimaging studies concerning own body image distortions in anorexia nervosa have revealed an inconsistent pattern of results and are constrained by the fact that no direct distinction between the different parts of body image has been made. METHOD The present study therefore set out to investigate the neural correlates of two parts of the own body image using functional magnetic resonance imaging (fMRI): satisfaction rating and size estimation for distorted own body photographs in patients with anorexia nervosa and controls. RESULTS Anorectic patients were less satisfied with their current body shape than controls. Patients further demonstrated stronger activation of the insula and lateral prefrontal cortex during the satisfaction rating of thin self-images. This indicates a stronger emotional involvement when patients are presented with distorted images close to their own ideal body size. Patients also overestimated their own body size. We were able to show complex differential modulations in activation of the precuneus during body size estimation in control and anorectic subjects. It could be speculated that a deficit in the retrieval of a multimodal coded body schema in precuneus/posterior parietal cortex is related to body size overestimation. CONCLUSIONS We were able to find specific behavioral responses and neural activation patterns for two parts of body image in anorexia nervosa and healthy controls. Thus, the present results underline the importance of developing research and therapeutic strategies that target the two different aspects of body image separately.
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Wolter A, Preuß U, Krischke N, Wong J, Langosch J, Zimmermann J. Recovery und Remission bei Schizophrenie. FORTSCHRITTE DER NEUROLOGIE-PSYCHIATRIE 2010; 78:468-74. [DOI: 10.1055/s-0029-1245495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Björkqvist M, Liljedahl M, Zimmermann J, Schollin J, Söderquist B. Colonization pattern of coagulase-negative staphylococci in preterm neonates and the relation to bacteremia. Eur J Clin Microbiol Infect Dis 2010; 29:1085-93. [DOI: 10.1007/s10096-010-0966-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Accepted: 05/06/2010] [Indexed: 10/19/2022]
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Zimmermann J, Vermehren F, Maiberger T, Wenke K, Wense AVD. Ein besonderer Fall von respiratorischer Insuffizienz bei einem Kind mit PEG und Z.n. Fundoplicatio. KLINISCHE PADIATRIE 2010. [DOI: 10.1055/s-0030-1261627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Preuss UW, Watzke AB, Zimmermann J, Wong JWM, Schmidt CO. Cannabis withdrawal severity and short-term course among cannabis-dependent adolescent and young adult inpatients. Drug Alcohol Depend 2010; 106:133-41. [PMID: 19783382 DOI: 10.1016/j.drugalcdep.2009.08.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Revised: 08/05/2009] [Accepted: 08/07/2009] [Indexed: 11/17/2022]
Abstract
OBJECTIVE While previous studies questioned the existence of a cannabis withdrawal syndrome (CWS), recent research provided increasing evidence of a number of clinical symptoms after cessation of frequent cannabis consumption. The aim of this study is to prospectively assess the course of CWS in a sample of cannabis-dependent inpatients and to provide an estimate of the proportion of subjects experiencing CWS. METHODS 118 subjects, aged 16-36 years, diagnosed with a cannabis dependence (DSM-IV, assessed by SCID I) were enrolled in the study. CWS was assessed prospectively over 10 days using a modified version of the Marijuana Withdrawal Checklist. Personality dimensions were assessed with the NEO-FFI. RESULTS 73 subjects (61.3%) completed all assessments over the observation period. Most symptoms peaked on day 1. Model-based analyses revealed a high and low intensity CWS group. Less than half of the patients belonged to the high intensity craving, psychological, or physical withdrawal symptoms group. Symptom intensity decreased almost linearly over time. Indicators of cannabis consumption intensity as well as personality dimensions, but not recalled withdrawal were related to membership in the high intensity CWS group. DISCUSSION A clinically relevant CWS may only be expected in a subgroup of cannabis-dependent patients. Most subjects with an elevated CWS experience physical and psychological symptoms. The small to negligible associations between recalled and prospectively assessed symptoms raise questions about the validity of the former approach.
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Zimmermann J, Junge C, Niemann J, Wong JWM, Preuss UW. Alcohol consumption and expectations of its effects in the border region of Pomerania: comparison of German and Polish adolescents. Eur Addict Res 2010; 16:170-8. [PMID: 20516692 DOI: 10.1159/000315128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The study focused on expectations of alcohol effects and patterns of consumption in German and Polish adolescents in the border region of Pomerania. In 2005/2006 a cross-sectional study was conducted in various schools. Adolescents with an average age of 14 from one German town (Greifswald) and two Polish towns (Szczecin and Kolobrzeg) were assessed using the ESPAD (European School Project on Alcohol and Other Drugs) questionnaire. Altogether 757 (444 Polish and 313 German) students in their 7th and 8th grades were assessed. Differences between alcohol consumption patterns and expectations between Germany and Poland, and relationships between alcohol consumption and anticipated alcohol effects were tested. There is a difference in patterns of consumption between the two countries. Among all adolescents, expectations of positive alcohol effects dominated, and the negative effects were estimated to be less likely. In a country-specific comparison, German students estimated the occurrence of positive as well as negative effects to be likely. Adolescents who consumed a lot of alcohol in both countries estimated the positive effects to be stronger. Adolescents are more focused on short-term experiences than the long-term consequences of alcohol consumption. The results show potential targets for prevention and intervention of future risky consumption and alcohol use disorders.
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Kirsch P, Zimmermann J, Schmitz A, Lis S, Gallhofer B, Reuter M, Windmann S, Strobel A. What you did to others you did to me? Brain activation during altruistic punishment in a first person versus a third party dictator game. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70769-4] [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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Zimmermann J, Müller GC, Moorthi C, Wense AVD. Kardialer neonataler Lupus erythematodes – Ursache einer zur Notsectio führenden Bradykardie bei einem unreifen Frühgeborenen. Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1223087] [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]
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Shakery K, Zimmermann J, Bahmer F. Erworbene reaktiv perforierende Dermatose im Patientengut der Dermatologischen Klinik Bremen 2003 – 2006. AKTUELLE DERMATOLOGIE 2008. [DOI: 10.1055/s-2008-1077578] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Watzke AB, Schmidt CO, Zimmermann J, Preuss UW. [Personality disorders in a clinical sample of Cannabis dependent young adults]. FORTSCHRITTE DER NEUROLOGIE-PSYCHIATRIE 2008; 76:600-5. [PMID: 18833505 DOI: 10.1055/s-2008-1038254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Cannabis addiction with comorbid personality disorders (PDs) is associated with a heavier individual burden of disease. Most previous studies focussed on singular disorders like borderline or antisocial PD, there is little data available on the full range of PD. Even less is known about the prevalence of PD with cannabis addiction in inpatient settings. The aim of this study is to investigate the frequency of PD and their relevance in treatment of young adult Cannabis-dependent inpatients. METHODS 99 adolescents and young adults diagnosed with Cannabis dependence according to DSM I, were investigated during their detoxification treatment in an addiction treatment ward. Personality disorders were assessed using the SCID II questionnaire. RESULTS The intensity of personality disorder traits was high in this inpatient sample. The probands showed a higher burden of disease from PDs other than the antisocial and Borderline PDs previously reported. Almost 90% of the subjects received the diagnosis of an antisocial PD, more than half had a paranoid and more than a third suffers from a Borderline PD. More than 35% of the sample had more than three PDs. There were no consistent relationships between PDs and concurrent consumption of other drugs, severity of drug addiction or delinquency. CONCLUSION There is evidence of PDs in almost all inpatient Cannabis-dependent adolescents and young adults. Diagnosis and treatment of these subjects has to provide not only addiction-specific approaches but also strategies to improve dysfunctional behaviour caused by personality disorder characteristics.
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Graf T, Zimmermann J, Niederstadt T, Ringelstein E, Dziewas R. Struma als Ätiologie einer multiplen nicht-eitrigen Sinusvenenthrombose mit Stauungsblutung. AKTUELLE NEUROLOGIE 2008. [DOI: 10.1055/s-0028-1086763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Stenger F, Maisels A, Stommel Y, Zimmermann J, Reichenauer G, Scherdel C. Herstellung und Charakterisierung von porösen Aerogelen auf Basis des Phenol-Formaldehyd-Systems. CHEM-ING-TECH 2008. [DOI: 10.1002/cite.200750778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Warnecke T, Teismann I, Meimann W, Olenberg S, Zimmermann J, Krämer C, Ringelstein EB, Schäbitz WR, Dziewas R. Assessment of aspiration risk in acute ischaemic stroke--evaluation of the simple swallowing provocation test. J Neurol Neurosurg Psychiatry 2008; 79:312-4. [PMID: 18281449 DOI: 10.1136/jnnp.2007.134551] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Aspiration is a common complication in acute stroke patients and is strongly associated with a poor outcome. Due to an insufficient sensitivity and specificity of clinical bedside tests, further refinements are needed to improve the accuracy of clinical aspiration screening in acute stroke. OBJECTIVE To assess the ability of the simple 2-step swallowing provocation test (SPT) to detect aspiration risk in acute stroke patients. METHODS 100 consecutive patients with first-ever stroke were examined by SPT and fiberoptic endoscopic evaluation of swallowing (FEES) within 72 hours of stroke onset. Using FEES as an objective instrumental technique to evaluate dysphagia, statistical measures representing the ability of SPT to detect aspiration risk were calculated. RESULTS The incidence of endoscopically proven aspiration risk was 81%. The 1st-step SPT had a sensitivity of 74.1% and a specificity of 100%. Although the 2nd-step SPT showed the same 100% specificity, sensitivity was significantly lower. False-negative results of SPT appeared predominantly in subjects exhibiting leakage of liquids to pyriform sinus without a pronounced delay in swallow onset. CONCLUSIONS In acute stroke patients with an impairment of the pharyngeal phase of swallowing, 1st-step SPT reliably detects aspiration risk. In patients with a sole or predominant impairment of the oral phase of swallowing and a relatively intact pharyngeal phase, SPT fails to detect aspiration risk sufficiently. In the latter group, FEES or additional clinical features more specifically indicating oral-phase pathology should be considered to accurately judge the patient's aspiration risk.
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Hesse S, Zimmermann J, von Seggern H, Ehrenberg H, Fuess H. The role of segregations and oxygen doping in the photostimulation mechanism of. RADIAT MEAS 2007. [DOI: 10.1016/j.radmeas.2007.01.057] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Keilhauer CN, Gal A, Sold JE, Zimmermann J, Netzer KO, Schramm L. Klinische Befunde eines Patienten mit Lowe-Syndrom und einer Splice Site Mutation im OCRL1-Gen. Klin Monbl Augenheilkd 2007; 224:207-9. [PMID: 17385124 DOI: 10.1055/s-2007-962947] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The oculo-cerebro-renal syndrome of Lowe (OCRL) is a rare X-chromosomal disorder characterised by the triad of congenital cataracts, renal tubular dysfunction, and mental retardation. Typically complete opacification and discoid deformation of the lenses are seen, indicating a developmental defect in early embryogenesis. We report on a 35-year-old patient with a mild Lowe syndrome phenotype including incomplete lenticular opacities. Clinical findings suggest that the gene product of the mutated allele (IVS19 + 1G > A) identified in the patient exhibits some residual function.
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Zimmermann J, Metze D, Niederstadt TU, Ringelstein EB, Dziewas R. Neuro-Sweet-Syndrom – ein Fallbericht. AKTUELLE NEUROLOGIE 2007. [DOI: 10.1055/s-2007-987925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Voorzanger-Rousselot N, Juillet F, Mareau E, Zimmermann J, Kalebic T, Garnero P. Association of 12 serum biochemical markers of angiogenesis, tumour invasion and bone turnover with bone metastases from breast cancer: a crossectional and longitudinal evaluation. Br J Cancer 2006; 95:506-14. [PMID: 16880790 PMCID: PMC2360666 DOI: 10.1038/sj.bjc.6603285] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Complex biological pathways including angiogenesis, invasion, osteoclastic activation and bone matrix degradation are involved in the formation of bone metastasis (BM). The aim of our study was to investigate the cross-sectional and longitudinal associations of a panel of 12 serum biochemical markers reflecting biological pathways underlying BM development. In a cross-sectional study, we investigated 29 patients with primary breast carcinoma without BM (BC/BM-), 28 patients with breast carcinoma and BM (BC/BM+) and 15 healthy women. In longitudinal analyses, we investigated 34 patients for whom serum was obtained a two different time points: at the time of primary BC diagnosis and after a median time of 3 years. During this follow-up, 15 patients developed BM, whereas the other 19 remained free of BM. In patients who developed BM, the second samples were obtained before BM was documented by bone scan. The cross-sectional analyses have shown all biochemical markers to be significantly elevated in patients with BM, when compared to the patients without BM and healthy controls, except TGFbeta1 that was significantly decreased. Multivariable analyses showed that only the bone resorption markers TRACP 5b, CTX and ICTP, and the marker of angiogenesis VEGF were independently associated with BM. Those markers correctly distinguished 85% of BC patients with or without BM from normal individuals. Longitudinal analyses showed that patients with primary BC who developed BM during follow-up had higher levels of TRACP5b (+95%, P=0.08) at the time of primary diagnosis, those patients had also a higher increases of ICTP (P=0.006), MMP-7 (P=0.004) and TIMP-1 (P=0.017) during follow-up than patients who did not progress toward bone metastasis. This study provides evidence of increase and interrelationship of circulating markers of angiogenesis, invasion and bone resorption in patients with BC with and without BM. Markers of bone resorption have the highest independent diagnostic value for detecting and potentially predicting BM in breast carcinoma patients.
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Priolo C, Tang D, Brahmandam M, Benassi B, Sicinska E, Ogino S, Farsetti A, Porrello A, Febbo PG, Zimmermann J, Loda MF. USP2a is an oncogenic isopeptidase and a potential target in prostate cancer. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.14522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
14522 Background: De-ubiquitinating enzymes (isopeptidases) remove ubiquitin side chains prior to degradation by the proteosome thus stabilizing their protein targets. We have identified a novel androgen regulated isopeptidase, USP2a, and demonstrated that it binds and prolongs the half-life of fatty acid synthase (FAS), a key enzyme in lipid metabolism of tumor cells. Methods: We determined whether USP2a has oncogenic properties in vitro and in vivo. Wild-type and catalytically inactive USP2a were introduced in immortalized normal prostate epithelial cells (AR-iPrECs). Clonogenicity assays and apoptosis induction by chemotherapeutic agents were performed on these cells. Anti-USP2a siRNA were transfected in normal and transformed (LNCaP, DU145 and PC-3) prostate cell lines. Oncogenicity in vivo was shown by s.c. injection of NIH3T3-USP2a cells in nude mice. Furthermore, USP2a mRNA expression and gene microarrays were tested in 52 human prostate adenocarcinomas. Results: Wild-type USP2a overexpression in AR-iPrEC cells resulted in a significant increase in number and size of colonies compared to those obtained in parental cells. Growth in soft agar was significantly enhanced as well. Silencing of USP2a in LNCAP and DU145 cells resulted in a strong apoptotic effect, evaluated by FACS analysis and cleaved-PARP expression. The role of this isopeptidase in apoptosis regulation was confirmed on AR-iPrEC-USP2a cells, that showed resistance to apoptosis induced by cisplatin and taxol. Importantly, USP2a overexpression was able to transform NIH3T3 cells, generating greater than or equal to 0.5 cm subcutaneous tumors in 12/12 nude mice within 3 weeks, while none of the negative controls grew. USP2a mRNA was overexpressed in 39% of human prostate cancers, showing 1.6–104 (median 5.48) fold induction relative to normal tissues by qRT-PCR. Gene expression profiling of the same tumors revealed specific signatures in USP2a-overexpressing tumors. Conclusions: Our results demonstrate that USP2a behaves as an oncogene in vitro and in vivo and is overexpressed in organ-confined prostate cancer. These data strongly suggest that this isopeptidase is a potential drug target in prostate cancer. [Table: see text]
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Preuss UW, Koller G, Bottlender M, Schultz G, Barnow S, Zimmermann J, Soyka M. [Suicide attempts in alcohol dependents: clinical characteristics und differentiation of the applied methods]. FORTSCHRITTE DER NEUROLOGIE-PSYCHIATRIE 2006; 74:77-84. [PMID: 16485219 DOI: 10.1055/s-2005-870916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Suicidal behavior is common in alcohol-dependent subjects. In terms of methods used, violent and non-violent suicide attempts can be distinguished. To confirm the validity of this distinction from a clinical point of view a sample of inpatient alcohol-dependent subjects is explored. METHODS Subjects with a diagnosis of alcohol dependence according to DSM-IV and ICD-10 who took part in an inpatient withdrawal treatment program were included. Characteristics of alcohol dependence and suicidal behavior as well as lifetime diagnosis of other psychiatric disorders were assessed using the SSAGA. Clinical syndromes, personality and temperament were obtained by MMPI-2, TCI and NEO-FFI. RESULTS Of the 182 included patients, alcoholics with a history of suicide attempts reported more depressive pathology and a personality profile characterized by emotional instability, psychopathy and decreased self-control. DISCUSSION Distinguishing alcohol dependent suicide attempters according to methods used, no significant differences between violent and non-violent methods could be found. Therefore the clinical validity of this distinction could not be confirmed.
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Radetzki U, Leser U, Schulze-Rauschenbach SC, Zimmermann J, Lüssem J, Bode T, Cremers AB. Adapters, shims, and glue--service interoperability for in silico experiments. Bioinformatics 2006; 22:1137-43. [PMID: 16481335 DOI: 10.1093/bioinformatics/btl054] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
MOTIVATION Computationally, in silico experiments in biology are workflows describing the collaboration of people, data and methods. The Grid and Web services are proposed to be the next generation infrastructure supporting the deployment of bioinformatics workflows. But the growing number of autonomous and heterogeneous services pose challenges to the used middleware w.r.t. composition, i.e. discovery and interoperability of services required within in silico experiments. In the IRIS project, we handle the problem of service interoperability by a semi-automatic procedure for identifying and placing customizable adapters into workflows built by service composition. RESULTS We show the effectiveness and robustness of the software-aided composition procedure by a case study in the field of life science. In this study we combine different database services with different analysis services with the objective of discovering required adapters. Our experiments show that we can identify relevant adapters with high precision and recall.
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Schmiedl A, Zimmermann J, Scherberich JE, Fischer P, Dübel S. Recombinant variants of antibody 138H11 against human gamma-glutamyltransferase for targeting renal cell carcinoma. Hum Antibodies 2006; 15:81-94. [PMID: 17065739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The monoconal antibody 138H11 recognizes human renal gamma-glutamyltransferase (GGT), an antigen shown to allow targeting primary and metastatic renal cell carcinoma (RCC). We determined the primary structure of the antigen binding region of mAb 138H11 and generated several different recombinant antibody variants. First, monomeric single-chain Fv antibody fragments, diabodies and triabodies were obtained by constructing linker variants consisting of 18, 10, 8, 5, 3, 2, 1 and zero amino acid residues, resulting in significant differences in yield and molecular architecture. Second, two variants of disulphide bond-stabilised Fv fragments (dsFvs) were generated using two different pairs of complementary framework amino acid positions of VH and VL for disulphide stabilisation. The binding activities of diabodies to human GGT located on its tissue decreased when using shorter linker lengths. The scFv dimer containing a 3 amino acid residue linker peptide and one of the dsFv variants were not functional. Further, the work paves the way for generating new effector constructs and a systematic optimisation of the pharmacokinetics of this tumor targeting antibody by offering variants with a broad range of valencies and molecular masses.
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