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Madre M, Fuentes-Claramonte P, Palau P, Sáez N, Moro N, Blanch C, Verdolini N, Garcia-Leon MA, Feria I, Munuera J, Sarró S, Raduà J, McKenna P, Salvador R, Pomarol-Clotet E. Brain correlates of impaired goal management in bipolar mania. Psychol Med 2023; 53:1021-1029. [PMID: 35758215 PMCID: PMC9976001 DOI: 10.1017/s0033291721002452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 05/03/2021] [Accepted: 06/02/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND Although executive impairment has been reported in mania, its brain functional correlates have been relatively little studied. This study examined goal management, believed to be more closely related to executive impairment in daily life than other executive tasks, using a novel functional magnetic resonance imaging (fMRI) paradigm in patients in this illness phase. METHODS Twenty-one currently manic patients with bipolar disorder and 30 matched healthy controls were scanned while performing the Computerized Multiple Elements Test (CMET). This requires participants to sequentially play four simple games, with transition between games being made either voluntarily (executive condition) or automatically (control condition). RESULTS CMET performance was impaired in the manic patients compared to the healthy controls. Manic patients failed to increase activation in the lateral frontal, cingulate and inferior parietal cortex when the executive demands of the task increased, while this increase was observed in the healthy controls. Activity in these regions was associated with task performance. CONCLUSIONS Manic patients show evidence of impaired goal management, which is associated with a pattern of reduced medial and lateral frontal and parietal activity.
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Affiliation(s)
- Mercé Madre
- FIDMAG Hermanas Hospitalarias Research Foundation, Barcelona, Spain
- Addictive Behaviours Unit, Psychiatry Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | | | - Pol Palau
- FIDMAG Hermanas Hospitalarias Research Foundation, Barcelona, Spain
- Benito Menni CASM, Barcelona, Spain
- Fundació Privada Hospital Asil de Granollers, Granollers, Spain
- Universitat de Barcelona, Barcelona, Spain
| | - Naia Sáez
- Hospital de Sant Rafael, Barcelona, Spain
| | | | | | - Norma Verdolini
- Bipolar Disorders and Depressive Unit, Institute of Neuroscience, Hospital Clínic, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CIBERSAM, Barcelona, Spain
| | | | - Isabel Feria
- FIDMAG Hermanas Hospitalarias Research Foundation, Barcelona, Spain
- Benito Menni CASM, Barcelona, Spain
| | - Josep Munuera
- Unitat de Diagnòstic per la Imatge, Fundació de Recerca, Hospital de Sant Joan de Déu, Barcelona, Spain
| | - Salvador Sarró
- FIDMAG Hermanas Hospitalarias Research Foundation, Barcelona, Spain
- CIBERSAM, Barcelona, Spain
| | - Joaquim Raduà
- Imaging of Mood- and Anxiety-Related Disorders (IMARD) Group, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CIBERSAM, Barcelona, Spain
- Early Psychosis: Interventions and Clinical-detection (EPIC) Lab, Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
- Department of Clinical Neuroscience, Centre for Psychiatric Research and Education, Karolinska Institutet, Stockholm, Sweden
| | - Peter McKenna
- FIDMAG Hermanas Hospitalarias Research Foundation, Barcelona, Spain
- CIBERSAM, Barcelona, Spain
| | - Raymond Salvador
- FIDMAG Hermanas Hospitalarias Research Foundation, Barcelona, Spain
- CIBERSAM, Barcelona, Spain
| | - Edith Pomarol-Clotet
- FIDMAG Hermanas Hospitalarias Research Foundation, Barcelona, Spain
- CIBERSAM, Barcelona, Spain
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Madre M, Canales-Rodríguez EJ, Ortiz-Gil J, Murru A, Torrent C, Bramon E, Perez V, Orth M, Brambilla P, Vieta E, Amann BL. Neuropsychological and neuroimaging underpinnings of schizoaffective disorder: a systematic review. Acta Psychiatr Scand 2016; 134:16-30. [PMID: 27028168 DOI: 10.1111/acps.12564] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/08/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The neurobiological basis and nosological status of schizoaffective disorder remains elusive and controversial. This study provides a systematic review of neurocognitive and neuroimaging findings in the disorder. METHODS A comprehensive literature search was conducted via PubMed, ScienceDirect, Scopus and Web of Knowledge (from 1949 to 31st March 2015) using the keyword 'schizoaffective disorder' and any of the following terms: 'neuropsychology', 'cognition', 'structural neuroimaging', 'functional neuroimaging', 'multimodal', 'DTI' and 'VBM'. Only studies that explicitly examined a well defined sample, or subsample, of patients with schizoaffective disorder were included. RESULTS Twenty-two of 43 neuropsychological and 19 of 51 neuroimaging articles fulfilled inclusion criteria. We found a general trend towards schizophrenia and schizoaffective disorder being related to worse cognitive performance than bipolar disorder. Grey matter volume loss in schizoaffective disorder is also more comparable to schizophrenia than to bipolar disorder which seems consistent across further neuroimaging techniques. CONCLUSIONS Neurocognitive and neuroimaging abnormalities in schizoaffective disorder resemble more schizophrenia than bipolar disorder. This is suggestive for schizoaffective disorder being a subtype of schizophrenia or being part of the continuum spectrum model of psychosis, with schizoaffective disorder being more skewed towards schizophrenia than bipolar disorder.
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Affiliation(s)
- M Madre
- FIDMAG Research Foundation Germanes Hospitalàries, CIBERSAM, Barcelona, Spain
| | | | - J Ortiz-Gil
- FIDMAG Research Foundation Germanes Hospitalàries, CIBERSAM, Barcelona, Spain.,Hospital General de Granollers, Granollers, Catalonia, Spain
| | - A Murru
- Bipolar Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, Barcelona, Catalonia, Spain
| | - C Torrent
- Bipolar Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, Barcelona, Catalonia, Spain
| | - E Bramon
- Division of Psychiatry, University College London, London, UK
| | - V Perez
- Institut de Neuropsiquiatria i Addiccions, Hospital del Mar, Barcelona, Spain.,CIBERSAM, IMIM (Institut Hospital del Mar d'Investigacions Mèdiques), Psiquiatria, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - M Orth
- Department of Neurology, Ulm University, Ulm, Germany
| | - P Brambilla
- Department of Neurosciences and Mental Health, Psychiatric Clinic, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy.,Department of Psychiatry and Behavioural Sciences, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - E Vieta
- Bipolar Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, Barcelona, Catalonia, Spain
| | - B L Amann
- FIDMAG Research Foundation Germanes Hospitalàries, CIBERSAM, Barcelona, Spain
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Amann BL, Canales-Rodríguez EJ, Madre M, Radua J, Monte G, Alonso-Lana S, Landin-Romero R, Moreno-Alcázar A, Bonnin CM, Sarró S, Ortiz-Gil J, Gomar JJ, Moro N, Fernandez-Corcuera P, Goikolea JM, Blanch J, Salvador R, Vieta E, McKenna PJ, Pomarol-Clotet E. Brain structural changes in schizoaffective disorder compared to schizophrenia and bipolar disorder. Acta Psychiatr Scand 2016; 133:23-33. [PMID: 25968549 PMCID: PMC5029760 DOI: 10.1111/acps.12440] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/20/2015] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Brain structural changes in schizoaffective disorder, and how far they resemble those seen in schizophrenia and bipolar disorder, have only been studied to a limited extent. METHOD Forty-five patients meeting DSM-IV and RDC criteria for schizoaffective disorder, groups of patients with 45 matched schizophrenia and bipolar disorder, and 45 matched healthy controls were examined using voxel-based morphometry (VBM). RESULTS Analyses comparing each patient group with the healthy control subjects found that the patients with schizoaffective disorder and the patients with schizophrenia showed widespread and overlapping areas of significant volume reduction, but the patients with bipolar disorder did not. A subsequent analysis compared the combined group of patients with the controls followed by extraction of clusters. In regions where the patients differed significantly from the controls, no significant differences in mean volume between patients with schizoaffective disorder and patients with schizophrenia in any of five regions of volume reduction were found, but mean volumes in the patients with bipolar disorder were significantly smaller in three of five. CONCLUSION The findings provide evidence that, in terms of structural gray matter brain abnormality, schizoaffective disorder resembles schizophrenia more than bipolar disorder.
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Affiliation(s)
- B L Amann
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- CIBERSAM, Madrid, Spain
| | - E J Canales-Rodríguez
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- CIBERSAM, Madrid, Spain
| | - M Madre
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- Departament de Psiquiatria i Medicina Legal, Doctorat de Psiquiatria i Psicologia Clínica, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - J Radua
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- Department of Psychosis Studies, Institute of Psychiatry, King's College London, London, UK
| | - G Monte
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
| | - S Alonso-Lana
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
| | - R Landin-Romero
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- CIBERSAM, Madrid, Spain
| | - A Moreno-Alcázar
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
| | - C M Bonnin
- Hospital Benito Menni CASM, Sant Boi, Spain
| | - S Sarró
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- CIBERSAM, Madrid, Spain
| | - J Ortiz-Gil
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- Hospital General de Granollers, Granollers, Spain
| | - J J Gomar
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
| | - N Moro
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- Hospital Benito Menni CASM, Sant Boi, Spain
| | | | - J M Goikolea
- Bipolar Disorders Unit, Hospital Clínic, University of Barcelona, IDIBAPS, Barcelona, Spain
| | - J Blanch
- Department of Radiology, Hospital San Juan de Deú, Barcelona, Spain
| | - R Salvador
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- CIBERSAM, Madrid, Spain
| | - E Vieta
- CIBERSAM, Madrid, Spain
- Bipolar Disorders Unit, Hospital Clínic, University of Barcelona, IDIBAPS, Barcelona, Spain
| | - P J McKenna
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- CIBERSAM, Madrid, Spain
| | - E Pomarol-Clotet
- FIDMAG Research Foundation Germanes Hospitalàries, Barcelona, Spain
- CIBERSAM, Madrid, Spain
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Madre M, Pomarol-Clotet E, McKenna P, Radua J, Ortiz-Gil J, Panicali F, Goikolea JM, Vieta E, Sarró S, Salvador R, Amann BL. Brain functional abnormality in schizo-affective disorder: an fMRI study. Psychol Med 2013; 43:143-153. [PMID: 22583916 DOI: 10.1017/s0033291712000943] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Schizo-affective disorder has not been studied to any significant extent using functional imaging. The aim of this study was to examine patterns of brain activation and deactivation in patients meeting strict diagnostic criteria for the disorder. METHOD Thirty-two patients meeting research diagnostic criteria (RDC) for schizo-affective disorder (16 schizomanic and 16 schizodepressive) and 32 matched healthy controls underwent functional magnetic resonance imaging (fMRI) during performance of the n-back task. Linear models were used to obtain maps of activations and deactivations in the groups. RESULTS Controls showed activation in a network of frontal and other areas and also deactivation in the medial frontal cortex, the precuneus and the parietal cortex. Schizo-affective patients activated significantly less in prefrontal, parietal and temporal regions than the controls, and also showed failure of deactivation in the medial frontal cortex. When task performance was controlled for, the reduced activation in the dorsolateral prefrontal cortex (DLPFC) and the failure of deactivation of the medial frontal cortex remained significant. CONCLUSIONS Schizo-affective disorder shows a similar pattern of reduced frontal activation to schizophrenia. The disorder is also characterized by failure of deactivation suggestive of default mode network dysfunction.
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Affiliation(s)
- M Madre
- FIDMAG Germanes Hospitalàries, Spain
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Amann B, Gomar JJ, Ortiz-Gil J, McKenna P, Sans-Sansa B, Sarró S, Moro N, Madre M, Landin-Romero R, Vieta E, Goikolea JM, Salvador R, Pomarol-Clotet E. Executive dysfunction and memory impairment in schizoaffective disorder: a comparison with bipolar disorder, schizophrenia and healthy controls. Psychol Med 2012; 42:2127-2135. [PMID: 22357405 DOI: 10.1017/s0033291712000104] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Deficits in memory and executive performance are well-established features of bipolar disorder and schizophrenia. By contrast, data on cognitive impairment in schizoaffective disorder are scarce and the findings are conflicting. METHOD We used the Wechsler Memory Scale (WMS-III) and the Behavioural Assessment of the Dysexecutive Syndrome (BADS) to test memory and executive function in 45 schizophrenic patients, 26 schizomanic patients and 51 manic bipolar patients in comparison to 65 healthy controls. The patients were tested when acutely ill. RESULTS All three patient groups performed significantly more poorly than the controls on global measures of memory and executive functioning, but there were no differences among the patient groups. There were few differences in memory and executive function subtest scores within the patient groups. There were no differences in any test scores between manic patients with and without psychotic symptoms. CONCLUSIONS Schizophrenic, schizomanic and manic patients show a broadly similar degree of executive and memory deficits in the acute phase of illness. Our results do not support a categorical differentiation across different psychotic categories with regard to neuropsychological deficits.
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Affiliation(s)
- B Amann
- FIDMAG Germanes Hospitaláries Barcelona, Spain.
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Affiliation(s)
- M. Madre
- a Institute of Organic Synthesis, Latvian Academy of Sciences , 226006 , Riga , Latvia, USSR
| | - R. Zhuk
- a Institute of Organic Synthesis, Latvian Academy of Sciences , 226006 , Riga , Latvia, USSR
| | - M. Lidaks
- a Institute of Organic Synthesis, Latvian Academy of Sciences , 226006 , Riga , Latvia, USSR
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Pascual JC, Madre M, Soler J, Barrachina J, Campins MJ, Alvarez E, Pérez V. Injectable atypical antipsychotics for agitation in borderline personality disorder. Pharmacopsychiatry 2006; 39:117-8. [PMID: 16721704 DOI: 10.1055/s-2006-941489] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Agitation is relatively common among Borderline Personality Disorder (BPD) patients in Psychiatric Emergency Services (PES). New injectable atypical antipsychotics are indicated for treatment in agitated psychotic or maniac patients but not for agitated BDP patients. Twenty agitated BPD patients were treated with intramuscular atypical antipsychotics (olanzapine or ziprasidone). Results suggest intramuscular atypical antipsychotics may be effective, fast and safe for treating acute BPD patients.
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8
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Kovalenko L, Madre M, Lindau S, Bohley C, Panchenko N, Meister WV, Zhuk R, Hoffmann S. Chemical Synthesis and Properties of Long-Chain Alkoxymethyl-Nucleobase Derivatives. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/07328319808004719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- L. Kovalenko
- a institute of Organic Synthesis , Aizkraukles 21, LV-1006 , Riga , Latvia Phone: Fax: E-mail:
| | - M. Madre
- a institute of Organic Synthesis , Aizkraukles 21, LV-1006 , Riga , Latvia Phone: Fax: E-mail:
| | - S. Lindau
- b Martin Luther University Halle-Wittenberg, Institute of Biochemistry , D-06120 , Halle , (Saale), Germany Phone: Fax: E-mail:
| | - C. Bohley
- b Martin Luther University Halle-Wittenberg, Institute of Biochemistry , D-06120 , Halle , (Saale), Germany Phone: Fax: E-mail:
| | - N. Panchenko
- a institute of Organic Synthesis , Aizkraukles 21, LV-1006 , Riga , Latvia Phone: Fax: E-mail:
| | - W.-V. Meister
- b Martin Luther University Halle-Wittenberg, Institute of Biochemistry , D-06120 , Halle , (Saale), Germany Phone: Fax: E-mail:
| | - R. Zhuk
- a institute of Organic Synthesis , Aizkraukles 21, LV-1006 , Riga , Latvia Phone: Fax: E-mail:
| | - S. Hoffmann
- b Martin Luther University Halle-Wittenberg, Institute of Biochemistry , D-06120 , Halle , (Saale), Germany Phone: Fax: E-mail:
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Pascual JC, Madre M, Puigdemont D, Oller S, Corripio I, Díaz A, Faus G, Perez V, Alvarez E. [A naturalistic study: 100 consecutive episodes of acute agitation in a psychiatric emergency department]. Actas Esp Psiquiatr 2006; 34:239-44. [PMID: 16823684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
INTRODUCTION Psychomotor agitation is a common event in psychiatric emergency services (PES) with a prevalence of approximately 10 %. There is no general consensus on to how to manage psychomotor agitation; benzodiazepines, typical antipsychotics and now atypical antipsychotics have demonstrated similar efficacy. The aim of our study was to describe the epidemiology and clinical management of agitation in "real-life" in a psychiatric emergency service. METHODS A naturalistic study was performed in acutely agitated patients recruited consecutively in a psychiatric emergency service. Demographics, clinical and therapeutic characteristics were analyzed. Efficacy was assessed by the Excitement Component of the Positive and Negative Syndrome Scale (PANSS-EC) and the Agitation-Calmness Evaluation Scale (ACES). Pragmatic variables such as the need for second pharmacological intervention and the need for physical restraints were assessed. RESULTS The study included 100 patients with psychomotor agitation. Mean age was 36.2 % and 54% were women. The most prevalent diagnoses were psychotic disorder (48 %) and personality disorder (24 %). Physical restraint was required in 39 % of patients and 52 % accepted oral treatment. Haloperidol was the most frequent oral treatment and olanzapine was the most frequent intramuscular treatment. CONCLUSIONS A naturalistic approach provides data based on clinical reality in psychiatric emergency services. Strict research designs of clinical trials of efficacy imply sample selection biases and are generally distanced from the clinical reality. Atypical antipsychotics have become the first-line treatment in acute agitation
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Affiliation(s)
- J C Pascual
- Servicio de Psiquiatría, Hospital de la Santa Creu i Sant Pau, Barcelona
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Meister WV, Lindau S, Hauser AL, Bohley C, Gromann U, Naumann S, Madre M, Kovalenko L, Bischoff G, Zhuk R, Hoffmann S. Biomesogenic matrix systems. J Biomol Struct Dyn 2000; 18:385-92. [PMID: 11149515 DOI: 10.1080/07391102.2000.10506675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The bifunctionally reactive nucleoside and distant nucleoside analogs adenosine (Ado), S-[(adenine-9-yl)methoxyethyl]-L-cysteine (Na-salt) (cysA) and 9-vinyladenine (vA) in aqueous solutions assemble on complementary polyuridylic acid templates to form complex lyomesophases. The systems are investigated by polarizing microscopy, differential scanning calorimetry (DSC) and 1H- and 31P-nmr spectroscopies, assisted by molecular modeling studies. The results indicate the importance of biomesogenic (pre)ordering in nucleic acid native and artificial matrix reactions.
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Affiliation(s)
- W V Meister
- Martin Luther University Halle-Wittenberg, Institute of Biochemistry, Saale, Germany.
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Meister WV, Lindau S, Bohley C, Gromann U, Madre M, Kovalenko L, Bischoff G, Zhuk R, Hoffmann S. Self-assembly and lyomesophases formed by long-chain alkoxymethyl-nucleobase derivatives. Nucleosides Nucleotides Nucleic Acids 2000; 19:1185-91. [PMID: 10999256 DOI: 10.1080/15257770008035039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Amphiphilic complementary nucleobase derivatives, containing n-octadecyloxymethyl substituents at the N1 position of pyrimidine and N9 of purine, dissolved in chloroform form non-specific lyotropic mesophases, which were analyzed by optical polarizing microscopy. Molecular modeling studies visualize hypothetical horizontal and vertical nucleobase hydrogen-bonding and stacking arrangements, as well as aliphatic long-chain interstrand interaction.
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Affiliation(s)
- W V Meister
- Martin Luther University Halle-Wittenberg, Institute of Biochemistry, Halle, Saale, Germany.
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Poluektova L, Madre M, Zhuk R, Osna N, Somashenkova L, Zvirbliene A, Socnev A, Khan MM. Immunoregulatory effects of N9-benzyl- and N7-benzyl-8-bromoguanines. Int J Immunopharmacol 1999; 21:777-92. [PMID: 10576622 DOI: 10.1016/s0192-0561(99)00043-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In this study we investigated the effects of two guanine derivatives, 9-benzyl- (I) and 7-benzyl-8-bromoguanines (II) on the proliferation of human T-cell leukemia and T-cell lymphoma, normal human peripheral blood mononuclear cells (PBMC), and mouse Th1 (pGL10) and Th2 (D10.G4.1) clones. We also assessed their effects on cytokine production (IL-3, IL-10 and IFN-gamma) in PBMC, T-cell lymphoma, HUT78 (IL-2), and murine Th1 (IL-2) and Th2 (IL-4 and IL-5) clones. These compounds were synthesize as analog of known inhibitors of purine nucleoside phosphorylase (PNP) 8-amino-9-benzylguanine. These compounds suppressed proliferation of human leukemia MOLT-4 cells, human cutaneous lymphoma HUT78 cells and normal PMBC. Compound II was a significantly more potent inhibitor than compound I. Exogenous recombinant human IL-2 reversed the anti-proliferative effects of both compounds on HUT78 cells. These compounds had low toxicity to human EBV-transformed B-lymphocytes. Both compounds suppressed the production of IL-2 by activated human HUT78 cells, IFN-gamma by PBMC and did not affect IL-3 and IL-10 production in PBMC. Compound I inhibited anti-CD3-activated IL-2 secretion from the murine Th1 clone. The murine Th2 clone was less sensitive to both compounds as compared with Thl. The production of IL-4 and IL-5 by this clone was not suppressed. Thus, it has been shown that not only 9-substituted guanines but also their 7-isomers selectively inhibit T-cell functions and both selectively inhibit Th1-related cytokines secretion.
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Affiliation(s)
- L Poluektova
- Department of Pharmaceutical and Administrative Sciences, Creighton University, School of Pharmacy and AHP, Omaha, NE 68178, USA
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