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Munera-Campos M, Chicharro P, Gonzalez Quesada A, Florez Menendez A, de la Cueva Dovao P, Gimenez Arnau AM, Gilaberte Calzada Y, Rodríguez Serna M, Montero T, Silvestre Salvador JF, Elosua González M, Del Alcazar E, Santamaría C, Sánchez-Pérez J, Carretero Hernández G, Batalla Cebey A, Jin Suh Oh H, Mauleón Fernández C, Curto Barredo L, Bertolín M, Navarro Bielsa A, Ballano Ruiz A, Botella Estrada R, Arias Santiago S, Betlloch I, Roustan Gullón G, Rosell Díaz A, Descalzo MÁ, García-Doval I, Carrascosa JM. [[Translated article]]BIOBADATOP Spanish Atopic Dermatitis Registry: Description and Early Findings. Actas Dermosifiliogr 2023:S0001-7310(23)00349-6. [PMID: 37172898 DOI: 10.1016/j.ad.2023.05.010] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND In recent years, remarkable improvements in our understanding of atopic dermatitis (AD) have revolutionized treatment perspectives, but access to reliable data from clinical practice is essential. MATERIALS AND METHOD The Spanish Atopic Dermatitis Registry, BIOBADATOP, is a prospective, multicenter database that collects information on patients of all ages with AD requiring systemic therapy with conventional or novel drugs. We analyzed the registry to describe patient characteristics, diagnoses, treatments, and adverse events (AEs). RESULTS We studied data entries for 258 patients who had received 347 systemic treatments for AD. Treatment was discontinued in 29.4% of cases, mostly due to a lack of effectiveness (in 10.7% of cases). A total of 132 AEs were described during follow-up. Eighty-six AEs (65%) were linked to a systemic treatment, most commonly dupilumab (39 AEs) and cyclosporine (38 AEs). The most common AEs were conjunctivitis (11 patients), headache (6), hypertrichosis (5), and nausea (4). There was 1 severe AE (acute mastoiditis) associated with cyclosporine. CONCLUSIONS Initial findings on AEs from the Spanish BIOBADATOP registry are limited by short follow-up times precluding comparisons or calculation of crude and adjusted incidence rates. At the time of our analysis, no severe AEs had been reported for novel systemic therapies. BIOBADATOP will help answer questions on the effectiveness and safety of conventional and novel systemic therapies in AD.
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Affiliation(s)
- M Munera-Campos
- Servicio de Dermatología. Hospital Universitari Germans Trias i Pujol. Universitat Autònoma de Barcelona. Germans Trias i Pujol Research Institute (IGTP). Badalona, Barcelona, Spain.
| | - P Chicharro
- Servicio de Dermatología. Hospital Universitario de la Princesa, Madrid, Spain
| | - A Gonzalez Quesada
- Servicio de Dermatología. Hospital Universitario de Gran Canaria Doctor Negrín, Las Palmas de Gran Canaria, Spain
| | - A Florez Menendez
- Servicio de Dermatología. Complejo Hospitalario de Pontevedra, Pontevedra, Spain
| | - P de la Cueva Dovao
- Servicio de Dermatología. Hospital Universitario Infanta Leonor, Madrid, Spain
| | - A M Gimenez Arnau
- Servicio de Dermatología. Hospital del Mar-Parc de Salut Mar, Barcelona, Spain
| | - Y Gilaberte Calzada
- Servicio de Dermatología. Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - M Rodríguez Serna
- Servicio de Dermatología. Hospital Universitario y Politécnico la Fe, Valencia, Spain
| | - T Montero
- Servicio de Dermatología. Hospital Universitario Virgen de las Nieves, Granada, Spain
| | | | - M Elosua González
- Servicio de Dermatología. Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - E Del Alcazar
- Servicio de Dermatología. Hospital Universitari Germans Trias i Pujol. Universitat Autònoma de Barcelona. Germans Trias i Pujol Research Institute (IGTP). Badalona, Barcelona, Spain
| | - C Santamaría
- Servicio de Dermatología. Hospital Universitario de la Princesa, Madrid, Spain
| | - J Sánchez-Pérez
- Servicio de Dermatología. Hospital Universitario de la Princesa, Madrid, Spain
| | - G Carretero Hernández
- Servicio de Dermatología. Hospital Universitario de Gran Canaria Doctor Negrín, Las Palmas de Gran Canaria, Spain
| | - A Batalla Cebey
- Servicio de Dermatología. Complejo Hospitalario de Pontevedra, Pontevedra, Spain
| | - H Jin Suh Oh
- Servicio de Dermatología. Complejo Hospitalario de Pontevedra, Pontevedra, Spain
| | - C Mauleón Fernández
- Servicio de Dermatología. Hospital Universitario Infanta Leonor, Madrid, Spain
| | - L Curto Barredo
- Servicio de Dermatología. Hospital del Mar-Parc de Salut Mar, Barcelona, Spain
| | - M Bertolín
- Servicio de Dermatología. Hospital del Mar-Parc de Salut Mar, Barcelona, Spain
| | - A Navarro Bielsa
- Servicio de Dermatología. Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - A Ballano Ruiz
- Servicio de Dermatología. Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - R Botella Estrada
- Servicio de Dermatología. Hospital Universitario y Politécnico la Fe, Valencia, Spain
| | - S Arias Santiago
- Servicio de Dermatología. Hospital Universitario Virgen de las Nieves, Granada, Spain
| | - I Betlloch
- Servicio de Dermatología. Hospital General Universitario Alicante, Alicante, Spain
| | - G Roustan Gullón
- Servicio de Dermatología. Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - A Rosell Díaz
- Servicio de Dermatología. Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - M Á Descalzo
- Unidad de Investigación. Fundación Piel Sana AEDV, Spain
| | - I García-Doval
- Unidad de Investigación. Fundación Piel Sana AEDV, Spain; Servicio de Dermatología. Complexo Hospitalario Universitario de Vigo, Vigo, Spain
| | - J M Carrascosa
- Servicio de Dermatología. Hospital Universitari Germans Trias i Pujol. Universitat Autònoma de Barcelona. Germans Trias i Pujol Research Institute (IGTP). Badalona, Barcelona, Spain
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Munera-Campos M, Chicharro P, Gonzalez Quesada A, Florez Menendez A, de la Cueva Dovao P, Gimenez Arnau AM, Gilaberte Calzada Y, Rodríguez Serna M, Montero T, Silvestre Salvador JF, Elosua González M, Del Alcazar E, Santamaría C, Sánchez-Pérez J, Carretero Hernández G, Batalla Cebey A, Jin Suh Oh H, Mauleón Fernández C, Curto Barredo L, Bertolín M, Navarro Bielsa A, Ballano Ruiz A, Botella Estrada R, Arias Santiago S, Betlloch I, Roustan Gullón G, Rosell Díaz A, Descalzo MÁ, García-Doval I, Carrascosa JM. BIOBADATOP Spanish Atopic Dermatitis Registry: Description and Early Findings. Actas Dermosifiliogr 2023:S0001-7310(23)00181-3. [PMID: 36935039 DOI: 10.1016/j.ad.2023.03.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 03/19/2023] Open
Abstract
BACKGROUND In recent years, remarkable improvements in our understanding of atopic dermatitis (AD) have revolutionized treatment perspectives, but access to reliable data from clinical practice is essential. MATERIALS AND METHOD The Spanish Atopic Dermatitis Registry, BIOBADATOP, is a prospective, multicenter database that collects information on patients of all ages with AD requiring systemic therapy with conventional or novel drugs. We analyzed the registry to describe patient characteristics, diagnoses, treatments, and adverse events (AEs). RESULTS We studied data entries for 258 patients who had received 347 systemic treatments for AD. Treatment was discontinued in 29.4% of cases, mostly due to a lack of effectiveness (in 10.7% of cases). A total of 132 AEs were described during follow-up. Eighty-six AEs (65%) were linked to a systemic treatment, most commonly dupilumab (39 AEs) and cyclosporine (38 AEs). The most common AEs were conjunctivitis (11 patients), headache (6), hypertrichosis (5), and nausea (4). There was 1 severe AE (acute mastoiditis) associated with cyclosporine. CONCLUSIONS Initial findings on AEs from the Spanish BIOBADATOP registry are limited by short follow-up times precluding comparisons or calculation of crude and adjusted incidence rates. At the time of our analysis, no severe AEs had been reported for novel systemic therapies. BIOBADATOP will help answer questions on the effectiveness and safety of conventional and novel systemic therapies in AD.
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Affiliation(s)
- M Munera-Campos
- Servicio de Dermatología. Hospital Universitari Germans Trias i Pujol. Universitat Autònoma de Barcelona. Germans Trias i Pujol Research Institute (IGTP). Badalona, Barcelona, Spain.
| | - P Chicharro
- Servicio de Dermatología. Hospital Universitario de la Princesa, Madrid, Spain
| | - A Gonzalez Quesada
- Servicio de Dermatología. Hospital Universitario de Gran Canaria Doctor Negrín, Las Palmas de Gran Canaria, Spain
| | - A Florez Menendez
- Servicio de Dermatología. Complejo Hospitalario de Pontevedra, Pontevedra, Spain
| | - P de la Cueva Dovao
- Servicio de Dermatología. Hospital Universitario Infanta Leonor, Madrid, Spain
| | - A M Gimenez Arnau
- Servicio de Dermatología. Hospital del Mar-Parc de Salut Mar, Barcelona, Spain
| | - Y Gilaberte Calzada
- Servicio de Dermatología. Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - M Rodríguez Serna
- Servicio de Dermatología. Hospital Universitario y Politécnico la Fe, Valencia, Spain
| | - T Montero
- Servicio de Dermatología. Hospital Universitario Virgen de las Nieves, Granada, Spain
| | | | - M Elosua González
- Servicio de Dermatología. Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - E Del Alcazar
- Servicio de Dermatología. Hospital Universitari Germans Trias i Pujol. Universitat Autònoma de Barcelona. Germans Trias i Pujol Research Institute (IGTP). Badalona, Barcelona, Spain
| | - C Santamaría
- Servicio de Dermatología. Hospital Universitario de la Princesa, Madrid, Spain
| | - J Sánchez-Pérez
- Servicio de Dermatología. Hospital Universitario de la Princesa, Madrid, Spain
| | - G Carretero Hernández
- Servicio de Dermatología. Hospital Universitario de Gran Canaria Doctor Negrín, Las Palmas de Gran Canaria, Spain
| | - A Batalla Cebey
- Servicio de Dermatología. Complejo Hospitalario de Pontevedra, Pontevedra, Spain
| | - H Jin Suh Oh
- Servicio de Dermatología. Complejo Hospitalario de Pontevedra, Pontevedra, Spain
| | - C Mauleón Fernández
- Servicio de Dermatología. Hospital Universitario Infanta Leonor, Madrid, Spain
| | - L Curto Barredo
- Servicio de Dermatología. Hospital del Mar-Parc de Salut Mar, Barcelona, Spain
| | - M Bertolín
- Servicio de Dermatología. Hospital del Mar-Parc de Salut Mar, Barcelona, Spain
| | - A Navarro Bielsa
- Servicio de Dermatología. Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - A Ballano Ruiz
- Servicio de Dermatología. Hospital Universitario Miguel Servet, Zaragoza, Spain
| | - R Botella Estrada
- Servicio de Dermatología. Hospital Universitario y Politécnico la Fe, Valencia, Spain
| | - S Arias Santiago
- Servicio de Dermatología. Hospital Universitario Virgen de las Nieves, Granada, Spain
| | - I Betlloch
- Servicio de Dermatología. Hospital General Universitario Alicante, Alicante, Spain
| | - G Roustan Gullón
- Servicio de Dermatología. Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - A Rosell Díaz
- Servicio de Dermatología. Hospital Universitario Puerta de Hierro, Madrid, Spain
| | - M Á Descalzo
- Unidad de Investigación. Fundación Piel Sana AEDV, Spain
| | - I García-Doval
- Unidad de Investigación. Fundación Piel Sana AEDV, Spain; Servicio de Dermatología. Complexo Hospitalario Universitario de Vigo, Vigo, Spain
| | - J M Carrascosa
- Servicio de Dermatología. Hospital Universitari Germans Trias i Pujol. Universitat Autònoma de Barcelona. Germans Trias i Pujol Research Institute (IGTP). Badalona, Barcelona, Spain
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Montero T, Gatica RI, Farassat N, Meza R, González-Cabrera C, Roeper J, Henny P. Dendritic Architecture Predicts in vivo Firing Pattern in Mouse Ventral Tegmental Area and Substantia Nigra Dopaminergic Neurons. Front Neural Circuits 2021; 15:769342. [PMID: 34867214 PMCID: PMC8640462 DOI: 10.3389/fncir.2021.769342] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/12/2021] [Indexed: 11/13/2022] Open
Abstract
The firing activity of ventral tegmental area (VTA) and substantia nigra pars compacta (SNc) dopaminergic (DA) neurons is an important factor in shaping DA release and its role in motivated behavior. Dendrites in DA neurons are the main postsynaptic compartment and, along with cell body and axon initial segment, contribute to action potential generation and firing pattern. In this study, the organization of the dendritic domain in individual VTA and SNc DA neurons of adult male mice, and their relationship to in vivo spontaneous firing, are described. In comparison with dorsal VTA DA neurons, ventrally located VTA neurons (as measured by cell body location) possess a shorter total dendritic length and simpler dendritic architecture, and exhibit the most irregular in vivo firing patterns among DA neurons. In contrast, for DA neurons in the SNc, the higher irregularity of firing was related to a smaller dendritic domain, as measured by convex hull volumes. However, firing properties were also related to the specific regional distribution of the dendritic tree. Thus, VTA DA neurons with a larger extension of their dendritic tree within the parabrachial pigmented (PBP) nucleus fired more regularly compared with those with relatively more dendrites extending outside the PBP. For DA neurons in the SNc, enhanced firing irregularity was associated with a smaller proportion of dendrites penetrating the substantia nigra pars reticulata. These results suggest that differences in dendritic morphology contribute to the in vivo firing properties of individual DA neurons, and that the existence of region-specific synaptic connectivity rules that shape firing diversity.
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Affiliation(s)
- Trinidad Montero
- Laboratorio de Neuroanatomía, Departamento de Anatomía, and Centro Interdisciplinario de Neurociencia, NeuroUC, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rafael Ignacio Gatica
- Laboratorio de Neuroanatomía, Departamento de Anatomía, and Centro Interdisciplinario de Neurociencia, NeuroUC, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Navid Farassat
- Institute of Neurophysiology, Goethe University, Frankfurt, Germany
| | - Rodrigo Meza
- Laboratorio de Neuroanatomía, Departamento de Anatomía, and Centro Interdisciplinario de Neurociencia, NeuroUC, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Cristian González-Cabrera
- Laboratorio de Neuroanatomía, Departamento de Anatomía, and Centro Interdisciplinario de Neurociencia, NeuroUC, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jochen Roeper
- Institute of Neurophysiology, Goethe University, Frankfurt, Germany
| | - Pablo Henny
- Laboratorio de Neuroanatomía, Departamento de Anatomía, and Centro Interdisciplinario de Neurociencia, NeuroUC, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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Carvajal CA, Stehr CB, González PA, Riquelme EM, Montero T, Santos MJ, Kalergis AM, Fardella CE. A de novo unequal cross-over mutation between CYP11B1 and CYP11B2 genes causes familial hyperaldosteronism type I. J Endocrinol Invest 2011; 34:140-4. [PMID: 20634641 DOI: 10.1007/bf03347044] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [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: 11/28/2022]
Abstract
UNLABELLED Familial hyperaldosteronism type I (FH-I) is an autosomal dominant disorder caused by an unequal cross-over of the gene encoding steroid 11β-hydroxylase (CYP11B1) and aldosterone synthase (CYP11B2), giving rise to a chimeric CYP11B1/CYP11B2 gene that displays aldosterone synthase activity regulated by ACTH instead of angiotensin II. AIM To report an unprecedented case of a de novo unequal crossover mutation between CYP11B1 and CYP11B2 genes causing FH-I. PATIENTS AND METHODS The index case is a 45-yr-old Chilean male diagnosed with primary aldosteronism (PA). All family members were also studied: his biological parents, 1 brother, 6 sisters, 2 daughters, and 1 son. Plasma renin activity, serum aldosterone, and its ratio were measured in all patients. Genetic analyses were performed using long-extension PCR (XL-PCR), DNA sequencing and Southern blot methods. RESULTS PA was diagnosed for the index case, 1 of his daughters, his son but not for his parents or siblings. XLPCR and Southern blotting demonstrated the presence of the chimeric CYP11B1/CYP11B2 gene solely in PA-affected subjects, suggesting a case of a de novo mutation. Sequence analysis showed the unequal cross-over CYP11B1/CYP11B2 at intron 2 (c.2600-273 CYP11B2). We also identified a polymorphism at the same intron (c.2600-145C>A CYP11B2) in the genome of the index case's father. CONCLUSION We describe an unprecedented case of unequal cross-over mutation for the chimeric CYP11B1/CYP11B2 gene causing FH-I, which may be linked to a polymorphism in the index case's father germ line.
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Affiliation(s)
- C A Carvajal
- Endocrinology Department, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile
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Sierra JM, Cabeza JG, Ruiz Chaler M, Montero T, Hernandez J, Mensa J, Llagostera M, Vila J. The selection of resistance to and the mutagenicity of different fluoroquinolones in Staphylococcus aureus and Streptococcus pneumoniae. Clin Microbiol Infect 2005; 11:750-8. [PMID: 16104991 DOI: 10.1111/j.1469-0691.2005.01211.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [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: 11/26/2022]
Abstract
Two quinolone-susceptible Staphylococcus aureus and five quinolone-susceptible Streptococcus pneumoniae isolates were used to obtain in-vitro quinolone-resistant mutants in a multistep resistance selection process. The fluoroquinolones used were ciprofloxacin, moxifloxacin, levofloxacin, gemifloxacin, trovafloxacin and clinafloxacin. The mutagenicity of these quinolones was determined by the Salmonella and the Escherichia coli retromutation assays. All quinolone-resistant Staph. aureus mutants had at least one mutation in the grlA gene, while 86.6% of quinolone-resistant Strep. pneumoniae mutants had mutations in either or both the gyrA and parC genes. Moxifloxacin and levofloxacin selected resistant mutants later than the other quinolones, but this difference was more obvious in Staph. aureus. Accumulation of the fluoroquinolones by Staph. aureus did not explain these differences, since levofloxacin and moxifloxacin accumulated inside bacteria to the same extent as clinafloxacin and trovafloxacin. The results also showed that moxifloxacin and levofloxacin had less mutagenic potency in both mutagenicity assays, suggesting a possible relationship between the selection of resistance to quinolones and the mutagenic potency of the molecule. Furthermore, gemifloxacin selected efflux mutants more frequently than the other quinolones used. Thus, the risk of developing quinolone resistance may depend on the density of the microorganism at the infection site and the concentration of the fluoroquinolone, and also on the mutagenicity of the quinolone used, with moxifloxacin and levofloxacin being the least mutagenic.
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Affiliation(s)
- J M Sierra
- Departament de Microbiologia, Centre de Diagnòstic Biomèdic, IDIBAPS, Hospital Clínic Barcelona, and Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Spain
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Jimenez-Escrig A, Rabano A, Guerrero C, Simon J, Barquero MS, Güell I, Ginestal RC, Montero T, Orensanz L. New V272A presenilin 1 mutation with very early onset subcortical dementia and parkinsonism. Eur J Neurol 2004; 11:663-9. [PMID: 15469450 DOI: 10.1111/j.1468-1331.2004.00865.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [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: 11/29/2022]
Abstract
In this report, we present the clinical and pathological details of a kindred of four individuals with a novel missense mutation (V272A) of the presenilin 1 gene (PSEN1) that experienced a subcortical dementia. The age of onset of symptoms ranged 26-36-year old, with an age at death of 36-46 years. Initial symptom was a marked mood disorder, with prominent parkinsonism in one case. The neuropsychological study, as well as the neuroimaging and PET in the proband were concordant with a subcortical dementia. The cerebral pathology showed in this patient, aside from the classical lesions of Alzheimer disease, Lewy bodies in cortex and substantia nigra, and widespread subcortical neuritic lesions. This clinical pattern and pathology expands the clinical spectrum of familial Alzheimer's disease and compel to include mutations of PSEN1 gene in the genetic study of subcortical dementia.
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Vieites JM, de la Torre R, Ortega MA, Montero T, Peco JM, Sánchez-Pozo A, Gil A, Suárez A. Characterization of human cd200 glycoprotein receptor gene located on chromosome 3q12-13. Gene 2003; 311:99-104. [PMID: 12853143 DOI: 10.1016/s0378-1119(03)00562-6] [Citation(s) in RCA: 26] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
An immunomodulatory membrane protein, CD200R displays an expression pattern restricted to myeloid cells in mice. It is the receptor for a ligand, CD200, expressed by a broad range of cell types. In this study, we describe the cloning and characterization of the human homologue of the CD200R gene. This gene maps closely to the CD200 gene on human chromosome 3q12-13. The human CD200R gene spans a region of 52 kb, consists of nine exons, and encodes a 348-amino-acid cell-surface protein consisting of two IgFF domains in a typical V/C2 arrangement. The 59-amino-acid cytoplasmic domain has two tyrosine residues, one of which is contained within a NPXY motif. In common with other IgSF genes, the CD200R gene can generate different protein isoforms through alternative splicing. An alternative spliceout form, which has not yet been described in mice, encodes a 188-amino-acid truncated soluble polypeptide containing only the V immunoglobulin domain. In contrast to murine CD200R protein, the human membrane-bound and soluble CD200R proteins have an insertion of 23 amino acids at position 23, encoded by exon 2, which generates a putative dihydroxyacid dehydratase domain. The splicing of exon 2 generates two new isoforms, encoding the membrane and soluble proteins but lacking the dyhydroxyacid dehydratase domain. Northern-blot analysis shows that both membrane-bound and soluble isoforms are expressed in the thymus, liver, spleen and placenta. By RT-PCR, we have analyzed the expression of the four transcript variants in human placenta, spleen, liver, brain and kidney.
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MESH Headings
- Adult
- Alternative Splicing
- Amino Acid Sequence
- Antigens, CD
- Antigens, Surface/genetics
- Blotting, Northern
- Chromosome Mapping
- Chromosomes, Human, Pair 3/genetics
- Cloning, Molecular
- DNA, Complementary/chemistry
- DNA, Complementary/genetics
- Female
- Gene Expression
- Genes/genetics
- Humans
- Molecular Sequence Data
- Orexin Receptors
- Protein Isoforms/genetics
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, Cell Surface
- Sequence Analysis, DNA
- Sequence Homology, Amino Acid
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Affiliation(s)
- Jose María Vieites
- Department of Biochemistry and Molecular Biology, University of Granada, 18071 Granada, Spain
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8
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Vallespi MG, Alvarez-Obregón JC, Rodriguez-Alonso I, Montero T, Garay H, Reyes O, Araña MJ. A Limulus anti-LPS factor-derived peptide modulates cytokine gene expression and promotes resolution of bacterial acute infection in mice. Int Immunopharmacol 2003; 3:247-56. [PMID: 12586605 DOI: 10.1016/s1567-5769(02)00277-1] [Citation(s) in RCA: 48] [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] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Sepsis in experimental animals and humans has been associated with perturbed immune response. A major event contributing to the decrease in immune functions in septic disorders seems to be the inadequate balance of cytokines mediating the interactions between the innate and adaptive immune systems. We previously observed that a cyclic peptide derived from the Limulus anti-LPS factor (LALF), which partially protect mice from endotoxic shock lethality, has the ability to modulate cytokine secretion in vitro. We herein examined the effects of the LALF(31-52) peptide in an experimental model of Gram-negative peritoneal sepsis and analyzed the cytokine gene expression in the spleen and liver of peptide-treated mice. The prophylactic administration of LALF(31-52) abrogated the systemic TNF-alpha response, reduced organ damage and increased the survival of infected mice. Histological examination of spleen and liver in peptide-treated mice showed prevention of tissue damage induced by the high dose of Pseudomonas aeruginosa. This treatment modulates the cytokine gene expression in these tissues, stimulating IL-2, IL-12 and IL-13 mRNA synthesis, while IL-4 and IL-10 mRNA expression was not modified. This cytokine profile induced by the LALF-derived peptide seems to be favorable for host resistance against Gram-negative bacteria acute infection. In addition, peptide treatment was effective after the initiation of the systemic inflammatory response, promoting a significant increase in mice survival. These results further demonstrate the immunomodulatory potential of LALF(31-52) and are relevant for the design of prophylactic and therapeutic strategies for acute bacteria infection and sepsis, especially for preventing or ameliorating host immunity defects in these disorders.
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Affiliation(s)
- Maribel G Vallespi
- Division of Physics and Chemistry, Center for Genetic Engineering and Biotechnology, PO Box 6162, Ave 31 e/158 y 190, Cubanacan, Playa, Havana CP 10600, Cuba.
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9
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Berlanga M, Ruiz N, Hernandez-Borrell J, Montero T, Viñas M. Role of the outer membrane in the accumulation of quinolones by Serratia marcescens. Can J Microbiol 2000; 46:716-22. [PMID: 10941517] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Accumulation of four quinolones by Serratia marcescens was measured fluorometrically. The passage of quinolones through the outer membrane was studied in both lipopolysaccharide-deficient and porin-deficient mutants. The lipopolysaccharide (LPS) layer formed a partially effective barrier for highly hydrophobic quinolones such as nalidixic acid. Quinolones with a low relative hydrophobicity coefficient seemed to pass preferentially through the water-filled Omp3 porin channels. Results were confirmed when Omp3 was cloned in a porin-defective Escherichia coli.
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Affiliation(s)
- M Berlanga
- Laboratory of Microbiology, University of Barcelona, Spain
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Escribano L, Orfao A, Díaz Agustín B, Cerveró C, Herrero S, Villarrubia J, Bravo P, Torrelo A, Montero T, Valdemoro M, Velasco JL, Navarro JL, San Miguel JF. Human bone marrow mast cells from indolent systemic mast cell disease constitutively express increased amounts of the CD63 protein on their surface. Cytometry 1998; 34:223-8. [PMID: 9822308 DOI: 10.1002/(sici)1097-0320(19981015)34:5<223::aid-cyto3>3.0.co;2-b] [Citation(s) in RCA: 32] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The quantitative measurement of the expression of both cytoplasmic and surface CD63 antigen by human mast cells from both normal and pathological bone marrow samples was studied by use of flow cytometry. Our major goal was to analyze whether in vivo CD63 expression by human bone marrow mast cells could be useful to discriminate bone marrow mast cells from patients with mastocytosis from other conditions. For that purpose, a total of 65 subjects corresponding to 12 healthy volunteers, 25 B-cell chronic lymphoproliferative disorders, 5 reactive bone marrow samples, 4 myelodysplastic syndromes, and 19 mastocytosis were analyzed. The expression of both surface and cytoplasmic CD63 by human bone marrow mast cells is clearly demonstrated. Our results show that high amounts of CD63 are present in human bone marrow mast cells most of it corresponding to an intracellular localization. No significant differences in CD63 expression were observed as regards both total and cytoplasmic CD63, except for higher CD63 levels in adult patients with mastocytosis (P = 0.05). By contrast, the mean level of surface CD63 significantly varied between the different groups of individuals. Accordingly, patients with monoclonal gammopathies displayed a slight decrease (P = 0.1) in surface CD63 expression, whereas bone marrow mast cells from adults with indolent systemic mast cell disease showed significantly (P = 0.0005) higher levels of surface CD63 as compared to healthy controls.
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Affiliation(s)
- L Escribano
- Department of Hematología, Hospital Ramón y Cajal, Universidad de Alcalá de Henares, Madrid, Spain
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11
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Martín ME, Montero T, Alcázar A, García A, Fando JL, Salinas M. Heterogeneity in the beta-subunit of translational initiation factor eIF-2 during brain development. Neurochem Res 1991; 16:749-55. [PMID: 1944763 DOI: 10.1007/bf00965683] [Citation(s) in RCA: 5] [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: 12/29/2022]
Abstract
We have detected by immunoblotting analysis of crude fractions from suckling and adult rat brain, resolved by two-dimensional isoelectric focusing-dodecyl sulfate polyacrylamide gel electrophoresis, the presence of two different forms of the beta subunit of polypeptide initiation factor 2 (eIF-2). These two forms differ in their apparent molecular weights and also in their isoelectric point values. Quantitation of both forms in the crude fractions shows that, the most basic form beta 1 (pI: 6.1, 52 kDa), is present in higher levels of the salt wash ribosomal fractions obtained from both, suckling and adult animals, than in the postmicrosomal fraction corresponding to the same animals. The most acidic form, beta 2 (pI: 5.9, 50 kDa), is present in the highest level in the postmicrosomal supernatant from adult animals. A close parallelism is found between beta 1 levels and eIF-2 activity.
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Affiliation(s)
- M E Martín
- Departamento de Investigación, Hospital Ramón y Cajal, Madrid, Spain
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12
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Quintana J, Beresi V, del Pozo H, Schuh W, Del Borgo P, Koporcic M, Arroyo M, Avayú E, Montero T. [Acute lymphoblastic leukemia: results of treatment in 130 children]. Rev Chil Pediatr 1987; 58:219-24. [PMID: 3483472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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13
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Montero T, Barraza P, Suárez M, Avendaño LF. [Antibodies against rubella and herpes virus in women attending hospitalized newborn infants]. Rev Chil Pediatr 1986; 57:46-50. [PMID: 3020622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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