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Sáenz-Medina J, Jorge E, Corbacho C, Santos M, Sánchez A, Soblechero P, Virumbrales E, Ramil E, Coronado MJ, Castillón I, Prieto D, Carballido J. Metabolic syndrome contributes to renal injury mediated by hyperoxaluria in a murine model of nephrolithiasis. Urolithiasis 2017; 46:179-186. [PMID: 28405703 DOI: 10.1007/s00240-017-0979-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 04/03/2017] [Indexed: 11/26/2022]
Abstract
Metabolic syndrome (MS) individuals have a higher risk of developing chronic kidney disease through unclear pathogenic mechanisms. MS has been also related with higher nephrolithiasis prevalence. To establish the influence of MS on renal function, we designed a murine model of combined metabolic syndrome and hyperoxaluria. Four groups of male Sprague-Dawley rats were established: (1) control group (n = 10) fed with standard chow; (2) stone former group (SF) (n = 10) fed with standard chow plus 0.75% ethylene glycol administered in the drinking water; (3) metabolic syndrome group (MS) (n = 10), fed with 60% fructose diet; (4) metabolic syndrome + stone former group (MS + SF) (n = 10), 60% fructose diet and 0.75% EG in the drinking water. MS group showed a significant injury to renal function when hyperoxaluria was induced. It was demonstrated by a significant decrease of creatinine clearance (p < 0.001), with higher tubular damage (34.3%, CI 95% 23.9-44.7, p < 0.001), produced by deposition of crystals, and increased tubular synthesis of osteopontin as a response to tubular damage. Induction of hyperoxaluria in rats with MS causes severe morphological alterations with a significant impairment of renal function. This impairment is not produced in rats without MS. Therefore, this model can be useful for the study of the influence of MS in stone formation.
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Affiliation(s)
- Javier Sáenz-Medina
- Department of Urology, Hospital Universitario Puerta de Hierro-Majadahonda, C/Lope de Vega 2, portal 5 1ºB, Pozuelo de Alarcón, 28223, Madrid, Spain.
| | - E Jorge
- Department of Clinical Biochemistry, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - C Corbacho
- Department of Pathology, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - M Santos
- Medical and Surgical Research Facility, Instituto de Investigación Sanitaria Puerta de Hierro, Madrid, Spain
| | - A Sánchez
- Biobank, Instituto de Investigación Sanitaria Puerta de Hierro, Madrid, Spain
| | - P Soblechero
- Department of Clinical Biochemistry, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - E Virumbrales
- Department of Clinical Biochemistry, Hospital Universitario Puerta de Hierro-Majadahonda, Madrid, Spain
| | - E Ramil
- Molecular Biology and DNA Sequencing Facility, Instituto de Investigación Sanitaria Puerta de Hierro, Madrid, Spain
| | - M J Coronado
- Confocal Microscopy Facility, Instituto de Investigación Sanitaria Puerta de Hierro, Madrid, Spain
| | - I Castillón
- Department of Urology, Hospital Universitario Puerta de Hierro-Majadahonda, C/Lope de Vega 2, portal 5 1ºB, Pozuelo de Alarcón, 28223, Madrid, Spain
| | - D Prieto
- Department of Animal Phisiology, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
| | - J Carballido
- Department of Urology, Hospital Universitario Puerta de Hierro-Majadahonda, C/Lope de Vega 2, portal 5 1ºB, Pozuelo de Alarcón, 28223, Madrid, Spain
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Abraira V, Alvarez-Cermeño J, Arroyo R, Cámara C, Casanova B, Cubillo S, de Andrés C, Espejo C, Fernández O, Ferrer J, Figueredo M, García-Merino A, García-Sánchez M, García-Trujillo J, Gómez M, González-Oria C, Gosis A, Izquierdo G, Jímenez J, López-Trascasa M, Montalbán X, Moreno M, Muñoz D, Nuñez V, Muriel A, Navarro J, Olascoaga J, Oreja-Guevara C, Prada A, Ramil E, Ramo-Tello C, Rodríguez C, Rodríguez E, Rodríguez-Frías F, Rodríguez-Antigüedad A, Rodríguez-Molina J, Ruiz E, Saiz A, Sarasola E, Simó M, Yagüe J, Villar L. Utility of oligoclonal IgG band detection for MS diagnosis in daily clinical practice. J Immunol Methods 2011; 371:170-3. [DOI: 10.1016/j.jim.2011.06.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 06/06/2011] [Accepted: 06/08/2011] [Indexed: 11/29/2022]
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Ramil E, Sánchez AJ, González-Pérez P, Rodríguez-Antigüedad A, Gómez-Lozano N, Ortiz P, Arroyo R, De las Heras V, Vilches C, García-Merino A. The cannabinoid receptor 1 gene (CNR1) and multiple sclerosis: an association study in two case-control groups from Spain. Mult Scler 2009; 16:139-46. [DOI: 10.1177/1352458509355071] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Different studies point to the implication of the endocannabinoid system in multiple sclerosis (MS) and animal models of MS. The purpose of this study was to evaluate a possible association of MS with polymorphic markers at the CNR1 gene, encoding the cannabinoid 1 (CB1) receptor. We have performed a genetic analysis of an AAT repeat microsatellite localized in the downstream region of the CNR1 gene, in two case—control groups of MS patients and healthy controls (HC) from Spain (Madrid and Bilbao). MS patients with primary progressive MS (PPMS) had more commonly long ((AAT) ≥13) alleles and genotypes with a significant difference for genotype 7/8 in Madrid (p = 0.043) and in the sum of both groups (p = 0.016); short alleles were less frequently found in PPMS with a significant difference for allele 5 in the analysis of both groups together (p = 0.039). In patients with relapsing MS, no consistent differences in allele and genotype distribution were found. Disease severity and progression was unrelated to AAT repeat variations. In conclusion, long (AAT) ≥13 CNR1 genotypes could behave as risk factors for PPMS.
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Affiliation(s)
- E. Ramil
- Neuroinmunology Unit, Hospital Universitario Puerta de Hierro, Majadahonda, Spain
| | - AJ Sánchez
- Neuroinmunology Unit, Hospital Universitario Puerta de Hierro, Majadahonda, Spain
| | - P. González-Pérez
- Neuroinmunology Unit, Hospital Universitario Puerta de Hierro, Majadahonda, Spain
| | | | - N. Gómez-Lozano
- Laboratorio de Citogenética, Hospital Universitario Puerta de Hierro, Majadahonda, Spain
| | - P. Ortiz
- Neuroinmunology Unit, Hospital Universitario Puerta de Hierro, Majadahonda, Spain
| | - R. Arroyo
- MS Unit, Hospital Clínico San Carlos, Madrid, Spain
| | | | - C. Vilches
- Laboratorio de Inmunogenética, Hospital Universitario Puerta de Hierro, Majadahonda, Spain
| | - A. García-Merino
- Neuroinmunology Unit, Hospital Universitario Puerta de Hierro, Majadahonda, Spain,
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Ordóñez D, Sánchez AJ, Martínez-Rodríguez JE, Cisneros E, Ramil E, Romo N, Moraru M, Munteis E, López-Botet M, Roquer J, García-Merino A, Vilches C. Multiple sclerosis associates with LILRA3 deletion in Spanish patients. Genes Immun 2009; 10:579-85. [DOI: 10.1038/gene.2009.34] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Freire-Picos MA, Lombardía-Ferreira LJ, Ramil E, González-Domínguez M, Cerdán ME. The KlCYC1 gene, a downstream region for two differentially regulated transcripts. Yeast 2001; 18:1347-55. [PMID: 11571759 DOI: 10.1002/yea.787] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [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: 11/05/2022] Open
Abstract
KlCYC1 encodes for cytochrome c in the yeast Kluyveromyces lactis and is transcribed in two mRNAs with different 3'-processing points. This is an uncommon transcription mechanism in yeast mRNAs. The 3' sequence encompassing the whole region that is needed to produce both mRNAs is analysed. We have determined identical processing points in K.lactis and in Saccharomyces cerevisiae cells transformed with KlCYC1; positions 698 and 1092 (with respect to the TAA) are the major polyadenylation points. This shows that the cis-elements present in the KlCYC1 3'-untranslated region (3'-UTR) direct a processing mechanism that has been conserved in yeast. In K. lactis there is a high predominance of the shorter transcript (1.14 kb) only at the initial logarithmic growth phase. Interestingly, this growth phase-dependent regulation of 3'-UTR processing is lost when the gene is expressed in S. cerevisiae.
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Affiliation(s)
- M A Freire-Picos
- Facultad de Ciencias, Departamento de Biología Celular y Molecular, Universidad de La Coruña, Campus de La Zapateira s/n, 15071-La Coruña, Spain.
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Abstract
Heme is of great importance in oxygen-dependent biological functions, since it serves as a prosthetic group for many proteins related to oxygen-binding, oxidative damage prevention and electron transport. It also regulates gene expression through the action of specific transcriptional regulatory factors. In this paper, we present an analysis of heme-dependent transcriptional regulation of several respiration-related genes in an aerobic respiratory yeast, Kluyveromyces lactis. We also report that the KlHEM13 gene, encoding the heme biosynthetic enzyme coproporphyrinogen oxidase, is under heme and oxygen transcriptional regulation, thereby controlling the synthesis of the effector, heme. KlHEM13 is induced during hypoxia, which represents the first report of a transcriptionally regulated gene with this behaviour in K. lactis.
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Ramil E, Agrimonti C, Shechter E, Gervais M, Guiard B. Regulation of the CYB2 gene expression: transcriptional co-ordination by the Hap1p, Hap2/3/4/5p and Adr1p transcription factors. Mol Microbiol 2000; 37:1116-32. [PMID: 10972830 DOI: 10.1046/j.1365-2958.2000.02065.x] [Citation(s) in RCA: 29] [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: 11/20/2022]
Abstract
Expression of the Saccharomyces cerevisiae nuclear gene CYB2 encoding the mitochondrial enzyme L-(+)-lactate-cytochrome c oxidoreductase (EC 1.2.2.3) is subject to several strict metabolic controls at the transcriptional level: repression due to glucose fermentation, derepression by ethanol, induction by lactate and inhibition under anaerobic conditions or in response to deficiency of haem biosynthesis. In this respect, the data obtained from the transcriptional analysis of the CYB2 gene contribute to a better understanding of the control of mitochondrial biogenesis. In this study, we show that Hap1p is the main transcriptional activator involved in the control of CYB2 transcription. We found that Hap1p activity, known to be oxygen dependent, is effected by DNA-protein interaction with two binding sites present in the CYB2 promoter. Control is moreover dependent on carbon sources. This regulation by the carbon substrates is subordinate to the activity of the complex Hap2/3/4/5p, which counteracts the negative effect of the URS1 element. Finally, our results suggest that the Adr1p transcriptional activator is also required in CYB2 transcription control. This work provides new data which allows a better understanding of the molecular mechanisms implicated in the co-regulation at the transcriptional level of the genes encoding proteins involved in various aspects of oxidative metabolism.
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Affiliation(s)
- E Ramil
- Centre de Génétique Moléculaire, Laboratoire propre du CNRS associé à l'Université Pierre et Marie Curie, 91198 Gif sur Yvette, France
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González-Siso MI, Freire-Picos MA, Ramil E, González-Domínguez M, Cerdán ME. Respirofermentative metabolism in Kluyveromyces lactis: Insights and perspectives. Enzyme Microb Technol 2000; 26:699-705. [PMID: 10862875 DOI: 10.1016/s0141-0229(00)00161-7] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Yeasts do not form a homogeneous group as far as energy-yielding metabolism is concerned and the fate of pyruvate, a glycolytic intermediate, determines the type of energy metabolism. Kluyveromyces lactis has become an alternative to the traditional yeast Saccharomyces cerevisiae owing to its industrial applications as well as to studies on mitochondrial respiration. In this review we summarize the current knowdeledge about the K. lactis respirofermentative metabolism, taking into account the respiratory capacity of this yeast and the molecular mechanisms controlling its regulation, giving an up-to-date picture.
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Affiliation(s)
- MI González-Siso
- Departamento de Biología Celular y Molecular, Facultad de Ciencias, Universidad de La Coruña, La Coruña, Spain
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Abstract
Functional analysis of the KlCYC1 promoter reveals that sequences located upstream to those already published [Freire-Picos, M. A., Rodríguez-Torres, A. M., Ramil, E., Cerdán, M. E., Breuning, K. D., Hollenberg, C. P. & Zitomer, R. S. (1993) Sequence of a cytochrome c from Kluyveromyces lactis and its upstream region, Yeast 9, 201-204] and extending from positions -780 to -371 are important for maintaining high levels of expression, although this region contains both negative and positive elements. A consensus sequence for interaction with KlCpf1p is present at position -492, into the negative site, and specific protein binding to KlCpf1p has been demonstrated. Deletion of the sequences from positions -413 to -338 diminishes KlCYC1 transcription; protein binding to two sequences included in this activator region is detected and several points of evidence indicate that the complex observed is different from the Hap2/3/4/5p complex. Binding of KlCpf1p and the activator complex to the promoter is constitutive in different carbon sources. Although the promoter contains CCAAT boxes, directed mutagenesis has revealed that they are not related to the moderate de-repression observed in glycerol media.
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Affiliation(s)
- E Ramil
- Departamento de Biología Celular y Molecular, Universidad de La Coruña, Spain
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González Siso M, Ramil E, Cerdán M, Freire-Picos M. Respirofermentative metabolism in Kluyveromyces lactis: Ethanol production and the Crabtree effect. Enzyme Microb Technol 1996. [DOI: 10.1016/0141-0229(95)00151-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Rodriguez-Belmonte E, Rodriguez-Torres AM, Tizon B, Cadahia JL, Gonzalez-Siso I, Ramil E, Becerra M, Gonzalez-Dominguez M, Cerdan E. Sequence analysis of a 10 kb DNA fragment from yeast chromosome VII reveals a novel member of the DnaJ family. Yeast 1996; 12:145-8. [PMID: 8686378 DOI: 10.1002/(sici)1097-0061(199602)12:2<145::aid-yea888>3.0.co;2-e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [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: 02/01/2023] Open
Abstract
We report the sequence analysis of a 10 kb DNA fragment of Saccharomyces cerevisiae chromosome VII. This sequence contains four complete open reading frames (ORFs) of greater than 100 amino acids. There are also two incomplete ORFs flanking the extremes: one of these, G2868, is the 5' part of the SCS3 gene (Hosaka et al., 1994). ORFs G2853 and G2856 correspond to the genes CEG1, coding for the alfa subunit of the mRNA guanylyl transferase and a 3' gene of unknown function previously sequenced (Shibagaki et al., 1992). G2864 is identical to SOH1 also reported (Fan and Klein, 1994).
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Freire-Picos MA, González-Siso MI, Rodríguez-Belmonte E, Rodríguez-Torres AM, Ramil E, Cerdán ME. Codon usage in Kluyveromyces lactis and in yeast cytochrome c-encoding genes. Gene X 1994; 139:43-9. [PMID: 8112587 DOI: 10.1016/0378-1119(94)90521-5] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.0] [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: 01/28/2023] Open
Abstract
Codon usage (CU) in Kluyveromyces lactis has been studied. Comparison of CU in highly and lowly expressed genes reveals the existence of 21 optimal codons; 18 of them are also optimal in other yeasts like Saccharomyces cerevisiae or Candida albicans. Codon bias index (CBI) values have been recalculated with reference to the assignment of optimal codons in K. lactis and compared to those previously reported in the literature taking as reference the optimal codons from S. cerevisiae. A new index, the intrinsic codon deviation index (ICDI), is proposed to estimate codon bias of genes from species in which optimal codons are not known; its correlation with other index values, like CBI or effective number of codons (Nc), is high. A comparative analysis of CU in six cytochrome-c-encoding genes (CYC) from five yeasts is also presented and the differences found in the codon bias of these genes are discussed in relation to the metabolic type to which the corresponding yeasts belong. Codon bias in the CYC from K. lactis and S. cerevisiae is correlated to mRNA levels.
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Affiliation(s)
- M A Freire-Picos
- Departamento de Biología Celular y Molecular, Universidad de La Coruña, Spain
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Siso M, Freire A, Ramil E, Belmonte E, Torres A, Cerdán E. Covalent immobilization of β-galactosidase on corn grits. A system for lactose hydrolysis without diffusional resistance. Process Biochem 1994. [DOI: 10.1016/0032-9592(94)80053-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Freire Picos MA, Rodriguez Torres AM, Ramil E, Cerdan ME, Breunig KD, Hollenberg CP, Zitomer RS. Sequence of a cytochrome c gene from Kluyveromyces lactis and its upstream region. Yeast 1993; 9:201-4. [PMID: 8385407 DOI: 10.1002/yea.320090211] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [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: 01/30/2023] Open
Abstract
The complete sequence of a cytochrome c gene from Kluyveromyces lactis including its upstream region is reported. Sequence of the translated open reading frame is discussed in terms of cytochrome c structural requirements. Putative regulatory signals in the upstream region are described and compared with reported sequences which modulate the expression of respiratory-related yeast genes.
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Affiliation(s)
- M A Freire Picos
- Departamento de Biología Celular y Molecular, Universidad de La Coruña, Spain
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Siso MIG, Cerdán E, Picos MAF, Ramil E, Belmonte ER, Torres AR. Permeabilization ofKluyveromyces lactis cells for milk whey saccharification: A comparison of different treatments. ACTA ACUST UNITED AC 1992. [DOI: 10.1007/bf02439313] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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