1
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Long RM, Singer RH, Meng X, Gonzalez I, Nasmyth K, Jansen RP. Mating type switching in yeast controlled by asymmetric localization of ASH1 mRNA. Science 1997; 277:383-7. [PMID: 9219698 DOI: 10.1126/science.277.5324.383] [Citation(s) in RCA: 415] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Cell divisions that produce progeny differing in their patterns of gene expression are key to the development of multicellular organisms. In the budding yeast Saccharomyces cerevisiae, mother cells but not daughter cells can switch mating type because they selectively express the HO endonuclease gene. This asymmetry is due to the preferential accumulation of an unstable transcriptional repressor protein, Ash1p, in daughter cell nuclei. Here it is shown that ASH1 messenger RNA (mRNA) preferentially accumulates in daughter cells by a process that is dependent on actin and myosin. A cis-acting element in the 3'-untranslated region of ASH1 mRNA is sufficient to localize a chimeric RNA to daughter cells. These results suggest that localization of mRNA may have been an early property of the eukaryotic lineage.
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MESH Headings
- Actins/genetics
- Actins/physiology
- Cell Cycle
- Cell Nucleus/metabolism
- DNA-Binding Proteins
- Deoxyribonucleases, Type II Site-Specific/genetics
- Fungal Proteins/genetics
- Genes, Fungal
- Genes, Mating Type, Fungal
- In Situ Hybridization, Fluorescence
- Microtubules/physiology
- Mutation
- Myosin Heavy Chains
- Myosin Type V
- Myosins/genetics
- RNA, Fungal/genetics
- RNA, Fungal/metabolism
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Repressor Proteins/biosynthesis
- Repressor Proteins/genetics
- Saccharomyces cerevisiae/cytology
- Saccharomyces cerevisiae/genetics
- Saccharomyces cerevisiae/metabolism
- Saccharomyces cerevisiae/physiology
- Saccharomyces cerevisiae Proteins
- Transcription Factors/biosynthesis
- Transcription Factors/genetics
- Transformation, Genetic
- Tropomyosin/genetics
- Tropomyosin/physiology
- Zinc Fingers
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28 |
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2
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Gonzalez I, Grant KA, Richardson PT, Park SF, Collins MD. Specific identification of the enteropathogens Campylobacter jejuni and Campylobacter coli by using a PCR test based on the ceuE gene encoding a putative virulence determinant. J Clin Microbiol 1997; 35:759-63. [PMID: 9041429 PMCID: PMC229667 DOI: 10.1128/jcm.35.3.759-763.1997] [Citation(s) in RCA: 189] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
A PCR method for the rapid identification and discrimination of thermophilic Campylobacter jejuni and Campylobacter coli was developed by using a gene encoding a protein involved in siderophore transport (ceuE). A nucleotide sequence divergence of approximately 13% in the ceuE genes of C. jejuni and C. coli facilitated the design of two species-specific PCR primer sets. The specificity of the PCR amplification reactions was confirmed by using two nonradioactively labelled species-specific internal oligonucleotide hybridization probes for each of these species.
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research-article |
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3
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Gonzalez I, Buonomo SB, Nasmyth K, von Ahsen U. ASH1 mRNA localization in yeast involves multiple secondary structural elements and Ash1 protein translation. Curr Biol 1999; 9:337-40. [PMID: 10209099 DOI: 10.1016/s0960-9822(99)80145-6] [Citation(s) in RCA: 117] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Localization of ASH1 mRNA to the distal cortex of daughter but not mother cells at the end of anaphase is responsible for the two cells' differential mating-type switching during the subsequent cell cycle. This localization depends on actin filaments and a type V myosin (She1/Myo4). The 3' untranslated region (3' UTR) of ASH1 mRNA is reportedly capable of directing heterologous RNAs to a mother cell's bud [1] [2]. Surprisingly, however, its replacement has little or no effect on the localisation of ASH1 mRNA. We show here that, unlike all other known localization sequences that have been found in 3' UTRs, all the elements involved in ASH1 mRNA localization are located at least partly within its coding region. A 77 nucleotide region stretching from 7 nucleotides 5' to 67 nucleotides 3' of the stop codon of ASH1 mRNA is sufficient to localize mRNAs to buds; the secondary structure of this region, in particular two stems, is important for its localizing activity. Two regions entirely within coding sequences, both sufficient to localize green fluorescent protein (GFP) mRNA to growing buds, are necessary for ASH1 mRNA localization during anaphase. These three regions can anchor GFP mRNA to the distal cortex of daughter cells only inefficiently. The tight anchoring of ASH1 mRNA to the cortex of the daughter cell depends on translation of the carboxy-terminal sequences of Ash1 protein.
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4
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Benton BK, Tinkelenberg A, Gonzalez I, Cross FR. Cla4p, a Saccharomyces cerevisiae Cdc42p-activated kinase involved in cytokinesis, is activated at mitosis. Mol Cell Biol 1997; 17:5067-76. [PMID: 9271384 PMCID: PMC232357 DOI: 10.1128/mcb.17.9.5067] [Citation(s) in RCA: 102] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Yeasts have three functionally redundant G1 cyclins required for cell cycle progression through G1. Mutations in GIN4 and CLA4 were isolated in a screen for mutants that are inviable with deletions in the G1 cyclins CLN1 and CLN2. cln1 cln2 cla4 and cln1 cln2 gin4 cells arrest with a cytokinesis defect; this defect was efficiently rescued by CLN1 or CLN2 expression. GIN4 encodes a protein with strong homology to the Snflp serine/threonine kinase. Cla4p is homologous to mammalian p21-activated kinases (PAKs) (kinases activated by the rho-class GTPase Rac or Cdc42). We developed a kinase assay for Cla4p. Cla4p kinase was activated in vivo by the GTP-bound form of Cdc42p. The specific activity of Cla4p was cell cycle regulated, peaking near mitosis. Deletion of the Cla4p pleckstrin domain diminished kinase activity nearly threefold and eliminated in vivo activity. Deletion of the Cla4p Cdc42-binding domain increased kinase activity nearly threefold, but the mutant only weakly rescued cla4 function in vivo. This suggests that kinase activity alone is not sufficient for full function in vivo. Deletion of the Cdc42-binding domain also altered the cell cycle regulation of kinase activity. Instead of peaking at mitosis, the mutant kinase activity exhibited reduced cell cycle regulation and peaked at the G1/S border. Cla4p kinase activity was not reduced by mutational inactivation of gin4, suggesting that Gin4p may be downstream or parallel to Cla4p in the regulation of cytokinesis.
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102 |
5
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Aguilar-Martinez M, Macias-Ruvalcaba N, Bautista-Martinez J, Gomez M, Gonzalez F, Gonzalez I. Review: Hydrogen Bond and Protonation as Modifying Factors of the Quinone Reactivity. CURR ORG CHEM 2004. [DOI: 10.2174/1385272043369548] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21 |
68 |
6
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Rojas A, Delgado-López F, Perez-Castro R, Gonzalez I, Romero J, Rojas I, Araya P, Añazco C, Morales E, Llanos J. HMGB1 enhances the protumoral activities of M2 macrophages by a RAGE-dependent mechanism. Tumour Biol 2016; 37:3321-3329. [PMID: 26440051 DOI: 10.1007/s13277-015-3940-y] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 08/17/2015] [Indexed: 02/07/2023] Open
Abstract
The monocyte-macrophage lineage shows a high degree of diversity and plasticity. Once they infiltrate tissues, they may acquire two main functional phenotypes, being known as the classically activated type 1 macrophages (M1) and the alternative activated type 2 macrophages (M2). The M1 phenotype can be induced by bacterial products and interferon-γ and exerts a cytotoxic effect on cancer cells. Conversely, the alternatively activated M2 phenotype is induced by Il-4/IL13 and promotes tumor cell growth and vascularization. Although receptor for advanced glycation end-products (RAGE) engagement in M1 macrophages has been reported by several groups to promote inflammation, nothing is known about the functionality of RAGE in M2 macrophages. In the current study, we demonstrate that RAGE is equally expressed in both macrophage phenotypes and that RAGE activation by high-mobility group protein box1 (HMGB1) promotes protumoral activities of M2 macrophages. MKN45 cells co-cultured with M2 macrophages treated with HMGB1 at different times displayed higher invasive abilities. Additionally, conditioned medium from HMGB1-treated M2 macrophages promotes angiogenesis in vitro. RAGE-targeting knockdown abrogates these activities. Overall, the present findings suggest that HMGB1 may contribute, by a RAGE-dependent mechanism, to the protumoral activities of the M2 phenotype.
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9 |
54 |
7
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Rojas A, Araya P, Gonzalez I, Morales E. Gastric Tumor Microenvironment. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1226:23-35. [PMID: 32030673 DOI: 10.1007/978-3-030-36214-0_2] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A compelling body of evidence has demonstrated that gastric cancer has a very particular tumor microenvironment, a signature very suitable to promote tumor progression and metastasis. Recent investigations have provided new insights into the multiple molecular mechanisms, defined by genetic and epigenetic mechanisms, supporting a very active cross talk between the components of the tumor microenvironment and thus defining the fate of tumor progression. In this review, we intend to highlight the role of very active contributors at gastric cancer TME, particularly cancer-associated fibroblasts, bone marrow-derived cells, tumor-associated macrophages, and tumor-infiltrating neutrophils, all of them surrounded by an overtime changing extracellular matrix. In addition, the very active cross talk between the components of the tumor microenvironment, defined by genetic and epigenetic mechanisms, thus defining the fate of tumor progression, is also reviewed.
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Review |
5 |
54 |
8
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Moreno E, Gómez SR, Gonzalez I, Loinaz C, Garcia I, Perez A, Palomo C, Alvarado A, Maffettone V, Perez-Cerda F. Neurologic complications in liver transplantation. Acta Neurol Scand 1993; 87:25-31. [PMID: 8380946 DOI: 10.1111/j.1600-0404.1993.tb04070.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A retrospective review is presented of neurologic complications in our first 143 consecutive adult patients (208 liver transplants in 143 adults and 18 children) undergoing liver transplantation. Nineteen (13.2%) of the 143 patients developed neurologic complications in the postoperative period. Immunosuppression was initiated intraoperatively with steroids with the addition of azathioprine on Day 1 and cyclosporine, adjusted by RIA to a level of 400-600 ng/ml, on Day 2 post-transplantation. Azathioprine is discontinued in the third month. Fourteen of the 19 patients (73.6%) presented with CNS complications characterized by: diffuse multifactorial encephalopathy (5 patients); leukoencephalopathy (2 patients) which required temporary (1 case) or permanent (1 case) discontinuation of cyclosporine A; hemorrhage (in 2 cases due to arterial hypertension and coagulopathy and another due to unknown causes); ischemic/anoxic injury secondary to cardiorespiratory arrest (2 patients) or arteriothrombosis (1 patient); and myelopathy (1 patient) due to vertebral compression (T10-T11) secondary to osteoporosis. The diagnostic studies most often employed were computed tomographic (CT) (85.7%) and electroencephalography (EEG) (42.8%). Five of 19 patients (26.3%) suffered peripheral nervous system (PNS) complications: 1 patient with reversible Claude-Bernard-Horner Syndrome caused by central venous catheterization during anesthesia; 2 patients with peroneal nerve palsy due to compression below the knees by operating room table supports; 1 patient with an irreversible lesion of the right recurrent laryngeal nerve secondary to prolonged intubation and central venous catheterization; and 1 patient with a reversible lesion of the left brachial plexus secondary to inadvertant hyperextension of the upper extremity on the O.R. table due to the need for dialysis and catheterization of the axillary vein for veno-venous bypass.(ABSTRACT TRUNCATED AT 250 WORDS)
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32 |
49 |
9
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Laiz L, Groth I, Gonzalez I, Saiz-Jimenez C. Microbiological study of the dripping waters in Altamira cave (Santillana del Mar, Spain). J Microbiol Methods 1999; 36:129-38. [PMID: 10353807 DOI: 10.1016/s0167-7012(99)00018-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The culturable microbial populations in dripping waters from Altamira cave were studied and compared with those of the ceiling rock. Water communities have low proportions of gram-positive bacteria, and are mainly composed of gram-negative rods and cocci (Enterobacteriaceae and Vibrionaceae), while those of ceiling rocks are mainly Streptomyces spp. The community differences are probably related to environmental cave conditions: high humidity, relatively low and stable temperature, water pH close to neutrality and nature of the organic matter. All these factors seem to favor colonization and long-term growth of actinomycetes over other heterotrophic bacteria on ceiling rocks.
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26 |
47 |
10
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Gómez R, Hidalgo M, Marques E, Marin L, Loinaz C, Gonzalez I, Garcia I, Moreno E. Incidence and predisposing factors for incisional hernia in patients with liver transplantation. Hernia 2001; 5:172-6. [PMID: 12003043 DOI: 10.1007/s10029-001-0032-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Cirrhotic patients who are transplanted have a high risk of developing incisional hernia (IH). MATERIALS AND METHODS We have analysed the incidence and treatment of IH in 465 patients with liver transplantation (LT). In order to find predisposing factors, we compared these patients with a similar group of patients with LT without IH. Fifty-four patients (11.6%) developed an IH. Forty-six of these (85%) were males, and in 37% the entire laparotomy incision was involved. Forty patients have been operated on for the hernia, three by primary repair and 37 (92.5%) with a polypropylene mesh. After a follow-up of 42 months, 6 (15%) IHs recurred. Comparing groups, IH patients were older (P<0.05), of male gender (P<0.001), and received more steroids (P<0.01). The IH rate was not related to suture material. CONCLUSIONS Our rate of IH is perhaps reasonable in these high risk patients. It appears that IH can be reduced if steroids are reduced or avoided. We recommend a large mesh for repair.
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24 |
45 |
11
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Galant J, Martí-Bonmatí L, Soler R, Saez F, Lafuente J, Bonmatí C, Gonzalez I. Grading of subcutaneous soft tissue tumors by means of their relationship with the superficial fascia on MR imaging. Skeletal Radiol 1998; 27:657-63. [PMID: 9921926 DOI: 10.1007/s002560050455] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To assess the diagnostic value of the relationship between subcutaneous tumors and the superficial fascia in the characterization of soft-tissue masses. DESIGN MR studies of 64 soft tissue masses located in the subcutaneous space were reviewed. We established five grades of relationship between tumors and superficial fascia and analyzed the probability of the lesions in each group being malignant. Group 1 tumors did not contact the fascia; group 2 lesions contacted it slightly, with acute angles between the tumor and the fascia; group 3 lesions had wider contact with larger acute or right angles; group 4 tumors had even wider contact with obtuse angles with the fascia; and group 5 was composed of lesions that crossed the superficial fascia. RESULTS The probability of a subcutaneous lesion that crosses the superficial fascia being malignant was 6.88 times greater than for lesions that did not cross the fascia. For lesions forming obtuse angles with the fascia the probability of malignancy was 6.3 times greater than that of tumors that did not present this sign. All histologically verified fascial infiltrations occurred in malignant lesions of groups 4 and 5. CONCLUSIONS Malignant tumors of the subcutaneous compartment have a higher tendency to develop a close relationship with the fascia than benign lesions. Obtuse angles between superficial fascia and a subcutaneous mass or a lesion crossing the fascia strongly suggest malignancy.
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27 |
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12
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Hernandez-Montelongo J, Lucchesi E, Gonzalez I, Macedo W, Nascimento V, Moraes A, Beppu M, Cotta M. Hyaluronan/chitosan nanofilms assembled layer-by-layer and their antibacterial effect: A study using Staphylococcus aureus and Pseudomonas aeruginosa. Colloids Surf B Biointerfaces 2016; 141:499-506. [DOI: 10.1016/j.colsurfb.2016.02.028] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 02/01/2016] [Accepted: 02/10/2016] [Indexed: 10/22/2022]
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9 |
41 |
13
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Wachtler F, Schöfer C, Mosgöller W, Weipoltshammer K, Schwarzacher HG, Guichaoua M, Hartung M, Stahl A, Bergé-Lefranc JL, Gonzalez I. Human ribosomal RNA gene repeats are localized in the dense fibrillar component of nucleoli: light and electron microscopic in situ hybridization in human Sertoli cells. Exp Cell Res 1992; 198:135-43. [PMID: 1727047 DOI: 10.1016/0014-4827(92)90159-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The distribution of the human ribosomal gene repeat within human Sertoli cell nucleoli was investigated with the help of DNA-DNA in situ hybridization at the light and electron microscopic level. Probes from both the transcribed part of the gene repeat and the "non-transcribed" spacer were found to hybridize predominantly to the dense fibrillar component of nucleoli. It therefore can be concluded that the dense fibrillar component of nucleoli is the major site of the intranucleolar location of the ribosomal DNA. This holds true not only for the dense fibrillar component adjacent to fibrillar centers, but also for the dense fibrillar component remote from the fibrillar centers.
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33 |
39 |
14
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Alvarez-Arenal A, Junquera LM, Fernandez JP, Gonzalez I, Olay S. Effect of occlusal splint and transcutaneous electric nerve stimulation on the signs and symptoms of temporomandibular disorders in patients with bruxism. J Oral Rehabil 2002; 29:858-63. [PMID: 12366541 DOI: 10.1046/j.1365-2842.2002.00923.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A crossed-design experimental study has been made involving simple blind paired data and random assignment to treatment, with the aim of evaluating the action of an occlusal splint with transcutaneous electric nerve stimulation (TENS) upon the manifestations of temporomandibular disorders (TMD) in patients with bruxism. The prevalence of TMD in the 24 patients with bruxism was 62.5%%; the corresponding severity, as determined by the pantographic reproducibility index (PRI), was mild (mean value: 20.71). Clicking and pain in the lateral pterygoid muscle were the most frequent clinical manifestations. The occlusal splint and TENS did not significantly improve the signs and symptoms of TMD in these patients with bruxism.
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Clinical Trial |
23 |
38 |
15
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Holmes SE, Riazi MA, Gong W, McDermid HE, Sellinger BT, Hua A, Chen F, Wang Z, Zhang G, Roe B, Gonzalez I, McDonald-McGinn DM, Zackai E, Emanuel BS, Budarf ML. Disruption of the clathrin heavy chain-like gene (CLTCL) associated with features of DGS/VCFS: a balanced (21;22)(p12;q11) translocation. Hum Mol Genet 1997; 6:357-67. [PMID: 9147638 DOI: 10.1093/hmg/6.3.357] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The smallest region of deletion overlap in the patients we have studied defines a DIGeorge syndrome/velocardiofacial syndrome (DGS/VCFS) minimal critical region (MDGCR) of approximately 250 kb within 22q11. A de novo constitutional balanced translocation has been identified within the MDGCR. The patient has some features which have been reported in individuals with DGS/VCFS, including: facial dysmorphia, mental retardation, long slender digits and genital anomalies. We have cloned the breakpoint of his translocation and shown that it interrupts the clathrin heavy chain-like gene (CLTCL) within the MDGCR. The breakpoint of the translocation partner is in a repeated region telomeric to the rDNA cluster on chromosome 21p. Therefore, it is unlikely that the patient's findings are caused by interruption of sequences on 21p. The chromosome 22 breakpoint disrupts the 3' coding region of the CLTCL gene and leads to a truncated transcript, strongly suggesting a role for this gene in the features found in this patient. Further, the patient's partial DGS/VCFS phenotype suggests that additional features of DGS/VCFS may be attributed to other genes in the MDGCR. Thus, haploinsufficiency for more than one gene in the MDGCR may be etiologic for DGS/VCFS.
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MESH Headings
- Abnormalities, Multiple/genetics
- Base Sequence
- Cells, Cultured
- Child, Preschool
- Chromosome Mapping
- Chromosomes, Human, Pair 21/genetics
- Chromosomes, Human, Pair 22/genetics
- Clathrin/genetics
- Clathrin Heavy Chains
- Cloning, Molecular
- Craniofacial Abnormalities/genetics
- DiGeorge Syndrome/genetics
- Heart Defects, Congenital/genetics
- Humans
- In Situ Hybridization, Fluorescence
- Karyotyping
- Male
- Molecular Sequence Data
- Syndrome
- Translocation, Genetic
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Case Reports |
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16
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Carrera E, Garcia T, Cespedes A, Gonzalez I, Fernandez A, Hernandez P, Martin R. Salmon and Trout Analysis by PCR-RFLP for Identity Authentication. J Food Sci 1999. [DOI: 10.1111/j.1365-2621.1999.tb15053.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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26 |
36 |
17
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Fernandez A, Garcia T, Asensio L, Rodriguez M, Gonzalez I, Hernandez P, Martin. R. PCR-RFLP Analysis of the Internal Transcribed Spacer (ITS) Region for Identification of 3 Clam Species. J Food Sci 2001. [DOI: 10.1111/j.1365-2621.2001.tb04617.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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24 |
36 |
18
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Audicana M, Bernedo N, Gonzalez I, Muñoz D, Fernández E, Gastaminza G. An unusual case of baboon syndrome due to mercury present in a homeopathic medicine. Contact Dermatitis 2001; 45:185. [PMID: 11553159 DOI: 10.1034/j.1600-0536.2001.045003185.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Case Reports |
24 |
35 |
19
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Fernández-Garayzábal JF, Collins MD, Hutson RA, Gonzalez I, Fernández E, Domínguez L. Corynebacterium camporealensis sp. nov., associated with subclinical mastitis in sheep. INTERNATIONAL JOURNAL OF SYSTEMATIC BACTERIOLOGY 1998; 48 Pt 2:463-8. [PMID: 9731285 DOI: 10.1099/00207713-48-2-463] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Four strains of a hitherto-unknown catalase-positive, facultatively anaerobic Corynebacterium species were isolated from the milk of sheep affected by subclinical mastitis. The most characteristic phenotypic reactions of the four strains were their weak fermentative acid production from glucose, their failure to produce acid from mannitol, xylose, sucrose and maltose, and a strong CAMP reaction with Staphylococcus aureus. Chemotaxonomic investigations revealed the presence of a cell wall based on meso-diaminopimelic acid and short-chain mycolic acids, which is consistent with the genus Corynebacterium. A comparative 16S rRNA gene sequence analysis confirmed that the organisms from sheep were members of the genus Corynebacterium, where they formed a distinct subline, exhibiting > 4% sequence divergence with other known Corynebacterium species. Based on both phenotypic and phylogenetic findings, a new species, Corynebacterium camporealensis, is proposed. The type strain of Corynebacterium camporealensis is CECT 4897 (= CRS-51T).
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27 |
34 |
20
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Rojas A, Gonzalez I, Morales MA. SARS-CoV-2-mediated inflammatory response in lungs: should we look at RAGE? Inflamm Res 2020; 69:641-643. [PMID: 32372149 PMCID: PMC7200049 DOI: 10.1007/s00011-020-01353-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 04/21/2020] [Accepted: 04/27/2020] [Indexed: 02/07/2023] Open
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brief-report |
5 |
33 |
21
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Lee K, Dixon AK, Gonzalez I, Stevens EB, McNulty S, Oles R, Richardson PJ, Pinnock RD, Singh L. Bombesin-like peptides depolarize rat hippocampal interneurones through interaction with subtype 2 bombesin receptors. J Physiol 1999; 518 ( Pt 3):791-802. [PMID: 10420015 PMCID: PMC2269471 DOI: 10.1111/j.1469-7793.1999.0791p.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
1. Whole-cell patch-clamp recordings were made from visually identified hippocampal interneurones in slices of rat brain tissue in vitro. Bath application of the bombesin-like neuropeptides gastrin-releasing peptide (GRP) or neuromedin B (NMB) produced a large membrane depolarization that was blocked by pre-incubation with the subtype 2 bombesin (BB2) receptor antagonist [D-Phe6, Des-Met14]bombesin-(6-14)ethyl amide. 2. The inward current elicited by NMB or GRP was unaffected by K+ channel blockade with external Ba2+ or by replacement of potassium gluconate in the electrode solution with caesium acetate. 3. Replacement of external NaCl with Tris-HCl significantly reduced the magnitude of the GRP-induced current at -60 mV. In contrast, replacement of external NaCl with LiCl had no effect on the magnitude of this current. 4. Photorelease of caged GTPgammaS inside neurones irreversibly potentiated the GRP-induced current at -60 mV. Similarly, bath application of the phospholipase C (PLC) inhibitor U-73122 significantly reduced the size of the inward current induced by GRP. 5. Reverse transcription followed by the polymerase chain reaction using cytoplasm from single hippocampal interneurones demonstrated the expression of BB2 receptor mRNA together with glutamate decarboxylase (GAD67). 6. Although bath application of GRP or NMB had little or no effect on the resting membrane properties of CA1 pyramidal cells per se, these neuropeptides produced a dramatic increase in the number and amplitude of miniature inhibitory postsynaptic currents in these cells in a TTX-sensitive manner.
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research-article |
26 |
29 |
22
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Gonzalez I, Lopez M, Mazas M, Gonzalez J, Bernardo A. The effect of recovery conditions on the apparent heat resistance of Bacillus cereus spores. THE JOURNAL OF APPLIED BACTERIOLOGY 1995; 78:548-54. [PMID: 7759384 DOI: 10.1111/j.1365-2672.1995.tb03098.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The effect of recovery media and incubation temperature on the apparent heat resistance of three ATCC strains (4342, 7004 and 9818) of Bacillus cereus spores were studied. Nutrient Agar (NA), Tryptic Soy Agar (TSA), Plate Count Agar (PCA) and Milk Agar (MA) as the media and temperatures in the range of 15-40 degrees C were used to recover heated spores. Higher counts of heat injured spores were obtained on PCA and NA. The optimum subculture temperature was about 5 degrees C below the optimum temperature for unheated spores. No significant differences in heat resistance were observed with the different recovery conditions except for strains 4342 and 9818 when MA was used as plating medium. Large differences in D-values were found among the strains (D100 = 0.28 min for 7004; D100 = 0.99 min for 4342; D100 = 4.57 min for 9818). The 7004 strain showed a sub-population with a greater heat resistance. The z values obtained for the three strains studied under the different recovery conditions were similar (7.64 degrees C +/- 0.25).
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Escobal A, Iriondo C, Laborra C, Elejalde E, Gonzalez I. Determination of acids and volatile compounds in red Txakoli wine by high-performance liquid chromatography and gas chromatography. J Chromatogr A 1998; 823:349-54. [PMID: 9818411 DOI: 10.1016/s0021-9673(98)00468-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Txakoli is a wine from the north of Spain with acid characteristics and medium ethanol content. We report the comparative results obtained from red Txakoli elaborated with different grape varieties. We have used chromatographic methods for the characterization of this wine. The volatile compounds were analyzed the means of gas chromatography and the organic acid content was determined by a newly validated liquid chromatographic procedure. The aim of this study is to characterize the red Txakoli and to know the major differences between Hondarrabi Beltza grape variety and the other varieties. Hondarrabi Beltza grape variety is the one which was awarded the Generic Label. The major differences observed in the samples obtained from Hondarrabi Beltza variety are their higher contents in ethanol, propanol, ethyl acetate and tartaric and malic acids.
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Feehally J, Gilmore I, Barasi S, Bosomworth M, Christie B, Davies A, Dhesi J, Dowdle R, Gibbins C, Gonzalez I, Harding S, Lamont D, Murphy G, Ostermann M, Parr J, Stevens PE. RCPE UK consensus conference statement: Management of acute kidney injury: the role of fluids, e-alerts and biomarkers. J R Coll Physicians Edinb 2013; 43:37-8. [PMID: 23516690 DOI: 10.4997/jrcpe.2013.109] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Molina-Holgado F, Alvarez FJ, Gonzalez I, Antonio MT, Leret ML. Maternal exposure to delta 9-tetrahydrocannabinol (delta 9-THC) alters indolamine levels and turnover in adult male and female rat brain regions. Brain Res Bull 1997; 43:173-8. [PMID: 9222530 DOI: 10.1016/s0361-9230(96)00434-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Perinatal exposure to delta 9-THC has been shown to produce effects on brain development. In this study we evaluated the changes induced by maternal exposure to delta 9-THC (5 mg/kg per day) from gestational day 5 to postnatal day 24 in eight discrete brain areas on the central serotoninergic system in both adult male and female rats. These result show that maternal exposure to delta 9-THC from gestational day 5 to postnatal day 24 affects development of the various central indoleaminergic system of the offsprings brain. Perinatal exposure to delta 9-THC decreased the levels of 5-HT in hypothalamus and rostral neostriatum in exposed males, and also decreased the levels of 5-HT in ventral hippocampus, septum, and midbrain raphe nuclei in both exposed males and females. Perinatal exposure to delta 9-THC increased the levels of 5-HIAA in dorsal hippocampus, hypothalamus, septum, midbrain raphe nuclei, and rostral neostriatum in exposed males and females. We have also found differences between nonexposed males and females in several brain regions. Our results confirm a regional and sexual specificity in endogenous levels of indoleamine after perinatal delta 9-THC treatment, being the midbrain raphe nuclei the most affected area.
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