Rodriguez A

References (8)

Title : An intercommunicated nanosystem for dual delivery - Mayol_2023_J.Mater.Chem.B__
Author(s) : Mayol B , Rodriguez A , Villalonga A , Anillo C , Vilela D , Sanchez A , Martinez-Ruiz P , Villalonga R
Ref : J Mater Chem B , : , 2023
Abstract : Here, we describe the design of a novel particle-to-particle intercommunicated nanosystem for dual delivery, triggered by physical and chemical inputs. The nanosystem was composed of an Au-mesoporous silica Janus nanoparticle loaded with paracetamol, mechanized with light-sensitive supramolecular gates at the mesoporous face and functionalized on the metal surface with the enzyme acetylcholinesterase. The second component was a mesoporous silica nanoparticle loaded with rhodamine B and gated with thiol-sensitive ensembles. Upon irradiation of this nanosystem with a near-UV light laser, an analgesic drug was released from the Janus nanomachine due to disassembling of the photosensitive gating mechanism. Further addition of N-acetylthiocholine leads to the enzymatic production of thiocholine at the Janus nanomachine, thus acting as a "chemical messenger" causing the disruption of the gating mechanism at the second mesoporous silica nanoparticle with the subsequent dye release.
ESTHER : Mayol_2023_J.Mater.Chem.B__
PubMedSearch : Mayol_2023_J.Mater.Chem.B__
PubMedID: 37417457

Title : Vapor inhalation exposure to soman in conscious untreated rats: preliminary assessment of neurotoxicity - Perkins_2016_Inhal.Toxicol_28_14
Author(s) : Perkins MW , Wong B , Rodriguez A , Devorak JL , Dao TT , Leuschner JA , Kan RK , Sciuto AM
Ref : Inhal Toxicol , 28 :14 , 2016
Abstract : Neurological toxicity and brain injury following vapor inhalation exposure to the chemical warfare nerve agent (CWNA) soman (GD) were examined in untreated non-anesthetized rats. In this study, male Sprague-Dawley rats (300-350 g) were exposed to 600 mg x min/m(3) of soman or vehicle in a customized head-out inhalation system for 7 min. Convulsant animals were observed for clinical signs and various regions of the brain (dorsolateral thalamus, basolateral amygdala, piriform cortex, and lateral cortex) were collected for pathological observations 24 h post-exposure. Signs of CWNA-induced cholinergic crises including salivation, lacrimation, increased urination and defecation, and tremors were observed in all soman-exposed animals. Soman-exposed animals at 24 h post-exposure lost 11% of their body weight in comparison to 2% in vehicle-exposed animals. Whole blood acetylcholinesterase (AChE) activity was significantly inhibited in all soman-exposed groups in comparison to controls. Brain injury was confirmed by the neurological assessment of hematoxylin-eosin (H&E) staining and microscopy in the piriform cortex, dorsolateral thalamus, basolateral amygdala, and lateral cortex. Severe damage including prominent lesions, edematous, congested, and/or hemorrhagic tissues was observed in the piriform cortex, dorsolateral thalamus, and lateral cortex in soman-exposed animals 24 h post-exposure, while only minimal damage was observed in the basolateral amygdala. These results indicate that inhalation exposure to soman vapor causes neurological toxicity and brain injury in untreated unanesthetized rats. This study demonstrates the ability of the described soman vapor inhalation exposure model to cause neurological damage 24 h post-exposure in rats.
ESTHER : Perkins_2016_Inhal.Toxicol_28_14
PubMedSearch : Perkins_2016_Inhal.Toxicol_28_14
PubMedID: 26711353

Title : Regulation of adipocyte lipolysis - Fruhbeck_2014_Nutr.Res.Rev_27_63
Author(s) : Fruhbeck G , Mendez-Gimenez L , Fernandez-Formoso JA , Fernandez S , Rodriguez A
Ref : Nutr Res Rev , 27 :63 , 2014
Abstract : In adipocytes the hydrolysis of TAG to produce fatty acids and glycerol under fasting conditions or times of elevated energy demands is tightly regulated by neuroendocrine signals, resulting in the activation of lipolytic enzymes. Among the classic regulators of lipolysis, adrenergic stimulation and the insulin-mediated control of lipid mobilisation are the best known. Initially, hormone-sensitive lipase (HSL) was thought to be the rate-limiting enzyme of the first lipolytic step, while we now know that adipocyte TAG lipase is the key enzyme for lipolysis initiation. Pivotal, previously unsuspected components have also been identified at the protective interface of the lipid droplet surface and in the signalling pathways that control lipolysis. Perilipin, comparative gene identification-58 (CGI-58) and other proteins of the lipid droplet surface are currently known to be key regulators of the lipolytic machinery, protecting or exposing the TAG core of the droplet to lipases. The neuroendocrine control of lipolysis is prototypically exerted by catecholaminergic stimulation and insulin-induced suppression, both of which affect cyclic AMP levels and hence the protein kinase A-mediated phosphorylation of HSL and perilipin. Interestingly, in recent decades adipose tissue has been shown to secrete a large number of adipokines, which exert direct effects on lipolysis, while adipocytes reportedly express a wide range of receptors for signals involved in lipid mobilisation. Recently recognised mediators of lipolysis include some adipokines, structural membrane proteins, atrial natriuretic peptides, AMP-activated protein kinase and mitogen-activated protein kinase. Lipolysis needs to be reanalysed from the broader perspective of its specific physiological or pathological context since basal or stimulated lipolytic rates occur under diverse conditions and by different mechanisms.
ESTHER : Fruhbeck_2014_Nutr.Res.Rev_27_63
PubMedSearch : Fruhbeck_2014_Nutr.Res.Rev_27_63
PubMedID: 24872083

Title : Inhalation toxicity of soman vapor in non-anesthetized rats: A preliminary assessment of inhaled bronchodilator or steroid therapy - Perkins_2013_Chem.Biol.Interact_206_452
Author(s) : Perkins MW , Wong B , Rodriguez A , Devorak JL , Alves DA , Murphy G , Sciuto AM
Ref : Chemico-Biological Interactions , 206 :452 , 2013
Abstract : Respiratory toxicity, injury and treatment following vapor inhalational exposure to the chemical warfare nerve agent (CWNA) soman (GD) were examined in non-anesthetized rats. This study exposed male Sprague-Dawley rats (250-300g) to 520, 560, 600, 825 or 1410mgxmin/m(3) of soman in a customized head-out inhalation system. Signs of CWNA-induced cholinergic crises were observed in all soman-exposed animals. The LCt50 of vaporized soman as determined by probit analysis was 593.1mgxmin/m(3). All animals exposed to 825 and 1410mgxmin/m(3) developed severe convulsions and died within 4-8min post-exposure. Edema measured by wet/dry weight ratio of the left lung lobe increased in a dose-dependent manner in all soman-exposed animals. Bronchoalveolar lavage (BAL) fluid and blood acetylcholinesterase (AChE) activities were inhibited dose-dependently in soman-exposed groups at 24h. A significant increase in total BAL protein was observed in soman-exposed animals at all doses. AChE activity was inhibited in lung and whole brain tissues in all soman-exposed animals. Histopathological analysis of the lungs of animals exposed to 600mgxmin/m(3) of soman revealed prominent morphological changes including alveolar histiocytosis, hemorrhage and inflammation consisting of neutrophilic exudate. Exposure of animals to 600mgxmin/m(3) of soman followed by treatment with two actuations for 10s of Combivent (21mug of ipratropium bromide and 120mug of albuterol sulfate) and Symbicort (80mug budesonide and 4.5mug formoterol) by inhalation into a modified metered dose inhaler (MDI) 10min post-exposure resulted in increased minute volume, but did not decrease mortality. These results indicate that inhalation exposure to soman vapor causes acute respiratory toxicity and injury in untreated, un-anesthetized rats and that inhalation treatment with Combivent or Symbicort did improve the respiratory outcomes, but did not influence lethality.
ESTHER : Perkins_2013_Chem.Biol.Interact_206_452
PubMedSearch : Perkins_2013_Chem.Biol.Interact_206_452
PubMedID: 23886498

Title : Acylated and desacyl ghrelin stimulate lipid accumulation in human visceral adipocytes - Rodriguez_2009_Int.J.Obes.(Lond)_33_541
Author(s) : Rodriguez A , Gomez-Ambrosi J , Catalan V , Gil MJ , Becerril S , Sainz N , Silva C , Salvador J , Colina I , Fruhbeck G
Ref : Int J Obes (Lond) , 33 :541 , 2009
Abstract : OBJECTIVES: The orexigenic hormone ghrelin circulates mainly in two forms, acylated and desacyl ghrelin. We evaluated the impact of obesity and obesity-associated type 2 diabetes (T2D) on ghrelin forms and the potential role of acylated and desacyl ghrelin in the control of adipogenesis in humans. METHODS: Plasma concentrations of the different ghrelin forms were measured in 80 subjects. The expression of the ghrelin receptor (growth hormone secretagogue receptor, GHS-R) was analyzed in omental adipose tissue using western blot and immunohistochemistry, and the effect of acylated ghrelin and desacyl ghrelin (0.1-1000 pmol l(-1)) on adipogenesis was determined in vitro in omental adipocytes. RESULTS: Circulating concentrations of acylated ghrelin were increased, whereas desacyl ghrelin levels were decreased, in obesity and obesity-associated T2D. Body mass index, waist circumference, insulin and HOMA (homeostasis model assessment) index were positively correlated with acylated ghrelin levels. Obese individuals showed a lower protein expression of GHS-R in omental adipose tissue. In differentiating omental adipocytes, incubation with both acylated and desacyl ghrelin significantly increased PPARgamma (peroxisome proliferator-activated receptor gamma) and SREBP1 (sterol-regulatory element binding protein-1) mRNA levels, as well as several fat storage-related proteins, including acetyl-CoA carboxylase, fatty acid synthase, lipoprotein lipase and perilipin. Consequently, both the ghrelin forms stimulated intracytoplasmatic lipid accumulation. CONCLUSIONS: Both acylated and desacyl ghrelin stimulate lipid accumulation in human visceral adipocytes. Given the lipogenic effect of acylated ghrelin on visceral adipocytes, the herein-reported elevation of its circulating concentrations in obese individuals may play a role in excessive fat accumulation in obesity.
ESTHER : Rodriguez_2009_Int.J.Obes.(Lond)_33_541
PubMedSearch : Rodriguez_2009_Int.J.Obes.(Lond)_33_541
PubMedID: 19238155

Title : The sequence and analysis of duplication-rich human chromosome 16 - Martin_2004_Nature_432_988
Author(s) : Martin J , Han C , Gordon LA , Terry A , Prabhakar S , She X , Xie G , Hellsten U , Chan YM , Altherr M , Couronne O , Aerts A , Bajorek E , Black S , Blumer H , Branscomb E , Brown NC , Bruno WJ , Buckingham JM , Callen DF , Campbell CS , Campbell ML , Campbell EW , Caoile C , Challacombe JF , Chasteen LA , Chertkov O , Chi HC , Christensen M , Clark LM , Cohn JD , Denys M , Detter JC , Dickson M , Dimitrijevic-Bussod M , Escobar J , Fawcett JJ , Flowers D , Fotopulos D , Glavina T , Gomez M , Gonzales E , Goodstein D , Goodwin LA , Grady DL , Grigoriev I , Groza M , Hammon N , Hawkins T , Haydu L , Hildebrand CE , Huang W , Israni S , Jett J , Jewett PB , Kadner K , Kimball H , Kobayashi A , Krawczyk MC , Leyba T , Longmire JL , Lopez F , Lou Y , Lowry S , Ludeman T , Manohar CF , Mark GA , McMurray KL , Meincke LJ , Morgan J , Moyzis RK , Mundt MO , Munk AC , Nandkeshwar RD , Pitluck S , Pollard M , Predki P , Parson-Quintana B , Ramirez L , Rash S , Retterer J , Ricke DO , Robinson DL , Rodriguez A , Salamov A , Saunders EH , Scott D , Shough T , Stallings RL , Stalvey M , Sutherland RD , Tapia R , Tesmer JG , Thayer N , Thompson LS , Tice H , Torney DC , Tran-Gyamfi M , Tsai M , Ulanovsky LE , Ustaszewska A , Vo N , White PS , Williams AL , Wills PL , Wu JR , Wu K , Yang J , DeJong P , Bruce D , Doggett NA , Deaven L , Schmutz J , Grimwood J , Richardson P , Rokhsar DS , Eichler EE , Gilna P , Lucas SM , Myers RM , Rubin EM , Pennacchio LA
Ref : Nature , 432 :988 , 2004
Abstract : Human chromosome 16 features one of the highest levels of segmentally duplicated sequence among the human autosomes. We report here the 78,884,754 base pairs of finished chromosome 16 sequence, representing over 99.9% of its euchromatin. Manual annotation revealed 880 protein-coding genes confirmed by 1,670 aligned transcripts, 19 transfer RNA genes, 341 pseudogenes and three RNA pseudogenes. These genes include metallothionein, cadherin and iroquois gene families, as well as the disease genes for polycystic kidney disease and acute myelomonocytic leukaemia. Several large-scale structural polymorphisms spanning hundreds of kilobase pairs were identified and result in gene content differences among humans. Whereas the segmental duplications of chromosome 16 are enriched in the relatively gene-poor pericentromere of the p arm, some are involved in recent gene duplication and conversion events that are likely to have had an impact on the evolution of primates and human disease susceptibility.
ESTHER : Martin_2004_Nature_432_988
PubMedSearch : Martin_2004_Nature_432_988
PubMedID: 15616553
Gene_locus related to this paper: human-CES1 , human-CES2 , human-CES3 , human-CES4A , human-CES5A

Title : The DNA sequence and biology of human chromosome 19 - Grimwood_2004_Nature_428_529
Author(s) : Grimwood J , Gordon LA , Olsen A , Terry A , Schmutz J , Lamerdin J , Hellsten U , Goodstein D , Couronne O , Tran-Gyamfi M , Aerts A , Altherr M , Ashworth L , Bajorek E , Black S , Branscomb E , Caenepeel S , Carrano A , Caoile C , Chan YM , Christensen M , Cleland CA , Copeland A , Dalin E , Dehal P , Denys M , Detter JC , Escobar J , Flowers D , Fotopulos D , Garcia C , Georgescu AM , Glavina T , Gomez M , Gonzales E , Groza M , Hammon N , Hawkins T , Haydu L , Ho I , Huang W , Israni S , Jett J , Kadner K , Kimball H , Kobayashi A , Larionov V , Leem SH , Lopez F , Lou Y , Lowry S , Malfatti S , Martinez D , McCready P , Medina C , Morgan J , Nelson K , Nolan M , Ovcharenko I , Pitluck S , Pollard M , Popkie AP , Predki P , Quan G , Ramirez L , Rash S , Retterer J , Rodriguez A , Rogers S , Salamov A , Salazar A , She X , Smith D , Slezak T , Solovyev V , Thayer N , Tice H , Tsai M , Ustaszewska A , Vo N , Wagner M , Wheeler J , Wu K , Xie G , Yang J , Dubchak I , Furey TS , DeJong P , Dickson M , Gordon D , Eichler EE , Pennacchio LA , Richardson P , Stubbs L , Rokhsar DS , Myers RM , Rubin EM , Lucas SM
Ref : Nature , 428 :529 , 2004
Abstract : Chromosome 19 has the highest gene density of all human chromosomes, more than double the genome-wide average. The large clustered gene families, corresponding high G + C content, CpG islands and density of repetitive DNA indicate a chromosome rich in biological and evolutionary significance. Here we describe 55.8 million base pairs of highly accurate finished sequence representing 99.9% of the euchromatin portion of the chromosome. Manual curation of gene loci reveals 1,461 protein-coding genes and 321 pseudogenes. Among these are genes directly implicated in mendelian disorders, including familial hypercholesterolaemia and insulin-resistant diabetes. Nearly one-quarter of these genes belong to tandemly arranged families, encompassing more than 25% of the chromosome. Comparative analyses show a fascinating picture of conservation and divergence, revealing large blocks of gene orthology with rodents, scattered regions with more recent gene family expansions and deletions, and segments of coding and non-coding conservation with the distant fish species Takifugu.
ESTHER : Grimwood_2004_Nature_428_529
PubMedSearch : Grimwood_2004_Nature_428_529
PubMedID: 15057824

Title : A genetic linkage map for the zebrafish - Postlethwait_1994_Science_264_699
Author(s) : Postlethwait JH , Johnson SL , Midson CN , Talbot WS , Gates M , Ballinger EW , Africa D , Andrews R , Carl T , Eisen JS , Horne S , Kimmel CB , Hutchinson M , Johnson M , Rodriguez A
Ref : Science , 264 :699 , 1994
Abstract : To facilitate molecular genetic analysis of vertebrate development, haploid genetics was used to construct a recombination map for the zebrafish Danio (Brachydanio) rerio. The map consists of 401 random amplified polymorphic DNAs (RAPDs) and 13 simple sequence repeats spaced at an average interval of 5.8 centimorgans. Strategies that exploit the advantages of haploid genetics and RAPD markers were developed that quickly mapped lethal and visible mutations and that placed cloned genes on the map. This map is useful for the position-based cloning of mutant genes, the characterization of chromosome rearrangements, and the investigation of evolution in vertebrate genomes.
ESTHER : Postlethwait_1994_Science_264_699
PubMedSearch : Postlethwait_1994_Science_264_699
PubMedID: 8171321