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Juanes A, Ruíz J, Puig M, Blázquez M, Gilabert A, López L, Baena MI, Guiu JM, Antònia Mangues M. The Effect of the Drug-Related Problems Prevention Bundle on Early Readmissions in Patients From the Emergency Department: A Randomized Clinical Trial. Ann Pharmacother 2023; 57:1025-1035. [PMID: 36539949 DOI: 10.1177/10600280221143237] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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] [Indexed: 08/10/2023] Open
Abstract
BACKGROUND Drug-related problems (DRPs) are prevalent and avoidable disease that patients experience due to drug use or nonuse. However, secondary prevention policies have not yet been systematized. OBJECTIVE To assess the clinical impact of a secondary prevention bundle for DRPs in patients who visited the emergency department (ED) for medicine-related problems. METHODS A single-center randomized clinical trial was conducted from August 28, 2019, to January 28, 2021, with 1-month follow-up. We included 769 adult patients who visited ED with a DRP associated with cardiovascular, alimentary tract, and metabolic system medications. For the intervention group, a DRP prevention bundle, consisting of a combined strategy initiated in the ED was applied. Patients in the control group received standard pharmaceutical care. Intervention was evaluated in terms of 30-day hospital readmission due to any cause. RESULTS Final analysis included 769 patients, of which 68 (8.8%) were readmitted within 30 days (control group, 40 of 386 [cumulative incidence: 10.4%]; intervention group, 28 of 383 [cumulative incidence, 7.3%]). After adjustment of the model for chronic heart failure, there was a lower incidence of hospital readmission among patients in the intervention group compared with those in the control group, odds ratio: 0.59 [95% confidence interval: 0.37-0.97]; number needed to treat (NNT) = 32. No significant differences in other outcomes were observed. CONCLUSION AND RELEVANCE In this clinical trial, DRP prevention bundle in adjusted analysis decreased the rate of 30-day hospital readmission for any cause in patients who visited ED for a DRP. TRIAL REGISTRATION ClinicalTrials.gov (Identifier: NCT03607097).
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Affiliation(s)
- Ana Juanes
- Department of Pharmacy, Sant Pau Biomedical Research Institute (IIB Sant Pau), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Autonomous University of Barcelona, Bellaterra, Spain
| | - Jesús Ruíz
- Department of Pharmacy, Sant Pau Biomedical Research Institute (IIB Sant Pau), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Autonomous University of Barcelona, Bellaterra, Spain
| | - Mireia Puig
- Autonomous University of Barcelona, Bellaterra, Spain
- Department of Emergency, Sant Pau Biomedical Research Institute (IIB Sant Pau), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Marta Blázquez
- Autonomous University of Barcelona, Bellaterra, Spain
- Department of Emergency, Sant Pau Biomedical Research Institute (IIB Sant Pau), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Antoni Gilabert
- Catalan Healthcare Consortium, Catalan Health Service, Barcelona, Spain
| | - Laia López
- Department of Pharmacy, Sant Pau Biomedical Research Institute (IIB Sant Pau), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Autonomous University of Barcelona, Bellaterra, Spain
| | - M Isabel Baena
- Pharmaceutical Care Research Group, University of Granada, Granada, Spain
| | - Josep M Guiu
- Catalan Healthcare Consortium, Catalan Health Service, Barcelona, Spain
| | - Maria Antònia Mangues
- Department of Pharmacy, Sant Pau Biomedical Research Institute (IIB Sant Pau), Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
- Autonomous University of Barcelona, Bellaterra, Spain
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Delbes G, Blázquez M, Fernandino JI, Grigorova P, Hales BF, Metcalfe C, Navarro-Martín L, Parent L, Robaire B, Rwigemera A, Van Der Kraak G, Wade M, Marlatt V. Effects of endocrine disrupting chemicals on gonad development: Mechanistic insights from fish and mammals. Environ Res 2022; 204:112040. [PMID: 34509487 DOI: 10.1016/j.envres.2021.112040] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/03/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
Over the past century, evidence has emerged that endocrine disrupting chemicals (EDCs) have an impact on reproductive health. An increased frequency of reproductive disorders has been observed worldwide in both wildlife and humans that is correlated with accidental exposures to EDCs and their increased production. Epidemiological and experimental studies have highlighted the consequences of early exposures and the existence of key windows of sensitivity during development. Such early in life exposures can have an immediate impact on gonadal and reproductive tract development, as well as on long-term reproductive health in both males and females. Traditionally, EDCs were thought to exert their effects by modifying the endocrine pathways controlling reproduction. Advances in knowledge of the mechanisms regulating sex determination, differentiation and gonadal development in fish and rodents have led to a better understanding of the molecular mechanisms underlying the effects of early exposure to EDCs on reproduction. In this manuscript, we review the key developmental stages sensitive to EDCs and the state of knowledge on the mechanisms by which model EDCs affect these processes, based on the roadmap of gonad development specific to fish and mammals.
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Affiliation(s)
- G Delbes
- Centre Armand Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS), Laval, Canada.
| | - M Blázquez
- Institute of Marine Sciences (ICM-CSIC), Barcelona, Spain
| | - J I Fernandino
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Chascomús, Argentina
| | | | - B F Hales
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Canada
| | - C Metcalfe
- School of Environment, Trent University, Trent, Canada
| | - L Navarro-Martín
- Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Spain
| | - L Parent
- Université TELUQ, Montréal, Canada
| | - B Robaire
- Department of Pharmacology and Therapeutics, McGill University, Montreal, Canada; Department of Obstetrics and Gynecology, McGill University, Montreal, Canada
| | - A Rwigemera
- Centre Armand Frappier Santé Biotechnologie, Institut National de la Recherche Scientifique (INRS), Laval, Canada
| | - G Van Der Kraak
- Department of Integrative Biology, University of Guelph, Guelph, Canada
| | - M Wade
- Environmental Health Science & Research Bureau, Health Canada, Ottawa, Canada
| | - V Marlatt
- Department of Biological Sciences, Simon Fraser University, Burnaby, Canada
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Hernández-Moreno D, Blázquez M, Navas JM, Fernández-Cruz ML. Fish cell lines as screening tools to predict acute toxicity to fish of biocidal active substances and their relevant environmental metabolites. Aquat Toxicol 2022; 242:106020. [PMID: 34844051 DOI: 10.1016/j.aquatox.2021.106020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 11/05/2021] [Accepted: 11/07/2021] [Indexed: 06/13/2023]
Abstract
Biocidal substances and their environmental relevant metabolites are highly toxic for fish. However, an important scarcity of toxicity data for metabolites is recognised. This article provides new data about the toxicity to fish of these compounds and evaluates the potential use of fish cell lines as screening tools to assess the acute toxicity of these compounds in fish. To this aim, acute toxicity of 7 substances was tested in Oncorhynchus mykiss (OECD TG203) and cytotoxicity of 16 substances was assessed in fish cell lines from two species; Poeciliopsis lucida (PLHC-1) and O. mykiss (RTH-149, RTG-2 and RTgill-W1) performing three cytotoxicity tests: Alamar-Blue, 5-carboxyfluorescein diacetate, acetoxymethyl ester and Neutral Red Uptake. Additionally, in vitro and in vivo data from the LIFE-COMBASE database were included in a dataset finally comprising 33 biocides and 14 metabolites. Hazard data were categorized into 4 toxicity groups, according to the intervals established in Regulation (EC) 1272/2008. Finally, the Spearman correlation test was performed and coincidences between in vitro-in vivo data established. In vitro and in vivo results revealed a high positive correlation, with a complete coincidence for 56.5% of the substances, a 2% of false positives (non-toxic in vivo) and a 13% of false negatives (toxic in vivo) for the 4 toxicity categories. However, when results were grouped in toxic or non-toxic coincidence was obtained for 85% of the substances. In conclusion, although fish denote a greater sensitivity, the use of at least two fish cell lines and three cytotoxicity endpoints appear to be valid approaches for fish acute toxicity screening of biocides and their metabolites.
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Affiliation(s)
- D Hernández-Moreno
- National Institute of Agriculture and Food Research and Technology (INIA), Spanish National Research Council (CSIC), Department of Environment and Agronomy, Carretera de la Coruña Km 7 Madrid, Spain
| | - M Blázquez
- Inkoa Sistemas S.L. Polígono Industrial Ribera de Axpe, 11, Erandio, Vizcaya, Spain; CBET Research Group, Department of Zoology and Animal Cell Biology, Faculty of Science and Technology and Research Centre for Experimental Marine Biology and Biotechnology PIE, University of the Basque Country UPV/EHU, Basque Country, Spain
| | - J M Navas
- National Institute of Agriculture and Food Research and Technology (INIA), Spanish National Research Council (CSIC), Department of Environment and Agronomy, Carretera de la Coruña Km 7 Madrid, Spain
| | - M L Fernández-Cruz
- National Institute of Agriculture and Food Research and Technology (INIA), Spanish National Research Council (CSIC), Department of Environment and Agronomy, Carretera de la Coruña Km 7 Madrid, Spain.
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4
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Rosas I, Morís G, Coto E, Blázquez M, Suárez E, García-Fernández C, Siso P, Martínez C, Pérez-Oliveira S, Álvarez V, Menéndez-González M. Cancer in Parkinson's Disease: An Approximation to the Main Risk Factors. NEURODEGENER DIS 2021; 21:36-41. [PMID: 34673649 DOI: 10.1159/000520301] [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: 05/18/2021] [Accepted: 10/18/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Many evidences suggest a pathological link between neurodegenerative diseases and cancer. In fact, several epidemiologic studies indicate a decreased incidence of most cancer types in Parkinson's disease (PD) patients and some PD genes are involved in cancer networks. OBJECTIVE The aim of this study is to assess the influence of several factors in the risk of cancer in a cohort of 753 PD patients and to study how these variables interact with each other. METHODS We analyzed the effect of gender, tobacco, alcohol, type of PD (genetic or idiopathic PD), and two genetic variants, previously associated with cancer, rs5848-GRN and rs1042522-TP53. RESULTS A higher age at PD onset was observed in patients who develop cancer before PD (p < 0.001). Alcohol consumption was a risk factor to develop cancer in PD patients (p = 0.011), while smoking was not a cancer risk factor in our cohort (p = 0.098). Among the genetic factors, the genotype TT GRN-rs5848 was statistically more frequent in PD patients without cancer (p = 0.05). CONCLUSIONS Our study identified several factors, genetic and nongenetic, which contribute to the risk for cancer in PD.
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Affiliation(s)
- Irene Rosas
- Laboratorio de Genética, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Germán Morís
- Servicio de Neurología, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Eliecer Coto
- Laboratorio de Genética, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Marta Blázquez
- Servicio de Neurología, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Esther Suárez
- Servicio de Neurología, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Ciara García-Fernández
- Servicio de Neurología, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Pablo Siso
- Servicio de Neurología, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Carmen Martínez
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain.,Servicio de Neurología, Hospital Universitario de Cabueñes, Gijón, Spain
| | | | - Victoria Álvarez
- Laboratorio de Genética, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Manuel Menéndez-González
- Servicio de Neurología, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
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5
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Santos-García D, de Deus T, Cores C, Canfield H, Paz González JM, Martínez Miró C, Valdés Aymerich L, Suárez E, Jesús S, Aguilar M, Pastor P, Planellas L, Cosgaya M, García Caldentey J, Caballol N, Legarda I, Hernández-Vara J, Cabo I, López Manzanares L, González Aramburu I, Ávila Rivera MA, Catalán MJ, Nogueira V, Puente V, Dotor J, Borrué C, Solano B, Álvarez Sauco M, Vela L, Escalante S, Cubo E, Carrillo F, Martínez Castrillo JC, Sánchez Alonso P, Alonso G, López Ariztegui N, Gastón I, Kulisevsky J, Blázquez M, Seijo M, Rúiz Martínez J, Valero C, Kurtis M, de Fábregues O, Ardura J, Alonso R, Ordás C, López Díaz LM, McAfee D, Martinez-Martin P, Mir P. Predictors of Global Non-Motor Symptoms Burden Progression in Parkinson's Disease. Results from the COPPADIS Cohort at 2-Year Follow-Up. J Pers Med 2021; 11:626. [PMID: 34209166 PMCID: PMC8305732 DOI: 10.3390/jpm11070626] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 05/10/2021] [Revised: 06/26/2021] [Accepted: 06/28/2021] [Indexed: 12/25/2022] Open
Abstract
Background and Objective: Non-motor symptoms (NMS) progress in different ways between Parkinson's disease (PD) patients. The aim of the present study was to (1) analyze the change in global NMS burden in a PD cohort after a 2-year follow-up, (2) to compare the changes with a control group, and (3) to identify predictors of global NMS burden progression in the PD group. Material and Methods: PD patients and controls, recruited from 35 centers of Spain from the COPPADIS cohort from January 2016 to November 2017, were followed-up with after 2 years. The Non-Motor Symptoms Scale (NMSS) was administered at baseline (V0) and at 24 months ± 1 month (V2). Linear regression models were used for determining predictive factors of global NMS burden progression (NMSS total score change from V0 to V2 as dependent variable). Results: After the 2-year follow-up, the mean NMS burden (NMSS total score) significantly increased in PD patients by 18.8% (from 45.08 ± 37.62 to 53.55 ± 42.28; p < 0.0001; N = 501; 60.2% males, mean age 62.59 ± 8.91) compared to no change observed in controls (from 14.74 ± 18.72 to 14.65 ± 21.82; p = 0.428; N = 122; 49.5% males, mean age 60.99 ± 8.32) (p < 0.0001). NMSS total score at baseline (β = -0.52), change from V0 to V2 in PDSS (Parkinson's Disease Sleep Scale) (β = -0.34), and change from V0 to V2 in NPI (Neuropsychiatric Inventory) (β = 0.25) provided the highest contributions to the model (adjusted R-squared 0.41; Durbin-Watson test = 1.865). Conclusions: Global NMS burden demonstrates short-term progression in PD patients but not in controls and identifies worsening sleep problems and neuropsychiatric symptoms as significant independent predictors of this NMS progression.
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Affiliation(s)
- Diego Santos-García
- CHUAC, Complejo Hospitalario Universitario de A Coruña, 15006 A Coruña, Spain; (C.C.); (J.M.P.G.); (C.M.M.); (L.V.A.)
| | - Teresa de Deus
- CHUF, Complejo Hospitalario Universitario de Ferrol, 15405 A Coruña, Spain; (T.d.D.); (H.C.); (E.S.)
| | - Carlos Cores
- CHUAC, Complejo Hospitalario Universitario de A Coruña, 15006 A Coruña, Spain; (C.C.); (J.M.P.G.); (C.M.M.); (L.V.A.)
| | - Hector Canfield
- CHUF, Complejo Hospitalario Universitario de Ferrol, 15405 A Coruña, Spain; (T.d.D.); (H.C.); (E.S.)
| | - Jose M Paz González
- CHUAC, Complejo Hospitalario Universitario de A Coruña, 15006 A Coruña, Spain; (C.C.); (J.M.P.G.); (C.M.M.); (L.V.A.)
| | - Cristina Martínez Miró
- CHUAC, Complejo Hospitalario Universitario de A Coruña, 15006 A Coruña, Spain; (C.C.); (J.M.P.G.); (C.M.M.); (L.V.A.)
| | - Lorena Valdés Aymerich
- CHUAC, Complejo Hospitalario Universitario de A Coruña, 15006 A Coruña, Spain; (C.C.); (J.M.P.G.); (C.M.M.); (L.V.A.)
| | - Ester Suárez
- CHUF, Complejo Hospitalario Universitario de Ferrol, 15405 A Coruña, Spain; (T.d.D.); (H.C.); (E.S.)
| | - Silvia Jesús
- Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41009 Seville, Spain; (S.J.); (P.M.)
- CIBERNED (Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas), 28031 Madrid, Spain; (I.G.A.); (J.K.); (P.M.-M.)
| | - Miquel Aguilar
- Hospital Universitari Mutua de Terrassa, 08221 Barcelona, Spain; (M.A.); (P.P.)
| | - Pau Pastor
- Hospital Universitari Mutua de Terrassa, 08221 Barcelona, Spain; (M.A.); (P.P.)
| | - Lluis Planellas
- Hospital Clínic de Barcelona, 08036 Barcelona, Spain; (L.P.); (M.C.)
| | - Marina Cosgaya
- Hospital Clínic de Barcelona, 08036 Barcelona, Spain; (L.P.); (M.C.)
| | | | - Nuria Caballol
- Consorci Sanitari Integral, Hospital Moisés Broggi, 08970 Barcelona, Spain;
| | - Ines Legarda
- Hospital Universitario Son Espases, 07120 Palma de Mallorca, Spain;
| | - Jorge Hernández-Vara
- Hospital Universitario Vall d’Hebron, 08035 Barcelona, Spain; (J.H.-V.); (O.d.F.)
| | - Iria Cabo
- Complejo Hospitalario Universitario de Pontevedra (CHOP), 36071 Pontevedra, Spain; (I.C.); (M.S.)
| | | | - Isabel González Aramburu
- CIBERNED (Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas), 28031 Madrid, Spain; (I.G.A.); (J.K.); (P.M.-M.)
- Hospital Universitario Marqués de Valdecilla, 39011 Santander, Spain
| | - Maria A Ávila Rivera
- Consorci Sanitari Integral, Hospital General de L’Hospitalet, 08906 Barcelona, Spain;
| | - Maria J Catalán
- Hospital Universitario Clínico San Carlos, 28040 Madrid, Spain;
| | | | | | - Julio Dotor
- Hospital Universitario Virgen Macarena, 41009 Sevilla, Spain;
| | | | - Berta Solano
- Institut d’Assistència Sanitària (IAS)—Institut Català de la Salut, 17190 Girona, Spain;
| | | | - Lydia Vela
- Fundación Hospital de Alcorcón, 28922 Madrid, Spain;
| | - Sonia Escalante
- Hospital de Tortosa Verge de la Cinta (HTVC), 43500 Tarragona, Spain;
| | - Esther Cubo
- Complejo Asistencial Universitario de Burgos, 09006 Burgos, Spain;
| | - Francisco Carrillo
- Hospital Universitario de Canarias, 38320 San Cristóbal de la Laguna, Spain;
| | | | | | - Gemma Alonso
- Hospital Álvaro Cunqueiro, Complejo Hospitalario Universitario de Vigo (CHUVI), 36213 Vigo, Spain;
| | | | - Itziar Gastón
- Complejo Hospitalario de Navarra, 31008 Pamplona, Spain;
| | - Jaime Kulisevsky
- CIBERNED (Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas), 28031 Madrid, Spain; (I.G.A.); (J.K.); (P.M.-M.)
- Hospital de Sant Pau, 08041 Barcelona, Spain
| | - Marta Blázquez
- Hospital Universitario Central de Asturias, 33011 Oviedo, Spain;
| | - Manuel Seijo
- Complejo Hospitalario Universitario de Pontevedra (CHOP), 36071 Pontevedra, Spain; (I.C.); (M.S.)
| | | | | | | | - Oriol de Fábregues
- Hospital Universitario Vall d’Hebron, 08035 Barcelona, Spain; (J.H.-V.); (O.d.F.)
| | | | - Ruben Alonso
- Hospital Universitario Lucus Augusti (HULA), 27002 Lugo, Spain;
| | | | - Luis M López Díaz
- Complejo Hospitalario Universitario de Orense (CHUO), 32005 Orense, Spain;
| | - Darrian McAfee
- Laboratory for Cognition and Neural Stimulation, Univeristy of Pennsylvania, Philadelphia, PA 19104, USA;
| | - Pablo Martinez-Martin
- CIBERNED (Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas), 28031 Madrid, Spain; (I.G.A.); (J.K.); (P.M.-M.)
| | - Pablo Mir
- Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, 41009 Seville, Spain; (S.J.); (P.M.)
- CIBERNED (Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas), 28031 Madrid, Spain; (I.G.A.); (J.K.); (P.M.-M.)
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Marzo M, Lavado GJ, Como F, Toropova AP, Toropov AA, Baderna D, Cappelli C, Lombardo A, Toma C, Blázquez M, Benfenati E. QSAR models for biocides: The example of the prediction of Daphnia magna acute toxicity. SAR QSAR Environ Res 2020; 31:227-243. [PMID: 31941347 DOI: 10.1080/1062936x.2019.1709221] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 12/22/2019] [Indexed: 06/10/2023]
Abstract
Biocides are multi-component products used to control undesired and harmful organisms able to affect human or animal health or to damage natural and manufactured products. Because of their widespread use, aquatic and terrestrial ecosystems could be contaminated by biocides. The environmental impact of biocides is evaluated through eco-toxicological studies with model organisms of terrestrial and aquatic ecosystems. We focused on the development of in silico models for the evaluation of the acute toxicity (EC50) of a set of biocides collected from different sources on the freshwater crustacean Daphnia magna, one of the most widely used model organisms in aquatic toxicology. Toxicological data specific for biocides are limited, so we developed three models for daphnid toxicity using different strategies (linear regression, random forest, Monte Carlo (CORAL)) to overcome this limitation. All models gave satisfactory results in our datasets: the random forest model showed the best results with a determination coefficient r2 = 0.97 and 0.89, respectively, for the training (TS) and the validation sets (VS) while linear regression model and the CORAL model had similar but lower performance (r2 = 0.83 and 0.75, respectively, for TS and VS in the linear regression model and r2 = 0.74 and 0.75 for the CORAL model).
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Affiliation(s)
- M Marzo
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Milano, Italy
| | - G J Lavado
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Milano, Italy
| | - F Como
- REACHUP srl, Milano, Italy
| | - A P Toropova
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Milano, Italy
| | - A A Toropov
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Milano, Italy
| | - D Baderna
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Milano, Italy
| | - C Cappelli
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Milano, Italy
| | - A Lombardo
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Milano, Italy
| | - C Toma
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Milano, Italy
| | - M Blázquez
- Inkoa Sistemas S.L., Bilbao, Spain
- CBET Research Group, Department of Zoology and Animal Cell Biology; Faculty of Science and Technology and Research Centre for Experimental Marine Biology and Biotechnology PiE, University of the Basque Country UPV/EHU, Bilbao, Spain
| | - E Benfenati
- Department of Environmental Health Sciences, Istituto di Ricerche Farmacologiche Mario Negri IRCSS, Milano, Italy
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Blázquez M, Fernández-Cruz M, Gajewicz A, Puzyn T, Benfenati E. On the uses of predictive toxicology to approve the use of engineered nanomaterials as biocidal active substances under the Biocidal Products Regulation. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1757-899x/499/1/012007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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8
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Solé M, Mañanós E, Blázquez M. Vitellogenin, sex steroid levels and gonadal biomarkers in wild Solea solea and Solea senegalensis from NW Mediterranean fishing grounds. Mar Environ Res 2016; 117:63-74. [PMID: 27088613 DOI: 10.1016/j.marenvres.2016.03.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 03/23/2016] [Accepted: 03/29/2016] [Indexed: 06/05/2023]
Abstract
Specimens of Solea solea and Solea senegalenesis at different developmental stages were obtained from seven fishing grounds along the NW Mediterranean. Gonad development in males was classified into five stages, from early spermatogenesis to recovery, while four stages were considered in females, from growth to maturation. Vitellogenin (VTG) and sex steroid levels including an estrogen (estradiol, E2), two androgens (testosterone, T and 11-ketotestosterone, 11KT) and a progestin (17,20β-dihydroxy pregn-4-en-3-one, 17,20β-P or maturation inducing steroid, MIS) were analysed in plasma. Their levels were more clearly related to the developmental stage of the gonads than to the sampling site characteristics. In addition, enzyme activities in gonads, such as acetylcholinesterase (AChE) and carboxylesterase (CbE) were gender-dependent and higher in males than in females. Gonadal glutathione S-transferase (GST) activity was enhanced in the most anthropogenic impacted sites. VTG was absent in males and very low or undetectable in immature females, while mature females exhibited high VTG levels, clearly related to the gonado-somatic index. Sex steroid levels (ng/ml) varied in males and females regardless of the species. E2 levels in females ranged from 0.22 to 6.98 while in males ranged from 0.11 to 0.27. T varied from 0.12 to 0.93 in females and from 0.56 to 1.36 in males, while 11KT in females fluctuated from 0.03 to 0.57 and from 0.26 to 6.42 in males. Similarly, MIS in females ranged from 0.75 to 3.71 and from 1.12 to 5.61 in males. The lack of endocrine disturbances was confirmed by histological examination of the gonads. This study informs on basal sex hormone levels and enzyme activities during gonadal maturation of wild Solea spp. that can be useful in the identification and further remediation of possible pollution events.
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Affiliation(s)
- M Solé
- Institut de Ciencies del Mar (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003, Barcelona, Spain.
| | - E Mañanós
- Instituto de Acuicultura Torre la Sal (IATS-CSIC), Ribera de Cabanes s/n, 12595, Torre de la Sal, Castellón, Spain
| | - M Blázquez
- Institut de Ciencies del Mar (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003, Barcelona, Spain
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9
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Fernandes D, Dimastrogiovanni G, Blázquez M, Porte C. Metabolism of the polycyclic musk Galaxolide and its interference with endogenous and xenobiotic metabolizing enzymes in the sea bass (Dicentrarchus labrax). Comp Biochem Physiol A Mol Integr Physiol 2012. [DOI: 10.1016/j.cbpa.2012.05.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Gonzalez-Rodríguez J, Sevilla JM, Pineda T, Blázquez M. A comparative study of the electrochemical properties of vitamin B-6 related compounds at physiological pH. RUSS J ELECTROCHEM+ 2011. [DOI: 10.1134/s102319351107007x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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de Mena L, Coto E, Cardo LF, Díaz M, Blázquez M, Ribacoba R, Salvador C, Pastor P, Samaranch L, Moris G, Menéndez M, Corao AI, Alvarez V. Analysis of the Micro-RNA-133 and PITX3 genes in Parkinson's disease. Am J Med Genet B Neuropsychiatr Genet 2010; 153B:1234-9. [PMID: 20468068 DOI: 10.1002/ajmg.b.31086] [Citation(s) in RCA: 22] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
MicroRNAs are small RNA sequences that negatively regulate gene expression by binding to the 3' untranslated regions of mRNAs. MiR-133b has been implicated in Parkinson's disease (PD) by a mechanism that involves the regulation of the transcription factor PITX3. The variation in these genes could contribute to the risk of developing PD. We searched for DNA variants in miR-133 and PITX3 genes in PD patients and healthy controls from Spain. We found common DNA variants in the three miR-133 genes. Genotyping of a first set of patients (n = 777) and controls (n = 650) showed a higher frequency of homozygous for a miR-133b variant (-90 del A) in PD-patients (6/575; 1%) than in healthy controls (0/650) (P = 0.03). However, this association was not confirmed in a second set of patients (1/250; 0.4%) and controls (2/210; 1%). No common PITX3 variants were associated with PD, although a rare missense change (G32S) was found in only one patient and none of the controls. In conclusion, we report the variation in genes of a pathway that has been involved in dopaminergic neuron differentiation and survival. Our work suggests that miR-133 and PITX3 gene variants did not contribute to the risk for PD.
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Affiliation(s)
- Lorena de Mena
- Genética Molecular, Hospital Universitario Central de Asturias, Oviedo, Spain
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12
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Gutiérrez JC, Seijo FJ, Vega MAÁ, González FF, Aragoneses BL, Blázquez M. Therapeutic extradural cortical stimulation for Parkinson's Disease: Report of six cases and review of the literature. Clin Neurol Neurosurg 2009; 111:703-7. [DOI: 10.1016/j.clineuro.2009.06.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2008] [Revised: 06/12/2009] [Accepted: 06/19/2009] [Indexed: 10/20/2022]
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13
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Sánchez-Ferrero E, Coto E, Blázquez M, Ribacoba R, Guisasola LM, Salvador C, Alvarez V. Mutational screening of the mitochondrial transcription factors B1 and B2 (TFB1M and TFB2M) in Parkinson's disease. Parkinsonism Relat Disord 2008; 15:468-70. [PMID: 18980857 DOI: 10.1016/j.parkreldis.2008.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2008] [Revised: 09/09/2008] [Accepted: 09/15/2008] [Indexed: 11/25/2022]
Abstract
Mitochondrial dysfunction has been implicated in Parkinson's disease (PD). The nuclear encoded transcription factors A, B1 and B2 are essential for mitochondrial DNA replication. Sequence variants at the genes encoding TFAM, TFB1M and TFB2M could contribute to the risk of developing PD. Here, we searched for TFB1M and TFB2M nucleotide variants in a cohort of PD-patients (n=300) and healthy controls (n=200) from Spain. Single strand conformation analysis and direct sequencing were used to determine the variation at all the coding exons of the two genes. In addition to previously reported polymorphisms, we found several rare variants in patients and controls. Allele frequencies for all the nucleotide changes did not differ between patients and controls. Our work suggests that DNA variants in TFB1M and TFB2M did not contribute to the risk for PD in our population.
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14
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Alvarez V, Corao AI, Sánchez-Ferrero E, De Mena L, Alonso-Montes C, Huerta C, Blázquez M, Ribacoba R, Guisasola LM, Salvador C, García-Castro M, Coto E. Mitochondrial transcription factor A (TFAM) gene variation in Parkinson's disease. Neurosci Lett 2008; 432:79-82. [PMID: 18248889 DOI: 10.1016/j.neulet.2007.12.010] [Citation(s) in RCA: 28] [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] [Received: 10/14/2007] [Revised: 12/04/2007] [Accepted: 12/05/2007] [Indexed: 12/21/2022]
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15
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Huerta C, Sánchez-Ferrero E, Coto E, Blázquez M, Ribacoba R, Guisasola LM, Salvador C, Alvarez V. No association between Parkinson's disease and three polymorphisms in the eNOS, nNOS, and iNOS genes. Neurosci Lett 2007; 413:202-5. [PMID: 17174475 DOI: 10.1016/j.neulet.2006.11.044] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2006] [Revised: 11/02/2006] [Accepted: 11/27/2006] [Indexed: 11/26/2022]
Abstract
Nitric oxide synthases (NOS) and mitochondrial DNA-polymorphisms have been associated with the risk of developing Parkinson's disease (PD). In this report, we genotyped 450 PD-patients and 200 controls for three polymorphisms in the endothelial, inducible and neuronal NOS-genes, and for the T4336C and A10398G mitochondrial DNA-polymorphisms. None of the eNOS (intron 4 VNTR), iNOS (exon 22 A/G), or nNOS (exon 29T/C) were significantly associated with PD. Mitochondrial 4336C increased the PD-risk among women (OR=6.13), while the 10398G had a protective effect (OR=0.52). We did not find significantly interactions between the NOS and mitochondrial polymorphisms in the risk for PD in our population.
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Affiliation(s)
- Cecilia Huerta
- Genética Molecular-Instituto de Investigación Nefrológica, Hospital Central de Asturias, Servicio de Salud del Principado de Asturias, Spain
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16
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Huerta C, Castro MG, Coto E, Blázquez M, Ribacoba R, Guisasola LM, Salvador C, Martínez C, Lahoz CH, Alvarez V. Mitochondrial DNA polymorphisms and risk of Parkinson's disease in Spanish population. J Neurol Sci 2005; 236:49-54. [PMID: 15975594 DOI: 10.1016/j.jns.2005.04.016] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2005] [Revised: 04/26/2005] [Accepted: 04/29/2005] [Indexed: 12/21/2022]
Abstract
Mutations in mitochondrial DNA (mtDNA) have been implicated in the development of Parkinson's disease (PD). Mitochondrial function is necessary to supply the energy required for cell metabolism, and mutations in mitochondrial genes should have a deleterious effect in neuronal function. An association between several common mtDNA-polymorphisms and the risk of PD has been described. To test this association among Spanish patients, we genotyped 271 PD-patients and 230 healthy controls for 13 single-nucleotide polymorphisms (SNPs) through polymerase chain reaction (PCR) followed by digestion with a restriction enzyme. Alleles at eight of these SNPs define nine common European haplotypes, the mitochondrial haplogroups. In our population, no haplogroup showed significantly different frequencies between patients and controls. A significant association was found for the 4336T/C SNP (a polymorphism in the tRNA gln gene), with allele 4336C having a significantly increased frequency in PD-women compared to controls (OR=4.45; 95%CI=1.23-15.96; p=0.011). We also sequenced five of the complex I genes (ND1 to ND5) in the patients who were 4336C, and no mutation in these genes was found. We also found a significantly reduced frequency of 10398G in patients (p=0.009; OR=0.53), confirming a previously described protective effect for this allele in PD. In conclusion, we provided further evidence of the involvement of mitochondrial DNA variation in PD. In agreement with previous reports, we described a higher risk for PD among women with the mitochondrial 4336C allele in our population, and a protective effect for 10398G.
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Affiliation(s)
- Cecilia Huerta
- Genética Molecular-Instituto de Estudios Nefrológicos, Hospital Central de Asturias, Maternidad, 33006 Oviedo, Spain
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17
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Madueño R, Pineda T, Sevilla J, Blázquez M. The kinetics of the dissolution of 6-mercaptopurine self-assembled monolayers on Au(111) and Hg electrodes. J Electroanal Chem (Lausanne) 2005. [DOI: 10.1016/j.jelechem.2004.10.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Huerta C, Alvarez V, Mata IF, Coto E, Ribacoba R, Martínez C, Blázquez M, Guisasola LM, Salvador C, Lahoz CH, Peña J. Chemokines (RANTES and MCP-1) and chemokine-receptors (CCR2 and CCR5) gene polymorphisms in Alzheimer's and Parkinson's disease. Neurosci Lett 2004; 370:151-4. [PMID: 15488313 DOI: 10.1016/j.neulet.2004.08.016] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2004] [Revised: 08/04/2004] [Accepted: 08/07/2004] [Indexed: 11/29/2022]
Abstract
Parkinson's disease (PD) is a complex disorder characterized by the progressive degeneration of dopaminergic neurons in the midbrain. Late-onset Alzheimer's disease (LOAD) is the most common cause of dementia in the elderly, affecting about 5% of the population older than 65 years. Several works have demonstrated the involvement of inflammation in the pathogenesis of both, PD and LOAD. Genetic susceptibility to develop PD and LOAD has also been widely recognised. Thus, functional polymorphisms at the genes encoding inflammatory proteins could influence the overall risk of developing these neurodegenerative disorders. We examined whether DNA-polymorphisms at the genes encoding chemokines MCP-1 (-2518 A/G) and RANTES (-403 A/G), and chemokine receptors 5 (CCR5, Delta32) and 2 (CCR2,V64I), were associated with the risk and/or the clinical outcome of LOAD and PD. A total of 200 PD, 326 LOAD, and 370 healthy controls were genotyped for the four polymorphisms, and genotype frequencies statistically compared. We did not find significant differences in the frequencies of the different genotypes between both groups of patients and controls. We conclude that the four DNA polymorphisms, which have been associated with several immuno-modulated diseases, did not contribute to the risk of PD or LOAD.
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Affiliation(s)
- Cecilia Huerta
- Genética Molecular-IRSIN/FRIAT, Hospital Central Asturias, Oviedo 33006, Spain
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19
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Blázquez M, Blázquez B, García A. [Simultaneous finding of right trigeminal nerve schwannomas and left frontal arteriovenous malformation]. Neurologia 2003; 18:158-9. [PMID: 12677482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023] Open
Affiliation(s)
- M Blázquez
- Servicio de Neurología, Hospital Central de Asturias, Oviedo, Spain.
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20
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Blázquez M, López-Alburquerque T, Ciudad Bautista J, Fermoso García J. [The Guillain-Barré syndrome due to cytomegalovirus in two siblings. Peak-flow meter as the mechanism of transmission]. Med Clin (Barc) 2002; 119:317-8. [PMID: 12236978 DOI: 10.1016/s0025-7753(02)73401-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Mata IF, Alvarez V, García-Moreira V, Guisasola LM, Ribacoba R, Salvador C, Blázquez M, Sarmiento RG, Lahoz CH, Menes BB, García EC. Single-nucleotide polymorphisms in the promoter region of the PARKIN gene and Parkinson's disease. Neurosci Lett 2002; 329:149-52. [PMID: 12165399 DOI: 10.1016/s0304-3940(02)00619-5] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Mutations in the PARKIN gene have been identified in families with recessively inherited Parkinson disease (PD). Common DNA-polymorphisms at the PARKIN gene could contribute to the risk for PD in the general population. Here we searched for DNA-polymorphisms in the PARKIN promoter. We found two single nucleotide polymorphisms (-324 A/G and -797 A/G). In order to analyse the association of PD with these and two previously described polymorphisms (1281 G/A, Asp394Asn, and 601 G/A, Ser167Asn) we genotyped 105 patients and 150 healthy controls. Allele and genotype frequencies for the four polymorphisms did not differ between patients and controls, or between patients with an early-onset (< or =40 years; n = 20) and a late-onset (>40 years; n = 85). According to our data, the genetic variation at the PARKIN gene (including promoter polymorphisms) did not contribute to the risk of developing PD in the general population.
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Affiliation(s)
- Ignacio F Mata
- Genética Molecular-Instituto Investigación Nefrológica (IRSIN), Hospital Central de Asturias, 33006 Oviedo, Spain
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22
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Blázquez M, Koornneef M, Putterill J. Flowering on time: genes that regulate the floral transition. Workshop on the molecular basis of flowering time control. EMBO Rep 2001; 2:1078-82. [PMID: 11743019 PMCID: PMC1084172 DOI: 10.1093/embo-reports/kve254] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- M Blázquez
- Instituto de Biología Molecular y Celular de Plantas (CSIC-UPV), Universidad Politecnica de Valencia, 46022 Valencia, Spain
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23
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Roman A, Sevilla J, Pineda T, Blázquez M. A study on maxima and inverted peaks in cyclic voltammetry. Electrochemical reduction of pyridine-4-aldoxime at an HMDE. J Electroanal Chem (Lausanne) 2001. [DOI: 10.1016/s0022-0728(01)00653-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Abstract
Prohormone convertase 3 (PC3) is a neuroendocrine-specific member of the subtilisin-kexin family, involved in the intracellular processing and maturation of prohormones and proneuropeptides. PC3 is synthesised as a proprotein that undergoes two different cleavages resulting in the mature PC3 and the enzymatically active PC3DeltaC. In vitro translated proPC3 and proPC3DeltaC bind to trans-Golgi network (TGN)/granule-enriched membranes from the AtT20 neuroendocrine cell line in a pH-dependent manner suggesting both a dominant role for the pro-region in membrane association and that the C-terminal region is not essential. However, while PC3 bound to membranes the majority of PC3DeltaC did not, suggesting that either the pro-region or the C-terminal region of PC3 is required for membrane association. Removal of peripheral membrane proteins did not affect the binding properties of any of the in vitro translated proteins. Chromaffin granule membranes (CGMs) were used to study the binding characteristics of endogenous PC3 and its active C-terminal truncated counterpart (PC3DeltaC). Incubation of CGMs with Triton X-100 did not completely solubilise either of these forms of PC3. Moreover, both PC3 and PC3DeltaC remained associated with detergent-resistant membrane microdomains, termed lipid rafts, purified from CGMs. The data raise the possibility that PC3 and PC3DeltaC are sorted to the regulated secretory pathway via their association with membrane lipid rafts.
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Affiliation(s)
- M Blázquez
- Department of Molecular and Cell Biology, Institute of Medical Sciences, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK
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25
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Madueño R, Sevilla J, Pineda T, Román A, Blázquez M. A voltammetric study of 6-mercaptopurine monolayers on polycrystalline gold electrodes. J Electroanal Chem (Lausanne) 2001. [DOI: 10.1016/s0022-0728(01)00482-x] [Citation(s) in RCA: 38] [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] [Indexed: 10/17/2022]
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26
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Blázquez M, Shennan KI. Basic mechanisms of secretion: sorting into the regulated secretory pathway. Biochem Cell Biol 2001; 78:181-91. [PMID: 10949073] [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] Open
Abstract
Targeting proteins to their correct cellular location is crucial for their biological function. In neuroendocrine cells, proteins can be secreted by either the constitutive or the regulated secretory pathways but the mechanism(s) whereby proteins are sorted into either pathway is unclear. In this review we discuss the possibility that sorting is either an active process occurring at the level of the trans-Golgi network, or that sorting occurs passively in the immature granules, The possible involvement of protein-lipid interactions in the sorting process is also raised.
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Affiliation(s)
- M Blázquez
- Department of Molecular and Cell Biology, University of Aberdeen, Institute of Medical Sciences, Foresterhill
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27
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Bosma PT, Blázquez M, Fraser EJ, Schulz RW, Docherty K, Trudeau VL. Sex steroid regulation of glutamate decarboxylase mRNA expression in goldfish brain is sexually dimorphic. J Neurochem 2001; 76:945-56. [PMID: 11181814 DOI: 10.1046/j.1471-4159.2001.00086.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [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: 01/23/2023]
Abstract
Testosterone and oestradiol can modulate GABA synthesis in sexually regressed goldfish. Here we investigated their effects on the mRNA expression of two isoforms of the GABA synthesizing enzyme glutamate decarboxylase (GAD(65) and GAD(67), EC 4.1.1.15). Full-length GAD clones were isolated from a goldfish cDNA library and sequenced. Goldfish GAD(65) encodes a polypeptide of 583 amino acid residues, which is 77% identical to human GAD(65). Goldfish GAD(67) encodes a polypeptide of 587 amino acid residues and is 82% identical to human GAD(67). Goldfish GAD(65) and GAD(67) are 63% identical. Sexually regressed male and female goldfish were implanted with solid silastic pellets containing testosterone, oestradiol or no steroid. Semiquantitative PCR analysis showed that oestradiol significantly increased GAD(65) mRNA expression in female hypothalamus and telencephalon, while testosterone resulted in a significant increase only in telencephalon. GAD(67) mRNA levels were not affected by steroids in females. In contrast, both steroids induced significant decreases of GAD(65) and GAD(67) mRNA levels in male hypothalamus, but had no effect on GAD mRNA expression in male telencephalon. Our results indicate that modulation of GAD mRNA expression is a possible mechanism for steroid action on GABA synthesis, which may have opposite effects in males and females.
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Affiliation(s)
- P T Bosma
- Department of Molecular and Cell Biology, Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
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28
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Affiliation(s)
- S Abel
- University of California Davis, California, USA
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29
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Pineda T, Sevilla J, Román A, Blázquez M. Electrooxidation of pyridoxal (PL) on a polycrystalline gold electrode in alkaline solutions. J Electroanal Chem (Lausanne) 2000. [DOI: 10.1016/s0022-0728(00)00258-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Blázquez M, Thiele C, Huttner WB, Docherty K, Shennan KI. Involvement of the membrane lipid bilayer in sorting prohormone convertase 2 into the regulated secretory pathway. Biochem J 2000; 349 Pt 3:843-52. [PMID: 10903147 PMCID: PMC1221213 DOI: 10.1042/bj3490843] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [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: 02/07/2023]
Abstract
Prohormone convertase 2 (PC2) is a neuroendocrine-specific protease involved in the intracellular maturation of prohormones and proneuropeptides. PC2 is synthesised as a proprotein (proPC2) that undergoes proteolysis, aggregation and membrane association during its transit through the regulated secretory pathway. We have previously shown that the pro region of proPC2 plays a key role in its aggregation and membrane association. To investigate this further, we determined the binding properties of a peptide containing amino acids 45-84 of proPC2 (proPC2(45-84)) to trans-Golgi network/granule-enriched membranes from the AtT20 cell line. Removal of peripheral membrane proteins or hydrolysis of integral membrane proteins did not affect the binding properties of proPC2(45-84). Rather, proPC2(45-84) was shown to bind to protein-free liposomes in a pH- and Ca(2+)-dependent manner. To identify the component of the lipid bilayer involved in this membrane association, we used chromaffin-granule membranes and studied the binding properties of the endogenous PC2. Treatment of the membranes with saponin, a cholesterol-depleting detergent, failed to extract PC2 from the membranes, whereas chromogranin A (CgA) was removed. Treatment of the membranes with Triton X-100 yielded a low-density detergent-insoluble fraction enriched in PC2, but not CgA. The detergent-insoluble fraction also contained glycoprotein III, known to be part of the lipid rafts (membrane microdomains rich in sphingolipids). Finally, sphingolipid depletion of AtT20 cells resulted in the mis-sorting of PC2, suggestive of a link between the association of PC2 with lipid rafts in the membrane and its sorting into the regulated secretory pathway.
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Affiliation(s)
- M Blázquez
- Department of Molecular and Cell Biology, Institute of Medical Sciences. University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, Scotland, U.K
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31
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Affiliation(s)
- M Blázquez
- Instituto de Biologia Molecular y Celular de Plantas (CSIC), Universidad Politecnica de Valencia, Camino de Vera s/n, Spain
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Bosma PT, Blázquez M, Collins MA, Bishop JD, Drouin G, Priede IG, Docherty K, Trudeau VL. Multiplicity of glutamic acid decarboxylases (GAD) in vertebrates: molecular phylogeny and evidence for a new GAD paralog. Mol Biol Evol 1999; 16:397-404. [PMID: 10331265 DOI: 10.1093/oxfordjournals.molbev.a026120] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The evolution of chordate glutamic acid decarboxylase (GAD; EC 4.1.1.15), a key enzyme in the central nervous system synthesizing the neurotransmitter gamma-amino-butyric acid (GABA) from glutamate, was studied. Prior to this study, molecular data of GAD had been restricted to mammals, which express two distinct forms, GAD65 and GAD67. These are the products of separate genes and probably are derived from a common ancestral GAD following gene duplication at some point during vertebrate evolution. To enable a comprehensive phylogenetic analysis, molecular information of GAD forms in other vertebrate classes was essential. By reverse transcriptase-polymerase chain reaction (RT-PCR), partial nucleotide sequences of GAD were cloned from brains of zebra finch (Taeniopygia guttata), turtle (Trachemys scripta), goldfish (Carassius auratus), zebrafish (Danio rerio), and armoured grenadier (Coryphaenoides (Nematonurus) armatus, a deep-sea fish), and from the cerebral ganglion plus neural gland of Ciona intestinalis, a protochordate. Whereas GAD65 and GAD67 homologs were expressed in birds, reptiles, and fish, only a single GAD cDNA with equal similarities to both vertebrate GAD forms was found in the protochordate. This indicates that the duplication of the vertebrate GAD gene occurred between 400 and 560 million years ago. For both GAD65 and GAD67, the generated phylogenetic tree followed the general tree topology for the major vertebrate classes. In turtle, an alternative spliced form of GAD65, putatively encoding a truncated, nonactive GAD, was found. Furthermore, a third GAD form, which is equally divergent from both GAD65 and GAD67, is expressed in C. (N.) armatus. This third form might have originated from an ancient genome duplication specific to modern ray-finned fishes.
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Affiliation(s)
- P T Bosma
- Department of Zoology, University of Aberdeen, U.K
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Adeva MT, Blázquez M, Ciudad J. [Cervical myelopathy due to a tumor of the foramen magnum]. Rev Neurol 1999; 28:435. [PMID: 10714331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Affiliation(s)
- M T Adeva
- Servicio de Neurología, Hospital Universitario de Salamanca, España
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del Mar Marcos M, Adeva T, Blázquez M. [Man-in-the-barrel syndrome]. Rev Neurol 1999; 28:212. [PMID: 10101787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Blázquez M, Bosma PT, Chang JP, Docherty K, Trudeau VL. Gamma-aminobutyric acid up-regulates the expression of a novel secretogranin-II messenger ribonucleic acid in the goldfish pituitary. Endocrinology 1998; 139:4870-80. [PMID: 9832423 DOI: 10.1210/endo.139.12.6339] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
An RNA-arbitrarily primed PCR differential display strategy was used to identify candidate genes in the pituitary that are up-regulated by endogenously activated gamma-aminobutyric acid (GABA) systems that may also be involved in the control of reproduction. Goldfish were injected with the GABA metabolism inhibitor gamma-vinyl-GABA (GVG), known for its high efficiency to specifically increase endogenous brain and pituitary GABA levels in this species, resulting in higher levels of circulating gonadotropin-II (GTH-II). Several transcripts related to hormone secretion, signal transduction pathways, and messenger RNA (mRNA) editing were shown to be up-regulated after GVG injection. Among these transcripts we characterized an mRNA coding for the secretory vesicle protein secretogranin-II (SgII), a member of the chromogranin family, which is the precursor of a novel 34 amino acid neuropeptide, goldfish secretoneurin (SN). A semiquantitative PCR developed to measure pituitary SgII mRNA levels showed a 5-fold increase in GVG treated fish vs. control fish. Moreover, GVG treatment specifically increased SgII mRNA levels in gonadotrophs, concomitant with a decrease in GTH-II cell content. In addition, i.p. injection of synthetic goldfish SN increased GTH-II release in goldfish pretreated with the dopamine antagonist domperidone. Activation of GABAergic neurons has two effects, enhancing in vivo GTH-II release and up-regulating SgII mRNA specifically in goldfish gonadotrophs. Together with our SN bioactivity data, this suggests the existence in the pituitary of an autocrine or paracrine mechanism linked to the regulated secretory pathway in the gonadotrophs.
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Affiliation(s)
- M Blázquez
- Department of Zoology, University of Aberdeen, United Kingdom
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Sevilla J, Pineda T, Román A, Madueño R, Blázquez M. The direct electrochemistry of cytochrome c at a hanging mercury drop electrode modified with 6-mercaptopurine. J Electroanal Chem (Lausanne) 1998. [DOI: 10.1016/s0022-0728(98)00075-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Blázquez M, Bosma PT, Fraser EJ, Van Look KJ, Trudeau VL. Fish as models for the neuroendocrine regulation of reproduction and growth. Comp Biochem Physiol C Pharmacol Toxicol Endocrinol 1998; 119:345-64. [PMID: 9827007 DOI: 10.1016/s0742-8413(98)00023-1] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Models are essential for the full understanding of neuroendocrine control processes. In this regard fish offer a rich source of biological material. They have diverse growth and reproductive strategies, inhabiting most of the Earth's aquatic ecological niches. Fish possess many of the common vertebrate features but also offer several unique aspects to allow the biologist easy access to the study of hypothalamic and pituitary function. Several key examples of how teleosts, or the bony fish, can offer insight into fundamental mechanisms of vertebrate sex differentiation, growth and reproduction are reviewed.
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Affiliation(s)
- M Blázquez
- Department of Zoology, University of Aberdeen, UK
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Abstract
To explore a new approach for characterizing the molten globule conformation, cyclic voltammetric studies of salt induced transitions at acidic pH of cyt c have been carried out. The use of modified electrodes has made the observation of direct electrochemistry in native cyt c possible. However, most of these electrodes do not show reversible responses at acidic pH, due to the fact that, for this system, a deprotonated electrode surface is needed. In these studies, we have used a 6-mercaptopurine and cysteine-modified gold electrodes which are effective for direct rapid electron transfer to cyt c, even in acid solutions. The change in the absorption bands of cyt c are used to monitor the conformational states and, hence, to compare the voltammetric results. Under the experimental conditions where the A state of cyt c is obtained, a reversible voltammetric signal is observed. The midpoint peak potentials are found to be very close to the formal potential of native cyt c. Results are discussed in terms of a cooperative two-state transition between the acid unfolded and the globular acidic states of cyt c. This finding establishes, for the first time, the similarity of both the native and the molten globule-like conformations in terms of its redox properties.
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Affiliation(s)
- T Pineda
- Departamento de Química Física y Termodinámica Aplicada, Facultad de Ciencias, Universidad de Córdoba, Spain
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Blázquez M, Fominaya JM, Hofsteenge J. Oxidation of sulfhydryl groups of ribonuclease inhibitor in epithelial cells is sufficient for its intracellular degradation. J Biol Chem 1996; 271:18638-42. [PMID: 8702516 DOI: 10.1074/jbc.271.31.18638] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.2] [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: 02/01/2023] Open
Abstract
Ribonuclease inhibitor (RI) is a cytoplasmic protein (50 kDa) that inhibits a variety of pancreatic type RNases. The porcine inhibitor contains 30 cysteine residues, all of which occur in the reduced state. It is well known that in vitro modification of the thiol groups inactivates the protein and greatly increases its susceptibility to proteolysis. Here we show that oxidation of thiol groups in RI can also occur within the cell. Induction of an oxidative insult in cultured LLC-PK1 cells, either with a general oxidant, H2O2, or with a thiol-specific oxidant, diamide, led to the loss of RI activity. By using specific antibodies it was demonstrated that the decrease correlated with a decline in the amount of RI protein in the cells. Furthermore, analysis of RI mRNA levels and half-life of the protein excluded inhibition of the synthesis of RI as the cause of its depletion. The results indicate that oxidation of thiol groups in RI is sufficient to cause its rapid inactivation and disappearance from the cell. Most likely this results from intracellular degradation of the protein.
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Affiliation(s)
- M Blázquez
- Friedrich Miescher-Institut, CH-4002 Basel, Switzerland
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Casal M, Blázquez M, Gamo J, Gancedo C, Leão C. Transport of lactate and its regulation in Saccharomyces cerevisiae mutants deficient in specific metabolic steps. Folia Microbiol (Praha) 1994; 39:512. [PMID: 8550003 DOI: 10.1007/bf02814076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- M Casal
- Departamento de Biologia, Universidade do Minho, Portugal
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Squella J, Mosre J, Blázquez M, Nú≈nez-Vergara LJ. Cyclic voltammetric study of the nitro radical anion from nitrendipine generated electrochemically. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/0022-0728(91)87076-g] [Citation(s) in RCA: 26] [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: 11/25/2022]
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Rodríguez Mellado J, Blázquez M, Domínguez M. Derivation and experimental verification of approximate explicit equations in differential pulse polarography. ACTA ACUST UNITED AC 1988. [DOI: 10.1016/0022-0728(88)85132-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Rodríguez-Mellado J, Blázquez M, Ruiz J. Some aspects on the role of proton donors in the electrochemical reduction of dicarbonyl compounds. Electrochim Acta 1986. [DOI: 10.1016/0013-4686(86)87061-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Rodríguez-Mellado J, Blázquez M, Camacho L, Ruiz J. Systematic errors in the calculation of kinetic parameters by the polarographic method. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0022-0728(85)80074-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [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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Manzano JL, Church A, Manzano JJ, Bolaños J, Blázquez M, Villalobos J. [Computers in intensive care units]. Rev Esp Anestesiol Reanim 1980; 27:301-10. [PMID: 7209066] [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: 01/24/2023]
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Blázquez E, Simon FA, Blázquez M, Foà PP. Changes in serum growth hormone levels from fetal to adult age in the rat. Proc Soc Exp Biol Med 1974; 147:780-3. [PMID: 4445167 DOI: 10.3181/00379727-147-38437] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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