Juan José Ramos

ORCID: 0000-0001-9079-6740
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Research Areas
  • Toxic Organic Pollutants Impact
  • Effects and risks of endocrine disrupting chemicals
  • Analytical Chemistry and Chromatography
  • Analytical chemistry methods development
  • Pesticide Residue Analysis and Safety
  • Carcinogens and Genotoxicity Assessment
  • Meat and Animal Product Quality
  • Mycotoxins in Agriculture and Food
  • Per- and polyfluoroalkyl substances research
  • Air Quality and Health Impacts
  • Animal Nutrition and Physiology
  • Healthcare Systems and Public Health
  • Antimicrobial agents and applications
  • Alcohol Consumption and Health Effects
  • Health, Environment, Cognitive Aging
  • Pharmacological Effects and Assays
  • Environmental Sustainability and Education
  • Research on Leishmaniasis Studies
  • Gout, Hyperuricemia, Uric Acid
  • Identification and Quantification in Food
  • Legume Nitrogen Fixing Symbiosis
  • Health, Education, and Physical Culture
  • Heavy Metal Exposure and Toxicity
  • Historical and socio-economic studies of Spain and related regions
  • Pesticide Exposure and Toxicity

Universidad Autónoma de Bucaramanga
2024

Instituto de Salud Carlos III
2014-2023

St Martins Hospital
2020

Centro Nacional de Sanidad Ambiental
2015-2019

Hospital Universitario Miguel Servet
1994-2019

Gobierno de Canarias
2014

Instituto de Química Orgánica General
2004-2012

Consejo Superior de Investigaciones Científicas
2006-2008

Universidad de León
2008

Median concentration of total PBDEs in maternal serum, paternal umbilical cord and breast milk samples were 12, 17, 6.1 ng/g lipid weight (lw) Vallecas 9.7, 15, 5.5 lw Getafe. The median value found placentas was 1.9 (in Vallecas). BDE 47 the predominant congener serum (maternal, paternal, cord), while 209 placenta samples. BDEs 196 197 detected most results show that PBDEs, like other POPs, can cross barrier, although speed process seems to differ for each PBDE congeners. concentrations...

10.1021/es0714484 article EN Environmental Science & Technology 2007-09-12

10.1007/s00216-004-2906-5 article EN Analytical and Bioanalytical Chemistry 2004-12-15

Hyperuricemia is becoming a serious public health issue, which highly influenced by environmental factors, although there still controversial information on the potential influence of exposure to Persistent Toxic Substances (PTSs) in general population. In this study we aimed assess association. PTS with uric acid homeostasis sample Spanish Participants were recruited during 2009-2010 all main geographical areas Spain. Exposure 34 PTSs was estimated chemical analyses serum levels 6...

10.1016/j.envint.2018.12.030 article EN cc-by-nc-nd Environment International 2019-01-05

Previous studies on drug efficacy showed low protection against abortion and vertical transmission of Toxoplasma gondii in pregnant sheep. Bumped kinase inhibitors (BKIs), which are ATP-competitive calcium-dependent protein 1 (CDPK1), were shown to be highly efficacious several apicomplexan parasites vitro laboratory animal models. Here, we present the safety BKI-1294 treatment (dosed orally at 100 mg/kg body weight 5 times every 48 h) initiated h after oral infection sheep midpregnancy with...

10.1128/aac.02527-18 article EN Antimicrobial Agents and Chemotherapy 2019-05-02

Abstract Two groups of 32 hens and broiler chickens were contaminated with 2.5 5 mg aflatoxin (AF) kg −1 feed for a period days. During this contamination 16 birds sacrificed its metabolites detected using thin‐layer chrotnatography fluorescence densisometry. The tissues analysed (liver, muscle, kidney, gizzard eggs) gave wide range concentrations, the lowest was found in ben muscle (0.05 μg AFB 1 ) highest gizzards from group (9.01 ). Metabolites , AFM, 2a appeared liver but not other...

10.1002/jsfa.2740650407 article EN Journal of the Science of Food and Agriculture 1994-08-01

A miniaturised analytical method allowing the exhaustive extraction of environmentally relevant polychlorinated biphenyls (PCBs) from fatty foodstuffs and purification extracts in a single step has been developed. After dispersion freeze dried sample on silica modified with 44% (w/w) sulphuric acid, mixture was packed glass column top multilayer used for removal lipids biogenic co-extracted material. Using this arrangement, complete preparation can be accomplished by two successive 10 min...

10.1002/jssc.200301648 article EN Journal of Separation Science 2004-03-30

Convicilins, a set of seed storage proteins, differ from vicilins, related group mainly because the presence N-terminal extension, an additional sequence amino acids in corresponding to first exon. Convicilins have been described only species legume tribe Vicieae. One or two genes for convicilins identified most this tribe. The genus Pisum is main exception, since its species. Thirty-four new convicilin gene sequences 29 different (Lathyrus, Lens, Pisum, and Vicia spp.) analyzed here....

10.1139/g08-036 article EN Genome 2008-06-10

Introduction: Insufficient attention has been paid in South America to the coexistence of metabolic syndrome and cardiovascular risk individuals suffering from vascular dementia. The aim this study is examine stratification using Framingham, PROCAM, SCORE equations patients diagnosed with dementia, assess prevalence syndrome. Methodology: A cross-sectional research conducted between January 2020 December 2022 on 100 persons dementia diagnoses. ATP-III criteria were used existence score was...

10.33774/coe-2024-kzv24 preprint EN cc-by-nc-nd 2024-04-15

Objetivos. Determinar los factores asociados a mortalidad de pacientes adultos hospitalizados con COVID-19 en un hospital referencia la seguridad social. Materiales y métodos. Se realizó estudio cohorte prospectivo. incluyó mayores 18 años el diagnostico infección por SARS-CoV-2 se excluyó quienes ingresaron asintomáticos respiratorios, prueba rápida serológica positiva al ingreso sin imágenes compatibles. Los datos recolectaron partir historia clínica. Resultados. total 813 adultos, 544...

10.1590/scielopreprints.1241 preprint ES SciELO (SciELO Preprints) 2020-09-24

Twenty-three male lambs were fed 2.5 ppm of aflatoxin for 21 days. Thirteen constituted the control group. Twelve given toxin and six from group killed at The remaining animals 8 days later. To determine haematological biochemical parameters, samples blood obtained 0, 7, 14 exposure 1, 2, 4 after exposure. most sensitive indicator intoxication was reduction in body weight (17 +/- 2.2 kg-1 wt. intoxicated 19.2 1.8 group: P >> 0.01) average daily gain (133 79 g day-1 254 105 group; 0.001) 14th...

10.1002/(sici)1099-1263(199601)16:1<85::aid-jat315>3.0.co;2-t article EN Journal of Applied Toxicology 1996-01-01

A simple and fast method for the determination of phenothiazines in bovine liver has been developed. The analytes were isolated from other components by a matrix solid phase dispersion (MSPD) procedure involving mixture C18 sea sand as dispersants, preliminary acidic digestion using acetonitrile extraction solvent. Because complexity studied matrix, an extra cleanup collected extracts on neutral alumina was required before instrumental target compounds high performance liquid chromatography...

10.1080/10826070903442394 article EN Journal of Liquid Chromatography &amp Related Technologies 2009-12-29
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