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Cuesta-Mateos C, Colom-Fernández B, Portero-Sainz I, Tejedor R, García-García C, Concha-Garzón MJ, De las Heras-Alonso ME, Martínez MA, Juarez C, Muñoz-Calleja C. Autoantibodies against TIF-1-γ and CADM-140 in Spanish patients with clinically amyopathic dermatomyositis (CADM): clinical significance and diagnostic utility. J Eur Acad Dermatol Venereol 2014; 29:482-9. [PMID: 25065441 DOI: 10.1111/jdv.12591] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 05/13/2014] [Indexed: 01/27/2023]
Abstract
BACKGROUND Patients with clinically amyopathic dermatomyositis (CADM) appear to be at risk for developing cancer and interstitial lung diseases, but population data to confirm this hypothesis are limited. Moreover, CADM presents cutaneous and histological findings that may overlap with subacute cutaneous lupus erythematosus (SCLE). OBJECTIVES To determine the association between myositis-specific autoantibodies, myositis-associated autoantibodies and CADM in Spanish patients. In addition, to study the usefulness of these autoantibodies in the differential diagnosis between CADM and SCLE. METHODS Serum samples were tested for myositis-specific autoantibodies and myositis-associated autoantibodies through immunoprecipitation and other standardized methods. RESULTS Anti-CADM-p140 and anti-p155 antibodies were the only myositis-specific autoantibodies found and were associated with interstitial lung diseases and cancer respectively. No myositis-associated autoantibodies were found in CADM. Moreover, clinical subsets and proportions seemed to differ from Asian cohorts, where anti-CADM-p140 is considered a CADM hallmark antibody and a risk factor for the development of interstitial lung disease. Interestingly, anti-SSA was highly associated with SCLE, whereas no myositis-specific autoantibodies were found in this entity. LIMITATIONS OF THE STUDY Association between CADM and myositis-specific autoantibodies and differences between CADM and SCLE were tested on a relatively small cohort of patients. CONCLUSION There is an association between cancer-associated myositis and interstitial lung diseases and their hallmark autoantibodies in our cohort. In addition, the combined determination of myositis-specific autoantibodies and SSA autoantibodies may help to accurately discriminate SCLE from CADM.
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Ríos A, López-Navas A, Ayala-García MA, Sebastián MJ, Abdo-Cuza A, Martínez-Alarcón L, Ramírez EJ, Muñoz G, Suárez-López J, Castellanos R, Ramírez R, González B, Martínez MA, Díaz E, Ramírez P, Parrilla P. Ancillary personnel in Spanish and Latin-American hospitals faced with living related kidney donation. Actas Urol Esp 2014; 38:347-54. [PMID: 24594399 DOI: 10.1016/j.acuro.2013.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Accepted: 12/01/2013] [Indexed: 11/20/2022]
Abstract
INTRODUCTION Ancillary hospital personnel represent an important body of opinion because as they work in a hospital their opinion has more credibility for the general public as a result of their activity in hospitals. However, in most cases they do not have any health care training which means that their attitude could be based on a lack of knowledge or unfounded fears. OBJECTIVE To analyze the attitude toward living kidney donation (LKD) among ancillary personnel in Spanish and Latin-American hospitals and to analyze the variables that might influence such attitude. PATIENTS AND METHOD from «International Collaborative Donor Project» a random sample was taken among ancillary personnel in Spain, Mexico and Cuba hospitals. Attitude towards LKD was evaluated using a validated, anonymously filled and self-administered survey. RESULTS 951 professionals were surveyed (Spain: 277, Mexico: 632, Cuba: 42). 89% (n=850) are in favor of related kidney donation, lowering to 31% (n=289) in non-related donation. Of the rest, 8% (n=78) are not in favor and the 3% (n=23) are unsure. By country, Cubans (98%) and Mexicans (91%) are more in favour than Spanish (84%) (P=.001). The following variables are related to favourable attitude towards LKD: female sex (P=.017), university degree (P=.010), work in health services (P=.035), labour stability (P=.016), personal experience in donation and transplantation (P=.001), positive attitude toward cadaveric donation (P<.001), belief that he or she might need a transplant in the future (P<.001), positive attitude towards living liver donation (P<.001), a willingness to receive a donated living liver if needed (P<.001), having discussed the subject of organ donation and transplantation within the family (P<.001), partner's positive attitude towards the subject (P<.001), participation in voluntary type pro-social activities (P=.002) and not being concerned about possible mutilation after donation (P<.001) CONCLUSIONS: The attitude toward living related kidney donation is favourable among ancillary personnel in Spanish and Latin-Americans hospitals. Because living donation is a better source of organs than cadaveric ones, this favourable predisposition can be used as promoting agent of living donation in order to develop it in Spanish-speaking countries.
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Sáez P, Peña E, Martínez MA. A structural approach including the behavior of collagen cross-links to model patient-specific human carotid arteries. Ann Biomed Eng 2014; 42:1158-69. [PMID: 24639211 DOI: 10.1007/s10439-014-0995-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 03/05/2014] [Indexed: 11/28/2022]
Abstract
In this work the mechanical response of the carotid arterial wall is studied. Some limitations of previous models of the arterial wall are overcomed and variability of the fitting problem is reduced. We review some experimental data from the literature and provide a constitutive model to characterize such data. A strain energy function is introduced including the behavior of cross-links between the main collagen fibers. With this function we are able to fit experimental data including information about the microstructure that previous models were not able to do. To demonstrate the applicability of the proposed model a patient-specific carotid artery geometry is reconstructed and simulated in a finite element framework, providing a microstructural description of the arterial wall. Our results qualitatively and quantitatively describe the experimental findings given in the literature fitting macroscopic mechanical tests and improving the features of previously developed models.
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Martínez MA, Romero H, Perotti NI. Two amplicon sequencing strategies revealed different facets of the prokaryotic community associated with the anaerobic treatment of vinasses from ethanol distilleries. BIORESOURCE TECHNOLOGY 2014; 153:388-392. [PMID: 24382487 DOI: 10.1016/j.biortech.2013.12.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 12/04/2013] [Accepted: 12/07/2013] [Indexed: 06/03/2023]
Abstract
The prokaryotic consortium from a pilot-scale UASB reactor fed with vinasses from ethanol distilleries was evaluated by means of amplicon sequencing of the 16S rRNA gene. Two different sets of primers targeted to overlapping regions of the V4-16S region were used to gain a broad picture of such community and to perform a comparative analysis. From the two datasets obtained, prevalent phyla were Firmicutes, Verrucomicrobia and Thermotogae. Interestingly, one set of primers captured variability in both the bacterial and archaeal portions of the community, whilst the other one revealed a more diverse community structure, but only in the Bacteria domain. Although a certain level of agreement between the two strategies was observed, sharp differences indicate that different facets of the community were disclosed by each approach.
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Espinosa Fernández MG, Sánchez Martínez JE, Roldán Mateo AM, Martínez MA. [Neonatal osteogenic mandibular distraction in patient diagnosed with Treacher Collins syndrome]. An Pediatr (Barc) 2013; 80:e52-3. [PMID: 24071556 DOI: 10.1016/j.anpedi.2013.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 04/30/2013] [Accepted: 05/19/2013] [Indexed: 11/15/2022] Open
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De la Torre A, Pacepavicius G, Martínez MA, Darling C, Muir D, Sherry J, McMaster M, Alaee M. Polybrominated diphenyl ethers and their methoxylated and hydroxylated analogs in Brown Bullhead (Ameiurus nebulosus) plasma from Lake Ontario. CHEMOSPHERE 2013; 90:1644-1651. [PMID: 23121987 DOI: 10.1016/j.chemosphere.2012.09.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2011] [Revised: 09/05/2012] [Accepted: 09/06/2012] [Indexed: 06/01/2023]
Abstract
Polybrominated diphenyl ethers (PBDEs), methoxylated PBDEs (MeO-PBDEs) and hydroxylated PBDEs (OH-PBDEs) were detected and quantified in Brown Bullhead (Ameiurus nebulosus) from Lake Ontario. Samples were collected in 2006 from three different locations near the city of Toronto: Frenchman's Bay, Toronto Island, and Tommy Thompson Park. A total of 117 plasma samples were pooled into 19 samples, separating males and females by site of capture. Pooled samples were analyzed for 36 PBDEs, 20 MeO-PBDEs and 20 OH-PBDEs, but only six PBDEs, five MeO- and eight OH-compounds were confirmed against standards currently available. These peaks were quantified as "identified" peaks, while peaks matching ion ratios but not matching the retention time of the available standards were quantified as "unidentified" peaks. Both "identified" and "unidentified" concentrations were combined to obtain a total concentration. No significant variations were obtained for total PBDE concentrations, ranging from 3.33 to 9.02 ng g(-1)wet weight. However, OH- and MeO-PBDE totals ranged over 1 order of magnitude among the samples (not detected - 3.57 ng g(-1)wet weight for OH-PBDEs and not detected -0.10 ng/g wet weight for MeO-PBDE). The results of this study suggested that these compounds are ubiquitous in biota. Source estimation of MeO- and OH-PBDEs in freshwater fish were discussed. Considering that up to date no freshwater sources for MeO- or OH-PBDEs have been reported, concentrations found should be mainly related to bioaccumulation from anthropogenic sources, although other sources could not be dismissed.
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de la Torre A, Alonso MB, Martínez MA, Sanz P, Shen L, Reiner EJ, Lailson-Brito J, Torres JPM, Bertozzi C, Marigo J, Barbosa L, Cremer M, Secchi E, Malm O, Eljarrat E, Barceló D. Dechlorane-related compounds in franciscana dolphin (Pontoporia blainvillei) from southeastern and southern coast of Brazil. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2012; 46:12364-12372. [PMID: 23016984 DOI: 10.1021/es302934p] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Concentrations of Dechlorane (Dec) 603 (0.75 ng/g lipid weight (lw); mean) and Dec 602 (0.38 ng/g lw; mean) were quantified in more than 95% of the franciscana (Pontoporia blainvillei) dolphin samples, whereas the frequency of detection decreased to 75% for Dechlorane Plus (DP) (1.53 ng/g lw, mean). The presence of Chlordene Plus (CP) was also observed (0.13 ng/g lw, mean) in half of the samples. On the contrary, Dec 604, decachloropentacyclooctadecadiene (aCl(10)DP), and undecachloropentacyclooctadecadiene (aCl(11)DP) concentrations were below the limit of quantifications in all cases. To the best of our knowledge, this is the first article reporting the presence of Dec 603, Dec 602, and CP in mammals. For comparative purposes, levels of Mirex, polybrominated diphenyl ethers (PBDEs), and decabromodiphenylethane (DBDPE) are also reported. Considering geographic distribution evaluation together with the strong positive correlations found between DP and PBDEs (r(s) = 0.63; p < 0.01), highly anthropogenic areas were identified as potential sources of these chemicals in this dolphin species. However, local sources for Dec 602, 603, Mirex, CP, and DBDPE were not found indicating that in this case historical use and/or atmospheric transport and deposition may play an important role in their fate.
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Gómez-Pintado P, Moreno R, Pérez-Valenzuela A, García-Falcés JI, García M, Martínez MA, Acín E, Fernández de la Hoz K. [Description of the first three notified outbreaks of influenza A (H1N1) 2009 in Spanish prisons]. REVISTA ESPANOLA DE SANIDAD PENITENCIARIA 2012; 12:29-36. [PMID: 23128486 DOI: 10.4321/s1575-06202010000100004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Accepted: 02/01/2010] [Indexed: 11/11/2022]
Abstract
AIM This study describes three reported outbreaks of influenza H1N1 2009 in Spanish prisons between july and september 2009. METHODS An outbreak was defined as the appearance of three or more cases with influenza symptoms and with an epidemiological link in the same module of a prison. The outbreaks were reported using a specific questionnaire. The analysis, which used variables of gender, age, date of notification, duration of outbreak, risk factors and clinical features are presented as absolute numbers, percentages and attack rates, while study of the diffusion of the illness is expressed as epidemic curves. RESULTS Three outbreaks were reported at the prisons of Alcala-Meco (85 affected males), Pamplona (18 affected males) and Jaen (12 affected females) with an overall attack rate that ranged from 7.1% to 17.9%. Duration of the outbreaks was between 8 and 35 days, and the average duration of the illness itself was 3 days. Only 4 inmates were admitted who were later given discharges for recovery. The men were younger (p<0.001). The epidemiological curves of the outbreaks did not show any clear propagation patterns. DISCUSSION The attack rates are highly variable although they are lower than other community outbreaks. Symptoms were slight and lethality was zero. The women's age was significantly greater that that of the men, although it is practically the same amongst the prison population. Low morbidity was very probably the cause of the reduction in consultations of the persons affected and the consequent underestimation of the rates.
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García A, Martínez MA, Peña E. Viscoelastic properties of the passive mechanical behavior of the porcine carotid artery: influence of proximal and distal positions. Biorheology 2012; 49:271-88. [PMID: 22836081 DOI: 10.3233/bir-2012-0606] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The viscoelastic properties of porcine carotid tissue are investigated in this work. Experimental uniaxial stress relaxation tests along the longitudinal and circumferential directions of the vessel were performed for carotid strips extracted from 10 vessels. Directional and local differences--distal versus proximal position--in the tissue behavior were investigated. The experimental tests reveal a highly anisotropic, non-linear viscoelastic response and local dependence of the samples. The carotid artery shows anisotropic relaxation behavior for both proximal and distal samples. The highest stress relaxation was found in the circumferential tensile test for the highest applied strain at the distal position. For the circumferential direction, the relaxation stress was higher than in the longitudinal being at its highest in the distal position. These facts show that the stress relaxation is higher in the distal than in the proximal position. However, there are no differences between both positions in the longitudinal direction. In addition, a constitutive law that takes into account the fundamental features, including non-linear viscoelasticity, of the arterial tissue is proposed. The present results are correlated with the purely elastic response and the microstructural analysis of the tissue by means of histological quantification presented in a previous study.
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Ríos A, López-Navas A, Ayala-García MA, Sebastián M, Febrero B, Ramírez EJ, Muñoz G, Palacios G, Rodríguez JS, Martínez MA, Nieto A, Martínez-Alarcón L, Ramis G, Ramírez P, Parrilla P. Multivariate analysis to determine the factors affecting the attitudes toward organ donation of healthcare assistants in Spanish and Mexican healthcare centers. Transplant Proc 2012; 44:1479-81. [PMID: 22841189 DOI: 10.1016/j.transproceed.2012.05.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND Healthcare assistants are an important group of workers who can influence public opinion. Their attitudes toward organ donation may influence public awareness of healthcare matters; negative attitudes toward donation and transplantation could have a negative impact on public attitudes. Our objective was analyze the attitudes of healthcare assistants, in Spanish and Mexican healthcare centers toward organ donation and determine factors affecting them using a multivariate analysis. MATERIAL AND METHODS As part of the "International Collaborative Donor Project," 32 primary care centers and 4 hospitals were selected in Spain and 5 hospitals in Mexico. A randomized sample of healthcare assistants was stratified according to healthcare services. Attitudes were evaluated using a validated questionnaire of the psychosocial aspects of donation, which was self-completed anonymously by the respondent. Statistical analysis used the chi-square test, Student t test, and logistic regression analysis. RESULTS Of 532 respondents, 66% in favored donation and 34% were against it or undecided. Upon multivariate analysis, the following variables had the most weight: 1) country of origin (Mexicans were more in favor than Spanish; odds ratio [OR]) = 1.964; P = .014); 2) a partner with a favorable attitude (OR = 2.597; P = .013); 3) not being concerned about possible bodily mutilation after donation (OR = 2.631; P = .006); 4) preference for options apart from burial for handling the body after death (OR = 4.694; P < .001) and 5) accepting an autopsy if one was needed (OR = 3.584; P < .001). CONCLUSIONS The attitudes of healthcare assistants toward organ donation varied considerably according to the respondent's country of origin. The psycho-social profile of a person with a positive attitude to donation was similar to that described within the general public.
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Di Lisio L, Sánchez-Beato M, Gómez-López G, Rodríguez ME, Montes-Moreno S, Mollejo M, Menárguez J, Martínez MA, Alves FJ, Pisano DG, Piris MA, Martínez N. MicroRNA signatures in B-cell lymphomas. Blood Cancer J 2012; 2:e57. [PMID: 22829247 PMCID: PMC3288280 DOI: 10.1038/bcj.2012.1] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Revised: 01/11/2012] [Accepted: 01/13/2012] [Indexed: 02/05/2023] Open
Abstract
Accurate lymphoma diagnosis, prognosis and therapy still require additional markers. We explore the potential relevance of microRNA (miRNA) expression in a large series that included all major B-cell non-Hodgkin lymphoma (NHL) types. The data generated were also used to identify miRNAs differentially expressed in Burkitt lymphoma (BL) and diffuse large B-cell lymphoma (DLBCL) samples. A series of 147 NHL samples and 15 controls were hybridized on a human miRNA one-color platform containing probes for 470 human miRNAs. Each lymphoma type was compared against the entire set of NHLs. BL was also directly compared with DLBCL, and 43 preselected miRNAs were analyzed in a new series of routinely processed samples of 28 BLs and 43 DLBCLs using quantitative reverse transcription-polymerase chain reaction. A signature of 128 miRNAs enabled the characterization of lymphoma neoplasms, reflecting the lymphoma type, cell of origin and/or discrete oncogene alterations. Comparative analysis of BL and DLBCL yielded 19 differentially expressed miRNAs, which were confirmed in a second confirmation series of 71 paraffin-embedded samples. The set of differentially expressed miRNAs found here expands the range of potential diagnostic markers for lymphoma diagnosis, especially when differential diagnosis of BL and DLBCL is required.
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De la Torre A, Concejero MA, Martínez MA. Concentrations and sources of an emerging pollutant, decabromodiphenylethane (DBDPE), in sewage sludge for land application. J Environ Sci (China) 2012; 24:558-563. [PMID: 22655373 DOI: 10.1016/s1001-0742(11)60801-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The presence of an emerging brominated flame retardant, decabromodiphenylethane (DBDPE), has been confirmed in Spanish sewage sludge. Thirty one samples from different urban wastewater treatment plants (WWTPs) were analyzed for this brominated flame retardant. DBDPE was positively identified and quantified in all samples at lower concentrations (47.0 +/- 29.7 ng/g dry weight (dw); mean +/- SD) than those obtained for decabromodiphenyl ether (BDE-209) (290 +/- 236 ng/g dw; mean +/- SD) in a previous study. Influence of the WWTP characteristics in the pollutant levels was evaluated. No significant correlations were obtained between DBDPE concentrations and the population or sewage sludge production rate associated with the plants, neither wastewater treatment method. Sources of DBDPE in the sludge were also evaluated. Data indicate a common origin for DBDPE and BDE-209, which may be related to leaching processes during the use and disposal of consumer products containing these chemicals. Nevertheless, DBDPE contents are not influenced by industrial activities, which suggests that the infusion of DBDPE commercial mixture is not a source of this chemical into the environment, and indicates that the use of DBDPE in the Spanish industry is still low compared to deca-BDE.
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Franco S, Bellido R, Aparicio E, Cañete N, García-Retortillo M, Solà R, Tural C, Clotet B, Paredes R, Martínez MA. Natural prevalence of HCV minority variants that are highly resistant to NS3/4A protease inhibitors. J Viral Hepat 2011; 18:e578-82. [PMID: 21914079 DOI: 10.1111/j.1365-2893.2011.01490.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Minority drug-resistant hepatitis C virus (HCV) variants may go undetected yet be clinically important. NS3/4A protease resistance substitutions V36A and A156S/T/V were selected in patients treated with protease inhibitors. The aim of this study was to investigate whether these substitutions pre-existed in HCV infected patients. An allele-specific PCR protocol that detected the NS3/4A protease resistance substitutions V36A and A156S/T/V was used to determine the prevalence of naturally occurring variants in 45 patients. All patient samples were infected with HCV of genotype 1b and were naïve for pegIFNα/ribavirin treatment. Thirty samples (67%) had at least one HCV PI-resistant variant. A156T (23, 51%) was detected more frequently than A156V (13, 29%) or A156S (1, 2%). V36A was detected in 12 samples (27%). These results demonstrate the high prevalence of minority drug-resistant NS3/4 protease resistance substitutions. Our results also demonstrate that allele-specific PCR can be used to detect minor HCV NS3 protease resistant variants in pretreatment samples and to study in detail the evolution of mutant viruses during targeted antiviral therapy.
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Del Pino J, Martínez MA, Castellano VJ, Ramos E, Martínez-Larrañaga MR, Anadón A. Effects of prenatal and postnatal exposure to amitraz on norepinephrine, serotonin and dopamine levels in brain regions of male and female rats. Toxicology 2011; 287:145-52. [PMID: 21708217 DOI: 10.1016/j.tox.2011.06.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Revised: 05/23/2011] [Accepted: 06/11/2011] [Indexed: 01/11/2023]
Abstract
The effects of maternal exposure to amitraz on brain region monoamine levels of male and female offspring rats at 60 days of age were observed. Maternal and offspring body weight, physical and general activity development were unaffected by the exposure of dams to amitraz (20mg/kgbw, orally on days 6-21 of pregnancy and 1-10 of lactation). Male and female offspring were sacrificed at 60 days of age and possible alterations in the content and metabolism of NE, DA and 5-HT were determined in brain regions by HPLC. The results showed that all these neurotransmitter systems were altered in a brain regional-related manner. In male and female offspring, amitraz induced a significant decrease in the prefrontal cortex 5-HT and its metabolite 5-HIAA and DA and its metabolites DOPAC and HVA levels with interaction of sex. Nevertheless, we verified that striatum DA and 5-HT and corresponding metabolite contents decreased in male and female offspring without statistical distinction of sex. In contrast, amitraz did not modify 5-HT content, but caused an increase in 5-HIAA content in the medulla oblongata and hippocampus in male and female offspring. Alterations in the hippocampus DA, DOPAC and HVA levels after amitraz exposure were also observed displaying a sex interaction. NE levels also showed a decrease after amitraz treatment in the prefrontal cortex and striatum without statistical sex interaction, but MHPG levels decreased in both regions with a sex interaction. Amitraz evoked increases in 5-HT turnover in the prefrontal cortex as well as in DA turnover in the striatum and hippocampus but decreases in NE turnover in the hypothalamus, prefrontal cortex and striatum. The present findings indicated that maternal exposure to amitraz altered noradrenergic, serotonergic and dopaminergic neurochemistry in their offspring in the prefrontal cortex, striatum and hippocampus, and those variations could be related to several alterations in the functions in which these brain regions are involved.
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De la Torre A, Alonso E, Concejero MA, Sanz P, Martínez MA. Sources and behaviour of polybrominated diphenyl ethers (PBDEs), polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) in Spanish sewage sludge. WASTE MANAGEMENT (NEW YORK, N.Y.) 2011; 31:1277-1284. [PMID: 21333518 DOI: 10.1016/j.wasman.2011.01.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Revised: 01/13/2011] [Accepted: 01/23/2011] [Indexed: 05/30/2023]
Abstract
Presence, sources and behaviour of polybrominated diphenyl ethers (PBDEs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were evaluated in Spanish sewage sludge. A total of 120 samples were seasonally collected from October 2005 to September 2006 at 31 urban wastewater treatment plants (WWTPs). Concentrations of PBDEs (ranging between 57.5 and 2606 ng/g dry weight) were two to three orders of magnitude higher than those obtained for PCDDs (0.17-5.03 ng/g d.w.) and PCDFs (0.05-3.07 ng/g d.w.). All the samples presented International Toxicity Equivalents (I-TEQ) levels (ranging between 2.06 and 44.4 ng/kg d.w.) below the limit values proposed by European Union for land application. Congener patterns evaluation revealed that the use of Deca-BDE commercial mixture seems to be the major source of PBDEs in the sludge. Nevertheless, origin of PCDD/Fs should be related to atmospheric deposition, faeces and presence of PCDD/Fs precursors such as pentachlorophenol in the sludge. No correlations (p>0.05) were found between pollutant concentrations (PBDEs and PCDD/Fs) and wastewater treatment plant (WWTP) characteristics (capacity nor sludge rate). Lower levels of PBDEs and PCDFs were found in WWTPs using biological nitrogen and phosphorous elimination, suggesting that these compounds are susceptible of microbial elimination. According to our knowledge, this is the first work comparing together both PBDEs and PCDD/Fs sludge patterns.
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Ríos A, López-Navas A, Ayala-Garcia MA, Sebastián MJ, Martínez-Alarcón L, Ramírez EJ, Muñoz G, Camacho A, Rodríguez JS, Martínez MA, Nieto A, Febrero B, Ramis G, Ramírez P, Parrilla P. Donation and transplantation among personnel in the hospital emergency department: a multicenter study conducted in Spain and Mexico. Transplant Proc 2011; 43:48-51. [PMID: 21335151 DOI: 10.1016/j.transproceed.2010.11.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION The promotion of different means of procuring both deceased and living organs (kidney and liver) is a necessity given the current organ shortage. Emergency department personnel are involved in the donation and transplantation process. Our objective was to analyze the attitude to the different kinds of organ donation of emergency services personnel in hospital centers in Spain and Mexico. MATERIALS AND METHODS A randomized sample was obtained from the "International Collaborative Donor Project" and was stratified according to emergency services and job category in nine hospitals, in Spain and in Mexico (n = 22). Attitude was evaluated using a validated survey. RESULTS Of the respondents, 76% were in favor of deceased organ donation and 24% were not in favor. This attitude toward deceased donation was associated with the respondent's country of origin, age, and job category; Mexicans (P = .036), younger respondents (P = .023), and physicians were most in favor (P < .001). With regard to attitude toward living kidney donation, 89% were in favor of related donation. Regarding living liver donation, 85% were in favor of related donation. In attitude toward living kidney and liver donation, relevant factors were related to donation and transplantation. CONCLUSIONS Professionals in emergency departments in hospital centers in Spain and Mexico had a favorable attitude toward the different kinds of donation, although it was less favorable than the attitude reported in other professional hospital groups.
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García A, Peña E, Laborda A, Lostalé F, De Gregorio MA, Doblaré M, Martínez MA. Experimental study and constitutive modelling of the passive mechanical properties of the porcine carotid artery and its relation to histological analysis: Implications in animal cardiovascular device trials. Med Eng Phys 2011; 33:665-76. [PMID: 21371929 DOI: 10.1016/j.medengphy.2011.01.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Revised: 12/30/2010] [Accepted: 01/04/2011] [Indexed: 10/18/2022]
Abstract
The present study focusses on the determination, comparison and constitutive modelling of the passive mechanical properties of the swine carotid artery over very long stretches in both proximal and distal regions. Special attention is paid to the histological and mechanical variations of these properties depending on the proximity to the heart. The results can have clinical relevance, especially in the research field of intravascular device design. Before the final clinical trials on humans, research in the vascular area is conducted on animal models, swine being the most common due to the similarities between the human and swine cardiovascular systems as well as the fact that the swine size is suitable for testing devices, in this case endovascular carotid systems. The design of devices usually involves numerical techniques, and an important feature is the appropriate modelling of the mechanical properties of the vessel. Fourteen carotid swine arteries were harvested just after sacrifice and cyclic uniaxial tension tests in longitudinal and circumferential directions were performed for distal and proximal samples. The stress-stretch curves obtained were fitted with a hyperelastic anisotropic model. Stress-free configuration states were also analyzed. Finally, human and swine samples were processed in a histological laboratory and images were used to quantify their microconstituents. The statistical analysis revealed significant differences between the mechanical behavior of proximal and distal locations in the circumferential but not in the longitudinal direction. Circumferential direction samples show clear differences both in residual stretches and tensile curves between the two locations, while the features of longitudinal specimens are independent of the axial position. The statistical analysis provides significant evidence of changes depending on the position of the sample, mainly in elastin and SMC quantification.
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Bárcena C, Martínez MA, Ortega MP, Muñoz HG, Sárraga GU. Mitochondria with tubulovesicular cristae in renal oncocytomas. Ultrastruct Pathol 2011; 34:315-20. [PMID: 21070162 DOI: 10.3109/01913123.2010.506021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Renal oncocytoma and chromophobe renal cell carcinoma (CRCC) are closely related tumors. They are considered the extremes of a spectrum with several variants. Ultrastructural examination of the mitochondria is a helpful procedure in the diagnosis of these neoplasms. Renal oncocytomas show mitochondria with piled lamellar cristae, and CRCC exhibited mitochondria with tubulovesicular cristae. In a series of 23 histologically diagnosed renal oncocytomas examined by electron microscopy, the authors found 5 tumors exhibiting more cells with mitochondria showing tubulovesicular cristae. The authors believe these 5 cases present a submicroscopic appearance intermediate between renal oncocytoma and CRCC, although with benign clinical behavior.
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Bernal J, Bernal JL, Martin MT, Nozal MJ, Anadón A, Martínez-Larrañaga MR, Martínez MA. Development and validation of a liquid chromatography-fluorescence-mass spectrometry method to measure glyphosate and aminomethylphosphonic acid in rat plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:3290-6. [PMID: 21106459 DOI: 10.1016/j.jchromb.2010.10.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Revised: 10/07/2010] [Accepted: 10/16/2010] [Indexed: 11/21/2022]
Abstract
A simple and fast method has been developed and validated to measure glyphosate (GLYP) and aminomethylphosphonic acid (AMPA) in rat plasma based on reversed-phase high performance liquid chromatography (RP-HPLC) coupled to fluorescence (FLD) and electrospray ionization mass spectrometry (ESI-MS) detection. After protein precipitation with acetonitrile, GLYP and AMPA were derivatized with 9-fluorenylmethylchloroformate (FMOC-Cl) and then separated on a C(12) column (250mm×4.60mm i.d.) using a gradient of an ammonium formate (20mM, pH 8.5) and acetonitrile mobile phase. Selected ion monitoring (SIM) mode of the MS was used to obtain maximum sensitivity when quantifying GLYP and AMPA. The validation shows the method to be consistent and reliable, with an intra- and inter-day precision for GLYP and AMPA>9% for both detectors. For both compounds the accuracy ranged from 2.1% to 7.8% for the intra-day readings, and from 4.1% to 8.6% for the inter-day values. The efficacy of GLYP extraction ranged from 87% to 93% and it was between 76% and 88% for AMPA. Moreover, the limits of quantification (LOQ) for GLYP and AMPA were 5 and 10ng/mL, respectively with FLD, and 0.4 and 2ng/mL with ESI-MS. The method was successfully applied to simultaneously measure both compounds in rat plasma samples several days after oral administration of glyphosate.
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Ríos A, López-Navas A, Ayala-García MA, Sebastián MJ, Abdo-Cuza A, Martínez-Alarcón L, López-López A, Ramírez EJ, Muñoz G, Camacho A, Suárez-López J, Castellanos R, Rodríguez JS, Martínez MA, Nieto A, Ramírez P, Parrilla P. Attitudes toward living kidney donation in transplant hospitals: a Spanish, Mexican, and Cuban multicenter study. Transplant Proc 2010; 42:228-32. [PMID: 20172317 DOI: 10.1016/j.transproceed.2009.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Living donor kidney (LKD) transplantation provides better results than deceased donor donation, involving minimum risk for the donor. However, LKD donation rates are low in most countries. We analyzed attitudes toward LKD in transplant hospitals in Spain, Mexico, and Cuba. MATERIALS AND METHODS Data were obtained from five transplant hospitals through the International Collaborative Program "Proyecto Donante Vivo, Murcia" in three countries: Spain (n = 1168), Mexico (n = 903), and Cuba (n = 202). The random sample (2273 employees) was stratified according to job category. The instrument used to evaluate attitude was a validated questionnaire. Statistical analysis included Student t test, the chi(2) test, and multivariate analysis. RESULTS Eighty eight percent (n = 2002) of Spanish, Mexican, and Cuban transplant hospital personnel were in favor of related LKD and 24% nonrelated LKD (n = 555). Attitudes were more favorable among centers in Cuba 97% (n = 195), followed by Mexico 88% (n = 793) and by Spain 87% (n = 1014; P < .001). According to job category, 91% (n = 617) of physicians were in favor, 88% (n = 543) of nurses, 85% (n = 198) of health care assistants, and 85% (n = 198) of auxiliary personnel. Attitudes were related to variables of: attitude toward deceased donation (P < .001), discussion about organ donation and transplantation (P < .001), concern about body mutilation after donation (P = .001), a possible need for a transplant in the future (P < .001), and attitude toward living liver donation (P < .001). CONCLUSIONS Attitudes toward LKD in Hispanic/Latin Transplant Hospitals were favorable and could encourage an increase in LKD in the coming years assuming suitable sociopolitical and economic condition, as well as support from nephrologists.
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Di Lisio L, Gómez-López G, Sánchez-Beato M, Gómez-Abad C, Rodríguez ME, Villuendas R, Ferreira BI, Carro A, Rico D, Mollejo M, Martínez MA, Menárguez J, Díaz-Alderete A, Gil J, Cigudosa JC, Pisano DG, Piris MA, Martínez N. Mantle cell lymphoma: transcriptional regulation by microRNAs. Leukemia 2010; 24:1335-42. [PMID: 20485376 DOI: 10.1038/leu.2010.91] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Mantle cell lymphoma (MCL) pathogenesis is still partially unexplained. We investigate the importance of microRNA (miRNA) expression as an additional feature that influences MCL pathway deregulation and may be useful for predicting patient outcome. Twenty-three MCL samples, eight cell lines and appropriate controls were screened for their miRNAs and gene expression profiles and DNA copy-number changes. MCL patients exhibit a characteristic signature that includes 117 miRNA (false discovery rate <0.05). Combined analysis of miRNAs and the gene expression profile, paired with bioinformatics target prediction (miRBase and TargetScan), revealed a series of genes and pathways potentially targeted by a small number of miRNAs, including essential pathways for lymphoma survival such as CD40, mitogen-activated protein kinase and NF-kappaB. Functional validation in MCL cell lines demonstrated NF-kappaB subunit nuclear translocation to be regulated by the expression of miR-26a. The expression of 12 selected miRNAs was studied by quantitative PCR in an additional series of 54 MCL cases. Univariate analysis identified a single miRNA, miR-20b, whose lack of expression distinguished cases with a survival probability of 56% at 60 months. In summary, using a novel bioinformatics approach, this study identified miRNA changes that contribute to MCL pathogenesis and markers of potential utility in MCL diagnosis and clinical prognostication.
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Anadón A, Martínez MA, Ares I, Ramos E, Martínez-Larrañaga MR, Contreras MM, Ramos M, Recio I. Acute and repeated dose (4 weeks) oral toxicity studies of two antihypertensive peptides, RYLGY and AYFYPEL, that correspond to fragments (90-94) and (143-149) from alpha(s1)-casein. Food Chem Toxicol 2010; 48:1836-45. [PMID: 20398720 DOI: 10.1016/j.fct.2010.04.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 03/24/2010] [Accepted: 04/09/2010] [Indexed: 11/17/2022]
Abstract
The Lowpept is a powdered casein hydrolysate containing the antihypertensive peptides RYLGY and AYFYPEL, two sequences that correspond to alpha(s1)-casein f (90-94) (RYLGY) and alpha(s1)-casein f (143-149) (AYFYPEL). To support the safety, Lowpept has been examined in an acute and in a 4-week repeated dose oral toxicity studies in rats. Powdered casein hydrolysate administered in a single oral gavage dose of 2000 mg/kg resulted in no adverse events or mortality. Also, casein hydrolysate administered as a daily dose of 1000 mg/kg for 4 weeks by gavage resulted in no adverse events or mortality. No evidence or treatment-related toxicity was detected during both studies. Data analysis of body weight gain, food consumption, clinical observations, blood biochemical, haematology, organ weight ratios and histopathological findings did not show significant differences between control and treated groups. It is concluded that the casein hydrolysate containing the peptides RYLGY and AYFYPEL orally administered to rats was safe and that not treatment-related toxicity was detected even at the highest doses investigated in both acute (2000 mg/kg of body weight) and repeated dose (4 weeks) oral (1000 mg/kg of body weight) toxicity studies.
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Anadón A, Martínez-Larrañaga MR, Martínez MA, Castellano VJ, Martínez M, Martin MT, Nozal MJ, Bernal JL. Toxicokinetics of glyphosate and its metabolite aminomethyl phosphonic acid in rats. Toxicol Lett 2009; 190:91-5. [PMID: 19607892 DOI: 10.1016/j.toxlet.2009.07.008] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 07/02/2009] [Accepted: 07/06/2009] [Indexed: 12/01/2022]
Abstract
The toxicokinetics of glyphosate after single 100 mgkg(-1) intravenous (i.v.) and 400 mgkg(-1) oral doses were studied in rats. Serial blood samples were obtained after i.v. and oral administration. Plasma concentrations of glyphosate and its metabolite amiomethyl phosphonic acid (AMPA) were determined by HPLC method. After i.v. and oral administration, plasma concentration-time curves were best described by a two-compartment open model. For glyphosate, the elimination half-lives (T(1/2beta)) from plasma were 9.99 h after i.v. and 14.38 h after oral administration. The total plasma clearance was not influenced by dose concentration or route and reached a value of 0.995 l h(-1)kg(-1). After i.v. administration, the apparent volume of distribution in the second compartment (V(2)) and volume of distribution at steady state (V(ss)) were 2.39 and 2.99 l kg(-1), respectively, suggesting a considerable diffusion of the herbicide into tissues. After oral administration, glyphosate was partially and slowly absorbed with a T(max) of 5.16 h. The oral bioavailability of glyphosate was found to be 23.21%. Glyphosate was converted to AMPA. The metabolite AMPA represented 6.49% of the parent drug plasma concentrations. The maximum plasma concentrations of glyphosate and AMPA were 4.62 and 0.416 microg ml(-1), respectively. The maximum plasma concentration of AMPA was achieved at 2.42 h. For AMPA, the elimination half-life (T(1/2beta)) was 15.08 h after oral administration of glyphosate parent compound.
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Ulibarri JI, Burgos R, Lobo G, Martínez MA, Planas M, Pérez de la Cruz A, Villalobos JL. [Recommendations for assessing the hyponutrition risk in hospitalised patients]. NUTR HOSP 2009; 24:467-472. [PMID: 19721927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2008] [Accepted: 09/02/2008] [Indexed: 05/28/2023] Open
Abstract
Given the frequency and clinical, social, and economic implications of hospital hyponutrition and the usual lack of sensibility before this problem from health care professionals, it seemed appropriate to create a working group within the Spanish Society of Parenteral and Enteral Nutrition (SENPE), which will lead to consensus recommendations on hyponutrition assessment among hospitalised patients. At a first stage, it seemed interesting to elaborate some recommendations on early and regular detection of hyponutrition among patients admitted to our hospitals. After carefully reviewing the screening methods published, the group considers that using screening methods should be recommended according to the possibilities at each centre in order to detect those patients that will further need a more complete evaluation of their nutritional status and, in case of necessary, to establish a nutritional action plan.
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Puig JG, Martínez MA, Mora M, Fraile JM, Montoya F, Torres RJ. Serum urate, metabolic syndrome, and cardiovascular risk factors. A population-based study. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2008; 27:620-3. [PMID: 18600515 DOI: 10.1080/15257770802138582] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We studied the associations between serum urate levels (determined in 503 subjects from a population of 1,344 subjects living in northern Madrid) and both the metabolic syndrome (MS) (defined by the Adult Treatment Panel III criteria) and C-reactive protein (CRP, determined in 382 subjects). MS was diagnosed in 25% (95%CI, 21-28%) and was associated with hyperuricemia (p<0.001). There was a graded increase in serum urate levels with increasing number of MS components. Urate concentrations significantly correlated with waist circumference (r=0,455, p<0.01). Serum urate was not independently associated with CRP levels. This study shows that serum urate levels are associated with the presence of MS and each of its features.
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