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      COMPARISON OF ORGANOCHLORINE PESTICIDE LEVELS BETWEEN HUMAN BLOOD SERUM AND ADIPOSE TISSUE Translated title: COMPARACIÓN DE NIVELES DE PLAGUICIDAS ORGANOCLORADOS ENTRE SUERO SANGUINEO HUMANO Y TEJIDO ADIPOSO

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          Abstract

          ABSTRACT The organochlorine pesticides, being lipophilic compounds, show extremely high thermodynamic stability and resistance to degradation processes in the environment and in living organisms. They accumulate in lipid rich tissues and distribute between transport compartment (blood) and store compartment (adipose tissue). The purpose of this study is to make a comparison between organochlorine pesticide levels in blood serum and adipose tissue and calculate the differences in their concentrations based on routine biomonitoring study. One hundred and twenty six pair samples of adipose tissue and blood serum during autopsies as a case study were taken and analyzed in Los Mochis Sinaloa, México. Among organochlorine pesticides, higher concentrations correspond to b-HCH, pp’DDE and op’DDT in blood serum lipids; and pp’DDT shows higher concentrations in adipose tissue. Using statistical comparisons, we found a significant linear association of lipid serum organochlorine pesticide concentrations with that in adipose tissue. This concludes that serum lipid organochlorine pesticide concentrations represent an important indicator for both human biological matrices.

          Translated abstract

          RESUMEN Los plaguicidas organoclorados son compuestos lipofílicos que presentan estabilidad termodinámica alta y resistencia a los procesos de degradación ambiental y en los organismos vivos. Se acumulan en tejidos ricos en lípidos y se distribuyen entre el compartimento de transporte (sangre) y el compartimento de almacenamiento (tejido adiposo). El objetivo de este estudio fue comparar los niveles de plaguicidas organoclorados en suero sanguíneo y tejido adiposo, así como calcular sus diferencias en concentraciones en ambas matrices biológicas, tomando como base un estudio rutinario de biomonitoreo. Ciento veintiséis pares de muestras de suero sanguíneo y tejido adiposo fueron tomadas durante autopsias y analizadas como estudios de caso en Los Mochis, Sinaloa México. Entre las concentraciones más altas de plaguicidas organoclorados en lípidos de suero sanguíneo, se encuentra el b-HCH, pp´DDE y op´DDT, mientras que en el tejido adiposo el insecticida organoclorado pp’DDT reveló mayor concentración. Aplicando comparaciones estadísticas, se calculó una asociación lineal significativa entre las concentraciones de plaguicidas organoclorados en lípidos del suero sanguíneo comparandas con las del tejido adiposo. Esto permite concluir que las concentraciones de plaguicidas organoclorados en los lípidos del suero sanguíneo, representan un importante indicador para ambas matrices biológicas humanas.

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          Most cited references23

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          Chlorinated hydrocarbon levels in human serum: Effects of fasting and feeding

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            Quantitative interpretation of human biomonitoring data.

            Biomonitoring, the measurement of chemicals in human tissues and fluids, is becoming commonplace, and biomonitoring data has proved to be an important resource for identifying the presence of chemicals, both natural and synthetic, in human populations. However, the concentrations of the chemicals detected in human samples are generally very low, typically in the parts per billion (ppb) or parts per trillion (ppt) range, and the degree of risk posed by these chemicals depends on whether the exposure levels approach those known to cause toxicity in test animals or people. Unfortunately, it is often difficult to relate a measured concentration of a chemical in a human tissue or fluid to the administered doses used in animal toxicity studies. As the number of chemicals identified in human tissues increases, so does the challenge for providing a risk context for the observed concentrations. Moreover, the challenges associated with interpretation of biomonitoring data on different classes of chemicals can be quite different. This review focuses on the use of pharmacokinetic modeling, and in particular, physiologically based pharmacokinetic (PBPK) modeling, to support the interpretation of human biomonitoring data from the perspective of exposure reconstruction and risk characterization. A general approach, referred to as reverse dosimetry, is described for estimating the distribution of exposure levels in the environment that could give rise to measured biomarker concentrations in a population. These exposure distributions can be compared to regulatory exposure guidance values or no-effect levels in toxicity studies to put potential risks in context.
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              Persistent organochlorine and organobromine compounds in mother's milk from Sweden 1996-2006: compound-specific temporal trends.

              High body burdens of persistent halogenated organic pollutants (POPs) among pregnant and nursing women are of concern because of exposure of the growing foetus and breast-feeding infant. We examined the temporal trends of polychlorinated biphenyls (PCBs), dibenzo-p-dioxin (PCDDs) and dibenzofurans (PCDFs), polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCD) in milk samples from Swedish women. POPs were analysed in individual mother's milk samples from randomly recruited primiparas (N=335) who lived in Uppsala County and delivered between 1996 and 2006. Results were adjusted for life-style factors that are associated with POP body burdens. PCB levels declined 3.9-8.6% per year. The levels of PCDDs decreased faster (6-9% per year) than the levels of PCDFs (3-6% per year). Temporal trends of PBDEs did not follow any consistent pattern. Concentrations of BDE-47 and BDE-99 decreased, while the concentrations of BDE-153 increased. No change in BDE-100 concentrations was observed. In most samples, concentrations of HBCD were below the quantification limit (<0.20 ng/g lipid). Generally, adjustment of the temporal trends of PCBs and PCDD/Fs for personal characteristics of the mothers (age, body mass index (BMI), weight changes during and after pregnancy) resulted in faster declining rates, with age having the greatest influence. The age of the participating mothers increased during the study period, and since the POP levels increased with increasing age, this counteracted the decreasing temporal trends in the unadjusted model. It is consequently important to include personal characteristics in the analysis of temporal trends of POPs. Compound-specific temporal trends are probably caused by differences in sources of exposure, as well as by differences in persistence between compounds.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rica
                Revista internacional de contaminación ambiental
                Rev. Int. Contam. Ambient
                Centro de Ciencias de la Atmósfera, UNAM (México, DF, Mexico )
                0188-4999
                2017
                : 33
                : 3
                : 393-401
                Affiliations
                [5] orgnameUniversidad Popular Autónoma del Estado de Puebla orgdiv1Departamento de Ciencias Biológicas Mexico
                [3] Ciudad de México orgnameUniversidad Nacional Autónoma de México orgdiv1Centro de Ciencias de la Atmósfera Mexico
                [4] Guasave orgnameInstituto Politécnico Nacional orgdiv1Centro Interdisciplinario de Investigación para el Desarrollo Integral Regional Mexico
                [1] Los Mochis orgnameUniversidad de Occidente orgdiv1Instituto de Investigación en Ambiente y Salud Mexico
                [2] Xalapa orgnameUniversidad Veracruzana orgdiv1Centro de Investigaciones Biomédicas Mexico
                Article
                S0188-49992017000300393
                10.20937/rica.2017.33.03.03
                953070c9-8bed-42a3-83d2-12b18805b2a2

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 01 October 2016
                : 01 April 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 24, Pages: 9
                Product

                SciELO Mexico


                plasma,matrices biológicas,toxicocinética,tejido graso,biological matrices,toxicokinetic,fat tissue

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