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1. Red blood cell transport mechanisms in polyester thread-based blood typing devices.

Author

Nilghaz A, Ballerini DR, Guan L, Li L, and Shen W

Subjects
Blood Grouping and Crossmatching methods, Erythrocytes immunology, Humans, Immunoassay methods, Blood Grouping and Crossmatching instrumentation, Erythrocytes cytology, Fluorescent Antibody Technique methods, Immunoassay instrumentation, Polyesters chemistry
Abstract

A recently developed blood typing diagnostic based on a polyester thread substrate has shown great promise for use in medical emergencies and in impoverished regions. The device is easy to use and transport, while also being inexpensive, accurate, and rapid. This study used a fluorescent confocal microscope to delve deeper into how red blood cells were behaving within the polyester thread-based diagnostic at the cellular level, and how plasma separation could be made to visibly occur on the thread, making it possible to identify blood type in a single step. Red blood cells were stained and the plasma phase dyed with fluorescent compounds to enable them to be visualised under the confocal microscope at high magnification. The mechanisms uncovered were in surprising contrast with those found for a similar, paper-based method. Red blood cell aggregates did not flow over each other within the thread substrate as expected, but suffered from a restriction to their flow which resulted in the chromatographic separation of the RBCs from the liquid phase of the blood. It is hoped that these results will lead to the optimisation of the method to enable more accurate and sensitive detection, increasing the range of blood systems that can be detected.

Published
2016
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2. Liquid marbles as micro-bioreactors for rapid blood typing.

Author

Arbatan T, Li L, Tian J, and Shen W

Subjects
Cells, Cultured, Humans, Microspheres, Solutions, Bioreactors, Blood Grouping and Crossmatching instrumentation, Blood Grouping and Crossmatching methods, Erythrocytes immunology, Immunoassay instrumentation, Immunoassay methods, Microfluidics instrumentation, Microfluidics methods
Abstract

A liquid marble micro- bioreactor is used to conduct blood typing as a typical biological assay. This study portrays the potential of using such microreactors for biochemical and biological analysis., (Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2012
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3. Kinetics of specific and nonspecific adhesion of red blood cells on glass.

Author

Xia Z, Goldsmith HL, and van de Ven TG

Subjects
Antibodies, Antigens, Binding Sites, Biophysical Phenomena, Biophysics, Cell Adhesion, Cell Size, Erythrocytes immunology, Glass, Humans, In Vitro Techniques, Kinetics, Models, Biological, Spherocytes cytology, Spherocytes immunology, Erythrocytes cytology
Abstract

Fixed spherical human red blood cells suspended in 17% sucrose were allowed to adhere on either clean glass surfaces or glass surfaces preincubated with antibodies specific to a certain blood group antigen. The adhesion experiments were performed in an impinging jet apparatus, in which the cells are subjected to stagnation point flow. The objective of this study was to compare the efficiencies of nonspecific and specific (antigen-antibody mediated) adhesion of red blood cells on glass surfaces. The efficiency was defined as the ratio of the experimental adhesion rate to that calculated based on numerical solutions of the mass transfer equation, taking into account hydrodynamic interactions as well as colloidal forces. The efficiency for nonspecific adhesion was nearly unity at flow rates lower than 85 microliter/s (corresponding to a wall shear rate, Gw, of 30 s-1 at a radial distance of 110 microns from the stagnation point). The values of efficiency dropped at higher flow rates, due to an increase in the tangential force. The critical deposition concentration is found to occur at 120-150 mM NaCl, which is consistent with the theoretically predicted values. At low salt concentrations, the experimental values are higher than the theoretical ones. Similar discrepancies have been found in many colloidal systems. Introducing steric repulsion by adsorbing a layer of albumin molecules on the glass completely prevents nonspecific adhesion at flow rates below 60 microliter/s (Gw congruent to 15 s-1). The efficiency of specific adhesion depends both on the concentration of antibody molecules on the surface and the flow rate. Normal red cells adhere more readily through antigen-antibody bonds than fixed cells. Fixed spherical cells have a higher adhesion efficiency than fixed biconcave ones.

Published
1993
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4. Bulky DNA adducts, 4-aminobiphenyl-haemoglobin adducts and diet in the European Prospective Investigation into Cancer and Nutrition (EPIC) prospective study

Author

Carmen Martinez, Petra H.M. Peeters, Merethe Kumle, Paolo Vineis, Armelle Munnia, Seymour Garte, Bas Bueno-de-Mesquita, Emmanuelle Gormally, Ole Raaschou-Nielsen, Antonio Agudo, Giuseppe Matullo, Bengt Järvholm, Françoise Clavel-Chapelon, José Ramón Quirós, Göran Berglund, Marco Peluso, Alison M. Dunning, Rosario Tumino, Alessandro Colombi, Salvatore Panico, Timothy J. Key, Luisa Airoldi, Elio Riboli, S Bingham, Fabrizio Veglia, Rudolf Kaaks, Antonia Trichopoulou, Aurelio Barricarte, Vittorio Krogh, Christian Malaveille, Nicholas E. Day, Kim Overvad, Rodolfo Saracci, Herman Autrup, María José Tormo, Domenico Palli, J. Linseisen, Heiner Boeing, Miren Dorronsoro, Faculteit Medische Wetenschappen/UMCG, Peluso, M, Airoldi, L, Munnia, A, Colombi, A, Veglia, F, Autrup, H, Dunning, A, Garte, S, Gormally, E, Malaveille, C, Matullo, G, Overvad, K, Raaschou Nielsen, O, Clavel Chapelon, F, Linseisen, J, Boeing, H, Trichopoulou, A, Palli, D, Krogh, V, Tumino, R, Panico, Salvatore, Bueno De Mesquita, Bh, Peeters, Ph, Kumle, M, Agudo, A, Martinez, C, Dorronsoro, M, Barricarte, A, Tormo, Mj, Quiros, Jr, Berglund, G, Jarvholm, B, Day, Ne, Key, Tj, Saracci, R, Kaaks, R, Riboli, E, Bingham, S, Vineis, P., [Peluso,M, Munnia, A] Cancer Risk Factor Branch, Analytical and Biomolecular Cytology Unit, CSPO-Scientific Institute of Tuscany, Florence, Italy. [Airoldi,L, Colombi,A] Istituto di Ricerche Farmacologiche Mario Negri, Milan, Italy. [Veglia, F, Matullo,G] ISI Foundation, Turin, Italy. [Autrup,H] Department of Environmental and Occupational Medicine, Aarhus, Denmark. [Dunning, A] Department of Oncology, University of Cambridge, Cambridge, UK. [Garte,S] Genetics Research Institute, Milan, Italy. [Gormally,E, Malaveille,C] International Agency for Research on Cancer, Lyon, France. [Overhad,K] Department of Clinical Epidemiology, Aalborg Hospital, Aarhus University Hospital, Aalborg, Denmark. [Raaschou-Nielsen,O] Institute of Cancer Epidemiology, Danish Cancer Society, Copenhagen, Denmark. [Clavel-Chapelon,F] INSERM (Institut National de la Sante´ et de la Recherche Me´dicale), ERI 20, EA 4045, and Institut Gustave Roussy, Villejuif, F-94805, France. [Linseisen,J] Division of Clinical Epidemiology, Deutsches Krebsforschungszentrum, Heidelberg, German. [Boeing,H] German Institute of Human Nutrition, Potsdam-Rehbu¨cke, Germany. [Trichopoulou,A] Department of Hygiene and Epidemiology, Medical School, University of Athens, Athens, Greece. [Palli,D] Molecular and Nutritional Epidemiology Unit, CSPO-Scientific Institute of Cancer Prevention Tuscany Region, Florence, Italy. [Krogh,V] Department of Epidemiology, National Cancer Institute, Milan, Italy. [Tumino,R] Cancer Registry, Azienda Ospedaliera ‘Civile MP Arezzo’, Ragusa, Ital. [Panico,S] Dipartimento di Medicina Clinica e Sperimentale, Universita` Federico II, Naples, Italy. [Bueno-De-Mesquita,BH] Centre for Nutrition and Health, National Institute for Public Health and the Environment, Bilthoven, The Netherland. [Peeters,PH] Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht, The Netherlands. [Kumle,M] Institute of Community Medicine, University of Tromso, Tromso, Norway. [Agudo,A] Department of Epidemiology, Catalan Institute of Oncology, Barcelona, Spain. [Martinez,C] Andalusian School of Public Health, Granada, Spain. [Dorronsoro,M] Department of Public Health of Guipuzkoa, San Sebastian, Spain. [Barricarte,A] Public Health Institute, Navarra, Spain. [Tormo,MJ] Epidemiology Department, Murcia Health Council, Murcia, Spain. Quiros, JR] Direccio´n General de Salud Pu´blica, Consejerı´a de Salud y Servicios Sanitarios Asturias, Oviedo, Spain. [Berglund,G] Malmo¨ Diet and Cancer Study, Lund University, Malmo¨, Sweden. [Jarvholm,G] Department of Nutritional Research, University of Umea˚, Umea˚ , Sweden. [Day,ND, Bingham,S] MRC Dunn Human Nutrition Unit, Cambridge University, UK. [Key,TJ].Cancer Research UK Epidemiology Unit, University of Oxford, Oxford, UK. [Saracci,R] IFC National Research Council, Pisa, Italy. [Kaas,R] Division of Epidemiology, DKFZ Heidelberg, Germany. [Riboli,E] Imperial College London, London, UK. [Vineis,P] University of Turin, Turin, Italy. Department of Epidemiology and Public Health, Imperial College of Science, Technology and Medicine, Norfolk Place, London W2 1PG, UK, This paper was made possible by a grant of the European Community (5th Framework Programme) to P. V. (grant QLK4–CT–1999–00 927) and a grant of the Compagnia di San Paolo to the ISI Foundation. All authors are independent from funders. Mortality data for the Netherlands were obtained from Statistics Netherlands. Also, the work described in the paper was carried out with the financial support of: Europe Against Cancer Program of the European Commission (SANCO), ISCIII, Red de Centros RCESP, C03/09, Deutsche Krebshilfe, Deutsches Krebsforschungszentrum, German Federal Ministry of Education and Research, Danish Cancer Society, Health Research Fund (FIS) of the Spanish Ministry of Health, Spanish Regional Governments of Andalucia, Asturias, Basque Country, Murcia and Navarra, Cancer Research UK, Medical Research Council, UK, Stroke Association, UK, British Heart Foundation, Department of Health, UK, Food Standards Agency, UK, Wellcome Trust, UK, Greek Ministry of Health, Greek Ministry of Education, Italian Association for Research on Cancer (AIRC), Italian National Research Council, Dutch Ministry of Public Health, Welfare and Sports, World Cancer Research Fund, Swedish Cancer Society, Swedish Scientific Council, Regional Government of Ska°ne, Sweden, Norwegian Cancer Society, and Research Council of Norway.

Subjects
Dietary Fiber, Male, Aflatoxin, Erythrocytes, Chemicals and Drugs::Amino Acids, Peptides, and Proteins::Proteins::Blood Proteins::Hemoglobins [Medical Subject Headings], medicine.medical_treatment, air pollution, RESISTANT STARCH, Medicine (miscellaneous), GUIDELINES, Carcinógenos, Body Mass Index, COLORECTAL-CANCER, Food group, chemistry.chemical_compound, Hemoglobins, Vegetables, Chemicals and Drugs::Chemical Actions and Uses::Toxic Actions::Environmental Pollutants::Air Pollutants [Medical Subject Headings], Leukocytes, Aductos de ADN, Nutritional Physiological Phenomena, Food science, Prospective Studies, RISK, DNA adducts, Haemoglobin adducts, Non-smokers, Fibre intake, Air pollution, Publication Characteristics::Study Characteristics::Multicenter Study [Medical Subject Headings], Air Pollutants, Nutrition and Dietetics, Chemistry, Technology, Industry, Agriculture::Food and Beverages::Food::Dietary Fiber [Medical Subject Headings], Chemicals and Drugs::Chemical Actions and Uses::Toxic Actions::Noxae::Carcinogens [Medical Subject Headings], COLON-CANCER, Phenomena and Processes::Genetic Phenomena::Genetic Processes::DNA Damage::DNA Adducts [Medical Subject Headings], Fabaceae, Middle Aged, fibre intake, European Prospective Investigation into Cancer and Nutrition, Europe, Biochemistry, 4-Aminobiphenyl, Colonic Neoplasms, Hemoglobinas, Female, SMOKERS, Alcohol Drinking, BLADDER-CANCER, European Prospective Investigation into Cancer and Nutrition (EPIC), haemoglobin adducts, non-smokers, RATS, POLYCYCLIC AROMATIC-HYDROCARBONS, Ozone, LUNG-CANCER, DNA adduct, medicine, Humans, Contaminantes del aire, ddc:610, Carcinogen, Aged, Estudio multicéntrico, Vitamin E, Fruit, Multivariate Analysis, Fibras en la dieta, Carcinogens, Biomarkers, Food contaminant
Abstract

Udgivelsesdato: 2008-Feb-14 In contrast to some extensively examined food mutagens, for example, aflatoxins, N-nitrosamines and heterocyclic amines, some other food contaminants, in particular polycyclic aromatic hydrocarbons (PAH) and other aromatic compounds, have received less attention. Therefore, exploring the relationships between dietary habits and the levels of biomarkers related to exposure to aromatic compounds is highly relevant. We have investigated in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort the association between dietary items (food groups and nutrients) and aromatic DNA adducts and 4-aminobiphenyl-Hb adducts. Both types of adducts are biomarkers of carcinogen exposure and possibly of cancer risk, and were measured, respectively, in leucocytes and erythrocytes of 1086 (DNA adducts) and 190 (Hb adducts) non-smokers. An inverse, statistically significant, association has been found between DNA adduct levels and dietary fibre intake (P = 0.02), vitamin E (P = 0.04) and alcohol (P = 0.03) but not with other nutrients or food groups. Also, an inverse association between fibre and fruit intake, and BMI and 4-aminobiphenyl-Hb adducts (P = 0.03, 0.04, and 0.03 respectively) was observed. After multivariate regression analysis these inverse correlations remained statistically significant, except for the correlation adducts v. fruit intake. The present study suggests that fibre intake in the usual range can modify the level of DNA or Hb aromatic adducts, but such role seems to be quantitatively modest. Fibres could reduce the formation of DNA adducts in different manners, by diluting potential food mutagens and carcinogens in the gastrointestinal tract, by speeding their transit through the colon and by binding carcinogenic substances.

Published
2008