Recent exposure to ultrafine particles in school children alters miR-222 expression in the extracellular fraction of saliva

Annette Vriens*; Tim Nawrot; Nelly Saenen; Eline Provost; Michal Kicinski; Karen Vrijens; Patrick De Boever; Michelle Plusquin

doi:10.1289/isee.2016.3778

Recent exposure to ultrafine particles in school children alters miR-222 expression in the extracellular fraction of saliva

Environmental Health ◽

10.1186/s12940-016-0162-8 ◽

2016 ◽

Vol 15 (1) ◽

Cited By ~ 17

Author(s):

Annette Vriens ◽

Tim S. Nawrot ◽

Nelly D. Saenen ◽

Eline B. Provost ◽

Michal Kicinski ◽

...

Keyword(s):

School Children ◽

Ultrafine Particles ◽

Recent Exposure ◽

Extracellular Fraction

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BREATHE Project (Brain Development and Air Pollution ultrafine particles in school children): Research protocol and first results.

ISEE Conference Abstracts ◽

10.1289/isee.2013.p-1-05-10 ◽

2013 ◽

Vol 2013 (1) ◽

pp. 3617

Author(s):

Mar Álvarez Pedrerol ◽

Joan Forns ◽

Jesús Pujol ◽

Xavier Querol ◽

Jordi Sunyer

Keyword(s):

Air Pollution ◽

Brain Development ◽

School Children ◽

Ultrafine Particles ◽

Research Protocol ◽

First Results

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Human Health Risk to Ultrafine Particles in Jakarta

Kesmas National Public Health Journal ◽

10.21109/kesmas.v4i2.189 ◽

2009 ◽

Vol 4 (2) ◽

pp. 65

Author(s):

Budi Haryanto

Keyword(s):

Elementary School ◽

Particulate Matter ◽

School Children ◽

Ultrafine Particles ◽

Elementary School Children ◽

Personal Exposure ◽

The Road ◽

Private Car ◽

On The Road ◽

At Home

In Jakarta, the main pollution sources are vehicles and industry, with motorized traffic accounting for 71% of the oxides of nitrogen (NOX), 15% of sulphur-dioxide (SO2), and 70% of particulate matter (PM 10 ) of the total emission load. Both urban population size and the fraction of the population that owns a pri-vate vehicle are increasing. The study objective is to determine the numbers of ultrafine particulate matter with an aerodynamic diameter of 0.1 mm or less, or PM0.1 inhaled by elementary school children, commute workers with private car and commute workers with public transport. A cross-sectional study design is implemented in Jakarta 2005. Ten elementary school children, ten commuters with private car and ten commuters with public transports are purpo-sively selected as subjects and measured personally for 3 x 24 hours using Condensation Particle Counter (CPC) real-time personal exposure measurement (measured in terms of the number of particles per cubic centimeter, or # cm-3). The average concentration of ultrafine particulate matter of elementary school children at home, on the road and at school is 29,254/cm3, 147,897/cm3 and 61,033/cm3 respectively. For those commuters with private car at home, on the road and at office is 29,213/cm3, 310,179/cm3 and 42,496/cm3 respectively. For those commuters with public transport, the concentration average of at home, on the road and at office is found higher: 35,332/cm3, 453,547/cm3, and 69,867/cm3, respectively. Keywords: Ultrafine particles, human health riskAbstrakPerhatian terhadap pencemaran udara ini menjadi semakin meningkat ketika banyak diketemukan dampaknya pada anak-anak, terutama kaitannya dengan insidens dan prevalens asma. Sumber utama pencemaran udara di Jakarta adalah dari kendaraan bermotor dan industri, dimana transportasi berkontribusi terhadap 71% NOX, 15% SO 2, dan 70% partikel debu kurang dari 10 mikronmeter (PM 10). Tujuan penelitian mengetahui jumlah partikel debu berdiameter ultrafine (partikel berukuran <0,1 mm) yang terhirup oleh anak sekolah dasar, pekerja pengguna kendaraan pribadi dan kendaraan umum. Studi ini menggunakan desain crosssectional dan dilakukan di Jakarta tahun 2005. Sebanyak 30 responden anak sekolah dasar, pekerja pengguna kendaraan pribadi dan kendaraan umum dipilih secara purposif sebagai subyek penelitian. Jumlah partikel ultrafine terhirup secara individu diukur selama 3 x 24 jam menggunakan Condensation Particle Counter (CPC) real time personal exposure measurement (jumlah ultrafine partikel per cm 3). Rerata konsentrasi partikel ultrafine terhirup pada anak sekolah dasar di rumah, di perjalanan, dan di sekolah adalah berurutan sebagai berikut: 29.254/cm 3, 147.897/cm 3 dan 61.033/cm 3. Pada pekerja pengguna kendaraan pribadi di rumah, di perjalanan, dan di kantor diperoleh rerata konsentrasi secara berurutan sebagai berikut: 29.213/cm 3, 310.179/cm 3 dan 42.496/cm 3. Sedangkan pada pekerja pengguna kendaraan umum adalah: 35.332/cm 3 di rumah, 453.547/cm 3 di perjalanan, dan 69.867/cm 3 di kantor. Kata kunci : Partikel ultrafine, risiko kesehatan manusia

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Epidemiology of congenital heart disease. Observations in 17,366 Denver school children

JAMA ◽

10.1001/jama.195.13.1107 ◽

1966 ◽

Vol 195 (13) ◽

pp. 1107-1110 ◽

Cited By ~ 2

Author(s):

W. E. Morton

Keyword(s):

Congenital Heart Disease ◽

Heart Disease ◽

School Children ◽

Congenital Heart

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Studies of copper selenide ultrafine particles by newly developed gas evaporation method

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100174667 ◽

1990 ◽

Vol 48 (4) ◽

pp. 306-307

Author(s):

Chihiro Kaito ◽

Yoshio Saito

Keyword(s):

Crystal Structure ◽

Ultrafine Particles ◽

Fine Particles ◽

Production Method ◽

Atmospheric Temperature ◽

Copper Selenide ◽

Quartz Boat ◽

Selenium Vapor ◽

Ar Gas ◽

Ultra Fine Particles

The direct evaporation of metallic oxides or sulfides does not always given the same compounds with starting material, i.e. decomposition took place. Since the controll of the sulfur or selenium vapors was difficult, a similar production method for oxide particles could not be used for preparation of such compounds in spite of increasing interest in the fields of material science, astrophysics and mineralogy. In the present paper, copper metal was evaporated from a molybdenum silicide heater which was proposed by us to produce the ultra-fine particles in reactive gas as shown schematically in Figure 1. Typical smoke by this method in Ar gas at a pressure of 13 kPa is shown in Figure 2. Since the temperature at a location of a few mm below the heater, maintained at 1400° C , were a few hundred degrees centigrade, the selenium powder in a quartz boat was evaporated at atmospheric temperature just below the heater. The copper vapor that evaporated from the heater was mixed with the stream of selenium vapor,and selenide was formed near the boat. If then condensed by rapid cooling due to the collision with inert gas, thus forming smoke similar to that from the metallic sulfide formation. Particles were collected and studied by a Hitachi H-800 electron microscope.Figure 3 shows typical EM images of the produced copper selenide particles. The morphology was different by the crystal structure, i.e. round shaped plate (CuSe;hexagona1 a=0.39,C=l.723 nm) ,definite shaped p1 ate(Cu5Se4;Orthorhombic;a=0.8227 , b=1.1982 , c=0.641 nm) and a tetrahedron(Cu1.8Se; cubic a=0.5739 nm). In the case of compound ultrafine particles there have been no observation for the particles of the tetrahedron shape. Since the crystal structure of Cu1.8Se is the anti-f1uorite structure, there has no polarity.

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Crystal structure-size relationship in ultrafine metallic particles

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100153300 ◽

1989 ◽

Vol 47 ◽

pp. 266-267

Author(s):

Jun Liu ◽

Mehmet Sarikaya ◽

Ilhan A. Aksay

Keyword(s):

Ultrafine Particles ◽

Carbon Film ◽

Lattice Defects ◽

Careful Examination ◽

Seeded Growth ◽

Gold Particles ◽

Metallic Particles ◽

Interfacial Structures ◽

Typical Particle ◽

Many Particles

Ultrafine particles usually have unique physical properties. This study illustrates how the lattice defects and interfacial structures between particles are related to the size of ultrafine crystalline gold particles.Colloidal gold particles were produced by reducing gold chloride with sodium citrate at 100°C. In this process, particle size can be controlled by changing the concentration of the reactant. TEM samples are prepared by transferring a small amount of solution onto a thin (5 nm) carbon film which is suspended on a copper grid. In this work, all experiments were performed with Philips 430T at 300 kV.With controlled seeded growth, particles of different sizes are produced, as shown in Figure 1. By a careful examination, it can be resolved that very small particles have lattice defects with complex interfaces. Some typical particle structures include multiple twins, resulting in a five-fold symmetry bicrystals, and highly disordered regions. Many particles are too complex to be described by simple models.

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Teacher Identification of Elementary School Children with Hearing Loss

Language Speech and Hearing Services in Schools ◽

10.1044/0161-1461.0901.24 ◽

1978 ◽

Vol 9 (1) ◽

pp. 24-28 ◽

Cited By ~ 1

Author(s):

Richard H. Nodar

Keyword(s):

Elementary School ◽

Hearing Loss ◽

School Children ◽

Elementary School Children ◽

Total Sample ◽

Hearing Impaired ◽

Teacher Interviews ◽

Teacher Screening ◽

Children With Hearing Loss ◽

Hearing Problems

The teachers of 2231 elementary school children were asked to identify those with known or suspected hearing problems. Following screening, the data were compared. Teachers identified 5% of the children as hearing-impaired, while screening identified only 3%. There was agreement between the two procedures on 1%. Subsequent to the teacher interviews, rescreening and tympanometry were conducted. These procedures indicated that teacher screening and tympanometry were in agreement on 2% of the total sample or 50% of the hearing-loss group. It was concluded that teachers could supplement audiometry, particularly when otoscopy and typanometry are not available.

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Early-Childhood Education for the Developmentally Delayed: Diagnosis, Intervention, and Evaluation

Language Speech and Hearing Services in Schools ◽

10.1044/0161-1461.1002.81 ◽

1979 ◽

Vol 10 (2) ◽

pp. 81-92

Author(s):

Susan Freedman Gilbert

Keyword(s):

Early Childhood ◽

Early Childhood Education ◽

School Children ◽

Developmental Delays ◽

Delayed Diagnosis ◽

Language Impairments ◽

Developmentally Delayed ◽

Speech And Language ◽

Childhood Education

This paper describes the referral, diagnostic, interventive, and evaluative procedures used in a self-contained, behaviorally oriented, noncategorical program for pre-school children with speech and language impairments and other developmental delays.

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Use of Revision by Elementary-School Stutterers and Nonstutterers during Oral Reading

Journal of Speech and Hearing Research ◽

10.1044/jshr.1604.584 ◽

1973 ◽

Vol 16 (4) ◽

pp. 584-585 ◽

Cited By ~ 7

Author(s):

Franklin H. Silverman ◽

Dean E. Williams

Keyword(s):

Elementary School ◽

School Children ◽

Oral Reading ◽

Elementary School Children ◽

Reading Errors

This paper describes a dimension of the stuttering problem of elementary-school children—less frequent revision of reading errors than their nonstuttering peers.

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