Results 21 to 30 of about 340,971 (308)

Carbonyl Compounds Containing Formaldehyde Produced from the Heated Mouthpiece of Tobacco Sticks for Heated Tobacco Products

Molecules, 2020
Diverse harmful compounds can be emitted during the heating of tobacco sticks for heated tobacco products (HTPs). In this study, the generation of harmful compounds from the filter, instead of tobacco in tobacco sticks, was confirmed.
Yong-Hyun Kim, Young-Ji An, Jae-Won Shin
doaj   +1 more source

Comparison of volatile organic compounds between cigarette smoke condensate (CSC) and extract (CSE) samples [PDF]

Environmental Health and Toxicology, 2018
Cigarette smoke is a major risk factor for several diseases, including chronic obstructive pulmonary and cardiovascular diseases. The toxicity of the cigarette smoke can be determined in vitro.
Yong-Hyun Kim, Young-Ji An, Seongwon Jo, Sang-Hyub Lee, Sang Jin Lee, Seong-Jin Choi, Kyuhong Lee   +6 more
doaj   +1 more source

Improved Metered Dose Inhaler Technique When a Coordination Cap Is Used [PDF]

, 2014
Background: Patients often experience problems using metered dose inhalers (MDIs), particularly poor coordination between inhalation start and dose actuation (TsIn: time difference between the start of an inhalation and the actuation of a dose), and fast
Stephenson, John, Jessica Campbell, Chrystyn, Henry, John Stephenson, Azouz, Wahida, Campbell, Jessica, Saralaya, Dinesh, Dinesh Saralaya, Wahida Azouz, Henry Chrystyn, Stephenson, John; id_orcid   +10 more
core   +1 more source

Modulated Uniaxial Compression Analysis of Respirable Pharmaceutical Powders

KONA Powder and Particle Journal, 2020
We describe a new instrument and method for measuring compressed bulk density of respirable pharmaceutical powders under low compression pressure: the modulated compression tester.
David Barona, Abouzar Shamsaddini, Maximilian Aisenstat, Kyrre Thalberg, David Lechuga-Ballesteros, Behzad Damadzadeh, Reinhard Vehring   +6 more
doaj   +1 more source

Developmental toxicity of combined ethylbenzene and methylethylketone administered by inhalation to rats [PDF]

, 2006
Pregnant Sprague–Dawley rats were exposed to ethylbenzene (EB; 0, 250, or 1000 ppm) and methylethylketone (MEK; 0, 1000, or 3000 ppm), alone and in combination, by inhalation, for 6 h/day, during days 6–20 of gestation.
Cadot, R., Bourges-Abella, Nathalie, Gallissot, Frédéric, Sabaté, Jean-Philippe, Morel, G., Lambert, A.M., Saillenfait, Anne-Marie   +6 more
core   +1 more source

Pulmonary toxicity of printer toner following inhalation and intratracheal instillation

, 2022
S.679-690The pulmonary effects of a finished toner were evaluated in intratracheal instillation and inhalation studies, using toners with external additives (titanium dioxide nanoparticles and amorphous silica nanoparticles).
Morimoto, Yasuo, Kambara, Tatsunori, Creuzenberg, Otto, Oyabu, Takako, Horie, Masanori, Kuroda, Etsushi, Izumi, Hiroto, Hansen, Tanja, Bellmann, Bernd, Pohlmann, Gerhard, Schuhardt, Sven, Ernst, Heinrich   +11 more
core   +1 more source

Oxidant-induced epithelial alarmin pathway mediates lung inflammation and functional decline following ultrafine carbon and ozone inhalation co-exposure

Redox Biology, 2021
Environmental inhalation exposures are inherently mixed (gases and particles), yet regulations are still based on single toxicant exposures. While the impacts of individual components of environmental pollution have received substantial attention, the ...
Nairrita Majumder, William T. Goldsmith, Vamsi K. Kodali, Murugesan Velayutham, Sherri A. Friend, Valery V. Khramtsov, Timothy R. Nurkiewicz, Aaron Erdely, Patti C. Zeidler-Erdely, Vince Castranova, Jack R. Harkema, Eric E. Kelley, Salik Hussain   +12 more
doaj   +1 more source

Use of Portable Air Purification Systems to Eliminate Aerosol Particles from Patient Rooms

Aerosol and Air Quality Research, 2022
SARS-CoV-2 is mainly transmitted via airborne aerosols. We determined the efficacy of two different indoor air-purification systems and compared them to conventional measures of room ventilation.
Dominic Dellweg, Gerhard Scheuch, Thomas Voshaar, Dieter Köhler   +3 more
doaj   +1 more source

Oxidized carbon black nanoparticles induce endothelial damage through C-X-C chemokine receptor 3-mediated pathway

Redox Biology, 2021
Oxidation of engineered nanomaterials during application in various industrial sectors can alter their toxicity. Oxidized nanomaterials also have widespread industrial and biomedical applications.
Nairrita Majumder, Murugesan Velayutham, Dimitrios Bitounis, Vamsi K. Kodali, Md Habibul Hasan Mazumder, Jessica Amedro, Valery V. Khramtsov, Aaron Erdely, Timothy Nurkiewicz, Philip Demokritou, Eric E. Kelley, Salik Hussain   +11 more
doaj   +1 more source

Pulmonary response to toner, TiO2 and crystalline silica upon chronic inhalation exposure in syrian golden hamsters

, 2022
S.699-729A chronic inhalation study of a test toner, TiO2, and crystalline silica was conducted by exposure of groups of Syrian golden hamsters (strain: Han:AURA) for 6 h/day, 5 days/wk for 18 mo.
Bellmann, B., Muhle, H., Ernst, H., Mohr, H., Creutzenberg, O., Koch, W., Dasenbrock, C.   +6 more
core   +1 more source