Inhalation Toxicology

IITRI offers comprehensive preclinical inhalation toxicology services for development of inhaled drugs, infectious aerosol exposure studies, occupational health and environmental risk assessments, and electronic cigarette or flavor studies. Our highly experienced team is ready to offer assistance to sponsors who are new to the inhalation route of dosing in preclinical studies.

Preclinical Development of Inhaled Drugs

Our comprehensive preclinical inhalation toxicity testing programs utilizing pulmonary drug delivery are customized to support GLP-compliant IND submissions for pharmaceuticals and the intended inhalation delivery device. We also offer early preclinical and NDA-enabling studies.

Inhalation Exposure Methods

Our laboratories are well equipped with multi-port inhalation exposure systems to perform nose-only inhalation toxicity studies on mice, rats, rabbits, canines and non-human primates (NHPs), including:

  • Nose only or whole body inhalation exposure (rodents)
  • Oronasal inhalation exposure (large animals)
  • API-sparing dry powder or liquid intratracheal administration for use with limited availability of test article
  • Intranasal dosing

Test Article Aerosol Generation Methods

The development of methods for test article aerosol generation with a particle size range allowing lung deposition is the first step in any inhalation exposure study. Our expert staff has decades of experience working with a wide range of chemicals and drugs with complex properties, including:

  • Gasses or vapors
  • Liquids and suspensions
  • Powders, fibers or nanoparticles
  • Metered dose inhaler formulations and devices
  • Electronic cigarettes or tobacco product smoke

Infectious Disease Aerosol Exposure Challenge Studies

We offer high-containment GLP-compliant Biosafety Level (BSL)-2 and BSL-3+ infectious disease preclinical efficacy and toxicity studies utilizing inhaled biologics. These include using aerosol pathogen exposure methods for animal model challenge studies, or inhalation drug administration for the treatment of high pathogen infectious agents.

  • Proprietary bioaerosol exposure system
  • Rodents, rabbits and nonhuman primates (NHPs)
  • Viral and bacterial pathogens

Occupational Inhalation Exposure and Environmental Risk

Chemicals, metals and pesticides often must be tested for potential occupational or environmental health hazards with inhalation exposure. Occupational inhalation toxicology studies are conducted in all relevant animal models in accordance with testing guidelines of the FDA, EPA, OECD and other regulatory agencies to determine potential health risks.

  • OECD 403 (rats)
  • OECD 414 (rats, rabbits)

Electronic Cigarettes and Flavors (E-cigs) or Tobacco Products

IITRI has conducted large studies for the inhalation toxicology testing of cigarette smoke, and we now offer pulmonary toxicology studies for electronic cigarettes and flavors (E-cigs). We established a GLP analytical smoke chemistry program in 2000 for the determination of analytes of cigarette smoke, and are experts in the isolation and analysis of smoke components.

  • Electronic cigarette and flavors (E-cigs) toxicity
  • Smoke (tobacco products) chemistry and toxicity

The IITRI Advantage

  • Expertise in aerosol science and inhalation exposure with study teams including PhD aerosol scientists in addition to DABT toxicologists
  • Comprehensive preclinical testing programs available to support IND and NDA submissions for drugs utilizing inhalation drug delivery
  • Personalized program design to meet your specific needs including non-standard and customized studies
  • On-site bioanalytical laboratory to support GLP requirements for toxicology studies