PMID- 23928832 OWN - NLM STAT- MEDLINE DCOM- 20140930 LR - 20141120 IS - 1477-0903 (Electronic) IS - 0960-3271 (Linking) VI - 33 IP - 3 DP - 2014 Mar TI - The effect of lead exposure on tracheal responsiveness to methacholine and ovalbumin, total and differential white blood cells count, and serum levels of immunoglobulin E, histamine, and cytokines in guinea pigs. PG - 325-33 LID - 10.1177/0960327113499040 [doi] AB - The effect of exposure to inhaled lead acetate in guinea pigs was evaluated. The present study comprised of five groups of guinea pigs including control (C), sensitized to ovalbumin (OA; S) and three groups exposed to 0.1, 0.2, and 0.4 M inhaled lead (Pb; n = 6 for each group). Tracheal responsiveness to methacholine and OA, total and differential white blood cells (WBCs) count in lung lavage, serum levels of cytokines (interferon gamma (IFN-gamma) and interleukin 4 (IL-4)), histamines, and immunoglobulin E (IgE), and Pb concentration in lung were measured. Tracheal responsiveness to methacholine, OA, total and differential WBC types as well as IL-4, IFN-gamma, histamine, and IgE were significantly increased but IFN-gamma/IL-4 were significantly decreased in sensitized animals as well as those exposed to high Pb concentrations when compared with the control group (from p < 0.05 to p < 0.001). In addition, there was not a significant difference in most measured values between animals exposed to high Pb concentration and group S. The Pb concentration in lung tissues of animals exposed to all three Pb concentrations was significantly higher than that of group C (p < 0.001 for all cases).These results showed that inhaled lead acetate exposure can induce lung inflammatory changes similar to sensitized animals. Therefore, exposure to environmental Pb pollution may cause asthma-like changes. FAU - Farkhondeh, T AU - Farkhondeh T AD - 1Department of Toxicology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Islamic Republic of Iran. FAU - Boskabady, M H AU - Boskabady MH FAU - Jalali, S AU - Jalali S FAU - Bayrami, G AU - Bayrami G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130808 PL - England TA - Hum Exp Toxicol JT - Human & experimental toxicology JID - 9004560 RN - 0 (Bronchodilator Agents) RN - 0 (Cytokines) RN - 0 (Serine Proteinase Inhibitors) RN - 0W5ETF9M2K (Methacholine Chloride) RN - 207137-56-2 (Interleukin-4) RN - 2P299V784P (Lead) RN - 37341-29-0 (Immunoglobulin E) RN - 820484N8I3 (Histamine) RN - 82115-62-6 (Interferon-gamma) RN - 9006-59-1 (Ovalbumin) SB - IM MH - Animals MH - Blood Cell Count MH - Bronchoalveolar Lavage Fluid/cytology MH - Bronchodilator Agents/*pharmacology MH - Cytokines/*metabolism MH - Dose-Response Relationship, Drug MH - Female MH - Guinea Pigs MH - Histamine/*metabolism MH - Immunoglobulin E/*metabolism MH - In Vitro Techniques MH - Interferon-gamma/metabolism MH - Interleukin-4/metabolism MH - Lead/metabolism/*toxicity MH - Lead Poisoning/*pathology MH - Leukocyte Count MH - Leukocytes/*drug effects MH - Male MH - Methacholine Chloride/*pharmacology MH - Muscle Contraction/drug effects MH - Ovalbumin/*pharmacology MH - Serine Proteinase Inhibitors/*pharmacology MH - Trachea/*drug effects/metabolism/*physiopathology OTO - NOTNLM OT - Lead acetate OT - asthma OT - inflammation OT - sensitized animals OT - tracheal responsiveness EDAT- 2013/08/10 06:00 MHDA- 2014/10/01 06:00 CRDT- 2013/08/10 06:00 PHST- 2013/08/10 06:00 [entrez] PHST- 2013/08/10 06:00 [pubmed] PHST- 2014/10/01 06:00 [medline] AID - 0960327113499040 [pii] AID - 10.1177/0960327113499040 [doi] PST - ppublish SO - Hum Exp Toxicol. 2014 Mar;33(3):325-33. doi: 10.1177/0960327113499040. Epub 2013 Aug 8.