PMID- 22407468 OWN - NLM STAT- MEDLINE DCOM- 20121128 LR - 20180126 IS - 1559-0720 (Electronic) IS - 0163-4984 (Linking) VI - 148 IP - 3 DP - 2012 Sep TI - In utero and lactational lanthanum exposure induces olfactory dysfunction associated with downregulation of betaIII-tubulin and olfactory marker protein in young rats. PG - 383-91 LID - 10.1007/s12011-012-9386-9 [doi] AB - We evaluated the role of betaIII-tubulin in the morphology of olfactory receptor neuron (ORN) and olfactory dysfunction in offspring caused by prenatal and postnatal lanthanum exposure. Pregnant rats were exposed to 0.25% lanthanum chloride in drinking water from gestational day (GD) 7 until postnatal day 21. From postnatal day 23 until postnatal day 28, pups were examined with buried food pellet and olfactory maze test. The ultrastructural features of ORNs in the olfactory epithelium (OE) were observed by transmission electron microscope. The expression of betaIII-tubulin and olfactory marker protein (OMP) in the tissue sections and homogenates of OE were, respectively, measured by immunodetection and western blot. Behavioral analysis of olfaction showed that lanthanum chloride exposure induced olfactory dysfunction. Offsprings exposed to lanthanum chloride showed enlarged ORN knobs and a decreased number of cilia. In addition, the levels of OMP and betaIII-tubulin expression in lanthanum chloride exposure offsprings significantly decreased. Developmental lanthanum exposure could impair olfaction, and this deficit may be attributed to the downregulation of betaIII-tubulin and OMP in the OE. FAU - Hao, Shuai AU - Hao S AD - Department of Otolaryngology, First Affiliated Hospital of China Medical University, No. 155, Nanjing North Street, Heping District, Shenyang, Liaoning 110001, People's Republic of China. FAU - Yu, Fei AU - Yu F FAU - Yan, Aihui AU - Yan A FAU - Zhang, Yang AU - Zhang Y FAU - Han, Jiali AU - Han J FAU - Jiang, Xuejun AU - Jiang X LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120310 PL - United States TA - Biol Trace Elem Res JT - Biological trace element research JID - 7911509 RN - 0 (Olfactory Marker Protein) RN - 0 (Tubulin) RN - 04M8624OXV (lanthanum chloride) RN - 6I3K30563S (Lanthanum) SB - IM MH - Animals MH - Female MH - Immunohistochemistry MH - Lanthanum/*toxicity MH - Male MH - Microscopy, Electron, Transmission MH - Olfactory Marker Protein/metabolism MH - Olfactory Mucosa/metabolism MH - Olfactory Receptor Neurons/drug effects/metabolism MH - Pregnancy MH - Rats MH - Tubulin/*metabolism EDAT- 2012/03/13 06:00 MHDA- 2012/12/10 06:00 CRDT- 2012/03/13 06:00 PHST- 2012/02/08 00:00 [received] PHST- 2012/03/01 00:00 [accepted] PHST- 2012/03/13 06:00 [entrez] PHST- 2012/03/13 06:00 [pubmed] PHST- 2012/12/10 06:00 [medline] AID - 10.1007/s12011-012-9386-9 [doi] PST - ppublish SO - Biol Trace Elem Res. 2012 Sep;148(3):383-91. doi: 10.1007/s12011-012-9386-9. Epub 2012 Mar 10.