title: Physical, chemical, and immunohistochemical investigation of the damage to salivary glands in a model of intoxication with aluminium citrate.
abstract: Aluminum absorption leads to deposits in several tissues. In this study, we have investigated, to our knowledge for the first time, aluminum deposition in the salivary glands in addition to the resultant cellular changes in the parotid and submandibular salivary glands in a model of chronic intoxication with aluminum citrate in rats. Aluminum deposits were observed in the parotid and submandibular glands. Immunohistochemical evaluation of cytokeratin-18 revealed a decreased expression in the parotid gland with no changes in the submandibular gland. A decreased expression of α-smooth muscle actin was observed in the myoepithelial cells of both glands. The expression of metallothionein I and II (MT-I/II), a group of metal-binding proteins, which are useful indicators for detecting physiological responses to metal exposure, was higher in both glands. In conclusion, we have shown that at a certain time and quantity of dosage, aluminum citrate promotes aluminum deposition in the parotid and submandibular glands, leads to an increased expression of MT-I/II in both the glands, damages the cytoskeleton of the myoepithelial cells in both glands, and damages the cytoskeleton of the acinar/ductal cells of the parotid glands, with the submandibular glands showing resistance to the toxicity of the latter.
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. natacha_malu@hotmail.com.
authors.forename: Natacha M M
authors.initials: NM
authors.lastname: da Costa
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. russellsantiago@hotmail.com.
authors.forename: Russell S
authors.initials: RS
authors.lastname: Correa
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. ismaeljunior7@hotmail.com.
authors.forename: Ismael S M
authors.initials: IS
authors.lastname: Júnior
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. adilsonlogia@yahoo.com.br.
authors.forename: Adilson J R
authors.initials: AJ
authors.lastname: Figueiredo
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. kelly.vilhena@hotmail.com.
authors.forename: Kelly F B
authors.initials: KF
authors.lastname: Vilhena
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. paulo.junior@ics.ufpa.br.
authors.forename: Paulo M A
authors.initials: PM
authors.lastname: Farias-Junior
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. teixeira.f.bruno@gmail.com.
authors.forename: Francisco B
authors.initials: FB
authors.lastname: Teixeira
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. nayanamoraes89@hotmail.com.
authors.forename: Nayana M M
authors.initials: NM
authors.lastname: Ferreira
authors.affiliation: School of Chemistry, Institute of Exact and Natural Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. joaobatista.junior@gmail.com.
authors.forename: João B
authors.initials: JB
authors.lastname: Pereira-Júnior
authors.affiliation: School of Chemistry, Institute of Exact and Natural Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. kdgfernandes@ufpa.br.
authors.forename: Kelly das Graças F
authors.initials: Kd
authors.lastname: Dantas
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. marciaf@ufpa.br.
authors.forename: Marcia C F
authors.initials: MC
authors.lastname: da Silva
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil.
authors.forename: Ademir F
authors.initials: AF
authors.lastname: Silva-Junior
authors.affiliation: School of Dentistry, Institute of Health Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. sergioalves6@hotmail.com.
authors.forename: Sergio de M
authors.initials: Sde M
authors.lastname: Alves-Junior
authors.affiliation: School of Dentistry, Institute of Health Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. radface@hotmail.com.
authors.forename: João de Jesus V
authors.initials: Jde J
authors.lastname: Pinheiro
authors.affiliation: Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, 66075-900 Belém-Pará, Brazil. rafalima@ufpa.br.
authors.forename: Rafael Rodrigues
authors.initials: RR
authors.lastname: Lima
mesh_terms: D000818:Animals; D019343:Citric Acid / Q000633:toxicity*; D005786:Gene Expression Regulation / Q000187:drug effects; D007150:Immunohistochemistry; D008297:Male; D008668:Metallothionein / Q000235:genetics / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D012466:Salivary Gland Diseases / Q000139:chemically induced* / Q000378:metabolism / Q000473:pathology; D012469:Salivary Glands / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology*
chemical_list: D019343:Citric Acid; D008668:Metallothionein; C455846:aluminum citrate