title: Beneficial effects of quercetin on titanium dioxide nanoparticles induced spermatogenesis defects in mice.
abstract: Many recent studies have demonstrated that most nanoparticles (NPs) have an adverse or toxic action on male germ cells. In present study, protective effect of quercetin (Que) on titanium dioxide nanoparticle (NTiO2)-induced spermatogenesis defects in mice was investigated. Thirty-two Naval Medical Research Institute (NMRI) mice were randomly divided into four groups. Que group received 75 mg/kg of Que for 42 days. NTiO2group received 300 mg/kg NTiO2for 35 days. NTiO2+ Que group initially received 75 mg/kg Que for 7 days and was followed by concomitant administration of 300 mg/kg NTiO2for 35 days. Control group received only normal saline for 42 days. Sperm parameters, testosterone concentration, histological criteria, and apoptotic index were assessed. Product of lipid peroxidation (MDA), superoxide dismutase (SOD), and catalase (CAT) activities were also evaluated for oxidative stress in testicular tissue. Administration of NTiO2significantly induced histological changes in testicular tissue; increased apoptotic index; and decreased testicular weight, testosterone concentration, and sperm quality (p < 0.01). In the testis, NTiO2increased oxidative stress through an increase in lipid peroxidation and a decrease in SOD and CAT activities (p < 0.05). Que pretreatment could significantly attenuate testicular weight; apoptotic index; and histological criteria including vacuolization, detachment, and sloughing of germ cells in seminiferous tubules. Serum and tissue testosterone levels were significantly increased in Que-pretreated mice (p < 0.01). Sperm parameters including sperm number, motility, and percentage of abnormality were also effectively improved by Que pretreatment (p < 0.01). Pretreatment of Que significantly ameliorated oxidative stress and increased the activities of SOD and CAT in testicular tissue. These results indicate that sperm production can be increased by Que pretreatment in NTiO2-intoxicated mice. The improved sperm quality and reverse testis histology by Que pretreatment may be a consequence of elevation testosterone concentration, reduction in germ cell apoptosis, and suppression of oxidative stress in testicular tissue.
authors.affiliation: Cell and Molecular Research Center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, P. O. Box: 61335, Ahvaz, Iran. khorsandi_cmrc@yahoo.com.|Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. khorsandi_cmrc@yahoo.com.
authors.forename: Layasadat
authors.initials: L
authors.lastname: Khorsandi
authors.affiliation: Cell and Molecular Research Center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, P. O. Box: 61335, Ahvaz, Iran.|Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Mahmoud
authors.initials: M
authors.lastname: Orazizadeh
authors.affiliation: Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Nahid
authors.initials: N
authors.lastname: Moradi-Gharibvand
authors.affiliation: Fertility, Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Masoud
authors.initials: M
authors.lastname: Hemadi
authors.affiliation: Cell and Molecular Research Center, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, P. O. Box: 61335, Ahvaz, Iran.|Department of Anatomical Sciences, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
authors.forename: Esrafil
authors.initials: E
authors.lastname: Mansouri
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D017209:Apoptosis; D015227:Lipid Peroxidation; D008297:Male; D051379:Mice; D053758:Nanoparticles / Q000633:toxicity*; D018384:Oxidative Stress; D011794:Quercetin / Q000494:pharmacology*; D013076:Sperm Count; D013091:Spermatogenesis; D013094:Spermatozoa / Q000187:drug effects; D013482:Superoxide Dismutase; D013737:Testis / Q000187:drug effects; D013739:Testosterone; D014025:Titanium
chemical_list: D000975:Antioxidants; C009495:titanium dioxide; D013739:Testosterone; D011794:Quercetin; D014025:Titanium; D013482:Superoxide Dismutase
keywords: Apoptosis; Mice; Quercetin; Sperm quality; Stress oxidative; Titanium dioxide nanoparticles