Antioxidant capacity and biomarkers of oxidative stress in saliva of khat-chewing patients: a case-control study.
Oral Surg Oral Med Oral Pathol Oral Radiol
; 127(1): 49-54, 2019 Jan.
Article
em En
| MEDLINE
| ID: mdl-30121165
ABSTRACT
OBJECTIVES:
The aim of this study was to investigate the antioxidant levels and biomarkers of oxidative stress in saliva from khat-chewing patients compared with controls. STUDYDESIGN:
Saliva samples were collected from 51 chronic khat chewers and 46 age- and sex-matched controls. Concentrations of oxidative stress biomarkers (malonyl-dialdehyde [MDA], protein carbonyl, and 8-hydroxy-2'-deoxyguanosine) and antioxidant defense (total antioxidant capacity [TAC], superoxide dismutase, glutathione peroxidase, and catalase [CAT) were analyzed.RESULTS:
Salivary MDA level in the khat users group (45 ± 9.2 nmol/mL) was significantly increased in comparison with controls (13 ± 2.1 nmol/mL; P < .001), but there were no significant differences between the 2 groups regarding the levels of salivary protein carbonyl and oxidized guanine species. Salivary TAC was significantly reduced in khat users (0.25 ± 0.028 mmol/L) in comparison with controls (0.34 ± 0.037 mmol/L). Salivary CAT level was significantly reduced in khat users (6.0 ± 0.47 U/mL) in comparison with controls (7.7 ± 0.43 units/mL; P <.05), but no significant differences were observed between the 2 groups with regard to salivary superoxide dismutase or glutathione peroxidase levels.CONCLUSIONS:
Chronic khat chewing is associated with increased levels of salivary MDA and reduced levels of TAC and CAT among a population of adult men in comparison with non-khat-chewing controls. These findings suggest that the pro-oxidative effect of khat chewing may be a contributing mechanism for various oral diseases associated with khat use, including cancer, periodontitis, and caries.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estresse Oxidativo
/
Catha
/
Antioxidantes
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Adult
/
Humans
/
Male
Idioma:
En
Revista:
Oral Surg Oral Med Oral Pathol Oral Radiol
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Jordânia