title: Interactions between cadmium and zinc in the biological samples of Pakistani smokers and nonsmokers cardiovascular disease patients.
abstract: The pathogenesis of some cardiovascular diseases (CVDs) has been altered with changes in the balance of certain trace and toxic elements. The aim of the present study was to assess the role of zinc (Zn) and cadmium (Cd) in smoker and nonsmoker male CVD patients (n = 457) of two age groups (31-45) and (46-60). The both elements were determined in biological samples (scalp hair, blood, and urine) of CVD patients and healthy referents for comparison purpose. The concentrations of Zn and Cd were measured by atomic absorption spectrophotometer prior to microwave-assisted acid digestion. It was observed that the mean values of Cd were significantly higher in the biological samples of smokers CVD as compared to nonsmoker CVD patients, while the level of Zn was lower in both smoker and nonsmoker patients. The concentrations of Zn in whole blood and scalp hair samples were lower in CVD patients as compared to referents (p > 0.001). Results showed significant changes of levels of Cd and Zn in blood and scalp hair samples of CVD patients when compared with healthy referents, while reverse in the case of urine samples. It was observed that low Zn levels were associated with both smoker and nonsmoker CVD patients, while increased cadmium accumulation was observed in smoker patients as compared to nonsmoker patients (p > 0.025).
authors.affiliation: National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan. hassanimranafridi@yahoo.com
authors.forename: Hassan Imran
authors.initials: HI
authors.lastname: Afridi
authors.forename: Tasneem Gul
authors.initials: TG
authors.lastname: Kazi
authors.forename: Naveed
authors.initials: N
authors.lastname: Kazi
authors.forename: Ghulam Abbas
authors.initials: GA
authors.lastname: Kandhro
authors.forename: Jameel Ahmed
authors.initials: JA
authors.lastname: Baig
authors.forename: Mohammad Khan
authors.initials: MK
authors.lastname: Jamali
authors.forename: Mohammad Balal
authors.initials: MB
authors.lastname: Arain
authors.forename: Abdul Qadir
authors.initials: AQ
authors.lastname: Shah
mesh_terms: D000328:Adult; D002104:Cadmium / Q000737:chemistry / Q000378:metabolism*; D002318:Cardiovascular Diseases / Q000097:blood* / Q000453:epidemiology / Q000652:urine*; D003430:Cross-Sectional Studies; D016021:Epidemiologic Studies; D006197:Hair / Q000737:chemistry*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010154:Pakistan / Q000453:epidemiology; D012535:Scalp / Q000737:chemistry*; D012907:Smoking; D015032:Zinc / Q000737:chemistry / Q000378:metabolism*
chemical_list: D002104:Cadmium; D015032:Zinc