title: Elevated serum silicon levels in women with silicone gel breast implants.
abstract: The metabolic fate of silicone gel leaked from an intact or ruptured prosthesis is unknown. In this study, serum was blindly assayed by inductively coupled plasma atomic emission spectroscopy (ICP-AES) for elemental silicon in 72 women with silicone gel breast implants and 55 control women (mean age 48 yr, both groups). Blood was drawn and processed using silicon-free materials. The mean silicon level in controls was 0.13 +/- 0.07 mg/L (range 0.06-0.35 mg/L), whereas in implant patients, the mean was significantly higher at 0.28 +/- 0.22 mg/L (range 0.06-0.87 mg/L) (P < 0.01, Student's t-test with correction for unequal variances). Using the mean of the control group + 2 SD as a cutoff for normal range (0.27 mg/L), 25/72 (34.7%) implant patients exceeded this value, compared with 2/55 (3.6%) controls. There was no significant correlation between past rupture of one or both implants, current rupture at the time of the blood draw, or the number of years with implants and silicon levels. The results suggest that serum silicon levels are elevated in many women with silicone gel breast implants. The chemical species involved and kinetics of this elevation remain to be determined.
authors.affiliation: Division of Rheumatology, Allergy and Clinical Immunology, University of California, Davis, USA.
authors.forename: S S
authors.initials: SS
authors.lastname: Teuber
authors.forename: R L
authors.initials: RL
authors.lastname: Saunders
authors.forename: G M
authors.initials: GM
authors.lastname: Halpern
authors.forename: R F
authors.initials: RF
authors.lastname: Brucker
authors.forename: V
authors.initials: V
authors.lastname: Conte
authors.forename: B D
authors.initials: BD
authors.lastname: Goldman
authors.forename: E E
authors.initials: EE
authors.lastname: Winger
authors.forename: W G
authors.initials: WG
authors.lastname: Wood
authors.forename: M E
authors.initials: ME
authors.lastname: Gershwin
mesh_terms: D018427:Breast Implants; D003404:Creatinine / Q000097:blood; D005260:Female; D005782:Gels; D006801:Humans; D007202:Indicators and Reagents; D007700:Kinetics; D008875:Middle Aged; D012825:Silicon / Q000097:blood*; D012828:Silicones; D013054:Spectrophotometry, Atomic
chemical_list: D005782:Gels; D007202:Indicators and Reagents; D012828:Silicones; D003404:Creatinine; D012825:Silicon