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Where is the nickel from?
Human illness as a result of toxicity of silicone gel breast implants is an evolving and controversial area of medical investigation. The nature of any toxicity has not yet been fully characterized but, at least in part, it appears to be consistent with a hypersensitivity process. The medical community is moving away from early reports of an autoimmune process but has not yet offered a clear explanation for complaints registered by patients who have had the devices placed. There is also significant uncertainty with respect to any responsible agents of toxicity.Silicone breast implants consist of a shell encasing a gel. Both the shell and gel are complex formulations that include carbon and silicone and traces of many other elements. Saline implants are comprised of a saline fluid contained in a silicone shell casing. From an Occupational Medicine perspective, notable among the agents present in both gel and shell are the metals chromium, nickel, aluminum, and platinum. The presence of platinum in the implants occurs as a result of its use as a catalyst in its hexasolvent form (H2PtCl6) in the production of gel and shell
Meta-Analyses of the Relation between Silicone Breast Implants and the Risk of Connective-Tissue DiseasesEsther C. Janowsky, M.D., Ph.D., Lawrence L. Kupper, Ph.D., and Barbara S. Hulka, M.D., M.P.H. [16 March 2000] ABSTRACTBackground The postulated relation between silicone breast implants and the risk of connective-tissue and autoimmune diseases has generated intense medical and legal interest during the past decade. The salience of the issue persists, despite the fact that a great deal of research has been conducted on this subject. To provide a stronger quantitative basis for addressing the postulated relation, we applied several techniques of meta-analysis that combine, compare, and summarize the results of existing relevant studies. Methods We searched data bases and reviewed citations in relevant articles to identify studies that met prestated inclusion criteria. Nine cohort studies, nine case–control studies, and two cross-sectional studies were included in our meta-analyses. We conducted meta-analyses of the results of these studies, both with and without adjustment for confounding factors, and a separate analysis restricted to studies of silicone-gel–filled breast implants. Finally, we estimated the annual number of new cases of connective-tissue disease that could be attributed to breast implants. Results There was no evidence that breast implants were associated with a significant increase in the summary adjusted relative risk of individual connective-tissue diseases (rheumatoid arthritis, 1.04 [95 percent confidence interval, 0.72 to 1.51]; systemic lupus erythematosus, 0.65 [95 percent confidence interval, 0.35 to 1.23]; scleroderma or systemic sclerosis, 1.01 [95 percent confidence interval, 0.59 to 1.73]; and Sjögren's syndrome, 1.42 [95 percent confidence interval, 0.65 to 3.11]); all definite connective-tissue diseases combined (0.80; 95 percent confidence interval, 0.62 to 1.04); or other autoimmune or rheumatic conditions (0.96; 95 percent confidence interval, 0.74 to 1.25). Nor was there evidence of significantly increased risk in the unadjusted analyses or in the analysis restricted to silicone-gel–filled implants.
Quote from: Bored chemist on 01/02/2009 10:33:39Where is the nickel from?the nickel and the silicon can only come from the silicone implants the test results said lymphocyte sensitivity to silicones and marked sensitivity yo nickel the test said (silicone 305 and nickel 470) refrence intervals up to 100=normal,100-200=borderline,over 200=definite sensitivity this test was from cumen these second results are just for silicon has is from frimley hospital silicon serum 20.60(2.0-10.0 umol/L)of contamination.QuoteHuman illness as a result of toxicity of silicone gel breast implants is an evolving and controversial area of medical investigation. The nature of any toxicity has not yet been fully characterized but, at least in part, it appears to be consistent with a hypersensitivity process. The medical community is moving away from early reports of an autoimmune process but has not yet offered a clear explanation for complaints registered by patients who have had the devices placed. There is also significant uncertainty with respect to any responsible agents of toxicity.Silicone breast implants consist of a shell encasing a gel. Both the shell and gel are complex formulations that include carbon and silicone and traces of many other elements. Saline implants are comprised of a saline fluid contained in a silicone shell casing. From an Occupational Medicine perspective, notable among the agents present in both gel and shell are the metals chromium, nickel, aluminum, and platinum. The presence of platinum in the implants occurs as a result of its use as a catalyst in its hexasolvent form (H2PtCl6) in the production of gel and shell newbielink:http://www.info-implants.com/BC/0007.html [nonactive]Juliemr may be referring to antibodies to silicon and nickel in her blood, rather than silicon and nickel themselves.This was the mainstream view in 2000 ...QuoteMeta-Analyses of the Relation between Silicone Breast Implants and the Risk of Connective-Tissue DiseasesEsther C. Janowsky, M.D., Ph.D., Lawrence L. Kupper, Ph.D., and Barbara S. Hulka, M.D., M.P.H. [16 March 2000] ABSTRACTBackground The postulated relation between silicone breast implants and the risk of connective-tissue and autoimmune diseases has generated intense medical and legal interest during the past decade. The salience of the issue persists, despite the fact that a great deal of research has been conducted on this subject. To provide a stronger quantitative basis for addressing the postulated relation, we applied several techniques of meta-analysis that combine, compare, and summarize the results of existing relevant studies. Methods We searched data bases and reviewed citations in relevant articles to identify studies that met prestated inclusion criteria. Nine cohort studies, nine casecontrol studies, and two cross-sectional studies were included in our meta-analyses. We conducted meta-analyses of the results of these studies, both with and without adjustment for confounding factors, and a separate analysis restricted to studies of silicone-gelfilled breast implants. Finally, we estimated the annual number of new cases of connective-tissue disease that could be attributed to breast implants. Results There was no evidence that breast implants were associated with a significant increase in the summary adjusted relative risk of individual connective-tissue diseases (rheumatoid arthritis, 1.04 [95 percent confidence interval, 0.72 to 1.51]; systemic lupus erythematosus, 0.65 [95 percent confidence interval, 0.35 to 1.23]; scleroderma or systemic sclerosis, 1.01 [95 percent confidence interval, 0.59 to 1.73]; and Sjögren's syndrome, 1.42 [95 percent confidence interval, 0.65 to 3.11]); all definite connective-tissue diseases combined (0.80; 95 percent confidence interval, 0.62 to 1.04); or other autoimmune or rheumatic conditions (0.96; 95 percent confidence interval, 0.74 to 1.25). Nor was there evidence of significantly increased risk in the unadjusted analyses or in the analysis restricted to silicone-gelfilled implants. newbielink:http://content.nejm.org/cgi/content/full/342/11/781 [nonactive]
Meta-Analyses of the Relation between Silicone Breast Implants and the Risk of Connective-Tissue DiseasesEsther C. Janowsky, M.D., Ph.D., Lawrence L. Kupper, Ph.D., and Barbara S. Hulka, M.D., M.P.H. [16 March 2000] ABSTRACTBackground The postulated relation between silicone breast implants and the risk of connective-tissue and autoimmune diseases has generated intense medical and legal interest during the past decade. The salience of the issue persists, despite the fact that a great deal of research has been conducted on this subject. To provide a stronger quantitative basis for addressing the postulated relation, we applied several techniques of meta-analysis that combine, compare, and summarize the results of existing relevant studies. Methods We searched data bases and reviewed citations in relevant articles to identify studies that met prestated inclusion criteria. Nine cohort studies, nine casecontrol studies, and two cross-sectional studies were included in our meta-analyses. We conducted meta-analyses of the results of these studies, both with and without adjustment for confounding factors, and a separate analysis restricted to studies of silicone-gelfilled breast implants. Finally, we estimated the annual number of new cases of connective-tissue disease that could be attributed to breast implants. Results There was no evidence that breast implants were associated with a significant increase in the summary adjusted relative risk of individual connective-tissue diseases (rheumatoid arthritis, 1.04 [95 percent confidence interval, 0.72 to 1.51]; systemic lupus erythematosus, 0.65 [95 percent confidence interval, 0.35 to 1.23]; scleroderma or systemic sclerosis, 1.01 [95 percent confidence interval, 0.59 to 1.73]; and Sjögren's syndrome, 1.42 [95 percent confidence interval, 0.65 to 3.11]); all definite connective-tissue diseases combined (0.80; 95 percent confidence interval, 0.62 to 1.04); or other autoimmune or rheumatic conditions (0.96; 95 percent confidence interval, 0.74 to 1.25). Nor was there evidence of significantly increased risk in the unadjusted analyses or in the analysis restricted to silicone-gelfilled implants.
the insurance companies are reluctant to pay to have them either installed or removed