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- W2045543477 abstract "Changes in serum nickel, copper and zinc were evaluated in 45 Norplant users. Two groups were selected for this study. Group I included 15 regularly menstruating females as controls and as short-term users (90 days after Norplant insertion). Group II included 30 Norplant users for one year or more as long-term users. These elements were determined by atomic absorption spectrophotometry. Serum nickel showed no significant change in short-term nor in long-term users when compared to the control group or to each other. Serum copper and zinc revealed a significant increase in short-term users for a short period of time, which returned to normal levels in long-term users. There was disappearance of the cyclic changes in serum copper and zinc concentrations on comparing their levels in ovulatory to non-ovulatory Norplant users. The use of Norplant has no deleterious effects on serum levels of nickel, copper and zinc.Serum nickel, copper, and zinc levels were monitored by atomic absorption spectrophotometry in 15 women in the proliferative and luteal phases of their cycles before beginning Norplant contraception and 3 months later, and in 30 users of Norplant for 1 year or more. Serum nickel did not change significantly in short or longterm Norplant users in comparison with before Norplant self-controls or between groups, ranging from 0.221 to 0.28 mcg.dl. Serum copper rose from 100.07 mcg.dl in new users on Cycle Day 5 to 110.86 in ovulating women and 123.5 in nonovulating women in the control cycle. Copper was 118.7 before Norplant and not significantly different at 120.87 after 3 months. Copper levels were 104.26 in the 1st sample in longterm users, rising to 129.14 and 126.5 in ovulating and non-ovulating longterm users 3 months later. Zinc averaged 121.1 mcg/dl before Norplant on Day 5, falling to 94.86 and 97.38 in ovulating and nonovulating women in the luteal phase. Zinc rose slightly from 118.9 to 125.27 before and after 3 months on Norplant. Zinc fell from 107.9 to 91.86 and 94.61 in ovulating and nonovulating longterm users. The similarities and differences of these results with prior reports of trace element in oral and injectable contraceptive users are discussed." @default.
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- W2045543477 date "1992-06-01" @default.
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- W2045543477 title "Serum nickel, copper and zinc in Norplant(R) users" @default.
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- W2045543477 doi "https://doi.org/10.1016/0010-7824(92)90107-5" @default.
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