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2010, Cilt 8, Sayı 2, Sayfa(lar) 057-062
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Serum B12 and Folate Levels in Psychiatric Patients Treated with Lithium
Serap Cuhadar, Ayşenur Atay, Mehmet Köseoğlu
Atatürk Eğitim ve Araştırma Hastanesi, II. Biyokimya Laboratuvarı, İzmir
Keywords: Lithium, vitamin B12, cobalamin, folate, folic acid, vitamins

Objective: It is unclear whether there is a relationship between lithium administration and folate and vitamin B12 metab olism.

Materials and Methods: We compared retrospectively serum B12, and serum folate concentrations in patients receiving and not receiving lithium at our hospital's Psychiatric Unit between January and December 2008. Serum folate and B12 concentrations were estimated in 64 affective disorder patients taking lithium prophylactically, 42 of whom had bipolar disorder, and in 64 psychiatric patients not receiving lithium, 46 of whom had unipolar depression.

Results: There were no significant differences in serum B12 or folate between lithium-treated and untreated psychiatric patients. There were 5 (8%) patients with serum folate concentrations below 3 ng/mL and 18 (28%) with serum B12 concentrations below 193 pg/mL in lithium-treated patients. 14 patients (21%) had low levels of B12 in non-lithium treated patients.

Conclusion: Contrary to other findings, there were no statistically differences between the folate and B12 concentrations of each group.


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