PMID- 29887831 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220318 IS - 1664-2392 (Print) IS - 1664-2392 (Electronic) IS - 1664-2392 (Linking) VI - 9 DP - 2018 TI - Metformin Use Is Not Associated With B(12) Deficiency or Neuropathy in Patients With Type 2 Diabetes Mellitus in Qatar. PG - 248 LID - 10.3389/fendo.2018.00248 [doi] LID - 248 AB - BACKGROUND: Metformin may lead to B(12) deficiency and neuropathy. There are no published data on the prevalence of Metformin-related B(12) deficiency and neuropathy in the Arabian Gulf. AIMS: Determine whether Metformin intake is associated with B(12) deficiency and whether B(12) deficiency is associated with diabetic peripheral neuropathy (DPN) and painful diabetic neuropathy. METHODS: Patients with type 2 diabetes mellitus (T2DM) (n = 362) attending outpatient clinics at HMC underwent assessment of B(12) levels, the DN4 questionnaire, and vibration perception threshold (VPT). RESULTS: Comparing Metformin to non-Metformin users there were no differences in B(12) levels, VPT, or DN4. The prevalence of B(12) deficiency (B(12) <133 pmol/l) was lower (P < 0.01) in Metformin (8%) compared to non-Metformin (19%) users. Patients with B(12) deficiency had a comparable prevalence and severity of sensory neuropathy and painful neuropathy to patients without B(12) deficiency. CONCLUSION: Serum B(12) levels were comparable between Metformin and non-Metformin users with T2DM in Qatar. T2DM patients on Metformin had a lower prevalence of B(12) deficiency. Furthermore, the prevalence and severity of neuropathy and painful diabetic neuropathy were comparable between patients with and without B(12) deficiency. FAU - Elhadd, Tarik AU - Elhadd T AD - National Diabetes & Endocrine Centre, Al-Wakra Hospital, Hamad Medical Corporation, Doha, Qatar. AD - National Diabetes & Endocrine Centre, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar. FAU - Ponirakis, Georgios AU - Ponirakis G AD - Weill Cornell Medicine-Qatar, Qatar Foundation, Education City, Doha, Qatar. FAU - Dabbous, Zeinab AU - Dabbous Z AD - National Diabetes & Endocrine Centre, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar. FAU - Siddique, Mashhood AU - Siddique M AD - National Diabetes & Endocrine Centre, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar. FAU - Chinnaiyan, Subitha AU - Chinnaiyan S AD - National Diabetes & Endocrine Centre, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar. FAU - Malik, Rayaz A AU - Malik RA AD - National Diabetes & Endocrine Centre, Hamad General Hospital, Hamad Medical Corporation, Doha, Qatar. AD - Weill Cornell Medicine-Qatar, Qatar Foundation, Education City, Doha, Qatar. LA - eng PT - Journal Article DEP - 20180525 PL - Switzerland TA - Front Endocrinol (Lausanne) JT - Frontiers in endocrinology JID - 101555782 PMC - PMC5980977 OTO - NOTNLM OT - diabetic neuropathy OT - diabetic painful neuropathy OT - metformin OT - type 2 diabetes mellitus OT - vitamin B12 deficiency EDAT- 2018/06/12 06:00 MHDA- 2018/06/12 06:01 PMCR- 2018/01/01 CRDT- 2018/06/12 06:00 PHST- 2018/02/03 00:00 [received] PHST- 2018/05/02 00:00 [accepted] PHST- 2018/06/12 06:00 [entrez] PHST- 2018/06/12 06:00 [pubmed] PHST- 2018/06/12 06:01 [medline] PHST- 2018/01/01 00:00 [pmc-release] AID - 10.3389/fendo.2018.00248 [doi] PST - epublish SO - Front Endocrinol (Lausanne). 2018 May 25;9:248. doi: 10.3389/fendo.2018.00248. eCollection 2018.