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Vitamin B12 in metformin-treated diabetic patients: a cross-sectional study in Brazil / Vitamina B12 em pacientes diabéticos usando metformina: um corte transversal no Brasil
Nervo, Monique; Lubini, Adriano; Raimundo, Fabiana Viegas; Faulhaber, Gustavo Adolpho Moreira; Leite, Carine; Fischer, Leonardo Moura; Furlanetto, Tania Weber.
  • Nervo, Monique; Hospital de Clínicas de Porto Alegre. Internal Medicine Service. Porto Alegre. BR
  • Lubini, Adriano; Hospital de Clínicas de Porto Alegre. Internal Medicine Service. Porto Alegre. BR
  • Raimundo, Fabiana Viegas; Universidade Federal do Rio Grande do Sul. Medical Sciences. Postgraduation Program in Medicine. Porto Alegre. BR
  • Faulhaber, Gustavo Adolpho Moreira; Hospital de Clínicas de Porto Alegre. Internal Medicine Service. Porto Alegre. BR
  • Leite, Carine; Hospital de Clínicas de Porto Alegre. Internal Medicine Service. Porto Alegre. BR
  • Fischer, Leonardo Moura; Hospital de Clínicas de Porto Alegre. Internal Medicine Service. Porto Alegre. BR
  • Furlanetto, Tania Weber; Hospital de Clínicas de Porto Alegre. Internal Medicine Service. Porto Alegre. BR
Rev. Assoc. Med. Bras. (1992) ; 57(1): 46-49, jan.-fev. 2011. ilus, tab
Article in English | LILACS | ID: lil-576151
ABSTRACT

OBJECTIVE:

The objective of this study was to evaluate the presence of vitamin B12 deficiency and the factors associated with serum vitamin B12 levels in a sample of metformin-treated Brazilian diabetic patients.

METHOD:

Cross-sectional study.

RESULTS:

144 patients were included. Serum vitamin B12 levels were low (< 125 pmol/L) in 10 patients (6.9 percent) and possibly low (125 - 250 pmol/L) in 53 patients (36.8 percent). Serum vitamin B12 levels were negatively associated with age (B = -3.17; β= -0.171; p = 0.037) and duration of metformin use (B= -33.36; β= -0.161; p = 0.048), and positively associated with the estimated intake of vitamin B12 (B= 67.96; β= 0.249; p = 0.002).

CONCLUSION:

The present findings suggest a high prevalence of vitamin B12 deficiency in metformin-treated diabetic patients. Older patients, patients in long term treatment with metformin and low vitamin B12 intake are probably more prone to this deficiency.
RESUMO

OBJETIVO:

O objetivo deste estudo foi avaliar a prevalência de deficiência de vitamina B12 em pacientes diabéticos brasileiros tratados com metformina e os fatores associados aos níveis séricos de vitamina B12.

MÉTODO:

Corte transversal.

RESULTADOS:

144 pacientes foram incluídos. Os níveis séricos de vitamina B12 foram baixos (< 125 pmol/L) em 10 pacientes (6,9 por cento) e possivelmente baixos (125 - 250pmol/L) em 53 pacientes (36,8 por cento). Os níveis séricos de vitamina B12 foram associados negativamente à idade (B = -3,17; β = -0,171; p = 0,037) e à duração do uso de metformina (B = -33,36; β= -0,161; p = 0,048) e positivamente com a ingestão estimada de vitamina B12 (B = 67,96; β = 0,249; p = 0,002).

CONCLUSÃO:

Estes resultados sugerem alta prevalência de deficiência de vitamina B12 em pacientes diabéticos tratados com metformina. Pacientes mais velhos, em uso de metformina há muito tempo e com ingestão baixa de vitamina B12 estão provavelmente mais predispostos a essa deficiência.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Hypoglycemic Agents / Metformin Type of study: Observational study / Prevalence study / Risk factors Limits: Female / Humans Country/Region as subject: South America / Brazil Language: English Journal: Rev. Assoc. Med. Bras. (1992) Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: Hospital de Clínicas de Porto Alegre/BR / Universidade Federal do Rio Grande do Sul/BR

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Full text: Available Index: LILACS (Americas) Main subject: Hypoglycemic Agents / Metformin Type of study: Observational study / Prevalence study / Risk factors Limits: Female / Humans Country/Region as subject: South America / Brazil Language: English Journal: Rev. Assoc. Med. Bras. (1992) Year: 2011 Type: Article Affiliation country: Brazil Institution/Affiliation country: Hospital de Clínicas de Porto Alegre/BR / Universidade Federal do Rio Grande do Sul/BR