A new method of measuring the growth of Lactobacillus leichmannii is reported. Its adoption for the estimation of serum vitamin B(12) levels shortens the incubation period required to five hours at 45 degrees C. The method is compared statistically with a standard method of estimation, requiring incubation at 37 degrees C., by duplicate determinations on 106 hospital patients. The significance ...

The final stages in the total synthesis of vitamin B12 are reported. It was particularly appropriate, I think, and most pleasant for us this morning to see the splendid film provided by our Russian friends, in which the very successful Symposium at Riga was enshrined for posterity. Appropriate in the sense, from my own point of view, that I did report there at Riga, on the progress we had made ...

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%) and possibly low (125 - 250 pmol/L) in 53 pa...

Electrodiagnostic Studies in Neurologically Asymptomatic Patients with Vitamin B12 Deficiency Füsun Mayda DOMAÇ, Geysu KARLIKAYA, Yılmaz ÇETİNKAYA, Mehmet GENCER, Tülin TANRIDAĞ, Önder US Erenköy Mental and Neurological Disease. Training and Research Hospital, İstanbul Acıbadem University, Department of Neurology, İstanbul Haydarpaşa Numune Training and Research Hospital, Department of Neurolog...

Serum Acylcarnitines and Vitamin B12 Deficiency, Mark M. Kushnir, Bori Shushan, William L. Roberts, and Marzia Pasquali ( ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT 84108; 2 MDS SCIEX, Concord, ON, L4K 4V8 Canada; 3 Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT 84132; * author for correspondence: fax 801-584-5207, email kushnm...

Vitamin B12 deficiency and hyperhomocysteinemia are common in tropical developing countries. In prevalence study, among Indian population by Yajnik and colleagues, 67% of men had low vitamin B12 concentration and 58% had hyperhomocysteinemia [1]. Here, we report two patients with vitamin B12 deficiency presented with symptoms of schizophrenia and required very high doses of antipsychotic medica...

To assess the serum folate and vitamin B12 status in healthy Iranian adults, we designed a population-based cross-sectional study of 1200 individuals aged 20-80 years. Finally 984 participants (507 men and 477 women) were assessed. The mean serum folate was 4.61 (SD 2.40) ng/mL and the mean serum vitamin B12 level was 265.6 (SD 170.9) pg/mL. Overall 1.0% were folate deficient and 25.8% had low ...

BACKGROUND Vitamin B12 deficiency is prevalent in many countries of origin of refugees. Using a threshold of 5% above which a prevalence of low Vitamin B12 is indicative of a population health problem, we hypothesised that Vitamin B12 deficiency exceeds this threshold among newly-arrived refugees resettling in Australia, and is higher among women due to their increased risk of food insecurity. ...