2. Hathout L, El-Saden S. Nitrous oxide-induced B12 deficiency myelopathy: perspectives on the clinical biochemistry of vitamin B12. J Neurol Sci. 2011;301(1-2):1-8. https://doi.org/10.1016/j.jns.2010.10.033 3. Gupta PK, Gupta RK, Garg RK, Rai Y, Roy B, Pandey CM et al. DTI correlates of cognition in conventional MRI of normal-appearing brain in patients with clinical features of subacute combi...

Patients with subacute combined degeneration who smoked had significantly lowered plasma thiocyanate levels than control smokers, but plasma thiocyanate levels in non-smoking patients with neurological disease due to vitamin B(12) deficiency were not significantly different from control values. The results provide no support for the hypothesis that chronic cyanide intoxication is responsible fo...

Patients with subacute combined degeneration who smoked had significantly lowered plasma thiocyanate levels than control smokers, but plasma thiocyanate levels in non-smoking patients with neurological disease due to vitamin B1, deficiency were not significantly different from control values. The results provide no support for the hypothesis that chronic cyanide intoxication is responsible for ...