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Role of Vegetarianism, Smoking, and Hydroxocobalamin in Optic Neuritis
Abstract
Only 20 patients with optic neuritis of unknown aetiology could be collected in Bombay over a period of two and a half years. Only six of them were smokers and only three (one a non-smoker) had bilateral centrocaecal scotomata similar to those found in tobacco amblyopia. In 11 untreated patients the serum vitamin B 12 and plasma thiocyanate levels were estimated and found to show no significant differences from those in normal control subjects. Treatment with hydroxocobalamin in the majority of cases and with cyanocobalamin, corticotrophin, or prednisolone in the rest showed equally good results; spontaneous improvement was seen in one case. No significant role could be assigned to smoking (cyanide) or to vegetarianism in the production of optic neuritis in these patients; nor was there any evidence of depletion of total (cyanide-extracted) B 12 or of an increase in the proportion of non-cyanide-extracted B 12 in the serum.
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“Most authors see no significant difference in Vitamin B12 levels in smokers compared with nonsmokers, either in nonpregnant or pregnant individuals (Wadia et al., 1972;Mansoor et al., 1997;Ozerol et al., 2004), although some studies show reduced (Pagan et al., 2001;van Wersch, Janssens & Zandvoort, 2002) or even raised levels of vitamin B 12 in smokers (Tungtrongchitr et al., 2003).”
From Anaemia and cigarette smoking (2008) · cites this paper as Wadia et al., 1972
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Cited by
LEIFERT, J. A. (2008) · International Journal of Laboratory Hematology · doi:10.1111/j.1751-553x.2008.01067.x · Cited by 83
Metadata
- Authors
- Wadia, N. H., Desai, M. M., Quadros, E. V., & Dastur, D. K.
- Venue
- BMJ
- Publisher
- BMJ
- Published
- 1972-07-29
- Volume
- 3
- Issue
- 5821
- Pages
- 264-267
- ISSN
- 0007-1447
- 1468-5833
- Cited by
- 7
- References
- 0
- Language
- en
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- Wadia, N. H., Desai, M. M., Quadros, E. V., & Dastur, D. K. (1972). Role of Vegetarianism, Smoking, and Hydroxocobalamin in Optic Neuritis. BMJ. https://doi.org/10.1136/bmj.3.5821.264
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
