Abstract
Background
There is evidence that deficit schizophrenia (DS) is associated with neuroanatomical changes in structures including those involved in olfaction. Olfactory dysfunction, which includes impaired odor identification, is found in patients with schizophrenia and their family members.
Methods
82 patients with DS and 72 patients with NDS (nondeficit schizophrenia), somatically healthy and without acute psychotic symptoms undertook a smell identification test using the 16-item Sniffin’ Sticks ID test. Demographic and psychometric data were collected.
Results
No differences in the course of the illness, perinatal history and demographic data were found between the DS and NDS groups. No differences in the number of correctly identified odor samples were found. Some differences in the qualitative identification of samples between DS and NDS were found in the groups of female (fewer correct identifications of cinnamon and pineapple smells in DS) and male patients (fewer correct identifications of the smell of rose and more correct identifications of the smell of orange than in NDS).
Conclusions
No overall differences between DS and NDS regarding odors identification have been found. The results seem to indicate some specific deficits in the identification of markers of rose, pineapple, orange and cinnamon.
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Abbreviations
- ALT:
-
alanine transaminase
- AST:
-
aspartate transaminase
- CNS:
-
central nervous system
- DS:
-
deficit schizophrenia
- DSM IV:
-
Diagnostic and Statistical Manual of Mental Disorders, Forth Edition
- DUP:
-
duration of untreated psychosis
- GABA:
-
γ-aminobutyric acid
- ICD10:
-
International Statistical Classification of Diseases and Related Health Problems, Tenth Edition
- MINI:
-
Mini International Neuropsychiatric Interview
- NDS:
-
non deficit schizophrenia
- OPCRIT:
-
Operational Criteria for Psychotic Illness
- PANSS:
-
Positive and Negative Syndrome Scale
- SDS:
-
Schedule for the Deficit Syndrome
- S’S:
-
Sniffin Sticks
- TSH:
-
thyroid-stimulating hormone
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Pełka-Wysiecka, J., Wroński, M., Bieńkowski, P. et al. Odors identification differences in deficit and nondeficit schizophrenia. Pharmacol. Rep 68, 390–395 (2016). https://doi.org/10.1016/j.pharep.2015.11.001
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DOI: https://doi.org/10.1016/j.pharep.2015.11.001