This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research article
Liang Jun
Nanjing Drum Tower Hospital: Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital
Corresponding Author
ORCiD: https://orcid.org/0000-0001-5536-6569
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Objective Cognitive impairment is a common neuropsychiatric manifestation of systemic lupus erythematosus (SLE). However, it is not routinely assessed despite its high morbidity and mortality. The aim of the study was to investigate the utility of a brief neuropsychological battery, the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS), to evaluate cognitive deficits in patients with SLE and to examine the relationship between cognitive and olfactory function.
Methods Fifty-five SLE patients and 50 age- and sex-matched healthy control subjects were administered the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS), a cognitive screening battery that evaluated five index of cognition including immediate memory (IMME), visuospatial/constructional (Vis/Con), language (LANG), attention (ATT), delayed memory (DEME). Olfactory functions were evaluated using olfactory function assessment by computerized testing including the three stages of smell: threshold (THR), identification (ID) and memory (ME) of the different odors. The disease activity and cumulative damage were assessed by the SLE Disease Activity Index 2000 (SLEDAI-2K) and the Systemic Lupus International Collaborating Clinics (SLICC)/American College of Rheumatology(ACR) Damage Index (SDI).
Results Patients with SLE exhibited significant lower total RBANS score, IMME, Vis/Con, ATT and DEME index scores than normal controls (P < 0.01 for all and P = 0.027 for attention). Performances on RBANS immediate memory, language, attention and total scores were correlated with education level of SLE patients. Reduced RBANS index and total scores were associated with several organ involvement and autoantibodies. SLE patients with higher SLEDAI-2K scores or with accumulated damage (SDI≥1) showed decreased RBANS scores than patients with lower SLEDAI-2K scores or without accumulated damage. All the olfactory scores (THR, ID and ME) in patients with SLE were significantly decreased than the control group (all P = 0.001). Patients had higher proportion of anosmia (8.57% vs 0%) and hyposmia (28.58% vs 5.72%) than controls (χ2 = 10.533, P = 0.015). Multivariable regression analysis revealed that olfactory threshold, identification and memory had a positive effect on RBANS index score. Olfactory memory and total score were significantly correlated with the RBANS delayed memory (r = 0.393, P = 0.021) and total scores (r = 0.429, P = 0.011).
Conclusion The results of this study indicate that significantly correlated cognitive and olfactory functions are impaired in SLE patients. The RBANS is a potentially useful instrument for evaluating neuropsychological status in SLE. Physicians are encouraged to perform routine screening in patients with SLE to detect subtle cognitive dysfunction and strategize early treatment options.
Keywords
Systemic lupus erythematosus, Cognition, Olfaction, RBANS, Memory, Impairment
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This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research article
Liang Jun
Nanjing Drum Tower Hospital: Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital
Corresponding Author
ORCiD: https://orcid.org/0000-0001-5536-6569
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 08 Nov, 2021
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Objective Cognitive impairment is a common neuropsychiatric manifestation of systemic lupus erythematosus (SLE). However, it is not routinely assessed despite its high morbidity and mortality. The aim of the study was to investigate the utility of a brief neuropsychological battery, the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS), to evaluate cognitive deficits in patients with SLE and to examine the relationship between cognitive and olfactory function.
Methods Fifty-five SLE patients and 50 age- and sex-matched healthy control subjects were administered the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS), a cognitive screening battery that evaluated five index of cognition including immediate memory (IMME), visuospatial/constructional (Vis/Con), language (LANG), attention (ATT), delayed memory (DEME). Olfactory functions were evaluated using olfactory function assessment by computerized testing including the three stages of smell: threshold (THR), identification (ID) and memory (ME) of the different odors. The disease activity and cumulative damage were assessed by the SLE Disease Activity Index 2000 (SLEDAI-2K) and the Systemic Lupus International Collaborating Clinics (SLICC)/American College of Rheumatology(ACR) Damage Index (SDI).
Results Patients with SLE exhibited significant lower total RBANS score, IMME, Vis/Con, ATT and DEME index scores than normal controls (P < 0.01 for all and P = 0.027 for attention). Performances on RBANS immediate memory, language, attention and total scores were correlated with education level of SLE patients. Reduced RBANS index and total scores were associated with several organ involvement and autoantibodies. SLE patients with higher SLEDAI-2K scores or with accumulated damage (SDI≥1) showed decreased RBANS scores than patients with lower SLEDAI-2K scores or without accumulated damage. All the olfactory scores (THR, ID and ME) in patients with SLE were significantly decreased than the control group (all P = 0.001). Patients had higher proportion of anosmia (8.57% vs 0%) and hyposmia (28.58% vs 5.72%) than controls (χ2 = 10.533, P = 0.015). Multivariable regression analysis revealed that olfactory threshold, identification and memory had a positive effect on RBANS index score. Olfactory memory and total score were significantly correlated with the RBANS delayed memory (r = 0.393, P = 0.021) and total scores (r = 0.429, P = 0.011).
Conclusion The results of this study indicate that significantly correlated cognitive and olfactory functions are impaired in SLE patients. The RBANS is a potentially useful instrument for evaluating neuropsychological status in SLE. Physicians are encouraged to perform routine screening in patients with SLE to detect subtle cognitive dysfunction and strategize early treatment options.
Figure 1
Figure 2
Figure 3
This is a list of supplementary files associated with this preprint. Click to download.
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