1.Vitamin D Levels and Steroid Usage are not Associated with Disease Activity in Systemic Lupus Erythematosus Patients
Izzaidah Ibrahim ; Wan Mohd Izani Wan Mohamed ; Kah Keng Wong ; Tuan Salwani Tuan Ismail ; Wan Syamimee Wan Ghazali
Malaysian Journal of Medicine and Health Sciences 2022;18(No.2):20-25
Introduction: Suboptimal vitamin D levels are commonly presented by systemic lupus erythemathosus (SLE) patients.
This is likely due to protection measures from sunshine exposure adopted by SLE patients to reduce the likelihood
of SLE flares onset. In this study, we investigated the vitamin D level among SLE patients and its association with SLE
Disease Activity (SLEDAI) scores and among groups of steroid and non-steroid usage. Methods: We recruited 84 SLE
patients who attended the Rheumatology Clinic of Hospital Universiti Sains Malaysia from June 2018 until October
2018. Their clinico-demographic data were retrieved and serum vitamin D immunoassay was conducted to measure
the vitamin D levels of each patient Vitamin D levels were categorized as normal (≥75nmol/L), insufficient (50-74
nmol/L) or deficient (<50 nmol/L). Comparison between the clinico-demographic parameters with vitamin D levels
were conducted using the Fisher’s exact test (for categorical variables) and unpaired t-test (for continuous variables).
Results: The mean vitamin D level among the subjects was 40.79 ± 20.2 nmol/L. Fifty-eight (69%) patients were
vitamin D deficient, while 20 (23.8%) patients were vitamin D insufficient, and only 6 (7.1%) patients had sufficient
level of vitamin D. Vitamin D status was not significantly associated with SLEDAI score (p=0.185) as well as between
steroids and non-steroids groups (p=0.255). Conclusion: Vitamin D deficiency occurred in majority of our SLE patients. SLE disease activities were not associated with the status of vitamin D or steroid usage.