Vitamin D deficiency in relation with the systemic and central inflammation during multiple sclerosis

Vitamin D and inflammation in multiple sclerosis

  • Sawsan FEKI Habib bourguiba University Hospital
  • Manel Naifar Habib Bourguiba Hospital, Biochemistry Department
  • Mariem Habib Bourguiba Hospital, Neurology Department
  • Sabrina Habib Bourguiba Hospital, Immunology Department
  • Salma Habib Bourguiba Hospital, Neurology Department
  • Yasmine Habib Bourguiba Hospital, Immunology Department
  • Hend Habib Bourguiba Hospital, Immunology Department
  • Chokri Habib Bourguiba Hospital, Neurology Department
  • Fatma AYADI Habib Bourguiba Hospital, Biochemistry Department
  • Hatem Habib Bourguiba Hospital, Immunology Department

Sažetak


Background: During the last decade, vitamin D (VitD) has become a topic of interest in immune regulation, especially in multiple sclerosis (MS) disease. Amongst the wide range of effects reported for this vitamin on the immune system, a regulatory role on cytokines production has been described. Our aim is to analyze the status of VitD and its correlation with the circulating inflammation and the intrathecal humoral response during MS.

Methods: We analyzed samples of 318 individuals: 108 MS patients and 210 controls. Determination of 25-(OH) VitD3 level in serum was made using electrochemiluminescence method. Circulating inflammatory cytokines (IL-6, IL-8, IL-10, TNF-α, IL12p70 andIL-1β) were investigated using Cytometer Bead Array Technology. The central humoral response was characterized using CSF isofocusing test and IgG Index calculation.

Results: As expected, mean value of VitD was significantly lower in MS group (10.4 ng/ml) than in control group (13.9 ng/ml) (p=0.002), with a severe deficiency in 67% of MS patients. Mean value of VitD was significantly lower in MS female patients. Regarding cytokines, mean value of TNFα was significantly higher in MS patients with oligoclonal bands of IgG in the CSF. IL6 was positively correlated with IgG level in serum of MS patients.

Conclusion: Our results support the association of VitD deficiency with MS, especially in female patients of our region. However, the vitamin level seems to not correlate with inflammatory cytokines nor with disability. Interestingly, TNFα and IL6 levels were correlated with the intrathecal synthesis of IgG and the circulating IgG level, respectively.

Objavljeno
2023/08/13
Rubrika
Original paper