Zmiany potencjału proliferacyjnego fibroblastów pochodzących z polipów nosowych, w hodowlach in vitro, pod wpływem pochodnych wit. D

Relationship between the Severity of Inflammatory Changes in Chronic Sinusitis and the Level of Vitamin D before and after the FESS Procedure

There have been a few reports confirming that vitamin D (VD3) deficiency increases inflammation in the paranasal sinuses. The work brings new information that, despite the presence of inflammation before surgery, patients with higher vitamin D levels had less inflammation, and this has been proven on three levels. We show that vitamin D levels clearly correlate with the severity of the disease in chronic sinusitis. These results have been confirmed in imaging studies (Lund MacKay scale), endoscopy (Lund-Kennedy scale) and in the SNOT 20 questionnaire. 40 patients suffering from chronic sinusitis were divided into two equal groups: group 1: with less severe radiological changes (10 or less points on the Lund-Mackay scale), group 2: with a more advanced form (>10 points). The relationship between VD3 and the severity of the disease (clinical and nasal endoscopy) was assessed. The mean VD3 level in patients in group 2 before surgery was lower (23.01 ng/mL) than in group 1 (28.02 ng/mL) (p < 0.05). They presented a higher degree of advanced changes in all the above scales, i.e., before the SNOT 20 procedure, the mean was: group 1: 30.33, group 2: 31.80 (p < NS); Lund-Kennedy: group 1: 3.21, group 2: 6.30 (p < 0.05). After surgery an increase in VD3 levels was observed in both study groups: in group 1 to the value of 37.98 ng/mL (p < 0.002) and in group 2 to 27.67 ng/mL (p < 0.004). Lower VD3 levels were found in patients with a higher stage of the disease. Reduction of inflammation increases the level of VD3 and reduces subjective and objective symptoms of chronic inflammation.

Chronic rhinosinusitis with polyposis and serum vitamin D levels

The pathogenesis of chronic rhinosinusitis (CRS) is still unknown, but it is accepted that various inflammatory factors are responsible for the different CRS subtypes. Vitamin D3 has been shown to alter inflammatory mediators in some diseases and its deficiency might also be associated with CRS with nasal polyposis (CRSwNP). Herein, we investigated serum vitamin D3 levels in patients with CRSwNP and its association with disease severity. In a cross-sectional study, 166 cases with CRSwNP and 172 healthy subjects were enrolled. Serum vitamin D3 levels were measured and compared in both groups. Furthermore, the relationship between serum vitamin-D3 level and the patient’s allergic status and severity of disease (clinically and based on computed tomographic imaging and nasal endoscopy) among patients with CRSwNP was assessed. Serum vitamin D3 level in the CRSwNP group was significantly lower than in the control group (P < 0.0001). After controlling for possible confounding factors, an increase in vitamin D level showed a protective effect in CRSwNP (OR = 0.69 95% CI:0.62-0.76). A negative correlation was found between serum vitamin-D3 level and the Lund-Mackay score (LMS) (P < 0.0001, R = – 0.66), the Lund-Kennedy score (LKS) (P < 0.0001, R = – 0.71) and the Sino-Nasal Outcome Test-22 (P < 0.001, R = – 0.49). Serum vitamin D level in the CRSwNP group was significantly lower than the control group. Disease severity, based on imaging, endoscopic and clinical criteria, was inversely associated with serum vitamin D levels.

Vitamin D3 Deficiency and its Association with Nasal Polyposis in Patients with Cystic Fibrosis and Patients with Chronic Rhinosinusitis

Background

Currently vitamin D3 (VD3) or cholecalciferol is considered an immunomodulator that may be implicated in nasal polyposis (NP) pathophysiology.

Objectives

This study aimed to investigate if deficiency of VD3 is associated with the presence of NP in patients with cystic fibrosis (CT) and patients with chronic rhinosinusitis (CRS).

Methods

In total, 152 adult participants were included in five phenotypic groups: CT with NP (CTwNP) (n = 27), CT without NP (CTsNP) (n = 31), CRS with NP (CRSwNP) (n = 32), CRS without NP (CRSsNP) (n = 30), and controls (n = 32). The serum levels of 25(OH)-VD3 <20 ng/mL are considered as a deficiency, 21–29 ng/mL as insufficiency, and >30 ng/mL as sufficiency. Endoscopic and imaging staging of the mucosal disease performed with the Lund-Kennedy (LK) and Lund-Mackay (LM) scoring systems, respectively. The genotype of the patients with CT and the nasal microbial colonization of the patients with CT and patients with CRS were also recorded.

Results

The patients with CTwNP had the lowest percentage of sufficiency in VD3 and the highest percentage in insufficiency among all the groups. The LM imaging scores were inversely correlated with the VD3 levels in both arms of the study (CT and CRS). Moreover, the LK endoscopic scores had a similar correlation in the CT groups; however, this was not the case with the CRS groups. The genotype of the patients with CT was not correlated with the VD3 serum levels. The patients with positive microbial colonization (mainly Pseudomonas and Staphylococcus aureus) had significantly lower VD3 serum levels in both the CT and CRS process.

Conclusion

VD3 deficiency seemed to be associated with the presence of nasal polyps in the patients with CRS and in the patients with CT in a similar manner. The lower the level of serum VD3, the more severe the mucosal disease was found in the imaging studies and the more frequent microbial colonization of the patients with CT and the patients with CRS.

The relationship between serum vitamin D and chronic rhinosinusitis: A systematic review

BACKGROUND

An exciting development in upper respiratory tract disease is the pathophysiology of vitamin D (VD3). There now is substantial literature to indicate that VD3 acts as an immunomodulator of adaptive and innate immunity locally within the respiratory epithelium. Chronic rhinosinusitis (CRS) places a relatively large socioeconomic burden on developed nations, yet remains a difficult disease to treat. VD3, therefore, has become an area of clinical interest because it may provide an adjunctive drug therapy option in CRS, thereby potentially improving the quality of life of these patients.

OBJECTIVE

A systematic review of the relationship among serum VD3 levels, CRS phenotype, and disease severity by using outcome assessments.

METHODS

A systematic search was performed by using the PubMed, MEDLINE, and EMBASE databases. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed. Studies that measured serum VD3 levels and correlated the measurements to any subtype of CRS (with or without nasal polyps) were included for qualitative analysis.

RESULTS

Seven articles were included (four prospective and three retrospective studies), with a total of 539 patients. There were significantly lower VD3 levels in the polypoid phenotypes of CRS compared with controls. Low VD3 levels were often associated with an increased degree of inflammation.

CONCLUSION

The available evidence indicated that there is a significant relationship between low VD3 levels and polypoid CRS phenotypes. The association between VD3 levels and disease severity and VD3 potential for drug therapy remains unclear, which warrants further research in the area.