The Unknown Role of Periostin in Psoriatic Epidermal Hyperplasia.

Psoriasis is an inflammatory skin disease that affects 1-2% of the general population. The pathomechanism is based on type 1 immunological reactions. Hyperplasia of the epidermis in psoriasis is a result of disrupted epidermal architecture due to increased synthesis and expression of extracellular matrix proteins. In our study, we analyzed the involvement of periostin (POSTN) in the pathogenesis of psoriasis, as one of the extracellular matrix proteins belonging to the fasciclin family. The study group consisted of 70 patients with psoriasis, while the control group comprised 30 healthy individuals. The serum concentrations of POSTN, Il-6, Il-17, Il-22, TNF-α and IFN-γ were measured in all participants. The severity of psoriasis was determined using the PASI (Psoriasis Area and Severity Index) score. The presence of POSTN in biopsy samples of 50 patients was assessed using the direct immunofluorescence method. The results were subjected to statistical analysis. The serum concentrations of POSTN, Il-6, Il-17, Il-22, TNF-α and IFN-γ in the study group are significantly higher than in the control group. Positive correlation has been demonstrated between the PASI score and the investigated cytokines, but not with POSTN. There was no statistically significant correlation between the POSTN level and the cytokines levels. POSTN deposits were localized in the epidermis in 66% of patients with psoriasis. The role of POSTN in the pathogenesis of psoriasis remains unclear. The mechanisms inducing the synthesis and expression of POSTN in psoriatic skin are not yet fully understood. Further research is needed to enhance our understanding of the mechanism underlying epidermal hyperplasia in psoriasis.

Impact of Mental State on the Severity of Psoriasis Symptoms: A Study on Patient's Emotional Well-Being.

BACKGROUND Psoriasis is a chronic systemic skin disease affecting approximately 2% of the global population. In addition to the characteristic inflammatory changes on the skin, patients with psoriasis often experience comorbidities, including depressive symptoms and anxiety. This study aimed to investigate the relationship between the course of psoriasis and the mental state of patients. MATERIAL AND METHODS The study was conducted among 70 patients with psoriasis. An interview was conducted to assess the course of psoriasis. The Beck Depression Inventory (BDI) and Hospital Anxiety and Depression Scale (HADS) were used. CRP concentration as well as VAS, NRS, and PASI scales were measured. The results were subjected to statistical analysis. RESULTS Psoriasis was severe in 50% of the patients. Most (52.8%) of patients had moderate pruritis (VAS) and 58.5% had moderate pain (NRS). Moderate depressive symptoms (BDI) were present in 60% of patients, 18.6% had pathological anxiety (HADS-A), and 18.6% had pathological depression (HADS-D). CRP levels were significantly associated with PASI, VAS, and NRS. CONCLUSIONS The mental state of the patient plays an essential role in the course of psoriasis, and negative emotions affect the severity of skin symptoms. Emotional stress to patients with psoriasis should be limited, which will undoubtedly contribute to overall improvement of health.