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Capillaroscopy and Immunological Profile in Systemic Sclerosis.

Sevdalina Nikolova Lambova^1,2, Ekaterina Krasimirova Kurteva^3,4, Sanie Syuleymanova Dzhambazova^1,5

¹Department of Propaedeutics of Internal Diseases, Faculty of Medicine, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria.

Life (Basel, Switzerland)

|April 23, 2022

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This summary is machine-generated.

This study confirms that anti-Scl-70 antibodies in systemic sclerosis (SSc) patients correlate with more severe capillaroscopic changes. Novel findings suggest anti-RNAP III-155 antibodies may appear in SSc patients regardless of microangiopathy severity.

Area of Science:

Rheumatology
Immunology
Dermatology

Background:

Systemic sclerosis (SSc) is characterized by microvascular pathology, but associations with specific autoantibodies are not fully understood.
Capillaroscopy is crucial for assessing microangiopathy in SSc, offering insights into disease pathogenesis.
Understanding these links can refine diagnostic and prognostic approaches for SSc.

Purpose of the Study:

To investigate the correlation between capillaroscopic findings and SSc-related autoantibodies.
To explore the potential role of microangiopathy in SSc pathogenesis.
To identify novel associations between specific autoantibodies and capillaroscopic patterns.

Main Methods:

Pilot study involving 19 patients with a definite diagnosis of SSc.

Keywords:

autoantibodies capillaroscopy systemic sclerosis

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Capillaroscopy was performed to classify microvascular changes (normal, nonspecific, or "scleroderma" pattern: early, active, late).

Serum autoantibodies, including anti-Scl-70 and anti-RNAP III-155, were assessed using indirect immunofluorescence and line immunoblot assay.

Main Results:

"Scleroderma" type capillaroscopic changes were observed in 73.7% of patients.
Anti-Scl-70 positive patients showed significantly lower capillary density and more advanced capillaroscopic changes.
Anti-RNAP III-155 positive patients exhibited higher capillary density, with some showing no or early microangiopathy.

Conclusions:

A confirmed association exists between advanced capillaroscopic changes and anti-Scl-70 antibodies in SSc.
A novel observation indicates anti-RNAP III-155 antibodies can be present in SSc patients with or without early microangiopathy.
Further research is needed to elucidate associations between microvascular changes and other SSc-related autoantibodies.