Nonlinear optical microscopy assessment of connective tissue changes in vulvar lichen sclerosus

Arseniy L. Potapov; Marina A. Sirotkina; Varvara V. Dudenkova; Vadim V. Elagin; Sergey S. Kuznetsov; Maria M. Karabut; Anastasia D. Komarova; Irina A. Kuznetsova; Stefka G. Radenska- Lppovok; Natalya D Gladkova

doi:10.1117/12.2610241

3 March 2022 Nonlinear optical microscopy assessment of connective tissue changes in vulvar lichen sclerosus

Arseniy L. Potapov, Marina A. Sirotkina, Varvara V. Dudenkova, Vadim V. Elagin, Sergey S. Kuznetsov, Maria M. Karabut, Anastasia D. Komarova, Irina A. Kuznetsova, Stefka G. Radenska- Lppovok, Natalya D Gladkova

Author Affiliations +

Proceedings Volume 11965, Multiphoton Microscopy in the Biomedical Sciences XXII; 119650I (2022) https://doi.org/10.1117/12.2610241
Event: SPIE BiOS, 2022, San Francisco, California, United States

Conference Poster

Abstract

Lichen sclerosus (LS) is the most common vulvar dermatosis, which is characterized by damage to the connective tissue of the dermis. The affected area in lichen sclerosus is characterized by a sequential change in the main components of the connective tissue - collagen and elastin fibers. The affected area is polymorphic and remains poorly defined from a histological point of view. Among histopathologists, there are no unequivocal opinions on changes in the connective tissue of the dermis in LS. However, an assessment of the degree of dermis damage is important for the timely diagnosis of the condition and adequate treatment. Nonlinear microscopy includes second-harmonic generation (SHG) and twophoton autofluorescence (TPEF). SHG allows to selectively examine the signal from heterotypic collagen fibers of the dermis that contain type 1 collagen. TPEF allows to identify elastic fibers of the connective tissue matrix. It has been demonstrated that nonlinear microscopy allows visualizing the changes in the microstructure of collagen and elastin fibers. Three histological patterns were revealed as a result of the analysis of the nonlinear optical microscopy of the classical VLS. These histological patterns cannot be distinguished using histological stains and indicate a polymorphism of connective tissue changes. Nonlinear microscopy makes it possible to assess the changes in tissue structure, which is important for the histological interpretation of changes in the dermis and to clarify histological classification system in the future.

Conference Presentation

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Arseniy L. Potapov, Marina A. Sirotkina, Varvara V. Dudenkova, Vadim V. Elagin, Sergey S. Kuznetsov, Maria M. Karabut, Anastasia D. Komarova, Irina A. Kuznetsova, Stefka G. Radenska- Lppovok, and Natalya D Gladkova "Nonlinear optical microscopy assessment of connective tissue changes in vulvar lichen sclerosus", Proc. SPIE 11965, Multiphoton Microscopy in the Biomedical Sciences XXII, 119650I (3 March 2022); https://doi.org/10.1117/12.2610241

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