Background: Atopic dermatitis (AD) is a recognized T helper (Th)2, allergic, skin disease. Galectin-9 (gal-9) is a member of galectin family. It alters T-cell balance resulting in Th2 polarization. These Th2 cells yield various cytokines that may influence E selectin expression. Therefore, we hypothesized that gal-9 may have an active role in AD and this role could be mediated through E selectin.
Objective: To assess this hypothesis, immunohistochemical expression of gal-9 and E selectin was investigated in skin lesions, from atopic dermatitis patients, and compared.
Methods: Twenty-two atopic dermatitis patients and ten controls were included in this case-control study. SCORAD score was used to evaluate atopic dermatitis severity. Biopsies from skin lesions of AD patients and matched sites of controls were taken and stained immunohistochemically by gal-9 and E selectin polyclonal antibodies.
Results: Compared to controls, atopic dermatitis patients exhibited a significant increased gal-9 H score, percent of expression, cellular localization (P˂0.001) and intensity (P=0.04) as well as dermal cellular infiltrate (P˂0.001). Also, there were significant elevations in E selectin H score (P=0.002), percent of expression (P=0.001) and cellular localization (P<0.001) as well as dermal inflammatory infiltrates in AD cases than controls. In AD, 20 cases showed co expression of both gal-9 and E selectin in the epidermis with insignificant correlation between their H scores.
Study Limitations: This study only included a small number of studied subjects.
Conclusion: Galectin-9 and E selectin participates independently in atopic dermatitis pathogenesis, that may help in development of new therapeutic agents in atopic dermatitis management program.
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http://dx.doi.org/10.2147/CCID.S229393 | DOI Listing |
Itching tends to worsen at night in patients with itchy skin diseases, such as atopic dermatitis. Unconscious scratching during sleep can exacerbate symptoms, cause sleep disturbances, or reduce quality of life. Therefore, evaluating nocturnal scratching behaviour is important for better patient care.
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January 2025
National Jewish Health, Denver, CO, USA. Electronic address:
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Dermatol Ther (Heidelb)
January 2025
Department of Medical-Surgical Sciences and Biotechnologies, Dermatology Unit "Daniele Innocenzi", "Sapienza" University of Rome, Polo Pontino, 04100, Latina, Italy.
Introduction: Atopic dermatitis (AD) is a chronic inflammatory skin disease characterized by pruritus and a relapsing course, affecting approximately 25% of children and 4-7% of adults. This study evaluated the efficacy, safety, and quality-of-life impact of tralokinumab, a humanized monoclonal antibody targeting interleukin-13 (IL-13), in treating moderate-to-severe AD in a real-world setting, with a focus on different AD phenotypes.
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Br J Hosp Med (Lond)
January 2025
Department of Pediatrics, Taizhou Women and Children's Hospital, Taizhou, Zhejiang, China.
Atopic dermatitis (AD) is a common chronic inflammatory skin disorder globally. Crisaborole, a nonsteroidal topical phosphodiesterase 4 inhibitor (PDE4i), has been utilized in treating AD. Crisaborole regulates the production of inflammatory cytokines, which are usually overactive among AD patients.
View Article and Find Full Text PDFPharmaceutics
January 2025
Department of Dermatology, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain.
Phosphodiesterase-4 (PDE4) is involved in the synthesis of inflammatory cytokines that mediate several chronic inflammatory disorders, including psoriasis and atopic dermatitis. In recent years, the therapeutic armamentarium in dermatology has expanded with the introduction of PDE4 inhibitors, both in oral and topical formulations. PDE4 inhibitors have gained increasing interest due to their remarkable safety record and ease of prescription, as evidenced by the recent influx of literature detailing its off-label uses.
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