Leukotrichia can be caused by a variety of metabolic and inflammatory diseases. Canine alopecia areata is a rare multifactorial benign non-scarring alopecia. This case report describes a seasonally recurrent leukotrichia associated with alopecia areata in a German shepherd dog. Important differential diagnoses were ruled out and histopathology finally confirmed the diagnosis of alopecia areata. Topical tacrolimus and hydrocortisone aceponate were ineffective. The cause for the seasonal character in this case remained undetermined.
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http://dx.doi.org/10.15654/TPK-160209 | DOI Listing |
Arch Dermatol Res
January 2025
Division of Gastroenterology and Hepatology, 200 1st Street SW, Rochester, MN, 55905, USA.
Background: Celiac disease (CeD) has shown an association with autoimmune disorders including vitiligo and alopecia areata (AA). Ritlecitinib, a JAK3 and TEC kinase family inhibitor, has been approved for treatment of patients with AA and is in late-stage development for vitiligo. Ritlecitinib inhibits cytotoxic T cells, NK cells, and B cells which play a role in the pathogenesis of CeD.
View Article and Find Full Text PDFArch Dermatol Res
January 2025
Department of Dermatology, Venereology, and Sexology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt.
Alopecia areata (AA) is an autoimmune condition marked by hair loss, linked to inflammatory processes involving the interleukin-1 receptor type 1 (IL-1R1) pathway. This study aims to explore the relationship between IL-1R1 gene expression, serum IL-1R1 levels, and hsa-miR-19b-3p in relation to AA severity. Using a case-control design, we assessed 100 AA patients and 100 healthy controls, measuring serum IL-1R1 through enzyme-linked immunosorbent assay (ELISA) and analyzing IL-1R1 gene and hsa-miR-19b-3p expression levels via quantitative real-time PCR (qRT-PCR).
View Article and Find Full Text PDFLasers Med Sci
January 2025
Guangzhou Institute of Dermatology, Guangzhou, China.
Since the introduction of CO fractional laser in dermatology, multiple clinical evidences have shown its effectiveness in treating alopecia areata(AA). However, the extent of efficacy remains under-researched, with a lack of extensive and large-scale comparisons, which is a topic of global discussion. We present a case of a 13-year-old male child with AA.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, China.
Alopecia areata (AA) is a prevalent autoimmune condition that causes sudden hair loss and poses significant psychological challenges to affected individuals. Current treatments, including corticosteroids and Janus kinase inhibitors, fail to provide long-term efficacy due to adverse effects and relapse after cessation. This study introduces a nanoparticle (NP) system that codeliver diphenylcyclopropenone (DPCP) and rapamycin (RAPA) prodrugs to induce immune tolerance and promote hair regeneration.
View Article and Find Full Text PDFJ Dermatol
January 2025
Pfizer, Groton, Connecticut, USA.
Ritlecitinib is an oral Janus kinase 3/tyrosine kinase expressed in hepatocellular carcinoma (JAK3/TEC) family kinase inhibitor approved for the treatment of severe alopecia areata (AA). Benefit-risk profiles of two doses of ritlecitinib (50 mg vs 30 mg once daily) were evaluated by integrating patient preferences and clinical efficacy and safety estimates for ritlecitinib. A discrete-choice experiment (DCE) was utilized to elicit preferences for benefit and safety attributes of systemic AA treatments.
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