Sarcoidosis is a noninfectious, inflammatory multisystem disorder characterized by the idiopathic formation of granulomas. The pathogenesis of sarcoidosis remains only partially understood, although various clinical risk factors and extrinsic triggers have been identified, alongside a maintained Th1-mediated immune response. Clinically, sarcoidosis can present with specific manifestations associated with sarcoidal granulomas observable in histological examinations, as well as nonspecific manifestations. Histology is pivotal for diagnosis. In cases of cutaneous sarcoidosis, systemic involvement must be evaluated. Therapeutic approaches are tailored to the most affected organ. For cutaneous sarcoidosis, treatment options vary based on clinical findings and include local therapies as well as systemic interventions. These encompass corticosteroids and other immunosuppressive or immunomodulatory agents.
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http://dx.doi.org/10.1007/s00105-025-05491-3 | DOI Listing |
Dermatologie (Heidelb)
March 2025
Klinik für Dermatologie und Venerologie, Medizinische Fakultät, Universität zu Köln und Uniklinik Köln, Kerpener Str. 62, 50937, Köln, Deutschland.
Sarcoidosis is a noninfectious, inflammatory multisystem disorder characterized by the idiopathic formation of granulomas. The pathogenesis of sarcoidosis remains only partially understood, although various clinical risk factors and extrinsic triggers have been identified, alongside a maintained Th1-mediated immune response. Clinically, sarcoidosis can present with specific manifestations associated with sarcoidal granulomas observable in histological examinations, as well as nonspecific manifestations.
View Article and Find Full Text PDFZ Rheumatol
February 2025
Sektion für Rheumatologie und Entzündliche Systemerkrankungen in der III. Medizin, Universitätsklinikum Hamburg-Eppendorf (UKE), Martinistr. 52, 20246, Hamburg, Deutschland.
Background: Anti-MDA5 positive dermatomyositis is a rare subtype of idiopathic inflammatory myopathies often accompanied by rapidly progressive interstitial lung disease and severe cutaneous ulcerations. It is associated with a high mortality. The simultaneous occurrence of sarcoidosis with multisystemic involvement of myositis has only been described very rarely in the literature to date.
View Article and Find Full Text PDFDermatopathology (Basel)
January 2025
Department of Dermatology, Warren Alpert Medical School, Brown University, Providence, RI 02903, USA.
Cutaneous silica granulomas are a form of foreign-body granulomatous reactions. They are characterized histopathologically by sarcoidal granulomas in association with silica crystals. Asteroid bodies, a classical histopathological feature of sarcoidosis, have not previously been reported in association with silica granulomas.
View Article and Find Full Text PDFEur Heart J Case Rep
February 2025
Cardiology Department, Hospital de Santa Cruz, Avenida Prof. Dr. Reinaldo dos Santos, 2790-134 Lisbon, Portugal.
Background: Sarcoidosis is a rare inflammatory disease characterized by the presence of myocardial non-caseating granulomas. Heart failure, conduction abnormalities, and/or life-threatening arrhythmias are the main manifestations of cardiac sarcoidosis (CS). Cardiac magnetic resonance plays a major role in the diagnostic suspicion of cardiac involvement in sarcoidosis.
View Article and Find Full Text PDFNat Commun
February 2025
Department of Clinical Genome Analysis, Medical Genome Center (MGC), National Center of Neurology and Psychiatry (NCNP), Kodaira, Tokyo, Japan.
Transposon-like human element 1B (THE1B) originates from ancient retroviral sequences integrated into the primate genome approximately 50 million years ago, now accounting for at least 27,233 copies in the human genome, suggesting their extensive influence on human genomic architecture. Here we report identification of 19 THE1B fusion transcripts through short- and long-read RNA-seq analysis, 15 of which are previously unmapped, showing elevated expression in 16 individuals with sarcoid myopathy (SM), as compared to 400 controls with various other muscle diseases. Analysis of publicly available RNA-seq data indicated a correlation between the reduced expression of eight THE1B fusion transcripts and clinical improvement in individuals with cutaneous sarcoidosis receiving tofacitinib treatment.
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