HOJMAN CANO, LIA PAULA

Preferred name
HOJMAN CANO, LIA PAULA
Main Affiliation
Email
lhojman@udd.cl
ORCID
0000-0003-0501-4156
Scopus Author ID
57201579019

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    Lupus eritematoso neonatal, caso clínico
    (2023)
    Catalina Montané
    ;
    HOJMAN CANO, LIA PAULA  
    ;
    Trinidad Hasbún Zegpi
    <jats:p>El lupus eritematoso neonatal (LEN) es una patología autoinmune muy infrecuente, que ocurre en neonatos de madres que presentan auto-anticuerpos para antígenos citoplasmáticos del Síndrome de Sjögren. En la mayoría de los casos, la evolución es benigna hacia la resolución espontánea, pero existe un grupo de pacientes que desarrollan compromiso severo del tejido de conducción miocárdico, por lo que su detección oportuna es fundamental. Objetivo: Describir un caso clínico característico de lupus eritematoso neonatal y destacar la importancia del diagnóstico oportuno en madre y neonato. Caso Clínico: Mujer de 33 años, con antecedente de hipertensión arterial, consulta en dermatología por su neonato de 15 días de vida de sexo masculino, quien presenta aparición reciente de placas redondeadas, eritematosas, de bordes solevantados, no descamativas, compatibles con LEN. Se descartó compromiso de conducción miocárdica. En los exámenes del neonato destacaba neutropenia moderada, elevación leve de transaminasas y anticuerpos antiRo y antiLa positivos. En interrogación dirigida, la madre refiere historia personal de síntomas compatibles con enfermedades del tejido conectivo, tales como fatiga, alopecia y xeroftalmia. Se solicitan anticuerpos antinucleares a la madre, quien presenta título de 1/1280 con patrón moteado, anticuerpos anti Ro y La y anticuerpos anti-DNA doble hebra positivos, y Test de Schirmer compatible con ojo seco, por lo que se diagnostica Lupus Eritematoso Sistémico con Síndrome de Sjögren asociado. Se realiza seguimiento al lactante por 5 meses con remisión de los signos cutáneos y normalización de los exámenes de laboratorio. Conclusiones: Si bien, las manifestaciones cutáneas de LEN son transitorias y benignas en el neonato, estas pueden ir acompañadas de complicaciones de riesgo vital que requieren una búsqueda activa y un manejo oportuno por el equipo médico. Un 25% de las madres de hijos con LEN son asintomáticas, o desconocen su diagnóstico de LES previo al parto, por lo que el diagnóstico oportuno de LEN en un neonato permite diagnosticar a las madres asintomáticas, optimizando su seguimiento y manejo.</jats:p>
    Scopus© Citations 1  4
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    Case Report: Tocilizumab as time-limited induction therapy enabling steroid withdrawal and conventional maintenance in refractory cutaneous polyarteritis nodosa
    (Frontiers Media SA, 2026-05-29)
    Joo Hu, Ka Wei Katty
    ;
    Jaederlund, Fiona
    ;
    Lohse, Fernando
    ;
    Karsulovic, Claudio
    ;
    HOJMAN CANO, LIA PAULA  
    Background Cutaneous polyarteritis nodosa (CPAN) is a chronic, relapsing vasculitis frequently associated with glucocorticoid dependence and the absence of standardized treatment algorithms. Therapeutic decisions are largely empirical and management of refractory disease remains challenging. Case presentation We report a patient with refractory CPAN and persistent steroid dependence despite corticosteroids and conventional immunosuppressive therapies. A deliberately planned, time-limited induction strategy with tocilizumab (TCZ) was implemented to achieve rapid disease control and enable steroid withdrawal, followed by maintenance with mycophenolate mofetil (MMF). Results TCZ led to rapid clinical remission after two infusions, allowing progressive steroid tapering and discontinuation. After six doses, TCZ was stopped and MMF was introduced as maintenance therapy. The patient remains lesion-free at the time of manuscript submission. Conclusion A time-limited IL-6 blockade strategy may allow rapid steroid withdrawal and facilitate transition to conventional maintenance in refractory CPAN. This approach may reduce cumulative exposure to both glucocorticoids and biologic agents.
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      16Scopus© Citations 13
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    Current and Emerging Biomarkers in Dermatomyositis: Clinical Utility and Future Directions
    (MDPI AG, 2026-01-09)
    Fiona Jaederlund
    ;
    Ka Wei Katty Joo Hu
    ;
    Karsulovic, Claudio
    ;
    HOJMAN CANO, LIA PAULA  
    <jats:p>Idiopathic inflammatory myopathies (IIM) comprise a heterogeneous group of autoimmune disorders with variable systemic involvement. Among them, dermatomyositis (DM) is the subtype with the most extensive biomarker characterization due to its defined immunopathology and frequent association with interstitial lung disease (ILD). This narrative review summarizes studies retrieved from PubMed, Scopus, and Web of Science up to March 2025, focusing on non-autoantibody biomarkers in DM. Reported categories include soluble proteins, cytokines, chemokines, muscle-specific microRNAs, and transcriptomic signatures reflecting interferon activation, tissue injury, and fibrotic remodeling. Among the most validated molecules, interferon-stimulated genes, ferritin, KL-6, SP-D, and CXCL10 demonstrate diagnostic and prognostic value, particularly in anti-MDA5-positive DM, where they support early identification of patients at risk for rapidly progressive ILD. However, despite increasing evidence, most biomarkers lack disease specificity, standardized cutoffs, and multicenter validation, while molecular assays remain confined to specialized laboratories. Clinically accessible markers such as ferritin, KL-6, and CXCL10 currently offer the highest translational potential. Nevertheless, the heterogeneity of study designs and analytical methods continues to limit comparability and routine clinical integration. Future research should prioritize the validation of composite biomarker panels through standardized, multicentric studies to enhance diagnostic precision and enable precision medicine approaches in DM and related inflammatory myopathies.</jats:p>
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    Non-Canonical WNT/Wnt5a Pathway Activity in Circulating Monocytes of Untreated Psoriatic Patients: An Exploratory Study of Its Association with Inflammatory Cytokines and Cardiovascular Risk Marker-ADAMTS7
    (2023)
    Claudio Karsulovic
    ;
    Khanty Loyola
    ;
    CABRERA MORAGA, RAUL ALEJANDRO  
    ;
    Claudio Perez
    ;
    Lia Hojman  
    <jats:p>The leading cause of death in psoriasis is cardiovascular disease. The determinants that induce the increase in this risk are not known. The systemic inflammatory process is dependent on lymphocytes and monocytes, as has been proposed. However, adaptation modules such as mTOR have recently been mentioned as having a role. Other factors, such as WNT and its non-canonical WNT5a-inducing pathway, are relevant in inflammation, cell migration, and neoangiogenesis. Thus, we studied circulating monocytes from untreated severe psoriatic patients and characterized inflammatory cytokines, chemokines, mTOR activity, and the cardiovascular risk marker ADAMTS7. Peripheral blood from ten severely psoriatic patients (Psoriasis severity index greater than 10) was extracted and age- and sex-matched with healthy subjects. Surface and intracellular flow cytometry were performed for cytokine, chemokine receptors, and mTOR activity. ADAMTS7 was measured using ELISA. Psoriatic patients had a higher frequency of WNT5a+ cells in monocytes, which also had higher levels of IL-1β, IL-6, CXCR3, CCR2, and phosphorylated S6R protein. We found that M1 monocytes are dominant in the WNT5a+ cell group, and intracellular levels of WNT5a were also augmented. Levels of WNT5a were correlated with ADAMTS7, a blood marker related to the pathogenesis of atheromatosis. WNT5a could be relevant to the cardiovascular risk of psoriatic patients considering its association with higher levels of inflammatory cytokines, chemokine receptors and the pro-atherogenic profile of circulating monocytes.</jats:p>
    Scopus© Citations 2  4
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    Pivotal Role of mTOR in Non-Skin Manifestations of Psoriasis
    (2024)
    Ka Joo
    ;
    Claudio Karsulovic
    ;
    Milisa Sore
    ;
    HOJMAN CANO, LIA PAULA  
    <jats:p>Psoriasis is a chronic inflammatory condition affecting 2% of the Western population. It includes diverse manifestations influenced by genetic predisposition, environmental factors, and immune status. The sustained activation of mTOR is a key element in psoriasis pathogenesis, leading to an uncontrolled proliferation of cytokines. Furthermore, mTOR activation has been linked with the transition from psoriasis to non-skin manifestations such as psoriatic arthritis and cardiovascular events. While therapies targeting pro-inflammatory cytokines have shown efficacy, additional pathways may offer therapeutic potential. The PI3K/Akt/mTOR pathway, known for its role in cell growth, proliferation, and metabolism, has emerged as a potential therapeutic target in psoriasis. This review explores the relevance of mTOR in psoriasis pathophysiology, focusing on its involvement in cutaneous and atheromatous plaque proliferation, psoriatic arthritis, and cardiovascular disease. The activation of mTOR promotes keratinocyte and synovial cell proliferation, contributing to plaque formation and joint inflammation. Moreover, mTOR activation may exacerbate the cardiovascular risk by promoting pro-inflammatory cytokine production and dysregulation lipid and glucose metabolism. The inhibition of mTOR has shown promise in preclinical studies, reducing skin inflammation and plaque proliferation. Furthermore, mTOR inhibition may mitigate cardiovascular risk by modulating cholesterol metabolism and attenuating atherosclerosis progression. Understanding the role of mTOR in psoriasis, psoriatic arthritis, and cardiovascular disease provides insight into the potential treatment avenues and sheds light on the complex interplay of the immune and metabolic pathways in these conditions.</jats:p>
    Scopus© Citations 11  7
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    Scopus© Citations 22  1
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