October 2020

Caracterización Preclínica de Itacitinib (INCB039110), un Nuevo Inhibidor Selectivo de JAK1, para el Tratamiento de Enfermedades Inflamatorias

European Journal of Pharmacology. 2020 Oct 15;885:173505. doi: 10.1016/j.ejphar.2020.173505

Itacitinib is an orally active JAK inhibitor and effectively delayed disease onset, reduced symptom severity, and accelerated recovery of inflammatory diseases in mouse models. Covington M et al demonstrated itacitinib’s high selectivity for JAK 1, its inhibition on IL-2 induced T cell proliferation and JAK/STAT signalling, its ability to also inhibit of the JAK/STAT pathway in response to IL-6 stimulation, and its effect on rat adjuvant induced arthritis model. The study used recombinant enzym...

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Baricitinib, un Fármaco con Efecto Potencial en la Prevención de la Entrada del SARS-COV-2 en las Células Blanco y en el Control del “Cytokine-Storm” Inducido por COVID-19

Journal of International Immunopharmacology. 2020 Sep;86:106749. doi: 10.1016/j.intimp.2020.106749.

BARI may potentially interrupt the passage of SARS-CoV-2 into the target cells by binding to AAK1 and GAK, which are regulators of the ACE2 receptor regulator identified for its uptake, and could also treat cytokine storm through suppression JAK1/JAK2. Professor Zhang and et al reviewed BARI, as a potential drug to prevent SARS-COV-2 from entering target cells. They also evaluated BARI’s ability to control COVID-19 induced cytokine storm. As a cell surface protein, ACE2 is involved in receptor-m...

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March 2020

La Inhibición JAK Aumenta la Masa Ósea en Condiciones de Estado Estacionário y Mejora la Pérdida Ósea Patológica al Estimular la Función de los Osteoblastos

Sci Transl Med 2020;12(530):pii: eaay4447

JAKi significantly increased osteoblast function but showed no direct effects on osteoclasts.JAK signalling has emerged as an important therapeutic target for inflammatory disease, and the immunomodulation of JAK inhibition is well defined. Less well understood is the influence of this new class of drugs on bone homeostasis. This is important, as cytokine dysregulation triggers bone loss, and periarticular erosions contribute to the pathogenesis of RA. This study investigated the effect of BARI ...

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February 2020

Filgotinib, un Inhibidor JAK1, Modula Biomarcadores Relacionados con la Enfermedad en la Artritis Reumatoide: Resultados de 2 Estudios Aleatorizados, Controlados de Fase 2

Rheumatol Ther. 2020 DOI: 10.1007/s40744-019-00192-5

In this study examining the effect of FIL on a panel of biomarkers, FIL down-modulated several key inflammatory mediators of signalling pathways in RA - independent of MTX background therapy. This confirmed the strong network effects of the JAK1 node in autoimmunity, matrix and cartilage degradation, angiogenesis, and leukocyte adhesion and recruitment. Biomarkers key to RA pathophysiology were measured at baseline, Wk4 and Wk12 in FIL 100 mg, FIL 200 mg or PBO treatment groups from two phase 2b...

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Osteoinmunología en Artritis Reumatoide y Artritis Psoriásica: Efectos Potenciales de Tofacitinib en el Compromiso Óseo

Clin Rheumatol. 2020

Data showing that TOF can inhibit unbalanced osteoclastogenesis in RA suggests that targeting the JAK-STAT pathway can halt bone erosion, as TOF has been shown to reduce articular bone erosion in RA and PsA.The authors in this review summarise current knowledge on the relationship between the immune system and the skeleton before examining the involvement of JAK-STAT signalling in bone homeostasis while discussing the evidence on the benefit of TOF on prevention of bone involvement in RA and PsA...

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