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Zeitschrift Fur Gastroenterologie Jun 2024As of now, there exists no established therapy for ELP. Retinoids, which are standard in treating cutaneous LP, do not exhibit positive effects in ELP. While topical...
As of now, there exists no established therapy for ELP. Retinoids, which are standard in treating cutaneous LP, do not exhibit positive effects in ELP. While topical glucocorticosteroids often yield favorable responses in esophageal inflammation, some cases prove recalcitrant or refractory. In such instances, various immunosuppressive therapies have been attempted with variable success.This report details a severe case of ELP that showed resistance to prednisolone, acitretin, alitretinoin, adalimumab, tacrolimus, hydroxychloroquine plus mycophenolate mofetil, and cyclophosphamide. The initiation of the JAK inhibitor tofacitinib induced an impressive clinical, endoscopic, and histological remission. This positive response to a JAK inhibitor is discussed in the context of our evolving understanding of the immune-mediated pathogenesis of this disease.
PubMed: 38917831
DOI: 10.1055/a-2300-0375 -
Journal of the European Academy of... May 2024
PubMed: 38818862
DOI: 10.1111/jdv.20165 -
Dermatology and Therapy May 2024Hidradenitis suppurativa (HS) is a debilitating chronic skin disorder characterized by painful inflammatory nodules, abscesses and sinus tracts involving intertriginous... (Review)
Review
Hidradenitis suppurativa (HS) is a debilitating chronic skin disorder characterized by painful inflammatory nodules, abscesses and sinus tracts involving intertriginous areas and has an adverse impact on patient quality of life. Over the past decade, the therapeutic options of HS have increased significantly to comprise multiple modalities, including topical medication, systemic therapies (mainly antibiotics, retinoids, and biologics), surgical approaches, and lifestyle modifications. Biologics alone or in combination with surgery remain the treatment of choice for moderate to severe disease. However, non-biologic therapies (including retinoids) may be used as monotherapy for mild disease and in combination with biologics and surgical treatment in moderate to severe disease. Retinoids, specifically isotretinoin, acitretin, and alitretinoin, are historically used in the management of HS, supported by anecdotal evidence and with variable treatment response. Although the current American and European guidelines offer different recommendations on the use of retinoids in HS, retinoids remain a valuable ally in HS management. This review provides a comprehensive analysis of the current scientific literature on retinoid therapy (topical and systemic) in HS, highlighting disparities in mechanisms of action, efficacy, and safety to clarify their role in HS treatment.
PubMed: 38700645
DOI: 10.1007/s13555-024-01169-1 -
Pharmaceutics Mar 2024Vesicular hand eczema (VHE), a clinical subtype of hand eczema (HE), showed limited responsiveness to alitretinoin, the only approved systemic treatment for severe...
Vesicular hand eczema (VHE), a clinical subtype of hand eczema (HE), showed limited responsiveness to alitretinoin, the only approved systemic treatment for severe chronic HE. This emphasizes the need for alternative treatment approaches. Therefore, our study aimed to identify drug repurposing opportunities for VHE using transcriptomics and genomics data. We constructed a gene network by combining 52 differentially expressed genes (DEGs) from a VHE transcriptomics study with 3 quantitative trait locus (QTL) genes associated with HE. Through network analysis, clustering, and functional enrichment analyses, we investigated the underlying biological mechanisms of this network. Next, we leveraged drug-gene interactions and retrieved pharmaco-transcriptomics data from the DrugBank database to identify drug repurposing opportunities for (V)HE. We developed a drug ranking system, primarily based on efficacy, safety, and practical and pricing factors, to select the most promising drug repurposing candidates. Our results revealed that the (V)HE network comprised 78 genes that yielded several biological pathways underlying the disease. The drug-gene interaction search together with pharmaco-transcriptomics lookups revealed 123 unique drug repurposing opportunities. Based on our drug ranking system, our study identified the most promising drug repurposing opportunities (e.g., vitamin D analogues, retinoids, and immunomodulating drugs) that might be effective in treating (V)HE.
PubMed: 38675137
DOI: 10.3390/pharmaceutics16040476 -
Journal of Neurophysiology Jun 2024Communication between cells in the nervous system is dependent on both chemical and electrical synapses. Factors that can affect chemical synapses have been well...
Communication between cells in the nervous system is dependent on both chemical and electrical synapses. Factors that can affect chemical synapses have been well studied, but less is known about factors that influence electrical synapses. Retinoic acid, the vitamin A metabolite, is a known regulator of chemical synapses, but few studies have examined its capacity to regulate electrical synapses. In this study, we determine that retinoic acid is capable of rapidly altering the strength of electrical synapses in an isomer- and cell-dependent manner. Furthermore, we provide evidence that this acute effect might be independent of either the retinoid receptors or the activation of a protein kinase. In addition to the rapid modulatory effects of retinoic acid, we provide data to suggest that retinoic acid is also capable of regulating the formation of electrical synapses. Long-term exposure to both all--retinoic acid or 9--retinoic acid reduced the proportion of cell pairs forming electrical synapses, as well as reduced the strength of electrical synapses that did form. In summary, this study provides insights into the role that retinoids might play in both the formation and modulation of electrical synapses in the central nervous system. Retinoids are known modulators of chemical synapses and mediate synaptic plasticity in the nervous system, but little is known of their effects on electrical synapses. Here, we show that retinoids selectively reduce electrical synapses in a cell- and isomer-dependent manner. This modulatory action on existing electrical synapses was rapid and nongenomic in nature. We also showed for the first time that longer retinoid exposures inhibit the formation of electrical synapses.
Topics: Tretinoin; Animals; Electrical Synapses; Lymnaea; Alitretinoin
PubMed: 38568843
DOI: 10.1152/jn.00057.2024 -
Cureus Jan 2024A black male in his 60s diagnosed with classic Kaposi's sarcoma presented with multiple cutaneous nodules and edema of the right foot and lower leg. He was initially...
A black male in his 60s diagnosed with classic Kaposi's sarcoma presented with multiple cutaneous nodules and edema of the right foot and lower leg. He was initially treated with alitretinoin 1% topical treatment. However, 16 months after treatment with the alitretinoin, the skin lesions progressed, and he subsequently underwent a course of radiation therapy to a total dose of 2000 centigrays (cGy) in five fractions to his right foot and lower extremities. Approximately 1.5 years after the radiation therapy was completed, multiple new lesions developed on the right foot and distal lower leg. He then underwent a course of re-irradiation to this area using volumetric modulated arc therapy (VMAT) to a total dose of 3300 cGy in 11 fractions. At a four-week follow-up visit, the skin lesions had completely resolved; however, the patient experienced mild edema and tenderness of the right foot and lower leg. Although long-term outcomes need to be followed, re-irradiation showed positive short-term outcomes for classic Kaposi's sarcoma.
PubMed: 38322087
DOI: 10.7759/cureus.51782 -
Acta Dermatovenerologica Alpina,... Dec 2023Darier disease is a rare autosomal dominant genodermatosis that initially first presents in adolescence with scaly reddish brown keratotic papules and plaques with a...
Darier disease is a rare autosomal dominant genodermatosis that initially first presents in adolescence with scaly reddish brown keratotic papules and plaques with a seborrheic and intertriginous distribution. The absence of specific targeted medications complicates the treatment process, and managing resistant cases can prove challenging due to recurrent exacerbations that may result in serious complications such as secondary bacterial and viral infections. Treatments of choice include antiseptics, topical corticosteroids, and systemic retinoids, mainly acitretin and isotretinoin. We report the case of a female patient with Darier disease that was unsuccessfully treated with acitretin and isotretinoin but showed significant improvement with alitretinoin. Previous reports on the efficacy of alitretinoin in Darier disease are reviewed.
Topics: Adolescent; Humans; Female; Darier Disease; Alitretinoin; Acitretin; Isotretinoin; Dermatologic Agents
PubMed: 38126103
DOI: No ID Found -
The British Journal of Dermatology Feb 2024
Correction to: Efficacy and safety of dupilumab in patients with severe chronic hand eczema with inadequate response or intolerance to alitretinoin: a randomized, double-blind, placebo-controlled phase IIb proof-of-concept study.
PubMed: 38123444
DOI: 10.1093/bjd/ljad482 -
Acta Dermato-venereologica Dec 2023
Topics: Humans; Alitretinoin; Mycosis Fungoides; Skin Neoplasms
PubMed: 38088788
DOI: 10.2340/actadv.v103.18472 -
Annals of Dermatology Nov 2023
PubMed: 38061756
DOI: 10.5021/ad.21.109