The high incidence of patients with chronic itch highlights the importance of fundamental research. Recent advances in the interface of gut microbiota have shed new light into exploring this phenomenon. However, it is unknown whether gut microbiota plays a role in chronic itch in rodents with or without cognitive dysfunction. In this study, the role of gut microbiota in diphenylcyclopropenone (DCP)-evoked chronic itch was investigated in mice and hierarchical cluster analysis of novel object recognition test (ORT) results were used to classify DCP-evoked itch model in mice with or without cognitive dysfunction (CD)-like phenotype and 16S ribosomal RNA (rRNA) gene sequencing was used to compare gut bacterial composition between CD (Susceptible) and Non-CD phenotypes (Unsusceptible) in chronic itch mice. Results showed that the microbiota composition was significantly altered by DCP-evoked chronic itch and chronic itch induced novel object recognition-related CD. However, abnormal gut microbiota composition induced by chronic itch may not be correlated with novel object recognition-related CD.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7892771 | PMC |
http://dx.doi.org/10.3389/fmed.2021.616489 | DOI Listing |
Br J Dermatol
January 2025
Department of Dermatology, Oregon Health & Science University, Portland, Oregon, USA.
Background: Atopic dermatitis (AD) is a chronic inflammatory skin disease, characterized by eczematous skin lesions and pruritus. There is an unmet need for effective first-line systemic therapies with good safety profiles, particularly oral medications. Orismilast is a novel first-in-class oral phosphodiesterase-4 (PDE4) B/D inhibitor under investigation for the treatment of moderate-to-severe AD.
View Article and Find Full Text PDFBr J Dermatol
January 2025
Department of Dermatology, Yale University, New Haven, CT, USA.
Background: Generalised pustular psoriasis (GPP) is a chronic, systemic, neutrophilic inflammatory disease. A previous Delphi panel established areas of consensus on GPP, although patient perspectives were not included, and aspects of treatment goals remain unclear.
Objectives: To identify and achieve consensus on refined, specific treatment goals for GPP treatment via a Delphi panel with patient participation.
J Pediatr Gastroenterol Nutr
January 2025
Department of Pediatrics, Children's Hospital of Colorado, University of Colorado, Aurora, Colorado, USA.
Pediatric cholestatic liver diseases are rare conditions that can result from multiple specific underlying etiologies. Among the most common etiologies of pediatric cholestatic liver diseases are biliary atresia, Alagille syndrome (ALGS), and inherited disorders of bile acid transport. These diseases are characterized by episodic or chronic unremitting cholestasis.
View Article and Find Full Text PDFCurr Biol
January 2025
Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA 94720, USA; Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA. Electronic address:
A camping trip will quickly become unpleasant if a horde of mosquitoes descends while you pitch your tent, or you find yourself in a patch of poison oak. Whether due to an insect bite, a poisonous plant, or a chronic skin disease, everyone has experienced the urgent sensation of itch and the sweet relief of scratching. The itch-scratch cycle is so powerful that just reading about itch or seeing someone scratching elicits a strong desire to scratch.
View Article and Find Full Text PDFJ Am Acad Dermatol
January 2025
Department of Dermatology, University of Maryland School of Medicine, Baltimore, MD; Maryland Itch Center, University of Maryland School of Medicine, Baltimore, MD. Electronic address:
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