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Neutrophilic urticarial dermatosis without systemic disease: case report.
Dermatol Reports
November 2024
Dermatology Department Imam Muhammed Bin Saud University, Riyadh, Saudi Arabia.
Neutrophilic urticarial dermatosis (NUD) is an uncommon and not well understood disease. We report a 24-year-old female with persistent present with pruritic and painful urticarial plaques unresponsive to convential treatment. Histopathologically, it demonstrates a perivascular and interstitial neutrophilic infiltrate with leukocytoclasia without evidence of vasculitis or dermal edema consistent with neutrophilic urticarial dermatosis.
View Article and Find Full Text PDFFlegel's Disease A Very Rare Skin Disease: A Case Report of Mother and Daughter in a Family.
Mymensingh Med J
January 2025
Dr Md Mostaque Mahmud, Associate Professor, Department of Dermatology & Venereology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh; E-mail:
Flegel's disease (FD) or hyperkeratosis lenticularis perstans (HLP) is an extremely exceptional skin disease typified by hyper-keratotic papules usually found on the lower extremities. Only the histopathological study is the confirmatory test for diagnosis this disease. The treatment of Flegel's disease is not yet settled as a standard one.
View Article and Find Full Text PDFiPSC-derived human sensory neurons reveal a subset of TRPV1 antagonists as anti-pruritic compounds.
Sci Rep
December 2024
Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore, 138673, Republic of Singapore.
Signaling interplay between the histamine 1 receptor (H1R) and transient receptor potential cation channel subfamily V member 1 (TRPV1) in mediating histaminergic itch has been well-established in mammalian models, but whether this is conserved in humans remains to be confirmed due to the difficulties in obtaining human sensory neurons (SNs) for experimentation. Additionally, previously reported species-specific differences in TRPV1 function indicate that use of human SNs is vital for drug candidate screening to have a higher chance of identifying clinically effective TRPV1 antagonists. In this study, we built a histamine-dependent itch model using peripheral SNs derived from human induced pluripotent stem cells (hiPSC-SNs), which provides an accessible source of human SNs for pre-clinical drug screening.
View Article and Find Full Text PDFPemphigus Vulgaris in a Sexagenarian Male: A Case Report and Review of Literature.
Cureus
November 2024
Internal Medicine, Larkin Community Hospital Palm Springs Campus, Hialeah, USA.
Pemphigus vulgaris (PV) is a rare autoimmune disorder characterized by mucocutaneous blistering due to autoantibodies targeting desmoglein proteins, leading to acantholysis. This case report presents a 60-year-old Hispanic male patient with a history of hypertension who developed PV, initially presenting with pruritic scalp lesions that progressively spread to the nares, mouth, chest, neck, and inguinal region. Despite initial management with topical treatments, the lesions persisted, prompting hospitalization.
View Article and Find Full Text PDFArousal-promoting effect of the parabrachial nucleus and the underlying mechanisms: Recent advances.
Prog Neuropsychopharmacol Biol Psychiatry
December 2024
Department of rehabilitation Medicine, SuiNing Central Hospital, The Affiliated Hospital of Chongqing Medical University, SuiNing 629000, China. Electronic address:
The parabrachial nucleus (PBN) is responsible for integrating both internal and external sensory information and controlling/regulating a wide range of physiological processes, such as feeding, thermogenesis, nociceptive and pruritic sensations, and respiration. Recently, the PBN has been found to be involved in mediating wakefulness maintenance, sleep-wake transition, exogenous neuromodulation of awakening, and arousal-promoting process triggered by drastic changes in the internal environments, such as hypercapnia, hypoxia, and hypertension. Multiple neural pathways and subpopulations of neurons are responsible for arousal-promoting effects of the PBN.
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