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Investigation of the participation of the TRPV1 receptor in the irritant effect of dithranol in mice.
Eur J Pharmacol
January 2025
Graduate Program in Pharmacology, Federal University of Santa Catarina (UFSC), 88037-000 - Florianópolis (SC), Brazil. Electronic address:
Dithranol is one of the most effective topical medications for treating plaque psoriasis. However, its clinical use is limited by irritative adverse reactions to the skin, such as oedema, erythema, and pruritus, caused by poorly understood mechanisms. Because TRPV1 activation mediates skin irritation caused by several drugs, we conducted blind and randomised experiments in male and female C57BL/6 mice to elucidate the role of TRPV1 in dithranol-induced irritation.
View Article and Find Full Text PDFRecurrent Bacteremia in the Setting of Pseudomonas Endocarditis of the Tricuspid Valve and Indwelling Medical Devices.
Cureus
December 2024
Internal Medicine, Cooper University Hospital, Camden, USA.
This case report presents a complex and challenging scenario of recurrent () bacteremia and tricuspid valve endocarditis in a 77-year-old male patient with multiple comorbidities and indwelling medical devices. The patient's medical history was significant for T4 paraplegia, neurogenic bladder requiring a chronic indwelling suprapubic catheter, heart block status post-permanent pacemaker placement, type 2 diabetes mellitus, chronic kidney disease, and chronic sacral wounds. The case highlights the difficulties in managing antibiotic-resistant infections, particularly in patients with implantable devices and chronic wounds.
View Article and Find Full Text PDFUltrastructural Study and Immunohistochemical Characteristics of Mesencephalic Tegmentum in Juvenile Chum Salmon () Brain After Acute Traumatic Injury.
Int J Mol Sci
January 2025
A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 690041 Vladivostok, Russia.
The ultrastructural organization of the nuclei of the tegmental region in juvenile chum salmon () was examined using transmission electron microscopy (TEM). The dorsal tegmental nuclei (DTN), the nucleus of (NFLM), and the nucleus of the oculomotor nerve (NIII) were studied. The ultrastructural examination provided detailed ultrastructural characteristics of neurons forming the tegmental nuclei and showed neuro-glial relationships in them.
View Article and Find Full Text PDFComplex Regional Pain Syndrome: Diagnosis, Pathophysiology, and Treatment Approaches.
Cureus
December 2024
Neurosurgery, Fluminense Federal University, Niterói, BRA.
Complex regional pain syndrome (CRPS) is a chronic pain condition characterized by significant sensory, motor, and autonomic dysfunction, often following trauma or nerve injury. Historically known as causalgia and reflex sympathetic dystrophy, CRPS manifests as severe, disproportionate pain, often accompanied by hyperalgesia, allodynia, trophic changes, and motor impairments. Classified into type I (without nerve injury) and type II (associated with nerve damage), CRPS exhibits a complex pathophysiology involving peripheral and central sensitization, neurogenic inflammation, maladaptive brain plasticity, and potential autoimmune and psychological influences.
View Article and Find Full Text PDFFundamentals of intervertebral disc degeneration and related discogenic pain.
World J Orthop
January 2025
Department of Orthopedics, The Third Medical Center, General Hospital of the Chinese People's Liberation Army, Beijing 100039, China.
Lumbar intervertebral disc degeneration is thought to be the main cause of low back pain, although the mechanisms by which it occurs and leads to pain remain unclear. In healthy adult discs, vessels and nerves are present only in the outer layer of the annulus fibrosus and in the bony endplate. Animal models, and histological and biomechanical studies have shown that annulus tear or endplate injury is the initiating factor for painful disc degeneration.
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