Articles: function.
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Leber hereditary optic neuropathy (LHON) is mainly the degeneration of retinal ganglion cells (RGCs) associated with high apoptosis and reactive oxygen species (ROS) levels, which is accepted to be caused by the mutations in the subunits of complex I of the mitochondrial electron transport chain. The treatment is still infant while efforts of correcting genes or using antioxidants do not bring good and consistent results. Unaffected carrier carries LHON mutation but shows normal phenotype, suggesting that the disease's pathogenesis is complex, in which secondary factors exist and cooperate with the primary complex I dysfunction. ⋯ We showed that the downregulation of miR548c-3p plays a critical role in modulating cellular dysfunction and the apoptotic program of RGCs in LHON.
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Memory deficits are a common comorbid disorder in patients suffering from neuropathic pain. The mechanisms underlying the comorbidities remain elusive. The hypothesis of this study was that impaired lactate release from dysfunctional astrocytes in dorsal hippocampal CA1 contributed to memory deficits. ⋯ Impaired lactate release from dysfunctional astrocytes, which could be rescued by activation of the locus coeruleus, led to nociception and memory deficits after peripheral nerve injury.
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Dtsch. Med. Wochenschr. · Mar 2024
[Atrial fibrillation in the elderly - the geriatric perspective].
Atrial fibrillation is the most common cardiac arrhythmia in older adults. As a result of the positive data on ablation, the focus has shifted to rhythm control. The method of choice is pulmonary vein isolation. ⋯ Oral anticoagulation remains an essential component of pharmacological therapy for atrial fibrillation. Older adults require an individualised treatment approach, which should be based on current guidelines and complementary tools. The assessment of functionality should be taken into account in therapy and goal planning.