Functional neuroimaging of the reciprocal influences between sleep and wakefulness.Jedidi, Zayd ; Rikir, Estelle ; Muto, Vincenzo et alin Pflugers Archiv : European journal of physiology (2011), 463(1), 103-9 The activity patterns adopted by brain neuronal populations differ dramatically between wakefulness and sleep. However, these vigilance states are not independent and they reciprocally interact. Here, we ... [more ▼] The activity patterns adopted by brain neuronal populations differ dramatically between wakefulness and sleep. However, these vigilance states are not independent and they reciprocally interact. Here, we provide evidence that in humans, regional brain activity during wakefulness is influenced by sleep regulation, namely by the interaction between sleep homeostasis and circadian signals. We also show that, by contrast, regional brain activity during sleep is influenced by the experience acquired during the preceding waking period. These data reveal the dynamic interactions by which the succession of vigilance states support normal brain function and human cognition. [less ▲] Detailed reference viewed: 40 (18 ULg) Guillain-Barré syndrome following hepatitis ELoly, Jean-Philippe ; Rikir, Estelle ; Seivert, Maxime et alin World Journal of Gastroenterology (2009), 15(13), 1645-1647 Guillain-Barré syndrome (GBS) is often triggered by a preceding bacterial or viral infection. Occasionally, it has been observed in association with acute hepatitis A, B and C, and three cases have been ... [more ▼] Guillain-Barré syndrome (GBS) is often triggered by a preceding bacterial or viral infection. Occasionally, it has been observed in association with acute hepatitis A, B and C, and three cases have been previously described in India in which GBS was associated with acute hepatitis E. A molecular mimicry mechanism is supposed to be involved in the pathogenesis of GBS triggered by infectious agents, although the nature of the shared epitopes has not been characterized in most instances, including that in the case of hepatotropic viruses. We report a case of GBS following acute hepatitis E in a European individual. The presence of antiganglioside GM2 antibodies in this patient suggested molecular mimicry involving ganglioside GM2 in the pathogenesis of GBS associated with hepatitis E. [less ▲] Detailed reference viewed: 45 (6 ULg) When HIV gets into the brainCuvelier, Marie-Laure ; Leonard, Philippe ; Rikir, Estelle et alin Revue Médicale de Liège (2008), 63(5-6), 338-341 Besides opportunistic infections, direct or indirect HIV-mediated lesions of cerebral vascular or neural cells can also occur during the natural course of HIV infection. The main non-infectious ... [more ▼] Besides opportunistic infections, direct or indirect HIV-mediated lesions of cerebral vascular or neural cells can also occur during the natural course of HIV infection. The main non-infectious complications of HIV are cerebral lymphomas, cerebrovascular disorders, HIV dementia and myelitis. [less ▲] Detailed reference viewed: 42 (8 ULg) HIV-related infections of the brainCuvelier, Marie-Laure ; Leonard, Philippe ; Rikir, Estelle et alin Revue Médicale de Liège (2008), 63(5-6), 342-348 During the natural course of human immunodeficiency virus infection, central nervous system insults are very common. They can consist of infectious complications, consequently to the collapse of the ... [more ▼] During the natural course of human immunodeficiency virus infection, central nervous system insults are very common. They can consist of infectious complications, consequently to the collapse of the patient's immune system. Alternatively, direct or indirect HIV-mediated lesions of cerebral vascular or neural cells can also occur. It is crucial to detect HIV-related infectious complications since their prognosis will depend on early and accurate treatments. The diagnosis is generally made by means of magnetic resonance imaging and lumbar puncture. [less ▲] Detailed reference viewed: 45 (12 ULg) Therapeutic armamentarium in neurology: the birth of a new eraBelachew, Shibeshih ; Magis, Delphine ; Lievens, Isabelle et alin Revue Médicale de Liège (2007), 62(5-6), 432-448 The field of neurology was long infamous for a lack of therapeutic options. How many of you have once thought: "Neurologists don't cure the disease, they admire it". But those days have passed into ... [more ▼] The field of neurology was long infamous for a lack of therapeutic options. How many of you have once thought: "Neurologists don't cure the disease, they admire it". But those days have passed into history, and the field is now vibrant with new treatments and hope even for patients with the worst neurodegenerative diseases. We summarized in the present review the latest major advances in therapeutic principles and practice for some of the most frequent chronic neurological disorders such as headaches, epilepsy, multiple sclerosis, dementias, Parkinson's disease, sleep/wake disturbances and peripheral neuropathies. We cannot cure or prevent, but we can now halt or control symptoms and disease progression to provide physical and psychological relief, and a better quality of life for patients who suffer from these otherwise devastating neurological conditions. [less ▲] Detailed reference viewed: 141 (14 ULg) Comment j'explore... Une valeur élevée de calcitonine?Rikir, Estelle ; Valdes Socin, Hernan Gonzalo ; Vroonen, Laurent et alin Revue Médicale de Liège (2006), 61(3), 195-200 This article describes a case of lung cancer with associated hypercalcitoninemia in a man with a goitre. The case raises the problem of the differential diagnosis between medullary thyroid carcinoma and a ... [more ▼] This article describes a case of lung cancer with associated hypercalcitoninemia in a man with a goitre. The case raises the problem of the differential diagnosis between medullary thyroid carcinoma and a neuroendocrine neoplasm with ectopic calcitonin secretion. The article first reviews the physiology of calcitonin, then outlines the diagnostic tests that are required to investigate hypercalcitoninemia and finally discusses the interpretation of test results. [less ▲] Detailed reference viewed: 93 (6 ULg) |
||