Serum levels of adipokines in patients with idiopathic inflammatory myopathies: a pilot study.

Adipokines are cytokines not only regulating metabolic and endocrine activities, but also modulating inflammatory and immune responses in several clinical settings, including autoimmunity. This study was aimed to evaluate whether serum adipokine levels may be useful as markers of disease activity in patients with idiopathic inflammatory myopathies (IIM). Adiponectin, leptin, chemokine C-C motif ligand-2 (CCL2), interleukin (IL)-6, and tumor necrosis factor (TNF) were measured in the serum of all participants. For each adipokine, we evaluate the area under the ROC curve (AUC) and its correlation with creatine kinase (CK) levels. Thirteen patients with IIM and 13 age- and gender-matched healthy individuals were studied. In patients, the levels of CK (273 ± 321 versus 54 ± 29 U/L; P < 0.0001), leptin (1994 ± 1355 versus 818 ± 738 pg/mL; P = 0.024), and IL-6 (32.4 ± 24.1 versus 13.9 ± 3.5 pg/mL; P = 0.003) were significantly higher than in controls. As a result, CK (AUC = 0.929, 0.833-1.00; P = 0.0002), leptin (AUC = 0.783, 0.588-0.977; P = 0.025), and IL-6 (AUC = 0.846, 0.680-1.00; P = 0.005) significantly discriminated between patients and controls. Neither CCL2 (3256 ± 4585 versus 1118 ± 399 pg/mL; P = 0.319) nor TNF (85.1 ± 83.3 versus 58.2 ± 16.8 pg/mL; P = 0.809) levels were different. Additionally, only serum levels of CCL2 were significantly correlated with CK titers (Spearman´s rho coefficient 0.620, 0.087-0.877; P = 0.023). The levels of CCL2 are in parallel with CK activity in the serum of patients with IIM, suggesting a potential utility as markers of disease activity. Elevated levels of leptin and IL-6 also support a role for adipokines in IIM.

Vasculitis primaria del sistema nervioso central, diagnóstico diferencial de demencia subaguda: Caso clínico / Primary vasculitis of the Central Nervous System: report of one case

Primary central nervous system vaculitis is an uncommon and invalidating disease, which has a fatal course if left untreated. We report a 63 year-old woman presenting with a history of two months of cognitive impairment, dysarthria, gait instability and tremor. After four months of evolution a right hemianopsia and a flaccid paresis of upper right limb appeared. A brain biopsy was performed and the histological findings confirmed the suspicion of primary cerebral vasculitis. The patient was treated with cyclophosphamide and prednisone, observing a partial recovery of cognitive and motor function.

Resonancia Magnética de médula espinal y cerebro en el correlato clínico de la paraparesia espástica progresiva que se asocia al virus humano linfotrópico tipo-I (HTLV-I) / Brain and spinal cord magnetic resonance imaging in spastic paraparesis associated to human T-lymphotropic virus

Background: The spastic paraparesis associated to HTLV-1 causes degenerative pyramidal tract lesions of the spinal cord and affects cortical-nuclear connections in the brain. Aim: To report the findings of magnetic resonance imaging in patients with spastic paraparesis. Material and methods: A magnetic resonance imaging of the brain and spinal cord was performed in 30 patients (24 females), mean age and evolution of 56 and 12 years respectively, with a clinical and virological diagnosis of tropical spastic paraparesis/HTLV-1 associated myelopathy (TSP/HAM). Results: No patient had abnormal signals in the spinal cord parenchyma. However, an atrophy of the dorsal segment was observed in 87 percent of patients. Patients with the highest degree of atrophy showed a higher degree of functional impairment. Eleven patients had spinal cord conus atrophy, associated to neurogenic bladder or impotency. In 80 percent of patients, hyperintense subcortical white matter images in DP, T2 and Flair, mostly bi frontal, were detected. In half of them, small rounded and isolated images were observed. In the other half, eight or more images, generally larger and occasionally confluent, were found. Ten of 12 patients with confluent brain lesions showed different degrees of cognitive impairment. No patient had lesions in the corpus callosus, periventricular white matter, pons, medulla oblongata or cerebellum. Conclusions: Most patients with tropical spastic paraparesis have alterations in brain or spinal cord magnetic resonance imaging. The magnetic resonance lesions are concordant with functional impairment. The characteristics of the imaging in TSP/HAM patients can be helpful in the differential diagnosis of patients with paraparesis.

Neuromielitis óptica: una enfermedad necrotizante del sistema nervioso central / Optic neuromyelitis: a necrotizing disease of the central nervous system

Optic neuromyelitis is characterized by simultaneous or successive necrotizing lesions involving the optic nerves and the spinal cord. We report two females with the disease, aged 30 and 34 years old. In the latter, a neuropathological study was done. Both patients had clinical, neuroradiological and pathological features that differed from those of primary demyelinating syndromes such as multiple sclerosis. These patients illustrate the selectivity of optic nerve and spinal cord lesions. The latter involve mainly pyramidal and Goll tracts while, within the necrotizing lesions of the optic chiasma, the fibers of the unaffected optic nerve are spared. This pattern suggests a selective injury to some population of axons. Blood vessels were not affected in the necrotizing areas and the lesions did not follow a vascular territory, therefore a vascular mechanism causing the disease is unlikely. The clinical and neuropathological features of neuromyelitis optic suggest a selective involvement of some axons