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PubMed1964

FAT EMBOLISM.

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Adrenocorticotropic Hormone↗
PubMed2006

Upregulated expression of 14-3-3 proteins in astrocytes from human cerebrovascular ischemic lesions.

BACKGROUND AND PURPOSE: Several types of chaperone proteins, such as heat shock proteins, have been reported to be associated with brain ischemia. The purpose of this study was to investigate whether an abnormal expression of 14-3-3 proteins, a novel type of molecular chaperones, occurs in human gray and white matter ischemic lesions. METHODS: We prepared formalin-fixed, paraffin-embedded sections from 33 autopsied brains, consisting of 7 normal controls, 4 cases with cerebral thrombosis, 5 cases with cerebral embolism, 8 cases with multiple lacunar infarctions, and 9 cases with Binswanger disease. Deparaffinized sections from all cases were immunostained with anti-14-3-3 antibodies using the avidin-biotin-peroxidase complex method, and some sections were also double-immunostained for 14-3-3 and glial markers. RESULTS: In the normal control brains, 14-3-3 immunoreactivity was mainly localized to the neuronal somata and processes. Strongly 14-3-3-immunopositive astrocytes were distributed in the infarct lesions and were particularly abundant in infarcts at the chronic stage. Intensely 14-3-3-immunolabeled astrocytes were also observed in the ischemic white matter lesions, and in the severely affected white matter lesions from patients with Binswanger disease, dense 14-3-3 immunoreactivity was found in clasmatodendritic astroglia as well as in reactive astrocytes. CONCLUSIONS: Our results suggest that 14-3-3 proteins may be induced mainly in astrocytes from human cerebrovascular ischemic lesions, and that the upregulated expression of 14-3-3 proteins in astrocytes may be involved in the formation of astrogliosis.

14-3-3 Proteins↗
PubMed2003

Recanalisation of cerebral venous thrombosis.

OBJECTIVE: To investigate recanalisation in the first 12 months after cerebral venous thrombosis. METHODS: 33 consecutive patients presenting with cerebral venous thrombosis were enrolled in the study. Diagnosis was made by magnetic resonance imaging (MRI) and magnetic resonance venography (MRV) or catheter angiography. Patients were initially treated with intravenous heparin. Warfarin was given for at least four months. Cerebral MRI and MRV were done at four months and repeated after 12 months if venous thrombosis persisted. Outcome was evaluated by the Rankin scale at 12 months. RESULTS: Outcome at 12 months was good, with a median modified Rankin scale score of 0 (range 0 to 2); 27 patients (82%) had no residual deficits. No patient suffered recurrent cerebral venous thrombosis, deep vein thrombosis, or pulmonary embolism during follow up. After four months, all deep cerebral veins and cavernous sinuses, 94% of superior sagittal sinuses, 80% of straight sinuses, 73% of jugular veins, 58% of transverse sinuses, and 41% of sigmoid sinuses had recanalised. No further recanalisation was observed thereafter. CONCLUSIONS: The results suggest that recanalisation only occurs within the first four months following cerebral venous thrombosis and not thereafter, irrespective of oral anticoagulation.

Adult↗