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PURPOSE: To investigate possible neuronal dysfunction of the thalamus in patients suffering from typical absence epilepsy, using magnetic resonance spectroscopy (MRS). Special attention was paid to levels of N-acetylaspartate (NAA) and creatine (Cr), and to the NAA/Cr ratio. METHODS: MRS was performed over the right and left thalamus in nine patients suffering from typical absence epilepsy, and in nine sex- and age-matched healthy controls. All patients and controls were examined using a standard MRS-CSI (chemical shift imaging) technique. RESULTS: Statistical analysis of the obtained data demonstrated a significantly lower thalamic NAA/Cr ratio in patients with typical absence epilepsy when compared to the healthy controls. Our MRS data showed symmetrical distribution of NAA/Cr ratio in the right and left thalamus within both the patient group and the group of healthy controls. No significant correlation between the patients' thalamic NAA/Cr values and the duration of the epilepsy or seizure frequency was revealed. CONCLUSIONS: The present MRS data clearly indicate neuronal dysfunction in the thalami of patients with typical absence epilepsy. In agreement with other recent MRS findings in different idiopathic generalized epilepsy syndromes, our results confirm the role of the thalamus as an important structure in the pathogenesis of typical absence epilepsy.  相似文献   
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Objective

Current guidelines recommend that carotid endarterectomy (CEA) be performed as early as possible after the neurologic index event in patients with 50% to 99% carotid artery stenosis. However, recent registry data showed that patients treated ≤48 hours had a significantly increased perioperative risk. Therefore, the aim of this single-center study was to determine the effect of the time interval between the neurologic index event and CEA on the periprocedural complication rate at our institution.

Methods

Prospectively collected data for 401 CEAs performed between 2004 and 2014 for symptomatic carotid stenosis were analyzed. Patients were divided into four groups according to the interval between the last neurologic event and surgery: group I, 0 to 2 days; group II, 3 to 7 days; group III, 8 to 14 days; and group IV, 15 to 180 days. The primary end point was the combined rate of in-hospital stroke or mortality. Data were analyzed by way of χ2 tests and multivariable regression analysis.

Results

The patients (68% men) had a median age of 70 years (interquartile range, 63-76 years). The index events included transient ischemic attack in 43.4%, amaurosis fugax in 25.4%, and an ipsilateral stroke in 31.2%. CEA was performed using the eversion technique in 61.1% of patients, and 50.1% were treated under locoregional anesthesia. The perioperative combined stroke and mortality rate was 2.5% (10 of 401), representing a perioperative mortality rate of 1.0% and stroke rate of 1.5%. Overall, myocardial infarction, cranial nerve injuries, and postoperative bleeding occurred in 0.7%, 2.2%, and 1.7%, respectively. We detected no significant differences for the combined stroke and mortality rate by time interval: 3% in group I, 3% in group II, 2% in group III, and 2% in group IV. Multivariable regression analysis showed no significant effect of the time interval on the primary end point.

Conclusions

The combined mortality and stroke rate was 2.5% and did not differ significantly between the four different time interval groups. CEA was safe in our cohort, even when performed as soon as possible after the index event.  相似文献   
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We describe the casuistry of a homozygous familial hypercholesterolemia female patient with a biallelic missense variant (NM_000527.4:c.1775G>A, p.Gly592Glu) in the LDLR gene, severe hypertriglyceridemia and late manifestation of coronary heart disease not earlier than at the age of 45 years. An atypical phenotype led to a delayed diagnosis.  相似文献   
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Ehlers–Danlos syndrome (EDS) leads to abnormalities in the synthesis of collagen and complications involving arterial vessels. We describe here a mutation in the intron 14 of the COL3A1 gene leading to EDS Type IV (EDS IV) associated with venous manifestations only. The patient, an 18-year-old male, suffered from truncal varicosity of the long saphenous vein on both sides. Conventional stripping surgery of the left saphenous vein revealed an extremely vulnerable ectatic superficial femoral vein. An inserted vein graft occluded, and venous thrombectomy was unsuccessful. A conservative anticoagulant and compression therapy finally succeeded. This is the first report describing EDS IV due to a mutation in intron 14 of the COL3A1 gene leading to venous manifestations without affecting arterial vessels at clinical presentation. Our findings imply that molecular genetic analysis should be considered in patients with unusual clinical presentation and that conservative therapy should be applied until a suspected clinical diagnosis has been secured.  相似文献   
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