No abstract available.
Calcinosis

The carotid stump is a known source of cerebral embolisms. Direct ultrasound sonographic visualization of a thrombus in the common carotid stump after development of a cerebral infarction is rare. We report a case of a 69-year-old man who presented with acute ipsilateral ischemic stroke with occlusion of the left common carotid artery, forming a stump proximal to the carotid bifurcation. Carotid duplex sonography revealed a mobile thrombus in the stump. An ipsilateral microembolic signal was observed by transcranial Doppler imaging.
Aged ; Carotid Artery, Common ; Cerebral Infarction ; Embolism ; Humans ; Intracranial Embolism ; Stroke ; Thromboembolism ; Thrombosis ; Ultrasonography, Doppler

Restless legs syndrome (RLS) is a common neurological condition characterized by uncomfortable and unpleasant sensations experienced primarily in the legs. Several clinical reports have indicated that many patients with RLS also have the same symptoms in their arms. We report contralateral arm and leg restlessness on resting after acute internal capsular infarction, which resulted in sleep-onset insomnia and disappeared after administering a dopamine receptor agonist. These observations could provide clues to the mechanism underlying the pathophysiology of RLS.
Arm ; Dopamine Agonists ; Humans ; Infarction ; Leg ; Psychomotor Agitation ; Restless Legs Syndrome ; Sensation ; Sleep Initiation and Maintenance Disorders

We report a case of delayed rupture of an anterior communicating artery (Acom) pseudoaneurysm following mechanical thrombectomy (MT) of a distal artery occlusion using a stent retriever. An elderly patient with right hemiparesis showed left proximal internal cerebral artery and middle cerebral artery occlusions. During MT, a fragmented thrombus moved to the anterior cerebral artery (ACA). A stent retriever was deployed to the occluded ACA, and the Acom and proximal ACA segment were significantly straightened. Additionally, we attempted a blind exchange mini-pinning (BEMP) technique, but a subarachnoid hemorrhage (SAH) occurred. Bleeding was almost entirely absorbed 9 days after the procedure, but the SAH recurred at 20 days, and computed tomography angiography revealed a new pseudoaneurysm formation in the Acom. We suggest that the proposed mechanism of pseudoaneurysm formation was likely due to the dislocation and avulsion of the Acom perforators when the ipsilateral ACA was pushed and pulled during MT.

Guillain-Barre syndrome (GBS) is an autoimmune polyneuropathy that presents with acute onset and rapid progression of ascending quadriparesis and hyporeflexia, which can be triggered by various conditions. However, GBS following cerebral infarction is very rare. We describe herein a patient with facial diplegia, ophthalmoplegia, and areflexia that occurred during acute cerebral infarction. The symptoms were improved after intravenous immunoglobulin treatment. The details of this case suggest that GBS is triggered by immune dysregulation after acute cerebral infarction.
Cerebral Infarction* ; Guillain-Barre Syndrome* ; Humans ; Immunoglobulins ; Ophthalmoplegia ; Polyneuropathies ; Quadriplegia ; Reflex, Abnormal

Polychlorinated biphenyls (PCBs) are accumulated in our body through food chain and cause a variety of adverse health effects including neurotoxicities such as cognitive deficits and motor dysfunction. In particular, neonates are considered as a high risk group for the neurotoxicity of PCBs exposure. The present study attempted to analyze the structure-activity relationship among PCB congeners and the mechanism of PCBs-induced neurotoxicity. We measured total protein kinase C (PKC) activities, PKC isoforms, reactive oxygen species (ROS), and induction of neurogranin (RC-3) and growth associated protein-43 (GAP-43) mRNA in cerebellar granule cells of neonatal rats with phorbol 12, 13-dibutyrate ([3H]PDBu) binding assay, western blot, ROS assay, and reverse transcription PCR (RT-PCR) analysis respectively following the different structural PCBs exposure. Only non-coplanar PCBs showed a significant increase of total PKC-alpha and betaII activity as measured with [3H]PDBu binding assay. ROS were more increased with non-coplanar PCBs than coplanar PCBs. The mRNA levels of RC-3 and GAP-43 were more induced with non-coplanar PCBs than coplanar PCBs, indicating that these factors may be useful biomarkers for differentiating non-coplanar PCBs from coplanar PCBs. Non-coplanar PCBs may be more potent neurotoxic congeners than coplanar PCBs. This study provides evidences that non-coplanar PCBs, which have been neglected in the risk assessment processes, should be added in the future to improve the quality and accuracy of risk assessment on the neuroendocrinal adverse effects of PCBs exposures.
Animals ; Blotting, Western ; Food Chain ; GAP-43 Protein ; Humans ; Infant, Newborn ; Nerve Growth Factor ; Neurogranin ; Neurons ; Neurotoxicity Syndromes ; Phorbols ; Polychlorinated Biphenyls ; Polymerase Chain Reaction ; Protein Isoforms ; Protein Kinase C ; Rats ; Reactive Oxygen Species ; Reverse Transcription ; Risk Assessment ; RNA, Messenger ; Structure-Activity Relationship ; Biomarkers

Cryptococcosis is a global invasive mycosis associated with significant morbidity and mortality. Fever, headache and vomiting are common clinical presentations of the cryptococcal meningitis. But ischemic stroke and cranial nerve impairment are rare neurologic complications. We report a case of cryptococcal meningoencephalitis presenting as cerebral infarction and multiple cranial nerve palsies.
Cerebral Infarction ; Cranial Nerve Diseases ; Cranial Nerves ; Cryptococcosis ; Fever ; Headache ; Meningitis, Cryptococcal ; Meningoencephalitis ; Stroke ; Vomiting

Hemichorea is caused by various diseases but stroke is the most common cause. The usual lesions of the stroke related hemichorea are the contralateral subthalamus or basal ganglia. Few cases with cortical lesion have been reported. But hemichorea with primary somatosensory cortical lesion has not yet been reported. We report a case with hemichorea after acute infarction of the contralateral primary somatosensory cortex.
Basal Ganglia ; Cerebral Infarction ; Chorea ; Infarction ; Somatosensory Cortex ; Stroke ; Subthalamus

BACKGROUND: The ankle brachial index (ABI) is a useful screening tool for peripheral arterial disease. It has been documented that the cerebral atherosclerosis is more frequent in stroke patients with abnormal ABI than in those with normal ABI. The present study compared the different calculation methods of ABI for coexistent intracranial and extracranial arterial stenosis (IECAS) in ischemic stroke. METHODS: We reviewed the data of patients admitted for acute ischemic stroke or transient ischemic attack. The following four distinct ABIs were calculated: the ratio of the higher (ABI-H), lower (ABI-L), or either of the systolic blood pressures (SBPs) of the posterior tibial (ABI-PT) and dorsalis pedis (ABI-DP) arteries relative to the higher of the brachial SBP. We compared the values of these four ABI measures relative to the presence of any IECAS using receiver operating characteristic (ROC) curve analysis. RESULTS: ABI-H, ABI-L, ABI-PT, and ABI-DP were abnormal (≤ 0.9) in 19 (13.1%), 36 (24.8%), 29 (20%), and 30 (20.7%) of 145 patients, respectively. The area under the ROC curve was significantly larger for ABI-H, ABI-L, and ABI-DP than for ABI-PT for any type of IECAS. The extracranial stenosis was more frequent when any of the four ABIs was abnormal, while intracranial stenosis was not correlated with the four ABIs. The IECAS was more frequent for abnormal ABI-H and ABI-DP than for normal ABIs. CONCLUSIONS: Our studies suggested that ABIs based on a higher SBP of the PT or DP (i.e., ABI-H) are more strongly associated with the presence of IECAS than are those using the SBP of the PT (ABI-PT). Extracranial artery stenosis seems to be more strongly associated with ABI than is intracranial stenosis.
Ankle Brachial Index* ; Ankle* ; Arteries* ; Atherosclerosis ; Constriction, Pathologic* ; Humans ; Intracranial Arteriosclerosis ; Ischemic Attack, Transient ; Mass Screening ; Methods* ; Peripheral Arterial Disease ; ROC Curve ; Stroke*