Systemic Inflammation During Recanalization of Cerebral Arterial Occlusion

GROUP "AVC" : Inclusion Criteria: * Adults patient (s) * Ischemic stroke by occlusion of a middle cerebral artery (proximal portion M1) * Initial diagnostic MRI infusion * TM with complete reperfusion (TICI 2b, 2c or 3) * TM performed under local anesthesia +/- anxiolysis, or sedation including propofol * mRS prior to stroke \<2 * Barthel index \<90 * Included in the HIBISCUS cohort * Patient who was informed and did not object to participating in the study OR included through the emergency procedure then collection of his non-objection or that of his trusted person as soon as possible Exclusion Criteria: * NIHSS awareness score\> or = 2 * Haemorrhagic complication before thrombectomy * Pregnant woman * Multiple vascular occlusions * Occlusions of posterior or anterior cerebral territories other than M1 * Protected major * TM performed under general anesthesia * Other vital failure than neurological failure GROUP "CONTROL" : Inclusion Criteria: * Adults patient (s) * mRS \<2 * Barthel index \<90 * Requiring diagnostic arteriography for routine check-up of a cerebrovascular malformation * Patient who was informed and did not object to participating in the study Exclusion Criteria: * NIHSS awareness score\> or = 2 * Pregnant woman * Protected major * Exam performed under general anesthesia