Introduction. Cerebral blood flow has been well studied in patients with panic disorder, but only few studies analyzed the mechanisms underlying the onset of a panic attack. The aim of the present study was to monitor the cerebral hemodynamics modifications during a panic attack. Materials and Methods. 10 panic disorder patients with recent onset, fully drug naïve, were compared to 13 patients ...

BACKGROUND AND PURPOSE Homocystinuria due to cystathionine beta-synthase deficiency and familial hypercholesterolemia are inherited disorders of metabolism that are associated with premature development of cardiovascular disease. This study addresses the possibility that different patterns of carotid wall damage and cerebral blood flow hemodynamics are present in these two metabolic diseases. ...

Han, Jin, Nari Kim, Hyun Joo, and Euiyong Kim. Ketamine blocks Ca2 -activated K channels in rabbit cerebral arterial smooth muscle cells. Am J Physiol Heart Circ Physiol 285: H1347–H1355, 2003; 10.1152/ajpheart.00194. 2003.—Although ketamine and Ca2 -activated K (KCa) channels have been implicated in the contractile activity regulation of cerebral arteries, no studies have addressed the specifi...

BACKGROUND AND PURPOSE Recent evidence suggests a possible role for leukocytes in angiospastic reactions of large cerebral arteries. This study examined the effect of activation of endogenous circulating leukocytes on endothelium-dependent relaxation in the middle cerebral artery in rabbits. METHODS Leukocytes were activated by rapid injection of either 40 micrograms/kg phorbol 12-myristate 1...

Abstract: A chronic, occlusive cerebrovascular illness known as Moya Moya, sometimes “hazy puff of smoke,” involves bilateral stenosis or occlusion the proximal sections anterior cerebral arteries and Middle Cerebral Arteries (MCAs) well terminal portion Internal Carotid (ICAs). The internal carotid artery becomes progressively occluded stenotic in an idiopathic illness. 34 year old woman with ...

To enhance the consistency of the ischemic insult caused by reversible transorbital middle cerebral artery occlusion, we investigated the variability of somatosensory evoked potential amplitudes and regional cerebral blood flow in 26 anesthetized cats using four procedures to induce transient ischemia. These procedures included 60 minutes of left middle cerebral artery occlusion with or without...

Hypertension is associated with aberrant structure and mechanical properties of resistance arteries. We determined the effects of resveratrol, a non-flavonoid polyphenol found in foods such as red grapes, and structurally-similar analogues (pterostilbene and gnetol) on systolic blood pressure (SBP) and resistance arteries from the spontaneously hypertensive heart failure (SHHF) rat. SBP was ele...

Intracellular pH (pHi) in the vascular wall modulates agonist-induced vasocontractile and vasorelaxant responses in mesenteric arteries, whereas effects on myogenic tone have been unsettled. We studied the role of Na(+),HCO3(-) cotransporter NBCn1 in mouse isolated middle cerebral arteries and the influence of pHi disturbances on myogenic tone. Na(+),HCO3(-) cotransport was abolished in arterie...

It is reasonable to speculate that migrainous infarction may develop in different territories of cerebral arteries. However, this condition was rarely reported before. Here we described two patients (one woman, 29 year-old; one man, 47 year-old) with a history of migraine with aura, had ischemic strokes during the migraine attack. The ischemic stroke of the female patient involved the territori...

Ischaemic stroke is responsible for up to 80% of stroke cases. Prevention of the reoccurrence of ischaemic attack or stroke for patients who survived the first symptoms is the major treatment target. Accurate diagnosis of the emboli source for a specific infarction lesion is very important for a better treatment for the patient. However, due to the complex blood flow patterns in the cerebral ar...