Rapid metabolic failure in spontaneously hypertensive rats after middle cerebral artery ligation

1991 ◽  
Vol 6 (2) ◽  
pp. 57-64 ◽  
Author(s):  
Warren R. Selman ◽  
Ralph C. Crumrine ◽  
C. Cory Rosenstein ◽  
Cathleen Jenkins ◽  
Joseph C. LaManna ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Spontaneously Hypertensive Rats ◽  
Hypertensive Rats ◽  
Artery Ligation ◽  
Spontaneously Hypertensive

scholarly journals L-Arginine Does Not Improve Cortical Perfusion or Histopathological Outcome in Spontaneously Hypertensive Rats Subjected to Distal Middle Cerebral Artery Photothrombotic Occlusion

1996 ◽  
Vol 16 (4) ◽  
pp. 612-622 ◽  
Author(s):  
Ricardo Prado ◽  
Brant D. Watson ◽  
Weizhao Zhao ◽  
Hiroshi Yao ◽  
Raul Busto ◽  
...  
Keyword(s):  
Cerebral Ischemia ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Spontaneously Hypertensive Rats ◽  
Therapeutic Potential ◽  
Focal Cerebral Ischemia ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
Tissue Reactions ◽  
Distal Middle Cerebral Artery

The potential of nitric oxide (NO) to influence positively or negatively the outcome of mechanically induced focal cerebral ischemia is still controversial. Recent evidence suggests that NO of vascular origin, whether synthesized from exogenously administered L-arginine (L-Arg) or from NO donor compounds, is beneficial but that of neuronal origin is not. However, the therapeutic potential of NO to ameliorate stroke induced by arterial thrombosis has not been reported. We assessed the therapeutic effect of L-Arg administration in spontaneously hypertensive rats (SHR) subjected to permanent photothrombotic occlusion of the distal middle cerebral artery (dMCA). The ipsilateral carotid artery was left unligated to enhance L-Arg delivery into the putative penumbral region. Local CBF (LCBF) was assessed at 30 min by the [14C]iodoantipyrine technique (n = 9), while histological infarct volumes and index of peripheral ischemic cell change were determined at 3 days (n = 7). Rats (n = 9) given 300 mg/kg L-Arg at 18 and 3 h before photothrombotic dMCA occlusion and at 5 min afterward displayed no significant differences in LCBF compared with animals (n = 8) injected with water (the carrier vehicle) and similarly irradiated. Infarct volumes were also similar, being 37.0 ± 9.7 mm3 (SD) in the vehicle-treated and 49.1 ± 17.2 mm3 (SD) in the L-Arg-treated groups (both n = 7), as were assessments of ischemic neuronal density in the penumbra. In contrast, L-Arg administered intravenously in a dose of 300 mg/kg to nonischemic SHR (n = 5) increased cortical CBF by ∼75% during a 70-min observation period. We conclude that thrombotic processes superimposed upon cerebral ischemia may facilitate tissue reactions that offset the potentially beneficial effect of L-Arg, and this caveat must be considered when proposing L-Arg for clinical treatment of focal thrombotic stroke.

Effect of TTC-909 in a middle cerebral artery thrombosis model in stroke-prone spontaneously hypertensive rats

2002 ◽  
Vol 449 (1-2) ◽  
pp. 127-133 ◽  
Author(s):  
Yasuko Karasawa ◽  
Takehiko Hitomi ◽  
Hiroko Komiyama ◽  
Yoshihiko Isobe ◽  
Tsunefumi Kobayashi ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Spontaneously Hypertensive Rats ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive ◽  
Thrombosis Model ◽  
Artery Thrombosis

Uric Acid Treatment After Stroke Prevents Long-Term Middle Cerebral Artery Remodelling and Attenuates Brain Damage in Spontaneously Hypertensive Rats

2018 ◽  
Vol 11 (6) ◽  
pp. 1332-1347 ◽  
Author(s):  
Elena Jiménez-Xarrié ◽  
Belén Pérez ◽  
Ana Paula Dantas ◽  
Lídia Puertas-Umbert ◽  
Joan Martí-Fabregas ◽  
...  
Keyword(s):  
Uric Acid ◽  
Middle Cerebral Artery ◽  
Brain Damage ◽  
Cerebral Artery ◽  
Acid Treatment ◽  
Spontaneously Hypertensive Rats ◽  
Hypertensive Rats ◽  
Spontaneously Hypertensive
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