To characterize the role of the liver and kidney in the metabolic response to injury and infection, selective catheterization of the hepatic (42 veins) and renal veins (21 veins) was performed in 31 burn patients (mean burn size: 51% TBS), studied 4-129 days postinjury. Blood flow was determined by standard clearance techniques (ICG and PAH), and simultaneous arterial and hepatic and/or renal v...

We studied isolated canine arteries and veins to compare the pharmacological properties of their postjunctional alpha-adrenoceptors. Rings of femoral and splenic arteries and of femoral and saphenous veins were mounted for isometric tension recording in organ chambers filled with Krebs-Ringer bicarbonate solution. The four blood vessels contracted when exposed to methoxamine, norepinephrine, ph...

This issue of Hypertension features an article by Imanishi and colleagues entitled "Aspirin Lowers Blood Pressure in Patients With Renovascular Hypertension." In their study, Imanishi and coworkers compared the effects of intravenously administered aspirin on arterial blood pressure, plasma renin activity in the renal veins and aorta, and plasma levels of prostaglandin E2 in the renal veins and...

The so-called Monro-Kellie doctrine states that with an intact skull, the sum of the volume of the brain plus the cerebrospinal fluid volume plus the intracranial blood volume is constant. Therefore an increase in one should cause a reduction in one or both of the remaining two. The researcher who expressed the doctrine in such a way was indeed Harvey Cushing in 1925, during a lecture in Edinbu...

Monocytes and Basophilic Granulocytes in the Cranial Circulation of Patients With Organic Brain Disorders • In 30 patients with organic brain disorders, blood samples from both ear lobes were examined for their white cell contents. In nine of them, blood from the external and internal jugular veins also was examined. The total white cell, neutrophil, and eosinophil counts did not show any diffe...

The prevalence of diabetes is expected to increase dramatically in coming years; already today it accounts for a major proportion of the health care budget in many countries. Diabetic Retinopathy (DR), a micro vascular complication very often seen in diabetes patients, is the most common cause of visual loss in working age population of developed countries today. Since the possibility of slowin...

Abstract Blood flow in narrow channels such as veins and arteries is the major topic of interest here. The Casson fluid with its shear-thinning attribute serves blood model. Owing to arterial walls, channel configured curved shape. activation energy nonlinear thermal radiation aspects are highlighted. boundaries flexible peristaltic wave travelling along channel. mathematical description proble...

1. Direct observations of the arteries, arterioles, capillaries, veins, and lymphatics in the mesentery of anesthetized cats put into shock by incomplete occlusion of the circulation of the limbs showed that: (a) Marked constriction of the arteries and arterioles, produced by muscular contraction, occurred usually within an hour after incomplete occlusion of the limbs, lasted several hours, and...

The branching pattern of the coronary arteries and veins is asymmetric, i.e., many small vessels branch off of a large trunk such that the two daughter vessels at a bifurcation are of unequal diameters and lengths. One important implication of the geometric vascular asymmetry is the dispersion of blood flow at a bifurcation, which leads to large spatial heterogeneity of myocardial blood flow. T...

Monocytes and Basophilic Granulocytes in the Cranial Circulation of Patients With Organic Brain Disorders • In 30 patients with organic brain disorders, blood samples from both ear lobes were examined for their white cell contents. In nine of them, blood from the external and internal jugular veins also was examined. The total white cell, neutrophil, and eosinophil counts did not show any diffe...