Introduction, 113 Historical Development of Positron Computed Tomography, 114 Labeled Compounds, 117 Tracer Kinetic Models, 117 Some Desirable Features for Modeling and Estimations of Rates of Transport, Metabolism, and Synthesis, 119 Cerebral Blood Flow, 121 Clearance Technique, 121 Continuous Inhalation Technique, 124 Microsphere or Tissue Trapping Model, 126 Cerebral Blood Volume, 127 Transp...

Lipid mediators are a class of signaling molecules that play important roles in various physiological processes, including inflammation, blood pressure regulation, and energy metabolism. Exercise has been shown to affect the production metabolism several types lipid mediators, prostaglandins, leukotrienes, sphingolipids, platelet-activating factors endocannabinoids. Eicosanoids, which include p...

Background: Cholesterol is needed by humans for glucose metabolism and it also plays an important role in human energy metabolism. However, having too much cholesterol can harm the individual himself, which lead to accumulation of fat blood. Objective: The purpose this study was determine relationship between levels anxiety on hypertension working area Klatak Health Center. Methods: research de...

The metabolic dissipation in Murray's minimum energy hypothesis includes only the blood metabolism. The metabolic dissipation of the vascular tree, however, should also include the metabolism of passive and active components of the vessel wall. In this study, we extend the metabolic dissipation to include blood metabolism, as well as passive and active components of the vessel wall. The analysi...

some of the endocrinologic diseases, especially acromegaly, cushing and pheochromocytoma have multiple effects on blood glucose metabolism and regulation in non-diabetic patients. in this retrospective survey, records of patients of tehran medical sciences university hospitals have been reviewd. of 124 acromegals, gtt was performed for 51 patients, being impaired in 18%. to evaluate diabetes, f...

OBJECTIVE: Streptozotocin (STZ) destroys the beta cells of pancreas by generation of reactive oxygen species and vitamin C has documented antioxidant properties. This study was designed to evaluate the preventive effect of supplementation of diet by vitamin C on induction of STZ-diabetes and its effect on carbohydrate and lipid metabolism of diabetic rats. MATERIALS AND METHODS: Fifty male Wis...

paraoxonase-1 (pon1) is a serum hdl-bound enzyme that hydrolyzes a number of aromatic carboxylic acid esters including lipid peroxides, preventing ldl oxidation. systemic lupus erythematosus (sle) patients are at greater risk of oxidative stress, which is associated with abnormal plasma lipid metabolism. in this study, association of pon-55 polymorphism with serum arylesterase (are) activities,...

In order to greatly improve the physical function of martial arts athletes, this topic studies effect high-protein food on athletes. Forty-five athletes in events took 5 g every day, 6 times a week for 4weeks, and left right forearm, calcaneus bone mineral density, venous blood was drawn detect metabolism biochemical indicators related function. The experimental results showed that density male...

In patients with impaired liver function and hepatic encephalopathy (HE), consistent elevations of blood ammonia concentration suggest a crucial role in the pathogenesis of HE. Ammonia and acetate are metabolized in brain both primarily in astrocytes. Here, we used dynamic [(11)C]acetate PET of the brain to measure the contribution of astrocytes to the previously observed reduction of brain oxi...

The purpose of this study was to investigate the rate and extent of hydroquinone (HQ) absorption and first pass metabolism in the lungs of male rats in vivo. [14C]HQ in physiological saline was administered intratracheally via an indwelling endotracheal tube to simulate inhalation exposure to HQ dust. The bioavailability of HQ was determined by blood sampling simultaneously at arterial and veno...