Abstract:
:In a Latin square design, nine New Zealand white male rabbits (2.8-4.8 kg) each received intravenous indocyanine green (ICG) in doses of 2.5, 12.5, and 25 mg/kg. A period of 4 weeks separated consecutive experiments. A specific high-pressure liquid chromatographic (HPLC) assay and the traditional spectrophotometric (SPEC) method were used to monitor plasma ICG. The analyses demonstrated the ambiguous nature of the SPEC assay, and the HPLC procedure pointed to the presence of an unidentified ICG metabolite. Dose-dependent ICG disposition was evident from the ANOVA of the mean (+/- SD) clearances, namely, 17.09 (7.35), 4.50 (0.82), and 2.27 (0.57) mL X min-1 X kg-1 for the aforementioned doses, respectively. Analysis of variance of the clearances also demonstrated a significant ordering effect suggesting cumulative ICG toxicity. The mean ICG profiles for the three doses accorded with a novel three-compartment model containing two ICG distributional spaces in addition to a compartment (liver) responsible for ICG elimination from the circulation. A saturable uptake process into the eliminating compartment (Vmax = 0.93 mg X kg-1 X min-1; Km = 31.9 mg/L) accounted for the dose-dependent features. Additional studies in four unanesthetized rabbits with chronically catheterized bile ducts revealed no disparity between the SPEC and HPLC analyses of biliary ICG. The mean (+/- SD) ICG recovery in bile following an intravenous dose of about 12.5 mg/kg was 59.8 (16.3)%.
journal_name
Can J Physiol Pharmacoljournal_title
Canadian journal of physiology and pharmacologyauthors
Thiessen JJ,Rappaport PL,Eppel JGdoi
10.1139/y84-180subject
Has Abstractpub_date
1984-09-01 00:00:00pages
1078-85issue
9eissn
0008-4212issn
1205-7541journal_volume
62pub_type
杂志文章abstract::The effects of neomycin sulfate were examined upon the discharge activity and electrical membrane properties of an isolated invertebrate sensory neuron, the crayfish stretch receptor neuron. Neomycin depressed cell discharge activity in a concentration-dependent manner over the concentration range of 0.01-1.0 mM. Sign...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y88-005
更新日期:1988-01-01 00:00:00
abstract::Our objective was to investigate the effects of chronic excess iodine intake on thyroid functions and thyroid oxidative stress state in hypothyroid rats. Sixty rats were divided into euthyroid and hypothyroid (thiocyanate-induced) groups with or without administration of excess iodine (3000 or 6000 μg/L) for 8 weeks. ...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y2012-046
更新日期:2012-05-01 00:00:00
abstract::This Symposium includes 15 presentations and an editorial review dealing with prorenin activation and function. It comes 20 years after prorenin was first reported in various contexts and attracted attention because of its connection with renin--angiotensin, its high concentration relative to renin in the blood, and i...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 社论,评审
doi:10.1139/y91-193
更新日期:1991-09-01 00:00:00
abstract::Isolated rabbit hearts undergo ventricular depolarization when exposed to 0.5 mM K--Krebs during 30 to 45 min. A ventricular tachyarrhythmia develops when these hearts are allowed to repolarize in 1.5 mM K--Krebs. Ventricular fibrillation usually follows. These arrhythmias do not cease spontaneously. Initially, perfus...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y82-226
更新日期:1982-12-01 00:00:00
abstract::Calcineurin was isolated from bovine cerebrum extracts by sequential chromatography on Affi-Gel blue and calmodulin affinity columns. Calcineurin so isolated was approximately 90% pure and was composed of equimolar amounts of subunit A (Mr = 61 000-63 000) and subunit B (Mr = 15 000-17 000) when examined by sodium dod...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y85-165
更新日期:1985-08-01 00:00:00
abstract::The placental transfer of indomethacin was studied in the rabbit at 30 days of gestation and in the sheep between 120 and 135 days of gestation. Plasma concentrations of indomethacin reached a maximum of 13.7 +/- 1.6 and 10.9 +/- 1.5 microgram/mL in the doe and fetuses, respectively, at 1 h following a maternal subcut...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y81-053
更新日期:1981-04-01 00:00:00
abstract::A striking feature of the mammalian respiratory rhythm generator is the abruptness of the transitions between the inspiratory (I) and expiratory (E) phases ("phase-switching"). Although reciprocal inhibitory actions between I and E neurons are important for maintaining the alternation of respiratory phases, phase-swit...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y81-103
更新日期:1981-07-01 00:00:00
abstract::A method for the determination of the specific activity of plasma glycerol is described. Anionic contaminants are first removed from deproteinzed plasma by anionic exchange resins (treated plasma). Glycerol in treated plasma is then quantitatively converted to glycerol-3-phosphate (G3P), which is isolated by column ch...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y82-119
更新日期:1982-06-01 00:00:00
abstract::Type 1 diabetes mellitus reduces lipoprotein lipase (LPL) activity in the heart. The diabetic phenotype of decreased LPL activity in freshly isolated cardiomyocytes persisted after overnight culture (16 h). Total cellular LPL activity was 311+/-56 nmol oleate released x h(-1) x mg(-1) cell protein in diabetic cultured...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:
更新日期:1999-08-01 00:00:00
abstract::Acetylcholine (ACh)-mediated vagal transmission as well as nonneuronal ACh release are considered cardioprotective in pathological situations with increased sympathetic drive such as ischemia-reperfusion and cardiac remodeling. ACh action is terminated by hydrolysis by the cholinesterases (ChEs), acetylcholinesterase,...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/cjpp-2019-0565
更新日期:2020-07-01 00:00:00
abstract::Torbafylline, a novel xanthine derivative, was given to rats by gavage (2 x 25 mg.kg-1.day-1, morning and evening) to study its effect upon fast muscles (tibialis anterior and extensor digitorum longus) made ischemic by unilateral ligation of the common iliac artery and subjected to two types of activity imposed by ch...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y94-115
更新日期:1994-07-01 00:00:00
abstract::We tested the hypothesis that ethanol consumption would aggravate the renal damage induced by cyclophosphamide (CYP). Male C57BL/6J mice from control (n=8) and CYP (n=12) groups had free access to filtered water and standard rodent chow for 12 weeks. Then, 24 h before euthanasia mice received an intraperitoneal inject...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/cjpp-2020-0246
更新日期:2020-11-11 00:00:00
abstract::A possible implication of endogenously released ATP and (or) ADP in insulin response to glucose stimulation was investigated in the isolated rat pancreas. The first phase of insulin response to the same glucose concentration (8.3 mM) was much higher in pancreas previously perfused in the absence of glucose than in pan...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y93-086
更新日期:1993-08-01 00:00:00
abstract::The turnover rate of glucose, the irreversible disposal rate of lactate, and the rate of gluconeogenesis from lactate were calculated by tracer methods in four normal and four alloxan-diabetic dogs under control conditions as well as in chronic, stable metabolic acidosis and alkalosis. Acidosis was produced by feeding...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y88-025
更新日期:1988-02-01 00:00:00
abstract::Liver diseases are associated with a decrease in hepatic drug elimination, but there is evidence that cirrhosis does not result in uniform changes of cytochrome P450 (CYP) isoenzymes. The objective of this study was to determine the content and activity of four CYP isoenzymes in the bile duct ligation and carbon tetra...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:
更新日期:2000-11-01 00:00:00
abstract::As an activator of AMPK, the effect of AICAR on insulin signaling has not been investigated extensively. PI3K-Akt is a critical node involved in the insulin signaling pathway. We observed that concomitant with the activation of AMPK by AICAR, the protein level of PI3K p85α and the insulin-induced phosphorylation of Ak...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/cjpp-2015-0159
更新日期:2016-02-01 00:00:00
abstract::Experiments were carried out in pigs to investigate the relationship between concentration of intestinal calcium-binding protein (CaBP) and the presence of rickets. Pigs made rachitic by a diet deficient in calcium and in vitamin D had concentrations of intestinal CaBP no less than values obtained on control pigs. The...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y75-020
更新日期:1975-02-01 00:00:00
abstract::Metformin, the first medication that is often prescribed for the treatment of Type-2 Diabetes Mellitus (T2DM), was recently found to be neuroprotective. To study the mechanism underlying the neuroprotective effect of metformin, we pre-treated primary spinal cord neurons with 50 µM or 100 µM µM metformin for 2 hours pr...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/cjpp-2020-0373
更新日期:2020-11-17 00:00:00
abstract::The role of sodium and calcium on strophanthidin inotropy was studied in canine cardiac Purkinje fibers perfused in vitro under conditions that vary cellular sodium and calcium. With high concentrations of strophanthidin (greater than or equal to 10(-7) M), force increases more in the presence of low [Ca]0 or high [Na...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y86-235
更新日期:1986-11-01 00:00:00
abstract::We investigated potential sex differences in bone resorption and the conservation of whole body bone mass in 24-week-old Sprague-Dawley rats maintained on a 1.0% calcium diet and then fed diets containing 0.02, 0.5, 1.0, or 1.75% calcium for 31 days. Lowering dietary calcium from 1.00% to 0.02% doubled whole skeleton ...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:
更新日期:2001-05-01 00:00:00
abstract::Pathogenic mechanisms for essential hypertension are unclear despite striking efforts from numerous research teams over several decades. Increased production of reactive oxygen species (ROS) has been associated with the development of hypertension and the role of ROS in hypertension has been well documented in recent ...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章,评审
doi:10.1139/y06-077
更新日期:2006-12-01 00:00:00
abstract::Several laboratories have reported ligand binding studies using radioactive histamine H1 antagonists to label the H1 receptors in mammalian brain. We have extended these studies to a detailed examination of the binding of [3H]mepyramine to monkey brain and have shown that the distribution is similar to that in man, wi...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y85-125
更新日期:1985-06-01 00:00:00
abstract::The neural connections from the medial prefrontal cortex to the ventral pallidum were investigated in urethane-anesthetized rats. Extracellular recordings were made from 124 spontaneously firing neurons in the ventral pallidum while the medial prefrontal cortex was electrically stimulated. The most frequent response t...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y93-053
更新日期:1993-05-01 00:00:00
abstract::Myopenia or muscle wasting due to ageing, chronic disease, and various medical interventions has been associated with increased mortality, morbidity, and poorer physical function. Attempts through nutrient and exercise interventions have been made to prevent this deterioration. In addition, while a measure of lean bod...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章,评审
doi:10.1139/cjpp-2012-0304
更新日期:2013-06-01 00:00:00
abstract::This study developed an animal model of gestational obesity and prediabetes in Sprague Dawley rats using 35% sucrose supplementation (SS). Postprandially, insulin stimulates glucose uptake and nutrient partitioning via insulin-dependent as well as Hepatic Insulin Sensitizing Substance (HISS)-dependent action. HISS is ...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/cjpp-2020-0340
更新日期:2020-10-16 00:00:00
abstract::When isolated rat adipocytes were incubated with increasing concentrations of levamisole (0.5-5 mM), basal glucose oxidation decreased by almost 50% and insulin-stimulated glucose oxidation decreased by 90%. The decrease in glucose oxidation correlated with an inhibition of glucose transport, since levamisole at 5.0 m...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y92-165
更新日期:1992-08-01 00:00:00
abstract::Structural analysis of G-protein-coupled receptors has largely been limited to photoaffinity labeling and site-directed mutagenesis. This is primarily due to the difficulty in the production of antibodies against this class of receptors. We were therefore interested in tagging the amino-terminal side of the human angi...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:
更新日期:1997-06-01 00:00:00
abstract::Previous studies have demonstrated that abdominal irradiation alters intestinal uptake of nutrients. The purpose of this study was to determine the effect of an orally administered synthetic prostaglandin E2, enprostil, given on three occasions shortly prior to a single exposure to 600 cGy external abdominal irradiati...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y89-215
更新日期:1989-10-01 00:00:00
abstract::The combined and separate effects of exercise training and bisphosphonate (etidronate) therapy on bone mineral in postmenopausal women were compared. Forty-eight postmenopausal women were randomly assigned (double blind) to groups that took intermittent cyclical etidronate; performed strength training (3 d/week) and r...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1139/y02-126
更新日期:2002-10-01 00:00:00
abstract::Apoptotic pathways in breast cancer cells are frequently altered, reducing the efficiency of radiotherapy. Conjugated linoleic acid (CLA), known to trigger apoptosis, was tested as radiosensitizer in breast cancer cells MCF-7 and MDA-MB-231. The CLA-mix, made up of the isomers CLA-9cis 11trans and CLA-10trans 12cis, w...
journal_title:Canadian journal of physiology and pharmacology
pub_type: 杂志文章
doi:10.1139/y04-003
更新日期:2004-02-01 00:00:00