Factors Influencing the Urinary Excretion of Phenol and Cresols

1987 ◽  
pp. 161-168
Author(s):  
F. Sanguinetti ◽  
M. C. Sanguinetti ◽  
S. Mantovani ◽  
C. Melandri
Keyword(s):  
Urinary Excretion ◽  
Factors Influencing

Factors Influencing the Urinary Excretion of 3′,5′-Adenosine Monophosphate in Humans

1970 ◽  
Vol 30 (3) ◽  
pp. 316-324 ◽  
Author(s):  
ANDREW L. TAYLOR ◽  
BERNARD B. DAVIS ◽  
L. GREGORY PAWLSON ◽  
JOHN B. JOSIMOVICH ◽  
DANIEL H. MINTZ
Keyword(s):  
Urinary Excretion ◽  
Adenosine Monophosphate ◽  
Factors Influencing

Hormonal factors influencing postirradiation creatinuria and polyuria in the rat

1959 ◽  
Vol 196 (6) ◽  
pp. 1352-1355 ◽  
Author(s):  
G. M. Krise ◽  
C. M. Williams
Keyword(s):  
Gamma Radiation ◽  
Urinary Excretion ◽  
Antidiuretic Hormone ◽  
Intramuscular Injection ◽  
Whole Body ◽  
Albino Rats ◽  
Hormonal Factors ◽  
Factors Influencing ◽  
Adrenalectomized Rats

Normal albino rats exposed to 1500 r of whole-body Co60 gamma radiation were found to have a significant increase in urinary creatine excretion for the first 3 postirradiation days. Adrenalectomized rats, irradiated at 8 days postoperatively, did not show a creatinuria significantly greater than nonirradiated controls. Thyroparathyroidectomized rats, irradiated at 8 days postoperatively, did not have a significant increase in urinary creatine excretion over that of nonirradiated fasted controls. There were no significant increases in polyuria or polydipsia on the 1st postirradiation day in either the adrenalectomized or thyroparathyroidectomized rats. The intramuscular injection of 500 mu of the antidiuretic hormone vasopressin (Pitressin tannate) in oil inhibited postirradiation polydipsia and polyuria in normal rats but significantly increased the urinary excretion of creatine over that of irradiated noninjected controls.

Factors Influencing the Urinary Excretion of Free Catecholamines in Man

1973 ◽  
Vol 44 (3) ◽  
pp. 253-265 ◽  
Author(s):  
Mary M. Townshend ◽  
A. J. Smith
Keyword(s):  
Physical Activity ◽  
Myocardial Infarction ◽  
Renal Function ◽  
Urinary Excretion ◽  
Diurnal Variation ◽  
Normal Subjects ◽  
Urinary Catecholamine ◽  
Catecholamine Excretion ◽  
Factors Influencing ◽  
Noradrenaline And Adrenaline

1. The 24 h urinary excretion of noradrenaline and adrenaline is significantly lower in recumbent than ambulant normal subjects. 2. A diurnal variation exists in catecholamine excretion, the lowest values occurring during sleep. 3. Diurnal variation in sodium excretion parallels that in noradrenaline and adrenaline loss but the cycles can be separated by acute alterations in sleep/awake pattern. 4. Diurnal variation is lost during exercise, after myocardial infarction and was absent pre-operatively in a patient with a phaeochromocytoma. 5. Acute alterations in renal blood flow, diuresis, natriuresis and urinary acidification do not alter catecholamine excretion significantly. 6. Urinary catecholamine excretion is related to physical activity and wakefulness; the normal diurnal variation is easily overriden by sustained sympatho-adrenal activity. Alterations in renal function in exercise or after myocardial infarction do not account for the observed increases in catecholamine excretion.

Factors influencing adhesive bonding at the bone/implant interface

1992 ◽  
Vol 50 (2) ◽  
pp. 1114-1115
Author(s):  
Julie A. Martini ◽  
Robert H. Doremus
Keyword(s):  
Electron Microscopy ◽  
Adhesive Bonding ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Bone Implant ◽  
Factors Influencing ◽  
Lr White ◽  
Transmission Electron ◽  
New Zealand White Rabbits ◽  
Scanning Electron

Tracy and Doremus have demonstrated chemical bonding between bone and hydroxylapatite with transmission electron microscopy. Now researchers ponder how to improve upon this bond in turn improving the life expectancy and biocompatibility of implantable orthopedic devices.This report focuses on a study of the- chemical influences on the interfacial integrity and strength. Pure hydroxylapatite (HAP), magnesium doped HAP, strontium doped HAP, bioglass and medical grade titanium cylinders were implanted into the tibial cortices of New Zealand white rabbits. After 12 weeks, the implants were retrieved for a scanning electron microscopy study coupled with energy dispersive spectroscopy.Following sacrifice and careful retrieval, the samples were dehydrated through a graduated series starting with 50% ethanol and continuing through 60, 70, 80, 90, 95, and 100% ethanol over a period of two days. The samples were embedded in LR White. Again a graduated series was used with solutions of 50, 75 and 100% LR White diluted in ethanol.

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