Effect of Intramuscular Administration of Antibiotics on the Oxygen Consumption of Normal and Hyperthyroid Rats

1957 ◽  
Vol 192 (1) ◽  
pp. 73-75 ◽  
Author(s):  
G. R. Vogel ◽  
S. M. Hauge ◽  
F. N. Andrews
Keyword(s):  
Oxygen Consumption ◽  
Oral Administration ◽  
Intramuscular Injection ◽  
Endocrine System ◽  
Penicillin G ◽  
Albino Rats ◽  
Stomach Tube ◽  
Procaine Penicillin ◽  
Before And After ◽  
Rate Of Oxygen Consumption

The oxygen consumption of normal and hyperthyroid albino rats was measured before and after the intramuscular injection of 1.2 mg (0.2 ml of solution) of procaine penicillin G, Aureomycin or Ilotycin. The final measurements were observed at either 1- or 3-hour intervals after the injection. The antibiotics caused a statistically significant decrease in the rate of oxygen consumption in both normal and hyperthyroid rats. This effect diminished with time. Similar effects were observed with procaine penicillin G after oral administration by stomach tube. It is suggested that antibiotics may somehow influence the endocrine system, possibly the level of circulating thyroxin. Such studies are in progress.

STUDIES OF PENICILLIN IN PEDIATRICS

PEDIATRICS ◽  
1950 ◽  
Vol 5 (4) ◽  
pp. 664-671
Author(s):  
B. M. KAGAN ◽  
M. NIERENBERG ◽  
D. GOLDBERG ◽  
A. MILZER
Keyword(s):  
Intramuscular Injection ◽  
Room Temperature ◽  
Serum Levels ◽  
Sesame Oil ◽  
Peanut Oil ◽  
Penicillin G ◽  
Procaine Penicillin ◽  
Pertinent Data ◽  
Significant Difference ◽  
Pediatric Use

Table I summarizes most of the pertinent data in this report on the serum penicillin concentrations 12 and 24 hours after intramuscular injection of K penicillin G in peanut oil and beeswax, which is fluid at room temperature, and of three different procaine penicillin preparations. These three preparations are procaine penicillin G in sesame oil, procaine penicillin G in peanut oil with 2% aluminum monostearate, and procaine penicillin G in water with Na-carboxymethylcellulose. When they were given in a dosage of 8000 u./lb. to infants and children, weighing between 4.5 and 18.0 kg., there was no statistically significant difference in the serum levels obtained. A dosage schedule for these preparations is suggested for pediatric use. The aqueous preparation offers some advantages which are discussed. Experiences are reported which emphasize the necessity of avoiding intravenous administration of all these preparations.

scholarly journals Stimulation of Oxygen Consumption with Fluid Absorption in Insect Recta

1982 ◽  
Vol 101 (1) ◽  
pp. 233-254
Author(s):  
D.F. HOULIHAN ◽  
D. SELL
Keyword(s):  
Oxygen Consumption ◽  
Time Course ◽  
Fluid Injection ◽  
Fluid Absorption ◽  
Fluid Uptake ◽  
Local Osmosis ◽  
Before And After ◽  
Rate Of Oxygen Consumption ◽  
Stimulation Of

The oxygen consumption of excised abdomens of cockroaches and locusts has been measured before and after the injection of fluids into the ligated recta. Fluid injection caused a transient stimulation of oxygen consumption of up to 30% of the resting rate. The extra amount of oxygen consumed is positively correlated with the osmolality of the fluid injected and the amount of fluid absorbed. Parallel experiments were carried out on the time course of fluid uptake; these experiments revealed a correlation first between a rapid increase in fluid absorption and stimulation of oxygen consumption, and secondly between the final resting rate of oxygen consumption and a slower absorption of fluid. Locusts take up fluid at double the rate of cockroaches and have double the stimulation in oxygen consumption following fluid injection. In locusts the increases in oxygen consumption can also be correlated with the net movement of Na+, K+and Cl− from the rectum. The stimulation of oxygen consumption during fluid uptake is discussed in relation to the local osmosis model for fluid uptake.

PENICILLIN LEVELS IN MILK FOLLOWING PARENTERAL ADMINISTERATION OF PROCAINE PENICILLIN G1

1961 ◽  
Vol 24 (1) ◽  
pp. 7-10 ◽  
Author(s):  
M. Yusaf Vaid ◽  
C. C. Prouty ◽  
A. O. Shaw ◽  
R. E. Watts
Keyword(s):  
Body Weight ◽  
Intramuscular Injection ◽  
Single Injection ◽  
Aqueous Suspension ◽  
Penicillin G ◽  
Intramuscular Administration ◽  
Procaine Penicillin

Penicillin levels in milk were determined following the intramuscular administration of two types of procaine penicillin G, the aqueous suspension and the oil base with aluminum monostearate. Three injections of the aqueous suspension type were administered, at intervals of 24 hours, to each of twelve cows. A single injection of the oil base type was given to each of twelve cows. In all instances the dose administered was at the approximate level of 5000 u/lb. of body weight. Higher concentrations of penicillin were found in the milk from cows receiving the aqueous suspension type. The highest levels for the two types were 0.52 and 0.15 units per ml. respectively. However, penicillin persisted longer in the milk from cows to which the oil base type was administered. Following the use of each type of procaine penicillin G the levels of this drug in the milk from the different cows of the same series varied considerably. The results of this study indicate a withholding period of at least 60 hours following the last intramuscular injection of procaine penicillin G, aqueous suspension and 108 hours after procaine penicillin G, oil base with aluminum stearate.

IMPROVED LOCAL TOLERANCE TO BENZATHINE PENICILLIN G

PEDIATRICS ◽  
1958 ◽  
Vol 21 (2) ◽  
pp. 243-247
Author(s):  
Saul Krugman ◽  
Eva V. Ebin
Keyword(s):  
Intramuscular Injection ◽  
Local Reaction ◽  
Penicillin G ◽  
Benzathine Penicillin ◽  
Local Tolerance ◽  
Procaine Penicillin ◽  
Equal Dose ◽  
Benzathine Penicillin G ◽  
Local Reactions

Four types of penicillin for intramuscular injection were compared for incidence of local reaction: (1) suspension of benzathine penicillin G, 600,000 units in 1 ml; (2) benzathine penicillin G, 600,000 units, with 5 mg of prednisolone, in 1 ml; (3) benzathine penicillin G, 600,000 units, plus aqueous procaine penicillin, 600,000 units, in 2 ml; and (4) aqueous procaine penicillin, 1,200,000 units in 2 ml. A total of 320 children were evaluated at 24 hours, and the following percentages of severe local reaction were recorded for the four penicillin preparations listed: (1) 54%; (2) 9%; (3) 11.5%; and (4) 4%. The incidence of mild local reactions was the same following all four preparations, 11 to 12%. The local tolerance to benzathine penicillin G, 600,000 units, was significantly improved by combining it with either 5 mg of prednisolone, or an equal dose and volume of aqueous procaine penicillin.

Exercising with and Without Lungs: II. Experimental Elimination of Pulmonary and Buccopharyngeal Gas Exchange in Individual Salamanders (Ambystoma Tigrinum)

1988 ◽  
Vol 138 (1) ◽  
pp. 487-497 ◽  
Author(s):  
MARTIN E. FEDER
Keyword(s):  
Oxygen Consumption ◽  
Gas Exchange ◽  
Ambystoma Tigrinum ◽  
Airway Closure ◽  
Diffusing Capacity ◽  
Oxygen Requirement ◽  
Aerobic Activity ◽  
Before And After ◽  
Rate Of Oxygen Consumption ◽  
Limited Scope

To ascertain whether the presence of lungs per se, or some other physiological feature, might account for the differences in oxygen consumption and stamina previously observed in an interspecific comparison (Full et al. 1988), individual salamanders (Ambystoma tigrinum) were exercised on a treadmill before and after their nares and mouth had been sealed. After airway closure, animals behaved normally and suffered no mortality. Airway closure reduced the routine MO2 (rate of oxygen consumption) by an average of 47% in six of seven individuals. Animals with open airways increased their MO2 2-to 4-fold during locomotion at 11 cm s−1, and did not fatigue in 22 min of exercise at this speed. Animals with closed airways managed only small increases above the routine MO2 during exercise at 11 cm s−1, and none could sustain activity for more than 10 min. Thus, exclusively skin-breathing Ambystoma cannot increase cutaneous gas exchange to compensate for the elimination of pulmonary and buccopharyngeal respiration; locomotor stamina suffers accordingly. Small salamanders can apparently increase cutaneous gas exchange during activity, although large salamanders cannot, because cutaneous diffusing capacity and the resting oxygen requirement approach one another with increasing body size; the skin of large salamanders apparently has a limited scope for aerobic activity.

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