VIBRIO CHOLERAE IN FLUID MEDIA

1950 ◽  
Vol 28e (6) ◽  
pp. 257-261
Author(s):  
L. E. Ranta ◽  
Mary McLeod

Studies have been made of the growth of V. cholerae in fluid media of chemically defined compositions. The addition of three amino acids, tyrosine, asparagine, and glycine, to a fluid medium containing inorganic salts produced a growth of V. cholerae equivalent to a 450 p.p.m. silica standard. Under conditions of aeration with an air and carbon dioxide mixture, yields comparable to the turbidity of a 1600 p.p.m. silica standard were obtained with a medium composed of 0.67 gm. of tyrosine, 0.42 gm. of asparagine, 0.51 gm. of glycine, 5.0 gm. of sodium chloride, 5.0 gm. of ammonium sulphate, 0.75 gm. of dipotassium hydrogen phosphate, 0.1 gm. of magnesium sulphate, 10.0 gm. of glucose, and 15.0 gm. of sodium bicarbonate dissolved in one liter of distilled water.

1918 ◽  
Vol 28 (5) ◽  
pp. 551-558 ◽  
Author(s):  
Martha Wollstein ◽  
S. J. Meltzer

Intrabronchial injections of isotonic as well as of hypotonic solutions of sodium chloride or even of distilled water cause no pulmonary lesions. Intrabronchial injections of mercuric chloride even in a dilution of 1:10,000 cause a marked pulmonary lesion. The lesion is not of an inflammatory character; it consists of congestion, formation of thrombi, and hemorrhage. Intrabronchial injections of hypertonic solutions of sodium chloride as well as of sodium sulfate cause, in most instances, no lesions whatsoever. In a smaller number of cases in which moderate lesions were present they may have been due either to a previous infection (distemper) or to some predisposing cause (winter months). Intrabronchial injection of magnesium salts apparently tends to cause moderate pulmonary lesions (bronchopneumonia). This seems especially true of magnesium sulfate.


During the course of an investigation on “The Cross-inoculation of the nodule-forming bacteria from Leguminous and non-Leguminous plants,”* it was noticed that in all bacterial cultures prepared from the algal zone of the root-tubercles of cycads taken from below the surface of the soil, Pseudomonas radicicola was associated with a species of Azotobacter . In Order to determine to what extent, if any, this association gave an increased power of assimilating free nitrogen, the two forms were obtained as pure cultures by successive platings on a medium composed of maltose 20 grammes, monobasic potassium phosphate 0·5 gramme, sodium chloride 0·5 gramme, calcium carbonate 0·5 gramme, ferrous sulphate 0·1 gramme, agar 15 grammes and distilled water 1000 c. c. Separate cultures of each and a mixed culture were then grown in fluid media in duplicate 500 c. c. Erelenmeyer flasks containing 250 c. c. Of the above medium, omiting the agar but adding 10 grammes of mannite. Control flasks were kept side by side with the inoculated flasks.


1973 ◽  
Vol 13 (60) ◽  
pp. 22 ◽  
Author(s):  
DG Saville ◽  
CH Davis ◽  
HG Willats ◽  
P McInnes

Lambs fattened on wheat diets were given supplements of sodium buffers and sodium chloride, and feed intake, body weight changes, and plasma mineral levels were measured. During the 84-day feeding period, daily feed intakes were 42 per cent higher and body weigh: increased by 36 per cent when wheat was supplemented with sodium bicarbonate, sodium bicarbonate and disodium hydrogen phosphate, or sodium chloride. When the diet was supplemented with disodium hydrogen phosphate body weight gains and feed intakes were lower than with the other supplements. This supplement also produced a high incidence of urinary calculi and this was not overcome by increasing the calcium level in the diet. The importance of these results in relation to grain feeding and buffer supplementation is discussed.


1923 ◽  
Vol 38 (1) ◽  
pp. 55-71 ◽  
Author(s):  
Russell L. Haden ◽  
Thomas G. Orr

Experiments to determine the effect of furnishing an ample supply of sodium chloride on the toxemia of pyloric and intestinal obstruction are reported. A fall in chlorides is the first and seemingly most significant change to take place in the blood after pyloric and intestinal obstruction. The chloride is apparently utilized by the body as a protective measure against the primary toxic substance. Two dogs with pyloric obstruction were given 50 cc. of 10 per cent NaCl subcutaneously daily. One lived 3 days, the other 4. The blood showed little change, except a marked terminal rise in chlorides. Animals given a like amount of distilled water or 25 per cent glucose showed the changes typical of untreated animals. The obstruction of the pylorus was released in six dogs 48 to 72 hours after the initial operation. Two died within 24 hours after the second operation with a high non-protein nitrogen in the blood. Two survived but showed a high level of non-protein nitrogen in the blood and a high nitrogen excretion in the urine, low blood chlorides, and a marked alkalosis. One dog in such a state died on the 13th day from peritonitis, arising in a wound infection. The other showed a marked fall in non-protein nitrogen in the blood following the administration of 10 gm. of sodium chloride by mouth, but died following the intravenous injection of 25 per cent sodium chloride. Two animals were given 50 cc. of 10 per cent NaCl subcutaneously, at the time of the second operation. The blood rapidly returned to normal and complete recovery followed. Two dogs with the duodenum obstructed by section and inversion of the cut ends were treated with 10 per cent sodium chloride after the obstruction had existed for 48 hours and the characteristic blood changes had developed. The non-protein nitrogen returned to normal within 48 hours after treatment was begun. One dog died following a lateral anastomosis for relief of the obstruction. A second operation was not attempted in the other animal. Two dogs in which the duodenum was obstructed by section and inversion of the cut ends were given 500 cc. of 0.85 per cent NaCl subcutaneously on the day of operation and each day thereafter until death. One dog lived 21 days, the other 28. Both dogs showed a marked alkalosis, but never any rise in the non-protein nitrogen of the blood. The animals at autopsy showed intussusception of the ileum with extensive ulceration. In one there was a perforation and terminal peritonitis. The operation wounds healed normally. Three dogs with section of the duodenum were given 500 cc. of distilled water every day. One died in 24 hours, one in 48 hours, and the third in 72 hours. Autopsy showed no cause for death other than toxemia. One dog with section of the duodenum was given 500 cc. of 2 per cent glucose every day. The blood showed a rapid rise in non-protein nitrogen and carbon dioxide-combining power, and a fall in chlorides. The animal died 72 hours after operation. Three dogs with section of the duodenum were given 500 cc. of 1 per cent sodium bicarbonate every day. One dog died in 72 hours, one lived 7 days, and the third lived 9 days. All developed a high non-protein nitrogen in the blood and two showed marked clinical symptoms of an alkalosis. These results demonstrate that solutions of sodium chloride have a marked effect in preventing and controlling the toxemia of pyloric and intestinal obstruction as shown in clinical symptoms and in chemical changes in the blood. Dogs given an abundant supply of distilled water died more quickly than untreated control animals. Solutions of glucose have no specific value, and sodium bicarbonate solutions prolong life only a short while. Good therapeutic results have been obtained with very concentrated sodium chloride solutions, and with dry sodium chloride given by mouth. It seems evident that sodium chloride has a specific action in preventing and possibly in controlling the changes produced by the toxic body. Sodium chloride is a valuable therapeutic agent in pyloric and high intestinal obstruction.


1947 ◽  
Vol 25c (4) ◽  
pp. 129-136 ◽  
Author(s):  
H. Katznelson

Potassium either as potassium chloride or dipotassium hydrogen phosphate was found to stimulate production of 2,3-butanediol from starch by Bacillus polymyxa and to increase the diol: ethanol ratio. In a casein hydrolysate medium, potassium alone produced this effect; however, in a synthetic (amino acid) medium, phosphorus was found to cause a slight increase in yield of diol especially in the presence of potassium.Potassium, phosphorus, and magnesium were shown to be required for growth of B. polymyxa in a synthetic medium containing glucose, amino acids, and biotin.By means of 'resting cells' of B. polymyxa, acting on glucose, it was demonstrated that potassium specifically stimulated the diol-synthesizing mechanism and that sodium could replace this element partially.


Author(s):  
Amanda Guembaroski ◽  
Moisés Marcelino Neto ◽  
Rigoberto Morales ◽  
Amadeu Sum

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