scholarly journals Blood Volume and Molybdenum Toxicity in Rabbits

Blood ◽  
1953 ◽  
Vol 8 (12) ◽  
pp. 1105-1106 ◽  
Author(s):  
JACK D. BURKE ◽  
L. R. ARRINGTON ◽  
G. K. DAVIS
Keyword(s):  
Body Weight ◽  
Blood Volume ◽  
Normal Blood ◽  
Normal Range

Abstract The blood volume of normal rabbits and rabbits anemic with molybdenum toxicity was determined using the dye and P32 methods. The blood volume per unit of body weight was found to be within the normal range indicating that rabbits were able to maintain normal blood volume even though anemic as a result of molybdenum toxicity.

EFFECT OF SUBMAXIMAL EXERCISE ON SYSTOLIC AND DIASTOLIC BLOOD PRESSURE IN YOUNG SEDENTARY NORMOTENSIVE NEPALESE MEDICAL STUDENTS

2003 ◽  
Vol 42 (149) ◽  
pp. 315-6
Author(s):  
Arijit Ghosh ◽  
T Pramanik
Keyword(s):  
Blood Pressure ◽  
Medical Students ◽  
Diastolic Blood Pressure ◽  
Submaximal Exercise ◽  
Muscular Exercise ◽  
Normal Blood ◽  
Normal Blood Pressure ◽  
Standing Posture ◽  
Normal Range ◽  
Exercise Blood Pressure

Higher exercise blood pressure represents low cardiorespiratory status of an individual and vice versa. Thechanges in systolic and diastolic blood pressure in response to rhythmic isotonic muscular exercise in sedentaryyoung normotensive Nepalese students were assessed. Normal blood pressure in standing posture in maleand female subjects are about 115 / 75 mm of Hg. and 106 / 71 mm of Hg. respectively. Just after the exercisesystolic blood pressure increases moderately in both the sexes, whereas diastolic blood pressure remainsunchanged in most of the females. Diastolic blood pressure is found to be decreased slightly in the males,just after exercise. The present study indicates the cardiorespiratory status of the Napalese medical studentsis within normal range.

Urinary Bladder Volume and the Reabsorption of Water from the Urine of Crabs

1974 ◽  
Vol 60 (1) ◽  
pp. 167-181
Author(s):  
J. A. RIEGEL ◽  
A. P. M. LOCKWOOD ◽  
J. R. W. NORFOLK ◽  
N. C. BULLEID ◽  
P. A. TAYLOR
Keyword(s):  
Body Weight ◽  
Urinary Bladder ◽  
Blood Volume ◽  
Ethacrynic Acid ◽  
Sea Water ◽  
Carcinus Maenas ◽  
Bladder Volume ◽  
Active Secretion ◽  
51Cr Edta

1. Measurements have been made to determine the blood volume, bladder volume, clearance of 131I-sodium diatrizoate and U/H for diatrizoate in the crabs Carcinus maenas and Macropipus (Portunus) depurator. 2. Observed values of clearance blood volume and bladder volume in the two species at 18 °C were: Clearance (as % blood volume per day), Macropipus 56.1±14.5; Carcinus 27.1±5.8; Blood volume (as % body weight), Macropipus 21.0±4.0; Carcinus 19.2±3.0; Bladder volume (as % blood volume), Macropipus 12.1 ±5.0; Carcinus 11.0±8.0. 3. It is shown that the measured U/H differs from that to be expected if no reabsorption of water or secretion of diatrizoate occurs. 4. 14C-inulin and 51Cr-EDTA are excreted in an essentially similar manner to 131I-diatrizoate by Carcinus, implying that any active secretion of diatrizoate must be small in magnitude. 5. Injections of ethacrynic acid decrease the U/H ratio for diatrizoate relative to that in control Carcinus injected with sea water. In some Carcinus the concentration of diatrizoate in the urine comes to exceed that initially present in the blood. Both these points are taken, with 3, as support for the conclusion that water can be withdrawn from the primary urine of Carcinus.

Serum Levels of Melatonin in Cancer Patients and their Relation to Body Sizes

1988 ◽  
Vol 3 (3) ◽  
pp. 193-196 ◽  
Author(s):  
S. Barni ◽  
P. Lissoni ◽  
S. Crispino ◽  
F. Rovelli ◽  
G. Esposti ◽  
...  
Keyword(s):  
Body Weight ◽  
Body Size ◽  
Cancer Patients ◽  
Serum Levels ◽  
Blood Levels ◽  
Melatonin Secretion ◽  
Normal Range ◽  
Blood Concentrations ◽  
Patients With Cancer ◽  
Body Sizes

Melatonin secretion is often enhanced in patients with cancer. In the light of a reported correlation between melatonin levels and body size, we investigated blood levels of this pineal hormone in a group of 72 patients affected by cancer, 30 of whom had body weight within the normal range, 30 were obese and the last 12 cases had body weight below the normal range, in order to establish whether in fact melatonin blood concentrations were related to body size. Melatonin levels were high in 19/72 patients (26%). The mean levels of the pineal hormone were similar in patients with normal, low and high body weight. Finally, there was no significant correlation between melatonin values and body weight, height or surface. Melatonin secretion thus does not appear to be influenced by body size in cancer patients.

The Water Balance of a Serpulid Polychaete, Mercierella Enigmatica (Fauvel)

1974 ◽  
Vol 60 (2) ◽  
pp. 321-330
Author(s):  
HELEN LE B. SKAER
Keyword(s):  
Body Weight ◽  
Water Balance ◽  
Blood Volume ◽  
Blood Concentration ◽  
Volume Regulation ◽  
Sea Water ◽  
External Medium ◽  
Wide Range ◽  
Natural Range ◽  
Passive Movements

1. The serpulid polychaete Mercierella enigmatica is found naturally in a wide range of salinities - from fresh water to 150% sea water (< 1-55‰ < 25.8-1421 mOsm). 2. Changes in body weight, blood volume and blood osmolality have been measured both during and after equilibration of animals with media of altered salinity. 3. The blood remains similar in osmolality to the external medium over a very wide range of salinity (43-1620 mOsm); osmoregulation occurs only at the lowest limit of the natural range. 4. Mercierella enigmatica shows volume regulation; after 4 days of equilibration with a medium of altered salinity the blood volume shows much less change than the blood concentration. 5. During equilibration there appear to be passive movements of both water and salts between the animals and their environment.

Control circulatory values of morphinepentobarbitalized dogs

1960 ◽  
Vol 199 (5) ◽  
pp. 797-799 ◽  
Author(s):  
S. Deavers ◽  
E. L. Smith ◽  
R. A. Huggins
Keyword(s):  
Heart Rate ◽  
Body Weight ◽  
Cell Volume ◽  
Blood Volume ◽  
Plasma Volume ◽  
Protein Concentration ◽  
Diastolic Pressure ◽  
Systolic Pressure ◽  
Control Data ◽  
Plasma Protein Concentration

Mean control data on a series of 100 dogs are presented. Cell volume, measured with Cr51-tagged red cells and plasma volume determined simultaneously by T-1824 dye was 33.5 ± 0.74 cc/kg and 50.2 ± 1.11 cc/kg, respectively. The venous hematocrit was 45.2% and the circulatory/venous hematocrit ratio was 0.89 ± 0.01 for the group. The plasma protein concentration of these animals was 6.25 ± 0.07 gm/100 cc. No difference in blood volume per unit of body weight was found between large (12.6 kg) and small (5.8 kg) dogs. The femoral mean systolic pressure was 139.0 ± 2.53 mm Hg, the diastolic pressure 65.6 ± 1.46 mm Hg and the heart rate 85.9 ± 2.86/min.

Effects of hypoproteinemia on blood volume and arterial pressure of volume-loaded dogs

1990 ◽  
Vol 259 (5) ◽  
pp. H1317-H1324
Author(s):  
R. D. Manning
Keyword(s):  
Body Weight ◽  
Arterial Pressure ◽  
Blood Volume ◽  
Plasma Protein ◽  
Protein Concentration ◽  
Control Period ◽  
Plasma Protein Concentration ◽  
Autologous Plasma ◽  
Protein Mass

Studies were performed in 14 conscious, anephric dogs to clarify the role of blood volume in the genesis of hypertension. The dogs were splenectomized and had plasma protein concentration (PPC) reduced to 2.7 g/dl by daily plasmapheresis for 9 days. This hypoproteinemia resulted in a 20% decrease in both blood volume and mean arterial pressure. On the 10th day the dogs were nephrectomized. On the 11th day after a 3-h control period with plasmapheresis, lactated Ringer equivalent to 10 or 20% of body weight was intravenously infused. By 25 h postinfusion blood volume had not increased, and the dogs were still hypotensive. At 25 h plasma protein mass was returned to normal by intravenous infusion of autologous plasma, the average blood volume of the three low PPC groups increased approximately 50%, and the arterial pressure increased greater than 60%. The decrease in PPC shifted the regression of blood volume on sodium space down the blood volume axis. In conclusion, the dependence of arterial pressure on blood volume was demonstrated by the decrease in both blood volume and arterial pressure after PPC reduction, the constancy of blood volume and pressure during Ringer infusion, and the increase in both volume and pressure after plasma infusion.

Effect of Fasting and Refeeding on Body Weight, Rectal Temperature, Blood Volume and Various Blood Constituents in Growing Swine

1964 ◽  
Vol 84 (3) ◽  
pp. 295-304 ◽  
Author(s):  
E. T. Kornegay ◽  
E. R. Miller ◽  
B. E. Brent ◽  
C. H. Long ◽  
D. E. Ullrey ◽  
...  
Keyword(s):  
Body Weight ◽  
Blood Volume ◽  
Rectal Temperature ◽  
Blood Constituents ◽  
Fasting And Refeeding
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