Effect of hypothermia on the secretion of immunoreactive insulin in response to glucose

1968 ◽  
Vol 46 (3) ◽  
pp. 411-415 ◽  
Author(s):  
B. J. Lin ◽  
J. Hunter ◽  
R. Weldon ◽  
R. E. Haist
Keyword(s):  
Venous Blood ◽  
Insulin Response ◽  
Immunoreactive Insulin ◽  
Rapid Rise ◽  
Blood Samples ◽  
Insulin Levels ◽  
Glucose Levels ◽  
Glucose Injection ◽  
Before And After ◽  
Sugar Levels

Insulin levels in the serum of peripheral venous blood samples from normothermic (37 °C) and hypothermic (24.5 ± 0.5 °C) dogs were estimated by immunoassay before and after the intravenous injection of glucose. In contrast to the rapid rise and fall of glucose levels and insulin levels in normothermic dogs following glucose injection, in most of the hypothermic dogs blood sugar levels rose and were sustained above normal levels throughout the test. These changes were accompanied by elevations in blood insulin levels which were sustained or progressively increased. Several hypothermic animals showed a reduced insulin response despite similar changes in blood glucose.

Relationship between plasma and cerebrospinal fluid insulin levels of dogs.

1977 ◽  
Vol 233 (4) ◽  
pp. E331 ◽  
Author(s):  
S C Woods ◽  
D Porte
Keyword(s):  
Cerebrospinal Fluid ◽  
Insulin Response ◽  
Immunoreactive Insulin ◽  
Insulin Levels ◽  
Endogenous Insulin ◽  
Intravenous Insulin ◽  
Before And After ◽  
Basal Plasma ◽  
Anesthetized Dogs ◽  
Fluid Levels

Several experiments are reported in which insulin or glucose was administered intravenously to anesthetized dogs. Plasma and cerebrospinal fluid levels of glucose and immunoreactive insulin were determined at several intervals before and after the administrations. Intravenous insulin (0.2 U/kg) administered as either a pulse or a 1-h infusion caused a large increase of plasma insulin, but a relatively small increase of cerebrospinal fluid insulin. When endogenous insulin was elevated by the administration of glucose (100 mg/kg), cerebrospinal fluid insulin changed only slightly. A significant correlation was found between steady-state plasma and CSF endogenous insulin levels. The results are interpreted to indicate that the level of insulin in the cerebrospinal fluid reflects basal plasma level plus an integral over time of the insulin response to challenge. The implications of such a system are discussed.

scholarly journals Consumption of Raw Orange, 100% Fresh Orange Juice, and Nectar- Sweetened Orange Juice—Effects on Blood Glucose and Insulin Levels on Healthy Subjects

Nutrients ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 2171 ◽  
Author(s):  
Dimitrios Papandreou ◽  
Emmanouella Magriplis ◽  
Myriam Abboud ◽  
Zainab Taha ◽  
Eleftheria Karavolia ◽  
...  
Keyword(s):  
Blood Glucose ◽  
University Students ◽  
Orange Juice ◽  
Repeated Measures ◽  
Fruit Juice ◽  
Venous Blood ◽  
Insulin Response ◽  
Normal Weight ◽  
Insulin Levels ◽  
Glucose Levels

Objective: The aim of this study is to investigate the effect of consumption of raw orange (RO), 100% fresh orange juice (FOJ), and nectar-sweetened orange juice (NSOJ) on postprandial glucose and insulin levels in non-diabetic young Emirati women. Research Methods: This is a prospective, three-way, crossover study design. Blood records of thirteen normal weight and seven healthy obese university students were analyzed from Zayed University on three random days with the following three meal samples: 2 ROs, 100% FOJ, and NSOJ. Venous blood was collected at 0, 30, 60, 90, and 120 minutes after the respective meal consumption. Statistical analyses included repeated measures analysis of variance and calculations of the area under the glucose and insulin curves (AUC) for each one of the meal samples. Results: Total fasting glucose and insulin levels did not differ by treatment in the normal versus obese group. All three meals had no significant effects on the plasma glucose levels. However, there was a significant change in plasma insulin concentrations at 120 min compared with that at 0 min for RO: −14 (−27.05, −0.90, P < 0.001); 100% FOJ −13.7 (−28.80, 1.44, P < 0.001); and NSOJ: −9.2 (−28.75, 10.30, P < 0.001). Conclusions: This study shows that whole fresh fruit, 100% fruit juice, and sweetened fruit juice did not have a significant effect on the blood glucose levels in non-diabetic Emirati university students. However, a significant decrease in insulin response and HOMA-IR on all three sample meals was observed.

ADRENAL 17-HYDROXYCORTICOSTEROID SECRETION IN THE DOG IN RESPONSE TO ETHANOL

1972 ◽  
Vol 70 (4) ◽  
pp. 736-740 ◽  
Author(s):  
T. Suzuki ◽  
R. Higashi ◽  
T. Hirose ◽  
H. Ikeda ◽  
K. Tamura
Keyword(s):  
Venous Blood ◽  
Secretion Rate ◽  
Conscious Dogs ◽  
Blood Samples ◽  
Before And After

ABSTRACT Conscious dogs were infused intravenously with ethanol in doses of 0.7 and 1.0 g/kg. The adrenal venous blood samples were collected before and after the infusion of ethanol and analysed for 17-hydroxycorticosteroids (17-OHCS). After the infusion of 0.7 g/kg (subanaesthetic dose) of ethanol the adrenal 17-OHCS secretion rate showed either a slight increase or no change. After the infusion of 1.0 g/kg (anaesthetic dose) of ethanol the adrenal 17-OHCS secretion rate increased markedly and reached 1.21±0.15 (mean±sem) μg/kg/min, while it was 0.09±0.023 μg/kg/min before the infusion.

Rapid Change of Platelet Aggregability in Acute Hyperglycemia

2000 ◽  
Vol 83 (03) ◽  
pp. 475-479 ◽  
Author(s):  
Tomohiro Sakamoto ◽  
Hiroaki Kawano ◽  
Nobutaka Hirai ◽  
Shinzo Miyamoto ◽  
Keiji Takazoe ◽  
...  
Keyword(s):  
Venous Blood ◽  
Rapid Change ◽  
Immunoreactive Insulin ◽  
Oral Glucose ◽  
Acute Hyperglycemia ◽  
Platelet Aggregability ◽  
Glucose Levels ◽  
Coronary Syndromes ◽  
Glucose Tolerance Tests ◽  
The One

SummaryWe examined the alteration of platelet aggregability in acute hyperglycemia during 75-gram oral glucose tolerance tests (OGTT). Twenty subjects underwent 75-gram OGTT and venous blood samples were obtained before (0 min), 60, 120 and 180 min postload. Platelet aggregability shown as the number of small platelet aggregates was measured with a novel laser-light scattering (LS) method. Platelet aggregability increased in parallel with both glucose and immunoreactive insulin (IRI) levels. The number of mean small aggregates at 60 min (12.30 ± 1.10 × 104) was significantly higher than the one at 0 min (8.32 ± 0.88 × 104, p <0.001), 120 min (10.63 ± 0.98 × 104, p <0.05) and 180 min (8.28 ± 0.84 × 104, p <0.001) (mean ± SEM). Small aggregates correlated positively with plasma glucose levels at 60 min postload (r = 0.67, p = 0.001) while not with IRI. It might be important to suppress transient hyperglycemia for preventing the onset of acute coronary syndromes that could be closely related to platelet hyperaggregability.

scholarly journals Evaluation of the Effect of Macronutrients Combination on Blood Sugar Levels in Healthy Individuals

2021 ◽  
Author(s):  
Berrak BASTURK ◽  
Zeynep KOC OZERSON ◽  
Aysun YUKSEL
Keyword(s):  
Blood Glucose ◽  
Fasting Blood Glucose ◽  
Protein Source ◽  
Carbohydrate Source ◽  
Glucose Levels ◽  
Positive Effects ◽  
Blood Glucose Levels ◽  
Before And After ◽  
Sugar Levels ◽  
Mean Blood Glucose

Background: The positive effects of blood glucose levels should be demonstrated in healthy or type 2 diabetic individuals who can be recommended to consume macronutrients (protein + fat) with carbohydrates. Therefore, at the end of the research planned with the amount of carbohydrates and fats that can be consumed in a meal, we aimed to recommend the consumption of food with high protein content egg together with the carbohydrate source. Methods: The study was carried out from Nov 2017 to Apr 2018 by looking at fasting blood glucose levels using feeding 2 different test foods on a minimum of 8 h of fasting in the Haliç University Sutluce Campus, Istanbul, Turkey. Before and after the carbohydrate and carbohydrate + protein source, blood glucose was measured from the fingertip for 3 days in 30 min, 60 min and 120 min periods. The average of 3 days was used in the analysis. Results: Blood glucose values were compared after individuals were given carbohydrate and carbohydrate + protein source. The mean blood glucose value 60 min after the carbohydrate administration was significantly higher than the average blood glucose value 60 min after the carbohydrate + protein administration (P= 0.006). Conclusion: A protein-containing diet positively affects the glycemia response and can recommend it. In individuals with diabetes, they should focus on the effects of proteins to achieve glycemia control.

Intracisternal insulin alters sensitivity to CCK-induced meal suppression in baboons

1986 ◽  
Vol 250 (5) ◽  
pp. R856-R860 ◽  
Author(s):  
D. P. Figlewicz ◽  
L. J. Stein ◽  
D. West ◽  
D. Porte ◽  
S. C. Woods
Keyword(s):  
Food Intake ◽  
Plasma Insulin ◽  
Insulin Infusion ◽  
Meal Size ◽  
Immunoreactive Insulin ◽  
Gut Peptides ◽  
Insulin Levels ◽  
Glucose Levels ◽  
Total Food Intake ◽  
Single Meal

We have previously reported that intravenous administration of the octapeptide of cholecystokinin (CCK-8) is more effective in reducing single meal size in baboons at noontime than in the morning. We have also reported that immunoreactive insulin levels in the cerebrospinal fluid (CSF) are elevated after animals have recently eaten. To test whether elevated CSF insulin levels can alter the efficacy of intravenous CCK to reduce meal size we administered subthreshold doses of CCK-8 to baboons infused with either synthetic CSF or CSF and insulin (100 microU X kg-1 X day-1) via the cisterna magna. Intravenous CCK-8 alone reduced 30-min meal size from 504 +/- 121 to 378 +/- 113 kcal (n = 7, P = NS). Chronic intracisternal insulin infusion enhanced CCK-8's suppressive effects such that 30-min meal size was reduced from 544 +/- 74 to 240 +/- 108 kcal (n = 7, P less than 0.005). Intracisternal insulin infusion had no significant effect on total food intake, basal plasma insulin and glucose levels, or postprandial plasma insulin and glucose levels. These findings suggest that central insulin may contribute to food intake regulation by modulating the ability of brain-gut peptides to alter single meal size.

Plasma catecholamines and their effect on blood lactate and muscle lactate output

1984 ◽  
Vol 57 (2) ◽  
pp. 321-325 ◽  
Author(s):  
W. N. Stainsby ◽  
C. Sumners ◽  
G. M. Andrew
Keyword(s):  
Venous Blood ◽  
Plasma Catecholamines ◽  
Muscle Group ◽  
O2 Uptake ◽  
Plantaris Muscle ◽  
Muscle Lactate ◽  
Blood Samples ◽  
Lactate Output ◽  
Before And After

This study was designed to test the hypothesis that epinephrine (E) and norepinephrine (NE) increase net muscle lactate output (L) of in situ gastrocnemius-plantaris muscle group during contractions. Plasma [E] and [NE] were measured before and after the surgical isolation of the muscle and at 10-min intervals during the 60-min experiments. Plasma [E] and [NE] were increased threefold by intravenous infusions of E (n = 3) or NE (n = 3) at a rate of 1.5 micrograms X kg body wt-1 X min-1. Arterial and muscle venous blood samples for O2 and lactate concentrations were also obtained. The infusions began at min 11 and repetitive isometric contractions (4 tw/s) began at min 31. The presurgery plasma [E] and [NE] averaged 0.34 and 0.52 ng/ml, respectively, and rose to 1.12 and 1.19 ng/ml 10 min after surgery. Arterial and venous lactate concentrations (CaL and CvL) increased continuously during E infusion but remained constant during NE infusion. Maximal L during the first 10 min of contractions was significantly increased compared with an identical earlier study without infusions. O2 uptake was not changed by the infusions. It is concluded that E causes CaL to rise and that both E and NE increase maximal net lactate output during contractions.

scholarly journals The effect of soluble- and insoluble-fibre supplementation on post-prandial glucose tolerance, insulin and gastric inhibitory polypeptide secretion in healthy subjects

1990 ◽  
Vol 64 (1) ◽  
pp. 103-110 ◽  
Author(s):  
L. M. Morgan ◽  
J. A. Tredger ◽  
J. Wright ◽  
V. Marks
Keyword(s):  
Gastric Emptying ◽  
Glucose Tolerance ◽  
Sugar Beet ◽  
Guar Gum ◽  
Venous Blood ◽  
Gastric Inhibitory Polypeptide ◽  
Soya Bean ◽  
Blood Samples ◽  
Insulin Levels ◽  
Prandial Insulin

Six healthy non-obese male subjects were given three test meals containing 100 g carbohydrate and 1.5 g soluble paracetamol, supplemented on one occasion with 10 g guar gum and on another with 10 g sugarbeet fibre. A further six subjects were given the same test meal supplemented on one occasion with 10 g soya-bean-cotyledon fibre and on another, 5 g glucomannan. Venous blood samples were taken before, and at intervals for 180 min following the meal, and analysed for insulin, gastric inhibitory polypeptide (GIP) and paracetamol (as an index of gastric emptying). Arterialized blood samples were taken and analysed for glucose. Meal supplementation with both guar gum and sugar-beet fibre improved glucose tolerance, but circulating glucose levels were unaffected by the addition of either soya-bean-cotyledon fibre or glucomannan to the meals. Supplementation with guar gum and glucomannan lowered post-prandial insulin levels. Insulin levels were enhanced by addition of soya-bean-cotyledon fibre to the meal and unaffected by sugar-beet fibre. Post-prandial GIP levels were lowered in the guar–gum–supplemented meal and augmented with sugar-beet fibre supplementation. Addition of glucomannan and soya-bean-cotyledon fibre did not affect circulating GIP levels. The study failed to confirm previous reports of improved glucose tolerance following glucomannan and soya-bean-cotyledon fibre supplementation. The failure of sugar-beet fibre to reduce post-prandial insulin secretion despite improved glucose tolerance may be due to the observed increased secretion of GIP. The increased insulin levels seen following soya-bean-cotyledon fibre supplementation cannot be attributed either to changes in glucose tolerance, GIP secretion or gastric emptying.

scholarly journals Decreased Skin-Mediated Detoxification Contributes to Oxidative Stress and Insulin Resistance

2012 ◽  
Vol 2012 ◽  
pp. 1-9
Author(s):  
Xing-Xing Liu ◽  
Chang-Bin Sun ◽  
Ting-Tong Yang ◽  
Da Li ◽  
Chun-Yan Li ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Insulin Resistance ◽  
Toxic Substances ◽  
Insulin Levels ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Glucose Injection ◽  
Plasma Insulin Levels ◽  
Induced Changes ◽  
The Relationship

The skin, the body's largest organ, plays an important role in the biotransformation/detoxification and elimination of xenobiotics and endogenous toxic substances, but its role in oxidative stress and insulin resistance is unclear. We investigated the relationship between skin detoxification and oxidative stress/insulin resistance by examining burn-induced changes in nicotinamide degradation. Rats were divided into four groups: sham-operated, sham-nicotinamide, burn, and burn-nicotinamide. Rats received an intraperitoneal glucose injection (2 g/kg) with (sham-nicotinamide and burn-nicotinamide groups) or without (sham-operated and burn groups) coadministration of nicotinamide (100 mg/kg). The results showed that the mRNA of all detoxification-related enzymes tested was detected in sham-operated skin but not in burned skin. The clearance of nicotinamide andN1-methylnicotinamide in burned rats was significantly decreased compared with that in sham-operated rats. After glucose loading, burn group showed significantly higher plasma insulin levels with a lower muscle glycogen level than that of sham-operated and sham-nicotinamide groups, although there were no significant differences in blood glucose levels over time between groups. More profound changes in plasma H2O2and insulin levels were observed in burn-nicotinamide group. It may be concluded that decreased skin detoxification may increase the risk for oxidative stress and insulin resistance.

scholarly journals Posttonsillectomy Bacteremia and Comparison of Tonsillar Surface and Deep Culture

2014 ◽  
Vol 2014 ◽  
pp. 1-5
Author(s):  
Mahmood Shishegar ◽  
Mohammad Javad Ashraf
Keyword(s):  
Venous Blood ◽  
Blood Cultures ◽  
Chronic Tonsillitis ◽  
Blood Samples ◽  
Hemolytic Streptococcus ◽  
Microbiological Study ◽  
Common Organism ◽  
Before And After ◽  
Deep Culture ◽  
Time Of Operation

Objective.This study aimed to identify the microorganisms of surface and depth of tonsils and whether these microorganisms bring the menace of bacteremia during tonsillectomy in the children under surgery.Materials and Methods.The culture specimens were taken from surface and depth of tonsil from the patients suffering from chronic tonsillitis at the time of operation. Also, 10 mL venous blood samples were taken 5 minutes before and after the operation for microbiological study.Results.According to the results, 112 (76.1%) and 117 (79.6%) cultures from surface and depth of tonsils represented multiple microorganisms, respectively. Besides, staphylococci coagulase positive was the most common organism in both surface and depth of tonsils. None of the preoperation blood cultures were positive, while 3 postoperation blood cultures (2.1%) were positive. Staphylococci coagulase negative and alpha hemolytic streptococcus were detected in 2 cases (1.4%) and 1 case (0.7%), respectively.Conclusion.In the present study, the two cultured sites were almost similar regarding the types of isolated microorganisms. Our results suggested that bacteremia might occur after tonsillectomy. Therefore, to avoid the possible dramatic outcomes after tonsillectomy, pre- and postoperation attendances are essential.

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