scholarly journals Blood Glukose Response of Giant Gouramy (Osphronemus gaouramy, Lac.) to the Stress of Environmental Temperature Changes

2007 ◽  
Vol 2 (2) ◽  
pp. 73 ◽  
Author(s):  
S. Hastuti ◽  
Eddy Supriyono ◽  
Ing Mokoginta ◽  
. Subandiyono
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Environmental Temperature ◽  
Environmental Changes ◽  
Glucose Response ◽  
Temperature Changes ◽  
Stress Effects ◽  
Response To Temperature ◽  
Post Stress

<p>This experiment was conducted to investigate blood glucose performance of giant gouramy <em>(Osphronemus gouramy, </em>Lac.) to environmental changes. Fish with body weight of about 52,15 g was used in the experiment. A hundred and twenty fish were subjected to stress by moving them to another aquarium containing cooler water for 5 minute before put them back to the origin aquarium. The stress treatments were Δ 0°C (A), Δ-3°C (B), Δ-6°C(C), and Δ-9°C(D). Blood glucose was measured at 0, 1, 2, 3, 4 and 5 hours post stress, each for 5 fish. During stress treatment, the survival offish were recorded. To study the role of insulin activation on reducing the stress effects, thirty fish were injected with insulin 2 IU/100 g body weight before subjected them to stressar. Blood glucose level of fish subjected to temperature stress of Δ-9°C was the greatest. The blood glucose response to temperature changes was linear, Y = 4,4543 X + 35,553 with R2 = 0,09976. The survival rate of fish was 100% for all treatments. Injected of insulin 2 IU/100 g body weight was able to reduce hyperglycemia that caused by stress.</p> <p>Key words: Blood glucose, giant gouramy, <em>Osphronemus gouramy, </em>stress</p> <p> </p> <p>ABSTRAK</p> <p>Penelitian ini dilakukan dengan tujuan untuk mengetahui performa glukosa darah ikan gurami <em>(Osphronemus gouramy, </em>Lac.) dalam merespon perubahan suhu lingkungan. Ikan berbobot rata-rata 52,15 g sebanyak 120 ekor diberi stres dengan cara diangkat dan dipindahkan ke suatu wadah yang bersuhu lebih dingin selama 5 menit dan dikembalikan lagi ke wadah mula-mula. Perlakuan stres perubahan suhu dingin tersebut adalah A (Δ 0°C), B (Δ- 3°C), C (Δ-6°C) dan D (Δ-9°C). Glukosa darah diukur dari 5 ekor ikan pada jam ke 0, 1, 2, 3, 4 dan 5 jam pascastres. Kelangsungan hidup dihitung pada saat perlakuan stres. Untuk melihat peran aktivasi insulin dalam menekan efek stres, ikan sebanyak 30 ekor diinjeksi insulin 2 iu/100 g bobot badan sebelum diberi stres. Kadar glukosa darah ikan gurame yang diberi stres perubahan suhu dingin sebesar Δ-9°C mengalami peningkatan paling besar. Respon glukosa darah terhadap stres perubahan suhu tersebut berpola linier Y= 4,4543 X + 35,553, dengan R2 = 0,9976. Perlakuan tersebut menghasilkan kelangsungan hidup yang sama yaitu 100%. Injeksi insulin 2 IU/100 g bobot badan mampu menekan hiperglisemia akibat stres.</p> Kata kunci: Glukosa darah, ikan gurami, <em>Osphronemus gouramy, </em>stres

Hypoglycemic Effect of High Environmental Temperature on Dogs

1957 ◽  
Vol 188 (3) ◽  
pp. 443-446 ◽  
Author(s):  
G. S. Kanter
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Rectal Temperature ◽  
Glucose Concentration ◽  
Whole Blood ◽  
Environmental Temperature ◽  
Experimental Conditions ◽  
High Environmental Temperature ◽  
Weight One ◽  
Low Humidity

Exposure of unanesthetized dogs to high environmental temperature (120°F) and low humidity (< 20%) for 4 hours with no water available for drinking, results in a fall in both whole blood and plasma glucose concentration in spite of the dehydration which also occurs. In one group of dogs so tested the whole blood glucose fell 22%, in another group it fell 16%. The average dehydration was –6% body weight. One would expect such a concomitant dehydration to cause an increase in glucose concentration, much as has been reported in man. Under the experimental conditions imposed, a hypoglycemia resulted in dogs. The hypoglycemia is apparently associated with high temperature for when the animals were exposed to heat the glucose fell and the rectal temperature increased, when they were removed from heat and allowed to recover, the rectal temperature fell and the glucose returned towards normal. The fall in glucose is metabolic in nature for no evidence of any glycosuria was found.

Capsaicin-sensitive nerves are required for glucostasis but not for catecholamine output during hypoglycemia in rats

1990 ◽  
Vol 258 (1) ◽  
pp. E212-E219 ◽  
Author(s):  
X. F. Zhou ◽  
K. H. Jhamandas ◽  
B. G. Livett
Keyword(s):  
Blood Glucose ◽  
Somatostatin Analogue ◽  
Plasma Epinephrine ◽  
Conscious Rat ◽  
Glucose Response ◽  
Conscious Rats ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Sensory Fibers

We have studied the glucose response and catecholamine (CA) response to insulin in the conscious rat to evaluate the role of sensory fibers in these responses in animals pretreated with capsaicin as neonates. In contrast to previous results obtained in anesthetized rats (Z. Khalil, B.G. Livett, and P.D. Marley. J. Physiol. Lond. 370: 201-215, 1986; Z. Khalil, B.G. Livett, and P.D. Marley. J. Physiol. Lond. 391: 511-526, 1987.), in conscious rats, insulin (1 IU/kg iv) produced only a mild hypoglycemia, which quickly returned to resting levels and caused no significant changes in plasma epinephrine levels. Somatostatin and SMS-(201-995), a somatostatin analogue, both potentiated and prolonged the insulin-induced hypoglycemia, resulting in an increase in circulating CA levels that was suppressed by hexamethonium and atropine. In capsaicin-pretreated rats the blood glucose levels at 90 min after insulin were significantly lower than those in vehicle-pretreated rats both in the presence (1 IU/kg insulin, 48 +/- 6 vs. 92 +/- 6 mg/100 ml, P less than 0.01) and absence (10 IU/kg insulin, 38 +/- 4 vs. 51 +/- 2 mg/100 ml, P less than 0.01) of SMS-(201-995). The CA levels in capsaicin-pretreated rats at 90 min after insulin were higher than in vehicle-pretreated rats (epinephrine levels: 27 +/- 4 vs. 10 +/- 1 pmol/ml in 1 IU/kg insulin, P less than 0.01; 64 +/- 14 vs. 25 +/- 5 pmol/ml in 10 IU/kg insulin, P less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)

scholarly journals The Role of Serum Alpha-Amylase and Glycogen Synthase in the Anti-Diabetic Potential of Terminalia catappa Aqueous Leaf Extract in Diabetic Wistar Rats

2019 ◽  
pp. 1-11
Author(s):  
Ezekiel E. Ben ◽  
Asuquo E. Asuquo ◽  
D. U. Owu
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Wistar Rats ◽  
Leaf Extract ◽  
Glycogen Synthase ◽  
Alpha Amylase ◽  
Distilled Water ◽  
Terminalia Catappa ◽  
Aqueous Leaf Extract

Background: The endocrinal abnormalities in diabetes mellitus as one of the numerous metabolic disorders is associated with derangement in exocrine functions of the pancreas and ultimately influences blood glucose regulation. Aim: The study was aimed at assessing the role of alpha-amylase and glycogen synthase in anti-diabetic potential of Terminalia catappa in diabetic rats.  Materials and Methods: Thirty five (35) Wistar rats were assigned to 5 groups of 7 animals each. Group 1 served as the control administered distilled water at 5ml/kg bodyweight and group 2 was a non diabetic group given orally, 130/kg body weight of aqueous leaf extract of Terminalia catappa.  Groups 3, 4 and 5 received a single dose of 150mg/kg body weight of alloxan solution intraperitoneally to induce diabetes and rats with blood glucose levels ≥200mg/dl after 72 hours were considered diabetic. This was followed by oral administration of 5ml/kg bodyweight of distilled water, 130mg/kg body weight of Terminalia catappa leaf extract orally and subcutaneous administration of insulin, 0.75U/kg body weight to groups 3 (diabetic), 4(diabetic + extract) and 5 (diabetic + insulin) respectively. Results: The results showed significant (P<.05) increase in serum level of alpha-amylase and glycogen synthase in both non-diabetic extract treated and diabetic groups when compared to control. But these enzymes significantly (P<.05) reduced in diabetic extract and insulin treated groups when compared to the diabetic group.  Conclusion: Therefore the hypoglycaemic potential of Terminalia catappa leaf extract could be attributed to its ability to reduce alpha-amylase level while lowered glycogen synthase might be secondary to reduction in blood glucose.

Ramet versus sporocarp production in the aquatic fern Salvinia auriculata (Salviniaceae): the role of shading

2018 ◽  
Vol 66 (7) ◽  
pp. 583
Author(s):  
Jessica Cristina Carvalho Medeiros ◽  
Josiane Carvalho Fonseca Silva ◽  
Tamiris da Silveira Campos Resende ◽  
Grazielle Sales Teodoro ◽  
Fabrício José Pereira ◽  
...  
Keyword(s):  
Environmental Changes ◽  
High Energy ◽  
Clonal Reproduction ◽  
Control Technique ◽  
Aquatic Fern ◽  
Stress Effects ◽  
Rapid Spread ◽  
Efficient Control ◽  
Plastic Responses

Aquatic plants exposed to environmental changes exhibit plastic responses, resulting in functional adjustments to reduce stress effects. Lack of light can limit plant development and can affect biomass allocation and reproduction, stressing plants and sometimes halting their growth. Shading techniques have been used to control the excessive growth of weed plants, such as the aquatic fern Salvinia auriculata Aublet that can form dense mats on the water surface, causing problems in water use. We used shading nets in a greenhouse experiment to evaluate the effect of shade on the biomass of S. auriculata, and to determine if the fern changes its allocation of biomass to sexual (sporocarps) or asexual (buds) reproduction under different shade levels (full-sun control, 35% shade, and 70% shade). Under shade conditions, ramet biomass decreased and no sporocarps were produced, although the number of buds increased. Production of structures for sexual reproduction incurs a high energy cost, so S. auriculata invested in bud production (clonal reproduction). The differing energy requirements resulted in a significant trade-off between bud and sporocarp production. In conclusion, our study indicated that shading is not an efficient control technique for S. auriculata since it did not affect the clonal reproduction, a strategy that accelerates colonisation and facilitates rapid spread.

scholarly journals Baselines representing blood glucose clearance improve in vitro prediction of the glycaemic impact of customarily consumed food quantities

2009 ◽  
Vol 103 (2) ◽  
pp. 295-305 ◽  
Author(s):  
John A. Monro ◽  
Suman Mishra ◽  
Bernard Venn
Keyword(s):  
Blood Glucose ◽  
Glucose Disposal ◽  
Glucose Response ◽  
Food Quantity ◽  
Glucose Clearance ◽  
The Difference ◽  
Dose Dependent

Glycaemic responses to foods reflect the balance between glucose loading into, and its clearance from, the blood. Current in vitro methods for glycaemic analysis do not take into account the key role of glucose disposal. The present study aimed to develop a food intake-sensitive method for measuring the glycaemic impact of food quantities usually consumed, as the difference between release of glucose equivalents (GGE) from food during in vitro digestion and a corresponding estimate of clearance of them from the blood. Five foods – white bread, fruit bread, muesli bar, mashed potato and chickpeas – were consumed on three occasions by twenty volunteers to provide blood glucose response (BGR) curves. GGE release during in vitro digestion of the foods was also plotted. Glucose disposal rates estimated from downward slopes of the BGR curves allowed GGE dose-dependent cumulative glucose disposal to be calculated. By subtracting cumulative glucose disposal from cumulative in vitro GGE release, accuracy in predicting the in vivo glycaemic effect from in vitro GGE values was greatly improved. GGEin vivo = 0·99GGEin vitro+0·75 (R2 0·88). Furthermore, the difference between the curves of cumulative GGE release and disposal closely mimicked in vivo incremental BGR curves. We conclude that valid measurement of the glycaemic impact of foods may be obtained in vitro, and expressed as grams of glucose equivalents per food quantity, by taking account not only of GGE release from food during in vitro digestion, but also of blood glucose clearance in response to the food quantity.

scholarly journals Role of Growth Hormone in Ghrelin’s Metabolic Actions

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. A553-A553
Author(s):  
Deepali Gupta ◽  
Salil Varshney ◽  
Kripa Shankar ◽  
Sherri Osborne-Lawrence ◽  
Nathan P Metzger ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Body Weight ◽  
Blood Glucose ◽  
Food Intake ◽  
Calorie Restriction ◽  
Gh Secretion ◽  
Gh Cells ◽  
Life Threatening ◽  
Plasma Gh

Abstract Objective: Ghrelin regulates eating, body weight, and blood glucose. Upon binding to its receptor (growth hormone secretagogue receptor; GHSR), administered ghrelin increases food intake, body weight, and blood glucose. In contrast, blocking ghrelin lowers body weight and food intake. Also, mice that lack ghrelin or GHSR develop life-threatening hypoglycemia when submitted to a prolonged caloric restriction protocol providing only 40% of usual daily calories. Although GHSR was first identified in the pituitary, ghrelin was first defined by its ability to stimulate GH secretion via GHSRs, GH replacement prevents hypoglycemia in ghrelin-KO mice undergoing prolonged caloric restriction, and GH is known to modulate body composition, relatively little attention has been devoted to the role of GH-secreting pituitary somatotrophs (“GH cells”) in ghrelin action. The objective here was to determine the requirement for GHSR-expressing GH cells in mediating ghrelin’s metabolic actions. Methods: Mice with GH cell-selective GHSR deletion were generated by crossing novel GH-IRES-Cre mice to novel floxed-GHSR mice. GH cell-selective GHSR knockout mice and three control littermate groups were studied. Plasma GH, food intake, and blood glucose were measured after ip or sc ghrelin administration. Blood glucose and plasma GH were measured over the course of a 15-d calorie restriction protocol providing only 40% of usual daily calories. Results: In mice with GH cell-selective GHSR deletion, ghrelin-induced GH secretion and food intake were attenuated (by 84.1% at 15 min and by 35.3% at 45 min, respectively) as compared to controls; ghrelin-induced blood glucose elevation was unchanged. Mice with GH cell-selective GHSR deletion exhibited an attenuated GH rise (by 76.8%) over the 15-d calorie restriction period, yet they nonetheless resisted life-threatening hypoglycemia which is observed in similarly-treated ghrelin-KO mice, GHSR-null mice, and mice with hepatocyte-selective GH receptor deletion. Conclusions: These results suggest that GH cell-expressed GHSRs are required for ghrelin’s acute orexigenic and GH secretory actions but are dispensable for ghrelin’s glucoregulatory actions, at least in the settings assessed here. Although GH cell-expressed GHSRs are required for the progressive GH elevations associated with prolonged calorie restriction, they are not required for ghrelin’s overall protective effects to block prolonged calorie restriction-associated hypoglycemia.

scholarly journals Cytoprotective Effects of Lepidium sativum Seed Extract on Liver and Pancreas of HFD/STZ Induced Type 2 Diabetic Mice

2017 ◽  
Vol 9 (4) ◽  
Author(s):  
Desai S. S. ◽  
Walvekar M. V. ◽  
Shaikh N. H.
Keyword(s):  
Body Weight ◽  
Blood Glucose ◽  
Type Ii Diabetes ◽  
Type Ii Diabetes Mellitus ◽  
Seed Extract ◽  
Lepidium Sativum ◽  
Type Ii ◽  
Diabetic Mice ◽  
Liver And Pancreas

Type II diabetes mellitus (TIIDM) is the world’s largest endocrine disorder. Obesity is one of the leading causes for type II diabetes. In the present study antihyperglycemic and cytoprotective role of Lepidium sativum seed extract (LSE) for obesity associated diabetes in normal and high fat diet (HFD)-streptozotocin induced mice was investigated. Blood glucose, histology of liver and pancreas and body weight in obese diabetic mice was evaluated. Administration of LSE for 28 days significantly lowered blood glucose while increased body weight and recovered degenerative changes in liver and pancreas. These findings suggest that LSE possess antihyperglycemic and cytoprotective action and might be a good candidate for obesity associated diabetes.

Abstract 397: HMOX1 Ameliorates Fatty Liver and Metabolic Syndrome by Reduction of Hepatic Heme and PGC1a

Hypertension ◽  
2013 ◽  
Vol 62 (suppl_1) ◽  
Author(s):  
Komal Sodhi ◽  
Wade G Douglas ◽  
Stephen J Peterson ◽  
Larry Dial ◽  
Imran T Khawaja ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Metabolic Syndrome ◽  
Body Weight ◽  
Blood Glucose ◽  
Fatty Liver ◽  
Obese Mice ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Lipid Droplet Size

Introduction: Nonalcoholic fatty liver (NAFLD) occurs in a setting of high fat diets, insulin resistance, obesity and dyslipidemia. Individuals with NAFLD have an increased risk of developing metabolic syndrome. Heme oxygenase-1 (HMOX1), a major cytoprotective enzyme, attenuates oxidative stress and obesity and increases insulin sensitivity. The antioxidant effect of HMOX1 is due to an increase in ferritin, and bilirubin and a decrease in heme, a pro-oxidant. The aim of this study was to examine the role of increased hepatic HMOX activity in decreasing steatosis, adiposity and vascular dysfunction and to determine the mechanism underlying these metabolic changes in obese mice. Methods: Obese mice were administered cobalt protoporphyrin (CoPP) and HMOX activity inhibitor stannous mesoporphyrin (SnMP) for 6 weeks. Blood pressure, body weight and blood glucose levels were measured in all the groups. Glycogen content, hepatic fibrosis, heme levels, fatty acid synthase (FAS) and lipid droplet size in liver were also assessed. Results: CoPP administration increased hepatic HMOX1 protein levels and HMOX activity, decreased blood pressure, body weight, blood glucose levels, hepatic heme content (p<0.05) as compared to obese mice. Our results also showed that HMOX1 induction causes a significant decrease in lipid steatosis ( lipid droplet size and FAS levels; p<0.01) as compared to obese mice. Densitometry analysis showed increased expression of PPARα and Glut 1 along with decreased expression of PGC1α in hepatic tissue. These beneficial effects were reversed by administration of SnMP. Conclusion: This novel study demonstrates the role of hepatic HMOX1 in attenuating the fatty liver and metabolic homeostasis by decreasing PGC1α and heme content and enhancing glycogen levels. Pharmacological agents that increase HMOX1 levels or gene targeting of HMOX1 offer a promising therapeutic target for NAFLD and suggest the existence of a significant link between the heme-HMOX system and the extent and severity of heme-dependent fatty liver.

scholarly journals Response of sweet cherry buds and twigs to temperature changes – evaluated by the determination of the degradation and synthesis of sucrose

2021 ◽  
Vol 48 (No. 4) ◽  
pp. 149-157
Author(s):  
Klaus-Peter Götz ◽  
Frank-M. Chmielewski
Keyword(s):  
Low Temperature ◽  
Sweet Cherry ◽  
Environmental Temperature ◽  
Tissue Response ◽  
Tree Physiology ◽  
Natural Conditions ◽  
Metabolite Level ◽  
Temperature Changes

This study was undertaken to determine the degradation and synthesis of sucrose (Suc) in sweet cherry buds and the twig tissue response to a sequence of environmental temperature changes (cold (orchard) – warm (controlled temperature of ∼22 °C) – cold (orchard)). The results of two years’ (2016, 2017) findings were compared with the buds of trees and the buds of twigs in November/December in northeast Germany. The Suc content in the buds of trees and the buds of twigs under natural conditions was stable. Temperatures of ∼22 °C resulted in a significant (Suc) degradation (62%, from 39 to 15 mg/g DW) in the buds of twigs after 21 days (day of the year (DOY) 340). The significant re-synthesis (66%, to 25 mg/g DW after 21 days, DOY 361) in the orchard is noteworthy, and highlights the Suc value as a cryoprotective saccharide. The marked changes in the Suc, glucose, and fructose contents of the twigs exposed to a cold-warm-cold sequence (&lt; DOY 319, DOY 319–340, DOY 340–361), lead to the conclusion that this adaptation is the result of tissue- and cold-specific sucrose invertases/synthases. The effect of low-temperature-active enzymes explains the role of Suc in the buds of trees during the winter rest. When using twigs for plant physiological examinations during the winter rest, results on a metabolite level should be considered when drawing conclusions concerning the overall tree physiology.

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