Insulin secretion in monosodium glutamate (MSG) obese rats submitted to aerobic exercise training

Detalhes bibliográficos
Autor(a) principal: De Souza, Claudio Teodoro [UNESP]
Data de Publicação: 2003
Outros Autores: Nunes, Wilton Marlindo Santana [UNESP], Gobatto, Claudio Alexandre [UNESP], De Mello, Maria Alice Rostom [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://www.physiologicalchemistryandphysics.com/pdf/PCP35-1.pdf
http://hdl.handle.net/11449/67556
Resumo: The present study was designed to evaluate the effects of aerobic exercise training on glucose tolerance and insulin secretion of obese male Wistar rats (monosodium glutamate [MSG] administration, 4mg/g-body weight, each other day, from birth to the 14th day). Fourteen weeks after the drug administration, the rats were separated into two groups: MSG-S (sedentary) and MSG-T (T = swimming, 1 h/day, 5 days/week, with an overload of 5% body weight for 10 weeks). Rats of the same age and strain injected with saline were used as control (C) and subdivided into two groups: C-S and C-T. Insulin and glucose responses during an oral glucose tolerance test (GTT) were evaluated by the estimation of the total areas under serum insulin (AI) and glucose (AG) curves. Glucose-induced insulin secretion by isolated pancreatic islets was also evaluated. MSG-S rats showed higher AI than C-rats while MSG-T rats presented lower AI than MSG-S rats. No differences in AG were observed among the 4 groups. Pancreatic islets from MSG-rats showed higher insulin secretion in response to low (2.8) and moderate (8.3 mM) concentrations of glucose than those from their control counterparts and no differences were observed between MSG-S and MSG-T rats. These results provide evidences that the hyperinsulinemia at low or moderate glucose concentrations observed in MSG-obese rats is, at least in part, a consequence of direct hypersecretion of the B cells and that chronic aerobic exercise is able to partially counteract the hyperinsulinemic state of these animals without disrupting glucose homeostasis.
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spelling Insulin secretion in monosodium glutamate (MSG) obese rats submitted to aerobic exercise trainingglucoseglutamate sodiuminsulinsodium chlorideaerobic metabolismage distributionanimal cellanimal experimentanimal tissueB lymphocytebody weightcontrolled studyexercisefemaleglucose homeostasisglucose toleranceinsulin blood levelinsulin releaseinsulin responsemalenonhumanobesityoral glucose tolerance testpancreas isletphysical activityratstrain differenceswimmingAnimalsBlood GlucoseBody WeightFatsFemaleGlucoseGlucose Tolerance TestInsulinLactic AcidMaleObesityPancreasPhysical Conditioning, AnimalRatsRats, WistarSodium GlutamateAnimaliaRattus norvegicusThe present study was designed to evaluate the effects of aerobic exercise training on glucose tolerance and insulin secretion of obese male Wistar rats (monosodium glutamate [MSG] administration, 4mg/g-body weight, each other day, from birth to the 14th day). Fourteen weeks after the drug administration, the rats were separated into two groups: MSG-S (sedentary) and MSG-T (T = swimming, 1 h/day, 5 days/week, with an overload of 5% body weight for 10 weeks). Rats of the same age and strain injected with saline were used as control (C) and subdivided into two groups: C-S and C-T. Insulin and glucose responses during an oral glucose tolerance test (GTT) were evaluated by the estimation of the total areas under serum insulin (AI) and glucose (AG) curves. Glucose-induced insulin secretion by isolated pancreatic islets was also evaluated. MSG-S rats showed higher AI than C-rats while MSG-T rats presented lower AI than MSG-S rats. No differences in AG were observed among the 4 groups. Pancreatic islets from MSG-rats showed higher insulin secretion in response to low (2.8) and moderate (8.3 mM) concentrations of glucose than those from their control counterparts and no differences were observed between MSG-S and MSG-T rats. These results provide evidences that the hyperinsulinemia at low or moderate glucose concentrations observed in MSG-obese rats is, at least in part, a consequence of direct hypersecretion of the B cells and that chronic aerobic exercise is able to partially counteract the hyperinsulinemic state of these animals without disrupting glucose homeostasis.Depto. de Educ. Física Instituto de Biociências Universidade Estadual Paulista, 13506-900 Rio Claro, SPDepto. de Educ. Física Instituto de Biociências Universidade Estadual Paulista, 13506-900 Rio Claro, SPUniversidade Estadual Paulista (Unesp)De Souza, Claudio Teodoro [UNESP]Nunes, Wilton Marlindo Santana [UNESP]Gobatto, Claudio Alexandre [UNESP]De Mello, Maria Alice Rostom [UNESP]2014-05-27T11:20:59Z2014-05-27T11:20:59Z2003-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article43-53http://www.physiologicalchemistryandphysics.com/pdf/PCP35-1.pdfPhysiological Chemistry and Physics and Medical NMR, v. 35, n. 1, p. 43-53, 2003.0748-6642http://hdl.handle.net/11449/675562-s2.0-2442581044Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysiological Chemistry and Physics and Medical NMR0,126info:eu-repo/semantics/openAccess2021-10-22T18:27:00Zoai:repositorio.unesp.br:11449/67556Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T18:27Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Insulin secretion in monosodium glutamate (MSG) obese rats submitted to aerobic exercise training
title Insulin secretion in monosodium glutamate (MSG) obese rats submitted to aerobic exercise training
spellingShingle Insulin secretion in monosodium glutamate (MSG) obese rats submitted to aerobic exercise training
De Souza, Claudio Teodoro [UNESP]
glucose
glutamate sodium
insulin
sodium chloride
aerobic metabolism
age distribution
animal cell
animal experiment
animal tissue
B lymphocyte
body weight
controlled study
exercise
female
glucose homeostasis
glucose tolerance
insulin blood level
insulin release
insulin response
male
nonhuman
obesity
oral glucose tolerance test
pancreas islet
physical activity
rat
strain difference
swimming
Animals
Blood Glucose
Body Weight
Fats
Female
Glucose
Glucose Tolerance Test
Insulin
Lactic Acid
Male
Obesity
Pancreas
Physical Conditioning, Animal
Rats
Rats, Wistar
Sodium Glutamate
Animalia
Rattus norvegicus
title_short Insulin secretion in monosodium glutamate (MSG) obese rats submitted to aerobic exercise training
title_full Insulin secretion in monosodium glutamate (MSG) obese rats submitted to aerobic exercise training
title_fullStr Insulin secretion in monosodium glutamate (MSG) obese rats submitted to aerobic exercise training
title_full_unstemmed Insulin secretion in monosodium glutamate (MSG) obese rats submitted to aerobic exercise training
title_sort Insulin secretion in monosodium glutamate (MSG) obese rats submitted to aerobic exercise training
author De Souza, Claudio Teodoro [UNESP]
author_facet De Souza, Claudio Teodoro [UNESP]
Nunes, Wilton Marlindo Santana [UNESP]
Gobatto, Claudio Alexandre [UNESP]
De Mello, Maria Alice Rostom [UNESP]
author_role author
author2 Nunes, Wilton Marlindo Santana [UNESP]
Gobatto, Claudio Alexandre [UNESP]
De Mello, Maria Alice Rostom [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv De Souza, Claudio Teodoro [UNESP]
Nunes, Wilton Marlindo Santana [UNESP]
Gobatto, Claudio Alexandre [UNESP]
De Mello, Maria Alice Rostom [UNESP]
dc.subject.por.fl_str_mv glucose
glutamate sodium
insulin
sodium chloride
aerobic metabolism
age distribution
animal cell
animal experiment
animal tissue
B lymphocyte
body weight
controlled study
exercise
female
glucose homeostasis
glucose tolerance
insulin blood level
insulin release
insulin response
male
nonhuman
obesity
oral glucose tolerance test
pancreas islet
physical activity
rat
strain difference
swimming
Animals
Blood Glucose
Body Weight
Fats
Female
Glucose
Glucose Tolerance Test
Insulin
Lactic Acid
Male
Obesity
Pancreas
Physical Conditioning, Animal
Rats
Rats, Wistar
Sodium Glutamate
Animalia
Rattus norvegicus
topic glucose
glutamate sodium
insulin
sodium chloride
aerobic metabolism
age distribution
animal cell
animal experiment
animal tissue
B lymphocyte
body weight
controlled study
exercise
female
glucose homeostasis
glucose tolerance
insulin blood level
insulin release
insulin response
male
nonhuman
obesity
oral glucose tolerance test
pancreas islet
physical activity
rat
strain difference
swimming
Animals
Blood Glucose
Body Weight
Fats
Female
Glucose
Glucose Tolerance Test
Insulin
Lactic Acid
Male
Obesity
Pancreas
Physical Conditioning, Animal
Rats
Rats, Wistar
Sodium Glutamate
Animalia
Rattus norvegicus
description The present study was designed to evaluate the effects of aerobic exercise training on glucose tolerance and insulin secretion of obese male Wistar rats (monosodium glutamate [MSG] administration, 4mg/g-body weight, each other day, from birth to the 14th day). Fourteen weeks after the drug administration, the rats were separated into two groups: MSG-S (sedentary) and MSG-T (T = swimming, 1 h/day, 5 days/week, with an overload of 5% body weight for 10 weeks). Rats of the same age and strain injected with saline were used as control (C) and subdivided into two groups: C-S and C-T. Insulin and glucose responses during an oral glucose tolerance test (GTT) were evaluated by the estimation of the total areas under serum insulin (AI) and glucose (AG) curves. Glucose-induced insulin secretion by isolated pancreatic islets was also evaluated. MSG-S rats showed higher AI than C-rats while MSG-T rats presented lower AI than MSG-S rats. No differences in AG were observed among the 4 groups. Pancreatic islets from MSG-rats showed higher insulin secretion in response to low (2.8) and moderate (8.3 mM) concentrations of glucose than those from their control counterparts and no differences were observed between MSG-S and MSG-T rats. These results provide evidences that the hyperinsulinemia at low or moderate glucose concentrations observed in MSG-obese rats is, at least in part, a consequence of direct hypersecretion of the B cells and that chronic aerobic exercise is able to partially counteract the hyperinsulinemic state of these animals without disrupting glucose homeostasis.
publishDate 2003
dc.date.none.fl_str_mv 2003-12-01
2014-05-27T11:20:59Z
2014-05-27T11:20:59Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.physiologicalchemistryandphysics.com/pdf/PCP35-1.pdf
Physiological Chemistry and Physics and Medical NMR, v. 35, n. 1, p. 43-53, 2003.
0748-6642
http://hdl.handle.net/11449/67556
2-s2.0-2442581044
url http://www.physiologicalchemistryandphysics.com/pdf/PCP35-1.pdf
http://hdl.handle.net/11449/67556
identifier_str_mv Physiological Chemistry and Physics and Medical NMR, v. 35, n. 1, p. 43-53, 2003.
0748-6642
2-s2.0-2442581044
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Physiological Chemistry and Physics and Medical NMR
0,126
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 43-53
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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