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1.
Biotechnol Bioeng ; 121(9): 2585-2603, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-38853643

RESUMO

The extensive use of chemical pesticides has significantly boosted agricultural food crop yields. Nevertheless, their excessive and unregulated application has resulted in food contamination and pollution in environmental, aquatic, and agricultural ecosystems. Consequently, the on-site monitoring of pesticide residues in agricultural practices is paramount to safeguard global food and conservational safety. Traditional pesticide detection methods are cumbersome and ill-suited for on-site pesticide finding. The systematic review provides an in-depth analysis of the current status and perspectives of nanobiosensors (NBS) for pesticide detection in the agricultural arena. Furthermore, the study encompasses the fundamental principles of NBS, the various transduction mechanisms employed, and their incorporation into on-site detection platforms. Conversely, the assortment of transduction mechanisms, including optical, electrochemical, and piezoelectric tactics, is deliberated in detail, emphasizing its advantages and limitations in pesticide perception. Incorporating NBS into on-site detection platforms confirms a vital feature of their pertinence. The evaluation reflects the integration of NBS into lab-on-a-chip systems, handheld devices, and wireless sensor networks, permitting real-time monitoring and data-driven decision-making in agronomic settings. The potential for robotics and automation in pesticide detection is also scrutinized, highlighting their role in improving competence and accuracy. Finally, this systematic review provides a complete understanding of the current landscape of NBS for on-site pesticide sensing. Consequently, we anticipate that this review offers valuable insights that could form the foundation for creating innovative NBS applicable in various fields such as materials science, nanoscience, food technology and environmental science.


Assuntos
Agricultura , Técnicas Biossensoriais , Praguicidas , Técnicas Biossensoriais/métodos , Técnicas Biossensoriais/instrumentação , Praguicidas/análise , Nanotecnologia/instrumentação , Resíduos de Praguicidas/análise , Monitoramento Ambiental/métodos , Monitoramento Ambiental/instrumentação
2.
Cell Biochem Funct ; 42(4): e4076, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38895919

RESUMO

Potassium bromate (KBrO3) is a common dietary additive, pharmaceutical ingredient, and significant by-product of water disinfection. p-coumaric acid (PCA) is a naturally occurring nutritional polyphenolic molecule with anti-inflammatory and antioxidant activities. The goal of the current investigation was to examine the protective effects of p-coumaric acid against the liver damage caused by KBrO3. The five groups of animals-control, KBrO3 (100 mg/kg bw), treatment with KBrO3 along with Silymarin (100 mg/kg bw), KBrO3, followed by PCA (100 mg/bw, and 200 mg/kg bw) were randomly assigned to the animals. Mice were slaughtered, and blood and liver tissues were taken for assessment of the serum biochemical analysis for markers of liver function (alanine transaminase, aspartate transaminase, alkaline phosphatase, albumin, and protein), lipid markers and antioxidant markers (TBARS), glutathione peroxidase [GSH-Px], glutathione (GSH), and markers of hepatic oxidative stress (CAT), (SOD), as well as histological H&E stain, immunohistochemical stain iNOS, and COX-2 as markers of inflammatory cytokines. PCA protects against acute liver failure by preventing the augmentation of blood biochemical markers and lipid profiles. In mice liver tissues, KBrO3 increases lipid indicators and depletes antioxidants, leading to an increase in JNK, ERK, and p38 phosphorylation. Additionally, PCA inhibited the production of pro-inflammatory cytokines and reduced the histological alterations in KBrO3-induced hepatotoxicity. Notably, PCA effectively mitigated KBrO3-induced hepatic damage by obstructing the TNF-α/NF-kB-mediated inflammatory process signaling system. Additionally, in KBrO3-induced mice, PCA increased the intensities of hepatic glutathione (GSH), SOD, GSH-Px, catalase, and GSH activities. Collectively, we demonstrate the molecular evidence that PCA eliminated cellular inflammatory conditions, mitochondrial oxidative stress, and the TNF-α/NF-κB signaling process, thereby preventing KBrO3-induced hepatocyte damage.


Assuntos
Bromatos , Ácidos Cumáricos , Fígado , Propionatos , Animais , Camundongos , Ácidos Cumáricos/farmacologia , Fígado/efeitos dos fármacos , Fígado/metabolismo , Fígado/patologia , Masculino , Estresse Oxidativo/efeitos dos fármacos , Doença Hepática Induzida por Substâncias e Drogas/metabolismo , Doença Hepática Induzida por Substâncias e Drogas/prevenção & controle , Doença Hepática Induzida por Substâncias e Drogas/patologia , Doença Hepática Induzida por Substâncias e Drogas/tratamento farmacológico , Antioxidantes/farmacologia , Antioxidantes/metabolismo , Substâncias Protetoras/farmacologia
3.
Cell Biochem Funct ; 41(7): 868-875, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37573567

RESUMO

In the present study, we investigated the effect of the p-Coumaric acid (PCA), a phenolic acid, on potassium bromate (KBrO3 ) induced oxidative damage, Ras/Raf/MEK signaling, and apoptosis in HepG2 cells. Our findings showed that PCA-treated cells prevented cytotoxicity compared with KBrO3- treated cells. Furthermore, KBrO3 -induced oxidative stress and lipid peroxidation was attenuated by PCA and it also increased the antioxidant levels such as SOD, CAT, and GPX. Additionally, PCA inhibited the KBrO3 -induced DNA damage in HepG2 cells. Moreover, PCA treatment suppressed the activation of Ras/Raf/MEK signaling and increased the expression of PRDX-1. In addition, PCA prevented the KBrO3 -induced apoptosis cascade by altering the expression of proapoptotic, Bax, caspase-3, and antiapoptotic, Bcl-2 proteins. The present study proves that PCA inhibited the KBrO3 -induced oxidative stress, DNA damage, and apoptotic signaling cascade in HepG2 cells.


Assuntos
Antioxidantes , Estresse Oxidativo , Humanos , Células Hep G2 , Antioxidantes/farmacologia , Apoptose , Quinases de Proteína Quinase Ativadas por Mitógeno/farmacologia
5.
Toxicol Mech Methods ; 29(3): 165-176, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30318971

RESUMO

Diabetes is a major noncommunicable life-threatening chronic and pervasive condition that is consuming the world health in a petrifying rate. The circulatory system is one of the major sources of hyperglycemia-induced ROS generation. Historically, garlic has been revered as part of a healthful diet. Organosulfur compounds have been attributed to the medicinal properties and health benefits of garlic. The present study focuses on the ameliorative role of allyl methyl sulfide (AMS) in combating diabetic complications in diabetic rats. Male Wistar rats were randomly divided into four groups. Experimental diabetes was induced by a single intraperitoneal injection (i.p), of streptozotocin (STZ) (40 mg/kg b.w). STZ treated diabetic rats showed significant augment in plasma glucose level, lipidperoxidative (LPO) markers, glycoprotein components (hexose, hexosamine, sialic acid, and fucose), and significant decline in plasma insulin level, nonenzymatic antioxidants and activities of antioxidant enzymes in the circulatory system and tissues. Further, periodic acid-Schiff (PAS) staining of hepatic and renal tissues revealed positive stain accumulation and Western blot investigation of glucose transporter 2 (GLUT 2) in pancreas of STZ-induced hyperglycemic rats. Dietary intervention with AMS (100 mg/kg b.w) for 30 days demonstrated significant protective effects on all the biochemical parameters studied. Besides, biochemical findings were corroborated by histological exertion and Western blot study. The findings of current investigations recommended that AMS can ameliorate the consequences of diabetes due to their antioxidant efficacy and can be used as a potential therapeutic approach. Further studies are warranted to explore the clinical application of AMS.


Assuntos
Compostos Alílicos/uso terapêutico , Antioxidantes/metabolismo , Diabetes Mellitus Experimental/tratamento farmacológico , Alho/química , Glicoproteínas/metabolismo , Hipoglicemiantes/uso terapêutico , Estresse Oxidativo/efeitos dos fármacos , Sulfetos/uso terapêutico , Compostos Alílicos/isolamento & purificação , Animais , Glicemia/análise , Diabetes Mellitus Experimental/sangue , Diabetes Mellitus Experimental/enzimologia , Hipoglicemiantes/isolamento & purificação , Insulina/sangue , Masculino , Ratos Wistar , Sulfetos/isolamento & purificação
6.
Biomed Pharmacother ; 107: 292-302, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30098547

RESUMO

Therapeutic approaches based on dietary compounds obtained from food products to handle diabetes involving oxidative stress and inflammation. Garlic is a common spice and has a long history as a folk remedy. Allyl methyl sulfide (AMS) is a potential garlic-derived organosulfur compound displaying a substantial range of optimistic actions in various diseases. Herein, we investigated the potential role of AMS in ameliorating the effects of oxidative stress and inflammation in the liver of streptozotocin (STZ)-induced experimental rats. Diabetes was induced by single intraperitoneal (i.p.) injection of STZ (40 mg/kg/b.w). STZ-induced hyperglycemic rats received daily intragastric doses of 50, 100 and 200 mg/kg/b.w of the AMS for 30 days. Dietary intervention of AMS (100 mg/kg b.w) resulted in significant attenuation in blood glucose and expression of pro-inflammatory markers TNF-α, IL-6, NF-κB p65 unit and significant elevation in the plasma insulin level. Moreover, AMS instigated a marked enhance in the levels of hepatic tissue non enzymatic antioxidants and the activities enzymatic antioxidants of diabetic rats with significant decline in lipid peroxides and hydroperoxides formation, serum biomarkers of liver damage, thus representing the protecting efficacy of AMS in hyperglycemic state. The pathological abnormalities in hepatic tissues of diabetic rats were significantly ameliorated by AMS supplementation and offered great support to the biochemical findings. These conclusions explicate the prospective use of AMS as a promising compound against glucotoxicity mediated hepatic oxidative dysfunction in rats. Clinical trials in validating this benefit for optimizing the AMS nutrition are however warranted.


Assuntos
Compostos Alílicos/uso terapêutico , Diabetes Mellitus Experimental/tratamento farmacológico , Diabetes Mellitus Experimental/patologia , Hiperglicemia/tratamento farmacológico , Hiperglicemia/patologia , Inflamação/patologia , Estresse Oxidativo , Sulfetos/uso terapêutico , Compostos Alílicos/farmacologia , Animais , Antioxidantes/metabolismo , Biomarcadores/metabolismo , Glicemia/metabolismo , Peso Corporal/efeitos dos fármacos , Citocinas/metabolismo , Diabetes Mellitus Experimental/sangue , Ingestão de Líquidos , Comportamento Alimentar/efeitos dos fármacos , Hiperglicemia/sangue , Insulina/sangue , Peróxidos Lipídicos/metabolismo , Masculino , Tamanho do Órgão/efeitos dos fármacos , Estresse Oxidativo/efeitos dos fármacos , Ratos Wistar , Estreptozocina , Sulfetos/farmacologia
7.
Toxicol Mech Methods ; 28(7): 547-554, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29708459

RESUMO

This study hypothesized to evaluate the effect of betanin, a chromoalkaloid on plasma and altered tissues glycoprotein components in streptozotocin-nicotinamide-induced diabetic rats. Diabetes was induced by a single intraperitoneal (i.p.) injection of streptozotocin (45 mg/kg b.w.) dissolved in 0.1 M citrate buffer (pH 4.5) 15 min after the i.p. administration of nicotinamide (110 mg/kg b.w.). Experimental rats were administered betanin at the dose of 20 mg/kg b.w. and glibenclamide (600 µg/kg b.w.) once a day for 30 days. Diabetic rats revealed significant (p < 0.05) increase in the levels of glucose, HbA1C, hexose, hexosamine, sialic acid and fucose in the plasma; decrease in the levels of plasma insulin, Hb and sialic acid in the liver and kidney; significant (p < 0.05) increase in hexose, hexosamine and fucose in the liver and kidney. Moreover, periodic acid-Schiff staining of tissues revealed positive-stain accumulation in diabetic rats. On co-supplementation of betanin and glibenclamide to diabetic rats for the period of 30 days brought back the levels of plasma and tissues glycoprotein components. Based on the present study, we propose that betanin possesses significant protective effect on glycoprotein components in plasma and tissue of diabetic rats.


Assuntos
Betacianinas/uso terapêutico , Diabetes Mellitus Experimental/terapia , Suplementos Nutricionais , Hipoglicemiantes/uso terapêutico , Rim/metabolismo , Fígado/metabolismo , Pâncreas/metabolismo , Animais , Betacianinas/efeitos adversos , Biomarcadores/sangue , Biomarcadores/metabolismo , Peso Corporal/efeitos dos fármacos , Terapia Combinada/efeitos adversos , Diabetes Mellitus Experimental/tratamento farmacológico , Diabetes Mellitus Experimental/metabolismo , Diabetes Mellitus Experimental/patologia , Glibureto/uso terapêutico , Glicoproteínas/sangue , Glicoproteínas/metabolismo , Hiperglicemia/prevenção & controle , Hipoglicemiantes/efeitos adversos , Rim/efeitos dos fármacos , Rim/patologia , Fígado/efeitos dos fármacos , Fígado/patologia , Masculino , Niacinamida/intoxicação , Especificidade de Órgãos , Pâncreas/efeitos dos fármacos , Pâncreas/patologia , Distribuição Aleatória , Ratos Wistar , Estreptozocina/toxicidade
8.
Biomed Pharmacother ; 92: 229-239, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28549291

RESUMO

The phytochemical, menthol, has been reported to play many beneficial roles. However, under diabetic conditions, there is no detail mechanism of its beneficial action in the glucose homeostasis. The present study, we investigated to explore the role of menthol, on the glucose metabolic enzymes and pancreatic islet cell apoptosis of streptozotocin-nicotinamide (STZ-NA) induced diabetes in rats. Diabetes was induced by single intraperitoneal (i.p.) injection of STZ (50mg/kg/b.w.) and NA (110mg/kg/b.w.). Diabetic rats were treated with different dose of menthol (25, 50, and 100mg/kg/b.w.) and glibenclamide (600µg/kg/b.w.) daily for 45 days. The result of our study shows that menthol significantly reduced the blood glucose and glycosylated hemoglobin levels and significantly increased the total hemoglobin, plasma insulin and liver glycogen levels in diabetic rats. The altered activities of hepatic glucose metabolic enzymes, serum biomarkers of liver damage were restored to near normal. The pathological abnormalities in hepatic and pancreatic islets of diabetic rats were significantly ameliorated by menthol intervention. These effects were mediated by suppressing pancreatic ß-cells apoptosis and were associated with increased anti-apoptotic Bcl-2 expression and reduced pro-apoptotic Bax expression. Findings from the current study consent us to conclude that menthol alleviates STZ-NA-induced hyperglycemia via modulating glucose metabolizing enzymes, suppression of pancreatic ß-cells apoptosis and altered hepatic, pancreatic morphology. This exclusivity and dearth of any noticeable adverse efficacy proposes the opportunity of using this monoterpene as an efficient adjuvant in the management diabetes mellitus.


Assuntos
Apoptose/efeitos dos fármacos , Glicemia/efeitos dos fármacos , Diabetes Mellitus Experimental/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Células Secretoras de Insulina/efeitos dos fármacos , Mentol/uso terapêutico , Animais , Apoptose/fisiologia , Glicemia/metabolismo , Diabetes Mellitus Experimental/sangue , Diabetes Mellitus Experimental/induzido quimicamente , Glucose/metabolismo , Homeostase/efeitos dos fármacos , Homeostase/fisiologia , Hipoglicemiantes/farmacologia , Células Secretoras de Insulina/metabolismo , Masculino , Mentol/farmacologia , Niacinamida/toxicidade , Ratos , Ratos Wistar , Estreptozocina/toxicidade , Resultado do Tratamento
9.
Pharm Biol ; 55(1): 1442-1449, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28330423

RESUMO

CONTEXT: Geraniol, an acyclic monoterpene alcohol is found in medicinal plants, is used traditionally for several medical purposes including diabetes. OBJECTIVES: The present study evaluates the antihyperglycemic potential of geraniol on key enzymes of carbohydrate metabolism in streptozotocin (STZ)-induced diabetic rats. MATERIALS AND METHODS: Diabetes was induced in experimental rats, by a single intraperitoneal (i.p) injection of STZ [40 mg/kg body weight (b.w.)]. Different doses of geraniol (100, 200 and 400 mg/kg b.w.) and glyclazide (5 mg/kg b.w.) were administrated orally to diabetic rats for 45 days. Body weight, food intake, plasma glucose, insulin, blood haemoglobin (Hb), glycosylated haemoglobin (HbA1c), hepatic glucose metabolic enzymes and glycogen were examined. RESULTS: The LD50 value of geraniol is 3600 mg/kg b.w. at oral administration in rats. Administration of geraniol in a dose-dependent manner (100, 200, 400 mg/kg b.w.) and glyclazide (5 mg/kg b.w.) for 45 days significantly improved the levels of insulin, Hb and decreased plasma glucose, HbA1C in diabetic-treated rats. Geraniol at its effective dose (200 mg/kg b.w.) ameliorated the altered activities of carbohydrate metabolic enzymes near normal effects compared with two other doses (100 and 400 mg/kg b.w.). Geraniol treatment to diabetic rats improved hepatic glycogen content suggesting its anti-hyperglycemic potential. Geraniol supplement was found to preserve the normal histological appearance of hepatic cells and pancreatic ß-cells in diabetic rats. DISCUSSION AND CONCLUSIONS: The present findings suggest that geraniol can potentially ameliorate key enzymes of glucose metabolism in experimental diabetes even though clinical studies used to evaluate this possibility are warranted.


Assuntos
Glicemia/efeitos dos fármacos , Diabetes Mellitus Experimental/tratamento farmacológico , Hipoglicemiantes/farmacologia , Rim/efeitos dos fármacos , Fígado/efeitos dos fármacos , Estreptozocina , Terpenos/farmacologia , Monoterpenos Acíclicos , Animais , Biomarcadores/sangue , Glicemia/metabolismo , Diabetes Mellitus Experimental/sangue , Diabetes Mellitus Experimental/induzido quimicamente , Diabetes Mellitus Experimental/enzimologia , Relação Dose-Resposta a Droga , Frutose-Bifosfatase/metabolismo , Teste de Tolerância a Glucose , Glucose-6-Fosfatase/metabolismo , Glucosefosfato Desidrogenase/metabolismo , Hemoglobinas Glicadas/metabolismo , Hexoquinase/metabolismo , Hipoglicemiantes/toxicidade , Insulina/sangue , Rim/enzimologia , Dose Letal Mediana , Fígado/enzimologia , Masculino , Pâncreas/efeitos dos fármacos , Pâncreas/patologia , Ratos Wistar , Terpenos/toxicidade , Fatores de Tempo
10.
Biomed Pharmacother ; 84: 1558-1567, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-27876337

RESUMO

Diabetes mellitus is a common metabolic/endocrine disorder characterized by inadequate control of carbohydrate metabolism and causes serious health issues. This study evaluates the effect of carvone, a novel monoterpene ketone, on carbohydrate metabolic enzymes in the liver of normal and streptozotocin (STZ)-induced diabetic rats. Diabetes was induced by a single intraperitoneal injection of STZ (40mg/kg b.w). STZ intoxication led to a significant increase in the levels of plasma glucose, glycosylated hemoglobin (HbA1c) and decrease in the levels of insulin and hemoglobin (Hb). The activities of carbohydrate metabolic enzymes, glycogen, enzymatic antioxidants in pancreas and hepatic markers content were also altered. The daily oral administration of carvone (50mg/kg b.w) to diabetic rats for 30days resulted a significant decline in the levels of plasma glucose, HbA1c and significant improve in the levels of Hb and insulin. The reversed activities of carbohydrate metabolic enzymes, enzymic antioxidants and hepatic marker enzymes in diabetic rats were renovated to near normal level by the administration of carvone. The obtained results were compared with glyclazide, a standard oral hypoglycemia drug. Histopathological analysis of liver and pancreas and immunohistochemistry of pancreas revealed that treatment with carvone reduced the STZ-induced damage to hepatic and ß-cells of the pancreas. From our results, carvone regulates carbohydrate metabolism by ameliorating the key enzymes in the hepatic tissues of STZ-induced diabetic rats however further studies and safety studies are needed to validate the effects of carvone.


Assuntos
Metabolismo dos Carboidratos , Diabetes Mellitus Experimental/tratamento farmacológico , Diabetes Mellitus Experimental/enzimologia , Hiperglicemia/tratamento farmacológico , Hiperglicemia/enzimologia , Monoterpenos/uso terapêutico , Animais , Antioxidantes/metabolismo , Biomarcadores/metabolismo , Glicemia/metabolismo , Peso Corporal/efeitos dos fármacos , Metabolismo dos Carboidratos/efeitos dos fármacos , Monoterpenos Cicloexânicos , Diabetes Mellitus Experimental/sangue , Diabetes Mellitus Experimental/complicações , Comportamento de Ingestão de Líquido/efeitos dos fármacos , Comportamento Alimentar/efeitos dos fármacos , Hemoglobinas Glicadas/metabolismo , Glicogênio/metabolismo , Hiperglicemia/sangue , Hiperglicemia/complicações , Imuno-Histoquímica , Insulina/sangue , Fígado/efeitos dos fármacos , Fígado/enzimologia , Fígado/patologia , Masculino , Monoterpenos/administração & dosagem , Monoterpenos/farmacologia , Pâncreas/efeitos dos fármacos , Pâncreas/enzimologia , Pâncreas/patologia , Ratos Wistar , Estreptozocina
11.
Chem Biol Interact ; 250: 38-46, 2016 Apr 25.
Artigo em Inglês | MEDLINE | ID: mdl-26944432

RESUMO

Diabetes mellitus is a clinically complex disease characterized by chronic hyperglycemia with metabolic disturbances. During diabetes, endogenous hepatic glucose production is increased as a result of impaired activities of the key enzymes of carbohydrate metabolism. The purpose of the present study was to evaluate the antidiabetic efficacy of citronellol, a citrus monoterpene in streptozotocin (STZ)-induced diabetic rats. Diabetes mellitus was induced by a single intraperitoneal injection of STZ (40 mg/kg b.w). STZ induced diabetic rats received citronellol orally at the doses of 25, 50, and 100 mg/kg b.w for 30 days. In this study the levels of plasma glucose, insulin, hemoglobin (Hb), glycated hemoglobin (HbA1C), glycogen, and the activities of carbohydrate metabolic enzymes, liver and kidney markers were evaluated. Oral administration of citronellol (50 mg/kg) for 30 days dose dependently improved the levels of insulin, Hb and hepatic glycogen with significant decrease in glucose and HbA1C levels. The altered activities of carbohydrate metabolic enzymes, hepatic and kidney markers were restored to near normal. Citronellol supplement was found to be effective in preserving the normal histological appearance of hepatic cells and insulin-positive ß-cells in STZ-rats. Our results suggest that administration of citronellol attenuates the hyperglycemia in the STZ-induced diabetic rats by ameliorating the key carbohydrate metabolic enzymes and could be developed as a functional and nutraceutical ingredient in combating diabetes mellitus.


Assuntos
Metabolismo dos Carboidratos/efeitos dos fármacos , Diabetes Mellitus Experimental/tratamento farmacológico , Diabetes Mellitus Experimental/enzimologia , Hipoglicemiantes/uso terapêutico , Rim/enzimologia , Fígado/enzimologia , Monoterpenos/uso terapêutico , Monoterpenos Acíclicos , Animais , Glicemia/análise , Glicemia/metabolismo , Citrus/química , Diabetes Mellitus Experimental/sangue , Diabetes Mellitus Experimental/metabolismo , Glucose/metabolismo , Hipoglicemiantes/química , Insulina/sangue , Insulina/metabolismo , Rim/efeitos dos fármacos , Rim/metabolismo , Fígado/efeitos dos fármacos , Fígado/metabolismo , Masculino , Monoterpenos/química , Ratos , Ratos Wistar , Estreptozocina
12.
Mol Cell Biochem ; 385(1-2): 159-68, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24078031

RESUMO

Epidemiological studies have demonstrated that diabetes mellitus is a serious health burden for both governments and healthcare providers. This study was hypothesized to evaluate the antihyperglycemic potential of eugenol by determine the activities of key enzymes of glucose metabolism in streptozotocin (STZ)-induced diabetic rats. Diabetes was induced into male albino Wistar rats by intraperitoneal administration of STZ (40 mg/kg body weight (b.w.)). Eugenol was administered to diabetic rats intragastrically at 2.5, 5, and 10 mg/kg b.w. for 30 days. The dose 10 mg/kg b.w. significantly reduced the levels of blood glucose and glycosylated hemoglobin (HbA1c) and increased plasma insulin level. The altered activities of the key enzymes of carbohydrate metabolism such as hexokinase, pyruvate kinase, glucose-6-phosphate dehydrogenase, glucose-6-phosphatase, fructose-1,6-bisphosphatase, and liver marker enzymes (AST, ALT, and ALP), creatine kinase and blood urea nitrogen in serum and blood of diabetic rats were significantly reverted to near normal levels by the administration of eugenol. Further, eugenol administration to diabetic rats improved body weight and hepatic glycogen content demonstrated the antihyperglycemic potential of eugenol in diabetic rats. The present findings suggest that eugenol can potentially ameliorate key enzymes of glucose metabolism in experimental diabetes, and it is sensible to broaden the scale of use of eugenol in a trial to alleviate the adverse effects of diabetes.


Assuntos
Diabetes Mellitus Experimental/tratamento farmacológico , Diabetes Mellitus Experimental/enzimologia , Eugenol/uso terapêutico , Glucose/metabolismo , Hiperglicemia/tratamento farmacológico , Hiperglicemia/enzimologia , Animais , Glicemia/metabolismo , Nitrogênio da Ureia Sanguínea , Peso Corporal/efeitos dos fármacos , Carboidratos/urina , Diabetes Mellitus Experimental/sangue , Diabetes Mellitus Experimental/urina , Comportamento de Ingestão de Líquido/efeitos dos fármacos , Eugenol/química , Eugenol/farmacologia , Comportamento Alimentar/efeitos dos fármacos , Frutose-Bifosfatase/metabolismo , Teste de Tolerância a Glucose , Glucose-6-Fosfatase/metabolismo , Glucosefosfato Desidrogenase/metabolismo , Hemoglobinas Glicadas/metabolismo , Glicogênio/metabolismo , Hexoquinase/metabolismo , Hiperglicemia/sangue , Hiperglicemia/urina , Insulina/sangue , Rim/efeitos dos fármacos , Rim/enzimologia , Fígado/efeitos dos fármacos , Fígado/enzimologia , Masculino , Pâncreas/efeitos dos fármacos , Pâncreas/metabolismo , Pâncreas/patologia , Piruvato Quinase/metabolismo , Ratos , Estreptozocina
13.
Biochimie ; 95(10): 1848-54, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-23806420

RESUMO

Epidemiological studies have demonstrated that the diabetes mellitus is a serious health burden for both governments and healthcare providers. The present study was hypothesized to evaluate the antihyperglycemic potential of fraxetin by determining the activities of key enzymes of carbohydrate metabolism in streptozotocin (STZ) - induced diabetic rats. Diabetes was induced in male albino Wistar rats by intraperitoneal administration of STZ (40 mg/kg b.w). Fraxetin was administered to diabetic rats intra gastrically at 20, 40, 80 mg/kg b.w for 30 days. The dose 80 mg/kg b.w, significantly reduced the levels of blood glucose and glycosylated hemoglobin (HbA1c) and increased plasma insulin level. The altered activities of the key enzymes of carbohydrate metabolism such as glucokinase, glucose-6-phosphate dehydrogenase, glucose-6-phosphatase, fructose-1,6-bisphosphatase and hepatic enzymes (aspartate transaminase (AST), alanine transaminase (ALT) and alkaline phosphatase (ALP)) in the liver tissues of diabetic rats were significantly reverted to near normal levels by the administration of fraxetin. Further, fraxetin administration to diabetic rats improved body weight and hepatic glycogen content demonstrated its antihyperglycemic potential. The present findings suggest that fraxetin may be useful in the treatment of diabetes even though clinical studies to evaluate this possibility may be warranted.


Assuntos
Metabolismo dos Carboidratos/efeitos dos fármacos , Cumarínicos/farmacologia , Diabetes Mellitus Experimental/tratamento farmacológico , Hipoglicemiantes/farmacologia , Fígado/efeitos dos fármacos , Alanina Transaminase/metabolismo , Fosfatase Alcalina/metabolismo , Animais , Aspartato Aminotransferases/metabolismo , Glicemia/metabolismo , Peso Corporal/efeitos dos fármacos , Diabetes Mellitus Experimental/induzido quimicamente , Diabetes Mellitus Experimental/enzimologia , Diabetes Mellitus Experimental/patologia , Esquema de Medicação , Frutose-Bifosfatase/metabolismo , Glucoquinase/metabolismo , Glucose-6-Fosfatase/metabolismo , Glucosefosfato Desidrogenase/metabolismo , Hemoglobinas Glicadas/metabolismo , Glicogênio/metabolismo , Insulina/sangue , Fígado/enzimologia , Fígado/patologia , Masculino , Ratos , Ratos Wistar , Estreptozocina
14.
Chem Biol Interact ; 195(1): 43-51, 2012 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-22056647

RESUMO

Oxidative stress has been suggested as a contributory factor in development and complication of diabetes. The aim of the study was to evaluate the effect of diosmin (DS) in oxidative stress in streptozotocin-nicotinamide (STZ-NA)-induced diabetic rats by measuring the lipid peroxidation (LPO) as well as the ameliorative properties. Experimental diabetes was induced by a single intraperitoneal (i.p) injection of STZ (45 mg/kg body weight (b.w.)) dissolved in 0.1 mol/L citrate buffer (pH 4.5), 15 min after the i.p administration of NA (110 mg/kg b.w.). Diabetic rats exhibited increased plasma glucose with significant decrease in plasma insulin levels. The activities of antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione-S-transferase (GST) and the levels of low-molecular weight antioxidants vitamin C, vitamin E and reduced glutathione (GSH) were decreased while increases in the levels of LPO markers were observed in liver and kidney tissues of diabetic control rats as compared to normal control rats. Oral treatment with DS (100mg/kg/day) for a period of 45 days showed significant ameliorative effects on all the biochemical parameters studied. Biochemical findings were supported by histological studies. These results indicated that DS has potential ameliorative effects in addition to its antidiabetic effect in type 2 diabetic rats.


Assuntos
Diabetes Mellitus Experimental/induzido quimicamente , Diabetes Mellitus Experimental/metabolismo , Diosmina/farmacologia , Hipoglicemiantes/farmacologia , Niacinamida , Estresse Oxidativo/efeitos dos fármacos , Estreptozocina , Administração Oral , Animais , Ácido Ascórbico/metabolismo , Catalase/metabolismo , Diabetes Mellitus Experimental/tratamento farmacológico , Glutationa/metabolismo , Glutationa Peroxidase/metabolismo , Glutationa Transferase/metabolismo , Rim/metabolismo , Rim/patologia , Peroxidação de Lipídeos/efeitos dos fármacos , Fígado/metabolismo , Fígado/patologia , Masculino , Ratos , Ratos Wistar , Superóxido Dismutase/metabolismo , Vitamina E/metabolismo
15.
Biomed Pharmacother ; 64(7): 477-81, 2010 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-20362409

RESUMO

The purpose of this study was to investigate the effect of diosmin on hepatic key enzymes of carbohydrate metabolism in streptozotocin-nicotinamide-induced diabetic rats. Diosmin was administered to streptozotocin-induced (45 mg/kg b.w) diabetic rats at different doses (25, 50, 100 mg/kg b.w) for 45 days to assess its effect on fasting plasma glucose, insulin, glycosylated hemoglobin, hemoglobin and carbohydrate metabolic enzymes, it was found that plasma glucose was significantly reduced in a dose-dependent manner when compared to the diabetic control. In addition, oral administration of diosmin (100mg/kg b.w) significantly decreased glycosylated hemoglobin and increased hemoglobin and plasma insulin. The activities of the hepatic key enzymes such as hexokinase and glucose-6-phosphate dehydrogenase were significantly increased whereas, glucose-6-phosphatase and fructose-1,6-bisphosphatase were significantly decreased. Furthermore, protection against body weight loss of diabetic animals was also observed. These results showed that diosmin has potential antihyperglycemic activity in streptozotocin-nicotinamide-induced diabetic rats.


Assuntos
Metabolismo dos Carboidratos/efeitos dos fármacos , Diabetes Mellitus Experimental/tratamento farmacológico , Diosmina/farmacologia , Enzimas/metabolismo , Hipoglicemiantes/farmacologia , Fígado/efeitos dos fármacos , Fígado/enzimologia , Animais , Glicemia/metabolismo , Diabetes Mellitus Experimental/metabolismo , Relação Dose-Resposta a Droga , Frutose-Bifosfatase/metabolismo , Glucose-6-Fosfatase/metabolismo , Glucosefosfato Desidrogenase/metabolismo , Hemoglobinas Glicadas/metabolismo , Hemoglobinas/metabolismo , Insulina/sangue , Insulina/metabolismo , Masculino , Niacinamida , Ratos , Ratos Wistar , Estreptozocina
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