scholarly journals Degradation of Incretins and Modulation of Blood Glucose Levels by Periodontopathic Bacterial Dipeptidyl Peptidase 4

2017 ◽  
Vol 85 (9) ◽  
Author(s):  
Yuko Ohara-Nemoto ◽  
Manami Nakasato ◽  
Yu Shimoyama ◽  
Tomomi T. Baba ◽  
Takeshi Kobayakawa ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Blood Glucose ◽  
Dipeptidyl Peptidase ◽  
Oral Glucose ◽  
Content Type ◽  
Dipeptidyl Peptidase 4 ◽  
Glucose Levels ◽  
Flight Mass Spectrometry ◽  
Blood Glucose Levels ◽  
Molecular Events

ABSTRACT Severe periodontitis is known to aggravate diabetes mellitus, though molecular events related to that link have not been fully elucidated. Porphyromonas gingivalis, a major pathogen of periodontitis, expresses dipeptidyl peptidase 4 (DPP4), which is involved in regulation of blood glucose levels by cleaving incretins in humans. We examined the enzymatic characteristics of DPP4 from P. gingivalis as well as two other periodontopathic bacteria, Tannerella forsythia and Prevotella intermedia, and determined whether it is capable of regulating blood glucose levels. Cell-associated DPP4 activity was found in those microorganisms, which was effectively suppressed by inhibitors of human DPP4, and molecules sized 73 kDa in P. gingivalis, and 71 kDa in T. forsythia and P. intermedia were immunologically detected. The k cat/Km values of recombinant DPP4s ranged from 721 ± 55 to 1,283 ± 23 μM−1s−1 toward Gly-Pro-4-methylcoumaryl-7-amide (MCA), while those were much lower for His-Ala-MCA. Matrix-assisted laser desorption ionization–time of flight mass spectrometry (MALDI-TOF MS) analysis showed His/Tyr-Ala dipeptide release from the N termini of incretins, glucagon-like peptide 1 (GLP-1) and glucose-dependent insulinotropic polypeptide, respectively, with the action of microbial DPP4. Moreover, intravenous injection of DPP4 into mice decreased plasma active GLP-1 and insulin levels, accompanied by a substantial elevation in blood glucose over the control after oral glucose administration. These results are the first to show that periodontopathic bacterial DPP4 is capable of modulating blood glucose levels the same as mammalian DPP4; thus, the incidence of periodontopathic bacteremia may exacerbate diabetes mellitus via molecular events of bacterial DPP4 activities.

scholarly journals Glucose levels during gestational diabetes pregnancy and the risk of developing postpartum diabetes or prediabetes

2022 ◽  
Vol 22 (1) ◽  
Author(s):  
Chadakarn Phaloprakarn ◽  
Siriwan Tangjitgamol
Keyword(s):  
Diabetes Mellitus ◽  
Blood Glucose ◽  
Glycemic Control ◽  
Gestational Diabetes ◽  
Confidence Interval ◽  
Control Group ◽  
Oral Glucose ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
The Impact

Abstract Background Blood glucose levels during pregnancy may reflect the severity of insulin secretory defects and/or insulin resistance during gestational diabetes mellitus (GDM) pregnancy. We hypothesized that suboptimal glycemic control in women with GDM could increase the risk of postpartum type 2 diabetes mellitus (T2DM) or prediabetes. Our objective was to evaluate the impact of plasma glucose levels throughout GDM pregnancy on the risk of postpartum T2DM or prediabetes. Methods The medical records of 706 women with GDM who underwent a postpartum 75-g, 2-hour oral glucose tolerance test at our institution between January 2011 and December 2018 were reviewed. These women were classified into 2 groups according to glycemic control during pregnancy: ≤ 1 occasion of either fasting glucose ≥ 95 mg/dL or 2-hour postprandial glucose ≥ 120 mg/dL was defined as optimal glycemic control or else was classified as suboptimal glycemic control. Rates of postpartum T2DM and prediabetes were compared between women with optimal (n = 505) and suboptimal (n = 201) glycemic control. Results The rates of postpartum T2DM and prediabetes were significantly higher in the suboptimal glycemic control group than in the optimal glycemic control group: 22.4% vs. 3.0%, P < 0.001 for T2DM and 45.3% vs. 23.5%, P < 0.001 for prediabetes. In a multivariate analysis, suboptimal glucose control during pregnancy was an independent risk factor for developing either postpartum T2DM or prediabetes. The adjusted odds ratios were 8.4 (95% confidence interval, 3.5–20.3) for T2DM and 3.9 (95% confidence interval, 2.5–6.1) for prediabetes. Conclusion Our findings suggest that blood glucose levels during GDM pregnancy have an impact on the risk of postpartum T2DM and prediabetes.

scholarly journals Impact of sleep duration during pregnancy on the risk of gestational diabetes in the Japan environmental and Children’s study (JECS)

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Mai Myoga ◽  
◽  
Mayumi Tsuji ◽  
Rie Tanaka ◽  
Eiji Shibata ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Risk Factor ◽  
Blood Glucose ◽  
Gestational Diabetes ◽  
Sleep Duration ◽  
Reference Group ◽  
Oral Glucose ◽  
Random Blood Glucose ◽  
Glucose Levels ◽  
Blood Glucose Levels

Abstract Background Gestational diabetes mellitus (GDM) has serious effects on both mother and child. Like Type 2 Diabetes Mellitus, it is increasing in prevalence world-wide. In addition to obesity, sleep duration has been named an important risk factor. Using a large cohort study, including data from 48,787 participants of the Japan Environment and Children’s Study (JECS), we examined the association between sleep duration and both random blood glucose levels and GDM rates during pregnancy. Methods Random blood glucose levels were measured during pregnancy. GDM diagnosis was based on the results of 75 g oral glucose tolerance test. Additional anthropometric data was collected from questionnaires for statistical analysis. Results Compared to mothers averaging 7 to < 10 h sleep (reference group), women receiving < 5 h or ≥ 10 h sleep exhibited significantly elevated random blood glucose levels. This was associated with an elevated risk for positive GDM screening (< 5 h sleep: OR 1.17 (0.96–1.44) p = 0.126; ≥10 h sleep: OR 1.13 (1.03–1.25) p = 0.006). Calculating the risk for GDM, women sleeping < 5 h or ≥ 10 h exhibited elevated risks of 1.31-fold and 1.21 respectively. However, this trend was not found to be significant. Conclusions Sleep is a critical factor in glucose metabolism, with both abnormally long and short sleep duration increasing random blood glucose levels in pregnant women. Moreover, the risk for positive GDM screening increases significantly with elevated sleep, ≥10 h per night. These findings are promising because they support the idea that sleep duration is a modifiable risk factor, and can be focused upon to improve health and pregnancy outcome.

Comparison of the Effects of Mitiglinide and Glibenclamide Administered in Combination with the Dipeptidyl Peptidase-IV Inhibitor Sitagliptin in Rats with Streptozotocin-Nicotinamide-Induced Type 2 Diabetes

Drug Research ◽  
2017 ◽  
Vol 67 (07) ◽  
pp. 396-403 ◽  
Author(s):  
Kenji Akahane ◽  
Kazuma Ojima ◽  
Ayaka Yokoyama ◽  
Toshihiro Inoue ◽  
Sumiyoshi Kiguchi ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Blood Glucose ◽  
Dipeptidyl Peptidase ◽  
Dipeptidyl Peptidase Iv ◽  
Oral Glucose ◽  
Diabetic Patients ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Dpp Iv

Abstract We compared the individual effects of mitiglinide and glibenclamide administered in combination with the dipeptidyl peptidase-IV (DPP-IV) inhibitor sitagliptin on plasma DPP-IV activity and blood glucose levels in rats with streptozotocin-nicotinamide-induced type 2 diabetes (STZ-NA rats). We examined the inhibitory activity of mitiglinide and glibenclamide as well as their combination with sitagliptin on plasma DPP-IV activity in STZ-NA rats. The oral glucose tolerance test (OGTT) was used to compare effects of mitiglinide, glibenclamide, and their combination with sitagliptin on blood glucose levels in STZ-NA rats. Mitiglinide and glibenclamide did not inhibit rat DPP-IV and did not influence the inhibitory effect of sitagliptin on rat plasma DPP-IV activity. In STZ-NA rats, plasma glucose levels were stronger suppressed by a combination of mitiglinide and sitagliptin than by either drug used alone. However, no clear effect of the combination of glibenclamide and sitagliptin was observed. These results indicate that the combination of mitiglinide and sitagliptin has a lower risk of hypoglycemia in the rats with induced type 2 diabetes compared with the combination of glibenclamide and sitagliptin. The combination of mitiglinide and sitagliptin can be a promising combination for the treatment of diabetic patients.

scholarly journals Investigation of the Possible Correlation between Idiopathic Parkinson’s Disease and Diabetes Mellitus in Egyptian Patients: A Pilot Study

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Afnan AwadAllah Elgnainy ◽  
Mohammad Ismail Hamed ◽  
Wael Osman Mohamed ◽  
Nagwa Ali Sabri
Keyword(s):  
Diabetes Mellitus ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Blood Glucose ◽  
Rating Scale ◽  
Oral Glucose ◽  
Diabetic Patients ◽  
Time Curve ◽  
Glucose Levels ◽  
Blood Glucose Levels

Objectives. To study the diabetes-Parkinson's disease (PD) linkage. Methods. The investigators recorded the rapid eye movement sleep behavior disorder screening questionnaire (RBDSQ) score for 60 diabetic patients: 30 patients were treated with metformin-inclusive sulfonylurea and 30 patients were treated with sulphonylurea(s) monotherapy and matched with 30 controls. We evaluated blood glucose kinetics during a 75 g oral glucose tolerance test for (22) nondiabetic parkinsonian patients and (10) controls. The motor complications scores were recorded for all parkinsonian patients using the relevant parts of the Unified Parkinson’s Disease Rating Scale (UPDRS) part IV. Results. Diabetics recorded higher scores of RBDSQ than controls ( p < 0.001 ), with no differences related to antidiabetic therapy. In nondiabetic PD patients, after oral glucose, blood glucose was significantly higher at T1 ( p < 0.001 ) than controls. Moreover, the total area under the time curve for blood glucose levels was significantly higher in PD compared to controls (281.22 ± 52.25 vs. 245.65 ± 48.63 mg.hr./dL; p = 0.013 ). Higher blood glucose levels were associated with motor abnormalities. Diabetic PD patients recorded higher scores of UPDRS ( p < 0.001 ). Conclusion. Diabetes mellitus and Parkinson’s disease are linked, which raises concerns about either of them, probably increasing the risk of the other. This trial is registered with NCT03685357.

The diagnosis of diabetes mellitus

1983 ◽  
Vol 104 (4_Suppl) ◽  
pp. S11-S17
Author(s):  
Bengt Scherstén ◽  
Per-Olof Bitzén
Keyword(s):  
Diabetes Mellitus ◽  
Blood Glucose ◽  
Glucose Tolerance ◽  
Glucose Tolerance Test ◽  
Fasting Blood Glucose ◽  
Tolerance Test ◽  
Oral Glucose ◽  
Glucose Levels ◽  
Asymptomatic Subject ◽  
Blood Glucose Levels

ABSTRACT. The procedure for diagnosing diabetes mellitus when accompanied by classical symptoms is based on random blood glucose levels of 7 mmol/l or more. Problem of diagnosing diabetes in the asymptomatic subject remains difficult. A procedure based on fasting blood glucose levels below 5.5 mmol/l in normals and reproducible values at or above 7 mmol/l in diabetics is proposed. In cases with fasting blood glucose values between 5.5 and 7 mmol/l standardized oral glucose tolerance test is recommended. The diagnostic criteria for normality, impaired glucose tolerance and for diabetes are evaluated against the results of a 10–14 years prospective study.

Provitamin A cassava hydrolysate with Lactobacillus rhamnosus GG regulates weight gain, lipids and postprandial glycemia in wistar rats and humans

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Modupeola Oguntoye ◽  
Olufunke Ezekiel ◽  
Olayinka Oridupa
Keyword(s):  
Weight Gain ◽  
Blood Glucose ◽  
Wistar Rats ◽  
Human Subjects ◽  
Lactobacillus Rhamnosus ◽  
Provitamin A ◽  
Oral Glucose ◽  
Content Type ◽  
Glucose Levels ◽  
Blood Glucose Levels

Purpose This study aims to evaluate the effect of probiotic provitamin A cassava hydrolysate with Lactobacillus rhamnosus GG (hLGG) on weight and lipid profile of Wistar rats and its glycemic index using Wistar rats and human subjects. Design/methodology/approach Adult male Wistar rats (n = 40, 120–150 g) were orally administered provitamin A cassava hydrolysate with 1 × 1010, 2 × 1010 and 4 × 1010 CFU/g encapsulated or CFU/mL free Lactobacillus rhamnosus GG for 30 days, during which weight and lipid profile of rats were monitored. Blood glucose levels of rats and human subjects were also measured in Oral Glucose Tolerance Test to determine the Glycemic indices of hLGG. Findings Rats administered the highest doses of free or encapsulated hLGG [(4 × 1010 CFU) (PHE4 and PHF4, respectively)] had the lowest (18.2 ± 0.7 and 8.0 ± 0.6%, respectively, p < 0.001) percentage body weight gain compared to control (40 ± 0.6%). Lowest cholesterol and triglyceride (42.4 ± 0.5 and 44.4 ± 0.7 g/dL, p < 0.001, respectively) were observed in rats administered PHE4, with the lowest plasma glucose concentrations in PHE4 and PHF4 groups (43 ± 1 and 49 ± 0.7 g/dL, p < 0.001, respectively). Oral Glucose Tolerance Test for rats and human subjects showed lower peak blood glucose levels and glycemic indices in hLGG groups compared to controls in a dose-dependent manner. Originality/value Consumption of soft drinks, which supply non-nutritive energy, may lead to degenerative metabolic disorders such as obesity and diabetes. Beverages with probiotics such as Lactobacillus rhamnosus GG, on the other hand, offer a positive weight management approach. Development of non-dairy beverages such as provitamin A cassava hLGG is ongoing. Provitamin A cassava hLGG showed its ability to control weight gain, blood glucose levels and serum lipids. Thus, the beverage can be consumed as a healthy alternative to soft drinks and for weight management.

Antidiabetic Effect of Aqueous Corrigiola telephiifolia in Streptozotocin- Induced Diabetic Rats

2020 ◽  
Vol 10 (1) ◽  
pp. 61-68 ◽  
Author(s):  
Morad Hebi ◽  
Mohamed Eddouks
Keyword(s):  
Blood Glucose ◽  
Glucose Tolerance Test ◽  
Tolerance Test ◽  
Diabetic Rats ◽  
Oral Glucose ◽  
Oral Glucose Tolerance ◽  
Phytochemical Screening ◽  
Antidiabetic Effect ◽  
Glucose Levels ◽  
Blood Glucose Levels

Background: Corrigiola telephiifolia Pourr, is a perennial species, woody distributed throughout the north of Africa. This plant is used in traditional Mediterranean preparations and has many traditional uses especially treatment of diabetes. Aim/Methods: The current research was carried out to evaluate the antidiabetic effect of Aerial Parts of Aqueous Extract (APAE) of Corrigiola telephiifolia (C. telephiifolia) on both normal and streptozotocin (STZ)-induced diabetic rats treated at a dose of 5 mg/kg for fifteen days. Additionally, the histopathological changes in the liver, morphometric analysis, Oral Glucose Tolerance Test (OGTT) in normal rats and preliminary phytochemical screening for various components were realized. Results: Single oral administration of the APAE of C. telephiifolia (5mg/kg) showed no significant change in glycaemia of normal and STZ-induced diabetic rats. In contrast, repeated oral administration of C. telephiifolia reduced blood glucose levels from 4.11 ± 0.10 mmol/L to 3.16 ± 0.16 mmol/L (p<0.01) 15 days after administration in normal rats. Furthermore, blood glucose levels decreased from 17.84 ± 1.75mmol/L to 1.93 ± 0.33 mmol/L (p<0.0001) in STZ diabetic rats after fifteen days of treatment. According to the oral glucose tolerance test, C. telephiifolia (5 mg/kg) was shown to prevent significantly the increase in blood glucose levels in normal treated rats 30 min after glucose administration when compared to the control group. Also, the liver architecture of diabetic rats treated by C. telephiifolia was improved when compared with the liver architecture of untreated diabetic rats. Concerning the preliminary phytochemical screening of C. telephiifolia, several compounds have been found such as polyphenols, flavonoids, saponins, mucilage and terpenoids. Conclusion: The results show that the aqueous extract of C. telephiifolia possesses significant antihyperglycemic activity.

Efeitos dos Programas de Treinamento Aeróbio, de Força e Combinado na Glicose Sanguínea em Diabéticos do Tipo 2: uma Revisão Sistemática/ Effects of Aerobic, Strength and Combined Programs Training on Blood Glucose in Type 2 Diabetic: a Systematic Review.

1970 ◽  
Vol 5 (1) ◽  
pp. 61-74 ◽  
Author(s):  
Alexandre de Souza E Silva ◽  
Maria Paula Gonçalves Mota
Keyword(s):  
Diabetes Mellitus ◽  
Systematic Review ◽  
Type 2 Diabetes ◽  
Blood Glucose ◽  
Training Program ◽  
Aerobic Training ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Pubmed Database

O trabalho tem como objetivo analisar os estudos que avaliaram os efeitos dos programas de treinamento aeróbio, força e combinado nos níveis de glicose sanguínea em indivíduos com diabetes do tipo 2. Foi utilizado o método de revisão sistemática, sendo utilizada a base de dados PubMed. As palavras chaves utilizadas para pesquisa foram training and diabetes. Foram identificados 484 artigos originais. Apenas 17 estudos respeitaram os critérios de inclusão. Os resultados evidenciam que os programas de treinamento aeróbio diminuíram os níveis de glicose. O programa de treinamento de força também foi favorável à diminuição dos níveis de glicose sanguínea. Já o programa de treinamento combinado não demonstrou efeitos favoráveis no controle da glicose sanguínea. Conclui-se que o programa de treinamento aeróbio e de força ajudam a controlar os níveis de glicose sanguínea em indivíduos com diabetes do tipo 2. Palavras-chave: diabetes mellitus, treinamento, glicose.ABSTRACTThe study aims to analyze the studies that evaluated the effects of aerobic, strength and combined programs training in blood glucose levels in people with type 2 diabetes. We used a systematic review method and is used to PubMed database. The key words used for searching were training and diabetes. We identified 484 original articles. Only 17 studies complied with the inclusion criteria. The results show that aerobic training programs decreased glucose levels. The strength training program was also favorable to decrease in blood glucose levels. But the combined training program has not shown favorable effects on blood glucose control. We conclude that the aerobic training and strength helps control blood glucose levels in individuals with type 2 diabetes. Keywords: diabetes mellitus, training, glucose.

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