scholarly journals Antidiabetic Effect and Mode of Action of Cytopiloyne

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Cicero Lee-Tian Chang ◽  
Hsien-Yueh Liu ◽  
Tien-Fen Kuo ◽  
Yi-Jou Hsu ◽  
Ming-Yi Shen ◽  
...  
Keyword(s):  
Insulin Secretion ◽  
Blood Glucose ◽  
Mechanism Of Action ◽  
Mode Of Action ◽  
Therapeutic Potential ◽  
Glycosylated Hemoglobin ◽  
Postprandial Blood Glucose ◽  
Blood Insulin ◽  
Glucose Levels ◽  
Long Term Treatment

Cytopiloyne was identified as a novel polyacetylenic compound. However, its antidiabetic properties are poorly understood. The aim of the present study was to investigate the anti-diabetic effect and mode of action of cytopiloyne on type 2 diabetes (T2D). We first evaluated the therapeutic effect of cytopiloyne on T2D in db/db mice. We found that one dose of cytopiloyne reduced postprandial glucose levels while increasing blood insulin levels. Accordingly, long-term treatment with cytopiloyne reduced postprandial blood glucose levels, increased blood insulin, improved glucose tolerance, suppressed the level of glycosylated hemoglobinA1c(HbA1c), and protected pancreatic islets in db/db mice. Next, we studied the anti-diabetic mechanism of action of cytopiloyne. We showed that cytopiloyne failed to decrease blood glucose in streptozocin- (STZ-)treated mice whoseβcells were already destroyed. Additionally, cytopiloyne dose dependently increased insulin secretion and expression inβcells. The increase of insulin secretion/expression of cytopiloyne was regulated by protein kinase Cα(PKCα) and its activators, calcium, and diacylglycerol (DAG). Overall, our data suggest that cytopiloyne treats T2D via regulation of insulin production involving the calcium/DAG/PKCαcascade inβcells. These data thus identify the molecular mechanism of action of cytopiloyne and prove its therapeutic potential in T2D.

scholarly journals Prevention of Postprandial Hyperglycemia by Ophthalmic Nanoparticles Based on Protamine Zinc Insulin in the Rabbit

Pharmaceutics ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 375
Author(s):  
Saori Deguchi ◽  
Fumihiko Ogata ◽  
Takumi Isaka ◽  
Hiroko Otake ◽  
Yosuke Nakazawa ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Plasma Glucose ◽  
Polyacrylic Acid ◽  
Rabbit Model ◽  
Postprandial Hyperglycemia ◽  
Postprandial Blood Glucose ◽  
Oral Glucose ◽  
Glucose Levels ◽  
Protamine Zinc Insulin ◽  
Bead Mill

Postprandial hyperglycemia, a so-called blood glucose spike, is associated with enhanced risks of diabetes mellitus (DM) and its complications. In this study, we attempted to design nanoparticles (NPs) of protamine zinc insulin (PZI) by the bead mill method, and prepare ophthalmic formulations based on the PZI-NPs with (nPZI/P) or without polyacrylic acid (nPZI). In addition, we investigated whether the instillation of the newly developed nPZI and nPZI/P can prevent postprandial hyperglycemia in a rabbit model involving the oral glucose tolerance test (OGTT). The particle size of PZI was decreased by the bead mill to a range for both nPZI and nPZI/P of 80–550 nm with no observable aggregation for 6 d. Neither nPZI nor nPZI/P caused any noticeable corneal toxicity. The plasma INS levels in rabbits instilled with nPZI were significantly higher than in rabbits instilled with INS suspensions (commercially available formulations, CA-INS), and the plasma INS levels were further enhanced with the amount of polyacrylic acid in the nPZI/P. In addition, the rapid rise in plasma glucose levels in OGTT-treated rabbits was prevented by a single instillation of nPZI/P, which was significantly more effective at attenuating postprandial hyperglycemia (blood glucose spike) in comparison with nPZI. In conclusion, we designed nPZI/P, and show that a single instillation before OGTT attenuates the rapid enhancement of plasma glucose levels. These findings suggest a better management strategy for the postprandial blood glucose spike, which is an important target of DM therapy.

scholarly journals Evaluation of the impact of orally administered carbohydrates on postprandial blood glucose levels in different pre-clinical models

2016 ◽  
Vol 52 (4) ◽  
pp. 761-769 ◽  
Author(s):  
Any de Castro Ruiz Marques ◽  
Fabiana Percinoto Monteiro Schiavon ◽  
Patricia Batista Travassos ◽  
Vanessa Fontana Eik ◽  
Guilherme Godoy ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Postprandial Blood Glucose ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Clinical Models ◽  
The Impact

scholarly journals Altered Glucose and Insulin Responses to Brain Medullary Thyrotropin-Releasing Hormone (TRH)-Induced Autonomic Activation in Type 2 Diabetic Goto-Kakizaki Rats

Endocrinology ◽  
2005 ◽  
Vol 146 (12) ◽  
pp. 5425-5432 ◽  
Author(s):  
Yan Ao ◽  
Natalie Toy ◽  
Moon K. Song ◽  
Vay Liang W. Go ◽  
Hong Yang
Keyword(s):  
Insulin Secretion ◽  
Blood Glucose ◽  
Wistar Rats ◽  
Mrna Levels ◽  
Gk Rats ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Autonomic Activation ◽  
Insulin Responses

Insulin secretion is impaired in type 2 diabetes (T2D). The insulin and glucose responses to central autonomic activation induced by excitation of brain medullary TRH receptors were studied in T2D Goto-Kakizaki (GK) rats. Blood glucose levels in normally fed, pentobarbital-anesthetized GK and nondiabetic Wistar rats were 193 and 119 mg/100 ml in males and 214 and 131 mg/100 ml in females. Intracisternal injection (ic) of the stable TRH analog RX 77368 (10 ng) induced significantly higher insulin response in both genders of overnight-fasted GK rats compared with Wistar rats and slightly increased blood glucose in female Wistar rats but significantly decreased it from 193 to 145 mg/100 ml in female GK rats. RX 77368 (50 ng) ic induced markedly greater glucose and relatively weaker insulin responses in male GK rats than Wistar rats. Bilateral vagotomy blocked ic RX 77368-induced insulin secretion, whereas adrenalectomy abolished its hyperglycemic effect. In adrenalectomized male GK but not Wistar rats, ic RX 77368 (50 ng) dramatically increased serum insulin levels by 6.5-fold and decreased blood glucose levels from 154 to 98 mg/100 ml; these changes were prevented by vagotomy. GK rats had higher basal pancreatic insulin II mRNA levels but a lower response to ic RX 77368 (50 ng) compared with Wistar rats. These results indicate that central-vagal activation-induced insulin secretion is susceptible in T2D GK rats. However, the dominant sympathetic-adrenal response to medullary TRH plays a suppressing role on vagal-mediated insulin secretion. This unbalanced vago-sympathetic activation by medullary TRH may contribute to the impaired insulin secretion in T2D.

scholarly journals Efficacy and Safety of Zhenyuan Capsule for Coronary Heart Disease with Abnormal Glucose and Lipid Metabolism: Study Protocol for a Randomized, Double-Blind, Parallel-Controlled, Multicenter Clinical Trial

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Yu Qiao ◽  
Jingchun Zhang ◽  
Yue Liu ◽  
Zhiqi Liang ◽  
Yuhua Wang ◽  
...  
Keyword(s):  
Coronary Heart Disease ◽  
Heart Disease ◽  
Lipid Metabolism ◽  
Blood Glucose ◽  
Glycosylated Hemoglobin ◽  
Postprandial Blood Glucose ◽  
Common Disease ◽  
Efficacy And Safety ◽  
Double Blind ◽  
Glucose And Lipid Metabolism

Background. Coronary heart disease (CHD) and abnormal glucose and lipid metabolism are closely associated and generally coexist. The Qi and Yin deficiency syndrome is a common disease pattern encountered in traditional Chinese medicine. We designed a protocol to determine the effectiveness and safety of Zhenyuan capsules for CHD with abnormal glucose and lipid metabolism. Methods. This multicenter, randomized, double-blind, parallel-controlled trial was designed in accordance with the CONSORT. We will recruit 200 eligible male patients aged 45–75 years from three participating centers and randomly assign them to treatment and control groups (1 : 1). The primary indicators are glycosylated hemoglobin, fasting blood glucose, 2-hour postprandial blood glucose, and triglyceride levels. The secondary indicators are the Seattle Angina Questionnaire, TCM symptom indicators, ultrasonic cardiography finding, coagulation indicator, and P-selectin level. Measurements will be performed at baseline (T0), the end of the run-in period (T1), and weeks 4 (T2), 8 (T3), and 12 (T4) of the treatment period. Adverse events will be monitored during the trial. Discussion. This study aims to evaluate the efficacy and safety of Zhenyuan capsules in patients with CHD and abnormal glucose and lipid metabolism. The results will provide critical evidence of the usefulness of the Chinese herbal medicine for CHD with abnormal glucose and lipid metabolism. Trial Registration. This trial is registered with the Chinese Clinical Trials Registry, with identifier number ChiCTR-TRC-14004639, May 4, 2014.

scholarly journals Effects of Various Blending Ratios of Rice and Waxy Barley on Postprandial Blood Glucose Levels

2018 ◽  
Vol 71 (6) ◽  
pp. 283-288
Author(s):  
Seiichiro Aoe ◽  
Kozo Komae ◽  
Yutaka Inoue ◽  
Isamu Murata ◽  
Yuki Minegishi ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Postprandial Blood Glucose ◽  
Glucose Levels ◽  
Blood Glucose Levels

scholarly journals Prognostic value of early glycosylated hemoglobin and blood glucose levels in patients with basal ganglia cerebral hemorrhage

2019 ◽  
pp. 030006051987203
Author(s):  
Wentao Sun ◽  
Qunliang Hu ◽  
Juan Wang ◽  
Ning Zheng ◽  
Kai Chen ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Basal Ganglia ◽  
Cerebral Hemorrhage ◽  
Glycosylated Hemoglobin ◽  
Multivariate Logistic Regression Analysis ◽  
Neurological Impairment ◽  
Glucose Levels ◽  
Bleeding Volume ◽  
Consciousness Disorder ◽  
Ich Score

Objective This study was performed to analyze the relationships of the early glycosylated hemoglobin (GHb) level and blood glucose level (BGL) with prognosis in patients with basal ganglia cerebral hemorrhage (BGCH). Methods In total, 186 patients with BGCH were included in this prospective study. The GHb level, fasting BGL, bleeding volume, degree of consciousness disorder, intracerebral hemorrhage (ICH) score, functional outcome in patients with primary ICH (FUNC) score, ICH grading scale (ICH-GS) score, and neurological impairment were recorded during a 30-day observation period. Results The mean BGCH volume was 58.42 mL. The 30-day mortality rate was 22.32%. The ICH-GS score [odds ratio (OR) = 0.815, 95% confidence interval (95% CI) = 0.504–0.688, R = 0.624] and bleeding volume (OR = 0.882, 95% CI = 0.785–0.918, R = 0.784) were significant predictors of 30-day mortality. The GHb level (OR = 6.138, R = 0.705) and BGL (OR = 1.055, R = 0.418) were independent predictors of 30-day mortality according to the multivariate logistic regression analysis. Conclusion The GHb level and BGL are strong predictors of 30-day mortality in patients with BGCH and accurately predict the prognosis in these patients.

scholarly journals EFFECT OF AEROBIC EXERCISES AND RESISTANCE TRAINING ON GLUCOSE LEVELS IN TYPE 2 DIABETIC SUBJECTS.

2017 ◽  
Vol 10 (7) ◽  
pp. 360
Author(s):  
Aishwarya Pramod Benkar ◽  
Smita Bhimrao Kanase
Keyword(s):  
Diabetes Mellitus ◽  
Blood Glucose ◽  
Resistance Training ◽  
Blood Glucose Level ◽  
Glucose Level ◽  
Postprandial Blood Glucose ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Significant Difference

Objective: Diabetes mellitus is a leading cause of death and disability in the world and its prevalence is predicted to rise to 10% by 2030. Hence, this study is conducted with objectives to find out the effect of aerobic exercises and resisted exercises on blood glucose levels in type 2 diabetes mellitus (T2DM) subjects and to compare the effect of both exercises on blood glucose level.Method: The comparative study was conducted at Krishna Institute of Medical Sciences Deemed University, Physiotherapy department, Karad. 30 participants with age group between 30 and 65 years were taken. Subjects were selected as per inclusion and exclusion criteria. Group A (15) participants were given aerobic exercise on static bicycle, and Group B (15) participants were given resistance training using dumbbells and weight cuffs for 5 days/week for 4 weeks. Diet recommendations were given to every participant.Results: Statistical analysis was performed using paired and unpaired t-test. Analysis showed statistically extremely significant difference in fasting blood glucose level and postprandial blood glucose level in both the groups (p≤0.0001).Conclusion: Thus, this study concludes that both aerobic exercises and resistance training prove to be beneficial in controlling blood glucose levels in T2DM subjects.

scholarly journals Effects of metformin, acarbose, and sitagliptin monotherapy on gut microbiota in Zucker diabetic fatty rats

2019 ◽  
Vol 7 (1) ◽  
pp. e000717 ◽  
Author(s):  
Minchun Zhang ◽  
Rilu Feng ◽  
Mei Yang ◽  
Cheng Qian ◽  
Zheng Wang ◽  
...  
Keyword(s):  
Blood Glucose ◽  
Gut Microbiota ◽  
Relative Abundance ◽  
16S Rrna Gene Sequencing ◽  
Postprandial Blood Glucose ◽  
Saline Control ◽  
Rrna Gene ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Zucker Diabetic Fatty Rats

ObjectiveRecent studies have demonstrated that gut microbiota was closely related to metabolic disorders such as type 2 diabetes. Oral antidiabetic medications including metformin, acarbose and sitagliptin lowered blood glucose levels via acting on the gastrointestinal tract. The aim of the study was to observe the comparisons among those medications on gut microbiota composition.Research design and methodsZucker diabetic fatty rats (n=32) were randomly divided into four groups, and had respectively gastric administration of normal saline (control), metformin (215.15 mg/kg/day), acarbose (32.27 mg/kg/day), or sitagliptin (10.76 mg/kg/day) for 4 weeks. Blood glucose levels were measured during an intragastric starch tolerance test after the treatments. 16S rRNA gene sequencing was used to access the microbiota in the fecal samples.ResultsMetformin, acarbose, and sitagliptin monotherapy effectively decreased fasting and postprandial blood glucose levels (p<0.001). Acarbose group displayed specific cluster and enterotype mainly composed byRuminococcus 2whileLactobacilluswas the dominant bacterium in the enterotype of the other three groups. The relative abundance of generaRuminococcus 2andBifidobacteriumwas dramatically higher in acarbose group. Metformin and sitagliptin increased the relative abundance of genus Lactobacillus. Metagenomic prediction showed that the functional profiles of carbohydrate metabolism were enriched in acarbose group.ConclusionsMetformin, acarbose and sitagliptin exerted different effects on the composition of gut microbiota and selectively increased the beneficial bacteria. Supplementation with specific probiotics may further improve the hypoglycemic effects of the antidiabetic drugs.

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