scholarly journals Isolation of Anti-Diabetic Active Compounds from Benincasae Exocarpium and Development of Simultaneous Analysis by HPLC-PDA

Molecules ◽  
2021 ◽  
Vol 27 (1) ◽  
pp. 9
Author(s):  
Hye Sung Ryu ◽  
Suk Jin Lee ◽  
Wan Kyunn Whang

Diabetes is a chronic metabolic disease that is a constant problem. Previous studies have reported that Benincasa cerifera Savi. extracts are effective in treating diabetes and its complications. Benincasae Exocarpium (BE) is a fruit peel of B. cerifera that has been reported to be used for the prevention and treatment of metabolic diseases such as hyperglycemia, obesity, and hyperlipidemia. However, there are not enough studies on the compounds and bioassays to support the efficacy of BE. The inhibitory activity of the BE extracts and fractions against advanced glycation end-products (AGE) formation and α-glucosidase activity was evaluated. These assays are relevant for the treatment of type 2 diabetes and its complications. Based on these results, compounds 1–11 were isolated through bioassay-guided isolation. In addition, we developed a high-performance liquid chromatography (HPLC) method that can simultaneously analyze these 11 compounds. Activity evaluation of the compounds was also conducted, and eight compounds exhibited significant activity. Among these, flavonoid compounds showed strong activity. A quantitative evaluation of eight bioactive compounds (2, 5–11) was conducted. In conclusion, this study demonstrated the potential of BE for prevention and treatment of type 2 diabetes and its complications.

Biomedicines ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 936
Author(s):  
Pavel H. Lugo-Fabres ◽  
Leslie M. Otero-Sastre ◽  
Johanna Bernáldez-Sarabia ◽  
Tanya A. Camacho-Villegas ◽  
Noemi Sánchez-Campos ◽  
...  

The FDA’s approval of peptide drugs such as Ziconotide or Exendin for pain relief and diabetes treatment, respectively, enhanced the interest to explore novel conotoxins from Conus species venom. In general, conotoxins can be used in pathologies where voltage-gated channels, membrane receptors, or ligands alter normal physiological functions, as in metabolic diseases such as Type 2 diabetes. In this study, the synthetic cal14.2b (s-cal14.2b) from the unusual Californiconus californicus demonstrated bioactivity on NIT-1 insulinoma cell lines stimulating insulin secretion detecting by high performance liquid chromatography (HPLC). Accordingly, s-cal14.2b increased the CaV1.2/1.3 channel-current by 35 ± 4% with a recovery τ of 10.3 ± 4 s in primary cell culture of rat pancreatic β-cells. The in vivo results indicated a similar effect of insulin secretion on mice in the glucose tolerance curve model by reducing the glucose from 500 mg/dL to 106 mg/dL in 60 min, compared to the negative control of 325 mg/dL at the same time. The PET-SCAN with radiolabeling 99mTc-s-cal14.2b demonstrated biodistribution and accumulation in rat pancreas with complete depuration in 24 h. These findings show the potential therapeutic use of s-cal14.2b in endocrinal pathologies such as early stages of Type 2 Diabetes where the pancreas’s capability to produce insulin is still effective.


2021 ◽  
Vol 23 (6) ◽  
pp. 541-547
Author(s):  
E. V. Pokrovskaya ◽  
I. A. Sklyanik ◽  
E. A. Shestakova ◽  
M. V. Shestakova

Concerning the uncontrolled growth in the incidence of obesity and Type 2 Diabetes Mellitus (T2DM), numerous research have been carried out to study the pathogenetic mechanisms of progress of these diseases and development of new methods for their prevention and treatment in recent years. T2DM is known to be a multifactorial disease, in the development of which both lifestyle and various environmental factors, and genetic predisposition are involved. At the same time, in recent years, a theory has been discussed that intestinal dysbiosis, which is caused with quantitative and qualitative changes in the gut microbiota (GM) is one of the mechanisms of obesity and T2DM development. At the moment, various methods have been proposed for restoring the normal composition of GM, including the administration of prebiotics and metabiotics that stimulate the growth of gut flora, as well as probiotics, which directly include the necessary beneficial bacteria (mainly Bifidobacterium and Lactobacillus). Fecal microflora transplantation (FMT), which allows transferring an entire microbial community into the recipient's body, rather than individual bacteria is the newest and least studied method of GM normalization. In this connection, this method of GM influencing is of great interest for the prevention and treatment of metabolic diseases.


Author(s):  
Tuti Asryani ◽  
Ellyza Nasrul ◽  
Rikarni Rikarni ◽  
Tutty Prihandani

Background: Glycated Hb (HbA1c) test is needed to control glycemic in high prevalence type 2 diabetes mellitus (DM) patients. Hemoglobin fraction separated and chemical reaction are two main concepts in HbA1c test. Ion exchange-high performance liquid chromatography (HPLC) and boronate affinity use first concept. Ion exchange-HPLC is reference method in most of clinical laboratorium. Point of care testing (POCT) with boronate affinity method that has been standardized by international institution is available. The aim of this study was to compare boronate affinity POCT method and ion exchange-HPLC method.Method: This cross sectional study was conducted to 22 type 2 DM patients those fullfill inclusion and exclusion criteria in January 2017 to February 2018. Level of HbA1c was assayed with boronate affinity POCT and ion exchange-HPLC method. T-test was used to analyse data and no significance difference if p>0.005Results: Subjects of this study are women (59.1%) more than men (40.9%) with age mean 59.23 years old (8.1). Uncontroled type 2 DM (77.3%) more than controled type 2 DM (22.7%).Mean of HbA1 level was 8.0% (1.7) in boronate affinity POCT and 8.3% (1.8) in ion exchange-HPLC. T-test showed no significance difference between those two HbA1C assay methods (p>0.005).Conclusion: There was no difference HbA1c level between boronate affinity POCT method and ion exchange-HPLC method.


Nutrients ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1288 ◽  
Author(s):  
Giuseppe Della Pepa ◽  
Claudia Vetrani ◽  
Marilena Vitale ◽  
Gabriele Riccardi

Type 2 diabetes mellitus (T2DM) is one of the most common metabolic diseases and represents a leading cause of morbidity and mortality because of its related complications. The alarming rise in T2DM prevalence worldwide poses enormous challenges in relation to its social, economic, and a clinical burden requiring appropriate preventive strategies. Currently, lifestyle modifications—including approaches to promote a moderate body weight reduction and to increase regular physical exercise—are the first crucial intervention for T2DM prevention. In the light of the difficulty in reducing body weight and in long-term maintenance of weight loss, quality changes in dietary patterns—in terms of macro and micronutrient composition—can also strongly affect the development of T2DM. This may provide a more practical and suitable preventative approach than simply implementing caloric restriction. Along this line, there is increasing evidence that wholegrain consumption in substitution of refined grains is associated with a reduction of the incidence of several non-communicable chronic diseases. The aim of the present review is to summarize the current evidence from observational and randomized controlled clinical trials on the benefits of wholegrain on T2DM prevention and treatment. Plausible mechanisms by which wholegrain could act on glucose homeostasis and T2DM prevention are also evaluated. Altogether, the totality of the available evidence supports present dietary recommendations promoting wholegrain foods for the prevention and treatment of T2DM.


2020 ◽  
Vol 26 ◽  
Author(s):  
Margarita A. Sazonova ◽  
Anastasia I. Ryzhkova ◽  
Vasily V. Sinyov ◽  
Marina D. Sazonova ◽  
Tatiana V. Kirichenko ◽  
...  

Background: The present review article considers some chronic diseases of vascular and metabolic genesis, the causes of which may be mitochondrial dysfunction. Very often, in the long course of the disease, complications may occur, leading to myocardial infarction or ischemic stroke and as a result, death.In particular, a large percentage of human deaths nowadays belongs to cardiovascular diseases such as coronary heart disease (CHD), arterial hypertension, cardiomyopathies and type 2 diabetes mellitus. Objective: The aim of the present review was the analysis of literature sources, devoted to an investigation of a link of mitochondrial DNA mutations with chronic diseases of vascular and metabolic genesis, Results: The analysis of literature indicates the association of the mitochondrial genome mutations with coronary heart disease, type 2 diabetes mellitus, hypertension and various types of cardiomyopathies. Conclusion: The detected mutations can be used to analyze the predisposition to chronic diseases of vascular and metabolic genesis. They can also be used to create molecular-cell models necessary to evaluate the effectiveness of drugs developed for treatment of these pathologies. MtDNA mutations associated withthe absence of diseases of vascular and metabolic genesis could be potential candidates for gene therapy of diseases of vascular and metabolic genesis.


Nutrients ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1460
Author(s):  
Kalliopi Karatzi ◽  
Yannis Manios

Type 2 diabetes (T2DM) and hypertension are major health problems, with an undisputed growth burden in the past decades [...]


2021 ◽  
pp. 1-6
Author(s):  
Léonie Dupuis ◽  
Amanda Brown-Tortorici ◽  
Kamyar Kalantar-Zadeh ◽  
Shivam Joshi

<b><i>Background:</i></b> Plant-based diets are defined as an eating pattern focused on the consumption of unprocessed fruits, vegetables, nuts, whole grains, oils, and beans. They can include various forms of vegetarian, vegan, DASH, and Mediterranean diets. Plant-based diets have proven useful in the prevention and treatment of several lifestyle diseases like type 2 diabetes, hypertension, and obesity. Recently, a growing body of literature has emerged regarding plant-based diets for patients with kidney failure, including those on dialysis. Although evidence is still limited, preliminary findings are encouraging. <b><i>Summary:</i></b> This article reviews current literature on the use of plant-based diets in the treatment of patients on dialysis.


2015 ◽  
Vol 129 (12) ◽  
pp. 1083-1096 ◽  
Author(s):  
Joseph B. McPhee ◽  
Jonathan D. Schertzer

The bacteria that inhabit us have emerged as factors linking immunity and metabolism. Changes in our microbiota can modify obesity and the immune underpinnings of metabolic diseases such as Type 2 diabetes. Obesity coincides with a low-level systemic inflammation, which also manifests within metabolic tissues such as adipose tissue and liver. This metabolic inflammation can promote insulin resistance and dysglycaemia. However, the obesity and metabolic disease-related immune responses that are compartmentalized in the intestinal environment do not necessarily parallel the inflammatory status of metabolic tissues that control blood glucose. In fact, a permissive immune environment in the gut can exacerbate metabolic tissue inflammation. Unravelling these discordant immune responses in different parts of the body and establishing a connection between nutrients, immunity and the microbiota in the gut is a complex challenge. Recent evidence positions the relationship between host gut barrier function, intestinal T cell responses and specific microbes at the crossroads of obesity and inflammation in metabolic disease. A key problem to be addressed is understanding how metabolite, immune or bacterial signals from the gut are relayed and transferred into systemic or metabolic tissue inflammation that can impair insulin action preceding Type 2 diabetes.


2021 ◽  
pp. 1-11
Author(s):  
Roni Lotan ◽  
Ithamar Ganmore ◽  
Abigail Livny ◽  
Nofar Itzhaki ◽  
Mark Waserman ◽  
...  

Background: Dietary advanced glycation end-products (AGEs) are linked to cognitive decline. However, clinical trials have not tested the effect of AGEs on cognition in older adults. Objective: The aim of the current pilot trial was to examine the feasibility of an intervention to reduce dietary AGEs on cognition and on cerebral blood flow (CBF). Methods: The design is a pilot randomized controlled trial of dietary AGEs reduction in older adults with type 2 diabetes. Seventy-five participants were randomized to two arms. The control arm received standard of care (SOC) guidelines for good glycemic control; the intervention arm, in addition to SOC guidelines, were instructed to reduce their dietary AGEs intake. Global cognition and CBF were assessed at baseline and after 6 months of intervention. Results: At baseline, we found a reverse association between AGEs and cognitive functioning, possibly reflecting the long-term toxicity of AGEs on the brain. There was a significant improvement in global cognition at 6 months in both the intervention and SOC groups which was more prominent in participants with mild cognitive impairment. We also found that at baseline, higher AGEs were associated with increased CBF in the left inferior parietal cortex; however, 6 months of the AGEs lowering intervention did not affect CBF levels, despite lowering AGEs exposure in blood. Conclusion: The current pilot trial focused on the feasibility and methodology of intervening through diet to reduce AGEs in older adults with type 2 diabetes. Our results suggest that participants with mild cognitive impairment may benefit from an intensive dietary intervention.


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