Effect of Metformin on Anthropometric Measurements and Hormonal and Biochemical Profile in Patients with Prediabetes

Objectives. Metformin is the most widely preferred first-line oral antidiabetic agent that results in clear benefits in blood sugar regulation and diabetes-related complications. This study is aimed at assessing the effect of metformin on anthropometric, hormonal, and biochemical parameters in patients with prediabetes or insulin resistance. Methods. A prepoststudy was conducted among 52 patients with prediabetes or insulin resistance who met the inclusion criteria. Weight, body mass index (BMI), and waist circumference were measured before and 12 months after metformin treatment. Serum concentrations of sex steroids, gonadotropins, and lipids were also assessed. Homeostasis model assessment (HOMA) index and quantitative sensitivity check (QUICKI) index scores were calculated before metformin treatment and after 12 months of use. Results. After 12 months of metformin treatment, female patients had significant reduction in weight, BMI, and waist circumference after adjusting for age. Metformin use for 12 months resulted in significant reduction in mean fasting blood glucose and HbA1c in females only. Total cholesterol decreased significantly among men only and serum HDL-C showed a significant rise among females only. Serum LDL-C and triglycerides did not change significantly in females and males. Our study did now significant changes in ACTH and cortisol levels in both females and males after metformin treatment. Metformin use resulted in significant increase in luteinizing hormone (LH) and progesterone levels in males, while it was associated with significant increase in prolactin, follicular stimulating hormone (FSH), and dehydroepiandrostenedione-sulphate (DHEA-S) levels and significant decrease in total testosterone level in females. Conclusion. Metformin treatment in females with prediabetes reduces BMI, waist circumference, fasting blood glucose, and HbA1c. The changes in the studied parameters differed significantly according to sex.

A Review on the Antidiabetic Potential of Medicinal Plants

Diabetes mellitus has long been seen as a substantial economic burden on patients, their families, and society. Impairment in blood sugar regulation has major health repercussions. Furthermore, untreated diabetes causes major chronic complications like blindness, renal failure, and heart failure, as well as an increase in associated mortality. New anti-diabetic medicines are being researched to help alleviate this issue. Conventional Anti-diabetic medications are beneficial, several synthetic drugs are available in the market to treat diabetes, but they are costly and come with inevitable adverse effects. Medicinal plants, on the other hand, may serve as an alternate source of anti-diabetic agents. According to the World Health Organization, 80 % of the population in underdeveloped nations still relies on traditional medicines or folk medicines, which are largely made from plants, for disease prevention or treatment. For instance, anti- proliferative, anti-viral, anti-inflammatory and anti-hyperglycemic effects. In order to find a natural anti-diabetic source that comes with less side effects, several studies have been conducted. The aim of this work is to review these studies and highlight the potential of plants when it comes to their anti-diabetic effect.

Omniligase-1-mediated ligation for insulin analog synthesis in solu-tion and on phage surface

The B-chain C-terminal region of insulin has been mutated or modified to achieve improved therapeutic efficacies. For ex-ample, all FDA-approved insulin analogs have altered C-terminal segments, which leads to improved pharmacokinetic prop-erties and provide significant clinical benefits on blood sugar regulation. Nonetheless, there is still no efficient method to synthesize insulin analogs with the altered C-terminal region. Herein, we report a facile synthesis using omniligase-1 to li-gate an insulin core with a peptide segment in high conversion. We further apply this ligation to M13 phage surface modifi-cations and demonstrate that the phage displayed insulin molecules can bind to insulin receptor ectodomain in an insulin-dependent manner. These results pave the way for building phage display insulin library for therapeutic selections and demonstrate the feasibility of using omniligase-1 to display other disulfide-rich peptides and proteins on phage.

Insight in the Recent Application of Polyphenols From Biomass

Biomass polyphenols are bio-active macromolecules with distinct chemical structures in a variety of biomass. In recent years, the study of biomass polyphenols and their application in food and medicine fields has become a research hotspot, which predominantly focuses on the preparation, purification, structural identifications, and measurements of biological activities. Many studies describe methodologies for extraction and application of polyphenols, but comprehensive work to review its physiological activities like drugs and health products are lacking. This paper comprehensively unlocks the bioactivities of antioxidant, antibacterial, antitumor, anticancer, neuroprotection, control of blood sugar, regulation of blood fat, and promotion of gastrointestinal health functions of polyphenols from different biomass sources. This review will serve as an illuminating resource for the global scientific community, especially for those who are actively working to promote the advances of the polyphenols research field.

Prediction of blood Sugar Regulation based on Healthy Boundaries, Ego Boundary and Post-trauma Growth in Patients with Diabetes.

Aims: The aim of this study was prediction of blood sugar regulation based on ego boundary, healthy boundary and post trauma growth in patient with Diabetes. Methods: For this purpose 50 people with diabetes were selected by multistage cluster sampling. The questionnaires used in this study were the post trauma growth inventory (PGI), the ego strength (PIES), and Healthy Boundaries (HB) Questionnaire. Results: Stepwise regression analysis showed that there were a significant positive relationship between blood sugar level (HbA1c) and ego strength, health boundaries and post-trauma growth (PTG). Conclusion: The findings indicate a significant correlation between hyperglycemia and health boundaries, ego strength and post-traumatic growth. This means that controlling and recognizing the boundaries of mental health and post-traumatic emotions prevents high blood (HbA1c) sugar and Type 2 diabetes.

Potential Combination of Tinospora crispa, Andrographis paniculata, Cinamomum burmanii, Syzygium polyanthum and Momordica charantia Extracts Against Intake of Glucose in Muscle Rats-Induced Diabetes Mellitus

Diabetes mellitus is a chronic condition that disturbs the body's blood sugarregulation. This disorder is characterized by a decrease in the ability of bodycells to intake glucose into cells. Due to the failure of cells in glucose intake,glucose buildup occurs in the extracellular, namely in the plasma. Thesemedicinal plants contain quite varied secondary metabolites, where theseplants are rich in flavonoids, alkaloids, terpenes and glycosides. The contentof these secondary metabolite compounds is believed to be rich in antioxidanteffects so that it has the effect of being able to suppress various oxidativestress conditions that cause damage to various organs due to blood sugardysregulation. The effect of Tinospora crispa, Andrographis paniculata,Cinamomum burmanii, Syzygium polyanthum and Momordica charantiaextracts on blood sugar levels and GLUT4 protein expression in muscle tissueshows the potential of the test extract's ability to improve blood glucose intaketo cells so as to maintain blood sugar regulation.

Effect of Noni Fruit Extract (Morinda citrifolia) on Glucose Intake to Diabetes Mellitus White Rat Muscle Tissue

Noni fruit (Morinda citrifolia) is one of the most common plants inIndonesia. This plant is often found in various regions in Indonesia, where theseplants are often in the form of shrubs or wild plants that grow in yards orplantations. This study aims to assess the effect of noni (Morinda citrifolia) fruitextract on blood sugar levels and the expression of GLUT4 protein in muscletissue which shows the potential of the test extract's ability to improve bloodglucose intake to cells so that it can maintain blood sugar regulation. Thisresearch was an experimental study that used white rats as research subject.Induction of diabetes was done by injecting alloxan at a dose of 110 mg/kg BWintraperitoneally; then the white rats were given 10% glucose to drink. Alloxan-induced white rats showed a very significant increase in blood sugar levels,where the use of the drug metformin was able to reduce blood sugar levelssignificantly. In white rats induced with diabetes mellitus, there was a decreasein GLUT4 levels in muscle tissue. The administration of metformin drugs or nonifruit extracts shows the ability to increase levels of GLUT4 protein. In conclusion,noni fruit extract affects lowering blood sugar levels in diabetes mellitus whiterats by increasing glucose intake to cells and tissues.

Effect of Bay Leaf Extract (Syzygium polyanthum) on Blood Sugar Regulation via GLUT4 Protein Regulation in White Rat Muscle Tissue Induced Aloxan

Diabetes mellitus is a chronic condition that disturbs the body's bloodsugar regulation. Bay leaves contain entirely various secondary metabolites,where this plant is rich in flavonoids, alkaloids, terpenes and glycosides. Thisstudy aims to assess the effect of bay leaf extract (Syzygium polyanthum) onblood sugar levels and the expression of GLUT4 protein in muscle tissue. A totalof 30 white rats (Rattus norvegicus) Wistar strain obtained from the EurekaResearch Laboratory (Palembang, Indonesia) weighing between 200 - 250 grams.Bay leaf simplicia was obtained from the Tawangmangu Herbal Research Center,Karanganyar, Indonesia. After 1 week of adaptation, the mice were randomlydivided into the following six groups, each containing 5 animals: Normal controlgroup, diabetes group (negative control), diabetes + metformin group (Met; 45mg / kg), Diabetes + BLE (75 mg/kg), diabetes + BLE group (150 mg / kg) anddiabetes + BLE group (300 mg/kg). Alloxan-induced white rats showed a verysignificant increase in blood sugar levels, where the use of the drug metforminwas able to reduce blood sugar levels significantly even though they had notreached the target blood glucose target of less than 200 mg / dL. The treatmentwith bay leaf extract was able to reduce blood sugar levels significantly. Theadministration of metformin drugs or bay leaf extract showed the ability toincrease the level of GLUT4 protein. In conclusion, bay leaf extract affectsreducing blood sugar levels in diabetes mellitus white rats by increasing glucoseintake to cells and tissues.

The Effects of Sambiloto Leaf Extract (Andrographis peniculata) on Blood Sugar Regulation: an In Vivo Study

Sambiloto (Andrographis peniculata) is one of the most common plants inIndonesia. Sambiloto contains quite varied secondary metabolites, where thisplant is rich in flavonoids, alkaloids, terpenes and glycosides. This study aimsto assess the effect of Sambiloto (Andrographis peniculata) leaf extract on bloodsugar levels and the expression of GLUT4 protein in muscle tissue whichindicates the potential of the test extract's ability to improve blood glucose intaketo cells so that it can maintain blood sugar regulation. The process of extractingsambiloto is carried out by maceration in which 500 grams of simplicia aremacerated with 96% ethanol for 72 hours. After 1 week of adaptation, the micewere randomly divided into the following six groups, each containing 5 animals:Normal control group, diabetes group (negative control), diabetes + metformingroup (Met; 45 mg/kg), Diabetes + ES group (50 mg/kg), diabetes + ES group(100 mg/kg) and diabetes + ES group (200 mg/kg). The treatment with sambilotoextract was able to reduce blood sugar levels significantly, were at the ES 100and 200 mg/kg BW doses it was able to reduce blood sugar levels to reach thetarget below 200 mg/kg BW. The dominant flavonoids in Sambiloto leaf extractare believed to be responsible for the effect of blood glucose regulation. Inconclusion, Sambiloto extract affects lowering blood sugar levels in diabetesmellitus white rats by increasing glucose intake to cells and tissues.

Glucose transporter expression and regulation following a fast in the ruby-throated hummingbird, Archilochus colubris

ABSTRACTHummingbirds, subsisting almost exclusively on nectar sugar, face extreme challenges to blood sugar regulation. The capacity for transmembrane sugar transport is mediated by the activity of facilitative glucose transporters (GLUTs) and their localisation to the plasma membrane (PM). In this study, we determined the relative protein abundance of GLUT1, GLUT2, GLUT3 and GLUT5 via immunoblot using custom-designed antibodies in whole-tissue homogenates and PM fractions of flight muscle, heart and liver of ruby-throated hummingbirds (Archilochus colubris). The GLUTs examined were detected in nearly all tissues tested. Hepatic GLUT1 was minimally present in whole-tissue homogenates and absent win PM fractions. GLUT5 was expressed in flight muscles at levels comparable to those of the liver, consistent with the hypothesised uniquely high fructose uptake and oxidation capacity of hummingbird flight muscles. To assess GLUT regulation, we fed ruby-throated hummingbirds 1 mol l−1 sucrose ad libitum for 24 h followed by either 1 h of fasting or continued feeding until sampling. We measured relative GLUT abundance and concentration of circulating sugars. Blood fructose concentration in fasted hummingbirds declined (∼5 mmol l−1 to ∼0.18 mmol l−1), while fructose-transporting GLUT2 and GLUT5 abundance did not change in PM fractions. Blood glucose concentrations remained elevated in fed and fasted hummingbirds (∼30 mmol l−1), while glucose-transporting GLUT1 and GLUT3 in flight muscle and liver PM fractions, respectively, declined in fasted birds. Our results suggest that glucose uptake capacity is dynamically reduced in response to fasting, allowing for maintenance of elevated blood glucose levels, while fructose uptake capacity remains constitutively elevated promoting depletion of blood total fructose within the first hour of a fast.