Development and testing of nanoparticles delivery for P7C3 small molecule using injury models.

The use of nanoparticles (NPs) has emerged as a potential tool for safe and effective drug delivery. In the present study, we developed small molecule P7C3-based NPs and tested its efficacy and toxicity along with the tissue specific aptamer-modified P7C3 NPs. The P7C3 NPs were prepared using poly (D, L-lactic-co-glycolic acid) carboxylic acid (PLGA-COOH) polymer, were conjugated with skeletal muscle-specific RNA aptamer (A01B P7C3 NPs) and characterized for its cytotoxicity, cellular uptake, and wound healing in vitro.

Cardioprotective Effects of 1-(3,6-Dibromo-carbazol-9-yl)-3-Phenylamino-Propan-2-Ol in Diabetic Hearts via Nicotinamide Phosphoribosyltransferase Activation.

Diabetes is associated with increased cardiac injury and sudden death. Nicotinamide phosphoribosyltransferase (Nampt) is an essential enzyme for the NAD salvage pathway and is dysregulated in diabetes. Nampt activation results in rescued NADH/NAD ratios and provides pharmacological changes necessary for diabetic cardioprotection.

Nampt activator P7C3 ameliorates diabetes and improves skeletal muscle function modulating cell metabolism and lipid mediators.

Background: Nicotinamide phosphoribosyltransferase (Nampt), a key enzyme in NAD salvage pathway is decreased in metabolic diseases, and its precise role in skeletal muscle function is not known. We tested the hypothesis, Nampt activation by P7C3 (3,6-dibromo-α-[(phenylamino)methyl]-9H-carbazol-9-ethanol) ameliorates diabetes and muscle function.

Methods: We assessed the functional, morphometric, biochemical, and molecular effects of P7C3 treatment in skeletal muscle of type 2 diabetic (db/db) mice.

Reversal of heart failure in a chemogenetic model of persistent cardiac redox stress.

We previously described a novel "chemogenetic" animal model of heart failure that recapitulates a characteristic feature commonly found in human heart failure: chronic oxidative stress. This heart failure model uses a chemogenetic approach to activate a recombinant yeast d-amino acid oxidase in rat hearts in vivo to generate oxidative stress, which then rapidly leads to the development of a dilated cardiomyopathy. Here we apply this new model to drug testing by studying its response to treatment with the angiotensin II (ANG II) receptor blocker valsartan, administered either alone or with the neprilysin inhibitor sacubitril.

Chemogenetic generation of hydrogen peroxide in the heart induces severe cardiac dysfunction.

Oxidative stress plays an important role in the pathogenesis of many disease states. In the heart, reactive oxygen species are linked with cardiac ischemia/reperfusion injury, hypertrophy, and heart failure. While this correlation between ROS and cardiac pathology has been observed in multiple models of heart failure, the independent role of hydrogen peroxide (HO) in vitro and in vivo is unclear, owing to a lack of tools for precise manipulation of intracellular redox state.

Corticosteroids and aldose reductase inhibitor Epalrestat modulates cardiac action potential via Kvβ1.1 (AKR6A8) subunit of voltage-gated potassium channel.

We previously demonstrated the role of Kvβ1.1 subunit of voltage-activated potassium channel in heart for its sensory roles in detecting changes in NADH/NAD and modulation of ion channel. However, the pharmacological role for the association of Kvβ1 via its binding to ligands such as cortisone and its analogs remains unknown.

An Early Passage Human Isolate of Kyasanur Forest Disease Virus Shows Acute Neuropathology in Experimentally Infected CD-1 Mice.

Background: Kyasanur Forest disease virus (KFDV) is a tick-borne Flavivirus that causes a severe illness in humans. Disease spectrum can vary from subclinical infection to fatal cases with hemorrhagic complications. The pathology of KFDV remains incompletely understood.

Deletion of Kvβ1.1 subunit leads to electrical and haemodynamic changes causing cardiac hypertrophy in female murine hearts.

What is the central question of this study? The goal of this study was to evaluate sex differences and the role of the potassium channel β1 (Kvβ1) subunit in the heart. What is the main finding and its importance? Genetic ablation of Kvβ1.1 in females led to cardiac hypertrophy characterized by increased heart size, prolonged monophasic action potentials, elevated blood pressure and increased myosin heavy chain α (MHCα) expression.

Cardioprotective Activity of Pongamia pinnata in Streptozotocin-Nicotinamide Induced Diabetic Rats.

Pongamia pinnata (L.) Pierre has been used in traditional medicine for the treatment for diabetes and metabolic disorder. The aim of this study was to investigate the effect of petroleum ether extract of the stem bark of P.

Animal models for some important RNA viruses of public health concern in SEARO countries: viral hemorrhagic fever.

Viral hemorrhagic fevers (VHFs) are major public health problems in the South-East Asia Regional (SEAR) countries. VHFs are a group of illnesses; that are caused by four families of viruses, viz. Arenaviridae, Bunyaviridae, Filoviridae and Flaviviridae.

L-glutamine supplementation prevents the development of experimental diabetic cardiomyopathy in streptozotocin-nicotinamide induced diabetic rats.

The objective of the present investigation was to evaluate the effect of L-glutamine on cardiac myopathy in streptozotocin-nicotinamide induced diabetic rats. Diabetes was induced in overnight fasted Sprague Dawely rats by using intraperitonial injection of streptozotocin (55 mg/kg). Nicotinamide (100 mg/kg, i.

Effect of concomitant administration of L-glutamine and cycloart-23-ene-3β, 25-diol (B2) with sitagliptin in GLP-1 (7-36) amide secretion, biochemical and oxidative stress in streptozotocin - nicotinamide induced diabetic Sprague Dawley rats.

Previously we have reported that, cycloart-23-ene-3β, 25-diol (called as B2) and L-glutamine stimulated glucagon like peptide-1 (GLP-1) (7-36) amide secretion diabetic rats. The objective of present investigation was to investigate the concomitant administration of cycloart-23-ene-3β, 25-diol+sitagliptin and L-glutamine+sitagliptin in streptozotocin - nicotinamide induced diabetic Sprague Dawley. Type 2 diabetes was induced in overnight fasted male Sprague Dawley rats pre-treated with nicotinamide (100 mg/kg, i.

Effect of hydroalcoholic extract of Hibiscus rosa sinensis Linn. leaves in experimental colitis in rats.

Objective: To elucidate the ameliorative effect of hydroalcoholic extract of leaves of Hibiscus rosa sinensis (HRS) in acetic acid induced experimental colitis in male wistar rats.

Methods: The animals were administered with 2 mL acetic acid (4%) via intra rectal. The animals were divided into various treatment groups (n=6).

Oral L-glutamine increases active GLP-1 (7-36) amide secretion and improves glycemic control in stretpozotocin-nicotinamide induced diabetic rats.

L-glutamine is a non-essential amino acid. It decreased blood sugar, stimulated insulin secretion in type 2 diabetic patients. The objective of the present investigation was to evaluate L-glutamine increases glucagon like peptide-1 (GLP-1) (7-36) amide secretion in streptozotocin-nicotinamide (STZ-NTM) induced diabetic Sprague Dawley rats.

Cycloart-23-ene-3β, 25-diol stimulates GLP-1 (7-36) amide secretion in streptozotocin-nicotinamide induced diabetic Sprague Dawley rats: a mechanistic approach.

In previous study, we have reported cycloart-23-ene-3β, 25-diol is an active antidiabetic constituent isolated from stem bark of Pongamia pinnata (Linn.) Pierre. The objective of the present investigation was to evaluate cycloart-23-ene-3β, 25-diol stimulates glucagon like peptide-1 (GLP-1) (7-36) amide secretion in streptozotocin-nicotinamide induced diabetic Sprague Dawley rats.

In vitro antioxidant and antimicrobial activity cycloart-23-ene-3β,-25-diol (B2) isolated from Pongamia pinnata (L. Pierre).

Objective: To evaluate the in-vitro antioxidant and antimicrobial activity of cycloart-23-ene-3β, 25-diol (called as B2) isolated from stem bark of Pongamia pinnata.

Methods: In vitro antioxidant activity of B2 was determined by methods for determination of DPPH radical scavenging, reducing power, superoxide anion radical scavenging, hydroxyl radical scavenging, hydrogen peroxide scavenging, metal chelating and nitric oxide radical scavenging at the doses of 20, 40, 60, 80 and 100 μg/mL, respectively. β-tocopherol with same concentration was used as a standard antioxidant.

Antidiabetic potential of α-amylase inhibitor from the seeds of Macrotyloma uniflorum in streptozotocin-nicotinamide-induced diabetic mice.

Context: Macrotyloma uniflorum (Lam.) Verdc. (Leguminosae) seeds, known as the poor man's pulse crop in India, have been used as a food and also used in the traditional method for treatment of kidney stones, diabetes, obesity, etc.

Antidiabetic activity of cycloart-23-ene-3beta, 25-diol (B2) isolated from Pongamia pinnata (L. Pierre) in streptozotocin-nicotinamide induced diabetic mice.

The aim of the present investigation was to evaluate the antidiabetic activity of cycloart-23-ene-3beta, 25-diol (called as B2) isolated from stem bark of Pongamia pinnata in streptozotocin-nicotinamide induced diabetic mice. Diabetes was induced in mice by injecting streptozotocin (200mg/kg, i.p.

Investigation of antihyperglycaemic activity of aqueous and petroleum ether extract of stem bark of Pongamia pinnata on serum glucose level in diabetic mice.

Aim Of The Study: The aim of the study was to evaluate the antihyperglycaemic activity of aqueous (PPSB-AQE) and petroleum ether (PPSB-PEE) extract of stem bark Pongamia pinnata in alloxan induced diabetic mice.

Materials And Methods: Diabetes was induced in mice by alloxan (80 mg/kg, i.v.

Acute and chronic diuretic effect of ethanolic extract of leaves of Cocculus hirsutus (L.) Diles in normal rats.

Objectives: The objective of this study was to evaluate the acute and chronic diuretic effect of the ethanolic extract of the leaves of Cocculus hirsutus (L.) Diles.

Methods: The ethanolic extract was administered (100, 200 and 400 mg/kg, p.

Interaction of Aqueous Extract of Pleurotus pulmonarius (Fr.) Quel-Champ. with Glyburide in Alloxan Induced Diabetic Mice.

Mushrooms are low calorie food with very little fat and are highly suitable for obese persons. With no starch and very low sugars, they are the 'delight of the diabetics'. Combination of herbal drugs (or isolated phytochemicals) is found to be beneficial in certain diseases when given along with conventional drugs.