naphthoquinones and Diabetes-Mellitus--Type-1

Topics: Adolescent; Age Factors; Albuterol; Androstadienes; Anticonvulsants; Asthma; Atovaquone; Attention Deficit Disorder with Hyperactivity; Beclomethasone; Carbamazepine; Child; Delayed-Action Preparations; Diabetes Mellitus, Type 1; Drug Approval; Drug Combinations; Drug Delivery Systems; Drug Therapy; Epilepsies, Partial; Fluticasone-Salmeterol Drug Combination; HIV Protease Inhibitors; Humans; Insulin; Insulin Glargine; Insulin, Long-Acting; Lopinavir; Methylphenidate; Naphthoquinones; Nebulizers and Vaporizers; Oxcarbazepine; Pediatrics; Proguanil; Pyrimidinones; Ritonavir; United States

Diabetes is one of the major health issues globally. Type 1 diabetes mellitus develops due to the destruction of pancreatic β cells. Mesenchymal stem cells (MSCs) having remarkable self-renewal and differentiation potential, can regenerate β cells. MSCs preconditioned with bioactive small molecules possess enhanced biological features and therapeutic potential under in vivo environment. Interestingly, compounds of naphthoquinone class possess antidiabetic and anti-inflammatory properties, and can be explored as potential candidates for preconditioning MSCs. This study analyzed the effect of lawsone-preconditioned human umbilical cord MSCs (hUMSCs) on the regeneration of β cells in the streptozotocin (STZ)-induced Type 1 diabetes (T1D) rats. hUMSCs were isolated and characterized for the presence of surface markers. MSCs were preconditioned with optimized concentration of lawsone. T1D rat model was established by injecting 50 mg/kg of STZ intraperitoneally. Untreated and lawsone-preconditioned hUMSCs were transplanted into the diabetic rats via tail vein. Fasting blood sugar and body weight were monitored regularly for 4 weeks. Pancreas was harvested and β cell regeneration was evaluated by hematoxylin and eosin staining, and gene expression analysis. Immunohistochemistry was also done to assess the insulin expression. Lawsone-preconditioned hUMSCs showed better anti-hyperglycemic effect in comparison with untreated hUMSCs. Histological analysis presented the regeneration of islets of Langerhans with upregulated expression of βcell genes and reduced expression of inflammatory markers. Immunohistochemistry revealed strong insulin expression in the preconditioned hUMSCs compared with the untreated hUMSCs. It is concluded from the present study that lawsone-preconditioned hMSCs were able to exhibit pronounced anti-hyperglycemic effect in vivo compared with hUMSCs alone.

Topics: Animals; Diabetes Mellitus, Experimental; Diabetes Mellitus, Type 1; Humans; Hypoglycemic Agents; Insulin; Insulin-Secreting Cells; Mesenchymal Stem Cell Transplantation; Mesenchymal Stem Cells; Naphthoquinones; Rats

Diabetes mellitus is one of the most public metabolic disorders. It is mainly classified into type 1 and type 2. Echinochrome is a pigment from sea urchins that has antioxidant, anti-microbial, anti-inflammatory and chelating abilities.. The present study aimed to investigate the anti-diabetic mechanisms of echinochrome pigment in streptozotocin-induced diabetic rats.. Thirty six male Wistar albino rats were divided into two main groups, type 1 diabetes and type 2 diabetes groups. Each group was divided into 3 subgroups (6 rats/subgroup); control, diabetic and echinochrome groups. Diabetic model was induced by a single dose of streptozotocin (60mg/kg, i.p) for type 1 diabetes and by a high fat diet for 4weeks before the injection with streptozotocin (30mg/kg, i.p) for type 2 diabetes. Diabetic groups were treated orally with echinochrome extract (1mg/kg body weight in 10% DMSO) daily for 4weeks.. Echinochrome groups showed a reduction in the concentrations of glucose, MDA and the activities of arginase, AST, ALT, ALP and GGT. While it caused general increase in the levels of insulin, TB, DB, IB, NO and the activities of G6PD, GST, GPx, SOD and GSH. The histopathological investigation showed partial restoration of pancreatic islet cells and clear improvement in the hepatic architecture.. The suggested mechanism of Ech action in the reduction of diabetic complications in liver involved two pathways; through the hypoglycemic activity and the antioxidant role of Ech.

Topics: Animals; Blood Glucose; Diabetes Complications; Diabetes Mellitus, Experimental; Diabetes Mellitus, Type 1; Diabetes Mellitus, Type 2; Diet, High-Fat; Islets of Langerhans; Liver Diseases; Liver Function Tests; Male; Malondialdehyde; Naphthoquinones; Oxidative Stress; Rats; Rats, Wistar