Journal
IET NANOBIOTECHNOLOGY
Volume 14, Issue 8, Pages 680-687Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-nbt.2020.0079
Keywords
nanoparticles; transmission electron microscopy; cellular biophysics; sugar; nanomedicine; nanofabrication; zinc compounds; molecular biophysics; biochemistry; tumours; enzymes; biomedical materials; biological organs; blood; diseases; patient treatment; II-VI semiconductors; wide band gap semiconductors; scanning electron microscopy; sol-gel processing; semiconductor growth; molecular mechanisms; histopathological mechanisms; zinc oxide nanoparticles; experimental diabetic rats; hypoglycaemic effect; antioxidant effect; control group; diabetic group; CD4+; CD8+T cells; glucose transporter type-4; control rats; GLUT-4 expression; streptozotocin-induced diabetic rats; biochemical mechanisms; safe antidiabetic agent; inflammation response; sol-gel method; transmission electron microscopy; scanning electron microscopy; SEM; TEM; superoxide dismutase; glutathione peroxidase; insulin levels; haemoglobin A1c; differentiation 4+T cells; tumour necrosis factor; interleukin-6; blood glucose control; pancreas functions; glycaemic status; therapeutic effect; pancreatic tissues; Langerhans islets; insulin-secreting granules; ZnO
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This study evaluated the biochemical, molecular, and histopathological mechanisms involved in the hypoglycaemic effect of zinc oxide nanoparticles (ZnONPs) in experimental diabetic rats. ZnONPs were prepared by the sol-gel method and characterised by scanning and transmission electron microscopy (SEM and TEM). To explore the possible hypoglycaemic and antioxidant effect of ZnONPs, rats were grouped as follows: control group, ZnONPs treated group, diabetic group, and diabetic + ZnONPs group. Upon treatment with ZnONPs, a significant alteration in the activities of superoxide dismutase, glutathione peroxidase, and the levels of insulin, haemoglobin A1c, and the expression of cluster of differentiation 4+ (CD4+), CD8+ T cells, glucose transporter type-4 (GLUT-4), tumour necrosis factor, and interleukin-6 when compared to diabetic and their control rats. ZnONPs administration to the diabetic group showed eminent blood glucose control and restoration of the biochemical profile. This raises their active role in controlling pancreas functions to improve glycaemic status as well as the inflammatory responses. Histopathological investigations showed the non-toxic and therapeutic effect of ZnONPs on the pancreas. TEM of pancreatic tissues displayed restoration of islets of Langerhans and increased insulin-secreting granules. This shows the therapeutic application of ZnONPs as a safe anti-diabetic agent and to have a potential for the control of diabetes.
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