To improve the transdermal bioavailability and safety of alendronate (ALN), a nitrogen-containing bisphosphonate, we developed self-dissolving microneedle arrays (MNs), in which ALN is loaded only at the tip portion of micron-scale needles by a dip-coating method (ALN(TIP)-MN). We observed micron-scale pores in rat skin just after application of ALN(TIP)-MN, indicating that transdermal pathways...

Treatment of C57BL/6 mice with one transfusion of BALB/c spleen cells and a brief course of anti-CD154 (anti-CD40 ligand) antibody permits BALB/c islet grafts to survive indefinitely and BALB/c skin grafts to survive for approximately 50 days without further intervention. We now report adaptation of this protocol to the transplantation of islet and skin xenografts. We observed prolonged surviva...

OBJECTIVE(S) Skin extracellular matrix, which contains type I and type III collagens, is involved in skin development. The aim of this study was to investigate type III collagen distribution pattern as well as its changes during pre and post-natal skin morphogenesis in rats. MATERIALS AND METHODS Ventral skins of Wistar rat embryos at different stages from 10 to 20 gestational day (E10-E20) a...

During the time of tissue repair that ensues subsequent to tissue injury, blood vessel wall fibronectin increases concomitantly with endothelial proliferation and angiogenesis. However, the source of this blood vessel fibronectin had not been delineated. In this report we have demonstrated that microvascular fibronectin is produced in situ by the proliferating vessels surrounding excisional wou...

This study investigated the effects of diabetic rats induced by streptozotocin (STZ) on acetone concentration emanating from the tail of a rat. Experiments were carried out with male Wistar rats (9 weeks of age, 220 - 250 g body weight). Glucose concentration in the blood was 10.8 ± 0.7 mmol/l for the control group and 39.6 ± 2.4 mmol/l for the diabetic group. β-Hydroxybutyrate concentration in...

Collagen and silicone are substances commonly used as dermal filler in a number of beauty procedures. However, sometimes these chemicals cause unwanted side effects on the skin. The purpose this research is to analyse effect collagen subdermal injection rat skin model for human Materials 9 Wistar rats (Rattus norvegicus) divided into three groups with 3 each group. first control group (K) not g...

topical drug dosage forms such as ointments and creams can be easily removed through wetting, movement and contact. the new bioadhesive formulations with enhanced local anesthetic effects are needed for topical administration. the adhesive capacity of hydroxypropyl methylcellulose (hpmc) was determined by measuring the maximum detachment force and the adhesion work with an auto peeling tester. ...