Effects of diabetes and/or hypercholesterolemia on skin development of rat fetuses
| Autor: | Yosra A. Fouda, Ahmed S. Yonis, Soad A Khalifa, Hassan I. El-Sayyad |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Keratinocytes
medicine.medical_specialty Endocrinology Diabetes and Metabolism Hypercholesterolemia Epidermal cell differentiation Biology Diabetes Mellitus Experimental Cholesterol Dietary Microscopy Electron Transmission Pregnancy Internal medicine Diabetes mellitus medicine Animals Rats Wistar Skin Fetus Nutrition and Dietetics Genome integumentary system Epidermis (botany) Proteins Cell Differentiation Streptozotocin Hair follicle medicine.disease Rats Pregnancy Complications medicine.anatomical_structure Endocrinology In utero Vacuoles Microscopy Electron Scanning DNA fragmentation Female Epidermis Hair Follicle medicine.drug DNA Damage |
| Zdroj: | Nutrition (Burbank, Los Angeles County, Calif.). 28(6) |
| ISSN: | 1873-1244 |
| Popis: | Objective To investigate the effects of diabetes and/or hypercholesterolemia on skin development during in utero life at 15, 17 & 19 days old. Methods Sixty pregnant female albino Wistar rats were arranged into three groups: control, diabetic (single i.p. 60 mg streptozotocin/kg B.wt) and hypercholesterolemic (diet supplement 3% cholesterol 6 week prior to conception and throughout gestation). Pregnant rats were sacrificed at 15, 17 & 19 days prenatal). Vibrissae skin biopsies were removed and allowed for scanning (SEM), light, and transmission electron microscopic (TEM) investigation. Also, DNA fragmentation and sodium dodecyl polyacrylamides gel electrophoresis (SDS-PAGE) were carried out. Results Scanning electron microscopic observations revealed retarded hair follicle growth and deformations of their pattern structure. At light microscopic level, skin exhibited decreased epidermal cornification, as well as degeneration of hair follicles in fetuses of both diabetic and hypercholesterolemic groups. Transmission electron microscopy revealed abundant vacuolar spaces in the epidermis. Degenerative phases become more abundant in keratinocytes as well as in stratum germinativum cells. Fetal skin possessed altered protein expression and missing bands as well as separation of genomic DNA to several degraded bands in skin of 15-, 17-, and 19-day-old, maternally diabetic and/or hypercholesterolemic fetuses. Conclusion These findings showed that maternal diabetes and/or hypercholesterolemia increased average deformation of hair follicles, vacuolation, and degeneration of epidermal cell layers. The observed findings resulted from altered protein expression and increased DNA fragmentation, which, in turn, disrupt epidermal cell differentiation. |
| Databáze: | OpenAIRE |
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