Histological study on the effect of nicotine on adult male guinea pig thin skin

• 영문명: Histological study on the effect of nicotine on adult male guinea pig thin skin
• 발행기관: 대한해부학회
• 저자명: Sohair A. Eltony Safaa S. Ali
• 간행물 정보: 『Anatomy and Cell Biology』Vol.50(3), 187~199쪽, 전체 13쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2017.09.30

영문 초록

obacco smoking has been identified as an important factor in premature skin aging to detect the histological changes occurred in adult male guinea pig thin skin under the influence of low and high doses of nicotine; which constitutes approximately 0.6%–3.0% of the dry weight of tobacco. Fifteen adult male pigmented guinea pigs were equally divided into three groups: group I, control; group IIA, low dose nicotine treated; 3 mg/kg subcutaneously for 4 weeks; and group IIB, high dose nicotine treated; 6 mg/kg subcutaneously for 4 weeks. Specimens from the back thin skin were processed for light and electron microscopy. Nicotine administration revealed flattened dermo-epidermal junction and reduced rete ridges formation. Collagen bundles were disorganized with increased spaces between them. A reduction in the amount of elastic fibers in the dermis were also observed compared to group I. Ultrastructurally, keratinocytes had hyperchromatic nuclei, intracytoplasmic vacuoles, disruption of desmosomal junctions, irregular tonofilaments distribution, and increased inter-cellular spaces. These changes were more pronounced with high dose nicotine administration. The epidermal thickness was reduced in low dose nicotine administration. But, high dose nicotine administration revealed increased epidermal thickness compared to the control group. Nicotine induced structural changes of adult male guinea pig thin skin. These changes were more pronounced with high dose nicotine administration.

키워드

Nicotine Thin skin Guinea pigs