[en] BACKGROUND AND OBJECTIVE: Striae distensae of pregnancy is a common finding. There is currently a lack of information about the rheological characteristics of such lesions. The purpose of this study was to compare the mechanical properties of striae distensae before and after delivery. PATIENTS AND METHODS: A total of 79 primigravid entered the study. Rheological properties of skin were evaluated in vivo using a Cutometer equipped with a 2-mm probe. RESULTS: Mechanical properties of striae distensae developing during pregnancy resembled those of the surrounding skin. By contrast, significant differences were yielded during post-partum. Extensibility of striae distensae was increased although parameters of elasticity remained normal. CONCLUSIONS: Rheological properties of striae distensae of pregnancy vary in time. This might reflect the changes in hormones and in the mechanical stresses normally setting the skin under tension.
Disciplines :
Dermatology
Author, co-author :
Henry, Frédérique ; Université de Liège - ULiège > Département des sciences cliniques > Département des sciences cliniques
Cua AGB, Wilhelm KP, Maibach HI. Elastic properties of skin: relation to age, sex and anatomical region. Arch Dermatol Res 1990; 282: 283-288.
Barel AO, Courage W, Clarys P. Suction method for measurement of skin mechanical properties: the Cutometer. In Handbook of Non-invasive Methods and the Skin. Boca Raton: CRC Press, 1995: 335-340.
Piérard GE, Nikkels-Tassoudji N, Pierard-Franchimont C. Influence of the test area on the mechanical properties of skin. Dermatology 1995; 191: 9-15.
Viatour M, Henry F, Piérard GE. A computerized analysis of intrinsic forces in the skin. Clin Exp Dermatol 1995; 20: 308-312..
Piérard GE, Letawe C, Dowlati A, Pierard-Franchimont C. Effect of hormone replacement therapy for menopause on the mechanical properties of skin. J Am Geriatr Soc 1995; 43: 661-665.
Jemec GBE, Serup J. Epidermal hydratipn and skin mechanics. The relationship between electrical capacitance and the mechanical properties of human skin in vivo. Acta Dermatol Venereal 1990; 70: 245-247.
Auriol F, Vaillant L, Machet L, et al. Effects of shorttime hydration on skin extensibility. Acta Dermatol Venereal 1993; 73: 344-347.
Agache P, Ovide MT, Kienzier JL, Laurent R. Mechanical factors in striae distensae. In Striae Dtstensae. Milan: Symposium Publ Div Bocades, 1976: 87-96.
Klebanoff SJ. Oxygen intermediates and microbicidal events. In Van Furth R, ed., Mononuclear Phagocytes: Functional Aspects. Part II. Boston: Martinus Nijhoft Publishers, 1980: 1105-1111.
Babior BM. The respiratory burst of phagocytes. J Clin Invest 1984; 73: 599-605.
Rossi SJ: The Oz-forming NADPH oxidase of the phagocytes nature: mechanisms and functions. Biochim Biophys Acta 1986; 853: 65-89.
McCord JM, Fridovich I. The biology and pathology of oxygen radicals. Ann Intern Med 1978; 89: 111-12.7.
Gravaclese EM. In Fitzpatrick TB, Eisen AZ, Wolff K, eds, Dermatology in General Medicine, 4th edn. New York: McGraw-Hill, 1994: 1173-1177.
Tosca N, Stratigos JD. Possible pathogenic mechanisms in allergic cutaneous vasculitis. Int J Dermatol 1988; 27: 291-196.
O'Duffy JD, Lehner T, Barnes CG. Summary of the Third International Conference on Behcet's Disease, Tokyo, Japan, October 13-14, 1981. J Rheumatol 1983; 10: 154-158.
Ono S, Onimaru T, Kawakami K, et al. Impaired granulocyte chemotaxis and increase circulating immunocomplexes in Kawasaki disease. J Pediatr 1985; 106: 567-570.
Casellas AM, Prat A, Liera A, et al. Increased Superoxide production by polymorphonuclear leukocytes in systemic lupus erythematosus. Clin Exp Rheumatol 1991; 9: 511-514.
Marhoffer W, Stein M, Federlin K. Impaired function of polymorphonuclear neutrophilic granulocytes in rheumatoid arthritis. Infect Immun 1993; ai: 15-16.
Levy R, Rotrosen D, Nagauker O et al. Induction of respiratory burst in HL-6o cells: correlation of activity and protein expression. J Immunol 1990; 145: 1595-1601.
Levy R, Malech HL, Rotrosen D. Production of myeloid cell cytosols functionally and immunochemically deficient in the 47 KDa or 67 KDa NADPH oxidase cytosolic factors. Biochem Biophys Res Commun 1990; 170: 1114-1120.
Levy R, Schlaeffer F, Keynan A, et al. Increased neutrophil function induced by bile duct ligation in a rat model. Hepatology 1993; 17: 908-914.
Miyachi Y, Yanase K, Imamura S, Niwa Y. Increased hydroxylradical generation by normal polymorphonuclear leukocytes incubated in sera from patients with leukocytoclastic vasculitis. Arch Dermatol 1981; 274: 65-71.
Baehner RL, Boxer LA, Alien JM, Da vis J. Autooxidation as a basis for altered function by polymorphonuclear leukocytes. Blood 1977; 50: 327-335
Driesh P, Simon M, Gomez RS, Horenstein OP. Impairment of some granulocyte functions in Sweet's syndrome. Acta Derm Venereal (Stockholm) 1992; 72: 109-111.
