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Comparison of the effectiveness of two fluences using long-pulsed Nd:YAG laser in the treatment of striae distensae. Histological and morphometric evaluation

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Abstract

Striae distensae are common undesirable skin lesions of significant aesthetic concern. To compare the efficacy of two fluences (75 and 100 J/cm2) of long-pulsed Nd:YAG laser in the treatment of striae. Forty-five patients (Fitzpatrick skin types III–V) aged between 11 and 36 years with striae (23 patients with rubra type and 22 with alba type) were enrolled in the study. Each stria was divided into three equal sections, whereby the outer sections were treated with long-pulsed 1064 nm Nd:YAG laser, at a fluence of 75 or 100 J/cm2, and fixed laser settings of 5 mm spot size and 15 ms pulse duration. The middle section was an untreated control. All subjects received four treatments at 3 weeks interval. Three 2-mm punch biopsies were taken from six subjects, all of the same stria, one before treatment and the other two from the outer sections, 3 months after the last session. Paraffin-embedded skin sections were subjected to histological and quantitative morphometric studies for collagen and elastic fibres. Results were assessed clinically through photographic evaluation and were considered satisfactory for both doctors and patients. A significant improvement in appearance of striae alba using 100 J/cm2 was found while striae rubra improved more with 75 J/cm2. Histologically, collagen and elastin fibres increased in posttreatment samples. A satisfactory improvement in striae distensae lesions was seen through clinical and histological evaluation. Thus, long-pulsed Nd:YAG laser is a safe and effective module of laser treatment for these common skin lesions.

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Authors and Affiliations

  1. Department of Dermatology and Venereology, NRC, Cairo, Egypt

    Mohamed L. Elsaie, Maha S. Hussein & Hanaa M. Emam

  2. Department of Dermatology, NILES, Cairo, Egypt

    Abeer A. Tawfik & Hisham A. Shokeir

  3. Department of Pathology, NRC, Cairo, Egypt

    Manal A. Badawi

  4. Department of Dermatology, Cairo university, Cairo, Egypt

    Marwa M. Fawzy

Authors
  1. Mohamed L. Elsaie
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  2. Maha S. Hussein
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  3. Abeer A. Tawfik
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  4. Hanaa M. Emam
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  5. Manal A. Badawi
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  6. Marwa M. Fawzy
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  7. Hisham A. Shokeir
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Correspondence to Mohamed L. Elsaie.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with human participants or animal performed by any of the authors.

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Informed consent was obtained from all individual participants included in the study.

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Elsaie, M.L., Hussein, M.S., Tawfik, A.A. et al. Comparison of the effectiveness of two fluences using long-pulsed Nd:YAG laser in the treatment of striae distensae. Histological and morphometric evaluation. Lasers Med Sci 31, 1845–1853 (2016). https://doi.org/10.1007/s10103-016-2060-2

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  • DOI: https://doi.org/10.1007/s10103-016-2060-2

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