{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T21:18:34Z","timestamp":1777929514726,"version":"3.51.4"},"reference-count":18,"publisher":"SAGE Publications","issue":"2","license":[{"start":{"date-parts":[[2017,2,1]],"date-time":"2017-02-01T00:00:00Z","timestamp":1485907200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Photomedicine and Laser Surgery"],"published-print":{"date-parts":[[2017,2]]},"abstract":"<jats:p>\n                    <jats:bold>\n                      <jats:italic toggle=\"yes\">Background and objectives:<\/jats:italic>\n                    <\/jats:bold>\n                    The most common injury to the heart valve with rheumatic involvement is mitral stenosis, which is the reason for a big number of cardiac operations in Brazil. Commissurotomy is the traditional technique that is still widely used for this condition, although late postoperative restenosis is concerning. This study's purpose was to compare the histological findings of porcine cusp mitral valves treated\n                    <jats:italic toggle=\"yes\">in vitro<\/jats:italic>\n                    with commissurotomy with a scalpel blade to those treated with high-power laser (HPL) cutting, using appropriate staining techniques.\n                    <jats:bold>\n                      <jats:italic toggle=\"yes\">Materials and methods:<\/jats:italic>\n                    <\/jats:bold>\n                    Five mitral valves from healthy swine were randomly divided into two groups: Cusp group (G1), cut with a scalpel blade (\n                    <jats:italic toggle=\"yes\">n<\/jats:italic>\n                    \u2009=\u20095), and Cusp group (G2), cut with a laser (\n                    <jats:italic toggle=\"yes\">n<\/jats:italic>\n                    \u2009=\u20095). G2 cusps were treated using a diode laser (\u03bb\u2009=\u2009980\u2009nm, power\u2009=\u20099.0\u2009W, time\u2009=\u200912\u2009sec, irradiance\u2009=\u20095625\u2009W\/cm\n                    <jats:sup>2<\/jats:sup>\n                    , and energy\u2009=\u2009108\u2009J).\n                    <jats:bold>\n                      <jats:italic toggle=\"yes\">Results:<\/jats:italic>\n                    <\/jats:bold>\n                    In G1, no histological change was observed in tissue. A hyaline basophilic aspect was focally observed in G2, along with a dark red color on the edges and areas of lower birefringence, when stained with hematoxylin\u2013eosin, Masson's trichrome, and Sirius red. Further, the mean distances from the cutting edge in cusps submitted to laser application and stained with Masson's trichrome and Sirius red were 416.7 and 778.6\u2009\u03bcm, respectively, never overcoming 1\u2009mm in length.\n                    <jats:bold>\n                      <jats:italic toggle=\"yes\">Conclusions:<\/jats:italic>\n                    <\/jats:bold>\n                    Thermal changes were unique in the group submitted to HPL and not observed in the cusp group cut with a scalpel blade. The mean distance of the cusps' collagen injury from the cutting edge was less than 1\u2009mm with laser treatment. Additional studies are needed to establish the histological evolution of the laser cutting and to answer whether laser cutting may avoid valvular restenosis better than blade cutting.\n                  <\/jats:p>","DOI":"10.1089\/pho.2015.3993","type":"journal-article","created":{"date-parts":[[2016,11,29]],"date-time":"2016-11-29T17:27:01Z","timestamp":1480440421000},"page":"87-91","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Descriptive Analysis of\n                    <i>In Vitro<\/i>\n                    Cutting of Swine Mitral Cusps: Comparison of High-Power Laser and Scalpel Blade Cutting Techniques"],"prefix":"10.1177","volume":"35","author":[{"given":"Nathali Cordeiro","family":"Pinto","sequence":"first","affiliation":[{"name":"University of S\u00e3o Paulo","place":["Brazil"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pablo Maria Alberto","family":"Pomerantzeff","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo","place":["Brazil"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alessandro","family":"Deana","sequence":"additional","affiliation":[{"name":"University Nove de Julho","place":["Brazil"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Denise","family":"Zezell","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo","place":["Brazil"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Carolina","family":"Benetti","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo","place":["Brazil"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vera Demarchi","family":"Aiello","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo","place":["Brazil"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luciana Almeida","family":"Lopes","sequence":"additional","affiliation":[{"name":"Research and Education Center for Phototherapy in Health Sciences","place":["Brazil"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fabio Biscegli","family":"Jatene","sequence":"additional","affiliation":[{"name":"University of S\u00e3o Paulo","place":["Brazil"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. Cristina","family":"Chavantes","sequence":"additional","affiliation":[{"name":"University Nove de Julho","place":["Brazil"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2017,2]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.2147\/CLEP.S12977"},{"key":"e_1_3_3_3_2","first-page":"1007","article-title":"Rheumatic heart disease: clinical and immunological follow-up","volume":"3","author":"Sampaio RO","year":"2007","unstructured":"Sampaio RO, , Fae KC, , Demarchi LMF, et al. Rheumatic heart disease: clinical and immunological follow-up. Vasc Health Risk Manag, 2007; 3:1007\u20131017.","journal-title":"Vasc Health Risk Manag"},{"key":"e_1_3_3_4_2","first-page":"1583","article-title":"Proinflammatory cytokines play a role in the progression and maintenance of valvular lesions","volume":"165","author":"Guilherme L","year":"2004","unstructured":"Guilherme L, , Cury P, , Demarchi LMF, et al. Proinflammatory cytokines play a role in the progression and maintenance of valvular lesions. Am J Pathol, 2004; 165:1583\u20131591.","journal-title":"Am J Pathol"},{"key":"e_1_3_3_5_2","first-page":"185","article-title":"Mitral valve repair: seventeen years experience","volume":"14","author":"Pomerantzeff PMA","year":"1999","unstructured":"Pomerantzeff PMA, , Brand\u00e3o CMA, , Faber CM, , Fonseca MH, , Puig LB, , Grinberg M, et al. Mitral valve repair: seventeen years experience. Rev Bras Cir Cardiovasc, 1999; 14:185\u2013190.","journal-title":"Rev Bras Cir Cardiovasc"},{"key":"e_1_3_3_6_2","doi-asserted-by":"crossref","first-page":"305","DOI":"10.1590\/S1807-59322005000400008","article-title":"Mitral valve annuloplasty with a bovine pericardial strip","volume":"60","author":"Pomerantzeff PMA","year":"2005","unstructured":"Pomerantzeff PMA, , Brand\u00e3o CMA, , Albuquerque JMA, , Pomerantzeff PY, , Takeda F, , Oliveira SA. Mitral valve annuloplasty with a bovine pericardial strip. 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