Assessment of renal fibrosis and anti‐fibrotic agents using a novel diagnostic and stain‐free second‐harmonic generation platform
Current histological measurement techniques for interstitial collagen, the basis of interstitial fibrosis, are semi‐quantitative at best and only provide a ratio of collagen levels within tissues. The Genesis200 imaging system and supplemental image analysis software, FibroIndex from HistoIndex, is...
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| Veröffentlicht in: | The FASEB journal 2021-05, Vol.35 (5), p.e21595-n/a |
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| creator | Bhuiyan, Sadman Shen, Matthew Chelvaretnam, Sharenya Tan, Andre Y. Ho, Gideon Hossain, Mohammed Akhter Widdop, Robert E. Samuel, Chrishan S. |
| description | Current histological measurement techniques for interstitial collagen, the basis of interstitial fibrosis, are semi‐quantitative at best and only provide a ratio of collagen levels within tissues. The Genesis200 imaging system and supplemental image analysis software, FibroIndex from HistoIndex, is a novel, automated platform that uses second‐harmonic generation (SHG) for imaging and characterization of interstitial collagen deposition and additional characteristics, in the absence of any staining. However, its ability to quantify renal fibrosis requires investigation. This study compared SHG imaging of renal fibrosis in mice with unilateral ureteric obstruction (UUO), to that of Masson’s trichrome staining (MTS) and immunohistochemistry (IHC) of collagen I. Additionally, the platform generated data on collagen morphology and distribution patterns. While all three methods determined that UUO‐injured mice underwent significantly increased renal fibrosis after 7 days, the HistoIndex platform additionally determined that UUO‐injured mice had a significantly increased collagen‐to‐tissue cross reticulation ratio (all P |
| doi_str_mv | 10.1096/fj.202002053RRR |
| format | Article |
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The Genesis200 imaging system and supplemental image analysis software, FibroIndex from HistoIndex, is a novel, automated platform that uses second‐harmonic generation (SHG) for imaging and characterization of interstitial collagen deposition and additional characteristics, in the absence of any staining. However, its ability to quantify renal fibrosis requires investigation. This study compared SHG imaging of renal fibrosis in mice with unilateral ureteric obstruction (UUO), to that of Masson’s trichrome staining (MTS) and immunohistochemistry (IHC) of collagen I. Additionally, the platform generated data on collagen morphology and distribution patterns. While all three methods determined that UUO‐injured mice underwent significantly increased renal fibrosis after 7 days, the HistoIndex platform additionally determined that UUO‐injured mice had a significantly increased collagen‐to‐tissue cross reticulation ratio (all P < .001 vs sham group). Furthermore, in UUO‐injured mice treated with the relaxin family peptide receptor‐1 agonists, relaxin (0.5 mg/kg/day) or B7‐33 (0.25 mg/kg/day), or angiotensin converting enzyme‐inhibitor, perindopril (1 mg/kg/day) over the 7‐day period, only the HistoIndex platform determined that the drug‐induced prevention of renal fibrosis correlated with significantly reduced collagen fiber thickness and collagen‐to‐tissue cross reticulation ratio, but increased collagen fiber counts. Relaxin or B7‐33 treatment also increased renal matrix metalloproteinase‐2 and reduced tissue inhibitor of metalloproteinase‐1 levels (all P < .01 vs UUO alone). 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The Genesis200 imaging system and supplemental image analysis software, FibroIndex from HistoIndex, is a novel, automated platform that uses second‐harmonic generation (SHG) for imaging and characterization of interstitial collagen deposition and additional characteristics, in the absence of any staining. However, its ability to quantify renal fibrosis requires investigation. This study compared SHG imaging of renal fibrosis in mice with unilateral ureteric obstruction (UUO), to that of Masson’s trichrome staining (MTS) and immunohistochemistry (IHC) of collagen I. Additionally, the platform generated data on collagen morphology and distribution patterns. While all three methods determined that UUO‐injured mice underwent significantly increased renal fibrosis after 7 days, the HistoIndex platform additionally determined that UUO‐injured mice had a significantly increased collagen‐to‐tissue cross reticulation ratio (all P < .001 vs sham group). Furthermore, in UUO‐injured mice treated with the relaxin family peptide receptor‐1 agonists, relaxin (0.5 mg/kg/day) or B7‐33 (0.25 mg/kg/day), or angiotensin converting enzyme‐inhibitor, perindopril (1 mg/kg/day) over the 7‐day period, only the HistoIndex platform determined that the drug‐induced prevention of renal fibrosis correlated with significantly reduced collagen fiber thickness and collagen‐to‐tissue cross reticulation ratio, but increased collagen fiber counts. Relaxin or B7‐33 treatment also increased renal matrix metalloproteinase‐2 and reduced tissue inhibitor of metalloproteinase‐1 levels (all P < .01 vs UUO alone). This study demonstrated the diagnostic value of the HistoIndex platform over currently used staining techniques.</description><subject>ACE inhibition</subject><subject>B7‐33</subject><subject>diagnostic platform</subject><subject>fibrosis</subject><subject>interstitial collagen</subject><subject>relaxin</subject><subject>second‐harmonic generation</subject><issn>0892-6638</issn><issn>1530-6860</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNqFkE9v1DAQxS1ERZfCmRvykUta_0mc-FgqCkiVkLblHE2c8eJVYi-eLKg3blz5jHwS3G5BvSF5ZM3M7z1pHmOvpDiVwpozvz1VQonyGr1er5-wlWy0qExnxFO2Ep1VlTG6O2bPibZCCCmkecaOtbaiM61ZsZ_nREg0Y1x48jxjhIn7MOREgTjEsdQSfv_4dT9bguOwKSzxPYW44cBj-oYTHwNsYqL7fdHQAiHeiTIiJ3QpjqX7AnlOsSDFATMsIUW-m2DxKc8v2JGHifDlw3_CPl--u7n4UF19ev_x4vyqcrqum8rAWI9-RAFeqM76crz3WtWDB6nRgHZGt1Y66_RgpXSDaqEWrRr02A11XesT9ubgu8vp6x5p6edADqcJIqY99aqRVkvR2ragZwfUlTAoo-93OcyQb3sp-rv0e7_tH6dfFK8fzPfDjOM__m_cBTAH4HuY8PZ_fv3l9VulZGMb_Qe6a5aa</recordid><startdate>202105</startdate><enddate>202105</enddate><creator>Bhuiyan, Sadman</creator><creator>Shen, Matthew</creator><creator>Chelvaretnam, Sharenya</creator><creator>Tan, Andre Y.</creator><creator>Ho, Gideon</creator><creator>Hossain, Mohammed Akhter</creator><creator>Widdop, Robert E.</creator><creator>Samuel, Chrishan S.</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0003-0295-4214</orcidid></search><sort><creationdate>202105</creationdate><title>Assessment of renal fibrosis and anti‐fibrotic agents using a novel diagnostic and stain‐free second‐harmonic generation platform</title><author>Bhuiyan, Sadman ; Shen, Matthew ; Chelvaretnam, Sharenya ; Tan, Andre Y. ; Ho, Gideon ; Hossain, Mohammed Akhter ; Widdop, Robert E. ; Samuel, Chrishan S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3445-6ad4dfde0af0289f202ff324bfa13e6a3c63791c9c3b911cb27a4072b3d8b4443</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>ACE inhibition</topic><topic>B7‐33</topic><topic>diagnostic platform</topic><topic>fibrosis</topic><topic>interstitial collagen</topic><topic>relaxin</topic><topic>second‐harmonic generation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bhuiyan, Sadman</creatorcontrib><creatorcontrib>Shen, Matthew</creatorcontrib><creatorcontrib>Chelvaretnam, Sharenya</creatorcontrib><creatorcontrib>Tan, Andre Y.</creatorcontrib><creatorcontrib>Ho, Gideon</creatorcontrib><creatorcontrib>Hossain, Mohammed Akhter</creatorcontrib><creatorcontrib>Widdop, Robert E.</creatorcontrib><creatorcontrib>Samuel, Chrishan S.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>The FASEB journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bhuiyan, Sadman</au><au>Shen, Matthew</au><au>Chelvaretnam, Sharenya</au><au>Tan, Andre Y.</au><au>Ho, Gideon</au><au>Hossain, Mohammed Akhter</au><au>Widdop, Robert E.</au><au>Samuel, Chrishan S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Assessment of renal fibrosis and anti‐fibrotic agents using a novel diagnostic and stain‐free second‐harmonic generation platform</atitle><jtitle>The FASEB journal</jtitle><addtitle>FASEB J</addtitle><date>2021-05</date><risdate>2021</risdate><volume>35</volume><issue>5</issue><spage>e21595</spage><epage>n/a</epage><pages>e21595-n/a</pages><issn>0892-6638</issn><eissn>1530-6860</eissn><abstract>Current histological measurement techniques for interstitial collagen, the basis of interstitial fibrosis, are semi‐quantitative at best and only provide a ratio of collagen levels within tissues. The Genesis200 imaging system and supplemental image analysis software, FibroIndex from HistoIndex, is a novel, automated platform that uses second‐harmonic generation (SHG) for imaging and characterization of interstitial collagen deposition and additional characteristics, in the absence of any staining. However, its ability to quantify renal fibrosis requires investigation. This study compared SHG imaging of renal fibrosis in mice with unilateral ureteric obstruction (UUO), to that of Masson’s trichrome staining (MTS) and immunohistochemistry (IHC) of collagen I. Additionally, the platform generated data on collagen morphology and distribution patterns. While all three methods determined that UUO‐injured mice underwent significantly increased renal fibrosis after 7 days, the HistoIndex platform additionally determined that UUO‐injured mice had a significantly increased collagen‐to‐tissue cross reticulation ratio (all P < .001 vs sham group). Furthermore, in UUO‐injured mice treated with the relaxin family peptide receptor‐1 agonists, relaxin (0.5 mg/kg/day) or B7‐33 (0.25 mg/kg/day), or angiotensin converting enzyme‐inhibitor, perindopril (1 mg/kg/day) over the 7‐day period, only the HistoIndex platform determined that the drug‐induced prevention of renal fibrosis correlated with significantly reduced collagen fiber thickness and collagen‐to‐tissue cross reticulation ratio, but increased collagen fiber counts. Relaxin or B7‐33 treatment also increased renal matrix metalloproteinase‐2 and reduced tissue inhibitor of metalloproteinase‐1 levels (all P < .01 vs UUO alone). This study demonstrated the diagnostic value of the HistoIndex platform over currently used staining techniques.</abstract><cop>United States</cop><pmid>33908676</pmid><doi>10.1096/fj.202002053RRR</doi><tpages>16</tpages><orcidid>https://orcid.org/0000-0003-0295-4214</orcidid></addata></record> |
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| subjects | ACE inhibition B7‐33 diagnostic platform fibrosis interstitial collagen relaxin second‐harmonic generation |
| title | Assessment of renal fibrosis and anti‐fibrotic agents using a novel diagnostic and stain‐free second‐harmonic generation platform |
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