{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T22:41:19Z","timestamp":1781649679002,"version":"3.54.5"},"reference-count":25,"publisher":"S. Karger AG","issue":"1-2","license":[{"start":{"date-parts":[[2014,11,6]],"date-time":"2014-11-06T00:00:00Z","timestamp":1415232000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"},{"start":{"date-parts":[[2014,11,6]],"date-time":"2014-11-06T00:00:00Z","timestamp":1415232000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.karger.com\/Services\/SiteLicenses"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nephron Clin Pract"],"abstract":"<jats:p>&lt;b&gt;&lt;i&gt;Introduction:&lt;\/i&gt;&lt;\/b&gt; Simple peritoneal fibrosis and encapsulating peritoneal sclerosis (EPS) are important lesions in the peritoneum of patients on peritoneal dialysis (PD). We have previously described a population of podoplanin-positive myofibroblasts in peritoneal biopsies from patients with EPS. Platelet-derived growth factor receptor-\u03b2 (PDGFR\u03b2) is a marker of pericytes, and PDGFs might be involved in the fibrotic response of the peritoneum. This study aimed to describe PDGFR\u03b2 in the human peritoneum. &lt;b&gt;&lt;i&gt;Methods:&lt;\/i&gt;&lt;\/b&gt; In this retrospective analysis, we localized PDGFR\u03b2 in peritoneal biopsies from patients with EPS (n = 6) and patients on PD without signs of EPS (n = 5), and compared them with normal peritoneum (n = 4) and peritoneum from uremic patients (n = 5). Consecutive sections were stained for smooth-muscle actin (SMA) and podoplanin. Slides were scored semiquantitatively by 2 observers blinded to the diagnosis. &lt;b&gt;&lt;i&gt;Results:&lt;\/i&gt;&lt;\/b&gt; PDGFR\u03b2 was expressed by cells of arterial walls in all biopsies. A prominent population of PDGFR\u03b2-positive cells was present in the normal peritoneum, which were SMA negative on consecutive sections. In patients on PD, a high number of PDGFR\u03b2 were also positive for SMA. In EPS, the majority of podoplanin-positive cells were positive for PDGFR\u03b2. In peritoneal biopsies from normal and uremic patients, the expression of SMA was mainly restricted to cells of arterial walls. Podoplanin expression was restricted to lymphatic vessels in normal peritoneum, in uremic patients, and in patients on PD without EPS. &lt;b&gt;&lt;i&gt;Conclusions:&lt;\/i&gt;&lt;\/b&gt; As podoplanin-positive myofibroblasts express PDGFR\u03b2, these cells might be related to pericytes (rather than other sources of fibroblasts). PDGFR\u03b2 might turn out to be a therapeutic target in EPS.<\/jats:p>","DOI":"10.1159\/000368241","type":"journal-article","created":{"date-parts":[[2014,12,12]],"date-time":"2014-12-12T07:34:32Z","timestamp":1418369672000},"page":"178-184","source":"Crossref","is-referenced-by-count":7,"title":["Platelet-Derived Growth Factor Receptor-\u03b2 Expression in Human Peritoneum"],"prefix":"10.1159","volume":"128","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1552-7983","authenticated-orcid":false,"given":"Harald","family":"Seeger","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Niko","family":"Braun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joerg","family":"Latus","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9658-1211","authenticated-orcid":false,"given":"M. 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