Pleura and Peritoneum最新文献

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Characteristics of early pleural effusions after orthotopic heart transplantation: comparison with coronary artery bypass graft surgery. 原位心脏移植术后早期胸腔积液的特点:与冠状动脉搭桥手术的比较。
IF 1.8
Pleura and Peritoneum Pub Date : 2021-12-13 eCollection Date: 2021-12-01 DOI: 10.1515/pp-2021-0143
Anant Jain, Anusha Devarajan, Hussein Assallum, Ramin Malekan, Gregg M Lanier, Oleg Epelbaum
{"title":"Characteristics of early pleural effusions after orthotopic heart transplantation: comparison with coronary artery bypass graft surgery.","authors":"Anant Jain,&nbsp;Anusha Devarajan,&nbsp;Hussein Assallum,&nbsp;Ramin Malekan,&nbsp;Gregg M Lanier,&nbsp;Oleg Epelbaum","doi":"10.1515/pp-2021-0143","DOIUrl":"https://doi.org/10.1515/pp-2021-0143","url":null,"abstract":"<p><strong>Objectives: </strong>Pleural effusions appearing within the first 30 postoperative days following coronary artery bypass grafting (CABG) are classified as early and believed to be directly related to the surgery. The characteristics of such effusions are well-described. Orthotopic heart transplantation is also known to be complicated by pleural effusions; however, their characteristics have not been systematically reported. We assessed the features of early postoperative pleural effusions after heart transplantation and compared them to those of early effusions following CABG.</p><p><strong>Methods: </strong>We retrospectively collected demographic, clinical, and laboratory data for patients who underwent either orthotopic heart transplantation (study group) or CABG (comparison group) at our institution and whose postoperative course within 30 days was complicated by new or worsening pleural effusion that prompted drainage. Patients subjected to analysis consisted only of those with sufficiently complete laboratory profiles to permit adequate characterization of the nature of their pleural fluid.</p><p><strong>Results: </strong>Out of 251 orthotopic heart transplant recipients, seven (2.8%) were found to have sufficiently complete pleural fluid results to be included in the study group. Out of 1,506 patients who underwent CABG, 32 (2.1%) had sufficiently complete pleural fluid results and formed the comparison group. The radiological appearance of pleural effusions in both groups was similar: bilateral in at least half and exclusively moderate to large. Effusions complicating both surgeries were exudative in close to 90% of cases. For those with available leukocyte differential counts, the pleural fluid of the post-orthotopic heart transplantation group was more often neutrophilic (3/5, 60%), whereas the fluid of the post-coronary artery bypass grafting group was more often lymphocytic (22/32, 69%) and tended to be hemorrhagic (median RBC count 33,000 cells/µL vs. 10,000 cells/µL). None of the comparisons of pleural fluid characteristics between the two groups reached statistical significance.</p><p><strong>Conclusions: </strong>This small, descriptive study is the first to systematically report the fluid characteristics of pleural effusions complicating orthotopic heart transplantation within the first 30 postoperative days and to compare this group to those who developed effusions after CABG. Our findings revealed both similarities and differences in the pleural fluid characteristics between these two types of patients.</p>","PeriodicalId":20231,"journal":{"name":"Pleura and Peritoneum","volume":"6 4","pages":"161-165"},"PeriodicalIF":1.8,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8719445/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39962923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Frontmatter
IF 1.8
Pleura and Peritoneum Pub Date : 2021-12-01 DOI: 10.1515/pp-2021-frontmatter4
{"title":"Frontmatter","authors":"","doi":"10.1515/pp-2021-frontmatter4","DOIUrl":"https://doi.org/10.1515/pp-2021-frontmatter4","url":null,"abstract":"","PeriodicalId":20231,"journal":{"name":"Pleura and Peritoneum","volume":"282 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76822113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Risk factors and clinical outcomes in patients undergoing cytoreductive surgery with concomitant ureteric reimplantation. 输尿管再植术患者行细胞减少术的危险因素和临床结果。
IF 1.8
Pleura and Peritoneum Pub Date : 2021-11-15 eCollection Date: 2021-12-01 DOI: 10.1515/pp-2021-0130
Anais Alonso, Shoma Barat, Helen Kennedy, Meredith Potter, Nayef Alzahrani, David Morris
{"title":"Risk factors and clinical outcomes in patients undergoing cytoreductive surgery with concomitant ureteric reimplantation.","authors":"Anais Alonso,&nbsp;Shoma Barat,&nbsp;Helen Kennedy,&nbsp;Meredith Potter,&nbsp;Nayef Alzahrani,&nbsp;David Morris","doi":"10.1515/pp-2021-0130","DOIUrl":"https://doi.org/10.1515/pp-2021-0130","url":null,"abstract":"<p><strong>Objectives: </strong>There are currently scarce data exploring ureteric reimplantation (UR) during cytoreductive surgery (CRS).</p><p><strong>Methods: </strong>We identified patients undergoing CRS for peritoneal surface malignancies (PSM) of any origin at a single high-volume unit. UR was defined as ureteroureterostomy, transureterouretostomy, ureteroneocystostomy, ureterosigmoidostomy or ileal conduit performed during CRS. Peri-operative outcomes, long-term survival and risk factors for requiring UR were analysed.</p><p><strong>Results: </strong>Seven hundred and sixty-seven CRSs were identified. Twenty-three (3.0%) procedures involved UR. Bladder resection and colorectal cancer (CRC) were associated with increased risk of UR (bladder resection: OR 12.90, 95% CI 4.91-33.90, p<0.001; CRC: OR 2.51, 95% CI 1.05-6.01, p=0.038). UR did not increase the risk of Grade III-IV morbidity or mortality. The rate of ureteric leak was 3/23 (13.0%) in the UR group. Mean survival was equivocal in patients with CRC (58.14 vs. 34.25 months, p=0.441) but significantly lower in those with high-grade appendiceal mucinous neoplasm (HAMN) undergoing UR (73.98 vs. 30.90 months, p=0.029).</p><p><strong>Conclusions: </strong>UR during CRS does not increase major morbidity or mortality for carefully selected patients, and is associated with low rates of urologic complications. Whilst decreased survival was apparent in patients with HAMN undergoing UR, it is unclear whether this relationship is causal.</p>","PeriodicalId":20231,"journal":{"name":"Pleura and Peritoneum","volume":"6 4","pages":"155-160"},"PeriodicalIF":1.8,"publicationDate":"2021-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8719446/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39962922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Consensus statement on safety measures for pressurized intraperitoneal aerosol chemotherapy. 关于加压腹腔喷雾化疗安全措施的共识声明。
IF 1.8
Pleura and Peritoneum Pub Date : 2021-11-02 eCollection Date: 2021-12-01 DOI: 10.1515/pp-2021-0125
Arnaud Girardot-Miglierina, Daniel Clerc, Mohammad Alyami, Laurent Villeneuve, Olivia Sgarbura, Marc-André Reymond, Martin Hübner
{"title":"Consensus statement on safety measures for pressurized intraperitoneal aerosol chemotherapy.","authors":"Arnaud Girardot-Miglierina,&nbsp;Daniel Clerc,&nbsp;Mohammad Alyami,&nbsp;Laurent Villeneuve,&nbsp;Olivia Sgarbura,&nbsp;Marc-André Reymond,&nbsp;Martin Hübner","doi":"10.1515/pp-2021-0125","DOIUrl":"https://doi.org/10.1515/pp-2021-0125","url":null,"abstract":"<p><strong>Objectives: </strong>Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a promising treatment for peritoneal cancer that entails, however, potential risks for the caregivers in the operating room (OR). This study aimed to reach a consensus within the PIPAC community on a comprehensive safety protocol.</p><p><strong>Methods: </strong>Active PIPAC centers were invited to participate in a two-round Delphi process on 43 predefined items: concise summaries of the existing evidence were presented together with questions formulated using the population, intervention, comparator, and outcome framework. According to the Grading of Recommendations Assessment, Development, and Evaluation, the strength of recommendation was voted by panelists, accepting a consensus threshold of ≥50% of the agreement for any of the four grading options, or ≥70% in either direction.</p><p><strong>Results: </strong>Forty-seven out of 66 invited panelists answered both rounds (response rate 76%). The consensus was reached for 41 out of 43 items (95.3%). Strong and weak recommendations were issued for 30 and 10 items, respectively. A positive consensual recommendation was issued to activate laminar airflow without specific strength, neither strong nor weak. No consensus was reached for systematic glove change for caregivers with a high risk of exposure and filtering facepiece mask class 3 for caregivers with low risk of exposure.</p><p><strong>Conclusions: </strong>A high degree of consensus was reached for a comprehensive safety protocol for PIPAC, adapted to the risk of exposure for the different caregivers in the OR. This consensus can serve as a basis for education and help reach a high degree of adherence in daily practice.</p>","PeriodicalId":20231,"journal":{"name":"Pleura and Peritoneum","volume":"6 4","pages":"139-149"},"PeriodicalIF":1.8,"publicationDate":"2021-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8719448/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39962920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Acute respiratory distress syndrome (ARDS) after pressurized intraperitoneal aerosol chemotherapy with oxaliplatin: a case report. 奥沙利铂雾化加压腹腔化疗后急性呼吸窘迫综合征1例。
IF 1.8
Pleura and Peritoneum Pub Date : 2021-10-05 eCollection Date: 2021-12-01 DOI: 10.1515/pp-2021-0126
Emilie Thibaudeau, Corinne Brianchon, Jean-Luc Raoul, Frédéric Dumont
{"title":"Acute respiratory distress syndrome (ARDS) after pressurized intraperitoneal aerosol chemotherapy with oxaliplatin: a case report.","authors":"Emilie Thibaudeau,&nbsp;Corinne Brianchon,&nbsp;Jean-Luc Raoul,&nbsp;Frédéric Dumont","doi":"10.1515/pp-2021-0126","DOIUrl":"https://doi.org/10.1515/pp-2021-0126","url":null,"abstract":"<p><p>Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a new drug delivery method for intraabdominal cavity chemotherapy. It combines the benefits of a minimally invasive approach (low morbidity and easy to repeat) with the pharmacokinetic advantages of intraperitoneal administration and tolerance seems excellent. We would like to report one case of a serious adverse event, acute respiratory distress syndrome, which is likely related to oxaliplatin administration; all signs disappeared within a few days.</p>","PeriodicalId":20231,"journal":{"name":"Pleura and Peritoneum","volume":"6 4","pages":"167-170"},"PeriodicalIF":1.8,"publicationDate":"2021-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8719447/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39962924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
ISSPP 2021 2nd Congress of the International Society for the Study of Pleura and Peritoneum. ISSPP 2021第二届国际胸膜和腹膜研究学会大会。
IF 1.8
Pleura and Peritoneum Pub Date : 2021-09-27 eCollection Date: 2021-09-01 DOI: 10.1515/pp-2021-0141
Janika Kugel
{"title":"ISSPP 2021 2nd Congress of the International Society for the Study of Pleura and Peritoneum.","authors":"Janika Kugel","doi":"10.1515/pp-2021-0141","DOIUrl":"https://doi.org/10.1515/pp-2021-0141","url":null,"abstract":"","PeriodicalId":20231,"journal":{"name":"Pleura and Peritoneum","volume":"6 3","pages":"eA1-eA78"},"PeriodicalIF":1.8,"publicationDate":"2021-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8482449/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39564811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Can pressurised intraperitoneal aerosol chemotherapy with oxaliplatin (PIPAC-O+) be added to standard treatment for resectable high-risk gastric cancer patients? A study protocol. 奥沙利铂加压腹腔雾化化疗(PIPAC-O+)能否加入可切除高危胃癌患者的标准治疗?研究方案。
IF 1.8
Pleura and Peritoneum Pub Date : 2021-09-17 eCollection Date: 2021-12-01 DOI: 10.1515/pp-2021-0132
Jessica L Reid, Harsh A Kanhere, Peter J Hewett, Timothy J Price, Guy J Maddern, Markus I Trochsler
{"title":"Can pressurised intraperitoneal aerosol chemotherapy with oxaliplatin (PIPAC-O+) be added to standard treatment for resectable high-risk gastric cancer patients? A study protocol.","authors":"Jessica L Reid,&nbsp;Harsh A Kanhere,&nbsp;Peter J Hewett,&nbsp;Timothy J Price,&nbsp;Guy J Maddern,&nbsp;Markus I Trochsler","doi":"10.1515/pp-2021-0132","DOIUrl":"https://doi.org/10.1515/pp-2021-0132","url":null,"abstract":"<p><strong>Objectives: </strong>Gastric cancer remains one of the most fatal cancers, despite an intensive treatment regime of chemotherapy-surgery-chemotherapy. Peritoneal metastatic disease is commonly diagnosed post treatment regime and once established, patients are likely to die in 3-9 months. Systemic chemotherapy does not increase survival for these patients due to the poor vascularisation of this area. We are proposing the addition of pressurised intraperitoneal aerosol chemotherapy (PIPAC) to the treatment regime for curative patients as a preventive measure to reduce the risk of peritoneal metastases occurring.</p><p><strong>Methods: </strong>This is a prospective, single centre, non-randomised, open-label pilot trial evaluating the addition of PIPAC to the standard multimodal treatment pathway. Patients will undergo standard neoadjuvant chemotherapy with four cycles of fluorouracil, leucovorin, oxaliplatin and docetaxel (FLOT), then PIPAC, followed by gastrectomy. Four cycles of FLOT will be administered post-surgery. Primary outcome is safety and feasibility, assessed by perioperative morbidity and possible interruptions of the standard multimodal treatment pathway.</p>","PeriodicalId":20231,"journal":{"name":"Pleura and Peritoneum","volume":"6 4","pages":"151-154"},"PeriodicalIF":1.8,"publicationDate":"2021-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8722176/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39962921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Diaphragmatic peritoneal metastases mimicking liver metastases. 膈膜转移,类似肝转移。
IF 1.8
Pleura and Peritoneum Pub Date : 2021-08-20 eCollection Date: 2021-09-01 DOI: 10.1515/pp-2021-0120
Barbara Noiret, Clarisse Eveno
{"title":"Diaphragmatic peritoneal metastases mimicking liver metastases.","authors":"Barbara Noiret,&nbsp;Clarisse Eveno","doi":"10.1515/pp-2021-0120","DOIUrl":"https://doi.org/10.1515/pp-2021-0120","url":null,"abstract":"","PeriodicalId":20231,"journal":{"name":"Pleura and Peritoneum","volume":"6 3","pages":"137-138"},"PeriodicalIF":1.8,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8482447/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39564810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Influence of pre-analytical sample preparation on drug concentration measurements in peritoneal tissue: an ex-vivo study. 分析前样品制备对腹膜组织药物浓度测量的影响:一项离体研究。
IF 1.8
Pleura and Peritoneum Pub Date : 2021-07-28 eCollection Date: 2021-09-01 DOI: 10.1515/pp-2020-0151
Arianna Castagna, Iaroslav Sautkin, Frank-Jürgen Weinreich, Hannah Heejung Lee, Alfred Königsrainer, Marc André Reymond, Giorgi Nadiradze
{"title":"Influence of pre-analytical sample preparation on drug concentration measurements in peritoneal tissue: an <i>ex-vivo</i> study.","authors":"Arianna Castagna,&nbsp;Iaroslav Sautkin,&nbsp;Frank-Jürgen Weinreich,&nbsp;Hannah Heejung Lee,&nbsp;Alfred Königsrainer,&nbsp;Marc André Reymond,&nbsp;Giorgi Nadiradze","doi":"10.1515/pp-2020-0151","DOIUrl":"https://doi.org/10.1515/pp-2020-0151","url":null,"abstract":"<p><strong>Objectives: </strong>Biopsy morphology (surface/depth ratio) and sample processing might affect pharmacological measurements in peritoneal tissue.</p><p><strong>Methods: </strong>This is an <i>ex-vivo</i> study on inverted bovine urinary bladders (IBUB). We compared cisplatin (CIS) and doxorubicin (DOX) concentration in 81 standardized transmural punch biopsies of different diameters (6 and 12 mm). Then, we assessed the effect of dabbing the peritoneal surface before analysis. After automatized tissue homogenization with ceramic beads followed by lyophilisation, DOX concentration was quantified by high-performance liquid chromatography (HPLC), CIS concentration by atomic absorption spectroscopy. Experiments were performed in triplicate; the analysis was blinded to the sample origin. Comparisons were performed using non-parametric tests.</p><p><strong>Results: </strong>Concentrations are given in mean (CI 5-95%). Results were reproducible between experiments (for CIS p=0.783, for DOX p=0.235) and between different localizations within the IBUB (for CIS p=0.032, for DOX p=0.663). Biopsy diameter had an influence on CIS tissue concentration (6 mm biopsies: 23.2 (20.3-26.1), vs. 12 mm biopsies: 8.1 (7.2-9.2) ng/mg, p<0.001) but not on DOX: (0.46, 0.29-0.62) vs. 0.43 (0.33-0.54) ng/mg respectively, p=0.248). Dabbing the peritoneal surface reduced DOX tissue concentration (dry biopsies: 0.28 (0.12-0.43) vs. wet biopsies: 0.64 (0.35-0.93) ng/mg, p=0.025) but not CIS (23.5 (19.0-28.0) vs. 22.9 (18.9-26.9) ng/mg, respectively, p=0.735).</p><p><strong>Conclusions: </strong>Measurements of drug concentration in peritoneal tissue can be influenced by the biopsy's surface/depth ratio and after drying the biopsy's surface<b>.</b> This influence can reach a factor three, depending on the drug tested<b>.</b> The biopsy technique and the pre-analytical sample preparation should be standardized to ensure reliable pharmacological measurements in peritoneal tissue.</p>","PeriodicalId":20231,"journal":{"name":"Pleura and Peritoneum","volume":"6 3","pages":"131-136"},"PeriodicalIF":1.8,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/pp-2020-0151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39564809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A human ex vivo coculture model to investigate peritoneal metastasis and innovative treatment options. 人类离体共培养模型研究腹膜转移和创新治疗方案。
IF 1.8
Pleura and Peritoneum Pub Date : 2021-07-27 eCollection Date: 2021-09-01 DOI: 10.1515/pp-2021-0128
Dina Mönch, Jana Koch, Annika Maaß, Nicole Janssen, Thomas Mürdter, Philipp Renner, Petra Fallier-Becker, Wiebke Solaß, Matthias Schwab, Marc-H Dahlke, Hans J Schlitt, Tobias Leibold
{"title":"A human <i>ex vivo</i> coculture model to investigate peritoneal metastasis and innovative treatment options.","authors":"Dina Mönch,&nbsp;Jana Koch,&nbsp;Annika Maaß,&nbsp;Nicole Janssen,&nbsp;Thomas Mürdter,&nbsp;Philipp Renner,&nbsp;Petra Fallier-Becker,&nbsp;Wiebke Solaß,&nbsp;Matthias Schwab,&nbsp;Marc-H Dahlke,&nbsp;Hans J Schlitt,&nbsp;Tobias Leibold","doi":"10.1515/pp-2021-0128","DOIUrl":"https://doi.org/10.1515/pp-2021-0128","url":null,"abstract":"<p><strong>Objectives: </strong>Peritoneal metastasis (PM) is commonly observed in patients with colorectal cancer (CRC). The outcome of these patients is poor, with an average survival of only six months without therapy, which requires a better understanding of PM biology and new treatment strategies.</p><p><strong>Methods: </strong>We established and characterized a human <i>ex vivo</i> peritoneal model to investigate the mechanisms of peritoneal seeding and possible treatment options. For this, CRC cell lines and patient-derived tumor organoids were cultured together with human peritoneum to investigate the invasion of malignant cells and the effects of local chemotherapy.</p><p><strong>Results: </strong>Fresh human peritoneum was cultured for up to three weeks in a stainless steel ring system, allowing for survival of all peritoneal structures. Peritoneal cell survival was documented by light microscopy and immunohistochemical staining. Further, immunohistological characterization of the tissue revealed CD3-positive T-lymphocytes and vimentin-positive fibroblasts within the peritoneum. In addition, extracellular matrix components (collagens, matrix metalloproteinases) were localized within the tissue. Coculture with CRC cell lines and patient-derived CRC organoids revealed that cancer cells grew on the peritoneum and migrated into the tissue. Coculture with CRC cells confirmed that hyperthermal treatment at 41 °C for 90 min significantly enhanced the intracellular entry of doxorubicin. Moreover, treatment with mitomycin C under hyperthermic conditions significantly reduced the amount of cancer cells within the peritoneum.</p><p><strong>Conclusions: </strong>This human <i>ex vivo</i> peritoneal model provides a stringent and clinically relevant platform for the investigation of PM and for further elucidation of possible treatment options.</p>","PeriodicalId":20231,"journal":{"name":"Pleura and Peritoneum","volume":"6 3","pages":"121-129"},"PeriodicalIF":1.8,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1515/pp-2021-0128","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39564808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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