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peritoneals adhesion

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https://www.readbyqxmd.com/read/28323210/the-protective-activity-of-mesothelial-cells-against-peritoneal-growth-of-gastrointestinal-tumors-the-role-of-soluble-icam-1
#1
Justyna Mikuła-Pietrasik, Paweł Uruski, Małgorzata Kucińska, Andrzej Tykarski, Krzysztof Książek
In this project we examined how the presence of human peritoneal mesothelial cells (HPMCs) modifies (supports or inhibits) colorectal and pancreatic cancer cell progression in mice peritoneal cavity. Experiments were performed using primary, omentum-derived HPMCs, commercially available colorectal (SW-480) and pancreatic (PSN-1) cancer cells, and immunocompromised SCID mice. Tumor growth within the peritoneal cavity was monitored using bioluminescence. Adhesion of the cancer cells to HPMCs was examined using a fluorescence-based method, while the incidence of apoptosis was quantified using flow cytometry...
March 17, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28322132/therapeutically-targeting-the-inflammasome-product-in-a-chimeric-model-of-endometriosis-related-surgical-adhesions
#2
Meredith M Stocks, Marta A Crispens, Tianbing Ding, Shilpa Mokshagundam, Kaylon L Bruner-Tran, Kevin G Osteen
Development of adhesions commonly occurs in association with surgery for endometriosis. Even in the absence of surgery, women with endometriosis appear to be at an enhanced risk of developing adhesions. In the current study, we utilized a chimeric mouse model of experimental endometriosis in order to examine the role of inflammasome activation in the development of postsurgical adhesions. Mice were randomized to receive peritoneal injections of human endometrial tissue fragments or endometrial tissue conditioned media (CM) from women with or without endometriosis 16 hours after ovariectomy and placement of an estradiol-releasing silastic capsule...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28317806/mycobacterium-lepraemurium-uses-tlr-6-and-mr-but-not-lipid-rafts-or-dc-sign-to-gain-access-into-mouse-macrophages
#3
Mayra Silva-Miranda, Patricia Arce-Paredes, Oscar Rojas-Espinosa
OBJECTIVE/BACKGROUND: Mycobacterium lepraemurium (MLM), the etiologic agent of murine leprosy, is an intracellular parasite of macrophages; the mechanism used by this bacterium to enter macrophages is not known. The fate of the MLM phagosome inside macrophages is also unknown. This study was conducted to investigate how MLM enters macrophages and to define the maturation process of MLM phagosome inside macrophages. MATERIALS AND METHODS: Peritoneal macrophages were incubated in the presence of mannan-bovine serum albumin (BSA), and antibodies to known macrophage receptors, including, anti-FcγRIII/RII (anti-CD16/32), anti-CD35 (anti-CR1), anti-TLR2, anti-TLR4, anti-TLR6, anti-CD14, and anti-dendritic cell-specific intercellular adhesion molecule-3-grabbing nonintegrin (DC-SIGN)...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28270519/plasminogen-activator-inhibitor-1-regulates-macrophage-dependent-postoperative-adhesion-by-enhancing-egf-her1-signaling-in-mice
#4
Kumpei Honjo, Shinya Munakata, Yoshihiko Tashiro, Yousef Salama, Hiroshi Shimazu, Salita Eiamboonsert, Douaa Dhahri, Atsuhiko Ichimura, Takashi Dan, Toshio Miyata, Kazuyoshi Takeda, Kazuhiro Sakamoto, Koichi Hattori, Beate Heissig
Adhesive small bowel obstruction remains a common problem for surgeons. After surgery, platelet aggregation contributes to coagulation cascade and fibrin clot formation. With clotting, fibrin degradation is simultaneously enhanced, driven by tissue plasminogen activator-mediated cleavage of plasminogen to form plasmin. The aim of this study was to investigate the cellular events and proteolytic responses that surround plasminogen activator inhibitor (PAI-1; Serpine1) inhibition of postoperative adhesion. Peritoneal adhesion was induced by gauze deposition in the abdominal cavity in C57BL/6 mice and those that were deficient in fibrinolytic factors, such as Plat(-/-) and Serpine1(-/-) In addition, C57BL/6 mice were treated with the novel PAI-1 inhibitor, TM5275...
March 7, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28264481/anti-endometriotic%C3%A2-effects%C3%A2-of%C3%A2-pueraria%C3%A2-flower%C3%A2-extract%C3%A2-in%C3%A2-human%C3%A2-endometriotic%C3%A2-cells%C3%A2-and%C3%A2-mice
#5
Ji-Hyun Kim, Jeong-Hwa Woo, Hye Mi Kim, Myung Sook Oh, Dae Sik Jang, Jung-Hye Choi
Pueraria flowers have been used as a vegetable and an ingredient for tea and jelly. In this study, we investigated the effects of Pueraria flower extract (PFE) on endometriosis, a common gynaecological disease characterised by local sterile inflammation of peritoneal cavity. PFE suppressed the adhesion of human endometriotic cells 11Z and 12Z to human mesothelial Met5A cells. In addition, PFE significantly inhibited the migration of 11Z and 12Z cells as shown by woundhealing and transwell migration assays. PFE reduced the protein and mRNA levels of matrix metalloproteinase (MMP)-2 and MMP-9 in endometriotic cells...
February 28, 2017: Nutrients
https://www.readbyqxmd.com/read/28263453/tissue-response-to-five-commercially-available-peritoneal-adhesion-barriers-a-systematic-histological-evaluation
#6
Volker H Schmitt, Andreas Mamilos, Christine Schmitt, Constanze N E Neitzer-Planck, Taufiek K Rajab, David Hollemann, Willi Wagner, Bernhard Krämer, Helmut Hierlemann, C James Kirkpatrick, Christoph Brochhausen
Separating wounded serosa by physical barriers is the only clinically approved adjunct for postoperative adhesion prevention. Since the optimal adhesion barrier has not been found, it is essential to improve our pathogenic understanding of adhesion formation and to compare the effects of different barrier materials on tissue and cells. Wistar rats underwent standardized peritoneal damage and were treated either with Seprafilm, Adept, Intercoat, Spraygel, SupraSeal or remained untreated as a control. 14 days postoperatively, the lesions were explanted and histomorphologically analyzed using the European ISO score to evaluate material implants...
March 6, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28263384/mesothelium-expression-of-vascular-cell-adhesion-molecule-1-vcam-1-is-associated-with-an-unfavorable-prognosis-in-epithelial-ovarian-cancer-eoc
#7
Jennifer M Scalici, Sanja Arapovic, Erin J Saks, Kristen A Atkins, Gina Petroni, Linda R Duska, Jill K Slack-Davis
BACKGROUND: Mesothelium vascular cell adhesion molecule-1 (VCAM-1) expression in the metastatic epithelial ovarian cancer (EOC) microenvironment is induced by tumor and mediates tumor cell invasion. VCAM-1 imaging suggests expression during treatment is an indicator of platinum resistance. Here, we assess the potential prognostic significance of mesothelium VCAM-1 expression and prospectively evaluate whether soluble VCAM-1 (sVCAM-1) is a surrogate for mesothelium expression. METHODS: A retrospective review of EOC patients was performed to evaluate outcomes with mesothelium VCAM-1 expression determined by immunohistochemistry of peritoneum or omentum specimens...
May 15, 2017: Cancer
https://www.readbyqxmd.com/read/28253866/expression-of-sox2-nanog-and-oct4-in-a-mouse-model-of-lipopolysaccharide-induced-acute-uterine-injury-and-intrauterine-adhesions
#8
Li Xiao, Yong Song, Wei Huang, Shiyuan Yang, Jing Fu, Xue Feng, Min Zhou
BACKGROUND: Activation of inflammation-mediated endometrial injury is suggested to play a decisive role in pathogenesis of intrauterine adhesion (IUA). The stem cell theory of endometrial diseases has been given a hotspot, in that human endometrial stem cells have been isolated from the endometrium. Three transcription factors that play key roles in maintaining pluripotency and self-renewal in stem cells are sex-determining region Y-box2 (SOX2), Nanog homebox (NANOG), and octamer-binding protein (OCT4), which may be responsible for the damage or repair process of uterine endometrium...
March 3, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28242472/comparison-between-resection-bipolar-coagulation-and-plasmajet%C3%A2-a-preliminary-animal-study
#9
Nicolas Bourdel, Pauline Chauvet, Horace Roman, Bruno Pereira, Oana Somcutian, Pierre J Dechelotte, Michel Canis
OBJECTIVE(S): To compare the most used types of surgical techniques, for peritoneal lesions management, to Plasmajet® (PJ), in term of healing and post-operative adhesion. STUDY DESIGN: Prospective, experimental animal study. Female pigs (Landrace/Large White-Pietran) weighing 20-25kgs were used for the experiments. Eleven areas of 2cm(2) were treated on each lateral side of the peritoneal wall. Two areas of control, 2 of surgical resection with scissors, 2 of bipolar coagulation, 2 of Plasmajet® 10 low (PJ10L, adjustment of the Plasmajet®) used in contact with the peritoneum, 2 of PJ10L used at 3-5mm from the peritoneum, 2 of PJ10L used at 10mm, 2 of PJ used at 10 High (PJ10H) close to the peritoneum, 2 of PJ10H used at 3-5mm, 2 of PJ10H used at 10mm, 2 of PJ used at 40 Low (PJ40L) used at 3-5mm, 2 of PJ40L used at 10mm from the peritoneum...
February 11, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28238683/endothelial-notch1-activity-facilitates-metastasis
#10
Elfriede Wieland, Juan Rodriguez-Vita, Sven S Liebler, Carolin Mogler, Iris Moll, Stefanie E Herberich, Elisa Espinet, Esther Herpel, Amitai Menuchin, Jenny Chang-Claude, Michael Hoffmeister, Christoffer Gebhardt, Hermann Brenner, Andreas Trumpp, Christian W Siebel, Markus Hecker, Jochen Utikal, David Sprinzak, Andreas Fischer
Endothelial cells (ECs) provide angiocrine factors orchestrating tumor progression. Here, we show that activated Notch1 receptors (N1ICD) are frequently observed in ECs of human carcinomas and melanoma, and in ECs of the pre-metastatic niche in mice. EC N1ICD expression in melanoma correlated with shorter progression-free survival. Sustained N1ICD activity induced EC senescence, expression of chemokines and the adhesion molecule VCAM1. This promoted neutrophil infiltration, tumor cell (TC) adhesion to the endothelium, intravasation, lung colonization, and postsurgical metastasis...
February 12, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28225914/the-effectiveness-of-heparin-platelet-rich-plasma-prp-and-silver-nanoparticles-on-prevention-of-postoperative-peritoneal-adhesion-formation-in-rats
#11
Hamid Reza Makarchian, Amir Kasraianfard, Pezhman Ghaderzadeh, Seyed Mohammad Reza Javadi, Manoochehr Ghorbanpoor
Purpose: To assess the effectiveness of heparin, platelet-rich plasma (PRP), and silver nanoparticles on prevention of postoperative adhesion in animal models. Methods: Sixty males Albino Wistar rats aged 5 to 6 weeks were classified into five groups receiving none, heparin, PRP, silver nanoparticles, PRP plus silver nanoparticles intraperitoneally. After 2 weeks, the animals underwent laparotomy and the damaged site was assessed for peritoneal adhesions severity...
January 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28224367/novel-treatment-with-intraperitoneal-moc31pe-immunotoxin-in-colorectal-peritoneal-metastasis-results-from-the-immunopeca-phase-1-trial
#12
Ida S Frøysnes, Yvonne Andersson, Stein G Larsen, Ben Davidson, Janne-Merete Torset Øien, Kari Hauge Olsen, Karl-Erik Giercksky, Lars Julsrud, Øystein Fodstad, Svein Dueland, Kjersti Flatmark
BACKGROUND: MOC31PE immunotoxin was developed to rapidly kill cells expressing the tumor-associated epithelial cell adhesion molecule, which is highly expressed in colorectal cancer. Although cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) may offer long-term survival to patients with peritoneal metastasis from colorectal cancer (PM-CRC), most patients experience disease relapse and novel therapeutic options are needed. On this basis, MOC31PE is being developed as a novel therapeutic principle to target PM-CRC...
February 21, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28213931/successful-resumption-of-peritoneal-dialysis-following-living-donor-liver-transplantation-in-children-with-end-stage-renal-disease
#13
Hiroyuki Kanazawa, Akinari Fukuda, Mai Sato, Shingo Ishimori, Kengo Sasaki, Hajime Uchida, Takanobu Shigeta, Vidyadhar Padmakar Mali, Seisuke Sakamoto, Kenji Ishikura, Mureo Kasahara
Children with ESRD in need of RRT are commonly managed by PD due to difficulty with vascular access for HD and the relatively large extracorporeal blood volume required. Major abdominal surgery may result in injury to the peritoneum and consequent adhesion, thereby resulting in a reduction in the anatomical capacity and transport capability across the peritoneal membrane. Here, we report successful resumption of PD after LDLT in two pediatric patients. The causes of ESRD were PH1 and juvenile nephronophthisis, respectively...
February 18, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28212637/a-pectin-honey-hydrogel-prevents-postoperative-intraperitoneal-adhesions-in-a-rat-model
#14
Gessica Giusto, Cristina Vercelli, Selina Iussich, Andrea Audisio, Emanuela Morello, Rosangela Odore, Marco Gandini
BACKGROUND: Adhesions are a common postoperative surgical complication. Liquid honey has been used intraperitoneally to reduce the incidence of these adhesions. However, solid barriers are considered more effective than liquids in decreasing postoperative intra-abdominal adhesion formation; therefore, a new pectin-honey hydrogel (PHH) was produced and its effectiveness was evaluated in a rat cecal abrasion model. Standardized cecal/peritoneal abrasion was performed through laparotomy in 48 adult Sprague-Dawley rats to induce peritoneal adhesion formation...
February 17, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28207849/inhibition-of-peritoneal-dissemination-of-colon-cancer-by-hyperthermic-co2-insufflation-a-novel-approach-to-prevent-intraperitoneal-tumor-spread
#15
Yuanfei Peng, Hua Yang, Qing Ye, Houming Zhou, Minhua Zheng, Yinghong Shi
BACKGROUND: The increasing use of laparoscopic surgery for advanced gastrointestinal cancer raises concerns about intra-peritoneal tumor spread. Prevention of peritoneal dissemination is extremely important but a preventive modality is lacking. The aim of this study was to examine a novel approach (hyperthermic CO2 insufflation, HT-CO2) for preventing peritoneal dissemination during laparoscopic surgery. METHODS: A peritoneal dissemination model was established in Balb/c nu/nu mice by intraperitoneal injection of human colon cancer cells (SW1116, 1×106)...
2017: PloS One
https://www.readbyqxmd.com/read/28201944/the-association-between-soluble-intercellular-adhesion-molecule-1-levels-in-drained-dialysate-and-peritoneal-injury-in-peritoneal-dialysis
#16
Yusuke Igarashi, Yoshiyuki Morishita, Hiromichi Yoshizawa, Reika Imai, Toshimi Imai, Ichiro Hirahara, Tetsu Akimoto, Susumu Ookawara, Kenichi Ishibashi, Shigeaki Muto, Daisuke Nagata
BACKGROUND: Chronic inflammation of the peritoneum causes peritoneal injury in patients on peritoneal dialysis. Intercellular adhesion molecule-1 and its circulating form, soluble intercellular adhesion molecule-1, play pivotal roles in inflammation. However, their role in peritoneal injury is unclear. METHODS: We measured changes in intercellular adhesion molecule-1 expression in the peritoneum of a peritoneal injury model in rats. The associations between soluble intercellular adhesion molecule-1 levels in drained dialysate and the solute transport rate (D/P-Cr and D/D0-glucose) determined by the peritoneal equilibration test, and matrix metalloproteinase-2 levels in drained dialysate were investigated in 94 peritoneal drained dialysate samples...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28196659/sutures-impregnated-with-carbazate-activated-polyvinyl-alcohol-reduce-intraperitoneal-adhesions
#17
F Fredriksson, F Sellberg, T Bowden, T Engstrand, D Berglund, H E Lilja
BACKGROUND: Intraperitoneal adhesions cause significant morbidity. They occur after peritoneal trauma, which induces oxidative stress with production of inflammatory cytokines, peroxidized proteins (carbonyls) and lipids (aldehydes). This study aimed to investigate if carbazate-activated polyvinyl alcohol (PVAC), an aldehyde-carbonyl inhibitor, can reduce intraperitoneal adhesions in an experimental model. MATERIAL AND METHODS: Male Sprague-Dawley rats (n=110) underwent laparotomy, cecal abrasion and construction of a small bowel anastomosis...
February 1, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28187094/extraperitoneal-radical-trachelectomy-with-pelvic-lymphadenectomy-a-novel-fertility-preserving-option-for-early-stage-cervical-cancer-patients
#18
Seiji Mabuchi, Tadashi Kimura
OBJECTIVE: Radical trachelectomy combined with pelvic lymphadenectomy has been used to treat early stage cervical cancer patients who wish to preserve their fertility. Although vaginal, abdominal, laparoscopic, and robotic approaches have been used during this procedure, all of these approaches cause peritoneal damage, which could result in periadnexal adhesion. The aim of the present study was to introduce and discuss a novel fertility-preserving option, extraperitoneal radical trachelectomy with pelvic lymphadenectomy...
March 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28185616/tuberculous-peritonitis
#19
Urvashi Vaid, Gregory C Kane
Tuberculous peritonitis is rare in the United States but continues to be reported to occur in certain high-risk populations, which include patients with AIDS or cirrhosis, patients on continuous ambulatory peritoneal dialysis, recent immigrants from areas of high endemicity, and those who are immunosuppressed. The diagnosis of this disease requires a high clinical index of suspicion and should be considered in the differential of ascites with a lymphocyte predominance and serum-ascitic albumin gradient of <1...
January 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28181039/irf3-inhibits-neutrophil-recruitment-in-mice-infected-with-pseudomonas-aeruginosa
#20
Zhenghao Piao, Haiying Yuan, Cuili Wang, Liyun Shi
Pseudomonas aeruginosa is the major cause of morbidity and mortality in patients with ventilator-associated pneumonia. Interferon regulatory factor 3 (IRF3) is a transcription factor that plays an important role in the immune response to viral infection via the IRF3/IFN-β signaling pathway. Controversial data exist regarding the role of IRF3 in immune cell recruitment during bacterial infections. IRF3 has been shown to promote neutrophil recruitment and bacterial clearance in mice infected with P. aeruginosa by inducing the production of specific chemokines and cytokines...
February 8, 2017: Inflammation
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