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Omentum, ovarian cancer

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https://www.readbyqxmd.com/read/29348860/silencing-ror1-and-ror2-inhibits-invasion-and-adhesion-in-an-organotypic-model-of-ovarian-cancer-metastasis
#1
Claire Henry, Neville Hacker, Caroline Ford
OBJECTIVE: Elevated expression of the ROR1 and ROR2 Wnt receptors has been noted in both the tumour and stromal compartments of ovarian cancer patient tissue samples. In vitro studies have suggested these receptors play a role in ovarian cancer metastasis. However, these previous studies have utilised simple 2D in vitro models to investigate cancer cell growth and migration, which does not allow investigation of stromal involvement in Wnt driven metastasis. AIM: To investigate targeting ROR1 and ROR2 using a primary co-culture 3D model of epithelial ovarian cancer dissemination to the omentum...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29324540/metastatic-involvement-of-lesser-sac-in-advanced-epithelial-ovarian-cancer
#2
Asima Mukhopadhyay, Nicolò Bizzarri, Melissa Bradbury, Subir Sinha, Jaydip Bhaumik, C William Helm
OBJECTIVES: In advanced epithelial ovarian cancer (AOC), lesser sac (LS) metastasis particularly to the supragastric LS (SGLS) may be overlooked, resulting in unrecognized residual disease. We aimed to identify the frequency, distribution, and predictors of LS metastasis using laparoscopic evaluation at laparotomy and perioperative surgical complications associated with evaluation and resection/ablation. METHODS: Prospective observational study in consecutive patients with AOC undergoing laparotomy for primary or interval cytoreductive surgery in 2 centers between November 2013 and December 2016...
January 10, 2018: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/29245346/two-independent-incidences-of-skin-metastases-in-the-umbilicus-and-abdominal-wall-in-ovarian-serous-adenocarcinoma-a-case-report-and-review-of-the-literature
#3
Hongyan Cheng, Chunmei Gao, Runtong Zhang, Zhaojie Yang, Guiyu Zhang
RATIONALE: Advanced ovarian cancer is usually associated with intra-abdominal metastases and while it commonly spreads directly to the omentum, intestine, liver, or other organs, it can also metastasize through the lymphatic channels and the hematogenous pathway. With an increasing number of invasive operations being performed with chemoradiotherapy, the incidence of extra-abdominal metastases has risen. Nevertheless, ovarian cancer with skin metastases is quite rare. PATIENT CONCERNS: We report a case of ovarian cancer with two independent incidences of skin metastases in the umbilicus and abdominal wall...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29221185/tgf%C3%AE-1-in-fibroblasts-derived-exosomes-promotes-epithelial-mesenchymal-transition-of-ovarian-cancer-cells
#4
Wenqian Li, Xiaoxue Zhang, Ji Wang, Mengchen Li, Canhui Cao, Jiahong Tan, Ding Ma, Qinglei Gao
Cancer-associated fibroblasts (CAF), a major component of the tumor microenvironment, play an important role in interacting with neoplastic cells to promote ovarian cancer progression. Exosomes are nano-sized vesicles that mediate the cross-talk between different cell types. An increasing number of studies have focused on the fact that tumor cell-derived exosomes influence stromal cells. However, the mechanism by which CAF-derived exosomes modulate cancer cells in ovarian cancer remains obscure. To investigate the role of CAF exosomes in ovarian cancer, we examined the exosomal content of paired primary, metastatic and normal fibroblasts from seven stage IIIC ovarian cancer patients by ELISA...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29187404/lsr-antibody-therapy-inhibits-ovarian-epithelial-tumor-growth-by-inhibiting-lipid-uptake
#5
Kosuke Hiramatsu, Satoshi Serada, Takayuki Enomoto, Yusuke Takahashi, Satoshi Nakagawa, Satoshi Nojima, Akiko Morimoto, Shinya Matsuzaki, Takuhei Yokoyama, Tsuyoshi Takahashi, Minoru Fujimoto, Hiroshi Takemori, Yutaka Ueda, Kiyoshi Yoshino, Eiichi Morii, Tadashi Kimura, Tetsuji Naka
Epithelial ovarian cancer (EOC) is the most lethal gynecologic malignancy but it still lacks effective treatment options. In this study, we utilized proteomic technology to identify lipolysis-stimulated lipoprotein receptor (LSR) as a new tumor antigen of EOC. Immunohistochemical analysis of EOC tissues in conjunction with survival analysis of EOC patients showed that high expression of LSR is associated with poor prognosis. High LSR expression also occurred in tumor metastases including to the lymph node and omentum...
November 29, 2017: Cancer Research
https://www.readbyqxmd.com/read/29039536/adipose%C3%A2-derived-mesenchymal-stem-cells-attenuate-cisplatin%C3%A2-induced-apoptosis-in-epithelial-ovarian-cancer-cells
#6
Yiping Wen, Yan Guo, Zaiju Huang, Jing Cai, Zehua Wang
Environment-mediated drug resistance (EMDR) serves an important role in tumor chemotherapy resistance. Adipose‑derived mesenchymal stem cells (ADSC) are an important component of the tumor microenvironment. However, the role of ADSC in EMDR remains unclear. Therefore, in order to clarify whether ADSCs contribute to the cisplatin‑mediated apoptosis in epithelial ovarian cancer (EOC), the present study isolated ADSCs from the omentum of women with benign disease and collected the ADSC culture medium as conditioned medium...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29024694/cathepsin-d-non-proteolytically-induces-proliferation-and-migration-in-human-omental-microvascular-endothelial-cells-via-activation-of-the-erk1-2-and-pi3k-akt-pathways
#7
Md Zahidul I Pranjol, Nicholas J Gutowski, Michael Hannemann, Jacqueline L Whatmore
Epithelial ovarian cancer (EOC) frequently metastasises to the omentum, a process that requires pro-angiogenic activation of human omental microvascular endothelial cells (HOMECs) by tumour-secreted factors. We have previously shown that ovarian cancer cells secrete a range of factors that induce pro-angiogenic responses e.g. migration, in HOMECs including the lysosomal protease cathepsin D (CathD). However, the cellular mechanism by which CathD induces these cellular responses is not understood. The aim of this study was to further examine the pro-angiogenic effects of CathD in HOMECs i...
October 10, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28811560/evidence-for-the-importance-of-post-transcriptional-regulatory-changes-in-ovarian-cancer-progression-and-the-contribution-of-mirnas
#8
Mengnan Zhang, Lilya V Matyunina, L DeEtte Walker, Weixuan Chen, Haopeng Xiao, Benedict B Benigno, Ronghu Wu, John F McDonald
High-throughput technologies have identified significant changes in patterns of mRNA expression over cancer development but the functional significance of these changes often rests upon the assumption that observed changes in levels of mRNA accurately reflect changes in levels of their encoded proteins. We systematically compared the expression of 4436 genes on the RNA and protein levels between discrete tumor samples collected from the ovary and from the omentum of the same OC patient. The overall correlation between global changes in levels of mRNA and their encoding proteins is low (r = 0...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28698469/potential-of-integrin-inhibitors-for-treating-ovarian-cancer-a-literature-review
#9
REVIEW
Masaki Kobayashi, Kenjiro Sawada, Tadashi Kimura
Epithelial ovarian cancer is a fatal disease, with a cure rate of only 30%. Several recent studies have targeted integrins for cancer treatment. Preclinical studies have shown the effectiveness of several integrin inhibitors for blocking cancer progression, especially by blocking angiogenesis. Because the initial critical step in ovarian cancer metastasis is the attachment of cancer cells to the peritoneum or omentum and because clinical trials have provided positive results for anti-angiogenic therapy, therapies targeting integrins may be the most feasible approach for treating cancer...
July 8, 2017: Cancers
https://www.readbyqxmd.com/read/28675934/characterization-of-the-extracellular-matrix-of-normal-and-diseased-tissues-using-proteomics
#10
Alexandra Naba, Oliver M T Pearce, Amanda Del Rosario, Duanduan Ma, Huiming Ding, Vinothini Rajeeve, Pedro R Cutillas, Frances R Balkwill, Richard O Hynes
The extracellular matrix (ECM) is a complex meshwork of insoluble fibrillar proteins and signaling factors interacting together to provide architectural and instructional cues to the surrounding cells. Alterations in ECM organization or composition and excessive ECM deposition have been observed in diseases such as fibrosis, cardiovascular diseases, and cancer. We provide here optimized protocols to solubilize ECM proteins from normal or tumor tissues, digest the proteins into peptides, analyze ECM peptides by mass spectrometry, and interpret the mass spectrometric data...
July 19, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28662703/the-diagnosis-of-a-metastatic-breast-tumor-from-ovarian-cancer-by-the-succession-of-a-p53-mutation-a-case-report
#11
Ryutaro Mori, Manabu Futamura, Kasumi Morimitsu, Chiemi Saigo, Tatsuhiko Miyazaki, Kazuhiro Yoshida
BACKGROUND: Metastatic breast tumors from other organs are very rare. We herein describe the case of a patient with a metastatic breast tumor due to ovarian cancer who was diagnosed by the succession of a p53 mutation. CASE PRESENTATION: The patient was a 59-year-old woman with sigmoid colon stenosis. Diagnostic imaging revealed a pelvic mass, multiple liver tumors, ascites, and multiple swollen para-aortic lymph nodes, suggesting an advanced ovarian tumor. Transverse loop colostomy and partial resection of the greater omentum was performed followed by six cycles of paclitaxel with carboplatin chemotherapy (TC therapy)...
June 29, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28651922/peritoneal-carcinomatosis-in-primary-ovarian-cancer-ultrasound-detection-and-comparison-with-computed-tomography
#12
Zhenhong Qi, Yixiu Zhang, Qing Dai, Yu Xia, Yuxin Jiang
We retrospectively compared detection rates and consistency for diagnosis of peritoneal carcinomatosis (PC) of primary ovarian cancer (OC) between ultrasound (US) and computed tomography (CT) scans in 41 patients whose PC of OC (stages IIC-IV) had been diagnosed by histopathology findings. Compared with CT detection rates, those for US were significantly higher for metastases to the pelvic area (92.3% vs. 43.6%, p < 0.001) and bowel surface (64.0% vs. 16.0%, p = 0.002); however, they did not significantly differ for other sites: omentum, diaphragm, lateral peritoneum, mesenteric, hepatic and splenic surfaces...
September 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28649123/extraovarian-primary-peritoneal-carcinomatosis-a-case-report
#13
Gregory Nicolas, Tony Kfoury, Hassan Fawaz, Mahdi Issa
BACKGROUND Extraovarian primary peritoneal carcinoma (EOPPC) is a rare malignant epithelial tumor with an age-adjusted incidence rate of 6.78 per million, which arises from the peritoneal lining with minimal or no ovarian involvement. EOPPC is a diagnosis of exclusion with the absence of other identifiable primary sites and after surgical assessment and consideration of the histological report to evaluate the extent of ovarian invasion. CASE REPORT A 66-year-old woman complained of mild postprandial epigastric pain...
June 26, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28632775/unique-cellular-interactions-between-pancreatic-cancer-cells-and-the-omentum
#14
Valerya Feygenzon, Shelly Loewenstein, Nir Lubezky, Metsada Pasmanic-Chor, Osnat Sher, Joseph M Klausner, Guy Lahat
Pancreatic cancer is a common cause of cancer-related mortality. Omental spread is frequent and usually represents an ominous event, leading to patient death. Omental metastasis has been studied in ovarian cancer, but data on its role in pancreatic cancer are relatively scarce and the molecular biology of this process has yet to be explored. We prepared tissue explants from human omental fat, and used conditioned medium from the explants for various in vitro and in vivo experiments designed to evaluate pancreatic cancer development, growth, and survival...
2017: PloS One
https://www.readbyqxmd.com/read/28520571/is-omentectomy-mandatory-among-early-stage-i-ii-malignant-ovarian-germ-cell-tumor-patients-a-retrospective-study-of-223-cases
#15
Wenyan Xu, Yanfang Li
OBJECTIVE: The aim of the study was to investigate whether omentectomy (OMT) is necessary in the operation for apparently early stage malignant ovarian germ cell tumors (MOGCTs). METHODS AND MATERIALS: Searching medical records database of Sun Yat-sen University Cancer Center from January 1, 1966, to November 30, 2015, patients with MOGCTs were identified and their age, year of diagnosis, tumor grade, histologic subtype, International Federation of Gynecology and Obstetrics stage, nodal findings, gross observation of omentum, and performance of OMT were assessed...
September 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28495239/prognostic-value-of-miliary-versus-non-miliary-sub-staging-in-advanced-ovarian-cancer
#16
Kevin H Eng, Kayla Morrell, Kristen Starbuck, Chandra Spring-Robinson, Aalia Khan, Dana Cleason, Levent Akman, Emese Zsiros, Kunle Odunsi, J Brian Szender
OBJECTIVE: The presence of miliary disease during initial ovarian cancer debulking may reflect a distinct mode of peritoneal spread independent from size-based tumor staging and may explain variation in response to treatment and survival outcomes. To infer the prevalence, presentation and clinical implications of miliary disease we reviewed existing surgical records. METHODS: Reports were available for 1008 primary debulking surgeries for ovarian, primary peritoneal or fallopian tube cancer between 2001 and 2015 (685 reports from 2005 to 2015)...
July 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28490413/risk-factors-for-appendiceal-involvement-in-women-with-epithelial-ovarian-cancer
#17
Mustafa Erkan Sarı, Elmas Korkmaz, Murat Öz, Tayfun Güngör, Mehmet Mutlu Meydanlı
OBJECTIVE: To evaluate the risk factors for appendiceal involvement in women with epithelial ovarian cancer (EOC) who underwent appendectomy at the time of initial surgery. MATERIAL AND METHODS: Patients with a final diagnosis of EOC who underwent appendectomy at the time of initial surgery were evaluated retrospectively. Risk factors related to the presence of appendiceal involvement were analyzed. RESULTS: A total of 210 patients underwent appendectomy during staging surgery...
September 1, 2017: Journal of the Turkish German Gynecological Association
https://www.readbyqxmd.com/read/28456593/the-role-of-mir-372-in-ovarian-carcinoma-cell-proliferation
#18
Xue Guan, Zhi-Hong Zong, Shuo Chen, Xiu-Bo Sang, Dan-Dan Wu, Li-Li Wang, Yao Liu, Yang Zhao
OBJECTIVES: MicroRNA-372 has been shown to be associated with multiple tumors' development and progression, by regulating the expression of proteins involved in cell cycle and apoptosis. However, the specific mechanism and function of miR-372 in ovarian carcinoma are not clear. Our study explored the role of miR-372 in ovarian carcinoma cell cycle and proliferation. MATERIALS AND METHODS: MiR-372 expression was quantified in normal ovarian tissue, benign tumors, primary ovarian carcinomas and metastatic omentum by qRT-PCR...
August 15, 2017: Gene
https://www.readbyqxmd.com/read/28346091/a-high-throughput-screening-model-of-the-tumor-microenvironment-for-ovarian-cancer-cell-growth
#19
Madhu Lal-Nag, Lauren McGee, Rajarshi Guha, Ernst Lengyel, Hilary A Kenny, Marc Ferrer
The tumor microenvironment plays an important role in the processes of tumor growth, metastasis, and drug resistance. We have used a multilayered 3D primary cell culture model that reproduces the human ovarian cancer metastatic microenvironment to study the effect of the microenvironment on the pharmacological responses of different classes of drugs on cancer cell proliferation. A collection of oncology drugs was screened to identify compounds that inhibited the proliferation of ovarian cancer cells growing as monolayers or forming spheroids, on plastic and on a 3D microenvironment culture model of the omentum metastatic site, and also cells already in preformed spheroids...
June 2017: SLAS Discovery
https://www.readbyqxmd.com/read/28275576/the-unique-molecular-and-cellular-microenvironment-of-ovarian-cancer
#20
REVIEW
Thomas Worzfeld, Elke Pogge von Strandmann, Magdalena Huber, Till Adhikary, Uwe Wagner, Silke Reinartz, Rolf Müller
The reciprocal interplay of cancer cells and host cells is an indispensable prerequisite for tumor growth and progression. Cells of both the innate and adaptive immune system, in particular tumor-associated macrophages (TAMs) and T cells, as well as cancer-associated fibroblasts enter into a malicious liaison with tumor cells to create a tumor-promoting and immunosuppressive tumor microenvironment (TME). Ovarian cancer, the most lethal of all gynecological malignancies, is characterized by a unique TME that enables specific and efficient metastatic routes, impairs immune surveillance, and mediates therapy resistance...
2017: Frontiers in Oncology
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