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Neuroimmune Regulation of Surgery-Associated Metastases. Cells 2021; 10:cells10020454. [PMID: 33672617 PMCID: PMC7924204 DOI: 10.3390/cells10020454] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 02/12/2021] [Accepted: 02/17/2021] [Indexed: 02/06/2023] Open
Abstract
Surgery remains an essential therapeutic approach for most solid malignancies. Although for more than a century accumulating clinical and experimental data have indicated that surgical procedures themselves may promote the appearance and progression of recurrent and metastatic lesions, only in recent years has renewed interest been taken in the mechanism by which metastasizing of cancer occurs following operative procedures. It is well proven now that surgery constitutes a risk factor for the promotion of pre-existing, possibly dormant micrometastases and the acceleration of new metastases through several mechanisms, including the release of neuroendocrine and stress hormones and wound healing pathway-associated immunosuppression, neovascularization, and tissue remodeling. These postoperative consequences synergistically facilitate the establishment of new metastases and the development of pre-existing micrometastases. While only in recent years the role of the peripheral nervous system has been recognized as another contributor to cancer development and metastasis, little is known about the contribution of tumor-associated neuronal and neuroglial elements in the metastatic disease related to surgical trauma and wound healing. Specifically, although numerous clinical and experimental data suggest that biopsy- and surgery-induced wound healing can promote survival and metastatic spread of residual and dormant malignant cells, the involvement of the tumor-associated neuroglial cells in the formation of metastases following tissue injury has not been well understood. Understanding the clinical significance and underlying mechanisms of neuroimmune regulation of surgery-associated metastasis will not only advance the field of neuro–immuno–oncology and contribute to basic science and translational oncology research but will also produce a strong foundation for developing novel mechanism-based therapeutic approaches that may protect patients against the oncologically adverse effects of primary tumor biopsy and excision.
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Abstract
Bone is the most frequent site of breast cancer and prostate cancer metastasis, and one of the most common sites of metastasis for many solid tumors. Once cancer cells colonize in the bone, it imposes a major clinical challenge for the treatment of the disease, and fatality rates increase drastically. Bone, the largest organ in the body, provides a fertile microenvironment enriched with nutrients, growth factors and hormones, a generous reward for cancer cells. Dependent on cancer type, cancer cells can cause osteoblastic (bone forming) or osteolytic lesions to promote the net resorption and/or release of growth factors from the bone extracellular matrix. These processes activate a "vicious cycle", leading to disruption of bone integrity and promoting cancer cell growth and migration. Cancer cells influence the bone microenvironment favoring their colonization and growth. In order to metastasize to the bone, cancer cells must first migrate from the site of origin, and once established within the bone, they must overcome the dormant inducing effects of resident cells. If successful, cancer cells can then colonize and continually disrupt bone homeostasis that is primarily maintained by osteocytes, the most abundant bone cell type. For example, it has been shown that exercise induces osteocytes to release anabolic factors that inhibit osteoclast resorptive activity, promote dormancy and the release of anti-cancer factors that inhibit breast cancer cell metastasis. In this review, we will summarize recent research findings and provide mechanistic insights related to the role of osteocytes in osteolytic metastasis.
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Fornetti J, Welm AL, Stewart SA. Understanding the Bone in Cancer Metastasis. J Bone Miner Res 2018; 33:2099-2113. [PMID: 30476357 DOI: 10.1002/jbmr.3618] [Citation(s) in RCA: 248] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 10/17/2018] [Accepted: 10/18/2018] [Indexed: 12/11/2022]
Abstract
The bone is the third most common site of metastasis for a wide range of solid tumors including lung, breast, prostate, colorectal, thyroid, gynecologic, and melanoma, with 70% of metastatic prostate and breast cancer patients harboring bone metastasis.1 Unfortunately, once cancer spreads to the bone, it is rarely cured and is associated with a wide range of morbidities including pain, increased risk of fracture, and hypercalcemia. This fact has driven experts in the fields of bone and cancer biology to study the bone, and has revealed that there is a great deal that each can teach the other. The complexity of the bone was first described in 1889 when Stephen Paget proposed that tumor cells have a proclivity for certain organs, where they "seed" into a friendly "soil" and eventually grow into metastatic lesions. Dr. Paget went on to argue that although many study the "seed" it would be paramount to understand the "soil." Since this original work, significant advances have been made not only in understanding the cell-autonomous mechanisms that drive metastasis, but also alterations which drive changes to the "soil" that allow a tumor cell to thrive. Indeed, it is now clear that the "soil" in different metastatic sites is unique, and thus the mechanisms that allow tumor cells to remain in a dormant or growing state are specific to the organ in question. In the bone, our knowledge of the components that contribute to this fertile "soil" continues to expand, but our understanding of how they impact tumor growth in the bone remains in its infancy. Indeed, we now appreciate that the endosteal niche likely contributes to tumor cell dormancy, and that osteoclasts, osteocytes, and adipocytes can impact tumor cell growth. Here, we discuss the bone microenvironment and how it impacts cancer cell seeding, dormancy, and growth. © 2018 American Society for Bone and Mineral Research.
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Affiliation(s)
- Jaime Fornetti
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Alana L Welm
- Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA
| | - Sheila A Stewart
- Departments of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO, USA.,Siteman Cancer Center, Washington University School of Medicine, St. Louis, MO, USA.,Integrating Communication within the Cancer Environment (ICCE) Institute, Washington University School of Medicine, St. Louis, MO, USA
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Kün-Darbois JD, Quenel L, Badja S, Chappard D. Tooth Extraction Locally Stimulates Proliferation of Multiple Myeloma in a Patient with Mandibular Localizations. Acta Haematol 2017; 138:201-207. [PMID: 29207391 DOI: 10.1159/000481425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 09/11/2017] [Indexed: 01/23/2023]
Abstract
OBJECTIVES Multiple myeloma (MM) is characterized by the occurrence of osteolytic lesions. MM treatment usually involves antiresorptive drugs (mainly bisphosphonates). CASE REPORT A patient with an MM presented osteolytic lesions of the mandible. Extraction of teeth 45 and 46 was performed 5 years after the diagnosis of periodontitis. Four months later, osteonecrosis of the jaw (ONJ) was diagnosed at the extraction site. X-ray showed an extension of osteolytic lesions on the right side, close to the extraction site, without modification of the lesions on the left side. Two months later, a curettage was performed because of a painful bone sequestration. X-ray showed an extension of the osteolytic lesions on the right side. RESULTS Histological analysis found a vascularized plasmacytoma of the soft tissues around the ONJ. Analysis of the bone showed mixed lesions with osteonecrotic areas and living bone resorbed by active osteoclasts surrounding a plasmacytoma. The surface area of the osteolytic foci has considerably increased only close to the extraction site. CONCLUSIONS Tooth extraction triggered an ONJ associated with bisphosphonate treatment. However, it also seemed to induce a considerable proliferation of plasma cells at the extraction site; we hypothesize that it is due to the increase in bone remodeling related to the surgical trauma.
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Effects of surgery on the cancer stem cell niche. Eur J Surg Oncol 2016; 42:319-25. [DOI: 10.1016/j.ejso.2015.12.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 11/24/2015] [Accepted: 12/09/2015] [Indexed: 01/12/2023] Open
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Lindgren G, Kjellén E, Wennerberg J, Ekblad L. Wound-healing factors can prime head and neck cancer cells to increase their tumor-forming capacity. Laryngoscope 2016; 126:E213-7. [PMID: 26865530 DOI: 10.1002/lary.25907] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 12/23/2015] [Accepted: 01/11/2016] [Indexed: 11/06/2022]
Abstract
OBJECTIVES/HYPOTHESIS We investigated whether exposing a wound-healing-sensitive cell line to human wound fluid (HWF) could prime the cells to increase their tumor-forming ability in nude mice and, if so, whether this ability can be inhibited by pharmacological substances. STUDY DESIGN Experimental animal model. METHODS Take rate was measured in BALB/c nude mice after pretreatment of the cells with HWF using human serum and fetal bovine serum as controls. Inhibition of signal transducer and activator of transcription 3 (STAT3) with S3I-201 tocilizumab, and of interleukin 6 receptor (IL6R) with tocilizumab was performed. RESULTS Preincubation with HWF resulted in a significant increase in take rate compared to controls. The increase in take rate could be decreased by both STAT3 and IL6R inhibition. CONCLUSIONS The results indicate that head and neck squamous cell cancer cells might be stimulated to increase their tumor-forming ability both close to a surgical wound and at more distant locations, as a consequence of the wound-healing response. The work also suggests new treatment modalities aimed at decreasing these stimulatory effects. LEVEL OF EVIDENCE NA Laryngoscope, 126:E213-E217, 2016.
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Affiliation(s)
- Gustaf Lindgren
- Department of Clinical Sciences, Division of Otolaryngology/Head and Neck Surgery, Lund University, Lund, Sweden, Skåne University Hospital, Lund, Sweden
| | - Elisabeth Kjellén
- Department of Clinical Sciences, Division of Oncology and Pathology, Lund University, Lund, and Skåne University Hospital, Lund, Sweden
| | - Johan Wennerberg
- Department of Clinical Sciences, Division of Otolaryngology/Head and Neck Surgery, Lund University, Lund, Sweden, Skåne University Hospital, Lund, Sweden
| | - Lars Ekblad
- Department of Clinical Sciences, Division of Oncology and Pathology, Lund University, Lund, and Skåne University Hospital, Lund, Sweden
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Hakimoglu Y, Can M, Hakimoglu S, Gorkem Mungan A, Acikgoz S, Cikcikoglu Yildirim N, Aydin Mungan N, Ozkocak Turan I. The effects of nitrous oxide on vascular endothelial growth factor (VEGF) and its soluble receptor 1 (VEGFR1) in patient undergoing urological surgery. Pak J Med Sci 2014; 30:45-9. [PMID: 24639829 PMCID: PMC3955540 DOI: 10.12669/pjms.301.3197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 05/31/2013] [Accepted: 10/10/2013] [Indexed: 01/09/2023] Open
Abstract
Objective: Anesthesia and surgical intervention, leads to the development of systemic inflammatory response. The severity of the inflammatory response depends on the pharmacological effects of anesthetic agents and duration of anesthesia. Objective of the study was to investigate the effect of nitrous oxide on VEGF and VEGFR1 levels in patients undergoing surgery. Methods: Forty-four patients undergoing elective urological surgery were included in the study. Anesthesia maintenance was provided with 1-2 MAC sevoflurane, O2 50%, N2O 50% in 4L/m transporter gase for group 1 (n=22) and 1-2 MAC sevoflurane, O2 50%, air 50% in 4L/m transporter gase for group 2 (n=22) Venous blood samples for the measurement of VEGF and VEGFR1 were taken before the induction of anaesthesia, 60 minutes of anesthesia induction, at the end of anaesthesia and 24 hours after operation. In statistical analysis Bonferroni test and analysis of variance at the repeated measures were used Results: In the postoperative period serum VEGF levels had decreased significantly in both group whereas VEGFR1 did not show a significant change. Conclusions: Nitrous oxide showed significant effect on angiogenic parameters. Further detailed studies are required to evaluate the effect of nitrous oxide.
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Affiliation(s)
- Yasemin Hakimoglu
- Yasemin Hakimoglu, MD, Department of Biochemistry, Hatay Antakya State Hospital, Hatay, Turkey
| | - Murat Can
- Murat Can, MD, Associate Professor, Department of Biochemistry, Bulent Ecevit University, Medical Faculty, Zonguldak, Turkey
| | - Sedat Hakimoglu
- Sedat Hakimoglu, MD, Assistant Professor, Department of Anesthesiology and Reanimation, Mustafa Kemal University, Medical Faculty, Hatay, Turkey
| | - Ayca Gorkem Mungan
- Ayca Gorkem Mungan, MD, Associate Professor, Department of Biochemistry, Bulent Ecevit University, Medical Faculty, Zonguldak, Turkey
| | - Sereften Acikgoz
- Sereften Acikgoz, MD, Associate Professor, Department of Biochemistry, Bulent Ecevit University, Medical Faculty, Zonguldak, Turkey
| | - Nuran Cikcikoglu Yildirim
- Nuran Cikcikoglu Yildirim, PhD, Department of Environmental Engineering, Tunceli University, Faculty of Engineering, Tunceli, Turkey
| | - Necmettin Aydin Mungan
- Necmettin Aydin Mungan, MD, Professor, Department of Urology, Bulent Ecevit University, Medical Faculty, Zonguldak, Turkey
| | - Isil Ozkocak Turan
- Isil Ozkocak Turan, MD, Professor, Department of Anesthesiology and Reanimation, Bulent Ecevit University, Medical Faculty, Zonguldak, Turkey
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Gao D, Li S. Stimuli-induced organ-specific injury enhancement of organotropic metastasis in a spatiotemporal regulation. Pathol Oncol Res 2013; 20:27-42. [PMID: 24357158 DOI: 10.1007/s12253-013-9734-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Accepted: 12/05/2013] [Indexed: 12/11/2022]
Abstract
The relationship between inflammation and tumorigenesis has been established. Recently, inflammation is also reported to be a drive force for cancer metastasis. Further evidences show that various stimuli directly induced-injury in a specific organ can also promote metastasis in this organ, which include epidemiological reports, clinical series and experimental studies. Each type of cancer has preferential sites for metastasis, which is also due to inflammatory factors that are released by primary cancer to act on these sites and indirectly induce injuries on them. Host factors such as stress,fever can also influence distant metastasis in a specific site through stimulation of immune and inflammatory effects. The five aspects support an idea that specific-organ injury directly induced by various stimuli or indirectly induced by primary tumor or host factors activation of proinflammatory modulators can promote metastasis in this organ through a spatiotemporal regulation, which has important implications for personalized prediction, prevention and management of cancer metastasis.
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Affiliation(s)
- Dongwei Gao
- , 536 Hospital of PLA, 29# Xiadu street, Xining, 810007, Qinghai Province, People's Republic of China,
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Ekblad L, Lindgren G, Persson E, Kjellén E, Wennerberg J. Cell-line-specific stimulation of tumor cell aggressiveness by wound healing factors - a central role for STAT3. BMC Cancer 2013; 13:33. [PMID: 23351302 PMCID: PMC3585883 DOI: 10.1186/1471-2407-13-33] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Accepted: 01/23/2013] [Indexed: 12/14/2022] Open
Abstract
Background Local recurrence is a major factor affecting survival after treatment for head and neck squamous cell carcinoma (HNSCC). It is possible that the normal processes involved in wound healing after surgical removal of a primary tumor can boost the regrowth of residual cancer cells, thereby contributing to the recurrent growth. In this work, we collected human wound fluids and used them to investigate the effect of wound healing factors on HNSCC cell lines in vitro. Methods Wound fluids were collected from thyroidectomized patients diagnosed with benign disease and were included in assays of cell proliferation, migration, cell scattering, and invasion. The involvement of intracellular signaling pathways and membrane receptors were investigated by western blotting and the inclusion of specific inhibitors. Results One out of four cell lines was greatly stimulated in proliferation, migration, cell scattering, and invasion by the addition of wound fluid as compared with addition of fetal bovine or human serum. These effects were accompanied by a sharp increase in activation of signal transducer and activator of transcription 3 (STAT3). Inhibition of STAT3 activation abolished the wound fluid response, showing that STAT3 plays an important role in the wound healing response. Several of the observed phenotypic changes were epithelial-to-mesenchymal transition (EMT)-like, but the appropriate changes were not seen in any of the EMT markers investigated. The involvement of c-Met or epidermal growth factor receptor family members was excluded, while the interleukin-6 receptor was found to be partly responsible for the activation of STAT3. Conclusions In conclusion, we found cell-line-specific effects of wound healing factors on HNSCC, setting the stage for therapy development and predictive opportunities.
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Affiliation(s)
- Lars Ekblad
- Department of Oncology, Lund University, Lund, Sweden.
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Retsky M, Demicheli R, Hrushesky W, Baum M, Gukas I. Surgery triggers outgrowth of latent distant disease in breast cancer: an inconvenient truth? Cancers (Basel) 2010; 2:305-37. [PMID: 24281072 PMCID: PMC3835080 DOI: 10.3390/cancers2020305] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Revised: 03/25/2010] [Accepted: 03/26/2010] [Indexed: 12/16/2022] Open
Abstract
We review our work over the past 14 years that began when we were first confronted with bimodal relapse patterns in two breast cancer databases from different countries. These data were unexplainable with the accepted continuous tumor growth paradigm. To explain these data, we proposed that metastatic breast cancer growth commonly includes periods of temporary dormancy at both the single cell phase and the avascular micrometastasis phase. We also suggested that surgery to remove the primary tumor often terminates dormancy resulting in accelerated relapses. These iatrogenic events are apparently very common in that over half of all metastatic relapses progress in that manner. Assuming this is true, there should be ample and clear evidence in clinical data. We review here the breast cancer paradigm from a variety of historical, clinical, and scientific perspectives and consider how dormancy and surgery-driven escape from dormancy would be observed and what this would mean. Dormancy can be identified in these diverse data but most conspicuous is the sudden synchronized escape from dormancy following primary surgery. On the basis of our findings, we suggest a new paradigm for early stage breast cancer. We also suggest a new treatment that is meant to stabilize and preserve dormancy rather than attempt to kill all cancer cells as is the present strategy.
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Affiliation(s)
- Michael Retsky
- Harvard School of Public Health, BLDG I, Rm 1311, 665 Huntington, Ave., Boston, MA 02115, USA
| | - Romano Demicheli
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale Tumori, Via Venezian 1, 20133 Milano, Italy; E-Mail:
| | - William Hrushesky
- University of South Carolina, School of Medicine, Columbia, SC, USA; E-Mail:
| | - Michael Baum
- Royal Free and UCL Medical School, Centre for Clinical Science and Technology, Clerkenwell Building, Archway Campus, Highgate Hill, London, N19 5LW, UK; E-Mail:
| | - Isaac Gukas
- Breast Unit, Department of General Surgery, James Paget University Hospital, Gorleston, Great Yarmouth, UK; E-Mail:
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Demicheli R, Retsky MW, Hrushesky WJM, Baum M, Gukas ID. The effects of surgery on tumor growth: a century of investigations. Ann Oncol 2008; 19:1821-8. [PMID: 18550576 DOI: 10.1093/annonc/mdn386] [Citation(s) in RCA: 270] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
A few clinical investigations suggest that while primary breast cancer surgical removal favorably modifies the natural history for some patients, it may also hasten the metastatic development for others. The concepts underlying this disease paradigm, i.e. tumor homeostasis, tumor dormancy and surgery-driven enhancement of metastasis development, have a long history that is reviewed. The review reveals the context in which these concepts were conceived and structured to explain experimental data and shows that they are not so new and far fetched. The idea that surgical cancer resection has both beneficial and adverse effects upon cancer spread and growth that result from the modulation of tumor dormancy by the resection should be considered a potentially fruitful working hypothesis.
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Affiliation(s)
- R Demicheli
- Department of Medical Oncology, Istituto Nazionale Tumori, Milano, Italy.
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Corrigan M, Cahill RA, Redmond HP. The immunomodulatory effects of laparoscopic surgery. Surg Laparosc Endosc Percutan Tech 2007; 17:256-61. [PMID: 17710044 DOI: 10.1097/sle.0b013e318059b9c3] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Laparoscopic alternatives to conventional surgical procedures confer many advantages to patients including reduced postoperative pain, shortened convalescence and, perhaps, improved disease-related outcomes. The diminished degree of immune dysfunction apparent with these techniques may underpin these beneficial aspects. However, minimal access is accompanied by various ancillary anesthetic and mechanical associations (including the induction of a carbon dioxide pneumoperitoneum), which must be considered in addition to reduced tissue trauma when attempting to correlate cause with effect. Furthermore, the opportunity to establish causation between the immunomodulatory aspects of laparoscopy and subsequent clinical outcome by prospective, randomized study is difficult because of the rapid incorporation of minimal access techniques into clinical practice. Therefore, experimental in vitro and in vivo studies must be used to complement the limitations of clinical studies in this area. Although the initial investigations into the immunological effects of laparoscopy are encouraging, many of the intricacies associated with this approach still await elaboration.
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Affiliation(s)
- Mark Corrigan
- Department of Academic Surgery, Cork University Hospital, Wilton, Cork, Ireland
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Coffey JC, Wang JH, Bouchier-Hayes D, Cotter TG, Redmond HP. The targeting of phosphoinositide-3 kinase attenuates pulmonary metastatic tumor growth following laparotomy. Ann Surg 2006; 243:250-6. [PMID: 16432359 PMCID: PMC1448916 DOI: 10.1097/01.sla.0000197712.71055.12] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
OBJECTIVE We aimed to characterize a potential role for phosphatidylinositol 3-kinase (PI3k) in leading to accelerated postoperative metastatic tumor growth. BACKGROUND PI3k enhances tumor cell survival in part by phosphorylating Akt and reducing apoptosis. Postoperatively, apoptosis is reduced within local recurrences and distant metastases. This reduction is associated with the phenomenon of accelerated postoperative tumor growth. METHODS Balb/c mice underwent a tail vein injection of 1x10 metastatic murine mammary adenocarcinoma 4T1 cells. Animals were divided into the following treatment groups (n=10/group): group A, controls; group B, DMSO intraperitoneally (IP) daily from days 14 to 21; group C, IP LY294002 daily from days 14 to 21; group D, laparotomy only; group E, laparotomy followed by IP DMSO for 7 days; and group F, laparotomy followed by LY294002 IP for 7 days. All laparotomies were performed on day 14. Animals were killed at day 28. Metastatic tumor burden was assessed using the lung/body weight ratio and a histologic metastatic index. Mitotic counts and apoptotic indices were established using a combination of hematoxylin and eosin histology and TUNEL immunohistochemistry. A parallel survival study was performed, and PI3k activity was assessed using western blots for phospho-Akt. RESULTS Laparotomy was associated with increased systemic tumor burden (P=0.001). Postoperatively, LY294002 significantly attenuated metastatic tumor growth (P<0.001). Effective PI3k inhibition was confirmed by demonstrating a reduced Akt phosphorylation. Moreover, PI3k inhibition led to reduced proliferation, increased apoptosis (P<0.001), and enhanced postoperative survival (P<0.001). CONCLUSIONS Targeting PI3k with postoperative LY294002 significantly attenuates the acceleration in postoperative metastatic tumor growth seen following laparotomy.
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Affiliation(s)
- J Calvin Coffey
- Department of Surgery, Cork University Hospital, University College Cork, Cork, Ireland.
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Karamouzis MV, Ardavanis A, Alexopoulos A, Papadopoulou A, Apostolikas N, Rigatos G. Multiple cutaneous acral metastases in a woman with breast adenocarcinoma treated with pegylated liposomal doxorubicin: incidental or aetiological association? Eur J Cancer Care (Engl) 2005; 14:267-71. [PMID: 15952972 DOI: 10.1111/j.1365-2354.2005.00573.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
This paper reports the case of a 45-year-old female with histologically documented, multiple cutaneous metastases in the palmar and plantar surface of the fingers and toes originating from a breast adenocarcinoma after treatment with a docetaxel and pegylated liposomal doxorubicin regimen. The rarity of such a metastatic pattern from breast cancer and the eventual association with the chemotherapy administered are thoroughly discussed.
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Affiliation(s)
- M V Karamouzis
- 1st Department of Medical Oncology, St. Savvas Anticancer-Oncologic Hospital, 11522 Athens, Greece.
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El Saghir NS, Elhajj II, Geara FB, Hourani MH. Trauma-associated growth of suspected dormant micrometastasis. BMC Cancer 2005; 5:94. [PMID: 16080790 PMCID: PMC1190165 DOI: 10.1186/1471-2407-5-94] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2005] [Accepted: 08/04/2005] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Cancer patients may harbor micrometastases that remain dormant, clinically undetectable during a variable period of time. A traumatic event or surgery may trigger the balance towards tumor growth as a result of associated angiogenesis, cytokine and growth factors release. CASE PRESENTATION We describe a patient with non-small lung cancer who had a rapid tumor growth and recurrence at a minor trauma site of his skull bone. CONCLUSION This case is an illustration of the phenomenon of tumor growth after trauma or surgery and its associated cellular mechanisms. This phenomenon deserves further investigation and study.
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Affiliation(s)
- Nagi S El Saghir
- Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Ihab I Elhajj
- Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Fady B Geara
- Department of Radiation Therapy, American University of Beirut Medical Center, Beirut, Lebanon
| | - Mukbil H Hourani
- Department of Diagnostic Radiology, American University of Beirut Medical Center, Beirut, Lebanon
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Raa ST, Oosterling SJ, van der Kaaij NP, van den Tol MP, Beelen RHJ, Meijer S, van Eijck CHJ, van der Sijp JRM, van Egmond M, Jeekel J. Surgery promotes implantation of disseminated tumor cells, but does not increase growth of tumor cell clusters. J Surg Oncol 2005; 92:124-9. [PMID: 16231370 DOI: 10.1002/jso.20273] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
INTRODUCTION Local recurrence and peritoneal dissemination is common after intentionally curative resection of colorectal carcinoma. It is not yet clear which mechanisms stimulate post-operative intra-abdominal tumor development. Enhanced adhesion or growth of tumor cells and/or post-operative immuno suppression may influence tumor recurrence. AIMS OF THE STUDY In the present study, we evaluated effects of local and remote surgery on intra-abdominal tumor development. MATERIALS AND METHODS A standardized intra-abdominal trauma was inflicted by rubbing both uterus horns in laparotomy groups, while a dorsolateral thoracotomy was performed in thoracotomy groups (on day -1, 0, or +3). To induce tumor development rats were injected intra-peritoneally with the coloncarcinoma cell line CC531s on day 0 and evaluated after 21 days. RESULTS Rats undergoing laparotomy and injection on day 0 showed significantly higher tumorload than control rats (195 +/- 20 vs. 47 +/- 29, P < 0.001). When a laparotomy was performed, the day before tumor inoculation even higher tumorload was seen (245 +/- 37 vs. 195 +/- 20, P < 0.01). Strikingly, performing a thoracotomy on the day before or on the same day as tumor inoculation resulted in enhanced tumorload compared to controls as well (135 +/- 84 vs. 47 +/- 29; P < 0.001 and 88 +/- 38 vs. 47 +/- 29; P < 0.02, respectively). Either laparotomy or thoracotomy 3 days after tumor cell inoculation did not affect growth of pre-existing tumor cell clusters. CONCLUSIONS The (post) surgical intra-peritoneal microenvironment enhances successful implantation of spilled tumor cells, whereas growth of adhered tumor cell clusters is not affected. The inflammatory response as a result of remote surgery promotes successful tumor development as well.
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Affiliation(s)
- S Ten Raa
- Department of General Surgery, ErasmusMC, Rotterdam, The Netherlands
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Abstract
In a patient who presented with an osteosarcoma of the proximal humerus, systemic staging revealed a lesion in the contralateral humerus, which was shown to be an enchondroma after open biopsy. The patient had a local recurrence develop, which necessitated forequarter amputation. Shortly thereafter, the patient had pain develop at the contralateral biopsy site, and examinations and repeat biopsy revealed metastatic osteosarcoma. We think it is likely that surgical trauma contributed to the development of this unusual metastasis. In this clinical situation, consideration should be given to doing the biopsy and definitive resection on separate occasions.
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Affiliation(s)
- Peter C Ferguson
- Royal Orthopaedic Hospital Oncology Service, Royal Orthopaedic Hospital, Birmingham, UK.
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Coffey JC, Wang JH, Smith MJF, Bouchier-Hayes D, Cotter TG, Redmond HP. Excisional surgery for cancer cure: therapy at a cost. Lancet Oncol 2003; 4:760-8. [PMID: 14662433 DOI: 10.1016/s1470-2045(03)01282-8] [Citation(s) in RCA: 252] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Excisional surgery is one of the primary treatment modalities for cancer. Minimal residual disease (MRD) is the occult neoplastic disease that remains in situ after curative surgery. There is increasing evidence that tumour removal alters the growth of MRD, leading to perioperative tumour growth. Because neoplasia is a systemic disease, this phenomenon may be relevant to all patients undergoing surgery for cancer. In this review we discuss the published work that addresses the effects of tumour removal on subsequent tumour growth and the mechanisms by which tumour excision may alter residual tumour growth. In addition, we describe therapeutic approaches that may protect patients against any oncologically adverse effects of tumour removal. On the basis of the evidence presented, we propose a novel therapeutic paradigm; that the postoperative period represents a window of opportunity during which the patient may be further protected against the oncological effects of tumour removal.
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Affiliation(s)
- J C Coffey
- Department of Surgery, Cork University Hospital and University College Cork, Ireland.
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Fink C, Lüdemann H, Wasser K, Delorme S. Incidental finding of a mucinous carcinoma of the breast by dynamic MRI in a patient with a history of breast trauma (horse bite): incidental mucinous carcinoma after breast trauma. Clin Imaging 2002; 26:254-7. [PMID: 12140155 DOI: 10.1016/s0899-7071(02)00429-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Occasional reports on the coincidence of previous trauma of the breast and the development of invasive breast cancer have been published. Furthermore, traumatic changes of the breast tissue can clinically and radiographically mimic malignant breast disease. We report of a 52-year-old female presenting with increasing mammographic microcalcifications after a trauma of the breast due to a horse bite. Dynamic MRI was able to exclude malignancy at the site of the trauma but did detect a clinically and radiographically nonsymptomatic mucinous carcinoma of the breast.
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Affiliation(s)
- Christian Fink
- Department of Radiology (E0101), German Cancer Research Center (DKFZ), INF 280, Heidelberg, Germany.
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20
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Da Costa ML, Redmond HP, Bouchier-Hayes DJ. Taurolidine improves survival by abrogating the accelerated development and proliferation of solid tumors and development of organ metastases from circulating tumor cells released following surgery. J Surg Res 2001; 101:111-9. [PMID: 11735264 DOI: 10.1006/jsre.2001.6250] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Surgical trauma is partly responsible for enhancing tumor growth through a variety of mechanisms that are still not fully elucidated. The use of perioperative immunostimulants may modulate these effects. This study examined the effect of administration of taurolidine after laparotomy or laparoscopy on the growth of solid tumor, the establishment of hepatic and lung metastases, and effects on natural killer (NK) and lymphokine-activated killer (LAK) cell function. METHODS B16 melanoma right flank tumors were established in mice (n = 180). These animals underwent anesthesia only (control) or laparotomy or laparoscopy (n = 60 per group) and were randomized to receive either saline or taurolidine (n = 30 per group) at specific time points. Survival was determined in each group, and in a further 90 mice tumor growth was followed over 10 days postoperatively. The experiment was repeated in 540 mice, which underwent one of the three procedures and were treated with either saline or taurolidine. NK and LAK cell cytotoxicity (NKCC, LAKCC) was determined at several time points postoperatively. In a further experiment, B16 melanoma tumor cells were delivered via tail vein injection (n = 180) and intrasplenic injection (n = 180). The effect of saline or taurolidine administration on survival after the establishment of metastases was determined, and again in a further 180 mice the establishment of metastatic deposits in the liver or lungs was determined after 8 days. RESULTS Survival appeared to be significantly decreased in both the solid-tumor model and the metastatic models undergoing laparotomy compared to laparoscopy and controls (P < 0.0001) and to a lesser extent in the laparoscopy group compared to controls (P < 0.001). Flank tumor growth and metastatic tumor formation were more significant in laparotomy groups compared to laparoscopy groups and controls, but also to a lesser extent in laparoscopy groups compared to controls (P </= 0.05). NKCC and LAKCC were significantly decreased in the same patterns (P < or = 0.03). However, treatment with taurolidine abolished these effects, restoring NKCC and LAKCC (P < or = 0.04) and laparoscopy groups (P < or = 0.001). CONCLUSION It appears that changes that occur after the trauma of laparotomy, and to a lesser extent, after laparoscopy, significantly enhance the growth of primary tumors as well as the development of metastases from circulating tumor cells and are associated with a suppression of host antitumor surveillance mechanisms. This not only affected tumor progression in the immediate postoperative period, but also ultimately affected survival. Taurolidine, a known immunostimulant, appears to abrogate the effects of surgical trauma on primary and metastatic tumor growth and also enhances survival. This may have significant value in the management of tumor-bearing patients undergoing resection.
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MESH Headings
- Animals
- Antineoplastic Agents/pharmacology
- Cell Division/drug effects
- Cytotoxicity, Immunologic/drug effects
- Female
- Killer Cells, Lymphokine-Activated/drug effects
- Killer Cells, Lymphokine-Activated/immunology
- Killer Cells, Natural/drug effects
- Killer Cells, Natural/immunology
- Laparoscopy
- Laparotomy
- Melanoma, Experimental/drug therapy
- Melanoma, Experimental/immunology
- Melanoma, Experimental/mortality
- Mice
- Mice, Inbred C57BL
- Neoplasm Metastasis/prevention & control
- Neoplastic Cells, Circulating
- Taurine/analogs & derivatives
- Taurine/pharmacology
- Thiadiazines/pharmacology
- Tumor Cells, Cultured
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Affiliation(s)
- M L Da Costa
- Department of Surgery, Royal College of Surgeons in Ireland, Dublin 9, Ireland
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22
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Fondrinier E, Lorimier G, Cellier P, Gamelin E. [Parietal tumor seeding after thoracoscopic surgery: apropos of a case]. CHIRURGIE; MEMOIRES DE L'ACADEMIE DE CHIRURGIE 1998; 123:612-5. [PMID: 9922604 DOI: 10.1016/s0001-4001(99)80013-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The authors report one case of port site recurrence 5 months after thoracoscopic resection of a pulmonary metastasis in a 68-year-old woman.
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23
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Da Costa ML, Redmond P, Bouchier-Hayes DJ. The effect of laparotomy and laparoscopy on the establishment of spontaneous tumor metastases. Surgery 1998. [PMID: 9736904 DOI: 10.1016/s0039-6060(98)70098-4] [Citation(s) in RCA: 88] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Surgical extirpation of solid tumors may be entirely possible, and the consequence of surgical excision is invariably the release of tumor cells into the systemic circulation. The aim of this study was to determine whether laparotomy affects the establishment of spontaneous pulmonary metastases after excision of the primary tumor in a murine flank tumor model and to determine possible underlying immune abnormalities. METHODS An initial experiment was carried out to compare the development of gross spontaneous pulmonary metastases in the presence of a primary flank tumor and after excision of the tumor in C57/BL6 female mice. Another group of mice had flank tumors excised and were simultaneously randomized to undergo anesthetic only (control), laparoscopy, or laparotomy, after which the subsequent development of pulmonary metastases was determined. Finally, a third experiment entailed determination of natural killer cell (NK) cytotoxicity and the effect of splenic macrophages on NK cytotoxicity at days 1,7, and 14 after tumor excision. RESULTS Excision of the primary tumor resulted in a significant increase in the number of pulmonary metastases in mice compared with mice that did not have tumors excised (P = .01). Both laparotomy and laparoscopy significantly increased the number of spontaneous pulmonary metastases after tumor excision compared with controls (P < or = .01), and there was also a significant difference between laparotomy and laparoscopy groups (P = .00). NK cytotoxicity was significantly suppressed at all time points after operation in the laparotomy group compared with both the laparoscopy group and the controls (P < or = .01). Suppression occurred after laparoscopy at 24 hours after the procedure compared with controls (P = .00); by day 7 this difference was not significant, but as day 14 there was again a significant suppression (P < or = .03). Splenic macrophages appeared to be a suppressor to natural killer cell cytotoxicity (NKCC) in the corresponding groups and at the corresponding time points. CONCLUSIONS The differential establishment of spontaneous metastases after tumor excision and laparotomy and, to a lesser extent, laparoscopy results in lowered host antitumor surveillance and may be mediated at least in part by the generation of splenic suppressor cells in the early postoperative period, causing a more marked and prolonged effect after laparotomy than after laparoscopy.
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Affiliation(s)
- M L Da Costa
- Royal College of Surgeons in Ireland, Department of Surgery, Dublin, Ireland
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McNamara DA, Harmey JH, Walsh TN, Redmond HP, Bouchier-Hayes DJ. Significance of angiogenesis in cancer therapy. Br J Surg 1998; 85:1044-55. [PMID: 9717994 DOI: 10.1046/j.1365-2168.1998.00816.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND For most solid tumours, surgery remains the most effective primary treatment. Despite apparently curative resection, significant numbers of patients develop secondary disease due to growth of undetected micrometastases. The ability of a tumour to metastasize is related to the degree of angiogenesis it induces. In addition, micrometastases rely on new vessel formation to provide the nutrients necessary for growth. A better understanding of how tumours acquire their blood supply may lead to more effective adjuvant therapies and improve survival following surgery. METHODS A systematic review of the literature on angiogenesis between 1971 and 1997 was performed using the Medline database to ascertain current thinking on angiogenesis and its relevance in oncological surgery. RESULTS Angiogenesis is a physiological process subject to autocrine and paracrine regulation which has the potential to become abnormal and play a part in a number of pathological states, including cancer. Increased angiogenic stimuli in the perioperative period, associated with concomitant reduction in tumour-derived antiangiogenic factors following resection of a primary tumour, result in a permissive environment which allows micrometastases to grow. CONCLUSION Recognition of the role of angiogenesis in metastatic tumour growth represents a significant development in our understanding of tumour biology. The development of antiangiogenic agents offers new promise in the treatment of malignancy. Such agents may prevent or control the development and growth of primary and metastatic tumours.
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Affiliation(s)
- D A McNamara
- Royal College of Surgeons in Ireland, Department of Surgery, Beaumont Hospital, Dublin
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van den Tol PM, van Rossen EE, van Eijck CH, Bonthuis F, Marquet RL, Jeekel H. Reduction of peritoneal trauma by using nonsurgical gauze leads to less implantation metastasis of spilled tumor cells. Ann Surg 1998; 227:242-8. [PMID: 9488523 PMCID: PMC1191242 DOI: 10.1097/00000658-199802000-00014] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVES To evaluate whether infliction of peritoneal trauma would promote tumor cell adherence to damaged peritoneal surfaces; to investigate whether peritoneal damage could promote tumor growth of extraperitoneal tumors; and to evaluate whether the amount of trauma correlated with the degree of tumor cell adherence and local and distant tumor growth. BACKGROUND DATA After potentially curative resection of colorectal carcinoma, the most common site for recurrence is locoregional. We previously demonstrated that surgical trauma induces a cascade of events leading to adhesion formation. The same mechanisms may be responsible for improved tumor cell adherence and growth facilitation in early local recurrence. METHODS A reproducible rat model was used in which peritoneal damage was inflicted by standardized rubbing of the peritoneum with surgical gauzes of different texture. In the first experiment, tumor cell adherence and growth at traumatized and nontraumatized peritoneal sites were assessed semiquantitatively 3 weeks after perioperative intra-abdominal injection of CC-531 tumor cells. In the second experiment, the effect of peritoneal trauma on ectopic tumor growth was investigated (CC-531 implanted under the renal capsule). In the final experiment, we evaluated how soon after peritoneal traumatization tumor cell adhesion and growth-promoting factors were active and whether they could be passively transferred to naïve nontraumatized abdominal cavities. RESULTS A significant correlation between the amount of peritoneal trauma and the degree of tumor take at damaged peritoneal surfaces was found (p < or = 0.018). Tumor take at remote peritoneal sites not directly traumatized was also significantly higher after severe trauma than after moderate trauma of the peritoneum (p < or = 0.005). In addition, a significant correlation between the degree of peritoneal trauma and the growth of ectopic tumors under the renal capsule was observed (p < or = 0.009). The final experiment demonstrated that within a few hours after infliction of peritoneal trauma, tumor growth-promoting effects could be passively transferred to naïve recipients. CONCLUSIONS Surgical trauma is an important factor in the promotion of local recurrence. The enhancing effect of trauma is not restricted to the inflicted site but rather has a generalized character. Avoidance of unnecessary surgical trauma by using gentle techniques and materials is therefore indicated.
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Affiliation(s)
- P M van den Tol
- Department of General Surgery, University Hospital-Dijkzigt, Rotterdam, The Netherlands
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Murthy MS, Reid SE, Yang XF, Scanlon EP. The potential role of integrin receptor subunits in the formation of local recurrence and distant metastasis by mouse breast cancer cells. J Surg Oncol 1996; 63:77-86. [PMID: 8888798 DOI: 10.1002/(sici)1096-9098(199610)63:2<77::aid-jso2>3.0.co;2-l] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND The mechanisms by which surgical injury fosters tumor growth are examined. METHODS TA3Ha mouse breast tumor line and its subline (TA3AD) differing in their metastatic abilities as tested by two models were used. In model a, TA3Ha/TA3AD tumors were grown in the mammary fat pads of mice and then surgically removed with a curative intent. In model b, TA3Ha/TA3AD cells were injected intravenously into mice subjected to liver or spleen wedge resection. Frequency of tumor formation at various sites was assessed. Expression of integrin, immunoglobulin, and proteoglycan cell adhesion receptors on TA3Ha and TA3AD cells was examined by flow cytometry. The roles of these receptors in metastasis were examined by blocking them by selected ligands and/or antibodies. RESULTS Frequencies of local recurrence and axillary metastasis after surgical resection, were 43% (32/74), and 37% (27/74) with TA3Ha tumors and 4% (1/29) at both sites with TA3AD tumors. Tumors at surgically injured spleen and the liver were seen in 75% (141/189) and 45% (107/240) of the mice with TA3Ha cells and in 8% (3/38) and 10% (4/42) of the mice with TA3AD cells. alpha 5 and CD44 receptors were expressed by TA3Ha cells but not by TA3AD cells. Other receptors examined were similarly expressed by both cell lines. Blocking of alpha 5 receptor by fibronectin reduced tumor implantation in a dose-dependent manner. CONCLUSIONS The data suggest a correlation among the ability to implant at surgically injured sites, to form local recurrence, and to express the fibronectin receptor subunit.
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Affiliation(s)
- M S Murthy
- Department of Surgery, Evanston Hospital, IL 60201, USA
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Reid SE, Scanlon EF, Kaufman MW, Murthy MS. Role of cytokines and growth factors in promoting the local recurrence of breast cancer. Br J Surg 1996; 83:313-20. [PMID: 8665181 DOI: 10.1002/bjs.1800830308] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The pathogenesis of local recurrence in breast cancer is not well understood. Breast-conserving surgery is particularly prone to local recurrence as it leaves behind breast tissue that may harbour occult cancer, and lends itself to enhanced intraoperative shedding of cancer cells due to narrower resection margins and transection of lymphatic channels. A review of clinical breast cancer studies as well as experimental research strongly suggests that these persisting cancerous cells are unlikely to develop into clinically evident disease if their environment remains unstimulated. However, an inordinately high local recurrence rate occurs at the surgical scar, and such recurrence must be triggered by the release of growth factors and cytokines into the healing wound. These factors can stimulate any available cancer cells which express the proper growth factor receptors. Perioperative strategies to neutralize this tumour cell-growth factor interaction should maximize local control.
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Affiliation(s)
- S E Reid
- Department of Surgery, Northwestern University Medical School, Chicago, Illinois, USA
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Abstract
BACKGROUND This study examined the association between cigarette smoking status and the development of lung metastases in a group of 835 women diagnosed with primary malignant unilateral breast cancer. METHOD Female patients with breast cancer diagnosed between 1982 and 1991 at Roswell Park Cancer Institute (RPCI) in Buffalo, New York, who provided information on their cigarette smoking history at the time of their diagnosis were included. The subsequent disease status of patients was monitored by the RPCI Tumor Registry. The Cox regression model was used to estimate the relationship between smoking status and the development of lung metastases, adjusting for the patient's age, stage of disease at diagnosis, and body weight. RESULTS Of those patients who developed lung metastases, 8.7% were nonsmokers, 14.1% were former smokers, and 14.3% were current smokers. Tests showed that nonsmokers had significantly fewer lung metastases than either of the two smoking groups (P < 0.01). The estimated relative rates of lung metastases developing adjusting for age, stage, and body weight in women who smoked less than 10,000, between 10,001 and 20,000, and more than 20,000 packs over their lifetimes compared with nonsmokers were 1.06 (95% CI, 0.51-2.20), 3.10 (95% CI, 1.5-6.3), and 3.73 (95% CI, 1.6-8.9) respectively. The Cox regression model showed that every 1000 packs of cigarettes consumed over a lifetime increased a woman's risk of developing lung metastases by about 3% to 7% (P < 0.001). CONCLUSION This study found a significant association between cigarette smoking history and risk of lung metastases developing in women diagnosed with primary invasive unilateral breast cancer. The risk of lung metastases developing increased as the number of cigarettes smoked in a lifetime increased.
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Affiliation(s)
- E F Scanlon
- Department of Surgery, Evanston Hospital, Illinois, USA
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