Skip to main content
Erschienen in: Journal of Cancer Research and Clinical Oncology 12/2007

01.12.2007 | Original Paper

The influence of different microenvironments on melanoma invasiveness and microcirculation patterns: an animal experiment study in the mouse model

verfasst von: Baocun Sun, Shiwu Zhang, Danfang Zhang, Yanjun Gu, Wenchao Zhang, Xiulan Zhao

Erschienen in: Journal of Cancer Research and Clinical Oncology | Ausgabe 12/2007

Einloggen, um Zugang zu erhalten

Abstract

Object

To investigate the influence of different microenvironments on tumor microcirculation patterns and invasiveness capability.

Methods

Melanoma B16 cells were injected into the abdominal cavity and skeletal muscle of C57 mice synchronously. CK-18 expression in melanoma was assessed to distinguish the malignant phenotype of tumors in the abdominal cavity from that in the skeletal muscle. HIF-1α, MMP-2 and MMP-9 expression and mRNA levels of MMP-2 and MMP-9 was detected to compare the mRNA levels of MMP-2 and MMP-9 from the two microenvironments. Cells positive for each immunohistochemical stain and the vessels representative of each type of microcirculation pattern were counted in two microenvironments.

Results

CK-18 and HIF-1α expression of melanoma were significantly higher in the skeletal muscle than in the abdominal cavity (< 0.05). Compared with the abdominal cavity, melanoma cells in the skeletal muscle overexpressed MMP-2 and MMP-9 (< 0.05). Real time-PCR results also showed that MMP-2 and MMP-9 mRNA levels of melanoma were higher in the skeletal muscle than in the abdominal cavity (< 0.05). VM channels and endothelium-dependent vessels were the major microcirculation pattern in the skeletal muscle and in the abdominal cavity, respectively.

Conclusion

Different microenvironments affect invasiveness and blood supply patterns of melanoma.
Literatur
Zurück zum Zitat Ben-Baruch A (2003) Host microenvironment in breast cancer development: inflammatory cells, cytokines and chemokines in breast cancer progression: reciprocal tumor-microenvironment interactions. Breast Cancer Res 5:31–36PubMedCrossRef Ben-Baruch A (2003) Host microenvironment in breast cancer development: inflammatory cells, cytokines and chemokines in breast cancer progression: reciprocal tumor-microenvironment interactions. Breast Cancer Res 5:31–36PubMedCrossRef
Zurück zum Zitat Biju MP, Akai Y, Shrimanker N, Haase VH (2005) Protection of HIF-1-deficient primary renal tubular epithelial cells from hypoxia-induced cell death is glucose dependent. Am J Physiol Renal Physiol 289:F1217–F1226PubMedCrossRef Biju MP, Akai Y, Shrimanker N, Haase VH (2005) Protection of HIF-1-deficient primary renal tubular epithelial cells from hypoxia-induced cell death is glucose dependent. Am J Physiol Renal Physiol 289:F1217–F1226PubMedCrossRef
Zurück zum Zitat Dai J, Keller J, Zhang J, Lu Y, Yao Z, Keller ET (2005) Bone morphogenetic protein-6 promotes osteoblastic prostate cancer bone metastases through a dual mechanism. Cancer Res 65:8274–8285PubMedCrossRef Dai J, Keller J, Zhang J, Lu Y, Yao Z, Keller ET (2005) Bone morphogenetic protein-6 promotes osteoblastic prostate cancer bone metastases through a dual mechanism. Cancer Res 65:8274–8285PubMedCrossRef
Zurück zum Zitat Dong D, Ko B, Baumeister P, Swenson S, Costa F, Markland F, Stiles C, Patterson JB, Bates SE, Lee AS (2005) Vascular targeting and antiangiogenesis agents induce drug resistance effector GRP78 within the tumor microenvironment. Cancer Res 65:5785–5791PubMedCrossRef Dong D, Ko B, Baumeister P, Swenson S, Costa F, Markland F, Stiles C, Patterson JB, Bates SE, Lee AS (2005) Vascular targeting and antiangiogenesis agents induce drug resistance effector GRP78 within the tumor microenvironment. Cancer Res 65:5785–5791PubMedCrossRef
Zurück zum Zitat Folberg R, Hendrix MJ, Maniotis AJ (2000) Vasculogenic mimicry and tumor angiogenesis. Am J Pathol 156:361–381PubMed Folberg R, Hendrix MJ, Maniotis AJ (2000) Vasculogenic mimicry and tumor angiogenesis. Am J Pathol 156:361–381PubMed
Zurück zum Zitat Gutt CN, Kim ZG, Schemmer P, Krahenbuhl L, Schmedt CG (2002) Impact of laparoscopic and conventional surgery on Kupffer cells, tumor-associated CD44 expression, and intrahepatic tumor spread. Arch Surg 137:1408–1412PubMedCrossRef Gutt CN, Kim ZG, Schemmer P, Krahenbuhl L, Schmedt CG (2002) Impact of laparoscopic and conventional surgery on Kupffer cells, tumor-associated CD44 expression, and intrahepatic tumor spread. Arch Surg 137:1408–1412PubMedCrossRef
Zurück zum Zitat Hess AR, Seftor EA, Seftor RE, Hendrix MJ (2003) Phosphoinositide 3-kinase regulates membrane Type 1-matrix metalloproteinase (MMP) and MMP-2 activity during melanoma cell vasculogenic mimicry. Cancer Res 63:4757–4762PubMed Hess AR, Seftor EA, Seftor RE, Hendrix MJ (2003) Phosphoinositide 3-kinase regulates membrane Type 1-matrix metalloproteinase (MMP) and MMP-2 activity during melanoma cell vasculogenic mimicry. Cancer Res 63:4757–4762PubMed
Zurück zum Zitat Hess AR, Postovit LM, Margaryan NV (2005) Focal adhesion kinase promotes the aggressive melanoma phenotype. Cancer Res 65:9851–9860PubMedCrossRef Hess AR, Postovit LM, Margaryan NV (2005) Focal adhesion kinase promotes the aggressive melanoma phenotype. Cancer Res 65:9851–9860PubMedCrossRef
Zurück zum Zitat Hendrix MJ, Seftor EA, Kirschmann DA, Quaranta V, Seftor RE (2003) Remodeling of the microenvironment by aggressive melanoma tumor cells. Ann N Y Acad Sci 995:151–161PubMedCrossRef Hendrix MJ, Seftor EA, Kirschmann DA, Quaranta V, Seftor RE (2003) Remodeling of the microenvironment by aggressive melanoma tumor cells. Ann N Y Acad Sci 995:151–161PubMedCrossRef
Zurück zum Zitat Ishida H, Hashimoto D, Nakada H, Takeuchi I, Hoshino T, Murata N, Idezuki Y, Hosono M (2002) Increased insufflation pressure enhances the development of liver metastasis in a mouse laparoscopy model: possible mechanisms. Surg Endosc 16:331–335PubMedCrossRef Ishida H, Hashimoto D, Nakada H, Takeuchi I, Hoshino T, Murata N, Idezuki Y, Hosono M (2002) Increased insufflation pressure enhances the development of liver metastasis in a mouse laparoscopy model: possible mechanisms. Surg Endosc 16:331–335PubMedCrossRef
Zurück zum Zitat Jacobi CA, Ordemann J, Zieren HU, Muller JM (1998) Effect of intra-abdominal pressure in laparoscopy on intraperitoneal tumor growth and development of trocar metastases. An animal experiment study in the rat model. Langenbecks Arch Chir Suppl Kongressbd 115:529–533PubMed Jacobi CA, Ordemann J, Zieren HU, Muller JM (1998) Effect of intra-abdominal pressure in laparoscopy on intraperitoneal tumor growth and development of trocar metastases. An animal experiment study in the rat model. Langenbecks Arch Chir Suppl Kongressbd 115:529–533PubMed
Zurück zum Zitat Jain RK (2001) Delivery of molecular medicine to solid tumors: lessons from in vivo imaging of gene expression and function. J Control Release 74:7–25PubMedCrossRef Jain RK (2001) Delivery of molecular medicine to solid tumors: lessons from in vivo imaging of gene expression and function. J Control Release 74:7–25PubMedCrossRef
Zurück zum Zitat Jiang ZQ, Zhu FC, Qu JY, Zheng X, You CL (2003) Relationship between expression of matrix metalloproteinase (MMP-9) and tumor angiogenesis, cancer cell proliferation, invasion, and metastasis in invasive carcinoma of cervix. Ai Zheng 22:178–184PubMed Jiang ZQ, Zhu FC, Qu JY, Zheng X, You CL (2003) Relationship between expression of matrix metalloproteinase (MMP-9) and tumor angiogenesis, cancer cell proliferation, invasion, and metastasis in invasive carcinoma of cervix. Ai Zheng 22:178–184PubMed
Zurück zum Zitat Kaur C, Sivakumar V, Ang LS, Sundaresan A (2006) Hypoxic damage to the periventricular white matter in neonatal brain: role of vascular endothelial growth factor, nitric oxide and excitotoxicity. J Neurochem 98:1200–1216PubMedCrossRef Kaur C, Sivakumar V, Ang LS, Sundaresan A (2006) Hypoxic damage to the periventricular white matter in neonatal brain: role of vascular endothelial growth factor, nitric oxide and excitotoxicity. J Neurochem 98:1200–1216PubMedCrossRef
Zurück zum Zitat Karlsen TV, Karkkainen MJ, Alitalo K, Wiig H (2006) Transcapillary fluid balance consequences of missing initial lymphatics studied in a mouse model of primary lymphoedema. J Physiol 574:583–596PubMedCrossRef Karlsen TV, Karkkainen MJ, Alitalo K, Wiig H (2006) Transcapillary fluid balance consequences of missing initial lymphatics studied in a mouse model of primary lymphoedema. J Physiol 574:583–596PubMedCrossRef
Zurück zum Zitat Kim SJ, Rabbani ZN, Dewhirst MW, Vujaskovic Z, Vollmer RT, Schreiber EG, Oosterwijk E, Kelley MJ (2005) Expression of HIF-1alpha, CA IX, VEGF, and MMP-9 in surgically resected non-small cell lung cancer. Lung Cancer 49:325–335PubMedCrossRef Kim SJ, Rabbani ZN, Dewhirst MW, Vujaskovic Z, Vollmer RT, Schreiber EG, Oosterwijk E, Kelley MJ (2005) Expression of HIF-1alpha, CA IX, VEGF, and MMP-9 in surgically resected non-small cell lung cancer. Lung Cancer 49:325–335PubMedCrossRef
Zurück zum Zitat Krishnamachary B, Berg-Dixon S, Kelly B, Kelly B, Agani F, Feldser D, Ferreira G, Iyer N, LaRusch J, Pak B, Taghavi P, Semenza GL (2003) Regulation of colon carcinoma cell invasion by hypoxia-inducible factor 1. Cancer Res 63:1138–1143PubMed Krishnamachary B, Berg-Dixon S, Kelly B, Kelly B, Agani F, Feldser D, Ferreira G, Iyer N, LaRusch J, Pak B, Taghavi P, Semenza GL (2003) Regulation of colon carcinoma cell invasion by hypoxia-inducible factor 1. Cancer Res 63:1138–1143PubMed
Zurück zum Zitat Lee JW, Bae SH, Jeong JW, Kim SH, Kim KW (2004) Hypoxia-inducible factor (HIF-1)alpha: its protein stability and biological functions. Exp Mol Med 36:1–12PubMedCrossRef Lee JW, Bae SH, Jeong JW, Kim SH, Kim KW (2004) Hypoxia-inducible factor (HIF-1)alpha: its protein stability and biological functions. Exp Mol Med 36:1–12PubMedCrossRef
Zurück zum Zitat Leo C, Giaccia AJ, Denko NC (2004) The hypoxic tumor microenvironment and gene expression. Semin Radiat Oncol 14:207–214PubMedCrossRef Leo C, Giaccia AJ, Denko NC (2004) The hypoxic tumor microenvironment and gene expression. Semin Radiat Oncol 14:207–214PubMedCrossRef
Zurück zum Zitat Maniotis AJ, Folberg R, Hess A, Seftor EA, Gardner LM, Pe’er J, Trent JM, Meltzer PS, Hendrix MJ (1999) Vascular channel formation by human melanoma cells in vivo and in vitro: vasculogenic mimicry. Am J Pathol 155:739–752PubMed Maniotis AJ, Folberg R, Hess A, Seftor EA, Gardner LM, Pe’er J, Trent JM, Meltzer PS, Hendrix MJ (1999) Vascular channel formation by human melanoma cells in vivo and in vitro: vasculogenic mimicry. Am J Pathol 155:739–752PubMed
Zurück zum Zitat Maxwell PH, Dachs GU, Gleadle JM, Nicholls LG, Harris AL, Stratford IJ, Hankinson O, Pugh CW, Ratcliffe PJ (1997) Hypoxia-inducible factor-1 modulates gene expression in solid tumors and influences both angiogenesis and tumor growth. Proc Natl Acad Sci USA 94:8104–8109PubMedCrossRef Maxwell PH, Dachs GU, Gleadle JM, Nicholls LG, Harris AL, Stratford IJ, Hankinson O, Pugh CW, Ratcliffe PJ (1997) Hypoxia-inducible factor-1 modulates gene expression in solid tumors and influences both angiogenesis and tumor growth. Proc Natl Acad Sci USA 94:8104–8109PubMedCrossRef
Zurück zum Zitat Milkiewicz M, Haas TL (2005) Effect of mechanical stretch on HIF-1{alpha} and MMP-2 expression in capillaries isolated from overloaded skeletal muscles: laser capture microdissection study. Am J Physiol Heart Circ Physiol 289:H1315–H1320PubMedCrossRef Milkiewicz M, Haas TL (2005) Effect of mechanical stretch on HIF-1{alpha} and MMP-2 expression in capillaries isolated from overloaded skeletal muscles: laser capture microdissection study. Am J Physiol Heart Circ Physiol 289:H1315–H1320PubMedCrossRef
Zurück zum Zitat Milosevic MF, Fyles AW, Wong R, Pintilie M, Kavanagh MC, Levin W, Manchul LA, Keane TJ, Hill RP (1998) Interstitial fluid pressure in cervical carcinoma: within tumor heterogeneity, and relation to oxygen tension. Cancer 82:2418–2426PubMedCrossRef Milosevic MF, Fyles AW, Wong R, Pintilie M, Kavanagh MC, Levin W, Manchul LA, Keane TJ, Hill RP (1998) Interstitial fluid pressure in cervical carcinoma: within tumor heterogeneity, and relation to oxygen tension. Cancer 82:2418–2426PubMedCrossRef
Zurück zum Zitat Miyoshi A, Kitajima Y, Ide T, Ohtaka K, Nagasawa H, Uto Y, Hori H, Miyazaki K (2006) Hypoxia accelerates cancer invasion of hepatoma cells by upregulating MMP expression in an HIF-1alpha-independent manner. Int J Oncol 29:1533–1539PubMed Miyoshi A, Kitajima Y, Ide T, Ohtaka K, Nagasawa H, Uto Y, Hori H, Miyazaki K (2006) Hypoxia accelerates cancer invasion of hepatoma cells by upregulating MMP expression in an HIF-1alpha-independent manner. Int J Oncol 29:1533–1539PubMed
Zurück zum Zitat Munoz-Najar UM, Neurath KM, Vumbaca F, Claffey KP (2006) Hypoxia stimulates breast carcinoma cell invasion through MT1-MMP and MMP-2 activation. Oncogene 25:2379–2392PubMedCrossRef Munoz-Najar UM, Neurath KM, Vumbaca F, Claffey KP (2006) Hypoxia stimulates breast carcinoma cell invasion through MT1-MMP and MMP-2 activation. Oncogene 25:2379–2392PubMedCrossRef
Zurück zum Zitat Nguyen QD, De Wever O, Bruyneel E, Hendrix A, Xie WZ, Lombet A, Leibl M, Mareel M, Gieseler F, Bracke M, Gespach C (2005) Commutators of PAR-1 signaling in cancer cell invasion reveal an essential role of the Rho-Rho kinase axis and tumor microenvironment. Oncogene 24:8240–8251PubMedCrossRef Nguyen QD, De Wever O, Bruyneel E, Hendrix A, Xie WZ, Lombet A, Leibl M, Mareel M, Gieseler F, Bracke M, Gespach C (2005) Commutators of PAR-1 signaling in cancer cell invasion reveal an essential role of the Rho-Rho kinase axis and tumor microenvironment. Oncogene 24:8240–8251PubMedCrossRef
Zurück zum Zitat Pietras K, Ostman A, Sjoquist M, Buchdunger E, Reed RK, Heldin CH, Rubin K (2001) Inhibition of platelet-derived growth factor receptors reduces interstitial hypertension and increases transcapillary transport in tumors. Cancer Res 61:2929–2934PubMed Pietras K, Ostman A, Sjoquist M, Buchdunger E, Reed RK, Heldin CH, Rubin K (2001) Inhibition of platelet-derived growth factor receptors reduces interstitial hypertension and increases transcapillary transport in tumors. Cancer Res 61:2929–2934PubMed
Zurück zum Zitat Rofstad EK, Tunheim SH, Mathiesen B, Graff BA, Halsor EF, Nilsen K, Galappathi K (2002) Pulmonary and lymph node metastasis is associated with primary tumor interstitial fluid pressure in human melanoma xenografts. Cancer Res 62:661–664PubMed Rofstad EK, Tunheim SH, Mathiesen B, Graff BA, Halsor EF, Nilsen K, Galappathi K (2002) Pulmonary and lymph node metastasis is associated with primary tumor interstitial fluid pressure in human melanoma xenografts. Cancer Res 62:661–664PubMed
Zurück zum Zitat Salnikov AV, Iversen VV, Koisti M, Sundberg C, Johansson L, Stuhr LB, Sjoquist M, Ahlstrom H, Reed RK, Rubin K (2003) Lowering of tumor interstitial fluid pressure specifically augments efficacy of chemotherapy. FASEB J 17:1756–1758PubMed Salnikov AV, Iversen VV, Koisti M, Sundberg C, Johansson L, Stuhr LB, Sjoquist M, Ahlstrom H, Reed RK, Rubin K (2003) Lowering of tumor interstitial fluid pressure specifically augments efficacy of chemotherapy. FASEB J 17:1756–1758PubMed
Zurück zum Zitat Seftor RE, Seftor EA, Koshikawa N, Meltzer PS, Gardner LM, Bilban M, Stetler-Stevenson WG, Quaranta V, Hendrix MJ (2001) Cooperative interactions of laminin 5 gamma2 chain, matrix metalloproteinase-2, and membrane type-1-matrix/metalloproteinase are required for mimicry of embryonic vasculogenesis by aggressive melanoma. Cancer Res 61:6322–6327PubMed Seftor RE, Seftor EA, Koshikawa N, Meltzer PS, Gardner LM, Bilban M, Stetler-Stevenson WG, Quaranta V, Hendrix MJ (2001) Cooperative interactions of laminin 5 gamma2 chain, matrix metalloproteinase-2, and membrane type-1-matrix/metalloproteinase are required for mimicry of embryonic vasculogenesis by aggressive melanoma. Cancer Res 61:6322–6327PubMed
Zurück zum Zitat Seftor RE, Seftor EA, Kirschmann DA, Hendrix MJ (2002) Targeting the tumor microenvironment with chemically modified tetracyclines: inhibition of laminin 5 gamma2 chain promigratory fragments and vasculogenic mimicry. Mol Cancer Ther 1:1173–1179PubMed Seftor RE, Seftor EA, Kirschmann DA, Hendrix MJ (2002) Targeting the tumor microenvironment with chemically modified tetracyclines: inhibition of laminin 5 gamma2 chain promigratory fragments and vasculogenic mimicry. Mol Cancer Ther 1:1173–1179PubMed
Zurück zum Zitat Semenza GL (2000) Expression of hypoxia-inducible factor 1: mechanisms and consequences. Biochem Pharmacol 59:47–53PubMedCrossRef Semenza GL (2000) Expression of hypoxia-inducible factor 1: mechanisms and consequences. Biochem Pharmacol 59:47–53PubMedCrossRef
Zurück zum Zitat Shams I, Avivi A, Nevo E (2004) Hypoxic stress tolerance of the blind subterranean mole rat: expression of erythropoietin and hypoxia-inducible factor 1 alpha. Proc Natl Acad Sci USA 101:9698–9703PubMedCrossRef Shams I, Avivi A, Nevo E (2004) Hypoxic stress tolerance of the blind subterranean mole rat: expression of erythropoietin and hypoxia-inducible factor 1 alpha. Proc Natl Acad Sci USA 101:9698–9703PubMedCrossRef
Zurück zum Zitat Zhang S, Zhang D, Sun B (2007) Vasculogenic mimicry: current status and future prospects. Cancer Lett 14 (Epub ahead of print) Zhang S, Zhang D, Sun B (2007) Vasculogenic mimicry: current status and future prospects. Cancer Lett 14 (Epub ahead of print)
Zurück zum Zitat Sun B, Zhang S, Zhang D, Du J, Guo H, Zhao X, Zhang W, Hao X (2006) Vasculogenic mimicry is associated with high tumor grade, invasion and metastasis, and short survival in patients with hepatocellular carcinoma. Oncol Rep 16:693–698PubMed Sun B, Zhang S, Zhang D, Du J, Guo H, Zhao X, Zhang W, Hao X (2006) Vasculogenic mimicry is associated with high tumor grade, invasion and metastasis, and short survival in patients with hepatocellular carcinoma. Oncol Rep 16:693–698PubMed
Zurück zum Zitat Sun B, Zhang D, Zhang S, Zhang W, Guo H, Zhao X (2007) Hypoxia influences vasculogenic mimicry channel formation and tumor invasion-related protein expression in melanoma. Cancer Lett 249:188–197PubMedCrossRef Sun B, Zhang D, Zhang S, Zhang W, Guo H, Zhao X (2007) Hypoxia influences vasculogenic mimicry channel formation and tumor invasion-related protein expression in melanoma. Cancer Lett 249:188–197PubMedCrossRef
Zurück zum Zitat Van de Broek I, Leleu X, Schots R, Facon T, Vanderkerken K, Van Camp B, Van Riet I (2006) Clinical significance of chemokine receptor (CCR1, CCR2 and CXCR4) expression in human myeloma cells: the association with disease activity and survival. Haematologica 91:200–206PubMed Van de Broek I, Leleu X, Schots R, Facon T, Vanderkerken K, Van Camp B, Van Riet I (2006) Clinical significance of chemokine receptor (CCR1, CCR2 and CXCR4) expression in human myeloma cells: the association with disease activity and survival. Haematologica 91:200–206PubMed
Zurück zum Zitat Vordermark D, Brown JM (2003) Evaluation of hypoxia-inducible factor-1alpha (HIF-1alpha) as an intrinsic marker of tumor hypoxia in U87 MG human glioblastoma: in vitro and xenograft studies. Int J Radiat Oncol Biol Phys 56:1184–1193PubMedCrossRef Vordermark D, Brown JM (2003) Evaluation of hypoxia-inducible factor-1alpha (HIF-1alpha) as an intrinsic marker of tumor hypoxia in U87 MG human glioblastoma: in vitro and xenograft studies. Int J Radiat Oncol Biol Phys 56:1184–1193PubMedCrossRef
Zurück zum Zitat Yagmurdur MC, Basaran O, Ozdemir H, Gur G, Tran M, Karakayali H, Haberal M (2004) The impact of transient elevation of intra-abdominal pressure on liver regeneration in the rat. J Invest Surg 17:315–322PubMedCrossRef Yagmurdur MC, Basaran O, Ozdemir H, Gur G, Tran M, Karakayali H, Haberal M (2004) The impact of transient elevation of intra-abdominal pressure on liver regeneration in the rat. J Invest Surg 17:315–322PubMedCrossRef
Zurück zum Zitat Zhang Y, Wu XH, Cao GH, Li S (2004) Relationship between expression of matrix metalloproteinase-9 (MMP-9) and angiogenesis in renal cell carcinoma. Ai Zheng 23:326–329PubMed Zhang Y, Wu XH, Cao GH, Li S (2004) Relationship between expression of matrix metalloproteinase-9 (MMP-9) and angiogenesis in renal cell carcinoma. Ai Zheng 23:326–329PubMed
Metadaten
Titel
The influence of different microenvironments on melanoma invasiveness and microcirculation patterns: an animal experiment study in the mouse model
verfasst von
Baocun Sun
Shiwu Zhang
Danfang Zhang
Yanjun Gu
Wenchao Zhang
Xiulan Zhao
Publikationsdatum
01.12.2007
Verlag
Springer-Verlag
Erschienen in
Journal of Cancer Research and Clinical Oncology / Ausgabe 12/2007
Print ISSN: 0171-5216
Elektronische ISSN: 1432-1335
DOI
https://doi.org/10.1007/s00432-007-0245-6

Weitere Artikel der Ausgabe 12/2007

Journal of Cancer Research and Clinical Oncology 12/2007 Zur Ausgabe

Nodal-negativ nach neoadjuvanter Chemo: Axilladissektion verzichtbar?

03.05.2024 Mammakarzinom Nachrichten

Wenn bei Mammakarzinomen durch eine neoadjuvante Chemotherapie ein Downstaging von nodal-positiv zu nodal-negativ gelingt, scheint es auch ohne Axilladissektion nur selten zu axillären Rezidiven zu kommen.

Wo hapert es noch bei der Umsetzung der POMGAT-Leitlinie?

03.05.2024 DCK 2024 Kongressbericht

Seit November 2023 gibt es evidenzbasierte Empfehlungen zum perioperativen Management bei gastrointestinalen Tumoren (POMGAT) auf S3-Niveau. Vieles wird schon entsprechend der Empfehlungen durchgeführt. Wo es im Alltag noch hapert, zeigt eine Umfrage in einem Klinikverbund.

Bestrahlung nach Prostatektomie: mehr Schaden als Nutzen?

02.05.2024 Prostatakarzinom Nachrichten

Eine adjuvante Radiotherapie nach radikaler Prostata-Op. bringt den Betroffenen wahrscheinlich keinen Vorteil. Im Gegenteil: Durch die Bestrahlung steigt offenbar das Risiko für Harn- und Stuhlinkontinenz.

Endlich: Zi zeigt, mit welchen PVS Praxen zufrieden sind

IT für Ärzte Nachrichten

Darauf haben viele Praxen gewartet: Das Zi hat eine Liste von Praxisverwaltungssystemen veröffentlicht, die von Nutzern positiv bewertet werden. Eine gute Grundlage für wechselwillige Ärzte und Psychotherapeuten.

Update Onkologie

Bestellen Sie unseren Fach-Newsletter und bleiben Sie gut informiert.