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Kreinest M, Reisig G, Ströbel P, Fickert S, Brade J, Wennemuth G, Lipp P, Schwarz ML. Analysis of Gene Expression and Ultrastructure of Stifle Menisci from Juvenile and Adult Pigs. Comp Med 2016; 66:30-40. [PMID: 26884408 PMCID: PMC4752034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 01/19/2015] [Accepted: 08/05/2015] [Indexed: 06/05/2023]
Abstract
The origin of the age-associated degenerative processes in meniscal tissue is poorly understood and may be related to an imbalance of anabolic and catabolic metabolism. The aim of the current study was to compare medial menisci isolated from juvenile pigs and degenerated medial menisci from adult pigs in terms of gene expression profile and ultrastructure. Medial menisci were isolated from the knee joints of juvenile and adult pigs (n = 8 for each group). Degeneration was determined histologically according to a scoring system. In addition, the gene expression profiles of 14 genes encoding extracellular matrix proteins, catabolic matrix metalloproteinases and mediators of inflammation were analyzed. Changes in the ultrastructure of the collagen network of the meniscal tissue were analyzed by using transmission electron microscopy. The histologic analysis of menisci showed significantly higher grade of degeneration in tissue isolated from adult porcine knee joints compared with menisci isolated from juvenile knee joints. In particular, destruction of the collagen network was greater in adult menisci than in juvenile menisci. Degenerated menisci showed significantly decreased gene expression of COL1A1 and increased expression of MMP2, MMP13, and IL8. The menisci from adult porcine knee joints can serve as a model for meniscal degeneration. Degenerative changes were manifested as differences in histopathology, gene expression and ultrastructure of collagen network.
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Affiliation(s)
- Michael Kreinest
- Department of Experimental Orthopaedics, Trauma Surgery and Orthopaedic Surgery, BG Trauma Centre Ludwigshafen, Ludwigshafen, Germany.
| | - Gregor Reisig
- Department of Experimental Orthopaedics, BG Trauma Centre Ludwigshafen, Ludwigshafen, Germany
| | - Philipp Ströbel
- Department of Pathology, University Medical Centre Göttingen, Göttingen, Germany
| | - Stefan Fickert
- Department of Experimental Orthopaedics, BG Trauma Centre Ludwigshafen, Ludwigshafen, Germany
| | - Joachim Brade
- Department of Medical Statistics and Biometry, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | | | - Peter Lipp
- Department of Molecular Cell Biology, University Medical Centre Homburg, Saarland University, Homburg-Saar, Germany
| | - Markus L Schwarz
- Department of Experimental Orthopaedics, BG Trauma Centre Ludwigshafen, Ludwigshafen, Germany
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Rocchi L, Caraffi S, Perris R, Mangieri D. The angiogenic asset of soft tissue sarcomas: a new tool to discover new therapeutic targets. Biosci Rep 2014; 34:e00147. [PMID: 25236925 PMCID: PMC4219423 DOI: 10.1042/bsr20140075] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 07/04/2014] [Accepted: 07/14/2014] [Indexed: 12/18/2022] Open
Abstract
STS (soft tissue sarcomas) are rare malignant tumours deriving from cells of mesenchymal origin and represent only 1% of all malignant neoplasms. It has been extensively demonstrated that angiogenesis has an important role in cancer malignancy. Particularly, a lot of studies demonstrate the importance of angiogenesis in the development of carcinomas, whereas little is known about the role of angiogenesis in sarcomas and especially in STS. This review aims at summarizing the new discoveries about the nature and the importance of angiogenesis in STS and the new possible therapeutic strategies involved. Only a few studies concerning STS focus on tumour neovascularization and proangiogenic factors and look for a correlation with the patients prognosis/survival. These studies demonstrate that intratumoural MVD (microvessels density) may not accurately represent the angiogenic capacity of STS. Nevertheless, this does not exclude the possibility that angiogenesis could be important in STS. The importance of neoangiogenesis in soft tissue tumours is confirmed by the arising number of publications comparing angiogenesis mediators with clinical features of patients with STS. The efficacy of anti-angiogenic therapies in other types of cancer is well documented. The understanding of the involvement of the angiogenic process in STS, together with the necessity to improve the therapy for this often mortal condition, prompted the exploration of anti-tumour compounds targeting this pathway. In conclusion, this review emphasizes the importance to better understand the mechanisms of angiogenesis in STS in order to subsequently design-specific target therapies for this group of poorly responding tumours.
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Key Words
- angiogenesis factors
- angiogenesis
- soft tissue sarcomas
- target therapy
- csf, colony-stimulating factor
- ec, endothelial cell
- fgf-2, fibroblast growth factor-2
- mfh, malignant fibrous histiocytoma
- mmp, matrix metalloproteinase
- mtor, mammalian target of rapamycin
- mvd, microvessels density
- pdgfrβ, platelet-derived growth factor beta
- plgf, placental growth factor
- sts, soft tissue sarcomas
- tki, tyrosine kinase inhibitor
- timp, tissue inhibitors of metalloproteinases
- upa, urokinase-type plasminogen activator
- vegf, vascular endothelial growth factor
- vegfr, vegf receptor
- vwf, von-willebrand factor
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Affiliation(s)
- Laura Rocchi
- *Unità Operativa di Anatomia e Istologia Patologica, Azienda Ospedaliero-Universitaria di Parma, Via Gramsci, 14, 43100-Parma, Italy
| | - Stefano Caraffi
- *Unità Operativa di Anatomia e Istologia Patologica, Azienda Ospedaliero-Universitaria di Parma, Via Gramsci, 14, 43100-Parma, Italy
| | - Roberto Perris
- †COMT–Centro di Oncologia Medica e Traslazionale, Università di Parma, Parco Area delle Scienze 11/A 43100-Parma, Italy
| | - Domenica Mangieri
- *Unità Operativa di Anatomia e Istologia Patologica, Azienda Ospedaliero-Universitaria di Parma, Via Gramsci, 14, 43100-Parma, Italy
- †COMT–Centro di Oncologia Medica e Traslazionale, Università di Parma, Parco Area delle Scienze 11/A 43100-Parma, Italy
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Abstract
COPD (chronic obstructive pulmonary disease) is a major incurable global health burden and will become the third largest cause of death in the world by 2020. It is currently believed that an exaggerated inflammatory response to inhaled irritants, in particular cigarette smoke, causes progressive airflow limitation. This inflammation, where macrophages, neutrophils and T-cells are prominent, leads to oxidative stress, emphysema, small airways fibrosis and mucus hypersecretion. The mechanisms and mediators that drive the induction and progression of chronic inflammation, emphysema and altered lung function are poorly understood. Current treatments have limited efficacy in inhibiting chronic inflammation, do not reverse the pathology of disease and fail to modify the factors that initiate and drive the long-term progression of disease. Therefore there is a clear need for new therapies that can prevent the induction and progression of COPD. Animal modelling systems that accurately reflect disease pathophysiology continue to be essential to the development of new therapies. The present review highlights some of the mouse models used to define the cellular, molecular and pathological consequences of cigarette smoke exposure and whether they can be used to predict the efficacy of new therapeutics for COPD.
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Key Words
- acute exacerbations of chronic obstructive pulmonary disease (aecopd)
- chronic obstructive pulmonary disease (copd)
- emphysema
- inflammation
- skeletal muscle wasting
- smoking
- aecopd, acute exacerbations of copd
- bal, bronchoalveolar lavage
- balf, bal fluid
- copd, chronic obstructive pulmonary disease
- gm-csf, granulocyte/macrophage colony-stimulating factor
- gold, global initiative on chronic obstructive lung disease
- gpx, glutathione peroxidase
- hdac, histone deacetylation
- il, interleukin
- ltb4, leukotriene b4
- mapk, mitogen-activated protein kinase
- mcp-1, monocyte chemotactic protein-1
- mmp, matrix metalloproteinase
- ne, neutrophil elastase
- nf-κb, nuclear factor κb
- nrf2, nuclear erythroid-related factor 2
- o2•−, superoxide radical
- onoo−, peroxynitrite
- pde, phosphodiesterase
- pi3k, phosphoinositide 3-kinase
- ros, reactive oxygen species
- rv, rhinovirus
- slpi, secretory leucocyte protease inhibitor
- sod, superoxide dismutase
- tgf-β, transforming growth factor-β
- timp, tissue inhibitor of metalloproteinases
- tnf-α, tumour necrosis factor-α
- v/q, ventilation/perfusion
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Affiliation(s)
- Ross Vlahos
- *Lung Health Research Centre, Department of Pharmacology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Steven Bozinovski
- *Lung Health Research Centre, Department of Pharmacology, University of Melbourne, Parkville, VIC 3010, Australia
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Peng X. Transgenic rabbit models for studying human cardiovascular diseases. Comp Med 2012; 62:472-479. [PMID: 23561880 PMCID: PMC3527751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 06/04/2012] [Accepted: 06/11/2012] [Indexed: 06/02/2023]
Abstract
Cardiovascular diseases involve the heart or blood vessels and remain a leading cause of morbidity and mortality in developed countries. A variety of animal models have been used to study cardiovascular diseases and have contributed to our understanding of their pathophysiology and treatment. However, mutations or abnormal expression of specific genes play important roles in the pathophysiology of some heart diseases, for which a closely similar animal model often is not naturally available. With the advent of techniques for specific genomic modification, several transgenic and knockout mouse models have been developed for cardiovascular conditions that result from spontaneous mutations. However, mouse and human heart show marked electrophysiologic differences. In addition, cardiac studies in mouse models are extremely difficult because of their small heart size and fast heart rate. Therefore, larger genetically engineered animal models are needed to overcome the limitations of the mouse models. This review summarizes the transgenic rabbit models that have been developed to study cardiovascular diseases.
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Affiliation(s)
- Xuwen Peng
- Department of Comparative Medicine, College of Medicine, The Pennsylvania State University, Hershey, PA, USA.
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Abstract
The heart has complex mechanisms that facilitate the maintenance of an oxygen supply-demand balance necessary for its contractile function in response to physiological fluctuations in workload as well as in response to chronic stresses such as hypoxia, ischemia, and overload. Redox-sensitive signaling pathways are centrally involved in many of these homeostatic and stress-response mechanisms. Here, we review the main redox-regulated pathways that are involved in cardiac myocyte excitation-contraction coupling, differentiation, hypertrophy, and stress responses. We discuss specific sources of endogenously generated reactive oxygen species (e.g., mitochondria and NADPH oxidases of the Nox family), the particular pathways and processes that they affect, the role of modulators such as thioredoxin, and the specific molecular mechanisms that are involved-where this knowledge is available. A better understanding of this complex regulatory system may allow the development of more specific therapeutic strategies for heart diseases.
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Key Words
- aif, apoptosis-inducing factor
- arc, apoptosis repressor with caspase recruitment domain
- camkii, calmodulin kinase ii
- ctgf, connective tissue growth factor
- eb, embryoid body
- ecc, excitation–contraction coupling
- er, endoplasmic reticulum
- es, embryonic stem
- etc, electron transport chain
- g6pdh, glucose-6-phosphate dehydrogenase
- gpcr, g-protein-coupled receptor
- hdac, histone deacetylase
- hif, hypoxia-inducible factor
- mao-a, monoamine oxidase-a
- mi, myocardial infarction
- mmp, matrix metalloproteinase
- mptp, mitochondrial permeability transition pore
- mtdna, mitochondrial dna
- ncx, na/ca exchanger
- nos, nitric oxide synthase
- phd, prolyl hydroxylase dioxygenase
- pka, protein kinase a
- pkc, protein kinase c
- pkg, protein kinase g
- ros, reactive oxygen species
- ryr, ryanodine receptor
- serca, sarcoplasmic reticulum calcium atpase
- sr, sarcoplasmic reticulum
- trx1, thioredoxin1
- tnfα, tumor necrosis factor-α
- vegf, vascular endothelial growth factor
- cardiac myocyte
- reactive oxygen species
- redox signaling
- hypertrophy
- heart failure
- nadph oxidase
- mitochondria
- free radicals
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Elsharkawy AM, Oakley F, Lin F, Packham G, Mann DA, Mann J. The NF-kappaB p50:p50:HDAC-1 repressor complex orchestrates transcriptional inhibition of multiple pro-inflammatory genes. J Hepatol 2010; 53:519-27. [PMID: 20579762 PMCID: PMC3098379 DOI: 10.1016/j.jhep.2010.03.025] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Revised: 02/09/2010] [Accepted: 03/21/2010] [Indexed: 12/17/2022]
Abstract
BACKGROUND & AIMS The pro-inflammatory functions of NF-kappaB must be tightly regulated to prevent inappropriate tissue damage and remodelling caused by activated inflammatory and wound-healing cells. The p50 subunit of NF-kappaB is emerging as an important repressor of immune and inflammatory responses, but by mechanisms that are poorly defined. This study aims to delineate p50 target genes in activated hepatic stellate cells and to outline mechanisms utilised in their repression. METHODS Hepatic stellate cells were isolated from nfkb1(p50)-deficient or Wt mice and gene expression compared using microarray. Target genes were verified by qRT-PCR and p50-mediated HDAC-1 recruitment to the target genes demonstrated using chromatin immunoprecipitation. RESULTS We identify p50 as transcriptional repressor of multiple pro-inflammatory genes including Ccl2, Cxcl10, Gm-csf, and Mmp-13. These genes are over-expressed in nfkb1(p50)-deficient mice suffering from chronic hepatitis and in fibrogenic/inflammatory hepatic stellate cells isolated from nfkb1(-/-) liver. We identify Mmp-13 as a bona-fide target gene for p50 and demonstrate that p50 is required for recruitment of the transcriptional repressor histone deacetylase (HDAC)-1 to kappaB sites in the Mmp-13 promoter. Chromatin immunoprecipitations identified binding of HDAC-1 to specific regulatory regions of the Ccl2, Cxcl10, Gm-csf genes that contain predicted kappaB binding motifs. Recruitment of HDAC-1 to these genes was not observed in nfkb1(-/-) cells suggesting a requirement for p50 in a manner similar to that described for Mmp-13. CONCLUSIONS Recruitment of HDAC-1 to inflammatory genes provides a widespread mechanism to explain the immunosuppressive properties of p50.
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Affiliation(s)
- Ahmed M. Elsharkawy
- Liver Group, Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne, UK
| | - Fiona Oakley
- Liver Group, Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne, UK
| | - Feng Lin
- Cancer Research UK Centre, Cancer Sciences Division, University of Southampton School of Medicine, Southampton General Hospital, Southampton, UK
| | - Graham Packham
- Cancer Research UK Centre, Cancer Sciences Division, University of Southampton School of Medicine, Southampton General Hospital, Southampton, UK
| | - Derek A. Mann
- Liver Group, Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne, UK
| | - Jelena Mann
- Liver Group, Institute of Cellular Medicine, Newcastle University, Newcastle Upon Tyne, UK
- Corresponding author. Address: Liver Group, Institute of Cellular Medicine, Medical School, Framlington Place, Newcastle University, Newcastle Upon Tyne NE2 4HH, UK. Tel.: +44 191 222 5548; fax: +44 191 222 5455.
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Benton RL, Maddie MA, Dincman TA, Hagg T, Whittemore SR. Transcriptional activation of endothelial cells by TGFβ coincides with acute microvascular plasticity following focal spinal cord ischaemia/reperfusion injury. ASN Neuro 2009; 1:e00015. [PMID: 19663807 PMCID: PMC2810814 DOI: 10.1042/an20090008] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Revised: 08/07/2009] [Accepted: 08/10/2009] [Indexed: 11/17/2022] Open
Abstract
Microvascular dysfunction, loss of vascular support, ischaemia and sub-acute vascular instability in surviving blood vessels contribute to secondary injury following SCI (spinal cord injury). Neither the precise temporal profile of the cellular dynamics of spinal microvasculature nor the potential molecular effectors regulating this plasticity are well understood. TGFβ (transforming growth factor β) isoforms have been shown to be rapidly increased in response to SCI and CNS (central nervous system) ischaemia, but no data exist regarding their contribution to microvascular dysfunction following SCI. To examine these issues, in the present study we used a model of focal spinal cord ischaemia/reperfusion SCI to examine the cellular response(s) of affected microvessels from 30 min to 14 days post-ischaemia. Spinal endothelial cells were isolated from affected tissue and subjected to focused microarray analysis of TGFβ-responsive/related mRNAs 6 and 24 h post-SCI. Immunohistochemical analyses of histopathology show neuronal disruption/loss and astroglial regression from spinal microvessels by 3 h post-ischaemia, with complete dissolution of functional endfeet (loss of aquaporin-4) by 12 h post-ischaemia. Coincident with this microvascular plasticity, results from microarray analyses show 9 out of 22 TGFβ-responsive mRNAs significantly up-regulated by 6 h post-ischaemia. Of these, serpine 1/PAI-1 (plasminogen-activator inhibitor 1) demonstrated the greatest increase (>40-fold). Furthermore, uPA (urokinase-type plasminogen activator), another member of the PAS (plasminogen activator system), was also significantly increased (>7.5-fold). These results, along with other select up-regulated mRNAs, were confirmed biochemically or immunohistochemically. Taken together, these results implicate TGFβ as a potential molecular effector of the anatomical and functional plasticity of microvessels following SCI.
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Key Words
- endothelin
- insulin-like growth factor binding protein 3 (igfbp-3)
- interleukin-6 (il-6)
- matrix metalloproteinase 9 (mmp-9)
- plasminogen-activator inhibitor 1 (pai-1)
- urokinase-type plasminogen activator (upa)
- aqp-4, aquaporin-4
- bmp, bone morphogenetic protein
- bscb, blood-spinal cord-barrier
- cns, central nervous system
- ec, endothelial cell
- et, endothelin
- gfap, glial fibrillary acidic protein
- huvec, human umbilical vein endothelial cell
- igf, insulin-like growth factor
- igfbp-3, igf-binding protein 3
- il, interleukin
- lea, lycopersicon esculentum agglutinin
- llc, large latent complex
- map2, microtubule-associated protein 2
- mcao, middle cerebral artery occlusion
- mmp, matrix metalloproteinase
- nvu, neurovascular unit
- pa, plasminogen activator
- pai, pa inhibitor
- pas, pa system
- sci, spinal cord injury
- smvec, spinal microvascular ec
- tbs, tris-buffered saline
- tgfβ, transforming growth factor β
- tpa, tissue-type pa
- tsp-1, thrombospondin-1
- upa, urokinase-type pa
- upar, upa receptor
- vegf, vascular endothelial growth factor
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Affiliation(s)
- Richard L Benton
- daggerKentucky Spinal Cord Injury Research Center, Department of Neurological Surgery, University of Louisville School of Medicine, Louisville, KY 40292, USA.
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Wang WM, Ge G, Lim N, Nagase H, Greenspan D. TIMP-3 inhibits the procollagen N-proteinase ADAMTS-2. Biochem J 2006; 398:515-9. [PMID: 16771712 PMCID: PMC1559475 DOI: 10.1042/bj20060630] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2006] [Revised: 05/30/2006] [Accepted: 06/14/2006] [Indexed: 11/17/2022]
Abstract
ADAMTS-2 is an extracellular metalloproteinase responsible for cleaving the N-propeptides of procollagens I-III; an activity necessary for the formation of collagenous ECM (extracellular matrix). The four TIMPs (tissue inhibitors of metalloproteinases) regulate the activities of matrix metalloproteinases, which are involved in degrading ECM components. Here we delineate the abilities of the TIMPs to affect biosynthetic processing of procollagens. TIMP-1, -2 and -4 show no inhibitory activity towards ADAMTS-2, in addition none of the TIMPs showed inhibitory activity towards bone morphogenetic protein 1, which is responsible for cleaving procollagen C-propeptides. In contrast, TIMP-3 is demonstrated to inhibit ADAMTS-2 in vitro with apparent Ki values of 160 and 602 nM, in the presence of heparin or without respectively; and TIMP-3 is shown to inhibit procollagen processing by cells.
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Key Words
- adamts-2
- bone morphogenetic protein 1 (bmp1)
- extracellular matrix
- metalloproteinase
- procollagen
- tissue inhibitor of metalloproteinase (timp)
- adamts, a disintegrin and metalloproteinase with thrombospondin motifs
- bmp, bone morphogenetic protein
- dmem, dulbecco's modified eagle's medium
- ecm, extracellular matrix
- mef, mouse embryonic fibroblast
- mmp, matrix metalloproteinase
- n-timp-3, n-terminal domain of tissue inhibitor of metalloproteinase-3
- pnp, procollagen n-proteinase
- pcp, procollagen c-proteinase
- timp, tissue inhibitors of metalloproteinase
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Affiliation(s)
- Wei-Man Wang
- *Department of Pathology and Laboratory Medicine, University of Wisconsin, Madison, WI 53706, U.S.A
- †Program in Cellular and Molecular Biology, University of Wisconsin, Madison, WI 53706, U.S.A
| | - Gaoxiang Ge
- *Department of Pathology and Laboratory Medicine, University of Wisconsin, Madison, WI 53706, U.S.A
| | - N. H. Lim
- ‡Kennedy Institute of Rheumatology, Imperial College, 1 Aspenlea Road, Hammersmith, London W6 8LH U.K
| | - Hideaki Nagase
- ‡Kennedy Institute of Rheumatology, Imperial College, 1 Aspenlea Road, Hammersmith, London W6 8LH U.K
| | - Daniel S. Greenspan
- *Department of Pathology and Laboratory Medicine, University of Wisconsin, Madison, WI 53706, U.S.A
- †Program in Cellular and Molecular Biology, University of Wisconsin, Madison, WI 53706, U.S.A
- §Department of Pharmacology, University of Wisconsin, Madison, WI 53706, U.S.A
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Meltzer EO, Hamilos DL, Hadley JA, Lanza DC, Marple BF, Nicklas RA, Bachert C, Baraniuk J, Baroody FM, Benninger MS, Brook I, Chowdhury BA, Druce HM, Durham S, Ferguson B, Gwaltney JM, Kaliner M, Kennedy DW, Lund V, Naclerio R, Pawankar R, Piccirillo JF, Rohane P, Simon R, Slavin RG, Togias A, Wald ER, Zinreich SJ. Rhinosinusitis: establishing definitions for clinical research and patient care. J Allergy Clin Immunol 2004; 114:155-212. [PMID: 15577865 PMCID: PMC7119142 DOI: 10.1016/j.jaci.2004.09.029] [Citation(s) in RCA: 589] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background There is a need for more research on all forms of rhinosinusitis. Progress in this area has been hampered by a lack of consensus definitions and the limited number of published clinical trials. Objectives To develop consensus definitions for rhinosinusitis and outline strategies useful in clinical trials. Methods Five national societies, The American Academy of Allergy, Asthma and Immunology; The American Academy of Otolaryngic Allergy; The American Academy of Otolaryngology Head and Neck Surgery; The American College of Allergy, Asthma and Immunology; and the American Rhinologic Society formed an expert panel from multiple disciplines. Over two days, the panel developed definitions for rhinosinusitis and outlined strategies for design of clinical trials. Results Committee members agreed to adopt the term “rhinosinusitis” and reached consensus on definitions and strategies for clinical research on acute presumed bacterial rhinosinusitis, chronic rhinosinusitis without polyposis, chronic rhinosinusitis with polyposis, and classic allergic fungal rhinosinusitis. Symptom and objective criteria, measures for monitoring research progress, and use of symptom scoring tools, quality-of-life instruments, radiologic studies, and rhinoscopic assessment were outlined for each condition. Conclusion The recommendations from this conference should improve accuracy of clinical diagnosis and serve as a starting point for design of rhinosinusitis clinical trials.
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Key Words
- rhinosinusitis
- sinusitis
- nasal polyposis
- quality of life
- clinical trials
- aaaai, american academy of allergy, asthma and immunology
- aao-hns, american academy of otolaryngology–head and neck surgery
- afrs, allergic fungal rhinosinusitis
- cfu, colony-forming units
- cns, coagulase-negative staphylococci
- crs, chronic rhinosinusitis
- crssnp, crs without nasal polyps
- crswnp, crs with nasal polyps
- ct, computed tomography
- ecp, eosinophilic cationic protein
- gerd, gastroesophageal reflux disease
- icam-1, intercellular adhesion molecule 1
- mmp, matrix metalloproteinase
- mri, magnetic resonance imaging
- np, nasal polyp
- pbmc, peripheral blood mononuclear cell
- pnif, peak flow nasal inspiratory flow
- qol, quality of life
- rsdi, rhinosinusitis disability index
- rsom-31, rhinosinusitis outcome measure-31
- sae, staphylococcus aureus enterotoxin
- serd, supraesophageal reflux disease
- sf-36, medical outcomes study short form-36
- snot-20, sino-nasal outcome test-20
- tgf-β1, transforming growth factor β1
- vβ, t-cell receptor variable region β chain
- vcam-1, vascular cell adhesion molecule 1
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Affiliation(s)
- Eli O Meltzer
- Department of Pediatrics, Allergy and Asthma Medical Group and Research Center, 9610 Granite Ridge Drive, Suite B, San Diego, CA 92123, USA.
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Martínez A, Oh HR, Unsworth EJ, Bregonzio C, Saavedra JM, Stetler-Stevenson WG, Cuttitta F. Matrix metalloproteinase-2 cleavage of adrenomedullin produces a vasoconstrictor out of a vasodilator. Biochem J 2004; 383:413-8. [PMID: 15307819 PMCID: PMC1133733 DOI: 10.1042/bj20040920] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2004] [Revised: 07/22/2004] [Accepted: 08/13/2004] [Indexed: 11/17/2022]
Abstract
MMPs (matrix metalloproteinases) play a major role in the pathogenesis of hypertension by altering the extracellular matrix during cardiovascular remodelling. In the present study we show that MMP-2, but not MMP-9, cleaves the vasodilator peptide AM (adrenomedullin). Addition of the AM-binding protein, complement factor H, prevents this cleavage, providing a hitherto unknown mechanism of action for this binding protein. We identified the signature cleavage fragments and found some of them in human urine, suggesting that MMP-2 processing of AM may occur in vivo. Synthetic AM fragments regulated blood pressure in rats. The larger peptides are vasodilators, as is intact AM, whereas intermediate fragments did not affect blood pressure. In contrast, AM(11-22) elicited vasoconstriction. Studies of AM receptor activation in Rat2 cells confirm that the larger AM cleavage peptides activated this receptor, whereas AM(11-22) did not. The present study defines a new mechanism through which MMP-2 may regulate blood pressure by simultaneously eliminating a vasodilator and generating a vasoconstrictor.
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Affiliation(s)
- Alfredo Martínez
- Cell and Cancer Biology Branch and Vascular Biology Faculty, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.
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Mills Shaw KR, Wrobel CN, Brugge JS. Use of three-dimensional basement membrane cultures to model oncogene-induced changes in mammary epithelial morphogenesis. J Mammary Gland Biol Neoplasia 2004; 9:297-310. [PMID: 15838601 PMCID: PMC1509102 DOI: 10.1007/s10911-004-1402-z] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The development of breast carcinomas involves a complex set of phenotypic alterations in breast epithelial cells and the surrounding microenvironment. While traditional transformation assays provide models for investigating certain aspects of the cellular processes associated with tumor initiation and progression, they do not model alterations in tissue architecture that are critically involved in tumor development. In this review, we provide examples of how three-dimensional (3D) cell culture models can be utilized to dissect the pathways involved in the development of mammary epithelial structures and to elucidate the mechanisms responsible for oncogene-induced phenotypic alterations in epithelial behavior and architecture. Many normal mammary epithelial cell lines undergo a stereotypic morphogenetic process when grown in the presence of exogenous matrix proteins. This 3D morphogenesis culminates in the formation of well-organized, polarized spheroids, and/or tubules that are highly reminiscent of normal glandular architecture. In contrast, transformed cell lines isolated from mammary tumors exhibit significant deviations from normal epithelial behavior in 3D culture. We describe the use of 3D models as a method for both reconstructing and deconstructing the cell biological and biochemical events involved in mammary neoplasia.
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Key Words
- mammary epithelial cells
- breast cancer
- morphogenesis
- 3d cell culture
- oncogenesis
- 3d
- three-dimensional
- bard-1, brca-1 associated ring domain
- cdk, cyclin-dependent kinase
- cgh, comparative genomic hybridization
- csf-1, colony-stimulating factor
- csf-1r, colony-stimulating factor receptor
- dcis, ductal carcinoma in situ
- e7, human papilloma virus 16 e7 protein
- ecm, extracellular matrix
- egf, epidermal growth factor
- egfr, epidermal growth factor receptor
- ehs, engelbreth-holm-swarm
- emt, epithelial-to-mesenchymal transition
- er, estrogen receptor
- gap, gtpase activating protein
- gef, guanine nucleotide exchange factor
- hgf, hepatocyte growth factor
- igf, insulin-like growth factor
- il-1, interleukin-1
- mapk, mitogen-activated protein kinase
- mec, mammary epithelial cell
- mmp, matrix metalloproteinase
- mmtv, mouse mammary tumor virus
- pi3k, phosphotidylinositol-3 kinase
- pr, progesterone receptor
- rb, retinoblastoma protein
- tgfβ, transforming growth factor beta
- vegf, vascular endothelial growth factor
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Affiliation(s)
| | - Carolyn N. Wrobel
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts
| | - Joan S. Brugge
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts
- To whom correspondence should be addressed at Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115; e-mail: joan
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