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  1. Article: Et kollagen XVIII-fragment hemmer angiogenese.

    Zätterström, U K / Fukai, N / Olsen, B R

    Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke

    2000  Volume 120, Issue 29, Page(s) 3547–3550

    Abstract: Background: Malignant tumours may produce substances with both stimulatory and inhibitory effect on angiogenesis.: Material and methods: A protein fragment with angiogenesis-inhibiting potential was recently identified in conditioned media from a ... ...

    Title translation A fragment of collagen XVIII inhibits angiogenesis.
    Abstract Background: Malignant tumours may produce substances with both stimulatory and inhibitory effect on angiogenesis.
    Material and methods: A protein fragment with angiogenesis-inhibiting potential was recently identified in conditioned media from a murine endothelial tumour cell line.
    Results: The angiogenesis inhibitor, endostatin, is a 20 kDa C-terminal fragment of collagen XVIII, a proteoglycan/collagen found in vessel walls and basement membranes. The generation of endostatin or endostatin-like collagen XVIII fragments is catalyzed by proteolytic enzymes, including cathepsin L and matrix metalloproteases, that cleave peptide bonds within the protease-sensitive hinge region of the C-terminal domain.
    Interpretation: The physiological processing of collagen XVIII to endostatin may represent a local control mechanism for the regulation of angiogenesis. The outcome of ongoing clinical trials will determine the role of endostatin as a possible angiogenesis-inhibiting drug in the future.
    MeSH term(s) Angiogenesis Inhibitors/administration & dosage ; Angiogenesis Inhibitors/chemistry ; Animals ; Collagen/chemistry ; Endothelial Growth Factors/administration & dosage ; Endothelial Growth Factors/chemistry ; Humans ; Mice ; Neoplasms/blood supply ; Neoplasms/drug therapy ; Neovascularization, Pathologic/drug therapy ; Peptide Fragments/administration & dosage ; Peptide Fragments/chemistry ; Tumor Cells, Cultured
    Chemical Substances Angiogenesis Inhibitors ; Endothelial Growth Factors ; Peptide Fragments ; Collagen (9007-34-5)
    Language Norwegian
    Publishing date 2000-11-30
    Publishing country Norway
    Document type English Abstract ; Journal Article ; Review
    ZDB-ID 603504-8
    ISSN 0807-7096 ; 0029-2001
    ISSN (online) 0807-7096
    ISSN 0029-2001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Growth of xenografted head and neck cancer in nude mice pre-treated with whole body irradiation.

    Zätterström, U K / Wennerberg, J

    Acta oto-laryngologica

    1991  Volume 111, Issue 6, Page(s) 1170–1177

    Abstract: In an attempt to enhance the primary acceptance rate of human squamous cell carcinoma of the head and neck (HNSCC), nude mice (BALB/c) were given whole body irradiation (WBI) prior to heterotransplantation of tumour specimens. A total of 27 fresh HNSCC ... ...

    Abstract In an attempt to enhance the primary acceptance rate of human squamous cell carcinoma of the head and neck (HNSCC), nude mice (BALB/c) were given whole body irradiation (WBI) prior to heterotransplantation of tumour specimens. A total of 27 fresh HNSCC biopsies were transplanted, with a take rate of 15%. No difference in primary tumour acceptance rate was found between irradiated and non-irradiated mice. Only one of the accepted tumours established growth both in irradiated and non-irradiated mice. In a second experiment, three previously established tumour lines of HNSCC were re-transplanted to irradiated and non-irradiated mice. As compared with non-irradiated mice, the growth rate was lower in all tumours transplanted to irradiated mice, the difference being statistically significant in two out of the three tumour lines. The results of the study show that attempted immunosuppression by WBI of nude mice prior to tumour implantation does not improve the growth conditions of HNSCC. These findings further emphasise the complexity of the transplantation barrier against human tumour xenografts in nude mice.
    MeSH term(s) Animals ; Carcinoma, Squamous Cell/immunology ; Carcinoma, Squamous Cell/pathology ; Female ; Head and Neck Neoplasms/immunology ; Head and Neck Neoplasms/pathology ; Humans ; Immunosuppression ; Male ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; Neoplasm Transplantation ; Transplantation, Heterologous ; Whole-Body Irradiation
    Language English
    Publishing date 1991
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 0001-6489
    ISSN 0001-6489
    DOI 10.3109/00016489109100773
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Flow cytometry analysis of malignant tumors of the head and neck--differences between two methods in the recognition of aneuploidy.

    Wennerberg, J / Baldetorp, B / Wahlberg, P / Zätterström, U K

    Analytical cellular pathology : the journal of the European Society for Analytical Cellular Pathology

    1996  Volume 12, Issue 3, Page(s) 125–136

    Abstract: DNA aneuploidy, which reflects changes in nuclear DNA-content, as determined cytometrically is a candidate prognostic factor in squamous cell carcinoma of the head and neck. The aim of this study was to compare two different preparation methods with ... ...

    Abstract DNA aneuploidy, which reflects changes in nuclear DNA-content, as determined cytometrically is a candidate prognostic factor in squamous cell carcinoma of the head and neck. The aim of this study was to compare two different preparation methods with respect to their use in detecting aneuploid tumor cell populations in malignant tumors of the head and neck. Fresh frozen tumor material was used. The methods compared were a multistep procedure (A) including fixation of cells and enzymatic treatment, and a one step procedure (B). Both include RNAse and the use of propidium iodide for DNA staining. Forty-seven percent of the tumors were non-diploid according to method A, and 29% according to method B, discordant findings being made in 15 tumors, only two of which were non-SCC. Defining a 'true non-diploid tumor' in this series as a tumor with a DNA index outside the range of diploidy detected either by method A or B, 59% (29/49) of the tumors were non-diploid. The sensitivity was 0.48 (14/29) for method B and 0.79 (23/29) for method A. The striking differences in accuracy between methods A and B emphasize the need of caution when new methods are introduced, and when results obtained with different methods are compared.
    MeSH term(s) Analysis of Variance ; Aneuploidy ; Carcinoma, Squamous Cell/genetics ; Carcinoma, Squamous Cell/pathology ; Cell Separation/methods ; DNA, Neoplasm/analysis ; Flow Cytometry/methods ; Head and Neck Neoplasms/genetics ; Head and Neck Neoplasms/pathology ; Humans ; Image Processing, Computer-Assisted ; Reproducibility of Results
    Chemical Substances DNA, Neoplasm
    Language English
    Publishing date 1996-12
    Publishing country Netherlands
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1066445-2
    ISSN 1878-3651 ; 0921-8912
    ISSN (online) 1878-3651
    ISSN 0921-8912
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Cell cycle time, growth fraction and cell loss in xenografted head and neck cancer.

    Zätterström, U K / Källén, A / Wennerberg, J

    In vivo (Athens, Greece)

    1991  Volume 5, Issue 2, Page(s) 137–142

    Abstract: In a previous cell kinetic study with DNA flow cytometry (FCM) on xenografted human squamous cell carcinoma of the head and neck (HNSCC), there were significant variations in cell cycle phase distribution during early growth of the transplanted tumors. ... ...

    Abstract In a previous cell kinetic study with DNA flow cytometry (FCM) on xenografted human squamous cell carcinoma of the head and neck (HNSCC), there were significant variations in cell cycle phase distribution during early growth of the transplanted tumors. The object of the present study was to investigate further the cell kinetic mechanisms associated with variation in the growth rate of HNSCC. Xenografts from the same tumor line were examined on three different occasions: 12, 25 and 36 days following transplantation into nude mice. Cell cycle time "Tc", tumor growth fraction (GF) and cell loss factor were determined by computerized curve-fit analysis from percentage labelled mitoses curves. The mean growth curve of the tumors was logistic, with tumor doubling time (Td) ranging from 7.39 days to 8.86 days, and increasing as tumor volume increased. Although growth rate was higher in younger tumors, the cell cycle was longer with a median "Tc" of 69 hours on day 12 versus 34 hours on day 36. There were only minor variations in cell cycle phase distribution as measured by FCM. The growth fraction decreased slightly from 80% to 69% between day 12 and day 36, whereas cell loss factor increased markedly from 49% on day 12 to 78% on day 36. The results of the study emphasize the fact that cell loss is one of the most important cell kinetic determinants of tumor growth rate. This should be borne in mind when calculating proliferative cell kinetics in HNSCC.
    MeSH term(s) Animals ; Autoradiography ; Cell Cycle ; Cell Survival ; DNA Replication ; Female ; Head and Neck Neoplasms/pathology ; Humans ; Kinetics ; Male ; Mice ; Mice, Nude ; Middle Aged ; Mitosis ; Models, Biological ; Neoplasm Transplantation ; Thymidine/metabolism ; Time Factors ; Transplantation, Heterologous ; Tritium
    Chemical Substances Tritium (10028-17-8) ; Thymidine (VC2W18DGKR)
    Language English
    Publishing date 1991-03
    Publishing country Greece
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 807031-3
    ISSN 1791-7549 ; 0258-851X
    ISSN (online) 1791-7549
    ISSN 0258-851X
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Collagen XVIII/endostatin structure and functional role in angiogenesis.

    Zatterstrom, U K / Felbor, U / Fukai, N / Olsen, B R

    Cell structure and function

    2000  Volume 25, Issue 2, Page(s) 97–101

    Abstract: The angiogenesis inhibitor endostatin is a 20 kDA C-terminal fragment of collagen XVIII, a proteoglycan/collagen found in vessel walls and basement membranes. The endostatin fragment was originally identified in conditioned media from a murine ... ...

    Abstract The angiogenesis inhibitor endostatin is a 20 kDA C-terminal fragment of collagen XVIII, a proteoglycan/collagen found in vessel walls and basement membranes. The endostatin fragment was originally identified in conditioned media from a murine endothelial tumor cell line. Endostatin inhibits endothelial cell migration in vitro and appears to be highly effective in murine in vivo studies. The molecular mechanisms behind the inhibition of angiogenesis have not yet been elucidated. Studies of the crystal structure of endostatin have shown a compact globular fold, with one face particularly rich in arginine residues acting as a heparin-binding epitope. It was initially suggested that zinc binding was essential for the antiangiogenic mechanism but later studies indicate that zinc has a structural rather than a functional role in endostatin. The generation of endostatin or endostatin-like collagen XVIII fragments is catalyzed by proteolytic enzymes, including cathepsin L and matrix metalloproteases, that cleave peptide bonds within the protease-sensitive hinge region of the C-terminal domain. The processing of collagen XVIII to endostatin may represent a local control mechanism for the regulation of angiogenesis.
    MeSH term(s) Angiogenesis Inhibitors/chemistry ; Angiogenesis Inhibitors/metabolism ; Animals ; Chick Embryo ; Collagen/chemistry ; Collagen/metabolism ; Collagen Type XVIII ; Endostatins ; Endothelium, Vascular/metabolism ; Humans ; Mice ; Neovascularization, Pathologic/metabolism ; Neovascularization, Physiologic ; Peptide Fragments/chemistry ; Peptide Fragments/metabolism ; Peptide Hydrolases/metabolism
    Chemical Substances Angiogenesis Inhibitors ; Collagen Type XVIII ; Endostatins ; Peptide Fragments ; Collagen (9007-34-5) ; Peptide Hydrolases (EC 3.4.-)
    Language English
    Publishing date 2000-04
    Publishing country Japan
    Document type Journal Article ; Review
    ZDB-ID 197293-5
    ISSN 0386-7196
    ISSN 0386-7196
    DOI 10.1247/csf.25.97
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  6. Article: Oral cancer after using Swedish snus (smokeless tobacco) for 70 years - a case report.

    Zatterstrom, U K / Svensson, M / Sand, L / Nordgren, H / Hirsch, J M

    Oral diseases

    2004  Volume 10, Issue 1, Page(s) 50–53

    Abstract: Whereas the smoking habit has declined significantly in Sweden in recent decades, there has been a marked increase in the consumption of 'snus' (oral moist snuff). The use of this smokeless tobacco, exposing the user locally to carcinogenic nitrosamines, ...

    Abstract Whereas the smoking habit has declined significantly in Sweden in recent decades, there has been a marked increase in the consumption of 'snus' (oral moist snuff). The use of this smokeless tobacco, exposing the user locally to carcinogenic nitrosamines, raises the question - will the increasing use of snuff eventually lead to a greater incidence of oral cancer? We report the case of a 90-year-old man who developed a localized squamous cell carcinoma in the gingival fold under the upper lip, at the exact place where he had regularly placed loose oral snuff for 70 years. Although this is a reminder of a prevailing cancer risk, the time frame indicates that the risk is slight. This is consistent with recent epidemiological reports regarding the minor risk of snuff-associated cancer in the Scandinavian countries.
    MeSH term(s) Aged ; Aged, 80 and over ; Carcinogens/adverse effects ; Carcinoma, Squamous Cell/etiology ; Gingival Neoplasms/etiology ; Humans ; Lip Neoplasms/etiology ; Male ; Nitrosamines/adverse effects ; Risk Factors ; Sweden ; Tobacco, Smokeless/adverse effects
    Chemical Substances Carcinogens ; Nitrosamines
    Language English
    Publishing date 2004-01-01
    Publishing country Denmark
    Document type Case Reports ; Journal Article
    ZDB-ID 1290529-x
    ISSN 1601-0825 ; 1354-523X
    ISSN (online) 1601-0825
    ISSN 1354-523X
    DOI 10.1111/j.1601-0825.2004.00959.x
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  7. Article: Squamous cell carcinoma of the head and neck heterotransplanted to nude mice. Take rate in relation to patient survival.

    Zätterström, U K / Wennerberg, J / Attewell, R / Ask, A

    Cancer

    1990  Volume 66, Issue 1, Page(s) 145–151

    Abstract: Biopsy specimens from 62 human single primary squamous cell carcinomas (SCC) of the head and neck were xenografted into nude mice. To evaluate the prognostic significance of successful heterotransplantation, the 62 cases were retrospectively examined for ...

    Abstract Biopsy specimens from 62 human single primary squamous cell carcinomas (SCC) of the head and neck were xenografted into nude mice. To evaluate the prognostic significance of successful heterotransplantation, the 62 cases were retrospectively examined for survival, adjusting for possible confounders by multivariate analysis. The recorded take rate in the first passage was 24%. Median survival in the take group was 25 months versus 74 months in the nontake group, which is not statistically significant in this material. However, the numerical difference in survival between the take groups is in accordance with the concept that human tumors accepted as xenografts on nude mice may constitute a selected group of malignancies. This has to be considered when using heterotransplanted human tumors for in vivo investigations of SCC of the head and neck.
    MeSH term(s) Aged ; Analysis of Variance ; Animals ; Biopsy ; Carcinoma, Squamous Cell/mortality ; Carcinoma, Squamous Cell/pathology ; Female ; Head and Neck Neoplasms/mortality ; Head and Neck Neoplasms/pathology ; Humans ; Male ; Mice ; Mice, Inbred BALB C ; Middle Aged ; Neoplasm Transplantation ; Prognosis ; Retrospective Studies ; Transplantation, Heterologous
    Language English
    Publishing date 1990-07-01
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1429-1
    ISSN 1097-0142 ; 0008-543X ; 1934-662X
    ISSN (online) 1097-0142
    ISSN 0008-543X ; 1934-662X
    DOI 10.1002/1097-0142(19900701)66:1<145::aid-cncr2820660126>3.0.co;2-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Tumor angiogenesis and prognosis in squamous cell carcinoma of the head and neck.

    Zätterström, U K / Brun, E / Willén, R / Kjellén, E / Wennerberg, J

    Head & neck

    1995  Volume 17, Issue 4, Page(s) 312–318

    Abstract: Background: The progression of tumor growth requires the recruitment of new blood vessels. It has been suggested that the degree of neovascularization would correlate with clinical prognosis. The purpose of the present study was to ascertain whether ... ...

    Abstract Background: The progression of tumor growth requires the recruitment of new blood vessels. It has been suggested that the degree of neovascularization would correlate with clinical prognosis. The purpose of the present study was to ascertain whether tumor vascularization correlated with clinical outcome in cases of primary squamous cell carcinoma of the head and neck (SCCHN).
    Methods: In tumor biopsies from 48 patients, microvessel density was determined by immunohistochemistry based on polyclonal antibodies against factor VIII related endothelial antigen. Computerized image analysis was used to evaluate the staining intensity per histologic area. The degree of staining was quantitated and expressed as microvessel density, low and high microvessel density subgroups being compared with regard to survival.
    Results: Median survival was 10 months in the subgroup with very low microvessel density scores, as contrasted to 69 months in the remainder with high scores (p = 0.08). Neither the patient's age, TNM status, clinical stage, nor histologic grade was related to microvessel density. Among the patients who eventually died of SCCHN (n = 23), there was a subgroup of patients with complete response to radiotherapy. This subgroup had significantly higher microvessel density and longer survival than did the patients who responded poorly or not at all to radiotherapy.
    Conclusion: The findings suggest that in SCCHN the degree of vascularization might be used as a predictor of response to radiotherapy.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Analysis of Variance ; Antineoplastic Combined Chemotherapy Protocols/therapeutic use ; Carcinoma, Squamous Cell/blood supply ; Carcinoma, Squamous Cell/mortality ; Carcinoma, Squamous Cell/pathology ; Carcinoma, Squamous Cell/radiotherapy ; Combined Modality Therapy ; Female ; Head and Neck Neoplasms/blood supply ; Head and Neck Neoplasms/mortality ; Head and Neck Neoplasms/pathology ; Head and Neck Neoplasms/radiotherapy ; Humans ; Immunohistochemistry ; Male ; Middle Aged ; Neoplasm Staging ; Neovascularization, Pathologic/pathology ; Neovascularization, Pathologic/physiopathology ; Prognosis ; Survival Rate
    Language English
    Publishing date 1995-07
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 645165-2
    ISSN 1097-0347 ; 1043-3074 ; 0148-6403
    ISSN (online) 1097-0347
    ISSN 1043-3074 ; 0148-6403
    DOI 10.1002/hed.2880170407
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  9. Article: Radiation effects on S-phase duration, labelling index, potential doubling time and DNA distribution in head and neck cancer xenografts.

    Zätterström, U K / Engellau, J / Johansson, M C / Wennerberg, J / Kjellén, E

    Acta oncologica (Stockholm, Sweden)

    1995  Volume 34, Issue 2, Page(s) 205–211

    Abstract: The effect of irradiation on S-phase duration (Ts), labelling index (LI), potential doubling time (Tpot), and cell cycle phase distributions was determined by DNA flow cytometry in xenografted human squamous cell carcinoma of the head and neck (SCCHN). ... ...

    Abstract The effect of irradiation on S-phase duration (Ts), labelling index (LI), potential doubling time (Tpot), and cell cycle phase distributions was determined by DNA flow cytometry in xenografted human squamous cell carcinoma of the head and neck (SCCHN). Tumours were treated with a single dose of 3 Gy, and excised at intervals over a 90-h period. Six hours before each excision the tumours were labelled in vivo with bromodeoxyuridine (BrdUrd). Although the growth rate of irradiated tumours was comparable with that of untreated controls, analysis of BrdUrd uptake revealed a transient reduction of LI and a prolongation of Ts in irradiated tumours. Maximum mean Tpot was 931 days in irradiated tumours as compared to 13 days in untreated controls. The variations in Ts, LI and Tpot all occurred within the first hours after irradiation; during the remainder of the observation time, the values of the variables did not differ from those of untreated controls. In irradiated tumours the distribution of cells according to DNA content changed significantly on three occasions during the observation period: 1) Parallel to the initial lowering of LI and prolongation of Ts there was a transient increase in the proportion of cells in G0/G1 and a decrease in the proportion of cells in S and G2; 2) At 18 h, the most pronounced cell cycle phase redistribution occurred when the G0/G1 fraction decreased and the S and G2 phase fractions increased; 3) At 66 h (i.e., approximately one cell cycle later), the pattern was the same as that after 18 h. The findings suggest that the transient prolongation of DNA replication seen in SCCHN cells immediately after a single radiation dose is a symptom of DNA damage inflicted during late G1 or early S-phase, and that this disturbance in DNA synthesis is associated with the subsequent accumulation of cells in G2 phase.
    MeSH term(s) Animals ; Carcinoma, Squamous Cell/pathology ; DNA, Neoplasm/analysis ; DNA, Neoplasm/radiation effects ; Dose-Response Relationship, Radiation ; Female ; Head and Neck Neoplasms/pathology ; Humans ; Male ; Mice ; Mice, Nude ; S Phase/physiology ; S Phase/radiation effects ; Transplantation, Heterologous
    Chemical Substances DNA, Neoplasm
    Language English
    Publishing date 1995
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 0284-186X
    ISSN 0284-186X
    DOI 10.3109/02841869509093957
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Barnmorskors roll för bättre abortvård--erfarenheter från rika och fattiga länder.

    Zätterström, Catharina / Ransjö-Arvidson, Anna Berit / Bergström, Staffan / Björklund, Ulla / Estborn, Bengt / Johansson, Annika / Sundström, Kajsa

    Lakartidningen

    2002  Volume 99, Issue 19, Page(s) 2186–2189

    Title translation The role of midwives for better care in connection with abortions--experiences from rich and poor countries.
    MeSH term(s) Abortion, Induced/nursing ; Abortion, Induced/standards ; Abortion, Legal/nursing ; Abortion, Legal/standards ; Developed Countries ; Developing Countries ; Female ; Humans ; Models, Organizational ; Nurse Midwives ; Nurse's Role ; Pregnancy ; Quality Assurance, Health Care ; Women's Health
    Language Swedish
    Publishing date 2002-05-08
    Publishing country Sweden
    Document type Journal Article
    ZDB-ID 391010-6
    ISSN 1652-7518 ; 0023-7205
    ISSN (online) 1652-7518
    ISSN 0023-7205
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