LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 8 of total 8

Search options

  1. Article: Intake of Vitamins D and A and Calcium and Risk of Non-Hodgkin Lymphoma: San Francisco Bay Area Population-Based Case-Control Study

    Mikhak, Bahar / Bracci, Paige M / Gong, Zhihong

    Nutrition and cancer. 2012 July 1, v. 64, no. 5

    2012  

    Abstract: Several nutrients identified as potentially cancer protective have been inconsistently associated with non-Hodgkin lymphoma (NHL) risk. Dietary history data, including use of vitamin supplements, were collected using a semiquantitative food frequency ... ...

    Abstract Several nutrients identified as potentially cancer protective have been inconsistently associated with non-Hodgkin lymphoma (NHL) risk. Dietary history data, including use of vitamin supplements, were collected using a semiquantitative food frequency questionnaire administered during in-person interviews with 4,133 participants (2,052 cases, 2,081 controls) in a San Francisco Bay Area population-based case-control study. Data were used to determine the association of intake levels of vitamins D and A and calcium with risk of NHL and NHL subtypes. Odds ratios (OR) and 95% confidence intervals (CI) were computed as estimates of relative risk using adjusted unconditional logistic regression. Increasing vitamin D intake from food and supplements was positively associated with NHL risk in men (5th quintile: OR = 1.6, 95% CI = 1.0–2.4, Pₜᵣₑₙd = 0.07) and with diffuse large B-cell lymphoma (DLBCL) in women and men (5th quintile: OR = 1.6, 95% CI = 1.0–2.5, Pₜᵣₑₙd = 0.02); that was largely due to the effect in men (Pₜᵣₑₙd = 0.03). These results do not support a strong role for vitamin D intake with NHL risk, with the exception of a potential association for DLBCL risk in men. Our results should be interpreted conservatively until further investigation in larger pooled studies can be conducted to better assess the role of vitamin D intake in lymphomagenesis.
    Keywords B-lymphocytes ; calcium ; case-control studies ; confidence interval ; food frequency questionnaires ; interviews ; men ; non-Hodgkin lymphoma ; nutrients ; regression analysis ; relative risk ; vitamin D ; vitamin supplements ; women
    Language English
    Dates of publication 2012-0701
    Size p. 674-684.
    Publishing place Taylor & Francis Group
    Document type Article
    ZDB-ID 2025822-7
    ISSN 1532-7914 ; 0163-5581
    ISSN (online) 1532-7914
    ISSN 0163-5581
    DOI 10.1080/01635581.2012.689916
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  2. Article ; Online: Intake of vitamins D and A and calcium and risk of non-Hodgkin lymphoma: San Francisco Bay Area population-based case-control study.

    Mikhak, Bahar / Bracci, Paige M / Gong, Zhihong

    Nutrition and cancer

    2012  Volume 64, Issue 5, Page(s) 674–684

    Abstract: Several nutrients identified as potentially cancer protective have been inconsistently associated with non-Hodgkin lymphoma (NHL) risk. Dietary history data, including use of vitamin supplements, were collected using a semiquantitative food frequency ... ...

    Abstract Several nutrients identified as potentially cancer protective have been inconsistently associated with non-Hodgkin lymphoma (NHL) risk. Dietary history data, including use of vitamin supplements, were collected using a semiquantitative food frequency questionnaire administered during in-person interviews with 4,133 participants (2,052 cases, 2,081 controls) in a San Francisco Bay Area population-based case-control study. Data were used to determine the association of intake levels of vitamins D and A and calcium with risk of NHL and NHL subtypes. Odds ratios (OR) and 95% confidence intervals (CI) were computed as estimates of relative risk using adjusted unconditional logistic regression. Increasing vitamin D intake from food and supplements was positively associated with NHL risk in men (5th quintile: OR = 1.6, 95% CI = 1.0-2.4, P(trend) = 0.07) and with diffuse large B-cell lymphoma (DLBCL) in women and men (5th quintile: OR = 1.6, 95% CI = 1.0-2.5, P(trend) = 0.02); that was largely due to the effect in men (P(trend) = 0.03). These results do not support a strong role for vitamin D intake with NHL risk, with the exception of a potential association for DLBCL risk in men. Our results should be interpreted conservatively until further investigation in larger pooled studies can be conducted to better assess the role of vitamin D intake in lymphomagenesis.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Calcium, Dietary/administration & dosage ; Calcium, Dietary/adverse effects ; Calcium, Dietary/therapeutic use ; California/epidemiology ; Case-Control Studies ; Diet/adverse effects ; Dietary Supplements/adverse effects ; Female ; Humans ; Lymphoma, Large B-Cell, Diffuse/epidemiology ; Lymphoma, Large B-Cell, Diffuse/etiology ; Lymphoma, Large B-Cell, Diffuse/prevention & control ; Lymphoma, Non-Hodgkin/epidemiology ; Lymphoma, Non-Hodgkin/etiology ; Lymphoma, Non-Hodgkin/prevention & control ; Male ; Middle Aged ; Risk ; San Francisco/epidemiology ; Sex Characteristics ; Vitamin A/administration & dosage ; Vitamin A/adverse effects ; Vitamin A/therapeutic use ; Vitamin D/administration & dosage ; Vitamin D/adverse effects ; Vitamin D/therapeutic use ; Young Adult
    Chemical Substances Calcium, Dietary ; Vitamin A (11103-57-4) ; Vitamin D (1406-16-2)
    Language English
    Publishing date 2012-06-14
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 424433-3
    ISSN 1532-7914 ; 0163-5581
    ISSN (online) 1532-7914
    ISSN 0163-5581
    DOI 10.1080/01635581.2012.689916
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: A supplementary grading scale for selecting patients with brain arteriovenous malformations for surgery.

    Lawton, Michael T / Kim, Helen / McCulloch, Charles E / Mikhak, Bahar / Young, William L

    Neurosurgery

    2010  Volume 66, Issue 4, Page(s) 702–13; discussion 713

    Abstract: Background: Patient age, hemorrhagic presentation, nidal diffuseness, and deep perforating artery supply are important factors when selecting patients with brain arteriovenous malformations (AVMs) for surgery.: Objective: We hypothesized that these ... ...

    Abstract Background: Patient age, hemorrhagic presentation, nidal diffuseness, and deep perforating artery supply are important factors when selecting patients with brain arteriovenous malformations (AVMs) for surgery.
    Objective: We hypothesized that these factors outside of the Spetzler-Martin grading system could be combined into a simple, supplementary grading system that would accurately predict neurologic outcome and refine patient selection.
    Methods: A consecutive, single-surgeon series of 300 patients with AVMs treated microsurgically was analyzed in terms of change between preoperative and final postoperative modified Rankin Scale scores. Three different multivariable logistic models (full, Spetzler-Martin, and supplementary models) were constructed to test the association of combined predictor variables with the change in modified Rankin Scale score. A simplified supplementary grading system was developed from the data with points assigned according to each variable and added together for a supplementary AVM grade.
    Results: Predictive accuracy was highest for the full multivariable model (receiver operating characteristic curve area, 0.78), followed by the supplementary model (0.73), and least for the Spetzler-Martin model (0.66). Predictive accuracy of the simplified supplementary grade was significantly better than that of the Spetzler-Martin grade (P = .042), with receiver operating characteristic curve areas of 0.73 and 0.65, respectively.
    Conclusion: This new AVM grading system supplements rather than replaces the well-established Spetzler-Martin grading system and is a better predictor of neurologic outcomes after AVM surgery. The supplementary grading scale has high predictive accuracy on its own and stratifies surgical risk more evenly. The supplementary grading system is easily applicable at the bedside, where it is intended to improve preoperative risk prediction and patient selection for surgery.
    MeSH term(s) Adult ; Arteriovenous Fistula/diagnosis ; Arteriovenous Fistula/surgery ; Embolization, Therapeutic/methods ; Female ; Humans ; Intracranial Arteriovenous Malformations/diagnosis ; Intracranial Arteriovenous Malformations/surgery ; Logistic Models ; Male ; Outcome Assessment, Health Care/methods ; Predictive Value of Tests ; ROC Curve ; Radiosurgery/methods ; Retrospective Studies ; Severity of Illness Index ; Young Adult
    Language English
    Publishing date 2010-04-07
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 135446-2
    ISSN 1524-4040 ; 0148-396X
    ISSN (online) 1524-4040
    ISSN 0148-396X
    DOI 10.1227/01.NEU.0000367555.16733.E1
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Vitamin D receptor (VDR) gene polymorphisms and haplotypes, interactions with plasma 25-hydroxyvitamin D and 1,25-dihydroxyvitamin D, and prostate cancer risk.

    Mikhak, Bahar / Hunter, David J / Spiegelman, Donna / Platz, Elizabeth A / Hollis, Bruce W / Giovannucci, Edward

    The Prostate

    2007  Volume 67, Issue 9, Page(s) 911–923

    Abstract: Background: The vitamin D receptor (VDR) is required for actions of vitamin D. The binding of 1,25-dihydroxyvitamin D to the VDR on prostatic epithelial cells prompts the regulation of cancer-related genes.: Methods: We conducted a nested case- ... ...

    Abstract Background: The vitamin D receptor (VDR) is required for actions of vitamin D. The binding of 1,25-dihydroxyvitamin D to the VDR on prostatic epithelial cells prompts the regulation of cancer-related genes.
    Methods: We conducted a nested case-control study in the Health Professionals Follow-up Study to investigate the role of the VDR Cdx2, Fok1, and Bsm1 gene polymorphisms and associated haplotypes and their interaction with plasma vitamin D metabolites in relation to prostate cancer (PC) risk.
    Results: No association was found between these SNPs or their associated haplotypes and all PC subtypes except that haplotype 2 (A-f-b) with Cdx2 A, Fok1 f, and Bsm1 b alleles and haplotype 3 (A-F-B) with Cdx2 A, Fok1 F and Bsm1 B alleles compared to the most common haplotype (A-F-b), were associated with reduced risk of aggressive PC (high stage or Gleason sum > or =7; P = 0.02), both with two alleles suspected of being low risk. Carriers of the variant Cdx2 A allele who were deficient in plasma 25-hydroxyvitamin D (< or =15 ng/ml) compared to non-carriers with normal 25-hydroxyvitamin D, had a lower risk of total and poorly differentiated PCs (Gleason sum > or =7) (P for interaction = 0.02 and 0.04, respectively). Plasma 1,25-dihydroxyvitamin D deficiency (< or =26 pg/ml) was associated with a threefold risk of poorly differentiated PC (P for interaction = 0.01) when comparing carriers of the Cdx2 A allele to non-carriers with normal 1,25-dihydroxyvitamin D.
    Conclusion: In this population of men, none of the VDR polymorphisms studied was associated with susceptibility to PC.
    MeSH term(s) CDX2 Transcription Factor ; Calcifediol/blood ; Calcifediol/metabolism ; Calcitriol/blood ; Calcitriol/metabolism ; Case-Control Studies ; Follow-Up Studies ; Genetic Predisposition to Disease ; Homeodomain Proteins/genetics ; Humans ; Male ; Polymorphism, Genetic ; Prostatic Neoplasms/epidemiology ; Receptors, Calcitriol/genetics ; Receptors, Calcitriol/metabolism ; Risk Assessment ; Vitamin D Deficiency/genetics
    Chemical Substances CDX2 Transcription Factor ; CDX2 protein, human ; Homeodomain Proteins ; Receptors, Calcitriol ; Calcitriol (FXC9231JVH) ; Calcifediol (P6YZ13C99Q)
    Language English
    Publishing date 2007-06-15
    Publishing country United States
    Document type Journal Article
    ZDB-ID 604707-5
    ISSN 1097-0045 ; 0270-4137
    ISSN (online) 1097-0045
    ISSN 0270-4137
    DOI 10.1002/pros.20570
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Manganese superoxide dismutase (MnSOD) gene polymorphism, interactions with carotenoid levels and prostate cancer risk.

    Mikhak, Bahar / Hunter, David J / Spiegelman, Donna / Platz, Elizabeth A / Wu, Kana / Erdman, John W / Giovannucci, Edward

    Carcinogenesis

    2008  Volume 29, Issue 12, Page(s) 2335–2340

    Abstract: Background: The manganese superoxide dismutase (MnSOD) gene encodes an antioxidant enzyme (SOD2) that may protect cells from oxidative damage. The MnSOD allele with Val as amino acid 16 encodes a protein that has 30-40% lower activity compared with the ... ...

    Abstract Background: The manganese superoxide dismutase (MnSOD) gene encodes an antioxidant enzyme (SOD2) that may protect cells from oxidative damage. The MnSOD allele with Val as amino acid 16 encodes a protein that has 30-40% lower activity compared with the MnSOD Ala variant, hence possibly increasing susceptibility to oxidative stress. On the other hand, some epidemiologic studies suggest that the Ala allele is associated with a higher risk of cancer, including prostate cancer.
    Methods: We conducted a nested case-control study in the Health Professionals Follow-up Study with 612 incident prostate cancer cases and 612 matched controls to investigate the role of the MnSOD gene Ala16Val polymorphism and its joint association with plasma carotenoid concentrations in relation to risk of total prostate cancer and aggressive prostate cancer (advanced stage or Gleason sum > or =7).
    Results: The allele frequencies in the controls were 49.8% for Ala and 50.2% for Val. No association was found between the MnSOD genotype and risk of total and aggressive prostate cancer. Furthermore, no statistically significant interaction was observed between the MnSOD genotype and any of the plasma carotenoids in relation to risk of total and aggressive prostate cancer. In analyses in which we combined data from plasma and dietary carotenoids and created a quintile score to reflect long-term carotenoid status, a 3-fold [95% confidence interval: 1.37-7.02] increased risk of aggressive prostate cancer was observed among men with the Ala/Ala genotype in the presence of low long-term lycopene status (P-value, test for interaction = 0.02) as compared with men with the Ala/Val+Val/Val genotypes with low long-term lycopene status.
    Conclusion: In this cohort of mainly white men, the MnSOD gene Ala16Val polymorphism was not associated with total or aggressive prostate cancer risk. However, men with the MnSOD Ala/Ala genotype who had low long-term lycopene status had a higher risk of aggressive prostate cancer compared with individuals with the other genotypes. These results are consistent with findings from earlier studies that reported when antioxidant status is low, the MnSOD Ala/Ala genotype may be associated with an increased risk of aggressive prostate cancer.
    MeSH term(s) Aged ; Carotenoids/blood ; Case-Control Studies ; Diet ; Genetic Predisposition to Disease ; Genotype ; Humans ; Male ; Polymorphism, Single Nucleotide ; Prostatic Neoplasms/blood ; Prostatic Neoplasms/genetics ; Prostatic Neoplasms/pathology ; Risk Factors ; Superoxide Dismutase/genetics ; Surveys and Questionnaires
    Chemical Substances Carotenoids (36-88-4) ; Superoxide Dismutase (EC 1.15.1.1)
    Language English
    Publishing date 2008-09-10
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 603134-1
    ISSN 1460-2180 ; 0143-3334
    ISSN (online) 1460-2180
    ISSN 0143-3334
    DOI 10.1093/carcin/bgn212
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Angiopoietin-like 4 (ANGPTL4) gene polymorphisms and risk of brain arteriovenous malformations.

    Mikhak, Bahar / Weinsheimer, Shantel / Pawlikowska, Ludmila / Poon, Annie / Kwok, Pui-Yan / Lawton, Michael T / Chen, Yongmei / Zaroff, Jonathan G / Sidney, Stephen / McCulloch, Charles E / Young, William L / Kim, Helen

    Cerebrovascular diseases (Basel, Switzerland)

    2011  Volume 31, Issue 4, Page(s) 338–345

    Abstract: Background: Brain arteriovenous malformations (BAVM) are high-flow vascular lesions prone to intracranial hemorrhage (ICH). Abnormal angiogenesis is a key characteristic of BAVM tissue. Angiopoietin-like 4 (ANGPTL4), a secreted glycoprotein, is thought ... ...

    Abstract Background: Brain arteriovenous malformations (BAVM) are high-flow vascular lesions prone to intracranial hemorrhage (ICH). Abnormal angiogenesis is a key characteristic of BAVM tissue. Angiopoietin-like 4 (ANGPTL4), a secreted glycoprotein, is thought to be involved in angiogenesis and required for proper postnatal blood vessel partitioning. We investigated whether common single nucleotide polymorphisms (SNPs) in ANGPTL4 were associated with risk of BAVM or ICH.
    Methods and results: We conducted a case-control study of 216 Caucasian BAVM cases and 246 healthy controls, and a secondary case-only analysis, comparing 83 ruptured (ICH) with 133 unruptured BAVM cases at presentation. Four tagSNPs in ANGPTL4 captured variation over a 10-kb region (rs2278236, rs1044250, rs11672433, and rs1808536) and were tested for association with BAVM or ICH. The minor allele (A) of rs11672433 (exon 6, Pro389Pro) was associated with an increased risk of BAVM (p = 0.006), which persisted after adjusting for multiple comparisons (p = 0.03). After adjustments for age and sex, carriers of the minor allele (A) remained at higher risk for BAVM compared to noncarriers (odds ratio, OR = 1.56; 95% confidence interval, CI = 1.01-2.41; p = 0.046) and risk of BAVM was increased with increasing copy of the minor A allele (OR = 1.49, 95% CI = 1.03-2.15; p(trend) = 0.03). Five common haplotypes (frequency >1%) were inferred; overall haplotype distribution differed between BAVM cases and controls (χ(2) = 12.2, d.f. = 4, p = 0.02). Neither SNPs (p > 0.05) nor haplotype distribution (χ(2) = 1.1, d.f. = 4, p = 0.89) were associated with risk of ICH among BAVM cases.
    Conclusion: A synonymous SNP in ANGPTL4 and haplotypes carrying it are associated with risk of BAVM but not with ICH presentation in BAVM cases.
    MeSH term(s) Adult ; Angiopoietin-like 4 Protein ; Angiopoietins/analysis ; Angiopoietins/genetics ; California ; Case-Control Studies ; Cerebral Angiography/methods ; Chi-Square Distribution ; European Continental Ancestry Group ; Female ; Gene Frequency ; Genetic Predisposition to Disease ; Haplotypes ; Humans ; Intracranial Arteriovenous Malformations/diagnosis ; Intracranial Arteriovenous Malformations/ethnology ; Intracranial Arteriovenous Malformations/genetics ; Intracranial Arteriovenous Malformations/metabolism ; Intracranial Hemorrhages/diagnosis ; Intracranial Hemorrhages/ethnology ; Intracranial Hemorrhages/genetics ; Intracranial Hemorrhages/metabolism ; Logistic Models ; Magnetic Resonance Angiography ; Male ; Middle Aged ; Odds Ratio ; Phenotype ; Polymorphism, Single Nucleotide ; Registries ; Risk Assessment ; Risk Factors ; Tomography, X-Ray Computed ; Young Adult
    Chemical Substances ANGPTL4 protein, human ; Angiopoietin-like 4 Protein ; Angiopoietins
    Language English
    Publishing date 2011-01-07
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 1069462-6
    ISSN 1421-9786 ; 1015-9770
    ISSN (online) 1421-9786
    ISSN 1015-9770
    DOI 10.1159/000322601
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article: Angiopoietin-Like 4 ; Gene Polymorphisms and Risk of Brain Arteriovenous Malformations

    Mikhak, Bahar / Weinsheimer, Shantel / Pawlikowska, Ludmila / Poon, Annie / Kwok, Pui-Yan / Lawton, Michael T. / Chen, Yongmei / Zaroff, Jonathan G. / Sidney, Stephen / McCulloch, Charles E. / Young, William L. / Kim, Helen

    Cerebrovascular Diseases

    2011  Volume 31, Issue 4, Page(s) 338–345

    Abstract: Background: Brain arteriovenous malformations (BAVM) are high-flow vascular lesions prone to intracranial hemorrhage (ICH). Abnormal angiogenesis is a key characteristic of BAVM tissue. Angiopoietin-like 4 (ANGPTL4), a secreted glycoprotein, is thought ... ...

    Institution Center for Cerebrovascular Research, Department of Anesthesia and Perioperative Care, Departments of Epidemiology and Biostatistics Neurological Surgery Neurology Institute for Human Genetics, and Cardiovascular Research Institute, University of California, San Francisco, Calif., and Division of Research, Kaiser Permanente Medical Care Program, Oakland, Calif., USA
    Abstract Background: Brain arteriovenous malformations (BAVM) are high-flow vascular lesions prone to intracranial hemorrhage (ICH). Abnormal angiogenesis is a key characteristic of BAVM tissue. Angiopoietin-like 4 (ANGPTL4), a secreted glycoprotein, is thought to be involved in angiogenesis and required for proper postnatal blood vessel partitioning. We investigated whether common single nucleotide polymorphisms (SNPs) in ANGPTL4 were associated with risk of BAVM or ICH. Methods and Results: We conducted a case-control study of 216 Caucasian BAVM cases and 246 healthy controls, and a secondary case-only analysis, comparing 83 ruptured (ICH) with 133 unruptured BAVM cases at presentation. Four tagSNPs in ANGPTL4 captured variation over a 10-kb region (rs2278236, rs1044250, rs11672433, and rs1808536) and were tested for association with BAVM or ICH. The minor allele (A) of rs11672433 (exon 6, Pro389Pro) was associated with an increased risk of BAVM (p = 0.006), which persisted after adjusting for multiple comparisons (p = 0.03). After adjustments for age and sex, carriers of the minor allele (A) remained at higher risk for BAVM compared to noncarriers (odds ratio, OR = 1.56; 95% confidence interval, CI = 1.01–2.41; p = 0.046) and risk of BAVM was increased with increasing copy of the minor A allele (OR = 1.49, 95% CI = 1.03–2.15; ptrend = 0.03). Five common haplotypes (frequency >1%) were inferred; overall haplotype distribution differed between BAVM cases and controls (χ2 = 12.2, d.f. = 4, p = 0.02). Neither SNPs (p > 0.05) nor haplotype distribution (χ2 = 1.1, d.f. = 4, p = 0.89) were associated with risk of ICH among BAVM cases. Conclusion: A synonymous SNP in ANGPTL4 and haplotypes carrying it are associated with risk of BAVM but not with ICH presentation in BAVM cases.
    Keywords Arteriovenous malformations ; Cerebrovascular disorders ; Epidemiology ; Genetics ; Intracranial hemorrhage
    Language English
    Publishing date 2011-01-07
    Publisher S. Karger AG
    Publishing place Basel, Switzerland
    Document type Article
    Note Original Paper
    ZDB-ID 1069462-6
    ISSN 1421-9786 ; 1015-9770
    ISSN (online) 1421-9786
    ISSN 1015-9770
    DOI 10.1159/000322601
    Database Karger publisher's database

    More links

    Kategorien

  8. Article: Phase I/II trial of an allogeneic cellular immunotherapy in hormone-naïve prostate cancer.

    Simons, Jonathan W / Carducci, Michael A / Mikhak, Bahar / Lim, Michael / Biedrzycki, Barbara / Borellini, Flavia / Clift, Shirley M / Hege, Kristen M / Ando, Dale G / Piantadosi, Steven / Mulligan, Richard / Nelson, William G

    Clinical cancer research : an official journal of the American Association for Cancer Research

    2006  Volume 12, Issue 11 Pt 1, Page(s) 3394–3401

    Abstract: Purpose: To determine the toxicity, immunologic, and clinical activity of immunotherapy with irradiated, allogeneic, prostate cancer cells expressing granulocyte macrophage colony-stimulating factor (GM-CSF) in patients with recurrent prostate cancer.!## ...

    Abstract Purpose: To determine the toxicity, immunologic, and clinical activity of immunotherapy with irradiated, allogeneic, prostate cancer cells expressing granulocyte macrophage colony-stimulating factor (GM-CSF) in patients with recurrent prostate cancer.
    Patients and methods: A single-institution phase I/II trial was done in hormone therapy-naïve patients with prostate-specific antigen (PSA) relapse following radical prostatectomy and absence of radiologic metastases. Treatments were administered weekly via intradermal injections of 1.2 x 10(8) GM-CSF gene-transduced, irradiated, cancer cells (6 x 10(7) LNCaP cells and 6 x 10(7) PC-3 cells) for 8 weeks.
    Results: Twenty-one patients were enrolled and treated. Toxicities included local injection-site reactions, pruritus, and flu-like symptoms. One patient had a partial PSA response of 7-month duration. At 20 weeks post first treatment, 16 of 21 (76%) patients showed a statistically significant decrease in PSA velocity (slope) compared with prevaccination (P < 0.001). Injection site biopsies showed intradermal infiltrates consisting of CD1a+ dendritic cells and CD68+ macrophages, similar to previous clinical trials using autologous GM-CSF-transduced cancer cells. Posttreatment, patients developed new oligoclonal antibodies reactive against at least five identified antigens present in LNCaP or PC-3 cells. A high-titer antibody response against a 250-kDa antigen expressed on normal prostate epithelial cells was induced in a patient with partial PSA remission; titers of this antibody decreased when treatment ended, and subsequent PSA relapse occurred.
    Conclusions: This non-patient-specific prostate cancer immunotherapy has a favorable safety profile and is immunologically active. Continued clinical investigation at higher doses and with longer boosting schedules is warranted.
    MeSH term(s) Aged ; Antigen-Antibody Reactions ; Antigens, Neoplasm/genetics ; Antigens, Neoplasm/immunology ; Cancer Vaccines/therapeutic use ; Cell Line, Tumor ; Granulocyte-Macrophage Colony-Stimulating Factor/biosynthesis ; Granulocyte-Macrophage Colony-Stimulating Factor/genetics ; Humans ; Immunotherapy, Active/methods ; Injections, Intradermal ; Male ; Middle Aged ; Neoplasm Recurrence, Local/immunology ; Neoplasm Recurrence, Local/surgery ; Neoplasm Recurrence, Local/therapy ; Neoplasm Staging ; Prostate-Specific Antigen/blood ; Prostatic Neoplasms/immunology ; Prostatic Neoplasms/surgery ; Prostatic Neoplasms/therapy ; Recurrence ; Risk Assessment ; Treatment Outcome
    Chemical Substances Antigens, Neoplasm ; Cancer Vaccines ; Granulocyte-Macrophage Colony-Stimulating Factor (83869-56-1) ; Prostate-Specific Antigen (EC 3.4.21.77)
    Language English
    Publishing date 2006-06-01
    Publishing country United States
    Document type Clinical Trial, Phase I ; Clinical Trial, Phase II ; Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1225457-5
    ISSN 1557-3265 ; 1078-0432
    ISSN (online) 1557-3265
    ISSN 1078-0432
    DOI 10.1158/1078-0432.CCR-06-0145
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top