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1.
J Gen Intern Med ; 38(1): 125-130, 2023 01.
Article in English | MEDLINE | ID: mdl-36217070

ABSTRACT

BACKGROUND: Providing patients with access to health information that can be obtained outside of an office visit is an important part of education, yet little is known about the effectiveness of outreach modalities to connect older adults to online educational tools. The objective was to identify the effectiveness and cost of outreach modalities providing online information about advance care planning (ACP) for older adults. METHODS: Six different outreach modalities were utilized to connect patients to online educational tools (ACP video decision aids). Participants were 13,582 patients aged 65 and older of 185 primary care providers with appointments over a 30-month period within a large health system in the greater New York City area. Main outcome measures were number of online video views and costs per outreach for each modality. KEY RESULTS: There were 1150 video views for 21,407 remote outreach events. Text messages, sent to the largest volume of patients (8869), had the highest outcome rate (9.6%) and were the most economical ($0.09). Characterization of phone calls demonstrated 21.7% engagement in the topic of ACP but resulted in minimal video views (<1%) and incurred the highest cost per outreach ($2.88). In-office handouts had negligible results (<1%). CONCLUSIONS: Text was the most cost-effective modality to connect older adults to an online educational tool in this pragmatic trial, though overall efficacy of all modalities was low.


Subject(s)
Advance Care Planning , Telecommunications , Aged , Humans , New York City , Primary Health Care
3.
Eur J Gynaecol Oncol ; 37(2): 199-203, 2016.
Article in English | MEDLINE | ID: mdl-27172745

ABSTRACT

PURPOSE OF INVESTIGATION: A retrospective study to evaluate six cycles of cisplatin 40 mg/m2 on day 1 and ifosfamide 1,200 mg/m2 daily on days 1 to 4 with Mesna every four weeks as first line treatment for 29 patients with a diagnosis of uterine carcinosarcoma. MATERIALS AND METHODS: A total of 23 of 29 patients received high dose rate intracavitary vaginal cuff brachytherapy (VCBT) with two fractions of seven Gy each. Median age was 65 years (range 40-82); 13 (44.8%) had Stage I disease, three (10.3%) had Stage II, eight (27.6%) had Stage III, and five (17.2%) patients had Stage IV disease. RESULTS: Most common toxicities were anemia grade 1 (35%)/grade 2 (45%), and neutropenia grade 3 (17%)/grade 4 (6.9%). Eleven dose modifications, four treatment discontinuations, and one patient withdrawal occurred. At a median follow up of 45 months (range 9 to 144), Progression free survival (PFS) was 20% and overall survival (OS) was 40% for Stage IV, PFS 75% and OS 62.5% for Stage III, compared to a PFS 75% and OS 72.2% for Stages I-II. Median OS for the entire group was 12.43 years (95% CI 3.69 to inf); for Stage I-III 12.4 years (6.1 to inf), and for Stage IV 15.6 months (95% CI 9.4 to inf). CONCLUSIONS: Cisplatin and ifosfamide chemotherapy with VCBT was well tolerated and has promising activity in uterine carcinosarcoma.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Brachytherapy/methods , Carcinosarcoma/therapy , Uterine Neoplasms/therapy , Adult , Aged , Aged, 80 and over , Anemia/chemically induced , Carcinosarcoma/pathology , Chemoradiotherapy , Cisplatin/administration & dosage , Disease-Free Survival , Female , Humans , Ifosfamide/administration & dosage , Mesna/therapeutic use , Middle Aged , Neoplasm Staging , Neutropenia/chemically induced , Protective Agents/therapeutic use , Retrospective Studies , Treatment Outcome , Uterine Neoplasms/pathology
4.
Br J Cancer ; 111(9): 1750-6, 2014 Oct 28.
Article in English | MEDLINE | ID: mdl-25268372

ABSTRACT

BACKGROUND: Uterine serous carcinomas (USCs) are an aggressive form of uterine cancer that may rely on HER2/neu amplification as a driver of proliferation. The objective of this paper is to assess the sensitivity of USC cell lines with and without HER2/neu gene amplification to afatinib, an irreversible ErbB tyrosine kinase inhibitor, and to test the efficacy of afatinib in the treatment of HER2-amplified USC xenografts. METHODS: Eight of fifteen primary USC cell lines (four with HER2 amplification and four without) demonstrating similar in vitro growth rates were treated with scalar concentrations of afatinib. Effects on cell growth, signalling and cell cycle distribution were determined by flow cytometry assays. Mice harbouring xenografts of HER2/neu-amplified USC were treated with afatinib by gavage to determine the effect on tumour growth and overall survival. RESULTS: Primary chemotherapy-resistant USC cell lines harbouring HER2/neu gene amplification were exquisitely sensitive to afatinib exposure (mean ± s.e.m. IC50=0.0056 ± 0.0006 µM) and significantly more sensitive than HER2/neu-non-amplified USC cell lines (mean ± s.e.m. IC50=0.563 ± 0.092 µM, P<0.0001). Afatinib exposure resulted in abrogation of cell survival, inhibition of HER2/neu autophosphorylation and S6 transcription factor phosphorylation in HER2/neu overexpressing USC and inhibited the growth of HER2-amplified tumour xenografts improving overall survival (P=0.0017). CONCLUSIONS: Afatinib may be highly effective against HER2/neu-amplified chemotherapy-resistant USC. The investigation of afatinib in patients harbouring HER2/neu-amplified USC is warranted.


Subject(s)
Cystadenocarcinoma, Serous/drug therapy , Endometrial Neoplasms/drug therapy , Quinazolines/pharmacology , Receptor, ErbB-2/metabolism , Uterine Neoplasms/drug therapy , Adult , Afatinib , Aged , Aged, 80 and over , Animals , Apoptosis/drug effects , Cell Cycle/drug effects , Cell Proliferation/drug effects , Cystadenocarcinoma, Serous/metabolism , Cystadenocarcinoma, Serous/pathology , Endometrial Neoplasms/metabolism , Endometrial Neoplasms/pathology , Female , Humans , Immunoenzyme Techniques , In Situ Hybridization, Fluorescence , In Vitro Techniques , Mice , Mice, SCID , Middle Aged , Phosphorylation/drug effects , Receptor, ErbB-2/genetics , Signal Transduction/drug effects , Tumor Cells, Cultured , Uterine Neoplasms/metabolism , Uterine Neoplasms/pathology , Xenograft Model Antitumor Assays
6.
Neth Heart J ; 22(4): 160-6, 2014 Apr.
Article in English | MEDLINE | ID: mdl-24522951

ABSTRACT

INTRODUCTION: Treating therapy-resistant patients with inherited arrhythmia syndromes can be difficult and left cardiac sympathetic denervation (LCSD) might be a viable alternative treatment option. We provide an overview of the indications and outcomes of LCSD in patients with inherited arrhythmia syndromes in the only tertiary referral centre in the Netherlands where LCSD is conducted in these patients. METHODS: This was a retrospective study, including all patients with inherited arrhythmia syndromes who underwent LCSD in our institution between 2005 and 2013. LCSD involved ablation of the lower part of the left stellate ganglion and the first four thoracic ganglia. RESULTS: Seventeen patients, 12 long-QT syndrome (LQTS) patients (71 %) and 5 catecholaminergic polymorphic ventricular tachycardia (CPVT) patients (29 %), underwent LCSD. Most patients (94 %) were referred because of therapy-refractory cardiac events. In 87 % the annual cardiac event rate decreased. However, after 2 years the probability of complete cardiac event-free survival was 59 % in LQTS and 60 % in CPVT patients. Two patients (12 %) had major non-reversible LCSD-related complications: one patient suffered from a Harlequin face post-procedure and one severely affected LQT8 patient died the day after LCSD due to complications secondary to an arrhythmic storm during the procedure. CONCLUSION: LSCD for inherited arrhythmia syndromes, which is applied on a relatively small scale in the Netherlands, reduced the cardiac event rate in 87 % of the high-risk patients who had therapy-refractory cardiac events, while the rate of major complications was low. Therefore, LSCD seems a viable treatment for patients with inherited arrhythmia syndromes without other options for therapy.

7.
Br J Cancer ; 108(5): 1021-6, 2013 Mar 19.
Article in English | MEDLINE | ID: mdl-23403817

ABSTRACT

BACKGROUND: This open-label, multicentre, phase 2 trial evaluated the efficacy and tolerability of the mammalian target of rapamycin inhibitor ridaforolimus in women with advanced endometrial cancer. METHODS: Women with measurable recurrent or persistent endometrial cancer and documented disease progression were treated with ridaforolimus 12.5 mg intravenously once daily for 5 consecutive days every 2 weeks in a 4-week cycle. The primary end point was clinical benefit response, defined as an objective response or prolonged stable disease of 16 weeks or more. RESULTS: In all, 45 patients were treated with single-agent ridaforolimus. Clinical benefit was achieved by 13 patients (29%), including 5 (11%) with confirmed partial responses and 8 (18%) with prolonged stable disease. All patients with clinical benefit response received ridaforolimus for more than 4 months. In this heavily pretreated population, the 6-month progression-free survival was 18%. Ridaforolimus was generally well tolerated: adverse events were predictable and manageable, consistent with prior studies in other malignancies. Overall, the most common adverse events were diarrhoea (58%) and mouth sores (56%); most common grade 3 or higher adverse events were anaemia (27%) and hyperglycaemia (11%). CONCLUSION: Single-agent ridaforolimus has antitumor activity and acceptable tolerability in advanced endometrial cancer patients. Further clinical evaluation of ridaforolimus is warranted.


Subject(s)
Antineoplastic Agents, Alkylating/therapeutic use , Endometrial Neoplasms/drug therapy , Sirolimus/analogs & derivatives , TOR Serine-Threonine Kinases/antagonists & inhibitors , Adult , Aged , Aged, 80 and over , Antineoplastic Agents, Alkylating/administration & dosage , Antineoplastic Agents, Alkylating/adverse effects , Disease-Free Survival , Drug Administration Schedule , Endometrial Neoplasms/pathology , Female , Humans , Middle Aged , Retreatment , Sirolimus/administration & dosage , Sirolimus/adverse effects , Sirolimus/therapeutic use
8.
Br J Cancer ; 109(2): 462-71, 2013 Jul 23.
Article in English | MEDLINE | ID: mdl-23807163

ABSTRACT

BACKGROUND: We studied the genetic fingerprints of ovarian cancer and validated the potential of Mammaglobin b (SCGB2A1), one of the top differentially expressed genes found in our analysis, as a novel ovarian tumour rejection antigen. METHODS: We profiled 70 ovarian carcinomas including 24 serous (OSPC), 15 clear-cell (CC), 24 endometrioid (EAC) and 7 poorly differentiated tumours, and 14 normal human ovarian surface epithelial (HOSE) control cell lines using the Human HG-U133 Plus 2.0 chip (Affymetrix). Quantitative real-time PCR and immunohistochemistry staining techniques were used to validate microarray data at RNA and protein levels for SCGB2A1. Full-length human-recombinant SCGB2A1 was used to pulse monocyte-derived dendritic cells (DCs) to stimulate autologous SCGB2A1-specific cytotoxic T-lymphocyte (CTL) responses against chemo-naive and chemo-resistant autologous ovarian tumours. RESULTS: Gene expression profiling identified SCGB2A1 as a top differentially expressed gene in all histological ovarian cancer types tested. The CD8+ CTL populations generated against SCGB2A1 were able to consistently induce lysis of autologous primary (chemo-naive) and metastatic/recurrent (chemo-resistant) target tumour cells expressing SCGB2A1, whereas autologous HLA-identical noncancerous cells were not lysed. Cytotoxicity against autologous tumour cells was significantly inhibited by anti-HLA-class I (W6/32) monoclonal antibody. Intracellular cytokine expression measured by flow cytometry showed a striking type 1 cytokine profile (i.e., high IFN-γ secretion) in SCGB2A1-specific CTLs. CONCLUSION: SCGB2A1 is a top differentially expressed gene in all major histological types of ovarian cancers and may represent a novel and attractive target for the immunotherapy of patients harbouring recurrent disease resistant to chemotherapy.


Subject(s)
Antigens, Neoplasm/metabolism , Biomarkers, Tumor/metabolism , Mammaglobin B/metabolism , Ovarian Neoplasms/metabolism , Adult , Aged , Aged, 80 and over , Antigens, Neoplasm/genetics , Biomarkers, Tumor/genetics , Female , Gene Expression Regulation, Neoplastic , Humans , Immunotherapy , Mammaglobin B/genetics , Microarray Analysis , Middle Aged , Ovarian Neoplasms/pathology , Ovarian Neoplasms/therapy , Transcriptome , Validation Studies as Topic
9.
Nat Genet ; 8(2): 141-7, 1994 Oct.
Article in English | MEDLINE | ID: mdl-7842012

ABSTRACT

Cardiac arrhythmias cause sudden death in 300,000 United States citizens every year. In this study, we describe two new loci for an inherited cardiac arrhythmia, long QT syndrome (LQT). In 1991 we reported linkage of LQT to chromosome 11p15.5. In this study we demonstrate further linkage to D7S483 in nine families with a combined lod score of 19.41 and to D3S1100 in three families with a combined score of 6.72. These findings localize major LQT genes to chromosomes 7q35-36 and 3p21-24, respectively. Linkage to any known locus was excluded in three families indicating that additional heterogeneity exists. Proteins encoded by different LQT genes may interact to modulate cardiac repolarization and arrhythmia risk.


Subject(s)
Chromosomes, Human, Pair 3 , Chromosomes, Human, Pair 7 , Long QT Syndrome/genetics , Base Sequence , Chromosome Mapping , Chromosomes, Human, Pair 11 , Female , Genetic Heterogeneity , Haplotypes/genetics , Humans , Lod Score , Male , Molecular Sequence Data , Pedigree , Recombination, Genetic
10.
Nat Genet ; 12(1): 17-23, 1996 Jan.
Article in English | MEDLINE | ID: mdl-8528244

ABSTRACT

Genetic factors contribute to the risk of sudden death from cardiac arrhythmias. Here, positional cloning methods establish KVLQT1 as the chromosome 11-linked LQT1 gene responsible for the most common inherited cardiac arrhythmia. KVLQT1 is strongly expressed in the heart and encodes a protein with structural features of a voltage-gated potassium channel. KVLQT1 mutations are present in affected members of 16 arrhythmia families, including one intragenic deletion and ten different missense mutations. These data define KVLQT1 as a novel cardiac potassium channel gene and show that mutations in this gene cause susceptibility to ventricular tachyarrhythmias and sudden death.


Subject(s)
Long QT Syndrome/genetics , Potassium Channels/genetics , Amino Acid Sequence , Base Sequence , Chromosomes, Human, Pair 11 , Cloning, Molecular , Female , Genetic Linkage , Humans , Male , Molecular Sequence Data , Pedigree , Point Mutation , Polymorphism, Single-Stranded Conformational , Sequence Alignment , Sequence Deletion , Sequence Homology, Amino Acid
11.
Neth Heart J ; 21(2): 82-4, 2013 Feb.
Article in English | MEDLINE | ID: mdl-23250848

ABSTRACT

A significant series of experimental and clinical studies have demonstrated the close association between reduced vagal reflexes (baroreflex sensitivity, BRS) and increased sudden and non-sudden cardiovascular mortality. Subsequently, evidence was provided that, also among chronic heart failure (HF) patients, depressed BRS is associated with a poorer outcome. At the same time, the encouraging results with experimental and clinical attempts to increase cardiac vagal activity led to a few experimental studies with vagal stimulation (VS) in different models for HF. We first performed a pilot study for VS in HF patients, and then in 2011 we reported the results of a small size multicentre clinical trial. The 6-month and 1-year results are encouraging for feasibility, safety and appear to have a favourable clinical effect. An ongoing large clinical trial will provide a definitive assessment of the efficacy and usefulness of chronic VS in HF patients.

12.
Br J Cancer ; 106(9): 1543-50, 2012 Apr 24.
Article in English | MEDLINE | ID: mdl-22531721

ABSTRACT

BACKGROUND: We evaluated the expression of CD46, CD55 and CD59 membrane-bound complement-regulatory proteins (mCRPs) in primary uterine serous carcinoma (USC) and the ability of small interfering RNA (siRNA) against these mCRPs to sensitise USC to complement-dependent cytotoxicity (CDC) and antibody (trastuzumab)-dependent cellular cytotoxicity (ADCC) in vitro. METHODS: Membrane-bound complement-regulatory proteins expression was evaluated using real-time PCR (RT-PCR) and flow cytometry, whereas Her2/neu expression and c-erbB2 gene amplification were assessed using immunohistochemistry, flow cytometry and fluorescent in-situ hybridisation. The biological effect of siRNA-mediated knockdown of mCRPs on HER2/neu-overexpressing USC cell lines was evaluated in CDC and ADCC 4-h chromium-release assays. RESULTS: High expression of mCRPs was found in USC cell lines when compared with normal endometrial cells (P<0.05). RT-PCR and FACS analyses demonstrated that anti-mCRP siRNAs were effective in reducing CD46, CD55 and CD59 expression on USC (P<0.05). Baseline complement-dependent cytotoxicity (CDC) against USC cell lines was low (mean ± s.e.m.=6.8 ± 0.9%) but significantly increased upon CD55 and CD59 knockdown (11.6 ± 0.8% and 10.7 ± 0.9%, respectively, P<0.05). Importantly, in the absence of complement, both CD55 and CD59, but not CD46, knockdowns significantly augmented ADCC against USC overexpressing Her2/neu. CONCLUSION: Uterine serous carcinoma express high levels of the mCRPs CD46, CD55 and CD59. Small interfering RNA inhibition of CD55 and CD59, but not CD46, sensitises USC to both CDC and ADCC in vitro, and if specifically targeted to tumour cells, may significantly increase trastuzumab-mediated therapeutic effect in vivo.


Subject(s)
Antibodies, Monoclonal, Humanized/therapeutic use , Antibody-Dependent Cell Cytotoxicity , CD55 Antigens/metabolism , CD59 Antigens/metabolism , Cystadenocarcinoma, Serous/metabolism , Receptor, ErbB-2/metabolism , Uterine Cervical Neoplasms/metabolism , Aged , Aged, 80 and over , Antibodies, Monoclonal/immunology , Antibodies, Monoclonal/metabolism , CD55 Antigens/chemistry , CD55 Antigens/genetics , CD59 Antigens/chemistry , CD59 Antigens/genetics , Complement Activation , Cystadenocarcinoma, Serous/genetics , Cystadenocarcinoma, Serous/immunology , Cytotoxicity, Immunologic , Down-Regulation , Female , Flow Cytometry , Humans , In Situ Hybridization, Fluorescence , Membrane Cofactor Protein/genetics , Membrane Cofactor Protein/metabolism , Middle Aged , Prognosis , RNA, Small Interfering/genetics , Real-Time Polymerase Chain Reaction , Receptor, ErbB-2/genetics , Trastuzumab , Uterine Cervical Neoplasms/genetics , Uterine Cervical Neoplasms/immunology
13.
Br J Cancer ; 105(8): 1176-82, 2011 Oct 11.
Article in English | MEDLINE | ID: mdl-21915118

ABSTRACT

BACKGROUND: We evaluated shedding of epidermal growth factor type II receptor (Her2/neu) extracellular domain (ECD) in primary uterine serous carcinoma (USC) cell lines and in the serum of USC patients and its biological effects in experiments of trastuzumab-induced cytotoxicity in vitro. METHODS: Her2/neu expression was evaluated by immunohistochemistry (IHC), real-time PCR and flow cytometry, while c-erbB2 gene amplification was assessed using fluorescent in situ hybridisation (FISH). Her2/neu ECD levels in the supernatants of USC cell lines and in the serum of 38 USC patients and 19 controls were tested using ELISA. The biologic effect of Her2/neu ECD on trastuzumab-induced antibody-dependent cell-mediated cytotoxicity (ADCC) was evaluated in 5-h chromium-release assays. RESULTS: Five out of ten USC cell lines overexpressed Her2/neu by IHC and showed amplification of the c-erbB2 gene. High levels of Her2/neu ECD were found in supernatants of all FISH-positive tumours. In contrast, FISH-negative USC was negative for Her2/neu ECD shedding. Serum Her2/neu ECD levels in patients harbouring 3+Her2/neu tumours were higher than those found in healthy women (P=0.02) or USC patients with 2+ or 1+/negative Her2/neu expression (P=0.02). In cytotoxicity experiments, trastuzumab-mediated ADCC was significantly decreased by the addition of Her2/neu ECD-containing supernatants (P=0.01). CONCLUSION: FISH-positive c-erbB2 USC cell lines shed high levels of Her2/neu ECD. High levels of Her2/neu ECD in USC patients may reduce trastuzumab-mediated ADCC in vitro and potentially neutralise its therapeutic effect in vivo.


Subject(s)
Antibodies, Monoclonal, Humanized/therapeutic use , Antineoplastic Agents/therapeutic use , Genes, erbB-2 , Uterine Neoplasms/metabolism , Aged , Aged, 80 and over , Antibody-Dependent Cell Cytotoxicity , Culture Media, Conditioned , Female , Flow Cytometry , Humans , Immunohistochemistry , Immunotherapy , In Situ Hybridization, Fluorescence , Middle Aged , Real-Time Polymerase Chain Reaction , Trastuzumab , Uterine Neoplasms/genetics , Uterine Neoplasms/pathology , Uterine Neoplasms/therapy
14.
Br J Cancer ; 103(6): 812-9, 2010 Sep 07.
Article in English | MEDLINE | ID: mdl-20700124

ABSTRACT

BACKGROUND: Uterine serous papillary adenocarcinoma (USPC) is a highly aggressive variant of endometrial cancer. Human immuno-conjugate molecule (hI-con1) is an antibody-like molecule targeted against tissue factor (TF), composed of two human Factor VII (fVII) as the targeting domain, fused to human immunoglobulin (Ig) G1 Fc as an effector domain. We evaluated hI-con1 potential activity against primary chemotherapy-resistant USPC cell lines expressing different levels of TF. METHODS: A total of 16 formalin-fixed, paraffin-embedded USPC samples were evaluated by immunohistochemistry (IHC) for TF expression. Six primary USPC cell lines, half of which overexpress the epidermal growth factor type II (HER2/neu) receptor at 3+ levels, were assessed by flow cytometry and real-time PCR for TF expression. Sensitivity to hI-con1-dependent cell-mediated cytotoxicity (IDCC) was evaluated in 5-hour-chromium release assays. Finally, to investigate the effect of interleukin-2 (IL-2) on IDCC, 5-h (51)Cr assays were also conducted in the presence of low doses of IL-2 (i.e., 50-100 IU ml(-1)). RESULTS: Cytoplasmic and/or membrane TF expression was observed in all 16 (100%) USPC samples tested by IHC, but not in normal endometrium. High expression of TF was found in 50% (three out of six) of the USPC cell lines tested by real-time PCR and flow cytometry when compared with normal endometrial cells (NECs; P<0.001). Uterine serous papillary adenocarcinoma cell lines overexpressing TF, regardless of their high or low HER2/neu expression, were highly sensitive to IDCC (mean killing+/-s.d., 65.6+/-3.7%, range 57.5-77.0%, P<0.001), although negligible cytotoxicity against USPC was seen in the absence of hI-con1 or in the presence of Rituximab control antibody. The addition of low doses of IL-2 further increased the cytotoxic effect induced by hI-con1 against chemotherapy-resistant USPC. CONCLUSION: hI-con1 induces strong cytotoxicity against primary chemotherapy-resistant USPC cell lines overexpressing TF. The hI-con1 may represent a novel therapeutic agent for the treatment of patients harbouring advanced, recurrent and/or metastatic USPC refractory to standard treatment modalities.


Subject(s)
Carcinoma, Papillary/therapy , Factor VII/therapeutic use , Immunotherapy , Recombinant Fusion Proteins/therapeutic use , Uterine Neoplasms/therapy , Carcinoma, Papillary/immunology , Carcinoma, Papillary/pathology , Cell Line, Tumor , Female , Humans , Immunohistochemistry , Killer Cells, Natural/immunology , Polymerase Chain Reaction , Uterine Neoplasms/immunology , Uterine Neoplasms/pathology
15.
Br J Cancer ; 102(1): 134-43, 2010 Jan 05.
Article in English | MEDLINE | ID: mdl-19920829

ABSTRACT

BACKGROUND: Uterine serous papillary adenocarcinoma (USPC) is a rare but highly aggressive variant of endometrial cancer. Pertuzumab is a new humanised monoclonal antibody (mAb) targeting the epidermal growth factor type II receptor (HER2/neu). We evaluated pertuzumab activity separately or in combination with trastuzumab against primary USPC cell lines expressing different levels of HER2/neu. METHODS: Six USPC cell lines were assessed by immunohistochemistry (IHC), flow cytometry, and real-time PCR for HER2/neu expression. c-erbB2 gene amplification was evaluated using fluorescent in situ hybridisation (FISH). Sensitivity to pertuzumab and trastuzumab-induced antibody-dependent cell-mediated cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC) was evaluated in 5 h chromium release assays. Pertuzumab cytostatic activity was evaluated using proliferation-based assays. RESULTS: Three USPC cell lines stained heavily for HER2/neu by IHC and showed amplification of the c-erbB2 gene by FISH. The remaining FISH-negative USPCs expressed HER2/neu at 0/1+ levels. In cytotoxicity experiments against USPC with a high HER2/neu expression, pertuzumab and trastuzumab were similarly effective in inducing strong ADCC. The addition of complement-containing plasma and interleukin-2 increased the cytotoxic effect induced by both mAbs. In low HER2/neu USPC expressors, trastuzumab was more potent than pertuzumab in inducing ADCC. Importantly, in this setting, the combination of pertuzumab with trastuzumab significantly increased the ADCC effect induced by trastuzumab alone (P=0.02). Finally, pertuzumab induced a significant inhibition in the proliferation of all USPC cell lines tested, regardless of their HER-2/neu expression. CONCLUSION: Pertuzumab and trastuzumab induce equally strong ADCC and CDC in FISH-positive USPC cell lines. Pertuzumab significantly increases tratuzumab-induced ADCC against USPC with a low HER2/neu expression and may represent a new therapeutic agent in patients harbouring advanced/recurrent and/or refractory USPC.


Subject(s)
Adenocarcinoma, Papillary/pathology , Antibodies, Monoclonal/pharmacology , Uterine Neoplasms/pathology , Aged , Antibodies, Monoclonal, Humanized , Antibody-Dependent Cell Cytotoxicity/drug effects , Cell Line, Tumor/drug effects , Complement System Proteins/immunology , Cytotoxicity, Immunologic , Dimerization , Drug Screening Assays, Antitumor , Drug Synergism , Female , Humans , Immunoglobulin G/immunology , In Vitro Techniques , Interleukin-2/pharmacology , Killer Cells, Natural/immunology , Lymphocytes/immunology , Middle Aged , Receptor, ErbB-2/biosynthesis , Receptor, ErbB-2/genetics , Receptor, ErbB-2/immunology , Signal Transduction/drug effects , Trastuzumab
16.
Rozhl Chir ; 89(6): 331-5, 2010 Jul.
Article in Sk | MEDLINE | ID: mdl-20731308

ABSTRACT

Authors evaluated a set of 1182 patients who underwent a surgery for thyroid disease at two workplaces--1st Surgery Clinic of L. Pasteur Teaching Hospital of Kosice and ENT Department of East-Slovak Oncology Institute, a. s. of Kosice during 5 year period from the point of view of Medullary Thyroid Carcinoma. Of the given number, 9 suffered a confirmed diagnosis of Medullary Thyroid Carcinoma. Incidence and treatment results conform to available publications. The most important elements for successful treatment are considered the early diagnosis and sufficient surgical treatment. The early diagnosis is in hands of GPs and endocrinologists and is the most important regarding the success of treatment. It is useful to direct the surgical treatment into Centres where--regarding rare occurrence, seriousness of disease and specific treatment--the optimum result may be achieved.


Subject(s)
Thyroid Neoplasms , Adult , Aged , Carcinoma, Medullary/diagnosis , Carcinoma, Medullary/surgery , Female , Humans , Male , Middle Aged , Thyroid Neoplasms/diagnosis , Thyroid Neoplasms/surgery
17.
Br J Cancer ; 101(2): 335-41, 2009 Jul 21.
Article in English | MEDLINE | ID: mdl-19536090

ABSTRACT

BACKGROUND: Uterine serous papillary carcinoma (USPC) is a biologically aggressive variant of endometrial cancer. We investigated the expression of Serum Amyloid A (SAA) and evaluated its potential as a serum biomarker in USPC patients. METHODS: SAA gene and protein expression levels were evaluated in USPC and normal endometrial tissues (NEC) by real-time PCR, immunohistochemistry (IHC), flow cytometry and by a sensitive bead-based immunoassay. SAA concentration in 123 serum samples from 51 healthy women, 42 women with benign diseases, and 30 USPC patients were also studied. RESULTS: SAA gene expression levels were significantly higher in USPC when compared with NEC (mean copy number by RT-PCR=162 vs 2.21; P=0.0002). IHC revealed diffuse cytoplasmic SAA protein staining in USPC tissues. High intracellular levels of SAA were identified in primary USPC cell lines evaluated by flow cytometry and SAA was found to be actively secreted in vitro. SAA concentrations (mug ml(-1)) had a median (95% CIs) of 6.0 (4.0-8.9) in normal healthy females and 6.0 (4.2-8.1) in patients with benign disease (P=0.92). In contrast, SAA values in the serum of USPC patients had a median (95% CI) of 15.6 (9.2-56.2), significantly higher than those in the healthy group (P=0.0005) and benign group (P=0.0006). Receiver operating characteristics (ROC) analysis of serum SAA to classify advanced- and early-stage USPC yielded an area under the ROC curve of 0.837 (P=0.0024). CONCLUSION: SAA is not only a liver-secreted protein but is also a USPC cell product. SAA may represent a novel biomarker for USPC to assist in staging patients preoperatively, and to monitor early-disease recurrence and response to therapy.


Subject(s)
Biomarkers, Tumor/blood , Carcinoma, Papillary/blood , Cystadenocarcinoma, Serous/blood , Serum Amyloid A Protein/biosynthesis , Uterine Neoplasms/blood , Biomarkers, Tumor/biosynthesis , Biomarkers, Tumor/genetics , Carcinoma, Papillary/genetics , Carcinoma, Papillary/pathology , Cystadenocarcinoma, Serous/genetics , Cystadenocarcinoma, Serous/pathology , Female , Flow Cytometry , Humans , Immunohistochemistry , Middle Aged , Neoplasm Staging , RNA, Messenger/biosynthesis , RNA, Messenger/genetics , Reverse Transcriptase Polymerase Chain Reaction , Serum Amyloid A Protein/genetics , Tumor Cells, Cultured , Uterine Neoplasms/genetics , Uterine Neoplasms/pathology
18.
Science ; 165(3889): 180-4, 1969 Jul 11.
Article in English | MEDLINE | ID: mdl-17834741

ABSTRACT

We measured the emission of water vapor at a wavelength of 1.35 centimeters from nine sources with the 120-foot (36.5-meter) Haystack antenna. Eight sources lie within 30 seconds of arc of the hydroxyl sources of 18 centimeters but not all hydroxyl sources produced detectable emission of water vapor. All sources are smaller than 30 seconds of arc in angular diameter, but we resolved at least three separate sources in the Orion Nebula. We do not find that the known hyperfine components are present with the equilibrium intensity distribution.

19.
Neuron ; 19(2): 269-81, 1997 Aug.
Article in English | MEDLINE | ID: mdl-9292718

ABSTRACT

While target-derived neurotrophins are required for the survival of developing neurons in the PNS, the functions of neurotrophins in the CNS are unclear. Mice with a targeted gene deletion of brain-derived neurotrophic factor (BDNF) exhibit a wide-based gait. Consistent with this behavioral evidence of cerebellar dysfunction, there is increased death of granule cells, stunted growth of Purkinje cell dendrites, impaired formation of horizontal layers, and defects in the rostral-caudal foliation pattern. These abnormalities are accompanied by decreased Trk activation in granule and Purkinje cells of mutant animals, indicating that both cell types are direct targets for BDNF. These data suggest that BDNF acts as an anterograde or an autocrine-paracrine factor to regulate survival and morphologic differentiation of developing CNS neurons, and thereby affects neural patterning.


Subject(s)
Brain-Derived Neurotrophic Factor/physiology , Central Nervous System/growth & development , Cerebellum/growth & development , Mutation/genetics , Animals , Brain-Derived Neurotrophic Factor/genetics , Cerebellum/metabolism , Immunohistochemistry , Mice , Mice, Mutant Strains
20.
Eur Respir J ; 32(1): 180-8, 2008 Jul.
Article in English | MEDLINE | ID: mdl-18321936

ABSTRACT

Inhaled human insulin (Exubera (human insulin of rDNA origin) Inhalation Powder) causes small, early and reversible changes in pulmonary function in subjects with diabetes mellitus. The present study assessed whether changes occur in cellular and soluble constituents of airway lining fluid consistent with inflammation as a possible cause for Exubera-associated lung function alterations. Two 31-week, open-label, sequential design phase 2 studies were conducted, one with 20 subjects with type 1 and one with 24 subjects with type 2 diabetes. After run-in, all subjects received subcutaneous insulin for 12 weeks, followed after 1 week by 12 weeks of Exubera. Bronchoalveolar lavage fluid cell counts and protein constituents were determined at baseline, after 12 weeks of subcutaneous insulin and after 12 weeks of Exubera. Baseline cellular and soluble constituents of lavage fluid were similar to those reported for nondiabetic adults. Exubera produced no consistent clinically or statistically significant changes in total or differential lavage fluid cell counts or protein concentrations, even though Exubera-associated changes in pulmonary function are known to be fully manifest within 12 weeks. Therefore, 12 weeks of Exubera treatment is not associated with evidence of pulmonary inflammation. The treatment effects on lung function observed in Exubera trials are not caused by lung inflammation.


Subject(s)
Bronchoalveolar Lavage Fluid , Diabetes Mellitus, Type 1/drug therapy , Diabetes Mellitus, Type 2/drug therapy , Hypoglycemic Agents/pharmacology , Insulin/pharmacology , Administration, Inhalation , Adolescent , Adult , Bronchoalveolar Lavage Fluid/chemistry , Bronchoalveolar Lavage Fluid/cytology , Bronchoscopy , Female , Humans , Male , Middle Aged , Respiratory Function Tests
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