Abstract:
:The cell proliferation activity of sixteen childhood primitive neuroectodermal tumors (PNETs) was observed immunocytochemically, to determine the cell kinetics and cell proliferation activity of these relatively undifferentiated, malignant brain tumors. Two mouse anti-human monoclonal antibodies (MoABs) were employed for the detection of the nuclear antigen (Ki-67) present during proliferation in frozen sections and proliferating cell nuclear antigen (PCNA) expression in formalin fixed, paraffin embedded tissue sections. A sensitive four step, indirect, streptavidin-biotin, alkaline phosphatase (AP) conjugated, immunocytochemical experimental technique, was used. The anti-Ki-67 MoAB which binds to a special nuclear antigen, identified its expression only in proliferating cells. This nuclear antigen was detectable during the whole mitotic cycle of all malignant and fast proliferating cells, only absent between and during phases G0 (resting phase) and the first gap phase (G1). The mean labeling index (MLI) was defined as the percentage of Ki-67 and PCNA antigen positive cells of the total number counted. The MLI for the PNETs ranged between 1.4% and 11.6%, with a mean MLI of 6.2% for Ki-67; and between 3.2% and 16.8%, with a mean of 9.74% for PCNA. All observed PNETs demonstrated heterogeneous nuclear stainings, but the highest MLIs were found among the poorly differentiated classic medulloblastomas (over 30% for the Ki-67 antigen and 46% for PCNA). MLIs were low in 5/13 PNETs (under 4% for antigen Ki-67 and 9.4% for PCNA) and in this group we defined our lowest (1.4%) MLI, suggesting the presence of in vivo neuritogenesis of these undifferentiated, embryonal tumors. MLIs in 6/13 PNETs were intermediate in magnitude. The MLIs were higher in two PNETs with clear cellular differentiation towards an ependymal (10.4%) and melanocytic (8.8%) direction. Formation of astrocytes within the tumor mass did not affect the intermediate character of the MLI (7.8%). The prognosis of every intracranial tumor is obviously correlated with its proliferation activity and cell kinetics. The clinical significance of these parameters is great since they provide direct information concerning the growth characteristics of an intracranial tumor.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Bodey B,Bodey B Jr,Gröger AM,Siegel SE,Kaiser HEsubject
Has Abstractpub_date
1997-01-01 00:00:00pages
189-96issue
1Aeissn
0250-7005issn
1791-7530journal_volume
17pub_type
杂志文章abstract::Hypoxia, a condition of reduced oxygen concentration, is observed in many physiological and pathophysiological states. However, there is rather limited information regarding hypoxic effects in the processes of immortalization and senescence of human cells. Here, the effects of hypoxia induced by either 1.5% O2, or by ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2006-05-01 00:00:00
abstract:BACKGROUND:Lung cancer tissues are often infiltrated by B lymphocytes, but it is not clear whether these infiltrations represent tumor-specific immune response or a nonspecific reaction. MATERIALS AND METHODS:The serological analysis of recombinant cDNA expression libraries (SEREX) were previously modified using a sev...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2006-09-01 00:00:00
abstract:BACKGROUND/AIM:MicroRNAs (miRNAs) are closely associated with a number of cellular processes, including cell development, differentiation, proliferation, carcinogenesis, and apoptosis. The aim of the present study was to elucidate the molecular mechanisms underlying the tumor suppressor activity of miRNA-203 (miR-203) ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.12618
更新日期:2018-06-01 00:00:00
abstract:PURPOSE:To further evaluate lung cancer risk associated with rare Hras1 VNTR alleles and possible biological mechanisms. MATERIALS AND METHODS:The Hras1 VNTR was genotyped in 295 lung cancer patients and 500 healthy controls by PCR and high resolution electrophoresis. Microsatellite alterations were examined in 168 tu...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1999-11-01 00:00:00
abstract:BACKGROUND:Plasmablastic lymphoma (PBL) is a rare entity which is often causally related to infection by the Human Immunodeficiency Virus (HIV). Despite its predilection for oral cavity involvement, multiple cases of extra-oral involvement have been reported in the literature, more often among immunocompetent individua...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2014-09-01 00:00:00
abstract::The metastatic involvement of the spleen in epithelial ovarian cancer is rare and usually reflects late disseminated disease. Isolated parenchymal metastasis in the spleen is an extremely unusual event, in fact in most cases in medical literature, the spleen was involved as part of diffuse peritoneal carcinomatosis. W...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Primary ocular adnexal mucosa-associated lymphoid tissue lymphoma (POAML) is a rare disease. The purpose of this study was to evaluate the treatment outcome and patterns of failure of patients with early-stage POAML treated with radiotherapy. PATIENTS AND METHODS:From 1995 to 2008, 53 patients with early-st...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2013-12-01 00:00:00
abstract::The development of cisplatin drug resistance remains a chief concern in ovarian cancer chemotherapy. β-Elemene is a natural plant product with broad-spectrum antitumor activity towards many types of carcinomas. This study aimed to define the biological and therapeutic significance of β-elemene in chemoresistant ovaria...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND:Endostar is a novel recombinant human endostatin expressed and purified in Escherichia coli with the N-terminal modified. It has been shown that endostar inhibited the proliferation of human umbilical vein endothelial cells (HUVECs) through the membrane surface receptor KDR/flt-1(VEGFR-2, vascular endothelia...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2009-01-01 00:00:00
abstract:AIM:This study analyzed the effect of metastasectomy on overall mortality (OM) and perioperative outcomes in patients with metastatic renal cell carcinoma (mRCC) treated exclusively with targeted therapy. MATERIALS AND METHODS:Using the Surveillance, Epidemiology, and End Results (SEER) database (2006-2015), Kaplan-Me...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.13604
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND:Pemetrexed and erlotinib represent different agents commonly used for the second-line treatment of patients with advanced-stage non-small cell lung cancer (NSCLC). PATIENTS AND METHODS:We analyzed data of 137 patients with advanced-stage non-squamous NSCLC treated with pemetrexed or erlotinib in the second ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2016-01-01 00:00:00
abstract:BACKGROUND:There is little effective therapy for patients with hormone-refractory breast cancer. Hormone resistance is frequently due to the transcriptional inactivation of the estrogen receptor (ER) gene. We determined the effect of DHAC, a cytosine DNA methyltransferase (CMT) inhibitor, on the estrogen sensitivity in...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1999-03-01 00:00:00
abstract::The influence of psychoactive and nonpsychoactive cannabinoids on macromolecular biosynthesis and cell proliferation was compared in normal and transformed human cells which differ with respect to their abilities to metabolize polycyclic hydrocarbon-containing carcinogens. delta 9-THC, delta 8-THC, 11-OH-delta 9-THC, ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1983-05-01 00:00:00
abstract:BACKGROUND/AIM:We aimed to investigate the efficacy of immune-cell therapy in terms of the survival of patients with neuroendocrine carcinoma of the uterine cervix (NECC), which lacks standardized therapeutic approaches. PATIENTS AND METHODS:We identified 17 patients who were diagnosed as having NECC and treated with ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.14475
更新日期:2020-08-01 00:00:00
abstract:BACKGROUND:Several types of human papilloma virus (HPV) have been associated with increased risk for epithelial malignancies. In light of a recently available vaccine that protects against persistent infection by certain HPV types (6, 11, 16, 18) and resulting neoplasias, the prevalence of HPV types was investigated in...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2008-07-01 00:00:00
abstract:BACKGROUND/AIM:Identifying useful biomarkers is central to selecting optimal therapeutic strategies for esophageal squamous cell carcinoma (ESCC). Serum p53 antibody (S-p53Ab), squamous cell carcinoma antigen (SCC-Ag), and carcinoembryonic antigen (CEA) were investigated to evaluate the significance of single and combi...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.12419
更新日期:2018-03-01 00:00:00
abstract:BACKGROUND/AIM:Radiotherapy (RT) with adjuvant hormone therapy (HT) improves prognosis in prostate cancer (PC) patients. Gonadotrophin-releasing hormone agonist (GnRHa) with luteinizing hormone-releasing hormone (LH-RH) analogues is the standard HT. High-dose antiandrogen therapy also improves survival in patients with...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.13850
更新日期:2019-11-01 00:00:00
abstract:BACKGROUND:Intronic microRNAs (miRNAs) are considered to be transcribed using their host gene promoter. However, about one third of intronic miRNAs are predicted to have independent promoter elements. MATERIALS AND METHODS:Human breast cancer cells were cultured under normoxia or hypoxia, and expression levels of intr...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.11769
更新日期:2017-07-01 00:00:00
abstract:BACKGROUND:The present study investigated the mechanism underlying the apoptosis of MKN28 human gastric cancer cells induced by the phosphatidylinositol (PI) derivative 1,2-O-bis-[8-{2-(2-pentyl-cyclopropylmethyl)-cyclopropyl}-octanoyl]-sn-glycero-3-phosphatidyl-D-1-inositol (diDCP-LA-D-PI) and its enantiomer diDCP-LA-...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2015-12-01 00:00:00
abstract:BACKGROUND/AIM:Since antigenic peptides of the cancer-associated antigens presented on human leukocyte antigen (HLA) molecules are recognized by specific cytotoxic T-lymphocytes, they have the potential to becoming effective peptide vaccines for cancer immunotherapy. MATERIALS AND METHODS:Peptides binding to HLA-A*020...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2013-05-01 00:00:00
abstract:UNLABELLED:The role of the insulin like growth factor (IGF) system in various human malignancies has been well established. The aim of this study was to determine the levels of mRNA expression of insulin-like growth factor-binding protein (IGFBP)-1, -3 and -7 genes in benign and malignant breast tissue and explore thei...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2007-09-01 00:00:00
abstract::Mast cells are frequently found in close proximity to blood vessels and have been implicated in tumour angiogenesis. The aim of the present ultrastructural study was to characterize, in detail, the mutual association between mast cells and microvasculature in 9 cases of advanced gastric carcinoma. Perivascular mast ce...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2004-07-01 00:00:00
abstract:BACKGROUND:DNA repair is a crucial phenomenon that maintains the chromosome integrity of genome which are continuously damaged by endogenous and exogenous alkylating agents. If the damaged DNA is not repaired, it may lead to mutation, chromosomal aberration, aging and cancer. N-methylpurine-DNA glycosylase (MPG), a ubi...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract::The feasibility of using low-dose carboplatin (CBDCA) as a radiopotentiator in radiotherapy(RT) for non-small cell lung cancer(NSCLC) patients with unfavorable factors was studied. Fifteen patients with locally advanced and inoperable NSCLC were treated with RT in combination with daily 20 mg/m2 CBDCA. Twelve patients...
journal_title:Anticancer research
pub_type: 临床试验,杂志文章
doi:
更新日期:1998-11-01 00:00:00
abstract:BACKGROUND/AIM:In a previous study, we showed that amentoflavone promotes sorafenib-induced apoptosis in hepatocellular carcinoma (HCC) cells in vitro. However, whether amentoflavone augments anticancer efficacy of sorafenib in HCC in vivo is unknown. The aim of the present study was to verify the anticancer effect of ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.12452
更新日期:2018-04-01 00:00:00
abstract::Colchicine is an alkaloid widely used for the treatment of inflammatory diseases, such as gout. It suppresses cell division by inhibiting mitosis. We investigated the anticancer effects of colchicine on human hypopharyngeal cancer cells and the mechanisms underlying its anticancer effects. XTT cell proliferation assay...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.12078
更新日期:2017-11-01 00:00:00
abstract:BACKGROUND:Polymorphisms altering DNA repair capacity may lead to synergistic effects with tobacco carcinogen-induced lung cancer risk. Based on this hypothesis, the relationship between APE1 polymorphism, smoking and the risk of lung cancer was explored. MATERIALS AND METHODS:The distribution of the APE1 Asp148Glu po...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2009-06-01 00:00:00
abstract::22 patients with advanced non-small-cell lung cancer were randomized to receive chemotherapy (ifosfamide) or chemotherapy followed by thymosin alpha1 + low-dose IFNalpha. Chemo-immunotherapy induced an enhanced response rate compared with chemotherapy alone (33% and 10% respectively). Although these differences were n...
journal_title:Anticancer research
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1996-03-01 00:00:00
abstract:BACKGROUND:Human neuroblastoma and medulloblastoma express abnormal ganglioside patterns especially GD2 and GM2 which are important for tumour growth. We tested the effects of L-cycloserine (L-CS), a potent inhibitor of synthesis of glycosphingolipids, on the growth, viability and expression of GD2 and GM2 in neuroblas...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1999-11-01 00:00:00
abstract:BACKGROUND/AIM:The aim of this study was to investigate the effects of the macrophage colony-stimulating factor (M-CSF) receptor antagonist on hepatic carcinogenesis in mice. MATERIALS AND METHODS:Mice were injected with diethylnitrosamine (DEN) and treated with M-CSF receptor antagonist GW2580 (GW) or a saline vehicl...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.13663
更新日期:2019-09-01 00:00:00