Abstract：
AIM:To elucidate the behavior of 1 phosphatidylinositol 4,5 bisphosphate (PIP2) 5 phosphatase (PIP2 5-Pase, EC 3.1.3.36) and 1 phosphatidylinositol 4 phosphate (PIP) 4-phosphatase (PIP 4-Pase) in cancer cells, the steady state activities of PIP2 5-Pase and PIP 4-Pase were determined in the particulate fractions of rat liver and in a spectrum of rat hepatomas of different growth rates and malignancy. METHODS:A standard method was developed using exogenous PIP2 or PIP as substrates. RESULTS AND DISCUSSION:One half of the maximum activities was reached at about 0.3 mM of the substrates and at 0.1 to 0.2 mM magnesium chloride. The optimum concentrations of Triton X-100 and cetyltrimethyl ammonium bromide were 0.25% (w/v) and 1 mM, respectively. PIP2 5-Pase and PIP 4-Pase activities were linear with time for 20 min and proportional with protein concentrations up to 22 micrograms per 50 microliters reaction mixture. In rat liver the steady state activities of PIP2 5-Pase and PIP 4-Pase were 1849 to 1881 and 1394 to 1670 nmol/h/mg protein. In three rat hepatomas the enzyme activities decreased to 50-51% and 33-42%, respectively. These results and our earlier data showing increased 1 phosphatidylinositol 4 kinase (EC 2.7.1.67), PIP 5-kinase (EC 2.7.1.68) and phospholipase C, PIP2 phosphodiesterase (EC 3.1.4.11) activities provide evidence of a transformation linked amplified increased capacity in signal transduction activity in cancer cells. The discovery and documentation of this integrated imbalance in regulation in phosphoinositide metabolism in cancer cells are in line with our observations in cancer cells for enzymes of purine and pyrimidine metabolism. The amplified increase in signal transduction capacity in cancer cells provides novel targets for the development of anticancer drugs.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Yang H,Shen F,Weber Gsubject
Has Abstractpub_date
1999-11-01 00:00:00pages
4983-8issue
6Beissn
0250-7005issn
1791-7530journal_volume
19pub_type
杂志文章abstract：:The antitumoral and immunostimulating properties of rViscumin (recombinant mistletoe lectin) were investigated in two mouse tumor models. After intravenous inoculation with RAW-117-P or L-1 sarcoma cells in Balb/c mice, rViscumin was given s.c. at non-toxic doses ranging from 0.3 to 150 ng rViscumin/kg. One set of exp...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2001-11-01 00:00:00
abstract：:High-performance liquid chromatography revealed that sodium 5,6-benzylidene-L-ascorbate (SBA), dissolved in distilled water, was gradually decomposed into ascorbic acid and benzaldehyde. Among these three compounds, ascorbic acid showed the most potent cytotoxic activity. The cytotoxic activity of each compound was si...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1994-05-01 00:00:00
abstract：BACKGROUND:Treatment for advanced pancreatic cancer is still very unsatisfactory. Treosulfan is an alkylating agent used for conventional, as well as high-dose chemotherapy regimens, whereby plasma concentrations over 500 μg/ml can be achieved. We investigated the effects of treosulfan on pancreatic cancer cell lines. ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2014-04-01 00:00:00
abstract：:Cytotoxic and mitogenic soluble factors are released into media conditioned by pure or mixed populations of mouse 3T3 fibroblasts and B16 melanoma cells cultivated in vitro. These activities are demonstrated by the use of MTT cell survival test and 3HTDR incorporation. Mitogenic (M.W. greater than 10,000) and cytotoxi...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1991-03-01 00:00:00
abstract：:The design of treatment for patients with squamous cell carcinoma of the head and neck (SCCHN) is based on prognostic factors, today essentially performance status and TNM status. It becomes increasingly important to optimise treatment and find the appropriate level of treatment and resource consumption for each patie...
journal_title：Anticancer research
pub_type： 杂志文章,评审
doi：
更新日期：1996-07-01 00:00:00
abstract：AIM:Hepatic resection has become the standard treatment for patients with primary or metastatic liver malignancies. The aim of our study was to evaluate the clinical outcome of hepatic resection in patients with advanced ovarian cancer (AOC). PATIENTS AND METHODS:All patients undergoing hepatic resection for AOC in ou...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2012-10-01 00:00:00
abstract：BACKGROUND:Cyclooxygenase-2 (Cox-2) is expressed by several types of epithelial malignancies, i.e., carcinomas, and inhibition of Cox-2 may have a therapeutic role in chemoprevention and treatment of cancer. The role of Cox-2 in non-epithelial malignancies, however, is unclear. MATERIALS AND METHODS:We investigated, b...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2005-07-01 00:00:00
abstract：BACKGROUND/AIM:Variations in cell phenotype in a single-cell-derived clone may result from asymmetric cell divisions that lead to different cell fate in a homogenous microenvironment. The aim of this study was to demonstrate the extent of cell variety in single-cell-derived clones and propose a different strategy in tr...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.11572
更新日期：2017-05-01 00:00:00
abstract：:Human papillomavirus (HPV)-positive tonsillar- and base of tongue cancer is increasing epidemically and has much better outcome than corresponding HPV-negative cancer and most other head and neck cancers with around 80% 3-year disease free survival with conventional radiotherapy and surgery. Consequently, most HPV-pos...
journal_title：Anticancer research
pub_type： 杂志文章,评审
doi：10.21873/anticanres.11958
更新日期：2017-10-01 00:00:00
abstract：BACKGROUND:Although oncological results for resection of colon cancer with inferior mesenteric artery (IMA) ligation at its origin (high tie) or immediately below the left colic artery (low tie) are similar, injury of the superior hypogastric plexus may be caused when the IMA is tied at its origin, thus impairing defec...
journal_title：Anticancer research
pub_type： 杂志文章,随机对照试验
doi：10.21873/anticanres.14276
更新日期：2020-05-01 00:00:00
abstract：BACKGROUND:PAR-1 has been involved in inflammation of the gastrointestinal tract, tumour cell growth and invasion of gastric carcinoma cells. Thus, we aimed at determining, for the first time, the association between PAR-1 - 506 ins/del and -IVSn-14 A/T and risk of Helicobacter pylori-related gastric cancer (GC) in an ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2012-09-01 00:00:00
abstract：:A circadian rhythm of serum concentrations of two tumor markers (CEA and AFP) was demonstrated in individuals not suffering from cancer. These rhythms exhibited a diurnal peak with a nocturnal dip. They disappeared in cancer groups. However, in some cancer subjects, a circadian activity was still detectable, but with ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1986-09-01 00:00:00
abstract：BACKGROUND/AIM:Chemotherapy-associated toxicity is one of the limiting factors regarding treatment efficacy, patient outcome and quality of life in this collective. Underweight or obese patients represent a major group in which the therapy seems to be more challenging. The aim of this analysis was to evaluate the impac...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.12927
更新日期：2018-10-01 00:00:00
abstract：BACKGROUND/AIM:We evaluated the clinical impact of FOLFOXIRI regimen aiming for conversion surgery in patients with unresectable multiple colorectal liver metastasis (CRLM). PATIENTS AND METHODS:A total of 42 patients with unresectable multiple CRLM who received chemotherapy with molecular agents were included in the ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.13703
更新日期：2019-09-01 00:00:00
abstract：:Our previous work showed that low-power wide-band millimeter waves (MMW) inhibit the growth of the MCF-7 human breast carcinoma cell line, also causing a marked reduction of the density of microvilli at the apical membrane of the MCF-7 cells, as revealed by scanning electron microscopy. The aim of the present work was...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2005-03-01 00:00:00
abstract：AIM:To determine the maximally tolerated dose (MTD), recommended phase II dose (RPTD) and toxicity profile of gemcitabine plus irinotecan combination. PATIENTS AND METHODS:Thirty-nine evaluable patients with advanced solid tumors were treated with gemcitabine (Gem) and irinotecan (Iri) on days 1, 8 and 15 of a 28-day ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2009-12-01 00:00:00
abstract：BACKGROUND:Since specific epidermal growth factor receptor (EGFR) somatic mutations have been demonstrated to influence the response to anti-EGFR therapy in non-small cell lung cancer, EGFR gene mutational analysis of different types of neoplasm is under investigation. PATIENTS AND METHODS:EGFR protein expression and ...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2006-09-01 00:00:00
abstract：:Small cell lung cancer (SCLC) is highly sensitive both to radiotherapy and chemotherapy. Given its high chemo sensitivity, even two decades ago, SCLC was one of the first malignancies deemed suitable for maximising the dose and dose intensity with the support of autologous bone marrow (ABMT). On the whole, results wer...
journal_title：Anticancer research
pub_type： 杂志文章,评审
doi：
更新日期：2002-11-01 00:00:00
abstract：:Serotoninergic system activity and cytokine production have been both implicated in the pathogenesis of cancer anorexia. To verify the existence of relationships between tryptophan, cytokines and anorexia, twenty cancer and six non-neoplastic patients were studied. Plasma amino acid concentration, including tryptophan...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1994-05-01 00:00:00
abstract：:Using gas chromatography, the fatty acid profile has been measured in subcutaneous fat obtained from women undergoing biopsy for benign and malignant breast conditions. There was a similar proportion of saturated and unsaturated fatty acids in both types or fat, suggesting that long-term differences in fatty acid cons...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1987-11-01 00:00:00
abstract：:Fine needle aspiration (FNA) cytology, being the mainstay to diagnose thyroid nodules, does not provide definitive results in a subset of patients. The use of molecular markers testing has been described as a useful aid in differentiation of thyroid nodules that present with an indeterminate cytodiagnosis. Molecular t...
journal_title：Anticancer research
pub_type： 杂志文章,评审
doi：
更新日期：2015-03-01 00:00:00
abstract：:We have recently found that sodium fluoride (NaF) induced apoptotic cell death in tumor cell lines. We investigated here whether 6 popular antitumor compounds modify the cytotoxic activity of NaF against human squamous cell carcinoma (HSC-2) and human promyelocytic leukemia (HL-60) cell lines. Cytotoxic concentrations...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2003-11-01 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：:Keratinocytes originating from adult human hair follicles, the most convenient biopsy tissue, can be serially cultured using a combination of two techniques. Primary cultures are established using plucked scalp hair follicles and the bovine eye lens capsule as a growth substrate. Subsequently, cells from these culture...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：1983-05-01 00:00:00
abstract：:GAGE-1/-2 proteins are novel tumour markers, functionally related to tumour rejection. The objective of the present study was to identify the existence of a relationship between GAGE-1/-2 expression, Epstein Barr Virus (EBV) infection and viral infection-induced cytokine expression in cultivated tumour cells and archi...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2000-05-01 00:00:00
abstract：:We have previously reported that polaprezinc in sodium alginate suspension (P-AG) inhibited the incidence of oral mucositis induced by radiochemotherapy in patients with head and neck cancer. The present study was designed to investigate whether P-AG prevents oral mucositis in all patients (36 patients) with hematolog...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2014-12-01 00:00:00
abstract：:Aromatase inhibitors (AIs) are important therapeutic drugs for postmenopausal women with hormone receptor-positive breast cancer. However, adverse effects of AIs such as arthralgia have been extensively reported. We performed a joint prospective, multi-institutional investigation to find out whether a low-dose and sho...
journal_title：Anticancer research
pub_type： 临床试验,杂志文章,多中心研究
doi：
更新日期：2012-06-01 00:00:00
abstract：AIM:To assess outcomes in patients treated with first-line bevacizumab-containing therapy for human epidermal growth factor receptor (HER)2-negative metastatic breast cancer (mBC) at a single centre with a homogenous standard-of-care. PATIENTS AND METHODS:Information on patient and disease characteristics, efficacy, a...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.11462
更新日期：2017-03-01 00:00:00
abstract：BACKGROUND/AIM:Many studies have shown an antiproliferative, anti-inflammatory, anti-angiogenetic, and apoptosis-inducing effect of Vitamin D. A vitamin D deficiency has been associated with an increased risk for different types of cancer. This study examined vitamin D 25(OH)D levels in gynaecological cancers in compar...
journal_title：Anticancer research
pub_type： 杂志文章
doi：10.21873/anticanres.13983
更新日期：2020-01-01 00:00:00
abstract：:Many arylamines (including carcinogens) and hydrazine drugs are acetylated by the cytosolic N-acetyltransferase (NAT). NAT plays an important role in the first step of arylamine metabolism and has been found in immortalized human cell lines, human and laboratory animal tissues. Human colon tumor cell line (colo 205) h...
journal_title：Anticancer research
pub_type： 杂志文章
doi：
更新日期：2004-05-01 00:00:00
