The monocot family Lemnaceae (duckweed) is composed of small, edible, aquatic plants. Spirodela oligorrhiza SP is a duckweed with a biomass doubling time of about 2 days under controlled, axenic conditions. Stably transformed Spirodela plants were obtained following co-cultivation of regenerative calli with Agrobacterium tumefaciens.
View Article and Find Full Text PDFPurpose: Based on preclinical data showing synergy between 7-hydroxystaurosporine (UCN-01) and platinum agents, a phase I trial of carboplatin with UCN-01 administered as a 3 h infusion in patients with advanced solid tumors was done. The primary goals of this trial were to evaluate the tolerability of this combination and the pharmacokinetics of UCN-01 when administered over 3 h and to compare the tolerability and pharmacokinetics with previously described schedules.
Patients And Methods: Patients with advanced solid tumors, good performance status, normal organ function, and no potentially curative therapy were eligible for the trial.
Cytotoxic agents have unequivocal activity in non-small cell lung cancer. Currently available agents have demonstrated the ability to prolong life and improve quality of life in advanced disease, and to increase the rate of cure when used in stage I and II disease in the adjuvant setting and as part of chemoradiotherapy in stage III disease. These agents have served as the core regimen to which agents effecting newly discovered molecular targets are added.
View Article and Find Full Text PDFBackground: Infection with the human immunodeficiency virus (HIV) and lung cancer represent two problems beginning in the 20th century that are of epidemic proportions. By the end of the 20th century, therapeutic programs of modest efficacy had been developed for both. Because both HIV infection and lung cancer are common, it is not surprising that a number of patients would be afflicted with both diseases simultaneously.
View Article and Find Full Text PDFEponyms are titles of medical disorders named for individuals who originally described the condition. They also help us remember and identify the disorder. Medicine is replete with them, and changing them or eradicating them, for whatever reason, is not simple.
View Article and Find Full Text PDFThis descriptive qualitative study was conducted to explicate pastoral care providers' perceptions of nurses as spiritual providers. Spirituality is especially meaningful in contemporary society as a whole with spiritual care an expectation of hospitalized patients. Spiritual care given by nurses is grounded in nursing's history, inherent in its philosophical framework, and supported by research and professional mandates.
View Article and Find Full Text PDFPurpose: The present study was designed to investigate the ability of N-[4-(5-bromo-2-pyrimidyloxy)-3-methylphenyl]-(dimemethylamino)-benzoylphenylurea (dimemethylamino benzoylphenylurea; BPU) to sensitize cells to radiation and to examine the relationship between phenotype versus survival, DNA damage, apoptosis, or cell cycle progression in non-small cell lung cancer (NSCLC) cell lines.
Methods: Asynchronous cultures of three NSCLC (phenotype) lines, A549 (adenocarcinoma), NCI-H226 (squamous) and NCI-H596 (adenosquamous) were used. Cells were treated for 24 h with BPU at various concentrations (0-10 microM) to obtain drug doses for inhibiting cell survival by approximately 50% (IC50).
Concomitant adenocarcinoma and non-Hodgkin's lymphoma, both located in the intestinal tract, are unusual. We report a unique case of moderately differentiated of the cecum and a simultaneous follicular lymphoma, Grade 1, of the terminal ileum and regional lymph nodes in a 55-yr-old man. One lymph node was involved by both adenocarcinoma and follicular lymphoma.
View Article and Find Full Text PDFClin Gastroenterol Hepatol
June 2006
Background & Aims: Multiple studies have shown that promoter methylation of tumor suppressor genes underlies esophageal carcinogenesis. Hypothetically, methylation resulting in tumor suppressor gene inactivation might result in tumors that are unresponsive to chemotherapy and radiation. Accordingly, our aim was to find methylation markers that could be used to predict response to chemoradiation.
View Article and Find Full Text PDFWe consider a nonlinear oscillator of the Duffing type with fractional derivative of the order 1
The antisense oligonucleotide aprinocarsen specifically inhibits the transcription of protein kinase C-alpha. This study evaluated the response rate of the combination therapy of aprinocarsen, gemcitabine, and carboplatin in previously untreated patients with advanced non-small cell lung cancer (NSCLC). Secondary objectives included the measurement of time-to-event efficacy parameters and toxicity.
View Article and Find Full Text PDFAlthough there is broad agreement on management options for treating different stages of non-small cell lung cancer (ie, surgery for stage I and II disease, combined treatment modalities for stage III disease, and platinum-based chemotherapy as initial treatment for appropriate patients with stage IV disease), there is considerable geographic variation in practice patterns. These variations reflect a number of factors, including health care economics, the influence of national and regional regulatory bodies, the nature of physician and patient interaction, and probable biological differences between different populations in terms of drug metabolism and inherent susceptibility to both drug activity and toxicity. The approaches taken by three different geographic regions, the United States, European Union, and Japan, are evaluated.
View Article and Find Full Text PDFWithin the past 2 years, epidermal growth factor receptor (EGFR) inhibitors have moved from experimental agents to approved drugs for the management of advanced non-small cell lung cancer (NSCLC). This evolution has been accompanied by dramatic improvements in the understanding of how these drugs work and the clinical populations that may benefit. The identification of mutations in the ATP-binding domain of the EGFR that predict for dramatic responses introduces the possibility of truly individualized therapy in a subset of advanced NSCLC patients.
View Article and Find Full Text PDFMalignancies are increased in some types of solid organ transplant patients receiving immunosuppressive therapy and are a significant contributor to patient morbidity and mortality. There may be a 100-fold increase in the incidence of de novo neoplasia in this population. The risk of lymphoproliferative malignancies is well appreciated.
View Article and Find Full Text PDFThe combination of chemotherapy and radiation has been validated for the treatment of locally advanced non-small-cell lung cancer (NSCLC). However, the results are still unsatisfactory, and there is a need to improve current treatment. One approach is to use new agents that have the potential to enhance the efficacy of chemotherapy, radiation therapy (RT), or both.
View Article and Find Full Text PDFPhys Rev E Stat Nonlin Soft Matter Phys
September 2005
Hamiltonian chaotic dynamics is, in general, not ergodic and the boundaries of the ergodic or quasiergodic area (stochastic sea, stochastic layers, stochastic webs, etc.) are sticky, i.e.
View Article and Find Full Text PDFPhys Rev E Stat Nonlin Soft Matter Phys
August 2005
The paper describes the complex topological structure of invariant surfaces that appears in a quasi-stationary regime of the tokamak plasma, and it considers in detail anomalous transport of particles along the invariant surfaces (isosurfaces) that have topological genus greater than 1. Such dynamics is pseudochaotic; i.e.
View Article and Find Full Text PDFPhys Rev E Stat Nonlin Soft Matter Phys
August 2005
Sound-wave propagation in a strongly idealized model of the deep-water acoustic waveguide with a periodic range dependence is considered. It is investigated how the phenomenon of ray and wave chaos affects the sound scattering at a strong mesoscale inhomogeneity of the refractive index caused by the synoptic eddy. Methods derived in the theory of dynamical and quantum chaos are applied.
View Article and Find Full Text PDFClin Adv Hematol Oncol
June 2004
Platinum-based chemotherapy is now established in the treatment of all stages of lung cancer. Despite the benefits of therapy, the majority of patients treated for lung cancer will ultimately progress. Some will retain good performance status and be candidates for additional, tumor-directed treatment.
View Article and Find Full Text PDFAccording to the Centers for Disease Control and Prevention (CDC), asthma is a growing health problem in the United States; there are now 9 million children under the age of 18 diagnosed with this illness. As a chronic illness, asthma has a major impact on the life of the individual as well as the family. This article illustrates the process of incorporation of standardized guidelines for the management of pediatric asthma through the collaborative efforts of the nurse, family, and child.
View Article and Find Full Text PDFThe purpose of this article is to help primary care physicians who are often challenged with the management of vertebral compression fracture (VCF) by presenting clinical background and identifying candidates for percutaneous vertebroplasty, a minimally invasive procedure for treatment of VCF.
View Article and Find Full Text PDFPurpose: Platinum-based chemotherapy is the standard treatment for advanced non-small-cell lung cancer (NSCLC). Unfortunately, a plateau in efficacy with currently available agents has been reached. Previous studies of the retinoid, bexarotene, a retinoid X receptor-specific ligand, have indicated that it may improve outcome in advanced NSCLC.
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